Anti-sticking isolating switch operating mechanism and isolating switch

Abstract

The utility model discloses a kind of anti-jamming disconnecting switch operating mechanism and disconnecting switch, pass through its specific transmission groove structure and action time sequence separation, before energy storage spring over dead point position, by the power of motor is acted on by actuating column to drive operating shaft rotation in action concave point, complete first half course switching action, once energy storage spring over dead point position, its stored energy will be released momentarily, drive operating shaft fast, automatically complete switch state switching second half course, in the second half course of energy storage spring fast action, actuating column is in the position of unable to interfere with shaft joint turntable free rotation, fundamentally avoid the rigid interference and jamming phenomenon generated when transmission structure in spring over dead point high-speed action in traditional design, ensure that action is absolutely smooth, disconnecting switch switching time is also effectively shortened, while the mechanical life of operating mechanism key component is greatly extended, the stability and reliability of overall action are fundamentally improved.

Description

Technical Field

[0001] This utility model relates to the field of disconnecting switch technology, specifically to an anti-jamming disconnecting switch operating mechanism and a disconnecting switch. Background Technology

[0002] A disconnecting switch is a switchgear used to isolate power sources and disconnect or connect circuits under no-load operation (no current or very low current). Disconnecting switches do not have arc-extinguishing devices, so operation under load is strictly prohibited. After the disconnecting switch is opened, a visible air gap must be formed to ensure the isolation effect.

[0003] With the increasing demands for intelligent power distribution and consumption in power grids, electrically operated components have been introduced into disconnecting switches to realize their electric closing and opening functions. To ensure that the electric and manual closing / opening operations of the disconnecting switch do not interfere with each other, a corresponding clutch structure needs to be installed on the operating mechanism of the disconnecting switch so that manual closing / opening does not affect the operation of the electrically operated components. Currently, the clutch structure in the existing disconnecting switch operating mechanism not only suffers from numerous components and unstable transmission, but also exhibits jamming during electric switching. Because the disconnecting switch's energy storage spring immediately switches the switching state after passing its dead point, the transmission mechanism involved in electric switching interferes with it, resulting in uneven operation and prolonged switching time during electric switching. Over time, this can even affect the mechanical lifespan of the disconnecting switch operating mechanism.

[0004] In view of this, there is an urgent need to design an anti-jamming disconnect switch operating mechanism to solve the design defects of existing disconnect switches. Summary of the Invention

[0005] To solve the above problems, this utility model provides an anti-jamming disconnect switch operating mechanism and a disconnect switch.

[0006] In a first aspect, this utility model provides an anti-jamming disconnect switch operating mechanism, comprising an operating frame, an operating shaft rotatably connected to the operating frame, a motor mounted on the operating frame, and a transmission gear assembly linked to the motor. The operating frame is characterized by a switching gear disk linked to the transmission gear assembly, and the operating shaft is connected to a shaft-connected turntable. The shaft-connected turntable has a transmission groove, the inner wall of which sequentially includes a first guide surface, a transition surface, and a second guide surface. A first action recess is provided between the first guide surface and the transition surface, and a second action recess is provided between the second guide surface and the transition surface. At least one actuating post is provided on the side of the switching gear disk facing the transmission groove. The actuating post and the transmission groove are on the same action plane. During the rotation of the switching gear disk, the actuating post enters and leaves the transmission groove. When the actuating post acts on the first action recess and the second action recess respectively, it drives the shaft-connected turntable to rotate, thereby enabling the operating shaft to electrically close and electrically open the circuit breaker.

[0007] Based on the first aspect, in one possible implementation, the switching gear disk is movably connected to the operating frame via a switching shaft, the outer periphery of the switching gear disk is provided with switching external teeth, the switching external teeth mesh with the transmission gear assembly, and the actuating column is located at the outer edge of the side of the switching gear disk.

[0008] Based on the first aspect, in one possible implementation, two shaft-connected turntables are arranged in parallel on the operating shaft, a clearance cavity is provided between the two shaft-connected turntables, and the switching gear plate is clamped in the clearance cavity.

[0009] Based on the first aspect, in one possible implementation, a positioning pin is connected between the two shaft-connected turntables.

[0010] Based on the first aspect, in one possible implementation, a toggle post is provided on both sides of the switching gear.

[0011] Based on the first aspect, in one possible implementation, the operating shaft includes an operating part and a transmission part, the operating frame is provided with a corner limiting port, the transmission part is inserted and connected in the corner limiting port, and one end of the operating part is provided with a manual rotation hole.

[0012] Based on the first aspect, in one possible implementation, the transmission unit is connected to a spring drive, and the operating frame is provided with a closing spring energy storage component, a opening spring energy storage component, and an opening / closing micro switch. The closing spring energy storage component and the opening spring energy storage component are respectively linked to the spring drive, and the opening / closing micro switch is located on one side of the spring drive to detect the current opening / closing status of the isolating switch.

[0013] Based on the first aspect, in one possible implementation, the included angle between the first functional concave point and the second functional concave point is greater than 90° and less than 180°.

[0014] Based on the first aspect, in one possible implementation, three actuating posts are provided, and the actuating posts are evenly distributed on the surface of the switching gear disk.

[0015] In a second aspect, this utility model provides a disconnecting switch, including the aforementioned anti-jamming disconnecting switch operating mechanism.

[0016] The working principle of the anti-jamming disconnect switch operating mechanism in this technical solution is as follows:

[0017] When the electric closing is performed, the motor drives the switching gear plate to rotate forward through the transmission gear assembly. During the forward rotation of the switching gear plate, the actuating pin enters the transmission groove and acts on the first action recess of the transmission groove to drive the shaft-connected turntable to rotate in the opposite direction, thereby driving the operating shaft to rotate in the opposite direction to achieve electric closing. After closing is completed, the switching gear plate continues to rotate forward, causing the actuating pin to leave the transmission groove, without affecting the manual opening of the disconnecting switch.

[0018] When the electric circuit breaker is opened, the motor drives the switching gear plate to rotate in the reverse direction through the transmission gear assembly. During the reverse rotation of the switching gear plate, the actuating pin enters the transmission groove and acts on the second action recess of the transmission groove to drive the shaft-connected turntable to rotate in the forward direction, thereby driving the operating shaft to rotate in the forward direction to achieve electric opening. After the opening is completed, the switching gear plate continues to rotate in the reverse direction, causing the actuating pin to leave the transmission groove, without affecting the manual closing of the disconnecting switch.

[0019] During the first half of the electric closing and the first half of the electric opening of the disconnecting switch operating mechanism, the operating shaft is rotated by the action column acting on the first and second action recesses of the transmission groove, respectively. After the operating shaft drives the energy storage spring of the disconnecting switch operating mechanism past the dead point (during the second half of the electric closing and the second half of the electric opening of the disconnecting switch operating mechanism), the energy storage spring quickly drives the operating shaft to rotate.

[0020] When manually closing the circuit, the operating shaft is rotated in the opposite direction by the external handle. The shaft-connected turntable will not be linked with the switching gear plate during the reverse rotation of the operating shaft, thereby realizing the engagement and disengagement between the manual closing circuit and the motor and transmission gear assembly.

[0021] When manually opening the circuit breaker, the operating shaft is rotated forward by the external handle. The shaft-connected turntable will not be linked with the switching gear plate during the forward rotation of the operating shaft, thus realizing the engagement and disengagement between the motor and the transmission gear assembly when manually opening the circuit breaker.

[0022] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0023] This utility model's anti-jamming disconnect switch operating mechanism utilizes a specific transmission groove structure (first guide surface, transition surface, second guide surface, first action recess, and second action recess) and a separate action sequence. Before the energy storage spring passes the dead center position, the motor's power drives the operating shaft to rotate via the actuating column acting on the action recess, completing the first half of the switching action. Once the energy storage spring passes the dead center position, its stored energy is released instantly, driving the operating shaft to quickly and automatically complete the second half of the switch state switching. During the second half of the energy storage spring's rapid action, the actuating column is in a position that cannot interfere with the free rotation of the shaft-connected turntable. This fundamentally avoids the rigid interference and jamming phenomenon caused by the transmission structure in traditional designs when the spring moves at high speed past the dead center, ensuring absolutely smooth operation and effectively shortening the disconnect switch switching time. At the same time, the mechanical life of key components of the operating mechanism is greatly extended, and the overall stability and reliability of the operation are fundamentally improved. Attached Figure Description

[0024] Figure 1 This is a perspective view of the disconnector switch operating mechanism according to an embodiment of the present utility model.

[0025] Figure 2 This is a perspective view of the isolating switch operating mechanism after the gearbox cover has been removed, according to an embodiment of this utility model.

[0026] Figure 3 This is a schematic diagram of the internal structure of the disconnector switch operating mechanism according to an embodiment of the present utility model.

[0027] Figure 4 This is a side view of the disconnector switch operating mechanism according to an embodiment of the present utility model.

[0028] Figure 5 for Figure 4 Sectional view of AA.

[0029] Figure 6 for Figure 4 A cross-sectional view of BB.

[0030] Figure 7 This is a perspective view of the shaft-connected turntable according to an embodiment of the present utility model.

[0031] Figure 8 This is a schematic diagram of the energy storage structure of the disconnector switch operating mechanism in an embodiment of this utility model.

[0032] Figure 9 This is a perspective view of the operating shaft, switching gear plate, and shaft-connected turntable in an embodiment of this utility model.

[0033] Figure 10This is an exploded view of the operating shaft and operating frame according to an embodiment of the present utility model. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] Example 1

[0036] Combined with appendix Figure 1 To be continued Figure 10 This utility model provides an anti-jamming isolating switch operating mechanism, comprising an operating frame 1, an operating shaft 2 rotatably connected to the operating frame 1, a motor 3 mounted on the operating frame 1, and a transmission gear assembly 4 linked to the motor 3. A switching gear disc 5, linked to the transmission gear assembly 4, is connected to the operating frame 1. A shaft-connected turntable 6 is connected to the operating shaft 2. The shaft-connected turntable 6 has a transmission groove 61. The inner wall of the transmission groove 61 sequentially includes a first guide surface 611, a transition surface 612, and a second guide surface 613. The first guide surface 611 and the transition surface 612 are connected... A first action recess 614 is provided, and a second action recess 615 is provided between the second guide surface 613 and the transition surface 612. At least one actuating post 51 is provided on the side of the switching gear disk 5 facing the transmission groove 61. The actuating post 51 and the transmission groove 61 are on the same action plane. During the rotation of the switching gear disk 5, the actuating post 51 will enter the transmission groove 61 and leave the transmission groove 61. When the actuating post 51 acts on the first action recess 614 and the second action recess 615 respectively, it drives the shaft-connected turntable 6 to rotate so as to realize the electric closing and electric opening of the operating shaft 2.

[0037] Combined with appendix Figure 1 To be continued Figure 10 The working principle of the anti-jamming disconnector switch operating mechanism in this technical solution is as follows:

[0038] When the electric closing is performed, the motor 3 drives the switching gear 5 to rotate in the forward direction through the transmission gear assembly 4. During the forward rotation of the switching gear 5, the actuating pin 51 enters the transmission groove 61 and acts on the first action recess 614 of the transmission groove 61 to drive the shaft-connected turntable 6 to rotate in the reverse direction, thereby driving the operating shaft 2 to rotate in the reverse direction to achieve electric closing. After the closing is completed, the switching gear 5 continues to rotate in the forward direction, causing the actuating pin 51 to leave the transmission groove 61, without affecting the manual opening of the disconnecting switch.

[0039] When the electric circuit breaker is opened, the motor 3 drives the switching gear 5 to rotate in the reverse direction through the transmission gear assembly 4. During the reverse rotation of the switching gear 5, the actuating pin 51 enters the transmission groove 61 and acts on the second action recess 615 of the transmission groove 61 to drive the shaft-connected turntable 6 to rotate in the forward direction, thereby driving the operating shaft 2 to rotate in the forward direction to achieve electric circuit breaker opening. After the circuit breaker is opened, the switching gear 6 continues to rotate in the reverse direction, causing the actuating pin 51 to leave the transmission groove 61, without affecting the manual closing of the disconnecting switch.

[0040] During the first half of the electric closing and the first half of the electric opening of the disconnecting switch operating mechanism, the operating shaft 2 is rotated by the actuating column 51 acting on the first working recess 614 and the second working recess 615 of the transmission groove 61, respectively. After the operating shaft 2 drives the energy storage spring of the disconnecting switch operating mechanism past the dead point position (during the second half of the electric closing and the second half of the electric opening of the disconnecting switch operating mechanism), the energy storage spring quickly drives the operating shaft to rotate.

[0041] When manually closing the circuit, the operating shaft 2 is rotated in the opposite direction by the external handle. The shaft-connected turntable 6 will not be linked with the switching gear plate 5 during the reverse rotation of the operating shaft 2, thereby realizing the engagement and disengagement between the motor and the transmission gear assembly when manually closing the circuit.

[0042] When manually opening the circuit breaker, the operating shaft 2 is rotated forward by the external handle. The shaft-connected turntable 6 will not be linked with the switching gear plate 5 during the forward rotation of the operating shaft 2, thereby realizing the engagement and disengagement between the motor and the transmission gear assembly when manually opening the circuit breaker.

[0043] In this embodiment, as shown in the appendix Figure 9 As shown, the switching gear disk 5 is movably connected to the operating frame 1 via the switching shaft 52. The outer periphery of the switching gear disk 5 is provided with switching external teeth 53, which mesh with the transmission gear assembly 4. The actuating column 51 is located on the outer edge of the side of the switching gear disk 5.

[0044] In this embodiment, as shown in the appendix Figure 9As shown, two shaft-connected turntables 6 are arranged in parallel on the operating shaft 2, and a clearance cavity 62 is provided between the two shaft-connected turntables 6. The switching gear 5 is clamped in the clearance cavity 62. When the electric operation is performed, the actuating pins 51 on both sides of the switching gear 5 are linked with the two shaft-connected turntables 6 respectively, which improves the reliability and stability of the operating mechanism.

[0045] In this embodiment, as shown in the appendix Figure 9 As shown, a positioning pin 63 connects the two shaft-connected turntables 6, and the positioning pin 63 is used to fix the two shaft-connected turntables 6.

[0046] In this embodiment, actuating posts 51 are provided on both sides of the switching gear disk 5.

[0047] In this embodiment, as shown in the appendix Figure 10 As shown, the operating shaft 2 includes an operating part 21 and a transmission part 22. The operating frame 1 has a corner limiting opening 11, and the transmission part 22 is inserted into the corner limiting opening 11. One end of the operating part 21 has a manual rotation hole 23. By providing the corner limiting opening 11 on the operating frame 1, the number of parts can be reduced compared to existing operating shaft limiting mechanisms. The operating frame 1 includes a mechanism side plate and a gearbox.

[0048] In this embodiment, as shown in the appendix Figure 8 As shown, the transmission unit 22 is connected to a spring drive component 7. The operating frame 1 is equipped with a closing spring energy storage component 8, a opening spring energy storage component 9, and a closing / opening micro switch 10. The closing spring energy storage component 8 and the opening spring energy storage component 9 are respectively linked to the spring drive component 7. The closing / opening micro switch 10 is located on one side of the spring drive component 7 and detects the current closing / opening status of the isolating switch. The closing / opening micro switch 10 controls the working state of the motor 3 by detecting the closing / opening status of the isolating switch.

[0049] In this embodiment, the closing spring energy storage component 8 and the opening spring energy storage component 9 are driven by the spring drive component 7. During the rotation of the spring drive component 7, it will pass through the dead point of the energy storage spring.

[0050] In this embodiment, as shown in the appendix Figure 7 As shown, the included angle between the first action concave point 614 and the second action concave point 615 is greater than 90° and less than 180°. Such first action concave point 614 and second action concave point 615 make the action of the toggle post 51 of the switching gear disk 5 more stable.

[0051] In this embodiment, as shown in the appendix Figure 9As shown, three actuating pins 51 are provided, and the actuating pins 51 are evenly distributed on the surface of the switching gear disk 5. The rotation angle between adjacent actuating pins 51 is 120°. Setting three actuating pins 51 is the optimal solution because the response speed during electric opening and closing is fast, and it does not affect the manual opening and closing operation of the disconnecting switch.

[0052] This utility model's anti-jamming disconnect switch operating mechanism, through its specific transmission groove 61 structure (first guide surface, transition surface, second guide surface, first action recess, and second action recess) and action sequence separation, allows the operating shaft 2 to rotate via the power of the motor 3 through the actuating column 51 acting on the action recess before the energy storage spring passes the dead point, completing the first half of the switching action. Once the energy storage spring passes the dead point, its stored energy is released instantly, driving the operating shaft to quickly and automatically complete the second half of the switch state switching. During the second half of the rapid action of the energy storage spring, the actuating column is in a position that cannot interfere with the free rotation of the shaft-connected turntable 6, fundamentally avoiding the rigid interference and jamming phenomenon caused by the transmission structure in traditional designs when the spring moves at high speed past the dead point, ensuring absolutely smooth operation, effectively shortening the disconnect switch switching time, and significantly extending the mechanical life of key components of the operating mechanism, thereby fundamentally improving the overall stability and reliability of the operation.

[0053] Example 2

[0054] Combined with appendix Figure 1 To be continued Figure 10 The present invention is a disconnect switch, including the anti-jamming disconnect switch operating mechanism described in Embodiment 1.

[0055] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0056] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An anti-jamming disconnect switch operating mechanism, comprising an operating frame, an operating shaft rotatably connected to the operating frame, a motor mounted on the operating frame, and a transmission gear assembly linked to the motor, characterized in that, The operating frame is connected to a switching gear disk that is linked to the transmission gear assembly. The operating shaft is connected to a shaft-connected turntable, which has a transmission groove. The inner wall of the transmission groove includes a first guide surface, a transition surface, and a second guide surface in sequence. A first action recess is provided between the first guide surface and the transition surface, and a second action recess is provided between the second guide surface and the transition surface. At least one actuating post is provided on the side of the switching gear disk facing the transmission groove. The actuating post and the transmission groove are on the same action plane. As the actuating post rotates with the switching gear disk, it enters and leaves the transmission groove. When the actuating post acts on the first action recess and the second action recess respectively, it drives the shaft-connected turntable to rotate, thereby realizing the electric closing and electric opening of the operating shaft.

2. The anti-jamming disconnector operating mechanism according to claim 1, characterized in that, The switching gear disk is movably connected to the operating frame via a switching shaft. The outer periphery of the switching gear disk is provided with switching external teeth, which mesh with the transmission gear assembly. The actuating column is located on the outer edge of the side of the switching gear disk.

3. The anti-jamming disconnector operating mechanism according to claim 1, characterized in that, Two shaft-connected turntables are arranged in parallel on the operating shaft, and a clearance cavity is provided between the two shaft-connected turntables. The switching gear plate is clamped in the clearance cavity.

4. The anti-jamming disconnector operating mechanism according to claim 3, characterized in that, A locating pin connects the two shaft-connected turntables.

5. The anti-jamming disconnector operating mechanism according to claim 3, characterized in that, Both sides of the switching gear are equipped with actuating posts.

6. The anti-jamming disconnector operating mechanism according to claim 1, characterized in that, The operating shaft includes an operating part and a transmission part. The operating frame has a corner limiting port, and the transmission part is inserted and connected in the corner limiting port. One end of the operating part has a manual rotation hole.

7. The anti-jamming disconnector operating mechanism according to claim 6, characterized in that, The transmission unit is connected to a spring drive component. The operating frame is equipped with a closing spring energy storage component, a opening spring energy storage component, and a micro switch for opening and closing. The closing spring energy storage component and the opening spring energy storage component are respectively linked to the spring drive component. The micro switch for opening and closing is located on one side of the spring drive component and detects the current opening and closing status of the isolating switch.

8. A jamming-resistant isolating switch operating mechanism according to any one of claims 1 to 7, characterized in that, The angle between the first functional concave point and the second functional concave point is greater than 90° and less than 180°.

9. A jamming-resistant isolating switch operating mechanism according to any one of claims 1 to 7, characterized in that, The toggle pins are provided in three parts, and the toggle pins are evenly distributed on the surface of the switching gear plate.

10. A disconnecting switch, characterized in that, Includes the anti-jamming disconnect switch operating mechanism as described in any one of claims 1 to 9.

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