Operating mechanism and isolating switch

Abstract

The utility model relates to an operating mechanism and an isolating switch, the operating mechanism comprises a rotating shaft, and also comprises a jump fastener, a releasing member, an energy storage elastic member and a remote driver, the jump fastener is sleeved on the rotating shaft, and the jump fastener and the rotating shaft form linkage cooperation of circumferential rotation; the energy storage elastic piece is used for generating elastic deformation and storing energy in the process that the rotating shaft rotates to the closing position to be linked with the tripping piece, and the tripping piece is movably arranged on the outer side of the tripping piece and used for forming springback locking on the tripping piece in the process that the rotating shaft rotates to the closing position to be linked with the tripping piece. And the remote driver is used for driving the tripping piece to move according to a remote control signal, so that the tripping piece relieves the rebound locking of the tripping piece to the jump buckle piece, triggers the jump buckle of the jump buckle piece and is linked with the rotating shaft for opening. According to the utility model, the size and the number of parts of the remote shunt driving mechanism are reduced, so that the remote shunt driving mechanism can respond quickly, and meanwhile, the requirements of reliability and economical efficiency of products are met.

Description

Technical Field

[0001] This utility model relates to switching electrical appliances, specifically to the shunt tripping operating mechanism in a disconnecting switch. Background Technology

[0002] Rotary disconnect switches are commonly used electrical components in power systems. Generally, a rotary disconnect switch includes an operating handle, an operating mechanism, and a contact system. The operating mechanism is driven by manually rotating the operating handle, thereby completing the connection and disconnection of the moving and stationary contacts in the contact system.

[0003] With the development of intelligent new energy electrical systems, the need for remote disconnection of disconnecting switches has gradually emerged. Currently, most rotary disconnecting switches use an external remote shunt drive mechanism to achieve remote disconnection. However, existing remote shunt drive mechanisms are either structurally complex and bulky, or cannot achieve rapid response. Utility Model Content

[0004] Therefore, in view of the above problems, this utility model proposes an optimized operating mechanism and an isolating switch having the operating mechanism.

[0005] This utility model is achieved using the following technical solution:

[0006] This utility model proposes an operating mechanism, including a rotating shaft configured to switch the circuit between opening and closing via its rotation. It also includes a tripping element, a tripping element, an energy storage elastic element, and a remote driver. The tripping element is sleeved on the rotating shaft, and the tripping element and the rotating shaft form a circumferential rotational linkage. The energy storage elastic element acts on the tripping element and is configured to generate elastic deformation and store energy during the rotation of the rotating shaft to its closing position. The tripping element is movably disposed outside the tripping element and is used to form a spring-loaded lock on the tripping element during the rotation of the rotating shaft to its closing position. The remote driver is used to drive the tripping element to move according to a remote control signal, so that the tripping element releases its spring-loaded lock on the tripping element, thereby triggering the tripping of the tripping element and causing the rotating shaft to open.

[0007] In one embodiment, preferably, the release element is rotatably disposed on the radial side of the jump fastener, the rotation axis of the release element is parallel to the rotation axis of the rotation shaft, and the release element and the jump fastener move in the same plane.

[0008] In one embodiment, preferably, the remote driver, the tripping element, and the jumper are arranged in the same plane of motion.

[0009] In one embodiment, preferably, the jump fastener is rotatably sleeved on a rotating shaft, the rotating shaft including a rotating disk, the rotating disk having a first protrusion protruding axially thereon, and the jump fastener having a second protrusion protruding axially thereon. The first and second protrusions are aligned in the circumferential direction. When one of the rotating disk and the jump fastener rotates, the first and second protrusions abut against each other to push the other of the rotating disk and the jump fastener to rotate.

[0010] In one embodiment, preferably, the body of the jump fastener is a sheet-like structure.

[0011] In one embodiment, preferably, the tripping member is rotatably disposed on the outer side of the tripping member in the radial direction, the rotating shaft of the tripping member is a semi-circular radial cross-section, the axial cross-section of the semi-circular section forms an inclined guide portion that guides the tripping member to rotate past the tripping member, and the tripping member is also equipped with a reset member, which is used to reset the tripping member in a direction relatively closer to the tripping member.

[0012] In one embodiment, preferably, the radial outer edge of the release fastener has a partially outwardly extending extension for abutting against the pivot of the release fastener.

[0013] In one embodiment, preferably, the tripping component further includes a plate-shaped swing arm, a reset component and a remote driver acting on both sides of the plate-shaped swing arm. The plate-shaped swing arm can engage with the housing of the operating mechanism to limit the reset rotation of the tripping component. When the tripping component is limited by the housing, the force of the tripping component on the tripping component passes through the rotation center of the tripping component, causing the tripping component to be in a dead position.

[0014] In one embodiment, preferably, the tripping element is rotatably configured, with the remote driver and the tripping element respectively arranged at the two swing ends of the tripping element. When the remote driver drives the tripping element to move, the tripping element forms a force-saving lever structure.

[0015] Based on the above-described operating mechanism, this utility model also proposes an isolating switch, including an operating mechanism for switching the circuit open or closed, wherein the operating mechanism is the aforementioned operating mechanism.

[0016] The present invention has the following advantages: The present invention sets the jump fastener and the rotating shaft coaxially, and sets the release element on the outside of the jump fastener. It uses the function of the energy storage elastic element to realize elastic energy storage and jump fastening, which effectively improves the integration of the product, reduces the volume and number of parts of the remote shunt drive mechanism, and enables the remote shunt drive mechanism to respond quickly, while meeting the requirements of product reliability and economy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the disconnecting switch in the embodiment;

[0018] Figure 2 This is an exploded view of the internal structure of the disconnecting switch in the embodiment;

[0019] Figure 3 This is an exploded view of the remote shunt drive mechanism of the operating mechanism in the embodiment;

[0020] Figure 4 This is an assembly schematic diagram of the remote shunt drive mechanism of the operating mechanism in the embodiment;

[0021] Figure 5(a) is a schematic diagram of the first state in which the release element and the jumper element cooperate in the embodiment;

[0022] Figure 5(b) is a schematic diagram of the second state in which the release element and the jumper element cooperate in the embodiment;

[0023] Figure 5(c) is a schematic diagram of the third state in which the release element and the tripping element cooperate in the embodiment;

[0024] Figure 6 This is a schematic diagram of a modified example of the tripping component in the embodiment. Detailed Implementation

[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0027] See Figure 1 and Figure 2 As shown in the preferred embodiment of this utility model, a disconnecting switch is provided, including a housing 100 and an operating mechanism. The operating mechanism includes a rotating shaft 1, configured to switch the circuit between open and closed states by rotating it. A handle 2 is externally connected to the rotating shaft 1; turning the handle 2 drives the rotating shaft 1 to rotate, thereby manually switching the disconnecting switch between open and closed states, which is the manual mode of the operating mechanism. The rotating shaft 1 and handle 2 are both existing technologies. Switching the disconnecting switch by rotating the rotating shaft 1 is something that can be achieved by those skilled in the art using conventional techniques. Therefore, this example will not elaborate on the specific implementation of switching the disconnecting switch by rotating the rotating shaft 1.

[0028] The operating mechanism in this embodiment is also equipped with a remote shunt drive mechanism, enabling the disconnecting switch to be operated remotely. For example... Figure 2 and Figure 3 The remote shunt drive mechanism includes a tripping element 3, a tripping element 4, an energy storage elastic element 5, and a remote driver 6. The tripping element 3 and the rotating shaft 1 form a circumferential rotational linkage. During the rotation of the rotating shaft 1 to the closed position, the tripping element 3 rotates in conjunction with the rotating shaft 1, causing the energy storage elastic element 5 to store energy. The tripping element 4 can hold the tripping element 3 in the energy storage state. When it is necessary to remotely disconnect the disconnecting switch, the remote driver 6 drives the tripping element 4, causing the tripping element 4 to release its holding effect on the tripping element 3. Thus, the tripping element 3 trips under the elastic force of the energy storage elastic element 5, and finally drives the rotating shaft 1 to rotate to the open position.

[0029] In this embodiment, the jump fastener 3 is rotatably sleeved on the rotating shaft 1. The jump fastener 3 can rotate freely on the rotating shaft 1, and the jump fastener 3 and the rotating shaft 1 can form an abutment fit in the circumferential direction, such as... Figure 2 and Figure 4 The rotating shaft 1 includes a rotating disk 11 with a first protrusion 12 protruding axially therefrom, and a jump fastener 3 with a second protrusion 31 protruding axially therefrom. The first protrusion 12 and the second protrusion 31 are aligned circumferentially. When one of the rotating disk 11 and the jump fastener 3 rotates, the first protrusion 12 and the second protrusion 31 abut against each other, thereby pushing the other of the rotating disk 11 and the jump fastener 3 to rotate. Besides this, there are other alternative solutions to achieve a circumferential rotational linkage between the jump fastener 3 and the rotating shaft 1. For example, if conditions permit, the jump fastener 3 can be directly fixed to the rotating shaft 1, or the hub of the jump fastener 3 can be connected to the rotating shaft 1. However, the solution in this embodiment allows the rotational stroke of the jump fastener 3 to not be completely synchronized with the rotational stroke of the rotating shaft 1, thereby increasing flexibility and avoiding interference between manual and remote modes. Figure 4 When the rotating shaft 1 is in the closed state and the tripping member 4 holds the tripping member 3 in the energy storage state, if the handle 2 is manually rotated (counterclockwise) to switch to the open state, the first protrusion 12 will not interfere with the second protrusion 31. Another advantage of this embodiment is that the gap between the second protrusion 31 and the first protrusion 12 before they come into contact can be used for acceleration. For example, during the process of the tripping member 3 tripping and ultimately driving the rotating shaft 1 to rotate, the second protrusion 31 and the first protrusion 12 can be designed to initially have a certain distance between them. After the tripping member 3 rotates a certain angle, the second protrusion 31 receives a certain acceleration and then pushes against the first protrusion 12.

[0030] In this embodiment, the jump fastener 3 is sleeved on the rotating shaft 1 and is coaxial with the rotating shaft 1. This makes the rotation linkage between the jump fastener 3 and the rotating shaft 1 more precise and stable. More preferably, the main body of the jump fastener 3 is a sheet-like structure to save space and reduce the overall volume of the device.

[0031] The energy storage elastic element 5 acts on the trip fastener 3, and is configured to generate elastic deformation and store energy according to the rotation of the trip fastener 3. For example, in this embodiment, the energy storage elastic element 5 is a torsion spring, one torsion arm of which acts on the trip fastener 3, and the other torsion arm is fixed (e.g., fixed to the housing 100). When the rotating shaft 1 rotates to the closed position and drives the trip fastener 3 to rotate, the energy storage elastic element 5 is torsion and generates elastic potential energy. At this time, the trip fastener 3 is held by the release element 4, and the elastic force of the energy storage elastic element 5 continues to act on the trip fastener 3 until the trip fastener 3 trips. The form of the energy storage elastic element 5 is not fixed. According to its principle, it can also be in the form of a tension spring, compression spring, or spring sheet, as long as the installation structure is adapted. Any elastic element that can store energy by the rotation of the trip fastener 3 driven by the rotation of the rotating shaft 1 to the closed position is feasible.

[0032] The tripping element 4 is movably disposed radially outside the tripping element 3, for example, the tripping element 4 is movably connected to the housing 100. Through its own travel, the tripping element 4 can move closer to or further away from the tripping element 3. When the tripping element 4 is in a position closer to the tripping element 3, it forms a motion limit / motion lock on the tripping element 3. The remote actuator 6 can then drive the tripping element 4 relatively away from the tripping element 3, thereby releasing the aforementioned motion limit / motion lock. In this embodiment, the tripping element 4 is implemented using a tripping half-shaft; specifically, the tripping element 4 is rotatably connected to the housing 100, and, as... Figures 5(a)-5(c) As shown, the rotating shaft 40 of the tripping element 4 is a semi-shaft with a radial cross-section approximately semi-circular. The axial section 40a of this semi-shaft forms an inclined guide portion. The radial outer edge of the tripping element 3 is provided with a partially outwardly extending extension portion 32. Figures 5(a), 5(b), and 5(c) respectively show the first, second, and third states of the tripping element 4 and the tripping element 3 in cooperation. When the rotating shaft 1 switches from the open position to the closed position, referring to Figures 5(c), 5(b), and 5(a) in sequence, due to the rotation of the tripping element 3, the extension portion 32 abuts against the axial section 40a, forcing the rotating shaft 40 to rotate. Under the guidance of the axial section 40a, the extension portion 32 eventually passes over the rotating shaft 40. Figure 3 and Figure 4The trip unit 4 is also equipped with a reset member 7. After the extension 32 passes over the rotating shaft 40, under the action of the reset member 7, the trip unit 4 resets in the direction relatively closer to the trip unit 3, thus locking the springback action of the trip unit 3 and keeping the trip unit 3 in the energy storage state, forming a latch. In Figure 5(a), the trip unit 4 in this state can adopt a limit structure to limit its maximum rotation angle to prevent it from being pushed by the trip unit 3, or the force of the trip unit 3 on the trip unit 4 can be set to pass through the rotation center of the trip unit 4, that is, to keep the trip unit 4 in the dead position. When remote tripping is required, the remote driver 6 is controlled by sending a signal to push the trip unit 4 to rotate in the opposite direction. At this time, referring to Figures 5(a), 5(b), and 5(c) in sequence, the trip unit 4 rotates in the direction relatively away from the trip unit 3. The trip unit 4 can no longer lock the trip unit 3, releasing the motion lock on the trip unit 3. The trip unit 3 quickly trips under the elastic force of the energy storage elastic member 5, and drives the rotating shaft 1 to trip. Afterwards, manually turn handle 2 to return rotating shaft 1 to the closed position, which will reset the entire remote shunt drive mechanism, complete energy storage, and prepare for the next shunt action.

[0033] In this embodiment, the reset element 7 is a torsion spring, with one torsion arm acting on the housing 100 and the other torsion arm acting on the tripping element 4. Of course, in other embodiments, the reset element 7 can also be a tension spring, compression spring, spring sheet or other elastic reset element, as long as the installation structure is adapted.

[0034] The remote drive 6 can be any type of drive, such as an electromagnetic drive, which has a push rod that pushes the trip element 4 to rotate.

[0035] The tripping component 4 also includes a plate-shaped swing arm 41. The reset component 7 and the remote driver 6 act on both sides of the plate-shaped swing arm 41, making the structure more compact. The plate structure of the plate-shaped swing arm 41 provides a larger force-bearing surface, making the movement more reliable. The two side plates of the plate-shaped swing arm 41 can be further optimized for cooperation with the reset component 7 and the remote driver 6. For example, in this embodiment, the side plate of the plate-shaped swing arm 41 that cooperates with the reset component 7 is provided with a receiving groove for receiving and limiting one of the torsion arms of the reset component 7. In this embodiment, a limiting surface (not shown in the figure) is also provided in the housing 100 to limit the rotation of the tripping component 4. When the reset force of the reset component 7 drives the tripping component 4 to reset and rotate, the plate-shaped swing arm 41 abuts against the limiting surface of the housing 100, thereby limiting the rotation of the tripping component 4. At this time, the tripping component 4 in the locked state in Figure 5(a) cannot continue to rotate clockwise, so the tripping stroke will not increase due to the continued rotation of the tripping component 4, thus preventing tripping failure. Furthermore, in this locked state, the force exerted by the jump fastener 3 on the release fastener 4 passes through the rotation center of the release fastener 4, meaning the release fastener 4 is at its dead point. The locking state of the release fastener 4 is the position state in which it forms a jump fastener lock on the jump fastener 3.

[0036] Based on the principle of the release element 4, in other embodiments, it can also be a sliding type instead of a rotating type, for example... Figure 6 A modified example of the tripping element 4 is shown. In this modified example, the tripping element 4a is a slidably mounted blocking block. The end of the tripping element 4a near the jumper 3 also has an inclined surface to guide the jumper 3 to rotate past the inclined guide portion of the tripping element 4a. Adaptively, the reset element 7 in this modified example can be replaced with a compression spring acting on one end of the tripping element 4a, and the remote actuator 6 can be replaced with a swing arm to actuate the tripping element 4a. By using the rotatable tripping element 4 in this embodiment, on the one hand, the tripping element 4 can achieve all functions with a small swing stroke, thus occupying less space; on the other hand, the lever principle can be used to minimize the driving force required by the remote actuator 6.

[0037] In this embodiment, the jump fastener 3 and the rotating shaft 1 are coaxially arranged, and the release fastener 4 is arranged on the outside of the jump fastener 3. The elastic energy storage and jump fastening are achieved by means of the energy storage elastic element 5, which effectively improves the integration of the product, reduces the volume and number of parts of the remote shunt drive mechanism, and enables the remote shunt drive mechanism to respond quickly, while meeting the requirements of product reliability and economy.

[0038] In this embodiment, the jump fastener 3 and the rotating shaft 1 are coaxially arranged, and the rotation axis of the release element 4 is parallel to the rotation axis of the rotating shaft 1. In this way, the release element 4 and the jump fastener 3 can move in the same plane. The release element 4 only needs to rotate in one direction to abut against the jump fastener 3 to lock it. This makes the cooperation between the release element 4 and the jump fastener 3 more reliable and stable, the movement of the release element 4 more controllable and the positioning more accurate. At the same time, the structure of the release element 4 can be set more simply, requiring only one end face to lock the jump fastener 3. Furthermore, because the release element 4 and the jump fastener 3 rotate in the same plane, in the state shown in Figure 5(a), the force given to the release element 4 by the remote actuator 6 can more effectively overcome the force exerted on the release element 4 by the jump fastener 3. Thus, this embodiment can use the lever principle to reduce the driving force required by the remote actuator 6, achieving the effect of saving effort and reducing power consumption. When the remote actuator 6 drives the release element 4 to move, the release element 4 forms a force-saving lever structure.

[0039] In addition, in this embodiment, the remote driver 6 is also arranged on the same motion plane as the tripping component 4 and the tripping component 3. Specifically, as shown in the figure... Figure 4 The remote actuator 6 and the trip fastener 3 are respectively arranged at the two swing ends of the trip unit 4 and on the same side of the trip unit 4. This further compresses the device volume of the disconnect switch, so that the remote actuator 6 does not occupy additional height space of the disconnect switch.

[0040] Where conditions permit, the operating mechanism of this embodiment can be applied not only to disconnect switches but also to other switching devices, such as circuit breakers.

[0041] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. An operating mechanism comprising a rotating shaft configured to be able to switch an opening and closing of a circuit by rotation thereof, characterized by, The operating mechanism further comprises a trip member, a release member, an energy storage elastic member and a remote driver, wherein: the trip member is sleeved on the rotating shaft, and the trip member and the rotating shaft form a linkage in circumferential rotation, the energy storage elastic member acts on the trip member, and the energy storage elastic member is configured to be able to produce elastic deformation and store energy during the rotation of the rotating shaft to the closed position of the linkage trip member, the release member is movably arranged outside the trip member, and is used to form a rebound locking of the trip member during the rotation of the rotating shaft to the closed position of the linkage trip member, the remote driver is used to drive the release member to move according to a remote control signal, so as to release the rebound locking of the trip member by the release member, thereby triggering the trip of the trip member and opening the rotating shaft.

2. The operating mechanism according to claim 1, characterized in that The release member is rotatably arranged outside the trip member in the radial direction, and the rotation axis of the release member is parallel to the rotation axis of the rotating shaft, and the release member and the trip member move in the same plane.

3. Operating mechanism according to claim 1 or 2, characterized in that The remote driver, the release member and the trip member are arranged in the same movement plane.

4. The operating mechanism of claim 1, wherein The trip member is rotatably sleeved on the rotating shaft, and the rotating shaft comprises a rotating disc, the rotating disc is provided with a first protruding part protruding in the axial direction thereof, the trip member is provided with a second protruding part protruding in the axial direction thereof, the first protruding part and the second protruding part are circumferentially aligned, and when one of the rotating disc and the trip member rotates, the first protruding part and the second protruding part abut to drive the other one of the rotating disc and the trip member to rotate.

5. The operating mechanism of claim 1, wherein The main body of the trip member is a sheet structure.

6. The operating mechanism of claim 1, wherein The release member is rotatably arranged outside the trip member in the radial direction, and the rotation shaft of the release member is a half shaft with a semicircular radial cross section, and the axial cross section of the half shaft forms an inclined guide part for guiding the trip member to rotate over the release member, and the release member is further provided with a reset member for resetting the release member in the direction close to the trip member.

7. The operating mechanism of claim 6, wherein The radial outer edge of the trip member is provided with a locally outwardly extending extension part for abutting and cooperating with the rotation shaft of the release member.

8. The operating mechanism of claim 6, wherein The release member further comprises a plate-shaped swing arm, the reset member and the remote driver respectively act on both sides of the plate body of the plate-shaped swing arm, the plate-shaped swing arm can be limitedly matched with the housing of the operating mechanism to limit the reset rotation of the release member, and in the state that the release member is limited by the housing, the force of the trip member on the release member passes through the center of rotation of the release member, so that the release member is at a dead point position.

9. The operating mechanism of claim 1, wherein The release member is rotatably arranged, and the remote driver and the trip member are arranged at two swing end positions of the release member, and when the remote driver drives the release member to move, the release member forms a force-saving lever structure.

10. A disconnector comprising an operating mechanism for switching a circuit open or closed, characterized in that The operating mechanism is any one of the operating mechanisms in claims 1-9.

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