Vacuum circuit breaker convenient to disassemble

Abstract

The utility model relates to the technical field of vacuum circuit breakers, and discloses a vacuum circuit breaker convenient to disassemble, which comprises a mounting base, a vacuum circuit breaker main body is arranged above the mounting base, and a connecting shell is arranged at the bottom end of the vacuum circuit breaker main body. According to the vacuum circuit breaker convenient to disassemble, a worker rotates the grip to drive the double-sided threaded rod to rotate, the double-sided threaded rod is in threaded connection with the two sets of internal thread moving blocks, and the internal thread moving blocks are in sliding fit with the mounting frame, so that the two sets of internal thread moving blocks move on the double-sided threaded rod oppositely or reversely; when the fixing clamping plate moves towards the connecting shell, the connecting shell can be clamped and fixed to the mounting frame, the vacuum circuit breaker body is fixed, when disassembly is needed, the grip is rotated reversely, the fixing clamping plate is made to be far away from the connecting shell, the vacuum circuit breaker body can be taken down conveniently, operation is easy and convenient, and the disassembly efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum circuit breakers, in particular to a vacuum circuit breaker that is convenient to disassemble. Background Technique

[0002] The vacuum circuit breaker gets its name because the arc extinguishing medium and the insulating medium in the contact gap after arc extinguishing are both high vacuum. It has many significant advantages, such as small volume, light weight, and being suitable for frequent operation. Due to these characteristics, the vacuum circuit breaker is widely used in the distribution network field with a high popularity.

[0003] The existing technical authorization announcement number CN221977819U patent document provides a vacuum circuit breaker that is convenient to disassemble. In this utility model, the positioning block is placed into the positioning groove. At this time, the clamping plate will enter the T-shaped groove. Then, clockwise rotating the hexagon socket knob can drive the threaded column to rotate. By using the screw drive between the threaded column and the nut seat, the nut seat can be driven to move. When the nut seat moves forward, at this time, the push block can drive the push block to descend under the elastic force of the compression spring reset, so that the clamping plate can descend. And during the descending process of the clamping plate, the guiding post can be used for guiding the clamping plate, and further, the clamping plate can be driven to rotate and contact the bottom wall of the T-shaped groove during the descending process, so that the positioning block can be clamped, and thus the installation and disassembly of the vacuum circuit breaker body can be carried out quickly.

[0004] However, when the existing vacuum circuit breaker that is convenient to disassemble is in use, it is not convenient to ensure the stability of its assembly during long-term operation. The existing vacuum circuit breaker uses the elastic potential energy of the spring for fixation. However, during the long-term and frequent stretching and contracting process of the spring, it is extremely easy to have the phenomenon of elastic fatigue. Once the elasticity of the spring decreases, it cannot provide enough fastening force, resulting in the loosening of the connection part of the vacuum circuit breaker. During the power transmission process, this loosening will cause an increase in contact resistance, and then local overheating problems will occur. This not only seriously affects the normal performance of the vacuum circuit breaker and shortens its service life, but also may cause safety hazards such as fires due to overheating. In addition, the fixing method relying on the spring is more insufficient in stability when facing complex working environments, such as strong vibrations or electromagnetic interference, and it is difficult to ensure the continuous and reliable operation of the vacuum circuit breaker under harsh working conditions. Content of the Utility Model

[0005] The purpose of the utility model is to provide a vacuum circuit breaker that is convenient to disassemble, so as to solve the problem that the existing vacuum circuit breaker that is convenient to disassemble is not convenient to ensure the stability of its assembly during long-term operation as mentioned in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solution: A vacuum circuit breaker that is easy to disassemble, including an installation base, a vacuum circuit breaker main body is arranged above the installation base, a connection shell is arranged at the bottom end of the vacuum circuit breaker main body, an installation frame is arranged on one side above the installation base, a fixing mechanism is arranged inside the installation frame, a positioning mechanism is arranged above the installation base, and an auxiliary mechanism is arranged on one side of the installation frame;

[0007] The fixing mechanism includes a rotating grip, the rotating grip is arranged on one side of the installation frame, a double-sided threaded rod is fixedly connected to one side of the rotating grip, the double-sided threaded rod is located inside the installation frame, the end of the double-sided threaded rod away from the rotating grip is connected to the installation frame through a bearing, the outer surface of the double-sided threaded rod is threadedly connected with internal thread moving blocks, the number of the internal thread moving blocks is two groups, a fixing clamping plate is fixedly connected to one side of the internal thread moving block, the fixing clamping plate is slidably connected with the installation frame, and the fixing clamping plate is movably connected with the connection shell.

[0008] Preferably, the positioning mechanism includes a positioning groove, the positioning groove is fixedly arranged on the upper surface of the installation base, a positioning column is fixedly arranged at the bottom end of the connection shell, and the positioning column corresponds to the positioning groove.

[0009] Preferably, a plug-in block is fixedly arranged on the inner side of the fixing clamping plate, a plug-in groove is fixedly arranged on the outer side of the connection shell, and the plug-in block is movably inserted into the plug-in groove.

[0010] Preferably, the auxiliary mechanism includes a fixing plate, the fixing plate is fixedly arranged on one side of the upper surface of the installation base, and the installation frame is located on the upper surface of the fixing plate.

[0011] Preferably, a plurality of through slots are fixedly arranged on the surface of the rotating grip, and a positioning pin is movably inserted into the side of the rotating grip away from the double-sided threaded rod.

[0012] Preferably, the positioning pin is movably inserted into the through slot, a fixing slot is fixedly arranged on the side of the installation frame close to the rotating grip, and the positioning pin is movably connected with the fixing slot.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. When the vacuum circuit breaker that is easy to disassemble is in use, the staff can rotate the handle to drive the double-sided threaded rod to rotate. Since the double-sided threaded rod is threadedly connected to the two internally threaded moving blocks, and the internally threaded moving blocks are slidably matched with the mounting frame, the two internally threaded moving blocks will move towards or away from each other on the double-sided threaded rod, thereby driving the fixed clamping plate to move. When the fixed clamping plate moves towards the connection shell, the connection shell can be clamped and fixed on the mounting frame to fix the vacuum circuit breaker body. When disassembly is required, rotate the handle in the reverse direction to make the fixed clamping plate move away from the connection shell, facilitating the removal of the vacuum circuit breaker body. The operation is simple and convenient, greatly improving the disassembly efficiency;

[0015] 2. For the vacuum circuit breaker that is easy to disassemble, by setting the positioning mechanism, when the vacuum circuit breaker body is installed, the positioning post at the bottom end of the connection shell can be accurately inserted into the positioning groove on the mounting base to play a positioning role, making the installation position of the vacuum circuit breaker body more accurate. At the same time, it also facilitates the fixing mechanism to accurately fix the connection shell, and to a certain extent enhances the installation stability, preventing the vacuum circuit breaker body from shifting during the installation process;

[0016] 3. For the vacuum circuit breaker that is easy to disassemble, by setting the auxiliary mechanism, when the structure is in use, the through-hole groove on the surface of the rotating handle increases the friction between the hand and the handle, facilitating the rotation of the handle. The positioning pin can be inserted into the through-hole groove and the fixing groove. After the vacuum circuit breaker body is fixed, the positioning pin can be inserted into the corresponding position to prevent the handle from accidentally rotating and ensure the fixing effect of the fixing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is a three-dimensional structural schematic diagram of the fixing mechanism of the present utility model;

[0019] Figure 3 is a three-dimensional structural schematic diagram of the vacuum circuit breaker body of the present utility model;

[0020] Figure 4 is a three-dimensional structural schematic diagram of the mounting base of the present utility model;

[0021] Figure 5 is a partial detailed enlarged structural schematic diagram of the auxiliary mechanism of the present utility model.

[0022] In the figure: 1, mounting base; 2, vacuum circuit breaker body; 3, connecting shell; 4, mounting frame; 5, fixing mechanism; 501, rotating grip; 502, double-sided threaded rod; 503, internally threaded moving block; 504, fixing clamp; 6, positioning mechanism; 601, positioning groove; 602, positioning post; 603, plugging block; 604, plugging groove; 7, auxiliary mechanism; 701, fixing plate; 702, through slot; 703, positioning pin; 704, fixing groove. Detailed implementation manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figure 1 - Figure 5 The present invention provides a technical solution: a vacuum circuit breaker that is easy to disassemble, including a mounting base 1, a vacuum circuit breaker body 2 is arranged above the mounting base 1, a connecting shell 3 is arranged at the bottom end of the vacuum circuit breaker body 2, a mounting frame 4 is arranged on one side above the mounting base 1, a fixing mechanism 5 is arranged inside the mounting frame 4, a positioning mechanism 6 is arranged above the mounting base 1, and an auxiliary mechanism 7 is arranged on one side of the mounting frame 4;

[0025] The fixing mechanism 5 includes a rotating grip 501 which is arranged on one side of the mounting bracket 4. One side of the rotating grip 501 is fixedly connected with a double-sided threaded rod 502. The double-sided threaded rod 502 is located inside the mounting bracket 4. One end of the double-sided threaded rod 502 away from the rotating grip 501 is connected to the mounting bracket 4 through a bearing. The outer surface of the double-sided threaded rod 502 is threadedly connected with internally threaded moving blocks 503. The number of the internally threaded moving blocks 503 is two groups. One side of the internally threaded moving block 503 is fixedly connected with a fixed clamping plate 504. The fixed clamping plate 504 is slidably connected with the mounting bracket 4 and movably connected with the connection shell 3. The staff operates the fixing mechanism 5 and rotates the rotating grip 501. Since the rotating grip 501 is fixedly connected with the double-sided threaded rod 502, the rotating grip 501 will drive the double-sided threaded rod 502 to rotate inside the mounting bracket 4. Because there are two groups of internally threaded moving blocks 503 threadedly connected to the outer surface of the double-sided threaded rod 502 and the internally threaded moving blocks 503 are slidably connected with the mounting bracket 4, according to the principle of screw drive, when the double-sided threaded rod 502 rotates, the two groups of internally threaded moving blocks 503 will move towards each other along the axial direction of the double-sided threaded rod 502, thereby driving the fixed clamping plate 504 to approach the connection shell 3. When the fixed clamping plate 504 contacts the connection shell 3, continue to rotate the rotating grip 501 to tightly clamp the connection shell 3 with the fixed clamping plate 504, realizing the fixation of the vacuum circuit breaker main body 2. When it is necessary to disassemble the vacuum circuit breaker main body 2, the staff rotates the rotating grip 501 in the reverse direction, causing the double-sided threaded rod 502 to reverse. The two groups of internally threaded moving blocks 503 drive the fixed clamping plate 504 to move away from the connection shell 3, so that the fixed clamping plate 504 no longer clamps the connection shell 3. At this time, the vacuum circuit breaker main body 2 can be easily removed from the mounting base 1 to complete the disassembly process.

[0026] The positioning mechanism 6 includes a positioning groove 601 which is fixedly arranged on the upper surface of the mounting base 1. A positioning post 602 is fixedly arranged at the bottom end of the connecting shell 3, and the positioning post 602 corresponds to the positioning groove 601. An insertion block 603 is fixedly arranged on the inner side of the fixed clamping plate 504, and an insertion slot 604 is fixedly arranged on the outer side of the connecting shell 3. The insertion block 603 is movably inserted into the insertion slot 604. The auxiliary mechanism 7 includes a fixing plate 701 which is fixedly arranged on one side of the upper surface of the mounting base 1. The mounting frame 4 is located on the upper surface of the fixing plate 701. A plurality of through grooves 702 are fixedly arranged on the surface of the rotating handle 501. A positioning pin 703 is movably inserted on the side of the rotating handle 501 away from the double-sided threaded rod 502. The positioning pin 703 is movably inserted into the through grooves 702. A fixing groove 704 is fixedly arranged on the side of the mounting frame 4 close to the rotating handle 501. The positioning pin 703 is movably connected to the fixing groove 704. When installing the vacuum circuit breaker body 2, first, the positioning mechanism 6 is used for preliminary positioning. The positioning post 602 on the connecting shell 3 at the bottom end of the vacuum circuit breaker body 2 is aligned with the positioning groove 601 on the mounting base 1 and inserted. At this time, the position of the connecting shell 3 is initially determined, providing a basis for subsequent fixation. The insertion block 603 on the inner side of the fixed clamping plate 504 is inserted into the insertion slot 604 on the outer side of the connecting shell 3 under the action of the fixed clamping plate 504, further enhancing the fixing effect. After the installation is completed, to prevent the rotating handle 501 from accidentally rotating, the positioning pin 703 is inserted into the through grooves 702 on the surface of the rotating handle 501 and the fixing groove 704 on the mounting frame 4 to lock the rotating handle 501. The fixing plate 701 in the auxiliary mechanism 7 plays a role in supporting the mounting frame 4, ensuring that the mounting frame 4 is stably located on the mounting base 1 and guaranteeing the stability of the entire fixing process.

[0027] Working principle: When installing the vacuum circuit breaker body 2, first use the positioning mechanism 6 for preliminary positioning. Align the positioning posts 602 on the bottom connection shell 3 of the vacuum circuit breaker body 2 with the positioning grooves 601 on the installation base 1 and insert them. At this time, the position of the connection shell 3 is initially determined, providing a basis for subsequent fixation. Then, operate the fixing mechanism 5 and rotate the rotating grip 501. Since the rotating grip 501 is fixedly connected to the double-sided threaded rod 502, the rotating grip 501 will drive the double-sided threaded rod 502 to rotate within the mounting bracket 4. Because there are two groups of internally threaded moving blocks 503 threadedly connected to the outer surface of the double-sided threaded rod 502, and the internally threaded moving blocks 503 are slidably connected to the mounting bracket 4. According to the principle of screw drive, when the double-sided threaded rod 502 rotates, the two groups of internally threaded moving blocks 503 will move towards each other along the axial direction of the double-sided threaded rod 502, thereby driving the fixing clamping plate 504 to approach the connection shell 3. When the fixing clamping plate 504 contacts the connection shell 3, continue to rotate the rotating grip 501 to tightly clamp the connection shell 3 with the fixing clamping plate 504. At the same time, the insertion block 603 inside the fixing clamping plate 504 is inserted into the insertion slot 604 outside the connection shell 3 to further enhance the fixing effect. After the installation is completed, to prevent the rotating grip 501 from accidentally rotating, insert the positioning pin 703 into the through slot 702 on the surface of the rotating grip 501 and the fixing slot 704 on the mounting bracket 4 to lock the rotating grip 501. The fixing plate 701 in the auxiliary mechanism 7 plays a role in supporting the mounting bracket 4, ensuring that the mounting bracket 4 is stably located on the installation base 1 and guaranteeing the stability of the entire fixing process. When it is necessary to disassemble the vacuum circuit breaker body 2, first pull out the positioning pin 703, and then rotate the rotating grip 501 in the reverse direction, causing the double-sided threaded rod 502 to reverse. The two groups of internally threaded moving blocks 503 drive the fixing clamping plate 504 to move away from the connection shell 3 until the insertion block 603 is pulled out of the insertion slot 604 and the fixing clamping plate 504 no longer clamps the connection shell 3. At this time, the vacuum circuit breaker body 2 can be easily removed from the installation base 1 to complete the disassembly process.

[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than limiting the protection scope of the present invention. Any simple modification or equivalent replacement made by those of ordinary skill in the art to the technical solution of the present invention shall not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A vacuum circuit breaker that is easy to disassemble, comprising a mounting base (1), characterized in that: A vacuum circuit breaker body (2) is arranged above the mounting base (1), a connecting shell (3) is arranged at the bottom end of the vacuum circuit breaker body (2), a mounting frame (4) is arranged on one side above the mounting base (1), a fixing mechanism (5) is arranged inside the mounting frame (4), a positioning mechanism (6) is arranged above the mounting base (1), and an auxiliary mechanism (7) is arranged on one side of the mounting frame (4); The fixing mechanism (5) comprises a rotating handle (501), wherein the rotating handle (501) is arranged on one side of the mounting frame (4), and one side of the rotating handle (501) is fixedly connected to a double-sided threaded rod (502), wherein the double-sided threaded rod (502) is located inside the mounting frame (4), and one end of the double-sided threaded rod (502) away from the rotating handle (501) is connected to the mounting frame (4) via a bearing, and the outer surface of the double-sided threaded rod (502) is threadedly connected to an internal threaded moving block (503), wherein the number of the internal threaded moving blocks (503) is two groups, and one side of the internal threaded moving block (503) is fixedly connected to a fixed clamping plate (504), wherein the fixed clamping plate (504) is slidably connected to the mounting frame (4), and wherein the fixed clamping plate (504) is movably connected to the connecting shell (3).

2. The easily disassembled vacuum circuit breaker according to claim 1, characterized in that: The positioning mechanism (6) comprises a positioning groove (601), the positioning groove (601) being fixedly arranged on the upper surface of the mounting base (1), and a positioning column (602) being fixedly arranged at the bottom end of the connecting shell (3), the positioning column (602) corresponding to the positioning groove (601).

3. The easily disassembled vacuum circuit breaker according to claim 2, characterized in that: A plug-in block (603) is fixedly provided on the inner side of the fixed clamping plate (504), and a plug-in slot (604) is fixedly provided on the outer side of the connecting shell (3), and the plug-in block (603) is movably plugged into the plug-in slot (604).

4. The easily disassembled vacuum circuit breaker according to claim 3, characterized in that: The auxiliary mechanism (7) comprises a fixing plate (701), wherein the fixing plate (701) is fixedly arranged on one side of the upper surface of the mounting base (1), and the mounting frame (4) is located on the upper surface of the fixing plate (701).

5. The easily disassembled vacuum circuit breaker according to claim 4, characterized in that: A plurality of through grooves (702) are fixedly provided on the surface of the rotating handle (501), and a positioning pin (703) is movably inserted into the side of the rotating handle (501) away from the double-sided threaded rod (502).

6. The easily disassembled vacuum circuit breaker according to claim 5, characterized in that: The positioning pin (703) is movably plugged into the through groove (702); a fixing groove (704) is fixedly provided on one side of the mounting frame (4) close to the rotating handle (501); and the positioning pin (703) is movably connected to the fixing groove (704).

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