Lightning arrester live-line tester and use method thereof

Abstract

The invention discloses a lightning arrester live-line tester and a use method thereof, and belongs to the technical field of power grid test tools, the lightning arrester live-line tester comprises a columnar shell, a clamping groove is formed in the side part of the shell, a tightening device is arranged at one end of the shell and inside the shell, a top shell is arranged at the other end of the shell, the top shell is communicated with the shell, and a clamping groove is formed in the clamping groove. And a transmission device which is driven along the axial direction of the shell is arranged in the top shell. The use method comprises the following steps: S1, preparing a connecting rod and a plurality of mounting rods; s2, a mounting rod is placed in the shell from a clamping groove, then a connecting rod is placed in from the upper portion of the top shell, and the connecting rod is located between the pressing wheel and the driving wheel and abuts against the mounting rod in the shell; s3, the first driving device is started, so that the mounting rod is connected with the connecting rod; and then the second driving device is started, so that the mounting rod and the connecting rod are lifted upwards together. According to the scheme, rapid assembly and lifting of the lightning arrester tester are realized, and the operation safety is improved.

Description

Technical Field

[0001] The invention relates to a power grid maintenance tool and a use method thereof, and more particularly to a lightning arrester live tester and a use method thereof. Background Art

[0002] The arrester tester is generally divided into two parts: the main unit and the clamp head. The clamp head is raised to the cable through the insulating rod, and the clamp head is controlled and data is transmitted wirelessly. When the clamp head is used for live testing of high-voltage lines, it should be noted that the clamp head cannot shake after being clamped, and shaking will cause inaccurate measurement results. The clamp head cannot touch the arrester, insulator and angle iron during measurement. After touching, it will not only cause inaccurate measurement, but also cause serious burnout of the instrument. In actual use, since most insulating rods are separate, they need to be installed section by section. After installation, the staff will hold the clamp head and clamp the cable to be tested. After the clamp head is clamped, the staff needs to maintain this posture and avoid shaking as much as possible. It is also necessary to avoid contact with structures such as arresters, insulators and angle irons. This is too demanding for the staff and too difficult to implement.

[0003] For example: Chinese patent announcement number CN216622545U, announcement date May 27, 2022, the name of the utility model is an insulated telescopic clamp-type lightning arrester test device, the application discloses a test device, including a fixed plate, the upper surface of the fixed plate is connected to a tester, the interior of the fixed plate is fixedly connected to an electric telescopic rod, the telescopic end of the electric telescopic rod is fixedly connected to a slider, the upper surface of the slider is hinged with a positioning rod, and the front of the positioning rod is rotatably connected to a movable rod through a positioning bolt. This solution can realize the telescopic extension of the lightning arrester test device; however, this solution is not only complex in structure, but also has limitations in use, unstable use, and excessive volume. Summary of the invention

[0004] The present invention overcomes the problem that the existing arrester test device is too difficult to implement, and provides an arrester live tester and a method for using the same. The scheme can realize the automatic assembly of the arrester tester and the lifting effect of the arrester tester, thereby stably realizing the testing work.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a lightning arrester live tester, comprising a cylindrical shell, a slot is provided on the side of the shell, a tightening device is provided at one end of the shell and inside the shell, a top shell is provided at the other end of the shell, the top shell is connected to the shell, and a transmission device driven along the axial direction of the shell is provided inside the top shell. In this solution, the slot inside the shell is used to place the installation rod, the tightening device in the shell can drive the installation rod to rotate axially, and the connecting rod is located in the top shell. Through the rotation of the installation rod, the installation rod and the connecting rod can be connected together to form an insulating rod as a whole; in addition, the transmission device inside the top shell can lift the insulating rod, and the clamp head is extended to the cable by lifting the insulating rod. As long as the installation rod is continuously placed in the slot, the insulating rod can be continuously lengthened to reach a specified height. The transmission device can also stop the insulating rod at any position to complete the test.

[0006] Preferably, the housing is provided with a mounting groove for accommodating the tightening device, the mounting groove is communicated with the clamping groove, the tightening device includes a moving block extending from the mounting groove to the clamping groove, and an elastic member connected to the moving block is provided in the mounting groove. The moving block can move between the mounting groove and the clamping groove, and plays a role of fixing, lifting, and limiting the mounting rod inside the clamping groove. The elastic member can lift the moving block, so that the mounting rod is subjected to axial force and is limited and fixed.

[0007] Preferably, the tightening device further comprises a first driving device, a receiving slot for receiving the first driving device is provided in the moving block, a rotating disk is provided at the output end of the first driving device, and the rotating disk is located in the slot. The first driving device may be a servo motor, the rotating disk is located in the slot and carries the mounting rod, the first driving device drives the rotating disk to rotate, and then drives the mounting rod to rotate, so as to realize the connection between the mounting rod and the connecting rod.

[0008] Preferably, the transmission device includes a rolling mechanism, and the rolling mechanism includes a hinged plate, one end of the hinged plate is hinged to the top shell, one end of the hinged plate is provided with a pressure wheel, and the hinged plate is also provided with a reset member. The hinged plate can swing relative to the top shell, and the pressure wheel can produce lateral extrusion on the rod (connecting rod or insulating rod) inside the top shell, which can limit the insulating rod on the one hand, and on the other hand, can also produce greater vertical friction force on the rod, thereby lifting the rod. The reset member can keep the hinged rod restored to its initial state and promote the pressure wheel to produce an extrusion effect on the rod.

[0009] Preferably, the transmission device further comprises a second driving device, the output end of which is provided with a driving wheel. The second driving device may also be a servo motor, which is used together with the driving wheel to output a lifting force to drive the rod to lift.

[0010] Preferably, a circumferential limiting device is provided in the top shell and at the connection position with the shell, and the circumferential limiting device includes a plurality of limiting wheels arranged vertically and distributed circumferentially. The circumferential limiting device is used to fix the rod (connecting rod or insulating rod) located inside the top shell. In order to facilitate the connection between the connecting rod and the mounting rod, the mounting rod rotates in the slot, and the connecting rod in the top shell needs to be circumferentially limited. Only in this way can the mounting rod and the connecting rod rotate relative to each other, so that the mounting rod and the connecting rod are connected together.

[0011] Preferably, the housing is close to one end of the tightening device and is provided with a counterweight outside the housing, and the counterweight is used to increase the weight of the entire tester, lower the center of gravity of the device, and improve the stability of the test work.

[0012] Preferably, the counterweight block is provided with a plurality of ejector slots, and the ejector slots are detachably connected to ejector pins. Ejector pins can be installed inside the counterweight block through the ejector slots, and the tester can be fixed on the soft ground surface through the ejector pins; of course, if the ground surface is relatively hard, the ejector pins can be removed and the counterweight block can be directly placed on the ground surface.

[0013] A method for using a lightning arrester live tester, implemented using the lightning arrester live tester described in any one of claims 1 to 8, comprising the following steps: S1: preparing a connecting rod and a plurality of mounting rods; S2: placing the mounting rod from a slot into the interior of a shell, and then inserting the connecting rod from the top of the top shell so that the connecting rod is located between a pressure wheel and a driving wheel and abuts against the mounting rod in the shell; S3: starting a first drive device to connect the mounting rod and the connecting rod; and then starting a second drive device to lift the mounting rod and the connecting rod upward together.

[0014] Preferably, the connecting ends of the connecting rod and the mounting rod are provided with a matching threaded structure, and a threaded blind hole and a threaded section are provided between the connecting rod and the mounting rod, so that the connection between the connecting rod and the mounting rod can be achieved when the connecting rod and the mounting rod rotate relative to each other.

[0015] Compared with the prior art, the present invention has the following advantages: (1) the modular rod structure is adopted to realize the automatic assembly of the tester; (2) it avoids the operator from manually lifting the tester and maintaining it in a permanent state, thereby improving the safety of the operation and ensuring the accuracy of the test structure; (3) the overall volume is small, convenient to use and maintain, and the method of use is simple. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a schematic diagram of the shell and top shell of the present invention.

[0018] Figure 3 The figure is a schematic diagram of the state when the mounting rod and the connecting rod are assembled in the present invention.

[0019] Figure 4 It is a schematic diagram of the internal structure of the present invention.

[0020] Figure 5 for Figure 4 A is an enlarged schematic diagram.

[0021] Figure 6 It is an exploded view of the moving block of the present invention.

[0022] Figure 7 It is a schematic diagram of an implementation of the hinge plate and the pressure wheel of the present invention.

[0023] Figure 8 It is a schematic diagram of the ejector pin of the present invention.

[0024] In the figure: 1. Housing, 2. Card slot, 3. Top shell, 4. Mounting groove, 5. Moving block, 51. Positioning hole, 52. Positioning column, 6. Elastic member, 7. First driving device, 8. Accommodating groove, 9. Turntable, 10. Rolling mechanism, 101. Hinge plate, 102. Pressing wheel, 103. Reset member, 104. Hinge shaft, 105. Prismatic hole, 106. Toggle rod, 107. Toggle mouth, 11. Second driving device, 12. Driving wheel, 13. Circumferential limiting device, 131. Limiting wheel, 132. Rotating frame, 14. Counterweight block, 15. Ejector groove, 16. Ejector, 161. Fixing cap, 17. Mounting rod, 18. Connecting rod, 19. Placement hole, 20. Arc surface, 21. Limiting step, 22. Positioning groove, 23. Wedge-shaped table, 24. Ring table, 25. Counterweight groove, 26. Mounting hole, 27. Clamp head. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0026] Example 1: Figures 1 to 8 The lightning arrester live tester shown includes two half shells 1, the shells 1 are columnar structures, the two shells 1 are detachably connected, and after the two shells 1 are assembled together, they form an integral tester device. A top shell 3 structure is provided at the upper end of the shell 1, and a mounting slot 4 is provided at the lower end of the shell 1; the shell 1 and the top shell 3 are an integrally formed structure, and a slot 2 structure is provided inside the shell 1, and the slot 2 structure is formed by a lateral opening of the shell 1, and the mounting slot 4 is also provided inside the shell 1, the bottom of the slot 2 is connected to the mounting slot 4, and the top of the slot 2 is connected to the top shell 3. A placement hole 19 is provided at the top of the top shell 3 and at a position corresponding to the slot 2, and the placement hole 19 is aligned with the axis of the slot 2; it is used to place the connecting rod 18, and the slot 2 is used to place the mounting rod 17.

[0027] Specifically, an arc surface 20 is provided inside the card slot 2, and a flat surface is provided at the entrance of the card slot 2. The mounting rod 17 and the connecting rod 18 are both cylindrical rod structures. The entrance of the card slot 2 is a rectangular opening formed by a flat surface, and the mounting rod 17 can be easily placed therein. The mounting rod 17 needs to be placed vertically and then inserted into the card slot 2 from the side; and the arc surface 20 inside the card slot 2 can be adapted to the mounting rod 17 to ensure that the mounting rod 17 can rotate normally in the card slot 2.

[0028] A tightening device is arranged in the mounting groove 4 at the bottom of the card slot 2. The mounting groove 4 is a rectangular groove, which can play a role of circumferential fixing and limiting the internal tightening device. At the same time, a limiting step 21 is arranged at the groove mouth of the mounting groove 4. The limiting step 21 separates the mounting groove 4 from the card slot 2. At the same time, the limiting step 21 can play a role of limiting the tightening device in the vertical direction, thereby preventing the tightening device from escaping from the mounting groove 4 in the vertical direction.

[0029] Specifically, the tightening device includes a moving block 5, such as Figure 6 As shown, the moving block 5 is also composed of two halves of the structure, one of the moving blocks 5 is provided with a positioning hole 51, and the other moving block is provided with a positioning column 52. Through the cooperation of the positioning hole 51 and the positioning column 52, the two moving blocks 5 form a whole. A receiving groove 8 is provided inside the moving block 5. The receiving groove 8 is also a rectangular groove structure. The receiving groove 8 is located at the top position of the moving block 5. A semi-cylindrical hole is opened on the top of the moving block 5. After the two moving blocks 5 are spliced ​​together, the two semi-cylindrical holes form a cylindrical hole. A first driving device 7 is fixedly placed in the receiving groove 8. The first driving device 7 adopts a servo motor. The output end of the first driving device 7 is an output shaft. The output shaft extends from the receiving groove 8 through the cylindrical hole, and a turntable 9 is provided on the output shaft.

[0030] A positioning groove 22 is provided at the bottom of the moving block 5, and a wedge-shaped platform 23 structure is provided at the top of the moving block 5; the notch of the positioning groove 22 is located at the bottom of the moving block 5, and the circumference of the positioning groove 22 extends radially to form an annular platform 24; the overall size of the wedge-shaped platform 23 is larger than the size of the main part of the moving block 5, so that the lower part of the moving block 5 can slide in the installation groove 4, and the annular platform 24 can abut against the limiting step 21 to prevent the moving block 5 from detaching from the installation groove 4, and the wedge-shaped platform 23 at the top of the moving block 5 is located in the card slot 2 to ensure that the moving block 5 as a whole will not completely enter the installation groove 4.

[0031] An elastic member 6 is also provided in the installation slot 4. Specifically, the elastic member 6 is a compression spring. One end of the spring abuts against the bottom of the installation slot 4, and the other end of the spring abuts against the positioning slot 22 at the bottom of the moving block 5. In the initial state, the elastic member 6 and the moving block 5 are both in the vertical direction. Under the action of gravity, the moving block 5 makes the elastic member 6 in a certain compression state, but still makes the wedge-shaped platform 23 on the moving block 5 and the limiting step 21 at the bottom of the slot 2 in a separated state. When the installation rod 17 is placed into the slot 2, the end of the installation rod 17 will abut against the turntable 9 at the top of the moving block 5, further compressing the elastic member 6, ensuring that the installation rod 17 is subjected to axial force, so that the bottom of the installation rod 17 and the turntable 9 are always in contact. When the turntable 9 rotates, it will drive the installation rod 17 to rotate together.

[0032] The top shell 3 on the upper part of the shell 1 is in the shape of a rectangular parallelepiped as a whole. Similarly, the top shell 3 and the shell 1 are an integrally formed structure. Therefore, the top shell 3 is also a two-half structure. There is a rectangular parallelepiped cavity inside the top shell 3, and the top shell 3 is arranged eccentrically on the shell 1 as a whole. Figure 4 As shown, a transmission device is provided inside the top shell 3, and the transmission device can output power in the vertical direction, so as to drive the insulating rod (a whole formed by connecting the connecting rod 18 and the mounting rod 17) inside the top shell 3 to be lifted upward.

[0033] Specific as Figure 4 As shown, the cavity volume of the left part of the top shell 3 is larger than that of the right part (the left and right sides are the directions shown in the figure and are relative to the position of the shell 1). A rolling mechanism 10 is arranged on the left side, and the rolling mechanism 10 includes a hinge shaft 104 and a hinge plate 101. A prismatic hole 105 is arranged on the surface of the top shell 3. The two ends of the hinge shaft 104 are prisms adapted to the prismatic hole 105. Therefore, when the two ends of the hinge shaft 104 are installed in the prismatic holes 105 on the two halves of the top shell 3, the hinge shaft 104 cannot rotate relative to the top shell 3. A hinge plate 101 is rotatably connected to the hinge shaft 104, as shown in FIG. Figure 7 As shown, two hinge plates 101 are provided and symmetrically distributed on both sides of the center of the hinge shaft 104. The hinge plates 101 are elongated plate structures. Two hinge holes are provided on each hinge plate 101. One of the hinge holes is rotatably connected to the hinge shaft 101, and a pressure wheel 102 is rotatably connected to the other hinge hole. The circumferential surface of the pressure wheel 102 is a concave arc surface, and is adapted to the axial surfaces of the connecting rod 18 and the mounting rod 17, that is, the surfaces of the mounting rod 17 and the connecting rod 18 can cooperate with the circumferential surface of the pressure wheel 102 to increase the contact area, thereby increasing the friction between the pressure wheel 102 and the mounting rod 17 and the connecting rod 18.

[0034] A reset member 103 is also sleeved on the hinge shaft 104. Specifically, the reset member 103 adopts a torsion spring structure. Of course, the reset member 103 can also adopt a spring. When the reset member 103 is a spring, its position needs to be adjusted accordingly so that the reset member 103 can drive the hinge plate 101 to swing in the direction of the axis of the shell 1. In order to make the two hinged plates 101 subjected to the same force, a torsion spring structure is provided at the position of the two hinged plates 101 and on the hinge shaft 104 as a reset member 103, one end of the torsion spring is fixedly connected to the hinged plate 101, and the other end of the torsion spring is fixedly connected to the inner surface of the top shell 3, and the middle part of the torsion spring is sleeved on the hinge shaft 104. When the hinged plate 101 rotates around the hinge shaft 104 relative to the top shell 3, the hinged plate 101 will swing toward the axial position of the shell 1 under the action of the elastic restoring force of the torsion spring. When the tester is working, a connecting rod 17 or an insulating rod structure is placed on the axial position of the shell 1, so that the pressure wheel 102 on the hinged plate 101 can always keep pressing the connecting rod 18 or the insulating rod.

[0035] However, the slot 2 of the shell 1 can and can only accommodate the length of one mounting rod 17, so the mounting rod 17 in the slot 2 cannot automatically enter the top shell 3. A connecting rod 18 is required to first connect the mounting rod 17 into a whole, and then the mounting rod 17 can be driven to lift upward by the connecting rod 18. Specifically, a placement hole 19 is provided on the upper part of the top shell 3, and the placement hole 19 is located at the axis position of the shell 1. When the tester is first used, the connecting rod 18 needs to be inserted from the placement hole 19 into the top shell 3, so that the axis of the connecting rod 18 and the axis of the shell 1 will coincide, that is, the connecting rod 18 and the mounting rod 17 in the shell 1 will be aligned, and finally the connecting rod 18 and the mounting rod 17 can be connected. The specific connection operation is that the above-mentioned turntable 9 drives the mounting rod 17 to rotate, so that the mounting rod 17 and the connecting rod 18 are tightened.

[0036] Since the hinge plate 101 in the rolling mechanism 10 is elastically acted upon by the reset member 103, the hinge plate 101 will deflect toward the position where the axis of the shell 1 is located, that is, the pressure wheel 102 will be located at the position where the axis of the shell 1 is located; and the pressure wheel 101 is located in the upper part of the top shell 3, and the swing direction of the pressure wheel 102 is opposite to the movement direction of the connecting rod 18 (or the mounting rod 17 or the insulating rod), that is, its swing direction is downward. Therefore, in order to avoid the pressure wheel 102 from hindering the insertion of the connecting rod 18, it is necessary to manually or mechanically lift the pressure wheel 102 and push the hinge plate 101 upward.

[0037] Specifically, Figure 3 , Figure 4 as well as Figure 7As shown, a toggle rod 106 is provided on the hinge plate 101, and the toggle rod 106 is located between the two half top shells 3, and a toggle opening 107 is provided at the upper left corner of the top shell 3. The toggle rod 106 extends from the hinge plate 101 to the outside of the toggle opening 107, and the toggle opening 107 can provide a swing space for the toggle rod 106, so that the toggle rod 106 has a swing amplitude. Before the connecting rod 18 is inserted into the top shell 3 from the placement hole 19 at the upper part of the top shell 3, the toggle rod 106 is first toggled to make the hinge plate 101 swing upward, and the pressure wheel 102 leaves the position where the axis of the housing 1 is located, so that the connecting rod 18 can smoothly penetrate into the top shell 3. In addition, when the connecting rod 18 penetrates into the top shell 3, the toggle rod 106 is released, and under the action of the reset member 103, the hinge plate 101 swings downward, and the concave surface on the pressure wheel 102 will abut against the surface of the connecting rod 18.

[0038] It should be noted that, in addition to the manual control of the toggle lever 106, it can also be controlled by electric drive to further reduce the burden of manpower.

[0039] It should also be noted that, in addition to the above-mentioned structure and method, the following structure and method can also be used to realize the swing of the hinge plate 101. Specifically, a toggle lever is provided on the hinge plate 101, and the toggle lever is perpendicular to the plane where the hinge plate is located. An arc groove is provided on one of the half top shells 3 (the top shell 3 is composed of two halves, referring to one half of the top shell 3). The arc groove is an arc structure, and the center position of the arc groove is located on the axis of the hinge shaft 104. One end of the toggle lever is fixed on the hinge plate, and the other end passes through the arc groove to the outer surface of the top shell 3. That is, the toggle lever is also perpendicular to the outer surface of the top shell 3. Specifically, when the toggle lever is toggled, the toggle lever rotates along the arc groove with the hinge shaft 104 as the center, thereby driving the hinge plate 101 to swing around the hinge shaft 104. The effect of this technical solution is consistent with the effect of the above-mentioned other structure, which belongs to a more common swing control method, and can also be operated manually or mechanically automatically.

[0040] A second driving device 11 is also disposed in the top shell 3. The second driving device 11 is disposed in the upper right corner of the top shell 3 (eg Figure 4The second driving device 11 is smaller than the rolling mechanism 10 as a whole. Therefore, in order to reduce the overall volume of the top shell 3, the left and right parts of the top shell 3 are not the same size, that is, the top shell 3 is eccentrically arranged on the shell 1. The second driving device 11 includes a driving wheel 12. The driving wheel 12 is the same as the pressure wheel 102. Its two end faces are parallel to the surfaces of the two half top shells 3, and an arc groove is also provided on the driving wheel 12. The arc groove on the driving wheel 12 is adapted to the surface of the connecting rod 18 (or the mounting rod 17 or the insulating rod). Thereby, the contact area between the driving wheel 10 and the connecting rod 18 and other rods can be increased, and the friction force can be improved. It should be noted that after the connecting rod 18 is placed in the top shell 3, the connecting rod 18 is located between the pressure wheel 102 and the driving wheel 12, and the pressure wheel 102 and the driving wheel 12 are both in contact with the surface of the connecting rod 18. That is, the pressure wheel 102 and the driving wheel 12 can generate a sufficiently large extrusion force on the connecting rod 18.

[0041] The second drive device 11 is a servo motor. Specifically, the servo motor can be a servo motor of model LS60A30. The servo motor has a self-locking function. The second drive device 11 is arranged on the outer surface of the top shell 3. The output end of the second drive device 11 is connected to the above-mentioned driving wheel 12 structure. When the second drive device 11 is started, the driving wheel 12 rotates. Since the driving wheel 12 and the pressure wheel 102 can provide a sufficiently large squeezing force for the connecting rod 18 (or the mounting rod 17 or the insulating rod), that is, provide a sufficiently large friction force for the connecting rod 18, the lifting action of the connecting rod 18 (or the mounting rod 17 or the insulating rod) can be realized. However, the downward movement cannot be realized or the downward movement is difficult, because the hinged plate 101 on the rolling mechanism 10 can drive the pressure wheel 102 to the position of the axis of the shell 1 under the action of the reset member 103 (only in this way can the connecting rod 18 have an extrusion effect), so when the connecting rod 18 is inserted from the top shell 1 to the inside of the top shell 3, the pressure wheel 102 and the connecting rod 18 are abutted, and the rolling mechanism 10 still has a downward swinging tendency under the action of the reset member 103 and its own gravity. Due to the lack of space for the rolling mechanism 10 to move (already occupied by the inserted connecting rod 18), the downward movement of the connecting rod 18 is hindered. Although the pressure wheel 102 and the hinge plate 101 are rotatably connected, the pressure between the pressure wheel 102 and the connecting rod 18 is relatively large, and the downward movement will only further increase the squeezing force, thereby further increasing the friction force, resulting in the connecting rod 18 being unable to move downward or moving with difficulty; while when moving upward, the connecting rod 18 will make the hinge plate 101 tend to swing upward. Therefore, the friction force of the connecting rod 18 moving upward is much smaller than the friction force when moving downward, so the lifting action can be performed but the lowering action cannot be performed.

[0042] It should be noted that in the present embodiment, the position of the pressure wheel 102 and the position of the driving wheel 12 are in a flush state. Of course, the positions of the pressure wheel 102 and the driving wheel 12 can be staggered up and down. At this time, since the pressure wheel 102 and the driving wheel 12 are respectively located on both sides of the insulating rod and produce a squeezing effect with the insulating rod, the insulating rod itself will generate a torque, and the insulating rod will abut against the upper and lower ends of the top shell 3 to increase the friction and stability of the insulating rod in the vertical direction, so that after the height position of the insulating rod is determined, the stability can be guaranteed.

[0043] A circumferential limiting device 13 is also provided on the bottom of the top shell 3, and the circumferential limiting device 13 is aligned with the placement hole 19 on the top of the shell 1. The circumferential limiting device 13 includes a rotating frame 132. The rotating frame 132 is provided with four groups, and two are provided in each half of the top shell 3. When the half top shells 3 are spliced ​​together, the four rotating frames 132 can be arranged in a circular distribution state. A limiting wheel 131 is provided on each group of rotating frames 132, and the axial ends of the limiting wheel 131 are arranged in the same horizontal direction. The limiting wheel 131 is thus arranged in a vertical state, which is consistent with the arrangement of the pressure wheel 102 and the driving wheel 12. In the same state, when the connecting rod 18 is inserted into the top shell 3 and abuts against the mounting rod 17 in the bottom shell 1, the connecting rod 17 will enter the circle surrounded by the four limiting wheels 131, and the four limiting wheels 131 are all abutted against the surface of the connecting rod 18, so that the limiting wheels 131 can circumferentially limit the connecting rod 18 or the insulating rod composed of the connecting rod 18 and the mounting rod 17 to prevent the connecting rod 17 or the insulating rod from radial runout. At the same time, the limiting wheels 131 and the connecting rod 18 or the insulating rod are in rolling connection, so as not to limit the vertical movement of the connecting rod 18 or the insulating rod.

[0044] A counterweight 14 is also provided at the lower portion of the shell 1. The counterweight 14 is a disc-shaped structure. The interior of the counterweight 14 is a cavity forming a counterweight slot 25. The counterweight 14 and the shell 1 are not connected. Similarly, the counterweight slot 25 is also a half structure. The counterweight 14 and the shell are fixedly connected. By adding a counterweight inside the counterweight slot 25, the weight of the counterweight 14 is increased, making the shell 1 and the top shell 3 more stable, thereby improving the stability of the tester.

[0045] A plurality of ejector grooves 15 are provided at the bottom of the counterweight groove 25. The ejector grooves 15 are conical holes, and ejector pins 16 are arranged in the ejector grooves 15. Figure 8As shown, the ejector pin 16 includes a conical fixing cap 161, the fixing cap 161 is adapted to the ejector pin slot 15, and the ejector pin slot 15 and the fixing cap 161 can be disassembled. The ejector pin 16 can fix the tester on the soft surface; of course, if the surface is relatively hard, the ejector pin 16 can be removed and the counterweight block 14 can be directly placed on the surface. It should be noted that the counterweight block 14 and the housing 1 can also be two independent structures, so that the counterweight block 14 can adopt an integral structure instead of a half structure.

[0046] Since structures need to be placed inside both the shell 2 and the top shell 3, a half structure is required. Mounting holes 26 are provided on the half shell 1 and the half top shell 3, and the two half structures are connected together by bolts and other connecting parts to form the shell 1 and the top shell 3.

[0047] Example 2: Figures 1 to 8 A method for using a lightning arrester live tester is shown. It includes the following steps, first preparing a connecting rod 18 and a plurality of mounting rods 17, wherein, it is necessary to first put a mounting rod 17 from the position of the card slot 2 into the shell 1, so that there is a mounting rod 17 inside the shell 1 that can abut the connecting rod 18, and then the connecting rod 18 needs to be inserted into the top shell 3 from the placement hole 19 on the upper part of the top shell 3 and abut with the mounting rod 17 inside the shell 1. It should be noted that a threaded blind hole and a threaded section are provided between the connecting rod 18 and the mounting rod 17, and when the connecting rod 18 and the mounting rod 17 rotate relative to each other, the connection between the connecting rod 18 and the mounting rod 17 can be achieved. Specifically, a clamp head 27 is provided on the top of the connecting rod 18 for cable testing work, and a threaded blind hole is provided at the bottom of the connecting rod 18. Correspondingly, the two ends of the mounting rod 17 are respectively a threaded blind hole and a threaded section, and the threaded section on the mounting rod 17 needs to correspond to the threaded blind hole at the bottom of the connecting rod 18.

[0048] After the mounting rod 17 is placed inside the housing 1, the lower end of the mounting rod 17 abuts against the turntable 9 structure, the first driving device 7 is started, the turntable 9 structure is driven to rotate, and the turntable 9 structure drives the mounting rod 17 to rotate circumferentially, and the mounting rod 17 is threadedly connected to the connecting rod 18. After the mounting rod 17 and the connecting rod 18 are connected in place, the first driving device 7 stops working.

[0049] Then the second driving device 11 is started, and the driving wheel 12 and the pressure wheel 102 have a squeezing effect on the connecting rod 18, so that the driving wheel 12 and the pressure wheel 102 drive the connecting rod 18 to lift upward, and the installation rod 17 is also lifted accordingly, until the position of the installation rod 17 is located at the original position of the connecting rod 18, and the second driving device 11 stops working. Thus, the lifting work of the insulating rod (consisting of the connecting rod 18 and the installation rod 17) is completed.

[0050] If the length of the insulating rod is still not enough at this time, you can continue to put the installation rod 17 into the slot 2 and repeat the above operation, so that the number of installation rods 17 gradually increases and the length of the insulating rod becomes longer and longer, so that the clamp head 27 can reach the specified position for testing.

Claims

1. A lightning arrester live tester, characterized in that: It comprises a columnar shell, a slot is provided on the side of the shell, a tightening device is arranged at one end of the shell and inside the shell, a top shell is arranged at the other end of the shell, the top shell is connected with the shell, and a transmission device driven along the axial direction of the shell is arranged inside the top shell.

2. The lightning arrester live tester according to claim 1, characterized in that: The housing is provided with a mounting groove for accommodating a tightening device, the mounting groove is communicated with the clamping groove, the tightening device comprises a moving block extending from the mounting groove to the clamping groove, and an elastic member connected to the moving block is provided in the mounting groove.

3. The lightning arrester live tester according to claim 2, characterized in that: The tightening device also includes a first driving device. A receiving groove for receiving the first driving device is provided in the moving block. A rotating disk is provided at the output end of the first driving device. The rotating disk is located in the clamping groove.

4. The lightning arrester live tester according to claim 1, characterized in that: The transmission device comprises a rolling mechanism, and the rolling mechanism comprises a hinged plate, one end of the hinged plate is hinged to the top shell, one end of the hinged plate is provided with a pressure wheel, and a reset member is also provided on the hinged plate.

5. The lightning arrester live tester according to claim 4, characterized in that: The transmission device also includes a second driving device, and a driving wheel is provided at the output end of the second driving device.

6. A lightning arrester live tester according to any one of claims 1 to 5, characterized in that A circumferential limiting device is provided in the top shell and at a position connected to the shell body. The circumferential limiting device includes a plurality of limiting wheels which are arranged vertically and distributed circumferentially.

7. A lightning arrester live tester according to any one of claims 1 to 5, characterized in that: The shell is close to one end of the tightening device and a counterweight is also arranged outside the shell.

8. The lightning arrester live tester according to claim 7, characterized in that: A plurality of ejector pin grooves are arranged in the counterweight block, and the ejector pin grooves can be detachably connected to the ejector pins.

9. A method for using a lightning arrester live tester, characterized in that: The method is implemented by using a lightning arrester live tester as claimed in any one of claims 1 to 8, comprising the following steps: S1: Prepare a connecting rod and several mounting rods; S2: Place the mounting rod from the slot into the housing, and then insert the connecting rod from the top of the top housing so that the connecting rod is located between the pressing wheel and the driving wheel and abuts against the mounting rod in the housing; S3: Start the first driving device to connect the mounting rod and the connecting rod; then start the second driving device to lift the mounting rod and the connecting rod upward together.

10. The method for using the lightning arrester live tester according to claim 9, characterized in that: The connecting ends of the connecting rod and the mounting rod are provided with a matchable thread structure.

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