High-voltage circuit breaker maintenance device

Abstract

The invention discloses a high-voltage circuit breaker maintenance device. The device comprises a mobile support; the first rotating shaft is rotationally arranged at one end of the top of the movable bracket; the second rotating shaft is rotationally arranged at the other end of the top of the movable bracket; the two guide rails are symmetrically arranged on the movable bracket, one ends of the two guide rails are fixedly arranged on the first rotating shaft, and the two guide rails are used for supporting and guiding a handcart circuit breaker; the inclination angle adjusting part is arranged on the second rotating shaft and used for adjusting the inclination angle of the guide rail; the clamping pieces are arranged on the two sides of the guide rail and used for clamping the handcart circuit breaker; and the winch is fixedly arranged at the top of one end, far away from the first rotating shaft, of the movable bracket and is used for dragging the handcart circuit breaker. The guide rail with the adjustable inclination angle is arranged, the gravity borne by the handcart circuit breaker is used for assisting the handcart circuit breaker to be taken out of and put back into the middle-arranged high-voltage switch cabinet, the winch is arranged, an operator can conveniently apply pulling force to the handcart circuit breaker, and time and labor are saved.

Description

Technical Field

[0001] This invention relates to the field of electrical maintenance auxiliary tools, specifically to a high-voltage circuit breaker maintenance device. Background Technology

[0002] Currently, commonly used medium-voltage switchgear typically employs withdrawable trolley circuit breakers. When overhauling these circuit breakers, a dedicated maintenance platform must be placed at the switchgear's circuit breaker compartment exit, and the circuit breaker must be manually dragged onto the platform. Although the trolley circuit breaker is equipped with rollers to reduce resistance during dragging, its weight is generally considerable. Furthermore, the operator, due to the obstruction of the maintenance platform, can only stand on one side of the platform, facing the circuit breaker from the side. Therefore, significant effort is still required to drag the circuit breaker onto the platform, making the operation inconvenient. Similarly, pushing the circuit breaker from the maintenance platform into the circuit breaker compartment after maintenance is also inconvenient. This places high demands on the physical strength of operators when performing large-scale circuit breaker maintenance.

[0003] Therefore, this application proposes a high-voltage circuit breaker maintenance device to solve the above-mentioned technical problems. Summary of the Invention

[0004] The main objective of this invention is to address the aforementioned shortcomings and provide a high-voltage circuit breaker maintenance device that facilitates the dragging of the circuit breaker into and out of the maintenance platform, saving time and effort.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A high-voltage circuit breaker maintenance device includes: a movable support; a first rotating shaft rotatably disposed at one end of the top of the movable support; a second rotating shaft rotatably disposed at the other end of the top of the movable support; two guide rails symmetrically disposed on the movable support and fixed at one end on the first rotating shaft for supporting and guiding the handcart circuit breaker; an angle adjustment component disposed on the second rotating shaft for adjusting the angle of the guide rails; clamping components disposed on both sides of the guide rails for clamping the handcart circuit breaker; and a winch fixedly disposed on the top of the movable support at the end away from the first rotating shaft for pulling the handcart circuit breaker.

[0007] Furthermore, the tilt adjustment component includes an arc-shaped toothed plate fixedly disposed on the guide rail at the end away from the first rotating shaft, a first gear fixedly disposed on the second rotating shaft and meshing with the arc-shaped toothed plate, a worm gear fixedly disposed on the second rotating shaft, a worm rotatably disposed on the movable bracket and meshing with the worm gear, and a handwheel fixedly disposed at one end of the worm.

[0008] Furthermore, a damping strut is hinged to the bottom of the guide rail, and the other end of the damping strut is hinged to the movable bracket.

[0009] Furthermore, the clamping component includes a mounting plate fixedly disposed at the bottom of the two guide rails, a first limiting block symmetrically disposed at the bottom of the mounting plate, a second limiting block fixedly disposed at the bottom of the mounting plate, a clamping plate slidably inserted in the first limiting block and located on both sides of the guide rails, a support plate slidably inserted in the second limiting block, a second gear rotatably disposed at the bottom of the mounting plate and simultaneously meshing with the clamping plate and the support plate, and a spring with one end fixedly disposed on the support plate and the other end fixedly disposed on the second limiting block.

[0010] Furthermore, the bottom of the clamping plate is provided with a clearance groove, and a meshing tooth that meshes with the second gear is provided on one side of the groove wall. The structure of the part of the support plate that meshes with the second gear is the same as that of the clamping plate.

[0011] Furthermore, the contact surface between the clamp and the handcart circuit breaker is fixedly provided with an anti-slip rubber pad.

[0012] Furthermore, a buffer pad is fixedly provided on the contact surface between the support plate and the handcart circuit breaker.

[0013] Furthermore, the winch is a bidirectional self-locking winch.

[0014] The beneficial effects of this invention are reflected in:

[0015] This invention utilizes an adjustable-angle guide rail to assist in the removal and return of the circuit breaker from the centrally located high-voltage switchgear, leveraging the circuit breaker's own gravity. A winch further facilitates the application of pulling force to the circuit breaker by the operator, eliminating the need to stand on one side of the circuit breaker and significantly reducing operator fatigue. The invention also features a clamping mechanism that utilizes the circuit breaker's gravity, eliminating the need for manual clamping and automatically releasing the clamping force when returning the circuit breaker, further saving time and effort. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall structure from another perspective of the present invention;

[0019] Figure 3This is a schematic diagram of the bottom structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the clamping component structure of the present invention;

[0021] Figure 5 This is a schematic diagram of the clamping component structure of the present invention.

[0022] In the diagram: 1. Movable support; 2. First rotating shaft; 3. Second rotating shaft; 4. Guide rail; 5. Tilt adjustment component; 51. Arc-shaped toothed plate; 52. First gear; 53. Worm gear; 54. Worm; 55. Handwheel; 6. Clamping component; 61. Mounting plate; 62. First limit block; 63. Second limit block; 64. Clamping plate; 65. Support plate; 66. Second gear; 67. Spring; 7. Winch; 8. Damping strut; 9. Clearance groove; 10. Meshing teeth; 11. Anti-slip pad; 12. Buffer pad. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. 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.

[0024] like Figure 1-5 As shown, the present invention provides a high-voltage circuit breaker maintenance device, comprising:

[0025] Mobile stand 1;

[0026] The first rotating shaft 2 is rotatably mounted at one end of the top of the movable support 1;

[0027] The second rotating shaft 3 is rotatably mounted at the other end of the top of the movable bracket 1;

[0028] Two guide rails 4 are symmetrically arranged on the movable bracket 1 and one end is fixedly set on the first rotating shaft 2, which are used to support and guide the handcart circuit breaker.

[0029] The tilt adjustment component 5 is mounted on the second rotating shaft 3 and is used to adjust the tilt angle of the guide rail 4;

[0030] Clamping parts 6 are located on both sides of the guide rail 4 and are used to clamp the handcart circuit breaker.

[0031] The winch 7 is fixedly installed on the top of the movable bracket 1 at the end away from the first rotating shaft 2, and is used to pull the handcart circuit breaker.

[0032] When it is necessary to remove the trolley circuit breaker from the centrally mounted high-voltage switchgear, firstly, adjust the tilt angle of the guide rail 4 using the tilt adjustment component 5, so that the guide rail 4 rotates around the first rotating shaft 2, with the end of the guide rail 4 away from the first rotating shaft 2 tilting downwards. Next, push the moving bracket 1 to align the guide rail 4 with the trolley circuit breaker. Then, connect one end of the winch 7 traction rope to the trolley circuit breaker and crank the handle of the winch 7 to pull the trolley circuit breaker from the switchgear onto the guide rail 4. Once the trolley circuit breaker is on the guide rail 4, because the guide rail 4 is tilted downwards, the trolley circuit breaker will move along the guide rail under its own weight. 4. The circuit breaker slides out of the switchgear. At this time, the clamping parts 6 clamp both sides of the circuit breaker to prevent it from slipping off the guide rail 4, thus completing the removal of the circuit breaker. When it is necessary to put the circuit breaker back into the central high-voltage switchgear after maintenance, the tilt angle of the guide rail 4 is adjusted again by the tilt adjustment parts 5, so that the guide rail 4 rotates around the first rotating shaft 2, and the end of the guide rail 4 away from the first rotating shaft 2 tilts upward. The clamping parts 6 are then released, and the circuit breaker slides into the switchgear under its own weight, thus completing the return of the circuit breaker. The operator can directly handle the circuit breaker and use the tilt angle of the guide rail 4 and the traction of the winch 7 to assist in the removal and return of the circuit breaker, which greatly saves the operator's physical exertion and is also more convenient to operate.

[0033] In one embodiment, the tilt adjustment component 5 includes an arc-shaped toothed plate 51 fixedly mounted on the end of the guide rail 4 away from the first rotating shaft 2, a first gear 52 fixedly mounted on the second rotating shaft 3 and meshing with the arc-shaped toothed plate 51, a worm gear 53 fixedly mounted on the second rotating shaft 3, a worm 54 rotatably mounted on the movable bracket 1 and meshing with the worm gear 53, and a handwheel 55 fixedly mounted on one end of the worm gear 54. With this design, rotating the handwheel 55 drives the worm gear 54 to rotate, which in turn drives the worm gear 53 to rotate, which in turn drives the second rotating shaft 3 to rotate, which in turn drives the first gear 52 to rotate, which in turn drives the arc-shaped toothed plate 51 to rotate, and finally, the arc-shaped toothed plate 51 drives the guide rail 4 to rotate around the first rotating shaft 2, thereby achieving adjustment of the tilt angle of the guide rail 4. Furthermore, since the transmission between the worm gear 53 and the worm 54 has a self-locking characteristic, the tilt adjustment component 5 does not require an additional structure for locking the tilt angle.

[0034] In one embodiment, a damping strut 8 is hinged to the bottom of the guide rail 4, and the other end of the damping strut 8 is hinged to the movable bracket 1. When the handcart circuit breaker is on the guide rail 4, its weight is mainly supported by the meshing teeth between the first rotating shaft 2 and the arc-shaped toothed plate 51 and the first gear 52. This has a certain impact on the lifespan of the meshing teeth in the first rotating shaft 2 and the tilt adjustment component 5. Therefore, by setting the damping strut 8, part of the supporting force on the guide rail 4 is shared.

[0035] In one embodiment, the clamping member 6 includes a mounting plate 61 fixedly disposed at the bottom of the two guide rails 4, a first limiting block 62 symmetrically disposed at the bottom of the mounting plate 61, a second limiting block 63 fixedly disposed at the bottom of the mounting plate 61, a clamping plate 64 slidably inserted in the first limiting block 62 and located on both sides of the guide rails 4, a support plate 65 slidably inserted in the second limiting block 63, a second gear 66 rotatably disposed at the bottom of the mounting plate 61 and simultaneously meshing with the clamping plate 64 and the support plate 65, and a spring 67 with one end fixedly disposed on the support plate 65 and the other end fixedly disposed on the second limiting block 63.

[0036] With this design, when the circuit breaker slides into the guide rail 4, it first contacts the support plate 65. The circuit breaker presses against the support plate 65 and drives the support plate 65 to slide along the second limit block 63. At this time, the spring 67 is stretched to buffer the circuit breaker. The support plate 65 drives the second gear 66 to rotate. The second gear 66 drives the clamping plate 64 to move closer to the guide rail 4 along the first limit block 62 until the clamping plate 64 clamps the circuit breaker. The clamping plate 64 stops moving and the support plate 65 stops moving. When the circuit breaker slides out of the guide rail 4, the end of the guide rail 4 from the first rotating shaft 2 is in an inclined upward state. Therefore, the circuit breaker no longer applies pressure to the support plate 65, and the clamping plate 64 no longer applies clamping force to the circuit breaker. That is, the clamping effect on the circuit breaker is released. The circuit breaker slides out of the guide rail 4 under its own weight. The spring 67 contracts and drives the clamping part 6 to reset.

[0037] In one embodiment, the bottom of the clamping plate 64 is provided with a clearance groove 9, and a meshing tooth 10 that meshes with the second gear 66 is provided on one side of the groove wall. The structure of the part of the support plate 65 that meshes with the second gear 66 is the same as that of the clamping plate 64. With this design, the clearance groove 9 is used to accommodate the second gear 66, and the meshing tooth 10 enables the transmission of kinetic energy between the clamping plate 64 and the second gear 66, as well as between the support plate 65 and the second gear 66.

[0038] In one embodiment, an anti-slip pad 11 is fixedly provided on the contact surface between the clamping plate 64 and the circuit breaker. This design increases the coefficient of friction between the clamping plate 64 and the circuit breaker, preventing the circuit breaker from easily sliding after being clamped by the clamping plate 64.

[0039] In one embodiment, a buffer pad 12 is fixedly provided on the contact surface between the support plate 65 and the handcart circuit breaker. This design buffers the contact process between the handcart circuit breaker and the support plate 65, preventing damage to the handcart circuit breaker due to a large impact.

[0040] In one embodiment, the winch 7 is a bidirectional self-locking winch. When returning the circuit breaker to the switchgear, the tilt angle of the guide rail 4 needs to be adjusted. The guide rail 4 is gradually adjusted from a downward tilt to a horizontal position, and then from a horizontal position to an upward tilt. During this adjustment, the circuit breaker no longer applies pressure to the support plate 65; that is, the clamping plate 64 releases its clamping force on the circuit breaker, and the circuit breaker tends to slide out of the guide rail 4. By setting the winch 7 as a bidirectional self-locking winch, the winch 7 can hold the circuit breaker in place at this time. After the tilt angle of the guide rail 4 is adjusted, the circuit breaker has sufficient downward potential energy. Then, the handle of the winch 7 is slowly cranked, allowing the circuit breaker to slowly slide into the switchgear, ensuring stability during the return process.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0042] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0043] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

Claims

1. A high-voltage circuit breaker maintenance device, characterized in that, include: Mobile support (1); The first rotating shaft (2) is rotatably mounted at one end of the top of the movable support (1); The second rotating shaft (3) is rotatably mounted at the other end of the top of the movable bracket (1); Two guide rails (4) are symmetrically arranged on the movable bracket (1) and one end is fixedly set on the first rotating shaft (2) for supporting and guiding the handcart circuit breaker; An angle adjustment component (5) is provided on the second rotating shaft (3) for adjusting the angle of the guide rail (4); Clamping parts (6) are provided on both sides of the guide rail (4) for clamping the handcart circuit breaker; The winch (7) is fixedly installed on the top of the movable bracket (1) at the end away from the first rotating shaft (2) and is used to pull the handcart circuit breaker.

2. The high-voltage circuit breaker maintenance device as described in claim 1, characterized in that, The tilt adjustment component (5) includes an arc-shaped toothed plate (51) fixedly mounted on the guide rail (4) at one end away from the first rotating shaft (2), a first gear (52) fixedly mounted on the second rotating shaft (3) and meshing with the arc-shaped toothed plate (51), a worm gear (53) fixedly mounted on the second rotating shaft (3), a worm (54) rotatably mounted on the movable bracket (1) and meshing with the worm gear (53), and a handwheel (55) fixedly mounted on one end of the worm gear (54).

3. The high-voltage circuit breaker maintenance device as described in claim 2, characterized in that, The bottom of the guide rail (4) is hinged with a damping strut (8), and the other end of the damping strut (8) is hinged to the movable bracket (1).

4. The high-voltage circuit breaker maintenance device as described in claim 3, characterized in that, The clamping member (6) includes a mounting plate (61) fixedly disposed at the bottom of the two guide rails (4), a first limiting block (62) symmetrically disposed at the bottom of the mounting plate (61), a second limiting block (63) fixedly disposed at the bottom of the mounting plate (61), a clamping plate (64) slidably inserted in the first limiting block (62) and located on both sides of the guide rail (4), a support plate (65) slidably inserted in the second limiting block (63), a second gear (66) rotatably disposed at the bottom of the mounting plate (61) and simultaneously meshing with the clamping plate (64) and the support plate (65), and a spring (67) with one end fixedly disposed on the support plate (65) and the other end fixedly disposed on the second limiting block (63).

5. A high-voltage circuit breaker maintenance device as described in claim 4, characterized in that, The bottom of the clamping plate (64) is provided with a relief groove (9), and a meshing tooth (10) that meshes with the second gear (66) is provided on the groove wall on one side of the relief groove (9). The structure of the part of the support plate (65) that meshes with the second gear (66) is the same as that of the clamping plate (64).

6. A high-voltage circuit breaker maintenance device as described in claim 5, characterized in that, The contact surface between the clamp (64) and the handcart circuit breaker is fixedly provided with an anti-slip pad (11).

7. A high-voltage circuit breaker maintenance device as described in claim 5, characterized in that, A buffer pad (12) is fixedly provided on the contact surface between the support plate (65) and the handcart circuit breaker.

8. A high-voltage circuit breaker maintenance device as described in claim 1, characterized in that, The winch (7) is a two-way self-locking winch.

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