A lifting tool for the stationary contact base of a GIS circuit breaker

Abstract

This utility model discloses a lifting fixture for a GIS circuit breaker stationary contact seat, including an arc plate. Fixed blocks are fixedly connected to the upper and lower edges of the outer side wall of the arc plate. A bidirectional screw rod is rotatably connected between the upper and lower fixed blocks. A pressure block and a push block are threadedly connected to the surface of the bidirectional screw rod. A telescopic groove is provided on the side wall of the arc plate above the push block, and a clamping block is slidably connected to the inner side of the telescopic groove. This utility model inserts the stationary contact seat between the two arc plates. During the downward insertion process, gravity drives the pressure block to move downward, thereby rotating the bidirectional screw rod, causing the push block to move upward, and pushing the clamping blocks to clamp the stationary contact seat from both sides. The heavier the weight, the tighter the clamping, achieving a locking effect and ensuring stability during lifting and installation. The entire process is convenient and quick, achieving dynamic locking without manual intervention, significantly improving operational efficiency.

Description

Technical Field

[0001] This utility model relates to the field of GIS circuit breaker technology, specifically a lifting tool for the stationary contact seat of a GIS circuit breaker. Background Technology

[0002] As a core device in high-voltage power systems, GIS circuit breakers require extremely high operational precision and safety during the installation and maintenance of their stationary contact bases. As a key component of the circuit breaker contact system, the stationary contact base must maintain precise alignment with the moving contact during assembly and ensure that it is not subject to mechanical damage or deformation during hoisting, maintenance, and replacement.

[0003] Existing hoisting fixtures for GIS circuit breaker stationary contact seats generally rely on manual operation of the fixing mechanism, which is cumbersome and inefficient. The clamping force is difficult to adjust adaptively according to the weight of the stationary contact seat, easily resulting in either loose or excessive clamping, leading to insufficient stability during hoisting. Therefore, a new technical solution is proposed to address this issue. Utility Model Content

[0004] The purpose of this utility model is to provide a lifting fixture for the static contact seat of a GIS circuit breaker, which solves the problem that the lifting fixtures mentioned in the background art generally rely on manual operation of the fixing mechanism, which is cumbersome and inefficient, and is prone to loosening or overtightening of the clamps, resulting in insufficient stability during the lifting process.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lifting fixture for a GIS circuit breaker stationary contact seat, comprising an arc plate, wherein fixed blocks are fixedly connected to the upper and lower edges of the outer side wall of the arc plate, and a bidirectional screw is rotatably connected between the upper and lower fixed blocks, wherein a pressure block and a push block are threadedly connected to the surface of the bidirectional screw, and a telescopic groove is provided on the side wall of the arc plate above the push block, wherein a clamping block is slidably connected to the inner side of the telescopic groove.

[0006] In this technical solution, the stationary contact seat is inserted between two arc plates. During the downward insertion process, gravity drives the pressure block to move downward, thereby driving the bidirectional screw to rotate, causing the push block to move upward, and pushing the clamping block to clamp the stationary contact seat from both sides. The heavier the weight, the tighter the clamping, achieving a locking effect and ensuring stability during hoisting and installation. The whole process is convenient and quick, and dynamic locking can be achieved without manual intervention, significantly improving operational efficiency.

[0007] Preferably, a sliding groove is provided on the side wall of the arc plate below the telescopic groove, one end of the pressure block passes through the sliding groove and is located inside the arc plate, and the front and rear side walls of the pressure block are in contact with the front and rear inner walls of the sliding groove, respectively.

[0008] Preferably, a side frame is fixedly connected to the top of the arc plate, a lifting block is vertically slidably connected to the surface of the side frame, an electric push rod is fixedly connected between the top of the lifting block and the inner top of the side frame, and an annular insert is fixedly connected between the left and right lifting blocks.

[0009] Preferably, the bottom end of the bidirectional lead screw passes through the lower fixing block and is rotatably connected to the fixing block through a bearing seat, and the bottom end of the bidirectional lead screw is fixedly connected to the rocker handle.

[0010] Preferably, a spring is fixedly connected between the clamping block and the inner wall of the telescopic groove, and the clamping block contacts and fits against the outer wall of the stationary contact seat body inserted into the inner side of the two arc plates.

[0011] Preferably, the two arc plates are connected by fixing bolts, and the two arc plates are of the same size.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model inserts the stationary contact seat between two arc plates. During the downward insertion process, gravity drives the pressure block to move downward, thereby driving the bidirectional screw to rotate, causing the push block to move upward and pushing the clamping block to clamp the stationary contact seat from both sides. The heavier the weight, the tighter the clamping, achieving a locking effect and ensuring stability during hoisting and installation. The whole process is convenient and quick, and dynamic locking can be achieved without manual intervention, significantly improving operational efficiency.

[0014] 2. This utility model sets an annular insert block above the arc plate. When the stationary contact seat is inserted, the electric push rod is activated to drive the lifting block and the annular insert block to move downward. The bottom of the annular insert block will be inserted into the gap between the stationary contact seat and the arc plate, correcting and maintaining the center position of the stationary contact seat, eliminating the risk of installation misalignment, ensuring precise alignment with the moving contact, greatly shortening maintenance time and reducing human error. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is an overall view of the present invention;

[0017] Figure 2 This is a schematic diagram of the side frame structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the inner structure of the arc plate of this utility model;

[0019] Figure 4 This is a partial enlarged view of point A of this utility model.

[0020] In the diagram: 1. Static contact seat body; 2. Arc plate; 201. Fixing bolt; 202. Slide groove; 203. Telescopic groove; 3. Side frame; 4. Electric push rod; 5. Lifting block; 6. Annular insert block; 7. Fixing block; 8. Bidirectional lead screw; 801. Handle; 9. Pressure block; 10. Push block; 11. Clamping block; 12. Spring. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description will further elaborate on them in conjunction with specific embodiments.

[0022] A lifting fixture for the stationary contact base of a GIS circuit breaker, see [link / reference]. Figures 1 to 4 The system includes two arc plates 2 connected by fixing bolts 201. Since the two arc plates 2 are the same size, during installation, they can be simply attached together and screwed together with the fixing bolts 201, making assembly and disassembly convenient. Fixing blocks 7 are fixedly connected to the upper and lower edges of the outer side wall of the arc plate 2. A double-acting screw 8 is rotatably connected between the upper and lower fixing blocks 7. A pressure block 9 and a push block 10 are threaded onto the surface of the double-acting screw 8. An expansion groove 203 is provided on the side wall of the arc plate 2 above the push block 10, and a clamping block is slidably connected to the inner side of the expansion groove 203. 11. When the stationary contact seat body 1 is inserted between the two arc plates 2, the stationary contact seat body 1 will press down on the pressure block 9 due to its neutral action. During the downward movement of the pressure block 9, the bidirectional screw 8 will rotate, so the push block 10 on the surface of the bidirectional screw 8 will rise, pushing the clamping block 11 in the upper telescopic groove 203 to move towards the inner side of the arc plate 2, thereby clamping the stationary contact seat body 1 from both sides. The heavier the body, the tighter the clamping, ensuring the stability during hoisting and installation. The whole process is convenient and quick, without the need for complicated fixing mechanisms, and is highly practical.

[0023] Specifically, such as Figure 4 As shown, a spring 12 is fixedly connected between the clamping block 11 and the inner wall of the telescopic groove 203. The clamping block 11 contacts and fits against the outer wall of the stationary contact seat body 1 inserted into the inner side of the two arc plates 2. When the push block 10 rises to the clamping block 11, the push block 10 moves and the spring 12 is stretched. When the push block 10 moves down, the spring 12 will pull the clamping block 11 back to its original position.

[0024] Furthermore, such as Figure 2As shown, a side frame 3 is fixedly connected to the top of the arc plate 2. A lifting block 5 is vertically slidably connected to the surface of the side frame 3. An electric push rod 4 is fixedly connected between the top of the lifting block 5 and the inner top of the side frame 3. An annular insert 6 is fixedly connected between the two lifting blocks 5. When the stationary contact seat body 1 is inserted, the electric push rod 4 is activated, driving the lifting block 5 to descend. The bottom of the annular insert 6 presents a protruding tip shape and is inserted into the gap between the stationary contact seat body 1 and the arc plate 2, thereby keeping the stationary contact seat body 1 in the center of the arc plate 2, eliminating the risk of installation offset, ensuring precise alignment with the moving contact, greatly shortening maintenance time and reducing human operation error. The side frame 3 is provided with mounting holes connected to the lifting mechanism. By installing the side frame 3 on the lifting mechanism, the entire device is lifted after the stationary contact seat body 1 is inserted and aligned, reaching the appropriate installation position for installation.

[0025] It is worth noting that, such as Figure 3 As shown, a sliding groove 202 is provided on the side wall of the arc plate 2 below the telescopic groove 203. One end of the pressure block 9 passes through the sliding groove 202 and is located inside the arc plate 2. The front and rear side walls of the pressure block 9 are in contact with the front and rear inner walls of the sliding groove 202, respectively. The sliding groove 202 plays a limiting role in the pressure block 9, so that the pressure block 9 can only maintain vertical movement. Similarly, the telescopic groove 203 plays a constraining role in the push block 10 and the clamping block 11.

[0026] It is worth noting that, such as Figure 3 As shown, the bottom end of the bidirectional lead screw 8 passes through the fixed block 7 below and is rotatably connected to the fixed block 7 through the bearing seat. The bottom end of the bidirectional lead screw 8 is fixedly connected to the crank handle 801. The outer surface of the bidirectional lead screw 8 is fixedly connected to the inner ring of the bearing seat. The outer ring of the bearing seat is fixedly connected to the inner wall of the fixed block 7, ensuring that the bidirectional lead screw 8 rotates normally without falling off. After the hoisting and installation of the stationary contact seat body 1 is completed, the two arc plates 2 are disassembled to separate them from the stationary contact seat body 1. The crank handle 801 is then rotated to drive the bidirectional lead screw 8 to rotate, so that the pressure block 9 and the push block 10 are reset.

[0027] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0028] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A lifting tool for GIS circuit breaker static contact seat, comprising an arc plate (2), characterized in that: The upper and lower edges of the outer side wall of the arc plate (2) are fixedly connected to fixing blocks (7), and a two-way screw rod (8) is rotatably connected between the upper and lower fixing blocks (7). The surface of the two-way screw rod (8) is threadedly connected to a pressure block (9) and a push block (10). The side wall of the arc plate (2) above the push block (10) is provided with a telescopic groove (203), and a clamping block (11) is slidably connected to the inner side of the telescopic groove (203).

2. The hanger tooling for a GIS circuit breaker stationary contact holder according to claim 1, wherein: The side wall of the arc plate (2) below the telescopic groove (203) is provided with a sliding groove (202). One end of the pressure block (9) passes through the sliding groove (202) and is located inside the arc plate (2). The front and rear side walls of the pressure block (9) are in contact with the front and rear inner walls of the sliding groove (202), respectively.

3. The lifting fixture for the stationary contact seat of a GIS circuit breaker according to claim 1, characterized in that: The top of the arc plate (2) is fixedly connected to a side frame (3), and a lifting block (5) is vertically slidably connected to the surface of the side frame (3). An electric push rod (4) is fixedly connected between the top of the lifting block (5) and the inner top of the side frame (3), and an annular insert (6) is fixedly connected between the left and right lifting blocks (5).

4. The lifting fixture for the stationary contact seat of a GIS circuit breaker according to claim 1, characterized in that: The bottom end of the bidirectional lead screw (8) passes through the fixed block (7) below and is rotatably connected to the fixed block (7) through a bearing seat. The bottom end of the bidirectional lead screw (8) is fixedly connected to the rocker handle (801).

5. The lifting fixture for the stationary contact seat of a GIS circuit breaker according to claim 1, characterized in that: A spring (12) is fixedly connected between the clamping block (11) and the inner wall of the telescopic groove (203). The clamping block (11) contacts and fits against the outer wall of the static contact seat body (1) inserted into the inner side of the two arc plates (2).

6. The lifting fixture for the stationary contact seat of a GIS circuit breaker according to claim 1, characterized in that: The two arc plates (2) are connected by fixing bolts (201), and the two arc plates (2) are the same size.

Images