breaker

Abstract

The present invention provides a circuit breaker. The circuit breaker includes: a vacuum arc chamber, on which a connecting rod is provided; an operating module, including an energy storage shaft, an energy storage spring and a power output part, the power output part is connected to the connecting rod to drive the connecting rod to move, and the vacuum arc chamber is closed and opened by the connecting rod; a convex part is provided on the energy storage shaft; a counting assembly, including a counter and an operating structure, the operating structure can be raised and lowered to toggle the toggle end of the counter; the energy storage shaft has a first state in which the convex part rotates to abut against the operating structure and a second state separated from the operating structure; when the energy storage spring releases elastic potential energy, the energy storage spring drives the energy storage shaft to rotate, so as to drive the connecting rod to close the vacuum arc chamber through the power output part, the energy storage shaft rotates from the first state to the second state, the operating structure moves toward the toggle end and toggle the toggle end to rotate for counting. The present invention solves the problem in the prior art that the staff cannot accurately obtain the number of times the circuit breaker is closed.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a circuit breaker. Background Art

[0002] At present, CGIS inflatable cabinets are used in more and more occasions, and circuit breakers, as one of the core components of the device, play an indispensable role. Among them, the circuit breaker can close, carry and break the current under normal circuit conditions. The closing indication device of the circuit breaker is usually connected by an indication device connected to the energy storage shaft, and an indication window is set on the housing of the circuit breaker.

[0003] However, during the processing of the circuit breaker, due to processing errors, there is a mismatch between the indication window and the indication device in the vertical direction, which makes it impossible for the staff to intuitively observe the opening and closing status of the circuit breaker or obtain the number of closing times of the circuit breaker. This not only increases the operating difficulty of the staff, but also easily causes safety problems. Summary of the invention

[0004] The main purpose of the present invention is to provide a circuit breaker to solve the problem in the prior art that workers cannot accurately obtain the number of closing times of the circuit breaker.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a circuit breaker, comprising: a vacuum arc chamber, on which a connecting rod is provided; an operating module, comprising a casing and an energy storage shaft, an energy storage spring and a power output part arranged in the casing, the energy storage shaft is connected to the energy storage spring and the power output part, and the power output part is connected to the connecting rod to drive the connecting rod to move, and then the vacuum arc chamber is closed or opened through the connecting rod; a convex portion is arranged on the energy storage shaft; a counting assembly, comprising a counter and an operating structure, the operating structure can be raised and lowered to be used for toggling the toggle end of the counter; the energy storage shaft has a first state in which the convex portion rotates to abut against the operating structure and a second state in which the convex portion is separated from the operating structure; wherein, when the energy storage spring releases its elastic potential energy, the energy storage spring drives the energy storage shaft to rotate, so as to drive the connecting rod to close the vacuum arc chamber through the power output part, the energy storage shaft rotates from the first state to the second state, and the operating structure moves toward the toggle end and toggles the toggle end to rotate for counting.

[0006] Furthermore, the energy storage shaft is located at one side of the operating structure, and the counting assembly further comprises: an elastic structure, which is connected to the operating structure to apply an elastic force to the operating structure to move toward one side of the dial end.

[0007] Furthermore, the elastic structure is a tension spring, and the expansion and contraction direction of the tension spring is arranged parallel to the movement direction of the operating structure toward the dial end; and / or, the elastic structure is one, or the elastic structure is multiple.

[0008] Furthermore, the elastic structure is a tension spring, and the counting component also includes: a mounting plate, including a main body plate section and a first hanging plate section connected to each other, the operating structure is movably connected to the main body plate section, the first hanging plate section is used to hang the first end of the tension spring, and the operating structure is used to hang the second end of the tension spring.

[0009] Furthermore, the operating structure includes: an operating body, having a mounting hole; a second hanging plate section, arranged on one side of the operating body and used to hang the second end of the tension spring; a protruding edge, arranged on the other side of the operating body, the protruding edge is used to abut against the convex portion; a lever, arranged on the operating body, the lever is used to toggle the toggle end; a fastener, passed through the body plate section and the mounting hole to connect the operating body and the body plate section; wherein the extension direction of the mounting hole and the movement direction of the operating structure toward the toggle end are arranged parallel to each other.

[0010] Furthermore, the counter is a finger-dial counter.

[0011] Furthermore, there are three connecting rods, and the power output part includes a first spline shaft, a second spline shaft and three groups of power output assemblies. The energy storage shaft is connected to the first spline shaft, and the three groups of power output assemblies are arranged in a one-to-one correspondence with the three connecting rods; each group of power output assemblies includes: a first crank arm, which is sleeved on the first spline shaft and connected to the first spline shaft; a second crank arm, which is sleeved on the second spline shaft and connected to the second spline shaft; a transmission plate, wherein the two ends of the transmission plate are pivotally connected to the first crank arm and the second crank arm respectively, and the end of the second crank arm away from the transmission plate is connected to the connecting rod; wherein, the first crank arms of the three groups of power output assemblies are arranged at intervals along the extension direction of the first spline shaft, and the second crank arms of the three groups of power output assemblies are arranged at intervals along the extension direction of the second spline shaft.

[0012] Furthermore, the operating module also includes: an energy storage motor, the output shaft of the energy storage motor is drivingly connected to the energy storage shaft; a one-way bearing, sleeved on the output shaft; and a shaft sleeve, which is sleeved outside the one-way bearing to fix the outer ring of the one-way bearing.

[0013] Furthermore, the power output part also includes: a trip spring, one end of which is connected to the second crank arm; a guide rod, the other end of which is connected to the guide rod, the guide rod having a threaded section, and the threaded section is passed through the casing; a first nut, which is sleeved on the threaded section and threadedly connected to the threaded section; a second nut, which is sleeved on the threaded section and threadedly connected to the threaded section; the first nut and the second nut are located on both sides of the casing.

[0014] Furthermore, the circuit breaker also includes an auxiliary switch, which includes: a shell having an accommodating cavity; a plurality of contact modules arranged at intervals in the accommodating cavity; a square shaft passed through the plurality of contact modules; wherein each contact module includes two pairs of static contact groups and moving contacts, each pair of static contact groups includes two static contacts arranged oppositely, the moving contact is sleeved on the square shaft and has two contact points, each contact point is arranged oppositely to an edge of the square shaft, and the four static contacts are arranged one-to-one correspondingly to the four edges of the square shaft.

[0015] According to the technical solution of the present invention, the circuit breaker includes a vacuum interrupter, an operating module and a counting assembly. The operating module includes a housing and an energy storage shaft, an energy storage spring and a power output part arranged in the housing. A convex part is arranged on the energy storage shaft. The counting assembly includes a counter and an operating structure. The operating structure can be raised and lowered to be used for toggling the toggle end of the counter. The energy storage shaft has a first state in which the convex part rotates to abut against the operating structure and a second state separated from the operating structure. In this way, when the circuit breaker needs to be closed, the energy storage spring is operated to release elastic potential energy to drive the energy storage shaft to rotate through the energy storage spring, so as to drive the connecting rod to close the vacuum interrupter through the power output part. At this time, the energy storage shaft rotates from the first state to the second state, and the operating structure moves toward the toggle end and toggles the toggle end to rotate for counting, so as to realize the closing counting function, thereby solving the problem that the staff in the prior art cannot accurately obtain the number of closing times of the circuit breaker.

[0016] Compared with the prior art that requires staff to directly observe the opening and closing status of the circuit breaker through the indicating device and the indicating window, the circuit breaker in the present application counts the closing of the circuit breaker through a counter, that is, each time the counter increases the count, it is judged that the circuit breaker has completed a closing, so that the staff can obtain the number of closing times of the circuit breaker, which reduces the operating difficulty of the staff and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It shows a three-dimensional structural schematic diagram of a counting assembly of an embodiment of a circuit breaker according to the present invention when counting;

[0019] Figure 2 Shows Figure 1 A schematic diagram of the three-dimensional structure of the counting component of the circuit breaker when it is in a non-counting state;

[0020] Figure 3 Shows Figure 1 The main view of the circuit breaker in FIG.

[0021] Figure 4 Shows Figure 3 A schematic diagram of the three-dimensional structure of the power output part of the circuit breaker;

[0022] Figure 5 Shows Figure 3 A schematic diagram of the three-dimensional structure of an operating module of a circuit breaker;

[0023] Figure 6 Shows Figure 3 A schematic diagram of the three-dimensional structure of the circuit breaker during the closing operation;

[0024] Figure 7 Shows Figure 6 Side view of the circuit breaker during closing operation;

[0025] Figure 8 Shows Figure 3 A schematic diagram of the three-dimensional structure of the circuit breaker during the opening operation;

[0026] Fig. 9 Shows Figure 3 A front view of the energy storage motor of the circuit breaker;

[0027] Fig.10 Shows Figure 3 A schematic diagram of the three-dimensional structure of the opening spring of the power output part of the circuit breaker in the initial state;

[0028] Fig.11 Shows Fig.10 A schematic diagram of the three-dimensional structure of the power output part when the opening spring is in a stretched state;

[0029] Fig.12 Shows Fig.10 A schematic diagram of the three-dimensional structure of the guide rod of the power output part;

[0030] Fig.13 Shows Figure 3 A schematic diagram of the three-dimensional structure of the auxiliary switch of the circuit breaker;

[0031] Fig.14 Shows Fig.13 Exploded view of the auxiliary switch in;

[0032] Fig.15 Shows Fig.13 A side view of the auxiliary switch in FIG.

[0033] Fig.16 Shows Fig.13 Front view of the auxiliary switch with the front cover removed.

[0034] The above drawings include the following reference numerals:

[0035] 1. Energy storage motor; 2. Manual energy storage shaft; 3. Large gear; 4. Energy storage shaft; 5. Energy storage spring; 6. Energy storage handle shaft; 7. Closing cam; 8. Cam follower; 9. Closing trip plate; 10. Closing trip shaft; 11. Energy storage retention latch; 12. Energy storage retention shaft; 13. Middle phase output crank arm; 14. First spline shaft; 15. First crank arm; 16. Opening trip plate; 17. Opening trip shaft; 18. Opening latch plate; 19. Reset torsion spring; 20. Closing retention latch; 21. Closing retention crank arm; 22. Transmission plate; 23. Second crank arm; 24. Second spline shaft; 25. Vacuum interrupter; 26. Sealed aluminum plate; 27. Connecting rod; 28. Casing; 29. ​​Middle phase Connecting plate; 30, output shaft; 31, pinion; 32, one-way bearing; 33, bushing; 34, opening spring; 35, guide rod; 36, first nut; 37, second nut; 38, convex part; 39, elastic structure; 40, operating structure; 401, operating body; 402, mounting hole; 403, second hanging plate section; 404, protruding edge; 41, lever; 42, counter; 43, toggle end; 44, mounting plate; 441, body plate section; 442, first hanging plate section; 45, fastener; 46, auxiliary switch; 47, square shaft; 48, pull rod; 49, front cover; 50, contact module; 51, static contact; 52, moving contact; 53, rear cover; 60, housing. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0038] In the present invention, unless otherwise specified, the directional words used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0039] In order to solve the problem in the prior art that workers cannot accurately obtain the number of times a circuit breaker is closed, the present application provides a circuit breaker.

[0040] like Figures 1 to 16As shown, the circuit breaker includes a vacuum interrupter 25, an operating module and a counting assembly. A connecting rod 27 is provided on the vacuum interrupter 25. The operating module includes a housing 28 and an energy storage shaft 4, an energy storage spring 5 and a power output part arranged in the housing 28. The energy storage shaft 4 is connected to the energy storage spring 5 and the power output part. The power output part is connected to the connecting rod 27 to drive the connecting rod 27 to move, and then the vacuum interrupter 25 is closed or opened through the connecting rod 27. A convex portion 38 is provided on the energy storage shaft 4. The counting assembly includes a counter 42 and an operating structure 40, and the operating structure 40 can be raised and lowered to be used for toggling the toggle end 43 of the counter 42. The energy storage shaft 4 has a first state in which the convex portion 38 rotates to abut against the operating structure 40 and a second state in which the convex portion 38 is separated from the operating structure 40. Among them, when the energy storage spring 5 releases its elastic potential energy, the energy storage spring 5 drives the energy storage shaft 4 to rotate, so as to drive the connecting rod 27 through the power output part to perform a closing operation on the vacuum arc chamber 25, and the energy storage shaft 4 rotates from the first state to the second state, and the operating structure 40 moves toward the toggle end 43 and toggle the toggle end 43 to rotate for counting.

[0041] The technical solution of this embodiment is applied, and the circuit breaker includes a vacuum interrupter 25, an operating module and a counting assembly. The operating module includes a housing 28 and an energy storage shaft 4, an energy storage spring 5 and a power output part arranged in the housing 28. A convex portion 38 is arranged on the energy storage shaft 4. The counting assembly includes a counter 42 and an operating structure 40. The operating structure 40 is arranged to be liftable to be used for toggling a toggle end 43 of the counter 42. The energy storage shaft 4 has a first state in which the convex portion 38 rotates to abut against the operating structure 40 and a second state in which the convex portion 38 is separated from the operating structure 40. In this way, when the circuit breaker needs to be closed, the energy storage spring 5 is operated to release elastic potential energy, so as to drive the energy storage shaft 4 to rotate through the energy storage spring 5, so as to drive the connecting rod 27 to close the vacuum arc chamber 25 through the power output part. At this time, the energy storage shaft 4 rotates from the first state to the second state, and the operating structure 40 moves toward the toggle end 43 and toggles the toggle end 43 to count, so as to realize the closing counting function, thereby solving the problem in the prior art that the staff cannot accurately obtain the number of times the circuit breaker is closed.

[0042] Compared with the prior art that requires workers to directly observe the opening and closing status of the circuit breaker through the indicating device and the indicating window, the circuit breaker in this embodiment counts the closing of the circuit breaker through the counter 42, that is, each time the counter 42 increases the count, it is judged that the circuit breaker has completed a closing, so that the workers can obtain the number of closing times of the circuit breaker, which reduces the operating difficulty of the workers and improves the user experience.

[0043] like Figure 1 and Figure 2As shown, the energy storage shaft 4 is located on one side of the operating structure 40, and the counting assembly further includes an elastic structure 39. The elastic structure 39 is connected to the operating structure 40 to apply an elastic force to the operating structure 40 to move toward the toggle end 43. In this way, when the circuit breaker is operated to store energy, the energy storage shaft 4 rotates and drives the convex portion 38 connected thereto to rotate. When the convex portion 38 contacts the operating structure 40, the operating structure 40 moves vertically upward to stretch the elastic structure 39. When the convex portion 38 rotates to Figure 2 When the circuit breaker is in the position shown, the circuit breaker has completed energy storage and the elastic structure 39 is in a stretched state. After the circuit breaker is closed, the energy storage spring 5 releases energy to rotate the energy storage shaft 4, the convex portion 38 is separated from the operating structure 40, and the elastic structure 39 restores its elastic deformation and releases elastic potential energy, thereby pulling the operating structure 40 to move vertically downward. Figure 2 When the operating structure 40 moves downward, the operating structure 40 contacts the toggle end 43 and drives the toggle end 43 to rotate, and the counter 42 counts, thus realizing the circuit breaker closing counting function.

[0044] Optionally, the elastic structure 39 is a tension spring, and the expansion and contraction direction of the tension spring is arranged parallel to the movement direction of the operating structure 40 toward the toggle end 43; and / or, there is one elastic structure 39, or there are multiple elastic structures 39, and multiple elastic structures 39 are arranged in series and / or in parallel. In this way, the above arrangement ensures that the tension spring can pull the operating structure 40 to move downward to toggle the toggle end 43 to rotate, thereby realizing the counting function of the counter 42; on the other hand, it makes the number of elastic structures 39 more flexible to meet different usage requirements and working conditions, and also improves the processing flexibility of the staff. At the same time, the above arrangement makes the structure of the elastic structure 39 simpler, easier to process and realize, and reduces the processing cost and difficulty of the circuit breaker.

[0045] like Figure 1 and Figure 2 As shown, the elastic structure 39 is a tension spring, and the counting assembly further includes a mounting plate 44. The mounting plate 44 includes a main body plate section 441 and a first hanging plate section 442 that are connected to each other, the operating structure 40 is movably connected to the main body plate section 441, the first hanging plate section 442 is used to hang the first end of the tension spring, and the operating structure 40 is used to hang the second end of the tension spring. In this way, the mounting plate 44 is fixedly arranged in the housing 28, the main body plate section 441 is used to install the operating structure 40, and the first hanging plate section 442 is used to hang the tension spring, so as to ensure that the operating structure 40 can move up and down relative to the mounting plate 44, and the first end of the tension spring is fixed, so that the tension spring exerts an elastic force on the operating structure 40 to move toward the toggle end 43.

[0046] like Figure 1 and Figure 2 As shown, the operating structure 40 includes an operating body 401, a second hanging plate section 403, a protruding edge 404, a lever 41 and a fastener 45. The operating body 401 has a mounting hole 402. The second hanging plate section 403 is arranged on one side of the operating body 401 and is used to hang the second end of the tension spring. The protruding edge 404 is arranged on the other side of the operating body 401, and the protruding edge 404 is used to abut against the convex portion 38. The lever 41 is arranged on the operating body 401, and the lever 41 is used to toggle the toggle end 43. The fastener 45 is penetrated in the body plate section 441 and the mounting hole 402 to connect the operating body 401 and the body plate section 441. Among them, the extension direction of the mounting hole 402 is arranged parallel to the movement direction of the operating structure 40 toward the toggle end 43. In this way, the above-mentioned arrangement makes the structure of the operating structure 40 simpler, easy to process and realize, and reduces the processing cost and processing difficulty of the operating structure 40. At the same time, the above arrangement ensures that the operating structure 40 can move up and down relative to the mounting plate 44 so as to rotate the toggle end 43 through the toggle rod 41 and realize the counting function of the counter 42 .

[0047] Specifically, the toggle end 43 is a fork. Under the action of the fastener 45, the operating structure 40 can move up and down in the vertical direction. The lever 41 is connected to the operating body 401 through bolts and nuts. During the energy storage process, it will also move up and down in the vertical direction. The lever 41 contacts the fork and drives the fork to rotate, thereby realizing the closing counting function of the counter 42. After the lever 41 is separated from the fork, the fork automatically rotates back to the original position under the internal force of the counter 42. Figure 2 position shown and reset is completed.

[0048] Optionally, the counter 42 is a finger-shift counter. Thus, the above arrangement reduces the processing cost and processing difficulty of the counter 42, thereby reducing the overall processing cost of the circuit breaker.

[0049] like Figure 3 and Figure 4As shown, there are three connecting rods 27, the power output part includes a first spline shaft 14, a second spline shaft 24 and three groups of power output assemblies, the energy storage shaft 4 is connected to the first spline shaft 14, and the three groups of power output assemblies are arranged one by one with the three connecting rods 27. Each group of power output assemblies includes a first crank arm 15, a second crank arm 23 and a transmission plate 22. The first crank arm 15 is sleeved on the first spline shaft 14 and connected to the first spline shaft 14. The second crank arm 23 is sleeved on the second spline shaft 24 and connected to the second spline shaft 24. The two ends of the transmission plate 22 are pivotally connected to the first crank arm 15 and the second crank arm 23 respectively, and the end of the second crank arm 23 away from the transmission plate 22 is connected to the connecting rod 27. Among them, the first crank arms 15 of the three groups of power output assemblies are arranged at intervals along the extension direction of the first spline shaft 14, and the second crank arms 23 of the three groups of power output assemblies are arranged at intervals along the extension direction of the second spline shaft 24. In this way, the above arrangement enables the power output component to transmit power to the vacuum interrupter 25 for opening and closing operations, and at the same time adopts a three-phase output crank arm to drive the three-phase vacuum interrupter 25 to open, thereby improving the synchronization of the three-phase opening and closing.

[0050] Specifically, during the closing operation of the circuit breaker, the first spline shaft 14 rotates counterclockwise to drive the first crank arm 15 and the middle phase output crank arm 13 to rotate counterclockwise, thereby driving the transmission plate 22 and the middle connecting plate 29 to move upward, and finally driving the second crank arm 23 on the second spline shaft 24 to rotate clockwise, thereby pushing the connecting rod 27 to move to the right, thereby realizing the closing operation of the circuit breaker. In this way, the above process realizes the opening and closing operation of the three-phase output crank arm driving the three-phase arc extinguishing chamber to open and close. Among them, the three-phase second crank arm 23 (main shaft crank arm) is assembled on the same second spline shaft 24, which can effectively improve the synchronization of the three-phase opening and closing. In addition, the use of synchronous spline shafts can effectively avoid welding and reduce environmental pollution. At the same time, the spline shaft method makes it more convenient to assemble and disassemble, which is conducive to subsequent maintenance.

[0051] Specifically, when the circuit breaker needs to be opened, the second crank arm 23 rotates in the counterclockwise direction under the elastic force of the opening spring 34, which, on the one hand, drives the connecting rod 27 to move to the left to realize the opening of the circuit breaker; on the other hand, the second crank arm 23 rotates in the counterclockwise direction and drives the transmission plate 22 and the middle connecting plate 29 to move downward, thereby causing the first crank arm 15 and the middle phase output crank arm 13 to rotate in the clockwise direction, thereby realizing the opening of the circuit breaker operating mechanism.

[0052] In this embodiment, the first spline shaft 14 is assembled in the operating module, thereby realizing a modular solution integrated with the operating module, and greatly reducing the difficulty of disassembly and assembly of the circuit breaker.

[0053] like Fig. 9As shown, the operating module also includes an energy storage motor 1, a one-way bearing 32 and a sleeve 33. Among them, the output shaft 30 of the energy storage motor 1 is drivingly connected to the energy storage shaft 4. The one-way bearing 32 is sleeved on the output shaft 30. The sleeve 33 is sleeved outside the one-way bearing 32 to fix the outer ring of the one-way bearing 32. In this way, the above-mentioned setting of the one-way bearing 32 can prevent the output shaft 30 of the energy storage motor 1 from reversing and affecting the normal operation of the energy storage motor 1, thereby improving the operating reliability of the circuit breaker. At the same time, the one-way bearing 32 is fixed by the sleeve 33, thereby improving the installation stability of the one-way bearing 32 and the energy storage motor 1.

[0054] Specifically, the pinion 31 is sleeved on the output shaft 30 and rotates synchronously with the output shaft 30. The circuit breaker energy storage is realized by the energy storage motor 1. The energy storage motor 1 transmits power to the output shaft 30 through its internal gear transmission, so as to drive the pinion 31 to rotate through the output shaft 30, and finally transmits power to the large gear 3 to realize the energy storage operation. In this way, the above arrangement makes the energy storage motor 1 have the advantages of compact structure, miniaturization and low power.

[0055] like Figures 10 to 12 As shown, the power output part also includes a trip spring 34, a guide rod 35, a first nut 36 and a second nut 37. One end of the trip spring 34 is connected to the second crank arm 23. The other end of the trip spring 34 is connected to the guide rod 35, and the guide rod 35 has a threaded section, and the threaded section is passed through the housing 28. The first nut 36 is sleeved on the threaded section and threadedly connected to the threaded section. The second nut 37 is sleeved on the threaded section and threadedly connected to the threaded section. The first nut 36 and the second nut 37 are located on both sides of the housing 28. In this way, by adjusting the initial position of the first nut 36 on the guide rod 35, the stretched length of the trip spring 34 can be effectively adjusted, thereby changing the initial force of the trip spring 34 after tightening, so as to better improve the mechanical characteristics of the circuit breaker. In addition, the adjustable trip spring is easy to assemble and disassemble, which greatly improves the work efficiency.

[0056] Specifically, the upper end of the opening spring 34 is hooked on the front pin of the second arm 23, and the lower end of the opening spring 34 is assembled with the guide rod 35 through the pin. The guide rod 35 is inserted into the housing 28, and the guide rod 35 is equipped with two nuts at the inner and outer ends of the housing 28. When the second nut 37 (external nut) is rotated to fit the housing 28, the second nut 37 (external nut) is continuously rotated, which will pull the guide rod 35 to move along its axial direction. At this time, the opening spring 34 is stretched until Fig.11 The first nut 36 (inner nut) shown is fitted with the housing 28 to achieve fastening.

[0057] like Figures 13 to 16As shown, the circuit breaker also includes an auxiliary switch 46, and the auxiliary switch 46 includes a shell 60, a plurality of contact modules 50 and a square shaft 47. The shell 60 has a accommodating cavity. The plurality of contact modules 50 are arranged in the accommodating cavity at intervals. The square shaft 47 is passed through the plurality of contact modules 50. Among them, each contact module 50 includes two pairs of static contact groups and a moving contact 52, each pair of static contact groups includes two static contacts 51 arranged opposite to each other, the moving contact 52 is sleeved on the square shaft 47 and has two contacts, each contact point is arranged opposite to an edge of the square shaft 47, the four static contacts 51 are arranged one-to-one corresponding to the four edges of the square shaft 47, and each static contact 51 is arranged opposite to its corresponding edge. In this way, the above-mentioned arrangement makes the auxiliary switch 46 a plug-in auxiliary switch, so that the mounting socket of the auxiliary switch 46 is on the same front end face, such as Fig.14 As shown, the above-mentioned setting of the auxiliary switch 46 makes the secondary wiring of the circuit breaker more convenient and efficient. At the same time, after the wiring is completed, the line has a high degree of visualization, which is convenient for subsequent maintenance and other operations.

[0058] Specifically, the housing 60 includes a front cover plate 49 and a rear cover plate 53, and the pull rod 48 and the square shaft 47 run through the entire auxiliary switch 46, connecting the various components of the auxiliary switch 46 into one. The middle of the moving contact 52 has a square hole, and the front cover plate 49 has a square hole. The four corners of the two correspond to each other, and the opposite vertices at both ends of the moving contact 52 are in contact with the matching static contact 51. There are 4 static contacts 51 in total, and the starting positions of the 4 static contacts 51 are set at the four corners of the same square. The terminal mounting holes of the static contacts 51 are designed on the same end face. The two diagonal static contacts 51 and the moving contact 52 form the closing and opening circuit of the circuit breaker. When performing the opening and closing operation, the square shaft 47 is driven to rotate through the opening and closing state connecting plate, so that the square shaft 47 reciprocates 90°, thereby realizing the switching of the opening and closing states of the auxiliary switch.

[0059] like Figure 5 As shown, first, the energy storage motor 1 rotates to drive the large gear 3 to rotate, or the energy storage handle shaft 6 rotates to drive the manual energy storage shaft 2 matched with it to rotate, thereby driving the large gear 3 to rotate. The large gear 3 drives the energy storage shaft 4 to rotate, and the energy storage spring 5 is compressed as the energy storage shaft 4 rotates to realize energy storage. When the closing cam 7 on the energy storage shaft 4 rotates to the manual energy storage shaft 2 Figure 6 In the position shown, the cam follower 8 which cooperates with the closing cam 7 through the pin hole is engaged with the energy storage retaining latch 11, thereby maintaining the energy storage state.

[0060] like Figure 6As shown, when the circuit breaker performs a closing operation, the closing trip plate 9 is pushed, driving the closing trip shaft 10 to rotate, and then driving the energy storage retaining latch 11 to rotate, so that the cam follower 8 is released from the energy storage retaining latch 11, and the energy storage spring 5 releases energy, driving the energy storage shaft 4 to rotate, and the closing cam 7 rotates accordingly. Subsequently, the closing cam 7 contacts the middle phase output crank arm 13 and pushes the middle phase output crank arm 13 to rotate, driving the first spline shaft 14 to rotate, and then driving the first crank arm 15 thereon to rotate upward, completing the closing operation.

[0061] like Figure 7 As shown, in the closing action execution stage, when the closing cam 7 presses the first spline shaft 14 to rotate counterclockwise to below the closing holding latch 20, the closing cam 7 is released from the energy storage holding shaft 12, and the energy storage holding shaft 12 moves in the opposite direction (clockwise) under the load and drives the closing holding crank arm 21 to rotate, thereby pushing the closing holding latch 20 to rotate, and the closing holding latch 20 drives the opening buckle plate 18 to rotate, and finally the upper part of the opening buckle plate 18 is buckled with the opening tripping shaft 17, and the closing holding latch 20 rotates to below the closing holding crank arm 21, and the closing holding crank arm 21 is reset by the reset torsion spring 19, and at the same time is buckled with the closing holding latch 20 to achieve closing holding, as shown in FIG. Figure 8 shown.

[0062] Specifically, when the circuit breaker is opened, Figure 8 As shown, the opening trip plate 16 is pushed, driving the opening trip shaft 17 to rotate, so that the upper part of the opening plate 18 is released from the opening trip shaft 17. At this time, the closing holding arm 21 rotates counterclockwise in the direction shown in the figure under the action of the opening force, pushing the closing holding latch 20 and driving the opening plate 18 to rotate. When it moves to a certain position, the buffering arm on the first spline shaft 14 contacts the oil buffer, and the oil buffer moves to the end of its stroke, completing the opening limit action, and finally moves to Figure 7 The state shown completes the opening operation. The above is the entire movement process of the circuit breaker operating mechanism and the opening and closing functions it realizes.

[0063] like Figure 3As shown, the circuit breaker includes a sealed aluminum plate 26, the operating module is located on the left side of the sealed aluminum plate 26, and the vacuum interrupter 25 is located on the right side of the sealed aluminum plate 26. The housing 28 is connected and fixed to the vacuum interrupter 25 by bolts and the sealed aluminum plate 26, and the circuit breaker as a whole can be independently assembled outside the gas cabinet and then placed in the gas cabinet. Specifically, when the gas cabinet circuit breaker mechanism performs a closing operation, the first spline shaft 14 rotates to drive the first crank arm 15 to rotate counterclockwise in the direction shown in the figure, thereby causing the transmission plate 22 to move upward, driving the second crank arm 23 to rotate, and finally pushing the connecting rod 27 in the vacuum interrupter 25 to move to the right, thereby achieving the closing of the vacuum interrupter 25. Similarly, when the circuit breaker mechanism performs an opening operation, the first crank arm 15 rotates in a clockwise direction driven by the first spline shaft 14, and after being driven by the transmission plate 22 and the second crank arm 23, the connecting rod 27 finally moves to the left, thereby achieving the opening of the vacuum interrupter 25.

[0064] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0065] The circuit breaker includes a vacuum interrupter, an operating module and a counting assembly. The operating module includes a housing and an energy storage shaft, an energy storage spring and a power output part arranged in the housing. A convex portion is arranged on the energy storage shaft. The counting assembly includes a counter and an operating structure. The operating structure can be raised and lowered to be used to toggle the toggle end of the counter. The energy storage shaft has a first state in which the convex portion rotates to abut against the operating structure and a second state separated from the operating structure. In this way, when the circuit breaker needs to be closed, the energy storage spring is operated to release elastic potential energy to drive the energy storage shaft to rotate through the energy storage spring, so as to drive the connecting rod to close the vacuum interrupter through the power output part. At this time, the energy storage shaft rotates from the first state to the second state, and the operating structure moves toward the toggle end and toggle the toggle end to rotate for counting, so as to realize the closing counting function, thereby solving the problem that the staff in the prior art cannot accurately obtain the number of closing times of the circuit breaker.

[0066] Compared with the prior art that requires staff to directly observe the opening and closing status of the circuit breaker through the indicating device and the indicating window, the circuit breaker in the present application counts the closing of the circuit breaker through a counter, that is, each time the counter increases the count, it is judged that the circuit breaker has completed a closing, so that the staff can obtain the number of closing times of the circuit breaker, which reduces the operating difficulty of the staff and improves the user experience.

[0067] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0068] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0069] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A circuit breaker, characterized in that: include: A vacuum interrupter (25), wherein a connecting rod (27) is provided on the vacuum interrupter (25); The operating module comprises a housing (28) and an energy storage shaft (4), an energy storage spring (5) and a power output unit arranged in the housing (28); the energy storage shaft (4) is connected to the energy storage spring (5) and the power output unit; the power output unit is connected to the connecting rod (27) to drive the connecting rod (27) to move, thereby closing or opening the vacuum interrupter (25) through the connecting rod (27); and a convex portion (38) is arranged on the energy storage shaft (4); A counting assembly comprises a counter (42) and an operating structure (40); the operating structure (40) is arranged to be liftable and used to toggle a toggle end (43) of the counter (42); the energy storage shaft (4) has a first state in which the convex portion (38) rotates to abut against the operating structure (40) and a second state in which the convex portion (38) is separated from the operating structure (40); When the energy storage spring (5) releases its elastic potential energy, the energy storage spring (5) drives the energy storage shaft (4) to rotate, so as to drive the connecting rod (27) through the power output unit to perform a closing operation on the vacuum interrupter (25), the energy storage shaft (4) rotates from the first state to the second state, and the operating structure (40) moves toward the toggle end (43) and toggle the toggle end (43) to rotate for counting; The counting component also includes: an elastic structure (39), the elastic structure (39) being connected to the operating structure (40) and being used for applying an elastic force to the operating structure (40) to move toward one side of the dialing end (43); The elastic structure (39) is a tension spring, and the counting component further comprises: The mounting plate (44) comprises a main body plate section (441) and a first hanging plate section (442) which are connected to each other, the operating structure (40) is movably connected to the main body plate section (441), the first hanging plate section (442) is used to hang the first end of the tension spring, and the operating structure (40) is used to hang the second end of the tension spring.

2. The circuit breaker according to claim 1, characterized in that: The energy storage shaft (4) is located on one side of the operating structure (40).

3. The circuit breaker according to claim 2, characterized in that: The elastic structure (39) is a tension spring, and the expansion and contraction direction of the tension spring and the movement direction of the operating structure (40) toward the dial end (43) are arranged parallel to each other; and / or, The elastic structure (39) is one, or the elastic structure (39) is multiple.

4. The circuit breaker according to claim 1, characterized in that: The operating structure (40) comprises: An operating body (401) having a mounting hole (402); A second hanging plate section (403), arranged on one side of the operating body (401) and used for hanging the second end of the tension spring; A protruding edge (404) is arranged on the other side of the operating body (401), and the protruding edge (404) is used to abut against the convex portion (38); A lever (41) is arranged on the operating body (401), and the lever (41) is used to move the moving end (43); A fastener (45) is inserted into the main body plate section (441) and the mounting hole (402) to connect the operating body (401) and the main body plate section (441); wherein the extension direction of the mounting hole (402) and the movement direction of the operating structure (40) toward the dial end (43) are arranged parallel to each other.

5. The circuit breaker according to claim 1, characterized in that: The counter (42) is a finger-shift counter.

6. The circuit breaker according to claim 1, characterized in that: There are three connecting rods (27), the power output part comprises a first spline shaft (14), a second spline shaft (24) and three groups of power output components, the energy storage shaft (4) is connected to the first spline shaft (14), and the three groups of power output components are arranged in a one-to-one correspondence with the three connecting rods (27); each group of power output components comprises: A first crank arm (15) is sleeved on the first spline shaft (14) and connected to the first spline shaft (14); A second crank arm (23) is sleeved on the second spline shaft (24) and connected to the second spline shaft (24); A transmission plate (22), wherein two ends of the transmission plate (22) are respectively pivotally connected to the first crank arm (15) and the second crank arm (23), and an end of the second crank arm (23) away from the transmission plate (22) is connected to the connecting rod (27); The first crank arms (15) of the three power output assemblies are arranged at intervals along the extension direction of the first spline shaft (14), and the second crank arms (23) of the three power output assemblies are arranged at intervals along the extension direction of the second spline shaft (24).

7. The circuit breaker according to claim 1, characterized in that: The operation module also includes: An energy storage motor (1), wherein an output shaft (30) of the energy storage motor (1) is drivingly connected to the energy storage shaft (4); A one-way bearing (32) sleeved on the output shaft (30); A shaft sleeve (33) is sleeved outside the one-way bearing (32) to fix the outer ring of the one-way bearing (32).

8. The circuit breaker according to claim 6, characterized in that: The power output unit also includes: A trip spring (34), one end of the trip spring (34) being connected to the second crank arm (23); A guide rod (35), the other end of the opening spring (34) being connected to the guide rod (35), the guide rod (35) having a threaded section, the threaded section being passed through the housing (28); A first nut (36) is sleeved on the threaded section and threadedly connected to the threaded section; The second nut (37) is sleeved on the threaded section and threadedly connected to the threaded section; the first nut (36) and the second nut (37) are located on both sides of the housing (28).

9. The circuit breaker according to claim 1, characterized in that: The circuit breaker further comprises an auxiliary switch (46), wherein the auxiliary switch (46) comprises: A housing (60) having a receiving cavity; A plurality of contact modules (50) are arranged at intervals in the accommodating cavity; A square shaft (47) is inserted through the plurality of contact modules (50); Each of the contact modules (50) includes two pairs of stationary contact groups and moving contacts (52), each pair of stationary contact groups includes two stationary contacts (51) arranged opposite to each other, the moving contact (52) is sleeved on the square shaft (47) and has two contact points, each of the contact points is arranged opposite to an edge of the square shaft (47), and the four stationary contacts (51) are arranged one-to-one corresponding to the four edges of the square shaft (47).

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