Protective device for grounding knife switch of high-voltage switch cabinet

Abstract

The utility model relates to the technical field of grounding knife-switches, in particular to a high-voltage switch cabinet grounding knife-switch protection device which comprises a base and a maintenance device, a switch body is installed on the surface of the base, the maintenance device is arranged on the surface of the base and comprises a sliding rail, the sliding rail is fixedly connected with the base, and one side of the switch body is fixedly connected with a sliding sleeve. The lower surface of the sliding sleeve is provided with a first hole, the lower surface of the sliding rail is fixedly connected with a supporting plate, the surface of the supporting plate is fixedly connected with a rod body, the rod body is inserted into the first hole in the lower surface of the sliding sleeve, the lower surface of the gate body is fixedly connected with a baffle, the surface of the baffle is provided with a second hole, and the lower surface of the supporting plate is provided with a threaded hole. According to the device, the brake body can be conveniently and rapidly disassembled and assembled, the installation steps of the brake body are reduced, potential safety hazards generated when equipment is maintained can be conveniently reduced, the stability and safety of the equipment are improved, the working efficiency of the equipment is improved, and overhauling is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of earthing switches, in particular to a protection device for the earthing switch of a high-voltage switch cabinet. Background Art

[0002] The earthing switch of a high-voltage switch cabinet is an important device to ensure the safe operation of the power system. It is usually installed inside the high-voltage switch cabinet and is used to reliably ground the equipment during maintenance or repair to release residual charges and prevent personal injury and equipment damage caused by accidental power-on. The operation of the earthing switch needs to strictly follow safety regulations. It has a solid structure, good electrical conductivity and mechanical strength. During normal operation, the earthing switch is in the open position. When maintenance work is required, it is closed to achieve earthing protection.

[0003] In the prior art, such as the utility model with the publication number of CN204376211U, the utility model relates to the field of high-voltage power distribution equipment, specifically to an intelligent earthing switch for a high-voltage switch cabinet. It includes a wire connection seat, a cover plate, an insulator sensor, a driver box, and a driver. Among them, a control box is provided under the bottom plate, the driver box is welded to the bottom plate as a whole, the insulator sensor is installed on the driver box, the wire connection seat is provided on the insulator sensor, an electromagnetic driver is provided inside the driver box, a set of buffers and Hall sensors are provided at each end of the driver, drive plates are sleeved on the drive shafts at both ends of the driver, the other end of the drive plate is connected to a nut, a transmission shaft is sleeved inside it, the transmission shaft is fixed by bearing sleeves and bearing seats at both ends, the bearing seats are fixed to the driver box by screws, and three-phase knife switches are evenly distributed on the transmission shaft. The knife switches are fixed to the transmission shaft through a knife-switch fixing assembly. The structure of this solution is simple, does not require manual operation, and has a high degree of automation. However, most of the existing knife switches are installed by riveting or bolts. After long-term use, the bolts are prone to rust, and at the same time, due to the large number of bolts, accidents are likely to occur during the disassembly process, resulting in leakage of the knife switch and potential safety hazards.

[0004] In order to solve the problem that most of the existing knife switches are installed by riveting or bolts, after long-term use, the bolts are prone to rust, and at the same time, due to the large number of bolts, accidents are likely to occur during the disassembly process, resulting in leakage of the knife switch, the prior art uses a tool-assisted method for processing, but this increases the maintenance difficulty of the equipment, thereby leading to potential safety hazards. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the shortcomings in the prior art that most of the existing knife switches are installed by riveting or bolts, after long-term use, the bolts are prone to rust, and at the same time, due to the large number of bolts, accidents are likely to occur during the disassembly process, resulting in leakage of the knife switch, and to propose a protection device for the earthing switch of a high-voltage switch cabinet.

[0006] To achieve the above object, the utility model adopts the following technical solution: a grounding knife protection device for a high-voltage switch cabinet, including a base and a maintenance device. A knife body is installed on the surface of the base, and the maintenance device is arranged on the surface of the base. The maintenance device includes a slide rail, and the slide rail is fixedly connected to the base. One side of the knife body is fixedly connected with a sliding sleeve, and the sliding sleeve is slidably connected to the slide rail. A hole one is opened on the lower surface of the sliding sleeve, and a support plate is fixedly connected to the lower surface of the slide rail. A rod body is fixedly connected to the surface of the support plate, and the rod body is inserted into the hole one on the lower surface of the sliding sleeve. A baffle is fixedly connected to the lower surface of the knife body. By setting the maintenance device, it is convenient to quickly disassemble and install the knife body, reducing the installation steps of the knife body, facilitating the reduction of potential safety hazards during equipment maintenance, increasing the stability and safety of the equipment, improving the working efficiency of the equipment, and facilitating maintenance.

[0007] Preferably, a hole two is opened on the surface of the baffle, a threaded hole is opened on the lower surface of the support plate, and a lead screw is threadedly connected to the lower surface of the support plate. By setting the lead screw, it is convenient to position the knife body, increasing the usability of the equipment and reducing the operation difficulty of the equipment.

[0008] Preferably, the lead screw is inserted into the hole two on the surface of the baffle, and a knob is fixedly connected to one side of the lead screw. By setting the knob, during use, the knob is convenient to drive the lead screw to rotate, assisting the lead screw to position the knife body, and increasing the usability of the equipment.

[0009] Preferably, there are two rod bodies, and the two rod bodies are arranged in mirror symmetry. By setting the rod bodies, during use, the rod bodies are convenient to fix the knife body, increasing the usability of the equipment, reducing the operation difficulty of the equipment, and facilitating use.

[0010] Preferably, a spring-back assembly is arranged on the lower surface of the knife body. The spring-back assembly includes a push plate, and the push plate is fixedly connected to the knife body. A support is fixedly connected to the surface of the base, and a hole three is opened on the surface of the support. An arc-shaped rod is slidably connected to the inner wall of the hole three on the surface of the support. By setting the spring-back assembly, it is convenient to assist in disassembling the knife body and push the knife body to slide, increasing the usability of the equipment and reducing the operation difficulty of the equipment.

[0011] Preferably, a pressing plate is fixedly connected to the surface of the arc-shaped rod, and the arc-shaped rod is arranged in a "U" shape. By setting the arc-shaped rod, it is convenient to drive the pressing plate to slide, increasing the usability of the equipment, reducing the operation difficulty of the equipment, and facilitating use.

[0012] Preferably, a pressure spring is fixedly connected to the surface of the arc-shaped rod. One side of the pressure spring away from the arc-shaped rod is fixedly connected to the bracket. The surface of the arc-shaped rod penetrates through the bracket and is fixedly connected to a pressing plate. By setting the pressure spring, during use, the pressure spring generates elastic force to squeeze the pressing plate, assisting the pressing plate to move, and improving the usability of the device.

[0013] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0014] In the present utility model, by setting the maintenance device and the spring-back component, during use, the sliding sleeve is sleeved on the sliding rail. At this time, the rod body is inserted into the sliding sleeve, and at the same time, the pushing plate abuts against the pressing plate. The pressing plate slides upward under force. When the baffle reaches the lead screw, rotate the knob to drive the lead screw to insert into the baffle to complete positioning. The brake body is installed through the lead screw. Reverse-rotate the knob, and the knob drives the lead screw away from the baffle, then the brake body can be lifted upward to remove the brake body. By setting the present utility model, it is convenient to quickly disassemble and install the brake body, reducing the installation steps of the brake body, facilitating the reduction of potential safety hazards generated during equipment maintenance, increasing the stability and safety of the equipment, improving the working efficiency of the equipment, and facilitating maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the grounding knife switch protection device for high-voltage switchgear proposed by the present utility model;

[0016] Figure 2 is a side view structural schematic diagram of the grounding knife switch protection device for high-voltage switchgear proposed by the present utility model;

[0017] Figure 3 is a structural schematic diagram of the maintenance device of the grounding knife switch protection device for high-voltage switchgear proposed by the present utility model;

[0018] Figure 4 is the Figure 3 magnified structural schematic diagram at A of the grounding knife switch protection device for high-voltage switchgear proposed by the present utility model;

[0019] Figure 5 is a structural schematic diagram of the spring-back component of the grounding knife switch protection device for high-voltage switchgear proposed by the present utility model.

[0020] Legend: 1, base; 2, brake body; 3, maintenance device; 31, support plate; 32, rod body; 33, baffle; 34, sliding rail; 35, sliding sleeve; 36, lead screw; 37, knob; 4, spring-back component; 41, bracket; 42, pushing plate; 43, pressing plate; 44, arc-shaped rod; 45, pressure spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Please refer to Figures 1-5, the present utility model provides a technical solution: a grounding knife protection device for a high-voltage switch cabinet, which includes a base 1 and a maintenance device 3. A knife body 2 is installed on the surface of the base 1, and the maintenance device 3 is arranged on the surface of the base 1.

[0022] In this embodiment: The maintenance device 3 includes a slide rail 34, the slide rail 34 is fixedly connected to the base 1, one side of the knife body 2 is fixedly connected with a sliding sleeve 35, the sliding sleeve 35 is slidably connected to the slide rail 34, a first hole is opened on the lower surface of the sliding sleeve 35, a support plate 31 is fixedly connected to the lower surface of the slide rail 34, a rod body 32 is fixedly connected to the surface of the support plate 31, and the rod body 32 is inserted into the first hole on the lower surface of the sliding sleeve 35. A baffle 33 is fixedly connected to the lower surface of the knife body 2. By setting the maintenance device 3, it is convenient to quickly disassemble and install the knife body 2, reducing the installation steps of the knife body 2, facilitating the reduction of potential safety hazards during equipment maintenance, increasing the stability and safety of the equipment, improving the working efficiency of the equipment, and facilitating maintenance.

[0023] Specifically, a second hole is opened on the surface of the baffle 33, a threaded hole is opened on the lower surface of the support plate 31, and a lead screw 36 is threadedly connected to the lower surface of the support plate 31. By setting the lead screw 36, it is convenient to position the knife body 2, increasing the usability of the equipment and reducing the operation difficulty of the equipment.

[0024] Specifically, the lead screw 36 is inserted into the second hole on the surface of the baffle 33, and a knob 37 is fixedly connected to one side of the lead screw 36. By setting the knob 37, during use, the knob 37 is convenient to drive the lead screw 36 to rotate, assisting the lead screw 36 to position the knife body 2, increasing the usability of the equipment.

[0025] Specifically, there are two rod bodies 32, and the two rod bodies 32 are arranged in mirror symmetry. By setting the rod bodies 32, during use, the rod bodies 32 are convenient to fix the knife body 2, increasing the usability of the equipment, reducing the operation difficulty of the equipment, and facilitating use.

[0026] Specifically, a spring-back assembly 4 is arranged on the lower surface of the knife body 2. The spring-back assembly 4 includes a push plate 42, the push plate 42 is fixedly connected to the knife body 2, a support 41 is fixedly connected to the surface of the base 1, a third hole is opened on the surface of the support 41, and an arc-shaped rod 44 is slidably connected to the inner wall of the third hole on the surface of the support 41.

[0027] In this embodiment: By setting the spring-back assembly 4, it is convenient to assist in disassembling the knife body 2 and push the knife body 2 to slide, increasing the usability of the equipment and reducing the operation difficulty of the equipment.

[0028] Specifically, a pressing plate 43 is fixedly connected to the surface of the arc-shaped rod 44, and the arc-shaped rod 44 is arranged in a "U" shape.

[0029] In this embodiment: By providing the arc-shaped rod 44, it is convenient to drive the pressing plate 43 to slide, which increases the usability of the device, reduces the operation difficulty of the device, and facilitates use.

[0030] Specifically, a compression spring 45 is fixedly connected to the surface of the arc-shaped rod 44. One side of the compression spring 45 away from the arc-shaped rod 44 is fixedly connected to the bracket 41. The surface of the arc-shaped rod 44 penetrates through the bracket 41 and is fixedly connected to the pressing plate 43.

[0031] In this embodiment: By providing the compression spring 45, during use, the compression spring 45 generates elastic force to squeeze the pressing plate 43, assisting the pressing plate 43 to move, which improves the usability of the device.

[0032] Working principle: By providing the maintenance device 3 and the resilience assembly 4, during use, the sliding sleeve 35 is sleeved on the slide rail 34. At this time, the rod body 32 is inserted into the sliding sleeve 35. At the same time, the push plate 42 abuts against the pressing plate 43, and the pressing plate 43 slides upward under force. When the baffle 33 reaches the lead screw 36, rotate the knob 37 to drive the lead screw 36 to insert into the baffle 33 to complete positioning. The brake body 2 is installed through the lead screw 36. Rotate the knob 37 in the reverse direction, and the knob 37 drives the lead screw 36 away from the baffle 33, then the brake body 2 can be lifted upward to remove the brake body 2. By providing the present utility model, it is convenient to quickly disassemble and install the brake body 2, reduces the installation steps of the brake body 2, facilitates reducing the potential safety hazards generated during equipment maintenance, increases the stability and safety of the equipment, improves the working efficiency of the equipment, and facilitates maintenance.

Claims

1. A high-voltage switch cabinet grounding knife switch protection device, comprising a base (1) and a maintenance device (3), characterized in that: A gate body (2) is mounted on the surface of the base (1); the maintenance device (3) is arranged on the surface of the base (1); the maintenance device (3) comprises a slide rail (34); the slide rail (34) is fixedly connected to the base (1); a sliding sleeve (35) is fixedly connected to one side of the gate body (2); the sliding sleeve (35) is slidably connected to the slide rail (34); a hole (1) is formed on the lower surface of the sliding sleeve (35); a support plate (31) is fixedly connected to the lower surface of the slide rail (34); a rod body (32) is fixedly connected to the surface of the support plate (31); the rod body (32) is inserted into the hole (1) on the lower surface of the sliding sleeve (35); and a baffle (33) is fixedly connected to the lower surface of the gate body (2).

2. The high-voltage switch cabinet grounding knife switch protection device according to claim 1 is characterized in that: A second hole is provided on the surface of the baffle (33), a threaded hole is provided on the lower surface of the support plate (31), and a screw rod (36) is threadedly connected to the lower surface of the support plate (31).

3. The high-voltage switch cabinet grounding knife switch protection device according to claim 2 is characterized in that: The screw rod (36) is inserted into the second hole on the surface of the baffle plate (33), and a knob (37) is fixedly connected to one side of the screw rod (36).

4. The high-voltage switch cabinet grounding switch protection device according to claim 1 is characterized in that: There are two rod bodies (32), and the two rod bodies (32) are arranged in a mirror-symmetrical manner.

5. The high voltage switch cabinet grounding knife switch protection device according to claim 1 is characterized in that: A rebound assembly (4) is provided on the lower surface of the gate body (2), the rebound assembly (4) comprising a push plate (42), the push plate (42) being fixedly connected to the gate body (2), a bracket (41) being fixedly connected to the surface of the base (1), a third hole being provided on the surface of the bracket (41), and an arc-shaped rod (44) being slidably connected to the inner wall of the third hole on the surface of the bracket (41).

6. The high-voltage switch cabinet grounding knife switch protection device according to claim 5 is characterized in that: A pressure plate (43) is fixedly connected to the surface of the arc-shaped rod (44), and the arc-shaped rod (44) is arranged in a "U" shape.

7. The high voltage switch cabinet grounding knife switch protection device according to claim 5 is characterized in that: A pressure spring (45) is fixedly connected to the surface of the arc-shaped rod (44); a side of the pressure spring (45) away from the arc-shaped rod (44) is fixedly connected to the bracket (41); and a surface of the arc-shaped rod (44) passes through the bracket (41) and is fixedly connected to a pressure plate (43).

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