Safety tool insulating rod testing tool

Abstract

The invention relates to a safety tool insulating rod testing tool, and belongs to the technical field of insulating rod testing, the safety tool insulating rod testing tool comprises a fixed testing frame, one side of the fixed testing frame is provided with a movable testing frame, the outer wall of the movable testing frame is provided with a testing wire, and the top of the movable testing frame is fixedly connected with a fixed placing plate. The outer wall of the movable test frame is slidably connected with a lifting placement rod, and an insulating rod body is placed on the outer wall of the fixed placement plate; a first traction block is slidably connected to the outer wall of the fixed test frame, a second traction block is slidably connected to the outer wall of the movable test frame, a lifting frame is slidably connected to the outer wall of the second traction block, and a jacking block is slidably connected to the outer wall of the lifting frame. The first traction block and the second traction block are arranged, so that when a withstand voltage test is performed on the insulating rod through the test tool, the insulating rod is subjected to automatic traction feeding movement, the contact frequency of a worker and the test tool is reduced, and the effect of conveniently and rapidly protecting the worker is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of insulating rod testing, in particular to a safety tool insulating rod testing tool. Background Art

[0002] Insulating rods are essential safety tools for inspection and maintenance in the power industry. To ensure the good performance of insulating rods, they must be subjected to voltage withstand tests regularly every year to detect their insulation. Most insulating rods used in substations are three-section insulating rods, which are connected by rotating and fixing the three ends when in use. Currently, when conducting voltage withstand tests on insulating rods, clamps are usually used to clamp the two ends of the insulating rod for testing, or flat-laying is used for segmented testing.

[0003] In the prior art, an insulating pipe with announcement number CN 112462206 B is fixed on a bottom support seat through a connecting fixing frame, a rectangular through hole is provided on one side of the insulating pipe, a pushing block is provided outside the rectangular through hole, a front fixing ring is provided on the pushing block, the front fixing ring is provided in the insulating channel through the rectangular through hole, the wire is fixedly connected to the ammeter through the wire limit block, a rear fixing ring is provided inside the other side of the insulating pipe, the rear fixing ring is fixedly connected to the bottom support seat through the rear fixing frame, the front fixing ring and the rear fixing ring are on the same horizontal plane, and an arc-shaped protrusion and an arc-shaped inner groove baffle are respectively provided on the front and rear side walls of the bottom support seat, the arc-shaped protrusion is a longitudinally cut cylindrical structure, a circular through hole is vertically provided in the center of the arc-shaped protrusion, a lower thread is provided at the bottom of the circular through hole, and the arc-shaped inner groove baffle matches the arc-shaped protrusion structure; the present invention has the advantages of good pressure resistance test effect, easy use in outdoor operations, and high safety level.

[0004] However, when the existing insulating rod test tool is used, although it can perform fixed withstand voltage test operations on insulating rods of different lengths well, when multiple insulating rods are placed on the test tool for testing, the operator is required to manually load and unload the insulating rods in sequence. The automatic loading and unloading of multiple insulating rods on the test tool is not very effective. When the operator manually loads and unloads the insulating rods, the current on the surface of the test tool may cause electric shock to the operator, reducing the safety of the operator's use of the test tool. At the same time, it reduces the efficiency of the operator's withstand voltage test of multiple insulating rods through the test tool, which does not meet people's usage needs. For this reason, we propose a safety tool insulating rod test tool. Summary of the Invention

[0005] In order to solve the problems mentioned in the above background, the present invention provides a safety tool insulating rod testing tool to solve the problems raised in the above background technology that the automatic loading and unloading of multiple insulating rods on the testing tool is not effective and reduces the efficiency of workers in performing voltage withstand tests on multiple insulating rods through the testing tool.

[0006] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows:

[0007] The safety tool insulation rod test tool includes a fixed test frame, a mobile test frame is provided on one side of the fixed test frame, a test wire is provided on the outer wall of the mobile test frame, a fixed placement plate is fixedly connected to the top of the mobile test frame, a lifting placement rod is slidably connected to the outer wall of the mobile test frame, and an insulating rod body is placed on the outer wall of the fixed placement plate;

[0008] The outer wall of the fixed test frame is slidably connected to a first traction block, the outer wall of the mobile test frame is slidably connected to a second traction block, the outer wall of the second traction block is slidably connected to a lifting frame, and the outer wall of the lifting frame is slidably connected to a jacking block. The first traction block and the second traction block are provided so that when the insulating rod is subjected to a withstand voltage test through the test tool, the insulating rod is automatically pulled and loaded, thereby reducing the frequency of contact between the staff and the test tool, thereby achieving the effect of convenient protection for the staff.

[0009] Preferably, the lifting rod is arranged directly above the fixed placement plate, and the surfaces of the lifting rod and the fixed placement plate are both provided with arc grooves distributed in a straight line, which play a role in automatic compression testing of multiple insulating rods.

[0010] Preferably, the sliding distances of the first traction block and the second traction block are set to be the same as the length of the fixed placement plate, and the top of the fixed test frame is fixedly connected to a second electric push rod fixedly connected to the outer wall of the lifting placement rod. A lifting groove is provided at the connection part between the outer wall of the fixed test frame and the lifting placement rod, which serves to load and unload insulating rods at different positions in sequence.

[0011] Preferably, the bottom of the second traction block is fixedly connected to a first electric push rod, the bottom of the lifting frame is fixedly connected to a limit rod slidably connected to the outer wall of the second traction block, the outer wall of the lifting frame is provided with a first servo motor, the output end of the first servo motor is fixedly connected to a first threaded rod rotatably connected to the outer wall of the lifting frame, the outer wall of the first threaded rod is threadedly connected to a threaded slider slidably connected to the outer wall of the lifting frame, the outer wall of the threaded slider is rotatably connected to the pulling rod, the jacking block and the lifting frame are set, so that the insulating rod to be subjected to the withstand voltage test can be automatically lifted and unloaded, thereby improving the loading efficiency of multiple groups of insulating rods on the testing tool, thereby achieving the effect of improving the working comfort of the staff.

[0012] Preferably, one end of the first electric push rod is fixedly connected to the bottom of the lifting frame, a fixing groove is provided at the connection between the outer wall of the lifting frame and the threaded slider, and one end of the pulling rod is rotationally connected to the bottom of the lifting block, which plays a role in driving the initial lifting movement of the lifting block.

[0013] Preferably, the outer wall of the first traction block is fixedly connected to a fixed rod, the inner wall of the fixed rod is telescopically connected to a telescopic rod fixedly connected to the outer wall of the second traction block, the outer wall of the fixed rod is provided with a nut, the inner wall of the nut is threadedly connected to a bolt slidably connected to the outer wall of the telescopic rod, and an adjustment slot is provided at the connection part between the outer wall of the telescopic rod and the bolt. The provided telescopic rod can adjust the placement spacing of the fixed test frame and the mobile test frame, so as to achieve the effect of adjusting the withstand voltage test of insulating rods of different lengths.

[0014] Preferably, a sliding groove is provided at the connection portion between the inner wall of the fixed rod and the telescopic rod, and the adjusting groove is provided in a straight line shape on the outer wall of the telescopic rod, which plays a role in driving the telescopic rod to be adjusted to multiple lengths.

[0015] Preferably, the bottom of the fixed placement plate is fixedly connected to a third electric push rod, one end of the third electric push rod is fixedly connected to a sliding rod slidably connected to the outer wall of the fixed test frame, and one end of the sliding rod is fixedly connected to a lifting plate. The lifting plate and anti-slip grooves are provided so that after the mobile test frame and the fixed test frame are moved in position, the lifting plate is driven to move downward synchronously through the downward movement of the sliding rod, so that the anti-slip groove contacts the ground and the roller at the bottom of the test frame is separated from the ground, thereby improving the stability of the test tool in the insulation rod withstand voltage test.

[0016] Preferably, the bottom of the lifting plate is provided with anti-slip grooves at the contact portion with the ground, so as to improve the stability of the test tool in the withstand voltage test of the insulating rod.

[0017] Preferably, the outer wall of the fixed test frame is provided with a second servo motor, and the output end of the second servo motor is fixedly connected to a second threaded rod threadedly connected to the outer wall of the first traction block. A reciprocating groove is provided at the connection part between the outer wall of the fixed test frame and the first traction block, which drives the first traction block and the second traction block to slide back and forth, thereby achieving the effect of automatically loading and unloading insulating rods at different positions in sequence.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The first traction block and the second traction block provided in the present invention enable the insulating rod to be automatically pulled and loaded when the insulating rod is subjected to a withstand voltage test by the testing tool, thereby reducing the frequency of contact between the staff and the testing tool and achieving the effect of convenient protection for the staff.

[0020] 2. The lifting block and lifting frame provided in the present invention enable automatic reciprocating lifting and unloading movement of the insulating rods to be tested for withstand voltage, thereby improving the loading efficiency of multiple groups of insulating rods on the test tool and achieving the effect of improving the working comfort of the staff.

[0021] 3. The telescopic rod provided in the present invention can adjust the placement distance between the fixed test frame and the mobile test frame, thereby achieving the effect of adjusting the withstand voltage test for insulating rods of different lengths.

[0022] 4. The lifting plate and anti-slip grooves provided in the present invention enable the lifting plate to move downward synchronously through the downward movement of the sliding rod after the mobile test frame and the fixed test frame are moved in position, so that the anti-slip grooves come into contact with the ground and the rollers at the bottom of the test frame are separated from the ground, thereby improving the stability of the test tool for the withstand voltage test of the insulating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall side structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the test wire position distribution structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the anti-slip pattern position distribution structure of the present invention;

[0027] Figure 5 Schematic diagram of the threaded rod position distribution structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the position distribution structure of the lifting frame and the lifting block of the present invention;

[0029] Figure 7 This is a schematic diagram of the connection structure between the fixed rod and the telescopic rod of the present invention;

[0030] Figure 8 This is a schematic diagram of the card slot position distribution structure of the present invention;

[0031] Figure 9 It is a schematic diagram of the connection structure between the sliding rod and the lifting plate of the present invention.

[0032] The reference numerals in the accompanying drawings are:

[0033] 1. Fixed test frame; 2. Mobile test frame; 3. Test wire; 4. Fixed placement plate; 5. Lifting placement rod; 6. Insulating rod; 7. First traction block; 8. Second traction block; 9. First electric push rod; 10. Lifting frame; 11. Limit rod; 12. First servo motor; 13. First threaded rod; 14. Threaded slider; 15. Fixed slot; 16. Pull rod; 17. Lifting block; 18. Fixed rod; 19. Telescopic rod; 20. Slide slot; 21. Nut; 22. Bolt; 23. Adjustment slot; 24. Second electric push rod; 25. Lifting slot; 26. Third electric push rod; 27. Sliding rod; 28. Lifting plate; 29. Anti-slip groove; 30. Second servo motor; 31. Second threaded rod; 32. Reciprocating slot. DETAILED DESCRIPTION

[0034] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0035] Example 1:

[0036] See also Figures 1 to 9 This embodiment provides a safety tool insulation rod testing tool, including a fixed test frame 1, a mobile test frame 2 is provided on one side of the fixed test frame 1, a test wire 3 is provided on the outer wall of the mobile test frame 2, a fixed placement plate 4 is fixedly connected to the top of the mobile test frame 2, a lifting placement rod 5 is slidably connected to the outer wall of the mobile test frame 2, and an insulating rod body 6 is placed on the outer wall of the fixed placement plate 4;

[0037] The outer wall of the fixed test frame 1 is slidably connected to the first traction block 7, the outer wall of the mobile test frame 2 is slidably connected to the second traction block 8, the outer wall of the second traction block 8 is slidably connected to the lifting frame 10, and the outer wall of the lifting frame 10 is slidably connected to the jacking block 17. The first traction block 7 and the second traction block 8 are set, so that when the insulating rod is subjected to a withstand voltage test through the test tool, the insulating rod is automatically pulled and loaded, thereby reducing the frequency of contact between the staff and the test tool, thereby achieving the effect of convenient protection for the staff.

[0038] like Figure 1 and Figure 2 As shown, the lifting and placing rod 5 is arranged directly above the fixed placing plate 4, and the surfaces of the lifting and placing rod 5 and the fixed placing plate 4 are both provided with arc grooves distributed in a straight line, which is conducive to automatically pressing and fixing the insulating rod to be tested by setting the lifting and placing rod 5 directly above the fixed placing plate 4.

[0039] like Figure 1As shown, the sliding distances of the first traction block 7 and the second traction block 8 are both set to be the same as the length of the fixed placement plate 4, and the top of the fixed test frame 1 is fixedly connected to a second electric push rod 24 fixedly connected to the outer wall of the lifting placement rod 5. A lifting groove 25 is provided at the connection part between the outer wall of the fixed test frame 1 and the lifting placement rod 5, which is conducive to the setting that the sliding distances of the first traction block 7 and the second traction block 8 are the same as the length of the fixed placement plate 4, thereby playing a role in automatically loading multiple insulating rods in sequence.

[0040] like Figure 5 and 6 As shown, the bottom of the second traction block 8 is fixedly connected to the first electric push rod 9, the bottom of the lifting frame 10 is fixedly connected to the limit rod 11 which is slidably connected to the outer wall of the second traction block 8, the outer wall of the lifting frame 10 is provided with a first servo motor 12, the output end of the first servo motor 12 is fixedly connected to the first threaded rod 13 which is rotatably connected to the outer wall of the lifting frame 10, the outer wall of the first threaded rod 13 is threadedly connected to the threaded slider 14 which is slidably connected to the outer wall of the lifting frame 10, and the outer wall of the threaded slider 14 is rotatably connected to the pulling rod 16. When loading the material onto the test tool, the first electric push rod 9 is turned on, driving the lifting frame 10 fixedly connected to the limit rod 11 to slide along the outer wall of the first traction block 7, thereby performing a preliminary lifting movement on the jacking block 17, and turning on the first servo motor 12 to drive the threaded slider 14 to slide along the inner wall of the fixed groove 15 through the rotation of the first threaded rod 13, and through the rotation connection of the pull rod 16, driving the jacking block 17 to slide along the outer wall of the lifting frame 10, thereby automatically loading the insulating rod onto the test frame, thereby achieving the effect of improving the convenient protection of the staff.

[0041] like Figure 6 As shown, one end of the first electric push rod 9 is fixedly connected to the bottom of the lifting frame 10, a fixing groove 15 is provided at the connection portion between the outer wall of the lifting frame 10 and the threaded slider 14, and one end of the pulling rod 16 is rotatably connected to the bottom of the lifting block 17, which is conducive to the fixed connection between one end of the first electric push rod 9 and the bottom of the lifting frame 10, thereby driving the lifting frame 10 to be conveniently lifted.

[0042] like Figure 7 and Figure 8As shown, the outer wall of the first traction block 7 is fixedly connected to a fixing rod 18, and the inner wall of the fixing rod 18 is telescopically connected to a telescopic rod 19 fixedly connected to the outer wall of the second traction block 8. The outer wall of the fixing rod 18 is provided with a nut 21, and the inner wall of the nut 21 is threadedly connected to a bolt 22 which is slidably connected to the outer wall of the telescopic rod 19. An adjustment groove 23 is provided at the connection between the outer wall of the telescopic rod 19 and the bolt 22. When it is necessary to perform a withstand voltage test on insulating rods of different lengths, the telescopic rod 19 is pulled out to drive the telescopic rod 19 to slide along the inner wall of the slide groove 20, and after the telescopic rod 19 and the fixed rod 18 are pulled to the required length, the bolt 22 is rotated to pass through the limiting effect of the nut 21, so that the bolt 22 slides along the inner wall of the adjusting groove 23, thereby keeping the relative positions of the telescopic rod 19 and the fixed rod 18 fixed, thereby achieving the effect of adjusting the test of insulating rods of different lengths.

[0043] like Figure 8 As shown, a sliding groove 20 is provided at the connection portion between the inner wall of the fixed rod 18 and the telescopic rod 19, and an adjusting groove 23 is provided in a straight line on the outer wall of the telescopic rod 19, which is conducive to adjusting the placement and testing of insulating rods of different lengths through the adjusting groove 23 provided in a straight line on the outer wall of the telescopic rod 19.

[0044] like Figure 9 As shown, a third electric push rod 26 is fixedly connected to the bottom of the fixed placement plate 4, one end of the third electric push rod 26 is fixedly connected to a sliding rod 27 that is slidably connected to the outer wall of the fixed test frame 1, and one end of the sliding rod 27 is fixedly connected to a lifting plate 28. When the insulating rod is tested by the test tool, in order to improve the stability of the test tool after it is moved, the third electric push rod 26 is opened to drive the sliding rod 27 to slide along the outer wall of the fixed test frame 1, and drive the lifting plate 28 to slide along the outer wall of the fixed test frame 1, so that the anti-slip groove 29 is in contact with the ground, thereby improving the stability of the test frame when placed in different positions.

[0045] like Figure 4 As shown, the bottom of the lifting plate 28 is provided with anti-skid grooves 29 at the contact portion with the ground, which is beneficial to improve the friction between the test frame and the ground.

[0046] like Figure 5 As shown, a second servo motor 30 is provided on the outer wall of the fixed test frame 1, and the output end of the second servo motor 30 is fixedly connected to a second threaded rod 31 threadedly connected to the outer wall of the first traction block 7. A reciprocating groove 32 is provided at the connection portion between the outer wall of the fixed test frame 1 and the first traction block 7. The second threaded rod 31 and the reciprocating groove 32 are arranged to drive the first traction block 7 and the second traction block 8 to slide back and forth.

[0047] Working principle:

[0048] like Figure 1-9 As shown, when using the insulation rod test tool, first, use the voltage tester, ensure that its power connection is correct, and start the device, set the test parameters: press the set key, set the test parameters and save them, then turn off the power of the tester, connect the test lead 3: insert the red high-voltage wire and the black loop test wire into the corresponding ports respectively, the black loop wire is connected to the ground wire, and the red high-voltage wire is connected to the live wire or the neutral wire, start the test: turn on the voltage tester power, press the start key to start the test, and record the load test results. After the test is completed: turn off the power to complete the test;

[0049] Next, when it is necessary to automatically load the insulating rod onto the test tool, the first electric push rod 9 is turned on to drive the lifting frame 10 fixedly connected to the limit rod 11 to slide along the outer wall of the first traction block 7, thereby performing a preliminary lifting movement on the jacking block 17. The first servo motor 12 is turned on to drive the threaded slider 14 to slide along the inner wall of the fixed groove 15 through the rotation of the first threaded rod 13, and the lifting block 17 is driven to slide along the outer wall of the lifting frame 10 through the rotation connection of the pull rod 16, thereby automatically loading the insulating rod onto the test frame, thereby achieving the effect of improving the convenient protection of the staff.

[0050] Next, when it is necessary to perform a withstand voltage test on insulating rods of different lengths, the telescopic rod 19 is pulled out to drive the telescopic rod 19 to slide along the inner wall of the slide groove 20. After the telescopic rod 19 and the fixed rod 18 are pulled to the required length, the bolt 22 is rotated to slide along the inner wall of the adjustment groove 23 through the limiting effect of the nut 21, thereby maintaining the relative position of the telescopic rod 19 and the fixed rod 18 fixed, thereby achieving the effect of adjusting the test of insulating rods of different lengths.

[0051] Finally, when the insulating rod is tested using the test tool, in order to improve the stability of the test tool after it is moved, the third electric push rod 26 is turned on to drive the sliding rod 27 to slide along the outer wall of the fixed test frame 1, and the lifting plate 28 is driven to slide along the outer wall of the fixed test frame 1, so that the anti-slip groove 29 contacts the ground, which plays a role in improving the stability of the test frame when placed in different positions.

[0052] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A safety tool for testing insulating rods, comprising a fixed test stand (1), characterized in that: A mobile test frame (2) is provided on one side of the fixed test frame (1), a test lead (3) is provided on the outer wall of the mobile test frame (2), a fixed placement plate (4) is fixedly connected to the top of the mobile test frame (2), a lifting placement rod (5) is slidably connected to the outer wall of the mobile test frame (2), and an insulating rod (6) is placed on the outer wall of the fixed placement plate (4); The outer wall of the fixed test frame (1) is slidably connected to a first traction block (7), the outer wall of the mobile test frame (2) is slidably connected to a second traction block (8), the outer wall of the second traction block (8) is slidably connected to a lifting frame (10), and the outer wall of the lifting frame (10) is slidably connected to a lifting block (17).

2. The safety tool insulation rod testing tool according to claim 1, characterized in that: The lifting and placing rod (5) is arranged directly above the fixed placing plate (4), and the surfaces of the lifting and placing rod (5) and the fixed placing plate (4) are both provided with arc-shaped grooves distributed in a straight line.

3. The safety tool insulation rod testing tool according to claim 1, characterized in that: The sliding distances of the first traction block (7) and the second traction block (8) are both set to be the same as the length of the fixed placement plate (4); the top of the fixed test frame (1) is fixedly connected to a second electric push rod (24) fixedly connected to the outer wall of the lifting placement rod (5); and a lifting groove (25) is provided at the connection portion between the outer wall of the fixed test frame (1) and the lifting placement rod (5).

4. The safety tool insulation rod testing tool according to claim 1, characterized in that: The bottom of the second traction block (8) is fixedly connected to a first electric push rod (9), the bottom of the lifting frame (10) is fixedly connected to a limit rod (11) slidably connected to the outer wall of the second traction block (8), the outer wall of the lifting frame (10) is provided with a first servo motor (12), the output end of the first servo motor (12) is fixedly connected to a first threaded rod (13) rotatably connected to the outer wall of the lifting frame (10), the outer wall of the first threaded rod (13) is threadedly connected to a threaded slider (14) slidably connected to the outer wall of the lifting frame (10), and the outer wall of the threaded slider (14) is rotatably connected to a pulling rod (16).

5. The safety tool insulation rod testing tool according to claim 4, characterized in that: One end of the first electric push rod (9) is fixedly connected to the bottom of the lifting frame (10), a fixing groove (15) is provided at the connection portion between the outer wall of the lifting frame (10) and the threaded slider (14), and one end of the pulling rod (16) is rotatably connected to the bottom of the lifting block (17).

6. The safety tool insulation rod testing tool according to claim 1, characterized in that: The outer wall of the first traction block (7) is fixedly connected to a fixed rod (18), the inner wall of the fixed rod (18) is telescopically connected to a telescopic rod (19) fixedly connected to the outer wall of the second traction block (8), the outer wall of the fixed rod (18) is provided with a nut (21), the inner wall of the nut (21) is threadedly connected to a bolt (22) slidably connected to the outer wall of the telescopic rod (19), and an adjustment groove (23) is provided at the connection portion between the outer wall of the telescopic rod (19) and the bolt (22).

7. The safety tool insulation rod testing tool according to claim 6, characterized in that: A sliding groove (20) is provided at the connection portion between the inner wall of the fixed rod (18) and the telescopic rod (19), and the adjusting groove (23) is provided in a straight line shape on the outer wall of the telescopic rod (19).

8. The safety tool insulation rod testing tool according to claim 1, characterized in that: The bottom of the fixed placement plate (4) is fixedly connected to a third electric push rod (26), one end of the third electric push rod (26) is fixedly connected to a sliding rod (27) slidably connected to the outer wall of the fixed test frame (1), and one end of the sliding rod (27) is fixedly connected to a lifting plate (28).

9. The safety tool insulation rod testing tool according to claim 8, characterized in that: The bottom of the lifting plate (28) is provided with anti-skid grooves (29) at the position where the bottom contacts the ground.

10. The safety tool insulation rod testing tool according to claim 1, characterized in that: A second servo motor (30) is provided on the outer wall of the fixed test frame (1); an output end of the second servo motor (30) is fixedly connected to a second threaded rod (31) threadedly connected to the outer wall of the first traction block (7); and a reciprocating groove (32) is provided at a connection portion between the outer wall of the fixed test frame (1) and the first traction block (7).

Images