Some standard content:
Machinery Industry Standard of the People's Republic of China
Electric Hydraulic Block Brake
1 Subject Content and Scope of Application
Pusher
JB/T 6406.3 -92
This standard specifies the type, basic parameters, technical requirements, test methods and inspection rules of electric hydraulic pushers (hereinafter referred to as pushers) for crane brakes.
This standard is mainly applicable to pushers for crane brakes and also applies to pushers for other mechanical devices. 2 Reference standards
GBn193 General technical conditions for machinery, electrical engineering, instrumentation product packaging Basic technical requirements for rotating electrical machines
GB755
GB1031
GB1032
GB 1095
GB 1801
GR4208
GB4942
GB5171
GB6414
Surface roughness parameters and their values
three Test methods for phase asynchronous motors
Cross-sectional dimensions of flat key keys and keyways
Tolerance and matching size to 500mm hole, classification of shaft tolerance zone and matching shell protection level
Motor shell protection level
General technical conditions for small power motors
Dimensional tolerances of castings
GB/T 13384
General technical conditions for mechanical and electrical product packaging
3 types, basic parameters and Dimensions
3.1 Type
3.1.1 Type division
The pusher is divided into single push rod pusher and double push rod pusher according to its structure; it is divided into single push rod pusher and double push rod pusher according to its rated stroke. Short stroke and long stroke series. 3.1.2 Model representation method
YT
Special performance code (see Table 1)
rated stroke, mm
rated thrust, N
design Serial number (represented by numbers 1.2.3)
Structural form (single push rod is represented by "D", double push rod is not represented) Pusher
Ministry of Mechanical and Electronic Industry of the People's Republic of China 1992-07- 14 Approved for implementation on 1993-07-01
113
Code name
Name
Rising valve
3.1.3 Marking example
a.
h.
Drop valve
Mechanical
JB/T6406.3-
92
Table 1
Inductive type
Travel switch
Buffer spring loaded spring return spring heater "Shockproof and moisture-proof installation
Single push rod type, design number is 1, rated thrust is 300N, rated stroke is 50mm pusher: pusher YTD1-300/50
JB/T 6406.3
double push rod type, design number 2, rated thrust 1250N. Rated stroke 120mm, with load spring , Horizontally installed pusher:
Pusher YTz-1250/120-F.PJB/T6406.33.2 Basic parameters and dimensions
The basic parameters and dimensions of the pusher should comply with Figure 1 and Table 2 regulations, H
Single pushrod
a
Figure 1
Double pushrod
JB/T6406.3—92
09
09
090
821
B
8
C
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8
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09
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can skirt
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000
006
008
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01000
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(09/09t)
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4 Technical requirements
4.1
General requirements
JB /T6406.392 | .The motor should not be lower than JI51 in GB4942.1 (except fan cover).
4.1.3 The pusher motor is a three-phase asynchronous motor, and its insulation level should not be lower than F level. 4.2 Working conditions
4.2.1 The rated frequency of the propeller motor is 50Hz and the rated voltage is 380V (three-phase AC power supply). 4.2.2 The altitude where the propeller is used shall not exceed 1000m, otherwise the relevant regulations in GB755 shall be followed! 4.2.3 The surrounding ambient temperature of the propeller should be in the range of -25 ~ 45℃, and the relative air humidity should not be greater than 90%. 4.2.4 The working system of the propeller motor is continuous working system S1; intermittent periodic working system S3. Its load endurance rate is F.60% or F.40%.
4.2.5 The pusher should work in media without explosion hazard. And there should be no gas or conductive gas in the medium that can corrode metal or destroy insulation.
Note: If the working conditions in Article 4.2 are changed, the supply and demand parties must negotiate. 4.3 Performance
4.3.1 Under the conditions of rated frequency, rated voltage, rated load and vertical installation, the rated stroke of the propeller should comply with the provisions of Table 2, and the tolerance is ±3%.
4.3.2 Under the conditions of rated frequency, rated voltage, rated load, rated stroke and vertical installation, the operating frequency, rise and fall time of the thruster shall comply with the provisions in Table 2. The rise and fall times in Table 2 are measured data under thermal steady-state conditions. The recommended tolerance is 25%; see Appendix A (reference part) for the rise and fall times under cold conditions. 4.3.3 Under the conditions of rated frequency, rated voltage, rated stroke and vertical installation, the maximum thrust of the thruster shall be no less than 1.25 times of the rated thrust.
4.3.4 The service life of the propeller shall not be reduced by 3 million times under rated frequency, rated voltage, rated load and rated stroke. 4.3.5 When the pusher is installed at an angle of 15° relative to the vertical position, or when the motor terminal voltage of the pusher is reduced to 85% of the rated H, it should be able to reliably push the rated load to the rated stroke. 4.3.6 Under the rated frequency, rated voltage and rated load of the propeller motor, the deviation of any one phase current from the average phase current should not be greater than 15% of the average value of the three-phase current. 4.3.7 The insulation resistance of the stator winding of the propeller motor should not be less than 20MQ in the cold state and not less than 1MQ in the hot state. 4.3.8 The stator winding of the propeller motor should be able to withstand the test voltage of 1260V and still 1 minute withstand voltage test without flashover or breakdown.
4.3.9. After the pusher is filled with oil, it must run continuously for 16 hours. There must be no leakage or abnormal noise, and the piston rod must move flexibly. 4.3.10 All cylinder casting shells must undergo air pressure tests, and the test force should not be less than 5 times the design pressure of the working fluid. 4.4 Safety and health
4.4.1 The push rod of the pusher should be flexible in lifting and lowering, and the pusher should make no abnormal noise when running. 4.4.2 The secondary working fluid injected into the pusher must not contain impurities and water exceeding the corresponding standards. Appropriate oil should be used for different ambient temperatures. Under the specified working system, the temperature rise of the oil should not exceed 70K. 4.4.3 The pusher should be well sealed and no oil leakage should occur. 4.4.4 Each fastener of the pusher should have anti-loosening measures and anti-corrosion layers. 4.4.5 Under the specified working system, the temperature rise of the pusher motor shall not exceed the temperature rise limit value corresponding to the insulation level of the type in accordance with the provisions of (GB5171)
4.4.6 The lead of the pusher motor should be marked with phase sequence .There are grounding screws and obvious grounding marks. 116
4.5 Appearance requirements
JB/T 6406.3-92
4.5.1 The external surface of the pusher should have no obvious burrs or stickiness. 4.5.2 All parts made of ferrous metal, except for the mating surfaces, should have an anti-corrosion protective layer. 4.5.3 All painted surfaces should be uniform and there should be no obvious flow. Defects such as hanging, dividing, missing paint, wrinkles, and uneven colors. 4.6 Materials
The material strength value selected for the pusher parts should not be lower than the requirements in Table 3: Table 3
parts. Name
hydraulic cylinder
piston
piston rod
leaf
motor shaft
4.7 accuracy
material strength| |tt||N/mm
150
150
650
143
650
fine
degree| |tt||The inner diameter fit size tolerance is TT9. The surface roughness Ra=3.2μm. The outer diameter fit size tolerance is IT8. The surface roughness Ra=1.6um. The outer diameter fit size tolerance is IT8. The surface roughness Ra=1.6 μm. The bridge fit size tolerance is IT9, the keyway fit size tolerance is P9 or Js9, the outer diameter fit size tolerance is IT9. The keyway fit size tolerance is P9 or N9. Standard number
GB1801
GB1031||tt| |GB1801
GB1031
GB1801
GB1031
GB1801
GB1095
GB1801
GB1095
4.7 .1 The accuracy of the main parts of the pusher should not be lower than that specified in Table 3. 4.7.2 The dimensional tolerance of the castings should comply with CT14 in GB6414, and there should be no defects such as pores, trachoma, and slag inclusions that affect the performance. 4.7.3 All parts must be inspected and qualified, and purchased parts must have certificates of conformity before they can be customized. 5 Test methods
5.1 Test equipment and measuring tools
Test bench:
a .
Electric stopwatch or XY recorder;
Central,
Test magnetic code;
d． meter, ammeter, voltmeter, bridge, megger, etc.) and general measuring tools e.
5.2 Test conditions
5.2.1 Test instruments, meters and measuring tools must be verified by the calibration department. And within the validity period of qualification, all performance tests of the pusher in 5.2.2 shall be carried out after general inspection and oil filling. Outgoing inspection should be tested under thermal steady state conditions; type inspection should be tested after 16 hours of continuous operation. 5.3
·General inspection
-General inspection includes appearance, assembly and tightening condition, piston rod flexibility, connection size and sealing condition, etc. The inspection method is visual inspection and routine inspection||tt| |5.4 Performance Test
5.4.1 Rated stroke determination: Install the pusher on the test bench. The requirements shall comply with the provisions of Article 4.3.1. 5.4.2 Operation frequency measurement: According to the specified working system, the working cycle shown in Figure 2 is operated continuously for 1 hour. The requirements should comply with the provisions of Article 4.3.2 117
.
rising time
JB/T 6406.3-92
working eaves ring (cycle)
holding time
Figure 2
falling time
Intersong time
Time:
Note: (0-a) starting lag time; (ab) push rod lift time; (bd) hold time after push rod push up : (cd) Power-off lag time: (dc) Push rod return time: (ef) Push rod interval time.
- one working cycle ~ rising time, holding time, falling time and rest time. 5.4.3 Maximum thrust determination: Add a 1.25mm magnetic code with a weight greater than or equal to the rated thrust as a load on the push rod. The pusher should be able to reliably push up the load to complete its rated stroke. 5.4.4 Measurement of rising and falling time: Install the pusher vertically on the test bench, and measure its action time with an electric stopwatch or XY recorder according to the requirements of Article 4.3.2. The number of tests for each data should be many. Three times, take the average value as the actual measured value. The rising time is the sum of the starting lag time of the pusher when the power is turned on and the time for the push rod to complete the rated stroke and reach the end point: the falling time is the sum of the power-off lag action time of the push rod when the power is turned off and the time when the push rod completes the rated stroke and returns to the starting point. sum of time (see Figure 2).
5.4.5 Life test: Install the pusher on the matching standard brake frame, and install the brake frame on the test bench where the brake wheel is stationary (that is, the pusher only drives the brake when it is running) frame, while the brake wheel is stationary) as shown in Figure 3, according to the requirements of Article 4.3.4, with the specified working system and action frequency, the working cycle (cycle) shown in Figure 2 is operated continuously for 3 million times (one The work cycle is - once). Brake wheel
Pusher
Brake frame
Figure 3
During the test, use a point thermometer to measure: · motor and working oil every 4 hours The temperature of the liquid, monitor possible abnormal phenomena and record the test status at any time.
118
JB/T 6406.3--92
When the test reaches 500,000 times, 1,00j times, 1,500,000 times, 2 million times, and 3,000,000 times, respectively Determination of a rise time and fall time. After the test is completed, the pusher can continue to work only if it is qualified. 5.4.6 Temperature rise test: with rated load, conducted on the test stand of the life test. The temperature rise of the stator winding of the pusher motor is measured by the resistance method, and the temperature rise of the working fluid is measured by The overflow meter method is used to determine the protective performance test of the propeller shell in 5.4.7. It shall be carried out in accordance with the relevant provisions in Chapter 6 and Chapter 7 of GB4208. 5.4.8 The DC resistance, insulation resistance and withstand voltage test of the stator winding of the propeller motor shall be carried out according to the relevant provisions of GB1032. The temperature rise test of the propeller motor shall be carried out according to the provisions of Chapter 8 of GB1032. It may also be carried out together with the propeller according to 5.4. 6 entries go to line 5.4.9
.
5.4.10 Oil cylinder casting shell test: Place the shell into water for a pressure test. The pressure shall not be less than 5 times the design pressure of the working fluid. The test pressure shall be maintained for 5 minl. There shall be no Bubbles are generated, and the pressure indication value of the pressure gauge should remain unchanged during the pressure maintaining process. 6 Inspection Rules
6.1 Factory Inspection
6.1.1 Each spreader must be inspected by the quality inspection department before passing the inspection Before leaving the factory, the products must be accompanied by a product quality certificate. 6.1.2 The factory inspection items include:
a
In addition to the requirements of Article 5.3, the general inspection should also check the correctness of the motor wiring, signs and marks, and whether the injected working fluid is Meet the requirements;
b.
c.
d.
e.
f.
h.
Connection size inspection:
rated stroke measurement;
rise and fall time measurement;
maximum thrust measurement;
action frequency measurement;
DC resistance, Insulation resistance measurement
withstand voltage test.
Note: When the motor is equipped externally, the DC resistance and aldehyde voltage test do not need to be re-inspected. However, a certificate of conformity is required. 6.2 Type inspection
Type inspection shall be carried out when the following circumstances occur: a.
b.
Trial prototype identification of new products or old products transferred to factory production: When changes in design or process cause changes in certain performance parameters: it should be conducted at least once a year during normal production (life test every Once every 3 years); c.
d.
When production is resumed after a long-term suspension of production for more than ··years, type inspection 6.2.1
a.
b.
c.
d.
e.
Type inspection items include:
All items of factory inspection;
16h continuous operation inspection;
temperature rise test;
life test;
shell protection performance test, only performed when the product structure is finalized or when the structure and process have been significantly changed. For a series of products, representative specifications can be selected for testing.
6.2.2 Sample moving method
Products within 1 month after leaving the factory should be randomly selected at the production and sales unit or user location. When sampling, according to the order of production specifications, 1 type will be selected from every 3 types, and 1 type will be selected from the remaining less than 3 types, but no more than 3 specifications will be selected, and 3 units of each specification will be selected. If sampling is required at the production unit, the unit being inspected shall not be notified in advance. The inspected unit should provide all product specifications produced, and each specification should be no less than 3 units. During surprise inspection, the quantity is not limited
11
6.2.3 Judgment Rules
JB/T6406.392
If the inspection fails, the unqualified items shall be inspected Double the random inspection, if there are still unqualified ones, the product will be judged as unqualified. 7 marks, packaging, transportation, storage | As follows: 7.1.1
a.
b.
c.
d.
h.
Product name and model:
Rated voltage, rated frequency, rated current: rated thrust, rated stroke:
Motor insulation level, pusher protection level; working system;
Manufacturer name; ||tt| |Manufacturing date;
Factory number.
7.1.2 The sign material and the engraving method of the data on the sign and other marks should be able to ensure that the writing is clear and not easy to be erased during the entire period of use.
7.2 Packaging
7.2.1 The pusher should be cleaned before packaging, and its protective coating surface should be checked to see if it is intact. 7.2.2 The packaging box should be strong and reliable, and the domestic sales packaging box should comply with the regulations of GB/T13384. 7.2.3 The packaging of the vertebral actuator should have rain-proof measures. 7.2.4 The piston rod should be tightened in the starting position to prevent movement during transportation. 7.2.5 The random technical documents and spare parts are packed in plastic bags and fastened in the box. 7.2.6 Export packaging should comply with the regulations of GBn193. 7.3 Random technical documents
Random technical documents generally include:
certificate;
a.
b.
instruction manual;
c.
Packing list.
7.4 Packing box mark
Product name and model;
b.
Gross weight (kg);
c. Packing box corridor size: long × Width
7.5 Transportation and storage
7.5.1 It is strictly forbidden to invert or bump the factory products during transportation and hoisting. 7.5.2 The pusher should be ensured to be in an environment where there is no rain or snow, good air circulation, and no sunlight exposure. Stored in custody. 8Quality Guarantee
As long as the user abides by the rules of product storage and use, the product will not function normally due to poor manufacturing quality within 12 months from the month of shipment, or within 6 months from the date of arrival. During operation, the manufacturer shall repair or replace the product free of charge for the user. 120
JB/T 6406.3-92
Appendix A
The rise and fall time of the thruster in cold conditions (reference part)
A1 thruster in cold condition The recommended values ??of rise and fall times under normal conditions are as shown in Table Al: Table Al
Series
Short stroke series
Long stroke series
Specifications||tt| |220/50
300/50
(450/60)
500/60
800/60
(900/60)|| tt||1250/60
2000/60
3 000/60
500/120
800/120
1250/120||tt ||(1800/120)
2000/120
3000/120
Note: ①The specifications in brackets are the rising time of products that are not recommended
0. 4|| tt||0. 4
0.7
0.5
0.5
0.8
0.5
0. 5
. 6
. 8
0.8
0.8
1.0
1.0
1.1
The cold condition refers to the working fluid Temperature is +20 (Additional notes:
Falling time
0. 4
0. 4
(0. 4
0. 1|| tt||0. 1
0. 5
0.4
0. 4
(.
0.5
0.5||tt ||0.5
0.6
0.5
0.5
This standard was proposed and compiled by the Beijing Hoisting and Transport Machinery Research Institute of the Ministry of Mechanical and Electrical Industry. Brake Guang is responsible for drafting this standard. The main drafters are Chen Guangming, Gongzhiding, Li Xiangdong, Dong Gaoding, Gong Chenglan, and Dai Fucheng. Action frequency, times/h
Single push rod
1200||tt| |900
Double push
720
121
3. The packaging of the actuator should have rain-proof measures. 7.2.4 The piston rod should be tightened in the starting position to prevent movement during transportation. 7.2.5 The random technical documents and spare parts are packed in plastic bags and fastened in the box. 7.2.6 Export packaging should comply with the regulations of GBn193. 7.3 Random technical documents
Random technical documents generally include:
certificate;
a.
b.
instruction manual;
c.
Packing list.
7.4 Packing box mark
Product name and model;
b.
Gross weight (kg);
c. Packing box corridor size: long × Width
7.5 Transportation and Storage
7.5.1 It is strictly forbidden to invert or bump the factory products during transportation and hoisting. 7.5.2 The pusher should be ensured to be in an environment where there is no rain or snow, good air circulation, and no sunlight exposure. Stored in custody. 8Quality Guarantee
As long as the user abides by the rules of product storage and use, the product will not function normally due to poor manufacturing quality within 12 months from the month of shipment, or within 6 months from the date of arrival. During operation, the manufacturer shall repair or replace the product free of charge for the user. 120
JB/T 6406.3-92
Appendix A
The rise and fall time of the thruster in cold conditions (reference part)
A1 thruster in cold condition The recommended values ??of rise and fall times under normal conditions are as shown in Table Al: Table Al
Series
Short stroke series
Long stroke series
Specifications||tt| |220/50
300/50
(450/60)
500/60
800/60
(900/60)|| tt||1250/60
2000/60
3 000/60
500/120
800/120
1250/120||tt ||(1800/120)
2000/120
3000/120
Note: ①The specifications in brackets are the rising time of products that are not recommended
0. 4|| tt||0. 4
0.7
0.5
0.5
0.8
0.5
0. 5
. 6
. 8
0.8
0.8
1.0
1.0
1.1
The cold condition refers to the working fluid Temperature is +20 (Additional notes:
fall time
0. 4
0. 4
(0. 4
0. 1|| tt||0. 1
0. 5
0.4
0. 4
(.
0.5
0.5||tt ||0.5
0.6
0.5
0.5
This standard was proposed and compiled by the Beijing Hoisting and Transport Machinery Research Institute of the Ministry of Mechanical and Electrical Industry. Brake Guang is responsible for drafting this standard. The main drafters are Chen Guangming, Gongzhiding, Li Xiangdong, Dong Gaoding, Gong Chenglan, and Dai Fucheng. Action frequency, times/h
Single push rod
1200||tt| |900
Double push
720
121
3. The packaging of the actuator should have rain-proof measures. 7.2.4 The piston rod should be tightened in the starting position to prevent movement during transportation. 7.2.5 The random technical documents and spare parts are packed in plastic bags and fastened in the box. 7.2.6 Export packaging should comply with the regulations of GBn193. 7.3 Random technical documents
Random technical documents generally include:
certificate;
a.
b.
instruction manual;
c.
Packing list.
7.4 Packing box mark
Product name and model;
b.
Gross weight (kg);
c. Packing box corridor size: long × Width
7.5 Transportation and storage
7.5.1 It is strictly forbidden to invert or bump the factory products during transportation and hoisting. 7.5.2 The pusher should be ensured to be in an environment where there is no rain or snow, good air circulation, and no sunlight exposure. Stored in custody. 8Quality Guarantee
As long as the user abides by the rules of product storage and use, the product will not function normally due to poor manufacturing quality within 12 months from the month of shipment, or within 6 months from the date of arrival. During operation, the manufacturer shall repair or replace the product free of charge for the user. 120
JB/T 6406.3-92
Appendix A
The rise and fall time of the thruster in cold conditions (reference part)
A1 thruster in cold condition The recommended values ??of rise and fall times under normal conditions are as shown in Table Al: Table Al
Series
Short stroke series
Long stroke series
Specifications||tt| |220/50
300/50
(450/60)
500/60
800/60
(900/60)|| tt||1250/60
2000/60
3 000/60
500/120
800/120
1250/120||tt ||(1800/120)
2000/120
3000/120
Note: ①The specifications in brackets are the rising time of products that are not recommended
0. 4|| tt||0. 4
0.7
0.5
0.5
0.8
0.5
0. 5
. 6
. 8
0.8
0.8
1.0
1.0
1.1
The cold condition refers to the working fluid Temperature is +20 (Additional notes:
fall time
0. 4
0. 4
(0. 4
0. 1|| tt||0. 1
0. 5
0.4
0. 4
(.
0.5
0.5||tt ||0.5
0.6
0.5
0.5
This standard was proposed and compiled by the Beijing Hoisting and Transport Machinery Research Institute of the Ministry of Mechanical and Electrical Industry. Brake Guang is responsible for drafting this standard. The main drafters are Chen Guangming, Gongzhiding, Li Xiangdong, Dong Gaoding, Gong Chenglan, and Dai Fucheng. Action frequency, times/h
Single push rod
1200||tt| |900
Double push
720
121
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