Drilling-pile moving-pile pressing integrated multifunctional drilling machine and using method thereof

Abstract

The invention aims to provide a drilling-pile moving-pile pressing integrated multifunctional drilling machine and a using method thereof. The drilling machine mainly comprises a moving device, a hole guiding drilling machine body and a mechanical gripper device. The equipment has the advantages of simplicity in operation, high adaptability and the like on the premise of ensuring the construction quality. The method is characterized in that hole guiding is carried out at a designated pile position through a hole guiding drilling machine, and if the weight of a multifunctional drilling machine is not enough to resist the counterforce of a soil body, the equipment weight can be increased by installing a balancing weight in a balancing weight bin; the prefabricated soil pile is grabbed through the mechanical claw, the prefabricated soil pile is conveyed to a designated pile position, and the mechanical claw has multiple movement modes and can adapt to the complex construction environment; and then the prefabricated soil pile is pressed into the mechanical claw through hydraulic equipment on the mechanical claw until the prefabricated soil pile is completely pressed into the mechanical claw, and construction of the prefabricated soil pile can be achieved by repeating the process. The device integrates hole guiding, pile moving and pile pressing, constructors do not need to additionally coordinate various devices, the construction efficiency is remarkably improved, the cost is reduced, conveying and pressing-in of the prefabricated soil piles are efficiently achieved, and the device has remarkable social and economic benefits.

Description

Technical Field

[0001] The present invention relates to the technical field of pile foundation construction machinery, and in particular to a multifunctional drilling rig integrating drilling, pile moving and pile pressing and a use method thereof. Background Art

[0002] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention, and should not necessarily be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art.

[0003] As transportation projects such as highways and railways become increasingly large, they inevitably have to pass through soft strata during their construction. In order to effectively reinforce soft soil foundations, engineers usually use methods such as setting columnar reinforcement bodies in soft soil foundations to form composite foundations, such as cement mixing piles, high-pressure rotary jet piles, CFG piles, etc. However, the above traditional methods often have problems such as difficult to control construction quality and discrete pile quality. Against this background, an innovative reinforcement method-modified waste soil prefabricated piles came into being. The prefabricated soil piles are made by mixing different modifiers with waste soil generated during construction to change its physical and mechanical properties, and then prefabricated through specific equipment. The length of a single pile is generally 2 to 5 meters. Prefabricated soil piles are standardized in the factory, which is convenient for quality supervision and ensures the uniformity and reliability of the pile body. The piles also have the advantages of strong adaptability and green environmental protection. They not only meet the requirements of modern engineering for high quality and low cost, but also contribute to the recycling of resources, reflecting the concept of sustainable development.

[0004] However, the construction process of precast earth piles is similar to that of traditional precast piles. The separation of most construction transportation and piling equipment often leads to low construction efficiency and requires coordination among multiple construction personnel, which increases construction costs. At the same time, traditional pile driving equipment is large in size and is not suitable for the construction of short piles such as precast earth piles. The movement distance of the clamping plate is short, resulting in low construction efficiency. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a multifunctional drilling rig integrating drilling, pile moving and pile pressing and a method of using the same while ensuring the construction efficiency and quality of prefabricated soil piles.

[0006] Another object of the present invention is to provide a method for using a multifunctional drilling rig that integrates drilling, pile moving and pile pressing.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] In the first aspect, the present invention discloses a multifunctional drilling rig integrating drilling, pile moving and pile pressing, including a mobile device, a hole-guiding drilling device and a mechanical claw device; the hole-guiding drilling device is arranged at one end of the mobile device, and the mechanical claw device is arranged at the other end; the mechanical claw device comprises a front gripper cylinder, a support shaft, a telescopic frame, a rear gripper cylinder, a mechanical claw, a clamping plate, a rotating disk, a first drive device, a second drive device and a fixed frame, the front gripper cylinder and the support shaft are installed on the mobile device, the end of the support shaft is hinged to the side of the fixed frame, the front gripper cylinder is arranged tilted, and the drive The fixed frame is tilted at a certain angle along the end of the supporting shaft; a telescopic frame is arranged on the fixed frame, and the telescopic frame can move up and down under the drive of the first driving device; the telescopic frame is telescoped in a direction perpendicular to the fixed frame; the telescopic frame is connected to the rotating disk, and a pair of mechanical claws are arranged on the rotating disk, each mechanical claw is driven by a rear gripper cylinder, and under the drive of two groups of rear gripper cylinders, the pair of mechanical claws can be buckled together; and a clamping plate is arranged on the mechanical claw, and the clamping plate can move along the axial direction of the mechanical claw in the curved surface formed by the mechanical claw under the drive of the second driving device.

[0009] As a further technical solution, the mobile device is a crawler-type mobile device, on which a rotating base that can rotate in a horizontal plane is arranged, and the hole-guiding drilling device and the mechanical claw device are installed on the rotating base.

[0010] As a further technical solution, a counterweight block bin is also provided on the rotating base, and a counterweight block is provided in the counterweight block bin.

[0011] As a further technical solution, the first driving device is a sprocket chain driving device, and the sprocket chain driving device 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 hole-guiding drilling device includes a hole-guiding drilling rig, a forearm, and a rear arm; the rear arm is hinged to the moving device and driven by the rear arm cylinder, the forearm is hinged to the rear arm and driven by the forearm cylinder, and the hole-guiding drilling rig is arranged on the forearm.

[0015] As a further technical solution, the hole-guiding drilling device is arranged in front of the cab, and the mechanical claw device is arranged 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 achieve the pressing of the prefabricated soil pile.

[0017] The above-mentioned integrated multifunctional drilling rig for drilling, pile moving and pile pressing is moved by crawlers and can be used for construction in various complex terrains; by installing a counterweight block bin on the vehicle body, counterweight blocks can be installed as needed to ensure the smooth progress of hole guiding and pile pressing; the pile foundation is bored by the hole guiding rig to ensure the verticality of the pile foundation and the construction quality; the orientation of the hole guiding rig is controlled by the boom and the forearm to facilitate the positioning of the foundation piles; the precast earth piles are moved by the mechanical claw; the movement of the mechanical claw is controlled by the hydraulic equipment, rotating equipment and lifting equipment installed at the bottom of the mechanical claw, so that the mechanical claw can move flexibly and is suitable for a variety of construction environments; the mechanical claw can be adjusted from horizontal to vertical by the rotating equipment installed at the bottom of the mechanical claw, and a static pressure device is installed inside the mechanical claw, which can move along the axial direction of the mechanical claw to realize the integrated construction of hole guiding, moving and pressing of precast earth piles, thereby improving construction efficiency and reducing construction costs.

[0018] In a second aspect, the present invention provides a method for using a multifunctional drilling rig integrating drilling, pile moving and pile pressing, comprising the following steps:

[0019] Step 1: Control the mobile device to align the guide hole drilling device with the designated pile position, and the guide hole drilling device starts drilling. If the soil is hard during the drilling process and the weight of the multifunctional drilling rig is not enough to withstand the reaction force of the soil, a counterweight block is installed on the mobile device;

[0020] Step 2 After the lead hole drilling is completed, the mobile device is controlled to drive the multifunctional drilling rig to the storage place of the prefabricated soil piles;

[0021] Step 3: Use the front gripper oil cylinder, telescopic frame, and rotating sprocket on the mechanical gripper device to adjust the position of the mechanical gripper so that it is aligned with the prefabricated soil pile. When the multifunctional drilling rig moves forward or the telescopic frame is extended, the rear gripper oil cylinder is controlled to extend to grab the prefabricated soil pile.

[0022] Step 4: transport the prefabricated soil pile to the designated location, and make the prefabricated soil pile vertical and aligned with the guide hole by rotating the disk;

[0023] Step 5: Press the pile foundation downwards through the mechanical claw device. If the weight of the multifunctional drilling rig is not enough to withstand the soil reaction force during the pile pressing process, install the counterweight block in the counterweight block bin. If the pile pressing is not completed when the clamping plate runs to the bottom, loosen the mechanical claw slightly, and tighten it after the clamping plate moves up, and continue to press the pile until the prefabricated soil pile of this section is completed.

[0024] Step 6: Apply a cementing material to the top of the pressed prefabricated soil pile, and repeat steps (4) to (5) until the foundation pile is constructed to the designed depth.

[0025] The beneficial effects of the present invention are:

[0026] (1) The present invention integrates hole drawing, pile moving and pile pressing, breaking through the limitations of traditional construction modes. Through integrated design, construction personnel do not need to coordinate multiple equipments. Under the premise of ensuring construction quality, the construction efficiency is significantly improved and the cost is reduced, which has good social and economic benefits. In addition, the present invention uses the front gripper oil cylinder, support shaft, telescopic frame, rear gripper oil cylinder, rotating disk, and first driving device to control the mechanical claw in all directions, so that the mechanical claw can realize multiple movement modes such as front and back, up and down, and rotation. The operation is simple and easy to realize the grasping and positioning of prefabricated soil piles. The second driving device of the present invention is arranged inside the mechanical claw, and the second driving device can drive the clamping plate to move along the axial direction of the mechanical claw. After the prefabricated soil pile is transported to the designated position, the pile pressing construction can be carried out immediately, thereby improving construction efficiency and reducing construction costs.

[0027] (2) The mobile device of the present invention is provided with tracks and a counterweight bin. The tracks can enable the multifunctional drilling rig to adapt to a more complex construction environment. The weight of the equipment can be flexibly adjusted through the counterweight bin to avoid the equipment pulling the counterweight to move. This saves energy consumption of the equipment and ensures the smooth progress of the construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front view of the multifunctional drilling rig integrating drilling, pile moving and pile pressing of the present invention;

[0029] Figure 2 It is a side view of the multifunctional drilling rig integrating drilling, pile moving and pile pressing of the present invention;

[0030] Figure 3 It 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 hole-guiding and anchoring construction of the multifunctional drilling rig of the present invention;

[0032] Figure 5 This is a schematic diagram of the multifunctional drilling rig pile pressing construction of the present invention;

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

[0034] Figure 7 The present invention is a construction flow chart of the multifunctional drilling rig integrating drilling, pile moving and pile pressing.

[0035] Among them, 1. Drilling machine; 2. Front arm; 3. Rear arm; 4. Rear arm cylinder; 5. Cab; 6. Driving 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 disk; 17. Rotating sprocket; 18. Chain; 19. Fixed frame; 20. Ground; 21. Drilling machine; 22. Precast soil pile; 23. Fixed rod; 24; Counterweight block bin; 25; Counterweight block. DETAILED DESCRIPTION

[0036] The present invention is 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 the content thereof.

[0037] In response to the construction problem of the prefabricated soil piles, this embodiment provides a multifunctional drilling rig that integrates drilling, pile moving and pile pressing and its use method. The invention integrates hole guiding, pile moving and pile pressing, breaking through the limitations of the traditional construction mode. Through the integrated design, construction personnel do not need to coordinate multiple equipment, which significantly improves construction efficiency and reduces labor costs. The equipment can not only accurately guide holes to ensure high-quality construction of prefabricated soil piles, but also efficiently complete the movement and pressing of prefabricated soil piles, with significant economic and social benefits.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, this embodiment provides a multifunctional drilling rig integrating drilling, pile moving and pile pressing, specifically, comprising a mobile device, a hole-guiding drilling rig device and a mechanical claw device, wherein the hole-guiding drilling rig device and the mechanical claw device are both installed on the mobile device and can be moved along with the mobile device;

[0039] The hole-guiding drilling device mainly comprises a hole-guiding drilling machine 1, a front arm 2, a rear arm 3, and a rear arm oil cylinder 4; the rear arm 3 is hinged to the moving device and driven by the rear arm oil cylinder 4, the front arm 2 is hinged to the rear arm 3 and driven by the front arm oil cylinder, the front arm oil cylinder is not shown in the figure, and the hole-guiding drilling machine 1 is arranged on the front arm 2;

[0040] The mobile device mainly includes a cab 5, a driving wheel 6, a crawler track 7, a driven wheel 8, a rotating base 9, a fixed rod 23, and a counterweight block bin 24; the crawler track 7 is installed at the bottom of the rotating base 9, and the crawler track 7 is driven by the driving wheel 6 and the driven wheel 8; the cab 5 is installed on the rotating base 9, and a counterweight block bin 24 is arranged on one side of the cab 5, and a fixed rod 23 is arranged in the counterweight block bin 24, and the counterweight block bin 24 is used to set the counterweight block 25;

[0041] The mechanical claw device mainly includes a front gripper cylinder 10, a support shaft 11, a telescopic frame 12, a rear gripper cylinder 13, a mechanical claw 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 support shaft 11 are installed on a mobile device, and the end of the support shaft 11 is hinged to the side of the fixed frame 19. The front gripper cylinder 10 is tilted to drive the fixed frame 19 to tilt at a certain angle along the end of the support shaft 11; the telescopic frame 12 is arranged 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 is telescoped in a direction perpendicular to the fixed frame 19, such as Figure 1 As shown, the telescopic frame 12 can be extended and retracted in the horizontal direction; the telescopic frame 12 is connected to the rotating disk 16, and a pair of mechanical claws 14 are arranged on the rotating disk 16, each mechanical claw 14 is driven by the rear grabber cylinder 13, and under the drive of the two groups of rear grabber cylinders 13, the pair of mechanical claws 14 can be buckled together; and a clamping plate 15 is arranged on the mechanical claw 14, and 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 prefabricated soil piles, and the clamping plate can make linear motion in the mechanical claw, with a large range of motion and high construction efficiency, and has significant economic and social benefits.

[0042] Furthermore, an anti-skid 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 pair of mechanical claws 14 are symmetrically arranged on the rotating disk 16, and each mechanical claw 14 is semi-cylindrical. When the two mechanical claws 14 are combined together, they can form a cylinder; a clamping plate 15 and a cylinder for driving the clamping plate 15 to move are installed in the semi-cylindrical side wall formed by the mechanical claws 14, and the clamping plate 15 can move along the axial direction of the mechanical claw 14 under the drive of the hydraulic cylinder.

[0044] Furthermore, the rotating sprocket 17 arranged up and down is installed on a horizontal axis arranged inside the fixed frame 19, and the rotating sprocket 17 is driven by a motor, and is connected up and down by the sprocket 17 chain 18; the chain moves up and down, and then drives the telescopic frame 12 to move up and down, and the telescopic frame moves up and down, driving the rotating disk 16 and a pair of mechanical claws 14 up and down together.

[0045] Furthermore, a driving device is disposed inside the rotating disk 16, and the driving device drives the rotating disk 16 to rotate.

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

[0047] Furthermore, the above-mentioned hole-guiding drill and mechanical claw device are respectively located on the front and rear sides of the mobile device, and can simultaneously realize the three functions of hole-guiding, transportation and pile pressing.

[0048] Furthermore, the counterweight bin is located on one side of the bottom of the cab, which can flexibly adjust the weight of the equipment and avoid unnecessary energy consumption.

[0049] Furthermore, the hole-guiding drill is controlled by a rotating base and a rear wall oil cylinder, so that the hole-guiding drill can rotate and move freely up and down, which can be applied to a variety of construction environments and is conducive to hole position determination.

[0050] Furthermore, the above-mentioned mechanical claw device realizes the change of the angle of the mechanical claw by adjusting the angle of the fixed frame, and realizes the up and down, front and back movement of the mechanical claw through the telescopic frame and the rotating sprocket. The movement modes are diverse and the operation is simple.

[0051] Furthermore, the mechanical claw device and the interior of the mechanical claw in this embodiment are provided with hydraulic equipment, and the clamping plate can move freely along the shaft of the mechanical claw, so that the mechanical claw has a pile pressing function.

[0052] In this embodiment, the structural diagram of the integrated multifunctional drilling rig for drilling, moving piles and pressing piles is as follows: Figure 1 As shown, the multifunctional drilling rig is controlled to the designated position through the cab 5, the rear wall cylinder 3 is extended, and the drilling rig is aligned to start drilling. If the weight of the multifunctional drilling rig cannot resist the drilling rig reaction force, the weight of the equipment is increased by installing a counterweight block 25 in the counterweight block bin 24. After the drilling is completed, the multifunctional drilling rig is driven to the storage place of the prefabricated soil piles, and the front grabbing machine cylinder 10, the telescopic frame 12, and the rear grabbing machine cylinder 13 are controlled through the operating room 5 to make the mechanical claw 14 align with the prefabricated soil pile 22. The telescopic frame 12 is extended and the rear grabbing machine cylinder 13 is extended at the same time to grab the prefabricated soil pile. 22, then drive the multifunctional drilling rig to the pile driving location, operate the rotating base 9 and the rotating disk 16 to make the mechanical grip 14 in a vertical state, and start pile driving after aligning it with the guide hole 21. The clamping plate 15 moves downward to the bottom of the mechanical grip. If the pile driving is not completed, the rear gripper cylinder 13 contracts, slightly loosens the mechanical grip 12, 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 driving of the section is completed, apply the cementing material on the top of the pressed precast soil pile, grab another section of the precast soil pile and continue to drive it in until the construction is completed.

[0053] The specific method of using the above-mentioned integrated multifunctional drilling rig for drilling, pile moving and pile pressing includes the following steps:

[0054] (1) Level the site and bring in a multifunctional drilling rig that integrates drilling, pile moving and pile pressing;

[0055] (2) Operate the cab 5 to control the drilling rig device to align with the designated pile position, and the drilling rig 1 starts drilling. During the drilling process, the rear wall cylinder 3 extends, and the front arm 2 rotates upward until it rotates 1 to 2 meters. If the soil is hard during the drilling process and the weight of the multifunctional drilling rig is not enough to withstand the reaction force of the soil, a counterweight 25 is installed in the counterweight bin 24;

[0056] (3) After the pilot hole drilling is completed, the operator controls the cab 5 to drive the multifunctional drilling rig to the storage area of ​​the prefabricated soil piles;

[0057] (4) The front gripper oil cylinder 13, telescopic frame 15, and rotating sprocket 20 on the mechanical gripper device are used to adjust the position of the mechanical gripper so that it is aligned with the prefabricated soil pile. When the multifunctional drilling rig moves forward or the telescopic frame 15 is extended, the rear gripper oil cylinder 16 is controlled to extend to grab the prefabricated soil pile 22;

[0058] (5) moving the prefabricated soil pile 22 to the designated location, and making the prefabricated soil pile vertical and aligned with the guide hole 24 by rotating the disk 19;

[0059] (6) The hydraulic equipment of the mechanical claw device is used to press the pile foundation downward. If the weight of the multifunctional drilling rig is not enough to withstand the reaction force of the soil during the pile pressing process, a counterweight block 25 is installed in the counterweight block bin 24. If the pile pressing is not completed when the clamping plate 18 moves to the bottom, the mechanical claw 17 can be slightly loosened, and the clamping plate 18 is moved up before being tightened and pressed in until the prefabricated soil pile 22 of this section is completed;

[0060] (7) Apply a cementing material to the top of the pressed precast soil pile and repeat steps (3) to (6) until the foundation pile is constructed to the designed depth;

[0061] (8) Construction is completed and equipment leaves the site.

[0062] The embodiment provides a drilling-pile moving-pile pressing integrated multifunctional drilling rig and its use method, which integrates hole guiding, pile moving and pile pressing, breaking through the limitations of traditional construction mode. Through the integrated design, construction personnel do not need to coordinate multiple equipment, which significantly improves construction efficiency and reduces labor costs. The size of the mechanical claw is suitable for prefabricated soil piles, and the clamping plate can perform linear movement in the mechanical claw, with a large range of movement and high construction efficiency, which has significant economic and social benefits.

[0063] It should be further explained that the above embodiments are only 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 above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments, or perform equivalent replacements on parts thereof. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention. Although the above describes the specific implementation methods of the present invention, it is not a limitation on 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 labor on the basis of the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A multifunctional drilling rig integrating drilling, pile moving and pile pressing, characterized in that: The invention comprises a moving device, a hole-guiding drilling device and a mechanical claw device; the hole-guiding drilling device is arranged at one end of the moving device, and the mechanical claw device is arranged at the other end; the mechanical claw device comprises a front gripper oil cylinder, a support shaft, a telescopic frame, a rear gripper oil cylinder, a mechanical claw, a clamping plate, a rotating disk, a first driving device, a second driving device and a fixed frame, the front gripper oil cylinder and the support shaft are installed on the moving device, the end of the support shaft is hinged with the side of the fixed frame, the front gripper oil cylinder is arranged obliquely, and the fixed frame is driven to tilt at a certain angle along the end of the support shaft; a telescopic frame is arranged on the fixed frame, and the telescopic frame can move up and down under the drive of the first driving device; the telescopic frame is telescoped in a direction perpendicular to the fixed frame; the telescopic frame is connected to the rotating disk, and a pair of mechanical claws are arranged on the rotating disk, each mechanical claw is driven by the rear gripper oil cylinder, and under the drive of the two groups of rear gripper oil cylinders, the pair of mechanical claws can be buckled together; and a clamping plate is arranged on the mechanical claw, and the clamping plate can move along the axial direction of the mechanical claw in the curved surface formed by the mechanical claw under the drive of the second driving device.

2. The multifunctional integrated drilling rig for drilling, pile moving and pile pressing as claimed in claim 1, characterized in that: The mobile device is a crawler-type mobile device, on which a rotating base capable of rotating in a horizontal plane is arranged, and the hole-guiding drilling device and the mechanical claw device are installed on the rotating base.

3. The multifunctional integrated drilling rig for drilling, pile moving and pile pressing as claimed in claim 1, characterized in that: The rotating base is also provided with a counterweight block bin, in which a counterweight block is arranged.

4. The multifunctional integrated drilling rig for drilling, pile moving and pile pressing as claimed in claim 1, characterized in that: The first driving device is a sprocket chain driving device, and the sprocket chain driving device is installed in a fixing frame.

5. The multifunctional integrated drilling rig for drilling, pile moving and pile pressing according to claim 1, characterized in that: The mechanical claw is semi-cylindrical.

6. The multifunctional integrated drilling rig for drilling, pile moving and pile pressing as claimed in claim 1, characterized in that: An anti-slip pad is also arranged on the inner wall of the clamping plate.

7. The multifunctional integrated drilling rig for drilling, pile moving and pile pressing as claimed in claim 1, characterized in that: The hole-guiding drilling device comprises a hole-guiding drilling machine, a front arm and a rear arm; the rear arm is hinged to the moving device and driven by the rear arm cylinder, the front arm is hinged to the rear arm and driven by the front arm cylinder, and the hole-guiding drilling machine is arranged on the front arm.

8. The multifunctional integrated drilling rig for drilling, pile moving and pile pressing as claimed in claim 1, characterized in that: The hole-guiding drilling machine device is arranged in front of the cab, and the mechanical claw device is arranged behind the cab.

9. The multifunctional integrated drilling rig for drilling, pile moving and pile pressing as claimed 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 achieve the pressing of the prefabricated soil pile.

10. The method for using the multifunctional drilling rig integrating drilling, pile moving and pile pressing as claimed in any one of claims 1 to 9, characterized in that: as follows: Step 1: Control the mobile device to align the guide hole drilling device with the designated pile position, and the guide hole drilling device starts drilling. If the soil is hard during the drilling process and the weight of the multifunctional drilling rig is not enough to withstand the reaction force of the soil, a counterweight block is installed on the mobile device; Step 2 After the lead hole drilling is completed, the mobile device is controlled to drive the multifunctional drilling rig to the storage place of the prefabricated soil piles; Step 3: Use the front gripper oil cylinder, telescopic frame, and rotating sprocket on the mechanical gripper device to adjust the position of the mechanical gripper so that it is aligned with the prefabricated soil pile. When the multifunctional drilling rig moves forward or the telescopic frame is extended, the rear gripper oil cylinder is controlled to extend to grab the prefabricated soil pile. Step 4: transport the prefabricated soil pile to the designated location, and make the prefabricated soil pile vertical and aligned with the guide hole by rotating the disk; Step 5: Press the pile foundation downwards through the mechanical claw device. If the weight of the multifunctional drilling rig is not enough to withstand the soil reaction force during the pile pressing process, install the counterweight block in the counterweight block bin. If the pile pressing is not completed when the clamping plate runs to the bottom, loosen the mechanical claw slightly, and tighten it after the clamping plate moves up, and continue to press the pile until the prefabricated soil pile of this section is completed. Step 6: Apply a cementing material to the top of the pressed prefabricated soil pile, and repeat steps (4) to (5) until the foundation pile is constructed to the designed depth.

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