A multi-functional drilling rig integrating drilling, pile moving, and pile driving, and its usage method.

Abstract

The purpose of this invention is to provide a multi-functional drilling rig integrating drilling, pile moving, and pile driving, and its usage method. It mainly includes a moving device, a pilot-drilling rig, and a mechanical gripper device. This equipment offers advantages such as simple operation and strong adaptability while ensuring construction quality. Its key feature is that the pilot-drilling rig drills a hole at a designated pile location. If the weight of the multi-functional drilling rig is insufficient to withstand the soil reaction force, counterweights can be installed in the counterweight compartment to increase the equipment's weight. The mechanical gripper picks up a precast soil pile and transports it to the designated pile location. The mechanical gripper has multiple movement modes to adapt to complex construction environments. Then, the hydraulic device on the mechanical gripper presses the precast soil pile in until the entire section is driven in. Repeating the above process achieves the construction of the precast soil pile. This invention integrates pilot-drilling, pile moving, and pile driving, eliminating the need for construction personnel to coordinate multiple pieces of equipment, significantly improving construction efficiency and reducing costs. It efficiently realizes the transportation and driving of precast soil piles, resulting in significant social and economic benefits.

Description

Technical Field

[0001] This invention relates to the field of pile foundation construction machinery technology, specifically to a multi-functional drilling rig that integrates drilling, pile moving, and pile driving, and its usage method. Background Technology

[0002] The information disclosed in this background section is intended only to enhance understanding of the overall background of the invention and is not necessarily to be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art.

[0003] With the increasing scale of transportation projects such as highways and railways, the construction of these projects inevitably involves traversing areas with weak soil strata. To effectively reinforce soft soil foundations, engineers typically employ methods such as cement-mixing piles, high-pressure jet grouting piles, and CFG piles to form composite foundations. However, these traditional methods often suffer from difficulties in controlling construction quality and inconsistent pile quality. Against this backdrop, an innovative reinforcement method—modified waste soil precast piles—has emerged. These precast soil piles utilize waste soil generated during construction, incorporating different modifiers to alter its physical and mechanical properties, and are then precast using specialized equipment. A single pile section is typically 2–5 meters long. The standardized production of precast soil piles in factories facilitates quality control, ensuring the uniformity and reliability of the pile body. These piles also possess advantages such as strong adaptability and environmental friendliness, meeting the modern engineering requirements for high quality and low cost while promoting resource recycling and embodying the concept of sustainable development.

[0004] However, the current construction process of precast soil piles is similar to that of traditional precast piles. The separation of most construction transportation and pile driving equipment often leads to low construction efficiency and requires coordination of multiple construction personnel, which increases construction costs. At the same time, traditional pile driving equipment is bulky and unsuitable for the construction of short piles such as precast soil piles, and the clamping plate has a short movement distance, resulting in low construction efficiency. Summary of the Invention

[0005] In view of the shortcomings of existing technologies, the purpose of this invention is to propose a multi-functional drilling rig that integrates drilling, pile moving, and pile driving, and its usage method, while ensuring the efficiency and quality of precast soil pile construction.

[0006] Another objective of this invention is to provide a method for using an integrated drilling-pile-driving multi-functional drilling rig.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] In a first aspect, the present invention discloses an integrated multi-functional drilling rig for drilling, pile moving, and pile driving, comprising a moving device, a pilot-drilling device, and a mechanical gripper device; the pilot-drilling device is installed at one end of the moving device, and the mechanical gripper device is installed at the other end; the mechanical gripper device includes a front gripper cylinder, a gripper rotating shaft, a telescopic frame, a rear gripper cylinder, a mechanical gripper, a clamping plate, a rotating disk, a first drive device, a second drive device, and a fixed frame; the front gripper cylinder and the gripper rotating shaft are mounted on the moving device, the end of the gripper rotating shaft is hinged to the side of the fixed frame, and the front gripper cylinder is inclined. The drive frame is tilted at a certain angle along the end of the grab's rotating shaft; a telescopic frame is installed on the frame, and the telescopic frame can move up and down under the drive of the first drive device; the telescopic frame extends and retracts in a direction perpendicular to the frame; the telescopic frame is connected to a rotating disk, and a pair of mechanical claws are installed on the rotating disk, each mechanical claw being driven by a rear grab's hydraulic cylinder, and the pair of mechanical claws can be engaged together under the drive of two sets of rear grab's hydraulic cylinders; and a clamping plate is installed on the mechanical claw, and the clamping plate can move along the axis of the mechanical claw within the curved surface formed by the mechanical claw under the drive of the second drive device.

[0009] As a further technical solution, the mobile device is a tracked mobile device with a rotating base that can rotate in a horizontal plane. The drilling rig and the mechanical claw are mounted on the rotating base.

[0010] As a further technical solution, the rotating base is also provided with a counterweight compartment, and a counterweight is installed in the counterweight compartment.

[0011] As a further technical solution, the first driving device is a sprocket and chain driving device, which is installed in a fixed frame.

[0012] As a further technical solution, the mechanical claw is semi-cylindrical.

[0013] As a further technical solution, an anti-slip pad is also provided on the inner wall of the clamping plate.

[0014] As a further technical solution, the pre-drilling device includes a pre-drilling machine, a front arm, and a rear arm; the rear arm is hinged to the moving device and driven by a rear arm cylinder, the front arm is hinged to the rear arm and driven by a front arm cylinder, and the pre-drilling machine is mounted on the front arm.

[0015] As a further technical solution, the drilling rig is located in front of the cab, and the mechanical claw device is located behind the cab.

[0016] As a further technical solution, the outer surface of the clamping plate is flush with the surface of the mechanical claw and can move axially with the mechanical claw to realize the pressing of the precast soil pile.

[0017] The aforementioned integrated drilling-pile-driving multi-functional drilling rig is mobile via tracks, enabling construction in various complex terrains. By installing a counterweight compartment on the vehicle body, counterweights can be installed as needed to ensure smooth pre-drilling and pile driving. The pre-drilling rig guides the drilling of the pile foundation, ensuring its verticality and construction quality. The boom and arm control the orientation of the pre-drilling rig, facilitating pile positioning. A mechanical claw moves the precast soil piles. The movement of the mechanical claw is controlled by hydraulic, rotating, and lifting devices mounted at its bottom, allowing for flexible movement and adaptability to various construction environments. The rotating device at the bottom of the mechanical claw can adjust it from horizontal to vertical. An internal static pressure device moves along the claw's axial direction, enabling integrated precast soil pile pre-drilling, movement, and driving, improving construction efficiency and reducing costs.

[0018] Secondly, the present invention provides a method for using an integrated multi-functional drilling rig that combines drilling, pile moving, and pile driving, comprising the following steps:

[0019] Step 1: Operate the mobile device and control the pilot drilling machine to align with the designated pile position. The pilot drilling machine will start drilling. If the soil is hard during drilling and the weight of the multi-functional drilling machine is insufficient to resist the soil reaction force, a counterweight block will be installed on the mobile device.

[0020] After the pilot hole drilling in step 2 is completed, the multi-functional drilling rig is moved to the storage location of the precast soil piles by operating the moving device.

[0021] Step 3: Use the front grab cylinder, telescopic frame, and rotating sprocket on the mechanical claw device to adjust the position of the mechanical claw so that it is aligned with the precast soil pile. When the multi-functional drilling rig moves forward or the telescopic frame extends, control the rear grab cylinder to extend and grab the precast soil pile.

[0022] Step 4: Move the precast soil pile to the designated location and use a rotating disc to make the precast soil pile vertical and aligned with the pilot hole;

[0023] Step 5: Press the pile foundation downwards using the mechanical claw device. If the weight of the multi-functional drilling rig is insufficient to resist the soil reaction force during the pile pressing process, install a counterweight block in the counterweight block chamber. If the pile pressing is not completed when the clamping plate moves to the bottom, the mechanical claw can be loosened slightly, and the clamping plate can be tightened again after moving up to continue pressing the pile until the precast soil pile section is pressed.

[0024] Step 6: Apply adhesive to the top of the precast soil pile and repeat steps (4) to (5) until the pile is constructed to the designed depth.

[0025] The beneficial effects of this invention are as follows:

[0026] (1) This invention integrates borehole drilling, pile moving, and pile driving into one unit, breaking through the limitations of traditional construction modes. Through integrated design, construction personnel do not need to coordinate multiple equipment. Under the premise of ensuring construction quality, it significantly improves construction efficiency and reduces costs, resulting in good social and economic benefits. Furthermore, this invention utilizes the front grabber cylinder, grabber rotating shaft, telescopic frame, rear grabber cylinder, rotating disk, and first drive device to control the mechanical claw in all directions, enabling the mechanical claw to achieve multiple movement modes such as forward and backward, up and down, and rotation. It is simple to operate and easy to grasp and position precast soil piles. The second drive device of this invention is set inside the mechanical claw. The second drive device can drive the clamping plate to move along the axis of the mechanical claw. After the precast soil pile is transported to the designated position, pile driving can be carried out immediately, improving construction efficiency and reducing construction costs.

[0027] (2) The mobile device of the present invention is equipped with tracks and a counterweight compartment. The tracks enable the multi-functional drilling rig to adapt to more complex construction environments. The weight of the equipment can be flexibly adjusted through the counterweight compartment to avoid the equipment pulling the counterweight, thus saving equipment energy consumption and ensuring the smooth progress of construction. Attached Figure Description

[0028] Figure 1 This is a front view of the multi-functional drilling rig integrating drilling, pile moving, and pile driving according to the present invention;

[0029] Figure 2 This is a side view of the multi-functional drilling rig integrating drilling, pile moving, and pile driving according to the present invention;

[0030] Figure 3 This is a vertical schematic diagram of the multifunctional drilling rig mechanical claw of the present invention;

[0031] Figure 4 This is a schematic diagram of the pre-hole drilling and anchoring construction of the multifunctional drilling rig of the present invention;

[0032] Figure 5 This is a schematic diagram of the multi-functional drilling rig pile driving construction of the present invention;

[0033] Figure 6 This is a schematic diagram of the mechanical claw structure of the present invention;

[0034] Figure 7 This is a construction flow chart of the multi-functional drilling rig integrating drilling, pile moving, and pile driving according to the present invention.

[0035] The components are as follows: 1. Pre-drilling rig; 2. Forward boom; 3. Rear boom; 4. Rear boom cylinder; 5. Cab; 6. Drive wheel; 7. Track; 8. Driven wheel; 9. Rotating base; 10. Front grab cylinder; 11. Grab rotating shaft; 12. Telescopic frame; 13. Rear grab cylinder; 14. Mechanical claw; 15. Clamping plate; 16. Rotating disc; 17. Rotating sprocket; 18. Chain; 19. Fixing frame; 20. Ground; 21. Pre-drill hole; 22. Precast soil pile; 23. Fixing rod; 24. Counterweight compartment; 25. Counterweight block. Detailed Implementation

[0036] The present invention will be further described in conjunction with the embodiments. It should be noted that the following description is only for explaining the present invention and does not limit its content.

[0037] To address the construction challenges of precast soil piles, this embodiment provides an integrated multi-functional drilling rig for drilling, pile moving, and pile driving, along with its usage method. This invention combines borehole preparation, pile moving, and pile driving into one unit, overcoming the limitations of traditional construction methods. Through its integrated design, construction personnel no longer need to coordinate multiple pieces of equipment, significantly improving construction efficiency and reducing labor costs. This equipment not only accurately prepares boreholes, ensuring high-quality construction of precast soil piles, but also efficiently completes the movement and driving of precast soil piles, resulting in significant economic and social benefits.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, this embodiment provides a multi-functional drilling rig that integrates drilling, pile moving, and pile driving. Specifically, it includes a moving device, a pilot hole drilling device, and a mechanical claw device. The pilot hole drilling device and the mechanical claw device are both installed on the moving device and can move with the moving device.

[0039] The pilot hole drilling device mainly includes a pilot hole drilling machine 1, a front arm 2, a rear arm 3, and a rear arm cylinder 4. The rear arm 3 is hinged to the moving device and driven by the rear arm cylinder 4. The front arm 2 is hinged to the rear arm 3 and driven by the front arm cylinder. The front arm cylinder is not shown in the figure. The pilot hole drilling machine 1 is mounted on the front arm 2.

[0040] The mobile device mainly includes a cab 5, a drive wheel 6, a track 7, a driven wheel 8, a rotating base 9, a fixed rod 23, and a counterweight compartment 24. The track 7 is installed at the bottom of the rotating base 9 and is driven by the drive wheel 6 and the driven wheel 8. The cab 5 is installed on the rotating base 9, and a counterweight compartment 24 is set on one side of the cab 5. A fixed rod 23 is set inside the counterweight compartment 24, and the counterweight compartment 24 is used to set counterweights 25.

[0041] The mechanical gripper device mainly includes a front gripper cylinder 10, a gripper rotating shaft 11, a telescopic frame 12, a rear gripper cylinder 13, a mechanical gripper 14, a clamping plate 15, a rotating disk 16, a rotating sprocket 17, a chain 18, and a fixed frame 19. The front gripper cylinder 10 and the gripper rotating shaft 11 are mounted on a moving device. The end of the gripper rotating shaft 11 is hinged to the side of the fixed frame 19. The front gripper cylinder 10 is inclined, driving the fixed frame 19 to tilt at a certain angle along the end of the gripper rotating shaft 11. The telescopic frame 12 is mounted on the fixed frame 19, and the telescopic frame can move up and down under the drive of the rotating sprocket 17 and the chain 18. The telescopic frame 12 extends and retracts in a direction perpendicular to the fixed frame 19. Figure 1 As shown, the telescopic frame 12 can extend and retract in the horizontal direction; the telescopic frame 12 is connected to the rotating disk 16, and a pair of mechanical claws 14 are provided on the rotating disk 16. Each mechanical claw 14 is driven by a rear grabber cylinder 13. Under the drive of the two sets of rear grabber cylinders 13, the pair of mechanical claws 14 can be engaged together; and a clamping plate 15 is provided on the mechanical claw 14. The clamping plate 15 can move within the curved surface formed by the mechanical claw 14 under the drive of the driving device; the size of the mechanical claw is suitable for precast soil piles, and the clamping plate can make linear movements in the mechanical claw, with a large range of motion, high construction efficiency, and significant economic and social benefits.

[0042] Furthermore, an anti-slip pad is provided on the inner wall of the clamping plate 15, so that the clamping plate 15 can better grip the pile.

[0043] Furthermore, the aforementioned pair of mechanical claws 14 are symmetrically arranged on the rotating disk 16. Each mechanical claw 14 is semi-cylindrical, and the two mechanical claws 14 can be combined to form a cylinder. A clamping plate 15 and a cylinder for driving the clamping plate 15 to move are installed in the semi-cylindrical sidewall formed by the mechanical claws 14. The clamping plate 15 can move along the axis of the mechanical claws 14 under the drive of the hydraulic cylinder.

[0044] Furthermore, the aforementioned vertically arranged rotating sprockets 17 are mounted on a horizontal shaft inside the fixed frame 19. The rotating sprockets 17 are driven by a motor and connected vertically by a chain 18; thus, the chain moves vertically, thereby moving the telescopic frame 12 vertically. The vertical movement of the telescopic frame moves the rotating disk 16 and a pair of mechanical claws 14 vertically together.

[0045] Furthermore, the aforementioned rotating disk 16 is equipped with a drive device inside, which drives the rotating disk 16 to rotate.

[0046] Furthermore, in this embodiment, the telescopic frame 12 is a scissor-type telescopic bracket, mainly to adjust the distance between the mechanical claw 14 and the fixed frame 19.

[0047] Furthermore, the aforementioned pre-drilling rig and mechanical claw device are located on the front and rear sides of the mobile device, respectively, and can simultaneously perform three functions: pre-drilling, transportation, and pile driving.

[0048] Furthermore, the counterweight compartment is located on one side of the bottom of the cab, allowing for flexible adjustment of the equipment weight and avoiding unnecessary energy consumption.

[0049] Furthermore, the pilot hole drill is controlled by a rotating base and a rear wall hydraulic cylinder, allowing it to rotate and move freely up and down, making it suitable for various construction environments and facilitating hole location determination.

[0050] Furthermore, the aforementioned mechanical gripper device achieves changes in the angle of the mechanical gripper by adjusting the angle of the fixed frame, and realizes the up-and-down and back-and-forth movement of the mechanical gripper through the telescopic frame and rotating sprocket, with diverse movement modes and simple operation.

[0051] Furthermore, in this embodiment, the mechanical claw device and the mechanical claw itself are equipped with hydraulic equipment, and the clamping plate can move freely along the axis of the mechanical claw, giving the mechanical claw the function of pile pressing.

[0052] In this embodiment, the schematic diagram of the integrated drilling-pile-driving multi-functional drilling rig is shown below. Figure 1 As shown, the multi-functional drilling rig is operated from the cab 5 to the designated position. The rear wall cylinder 4 extends, and the drilling rig is aligned to begin drilling. If the weight of the multi-functional drilling rig cannot resist the reaction force, counterweights 25 are installed in the counterweight compartment 24 to increase the weight of the equipment. After drilling is completed, the multi-functional drilling rig is driven to the precast soil pile storage location. The front grab cylinder 10, telescopic frame 12, and rear grab cylinder 13 are controlled from the cab 5 to align the mechanical claw 14 with the precast soil pile 22. The telescopic frame 12 extends, and the rear grab cylinder 13 extends simultaneously to grab the precast soil pile. 22. Then drive the multi-functional drilling rig to the pile driving location, operate the rotating base 9 and rotating disk 16 to make the mechanical grab 14 vertical, and align it with the pilot hole 21 to start pile driving. The clamping plate 15 moves downward to the bottom of the mechanical grab. If the pile driving is not completed, the rear grab cylinder 13 retracts, slightly loosens the mechanical grab 14 and moves the clamping plate 15 up a certain distance, and then continues to grip and drive the pile. Repeat the above steps until the pile section is driven. Apply adhesive to the top of the driven precast soil pile, grab another precast soil pile and continue to drive it until the construction is completed.

[0053] The specific usage method of the aforementioned integrated drilling-pile-driving multi-functional drilling rig includes the following steps:

[0054] (1) Level the site and bring in a multi-functional drilling rig that integrates drilling, pile moving and pile driving;

[0055] (2) Operate the cab 5, control the pilot drilling machine to align with the designated pile position, the pilot drilling machine 1 starts drilling, the rear wall cylinder 4 extends during the drilling process, the front arm 2 rotates upward until it has advanced 1 to 2 meters. If the soil is hard during the drilling process and the weight of the multi-functional drilling machine is insufficient to resist the soil reaction force, then install the counterweight block 25 in the counterweight block compartment 24.

[0056] (3) After the pilot hole drilling is completed, the operator in cab 5 drives the multi-functional drilling machine to the precast soil pile storage area;

[0057] (4) Adjust the position of the mechanical claw using the front grab cylinder 10, telescopic frame 12 and rotating sprocket 17 on the mechanical claw device so that it is aligned with the precast soil pile. When the multi-functional drilling rig moves forward or the telescopic frame 12 extends, control the rear grab cylinder 13 to extend and grab the precast soil pile 22.

[0058] (5) Transport the precast soil pile 22 to the designated position, and use the rotating plate 16 to make the precast soil pile vertical and aligned with the pilot hole 24;

[0059] (6) The hydraulic equipment of the mechanical claw device is used to press the pile foundation downward. If the weight of the multi-functional drilling machine is insufficient to resist the soil reaction force during the pile pressing process, a counterweight block 25 is installed in the counterweight block chamber 24. If the pile pressing is not completed when the clamping plate 15 moves to the bottom, the mechanical claw 14 can be loosened slightly. After the clamping plate 15 moves up, it can be tightened again to continue pressing until the precast soil pile 22 of this section is pressed.

[0060] (7) Apply adhesive to the top of the precast soil pile and repeat steps (3) to (6) until the pile is constructed to the design depth.

[0061] (8) Construction completed, equipment removed from site.

[0062] This embodiment provides an integrated multi-functional drilling rig for drilling, pile moving, and pile driving, and its usage method. This invention integrates borehole preparation, pile moving, and pile driving into one unit, breaking through the limitations of traditional construction methods. Through integrated design, construction personnel do not need to coordinate multiple pieces of equipment, significantly improving construction efficiency and reducing labor costs. The mechanical gripper is the right size for precast soil piles, and the clamping plate can move linearly within the gripper, allowing for a large range of motion and high construction efficiency, resulting in significant economic and social benefits.

[0063] It should be further noted that the above embodiments are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of them. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. Although the specific embodiments of the present invention have been described above, they are not intended to limit the protection scope of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A multi-functional drilling rig integrating drilling, pile moving, and pile driving, characterized in that: The device includes a moving unit, a pilot-hole drilling rig, and a mechanical gripper. The pilot-hole drilling rig is located at one end of the moving unit, and the mechanical gripper is located at the other end. The mechanical gripper includes a front gripper cylinder, a gripper rotating shaft, a telescopic frame, a rear gripper cylinder, a mechanical gripper, a clamping plate, a rotating disk, a first drive device, a second drive device, and a fixed frame. The front gripper cylinder and the gripper rotating shaft are mounted on the moving unit. The end of the gripper rotating shaft is hinged to the side of the fixed frame. The front gripper cylinder is inclined, driving the fixed frame along the end of the gripper rotating shaft. The structure tilts at a certain angle; a telescopic frame is installed on the fixed frame, and the telescopic frame can move up and down under the drive of the first drive device; the telescopic frame extends and retracts along a direction perpendicular to the fixed frame; the telescopic frame is connected to a rotating disk, and a pair of mechanical claws are installed on the rotating disk, each mechanical claw being driven by a rear gripper cylinder, and under the drive of two sets of rear gripper cylinders, the pair of mechanical claws can be engaged together; and a clamping plate is installed on the mechanical claw, and the clamping plate can move along the axis of the mechanical claw within the curved surface formed by the mechanical claw under the drive of the second drive device.

2. The integrated drilling-pile-driving multi-functional drilling rig as described in claim 1, characterized in that: The mobile device is a tracked mobile device with a rotating base that can rotate in a horizontal plane. The drilling rig and the mechanical claw are mounted on the rotating base.

3. The integrated drilling-pile-driving multi-functional drilling rig as described in claim 1, characterized in that: The rotating base is also equipped with a counterweight compartment, and a counterweight is placed inside the counterweight compartment.

4. The integrated drilling-pile-driving multi-functional drilling rig as described in claim 1, characterized in that: The first driving device is a sprocket and chain driving device, which is installed in a fixed frame.

5. The integrated drilling-pile-driving multi-functional drilling rig as described in claim 1, characterized in that: The mechanical claw is semi-cylindrical.

6. The integrated drilling-pile-driving multi-functional drilling rig as described in claim 1, characterized in that: An anti-slip pad is also provided on the inner wall of the clamping plate.

7. The integrated drilling-pile-driving multi-functional drilling rig as described in claim 1, characterized in that: The aforementioned pilot hole drilling device includes a pilot hole drilling machine, a front arm, and a rear arm; the rear arm is hinged to the moving device and driven by a rear arm cylinder, the front arm is hinged to the rear arm and driven by a front arm cylinder, and the pilot hole drilling machine is mounted on the front arm.

8. The integrated drilling-pile-driving multi-functional drilling rig as described in claim 1, characterized in that: The aforementioned borehole drilling rig is located in front of the cab, and the mechanical claw device is located behind the cab.

9. The integrated drilling-pile-driving multi-functional drilling rig as described in claim 1, characterized in that: The outer surface of the clamping plate is flush with the surface of the mechanical claw and can move axially with the mechanical claw to realize the pressing of the precast soil pile.

10. The method of using the integrated drilling-pile-driving multi-functional drilling rig as described in any one of claims 1-9, characterized in that, as follows: Step 1: Operate the mobile device and control the pilot drilling machine to align with the designated pile position. The pilot drilling machine will start drilling. If the soil is hard during drilling and the weight of the multi-functional drilling machine is insufficient to resist the soil reaction force, a counterweight block will be installed on the mobile device. After the pilot hole drilling in step 2 is completed, the multi-functional drilling rig is moved to the storage location of the precast soil piles by operating the moving device. Step 3: Use the front grab cylinder, telescopic frame, and rotating sprocket on the mechanical claw device to adjust the position of the mechanical claw so that it is aligned with the precast soil pile. When the multi-functional drilling rig moves forward or the telescopic frame extends, control the rear grab cylinder to extend and grab the precast soil pile. Step 4: Move the precast soil pile to the designated location and use a rotating disc to make the precast soil pile vertical and aligned with the pilot hole; Step 5: Press the pile foundation downwards using the mechanical claw device. If the weight of the multi-functional drilling rig is insufficient to resist the soil reaction force during the pile pressing process, install a counterweight block in the counterweight block chamber. If the pile pressing is not completed when the clamping plate moves to the bottom, the mechanical claw can be loosened slightly, and the clamping plate can be tightened again after moving up to continue pressing the pile until the precast soil pile section is pressed. Step 6: Apply adhesive to the top of the precast soil pile and repeat steps (4) to (5) until the pile is constructed to the designed depth.

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