Indoor high-voltage grounding switch

Abstract

This utility model discloses an indoor high-voltage grounding switch, including a base. A reset mechanism is symmetrically arranged on one side of the base. A flipping rod is also inserted into and rotatably mounted on one side of the base, and the flipping rod is connected to the reset mechanism via a connecting plate. Several flipping frames are arranged on the flipping rod, and several insulating heads corresponding to the flipping frames are arranged on the base. A stationary contact is mounted on the insulating head via a mounting block. Each flipping frame includes a pair of plates symmetrically arranged on the flipping rod. Through the cooperation of the top rod and the contact block, the traditional arc-shaped sliding contact is changed to a two-sided clamping contact. The advantage of this design is that the contact is instantaneous clamping rather than sliding friction, which reduces contact wear. The clamping contact pressure is uniform, and the protrusion of the stationary contact improves contact reliability. Furthermore, the guiding surface, the buffering of the reset spring, and the elastic absorption of the friction-increasing plate all contribute to reducing rigid collisions and improving the durability of the device.

Description

Technical Field

[0001] This utility model relates to the field of grounding switch technology, specifically an indoor high-voltage grounding switch. Background Technology

[0002] A grounding switch is a mechanical grounding device that releases static electricity from the equipment and circuit under maintenance, thereby ensuring the safety of maintenance personnel during power outages. To facilitate operation, existing grounding switches have gradually been upgraded from manual control to electric control. For electrically controlled grounding switches, it is often necessary to ensure that the controller and other components can maintain normal operation, so as to achieve smooth control of closing and opening the grounding switch.

[0003] A search revealed a patent with publication number CN222690572U, which discloses an indoor high-voltage grounding switch. The switch includes a base with multiple mounting brackets fixedly connected to its front end face. A connecting bracket is rotatably connected within each mounting bracket. Several irregularly shaped holes are formed on the connecting brackets, and moving contacts are fixedly connected to these holes via bolts. An adjustment hole is formed above the surface of the moving contact, and an adjustment device is installed within the adjustment hole. This adjustment device allows for adjustment of the clamping force between the first and second contact pieces, ensuring better contact between the moving and stationary contacts. Furthermore, to increase the contact capability between them, a contact block is provided. This contact block ensures contact with the bottom of the stationary contact, further enhancing the contact capability between the moving and stationary contacts and extending the service life of the high-voltage grounding switch.

[0004] In the aforementioned prior art, the moving contact of the device needs to be rotated by the connecting frame to achieve a flipping action, forming an arc-shaped contact path. During the contact process, the moving contact and the stationary contact are not directly attached to each other, but the contact surface of the moving contact slides in an arc along the outer surface of the stationary contact. A continuous and large sliding friction force is generated between the two. During the sliding process, the relative sliding distance of the contact surface of the moving contact is long. In high-voltage scenarios, in order to ensure contact reliability, a certain clamping force needs to be maintained between the contacts, which further increases the friction intensity. After long-term use, obvious scratches, dents, and even material wear will appear on the contact surface of the moving contact and the stationary contact, resulting in a reduction in the contact thickness. Frequent replacement is required, which increases the equipment maintenance cost and maintenance downtime. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] In view of the problems existing in the above and / or existing indoor high-voltage grounding switches, this utility model is proposed.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0008] An indoor high-voltage grounding switch includes a base. A reset mechanism is symmetrically arranged on one side of the base. A flipping rod is also inserted into and rotatably mounted on one side of the base, and the flipping rod is connected to the reset mechanism through a connecting plate. A plurality of flipping frames are arranged on the flipping rod. A plurality of insulating heads corresponding to the flipping frames are arranged on the base. A stationary contact is arranged on the insulating head through a mounting block. The flipping frame includes a pair of plates symmetrically arranged on the flipping rod. A moving contact is inserted into and slidably mounted on the adjacent side of the pair of plates through a pair of insert rods. A top rod is symmetrically arranged under the bottom surface of the mounting block. A contact block is arranged on one side of the moving contact through the mounting plate.

[0009] As a preferred embodiment of the indoor high-voltage grounding switch described in this utility model, both sides of the stationary contact are provided with protrusions.

[0010] As a preferred embodiment of the indoor high-voltage grounding switch described in this utility model, a guide surface is provided on one side of the contact block, and the guide surface is configured as an inclined structure.

[0011] As a preferred embodiment of the indoor high-voltage grounding switch described in this utility model, the outer wall of the top rod is configured as an arc surface.

[0012] As a preferred embodiment of the indoor high-voltage grounding switch described in this utility model, the outer wall of the contact block is further provided with a friction-enhancing plate that conforms to the guide surface.

[0013] In a preferred embodiment of the indoor high-voltage grounding switch described in this utility model, the friction-enhancing plate is configured as an elastic structure.

[0014] As a preferred embodiment of the indoor high-voltage grounding switch described in this utility model, a positioning plate is provided on the other side of the plate body, and the insertion rod is inserted into the positioning plate and slidably installed.

[0015] As a preferred embodiment of the indoor high-voltage grounding switch described in this utility model, a reset spring is sleeved on the outside of the plug rod, and the other end of the reset spring is disposed on the plate body.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] By combining the push rod and the contact block, the traditional arc-shaped sliding contact is changed to a two-sided clamping contact. The advantage of this design is that the contact is instantaneous clamping rather than sliding friction, which can reduce contact wear. The clamping contact pressure is uniform, and the raised part of the stationary contact improves the contact reliability. Furthermore, the guiding surface, the buffering of the return spring, and the elastic absorption of the friction plate can all reduce rigid collisions and improve the durability of the device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is a schematic diagram of the overall structure of an indoor high-voltage grounding switch according to the present invention;

[0020] Figure 2 This is a schematic diagram of the contact frame structure of an indoor high-voltage grounding switch according to the present invention;

[0021] Figure 3 for Figure 2 Enlarged view of the middle section structure;

[0022] Figure 4 This is a schematic diagram of the guide surface and top rod cooperation structure of an indoor high-voltage grounding switch according to this utility model.

[0023] In the diagram: 1. Base; 2. Insulating head; 3. Reset mechanism; 4. Flipping rod; 5. Mounting block; 6. Flipping frame; 7. Plate body; 8. Moving contact; 9. Positioning plate; 10. Mounting plate; 11. Contact block; 12. Top rod; 13. Return spring; 14. Insert rod; 15. Guide surface; 16. Friction-enhancing plate; 17. Stationary contact. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] Please see Figures 1-4 This utility model provides a technical solution: an indoor high-voltage grounding switch, including a base 1. A reset mechanism 3 is symmetrically arranged on one side of the base 1. The reset mechanism 3 is used to drive a flip rod 4 back to its initial position after tripping, ensuring structural stability. A flip rod 4 is also inserted and rotatably mounted on the same side of the base 1. The flip rod 4 can rotate freely around its insertion axis, and the flip rod 4 is connected to the reset mechanism 3 via a connecting plate (not labeled in the figure). Both ends of the connecting plate are fixed to the rod body of the flip rod 4 and the movable end of the reset mechanism 3, respectively, to transmit the force of the reset mechanism 3. Several flipping frames 6 are spaced apart along the length of the base. The flipping frames 6 rotate synchronously with the rotation of the flipping rod 4, so as to move the contacts closer and further away. Several insulating heads 2 are set on the base 1 at the positions corresponding to the flipping frames 6. The insulating heads 2 correspond one-to-one with the flipping frames 6 and are used to achieve the insulated installation of the stationary contact 17. The stationary contact 17 is fixedly installed on the insulating head 2 by the mounting block 5. The mounting block 5 and the insulating head 2 are detachably connected, which facilitates the inspection and replacement of the stationary contact 17. The stationary contact 17 has protrusions integrally formed on both sides. The protrusions are used to increase the contact area with the moving contact 8 and improve the conductivity stability.

[0028] The flipping frame 6 includes a pair of plates 7 symmetrically fixed on the flipping rod 4. The pair of plates 7 are arranged in parallel relative to each other. Each of the plates 7 has a sliding hole on its adjacent side that matches the insertion rod 14. The insertion rod 14 passes through the sliding hole and is fixedly connected to the moving contact 8, so that the moving contact 8 is inserted through the insertion rod 14 and slidably installed between the pair of plates 7. The moving contact 8 can move back and forth along the axis of the insertion rod 14. A positioning plate 9 is fixedly provided on the other side of the plate 7 (the side away from the moving contact 8). The positioning plate 9 has a... There is a guide hole that matches the plug rod 14. The end of the plug rod 14 away from the moving contact 8 is inserted into the guide hole of the positioning plate 9 and slidably installed. The positioning plate 9 is used to limit the sliding direction of the plug rod 14 and prevent the moving contact 8 from deviating. A reset spring 13 is sleeved on the outside of the plug rod 14. One end of the reset spring 13 abuts against the end face of the plate body 7 on the side close to the plate body 7, and the other end abuts against the side of the moving contact 8 facing the plate body 7. The reset spring 13 is always in a pre-compression state and is used to provide reset force when the circuit is opened, pulling the moving contact 8 away from the stationary contact 17.

[0029] A mounting plate 10 is fixedly connected to the side of the moving contact 8 away from the insertion rod 14. The mounting plate 10 is arranged perpendicularly to the moving contact 8. A contact block 11 is fixedly provided on the side of the mounting plate 10 away from the moving contact 8. The position of the contact block 11 corresponds to the top rod 12 on the bottom surface of the mounting block 5. A guide surface 15 is provided on one side of the contact block 11, and the guide surface 15 is set as an inclined structure. The inclination angle of the guide surface 15 is adapted to the arc surface structure of the top rod 12, which is used to guide the top rod 12 to slide and convert it into thrust. A friction-enhancing plate 16 is also attached and fixed to the outer wall of the contact block 11. The friction-enhancing plate 16 is set as an elastic structure. The surface of the friction-enhancing plate 16 is completely attached to the guide surface 15. On the one hand, it can increase the contact friction between the contact block 11 and the top rod 12 to avoid sliding jamming. On the other hand, it can buffer the impact force when the two come into contact and reduce structural damage.

[0030] A top rod 12 is symmetrically arranged on the bottom surface of the mounting block 5. The top rod 12 is perpendicular to the bottom surface of the mounting block 5, and the distribution position of the top rod 12 corresponds to the movement path of the contact block 11, ensuring that the contact block 11 can accurately reach the top rod 12 when the rotating frame 6 is rotated. The outer wall of the top rod 12 is set as an arc surface structure, which can reduce the frictional resistance when in contact with the guide surface 15, making the sliding smoother.

[0031] The core improvement of this embodiment lies in changing the traditional arc-shaped sliding contact to a two-sided clamping contact through the cooperation of the push rod 12 and the contact block 11. Since the contact block 11 is indirectly mounted on the plate body 7 through the insertion rod 14 and the return spring 13, the contact block 11, the mounting plate 10, and the moving contact 8 can move along the axis of the insertion rod 14. When the plate body 7 is flipped close to the stationary contact 17 with the flipping frame 6, the contact block 11 preferentially contacts the push rod 12. The inclined structure of the guide surface 15 cooperates with the arc surface of the push rod 12. As the flipping angle increases, the push rod 12 slides along the guide surface 15 and pushes the contact block 11 towards the plate body 7. As the stationary contact 17 moves, the thrust causes the mounting plate 10 and the moving contact 8 to slide synchronously, compressing the return spring 13 until the flipping frame 6 reaches the set position. The moving contacts 8 on both sides then clamp the stationary contact 17, achieving tight contact. The advantage of this design is that the contact is an instantaneous clamping rather than sliding friction, which can reduce contact wear. The clamping contact pressure is uniform, and the protrusion of the stationary contact 17 improves the reliability of the contact. Furthermore, the guiding surface 15, the buffering of the return spring 13, and the elastic absorption of the friction plate 16 all work together to reduce rigid collisions and improve the durability of the device.

[0032] During use, the flipping rod 4 remains in its initial rotational position under the force of the reset mechanism 3. The flipping frame 6 is in a state away from the insulating head 2 along with the flipping rod 4. The reset spring 13 is not compressed, the moving contact 8 and the stationary contact 17 are kept apart and have no conductive contact, the top rod 12 and the contact block 11 have no contact, and all components are in a stress-free state. An external drive mechanism (not shown in the figure) drives the flipping rod 4 to rotate around its insertion axis on the base 1. The flipping rod 4 is connected to the flipping frame 6 through the rod body, which drives several flipping frames 6 to flip synchronously towards the insulating head 2. As the flipping frame 6 rotates, the plate body 7 drives the moving contact 8, the mounting plate 10, and the contact block 11 to gradually approach the top rod 12. When it is flipped to a set angle, the guide surface 15 of the contact block 11 contacts the outer arc surface of the top rod 12. The continuous rotation of the flipping frame 6 causes the top rod 12 to generate a reaction force on the guide surface 15. This force is decomposed along the inclined direction of the guide surface 15 into a force towards the stationary contact 17. Under the thrust of the 7, the contact block 11 drives the mounting plate 10 and the moving contact 8 to slide along the insertion rod 14 toward the stationary contact 17. The insertion rod 14 moves synchronously along the guide hole of the positioning plate 9. At the same time, the reset spring 13 is compressed and stores elastic potential energy. As the flipping rod 4 continues to rotate, the top rod 12 slides along the guide surface 15 to the limit position. The moving contacts 8 on both sides are completely in contact with the two side walls of the stationary contact 17. Stable conductive contact is achieved through clamping and fixing. The closing operation is completed. During this process, the friction plate 16 buffers the impact and avoids jamming by elastically contacting the contact part, ensuring stable clamping.

[0033] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An indoor high-voltage grounding switch, characterized in that, The system includes a base (1), a reset mechanism (3) is symmetrically arranged on one side of the base (1), a flipping rod (4) is inserted and rotatably installed on one side of the base (1), and the flipping rod (4) is connected to the reset mechanism (3) through a connecting plate. Several flipping frames (6) are provided on the flipping rod (4), and several insulating heads (2) corresponding to the flipping frames (6) are provided on the base (1). A stationary contact (17) is provided on the insulating head (2) through a mounting block (5). The flipping frame (6) includes a pair of plates (7) symmetrically arranged on the flipping rod (4). A moving contact (8) is inserted and slidably installed on one side of the pair of plates (7) through a pair of insert rods (14). A top rod (12) is symmetrically arranged under the bottom surface of the mounting block (5). A contact block (11) is provided on one side of the moving contact (8) through a mounting plate (10).

2. The indoor high-voltage grounding switch according to claim 1, characterized in that, The stationary contact (17) has protrusions on both sides.

3. The indoor high-voltage grounding switch according to claim 1, characterized in that, The contact block (11) has a guide surface (15) on one side, and the guide surface (15) is set as an inclined structure.

4. The indoor high-voltage grounding switch according to claim 1, characterized in that, The outer wall of the top rod (12) is configured as an arc surface.

5. The indoor high-voltage grounding switch according to claim 1, characterized in that, The outer wall of the contact block (11) is also provided with a friction-enhancing plate (16) that conforms to the guide surface (15).

6. The indoor high-voltage grounding switch according to claim 5, characterized in that, The friction-enhancing sheet (16) is configured as an elastic structure.

7. The indoor high-voltage grounding switch according to claim 1, characterized in that, A positioning plate (9) is provided on the other side of the plate body (7), and the insertion rod (14) is inserted into the positioning plate (9) and slidably installed.

8. The indoor high-voltage grounding switch according to claim 1, characterized in that, The insertion rod (14) is fitted with a reset spring (13), and the other end of the reset spring (13) is set on the plate body (7).

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