Lifting device for lifting overhead ground wire on straight concrete pole

Abstract

The invention discloses a lifting device for lifting an overhead ground wire on a straight concrete pole. The lifting device comprises a fixing member, a supporting member and a lifting member. The fixing member comprises two hoops. The supporting member comprises a vertical support and a transverse suspension. The bottom of the vertical support is fixedly connected with one hoop. The transverse suspension is arranged at the top of the vertical support. The transverse suspension and the hoop are arranged on two sides of the vertical support respectively. The lifting member comprises a screw, a threaded tube and an adjustable rotating handle, and a lifting unit comprises a U-shaped clamp which opens down; or the lifting member comprises a screw, a threaded tube and an adjustable rotating handle, and a lifting unit comprises a pulley with a groove, or the lifting unit is a lever hoist. The lifting device has few parts, a mounting method is simple, aerial operations are convenient, the lifting members are optionally selected according to different places, flexibility and convenience are achieved, work efficiency is improved, work conditions are also improved for workers, and safety is improved.

Description

technical field [0001] The invention relates to the technical field of maintenance and repair equipment for overhead transmission lines in the electric power industry, in particular to a concrete rod straight rod overhead ground wire lifting device. Background technique [0002] At present, there are corrosion and other conditions in the overhead ground wires of transmission lines, and they vary with the length of operation years. Concrete pole is a common type of pole in transmission lines, and its structure is somewhat different from that of iron towers. There is no fulcrum above the suspension point of the overhead ground wire. If you want to lift the overhead ground wire for maintenance or replace a new clamp, there is no fixed fulcrum. The rope needs to go around the top of the pole to bear the force, and it is not in a straight line with the force during work. Completing the repair or replacing the new clamp requires tedious and complicated work, which not only takes ...

AI Technical Summary

Problems solved by technology

There is no fulcrum above the suspension point of the overhead ground wire. If you want to lift the overhead ground wire for maintenance or replace a new clamp, there is no fixed fulcrum. The rope needs to go around the top of the pole to bear the force, and it is not in a straight line with the force during work. Completing the repair or replacing the new clamp requires tedious and complicated work, which not only takes a lot of time and manpower, but also poses a safety hazard. Once the stressed rope slips, it will cause great harm to the people standing on the tower

In addition, there is also a method of manpower lifting. Two or more people stand on the same base pole at the same time and lift the overhead ground wire with their shoulders. This method has great potential safety hazards, because some people standing on the pole step on Some of the foot nails use buckles. Once the feet slip, the consequences will be disastrous

At the same time, it is impossible for personnel to stand still and work for a long time. Moreover, when the block distance is too large, the quality of the ground wire is too heavy, and it is not advisable to use the shoulder lift method.

[0003] At present, for the overhead ground wire lifting device without overhead ground wire cross arm, there are called tower ground wire universal lifters, and there are also devices called overhead ground wire lifters, but from the perspective of its function, it cannot completely solve the problems existing in the work

The installation of the tower ground wire universal riser must have a fixed point as a support. With the support of the fixed point, the tower ground wire universal riser can be installed on the tower to make it work, but there are many overhead ground wires in the transmission line concrete pole straight pole There is no crossarm, for which the device is imperfect

If it is to be installed on the straight pole of the concrete pole, the through-hole screw must be removed, which has great potential safety hazards. In addition, when encountering a large distance ground wire, the fixed point may not be able to support the bearing force, and accidents may occur

The lifting point of another overhead ground wire lifter adopts the hook method, and the lifting stroke is short. If the calculation of the overhead ground wire is not accurate during the lifting process, the danger of the overhead ground wire falling may occur. There are great potential safety hazards in equipment and people, which is not conducive to safe production

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