Disconnecting switch driving structure, operating mechanism and switch equipment

Abstract

The utility model discloses an isolating switch driving structure, an operating mechanism and a switch device, and relates to the field of electrical switchs.The isolating switch driving structure comprises an isolating rotating shaft, an elastic force maintaining assembly and a rotation driving assembly, the rotation driving assembly comprises a motor and a rotating part, and the rotating part is rotationally connected with the isolating rotating shaft; the motor is used for driving the rotating part to rotate, the isolation rotating shaft is provided with a driving transmission part, the rotating part is fixedly provided with a driven transmission part, and the rotating part can drive the isolation rotating shaft to rotate in a reciprocating mode through the driving transmission part, the driven transmission part and the driven transmission part; the elastic force keeping assembly is used for forcing the isolation rotating shaft to be kept in a closing or opening state, and the maximum elastic deformation state of the elastic force keeping assembly corresponds to the middle section position of the closing and opening rotation stroke of the isolation rotating shaft. The manual operation requirement of the electrically-driven disconnecting switch can be met.

Description

Technical Field

[0001] The present application relates to the field of electrical switches, and more particularly to a disconnecting switch driving structure, an operating mechanism, and a switching device. Background Art

[0002] Circuit breakers, disconnecting switches, etc. in electrical switches often need to cooperate to control the circuit. In order to facilitate the switching operations of electrical switches such as circuit breakers and disconnecting switches, electrical components such as circuit breakers and disconnecting switches are often arranged in an integrated structure to facilitate the switching operations of the circuit breaker and the disconnecting switch.

[0003] The opening and closing driving methods of disconnecting switches include manual operation and electric drive. Among them, electric drive is safer and can achieve remote control. However, for a disconnecting switch with electric drive, once the electric drive structure fails, the disconnecting switch cannot function, which is rather inconvenient. Summary of the Utility Model

[0004] In order to solve the problem that it is difficult for a disconnecting switch to function when the electric drive structure fails, the present application provides a disconnecting switch driving structure, an operating mechanism, and a switching device.

[0005] The disconnecting switch driving structure, operating mechanism, and switching device provided by the present application adopt the following technical solutions:

[0006] A disconnecting switch driving structure includes an isolating rotating shaft, an elastic force maintaining component, and a rotating driving component. The rotating driving component includes a motor and a rotating member. The rotating member is rotatably connected to the isolating rotating shaft. The motor is used to drive the rotating member to rotate. The isolating rotating shaft is provided with a driving transmission member, and the rotating member is fixedly provided with a driven transmission member. The rotating member can drive the isolating rotating shaft to rotate reciprocally through the driving and driven transmission members. The elastic force maintaining component is used to force the isolating rotating shaft to maintain in the closed or open state, and the maximum elastic deformation state of the elastic force maintaining component corresponds to the middle position of the closing and opening rotation stroke of the isolating rotating shaft.

[0007] By adopting the above technical solution, during the use of the isolating switch drive structure, the isolating shaft is driven to rotate by the rotating drive component, thereby rotating the isolating shaft to switch between the closed and open states. In the process of the rotating drive component driving the isolating shaft to rotate and switch from the closed state to the open state, the motor of the rotating drive component drives the rotating part to rotate, and the rotating part drives the driven transmission part on the isolating shaft through the active transmission part, thereby driving the isolating shaft to rotate to overcome the elastic force of the elastic force holding component. When the isolating shaft rotates a certain angle, the elastic force of the elastic force holding component reaches the maximum value. As the isolating shaft continues to rotate, the elastic potential energy of the elastic force holding component is released outward, causing the isolating shaft to rotate faster to the open state. Conversely, the rotating drive component can reversely drive the isolating shaft to rotate and switch from the open state to the closed state.

[0008] Since the rotating part and the isolation shaft are connected in rotation, and the motor can drive the rotating part to rotate back and forth, when the isolation shaft rotates to the closing or opening state, the motor is controlled to drive the rotating part to rotate to the middle position of the reciprocating stroke. In this case, an idle stroke is formed between the active transmission member and the driven transmission member. Therefore, when a circuit failure occurs in the rotation drive component, the isolation shaft can be manually operated to rotate without being hindered by the rotation drive component, so that the isolation switch can still function after the drive structure fails.

[0009] Optionally, it also includes a reset microswitch, a closing microswitch and an opening microswitch. The isolating shaft is fixedly provided with a closing limiter and an opening limiter. When the isolating shaft is in a closed state, the closing limiter triggers the closing microswitch; when the isolating shaft is in an open state, the closing limiter triggers the opening microswitch; the rotating component is provided with a reset trigger, and the reset trigger can trigger the reset microswitch. The closing microswitch and the opening microswitch are both used to control the motor to drive the rotating component to rotate in the opposite direction and reset.

[0010] By adopting the above technical solution, the rotating component drives the driven transmission component on the isolation shaft through the active transmission component, thereby driving the isolation shaft to overcome the elastic force of the elastic holding component and rotate. When the isolation shaft rotates a certain angle, the elastic force of the elastic holding component reaches a maximum value. As the isolation shaft continues to rotate, the elastic potential energy of the elastic holding component is released outward, causing the isolation shaft to rotate faster to the open state, and the open limit member triggers the open micro switch, so that the motor drives the rotating component to rotate in the opposite direction and reset, until the reset trigger member triggers the reset micro switch, thereby stopping the motor.

[0011] Optionally, the rotating component is a driven gear, the driven gear is rotationally connected to the isolation shaft, and the output shaft of the motor is provided with a driving gear, and the driving gear is meshed with the driven gear.

[0012] By adopting the above technical solution, the motor drives the driven gear to rotate through the driving gear, so that the driving transmission member on the driven gear drives the driven transmission member on the isolation shaft, thereby rotating the isolation shaft.

[0013] Optionally, the rotating component is a driven pulley, which is rotatably connected to the isolation shaft, and a driving pulley is provided at the output end of the motor, and a synchronous belt is wound around the driving pulley and the driven pulley.

[0014] By adopting the above technical solution, the motor drives the driven pulley to rotate through the driving pulley and the synchronous belt, so that the driving transmission member on the driven pulley drives the driven transmission member on the isolation shaft, thereby rotating the isolation shaft.

[0015] Optionally, the rotating component is a driven crank, one end of which is rotatably mounted on the isolation shaft, an active crank is fixedly provided at the output end of the motor, and a connecting rod is hingedly provided between the active crank and the driven crank.

[0016] By adopting the above technical solution, the motor drives the driven crank to rotate through the active crank and the connecting rod, so that the active transmission member on the driven crank drives the driven transmission member on the isolation shaft, thereby rotating the isolation shaft.

[0017] Optionally, the driven transmission member is a pin, which is perpendicular to the center line of the isolation shaft; the active transmission member is a fan-shaped block, and the center line of curvature of the fan-shaped block coincides with the axis of the isolation shaft.

[0018] By adopting the above technical solution, during the rotation of the rotating component, the pin is driven to rotate by the sector block, thereby driving the isolating shaft to rotate, so as to realize the switching of the closing and opening states of the isolating shaft. When controlling the isolating shaft to perform the closing and opening actions, the active transmission member needs to push the driven transmission member from different directions. By setting the active transmission member as a sector block, the idling stroke of the sector block during the switching process of different directions can be reduced, so that the sector block can enter the state of pushing the pin as soon as possible when rotating, which is beneficial to the switching speed of the isolating switch.

[0019] Optionally, the elastic force retaining assembly includes a telescopic rod, an articulated arm and a retaining compression spring, the articulated arm is fixed to the isolation shaft, one end of the telescopic rod is hinged to the articulated arm, and the other end of the telescopic rod is used to be hinged to an external mounting structure; the retaining compression spring is sleeved on the telescopic rod, and limiting parts are respectively provided at both ends of the telescopic rod, and the retaining compression spring is located between the two limiting parts; the shortest length state of the telescopic rod corresponds to the middle section of the rotation stroke of the telescopic rod.

[0020] By adopting the above technical solution, during the process of switching the isolation rotating shaft between the closing and opening states, the isolation rotating shaft drives the articulated arm to rotate, thereby causing the articulated arm to drive the telescopic rod to expand and contract. During the process of the telescopic rod expanding and contracting, the limiting parts at both ends of the telescopic rod approach or move away from each other, thereby changing the elastic deformation amount of the holding compression spring. The elastic deformation force of the holding compression spring can force the isolation rotating shaft to maintain the closing or opening state.

[0021] Optionally, a fixed connection sleeve is provided at one end of the articulated arm away from the telescopic rod. The fixed connection sleeve is fixedly sleeved on the isolation rotating shaft. The pin is connected through the peripheral wall of the fixed connection sleeve, and the pin is inserted into the isolation rotating shaft.

[0022] By adopting the above technical solution, while the pin serves as a driven transmission part, it also serves as a connecting part for keeping the fixed connection sleeve and the isolation rotating shaft connected and fixed.

[0023] An operating mechanism includes an operating box and a disconnector driving structure as described in any one of the above. The disconnector driving structure is installed inside the operating box. The isolation rotating shafts of the disconnector driving structure are respectively rotatably connected to two opposite side walls of the operating box, and the main body part of the isolation rotating shaft is located inside the operating box.

[0024] By adopting the above technical solution, the disconnector driving structure is installed inside the operating box, and the operating box can be used to install other electrical switch structures.

[0025] A switch device includes the above operating mechanism, and a circuit breaker is installed on the operating box of the operating mechanism.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Since the rotating part and the isolation shaft are set to be rotatably connected, and after the isolation rotating shaft rotates to the closing or opening state, the closing microswitch or the opening microswitch can control the motor to drive the rotating part to rotate to the state where the reset trigger member triggers the reset microswitch. In this case, an idle stroke is formed between the driving transmission part and the driven transmission part. Therefore, when a circuit fault occurs in the rotation driving assembly, the isolation rotating shaft can be manually rotated.

[0028] 2. By setting the driving transmission part as a sector block, the idle stroke during the switching process in different forward and reverse directions of the sector block can be reduced, enabling the sector block to quickly enter the state of pushing the pin when rotating, which is beneficial to the switching speed of the disconnector. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the installation and use state of the disconnector driving structure in Embodiment 1.

[0030] Figure 2 It is a schematic diagram in Embodiment 1 for reflecting the positional relationship between the active transmission part and the driven transmission part.

[0031] Figure 3 It is a schematic diagram in Embodiment 2 for reflecting the positional relationship between the active transmission part and the driven transmission part.

[0032] Figure 4 It is a schematic diagram in Embodiment 3 for reflecting the positional relationship between the active transmission part and the driven transmission part.

[0033] Explanation of reference numerals:

[0034] 1. Isolation rotating shaft; 11. Rotating handle; 2. Elastic force maintaining assembly; 21. Telescopic rod; 211. Limiting part; 22. Hinge arm; 221. Fixed connection sleeve; 23. Holding compression spring; 3. Rotation driving assembly; 31. Motor; 321. Driven gear; 322. Driving gear; 331. Driven belt pulley; 332. Driving belt pulley; 333. Synchronous belt; 341. Driven crank; 342. Driving crank; 343. Connecting rod; 35. Active transmission part; 36. Driven transmission part; 4. Reset microswitch; 5. Closing microswitch; 6. Tripping microswitch; 7. Isolating knife; 71. Closing limiting part; 8. Tripping limiting part; 81. Sheet metal structure part; 82. Sleeve component; 9. Reset triggering part; 10. Operation box. Detailed implementation manners

[0035] The following further elaborates on this application in conjunction with the attached Figures 1-4 for a more detailed description.

[0036] Embodiment 1

[0037] The embodiment of this application discloses a disconnector driving structure. Refer to Figure 1 and Figure 2 , the disconnector driving structure includes an isolation rotating shaft 1, an elastic force maintaining assembly 2, a rotation driving assembly 3, a reset microswitch 4, a closing microswitch 5 and a tripping microswitch 6. The rotation driving assembly 3 includes a motor 31 and a rotating component. The rotating component is rotationally connected to the isolation rotating shaft 1. The motor 31 is used to drive the rotating component to rotate. The isolation rotating shaft 1 is provided with an active transmission part 35, and the rotating component is fixedly provided with a driven transmission part 36. The rotating component can drive the isolation rotating shaft 1 to rotate reciprocally through the active and driven parts and the driven transmission part 36 to realize the switching of the closing and tripping states of the isolation rotating shaft 1. The elastic force maintaining assembly 2 is used to force the isolation rotating shaft 1 to maintain the closing or tripping state, and the maximum elastic deformation state of the elastic force maintaining assembly 2 corresponds to the middle position of the closing and tripping rotation strokes of the isolation rotating shaft 1.

[0038] Refer to Figure 1, one end of the isolation rotating shaft 1 is provided with a manual driving structure. The manual driving structure is a rotating handle 11, and the rotating handle 11 is fixedly connected to the isolation rotating shaft 1. The rotating handle 11 can be rotated to drive the isolation rotating shaft 1 to rotate manually. In another embodiment, the manual driving structure can be replaced with a wrench position provided at the end of the isolation rotating shaft 1. By clamping a wrench on the wrench position, the isolation rotating shaft 1 can be driven to rotate.

[0039] Refer to Figure 1 , three isolation knives 7 are fixedly arranged on the isolation rotating shaft 1. The isolation knives 7 are sheet metal parts. One of the isolation knives 7 is bent to be provided with a limit piece, and the limit piece serves as a closing limit part 71. When the isolation rotating shaft 1 is in the closing state, the closing limit part 71 triggers the closing microswitch 5.

[0040] Refer to Figure 1 , the isolation rotating shaft 1 is fixedly provided with a tripping limit part 8. The tripping limit part 8 includes a sheet metal structural part 81, and the sheet metal structural part 81 is fixedly connected with a sleeve part 82. The sleeve part 82 is sleeved and fixed on the isolation rotating shaft 1. When the isolation rotating shaft 1 is in the tripping state, the closing limit part 71 triggers the tripping microswitch 6.

[0041] Refer to Figure 1 , the elastic holding component 2 includes a telescopic rod 21, a hinged arm 22 and a holding compression spring 23. One end of the telescopic rod 21 is hinged to the hinged arm 22, and the end of the telescopic rod 21 far from the hinged arm 22 is used for being hinged to an external mounting structure; the end of the hinged arm 22 far from the telescopic rod 21 is provided with a fixed connecting sleeve 221, and the fixed connecting sleeve 221 is fixedly sleeved on the isolation rotating shaft 1. A pin is inserted through the peripheral wall of the fixed connecting sleeve 221, and the pin is vertically inserted into the isolation rotating shaft 1. The holding compression spring 23 is sleeved on the telescopic rod 21, and limiting parts 211 are respectively arranged at both ends of the telescopic rod 21. The holding compression spring 23 is located between the two limiting parts 211; the shortest length state of the telescopic rod 21 corresponds to the middle section of the rotation stroke of the telescopic rod 21.

[0042] Refer to Figure 1 and Figure 2 , the rotating part is a driven gear 321. The driven gear 321 is rotatably connected to the isolation rotating shaft 1. The output shaft of the motor 31 is provided with a driving gear 322, and the driving gear 322 meshes with the driven gear 321. The diameter of the driven gear 321 is smaller than the diameter of the driving gear 322. The main transmission part 35 is the above-mentioned pin, and the driven transmission part 36 is a sector block. The curvature center line of the sector block coincides with the center line of the driven gear 321.

[0043] Refer to Figure 2 , the driven gear 321 is fixedly provided with a reset trigger 9. The reset trigger 9 can trigger the reset microswitch 4. Both the closing microswitch 5 and the tripping microswitch 6 are used to control the motor 31 to drive the rotating part to rotate reversely to the position where the reset microswitch 4 is triggered.

[0044] The implementation principle of a disconnector drive structure in an embodiment of this application is as follows: During the use of the disconnector drive structure, the rotation drive assembly 3 drives the isolation rotating shaft 1 to rotate, thereby rotating and switching the isolation rotating shaft 1 between the closing and opening states.

[0045] During the process of the rotation drive assembly 3 driving the isolation rotating shaft 1 to rotate and switch from the closing state to the opening state, the motor 31 of the rotation drive assembly 3 drives the driven gear 321 to rotate through the driving gear 322. The driven gear 321 drives the pin on the isolation rotating shaft 1 through the sector block, thereby driving the isolation rotating shaft 1 to rotate against the elastic force of the elastic force maintaining assembly 2. When the isolation rotating shaft 1 rotates by a certain angle, the elastic force of the elastic force maintaining assembly 2 reaches the maximum value. As the isolation rotating shaft 1 continues to rotate, the elastic potential energy of the elastic force maintaining assembly 2 is released outward, causing the isolation rotating shaft 1 to accelerate and rotate to the opening state, and causing the opening limit member 8 to trigger the opening microswitch 6, thereby causing the motor 31 to drive the driven gear 321 to rotate in the reverse direction and reset until the reset trigger member 9 triggers the reset microswitch 4, and further causing the motor 31 to stop operating. Relatively, the rotation drive assembly 3 can reversely drive the isolation rotating shaft 1 to rotate and switch from the opening state to the closing state.

[0046] Since the rotating part and the isolation shaft are provided with a rotating connection, and when the isolation rotating shaft 1 rotates to the closing or opening state, the closing microswitch 5 or the opening microswitch 6 can control the motor 31 to drive the driven gear 321 to rotate and reset. In this case, an idle stroke is formed between the driving transmission member 35 and the driven transmission member 36. Therefore, when a circuit failure occurs in the rotation drive assembly 3, the isolation rotating shaft 1 can be manually operated to rotate without being obstructed by the rotation drive assembly 3, enabling the disconnector drive structure to meet the requirements of manual operation.

[0047] It should be noted that in this embodiment, the reset operation of the motor after performing the closing and opening operations is controlled by the electrical signals of the closing microswitch, the opening microswitch, and the reset microswitch. In another implementation manner, the microswitch can be replaced with a proximity switch. Or, the reset operation of the motor can be controlled by a preset control program.

[0048] This embodiment also discloses an operating mechanism, including an operating box 10 and the above-mentioned disconnector drive structure. The disconnector drive structure is installed inside the operating box 10. The isolation rotating shafts 1 of the disconnector drive structure are respectively rotationally connected to the two opposite side walls of the operating box 10. The main body part of the isolation rotating shaft 1 is located inside the operating box 10. The closing microswitch 5, the opening microswitch 6, and the reset microswitch 4 are all installed inside the operating box 10, and the rotating handle 11 is located outside the operating box 10.

[0049] This embodiment also discloses a switching device, including the above-mentioned operating mechanism, and a circuit breaker is installed in the operating box 10 of the operating mechanism.

[0050] Embodiment 2

[0051] Referring to Figure 3 , the difference between this embodiment and Embodiment 1 is that the rotating component in this embodiment is a driven pulley 331, the driven pulley 331 is rotatably connected to the isolation rotating shaft 1, the output end of the motor 31 is provided with a driving pulley 332, the diameter of the driving pulley 332 is smaller than that of the driven pulley 331, and a synchronous belt 333 is wound around the driving pulley 332 and the driven pulley 331 together. The motor 31 drives the driven gear 321 to rotate through the driving pulley 332 and the synchronous belt 333.

[0052] Embodiment 3

[0053] Referring to Figure 4 , the difference between this embodiment and Embodiment 1 is that the rotating component is a driven crank 341, one end of the driven crank 341 is rotatably installed on the isolation rotating shaft 1, and the end of the driven crank 341 away from the isolation rotating shaft 1 serves as a reset trigger 9. The output end of the motor 31 is fixedly provided with a driving crank 342, the length of the driving crank 342 is smaller than that of the driven crank 341, and a connecting rod 343 is jointly hinged between the driving crank 342 and the driven crank 341. The motor 31 drives the driven crank 341 to rotate through the driving crank 342 and the connecting rod 343.

[0054] In addition, the driving transmission member 35 and the driven transmission member 36 in this embodiment are different from those in Embodiment 1. In this embodiment, a sector block is used as the driven transmission member 36, the sector block is integrally arranged on the outer peripheral surface of the fixed connection sleeve 221, and a screw is threadedly connected to the driven crank 341, and the screw serves as the driving transmission member 35.

[0055] The above are all the preferred embodiments of this application. The protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An isolating switch driving structure, characterized in that: It includes an isolating rotating shaft (1), an elastic force maintaining component (2), and a rotating driving component (3). The rotating driving component (3) includes a motor (31) and a rotating member. The rotating member is rotatably connected to the isolating rotating shaft (1). The motor (31) is used to drive the rotating member to rotate. The isolating rotating shaft (1) is provided with a driving transmission member (35), and the rotating member is fixedly provided with a driven transmission member (36). The rotating member can drive the isolating rotating shaft (1) to rotate reciprocally through the driving and driven members and the driven transmission member (36). The elastic force maintaining component (2) is used to force the isolating rotating shaft (1) to maintain the closing or opening state. The maximum elastic deformation state of the elastic force maintaining component (2) corresponds to the middle position of the closing and opening rotation stroke of the isolating rotating shaft (1).

2. The disconnector drive structure according to claim 1, characterized in that: It further includes a reset microswitch (4), a closing microswitch (5), and an opening microswitch (6). The isolating rotating shaft (1) is fixedly provided with a closing limiting member (71) and an opening limiting member (8). When the isolating rotating shaft (1) is in the closing state, the closing limiting member (71) triggers the closing microswitch (5). When the isolating rotating shaft (1) is in the opening state, the closing limiting member (71) triggers the opening microswitch (6). The rotating member is provided with a reset triggering member (9), and the reset triggering member (9) can trigger the reset microswitch (4). Both the closing microswitch (5) and the opening microswitch (6) are used to control the motor (31) to drive the rotating member to rotate reversely for resetting.

3. The disconnector drive structure according to claim 1, characterized in that: The rotating member is a driven gear (321). The driven gear (321) is rotatably connected to the isolating rotating shaft (1). The output shaft of the motor (31) is provided with a driving gear (322), and the driving gear (322) meshes with the driven gear (321).

4. The disconnector drive structure according to claim 1, characterized in that: The rotating member is a driven pulley (331). The driven pulley (331) is rotatably connected to the isolating rotating shaft (1). The output end of the motor (31) is provided with a driving pulley (332), and a synchronous belt (333) is wound around the driving pulley (332) and the driven pulley (331) together.

5. A disconnector drive structure according to claim 1, characterized in that: The rotating member is a driven crank (341). One end of the driven crank (341) is rotatably installed on the isolating rotating shaft (1). The output end of the motor (31) is fixedly provided with a driving crank (342), and a connecting rod (343) is jointly hinged between the driving crank (342) and the driven crank (341).

6. The disconnector drive structure according to claim 1, wherein: The driven transmission member (36) is a pin, and the pin is perpendicular to the center line of the isolating rotating shaft (1). The driving transmission member (35) is a sector block, and the curvature center line of the sector block coincides with the axis of the isolating rotating shaft (1).

7. The disconnector drive structure according to claim 6, characterized in that: The elastic force maintaining assembly (2) includes a telescopic rod (21), a hinge arm (22), and a maintaining compression spring (23). The hinge arm (22) is fixed to the isolation rotating shaft (1). One end of the telescopic rod (21) is hinged to the hinge arm (22), and the other end of the telescopic rod (21) is used for being hinged to an external mounting structure. The maintaining compression spring (23) is sleeved on the telescopic rod (21). Limiting parts (211) are respectively arranged at both ends of the telescopic rod (21), and the maintaining compression spring (23) is located between the two limiting parts (211). The shortest length state of the telescopic rod (21) corresponds to the middle section of the rotation stroke of the telescopic rod (21).

8. A disconnector drive structure according to claim 7, characterized in that: A fixed connection sleeve (221) is arranged at the end of the hinge arm (22) far away from the telescopic rod (21). The fixed connection sleeve (221) is fixedly sleeved on the isolation rotating shaft (1). The pin is connected through the peripheral wall of the fixed connection sleeve (221), and the pin is inserted into the isolation rotating shaft (1).

9. An operating mechanism, characterized in that: It includes an operation box (10) and an isolating switch driving structure according to any one of claims 1-7. The isolating switch driving structure is installed in the operation box (10). The isolation rotating shafts (1) of the isolating switch driving structure are respectively rotatably connected to two opposite side walls of the operation box (10), and the main body part of the isolation rotating shaft (1) is located inside the operation box (10).

10. A switching device, characterized in that: It includes the operating mechanism in claim 9, and a circuit breaker is installed on the operation box (10) of the operating mechanism.

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