Operating mechanism and isolating switch

Abstract

The invention relates to an operating mechanism and an isolating switch, the operating mechanism comprises a rotating shaft, and further comprises a jump fastener, a tripping part, an energy storage elastic part and a remote driver, the jump fastener is sleeved on the rotating shaft, and the jump fastener and the rotating shaft form linkage fit 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 invention, 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 product reliability and economy are met.

Description

Technical Field

[0001] The present invention relates to a switching device, and more particularly to a shunt operating mechanism in a disconnector. Background Art

[0002] A rotary disconnector is a commonly used electrical component in the power system. Generally, a rotary disconnector includes an operating handle, an operating mechanism, and a contact system. The operating handle is manually rotated to drive the operating mechanism, thereby completing the connection and disconnection of the moving and static contacts in the contact system.

[0003] With the development of new energy electrical intelligence, there is a growing need for remote disconnection operation of disconnectors. Currently, most rotary disconnectors are externally equipped with a remote shunt drive mechanism to achieve remote disconnection. However, the existing remote shunt drive mechanisms are either complex in structure and large in occupied volume, or cannot achieve rapid response. Summary of the Invention

[0004] Therefore, in view of the above problems, the present invention proposes an operating mechanism with optimized structure and a disconnector having the operating mechanism.

[0005] The present invention is implemented by the following technical solutions:

[0006] The present invention proposes an operating mechanism, including a rotating shaft configured to be able to switch the opening and closing of a circuit by its rotation, and further including a tripping member, a releasing member, a storage elastic member, and a remote driver. Wherein, the tripping member is sleeved on the rotating shaft, and the tripping member and the rotating shaft form a circumferential rotation linkage cooperation. The storage elastic member acts on the tripping member and is configured to be able to generate elastic deformation and store energy during the process of the rotating shaft rotating to its closing position and linking the tripping member. The releasing member is movably arranged outside the tripping member and is used to form a rebound lock on the tripping member during the process of the rotating shaft rotating to its closing position and linking the tripping member. The remote driver is used to drive the releasing member to move according to a remote control signal, so that the releasing member releases its rebound lock on the tripping member, thereby triggering the tripping of the tripping member and linking the rotating shaft to trip.

[0007] In one embodiment, preferably, the releasing member is rotatably arranged outside the tripping member in the radial direction. The rotation axis of the releasing member is parallel to the rotation axis of the rotating shaft, and the releasing member and the tripping member move in the same plane.

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

[0009] In one embodiment, preferably, the jumping buckle is rotatably sleeved on a rotating shaft, the rotating shaft includes a rotating disk, the rotating disk is provided with a first convex portion protruding axially therefrom, and the jumping buckle is provided with a second convex portion protruding axially therefrom. The first convex portion and the second convex portion are aligned in the circumferential direction. When one of the rotating disk and the jumping buckle rotates, the other is pushed to rotate by the abutment of the first convex portion and the second convex portion.

[0010] In one embodiment, preferably, the main body of the jumping buckle is a sheet-like structure.

[0011] In one embodiment, preferably, the releasing buckle is rotatably arranged on the outer side in the radial direction of the jumping buckle. The rotating shaft of the releasing buckle is a semi-shaft with a semi-circular radial cross-section. The axial cross-section of the semi-shaft forms an inclined guiding portion for guiding the jumping buckle to rotate over the releasing buckle. The releasing buckle is also equipped with a reset member for resetting the releasing buckle in a direction relatively closer to the jumping buckle.

[0012] In one embodiment, preferably, a locally outward-extending extension portion is provided on the outer edge in the radial direction of the jumping buckle for abutting and cooperating with the rotating shaft of the releasing buckle.

[0013] In one embodiment, preferably, the releasing buckle further includes a plate-shaped swing arm. The reset member and the remote driver act on both sides of the plate body of the plate-shaped swing arm respectively. The plate-shaped swing arm can be in limit cooperation with the housing of the operating mechanism to limit the reset rotation of the releasing buckle. In the state where the releasing buckle is limited by the housing, the force of the jumping buckle on the releasing buckle passes through the rotation center of the releasing buckle, so that the releasing buckle is in a dead point position.

[0014] In one embodiment, preferably, the releasing buckle is rotatably arranged, and the remote driver and the jumping buckle are respectively arranged at two swinging end positions of the releasing buckle. When the remote driver drives the releasing buckle to move, the releasing buckle forms a labor-saving lever structure.

[0015] Based on the above operating mechanism, the present invention further provides a disconnecting switch, including an operating mechanism for switching the circuit to open or close, and the operating mechanism is the above operating mechanism.

[0016] The present invention has the following beneficial effects: The present invention coaxially arranges the jumping buckle and the rotating shaft, and arranges the releasing buckle on the outer side of the jumping buckle, and realizes elastic energy storage and jumping by means of the action of the energy storage elastic member, effectively improving the product integration, reducing the volume and the number of parts of the remote shunt trip drive mechanism, enabling the remote shunt trip drive mechanism to respond quickly, and meeting the requirements of product reliability and economy at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0019] Figure 3 is an exploded schematic view of the remote shunt trip driving mechanism of the operating mechanism in the embodiment;

[0020] Figure 4 is an assembled schematic view of the remote shunt trip driving mechanism of the operating mechanism in the embodiment;

[0021] Fig. 5(a) is a schematic view of the first state in which the release fastener and the trip fastener cooperate with each other in the embodiment;

[0022] Fig. 5(b) is a schematic view of the second state in which the release fastener and the trip fastener cooperate with each other in the embodiment;

[0023] Fig. 5(c) is a schematic view of the third state in which the release fastener and the trip fastener cooperate with each other in the embodiment;

[0024] Figure 6 is a schematic view of a variant of the release fastener in the embodiment. Detailed implementation manners

[0025] To further illustrate the embodiments, the present invention provides accompanying drawings. These accompanying drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be combined with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0026] Now, the present invention will be further described in conjunction with the accompanying drawings and the detailed implementation manners.

[0027] Refer to Figure 1 and Figure 2 As shown, as a preferred embodiment of the present invention, a disconnect switch is provided, which includes a housing 100 and an operating mechanism. Among them, the operating mechanism includes a rotating shaft 1, and the rotating shaft 1 is configured to be able to switch the opening and closing of the circuit by its rotation. The rotating shaft 1 is externally connected to a handle 2, and the handle 2 is twisted to drive the rotating shaft 1 to rotate, thereby manually switching the opening and closing of the disconnect switch, which is the manual mode of the operating mechanism. The settings of the rotating shaft 1 and the handle 2 are both prior arts, and it is achievable for those skilled in the art to rotate the rotating shaft 1 to switch the opening and closing of the disconnect switch through conventional technical means. Therefore, the specific implementation manner of rotating the rotating shaft 1 to switch the opening and closing of the disconnect switch will not be described in detail in this example.

[0028] The operating mechanism of this embodiment is also equipped with a remote shunt trip driving mechanism to be able to perform a disconnection operation on the disconnect switch in the remote mode. As shown in Figure 2 andFigure 3 , the remote shunt drive mechanism includes a tripping buckle 3, a releasing buckle 4, a storage elastic member 5, and a remote driver 6. The tripping buckle 3 and the rotating shaft 1 form a circumferentially rotating linkage. During the process of the rotating shaft 1 rotating to the closing position, the tripping buckle 3 is linked to the rotating shaft 1 and rotates to store energy in the storage elastic member 5. The releasing buckle 4 can hold the tripping buckle 3 in the energy storage state. When it is necessary to remotely disconnect the disconnector, the remote driver 6 drives the releasing buckle 4 to release its holding effect on the tripping buckle 3. As a result, the tripping buckle 3 makes a tripping movement under the elastic force of the storage elastic member 5 and finally drives the rotating shaft 1 to rotate to the opening position.

[0029] In this embodiment, the tripping buckle 3 is rotatably sleeved on the rotating shaft 1. The tripping buckle 3 can freely rotate on the rotating shaft 1, and the tripping buckle 3 and the rotating shaft 1 can form an abutting fit in the circumferential direction, such as Figure 2 and Figure 4 , the rotating shaft 1 includes a rotating disk 11. The rotating disk 11 is provided with a first convex portion 12 protruding axially therefrom. The tripping buckle 3 is provided with a second convex portion 31 protruding axially therefrom. The first convex portion 12 and the second convex portion 31 are aligned in the circumferential direction. When one of the rotating disk 11 and the tripping buckle 3 rotates, the other is pushed to rotate by the abutment of the first convex portion 12 and the second convex portion 31. In addition, to make the tripping buckle 3 and the rotating shaft 1 form a circumferentially rotating linkage, there are other alternative solutions. For example, if conditions permit, the tripping buckle 3 can also be directly fixedly connected to the rotating shaft 1, or the tripping buckle 3 is hub-connected to the rotating shaft 1. However, adopting the solution of this embodiment can make the rotation stroke of the tripping buckle 3 not completely synchronized with the rotation stroke of the rotating shaft 1, thereby increasing flexibility and avoiding mutual interference between the manual mode and the remote mode. For example, in Figure 4 as shown, when the rotating shaft 1 is in the closing state and the releasing buckle 4 holds the tripping buckle 3 in the energy storage state, if the handle 2 is manually rotated (counterclockwise) to switch to the opening state, the first convex portion 12 will not interfere with the second convex portion 31. Another advantage of adopting the solution of this embodiment is that the distance gap before the second convex portion 31 and the first convex portion 12 abut against each other can be used for acceleration. For example, during the process of the tripping buckle 3 making a tripping movement and finally driving the rotating shaft 1 to rotate, it can be designed that there is a certain distance interval between the second convex portion 31 and the first convex portion 12 first. After the tripping buckle 3 rotates a certain angle, the second convex portion 31 gets a certain acceleration and then pushes against the first convex portion 12.

[0030] In this embodiment, the tripping buckle 3 is sleeved on the rotating shaft 1 and is coaxially arranged with the rotating shaft 1, which can make the rotational linkage between the tripping buckle 3 and the rotating shaft 1 more precise and stable. More preferably, the main body of the tripping buckle 3 is a sheet-like structure to save space and reduce the overall volume of the device.

[0031] The energy storage elastic member 5 acts on the tripping buckle 3, and the energy storage elastic member 5 is configured to be able to generate elastic deformation and store energy according to the rotation of the tripping buckle 3. For example, in this embodiment, the energy storage elastic member 5 is a torsion spring, one torsion arm of which acts on the tripping buckle 3, and the other torsion arm is fixedly arranged (such as fixed to the housing 100). When the rotating shaft 1 rotates to the closing position and drives the tripping buckle 3 to rotate, the energy storage elastic member 5 is twisted to generate elastic potential energy. At this time, the tripping buckle 3 is held by the releasing buckle 4, and the elastic force of the energy storage elastic member 5 continuously acts on the tripping buckle 3 until the tripping buckle 3 performs a tripping action. The form of the energy storage elastic member 5 is not fixed. According to its principle, it can also adopt forms such as a tension spring, a compression spring, and a spring sheet, as long as the installation structure is adaptively improved. Any elastic member that can store energy due to the rotation action of the tripping buckle 3 driven by the rotating shaft 1 rotating to the closing position is feasible.

[0032] The releasing buckle 4 is movably arranged on the radial outer side of the tripping buckle 3. For example, the releasing buckle 4 is movably connected to the housing 100. Through the movement stroke of the releasing buckle 4 itself, it can at least move closer to or farther away from the tripping buckle 3. When the releasing buckle 4 is in a position closer to the tripping buckle 3, the releasing buckle 4 forms a movement limit / locking for the movement of the tripping buckle 3. The remote driver 6 can drive the releasing buckle 4 to move relatively away from the tripping buckle 3, thereby releasing the above-mentioned movement limit / locking. In this embodiment, the releasing buckle 4 is realized by a releasing half shaft. Specifically, the releasing buckle 4 is rotatably connected to the housing 100, and, as Figure 5(a)-Figure 5(c) shown, the rotating shaft 40 of the releasing buckle 4 is a half shaft with a radial cross section approximately semicircular, and the axial cross section 40a of the half shaft forms an inclined guiding portion. A locally outward extending extension portion 32 is provided on the radial outer edge of the tripping buckle 3. Figures 5(a), 5(b), and 5(c) respectively show the first state, the second state, and the third state of the cooperation between the releasing buckle 4 and the tripping buckle 3. When the rotating shaft 1 switches from the opening position to the closing position, referring to Figures 5(c), 5(b), and 5(a) in sequence, due to the rotation of the tripping buckle 3, the extension portion 32 abuts against the axial cross section 40a and forces the rotating shaft 40 to rotate. Under the guidance of the axial cross section 40a, the extension portion 32 finally crosses over the rotating shaft 40. As Figure 3 and Figure 4, the release member 4 is also provided with a reset member 7. After the extension portion 32 passes over the rotating shaft 40, under the action of the reset member 7, the release member 4 is reset in a direction relatively close to the toggle member 3 so as to be able to catch the rebound movement of the toggle member 3, and the toggle member 3 is held in the energy storage state to form a locking. In the state of Fig. 5(a), the release member 4 can adopt a limiting structure to limit its maximum rotation angle to prevent it from being pushed by the toggle member 3, or alternatively, it can be set that the force of the toggle member 3 on the release member 4 passes through the rotation center of the release member 4, that is, the release member 4 is in the dead point position. When remote opening is required, a signal is sent to control the remote driver 6 to push the release member 4 to rotate in the reverse direction. At this time, referring to Fig. 5(a), Fig. 5(b), and Fig. 5(c) in sequence, the release member 4 rotates in a direction relatively far from the toggle member 3, and the release member 4 can no longer catch the toggle member 3, releasing the motion lock on the toggle member 3. The toggle member 3 quickly jumps under the elastic force of the energy storage elastic member 5 and drives the rotating shaft 1 to open. After that, manually rotate the handle 2 to make the rotating shaft 1 return to the closing position, then the entire remote shunt drive mechanism can be re-locked and reset to complete energy storage, preparing for the next shunt operation.

[0033] The reset member 7 is a torsion spring in this embodiment. One torsion arm acts on the housing 100, and the other torsion arm acts on the release member 4. Of course, in other embodiments, the reset member 7 can also adopt other elastic reset members such as a tension spring, a compression spring, and a spring plate, as long as the installation structure is adaptively improved.

[0034] The remote driver 6 can adopt any type of driver, such as an electromagnetic driver, which has a push rod that pushes the release member 4 to rotate.

[0035] The release member 4 further includes a plate-shaped swing arm 41. The reset member 7 and the remote driver 6 act on both sides of the plate body of the plate-shaped swing arm 41 respectively, making the structure more compact. The plate body structure of the plate-shaped swing arm 41 has a larger force-bearing surface and more reliable movement. The two side plate surfaces of the plate-shaped swing arm 41 can be further optimized for cooperation with the reset member 7 and the remote driver 6. For example, in this embodiment, a receiving groove is provided on one side plate surface of the plate-shaped swing arm 41 that cooperates with the reset member 7 for receiving and limiting one torsion arm of the reset member 7. In this embodiment, a limiting surface (not marked in the figure) for rotationally limiting the release member 4 is also provided in the housing 100. When the reset force of the reset member 7 drives the release member 4 to reset and rotate, the plate-shaped swing arm 41 abuts against the limiting surface of the housing 100, thereby forming a rotational limit for the release member 4. At this time, in the locked state of Fig. 5(a), the release member 4 cannot continue to rotate clockwise, so the release trip will not increase due to the continuous rotation of the release member 4, resulting in release failure. Further, in this locked state, the force of the toggle member 3 on the release member 4 passes through the rotation center of the release member 4, that is, the release member 4 is in the dead point position. The locked state of the release member 4 is the position state in which it forms a jump lock on the toggle member 3.

[0036] According to the principle of the release member 4, in other embodiments, it can also be a sliding type instead of a rotating type, for example, Figure 6 A modified example of a release member 4 is shown. The release member 4a in this modified example is a slidably arranged blocking block. The end of the release member 4a close to the jumper 3 also has an inclined surface as an inclined guide portion to guide the jumper 3 to rotate over the release member 4a. Adaptively, the reset member 7 in this modified example can be replaced by a compression spring acting on one end of the release member 4a, and the remote driver 6 can be replaced by a swing arm to slide the release member 4a. The use of the rotatable release member 4 in this embodiment, on the one hand, the release member 4 can realize all functions with a relatively small swing stroke, so the space it occupies is relatively small, and on the other hand, the driving force required to be provided by the remote driver 6 can be minimized by using the lever principle.

[0037] In this embodiment, the tripping member 3 and the rotating shaft 1 are coaxially arranged, and the release member 4 is arranged on the outside of the tripping member 3, and elastic energy storage and tripping are realized with the help of the energy storage elastic member 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 jumper 3 and the rotating shaft 1 are coaxially arranged, and the rotation axis of the release member 4 is parallel to the rotation axis of the rotating shaft 1. In this way, the release member 4 and the jumper 3 can move in the same plane. The release member 4 only needs to rotate in one direction to resist the jumper 3 to clamp the jumper 3, which makes the cooperation between the release member 4 and the jumper 3 more reliable and stable, the movement of the release member 4 is more controllable and the positioning is more accurate. At the same time, the structure of the release member 4 can also be set more simply, and only one end face is needed to clamp the jumper 3. In addition, because the release member 4 and the jumper 3 rotate in the same plane, in the state of FIG. 5 (a), the force given to the release member 4 by the remote driver 6 can more effectively overcome the force of the jumper 3 acting on the release member 4, so that the present embodiment can reduce the driving force required to be provided by the remote driver 6 by means of the lever principle, so as to achieve the effect of saving effort and reducing power consumption. When the remote driver 6 drives the release member 4 to move, the release member 4 forms a labor-saving lever structure.

[0039] In addition, in this embodiment, the remote driver 6 is also arranged in the same motion plane as the tripping member 4 and the tripping member 3. Specifically, Figure 4 The remote driver 6 and the tripping member 3 are respectively arranged at the two swinging end positions of the tripping member 4 and are on the same side of the tripping member 4. This further compresses the device volume of the disconnector and prevents the remote driver 6 from occupying additional height space of the disconnector.

[0040] Under the condition that permits, the operating mechanism of this embodiment can be applied not only to disconnectors but also to other switching electrical appliances, such as circuit breakers.

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

Claims

1. An operating mechanism, comprising a rotating shaft, wherein the rotating shaft is configured to switch the circuit between opening and closing by rotating the rotating shaft, characterized in that: It also includes a tripping member, a tripping member, an energy storage elastic member and a remote driver, wherein: The jump fastener is sleeved on the rotating shaft, and the jump fastener and the rotating shaft form a circumferentially rotating linkage. The energy storage elastic member acts on the jumper, and the energy storage elastic member is configured to generate elastic deformation and store energy in the process of the rotating shaft rotating the jumper to its closing position. The release member is movably arranged on the outside of the jumper member, and is used to form a rebound lock on the jumper member when the rotating shaft rotates the jumper member to its closing position. The remote driver is used to drive the tripping member to move according to the remote control signal, so that the tripping member releases its rebound lock on the tripping member, thereby triggering the tripping of the tripping member and linking the rotating shaft to open the gate.

2. The operating mechanism according to claim 1, characterized in that: The release member is rotatably arranged on the radially outer side of the jumper member, the rotation axis of the release member is parallel to the rotation axis of the rotating shaft, and the release member and the jumper member move in the same plane.

3. The operating mechanism according to claim 1 or 2, characterized in that: The remote drive, the tripping member and the jumper are arranged in the same motion plane.

4. The operating mechanism according to claim 1, characterized in that: The jump catch member can be rotatably sleeved on a rotating shaft, and the rotating shaft includes a rotating disk, on which a first protrusion protruding toward its axial direction is provided, and on the jump catch member, a second protrusion protruding toward its axial direction is provided, and the first protrusion and the second protrusion are aligned in the circumferential direction. When one of the rotating disk and the jump catch member rotates, the first protrusion and the second protrusion are abutted against each other to push the other of the rotating disk and the jump catch member to rotate.

5. The operating mechanism according to claim 1, characterized in that: The main body of the jump fastener is a sheet-like structure.

6. The operating mechanism according to claim 1, characterized in that: The release member is rotatably arranged on the radially outer side of the jumper member, and the rotating shaft of the release member is a semi-axis with a semicircular radial cross-section. The axial section of the semi-axis forms an inclined guide portion for guiding the jumper member to rotate over the release member. The release member is also equipped with a reset member, which is used to reset the release member in a direction relatively close to the jumper member.

7. The operating mechanism according to claim 6, characterized in that: The radial outer edge of the tripping member is provided with an extension portion which partially extends outwards and is used for abutting and cooperating with the rotating shaft of the tripping member.

8. The operating mechanism according to claim 6, characterized in that: The release member also includes a plate-shaped swing arm, and the reset member and the remote driver act on both sides of the plate body of the plate-shaped swing arm respectively. The plate-shaped swing arm can be limited by the shell of the operating mechanism to limit the reset rotation of the release member. When the release member is limited by the shell, the force of the jumper on the release member passes through the rotation center of the release member, so that the release member is in a dead point position.

9. The operating mechanism according to claim 1, characterized in that: The release member is rotatably arranged, and the remote driver and the jumper are respectively arranged at two swing end positions of the release member. When the remote driver drives the release member to move, the release member forms a labor-saving lever structure.

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

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