CN206099159U - Electrified fixture of changing two clusters of straight line or two cluster insulators of strain insulator - Google Patents

Abstract

The utility model discloses a universal fixture for live replacement of straight double-string and tension-resistant double-string insulators, which comprises a connecting groove for a triangular connecting plate, a connecting hole for connecting the delta connecting plate and the fixture, a connecting hole for a tripod, and a slot for placing a screw rod , locking pin. The utility model has the advantages of reasonable design, simple structure, convenient use, safety and effectiveness, etc. It is easy to install when replacing the linear double-string insulator with electricity, and can be operated visually, accurately and fast. After the insulating pull plate is assembled, the pole tower is pulled up, and the wire is tightened and lifted, which saves manpower, reduces working time and workload, and saves working cost.

Description

Fixture for replacing straight double-string or tension-resistant double-string insulators while live

technical field

The utility model relates to a tool for replacing insulator strings of an overhead power transmission line, in particular to a universal jig for replacing straight double strings or tension double string insulators with electricity.

Background technique

During the long-term operation of overhead transmission lines, glass fiber reinforced plastic insulators will self-explode due to lightning strikes, pollution, strong electric fields, etc., and porcelain insulators will become low-value or zero-value insulators. At this time, the insulation strength of transmission lines becomes unsatisfactory for operation Requirements, it will cause the live wire to discharge to the tower, resulting in a short circuit to the ground of the line. Therefore, in order to meet the operation requirements of the line, it is necessary to replace the self-explosive insulator or the zero-value and low-value insulator. At present, two methods are mainly used for live replacement of linear double-string insulators: (1) Insulated three-string pulley block method. This method requires manpower to lift the wire, which can only be carried out when the line span is small and the load is light. Straight-line double-string insulators are often used between the two gears when the span is large or crossing, and the load is heavy, and it is difficult to tighten the wire manually; (2) replace it with a combination of linear screw and pull plate, In this method, the installation of fixtures and insulating pull plates must be carried out on-site under the cross-arm of the tower during operation. The staff will operate on the tower and cannot see the various components under the cross-arm of the tower. Work experience is required, the installation is laborious, time-consuming and labor-intensive, and there are hidden dangers.

Utility model content

The technical problem to be solved by the utility model is to overcome the above-mentioned defects, and provide a universal jig that can meet the requirements of tightening and lifting wires, and is convenient for installation, and can meet the needs of work. Requirements, while improving human-machine efficiency, saving time and effort.

In order to solve the above-mentioned technical problems, the fixture for live replacement of straight double-string or tension-resistant double-string insulators described in the utility model includes a board, and the board includes a connecting end of a connecting plate and a connecting end of a screw rod, and the wire The angle a between the connecting end of the rod and the upper edge of the connecting plate is 25-35 degrees. The end of the connecting end of the screw rod is provided with a screw groove for passing through the screw rod. The front and rear walls of the screw rod groove There are symmetrical card slots.

Further, a locking piece is provided at the card slot of the present invention.

The utility model is an improvement to the existing wing fixture for replacing the insulator strings. The connection end of the screw rod of the board card is inclined downward at a certain angle through improvement, so that the board card is installed on the triangular joint board of the straight double-string insulators and is horizontal to the pole tower. The clearance distance between the poles increases. On the one hand, when tightening or loosening the screw mandrel, the clearance distance can meet the requirements of the length of the screw mandrel. The operation is accurate and the speed is fast; with the jig described in the utility model, the screw rod and the insulating pull plate can be assembled on the ground in advance, the pole tower can be pulled up, and the wire can be tightened and lifted, which is convenient for installation and saves time and effort .

Beneficial effects of the utility model: due to the use of the above-mentioned structure, the utility model has the advantages of reasonable design, simple structure, convenient use, safety and effectiveness; the improved clamp has high safety, strong practicability, and saves manpower. The working time and workload are reduced, and the working cost is saved.

Description of drawings

Fig. 1 is the structural representation described in the utility model;

Fig. 2 is a schematic diagram of the connection between the utility model and adjacent components when in use.

detailed description

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

The universal jig for live replacement of straight double-string or tension-resistant double-string insulators described in the utility model includes a board card 1, and the board card 1 includes a connecting plate connecting end 2 and a screw connecting end 3, and the screw connecting end 3. The angle a between the upper edge of the connection end 2 of the connecting plate is 25-35 degrees. The end of the connection end 3 of the screw rod is provided with a screw groove 4 for passing through the screw rod. Symmetric card slots 5 are arranged on the rear wall.

Further, a locking piece 6 is provided at the slot 5 of the present invention.

Embodiment: The included angle a between the connecting end 3 of the screw rod of the board 1 described in the present utility model and the upper edge of the connecting end 2 of the connecting plate is 30 degrees, so that from the screw groove 4 at the end of the connecting end of the screw rod to the The clearance distance H between the cross arms 7 at the top of the tower increases. On the one hand, when tightening or loosening the screw rod 8, the clearance distance can meet the requirements of the length of the screw rod. On the other hand, the staff work on the cross arm of the tower tower. , the eyesight can be reached, and the operation can be seen with one's own eyes, the accuracy rate is high, and the speed is fast; the front and rear walls of the screw mandrel groove 4 described in the utility model are provided with symmetrical card slots 5, and the screw mandrel 8 can be connected with the insulating pull plate on the ground. 9 After assembly, the screw rod 8 passes through the screw rod slot 4, the nut staple 10 on the screw rod is stuck in the slot 5, and the tower is pulled up. Due to gravity, the screw nut staple 10 is stuck in the clamping slot In the slot 5, it will not slip off. For the sake of safety, a locking piece 6 is provided at the slot 5 to lock the staple 10. After the utility model is assembled, the wires are tightened and lifted, which is convenient for installation and saves time and effort. Live replacement of straight double-string insulators can also be replaced by the insulated three-pass pulley block method when the load is light, but when the load is heavy, the lifting wire cannot be tightened. At this time, the fixture described in the utility model is used , The combination of linear screw rod and insulating pull plate can solve the problem.

The above is only one embodiment of the present utility model, as long as the above-mentioned structure is used, it should fall into the protection scope of the present utility model.

Claims (2)

1. A fixture for replacing linear double-string or tension-resistant double-string insulators with electricity, including a board (1), characterized in that the board (1) includes a connection end (2) and a screw connection end (3), the angle a between the connecting end of the screw rod (3) and the upper edge of the connecting plate (2) is 25-35 degrees, and the end of the connecting end of the screw rod (3) is provided with a The screw rod groove (4) of the rod is provided with symmetrical card slots (5) on the front and rear walls of the screw rod groove (4). 2. The fixture for live replacement of straight double-string or tension-resistant double-string insulators according to claim 1, characterized in that a locking piece (6) is provided at the clamping slot (5).