Manufacturing standard of winch wire rope hook head

1、 Manufacturing standard of hook head fixed by rope clamp

1. Production standard

(1) Generally, the number of rope clamps shall not be less than 3-7, and the spacing of rope clamps shall be 6-7 times of the diameter of steel wire rope; The number of clips shall be determined according to the diameter of steel wire rope, no less than 3 for less than 19mm, no less than 4 for 19-32mm, no less than 5 for 32-38mm, no less than 6 for 38-44mm and no less than 7 for 44-60mm.

(2) The steel wire rope and the rope clamp shall be used together, and the direction of the rope clamp shall be consistent. The tail part of the U-ring shall be clamped on one side of the rope head, and the pressing plate shall be placed on one side of the main rope.

(3) A safety rope clamp shall be installed about 500mm behind the last rope clamp, and a 30-50mm long "safety bend" shall be made between the safety rope clamp and the last rope clamp.

(3) The distance between the tail rope head and the safety rope clamp shall not be less than 140-160mm.

(5) Before cutting the end of tail rope, tie it with iron wire to ensure that the end of steel wire rope is not loose. The number of binding wires shall be: 3 for hemp core wire rope and 4 for steel core wire rope.

Manufacturing standard of winch wire rope hook head

2. Precautions for use of wire rope hook head fixed with rope clamp

(1) The size of the rope clamp is suitable for the thickness of the steel wire rope and the inner clear distance of the U-ring,

The rope is too tight, and the diameter of the rope is 1 ~ 3mm larger than that of the wire rope. Accident prone.

(2) When installing the rope clamp, be sure to tighten the bolt until the rope is flattened by 1 / 3 ~ 1 / 4 diameter. After the rope is stressed, tighten the rope clamp bolt again to ensure that the joint is firm and reliable.

(3) The U-shaped part is in contact with the rope head and cannot be in contact with the main rope. If the U-shaped part is in contact with the main rope, the wire is easy to break when the main rope is flattened.

(4) The strength of the fixed position between the rope clamps depends on the correct arrangement of the rope clamp on the steel wire rope and the proficiency of the rope clamp fixing operation. The tightness of the nut on the rope clamp or the insufficient number of rope clamps may cause the rope end to slide during bearing. If the rope clamps are correctly arranged and clamped in strict accordance with the specified quantity, the strength of the fixed part is 80% of the strength of the steel wire rope itself.

(5) The rope clamp furthest from the collar shall not be fastened separately first. The rope clamp (the first rope clamp) closest to the collar shall be as close to the ring as possible, but the correct tightening of the rope clamp shall still be ensured, and the outer steel wire of the steel wire rope shall not be damaged.

(6) When the rope clamp is in actual use, the fastening of the rope clamp must be checked after being loaded for 1-2 times.

2、 Manufacturing standard of steel wire rope hook head with plug-in mode

1. Manufacturing standard:

(1) When the hook head fixing collar adopts plug-in, the plug-in length shall be greater than 15 times the diameter of steel wire rope and at least greater than 300mm.

(2) Schematic diagram of wire rope hook head with plug-in mode:

Manufacturing standard of winch wire rope hook head

3、 Manufacturing standard of safety rope

1. When transporting in inclined shafts and lanes, safety ropes shall be added according to Article 412 of the coal mine safety code.

2. One end of the safety rope is fixed at the rear end of the main hook head not less than 600mm through the rope clamp. The manufacturing method of the safety rope hook head is made according to the standard of the main hook head;

3. The diameter of the safety rope shall be the same as that of the traction wire rope, and the length shall be the total allowable Trailer length plus 1.5m.