Device and method for detecting thickness of sediment at bottom of rotary excavating pile for engineering construction

Abstract

The invention discloses a rotary excavating pile bottom sediment thickness detection device and method for engineering construction, and relates to the field of rotary excavating pile bottom sediment detection.The rotary excavating pile bottom sediment thickness detection device comprises a sliding box, the bottom of the sliding box is fixedly connected with a first electric telescopic rod, and the bottom end of the first electric telescopic rod is fixedly connected with a mounting box; according to the rotary excavating pile bottom sediment thickness detection device and method for engineering construction, the flatness of sediment at the bottom of a pile pit is self-detected through the leveling self-detection mechanism, when an uneven position is found, accurate positioning can be achieved, a leveling ring can be driven to move in a reciprocating mode to level the sediment, a rubber liquid bag is extruded to enable water to drive an impeller, and a cutting ring and a blade are driven to rotate through transmission; hard sediments are crushed, then the raised sediments are stirred and flattened in a reciprocating manner, so that the sediments at the bottom of the pile pit are uniformly flattened, the position is self-inspected through the flattening self-inspection mechanism after the sediments are flattened for a period of time, and after the position is flattened, the mounting pipe is driven to flatten the next position, and the sediments at the bottom of the pile pit can be fully flattened through the sequential reciprocating manner.

Description

Technical Field

[0001] The invention relates to a rotary pile bottom sediment detection technology, and in particular to a rotary pile bottom sediment thickness detection device and method for engineering construction. Background Art

[0002] Bored piles are a common type of pile foundation in construction projects. The quality of the drilling is directly related to the quality of the pile foundation formed after concrete is poured. If the sediment at the bottom of the borehole is too thick, the pile length will be reduced. This is especially true for pile foundations that primarily bear the load at the bottom end. Their bearing capacity will be directly affected, potentially leading to uneven settlement between piles and potentially posing a safety hazard to the upper building structure. When testing using methods such as the hanging hammer method and the stylus-and-pancake method commonly used in existing technologies, the measured data often has large errors and relies heavily on experience. The error range of sediment thickness detection should be within 5 cm. At the same time, during the detection process, the accumulation of some sediment will cause some sediment to bulge, resulting in uneven sediment distribution at the pile bottom and affecting the accuracy of sediment thickness detection.

[0003] Chinese patent application number 202411731809.1 discloses a device and method for detecting the thickness of the sediment at the bottom of a rotary bored pile in soft soil. Although the patent smoothes the sediment at the bottom of the pile, there are still some deficiencies in the implementation process. During the smoothing process, when the raised sediment is smoothed to the middle, some sediment does not completely fill the depression in the middle. At this time, the fan-shaped plate is already flat, and it is mistakenly believed that the sediment surface is flat, resulting in the sediment at the bottom of the pile pit not being fully smoothed, resulting in inaccurate detection data. At the same time, when the device encounters agglomerated hard sediment during the leveling process, it is unable to break up the agglomerated hard sediment, resulting in poor smoothing effect. At the same time, the patent can only detect the thickness of the sediment at one point. When the detection position encounters hard stones in the sediment, the detected thickness will be too small, resulting in low detection accuracy after the sediment. Summary of the Invention

[0004] The purpose of the present invention is to provide a device and method for detecting the thickness of sediment at the bottom of a rotary drilling pile for engineering construction, so as to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a device for detecting sediment thickness at the bottom of a rotary drilling pile for engineering construction, comprising: Sliding box, the bottom of the sliding box is fixedly connected with a first electric telescopic rod, the bottom end of the first electric telescopic rod is fixedly connected with an installation box, a transmission ring is rotatably connected to the installation box, a transmission mechanism is arranged in the installation box, and the transmission mechanism is used to drive the transmission ring to rotate. Two installation iron blocks are rotatably connected to the outer surface of the transmission ring, and two L-shaped support plates are fixedly connected to the outer surface of the transmission ring. A fixed electromagnet block is fixedly connected to the top of one of the L-shaped support plates; One side of one of the installation iron blocks is fixedly connected with an installation pipe through bolts, and a leveling detection mechanism is arranged on the installation pipe. The leveling detection mechanism is used to level the sediment at the bottom of the pile and detect the thickness of the leveled sediment; One side of the other installation iron block is fixedly connected with a self-checking mechanism for leveling through bolts. The self-checking mechanism for leveling is used to self-check the sediment after leveling the bottom of the pile; A limit fixing mechanism is arranged on the sliding box, and the limit fixing mechanism is used to limit and fix the sliding box.

[0006] Further, the leveling detection mechanism includes a first driving motor fixedly connected inside the installation pipe. The output end of the first driving motor is fixedly connected with a threaded rod rotatably connected to the installation pipe through a coupling. A transmission block is in threaded cooperation with the outer surface of the threaded rod. A guide rod fixedly connected to the installation pipe is slidably connected to the transmission block. An electromagnetic iron plate is fixedly connected to the outer surface of the transmission block. A leveling ring is slidably connected to the outer surface of the installation pipe. A functional cavity is opened on the leveling ring. A permanent magnet block is fixedly connected inside the functional cavity. A cutting ring is rotatably connected to the outer surface of the leveling ring. A plurality of blades are fixedly connected to the cutting ring. A rake claw is fixedly connected to one side of the leveling ring; A driving mechanism connected to the installation pipe is arranged inside the functional cavity. The driving mechanism is used to drive the cutting ring to rotate. A thickness detection mechanism is connected to one side of the leveling ring. The thickness detection mechanism is used to detect the depth of the sediment. The thickness detection mechanism is connected to the self-checking mechanism for leveling on the installation iron block.

[0007] Further, the driving mechanism includes two rubber liquid bags fixedly connected inside the installation pipe. One side of the rubber liquid bag is fixedly connected with a transmission hose fixedly connected to the leveling ring. An electromagnetic valve is fixedly connected to the transmission hose. One end of the transmission hose is fixedly connected with a driving box fixedly connected to the functional cavity. A driving shaft is rotatably connected inside the driving box. An impeller is fixedly connected to the outer surface of the driving shaft. A one-way driving gear is fixedly sleeved on the outer surface of the driving shaft. A driving gear ring fixedly connected to the cutting ring is meshed with the outer surface of the one-way driving gear. Extrusion blocks are fixedly connected to both sides of the transmission block.

[0008] Further, the thickness detection mechanism includes a mounting plate fixedly connected to the leveling ring. A second electric telescopic rod is fixedly connected to the mounting plate. The top of the second electric telescopic rod is fixedly connected to a first connecting plate. A tension sensor is fixedly connected to the top of the first connecting plate. The top of the tension sensor is fixedly connected to a second connecting plate. A measuring column fixedly connected to the mounting plate is fixedly connected to the bottom of the second connecting plate. The second electric telescopic rod is connected to the leveling self-checking mechanism on the mounting iron block.

[0009] Further, the leveling self-checking mechanism includes a leveling box fixedly connected to the mounting iron block. A plurality of transmission columns are slidably connected to the leveling box. A retaining ring is fixedly connected to the outer surface of the transmission column. The bottom end of the transmission column is rotatably connected to a first roller through a connecting frame. Two through holes are formed in the transmission column. An infrared induction switch is fixedly connected to the leveling box. A third electric telescopic rod is fixedly connected to the leveling box. A leveling plate slidably connected to the leveling box is fixedly connected to the bottom end of the third electric telescopic rod.

[0010] Further, the limit fixing mechanism includes a plurality of fixing columns slidably connected to the sliding box. One end of the fixing column is fixedly connected to a fixing frame. A telescopic rod is fixedly connected to the fixing frame. A limit wheel is fixedly connected to one end of the telescopic rod through a connecting frame. A spring is fixedly sleeved on the outer surface of the telescopic rod. A contact rod is slidably connected to the mounting box. A stop block is fixedly connected to the outer surface of the contact rod. A contact switch is fixedly connected to the bottom end of the contact rod. The outer surface of the fixing column is drivingly connected to a transmission adjustment mechanism connected to the sliding box. The transmission adjustment mechanism is used to drive the fixing column to move.

[0011] Further, the transmission adjustment mechanism includes an adjustment motor fixedly connected to the sliding box. The output end of the adjustment motor is fixedly connected to a first transmission shaft through a coupling. A first gear is fixedly sleeved on the outer surface of the first transmission shaft. The outer surface of the first gear is meshed with an adjustment gear ring rotatably connected to the sliding box. The inner surface of the adjustment gear ring is meshed with a plurality of second gears. The outer surface of the second gear is meshed with a transmission rack fixedly connected to the fixing column.

[0012] Further, the transmission mechanism includes a second transmission motor fixedly connected to the mounting box. The output end of the second transmission motor is fixedly connected to a second transmission shaft through a coupling. A transmission gear is fixedly sleeved on the outer surface of the second transmission shaft. The outer surface of the transmission gear is meshed with a transmission gear ring fixedly connected to the transmission ring.

[0013] Further, a driving wheel rotatably connected to the mounting pipe is rotatably connected inside the leveling ring. Mud guard plates are fixedly connected to both sides of the leveling ring.

[0014] A detection method for the thickness of sediment at the bottom of a bored pile used in engineering construction, comprising the following steps: Step 1: Slowly lower the sliding box into the pile pit to the position where detection is to be carried out, and then fix the sliding box. Step 2: The first electric telescopic rod at the bottom of the sliding box drives the installation box to move downward. At the same time, the transmission ring on the installation box rotates, driving the leveling self-check mechanism and the installation pipe to rotate. The leveling self-check mechanism self-checks the flatness of the sediment at the bottom of the pile pit. When unevenness is detected, the leveling detection mechanism on the installation pipe levels the uneven position, and at the same time cooperates with the leveling self-check mechanism until the sediment at the bottom of the pile pit is completely leveled. Step 3: Use the leveling detection mechanism on the installation pipe to measure the thickness of the sediment at multiple positions after leveling the bottom of the pile pit, and then process the data detected at multiple positions to obtain an accurate sediment thickness value.

[0015] Compared with the prior art, a detection device and method for the thickness of sediment at the bottom of a bored pile used in engineering construction provided by the present invention have the following beneficial effects: The first electric telescopic rod drives the installation box and the like to move downward, and in combination with the transmission mechanism, the leveling self-check mechanism rotates, so that the flatness of the sediment at the bottom of the pile pit can be self-checked. When an uneven position is found, it can accurately locate and drive the leveling ring to reciprocate to level the sediment. During the movement, the extrusion rubber liquid bag is used to drive the water-driven impeller, and through transmission, the cutting ring and the blade rotate to break the harder sediment, and then reciprocally stir the raised sediment to evenly level the sediment at the bottom of the pile pit. After leveling for a period of time, the leveling self-check mechanism self-checks this position. When it is detected that this position is flat, then the installation pipe is driven to level the next position, and so on, so that the sediment at the bottom of the pile pit can be fully leveled, effectively improving the accuracy of subsequent sediment thickness detection, ensuring the construction quality of the pile pit, and providing a reliable foundation for the subsequent project.

[0016] (2) The transmission ring drives the leveling box and the transmission column to rotate. When the bottom of the pile pit tends to be flat and the transmission columns move up to the same height and the through holes are in the same height range, the infrared induction switch is turned on. If it is turned on after one full rotation, it indicates that the bottom is tending to be flat and self-checking can be achieved. If the bottom is uneven, the infrared induction switch is turned off, and the installation pipe will be driven to rotate to the uneven position to continue leveling until the self-check is qualified. After the self-check is completed, the third electric telescopic rod drives the wiping plate to move downward, and the leveling box drives the wiping plate to rotate to level again, further improving the flatness of the sediment at the bottom of the pile pit when detecting the thickness of the sediment.

[0017] After the sediment is leveled, it is fixed by adsorbing and installing an iron block with a fixed electromagnet block. Then, the second electric telescopic rod drives the measuring column to move downward, and the pulling force sensor is used to accurately control the measuring column to contact the bottom of the pile pit. At this time, the telescopic amount is read and a specific distance is subtracted to obtain the sediment thickness. The measuring method is scientific and accurate. At the same time, by driving the leveling ring to move and the installation pipe to rotate, the measuring column can be measured at multiple positions, obtaining multiple data values. After excluding the smaller values caused by encountering hard stones, the average value of the remaining values is calculated, effectively improving the accuracy of the detection. This detection method of multi-position measurement and data processing can more comprehensively and accurately reflect the sediment thickness situation, providing a reliable basis for subsequent construction. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0019] Figure 1 is the first three-dimensional view of the external structure of the present invention; Figure 2 is the second three-dimensional view of the external structure of the present invention; Figure 3 is the three-dimensional view of the internal structure of the present invention; Figure 4 is the three-dimensional view of the internal part of the installation pipe and the external structure of the leveling and detecting mechanism of the present invention; Figure 5 is the side view of the internal structure of the leveling ring of the present invention; Figure 6 is the front view of the internal structure of the installation box of the present invention; Figure 7 is the top view of the internal structure of the sliding box of the present invention; Figure 8 is the present invention Figure 3 the enlarged view of A in; Figure 9 is the present invention Figure 4 the enlarged view of B in; Figure 10 is the present invention Figure 5 the enlarged view of C in; Figure 11 is the present invention Figure 7 the enlarged view of D in.

[0020] Description of the Reference Numerals: 1. Sliding box; 2. First electric telescopic rod; 3. Installation box; 4. Transmission ring; 5. Installation iron block; 6. L-shaped support plate; 7. Fixed electromagnet block; 8. Installation pipe; 11. First transmission motor; 12. Threaded rod; 13. Transmission block; 14. Guide rod; 15. Electromagnetic iron plate; 16. Smoothing ring; 17. Function cavity; 18. Permanent magnet block; 19. Cutting ring; 190. Blade; 191. Raking claw; 21. Rubber liquid sac; 22. Transmission hose; 23. Electromagnetic valve; 24. Drive box; 25. Drive shaft; 26. Impeller; 27. One-way drive gear; 28. Drive gear ring; 29. Extrusion block; 31. Installation plate; 32. Second electric telescopic rod; 33. First connecting plate; 34. Tensile sensor; 35. Second connecting plate; 36. Measuring column; 41. Smoothing box; 42. Transmission column; 43. Retaining ring; 44. First roller; 45. Through hole; 46. Infrared induction switch; 47. Third electric telescopic rod; 48. Smoothing plate; 51. Fixed column; 52. Fixed frame; 53. Telescopic rod; 54. Limiting wheel; 55. Spring; 56. Contact rod; 57. Contact switch; 61. Adjusting motor; 62. First transmission shaft; 63. First gear; 64. Adjusting gear ring; 65. Second gear; 66. Transmission rack; 71. Second transmission motor; 72. Second transmission shaft; 73. Transmission gear; 74. Transmission gear ring. Detailed implementation manner

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further introduced in detail below in conjunction with the accompanying drawings.

[0022] Embodiment 1

[0023] Please refer to Figures 1 to 11 As shown in the figure, a detection device for the thickness of bottom sediment of a bored pile used in engineering construction includes: A sliding box 1, the bottom of the sliding box 1 is fixedly connected with a first electric telescopic rod 2, the bottom end of the first electric telescopic rod 2 is fixedly connected with an installation box 3, a transmission ring 4 is rotatably connected to the installation box 3, a transmission mechanism is arranged in the installation box 3, and the transmission mechanism is used to drive the transmission ring 4 to rotate. Two installation iron blocks 5 are rotatably connected to the outer surface of the transmission ring 4, and two L-shaped support plates 6 are fixedly connected to the outer surface of the transmission ring 4. The top of one of the L-shaped support plates 6 is fixedly connected with a fixed electromagnet block 7; One side of one of the installation iron blocks 5 is fixedly connected with an installation pipe 8 through bolts, and a smoothing and detection mechanism is arranged on the installation pipe 8. The smoothing and detection mechanism is used to smooth the bottom sediment of the pile and detect the thickness of the smoothed sediment; One side of the other installation iron block 5 is fixedly connected with a self-inspection mechanism for smoothing. The self-inspection mechanism for smoothing is used to self-inspect the sediment after the bottom of the pile is smoothed; A limit fixing mechanism is provided on the sliding box 1 , and the limit fixing mechanism is used to limit and fix the sliding box 1 .

[0024] The transmission mechanism includes a second transmission motor 71 fixedly connected to the installation box 3. The second transmission motor 71 is controlled by a PLC programming program to control the second transmission motor 71 to rotate forward and reverse and rotate at an angle. The output end of the second transmission motor 71 is fixedly connected to a second transmission shaft 72 through a coupling. The outer surface of the second transmission shaft 72 is fixedly sleeved with a transmission gear 73. The outer surface of the transmission gear 73 is meshed with a transmission ring gear 74 fixedly connected to the transmission ring 4. The second transmission shaft 72 is driven to rotate by the second transmission motor 71. The second transmission shaft 72 drives the transmission ring gear 74 to rotate through the transmission gear 73. The transmission ring gear 74 drives the transmission ring 4 to rotate; The limiting fixing mechanism includes a plurality of fixed columns 51 slidably connected to the sliding box 1, one end of the fixed column 51 is fixedly connected to a fixed frame 52, a telescopic rod 53 is fixedly connected inside the fixed frame 52, one end of the telescopic rod 53 is fixedly connected to a limiting wheel 54 through a connecting frame, a spring 55 is fixedly sleeved on the outer surface of the telescopic rod 53, a resistance rod 56 is slidably connected to the installation box 3, a stopper is fixedly connected to the outer surface of the resistance rod 56, and a resistance switch 57 is fixedly connected to the bottom end of the resistance rod 56, and the outer surface of the fixed column 51 is transmission-connected to a transmission adjustment mechanism connected to the sliding box 1, and the transmission adjustment mechanism is used to drive the fixed column 51 to move.

[0025] The transmission adjustment mechanism includes an adjusting motor 61 fixedly connected to the sliding box 1. The adjusting motor 61 is controlled by a PLC programming program, and can control the adjusting motor 61 to rotate forward and backward and rotate at an angle. The output end of the adjusting motor 61 is fixedly connected to the first transmission shaft 62 through a coupling. The outer surface of the first transmission shaft 62 is fixedly sleeved with a first gear 63. The outer surface of the first gear 63 is meshed with an adjusting ring gear 64 rotatably connected to the sliding box 1. The inner surface of the adjusting ring gear 64 is meshed with a plurality of second gears 65. The outer surface of the second gear 65 is meshed with a transmission rack 66 fixedly connected to the fixed column 51. The first transmission shaft 62 is driven to rotate by the adjusting motor 61. The first transmission shaft 62 drives the adjusting ring gear 64 to rotate through the first gear 63. The adjusting ring gear 64 drives the plurality of second gears 65 to rotate. The second gear 65 drives the transmission rack 66 to move, and the transmission rack 66 drives the fixed column 51 to move.

[0026] By fixing the suspension rope on the hanging ear at the top of the sliding box 1, and then driving the fixed column 51 to move through the transmission adjustment mechanism, the fixed column 51 drives the fixed frame 52 and the limiting wheel 54 to move, so that the limiting wheel 54 fits on the inner wall of the pile pit. Then, slowly lower the sliding box 1 downward. Through the limitation of the limiting wheel 54, the stability of the sliding box 1 during the descending process is improved. The sliding box 1 drives the first electric telescopic rod 2 and the installation box 3 to move downward. When the contact switch 57 at the bottom of the contact rod 56 on the installation box 3 starts to abut against the bottom of the pile foundation, it means that the detection position has been reached. Then, the contact switch 57 controls the operation of the transmission adjustment mechanism, and the transmission adjustment mechanism drives the fixed column 51 to move again. The fixed column 51 drives the fixed frame 52 to move, so that the fixed frame 52 abuts against the inner wall of the pile pit. At this time, the telescopic rod 53 and the spring 55 contract, and the limiting wheel 54 enters the fixed frame 52. At the same time, the fixed frame 52 tightly abuts against the inner wall of the pile pit for fixation, realizing the fixation of the sliding box 1, so that the whole device remains stable during the subsequent detection process. Then, drive the installation box 3 to move downward slowly through the first electric telescopic rod 2. During the moving process, drive the transmission ring 4 to rotate through the transmission mechanism. The transmission ring 4 drives the installation iron block 5 to rotate. The installation iron block 5 drives the leveling and self-checking mechanism to rotate. The leveling and self-checking mechanism detects the bottom of the pile pit. When it is detected that there is accumulation at the bottom of the pile pit, at this time, drive the leveling detection mechanism on the installation pipe 8 to rotate. Through the leveling detection mechanism, the sediment accumulated at the bottom of the pile foundation is fully leveled, improving the leveling effect of the sediment at the bottom of the pile, and improving the accuracy of the subsequent thickness detection. After leveling, then detect the bottom of the pile pit after leveling through the leveling detection mechanism. When it is detected that the bottom of the pile pit is flat, then detect the sediment thickness at multiple positions at the bottom of the sediment through the leveling detection mechanism, effectively avoiding the influence of hard sand and gravel in the sediment on the measurement, so as to obtain an accurate sediment thickness value, and further improving the accuracy of the detection of the sediment thickness at the bottom of the pile.

[0027] At the same time, adjust the position of the limiting wheel 54 according to the size of the pile pit. At the same time, the sliding box 1 can be fixed in pile pits with different inner diameters. When detecting different pile pits, at this time, only need to replace the leveling detection mechanism and the leveling and self-checking mechanism on the transmission ring 4, so as to realize that the detection device can be applied to detect different pile pit sediments.

[0028] Embodiment 2

[0029] On the basis of Embodiment 1, please refer to Figure 1 、 Figure 4 、 Figure 5 、 Figure 9 and Figure 10As shown in the figure, the leveling detection mechanism includes a first drive motor 11 fixedly connected inside the installation pipe 8. The first drive motor 11 is controlled by a PLC programming program, which can control the forward and reverse rotation and the rotation angle of the first drive motor 11. The output end of the first drive motor 11 is fixedly connected with a threaded rod 12 rotatably connected to the installation pipe 8 through a coupling. A transmission block 13 is in threaded cooperation with the outer surface of the threaded rod 12. A guide rod 14 fixedly connected to the installation pipe 8 is slidably connected to the transmission block 13. An electromagnetic iron plate 15 is fixedly connected to the outer surface of the transmission block 13. A leveling ring 16 is slidably connected to the outer surface of the installation pipe 8. A functional cavity 17 is provided on the leveling ring 16. A permanent magnet block 18 is fixedly connected inside the functional cavity 17. A cutting ring 19 is rotatably connected to the outer surface of the leveling ring 16. A plurality of blades 190 are fixedly connected to the cutting ring 19. A rake claw 191 is fixedly connected to one side of the leveling ring 16; A drive mechanism connected to the installation pipe 8 is provided inside the functional cavity 17. The drive mechanism is used to drive the cutting ring 19 to rotate. A thickness detection mechanism is connected to one side of the leveling ring 16. The thickness detection mechanism is used to detect the depth of the sediment. The thickness detection mechanism is connected to the leveling self-check mechanism on the installation iron block 5.

[0030] The drive mechanism includes two rubber liquid bags 21 fixedly connected inside the installation pipe 8. One side of the rubber liquid bag 21 is fixedly connected with a transmission hose 22 fixedly connected to the leveling ring 16. An electromagnetic valve 23 is fixedly connected to the transmission hose 22. One end of the transmission hose 22 is fixedly connected with a drive box 24 fixedly connected to the functional cavity 17. A drive shaft 25 is rotatably connected inside the drive box 24. An impeller 26 is fixedly connected to the outer surface of the drive shaft 25. A one-way drive gear 27 is fixedly sleeved on the outer surface of the drive shaft 25. The one-way drive gear 27 is a prior art, so no more details will be described here. For example, the flywheel gear of the rear wheel of a bicycle can only drive the shaft to rotate in one direction and does not drive the shaft to rotate when the flywheel gear rotates in the reverse direction. A drive gear ring 28 fixedly connected to the cutting ring 19 is meshed with the outer surface of the one-way drive gear 27. Extrusion blocks 29 are fixedly connected to both sides of the transmission block 13; A drive wheel slidably connected to the installation pipe 8 is rotatably connected inside the leveling ring 16. Mud guard plates are fixedly connected to both sides of the leveling ring 16.

[0031] After the sliding box 1 is fixed, the installation box 3 and the transmission ring 4 are driven downward by the first electric telescopic rod 2. After each movement of a certain distance, the transmission ring 4 is then driven to rotate by the transmission mechanism. At the same time, the transmission ring 4 drives the leveling self-inspection mechanism to rotate. The leveling self-inspection mechanism performs self-inspection on the flatness of the sediment at the bottom of the pile pit. When an uneven position is detected, the transmission ring 4 drives the installation iron block 5 and the installation pipe 8 to rotate to the detected uneven position. Then, the threaded rod 12 is driven to rotate by the first transmission motor 11, and the threaded rod 12 drives the transmission block 13 to move. The transmission block 13 drives the electromagnet plate 15 to move, and the electromagnet plate 15 is energized to generate suction to the permanent magnet block 18 in the smoothing circle 16, driving the permanent magnet block 18 and the smoothing circle 16 to move, thereby driving the smoothing circle 16 to move back and forth. At the same time, during the movement, the extrusion block 29 is driven to move by the transmission block 13. When the water in the rubber liquid bag 21 on one side is squeezed, the electromagnetic valve 23 on the corresponding transmission hose 22 is opened at this time, and then the water quickly enters the drive box 24 through the transmission hose 22, and then the impeller 26 in the drive box 24 is driven under the impact of the water flow. The impeller 26 drives the drive shaft 25 to rotate, the drive shaft 25 drives the one-way drive gear 27 to rotate, the one-way drive gear 27 drives the drive ring gear 28 to rotate, the drive ring gear 28 drives the cutting ring 19 to rotate, the cutting ring 19 drives the blade 190 to rotate, the blade 190 cuts the harder sediment, and at the same time, water enters another rubber liquid bag 21. When moving in the opposite direction, the water in the other rubber liquid bag 21 is squeezed, and then the electromagnetic valve 23 on the other transmission hose 22 is opened, and the electromagnetic valve 23 just now is closed, and then the water enters the other In the drive box 24, the above-mentioned action is repeated to drive the cutting ring 19 to rotate, thereby realizing the reciprocating rotation of the blade 190 in the process of reciprocatingly shifting the sediment, so that the harder sediment is broken, and then the reciprocating shift is performed to smooth the raised sediment, so as to facilitate the uniform smoothing of the sediment at the bottom of the pile pit. After smoothing for a period of time, the position is self-checked by the smoothing self-inspection mechanism. When the position is detected to be flat, the mounting pipe 8 is then driven to smooth the next position, and the above-mentioned action is repeated to achieve sufficient smoothing of the sediment at the bottom of the pile pit, thereby improving the accuracy of subsequent thickness detection.

[0032] Example 3

[0033] Based on Example 1, please refer to Figure 1 、 Figure 3 and Figure 8As shown in the figure, the leveling self-check mechanism includes a leveling box 41 fixedly connected to the installation iron block 5. A plurality of transmission columns 42 are slidably connected to the leveling box 41. A retaining ring 43 is fixedly connected to the outer surface of the transmission column 42. The bottom end of the transmission column 42 is rotatably connected to a first roller 44 through a connecting frame. Two through holes 45 are provided on the transmission column 42. An infrared induction switch 46 is fixedly connected inside the leveling box 41. A third electric telescopic rod 47 is fixedly connected inside the leveling box 41. The bottom end of the third electric telescopic rod 47 is fixedly connected to a leveling plate 48 slidably connected to the leveling box 41.

[0034] During the above leveling process, when the installation pipe 8 is in the horizontal position during the downward rotation process, when driving the transmission ring 4 to rotate, the transmission ring 4 drives the leveling box 41 to rotate, and the leveling box 41 drives the transmission column 42 to move. When the bottom of the pile pit tends to be flat, at the same time, the installation box 3 drives the transmission column 42 to move upward. At this time, the first roller 44 at the bottom of each transmission column 42 moves on the bottom of the pile pit. Since the bottom of the pile pit tends to be flat, the upward movement height of each transmission column 42 is the same at this time. When the through holes 45 above and below each transmission column 42 are within the same height range, the infrared rays of the infrared induction switch 46 are directed at the receiver of the infrared induction switch 46. At this time, the infrared induction switch 46 is turned on. When driving the leveling box 41 to rotate one circle, when the infrared induction switch 46 is always on, it means that the bottom of the pile pit tends to be flat. Before leveling the bottom of the pile pit, when the bottom of the pile pit is uneven, driving the leveling box 41 to move downward at this time, some first rollers 44 will drive the transmission column 42 to move downward or upward. At this time, the through holes 45 above the transmission column 42 are not on the same horizontal line. At this time, the infrared induction switch 46 is turned off, and it is necessary to continue to level the bottom of the foundation pit. At the same time, according to the rotation position of the leveling box 41, drive the installation pipe 8 to rotate to this uneven position and level this position. Repeat the above actions in turn until after the leveling box 41 drives the transmission column 42 to rotate one circle, the infrared induction switch 46 can always be shot at the receiver on the through hole 45 below the transmission column 42, and the infrared induction switch 46 is in the on state. At this time, it means that the sediment at the bottom of the pile pit tends to be flat, and stop the leveling of the leveling mechanism to realize the self-check of the flatness of the bottom of the foundation pit. After the self-check is completed, drive the leveling plate 48 to move downward through the third electric telescopic rod 47. Then, the leveling box 41 drives the leveling plate 48 to rotate, and the leveling plate 48 levels the bottom of the pile pit that has tended to be flat again to further improve the flatness of the sediment at the bottom of the pile pit. Then, the thickness detection mechanism on the installation pipe 8 is used to detect the thickness of the sediment.

[0035] Embodiment 4

[0036] On the basis of Embodiment 1, please refer to Figure 3 、 Figure 4 and Figure 9As shown in the figure, the thickness detection mechanism includes a mounting plate 31 fixedly connected to the leveling ring 16. A second electric telescopic rod 32 is fixedly connected to the mounting plate 31. The top end of the second electric telescopic rod 32 is fixedly connected to a first connecting plate 33. A tension sensor 34 is fixedly connected to the top of the first connecting plate 33. The top of the tension sensor 34 is fixedly connected to a second connecting plate 35. A measuring column 36 fixedly connected to the mounting plate 31 is fixedly connected to the bottom of the second connecting plate 35. The second electric telescopic rod 32 is connected to the leveling self-check mechanism on the mounting iron block 5; After the sediment at the bottom of the pile pit is leveled, the mounting iron block 5 on the mounting pipe 8 is then adsorbed by the fixed electromagnet block 7 to fix the mounting iron block 5. Subsequently, the first connecting plate 33 is driven to move downward by the second electric telescopic rod 32. The first connecting plate 33 drives the second connecting plate 35 to move through the tension sensor 34. The second connecting plate 35 drives the measuring column 36 to move downward. At the same time, during the downward movement, when the tension of the tension sensor 34 reaches a predetermined value, and at this time the second electric telescopic rod 32 no longer drives the measuring column 36 to continue moving downward, it indicates that the measuring column 36 touches the bottom of the pile pit. At this time, the telescopic amount of the second electric telescopic rod 32 is read. At the same time, subtracting the distance from the through holes 45 above and below the transmission column 42 to the bottom of the first roller 44 from the telescopic amount is the thickness of the sediment. At the same time, during the measurement process, by driving the leveling ring 16 to move and driving the mounting pipe 8 to rotate, the leveling ring 16 drives the measuring column 36 to move to multiple positions, and then measurements are taken at multiple positions to obtain multiple data values. Subsequently, some smaller values are excluded, indicating that the measuring column 36 encounters hard stones and cannot continue to move downward. Then, the remaining values are averaged to further improve the accuracy of the detection after sedimentation.

[0037] Embodiment Five

[0038] A detection method for the thickness of the bottom sediment of a rotary drilling pile used in engineering construction includes the following steps: Step 1: Slowly lower the sliding box into the pile pit to the position for detection, and then fix the sliding box; Step 2: The first electric telescopic rod 2 at the bottom of the sliding box 1 drives the mounting box 3 to move downward. At the same time, the transmission ring 4 on the mounting box 3 rotates, driving the leveling self-check mechanism and the mounting pipe 8 to rotate. The leveling self-check mechanism self-checks the flatness of the sediment at the bottom of the pile pit. When unevenness is detected, the leveling detection mechanism on the mounting pipe 8 levels the uneven position, and at the same time cooperates with the leveling self-check mechanism until the sediment at the bottom of the pile pit is completely leveled; Step 3: The thickness of the sediment leveled at the bottom of the pile pit is measured at multiple positions through the leveling detection mechanism on the mounting pipe 8, and then the data detected at multiple positions are processed to obtain an accurate sediment thickness value.

[0039] Working principle: Fix the suspension rope on the hanging ear at the top of the sliding box 1, and then drive the fixed column 51 to move through the transmission adjustment mechanism. The fixed column 51 drives the fixed frame 52 and the limit wheel 54 to move, so that the limit wheel 54 fits on the inner wall of the pile pit. Then slowly lower the sliding box 1 downward. Through the limitation of the limit wheel 54, the stability of the sliding box 1 during the descending process is improved. The sliding box 1 drives the first electric telescopic rod 2 and the installation box 3 to move downward. When the contact switch 57 at the bottom of the contact rod 56 on the installation box 3 starts to abut against the bottom of the pile foundation, it means that the detection position has been reached. Then the contact switch 57 controls the operation of the transmission adjustment mechanism. The transmission adjustment mechanism drives the fixed column 51 to move again. The fixed column 51 drives the fixed frame 52 to move, so that the fixed frame 52 abuts against the inner wall of the pile pit. At this time, the telescopic rod 53 and the spring 55 contract, and the limit wheel 54 enters the fixed frame 52. At the same time, the fixed frame 52 tightly abuts against the inner wall of the pile pit for fixation, realizing the fixation of the sliding box 1, so that the whole device remains stable during the subsequent detection process. Then drive the installation box 3 to move slowly downward through the first electric telescopic rod 2. During the moving process, drive the transmission ring 4 to rotate through the transmission mechanism. The transmission ring 4 drives the installation iron block 5 to rotate. The installation iron block 5 drives the leveling and self-inspection mechanism to rotate. The leveling and self-inspection mechanism detects the bottom of the pile pit. When it is detected that there is accumulation at the bottom of the pile pit, then drive the leveling and detection mechanism on the installation pipe 8 to rotate. Through the leveling and detection mechanism, the sediment accumulated at the bottom of the pile foundation is fully leveled, improving the leveling effect of the pile bottom sediment and the accuracy of the subsequent thickness detection. After leveling, then detect the bottom of the pile pit after leveling through the leveling and detection mechanism. When it is detected that the bottom of the pile pit is flat, then detect the sediment thickness at multiple positions at the bottom of the sediment through the leveling and detection mechanism, effectively avoiding the influence of hard sand and gravel in the sediment on the measurement, so as to obtain an accurate sediment thickness value and further improve the accuracy of the detection of the pile bottom sediment thickness.

[0040] Only some exemplary embodiments of the present invention have been described by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A detecting device for the thickness of sediment at the bottom of a rotary drilling pile used in engineering construction, characterized in that, Including: A sliding box (1), the bottom of the sliding box (1) is fixedly connected with a first electric telescopic rod (2), the bottom end of the first electric telescopic rod (2) is fixedly connected with an installation box (3), a transmission ring (4) is rotatably connected to the installation box (3), a transmission mechanism is arranged in the installation box (3), the transmission mechanism is used to drive the transmission ring (4) to rotate, two installation iron blocks (5) are rotatably connected to the outer surface of the transmission ring (4), two L-shaped support plates (6) are fixedly connected to the outer surface of the transmission ring (4), and a fixed electromagnet block (7) is fixedly connected to the top of one of the L-shaped support plates (6); One side of one of the installation iron blocks (5) is fixedly connected with an installation pipe (8) through bolts, a leveling detection mechanism is arranged on the installation pipe (8), and the leveling detection mechanism is used to level the bottom sediment of the pile and detect the thickness of the leveled sediment; One side of the other installation iron block (5) is fixedly connected with a leveling self-inspection mechanism through bolts, and the leveling self-inspection mechanism is used to self-inspect the sediment after the bottom of the pile is leveled; A limit fixing mechanism is arranged on the sliding box (1), and the limit fixing mechanism is used to limit and fix the sliding box (1).

2. The thickness detection device for the bottom sediment of a rotary drilling pile used in engineering construction according to claim 1, characterized in that, The leveling detection mechanism includes a first transmission motor (11) fixedly connected in the installation pipe (8), the output end of the first transmission motor (11) is fixedly connected with a threaded rod (12) rotatably connected to the installation pipe (8) through a coupling, a transmission block (13) is in threaded cooperation with the outer surface of the threaded rod (12), a guide rod (14) fixedly connected to the installation pipe (8) is slidably connected to the transmission block (13), an electromagnetic iron plate (15) is fixedly connected to the outer surface of the transmission block (13), a leveling ring (16) is slidably connected to the outer surface of the installation pipe (8), a functional cavity (17) is formed in the leveling ring (16), a permanent magnet block (18) is fixedly connected in the functional cavity (17), a cutting ring (19) is rotatably connected to the outer surface of the leveling ring (16), a plurality of blades (190) are fixedly connected to the cutting ring (19), and a rake claw ( ​ 3. The thickness detection device for the bottom sediment of a rotary drilling pile used in engineering construction according to claim 2, wherein, The driving mechanism includes two rubber liquid sacs (21) fixedly connected inside the mounting pipe (8). One side of the rubber liquid sac (21) is fixedly connected with a transmission hose (22) fixedly connected to the smoothing ring (16). An electromagnetic valve (23) is fixedly connected to the transmission hose (22). One end of the transmission hose (22) is fixedly connected with a driving box (24) fixedly connected to the functional cavity (17). A driving shaft (25) is rotatably connected inside the driving box (24). An impeller (26) is fixedly connected to the outer surface of the driving shaft (25). A one-way driving gear (27) is fixedly sleeved on the outer surface of the driving shaft (25). The outer surface of the one-way driving gear (27) is meshed with a driving gear ring (28) fixedly connected to the cutting ring (19). Extrusion blocks (29) are fixedly connected to both sides of the transmission block (13).

4. The thickness detection device for the bottom sediment of a rotary drilling pile used in engineering construction according to claim 2, wherein, The thickness detection mechanism includes a mounting plate (31) fixedly connected to the smoothing ring (16). A second electric telescopic rod (32) is fixedly connected to the mounting plate (31). The top of the second electric telescopic rod (32) is fixedly connected with a first connecting plate (33). A tension sensor (34) is fixedly connected to the top of the first connecting plate (33). The top of the tension sensor (34) is fixedly connected with a second connecting plate (35). A measuring column (36) fixedly connected to the mounting plate (31) is fixedly connected to the bottom of the second connecting plate (35). The second electric telescopic rod (32) is connected to the smoothing self-checking mechanism on the mounting iron block (5).

5. The thickness detection device for the bottom sediment of a rotary drilling pile used in engineering construction according to claim 4, characterized in that, The smoothing self-checking mechanism includes a smoothing box (41) fixedly connected to the mounting iron block (5). A plurality of transmission columns (42) are slidably connected to the smoothing box (41). A retaining ring (43) is fixedly connected to the outer surface of the transmission column (42). A first roller (44) is rotatably connected to the bottom end of the transmission column (42) through a connecting frame. Two through holes (45) are formed in the transmission column (42). An infrared induction switch (46) is fixedly connected inside the smoothing box (41). A third electric telescopic rod (47) is fixedly connected inside the smoothing box (41). The bottom end of the third electric telescopic rod (47) is fixedly connected with a smoothing plate (48) slidably connected to the smoothing box (41).

6. The thickness detection device for the bottom sediment of a rotary drilling pile used in engineering construction according to claim 1, wherein, The limit fixing mechanism includes a plurality of fixing columns (51) slidably connected to the sliding box (1). One end of the fixing column (51) is fixedly connected with a fixing frame (52). A telescopic rod (53) is fixedly connected inside the fixing frame (52). A limit wheel (54) is fixedly connected to one end of the telescopic rod (53) through a connecting frame. A spring (55) is fixedly sleeved on the outer surface of the telescopic rod (53). A resisting rod (56) is slidably connected to the mounting box (3). A blocking block is fixedly connected to the outer surface of the resisting rod (56). The bottom end of the resisting rod (56) is fixedly connected with a resisting switch (57). The outer surface of the fixing column (51) is drivingly connected with a transmission adjusting mechanism connected to the sliding box (1), and the transmission adjusting mechanism is used to drive the fixing column (51) to move.

7. An apparatus for detecting the thickness of sediment at the bottom of a bored pile used in engineering construction according to claim 6, characterized in that, The transmission adjustment mechanism includes an adjustment motor (61) fixedly connected to the sliding box (1). The output end of the adjustment motor (61) is fixedly connected to a first transmission shaft (62) through a coupling. A first gear (63) is fixedly sleeved on the outer surface of the first transmission shaft (62). An adjustment gear ring (64) rotatably connected to the sliding box (1) is meshed with the outer surface of the first gear (63). A plurality of second gears (65) are meshed with the inner surface of the adjustment gear ring (64). A transmission rack (66) fixedly connected to the fixed column (51) is meshed with the outer surface of the second gear (65).

8. The thickness detection device for the bottom sediment of a rotary drilled pile used in engineering construction according to claim 1, wherein, The transmission mechanism includes a second transmission motor (71) fixedly connected to the installation box (3). The output end of the second transmission motor (71) is fixedly connected to a second transmission shaft (72) through a coupling. A transmission gear (73) is fixedly sleeved on the outer surface of the second transmission shaft (72). A transmission gear ring (74) fixedly connected to the transmission ring (4) is meshed with the outer surface of the transmission gear (73).

9. The thickness detection device for the bottom sediment of a rotary drilling pile used in engineering construction according to claim 2, wherein, A driving wheel rotatably connected to the installation pipe (8) is rotatably connected inside the leveling ring (16). Mud guard plates are fixedly connected to both sides of the leveling ring (16).

10. The detection method of a detection device for the thickness of sediment at the bottom of a bored pile for engineering construction according to any one of claims 1-9, characterized in that, It includes the following steps: Step 1: Slowly place the sliding box into the pile pit to the position for detection, and then fix the sliding box. Step 2: The first electric telescopic rod (2) at the bottom of the sliding box (1) drives the installation box (3) to move downward. At the same time, the transmission ring (4) on the installation box (3) rotates, driving the leveling and self-checking mechanism and the installation pipe (8) to rotate. The leveling and self-checking mechanism self-checks the flatness of the sediment at the bottom of the pile pit. When unevenness is detected, the leveling detection mechanism on the installation pipe (8) levels the uneven position and cooperates with the leveling and self-checking mechanism until the sediment at the bottom of the pile pit is completely leveled. Step 3: The leveling detection mechanism on the installation pipe (8) measures the thicknesses at multiple positions of the sediment after leveling at the bottom of the pile pit, and then processes the data detected at multiple positions to obtain an accurate sediment thickness value.

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