CN205489271U - Transmission line aerial earth wire lifter - Google Patents

Abstract

The utility model discloses a lifter for an overhead ground wire of a power transmission line, which belongs to the technical field of power wiring. It mainly includes a rack. There are more than two lifting frames hinged on the top of the rack. There are more than two mounting holes at the end of the lifting frame. Lifting hooks are provided in the mounting holes. A sliding sleeve and a fixed base are provided on the rack. Both sides of the fixed base are respectively provided with card slots and gears, the central shaft of the gears is provided with a handle, the sliding sleeve is hinged with a support rod, and the support rod is hinged with the lifting frame; the lifting frame is an "n" type structure, and the lifting The hook is hinged to the lifting frame through bolts; the included angle a between the lifting frame and the vertical direction is 0-75°; the installation hole is arranged below the hinge hole of the lifting frame. The utility model has the advantages of simple structure, easy folding and carrying, convenient construction operation, easy adjustment of the inclination angle of the overhead ground line, improved work efficiency, and greatly reduced operation risks. The utility model is mainly used for lifting and maintenance of overhead ground wires.

Description

Transmission line overhead ground wire lifter

technical field

The utility model belongs to the technical field of power wiring, in particular to an overhead ground wire lifter for power transmission lines.

Background technique

The overhead ground wire is an important part of the high-voltage transmission line structure. Since the transmission line spans a wide area, it is easy to be struck by lightning during the thunderstorm season and cause interruption of power transmission, which has become one of the main reasons for power outages. The overhead ground wire is erected on the top of the high-voltage transmission line tower. In thunderstorm weather, the lightning channel is likely to hit the overhead ground wire first, so that the lightning current enters the ground to protect the normal power transmission of the wire. Therefore, installing the overhead ground wire can Reduce lightning accidents and improve the safety of line operation. The existing overhead ground wire lifting device has a simple structure, few stress points, narrow working surface, relatively cumbersome construction work, heavy conventional maintenance tools, great inconvenience caused by up and down transmission, and relatively many dangerous points , and there are fewer choices of stress points for the overhead ground wire support, and the cross arm is prone to deformation, causing equipment defects and potential safety hazards; at the same time, working at high altitude for too long will bring higher risks to the operation, and even cause casualties.

Contents of the invention

The purpose of this utility model is to overcome the above-mentioned defects, and provide a transmission line overhead ground wire lifter, which has a simple structure, is easy to fold and carry, and is convenient for construction and operation. job risk.

The overhead ground wire lifter for transmission lines includes a rack, the top of the rack is hinged with more than two lifting frames, the tail of the lifting frame is provided with more than two mounting holes, and a lifting hook is provided in the mounting hole, and the rack is mounted on the rack. A sliding sleeve and a fixed base are provided. The two sides of the fixed base are respectively provided with card slots and gears. The central axis of the gear is provided with a handle. The sliding sleeve is hinged with a support rod, which is hinged with the lifting frame.

Further, the lifting frame is an "n" type structure, and the lifting hook is hinged to the lifting frame through bolts.

Further, the included angle a between the lifting frame and the vertical direction is 0-75°.

Further, the mounting holes are arranged below the hinge holes of the lifting frame.

Compared with the prior art, the beneficial effects of the utility model are:

1. The structure of the utility model is simple, and the construction operation is convenient. The up and down movement of the rack can be easily realized by rotating the gear, thereby driving the sliding sleeve to move up and down, and the movement of the lifting frame is realized through the support rod, thereby completing the lifting operation of the ground wire, which is convenient and quick;

2. The utility model increases the stress point, enlarges the working surface, and realizes the adjustment of the inclination of the overhead ground line by adjusting the position of the lifting hook, which saves time and effort for workers;

3. The utility model is foldable, portable, easy to operate, safer and more reliable.

Description of drawings

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

Fig. 2 is a structural schematic diagram of the cooperation between the lifting hook and the lifting frame.

In the figure, 1. Lifting frame; 2. Fixed base; 3. Support rod; 4. Lifting hook; 5. Card slot; 6. Sliding sleeve; 7. Rack; 8. Gear; 9. Handle; 10. Installation hole.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1, the overhead ground wire lifter for transmission lines includes a rack 7, and more than two lifting frames 1 are hinged on the top of the rack 7, and more than two mounting holes 10 are provided at the tail of the lifting frame 1, and the mounting holes 10 There is a lifting hook 4 inside, a sliding sleeve 6 and a fixed base 2 are provided on the rack 7, and the two sides of the fixed base 2 are respectively provided with a card slot 5 and a gear 8, and a handle 9 is provided on the central axis of the gear 8. The sliding sleeve 6 is hinged with a support rod 3, and the support rod 3 is hinged with the lifting frame 1; the angle a between the lifting frame 1 and the vertical direction is 0-75°; the mounting hole 10 is arranged in the hinge hole of the lifting frame 1 below.

As shown in FIG. 2 , the lifting frame 1 is an "n" type structure, and the lifting hook 4 is hinged to the lifting frame 1 through bolts.

As shown in Figure 1, when the utility model is in use, it is hung on the transmission line tower through the slot 5 on the fixed base 2, the overhead ground wire sleeve is hung on the lifting hook 4, and it is rotated counterclockwise through the handle 9. The gear 8 drives the rack 7 to descend. Since the sliding sleeve 6 is blocked, the support rod 3 props up the lifting frame 1, and the overhead ground wire is lifted through the lifting hook 4, which saves time and effort, and facilitates maintenance of the overhead ground wire; When adjusting the inclination angle of the overhead ground wire, pass the lifting hook 4 on one side through the installation hole 10 to adjust the position. The utility model easily realizes the lifting and loosening of the overhead ground wire, is convenient to fold, is light to carry, and is safer and more reliable.

Claims (4)

1. A power transmission line overhead ground wire lifter is characterized in that: it comprises a rack (7), and the top of the rack (7) is hinged with more than two lifting frames (1), and the tail of the lifting frame (1) is provided with two More than two mounting holes (10), the mounting holes (10) are provided with a lifting hook (4), the rack (7) is provided with a sliding sleeve (6) and a fixed base (2), and the fixed base (2) The two sides of the two sides are respectively provided with draw-in slots (5) and gears (8), the central axis of the gears (8) is provided with a handle (9), the sliding sleeve (6) is hinged with support rods (3), and the support rods (3 ) is hinged with the lifting frame (1). 2. The lifter for overhead ground wires of transmission lines according to claim 1, characterized in that: the lifting frame (1) is an "n" type structure, and the lifting hook (4) is hinged to the lifting frame (1) through bolts. 3. The overhead ground wire lifter for transmission lines according to claim 1 or 2, characterized in that: the included angle a between the lifting frame (1) and the vertical direction is 0-75°. 4. The lifter for overhead ground wires of transmission lines according to claim 3, characterized in that: the installation hole (10) is arranged below the hinge hole of the lifting frame (1).