A substation switch cabinet circuit breaker trolley crank handle

Abstract

The invention discloses a substation switch cabinet circuit breaker trolley crank handle, comprising a power arm, a main handle arranged perpendicularly to the power arm is integrally formed at one end of the power arm, a power assist handle arranged perpendicularly to the power arm is connected to the other end of the power arm, an extension arm arranged perpendicularly to the power arm is slidably connected to the middle of the power arm, a quadrangular connecting column is integrally formed at the end of the extension arm, a connecting sleeve for being sleeved on an isolating switch is connected to the quadrangular connecting column, a quadrangular inner hole matching the quadrangular connecting column is provided in one end of the connecting sleeve, and a multi-faceted inner hole matching the shape of the isolating switch is provided in the other end of the connecting sleeve; the invention is equipped with a plurality of types and models of connecting sleeves, so that only one set of the device of the application is needed to complete the opening and closing operations of the isolating switches of the switch cabinet circuit breaker trolley of different types and kinds; an annular magnet is provided at the end of the extension arm, so as to avoid the occurrence of the handle falling phenomenon.

Description

Technical Field

[0001] The invention belongs to the technical field of electric appliances, and in particular relates to a trolley crank handle for a switch cabinet circuit breaker of a transformer substation. Background Art

[0002] There are many types and quantities of 10kV-35kV switch cabinet circuit breaker trolleys in substations. When operating these circuit breaker trolleys, operators are required to operate the disconnectors one by one on site through manual cranks. With the implementation of the "Three Collections and Five Majors" of State Grid Corporation, the substation operation and maintenance management mode has become an important means to achieve intensive management of power grids. However, with the continuous expansion and development of the power grid, the equipment in the substation is also constantly expanding, technically upgraded, and annually calibrated and pre-tested, and the switching operations of operators have also doubled. Due to the different models and manufacturers of switch cabinets in substations, and the operating holes of some high-voltage switch cabinets are not designed according to national standards, various types of operating cranks are required in substations, which are mainly reflected in the axial holes at one end of the horizontal crank body. Some are hexagonal holes, some are quadrilateral holes, and some are slot-type. This results in the need for operators to carry multiple cranks for operation. If an operating tool is missed, it is necessary to go back to the toolbox to get it again, which wastes time and energy, affects operating efficiency, increases power outage time, and affects economic benefits. Secondly, the different types of existing substation switch cabinets lead to the simultaneous configuration of several types of trolley cranks, resulting in high costs. In addition, most of the existing trolley cranks are "Z" type, and the operation and maintenance personnel often lose the handle during the process of shaking the trolley in and out. This will not only greatly reduce the efficiency of the switching operation, but may also cause minor personal injuries in serious cases. Secondly, the switch cabinet has greater resistance when opening and closing, or it is more difficult for the operator to operate, and often requires two people to work at the same time. Summary of the invention

[0003] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art and to propose a substation switch cabinet circuit breaker trolley crank handle; the technical solution adopted to achieve the above-mentioned purpose is:

[0004] A substation switch cabinet circuit breaker trolley crank handle comprises a power arm, a main handle arranged perpendicularly to the power arm is integrally formed at one end of the power arm, a power assist handle arranged perpendicularly to the power arm is connected to the other end of the power arm, an extension arm arranged perpendicularly to the power arm is slidably connected to the middle of the power arm, a four-sided connecting column is integrally formed at the end of the extension arm, a connecting sleeve for being sleeved on an isolating switch is connected to the four-sided connecting column, a four-sided inner hole matching with the four-sided connecting column is provided in one end of the connecting sleeve, and a multi-sided inner hole matching with the shape of the isolating switch is provided in the other end of the connecting sleeve.

[0005] Preferably, a rotating drum is rotatably connected to the end of the extending arm, and an annular magnet is sleeved and fixed on the rotating drum. When the connecting sleeve is sleeved on the isolating switch, the annular magnet is adsorbed on the surface of the switch cabinet.

[0006] Preferably, the rotating drum is replaced by a bearing, the end of the extending arm is fixedly connected to the inner ring of the bearing, and the annular magnet is sleeved and fixed on the outer ring of the bearing.

[0007] Preferably, a connecting sleeve is provided at the other end of the extending arm opposite to the quadrangular connecting column, and the power arm is located in the connecting sleeve and is slidably connected to the connecting sleeve.

[0008] Preferably, a plurality of positioning balls are evenly embedded on the power arm along the axial direction of the power arm, and a positioning groove for cooperating with the positioning balls is provided on the inner wall of the connecting sleeve.

[0009] Preferably, the power-assisting handle and the power arm are detachably connected, a multi-faceted mounting hole is provided in the power-assisting handle, and a multi-faceted column matching the multi-faceted mounting hole is provided at the other end of the power arm.

[0010] Preferably, a positioning ball is embedded in the polygonal column, and a positioning groove for cooperating with the positioning ball is provided on the inner wall of the polygonal mounting hole.

[0011] Preferably, a positioning ball is embedded in the quadrangular connecting column, and a positioning groove for cooperating with the positioning ball is provided on the inner wall of the quadrangular inner hole.

[0012] Preferably, a hand grip sleeve is rotatably mounted on both the main handle and the power assist handle.

[0013] Preferably, an insulating sheath is provided on the hand-held sleeve.

[0014] The beneficial effects of the present invention are as follows: (1) the present invention is equipped with multiple types and models of connecting sleeves, so that only one set of the present invention is needed to complete the opening and closing operations of the disconnecting switches of the switch cabinet circuit breaker trolleys of different types and kinds;

[0015] (2) The annular magnet set at the end of the extended arm is always adsorbed on the surface of the switch cabinet during use to prevent the handle from falling off;

[0016] (3) The power arm and the extension arm can slide relative to each other to change position, which realizes the effective force arm adjustment and solves the problem that the ordinary Z-shaped crank cannot complete a full rotation when the disconnector is close to the ground;

[0017] (4) With the cooperation of the main handle and the power handle, the large torque and small torque isolating switches can be opened and closed. The overall operation is simple and easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural explosion diagram of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings.

[0021] like Figure 1 The illustrated embodiment is a substation switch cabinet circuit breaker trolley crank handle, comprising a power arm 7, a main handle 6 vertically arranged on one end of the power arm 7 is integrally formed, a power assist handle 2 vertically arranged on the power arm 7 is connected to the other end of the power arm 7, an extension arm 10 vertically arranged on the power arm 7 is slidably connected to the middle of the power arm 7, a quadrangular connecting column 13 is integrally formed on the end of the extension arm 10, a connecting sleeve for being sleeved on the isolating switch is connected to the quadrangular connecting column 13, a quadrangular inner hole 15 matching with the quadrangular connecting column is provided in one end of the connecting sleeve, and a multi-faceted inner hole 16 matching with the shape of the isolating switch is provided in the other end of the connecting sleeve.

[0022] In order to further prevent the handle from falling off, a rotating drum 11 is rotatably connected to the end of the extending arm, and a ring magnet 12 is fixedly mounted on the rotating drum 11. When the connecting sleeve is mounted on the isolating switch, the ring magnet 12 is adsorbed on the surface of the switch cabinet.

[0023] The rotating drum can also be replaced by a bearing, the end of the extending arm 10 is fixedly connected to the inner ring of the bearing, and the annular magnet is sleeved and fixed on the outer ring of the bearing.

[0024] A connecting sleeve 8 is provided at the other end of the extension arm 10 opposite to the quadrangular connecting column 13, and the power arm 7 is located in the connecting sleeve 8 and is slidably connected to the connecting sleeve 8. In order to achieve a pre-positioning effect, a plurality of positioning balls 9 are evenly embedded on the power arm 7 along the axis direction of the power arm 7, and a positioning groove (not shown in the internal figure) for cooperating with the positioning balls 9 is provided on the inner wall of the connecting sleeve 8.

[0025] Since the power handle 2 is sometimes needed and sometimes not, the connection between the power handle 2 and the power arm 7 is set to be a detachable connection, a multi-faceted mounting hole is provided in the power handle 2, and a multi-faceted column 3 matching the multi-faceted mounting hole is provided at the other end of the power arm 7. In order to achieve the pre-positioning effect, a positioning ball 4 is embedded on the multi-faceted column 3, and a positioning groove for cooperating with the positioning ball 4 is provided on the inner wall of the multi-faceted mounting hole (not shown in the internal figure).

[0026] At the same time, a positioning ball 14 may be embedded in the quadrangular connecting column 13 , and a positioning groove (not shown in the internal figure) for cooperating with the positioning ball 14 is provided on the inner wall of the quadrangular inner hole 15 .

[0027] In order to facilitate hand-grip rotation and insulation, a hand-grip sleeve 5, 1 is rotatably provided on both the main handle 6 and the power-assisting handle 2; an insulating sheath is sleeved on the hand-grip sleeve 5, 1.

[0028] When the present invention is used, firstly, a suitable connecting sleeve is selected according to the type of the switch cabinet circuit breaker trolley, one end of the connecting sleeve's four-sided inner hole 15 is sleeved on the four-sided connecting column 13, and the connecting sleeve is pre-positioned and fixed by the cooperation of the positioning ball 14 and the positioning groove, and the connecting sleeve is sleeved on the disconnector, and the annular magnet 12 is adsorbed on the surface of the switch cabinet; when the torque does not need to be too large, there is no need to install the power handle 2, and the disconnector opening and closing operation can be completed by holding the grip sleeve 5 and shaking the power arm 7; during use, the size of the effective force arm can be changed by changing the position of the power arm 7 in the up and down directions to adjust the optimal force.

[0029] When a larger torque is required, the power handle 2 is fixed on the polygonal column 3. At this time, the main handle 6 and the power handle 2 can be operated by two hands or two people at the same time to complete the opening and closing operations of the gate.

[0030] On the other hand, when the isolating switch is close to the ground, the ordinary Z-shaped crank cannot complete a full rotation. However, in the present application, the extension arm 10 can be rotated a full circle by changing the position of the power arm 7 in the connecting sleeve 8 in the up and down directions.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A substation switch cabinet circuit breaker trolley crank handle, characterized in that: It comprises a power arm, a main handle arranged perpendicularly to the power arm is integrally formed at one end of the power arm, a power handle arranged perpendicularly to the power arm is connected to the other end of the power arm, an extension arm arranged perpendicularly to the power arm is slidably connected to the middle of the power arm, a quadrangular connecting column is integrally formed at the end of the extension arm, a connecting sleeve for sleeve on the isolating switch is connected to the quadrangular connecting column, a quadrangular inner hole matching with the quadrangular connecting column is arranged in one end of the connecting sleeve, and a multi-faceted inner hole matching with the shape of the isolating switch is arranged in the other end of the connecting sleeve; A rotating drum is rotatably connected to the end of the extending arm, and a ring magnet is fixedly mounted on the rotating drum. When the connecting sleeve is mounted on the isolating switch, the ring magnet is adsorbed on the surface of the switch cabinet. A connecting sleeve is provided at the other end of the extending arm opposite to the quadrangular connecting column, and the power arm is located in the connecting sleeve and is slidably connected to the connecting sleeve; A plurality of positioning balls are evenly embedded on the power arm along the axis direction of the power arm, and a positioning groove for cooperating with the positioning balls is provided on the inner wall of the connecting sleeve; The power-assisting handle and the power arm are detachably connected, a multi-faceted mounting hole is arranged in the power-assisting handle, and a multi-faceted column matching the multi-faceted mounting hole is arranged at the other end of the power arm.

2. The substation switch cabinet circuit breaker trolley crank handle according to claim 1, characterized in that: The rotating cylinder is replaced by a bearing, the end of the extending arm is fixedly connected to the inner ring of the bearing, and the annular magnet is sleeved and fixed on the outer ring of the bearing.

3. The substation switch cabinet circuit breaker trolley crank handle according to claim 1, characterized in that: A positioning ball is embedded on the polygonal column, and a positioning groove for cooperating with the positioning ball is provided on the inner wall of the polygonal mounting hole.

4. The substation switch cabinet circuit breaker trolley crank handle according to claim 1, characterized in that: A positioning ball is embedded on the four-sided connecting column, and a positioning groove for cooperating with the positioning ball is provided on the inner wall of the four-sided inner hole.

5. The substation switch cabinet circuit breaker trolley crank handle according to any one of claims 1 to 4, characterized in that: Hand grip sleeves are rotatably arranged on the main handle and the power-assisting handle.

6. The substation switch cabinet circuit breaker trolley crank handle according to claim 5, characterized in that: An insulating sheath is sleeved on the hand-held sleeve.

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