A docking device for insulator zero value tester

Abstract

The present invention provides a docking device for an insulator zero value tester, belonging to the technical field of insulator zero value testers. A main unit and an insulating rod, and the insulating rod and the main unit are connected via a docking piece; the docking piece includes a docking platform fixedly connected to the bottom of the main unit, a docking column screwed to the insulating rod, and a groove reserved on the docking platform. The docking piece also includes: a pair of stop platforms movably arranged in groove A; a traction platform 1 movably arranged in groove B; a fastening unit further includes a restraining rod, a right-angle piece, and a spiral beryllium copper wire B, the right-angle piece including a vertical end and a horizontal end. The present invention solves the problem that the main unit and the insulating rod of the existing insulator zero value tester are connected by bolts, and the bolts need to be repeatedly twisted during assembly and disassembly, which is time-consuming and labor-intensive, reduces detection efficiency, and the repeated twisting may cause the bolts to slip, thereby causing the tester to be unable to be used normally, greatly reducing its service life.

Description

Technical Field

[0001] The invention belongs to the technical field of insulator zero value testers, and in particular relates to a docking device used for insulator zero value testers. Background Art

[0002] Line insulators are the most widely used electrical equipment in power systems. Porcelain insulators operating in transmission lines lose their insulation properties under the influence of long-term mechanical forces and electric fields, becoming zero-value insulators. The appearance of zero-value insulators increases the voltage on other normal insulators, making lightning more likely to occur under high voltage and adverse weather conditions, directly affecting the safe operation of the power system. Currently, porcelain insulator testing mainly uses spark gap discharge testing, small ball discharge method, voltage distribution method, ultrasonic method, infrared imaging method, ultraviolet imaging method, ultraviolet pulse detection method, electric field measurement method, radio wave method, and insulation resistance method. When conducting testing, we usually use an insulator zero-value tester for testing.

[0003] Prior art CN105676090A discloses a porcelain insulator live zero-value tester, comprising a main unit and an insulating rod, the main unit and the insulating rod being connected by fixing bolts. The main unit and the insulating rod of this insulator zero-value tester are connected by bolts, requiring repeated twisting of the bolts during assembly and disassembly, which is time-consuming and labor-intensive, reducing detection efficiency. Furthermore, repeated twisting can cause the bolts to strip, which can render the tester inoperable and significantly reduce its service life. Summary of the Invention

[0004] The present invention provides a docking device for an insulator zero value tester, which aims to solve the problem that the main unit and the insulating rod of the existing insulator zero value tester are connected by bolts, and the bolts need to be repeatedly twisted during assembly and disassembly, which is time-consuming and labor-intensive, reduces the detection efficiency, and the repeated twisting may cause the bolts to slip, thereby causing the tester to be unable to be used normally, greatly reducing the service life.

[0005] The embodiment of the present invention provides a docking device for an insulator zero value tester, wherein a main unit and an insulating rod, and the insulating rod and the main unit are connected via a docking piece;

[0006] The docking parts include a docking platform fixed to the bottom of the main unit, a docking column screwed to the insulating rod, and grooves reserved on the docking platform. The grooves include groove A and groove B. A stop is reserved on the outer surface of the docking column. The docking parts also include:

[0007] A pair of stop platforms are movably installed in the channel A; a traction platform is movably installed in the channel B and is connected to each stop platform through a traction bar;

[0008] The fastening unit includes a movable platform and a spiral beryllium copper wire A. The movable platform is movably mounted on the traction platform 1, and the spiral beryllium copper wire A is mounted between the movable platform and the traction platform.

[0009] The fastening unit further includes a restraining rod, a right-angle piece, and a spiral beryllium copper wire B. The right-angle piece includes a vertical end and a horizontal end. The restraining rod passes through the vertical end and is fixed to the movable platform. The right-angle piece is movably mounted on the restraining rod. The spiral beryllium copper wire B is hooped to the restraining rod and is mounted between one side of the restraining rod and the vertical end of the right-angle piece.

[0010] The traction platform 1 can be moved along the track between the fastening position and the disassembling position. When the traction platform 1 is at the disassembling position, the lower end of the lateral end is movably connected to the groove B, and the edge of the lateral end is in close contact with the wall of the storage space of the traction platform 1 for storing the movable platform.

[0011] When the traction platform is in the fastening position, a pair of stop platforms fasten the connecting columns, and the horizontal ends move downward under the cooperation of the spiral beryllium copper wire A. The side walls of the horizontal ends are tightly attached to the outer surface of the connecting platform, and under the cooperation of the spiral beryllium copper wire B, the gap between the right-angle piece and the connecting platform surface is automatically adjusted to prevent the stop platform from unfolding in the reverse direction.

[0012] The stop platform includes a guiding end and a stopping end. The guiding end is located on the side farther from the connecting column. The side wall and the surface of the groove A are movably attached to each other to guide and restrain the end from swinging. There is a gap between the side wall of the stop end and the side wall of the groove A. The contour of the stop end and the stop opening on the connecting column match each other.

[0013] Furthermore, the fastening unit also includes a button, which is movably installed on the traction platform 1. The button and the movable platform are connected via the traction platform 2. The button pulls the movable platform to move via the traction platform 2 to cancel the fastening of the movable platform to the connecting column.

[0014] Furthermore, a pair of restraining ends extending inward and facing each other are provided at the mouths of the upper ends of grooves A and B, and a restraining wall cooperating with the restraining ends is provided on the stop platform, which can restrain and tighten the connecting column in the vertical direction.

[0015] Furthermore, one side of the restraint rod is connected to the movable table with a thread, and the other side of the restraint rod is reserved with a thread opening and is connected to the nut. The spiral beryllium copper wire B is connected to the restraint rod and is tightly attached between the nut and the vertical end. By changing the position of the nut on the restraint rod, the initial compression effect of the spiral beryllium copper wire B is changed.

[0016] Furthermore, a snap-fitting opening for assembling the connecting column is reserved on the connecting platform, and the groove A and the groove B are mirror-arranged around the snap-fitting opening and are connected to each other.

[0017] Furthermore, the docking piece also includes an anti-rotation unit installed between the connecting platform and the insulating rod, the anti-rotation unit includes a plurality of engaging teeth A fixedly connected to the wall surface of the connecting platform close to the insulating rod and a plurality of engaging teeth B fixedly connected to the wall surface of the end of the insulating rod close to the connecting platform. The engaging teeth A and the engaging teeth B are arranged in a circumferential direction and are staggered and engaged with each other.

[0018] The beneficial effects of the present invention are:

[0019] The present invention can quickly disassemble and assemble the main unit and the insulating rod through the installation of the docking parts, without the need to repeatedly twist the screw for assembly, thereby greatly improving the test efficiency. At the same time, it can also avoid the repeated twisting that causes the screw to slip, which causes the insulator zero value tester to be unable to be used normally, thereby greatly improving the service life of the insulator zero value tester.

[0020] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of a first-view stereoscopic structure of an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of a second perspective three-dimensional structure of an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the three-dimensional structure of a docking station according to an embodiment of the present invention;

[0025] Figure 4 For the embodiment of the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0026] Figure 5 This is a schematic diagram of the internal structure of a traction platform according to an embodiment of the present invention;

[0027] Figure 6 Schematic diagram of the cross-sectional structure of the traction platform according to an embodiment of the present invention Figure 1 ;

[0028] Figure 7 A schematic diagram of a storage structure of a movable platform according to an embodiment of the present invention;

[0029] Figure 8 Schematic diagram of the movable platform lowering structure of the embodiment of the present invention Figure 1 ;

[0030] Figure 9 Schematic diagram of the cross-sectional structure of the traction platform, movable platform and corresponding trenches according to an embodiment of the present invention, wherein (m) is a schematic diagram of the cross-sectional structure of the traction platform and trench A, and (n) is a schematic diagram of the cross-sectional structure of the movable platform and trench B;

[0031] Figure 10 This is a schematic structural diagram of the stop platform and the groove A according to an embodiment of the present invention;

[0032] Figure 11 Schematic diagram of the movable platform lowering structure of the embodiment of the present invention Figure 2 ;

[0033] Figure 12 Schematic diagram of the cross-sectional structure of the traction platform according to an embodiment of the present invention Figure 2 ;

[0034] Figure 13 Schematic diagram of the cooperation structure of the right-angle piece and the docking platform according to an embodiment of the present invention;

[0035] Figure numerals: 1, main engine; 2, insulating rod; 3, docking piece; 31, stop platform; 311, guide end; 312, stop end; 32, traction platform 1; 33, traction bar; 34, connecting platform; 341, groove A; 3411, tail end; 3412, head end; 3413, restraining end; 3414, restraining wall; 34141, vertical wall; 34142, horizontal wall; 342, groove B; 35, connecting column; 351, stop opening; 36, fastening Unit; 361, movable table; 362, spiral beryllium copper wire A; 363, spiral beryllium copper wire B; 364, traction table 2; 3641, rotating roller; 365, restraint rod; 366, right-angle piece; 3661, vertical end; 3662, horizontal end; 367, button; 3671, protrusion; 368, nut; 37, assembly table; 38, engaging mouth; 39, gap; 310, anti-rotation unit; 3101, bite tooth A; 3102, bite tooth B. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1

[0038] Reference Figures 1-13 The embodiment of the present invention provides a docking device for an insulator zero value tester, wherein a host 1 and an insulating rod 2 are connected, and the insulating rod 2 and the host 1 are connected via a docking piece 3.

[0039] By installing the docking piece 3, the main unit 1 and the insulating rod 2 can be quickly disassembled and assembled without repeatedly twisting the screw for assembly, which greatly improves the test efficiency. At the same time, it can also prevent the repeated twisting from causing the screw to slip and causing the insulator zero value tester to be unable to be used normally, thereby greatly improving the service life of the insulator zero value tester.

[0040] Reference Figure 3-Figure 10 The docking piece 3 includes a pair of stop platforms 31, a traction platform 32, a connecting platform 34 and a connecting column 35. The connecting platform 34 is connected to the bottom of the main unit 1. The connecting column 35 is screwed to one side of the end of the insulating rod 2. A stop opening 351 is reserved on the outer surface of the connecting column 35. The other side of the connecting column 35 passes through the connecting platform 34 and is fixedly connected to the knob. The upper wall of the connecting platform 34 is reserved with grooves A341 and B342. The extension line of groove A341 and the extension line of groove B342 are The lines are perpendicular to each other, and the stop platform 31 is movably installed in the groove A341. The groove A341 includes a tail end 3411 and a head end 3412 that are arranged in a mirror image. The tail end 3411 and the head end 3412 are respectively opposite to the two sides of the knob. Stop platforms 31 are installed in the tail end 3411 and the head end 3412. A pair of stop platforms 31 is used to fasten the connecting column 35 between the tail end 3411 and the head end 3412. The stop platform 31 and the stop opening 351 on the connecting column 35 cooperate with each other.

[0041] Reference Figure 3 and Figure 4 Pulling platform 1 32 is movably mounted in channel B342. The movement of pulling platform 1 32 drives the stop platform 31 to tighten or loosen the connecting post 35. Pulling bars 33 are mounted on the upper ends of pulling platform 1 32 and the stop platform 31. The two sides of the pulling bars 33 are screwed to the stop platforms 31 and 32, respectively, forming a transmission mechanism. When pulling platform 1 32 moves in channel B342, pulling platform 1 32 moves outward, and the pair of stop platforms 31, pulled by pulling platform 1 32, move closer together to tighten the connecting post 35. When pulling platform 1 32 moves inward, the pair of stop platforms 31, pulled by pulling platform 1 32, release the fastening of the connecting post 35.

[0042] Reference Figure 6The fastening unit 36 ​​includes a movable platform 361 and a spiral beryllium copper wire A362. A storage space for the movable platform 361 and the spiral beryllium copper wire A362 is reserved within the traction platform 1 32. The movable platform 361 and traction platform 1 32 are movably connected, and the spiral beryllium copper wire A362 is connected to the movable platform 361 and the inner surface of the storage space on both sides. When the traction platform 1 32 is in the disassembled position, the movable platform 361 is stored in the traction platform 1 32, and the spiral beryllium copper wire A362 is shortened. To ensure smooth movement of the traction platform 1 32, the bottom of the movable platform 361 is polished. The movable platform 361 is movably connected to the lower end of the groove B342 within the groove B342.

[0043] Reference Figure 6 and Figure 8 When the traction platform 1 32 is in the tightened position, the lower end of the movable platform 361, in cooperation with the spiral beryllium copper wire A362, moves out of the traction platform 1 32. The movable platform 361 moves out of the area of ​​the traction platform 1 32 and cooperates with the connection platform 34 to achieve the constraint. When in the tightened position, the movable platform 361 is in close contact with the outer surface of the connection platform 34 to achieve the constraint purpose. When the stop platform 31 is forced to expand toward the outside of the connection platform 34, the traction platform 1 32 moves outward in cooperation with the traction bar 33. The movable platform 361, in close contact with the outer circumference of the connection platform 34, restrains the movement of the traction platform 1 32, thereby restraining the stop platform 31 and tightening the connection column 35.

[0044] Reference Figure 3-Figure 6 The fastening unit 36 ​​further includes a spiral beryllium copper wire B363 and an assembly platform 37 located on the outer circumference of the connecting platform 34. The spiral beryllium copper wire B363 includes a tail spiral beryllium copper wire and a head spiral beryllium copper wire, each of which is installed in the tail end 3411 and the head end 3412. The tail spiral beryllium copper wire and the head spiral beryllium copper wire are connected to the corresponding stop platforms 31 and assembly platform 37 on both sides. When disassembling the connecting column 35, the pulling platform 1 32 moves inward, and the pair of stop platforms 31 respectively compress the tail spiral beryllium copper wire and the head spiral beryllium copper wire, shortening them to facilitate the assembly and fastening of the connecting column 35.

[0045] As traction platform 1 32 moves from the disassembly position toward the tightening position, the pair of stop platforms 31 move toward each other. When traction platform 1 32 is in the tightening position, the lower end of movable platform 361 moves downward in cooperation with spiral beryllium copper wire A362, closely contacting the outer circumference of connecting platform 34, thereby achieving the purpose of stopping and preventing stop platform 31 from moving in the opposite direction. Furthermore, the tail spiral beryllium copper wire and the head spiral beryllium copper wire apply pressure to connecting post 35, and the pressure is adjusted according to the size of connecting post 35 to prevent the gap between stop platform 31 and connecting post 35 caused by friction between the parts from affecting the tightening effect.

[0046] Reference Figure 6-Figure 8 The fastening unit 36 ​​also includes a button 367, which is movably mounted on the first traction platform 32. The button 367 and the movable platform 361 are connected via the second traction platform 364. With the cooperation of the second traction platform 364, pressing the button 367 downward pulls the movable platform 361 toward the first traction platform 32, releasing the fastening of the movable platform 361 to the connecting post 35. The two sides of the second traction platform 364 fit into the U-shaped openings at the bottom of the button 367 and the movable platform 361. The second traction platform 364 is screwed into the first traction platform 32, achieving a linkage effect. The downward pressure of the button 367 is converted into an upward pull of the movable platform 361. When the user presses the button 367 downward, the second traction platform 364 rotates about its axis, which in turn pulls the movable platform 361 and compresses the spiral beryllium copper wire A362 to shorten, allowing the first traction platform 32 to be retracted into the first traction platform 32. Furthermore, due to the linkage between button 367 and movable platform 361, button 367 can automatically move upward when movable platform 361 moves downward in coordination with the spiral beryllium copper wire A362. To prevent button 367 from popping out of traction platform 1 32, a restraining protrusion 3671 is fixed to the side wall of button 367. Protrusion 3671 cooperates with the recess in traction platform 1 32 that receives button 367. Rotating rollers 3641 are attached to both sides of traction platform 2 364. The button 367 and movable platform 361 are each in close contact with their respective rotating rollers 3641, reducing the obstruction between traction platform 2 364 and traction platform 1 32 and movable platform 361. This results in smoother movement when button 367 is pressed against movable platform 361.

[0047] Reference Figure 9 and Figure 10 A pair of restraining ends 3413 extending inward and facing each other are installed at the mouths of the upper ends of groove A341 and groove B342, and a restraining wall 3414 cooperating with the restraining end 3413 is installed on the stop platform 31. The restraining wall 3414 includes a vertical wall 34141 and a horizontal wall 34142. The side wall of the restraining end 3413 and the vertical wall 34141 are movably connected, and the lower wall of the restraining end 3413 and the horizontal wall 34142 are movably connected. Both the traction platform 1 32 and the stop platform 31 can be movably installed in the corresponding grooves, and the restraining end 3413 can restrain the stop platform 31 and the traction platform 1 32 in the vertical direction to achieve the purpose of guidance and assist in tightening; and through the installed restraining end 3413 and the transverse wall 34142, and the movable tightening form of the stop platform 31, the fastened connecting column 35 can be restrained in the vertical direction again to prevent the connecting column 35 from being moved out due to external forces during assembly, so as to prevent the connecting column 35 from being separated and damaged.

[0048] Reference Figure 9In the figure (m) and (n), the corners of the traction platform 1 32, the stop platform 31, and the corresponding grooves are all arched, allowing the stop platform 31 and traction platform 1 32 to move more smoothly within the groove. Furthermore, the arched surface of the stop platform 31 and the arched surface inside the stop opening 351 of the connecting post 35 match each other, ensuring a tight fit between the stop platform 31 and the connecting post 35 when engaged, thereby enhancing the secure fastening of the stop platform 31 to the connecting post 35. If the area where the stop platform 31 and the connecting post 35 contact each other does not completely contact the stop opening 351 of the connecting post 35, the secure fastening of the stop platform 31 to the connecting post 35 will be weakened.

[0049] Reference Figure 10 The stop platform 31 includes a guide end 311 located farther from the connecting post 35 and a stop end 312 that cooperates with the stop opening 351 on the connecting post 35. The surface of the guide end 311 flexibly contacts the surface of the groove A341, while the surface of the stop end 312 is separated from the surface of the groove A341. As the stop platform 31 moves within the groove A341, to ensure guidance and prevent rotation, the structure of the stop platform 31 is constrained by the surface of the groove, preventing it from interfacing with the structure of the stop opening 351 on the connecting post 35, weakening the secure fastening. The stop platform 31 is divided into a guide end 311 and a stop end 312. The surface of the stop end 312 cooperates with the surface of the groove A341, allowing the stop end 312, which cooperates with the stop opening 351 on the connecting post 35, to move away from the constraints of the groove, ensuring its tight engagement with the stop opening 351. The guide end 311 then flexibly engages with the surface of the groove, thereby guiding the stop platform 31 and ensuring its straight movement. It also prevents rotation, resists the upward force of the connecting post 35, and prevents displacement of the stop platform 31. Furthermore, because the stop end 312 is separated from the surface of the groove A341, during the movement of the stop platform 31, the obstruction between the groove and the stop end 312 is concentrated at the guide end 311, reducing the wear of the stop end 312 caused by its interaction with the groove, thus ensuring the precise interaction between the stop platform 31 and the connecting post 35 during long-term operation.

[0050] Example 2

[0051] Reference Figure 12 and Figure 13 The difference from the first embodiment lies in the different orientation of the spiral beryllium copper wire B363. Furthermore, the fastening unit 36 ​​further includes a restraining rod 365 and a right-angle piece 366 located at the lower end of the movable platform 361. The right-angle piece 366 includes a vertical end 3661 and a horizontal end 3662. The restraining rod 365 passes through the vertical end 3661 and is fixed to the movable platform 361. The right-angle piece 366 is movably mounted on the restraining rod 365. The spiral beryllium copper wire B363 is hooped onto the restraining rod 365 and mounted between one side of the restraining rod 365 and the vertical end 3661 of the right-angle piece 366.

[0052] Reference Figure 11-13 When traction platform 1 32 is in the disassembled position, the lower end of transverse end 3662 is movably connected to groove B342, and the edge of transverse end 3662 is in close contact with the wall of the storage space of traction platform 1 32 that accommodates movable platform 361. When traction platform 1 32 is moved to the fastened position, it moves downward in conjunction with the spiral beryllium copper wire A362, and the edge of transverse end 3662 is in close contact with the outer surface of connecting platform 34, preventing the stop platform 31 from moving backward. Furthermore, spiral beryllium copper wire B363 continuously applies rightward pressure to right-angled piece 366. In conjunction with spiral beryllium copper wire B363, right-angled piece 366 automatically adjusts the gap 39 between right-angled piece 366 and the surface of connecting platform 34, ensuring close contact with the surface of connecting platform 34 and eliminating the gap 39 between stop platform 31 and connecting post 35 caused by wear and tear during use. When one side of the stop platform 31 and the connecting post 35 are in close contact, a gap 39 is left to ensure that the stop platform 31 and the connecting post 35 are in close contact and secure. Compared to normal operation, the travel of the traction platform 1 32 in the groove B 342 is greater, resulting in a gap 39 between the movable platform 361 and the outer surface of the connecting platform 34 after it moves out. If this gap 39 cannot be eliminated, a separation area will appear between the movable platform 361, the right-angle piece 366, and the outer surface of the connecting platform 34, and the movable platform 361 will not be able to securely secure the connecting post 35. The spiral beryllium copper wire B363 installed in Example 1 cooperates with the assembly table 37 to provide a constant pressure effect toward the stop table 31. Although this method can eliminate the gap between the stop table 31 and the connecting column 35 to achieve the purpose of tightening, a gap 39 is still left between the outer surface of the movable table 361 and the connecting table 34, which weakens the restraining effect of the movable table 361. Through the installation of the right-angle piece 366 and the restraining rod 365, the right-angle piece 366 can automatically fill the gap 39 through the cooperation of the spiral beryllium copper wire B363, ensuring that when the gap 39 appears, it can still play a double tightening role.

[0053] To prevent right-angle piece 366 from rotating around restraint rod 365 during tightening, vertical end 3661 is movably connected to restraint rod 365. A pair of mirror-image slots are provided on the outer surface of restraint rod 365, running the length of restraint rod 365. A pair of mirror-image restraint bars are fixedly attached to the slots on vertical end 3661 for receiving restraint rod 365. The restraint bars are movably mounted within the slots. When right-angle piece 366 is assembled on restraint rod 365, the restraint bars engage within the slots, preventing right-angle piece 366 from rotating around restraint rod 365 and preventing it from interfering with its linear movement, thus ensuring that right-angle piece 366 remains secure during tightening.

[0054] Reference Figure 12 and Figure 13One side of the restraining rod 365 is threaded onto the movable platform 361, while the other side of the restraining rod 365 has a reserved thread opening and is threaded onto a nut 368. A spiral beryllium copper wire B363 is tightly attached between the nut 368 and the right-angle piece 366. The nut 368 is rotated to move the nut 368 toward the right-angle piece 366. Because the right-angle piece 366 is in contact with the wall of the storage space of the traction platform 32 that receives the movable platform 361 when disassembled, and in contact with the outer surface of the connecting platform 34 when tightened, the nut 368 can be rotated to change the initial shortening length of the spiral beryllium copper wire B363, thereby changing the initial compressive force on the right-angle piece 366. This method can achieve a change in the initial shortening length of the spiral beryllium copper wire B363, thereby changing the compressive force between the right-angle piece 366 and the outer surface of the connecting platform 34, and the tightening force of the stop platform 31 on the connecting column 35 when tightened. Furthermore, when the function of the spiral beryllium copper wire B363 is weakened due to long-term work, the user can adjust the pressure effect of the spiral beryllium copper wire B363 on the right-angle piece 366 by changing the shortened length of the spiral beryllium copper wire B363.

[0055] Reference Figure 5 The connecting platform 34 is provided with a snap-fitting opening 38 for assembling the connecting column 35. The groove A 341 and the groove B 342 are arranged in a mirror image around the snap-fitting opening 38 and are connected to each other. This facilitates the snap-fitting of the connecting column 35 into the snap-fitting opening 38, thereby allowing the main unit 1 and the insulating rod 2 to be connected.

[0056] Reference Figure 1 The docking piece 3 also includes an anti-rotation unit 310 installed between the docking platform 34 and the insulating rod 2. The anti-rotation unit 310 includes a plurality of engaging teeth A3101 fixedly connected to the wall surface of the docking platform 34 close to the insulating rod 2 and a plurality of engaging teeth B3102 fixedly connected to the wall surface of the end of the insulating rod 2 close to the docking platform 34. The engaging teeth A3101 and the engaging teeth B3102 are arranged in a circumferential direction and are staggered and engaged with each other. When assembling the main unit 1 and the insulating rod 2, adjust the angle of the main unit 1, pass the docking post 35 through the engaging opening 38, and the engaging teeth A3101 and the engaging teeth B3102 engage with each other. Turn the knob to make the stop opening 351 on the docking post 35 face the stop platform 31, and then use the stop platform 31 to stop the docking post 35, thereby preventing the main unit 1 and the insulating rod 2 from relative movement after assembly, thereby ensuring the normal use of the insulator zero value tester.

[0057] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A docking device for an insulator zero value tester, a main unit and an insulating rod, characterized in that: The insulating rod is connected to the host via a docking piece; The docking parts include a docking platform fixed to the bottom of the main unit, a docking column screwed to the insulating rod, and grooves reserved on the docking platform. The grooves include groove A and groove B. A stop is reserved on the outer surface of the docking column. The docking parts also include: A pair of stop platforms are movably installed in the channel A; a traction platform is movably installed in the channel B and is connected to each stop platform through a traction bar; The fastening unit includes a movable platform and a spiral beryllium copper wire A. The movable platform is movably mounted on the traction platform 1, and the spiral beryllium copper wire A is mounted between the movable platform and the traction platform. The fastening unit further includes a restraining rod, a right-angle piece, and a spiral beryllium copper wire B. The right-angle piece includes a vertical end and a horizontal end. The restraining rod passes through the vertical end and is fixed to the movable platform. The right-angle piece is movably mounted on the restraining rod. The spiral beryllium copper wire B is hooped to the restraining rod and is mounted between one side of the restraining rod and the vertical end of the right-angle piece. The traction platform 1 can be moved along the track between the fastening position and the disassembling position. When the traction platform 1 is at the disassembling position, the lower end of the lateral end is movably connected to the groove B, and the edge of the lateral end is in close contact with the wall of the storage space of the traction platform 1 for storing the movable platform. When the traction platform is in the fastening position, a pair of stop platforms fasten the connecting columns, and the horizontal ends move downward under the cooperation of the spiral beryllium copper wire A. The side walls of the horizontal ends are tightly attached to the outer surface of the connecting platform, and under the cooperation of the spiral beryllium copper wire B, the gap between the right-angle piece and the connecting platform surface is automatically adjusted to prevent the stop platform from unfolding in the reverse direction. The stop platform includes a guiding end and a stopping end. The guiding end is located on the side farther from the connecting column. The side wall and the surface of the groove A are movably attached to each other to guide and restrain the end from swinging. There is a gap between the side wall of the stop end and the side wall of the groove A. The contour of the stop end and the stop opening on the connecting column match each other.

2. The docking device for an insulator zero value tester according to claim 1, characterized in that: The fastening unit also includes a button, which is movably mounted on the traction platform 1. The button and the movable platform are connected via the traction platform 2. The button pulls the movable platform to move via the traction platform 2 to cancel the fastening of the movable platform to the connecting column.

3. The docking device for an insulator zero value tester according to claim 1, characterized in that: A pair of restraining ends extending inward and facing each other are installed at the mouths of the upper ends of grooves A and grooves B, and a restraining wall cooperating with the restraining ends is installed on the stop platform, which can restrain and tighten the connecting column in the vertical direction.

4. The docking device for an insulator zero value tester according to claim 1, characterized in that: One side of the restraint rod is connected to the movable table with a thread, and the other side of the restraint rod is reserved with a thread opening and is threaded to the nut. The spiral beryllium copper wire B is connected to the restraint rod and is tightly attached between the nut and the vertical end. By changing the position of the nut on the restraint rod, the initial compression effect of the spiral beryllium copper wire B can be changed.

5. The docking device for an insulator zero value tester according to claim 1, characterized in that: A snap-fitting opening for assembling the connecting column is reserved on the connecting platform, and the groove A and the groove B are mirror-arranged around the snap-fitting opening and are connected to each other.

6. The docking device for an insulator zero value tester according to claim 1, characterized in that: The docking piece also includes an anti-rotation unit installed between the connecting platform and the insulating rod. The anti-rotation unit includes a plurality of engaging teeth A fixedly connected to the wall surface of the connecting platform close to the insulating rod and a plurality of engaging teeth B fixedly connected to the wall surface of the end of the insulating rod close to the connecting platform. The engaging teeth A and the engaging teeth B are arranged in a circumferential direction and are interlaced and engaged with each other.

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