Lightning arrester tester clamp structure

Abstract

The invention discloses a lightning arrester tester clamp structure, and belongs to the technical field of power grid test structures, the lightning arrester tester clamp structure comprises a clamp head, the clamp head comprises a clamp shell, the clamp shell is provided with a rotating assembly, the rotating assembly comprises an annular base disc with an opening, the base disc is eccentrically provided with an annular rotating rail with an opening, and the annular rotating rail is provided with a clamping groove. And the rotating rail is fixedly connected with the clamp shell. According to the scheme, the clamp head is used for placing a wire to measure current, the rotating rail on the rotating assembly can drive the clamp head to rotate, and the base disc and the rotating rail are eccentrically arranged, so that when the rotating rail rotates, the clamp head is driven to eccentrically rotate around the base disc together, and the relative position of the wire in the clamp head can be changed; therefore, the current of the wire at different point positions in the clamp head is measured, the accuracy of the measurement result is improved, the position of the base disc is kept immobile during measurement, and the potential safety hazard caused by continuously swinging the insulating rod to adjust the position of the clamp head is avoided.

Description

Technical Field

[0001] The invention relates to a current test clamp, and more particularly to a clamp structure of a lightning arrester tester. Background Art

[0002] A lot of manpower and material resources are required to deal with zinc oxide lightning arresters. In order to ensure the safe operation of the power system and improve the quality of power supply, regular inspections of zinc oxide lightning arresters in the lines can effectively eliminate potential accidents. Wireless current clamps are used in inspections and tests. Since zinc oxide lightning arresters are mostly placed on poles or in the air, wireless circuit clamps are generally equipped with insulating rods for on-site operations, so that climbing poles can be avoided. To ensure the accuracy of the measurement results, the operator sometimes performs multiple measurements when using wireless current clamps equipped with insulating rods. In each measurement (the wire is in the clamp hole), the operator on the ground continuously swings the insulating rod to adjust the position of the clamp head (forming multiple measurements). First of all, the operation is not easy to adjust, and it is easy to hit the wire, which can easily cause safety hazards.

[0003] For example: Chinese patent announcement number CN110794240A, announcement date February 14, 2020, invention name is a zinc oxide lightning arrester live tester that is easy to use at night. The application discloses a lightning arrester tester structure, which is provided with automatically rotatable wire limit posts and LED lighting lamps on the left and right sides of the jaws of the wireless current clamp body, and the servo motor cooperates with the drive mechanism to realize the reverse rotation of the wire limit posts and the lighting board with LED lighting lamps, so that the upper end of the jaws is in an open state; this scheme can make the operating environment in a relatively bright environment, which is easy to operate at night. However, when performing multi-point measurements, this scheme needs to continuously swing the insulating rod to adjust the position of the clamp head, which is easy to hit the wire and cause safety hazards. Summary of the invention

[0004] The present invention overcomes the problems of inconvenient measurement and potential safety hazards of existing lightning arrester testers, and provides a lightning arrester tester clamping structure. This scheme realizes fixed-position multi-point measurement of the lightning arrester tester, greatly improving the accuracy of the test results of the lightning arrester tester and the safety of use.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a clamp structure of a lightning arrester tester, including a clamp head, the clamp head including a clamp shell, the clamp shell is provided with a rotating assembly, the rotating assembly includes an annular base plate with an opening, the base plate is eccentrically provided with an annular rotating rail with an opening, and the rotating rail is fixedly connected to the clamp shell. In this solution, the clamp head is used to place the wire to measure the current, the rotating rail on the rotating assembly can drive the clamp head to rotate, and the base plate and the rotating rail are eccentrically arranged, so that when the rotating rail rotates, it drives the clamp head to rotate eccentrically around the base plate, so that the relative position of the wire inside the clamp head can be changed, so as to measure the current of the wire at different points inside the clamp head, improve the accuracy of the measurement result, and only need to keep the base plate in place during measurement, avoiding the continuous swinging of the insulating rod to adjust the position of the clamp head, causing safety hazards.

[0006] Preferably, the rotating rail and the base plate are C-shaped, and the opening of the rotating rail is in the same direction as the jaws of the clamp head. The rotating rail and the base plate are both C-shaped and have openings for inserting wires, and the opening of the rotating rail and the jaws of the clamp head need to be in the same direction, which is also a necessary condition for inserting wires into the jaws.

[0007] Preferably, the base plate is further provided with a receiving area, in which a driving component is provided, and the driving component is linked with the rotating rail. The receiving area on the base plate is used to receive the driving component of the entire measuring instrument, and the driving component is used to drive the rotating rail to rotate.

[0008] Preferably, the rotating rail is provided with meshing teeth in the circumference, and the base plate is also provided with gears connected to the meshing teeth. The meshing teeth are driven by the gears on the base plate, and then drive the rotating rail to rotate.

[0009] Preferably, the driving component further comprises a driving device and a transmission part, wherein the driving device is connected to the transmission part, the transmission part is in transmission connection with the gear, and the transmission part and the gear are arranged on both sides of the base plate. The driving device can be a small motor, the output power drives the transmission part to rotate, and the transmission part drives the gear to rotate, wherein the transmission part and the gear are arranged on both sides of the base plate, and the design is relatively reasonable, so as to avoid the transmission part and the gear being arranged on the same side to increase the space between the base plate and the pliers head.

[0010] Preferably, the pliers head further comprises a pliers arm, the pliers arm is rotatably connected to the pliers housing, and a guide arc surface is provided on the pliers arm. The pliers arm is mounted on the pliers housing and can rotate. The pliers arm can be opened and closed by rotation to allow the wire to enter or escape from the pliers. The guide arc surface can guide the wire to enter the pliers, facilitating the wire to enter the pliers.

[0011] Preferably, the eccentricity between the base plate and the rotating rail is 10 mm to 20 mm. The eccentricity between the base plate and the rotating rail cannot be too large, otherwise the jaws and the base plate will clamp or cut the wires; similarly, the spacing cannot be too small, otherwise during the rotation of the clamp head, the position of the wire relative to the jaws will not change much, and the result of multi-point measurement may be inaccurate. Therefore, it is more reasonable to set the eccentricity between 10 mm and 20 mm.

[0012] Preferably, a plurality of limiters are arranged on the base plate and on both sides of the rotating rail, and the limiters are arranged in a ring-like arrangement at intervals. The limiters can limit the rotating rail to prevent the rotating rail from leaving the base plate, ensure that the rotating rail can rotate around the base plate, and then drive the clamp head to rotate to achieve multi-point measurement.

[0013] Preferably, the limiting member includes a shaft column and a baffle plate, and a roller is rotatably connected to the shaft column. The shaft column can be equipped with the roller, and the baffle plate can limit the end surface of the rotating rail, so that the rotating rail is close to the base plate, and the roller can roll with the rotating rail, which greatly reduces the rotation friction of the rotating rail and improves the working efficiency.

[0014] Preferably, the base is further provided with a fixing part, which is used to connect the insulating rod and to lift the entire clamping structure of the arrester tester, and the fixing part may be a threaded structure or a buckle structure.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) it can realize fixed-position multi-point measurement of the arrester tester, greatly improving the accuracy of the test results and the safety of use of the arrester tester; (2) the automated design uses a motor to drive the clamp head to rotate, greatly improving the practical convenience of the arrester tester; (3) after the angle of the clamp head can be adjusted, the clamp head can approach the wire from other directions, and it is not easy to touch the insulator, arrester or angle iron next to the zinc oxide arrester conductor, ensuring that the clamp head will not be in a high voltage state or directly burned. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axonometric drawing of the present invention.

[0017] Figure 2 This is an axonometric view from another perspective of the present invention.

[0018] Figure 3 It is a schematic diagram of the base structure of the present invention.

[0019] Figure 4 for Figure 3 A is an enlarged schematic diagram.

[0020] Figure 5 This is an axonometric view from another perspective of the base structure of the present invention.

[0021] In the figure: 1. test meter body, 2. clamp head, 21. clamp housing, 22. clamp arm, 221. guide arc surface, 222. guide slope, 3. base plate, 31. accommodating area, 4. rotating rail, 41. mounting seat, 42. raised part, 43. meshing teeth, 44. inner concave cavity, 5. gear, 6. limiter, 61. shaft column, 62. baffle plate, 7. sealing cover, 8. fixing part, 9. driving component, 91. driving device, 92. transmission part, 93. synchronous belt, 10. control module. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0023] Example 1: Figures 1 to 4 A lightning arrester tester clamp structure shown includes a wireless current clamp, which includes a test meter body 1 and a clamp head 2. The clamp head 2 is fixedly arranged on the test meter body 1. The clamp head 2 includes a clamp shell 21 and two clamp arms 22. The wireless current clamp is based on Ampere's loop theorem and Faraday's law of electromagnetic induction. A variable magnetic flux is introduced into the circuit to induce the current size, and the magnetic field of the measured current is coiled, and the magnetic field strength is converted into an electrical signal, and then the electrical signal is amplified to a certain extent to obtain the current size. The specific internal structure of the device will not be described in detail here.

[0024] A rotating assembly is also provided on the clamp housing 21, and the rotating assembly includes a base plate 3 and a rotating rail 4. The base plate 3 is a C-shaped plate-like structure, and the base plate 3 is provided with an annular rotating rail 4. Similarly, the rotating rail 4 is also C-shaped, and an opening is provided on the rotating rail 4. The opening size of the rotating rail 4 is adapted to the opening size on the base plate 3. The rotating rail 4 and the base plate 3 are arranged close to each other, and there is no direct connection between the two. A plurality of limiting members 6 are arranged in an annular manner on the base plate 3, and the limiting members 6 are arranged on both sides of the rotating rail 4, and are used to limit the rotating rail 4 to prevent the rotating rail 4 from being separated from the base plate 3.

[0025] Specifically, the limit member 6 includes a shaft column 61 and a baffle 62, one end of the shaft column 61 is fixed to the surface of the base plate 3, and the other end of the shaft column 61 is fixed with a baffle 62 structure, the distance from the surface of the base plate 3 to the baffle 62 is slightly larger than the size of the rotating rail 4, that is, the rotating rail 4 is located between the surface of the base plate 3 and the baffle 62, the radial dimension of the baffle 62 is larger than the radial dimension of the shaft column 61, and the spacing between the shaft columns 61 on both sides of the rotating rail 4 is also adapted to the width of both sides of the rotating rail 4, so that the shaft column 61 can prevent the rotating rail 4 from radially displacing and detaching from the base plate 3, and the baffle 62 can prevent the rotating rail 4 from detaching from the base plate 3 along the axial centerline direction of the base plate 3, thereby realizing the initial positioning of the rotating rail 4 on the base plate 3. The rotating rail 4 can rotate on the base plate 3 along the arrangement direction of the limit member 6, so that the rotating rail 4 can rotate relative to the base plate 3; in order to reduce the friction between the rotating rail 4 and the limit member 6, a roller structure is also arranged on the shaft column 61, and the roller can rotate relative to the shaft column 61, that is, the roller can rotate around the shaft column 61. When the rotating rail 4 rotates along the arrangement direction of the limit member 6, it rolls between the rollers, reducing the friction between the rotating rail 4 and the limit member 6, and the rollers can also press against the two sides of the rotating rail 4.

[0026] Among them, one side of the rotating rail 4 is close to the surface of the base plate 3, and a mounting seat 41 is provided on the opposite side of the rotating rail 4. In order to avoid the baffle 62 on the shaft column 61, the connection area between the mounting seat 41 and the rotating rail 4 needs to be smaller than the minimum distance between the two baffles 62 at the same radial position. Specifically, a smaller protrusion 42 can be provided on the rotating rail 4 to fix the mounting seat 41. The height of the protrusion 42 needs to exceed the height of the baffle 62, so as to avoid interference between the mounting seat 41 and the baffle 62. One side of the mounting seat 41 is fixedly connected to the rotating rail 4, and the opposite side is fixedly connected to the clamp head 2. Specifically, the mounting seat 41 is fixedly connected to the clamp housing 21 of the clamp head 2; Figure 3 As shown, there are eight mounting seats 41 in total, and they are evenly spaced along the rail body of the rotating rail 4, also in a C-shaped arrangement, and the two clamp arms 22 of the clamp head 2 and the clamp housing 21 are also in a C-shape, so that each mounting seat 41 can be fixedly connected to the clamp housing 21, thereby improving the connection strength between the rotating rail 4 and the clamp head 2, and can effectively avoid the safety hazard caused by the clamp head 2 being thrown out due to the large centrifugal force when it rotates.

[0027] Since the rotating rail 4 is fixedly connected to the clamp head 2, when the rotating rail 4 rotates, the clamp head 2 will be driven to rotate together. It should be noted that the connection surface area between the mounting seat 41 and the clamp housing 21 is larger than the connection area between the mounting seat 41 and the rotating rail 4, which can effectively fix the clamp housing 21 on the rotating rail 4.

[0028] It should also be noted that the rotating rail 4 and the base plate 3 are arranged eccentrically, that is, the axis centerline position of the rotating rail 4 is not colinear with the axis centerline position of the base plate 3. In this embodiment, the eccentricity between the rotating rail 4 and the base plate 3 is designed to be 15 mm. Therefore, there is also an eccentricity of 15 mm between the clamp head 2 and the base plate 3, and when the clamp head 2 rotates relative to the base plate 3, it also rotates eccentrically. That is, when there is an electric wire inside the jaws of the clamp head 2, the eccentric rotation of the clamp head 2 relative to the base plate 3 can change the position of the electric wire relative to the inside of the jaws of the clamp head 2, thereby realizing continuous multi-point measurement, improving the measurement accuracy of the wireless current clamp, and avoiding the continuous swinging of the base plate 3 to adjust the position of the clamp head 2, which causes safety hazards.

[0029] It should also be noted that the rail body length of the rotating rail 4 is greater than the opening length of the base plate 3, so that when one end of the rotating rail 4 rotates away from the base plate 3 (that is, one end of the rotating rail 4 is located at the opening of the base plate 3), the other end of the rotating rail 4 still exists between the limit members 6 on the base plate 3. As the rotating rail 4 continues to rotate, the end of the rotating rail 4 will enter the base plate 3 from the other side of the opening of the base plate 3, thereby realizing a 360-degree circular rotation of the rotating rail 4 on the base plate 3, that is, the clamp head 2 can perform a 360-degree circular rotation to collect measurement data of the wire current within a 360-degree range.

[0030] The opening of the clamp head 2 is adapted to the opening of the rotating rail 4, and the opening of the clamp head 2 and the opening of the rotating rail 4 are kept in the same direction at any time. When the opening of the clamp head 2 is rotated to be aligned with the opening direction of the base plate 3, the wire can be placed in the jaws of the clamp head 2.

[0031] The two clamp arms 22 of the clamp head 2 are provided with guide arc surfaces 221, which are arranged on the side of the opening of the clamp arms 22 facing outward, and the clamp arms 22 are rotatably connected to the clamp housing 21. Under normal conditions, the two clamp arms 22 are in a closed state. When inserting a wire, the guide arc surfaces 221 on the two clamp arms 22 only need to be pushed forward toward the position where the wire is located, and the wire will squeeze the guide arc surfaces 221 on the two clamp arms 22, thereby pushing the two guide arc surfaces 221 apart and entering the inside of the jaws of the clamp head 2. Similarly, a guide inclined surface 222 is provided on one side of the clamp arm 22 located inside the jaws. When the wire is to be separated from the jaws, the clamp head 2 only needs to be pulled back so that the wire is squeezed on the guide inclined surface 222, and the two guide inclined surfaces 222 are pushed apart, and then separated from the jaws. Of course, in order to ensure that the two clamp arms 22 can be reset to a closed state in time, an elastic member should be provided on the clamp arm 22, which is a conventional design and will not be described in detail.

[0032] Two gears 5 are arranged on the base plate 3 and on one side where the rotating rail 4 is located. The gears 5 are rotationally connected to the base plate 3. The gears 5 are arranged on the outer diameter side close to the rotating rail 4, and an inner concave cavity 44 is arranged on the rotating rail 4. The inner concave cavity 44 covers the entire rail body length of the rotating rail 4 and is also arranged on the outer diameter side of the rotating rail 4. A plurality of meshing teeth 43 are arranged in the inner concave cavity 44. The meshing teeth 43 mesh with the gears 5 for transmission. When the gears 5 rotate, the rotating rail 4 also rotates through the meshing of the meshing teeth 43 and the gears 5, thereby realizing the rotation of the rotating rail 4.

[0033] Since the angle of the jaws of the clamp head 2 can be adjusted, the clamp head 2 can approach the wire from other directions, so it is not easy to touch the insulator, lightning arrester or angle iron next to the zinc oxide lightning arrester wire, ensuring that the clamp head 2 will not be in a high voltage state or directly burned.

[0034] A fixing portion 8 is also provided at the bottom of the base plate 3. The fixing portion 8 is used to connect the insulating rod and to lift the entire clamping structure of the arrester tester. The fixing portion 8 may be a threaded structure or a buckle structure.

[0035] When using the clamp structure of the arrester tester, it is only necessary to connect the fixing part 8 and the insulating rod, then lift the wireless current clamp to the specified position, and then insert the wire into the inside of the jaws. At this time, the driving component drives the gear 5 to rotate, and the gear 5 drives the rotating rail 4 to rotate, and then drives the clamp head 2 to rotate. The clamp head 2 rotates eccentrically around the base plate 3, thereby changing the relative position of the wire inside the jaws. During the whole process, the base plate 3 only needs to remain stationary, that is, the insulating rod remains stationary, thereby achieving the effect of fixed-position multi-point measurement.

[0036] Example 2: Figures 1 to 5 A lightning arrester tester clamp structure shown includes a wireless current clamp, which includes a test meter body 1 and a clamp head 2. The clamp head 2 is fixedly arranged on the test meter body 1. The clamp head 2 includes a clamp shell 21 and two clamp arms 22. The wireless current clamp is based on Ampere's loop theorem and Faraday's law of electromagnetic induction. A variable magnetic flux is introduced into the circuit to induce the current size, and the magnetic field of the measured current is coiled, and the magnetic field strength is converted into an electrical signal, and then the electrical signal is amplified to a certain extent to obtain the current size. The specific internal structure of the device will not be described in detail here.

[0037] A rotating assembly is also provided on the clamp housing 21, and the rotating assembly includes a base plate 3 and a rotating rail 4. The base plate 3 is a C-shaped plate-like structure, and the base plate 3 is provided with an annular rotating rail 4. Similarly, the rotating rail 4 is also C-shaped, and an opening is provided on the rotating rail 4. The opening size of the rotating rail 4 is adapted to the opening size on the base plate 3. The rotating rail 4 and the base plate 3 are arranged close to each other, and there is no direct connection between the two. A plurality of limiting members 6 are arranged in an annular manner on the base plate 3, and the limiting members 6 are arranged on both sides of the rotating rail 4, and are used to limit the rotating rail 4 to prevent the rotating rail 4 from being separated from the base plate 3.

[0038] Specifically, the limit member 6 includes a shaft column 61 and a baffle 62, one end of the shaft column 61 is fixed to the surface of the base plate 3, and the other end of the shaft column 61 is fixed with a baffle 62 structure, the distance from the surface of the base plate 3 to the baffle 62 is slightly larger than the size of the rotating rail 4, that is, the rotating rail 4 is located between the surface of the base plate 3 and the baffle 62, the radial dimension of the baffle 62 is larger than the radial dimension of the shaft column 61, and the spacing between the shaft columns 61 on both sides of the rotating rail 4 is also adapted to the width of both sides of the rotating rail 4, so that the shaft column 61 can prevent the rotating rail 4 from radially displacing and detaching from the base plate 3, and the baffle 62 can prevent the rotating rail 4 from detaching from the base plate 3 along the axial centerline direction of the base plate 3, thereby realizing the initial positioning of the rotating rail 4 on the base plate 3. The rotating rail 4 can rotate on the base plate 3 along the arrangement direction of the limit member 6, so that the rotating rail 4 can rotate relative to the base plate 3; in order to reduce the friction between the rotating rail 4 and the limit member 6, a roller structure is also arranged on the shaft column 61, and the roller can rotate relative to the shaft column 61, that is, the roller can rotate around the shaft column 61. When the rotating rail 4 rotates along the arrangement direction of the limit member 6, it rolls between the rollers, reducing the friction between the rotating rail 4 and the limit member 6, and the rollers can also press against the two sides of the rotating rail 4.

[0039] Among them, one side of the rotating rail 4 is close to the surface of the base plate 3, and a mounting seat 41 is provided on the opposite side of the rotating rail 4. In order to avoid the baffle 62 on the shaft column 61, the connection area between the mounting seat 41 and the rotating rail 4 needs to be smaller than the minimum distance between the two baffles 62 at the same radial position. Specifically, a smaller protrusion 42 can be provided on the rotating rail 4 to fix the mounting seat 41. The height of the protrusion 42 needs to exceed the height of the baffle 62, so as to avoid interference between the mounting seat 41 and the baffle 62. One side of the mounting seat 41 is fixedly connected to the rotating rail 4, and the opposite side is fixedly connected to the clamp head 2. Specifically, the mounting seat 41 is fixedly connected to the clamp housing 21 of the clamp head 2; Figure 3As shown, there are eight mounting seats 41 in total, and they are evenly spaced along the rail body of the rotating rail 4, also in a C-shaped arrangement, and the two clamp arms 22 of the clamp head 2 and the clamp housing 21 are also in a C-shape, so that each mounting seat 41 can be fixedly connected to the clamp housing 21, thereby improving the connection strength between the rotating rail 4 and the clamp head 2, and can effectively avoid the safety hazard caused by the clamp head 2 being thrown out due to the large centrifugal force when it rotates.

[0040] Since the rotating rail 4 is fixedly connected to the clamp head 2, when the rotating rail 4 rotates, the clamp head 2 will be driven to rotate together. It should be noted that the connection surface area between the mounting seat 41 and the clamp housing 21 is larger than the connection area between the mounting seat 41 and the rotating rail 4, which can effectively fix the clamp housing 21 on the rotating rail 4.

[0041] It should also be noted that the rotating rail 4 and the base plate 3 are arranged eccentrically, that is, the axis centerline position of the rotating rail 4 is not colinear with the axis centerline position of the base plate 3. In this embodiment, the eccentricity between the rotating rail 4 and the base plate 3 is designed to be 15 mm. Therefore, there is also an eccentricity of 15 mm between the clamp head 2 and the base plate 3, and when the clamp head 2 rotates relative to the base plate 3, it also rotates eccentrically. That is, when there is an electric wire inside the jaws of the clamp head 2, the eccentric rotation of the clamp head 2 relative to the base plate 3 can change the position of the electric wire relative to the inside of the jaws of the clamp head 2, thereby realizing continuous multi-point measurement, improving the measurement accuracy of the wireless current clamp, and avoiding the continuous swinging of the base plate 3 to adjust the position of the clamp head 2, which causes safety hazards.

[0042] It should also be noted that the rail body length of the rotating rail 4 is greater than the opening length of the base plate 3, so that when one end of the rotating rail 4 rotates away from the base plate 3 (that is, one end of the rotating rail 4 is located at the opening of the base plate 3), the other end of the rotating rail 4 still exists between the limit members 6 on the base plate 3. As the rotating rail 4 continues to rotate, the end of the rotating rail 4 will enter the base plate 3 from the other side of the opening of the base plate 3, thereby realizing a 360-degree circular rotation of the rotating rail 4 on the base plate 3, that is, the clamp head 2 can perform a 360-degree circular rotation to collect measurement data of the wire current within a 360-degree range.

[0043] The opening of the clamp head 2 is adapted to the opening of the rotating rail 4, and the opening of the clamp head 2 and the opening of the rotating rail 4 are kept in the same direction at any time. When the opening of the clamp head 2 is rotated to be aligned with the opening direction of the base plate 3, the wire can be placed in the jaws of the clamp head 2.

[0044] The two clamp arms 22 of the clamp head 2 are provided with guide arc surfaces 221, which are arranged on the side of the opening of the clamp arms 22 facing outward, and the clamp arms 22 are rotatably connected to the clamp housing 21. Under normal conditions, the two clamp arms 22 are in a closed state. When inserting a wire, the guide arc surfaces 221 on the two clamp arms 22 only need to be pushed forward toward the position where the wire is located, and the wire will squeeze the guide arc surfaces 221 on the two clamp arms 22, thereby pushing the two guide arc surfaces 221 apart and entering the inside of the jaws of the clamp head 2. Similarly, a guide inclined surface 222 is provided on one side of the clamp arm 22 located inside the jaws. When the wire is to be separated from the jaws, the clamp head 2 only needs to be pulled back so that the wire is squeezed on the guide inclined surface 222, and the two guide inclined surfaces 222 are pushed apart, and then separated from the jaws. Of course, in order to ensure that the two clamp arms 22 can be reset to a closed state in time, an elastic member should be provided on the clamp arm 22, which is a conventional design and will not be described in detail.

[0045] Two gears 5 are arranged on the base plate 3 and on one side where the rotating rail 4 is located. The gears 5 are rotationally connected to the base plate 3. The gears 5 are arranged on the outer diameter side close to the rotating rail 4, and an inner concave cavity 44 is arranged on the rotating rail 4. The inner concave cavity 44 covers the entire rail body length of the rotating rail 4 and is also arranged on the outer diameter side of the rotating rail 4. A plurality of meshing teeth 43 are arranged in the inner concave cavity 44. The meshing teeth 43 mesh with the gears 5 for transmission. When the gears 5 rotate, the rotating rail 4 also rotates through the meshing of the meshing teeth 43 and the gears 5, thereby realizing the rotation of the rotating rail 4.

[0046] Since the angle of the jaws of the clamp head 2 can be adjusted, the clamp head 2 can approach the wire from other directions, so it is not easy to touch the insulator, lightning arrester or angle iron next to the zinc oxide lightning arrester wire, ensuring that the clamp head 2 will not be in a high voltage state or directly burned.

[0047] A fixing portion 8 is also provided at the bottom of the base plate 3. The fixing portion 8 is used to connect the insulating rod and to lift the entire clamping structure of the arrester tester. The fixing portion 8 may be a threaded structure or a buckle structure.

[0048] A driving component 9 is provided on the base plate 3 and on the opposite side of the rotating rail 4. The driving component 9 is used to drive the gear 5 to rotate. Figure 5 As shown, an accommodating space 31 is provided on the base plate 3 and on the opposite side of the rotating rail 4. The accommodating space 31 is a circular arc-shaped groove structure. A transmission part 92 is provided at both ends of the accommodating space 31. The number of the transmission parts 92 is the same as the number of the gears 5, and the positions correspond. The transmission part 92 and the gear 5 are located on two opposite surfaces of the base plate 3. The transmission part 92 and the gear 5 are coaxially connected, so that when the transmission part 92 rotates, the gear 5 also rotates.

[0049] The transmission part 92 is a columnar structure, and a synchronous belt 93 is provided on the transmission part 92. A driving device 91 is also provided in the middle of the accommodating interval 31. The driving device 91 can adopt a small driving motor. The driving motor is also connected to a transmission part 92 in the middle position of the accommodating interval 31. When the driving motor rotates to drive the transmission part 92 to rotate, the synchronous belt 93 will rotate, driving the transmission parts 92 on both sides to rotate together, thereby realizing the rotation of the gear 5.

[0050] It should be noted that in order to ensure that the synchronous belt 93 can transmit normally, a toothed engagement form can be selected between the transmission part 92 and the synchronous belt 93, and since the accommodating interval 31 is an arc-shaped structure, a tensioning wheel (not shown in the figure) is also provided in the recessed portion of the accommodating interval 31 to tighten the synchronous belt 93, so that the synchronous belt 93 can be in a taut state, thereby ensuring normal transmission between the transmission part 92 and the synchronous belt 93.

[0051] It should also be noted that a sealing cover 7 can be provided at the notch of the accommodating interval 31 to cover the accommodating interval 31 and protect the internal driving component 9, and a control module 10 is also provided on the base plate 3 to control the clamping structure of the lightning arrester tester by remote control, thereby greatly improving the practical convenience of the clamping structure of the lightning arrester tester.

[0052] When using the clamp structure of the arrester tester, it is only necessary to connect the fixing part 8 and the insulating rod, then lift the wireless current clamp to the specified position, and then insert the wire into the inside of the jaws. At this time, the driving component 9 drives the gear 5 to rotate through the control module 10, and the gear 5 drives the rotating rail 4 to rotate, thereby driving the clamp head 2 to rotate, and the clamp head 2 rotates eccentrically around the base plate 3, thereby changing the relative position of the wire inside the jaws. During the whole process, the base plate 3 only needs to remain stationary, that is, the insulating rod remains stationary, thereby achieving the effect of fixed-position multi-point measurement.

Claims

1. A lightning arrester tester clamping structure, characterized in that: The invention comprises a pliers head, wherein the pliers head comprises a pliers shell, a rotating assembly is arranged on the pliers shell, the rotating assembly comprises an annular base plate with an opening, an annular rotating rail with an opening is eccentrically arranged on the base plate, and the rotating rail is fixedly connected to the pliers shell.

2. The clamp structure of a lightning arrester tester according to claim 1, characterized in that: The rotating rail and the base plate are in a C shape, and the opening of the rotating rail is consistent with the direction of the jaws of the clamp head.

3. The clamp structure of a lightning arrester tester according to claim 1, characterized in that: The base plate is also provided with a receiving area, and a driving component is provided in the receiving area, and the driving component is linked with the rotating rail.

4. The clamp structure of a lightning arrester tester according to claim 3, characterized in that: The rotating rail is provided with meshing teeth in the circumferential direction, and the base plate is also provided with gears which are transmission-connected with the meshing teeth.

5. The clamp structure of a lightning arrester tester according to claim 4, characterized in that: The driving component further comprises a driving device and a transmission part, wherein the driving device is connected to the transmission part, the transmission part is transmission-connected to the gear, and the transmission part and the gear are respectively arranged on both sides of the base plate.

6. A lightning arrester tester clamp structure according to any one of claims 1 to 5, characterized in that: The pliers head also includes a pliers arm, which is rotatably connected to the pliers housing and has a guiding arc surface.

7. A lightning arrester tester clamp structure according to any one of claims 1 to 5, characterized in that: The eccentricity between the base plate and the rotating rail is 10 mm to 20 mm.

8. A lightning arrester tester clamp structure according to any one of claims 1 to 5, characterized in that: A plurality of limiting members are arranged on the base plate and on both sides of the rotating rail, and the limiting members are arranged in a ring-like arrangement at intervals.

9. The clamp structure of a lightning arrester tester according to claim 8, characterized in that: The limiting member comprises a shaft column and a baffle plate, and a roller is rotatably connected to the shaft column.

10. A lightning arrester tester clamp structure according to any one of claims 1 to 5, characterized in that: The base plate is also provided with a fixing part.

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