Isolation handcart for high-voltage switch cabinet

Abstract

The utility model discloses an isolation handcart for a high-voltage switch cabinet, which comprises a handcart body provided with a circuit breaker. The circuit breaker is provided with a moving contact and a fixing piece used for fixing the moving contact, a first fastening piece is arranged in the moving contact, and the first fastening piece penetrates through one end of the moving contact and then is connected with the fixing piece, so that one end of the moving contact is fixed on the circuit breaker; a grounding piece is further arranged on the bottom face of the vehicle body, and the grounding piece is rotationally installed on the bottom face of the vehicle body. Therefore, installation and replacement of the moving contact are simple and convenient, maintenance is convenient, and power failure time can be reduced. Besides, the grounding piece is arranged at the bottom of the vehicle body, so that the whole-course reliable grounding can be realized through frictional contact no matter the switch cabinet is in a running state or a quit state, the electric shock risk caused by static accumulation or fault current is avoided, the residual charge or induced voltage after the equipment is powered off can be quickly discharged, and the safety of maintenance personnel is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of switchgear technology, specifically to an isolating handcart for high-voltage switchgear. Background Technology

[0002] The YN6 series isolating handcart is a key component in high-voltage switchgear, primarily used for isolation, grounding, and connection functions in power systems. Due to its safety, reliability, and ease of operation, it is widely used. However, isolating handcarts are prone to contact wear during use, necessitating replacement. How to quickly replace these contacts is a pressing issue that needs to be addressed. Utility Model Content

[0003] The purpose of this invention is to provide an isolating handcart for high-voltage switchgear to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an isolating handcart for a high-voltage switchgear, comprising a car body, on which a circuit breaker is mounted; the circuit breaker is provided with a moving contact and a fixing member for fixing the moving contact, and the moving contact has a first fastener inside, which passes through one end of the moving contact and connects to the fixing member to fix one end of the moving contact to the circuit breaker; a grounding member is also provided on the bottom surface of the car body, and the grounding member is rotatably mounted on the bottom surface of the car body.

[0005] As a preferred technical solution of this utility model: the vehicle body is also provided with a lead screw, and the vehicle body is also provided with a handle for driving the lead screw to rotate.

[0006] As a preferred technical solution of this utility model: the fixing member is connected to the circuit breaker through a second fastener, and the other end of the fixing member is connected to a conductive busbar.

[0007] As a preferred technical solution of this utility model: a movable frame is movably installed on both sides of the vehicle body, and the movable frame contacts the switch cabinet through rollers.

[0008] As a preferred technical solution of this utility model: the vehicle body is also provided with a guide rail, and the vehicle body is guided to move through the guide rail.

[0009] As a preferred technical solution of this utility model: the side of the guide rail is fixed to the vehicle body, and the bottom surface of the guide rail is connected to the movable frame through a connecting frame.

[0010] As a preferred technical solution of this utility model: the end of the guide rail away from the vehicle body is also provided with a roller.

[0011] As a preferred technical solution of this utility model: the circuit breaker is also provided with an end cover, and a ventilation hole is provided on the end cover.

[0012] The beneficial effects of this utility model using the above technical solution are as follows: By connecting the first fastener, which passes through one end of the moving contact, to the fixing component, one end of the moving contact is fixed to the circuit breaker. This makes the installation and replacement of the moving contact simple and convenient, facilitating maintenance and reducing power outage time. Furthermore, since a grounding component is also provided at the bottom of the vehicle body, reliable grounding can be achieved throughout the entire process, regardless of whether the switchgear is in operation or deactivated. This avoids the risk of electric shock due to static electricity accumulation or fault current, and can quickly discharge residual charge or induced voltage after power failure, ensuring the safety of maintenance personnel. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0015] Figure 3 This is a side view of the main structure of the present utility model;

[0016] Figure 4 for Figure 3 A magnified view of a portion of point B in the middle.

[0017] In the diagram: 1. Vehicle body; 2. Circuit breaker; 3. Moving contact; 4. Guide rail; 5. Moving frame; 6. Grounding component; 7. Lead screw; 8. Handle; 9. Connecting frame; 10. Roller; 11. First fastener; 12. Fixing component; 13. Second fastener; 14. Conductive busbar; 15. End cap; 16. Ventilation hole. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.

[0019] Please see Figure 1-4 This utility model provides an embodiment of an isolating handcart for a high-voltage switchgear, comprising a car body 1, on which a circuit breaker 2 is mounted; the circuit breaker 2 is provided with a moving contact 3 and a fixing member 12 for fixing the moving contact 3, and the moving contact 3 is provided with a first fastener 11 inside, and the first fastener 11 passes through one end of the moving contact 3 and is connected to the fixing member 12 to fix one end of the moving contact 3 to the circuit breaker 2; a grounding member 6 is also provided on the bottom surface of the car body 1, and the grounding member 6 is rotatably mounted on the bottom surface of the car body 1.

[0020] In summary, by connecting the first fastener 11, which passes through one end of the moving contact 3, to the fixing member 12, one end of the moving contact 3 is fixed to the circuit breaker 2. This makes the installation and replacement of the moving contact 3 simple and convenient, facilitating maintenance and reducing power outage time. Furthermore, since a grounding member 6 is also provided at the bottom of the vehicle body 1, reliable grounding can be achieved throughout the entire process via frictional contact, regardless of whether the switchgear is in operation or deactivated. This avoids the risk of electric shock due to static electricity accumulation or fault current, and can quickly discharge residual charge or induced voltage after power failure, ensuring the safety of maintenance personnel.

[0021] In addition, to improve the structural strength of the vehicle body 1, it can be made of high-strength metal steel plate, and to reduce resistance, the contact points of the moving contact 3 and the stationary contact are treated with silver plating or made of copper-tungsten alloy.

[0022] Furthermore, since the vehicle body 1 is also equipped with a lead screw 7 and a handle 8 for driving the lead screw 7 to rotate, the movement of the vehicle body 1 is stable and reliable. Moreover, as long as the lead screw 7 does not rotate after movement, the vehicle body 1 will not experience any displacement.

[0023] Furthermore, since the fixing member 12 is connected to the circuit breaker 2 via the provided second fastener 13, and the other end of the fixing member 12 is connected to the provided conductive busbar 14, the fixing member 12 is easy to assemble and disassemble, facilitating its installation and replacement; wherein, the first fastener 11 and the second fastener 13 are preferably bolts.

[0024] Based on the above solution, since the movable frame 5 is movably installed on both sides of the vehicle body 1, and the movable frame 5 contacts the switch cabinet through rollers, rolling friction is used instead of sliding friction, thus improving the stability of the vehicle body 1 when moving and reducing the noise generated when the vehicle body 1 moves.

[0025] Furthermore, since the vehicle body 1 is also provided with a guide rail 4, and the vehicle body 1 is guided to move by the guide rail 4, the guide rail 4 can be used to guide the vehicle body 1 to slide in a certain direction, so as to ensure that the moving contact 3 can be accurately and reliably connected with the stationary contact, or that the moving contact separation resistance will not be too large due to the offset of the vehicle body 1 inside the switch cabinet when separating.

[0026] Furthermore, since the side of the guide rail 4 is fixed to the vehicle body 1, and the bottom surface of the guide rail 4 is connected to the movable frame 5 through the connecting frame 9, the position of the guide rail 4 will not easily change after connection. The guide rail 4 is movably connected to the movable frame 5 and the vehicle body 1, thus giving the movable frame 5 and the guide rail 4 the advantage of easy assembly and disassembly.

[0027] Meanwhile, a roller 10 is provided at the end of the guide rail 4 away from the vehicle body 1. Therefore, the roller 10 can reduce the resistance when the vehicle body 1 moves, and can also reduce the noise generated when the vehicle body 1 moves. Based on this, the movement of the vehicle body 1 is smooth and quiet.

[0028] In addition, the circuit breaker 2 is also provided with an end cover 15, and a ventilation hole 16 is provided on the end cover 15, so that the ventilation hole 16 can be added to facilitate the heat dissipation of the circuit breaker.

[0029] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. An isolating trolley for high-voltage switchgear, characterized in that: Includes a vehicle body (1), on which a circuit breaker (2) is provided; The circuit breaker (2) is provided with a moving contact (3) and a fixing member (12) for fixing the moving contact (3). The moving contact (3) is provided with a first fastener (11) inside. The first fastener (11) passes through one end of the moving contact (3) and is connected to the fixing member (12) to fix one end of the moving contact (3) on the circuit breaker (2). The bottom surface of the vehicle body (1) is also provided with a grounding component (6), and the grounding component (6) is rotatably mounted on the bottom surface of the vehicle body (1).

2. The isolating handcart for high-voltage switchgear according to claim 1, characterized in that: The vehicle body (1) is also provided with a lead screw (7) and a handle (8) for driving the lead screw (7) to rotate.

3. The isolating handcart for high-voltage switchgear according to claim 2, characterized in that: The fastener (12) is connected to the circuit breaker (2) by a second fastener (13), and the other end of the fastener (12) is connected to a conductive busbar (14).

4. An isolating handcart for a high-voltage switchgear according to claim 1, 2, or 3, characterized in that: The vehicle body (1) is equipped with movable frames (5) on both sides, and the movable frames (5) are in contact with the switch cabinet through rollers.

5. An isolating handcart for a high-voltage switchgear according to claim 4, characterized in that: The vehicle body (1) is also provided with a guide rail (4), and the vehicle body (1) is guided to move through the guide rail (4).

6. The isolating handcart for high-voltage switchgear according to claim 5, characterized in that: The side of the guide rail (4) is fixed to the vehicle body (1), and the bottom surface of the guide rail (4) is connected to the movable frame (5) through the connecting frame (9).

7. An isolating trolley for a high-voltage switchgear according to claim 6, characterized in that: The guide rail (4) is also provided with a roller (10) at the end away from the vehicle body (1).

8. An isolating trolley for a high-voltage switchgear according to claim 7, characterized in that: The circuit breaker (2) is also provided with an end cover (15), and a ventilation hole (16) is provided on the end cover (15).

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