A rotary disconnector and a boosting mechanism thereof

Abstract

The application discloses a rotary isolating switch and a boosting mechanism thereof, which comprises a first elastic body and a rotating body. The rotating body has a connecting part and a compression part. The movable contact of the rotary isolating switch, which is far away from the operating mechanism, rotates together with the rotating body through cooperation with the connecting part. The compression part rotates to a first position when the movable contact is in a disconnected state, and rotates to a second position when the movable contact is in a closed state. The first elastic body is arranged on the shell of the rotary isolating switch and is located at the first position and / or the second position. The compression part compresses the first deformation end of the first elastic body at the first position and / or the second position to store energy. When the rotating action of the rotating body is close to the end, corresponding to the last stage when the switch is about to be closed or about to be disconnected, the kinetic energy is recovered through the first elastic body, a pushing force is provided for the movable contact at the transmission end in the next rotating start, the influence of action lag and insufficient kinetic energy is reduced, and the connecting and disconnecting performance is improved.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology, and in particular to a rotary disconnect switch and its assist mechanism. Background Technology

[0002] Rotary disconnect switches are particularly suitable for installation in high-voltage switchgear, making the high-voltage switchgear structure compact, simple, and space-saving, while improving its safety and reliability.

[0003] In existing rotary disconnect switches, the operating mechanism is located at the top of the product. The rotational action and kinetic energy of the moving contact closing and opening in each layer of the main circuit are transmitted layer by layer from top to bottom. Due to the gap fit or material deformation of the connecting parts or connecting mechanisms that transmit the rotational action and kinetic energy, especially when there are many layers in the main circuit, the gap or deformation accumulates significantly.

[0004] Therefore, there is a common problem: the moving contact in the bottommost switch unit will have a significant lag and insufficient kinetic energy, affecting the switching performance. Summary of the Invention

[0005] In view of this, the present invention provides a rotary disconnect switch and its assist mechanism, which provides thrust for the rotation and start-up of the lowest moving contact, reduces the effects of action lag and insufficient kinetic energy, and improves the connection and disconnection performance.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An assist mechanism for a rotary disconnect switch, used to cooperate with the rotary disconnect switch, the rotary disconnect switch comprising: an operating mechanism and a stacked main circuit, the stacked main circuit comprising a plurality of stacked moving contacts, the operating mechanism driving the plurality of moving contacts to rotate layer by layer; comprising: a first elastic body and a rotating body;

[0008] The rotating body has a connecting part and a compression part;

[0009] In a rotary disconnector, the moving contact away from the operating mechanism rotates together with the rotating body through a connection part. When the moving contact is in the open state, the compression part rotates to the first position, and when the moving contact is in the closed state, the compression part rotates to the second position.

[0010] The first elastic body is disposed in the housing of the rotary disconnect switch and is located in the first position and / or the second position;

[0011] The compression section compresses the first deformed end of the first elastomer in the first position and / or the second position to store energy.

[0012] Optionally, the connecting part is an auxiliary rotating shaft, which engages with the central groove on the side of the moving contact away from the operating mechanism to rotate synchronously.

[0013] Optionally, there are two compression sections, located on opposite sides of the connecting shaft.

[0014] There are two first elastic bodies, corresponding one-to-one with the two compression parts.

[0015] Optionally, the two compression parts are symmetrical about the axis of rotation of the connecting part, and the two first elastic bodies are symmetrical about the axis of rotation of the connecting part.

[0016] Optionally, the first elastomer has two first deformation ends, located at a first position and a second position, respectively.

[0017] Optionally, the first elastic body has a fixing part, and the two first deformable ends are connected as an integral structure through the fixing part;

[0018] The power-assisted mechanism of the rotary disconnector also includes: a housing;

[0019] The housing is equipped with a limiting structure that cooperates with the fixing part.

[0020] Optionally, the limiting structure is a card slot.

[0021] Optionally, the first elastic body includes: two mutually perpendicular compression springs; the first ends of the two compression springs serve as the first deformation ends, and the second ends of the two compression springs are connected by a fixing part;

[0022] Alternatively, the first elastic body includes: two spring sheets; the two spring sheets are arranged along an arc concentric with the axis of rotation of the rotating body, the first ends of the two spring sheets serve as the first deformation ends, and the second ends of the two spring sheets are connected by a fixing part;

[0023] Alternatively, the first elastic body is a torsion spring, which has two opposing lever arms as the first deformation ends, and the coiled body of the torsion spring as the fixed part.

[0024] Optionally, it also includes: a second elastomer;

[0025] The first elastic body is located in the first position;

[0026] The second elastic body is disposed in the housing of the rotary disconnector and is located in the second position;

[0027] The compression section compresses the second deformation end of the second elastomer at the second position to store energy.

[0028] Optionally, both the first elastic body and the second elastic body are compression springs, and the first elastic body and the second elastic body are perpendicular to each other.

[0029] A rotary disconnect switch includes: an operating mechanism, a stacked main circuit, and an assist mechanism;

[0030] The stacked main circuit includes: multiple moving contacts of the stacked drive;

[0031] The assist mechanism is the same as the rotary disconnector described above.

[0032] As can be seen from the above technical solution, the assist mechanism of the rotary disconnect switch provided by the present invention allows the moving contact away from the operating mechanism in the rotary disconnect switch to rotate together with the rotating body through cooperation with the connecting part. When the rotation of the rotating body is about to end, corresponding to the final stage when the switch is about to close or open, kinetic energy is recovered through the first elastic body, which provides thrust for the moving contact at the end of the transmission to start the next rotation, reducing the impact of action lag and insufficient kinetic energy, and improving the connection and disconnection performance. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is an exploded structural diagram of a rotary disconnector provided in an embodiment of the present invention;

[0035] Figure 2 This is another exploded structural diagram of the rotary disconnector provided in an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the structure of the moving contact provided in an embodiment of the present invention;

[0037] Figure 4 A schematic diagram of the assembly structure of the spring-loaded assist mechanism provided in an embodiment of the present invention;

[0038] Figure 5 A schematic diagram of the principle structure of the spring-loaded assist mechanism provided in an embodiment of the present invention;

[0039] Figure 6 A schematic diagram of the disconnected state structure of the integrated spring-type assist mechanism provided in an embodiment of the present invention;

[0040] Figure 7 A schematic diagram of the closed state structure of the integrated compression spring type assist mechanism provided in an embodiment of the present invention;

[0041] Figure 8 This is a schematic diagram of the structure of the split-type compression spring assist mechanism provided in an embodiment of the present invention;

[0042] Figure 9 This is an exploded structural diagram of the torsion spring-type assist mechanism provided in an embodiment of the present invention.

[0043] Wherein, 1 is the operating mechanism, 12 is the mechanism turntable, and 121 is the turntable groove;

[0044] 2 is the stacked main circuit, 24 is the moving contact, 2413 is the moving contact shaft, and 2414 is the central groove;

[0045] 3 is the assist mechanism, 31 is the first elastic body, 311 is the first deformation end, 3111 is the deformation end in the open state, 3112 is the deformation end in the closed state, 312 is the compression deformation part, and 313 is the fixing part; 31' is the second elastic body, and 311' is the second deformation end; 32 is the rotating body, 321 is the connecting part, and 322 is the compression part; 33 is the housing, and 331 is the limiting structure. Detailed Implementation

[0046] The assist mechanism of this application is not connected to the handle, but to the bottom contact assembly. Therefore, it does not store energy directly with the rotation of the handle, but stores energy with the movement of the bottom contact and releases it during the next rotation. The main problem it solves is the problem of lag in the movement of the contact assembly far from the handle and insufficient kinetic energy.

[0047] 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.

[0048] The rotary disconnect switch according to the embodiments of the present invention includes: an operating mechanism 1 and a stacked main circuit 2, wherein the stacked main circuit 2 includes a plurality of stacked moving contacts 24, the structure of which can be referred to Figure 1 and Figure 2 As shown, the rotational motion and kinetic energy that drive the moving contacts 24 in each layer of the stacked main circuit 2 to close and open, via the operating mechanism 1 located at the top of the product, are transmitted layer by layer from top to bottom. Typically, the operating mechanism 1 has two stable positions, corresponding to the closed and open states of the switch, respectively.

[0049] The rotary disconnector assist mechanism 3 provided in this embodiment of the invention includes: a first elastic body 31 and a rotating body 32, the structure of which can be referred to Figure 2 and Figure 4 As shown;

[0050] The rotating body 32 has a connecting part 321 and a compression part 322;

[0051] In the rotary disconnect switch, the part furthest from the operating mechanism 1 (i.e., located at the end of the transmission) Figure 2The moving contact 24 (at the bottom) rotates together with the rotating body 32 through cooperation with the connecting part 321. When the moving contact 24 is in the open state, the compression part 322 rotates with it to the first position (see reference). Figure 6 When the moving contact 24 is in the closed state, the compression part 322 rotates to the second position (see reference). Figure 7 );

[0052] The first elastic body 31 is disposed on the housing 33 of the rotary disconnect switch and is located in the first position and / or the second position, that is, the position corresponding to the open state and / or the closed state;

[0053] The compression section 322 stores energy by compressing the first deformation end 311 of the first elastic body 31 at the first position and / or the second position. Its compression deformation 312 can be referred to Figure 5 As shown, the elastic energy storage at the current position facilitates the movement of the moving contact 24 to another position; that is, energy storage is performed in the open and / or closed state to facilitate switching to another state.

[0054] As can be seen from the above technical solution, the assist mechanism of the rotary disconnect switch provided in the embodiment of the present invention recovers kinetic energy through the first elastic body 31 when the rotation of the rotating body 32 is about to end, corresponding to the final stage when the switch is about to close or open. This provides thrust for the moving contact 24 at the end of the transmission to start the next rotation, reducing the impact of action lag and insufficient kinetic energy, and improving the connection and disconnection performance.

[0055] Optionally, the connecting part 321 is an auxiliary rotating shaft, which engages with the central groove 2414 on the side of the moving contact 24 away from the operating mechanism 1 for synchronous rotation. Its structure can be referenced from [reference needed]. Figure 2 As shown, the mechanism turntable 12 of the operating mechanism 1 is connected to the moving contact shaft 2413 of the moving contact 24 through its turntable groove 121. The moving contacts 24 in each layer are sequentially connected through moving contact grooves 2414 and moving contact shafts 2413, rotating together with the mechanism turntable 12. That is, the connecting part 321 of this solution uses a shaft that mates with the inherent groove of the moving contact 24, which can be directly adapted to existing structures.

[0056] Specifically, there are two compression sections 322, located on opposite sides of the pivot of the connecting section 321, and their structure can be referred to as follows. Figure 2 As shown, it is a lever-type;

[0057] There are two first elastic bodies 31, corresponding one-to-one with the two compression parts 322. Their structure can be referred to Figure 4 and Figure 5As shown, this allows for simultaneous compression deformation on both sides, increasing the magnitude and stability of the elastic force. Of course, a greater number of compression sections 322 and first elastic bodies 31 can be used, preferably evenly distributed circumferentially, depending on the actual space available.

[0058] Furthermore, the two compression sections 322 are symmetrical about the pivot center of the connecting section 321, and their structure can be referred to as follows. Figure 2 As shown; the two first elastic bodies 31 are symmetrical about the axis of rotation of the connecting part 321 (which is also the axis of rotation of the rotating body 32), and their structure can be referred to Figure 4 and Figure 5 As shown, the two first elastic bodies 31 are spaced 180° apart to ensure uniform and stable restoring force.

[0059] In this embodiment, the first elastic body 31 has two first deformation ends 311, located at a first position and a second position, respectively. That is, the first elastic body 31 can provide restoring force for the compression part 322 in the open state and also for the compression part 322 in the closed state, reducing the effects of lag and insufficient kinetic energy in both actions.

[0060] Furthermore, the first elastic body 31 has a fixing part 313, and the two first deformable ends 311 are connected into an integral structure through the fixing part 313, which facilitates assembly. Its structure can be referred to Figure 6 and Figure 7 As shown;

[0061] The power assist mechanism of the rotary disconnector also includes: housing 33;

[0062] The housing 33 is provided with a limiting structure 331 that cooperates with the fixing part 313 to more accurately control the deformation of the elastic body and the corresponding thrust.

[0063] Specifically, the limiting structure 331 is a slot, which facilitates assembly and has a simple structure.

[0064] Optionally, the first elastic body 31 includes two mutually perpendicular compression springs; the first ends of the two compression springs serve as first deformation ends 311, and the second ends of the two compression springs are connected by a fixing part 313, the structure of which can be referred to Figure 6 and Figure 7 As shown, the compression spring is preferably arranged tangentially along the compression section 322.

[0065] Alternatively, the first elastic body 31 includes two spring sheets; the two spring sheets are arranged along an arc concentric with the axis of rotation of the rotating body 32, the first ends of the two spring sheets serve as first deformation ends 311, and the second ends of the two spring sheets are connected by a fixing part 313. Its structure can be referred to Figure 5 As shown;

[0066] Alternatively, the first elastic body 31 can be a torsion spring, which has two opposing lever arms as first deformation ends 311, located on both sides of the circumferential axis of the rotating body 32, and the spring coil as the fixing part 313. Its structure can be referred to Figure 9 As shown.

[0067] Of course, in addition to the aforementioned integrated structure, it can also be divided into two elastic bodies. In this case, the assist mechanism of the rotary disconnect switch provided in this embodiment of the invention further includes: a second elastic body 31', the structure of which can be referred to Figure 8 As shown;

[0068] The first elastic body 31 is located in the first position;

[0069] The second elastic body 31' is disposed in the housing 33 of the rotary disconnect switch and is located in the second position;

[0070] The compression section 322 compresses the second deformation end 311' of the second elastic body 31' in the second position to store energy. That is, the first elastic body 31 and the second elastic body 31' are located in the first position and the second position, respectively, acting on the open and closed states of the rotating body 32; the boosting effect of the first elastic body 31 is conducive to connection, and the boosting effect of the second elastic body 31' is conducive to disconnection.

[0071] Furthermore, both the first elastic body 31 and the second elastic body 31' are compression springs, and the first elastic body 31 and the second elastic body 31' are perpendicular to each other. Their structure can be referred to as Figure 8 As shown, the compression spring is preferably arranged tangentially along the compression section 322.

[0072] This invention also provides a rotary disconnect switch, comprising: an operating mechanism 1, a stacked main circuit 2, and an assist mechanism 3, the structure of which can be referred to Figure 1 As shown;

[0073] The stacked main circuit 2 includes: multiple stacked drive moving contacts 24;

[0074] The assist mechanism 3 is the same as the rotary disconnector described above.

[0075] The following is a further description of this solution with reference to specific embodiments:

[0076] In view of the technical defects of existing rotary switches, the purpose of this patent is to design an assist mechanism located at the bottom of the switch, which can recover kinetic energy in the final stage of the switch opening (or closing) and provide a boost in the starting stage of closing (or opening).

[0077] To achieve the above objectives, the present invention adopts the following technical solution:

[0078] A rotary disconnect switch with an assist mechanism includes an operating mechanism 1, a stacked main circuit 2, and an assist mechanism 3, see [link to documentation]. Figure 1 .

[0079] Operating mechanism 1 includes a mechanism turntable 12, and the stacked main circuit 2 includes a moving contact 24, see Figure 2 .

[0080] The moving contact 24 includes a moving contact shaft 2413 and a moving contact groove 2414, see Figure 3 .

[0081] The assist mechanism 3 includes an elastic body 31 and a rotating body 32, see Figure 4 .

[0082] Typically, the operating mechanism 1 has two stable positions, corresponding to the closed and open states of the switch, respectively. The specific principles will not be elaborated here.

[0083] In the stacked main circuit 2, the moving contact 24 closest to the operating mechanism 1 has a rotating shaft 2413 that connects to a rotating disk groove 121 on the mechanism turntable 12, which is similar to the moving contact groove 2414. The moving contact 24 in the stacked main circuit 2 connects to the moving contacts 24 in the upper and lower layers through its own moving contact rotating shaft 2413 and moving contact groove 2414, and rotates together with the mechanism turntable 12. The rotating body 32 in the lowest assist mechanism 3 also connects to the lowest moving contact 24 through its connecting part 321, which has a rotating shaft structure similar to the moving contact rotating shaft 2413, and rotates together with it. (See...) Figure 2 .

[0084] When the rotary switch is in the closed or open state, the rotating body 32 and the deformation end 311 of the elastic body 31 in the lowermost assist mechanism 3 are provided with appropriate deformation. As the rotation of the rotating body 32 nears its end, corresponding to the final stage of the switch being about to close or open, kinetic energy is recovered to provide thrust for the lowermost moving contact 24 to start its next rotation, reducing the impact of lag and insufficient kinetic energy, and improving the switching performance. The elastic body 31 is not limited to a spring, compression spring, or torsion spring, etc., see [link to relevant documentation]. Figure 4 .

[0085] Depending on the actual situation of the switch, the assist mechanism 3 can be selected to store energy during the closing or opening process. Of course, it is also possible to store energy during both the closing and opening processes, but the premise is that it cannot affect the normal operation of the switch. If too much energy is stored, the switch may not be able to close or open properly.

[0086] If the switch is in the open state, the elastic body 31 has already undergone a certain compressive deformation 312. When the switch is switched to the closed state again and the rotating body 32 starts rotating, the propelling effect of the elastic body 31 facilitates the connection. See Figure 5 and Figure 6.

[0087] For example, when the switch is in the closed state, the elastic body 31 has already undergone a certain amount of compressive deformation. When it switches to the open state again, and the rotating body 32 starts to rotate, the pushing effect of the elastic body 31 facilitates the breaking process. See [link to relevant documentation]. Figure 7 .

[0088] The elastic body 31 is designed as a compression spring to more accurately control its deformation and corresponding thrust. The position of the elastic body 31 can be fixed by the limiting structure 331 on the housing 33, see [link to relevant documentation]. Figure 6 .

[0089] Elastomer 31 can be made as follows Figure 4-7 The integrated structure facilitates assembly, but it can also be separated into two elastic bodies, such as... Figure 8 .

[0090] For example Figure 8 The configuration of the first elastic body 31 facilitates connection, while the second elastic body 1' facilitates disconnection.

[0091] The assist mechanism in this application is not an operating mechanism, which is unique among similar products. It is located at the bottom of the product and its function and purpose are to recover the kinetic energy of the operating mechanism, provide assistance for the next opening or closing, and effectively reduce the impact of movement. Furthermore, the function of the spring or spring is only effective in the final stage of the opening or closing process.

[0092] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0093] The above description of the disclosed embodiments enables those skilled in the art to make or use the 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 invention. Therefore, the 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 assist mechanism for a rotary disconnect switch, used to cooperate with the rotary disconnect switch, the rotary disconnect switch comprising: An operating mechanism (1) and a stacked main circuit (2), wherein the stacked main circuit (2) includes a plurality of stacked moving contacts (24), and the operating mechanism (1) drives the plurality of moving contacts (24) to rotate layer by layer; characterized in that the assisting mechanism includes: a first elastic body (31) and a rotating body (32). The rotating body (32) has a connecting part (321) and a compression part (322); In the rotary disconnect switch, the moving contact (24) away from the operating mechanism (1) rotates together with the rotating body (32) through cooperation with the connecting part (321). When the moving contact (24) is in the open state, the compression part (322) rotates to the first position, and when the moving contact (24) is in the closed state, the compression part (322) rotates to the second position. The first elastic body (31) is disposed on the housing (33) of the rotary disconnect switch and is located in the first position and / or the second position; The compression section (322) stores energy by compressing the first deformation end (311) of the first elastic body (31) at the first position and / or the second position; there are two compression sections (322), which are located on the radial sides of the rotating shaft of the connecting section (321); there are two first elastic bodies (31), which correspond one-to-one with the two compression sections (322); the two compression sections (322) are symmetrical about the rotating shaft of the connecting section (321), and the two first elastic bodies (31) are symmetrical about the rotating shaft of the connecting section (321); The assist mechanism is connected to the bottom contact assembly, and the operating mechanism (1) is located at the top of the rotary disconnect switch; In the stacked main circuit (2), the moving contact (24) closest to the operating mechanism (1) has a rotating shaft (2413) that is connected to the rotating disk groove (121) on the mechanism turntable (12) of the operating mechanism (1). The moving contact (24) in the stacked main circuit (2) is connected to the moving contact (24) of the upper and lower layers through its own moving contact rotating shaft (2413) and central groove (2414), and rotates together with the mechanism turntable (12). The rotating body (32) in the bottommost auxiliary mechanism (3) is connected to the bottommost moving contact (24) through the connecting part (321) of its rotating shaft structure, and rotates together.

2. The assist mechanism for the rotary disconnector according to claim 1, characterized in that, The connecting part (321) is a power-assisted rotating shaft, which engages with the central groove (2414) on the side of the moving contact (24) away from the operating mechanism (1) to rotate synchronously.

3. The assist mechanism for the rotary disconnector according to claim 1 or 2, characterized in that, The first elastic body (31) has two first deformation ends (311), located at the first position and the second position respectively.

4. The assist mechanism for the rotary disconnector according to claim 3, characterized in that, The first elastic body (31) has a fixing part (313), and the two first deformable ends (311) are connected to each other as an integral structure through the fixing part (313); The power assist mechanism of the rotary disconnect switch also includes: housing (33); The housing (33) is provided with a limiting structure (331) that cooperates with the fixing part (313).

5. The assist mechanism of the rotary disconnect switch according to claim 4, characterized in that, The limiting structure (331) is a card slot.

6. The assist mechanism for the rotary disconnector according to claim 4, characterized in that, The first elastic body (31) includes: two mutually perpendicular compression springs; the first ends of the two compression springs serve as the first deformation ends (311), and the second ends of the two compression springs are connected by a fixing part (313); Alternatively, the first elastic body (31) includes: two spring sheets; the two spring sheets are arranged along an arc concentric with the axis of rotation of the rotating body (32), the first end of the two spring sheets serves as the first deformation end (311), and the second ends of the two spring sheets are connected by a fixing part (313); Alternatively, the first elastic body (31) is a torsion spring, which has two opposing force arms as the first deformation end (311) and the spring body of the torsion spring as the fixed part (313).

7. The assist mechanism for the rotary disconnector according to claim 1 or 2, characterized in that, Also includes: Second elastomer (31'); The first elastic body (31) is located in the first position; The second elastic body (31') is disposed in the housing (33) of the rotary disconnector and is located in the second position; The compression section (322) compresses the second deformation end (311') of the second elastomer (31') at the second position to store energy.

8. The assist mechanism of the rotary disconnector according to claim 7, characterized in that, Both the first elastic body (31) and the second elastic body (31') are compression springs, and the first elastic body (31) and the second elastic body (31') are perpendicular to each other.

9. A rotary disconnect switch, characterized in that, include: Operating mechanism (1), stacked main circuit (2) and assist mechanism (3); The stacked main circuit (2) includes: multiple stacked drive moving contacts (24); The assist mechanism (3) is the assist mechanism of the rotary disconnector as described in any one of claims 1-8.

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