Circuit breaker energy storage device and circuit breaker using same

Abstract

The utility model relates to the field of control electric appliances, in particular to a circuit breaker energy storage device and a circuit breaker using the same. An energy storage device of a circuit breaker comprises a shell, an energy storage power mechanism, a power transmission mechanism, an energy storage shaft, an energy storage crank arm, an energy storage spring and a release mechanism. The energy storage power mechanism is located in the shell and used for providing energy storage power. The power transmission mechanism is used for transmitting power of the energy storage power mechanism to the energy storage shaft; the energy storage crank arm is connected with the energy storage shaft; the energy storage spring is connected with the shell and the energy storage crank arm and used for storing potential energy. The releasing mechanism is used for controlling and releasing potential energy of the energy storage spring, and the releasing mechanism comprises a releasing shaft rotationally connected to the shell, an operating piece and a limiting piece which are fixed to the releasing shaft, and a limiting disc fixedly connected to the energy storage shaft; a first mounting groove is formed in the release shaft, and the operating piece comprises a stress plate located in the first mounting groove and connected with the release shaft through a bolt and an operating plate arranged on the release shaft in a sleeving mode and connected with the stress plate in a clamped mode.

Description

Technical Field

[0001] This application relates to the field of control electrical appliances, and particularly to a circuit breaker energy storage device and a circuit breaker using the same device. Background Art

[0002] An energy storage device is provided in a circuit breaker to store potential energy to provide sufficient kinetic energy at the moment of closing or opening the circuit breaker, so that the circuit breaker can complete the closing and opening operations within a very short time. And a release mechanism for controlling the release of the kinetic energy of the energy storage device is provided in the energy storage device. The existing release mechanism operating member is a part formed by cutting and bending a steel plate, then sleeved on the release shaft, and the operating member and the release shaft are fixed by bolts.

[0003] Regarding the above related technologies, the applicant believes that there are the following defects: Since the operating member is directly fixed on the release shaft by bolts, and the operating member is subjected to a relatively large force during operation, the bolts are prone to looseness during use, resulting in the situation that the pressing stroke of the operating member with the maximum stroke cannot trigger the release of the kinetic energy of the energy storage device and the operating member fails. Utility Model Content

[0004] In order to solve the problem that the operating member of the existing energy storage device is prone to failure after long-term use, this application provides a circuit breaker energy storage device and a circuit breaker using the device.

[0005] In a first aspect, a circuit breaker energy storage device provided by this application adopts the following technical solutions:

[0006] A circuit breaker energy storage device includes a housing, an energy storage power mechanism, a power transmission mechanism, an energy storage shaft, an energy storage toggle arm, an energy storage spring, and a release mechanism;

[0007] The energy storage power mechanism is located inside the housing and is used to provide energy storage power;

[0008] The power transmission mechanism is used to transmit the power of the energy storage power mechanism to the energy storage shaft;

[0009] The energy storage toggle arm is connected to the energy storage shaft;

[0010] The energy storage spring connects the housing and the energy storage toggle arm and is used to store potential energy;

[0011] The release mechanism is used to control the release of the potential energy of the energy storage spring. The release mechanism includes a release shaft rotatably connected to the housing, an operating member and a limiting member fixed on the release shaft, and a limiting disk fixedly connected to the energy storage shaft; the release shaft is formed with a first installation groove, and the operating member includes a stress plate located in the first installation groove and bolted to the release shaft and an operating plate sleeved on the release shaft and clamped with the stress plate.

[0012] By adopting the above technical solution, since the force-bearing plate is arranged in the first installation groove and connected by bolts, and the force-bearing plate is clamped with the operation plate sleeved on the release shaft, even when the bolts are loose, the force-bearing plate can only move slightly between the bottom surface of the first installation groove and the operation plate. Therefore, the kinetic energy release of the energy storage device can still be triggered.

[0013] Preferably, the operation plate includes a force-bearing section and connecting sections bent at 90 degrees with the force-bearing section on both sides. Concentric force-bearing connection holes are formed on the two connecting sections. The diameter of the force-bearing connection holes is equal to the diameter of the release shaft, and the length of the connecting section below the force-bearing connection hole is greater than the length of the connecting section above the force-bearing connection hole.

[0014] By adopting the above technical solution, the operation plate is sleeved on the release shaft through the force-bearing connection holes of the connecting sections, and the length of the connecting section below the force-bearing connection hole is greater than the length of the connecting section above the force-bearing connection hole, so that the release shaft can reset under the weight of the operation plate when not subjected to other external forces.

[0015] Preferably, the force-bearing plate includes a vertical section and a horizontal section bent at 90 degrees with the vertical section. Positioning grooves are formed on both sides of the end of the horizontal section far from the vertical section. A clamping groove is formed on the lower side of the force-bearing section. The width of the clamping groove is greater than the distance between the bottom surfaces of the two positioning grooves and less than the width of the horizontal section.

[0016] By adopting the above technical solution, the lower ends of the operation plate and the force-bearing plate are clamped through the cooperation of the positioning grooves and the clamping groove. Under this cooperation structure, the relative movement space of the force-bearing plate and the operation plate is restricted. Even if the bolts are loose and only play a role in restricting the vertical movement of the force-bearing plate relative to the first installation groove, the kinetic energy release of the energy storage device can still be triggered.

[0017] Preferably, the force-bearing plate is connected and fixed to the first installation groove by bolts passing through the force-bearing plate. An avoidance hole is formed at the position of the force-bearing section facing the first installation groove.

[0018] By adopting the above technical solution, the avoidance hole is provided so that the bolts can pass through the operation plate to connect the force-bearing plate and the first installation groove.

[0019] Preferably, the energy storage shaft is fixedly connected to the limit disk. On one side of the limit disk, a first limit post and a second limit post are provided. The first limit post and the second limit post are symmetrically arranged about the axis center of the energy storage shaft. The limiting member includes a limiting rod fixedly connected to the release shaft and a limiting block fixedly connected to the side wall of the housing at a position above the limiting rod. When the energy storage device is in the state of completed energy storage, the first limit post abuts against the limiting rod and drives the limiting rod to rotate towards the limiting block and abut against the limiting block. When the energy storage device is in the state of uncharged energy storage, the second limit post abuts against the limiting rod.

[0020] By adopting the above technical solution, during energy storage, the energy storage power mechanism drives the energy storage shaft to rotate through the power transmission mechanism. During the rotation of the energy storage shaft, the limit disk moves accordingly, and the first connecting post pushes the limiting rod downward from top to bottom so that the limiting rod rotates. Until the first connecting post moves to the position below the connecting rod, the release shaft serves under the side offset weights of the force receiving plate and the operating plate. At this time, the connecting rod rotates upward to above the first connecting post. At this time, the energy storage spring completes energy storage, and the acting force direction of the energy storage spring on the energy storage shaft drives the energy storage shaft to rotate in the reverse direction. Therefore, the first connecting post abuts against the lower surface of the limiting rod, and the limiting rod abuts against the limiting block and cannot rotate upward. Therefore, the acting force of the energy storage spring cannot be released. During closing, the operating member is pressed, so that the release shaft and the limiting rod rotate. At this time, the limiting rod pushes the first limit post to make the energy storage shaft rotate. When the limiting rod passes over the position of the first limit post, at this time, the limiting rod no longer plays a limiting role on the energy storage shaft. Therefore, the potential energy stored in the energy storage spring is released, driving the energy storage shaft to rotate to complete the closing action.

[0021] Preferably, the energy storage power mechanism includes an energy storage motor and an output shaft installed at the output end of the energy storage motor. The power transmission mechanism includes a driving sprocket fixed on the output shaft, a driven sprocket fixed on the energy storage shaft, and a chain connecting the driving sprocket and the driven sprocket.

[0022] By adopting the above technical solution, the energy storage motor drives the output shaft to rotate, and then drives the energy storage shaft to rotate through the cooperation of the driving sprocket, the driven sprocket and the chain.

[0023] Preferably, the energy storage crank arms are connected to both ends of the energy storage shaft, and each energy storage crank arm includes an eccentric member connected to the energy storage shaft and an eccentric shaft connected to the end of the eccentric member away from the energy storage crank arm. The eccentric shaft is parallel to the axis of the energy storage shaft.

[0024] By adopting the above technical solution, the eccentric member drives the energy storage spring to stretch to complete the energy storage action.

[0025] Preferably, the energy storage spring includes a spring body and connecting pieces connected to both ends of the spring body. Four spring connection holes are formed at one end of each connecting piece close to the spring body. The spring connection holes are symmetrically arranged on both sides of the connecting piece with respect to the center line of the connecting piece. The spring body shuttles back and forth between the spring connection holes on both sides and is connected to the connecting piece. An eccentric connection hole for passing through the eccentric shaft is formed in the middle of the end of the connecting piece away from the spring body. The side of the connecting piece away from the spring body is inclined from a position close to the eccentric connection hole to both sides in the direction close to the spring body.

[0026] By adopting the above technical solution, the spring body and the connecting piece are connected through the cooperation of the spring connection holes. The side of the connecting piece away from the spring body is inclined from a position close to the eccentric connection hole to both sides in the direction close to the spring body, so that when the spring is driven by the eccentric member to drive the pull rope to change the angle, it will not touch the bottom surface of the housing.

[0027] Preferably, the energy storage shaft is fixedly connected to the limit disk. A first limit post is arranged on one side of the limit disk. The limiting member includes a limiting rod fixedly connected to the release shaft and a limiting block fixedly connected to the side wall of the housing above the limiting rod. When the energy storage device is in the state of completed energy storage, the first limit post abuts against the limiting rod and drives the limiting rod to rotate towards the limiting block and abut against the limiting block. A second installation groove is formed on the outer contour edge of the limit disk. The side of the second installation groove facing the passive sprocket penetrates the side wall of the limit disk. A force-receiving convex block is fixed in the second installation groove. A part of the force-receiving convex block is located outside the installation groove to form a structure protruding from the outer contour edge of the limit disk. An installation plate with a size larger than the size of the installation groove is integrally formed on the side of the force-receiving convex block facing the passive sprocket. A bolt passes through the installation plate and is connected to the limit disk. The passive sprocket is rotatably connected to the energy storage shaft. A force-applying convex block for pushing the force-receiving convex block to drive the energy storage shaft to rotate is fixed on the side of the passive sprocket facing the limit disk.

[0028] By adopting the above technical solution, the energy storage motor drives the output shaft to rotate, and drives the driven sprocket to rotate through the cooperation of the driving sprocket and the chain. When the driven sprocket starts to rotate, since the force-applying convex block and the force-receiving convex block do not contact each other, the driven sprocket rotates while the energy storage shaft does not rotate, being in an idling state. During the idling period, the working state self-check of circuit breaker components such as the limit switch and the time-delay relay is completed. At the same time, the starting current of the motor is relatively high, and the rotational speed can be gradually increased during the idling stage to reduce the instantaneous impact on the power supply and the motor. Until the force-applying convex block abuts against the force-receiving convex block, the driven sprocket pushes the limit disc to rotate. Until the first limit post abuts against the lower side of the connecting rod, the energy storage spring completes energy storage, and the acting force direction released by the energy storage spring on the energy storage shaft drives the energy storage shaft to continue rotating in the same direction. Since it is abutted and limited by the limit rod and the limit block in this rotation direction, the acting force of the energy storage spring cannot be released. When closing is required, the operating member is pressed, so that the release shaft and the limit rod rotate. At this time, the limit rod pushes the first limit post to make the energy storage shaft rotate. When the limit rod passes over the position of the first limit post, at this time the limit rod no longer plays a limiting role on the energy storage shaft. Therefore, the potential energy stored in the energy storage spring is released, driving the energy storage shaft to rotate to complete the closing operation. During the closing process, since the rotation of the energy storage shaft does not drive the driven sprocket to rotate, an idle stroke is formed again between the force-applying convex block and the force-receiving convex block of the driven sprocket for the next energy storage.

[0029] In a second aspect, the present application provides a circuit breaker, adopting the following technical solution:

[0030] A circuit breaker includes the above circuit breaker energy storage device.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] 1. The force-receiving plate is arranged in the first installation groove and connected by bolts, and the force-receiving plate is clamped with the operating plate sleeved on the release shaft, so that even when the bolts are loose, the force-receiving plate can only move slightly between the bottom surface of the first installation groove and the operating plate. Therefore, the kinetic energy release of the energy storage device can still be triggered.

[0033] 2. The energy storage motor drives the output shaft to rotate, and drives the driven sprocket to rotate through the cooperation of the driving sprocket and the chain. When the driven sprocket starts to rotate, since the force-applying convex block and the force-receiving convex block do not contact each other, the driven sprocket rotates while the energy storage shaft does not rotate, being in an idling state. During the idling period, the working state self-check of circuit breaker components such as limit switches and time-delay relays is completed. At the same time, the starting current of the motor is relatively high, and the rotation speed can be gradually increased during the idling stage to reduce the instantaneous impact on the power supply and the motor. Until the force-applying convex block abuts against the force-receiving convex block, the driven sprocket pushes the limit disc to rotate. When the first limit post abuts against the lower side of the connecting rod, the energy storage spring completes energy storage, and the acting force direction of the energy storage spring released to the energy storage shaft drives the energy storage shaft to continue rotating in the same direction. Since the energy storage shaft is abutted and limited by the limit rod and the limit block in this rotation direction, the acting force of the energy storage spring cannot be released. When it is necessary to switch on the circuit, press the operating part, so that the release shaft and the limit rod rotate. At this time, the limit rod pushes the first limit post to make the energy storage shaft rotate. When the limit rod passes the position of the first limit post, at this time the limit rod no longer plays a limiting role on the energy storage shaft. Therefore, the potential energy stored in the energy storage spring is released, driving the energy storage shaft to rotate to complete the switching-on action. During the switching-on process, since the rotation of the energy storage shaft does not drive the driven sprocket to rotate, an idle stroke is formed again between the force-applying convex block and the force-receiving convex block of the driven sprocket for the next energy storage. Description of the Drawings

[0034] Figure 1 is a schematic structural diagram of Embodiment 1;

[0035] Figure 2 is a schematic structural diagram of Embodiment 1 after hiding part of the housing;

[0036] Figure 3 is a partial exploded schematic diagram of the release mechanism in Embodiment 1;

[0037] Figure 4 is an exploded schematic diagram of the release mechanism in Embodiment 2.

[0038] Description of reference numerals: 1. housing; 2. energy storage power mechanism; 3. power transmission mechanism; 4. energy storage shaft; 5. energy storage crank arm; 6. energy storage spring; 7. energy storage indicating mechanism; 8. release mechanism; 9. energy storage motor; 10. output shaft; 11. driving sprocket; 12. driven sprocket; 13. chain; 14. eccentric part; 15. eccentric shaft; 16. spring body; 17. connecting piece; 18. spring connection hole; 19. eccentric connection hole; 20. indicating shaft; 21. indicating piece; 22. pushing piece; 23. release shaft; 24. operating piece; 25. limiting piece; 26. limiting disc; 27. first installation groove; 28. stress plate; 29. operating plate; 30. vertical section; 31. horizontal section; 32. positioning groove; 33. stress section; 34. connecting section; 35. stress connection hole; 36. clamping groove; 37. avoiding hole; 38. first limiting post; 39. second limiting post; 40. limiting rod; 41. limiting block; 42. second installation groove; 43. stress convex block; 44. mounting plate; 45. force applying convex block. Detailed implementation manners

[0039] The following further elaborates on this application Figures 1-4 in conjunction with the accompanying drawings.

[0040] The embodiments of this application disclose a circuit breaker energy storage device and a circuit breaker using this device. The "up", "down", "left", and "right" used in the embodiments are all schematic relative directions for describing the positional relationship, and are not limitations on the positional relationship.

[0041] Embodiment 1:

[0042] As Figure 1 shown, the circuit breaker energy storage device includes a housing 1, an energy storage power mechanism 2 located inside the housing 1, a power transmission mechanism 3 connected to the energy storage power mechanism 2, an energy storage shaft 4 driven by the power transmission mechanism 3, an energy storage crank arm 5 connected to the energy storage shaft 4, an energy storage spring 6 connecting the housing 1 and the energy storage crank arm 5, an energy storage indicating mechanism 7 for indicating whether the energy storage spring 6 has completed energy storage, and a release mechanism 8 for controlling the release of the energy storage spring 6.

[0043] As Figure 1 shown, the energy storage power mechanism 2 includes an energy storage motor 9 and an output shaft 10 installed at the output end of the energy storage motor 9.

[0044] As Figure 1 and Figure 2 shown, the power transmission mechanism 3 includes a driving sprocket 11 fixed on the output shaft 10, a driven sprocket 12 fixed on the energy storage shaft 4, and a chain 13 connecting the driving sprocket 11 and the driven sprocket 12.

[0045] As Figure 1 and Figure 2As shown, the energy storage shaft 4 is rotationally connected to the housing 1 along a horizontal axis. The energy storage crank arms 5 are connected to both ends of the energy storage shaft 4, and each energy storage crank arm 5 includes an eccentric member 14 connected to the energy storage shaft 4 and an eccentric shaft 15 connected to the end of the eccentric member 14 away from the energy storage crank arm 5. The eccentric shaft 15 is parallel to the axis of the energy storage shaft 4.

[0046] As Figure 1 and Figure 2 shown, the energy storage spring 6 includes a spring body 16 and connecting pieces 17 connected to both ends of the spring body 16. Four spring connection holes 18 are formed at one end of each connecting piece 17 close to the spring body 16. The spring connection holes 18 are symmetrically arranged on both sides of the connecting piece 17 with respect to the center line of the connecting piece 17, so that the spring body 16 shuttles back and forth between the spring connection holes 18 on both sides to connect the spring body 16 with the connecting piece 17. An eccentric connection hole 19 for passing through the eccentric shaft 15 is formed in the middle of the end of the connecting piece 17 away from the spring body 16. The side of the connecting piece 17 away from the spring body 16 slopes towards both sides and towards the spring body 16 starting from a position close to the eccentric connection hole 19.

[0047] As Figure 2 shown, the energy storage indicating mechanism 7 includes an indicating shaft 20 rotationally connected to the housing 1 above the energy storage shaft 4, an indicating member 21 fixedly connected to the indicating shaft 20, and a pushing piece 22 fixed to the energy storage shaft 4.

[0048] As Figure 2 and Figure 3As shown, the release mechanism 8 includes a release shaft 23 rotatably connected to the housing 1, an operating member 24 and a limiting member 25 fixed to the release shaft 23, and a limiting disc 26 fixedly connected to the energy storage shaft 4. The axis of the release shaft 23 is parallel to the axis of the energy storage shaft 4, and is located above the output shaft 10 and below the energy storage shaft 4. A first installation groove 27 is formed at a position near the left end of the release shaft 23. The operating member 24 includes a force-bearing plate 28 installed in the first installation groove 27 and an operating plate 29 sleeved on the release shaft 23. The width of the force-bearing plate 28 is equal to the width of the first installation groove 27, and the force-bearing plate 28 is fixedly connected to the first installation groove 27 by bolts. The force-bearing plate 28 includes a vertical section 30 and a horizontal section 31 bent at 90 degrees to the vertical section 30. Positioning grooves 32 are formed on both sides of the end of the horizontal section 31 away from the vertical section 30. The operating plate 29 is formed by bending a sheet metal, and includes a force-bearing section 33 and connecting sections 34 bent at 90 degrees to the force-bearing section 33 on both sides of the force-bearing section 33. Concentric force-bearing connection holes 35 are formed on the two connecting sections 34. The diameter of the force-bearing connection holes 35 is equal to the diameter of the release shaft 23, and the length of the connecting section 34 below the force-bearing connection holes 35 is greater than the length of the connecting section 34 above the force-bearing connection holes 35. A clamping groove 36 is formed on the lower side of the force-bearing section 33. The width of the clamping groove 36 is greater than the distance between the bottom surfaces of the two positioning grooves 32 and less than the width of the horizontal section 31. An avoidance hole 37 is formed at a position on the force-bearing section 33 opposite to the first installation groove 27.

[0049] As Figure 1 and Figure 2 shown, the limiting disc 26 is fixedly connected to the energy storage shaft 4 and is located on the right side of the driven sprocket 12. First limiting posts 38 and second limiting posts 39 are formed on the right side surface of the limiting disc 26. The first limiting posts 38 and the second limiting posts 39 are symmetrically arranged with the axis of the energy storage shaft 4 as the center. The limiting member 25 includes a limiting rod 40 fixedly connected to the right end of the release shaft 23 and a limiting block 41 fixedly connected to the side wall of the housing 1 at a position above the limiting rod 40. When the energy storage device is in the state of completed energy storage, the first limiting post 38 abuts against the limiting rod 40, and drives the limiting rod 40 to rotate towards the limiting block 41 and abut against the limiting block 41. When the energy storage device is in the state of uncharged energy storage, the second limiting post 39 abuts against the limiting rod 40.

[0050] Specific usage process:

[0051] The energy storage motor 9 drives the output shaft 10 to rotate, and drives the energy storage shaft 4 to rotate through the cooperation of the driving sprocket 11, the driven sprocket 12 and the chain 13. During the rotation of the energy storage shaft 4, the limit disc 26 moves accordingly, and the first connecting column pushes the limit rod 40 downward from top to bottom, causing the limit rod 40 to rotate. Until the first connecting column moves to the position below the connecting rod, the release shaft 23 serves under the side bias weight of the force receiving plate 28 and the operating plate 29. At this time, the connecting rod rotates upward to above the first connecting column. At this time, the energy storage spring 6 completes energy storage, and the acting force direction of the energy storage spring 6 on the energy storage shaft 4 drives the energy storage shaft 4 to rotate in the reverse direction. Therefore, the first connecting column abuts against the lower surface of the limit rod 40, and the limit rod 40 abuts against the limit block 41 and cannot rotate upward. Therefore, the acting force of the energy storage spring 6 cannot be released.

[0052] When closing is required, press the operating member 24 to cause the release shaft 23 and the limit rod 40 to rotate. At this time, the limit rod 40 pushes the first limit post 38 to cause the energy storage shaft 4 to rotate. When the limit rod 40 passes the position of the first limit post 38, at this time, the limit rod 40 no longer limits the energy storage shaft 4. Therefore, the potential energy stored in the energy storage spring 6 is released, driving the energy storage shaft 4 to rotate to complete the closing action.

[0053] Embodiment 2:

[0054] As Figure 4 shown, the difference between this embodiment and Embodiment 1 is only that a second installation groove 42 is formed on the outer contour edge of the limit disc 26, and the first limit posts 38 are provided on one side of the limit disc 26 facing away from the driven sprocket 12, and the second limit posts 39 are not provided. One side of the second installation groove 42 facing the driven sprocket 12 penetrates through the side wall of the limit disc 26. A force receiving convex block 43 is fixed in the second installation groove 42. A part of the force receiving convex block 43 is located outside the installation groove to form a structure protruding from the outer contour edge of the limit disc 26. An installation plate 44 with a size larger than the size of the first installation groove 27 is integrally formed on one side of the force receiving convex block 43 facing the driven sprocket 12. The bolt passes through the installation plate 44 and is connected to the limit disc 26. The driven sprocket 12 is rotationally connected to the energy storage shaft 4, and a force applying convex block 45 for pushing the force receiving convex block 43 to drive the energy storage shaft 4 to rotate is fixed on one side of the driven sprocket 12 facing the limit disc 26.

[0055] Specific usage process:

[0056] The energy storage motor 9 drives the output shaft 10 to rotate, and drives the driven sprocket 12 to rotate through the cooperation of the driving sprocket 11 and the chain 13. When the driven sprocket 12 starts to rotate, since the force-applying convex block 45 and the force-receiving convex block 43 do not contact, the driven sprocket 12 rotates while the energy storage shaft 4 does not rotate. Until the force-applying convex block 45 abuts against the force-receiving convex block 43, the driven sprocket 12 pushes the limit disc 26 to rotate. Until the first limit post 38 abuts against the lower side of the connecting rod, the energy storage spring 6 completes energy storage, and the acting force direction released by the energy storage spring 6 on the energy storage shaft 4 drives the energy storage shaft 4 to continue rotating in the same direction. Since it is abutted and limited by the limit rod 40 and the limit block 41 in this rotation direction, the acting force of the energy storage spring 6 cannot be released.

[0057] When closing is required, press the operating member 24 to make the release shaft 23 and the limit rod 40 rotate. At this time, the limit rod 40 pushes the first limit post 38 to make the energy storage shaft 4 rotate. When the limit rod 40 crosses the position of the first limit post 38, at this time the limit rod 40 no longer plays a limiting role on the energy storage shaft 4. Therefore, the potential energy stored in the energy storage spring 6 is released, driving the energy storage shaft 4 to rotate to complete the closing action. During the closing process, since the energy storage shaft 4 does not drive the driven sprocket 12 to rotate when rotating, a section of stroke is formed again between the force-applying convex block 45 and the force-receiving convex block 43 of the driven sprocket 12.

[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A circuit breaker energy storage device, comprising a housing (1), an energy storage power mechanism (2), a power transmission mechanism (3), an energy storage shaft (4), an energy storage crank arm (5), an energy storage spring (6), and a release mechanism (8); The energy storage power mechanism (2) is located inside the housing (1) and is used to provide energy storage power; The power transmission mechanism (3) is used to transmit the power of the energy storage power mechanism (2) to the energy storage shaft (4); The energy storage crank arm (5) is connected to the energy storage shaft (4); The energy storage spring (6) connects the housing (1) and the energy storage crank arm (5) and is used to store potential energy; The release mechanism (8) is used to control the release of the potential energy of the energy storage spring (6), and is characterized in that, The release mechanism (8) includes a release shaft (23) rotatably connected to the housing (1), an operating member (24) and a limiting member (25) fixed on the release shaft (23), and a limiting disk (26) fixedly connected to the energy storage shaft (4); a first installation groove (27) is formed on the release shaft (23), and the operating member (24) includes a force-bearing plate (28) located in the first installation groove (27) and bolted to the release shaft (23) and an operating plate (29) sleeved on the release shaft (23) and clamped with the force-bearing plate (28).

2. The circuit breaker energy storage device according to claim 1, characterized in that, The operating plate (29) includes a force-bearing section (33) and connecting sections (34) bent at 90 degrees with respect to the force-bearing section (33) on both sides of the force-bearing section (33). Concentric force-bearing connection holes (35) are formed on the two connecting sections (34). The diameter of the force-bearing connection holes (35) is equal to the diameter of the release shaft (23), and the length of the connecting section (34) below the force-bearing connection holes (35) is greater than the length of the connecting section (34) above the force-bearing connection holes (35).

3. The circuit breaker energy storage device according to claim 2, characterized in that, The force-bearing plate (28) includes a vertical section (30) and a horizontal section (31) bent at 90 degrees with respect to the vertical section (30). Positioning grooves (32) are formed on both sides of the end of the horizontal section (31) away from the vertical section (30). A clamping groove (36) is formed on the lower side of the force-bearing section (33). The width of the clamping groove (36) is greater than the distance between the bottom surfaces of the two positioning grooves (32) and less than the width of the horizontal section (31).

4. The circuit breaker energy storage device according to claim 3, characterized in that, The force-bearing plate (28) is fixedly connected to the first installation groove (27) by bolts passing through the force-bearing plate (28), and an avoidance hole (37) is formed at a position on the force-bearing section (33) opposite to the first installation groove (27).

5. The circuit breaker energy storage device according to claim 1, characterized in that, The energy storage shaft (4) is fixedly connected to the limit disk (26). One side of the limit disk (26) is provided with a first limit post (38) and a second limit post (39). The first limit post (38) and the second limit post (39) are symmetrically arranged with the axis of the energy storage shaft (4) as the center. The limiting member (25) includes a limiting rod (40) fixedly connected to the release shaft (23) and a limiting block (41) fixedly connected to the side wall of the housing (1) above the limiting rod (40). When the energy storage device is in the state of completed energy storage, the first limit post (38) abuts against the limiting rod (40), and drives the limiting rod (40) to rotate towards the limiting block (41) and abut against the limiting block (41). When the energy storage device is in the state of uncharged energy storage, the second limit post (39) abuts against the limiting rod (40).

6. The circuit breaker energy storage device according to claim 1, characterized in that, The energy storage power mechanism (2) includes an energy storage motor (9) and an output shaft (10) installed at the output end of the energy storage motor (9). The power transmission mechanism (3) includes a driving sprocket (11) fixed on the output shaft (10), a driven sprocket (12) fixed on the energy storage shaft (4), and a chain (13) connecting the driving sprocket (11) and the driven sprocket (12).

7. The circuit breaker energy storage device according to claim 1, characterized in that, The energy storage crank arms (5) are connected to both ends of the energy storage shaft (4). Each energy storage crank arm (5) includes an eccentric member (14) connected to the energy storage shaft (4) and an eccentric shaft (15) connected to the end of the eccentric member (14) away from the energy storage crank arm (5). The eccentric shaft (15) is parallel to the axis of the energy storage shaft (4).

8. The circuit breaker energy storage device according to claim 7, wherein, The energy storage spring (6) includes a spring body (16) and connecting pieces (17) connected to both ends of the spring body (16). Four spring connection holes (18) are formed at one end of each connecting piece (17) close to the spring body (16). The spring connection holes (18) are symmetrically arranged on both sides of the connecting piece (17) with the center line of the connecting piece (17) as the symmetry axis. The spring body (16) shuttles back and forth between the spring connection holes (18) on both sides and is connected to the connecting piece (17). An eccentric connection hole (19) for passing through the eccentric shaft (15) is formed in the middle of the end of the connecting piece (17) away from the spring body (16). The side surface of the connecting piece (17) away from the spring body (16) slopes towards both sides and towards the spring body (16) from a position close to the eccentric connection hole (19).

9. The circuit breaker energy storage device according to claim 6, characterized in that, The energy storage shaft (4) is fixedly connected to the limit disk (26). A first limit post (38) is arranged on one side of the limit disk (26). The limiting member (25) includes a limit rod (40) fixedly connected to the release shaft (23) and a limit block (41) fixedly connected to the side wall of the housing (1) at a position above the limit rod (40). When the energy storage device is in the state of completed energy storage, the first limit post (38) abuts against the limit rod (40) and drives the limit rod (40) to rotate towards the limit block (41) and abut against the limit block (41). A second installation groove (42) is formed on the outer contour edge of the limit disk (26). The side of the second installation groove (42) facing the passive sprocket (12) penetrates through the side wall of the limit disk (26). A force-bearing convex block (43) is fixed in the second installation groove (42). A part of the force-bearing convex block (43) is located outside the installation groove to form a structure protruding from the outer contour edge of the limit disk (26). An installation plate (44) with a size larger than that of the first installation groove (27) is integrally formed on the side of the force-bearing convex block (43) facing the passive sprocket (12). A bolt passes through the installation plate (44) and is connected to the limit disk (26). The passive sprocket (12) is rotationally connected to the energy storage shaft (4). A force-applying convex block (45) for pushing the force-bearing convex block (43) to drive the energy storage shaft (4) to rotate is fixed on the side of the passive sprocket (12) facing the limit disk (26).

10. A circuit breaker, characterized in that, Including the circuit breaker energy storage device according to any one of claims 1-9.

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