Operating mechanism of high-voltage alternating-current vacuum circuit breaker

Abstract

The operating mechanism comprises an energy storage assembly, an opening and closing assembly and an output assembly, the energy storage assembly comprises an energy storage shaft, a cam disc and spring disc assemblies, the two spring disc assemblies are arranged at the two ends of the energy storage shaft respectively, the cam disc is arranged in the middle of the energy storage shaft, and the cam disc is arranged in the middle of the energy storage shaft. The opening and closing assembly comprises an opening and closing rotating shaft, a closing pawl and an opening pawl, the closing pawl and the opening pawl both rotate and axially sleeve the opening and closing rotating shaft in a sliding manner, and the output assembly comprises an output shaft, an upper connecting rod, a lower connecting rod and a driving shaft; the upper end of the upper connecting rod fixedly sleeves the opening and closing rotating shaft, the lower end of the upper connecting rod is hinged to the upper end of the lower connecting rod through a driving shaft, the lower end of the lower connecting rod is hinged to one side of the output shaft, and the driving shaft corresponds to the cam disc. The invention aims to solve or at least alleviate the problem that a common spring type circuit breaker is easy to store insufficient energy, and provides an operating mechanism of a high-voltage alternating-current vacuum circuit breaker.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit breakers, and in particular relates to an operating mechanism of a high-voltage AC vacuum circuit breaker. Background Art

[0002] The circuit breakers in the prior art are either traditional CT mechanisms or existing VS1 bulk mechanisms, which have many parts and are complicated to manufacture and assemble, making the disassembly and repair of the circuit breakers very complicated. The energy storage mechanism generally has the problem of long energy storage time and large manual energy storage capacity, which is time-consuming and labor-intensive to use and is very inconvenient to use. In addition, the common spring-type circuit breakers use tension springs to store energy, but the tension springs are prone to failure after long-term use due to their own reasons, resulting in insufficient energy storage. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art, solve or at least alleviate the problem that common spring-type circuit breakers are prone to insufficient energy storage, and provide an operating mechanism for a high-voltage AC vacuum circuit breaker.

[0004] The present invention is achieved through the following technical solutions: An operating mechanism for a high-voltage AC vacuum circuit breaker comprises an energy storage component, a switch-on and switch-off component and an output component; The energy storage assembly includes an energy storage shaft, a cam plate and a spring plate assembly, the two spring plate assemblies are respectively arranged at both ends of the energy storage shaft, and the cam plate is arranged in the middle of the energy storage shaft; The switch-on / off assembly comprises a switch-on / off rotating shaft, a switch-on latch and a switch-off latch, wherein the switch-on latch and the switch-off latch are both rotated and axially slidably sleeved on the switch-on / off rotating shaft, and after the energy storage assembly stores energy, the switch-on latch abuts against the energy storage assembly; The output assembly includes an output shaft, an upper connecting rod, a lower connecting rod and a driving shaft. The upper end of the upper connecting rod is fixedly sleeved on the separation and combination rotating shaft, and the lower end is hinged to the upper end of the lower connecting rod through the driving shaft. The lower end of the lower connecting rod is hinged to one side of the output shaft. The driving shaft and the cam plate are correspondingly arranged. When the cam plate rotates downward, it abuts against the driving shaft and drives the driving shaft to translate. At this time, the separation latch is locked with the separation and combination rotating shaft.

[0005] In order to further realize the present invention, the following technical solutions may be preferably selected: Preferably, the closing and opening switch assembly also includes a guide rod, a closing positioning plate and an opening positioning plate, the closing positioning plate and the opening positioning plate are respectively fixedly sleeved on the energy storage shaft and the closing and opening rotating shaft, the guide rod is arranged parallel to one side of the closing and opening rotating shaft, the closing latch and the opening latch are both axially slidably sleeved on the guide rod, and a spring is arranged between the closing latch and the opening latch and the guide rod, and the spring drives the closing latch or the opening latch to be embedded in the closing positioning plate or the opening positioning plate.

[0006] Preferably, the closing and opening assembly also includes a closing solenoid valve and an opening solenoid valve, which are respectively fixedly arranged on the side of the closing latch and the opening latch away from the closing positioning disk and the opening positioning disk, and the closing solenoid valve and the opening solenoid valve respectively drive the closing latch and the opening latch to disengage from the closing positioning disk and the opening positioning disk.

[0007] Preferably, the energy storage assembly further comprises a force storage disc, which is axially slidably sleeved on the energy storage shaft, and a spring is arranged between the force storage disc and the energy storage shaft, and the spring drives the force storage disc to fit the cam disc; The cam disc is rotatably sleeved on the energy storage shaft, and the energy storage disc causes the cam disc to rotate in one direction.

[0008] Preferably, the energy storage assembly also includes a positioning rod, which is fixedly arranged parallel to the energy storage shaft. When the cam plate rotates upward with the energy storage shaft, it hits the positioning rod. At this time, the cam plate is blocked by the positioning rod and cannot continue to rotate, but the energy storage shaft can continue to rotate.

[0009] Preferably, a plurality of grooves are provided in a circular array on one side of the cam disc facing the force storage disc, and a plurality of positioning blocks are provided in a circular array on one side of the force storage disc facing the cam disc. The number of the positioning blocks is equal to the number of the grooves and they are arranged one-to-one. The positioning blocks are embedded in the grooves of the cam disc, and the top surface of the positioning blocks is a slope.

[0010] Preferably, a damping assembly is arranged between the cam disc and the force storage disc, and the damping assembly includes a damping strip and a damping groove. The damping strip is radially fixedly arranged on the side of the cam disc facing the force storage disc along the energy storage axis, and the damping groove is radially fixedly arranged on the side of the force storage disc facing the cam disc along the energy storage axis, and the damping strip is embedded in the damping groove.

[0011] Preferably, the closing positioning plate has a plurality of positioning grooves in a circular array on one side facing the closing latch, the closing latch is embedded in the positioning groove of the closing positioning plate, the bottom surface of the positioning groove is an inclined surface, and the end surface of the closing latch embedded in the positioning groove is an inclined surface corresponding to the bottom surface of the positioning groove.

[0012] Preferably, the spring disc assembly includes a spring disc housing and a spring leaf, the spring disc housing is a hollow cylindrical shell, the spring leaf is spiral and arranged in the spring disc housing, one end of the spring leaf is fixedly connected to the energy storage shaft, and the other end is fixedly connected to the spring disc housing.

[0013] Preferably, the spring disc housing is rotatably arranged on the energy storage shaft, and a ratchet mechanism is arranged between the spring disc housing and the energy storage shaft, and the ratchet mechanism enables the spring disc housing to rotate unidirectionally relative to the energy storage shaft.

[0014] Through the above technical solution, the beneficial effects of the present invention are: Compared with the CT mechanism and VS1 bulk mechanism, the structure of the present invention has fewer parts and is simple to manufacture and assemble. At the same time, the spring disk is used to store energy, which is less likely to fail than the tension spring. When storing energy at the same time, the energy storage shaft can still rotate and store energy after the cam disk is positioned to ensure sufficient energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 The enlarged view of point A in the middle; Figure 4 It is a structural schematic diagram of the cam plate of the present invention; Figure 5 It is a structural schematic diagram of the power storage disc of the present invention; Figure 6 It is a structural schematic diagram of the closing positioning disk of the present invention; Figure 7 It is a structural schematic diagram of the closing latch of the present invention; Figure 8 It is a structural schematic diagram of the opening positioning disk of the present invention; Fig. 9 It is a structural schematic diagram of the opening latch of the present invention; Among them: 1-energy storage shaft; 2-cam plate; 3-spring plate assembly; 4-opening and closing rotating shaft; 5-closing latch; 6-opening latch; 7-output shaft; 8-upper connecting rod; 9-lower connecting rod; 10-driving shaft; 11-guide rod; 12-closing positioning plate; 13-opening positioning plate; 14-closing solenoid valve; 15-opening solenoid valve; 16-energy storage plate; 17-positioning rod. DETAILED DESCRIPTION

[0016] 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments of the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0018] Embodiment 1: like Figure 1-Figure 9 As shown, an operating mechanism of a high-voltage AC vacuum circuit breaker includes an energy storage component, a switch-on and switch-off component, and an output component; The energy storage assembly includes an energy storage shaft 1, a cam plate 2 and a spring plate assembly 3. The two spring plate assemblies 3 are respectively arranged at both ends of the energy storage shaft 1, and the cam plate 2 is arranged in the middle of the energy storage shaft 1. The switch-on / off assembly comprises a switch-on / off rotating shaft 4, a switch-on latch 5 and a switch-off latch 6. The switch-on latch 5 and the switch-off latch 6 are both rotated and axially slidably sleeved on the switch-on / off rotating shaft 4. After the energy storage assembly stores energy, the switch-on latch 5 abuts against the energy storage assembly. The output assembly includes an output shaft 7, an upper connecting rod 8, a lower connecting rod 9 and a drive shaft 10. The upper end of the upper connecting rod 8 is fixedly sleeved on the separation and combination rotating shaft 4, and the lower end is hinged to the upper end of the lower connecting rod 9 through the drive shaft 10. The lower end of the lower connecting rod 9 is hinged to one side of the output shaft 7. The drive shaft 10 is arranged corresponding to the cam disc 2. When the cam disc 2 rotates downward, it hits the drive shaft 10 and drives the drive shaft 10 to translate. At this time, the separation latch 6 is locked with the separation and combination rotating shaft 4.

[0019] Compared with the CT mechanism and VS1 bulk mechanism, the structure of the present invention has fewer parts and is simple to manufacture and assemble. At the same time, the spring disk is used to store energy, which is less likely to fail than the tension spring. When storing energy at the same time, after the cam disk 2 is positioned, the energy storage shaft 1 can still rotate to store energy to ensure that there is enough energy.

[0020] In order to enable the closing latch 5 and the opening latch 6 to translate relative to the closing and opening shaft 4 and lock the open and closed state, the closing and opening assembly also includes a guide rod 11, a closing positioning disk 12 and an opening positioning disk 13. The closing positioning disk 12 and the opening positioning disk 13 are respectively fixedly sleeved on the energy storage shaft 1 and the closing and opening shaft 4. The guide rod 11 is arranged parallel to one side of the closing and opening shaft 4. The closing latch 5 and the opening latch 6 are both axially slidably sleeved on the guide rod 11. Springs are arranged between the closing latch 5 and the opening latch 6 and the guide rod 11. The springs drive the closing latch 5 or the opening latch 6 to be embedded in the closing positioning disk 12 or the opening positioning disk 13.

[0021] In order to facilitate the control of the translation of the closing latch 5 and the opening latch 6, the closing and opening assembly also includes a closing solenoid valve 14 and an opening solenoid valve 15. The closing solenoid valve 14 and the opening solenoid valve 15 are respectively fixedly arranged on the side of the closing latch 5 and the opening latch 6 away from the closing positioning disk 12 and the opening positioning disk 13. The closing solenoid valve 14 and the opening solenoid valve 15 respectively drive the closing latch 5 and the opening latch 6 to disengage from the closing positioning disk 12 and the opening positioning disk 13.

[0022] In order to enable the energy storage shaft 1 to continue to rotate upward after the cam disc 2 is in place during energy storage, and to drive the cam disc 2 to rotate with the energy storage shaft 1 when the energy storage shaft 1 rotates downward, the energy storage assembly also includes a force storage disc 16, which is axially slidably sleeved on the energy storage shaft 1, and a spring is arranged between the force storage disc 16 and the energy storage shaft 1, and the spring drives the force storage disc 16 to fit the cam disc 2; The cam plate 2 is rotatably sleeved on the energy storage shaft 1, and the energy storage plate 16 causes the cam plate 2 to rotate in one direction.

[0023] In order to limit the energy storage position of the cam disc 2, the energy storage assembly also includes a positioning rod 17, which is fixedly arranged parallel to the energy storage shaft 1. When the cam disc 2 rotates upward with the energy storage shaft 1, it hits the positioning rod 17. At this time, the cam disc 2 is blocked by the positioning rod 17 and cannot continue to rotate, but the energy storage shaft 1 can continue to rotate.

[0024] In order to optimize the product structure, in this embodiment, a plurality of grooves are provided in a circular array on one side of the cam disc 2 facing the force storage disc 16, and a plurality of positioning blocks are provided in a circular array on one side of the force storage disc 16 facing the cam disc 2. The number of the positioning blocks is equal to the number of the grooves and they are arranged one-to-one. The positioning blocks are embedded in the grooves of the cam disc 2, and the top surface of the positioning blocks is a slope.

[0025] In order to enable the energy storage shaft 1 to drive the cam plate 2 to rotate upward, a damping assembly is arranged between the cam plate 2 and the force storage plate 16, and the damping assembly includes a damping strip and a damping groove. The damping strip is radially fixedly arranged on the side of the cam plate 2 facing the force storage plate 16 along the energy storage shaft 1, and the damping groove is radially fixedly arranged on the side of the force storage plate 16 facing the cam plate 2 along the energy storage shaft 1, and the damping strip is embedded in the damping groove.

[0026] There are multiple positioning grooves in a circular array on one side of the closing positioning disk 12 facing the closing latch 5. The closing latch 5 is embedded in the positioning groove of the closing positioning disk 12. The bottom surface of the positioning groove is an inclined surface, and the end surface of the closing latch 5 embedded in the positioning groove is an inclined surface corresponding to the bottom surface of the positioning groove.

[0027] In this embodiment, the spring disc assembly 3 includes a spring disc housing and a spring leaf. The spring disc housing is a hollow cylindrical shell. The spring leaf is spiral and arranged in the spring disc housing. One end of the spring leaf is fixedly connected to the energy storage shaft 1 and the other end is fixedly connected to the spring disc housing.

[0028] In order to control the elastic force of the spring leaf, the spring disc housing is rotatably arranged on the energy storage shaft 1 , and a ratchet mechanism is arranged between the spring disc housing and the energy storage shaft 1 , so that the ratchet mechanism enables the spring disc housing to rotate unidirectionally relative to the energy storage shaft 1 .

[0029] When storing energy, the energy storage shaft 1 drives the cam disc 2 to rotate upward, and the cam disc 2 stops rotating when it reaches the positioning rod 17. When the energy storage shaft 1 continues to rotate, the positioning block of the power storage disc 16 can be removed from the groove of the cam disc 2 due to its inclined end face, ensuring that the energy storage shaft 1 continues to rotate. When sufficient energy is stored, the energy storage shaft 1 stops rotating, and the positioning block of the power storage disc 16 is embedded in the groove of the cam disc 2, ensuring that the energy storage shaft 1 can drive the cam disc 2 to rotate downward. At the same time, the closing latch 5 is embedded in the positioning groove of the closing positioning disc 12, so that the energy storage shaft 1 maintains the current position.

[0030] When closing the circuit breaker, the closing electromagnet is activated, the closing latch 5 translates the spring and disengages from the closing positioning plate 12, the energy storage shaft 1 drives the cam plate 2 to rotate downward, and the cam plate 2 reaches the drive shaft 10, thereby driving the output shaft 7 to rotate. At this time, the opening latch 6 is driven by the spring to be embedded in the opening positioning plate 13.

[0031] When opening the gate, the opening electromagnet is started, the opening latch 6 translates the spring and disengages from the opening positioning plate 13. At this time, the energy storage shaft 1 drives the cam plate 2 to rotate upward through the damping assembly, and then enters the energy storage state.

[0032] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An operating mechanism for a high voltage AC vacuum circuit breaker, characterized in that: Including energy storage components, opening and closing components and output components; The energy storage assembly comprises an energy storage shaft (1), a cam plate (2) and a spring plate assembly (3), wherein the two spring plate assemblies (3) are respectively arranged at two ends of the energy storage shaft (1), and the cam plate (2) is arranged in the middle of the energy storage shaft (1); The switch-on / off assembly comprises a switch-on / off rotating shaft (4), a switch-on latch (5) and a switch-off latch (6); the switch-on latch (5) and the switch-off latch (6) are both rotatable and axially slidably sleeved on the switch-on / off rotating shaft (4); after the energy storage assembly stores energy, the switch-on latch (5) abuts against the energy storage assembly; The output assembly comprises an output shaft (7), an upper connecting rod (8), a lower connecting rod (9) and a drive shaft (10); the upper end of the upper connecting rod (8) is fixedly sleeved on the separation and combination rotating shaft (4), and the lower end is hinged to the upper end of the lower connecting rod (9) through the drive shaft (10); the lower end of the lower connecting rod (9) is hinged to one side of the output shaft (7); the drive shaft (10) and the cam plate (2) are arranged correspondingly; when the cam plate (2) rotates downward, it abuts against the drive shaft (10) and drives the drive shaft (10) to translate; at this time, the separation latch (6) is locked with the separation and combination rotating shaft (4).

2. The operating mechanism of a high-voltage AC vacuum circuit breaker according to claim 1, characterized in that: The switch-opening and closing assembly further comprises a guide rod (11), a switch-closing positioning plate (12) and a switch-opening positioning plate (13); the switch-closing positioning plate (12) and the switch-opening positioning plate (13) are respectively fixedly sleeved on the energy storage shaft (1) and the switch-opening rotating shaft (4); the guide rod (11) is arranged parallel to one side of the switch-opening rotating shaft (4); the switch-closing latch (5) and the switch-opening latch (6) are both axially slidably sleeved on the guide rod (11); a spring is arranged between the switch-closing latch (5) and the switch-opening latch (6) and the guide rod (11); the spring drives the switch-closing latch (5) or the switch-opening latch (6) to be embedded in the switch-closing positioning plate (12) or the switch-opening positioning plate (13).

3. The operating mechanism of a high voltage AC vacuum circuit breaker according to claim 2, characterized in that: The closing and opening assembly further comprises a closing solenoid valve (14) and an opening solenoid valve (15), wherein the closing solenoid valve (14) and the opening solenoid valve (15) are respectively fixedly arranged on a side of the closing latch (5) and the opening latch (6) away from the closing positioning disk (12) and the opening positioning disk (13), and the closing solenoid valve (14) and the opening solenoid valve (15) respectively drive the closing latch (5) and the opening latch (6) to separate from the closing positioning disk (12) and the opening positioning disk (13).

4. The operating mechanism of a high-voltage AC vacuum circuit breaker according to claim 2, characterized in that: The energy storage assembly further comprises a force storage disc (16), the force storage disc (16) being axially slidably sleeved on the energy storage shaft (1), a spring being arranged between the force storage disc (16) and the energy storage shaft (1), the spring driving the force storage disc (16) to fit against the cam disc (2); The cam plate (2) is rotatably sleeved on the energy storage shaft (1), and the energy storage plate (16) causes the cam plate (2) to rotate in one direction.

5. The operating mechanism of a high-voltage AC vacuum circuit breaker according to claim 4, characterized in that: The energy storage assembly further comprises a positioning rod (17), wherein the positioning rod (17) is fixedly arranged parallel to the top of the energy storage shaft (1), and when the cam plate (2) rotates upward along with the energy storage shaft (1), it abuts against the positioning rod (17). At this time, the cam plate (2) is blocked by the positioning rod (17) and cannot continue to rotate, while the energy storage shaft (1) can continue to rotate.

6. The operating mechanism of a high-voltage AC vacuum circuit breaker according to claim 4, characterized in that: A plurality of grooves are arranged in a circumferential array on one side of the cam disc (2) facing the force storage disc (16); a plurality of positioning blocks are arranged in a circumferential array on one side of the force storage disc (16) facing the cam disc (2); the number of the positioning blocks is equal to the number of the grooves and they are arranged in a one-to-one correspondence; the positioning blocks are embedded in the grooves of the cam disc (2); and the top surfaces of the positioning blocks are inclined surfaces.

7. The operating mechanism of a high-voltage AC vacuum circuit breaker according to claim 6, characterized in that: A damping assembly is provided between the cam disc (2) and the force storage disc (16), the damping assembly comprising a damping strip and a damping groove, the damping strip being fixedly provided along the radial direction of the energy storage axis (1) on a side of the cam disc (2) facing the force storage disc (16), the damping groove being fixedly provided along the radial direction of the energy storage axis (1) on a side of the force storage disc (16) facing the cam disc (2), and the damping strip being embedded in the damping groove.

8. The operating mechanism of a high-voltage AC vacuum circuit breaker according to claim 4, characterized in that: The closing positioning plate (12) has a plurality of positioning grooves in a circumferential array on one side facing the closing latch (5), the closing latch (5) is embedded in the positioning groove of the closing positioning plate (12), the bottom surface of the positioning groove is an inclined surface, and the end surface of the closing latch (5) where it is embedded in the positioning groove is an inclined surface corresponding to the bottom surface of the positioning groove.

9. The operating mechanism of a high-voltage AC vacuum circuit breaker according to claim 1, characterized in that: The spring disc assembly (3) comprises a spring disc housing and a spring leaf, the spring disc housing being a hollow cylindrical shell, the spring leaf being spirally shaped and arranged in the spring disc housing, one end of the spring leaf being fixedly connected to the energy storage shaft (1) and the other end being fixedly connected to the spring disc housing.

10. The operating mechanism of a high-voltage AC vacuum circuit breaker according to claim 9, characterized in that: The spring disc housing is rotatably arranged on the energy storage shaft (1), and a ratchet mechanism is arranged between the spring disc housing and the energy storage shaft (1), wherein the ratchet mechanism enables the spring disc housing to rotate unidirectionally relative to the energy storage shaft (1).

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