Foundation precast pile driving device for civil engineering and working method thereof

Abstract

The invention relates to the field of piling devices, and discloses a foundation precast pile piling device for civil engineering and a working method thereof.The foundation precast pile piling device for civil engineering comprises a machine body, a fixing frame is installed on one side of the top of the machine body, and a double-shaft motor is installed on the top of the fixing frame; and one output end of the double-shaft motor penetrates through the top of the fixing frame and is fixedly connected with a driving screw rod, the exterior of the driving screw rod is in threaded connection with a threaded block, the exterior of the threaded block is fixedly connected with a U-shaped frame, and the interior of the U-shaped frame is slidably connected with a movable frame. By accurately positioning and keeping the stability of the precast pile in the piling process, high-precision pile body positioning is achieved, the pile body is prevented from deviating, the underground perpendicularity and the correct position of the pile are ensured, and therefore the construction quality is improved. And meanwhile, the accurate positioning of the pile body can effectively prevent the pile from deviating from the designed position or depth, the instability or differential settlement of the pile body caused by errors is reduced, and the bearing capacity and the overall stability of the foundation are ensured.

Description

Technical Field

[0001] The invention relates to the field of piling devices, in particular to a piling device for prefabricated foundation piles for civil engineering and a working method thereof. Background Art

[0002] In civil engineering, foundation precast piles are widely used in the foundation construction of various building structures, especially in unstable geological conditions such as soft soil and loose soil. As the main support means of the foundation bearing structure, precast piles can effectively provide the required stability and bearing capacity. Precast piles are usually made of reinforced concrete, prestressed concrete and other materials. They have strong compression, tension and bending resistance and are often used in infrastructure projects such as high-rise buildings, bridges and roads. However, there are some defects in the traditional precast pile driving technology that cannot be ignored. First, the existing pile driving technology often cannot ensure the verticality and precise position of the pile body underground. The pile body is prone to deviation during the driving process, resulting in deviation from the designed position or depth, thereby affecting the stability and bearing capacity of the foundation. Secondly, during the construction process, the stability of the pile body is often not effectively guaranteed. Due to the vibration of the pile driving equipment or the influence of external environmental factors, the pile body is tilted or deformed, which in turn affects the uniform settlement of the overall foundation and may even cause the pile body to become unstable, endangering the safety of the building.

[0003] Therefore, those skilled in the art have proposed a prefabricated pile driving device for foundation of civil engineering and a working method thereof to solve the above-mentioned problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a prefabricated pile driving device for foundation of civil engineering and a working method thereof, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the present invention is implemented through the following technical solutions: a prefabricated pile driving device for foundation of civil engineering, comprising a machine body, a fixing frame is installed on one side of the top of the machine body, a double-axis motor is installed on the top of the fixing frame, one output end of the double-axis motor passes through the top of the fixing frame and is fixedly connected with a driving screw, the external thread of the driving screw is connected with a thread block, the external part of the thread block is fixedly connected with a U-shaped frame, the inside of the U-shaped frame is slidably connected with a movable frame, the outer side of the movable frame is fixedly connected with a first supporting wheel, and the inner side of the U-shaped frame is rotatably installed with a A swing rod, both ends of which are equipped with second supporting wheels, an electric telescopic rod is installed on the outer side of the U-shaped frame, the output end of the electric telescopic rod passes through the outer side of the U-shaped frame and is fixedly connected to a movable block, and one side of the movable frame is provided with a slide groove matching the movable block, and the movable block is driven to move along the inner wall of the slide groove by driving the electric telescopic rod. At this time, the movable frame is driven to move, so that the second supporting wheel at one end of the swing rod moves along the outer surface of the movable frame, so that the swing rod swings inward, and the second supporting wheel and the first supporting wheel contact the outer surface of the precast foundation pile and clamp it.

[0006] Preferably, two limit pins are fixedly connected to the outer side of the movable frame, and two limit slots are provided on the inner side of the U-shaped frame, and one end of the limit pin is slidably connected to the inner wall of the limit slot.

[0007] Preferably, the other output end of the dual-axis motor is fixedly connected to a fixed disk, the external eccentric part of the fixed disk is rotatably connected to a hinge rod, the top side of the fixed frame is fixedly connected to a fixed cylinder, a movable column is slidably connected to a through hole on one side of the fixed cylinder, one end of the movable column is fixedly connected to a rubber piston, the outside of the fixed cylinder is connected to an air intake pipe and a connecting pipe in sequence, one end of the connecting pipe is connected to an annular pipe, and a nozzle is provided on the outer surface of the annular pipe.

[0008] Preferably, one-way valves are installed inside the air inlet pipe and the connecting pipe, and the conduction directions of the two one-way valves are opposite.

[0009] Preferably, the longitudinal section of the rubber piston is set to be square, the outer surface of the rubber piston is slidably connected to the inner wall of the fixed cylinder, and the end of the movable column away from the rubber piston is movably connected to one end of the hinge rod.

[0010] Preferably, a connecting frame is fixedly connected to the top of the machine body, a winch is installed on the outer side of the connecting frame, and the winch is connected to a percussion hammer via a cable.

[0011] Preferably, guide rods are fixedly connected to the left and right sides of the interior of the fixing frame, guide blocks are slidably connected to the outer sides of the guide rods, and the outer sides of the guide blocks are fixedly connected to the outer sides of the U-shaped frame.

[0012] Preferably, a connecting block is installed at the end of each of the two second support wheels, and the two connecting blocks are connected via a return spring.

[0013] A working method of a prefabricated pile driving device for foundation of civil engineering, comprising the following steps:

[0014] Step 1: First, place the prefabricated pile with foundation on the inner side of the U-shaped frame. At this time, the movable block is driven to move by starting the electric telescopic rod. At this time, the movable block will move along the inner wall of the slide slot, so that the limit pin will move along the inner wall of the limit slot, driving the movable frame to move along the direction of the prefabricated pile of foundation. At this time, the second support wheel at one end of the swing rod will slide along the inclined surface of the movable frame, driving the swing rod to swing. During the swinging process of the swing rod, the other second support wheel will contact the outer surface of the prefabricated pile of foundation, and cooperate with the first support wheel to assist in positioning the prefabricated pile of foundation.

[0015] Step 2: Start the winch to drive the hammer down, and use the hammer's own gravity to knock the top of the precast foundation pile to bury the precast foundation pile underground. At this time, start the double-axis motor to drive the driving screw to rotate, so that the threaded block moves up and down along the outer surface of the driving screw, driving the U-shaped frame to move synchronously, ensuring that the precast foundation pile is always in a balanced state;

[0016] Step three, after the piling is completed, the other output end of the dual-axis motor is started to drive the fixed plate to rotate coaxially, thereby driving one end of the hinged rod to rotate eccentrically, and the movable column drives the rubber piston to move along the inner wall of the fixed cylinder under the action of the traction force of the hinged rod. While the rubber piston moves, the air inside the fixed cylinder is discharged from the connecting pipe into the annular pipe and sprayed out from the nozzle, so that the impurities on the first support wheel and the second support wheel are removed to ensure the normal progress of the next piling work.

[0017] The present invention provides a prefabricated pile driving device for foundation of civil engineering and a working method thereof, which has the following beneficial effects:

[0018] 1. The present invention achieves high-precision pile positioning by accurately positioning and maintaining the stability of prefabricated piles during the piling process, prevents the pile from deflecting, ensures the verticality and correct position of the pile underground, and thus improves the construction quality. At the same time, the precise positioning of the pile body can effectively prevent the pile from deviating from the designed position or depth, reduce the instability or uneven settlement of the pile body caused by errors, and ensure the bearing capacity and overall stability of the foundation.

[0019] 2. The present invention starts the dual-axis motor to drive the driving screw to rotate, so that the threaded block moves downward and drives the fixed frame to move synchronously, thereby driving the positioning assembly of the present invention to move up and down, thereby further ensuring the stability of the precast pile during the piling process.

[0020] 3. The present invention generates gas during the driving process of the dual-axis motor by adding fixed cylinders, movable columns, connecting pipes and other structures that cooperate with each other, thereby removing the dirt adhering to the first support wheel and the second support wheel, reducing the labor intensity of workers and facilitating the next operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention;

[0022] Figure 2 It is a schematic diagram of the machine structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the connecting frame of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the first support wheel of the present invention;

[0025] Figure 5 It is a schematic diagram of the U-shaped frame structure of the present invention;

[0026] Figure 6 for Figure 2 The enlarged view of point A in the middle;

[0027] Figure 7 It is a cross-sectional view of the fixing tube of the present invention.

[0028] Among them, 1. body; 201. double-axis motor; 202. drive screw; 203. fixed frame; 204. threaded block; 3. guide rod; 4. guide block; 501. U-shaped frame; 502. electric telescopic rod; 503. movable block; 504. movable frame; 505. first support wheel; 506. swing rod; 507. second support wheel; 601. connecting frame; 602. winch; 603. percussion hammer; 701. fixed cylinder; 702. movable column; 703. connecting pipe; 704. annular pipe; 705. rubber piston; 706. air intake pipe; 707. fixed plate; 708. hinged rod; 801. connecting block; 802. limit groove; 803. reset spring; 804. limit pin. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Please see attached Figure 1 Attached Figure 7The embodiment of the present invention provides a prefabricated pile driving device for foundation of civil engineering, comprising a machine body 1, a fixing frame 203 is installed on one side of the top of the machine body 1, a double-axis motor 201 is installed on the top of the fixing frame 203, one of the output ends of the double-axis motor 201 passes through the top of the fixing frame 203 and is fixedly connected with a driving screw 202, the external thread of the driving screw 202 is connected with a thread block 204, the external part of the thread block 204 is fixedly connected with a U-shaped frame 501, the inside of the U-shaped frame 501 is slidably connected with a movable frame 504, the outer side of the movable frame 504 is fixedly connected with a first supporting wheel 505, the inner side of the U-shaped frame 501 is rotatably installed with a swing rod 506, both ends of the swing rod 506 are A second support wheel 507 is installed, and an electric telescopic rod 502 is installed on the outer side of the U-shaped frame 501. The output end of the electric telescopic rod 502 passes through the outer side of the U-shaped frame 501 and is fixedly connected to a movable block 503. A slide groove matching the movable block 503 is opened on one side of the movable frame 504. The movable block 503 is driven to move along the inner wall of the slide groove by driving the electric telescopic rod 502. At this time, the movable frame 504 is driven to move, so that the second support wheel 507 at one end of the swing rod 506 moves along the outer surface of the movable frame 504, and the swing rod 506 swings inward, so that the second support wheel 507 and the first support wheel 505 contact the outer surface of the foundation precast pile and clamp it.

[0031] Specifically, the body 1 is the main part of the whole device, supporting various working parts. It is made of strong metal material and can withstand various pressures and vibrations during the operation of the equipment.

[0032] The movable frame 504 is connected to the U-shaped frame 501 by sliding, and can slide along the inside of the U-shaped frame 501. When the electric telescopic rod 502 acts, the movable frame 504 will drive other components to move. The movable frame 504 is equipped with a first support wheel 505 for supporting and positioning the precast piles.

[0033] The swing rod is connected to the inside of the U-shaped frame 501 and is equipped with two second support wheels 507. The function of the swing rod 506 is to help the support wheel 506 to swing within a certain angle range so that the support wheel can be accurately positioned on the outer surface of the precast pile. The first support wheel 505 is located on one side of the movable frame 504 and is mainly responsible for clamping the foundation precast pile together with the second support wheel 507 to ensure that the pile body does not move during the entire piling process. The second support wheel 507 is located at the support wheels at both ends of the swing rod 506 to help achieve the clamping function. By cooperating with the first support wheel 505, the position of the precast pile can be accurately locked.

[0034] Start the electric telescopic rod 502, drive the movable block 503 to move along the slide slot, and then drive the movable frame 504 to slide in the direction of the foundation precast pile. At this time, the swing rod 506 will make the second support wheel 507 move along the inclined surface of the movable frame 504, and finally clamp the foundation precast pile together with the first support wheel 505 to ensure the stability of the position of the pile body. Subsequently, start the winch 602, and the percussion hammer 603 is lowered by gravity, and the percussion hammer 603 is used to knock the foundation precast pile gradually into the ground. At this time, the dual-axis motor 201 continues to drive the threaded block 204 to move up and down along the driving screw 202, ensuring that the U-shaped frame 501 moves synchronously, keeping the pile body vertical and stable, and avoiding deviation.

[0035] Two limiting pins 804 are fixedly connected to the outer side of the movable frame 504 , and two limiting grooves 802 are provided on the inner side of the U-shaped frame 501 . One end of the limiting pin 804 is slidably connected to the inner wall of the limiting groove 802 .

[0036] Specifically, when the movable frame 504 moves, the limiting pin 804 moves along the inner wall of the limiting groove 802 , thereby ensuring the stability of the movable frame 504 during the movement.

[0037] The other output end of the dual-axis motor 201 is fixedly connected to a fixed disk 707, and the outer eccentric part of the fixed disk 707 is rotatably connected to a hinge rod 708. A fixed cylinder 701 is fixedly connected to one side of the top of the fixed frame 203, and a movable column 702 is slidably connected to a through hole on one side of the fixed cylinder 701. One end of the movable column 702 is fixedly connected to a rubber piston 705. The outer side of the fixed cylinder 701 is connected to an air intake pipe 706 and a connecting pipe 703 in sequence, and one end of the connecting pipe 703 is connected to an annular pipe 704, and a nozzle is arranged on the outer surface of the annular pipe 704. Both the air intake pipe 706 and the connecting pipe 703 are installed with a one-way valve inside, and the conduction directions of the two one-way valves are opposite. The longitudinal section of the rubber piston 705 is set to be square, and the outer surface of the rubber piston 705 is slidably connected to the inner wall of the fixed cylinder 701. The end of the movable column 702 away from the rubber piston 705 is movably connected to one end of the hinge rod 708.

[0038] Specifically, the function of the hinge rod 708 is to convert the rotation of the fixed plate 707 into a linear traction force. When the fixed plate 707 rotates, the hinge rod 708 will drive the movement of the movable column 702 along with the eccentric rotation. The connection point of the hinge rod 708 is rotatable, which allows it to move freely during the rotation process, so that other components can follow this movement.

[0039] The rubber piston 705 is a rubber sealing component with a square cross section, which is installed at the end of the movable column 702. Its outer surface is in sliding contact with the inner wall of the fixed cylinder 701. The main function of the rubber piston 705 is to push out the air in the fixed cylinder 701 by sliding contact with the inner wall of the fixed cylinder 701. As the movable column 702 slides, the rubber piston 705 moves along the inner wall of the fixed cylinder 701, thereby squeezing the air and causing it to flow.

[0040] The air inlet pipe 706 is used to introduce external air into the system, while the connecting pipe 703 is a pipe connecting the fixed cylinder 701 and the annular pipe 704. One-way valves are installed inside the air inlet pipe 706 and the connecting pipe 703 to ensure that the air can only flow in one direction. The function of the one-way valve is to ensure that the air can only enter or exit the system, thereby controlling the flow direction of the airflow. The annular pipe 704 is a pipe surrounding the fixed cylinder 701, and a nozzle is installed on its outer surface. After the air enters the fixed cylinder 701 through the air inlet pipe 706 and the connecting pipe 703, it will enter the connecting pipe 703 through the pushing of the rubber piston 705, and finally be introduced into the annular pipe 704. When the air enters the annular pipe 704, it is sprayed out through the nozzle to form a spraying effect.

[0041] The function of the one-way valve is to control the one-way flow of air. One-way valves are installed inside the air inlet pipe 706 and the connecting pipe 703, respectively. One valve allows air to enter the fixed cylinder 701 from the outside, while the other valve allows air to be discharged from the fixed cylinder 701. The two one-way valves have opposite conduction directions to ensure the normal flow and discharge of air.

[0042] The output end of the dual-axis motor 201 transmits power through the fixed disk 707, driving the eccentric rotation of the hinged rod 708. The rotation of the hinged rod 708 pulls the rubber piston 705 through the movable column 702, causing the rubber piston 705 to slide in the fixed cylinder 701. As the rubber piston 705 moves, the air in the fixed cylinder 701 is discharged, and the air enters the annular tube 704 through the connecting tube 703 and is finally ejected from the nozzle. The ejected air acts on the first support wheel 505 and the second support wheel 507, which can remove impurities on these wheels, providing a guarantee for the normal progress of the next piling work.

[0043] A connecting frame 601 is fixedly connected to the top of the machine body 1 , a winch 602 is installed on the outer side of the connecting frame 601 , and the winch 602 is connected to a striking hammer 603 via a cable.

[0044] Specifically, the winch 602 is started to drive the striking hammer 603 to descend, and the striking hammer 603 is used to strike the top of the precast foundation pile using its own gravity, so that the precast foundation pile is buried underground.

[0045] The left and right sides of the fixed frame 203 are fixedly connected with guide rods 3 , the outer sides of the guide rods 3 are slidably connected with guide blocks 4 , and the outer sides of the guide blocks 4 are fixedly connected with the outer sides of the U-shaped frame 501 .

[0046] Specifically, during the movement of the U-shaped frame 501 , the guide block 4 moves along the outer surface of the guide rod 3 , thereby ensuring the stability of the fixing frame 203 during the movement.

[0047] A connecting block 801 is installed at the end of each of the two second supporting wheels 507 , and the two connecting blocks 801 are connected via a return spring 803 .

[0048] Specifically, when the movable frame 504 moves back, the two connecting blocks 801 move away from each other under the elastic force of the return spring 803, so that the swing rod 506 returns to the initial state.

[0049] A working method of a prefabricated pile driving device for foundation of civil engineering, comprising the following steps:

[0050] Step 1, first place the prefabricated pile with foundation on the inner side of the U-shaped frame 501, and then start the electric telescopic rod 502 to drive the movable block 503 to move, and then the movable block 503 will move along the inner wall of the slide slot, so that the limit pin 804 moves along the inner wall of the limit slot 802, driving the movable frame 504 to move along the direction of the prefabricated pile of foundation, and then the second support wheel 507 at one end of the swing rod 506 will slide along the inclined surface of the movable frame 504, driving the swing rod 506 to swing, and in the process of the swing rod 506 swinging, the other second support wheel 507 will contact the outer surface of the prefabricated pile of foundation, and cooperate with the first support wheel 505 to assist in positioning the prefabricated pile of foundation;

[0051] Step 2: Start the winch 602 to drive the hammer 603 to descend, and use the weight of the hammer 603 to knock the top of the precast foundation pile to bury the precast foundation pile underground. At this time, start the dual-axis motor 201 to drive the driving screw 202 to rotate, so that the threaded block 204 moves up and down along the outer surface of the driving screw 202, driving the U-shaped frame 501 to move synchronously, ensuring that the precast foundation pile is always in a balanced state;

[0052] Step 3. After the piling is completed, the other output end of the dual-axis motor 201 is started to drive the fixed plate 707 to rotate coaxially, thereby driving one end of the hinged rod 708 to rotate eccentrically. The movable column 702 drives the rubber piston 705 to move along the inner wall of the fixed cylinder 701 under the traction force of the hinged rod 708. While the rubber piston 705 moves, the air inside the fixed cylinder 701 is discharged from the connecting pipe 703 into the annular pipe 704 and sprayed out from the nozzle, so that the impurities on the first support wheel 505 and the second support wheel 507 are removed to ensure the normal progress of the next piling work.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated pile driving device for foundation of civil engineering, comprising a body (1), characterized in that: A fixing frame (203) is installed on one side of the top of the machine body (1), a double-axis motor (201) is installed on the top of the fixing frame (203), one of the output ends of the double-axis motor (201) passes through the top of the fixing frame (203) and is fixedly connected to a driving screw rod (202), the external thread of the driving screw rod (202) is connected to a thread block (204), the external part of the thread block (204) is fixedly connected to a U-shaped frame (501), the interior of the U-shaped frame (501) is slidably connected to a movable frame (504), the outer side of the movable frame (504) is fixedly connected to a first supporting wheel (505), the inner side of the U-shaped frame (501) is rotatably mounted with a swing rod (506), and both ends of the swing rod (506) are mounted with second supporting wheels ( 507), an electric telescopic rod (502) is installed on the outer side of the U-shaped frame (501), the output end of the electric telescopic rod (502) passes through the outer side of the U-shaped frame (501) and is fixedly connected to a movable block (503), and a sliding groove matching the movable block (503) is opened on one side of the movable frame (504), and the movable block (503) is driven to move along the inner wall of the sliding groove by driving the electric telescopic rod (502), and at this time, the movable frame (504) is driven to move, so that the second support wheel (507) at one end of the swing rod (506) moves along the outer surface of the movable frame (504), so that the swing rod (506) swings inward, and the second support wheel (507) and the first support wheel (505) contact the outer surface of the foundation precast pile and clamp it.

2. A prefabricated pile driving device for foundation of civil engineering according to claim 1, characterized in that: Two limit pins (804) are fixedly connected to the outer side of the movable frame (504), and two limit slots (802) are provided on the inner side of the U-shaped frame (501), and one end of the limit pin (804) is slidably connected to the inner wall of the limit slot (802).

3. A prefabricated pile driving device for foundation of civil engineering according to claim 1, characterized in that: The other output end of the dual-axis motor (201) is fixedly connected to a fixed disk (707), and an external eccentric portion of the fixed disk (707) is rotatably connected to a hinge rod (708). A top side of the fixed frame (203) is fixedly connected to a fixed cylinder (701), and a through hole on one side of the fixed cylinder (701) is slidably connected to a movable column (702), and one end of the movable column (702) is fixedly connected to a rubber piston (705). The outer side of the fixed cylinder (701) is connected in sequence to an air intake pipe (706) and a connecting pipe (703), and one end of the connecting pipe (703) is connected to an annular pipe (704), and a nozzle is provided on the outer surface of the annular pipe (704).

4. A prefabricated pile driving device for foundation of civil engineering according to claim 3, characterized in that: One-way valves are installed inside the air inlet pipe (706) and the connecting pipe (703), and the conduction directions of the two one-way valves are opposite.

5. A prefabricated pile driving device for foundation of civil engineering according to claim 3, characterized in that: The longitudinal section of the rubber piston (705) is arranged to be square, the outer surface of the rubber piston (705) is slidably connected to the inner wall of the fixed cylinder (701), and one end of the movable column (702) away from the rubber piston (705) is movably connected to one end of the hinge rod (708).

6. A prefabricated pile driving device for foundation of civil engineering according to claim 1, characterized in that: A connecting frame (601) is fixedly connected to the top of the machine body (1), a winch (602) is installed on the outer side of the connecting frame (601), and the winch (602) is connected to a striking hammer (603) via a cable.

7. A prefabricated pile driving device for civil engineering foundation according to claim 1, characterized in that: The left and right sides of the interior of the fixed frame (203) are fixedly connected to guide rods (3), the outer sides of the guide rods (3) are slidably connected to guide blocks (4), and the outer sides of the guide blocks (4) are fixedly connected to the outer sides of the U-shaped frame (501).

8. A prefabricated pile driving device for civil engineering foundation according to claim 1, characterized in that: A connecting block (801) is installed at the end of each of the two second supporting wheels (507), and the two connecting blocks (801) are connected via a return spring (803).

9. A working method of a prefabricated pile driving device for civil engineering foundation, according to the prefabricated pile driving device for civil engineering foundation according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1, first place the prefabricated pile with foundation on the inner side of the U-shaped frame (501), and then start the electric telescopic rod (502) to drive the movable block (503) to move, and then the movable block (503) will move along the inner wall of the slide groove, so that the limit pin (804) moves along the inner wall of the limit groove (802), driving the movable frame (504) to move along the direction of the prefabricated pile of foundation, and then the second support wheel (507) at one end of the swing rod (506) will slide along the inclined surface of the movable frame (504), driving the swing rod (506) to swing, and in the process of the swing rod (506) swinging, the other second support wheel (507) will contact the outer surface of the prefabricated pile of foundation, and cooperate with the first support wheel (505) to assist in positioning the prefabricated pile of foundation; Step 2: Start the winch (602) to drive the hammer (603) to descend, and use the weight of the hammer (603) to knock the top of the precast foundation pile, so that the precast foundation pile is buried underground. At this time, start the double-axis motor (201) to drive the driving screw (202) to rotate, so that the threaded block (204) moves up and down along the outer surface of the driving screw (202), driving the U-shaped frame (501) to move synchronously, ensuring that the precast foundation pile is always in a balanced state; Step 3: After the piling is completed, the other output end of the dual-axis motor (201) is started to drive the fixed plate (707) to rotate coaxially, thereby driving one end of the hinged rod (708) to rotate eccentrically. The movable column (702) drives the rubber piston (705) to move along the inner wall of the fixed cylinder (701) under the action of the traction force of the hinged rod (708). While the rubber piston (705) moves, the air inside the fixed cylinder (701) is discharged from the connecting pipe (703) into the annular pipe (704) and sprayed out from the nozzle. In this way, impurities on the first support wheel (505) and the second support wheel (507) are removed, ensuring the normal progress of the next piling work.

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