Pile hole multi-parameter real-time acquisition device in pile foundation hole forming process

Abstract

The invention belongs to the technical field of pile foundation construction, and particularly relates to a pile hole multi-parameter real-time acquisition device in a pile foundation hole forming process, which comprises a rigid base, fine adjustment mechanisms are arranged on the outer side surface of the rigid base in an array manner, and hammer bodies are arranged below the fine adjustment mechanisms. According to the collecting device, by arranging the inertial measurement unit and the fine adjustment mechanism, automation and precision of angle deviation correction are achieved, quick response can be achieved, the adjustment action can be completed, the downtime in the construction process is shortened, the construction efficiency is improved, stable angle control ensures the quality consistency of each pile hole, the quality fluctuation risk is reduced, and the construction quality is improved. The overall construction quality is improved; the sediment thickness at the bottom of the pile hole can be accurately measured by arranging the detection mechanism, accurate data support is provided for constructors, the constructors can timely judge whether hole cleaning operation needs to be carried out or not according to the sediment thickness monitored in real time, the situation that pile foundation sedimentation is too large due to too thick sediment is avoided, and it is guaranteed that the bearing performance of the pile foundation meets the design requirement.

Description

Technical Field

[0001] The invention relates to the technical field of pile foundation construction, and in particular to a pile hole multi-parameter real-time acquisition device in a pile foundation hole forming process. Background Art

[0002] Pile foundation drilling refers to the process of forming pile holes that meet the design requirements in the foundation using specific methods and equipment in order to build pile foundations in construction projects. Pile foundation is a commonly used deep foundation form that transfers the load of the superstructure to the deeper harder and less compressible soil or rock layer through piles to meet the building's requirements for foundation bearing capacity and deformation.

[0003] However, the traditional pile foundation drilling construction technology has certain limitations. For example, the traditional method can only detect individual parameters of the pile hole, using a simple measuring rope to measure the hole depth and a hanging hammer to roughly determine the verticality. However, it is difficult to fully and accurately grasp the flatness of the hole wall, whether there are tiny cracks inside, the specific distribution and properties of the sediment, and other aspects. This single detection method cannot meet the needs of fine evaluation of the pile hole quality, which can easily lead to some potential quality problems being ignored.

[0004] Moreover, during the drilling process, due to the complex and changeable geological conditions, the working state of the hammer may be affected by various factors. For example, encountering soil layers and rocks of different hardness may cause the hammer to tilt or the drilling deviation. In addition, traditional construction technology lacks an effective real-time monitoring and feedback mechanism. It is difficult for construction personnel to timely understand the actual working state of the hammer and the real-time changes of the pile hole. It is impossible to adjust the construction process and parameters in time according to the actual situation, which easily leads to poor drilling quality.

[0005] In view of the above problems, the present invention proposes a device for real-time acquisition of multiple parameters of pile holes during the pile foundation drilling process. Summary of the invention

[0006] Based on the technical problems that existing pile foundation drilling cannot be monitored in real time and the detection means are single, the present invention proposes a real-time acquisition device for pile hole multi-parameters during the pile foundation drilling process.

[0007] The present invention proposes a real-time acquisition device for multiple parameters of pile holes in a pile foundation drilling process, comprising a rigid base, an outer side array of the rigid base is provided with a fine adjustment mechanism, a hammer body is provided below the fine adjustment mechanism, a detection mechanism is provided at the upper end of the hammer body, a fixing hole is provided at the outer side array of the upper end of the hammer body, a micro camera is fixedly connected to the inner wall of each fixing hole, a silicone sleeve is wrapped around the outer surface of each micro camera, the hammer body is cam-shaped, a connecting piece is provided at the outer surface array of the hammer body, two right-angled sides of each connecting piece are fixedly connected to the outer surface of the hammer body, a hydraulic cylinder is symmetrically provided on the outer surface of a cylinder with a small diameter of the hammer body, a roller is rotatably connected at the end of each hydraulic cylinder, and a hole wall detection mechanism is provided on the main body of the hammer body;

[0008] The fine adjustment mechanism is used to correct the angle of the hammer body;

[0009] The detection mechanism is used to detect the thickness of the sediment in the hole;

[0010] The detection mechanism is used to detect the pile foundation hole wall.

[0011] Preferably, the fine-tuning mechanism includes hydraulic push rods arranged in an array on the outer side of the rigid base, the lower end of each hydraulic push rod is fixedly connected to a ball joint mechanism, the cylindrical outer surface of the hammer body with a small diameter is fixedly connected to a guide ring, the surface of the guide ring passes through the body of each connecting piece respectively, one side of the ball joint mechanism is fixedly connected to the outer surface of the guide ring through a connecting block, the upper end of the hammer body is provided with a cross-axis universal joint, and the upper end of the cross-axis universal joint is fixedly connected to the center of the lower surface of the rigid base.

[0012] Preferably, the detection mechanism includes a circular hole opened at the center of the lower surface of the hammer body, the inner wall of the circular hole is provided with a tungsten carbide alloy bushing adapted thereto, the inner wall array of the tungsten carbide alloy bushing is provided with a limit block, the inner wall of the tungsten carbide alloy bushing is symmetrically provided with a sliding rod, the surface of the sliding rod is slidably connected with a pressure sound wave composite probe rod, the upper end of the pressure sound wave composite probe rod is provided with a double-acting cylinder, the piston rod of the double-acting cylinder is fixedly connected to the upper end of the pressure sound wave composite probe rod, and the cylinder body of the double-acting cylinder is fixedly connected to the inner wall of the tungsten carbide alloy bushing The inner wall of the tungsten carbide alloy bushing is provided with a docking hole, one end of the docking hole extends to the upper end of the hammer body, a spring is arranged on the periphery of the upper end of the docking hole, a bellows is sleeved on the surface of the spring, flanges are arranged on the upper and lower ends of the spring respectively, the lower end flange of the spring is fixedly connected to the upper end of the hammer body, the upper end outer surface and the lower end outer surface of the bellows are fixedly connected to the inner wall of the upper end flange of the spring and the inner wall of the lower end flange respectively, and the air inlet pipe and the air outlet pipe of the double-acting cylinder extend to the outside of the hammer body through the docking hole.

[0013] Preferably, a piezoresistive force sensor is provided at the lower end of the pressure-acoustic wave composite probe.

[0014] Preferably, the detection mechanism includes an annular groove provided at the bottom end of the hammer body, the inner wall of the annular groove is provided with an installation groove in an annular array, the upper end of the hammer body is fixedly connected to an annular water inlet pipe 1, the surface array of the water inlet pipe 1 is provided with an external interface, one-third of the tube body of the water inlet pipe 1 is embedded in the body of the hammer body, and the upper end of the cylinder with a large diameter of the hammer body is provided with a water inlet pipe 2, each of the connecting pieces is embedded in a connecting pipe, half of the tube body of the connecting pipe is embedded in the piece body of the connecting piece, and the inner walls at both ends of each of the connecting pipes are fixedly connected to the inner wall of the water inlet pipe 1 and the inner wall of the water inlet pipe 2 respectively.

[0015] Preferably, the cylindrical annular array with a large diameter of the hammer body is provided with a water outlet hole, and the water outlet hole is "L"-shaped. The inner wall of the lower end of the water outlet hole is provided with a drainage block, the upper inner wall of each water outlet hole is fixedly connected to the inner wall of the water inlet pipe 2, and the lower inner wall of the water outlet hole is fixedly connected to the inner wall of the mounting groove, and the inner wall of each mounting groove is provided with a laser sensor, and the outer surface of each laser sensor is wrapped with a silicone sleeve.

[0016] Preferably, the inclined surface of the drainage block forms an angle of 30 degrees with the laser emitting surface of the laser sensor.

[0017] Preferably, an inertial measurement unit is provided at the upper end of the hammer body, and the wiring terminal of the inertial measurement unit is connected to the hydraulic push rod control system of the fine-tuning mechanism through a data line.

[0018] Preferably, a multi-channel data acquisition module is integrated inside the rigid base, including a wireless transmission unit and a hybrid power supply system. The wireless transmission unit adopts a high-speed, low-latency wireless transmission protocol dedicated to 5G communication technology, and the hybrid power supply system consists of a rechargeable lithium battery pack and an external power supply interface.

[0019] Preferably, a spring damper is provided at the upper end of each laser sensor, and the outer surface of the spring damper is fixedly connected to the inner wall of the mounting groove.

[0020] The beneficial effects of the present invention are:

[0021] 1. By setting up an inertial measurement unit and a fine-tuning mechanism, the angle correction is automated and precise, which can respond quickly and complete the adjustment action, reducing the downtime during construction and improving construction efficiency. At the same time, stable angle control ensures the quality consistency of each pile hole, reduces the risk of quality fluctuations, and improves the overall construction quality.

[0022] 2. By setting up a detection mechanism, the thickness of the sediment at the bottom of the pile hole can be accurately measured, providing accurate data support for construction personnel. Construction personnel can determine whether hole cleaning operations are needed in a timely manner based on real-time monitoring of the sediment thickness, thereby avoiding excessive settlement of the pile foundation due to excessive sediment thickness and ensuring that the bearing capacity of the pile foundation meets the design requirements.

[0023] 3. By setting up the detection mechanism, the laser sensor can quickly obtain the distance data of each point on the hole wall with high-precision distance measurement capability, so as to accurately draw the three-dimensional contour of the hole wall. This helps to accurately detect the shape, size and flatness of the hole wall, timely discover local convexities, concave and other problems, and provide accurate geometric information for the quality assessment of pile foundation construction. At the same time, combined with the micro camera, it can further detect whether there are cracks, holes and other defects on the hole wall surface, assist in judging the appearance of the hole wall material, and provide rich basis for the comprehensive assessment of the hole wall quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of a device for real-time acquisition of multiple parameters of a pile hole during a pile foundation drilling process proposed by the present invention;

[0025] Figure 2 The invention provides a real-time acquisition device for multiple parameters of pile holes in the process of pile foundation drilling. Figure 1 The enlarged view of point A in the middle;

[0026] Figure 3 A half-section diagram of a hammer of a device for real-time acquisition of multiple parameters of pile holes in the process of pile foundation drilling proposed by the present invention;

[0027] Figure 4The invention provides a real-time acquisition device for multiple parameters of pile holes in the process of pile foundation drilling. Figure 3 The enlarged view of point B in the middle;

[0028] Figure 5 The invention provides a real-time acquisition device for multiple parameters of pile holes in the process of pile foundation drilling. Figure 4 The enlarged view of B1 in the middle;

[0029] Figure 6 The invention provides a real-time acquisition device for multiple parameters of pile holes in the process of pile foundation drilling. Figure 3 Enlarged view of point C in the middle;

[0030] Figure 7 A three-dimensional diagram of a pressure-sound wave composite probe rod of a pile hole multi-parameter real-time acquisition device in the pile foundation hole forming process proposed by the present invention;

[0031] Figure 8 This is a bottom view of the hammer of a device for real-time acquisition of multiple parameters of pile holes in the process of pile foundation drilling proposed by the present invention.

[0032] In the figure: 1. rigid base; 2. fine-tuning mechanism; 21. hydraulic push rod; 22. ball joint mechanism; 23. guide ring; 24. cross-axis universal joint; 3. hammer; 4. detection mechanism; 40. round hole; 41. limit block; 42. slide rod; 43. pressure sound wave composite probe rod; 44. double-acting cylinder; 45. docking hole; 46. spring; 5. miniature camera; 6. connecting piece; 7. hydraulic cylinder; 8. detection mechanism; 80. ring groove; 81. water inlet pipe 1; 82. water inlet pipe 2; 83. connecting pipe; 84. water outlet; 85. drainage block; 86. laser sensor; 87. spring damper. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] Reference Figure 1-Figure 8, a pile hole multi-parameter real-time acquisition device during pile foundation drilling process, comprising a rigid base 1, an outer side array of the rigid base 1 is provided with a fine-tuning mechanism 2, a hammer body 3 is provided below the fine-tuning mechanism 2, a detection mechanism 4 is provided at the upper end of the hammer body 3, a fixing hole is opened at the outer side array of the upper end of the hammer body 3, and a micro camera 5 is fixedly connected to the inner wall of each fixing hole, and the lens surface of the micro camera 5 is coated with a super-hydrophobic coating based on silicon dioxide nanoparticles and fluoride and a titanium dioxide self-cleaning coating, and the lens is designed as a hemispherical lens surface. The micro camera 5 can take real-time images of the inside of the pile hole, providing intuitive visual information for construction personnel, helping them to promptly discover abnormal conditions in the pile hole, such as cracks, collapsed holes, etc., so as to facilitate timely measures to deal with them. The extremely low surface energy of the super-hydrophobic material or coating can make it difficult for water in the mud to adhere, and the mud droplets roll down in a nearly spherical shape, which greatly reduces the amount of mud attached to the lens surface. The self-cleaning coating can decompose organic pollutants, reduce mud adhesion, and further reduce residue. This means that after the lens enters and exits the mud, the mud coverage on the surface is greatly reduced, creating good conditions for normal shooting;

[0035] The outer surface of each miniature camera 5 is wrapped with a silicone sleeve, the hammer body 3 is cam-shaped, and the outer surface array of the hammer body 3 is provided with connecting plates 6. The two right-angled sides of each connecting plate 6 are fixedly connected to the outer surface of the hammer body 3, and the outer surface of the small-diameter cylinder of the hammer body 3 is symmetrically provided with hydraulic cylinders 7. A roller is rotatably connected at the end of each hydraulic cylinder 7, and the main body of the hammer body 3 is provided with a hole wall detection mechanism 8.

[0036] The fine adjustment mechanism 2 is used to correct the angle of the hammer 3.

[0037] The detection mechanism 4 is used to detect the thickness of the sediment in the hole.

[0038] The detection mechanism 8 is used to detect the hole wall of the pile foundation.

[0039] In this embodiment, if Figure 3 As shown, the fine-tuning mechanism 2 includes a hydraulic push rod 21 arranged in an array on the outer side of the rigid base 1, and the lower end of each hydraulic push rod 21 is fixedly connected to a ball joint mechanism 22, and the cylindrical outer surface of the hammer body 3 with a small diameter is fixedly connected to a guide ring 23, and the surface of the guide ring 23 passes through the body of each connecting piece 6 respectively. One side of the ball joint mechanism 22 is fixedly connected to the outer surface of the guide ring 23 through a connecting block, and a cross-axis universal joint 24 is provided at the upper end of the hammer body 3, and the upper end of the cross-axis universal joint 24 is fixedly connected to the center of the lower surface of the rigid base 1.

[0040] Specifically, the hydraulic push rods 21 arranged in an array on the outer side of the rigid base 1 can apply force to the hammer body 3 from multiple directions. When the hammer body 3 has an angular deviation during operation, the hydraulic push rods 21 at different positions can be extended and retracted independently or in coordination, and the hammer body 3 is driven to adjust its angle through the ball joint mechanism 22 and the guide ring 23. If the hammer body 3 tilts to one side, the hydraulic push rod 21 on the corresponding side is extended, and the hydraulic push rod 21 on the other side is shortened, thereby achieving accurate correction of the angle of the hammer body 3 and ensuring that the verticality of the pile hole meets the construction requirements; the ball joint mechanism 22 has three degrees of freedom of rotation and can rotate flexibly in all directions, which allows the force transmitted by the hydraulic push rod 21 to act on the hammer body 3 more flexibly and adapt to angular deviations of different directions and degrees. Compared with the traditional rigid connection method, it can more accurately achieve fine-tuning of the angle of the hammer body 3.

[0041] In this embodiment, if Figure 3 , Figure 6 and Figure 7 As shown, the detection mechanism 4 includes a circular hole 40 opened at the center of the lower surface of the hammer body 3, the inner wall of the circular hole 40 is provided with a tungsten carbide alloy bushing adapted thereto, the inner wall array of the tungsten carbide alloy bushing is provided with a limit block 41, the inner wall of the tungsten carbide alloy bushing is symmetrically provided with a slide bar 42, the surface of the slide bar 42 is slidably connected with a pressure sound wave composite probe rod 43, the upper end of the pressure sound wave composite probe rod 43 is provided with a double-acting cylinder 44, the piston rod of the double-acting cylinder 44 is fixedly connected to the upper end of the pressure sound wave composite probe rod 43, and the cylinder body of the double-acting cylinder 44 is connected to the inner wall of the tungsten carbide alloy bushing. Fixed connection, the inner wall of the tungsten carbide alloy bushing is provided with a docking hole 45, one end of the docking hole 45 extends to the upper end of the hammer body 3, a spring 46 is arranged on the periphery of the upper end of the docking hole 45, a bellows is sleeved on the surface of the spring 46, the upper and lower ends of the spring 46 are respectively provided with flanges, the lower end flange of the spring 46 is fixedly connected to the upper end of the hammer body 3, the upper end outer surface and the lower end outer surface of the bellows are respectively fixedly connected to the inner wall of the upper end flange of the spring 46 and the inner wall of the lower end flange, the air inlet pipe and the air outlet pipe of the double-acting cylinder 44 extend to the outside of the hammer body 3 through the docking hole 45.

[0042] Specifically, the inner wall of the circular hole 40 adopts a 15mm thick tungsten carbide alloy bushing to enhance impact resistance and wear resistance, and can absorb and disperse part of the energy generated by the impact, thereby reducing the impact of vibration on itself and surrounding parts; the spring 46 arranged on the periphery of the upper end of the docking hole 45 plays a role of buffering and shock absorption. During the working process of the hammer body 3, a large impact force and vibration will be generated. The spring 46 can absorb this energy, reduce the impact on the double-acting cylinder 44 and its connecting parts, prevent damage or loosening of parts due to excessive vibration, and improve the stability and safety of the equipment; the double-acting The cylinder 44 can accurately control the up and down movement of the pressure sound wave composite probe 43 by extending and retracting the piston rod. Its air inlet pipe and air outlet pipe extend to the outside of the hammer body 3 through the docking hole 45, which is convenient for connection with the external air source and control system, and is convenient for accurate control and operation of the cylinder, thereby improving the detection efficiency and the degree of automation; the air inlet pipe and air outlet pipe of the double-acting cylinder 44 enter the inside of the circular hole 40 through the bellows, and the pipe exposed to the outside of the hammer body 3 is wrapped and protected with a stainless steel hose, and one end of the stainless steel hose is fixedly connected to the flange at the upper end of the spring 46 through a flange.

[0043] In this embodiment, a piezoresistive force sensor is disposed at the lower end of the pressure-acoustic wave composite probe 43 .

[0044] Specifically, when the pressure-sonic wave composite probe 43 descends to the bottom of the pile hole and contacts the sediment, the piezoresistive force sensor can measure the resistance of the pressure-sonic wave composite probe 43 in real time and accurately. As the probe gradually penetrates into the sediment layer, the resistance will change. By analyzing the resistance change curve measured by the force sensor, combined with the pre-set algorithm and experimental data, the thickness of the sediment can be accurately calculated. Compared with traditional measurement methods, this measurement method based on force sensors is more accurate and can provide construction personnel with more reliable data to ensure the construction quality of the pile foundation. In addition, through the analysis and processing of resistance signals, construction personnel can understand the geological conditions around the pile hole in real time and determine whether there are abnormal geological conditions, such as caves, faults, etc. This helps to take corresponding measures in advance to avoid unexpected situations during construction and ensure construction safety and progress.

[0045] In this embodiment, if Figure 1-Figure 6 and Figure 8As shown, the detection mechanism 8 includes an annular groove 80 provided at the bottom end of the hammer body 3, and the inner wall annular array of the annular groove 80 is provided with a mounting groove, the upper end of the hammer body 3 is fixedly connected with an annular water inlet pipe 1 81, and the surface array of the water inlet pipe 1 81 is provided with an external interface, one third of the tube body of the water inlet pipe 1 81 is embedded in the body of the hammer body 3, and the upper end of the large-diameter cylinder of the hammer body 3 is provided with a water inlet pipe 2 82, each connecting piece 6 is embedded with a connecting pipe 83, and half of the tube body of the connecting pipe 83 is embedded in the body of the connecting piece 6, and the inner walls at both ends of each connecting pipe 83 are respectively connected to the inner wall of the water inlet pipe 1 81 and the inner wall of the water inlet pipe 2 82. 2 is fixedly connected; the cylindrical annular array with a large diameter of the hammer body 3 is provided with a water outlet hole 84, and the water outlet hole 84 is "L"-shaped. The inner wall of the lower end of the water outlet hole 84 is provided with a drainage block 85, and the upper inner wall of each water outlet hole 84 is fixedly connected to the inner wall of the water inlet pipe 82, and the lower inner wall of the water outlet hole 84 is fixedly connected to the inner wall of the mounting groove, and the inner wall of each mounting groove is provided with a laser sensor 86, and the outer surface of each laser sensor 86 is wrapped with a silicone sleeve, and a spring damper 87 is provided on the upper end of each laser sensor 86, and the outer surface of the spring damper 87 is fixedly connected to the inner wall of the mounting groove.

[0046] Specifically, water is supplied to the water outlet 84 through the annular water inlet pipe 1 81, the connecting pipe 83 and the water inlet pipe 2 82. The water flows out of the water outlet 84 and passes through the lower surface of the laser sensor 86. The water flow can play a protective role, blocking the mud, gravel and other impurities in the pile hole from directly hitting the laser sensor 86. At the same time, the surface of the laser sensor 86 can be cleaned to prevent dust and dirt from accumulating on the laser emitting surface and receiving surface of the laser sensor 86, thereby ensuring that the laser sensor 86 can work normally and improving the accuracy of the detection data; the silicone sleeve wrapped around the outer surface of each laser sensor 86 has good elasticity and buffering performance. During the working process of the hammer body 3, strong impact and vibration will be generated. The silicone sleeve can absorb and disperse these impact forces to reduce the direct impact on the laser sensor 86. At the same time, combined with the spring damper 87, the spring damper 87 will absorb and consume vibration energy through the elastic deformation of the spring 46 and the effect of the damping medium, thereby reducing the impact of vibration on the laser sensor 86, thereby extending the service life of the laser sensor 86;

[0047] A plurality of laser sensors 86 are arranged in the mounting grooves of the annular array on the inner wall of the annular groove 80, which can detect the inner wall of the pile hole from multiple angles. This all-round detection method can obtain more comprehensive information on the inner wall of the pile hole, avoid detection blind spots, and more accurately detect the shape, size, flatness, and cracks, bulges, and other defects of the inner wall of the pile hole, thereby providing more reliable data for the quality assessment of pile foundation construction.

[0048] During the pile foundation drilling process, the pile hole is usually filled with mud and other media, which places high demands on the performance and stability of the detection equipment. The detection mechanism 8 can effectively cope with the mud environment through water flow protection and cleaning measures, ensuring that the laser sensor 86 works normally under such harsh conditions. At the same time, the water flow can also reduce the viscosity of the mud and reduce the adhesion of the mud to the laser sensor 86, further improving the reliability of the detection.

[0049] In this embodiment, the inclined surface of the drainage block 85 and the laser emitting surface of the laser sensor 86 form an angle of 30 degrees.

[0050] Specifically, when water flows out of the water outlet 84, the inclined surface of the drainage block 85 at an angle of 30 degrees can effectively guide the water flow to the detection area of ​​the laser sensor 86. This angle enables the water flow to pass through the laser emission surface in a suitable direction and speed, which not only ensures that the water flow can fully cover the detection area, but also does not cause excessive interference to the laser due to improper water flow direction; the 30-degree angle helps to form a more uniform distribution of water flow near the laser emission surface, and the uniform water flow can better carry away the suspended particles and impurities in the laser irradiation area, avoiding local water flow dead angles, thereby improving the cleaning effect, ensuring that the laser can clearly irradiate the inner wall of the pile hole, and improving the accuracy of detection.

[0051] In this embodiment, an inertial measurement unit is disposed at the upper end of the hammer body 3 , and a connection terminal of the inertial measurement unit is connected to a control system of a hydraulic push rod 21 of the fine-tuning mechanism 2 via a data line.

[0052] Specifically, the inertial measurement unit (IMU) is usually composed of sensors such as accelerometers and gyroscopes. The accelerometer can measure the acceleration of the hammer body 3 in all directions, and the gyroscope can measure the angular velocity of the hammer body 3. Through the real-time collection and analysis of these data, the posture information of the hammer body 3 in three-dimensional space can be accurately obtained. The inertial measurement unit transmits the collected posture data of the hammer body 3 to the hydraulic push rod 21 control system of the fine-tuning mechanism 2 through the data line. After receiving the data, the control system will compare and analyze according to the preset algorithm and standard posture parameters to determine whether there is an angle deviation of the hammer body 3. If the angle deviation of the hammer body 3 is detected, the control system will immediately issue a corresponding control instruction to the hydraulic push rod 21. According to the direction and size of the deviation, the telescopic length of the hydraulic push rod 21 at different positions is adjusted. For example, if the hammer body 3 tilts to one side, the control system will extend the hydraulic push rod 21 on the corresponding side and shorten the hydraulic push rod 21 on the other side. In this way, the accurate correction of the angle of the hammer body 3 is achieved to ensure that the verticality of the pile hole meets the construction requirements.

[0053] In this embodiment, a multi-channel data acquisition module is integrated inside the rigid base 1, including a wireless transmission unit and a hybrid power supply system. The wireless transmission unit adopts a high-speed, low-latency wireless transmission protocol dedicated to 5G communication technology, and the hybrid power supply system consists of a rechargeable lithium battery pack and an external power supply interface.

[0054] Specifically, the multi-channel data acquisition module can simultaneously collect data from different sensors, such as the data from the miniature camera 5, the pressure acoustic wave composite probe 43, the laser sensor 86, the inertial measurement unit and other sensors; the wireless transmission unit enables construction management personnel to view various data and video information of pile hole construction in real time through the monitoring center in the office or other remote locations, and remotely command and dispatch the construction process, thereby improving management efficiency and timeliness of decision-making.

[0055] Reference Figure 1-Figure 8 , a construction method of a pile hole multi-parameter real-time acquisition device in the pile foundation drilling process:

[0056] Step 1: Before the hammer 3 hits, the rigid base 1 lifts it up through an external lifting system, and the hydraulic cylinder 7 is retracted so that the distance between the rollers at the ends of the two symmetrical hydraulic cylinders 7 is smaller than the diameter of the cylinder at the lower end of the hammer 3. The inertial measurement unit transmits the collected posture data of the hammer 3 to the hydraulic push rod 21 control system of the fine-tuning mechanism 2 through a data line. After receiving the data, the control system will compare and analyze the data according to the preset algorithm and standard posture parameters to determine whether there is an angle deviation of the hammer 3. If an angle deviation of the hammer 3 is detected, the control system will immediately send a corresponding control instruction to the hydraulic push rod 21, and adjust the telescopic length of the hydraulic push rod 21 at different positions according to the direction and size of the deviation. The ball joint mechanism 22 at the lower end of the hydraulic push rod 21 works to complete the precise correction of the angle of the hammer 3 through the guide ring 23.

[0057] Step 2: After the deviation correction is completed, the hammer body 3 starts to perform the impact operation. After the impact operation is completed, the external lifting system lifts it up. During the process, the external water pipe connected to the water inlet pipe 1 81 simultaneously enters water, and the water flows through the connecting pipe 83 to reach the water inlet pipe 2 82. The water source in the water inlet pipe 2 82 is sprayed out through the water outlet 84. The drainage block 85 guides the sprayed water flow to the emitting surface of the laser sensor 86 to flush it. The laser sensor 86 monitors the aperture size and verticality of the pile foundation hole in real time. The information monitored in real time by the laser sensor 86 is uploaded to the terminal through the wireless transmission unit, and the micro camera 5 uploads the image of the inner wall surface of the pile foundation hole to the terminal together;

[0058] Step 3. During the entire hole-making process, as the hammer body continuously impacts downward, at certain depths or time intervals, the double-acting cylinder 44 is controlled to drive the pressure-acoustic composite probe 43 to move out of the circular hole 40, and at the same time, the external lifting system is controlled to adjust the hammer body 3 to move toward the hole until the pressure value transmitted by the piezoresistive force sensor at the end of the pressure-acoustic composite probe 43 is displayed on the terminal. At this time, the external lifting system stops working, and the double-acting cylinder 44 continues to extend through the piston rod, and the pressure-acoustic composite probe 43 is partially immersed in the sediment. The staff monitors the changes in the pressure value in real time to understand the real-time thickness changes of the sediment at the bottom of the hole and the stratification of the rock and soil at the bottom of the hole. If the data detected by the pressure-acoustic composite probe 43 are all within the normal range, the double-acting cylinder 44 is controlled to drive the pressure-acoustic composite probe 43 to shrink into the circular hole 40, and then continue the next impact until the pile foundation is completed. Otherwise, the operator takes corresponding emergency measures according to the abnormal data value and performs the impact hole-making operation again.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for real-time acquisition of multiple parameters of pile holes during pile foundation drilling, comprising a rigid base (1), characterized in that: The outer side array of the rigid base (1) is provided with a fine adjustment mechanism (2), a hammer (3) is provided below the fine adjustment mechanism (2), a detection mechanism (4) is provided at the upper end of the hammer (3), a fixing hole is provided at the outer side array of the upper end of the hammer (3), the inner wall of each fixing hole is respectively fixedly connected with a micro camera (5), the outer surface of each micro camera (5) is respectively wrapped with a silicone sleeve, the hammer (3) is cam-shaped, the outer surface array of the hammer (3) is provided with a connecting piece (6), the two right-angled sides of each connecting piece (6) are respectively fixedly connected with the outer surface of the hammer (3), the outer surface of the small-diameter cylinder of the hammer (3) is symmetrically provided with a hydraulic cylinder (7), the end of each hydraulic cylinder (7) is rotatably connected with a roller, and the body of the hammer (3) is provided with a hole wall detection mechanism (8); The fine adjustment mechanism (2) is used to correct the angle of the hammer (3); The detection mechanism (4) is used to detect the thickness of the sediment in the hole; The detection mechanism (8) is used to detect the wall of the pile foundation hole.

2. The device for real-time acquisition of multiple parameters of pile holes in the process of pile foundation drilling according to claim 1, characterized in that: The fine-tuning mechanism (2) includes a hydraulic push rod (21) arranged in an array on the outer side of the rigid base (1), the lower end of each hydraulic push rod (21) is fixedly connected to a ball joint mechanism (22), the outer surface of the small-diameter cylinder of the hammer body (3) is fixedly connected to a guide ring (23), the surface of the guide ring (23) respectively penetrates the body of each connecting piece (6), one side of the ball joint mechanism (22) is fixedly connected to the outer surface of the guide ring (23) through a connecting block, and the upper end of the hammer body (3) is provided with a cross-axis universal joint (24), and the upper end of the cross-axis universal joint (24) is fixedly connected to the center of the lower surface of the rigid base (1).

3. The device for real-time acquisition of multiple parameters of pile holes in the process of pile foundation drilling according to claim 2, characterized in that: The detection mechanism (4) comprises a circular hole (40) opened at the center of the lower surface of the hammer body (3); the inner wall of the circular hole (40) is provided with a tungsten carbide alloy bushing matched therewith; the inner wall array of the tungsten carbide alloy bushing is provided with a limit block (41); the inner wall of the tungsten carbide alloy bushing is symmetrically provided with a slide bar (42); the surface of the slide bar (42) is slidably connected with a pressure sound wave composite probe rod (43); the upper end of the pressure sound wave composite probe rod (43) is provided with a double-acting cylinder (44); the piston rod of the double-acting cylinder (44) is fixedly connected to the upper end of the pressure sound wave composite probe rod (43); the cylinder body of the double-acting cylinder (44) is fixedly connected to the inner wall of the tungsten carbide alloy bushing The inner wall of the tungsten carbide alloy bushing is provided with a docking hole (45), one end of which extends to the upper end of the hammer body (3), a spring (46) is arranged on the periphery of the upper end of the docking hole (45), a bellows is sleeved on the surface of the spring (46), flanges are arranged on the upper and lower ends of the spring (46), the lower flange of the spring (46) is fixedly connected to the upper end of the hammer body (3), the upper outer surface and the lower outer surface of the bellows are fixedly connected to the inner wall of the upper flange and the inner wall of the lower flange of the spring (46), respectively, and the air inlet pipe and the air outlet pipe of the double-acting cylinder (44) extend to the outer side of the hammer body (3) through the docking hole (45).

4. The device for real-time acquisition of multiple parameters of pile holes in the process of pile foundation drilling according to claim 3, characterized in that: A piezoresistive force sensor is arranged at the lower end of the pressure-sound wave composite probe (43).

5. The device for real-time acquisition of multiple parameters of pile holes in the process of pile foundation drilling according to claim 4, characterized in that: The detection mechanism (8) comprises an annular groove (80) provided at the bottom end of the hammer body (3), the inner wall of the annular groove (80) is provided with a mounting groove in an annular array, the upper end of the hammer body (3) is fixedly connected with an annular water inlet pipe (81), the surface array of the water inlet pipe (81) is provided with an external interface, one third of the pipe body of the water inlet pipe (81) is embedded in the body of the hammer body (3), the upper end of the large-diameter cylinder of the hammer body (3) is provided with a water inlet pipe (82), each of the connecting pieces (6) is embedded with a connecting pipe (83), half of the pipe body of the connecting pipe (83) is embedded in the piece body of the connecting piece (6), and the inner walls at both ends of each of the connecting pipes (83) are fixedly connected with the inner wall of the water inlet pipe (81) and the inner wall of the water inlet pipe (82) respectively.

6. The device for real-time acquisition of multiple parameters of pile holes in the process of pile foundation drilling according to claim 5, characterized in that: The cylindrical annular array with a large diameter of the hammer body (3) is provided with a water outlet hole (84), the water outlet hole (84) is in an "L" shape, and the inner wall of the lower end of the water outlet hole (84) is provided with a drainage block (85), the upper inner wall of each water outlet hole (84) is fixedly connected to the inner wall of the second water inlet pipe (82), and the lower inner wall of the water outlet hole (84) is fixedly connected to the inner wall of the installation groove, and the inner wall of each installation groove is provided with a laser sensor (86), and the outer surface of each laser sensor (86) is wrapped with a silicone sleeve.

7. The device for real-time acquisition of multiple parameters of pile holes in the process of pile foundation drilling according to claim 6, characterized in that: The inclined surface of the drainage block (85) and the laser emitting surface of the laser sensor (86) form an angle of 30 degrees.

8. The device for real-time acquisition of multiple parameters of pile holes in the process of pile foundation drilling according to claim 7, characterized in that: An inertial measurement unit is provided at the upper end of the hammer body (3), and a connection terminal of the inertial measurement unit is connected to a control system of a hydraulic push rod (21) of the fine adjustment mechanism (2) via a data line.

9. The device for real-time acquisition of multiple parameters of pile holes in the process of pile foundation drilling according to claim 8, characterized in that: The rigid base (1) has an internally integrated multi-channel data acquisition module, including a wireless transmission unit and a hybrid power supply system. The wireless transmission unit adopts a high-speed, low-latency 5G communication technology dedicated wireless transmission protocol. The hybrid power supply system is composed of a rechargeable lithium battery pack and an external power supply interface.

10. The device for real-time acquisition of multiple parameters of pile holes in the process of pile foundation drilling according to claim 9, characterized in that: A spring damper (87) is provided at the upper end of each laser sensor (86), and the outer surface of the spring damper (87) is fixedly connected to the inner wall of the installation groove.

Images