This standard specifies the classification and naming, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of JTP type mining hoist winches (hereinafter referred to as winches). This standard is applicable to winches used for lifting materials and personnel in inclined tunnels and small shafts in coal mines, metal mines and non-metallic mines. JB/T 7888.1-1999 JTP type mining hoist winches JB/T7888.1-1999 Standard download decompression password: www.bzxz.net

ICS73.100.40
Machinery Industry Standard of the People's Republic of China
JB/T7888.1-1999
JTP Type Mine Winder
Published on 1999-06-28
National Bureau of Machinery Industry
Implemented on 2000-01-01
JB/T7888.1-1999
This standard is a revision of JB/T7888-95 "JTP Type Mine Winder". Compared with JB/T7888-95, the main technical content of this standard has been changed as follows: The relevant content of the test method has been supplemented:
The description of varieties and specifications in the original standard has been deleted. This standard replaces JB/T7888-95 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Mining Machinery. The responsible drafting unit of this standard is Shanghai Metallurgical Mining Machinery Factory. The main drafters of this standard are Zhu Guohua, Zhu Huafu, Huang Penglin and Lu Qiuyun. This standard was first issued in 1977, and was approved as the national standard GB4594-84 after revision in 1984. It was adjusted to JB/T788895 in April 1996.
Machinery Industry Standard of the People's Republic of China
JTP Type Mine Winder
JTP Type Mine Winder
JB/T 7888.1-1999
Replaces JB/T7888-95
This standard specifies the classification and naming, technical requirements, test methods, inspection rules, marking, packaging, transportation and purchase and storage of JTP Type Mine Winder (hereinafter referred to as winch). This standard applies to winches used for lifting materials and personnel in inclined tunnels and small shafts in coal mines, metal mines and non-metallic mines. 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 will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB 191-1990
GB/T 10095—1988
GB/T 13306—1991
GB/T13325—1991
GB/T13384—1992
JB/T 16041998
JB/T 3277-1991
JB/T 3721-1999
JB 85161997
Product classification and naming
Packaging, storage and transportation pictorial symbols
Involute cylindrical gear accuracy
Radiated noise from machines and equipmentBasic criteria for noise measurement at the operator position (engineering level)General technical conditions for packaging of electromechanical products
Product model compilation method for mining machinery
Mine hoists and mine hoisting winchesHydraulic stationsDisc brake shoes for mine hoists
Safety requirements for mine hoists and mine hoisting winchesThe basic parameters and dimensions of the winch shall comply with the provisions of the table. Table 1
Approved by the State Machinery Industry Bureau on 1999-06-28Widthwww.bzxz.net
Static tension
Static tension difference
Steel wire
Maximum diameter
Number of winding layers
Maximum lifting
Lifting speed
Minda lifting
Lifting distance
Implemented on 2000-01-01
JB/T7888 .1-1999
3.2 The model shall comply with the provisions of JB/T1604, and the expression method is as follows: drum diameter, m
Hydraulic disc brake (disc)
Mining hoist winch (lift)
Wind (winding)
Number of drums, one without note
4 Technical requirements
4.1 The safety requirements of the winch shall comply with the provisions of JB8516. 4.2 The reducer of the winch shall meet the following requirements: a) Smooth and normal operation, no-load noise is not more than 88dB (A): b) The contact spots of the gear pair shall comply with the provisions of GB/T10095 8 levels; c) The oil temperature shall not exceed 70℃, and the temperature rise shall not exceed 35℃; the bearing temperature shall not exceed 80℃, and the temperature rise shall not exceed 40℃. 4.3 The noise of the winch at the control panel position shall not exceed 85dB (A). 4.4 The main shaft device of the winch shall meet the following requirements: a) The rope adjustment clutch system shall be maintained at 1.25 times the clutch working oil pressure for 5 minutes, and there shall be no oil leakage in the seals and pipelines; b) The clutch shall be able to open and close smoothly at an oil pressure of 2.5~3.0MPa; c) The end face runout of each side of the brake disc edge shall not be greater than 0.4mm. 4.5 The stroke difference of each pair of disc brake shoes shall not be greater than 10% of the single-side stroke under the rated oil pressure. 4.6 The performance of the hydraulic station shall comply with the relevant provisions of JB/T3277. 4.7 The performance of the brake shoe shall comply with the provisions of JB/T3721. 4.8 Life and overhaul period: The service life of the winch (including the reducer) before cancellation shall be no less than 15 years; the service life before the first overhaul shall be no less than 8 years.
5 Test method
5.1 Reducer no-load noise
Set a common sound level meter (A weighting) 1m away from the reducer, and its height is the horizontal plane formed by the split surface of the reducer. When measuring, there are no less than six points evenly distributed around, and the average value is taken. 5.2 Gear pair contact spots
Measure according to the provisions of GB/T10095.
5.3 Temperature rise
After the reducer stops running at no load for 6h, measure the difference between the oil pool temperature and the bearing housing temperature and the ambient temperature. 5.4 Machine noise
Measure according to the provisions of GB/T13325.
5.5 Clutch test of rope adjusting device of double winch Hold the movable drum, disengage the clutch, run forward and reverse for 2 minutes at the rope adjusting speed, and carry out clutch test according to the provisions of 4.4b). 2
5.6 The end face runout of the brake disc edge
is used for submeter measurement.
5.7 The travel difference of the disc brake shoe
is measured with a micrometer under rated oil pressure.
5.8 Hydraulic station performance test
The test is carried out according to the provisions of JB/T3277.
5.9 Brake shoe performance test
The test is carried out according to the provisions of JB/T3721.
Inspection rules
JB/T7888.1-1999
Each winch must be inspected and qualified by the quality inspection department of the manufacturer before it can be shipped out of the factory, and a product certificate of conformity shall be attached. 6.2 The inspection of winches is divided into factory inspection and type inspection, and the inspection items are in accordance with the provisions of Table 2. Table 2
Reducer no-load noise
Gear pair contact spot
Complete machine noise
Double-simple comparison vehicle test set device clutch test
Brake disc edge end face runout record
Disc brake shoe travel difference
Station performance test
Shoe performance test
Technical requirements
6.3 Type inspection should be carried out in any of the following situations: a) Trial determination and identification of new products developed or transferred to the factory; test method
b) When the design, process or material of the product changes and affects the performance of the product; c) When the product is resumed after being discontinued for 3 years; d) Products produced in batches are inspected regularly every 5 years; e) When the national quality supervision agency puts forward type inspection requirements. Factory inspection
Type inspection
6.4 The sample for type inspection is one unit, and the number of samples shall not be less than two units. If there are unqualified items in the inspection, it is allowed to be adjusted once. If it is still unqualified, the type inspection shall be judged as unqualified.
7 Marking
7.1 Product marking
Each winch shall be fixed with a product label in an appropriate and obvious position, and its type and size shall comply with the provisions of GB/T13306. The contents are as follows:
a) winch model and name:
b) main technical specifications;
c) manufacturing date:
d) factory number:
e) product standard number.
7.2 Packaging marking
JB/T7888.1-1999
The text and logo on the outside of the packaging shall comply with the provisions of GB191. 8 Packaging, transportation and storage
The packaging of the winch shall comply with the relevant provisions of GB/T13384. 8.1
8.2 Random information
The manufacturer shall send the following technical documents to the user at random, pack them in the box and mark them on the outside of the box. a) Packing list;
b) Product factory qualification certificate;
c) Instruction manual;
d) General drawing and foundation drawing:
e) List of random accessories.
8.3 Transportation
The winch should comply with the relevant regulations for water and land transportation. 8.4 Storage
The surface of winch parts should be coated with anti-rust oil, and the winch anti-rust period should be guaranteed to be no less than 3 years. 8.4.1
8.4.2 The user should regularly check the oil seal of the winch, no less than once every six months. And replace it according to the necessary degree. The winch should be stored in the shed to prevent damage by rain and snow. Small parts packed in boxes should be stored indoors.
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