Insulator tensile strength detection device and method

Abstract

The present invention belongs to the technical field of insulator performance testing, and in particular, to an insulator tensile strength testing device and method. In view of the fact that the existing insulator tensile strength testing device cannot effectively solve the problem that the detection accuracy is affected by the deviation between the insulator force axis and the fixed point connection line, the following scheme is proposed, including a mounting platform; two fixed plates, both of which are located above the mounting platform, both fixed plates are provided with cutouts, and stabilizing columns are fixedly connected in the cutouts; two tension sensors, both tension sensors are located between the two stabilizing columns. The insulator tensile strength testing device and method disclosed by the present invention can adjust the insulator's force point when the fixed point of the insulator and the device and the insulator force axis are inconsistent during the insulator light tensile testing process, thereby affecting the detection accuracy. This allows the insulator's force axis to coincide with the fixed point connection line, thereby avoiding errors and improving the detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of insulator performance detection, and in particular to a device and method for detecting the tensile strength of an insulator. Background Art

[0002] Insulators are special insulating components installed between conductors at different potentials or between conductors and grounded structures. They mainly include porcelain insulators, glass insulators, and composite insulators. The mechanical properties of insulators play an important role in power systems and directly affect their safety.

[0003] Existing insulator tensile strength testing devices often have a fixed position at which the tensile force is applied to the insulator. When the line connecting the insulator and the fixed point of the testing device is inconsistent with the axis of the insulator itself, the insulator will tilt, causing the tensile force applied by the device to be too large, thereby affecting the accuracy of the device's detection of the insulator's tensile strength. Summary of the Invention

[0004] The present invention discloses an insulator tensile strength detection device and method, which aims to solve the technical problem in the background art that the existing insulator tensile strength detection device cannot effectively solve the technical problem that the deviation between the insulator force axis and the fixed point connection line affects the detection accuracy.

[0005] The present invention provides an insulator tensile strength detection device, comprising a mounting platform;

[0006] Two fixing plates, both of which are located above the mounting platform, each having a cutout hole formed thereon, and a stabilizing column fixedly connected to each of the cutout holes;

[0007] Two tension sensors, both located between the two stabilizing columns, with connectors fixedly connected to opposite sides of the two tension sensors, and connectors movably connected to the two U-shaped frames;

[0008] Two tension synchronization modules, both of which are located between two fixed plates and above the mounting platform, are used to adjust the fixed position of the insulator and the device and the tension direction of the insulator to the same axis.

[0009] In a preferred embodiment, the two tension synchronization modules include two symmetrical support plates, which are fixedly connected to the side opposite to the stabilizing column on the same side, and an annular plate is provided between the two support plates, and a plurality of connecting rods with equidistant circumferences are fixedly connected between the annular plate and the support plate on the same side, and the side of the annular plate close to the support plate is fixedly connected to an annular frame, and a series rod is provided on the annular plate, and a switching module is provided on the two U-shaped frames; the outside of the two annular frames are fixedly connected to three rivets with equidistant circumferences, and the outside of the rivets are movably connected to supporting forks, and the three supporting forks on the same side are located on different planes, and the inner walls of the supporting forks are slidably connected to the outside of the series rods on the same side, and the side of the series rods close to the support plate is fixedly connected to a limiting block, and the limiting block is fitted with the outside of the outermost supporting fork; the two annular plates are fixedly connected to an annular guide rail on the side away from the support plate, and the outside of the annular guide rail is slidably connected to a movable platform, and the outside of the movable platform is fixedly connected to motor 1, and the output end of motor 1 is connected The gear 1 is connected through the coupling, and the outside of the annular guide rail is fixedly connected with a gear ring, which meshes with the gear 1 on the same side. The outside of the movable platform is fixedly connected with an extension plate, and a slot is provided on the extension plate. An annular member is slidably connected in the slot, and the inner wall of the annular member is fixedly connected to the outside of the series rod on the same side; the outsides of the two movable platforms are movably connected to a force arm 1, and one end of the force arm 1 is fixedly connected to a round rod, and the outside of the round rod is movably connected to a force arm 2, and the end of the force arm 2 away from the round rod is connected to the The outside of the annular part is movably connected, and a torsion spring is wrapped around the outside of the round rod. One end of the torsion spring is fixedly connected to the outside of the force arm 1, and the other end is fixedly connected to the outside of the force arm 2. The outside of the movable platform is fixedly connected to a convex seat, and the convex seat is movably connected to a winding roller. The outside of the convex seat is fixedly connected to motor 2, and the output end of motor 2 is connected to one side of the winding roller on the same side through a coupling. The outside of the winding roller is fixedly connected to a wire rope, and the end of the wire rope away from the winding roller is fixedly connected to the outside of the annular part on the same side.

[0010] In a preferred solution, the switching module includes three different fixing parts, each of which is fixedly connected to the outside of the connecting part on the same side, one side of the two connecting parts is fixedly connected to a rotating seat, the outside of the rotating seat is provided with an annular frame, the annular frame is fixedly connected to the side opposite to the U-shaped frame on the same side, and the inner wall of one side of the annular frame is fixedly connected with three arc-shaped springs equidistantly distributed around the circumference; the outsides of the two rotating seats are fixedly connected to a support plate, the support plates are located in the annular frame, and the side of the support plate close to the arc-shaped spring plate is fixedly connected with a protrusion, and the protrusion is located between the two arc-shaped springs on the same side, and a tensioning and adaptation module is provided on the mounting platform.

[0011] In a preferred solution, the tensioning and adaptation module includes a bidirectional screw rod, and two symmetrical circular holes are provided on the mounting platform, the inner walls of the two circular holes are movably connected to the outside of the bidirectional screw rod, and the outside of the bidirectional screw rod is fixedly connected to gear 2, and the top inner wall of the mounting platform is fixedly connected to motor 3, and the output end of motor 3 is connected to gear 4 through a coupling, and gear 4 is meshed with gear 2; two symmetrical moving racks are provided on the outside of the bidirectional screw rod, and two symmetrical rectangular grooves are provided on the mounting platform, and the inner walls of the rectangular grooves are both slidably connected to the outside of the moving rack on the same side, and the upper sides of the two moving racks are provided with sliding grooves, and the inner walls of the sliding grooves are both slidably connected to the outside of the fixed plate on the same side, and the outside of the moving racks is fixedly connected to hydraulic rods, and the output ends of the hydraulic rods are fixedly connected to the outside of the fixed plate on the same side.

[0012] A method for testing the tensile strength of an insulator, using the insulator tensile strength testing device described above, comprises the following steps:

[0013] Step 1: According to the length of the insulator to be tested, the two U-shaped frames are moved to the two ends of the insulator through the tensioning and adaptation modules;

[0014] Step 2: Use the switching module to fix both ends of the insulator to the device according to the fixing type of the insulator to be tested;

[0015] Step 3: Pre-tension the insulator and observe whether the values ​​of the two tension sensors are consistent. If there is a difference, use the tension synchronization module to adjust so that the fixed position of the insulator coincides with the force axis of the insulator. After coincidence, perform formal tensioning and record the data after testing.

[0016] From the above, it can be seen that the insulator tensile strength detection device provided by the present invention has the function of adjusting the force point of the insulator when the fixed point of the insulator and the device and the force axis of the insulator are inconsistent during the light tensile test of the insulator, resulting in the detection accuracy being affected, so that the force axis of the insulator coincides with the line connecting the fixed point, thereby avoiding errors and improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of an insulator tensile strength detection device proposed by the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of an insulator tensile strength testing device proposed by the present invention;

[0019] Figure 3 This is a structural schematic diagram of a tension synchronization module of an insulator tensile strength detection device proposed by the present invention;

[0020] Figure 4This is a schematic diagram of the ring frame structure of an insulator tensile strength testing device proposed by the present invention;

[0021] Figure 5 A schematic diagram of the movable platform structure of an insulator tensile strength testing device proposed by the present invention;

[0022] Figure 6 This is a schematic diagram of the winding roller structure of an insulator tensile strength testing device proposed by the present invention;

[0023] Figure 7 For the present invention Figure 6 A magnified view of point A in the figure;

[0024] Figure 8 This is a schematic structural diagram of a switching module of an insulator tensile strength detection device proposed by the present invention;

[0025] Figure 9 This is a structural schematic diagram of the tensioning and adaptation module of an insulator tensile strength detection device proposed by the present invention.

[0026] In the figure: 1. Mounting table; 2. Fixing plate; 3. Stabilizing column; 4. U-shaped frame; 5. Connecting piece; 6. Tension sensor; 7. Tension synchronization module; 701. Support plate; 702. Annular plate; 703. Connecting rod; 704. Series rod; 705. Annular frame; 706. Rivet; 707. Support fork; 708. Limit block; 709. Annular guide rail; 710. Movable table; 711. Gear ring; 712. Motor 1; 713. Gear 1; 714. Extension plate; 715. Annular piece ;716, force arm one; 717, force arm two; 718, torsion spring; 719, winding roller; 720, motor two; 721, wire rope; 8, switching module; 801, fixing piece; 802, rotating seat; 803, ring frame; 804, arc-shaped spring leaf; 805, support plate; 806, bump; 9, tensioning and adaptation module; 901, bidirectional screw rod; 902, gear two; 903, motor three; 904, gear four; 905, movable frame; 906, rectangular slot; 907, hydraulic rod. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] The insulator tensile strength detection device disclosed in the present invention is mainly used in scenarios where the existing insulator tensile strength detection device cannot effectively solve the problem of deviation between the insulator force axis and the fixed point connection line, which affects the detection accuracy.

[0029] Reference Figures 1-9, an insulator tensile strength testing device, comprising a mounting platform 1;

[0030] Two fixing plates 2, both of which are located above the mounting platform 1, each of which has a cutout hole, and each of which is connected to a stabilizing column 3 by bolts;

[0031] Two tension sensors 6, both located between the two stabilizing columns 3, with opposite sides of the two tension sensors 6 connected to connectors 5 via bolts, and both U-shaped frames 4 rotatably connected to connectors 5 via bearings;

[0032] Two tension synchronization modules 7, both of which are located between the two fixed plates 2, and both of which are located above the mounting platform 1, are used to adjust the fixed position of the insulator and the device and the tension direction of the insulator to the same axis.

[0033] Specifically, the device uses the tension synchronization module 7 to adjust the force point of the insulator when the fixed point of the insulator and the device and the force axis of the insulator are inconsistent during the light tensile test of the insulator, which affects the detection accuracy. This allows the force axis of the insulator to coincide with the line connecting the fixed points, thereby avoiding errors and improving detection accuracy.

[0034] Reference Figure 3 、 Figure 4 、 Figure 5-Figure 7In a preferred embodiment, the two tension synchronization modules 7 include two symmetrical supporting plates 701, the supporting plates 701 are connected to the stabilizing column 3 on the same side by bolts, an annular plate 702 is provided between the two supporting plates 701, and the annular plate 702 and the supporting plate 701 on the same side are connected by bolts with multiple connecting rods 703 distributed equidistantly around the circumference, and the annular plate 702 is connected to the supporting plate 701 on the side thereof by bolts with an annular frame 705, a serial rod 704 is provided on each annular plate 702, and a switching module 8 is provided on each of the two U-shaped frames 4; the outside of the two annular frames 705 are connected by bolts with three rivets 706 distributed equidistantly around the circumference. The outside of the rivet 706 is rotatably connected to the supporting fork 707 through a bearing, and the three supporting forks 707 on the same side are located on different planes. The inner walls of the supporting forks 707 are slidably connected to the outside of the serial rod 704 on the same side. The side of the serial rod 704 close to the supporting plate 701 is connected to the limiting block 708 by bolts, and the limiting block 708 fits with the outside of the outermost supporting fork 707; the two annular plates 702 are connected to the annular guide rail 709 by bolts on the side away from the supporting plate 701, and the outside of the annular guide rail 709 is slidably connected to the movable platform 710, and the outside of the movable platform 710 is connected to the motor 1 712 by bolts, and the output end of the motor 1 712 is connected by a coupling. There is a gear 713, and the outside of the annular guide rail 709 is connected to a gear ring 711 by bolts, and the gear ring 711 is meshed with the gear 1 713 on the same side. The outside of the movable platform 710 is connected to an extension plate 714 by bolts. A slot is provided on the extension plate 714, and an annular member 715 is slidably connected in the slot. The inner wall of the annular member 715 is connected to the outside of the serial rod 704 on the same side by bolts; the outside of the two movable platforms 710 are rotatably connected to a force arm 1 716 through a bearing, and one end of the force arm 1 716 is connected to a round rod by bolts. The outside of the round rod is rotatably connected to a force arm 2 717 through a bearing, and the end of the force arm 2 717 away from the round rod is connected to the annular member 7 15 is rotatably connected through bearings, and a torsion spring 718 is wrapped around the outside of the round rod. One end of the torsion spring 718 is connected to the outside of the force arm 1 716 by bolts, and the other end is connected to the outside of the force arm 2 717 by bolts. The outside of the movable platform 710 is connected to a convex seat by bolts, and the convex seat is rotatably connected to the winding roller 719 through bearings. The outside of the convex seat is connected to the motor 2 720 by bolts, and the output end of the motor 2 720 is connected to one side of the winding roller 719 on the same side by a coupling. The outside of the winding roller 719 is connected to the wire rope 721 by bolts, and the end of the wire rope 721 away from the winding roller 719 is connected to the outside of the annular member 715 on the same side by bolts.

[0035] Specifically, when the fixing point of the insulator and the device is inconsistent with the force axis of the insulator, start motor 1 712, which drives the movable platform 710 to rotate on the annular guide rail 709, so that the extension plate 714 moves in a circular axis on the annular guide rail 709, start motor 2 720, which tightens or releases the wire rope 721, so that the annular member 715 overcomes the torsion of the torsion spring 718 and moves on the extension plate 714, so that the series rod 704 on the annular member 715 can change its position within a certain direction, so that the connecting member 5 on the U-shaped frame 4 connected to the series rod 704 can drive one end of the insulator to move to a certain extent, and the three supporting forks 707 limit the horizontal movement direction of the series rod 704, so that the series rod 704 can only move in a direction parallel to the annular plate 702.

[0036] In a specific application scenario, the tension synchronization module 7 is mainly suitable for the tension synchronization link in the tension synchronization process, that is, the tension synchronization module 7 uses the annular member 715, the extension plate 714 and the movable platform 710 to enable the series rod 704 connected to the insulator to be quickly and conveniently moved on the annular plate 702, thereby greatly reducing the time for correction and adjustment and improving the detection efficiency. The support fork 707 and the limit block 708 can enable the series rod 704 to move when pushed by the annular member 715. The series rod 704 itself can always remain perpendicular to the annular plate 702, thereby reducing the impact of the device on the detection accuracy.

[0037] Reference Figure 8 In a preferred embodiment, the switching module 8 includes three different fixing members 801, and the fixing members 801 are connected to the outside of the connecting member 5 on the same side by bolts. One side of the two connecting members 5 is connected to a rotating seat 802 by bolts, and the outside of the rotating seat 802 is provided with an annular frame 803. The side of the annular frame 803 opposite to the U-shaped frame 4 on the same side is connected by bolts, and the inner wall of one side of the annular frame 803 is connected to three circumferentially equidistantly distributed arc-shaped springs 804 by bolts; the outside of the two rotating seats 802 are connected to a supporting plate 805 by bolts, and the supporting plate 805 is located in the annular frame 803, and the side of the supporting plate 805 close to the arc-shaped spring 804 is connected to a protrusion 806 by bolts, and the protrusion 806 is located between the two arc-shaped springs 804 on the same side. A tensioning and adaptation module 9 is provided on the mounting platform 1.

[0038] Specifically, when it is necessary to connect insulators of multiple different connection types, the rotating seat 802 is rotated, and the rotating seat 802 drives the connecting member 5 to rotate, and the fixing member 801 on the connecting member 5 is switched. During this process, the following protrusion 806 will overcome the resistance of the arc-shaped spring leaf 804 and move in the gap between the two adjacent arc-shaped spring leaves 804, so that after the fixing member 801 is switched, the protrusion 806 can stay in the gap, so that the connecting member 5 no longer rotates.

[0039] In a specific application scenario, the switching module 8 is mainly suitable for the switching link in the switching process, that is, the switching module 8 uses the protrusion 806 and the arc-shaped spring 804 to realize fast and stable switching of the fixing part 801, so that the fixing part 801 remains in this position after switching, greatly reducing the difficulty of personnel operation and simplifying the switching process.

[0040] Reference Figure 9 In a preferred embodiment, the tensioning and adaptation module 9 includes a bidirectional screw 901, and two symmetrical circular holes are opened on the mounting platform 1. The inner walls of the two circular holes are rotatably connected to the outer side of the bidirectional screw 901 through bearings, and the outer side of the bidirectional screw 901 is connected to the gear 2 902 by bolts. The top inner wall of the mounting platform 1 is connected to the motor 3 903 by bolts. The output end of the motor 3 903 is connected to the gear 4 904 through a coupling. The gear 4 904 is meshed with the gear 2 902; Two symmetrical moving frames 905 are provided on the outside of the screw rod 901, and two symmetrical rectangular grooves 906 are provided on the mounting platform 1. The inner walls of the rectangular grooves 906 are slidably connected to the outside of the moving frame 905 on the same side, and the upper sides of the two moving frames 905 are provided with sliding grooves, and the inner walls of the sliding grooves are slidably connected to the outside of the fixed plate 2 on the same side. The outside of the moving frame 905 is connected to the hydraulic rod 907 by bolts, and the output end of the hydraulic rod 907 is connected to the outside of the fixed plate 2 on the same side by bolts.

[0041] Specifically, according to the length of the insulator to be tested, the motor three 903 is started, and the annular frame 803 drives the bidirectional screw rod 901 to rotate, so that the movable frame 905 on the bidirectional screw rod 901 can move on the rectangular groove 906, so that the spacing of the movable frame 905 adapts to the length of the insulator, and the hydraulic rod 907 is started. The collection movable frame 905 can push the tension synchronization module 7 to rise and fall on the movable frame 905, thereby adapting to the volume of the insulator. When the insulator is fixed on the device and a light tensile test is started, the motor three 903 is started again to move the two movable frames 905 away from each other, thereby applying tension to the insulator. After the insulator is broken, the data detected on the tension sensor 6 is recorded.

[0042] In specific application scenarios, the tensioning and adaptation module 9 is mainly suitable for the tensioning and adaptation links in the tensioning and adaptation process, that is, the tensioning and adaptation module 9 uses a bidirectional screw rod 901 and a movable frame 905 to enable the device to be appropriately adjusted according to the different lengths and volumes of the insulators, so that the device can be adapted to the insulators, thereby improving the applicability of the device. At the same time, the bidirectional screw rod 901 can provide stable pulling force for the device during tensioning, thereby improving the efficiency and accuracy of detection.

[0043] A method for testing the tensile strength of an insulator, using the insulator tensile strength testing device described above, comprises the following steps:

[0044] Step 1: Based on the length of the insulator to be tested, the tensioning and adapting module 9 is adjusted to move the two U-shaped frames 4 to both ends of the insulator (based on the length of the insulator to be tested, the motor 3 903 is started, the annular frame 803 drives the bidirectional screw 901 to rotate, so that the movable frame 905 on the bidirectional screw 901 can move on the rectangular slot 906, and the spacing of the movable frames 905 is adapted to the length of the insulator. The hydraulic rod 907 is started, and the collecting movable frame 905 can push the tension synchronization module 7 on the movable frame 905 to rise and fall, thereby adapting to the volume of the insulator. When the insulator is fixed to the device and the light tensile test begins, the motor 3 903 is started again to move the two movable frames 905 away from each other, thereby applying tension to the insulator. After the insulator is broken, the data detected by the tension sensor 6 is recorded);

[0045] Step 2: Use the switching module 8 to fix both ends of the insulator to the device according to the fixing type of the insulator to be tested (when connecting insulators of multiple different connection types, rotate the rotating seat 802, which drives the connector 5 to rotate, switching the fixing member 801 on the connector 5. During this process, the following protrusion 806 will overcome the resistance of the arc-shaped spring leaves 804 and move in the gap between two adjacent arc-shaped spring leaves 804. Therefore, after the fixing member 801 is switched, the protrusion 806 can stay in the gap, preventing the connector 5 from rotating).

[0046] Step 3: Pre-tension the insulator and observe whether the values ​​of the two tension sensors 6 are consistent. If there is a discrepancy, use the tension synchronization module 7 to adjust so that the fixed position of the insulator coincides with the force axis of the insulator. After coincidence, formal tensioning is carried out. After the test, record the data (when the fixed point of the insulator and the device is inconsistent with the force axis of the insulator, start the motor 712, which drives the movable platform 710 to rotate on the annular guide rail 709, so that the extension plate 714 moves on the circular axis on the annular guide rail 709, and start the motor Second 720, motor 720 tightens or releases the wire rope 721, so that the annular member 715 overcomes the torsion of the torsion spring 718 and moves on the extension plate 714, so that the series rod 704 on the annular member 715 can change its position within a certain direction, so that the connecting member 5 on the U-shaped frame 4 connected to the series rod 704 can drive one end of the insulator to move to a certain extent, and the three supporting forks 707 limit the horizontal movement direction of the series rod 704, so that the series rod 704 can only move in the direction parallel to the annular plate 702).

[0047] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An insulator tensile strength detection device, characterized in that: including a mounting platform (1); Two fixing plates (2), both of the fixing plates (2) are located above the mounting platform (1), both fixing plates (2) are provided with cutout holes, and stabilizing columns (3) are fixedly connected in the cutout holes; Two tension sensors (6), both tension sensors (6) are located between the two stabilizing columns (3), opposite sides of the two tension sensors (6) are fixedly connected to a connecting piece (5), and both U-shaped frames (4) are movably connected to a connecting piece (5); Two tension synchronization modules (7), both of which are located between the two fixed plates (2), and both of which are located above the mounting platform (1), and the tension synchronization modules (7) are used to adjust the fixed position of the insulator and the device and the tension direction of the insulator to the same axis; The two tension synchronization modules (7) include two symmetrical supporting plates (701), the supporting plates (701) are fixedly connected to the side opposite to the stabilizing column (3) on the same side, an annular plate (702) is provided between the two supporting plates (701), a plurality of connecting rods (703) distributed equidistantly around the circumference are fixedly connected between the annular plate (702) and the supporting plate (701) on the same side, and an annular frame (705) is fixedly connected to the side of the annular plate (702) close to the supporting plate (701), a serial rod (704) is provided on the annular plate (702), and a switching module (8) is provided on the two U-shaped frames (4); The exteriors of the two annular frames (705) are fixedly connected to three rivets (706) distributed equidistantly around the circumference, the exteriors of the rivets (706) are movably connected to support forks (707), and the three support forks (707) on the same side are located on different planes, the inner walls of the support forks (707) are slidably connected to the exteriors of the serial rods (704) on the same side, a limiting block (708) is fixedly connected to one side of the serial rods (704) close to the support plate (701), and the limiting block (708) is in contact with the exterior of the outermost support fork (707); The two annular plates (702) are fixedly connected to an annular guide rail (709) on one side away from the supporting plate (701), and the outside of the annular guide rail (709) is slidably connected to a movable platform (710), and the outside of the movable platform (710) is fixedly connected to a motor (712), and the output end of the motor (712) is connected to a gear (713) via a coupling, and the outside of the annular guide rail (709) is fixedly connected to a gear ring (711), and the gear ring (711) is meshed with the gear (713) on the same side, and the outside of the movable platform (710) is fixedly connected to an extension plate (714), and a notch is provided on the extension plate (714), and a ring member (715) is slidably connected in the notch, and the inner wall of the ring member (715) is fixedly connected to the outside of the series rod (704) on the same side; The exterior of the two movable platforms (710) are movably connected to a force arm 1 (716), one end of the force arm 1 (716) is fixedly connected to a round rod, the exterior of the round rod is movably connected to a force arm 2 (717), and the end of the force arm 2 (717) away from the round rod is movably connected to the exterior of the annular member (715) on the same side, and the exterior of the round rod is surrounded by a torsion spring (718), one end of the torsion spring (718) is fixedly connected to the exterior of the force arm 1 (716), and the other end is fixedly connected to the exterior of the force arm 2 (717). The movable platform (710) is fixedly connected to the outside with a convex seat, and the convex seat is movably connected to a winding roller (719). The outside of the convex seat is fixedly connected to a second motor (720), and the output end of the second motor (720) is connected to one side of the winding roller (719) on the same side through a coupling. The outside of the winding roller (719) is fixedly connected to a wire rope (721), and the end of the wire rope (721) away from the winding roller (719) is fixedly connected to the outside of the annular member (715) on the same side.

2. The insulator tensile strength detection device according to claim 1, characterized in that: The switching module (8) comprises three different fixing members (801), each of the fixing members (801) being fixedly connected to the outside of the connecting member (5) on the same side, a rotating seat (802) being fixedly connected to one side of each of the two connecting members (5), an annular frame (803) being provided on the outside of each of the rotating seats (802), the annular frame (803) being fixedly connected to the side opposite to the U-shaped frame (4) on the same side, and three arc-shaped spring leaves (804) equidistantly distributed around the circumference being fixedly connected to the inner wall of one side of the annular frame (803).

3. The insulator tensile strength detection device according to claim 2, characterized in that: The exteriors of the two rotating seats (802) are fixedly connected to support plates (805), the support plates (805) are both located in the annular frame (803), and the sides of the support plates (805) close to the arc-shaped spring leaves (804) are fixedly connected to protrusions (806), the protrusions (806) are both located between the two arc-shaped spring leaves (804) on the same side, and a tensioning and adaptation module (9) is provided on the mounting platform (1).

4. The insulator tensile strength detection device according to claim 3, characterized in that: The tensioning and adaptation module (9) includes a bidirectional screw (901), and two symmetrical circular holes are opened on the mounting platform (1). The inner walls of the two circular holes are movably connected to the outside of the bidirectional screw (901), and the outside of the bidirectional screw (901) is fixedly connected to the gear 2 (902). The top inner wall of the mounting platform (1) is fixedly connected to the motor 3 (903), and the output end of the motor 3 (903) is connected to the gear 4 (904) through a coupling, and the gear 4 (904) is meshed with the gear 2 (902).

5. The insulator tensile strength detection device according to claim 4, characterized in that: Two symmetrical moving frames (905) are provided on the outside of the bidirectional screw rod (901), and two symmetrical rectangular grooves (906) are provided on the mounting platform (1). The inner walls of the rectangular grooves (906) are slidably connected to the outside of the moving frame (905) on the same side, and the upper sides of the two moving frames (905) are provided with a sliding groove, and the inner walls of the sliding groove are slidably connected to the outside of the fixed plate (2) on the same side. The outside of the moving frame (905) is fixedly connected to a hydraulic rod (907), and the output end of the hydraulic rod (907) is fixedly connected to the outside of the fixed plate (2) on the same side.

6. A method for testing the tensile strength of an insulator, using the insulator tensile strength testing device according to claim 5, characterized in that: The steps include: Step 1: According to the length of the insulator to be tested, the two U-shaped frames (4) are moved to the two ends of the insulator by adjusting the tensioning and adaptation module (9); Step 2: Use the switching module (8) to fix the two ends of the insulator to the device according to the fixing type of the insulator to be tested; Step 3: Pre-tension the insulator and observe whether the values ​​of the two tension sensors (6) are consistent. If there is a difference, use the tension synchronization module (7) to adjust so that the fixed position of the insulator coincides with the force axis of the insulator. After coincidence, formal tensioning is carried out. After the test, the data is recorded.

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