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, which comprises a shell internally provided with a cavity, a second gear rotationally arranged in the cavity, a top operating wheel and a side operating wheel for driving the second gear to rotate, a clamping plate coaxially and rotationally arranged with the second gear, and an output driven piece in transmission connection with the clamping plate, and a spring assembly; one end of the spring assembly is connected with the second gear and eccentrically arranged relative to a rotating shaft of the second gear, and the other end of the spring assembly is connected with the outer end of the clamping plate, so that when the second gear rotates forwards, the spring assembly is compressed until the eccentrically arranged end crosses a connecting line of the other end and the rotating shaft of the second gear; and then the spring assembly releases elastic potential energy and pushes the clamping plate to drive the output follower to reversely rotate together. Compared with the prior art, flexible transmission is adopted between the input driving part and the output driven part, 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, 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, an input driving member for driving the first rotating transmission member to rotate, a second rotating transmission member rotatably arranged coaxially with the first rotating transmission member, an output driven member drivingly connected to the second rotating transmission member, and a spring assembly;

[0006] The first rotating transmission member has a toothed transmission structure, which is denoted as a second gear. The input active member includes a top operating wheel rotatably arranged in the housing, a first gear arranged at the lower end of the top operating wheel, a slider assembly slidably arranged in the housing, and a side operating wheel synchronously rotatably connected with the first rotating transmission member.

[0007] The slider assembly includes a sliding plate, and an upper connecting member and a lower gear condition respectively arranged on the upper and lower sides of the sliding plate, the upper connecting member meshes with the first gear, and the lower gear condition meshes with the second gear;

[0008] 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

[0009] When the input driving member drives the first rotating transmission member to rotate forward, the spring assembly is first compressed until the eccentrically arranged end crosses the connection line between 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 pushes the second rotating transmission member to drive the output driven member to rotate reversely together.

[0010] Further, a first V-shaped limiting platform and a second V-shaped limiting platform are arranged in the housing;

[0011] Both sides of the second rotating transmission member with respect to the rotating shaft can be successively abutted against both sides of the first V-shaped limiting platform during the rotation process, so as to be rotationally limited in the cavity;

[0012] One side of the first rotating transmission member is provided with a rotating limiting platform, and the rotating limiting platform can be successively abutted against both sides of the second V-shaped limiting platform during the rotation process, so as to be rotationally limited in the cavity.

[0013] Further, the second rotating transmission member is symmetrically arranged with respect to the rotating shaft, and a pair of spring assemblies are arranged on the second rotating transmission member, and the spring assemblies are symmetrically arranged with respect to the center of the rotating shaft.

[0014] Further, a pair of the first rotating transmission members and a pair of the second rotating transmission members are respectively provided and are symmetrically arranged on both sides of the spring assembly.

[0015] As a preferred technical solution, the operating mechanism includes a pair of second rotating transmission members arranged in parallel, and the second rotating transmission members arranged in parallel form a pair of clamping plates. 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.

[0016] Further, a polygonal rotating shaft through hole is formed 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.

[0017] Further, the rotating shaft is in the shape of a quadrangular prism or an octagonal prism.

[0018] Further, the output driven member is a coupling member, and a first circumferential limiting shaft is arranged on one side of the coupling member, and a second circumferential limiting hole adapted to the first circumferential limiting shaft is arranged on the corresponding second rotating transmission member.

[0019] The coupling piece is synchronously rotationally connected to the second rotating transmission piece through the first circumferential limiting shaft and the second circumferential limiting hole.

[0020] As a preferred technical solution, the operating mechanism includes a pair of second rotating transmission pieces arranged in parallel, and each second rotating transmission piece is synchronously rotationally connected with a coupling piece.

[0021] As a preferred technical solution, one end of the rotating shaft of the first rotating transmission piece is cylindrical and is slidably embedded in a through hole on one side of the coupling piece.

[0022] Further, the second circumferential limiting hole includes a circular hole and a plurality of sector grooves formed on the side of the circular hole along the circumferential direction.

[0023] 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 abutted against the bottom of the U-shaped frame and the support plate, a first spring shaft abutted against the end of the U-shaped frame, and a second spring shaft abutted against the bottom side of the support plate and slidably embedded in the U-shaped hole;

[0024] The first spring shaft is connected to the first rotating transmission piece, and the second spring shaft is connected to the second rotating transmission piece.

[0025] Further, a U-shaped groove adapted to the first spring shaft is further formed at the top end of the U-shaped frame.

[0026] 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.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1) A flexible transmission is adopted between the input driving part and the output driven part 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;

[0029] 2) The present invention can be configured with output driven parts on both sides with the same rotation direction, and an in-centered placed mechanism can be selected according to the order;

[0030] 3) Most parts of the present invention use sheet metal processing technology, which is simple to manufacture and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 、 Figure 8 is a three-dimensional structural schematic diagram of an operating mechanism (the housing is not shown) of a disconnector with a single-sided connected output driven part in the present invention;

[0032] Figure 2 is a bottom view of an operating mechanism of a disconnector in the present invention;

[0033] Figure 3 It is a schematic structural diagram of a spring assembly;

[0034] Figure 4 It is an exploded view of a clamping plate, a second gear, and a rotating shaft;

[0035] Figure 5 It is a cross-sectional view after the side operating wheel, the clamping plate, the spring assembly, and the coupling piece are assembled;

[0036] Figure 6 It is a schematic structural diagram of the side operating wheel;

[0037] Figure 7 It is a cross-sectional view of an operating mechanism of a disconnector in the present invention;

[0038] Figure 9 It is a three-dimensional structural schematic diagram of an operating mechanism of a disconnector with a single-sided connection output driven member in the present invention;

[0039] Figure 10 It is a schematic structural diagram of the housing;

[0040] Explanation of the markings in the figure:

[0041] 1. Top operating wheel; 11. First gear; 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. Second gear; 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. Support plate; 64. Second spring shaft; 7. Coupling piece; 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

[0042] 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 the detailed implementation manners and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0043] 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.

[0044] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments may be combined with each other.

[0045] Embodiment:

[0046] An operating mechanism of a disconnector, where the top operating wheel 1 or the side operating wheel 2 is the input driving member, the coupling member 7 is the output driven member, and the coupling member 7 is connected to the external contact module;

[0047] As Figure 1 With Figure 2 shown, the splints 3, the second gears 5, and the spring assemblies 6 are arranged in pairs and centered. The outermost are two splints 3, followed by two second gears 5, and the spring assemblies 6 are in the middle;

[0048] 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 splint 3 as Figure Four shown.

[0049] As Figure 4 , Figure 5 With Figure 6 shown, the splint 3 has a second circumferential limiting hole 32, the second gear 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 member 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 part with a smaller diameter in the second circumferential limiting hole 32.

[0050] As Figure 7 shown, the second gear 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, and the compression force of the main compression spring 62 is applied to the first spring shaft 51 and the second spring shaft 64, and gives opposite torques to the second gear 5 and the splint 3.

[0051] As Figure 9 With Figure 10 shown, the whole mechanism is placed in the housing 9, and the second limiting surface 54 on the second gear 5 and the first limiting surface 33 on the splint 3 respectively abut against the third limiting surface 91 and the fourth limiting surface 92 in the housing 9.

[0052] AsFigure 8 As shown, the top operation wheel 1 is fixedly connected to the first gear 11, and the two can also be regarded as a whole. The slider assembly 4 is composed of a first rack 41 and a second rack 42, which are fixedly connected. The first gear 11 meshes with the first rack 41, and the second rack 42 meshes with the second gear 5.

[0053] As Figure 7 shown, the movement process of the mechanism is as follows:

[0054] When the top operation wheel 1 rotates, it drives the slider assembly 4 to slide to the right. The second rack 42 drives the second gear 5 to rotate clockwise. The second gear 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 counterclockwise rapidly 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.

[0055] It is also possible to directly rotate the rotating shaft 8 by the side operation wheel 2 to drive the second gear 5 to rotate, and the subsequent movement steps are the same as those described above.

[0056] 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 an isolating switch, It is characterized in that It comprises a housing (9) having a cavity therein, a first rotating transmission member rotatably disposed in the cavity, an input driving member for driving the first rotating transmission member to rotate, a second rotating transmission member rotatably disposed coaxially with the first rotating transmission member, an output driven member drivingly connected to the second rotating transmission member, and a spring assembly (6); The first rotating transmission member has a toothed transmission structure, which is denoted as a second gear (5), and the input active member comprises a top operating wheel (1) rotatably arranged in a housing (9), a first gear (11) arranged at the lower end of the top operating wheel (1), a slider assembly (4) slidably arranged in the housing (9), and a side operating wheel (2) rotatably connected to the first rotating transmission member; The slider assembly (4) comprises a sliding plate, and an upper connecting member and a lower tooth condition respectively arranged on the upper and lower sides of the sliding plate, the upper connecting member meshing with the first gear (11), and the lower tooth condition meshing with the second gear (5); One end of the spring assembly (6) 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 When the input active member drives the first rotating transmission member to rotate in the forward direction, the spring assembly (6) is first compressed until the eccentrically arranged 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 (6) is released and drives the second rotating transmission member to drive the output driven member to rotate in the reverse direction.

2. The operating mechanism of the isolating switch according to claim 1, It is characterized in that A first V-shaped limit platform (10) and a second V-shaped limit platform (11) are provided in the shell; The two sides of the second rotating transmission member about the rotating shaft can successively abut against the two sides of the first V-shaped limiting platform (10) during the rotation process, so that the rotation is limited within the cavity; A rotation limit platform is provided on one side of the first rotation transmission member, and the rotation limit platform can successively abut against the two sides of the second V-shaped limit platform (11) during the rotation process, so that the rotation is limited in the cavity.

3. The operating mechanism of the isolating switch according to claim 1, It is characterized in that The first rotating transmission member is symmetrically arranged about the rotating shaft, and the second rotating transmission member is provided with a pair of spring assemblies (6), and the spring assemblies (6) are symmetrically arranged about the center of the rotating shaft.

4. The operating mechanism of the isolating switch according to claim 1, It is characterized in that The first rotating transmission member and the second rotating transmission member are provided in a pair respectively and are symmetrically arranged on both sides of the spring assembly (6).

5. The operating mechanism of the isolating switch according to claim 1, It is characterized in that The first rotating transmission member is provided with a polygonal rotating shaft through hole, and the rotating shaft of the first rotating transmission member is correspondingly in the shape of a polygonal prism.

6. The operating mechanism of the isolating switch according to claim 5, It is characterized in that The rotating shaft is in the shape of a quadrangular prism or an octagonal prism.

7. The operating mechanism of the isolating switch according to claim 1, It is characterized in that The output follower is a coupling member (7). A first circumferential limiting shaft (72) is provided on one side of the coupling member (7). A second circumferential limiting hole (32) adapted to the first circumferential limiting shaft (72) is provided 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).

8. The operating mechanism of the disconnecting switch according to claim 7, characterized in that the second circumferential limiting hole (32) includes a circular hole and a plurality of sector grooves circumferentially provided on the side of the circular hole.

9. The operating mechanism of the disconnecting switch according to claim 7, 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 abutting against the bottom of the U-shaped frame and the support plate (63), a first spring shaft (51) abutting against the end of the U-shaped frame, and a second spring shaft (64) abutting 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, and the second spring shaft (64) is connected to the second rotating transmission member.

10. The operating mechanism of the disconnecting switch according to claim 9, characterized in that a U-shaped groove adapted to the first spring shaft (51) is further provided at the top of the U-shaped frame.

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