Strength parameter detection device

Abstract

The utility model discloses a strength parameter detection device, and relates to the technical field of strength parameter detection. The device comprises a shell, one end of the top of the shell is fixedly connected with a fixed cylinder seat, the end, away from the shell, of the fixed cylinder seat is detachably connected with a fixed cylinder through threads, the end, away from the fixed cylinder seat, of the fixed cylinder is detachably connected with a supporting cylinder through threads, and a reserved hole is formed in the inner side of the supporting cylinder; a sliding groove is formed in the top of the inner side of the shell, a testing assembly is in clearance fit with the inner side of the sliding groove, a reserved groove is formed in the inner side of the shell and communicates with the sliding groove, and a pushing assembly is installed on the inner side of the reserved groove. According to the utility model, the on-site direct detection mode is used for replacing on-site sampling and back detection, so that the waste of a large amount of manpower and material resources can be reduced, the detection cost is reduced, the detection time can be shortened, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of strength parameter detection, and particularly relates to a strength parameter detection device. Background Art

[0002] Brittleness refers to the property that when an external force reaches a certain limit, the material undergoes sudden failure without warning and without obvious plastic deformation during failure. The mechanical properties of brittle materials are characterized by a compressive strength much greater than the tensile strength, and the ultimate strain value during failure is extremely small. For example, bricks, stones, ceramics, glass, concrete, cast iron, etc. are all brittle materials. Compared with ductile materials, they are quite disadvantageous in resisting impact loads and bearing vibration effects. Therefore, the strength of brittle and quasi-brittle materials is one of the necessary parameters for on-site construction.

[0003] Common strength detection devices on the market need to collect samples into the laboratory, process them into standard samples and then conduct tests according to international (domestic) standards. Its advantages are perfect standards, unified and standardized test procedures, and being recognized at home and abroad. Its disadvantages are high requirements from sampling to the laboratory, and it is very difficult to test the strength of materials in working conditions where sampling is difficult or even impossible. On the other hand, for occasions with low requirements and those who want to quickly know the material strength, laboratory equipment is not portable and cannot meet the requirements. Therefore, it is necessary to propose a strength parameter detection device. To solve the technical problems mentioned in the above patents, a new technical solution is provided by utilizing the material drilling and cutting mechanism. Summary of the Utility Model

[0004] Based on this, a strength parameter detection device is provided to solve the following technical problems proposed in the background art: Common strength detection devices on the market need to collect samples into the laboratory, process them into standard samples and then conduct tests according to international (domestic) standards. Its advantages are perfect standards, unified and standardized test procedures, and being recognized at home and abroad. Its disadvantages are high requirements from sampling to the laboratory, and it is very difficult to test the strength of materials in working conditions where sampling is difficult or even impossible. On the other hand, for occasions with low requirements and those who want to quickly know the material strength, laboratory equipment is not portable and cannot meet the requirements.

[0005] The utility model adopts the following technical scheme:

[0006] The described strength parameter detection device specifically includes a housing. One end of the top of the housing is fixedly connected to a fixed cylinder base. The end of the fixed cylinder base away from the housing is detachably connected to a fixed cylinder body through a thread. The end of the fixed cylinder body away from the fixed cylinder base is detachably connected to a support cylinder through a thread. And a reserved hole is provided inside the support cylinder. The end of the housing away from the support cylinder is fixedly connected to a shoulder rest. One side of the housing is fixedly connected to an operation panel. The bottom of the housing is detachably connected to an external battery. One end of the bottom of the housing near the support cylinder is provided with a lighting lamp. And the lighting lamp is electrically connected to the operation panel and the external battery. A power switch is installed on the outer side of the housing. And the power switch is electrically connected to the operation panel and the external battery. A sliding groove is provided at the top inside the housing. A test component is in clearance fit with the inside of the sliding groove. A reserved groove is provided inside the housing. The reserved groove is communicated with the sliding groove. A propulsion component is installed inside the reserved groove. And the propulsion component is used to drive the test component to move inside the housing.

[0007] Further, the test component includes a slide rail bar, a first motor, a planetary speed reducer, a torque sensor, and a thrust sensor. Slide rail bars are fixedly connected to both sides inside the sliding groove. A first motor is in clearance fit with the end of the inside of the sliding groove away from the support cylinder. The first motor is electrically connected to the operation panel and the external battery. A planetary speed reducer is fixedly connected to the end of the first motor close to the support cylinder. The planetary speed reducer is in clearance fit with the inside of the sliding groove. And the output end of the first motor is inserted into the inside of the planetary speed reducer and is key-connected to the planetary speed reducer. A torque sensor is fixedly connected to the end of the planetary speed reducer away from the first motor. And the output end of the planetary speed reducer is inserted into the inside of the torque sensor and is key-connected to the torque sensor. A thrust sensor is fixedly connected to the end of the torque sensor away from the planetary speed reducer. The output end of the torque sensor penetrates through the inside of the top of the thrust sensor. The bottom of the thrust sensor extends into the reserved groove.

[0008] Further, the test component further includes a bearing housing, a bearing end cover, a first bearing, a rotating rod, and a rotary seal ring. One end of the thrust sensor away from the torque sensor is fixedly connected to the bearing housing. One end of the bearing housing away from the thrust sensor is fixedly connected to the bearing end cover. Both ends inside the bearing housing are fixedly connected with first bearings. The first bearings are fixedly connected with a rotating rod inside, and both ends of the rotating rod extend to the outside of both ends of the bearing housing. One end of the rotating rod close to the torque sensor is inserted into the torque sensor and is key-connected to the torque sensor. The other end of the rotating rod extends to the inside of the fixed cylinder. One end of the bearing end cover away from the bearing housing is fixedly connected with a rotary seal ring, and the rotary seal ring wraps one end of the rotating rod located outside the bearing housing.

[0009] Further, a connection frame is fixedly connected to the outside of the torque sensor, the thrust sensor, and the bearing housing. The connection frame is in clearance fit with the sliding groove. Both sides of the connection frame are provided with sliding grooves, and the sliding grooves are all slidably connected with the slide rail bars.

[0010] Further, the test component further includes a drill chuck and a drill bit. The outside of one end of the rotating rod located inside the fixed cylinder is detachably connected with a drill chuck through threads. A drill bit is installed inside one end of the drill chuck away from the rotating rod. The drill bit and the reserved hole inside the support cylinder are in clearance fit.

[0011] Further, the propulsion component includes a second motor, a propulsion lead screw, a lead screw nut, and a second bearing. The second motor is fixedly connected inside the reserved groove, and the second motor is located at one end of the bottom of the thrust sensor away from the support cylinder. The second motor is electrically connected to the operation panel and the external battery. The output end of the second motor is fixedly connected with a propulsion lead screw. The lead screw nut is fixedly connected inside the bottom of the thrust sensor, and the propulsion lead screw passes through the inside of the lead screw nut and is threadedly connected to the lead screw nut. One end of the propulsion lead screw away from the second motor is fixedly connected with a second bearing, and one end of the second bearing away from the propulsion lead screw is fixedly connected to the inside of the reserved groove.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] A strength parameter detection device provided by the present utility model replaces sampling from the site and bringing it back for detection by directly detecting on-site, thereby being able to reduce a large amount of waste of human and material resources, reduce the detection cost, and at the same time can also shorten the detection duration, thereby improving the detection efficiency. Description of the Drawings

[0014] To more clearly illustrate the solution in the present utility model, the following will give a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of a strength parameter detection device provided by the present utility model;

[0016] Figure 2 It is a schematic diagram of the structure of a test component of a strength parameter detection device provided by the present utility model;

[0017] Figure 3 It is a schematic diagram of the structure of a slide rail bar of a strength parameter detection device provided by the present utility model;

[0018] Figure 4 It is a schematic diagram of the structure of a first motor of a strength parameter detection device provided by the present utility model;

[0019] Figure 5 It is a schematic diagram of the structure of a rotating rod of a strength parameter detection device provided by the present utility model.

[0020] In the drawings, the list of components represented by each reference numeral is as follows:

[0021] 1. Housing; 2. Fixed cylinder base; 3. Fixed cylinder body; 4. Support cylinder; 5. Shoulder rest; 6. Operation panel; 7. External battery; 8. Lighting lamp; 9. Test component; 10. Propulsion component; 11. Slide rail bar; 12. First motor; 13. Planetary reducer; 14. Torque sensor; 15. Thrust sensor; 16. Bearing housing shell; 17. Bearing end cover; 18. First bearing; 19. Rotating rod; 20. Rotary seal ring; 21. Drill chuck; 22. Drill bit; 23. Second motor; 24. Propulsion lead screw; 25. Lead screw nut; 26. Second bearing; 27. Power switch. Specific embodiments

[0022] In order to enable those skilled in the art of this technology to better understand the solution of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.

[0023] As described in the background art, since the commonly used strength detection devices on the market need to collect samples to the laboratory, process them into standard samples and then test them according to international (domestic) standards, its advantages are perfect standards and unified and standardized test processes, which are recognized at home and abroad. Its disadvantages are high requirements from sampling to the laboratory, and it is very difficult to test the strength of materials in working conditions where sampling is difficult or even impossible. On the other hand, for occasions with low requirements and those who want to quickly know the material strength, laboratory equipment is not portable and cannot meet the requirements.

[0024] To solve this technical problem, the utility model provides a strength parameter detection device, which replaces sampling from the site and bringing it back for detection by directly detecting on-site, so as to reduce a large amount of waste of human and material resources, reduce the detection cost, and at the same time can shorten the detection time, thereby improving the detection efficiency.

[0025] Specifically, please refer to Figures 1 - 5 , a strength parameter detection device specifically includes a housing 1. One end of the top of the housing 1 is fixedly connected with a fixed cylinder base 2. The end of the fixed cylinder base 2 away from the housing 1 is detachably connected with a fixed cylinder body 3 by threads. The end of the fixed cylinder body 3 away from the fixed cylinder base 2 is detachably connected with a support cylinder 4 by threads. And a reserved hole is provided inside the support cylinder 4. One end of the housing 1 away from the support cylinder 4 is fixedly connected with a shoulder rest 5. One side of the housing 1 is fixedly connected with an operation panel 6. The bottom of the housing 1 is detachably connected with an external battery 7. One end of the bottom of the housing 1 close to the support cylinder 4 is provided with a lighting lamp 8. And the lighting lamp 8 is electrically connected with the operation panel 6 and the external battery 7. A power switch 27 is installed on the outer side of the housing 1. And the power switch 27 is electrically connected with the operation panel 6 and the external battery 7. A sliding groove is provided at the inner top of the housing 1. A test component 9 is in clearance fit inside the sliding groove. A reserved groove is provided inside the housing 1. The reserved groove is communicated with the sliding groove. A propulsion component 10 is installed inside the reserved groove. And the propulsion component 10 is used to drive the test component 9 to move inside the housing 1.

[0026] To enable those skilled in the art to better understand the solution of the utility model, the technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings.

[0027] Embodiment 1:

[0028] Please refer to Figures 1 - 5, a strength parameter detection device, which includes a housing 1. One end of the top of the housing 1 is fixedly connected with a fixed cylinder base 2. The end of the fixed cylinder base 2 away from the housing 1 is detachably connected with a fixed cylinder body 3 by threads. The end of the fixed cylinder body 3 away from the fixed cylinder base 2 is detachably connected with a support cylinder 4 by threads. And a reserved hole is provided inside the support cylinder 4. One end of the housing 1 away from the support cylinder 4 is fixedly connected with a shoulder rest 5. One side of the housing 1 is fixedly connected with an operation panel 6. The bottom of the housing 1 is detachably connected with an external battery 7. One end of the bottom of the housing 1 close to the support cylinder 4 is equipped with a lighting lamp 8. And the lighting lamp 8 is electrically connected to the operation panel 6 and the external battery 7. A sliding groove is provided inside the top of the housing 1. A test component 9 is arranged in the sliding groove with a clearance fit. A reserved groove is provided inside the housing 1. The reserved groove is communicated with the sliding groove. A propulsion component 10 is installed inside the reserved groove. And the propulsion component 10 is used to drive the test component 9 to move inside the housing 1.

[0029] When in use, hold the housing 1 by hand and move the housing 1 to the area to be measured. Then fit the support cylinder 4 to the area to be measured.

[0030] The front end of the support cylinder 4 is provided with a taper thorn. Facilitating personnel, through the setting of the shoulder rest 5, can further improve the stability of the support cylinder 4, thereby improving the accuracy of the test parameters.

[0031] By turning on the power switch 27, the external battery 7 can be powered, so that the operation panel 6 can be operated.

[0032] The model of the operation panel 6 is set as the sc-200 controller. Through the setting of the operation panel 6, the test component 9 inside the housing 1 can be driven to rotate, and at the same time, the propulsion component 10 inside the housing 1 can be controlled to work. Through the setting of the propulsion component 10, the test component 9 can be driven to move horizontally inside the housing 1, and the end of the test component 9 close to the support cylinder 4 can pass through the reserved hole provided inside the support cylinder 4, and the area to be measured can be tested. Through the setting of the test component 9, the force feedback generated during the test process can be recorded and analyzed, and then the parameters can be displayed to the staff through the setting of the operation panel 6.

[0033] Through the setting of the external battery 7, the operation of the test device can be powered.

[0034] Through the setting of the lighting lamp 8, when the light in the area to be measured is not good, the area to be measured can be illuminated and assist the staff in performing the strength test.

[0035] The test component 9 includes a slide rail bar 11, a first motor 12, a planetary speed reducer 13, a torque sensor 14, and a thrust sensor 15. Slide rail bars 11 are fixedly connected to both sides inside the sliding groove. A first motor 12 is in clearance fit with the end of the sliding groove away from the support cylinder 4. The first motor 12 is electrically connected to the operation panel 6 and the external battery 7. One end of the first motor 12 close to the support cylinder 4 is fixedly connected to a planetary speed reducer 13. The planetary speed reducer 13 is in clearance fit with the inside of the sliding groove, and the output end of the first motor 12 is inserted into the inside of the planetary speed reducer 13 and is key-connected to the planetary speed reducer 13. One end of the planetary speed reducer 13 away from the first motor 12 is fixedly connected to a torque sensor 14, and the output end of the planetary speed reducer 13 is inserted into the inside of the torque sensor 14 and is key-connected to the torque sensor 14. One end of the torque sensor 14 away from the planetary speed reducer 13 is fixedly connected to a thrust sensor 15. The output end of the torque sensor 14 penetrates through the inside of the top of the thrust sensor 15, and the bottom of the thrust sensor 15 extends into the reserved groove.

[0036] The test component 9 further includes a bearing housing 16, a bearing end cover 17, a first bearing 18, a rotating rod 19, and a rotary seal 20. One end of the thrust sensor 15 away from the torque sensor 14 is fixedly connected to a bearing housing 16. One end of the bearing housing 16 away from the thrust sensor 15 is fixedly connected to a bearing end cover 17. First bearings 18 are fixedly connected to both ends inside the bearing housing 16. A rotating rod 19 is fixedly connected inside the first bearings 18, and both ends of the rotating rod 19 extend to the outside of both ends of the bearing housing 16. One end of the rotating rod 19 close to the torque sensor 14 is inserted into the inside of the torque sensor 14 and is key-connected to the torque sensor 14. The other end of the rotating rod 19 extends into the fixed cylinder 3. One end of the bearing end cover 17 away from the bearing housing 16 is fixedly connected to a rotary seal 20, and the rotary seal 20 wraps around one end of the rotating rod 19 located outside the bearing housing 16.

[0037] A connecting frame is fixedly connected to the outside of the torque sensor 14, the thrust sensor 15, and the bearing housing 16. The connecting frame is in clearance fit with the sliding groove. Sliding grooves are formed on both sides of the connecting frame, and the sliding grooves are all in sliding connection with the slide rail bars 11.

[0038] The test component 9 further includes a drill chuck 21 and a drill bit 22. A drill chuck 21 is detachably connected to the outside of one end of the rotating rod 19 inside the fixed cylinder 3 by a thread. A drill bit 22 is installed inside one end of the drill chuck 21 away from the rotating rod 19. The drill bit 22 is in clearance fit with the reserved hole formed inside the support cylinder 4.

[0039] The propulsion assembly 10 includes a second motor 23, a propulsion lead screw 24, a lead screw nut 25, and a second bearing 26. The second motor 23 is fixedly connected to the inner side of the reserved groove, and the second motor 23 is located at one end of the bottom of the thrust sensor 15 away from the support cylinder 4. The second motor 23 is electrically connected to the operation panel 6 and the external battery 7. The output end of the second motor 23 is fixedly connected to the propulsion lead screw 24. The inner side of the bottom of the thrust sensor 15 is fixedly connected to the lead screw nut 25, and the propulsion lead screw 24 passes through the inner side of the lead screw nut 25 and is threadedly connected to the lead screw nut 25. One end of the propulsion lead screw 24 away from the second motor 23 is fixedly connected to the second bearing 26, and one end of the second bearing 26 away from the propulsion lead screw 24 is fixedly connected to the inner side of the reserved groove.

[0040] Specifically: Through the setting of the first motor 12, the shaft inside the planetary reducer 13 can be driven to rotate, and the shaft inside the torque sensor 14 can be driven to rotate synchronously through the output end of the planetary reducer 13 located inside the torque sensor 14. Through the setting of the planetary reducer 13, the rotation speed of the output end of the first motor 12 can be adjusted;

[0041] While the shaft inside the torque sensor 14 is rotating, the rotating rod 19 can be driven to rotate inside the two first bearings 18 arranged inside the bearing housing 16. At the same time, through the connection setting of the rotating rod 19, the drill chuck 21 at the other end can be driven to rotate synchronously, and the drill chuck 21 can drive the drill bit 22 inside to rotate synchronously;

[0042] At the same time, by controlling the second motor 23 to start, the second motor 23 can be driven to drive the propulsion lead screw 24 to rotate inside the reserved groove. With the setting of the second bearing 26, a stable support effect can be provided for the rotation of the propulsion lead screw 24;

[0043] Through the threaded connection setting of the propulsion lead screw 24 and the lead screw nut 25, the bottom of the thrust sensor 15 can be driven to move horizontally inside the reserved groove. Through the connection setting of the thrust sensor 15, the connection frame can be driven to move synchronously inside the sliding groove, so as to drive the entire test assembly 9 to move forward synchronously inside the sliding groove, and drive the drill bit 22 to pass through the reserved hole inside the support cylinder 4, and perform a rotational test on the strength parameters of the area to be measured;

[0044] Through the setting of the thrust sensor 15, the thrust of the drill bit 22 can be recorded in real time. At the same time, through the setting of the torque sensor 14, the torque of the drill bit 22 can be recorded in real time. By combining the two parameters of thrust and torque, the strength parameters of the area to be measured can be obtained;

[0045] Through the settings of the bearing housing shell 16, the bearing end cover 17 inside the bearing housing shell 16, the first bearing 18, and the rotating rod 19, the force feedback by the drill bit 22 during the test can be blocked, so as to avoid the thrust sensor 15 and the torque sensor 14 directly bearing the thrust feedback by the drill bit 22, thus playing a protective effect on the thrust sensor 15 and the torque sensor 14;

[0046] At the same time, through the setting of the rotary seal ring 20, it can be avoided that small stones or other impurities enter the inside of the bearing housing shell 16 during the test, so as to avoid the phenomenon that the parts inside the bearing housing shell 16 are damaged and affect the use;

[0047] It should be noted that both the first motor 12 and the second motor 23 can use servo or stepper motors, aiming to accurately control the rotation speed and the propulsion speed, so as to drill at a constant speed during the detection, in order to obtain more accurate data.

Claims

1. An intensity parameter detection device, comprising a housing (1), characterized in that, One end of the top of the housing (1) is fixedly connected to a fixed cylinder base (2). The end of the fixed cylinder base (2) away from the housing (1) is detachably connected to a fixed cylinder body (3) by threads. The end of the fixed cylinder body (3) away from the fixed cylinder base (2) is detachably connected to a support cylinder (4) by threads. A reserved hole is provided inside the support cylinder (4). One end of the housing (1) away from the support cylinder (4) is fixedly connected to a shoulder rest (5). An operation panel (6) is fixedly connected to one side of the housing (1). An external battery (7) is detachably connected to the bottom of the housing (1). A lighting lamp (8) is installed at one end of the bottom of the housing (1) near the support cylinder (4). The lighting lamp (8) is electrically connected to the operation panel (6) and the external battery (7). A power switch (27) is installed on the outer side of the housing (1). The power switch (27) is electrically connected to the operation panel (6) and the external battery (7). A sliding groove is provided at the inner top of the housing (1). A test component (9) is in clearance fit with the inner side of the sliding groove. A reserved groove is provided inside the housing (1). The reserved groove is communicated with the sliding groove. A propulsion component (10) is installed inside the reserved groove. The propulsion component (10) is used to drive the test component (9) to move inside the housing (1).

2. The intensity parameter detection device according to claim 1, wherein The test component (9) includes a slide rail bar (11), a first motor (12), a planetary speed reducer (13), a torque sensor (14), and a thrust sensor (15). Slide rail bars (11) are fixedly connected to both sides of the inner side of the sliding groove. A first motor (12) is in clearance fit with the inner side of the sliding groove at the end away from the support cylinder (4). The first motor (12) is electrically connected to the operation panel (6) and the external battery (7). A planetary speed reducer (13) is fixedly connected to the end of the first motor (12) near the support cylinder (4). The planetary speed reducer (13) is in clearance fit with the inner side of the sliding groove. The output end of the first motor (12) is inserted into the inner side of the planetary speed reducer (13) and is key-connected to the planetary speed reducer (13). A torque sensor (14) is fixedly connected to the end of the planetary speed reducer (13) away from the first motor (12). The output end of the planetary speed reducer (13) is inserted into the inner side of the torque sensor (14) and is key-connected to the torque sensor (14). A thrust sensor (15) is fixedly connected to the end of the torque sensor (14) away from the planetary speed reducer (13). The output end of the torque sensor (14) penetrates through the inner side of the top of the thrust sensor (15). The bottom of the thrust sensor (15) extends into the reserved groove.

3. The intensity parameter detection device according to claim 2, characterized in that, The test component (9) further includes a bearing housing (16), a bearing end cover (17), a first bearing (18), a rotating rod (19), and a rotary seal ring (20). One end of the thrust sensor (15) far from the torque sensor (14) is fixedly connected to the bearing housing (16). One end of the bearing housing (16) far from the thrust sensor (15) is fixedly connected to the bearing end cover (17). Both ends inside the bearing housing (16) are fixedly connected with the first bearing (18). The first bearing (18) is fixedly connected with the rotating rod (19) inside, and both ends of the rotating rod (19) extend to the outside of both ends of the bearing housing (16). One end of the rotating rod (19) close to the torque sensor (14) is inserted into the torque sensor (14) and is key-connected to the torque sensor (14). The other end of the rotating rod (19) extends into the fixed cylinder (3). One end of the bearing end cover (17) far from the bearing housing (16) is fixedly connected with the rotary seal ring (20), and the rotary seal ring (20) wraps one end of the rotating rod (19) located outside the bearing housing (16).

4. The intensity parameter detection device according to claim 3, characterized in that, A connection frame is fixedly connected to the outside of the torque sensor (14), the thrust sensor (15), and the bearing housing (16). The connection frame is in clearance fit with the sliding groove. Both sides of the connection frame are provided with sliding grooves, and the sliding grooves are in sliding connection with the slide rail strip (11).

5. The strength parameter detection device according to claim 4, characterized in that, The test component (9) further includes a drill chuck (21) and a drill bit (22). The outside of one end of the rotating rod (19) located inside the fixed cylinder (3) is detachably connected with the drill chuck (21) by threads. The drill bit (22) is installed inside one end of the drill chuck (21) far from the rotating rod (19). The drill bit (22) is in clearance fit with a reserved hole opened inside the support cylinder (4).

6. The intensity parameter detection device according to claim 5, wherein The propulsion component (10) includes a second motor (23), a propulsion lead screw (24), a lead screw nut (25), and a second bearing (26). The second motor (23) is fixedly connected inside the reserved groove, and the second motor (23) is located at one end of the bottom of the thrust sensor (15) far from the support cylinder (4). The second motor (23) is electrically connected to the operation panel (6) and the external battery (7). The output end of the second motor (23) is fixedly connected with the propulsion lead screw (24). The lead screw nut (25) is fixedly connected inside the bottom of the thrust sensor (15), and the propulsion lead screw (24) passes through the lead screw nut (25) and is in threaded connection with the lead screw nut (25). One end of the propulsion lead screw (24) far from the second motor (23) is fixedly connected with the second bearing (26), and one end of the second bearing (26) far from the propulsion lead screw (24) is fixedly connected with the inside of the reserved groove.

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