A mechanical device for improving the contact reliability of the hard pressure plate of a relay protection cabinet.

Abstract

This utility model provides a mechanical device for improving the contact reliability of the hard pressure plate of a relay protection cabinet. It relates to the field of power system protection technology. The mechanical device for improving the contact reliability of the hard pressure plate of a relay protection cabinet includes a base, on which two fixing members are fixedly installed. A spring is rotatably installed on each of the corresponding fixing members. Two connecting blocks are fixedly installed on the base, and a common mounting shell is fixedly installed on both connecting blocks. A movable hole is provided on one side of the mounting shell. A circular rod is fixedly installed on the top inner wall of the mounting shell. A common partition plate is fixedly installed between the two inner walls of the mounting shell. The bottom end of the circular rod is fixedly connected to the top of the partition plate. A fitting block is rotatably sleeved on the circular rod. This utility model has the advantages of increasing the reliability of the contact between the spring and the metal contact surface, ensuring the stability of the spring installation, and reducing the influence of the external environment on the spring.

Description

Technical Field

[0001] This utility model relates to the field of power system protection technology, specifically a mechanical device for improving the contact reliability of the hard pressure plate of a relay protection cabinet. Background Technology

[0002] Relay protection cabinets are key equipment in power distribution systems used to ensure power distribution, control, monitoring, and protection. They house a large number of secondary devices and ensure the safe, stable, and efficient operation of the entire power distribution system through information collection, processing, and control of primary power distribution equipment. Relay protection cabinets are widely used in substations of urban power distribution networks and dedicated power distribution stations of industrial enterprises. Their importance lies in their ability to quickly isolate faults, ensure the safety of power equipment, reduce the scope and duration of power outages, and improve power supply reliability. They play an indispensable role in ensuring the stable operation of the power system. The hard plate is an important device in the protection cabinet used for relay protection. It consists of connecting pieces, fixing parts, and other components, and is installed on the surface of the protection cabinet. The protection function is activated or deactivated by manual switching, realizing the conduction or disconnection of the electrical circuit.

[0003] Traditionally, under mechanical vibration, the fastening structure connecting the connecting pieces on the hard plate is prone to loosening, which can cause pressure attenuation in the connecting pieces. This can affect the contact between the connecting pieces and the metal contact surface on the hard plate, potentially leading to abnormal conduction or interruption of the protection circuit.

[0004] Therefore, it is necessary to provide a new mechanical device to improve the contact reliability of the hard pressure plate of the relay protection cabinet and solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a mechanical device that improves the contact reliability of the hard plate of the relay protection cabinet by increasing the reliability of the contact between the spring and the metal contact surface, ensuring the stability of the spring installation, and reducing the influence of the external environment on the spring.

[0006] To solve the above-mentioned technical problems, the mechanical device provided by this utility model for improving the contact reliability of the hard pressure plate of the relay protection cabinet includes: a base, on which two fixing parts are fixedly installed, and spring pieces are rotatably installed on the corresponding fixing parts; two connecting blocks are fixedly installed on the base, and the same mounting shell is fixedly installed on the two connecting blocks; a movable hole is opened on one side of the mounting shell; a circular rod is fixedly installed on the top inner wall of the mounting shell; the same partition plate is fixedly installed between the two inner walls of the mounting shell; the bottom end of the circular rod is fixedly connected to the top of the partition plate; a fitting block is rotatably sleeved on the circular rod; annular blocks are fixedly installed at both ends of the fitting block; and two annular blocks are rotatably sleeved on the circular rod. Above, two torsion springs are sleeved on the circular rod, a connecting plate is fixedly installed on the sleeve block, a fixing frame is fixedly installed on one side of the connecting plate, a pressing roller is rotatably installed on the fixing frame, two docking rods are fixedly installed between the inner walls of the two sides of the mounting shell, the same sliding plate is slidably installed on the two docking rods, and springs are sleeved on both docking rods, a rectangular hole is opened on one side of the mounting shell, a connecting plate is fixedly installed on one side of the sliding plate, the connecting plate is slidably installed in the rectangular hole, a snap-fit ​​block is fixedly installed on one side of the connecting plate, two connecting blocks are fixedly installed on one side of the spring piece, and the same arc-shaped block is fixedly installed on the side of the two connecting blocks away from the spring piece, and a limit groove is opened on the arc-shaped block.

[0007] Preferably, a shock-absorbing plate is fixedly sleeved on the connecting plate, and a rubber pad is fixedly installed on one side of the shock-absorbing plate.

[0008] Preferably, two buffer pads are fixedly installed on one side of the sliding plate, and a pull ring is fixedly installed on one side of the connecting plate.

[0009] Preferably, the base is threaded with two bolts, and the two bolts are slidably connected to the two connecting blocks respectively.

[0010] Preferably, two rolling beads are embedded on one side of the locking block, and both rolling beads are slidably connected to the arc-shaped block.

[0011] Preferably, the same support rod is fixedly installed between the inner walls of both sides of the fixing frame, and the pressing roller is rotatably sleeved on the support rod.

[0012] Compared with related technologies, the mechanical device for improving the contact reliability of the hard pressure plate of the relay protection cabinet provided by this utility model has the following beneficial effects:

[0013] In this invention, the pressing roller drives two torsion springs to deform via the sleeve block. The two torsion springs continuously apply pressure to the spring sheet with the help of the pressing roller for elastic compensation, enhancing the fit between the spring sheet and the metal contact surface on the hard plate, reducing the possibility of the spring sheet loosening, and increasing the reliability between the spring sheet and the metal contact surface. The locking block is kept in contact with the arc-shaped block under the influence of the elastic force of the two springs. When the spring sheet rotates to connect the circuit, as the spring sheet rotates to the position, the locking block can be locked into the limiting groove in time, creating a self-locking effect on the spring sheet, ensuring the stability of the spring sheet position, and making the connection of the hard plate circuit more stable. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present utility model;

[0015] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the right-side structure of this utility model;

[0017] Figure 4 This is a frontal sectional view of the present invention.

[0018] In the diagram: 1. Base; 2. Fixing component; 3. Spring; 4. Connecting block; 5. Mounting shell; 6. Movable hole; 7. Circular rod; 8. Fitting block; 9. Annular block; 10. Torsion spring; 11. Connecting plate; 12. Fixing frame; 13. Pressing roller; 14. Divider plate; 15. Connecting rod; 16. Sliding plate; 17. Spring; 18. Rectangular hole; 19. Connecting plate; 20. Snap-in block; 21. Connecting block; 22. Arc-shaped block; 23. Limiting groove. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please refer to the following: Figures 1-4 ,in, Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a schematic diagram of the left-side structure of this utility model; Figure 3 This is a schematic diagram of the right-side structure of this utility model; Figure 4This is a frontal sectional view of the present invention. The mechanical device for improving the contact reliability of the hard pressure plate of the relay protection cabinet includes: a base 1, on which two fixing parts 2 are fixedly installed, and spring pieces 3 are rotatably installed on the corresponding fixing parts 2. Two bolts are threaded on the base 1, and two connecting blocks 4 are fixedly installed on the base 1 by the two bolts. The same mounting shell 5 is fixedly installed on the two connecting blocks 4. A movable hole 6 is opened on one side of the mounting shell 5. A circular rod 7 is fixedly installed on the top inner wall of the mounting shell 5. The same partition plate 14 is fixedly installed between the inner walls of the two sides of the mounting shell 5. The bottom end of the circular rod 7 is fixedly connected to the top of the partition plate 14. A fitting block 8 is rotatably sleeved on the circular rod 7. Both ends of the fitting block 8 are fixedly installed with annular blocks 9. Both annular blocks 9 are rotatably sleeved on the circular rod 7. Two torsion springs 10 are sleeved on the circular rod 7. The two ends of the two torsion springs 10 are fixedly connected to the two annular blocks 9, the top inner wall of the mounting shell 5, and the partition plate 14, respectively. A connecting plate 11 is fixedly installed on the fitting block 8. The connecting plate 11 is L-shaped and is slidably installed in the movable hole 6. A fixing frame 12 is fixedly installed on one side of the connecting plate 11. A support rod is fixedly installed between the inner walls of both sides of the fixing frame 12. A pressing roller 13 is rotatably installed on the support rod on the fixing frame 12. Two connecting rods 15 are fixedly installed between the inner walls of both sides of the mounting shell 5. A sliding plate 16 is slidably installed on the two connecting rods 15. A spring 17 is sleeved on each of the two connecting rods 15. The two ends of the two springs 17 are in contact with the sliding plate 16 and one side of the mounting shell 5, respectively. A rectangular opening is provided on one side of the mounting shell 5. A connecting plate 19 is fixedly installed on one side of the sliding plate 16 in the hole 18. The connecting plate 19 is slidably installed in the rectangular hole 18. The connecting plate 19 is also L-shaped. A snap-in block 20 is fixedly installed on one side of the connecting plate 19. The side of the snap-in block 20 near the arc-shaped block 22 mentioned below is an arc-shaped surface. Two connecting blocks 21 are fixedly installed on one side of the spring piece 3. The same arc-shaped block 22 is fixedly installed on the side of the two connecting blocks 21 away from the spring piece 3. A limiting groove 23 is opened on the arc-shaped block 22. The limiting groove 23 is adapted to the snap-in block 20.

[0021] To reduce impact and wear during contact between components, a damping plate is fixedly fitted on the connecting plate 19, a rubber pad is fixedly installed on one side of the damping plate, two buffer pads are fixedly installed on one side of the sliding plate 16, and a pull ring is fixedly installed on one side of the connecting plate 19.

[0022] In order to ensure contact between the locking block 20 and the arc-shaped block 22 and reduce wear between them, in this method, two rolling balls are embedded on one side of the locking block 20, and both rolling balls are slidably connected to the arc-shaped block 22.

[0023] The working principle of the mechanical device for improving the contact reliability of the hard pressure plate of the relay protection cabinet provided by this utility model is as follows:

[0024] In the initial state, the locking block 20 and the arc-shaped block 22 maintain sliding contact, the two springs 17 are in a compressed state, and the hard pressure plate is in a disconnected state. When it is necessary to connect the circuit of the hard pressure plate, rotate the spring piece 3 clockwise. The open end of the spring piece 3 gradually moves upward. During the rotation, the insulating material on the spring piece 3 gradually comes into contact with the pressing roller 13 and generates a pushing force on the pressing roller 13, lifting the pressing roller 13. The pressing roller 13 will drive the mounting block 8 to rotate on the circular rod 7, causing the two torsion springs 10 to deform. The pressing roller 13 generates downward pressure on the spring piece 3 under the action of the elastic force of the two torsion springs 10. The spring piece 3 is elastically compensated by the pressing roller 13, which increases the adhesion between the spring piece 3 and the metal contact surface on the hard pressure plate.

[0025] During the movement of the spring piece 3, the arc block 22 rotates together with it through the two connecting blocks 21. During the movement, the limiting groove 23 on the arc block 22 gradually moves towards the direction of the locking block 20 until the limiting groove 23 is aligned with the locking block 20. Under the influence of the elastic force of the two springs 17, the locking block 20 will immediately lock into the limiting groove 23. The two springs 17 are freed from external force and can be stretched out. Under the restriction of the arc block 22, the spring piece 3 completes self-locking after the connection is completed, preventing the spring piece 3 from loosening due to external reasons and ensuring the stability of the connection.

[0026] Compared with related technologies, the mechanical device for improving the contact reliability of the hard pressure plate of the relay protection cabinet provided by this utility model has the following beneficial effects:

[0027] In this invention, the pressing roller 13 drives the two torsion springs 10 to deform through the sleeve block 8. The two torsion springs 10 continuously apply pressure to the spring piece 3 with the help of the pressing roller 13 to perform elastic compensation, enhance the fit between the spring piece 3 and the metal contact surface on the hard plate, reduce the possibility of the spring piece 3 becoming loose, and increase the reliability between the spring piece 3 and the metal contact surface. The locking block 20 is always in contact with the arc block 22 due to the elastic force of the two springs 17. When the spring piece 3 is rotating to connect the circuit, as the spring piece 3 rotates into place, the locking block 20 can be locked into the limiting groove 23 in time, generating self-locking for the spring piece 3, ensuring the stability of the position of the spring piece 3, and making the connection of the hard plate circuit more stable.

[0028] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, those skilled in the art who understand the principle of the above utility model can clearly understand the specific details of its power mechanism, power supply system and control system.

[0029] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A mechanical device for improving the contact reliability of a hard pressboard of a relay protection screen cabinet, comprising a base, two fixed members are fixedly installed on the base, and an elastic sheet is rotatably installed on the corresponding fixed member, characterized in that, Two connecting blocks are fixedly installed on the base, and the same mounting shell is fixedly installed on the two connecting blocks. A movable hole is provided on one side of the mounting shell. A circular rod is fixedly installed on the top inner wall of the mounting shell. A partition plate is fixedly installed between the two inner walls of the mounting shell. The bottom end of the circular rod is fixedly connected to the top of the partition plate. A fitting block is rotatably sleeved on the circular rod. Both ends of the fitting block are fixedly installed with annular blocks. Two annular blocks are rotatably sleeved on the circular rod. Two torsion springs are sleeved on the circular rod. A connecting plate is fixedly installed on the fitting block. One side of the connecting plate... A fixed frame is fixedly installed, and a pressing roller is rotatably mounted on the fixed frame. Two connecting rods are fixedly installed between the inner walls of the two sides of the mounting shell. The same sliding plate is slidably installed on the two connecting rods. A spring is sleeved on each of the two connecting rods. A rectangular hole is opened on one side of the mounting shell. A connecting plate is fixedly installed on one side of the sliding plate. The connecting plate is slidably installed in the rectangular hole. A locking block is fixedly installed on one side of the connecting plate. Two connecting blocks are fixedly installed on one side of the spring piece. The same arc-shaped block is fixedly installed on the side of the two connecting blocks away from the spring piece. A limit groove is opened on the arc-shaped block.

2. The mechanical device for improving the contact reliability of the hardboard of the relay protection screen cabinet according to claim 1, characterized in that, A shock-absorbing plate is fixedly fitted onto the connecting plate, and a rubber pad is fixedly installed on one side of the shock-absorbing plate.

3. The mechanical device for improving the contact reliability of hardboard of a relay protection screen cabinet according to claim 1, characterized in that, Two buffer pads are fixedly installed on one side of the sliding plate, and a pull ring is fixedly installed on one side of the connecting plate.

4. The mechanical device for improving the contact reliability of hardboard of a relay protection screen cabinet according to claim 1, characterized in that, Two bolts are threaded onto the base, and the two bolts are slidably connected to the two connecting blocks respectively.

5. The mechanical device for improving the contact reliability of hardboard of a relay protection screen cabinet according to claim 1, characterized in that, Two rolling beads are embedded on one side of the locking block, and both rolling beads are slidably connected to the arc-shaped block.

6. The mechanical device for improving the contact reliability of hardboard of a relay protection screen cabinet according to claim 1, characterized in that, The same support rod is fixedly installed between the inner walls of the two sides of the fixed frame, and the pressing roller is rotatably sleeved on the support rod.

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