Four-rail cable synchronous take-up and pay-off device for foundation pile integrity detection

Abstract

The invention discloses a four-rail cable synchronous take-up and pay-off device for foundation pile integrity detection, and relates to the technical field of cable take-up and pay-off, the four-rail cable synchronous take-up and pay-off device comprises a cable rack, a mounting table is arranged at the lower end of the cable rack, a stabilizing table is arranged at the lower end of the mounting table, and two rotating rods are arranged between the front inner wall and the rear inner wall of the stabilizing table; rotating rings are arranged between the two ends of the two sets of rotating rods and the inner wall of the stabilizing table correspondingly, two sets of mounting frames are arranged in the middles of the two sets of rotating rods correspondingly, supporting legs are arranged at the lower ends of the four sets of mounting frames correspondingly, ground nails are arranged at the lower ends of the four sets of supporting legs correspondingly, and third threaded sleeves are arranged on the upper portions of the interiors of the supporting legs correspondingly; and third threaded rods are arranged at the lower ends of the third threaded sleeves and located below the interiors of the supporting legs. According to the four-rail cable synchronous take-up and pay-off device for foundation pile integrity detection, the device can be supported more stably, and the detection process is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of cable winding and unwinding, and particularly relates to a four-rail cable synchronous winding and unwinding device for pile integrity detection. Background Art

[0002] Pile foundation is one of the main foundation types adopted in engineering buildings such as high-rise buildings, factories, bridges, ports and docks, and belongs to the scope of concealed works. Its quality directly affects the safety of the entire building. When detecting the construction quality of pile foundations, it is necessary to detect the integrity of the pile foundation, and a cable winding and unwinding device is required during the detection process.

[0003] When the existing cable winding and unwinding device is in use, it is usually inconvenient to fix the device, difficult to maintain the balance of the device, or the support for the device is insufficient, and it is easy to shake or even fall, which has a certain adverse impact on the pile foundation detection process. To solve the deficiencies of the existing technology, we propose a four-rail cable synchronous winding and unwinding device for pile integrity detection. Summary of the Invention

[0004] The main purpose of the present invention is to provide a four-rail cable synchronous winding and unwinding device for pile integrity detection, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A synchronous retracting and unreeling device for four-track cable used in integrity detection of foundation piles, including a cable rack. An installation platform is arranged at the lower end of the cable rack, and a stabilizing platform is arranged at the lower end of the installation platform. Two groups of rotating rods are arranged between the front and rear inner walls of the stabilizing platform. Rotating rings are arranged between the two ends of the two groups of rotating rods and the inner wall of the stabilizing platform respectively. Two groups of installation frames are arranged in the middle of the two groups of rotating rods. Support legs are arranged at the lower ends of the four installation frames. Ground nails are arranged at the lower ends of the four support legs. Above the inner part of the support legs, there are third threaded sleeves. At the lower part of the inner part of the support legs, third threaded rods are arranged at the lower ends of the third threaded sleeves. A group of fourth motors are arranged inside each installation frame. Each group of fourth motors is respectively connected to the upper end of a group of third threaded sleeves. Telescopic connecting rods are arranged at the upper ends of the two groups of rotating rods. Rotating heads are arranged in the middle of the two groups of telescopic connecting rods. An installation plate is arranged above the middle of the inner part of the second guiding roller. A third motor is arranged at the upper end of the installation plate. A second bevel gear is arranged below the third motor and below the installation plate. A second threaded sleeve is arranged in the middle of the lower end of the installation plate. A first bevel gear is arranged on the outer wall of the second threaded sleeve. The first bevel gear meshes with the second bevel gear. Second threaded rods are arranged at both ends of the second threaded sleeve. The ends of the two second threaded rods are respectively connected to the rear ends of a group of rotating heads.

[0007] Preferably, a fixing frame is arranged at the upper end of the bottom of the cable rack. A four-track cable reel is arranged in the middle of the fixing frame. Connecting shafts are arranged on both sides of the four-track cable reel. The two connecting shafts pass through the middle of the side wall of the fixing frame and are connected to the inner side wall of the cable rack. A first motor is arranged on the outer wall of one side of the cable rack. The first motor is connected to the end of a group of connecting shafts. A meter counter is arranged on the outer wall of the other side of the cable rack. The meter counter is connected to the other group of connecting shafts. Two groups of first guiding rollers are arranged in front of the four-track cable reel at the front side of the upper end of the fixing frame. Two telescopic frame plates are arranged at the front end of the installation platform. A movable frame is arranged at the front ends of the two telescopic frame plates. Rotating discs are arranged in the middle of the side walls at the front ends of the movable frame. Two second guiding rollers are arranged between the side walls of the two rotating discs. A first threaded rod is arranged in the middle of the rear end of the movable frame. A first threaded sleeve is arranged at the rear end of the first threaded rod. A second motor is arranged inside the installation platform at the rear end of the first threaded sleeve.

[0008] Preferably, a rotating interface is arranged between the rotating ring and the inner wall of the stabilizing platform. The rotating ring is rotatably connected to the inner wall of the stabilizing platform through the arranged rotating interface. The rotating rod is rotatably connected to the inner wall of the stabilizing platform through the arranged rotating ring.

[0009] Preferably, a rotating interface is provided between the outer wall of the second threaded sleeve and the mounting plate. The second threaded sleeve is rotatably connected to the mounting plate through the provided rotating interface. The two second threaded rods are respectively threadedly connected to the inner walls on both sides of the second threaded sleeve, and the threads on the outer walls of the two second threaded rods are reverse.

[0010] Preferably, a rotating interface is provided between the rotating head and the inner wall of the upper end of the telescopic connecting rod. The rotating head is rotatably connected to the inner wall of the upper end of the telescopic connecting rod through the provided rotating interface, and the telescopic connecting rod can be telescopically moved.

[0011] Preferably, the support leg is a telescopic hollow square tube. A rotating interface is provided between the upper end of the third threaded sleeve and the lower end of the mounting frame. The upper end of the third threaded sleeve is rotatably connected to the lower end of the mounting frame through the provided rotating interface. The third threaded rod is threadedly connected to the inner wall of the third threaded sleeve, and the lower end of the third threaded rod is fixedly connected to the inner wall of the lower end of the support leg.

[0012] Preferably, a rotating interface is provided between the first guiding roller and the second guiding roller and the side walls of the fixed frame and the rotating disc respectively. The first guiding roller and the second guiding roller are rotatably connected to the side walls of the fixed frame and the rotating disc respectively through the provided rotating interfaces.

[0013] Preferably, a rotating interface is provided between the rotating disc and the side wall of the movable frame. The rotating disc is rotatably connected to the side wall of the movable frame through the provided rotating interface. A rotating interface is provided between the rear end of the first threaded sleeve and the outer wall of the mounting table. The rear end of the first threaded sleeve is rotatably connected to the outer wall of the mounting table through the provided rotating interface. The first threaded rod is threadedly connected to the first threaded sleeve.

[0014] Preferably, the four-track cable reel is fixedly connected to the connecting shaft. A rotating hole is provided between one end of the connecting shaft and the side wall of the fixed frame. One end of the connecting shaft is rotatably connected to the side wall of the fixed frame through the provided rotating hole. A rotating interface is provided between the other end of the connecting shaft and the side wall of the cable rack. The other end of the connecting shaft is rotatably connected to the cable rack through the provided rotating interface. The meter is an electronic meter, and the meter is electrically connected to the connecting shaft. A signal transmitter is provided inside the meter.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, the provided mounting table and four sets of support legs can stably support the device. During the process of pile foundation detection, the device will not shake or tip over. The rotating rod inside the mounting table can adjust the angles of the two sets of support legs on both sides, and the support legs can also adjust their lengths. The support legs provide better support for the mounting table and, likewise, for the device, making the device more stable during use.

[0017] 2. In the present invention, the provided first threaded sleeve and second guiding roller can better guide the cable, enabling the four-track cable reel to more conveniently wind and unwind the cable. The provided telescopic frame plate can also allow the movable frame to move back and forth, adjusting the front-back position distance between the second guiding roller and the mounting table. The provided rotating disk can also make the two sets of second guiding rollers rotate in the middle of the movable frame, making the process of pile foundation detection more convenient.

[0018] 3. In the present invention, the provided connecting shaft and meter can more conveniently measure the released cable. The meter is an electronic meter that can automatically calculate the length of the released cable and transmit it to the computer, making the detection process more efficient and fast, and making the process of pile foundation detection simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of the present invention;

[0020] Figure 2 is the exploded schematic diagram of the connection structure of the second guiding roller of the present invention;

[0021] Figure 3 is the internal structural schematic diagram of the stabilizing table of the present invention;

[0022] Figure 4 is the schematic diagram of the connection structure of the support legs of the present invention;

[0023] Figure 5 is the schematic diagram of the connection structure of the second threaded sleeve of the present invention;

[0024] Figure 6 is the exploded internal structural schematic diagram of the support legs of the present invention;

[0025] In the figure: 1. Cable rack; 2. Fixed rack; 3. Four-rail cable reel; 4. Connecting shaft; 5. First motor; 6. First guiding roller; 7. Metering device; 8. Installation table; 9. Telescopic frame plate; 10. Second guiding roller; 11. Stabilizing table; 12. Support leg; 13. Movable rack; 14. Rotating disk; 15. First threaded rod; 16. First threaded sleeve; 17. Second motor; 18. Mounting plate; 19. Third motor; 20. Second threaded sleeve; 21. Second threaded rod; 22. Rotating rod; 23. Rotating ring; 24. Installation frame; 25. Telescopic connecting rod; 26. Rotating head; 27. First bevel gear; 28. Second bevel gear; 29. Third threaded sleeve; 30. Third threaded rod; 31. Fourth motor; 32. Ground nail. Detailed implementation manners

[0026] To make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with the specific implementation manners.

[0027] As Figures 1 - 6As shown in the figure, the cable rack 1 is used to install the cable winding device. An installation platform 8 is provided at the lower end of the cable rack 1. The installation platform 8 is used to install the cable rack 1. A stabilizing platform 11 is provided at the lower end of the installation platform 8. The stabilizing platform 11 is used to keep the cable rack 1 stable. Two groups of rotating rods 22 are arranged between the front and rear inner walls of the stabilizing platform 11. Rotating rings 23 are arranged between the two ends of the two groups of rotating rods 22 and the inner wall of the stabilizing platform 11 respectively. A rotating interface is arranged between the rotating ring 23 and the inner wall of the stabilizing platform 11. The rotating ring 23 can rotate on the inner wall of the stabilizing platform 11 through the arranged rotating interface. The rotating rod 22 rotates on the inner wall of the stabilizing platform 11 through the arranged rotating ring 23. Two groups of mounting frames 24 are arranged in the middle of the two groups of rotating rods 22. Support legs 12 are provided at the lower ends of the four mounting frames 24. The support legs 12 are telescopic hollow square tubes. The support legs 12 are used to support and fix the stabilizing platform 11. Ground nails 32 are provided at the lower ends of the four support legs 12. The ground nails 32 facilitate the fixation of the support legs 12 in the muddy ground. Three-way threaded sleeves 29 are arranged above the inner parts of the support legs 12. A rotating interface is arranged between the upper end of the three-way threaded sleeve 29 and the bottom of the mounting frame 24. The upper end of the three-way threaded sleeve 29 can rotate inside the lower end of the mounting frame 24 and inside the support leg 12 through the arranged rotating interface. Three-way threaded rods 30 are arranged below the inner parts of the support legs 12 at the lower end of the three-way threaded sleeve 29. The three-way threaded rods 30 are threadedly connected to the three-way threaded sleeves 29. When the three-way threaded sleeve 29 rotates, the three-way threaded rod 30 will move at the lower end of the three-way threaded sleeve 29, driving the support leg 12 to expand and contract. A group of four-way motors 31 are arranged inside each mounting frame 24. The mounting frame 24 is used to install the four-way motor 31. Each group of four-way motors 31 is respectively connected to the upper end of a group of three-way threaded sleeves 29. The four-way motor 31 is used to drive the three-way threaded sleeve 29 to rotate.

[0028] As Figures 1 - 6As shown in the figure, telescopic connecting rods 25 are provided at the upper ends of the two groups of rotating rods 22. Rotating heads 26 are provided in the middle of the two groups of telescopic connecting rods 25. A rotating interface is provided between the rotating head 26 and the inner wall of the telescopic connecting rod 25. The rotating head 26 can rotate in the middle of the upper end of the telescopic connecting rod 25 through the provided rotating interface. When the rotating head 26 rotates, the telescopic connecting rod 25 can perform telescopic movement. Above the middle of the inside of the second guiding roller 10, a mounting plate 18 is provided. A third motor 19 is provided at the upper end of the mounting plate 18. The mounting plate 18 is used to mount the third motor 19. A second bevel gear 28 is provided below the lower end of the third motor 19 and below the mounting plate 18. The third motor 19 can drive the second bevel gear 28 to rotate. A second threaded sleeve 20 is provided in the middle of the lower end of the mounting plate 18. A rotating interface is provided between the outer wall of the second threaded sleeve 20 and the mounting plate 18. The second threaded sleeve 20 rotates in the middle of the lower end of the mounting plate 18 through the provided rotating interface. A first bevel gear 27 is provided on the outer wall of the second threaded sleeve 20. The first bevel gear 27 meshes with the second bevel gear 28. The third motor 19 can drive the second threaded sleeve 20 to rotate through the second bevel gear 28 and the first bevel gear 27. Both ends of the second threaded sleeve 20 are provided with second threaded rods 21. The second threaded rods 21 are threadedly connected to the inner wall of the second threaded sleeve 20. The threads on the outer walls of both ends of the second threaded rod 21 are reverse. When the second threaded sleeve 20 rotates, the two second threaded rods 21 on both sides will move synchronously and in opposite directions. The ends of the two groups of second threaded rods 21 are respectively connected to the rear ends of a group of rotating heads 26. When the second threaded rod 21 moves, it will drive the rotating head 26 to rotate in the middle of the telescopic connecting rod 25, thereby driving the rotating rod 22 to rotate.

[0029] As Figures 1 - 6As shown in the figure, a fixing frame 2 is provided at the upper end of the bottom of the cable rack 1. A four-rail cable reel 3 is provided in the middle of the fixing frame 2. The fixing frame 2 is used to install the four-rail cable reel 3. Connecting shafts 4 are provided on both sides of the four-rail cable reel 3. The connecting shafts 4 are fixedly connected to the outer wall of the four-rail cable reel 3. The two groups of connecting shafts 4 pass through the middle of the side wall of the fixing frame 2 and are connected to the inner side wall of the cable rack 1. A rotating hole is provided between one end of the connecting shaft 4 and the side wall of the fixing frame 2. The connecting shaft 4 passes through the rotating hole in the side wall of the fixing frame 2 and is rotatably connected to the fixing frame 2. A rotating interface is provided between the other end of the connecting shaft 4 and the side wall of the cable rack 1. The other end of the connecting shaft 4 is rotatably connected to the side wall of the cable rack 1 through the provided rotating interface. A first motor 5 is provided on the outer wall of one side of the cable rack 1. The first motor 5 is connected to the end of a group of connecting shafts 4. The first motor 5 drives the four-rail cable reel 3 to rotate in the middle of the upper end of the fixing frame 2 through the connecting shaft 4. A meter counter 7 is provided on the outer wall of the other side of the cable rack 1. The meter counter 7 is an electronic meter counter. The meter counter 7 is electrically connected to the other group of connecting shafts 4 and can measure the length of the cable released by the four-rail cable reel 3. Two groups of first guiding rollers 6 are provided in front of the four-rail cable reel 3 on the front side of the upper end of the fixing frame 2. The first guiding rollers 6 can rotate on the front outer wall of the fixing frame 2 and are used to guide the cable. Two groups of telescopic frame plates 9 are provided at the front end of the installation table 8. The telescopic frame plates 9 can be telescopically moved. A movable frame 13 is provided at the front ends of the two groups of telescopic frame plates 9. The movable frame 13 can move back and forth through the telescopic frame plates 9. Rotating disks 14 are provided in the middle of the side walls at both front ends of the movable frame 13. A rotating interface is provided between the rotating disks 14 and the side wall of the movable frame 13. The rotating disks 14 can rotate in the middle of the movable frame 13 through the provided rotating interface. Two groups of second guiding rollers 10 are provided between the side walls of the two groups of rotating disks 14. The second guiding rollers 10 can rotate between the side walls of the rotating disks 14. The second guiding rollers 10 can also rotate between the movable frames 13 through the rotating disks 14. The second guiding rollers 10 are used to further guide the cable. A first threaded rod 15 is provided in the middle of the rear end of the movable frame 13. A first threaded sleeve 16 is provided at the rear end of the first threaded rod 15. A second motor 17 is provided inside the installation table 8 at the rear end of the first threaded sleeve 16. A rotating interface is provided between the first threaded sleeve 16 and the outer wall of the installation table 8. The first threaded sleeve 16 can rotate on the front outer wall of the installation table 8. The second motor 17 can drive the first threaded sleeve 16 to rotate. The first threaded rod 15 is threadedly connected to the first threaded sleeve 16. When the first threaded sleeve 16 rotates, the first threaded rod 15 will move in front of the first threaded sleeve 16, driving the movable frame 13 to move back and forth.

[0030] It should be noted that the present invention is a four-rail cable synchronous winding and unwinding device for detecting the integrity of foundation piles. When in use, the third motor 19 inside the stabilizing platform 11 is started, and drives the second threaded sleeve 20 to rotate through the second bevel gear 28 and the first bevel gear 27. The second threaded rods 21 on both sides of the second threaded sleeve 20 will move synchronously and reversely in the middle on both sides of the second threaded sleeve 20, thereby driving the rotating heads 26 on both sides to rotate in the middle of the upper end of the telescopic connecting rod 25 respectively. The telescopic connecting rod 25 will also perform telescopic activities to adapt to the angle change, so that the rotating rod 22 rotates inside the stabilizing platform 11 through the rotating ring 23, adjusting the angle of the support leg 12 below the rotating rod 22, separating the support legs 12 outward, and making the support of the device more stable. The fourth motor 31 inside the installation frame 24 is started, driving the third threaded sleeve 29 to rotate inside the support leg 12. When the third threaded sleeve 29 rotates, the third threaded rod 30 will move downward inside the third threaded sleeve 29, driving the support leg 12 to perform telescopic activities, adjusting the length of the support leg 12, and making the four support legs 12 support the device more stably. The four cables on the outer wall of the four-rail cable reel 3 respectively pass through the middle of the first guiding roller 6 and the second guiding roller 10. The first motor 5 is started, driving the four-rail cable reel 3 to rotate in the middle of the fixing frame 2 through the connecting shaft 4, and releasing the cable. The second motor 17 inside the installation table 8 is started, driving the first threaded sleeve 16 to rotate at the front end of the installation table 8. The first threaded rod 15 will move at the front end of the first threaded sleeve 16, driving the movable frame 13 to move back and forth through the telescopic frame plate 9, adjusting the positions of the movable frame 13 and the second guiding roller 10, and guiding the cable better. When the cable is used to detect the foundation pile, the meter 7 will measure the length of the cable and transmit the result to the computer. After the detection is completed, the first motor 5 drives the four-rail cable reel 3 to rotate reversely, winding up the cable, and then the detection process of the foundation pile can be completed.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A four-track cable synchronous retracting and releasing device for pile integrity detection, comprising a cable rack (1), characterized in that: A mounting platform (8) is provided at the lower end of the cable rack (1), a stabilizing platform (11) is provided at the lower end of the mounting platform (8), two groups of rotating rods (22) are provided between the front and rear inner walls of the stabilizing platform (11), rotating rings (23) are provided between the two ends of the two groups of rotating rods (22) and the inner walls of the stabilizing platform (11), two groups of mounting frames (24) are provided in the middle of the two groups of rotating rods (22), and the four groups of mounting frames (24) are provided with a plurality of rotating rings (23) disposed between the two ends of the two groups of rotating rods (22) and the inner walls of the stabilizing platform (11). A support leg (12) is arranged at the lower end of each of the four groups of support legs (12), and a ground nail (32) is arranged at the lower end of each of the four groups of support legs (12). A No. 3 threaded sleeve (29) is arranged above the interior of each of the support legs (12), and a No. 3 threaded rod (30) is arranged at the lower end of each of the No. 3 threaded sleeves (29) below the interior of the support legs (12). A group of No. 4 motors (31) is arranged inside each of the installation frames (24), and each group of No. 4 motors (31) is respectively connected to a The second guide roller (10) is connected to the upper end of the third threaded sleeve (29) of the second guide roller (10), the upper ends of the two groups of rotating rods (22) are both provided with telescopic connecting rods (25), the middle of the two groups of telescopic connecting rods (25) are both provided with rotating heads (26), a mounting plate (18) is provided at the upper middle of the second guide roller (10), a third motor (19) is provided at the upper end of the mounting plate (18), and a third motor (19) is provided at the lower end of the third motor (19) below the mounting plate (18). A second bevel gear (28), a second threaded sleeve (20) is arranged in the middle of the lower end of the mounting plate (18), a first bevel gear (27) is arranged on the outer wall of the second threaded sleeve (20), the first bevel gear (27) is meshed with the second bevel gear (28), and second threaded rods (21) are arranged at both ends of the second threaded sleeve (20), and the ends of the two groups of the second threaded rods (21) are respectively connected to the rear end of a group of rotating heads (26).

2. A four-track cable synchronous retracting and releasing device for pile integrity detection according to claim 1, characterized in that: A fixing frame (2) is arranged at the upper end of the bottom of the cable rack (1), a four-track cable drum (3) is arranged in the middle of the fixing frame (2), connecting shafts (4) are arranged on both sides of the four-track cable drum (3), two groups of connecting shafts (4) pass through the middle of the side wall of the fixing frame (2) and are connected to the inner side wall of the cable rack (1), a first motor (5) is arranged on the outer wall of one side of the cable rack (1), the first motor (5) is connected to the end of one group of connecting shafts (4), a meter (7) is arranged on the outer wall of the other side of the cable rack (1), the meter (7) is connected to another group of connecting shafts (4), the upper front side of the fixing frame (2) is on the four-track cable drum (3) ), two groups of No. 1 guide rollers (6) are arranged in front of the mounting platform (8), two groups of telescopic frame plates (9) are arranged at the front end of the two groups of telescopic frame plates (9), a group of movable frames (13) are arranged at the front end of the two groups of the telescopic frame plates (9), rotating disks (14) are arranged in the middle of the side walls on both sides of the front end of the movable frame (13), two groups of No. 2 guide rollers (10) are arranged between the side walls of the two groups of the rotating disks (14), a No. 1 threaded rod (15) is arranged in the middle of the rear end of the movable frame (13), a No. 1 threaded sleeve (16) is arranged at the rear end of the No. 1 threaded rod (15), and a No. 2 motor (17) is arranged at the rear end of the No. 1 threaded sleeve (16) inside the mounting platform (8).

3. A four-track cable synchronous retracting and releasing device for pile integrity detection according to claim 1, characterized in that: A rotating interface is provided between the rotating ring (23) and the inner wall of the stabilizing platform (11); the rotating ring (23) is rotatably connected to the inner wall of the stabilizing platform (11) via the rotating interface; and the rotating rod (22) is rotatably connected to the inner wall of the stabilizing platform (11) via the rotating ring (23).

4. A four-track cable synchronous retracting and releasing device for pile integrity detection according to claim 1, characterized in that: A rotation interface is provided between the outer wall of the No. 2 threaded sleeve (20) and the mounting plate (18), and the No. 2 threaded sleeve (20) is rotationally connected to the mounting plate (18) via the provided rotation interface. The two groups of No. 2 threaded rods (21) are respectively threadedly connected to the inner walls on both sides of the No. 2 threaded sleeve (20), and the threads of the outer walls of the two groups of No. 2 threaded rods (21) are in opposite directions.

5. The four-track cable synchronous retracting and releasing device for pile integrity detection according to claim 1 is characterized in that: A rotating interface is provided between the rotating head (26) and the inner wall of the upper end of the telescopic connecting rod (25); the rotating head (26) is rotatably connected to the inner wall of the upper end of the telescopic connecting rod (25) via the rotating interface; and the telescopic connecting rod (25) is telescopically movable.

6. A four-track cable synchronous retracting and releasing device for pile integrity detection according to claim 1, characterized in that: The support leg (12) is a telescopic hollow square tube. A rotation interface is provided between the upper end of the No. 3 threaded sleeve (29) and the lower end of the mounting frame (24). The upper end of the No. 3 threaded sleeve (29) is rotationally connected to the lower end of the mounting frame (24) through the provided rotation interface. The No. 3 threaded rod (30) is threadedly connected to the inner wall of the No. 3 threaded sleeve (29). The lower end of the No. 3 threaded rod (30) is fixedly connected to the inner wall of the lower end of the support leg (12).

7. A four-track cable synchronous retracting and releasing device for pile integrity detection according to claim 2, characterized in that: A rotation interface is provided between the first guide roller (6) and the second guide roller (10) and the side wall of the fixed frame (2) and the rotating disk (14), respectively; the first guide roller (6) and the second guide roller (10) are rotationally connected to the side wall of the fixed frame (2) and the rotating disk (14) respectively through the provided rotation interface.

8. A four-track cable synchronous retracting and releasing device for pile integrity detection according to claim 2, characterized in that: A rotating interface is provided between the rotating disk (14) and the side wall of the movable frame (13), and the rotating disk (14) is rotatably connected to the side wall of the movable frame (13) through the provided rotating interface. A rotating interface is provided between the rear end of the No. 1 threaded sleeve (16) and the outer wall of the mounting platform (8), and the rear end of the No. 1 threaded sleeve (16) is rotatably connected to the outer wall of the mounting platform (8) through the provided rotating interface. The No. 1 threaded rod (15) is threadedly connected to the No. 1 threaded sleeve (16).

9. A four-track cable synchronous retracting and releasing device for pile integrity detection according to claim 2, characterized in that: The four-track cable reel (3) is fixedly connected to the connecting shaft (4); a rotating hole is provided between one end of the connecting shaft (4) and the side wall of the fixing frame (2); one end of the connecting shaft (4) is rotatably connected to the side wall of the fixing frame (2) through the provided rotating hole; a rotating interface is provided between the other end of the connecting shaft (4) and the side wall of the cable rack (1); the other end of the connecting shaft (4) is rotatably connected to the cable rack (1) through the provided rotating interface; the meter (7) is an electronic meter; the meter (7) is electrically connected to the connecting shaft (4); a signal transmitter is provided inside the meter (7).

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