A tool suitable for replacing a mechanism core of a 220kV open-type circuit breaker

Abstract

The utility model relates to electrical replacement tool field, concretely is a kind of tool for the replacement of 220kV open type circuit breaker mechanism core. It includes mobile platform, door type crane and cross arm;Mobile platform is used to support and move mechanism core;Cross arm is lifted by door type crane, and cross arm includes connecting frame and two groups of connecting components symmetrically arranged at the both ends of connecting frame, and connecting component includes connecting piece vertically arranged at the lateral outer end of connecting frame, two fixed parts respectively arranged at the top end and bottom end of connecting piece and the lifting block arranged at the top of upper fixed part. The utility model can realize the quick replacement of mechanism core by the aid of lever balance principle, avoids the removal, hoisting and acceptance test process of pole, reduces operation risk and maintenance cost, and improves maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electrical replacement tooling, and in particular to a tooling suitable for replacing the core mechanism of a 220kV open circuit breaker. Background Technology

[0002] Currently, when replacing the operating mechanism core of a 220kV open-type substation circuit breaker, it is necessary to first recover the SF6 gas inside the pole, then use a crane to remove the pole from the mechanism frame, and replace the mechanism and frame (including secondary components) together. After replacement, the pole is reinstalled, and SF6 gas is filled to the rated pressure for acceptance tests, such as circuit resistance testing, leak detection testing, micro-water testing, and AC withstand voltage testing. However, this operation requires significant manpower and resources, involves a wide power outage area when using a crane, carries high operational risks, and has a long power outage period. Utility Model Content

[0003] The purpose of this utility model is to address the problems existing in the background technology by proposing a tooling suitable for replacing the mechanism core of a 220kV open circuit breaker. By utilizing the lever balance principle, it can achieve quick replacement of the mechanism core, avoiding the removal, hoisting, and acceptance testing of the pole, reducing operational risks and maintenance costs, and improving maintenance efficiency.

[0004] The technical solution of this utility model is a tooling suitable for replacing the core mechanism of a 220kV open circuit breaker, including a moving platform, a gantry crane, and a crossarm; the moving platform is used to support and move the core mechanism; the crossarm is lifted by the gantry crane, and the crossarm includes a connecting frame and two sets of connecting components horizontally symmetrically arranged at both ends of the connecting frame. The connecting components include a connector vertically arranged at the outer horizontal end of the connecting frame, two fixing components respectively arranged at the top and bottom of the connector, and a lifting block arranged at the top of the upper fixing component.

[0005] Preferably, the connecting frame includes horizontally distributed crossbars and an inverted V-shaped bar at the bottom of the crossbars.

[0006] Preferably, both the connector and the fastener are L-shaped corner pieces.

[0007] Preferably, the fastener has two through holes arranged horizontally and symmetrically.

[0008] Preferably, the lifting block has a lifting hole.

[0009] Preferably, the gantry crane includes a support frame, a slide rail horizontally mounted on the top of the support frame, a hand-operated hoist horizontally slidably mounted on the slide rail, and a lifting rope connected to the bottom of the hand-operated hoist. The lifting rope is distributed in an inverted V shape, with hooks at both ends, and the two hooks are respectively hooked at two lifting holes.

[0010] Compared with existing technologies, this utility model has the following beneficial technical effects: Utilizing the lever balance principle, this utility model enables quick replacement of the mechanism core, avoiding the removal, hoisting, and acceptance testing of the pole, reducing operational risks and maintenance costs, improving maintenance efficiency, and shortening replacement time. When replacing the mechanism core, a gantry crane, crossbeam, and moving platform are used to balance and interchange the positions of the old and new mechanism cores. The new mechanism core is moved into the mechanism housing, aligned with the circuit breaker, and securely connected. Finally, the moving platform supports the old mechanism core from below, allowing the old and new mechanism cores to be removed from the crossbeam. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model when it is applied to the replacement of the mechanism's core; Figure 2 for Figure 1 A partial top view of the structure; Figure 3 This is a schematic diagram of the internal structure of the mechanism box; Figure 4 This is a schematic diagram of the crossarm structure.

[0012] Reference numerals: 1. Gantry crane; 11. Support frame; 12. Slide rail; 13. Hand chain hoist; 14. Lifting rope; 2. Crossbeam; 21. Connecting frame; 22. Connecting piece; 23. Fixing piece; 231. Through hole; 24. Lifting block; 241. Lifting hole. Detailed Implementation

[0013] like Figures 1-4 As shown in the figure, this embodiment proposes a tooling for replacing the core mechanism of a 220kV open circuit breaker, which includes a mobile platform, a gantry crane 1, and a crossarm 2.

[0014] The moving platform is used to support and move the mechanism's core. The bottom of the moving platform has wheels to enable movement, and the top of the moving platform can horizontally support the mechanism's core.

[0015] The gantry crane 1 includes a support frame 11, a slide rail 12 horizontally mounted on top of the support frame 11, a hand-operated hoist 13 horizontally slidably mounted on the slide rail 12, and a lifting rope 14 connected to the bottom of the hand-operated hoist 13. The hand-operated hoist 13 is specifically connected to the middle of the lifting rope 14, which forms an inverted V-shape when lifted. The support frame 11 has rollers at its bottom, enabling the gantry crane 1 to move. Hooks are provided at both ends of the lifting rope 14, ensuring balance on both sides when lifting the crossbeam 2 and the mechanism core.

[0016] like Figure 1 and Figure 4As shown, the crossbeam 2 is lifted by the gantry crane 1. The crossbeam 2 includes a connecting frame 21 and two sets of connecting components horizontally symmetrically arranged at both ends of the connecting frame 21. The connecting components include a connecting piece 22 vertically arranged at the outer horizontal end of the connecting frame 21, two fixing pieces 23 respectively arranged at the top and bottom of the connecting piece 22, and a lifting block 24 arranged on the top of the upper fixing piece 23. The entire structure of the crossbeam 2 is symmetrically designed so that the two mechanism cores can be evenly fixed at both ends in the horizontal direction.

[0017] Specifically, the connecting frame 21 includes horizontally distributed crossbars and an inverted V-shaped bar at the bottom of the crossbars. Both the connecting member 22 and the fixing member 23 are L-shaped corner pieces. A total of four fixing members 23 are arranged in a rectangular pattern, with the inner angles of the fixing members 23 corresponding to the inner angles of the rectangle. The top and bottom ends of the connecting member 22 are respectively connected to the inner sides of two L-shaped fixing members 23. Two through holes 231 are horizontally symmetrically arranged on the fixing members 23, located on their vertical surfaces, for mounting the mechanism core. The lifting block 24 has lifting holes 241. Two hooks at both ends of the lifting rope 14 are hooked into the two lifting holes 241, allowing the mechanism core to be lifted via the crossbeam 2.

[0018] This embodiment utilizes the lever balance principle to achieve quick replacement of the mechanism core, avoiding the removal, hoisting, and acceptance testing of the pole, reducing operational risks and maintenance costs, improving maintenance efficiency, and shortening replacement time. When replacing the mechanism core, first move the gantry crane 1 to the side of the mechanism box where the old mechanism core is to be replaced. The new mechanism core is supported by a moving platform, which is also moved to the side of the mechanism box, ensuring the height of the new mechanism core matches the height of the old mechanism core in the mechanism box. The new and old mechanism cores are connected through the through holes 231 on both sides of the crossarm 2. Next, disconnect the old mechanism core from the circuit breaker. Hook the two hooks at both ends of the lifting rope 14 into the lifting holes 241 of the two lifting blocks 24, and slightly tighten the lifting rope 14 using the hand-operated hoist 13. Then, remove the moving platform below the new mechanism core; at this point, the new mechanism core is suspended, and the new and old mechanism cores remain balanced. Next, the new and old mechanism cores are slowly moved outwards via gantry crane 1, and their positions are swapped by rotating 180 degrees. Then, they are slowly moved in the opposite direction to move the new mechanism core into the mechanism box, align it with the circuit breaker, and secure it tightly. Finally, the new and old mechanism cores are removed from the crossarm 2 by a moving platform supporting the old mechanism core.

[0019] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A tooling suitable for replacing the core mechanism of a 220kV open circuit breaker, characterized in that, include: The mobile platform supports and moves the mechanism's core. Gantry crane (1); The crossbeam (2) is lifted by the gantry crane (1) and includes a connecting frame (21) and two sets of connecting components arranged horizontally and symmetrically at both ends of the connecting frame (21). The connecting components include a connector (22) arranged vertically at the outer horizontal end of the connecting frame (21), two fixings (23) respectively arranged at the top and bottom of the connector (22), and a lifting block (24) arranged at the top of the upper fixing (23).

2. The tooling for replacing the mechanism core of a 220kV open circuit breaker according to claim 1, characterized in that, The connecting frame (21) includes horizontally distributed crossbars and an inverted V-shaped bar at the bottom of the crossbars.

3. The tooling for replacing the mechanism core of a 220kV open circuit breaker according to claim 1, characterized in that, Both the connector (22) and the fastener (23) are L-shaped corner pieces.

4. The tooling for replacing the mechanism core of a 220kV open circuit breaker according to claim 1, characterized in that, Two through holes (231) are horizontally symmetrically arranged on the fastener (23).

5. The tooling for replacing the mechanism core of a 220kV open circuit breaker according to claim 1, characterized in that, The lifting block (24) has a lifting hole (241).

6. The tooling for replacing the mechanism core of a 220kV open circuit breaker according to claim 5, characterized in that, The gantry crane (1) includes a support frame (11), a slide rail (12) horizontally set on the top of the support frame (11), a hand chain hoist (13) horizontally slidably set on the slide rail (12), and a hoisting rope (14) connected to the bottom of the hand chain hoist (13). The hoisting rope (14) is distributed in an inverted V shape, with hooks at both ends. The two hooks are hooked at two lifting holes (241) respectively.

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