Isolating switch clamp type moving contact maintenance auxiliary tool

Abstract

An auxiliary tool for maintenance of a clamp-type moving contact of an isolating switch includes a mounting assembly, a clamping assembly and an adjusting assembly; the mounting assembly includes a mounting block and a connecting rod, the clamping assembly includes a fixed clamping block and a movable clamping block, the fixed clamping block is connected to the second end of the connecting rod, a guide hole is provided on the movable clamping block, the connecting rod is slidably inserted into the guide hole, and the movable clamping block is located between the fixed clamping block and the mounting block, and a clamping groove is provided on the side of the movable clamping block adjacent to the fixed clamping block; the adjusting assembly includes a connected adjusting screw and a handle, and the adjusting screw is used to drive the movable clamping block to move away from or close to the fixed clamping block when rotating. In the above-mentioned auxiliary tool for maintenance of the clamp-type moving contact of the isolating switch, the clamping groove is used to push into the outside of the protruding portion of the moving contact of the clamp-type moving contact, so as to have a good limiting effect on the protruding portion, so that the auxiliary tool for maintenance of the clamp-type moving contact of the isolating switch can be accurately aligned with the moving contact during use, so that the moving contact is not easy to loosen.

Description

Technical Field

[0001] The invention relates to the technical field of electric power maintenance, in particular to a clamp-type movable contact maintenance auxiliary tool for an isolating switch. Background Art

[0002] At present, Guangzhou Power Supply Bureau Co., Ltd. manages more than 320 substations. A considerable number of these substations that have been put into operation are outdoor substations that have been in operation for many years. Outdoor equipment in outdoor substations is an important part of the asset management system of Guangzhou Power Supply Bureau Co., Ltd. Vertical semi-scissor-type disconnectors are a typical outdoor equipment, which are numerous and widely used. Due to the influence of hot and humid weather in southern my country, the presence of factors such as humidity, heat, aging, rust, and mechanical fatigue will reduce the service life of outdoor equipment, and may even cause poor contact and heating, mechanical refusal to move, mechanical malfunction, and cause electrical accidents in the power system and other malicious incidents. During the long-term operation and maintenance process, the maintenance personnel found that the pressure spring, a key component in the clamp-type moving contact of the 220kV vertical semi-scissor-type disconnector, had serious rust problems. Please refer to Figure 1 , which is a schematic diagram of a clamp-type moving contact of a vertical half-scissor type disconnector, the clamp-type moving contact 20 has 8 pressure springs 21 and two moving contacts 22, each moving contact 22 includes four moving contact pieces 22a, and each power contact piece 22 corresponds to a pressure spring 21. In addition, each moving contact also has a protrusion 22b. The original design of the pressure spring 21 has a total of 8, 4 on each side, a total of 2 sides, and each pressure spring is subjected to a force of 280N±10%. The consequence of severe corrosion of the pressure spring will make its force not within the range of 280N±10%, which may cause the clamp-type moving contact and the annular static contact to be not tightly pressed together, the contact resistance between the moving contact and the static contact is too large, and a long-term large current flowing through the contact surface will cause it to heat up, and then burn the contact surface, and finally burn the entire moving contact and static contact. One of the main reasons for the severe corrosion of the pressure spring is that the pressure spring is affected by the hot and humid weather in southern my country. Therefore, it is necessary to replace the pressure spring in time when it is corroded.

[0003] The replacement of the pressure spring requires the use of an auxiliary maintenance tool. However, the auxiliary maintenance tool in the prior art has the following problems during use: the auxiliary maintenance tool is not accurately aligned with the moving contact and is easy to loosen. Summary of the invention

[0004] Based on this, it is necessary to provide a clamp-type moving contact maintenance auxiliary tool for an isolating switch that can accurately align with the moving contact and prevent the moving contact from loosening.

[0005] A clamp-type moving contact maintenance auxiliary tool for an isolating switch, comprising a mounting assembly, a clamping assembly and an adjusting assembly;

[0006] The mounting assembly includes a mounting block and a connecting rod. The first end of the connecting rod is connected to the mounting block. An adjusting screw hole is formed in the mounting block.

[0007] The clamping assembly includes a fixed clamping block and a movable clamping block. The fixed clamping block is connected to the second end of the connecting rod. A guiding hole is formed in the movable clamping block. The connecting rod is slidably inserted through the guiding hole. The movable clamping block is flush with the fixed clamping block. The length direction of the movable clamping block is parallel to the length direction of the fixed clamping block. And the movable clamping block is located between the fixed clamping block and the mounting block. A clamping groove is formed in the side surface of the movable clamping block adjacent to the fixed clamping block.

[0008] The adjusting assembly includes an adjusting screw rod and a handle which are connected. The adjusting screw rod is screwed into the adjusting screw hole. The end of the adjusting screw rod away from the handle is rotatably connected to the movable clamping block. The handle is used to drive the adjusting screw rod to rotate. The adjusting screw rod is used to drive the movable clamping block to move in a direction away from or close to the fixed clamping block when rotating.

[0009] In one embodiment, a fixing hole is formed in the movable clamping block. The second end of the connecting rod is installed in the fixing hole.

[0010] In one embodiment, the adjusting assembly further includes a first limiting ring. The first limiting ring is fixedly sleeved on the adjusting screw rod. And the first limiting ring is located between the movable clamping block and the mounting block.

[0011] In one embodiment, the adjusting assembly further includes a second limiting ring. The second limiting ring is fixedly sleeved on the adjusting screw rod. And the second limiting ring is located between the handle and the mounting block.

[0012] In one embodiment, the handle includes a holding rod and a connecting block. The connecting block is connected to the adjusting screw rod. The holding rod is connected to one end of the connecting block.

[0013] In one embodiment, the connecting block is perpendicular to the adjusting screw rod.

[0014] In one embodiment, the holding rod is perpendicular to the connecting block.

[0015] In one embodiment, the length of the holding rod is 100 mm - 150 mm.

[0016] In one embodiment, the length of the holding rod is 130 mm.

[0017] In one embodiment, the clamping groove has a U-shaped cross-section.

[0018] In the above-mentioned auxiliary tool for maintenance of the clamp-type moving contact of the isolating switch, the adjusting screw is used to drive the movable clamp block to move in a direction away from or close to the fixed clamp block when rotating, so that the fixed clamp block and the movable clamp block can jointly clamp the moving contact of the clamp-type moving contact. Since the movable clamp block is provided with a clamping groove on the side adjacent to the fixed clamp block, the clamping groove is used to push into the outside of the protruding portion of the moving contact of the clamp-type moving contact, so that it can have a good limiting effect on the protruding portion, so that the auxiliary tool for maintenance of the clamp-type moving contact of the isolating switch can be accurately aligned with the moving contact during use, so that the moving contact is not easy to loosen. In addition, by providing an adjusting screw and a handle, the stroke can be fine-tuned, and the stroke can be self-maintained, which is easy to maintain and convenient to operate, thereby improving production efficiency and reducing safety risks. In addition, by providing a connecting rod, and the connecting rod is slidably inserted into the guide hole, so that it can play a certain guiding role on the movable clamp block, avoiding left and right shaking during the adjustment of the handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the clamp-type moving contact of a 220kV vertical semi-scissor-type disconnector;

[0020] Figure 2 It is a structural schematic diagram of a clamp-type movable contact maintenance auxiliary tool for an isolating switch according to an embodiment of the present invention;

[0021] Figure 3 It is a structural schematic diagram of a clamp-type movable contact maintenance auxiliary tool for an isolating switch according to an embodiment of the present invention;

[0022] Figure 4 The present invention is a schematic diagram of the use status of the clamp-type moving contact maintenance auxiliary tool for an isolating switch according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, in order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, and preferred embodiments of the present invention are given in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood. The present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited to the specific embodiments disclosed below. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the description of the present invention, the meaning of "several" is at least one, such as one, two, etc., unless otherwise clearly and specifically defined. It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention. The terms used herein are only for the purpose of describing specific implementation methods and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] For example, a clamp-type moving contact maintenance auxiliary tool for an isolating switch comprises a mounting assembly, a clamping assembly and an adjusting assembly; the mounting assembly comprises a mounting block and a connecting rod, the first end of the connecting rod being connected to the mounting block; an adjusting screw hole is provided on the mounting block; the clamping assembly comprises a fixed clamping block and a movable clamping block, the fixed clamping block is connected to the second end of the connecting rod, the movable clamping block is provided with a guide hole, the connecting rod is slidably penetrated into the guide hole, the movable clamping block is flush with the fixed clamping block, the length direction of the movable clamping block is parallel to the length direction of the fixed clamping block, and the movable clamping block is located between the fixed clamping block and the mounting block, and a clamping groove is provided on the side of the movable clamping block adjacent to the fixed clamping block; the adjusting assembly comprises a connected adjusting screw and a handle, the adjusting screw is screwed into the adjusting screw hole, the end of the adjusting screw away from the handle is rotatably connected to the movable clamping block, the handle is used to drive the adjusting screw to rotate, and the adjusting screw is used to drive the movable clamping block to move in a direction away from or close to the fixed clamping block when rotating. For another example, the adjusting screw rod passes through the adjusting screw hole and is screwed with the adjusting screw hole.

[0025] To further illustrate the above disconnector clamp type moving contact maintenance auxiliary tool, another example is, please refer to Figures 2 to 4 The auxiliary tool 10 for maintenance of the clamp-type moving contact of the isolating switch comprises an installation component 100, a clamping component 200 and an adjustment component 300. The installation component is connected to the clamping component, and the clamping component is connected to the adjustment component. The installation component is used for overall support, installation and guidance. The clamping component is used for clamping the moving contact of the clamp-type moving contact of the isolating switch. The adjustment component is used for tensioning or loosening the clamping component, and at the same time plays a role in adjusting the stroke of the clamping component.

[0026] See also Figures 2 to 4 The mounting assembly 100 includes a mounting block 110 and a connecting rod 120, wherein the first end of the connecting rod 120 is connected to the mounting block 110; and the second end of the connecting rod 120 is connected to the clamping assembly 200. An adjusting screw hole 111 is provided on the mounting block 110. The mounting block and the connecting rod play an integral supporting and mounting role. The connecting rod also plays a certain guiding role. For another example, a fixing hole is provided on the movable clamping block, and the second end of the connecting rod is installed in the fixing hole, so that it is easy to install. For another example, the second end of the connecting rod is fixed in the fixing hole, so that the connection is more firm. For another example, two connecting rods are provided, and the first ends of the two connecting rods are respectively connected to the two ends of the mounting block.

[0027] The clamping assembly 200 includes a fixed clamping block 210 and a movable clamping block 220. The fixed clamping block 210 is connected to the second end of the connecting rod 120. A guiding hole 221 is formed in the movable clamping block 220, and the connecting rod 120 slidably penetrates through the guiding hole 221. Or rather, the guiding hole of the movable clamping block slidably sleeves outside the connecting rod, and the movable clamping block can slide along the connecting rod through the guiding hole. Please refer to Figure 2 and Figure 3 , the movable clamping block 220 is flush with the fixed clamping block 210. The length direction of the movable clamping block 220 is parallel to the length direction of the fixed clamping block 210, and the movable clamping block 220 is located between the fixed clamping block 210 and the mounting block 110. A clamping groove 222 is formed in the side surface of the movable clamping block 220 adjacent to the fixed clamping block 210. Thus, please combine Figure 4 , the fixed clamping block 210 and the movable clamping block 220 jointly clamp the movable contact 22 of the clamp-type moving contact 20. The clamping groove 222 is used to abut against the outside of the protruding portion 22b of the movable contact of the clamp-type moving contact, so that it can have a good limiting effect on the protruding portion 22b, enabling the maintenance auxiliary tool for the clamp-type moving contact of the disconnector to be accurately aligned with the movable contact during use, so that the movable contact is not easily loosened. In addition, by providing the connecting rod and the connecting rod slidably penetrating through the guiding hole, thus, it can play a certain guiding role for the movable clamping block and avoid left and right shaking during the adjustment of the handle. In one embodiment, the clamping groove has a U-shaped cross-section, or rather, the clamping groove has a "U" - shaped cross-section, so that it can better play a good limiting role on the protruding portion 22b. Also, the shape of the clamping groove matches the shape of the protruding portion. Also, the shape of the clamping groove matches the shape of the protruding portion of the movable contact of the clamp-type moving contact. Thus, it can better play a good limiting role on the protruding portion 22b.

[0028] Please refer to Figures 2 to 4The adjustment assembly 300 includes an adjustment screw 310 and a handle 320 connected to each other. The adjustment screw 310 is screwed to the adjustment screw hole 111. The end of the adjustment screw 310 away from the handle 320 is rotatably connected to the movable clamp 220. For example, a support hole is also provided in the middle of the movable clamp. The end of the adjustment screw away from the handle is supported in the support hole, and the adjustment screw is rotatable relative to the support hole. For example, the end of the adjustment screw away from the handle is supported in the support hole by a bearing. The handle 320 is used to drive the adjustment screw 310 to rotate, or in other words, the handle is used to drive the adjustment screw 310 to rotate when the user holds it in his hand, or in other words, the handle is used to drive the adjustment screw to rotate under force. The adjustment screw 111 is used to drive the movable clamp 220 to move in a direction away from or close to the fixed clamp 210 when rotating. Thus, the adjusting screw 111 is used to drive the movable clamping block 220 to move away from or towards the fixed clamping block 210 when rotating, so as to tighten or loosen the clamping assembly and adjust the stroke of the clamping assembly.

[0029] It should be noted that the handle of the conventional maintenance auxiliary tool is short and not easy to apply force manually. In order to facilitate manual force application and increase the length of the handle, in one embodiment, the handle 320 includes a connecting block 321 and a holding rod 322, the connecting block 321 is connected to the adjusting screw 310, and the holding rod 322 is connected to one end of the connecting block 321. In this way, by setting the connecting rod and the holding rod, the handle can be lengthened, and by connecting the holding rod 322 to one end of the connecting block 321, the force arm is longer and more labor-saving. For another example, the connecting block is perpendicular to the adjusting screw. For another example, the holding rod is perpendicular to the connecting block. In this way, it can be more labor-saving. In one embodiment, the length of the holding rod is 100 mm-150 mm, so that the length is more suitable and convenient for maintenance personnel to operate. Preferably, the length of the holding rod is 130 mm. In this way, the length is more suitable and convenient for maintenance personnel to operate.

[0030] In order to prevent the movable clamp block from being damaged by the abutment against the mounting block during adjustment, in one embodiment, refer to Figure 2 and Figure 3 The adjustment assembly 300 further includes a first limiting ring 330, which is fixedly sleeved outside the adjustment screw 310, and the first limiting ring 330 is located between the movable clamping block 220 and the mounting block 110. Thus, by providing the first limiting ring 330, it is possible to prevent the movable clamping block from being damaged by the abutment with the mounting block during adjustment.

[0031] In order to avoid the handle and the mounting block from abutting against each other during adjustment, which would make the handle inconvenient to operate, in one embodiment, refer to Figure 2 and Figure 3 The adjustment assembly 300 further includes a second limiting ring 340, which is fixedly sleeved outside the adjustment screw 310 and is located between the handle 320 and the mounting block 110. In this way, it is possible to avoid the handle and the mounting block abutting during adjustment, which makes the handle inconvenient to operate.

[0032] In the above-mentioned auxiliary tool for maintenance of the clamp-type moving contact of the isolating switch, the adjusting screw is used to drive the movable clamp block to move in a direction away from or close to the fixed clamp block when rotating, so that the fixed clamp block and the movable clamp block can jointly clamp the moving contact of the clamp-type moving contact. Since the movable clamp block is provided with a clamping groove on the side adjacent to the fixed clamp block, the clamping groove is used to push into the outside of the protruding portion of the moving contact of the clamp-type moving contact, so that it can have a good limiting effect on the protruding portion, so that the auxiliary tool for maintenance of the clamp-type moving contact of the isolating switch can be accurately aligned with the moving contact during use, so that the moving contact is not easy to loosen. In addition, by providing an adjusting screw and a handle, the stroke can be fine-tuned, and the stroke can be self-maintained, which is easy to maintain and convenient to operate, thereby improving production efficiency and reducing safety risks. In addition, by providing a connecting rod, and the connecting rod is slidably inserted into the guide hole, so that it can play a certain guiding role on the movable clamp block, avoiding left and right shaking during the adjustment of the handle.

[0033] It can be understood that the traditional maintenance auxiliary tools are heavy, about 5 kilograms, and are not easy to carry. In order to reduce the weight of the maintenance auxiliary tools and make them easy to carry, in one embodiment, the overall material of the disconnector clamp-type moving contact maintenance auxiliary tool adopts a light steel material, so that the overall weight of the disconnector clamp-type moving contact maintenance auxiliary tool can be made lighter and easier to carry. For another example, the light steel material is Q235B, so that the overall weight can be reduced. In the case of the same size, the weight can be reduced by about half compared to traditional maintenance auxiliary tools. Thereby, the disconnector clamp-type moving contact maintenance auxiliary tool is lighter and easier to carry.

[0034] In order to ensure the free stroke of the switch clamp type moving contact maintenance auxiliary tool during use, that is, to control the clamping force of the fixed clamp block and the movable clamp block, in one embodiment, the first limit ring is screwed to the adjusting screw, and the second limit ring is screwed to the adjusting screw. In this way, by adjusting the relative distance between the first limit ring and the second limit ring, the free stroke of the switch clamp type moving contact maintenance auxiliary tool can be controlled, that is, the maximum clamping force of the fixed clamp block and the movable clamp block can be controlled to avoid the switch clamp type moving contact being damaged by the switch clamp type moving contact maintenance auxiliary tool during use. In one embodiment, a thin film pressure sensor is also provided on the side of the fixed clamp block adjacent to the movable clamp block, and the thin film pressure sensor is used to electrically connect to an external controller. In this way, by providing the thin film pressure sensor, the clamping force can be adjusted according to the pressure value during use to avoid the switch clamp type moving contact being damaged by the switch clamp type moving contact maintenance auxiliary tool during use. In order to facilitate holding the holding rod, in one embodiment, a holding sleeve is provided outside the holding rod, and the holding sleeve has a sponge structure, or in other words, the holding sleeve is made of sponge material, so that it is convenient to hold the holding rod and apply force.

[0035] It can be understood that when the end of the adjusting screw away from the handle is supported in the supporting hole by the bearing, the bearing is more likely to be damaged after a long time, thereby affecting the long-term use of the switch clamp type moving contact maintenance auxiliary tool. In one embodiment, the bearing includes an outer shaft, an inner shaft and a plurality of balls. The outer periphery and the inner shaft both have a circular ring structure. The outer side wall of the inner shaft is provided with a plurality of annular embedding grooves. The plurality of annular embedding grooves are arranged at intervals, and the center of the annular embedding groove coincides with the central axis of the inner periphery. The ball is embedded in the annular embedding groove, and the annular embedding groove matches the shape of the ball. The ball protrudes from the outer side wall of the inner shaft, and the annular embedding groove has a limiting effect on the ball. The ball will not fall off from the annular embedding groove, and the ball can roll relative to the annular embedding groove. A plurality of balls are embedded in each of the annular embedding grooves. The inner side wall of the outer periphery has a wear-resistant layer, and the material thereof is a wear-resistant material. For example, the wear-resistant layer is a high-strength carbon fiber material or a ceramic composite material. The wear-resistant layer is provided with a plurality of annular rolling grooves, and the opening positions of the annular rolling grooves correspond to the opening positions of the annular embedding grooves. The protruding parts of the balls protruding from the outer wall of the inner shaft in the annular embedding grooves are accommodated in the rolling shaft, so that the inner shaft can rotate relative to the outer shaft. By providing the wear-resistant layer on the inner wall of the outer shaft, the bearing can have better wear resistance, extend the service life of the bearing, and prevent the bearing from being easily damaged. For another example, the inner wall of the inner shaft is connected to the end of the adjusting screw away from the handle, and the outer wall of the outer shaft is connected to the inner wall of the support hole.

[0036] In the above-mentioned auxiliary tool for maintenance of the clamp-type moving contact of the isolating switch, the adjusting screw is used to drive the movable clamp block to move in a direction away from or close to the fixed clamp block when rotating, so that the fixed clamp block and the movable clamp block can jointly clamp the moving contact of the clamp-type moving contact. Since the movable clamp block is provided with a clamping groove on the side adjacent to the fixed clamp block, the clamping groove is used to push into the outside of the protruding portion of the moving contact of the clamp-type moving contact, so that it can have a good limiting effect on the protruding portion, so that the auxiliary tool for maintenance of the clamp-type moving contact of the isolating switch can be accurately aligned with the moving contact during use, so that the moving contact is not easy to loosen. In addition, by providing an adjusting screw and a handle, the stroke can be fine-tuned, and the stroke can be self-maintained, which is easy to maintain and convenient to operate, thereby improving production efficiency and reducing safety risks. In addition, by providing a connecting rod, and the connecting rod is slidably inserted into the guide hole, so that it can play a certain guiding role on the movable clamp block, avoiding left and right shaking during the adjustment of the handle.

[0037] It should be noted that the replacement of the pressure spring of the clamp-type moving contact of the vertical half-scissor type disconnector needs to rely on the maintenance auxiliary tool. However, the maintenance auxiliary tool in the prior art has many problems during use: first, the maintenance auxiliary tool is not accurately aligned with the moving contact and is easy to loosen; second, the handle of the maintenance auxiliary tool is short, which is not easy to apply force manually; third, the maintenance auxiliary tool itself is heavy, about 5 kilograms, and is not easy to carry. To this end, the present application provides a new disconnector clamp-type moving contact maintenance auxiliary tool, which is both light and practical, and can take into account the special structural process of the vertical half-scissor type disconnector clamp-type moving contact, accurately align with the moving contact, can fine-tune the stroke, and can self-maintain the stroke, easy to maintain, convenient to operate, thereby improving production efficiency and reducing safety risks. The disconnector clamp-type moving contact maintenance auxiliary tool provided by the present application can not only adapt to the influence of hot and humid weather in southern my country, but also fully take into account the special structural process of the vertical half-scissor type disconnector clamp-type moving contact, easy to reduce production costs, easy to maintain, thereby improving production efficiency and reducing safety risks. Specifically, it has the following advantages: lightweight design and easy maintenance; long handle design, easy to use and long service life; can be precisely aligned with the clamp-type moving contact; the main connecting rod can fine-tune the stroke, and can self-maintain the stroke. The maintenance aid tool provided in this application is designed with light steel and its own weight does not exceed 2.5 kg. The handle of the maintenance aid tool adopts an extended design, about 130 mm long, which is convenient for maintenance personnel to operate. The sliding part of the maintenance aid tool is designed with two connecting rods to prevent the sliding part from shaking left and right. The contact surface of the sliding part of the maintenance aid tool adopts a groove-shaped clamping groove, which can make the maintenance aid tool accurately aligned with the protruding part of the moving contact; the adjusting screw can fine-tune the stroke, and can self-maintain the stroke;

[0038] In the above-mentioned auxiliary tool for maintenance of the clamp-type moving contact of the isolating switch, the adjusting screw is used to drive the movable clamp block to move in a direction away from or close to the fixed clamp block when rotating, so that the fixed clamp block and the movable clamp block can jointly clamp the moving contact of the clamp-type moving contact. Since the movable clamp block is provided with a clamping groove on the side adjacent to the fixed clamp block, the clamping groove is used to push into the outside of the protruding portion of the moving contact of the clamp-type moving contact, so that it can have a good limiting effect on the protruding portion, so that the auxiliary tool for maintenance of the clamp-type moving contact of the isolating switch can be accurately aligned with the moving contact during use, so that the moving contact is not easy to loosen. In addition, by providing an adjusting screw and a handle, the stroke can be fine-tuned, and the stroke can be self-maintained, which is easy to maintain and convenient to operate, thereby improving production efficiency and reducing safety risks. In addition, by providing a connecting rod, and the connecting rod is slidably inserted into the guide hole, so that it can play a certain guiding role on the movable clamp block, avoiding left and right shaking during the adjustment of the handle.

[0039] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. It should be noted that "in one embodiment", "for example", "for example", etc. in this application are intended to illustrate the present application, rather than to limit the present application. The above-described embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, several variations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A clamp-type moving contact maintenance auxiliary tool for an isolating switch, characterized in that: Comprising: An installation component, the installation component includes an installation block and a connecting rod, the first end of the connecting rod is connected to the installation block; an adjustment screw hole is provided on the installation block; A clamping component, the clamping component includes a fixed clamping block and a movable clamping block, the fixed clamping block is connected to the second end of the connecting rod, a guiding hole is provided on the movable clamping block, the connecting rod slidably penetrates through the guiding hole, and the movable clamping block slides along the connecting rod through the guiding hole; the movable clamping block is flush with the fixed clamping block, the length direction of the movable clamping block is parallel to the length direction of the fixed clamping block, and the movable clamping block is located between the fixed clamping block and the installation block. A clamping groove is provided on the side surface of the movable clamping block adjacent to the fixed clamping block, and the clamping groove is used to be pushed outside the convex portion of the moving contact of the clamp type moving contact to limit the convex portion. The clamping groove matches the shape of the convex portion, and the clamping groove has a U-shaped cross section; An adjustment component, the adjustment component includes an adjustment screw rod and a handle which are connected. The adjustment screw rod is screwed to the adjustment screw hole, the end of the adjustment screw rod away from the handle is rotatably connected to the movable clamping block, the handle is used to drive the adjustment screw rod to rotate, and the adjustment screw rod is used to drive the movable clamping block to move away from or close to the fixed clamping block when rotating, so that the fixed clamping block and the movable clamping block jointly clamp the moving contact of the clamp type moving contact; a supporting hole is further provided in the middle of the movable clamping block, the end of the adjustment screw rod away from the handle is supported in the supporting hole, and the adjustment screw rod is rotatable relative to the supporting hole. The end of the adjustment screw rod away from the handle is supported in the supporting hole through a bearing; the bearing includes an outer shaft, an inner shaft and a plurality of balls. Both the outer shaft and the inner shaft have an annular structure. A plurality of annular embedding grooves are provided on the outer side wall of the inner shaft. The plurality of annular embedding grooves are arranged at intervals, and the center of the annular embedding groove coincides with the central axis of the inner shaft. The balls are embedded in the annular embedding grooves, and the annular embedding groove matches the shape of the balls. The balls protrude from the outer side wall of the inner shaft, and the annular embedding groove has a limiting effect on the balls, so that the balls will not fall off from the annular embedding groove, and the balls can roll relative to the annular embedding groove. A plurality of the balls are embedded in each annular embedding groove, and the inner side wall of the outer shaft has a wear-resistant layer; The overall material of the maintenance auxiliary tool for the disconnector clamp type moving contact is made of light steel material; A thin film pressure sensor is further provided on the side surface of the fixed clamping block adjacent to the movable clamping block. The thin film pressure sensor is used to be electrically connected to an external controller to adjust the clamping force according to the pressure value during use through the thin film pressure sensor; The adjustment component also includes a first limiting ring, the first limiting ring fixing sleeve is placed outside the adjustment screw, and the first limiting ring is located between the movable clamping block and the mounting block; the adjustment component also includes a second limiting ring, the second limiting ring fixing sleeve is placed outside the adjustment screw, and the second limiting ring is located between the handle and the mounting block.

2. The disconnector clamp type moving contact maintenance auxiliary tool according to claim 1 is characterized in that: The movable clamp block is provided with a fixing hole, and the second end of the connecting rod is installed in the fixing hole.

3. The disconnector clamp type moving contact maintenance auxiliary tool according to claim 1 is characterized in that: The handle comprises a gripping rod and a connecting block, wherein the connecting block is connected to the adjusting screw, and the gripping rod is connected to one end of the connecting block.

4. The disconnector clamp type moving contact maintenance auxiliary tool according to claim 3 is characterized in that: The connecting block is perpendicular to the adjusting screw.

5. The disconnector clamp type moving contact maintenance auxiliary tool according to claim 4 is characterized in that: The holding rod is perpendicular to the connecting block.

6. The disconnector clamp type moving contact maintenance auxiliary tool according to claim 5 is characterized in that: The length of the gripping rod is 100 mm-150 mm.

7. The disconnector clamp type moving contact maintenance auxiliary tool according to claim 6 is characterized in that: The length of the gripping rod is 130 mm.

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