An ultrasonic detection device and detection method for buried engineering pile foundations

Abstract

The present invention discloses an ultrasonic detection device and a detection method for buried engineering pile foundations, and the present invention relates to the technical field of pile foundation detection. The ultrasonic detection device and detection method for buried engineering pile foundations include a cable, a first acoustic wave probe, and a second acoustic wave probe. The outside of the cable includes a lifting component and a supporting component. The lifting component is used to lift the cable, and the supporting component is used to support the lifting component; the lifting component includes a winding wheel, a rubber ring, a motor, and a first rotating rod. One outer wall of the rubber ring is installed on the inner wall of the winding wheel, and one end of the first rotating rod is installed on the output end of the motor, so that the moving speed of the acoustic wave probe group is always within a certain range, and it is no longer necessary for the measuring personnel to manually pull the cable to control the rising or lowering speed of the acoustic wave probe group, so that the moving speed of the acoustic wave probe group remains uniform and is convenient to adjust, the measurement process is smoother, and it is more convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of pile foundation detection, and specifically to an ultrasonic detection device and detection method for buried engineering pile foundations. Background Art

[0002] Ultrasonic testing, also known as ultrasonic inspection, uses ultrasonic technology for inspection work and is one of the five conventional non-destructive testing methods. The advantages of ultrasonic flaw detection are large detection thickness, high sensitivity, fast speed, low cost, harmless to the human body, and can locate and quantify defects. A deep foundation composed of a pile and a pile cap (referred to as the cap) connecting the top of the pile or a single-pile foundation connecting a column and a pile foundation is referred to as a pile foundation. Among them, when accepting buried engineering pile foundations, most are detected by ultrasonic detection devices. During the use of current ultrasonic detection devices, most require manual pulling of the cable of the acoustic probe to wind up the cable, and use a wireless lifting counter to detect the current lifting speed of the cable, and use a signal lamp to prompt the operator whether the pulling is too fast, and the pulled-up cable is scattered on the ground, making the entire detection process very troublesome. Therefore, an ultrasonic detection device and detection method for buried engineering pile foundations are proposed. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides an ultrasonic detection device and detection method for buried engineering pile foundations, which solves the problem that during the use of current ultrasonic detection devices, most require manual pulling of the cable of the acoustic probe to wind up the cable, and use a wireless lifting counter to detect the current lifting speed of the cable, and use a signal lamp to prompt the operator whether the pulling is too fast, and the pulled-up cable is scattered on the ground, making the entire detection process very troublesome.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: An ultrasonic detection device for buried engineering pile foundations includes a cable, an acoustic probe one, and an acoustic probe two. The outside of the cable includes a lifting component and a support component. The lifting component is used to lift the cable, and the support component is used to support the lifting component.

[0005] The lifting component includes a winding wheel, a rubber ring, a motor, and a rotating rod one. One outer wall of the rubber ring is installed on the inner wall of the winding wheel. One end of the rotating rod one is installed on the output end of the motor, and the other end of the rotating rod one is installed on the outer wall of the winding wheel. The lifting component also includes a crank and a wire winding roller. One end of the crank is installed on one outer wall of the winding wheel. One end of the cable is installed on one outer wall of the wire winding roller. The cable is wound around the outer wall of the wire winding roller.

[0006] Preferably, the lifting component further includes a driving wheel, a belt, a driven wheel, and a second rotating rod. The outer wall of the first rotating rod is installed on the inner wall of the driving wheel. One end of the first rotating rod penetrates through the driving wheel. The driving wheel and the driven wheel are connected by belt drive. The outer wall of the second rotating rod is installed on the inner wall of the driven wheel. One end of the second rotating rod is installed on the outer wall of the wire winding roller.

[0007] Preferably, the lifting component further includes a first gear, a second gear, a third rotating rod, a first roller, a measuring rope, a second roller, and a fourth rotating rod. The first gear meshes with the second gear. One side outer wall of the second gear is connected to one end of the third rotating rod. The other end of the third rotating rod is installed on one side outer wall of the first roller. One end of the measuring rope is installed on one side outer wall of the first roller. The other end of the measuring rope is installed on one side outer wall of the second roller. One side outer wall of the second roller is connected to one end of the fourth rotating rod.

[0008] Preferably, the support component includes a first support rod, a piston, a sealing ring, a second support rod, and a valve. One side outer wall of the first support rod is connected to the inner wall of the second support rod through the sealing ring. One end of the first support rod is installed on one side outer wall of the piston. The outer wall of the piston is connected to the inner wall of the second support rod. One side outer wall of the valve is installed on the inner wall of the second support rod.

[0009] Preferably, the support component further includes a first spring, a first sliding rod, a guide ring, a sliding rope, and a second spring. One end of the first spring is installed on the inner wall of the second support rod. The other end of the first spring is installed on one side outer wall of the first sliding rod. One side outer wall of the first sliding rod is installed on the inner wall of the second support rod. The outer wall of the guide ring is installed on the inner wall of the second support rod. The outer wall of the sliding rope is connected to the outer wall of the guide ring. One end of the sliding rope is installed on one side outer wall of the first sliding rod.

[0010] Preferably, the support component further includes a positioning rod, a support leg, a movable rod, a rubber pad, a first magnet, and a second magnet. One end of the second spring is installed on the inner wall of the second support rod. The other end of the second spring is installed on one side outer wall of the positioning rod. One end of the sliding rope is connected to one side outer wall of the positioning rod. The outer wall of the positioning rod is connected to the inner wall of the support leg.

[0011] Preferably, the outer wall of the movable rod is installed on the inner wall of the second support rod. The outer wall of the movable rod is connected to the inner wall of the support leg. One side outer wall of the rubber pad is installed on one side outer wall of the support leg. One side outer wall of the first magnet is installed on the inner wall of the support leg. One side outer wall of the second magnet is installed on the outer wall of the positioning rod. The first magnet and the second magnet are magnetically attracted to each other.

[0012] Preferably, an external guiding component is further included in the cable, and the guiding component is used for guiding the cable.

[0013] The present invention also provides an ultrasonic detection method for buried engineering pile foundations, including the following steps:

[0014] S1. Pour tap water into the sonic logging tube, lower the acoustic wave probe group into the corresponding sonic logging tube, and place the guiding component at the mouth of the sonic logging tube;

[0015] S2. Adjust the height of the first support rod, unfold the support legs and reinforce them through the positioning rod;

[0016] S3. Start the motor to rotate counterclockwise, lift the cable at a constant speed, and measure the current length of the cable through the measuring rope;

[0017] S4. Analyze the results measured by the acoustic wave probe group to detect the quality of the engineering pile foundation.

[0018] Preferably, the moving speed of the cable is between 0 - 0.5 m / s.

[0019] The present invention provides an ultrasonic detection device and detection method for buried engineering pile foundations. Compared with the prior art, the following beneficial effects are achieved:

[0020] (1). For the ultrasonic detection device and detection method for buried engineering pile foundations, by setting the cable, the first acoustic wave probe, the second acoustic wave probe, the take-up reel, the crank, the winding roller, the rubber ring, the motor, the first rotating rod, the driving wheel, the belt, the driven wheel, the second rotating rod, the first gear, the second gear, the third rotating rod, the first roller, the measuring rope, the second roller, and the fourth rotating rod, by sequentially placing the first acoustic wave probe and the second acoustic wave probe into the sonic logging tube filled with tap water, then starting the motor to drive the first rotating rod to rotate clockwise, so that the cable is released from the winding roller and is released at a constant speed through the take-up reel. By installing a rubber ring on the take-up reel, the rubber ring can play a role in clamping the cable and increasing the friction force. By controlling the gear of the motor to control the rising and lowering speeds of the first acoustic wave probe and the second acoustic wave probe, the moving speed of the acoustic wave probe group is always within the range, and it is no longer necessary for the measuring personnel to manually pull the cable to control the rising or lowering speed of the acoustic wave probe group, making the moving speed of the acoustic wave probe group keep uniform and convenient to adjust, the measurement process is smoother, and it is more convenient to use.

[0021] (2) The ultrasonic detection device and detection method for buried engineering pile foundations can adjust the position of the support rod 1 by pulling it after opening the valve before measurement. At the same time, the support leg can flip with the movable rod under the action of the spiral spring until the rubber pad touches the ground, so that the support rod 2 can obtain better support force, enabling better support during the measurement process and allowing its height to be adjusted according to different situations, making it more convenient to use.

[0022] (3) The ultrasonic detection device and detection method for buried engineering pile foundations can place the support plate 1 on the sound measuring tube after lowering the acoustic wave probe group into the sound measuring tube. The support plate 1 provides support force for the support frame, and the support frame provides support force for the guide wheel, enabling the guide wheel to guide the cable, ensuring smooth movement of the cable without friction with the sound measuring tube mouth, avoiding the situation where the outer protective layer of the cable is often damaged due to friction with the sound measuring tube mouth, resulting in data transmission failures. At the same time, there is no need to store the guide wheel and its components separately, and there is no need to take out and place the guide wheel and its components during detection, making the detection process smoother and the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the overall structural schematic diagram of the present invention;

[0024] Figure 2 is the side view structural diagram of the support rod 2 of the present invention;

[0025] Figure 3 is the top view structural diagram of the roller 1 of the present invention;

[0026] Figure 4 is the front view structural diagram of the sliding rod 1 of the present invention;

[0027] Figure 5 is the top view structural diagram of the guide ring of the present invention;

[0028] Figure 6 is the side view structural diagram of the support rod 2 of the present invention;

[0029] Figure 7 is the side view structural diagram of the support plate 1 of the present invention;

[0030] Figure 8 is the front view structural diagram of the driven wheel of the present invention;

[0031] Figure 9 is the enlarged view of A of the present invention;

[0032] Figure 10 This is an enlarged view of Invention B.

[0033] In the figure: 1. Cable; 11. First acoustic wave probe; 12. Second acoustic wave probe; 13. Take-up reel; 14. Crank; 15. Winding roller; 16. Rubber ring; 2. Motor; 21. First rotating rod; 22. Driving wheel; 23. Belt; 24. Driven wheel; 25. Second rotating rod; 26. First gear; 27. Second gear; 28. Third rotating rod; 29. First roller; 210. Measuring rope; 211. Second roller; 212. Fourth rotating rod; 3. First support rod; 31. Piston; 32. Sealing ring; 33. Second support rod; 34. Valve; 35. First spring; 36. First sliding rod; 37. Guide ring; 38. Sliding rope; 39. Second spring; 310. Positioning rod; 4. Support leg; 41. Movable rod; 42. Rubber pad; 43. First magnet; 44. Second magnet; 5. Guide pulley; 51. Support frame; 52. First support plate; 53. Rubber block; 54. Second support plate; 55. Third magnet; 56. Fourth magnet; 57. Handle. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1 - 10 , the present invention provides two technical solutions:

[0036] Embodiment 1

[0037] An ultrasonic detection device for buried engineering pile foundations includes a cable 1, a first acoustic wave probe 11, and a second acoustic wave probe 12. The outside of the cable 1 includes a lifting component and a support component. The lifting component is used to lift the cable 1, and the support component is used to support the lifting component;

[0038] The lifting component includes a winding wheel 13, a rubber ring 16, a motor 2, and a first rotating rod 21. One outer wall of the rubber ring 16 is fixedly installed on the inner wall of the winding wheel 13. The outer wall of the rubber ring 16 is slidably connected to the outer wall of the cable 1. One end of the first rotating rod 21 is fixedly installed on the output end of the motor 2 through a coupling. The other end of the first rotating rod 21 is fixedly installed on the outer wall of the winding wheel 13. The lifting component further includes a crank 14 and a winding roller 15. One end of the crank 14 is fixedly installed on one outer wall of the winding wheel 13. One end of the cable 1 is fixedly installed on one outer wall of the winding roller 15. The cable 1 is slidably wound around the outer wall of the winding roller 15. The lifting component further includes a driving wheel 22, a belt 23, a driven wheel 24, and a second rotating rod 25. The outer wall of the first rotating rod 21 is fixedly installed on the inner wall of the driving wheel 22. One end of the first rotating rod 21 penetrates through the outer wall of the driving wheel 22 and extends to the outside of the driving wheel 22. The driving wheel 22 is drivingly connected to the driven wheel 24 through the belt 23. The outer wall of the second rotating rod 25 is fixedly installed on the inner wall of the driven wheel 24. One end of the second rotating rod 25 is fixedly installed on the outer wall of the winding roller 15. The lifting component further includes a first gear 26, a second gear 27, a third rotating rod 28, a first roller 29, a measuring rope 210, a second roller 211, and a fourth rotating rod 212. The first gear 26 meshes with the second gear 27. One outer wall of the second gear 27 is fixedly connected to one end of the third rotating rod 28. The other end of the third rotating rod 28 is fixedly installed on one outer wall of the first roller 29. One end of the measuring rope 210 is fixedly installed on one outer wall of the first roller 29. The other end of the measuring rope 210 is fixedly installed on one outer wall of the second roller 211. The measuring rope 210 is slidably wound around the outer walls of the first roller 29 and the second roller 211. One outer wall of the second roller 211 is fixedly connected to one end of the fourth rotating rod 212;

[0039] The support component includes a first support rod 3, a piston 31, a sealing ring 32, a second support rod 33, and a valve 34. The outer wall of one side of the first support rod 3 is hermetically connected to the inner wall of the second support rod 33 through the sealing ring 32. One end of the first support rod 3 is fixedly installed on the outer wall of one side of the piston 31. The outer wall of the piston 31 is slidably connected to the inner wall of the second support rod 33. The outer wall of the side where the piston 31 contacts the second support rod 33 is hermetically arranged. The outer wall of one side of the valve 34 is fixedly installed on the inner wall of the second support rod 33. The support component further includes a first spring 35, a first sliding rod 36, a guide ring 37, a sliding rope 38, and a second spring 39. One end of the first spring 35 is fixedly installed on the inner wall of the second support rod 33, and the other end of the first spring 35 is fixedly installed on the outer wall of one side of the first sliding rod 36. The outer wall of one side of the first sliding rod 36 is slidably installed on the inner wall of the second support rod 33. One end of the first sliding rod 36 penetrates through the outer wall of the second support rod 33 and extends into the interior of the second support rod 33. The end of the first sliding rod 36 located inside the second support rod 33 is T-shaped. The outer wall of the guide ring 37 is fixedly installed on the inner wall of the second support rod 33. The outer wall of the sliding rope 38 is slidably connected to the outer wall of the guide ring 37. One end of the sliding rope 38 is fixedly installed on the outer wall of one side of the first sliding rod 36. The support component further includes a positioning rod 310, a support leg 4, a movable rod 41, a rubber pad 42, a first magnet 43, and a second magnet 44. One end of the second spring 39 is fixedly installed on the inner wall of the second support rod 33, and the other end of the second spring 39 is fixedly installed on the outer wall of one side of the positioning rod 310. One end of the sliding rope 38 is fixedly connected to the outer wall of one side of the positioning rod 310. The outer wall of the positioning rod 310 is slidably connected to the inner wall of the support leg 4. The outer wall of the movable rod 41 is hingedly installed on the inner wall of the second support rod 33 through a scroll spring. The outer wall of the movable rod 41 is fixedly connected to the inner wall of the support leg 4. The outer wall of one side of the rubber pad 42 is fixedly installed on the outer wall of one side of the support leg 4. The outer wall of one side of the first magnet 43 is fixedly installed on the inner wall of the support leg 4. The outer wall of one side of the second magnet 44 is fixedly installed on the outer wall of the positioning rod 310. The first magnet 43 and the second magnet 44 are magnetically attracted to each other.

[0040] When the cam 33 is in the closed position, the piston 31 is kept in the closed position by pressing the valve 34 and then the piston 31 is moved upward. Figure 6 The position shown, at the same time, the positioning rod 310 pops out under the action of the spring 2 39 and is stuck in the support leg 4, thereby fixing the position of the support leg 4, so that the support rod 2 33 can obtain better supporting force, so that better support can be obtained during the measurement process. By placing the acoustic wave probe 11 and the acoustic wave probe 2 12 in the acoustic detection tube filled with tap water in turn, Then start the motor 2 to drive the rotating rod 1 21 to rotate clockwise, and the rotating rod 1 21 drives the driven wheel 24 to rotate through the driving wheel 22 and the belt 23, so that the driven wheel 24 drives the winding roller 15 to rotate through the rotating rod 2 25, so that the cable 1 is released from the winding roller 15 and is released at a uniform speed through the reel 13. When the sonic probe 1 11 and the sonic probe 2 12 are lowered to the bottom of the sonic detection tube, turn off the motor 2, record the current reading of the metering rope 210, and then start the motor 2 to drive the rotating rod 25 to rotate counterclockwise, and the rotating rod 1 21 drives the driven wheel 24 to rotate counterclockwise through the driving wheel 22 and the belt 23, so that the winding roller 15 rotates counterclockwise to reel in the cable 1. A rubber ring 16 is installed on the reeling wheel 13 so that the rubber ring 16 can clamp the cable 1 and increase the friction. At the same time, the rotating rod 1 21 drives the gear 1 26 to rotate, the gear 1 26 drives the gear 2 27 to rotate, the gear 2 27 drives the rotating rod 3 28 to rotate, and the rotating rod 3 28 drives the roller 1 29 to rotate, so that the metering rope 210 is reeled from the roller 2 211 to the roller 1 29. The rising and lowering speeds of the sonic probe 1 11 and the sonic probe 2 12 are controlled by controlling the gear position of the motor 2, so that the moving speed of the sonic probe group is always within the range.

[0041] Example 2

[0042] The technical solution of this embodiment different from that of the first embodiment includes: An external guiding component is further included for the cable 1. The guiding component includes a guide wheel 5, a support frame 51, a first support plate 52, a rubber block 53, a second support plate 54, a third magnet 55, a fourth magnet 56, and a grip 57. The inner wall of the guide wheel 5 is movably installed on the outer wall of the support frame 51 through a bearing. One side outer wall of the support frame 51 is fixedly installed on one side outer wall of the first support plate 52. The inner wall of the first support plate 52 is slidably connected to the outer wall of the grip 57. One end of the grip 57 penetrates through the outer wall of the first support plate 52 and extends into the interior of the first support plate 52. One end of the grip 57 is fixedly connected to one side outer wall of the second support plate 54. One side outer wall of the rubber block 53 is fixedly installed on one side outer wall of the second support plate 54. One side outer wall of the rubber block 53 abuts against the outer wall of the cable 1. One side outer wall of the third magnet 55 is installed on the inner wall of the second support plate 54. One side outer wall of the fourth magnet 56 is installed on the inner wall of the first support plate 52. The third magnet 55 and the fourth magnet 56 are magnetically attracted to each other. The outer wall of the second support plate 54 is slidably connected to the inner wall of the first support plate 52. A round hole is provided on one side outer wall of the first support plate 52, and the round hole is adapted to the cable 1.

[0043] During use, after the acoustic probe group is lowered into the acoustic detection tube, place the first support plate 52 on the acoustic detection tube, and then pull the grip 57 to the side away from the first support plate 52, so that the third magnet 55 and the fourth magnet 56 are attracted to each other, thereby causing the second support plate 54 to move the rubber block 53 away from the side where the cable 1 is located. The first support plate 52 provides a supporting force to the support frame 51, and the support frame 51 provides a supporting force to the guide wheel 5, enabling the guide wheel 5 to guide the cable 1, allowing the cable 1 to move smoothly without friction with the acoustic detection tube mouth.

[0044] The embodiment of the present invention also provides an ultrasonic detection method for buried engineering pile foundations, including the following steps:

[0045] S1. Pour tap water into the acoustic detection tube, lower the acoustic probe group into the corresponding acoustic detection tube, and place the guiding component at the acoustic detection tube mouth;

[0046] S2. Adjust the height of the first support rod 3, unfold the support legs 4 and reinforce them through the positioning rod 310;

[0047] S3. Start the motor 2 to rotate counterclockwise, lift the cable 1 at a constant speed, the moving speed of the cable 1 is between 0 - 0.5 m / s, and measure the current length of the cable 1 through the measuring rope 210;

[0048] S4. Analyze the measurement results.

[0049] Meanwhile, the content not described in detail in this specification belongs to the well-known prior art of those skilled in the art.

[0050] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0051] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic detection device for buried engineering pile foundations, comprising a cable (1), a first ultrasonic probe (11), and a second ultrasonic probe (12), characterized in that: The exterior of the cable (1) includes a lifting assembly for lifting the cable (1), a supporting assembly for supporting the lifting assembly, and a guiding assembly for guiding the cable (1); The lifting assembly includes a reel (13), a rubber ring (16), a motor (2), and a rotating rod (21). One side outer wall of the rubber ring (16) is mounted on the inner wall of the reel (13). The outer wall of the rubber ring (16) is slidably connected to the outer wall of the cable (1). One end of the rotating rod (21) is mounted on the output end of the motor (2). The other end of the rotating rod (21) is mounted on the outer wall of the reel (13). The lifting assembly also includes a crank (14) and a winding roller (15). One end of the crank (14) is mounted on the outer wall of the reel (13). One end of the cable (1) is mounted on the outer wall of the winding roller (15). The cable (1) is wound on the outer wall of the winding roller (15). The lifting assembly also includes gear one (26), gear two (27), rotating rod three (28), roller one (29), metering rope (210), roller two (211), and rotating rod four (212). Gear one (26) is meshed with gear two (27). One side outer wall of gear two (27) is connected to one end of rotating rod three (28). The other end of rotating rod three (28) is installed on one side outer wall of roller one (29). One end of metering rope (210) is installed on one side outer wall of roller one (29). The other end of metering rope (210) is installed on one side outer wall of roller two (211). One side outer wall of roller two (211) is connected to one end of rotating rod four (212). Rotating rod one (21) can drive gear one (26) to rotate. The lifting assembly further includes a driving wheel (22), a belt (23), a driven wheel (24), and a second rotating rod (25). The outer wall of the first rotating rod (21) is mounted on the inner wall of the driving wheel (22). One end of the first rotating rod (21) passes through the driving wheel (22). The driving wheel (22) and the driven wheel (24) are connected to each other through the belt (23). The outer wall of the second rotating rod (25) is mounted on the inner wall of the driven wheel (24). One end of the second rotating rod (25) is mounted on the outer wall of the winding roller (15). The support assembly includes a support rod (3), a piston (31), a sealing ring (32), a support rod (33), and a valve (34). The outer wall of one side of the support rod (3) is connected to the inner wall of the support rod (33) through the sealing ring (32). One end of the support rod (3) is installed on the outer wall of one side of the piston (31). The outer wall of the piston (31) is connected to the inner wall of the support rod (33). The outer wall of one side of the valve (34) is installed on the inner wall of the support rod (33).

2. The ultrasonic detection device for buried engineering pile foundation according to claim 1, characterized in that: The support assembly further includes a spring 1 (35), a sliding rod 1 (36), a guide ring (37), a sliding rope (38), and a spring 2 (39). One end of the spring 1 (35) is mounted on the inner wall of the support rod 2 (33), and the other end of the spring 1 (35) is mounted on the outer wall of one side of the sliding rod 1 (36). The outer wall of one side of the sliding rod 1 (36) is mounted on the inner wall of the support rod 2 (33). The outer wall of the guide ring (37) is mounted on the inner wall of the support rod 2 (33). The outer wall of the sliding rope (38) is connected to the outer wall of the guide ring (37). One end of the sliding rope (38) is mounted on the outer wall of one side of the sliding rod 1 (36). The support assembly further includes a positioning rod (310), a support leg (4), a movable rod (41), a rubber pad (42), a magnet one (43), and a magnet two (44); one end of the spring two (39) is mounted on the inner wall of the support rod two (33); the other end of the spring two (39) is mounted on the outer wall of one side of the positioning rod (310); one end of the sliding rope (38) is connected to the outer wall of one side of the positioning rod (310); and the outer wall of the positioning rod (310) is connected to the inner wall of the support leg (4); The outer wall of the movable rod (41) is mounted on the inner wall of the supporting rod (33), the outer wall of the movable rod (41) is connected to the inner wall of the supporting leg (4), one side outer wall of the rubber pad (42) is mounted on one side outer wall of the supporting leg (4), one side outer wall of the magnet (43) is mounted on the inner wall of the supporting leg (4), one side outer wall of the magnet (44) is mounted on the outer wall of the positioning rod (310), and the magnet (43) and the magnet (44) are magnetically attracted to each other.

3. The ultrasonic detection device for buried engineering pile foundation according to claim 1, characterized in that: The guide assembly includes a guide wheel (5), a support frame (51), a support plate 1 (52), a rubber block (53), a support plate 2 (54), a magnet 3 (55), a magnet 4 (56), and a handle (57). The inner wall of the guide wheel (5) is movably mounted on the outer wall of the support frame (51) through a bearing. One side outer wall of the support frame (51) is fixedly mounted on one side outer wall of the support plate 1 (52). The inner wall of the support plate 1 (52) is slidably connected to the outer wall of the handle (57). One end of the handle (57) passes through the outer wall of the support plate 1 (52) and extends to the interior of the support plate 1 (52). One end of the handle (57) is fixed to the outer wall of the support plate 2 (54). The outer wall of one side of the rubber block (53) is fixedly mounted on the outer wall of one side of the support plate (54), the outer wall of one side of the rubber block (53) is in contact with the outer wall of the cable (1), the outer wall of one side of the magnet (55) is mounted on the inner wall of the support plate (54), the outer wall of one side of the magnet (56) is mounted on the inner wall of the support plate (52), the magnet (55) and the magnet (56) are magnetically attracted to each other, the outer wall of the support plate (54) and the inner wall of the support plate (52) are slidably connected, a circular hole is opened on the outer wall of one side of the support plate (52), and the circular hole is adapted to the cable (1), so that the guide wheel (5) can guide the cable (1).

4. The detection method of an ultrasonic detection device for buried engineering pile foundation according to claim 2, characterized in that: The following steps are involved: S1. Pour tap water into the acoustic testing pipe, lower the acoustic wave probe assembly into the corresponding acoustic testing pipe, and place the guide assembly at the acoustic testing pipe opening; S2, adjusting the height of the support rod 1 (3), unfolding the support legs (4) and reinforcing them with the positioning rod (310); S3, turning on the motor (2) to rotate it counterclockwise, lifting the cable (1) at a constant speed, and measuring the current length of the cable (1) using the measuring rope (210); S4. Analyze the measurement results.

5. The detection method of an ultrasonic detection device for buried engineering pile foundation according to claim 4, characterized in that: The moving speed of the cable (1) is between 0 and 0.5 m / s.

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