Backup power automatic switching program lock of circuit breaker mechanism

Abstract

The utility model discloses a spare power automatic switching program lock of a circuit breaker mechanism, which comprises a left circuit breaker mechanism and a right circuit breaker mechanism, a left interlocking plate capable of moving up and down is arranged below a left operating shaft of the left circuit breaker mechanism, and a left crank arm interlocking part matched with a left crank arm in an interlocking manner is arranged on the left interlocking plate; a right interlocking plate capable of moving up and down is arranged below a right operating shaft of the right circuit breaker mechanism; a right crank arm interlocking part in interlocking fit with a right crank arm is arranged on the right interlocking plate; an upper transverse interlocking plate and a lower transverse interlocking plate are arranged between the left interlocking plate and the right interlocking plate; interlocking structures are respectively arranged between the upper transverse interlocking plate and the left interlocking plate and between the upper transverse interlocking plate and the right closing half shaft; and interlocking structures are respectively arranged between the lower transverse interlocking plate and the right interlocking plate and between the left closing half shafts. According to the utility model, the upper interlocking plate and the lower interlocking plate are arranged between the two sets of circuit breaker mechanisms, double locking is carried out on the operation shaft and the closing half shaft, the possibility of misoperation is avoided, and the safety and the reliability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of switch devices, in particular to a circuit breaker mechanism with an automatic throw-in program lock. Background Art

[0002] When a high-voltage circuit breaker uses a dual power supply mechanism, it must ensure that only one of the two incoming power switches is closed at any given time. When one power source is supplying power, the other cannot be closed. When both power sources are disconnected, either incoming switch can be closed; after closing, the other incoming switch cannot be closed again. Currently, most solutions on the market that implement this function use key locks, requiring manual on-site interlocking and failing to achieve automatic backup and automatic switching.

[0003] Utility model patent CN218447615U discloses an interlocking device for interlocking multiple circuit breaker mechanisms. Each circuit breaker is equipped with an interlocking structure consisting of a transmission cam, a slide, a limit interlocking block, and a tension spring. The slides of the two interlocking structures are fixedly connected by a connecting plate. When the slide of one interlocking structure moves, the connecting plate drives the slide of the other interlocking structure to move, achieving interlocking. Even after interlocking, this interlocking device still has the possibility of misoperation and is not safe and reliable. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned existing circuit breaker interlocking devices, the applicant provides a circuit breaker mechanism with a rational structure and a self-closing program lock to avoid misoperation and improve safety and reliability.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A circuit breaker mechanism with an automatic throw-in program lock comprises a left circuit breaker mechanism and a right circuit breaker mechanism, wherein the left circuit breaker mechanism and the right circuit breaker mechanism are respectively provided with an operating shaft and a closing half-shaft, and a crank arm is provided on the operating shaft; a left interlocking plate movable up and down is provided below the left operating shaft of the left circuit breaker mechanism, and a left crank arm interlocking portion interlocked with the left crank arm is provided on the left interlocking plate; a right interlocking plate movable up and down is provided below the right operating shaft of the right circuit breaker mechanism, and a right crank arm interlocking portion interlocked with the right crank arm is provided on the right interlocking plate; an upper transverse interlocking plate and a lower transverse interlocking plate are provided between the left interlocking plate and the right interlocking plate; an interlocking structure is respectively provided between the upper transverse interlocking plate and the left interlocking plate and between the right closing half-shaft; an interlocking structure is respectively provided between the lower transverse interlocking plate and the right interlocking plate and between the left closing half-shaft.

[0007] As a further improvement of the above technical solution:

[0008] After one set of circuit breaker mechanisms is closed, the interlocking structure between the upper transverse interlocking plate and the left interlocking plate locks the closing operation path of the operating shaft or one of the closing half-shafts of the other set of circuit breaker mechanisms, and the interlocking structure between the lower transverse interlocking plate and the right interlocking plate locks the closing operation path of the operating shaft or the other of the closing half-shafts of the other set of circuit breaker mechanisms.

[0009] The upper transverse interlocking plate and the lower transverse interlocking plate are respectively connected to the left mounting plate and the right mounting plate through the translation guide shaft. The upper transverse interlocking plate and the lower transverse interlocking plate can move left and right along the translation guide shaft.

[0010] The left circuit breaker mechanism and the right circuit breaker mechanism are respectively provided with a rotating wheel and a closing rotary plate, and the closing half-shaft drives the closing rotary plate to rotate through the rotating wheel; on the upper transverse interlocking plate, an upper right mechanism interlocking part is provided corresponding to the right closing rotary plate, and the upper right mechanism interlocking part cooperates with the right closing rotary plate to form an interlock between the upper transverse interlocking plate and the right closing half-shaft; on the lower transverse interlocking plate, a lower left mechanism interlocking part is provided corresponding to the left rotating wheel, and the lower left mechanism interlocking part cooperates with the left rotating wheel to form an interlock between the lower transverse interlocking plate and the left closing half-shaft.

[0011] An upper left mechanism interlocking part is provided on the upper horizontal interlocking plate, and a left mechanism interlocking part is correspondingly provided on the left interlocking plate. The upper left mechanism interlocking part and the left mechanism interlocking part cooperate to form an interlocking structure; a lower right mechanism interlocking part is provided on the lower horizontal interlocking plate, and a right mechanism interlocking part is correspondingly provided on the right interlocking plate. The lower right mechanism interlocking part and the right mechanism interlocking part form an interlocking structure.

[0012] When the left circuit breaker mechanism is opened and the right circuit breaker mechanism is closed, the right closing rotating plate pushes the upper transverse interlocking plate toward the left circuit breaker mechanism through the upper right mechanism interlocking part, and the upper transverse interlocking plate is stuck under the left mechanism interlocking part of the left interlocking plate, blocking the movement path of the left interlocking plate, and the right mechanism interlocking part of the right interlocking plate moves to the outside of the lower right mechanism interlocking part of the lower transverse interlocking plate, blocking the movement path of the lower transverse interlocking plate; when the left circuit breaker mechanism is closed and the right circuit breaker mechanism is opened, the left rotating wheel rotates and pushes the lower transverse interlocking plate toward the right circuit breaker mechanism through the lower left mechanism interlocking part, and the lower transverse interlocking plate is stuck under the right mechanism interlocking part of the right interlocking plate, blocking the movement path of the right interlocking plate, and the left mechanism interlocking part of the left interlocking plate moves to the outside of the upper left mechanism interlocking part of the upper transverse interlocking plate, blocking the movement path of the upper transverse interlocking plate.

[0013] The right closing rotating plate is bent toward the upper right mechanism interlocking portion to form a folded plate.

[0014] The upper transverse interlocking plate is connected to a first spring, and the lower transverse interlocking plate is connected to a second spring.

[0015] The left turning arm interlocking portion is arranged on the top of the left interlocking plate, and the right turning arm interlocking portion is arranged on the top of the right interlocking plate.

[0016] The left interlocking plate and the right interlocking plate are respectively connected to the mounting plate through lifting guide pins and can move up and down along the lifting guide pins.

[0017] The beneficial effects of the utility model are as follows:

[0018] The utility model provides two upper and lower interlocking plates between two sets of circuit breaker mechanisms. After one set of circuit breaker mechanisms is closed, one of the interlocking plates locks the closing path of the operating shaft of the other set of circuit breaker mechanisms through the interlocking structure, and the other interlocking plate locks the operating path of the closing half-shaft of the other set of circuit breaker mechanisms through the interlocking structure. The two interlocking plate structures perform a dual locking of the operating shaft and the closing half-shaft, preventing operation from either the operating shaft or the closing half-shaft, avoiding the possibility of misoperation and improving safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram from one perspective when the right circuit breaker mechanism of the utility model is closed.

[0020] Figure 2 This is a structural schematic diagram from another perspective when the right circuit breaker mechanism of the utility model is closed.

[0021] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0022] Figure 4 for Figure 1 Enlarged view of point B in the middle.

[0023] Figure 5 for Figure 2 Enlarged view of point C in the middle.

[0024] Figure 6 This is a structural schematic diagram from one perspective when the left circuit breaker mechanism of the utility model is closed.

[0025] Figure 7 This is a structural schematic diagram from another perspective when the left circuit breaker mechanism of the utility model is closed.

[0026] Figure 8 for Figure 6 Enlarged view of point D in the middle.

[0027] Figure 9 for Figure 7 Enlarged view of point E in the middle.

[0028] In the picture:

[0029] 100, left circuit breaker mechanism; 10, left mounting plate; 11, left operating shaft; 12, left turning arm; 13, left closing half-shaft; 14, left turning wheel; 15, left closing turn plate; 16, left closing electromagnet; 17, left interlock plate; 171, left turning arm interlock unit; 172, left mechanism interlock unit; 18, left lifting guide shaft;

[0030] 200, right circuit breaker mechanism; 20, right mounting plate; 21, right operating shaft; 22, right turning arm; 23, right closing half-shaft; 24, right rotating wheel; 25, right closing rotary plate; 251, folding plate; 26, right closing electromagnet; 27, right interlock plate; 271, right turning arm interlocking unit; 272, right mechanism interlocking unit; 28, right lifting guide shaft;

[0031] 31. Upper transverse interlocking plate; 311. Upper right mechanism interlocking portion; 312. Upper left mechanism interlocking portion; 32. Lower transverse interlocking plate; 321. Lower left mechanism interlocking portion; 322. Lower right mechanism interlocking portion; 33. First spring; 34. Second spring. DETAILED DESCRIPTION

[0032] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0033] like Figures 1 to 9 As shown, the present invention includes two sets of interlocked circuit breaker mechanisms: a left circuit breaker mechanism 100 and a right circuit breaker mechanism 200. When both sets of circuit breaker mechanisms are in the open state, any one of the circuit breaker mechanisms can be selected for closing. After one of the mechanisms is closed, the interlocking mechanism locks the other mechanism, preventing the other mechanism from performing a closing operation.

[0034] The left circuit breaker mechanism 100 is equipped with a left operating shaft 11, a left closing half-shaft 13, a left rotating wheel 14, a left closing rotary plate 15, a left closing electromagnet 16, and a left interlock plate 17. The left operating shaft 11 is fitted with a left turning arm 12, which rotates with the left operating shaft 11. The left interlock plate 17 is located below the left operating shaft 11 and is connected to the left mounting plate 10 via a left lifting guide shaft 18. The left interlock plate 17 engages with the left lifting guide shaft 18 through an oblong hole and can move up and down along the left lifting guide shaft 18. A left-turn arm interlocking portion 171 is provided on the top of the left interlocking plate 17 for interlocking with the left-turn arm 12; when the left circuit breaker mechanism 100 is opened, the left-turn arm 12 rotates to the open position along with the operating shaft, and the left interlocking plate 17 moves to the upper position, and the left-turn arm 12 does not contact the left-turn arm interlocking portion 171; when the left circuit breaker mechanism 100 is closed, the left-turn arm 12 rotates to the closed position along with the operating shaft, and the left-turn arm 12 abuts against the left-turn arm interlocking portion 171, pushing the left interlocking plate 17 to the lower position.

[0035] The right circuit breaker mechanism 200 is equipped with a right operating shaft 21, a right closing half-shaft 23, a right rotating wheel 24, a right closing rotary plate 25, a right closing electromagnet 26, and a right interlock plate 27. The right operating shaft 21 is fitted with a right turning arm 22, which rotates with the right operating shaft 21. The right interlock plate 27 is located below the right operating shaft 21 and is connected to the right mounting plate 20 via a right lifting guide shaft 28. The right interlock plate 27 engages with the right lifting guide shaft 28 through an oblong hole and can move up and down along the right lifting guide shaft 28. A right turning arm interlocking portion 271 is provided on the top of the right interlocking plate 27 for interlocking with the right turning arm 22; when the right circuit breaker mechanism 200 is opened, the right turning arm 22 rotates to the opening position along with the operating shaft, the right interlocking plate 27 moves to the upper position, and the right turning arm 22 does not contact the right turning arm interlocking portion 271; when the right circuit breaker mechanism 200 is closed, the right turning arm 22 rotates to the closing position along with the operating shaft, the right turning arm 22 abuts against the right turning arm interlocking portion 271, and pushes the right interlocking plate 27 to the lower position.

[0036] An upper transverse interlock plate 31 and a lower transverse interlock plate 32 are disposed between the left interlock plate 17 of the left circuit breaker mechanism 100 and the right interlock plate 27 of the right circuit breaker mechanism 200. The upper and lower transverse interlock plates 31, 32 are connected to the left and right mounting plates 10, 20, respectively, via translation guide shafts. These plates engage the translation guide shafts through oblong holes, allowing them to move left and right along the shafts. A first spring 33 is connected to the upper transverse interlock plate 31, which pulls the upper transverse interlock plate 31 back into position. A second spring 34 is connected to the lower transverse interlock plate 32, which pulls the lower transverse interlock plate 32 back into position.

[0037] An upper right mechanism interlocking portion 311 is provided on the upper transverse interlocking plate 31, corresponding to the right closing rotary plate 25 of the right circuit breaker mechanism 200. The upper right mechanism interlocking portion 311 cooperates with the right closing rotary plate 25 to form an interlocking structure. A folded plate 251 is formed on the right closing rotary plate 25, bent toward the upper right mechanism interlocking portion 311. This folded plate 251 cooperates with the upper right mechanism interlocking portion 311, providing a more stable and reliable fit. An upper left mechanism interlocking portion 312 is provided on the upper transverse interlocking plate 31, corresponding to the left interlocking plate 17 of the left circuit breaker mechanism 100. A left mechanism interlocking portion 172 is provided on the left interlocking plate 17, corresponding to the upper left mechanism interlocking portion 312. The upper left mechanism interlocking portion 312 cooperates with the left mechanism interlocking portion 172 to form an interlocking structure.

[0038] A lower left mechanism interlocking portion 321 is provided on the lower transverse interlocking plate 32, corresponding to the left rotating wheel 14 of the left circuit breaker mechanism 100. The lower left mechanism interlocking portion 321 cooperates with the left rotating wheel 14 to form an interlocking structure. A lower right mechanism interlocking portion 322 is provided on the lower transverse interlocking plate 32, corresponding to the right interlocking plate 27 of the right circuit breaker mechanism 200. A right mechanism interlocking portion 272 is provided on the right interlocking plate 27, corresponding to the lower right mechanism interlocking portion 322. The lower right mechanism interlocking portion 322 and the right mechanism interlocking portion 272 form an interlocking structure.

[0039] like Figures 1 to 5 As shown, when the left circuit breaker mechanism 100 is open and the right circuit breaker mechanism 200 is closed: the left turning arm 12 rotates to the open position along with the operating shaft, and the left interlock plate 17 moves to the upper position; the right turning arm 22 rotates to the closed position along with the operating shaft, and the right turning arm 22 pushes the right interlock plate 27 to the lower position through the right turning arm interlocking part 271; the right closing half shaft 23 is operated, and the right closing half shaft 23 drives the right closing turn plate 25 to rotate through the right rotating wheel 24, and the right closing turn plate 25 pushes the upper horizontal interlocking plate 31 to move toward the left circuit breaker mechanism 100 through the upper right mechanism interlocking part 311 ; At this time, the left mechanism interlocking part 172 of the left interlocking plate 17 moves up to above the upper transverse interlocking plate 31, and the upper transverse interlocking plate 31 is stuck under the left mechanism interlocking part 172 of the left interlocking plate 17, blocking the downward movement path of the left interlocking plate 17, thereby locking the closing path of the left operating shaft 11; at the same time, the right mechanism interlocking part 272 of the right interlocking plate 27 moves down to the outside of the lower right mechanism interlocking part 322 of the lower transverse interlocking plate 32, blocking the movement path of the lower transverse interlocking plate 32, thereby locking the closing operation path of the left closing half-shaft 13.

[0040] like Figures 6 to 9 As shown, when the left circuit breaker mechanism 100 is closed and the right circuit breaker mechanism 200 is open: the left turning arm 12 rotates to the closed position along with the operating shaft, and the left turning arm 12 pushes the left interlock plate 17 to the lower position through the left turning arm interlocking part 171; the right turning arm 22 rotates to the open position along with the operating shaft, and the right interlocking plate 27 moves to the upper position; the left closing half shaft 13 is operated, and the left closing half shaft 13 drives the left closing rotating plate 15 to rotate through the left rotating wheel 14, and the rotation of the left rotating wheel 14 pushes the lower horizontal interlocking plate 32 to move toward the right circuit breaker mechanism 200 through the lower left mechanism interlocking part 321; at this time, the right interlocking plate The right mechanism interlocking part 272 of 27 moves up to above the lower transverse interlocking plate 32, and the lower transverse interlocking plate 32 is stuck under the right mechanism interlocking part 272 of the right interlocking plate 27, blocking the downward movement path of the right interlocking plate 27, thereby locking the closing path of the right operating shaft 21; at the same time, the left mechanism interlocking part 172 of the left interlocking plate 17 moves down to the outside of the upper left mechanism interlocking part 312 of the upper transverse interlocking plate 31, blocking the movement path of the upper transverse interlocking plate 31, locking the rotation path of the right closing turn plate 25, thereby locking the closing operation path of the right closing half-shaft 23.

[0041] The utility model provides two upper and lower interlocking plates between two sets of circuit breaker mechanisms. After one set of circuit breaker mechanisms is closed, one of the interlocking plates locks the closing path of the operating shaft of the other set of circuit breaker mechanisms through the interlocking structure, and the other interlocking plate locks the operating path of the closing half-shaft of the other set of circuit breaker mechanisms through the interlocking structure. The two interlocking plate structures perform a dual locking of the operating shaft and the closing half-shaft, preventing operation from either the operating shaft or the closing half-shaft, avoiding the possibility of misoperation and improving safety and reliability.

[0042] The above description is an explanation of the present invention, not a limitation of the present invention. The present invention may be modified in any form without violating the spirit of the present invention.

Claims

1. A circuit breaker mechanism with an automatic program lock, comprising a left circuit breaker mechanism (100) and a right circuit breaker mechanism (200), wherein the left circuit breaker mechanism (100) and the right circuit breaker mechanism (200) are respectively provided with an operating shaft and a closing half shaft, and a crank arm is provided on the operating shaft; characterized in that: A left interlocking plate (17) that can move up and down is provided below the left operating shaft (11) of the left circuit breaker mechanism (100), and a left turning arm interlocking portion (171) that interlocks with the left turning arm (12) is provided on the left interlocking plate (17); a right interlocking plate (27) that can move up and down is provided below the right operating shaft (21) of the right circuit breaker mechanism (200), and a right interlocking plate (27) that interlocks with the right turning arm (22) is provided on the right interlocking plate (27). The right turning arm interlocking portion (271) is provided; an upper transverse interlocking plate (31) and a lower transverse interlocking plate (32) are provided between the left interlocking plate (17) and the right interlocking plate (27); an interlocking structure is provided between the upper transverse interlocking plate (31) and the left interlocking plate (17) and the right closing half shaft (23); and an interlocking structure is provided between the lower transverse interlocking plate (32) and the right interlocking plate (27) and the left closing half shaft (13).

2. The circuit breaker mechanism with automatic tripping program lock according to claim 1, characterized in that: After one set of circuit breaker mechanisms is closed, the interlocking structure between the upper transverse interlocking plate (31) and the left interlocking plate (17) locks the closing operation path of one of the operating shafts or closing half-shafts of the other set of circuit breaker mechanisms, and the interlocking structure between the lower transverse interlocking plate (32) and the right interlocking plate (27) locks the closing operation path of the other operating shaft or closing half-shaft of the other set of circuit breaker mechanisms.

3. The circuit breaker mechanism with automatic tripping program lock according to claim 1, characterized in that: The upper transverse interlocking plate (31) and the lower transverse interlocking plate (32) are respectively connected to the left mounting plate (10) and the right mounting plate (20) via translation guide shafts. The upper transverse interlocking plate (31) and the lower transverse interlocking plate (32) can move left and right along the translation guide shafts.

4. The circuit breaker mechanism with automatic tripping program lock according to claim 1, characterized in that: The left circuit breaker mechanism (100) and the right circuit breaker mechanism (200) are respectively provided with a rotating wheel and a closing rotating plate, and the closing half-shaft drives the closing rotating plate to rotate through the rotating wheel; an upper right mechanism interlocking portion (311) is provided on the upper transverse interlocking plate (31) corresponding to the right closing rotating plate (25), and the upper right mechanism interlocking portion (311) cooperates with the right closing rotating plate (25) to form an interlock between the upper transverse interlocking plate (31) and the right closing half-shaft (23); a lower left mechanism interlocking portion (321) is provided on the lower transverse interlocking plate (32) corresponding to the left rotating wheel (14), and the lower left mechanism interlocking portion (321) cooperates with the left rotating wheel (14) to form an interlock between the lower transverse interlocking plate (32) and the left closing half-shaft (13).

5. The circuit breaker mechanism with automatic tripping program lock according to claim 1, characterized in that: An upper left mechanism interlocking portion (312) is provided on the upper transverse interlocking plate (31), and a left mechanism interlocking portion (172) is correspondingly provided on the left interlocking plate (17). The upper left mechanism interlocking portion (312) cooperates with the left mechanism interlocking portion (172) to form an interlocking structure. A lower right mechanism interlocking portion (322) is provided on the lower transverse interlocking plate (32), and a right mechanism interlocking portion (272) is correspondingly provided on the right interlocking plate (27). The lower right mechanism interlocking portion (322) and the right mechanism interlocking portion (272) form an interlocking structure.

6. The circuit breaker mechanism with automatic tripping program lock according to claim 4 or 5, characterized in that: When the left circuit breaker mechanism (100) is opened and the right circuit breaker mechanism (200) is closed, the right closing rotating plate (25) pushes the upper transverse interlocking plate (31) to move toward the left circuit breaker mechanism (100) through the upper right mechanism interlocking portion (311), and the upper transverse interlocking plate (31) is stuck below the left mechanism interlocking portion (172) of the left interlocking plate (17), blocking the movement path of the left interlocking plate (17), and the right mechanism interlocking portion (272) of the right interlocking plate (27) moves to the outside of the lower right mechanism interlocking portion (322) of the lower transverse interlocking plate (32), blocking the movement path of the lower transverse interlocking plate (32); When the left circuit breaker mechanism (100) is closed and the right circuit breaker mechanism (200) is opened, the left rotating wheel (14) rotates through the lower left mechanism interlocking portion (321) to push the lower transverse interlocking plate (32) toward the right circuit breaker mechanism (200), and the lower transverse interlocking plate (32) is stuck below the right mechanism interlocking portion (272) of the right interlocking plate (27), blocking the moving path of the right interlocking plate (27), and the left mechanism interlocking portion (172) of the left interlocking plate (17) moves to the outside of the upper left mechanism interlocking portion (312) of the upper transverse interlocking plate (31), blocking the moving path of the upper transverse interlocking plate (31).

7. The circuit breaker mechanism with automatic tripping program lock according to claim 4, characterized in that: The right closing rotating plate (25) is bent toward the upper right mechanism interlocking portion (311) to form a folding plate (251).

8. The circuit breaker mechanism with automatic tripping program lock according to claim 1, characterized in that: The upper transverse interlocking plate (31) is connected to a first spring (33), and the lower transverse interlocking plate (32) is connected to a second spring (34).

9. The circuit breaker mechanism with automatic tripping program lock according to claim 1, characterized in that: The left turning arm interlocking portion (171) is arranged on the top of the left interlocking plate (17), and the right turning arm interlocking portion (271) is arranged on the top of the right interlocking plate (27).

10. The circuit breaker mechanism with automatic tripping program lock according to claim 1, characterized in that: The left interlocking plate (17) and the right interlocking plate (27) are connected to the mounting plate through lifting guide pins, respectively, and can move up and down along the lifting guide pins.

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