CN102263391A - Portable Overhead Ground Wire Riser - Google Patents

Abstract

The invention discloses a portable overhead ground wire lifter, which solves the problems of the existing overhead ground wire lifter for power transmission lines being inconvenient to carry, limited by the type of poles and towers, and the like. It includes a U-shaped bracket, a steel pipe, a ratchet wrench, and a steel wire rope. A hook is set in the middle of the upper part of the U-shaped bracket, and two rolling bearings are fixedly connected to the baffles on both sides of the U-shaped bracket. The steel pipe passes through the two rolling bearings horizontally; The steel pipe between the baffles on both sides of the bracket is fixedly connected with two ratchet wrenches with regulators, a small groove is opened near the two ends of the steel pipe, and the steel wire rope passes through the steel pipe through the small groove; the end of the steel wire rope is provided with a hook. The invention is not limited by the type of pole tower, and can be applied to various pole towers; it saves time and effort in operation, and is easy to operate; the ratchet wrench used is small in size and light in weight, can be put into a tool bag for easy carrying, and can be used by a single person Operation; reduce labor intensity, safety risks, and improve work efficiency.

Description

Portable Overhead Ground Wire Riser

Technical field:

The invention relates to a power transmission line maintenance tool, more precisely, to a load-bearing device for lifting overhead ground wires of a power transmission line.

current technology:

At present, the tools used to lift the overhead ground wire of the transmission line are more tools such as picker rod, hand chain chain hoist combination, DYQ12 type and DTG type overhead ground wire lifter. When using the hand-pull chain hoist combination tool to replace the suspension clamp of the overhead ground wire, due to the weight of the chain hoist itself and the length of the chain, etc., it is inconvenient to carry the upper and lower towers, and the safety risk of working above the live line is relatively high. The strength is also relatively high, and the operation efficiency is low; the DYQ12 type overhead ground wire lifter is easy to operate, relatively complicated in shape, heavy in itself, inconvenient to carry up and down the tower, and inconvenient to install on the tower, which increases the labor intensity and safety risks of live work , affecting work efficiency; DTG type overhead ground wire lifter has a relatively simple structure, beautiful appearance, relatively light weight, and easy operation, which can reduce the labor intensity of live work, safety risks and improve work efficiency, but it can only be used for self-supporting towers , cannot be used on concrete poles.

Invention content:

The purpose of the present invention is to overcome the disadvantages of the existing overhead ground wire hoisting equipment for transmission lines, such as inconvenient carrying, limited by the type of pole tower, high safety risk, high labor intensity and low operating efficiency, and provide a portable overhead ground wire lifter with a simple structure. Relatively light, easy to carry, easy to operate.

The present invention is characterized in that it includes a U-shaped bracket, a steel pipe, a ratchet wrench, and a steel wire rope. A hook is arranged in the middle of the upper part of the U-shaped bracket, and two rolling bearings are perforated and fixedly connected to the baffle plates on both sides of the U-shaped bracket. The steel pipe horizontally passes through the two Two rolling bearings; the steel pipe between the baffles on both sides of the U-shaped bracket is fixedly connected with two ratchet wrenches with regulators, and a small rope outlet groove is opened near the two ends of the steel pipe, and the steel wire rope passes through the steel pipe through the small rope outlet groove; A hook is provided at the end of the wire rope.

The small rope outlet groove is polished smoothly.

Both ends of the steel pipe are provided with fixing nuts and parallel caps.

Described hook has anti-lock hook.

As mentioned above, the present invention uses a ratchet wrench to replace the traditional force-bearing lifting tool in order to facilitate carrying and reduce the range of live work during the process of going up and down the tower. The ratchet wrench is equipped with an adjuster, which can not only lift the overhead ground wire Turn the regulator 180 degrees to lower the overhead ground wire; in order to ensure that the overhead ground wire only rises and does not fall back when the ratchet wrench is turned each time, two ratchet wrenches are set. When one ratchet wrench is turned, the other ratchet wrench Anti-locking can effectively control the downward gravity of the overhead ground wire itself, and prevent the ratchet wrench from turning with the middle steel pipe shaft to cause the overhead ground wire to fall back; In order to prevent the resistance between the baffles and steel pipes on the left and right sides of the U-shaped bracket, a rolling bearing is welded respectively; in order to prevent the overhead ground wire from slipping out of the hook when it is lifted under force, the hook is equipped with an anti-lock hook; in order to ensure that the lifting wire rope has Sufficient strength, and at the same time play a role of secondary protection for the hoisted overhead ground wire, hooks are set at both ends of the steel wire rope, and the overhead ground wire is lifted in the form of double hanging points; in order to reduce the force between the steel wire rope and the steel pipe Friction reduces the wear of the wire rope and prolongs the service life. The two outlet notches where the steel pipe passes through the wire rope are polished smooth; in order to prevent the tightened wire rope from slipping off the steel pipe, fixed nuts and union caps are set at both ends of the steel pipe.

Working principle: Use the double hanging point wire rope hook to hook the overhead ground wire of the transmission line, and tighten the wire rope by turning the handle of the ratchet wrench to lift the overhead ground wire upward.

Beneficial effects of the present invention: it is not limited by the type of pole and tower, and can be applied to various poles and towers; it saves time and effort in operation, and is easy to operate; the ratchet wrench used is small in size and light in weight, and can be put into a tool bag for easy carrying. And it can be operated by a single person; after repeated field tests and improvement and optimization, it can reduce labor intensity, safety risks and improve work efficiency.

Description of drawings:

Fig. 1 is a structural diagram of the present invention.

Fig. 2 is a side view of the connection between the U-shaped bracket and the steel pipe of the present invention.

Fig. 3 is a side view of the connection between the ratchet wrench and the steel pipe of the present invention. .

In the figure, 1. Hook, 2. U-shaped bracket, 3. Rolling bearing, 4. Fixed nut, 5. Combined cap, 6. Steel pipe, 7. Small groove for the rope, 8. Steel wire rope, 9. Hook, 10. Anti-lock hook, 11. ratchet wrench, 12. regulator.

Detailed ways:

As shown in Figure 1, the present invention comprises U-shaped support 2, steel pipe 6, ratchet wrench 11, steel wire rope 8, suspension hook 1 is set in the middle of the top of U-shaped support 2, so that hang on the crossarm of utility pole.

The baffles on both sides of the U-shaped bracket 2 are perforated and fixedly connected to the two rolling bearings 3, and the steel pipe 6 passes through the two rolling bearings 3 horizontally; The wrench 11 has a small groove 7 near the two ends of the steel pipe 6, and the steel wire 8 passes through the steel pipe 6 from the small groove 7; the end of the steel wire 8 is provided with a hook 9.

The ratchet wrench 11 has an adjuster 12, and when one ratchet wrench 11 is turned, the other ratchet wrench 11 is locked.

The small rope outlet groove 7 is polished smooth to reduce the wear of the steel wire rope 8.

The two ends of the steel pipe 6 are provided with fixed nuts 4 and parallel caps 5 to prevent the steel wire rope 8 wound on the steel pipe 6 from slipping.

The hook 9 is provided with an anti-lock hook 10 to prevent the overhead ground wire from slipping out of the hook when it is lifted under force.

Claims (4)

1. A portable overhead ground wire lifter, characterized in that it comprises U-shaped support (2), steel pipe (6), ratchet wrench (11), steel wire rope (8), and is arranged in the middle of the upper part of U-shaped support (2) The hook (1) is punched and fixedly connected to the two rolling bearings (3) on both side baffles of the U-shaped bracket (2), and the steel pipe (6) passes through the two rolling bearings (3) horizontally; The steel pipe (6) between the plates is fixedly connected with two ratchet wrenches (11) with regulators (12), and there is a small groove (7) at the position near the two ends of the steel pipe (6), and the steel wire rope (8) passes through the outlet The small rope groove (7) passes through the steel pipe (6); the end of the steel wire rope (8) is provided with a hook (9). 2. The portable overhead ground wire lifter as claimed in claim 1, characterized in that the two small rope outlet grooves (7) are polished smoothly. 3. The portable overhead ground wire lifter according to claim 1, characterized in that the two ends of the steel pipe (6) are provided with fixing nuts (4) and parallel caps (5). 4. The portable overhead ground wire lifter according to claim 1, characterized in that said hook (9) has an anti-lock hook (10).

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