Vacuum circuit breaker frame

Abstract

A vacuum circuit breaker frame belongs to the field of vacuum circuit breakers, and comprises a box body with an opening on one side; the side plate is arranged corresponding to the bottom plate of the box body; the supporting plate is located between the bottom plate and the side plate; the mounting plate is located above the supporting plate, the mounting plate is provided with a mounting part which is vertically arranged and used for fixedly mounting the solid-sealed polar pole, the bottom of the mounting part is bent by 90 degrees to form an isolation part, and the other end of the isolation part is bent upwards to form a supporting part; a first installation space capable of fixing a switch-on and switch-off operation mechanism is formed between the supporting part and the installation part, the isolation part is provided with a plurality of first through holes for buffer pieces connected with an SMC crank arm to pass through, and the side, close to the box body, of the isolation part is provided with a second through hole for a connecting plate to pass through. The mounting part and the supporting part are correspondingly provided with fixing holes for fixing the closing crank arm, and the mounting part and the supporting part are correspondingly provided with a plurality of limiting holes for limiting the opening spring. The isolation crank arm and the opening spring are fixed by directly utilizing the mounting plate, the mounting plate is utilized to the maximum extent, the effect of reducing cost is achieved, meanwhile, mounting and fixing are achieved completely depending on the mounting plate, mounting is more convenient, and production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of vacuum circuit breakers, and particularly relates to a vacuum circuit breaker frame. Background Art

[0002] For a vacuum circuit breaker, all its various components are fixedly installed through a frame. For example, in a high-voltage vacuum circuit breaker disclosed in Chinese Patent CN220290702U, the existing frame generally includes a box body, a side plate, and a back plate disposed between the two. The back plate is used to fix structures such as an insulating cylinder. However, due to the size of the back plate and the fixing method of parts such as the main shaft, the cost of the entire frame is relatively high, which in turn affects the cost of the entire vacuum circuit breaker. Summary of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a vacuum circuit breaker frame.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A vacuum circuit breaker frame, comprising:

[0006] A box body with an opening on one side;

[0007] A side plate, correspondingly arranged with the bottom plate of the box body;

[0008] A support plate, located between the bottom plate and the side plate;

[0009] An installation plate, located above the support plate, and the installation plate has a vertically arranged installation part for fixedly installing a solid-sealed pole column. The bottom of the installation part is bent at 90° to form an isolation part, and the other end of the isolation part is bent upward to form a support part. A first installation space for fixedly installing a closing and opening operating mechanism is formed between the support part and the installation part. A plurality of first through holes for the buffer parts connected to the SMC crank arm to pass through are provided on the isolation part, and a second through hole for a connecting plate to pass through is provided on the side of the isolation part close to the box body. Fixing holes for fixing the closing crank arm are correspondingly provided on the installation part and the support part, and a plurality of limiting holes for limiting the closing spring are correspondingly provided on the installation part and the support part.

[0010] The support plate is of an L-shaped structure.

[0011] The limiting holes are inclined gourd-shaped holes.

[0012] The second through hole is a rectangular hole.

[0013] A plurality of connecting holes for connecting the solid-sealed pole column are provided on the installation part, and the connecting holes can be exposed when the closing crank arm closes or opens.

[0014] A process hole corresponding to the connection hole for fixing the solid-sealed pole column is provided on the supporting part.

[0015] A detachable pressure plate is provided on one side of the fixing hole, and the pressure plate cooperates with the solid-sealed pole column on the other side to fix the closing toggle arm.

[0016] A cover plate is provided on the outer side of the side plate, and a second installation space for placing the interlock mechanism for isolation and grounding is formed between the cover plate and the side plate.

[0017] A detachable isolation plate is provided on the rear side of the mounting plate.

[0018] Advantages of the present utility model: By directly using the mounting plate to fix the isolation toggle arm and the opening spring, the mounting plate is utilized to the greatest extent, which plays a role in reducing costs. At the same time, its installation and fixation are completely dependent on the mounting plate, making the installation more convenient and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model.

[0020] Figure 2 is a schematic sectional view of the present utility model.

[0021] Figure 3 is a front view of the present utility model.

[0022] Figure 4 is a top view of the present utility model.

[0023] Figure 5 is a schematic structural diagram of the present utility model for a vacuum circuit breaker. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0026] As shown in the figure, the utility model discloses a vacuum circuit breaker frame, which is welded and fixed by a box body, side plates, support plates and mounting plates and is used to carry a vacuum circuit breaker.

[0027] The box body 1 with one side open, in which an operating mechanism is placed. A panel is provided on the open side, and a detachable maintenance plate is provided at the lower end.

[0028] The side plates 2 are correspondingly arranged with the bottom plate of the box body 1. The bottom plate refers to the plate member corresponding to the opening. A space for installing 3 solid-sealed pole columns is formed between the two, and the two are fixedly connected through support plates and mounting plates.

[0029] The support plate 3 is located between the bottom plate and the side plates 2. The support plate 3 is of an L-shaped structure, which blocks the grounding shaft so that the grounding shaft is blocked by the support plate under the front view, and at the same time plays a role in increasing the strength of the frame. Moreover, it is directly formed by bending a plate, which is convenient for processing and has high reliability. In addition, triangular plates are provided at the connection parts of the support plate with the box body and the side plates, which play a role in further improving the connection strength among the three.

[0030] The mounting plate 4 is located above the support plate 3. The mounting plate 4 has a vertically arranged mounting part 41 for fixedly installing a solid-sealed pole column 70. The bottom of the mounting part 41 is bent at 90° to form an isolation part 42. The other end of the isolation part 42 is bent upward to form a support part 43. A first installation space 10 for fixedly installing a closing and opening operating mechanism is formed between the support part 43 and the mounting part 41. A number of first through holes 421 for the buffer members 82 connected to the SMC crank arm 71 to pass through are provided on the isolation part 42. And a second through hole 422 for a connecting plate 83 to pass through is provided on the side of the isolation part 42 close to the box body 1. Fixing holes 432 for fixing a closing crank arm 80 are correspondingly provided on the mounting part 41 and the support part 43. A number of limiting holes 433 for limiting a tripping spring 81 are correspondingly provided on the mounting part 41 and the support part 43.

[0031] Among them, the mounting plate 4 is directly welded and fixed between the box body and the side plates, and triangular plates are used to increase the connection strength at the connection parts. At the same time, a number of reinforcing plates connecting the mounting part 41 and the support part 43 are provided between the mounting part 41 and the support part 43 to improve the strength of the entire first installation space.

[0032] The limiting hole 433 is a slanted calabash hole. Designed as a calabash hole and being slanted, the diameter of the lower hole is larger than that of the hole diagonally above. One end of the closing spring 81 is sleeved on the outer periphery of the limiting shaft, and both ends of the limiting shaft are respectively provided with a protrusion smaller than its diameter. After the entire limiting shaft is inserted through the lower hole, when the closing spring resets, the entire limiting shaft is pulled diagonally upward, causing the protrusion to be stuck in the hole with a smaller diameter, thereby achieving the limiting and fixing of the limiting shaft. The fixing of the closing spring is directly realized by using the mounting plate. Compared with the previous mounting methods, its fixing is simple and the cost is lower than the previous methods.

[0033] The second through-hole 422 is a rectangular hole, and its length is just adapted to the movement stroke of the connecting rod driving the closing crank arm to achieve opening to closing.

[0034] A number of connection holes 411 for connecting and fixing the solid-sealed pole column 70 are provided on the mounting portion, and the connection holes 411 can be exposed when the closing crank arm 80 closes or opens. By adopting a connection method with multiple connection holes and using the avoidance of the movement stroke of the closing crank arm, the entire product can be assembled and stored first. At the time of leaving the factory, the solid-sealed pole column is installed. And this installation will not be affected by the closing crank arm, resulting in the phenomenon of inability to install. For example, in this embodiment, six connection holes are used to fixedly install the solid-sealed pole column. First, the two upper connection holes can be exposed when the closing crank arm closes, and the two middle connection holes are exposed when the closing crank arm opens. Then, by using the movement of the closing crank arm, the subsequent installation of the solid-sealed pole column is realized. When storing, it is more convenient. Compared with the current method of first installing the solid-sealed pole column and then installing the opening and closing operating mechanism, the installation method of this application is convenient for intermediate storage.

[0035] Process holes 431 corresponding to the connection holes 411 of the solid-sealed pole column 70 are provided on the support portion 43, and the process holes just correspond to the connection holes located on the lower side. Then, an operation is performed on the connection holes on the mounting portion through the tool passing through the process holes.

[0036] A detachable pressing plate 9 is provided on one side of the fixing hole. The pressing plate 9 cooperates with the solid-sealed pole column 70 on the other side to realize the fixing of the closing crank arm 80. At the same time, this application changes the fixing of the closing crank arm. It directly restricts one end outlet of the rotating shaft of the closing crank arm through the pressing plate, and the other end outlet is blocked by the solid-sealed pole column, thereby completing the limiting installation of the closing crank arm. Its installation method ignores the requirements of overall precision, and compared with the previous installation methods, this installation method is simpler.

[0037] A cover plate 5 is provided on the outer side of the side plate 2. A second installation space 20 for placing the interlock mechanism 90 for isolation and grounding is formed between the cover plate 5 and the side plate 2. By arranging the interlock mechanism on one side of the side plate, the space utilization inside the operating mechanism can be reduced, the volume of the operating mechanism can be decreased, and the cost of the overall vacuum circuit breaker can be lowered.

[0038] A detachable partition plate 6 is provided at the rear side of the mounting plate 4. The isolation between the strong and weak currents is achieved through the partition plate, further improving the overall insulation performance.

[0039] The embodiments should not be regarded as limitations of the present utility model, but any improvements based on the spirit of the present utility model should be within the protection scope of the present utility model.

Claims

1. A vacuum circuit breaker frame, characterized in that: It includes: A box body (1) with an opening on one side; A side plate (2) is arranged corresponding to the bottom plate of the box body (1); A support plate (3) located between the bottom plate and the side plate (2); The mounting plate (4) is located above the support plate (3), and the mounting plate (4) has a vertically arranged mounting portion (41) for fixing and mounting the sealed pole (70), the bottom of the mounting portion (41) is bent 90 degrees to form an isolation portion (42), the other end of the isolation portion (42) is bent upward to form a support portion (43), a first mounting space (10) for fixing the opening and closing operating mechanism is formed between the support portion (43) and the mounting portion (41), and the isolation portion (42) is provided with A plurality of first through holes (421) through which buffer members (82) connected to the SMC crank arm (71) can pass, and a second through hole (422) through which a connecting plate (83) can pass is provided on a side of the isolation portion (42) close to the housing (1), and fixing holes (432) for fixing the closing crank arm (80) are correspondingly provided on the mounting portion (41) and the supporting portion (43), and a plurality of limiting holes (433) for limiting the opening spring (81) are correspondingly provided on the mounting portion (41) and the supporting portion (43).

2. The vacuum circuit breaker frame according to claim 1, characterized in that: The support plate (3) is an L-shaped structure.

3. The vacuum circuit breaker frame according to claim 1, characterized in that: The limiting hole (433) is a gourd hole arranged obliquely.

4. The vacuum circuit breaker frame according to claim 1, characterized in that: The second through hole (422) is a rectangular hole.

5. The vacuum circuit breaker frame according to claim 1, characterized in that: The mounting portion is provided with a plurality of connection holes (411) for connecting the sealed poles (70), and the connection holes (411) can be exposed when the closing crank arm (80) is closed or opened.

6. The vacuum circuit breaker frame according to claim 5, characterized in that: The support portion (43) is provided with a process hole (431) arranged corresponding to the connection hole (411) of the sealed pole (70).

7. The vacuum circuit breaker frame according to claim 1, characterized in that: A detachable pressing plate (9) is provided on one side of the fixing hole, and the pressing plate (9) cooperates with the sealed pole (70) on the other side to fix the closing crank arm (80).

8. The vacuum circuit breaker frame according to claim 1, characterized in that: A cover plate (5) is provided on the outer side of the side plate (2), and a second installation space (20) for accommodating an isolation and grounding interlocking mechanism (90) is formed between the cover plate (5) and the side plate (2).

9. The vacuum circuit breaker frame according to claim 1, characterized in that: A detachable isolation plate (6) is provided on the rear side of the mounting plate (4).

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