Operating mechanism of isolating switch

Abstract

The invention relates to the technical field of disconnecting switches, in particular to an operating mechanism of a disconnecting switch, which comprises a base, a mechanism seat fixedly mounted on the base, a rotating wheel rotatably assembled on the mechanism seat, an energy storage spring sleeving the rotating wheel, a lock catch slidably penetrating through the rotating wheel and a lock catch spring providing elastic reset force for the lock catch. The rotating wheel is provided with a round hole allowing the lock catch to slide telescopically, a rotating disc is rotationally arranged at the top of the rotating wheel, and oblique arm beams are integrally formed at the two ends of the rotating disc. In the operating mechanism of the disconnecting switch, through a matching structure of the lock catch, the lock catch spring and the clamping plate, a plastic deformation unlocking mode is abandoned, and a release point is only related to the stroke of the lock catch, so that the rotating angle of the mechanism is accurately controlled, the elastic limitation of materials is eliminated, and the storage capacity adjusting space is improved. The arc-shaped surface at the end of the lock catch is in point contact fit with the inner wall of the mechanism base, sliding friction force is greatly reduced, force loss after stored energy is released is reduced, and the closing and opening speed of the mechanism is remarkably increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of isolating switches, in particular to an operating mechanism of an isolating switch. BACKGROUND

[0002] In the field of isolating switches of power systems, the energy storage release efficiency, operation stability and cost control of the operating mechanism are the core technical demands. In the prior art, there are three defects in the energy storage release mode of the operating mechanism of the isolating switch: first, the energy storage capacity is limited and the release angle precision is insufficient by using plastic elastic deformation energy storage; second, the material cost is high and the process is complex, and the installation is difficult by relying on the cooperation of metal coil springs and multiple parts assembly; third, the spring locking release is achieved by the cooperation of the energy conversion and the upper cover, which is affected by the size precision of multiple parts, and is mostly designed as surface contact, so that the friction is large after the energy storage release, the force loss is serious, and the operation speed of the mechanism is affected. At the same time, the unreasonable contact layout of the traditional mechanism leads to material waste, and the arc extinguishing structure design is not optimized, which further restricts the overall performance of the isolating switch. Therefore, there is an urgent need for an isolating switch operating mechanism with simple structure, precise energy storage release, small friction, controllable cost and excellent arc extinguishing effect to solve the many problems existing in the prior art. SUMMARY

[0003] The purpose of the present application is to provide an operating mechanism of an isolating switch to solve the problem of the spring locking release by the cooperation of the energy conversion and the upper cover, which is affected by the size precision of multiple parts, and is mostly designed as surface contact, so that the friction is large after the energy storage release, the force loss is serious, and the operation speed of the mechanism is affected.

[0004] To achieve the above-mentioned purpose, the present application provides an operating mechanism of an isolating switch, comprising a base, a mechanism seat fixedly installed on the base, a rotating wheel rotatably assembled on the mechanism seat, an energy storage spring sleeved on the rotating wheel, a lock catch slidingly penetrating through the rotating wheel, and a lock catch spring providing elastic return force to the lock catch; the rotating wheel is provided with a circular hole for the lock catch to slide in and out, and the top of the rotating wheel is provided with a rotating disc, and the two ends of the rotating disc are integrally formed with inclined arm beams; the outer wall of the lock catch is provided with a return boss, the end of the lock catch is provided with an arc surface, one end of the lock catch is elastically abutted with the rotating wheel through the lock catch spring, and the other end of the lock catch is selectively limited and matched with the side wall of the mechanism seat; when the rotating disc rotates, the inclined arm beams push the return boss through sliding to drive the lock catch to retreat into the circular hole to release the limit locking of the rotating wheel and the mechanism seat, and the energy storage spring releases the stored energy and drives the rotating wheel to rotate.

[0005] As a preferred scheme of the present application, a clamping plate is further included, the clamping plate is clamped in the rotating wheel near the circular hole, the lock catch is matched with the clamping plate through the lock catch spring to realize the telescopic limiting of the lock catch in the circular hole.

[0006] As a preferred embodiment of the present invention, the arc-shaped surface of the locking end forms a point contact with the inner wall of the mechanism seat, and the arc-shaped surface slides and fits against the inner wall of the mechanism seat when the rotating wheel rotates.

[0007] As a preferred embodiment of the present invention, it further includes stationary contacts A and B symmetrically arranged on the base, wherein stationary contacts A and B are arranged in a parallel and symmetrical manner.

[0008] As a preferred embodiment of the present invention, the base is stacked in multiple layers from bottom to top, with the uppermost layer being the base mounting mechanism seat.

[0009] As a preferred embodiment of the present invention, a first arc-extinguishing chamber and a second arc-extinguishing chamber are provided on both sides of the interior of the base. The first arc-extinguishing chamber and the second arc-extinguishing chamber are arranged vertically within the multi-layered base. The first arc-extinguishing chamber is provided with a plurality of first arc-extinguishing plates, and the second arc-extinguishing chamber is provided with a plurality of second arc-extinguishing plates.

[0010] As a preferred embodiment of the present invention, a first exhaust port is provided on the outer side of the first arc-extinguishing chamber, and a second exhaust port and a third exhaust port are provided on the outer side of the second arc-extinguishing chamber.

[0011] As a preferred embodiment of the present invention, a cover plate is installed on the top of the mechanism base, and a drive shaft is installed at the top center of the turntable. The upper end of the drive shaft passes through the cover plate and is equipped with a drive pin. The drive shaft is connected to an external drive device through the drive pin.

[0012] As a preferred embodiment of the present invention, the inner wall of the mechanism seat is uniformly provided with a plurality of limiting slots, and the end of the latch is adapted to the limiting slot.

[0013] As a preferred embodiment of the present invention, one end of the energy storage spring is connected to the rotating wheel, and the other end is connected to the turntable. When the turntable rotates, one end of the energy storage spring rotates with the turntable, while the other end is limited by the rotating wheel.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the operating mechanism of this disconnect switch, the locking mechanism, locking spring, and locking plate work together to eliminate the plastic deformation unlocking method. The release point is only related to the locking stroke, which enables precise control of the rotation angle of the mechanism. At the same time, it eliminates the limitations of material elasticity and improves the storage capacity adjustment space.

[0015] 2. In the operating mechanism of this disconnector, the arc-shaped surface at the end of the latch forms a point contact with the inner wall of the mechanism seat, which greatly reduces sliding friction, reduces force loss after energy storage release, and significantly improves the closing and opening speed of the mechanism.

[0016] 3. The operating mechanism of this disconnecting switch has a simple and compact structure, clear component assembly logic, reduces dependence on the dimensional accuracy of multiple components, simplifies the production process and reduces installation difficulty, and effectively controls material and manufacturing costs.

[0017] 4. In the operating mechanism of this disconnecting switch, the stationary contacts adopt a parallel and symmetrical layout to achieve efficient use of materials and avoid waste; fifth, the arc-extinguishing chamber is arranged vertically and adopts an arc-extinguishing plate design, which, together with the precisely positioned exhaust port, optimizes the arc-extinguishing effect and further improves the operational stability and reliability of the disconnecting switch. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded view of the base in this invention; Figure 3 This is a schematic diagram of the overall structure of the mechanism base in this invention; Figure 4 This is an exploded view of the mechanism base in this invention; Figure 5 This is one of the exploded structural diagrams of the mechanism seat in this invention; Figure 6 This is the second partially exploded structural diagram of the mechanism base in this invention; Figure 7 This is a schematic diagram of the latch structure in this invention; Figure 8 This is one of the schematic diagrams showing the working state of the mechanism seat in this invention; Figure 9 This is the second schematic diagram of the working state of the mechanism seat in this invention; The meanings of the labels in the diagram are as follows: 1. Base; 11. Stationary contact A; 12. Stationary contact B; 13. First arc-extinguishing chamber; 131. First arc-extinguishing plate; 132. First exhaust port; 14. Second arc-extinguishing chamber; 141. Second arc-extinguishing plate; 142. Second exhaust port; 143. Third exhaust port; 2. Mechanism seat; 21. Cover plate; 22. Drive shaft; 221. Drive pin; 23. Limiting slot; 3. Rotary wheel; 31. Round hole; 32. Turntable; 33. Inclined arm beam; 4. Energy storage spring; 5. Lock; 51. Return boss; 52. Arc-shaped surface; 6. Locking spring; 7. Clamping plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention provides an operating mechanism for a disconnecting switch, such as... Figures 1-9 As shown, the device includes a base 1, a mechanism seat 2 fixedly mounted on the base 1, a rotating wheel 3 rotatably mounted on the mechanism seat 2, an energy storage spring 4 sleeved on the rotating wheel 3, a latch 5 slidably passing through the rotating wheel 3, and a latch spring 6 providing elastic restoring force to the latch 5. The rotating wheel 3 has a circular hole 31 for the latch 5 to slide and extend, and a turntable 32 is rotatably mounted on the top of the rotating wheel 3. The two ends of the turntable 32 are integrally formed with inclined arm beams 33. The outer wall of the latch 5 has a return boss 51 protruding, and the end of the latch 5 has an arc-shaped surface 52. One end of the latch 5 elastically abuts against the rotating wheel 3 through the latch spring 6, and the other end of the latch 5 selectively limits the engagement with the side wall of the mechanism seat 2. When the turntable 32 rotates, the inclined arm beam 33 slides against the return boss 51, driving the latch 5 to retract into the circular hole 31, thereby releasing the limiting lock between the rotating wheel 3 and the mechanism seat 2. The energy storage spring 4 releases stored energy and drives the rotating wheel 3 to rotate.

[0021] The combined structure of base 1, mechanism seat 2, rotating wheel 3, energy storage spring 4, lock 5 and lock spring 6, in conjunction with the circular hole 31, turntable 32, inclined arm beam 33 of rotating wheel 3 and the return boss 51 and arc surface 52 of lock 5, the rotation of turntable 32 drives inclined arm beam 33 to push against return boss 51, so that lock 5 can accurately retract into circular hole 31, quickly release the limit lock of rotating wheel 3 and mechanism seat 2, and allow energy storage spring 4 to efficiently release stored energy and drive rotating wheel 3 to rotate. This solves the problems of limited storage capacity and inaccurate release angle in the existing technology, and improves the accuracy and response speed of the mechanism.

[0022] In this embodiment, a locking plate 7 is also included. The locking plate 7 is locked inside the rotating wheel 3 near the round hole 31. The latch 5 cooperates with the locking plate 7 through the latch spring 6 to realize the extension and retraction limit of the latch 5 in the round hole 31.

[0023] The locking plate 7 is locked inside the rotating wheel 3 near the round hole 31, and cooperates with the locking spring 6 and the locking buckle 5 to provide a stable limit for the extension and sliding of the locking buckle 5 in the round hole 31, preventing the locking buckle 5 from sliding off course, ensuring reliable limiting cooperation between the locking buckle 5 and the side wall of the mechanism seat 2, further improving the stability of the mechanism locking and unlocking, and ensuring a smooth energy storage release process.

[0024] Specifically, the arc-shaped surface 52 at the end of the latch 5 forms a point contact fit with the inner wall of the mechanism seat 2, and the arc-shaped surface 52 slides and fits against the inner wall of the mechanism seat 2 when the rotating wheel 3 rotates.

[0025] The arc-shaped surface 52 at the end of the latch 5 forms a point contact with the inner wall of the mechanism seat 2. Compared with the traditional surface contact, this greatly reduces the sliding friction when the wheel 3 rotates, reduces the force loss after energy storage is released, and ensures that the arc-shaped surface 52 slides smoothly against the inner wall of the mechanism seat 2, effectively improving the speed of the mechanism's closing and opening actions and enhancing the mechanism's operating efficiency.

[0026] Furthermore, it also includes stationary contacts A11 and B12 symmetrically arranged on the base 1, with stationary contacts A11 and B12 arranged in a parallel and symmetrical layout. The base 1 is stacked in multiple layers from bottom to top, with the uppermost base 1 mounting the mechanism seat 2.

[0027] The base 1 has a first arc-extinguishing chamber 13 and a second arc-extinguishing chamber 14 arranged on both sides inside. The first arc-extinguishing chamber 13 and the second arc-extinguishing chamber 14 are arranged vertically within the multi-layered base 1. The first arc-extinguishing chamber 13 is provided with a plurality of first arc-extinguishing plates 131, and the second arc-extinguishing chamber 14 is provided with a plurality of second arc-extinguishing plates 141.

[0028] The first arc-extinguishing chamber 13 is provided with a first exhaust port 132 on its outer side, and the second arc-extinguishing chamber 14 is provided with a second exhaust port 142 and a third exhaust port 143 on its outer side.

[0029] Arc-extinguishing chambers 13 are arranged on both sides of the interior of the base 1, and are arranged vertically within the multi-layered base 1. Several arc-extinguishing plates 131 are provided inside the arc-extinguishing chambers 13. The arc-extinguishing chambers are provided with exhaust ports, and exhaust ports 132 are provided on the outer side of the arc-extinguishing chambers 13 corresponding to the arc-extinguishing plates 131.

[0030] The stationary contact A11 and stationary contact B12 adopt a parallel and symmetrical layout to achieve efficient material utilization, reduce unnecessary material waste, and lower production costs. The base 1 adopts a multi-layer stacked design from bottom to top, with the mounting mechanism 2 at the top, which optimizes the overall structural layout and improves space utilization. The first arc-extinguishing chamber 13 and the second arc-extinguishing chamber 14 are arranged vertically within the multi-layer base 1. The first exhaust port 132, the second exhaust port 142, and the third exhaust port 143 on the outer side enhance the arc-extinguishing effect, quickly cut off the arc, and ensure the safety and stability of the disconnecting switch operation.

[0031] Furthermore, a cover plate 21 is installed on the top of the mechanism base 2, and a drive shaft 22 is installed at the top center of the turntable 32. The upper end of the drive shaft 22 passes through the cover plate 21 and is fitted with a drive pin 221. The drive shaft 22 is connected to the external drive equipment through the drive pin 221. Several limiting slots 23 are evenly arranged on the inner wall of the mechanism base 2, and the end of the latch 5 is adapted to the limiting slot 23.

[0032] The cover plate 21 on top of the mechanism base 2 protects the internal components, preventing impurities from entering and affecting operation. The drive shaft 22 on top of the turntable 32, in conjunction with the drive pin 221, achieves stable transmission connection with external drive equipment, ensuring precise and efficient power transmission. The limiting slot 23 on the inner wall of the mechanism base 2 matches the end of the latch 5, further improving the reliability of the latch 5's limiting and locking, preventing accidental unlocking during operation, and enhancing the overall operational stability of the mechanism. Furthermore, one end of the energy storage spring 4 is connected to the wheel 3, and the other end is connected to the turntable 32. When the turntable 32 rotates, one end of the energy storage spring 4 rotates with the turntable 32, while the other end is limited by the wheel 3.

[0033] One end of the energy storage spring 4 is connected to the rotating wheel 3, and the other end is connected to the turntable 32. When the turntable 32 rotates, one end of the lever arm rotates with it, while the other end is limited by the rotating wheel 3, so that the energy storage spring 4 can store energy stably, ensuring that the energy storage process is controllable. When released, the energy is concentrated, providing sufficient power for the rotation of the rotating wheel 3, ensuring that the mechanism moves powerfully and stably, and improving the efficiency and reliability of energy storage and release.

[0034] When the operating mechanism of the disconnect switch of the present invention is in use, the latch 5 first extends out of the round hole 31 of the rotating wheel 3 under the elastic restoring force of the latch spring 6, and the end is precisely locked into the limiting groove 23 on the inner wall of the mechanism seat 2. The rotating wheel 3 is stably limited and locked, and the energy storage spring 4 is in the pre-energy storage state. The cover plate 21 closes the top of the mechanism seat 2 to prevent impurities from entering the interior and affecting the operation of the components.

[0035] The external drive device drives the drive shaft 22 to rotate through the drive pin 221, which in turn drives the turntable 32 to rotate synchronously. The inclined arm beams 33 at both ends of the turntable 32 rotate with it and gradually slide against the return boss 51 of the latch 5, overcoming the elastic force of the latch spring 6, and driving the latch 5 to gradually retract into the round hole 31. At this time, the latch 5 disengages from the limit slot 23, and the limit lock between the turntable 3 and the mechanism seat 2 is released.

[0036] The energy storage spring 4 releases the stored energy instantly, driving the rotating wheel 3 to rotate rapidly inside the mechanism seat 2; the arc-shaped surface 52 at the end of the latch 5 slides and fits against the inner wall of the mechanism seat 2 in point contact, greatly reducing the rotational friction and ensuring the smooth rotation of the rotating wheel 3, thereby driving the relevant moving contact components to move, realizing the closing or separation of the stationary contact A11 and the moving contact.

[0037] When an electric arc is generated during the contact operation, the first arc-extinguishing chamber 13 and the second arc-extinguishing chamber 14 arranged vertically inside the base 1 start to work. The first arc-extinguishing plate 131 and the second arc-extinguishing plate 141 inside quickly divide and extinguish the electric arc. The electric arc is finally discharged through the exhaust port 132 to avoid damage to the components by the electric arc and ensure operational safety.

[0038] After the switch completes the opening and closing action, the external drive stops outputting power, and the latch 5 extends out of the round hole 31 again under the elastic force of the latch spring 6 and is locked into the corresponding limit slot 23, and the rotating wheel 3 is locked again; at the same time, the energy storage spring 4 re-stores energy through the lever arm cooperation between the rotating wheel 3 and the turntable 32, and the entire mechanism returns to the initial standby state, waiting for the next operation command.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An operating mechanism for a disconnecting switch, characterized in that: The device includes a base (1), a mechanism seat (2) fixedly installed on the base (1), a rotating wheel (3) rotatably mounted on the mechanism seat (2), an energy storage spring (4) sleeved on the rotating wheel (3), a latch (5) slidably passing through the rotating wheel (3), and a latch spring (6) providing elastic restoring force to the latch (5); the rotating wheel (3) has a circular hole (31) for the latch (5) to extend and slide, and a turntable (32) is rotatably provided on the top of the rotating wheel (3), with inclined beams (33) integrally formed at both ends of the turntable (32); the outer wall of the latch (5) has a return The locking boss (51) has an arc-shaped surface (52) at its end. One end of the locking boss (5) is elastically abutted against the rotating wheel (3) through the locking spring (6), and the other end of the locking boss (5) is selectively limited to the side wall of the mechanism seat (2). When the turntable (32) rotates, the inclined arm beam (33) pushes against the return boss (51) by sliding, driving the locking boss (5) to retract into the round hole (31) to release the limiting lock between the rotating wheel (3) and the mechanism seat (2). The energy storage spring (4) releases the stored energy and drives the rotating wheel (3) to rotate.

2. The operating mechanism of the disconnecting switch according to claim 1, characterized in that: It also includes a locking plate (7), which is locked inside the rotating wheel (3) near the round hole (31). The latch (5) cooperates with the locking plate (7) through the latch spring (6) to realize the extension and retraction limit of the latch (5) in the round hole (31).

3. The operating mechanism of the disconnecting switch according to claim 1, characterized in that: The arc-shaped surface (52) at the end of the latch (5) forms a point contact with the inner wall of the mechanism seat (2), and the arc-shaped surface (52) slides against the inner wall of the mechanism seat (2) when the wheel (3) rotates.

4. The operating mechanism of the disconnecting switch according to claim 1, characterized in that: It also includes stationary contacts A (11) and B (12) symmetrically arranged on the base (1), wherein stationary contacts A (11) and B (12) are arranged in parallel symmetrical layout.

5. The operating mechanism of the disconnector switch according to claim 1, characterized in that: The base (1) is stacked in multiple layers from bottom to top, and the uppermost base (1) is the mounting mechanism seat (2).

6. The operating mechanism of the disconnector switch according to claim 5, characterized in that: The base (1) has a first arc-extinguishing chamber (13) and a second arc-extinguishing chamber (14) on its inner sides. The first arc-extinguishing chamber (13) and the second arc-extinguishing chamber (14) are arranged vertically within the multi-layered base (1). The first arc-extinguishing chamber (13) is provided with a number of first arc-extinguishing plates (131), and the second arc-extinguishing chamber (14) is provided with a number of second arc-extinguishing plates (141).

7. The operating mechanism of the disconnector switch according to claim 6, characterized in that: The first arc-extinguishing chamber (13) is provided with a first exhaust port (132) on the outside, and the second arc-extinguishing chamber (14) is provided with a second exhaust port (142) and a third exhaust port (143) on the outside.

8. The operating mechanism of the disconnector switch according to claim 1, characterized in that: The top of the mechanism base (2) is equipped with a cover plate (21), and a drive shaft (22) is installed at the top center of the turntable (32). The upper end of the drive shaft (22) passes through the cover plate (21) and is equipped with a drive pin (221). The drive shaft (22) is connected to the external drive device through the drive pin (221).

9. The operating mechanism of the disconnecting switch according to claim 1, characterized in that: The inner wall of the mechanism seat (2) is evenly provided with several limiting slots (23), and the end of the latch (5) is adapted to the limiting slots (23).

10. The operating mechanism of the disconnecting switch according to claim 1, characterized in that: One end of the energy storage spring (4) is connected to the rotating wheel (3), and the other end is connected to the turntable (32). When the turntable (32) rotates, one end of the energy storage spring (4) rotates with the turntable (32), and the other end is limited by the rotating wheel (3).

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