Some standard content:
Machinery Industry Standard of the People's Republic of China
JB/T7357-94
Raking Mining Winch
Published on July 18, 1994
Ministry of Machinery Industry of the People's Republic of China
Implementation on July 1, 1995
Mechanical Industry Standard of the People's Republic of China
1 Subject Content and Scope of Application
JB/T 7357--94
This standard specifies the type and basic parameters, technical requirements, test methods, acceptance rules and marks, packaging, transportation and storage of raking mining winches.
This standard applies to motor-driven raking mining winches (hereinafter referred to as winches), which are mainly used for raking and transporting ore and rock in metal mines and other mines, and are suitable for raking and transporting ore and rock on slopes with a horizontal and inclination angle of no more than 44\. Reference Standards
GB10095
GB/T 13306
GB/T13384
Type and basic parameters
Precision of involute cylindrical gear
General technical conditions for packaging of electromechanical products
3.1 The winch should be made into a type with the motor and drum coaxially arranged. The electrical equipment is divided into flameproof type and non-flameproof type for mining; according to the operation mode, it is divided into manual operation and remote operation.
Product model representation method
Model example:
Remote operation, manual operation without marking
Motor power, kW
Flameproof, non-flameproof without marking
Consumable winch
Winches
Number of drums
2JPB-15 indicates a flameproof double drum target winch with a motor power of 15kW. 3.3 Basic parameters should comply with the provisions of Table 1. Approved by the Ministry of Machinery Industry on July 18, 1994
Implemented on July 1, 1995
Product model
2JP-15
3JP-15
2JP-22
3JP-22
2JP-30
3JP-30
2JP-45
2 JP-55
3JP-55
2JP-90
2JP-110
Technical requirements
Electric motor
Main steel wire rope
Average tension
Not less than
JB/T7357-94
Average speed±5%
Main steel wire rope
Auxiliary steel wire rope
Main sodium wire
Rope diameter
Capacity
Car weight (including
motor, excluding
target bucket and pulley)
≤205
≤420
≤520
≤660
≤870
≤1155
≤1545
≤2240
≤2875
≤3400
≤3700
≤4120
Products shall comply with the requirements of this standard and be manufactured in accordance with the drawings and technical documents approved through the prescribed procedures. 4.2. Any technical requirements not specified in this standard shall comply with the relevant provisions of the current national standards or industry standards. 4.3
The winch and its electrical equipment shall comply with the requirements of the current safety regulations for metal mines and coal mines. The structure of the winch shall ensure:
In order to facilitate the winch to be transported down and along the roadway, its components shall be able to be disassembled and transported; b.
According to user requirements, the winch can be operated from a distance: the main components of the winch shall be easy to assemble, disassemble and repair; the structure of the winch shall be able to adapt to the self-movement requirements on horizontal or inclined roadways, and the noise of the winch when running idly shall comply with the provisions of Table 2. Table 2
Car power
Noise value
The accuracy of the transmission gear shall not be lower than the requirements of GB10095 intermediate 8-8-7. There shall be no oil stagnation in all seals.
All parts and components must be inspected and qualified, and purchased and outsourced parts must have a certificate of conformity before they can be assembled. The mechanical properties of the main parts material shall meet the requirements of Table 3, 75~110www.bzxz.net
Wire rope.
Main parts name
Internal gear
Sun gear, planetary gear,
Axle gear, motor gear
Three-star frame
JB/T7357-94
When weaving manually, the force on the handle shall not exceed 150N. The operating handle shall be made of insulating material.
The circuit voltage (AC) far away from the operating device shall not exceed 36V board
45~53HRC double 240280HB
220~250HB
Gear circumference 56~62HRC
220~240HB
Scope of supply of complete set of weaving machine: winch with motor, bucket, pulley, electrical control equipment and spare parts specified in the packing list. Excluding steel winch, the trouble-free working time is not less than 150h, the working time before the first overhaul is not less than 10300h, and the service life is not less than 15300h.
The temperature rise of bearings and oil in the reduction gear shall not exceed 40℃, and the maximum temperature shall not exceed 80℃. The cleanliness of the reduction gear shall comply with the provisions of Table 4. Table 4
Motor speed
Cleanliness
≤600
≤950
75~110
Under the condition that the user complies with the storage and use rules, within 18 months from the date of shipment from the manufacturer or within 12 months from the date of installation and use, if the product is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall repair or replace parts for the user free of charge. 5 Test methods
5.1 Test conditions
5.1.1 Factory inspection shall be carried out in the manufacturer after the winch is assembled; type inspection shall be carried out in the manufacturer's special test field or in the user unit with test conditions.
5.1.2 The instruments, meters and measuring tools used in the test shall have certificates of conformity and periodic appraisal. Calibration must be carried out before the test, and its performance and error shall comply with the provisions of relevant standards. 5.1.3
When the winch is tested and used, the base shall be placed horizontally and the installation must be firm and reliable. The test shall be carried out at rated voltage, and its limit deviation shall be ±5% of the rated voltage. Test items
Before the test, the winch and its accessories (bucket, pulley) should be visually inspected: whether there is visible damage;
whether there is lubricating oil (grease) in the reduction gear and each lubricating part; the completeness of the matching;
paint surface quality,
JB/T 735794
5.2.2 The winch should be tested for idling in the forward and reverse directions for 15 minutes each, and check: a.
the smoothness of operation;
b.whether the operating device is flexible and reliable;
the temperature rise and maximum temperature of the oil in the bearing and reduction gear; c.
check for oil leakage.
The wire rope tension of the winch is measured by a dynamometer, with an average tension of F. It can be calculated according to formula (1): 5.2.3
Average tension of wire rope, N;
Where. F.
F, tension of the first layer of wire rope on the drum, N; F, -- tension of the outermost layer of wire rope on the drum, N 5.2.4 Wire rope speed v is determined according to formula (2): S
Where: -- wire rope speed, m/s:
S-actually measured wire rope length, m;
T-time used to wind S meters of wire rope, s. 5.2.5 The handle operating force is measured with a dynamometer with an accuracy of 1kg. 5.2.6 The volume of the rope is measured with a tape measure. The limit deviation is ±5% of the standard length. (1)
5.2.7 The winch idling noise is measured with a precision sound level meter. When measuring, the microphone of the sound level meter should be placed 1m away from the winch and at a height not exceeding the top of the winch, and the measurement should be made with the A sound level slow gear. The measuring points should be evenly distributed around the winch, and generally should not be less than four points. If the sound levels measured at adjacent measuring points differ by more than 5dB, additional measuring points should be added in between. The ambient noise value should be 10dB lower than the noise value of the winch being tested, otherwise it should be corrected. The winch noise level value should be the arithmetic average of each measuring point. 5.2.8 When the winch operating handle is in the "relaxed position", measure the winch idling power, and measure the winch input power under rated load and rated speed. The idling power should not exceed 10% of the rated power of the motor. 5.2.9 After the no-load test, the cleanliness of the reduction gear is determined by the filter weighing method. 5.2.10 Under rated load, after the winch has been running continuously for 1 hour, use a thermometer with a scale unit of 1 to 2 ° C to measure the temperature rise of the bearing and oil in the reduction gear.
6 Inspection rules
6.1 Product inspection is divided into factory inspection and type inspection. 6.1.1 Each winch must be inspected by the manufacturer's technical inspection department in accordance with the provisions of Articles 4.4, 4.5, 4.7 and 4.13 of this standard. It can only be shipped after passing the inspection, and the product quality certification documents must be attached. 6.1.2, Type inspection includes all the contents specified in this standard. Mainly applicable to: New product trial production:
Old product replacement:
First prototype of transfer production:
When production is resumed after more than three years of suspension;
Periodic inspection should be carried out once every three years. 6.2 The type inspection of finalized products should be carried out on at least one product from the inventory, and the inspection results shall be signed by the person in charge of the inspection department and filed.
6.3 When the type inspection does not meet the requirements of this standard, it shall be doubled and repeated, and the results of the repeated inspections shall be the final results. 4
7 Marking, packaging, transportation and storage
JB/T735794
Each winch shall be fixed with a product label in a conspicuous position. Its type and size shall comply with the provisions of GB/T13306 and indicate the following contents:
Manufacturer name:
Product model and name;
Main technical performance:
Product number:
Factory date:
f. Number of this standard.
7.2 The packaging of the winch shall comply with the requirements of land and water transportation and loading. If there is no special requirement, the bucket shall not be packaged, and the winch, electrical control equipment and pulley shall be transported in boxes.
7.3 The packaging box shall comply with the relevant provisions of GB/T13384. 7.4 All exposed processed surfaces of winch parts shall be coated with anti-rust oil to prevent rust during transportation and storage. 7.5 The accompanying technical documents should be wrapped in oil paper or plastic bags and packed in the box. The contents include: a.
Instruction manual:
Packing list:
Certificate of conformity:
General drawing, component drawing, and easily photographed parts drawing.
7.6 During the storage period of the winch, the packaging box should be placed indoors or under a shed, and the packaging box should be kept intact and the parts should not be rusted. Additional notes:
This standard is under the jurisdiction of the Luoyang Mining Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Jinzhou Mining Machinery Factory. The main drafter of this standard is Liu Yao
From the date of implementation of this standard, the GB3470=83, JB964-82 and JB4101-85 standards that have been adjusted to industry standards will be invalidated.
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