MT/T 779-1998Drawing hoist (English PDF)

Foreword

In order to adapt to the development of the design and production of domestic back column winches, and to facilitate the standardization and serialization of such products, this standard is specially formulated.

This standard is proposed by the Industry Management Department of the State Coal Industry Bureau.

This standard is under the jurisdiction of the Technical Committee for Standardization of Special Equipment for Coal Mines.

This standard was drafted. Huainan Coal Mine Machinery Plant.

1 Scope

This standard specifies a return column winch (hereinafter referred to as the winch) Classification and naming, requirements, test methods, inspection rules, Marking, packaging, shipping Loss and storage.

This standard applies to winches used in environments with coal dust or explosive gases.

2 Reference standards

The following standards contain provisions that, through reference in this standard, constitute provisions of this standard. When this standard was published, the editions shown were all is effective. All standards will be revised, and all parties using this standard should explore the possibility of using the latest versions of the following standards.

3836.1-1983 General requirements for explosion-proof electrical equipment for explosive environments GB 3836.2-1983 Explosion-proof electrical equipment for explosive environments "d" GB/T 10089-1988 Cylindrical worm and worm gear accuracy GB/T 10095-1988 involute cylindrical gear accuracy GB/T 13306-1991 Signage GB/T 13384-1992 general technical requirements for packaging of mechanical and electrical products "Coal Mine Safety Regulations" formulated by the Ministry of Energy of the People's Republic of China in 1992

3 Classification and naming

3.1 The type of winch is single-cylinder winding type, which adopts worm reducer and open gear transmission.

3.2 Product Model.

winch

Back column

Wire rope average static tension, unit 10 kN Modify the serial number

3.3 The basic parameters of the winch shall meet the requirements in Table 1.

Table 1

Model JH-5 JH-8 JH-14 JH-20 JH-26 (28) Wire rope average static tension, kN 50 80 140.200 260 (280) Wire rope average rope speed, m/s <=0.2 reel Diameter, mm 260 300 400 440 520 Capacity of rope, m 80 100 130 170.200 Wire rope Diameter, mm 15.5 17 21.5 24.5 28 Structure rope 6 × 19 Nominal tensile strength, MPa 1550

4 Requirements

5 Test method

6 Inspection rules

6.1 Each winch must pass the inspection of the manufacturer's quality inspection department before passing the factory, and a product certificate should be attached when leaving the factory.

6.2 The types, items, methods and requirements of winch inspection are shown in Table 4.

Table 4

Method and requirements of inspection items Inspection type Factory inspection type inspection

1 Manufacturing and assembly requirements 4.5 (except Table 3) delta delta

2 Visual quality of appearance, 4.6 delta delta

3 Dry run test 5.1 delta delta

4 No-load test 5.2-delta

5 Basic parameters 3.3-delta

6 Performance 4.3-delta

7 Noise

Distance sound level meter to winch 1 m, front, back, left, right, top of the same height as the sound source , Use A-grade slow gear to determine the average value; 4.4.4-delta

8 Cleanliness weighing method, 4.5.4-delta

9 Electrical equipment 4.4.3-delta

10 Complete supply range visual inspection method, 4.7 delta delta

Note.

"delta" indicates required items.

6.3 Type inspection should be carried out in the following cases.

a) When new products are trial-produced or old products are transferred to production;

b) when design, process or material changes affect product performance;

c) when production is stopped for more than 3 years and then resumed;

d) for batch or mass production, every 5 years;

e) When the national quality supervision agency checks the quality of products.

6.4 Each winch needs to be inspected by the factory. The number of type inspections is 2 (1 inspection and 1 spare).

Extracted from the qualified products of the manufacturer.

6.5 When the winch meets the requirements of this standard, the product is judged to be qualified. If the performance does not meet the requirements of 4.3, a re-inspection shall be carried out. After retesting If the requirements are still not met, the product is judged to be unqualified.

7 Marking, packaging, transportation and storage

7.1 Signs

7.1.1 Product Marking each winch shall be fixed with the product label at the position specified in the drawing. The type, size and requirements of the product label should meet GB/T Regulations, and marked the following.

a) the name and logo of the manufacturer;

b) product name and model;

c) main technical parameters;

d) Manufacturing number and date of manufacture.

7.1.2 Packaging mark the outer wall of the packaging box should have obvious text and symbol signs, as follows.

a) the name and address of the manufacturer;

b) product name and model;

c) the receiving unit and address;

d) Net weight and gross weight;

e) box number and external dimensions;

f) date of delivery and number;

g) box center of gravity line and lifting line;

h) Text symbols such as "handle down" and "upside down are not allowed".

7.2 Packaging

7.2.1 Winch packaging shall comply with GB/T 13384.

7.2.2 The following technical documents shall be provided with the winch.

a) product certification;

b) product use and maintenance instructions;

c) packing list;

d) General drawing of product assembly.

7.3 Transport and storage

7.3.1 The transportation of winches shall meet the requirements of railway, highway, waterway transportation and mechanized loading and unloading. Should not be subjected to severe vibration during transportation and shock and damage.

7.3.2 The winch shall be stored in a dry, ventilated, acid-free, rain- and moisture-proof place.