CN-122026249-A - Electric pole insulator replacement mechanism and replacement method

CN122026249ACN 122026249 ACN122026249 ACN 122026249ACN-122026249-A

Abstract

The invention belongs to the field of strategic power transmission line maintenance, and particularly relates to an electric pole insulator replacement mechanism and an electric pole insulator replacement method, wherein the electric pole insulator replacement mechanism comprises a bracket, the front end of the bracket is fixedly connected with a cross arm, the front side of the cross arm is connected with one end of an insulator string, and the other end of the insulator string is connected with a cladding sleeve; the cable is characterized by further comprising a cable, wherein a positioning block is fixedly sleeved outside the cable and used for being in sleeved fit with the wrapping sleeve, the support is provided with a pulling mechanism, the output end of the pulling mechanism is used for being connected with the positioning block, and the cable can be actively pulled before replacement by arranging the pulling mechanism on the support and connecting the output end of the pulling mechanism to the positioning block on the cable, so that the tension of a wire originally born by the insulator string is transferred to the support and the pulling mechanism. The insulator string is in a loose state during disassembly without resisting wire tension, so that disassembly difficulty and physical consumption of operators are greatly reduced, and operation safety is improved.

Inventors

ZHENG HANJIE
MA BAO
FENG YUBO
ZHOU XIAOLEI
BAI HE
HUA BING
WANG HONGTAO
LIN XIAOPENG
JIA YUTAO
LIU HONGTAO

Assignees

国网河南省电力公司登封市供电公司
国家电网有限公司

Dates

Publication Date: 20260512
Application Date: 20251231

Claims (9)

1. The utility model provides a pole insulator replacement mechanism, includes support (1), support (1) front end fixed connection cross arm (2), cross arm (2) front side connect insulator chain (3) one end, insulator chain (3) other end connect cladding cover (4), still include cable (5), the outside cover of cable (5) is established and is fixed with locating piece (51), locating piece (51) are used for cup jointing cooperation with cladding cover (4), be provided with traction mechanism on support (1), traction mechanism's output is used for connecting locating piece (51).
2. The pole insulator replacing mechanism according to claim 1, wherein a winding mechanism (6) is arranged at the bottom of the support (1), the winding mechanism (6) comprises a winding support (61), the winding support (61) is fixedly connected with the support (1), a winding roller (62) is rotatably arranged on the winding support (61), a driving mechanism (63) is fixedly connected to the support (1) on the side of the winding support (61), the output end of the driving mechanism (63) is fixedly connected with the winding roller (62), the top of the support (1) is fixedly connected with a pulley support (64), a fixed pulley (65) is rotationally connected with the pulley support (64), one end of a pull rope (66) is fixedly connected with the winding roller (62), and the other end of the pull rope (66) bypasses the fixed pulley (65) and is fixedly connected with a drag hook (67).
3. The pole insulator replacing mechanism according to claim 2, wherein the top of the positioning block (51) is fixedly connected with a hanging lug (52) matched with the drag hook (67).
4. The pole insulator replacing mechanism according to claim 2, wherein the support (1) is a triangular support body, the triangular support body comprises a bottom rod and a side rod fixedly connected with two sides of the bottom rod respectively, the tops of the two side rods are fixedly connected to form a triangular vertex angle, the front end of the triangular support body is fixedly connected with the pulley support (64), the top of the bottom rod of the triangular support body is fixedly connected with the winding support (61), and the triangular support body is fixedly connected to one side of the top of the pole.
5. The pole insulator replacement mechanism of claim 2, wherein two sides of the front end of the bracket (1) are fixedly connected with a first angle iron (11) respectively, one side of the cross arm (2) is abutted against the first angle iron (11), the other side of the cross arm (2) is abutted against a second angle iron (12), and the first angle iron (11) and the second angle iron (12) are fixedly connected through a connecting piece, so that the cross arm (2) is clamped and fixed.
6. The pole insulator replacing mechanism according to claim 2, wherein the front side of the cross arm (2) is fixedly connected with a mounting frame (21), and the mounting frame (21) is connected with one end of the insulator string (3) through a connecting piece.
7. A pole insulator changing mechanism according to claim 3, wherein the positioning block (51) is an L-shaped block, the cable (5) is fixed in the L-shaped block, and two ends of the cable (5) respectively extend out from two ends of the L-shaped block.
8. The pole insulator replacement mechanism of claim 7, wherein the cladding sleeve (4) comprises a sleeve body (41) with an opening at one side, a cover plate (42) is hinged to one side of the opening of the sleeve body (41), a limiting cavity for a positioning block (51) is formed between the sleeve body (41) and the cover plate (42) after the sleeve body (41) is buckled, a channel for extending out of two ends of a cable (5) is formed in the limiting cavity, a first locking plate (43) is fixedly connected to the side of the cover plate (42), a second locking plate (44) matched with the first locking plate (43) is fixedly connected to the sleeve body (41), and an avoidance groove for extending out of and separating a hanging lug (52) from the sleeve body (41) is formed in the top of the sleeve body (41).
9. A method for replacing an insulator replacing mechanism for an electric pole according to any one of claims 1 to 8, wherein the method comprises the steps of: s1, fixing a support (1) on the top of an electric pole, connecting an insulator string (3) on the support (1) through a cross arm (2), connecting the insulator string (3) with a cable (5), installing a detachable structure which is convenient to detach on the insulator string (3), and installing the cable (5) in the detachable structure; s2, installing a pulling mechanism on the bracket (1); S3, when the insulator string (3) is replaced, the output end of the command pulling mechanism is connected to the cable (5), and then the command pulling mechanism applies pulling force towards the bracket (1) to the insulator string (3) until the insulator string (3) body is loosened; S4, detaching the separable structure, and detaching the insulator chain (3) from the cross arm (2); S5, replacing the new insulator string (3), and fixing the new insulator string (3) with the cross arm (2) and the cable (5) respectively; S6, the pulling force of the pulling mechanism is reduced until the insulator string (3) is tightened, the output end of the pulling mechanism is loosened, and the output end of the pulling mechanism is separated from the cable (5).

Description

Electric pole insulator replacement mechanism and replacement method Technical Field The invention belongs to the field of power transmission line maintenance, and particularly relates to a mechanism and a method for replacing an electric pole insulator. Background The pole insulator is a key insulating component of an overhead power line, is easily damaged due to factors such as aging, lightning stroke and pollution after being exposed in an outdoor environment for a long time, and needs to be replaced in time to ensure safe and stable operation of a power grid. At present, the traditional method for replacing the insulator string of the electric pole mainly has two major problems that firstly, the insulator string is replaced after the connection between the insulator string and the cross arm and the connection between the insulator string and the wires are released by the worker climbing the pole through line power failure, and the method directly influences the power supply reliability and causes economic loss. Secondly, live working, such as using an insulating bucket arm vehicle or adopting a ground potential and intermediate potential working method, has extremely high requirements on the skills of operators, is high in safety risk, and is severely restricted by environmental factors such as topography, weather and the like. In the prior art, some auxiliary replacing devices exist for simplifying the process, however, the devices focus on providing a mounting platform or auxiliary lifting insulators, a mechanism capable of transferring and bearing the load of a wire in advance and controllably is generally lacking, when the replacing device is used, the tension of a cable still directly acts on an insulator string to be detached, so that the disassembling is difficult, an operator is required to use a special tool to perform high-strength wire winding and unwinding operation, time and labor are wasted, the operation complexity and the safety risk are increased under the electrified environment, and in addition, the connecting structure of the wire and the tail end of the insulator string is usually permanently fixed (such as a strain clamp), so that the disassembling is complicated and the quick replacing is not facilitated. Therefore, how to design an insulator replacement mechanism that is safe, efficient, and can significantly reduce the operation intensity and risk is a technical problem to be solved in the art. Disclosure of Invention In order to solve the problems, the invention provides a mechanism and a method for replacing an electric pole insulator. The electric pole insulator replacing mechanism comprises a support 1, wherein the front end of the support 1 is fixedly connected with a cross arm 2, the front side of the cross arm 2 is connected with one end of an insulator chain 3, the other end of the insulator chain 3 is connected with a cladding sleeve 4, a cable 5 is further included, a positioning block 51 is fixedly sleeved outside the cable 5, the positioning block 51 is used for being in sleeved fit with the cladding sleeve 4, a pulling mechanism is arranged on the support 1, and the output end of the pulling mechanism is used for being connected with the positioning block 51. Further, a winding mechanism 6 is arranged at the bottom of the support 1, the winding mechanism 6 comprises a winding support 61, the winding support 61 is fixedly connected with the support 1, a winding roller 62 is rotatably arranged on the winding support 61, a driving mechanism 63 is fixedly connected to the support 1 on the side of the winding support 61, the output end of the driving mechanism 63 is fixedly connected with the winding roller 62, the top of the support 1 is fixedly connected with a pulley support 64, a fixed pulley 65 is rotatably connected with the pulley support 64, the winding roller 62 is fixedly connected with one end of a pull rope 66, and the other end of the pull rope 66 bypasses the fixed pulley 65 and is fixedly connected with a drag hook 67. Further, the top of the positioning block 51 is fixedly connected with a hanging lug 52 matched with the drag hook 67. Further, the support 1 is a triangle frame body, the triangle frame body comprises a bottom rod and a side rod fixedly connected with two sides of the bottom rod respectively, the tops of the two side rods are fixedly connected to form a triangle vertex angle, the front end of the triangle frame body vertex angle is fixedly connected with a pulley support 64, the top of the bottom rod of the triangle frame body is fixedly connected with a winding support 61, and the triangle frame body is fixedly connected with one side of the top of the electric pole. Further, the two sides of the front end of the bracket 1 are fixedly connected with a first angle iron 11 respectively, one side of the cross arm 2 is abutted against the first angle iron 11, the other side of the cross arm 2 is abutted against a second angle iron 12, and the