JB/T 4287-1999 This standard is a revision of JB 4287-86 "JT-0.8 and 2JT-0.8 Mining Lifting Winch". During the revision, the requirements for block brake mining hoisting winches were moved to JB/T 7888.2-1999 "JTK Type Mining Hoisting Winch"; winches with drum diameters of 1m and 1.2m were added. This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of belt-type mining hoisting winches. This standard is applicable to explosion-proof and non-explosion-proof belt brake mine lifting winches used for lifting and lowering materials in coal mines and other mines. This standard was first published on August 15, 1986. JB/T 4287-1999 Belt brake mining hoisting winch JB/T4287-1999 Standard download and decompression password: www.bzxz.net

ICS 73.100.40
D93
JB
Machinery Industry Standard of the People's Republic of China
JB/T4287-1999
Belt brake mining hoisting winch
Minewinchwithbeltbrake
Released on 1999-06-28
National Machinery Industry Bureau
Released
Implemented on 2000-01-01
JB/ T4287-1999
Foreword
This standard is a revision of JB428786 "JT-0.8 and 2JT-0.8 type mining lifting winch". Compared with JB4287-86, the main technical content of this standard has changed as follows: the requirements for block brake mining hoisting winches have been moved to JB/T7888.2-1999 "JTK type mining hoisting winches"; a volume has been added Winches with barrel diameters of 1m and 1.2m. This standard will replace JB4287-86 from the date of implementation. This standard is proposed and administered by the National Mining Machine Standardization Technical Committee. The unit responsible for drafting this standard: Shanxi Machinery Manufacturing Company. The organization participating in the drafting of this standard: Jiaozuo Institute of Technology Machinery Factory. The main drafters of this standard: Fang Mingye, Li Kaidong, Wang Hongchang, Yang Fuqing, Yang Baolin, and Guo Ming. 1 Scope
Machinery Industry Standard of the People's Republic of China
Mining hoisting winch with belt brake
Mine winch with belt brake
JB/T 42871999
Replaces JB428786
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of belt-type mining hoisting winches.
This standard is mainly applicable to explosion-proof and non-explosion-proof belt brake mining hoisting winches (hereinafter referred to as winches) used for lifting and lowering materials in coal mines and other mines.
2 Reference standards
The provisions contained in the following standards constitute provisions of this standard by being quoted in this standard. At the time of publication, the editions indicated were valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards, GB 19)-1990
GB/T·3768-1996
GB 3836.11983||tt ||GB/T 4879—-1985
GB/T10095—1988
GB/T 133061991
GB/T13384—1992
JB/T1604—1998|| tt | Simple method General requirements for explosion-proof electrical equipment for explosive environments Anti-rust packaging
Involute cylindrical gear accuracy
Signs
General technical conditions for mechanical and electrical product packaging
Mining machinery product models Preparation method
Cleanliness of gear transmission
Coal hoist and mining hoisting winch
Safety requirements
Coal Mine Safety Regulations (1992 Edition)
3 Product Category
3.1 The winch separates explosion-proof and non-explosion-proof types.
3.2 The product model representation method shall comply with the provisions of JB/T1604. T
BO×O
Roll width, m
Roll diameter, m
Explosion-proof type (not noted for non-dry-proof type)
Lifting winch
Wind type
Number of winches (not noted for simple numbers)
Approved by the National Machinery Industry Bureau on 1999-06-28 and implemented on 2000-01-01
3.3 Model marking example:
JB/T4287--1999
a) The roll diameter is 800mm, the roll width is 650mm, and the single roll non-explosionproof lifting winch: JT-0.8×0.65 Lifting winch
b) The drum diameter is 800mm, the drum width is 500mm, the double drum explosion-proof lifting winch: 2JTB-0.8×0.5 lifting winch
The basic parameters of the 3.4 winch should comply with the table 1 regulations. Table 1
Volume
No.
Type
JT0.8×0.6
JT0.8×0.65
2JT-0.8×0.5
IT1×0.8
JT-1.2×1
2JT1.2×0.8
4 technical requirements
number
diameter| |tt||mm
800
800
800
1000
1200
简
Width||tt ||mm
600
650
500
800
1000
1200
800
load
maximum static tension
kN
15
25
t5
20
30
25
charge
maximum static tension difference
kN
15
25
10
20||tt| |30
15
diameter
mm
16
18
16
18
20
20
Steel wire
Total breaking tension
kN
160
202
160
202
282
282
4.1 The winch should comply with the requirements of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. 4.2 The winch should comply with the relevant provisions of the "Coal Mine Safety Regulations" and JB8516. 4.3 The wearing parts and general parts of the winch should ensure their interchangeability. 4.4 The raw materials, standard parts, and outsourced parts used in the winch should comply with current relevant standards. 4.5 The working noise of the winch at the driver's operating position should not be greater than 88dB(A). Average speed
m/s
1.00~1.48
1.78
≤2.16
Rong Shengjin
m
480
400
340
600
600
420
4.6 The accuracy of open gear transmission should not be lower than that in GB/T10095 Level 9 regulations. For winches using ordinary cylindrical gear reducers, the gear accuracy should not be lower than the level 8 requirements of GB/T10095. The cleanliness of the winch reducer should meet the J-level requirements of JB/T7929. 4.7
The supporting electrical equipment of the flameproof winch shall comply with the regulations of GB3836.1. 4.8
All lubricated parts of the winch should be well lubricated, and there should be no leakage at the seal of the reducer. 4.9
4. 10
4. 11
4. 12
4.13
4. 14
4. 1s||tt ||4. 16
The oil temperature rise at each bearing of the winch and reducer should not exceed 40℃, and the maximum temperature should not exceed 80℃. The winch should operate smoothly and reliably without any abnormal noise, and there should be no looseness in the connecting parts of the fasteners. The winch brake action should be sensitive, the braking should be smooth and reliable, and there should be no jamming phenomenon. The braking torque of the winch brake shall not be less than three times the rated static torque. After the brake belt of the winch brake is released, it should be completely separated from the brake wheel surface. The contact area between the winch brake and the brake wheel should be no less than 70%. The car clutch should be safe and reliable.
The winch should be painted evenly without defects such as wrinkles, bubbles, flow marks, and cracks. 4.17
4.18 Complete supply scope of winches:
JB/T 4287—1999
a) Mechanical part (excluding wire rope), electrical equipment; b) One-time random spare parts; || tt||c) Random technical documents.
4.19. Under the condition that the user abides by the rules of custody, use, storage, installation and transportation, within 12 months from the date of shipment from the manufacturer or within six months of installation and use, if the product is damaged or cannot work properly due to poor manufacturing quality , the manufacturing unit shall repair or replace it for the user free of charge.
5 Test methods
5.1 The winch should be subjected to various tests at the rated voltage (tolerance is ±5%). The instruments and meters used in the test should be accompanied by valid certificates or periodic calibration certificates.
5.2 No-load test, run the winch forward and reverse for 30 minutes each, and observe the movement, sound, vibration and leakage of each part. 5.3 Load test: The winch is loaded step by step at 25%, 50% and 75% of the rated load, and the winch is operated continuously in forward and reverse directions for more than 2 hours under the rated load. During operation, the movement, sound, vibration and leakage of each part are observed. 5.4 Overload test: The overload test shall be carried out after passing the load test. The load shall be 120% of the rated load. The test shall be lifted three times. The running distance shall not be less than 10m each time, and no abnormal phenomena shall occur. 5.5 During the load test, detect noise according to GB/T8768. 5.6 After the winch load test, use a thermometer to check the oil temperature, and use a point thermometer to detect the temperature at the bearing. 5.7 After the no-load test of the winch, check the cleanliness of the reducer according to JB/T7929. 5.8 Use a tension meter with an accuracy of not less than level 2 to detect the maximum static tension of the wire rope. 5.9 The speed of the wire rope is tested by the photoelectric method with a photoelectric sensor and a photoelectric oscilloscope, or a tachometer can be used: 6 Inspection Rules | certified documents. 6.2 The winch inspection is divided into factory inspection and type inspection. Factory inspection and type inspection are carried out at the manufacturer (type inspection can also be carried out at the site of use)
6.3 Each winch must undergo factory inspection, and the factory inspection should comply with 4.1, 4.6, 4.8, 4.9, 4.11, 4.12, 4.17 and 4.18 requirements.
6.4 During the factory inspection of winches, 10% (not less than one) of the batch should be subjected to load test. 6.5 Type inspection should be carried out when any of the following situations occurs: a) Trial model identification of a new winch developed or transferred to a factory for production; b) After formal production, if the design, process or materials of the winch are significantly changed, it may affect its quality Performance: c) When the winch has been out of production for more than 3 years and resumes production; d) When the national quality supervision agency proposes type inspection requirements. 6.6 The type inspection content should include all the requirements of this standard. 7 Marking, packaging, transportation and storage
7.1 Each winch should have a product label fixed at its obvious and appropriate location. The type and size of the sign should comply with the regulations of GB/T13306. Content includes: www.bzxz.net
a) Winch model and name:
b) Main technical parameters:
c) Manufacturer name;
d) Manufacturing date, factory number:
e) trademark.
JB/T4287-1999
7.2 The packaging of the winch should comply with the relevant requirements of GB/T13384, and the packaging, storage and transportation pictorial signs should comply with the relevant provisions of GB191: 7.3
The exposed processing surface of the winch Anti-rust treatment should be carried out and comply with the regulations of GB/4879. The winch should be protected from collision damage during transportation. 7.4
The winch must not be stored in the open air, and must not come into contact with corrosive objects and heat sources. 7.5
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.