Device for reducing damage of overhead crane magnet disc traction power supply cable

Abstract

The utility model relates to a device for reducing damage to a power supply cable pulled by a crown block magnet disc, which comprises a supporting piece, a lock catch is arranged on the supporting piece and used for locking the cable, a pull buckle is arranged on the supporting piece and close to the lock catch, the pull buckle is connected with a cable net sleeve, the lower end of the cable net sleeve is fixedly connected with the pull buckle, and the cable net sleeve is sleeved on the periphery of the cable. The top of the cable net sleeve is fixedly connected with the outer surface of the cable; according to the utility model, the damage rate of the cable is greatly reduced, the replacement cost of the cable is reduced, the time for normal production due to replacement of the cable is also reduced, and certain economic benefits are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of overhead travelling crane equipment technical field, specifically a device for reducing overhead travelling crane electromagnet tray traction power supply cable damage. BACKGROUND

[0002] Overhead travelling crane is used for the production operation of the lifting of metal materials such as steel, iron and aluminum products by hanging electromagnetic chuck on hook, and the power supply cable of electromagnetic chuck falls vertically from the cable drum on the overhead travelling crane trolley above the chuck, and the other end is connected to the terminal box of the chuck. When the chuck rises and falls, the cable drum always keeps the force of winding the cable back (i.e. the upward tension along the cable), and the cable will be wound back by the drum when the chuck rises, so that the cable does not spin and lengthen in the air. When the chuck falls, a device is needed to "pull" the cable to lengthen it to follow the chuck. In addition, during actual operation, the power supply cable is long, so another device is needed to fix the cable at the other end to keep the cable straight, preventing the cable from swinging in the air. If the cable swings and hits the steel wire rope or other surrounding objects during operation, it will accelerate the wear and tear of the cable, and even cause damage and leakage, which seriously affects the safety and efficiency of production.

[0003] Because the cable is thick, we usually use a steel wire rope U-shaped clamp to clamp the cable and "pull" it tight at a height of 1 meter from the terminal box of the electromagnetic chuck. This method is the simplest and easiest to implement, but it has the following disadvantages: 1. After a period of use, the cable will slide upward between the clamp and the terminal box, and the clamp needs to be tightened every few hours. Maintenance personnel will tighten the clamp too tightly to prevent this displacement. 2. If the clamp is tightened too tightly, it will damage the insulation of the cable. The swinging of the cable during operation will form a bending effect on the cable at the clamp, combined with the upward recovery tension, and the cable at the clamp will become thinner and the insulation will become more fragile over time. Eventually, it will be damaged and the cable will be burned out at the clamp. Some overhead travelling cranes use cable connectors to pull the cable, which are large and cumbersome, and need to be designed and installed with a support. The installation and fixation are not convenient, the power supply cable needs to be disconnected from the connector to make a wire nose connector, and the use and maintenance are not easy, and there is a risk of fatigue damage to the wire nose. SUMMARY

[0004] The utility model aims to solve the problems of the prior art and provide a device for reducing the damage of the power supply cable of the overhead travelling crane electromagnet tray.

[0005] The utility model discloses a specific scheme is: a kind of device for reducing overhead crane magnet traction power supply cable damage, including support piece, locking buckle is equipped on support piece, locking buckle is used to lock cable, support piece is equipped with pull buckle in the vicinity of locking buckle, pull buckle is connected with cable net cover, the lower end of cable net cover is fixedly connected with pull buckle, cable net cover is sheathed in the outer periphery of cable, and the top end of cable net cover is fixedly connected with the outer surface of cable.

[0006] Further, the locking buckle includes a U-shaped screw, a clamping block, and a locking nut. The middle part of the U-shaped screw is fixedly connected with the support piece, and the two ends of the U-shaped screw extend outward. The clamping block is provided with two through holes matched with the U-shaped screw. The locking nut is used to press the clamping block.

[0007] Further, one side of the clamping block facing the cable is provided with an arc-shaped groove matched with the cable.

[0008] Further, the support piece is made of angle steel or I-beam.

[0009] Further, the length of the cable net cover when tightened is greater than 1 meter.

[0010] Compared with the prior art, the utility model has the following advantages: the cable damage rate is greatly reduced, the cable replacement cost is reduced, the time for normal production due to cable replacement is reduced, and certain economic benefits are improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is the schematic diagram of the utility model;

[0012] Figure 2 is the schematic diagram of the utility model in use;

[0013] In the drawing: 1, angle steel; 2, locking buckle; 3, pull buckle; 4, cable net cover. DETAILED DESCRIPTION

[0014] Referring to Figure 1 , the embodiment is a device for reducing overhead crane magnet traction power supply cable damage, which includes a support piece. A locking buckle 2 is mounted on the support piece. The locking buckle 2 is used to lock the cable. A pull buckle 3 is mounted on the support piece near the locking buckle 2. The pull buckle 3 is connected with a cable net cover 4. The lower end of the cable net cover 4 is fixedly connected with the pull buckle 3. The cable net cover 4 is sheathed in the outer periphery of the cable. The top end of the cable net cover 4 is fixedly connected with the outer surface of the cable.

[0015] Further, the locking buckle 2 includes a U-shaped screw, a clamping block, and a locking nut. The middle part of the U-shaped screw is fixedly connected with the support piece, and the two ends of the U-shaped screw extend outward. The clamping block is provided with two through holes matched with the U-shaped screw. The locking nut is used to press the clamping block.

[0016] Further, the cable block is provided with an arc-shaped slot on the side facing the cable.

[0017] Further, the support is made of angle steel 1 or I-beam.

[0018] Further, the length of the cable net 4 when tightened is greater than 1 meter.

[0019] Referring to Figure 2 , the cable net 4 is "pulled" tight, and the force depends on the upward tension of the cable. The greater the tension, the tighter the net is collected. When the tension is small, the net will also automatically collect a little loose, and the net contact part of the "pulled" tight cable is as long as 1 meter, so that the local compression force of the cable is greatly reduced, avoiding the cable insulation outer layer being damaged. The main function of the lock buckle 2 in the utility model is to fix the AB section of the cable without sliding up and down, so as to avoid affecting the pulling effect of the cable net 4. Since the cable is mainly pulled by the cable net 4, the locking nut of the lock buckle 2 does not need to be tightened too much, and only a little force is needed. Unlike the previous method, in order to avoid the cable from slipping, the chuck is excessively tightened, and damage to the local cable caused by the chuck is avoided.

[0020] Because the stainless steel cable net 4 is tightly wrapped outside, the swing of the cable will also be small, so that the AB section of the cable does not exist the negative effect of being repeatedly bent, so that the damage of the cable is avoided.

[0021] When installing the utility model, the support is installed on the hook pulley block of the crown block or the balance beam, the length of the angle steel 1 is appropriate, and the power cable should be ensured to be vertical as much as possible during use, and the inclination angle should not be too large. After installing the angle steel 1 support, first, the single-head side-pulling cable net 4 is used to tighten the cable, the cable is manually pulled and the net is tightened, then the uppermost end of the cable net 4, i.e. Figure 2 A point in the utility model is tightly wrapped with the cable by using electrician's tape, so as to fix the upper end of the cable net 4. Then the pull ring of the cable net 4 is locked with the pull buckle 3 below, and finally the power cable is straightened and clamped with the lock buckle 2, and the wire rope clamp does not need to be tightened too much. The cable will not slide downward relative to the clamp when the cable is pulled downward by one hand. After using the utility model, the service life of the cable is prolonged from 1 month to more than 1 year.

Claims

1. A device for reducing damage to the traction power supply cable of an overhead crane's magnet, characterized in that: The support is provided with a locking buckle for locking the cable, and a pull buckle is arranged on the support near the locking buckle.

2. The device for reducing damage to the traction power cable of the overhead crane according to claim 1, characterized in that: The locking buckle comprises a U-shaped screw rod, a clamping block and a locking nut.

3. The device for reducing damage to the overhead crane's power cable according to claim 2, characterized in that: The clamping block is provided with an arc-shaped groove on the side facing the cable.

4. The device for reducing damage to the power supply cable of the overhead traveling crane according to claim 1, characterized in that: The support is made of angle steel or I-beam.

5. The device for reducing damage to the power supply cable of the overhead traveling crane according to claim 1, characterized in that: The length of the cable net sleeve when being tightened is greater than 1 meter.

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