Some standard content:
JB/T 9008.3-1999
This standard is a revision of ZBJ80013.3--89 "Conical rotor motor for wire rope electric hoist". During the revision, only editorial changes were made to the original standard, and the main technical content remained unchanged. This standard is part of the JB/T9008 "Wire Rope Electric Hoist" series of standards, which includes the following six parts: JB/T 9008.1--1999
Wire Rope Electric Hoist
Types and basic parameters
JB/T9008.2-1999
Technical conditions for wire rope electric hoist
JB/T9008.3--1999 Conical rotor motor for wire rope electric hoistJB/T9008.4-1999 Test methods for wire rope electric hoist Main circuit limiter
JB/T 9008.5--1999
Wire Rope Electric Hoist
JB/T9008.6--1999 Acceptance Technical Conditions for Electrical Control Equipment of Wire Rope Electric Hoist This standard replaces ZBJ80013.3-89 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Hoisting Machinery. The responsible drafting unit of this standard: Tianjin Hoisting Equipment Co., Ltd. The main drafters of this standard: Shi Xuezheng, Zhou Yaohua, Lu Xuexi, Li Daozhong, Cui Zhenyuan, Li Enbo. 211
1 Scope
Machinery Industry Standard of the People's Republic of China
Tapered rotor motor for electric wire rope hoists
Tapered rotor motor for electric wire rope hoistsJB/T9008.3-1999
Replaces ZBJ80013.3-89
This standard specifies the type, basic parameters, technical requirements, test methods, inspection rules and packaging requirements of tapered rotor motors (hereinafter referred to as motors) for electric wire rope hoists. This standard applies to single-speed and double-winding pole-changing tapered rotor motors for electric hoists, as well as double motor units consisting of two tapered rotor motors.
2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB191-1990 Pictorial symbols for packaging, storage and transportation
GB/T 7551987bzxZ.net
GB/T 997—1981
GB/T 1032—1985
GB/T 1184--1996
GB/T 1993-1993
Basic technical requirements for rotating electrical machines
Motor structure installation type and code
Test methods for three-phase asynchronous motors
Shape and position tolerances without tolerance values
Cooling methods for rotating electrical machines
GB/T 4942.1—1985
Motor housing protection classification
GB/T 13306-1991
GB/T 13384—1992
JB/T 9008. 2--1999
JB/T 9008.4-1999
3 Types and basic parameters
3.1 Type
General technical conditions for packaging of electromechanical products
Wire rope electric hoist
Wire rope electric hoist
The motor is divided into the following four types according to its use: a) single-speed or double-speed lifting motor;
b) high-speed lifting motor;
c) single-speed or double-speed running motor;
d) double motor unit.
3.1.1 Model indication method
Approved by the State Machinery Industry Bureau on June 28, 1999 212
Technical conditions
Test method
Implemented on January 1, 2000
JB/T9008.3—1999
Number of slow poles
Number of fast poles
Core length
(Digital indication, no indication when there is only one length)Frame number
(S .Short machine base; M: medium machine base, L: long machine base) center height, mm;
Equipped machine model (digital representation)
Lifting (no representation)
Running (Y)
Slow speed (M)
Dual motor unit (S)
Conical motor for electric hoist
1For dual motor units, the power (kW) of fast and slow motors are used to represent the center height, machine base number and core length respectively (as shown in the last row of Table 1).
2The machine model to be matched needs to be applied to the professional technical centralized office and can only be used after approval. 3.1.2 Marking example
a) Model number 1, center height 112mm, machine base number M, fast pole number 2 poles, slow pole number 12 poles for lifting motor: Motor YHZ,112M-2/12 JB/T9008.3—1999b) Single-speed running motor with model number 1, center height 100mm, frame number S, core length 1 and 2 poles: motor YHZY,100S1-2JB/T9008.3—1999c) Model number 1, fast motor power 24kW, 4 poles, slow motor power 2kW, 2 poles, dual motor unit:
Dual motor unit YH2S24/2-4/2JB/T9008.3—19993.1.3 Structure and installation type of motor
The installation type of lifting and running motors shall comply with IMB5 or IMB14 in GB/T997. 3.1.4 The protection grade of the motor casing shall comply with IP54 in GB/T4942.1 (except fan cover and brake seat). 3.1.5 The cooling method of the motor shall comply with ICO141 or ICO041 in GB/T1993. 3.2 Basic parameters
3.2.1 The working system of the motor is S4 as specified in GB/T755. The reference duty cycle of the single-speed lifting motor is FC=40%, and the equivalent number of starts is 240 times/h; the reference duty cycle of the double-speed lifting motor is preferably FC=40%/20%, and the equivalent number of starts is preferably (240 times/240 times)/h; the reference duty cycle of the slow-speed lifting motor in the double-motor group is FC=20%, and the equivalent number of starts is preferably 240 times/h; the reference duty cycle of the single-speed running motor is preferably FC=60%, and the equivalent number of starts is preferably 240 times/h; the reference duty cycle of the double-speed running motor is preferably FC=40%/20%, and the equivalent number of starts is (240 times/120 times)/h. 3.2.2 The rated frequency of the motor is 50Hz and the rated voltage is 380V. 3.2.3 The rated power and synchronous speed of the motor in the reference working system should be selected according to Table 1. 213
Synchronous speed
Motor model
YHZY,90S-2
YHZY190S-4
YHZY,100S1-2
YHZY,100S1-4
YHZY.100S2-2
YHZY:100S2-4
YH Z,100S-2
YHZ,112S-2
YHZ,125S-2
YHZ1140S-2
YHZ,160S-2
YHZ,200S-2
YHZ,200L-4
YHZY,90M-2/8
YHZY,100 M-2/8
YHZY1100L-2/8
YHZ,100M-2/12
YHZ112M-2/12
YHZ,125M-2/12
YHZ,140M-2/12
|YHZ,200M-2/1 2
YHZS,24/2-4/2
JB/T9008.3—1999
3000/750
rate/kw
0.88/0.21
1.45/0.32
3.000/500
1.25/ 0.21
1500/3 000
3.2.4 When the working level of the electric hoist changes, the corresponding power value of its motor shall be determined according to the principle of the temperature rise allowed under the rated power during the basic working system.
3.2.5 The guaranteed value of the moment of inertia Jm of the lifting motor rotor (including the fan brake wheel) shall meet the design requirements, and its tolerance shall be +10% of the guaranteed value.
3.2.6 The installation dimensions and tolerances of the motor and the overall dimensions shall all meet the design requirements of the product. Technical requirements
4.1 When the motor is used under the following working conditions, it shall be able to ensure normal operation. 4.1.1 The altitude of the place of use shall not exceed 1000m; if the motor is specified to be used at an altitude of more than 1000mm, it shall comply with the corresponding provisions of GB/T755.
4.1.2 The ambient air temperature of the place of use varies with the seasons and generally does not exceed 40C. When the motor is specified to be used at an ambient air temperature higher than 40C, it shall comply with the corresponding provisions of GB/T755. 214
4.1.3 Frequent starting, braking and reversing. 4.1.4 Frequent mechanical vibration and shock.
JB/T 9008.3-1999
4.2 When the motor is in normal operation, the output power can still maintain the rated value when the deviation between the power supply voltage (rated frequency) and the rated value does not exceed ±5%. When the voltage deviates from the rated value, the performance of the motor is allowed to be different from the provisions of the standard, and the temperature rise of its winding is allowed to be 10K higher than the prescribed value. When the deviation between the frequency (rated voltage) and the rated value does not exceed ±1%, the output power can still maintain a constant value. When the voltage and frequency deviate at the same time, the deviations of the two shall not exceed 5% and ±1% respectively. If both deviations are positive, their sum shall not exceed 6%; when both deviations are negative or positive and negative respectively, and the sum of their absolute values does not exceed 5%, the motor output power can still maintain the rated value, and the temperature rise of the motor winding is allowed to be 10K higher than the prescribed value. 4.3 The motor adopts F-class insulation. When the altitude and ambient air temperature meet the requirements of 4.1.1 and 4.1.2, the motor winding temperature rise (resistance method) should not exceed 100K, and the bearing allowable temperature (thermometer method) should not exceed 95C. Note: If the altitude or ambient air temperature of the test site is different from that specified in 4.1.1 and 4.1.2, the temperature rise limit should be corrected according to the provisions of GB/T755. The bearing allowable temperature refers to the value at the ambient air temperature specified in 4.1.2. When measured at an ambient air temperature lower than the specified ambient air temperature, the bearing temperature should be the difference between the measured temperature plus the specified ambient air temperature and the actual ambient temperature. 4.4 When the electric hoist lifts the rated load, when the terminal voltage of the motor is 85% of the rated voltage, it must ensure that all mechanisms can work normally and have residual magnetic pull.
4.51 model motor at the reference power and rated voltage, the ratio of the maximum torque and the stall torque to the rated torque and the guaranteed value of the stall current shall comply with the provisions of Table 2 (other models can also refer to it). Table 2
Motor model
YHZY,90S-2
YHZY,90S-4
YHZY.100S1-2
YHZY1100S1-4
YHZY,100S2-2
YHZY,100S2-4
YHZ.100S-2
YHZ,112 S-2
YHZ, 125S-2
t||YHZY,100L-2/8
YH Z:100M-2/12
YHZ,112M-2/12
0.88/0.21
1.45/0.32
1.25/0.21
Maximum torque
Stalling torque
Rated torque
Stalling current
Motor model
YHZ,125M-2/12|| tt||YHZ,140M-2/12
YHZ,160M-2/12
YHZ,200M-2/12
YHZS,24/2-4/2
JB/T9008.3—1999
Table 2 (End)
Maximum torque
4.6 The tolerance of the guaranteed value of the electrical performance of the motor shall comply with the provisions of Table 3. Table 3
Stalled-rotor current
Stalled-rotor torque
Maximum torque
Stalled-rotor torque
Guaranteed value +20%
Guaranteed value -10%
Guaranteed value -10%
Stalled-rotor current
110/25
190/30
320/30
4.7 When the three-phase power supply is balanced, the deviation of any phase of the three-phase no-load current of the motor from the three-phase average value shall not exceed 10% of the three-phase average value.
4.8 The insulation resistance of the motor stator winding shall not be less than 0.38Mα2 in the hot state or after the temperature rise test. 4.9 The stator winding of the motor shall be able to withstand a withstand voltage test of 1 min without breakdown. The frequency of the test voltage is 50 Hz and it shall be a sine wave as much as possible. For motors with rated power less than 1kW, the effective voltage is 1260V, and for motors with rated power greater than or equal to 1kW, the effective voltage is 1760V. 4.10 The stator winding of the motor shall be able to withstand a short-term voltage increase test without breakdown of the inter-turn insulation. The test shall be carried out when the motor is unloaded, and the applied voltage of the test shall be 130% of the rated voltage for 3 minutes. For motors with no-load current exceeding the rated current, the test time may be shortened to 1 minute. When the voltage value is increased to 130% of the rated voltage, the frequency or speed may be increased at the same time, but it shall not exceed 115% of its rated value.
4.11 The motor shall be able to withstand the guaranteed value of the maximum torque (allowing tolerance) for 15 seconds without sudden speed changes, stalling, or harmful deformation in the hot state and with gradually increasing torque. At this time, the voltage and frequency shall be able to maintain their rated values. 4.12 The maximum speed allowed for the motor: 1.5 times the synchronous speed for a 2-pole motor; 2 times the synchronous speed for a 4-pole motor. When the motor is unloaded, it should be able to withstand an overspeed test of 120% of the maximum speed, and the rotor should not have any harmful deformation after 1 minute. 4.13 In order to ensure that the motor is not damaged due to thermal overload, the end of the lifting motor winding should be buried in a thermal control element, and the operating temperature of the thermal control element is 170C+10℃ (160C±10℃ can also be selected). 4.14 The rotor and fan wheel should be dynamically balanced, and the accuracy level is G6.3. 4.15 The motor should ensure the air gap specified in the design, and its air gap deviation is ±0.28. 4.16 The lead wire of the motor should have a phase sequence mark. There should be a grounding screw in the junction box of the motor, and a grounding mark should be set near the grounding screw. This mark should ensure that it is always clear during the service life of the motor. 4.17 The circular runout of the outer circle of the midpoint of the spline joint part of the shaft extension when the shaft rotates should not be greater than the 9th level specified in GB/T1184. When the shaft extension is a shaft gear, the gear accuracy level should comply with the provisions of JB/T9008.2. 4.18 The noise value of the A-weighted sound power level measured when the motor is unloaded shall not exceed the limit specified in Table 4. 216
>1. 1~2. 2
>2. 2~5. 5
>5. 5～11
>11～22
JB/T 9008.3—1999
4.19 The braking of the motor shall be smooth and reliable. The guaranteed value of the static braking torque of the hoisting motor shall meet the requirements of the performance of the whole machine, and its value shall not be less than 2.5 times the static load torque on the motor shaft. The assembly of the brake wheel shall ensure that the axial play of the motor during starting and braking is between 1 and 1.5 mm, and ensure that the brake ring does not rub against the brake surface during operation. Note: The static load torque value is caused by the rated load of the base model of the motor and is converted to the rated static load torque on the motor shaft. This data should be provided when applying for the model number of the motor.
Each fastening bolt of the motor must have anti-loosening measures. 4.20
4.21The reliable life of the motor should meet the requirements of the corresponding life specified in JB/T9008.2. 5 Test method
5.1 General inspection test
5.1.1 Appearance inspection: The coating on the painted surface should be uniform, bright, and consistent in color, and there should be no defects such as paint leakage, wrinkles, and variegated colors. 5.1.2 Check that the circular runout of the outer circle of the shaft end and the tooth shape of the shaft gear should meet the design requirements. 5.1.3 The overall dimensions and their tolerances shall meet the design requirements. 5.1.4 During the test run of the motor, the bearings shall be stable, light and without stagnation. The sound shall be even and harmonious without noise. 5.1.5 The rotor and fan wheel shall be subjected to routine tests on a dynamic balancing machine. 5.1.6 Determination of the air gap of the motor
Use a special end cover with three equally divided holes along the circumference, install it on the motor, and use a thickness gauge through the three holes to measure the air gap at three points between the stator and the rotor (this method is preferred); three fuses of equal size and greater than the standard value of the measured air gap can also be used, arranged in the stator chamber along the circumference. Then push the rotor without the coil spring in, install the end cover and apply a certain pressure to make it in a normal installation or working state, then take out the fuse and measure its thickness (that is, the air gap).
5.2 The insulation resistance of the winding to the housing and between windings shall be measured in accordance with the provisions of Chapter 3 of GB/T1032-1985. 5.3 The DC resistance of the winding under actual cooling shall be measured in accordance with the provisions of Chapter 4 of GB/T1032-1985. 5.4 The no-load test
shall be carried out in accordance with the provisions of Chapter 6 of GB/T1032-1985. 5.5 The stall test
shall be carried out in accordance with the provisions of Chapter 7 of GB/T1032-1985. 5.6 The withstand voltage test of the winding between phases and the winding to the housing shall be carried out when the motor is stationary. During the test, the voltage shall be applied between the winding and the housing. At this time, other windings not involved in the test shall be connected to the iron core and the housing. The test voltage increases from U./2 to Ui and maintains for 1min. 5.7 Short-time voltage increase test of winding
Perform according to the provisions of Chapter 16 of GB/T1032--1985. 5.8 Thermal control temperature test of thermal control element
The thermal control element should be pre-screened, and the two wires of the thermocouple buried between the windings are insulated from each other, tightly twisted together, and welded to the nodes, and buried in the stator winding. After the winding is completed, use a multimeter to judge the on-off status of the thermal control element and the quality of the element. Apply 120V voltage (depending on the winding reactance) between the windings to heat the windings. When the temperature gradually rises to the operating temperature of the thermal control element, the element should be able to cut off the power supply immediately. The operating temperature of the thermal control element should generally be higher than the limiting operating temperature of the motor, which should be 170C±10C or 160C±10℃.
The off-control temperature test is subject to 5% spot check.
5.9 Static braking torque
Use a special tool to connect a spring scale at the end of the motor shaft, and hang a weight on the spring scale. Test at three equal positions on the circumference. According to the test, calculate the average value of the sum of the weight of the special tool and the weight of the magnetic code to the motor shaft torque, which is the static braking torque value of the motor under test.
Measurement of motor noise
Perform the provisions of Chapter 14 of GB/T1032--1985. 5.11 Motor load test
Determine the following parameters and working characteristic curves: a) stator current;
b) input power;
c) output power;
d) power factor;
e) slip rate.
5.11.1 The test method of parameters shall be carried out in accordance with the provisions of Chapter 9 of GB/T1032--1985. 5.11.2 Load working characteristic curve
During the test, the instrument device is shown in Figure 1.
1-Motor under test; 2-Rotation sensor; 3-PY instrument: 4-XY recorder: 5-DC generator; R-Resistor Figure 1
During the test, the sensor is used to test the speed and torque, and the PY instrument and XY recorder are connected. The DC motor Z used as the load must not be disconnected. First, the speed n is measured. Then, when the motor is running to the normal state, the rotor is blocked, and the parameter curves with the speed n as the horizontal axis are measured and drawn: M=f(n); I=f(n); p,=(n); cosg=f(n). The parameter curve is shown in Figure 2. 218
5.12 Determination of maximum torque
JB/T9008.3-1999
It shall be carried out in accordance with the provisions of Chapter 11 of GB/T1032--1985. 5.13 Short-time overtorque test
Carry out in accordance with the provisions of Chapter 10 of GB/T1032--1985. 5.14 Determination of axial magnetic tension and displacement
The force and displacement sensor is installed at the output shaft end or tail connection of the motor using a bracket with adjustable axial distance. The bracket should be fixed on the outer ring of the rolling bearing, and the inner ring of the rolling bearing is connected to the motor shaft, or an intermediate sleeve is processed at the connection between the bracket and the outer ring of the bearing. The outer side of the sleeve is fastened to the bracket, and the inner side is installed on the outer ring of the rolling bearing, which can slide axially. The sensor, bracket, motor shaft end, and XY recorder cooperate with each other, as shown in Figure 3.
The force sensor 3 is fixed on the outer ring of the rolling bearing at the motor shaft end and moves simultaneously with the shaft. The displacement sensor 7 is fixed on the screw 6, and the position of the force sensor and the motor shaft can be adjusted by the screw. After the two sensors are installed, the position adjustment is carefully carried out before starting the motor.
The no-load axial magnetic pull is calculated by formula (1):
Axial magnetic pull - spring force + residual magnetic pull 5
1—Motor under test; 2-Connection sleeve + 3—Force sensor; 4—pY instrument; 5-XY recorder 6—Adjustable screw; 7—Displacement sensor Figure 3
5.15 Temperature rise test
Perform in accordance with the provisions of Chapter 8 of GB/T1032-1985 (the temperature rise test method installed on the whole machine shall be in accordance with the provisions of JB/T9008.4). 5.16 Overspeed test
Perform in accordance with the provisions of Chapter 13 of GB/T1032-1985. 219
5.17 Determination of moment of inertia
JB/T9008.3—1999
Perform according to the provisions of Chapter 18 of GB/T1032—1985. 5.18 Voltage reduction test
When the terminal voltage of the motor is reduced to 85% of the rated voltage, drive the rated load on the electric hoist or with a verified simulated load method. At this time, each mechanism (or the motor itself) should be able to start and work. 5.19 Shell protection performance test
Perform according to the provisions of Chapter 5 of GB/T4942.1—1985. 6 Inspection rules
6.1 Factory inspection (i.e. inspection test)
Each motor must pass the factory inspection before it can leave the factory, and it must be accompanied by a product certificate. The factory inspection test shall include the following items: 6.1.1 General inspection test:
a) Appearance inspection;
b) Circular runout of the shaft extension outer circle and shaft gear inspection; c) Installation dimension and outer dimension inspection;
d) Bearing inspection;
e) Rotor dynamic balance and fan wheel (inspection during the process) inspection; f) Motor air gap inspection (inspection during the process). 6.1.2 Determination of insulation resistance of winding to housing and between windings. 6.1.3 Determination of DC resistance of winding under actual cooling state. 6.1.4 Determination of no-load current and loss.
6.1.5 Determination of stall current, loss, stall torque and stall input power. 6.1.6
Voltage withstand test between winding phases and between winding and housing (phase-to-phase test of winding is allowed to be carried out during semi-finished product period). 6.1.7
Short-time voltage rise test of windings.
Temperature monitoring inspection.
Noise measurement.
6.1.10 Static braking torque measurement.
6.2 Type inspection
Type inspection shall be carried out for any of the following conditions: a) When the manufacturer conducts the first trial production after the identification and finalization; b) When the design and process changes are sufficient to cause changes in certain performance parameters; c) When the inspection test results and the previous type test results have an unacceptable deviation; d) Regular spot check tests of batch-produced motors, the spot check time shall be at least once a year, and each time shall not be less than 2 units. In addition to all factory inspection items, the type inspection shall also carry out the following inspections. 6.2.1 Motor load test.
Maximum torque measurement.
Measure the stall characteristic curve and the no-load characteristic curve. 6.2.4
Short-time over-torque test.
6.2.5 Determination of no-load residual magnetic pull.
6.2.6 Temperature rise test.
Overspeed test.
6.2.8 Determination of moment of inertia.
6.2.9 Shell protection performance test.
6.2.10 Voltage reduction test
JB/T 9008.3--1999
Note: The inspection of 6.2.8 and 6.2.9 is only carried out when the product is finalized or the design change is sufficient to cause the relevant performance of the product to change. 7 Marking, packaging, storage, transportation
7.1 The marking method of the label material and the data and other marks on the label should ensure that the characters and marks are always clear during the use period of the motor.
7.2 The product label should comply with the provisions of GB/T13306. The label should be fixed on the motor base and generally indicate the following items: a) Motor name;
b) Motor model;
c) Rated power, kW;
d) Rated speed, /min;
e) Duty cycle;
f) Rated voltage, V;
g) Rated current, A; | |tt||h) Rated frequency, Hz;
i) Number of phases;
j) Wiring method;
k) Insulation level,
1) Braking torque, N·m;
m) Factory number;
n) Weight, kg,
0) Protection level;
p) Moment of inertia, kgm2;
q) Year and month of manufacture;
r) Name of manufacturer.
7.3 Anti-rust and protective measures shall be taken on the machining surfaces of the motor shaft extension and flange. 7.4 The packaging of the motor shall comply with the provisions of GB/T13384 and shall not be damp or damaged due to improper packaging within one year from the date of shipment.
7.5 The words and signs on the outer wall of the packing box should be clear and neat, and the contents are as follows: a) Name of the shipping station and manufacturer;
b) Name of the receiving station and receiving unit;
c) Motor model and factory number;
d) Net weight of the motor and gross weight of the box; e) Box size, and the words and symbols such as "Do not invert", "Moisture-proof", "Center of Gravity" and so on are marked in appropriate positions outside the box, and the graphics should comply with the provisions of GB191.
7.6 The following documents should be attached to the motor when it leaves the factory: a) Product quality certificate;
b) Installation and maintenance instructions;
c) Packing list and list of random accessories.
8 Warranty period
The manufacturer should guarantee that the supplied motor can work normally within 12 months from the date of use, but not more than 18 months from the date of shipment, under the conditions of proper storage, reasonable installation and correct use by the user. 221
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