Some standard content:
JB/T10163-1999
This standard specifies the relevant contents of dry multi-plate electromagnetic clutches. In terms of product type, parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage, it is consistent with the current national standards and industry standards, and makes them more detailed, more specific and more operational.
This standard is proposed and managed by Chengdu Machine Tool Electrical Research Institute. The drafting unit of this standard: Shanghai Third Machine Tool Electrical Factory. 163
1 Scope
Machinery Industry Standards of the People's Republic of China
Dry Multi-plate Electromagnetic Clutch
JB/T10163
This standard specifies the type, parameters, technical requirements, test methods and inspection rules of dry multi-plate electromagnetic clutches. This standard is applicable to dry multi-plate electromagnetic clutches (hereinafter referred to as clutches) in mechanical transmissions that combine or separate the driven part with the active part when the active part is running. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard by being referenced in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T2423.4—1993 Basic environmental test procedures for electrical and electronic products Test Db: Alternating damp heat test method GB/T2828--1987 Batch inspection counting sampling procedures and sampling tables (applicable to continuous batch inspection) GB/T2900.18--1992 Electrical terminology low-voltage electrical appliances GB/T4207-1984 Determination method of comparative tracking index and proof tracking index of solid insulating materials under humid conditions GB/T14048.1--1993 General provisions for low-voltage switchgear and control equipment JB/T1648-1999 Wet multi-plate electromagnetic clutch 3 Definitions
This standard adopts the following definitions.
3.1 Dry multi-plate electromagnetic clutch
A clutch composed of an electromagnetic system and friction plates and working under dry friction conditions. 3.2 Terms not specified in this standard shall be in accordance with the relevant provisions of GB/T2900.18 and JB/T1648. 4 Classification and naming
4.1 Structural type
The clutch is a dry type, multi-plate, magnetic flux-free structure, and the clutch works without lubricating oil. When the clutch is energized, it transmits torque. After power is off, the transmission of torque is terminated.
4.2 Classification
According to the rated torque, it is divided into: 25, 50, 100, 160, 250, 400N·m. 4.3 Naming
Approved by the State Machinery Industry Bureau on October 8, 1999 164
Implementation on March 1, 2000
4.4 Parameters
JB/T10163-1999
Specification code
Design code
Friction plate
Electromagnetic clutch
The main parameter of the clutch is the rated torque. Its main parameters and basic parameters are shown in Table 1. Table 1 Clutch parameters
Rated torque, N·m
No-load torque, N·m
On time, s
Off time+s
Rated working voltage, DC.V
Rated insulation voltage, AC.VbzxZ.net
Maximum allowable working speed, r/min
5 Requirements
5.1 Normal working conditions and installation conditions
5.1.1 Ambient air temperature
a) The upper limit of the ambient air temperature shall not exceed +40℃; 5
b) The 24h average value of the ambient air temperature shall not exceed +35C; c) The lower limit of the ambient air temperature shall not be lower than -5℃. 5.1.2 Altitude
The altitude of the clutch installation site shall not exceed 2000m. 10
≥160
：400
Note: When the clutch is used at a higher altitude, the reduction in the electrical insulation strength of the air and the decrease in the cooling effect of the air should be considered. Therefore, the user should consult with the manufacturer. 5.1.3 Atmospheric conditions
The relative humidity of the atmosphere shall not be less than 50% when the ambient air temperature is +40℃. It can have a higher relative humidity at a lower temperature. The average maximum relative humidity of the wettest month is 90%, and the average minimum temperature of the month is +25℃. Condensation on the product surface due to temperature changes should also be taken into account.
5.1.4 Pollution level
The pollution level of the local micro-environment around the clutch is level 3. 5.1.5 Installation category
The installation category (overvoltage category) of the clutch is Class II. 5.1.6 Installation conditions
When the clutch shaft is installed horizontally and the active and driven sides of the installation shaft are two butt-jointed shafts, the coaxiality tolerance is level 8. Note: When the clutch is used in abnormal working conditions and installation conditions, it should be designed and used according to the agreement between the supplier and the demander 165
5.2 Structural requirements
5.2.1 Electrical clearance
The minimum electrical clearance of the clutch is 0.8mm. 5.2.2 Creepage distance
JB/T 10163
The minimum creepage distance of the clutch shall comply with the provisions of Table 2. 1999
Table 2 Minimum creepage distance
Rated insulation voltage U
Regarding the classification of insulating material groups, they can be divided into the following four groups according to their comparative tracking index CII values: Insulating material group I: 600≤CT1
Insulating material group II: 400≤CT1600
Insulating Material group ma: 175cTI400
Insulating material group b: 100≤CTI<175
5.3 Performance requirements
5.3.1 General requirements
5.3.1.1 The surface of the clutch plastic parts should be smooth and flat, without protrusions and cracks. mm
5.3.1.2 The assembly quality of the clutch should comply with the requirements of the drawings and relevant documents. Screws and other fasteners are firmly connected. , no looseness is allowed 5.3.1.3 When the clutch pull-in voltage is 75% of the rated working voltage, it should move flexibly. 5.3.2 Parameter requirements
The clutch parameters should comply with the requirements of Table 1 under the specified test conditions (see 6.3). 5.3.3 Dielectric properties
The clutch should be able to withstand the T. frequency withstand test of AC 50Hz1000V for 1min without breakdown or flashover. 5.3.4 Temperature rise
When the working voltage is applied to the clutch coil, its stable temperature rise value shall not exceed the temperature rise limit listed in Table 3. Table 3 Limit temperature rise of coil
5.3.5 Moisture and heat resistance
Insulation grade of materials
5.3.5.1 The clutch should have the ability to adapt to the condensation heat environment. Carry out the alternating damp heat test according to the method specified in GB/T2423.4. The severity level of the test is the highest temperature value + 40℃, and the test cycle is 6d. 5.3.5.2 Measure in the last 1-2 hours of the "low overflow and high humidity" stage. At this time, the temperature in the test box (room) is 25°C ± 3°C. The relative humidity should be controlled within the range of 95%-98% to avoid condensation on the product and affect the test results. Measure the insulation resistance first, and its resistance value should not be less than 166
JB/T 10163—1999
1MQ, and then conduct a 1min power frequency withstand test, the focal test voltage is 80% of the value specified in 5.3.3. 5.3.6 Low temperature environment adaptability
The clutch should be adapted to transportation and storage under low temperature conditions, and can withstand a 25 (low temperature storage test. After the test, the plastic parts shall not have any cracking or cracking.
5.3.7 Component requirements
All components made of ferrous metal in the clutch, except the working pole surface and friction surface of the magnetic circuit, must have anti-corrosion measures. 6 Test methods
6.1 Basic requirements
6.1.1 The tested clutch shall comply with the requirements of the drawings and technical documents approved by the prescribed procedures. 6. 1.2 Each test or each complete sequence test shall be carried out on a new and clean product. Replacement of parts or repairs are not allowed during the test.
6.1.3 The test power supply is a three-phase full-wave rectified power supply. The test voltage value is allowed to be 5%. 6.1.4 In addition to the provisions of this standard, the test methods of the clutch shall be carried out in accordance with the relevant provisions of GB/T14048.1. 6.2-General inspection
6.2.1 Visually inspect the clutch markings, parts, anti-corrosion measures, packaging, plastic parts, etc. Surface quality. 6.2.2 The assembly quality, overall dimensions and installation dimensions, electrical clearance and creepage distance of the clutch shall be inspected with calipers, micrometers or special tools, measuring tools and instruments.
6.2.3 Determination of the comparative tracking index (TI value of insulating materials. The maximum voltage value (expressed in V) when no leakage trace appears after 50 drops of standard electrolyte (ammonium chloride) on the insulating material sample is the CTI value of the insulating material. The test method of CTI value is shown in GB/T4207. 6.2.4 At room temperature, the clutch is subjected to 75% of the rated working voltage and energized six times. Visual inspection shows that the movable parts such as the friction plate and the armature should be able to move flexibly.
6.3 Parameter determination
6.3.1 Test conditions
6.3.1.1 The clutch shaft star is installed horizontally.
6.3.1.2 The coaxiality and verticality tolerances of the active and driven sides of the clutch installed on the test bench are 8 levels . The working clearance of the clutch is adjusted to the specified range.
6.3.1.3 Test current
The current value when the clutch is under the rated working voltage and the coil temperature is +80C. 6.3.2 Torque test
The torque of the clutch is measured when there is relative sliding between the inner and outer friction plates. The measured stable value should not be less than the provisions in Table 1. 6.3.3 On-time and off-time test
The on-time and off-time of the clutch are measured on the measured torque curve. The three average values should comply with the provisions in Table 1. The torque curve of the clutch is measured when there is relative sliding between the inner and outer friction plates. When the relative sliding speed constant value test is adopted, the average speed should be between 0.5 and 2 m/s range. 6.3.3.1 Connection time
The connection time of the clutch is the time from the start of power-on of the excitation coil to the time when the torque rises to 90% of the rated torque under the test conditions specified in 6.3.3. The connection time shall comply with the provisions of Table 1. 6.3.3.2 Disconnection time
The disconnection time of the clutch is the time from the start of power-off of the excitation coil to the time when the residual force drops to 10% of the rated torque under the test conditions specified in 6.3.3. The disconnection time shall comply with the provisions of Table 1. 6.3.4 No-load torque test
The no-load torque test is measured when the clutch is not powered and the relative speed of the inner and outer friction plates is not less than 1000r/mi. The stable value of the no-load torque shall comply with the provisions of Table 1. 6.4 Dielectric property test
JB/T10163·--1999
6.4.1 The basic conditions for the power frequency withstand voltage test of the clutch shall be as specified in 8.2.3.4.3 of GB/T14048.1·1993. 6.4.2 The waveform of the test power supply voltage shall be as specified in 8.2.2.2.2 of GB/T14048.11993. 6.4.3 The power frequency withstand voltage test is applied between the coil and the yoke. 6.4.4 During the 1-minute power frequency withstand voltage test, if there is no breakdown or flashover of the clutch, it is considered qualified. 6.5 Temperature rise test
6.5.1 Temperature rise test conditions
6.5.1.1 The measurement of the ambient air temperature shall be carried out in accordance with 8.2.3.3.1 of GB/T14048.1--1993. The temperature rise test is carried out in the range of ambient air temperature +10~+40℃. The ambient air temperature change during the test does not exceed 10K. 6.5.1.2 The clutch temperature rise test should be carried out after the clutch is installed on the shaft and the shaft is fixed horizontally with a non-heat-conducting bracket. The length of the shaft is 3 times the clutch.
6.5.2 The clutch temperature rise is carried out in accordance with 8.2.3.3.2 and 8.2.3.3.6 of GB/T14048.1--1993. The coil temperature rise measured by the resistance method should not exceed the provisions of Table 3.
6.6 Moisture and heat resistance test
In order to verify the heat and humidity resistance performance in 5.3.5, the alternating moisture and heat test can be carried out in accordance with the method specified in GB/T2423.4. After the test, check the flexibility of the armature action (according to 6.2.4 of this standard). 6.7 Low humidity storage test
The clutch test sample is stored in a low temperature box, and the temperature is reduced at a rate of not less than 1℃/min. After the temperature in the box reaches -25℃ (the difference between the temperature of all parts of the test sample and the specified low temperature value is within ±3℃), the low temperature test is continued for 16 hours, and then the test sample is restored under normal atmospheric pressure conditions (temperature +15～+35℃, relative humidity 45%～75%, air pressure 86~~106kPa). The recovery time must be sufficient to reach the stable temperature at room temperature.
7 Inspection rules
7.1 Classification of inspection and test
The inspection and test of the clutch are divided into the following categories: a) Type test;
b) Periodic test;
c) Factory test:
1) Routine test;
2) Factory sampling test.
7.2 Type test
The purpose of type test is to verify whether the design and performance of the clutch meet the requirements of this standard. Type test is a test that must be carried out by new product development units or re-trial production units. Usually, type test only needs to be carried out once. When changes in product design, process, material and structure may affect its working performance, it is necessary to re-carry out type test of all or related items.
7.2.1 Type test items and sequence shall be in accordance with the provisions of Table 4. 168
General inspection
JB/T10163-1999
Table 4 Type test, periodic test items and sequence test content
Test items
a. Determination of comparative tracking index (CTI) value of insulating materials
b. Electrical clearance and creepage distance
c. Marking and packaging
d. Assembly quality
e. Plastic parts
f. Flexibility of movement
Requirements for components
Power frequency withstand voltage test
Parameter measurement
a. Dynamic torque
b. Make-up time and break-off time
c. No-load torque
Temperature rise test
Moisture and heat resistance test
Low-temperature storage test
Note: In order to shorten the test cycle, single item verification is allowed. 7.2.2 Type test rules
5.2.1,5.2.2
Test methods
Test sequence
Type test
Periodic test
The clutch to be type tested must be a formal trial product. Each test item (or test sequence) should be no less than two units. All the specified type test items should be qualified before the clutch type test is considered qualified. Only products that have passed the type test can be submitted for appraisal. 7.2.3 Type test results and evaluation
If there are errors in the items that do not pose a threat to safety or seriously reduce performance indicators during the type test, as long as the manufacturer can provide sufficient evidence to show that the error is not an inherent defect in the design, but is caused by defects in individual test products, it is allowed to retest according to the original number of test products, and the type test is still considered qualified if the retest is qualified.
7.3 Periodic test
After the product type test is qualified and it enters the stable production stage, a periodic test is carried out to check the stability of product quality. The periodic test of the clutch should be carried out every 5 years. 7.3.1 The periodic test items and sequence should be in accordance with the provisions of Table 4. 7.3.2 The clutches for periodic test must be randomly selected from the batch of products that have passed the factory test. Each test item (or test sequence) should be no less than two units, and all the specified test items must be qualified. If only one item fails in the test, the item is allowed to be retested according to the original sampling quantity. If all the retest results are qualified, the periodic test can be considered to be qualified; if one item fails again in the retest, the periodic test is considered to be unqualified.
7.4 Factory test
7.4.1 Conventional test
Routine test is the test and inspection that the manufacturer must carry out on each clutch before it leaves the factory. Its purpose is to check for defects in materials, processes and assembly.
JB/T10163-1999
See Table 5 for routine test items and test methods. Table 5 Routine test items and test methods
Routine test items
a. Marking, packaging
b. Assembly quality
c. Plastic parts
d. Movement flexibility
c. Component requirements
f. Power frequency withstand voltage test
7.4.1.2 Routine test rules
5. 3. 1.1
Test method
Products that fail the routine test must be returned for repair until they are fully qualified. If they cannot be repaired, they should be scrapped. 7.4.2 Factory sampling test
The manufacturer must conduct a sampling test before each batch of products leaves Guangdong, and the sampling plan must comply with GB/T2828.7.4.2.1 Factory sampling test items
a) Check the clutch torque:
b) Check the clutch's overall dimensions and installation dimensions; c) Check the clutch's flexibility.
7.4.2.2 Factory sampling inspection
Before each batch of clutches leaves the factory, samples specified in Table 6 shall be randomly selected for inspection. If the number of unqualified units is equal to or less than A.1, the batch of products shall be considered qualified; if the number of unqualified units is equal to or greater than Rel, it shall be considered unqualified; if the number of unqualified units is greater than A.1. and less than Re1, nz (=nt) samples shall be selected for inspection. If the total number of unqualified units in the two previous and subsequent inspections is equal to or less than A2, the batch of products shall be considered qualified; if the total number of unqualified units is equal to or greater than Rl, the batch of products shall be considered unqualified. Table 6 Sampling plan
Batch range
51~~150
151~280
281~500
501～1200
1 201~3 200
3201~~10000
7.5 User inspection
The user has the right to inspect whether the performance indicators of the clutch meet the requirements of the standard. 8 Marking, labeling and instruction manual
8.1 Marking
8.1.1 The marking of each clutch shall be easily visible, clear and durable, and shall not be set on removable parts. The content of the mark includes: a) manufacturer's name or trademark;
b) product model and (or) name;
G) rated voltage:
d) year and month of production or factory number;
e) product standard number implemented.
JB/T10163-1999
8.1.2 The packaging box of the clutch should be marked clearly and neatly, and it should not be blurred due to long-term transportation or storage. The content of the mark includes: a) manufacturer's name or trademark;
b) product model, name, specification and quantity; c) name and address of the consignee;
d) gross weight of the packaging box and net weight of the product, kg; e) maximum external dimensions of the packaging box (length × width × height); f) position mark "upward" and precautions such as "afraid of moisture", "afraid of moisture", "handle with care" and other words or warning signs; g) product standard number implemented.
8.1.3 The manufacturer shall provide the product manual. The contents of the product manual include: a) product name and model;
b) the number of the standard implemented by this product;
c) rated working voltage;
d) rated insulation voltage;
e) normal working conditions;
f) structure and action principle;
g) main performance parameters of the product;
h) overall dimensions and installation dimensions;
i) installation, use, operation and maintenance requirements and precautions; j) ordering instructions.
9 Packaging, transportation and storage
9.1 Each clutch shall be accompanied by a product certificate and packed in a packaging box. 9.2 The clutch shall be packed before leaving the factory, and the packaging box must be able to prevent it from being damaged during transportation. 9.3 The packaging box shall contain a packing list and a manual. 9.4 The gross weight of the clutch packaging box shall generally not exceed 50kg. 9.5 Transportation and storage
The clutch should be transported and stored in an environment without rain or snow, with good air circulation, relative humidity not exceeding 95% (+25°C), and temperature between -25°C and +40°C.
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