Modularized spring operating mechanism of high-voltage vacuum circuit breaker

Abstract

The utility model provides a modularized spring operating mechanism of a high-voltage vacuum circuit breaker, which comprises a left side plate, a right side plate and a circuit breaker rotating shaft, the circuit breaker rotating shaft is provided with a crank arm component with an integrated structure, the crank arm component further comprises a closing crank arm, a B-phase output crank arm and an opening latch crank arm, one end of the closing crank arm is rotatably provided with a closing roller, and the other end of the closing crank arm is rotatably provided with a B-phase output crank arm. An energy storage spring is rotatably arranged on the side, away from the right side plate, of the top of the left side plate, an energy storage shaft is arranged in the middle of the left side plate and the middle of the right side plate, a hanging spring connecting lever is arranged on the energy storage shaft, the bottom of the energy storage spring is rotatably connected with the hanging spring connecting lever, a cam is further arranged on the energy storage shaft, and a cam roller is arranged on the cam. A switching-off pinch plate is rotatably arranged between the left side plate and the right side plate, a switching-off roller is arranged at the bottom of the switching-off pinch plate, and a switching-on latch is arranged on one side of the switching-off pinch plate. According to the utility model, the transmission structure is simplified, the transmission links are reduced, the transmission precision is optimized, the failure rate is greatly reduced, and the mechanical service life is also prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage vacuum circuit breakers, in particular to a modular spring operating mechanism of a high-voltage vacuum circuit breaker. Background Art

[0002] The spring mechanism of high-voltage vacuum circuit breaker is an operating mechanism that mainly uses the energy-storing spring as the power to make the switch close. This mechanism can be driven by manpower or a low-power AC / DC motor, so its closing function is basically not affected by external factors (such as power supply voltage, air source pressure, hydraulic source hydraulic pressure). The spring mechanism has a high closing speed and can achieve fast and automatic repeated closing operations.

[0003] The spring mechanism mainly includes an energy storage unit, a closing unit and an opening unit. The existing high-voltage vacuum circuit breaker spring mechanism has many transmission links, is not streamlined enough, and has low transmission accuracy. In addition, the crank arm assembly, the crank arm assembly of the opening latch and the B-phase output crank arm are split structures, which easily leads to the cumulative error of multiple parts and the rigid deformation during the action process, which affects the action accuracy of the spring mechanism. Utility Model Content

[0004] The utility model provides a modular spring operating mechanism for a high-voltage vacuum circuit breaker to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A modular spring operating mechanism for a high-voltage vacuum circuit breaker comprises a left side plate, a right side plate and a circuit breaker rotating shaft, wherein the circuit breaker rotating shaft is provided with a crank arm component of an integrated structure, wherein the crank arm component further comprises a closing crank arm, a B-phase output crank arm and an opening latch crank arm, wherein one end of the closing crank arm is rotatably provided with a closing roller, and the opening latch is rotatably provided on the opening latch crank arm, an energy storage spring is rotatably provided on the side of the top of the left side plate away from the right side plate, an energy storage shaft is provided at the middle of the left side plate and the right side plate, a hanging spring crank arm is provided on the energy storage shaft, the bottom of the energy storage spring is rotatably connected to the hanging spring crank arm, and a convex Wheel, a cam roller is provided on the cam, a gate opening plate is rotatably provided between the left plate and the right plate, a gate opening roller is provided at the bottom of the gate opening plate, a closing latch is provided on one side of the gate opening latch plate, a gate opening half-shaft is also rotatably provided between the left plate and the right plate, a gate opening release plate is provided at one end of the gate opening half-shaft close to the right plate, a shaft sleeve is provided at one end of the gate opening half-shaft close to the left plate, a closing release plate is sleeved on the shaft sleeve, a closing connecting plate is rotatably provided between the closing latch and the closing release plate, a closing electromagnet is provided at the inner top of the left plate, and a gate opening electromagnet is provided at the inner top of the right plate.

[0007] Preferably, a large gear is provided on the energy storage shaft, a gear shaft is rotatably provided at the bottom of the right side plate, the gear shaft is meshed with the large gear, and one end of the gear shaft is connected to a manual energy storage handle.

[0008] Preferably, a motor is provided at the outer bottom of the right side plate, and the output end of the motor is connected to the gear shaft.

[0009] Beneficial Effects

[0010] The above one or more technical solutions in a modular spring operating mechanism of a high-voltage vacuum circuit breaker provided by an embodiment of the utility model have at least one of the following technical effects:

[0011] (1) The utility model adopts a modular spring operating mechanism, the output gear shaft of the energy storage motor is coaxial with the manual energy storage gear shaft, the energy storage motor and the built-in manual energy storage handle are externally arranged, and the spring mechanism closing spring energy storage is realized through a first-stage gear reduction device.

[0012] (2) The utility model adopts a coaxial design of the closing tripping shaft and the opening tripping shaft, which reduces the tripping transmission links, makes the spring mechanism more concise as a whole, and improves the transmission efficiency.

[0013] (3) The utility model integrates the crank arm assembly of the closing roller on the circuit breaker shaft, the crank arm assembly of the opening latch and the B-phase output crank arm into an integrated design, thereby reducing the influence of the accumulated errors of multiple parts and the rigid deformation during the operation process on the operation accuracy of the spring mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a perspective structural diagram of the utility model mechanism opening and the energy storage spring in the un-energy-storing state;

[0016] Figure 3 This is a perspective structural diagram of the utility model mechanism opening, with the energy storage spring in an energy-storing state;

[0017] Figure 4 This is a perspective structural diagram of the utility model mechanism when the switch is closed and the energy storage spring is not storing energy;

[0018] Figure 5 This is a perspective structural diagram of the utility model mechanism closing, with the energy storage spring in an energy storage state;

[0019] Figure 6 This is a rear view structural diagram of the utility model;

[0020] Figure 7 This is a schematic diagram of the structure of the crank arm component of the utility model;

[0021] Figure 8 It is a perspective structural diagram of the closing process state of the mechanism of the utility model;

[0022] Fig. 9 This is a perspective structural diagram of the opening process state of the mechanism of the utility model;

[0023] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0024] 1. Left side plate; 2. Right side plate; 3. Circuit breaker shaft; 4. Crank arm component; 5. Closing crank arm; 6. B phase output crank arm; 7. Opening latch crank arm; 8. Closing roller; 9. Opening latch; 10. Energy storage spring; 11. Energy storage shaft; 12. Spring crank arm; 13. Cam; 14. Cam roller; 15. Opening plate; 16. Opening roller; 17. Closing latch; 18. Opening half shaft; 19. Opening release plate; 20. Bushing; 21. Closing release plate; 22. Closing connecting plate; 23. Closing electromagnet; 24. Opening electromagnet; 25. Large gear; 26. Gear shaft; 27. Manual energy storage handle; 28. Motor. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figure 1-9As shown, it is a structural schematic diagram of a modular spring operating mechanism of a high-voltage vacuum circuit breaker in a preferred embodiment of the utility model;

[0029] In this embodiment, a left side plate 1, a right side plate 2 and a circuit breaker shaft 3 are included. A crank arm component 4 of an integrated structure is embedded or bolted on the circuit breaker shaft 3. The crank arm component 4 also includes a closing crank arm 5, a B-phase output crank arm 6 and an opening latch crank arm 7. A closing roller 8 is rotatably provided at one end of the closing crank arm 5, and an opening latch 9 is rotatably provided on the opening latch crank arm 7. An energy storage spring 10 is rotatably provided on the side of the top of the left side plate 1 away from the right side plate 2. An energy storage shaft 11 is rotatably provided at the middle of the left side plate 1 and the right side plate 2. A hanging spring crank arm 12 is embedded or bolted on the energy storage shaft 11. The bottom of the energy storage spring 10 is rotatably connected to the hanging spring crank arm 12. A cam 13 is also embedded or bolted on the energy storage shaft 11. A cam roller 14 is rotatably provided on the cam 13, a gate opening plate 15 is rotatably provided between the left side plate 1 and the right side plate 2, a gate opening roller 16 is rotatably provided at the bottom of the gate opening plate 15, a closing latch 17 is provided on one side of the gate opening latch 15, a gate opening half-shaft 18 is also rotatably provided between the left side plate 1 and the right side plate 2, a gate opening release plate 19 is provided at one end of the gate opening half-shaft 18 close to the right side plate 2, a shaft sleeve 20 is provided at one end of the gate opening half-shaft 18 close to the left side plate 1, a closing release plate 21 is sleeved on the shaft sleeve 20, a closing connecting plate 22 is rotatably provided between the closing latch 17 and the closing release plate 21, a closing electromagnet 23 is provided on the inner top of the left side plate 1, and a gate opening electromagnet 24 is provided on the inner top of the right side plate 2.

[0030] In this embodiment, a large gear 25 is provided on the energy storage shaft 11, and a gear shaft 26 is rotatably provided at the bottom of the right side plate 2. The gear shaft 26 meshes with the large gear 25. One end of the gear shaft 26 is connected to a manual energy storage handle 27, and the gear shaft 26 can be manually rotated by the manual energy storage handle 27.

[0031] In this embodiment, a motor 28 is provided at the outer bottom of the right side plate 2 , and the output end of the motor 28 is connected to the gear shaft 26 , so that the motor 28 drives the gear shaft 26 to rotate.

[0032] In this embodiment, see Figure 2When the mechanism is in the open state and the energy storage spring 10 is not stored, when the motor 28 is powered or the manual energy storage handle 27 is operated, the gear shaft 26 rotates clockwise, driving the large gear 25 and the energy storage shaft 11 to rotate, and the hanging spring crank arm 12 installed on the energy storage shaft 11 drives the energy storage spring 10 to lengthen, and at the same time the cam 13 rotates counterclockwise. When the hanging spring crank arm 12 rotates to the middle, the cam roller 14 on the cam 13 automatically leans against the closing latch 17 under the action of the energy storage spring 10. When the cam roller 14 on the cam 13 leans against the closing latch 17, the energy storage action of the energy storage spring 10 is completed, and the mechanism is in the stored energy state, see Figure 8 .

[0033] In this embodiment, see Figure 8 When the closing electromagnet 23 is energized or the manual button operates the closing electromagnet 23, the closing electromagnet 23 pushes the closing trip plate 21 to rotate counterclockwise, and the closing trip plate 21 pulls the closing link plate 22 to move upward, and the closing link plate 22 drives the closing latch 17 to rotate counterclockwise to release the energy storage hold. The cam 13 rotates counterclockwise under the force of the energy storage spring 10 to hit the closing roller 8, thereby driving the opening latch 9 and the B-phase output crank arm 6 installed on the output shaft of the mechanism to rotate clockwise. When the cam 13 rotates to disengage from the closing roller 8, the circuit breaker shaft 3 returns counterclockwise under the action of the energy storage spring 10. When the opening latch 9 returns to contact the opening roller 16 installed on the opening buckle plate 15, it pushes the opening buckle plate 15 to rotate counterclockwise. When the opening buckle plate 15 contacts the opening half shaft 18, the opening buckle plate 15 and the mechanism output shaft stop moving. At this time, the mechanism is in the closed state, see Figure 4 At the same time, after the energy storage spring 10 is released, if the power supply of the motor 28 is connected and not disconnected, the mechanism automatically stores energy, so that the mechanism is in the closed energy storage state, see Figure 5 .

[0034] In this embodiment, see Fig. 9 When the opening electromagnet 24 is energized or the manual button operates the opening electromagnet 24, the opening electromagnet 24 pushes the opening trip plate 19 to rotate counterclockwise, driving the opening half shaft 18 to rotate counterclockwise. When the constraint between the opening half shaft 18 and the opening buckle plate 15 is released, the opening buckle plate 15 rotates counterclockwise, and at the same time, the constraint on the opening latch 9 is released. The mechanism shaft rotates counterclockwise under the action of the energy storage spring 10 to realize the circuit breaker opening action, and the mechanism returns to (see Figure 3 ) Opening energy storage state.

[0035] In this embodiment, see Figure 6The opening trip plate 19 and the closing trip plate 21 are coaxially designed. The left side of the opening half-shaft 18 is supported on the right side plate 2 through a flange needle bearing, and the right side of the opening half-shaft 18 is supported on the left side plate 1 through a flange needle bearing and a sleeve 20. The opening trip plate 19 is fixed to the opening half-shaft 18 by snap-fitting or bolts, and the closing trip plate 21 is sleeved on the sleeve 20, so that the opening trip and the closing trip are coaxial and the opening action and the closing action do not interfere with each other.

[0036] In this embodiment, see Figure 7 The closing crank arm 5, the opening latch crank arm 7 and the B-phase output crank arm 6 are designed as an integrated steel casting, which not only improves the strength of the parts, but also improves the relative position accuracy, avoids the angular deviation of each group of crank arms caused by the rigid deformation of the main shaft and the plastic deformation of the splines of each crank arm, greatly reduces the failure rate, and also improves the mechanical life.

[0037] The utility model provides a modular spring operating mechanism for a high-voltage vacuum circuit breaker. Its installation method, connection method or setting method are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented.

[0038] Technologies not described in detail in the present invention are all well-known technologies. Those skilled in the art can easily implement the present invention based on understanding this specification, and the contents shown in the drawings are part of this specification.

[0039] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A modular spring operating mechanism for a high-voltage vacuum circuit breaker, comprising a left side plate (1), a right side plate (2), and a circuit breaker shaft (3), characterized in that: The circuit breaker shaft (3) is provided with an integral crank arm component (4), the crank arm component (4) further comprising a closing crank arm (5), a B-phase output crank arm (6), and an opening latch crank arm (7); a closing roller (8) is rotatably provided on one end of the closing crank arm (5); an opening latch (9) is rotatably provided on the opening latch crank arm (7); an energy storage spring (10) is rotatably provided on the top of the left side plate (1) away from the right side plate (2); an energy storage shaft (11) is provided in the middle of the left side plate (1) and the right side plate (2); a hanging spring crank arm (12) is provided on the energy storage shaft (11); the bottom of the energy storage spring (10) is rotatably connected to the hanging spring crank arm (12); a cam (13) is further provided on the energy storage shaft (11); a cam roller (14) is provided on the cam (13); the left side plate (1) A gate opening plate (15) is rotatably provided between the right side plate (2), a gate opening roller (16) is provided at the bottom of the gate opening plate (15), a closing latch (17) is provided on one side of the gate opening plate (15), a gate opening half shaft (18) is rotatably provided between the left side plate (1) and the right side plate (2), a gate opening release plate (19) is provided at one end of the gate opening half shaft (18) close to the right side plate (2), a shaft sleeve (20) is provided at one end of the gate opening half shaft (18) close to the left side plate (1), a closing release plate (21) is sleeved on the shaft sleeve (20), a closing connecting plate (22) is rotatably provided between the closing latch (17) and the closing release plate (21), a closing electromagnet (23) is provided at the inner top of the left side plate (1), and a gate opening electromagnet (24) is provided at the inner top of the right side plate (2).

2. A modular spring operating mechanism for a high voltage vacuum circuit breaker according to claim 1, characterized in that: The energy storage shaft (11) is provided with a large gear (25), the bottom of the right side plate (2) is rotatably provided with a gear shaft (26), the gear shaft (26) is meshed with the large gear (25), and one end of the gear shaft (26) is connected to a manual energy storage handle (27).

3. A modular spring operating mechanism for a high voltage vacuum circuit breaker according to claim 2, characterized in that: A motor (28) is provided at the outer bottom of the right side plate (2), and an output end of the motor (28) is connected to the gear shaft (26).

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