Pile foundation ultrasonic detection device

Abstract

The present invention discloses an ultrasonic detection device for pile foundations, comprising: an ultrasonic pile tester for detecting pile foundations, the ultrasonic pile tester comprising an ultrasonic pile tester main unit, a connecting line, and two transducers; a support frame for assembling a mounting frame, the mounting frame being fixedly mounted on the top of the support frame, the mounting frame comprising a rectangular platform and four arms extending upwardly around the rectangular platform, four connecting rods being fixedly mounted around the upper surface of the rectangular platform, a mounting seat for placing the ultrasonic pile tester main unit being fixedly mounted on the top of the four connecting rods, the mounting seat being provided with a placement slot adapted for the ultrasonic pile tester main unit; and a retracting mechanism for releasing and reeling in the connecting line of the transducer on the mounting frame. The beneficial effects of the present invention are that it can detect pile foundations of relatively deep depths, and the distance between the two transducers can be adjusted according to the distance between the acoustic detection tubes, thereby making the detection device applicable to a wide range of applications.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and in particular to a pile foundation ultrasonic detection device. Background Art

[0002] A deep foundation consisting of a pile and a pile cap connected to the top of the pile, or a single pile foundation consisting of a column connected to the pile base, is referred to as a pile foundation. If the pile body is completely buried in the soil and the bottom of the cap is in contact with the soil, it is called a low-cap pile foundation. If the upper part of the pile body is exposed above ground and the bottom of the cap is above ground, it is called a high-cap pile foundation. Building pile foundations are typically low-cap pile foundations. Pile foundations are widely used in high-rise buildings. Pile foundations require post-construction testing. The main methods for pile foundation testing include static load testing, core drilling, low-strain testing, high-strain testing, and acoustic transmission testing. Compared to other integrity testing methods, acoustic transmission testing allows for comprehensive and detailed testing and has virtually no other limitations. The acoustic transmission method utilizes the principle of sound wave transmission to test the condition of the concrete medium in the pile body. This method is suitable for testing the integrity of piles with a diameter of 0.6 m or greater and with two or more acoustic detection tubes embedded during the pouring process. In recent years, the use of ultrasonic testing equipment has greatly increased testing efficiency. This detection method is to obtain a set of (profile) acoustic data, analyze the data, eliminate outliers and calculate the average value (sound speed and amplitude), and then compare the data of each measuring point with the average value. If it exceeds a certain range (such as a 6dB drop in amplitude), it is considered that there is a defect at that point.

[0003] Patent document CN202210798744.7 discloses a pile foundation inspection device, which includes: a support plate for providing support; a clamping mechanism disposed on the support plate to clamp the outer peripheral wall of the pile foundation; a non-metallic ultrasonic detector; two lifting mechanisms, evenly spaced along the circumference of the support plate, with the output ends of the two lifting mechanisms correspondingly connected to the transmitting transducer and receiving transducer of the non-metallic ultrasonic detector, respectively, with the transmitting transducer and the receiving transducer facing each other; the clamping mechanism includes: two or more holding arcs, evenly spaced along the circumference of the support plate, disposed on the underside of the support plate and slidingly connected to the support plate in a radial direction; a drive column, extending through the support plate and slidingly connected to the support plate in an axial direction, with the lower and upper ends of the drive column extending out of the support plate; and a connecting rod, one end of which is hinged to the upper side of the drive column and the other end of which is hinged to the holding arc. This application improves the efficiency of pile foundation inspection.

[0004] However, the lifting mechanism of the transducer has a very limited lifting range, making it unsuitable for deep pile foundations. Furthermore, the distance between the two transducers cannot be adjusted, so the transducers can only be inserted into two acoustic detection tubes at a specific distance in the pile foundation, making the detection device's applicability very limited. Alternatively, the leads of the two transducers can be manually pulled to fit into two acoustic detection tubes at different distances. This poses a problem. In the case of super-high-rise buildings or bridges, the pile body has a large diameter and a long length. If the angle between the two transducers is too large, the lead will resist when stretching the two transducers, damaging the wires inside the lead. The lead also needs to be designed to be very long, increasing material costs.

[0005] Therefore, it is necessary to provide a new pile foundation detection device to solve the above technical problems. Summary of the Invention

[0006] In order to solve the technical problem that the distance between the two transducers of the pile foundation detection device in the prior art cannot be adjusted and the transducer can only be inserted into the acoustic detection pipe to a very effective depth, resulting in a very low scope of application, the present invention provides a pile foundation ultrasonic detection device.

[0007] The pile foundation ultrasonic detection device provided by the present invention includes: an ultrasonic pile detector for detecting pile foundations, the ultrasonic pile detector including an ultrasonic pile detector main unit, a connecting line and two transducers; a support frame for assembling a mounting frame, the mounting frame being fixedly installed on the top of the support frame, the mounting frame including a rectangular platform and four upwardly extending support arms located around the rectangular platform, four connecting rods being fixedly installed around the upper surface of the rectangular platform, a mounting seat for placing the ultrasonic pile detector main unit being fixedly installed on the top of the four connecting rods, a retracting mechanism for releasing and reeling in the connecting line of the transducer; an adjusting mechanism being installed on the support frame, the adjusting mechanism being used to adjust the distance between the two transducers according to the distance between the two acoustic detection tubes on the pile foundation.

[0008] Preferably, the support frame includes a base, four pillars and a top seat, the four pillars are fixedly installed around the top of the base, the top seat is fixedly installed on the top ends of the four pillars, and the bottom of the rectangular platform is fixedly connected to the top seat.

[0009] Preferably, the rewinding mechanism includes two winding rollers, a machine base, a winding motor, a main gear and two transmission gears, and the two ends of the two winding rollers are respectively fixedly installed with a first central axis tube and a second central axis tube, the two first central axis tubes and the two second central axis tubes are rotatably connected to the four support arms, the machine base is fixedly installed on the outside of the two support arms through a connecting piece and is located on the outside of the rectangular platform, the winding motor is fixedly installed on the top of the machine base, the main gear is fixedly sleeved on the output shaft of the winding motor, and the two transmission gears are respectively fixedly sleeved on the two first central axis tubes, and the two transmission gears are meshed with the main gear, and the two winding rollers are both provided with a connecting hole, and the two connecting holes are respectively connected to the two second central axis tubes, and one end of the connecting line on the two transducers passes through the connecting hole and extends into the second central axis tube.

[0010] Preferably, two fixed blocks are fixedly installed on the outer sides of the two arms near the second central axis tube, and a connecting wire connector is fixedly installed on each of the fixed blocks and in the corresponding second central axis tube. The connecting wire of each transducer is electrically connected to the connecting wire connector in the corresponding second central axis tube, and the connecting wire connector includes an outer insulating column, and a conductive ring and a conductive column are led out from one end of the outer insulating column. The end of the conductive column is provided with a hemispherical groove, and the end of the conductive ring is provided with an annular groove. A conductive ball is provided between the hemispherical grooves of the two connecting wire connectors on the fixed block and the corresponding second central axis tube to electrically connect the two conductive columns. A conductive ball is also provided between the annular grooves of the two connecting wire connectors on the fixed block and the corresponding second central axis tube to electrically connect the two conductive rings. The connecting wire connectors on the two fixed blocks are also electrically connected to the ultrasonic pile measuring instrument host through lines.

[0011] Preferably, the adjustment mechanism includes two struts, two wheel brackets, two groove wheels and a driving mechanism, the two struts are respectively hinged on both sides of the top seat, the two wheel brackets are respectively fixedly mounted on the ends of the two struts away from the top seat, the two groove wheels are respectively rotatably mounted on the two wheel brackets, the connecting lines of the two transducers are respectively passed around the two groove wheels, and the driving mechanism is assembled on the support frame, and the driving mechanism is used to drive the two struts to swing to adjust the distance between the two groove wheels.

[0012] Preferably, the driving mechanism includes two fixed plates, a screw, two vertical limit rods, an adjusting motor, a lifting block, two sliders and two hinged rods, the two fixed plates are horizontally fixedly installed between the four pillars, and the two fixed plates are spaced apart in an upper and lower order, the screw is rotatably installed between the two fixed plates, the two vertical limit rods are fixedly installed between the two fixed plates and are symmetrically distributed about the screw, the adjusting motor is fixedly installed on the top of the base, the output shaft of the adjusting motor is fixedly connected to the bottom end of the screw, the lifting block is threadedly sleeved on the screw, the two sliders are respectively fixedly installed on both sides of the lifting block and are respectively slidably sleeved on the two vertical limit rods, one end of the two hinged rods is respectively hinged to the two sliders, and the other end of the two hinged rods is respectively hinged to the two support rods.

[0013] Preferably, a meter is mounted on one side of the wheel bracket, and the rotating shaft of the meter is coaxial with the sheave, that is, when the connecting line of the transducer moves, the sheave is driven to rotate, and the meter records the length of the moving connecting line.

[0014] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0015] Preferably, a fixing rod is fixedly mounted on the support rod, and a second limiting ring sleeved on the connecting line is fixedly mounted on the fixing rod.

[0016] Preferably, the bottom of the base is equipped with four universal wheels, which are distributed in a rectangular array. Threaded sleeves are fixedly installed at the four corners of the bottom of the base. A threaded rod is installed on the inner thread of the threaded sleeve, and a non-slip foot pad is fixedly installed on the bottom end of the threaded rod.

[0017] Compared with related technologies, the pile foundation detection device provided by the present invention has the following beneficial effects:

[0018] The present invention provides a pile foundation ultrasonic detection device:

[0019] By arranging a mounting frame and a winding mechanism on the support frame, the two transducers can be raised and lowered, and deeper pile foundations can be detected; and the distance between the two transducers can be adjusted according to the distance between the acoustic detection tubes through the adjustment mechanism, so that the detection device is applicable to a wider range. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a preferred embodiment of the pile foundation ultrasonic detection device provided by the present invention;

[0021] Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown;

[0022] Figure 3 for Figure 1 An enlarged schematic diagram of part B is shown;

[0023] Figure 4 for Figure 1 An enlarged schematic diagram of part C is shown;

[0024] Figure 5 for Figure 1 An enlarged schematic diagram of part D is shown;

[0025] Figure 6 Schematic diagram of the three-dimensional structure of the support frame in the present invention;

[0026] Figure 7 Schematic diagram of the three-dimensional structure of the mounting frame of the present invention;

[0027] Figure 8 Schematic diagram of the front view of the retractable mechanism of the present invention;

[0028] Figure 9 It is a side view structural diagram of the retractable mechanism and the reciprocating mechanism in the present invention;

[0029] Figure 10 This is a front view assembly drawing of the reciprocating mechanism and the mounting frame of the present invention;

[0030] Figure 11 Schematic diagram of the side structure of the first limiting ring (second limiting ring) in the present invention;

[0031] Figure 12 Schematic top view of the pile foundation and the acoustic detection tube in the present invention;

[0032] Figure 13 It is a side cross-sectional view of two connecting wire connectors connected together in the present invention;

[0033] Figure 14 Schematic diagram of the three-dimensional structure of the connecting wire connector in the present invention.

[0034] Numbers in the figure: 1, base; 2, support; 3, top seat; 4, mounting frame; 5, winding roller; 6, first central axis tube; 7, second central axis tube; 8, transducer; 9, connecting line; 10, machine base; 11, winding motor; 12, main gear; 13, transmission gear; 14, connecting line connector; 15, support rod; 16, wheel bracket; 17, groove pulley; 18, meter counter; 19, fixing plate; 20, screw; 21, vertical limit rod; 22, adjusting motor; 23, lifting block; 24, slider; 25, hinged rod; 26, Mounting seat; 27. Connecting rod; 28. Ultrasonic pile tester main unit; 29. ​​Support seat; 30. Reciprocating screw; 31. Horizontal limit rod; 32. Moving motor; 33. Moving block; 34. Mounting rod; 35. First limit ring; 36. Fixing rod; 37. Second limit ring; 38. Universal wheel; 39. Threaded sleeve; 40. Threaded rod; 41. Anti-slip foot pad; 42. Pile foundation; 43. Acoustic testing tube; 44. Fixing block; 141. External insulating column; 142. Conductive ring; 143. Conductive column; 144. Conductive ball. DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] Please refer to Figure 1-14 ,in, Figure 1 A schematic structural diagram of a preferred embodiment of the pile foundation ultrasonic detection device provided by the present invention; Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown; Figure 3 for Figure 1 An enlarged schematic diagram of part B is shown; Figure 4 for Figure 1 An enlarged schematic diagram of part C is shown; Figure 5 for Figure 1 An enlarged schematic diagram of part D is shown; Figure 6 Schematic diagram of the three-dimensional structure of the support frame in the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the mounting frame of the present invention; Figure 8 Schematic diagram of the front view of the retractable mechanism of the present invention; Figure 9 It is a side view structural diagram of the retractable mechanism and the reciprocating mechanism in the present invention; Figure 10 This is a front view assembly drawing of the reciprocating mechanism and the mounting frame of the present invention; Figure 11 Schematic diagram of the side structure of the first limiting ring (second limiting ring) in the present invention; Figure 12 Schematic top view of the pile foundation and the acoustic detection tube in the present invention; Figure 13 It is a side cross-sectional view of two connecting wire connectors connected together in the present invention; Figure 14 Schematic diagram of the three-dimensional structure of the connecting wire connector in the present invention.

[0037] The pile foundation ultrasonic detection device includes: an ultrasonic pile detector for detecting pile foundations, the ultrasonic pile detector including an ultrasonic pile detector main unit 28, a connecting line and two transducers 8; a support frame for assembling a mounting frame 4, the mounting frame 4 being fixedly mounted on the top of the support frame, the mounting frame including a rectangular platform and four arms extending upward around the rectangular platform, four connecting rods 27 being fixedly mounted around the upper surface of the rectangular platform, and a mounting seat 26 for placing the ultrasonic pile detector main unit 28 being fixedly mounted on the top of the four connecting rods 27, the mounting seat 26 being provided with a placement groove adapted for the ultrasonic pile detector main unit 28; a retracting mechanism for releasing and reeling in the connecting line 9 of the transducer 8; and an adjusting mechanism being equipped on the support frame, the adjusting mechanism being used to adjust the distance between the two transducers 8 according to the distance between the two acoustic detection tubes 43 on the pile foundation 42.

[0038] It should be noted that the two transducers 8 in the present invention are cylindrical and radially vibrate without radial directionality, one of which is a transmitting transducer and the other is a receiving transducer.

[0039] The support frame includes a base 1, four pillars 2 and a top seat 3. The four pillars 2 are fixedly installed around the top of the base 1, the top seat 3 is fixedly installed on the top ends of the four pillars 2, and the bottom of the rectangular platform is fixedly connected to the top seat 3.

[0040] The rewinding mechanism includes two rewinding rollers 5, a machine base 10, a rewinding motor 11, a main gear 12 and two transmission gears 13. The two ends of the two rewinding rollers 5 are respectively fixedly mounted with a first central axis tube 6 and a second central axis tube 7. The two first central axis tubes 6 and the two second central axis tubes 7 are rotatably connected to the four arms. The machine base 10 is fixedly mounted on the outside of the two arms and is located on the outside of the rectangular platform through a connecting piece. The rewinding motor 11 is fixedly mounted on the top of the machine base 10. The main gear 12 is fixedly sleeved on the rewinding motor 11. On the output shaft, the two transmission gears 13 are respectively fixedly mounted on the two first central axis tubes 6, and the two transmission gears 13 are both engaged with the main gear 12. The two winding rollers 5 are both provided with connecting holes, and the two connecting holes are respectively connected with the two second central axis tubes 7. One end of the connecting wire 9 on the two transducers 8 passes through the connecting hole and extends into the second central axis tube 7. The connecting wire 9 of the transducer 8 is retracted and released through the retracting mechanism, so as to detect deeper pile foundations 42, thereby improving the scope of application of the detection device.

[0041] Two fixing blocks 44 are fixedly installed on the outside of the two arms close to the second central axis tube, and a connecting wire connector 14 is fixedly installed on each of the fixing blocks 44 and in the corresponding second central axis tube 7, that is, there are four connecting wire connectors in total, which are electrically connected in pairs. The connecting wire 9 of each transducer 8 is electrically connected to the connecting wire connector 14 in the corresponding second central axis tube 7, and the connecting wire connector 14 includes an outer insulating column 141, and one end of the outer insulating column 141 leads to a conductive ring 142 and a conductive column 143. The end of the conductive column 143 is provided with a hemispherical groove, and the end of the conductive ring 142 is provided with an annular groove. A conductive ball 144 is provided between the hemispherical grooves of the two connecting wire connectors on the fixed block and the corresponding second central axis tube. , so that the two conductive posts 143 are electrically connected, and a conductive ball 144 is also provided between the annular grooves of the two connecting wire connectors on the fixed block and the corresponding second central axis tube, so that the two conductive rings 142 are electrically connected, and the connecting wire connectors 14 on the two fixed blocks 44 are also electrically connected to the ultrasonic pile testing instrument host 28 through the line. Two wires are separated from the connecting wire and are electrically connected to the conductive posts and the conductive ring in the second central axis tube respectively. Similarly, the ultrasonic pile testing instrument host also separates two wires and is electrically connected to the conductive posts and the conductive ring in the connecting wire connectors on the two fixed blocks. In the process of the first winding of the connecting wire 9, the connecting wire connector 14 can ensure that the transducer 8 and the ultrasonic pile testing instrument host 28 maintain a good conductive state without affecting the rotation of the winding roller 5.

[0042] The adjusting mechanism includes two struts 15, two wheel brackets 16, two sheaves 17 and a driving mechanism. The two struts 15 are respectively hinged on both sides of the top seat 3, and the two wheel brackets 16 are respectively fixedly mounted on the ends of the two struts 15 away from the top seat 3. The two sheaves 17 are respectively rotatably mounted on the two wheel brackets 16. The connecting lines 9 of the two transducers 8 are respectively bypassed around the two sheaves 17. The driving mechanism is assembled on the supporting frame. The driving mechanism is used to drive the two struts 15 to swing to adjust the distance between the two sheaves 17. The distance between the two transducers 8 can be adjusted according to the distance between the acoustic detection tubes 43 through the adjusting mechanism, thereby improving the applicability of the device.

[0043] The driving mechanism includes two fixed plates 19, a screw 20, two vertical limit rods 21, an adjustment motor 22, a lifting block 23, two sliders 24 and two hinged rods 25. The two fixed plates 19 are fixedly installed horizontally between the four pillars 2, and the two fixed plates are spaced apart from each other. The screw 20 is rotatably installed between the two fixed plates 19. The two vertical limit rods 21 are fixedly installed between the two fixed plates 19 and are symmetrically distributed about the screw. The adjustment motor 22 is fixedly installed on the top of the base 1. The output shaft of the adjustment motor 22 It is fixedly connected to the bottom end of the screw rod 20, and the lifting block 23 is threadedly sleeved on the screw rod 20. The two sliders 24 are respectively fixedly installed on both sides of the lifting block 23 and are respectively slidably sleeved on the two vertical limit rods 21. One end of the two hinged rods 25 is respectively hinged on the two sliders 24, and the other ends of the two hinged rods 25 are respectively hinged to the two support rods 15. The two support rods 15 can be raised or lowered by the driving mechanism, thereby adjusting the distance between the two groove wheels 17, and then adjusting the distance between the two transducers 8.

[0044] A meter counter 18 is mounted on one side of the wheel bracket 16 , and the rotating shaft of the meter counter 18 is coaxial with the sheave 17 , that is, when the connecting line 9 of the transducer 8 moves, the sheave 17 is driven to rotate, and the meter counter 18 records the length of the moving connecting line 9 .

[0045] The mounting frame 4 is provided with a reciprocating mechanism, which is used to enable the connecting line 9 to be evenly wound layer by layer on the winding roller 5 when the connecting line 9 is wound. The reciprocating mechanism includes two support seats 29, a reciprocating screw rod 30, a transverse limiting rod 31, a moving motor 32, a moving block 33, two mounting rods 34 and two first limiting rings 35. The two support seats 29 are fixedly mounted on the rectangular platform, the reciprocating screw rod 30 is rotatably mounted between the two support seats 29, the transverse limiting rod 31 is fixedly mounted between the two support seats 29 and is located below the reciprocating screw rod, the moving block 33 is threadedly sleeved on the reciprocating screw rod 30 and slidably sleeved on the transverse limiting rod 31, and the moving motor 32 is fixedly mounted on the rectangular platform. It is fixedly installed on the outside of any one of the support seats 29, and the output shaft of the moving motor 32 is fixedly connected to one end of the reciprocating screw rod 30. One end of the two mounting rods 34 is respectively fixedly installed on both sides of the moving block 33, and the two first limiting rings 35 are respectively fixedly installed on the other end of the two mounting rods 34. The two first limiting rings 35 are symmetrically arranged and are respectively sleeved on the two connecting lines. The reciprocating mechanism can adjust the winding position of the connecting line 9 on the winding roller 5 when the winding roller 5 winds up the connecting line 9, so that the two connecting lines 9 can be tightly and evenly wound on the two winding rollers 5 layer by layer, avoiding the uneven winding of the connecting line 9 by the two winding rollers 5, which causes the two transducers 8 to not be at the same height position.

[0046] A fixing rod 36 is fixedly installed on the support rod 15, and a second limiting ring 37 that is sleeved on the connecting line is fixedly installed on the fixing rod 36. The connecting line 9 passes through the second limiting ring 37 and the first limiting ring 35, which can prevent the connecting line 9 from falling off the groove wheel 17 when the connecting line 9 is retracted or released.

[0047] The bottom of the base 1 is equipped with four universal wheels 38, which are distributed in a rectangular array. The device can be easily moved through the universal wheels 38. Threaded sleeves 39 are fixedly installed at the four corners of the bottom of the base 1. A threaded rod 40 is installed on the internal thread of the threaded sleeve 39. The bottom end of the threaded rod 40 is fixedly installed with an anti-slip pad 41. By rotating the four anti-slip pads 41, the four threaded rods 40 are rotated and lowered until the anti-slip pads 41 are pressed against the top surface of the pile foundation 42 and the universal wheels 38 leave the ground, so that the device can be stably placed.

[0048] It is worth noting that the circuits, electronic components and modules involved in the present invention are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0049] The working principle of the pile foundation detection device provided by the present invention is as follows:

[0050] This solution also includes an electric control cabinet, which is installed on the equipment. When in use, each electrical device can be started and operated through the electric control cabinet. The power connection method of each electrical device is an existing mature technology and is well known to people in this field, so it will not be described in detail here.

[0051] When in use, the acoustic detection tube 43 pre-buried on the pile foundation 42 to be tested is filled with water, and the device is placed on the pile foundation 42 to be tested so that it is located approximately in the middle between the two acoustic detection tubes 43;

[0052] The distance between the two transducers 8 is adjusted according to the distance between the two acoustic detection tubes 43. That is, by starting the adjustment motor 22, the screw 20 is driven to rotate, thereby raising the lifting block 23, thereby supporting the two support rods 15 through the two hinged rods 25, and the two transducers 8 are moved away from each other through the two grooved wheels 17 and the connecting line 9. The position of the device is fine-tuned by the universal wheel 38, and finally the two transducers 8 are located just above the two acoustic detection tubes 43.

[0053] At this time, the four anti-skid pads 41 can be rotated to rotate and lower the four threaded rods 40 until the anti-skid pads 41 are pressed against the top surface of the pile foundation 42 and the universal wheels 38 leave the ground. At this time, the device is stable on the pile foundation 42.

[0054] Next, the winding motor 11 can be started and the moving motor 32 and the meter counter 18 can be started synchronously. The winding motor 11 drives the two transmission gears 13 through the main gear 12 to drive the two first central axis tubes 6 to rotate, so that the two winding rollers 5 synchronously release the connecting wire 9, so that the two transducers 8 extend into the two acoustic detection tubes 43 until they fall to the bottom of the acoustic detection tube 43 (the force can be felt by observing whether the connecting wire 9 is tightened and manually pulling the connecting wire 9 at the top of the acoustic detection tube 43 to determine whether the transducer 8 has fallen to the bottom, and the length of the released connecting wire 9 is recorded by the meter counter 18);

[0055] During the process of releasing the connecting wire 9, the moving motor 32 drives the reciprocating screw 30 to rotate, thereby causing the moving block 33 to reciprocate on the reciprocating screw 30 and driving the two first limiting rings 35 to reciprocate through the mounting rod 34. The moving positions of the two first limiting rings 35 correspond to the positions of the two winding rollers 5 at which the connecting wire 9 is released.

[0056] Next, the lines on the connecting wire connectors 14 on the two fixing blocks 44 are connected to the corresponding sockets of the ultrasonic pile testing instrument host 28, and the cross section of the pile foundation 42 at the current depth position is detected by the ultrasonic pile testing instrument host 28 and the transducer 8;

[0057] Furthermore, by starting the winding motor 11 to wind up the two connecting wires, the height of the two transducers 8 is raised, and the detection position of the pile foundation 42 is changed, the moving motor 32 is started at the same time to make the two first limit rings 35 move synchronously, so that the two connecting wires 9 are tightly and evenly wound on the two winding rollers 5 layer by layer, so as to avoid uneven winding of the connecting wires 9 by the two winding rollers 5, which may cause the two transducers 8 to be at different heights.

[0058] Furthermore, during the first winding process of the connecting wire 9, the two second central axis tubes 7 rotate accordingly, and the conductive ring 142 and the conductive post 143 on the connecting wire connector 14 therein respectively roll on the conductive ring 142 and the conductive post 143 on the connecting wire connector 14 on the fixed block 44 via the corresponding conductive balls 144, thereby maintaining a good conductive state.

[0059] Until the two transducers 8 detect the top of the pile foundation 42, turn off the ultrasonic pile tester main unit 28, reel in the connecting line 9 via the reeling motor 11 to raise the transducer 8 to the outside of the acoustic detection tube 43, and lower the lifting block 23 via the control motor 22 to lower the two support rods 15 and restore to the initial state;

[0060] Finally, the anti-skid pad 41 is rotated in the reverse direction to make the universal wheel 38 contact the ground, and the anti-skid pad 41 is lifted off the ground, and the vehicle can be moved by the universal wheel 38 .

[0061] Compared with related technologies, the pile foundation detection device provided by the present invention has the following beneficial effects:

[0062] The present invention provides a pile foundation ultrasonic detection device. By arranging a mounting frame 4 and a winding mechanism on a support frame, two transducers 8 can be raised and lowered, and a pile foundation 42 with a deeper depth can be detected. Moreover, the distance between the two transducers 8 can be adjusted according to the distance between the acoustic detection tubes 43 through an adjustment mechanism, so that the detection device is applicable to a wider range.

[0063] It should be noted that the equipment structure and drawings of the present invention mainly describe the principles of the present invention. In terms of the technology of the design principle, the settings of the device's power mechanism, power supply system and control system are not fully described. However, on the premise that those skilled in the art understand the principles of the above invention, they can clearly know the details of its power mechanism, power supply system and control system.

[0064] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pile foundation ultrasonic detection device, characterized in that: include: An ultrasonic pile tester for detecting pile foundations, comprising an ultrasonic pile tester main unit, a connecting line, two transducers, and a support frame for assembling a mounting frame, wherein the mounting frame is fixedly mounted on the top of the support frame, the mounting frame comprises a rectangular platform and four arms extending upwardly around the rectangular platform, four connecting rods are fixedly mounted on the four sides of the upper surface of the rectangular platform, and a mounting seat for placing the ultrasonic pile tester main unit is fixedly mounted on the top of the four connecting rods; the mounting frame is provided with a retracting mechanism for releasing and rewinding the connecting line of the transducer; the support frame is equipped with an adjustment mechanism, which is used to adjust the distance between the two transducers according to the distance between the two acoustic detection tubes on the pile foundation; the support frame comprises a base, four pillars and a top seat, the four pillars are fixedly mounted around the top of the base, the top seat is fixedly mounted on the top of the four pillars, and the bottom of the rectangular platform is fixedly connected to the top seat; the retracting mechanism comprises two rewinding rollers, a machine base, a rewinding motor, a main gear and two transmission gears, and the two ends of the two rewinding rollers are respectively fixedly mounted with a first central axis tube and a second central axis tube. The transmission gears are fixedly mounted on the two first and second central axis tubes, and the two transmission gears are meshed with the main gears. The two winding rollers are provided with a connecting hole, and the two connecting holes are respectively connected to the two second central axis tubes. One end of the connecting wire on the two transducers passes through the connecting hole and extends into the second central axis tube; the adjusting mechanism includes two struts, two wheel brackets, two groove wheels and a driving mechanism, the two struts are respectively hinged on both sides of the top seat, the two wheel brackets are respectively fixedly mounted on the ends of the two struts away from the top seat, the two groove wheels are respectively rotatably mounted on the two wheel brackets, the connecting wires of the two transducers are respectively bypassed around the two groove wheels, and the driving mechanism is assembled on the support frame, and the driving mechanism is used to drive the two struts to rotate to adjust the distance between the two groove wheels.

2. The pile foundation ultrasonic detection device according to claim 1, characterized in that: Two fixed blocks are fixedly installed on the outer sides of the two arms near the second central axis tube, and a connecting wire connector is fixedly installed on each of the fixed blocks and in the corresponding second central axis tube. The connecting wire of each transducer is electrically connected to the connecting wire connector in the corresponding second central axis tube, and the connecting wire connector includes an outer insulating column, and a conductive ring and a conductive column are led out from one end of the outer insulating column. The end of the conductive column is provided with a hemispherical groove, and the end of the conductive ring is provided with an annular groove. A conductive ball is provided between the hemispherical grooves of the two connecting wire connectors on the fixed block and the corresponding second central axis tube to electrically connect the two conductive columns. A conductive ball is also provided between the annular grooves of the two connecting wire connectors on the fixed block and the corresponding second central axis tube to electrically connect the two conductive rings. The connecting wire connectors on the two fixed blocks are also electrically connected to the ultrasonic pile measuring instrument host through lines.

3. The pile foundation ultrasonic detection device according to claim 1, characterized in that: The driving mechanism includes two fixed plates, a screw, two vertical limit rods, an adjusting motor, a lifting block, two sliders and two hinged rods. The two fixed plates are horizontally fixedly installed between the four pillars, and the two fixed plates are spaced apart in an upper and lower order. The screw is rotatably installed between the two fixed plates. The two vertical limit rods are fixedly installed between the two fixed plates and are symmetrically distributed about the screw. The adjusting motor is fixedly installed on the top of the base, and the output shaft of the adjusting motor is fixedly connected to the bottom end of the screw. The lifting block is threadedly sleeved on the screw, and the two sliders are respectively fixedly installed on both sides of the lifting block and are respectively slidably sleeved on the two vertical limit rods. One end of the two hinged rods is respectively hinged on the two sliders, and the other end of the two hinged rods is respectively hinged to the two support rods.

4. The pile foundation ultrasonic detection device according to claim 1, characterized in that: A meter counter is mounted on one side of the wheel bracket, and a rotating shaft of the meter counter is coaxial with the grooved wheel.

5. The pile foundation ultrasonic detection device according to claim 1, characterized in that: Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

6. The pile foundation ultrasonic detection device according to claim 5, characterized in that: A fixing rod is fixedly mounted on the support rod, and a second limiting ring sleeved on the connecting line is fixedly mounted on the fixing rod. The connecting line passes through the second limiting ring and the first limiting ring.

7. The pile foundation ultrasonic detection device according to claim 1, characterized in that: The bottom of the base is equipped with four universal wheels, which are distributed in a rectangular array. Threaded sleeves are fixedly installed at the four corners of the bottom of the base. A threaded rod is installed on the inner thread of the threaded sleeve, and a non-slip foot pad is fixedly installed on the bottom end of the threaded rod.

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