Operating mechanism of isolating switch

Abstract

The invention belongs to the technical field of disconnecting switches, and relates to an operating mechanism of a disconnecting switch. Comprising a shell internally provided with a cavity, a first rotating transmission piece rotationally arranged in the cavity, a side operation wheel synchronously and rotationally connected with the first rotating transmission piece, a second rotating transmission piece coaxially and rotationally arranged with the first rotating transmission piece, an output driven piece in transmission connection with the second rotating transmission piece and a spring assembly. One end of the spring assembly is connected with the first rotating transmission part and eccentrically arranged relative to a rotating shaft of the first rotating transmission part, and the other end of the spring assembly is connected with the outer end of the second rotating transmission part. Compared with the prior art, flexible transmission is adopted between the side operation wheel and the output driven piece, so that the switching-on and switching-off speed of the mechanism does not depend on manual operation, and the switching-on and switching-off speed is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of isolating switches and relates to an operating mechanism of an isolating switch. Background Art

[0002] With the introduction of new DC high-voltage disconnectors into the market, high requirements are placed on the closing and opening speeds of disconnectors. The operating mechanism of the disconnector determines the closing and opening speeds of the disconnector. Currently, a hard transmission method is used between the output follower and the input active member of the operating mechanism of the disconnector on the market. For example, CN217588787U discloses an operating mechanism of a disconnector. Figure 4 In the operating mechanism shown in the figure, the a-axis and the b-axis are the rotating axes of the input active member, 200 and 300 are the input active members, when one of them is rotated by the operator, the output follower 300 on the other side will rotate together with the input active member, and the output follower 300 is connected to the contact module, and the rotation speed of the output follower is the closing and opening speed of the disconnector, so the closing and opening speed of the contact depends on the rotation speed of the input active member operated by the operator, which will greatly reduce the arc extinguishing effect when closing and opening. Summary of the invention

[0003] The purpose of the present invention is to provide an operating mechanism for an isolating switch, in which a flexible connection of a spring is adopted between an output follower and an input active member (side operating wheel), and the closing speed of the switch depends only on the parameters and structure of the spring, so that the closing and opening speed of the mechanism does not depend on human operation, thereby speeding up the closing and opening speed.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] An operating mechanism of an isolating switch comprises a housing with a cavity therein, a first rotating transmission member rotatably arranged in the cavity, a side operating wheel rotatably connected to the first rotating transmission member, a second rotating transmission member rotatably arranged coaxially with the first rotating transmission member, an output driven member transmission-connected to the second rotating transmission member, and a spring assembly;

[0006] One end of the spring assembly is connected to the first rotating transmission member and is eccentrically arranged relative to the rotating shaft of the first rotating transmission member, and the other end is connected to the outer end of the second rotating transmission member so that

[0007] When the side operating wheel drives the first rotating transmission member to rotate forward, the spring assembly is first compressed until the eccentric setting end crosses the line connecting the other end and the rotating shaft of the first rotating transmission member, and then the elastic potential energy of the spring assembly is released and drives the second rotating transmission member to drive the output follower to rotate in the opposite direction.

[0008] Further, a first V-shaped limiting platform and a second V-shaped limiting platform are provided inside the housing;

[0009] On both sides of the second rotating transmission member with respect to the rotating shaft, they can successively abut against both sides of the first V-shaped limiting platform during the rotation process, so as to be rotationally limited within the cavity;

[0010] A rotating limiting platform is provided on one side of the first rotating transmission member. The rotating limiting platform can successively abut against both sides of the second V-shaped limiting platform during the rotation process, so as to be rotationally limited within the cavity.

[0011] Further, the second rotating transmission member is symmetrically arranged with respect to the rotating shaft, and a pair of spring assemblies are provided on the second rotating transmission member. The spring assemblies are symmetrically arranged with respect to the center of the rotating shaft.

[0012] Further, a pair of first rotating transmission members and second rotating transmission members are respectively provided and symmetrically arranged on both sides of the spring assembly.

[0013] First rotating transmission member First rotating transmission member Further, the operating mechanism includes a pair of second rotating transmission members arranged in parallel, forming a clamping plate. The side operating wheel is arranged in parallel with one of the clamping plates. The rotating shaft passes through the through hole on the clamping plate and is rotatably connected to the side operating wheel. The side operating wheel and the through hole on the clamping plate do not interfere with each other.

[0014] Further, a polygonal rotating shaft through hole is provided on the first rotating transmission member, and the rotating shaft of the first rotating transmission member is correspondingly in the shape of a polygonal prism. Through the limiting effect of the polygon, the first rotating transmission member rotates synchronously with the rotating shaft.

[0015] Further, the rotating shaft is in the shape of a quadrangular prism or an octagonal prism.

[0016] Further, the output driven member is a coupling member. A first circumferential limiting shaft is provided on one side of the coupling member, and a second circumferential limiting hole adapted to the first circumferential limiting shaft is provided on the corresponding second rotating transmission member.

[0017] The coupling member is synchronously rotatably connected to the second rotating transmission member through the first circumferential limiting shaft and the second circumferential limiting hole.

[0018] As a preferred technical solution, the operating mechanism includes a pair of second rotating transmission members arranged in parallel, and each second rotating transmission member is synchronously rotatably connected to a coupling member.

[0019] As a preferred technical solution, one end of the rotating shaft of the first rotating transmission member is in the shape of a cylinder and is slidably embedded in the through hole on one side of the coupling member.

[0020] Further, the second circumferential limiting hole includes a circular hole and a plurality of fan-shaped grooves formed on the side of the circular hole along the circumferential direction.

[0021] Further, the spring assembly includes a spring bracket with a U-shaped frame at the top and a U-shaped hole at the bottom, a support plate slidably sleeved on the spring bracket, a main compression spring with two ends respectively abutting against the bottom of the U-shaped frame and the support plate, a first spring shaft abutting against the end of the U-shaped frame, and a second spring shaft abutting against the bottom side of the support plate and slidably embedded in the U-shaped hole;

[0022] The first spring shaft is connected to the first rotational transmission member, and the second spring shaft is connected to the second rotational transmission member.

[0023] As a preferred technical solution, a U-shaped groove adapted to the first spring shaft is further formed at the top of the U-shaped frame.

[0024] As a preferred technical solution, an arc-shaped groove adapted to the second spring shaft is provided on the bottom side of the support plate.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1) A flexible transmission is adopted between the input driving member and the output driven member of the present invention, so that the speed of the mechanism for closing and opening does not depend on manual operation, thereby accelerating the speed of closing and opening;

[0027] 2) The present invention can be configured with output driven members on both sides with the same rotation direction, and the mechanism placed in a centered manner can be selected according to the order;

[0028] 3) Most parts of the present invention use sheet metal processing technology, which is simple to manufacture and has low cost. Description of the Drawings

[0029] Figure 1 is a three-dimensional structural schematic diagram of an operating mechanism (the housing is not shown) of a disconnecting switch with a single-sided connected output driven member in the present invention;

[0030] Figure 2 is a bottom view of an operating mechanism of a disconnecting switch in the present invention;

[0031] Figure 3 is a structural schematic diagram of the spring assembly;

[0032] Figure 4 is an exploded view of the splint, the first rotational transmission member, and the rotating shaft;

[0033] Figure 5 is a cross-sectional view after the side operating wheel, the splint, the spring assembly, and the coupling member are assembled;

[0034] Figure 6 is a structural schematic diagram of the side operating wheel;

[0035] Figure 7 This is a cross-sectional view of an operating mechanism of a disconnecting switch in the present invention;

[0036] Figure 8 This is a schematic three-dimensional structure diagram of an operating mechanism (with a housing) of a disconnecting switch in the present invention;

[0037] Figure 9 This is a schematic structure diagram of the housing;

[0038] Explanation of the markings in the figure:

[0039] 2. Side operating wheel; 21. First circumferential limiting hole; 22. First circular shaft surface; 3. Clamping plate; 31. First mounting hole; 32. Second circumferential limiting hole; 33. First limiting surface; 4. Slide block assembly; 41. First rack; 42. Second rack; 5. First rotating transmission member; 51. First spring shaft; 52. Second mounting hole; 53. Third circumferential limiting hole; 54. Second limiting surface; 6. Spring assembly; 61. Spring bracket; 62. Main compression spring; 63. Supporting plate; 64. Second spring shaft; 7. Coupling member; 71. Circular hole; 72. First circumferential limiting shaft; 8. Rotating shaft; 81. Second circumferential limiting shaft; 82. Second circular shaft surface; 9. Housing; 91. Third limiting surface; 92. Fourth limiting surface. Specific embodiments

[0040] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are implemented on the premise of the above technical solutions of the present invention, and detailed implementation manners and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0041] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0042] Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0043] Embodiment:

[0044] An operating mechanism of a disconnecting switch, with the side operating wheel 2 as the input driving part and the coupling member 7 as the output driven part, and the coupling member 7 is connected to an external contact module;

[0045] Such as Figure 1 And Figure 2As shown, the clamping plates 3, the first rotating transmission parts 5, and the spring assemblies 6 are arranged in pairs and centered. The outermost are two clamping plates 3, followed by two first rotating transmission parts 5, and the spring assemblies 6 are in the middle;

[0046] As Figure 3 shown, the spring assembly 6 is composed of a spring bracket 61, a main compression spring 62, a support plate 63, and a second spring shaft 64. The main compression spring 62 is installed between the spring bracket 61 and the support plate 63. The support plate 63 abuts against the second spring shaft 64, and the second spring shaft 64 is installed in the first mounting hole 31 of the clamping plate 3 as Figure Four shown.

[0047] As Figure 4 , Figure 5 and Figure 6 shown, the clamping plate 3 has a second circumferential limiting hole 32, the first rotating transmission part 5 has a third circumferential limiting hole 53, the rotating shaft 8 has a second circumferential limiting shaft 81 and a second circular shaft surface 82, the coupling part 7 has a circular hole 71 and a first circumferential limiting shaft 72, and the side operating wheel 2 has a first circumferential limiting hole 21 and a first circular shaft surface 22. Among them, the second axial limiting hole and the first axial limiting shaft are matched, the third circumferential limiting hole 53 and the first circumferential limiting hole 21 are matched with the second circumferential limiting shaft 81, the second circular shaft surface 82 is matched with the circular hole 71, and the first circular shaft surface 22 is matched with the small-diameter part of the second circumferential limiting hole 32.

[0048] As Figure 7 shown, the first rotating transmission part 5 has a second mounting hole 52, the first spring shaft 51 is installed in the second mounting hole 52, the spring bracket 61 abuts against the first spring shaft 51, the compression force of the main compression spring 62 is applied to the first spring shaft 51 and the second spring shaft 64, and opposite torques are given to the first rotating transmission part 5 and the clamping plate 3.

[0049] As Figure 8 and Figure 9 shown, the whole mechanism is placed in the housing 9. The second limiting surface 54 on the first rotating transmission part 5 and the first limiting surface 33 on the clamping plate 3 respectively abut against the third limiting surface 91 and the fourth limiting surface 92 in the housing 9.

[0050] As Figure 7 shown, the movement process of the mechanism is as follows:

[0051] The rotation of the side operation wheel 2 drives the first rotating transmission member 5 to rotate clockwise; the first rotating transmission member 5 drives the second spring shaft 64 to rotate and compress the main compression spring 62. At this time, the main compression spring 62 gives the clamping plate 3 a clockwise torque. Since the first limiting surface 33 of the clamping plate 3 abuts against the third limiting surface 91 of the housing 9, the clamping plate 3 will not rotate clockwise. When the spring assembly 6 passes the dead point, the main compression spring 62 gives the clamping plate 3 a counterclockwise torque, and the clamping plate 3 drives the coupling member 7 to rotate rapidly counterclockwise until the first limiting surface 33 at the other end of the clamping plate 3 abuts against the third limiting surface 91 at the other end of the housing 9 and stops moving.

[0052] It is also possible to directly rotate the rotating shaft 8 by the side operation wheel 2 to drive the first rotating transmission member 5 to rotate, and the subsequent movement steps are the same as those described above.

[0053] The above description of the embodiments is to enable those of ordinary skill in the art to understand and use the invention. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the present invention is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. An operating mechanism for a disconnector, characterized in that, it includes a housing (9) with a cavity inside, a first rotating transmission member (5) rotatably arranged in the cavity, a side operating wheel (2) synchronously and rotationally connected to the first rotating transmission member (5), a second rotating transmission member coaxially rotatably arranged with the first rotating transmission member, an output driven member transmissionally connected to the second rotating transmission member, and a spring assembly (6); One end of the spring assembly (6) is connected to the first rotating transmission member (5) and is eccentrically arranged relative to the rotation axis of the first rotating transmission member (5), and the other end is connected to the outer end of the second rotating transmission member (5), so that when the side operating wheel (2) drives the first rotating transmission member (5) to rotate forward, the spring assembly (6) is first compressed until the eccentrically arranged end crosses the connection line between the other end and the rotation axis of the first rotating transmission member (5), and then the elastic potential energy of the spring assembly (6) is released and pushes the second rotating transmission member to drive the output driven member to rotate reversely together.

2. The operating mechanism for a disconnector according to claim 1, characterized in that, a first V-shaped limiting platform (10) and a second V-shaped limiting platform (11) are arranged inside the housing; Both sides of the second rotating transmission member on both sides of the rotation axis can successively abut against both sides of the first V-shaped limiting platform (10) during rotation, so as to be rotationally limited in the cavity; A rotating limiting platform is arranged on one side of the first rotating transmission member (5), and the rotating limiting platform can successively abut against both sides of the second V-shaped limiting platform (11) during rotation, so as to be rotationally limited in the cavity.

3. The operating mechanism for a disconnector according to claim 1, characterized in that, The first rotating transmission member (5) is symmetrically arranged about the rotation axis, a pair of spring assemblies (6) are arranged on the second rotating transmission member, and the spring assemblies (6) are symmetrically arranged about the center of the rotation axis.

4. The operating mechanism for a disconnector according to claim 1, characterized in that, A pair of first rotating transmission members (5) and a pair of second rotating transmission members are respectively arranged and symmetrically arranged on both sides of the spring assembly (6).

5. The operating mechanism for a disconnector according to claim 4, characterized in that, The side operating wheel is arranged in parallel with one of the second rotating transmission members, the rotation axis passes through the through hole on the second rotating transmission member, and is rotationally connected to the side operating wheel (2).

6. The operating mechanism for a disconnector according to claim 1, characterized in that, A polygonal rotation axis through hole is formed on the first rotating transmission member (5), and the rotation axis of the first rotating transmission member (5) is correspondingly in the shape of a polygonal prism.

7. The operating mechanism for a disconnector according to claim 6, characterized in that, The rotation axis is in the shape of a quadrangular prism or an octagonal prism.

8. The operating mechanism for a disconnector according to claim 1, characterized in that, The output driven member is a coupling member (7), a first circumferential limiting shaft (72) is arranged on one side of the coupling member (7), and a second circumferential limiting hole (32) adapted to the first circumferential limiting shaft (72) is arranged on the corresponding second rotating transmission member. The coupling member (7) is synchronously rotationally connected to the second rotating transmission member through the first circumferential limiting shaft (72) and the second circumferential limiting hole (32).

9. The operating mechanism of the disconnector according to claim 8, characterized in that the second circumferential limiting hole (32) includes a circular hole and a plurality of fan-shaped grooves formed on the side of the circular hole along the circumferential direction.

10. The operating mechanism of the disconnector according to claim 8, characterized in that the spring assembly (6) includes a spring bracket (61) with a U-shaped frame at the top and a U-shaped hole at the bottom, a support plate (63) slidably sleeved on the spring bracket (61), a main compression spring (62) with two ends respectively abutted against the bottom of the U-shaped frame and the support plate (63), a first spring shaft (51) abutted against the end of the U-shaped frame, and a second spring shaft (64) abutted against the bottom side of the support plate (63) and slidably embedded in the U-shaped hole; the first spring shaft (51) is connected to the first rotating transmission member (5), and the second spring shaft (64) is connected to the second rotating transmission member.

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