CN210838693U

CN210838693U - Auxiliary device for replacing double-string insulator connecting hardware fittings in electrified manner

Info

Publication number: CN210838693U
Application number: CN201922279035.4U
Authority: CN
Inventors: 龙林
Original assignee: Guangdong Hengweitong Power Technology Co ltd
Current assignee: Guangdong Hengweitong Power Technology Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-06-23
Anticipated expiration: 2029-12-17

Abstract

The utility model discloses an auxiliary device for changing double-string insulator link fitting with electricity, the link fitting is used for fixing one end of two suspension insulator strings on a cross arm piece of a tower through an L-shaped yoke plate, the two suspension insulator strings are respectively connected on two sides of the L-shaped yoke plate, the auxiliary device comprises a mounting bracket, a lead screw driving piece and a detachable connecting piece, the mounting bracket is used for fixedly mounting the lead screw on the cross arm piece above the link fitting to be changed, the lower end of the lead screw is connected with the L-shaped yoke plate through the detachable connecting piece, and the lead screw driving piece is used for driving the lead screw to move up and down; when the auxiliary device with the structure is adopted to replace the link fitting, the suspension insulator string is suspended on the screw rod through the L-shaped connecting plate and still in a tensioning state of normal work, so that power failure is not needed, the maintenance efficiency of the link fitting can be effectively improved, and the use is convenient.

Description

Auxiliary device for replacing double-string insulator connecting hardware fittings in electrified manner

Technical Field

The utility model relates to a power transmission line link fitting maintenance of equipment technical field especially relates to an auxiliary device that is used for changing two cluster insulator link fittings with electricity.

Background

When a 500kV ultrahigh voltage transmission line crosses a valley, a river or a heavy ice region, the comprehensive load of a lead is large and exceeds the allowable load range of a single string of suspension insulators, and under the condition, a double string of suspension insulators are combined for use. The double-string suspension insulator is generally installed on both sides of an L-shaped yoke plate (the L-shaped yoke plate is used for assembling multiple strings of suspension insulator strings, fixing split conductors and insulator strings, fixing the split conductors and insulator strings and connecting multiple pull wires in parallel) on an overhead power line and a substation, and needs to be replaced in time when the connecting hardware fittings between the L-shaped yoke plate and a cross arm of an iron tower are worn, deformed and the like in the operation process. At present, the method of power failure maintenance is mainly adopted for replacing the connecting hardware fittings, the height of the L-shaped connecting plate is lifted by using the rope sleeve and the lever block, the load of the connecting hardware fittings is further transferred, and finally the damaged connecting hardware fittings are replaced. However, the operation method needs line power failure, the operation process is complex, and multiple operators are needed to cooperate. Therefore, in order to reduce the time for power failure maintenance, an auxiliary installation tool needs to be designed to complete the live replacement of the link fitting.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the not enough of above-mentioned calculation problem and providing an auxiliary device that is used for changing two insulator chain link fittings with electricity to realize the link fitting of changing two insulator chain with electricity.

In order to realize the above-mentioned purpose, the utility model discloses an auxiliary device for changing two cluster insulator link fittings with electricity, link fitting is used for fixing two insulator chain's that dangle one end on the cross arm spare of pylon through an L type yoke plate, two the insulator chain that dangles connects respectively the both sides of L type yoke plate, auxiliary device includes installing support, lead screw driving piece and can dismantle the connecting piece, installing support be used for with lead screw fixed mounting is waiting to change link fitting top on the cross arm spare, the lower extreme of lead screw passes through can dismantle the connecting piece with L type yoke plate connects, the lead screw driving piece is used for the drive the lead screw reciprocates.

Compared with the prior art, the utility model discloses an auxiliary device for electrified two cluster insulator link fittings of changing, according to two cluster suspension insulator equipment methods, adopt the detachable connecting piece to drag L type yoke plate, mention and release L type yoke plate through the elevating movement of lead screw, when needing to change link fitting, will fix on the cross arm piece directly over link fitting according to the support, then be connected lower extreme and L type yoke plate of lead screw through the detachable connecting piece, then operate the lead screw driving piece, make the lead screw rotate and rise, thereby transfer the load on the link fitting to the lead screw, then can change link fitting, after the change work is accomplished, operate the lead screw driving piece once more, make the lead screw reverse motion, thereby release the lifting of L type yoke plate, again with the load from the lead screw on the link fitting after the change; therefore, when the connecting fitting is replaced by the auxiliary device with the structure, the suspension insulator string is suspended on the screw rod through the L-shaped connecting plate and still in a tensioning state of normal work, power failure is not needed, the maintenance efficiency of the connecting fitting can be effectively improved, and the use is convenient.

Drawings

Fig. 1 is a schematic view of a state of the auxiliary device according to an embodiment of the present invention.

Fig. 2 is a schematic view of a state of use of the auxiliary device according to another embodiment of the present invention.

Fig. 3 is a perspective view of the detachable connector of fig. 1.

Fig. 4 is a schematic plan view of the detachable connector of fig. 2.

Fig. 5 is a schematic perspective view of an L-shaped yoke plate according to an embodiment of the present invention.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

As shown in fig. 1, fig. 2 and fig. 5, the utility model discloses an auxiliary device for changing two insulator link fittings with electricity, link fitting 20 is used for fixing two one ends that hang insulator chain 22 on the cross arm piece 23 of pylon through an L type yoke plate 21, two insulator chain 22 that hang are connected respectively in the both sides of L type yoke plate 21, auxiliary device includes installing support 10, lead screw 11, lead screw driving piece 12 and detachable connections 13, installing support 10 is used for with lead screw 11 fixed mounting on treating the cross arm piece 23 of changing link fitting 20 top, the lower extreme of lead screw 11 is connected with L type yoke plate 21 through detachable connections 13, lead screw driving piece 12 is used for driving lead screw 11 and reciprocates.

The auxiliary device in the above embodiment adopts the detachable connecting piece 13 to drag the L-shaped yoke plate 21 according to the assembly mode of the double-suspension insulator string 22, and lifts and releases the L-shaped yoke plate 21 through the lifting motion of the screw rod 11. When the link fitting 20 needs to be replaced, the mounting bracket 10 is fixed on the cross arm piece 23 right above the link fitting 20, then the lower end of the screw rod 11 is connected with the L-shaped link plate 21 through the detachable connecting piece 13, then the screw rod driving piece 12 is operated, the screw rod 11 is made to rotate and rise, so that the load on the link fitting 20 is transferred to the screw rod 11, then the link fitting 20 can be replaced, after the replacement work is completed, the screw rod driving piece 12 is operated again, the screw rod 11 is made to move reversely, so that the lifting of the L-shaped link plate 21 is released, and the load is transferred from the screw rod 11 to the replaced link fitting 20 again; therefore, when the connecting fitting 20 is replaced by the auxiliary device with the structure, the suspension insulator string 22 is suspended on the screw rod 11 through the L-shaped connecting plate 21 and still in a tensioning state of normal work, power failure is not needed, the maintenance efficiency of the connecting fitting 20 can be effectively improved, and the use is convenient. For the screw rod driving piece 12, a motor drive can be adopted, and a rocker drive can also be adopted, and the screw rod driving piece 12 in the embodiment is preferably a rocking handle of the screw rod 11 in consideration of convenience and economy of use.

Since the pulling force of the two suspension insulator strings 22 to the L-shaped yoke plate 21 is distributed on both sides of the L-shaped yoke plate 21, in order to improve the load and balance of the auxiliary device, it is preferable that the lead screws 11 are provided in two pieces, and the two lead screws 11 are respectively used to be installed on opposite sides of the link fitting 20.

Since the L-shaped yoke plate has two installation modes of a vertical line direction and a parallel line direction, two structures of the detachable connecting member 13 are disclosed below.

Corresponding to the L-shaped yoke plate 21 installed in the vertical line direction, as shown in fig. 1 and fig. 3, the detachable connector 13 includes a clamping plate 130, a clamping groove 131 having a thickness equivalent to that of the L-shaped yoke plate 21 is disposed on the clamping plate 130, the clamping groove 131 is used for being clamped with the L-shaped yoke plate 21, connecting portions 132 are disposed on two sides of the clamping groove 131, and the two lead screws 11 are respectively connected with the two connecting portions 132 on the clamping plate 130. During the use, go into the draw-in groove 131 on the cardboard 130 on the L type yoke plate 21 for cardboard 130 drags L type yoke plate 21, then is connected with two lead screws 11 through two connecting portion 132 on the cardboard 130. The connecting portion 132 in this embodiment is a screw hole, and the lower end of the screw rod 11 is provided with a thread matched with the screw hole, so that the screw rod is convenient to disassemble and assemble.

Corresponding to the L-shaped yoke plate 21 installed in parallel to the line direction, as shown in fig. 2, 4 and 5, the detachable connecting member 13 includes connecting blocks 133 respectively connected to the lower ends of the two lead screws 11, and the connecting blocks 133 are connected to the L-shaped yoke plate 21 by positioning screws 134. Since the access hole 210 is reserved on the L-shaped yoke plate 21, in this embodiment, the connecting block 133 and the L-shaped yoke plate 21 can be fixed together by the cooperation of the positioning screw 134 and the access hole 210. Preferably, the connecting block 133 is an L-shaped hanging member, so that when the connecting block 133 and the L-shaped yoke plate 21 are fixed together, the connecting block 133 can provide a certain supporting force for the L-shaped yoke plate 21. In this embodiment, the connecting block is provided with a screw hole 135 for connecting with the screw rod.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims

1. The utility model provides an auxiliary device for changing two cluster insulator link fittings with electricity, the link fitting is used for fixing two insulator chain's that dangle one end on the cross arm spare of pylon through an L type yoke plate, two the insulator chain that dangles connects respectively the both sides of L type yoke plate, a serial communication port, auxiliary device includes installing support, lead screw driving piece and can dismantle the connecting piece, the installing support be used for with lead screw fixed mounting is waited to change the link fitting top on the cross arm spare, the lower extreme of lead screw passes through can dismantle the connecting piece with L type yoke plate is connected, the lead screw driving piece is used for the drive the lead screw reciprocates.

2. The auxiliary device for the live replacement of the double-string insulator connection fitting according to claim 1, wherein the screw rod driving piece is a screw rod rocking handle.

3. The auxiliary device for the live-line replacement of the double-string insulator connection fitting according to claim 1, wherein the two lead screws are arranged, and the two lead screws are respectively used for being mounted on two opposite sides of the connection fitting.

4. The auxiliary device for the live replacement of the double-string insulator connection fitting according to claim 3, wherein the detachable connecting piece comprises a clamping plate, a clamping groove having a thickness corresponding to the thickness of the L-shaped connecting plate is formed in the clamping plate, the clamping groove is used for being clamped with the L-shaped connecting plate, connecting portions are formed on two sides of the clamping groove, and the two lead screws are respectively connected with the two connecting portions on the clamping plate.

5. The auxiliary device for the live-line replacement of the double-string insulator connecting fitting according to claim 4, wherein the connecting portion is a screw hole, and a thread matched with the screw hole is arranged at the lower end of the screw rod.

6. The auxiliary device for the live replacement of the double-string insulator connection fitting according to claim 3, wherein the detachable connecting piece comprises connecting blocks respectively connected with the lower ends of the two lead screws, and the connecting blocks are connected with the L-shaped yoke plate through positioning screws.

7. The auxiliary device for replacing the double-string insulator connecting fitting in the electrified manner as claimed in claim 6, wherein the connecting block is an L-shaped hanging piece.