Multi-state conversion frame adaptive to flaw detection of steel structure

Abstract

The utility model discloses a multi-state conversion frame adapted to flaw detection of a steel structure, which comprises a bracket body, a moving plate and a placing plate are sequentially arranged in the bracket body from top to bottom, a clamping mechanism is arranged at the top of the moving plate, a buffer mechanism is arranged at the bottom of the placing plate, two moving rods are arranged at the top of the bracket body, and the two moving rods are arranged on the bracket body. Driving mechanisms are arranged at one ends of the two moving rods, and lifting mechanisms are arranged on the two sides of the support body. According to the utility model, a detection instrument can be directly placed at the top of the placing plate when not in use, and is pressed and fixed by the moving plate, so that the bracket body can be directly used as a detection instrument storage mechanism, and when a worker needs to carry out flaw detection on a steel structure, the detection instrument can be conveniently stored. A detection instrument and the bracket body can be directly carried to a working area together, so that the convenience of steel structure flaw detection work is improved, and the efficiency of steel structure flaw detection can also be indirectly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure ultrasonic instruments, in particular to a multi-state conversion frame adapted for steel structure flaw detection. Background Art

[0002] The ultrasonic testing instrument for steel structure is also called metal ultrasonic flaw detector. It is a portable industrial non-destructive flaw detection instrument. It can detect, locate, evaluate and diagnose various defects inside the workpiece quickly, conveniently, non-destructively and accurately. It is widely used in boilers, pressure vessels, aerospace, aviation, electricity, petroleum, chemical industry, offshore oil, pipelines, military industry, shipbuilding, automobiles, machinery manufacturing, metallurgy, metal processing industry, steel structure, railway transportation, nuclear power, colleges and universities and other industries. Since the components of steel structure are often connected by welding, it is necessary to manually use small ultrasonic testing instruments for steel structure to perform non-destructive testing on the connections of the components of the steel structure in turn to detect whether the connection structure is reliable.

[0003] Since most of the factories and venues made of steel structures are high-rise buildings, and the steel structure ultrasonic detection instrument in the prior art does not have a lifting function, when it is necessary to perform flaw detection on steel structures at higher positions, the staff is required to carry the steel structure ultrasonic detection instrument and climb up to a high place with the help of climbing tools to detect it. Manually carrying the steel structure ultrasonic detection instrument to perform high-altitude operations will bring great safety hazards to the staff, which is not conducive to the development of steel structure flaw detection work; and when it is necessary to perform flaw detection on steel structures at different positions at high altitudes, the staff is required to perform high-altitude operations many times, which further increases the danger of the entire steel structure flaw detection. When it comes to continuous flaw detection tests with large height differences, the position change process is difficult. Since the staff is in a fixed position, it is difficult to transfer positions at high altitudes, and it is difficult to achieve the flaw detection requirements with large height differences. There is a lack of relevant special tools for the continuous and continuous following and sticking test process on the surface of the steel structure. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a multi-state conversion frame suitable for flaw detection of steel structures.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A multi-state conversion frame adapted for flaw detection of steel structures comprises a support body, wherein a moving plate and a placement plate are sequentially arranged inside the support body from top to bottom, a clamping mechanism for clamping and fixing a detection instrument is arranged on the top of the moving plate, a buffer mechanism is arranged on the bottom of the placement plate, two moving rods are arranged on the top of the support body, a driving mechanism for driving the moving plate to move up and down is arranged on the ends of the two moving rods that are close to each other, and a lifting mechanism for driving the moving rods and the moving plate to move synchronously is arranged on both sides of the support body.

[0007] As a preferred solution, two groups of telescopic rods are symmetrically installed inside the bracket body, and the telescopic ends of the two groups of telescopic rods are respectively connected to the bottom ends of the moving rods adjacent thereto.

[0008] As a preferred solution, guide grooves are provided on both inner walls of the bracket body, and guide blocks that can move up and down in the guide grooves are installed on both outer walls of the movable plate and the placement plate.

[0009] As a preferred embodiment, the clamping mechanism includes a groove opened on the top of the movable plate, a double-headed screw is rotatably installed inside the groove, two sliding blocks are symmetrically installed on the outer wall of the double-headed screw, a clamping plate is installed on the top of the two sliding blocks, one end of the double-headed screw passes through the movable plate and is connected to a rotating handle, and a rubber pad and a sponge block are respectively installed on the top and bottom of the movable plate.

[0010] As a preferred embodiment, the driving mechanism includes a driving screw installed at the bottom of one end of the two moving rods, the two ends of the moving plate are respectively matched with the outer walls of the two driving screws, and the outer walls of the two moving plates away from each other are both installed with fixed plates.

[0011] As a preferred embodiment, the lifting mechanism includes two rotating rods rotatably installed at the bottom of the bracket body, and two notches are provided at the bottom of the bracket body for the rotating rods to rotate. Electric push rods are installed on the top of the two rotating rods away from the bracket body, and abutment blocks are rotatably installed at the telescopic ends of the two electric push rods. The tops of the two abutment blocks are respectively abutted against the bottoms of the fixed plates adjacent to them, and the two abutment blocks can be connected and fixed by means of a connecting plate and bolts.

[0012] As a preferred solution, the buffer mechanism includes multiple springs, which are respectively installed at four corners of the bottom of the placement plate, the bottom ends of the multiple springs are connected to the inner bottom surface of the bracket body, and damping rods are installed inside the multiple springs.

[0013] As a preferred embodiment, a damping multi-section rod is arranged on the top surface of the movable plate, and the damping multi-section rod includes a bottom rod and a connecting rod. The lower end of the bottom rod is detachably connected to the movable plate, the upper end of the bottom rod is hinged to one end of the connecting rod, and the other end of the connecting rod is provided with a clamping pressure head that cooperates with the probe.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In the utility model, when the detection instrument is not in use, it can be directly placed on the top of the placement plate and pressed and fixed by the movable plate, so that the bracket body can be directly used as a storage mechanism for the detection instrument. When the staff needs to perform flaw detection on the steel structure, the staff can directly carry the detection instrument together with the bracket body to the working area. When it is necessary to perform ultrasonic flaw detection on the steel structure at a higher position, the detection instrument is placed on the top of the movable plate, and after clamping and fixing it with the help of the clamping mechanism, the lifting mechanism located on both sides of the bracket body is controlled to drive the two fixed plates, the moving rod and the moving plate to be pushed upward together, thereby being able to drive the detection instrument to move upward, and automatically perform flaw detection on the steel structure at a higher position, thereby improving the efficiency of the entire flaw detection of the steel structure, and being able to achieve the flaw detection requirements with large height differences, and the continuous follow-up and sticking test process of the steel structure surface.

[0016] In the utility model, after completing the flaw detection of the steel structure, the detection instrument can be taken from the top of the movable plate and placed on the top of the placement plate below, the two rotating rods are rotated to one side of the bracket body, and then the two abutment blocks are rotated in the direction of approaching each other and connected and fixed with the help of the connecting plate and bolts, so that the two electric push rods can be used as lifting handles in conjunction with the two connected and fixed abutment blocks, thereby achieving the effect of convenient and quick use of the detection instrument.

[0017] Through the cooperation of the utility model, the detection instrument can not only realize dynamic lifting movement after being stably clamped, but also realize a persistent static state at a fixed position, and can also realize intermittent dynamic and static alternating movement, and can meet the detection requirements of various motion forms. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional structural schematic diagram of a multi-state conversion frame suitable for steel structure flaw detection proposed by the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure from another angle;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure when the stent body is transported;

[0021] Figure 4 is a schematic diagram of the three-dimensional structure of the buffer mechanism;

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the moving plate and the driving mechanism;

[0023] Figure 6is a schematic diagram of the three-dimensional structure of the mobile plate;

[0024] Figure 7 is a schematic diagram of the three-dimensional structure of the clamping mechanism;

[0025] Figure 8 It is a three-dimensional structural schematic diagram of the connection relationship between the moving plate and the damping multi-section rod, in which the two clamping claws are in the minimum clamping distance state;

[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure of the damping multi-section rod, in which the two clamping claws are in a relatively distant state.

[0027] In the figure: 1. bracket body; 3. guide groove; 4. moving plate; 5. placement plate; 6. rotating rod; 7. electric push rod; 8. moving rod; 9. fixed plate; 10. clamping plate; 11. spring; 12. notch; 13. abutment block; 14. driving screw rod; 15. sponge block; 16. connecting plate; 17. damping rod; 18. telescopic rod; 19. rotating handle; 20. rubber pad; 21. groove; 22. double-headed screw; 23-damping multi-section rod; 23-1-bottom rod; 23-2-connecting rod; 24-clamping pressure head; 24-1-fixed block; 24-2-two clamping claws. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely 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 of the embodiments.

[0029] Reference Figures 1 to 9 A multi-state conversion frame adapted for flaw detection of steel structures includes a bracket body 1, a moving plate 4 and a placement plate 5 are sequentially arranged inside the bracket body 1 from top to bottom, a clamping mechanism for clamping and fixing a detection instrument is arranged on the top of the moving plate 4, a buffer mechanism is arranged on the bottom of the placement plate 5, two moving rods 8 are arranged on the top of the bracket body 1, and a driving mechanism for driving the moving plate 4 to move up and down is arranged at one end of the two moving rods 8 that are close to each other, and a lifting mechanism for driving the moving rods 8 and the moving plate 4 to move up and down together is arranged on both sides of the bracket body 1.

[0030] The utility model is a special instrument for the clamping detection of existing steel structure flaw detection, which comprises a main machine and a probe, and its working principle is the same as that of the existing steel structure flaw detection detection instrument.

[0031] As a technical optimization solution in the present invention, two sets of telescopic rods 18 are symmetrically installed inside the bracket body 1, and the telescopic ends of the two sets of telescopic rods 18 are respectively connected to the bottom ends of the moving rods 8 close thereto. The two sets of telescopic rods 18 are ordinary telescopic rods that are manually controlled to extend and retract in the prior art. The two sets of telescopic rods 18 can assist in guiding and supporting the moving rod 8 moving upward, thereby preventing the moving rod 8 from shaking greatly during the upward movement, and improving the accuracy of instrument detection.

[0032] As a technical optimization solution in the utility model, guide grooves 3 are provided on both inner walls of the bracket body 1, and guide blocks that can move up and down in the guide grooves 3 are installed on both outer walls of the movable plate 4 and the placement plate 5. The guide blocks are slidably matched with the guide grooves 3, and can guide and limit the up and down movement of the movable plate 4 and the placement plate 5, ensuring that the up and down movement of the movable plate 4 and the placement plate 5 is always in a straight line.

[0033] As a technical optimization solution in the utility model, the clamping mechanism includes a groove 21 opened on the top of the movable plate 4, a double-headed screw 22 is rotatably installed inside the groove 21, two sliders are symmetrically installed on the outer wall of the double-headed screw 22, and a clamping plate 10 is installed on the top of the two sliders. One end of the double-headed screw 22 passes through the movable plate 4 and is connected to a rotating handle 19, and a rubber pad 20 and a sponge block 15 are installed on the top and bottom of the movable plate 4 respectively. The rubber pad 20 arranged on the top of the movable plate 4 can increase the friction of the detection instrument placed on the top of the movable plate 4, and avoid the sliding and instability of the detection instrument on the top of the movable plate 4; after the detection instrument is placed on the top of the rubber pad 20, the rotating handle 19 is manually rotated to drive the double-headed screw 22 to rotate, and at the same time, the two sliders and the clamping plate 10 can be moved in a direction close to each other, and the detection instrument is clamped and fixed by means of the two clamping plates 10, so as to improve the stability of the detection instrument when it is placed on the top of the movable plate 4 for use.

[0034] As a technical optimization solution in the utility model, the driving mechanism includes a driving screw 14 installed at the bottom of the end where the two moving rods 8 are close to each other, and the two ends of the moving plate 4 are respectively matched with the outer walls of the two driving screws 14, and the outer walls of the two moving plates 4 on the side away from each other are both installed with a fixing plate 9. In actual use, a driving device is pre-installed inside the end where the two moving rods 8 are close to each other, and the output ends of the two driving devices are respectively connected to the top ends of the two driving screws 14, so that the two driving screws 14 can be driven to rotate, so that the moving plate 4 can move up and down inside the bracket body 1 as the two driving screws 14 rotate forward and backward.

[0035] As a technical optimization solution in the utility model, the lifting mechanism includes two rotating rods 6 rotatably mounted on the bottom of the bracket body 1, and two notches 12 are provided at the bottom of the bracket body 1 for the rotating rods 6 to rotate. The top of the two rotating rods 6 away from the bracket body 1 is equipped with electric push rods 7, and the telescopic ends of the two electric push rods 7 are rotatably mounted with abutment blocks 13, and the tops of the two abutment blocks 13 are respectively abutted against the bottoms of the fixed plates 9 close to them, and the two abutment blocks 13 can be connected and fixed by the provided connecting plates 16 and bolts. When the two electric push rods 7 are rotated to the two sides of the bracket body 1 with the help of the corresponding rotating rods 6, the abutment blocks 13 at the telescopic ends of the two electric push rods 7 are respectively located at the bottoms of the two fixed plates 9, and the telescopic ends of the two electric push rods 7 are controlled to extend upward, which can push the two fixed plates 9 and the moving rod 8 to move upward together, so that the telescopic rod 18 located inside the bracket body 1 can extend upward together, and at the same time drive the moving plate 4 and the detection instrument on the top thereof to move upward together, so that the detection instrument can detect higher steel structures.

[0036] As a technical optimization solution in the present invention, the buffer mechanism includes a plurality of springs 11, which are respectively installed at the four corners of the bottom of the placement plate 5, and the bottom ends of the plurality of springs 11 are connected to the inner bottom surface of the bracket body 1, and damping rods 17 are installed inside the plurality of springs 11. After use, the detection instrument can be removed from the top of the moving plate 4 and placed on the top of the placement plate 5, and the moving plate 4 can be driven downward by two driving screws 14 to press and fix the top of the detection instrument. The buffer mechanism at the bottom of the placement plate 5 can buffer the vibration generated in the process of controlling the movement of the bracket body 1, so as to avoid the detection instrument being damaged by large vibration during transportation.

[0037] As a technical optimization solution in the utility model, combined with Figure 8 and Fig. 9 As shown, the utility model further includes a damping multi-section rod 23, which is arranged on the top surface of the movable plate 4. The damping multi-section rod 23 includes a bottom rod 23-1 and a connecting rod 23-2. The lower end of the bottom rod 23-1 is detachably connected to the movable plate 4, the upper end of the bottom rod 23-1 is hinged to one end of the connecting rod 23-2, and the other end of the connecting rod 23-2 is provided with a clamping pressure head 24 for matching the probe. A connecting hole is processed on the movable plate 4 for plug-in connection of the bottom rod 23-1.

[0038] Among them, a damping shaft is set at the hinge of the bottom rod 23-1 and the connecting rod 23-2, and the relative rotation position between the bottom rod 23-1 and the connecting rod 23-2 can be fixed and lasting through the cooperation of the damping shaft, so as to cooperate with the clamping pressure head 24 to realize the clamping action with a fixed posture and stability, and cooperate with the lifting mechanism to realize the scanning detection process of the detection part at the high altitude position by reciprocating intensive movement. It can also perform multiple repetitive detections at a fixed position.

[0039] Furthermore, the number of the connecting rods 23 - 2 configured is at least one. When a plurality of connecting rods 23 - 2 are matched, two adjacent connecting rods 23 - 2 are connected by a damping hinge.

[0040] Among them, the clamping pressure head 24 includes a fixed block 24-1 and two clamping claws 24-2, and the two clamping claws 24-2 are respectively arranged on both sides of the fixed block 24-1. The fixed block 24-1 is fixedly connected to the connecting rod 23-2 on one side facing the connecting rod 23-2, and the other side of the fixed block 24-1 cooperates with the two clamping claws 24-2 to form a clamping groove structure. The two clamping claws 24-2 move closer or farther on both sides of the fixed block 24-1, thereby realizing the adaptive clamping process for probes of different sizes.

[0041] Furthermore, each clamping claw 24-2 is connected to the fixed block 24-1 through at least one telescopic member, and the telescopic member on one clamping claw 24-2 is arranged one by one with the telescopic member on the other clamping claw 24-2, and the two corresponding telescopic members are horizontally arranged in parallel on the fixed block 24-1, and an elastic member is arranged between the two corresponding telescopic members, and when the two telescopic members are in a relatively distant state, the elastic member is in an extended state; when the two telescopic members are in a relatively close state, the elastic member is in a contracted state. The two clamping claws 24-2 move closer to the fixed block 24-1 or away from the fixed block 24-1 under the action of their respective corresponding telescopic members, thereby realizing the process of adapting and clamping probes of different sizes, and the cooperation of the damping multi-section rod 23 can ensure that the probe of the detection instrument is in a long-lasting close contact effect at different areas of the steel structure surface, which is conducive to the effective detection process of the detection instrument.

[0042] The structural connection principle of the fixing block 24 - 1 and the two clamping claws 24 - 2 is the same as the structural connection principle of the existing mobile phone clamping bracket.

[0043] In the utility model, when it is necessary to perform ultrasonic flaw detection on a steel structure at a higher position, the staff can hold the entire device, remove the detection instrument from the top of the placement plate 5 and place it on the top of the movable plate 4, and manually rotate the rotating handle 19 to drive the double-headed screw 22 to rotate, while driving the two sliders and the clamping plate 10 to move in a direction close to each other. The detection instrument is clamped and fixed with the help of the two clamping plates 10, so that the detection instrument is not prone to sliding, shaking and other problems on the top of the movable plate 4.

[0044] Then, by controlling the rotation of the two driving screws 14, the movable plate 4 and the detection instrument placed on the top of it are driven to move upward to the top of the bracket body 1, and the telescopic ends of the electric push rods 7 located on both sides of the bracket body 1 are controlled to extend upward, and the two fixed plates 9, the movable rod 8 and the movable plate 4 are pushed upward together, thereby driving the detection instrument to move upward and performing flaw detection on steel structures at higher positions.

[0045] After the detection instrument is used, the rotating handle 19 can be rotated in the opposite direction to drive the double-headed screw 22 to reverse, so that the two clamping plates 10 can move in the direction away from each other, so that the detection instrument loses the clamping fixation of the two clamping plates 10, and the detection instrument is taken from the top of the movable plate 4 and placed on the top of the placement plate 5 below. With the reverse rotation of the two driving screws 14, the movable plate 4 is driven to move slowly downward until the sponge block 15 at the bottom of the movable plate 4 is tightly abutted against the top of the detection instrument, and the detection instrument can be fixed inside the bracket body 1. At this time, the movable plate 4 located above the detection instrument can be used as a cover plate to protect the top of the detection instrument, so that the bracket body 1 and the movable plate 4 can be directly used as a detection instrument storage mechanism after the detection instrument is used. When the staff needs to perform flaw detection on the steel structure later, they can directly carry the detection instrument together with the bracket body 1 to the working area, avoiding the situation in which the detection instrument cannot detect the steel structure at a higher position due to forgetting to carry the bracket body 1 during the use of the detection instrument.

[0046] When it is necessary to transport the bracket body 1 and the detection instrument to another location for use, the two rotating rods 6 can be rotated in the approaching direction to one side of the bracket body 1, and then the two abutment blocks 13 can be rotated in the approaching direction until the two abutment blocks 13 are rotated to the same straight line. The two abutment blocks 13 are connected and fixed with the help of connecting plates 16 and bolts, and the telescopic ends of the two electric push rods 7 are controlled to extend upward to a specified length. At this time, the two electric push rods 7 can be used as lifting handles in conjunction with the two connected and fixed abutment blocks 13, and the staff can directly hold the bracket body 1, lift it, carry it and transport it, so as to achieve the effect of convenient and quick use of the detection instrument.

[0047] Furthermore, during the transportation of the bracket body 1 and the detection instrument, the vibration generated by the bracket body 1 can be buffered and released through the buffer mechanism, thereby preventing the detection instrument on the top of the placement plate 5 from being subjected to greater vibration, thereby improving the stability and safety performance of the detection instrument during transportation.

[0048] In the present invention, after the detection instrument is placed on the top of the movable plate 4, the probe of the detection instrument is fixed on the damping multi-section rod 23 to ensure that the probe is close to the surface area of ​​the steel structure required for detection, and then the detection process of the probe is carried out.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-state conversion frame adapted for flaw detection of steel structures, comprising a frame body (1), characterized in that: The interior of the support body (1) is provided with a moving plate (4) and a placement plate (5) in order from top to bottom; a clamping mechanism for clamping and fixing the detection instrument is provided at the top of the moving plate (4); a buffer mechanism is provided at the bottom of the placement plate (5); two moving rods (8) are provided at the top of the support body (1); a driving mechanism for driving the moving plate (4) to move up and down is provided at the ends of the two moving rods (8) that are close to each other; and a lifting mechanism for driving the moving rods (8) and the moving plate (4) to move synchronously is provided on both sides of the support body (1).

2. A multi-state conversion frame adapted for steel structure flaw detection according to claim 1, characterized in that: Two groups of telescopic rods (18) are symmetrically installed inside the bracket body (1), and the telescopic ends of the two groups of telescopic rods (18) are respectively connected to the bottom ends of the moving rods (8) adjacent thereto.

3. The multi-state conversion frame adapted for steel structure flaw detection according to claim 1 is characterized in that: Guide grooves (3) are provided on both inner walls of the support body (1), and guide blocks that can move up and down in the guide grooves (3) are installed on both outer walls of the movable plate (4) and the placement plate (5).

4. The multi-state conversion frame adapted for steel structure flaw detection according to claim 1 is characterized in that: The clamping mechanism comprises a groove (21) formed on the top of the movable plate (4), a double-headed screw (22) being rotatably mounted inside the groove (21), two sliders being symmetrically mounted on the outer wall of the double-headed screw (22), a clamping plate (10) being mounted on the top of each of the two sliders, one end of the double-headed screw (22) passing through the movable plate (4) and connected to a rotating handle (19), and a rubber pad (20) and a sponge block (15) being mounted on the top and bottom of the movable plate (4), respectively.

5. The multi-state conversion frame adapted for steel structure flaw detection according to claim 1 is characterized in that: The driving mechanism comprises a driving screw (14) installed at the bottom of the two moving rods (8) at one end close to each other, the two ends of the moving plate (4) respectively cooperate with the outer walls of the two driving screws (14), and the outer walls of the two moving plates (4) at the side away from each other are both installed with a fixing plate (9).

6. A multi-state conversion frame adapted for flaw detection of steel structures according to claim 5, characterized in that: The lifting mechanism comprises two rotating rods (6) rotatably mounted on the bottom of the bracket body (1); the bottom of the bracket body (1) is provided with two notches (12) for the rotating rods (6) to rotate; the tops of the two rotating rods (6) away from the bracket body (1) are both equipped with electric push rods (7); the telescopic ends of the two electric push rods (7) are both rotatably equipped with abutment blocks (13); the tops of the two abutment blocks (13) are respectively abutted against the bottoms of the fixing plates (9) adjacent thereto; and the two abutment blocks (13) can be connected and fixed by means of a connecting plate (16) and bolts.

7. The multi-state conversion frame adapted for steel structure flaw detection according to claim 1 is characterized in that: The buffer mechanism comprises a plurality of springs (11), the plurality of springs (11) being respectively mounted at four corners of the bottom of the placement plate (5), the bottom ends of the plurality of springs (11) being connected to the inner bottom surface of the bracket body (1), and damping rods (17) being mounted inside the plurality of springs (11).

8. A multi-state conversion frame adapted for flaw detection of steel structures according to claim 1, 2, 3, 4, 5, 6 or 7, characterized in that: A damping multi-section rod (23) is arranged on the top surface of the movable plate (4), and the damping multi-section rod (23) comprises a bottom rod (23-1) and a connecting rod (23-2), the lower end of the bottom rod (23-1) is detachably connected to the movable plate (4), the upper end of the bottom rod (23-1) is hinged to one end of the connecting rod (23-2), and the other end of the connecting rod (23-2) is provided with a clamping pressure head (24) that matches the probe.

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