Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T 1306-94
Electric Single Girder Crane
1994-07-18 Issued
Ministry of Machinery Industry of the People's Republic of China
1995-07-01 Implementation
Mechanical Industry Standard of the People's Republic of China
Electric Single Girder Crane
1 Subject Content and Scope of Application
JB/T 1306-94
Replaces JB1306-84
This standard specifies the type and basic parameters, technical requirements, test methods, inspection rules, etc. of electric single girder cranes. This standard applies to general-purpose electric single girder cranes (hereinafter referred to as cranes) with working levels A3 to A5 and working environment temperatures of 25℃~+40℃. The same or similar parts of special electric single girder cranes can also be used for reference. This standard does not apply to cranes working under the following conditions: a.
Environments with explosion hazards and fire hazards; places with relative humidity greater than 85% and environments filled with corrosive gases; b.
Lifting molten metal, toxic substances and flammable and explosive items. 2 Reference standards
GB1591
GB3323
GB3768
GB 3811
GB5905
GB8923
GB9286
GB10095
GB10183
GB11345||tt| |GB/T 13306
GB/T13384
JB2299
JB/T 6391.2
JB/T 6392.2
Packaging, storage and transportation pictorial markingwwW.bzxz.Net
Technical conditions for high-quality carbon structural steel
Carbon structural steel
Maximum lifting capacity series for lifting machinery
Low alloy structural steel
Radiography and quality classification of steel fusion welded butt jointsSimplified method for determining sound power level of noise sources
Crane design specifications
Crane test specifications and procedures
Crane rubber buffers
Rust grade and rust removal grade of steel surface before paintingColor paint and varnish paint film Scratching test
Precision of involute cylindrical gears
Tolerances for manufacturing and rail installation of bridge and gantry cranesMethods for manual ultrasonic testing of steel welds and grading of testing results
General technical requirements for packaging of electromechanical products
Tropical low-voltage electrical appliances
Painting colors and safety signs for mining, engineering, lifting and transportation machinery productsTechnical requirements for sliding transmission devices for cranesTechnical requirements for crane wheels
JB/ZQ4000.3
General technical requirements for welded parts
ZB J80 013.2
ZBJ80013.3
Technical conditions for wire rope electric hoists
Conical rotor motors for wire rope electric hoists Approved by the Ministry of Machinery Industry on 1994-07-18
Implementation on 1995-07-01
3 Types and basic parameters
3.1 Type
JB/T 1306—94
3.1.1 The basic types of cranes are divided into the following types according to the position and operation mode of the lifting mechanism: a.
LDC.
The crane with electric hoist trolley running on the lower flange of the main beam and electric hoist arranged under the main beam (Figure 1) has the product code of LDP. The crane with electric hoist installed on the angle trolley (Figure 2) has the product code of LDP. The crane with electric hoist trolley running on the lower flange of the main beam and electric hoist arranged on the side of the main beam (Figure 3) has the product code of JB/T 1306 94
3.1.2 The basic types of cranes can be divided into cranes operated by the driver's cab and cranes operated on the ground according to the operation mode. 3.1.3 The main beam of the crane generally adopts I-shaped, box-shaped or combined structure. 3.1.4 Model indication method
Operation mode: ground operation plus \D\, cab operation plus S\Working level
Span, m
Rated lifting capacity, t
Product code (see 3.1.1)
3.1.5 Marking example
Rated lifting capacity 8t, span 25.5m, working level A5. The marking of LDP crane operated by cab is: Crane LDP8-25.5A5SJB/T130694 Rated lifting capacity is 5t, span 16.5m, working level A4, and the marking of LD crane operated by ground is: b.
Crane LD5-16.5A4DJB/T1306-94c.
Rated lifting capacity 10t, span 13.5m, working level A5, ground-operated LDC crane is marked as: Crane LDC10-13.5A5 DJB/T1306-94 3.2 Basic parameters
3.2.1 The rated lifting capacity of the crane (code: Gm, unit: t) series is as follows: 1, 1.6, 2, 2.5, 3.2, 4, 5, 6.3, 8, 10.12.5, 16 3.2.2 The span of the crane (code: S, unit: m) is as follows: 7.5, 8, 10.5, 11, 13.5, 14, 16.5, 17, 19.5 22.5, 25.5, 28.5, 31.5 3.2.3 The lifting height of the crane (unit: m) is as follows: 5, 6.3, 8, 10, 12.5, 16, 20.
3.2.4 The operating speeds of the various mechanisms of the crane shall be selected according to Table 1. Table 1
Mechanism type
Driver's cab control
Crane operating mechanism
Trolley operating mechanism
Lifting mechanism
3.3 Dimensions
0. 5~12. 5
The limit dimensions of the crane shall comply with the provisions of Figures 1 to 3 and Table 2
Rated lifting capacity
1,1.6,2,2.5,3.2.4
10,12.5，16
Side width
Distance between driver's cab and ground
≥2000
Above clearance
Ground control
0.5~~12.5
Side clearance
4 Technical requirements
JB/T 1306...94
The design and manufacture of cranes shall comply with the relevant provisions of GB3811 and this standard. 4.1 Environmental conditions
4.1.1 The power supply of the crane is three-phase AC. The rated frequency is 50Hz and the rated voltage is 380V. The upper limit of the voltage fluctuation allowed on the motor and electrical control equipment is 10% of the rated voltage and the lower limit (at peak current) is 10% of the rated voltage. The internal voltage loss of the crane is 3%.
4.1.2 The installation of the crane running track shall comply with the provisions of GB10183. 4.1.3 The altitude of the crane installation and use site shall not exceed 2000m (the motor capacity shall be checked when it exceeds 1u00m). 4.1.4 The radiant heat temperature of the crane hook part of the hoisted objects shall not exceed 300℃. 4.1.5 The ambient temperature shall not exceed 1040℃, and the average temperature within 24h shall not exceed +35℃4.1.6 Cranes should generally work indoors.
4.2 Performance in use
4.2.1 Parameters related to the use of cranes shall comply with Article 3.2 of this standard or the requirements put forward by the user in the order contract. 4.2.2 The static rigidity of the crane is stipulated as follows: the vertical static deflection caused by the rated lifting weight and the deadweight of the trolley in the middle of the main beam span shall not exceed S/800.
4.2.3 The dynamic rigidity of the crane is generally not stipulated in the supply. Only when the user has requirements for this, it shall be checked according to the following provisions: when the trolley is located in the middle of the span, the full-load natural frequency of the main beam shall not be less than 2H2. 4.2.4 The horizontal rigidity of the crane is stipulated as follows: the deformation caused by the crane in the middle of the span in the horizontal direction shall not exceed S/2000. 4.3 Materials and heat treatment
4.3.1 The material of the metal structural parts of the crane shall be in accordance with GB700 for carbon structural steel and GB1591 for low-alloy structural steel. The selection of grades shall comply with or not be lower than the provisions of Table 3.
Component category
Working environment temperature
Steel grade
Important component 1
Not less than -20%
Q235-B
Note: 1) Important components refer to main beams, end beams, and trolley frames. Less than -20~25℃
Q235-D
2) The impact energy is required to be not less than 27J at -20℃. Please propose or make additional test 4.3 when ordering.2 The wheels of the trolley shall be made of 45 steel with performance not lower than that in GB699 and shall be quenched and tempered. Other components
4.3.3 The quality of metal materials shall be certified by the supplier, otherwise the manufacturer shall conduct chemical analysis and mechanical performance tests. 4.4 Main components
4.4.1 The electric hoist with steel wire rope for the lifting mechanism shall comply with the provisions of ZBJ80013.2. 4.4.2 The running wheels of the crane trolley shall comply with the provisions of JB/T6392.2. 4.4.3 The crane shall be equipped with rubber buffers that comply with the provisions of GB6164.2 or other buffers with comprehensive performance not lower than that of GB6164.2.
4.4.4 After the wheel is installed, its reference end face should be on the inside of the crane, and the end face circular runout should not exceed the value specified in Table 4. Table 4
Wheel diameter
End face circular runout
2250~500
The precision of the gear pair for the operating mechanism should not be lower than the 8-8-7 level specified in CB10095, and the open gear should not be lower than the 9-8-8 level.
JB/T1306-94
4.4.6 The performance of the matching motor should not be lower than the relevant provisions in ZBJ80013.3. 4.5 Welding
4.5.1 The butt welds in the tension zone of the main beam and LDP type trolley frame should be subjected to non-destructive testing. The radiographic flaw detection should not be lower than the 11 level specified in GB3323, and the ultrasonic flaw detection should meet the 1 level in GB11345. 4.5.2 There shall be no obvious visual defects such as cracks, holes, solid slag inclusions, lack of fusion, and lack of penetration on the outside of the weld. The weld quality assessment level shall comply with the provisions of JB/ZQ4000.3. The butt weld is BS grade and the fillet weld is BK grade. 4.5.3 The welding rods, welding wires and flux used for welding shall be compatible with the materials of the welded parts. 4.6 Bridge (after the assembly of the crane operating mechanism) 4.6.1 Local flatness of the web of the main beam: When the web height is not more than 700mm, check with a 500mm flat ruler. The compression area of the web should not be more than 3.5mm, and the tension area of the web should not be more than 5.5mm; when the web height is more than 700mm, check with a 1000mm flat ruler. The compression area of the web should not be more than 5.5mm, and the tension area of the web should not be more than 8mm. 4.6.2 The camber F of the main beam shall be (1/1000~1.4/1000)S. The maximum camber shall be located in the middle of the span S/10 (see Figure 4). The correction value of the influence of the deadweight of the steel wire on the camber is shown in Appendix A (Supplement). Figure 4
4.6.3 The horizontal bending value of the main beam f≤S/2000, which is measured on the web 100mm away from the top surface of the main beam. For LDP type cranes, only concave bending towards the main track is allowed (see Figure 4). 4.6.4 Crane span deviation AS: When S≤10m, it is ±2mm. When S10m, AS=[2+0.1(S-10)mm. Its value can be selected according to Table 5 after rounding and simplification. The tension and correction value used to measure the crane span are shown in Appendix B (Supplement). Table 5
>10~15
>15~20
>20~25
>25~30
4.6.5 The diagonal difference measured by the reference point of the wheel is 1E1-E1≤5mm (see Figure 4). This value is allowed to be controlled before the running mechanism is assembled.
4.6.6 The base distance W is (1/8～1/5)S, but generally not less than S/6.5
JB/T 1306-94
4.6.7 Base distance deviation AW, when W≤3m, AW is ±3mm. When W>3m, AW is ±W/1000.4.7 Assembly
4.7.1 After the crane is assembled, the vertical deflection of the wheel is tgα=0.0005～0.0030 (see Figure 5). Figure 5
4.7.2 After the crane is assembled, the horizontal deflection of the wheel axis tg9 = -0.0015~+0.0015 (see Figure 6). Figure 6
4.7.3 After the crane is assembled, the height difference △h of the four wheel support points (see Figure 7) should meet the requirements of Table 6, Table 6
Span S
>10~15
>15~20
≥20~25
>25~31. 5
4.8 Steel pretreatment and painting
JB/T1306—94
4.8.1 The steel used for the metal structure of the crane should be treated with surface rust removal, and the quality of important components should reach Sa2% or St3 in GB8923, and other parts should reach Sa2 or St2. 4.8.2 The crane surface paint should be uniform, bright, complete and consistent in color, and should not have defects such as roughness, paint leakage, wrinkles, pinholes and sagging. 4.8.3 The film thickness of the topcoat is 25~35μm per layer. The total thickness is 75~105um4.8.4 The adhesion of the paint film of the main load-bearing components should meet the first-level quality requirements in GB9286. 4.8.5 Before the crane leaves the factory, anti-rust measures should be taken for all exposed processed surfaces. 4.8.6 The paint color and color sample of the crane should generally comply with the provisions of JB2299. 4.9 Electrical equipment
4.9.1 The supporting electrical appliances should have a certificate of conformity, and the supporting electrical appliances in the humid tropical zone should comply with the provisions of JB834. 4.9.2 The trolley feeder can use busbars or cables. When the LDP type crane uses angle steel busbars, protective devices should be installed. When there is a driver's cab, the busbar and the driver's cab should generally be arranged at both ends of the crane main beam. It is recommended that the busbar adopts a sliding connection transmission device that complies with JB/T6391.2.
4.9.3 The electric hoist and trolley are fed by cables or sliding connection transmission devices. The steel wire used for erecting mobile cables must be galvanized, and the pulleys and pulley tracks must be rust-free, painted or galvanized. 4.9.4 The wire protection tube should be firmly fixed on the bridge frame, and the pipe mouth should be equipped with a wire protection nozzle. The wires laid in the wire protection tube shall not have joints. 4.9.5 The wires to be laid in the wire protection tube and the wires laid inside the control box and the driver's cab shall all be copper core multi-strand wires. The cross-sectional area of the control circuit wire shall not be less than 1.5mm2, and the cross-sectional area of the main circuit shall be selected according to the controlled power. And it shall not be less than 1.5mm. 4.9.6 The metal casing of all electrical equipment on the crane must be effectively grounded. It is allowed to use the crane track as the grounding wire. The total grounding resistance shall not be greater than 4.
4.9.7 After all the electrical equipment of the crane is installed, the insulation resistance of its main circuit to the ground shall not be less than 0.8M0 in a general environment. It shall not be less than 0.4M0 in a humid environment.
4.10 Safety and hygiene
4.10.1 The driver's cab must be safe and reliable, and the connection between the driver's cab and the suspension or support part must be firm. 4.10.2 The top of the driver's cab should be able to withstand a static load of 2.5kN/m°. 4.10.3 The headroom height in the driver's cab should not be less than 1.8m. The height of the fence of the driver's cab should not be less than 1050mm. 4.10.4 Cranes working in high temperature and dusty environments should be equipped with closed driver's cabs. 4.10.5 The door of the driver's cab should generally open inward or use a sliding door. When there is a platform outside the driver's cab, the door is allowed to open outward. 4.10.6 The driver's cab should have a good view and appropriate space, so as to make the driver feel comfortable and easy to operate. 4.10.7 The driver's cab should be equipped with comfortable and adjustable seats, door locks, fire extinguishers and electric bells or alarms. If necessary, communication devices should also be installed. 4.10.8 The driver should be able to easily and reliably connect and disconnect the main power supply of the crane (except for lighting signals). 4.10.9 The crane should be operated with low voltage (36V or 42V). 4.10.10 The door to enter the crane and the door from the driver's cab to the bridge must be equipped with an electrical interlocking protection device. When any door is opened, all the mechanisms of the crane should not work.
4.10.11 When using a linkage control console, the zero position gear should be obvious or equipped with a zero position self-locking, and the operating direction of the handle should be the same as the operating direction of the crane and trolley operating mechanism.
4.10.12 When the crane is in a non-enclosed factory building without other external noise interference and the lifting height is not less than 5m, the noise of the whole machine measured on the ground shall not be greater than 85dB(A). 5 Test method
The crane test shall follow the specifications and procedures specified in GB5905. 5.1 Visual inspection
The visual inspection shall include whether the specifications or status of all important components meet the requirements, such as: JB/T 1306--94
Electrical equipment of each mechanism, safety devices.Controller, lighting and signal system: crane metal structure and its connectors, ladder, passage, driver's cab; all protective devices: hook; wire rope and its fixings: pulley block and its axial fixings.
During inspection, it is not necessary to disassemble any parts, but the covers that should be opened during normal maintenance and inspection should be opened, such as the limit switch cover. Visual inspection should also include checking whether the necessary certificates have been submitted and reviewed. 5.2 Qualification test
5.2.1 Turn on the power, start each mechanism, make the trolley run back and forth along the full length of the main beam once, without any jamming, start and check other mechanisms. All should operate normally. The control system and safety devices should be sensitive and accurate. 5.2.2 After 2~~3 times of gradual loading until the rated lifting weight, perform action tests and tests in all directions to verify whether the items listed in Table 7 meet the requirements of the design drawings and this standard. The method for measuring noise shall be in accordance with the provisions of GB3768. Table 7
Load lifting height
Hook limit position
Load lifting speed
Crane and trolley running speed
Rated load descending braking
Static rigidity of crane measured at the middle span of main beam
Static deflection
Horizontal rigidity of crane measured at the horizontal bending value of main beam
Dynamic rigidity of crane measured at full load descending
Natural frequency of main beam at the middle span during braking
Noise of crane| |tt||Insulation of each circuit in the electric control equipment from the ground
Reliability of the limiter
Paint film adhesion of the main load-bearing components
5.3 Load lifting capacity test
5.3.1 Static load test
Unit of measurement
Required value
Limit deviation
Nominal value (according to the design drawing
≤/100
See Article 1.2.2 of this standard
See Article 4.2.4 of this standard
See Article 4.2.3 of this standard Article
See Article 4.10.12 of this standard
See Article 4.9.6 of this standard and
Can stop accurately
See Article 4.8.4 of this standard
No assessment for slow speed when double speed
v--stable lifting within 1min
Before the test, the empty trolley should be parked at the extreme position of the main beam end, and the reference point for measuring the deflection of the main beam should be determined in the middle of the span. The trolley should be driven to the middle of the main beam span, and the test load of 1.25G should be lifted, and the height from the ground should be 100 to 200mm. The suspension time shall not be less than 10 minutes. After unloading, drive the trolley to the end of the main beam and check for permanent deformation. Repeat this three times. The second time, the main beam is allowed to have a slight deformation. The third time, the main beam shall not have permanent deformation. Drive the trolley to the end of the main beam and check that the actual camber of the main beam shall not be less than 0.8S/1000.
After the static load test, all parts of the crane shall not have quality problems such as permanent deformation, cracks, paint peeling, loose or damaged joints.
5.3.2 Dynamic load test
JB/T 1306-94
The dynamic load test of each mechanism of the crane should be carried out separately first, and then the joint action test should be carried out, and the two mechanisms should be started at the same time. The test load is 1.1G. According to the corresponding working level of the crane, each action should be started and braked repeatedly within the entire range of motion. When the suspended test load is started in the air, the test load should not have reverse action. According to its working cycle, the test time should last for 1 hour.
If each component can complete its functional test and no looseness or damage is found in the subsequent visual inspection, the test is considered to be qualified.
6 Inspection rules
6.1 Factory inspection
6.1.1 Each crane should be inspected at the factory. 6.1.2 Cranes should generally be pre-installed at the manufacturer, and the driver's cab may not be installed during pre-installation. 6.1.3 Carry out an empty operation test, start each mechanism separately, and run it in the forward and reverse directions. The cumulative time of the test shall not be less than 5 minutes. 6.1.4 The quality inspection department of the manufacturer shall inspect the product quality item by item according to this standard (except the test items specified in Chapter 5) and the product drawings. After passing the inspection, the product shall be allowed to leave the factory and a product certificate of conformity shall be issued to the user. 6.2 Type inspection
6.2.1 Finalized products shall be subject to type inspection every year, with no less than 2 units inspected. Type inspection shall also be conducted in any of the following situations: trial production and finalization appraisal of transferred production;
After formal production, if there are major changes in structure, materials, and processes that may affect product performance; when the product is resumed after being discontinued for more than two years. c.
When the factory inspection results are significantly different from the last type inspection: d.
The national quality supervision agency proposes requirements for type inspection. e.
6.2.2 Type inspection is based on factory inspection and adds the inspection and test contents specified in Chapter 5. 6.2.3 If the manufacturer does not have the conditions to conduct the test, it should go to the user's site for type inspection. 6.2.4 The cranes that undergo type inspection should be designated by the manufacturer's quality inspection department or quality supervision agency based on actual conditions and possibilities, and should be allocated according to the type, lifting weight, span size, and working level, so that they can gradually achieve comprehensive assessment. 7 Marking, packaging, transportation and storage
7.1, A conspicuous lifting weight tonnage plate should be set at the mid-span of the crane main beam. The tonnage plate should be marked with a, rated lifting weight;
b. Manufacturer name and factory logo, trademark.
7.2 The sign of the crane should be installed in a conspicuous position of the crane (the one operated in the driver's cab should be installed in the driver's cab). The sign of the crane should comply with the provisions of GB/T13306. It should mainly indicate: a, product model and name;
b. Working level;
Rated lifting weight:
d. Span;
Crane operating speed:
f. Factory serial number, manufacturing date and manufacturer name. 7.3 The packaging, transportation and storage of cranes shall comply with the relevant provisions of GB191 and (GB/T13384: 7.4 In order to prevent the main beam of the crane from deformation during lifting, transportation and storage, except for conditions that do not allow, it shall be lifted, transported and stored according to the use position.
7.5 The following materials shall be attached to the crane when it leaves the factory: a. Crane qualification manual;
b. Installation, use and maintenance instructions:
Packing list;
JB/T1306·94
Outsourced parts and equipment shall be accompanied by the manufacturer's factory qualification certificate. d.
8 Warranty period
The product shall be able to work normally within 12 months from the date of use, but not more than 18 months from the date of shipment, provided that the user properly keeps it, reasonably installs it and uses it correctly.
JB/T 1306-94
Appendix A
Correction value when the deadweight of the steel wire affects the camber (supplement)
Correction value when the deadweight of the steel wire affects the camber when measuring the camber is shown in Table A1. Table Al
Crane span
The spring balance tension is 150N during measurement.
The diameter of the steel wire is 0.49~0.52mm.
The actual camber value is obtained by subtracting the correction value from the reading on the steel ruler. Correction value9.6 and
Can stop accurately
See Article 4.8.4 of this standard
No assessment for slow speed at double speed
v--stable lifting within 1min
Before the test, the unloaded trolley should be parked at the extreme position of the main beam end, and the reference point for measuring the deflection of the main beam should be determined in the middle of the span. The trolley should be driven to the middle of the main beam span, and the test load of 1.25G should be lifted, and the height should be 100-200mm from the ground. The suspension time should not be less than 10min. After unloading, the trolley should be driven to the end of the main beam and then checked for permanent deformation. Repeat this three times. The main beam is allowed to have a slight deformation for the second time, and the main beam should not have permanent deformation for the third time. Drive the trolley to the end of the main beam and check that the actual camber of the main beam should not be less than 0.8S/1000.
After the static load test, all parts of the crane should not have quality problems such as permanent deformation, cracks, paint peeling, loose or damaged joints.
5.3.2 Dynamic load test
JB/T 1306-94
The dynamic load test of each mechanism of the crane should be carried out separately first, and then the joint action test should be carried out, and the two mechanisms should be started at the same time. The test load is 1.1G. According to the corresponding working level of the crane, each action should be started and braked repeatedly within the entire range of motion. When the suspended test load is started in the air, the test load should not have reverse action. According to its working cycle, the test time should last for 1 hour.
If each component can complete its functional test and no looseness or damage is found in the subsequent visual inspection, the test is considered to be qualified.
6 Inspection rules
6.1 Factory inspection
6.1.1 Each crane should be inspected before delivery. 6.1.2 Cranes should generally be pre-installed at the manufacturer, and the driver's cab may not be installed during pre-installation. 6.1.3 Perform an idling test, start each mechanism separately, and run it in the forward and reverse directions. The cumulative test time shall not be less than 5 minutes. 6.1.4 The quality inspection department of the manufacturer shall inspect the product quality item by item according to this standard (except the test items specified in Chapter 5) and the product drawings. After passing the inspection, it shall be allowed to leave the factory and a product certificate of conformity shall be issued to the user. 6.2 Type inspection
6.2.1 Finalized products shall be subject to type inspection every year, and the number of inspections shall not be less than 2 units. Type inspection shall also be conducted in any of the following situations: trial production and finalization appraisal of production in the transfer factory;
After formal production, if there are major changes in structure, materials, and processes that may affect product performance: when the product is resumed after being discontinued for more than two years. c
When the factory inspection results are significantly different from the last type inspection: d.
The national quality supervision agency proposes the requirements for type inspection. e.
6.2.2 Type inspection is based on the factory inspection and adds the inspection and test contents specified in Chapter 5. 6.2.3 If the manufacturer does not have the conditions to conduct the test, the type inspection should be carried out at the user's site. 6.2.4 The cranes for type inspection should be designated by the manufacturer's quality inspection department or quality supervision agency based on actual conditions and possibilities, and should be allocated according to the type, lifting capacity, span size, and working level, so that they can gradually achieve comprehensive assessment. 7 Marking, packaging, transportation and storage
7.1, A conspicuous lifting capacity tonnage plate should be set at the mid-span of the crane main beam. The tonnage plate should be marked with a, rated lifting capacity;
b. manufacturer name and factory logo, trademark.
7.2 The sign of the crane should be installed in a conspicuous position of the crane (if the crane is operated from the driver's cab, it should be installed in the driver's cab). The sign of the crane should comply with the provisions of GB/T13306. It should mainly indicate: a. Product model and name; b. Working level; rated lifting capacity: d. Span; operating speed of the crane: f. Factory number, manufacturing date and manufacturer's name. 7.3 The packaging, transportation and storage of cranes shall comply with the relevant provisions of GB191 and (GB/T13384: 7.4 In order to prevent the main beam of the crane from deformation during lifting, transportation and storage, except for conditions that do not allow, it shall be lifted, transported and stored according to the use position.
7.5 The following materials shall be attached to the crane when it leaves the factory: a. Crane qualification manual;
b. Installation, use and maintenance instructions:
Packing list;
JB/T1306·94
Outsourced parts and equipment shall be accompanied by the manufacturer's factory qualification certificate. d.
8 Warranty period
The product shall be able to work normally within 12 months from the date of use, but not more than 18 months from the date of shipment, provided that the user properly keeps it, reasonably installs it and uses it correctly.
JB/T 1306-94
Appendix A
Correction value when the deadweight of the steel wire affects the camber (supplement)
Correction value when the deadweight of the steel wire affects the camber when measuring the camber is shown in Table A1. Table Al
Crane span
The spring balance tension is 150N during measurement.
The diameter of the steel wire is 0.49~0.52mm.
The actual camber value is obtained by subtracting the correction value from the reading on the steel ruler. Correction value9.6 and
Can stop accurately
See Article 4.8.4 of this standard
No assessment for slow speed at double speed
v--stable lifting within 1min
Before the test, the unloaded trolley should be parked at the extreme position of the main beam end, and the reference point for measuring the deflection of the main beam should be determined in the middle of the span. The trolley should be driven to the middle of the main beam span, and the test load of 1.25G should be lifted, and the height should be 100-200mm from the ground. The suspension time should not be less than 10min. After unloading, the trolley should be driven to the end of the main beam and then checked for permanent deformation. Repeat this three times. The main beam is allowed to have a slight deformation for the second time, and the main beam should not have permanent deformation for the third time. Drive the trolley to the end of the main beam and check that the actual camber of the main beam should not be less than 0.8S/1000.
After the static load test, all parts of the crane should not have quality problems such as permanent deformation, cracks, paint peeling, loose or damaged joints.
5.3.2 Dynamic load test
JB/T 1306-94
The dynamic load test of each mechanism of the crane should be carried out separately first, and then the joint action test should be carried out, and the two mechanisms should be started at the same time. The test load is 1.1G. According to the corresponding working level of the crane, each action should be started and braked repeatedly within the entire range of motion. When the suspended test load is started in the air, the test load should not have reverse action. According to its working cycle, the test time should last for 1 hour.
If each component can complete its functional test and no looseness or damage is found in the subsequent visual inspection, the test is considered to be qualified.
6 Inspection rules
6.1 Factory inspection
6.1.1 Each crane should be inspected before delivery. 6.1.2 Cranes should generally be pre-installed at the manufacturer, and the driver's cab may not be installed during pre-installation. 6.1.3 Conduct an idling test, start each mechanism separately, and run it in the forward and reverse directions. The cumulative test time shall not be less than 5 minutes. 6.1.4 The quality inspection department of the manufacturer shall inspect the product quality item by item according to this standard (except the test items specified in Chapter 5) and the product drawings. After passing the inspection, it shall be allowed to leave the factory and a product certificate of conformity shall be issued to the user. 6.2 Type inspection
6.2.1 Finalized products shall be subject to type inspection every year, and the number of inspection units shall not be less than 2. Type inspection shall also be conducted in any of the following situations: trial production and finalization appraisal of production in the transfer factory;
After formal production, if there are major changes in structure, materials, and processes that may affect product performance: when the product is resumed after being discontinued for more than two years. c
When the factory inspection results are significantly different from the last type inspection: d.
The national quality supervision agency proposes the requirements for type inspection. e.
6.2.2 Type inspection is based on the factory inspection and adds the inspection and test contents specified in Chapter 5. 6.2.3 If the manufacturer does not have the conditions to conduct the test, the type inspection should be carried out at the user's site. 6.2.4 The cranes for type inspection should be designated by the manufacturer's quality inspection department or quality supervision agency based on actual conditions and possibilities, and should be allocated according to the type, lifting capacity, span size, and working level, so that they can gradually achieve comprehensive assessment. 7 Marking, packaging, transportation and storage
7.1, A conspicuous lifting capacity tonnage plate should be set at the mid-span of the crane main beam. The tonnage plate should be marked with a, rated lifting capacity;
b. manufacturer name and factory logo, trademark.
7.2 The sign of the crane should be installed in a conspicuous position of the crane (if the crane is operated from the driver's cab, it should be installed in the driver's cab). The sign of the crane should comply with the provisions of GB/T13306. It should mainly indicate: a. Product model and name; b. Working level; rated lifting capacity: d. Span; operating speed of the crane: f. Factory number, manufacturing date and manufacturer's name. 7.3 The packaging, transportation and storage of cranes shall comply with the relevant provisions of GB191 and (GB/T13384: 7.4 In order to prevent the main beam of the crane from deformation during lifting, transportation and storage, except for conditions that do not allow, it shall be lifted, transported and stored according to the use position.
7.5 The following materials shall be attached to the crane when it leaves the factory: a. Crane qualification manual;
b. Installation, use and maintenance instructions:
Packing list;
JB/T1306·94
Outsourced parts and equipment shall be accompanied by the manufacturer's factory qualification certificate. d.
8 Warranty period
The product shall be able to work normally within 12 months from the date of use, but not more than 18 months from the date of shipment, provided that the user properly keeps it, reasonably installs it and uses it correctly.
JB/T 1306-94
Appendix A
Correction value when the deadweight of the steel wire affects the camber (supplement)
Correction value when the deadweight of the steel wire affects the camber when measuring the camber is shown in Table A1. Table Al
Crane span
The spring balance tension is 150N during measurement.
The diameter of the steel wire is 0.49~0.52mm.
The actual camber value is obtained by subtracting the correction value from the reading on the steel ruler. Correction valueThe main information should be: a. Product model and name; b. Working level; d. Span; f. Crane operating speed; f. Factory number, manufacturing date and manufacturer name. 7.3 The packaging, transportation and storage of cranes shall comply with the relevant provisions of GB191 and (GB/T13384: 7.4 In order to prevent the main beam of the crane from deformation during lifting, transportation and storage, except for conditions that do not allow, it shall be lifted, transported and stored according to the use position.
7.5 The following materials shall be attached to the crane when it leaves the factory: a. Crane qualification manual;
b. Installation, use and maintenance instructions:
Packing list;
JB/T1306·94
Outsourced parts and equipment shall be accompanied by the manufacturer's factory qualification certificate. d.
8 Warranty period
The product shall be able to work normally within 12 months from the date of use, but not more than 18 months from the date of shipment, provided that the user properly keeps it, reasonably installs it and uses it correctly.
JB/T 1306-94
Appendix A
Correction value when the deadweight of the steel wire affects the camber (supplement)
Correction value when the deadweight of the steel wire affects the camber when measuring the camber is shown in Table A1. Table Al
Crane span
The spring balance tension is 150N during measurement.
The diameter of the steel wire is 0.49~0.52mm.
The actual camber value is obtained by subtracting the correction value from the reading on the steel ruler. Correction valueThe main information should be: a. Product model and name; b. Working level; d. Span; f. Crane operating speed; f. Factory number, manufacturing date and manufacturer name. 7.3 The packaging, transportation and storage of cranes shall comply with the relevant provisions of GB191 and (GB/T13384: 7.4 In order to prevent the main beam of the crane from deformation during lifting, transportation and storage, except for conditions that do not allow, it shall be lifted, transported and stored according to the use position.
7.5 The following materials shall be attached to the crane when it leaves the factory: a. Crane qualification manual;
b. Installation, use and maintenance instructions:
Packing list;
JB/T1306·94
Outsourced parts and equipment shall be accompanied by the manufacturer's factory qualification certificate. d.
8 Warranty period
The product shall be able to work normally within 12 months from the date of use, but not more than 18 months from the date of shipment, provided that the user properly keeps it, reasonably installs it and uses it correctly.
JB/T 1306-94
Appendix A
Correction value when the deadweight of the steel wire affects the camber (supplement)
Correction value when the deadweight of the steel wire affects the camber when measuring the camber is shown in Table A1. Table Al
Crane span
The spring balance tension is 150N during measurement.
The diameter of the steel wire is 0.49~0.52mm.
The actual camber value is obtained by subtracting the correction value from the reading on the steel ruler. Correction value
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