A reverse limiting structure of a circuit breaker main shaft

Abstract

The utility model discloses a circuit breaker main shaft's reverse limit structure, it includes: through -hole one is placed on the center of the knob, the shaft rod one end passes through the through -hole one and is connected fixedly with the installation shell, and the shaft rod one is connected rotatably with the knob, the cantilever is placed with the knob in the same plane, the shaft rod two passes through the through -hole two, and the shaft rod two is connected rotatably with the cantilever, a plurality of clutches are placed evenly on the knob outer surface, and the clutch is connected fixedly with the knob, the clutch is placed in the card slot one, the baffle ring one is placed in the through -hole one, and the baffle ring one is connected fixedly with the knob, the annular groove corresponds with the baffle ring one, and the knob is connected with the shaft rod one through the cooperation of the baffle ring one and the annular groove, the spring is around the periphery of the shaft rod two, one end of the spring is connected fixedly with the inside surface of the installation shell, and the other end of the spring is connected with the cantilever, the baffle ring two is connected fixedly with the outside surface of the shaft rod two, and the cantilever is connected with the shaft rod two through the cooperation of the baffle ring three and the baffle ring two.

Description

Technical Field

[0001] This utility model relates to the technical field of circuit breakers, and in particular to a reversing limiting structure for the main shaft of a circuit breaker. Background Technology

[0002] By setting an anti-reverse component between the main body of the circuit breaker mechanism and the cantilever, the anti-reverse component can prevent the main shaft from reversing when the circuit breaker is opened, so that it can be better maintained in the open position. However, the existing reverse limit structure has many parts and poor stability between the connecting parts, which makes it easy to deviate when rotating, thus affecting the effect of the circuit breaker opening. Utility Model Content

[0003] The present invention aims to overcome the shortcomings of poor stability between connecting components in the prior art and provides a reversing limit structure for the main shaft of a circuit breaker with better stability.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A reversing limit structure for a circuit breaker spindle includes:

[0006] The mounting housing is located outside the circuit breaker;

[0007] A lever is placed inside the mounting housing, with a portion of the lever protruding outside the mounting housing. The cross-sectional shape of the lever is circular.

[0008] One through hole is placed at the center of the dial block;

[0009] One end of the shaft passes through the through hole and is fixedly connected to the mounting shell, and the other end is fixedly connected to the mounting shell on the other side. The shaft is rotatably connected to the lever.

[0010] A cantilever is positioned diagonally below the lever, and the cantilever and the lever are on the same plane;

[0011] Two through holes are located on one side of the center of the cantilever, near the lever block.

[0012] Shaft 2 passes through through hole 2 and is rotatably connected to the cantilever.

[0013] Several locking teeth are evenly placed on the outer surface of the lever block that contacts the cantilever when one end of the cantilever lever block is facing downwards, and the locking teeth are fixedly connected to the lever block.

[0014] Several slots are placed on the cantilever, and each slot corresponds to a tooth, with the tooth placed inside the slot.

[0015] The first retaining ring has an arc-shaped cross-section inside the first through hole and is fixedly connected to the lever block.

[0016] An annular groove is placed on the outer side of the shaft. The annular groove corresponds to the retaining ring. The retaining ring is placed inside the annular groove. The lever is engaged with the shaft through the cooperation of the retaining ring and the annular groove.

[0017] A spring is wrapped around the second shaft, one end of which is fixedly connected to the inner side of the mounting housing, and the other end of which is connected to the cantilever.

[0018] A second retaining ring is wrapped around the second shaft, and the second retaining ring is fixedly connected to the outer side of the second shaft.

[0019] The third retaining ring is placed inside the second through hole. The second shaft passes through the center of the third retaining ring. The third retaining ring is placed on the side of the second retaining ring away from the spring. The third retaining ring is fixedly connected to the cantilever. The cantilever is engaged with the second shaft through the cooperation of the third retaining ring and the second retaining ring.

[0020] During installation, shaft one and shaft two are mounted on the circuit breaker's mounting housing. Then, shaft one is passed through the through hole one on the lever, and the retaining ring one is placed in the annular groove to fix the lever. Even if the lever rotates, it will not shift its position. Then, the spring is wrapped around shaft two and fixed to the mounting housing. Shaft two passes through the through hole two of the cantilever. Next, the spring is connected to the cantilever. The spring pulls the cantilever so that the retaining ring three is blocked by the retaining ring two. During this process, the retaining teeth need to be engaged in the retaining groove one. The connecting parts ensure that the cantilever and the lever are on the same plane and will not wobble with rotation. Finally, other circuit breaker components are installed step by step and connected to the cantilever, achieving better stability.

[0021] Preferably, the cantilever is provided with a retainer, the retainer having a T-shaped cross-section. The vertical section of the T-shaped retainer is placed inside the second through hole, and the horizontal section of the T-shaped retainer is placed on the side of the cantilever far from the spring. The retainer surrounds the second shaft and contacts the outer surface of the second shaft. The retainer can stabilize the position of the cantilever.

[0022] Preferably, the cantilever has several fixing rings and one connecting ring on its side near the spring. The fixing rings are evenly distributed around the through hole two, which is centered on the through hole two. The fixing rings are fixedly connected to the cantilever. The connecting ring one passes through each fixing ring and is parallel to the cantilever. The cantilever is connected to the spring. The fixing rings and connecting ring one are provided to facilitate even stretching of the spring.

[0023] Preferably, one end of the spring is provided with a plurality of connecting rings II, which are evenly distributed on one end of the spring. The connecting rings II pass through connecting ring I, and the spring is connected to connecting ring I via connecting rings II. The connecting rings II are for the convenience of connecting the spring.

[0024] Preferably, the mounting housing is provided with a limiting rod, which is perpendicular to the lever. One end of the limiting rod is fixedly connected to the mounting housing. The lever is provided with a limiting groove, which has an arc-shaped cross-section. The other end of the limiting rod is placed in the limiting groove, which is concentric with the through hole. The cooperation of the limiting rod and the limiting groove can limit the rotation angle of the lever and increase its stability.

[0025] Preferably, the lever is provided on the lever block, one end of which is fixedly connected to the outer side of the lever block, and the other end of which is placed outside the mounting housing. The arc angle of the limiting groove corresponds to the angle at which the lever rotates outside the mounting housing. The lever facilitates the movement of the lever block.

[0026] Preferably, the lever is provided with a limiting block, the limiting block having an arc-shaped cross-section and being integrally formed with the lever. The limiting block is positioned above the locking teeth. A second locking groove is provided on the upper end face of the cantilever, the shape of which corresponds to the shape of the limiting block. After the lever rotates about the first shaft, the limiting block is positioned within the second locking groove. The cantilever is engaged with the lever through the cooperation of the second locking groove and the limiting block. The second locking groove and the limiting block facilitate the cantilever being fixed by the lever when used for gate operation.

[0027] The beneficial effects of this utility model are: improved stability; the locking plug can stabilize the position of the cantilever; the fixing ring and connecting ring one facilitate even pulling of the spring; the connecting ring two facilitates connection of the spring; the cooperation of the limiting rod and the limiting groove can limit the rotation angle of the lever and increase the stability of the lever; the lever facilitates the movement of the lever; the locking groove two and the limiting block facilitate the cantilever being fixed by the lever when used for gate opening. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is the front view of this utility model;

[0030] Figure 3 yes Figure 2 A cross-sectional view of AA;

[0031] Figure 4 yes Figure 2 A cross-sectional view of BB;

[0032] Figure 5 yes Figure 2 A magnified view of detail C;

[0033] Figure 6 yes Figure 3 A magnified view of detail D;

[0034] Figure 7 yes Figure 4 A magnified view of detail E;

[0035] Figure 8 yes Figure 4 A magnified view of the details of F;

[0036] Figure 9 This is a top view of the present invention;

[0037] Figure 10 yes Figure 9 A cross-sectional view of GG;

[0038] Figure 11 yes Figure 9 A magnified view of the details of H.

[0039] In the diagram: 1. Mounting housing, 2. Toggle block, 3. Shaft 1, 4. Cantilever, 5. Shaft 2, 6. Clamping tooth, 7. Clamping groove 1, 8. Retaining ring 1, 9. Annular groove, 10. Spring, 11. Through hole 1, 12. Retaining ring 2, 13. Through hole 2, 14. Retaining ring 3, 15. Plug, 16. Fixing ring, 17. Connecting ring 1, 18. Connecting ring 2, 19. Limiting rod, 20. Limiting groove, 21. Limiting block, 22. Clamping groove 2, 23. Toggle lever. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 9 and Figure 10In one embodiment, a reversing limiting structure for a circuit breaker spindle includes: a mounting shell 1 placed outside the circuit breaker; a lever 2 placed inside the mounting shell 1, with a portion of the lever 2 protruding outside the mounting shell 1, and the lever 2 having a circular cross-sectional shape; a through hole 11 placed at the center of the lever 2; a shaft 3, one end of which passes through the through hole 11 and is fixedly connected to the mounting shell 1, and the other end of which is fixedly connected to the mounting shell 1 on the other side, and the shaft 3 is rotatably connected to the lever 2; a cantilever 4 placed diagonally below the lever 2, and the cantilever 4 and the lever 2 are placed on the same plane; a through hole 13 placed on the side of the cantilever 4 near the center of the lever 2; a shaft 5 passing through the through hole 13, and the shaft 5 is rotatably connected to the cantilever 4; a plurality of locking teeth 6 evenly placed on the outer surface of the lever 2 that contacts the cantilever 4 when the end of the cantilever 4 away from the lever 2 is downward, and the locking teeth 6 are fixedly connected to the lever 2; and a plurality of locking slots 7 placed on the cantilever 4, with each locking slot corresponding to a locking tooth 6. The retaining tooth 6 is placed in the retaining groove 7; the retaining ring 8 is placed in the through hole 11, and the cross-sectional shape of the retaining ring 8 is arc-shaped. The retaining ring 8 is fixedly connected to the lever 2; the annular groove 9 is placed on the outer surface of the shaft 3, and the annular groove 9 corresponds to the retaining ring 8. The retaining ring 8 is placed in the annular groove 9, and the lever 2 is engaged with the shaft 3 through the cooperation of the retaining ring 8 and the annular groove 9; the spring 10 is wrapped around the shaft 5, and one end of the spring 10 is connected to the inner side of the mounting shell 1. The spring 10 is fixedly connected to the cantilever 4 at the other end; the second retaining ring 12 is wrapped around the second shaft 5 and fixedly connected to the outer side of the second shaft 5; the third retaining ring 14 is placed in the through hole 13, the second shaft 5 passes through the center of the third retaining ring 14, the third retaining ring 14 is placed on the side of the second retaining ring 12 away from the spring 10, the third retaining ring 14 is fixedly connected to the cantilever 4, and the cantilever 4 is engaged with the second shaft 5 through the cooperation of the third retaining ring 14 and the second retaining ring 12.

[0042] like Figure 1 , Figure 2 and Figure 4 As shown, a retainer 15 is provided on the cantilever 4. The cross-sectional shape of the retainer 15 is T-shaped. The vertical section of the T-shaped retainer 15 is placed in the through hole 13, and the horizontal section of the T-shaped retainer 15 is placed on the side of the cantilever 4 of the far spring 10. The retainer 15 surrounds the shaft 5 and contacts the outer side of the shaft 5.

[0043] like Figure 8 and Figure 11 As shown, the cantilever 4 has several fixing rings 16 and a connecting ring 17 on its side near the spring 10. The fixing rings 16 are evenly distributed around the through hole 13 with the through hole 13 as the center. The fixing rings 16 are fixedly connected to the cantilever 4. The connecting ring 17 passes through each fixing ring 16 and is parallel to the cantilever 4. The cantilever 4 is connected to the spring 10.

[0044] like Figure 11As shown, a number of connecting rings 18 are provided on one end of the spring 10. The connecting rings 18 are evenly distributed on one end of the spring 10. The connecting rings 18 pass through the connecting ring 17. The spring 10 is connected to the connecting ring 17 through the connecting rings 18.

[0045] like Figure 6 and Figure 10 As shown, the mounting shell 1 is provided with a limiting rod 19, which is perpendicular to the toggle block 2. One end of the limiting rod 19 is fixedly connected to the mounting shell 1. The toggle block 2 is provided with a limiting groove 20, which has an arc-shaped cross-section. The other end of the limiting rod 19 is placed in the limiting groove 20, which is concentric with the through hole 11.

[0046] like Figure 1 , Figure 2 and Figure 10 As shown, the lever 23 is provided on the lever 2. One end of the lever 23 is fixedly connected to the outer side of the lever 2, and the other end of the lever 23 is placed outside the mounting shell 1. The arc angle of the limiting groove 20 corresponds to the angle of rotation of the lever 23 outside the mounting shell 1.

[0047] like Figure 1 , Figure 2 and Figure 10 As shown, the lever 2 is provided with a limiting block 21. The cross-sectional shape of the limiting block 21 is arc-shaped. The limiting block 21 and the lever 2 are integrally formed. The limiting block 21 is placed above the locking tooth 6. The upper end face of the cantilever 4 is provided with a second locking groove 22. The shape of the second locking groove 22 corresponds to the shape of the limiting block 21. After the lever 2 rotates around the shaft 3, the limiting block 21 is placed in the second locking groove 22. The cantilever 4 is engaged with the lever 2 through the cooperation of the second locking groove 22 and the limiting block 21.

[0048] During installation, shaft 3 and shaft 5 are mounted on the mounting housing 1 of the circuit breaker. Then, shaft 3 is passed through the through hole 11 on the lever 2, with the retaining ring 8 placed in the annular groove 9 and the limiting rod 19 placed in the limiting groove 10, fixing the lever 2 in place so that it will not shift its position even if the lever 2 rotates. Then, spring 10 is wrapped around shaft 5 and fixed to the mounting housing 1. Shaft 5 passes through the through hole 13 of the cantilever 4. Then, the connecting ring 18 on spring 10 is wrapped around the connecting ring 17 on the fixing ring 16 for connection with the cantilever 4. The arm 4 is connected, and the spring 10 pulls the cantilever 4 so that the retaining ring 3 14 is blocked by the retaining ring 2 12. During this process, the locking tooth 6 needs to be inserted into the locking groove 1 7. The connecting parts make the cantilever 4 and the toggle block 2 on the same plane, so that they will not shake with rotation. Pushing the lever 23 upward can make the limit block 21 be inserted into the locking groove 22. After the cantilever 4 is raised, the circuit breaker is turned on. Finally, the other circuit breaker parts are installed step by step and connected to the cantilever 4. The connection and parts of the other circuit breakers are all existing technologies and will not be described in detail here, which achieves the purpose of better stability.

Claims

1. A reverse limiting structure for a circuit breaker spindle, characterized in that, include: The mounting housing (1) is placed outside the circuit breaker; A pry block (2) is placed inside the mounting shell (1), with a portion of the pry block (2) protruding outside the mounting shell (1), and the cross-sectional shape of the pry block (2) is circular. Through hole 1 (11) is placed at the center of the dial block (2); One end of the shaft (3) passes through the through hole (11) and is fixedly connected to the mounting shell (1), and the other end is fixedly connected to the mounting shell (1) on the other side. The shaft (3) is rotatably connected to the lever (2). The cantilever (4) is placed diagonally below the lever (2), and the cantilever (4) and the lever (2) are placed on the same plane; Through hole 2 (13) is placed on one side of the center of the cantilever (4) near the push block (2); Shaft 2 (5) passes through through hole 2 (13), and shaft 2 (5) is rotatably connected to cantilever (4); Several locking teeth (6) are evenly placed on the outer surface of the lever (2) that contacts the cantilever (4) when one end of the lever (2) is downward; the locking teeth (6) are fixedly connected to the lever (2). Several slots (7) are placed on the cantilever (4), and the slots (7) correspond one-to-one with the teeth (6), and the teeth (6) are placed in the slots (7); The first retaining ring (8) is inside the first through hole (11). The cross-sectional shape of the first retaining ring (8) is arc-shaped. The first retaining ring (8) is fixedly connected to the lever block (2). An annular groove (9) is placed on the outer side of the shaft (3). The annular groove (9) corresponds to the retaining ring (8). The retaining ring (8) is placed in the annular groove (9). The lever (2) is engaged with the shaft (3) through the cooperation of the retaining ring (8) and the annular groove (9). A spring (10) surrounds the shaft (5), one end of which is fixedly connected to the inner side of the mounting shell (1), and the other end of which is connected to the cantilever (4). A retaining ring 2 (12) is wrapped around the shaft 2 (5), and the retaining ring 2 (12) is fixedly connected to the outer side of the shaft 2 (5); The retaining ring three (14) is placed inside the through hole two (13). The shaft two (5) passes through the center of the retaining ring three (14). The retaining ring three (14) is placed on the side of the retaining ring two (12) away from the spring (10). The retaining ring three (14) is fixedly connected to the cantilever (4). The cantilever (4) is engaged with the shaft two (5) through the cooperation of the retaining ring three (14) and the retaining ring two (12).

2. The reversing limiting structure for a circuit breaker spindle according to claim 1, characterized in that, The cantilever (4) is provided with a plug (15), the cross-sectional shape of the plug (15) is T-shaped, the vertical section of the T-shaped plug (15) is placed in the through hole (13), the horizontal section of the T-shaped plug (15) is placed on the side of the cantilever (4) of the far spring (10), the plug (15) surrounds the shaft (5), and the plug (15) is in contact with the outer side of the shaft (5).

3. The reversing limiting structure for a circuit breaker spindle according to claim 2, characterized in that, The cantilever (4) has several fixing rings (16) and a connecting ring (17) on its side near the spring (10). The fixing rings (16) are evenly distributed around the through hole (13) with the through hole (13) as the center. The fixing rings (16) are fixedly connected to the cantilever (4). The connecting ring (17) passes through each fixing ring (16). The connecting ring (17) is parallel to the cantilever (4). The cantilever (4) is connected to the spring (10).

4. The reversing limiting structure for a circuit breaker spindle according to claim 3, characterized in that, A plurality of connecting rings 2 (18) are provided on one end of the spring (10). The connecting rings 2 (18) are evenly distributed on one end of the spring (10). The connecting rings 2 (18) pass through the connecting ring 1 (17). The spring (10) is connected to the connecting ring 1 (17) through the connecting rings 2 (18).

5. The reversing limiting structure for a circuit breaker spindle according to claim 1, characterized in that, The mounting shell (1) is provided with a limiting rod (19), which is perpendicular to the toggle block (2). One end of the limiting rod (19) is fixedly connected to the mounting shell (1). The toggle block (2) is provided with a limiting groove (20), which has an arc-shaped cross-section. The other end of the limiting rod (19) is placed in the limiting groove (20), which is concentric with the through hole (11).

6. The reversing limiting structure for a circuit breaker spindle according to claim 5, characterized in that, The lever (2) is provided with a lever (23). One end of the lever (23) is fixedly connected to the outer side of the lever (2), and the other end of the lever (23) is placed outside the mounting shell (1). The arc angle of the limiting groove (20) corresponds to the angle at which the lever (23) rotates outside the mounting shell (1).

7. The reversing limiting structure for a circuit breaker spindle according to claim 1, characterized in that, The lever (2) is provided with a limiting block (21). The cross-sectional shape of the limiting block (21) is arc-shaped. The limiting block (21) and the lever (2) are integrally formed. The limiting block (21) is placed above the tooth (6). The upper end surface of the cantilever (4) is provided with a second groove (22). The shape of the second groove (22) corresponds to the shape of the limiting block (21). After the lever (2) rotates around the shaft (3), the limiting block (21) is placed in the second groove (22). The cantilever (4) is engaged with the lever (2) through the cooperation of the second groove (22) and the limiting block (21).

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