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 used for driving the second gear to rotate, a clamping plate coaxially and rotationally arranged with the second gear, 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 input driving part drives the second gear to rotate 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 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, a second gear rotatably arranged in the cavity, a rotating transmission member rotatably arranged coaxially with the second gear, an output driven member drivingly connected to the rotating transmission member, and a spring assembly;

[0006] 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;

[0007] One end of the spring assembly is connected to the second gear and is eccentrically arranged relative to the rotating shaft of the second gear, and the other end is connected to the outer end of the rotating transmission member so that

[0008] When the input driving part drives the second gear 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 second gear. Then, the elastic potential energy of the spring assembly is released and it pushes the rotating transmission part to drive the output driven part to rotate in the reverse direction together.

[0009] Furthermore, a first V-shaped limiting platform and a second V-shaped limiting platform are provided inside the housing;

[0010] On both sides of the rotating transmission part 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;

[0011] One side of the second gear is provided with a rotating limiting platform, and 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.

[0012] Furthermore, the rotating transmission part is symmetrically arranged with respect to the rotating shaft, and a pair of spring assemblies are provided on the rotating transmission part, and the spring assemblies are symmetrically arranged with respect to the center of the rotating shaft.

[0013] Furthermore, a pair of the second gears and rotating transmission parts are respectively provided and symmetrically arranged on both sides of the spring assembly.

[0014] As a preferred technical solution, the operating mechanism includes a pair of rotating transmission parts arranged in parallel, which form 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.

[0015] Furthermore, a polygonal rotating shaft through hole is provided on the second gear, and the rotating shaft of the second gear is correspondingly in the shape of a polygonal prism. Through the limiting effect of the polygon, the second gear rotates synchronously with the rotating shaft.

[0016] Furthermore, the rotating shaft is in the shape of a quadrangular prism or an octagonal prism.

[0017] Furthermore, the output driven part is a coupling part. A first circumferential limiting shaft is provided on one side of the coupling part, and a second circumferential limiting hole adapted to the first circumferential limiting shaft is provided on the corresponding rotating transmission part.

[0018] The coupling part is synchronously rotatably connected to the rotating transmission part through the first circumferential limiting shaft and the second circumferential limiting hole.

[0019] As a preferred technical solution, the operating mechanism includes a pair of rotating transmission parts arranged in parallel, and each rotating transmission part is synchronously rotatably connected to a coupling part.

[0020] As a preferred technical solution, one end of the rotating shaft of the second gear is cylindrical and is slidably embedded in a through hole on one side of the coupling member.

[0021] Further, the second circumferential limiting hole includes a circular hole and a plurality of fan-shaped grooves opened along the circumference on the side of the circular hole.

[0022] 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;

[0023] The first spring shaft is connected to the second gear, and the second spring shaft is connected to the rotating transmission member.

[0024] Further, a U-shaped groove adapted to the first spring shaft is also opened at the top of the U-shaped frame.

[0025] 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.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1) The 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 closing and opening does not depend on manual operation, thereby accelerating the speed of closing and opening;

[0028] 2) The present invention can be configured with output driven members on both sides with the same rotation direction, and the mechanism placed in the center can be selected according to the order;

[0029] 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

[0030] Figure 1 、 Figure 7 is a three-dimensional structural schematic diagram of an operating mechanism (the housing is not shown) of a disconnector with a single-sided connection output driven member in the present invention;

[0031] Figure 2 is a bottom view of an operating mechanism of a disconnector in the present invention;

[0032] Figure 3 is a structural schematic diagram of the spring assembly;

[0033] Figure 4 is an exploded view of the splint, the second gear and the rotating shaft;

[0034] Figure 5Cross-sectional view after the splint, spring assembly, and coupling are assembled;

[0035] Figure 6 Cross-sectional view of an operating mechanism of a disconnector in the present invention;

[0036] Figure 8 Schematic structural diagram of a rotating shaft for bilaterally connecting an output driven member;

[0037] Figure 9 Schematic three-dimensional structure diagram of an operating mechanism of a disconnector with bilaterally connected output driven members in the present invention;

[0038] Figure 10 Schematic three-dimensional structure diagram of an operating mechanism of a disconnector with unilaterally connected output driven members in the present invention;

[0039] Figure 11 Schematic structural diagram of a housing;

[0040] Explanation of the markings in the figure:

[0041] 1. Top operating wheel; 11. First gear; 3. Splint; 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; 71. Round hole; 72. First circumferential limiting shaft; 8. Rotating shaft; 81. Second circumferential limiting shaft; 82. Second round shaft surface; 9. Housing; 91. Third limiting surface; 92. Fourth limiting surface. Detailed implementation mode

[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 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 denote 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] Some implementation manners 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.

[0045] Embodiment:

[0046] An operating mechanism of a disconnecting switch uses the top operating wheel 1 as the input driving part and the coupling part 7 as the output driven part. The coupling part 7 is connected to the external contact module;

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

[0048] As Figure 3 shown in Figure Four , the spring assembly 6 consists 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

[0049] shown in Figure 4 . Figure 5 As

[0050] shown in Figure 6 , the clamping plate 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, and the coupling part 7 has a circular hole 71 and a first circumferential limiting shaft 72. Among them, the second axial limiting hole cooperates with the first axial limiting shaft, the third circumferential limiting hole 53 and the first circumferential limiting hole 21 cooperate with the second circumferential limiting shaft 81, the second circular shaft surface 82 cooperates with the circular hole 71, and the first circular shaft surface 22 cooperates with the part with a smaller diameter in the second circumferential limiting hole 32.

[0050] As Figure 6 shown in

[0051] , 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 clamping plate 3.

[0051] As Figure 10 shown in Figure 11 and

[0052] shown in Figure 7 , the whole mechanism is placed in the housing 9, and the second limiting surface 54 on the second gear 5, the first limiting surface 33 on the clamping plate 3, the third limiting surface 91 and the fourth limiting surface 92 in the housing 9 are respectively abutted.

[0052] As Figure 7 shown in

[0053] , the top operating wheel 1 is fixedly connected to the first gear 11, and the two can also be regarded as a whole. The slider assembly 4 consists 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 6 shown in , the movement process of the mechanism is as follows:

[0054] The rotation of the top operating wheel 1 drives the slider assembly 4 to slide to the right, and 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] As Figure 8 shown in Figure 9 the figure, the second circular shaft surface 82 of the rotating shaft 8 can also be symmetrically arranged. In this way, there are two coupling members 7 on both sides of the mechanism, and the contact modules symmetrically arranged on both sides of the mechanism can be operated by the top operating wheel 1.

[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 all 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 The invention comprises a housing (9) having a cavity therein, a top operating wheel (1) rotatably arranged in the 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), a second gear (5) rotatably arranged in the cavity, a rotating transmission member rotatably arranged coaxially with the second gear (5), an output driven member drivingly connected to the rotating transmission member, and a spring assembly (6); 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 second gear (5) and is eccentrically arranged relative to the rotating shaft of the second gear (5), and the other end is connected to the outer end of the rotating transmission member so that When the input driving member drives the second gear (5) 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 second gear (5), and then the elastic potential energy of the spring assembly (6) is released and drives the 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 rotating transmission member about the rotating shaft can successively abut against the two sides of the first V-shaped limit 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 second gear (5), and the rotation limit platform can successively abut against two sides of the second V-shaped limit platform (11) during the rotation process, so that the rotation is limited within the cavity.

3. The operating mechanism of the isolating switch according to claim 1, It is characterized in that The rotating transmission member is symmetrically arranged about the rotating shaft, and a pair of spring assemblies (6) are arranged on the rotating transmission member. 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 second gear (5) and the rotating transmission member are respectively provided in a pair 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 second gear (5) is provided with a polygonal shaft through hole, and the shaft of the second gear (5) 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 driven member is a coupling member (7), a first circumferential limit shaft (72) is provided on one side of the coupling member (7), and a second circumferential limit hole (32) adapted to the first circumferential limit shaft (72) is provided on the corresponding rotating transmission member. The coupling member (7) is synchronously rotationally connected to the rotational transmission member through a first circumferential limiting shaft (72) and a second circumferential limiting hole (32).

8. The operating mechanism of the disconnecting switch according to claim 7, wherein, the second circumferential limiting hole (32) includes a circular hole and a plurality of fan-shaped grooves circumferentially formed on the side of the circular hole.

9. The operating mechanism of the disconnecting switch according to claim 7, wherein, 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 second gear (5), and the second spring shaft (64) is connected to the rotational transmission member.

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

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