CN204144804U - The general line lifter of overhead ground wire - Google Patents

Abstract

The utility model discloses a general-purpose wire lifter for overhead ground wires, which comprises a wire lifting rod. The wire lifting rod includes a hanging part at the top and a screw part below the hanging part. The outer circle side of the screw part is covered with Sleeve, the inner circle of the upper part of the sleeve is provided with internal thread and threaded connection with the screw rod part, the outer circle of the upper part of the sleeve is covered with a wire holder, and the wire holder includes a seat body, and the inside of the seat body is An inner cylindrical body is provided, a bearing is provided between the inner cylindrical body and the sleeve, a thread lifting head protrudes upward from one side of the base body, and a thread lifting head with an upward opening is provided on the thread lifting head groove, and the underside of the sleeve is connected with a handle that drives the sleeve to rotate. The utility model can simplify the operation of the tools, shorten the working time, reduce the working personnel, and relatively improve the working efficiency and working safety.

Description

Universal wire lifter for overhead ground wire

technical field

The utility model relates to electric power technology, in particular to the construction technology of overhead ground wires.

Background technique

In the existing overhead ground wire hoisting operations, chain hoists are used. In the actual line, the suspension length of many straight tower overhead ground wires and optical cables is relatively short. When lifting the wires, due to the limitation of the structure of the chain hoist itself, it is not possible to lift the wires in a "straight-up" method, but only in a "back-up" method. "lift the line, but this will increase the force on the tower hanging point, which is about 1.4 to 2 times the normal force, which is unfavorable to the tower. It has happened that the top frame of the ground wire was damaged during the operation of the 110KV 7725 tower. Bending phenomenon; In addition, the chain hoist is used to lift the wire in the "upside down" method. Because the tools are relatively heavy, 4 operators are required, 2 on the tower and 2 on the ground.

Utility model content

The technical problem to be solved by the utility model is to provide a general wire lifter for overhead ground wires, which simplifies the structure and improves the efficiency.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: a universal wire lifter for overhead ground wires, including a wire lifting rod, and the wire lifting rod includes a hanging part at the top and a screw part below the hanging part, and the screw rod There is a sleeve on the outer circle side of the sleeve, and the upper inner circle of the sleeve is provided with an internal thread and threaded connection with the screw rod part. The upper outer circle of the sleeve is covered with a thread holder, and the thread holder includes a seat body, an inner cylindrical body is provided inside the seat body, a bearing is provided between the inner cylindrical body and the sleeve, a thread lifting head protrudes upward from one side of the seat body, and a thread lifting head is provided on the thread lifting head A thread-lifting slot opening upward is provided, and a thread-lifting handle is connected to the underside of the sleeve to drive the sleeve to rotate.

Preferably, the upper and lower sides of the inner cylindrical body of the seat body are respectively provided with an upper bearing and a lower bearing, and the inner cylindrical body is provided with a shaft sleeve between the upper bearing and the lower bearing, and the upper end of the inner cylindrical body The inner circle is provided with an upper flange, the upper bearing is arranged between the upper end of the sleeve and the upper flange, and the sleeve is provided with a lower flange on the outer circle of the lower side of the seat body, and the upper end of the lower bearing is in contact with the sleeve The bottom end abuts against the lower flange.

Preferably, the outer circle of the upper end of the sleeve is provided with a ring groove, and a snap ring is arranged in the ring groove, and the outer circle of the lower end of the sleeve is provided with an external thread, and a nut is screwed on the external thread.

Preferably, the sleeve is provided with ratchet teeth on the outer circle between the lower flange and the external thread, the wire handle is overlaid on the ratchet teeth, and the wire handle is provided with a steering ratchet for converting the up and down movement direction of the sleeve claw.

Preferably, the suspension part is bent in a circular arc toward the upper side, the head end of the suspension part is provided with a flat head, and the flat head is provided with a suspension hole.

The technical scheme adopted in the utility model is suspended and fixed on the pole tower through the suspension part at the top of the wire lifting rod, and the wire lifting handle drives the sleeve to rotate. The rotary motion of the sleeve is converted into the up and down linear motion of the sleeve, and the sleeve drives the wire lifting seat up and down to complete the wire lifting operation.

Therefore, the beneficial effects of the utility model are:

First of all, the overhead ground wire is directly lifted by the wire lifting seat, which belongs to the "straight hit" method of lifting the wire, which will not increase the force on the tower and ensure the safety of the force on the tower;

Secondly, one person hangs and fixes the wire lifter on the pole tower, and then operates the wire lift handle to carry out the wire lifting operation, and the other person assists in the operation under the pole tower, and two people can complete the operation, which can simplify the operation of tools and shorten the working time , reduce operating personnel, relatively improve work efficiency and work safety;

Finally, the universal wire lifter for overhead ground wires can adapt to the current situation that there are many types of transmission line poles and towers, and the top frames of overhead ground wires have different structures, and has wide versatility and high practical value.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the front view of the thread lifting rod;

Fig. 3 is a top view of the thread lifting rod;

Fig. 4 is the structural representation of sleeve;

Fig. 5 is a structural schematic diagram of the wire handle seat.

Detailed ways

As shown in Figures 1 to 5, the universal wire lifter for overhead ground wires includes a wire lifting rod 1, and the wire lifting rod 1 includes a hanging part 11 at the top and a screw part 12 below the hanging part, the screw part A sleeve 2 is sheathed on the outer circle side of the sleeve 2, and an internal thread 21 is provided on the inner circle of the upper part of the sleeve 2 to be threadedly connected with the screw shaft.

The upper outer circle of the sleeve is covered with a thread-handling seat 3, and the thread-handling seat includes a seat body 31, and a side of the seat body protrudes upwards to provide a thread-handling head 32, and the thread-handling head is provided with an upward opening. The thread lifting groove is U-shaped, and the width gradually narrows from the mouth to the bottom. The seat body and the thread lifting head are connected by ribs 33 on both sides. The cable holder is made of LC4-CS aluminum plate.

An inner cylindrical body is arranged inside the seat body, a screw bearing is arranged between the inner cylindrical body and the sleeve, and a wire handle 4 is connected to the lower side of the sleeve to drive the rotation of the sleeve.

The upper and lower sides of the inner cylindrical body of the seat are respectively provided with screw bearings, i.e. an upper bearing 26 and a lower bearing 28, and the inner cylindrical body is provided with a shaft sleeve 27 between the upper bearing and the lower bearing. The inner circle of the upper end of the cylindrical body is provided with an upper flange 311, the upper bearing is arranged between the upper end of the shaft sleeve and the upper flange, and the sleeve is provided with a lower flange 23 on the outer circle of the lower side of the seat body. The upper end of the bearing abuts against the bottom end of the shaft sleeve, and the lower end abuts against the lower flange. The outer circle of the upper end of the sleeve is provided with an annular groove 22, and a snap ring is arranged in the annular groove, and the outer circle of the lower end of the sleeve is provided with an external thread 25, and a nut 29 is screwed on the external thread. Since the wire lifting base and the sleeve are connected by bearing rotation, the position of the wire lifting base can be adjusted by gently turning the wire lifting base so that the wire lifting groove corresponds to the overhead ground wire, while the operator can keep still, which is very convenient operate.

The sleeve 2 is provided with a ratchet 24 on the outer circle between the lower flange 23 and the external thread 25, and the wire handle 4 is covered on the ratchet. Steering pawl. The handle is overlaid on the rear side of the cylinder of the ratchet, and a steering pawl groove 41 is provided. The upper and lower sides of the steering pawl groove 41 are provided with a pin hole 42 and a pin shaft is installed, and the steering pawl is connected to the pin shaft. , by turning the steering pawl, the direction of the up and down movement of the sleeve can be changed, so the wire lifting seat 3 can move up or down, and it is easy to unload after the wire lifting is completed.

As shown in FIG. 2 and FIG. 3 , the hanging part 11 is curved upward in a circular arc, and a flat head 111 is provided at the head end of the hanging part, and a hanging hole is arranged on the flat head. The thread lifting rod is made of 40Cr, the material is quenched and tempered HB240~280, and the surface is blackened.

The suspension part of the universal wire lifter for overhead ground wires is connected to the pole tower with a steel wire sleeve. This connection method has wide versatility. The screw nut mechanism is used to lift the wires. When operating, directly put the overhead ground wires into the wire lifting base In the wire lifting groove of the wire lifting handle, turn the wire lifting handle to move the wire lifting seat upwards to achieve the purpose of transferring the force of the wire clamp. Among them, the thread lifting rod adopts a single-way screw design, and the lifting seat is fixed on the screw bearing, which has any directionality; the strength of the bearing can withstand the bending moment generated when the thread lifting seat is under force on one side, avoiding the "self-locking" phenomenon ;The thread lifting seat is designed on the top of the thread lifting handle, which can meet the needs of small stroke lifting.

Claims (5)

1. the general line lifter of overhead ground wire, comprise thread takeup lever, described thread takeup lever comprises the screw mandrel portion of below the suspension part on top and suspension part, the cylindrical side overcoat in described screw mandrel portion has sleeve, the top inner circle of described sleeve is provided with internal thread and is threaded with screw mandrel portion, it is characterized in that: line seat carried by the top cylindrical overcoat one of described sleeve, described line seat of carrying comprises pedestal, described pedestal inside is provided with inner cylinder body, bearing is provided with between described inner cylinder body and described sleeve, the side of described pedestal projects upwards and arranges one and carry the end of a thread, described carry that the end of a thread is provided with upward opening carry wire casing, what be connected with a band moving sleeve rotation on the downside of described sleeve carries line handle.

2. the general line lifter of overhead ground wire according to claim 1, it is characterized in that: the inner cylinder body upper and lower sides of described pedestal is respectively equipped with upper bearing (metal) and lower bearing, described inner cylinder body is provided with axle sleeve between upper bearing (metal) and lower bearing, the upper end inner circle of described inner cylinder body is provided with upper flange, described upper bearing (metal) is located between axle sleeve upper end and upper flange, described sleeve cylindrical on the downside of pedestal is provided with lower flange, and the upper end of described lower bearing abuts axle sleeve bottom, and lower end abuts lower flange.

3. the general line lifter of overhead ground wire according to claim 2, is characterized in that: the upper end cylindrical of described sleeve is provided with annular groove, is provided with snap ring in described annular groove, and the lower end cylindrical of described sleeve is provided with external screw thread, and described external screw thread is bolted with nut.

4. the general line lifter of overhead ground wire according to claim 3, it is characterized in that: described sleeve cylindrical between lower flange and external screw thread is provided with ratchet, described line handle jacket of carrying on ratchet, described in carry that line handle is provided with that swivel sleeve moves up and down direction turn to ratchet.

5. the general line lifter of overhead ground wire according to claim 1, is characterized in that: described suspension part upward side is that circular arc bends, and the head end of described suspension part is provided with flat head, and described flat head is provided with suppending hole.