High-voltage test wire clamp and clamping method

Abstract

The invention discloses a high-voltage test wire clamp and a clamping method, and belongs to the field of high-voltage wire clamps, and the high-voltage test wire clamp comprises a connecting seat, the connecting seat is detachably connected with a handle, the connecting seat is movably connected with a mounting seat through a first rotating shaft, two oppositely arranged racks are slidably arranged in the mounting seat, and each rack is fixedly connected with a clamping arm. The two racks are connected with the handle through the driving assembly, the handle rotates around the shaft and drives the two racks to slide through the driving assembly, and the two clamping arms form a clamping structure with a flat front end and a round rear end, so that the wire clamp can adapt to clamped objects in different shapes, the flat front end can be used for clamping flat parts, and the round rear end can be used for clamping round parts conveniently. The universality and practicability of the wire clamp are improved, various test devices and wires can be quickly and accurately connected in a high-voltage test, the test preparation time is shortened, and the test efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage wire clamps, and particularly to a high-voltage test wire clamp and a clamping method. Background Technique

[0002] High-voltage tests are important means to detect the insulation performance of high-voltage primary equipment, and play a crucial role in the safe and stable operation of the test object and even the power system. In most high-voltage tests, it is necessary to collect current, voltage, and pulse signals of the test object, and the performance of the test object is considered and judged based on the monitored data.

[0003] Most high-voltage tests collect current, voltage, and pulse signals through the test special wires carried by the high-voltage test instrument itself. The terminals of the test special wires are usually connected with special test wire clamps. During the test, various leads of the test object need to be connected through the test wire clamps.

[0004] The existing test wire clamps are limited by their shapes and can only be used for clamping test wires. The connection seats of the devices to be tested have various shapes, such as the longitudinal wiring board at the top of the transformer bushing and the horizontal grading ring at the top of the line voltage transformer. The existing test wire clamps have poor adaptability and cannot meet the connection requirements of different devices to be tested. Moreover, the clamping force of the test wire clamps depends on springs, and the clamping force is insufficient. During the test, the wire clamps are easily detached due to the gravitational pull of the test wires, affecting the progress of the high-voltage test. In addition, the different devices to be tested result in different height positions of the test connection parts. Although the existing wire clamps are connected with handles, due to the limitation of the operation structure, the handles cannot be replaced, and different-length handles cannot be replaced according to needs, which is inconvenient to use. Summary of the Invention

[0005] In order to solve the technical problems in the above background technique that the existing test wire clamps have poor overall adaptability and cannot meet the connection requirements of different devices to be tested, the present invention provides a high-voltage test wire clamp.

[0006] The technical solution of the present invention is as follows: The present invention provides a high-voltage test wire clamp, including a connection seat. The connection seat is detachably connected with a handle. The connection seat is movably connected with a mounting seat through a first rotating shaft. Two relatively arranged racks are slidably arranged in the mounting seat. A clamping arm is fixedly connected to each rack. The two racks are connected with the handle through a driving component. When the handle rotates around the axis, the two racks are driven to slide through the driving component. The two clamping arms form a clamping structure with a flat front end and a round rear end, enabling the wire clamp to adapt to different-shaped clamped objects. The flat front end can be used to clamp flat-shaped components, and the round rear end is convenient for clamping round components, improving the versatility and practicability of the wire clamp. In high-voltage tests, various test equipment and wires can be quickly and accurately connected, reducing the test preparation time and improving the test efficiency.

[0007] Preferably, the handle includes an outer tube which is detachably connected to the connecting seat. A driving rod is rotatably connected inside the outer tube. One end of the driving rod is fixedly connected to a handheld part which is located outside the outer tube. The other end of the driving rod is connected to the driving assembly. The detachable outer tube facilitates the replacement and maintenance of the handle. Setting the driving rod inside the outer tube can not only protect the driving rod from the external environment but also make the appearance of the wire clamp neater and more convenient to operate. The user can rotate the driving rod through the handheld part to achieve remote control of the clamping arm.

[0008] Preferably, the driving assembly includes a connecting rod and a second rotating shaft which are perpendicular to each other. The first rotating shaft is of a hollow structure. The second rotating shaft is rotatably arranged inside the first rotating shaft. The connecting rod is rotatably arranged in the connecting seat. The connecting rod and the driving rod are in meshing cooperation through tooth parts and are coaxially arranged. One end of the second rotating shaft is meshed with the connecting rod through a bevel gear set, and the other end of the second rotating shaft is meshed with two racks through gears. Through multi-stage transmission, the rotation of the handle can be converted into the linear motion of the clamping arm, ensuring the uniformity, stability, and firmness of the clamping force. The setting of the bevel gear set can change the direction of force transmission, making the structure more compact and achieving transmission within a limited space. At the same time, the cooperation between components can reduce energy loss and mechanical wear, extend the service life of the wire clamp, and ensure that the test object can be reliably clamped during the high-voltage test, avoiding test failure or safety accidents caused by unstable clamping.

[0009] Preferably, one end of the first rotating shaft is fixedly connected to the mounting seat. The connecting seat is provided with a mounting hole, and the other end of the first rotating shaft is movably arranged in the mounting hole, enabling the mounting seat to rotate or axially move relative to the connecting seat, facilitating the adjustment of the angle of the clamping arm and restricting its position to adapt to different clamping directions and position requirements, enabling the wire clamp to better adapt to various working conditions, improving the operation convenience and adaptability of the wire clamp, reducing the operation difficulties caused by inappropriate clamping angles, and further improving the test efficiency.

[0010] Preferably, a plurality of strip-shaped limiting protrusions are fixedly arranged along the circumferential direction on the outer wall of the end of the first rotating shaft far away from the mounting seat. A limiting groove is also arranged along the circumferential direction on the shaft body of the first rotating shaft. The mounting hole includes a coaxial limiting section and a smooth section. The smooth section is close to the mounting seat. A plug board assembly matched with the limiting groove is slidably arranged on the connecting seat. The plug board assembly is located between the limiting section and the smooth section. The cooperation between the limiting protrusion and the limiting section can limit the first rotating shaft, prevent the mounting seat from rotating around the shaft during use, and ensure the stability and reliability of the wire clamp. The cooperation between the plug board assembly and the limiting groove can quickly release the limit on the first rotating shaft when the angle of the mounting seat needs to be adjusted, facilitate the separation of the limiting protrusion from the limiting section, enable the mounting seat to rotate smoothly, and can be quickly fixed after the adjustment is completed. The operation is simple and fast, improving the flexibility and convenience of using the wire clamp. At the same time, it also enhances the safety of the wire clamp in the high-voltage test environment, avoiding potential safety hazards caused by the loosening of the mounting seat.

[0011] Preferably, the clamping arm includes a first clamping portion fixedly connected to the rack. A second clamping portion is fixedly connected to the end of the first clamping portion far away from the rack. The first clamping portion is of an arc-shaped structure, and the second clamping portion is of a plate-shaped structure. The arc-shaped first clamping portion can better fit the circular object to be clamped, increasing the clamping stability and contact area, reducing the contact resistance, and improving the electrical conductivity. The plate-shaped second clamping portion is suitable for clamping flat objects, enabling the wire clamp to handle test components of various shapes, further enhancing the versatility of the wire clamp, meeting the clamping requirements for different-shaped wires and the connection ends of test equipment in high-voltage tests, and ensuring that the test current can pass through the wire clamp stably and reliably, guaranteeing the accuracy and reliability of test data.

[0012] Preferably, a conductive layer is fixedly installed on the inner walls of the first clamping portion and the second clamping portion, which can reduce the contact resistance between the clamping arm and the object to be clamped, reduce the loss and heating of electric energy at the clamping part, improve the conductive efficiency of the wire clamp, avoid affecting the accuracy of test results due to excessive contact resistance, and at the same time can also reduce potential safety hazards caused by heating, ensuring the safe and stable progress of the test process.

[0013] The present invention provides a clamping method, and the specific process is as follows: Select a handle and connect it to the connecting seat. The driving rod meshes with the connecting rod through the tooth portion; Pull the plug board assembly to separate it from the limiting groove, axially pull the mounting seat, so that the limiting protrusion at the end of the first rotating shaft moves into the smooth section, the second rotating shaft is separated from the connecting rod, and the mounting seat is rotated around the shaft; After the angle adjustment is completed, push the mounting seat, so that the limiting protrusion at the end of the first rotating shaft moves into the limiting section, the second rotating shaft meshes with the connecting rod through the helical gear set, and the plug board assembly is inserted into the limiting groove; Move the two clamping arms to both sides of the part to be clamped. Rotate the driving rod. The driving rod drives the second rotating shaft to rotate around its axis through the connecting rod and the bevel gear set. The second rotating shaft drives the two racks to move through the gears, so that the two clamping arms approach each other to achieve clamping. The operator can quickly adjust the angles and positions of the clamping arms according to actual needs, and then achieve long-distance clamping by rotating the handle. The whole process does not require the aid of complex tools and equipment, reduces the technical requirements for the operator, and improves work efficiency. At the same time, it can ensure the stability and reliability of the wire clamp during the clamping process and guarantee the smooth progress of the high-voltage test.

[0014] Preferably, select the corresponding clamping part according to the shape of the part to be clamped. In high-voltage tests, different equipment and wires may have different shapes and sizes. By selecting the appropriate clamping part, it can ensure close contact between the wire clamp and the object to be clamped, reduce the contact resistance, improve the electrical conductivity, thus guaranteeing the accuracy of test data and the safety of the test process, and avoiding test failures and safety accidents caused by improper clamping.

[0015] It can be seen from the above technical solutions that the advantages of the present invention are as follows: 1. The two clamping arms form a clamping structure with a flat front end and a round rear end, enabling the wire clamp to adapt to objects to be clamped with different shapes. The flat front end can be used to clamp flat-shaped parts, and the round rear end is convenient for clamping round parts, improving the versatility and practicality of the wire clamp. It can quickly and accurately connect various test equipment and wires in high-voltage tests, reduce the test preparation time, and improve the test efficiency.

[0016] 2. The detachable outer tube facilitates the replacement and maintenance of the handle, meeting different requirements. Setting the driving rod inside the outer tube can not only protect the driving rod from the external environment but also make the appearance of the wire clamp neater and more convenient to operate. The user can rotate the driving rod through the handheld part to achieve remote control of the clamping arms.

[0017] 3. Through multi-stage transmission, the rotation of the handle can be converted into the linear motion of the clamping arms, ensuring the uniformity, stability, and firmness of the clamping force. The setting of the bevel gear set can change the direction of force transmission, making the structure more compact and achieving transmission within a limited space. At the same time, the cooperation between components can reduce energy loss and mechanical wear, extend the service life of the wire clamp, and ensure that the test object can be reliably clamped in high-voltage tests, avoiding test failures or safety accidents caused by unstable clamping.

[0018] 4. The mounting base can rotate, axially move and be limited relative to the connecting base, facilitating the adjustment of the angle of the clamping arm and restricting its position to adapt to different clamping directions and position requirements. This enables the wire clamp to better adapt to various working conditions, improves the operation convenience and adaptability of the wire clamp, reduces the operation difficulties caused by inappropriate clamping angles, and further improves the test efficiency. Brief Description of the Drawings

[0019] To more clearly illustrate the technical solutions of the present invention, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 Overall structural schematic diagram of the high-voltage test wire clamp according to one or more embodiments of the present invention; Figure 2 Connection structural schematic diagram of the connecting rod, the first rotating shaft, and the second rotating shaft according to one or more embodiments of the present invention; Figure 3 Principle schematic diagram of the high-voltage test wire clamp according to one or more embodiments of the present invention; Figure 4 Cross-sectional structural schematic diagram at the position of the connecting base according to one or more embodiments of the present invention (bearing omitted); The components represented by the reference numerals in the drawings are as follows: 1. Outer tube; 2. Driving rod; 3. Handheld part; 4. Pin; 5. Connecting base; 6. Connecting rod; 7. Helical gear set; 8. First rotating shaft; 9. Second rotating shaft; 10. Mounting base; 11. Guide rail; 12. Gear; 13. Rack; 14. Clamping arm; 15. Fixed part; 16. First clamping part; 17. Second clamping part; 18. Conductive layer; 19. Tooth part; 20. Limiting protrusion; 21. Limiting groove; 22. Card slot; 23. Cable connecting part; 24. Ratchet; 25. Pawl; 26. Link; 27. Return spring; 28. Push button. Detailed Description of the Embodiments

[0021] To make the objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments of the present invention. Obviously, the embodiments described below are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this patent.

[0022] Embodiment 1 In a typical embodiment of the present invention, as Figures 1-4 shown, a high-voltage test line clamp is proposed, which includes: a handle, a connection seat 5, a mounting seat 10 and clamping arms 14. The handle is detachably connected to the connection seat, capable of adapting to the requirements of different working scenarios. The handle is a structure that rotates around an axis. The mounting seat 10 is movably arranged on the connection seat 5, and two racks 13 are slidably arranged inside the mounting seat 10. The racks 13 are slidably arranged in the guide rails 11. The two racks 13 are arranged opposite to each other. Each rack 13 is fixedly connected to a clamping arm 14. The two racks 13 are connected to the handle at the end of the connection seat 5 through a driving component. The rotation of the handle around the axis drives the driving component to work. The driving component meshes with the two racks 13 to control the sliding of the two racks 13, so that the two clamping arms 14 approach or move away from each other.

[0023] Specifically, the handle includes an outer tube 1, a driving rod 2 and a hand-held part 3. The driving rod 2 is rotatably arranged inside the outer tube 1. In this embodiment, the driving rod 2 is rotatably connected to the outer tube 1 through a bearing. The outer wall of the driving rod 2 is fixedly connected to the inner ring of the bearing, and the outer ring of the bearing is fixedly connected to the inner wall of the outer tube 1, so that the driving rod 2 and the outer tube 1 are coaxially arranged and can rotate relative to each other around the axis. One end of the driving rod 2 is fixedly connected to the hand-held part 3, and the hand-held part 3 is located outside the outer tube 1. The other end of the driving rod 2 is used to connect to the driving component to drive the driving component to work.

[0024] It should be noted that the outer tube 1, the driving rod 2 and the hand-held part 3 are all made of insulating materials to ensure the safety during the operation of screwing the handle.

[0025] At one end of the outer tube 1 away from the hand-held part 3, that is, on the outer wall of the end of the outer tube 1 for connecting to the connection seat 5, a pin 4 is installed. The axial direction of the pin 4 is perpendicular to the axial direction of the outer tube 1. At the end of the connection seat 5 for connecting to the handle, there is a jack, and a card slot 22 is provided on the side wall of the connection seat 5. The card slot 22 is Z-shaped and contains two vertical sections and one horizontal section. One of the vertical sections penetrates through the end of the connection seat 5 close to the handle. The card slot 22 is communicated with the jack. The card slot 22 cooperates with the pin 4 to realize the quick disassembly and assembly of the outer tube 1 and the connection seat 5.

[0026] A first rotating shaft 8 is fixedly provided on the mounting base 10. The mounting base 10 is movably connected to the connecting base 5 through the first rotating shaft 8. The first rotating shaft 8 is of a hollow structure. A limiting portion is fixedly provided on the outer wall of the end of the first rotating shaft 8 away from the mounting base 10 along its circumferential direction. The limiting portion is composed of a plurality of strip-shaped limiting protrusions 20. The limiting protrusions 20 are evenly arranged along the circumferential direction. A limiting groove 21 is also provided on the shaft body of the first rotating shaft 8 along its circumferential direction. An installation hole and an insertion plate assembly that cooperate with the first rotating shaft 8 are provided on the connecting base 5. Specifically, the installation hole is divided into two sections. One section is a limiting section that cooperates with the limiting portion. A plurality of grooves are provided on the side wall of the limiting section for cooperating with the limiting portion to limit the rotation of the first rotating shaft 8 around its axis. The other section of the installation hole is a smooth section. The inner wall of the smooth section is smooth. When the limiting portion is located in the smooth section, the rotation of the first rotating shaft 8 around its axis is allowed. The limiting section and the smooth section are coaxially arranged. The smooth section is close to the mounting base 10, and the limiting section is close to the connecting rod 6. The insertion plate assembly includes an insertion plate slidably arranged on the connecting base 5. A pull rod is fixedly installed on the insertion plate. The pull rod is slidably arranged vertically on the connecting base 5, and the top end of the pull rod extends outwards. A spring is sleeved on the pull rod. The insertion plate can be inserted into the limiting groove 21 to limit the axial movement of the first rotating shaft 8. The insertion plate is located between the smooth section and the limiting section. With the cooperation of the limiting portion and the limiting section, the axial movement and the rotation around the axis of the first rotating shaft 8 can be limited simultaneously. In order to facilitate the operation of the pull rod, a pull ring can also be installed at the end of the pull rod.

[0027] As Figures 2-3 shown, the driving assembly includes a connecting rod 6, a bevel gear set 7, a second rotating shaft 9, and a gear 12. The connecting rod 6 is rotatably arranged in the connecting base 5 through a bearing. A tooth portion 19 is fixedly provided on one end face of the connecting rod 6. A tooth portion 19 is also fixedly provided on the end face of the driving rod 2 away from the hand-held portion 3. The driving rod 2 is connected to the connecting rod 6 through the tooth portion 19. The connecting rod 6 and the driving rod 2 are coaxially arranged. Thus, the driving rod 2 can be used to drive the connecting rod 6 to rotate around its axis. The setting of the tooth portion 19 enables the driving rod 2 to be quickly connected and matched with the connecting rod 6 without adjusting the rotation angles of the driving rod 2 and the connecting rod 6, which facilitates the use.

[0028] The second rotating shaft 9 is rotatably arranged inside the first rotating shaft 8 through bearings, and the first rotating shaft 8 and the second rotating shaft 9 are coaxially arranged. The second rotating shaft 9 can rotate around its axis, and the axial direction of the second rotating shaft 9 is perpendicular to the axial direction of the connecting rod 6. One end of the second rotating shaft 9 is located inside the connecting seat 5, and the other end of the second rotating shaft 9 is located inside the mounting seat 10. The bevel gear set 7 includes a helical bevel gear and a bevel gear pair. Among them, the bevel gear pair is fixedly installed at one end of the connecting rod 6 away from the tooth part 19, and the helical bevel gear is fixedly installed at one end of the second rotating shaft 9 located inside the connecting seat 5. A gear 12 is fixedly provided at one end of the second rotating shaft 9 located inside the mounting seat 10. The second rotating shaft 9 is meshed with the connecting rod 6 through the bevel gear set 7. The driving rod 2 can drive the second rotating shaft 9 to rotate around its axis through the connecting rod 6. The gear 12 at the end of the second rotating shaft 9 is located between two racks 13 and meshes with the two racks 13 respectively. During the process of the second rotating shaft 9 rotating around its axis, the two racks 13 are driven to move relative to each other, so that the two oppositely arranged clamping arms 14 approach or move away from each other.

[0029] As Figure 4 shown, a ratchet 24 is fixedly provided on the connecting rod 6. The ratchet 24 is coaxially arranged with the connecting rod 6. A driving assembly is provided inside the connecting seat 5 to limit the movement of the rack 13 through the cooperation of the driving assembly and the ratchet 24 to ensure the stability of the clamping force. Specifically, the driving assembly includes a pawl 25, a connecting rod 26 and a push button 28. An installation space is provided inside the side wall of the connecting seat 5. Both the pawl 25 and the push button 28 are slidably arranged inside the connecting seat 5. The pawl 25 is located on one side of the ratchet 24, and the push button 28 is close to the bottom opening of the connecting seat 5. The pawl 25 and the push button 28 are fixedly connected through the connecting rod 26. The connecting rod 26 is parallel to the axis of the connecting seat 5. The pawl 25, the push button 28 and the connecting rod 26 are perpendicular to each other. A support rod is also fixedly provided inside the installation space of the connecting seat 5. The connecting rod 26 is slidably arranged on the support rod, and a return spring 27 is sleeved on the support rod to push the connecting rod 26 to reset through the return spring 27.

[0030] It should be noted that in this embodiment, the ratchet 24 and the pawl 25 are used to cooperate to limit the two racks 13 from moving away from each other to ensure the stability of clamping.

[0031] Specifically, after the outer tube 1 is inserted into the connecting seat 5, the outer wall of the outer tube 1 pushes the push button 28 to move, and then drives the pawl 25 to move through the connecting rod 26, so as to cancel the cooperation between the pawl 25 and the ratchet 24. The driving rod 2 can drive the connecting rod 6 to rotate around its axis, and then drive the movement of the two racks 13. When the outer tube 1 is pulled out, under the action of the return spring 27, the connecting rod 6 resets, and then the pawl 25 resets to cooperate with the ratchet 24 to limit the rotation of the connecting rod 6 to prevent the two racks 13 from automatically moving away from each other and ensure the stability of clamping.

[0032] The clamping arm 14 includes a fixing part 15, a first clamping part 16 and a second clamping part 17. Among them, the fixing part 15 is fixedly arranged on the corresponding rack 13. The fixing part 15 is slidably connected with the guide rail 11. The fixing part 15 is also fixedly connected with the first clamping part 16. One end of the first clamping part 16 away from the fixing part 15 is fixedly connected with the second clamping part 17. The first clamping part 16 is an arc-shaped structure, and the second clamping part 17 is a plate-shaped structure. Thus, the two clamping arms 14 form a clamping structure with a flat front end and a round rear end to adapt to different shapes of structures to be clamped. For example, a cable is clamped by the first clamping part 16, and a rectangular part is clamped by the second clamping part 17.

[0033] A conductive layer 18 is fixedly installed on the inner walls of the first clamping part 16 and the second clamping part 17. The conductive layer 18 is made of a metal material with superconducting properties to increase the contact area, reduce the transition resistance, and reduce the influence of the wire clamp on the high-voltage test measurement data. The conductive layer 18 is also connected to the high-voltage test instrument through a wire.

[0034] A cable connection part 23 is fixedly provided on the outer wall of the second clamping part 17 to be used for realizing the connection of the wire harness. By arranging the cable connection part 23 at the second clamping part 17, the transition resistance is effectively reduced.

[0035] Embodiment 2 In a typical implementation manner of the present invention, a clamping method for a high-voltage test wire clamp is proposed as follows: First, select a handle with a corresponding length according to the height of the clamping part of the device to be tested. Connect and fix the outer tube 1 of the handle to the connecting seat 5, so that the tooth part 19 at the end of the driving rod 2 in the outer tube 1 meshes with the tooth part 19 at the end of the connecting rod 6 in the connecting seat 5; Pull the plug board to separate the plug board from the limiting groove 21. Axially pull the mounting seat 10 so that the first rotating shaft 8 moves in a direction away from the connecting seat 5 until the limiting part at the end of the first rotating shaft 8 moves from the limiting section of the mounting hole of the connecting seat 5 to the smooth section. At this time, the bevel gear with helical teeth at the end of the second rotating shaft 9 is separated from the bevel gear pair at the end of the connecting rod 6. Rotate the mounting seat 10 around the axis to drive the clamping arm 14 to rotate, so as to adapt to the clamping parts at different angles; After the angle adjustment is completed, push the mounting seat 10 so that the first rotating shaft 8 moves in a direction close to the connecting seat 5 until the limiting part at the end of the first rotating shaft 8 moves from the smooth section of the mounting hole of the connecting seat 5 to the limiting section. At this time, the bevel gear with helical teeth at the end of the second rotating shaft 9 meshes with the bevel gear pair at the end of the connecting rod 6, and the plug board is inserted into the limiting groove 21 on the outer wall of the first rotating shaft 8 under the action of the spring, thereby realizing the limitation of the mounting seat 10 to prevent the mounting seat 10 from moving axially and rotating around the axis; Move the two clamping arms 14 to both sides of the part to be clamped. Hold the outer tube 1 firmly with one hand and rotate the drive rod 2 with the other hand. The drive rod 2 drives the second rotating shaft 9 to rotate around its axis through the connecting rod 6 and the helical gear set 7. The second rotating shaft 9 drives the two racks 13 to move through the gear 12, so that the two clamping arms 14 approach each other to achieve clamping. When the test is completed, rotate the drive rod 2 in the reverse direction to make the two clamping arms 14 move away from each other.

[0036] It should be noted that during the actual clamping process, the corresponding clamping part needs to be selected according to the shape of the part to be clamped to ensure firm clamping and sufficient contact area.

[0037] In this embodiment, since the clamping arms 14 are driven by the gear 12 and the rack 13 to achieve clamping, the clamping force no longer depends on the spring, and the clamping is more firm and stable. When the handle needs to be removed, it can be quickly disassembled by simply pulling down and rotating the handle, which is convenient for on-site use.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-voltage test line clamp, comprising: Connecting seat (5), characterized in that the connecting seat (5) is detachably connected with a handle, the connecting seat (5) is movably connected with a mounting seat (10) through a first rotating shaft (8), two oppositely arranged racks (13) are slidably arranged in the mounting seat (10), a clamping arm (14) is fixedly connected to each rack (13), the two racks (13) are connected with the handle through a driving assembly, the handle rotates around the shaft and drives the two racks (13) to slide through the driving assembly, and the two clamping arms (14) form a clamping structure with a flat front end and a round rear end.

2. The high-voltage test line clamp according to claim 1, characterized in that, The handle includes an outer tube (1), the outer tube (1) is detachably connected with the connecting seat (5), a driving rod (2) is rotatably connected inside the outer tube (1), one end of the driving rod (2) is fixedly connected with a hand-held part (3), the hand-held part (3) is located outside the outer tube (1), and the other end of the driving rod (2) is connected with the driving assembly.

3. The high-voltage test line clamp according to claim 2, characterized in that, The driving assembly includes a connecting rod (6) and a second rotating shaft (9) that are perpendicular to each other. The first rotating shaft (8) is a hollow structure. The second rotating shaft (9) is rotatably arranged inside the first rotating shaft (8). The connecting rod (6) is rotatably arranged in the connecting seat (5). The connecting rod (6) is in cooperation with the driving rod (2) through a tooth part (19). The connecting rod (6) and the driving rod (2) are coaxially arranged. One end of the second rotating shaft (9) is meshed with the connecting rod (6) through a helical gear set (7), and the other end of the second rotating shaft (9) is meshed with the two racks (13) through a gear (12).

4. The high-voltage test line clamp according to claim 1, characterized in that One end of the first rotating shaft (8) is fixedly connected with the mounting seat (10), there is a mounting hole on the connecting seat (5), and the other end of the first rotating shaft (8) is movably arranged in the mounting hole.

5. The high-voltage test wire clamp according to claim 4, characterized in that, A plurality of long strip-shaped limiting protrusions (20) are fixedly arranged along the circumferential direction on the outer wall of one end of the first rotating shaft (8) away from the mounting seat (10). A limiting groove (21) is also arranged along the circumferential direction on the shaft body of the first rotating shaft (8). The mounting hole includes a coaxial limiting section and a smooth section. The smooth section is close to the mounting seat (10). A plug plate assembly that cooperates with the limiting groove (21) is slidably arranged on the connecting seat (5), and the plug plate assembly is located between the limiting section and the smooth section.

6. The high-voltage test wire clamp according to claim 1, characterized in that, The clamping arm (14) includes a first clamping part (16) fixedly connected with the rack (13). One end of the first clamping part (16) away from the rack (13) is fixedly connected with a second clamping part (17). The first clamping part (16) is an arc-shaped structure, and the second clamping part (17) is a plate-shaped structure.

7. The high-voltage test line clamp according to claim 6, wherein, Conductive layers (18) are fixedly installed on the inner walls of the first clamping part (16) and the second clamping part (17).

8. The high-voltage test line clamp according to claim 2, wherein, A retaining pin (4) is fixedly arranged on the outer wall of the outer tube (1). There is a card slot (22) on the connecting seat (5) that cooperates with the retaining pin (4). The retaining pin (4) is perpendicular to the axial direction of the outer tube (1). The card slot (22) is Z-shaped, and the card slot (22) is communicated with the inside of the connecting seat (5) and penetrates through one end of the connecting seat (5) close to the handle.

9. A clamping method, characterized in that, The high-voltage test line clamp as described in any one of claims 1-8 is adopted, and the specific process is as follows: Select a handle and connect it with the connecting seat (5), and the driving rod (2) is meshed with the connecting rod (6) through the tooth part (19); Pull the plug board assembly to separate it from the limit slot (21), axially pull the mounting seat (10) so that the limit projection (20) at the end of the first rotating shaft (8) moves into the smooth section, and the second rotating shaft (9) is separated from the connecting rod (6), then rotate the mounting seat (10) around the axis; After the angle adjustment is completed, push the mounting seat (10) so that the limit projection (20) at the end of the first rotating shaft (8) moves into the limit section, the second rotating shaft (9) meshes with the connecting rod (6) through the helical gear set (7), and the plug board assembly is inserted into the limit slot (21); Move the two clamping arms (14) to both sides of the part to be clamped, rotate the drive rod (2), the drive rod (2) drives the second rotating shaft (9) to rotate around the axis through the connecting rod (6) and the helical gear set (7), and the second rotating shaft (9) drives the two racks (13) to move through the gears (12) so that the two clamping arms (14) approach each other to achieve clamping.

10. The clamping method according to claim 9, wherein Select the corresponding clamping part according to the shape of the part to be clamped.

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