A quick clamp for high voltage testing of power cables

Abstract

This utility model relates to the field of high-voltage power testing technology and discloses a quick clamp for high-voltage testing of power cables, including a clamp plate one and a clamp plate two. The clamp plate one and the clamp plate two are hinged by a pin. A rotating column is rotatably connected to an adjacent side of the clamp plate one and the clamp plate two. An elastic component for auxiliary cable clamping is installed on an adjacent side of the two rotating columns. Insert plates are installed on the upper and lower sides of the elastic component. An insert post that engages with the rotating column is fixedly connected to the rear side of the insert plate. An inclined column that engages with the rotating column is slidably connected to the inner wall of the insert plate. A clamping pad is fixedly connected to an adjacent side of the clamp plate one and the clamp plate two. A connecting wire passes through the inner wall of one of the clamping pads, and one end of the connecting wire is provided with a contact point. In this utility model, the squeezing column, the inclined column and the spring two cooperate. The clamping can be released by pulling out the stop block and pressing the squeezing column, realizing quick replacement of the spring one without disassembling the whole, shortening maintenance time and improving usage efficiency.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage power testing technology, and in particular to a quick clamp for high-voltage testing of power cables. Background Technology

[0002] High-voltage power testing technology is a key technology for ensuring the safe operation of power systems. By simulating a high-voltage environment, it tests the insulation performance and withstand voltage capacity of power equipment, and promptly identifies potential defects. It encompasses test scheme design, high-voltage equipment operation, and data acquisition and analysis, requiring a balance between testing accuracy and safety standards. It is an important quality control method before and during the operation and maintenance of power equipment.

[0003] The quick-release clamp for high-voltage power cable testing is a specialized tool for cable inspection in high-voltage power testing technology. Through optimized structural design, it achieves rapid and reliable cable fixation, ensuring a stable connection between the cable and testing equipment during testing. This improves testing efficiency and provides a fundamental guarantee for the safe and accurate conduct of high-voltage power testing, making it highly compatible with the needs of high-voltage power testing technology.

[0004] In existing technologies, the springs of some clamps are often fixed to the clamp body by integral welding, forming an inseparable whole structure. When the springs experience problems such as elasticity decay or fatigue damage due to long-term use, they cannot be easily disassembled and replaced. This design makes spring maintenance and replacement extremely inconvenient and time-consuming, failing to meet the requirements for rapid recovery of clamps in high-voltage testing. This increases equipment maintenance costs and results in low continuous use efficiency of the clamps due to the long replacement cycle, making it difficult to meet the needs of high-frequency, high-efficiency cable testing scenarios. Therefore, a quick clamp for high-voltage testing of power cables is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a quick clamp for high-voltage testing of power cables, aiming to improve the problems in the existing technology where some clamp springs are integrally welded to the main body and cannot be disassembled, cannot be easily replaced after the elastic force decays, have poor maintenance convenience, are time-consuming, increase costs and have low efficiency, and are difficult to meet the needs of high-frequency testing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A quick clamp for high-voltage testing of power cables includes a clamp plate one and a clamp plate two. The clamp plate one and the clamp plate two are hinged by a pin. A rotating post is rotatably connected to the adjacent side of the clamp plate one and the clamp plate two. An elastic component for auxiliary clamping of the cable is installed on the adjacent side of the two rotating posts. Insert plates are installed on the upper and lower sides of the elastic component. An insert post that engages with the rotating post is fixedly connected to the rear side of the insert plate. An inclined post that engages with the rotating post is slidably connected to the inner wall of the insert plate. As a further description of the above technical solution: Clamping pads are fixedly connected to the adjacent sides of clamping plate one and clamping plate two. A connecting wire passes through the inner wall of one of the clamping pads, and a contact point is provided at one end of the connecting wire. The outer side of the connecting wire passes through the inner wall of clamping plate one. As a further description of the above technical solution: The elastic component includes a support box detachably connected to one side of the rotating column, a spring is fixedly connected to the adjacent side of the two support boxes, and the adjacent side of the two insert plates is fixedly connected to the distant side of the two support boxes respectively. As a further description of the above technical solution: A limiting block that slides on the inner wall of the insert plate is fixedly connected to one side of the inclined column, and a spring is provided on the inner wall of the insert plate. As a further description of the above technical solution: One end of the second spring is fixedly connected to one side of the inner wall of the insert plate, and the other end of the second spring is fixedly connected to one side of the limiting block. As a further description of the above technical solution: The inner wall of the rotating column is slidably connected to an extrusion column, and one end of the extrusion column is in contact with the slope of the inclined column. As a further description of the above technical solution: The extrusion column is fixedly connected to two limiting strips on the outside, and the limiting strips are slidably connected to the inner wall of the rotating column on the outside. As a further description of the above technical solution: The front side of the rotating column is slidably connected to a stop that can be fully pulled out.

[0007] This utility model has the following beneficial effects: 1. In this utility model, the cooperative structure of the extrusion column, the inclined column, and the second spring breaks the limitation of the spring being fixed as a single unit to the main body of the clamp. The clamping can be released by pulling out the stop block and pressing the extrusion column, enabling quick replacement of the first spring without disassembling the entire unit or engaging in destructive operations. This effectively solves the problems of poor spring maintenance convenience and long maintenance time in existing technologies, shortening maintenance time, reducing costs, improving the continuous use efficiency of the clamp, and adapting to the high-frequency and high-efficiency testing requirements of high-pressure testing.

[0008] 2. In this utility model, the rubber stop block that is slidably connected to the front side of the rotating column can not only stabilize the inclined column through its own friction characteristics and prevent it from accidentally detaching from the rotating column during the clamping process, but also prevent the elastic component from falling off due to vibration or external impact. At the same time, the rubber material can reduce contact wear, extend the service life of the component, and enhance the safety and reliability of the clamp. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of a quick clamp for high-voltage testing of power cables proposed in this utility model; Figure 2 This is a schematic diagram of the wire connection structure of a quick clamp for high-voltage testing of power cables proposed in this utility model; Figure 3 This is a schematic diagram of the support box for a quick clamp for high-voltage testing of power cables proposed in this utility model; Figure 4 This is a schematic diagram of the extrusion column of a quick clamp for high-voltage testing of power cables proposed in this utility model; Figure 5 This is a schematic diagram of the inclined column structure of a quick clamp for high-voltage testing of power cables proposed in this utility model.

[0010] Legend: 1. Clamping plate one; 2. Clamping plate two; 3. Clamping pad; 4. Contact point; 5. Connecting wire; 6. Rotating column; 7. Support box; 8. Spring one; 9. Insert plate; 10. Inclined column; 11. Limiting block; 12. Spring two; 13. Extrusion column; 14. Limiting strip; 15. Stop block. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Reference Figures 1 to 5 This utility model provides an embodiment of a quick clamp for high-voltage testing of power cables, including a clamping plate 1 and a clamping plate 2, which together form the main clamping structure of the clamp. The clamping plate 1 and the clamping plate 2 are hinged by a pin to form a lever structure for easy operation and opening and closing. Clamping pads 3 are fixedly connected to adjacent sides of the clamping plate 1 and the clamping plate 2, which can closely fit the cable surface and avoid damaging the cable. A connecting wire 5 is passed through the inner wall of one of the clamping pads 3 for transmitting test signals, and one end of the connecting wire 5 is provided with a contact point 4, which can stably contact the cable test end. The outer side of the connecting wire 5 passes through the inner wall of the clamping plate 1 to fix the connecting wire 5. A rotating column 6 is rotatably connected to adjacent sides of the clamping plate 1 and the clamping plate 2, which provides an installation fulcrum for the elastic component and can rotate with the opening and closing of the clamping plate.

[0013] Elastic components for auxiliary cable clamping are installed on the adjacent sides of the two rotating columns 6. The elastic force enhances the clamping stability. The elastic components include a support box 7 detachably connected to one side of the rotating column 6 for installing and fixing a spring 8. The spring 8 is fixedly connected to the adjacent sides of the two support boxes 7 and is in a naturally tightened state to provide continuous clamping force. Insert plates 9 are installed on the upper and lower sides of the elastic components for connecting the support box 7 and the rotating column 6. The adjacent sides of the two insert plates 9 are respectively fixedly connected to the opposite sides of the two support boxes 7 to fix the insert plates 9 and the support boxes 7. The rear side of the insert plate 9 is fixedly connected to an insert post that snaps into the rotating column 6 to enhance the stability of the connection between the insert plate 9 and the rotating column 6. The inner wall of the insert plate 9 is slidably connected to an inclined column 10 that snaps into the rotating column 6. The snap-fit ​​connection enables the detachable connection between the insert plate 9 and the rotating column 6. A limiting block 11 that slides on the inner wall of the insert plate 9 is fixedly connected to one side of the inclined column 10 to limit the sliding range of the inclined column 10.

[0014] Spring 12 is provided on the inner wall of the insert plate 9 to provide a restoring force for the inclined column 10. One end of spring 12 is fixedly connected to one side of the inner wall of the insert plate 9, and the other end of spring 12 is fixedly connected to one side of the limiting block 11, so that spring 12 can stably exert its elastic force. A pressing column 13 is slidably connected to the rear side of the inner wall of the rotating column 6, which can press the inclined column 10 by sliding. One end of the pressing column 13 contacts the slope of the inclined column 10, thereby driving the inclined column 10. Two limiting strips 14 are fixedly connected to the outside of the pressing column 13 to ensure that the pressing column 13 slides in a straight line. The outside of the limiting strips 14 is slidably connected to the inner wall of the rotating column 6 to provide a sliding track for the limiting strips 14. A fully removable stop block 15 made of rubber is slidably connected to the front side of the rotating column 6 to stabilize the inclined column 10 through friction characteristics and prevent it from accidentally disengaging.

[0015] Working principle: Clamping plate 1 and clamping plate 2 are hinged by pins to form a lever structure. Squeezing the end of the clamping plate opens and closes the front end. Spring 8 in the elastic component is in a naturally tightened state. Through the support box 7, it drives the rotating posts 6 on both sides, making the clamping pad 3 at the front end of the clamping plate tightly fit the cable surface, using the spring force to provide stable clamping force. During clamping, the connecting wire 5 contacts the cable test end through the contact point 4 to achieve stable transmission of the test signal and meet the electrical connection requirements of high-voltage testing. The plug and inclined post 10 on the plug plate 9 are embedded in the inner wall of the rotating post 6. With the limiting effect of the stop block 15, it ensures that the elastic component is firmly connected to the rotating post 6 and prevents loosening during clamping.

[0016] When spring 8 needs replacement due to weakened elasticity, first remove the stop block 15 on the front side of the rotating column 6 to release the restriction on the inclined column 10. Press the button at the rear end of the squeezing column 13. The squeezing column 13 slides along the inner wall of the rotating column 6, while the limiting strip 14 ensures its linear movement. Its front end squeezes the slope of the inclined column 10, causing the inclined column 10 to compress spring 12 and retract into the insert plate 9, releasing the engagement with the rotating column 6. At this time, the entire assembly of the insert plate 9, support box 7, and spring 8 separates from the rotating column 6, allowing direct removal and replacement of spring 8. After replacement, reverse the operation. The inclined column 10 resets under the elastic force of spring 12, re-engages with the rotating column 6, and the stop block 15 is inserted. Because the stop block 15 is made of rubber, there is some friction between it and the inner wall of the rotating column 6 after insertion, thus completing the fixation and enabling quick maintenance.

[0017] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick fixture for high voltage test of power cable, comprising a first clamp plate (1) and a second clamp plate (2), characterized in that: The clamping plate 1 (1) and clamping plate 2 (2) are hinged by a pin. A rotating post (6) is rotatably connected to the adjacent side of the clamping plate 1 (1) and clamping plate 2 (2). An elastic component for auxiliary clamping of the cable is installed on the adjacent side of the two rotating posts (6). Insert plates (9) are installed on the upper and lower sides of the elastic component. An insert post that is engaged with the rotating post (6) is fixedly connected to the rear side of the insert plate (9). An inclined post (10) that is engaged with the rotating post (6) is slidably connected to the inner wall of the insert plate (9).

2. A quick fixture for high voltage test of power cable according to claim 1, characterized in that: Clamping pads (3) are fixedly connected to the adjacent side of clamping plate one (1) and clamping plate two (2). A connecting wire (5) is passed through the inner wall of one of the clamping pads (3), and a contact point (4) is provided at one end of the connecting wire (5). The outside of the connecting wire (5) passes through the inner wall of clamping plate one (1).

3. A quick fixture for high voltage test of power cable according to claim 1, characterized in that: The elastic component includes a support box (7) detachably connected to one side of the rotating column (6), a spring (8) fixedly connected to the adjacent side of the two support boxes (7), and the adjacent side of the two insert plates (9) fixedly connected to the distant side of the two support boxes (7).

4. A quick fixture for high voltage test of power cable according to claim 3, characterized in that: One side of the inclined column (10) is fixedly connected to a limiting block (11) that slides on the inner wall of the insert plate (9), and the inner wall of the insert plate (9) is provided with a spring (12).

5. A quick fixture for high voltage test of power cable according to claim 4, characterized in that: One end of the second spring (12) is fixedly connected to one side of the inner wall of the insert plate (9), and the other end of the second spring (12) is fixedly connected to one side of the limiting block (11).

6. A quick fixture for high voltage test of power cable according to claim 1, characterized in that: The inner wall of the rotating column (6) is slidably connected to the extrusion column (13), and one end of the extrusion column (13) is in contact with the slope of the inclined column (10).

7. A quick fixture for high voltage test of power cable according to claim 6, characterized in that: The extrusion column (13) is fixedly connected to two limiting strips (14) on the outside, and the limiting strips (14) are slidably connected to the inner wall of the rotating column (6).

8. A quick-release clamp for high-voltage testing of power cables according to claim 1, characterized in that: The front side of the rotating column (6) is slidably connected to a stop (15) that can be completely pulled out.

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