A device for detecting the thickness of a construction sediment of a foundation engineering

Abstract

The application relates to the technical field of foundation engineering construction, and discloses a device for detecting the thickness of deposited sediment in foundation engineering construction, which comprises a deposited sediment thickness detector installed on a foundation. The device is characterized in that the rolling assembly, the steel wire rope, the rotating disc and the turnover frame are cooperatively operated, the detection of different positions in a pile hole can be completed without repeated disassembly, and the detection efficiency is greatly improved; the positioning plate increases the contact area, the extrusion arm firmly clamps the side wall of the pile hole, stable support is provided for the probe puncture, the detection data is ensured to be accurate and reliable; the output end for adjusting the probe position acts on the steel wire rope, damage caused by the probe being stuck is avoided, and the service life of the device is effectively prolonged; meanwhile, the turnover frame, the rotating disc and other structures are matched, the flexible movement and multi-angle detection of the probe in the pile hole are realized, the detection range is significantly expanded, and more comprehensive and accurate data support is provided for the quality evaluation of foundation engineering construction.

Description

Technical Field

[0001] This invention belongs to the field of foundation engineering construction technology, and specifically relates to a device for detecting the thickness of sediment during foundation engineering construction. Background Technology

[0002] In the field of foundation engineering construction, accurate detection of sediment thickness plays a crucial role in ensuring project quality. With the development of the construction industry, the requirements for foundation construction are constantly increasing, making accurate sediment thickness detection an important step in ensuring the bearing capacity of pile foundations and the stability of the project.

[0003] In existing technologies, conventional testing equipment typically obtains sediment thickness data by moving a probe downwards during testing. However, when the sediment layer is hard, the probe experiences a significant reaction force during penetration. This force pushes the probe upwards, causing displacement deviation and resulting in inaccurate data, ultimately leading to test failure. Furthermore, the output end used to drive the probe's movement within the pile hole mostly acts directly on the probe housing. If the probe accidentally gets stuck in a hard sediment layer, continued force applied to the output end can easily deform the probe, damaging the equipment, potentially delaying project progress, and increasing construction costs.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To address the technical problem that when the sediment layer has high hardness, the probe experiences a large reaction force during penetration, which pushes the probe upwards, causing displacement and leading to inaccurate data and ultimately detection failure; furthermore, the output end used to drive the probe's movement in the pile hole mostly acts directly on the probe shell. If the probe accidentally gets stuck in a high-hardness sediment layer, continued force on the output end can easily cause deformation, damaging the equipment, delaying the project, and increasing construction costs. The basic concept of the technical solution adopted in this invention is: A device for detecting the thickness of sediment during foundation engineering construction includes a sediment thickness detector installed on the foundation.

[0006] The sediment thickness detector is equipped with a winding assembly, and a steel wire rope is wound around the winding assembly. A probe is installed at the bottom of the steel wire rope, and the bottom of the probe is placed in the sediment layer of the pile hole. A probe is installed inside the probe, and a pressure sensor is installed at the bottom of the probe. The probe's outer shell is slidably equipped with a turntable for adjusting its angle, and a positioning plate for improving support stability is rotatably installed on the side wall of the turntable. A compression arm that guides the probe to the center position is rotatably installed on the positioning plate, and a swing arm is installed at the rotation center of the compression arm. An electric push rod is installed on the positioning plate, and the output end of the electric push rod pushes the swing arm to rotate, so that the compression arm is engaged with the side wall of the pile hole. A rotating frame for adjusting the probe's detection position is rotatably mounted on the turntable, and the rotating frame is slidably connected to a steel wire rope.

[0007] In a preferred embodiment of the present invention, the outer shell of the sediment thickness detector is symmetrically equipped with side plates, and a number of pairs of vertical retaining rods are installed around the side plates. A counterweight for adjusting the center of gravity is installed inside the side plates, and the counterweight is located at the center of the retaining rods.

[0008] In a preferred embodiment of the present invention, a connecting frame is installed at the bottom of the wire rope, the connecting frame is installed on the probe housing, an mounting frame is installed on the housing of the sediment thickness detector, and an adjusting roller is installed on the mounting frame. The diameter of the center position of the adjusting roller is lower than the diameter of the two sides, and the wire rope is attached to the center position of the adjusting roller.

[0009] In a preferred embodiment of the present invention, the positioning plate has a circular through hole, and a turntable is rotatably installed in the circular through hole. A guide rail is installed on the side wall of the turntable, and a sliding groove is opened on the side wall of the circular through hole. The guide rail is slidably installed in the sliding groove. A pressure plate is installed at the bottom of the positioning plate and the pressure plate is attached to the surface of the sediment layer.

[0010] In a preferred embodiment of the present invention, an insert plate is installed at the end of the extrusion arm. The insert plate and the extrusion arm form an L-shape. One end face of the insert plate is blade-shaped and is used to insert into the side wall of the pile hole to improve the support effect. The other end of the insert plate is rounded and is used to extrude the side wall of the probe so that it slides to the center position of the turntable.

[0011] In a preferred embodiment of the present invention, a mounting base is installed on the turntable, and a retaining shaft is rotatably installed inside the mounting base. The retaining shaft is connected to the rotation center of the extrusion arm. A torsion spring is sleeved on the retaining shaft, with one end of the torsion spring engaged with the side wall of the mounting base and the other end engaged with the extrusion arm.

[0012] In a preferred embodiment of the present invention, a strip groove is provided on the swing arm, a slide rod is slidably arranged on the strip groove, an arched frame is installed on the slide rod, a top block is installed at the bottom of the arched frame, the output end of the top block is connected to the output end of the electric push rod, and the swing arm is in an inclined state.

[0013] In a preferred embodiment of the present invention, a collar is installed on the top of the flipping frame. The collar has a through hole inside and an arc-shaped surface on the inner side wall of the collar for guiding and reducing friction. The wire rope is movably inserted into the inner wall of the collar.

[0014] In a preferred embodiment of the present invention, a pair of positioning seats are installed on the turntable, and a positioning shaft is rotatably installed on each positioning seat. The positioning shaft is rotatably connected to the flipping frame. A drive motor is installed on the turntable, and the output end of the drive motor is connected to the positioning shaft. A waterproof cover is installed on the turntable, and the waterproof cover is placed outside the drive motor.

[0015] In a preferred embodiment of the present invention, a guide groove is provided on the inner side wall of the turntable, a pair of guide rods are installed on the guide groove, a guide block is slidably disposed on the guide rod, and the guide block is connected to the probe housing.

[0016] Compared with the prior art, the present invention has the following advantages: This invention utilizes the coordinated operation of a winding assembly, wire rope, turntable, and tilting frame to complete the detection of different positions within the pile hole without repeated disassembly, significantly improving detection efficiency. The positioning plate increases the contact area, and the clamping arm firmly engages with the pile hole sidewall, providing stable support for probe penetration and ensuring accurate and reliable detection data. The output end for adjusting the probe position acts on the wire rope, preventing damage caused by probe jamming and effectively extending the device's lifespan. Simultaneously, the tilting frame, turntable, and other structures work together to enable flexible probe movement and multi-angle detection within the pile hole, significantly expanding the detection range and providing more comprehensive and accurate data support for the quality assessment of foundation engineering construction.

[0017] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0018] In the attached diagram: Figure 1 This is an installation structure diagram of a device for detecting the thickness of sediment during foundation engineering construction. Figure 2 An overall diagram of a device for detecting the thickness of sediment during foundation engineering construction; Figure 3 This is a partially enlarged view of a device for detecting the thickness of sediment during foundation engineering construction. Figure 4 A cross-sectional view of the tilting frame of a device for detecting the thickness of sediment during foundation engineering construction; Figure 5 A device for detecting the thickness of sediment during foundation engineering construction. Figure 3 Enlarged view of point A in the middle; Figure 6An initial state diagram of the extrusion arm of a device for detecting the thickness of sediment during foundation engineering construction; Figure 7 This is a flowchart of a detection device for measuring the thickness of sediment during foundation engineering construction.

[0019] In the picture: 1. Sediment thickness detector; 11. Winding assembly; 12. Wire rope; 121. Adjusting roller; 122. Mounting frame; 13. Probe; 131. Connecting frame; 132. Probe; 133. Pressure sensor; 14. Side plate; 141. Enclosure rod; 142. Counterweight; 2. Positioning plate; 21. Pressure plate; 211. Circular through hole; 212. Turntable; 213. Guide rail; 214. Slide groove; 22. Extrusion arm; 221. Insert plate; 222. Mounting base; 223. Locking shaft; 23. Swing arm; 231. Strip groove; 232. Slide rod; 233. Arch frame; 234. Top block; 235. Electric push rod; 3. Tilting frame; 31. Collar; 311. Arc-shaped surface; 32. Positioning seat; 321. Positioning shaft; 322. Guide groove; 323. Guide rod; 324. Guide block; 33. Drive motor; 331. Waterproof cover; 4. Foundation; 41. Sediment layer; 42. Pile hole. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention. Example

[0021] like Figures 1 to 7 As shown, a device for detecting the thickness of sediment during foundation engineering construction includes a sediment thickness detector 1 installed on the foundation 4.

[0022] The sediment thickness detector 1 is equipped with a winding assembly 11, on which a steel wire rope 12 is wound. A probe 13 is installed at the bottom of the steel wire rope 12, and the bottom of the probe 13 is placed in the sediment layer 41 of the pile hole 42. A probe 132 is installed inside the probe 13, and a pressure sensor 133 is installed at the bottom of the probe 132. The combination of the winding assembly 11 and the steel wire rope 12 enables flexible control of the raising and lowering of the probe 13, making it easy to accurately adjust the probe 13 to the detection position of the sediment layer 41. The probe 132, together with the pressure sensor 133, can automate and digitize the sediment thickness detection process, reduce manual operation, and significantly improve detection efficiency and accuracy of detection results.

[0023] The outer shell of probe 13 is slidably equipped with a turntable 212 for adjusting its angle, and a positioning plate 2 for improving support stability is rotatably installed on the side wall of the turntable 212. A squeezing arm 22, which guides probe 13 to the center position, is rotatably installed on the positioning plate 2, and a swing arm 23 is installed at the rotation center of the squeezing arm 22. An electric push rod 235 is installed on the positioning plate 2, and the output end of the electric push rod 235 pushes the swing arm 23 to rotate, so that the squeezing arm 22 is engaged with the side wall of the pile hole 42. The turntable 212 and the positioning plate 2 cooperate with each other to flexibly adjust the angle of probe 13 according to the shape characteristics of different pile holes 42. The linkage design of electric push rod 235, swing arm 23 and squeezing arm 22 can make squeezing arm 22 firmly engaged with the side wall of pile hole 42, providing stable support for the detection process, effectively preventing probe 13 from shifting during detection, and ensuring the authenticity and reliability of detection data.

[0024] A rotating frame 3 for adjusting the detection position of the probe 13 is rotatably mounted on the turntable 212. The rotating frame 3 is slidably connected to the wire rope 12. The sliding connection between the rotating frame 3 and the wire rope 12 allows the detection position of the probe 13 to be easily changed by rotating the rotating frame 3, without the need for repeated disassembly and reassembly of the device, which greatly improves the detection efficiency and expands the detection range, enabling it to cover more areas within the pile hole 42.

[0025] like Figures 1 to 7 As shown in the specific embodiment, side plates 14 are symmetrically installed on the outer shell of the sediment thickness detector 1. Several pairs of vertically aligned support rods 141 are installed around the side plates 14. A counterweight 142 for adjusting the center of gravity is installed inside the side plates 14, and the counterweight 142 is located at the center of the support rods 141. The symmetrically arranged side plates 14, support rods 141, and counterweight 142 work together to effectively adjust the center of gravity of the sediment thickness detector 1, enhance the overall stability of the device, and prevent the device from shaking due to the shift of the center of gravity even in complex foundation environments, further improving the reliability of the detection process.

[0026] like Figures 1 to 7 As shown, a connecting frame 131 is further installed at the bottom of the wire rope 12. The connecting frame 131 is mounted on the outer shell of the probe 13. A mounting frame 122 is installed on the outer shell of the sediment thickness detector 1. An adjusting roller 121 is installed on the mounting frame 122. The diameter of the center position of the adjusting roller 121 is lower than the diameter of the two sides, and the wire rope 12 is close to the center position of the adjusting roller 121. The connecting frame 131 ensures a stable connection between the wire rope 12 and the probe 13, preventing the probe 13 from falling off during the lifting and lowering process. The unique diameter design of the adjusting roller 121 can guide the wire rope 12 to be smoothly raised and lowered, which not only reduces the wear of the wire rope 12 and extends the service life of the device, but also ensures that the lifting and lowering process of the probe 13 is smooth and orderly. Example

[0027] The difference between the above embodiments and this embodiment is that: Figures 1 to 7 As shown, the positioning plate 2 has a circular through hole 211, and the turntable 212 is rotatably installed in the circular through hole 211. A guide rail 213 is installed on the side wall of the turntable 212, and a sliding groove 214 is opened on the side wall of the circular through hole 211. The guide rail 213 is slidably installed in the sliding groove 214. A pressure plate 21 is installed at the bottom of the positioning plate 2, and the pressure plate 21 is attached to the surface of the sediment layer 41. The ingenious cooperation of the circular through hole 211, the guide rail 213 and the sliding groove 214 allows the turntable 212 to rotate flexibly and be positioned accurately, facilitating quick adjustment of the detection angle of the probe 13. The pressure plate 21 increases the contact area with the sediment layer 41, providing stable support for the detection device even on the uneven surface of the sediment layer, effectively reducing device shaking, thereby improving detection accuracy.

[0028] like Figures 1 to 7 As shown, in a specific embodiment, an insert plate 221 is installed at the end of the extrusion arm 22. The insert plate 221 and the extrusion arm 22 form an L-shape. One end face of the insert plate 221 is blade-shaped and is used to insert into the side wall of the pile hole 42 to improve the support effect. The other end of the insert plate 221 is rounded and is used to extrude the side wall of the probe 13 so that it slides to the center position of the turntable 212. An mounting base 222 is installed on the turntable 212. A retaining shaft 223 is rotatably installed inside the mounting base 222. The retaining shaft 223 is connected to the rotation center of the extrusion arm 22. A torsion spring is sleeved on the retaining shaft 223, and one end of the torsion spring is engaged with the side wall of the mounting base 222, and the other end is engaged with the extrusion arm 22.

[0029] like Figures 1 to 7 As shown, further, a strip groove 231 is provided on the swing arm 23, and a slide rod 232 is slidably arranged on the strip groove 231. An arched frame 233 is installed on the slide rod 232, and a top block 234 is installed at the bottom of the arched frame 233. The output end of the top block 234 is connected to the output end of the electric push rod 235, and the swing arm 23 is in an inclined state. The transmission structure composed of the strip groove 231, the slide rod 232, the arched frame 233, and the top block 234 cleverly transforms the linear motion of the electric push rod 235 into the rotational motion of the swing arm 23, thereby realizing the flipping and locking action of the extrusion arm 22. This structure design is simple and reliable, and it is easy to accurately control the locking force and angle of the extrusion arm 22, thus improving the operability of the device. Example

[0030] The difference between the above embodiments and this embodiment is that: Figures 1 to 7As shown, a collar 31 is installed on the top of the flipping frame 3. The collar 31 has a through hole inside, and the inner sidewall of the collar 31 has an arc-shaped surface 311 for guidance and to reduce friction. The wire rope 12 is movably inserted into the inner wall of the collar 31. The arc-shaped surface 311 of the inner sidewall of the collar 31 can provide good guidance for the wire rope 12, while effectively reducing the friction between the two, so that the wire rope 12 slides smoothly in the collar 31, ensuring that the angle of the flipping frame 3 and the wire rope 12 changes synchronously, and ensuring the accuracy and stability of the probe 13 position adjustment.

[0031] like Figures 1 to 7 As shown, in a specific embodiment, a pair of positioning seats 32 are mounted on the turntable 212, and a positioning shaft 321 is rotatably mounted on each positioning seat 32. The positioning shaft 321 is rotatably connected to the tilting frame 3. A drive motor 33 is mounted on the turntable 212, and the output end of the drive motor 33 is connected to the positioning shaft 321. A waterproof cover 331 is mounted on the turntable 212 and is located outside the drive motor 33. The positioning seats 32 and the positioning shaft 321 provide stable rotational support for the tilting frame 3, while the drive motor 33 provides power for the rotation of the tilting frame 3, realizing the automatic adjustment of the detection position of the probe 13. The waterproof cover 331 can effectively protect the drive motor 33, prevent it from being damaged in a humid detection environment, extend the service life of the motor, and ensure the long-term stable operation of the device.

[0032] like Figures 1 to 7 As shown, the inner wall of the turntable 212 is further provided with a guide groove 322, on which a pair of guide rods 323 are installed. A guide block 324 is slidably disposed on the guide rods 323, and the guide block 324 is connected to the outer shell of the probe 13. The combination of the guide groove 322, the guide rods 323 and the guide block 324 provides precise guidance when the wire rope 12 pulls the probe 13 to move, enabling the probe 13 to slide smoothly in the pile hole 42 along a predetermined direction. In conjunction with the rotation of the turntable 212, it achieves comprehensive detection of different positions in the pile hole 42 without the need for repeated disassembly and assembly of the device, greatly improving detection efficiency and coverage.

[0033] The implementation principle of the device for detecting the thickness of sediment in foundation engineering construction according to the present invention is as follows: In the initial installation phase, the sediment thickness detector 1 is securely installed on the foundation 4. The winding assembly 11 on the sediment thickness detector 1 is used to orderly wind the steel wire rope 12. The raising and lowering of the bottom probe 13 can be flexibly controlled by the winding assembly 11 and the operation of winding the steel wire rope 12. The probe 13 is connected to the steel wire rope 12 via a connecting frame 131, ensuring the stability of the probe 13 during raising and lowering. During the descent of the probe 13, the turntable 212 slidingly mounted on its outer shell and the positioning plate 2 rotatably mounted on the side wall of the turntable 212 play crucial roles. The pressure plate 21 at the bottom of the positioning plate 2 gradually approaches and eventually tightly adheres to the surface of the sediment layer 41. The advantage of this design is that the pressure plate 21 can increase the contact area with the sediment layer, thereby providing a more stable support foundation for the entire detection device and effectively avoiding detection deviations caused by uneven sediment layer surfaces.

[0034] After initial positioning is completed, the electric push rod 235 is activated. The output end of the electric push rod 235 is connected to the top block 234 on the swing arm 23. The top block 234 drives the arch frame 233 and the slide rod 232 to move, so that the slide rod 232 slides in the strip groove 231 of the swing arm 23, pushing the tilted swing arm 23 to rotate.

[0035] When the swing arm 23 rotates, the compression arm 22 flips accordingly. The insert plate 221 at its end forms an L-shaped structure with the compression arm 22. One end face of the insert plate 221 is blade-shaped, which can easily insert into the side wall of the pile hole 42 (originally, the compression arm 22 was attached to the side wall of the probe 13 to ensure that the probe 13 was in the center position), thereby firmly locking the compression arm 22 into the side wall of the pile hole 42. The advantage of this series of structural designs is that the tight engagement between the compression arm 22 and the side wall of the pile hole provides solid support for the subsequent puncture detection of the probe 132, effectively preventing the probe 13 from being lifted and displaced during the puncture of the probe 132, greatly improving the stability and reliability of the detection process, and ensuring the accuracy of the detection data.

[0036] After the fixing operation is completed, the probe 132 inside the probe 13 begins to perform the downward detection task (existing technology will not be described in detail here). The pressure sensor 133 installed at the bottom of the probe 132 plays a key role. When the probe 132 penetrates the sediment layer 41, the pressure sensor 133 can sensitively detect the sudden increase in pressure due to the pressure between the probe 132 and the hard bottom of the pile hole 42. It accurately transmits the signal to the sediment thickness detector 1 for analysis and processing, thereby quickly and accurately determining the sediment thickness at that point and completing a single detection. The application of the pressure sensor 133 realizes the automation and datafication of the detection process, reduces the interference of human factors, and improves the objectivity and reliability of the detection results. The signal transmission and working principle of the pressure sensor 133 and the sediment thickness detector 1 are existing technologies and will not be described in detail here.

[0037] After a single test, the probe 132 is first retracted, and then the wire rope 12 is loosened by the winding assembly 11 (but the compression arm 22 is still locked, so the vertical position of the probe 13 remains unchanged). At this time, the drive motor 33 is started, and the drive motor 33 drives the flipping frame 3 to rotate. The collar 31 at the top of the flipping frame 3 has a through hole inside, and the inner side wall has an arc-shaped surface 311. The wire rope 12 is movably inserted into the inner wall of the collar 31. The arc-shaped surface 311 plays a good guiding role and effectively reduces friction, so that the wire rope 12 can slide smoothly in the collar 31, realizing the synchronous change of the angle between the flipping frame 3 and the wire rope 12.

[0038] Finally, the wire rope 12 is tightened again by the winding assembly 11. Since a guide rod 323 is installed in the guide groove 322 on the inner wall of the turntable 212, and a guide block 324 connected to the probe 13 housing is slidably mounted on the guide rod 323, the wire rope 12 pulls the probe 13 to slide along the guide groove 322 during the tightening process. Consequently, the overall position of the probe 13 in the pile hole 42 changes, allowing for thickness detection at different locations.

[0039] Meanwhile, the turntable 212 itself can rotate, and its side rail 213 is slidably set in the groove 214 on the side wall of the circular through hole 211 of the positioning plate 2, allowing the turntable 212 to rotate freely. By coordinating the sliding of the probe 13 with the rotation of the turntable 212 via the steel wire rope 12, the thickness of sediment at different locations within the pile hole 42 can be detected without repeated disassembly and reassembly of the detection device, effectively improving detection efficiency and coverage. This comprehensive, multi-angle detection method can obtain more complete information on the thickness of sediment within the pile hole, providing sufficient and reliable data support for the quality assessment of foundation engineering construction.

Claims

1. A device for detecting the thickness of sediment during foundation engineering construction, comprising a sediment thickness detector (1) installed on the foundation (4), characterized in that: The sediment thickness detector (1) is equipped with a winding assembly (11), and a steel wire rope (12) is wound on the winding assembly (11). A probe (13) is installed at the bottom of the steel wire rope (12), and the bottom of the probe (13) is placed in the sediment layer (41) of the pile hole (42). A probe (132) is installed inside the probe (13), and a pressure sensor (133) is installed at the bottom of the probe (132). The outer shell of the probe (13) is slidably provided with a turntable (212) for adjusting its angle, and a positioning plate (2) for improving support stability is rotatably installed on the side wall of the turntable (212). A squeezing arm (22) for ensuring that the probe (13) is in the center position is rotatably installed on the positioning plate (2), and a swing arm (23) is installed at the rotation center of the squeezing arm (22). An electric push rod (235) is installed on the positioning plate (2), and the output end of the electric push rod (235) pushes the swing arm (23) to rotate, so that the squeezing arm (22) is engaged with the side wall of the pile hole (42). The turntable (212) is rotatably mounted with a flipping frame (3) for adjusting the detection position of the probe (13), and the flipping frame (3) is slidably connected to the wire rope (12); The inner wall of the turntable (212) is provided with a guide groove (322), a pair of guide rods (323) are installed on the guide groove (322), and a guide block (324) is slidably arranged on the guide rod (323). The guide block (324) is connected to the outer shell of the probe (13).

2. The device for detecting the thickness of sediment during foundation engineering construction according to claim 1, characterized in that, The sediment thickness detector (1) has side plates (14) symmetrically installed on its outer shell. Several pairs of vertical rods (141) are installed around the side plates (14). A counterweight (142) for adjusting the center of gravity is installed inside the side plates (14), and the counterweight (142) is located at the center of the rods (141).

3. The device for detecting the thickness of sediment during foundation engineering construction according to claim 1, characterized in that, A connecting frame (131) is installed at the bottom of the wire rope (12). The connecting frame (131) is installed on the outer shell of the probe (13). An mounting frame (122) is installed on the outer shell of the sediment thickness detector (1). An adjusting roller (121) is installed on the mounting frame (122). The diameter of the center position of the adjusting roller (121) is lower than the diameter of the two sides, and the wire rope (12) is attached to the center position of the adjusting roller (121).

4. The device for detecting the thickness of sediment during foundation engineering construction according to claim 1, characterized in that, The positioning plate (2) has a circular through hole (211) and a turntable (212) is rotatably installed in the circular through hole (211). A guide rail (213) is installed on the side wall of the turntable (212). A sliding groove (214) is opened on the side wall of the circular through hole (211) and the guide rail (213) is slidably installed in the sliding groove (214). A pressure plate (21) is installed at the bottom of the positioning plate (2) and the pressure plate (21) is attached to the surface of the sediment layer (41).

5. The device for detecting the thickness of sediment during foundation engineering construction according to claim 1, characterized in that, The end of the extrusion arm (22) is equipped with a plate (221). The plate (221) and the extrusion arm (22) form an L-shape. One end face of the plate (221) is blade-shaped and is used to insert into the side wall of the pile hole (42) to improve the support effect. The other end of the plate (221) is rounded and is used to extrude the side wall of the probe (13) so that it slides to the center position of the turntable (212).

6. The device for detecting the thickness of sediment during foundation engineering construction according to claim 1, characterized in that, The turntable (212) is equipped with a mounting base (222), and a retaining shaft (223) is rotatably mounted inside the mounting base (222). The retaining shaft (223) is connected to the rotation center of the extrusion arm (22). A torsion spring is sleeved on the retaining shaft (223), and one end of the torsion spring is engaged with the side wall of the mounting base (222), and the other end is engaged with the extrusion arm (22).

7. The device for detecting the thickness of sediment during foundation engineering construction according to claim 1, characterized in that, The swing arm (23) has a strip groove (231) and a slide rod (232) is slidably arranged on the strip groove (231). An arched frame (233) is installed on the slide rod (232). A top block (234) is installed at the bottom of the arched frame (233). The output end of the top block (234) is connected to the output end of the electric push rod (235), and the swing arm (23) is in an inclined state.

8. The device for detecting the thickness of sediment during foundation engineering construction according to claim 1, characterized in that, The top of the flipping frame (3) is equipped with a collar (31), the collar (31) has a through hole inside, and the inner side wall of the collar (31) is provided with an arc-shaped surface (311) for guiding and reducing friction. The wire rope (12) is movably inserted into the inner wall of the collar (31).

9. The device for detecting the thickness of sediment during foundation engineering construction according to claim 1, characterized in that, A pair of positioning seats (32) are installed on the turntable (212), and a positioning shaft (321) is rotatably installed on each positioning seat (32). The positioning shaft (321) is rotatably connected to the flipping frame (3). A drive motor (33) is installed on the turntable (212), and the output end of the drive motor (33) is connected to the positioning shaft (321). A waterproof cover (331) is installed on the turntable (212), and the waterproof cover (331) is placed outside the drive motor (33).

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