Some standard content:
JB/T9187-1999
This standard is a revision of ZBJ33003-90 "Welding Roller Stand". Only editorial changes were made to the original standard during the revision, and its main technical content remained unchanged.
This standard replaces ZBJ33003-90 from the date of implementation. This standard is proposed and managed by the National Welding Standardization Technical Committee. The responsible drafting unit of this standard: Harbin Welding Research Institute. The main drafters of this standard: Lu Niansong and Zhao Changsheng. This standard was issued in 1990, and this revision is the first revision. 4
1 Scope
Machinery Industry Standard of the People's Republic of China
Welding Rollers
Welding Turning Rolls
JB/T9187--1999
Replaces ZBJ33003-90
This standard specifies the classification, technical requirements, test methods and inspection rules of welding turning rolls. This standard is applicable to general turning rolls. For turning rolls or special machines with special requirements, this standard can be referred to and handled by negotiation between the manufacturer and the user.
2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards GB/T1184—1996 Form and position tolerances without tolerance values GB/T1356—1988 Basic tooth edge of involute cylindrical gears GB/T1800.3—1998 Fundamentals of limits and fits Part 3: Numerical tables of standard tolerances and basic deviations GB4064—1983 Guidelines for safety design of electrical equipment GB/T10089—1988 Precision of cylindrical worms and worm wheels GB/T 10095---1988
3 Product categories
Precision of involute cylindrical gears
The roller frame consists of a roller and a base.
3.1 Roller Type Classification
Basic roller, exchange roller, differential roller, adjustable center height roller and deflectable axis roller are five types shown in Table 1.3.2 Roller Frame Classification
Long axis roller frame and combined roller frame are two major categories. 3.2.1 Long axis roller frame
Multiple rollers are coaxially arranged in two rows along the two sides of the simplified workpiece, one side is the driving wheel, the other side is the driven wheel, and the number of driving wheels and driven wheels is the same. It is used for the assembly and welding of slender simplified workpieces. 3.2.2 Combined roller frame
The combined roller frame is composed of two rollers supported on the same base. It can be arbitrarily combined by two or more frames according to the weight and length of the workpiece. According to the type of combined rollers, it can be divided into five types: basic roller frame, exchange roller frame, self-adjusting roller frame, adjustable center height roller frame and deflectable axis roller frame.
3.2.2.1 Basic type roller frame
It is composed of two basic rollers.
Guohao Machinery Industry Bureau approved on 1999-06-24, 2000-01-01 for sale
Basic roller
Exchange roller
Differential roller
Adjustable center height roller
Deflectable axis roller
JB/T 9187--1999
Table 1 Classification of roller types
Schematic diagram of the mechanism
By exchanging the roller positions, different center distances can be obtained
With the change of the workpiece diameter,
the swing frame swings an angle to keep all rollers
contacting the workpiece
The roller center height is adjustable
The roller axis can be deflected by an angle in the horizontal plane as needed
3.2.2.2 Interchangeable roller frame
JB/T 9187--1999
It is composed of an exchange roller and a basic roller. By changing the position of the exchange wheel, different center distances can be obtained to adapt to workpieces of different diameters. 3.2.2.3 Self-adjusting roller frame
Roller frame composed of differential rollers. The self-adjusting roller frame can automatically adjust the roller center distance with the swing frame according to the different diameters of the workpiece to obtain balanced support for the workpiece. The self-adjusting roller frame drives the active roller through a differential gear system. 3.2.2.4 Adjustable center height roller frame
consists of an adjustable center height roller and a basic roller. By adjusting the center height of a roller, a cylindrical workpiece generates an axial component force in the opposite direction of the workpiece movement during rotation to eliminate the axial movement of the workpiece. 3.2.2.5 Deflectable axis roller frame
consists of a deflectable axis roller and a basic roller. By adjusting the angle between the axis of the deflectable axis roller and the generatrix of the cylindrical workpiece, an axial component force in the opposite direction of the workpiece movement is obtained to eliminate the axial movement of the workpiece. The transmission mode and mechanism diagram of the roller frame are shown in Table 2. Table 2 Roller frame transmission mode and mechanism diagram Type
Long axis roller frame
Combined roller frame
Long axis
Basic roller frame
Moving function
Fixed
Fixed
One side active
One side driven
Single active
Dual active
Mechanism diagram
Guo Guo Guo Zhong Lu
Combined roller frame
Basic roller frame
Exchange roller frame
Moving function
Movable
Fixed
Movable
JB/T 9187-1999
Table 2 (continued)
Single-acting
Dual-acting
Combined roller frame
Self-adjusting roller frame
Adjustable center height
Roller frame
Moving function
Fixed
Moving
Fixed
Moving
JB/T 9187-1999
Table 2 (continued)
Combined roller frame
Type
Deflectable axis
Moving function
Fixed
JB/T 9187—1999
Table 2 (end)
1 The wheel frame composed of adjustable center height rollers must be equipped with a single active or double active basic roller frame. Mechanism diagram
2 The fixed or mobile roller frame composed of two adjustable center height rollers can also be used to prevent axial movement, adjust the center of the workpiece, and adjust the weld gap.
3 The fixed roller frame composed of a deflectable axis roller must be equipped with a single active or double active basic roller frame to prevent axial movement of the workpiece. Model compilation method
The welding roller frame model is compiled by code such as name, rated load, structure type, transmission form, function of moving along the axis of the workpiece, and speed stability level classification.
4.1 The roller frame model is indicated as follows
Speed stability classification (see Table 6)
Function of moving along the workpiece axis (see Table 5)
Transmission form (see Table 4)
Structural classification (see Table 3)
Rated load of welding roller frame
Code of welding roller frame
4.1.1GHJ indicates the name of welding roller frame. 4.1.2X indicates the rated load code of welding roller frame, which is directly expressed in tons (Arabic numerals). The rated load of combined roller frame refers to the weight carried by two roller frames together. The rated load of long-axis roller frame refers to the weight carried by all rollers together. The rated load of welding roller frame has the following grades: 0.6t; 2t; 6t; 10t; 25t; 60t; 100t; 160t; 250t.4.1.3X, represents the structural classification code, according to Table 3. Table 3 Structural classification code
Structural classification code Xz
Structural classification name
Long-axis roller frame
Basic roller frame
Exchange roller frame
Self-adjusting roller frame
Adjustable center height roller frame
Deflectable axis roller frame
4.1.4X represents the transmission form code, according to Table 4. Transmission type code X:
Transmission type
JB/T 9187-1999
Table 4 Transmission type code
Single drive
4.1.5, X represents the function code of the roller frame moving along the axis of the workpiece, according to Table 5.2
Dual driveWww.bzxZ.net
Table 5 Axial movement function code
Function code X
Fixed
X, represents the speed stability classification code, according to Table 6. Table 6 Speed stability performance code
Speed stability code Xs
5 Normal use conditions
The welding roller frame should be able to work normally under the following use conditions. 5.1 The altitude should not exceed 1000m.
5.2 The ambient air temperature should not exceed the following limits: a) Maximum temperature 40℃;
b) Minimum temperature 0℃.
5.3 Relative humidity of air
Mobile
Permissible fluctuation percentage of speed
≤±5%
≤±10%
When the daily average temperature is not more than 25℃, the average maximum relative humidity in the wettest month is 90%. 5.4 The place where the welding roller frame is used should be free of explosive or corrosive industrial gases, water vapor, salt spray and chemical deposits that may seriously harm or affect the normal use of the roller frame.
5.5 Quality of power supply network
Voltage fluctuation (when the frequency is rated value) ≤±10%, frequency fluctuation (when the voltage is rated value) ≤土2%. 5.6 The flatness of the plane on the two ground rails of the welding roller frame shall meet the relevant requirements of GB/T 1184. The parallelism of the two ground rails shall meet the relevant requirements of GB/T 1184.
5.7 If there are special requirements for the use environment, the user can negotiate with the manufacturer to make special protection design. 6 Technical requirements
6.1 The active roller shall be driven by a DC motor or an AC wide speed motor through a gearbox. 6.2 The circumferential speed of the active roller shall meet the requirements of the welding process and be steplessly adjustable within the range of 6 to 60 m/h. If there are special requirements, the manufacturer and the user shall negotiate and determine.
6.3 The circumferential speed of the roller shall be stable and uniform, and creeping is not allowed. The allowable speed fluctuation △v is divided into two levels, A and B, according to different welding process requirements (see Table 6).
6.4 Requirements for manufacturing and assembly accuracy of welding roller racks JB/T 9187—1999
6.4.1 The transmission parts such as worm gears and gears of welding roller racks shall meet the requirements of Grade 8 accuracy in GB/T1356, GB/T10095 and GB/T10089.
6.4.2 All center heights of welding roller racks must be equal, and the allowable tolerance is the requirements of IT8 in Table 2 of GB/T1800.3--1998. 6.4.3 The circular runout of the ends and the middle of the roller shall meet the relevant requirements of GB/T1184. 6.4.4· After the rollers on both sides of the workpiece are assembled or the center distance is adjusted, the parallelism of the two axes, the parallelism of the roller axis and the bottom surface of the base, and the parallelism of the roller axis and the matching surface on the base and the side of the ground rail shall meet the relevant requirements of GB/T1184 when measured over the entire length of the roller. As shown in Figure 1.
6.4.5 The allowable tolerance of the center distance of the rollers on both sides of the workpiece after the rollers are assembled or adjusted is the IT8 precision requirement in Table 2 of GB/T1800.3-1998.
6.5 The welding roller frame must be equipped with a reliable welding cable rotary grounding device, and the welding current is not allowed to flow through the bearings of the roller frame. 6.6 The material of the roller working surface is recommended to be selected according to the rated load of the roller. 6.6.1 When the rated load of the roller frame is X≤10t, the rubber wheel surface is used. 6.6.2 When the rated load of the roller frame is X, 10t but ≤60t, the metal-rubber combined wheel surface is used, the metal wheel surface is load-bearing, and the rubber wheel surface is driven. The combination method is shown in Figure 2a) and Figure 2b).
6.6.3 When the rated load of the roller frame is X, >60t, the metal wheel surface is used. 6.6.4 The material of the roller working surface of the long-axis roller frame shall be determined by the supply and demand parties. 6.7 The roller diameter, the rated load of the roller frame and the maximum and minimum diameters of the simplified workpieces shall comply with the provisions of Table 7. 6.8 The center distance of each pair of rollers of the welding roller frame must be adjusted accordingly according to the diameter of the simplified workpiece to ensure that the wrap angle of the two rollers to the simplified workpiece is greater than 45 and less than 110°
6.9 When the simplified workpiece is welded on the anti-axial movement roller frame, the axial movement of the workpiece during the entire welding process should be <±3mm.
6.10 The minimum power of the active roller drive motor is recommended to be selected according to Table 8. The power values listed in Table 8 are the power when one motor drives a pair of active rollers. If two motors are used to drive two active hydraulic wheels respectively, the power value of the motor should be half of the value listed in Table 8. 6.11 The safety indicators of the electrical control system shall comply with the requirements of GB4064. 6.12 The welding roller frame shall be made of high-quality steel. If a welded structure base is used, stress relief heat treatment must be performed after welding. 6.13 Before leaving the factory, the non-working surface of the roller frame should be painted. 6.14 The welded roller frame should be equipped with a fixed lifting hook at an appropriate position. 7 Inspection and Acceptance
7.1 Factory Inspection
Before leaving the factory, the roller frame should be inspected for manufacturing and assembly quality according to the items and accuracy mentioned in 6.4, and a no-load test run should be carried out. 7.1.1 Check the quality of transmission parts such as gears and worm gear pairs according to the 8th grade accuracy and inspection method in GB/T10095GB/T10089. 7.1.2 Place the roller frame on the platform and use a height gauge to measure the size from the lower reference surface of the roller frame base to the center of the roller. It should meet the requirements of 6.4.2. 7.1.3 Use a dial indicator to measure the circular runout of the roller. It should meet the requirements of 6.4.3. 7.1.4 Place the roller frame on the platform and use a height gauge to measure the difference in the center height of each roller at both ends, which is the parallelism between the roller axis and the bottom surface of the base; use a flat ruler, a square box, and a height gauge to measure the horizontal dimension difference between the two ends of the roller to the base and the side of the ground rail, which is the parallelism of the two roller axes and the parallelism of the roller axis and the side of the ground rail. The value should meet the requirements of 6.4.4. 7.1.5 Use a flat ruler and an external diameter dial indicator to measure the center distance between the two rollers, which should meet the requirements of 6.4.5. 7.1.6 No-load test run
7.1.6.1 The no-load test run time should be no less than 1 hour. Check whether the rotation of each driving wheel is stuck, and whether the reduction box and gearbox have abnormal sounds. 482
JB/T 9187
Figure 1 Schematic diagram of parallelism between roller axes and base surface Rubber
Figure 2 Schematic diagram of wheel surface combination
7.1.6.2 When the motor is adjusted to the highest and lowest speeds, use a linear speed measuring instrument to check the maximum and minimum circular speeds of the roller respectively. They should meet the requirements of 6.2, and the fluctuation of the circumferential speed should meet the requirements of 6.3. 7.2 Type test
Type test can be determined by negotiation between the supply and demand parties, and should be carried out by the user if necessary. 483
Roller diameter
Rated load X
Minimum power of motor
7.2.1 Load test
JB/T 91871999
Table 7 Roller diameter and rated load
Minimum power of main roller motor
Simplified workpiece diameter
Minimum diameter
Maximum diameter
7.2.1.1 The roller frame is subjected to load test under rated load (the test load of roller frame above 50t is selected by the user below the rated load).
7.2.1.2 The temperature rise of the driving motor measured by the resistance method after reaching thermal equilibrium at room temperature of 20℃ and natural ventilation conditions shall be less than the values listed in Table 9.
Table 9 Allowable temperature rise of motor
Insulation grade of motor
Allowable temperature rise
7.2.1.3 The linear velocity of the cylindrical workpiece surface shall meet the requirements of 6.3 when the linear velocity measuring instrument is used. F
7.2.1.4 For the anti-vibration roller frame, the total axial movement of the workpiece shall meet the requirements of 6.9 during the entire load test time. 8 Marking, packaging, transportation and storage
8.1 The label of the welding roller frame shall include the model, rated load, roller linear velocity range, diameter range of the cylindrical workpiece, motor power, network rated voltage, roller frame deadweight, roller frame external dimensions, factory number, factory date, manufacturer name, etc. 8.2 The packaging box shall be sturdy, rainproof and easy to lift. It can be packaged in parts. 8.3 The packaging should also include the product certificate, instruction manual, installation drawing, packing list and other technical documents. 8.4 Dumping and strong vibration are not allowed during transportation. 8.5 Before the welding roller frame leaves the factory and after it arrives, if it is not installed immediately in the factory, the storage site should meet the requirements of 5.2 to 5.4.6 The flatness of the plane on the two ground rails of the welding roller frame shall meet the relevant requirements of GB/T 1184. The parallelism of the two ground rails shall meet the relevant requirements of GB/T 1184.
5.7 If there are special requirements for the use environment, the user can negotiate with the manufacturer to make special protection design. 6 Technical requirements
6.1 The active roller shall be driven by a DC motor or an AC wide speed motor through a gearbox. 6.2 The circumferential speed of the active roller shall meet the requirements of the welding process and be steplessly adjustable within the range of 6 to 60 m/h. If there are special requirements, the manufacturer and the user shall negotiate and determine.
6.3 The circumferential speed of the roller shall be stable and uniform, and creeping is not allowed. The allowable speed fluctuation △v is divided into two levels, A and B, according to different welding process requirements (see Table 6).
6.4 Requirements for manufacturing and assembly accuracy of welding roller racks JB/T 9187—1999
6.4.1 The transmission parts such as worm gears and gears of welding roller racks shall meet the requirements of Grade 8 accuracy in GB/T1356, GB/T10095 and GB/T10089.
6.4.2 All center heights of welding roller racks must be equal, and the allowable tolerance is the requirements of IT8 in Table 2 of GB/T1800.3--1998. 6.4.3 The circular runout of the ends and the middle of the roller shall meet the relevant requirements of GB/T1184. 6.4.4· After the rollers on both sides of the workpiece are assembled or the center distance is adjusted, the parallelism of the two axes, the parallelism of the roller axis and the bottom surface of the base, and the parallelism of the roller axis and the matching surface on the base and the side of the ground rail shall meet the relevant requirements of GB/T1184 when measured over the entire length of the roller. As shown in Figure 1.
6.4.5 The allowable tolerance of the center distance of the rollers on both sides of the workpiece after the rollers are assembled or adjusted is the IT8 precision requirement in Table 2 of GB/T1800.3-1998.
6.5 The welding roller frame must be equipped with a reliable welding cable rotary grounding device, and the welding current is not allowed to flow through the bearings of the roller frame. 6.6 The material of the roller working surface is recommended to be selected according to the rated load of the roller. 6.6.1 When the rated load of the roller frame is X≤10t, the rubber wheel surface is used. 6.6.2 When the rated load of the roller frame is X, 10t but ≤60t, the metal-rubber combined wheel surface is used, the metal wheel surface is load-bearing, and the rubber wheel surface is driven. The combination method is shown in Figure 2a) and Figure 2b).
6.6.3 When the rated load of the roller frame is X, >60t, the metal wheel surface is used. 6.6.4 The material of the roller working surface of the long-axis roller frame shall be determined by the supply and demand parties. 6.7 The roller diameter, the rated load of the roller frame and the maximum and minimum diameters of the simplified workpieces shall comply with the provisions of Table 7. 6.8 The center distance of each pair of rollers of the welding roller frame must be adjusted accordingly according to the diameter of the simplified workpiece to ensure that the wrap angle of the two rollers to the simplified workpiece is greater than 45 and less than 110°
6.9 When the simplified workpiece is welded on the anti-axial movement roller frame, the axial movement of the workpiece during the entire welding process should be <±3mm.
6.10 The minimum power of the active roller drive motor is recommended to be selected according to Table 8. The power values listed in Table 8 are the power when one motor drives a pair of active rollers. If two motors are used to drive two active hydraulic wheels respectively, the power value of the motor should be half of the value listed in Table 8. 6.11 The safety indicators of the electrical control system shall comply with the requirements of GB4064. 6.12 The welding roller frame shall be made of high-quality steel. If a welded structure base is used, stress relief heat treatment must be performed after welding. 6.13 Before leaving the factory, the non-working surface of the roller frame should be painted. 6.14 The welded roller frame should be equipped with a fixed lifting hook at an appropriate position. 7 Inspection and Acceptance
7.1 Factory Inspection
Before leaving the factory, the roller frame should be inspected for manufacturing and assembly quality according to the items and accuracy mentioned in 6.4, and a no-load test run should be carried out. 7.1.1 Check the quality of transmission parts such as gears and worm gear pairs according to the 8th grade accuracy and inspection method in GB/T10095GB/T10089. 7.1.2 Place the roller frame on the platform and use a height gauge to measure the size from the lower reference surface of the roller frame base to the center of the roller. It should meet the requirements of 6.4.2. 7.1.3 Use a dial indicator to measure the circular runout of the roller. It should meet the requirements of 6.4.3. 7.1.4 Place the roller frame on the platform and use a height gauge to measure the difference in the center height of each roller at both ends, which is the parallelism between the roller axis and the bottom surface of the base; use a flat ruler, a square box, and a height gauge to measure the horizontal dimension difference between the two ends of the roller to the base and the side of the ground rail, which is the parallelism of the two roller axes and the parallelism of the roller axis and the side of the ground rail. The value should meet the requirements of 6.4.4. 7.1.5 Use a flat ruler and an external diameter dial indicator to measure the center distance between the two rollers, which should meet the requirements of 6.4.5. 7.1.6 No-load test run
7.1.6.1 The no-load test run time should be no less than 1 hour. Check whether the rotation of each driving wheel is stuck, and whether the reduction box and gearbox have abnormal sounds. 482
JB/T 9187
Figure 1 Schematic diagram of parallelism between roller axes and base surface Rubber
Figure 2 Schematic diagram of wheel surface combination
7.1.6.2 When the motor is adjusted to the highest and lowest speeds, use a linear speed measuring instrument to check the maximum and minimum circular speeds of the roller respectively. They should meet the requirements of 6.2, and the fluctuation of the circumferential speed should meet the requirements of 6.3. 7.2 Type test
Type test can be determined by negotiation between the supply and demand parties, and should be carried out by the user if necessary. 483
Roller diameter
Rated load X
Minimum power of motor
7.2.1 Load test
JB/T 91871999
Table 7 Roller diameter and rated load
Minimum power of main roller motor
Simplified workpiece diameter
Minimum diameter
Maximum diameter
7.2.1.1 The roller frame is subjected to load test under rated load (the test load of roller frame above 50t is selected by the user below the rated load).
7.2.1.2 The temperature rise of the driving motor measured by the resistance method after reaching thermal equilibrium at room temperature of 20℃ and natural ventilation conditions shall be less than the values listed in Table 9.
Table 9 Allowable temperature rise of motor
Insulation grade of motor
Allowable temperature rise
7.2.1.3 The linear velocity of the cylindrical workpiece surface shall meet the requirements of 6.3 when the linear velocity measuring instrument is used. F
7.2.1.4 For the anti-vibration roller frame, the total axial movement of the workpiece shall meet the requirements of 6.9 during the entire load test time. 8 Marking, packaging, transportation and storage
8.1 The label of the welding roller frame shall include the model, rated load, roller linear velocity range, diameter range of the cylindrical workpiece, motor power, network rated voltage, roller frame deadweight, roller frame external dimensions, factory number, factory date, manufacturer name, etc. 8.2 The packaging box shall be sturdy, rainproof and easy to lift. It can be packaged in parts. 8.3 The packaging should also include the product certificate, instruction manual, installation drawing, packing list and other technical documents. 8.4 Dumping and strong vibration are not allowed during transportation. 8.5 Before the welding roller frame leaves the factory and after it arrives, if it is not installed immediately in the factory, the storage site should meet the requirements of 5.2 to 5.4.6 The flatness of the plane on the two ground rails of the welding roller frame shall meet the relevant requirements of GB/T 1184. The parallelism of the two ground rails shall meet the relevant requirements of GB/T 1184.
5.7 If there are special requirements for the use environment, the user can negotiate with the manufacturer to make special protection design. 6 Technical requirements
6.1 The active roller shall be driven by a DC motor or an AC wide speed motor through a gearbox. 6.2 The circumferential speed of the active roller shall meet the requirements of the welding process and be steplessly adjustable within the range of 6 to 60 m/h. If there are special requirements, the manufacturer and the user shall negotiate and determine.
6.3 The circumferential speed of the roller shall be stable and uniform, and creeping is not allowed. The allowable speed fluctuation △v is divided into two levels, A and B, according to different welding process requirements (see Table 6).
6.4 Requirements for manufacturing and assembly accuracy of welding roller racks JB/T 9187—1999
6.4.1 The transmission parts such as worm gears and gears of welding roller racks shall meet the requirements of Grade 8 accuracy in GB/T1356, GB/T10095 and GB/T10089.
6.4.2 All center heights of welding roller racks must be equal, and the allowable tolerance is the requirements of IT8 in Table 2 of GB/T1800.3--1998. 6.4.3 The circular runout of the ends and the middle of the roller shall meet the relevant requirements of GB/T1184. 6.4.4· After the rollers on both sides of the workpiece are assembled or the center distance is adjusted, the parallelism of the two axes, the parallelism of the roller axis and the bottom surface of the base, and the parallelism of the roller axis and the matching surface on the base and the side of the ground rail shall meet the relevant requirements of GB/T1184 when measured over the entire length of the roller. As shown in Figure 1.
6.4.5 The allowable tolerance of the center distance of the rollers on both sides of the workpiece after the rollers are assembled or adjusted is the IT8 precision requirement in Table 2 of GB/T1800.3-1998.
6.5 The welding roller frame must be equipped with a reliable welding cable rotary grounding device, and the welding current is not allowed to flow through the bearings of the roller frame. 6.6 The material of the roller working surface is recommended to be selected according to the rated load of the roller. 6.6.1 When the rated load of the roller frame is X≤10t, the rubber wheel surface is used. 6.6.2 When the rated load of the roller frame is X, 10t but ≤60t, the metal-rubber combined wheel surface is used, the metal wheel surface is load-bearing, and the rubber wheel surface is driven. The combination method is shown in Figure 2a) and Figure 2b).
6.6.3 When the rated load of the roller frame is X, >60t, the metal wheel surface is used. 6.6.4 The material of the roller working surface of the long-axis roller frame shall be determined by the supply and demand parties. 6.7 The roller diameter, the rated load of the roller frame and the maximum and minimum diameters of the simplified workpieces shall comply with the provisions of Table 7. 6.8 The center distance of each pair of rollers of the welding roller frame must be adjusted accordingly according to the diameter of the simplified workpiece to ensure that the wrap angle of the two rollers to the simplified workpiece is greater than 45 and less than 110°
6.9 When the simplified workpiece is welded on the anti-axial movement roller frame, the axial movement of the workpiece during the entire welding process should be <±3mm.
6.10 The minimum power of the active roller drive motor is recommended to be selected according to Table 8. The power values listed in Table 8 are the power when one motor drives a pair of active rollers. If two motors are used to drive two active hydraulic wheels respectively, the power value of the motor should be half of the value listed in Table 8. 6.11 The safety indicators of the electrical control system shall comply with the requirements of GB4064. 6.12 The welding roller frame shall be made of high-quality steel. If a welded structure base is used, stress relief heat treatment must be performed after welding. 6.13 Before leaving the factory, the non-working surface of the roller frame should be painted. 6.14 The welded roller frame should be equipped with a fixed lifting hook at an appropriate position. 7 Inspection and Acceptance
7.1 Factory Inspection
Before leaving the factory, the roller frame should be inspected for manufacturing and assembly quality according to the items and accuracy mentioned in 6.4, and a no-load test run should be carried out. 7.1.1 Check the quality of transmission parts such as gears and worm gear pairs according to the 8th grade accuracy and inspection method in GB/T10095GB/T10089. 7.1.2 Place the roller frame on the platform and use a height gauge to measure the size from the lower reference surface of the roller frame base to the center of the roller. It should meet the requirements of 6.4.2. 7.1.3 Use a dial indicator to measure the circular runout of the roller. It should meet the requirements of 6.4.3. 7.1.4 Place the roller frame on the platform and use a height gauge to measure the difference in the center height of each roller at both ends, which is the parallelism between the roller axis and the bottom surface of the base; use a flat ruler, a square box, and a height gauge to measure the horizontal dimension difference between the two ends of the roller to the base and the side of the ground rail, which is the parallelism of the two roller axes and the parallelism of the roller axis and the side of the ground rail. The value should meet the requirements of 6.4.4. 7.1.5 Use a flat ruler and an external diameter dial indicator to measure the center distance between the two rollers, which should meet the requirements of 6.4.5. 7.1.6 No-load test run
7.1.6.1 The no-load test run time should be no less than 1 hour. Check whether the rotation of each driving wheel is stuck, and whether the reduction box and gearbox have abnormal sounds. 482
JB/T 9187
Figure 1 Schematic diagram of parallelism between roller axes and base surface Rubber
Figure 2 Schematic diagram of wheel surface combination
7.1.6.2 When the motor is adjusted to the highest and lowest speeds, use a linear speed measuring instrument to check the maximum and minimum circular speeds of the roller respectively. They should meet the requirements of 6.2, and the fluctuation of the circumferential speed should meet the requirements of 6.3. 7.2 Type test
Type test can be determined by negotiation between the supply and demand parties, and should be carried out by the user if necessary. 483
Roller diameter
Rated load X
Minimum power of motor
7.2.1 Load test
JB/T 91871999
Table 7 Roller diameter and rated load
Minimum power of main roller motor
Simplified workpiece diameter
Minimum diameter
Maximum diameter
7.2.1.1 The roller frame is subjected to load test under rated load (the test load of roller frame above 50t is selected by the user below the rated load).
7.2.1.2 The temperature rise of the driving motor measured by the resistance method after reaching thermal equilibrium at room temperature of 20℃ and natural ventilation conditions shall be less than the values listed in Table 9.
Table 9 Allowable temperature rise of motor
Insulation grade of motor
Allowable temperature rise
7.2.1.3 The linear velocity of the cylindrical workpiece surface shall meet the requirements of 6.3 when the linear velocity measuring instrument is used. F
7.2.1.4 For the anti-vibration roller frame, the total axial movement of the workpiece shall meet the requirements of 6.9 during the entire load test time. 8 Marking, packaging, transportation and storage
8.1 The label of the welding roller frame shall include the model, rated load, roller linear velocity range, diameter range of the cylindrical workpiece, motor power, network rated voltage, roller frame deadweight, roller frame external dimensions, factory number, factory date, manufacturer name, etc. 8.2 The packaging box shall be sturdy, rainproof and easy to lift. It can be packaged in parts. 8.3 The packaging should also include the product certificate, instruction manual, installation drawing, packing list and other technical documents. 8.4 Dumping and strong vibration are not allowed during transportation. 8.5 Before the welding roller frame leaves the factory and after it arrives, if it is not installed immediately in the factory, the storage site should meet the requirements of 5.2 to 5.4.5 The welding roller frame must be equipped with a reliable welding cable rotary grounding device, and the welding current is not allowed to flow through the roller frame bearing. 6.6 The material of the roller working surface is recommended to be selected according to the rated load of the roller. 6.6.1 When the rated load of the roller frame is X≤10t, a rubber wheel surface is used. 6.6.2 When the rated load of the roller frame is X, 10t but ≤60t, a metal-rubber combined wheel surface is used. The metal wheel surface is load-bearing and the rubber wheel surface is driven. The combination method is shown in Figure 2a) and Figure 2b).
6.6.3 When the rated load of the roller frame is X, >60t, a metal wheel surface is used. 6.6.4 The material of the roller working surface of the long-axis roller frame shall be agreed upon by the supply and demand parties. 6.7 The roller diameter, the rated load of the roller frame and the maximum and minimum diameters of the simplified workpiece shall comply with the provisions of Table 7. 6.8 The center distance of each pair of rollers on the welding roller frame must be adjusted accordingly according to the diameter of the simplified workpiece to ensure that the wrap angle of the two rollers to the simplified workpiece is greater than 45 and less than 110°
6.9 When the simplified workpiece is welded on the anti-axial movement roller frame, the axial movement of the workpiece should be less than ±3mm during the entire welding process.
6.10 The minimum power of the active roller drive motor is recommended to be selected according to Table 8. The power values listed in Table 8 are the power when one motor drives a pair of active rollers. If two motors are used to drive two active hydraulic wheels respectively, the power value of the motor should be half of the value listed in Table 8. 6.11 The safety indicators of the electrical control system should meet the requirements of GB4064. 6.12 The welding roller frame should be made of high-quality steel. If a welded structure base is used, stress relief heat treatment must be performed after welding. 6.13 Before leaving the factory, the non-working surface of the roller frame should be painted. 6.14 The welding roller frame should be equipped with a fixed lifting hook at an appropriate position. 7 Inspection and Acceptance
7.1 Factory Inspection
Before the roller frame leaves the factory, the manufacturing and assembly quality shall be inspected according to the items and accuracy mentioned in 6.4, and a no-load test run shall be carried out. 7.1.1 Check the quality of transmission parts such as gears and worm gear pairs according to the 8th grade accuracy and inspection method in GB/T10095GB/T10089. 7.1.2 Place the roller frame on the platform and use a height gauge to measure the size from the lower reference surface of the roller frame base to the center of the roller. It shall meet the requirements of 6.4.2. 7.1.3 Use a dial indicator to measure the circular runout of the roller. It shall meet the requirements of 6.4.3. 7.1.4 Place the roller frame on the platform and use a height gauge to measure the difference in the center height of each roller at both ends, which is the parallelism between the roller axis and the bottom surface of the base; use a flat ruler, a square box, and a height gauge to measure the horizontal dimension difference between the two ends of the roller to the base and the side of the ground rail, which is the parallelism of the two roller axes and the parallelism of the roller axis and the side of the ground rail. The value should meet the requirements of 6.4.4. 7.1.5 Use a flat ruler and an external diameter dial indicator to measure the center distance between the two rollers, which should meet the requirements of 6.4.5. 7.1.6 No-load test run
7.1.6.1 The no-load test run time should be no less than 1 hour. Check whether the rotation of each driving wheel is stuck, and whether the reduction box and gearbox have abnormal sounds. 482
JB/T 9187
Figure 1 Schematic diagram of parallelism between roller axes and base surface Rubber
Figure 2 Schematic diagram of wheel surface combination
7.1.6.2 When the motor is adjusted to the highest and lowest speeds, use a linear speed measuring instrument to check the maximum and minimum circular speeds of the roller respectively. They should meet the requirements of 6.2, and the fluctuation of the circumferential speed should meet the requirements of 6.3. 7.2 Type test
Type test can be determined by negotiation between the supply and demand parties, and should be carried out by the user if necessary. 483
Roller diameter
Rated load X
Minimum power of motor
7.2.1 Load test
JB/T 91871999
Table 7 Roller diameter and rated load
Minimum power of main roller motor
Simplified workpiece diameter
Minimum diameter
Maximum diameter
7.2.1.1 The roller frame is subjected to load test under rated load (the test load of roller frame above 50t is selected by the user below the rated load).
7.2.1.2 The temperature rise of the driving motor measured by the resistance method after reaching thermal equilibrium at room temperature of 20℃ and natural ventilation conditions shall be less than the values listed in Table 9.
Table 9 Allowable temperature rise of motor
Insulation grade of motor
Allowable temperature rise
7.2.1.3 The linear velocity of the cylindrical workpiece surface shall meet the requirements of 6.3 when the linear velocity measuring instrument is used. F
7.2.1.4 For the anti-vibration roller frame, the total axial movement of the workpiece shall meet the requirements of 6.9 during the entire load test time. 8 Marking, packaging, transportation and storage
8.1 The label of the welding roller frame shall include the model, rated load, roller linear velocity range, diameter range of the cylindrical workpiece, motor power, network rated voltage, roller frame deadweight, roller frame external dimensions, factory number, factory date, manufacturer name, etc. 8.2 The packaging box shall be sturdy, rainproof and easy to lift. It can be packaged in parts. 8.3 The packaging should also include the product certificate, instruction manual, installation drawing, packing list and other technical documents. 8.4 Dumping and strong vibration are not allowed during transportation. 8.5 Before the welding roller frame leaves the factory and after it arrives, if it is not installed immediately in the factory, the storage site should meet the requirements of 5.2 to 5.4.5 The welding roller frame must be equipped with a reliable welding cable rotary grounding device, and the welding current is not allowed to flow through the roller frame bearing. 6.6 The material of the roller working surface is recommended to be selected according to the rated load of the roller. 6.6.1 When the rated load of the roller frame is X≤10t, a rubber wheel surface is used. 6.6.2 When the rated load of the roller frame is X, 10t but ≤60t, a metal-rubber combined wheel surface is used. The metal wheel surface is load-bearing and the rubber wheel surface is driven. The combination method is shown in Figure 2a) and Figure 2b).
6.6.3 When the rated load of the roller frame is X, >60t, a metal wheel surface is used. 6.6.4 The material of the roller working surface of the long-axis roller frame shall be agreed upon by the supply and demand parties. 6.7 The roller diameter, the rated load of the roller frame and the maximum and minimum diameters of the simplified workpiece shall comply with the provisions of Table 7. 6.8 The center distance of each pair of rollers on the welding roller frame must be adjusted accordingly according to the diameter of the simplified workpiece to ensure that the wrap angle of the two rollers to the simplified workpiece is greater than 45 and less than 110°
6.9 When the simplified workpiece is welded on the anti-axial movement roller frame, the axial movement of the workpiece should be less than ±3mm during the entire welding process.
6.10 The minimum power of the active roller drive motor is recommended to be selected according to Table 8. The power values listed in Table 8 are the power when one motor drives a pair of active rollers. If two motors are used to drive two active hydraulic wheels respectively, the power value of the motor should be half of the value listed in Table 8. 6.11 The safety indicators of the electrical control system should meet the requirements of GB4064. 6.12 The welding roller frame should be made of high-quality steel. If a welded structure base is used, stress relief heat treatment must be performed after welding. 6.13 Before leaving the factory, the non-working surface of the roller frame should be painted. 6.14 The welding roller frame should be equipped with a fixed lifting hook at an appropriate position. 7 Inspection and Acceptance
7.1 Factory Inspection
Before the roller frame leaves the factory, the manufacturing and assembly quality shall be inspected according to the items and accuracy mentioned in 6.4, and a no-load test run shall be carried out. 7.1.1 Check the quality of transmission parts such as gears and worm gear pairs according to the 8th grade accuracy and inspection method in GB/T10095GB/T10089. 7.1.2 Place the roller frame on the platform and use a height gauge to measure the size from the lower reference surface of the roller frame base to the center of the roller. It shall meet the requirements of 6.4.2. 7.1.3 Use a dial indicator to measure the circular runout of the roller. It shall meet the requirements of 6.4.3. 7.1.4 Place the roller frame on the platform and use a height gauge to measure the difference in the center height of each roller at both ends, which is the parallelism between the roller axis and the bottom surface of the base; use a flat ruler, a square box, and a height gauge to measure the horizontal dimension difference between the two ends of the roller to the base and the side of the ground rail, which is the parallelism of the two roller axes and the parallelism of the roller axis and the side of the ground rail. The value should meet the requirements of 6.4.4. 7.1.5 Use a flat ruler and an external diameter dial indicator to measure the center distance between the two rollers, which should meet the requirements of 6.4.5. 7.1.6 No-load test run
7.1.6.1 The no-load test run time should be no less than 1 hour. Check whether the rotation of each driving wheel is stuck, and whether the reduction box and gearbox have abnormal sounds. 482
JB/T 9187
Figure 1 Schematic diagram of parallelism between roller axes and base surface Rubber
Figure 2 Schematic diagram of wheel surface combination
7.1.6.2 When the motor is adjusted to the highest and lowest speeds, use a linear speed measuring instrument to check the maximum and minimum circular speeds of the roller respectively. They should meet the requirements of 6.2, and the fluctuation of the circumferential speed should meet the requirements of 6.3. 7.2 Type test
Type test can be determined by negotiation between the supply and demand parties, and should be carried out by the user if necessary. 483
Roller diameter
Rated load X
Minimum power of motor
7.2.1 Load test
JB/T 91871999
Table 7 Roller diameter and rated load
Minimum power of main roller motor
Simplified workpiece diameter
Minimum diameter
Maximum diameter
7.2.1.1 The roller frame is subjected to load test under rated load (the test load of roller frame above 50t is selected by the user below the rated load).
7.2.1.2 The temperature rise of the driving motor measured by the resistance method after reaching thermal equilibrium at room temperature of 20℃ and natural ventilation conditions shall be less than the values listed in Table 9.
Table 9 Allowable temperature rise of motor
Insulation grade of motor
Allowable temperature rise
7.2.1.3 The linear velocity of the cylindrical workpiece surface shall meet the requirements of 6.3 when the linear velocity measuring instrument is used. F
7.2.1.4 For the anti-vibration roller frame, the total axial movement of the workpiece shall meet the requirements of 6.9 during the entire load test time. 8 Marking, packaging, transportation and storage
8.1 The label of the welding roller frame shall include the model, rated load, roller linear velocity range, diameter range of the cylindrical workpiece, motor power, network rated voltage, roller frame deadweight, roller frame external dimensions, factory number, factory date, manufacturer name, etc. 8.2 The packaging box shall be sturdy, rainproof and easy to lift. It can be packaged in parts. 8.3 The packaging should also include the product certificate, instruction manual, installation drawing, packing list and other technical documents. 8.4 Dumping and strong vibration are not allowed during transportation. 8.5 Before the welding roller frame leaves the factory and after it arrives, if it is not installed immediately in the factory, the storage site should meet the requirements of 5.2 to 5.4.1 Load test
JB/T 91871999
Table 7 Roller diameter and rated load
Minimum power of main roller motor
Simplified workpiece diameter
Minimum diameter
Maximum diameter
7.2.1.1 The roller frame is subjected to load test under rated load (the test load of roller frame above 50t is selected by the user below the rated load).
7.2.1.2 The temperature rise of the driving motor measured by the resistance method after reaching thermal equilibrium under natural ventilation conditions at room temperature of 20℃ shall be less than the values listed in Table 9.
Table 9 Allowable temperature rise of motor
Insulation grade of motor
Allowable temperature rise
7.2.1.3 The surface linear velocity of the cylindrical workpiece is detected by a linear velocity measuring instrument, which shall meet the requirements of 6.3. F
7.2.1.4 For the anti-motion roller frame, the total axial movement of the workpiece during the entire load test time shall meet the requirements of 6.9. 8 Marking, packaging, transportation and storage
8.1 The label of the welding roller frame shall include the model, rated load, roller linear speed range, simplified workpiece diameter range, motor power, network rated voltage, roller frame deadweight, roller frame dimensions, factory number, factory date, manufacturer name, etc. 8.2 The packaging box should be sturdy, rainproof and easy to lift. It can be packaged in parts. 8.3 The product certificate, instruction manual, installation drawing, packing list and other technical documents should be included in the packaging. 8.4 Dumping and strong vibration are not allowed during transportation. 8.5 Before the welding roller frame leaves the factory and when it is not installed immediately after arrival, the storage site should meet the requirements of 5.2 to 5.4. 4841 Load test
JB/T 91871999
Table 7 Roller diameter and rated load
Minimum power of main roller motor
Simplified workpiece diameter
Minimum diameter
Maximum diameter
7.2.1.1 The roller frame is subjected to load test under rated load (the test load of roller frame above 50t is selected by the user below the rated load).
7.2.1.2 The temperature rise of the driving motor measured by the resistance method after reaching thermal equilibrium under natural ventilation conditions at room temperature of 20℃ shall be less than the values listed in Table 9.
Table 9 Allowable temperature rise of motor
Insulation grade of motor
Allowable temperature rise
7.2.1.3 The surface linear velocity of the cylindrical workpiece is detected by a linear velocity measuring instrument, which shall meet the requirements of 6.3. F
7.2.1.4 For the anti-motion roller frame, the total axial movement of the workpiece during the entire load test time shall meet the requirements of 6.9. 8 Marking, packaging, transportation and storage
8.1 The label of the welding roller frame shall include the model, rated load, roller linear speed range, simplified workpiece diameter range, motor power, network rated voltage, roller frame deadweight, roller frame dimensions, factory number, factory date, manufacturer name, etc. 8.2 The packaging box should be sturdy, rainproof and easy to lift. It can be packaged in parts. 8.3 The product certificate, instruction manual, installation drawing, packing list and other technical documents should be included in the packaging. 8.4 Dumping and strong vibration are not allowed during transportation. 8.5 Before the welding roller frame leaves the factory and when it is not installed immediately after arrival, the storage site should meet the requirements of 5.2 to 5.4. 484
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