Adjustable automatic pile driver for construction site and control method

Abstract

The invention discloses an adjustable automatic pile driver for a construction site and a control method, and relates to the technical field of pile drivers. The pile driver comprises a frame and a pile driver vertical arm, hydraulic supporting legs are arranged on the two sides of the frame, a hydraulic and electric controller and a cab are fixedly installed on the top face of the frame, and angle adjusting assemblies are arranged on the surface of the frame and the surface of the pile driver vertical arm and used for adjusting the pile driving angle of the pile driver vertical arm. According to the pile driver, the hydraulic and electrical controller fixed to the top face of the frame controls all hydraulic execution elements and electrical equipment in a centralized mode, the angle adjusting assembly is connected between the frame and the vertical arm of the pile driver, and the angle adjusting assembly is used for driving and locking the inclination angle of the vertical arm of the pile driver relative to the frame, so that non-vertical pile driving is achieved; a limiting mechanism and a lifting traction mechanism which are arranged on the surface of the vertical arm of the pile driver cooperate together to lift and release the pile hammer, and the pile hammer slides on the vertical arm of the pile driver through a sliding structure on the pile hammer and performs pile driving operation at a set inclination angle.

Description

Technical Field

[0001] This invention relates to the field of pile driver technology, specifically to an adjustable automatic pile driver and control method for use on construction sites. Background Technology

[0002] In building construction, piling is a crucial part of foundation engineering and is widely used in fields such as foundation reinforcement, bridge construction, and high-rise buildings.

[0003] Traditional automatic pile drivers have certain limitations in practical applications, mainly in the direction of the pile hammer's movement. Currently, most automatic pile drivers' hammers can only descend vertically and cannot adjust the striking angle according to construction needs. In some special construction scenarios, such as when it is necessary to drive foundation piles at an angle below ground level, traditional automatic pile drivers cannot accurately hit the inclined piles, resulting in low construction efficiency or even failure to complete the construction task.

[0004] Therefore, an adjustable automatic pile driver and its control method for use on construction sites are proposed. Summary of the Invention

[0005] The purpose of this invention is to solve the problems mentioned in the background art by providing an adjustable automatic pile driver and control method for use on construction sites.

[0006] To achieve the above objectives, the present invention specifically adopts the following technical solution: An adjustable automatic pile driver for construction sites includes a chassis and a pile driver boom. Hydraulic support legs are provided on both sides of the chassis. A hydraulic and electrical controller and a cab are fixedly installed on the top surface of the chassis. An angle adjustment assembly is provided on the surface of the chassis and the pile driver boom for adjusting the pile driving angle of the pile driver boom. A limit mechanism is provided on the surface of the pile driver boom. A lifting and traction mechanism is provided on the top surface of the chassis and the pile driver boom. A pile hammer is slidably mounted on the pile driver boom.

[0007] Furthermore, the hydraulic support leg includes connecting protrusions fixedly installed on both sides of the vehicle frame, with a first hydraulic rod fixedly installed at the end of the connecting protrusion, and a support frame fixedly connected to the end of the first hydraulic rod.

[0008] Furthermore, the angle adjustment assembly includes two sets of side frames fixedly installed on the top surface of the frame and two sets of connecting plates fixedly installed on one side wall of the angle adjustment assembly. Connecting shafts are fixedly inserted into the two sets of connecting plates, and the connecting shafts are rotatably inserted into the two sets of side frames. An angular displacement sensor is fixedly installed on the surface of one set of side frames, and the output end of the angular displacement sensor is fixedly connected to the end of its connecting shaft. A second hydraulic rod is hingedly installed on the top surface of the frame and the surface of the pile driver's vertical arm through a hinge.

[0009] Furthermore, the pile driver's vertical arm includes a square steel vertical arm fixedly installed at the ends of two sets of connecting plates. Several sets of through holes are evenly spaced on both sides of the square steel vertical arm. Climbing frames are fixedly installed on both sides of the square steel vertical arm. Multiple sets of mounting blocks are fixedly installed on the surface of the square steel vertical arm, and guide rods are fixedly installed on the surface of the mounting blocks.

[0010] Furthermore, the limiting mechanism includes two sets of bearing seats fixedly installed on one side wall of the pile driver's vertical arm, with a first pulley rotatably installed on the two sets of bearing seats, and two sets of mounting brackets fixedly installed at the top of the pile driver's vertical arm, with a second pulley rotatably inserted between the two sets of mounting brackets.

[0011] Furthermore, the lifting and traction mechanism includes a protective cover fixedly installed on the top surface of the vehicle frame. A worm gear motor is fixedly installed on one side wall of the protective cover. A winch is fixedly connected to the output end of the worm gear motor. The winch is located inside the protective cover. A traction rope is wound on the surface of the winch. The traction rope passes through the first pulley and the second pulley respectively. A traction frame is fixedly connected to the end of the traction rope. A release mechanism is fixedly installed on the bottom surface of the traction frame. The traction frame and the release mechanism are slidably sleeved on the surface of the guide rod.

[0012] Furthermore, the pile hammer is made of metal iron, and a sliding frame is fixedly installed on the rear side wall of the pile hammer. The sliding frame is slidably sleeved on the surface of the guide rod to guide the vertical movement of the pile hammer.

[0013] A control method for an adjustable automatic pile driver used on a construction site includes the following steps: Step S1: Control the extension of the first hydraulic rod to press the support frame firmly against the ground and stabilize the vehicle frame; Step S2: Control the movement of the second hydraulic rod through the hydraulic and electrical controller to drive the vertical arm of the pile driver to rotate around the connecting shaft. Combined with the angle signal fed back by the angular displacement sensor, the vertical arm of the pile driver is precisely adjusted to the set tilt angle. Step S3: Start the worm gear motor to drive the winch to wind the traction rope. Guided by the first and second pulleys in the limiting mechanism, the traction frame and pile hammer are raised along the guide rod to the set height. Step S4: Control the release mechanism to release the pile hammer, allowing it to fall freely along the guide rod to complete the pile driving operation; Step S5: Repeat the lifting and releasing process until the preset piling depth or number of times is reached.

[0014] Furthermore, the angular displacement sensor monitors the tilt angle of the pile driver's vertical arm in real time and feeds the signal back to the hydraulic and electrical controller. The controller controls the second hydraulic rod to make fine adjustments based on the deviation between the set angle and the measured angle, thereby achieving closed-loop control of the pile driving angle.

[0015] The beneficial effects of this invention are as follows: Hydraulic support legs on both sides of the frame can extend during piling operations to stably support the entire equipment and prevent overturning. A hydraulic and electrical controller fixed on the top of the frame centrally controls all hydraulic actuators and electrical equipment. It is connected between the frame and the piling machine's vertical arm through an angle adjustment component to drive and lock the tilt angle of the piling machine's vertical arm relative to the frame, thereby achieving non-vertical piling. The limiting mechanism and lifting traction mechanism on the surface of the piling machine's vertical arm work together to lift and release the pile hammer. The pile hammer slides on the piling machine's vertical arm through a sliding structure on it, performing piling operations at a set tilt angle. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is the present invention. Figure 1 Enlarged view of part A; Figure 4 This is a partial schematic diagram of the present invention; Figure 5 This is another partial schematic diagram of the present invention; Figure 6 This is the present invention. Figure 5 Enlarged view of part B; Figure 7 This is the present invention. Figure 5 Enlarged view of part C; Figure 8 This is a partial schematic diagram of the lifting mechanism of the present invention; Figure 9 This is a schematic diagram of the hydraulic support leg of the present invention; Reference numerals: 1. Chassis; 2. Hydraulic support leg; 201. Connecting protrusion; 202. First hydraulic rod; 203. Support frame; 3. Hydraulic and electrical controller; 4. Angle adjustment assembly; 401. Side frame; 402. Connecting plate; 403. Connecting shaft; 404. Angular displacement sensor; 405. Second hydraulic rod; 5. Pile driver boom; 501. Square steel boom; 502. Through hole; 503. Climbing frame; 504. Mounting block; 505. Guide rod; 6. Limiting mechanism; 601. Shaft seat; 602. First pulley; 603. Mounting frame; 604. Second pulley; 7. Lifting and traction mechanism; 701. Protective cover; 702. Worm gear motor; 703. Winch; 704. Traction rope; 705. Traction frame; 706. Release mechanism; 8. Pile hammer; 81. Sliding frame; 9. Cab. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0019] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0021] like Figures 1 to 9 As shown, an adjustable automatic pile driver for construction sites includes at least a frame 1, hydraulic support legs 2, a hydraulic and electrical controller 3, an angle adjustment assembly 4, a pile driver boom 5, a limiting mechanism 6, a lifting and traction mechanism 7, a pile hammer 8, and a driver's cab 9. like Figure 4 , Figure 5 and Figure 7 As shown, specifically, the vertical arm 5 of the pile driver includes a square steel vertical arm 501 fixedly installed at the ends of two sets of connecting plates 402. Several sets of through holes 502 are evenly and equidistantly opened on both sides of the square steel vertical arm 501. Climbing frames 503 are fixedly installed on both sides of the square steel vertical arm 501. Multiple sets of mounting blocks 504 are fixedly installed on the surface of the square steel vertical arm 501. Guide rods 505 are fixedly installed on the surface of the mounting blocks 504.

[0022] More specifically, the several sets of through holes 502 evenly spaced on both sides of the square steel vertical arm 501 reduce its weight. The climbing frame 503 fixedly installed on both sides of the square steel vertical arm 501 provides a passage for maintenance personnel to climb and inspect. Multiple sets of mounting blocks 504 are fixedly installed on the surface of the square steel vertical arm 501, and the guide rods 505 fixedly installed on them provide precise linear guidance for the up and down movement of the pile hammer 8.

[0023] Hydraulic support legs 2 are provided on both sides of the frame 1; like Figure 1 , Figure 2 and Figure 9 As shown, specifically, the hydraulic support leg 2 includes connecting protrusions 201 fixedly installed on both sides of the frame 1, a first hydraulic rod 202 fixedly installed at the end of the connecting protrusion 201, and a support frame 203 fixedly connected to the end of the first hydraulic rod 202.

[0024] More specifically, when support is needed, the hydraulic system drives the piston rod of the first hydraulic rod 202 to extend, pushing the support frame 203 downward until the support plate at its bottom is pressed against the ground, lifting the frame 1 off the ground and providing stable support. After the operation is completed, the piston rod retracts, driving the support frame 203 off the ground and retracting it, making it easy to move the equipment.

[0025] The top surface of the chassis 1 is fixedly equipped with a hydraulic and electrical controller 3 and a cab 9. An angle adjustment assembly 4 is provided on the surface of the chassis 1 and the vertical arm 5 of the pile driver to adjust the pile driving angle of the vertical arm 5 of the pile driver. like Figures 3 to 5 As shown, specifically, the angle adjustment assembly 4 includes two sets of side frames 401 fixedly installed on the top surface of the frame 1 and two sets of connecting plates 402 fixedly installed on one side wall of the angle adjustment assembly 4. Connecting shafts 403 are fixedly inserted into the two sets of connecting plates 402. The connecting shafts 403 are rotatably inserted into the two sets of side frames 401. An angular displacement sensor 404 is fixedly installed on the surface of one set of side frames 401. The output end of the angular displacement sensor 404 is fixedly connected to the end of its connecting shaft 403. The top surface of the frame 1 and the surface of the pile driver vertical arm 5 are hinged together by a hinge joint to install a second hydraulic rod 405.

[0026] More specifically, the connecting shaft 403 is fixedly inserted into two sets of connecting plates 402, and its two ends are rotatably connected to two sets of side frames 401, so that the vertical arm 5 of the pile driver can pitch and rotate around the connecting shaft 403 as the axis. The angular displacement sensor 404, which is fixedly installed on the surface of one of the side frames 401, detects and feeds back the rotation angle of the connecting shaft 403 in real time, that is, the real-time tilt angle of the vertical arm 5 of the pile driver. By controlling the extension or retraction of the piston rod of the second hydraulic rod 405, the vertical arm 5 of the pile driver can be rotated around the connecting shaft 403 and precisely adjusted to the required pile driving angle.

[0027] A limit mechanism 6 is provided on the surface of the vertical arm 5 of the pile driver; like Figures 4 to 6 As shown, specifically, the limiting mechanism 6 includes two sets of bearing seats 601 fixedly installed on one side wall of the pile driver's vertical arm 5. A first pulley 602 is rotatably installed on the two sets of bearing seats 601. Two sets of mounting brackets 603 are fixedly installed at the top of the pile driver's vertical arm 5. A second pulley 604 is rotatably inserted between the two sets of mounting brackets 603.

[0028] More specifically, the first pulley 602 and the second pulley 604 together form a fixed pulley group, which is used to change the transmission direction of the traction rope 704, convert the horizontal rotational traction force generated by the winch 703 into the vertical tension of the lifting pile hammer 8, and reduce the friction during the traction process.

[0029] A lifting and traction mechanism 7 is provided on the top surface of the frame 1 and on the vertical arm 5 of the pile driver, and a pile hammer 8 is slidably mounted on the vertical arm 5 of the pile driver.

[0030] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, specifically, the lifting traction mechanism 7 includes a protective cover 701 fixedly installed on the top surface of the frame 1. A worm gear motor 702 is fixedly installed on one side wall of the protective cover 701. A winch 703 is fixedly connected to the output end of the worm gear motor 702. The winch 703 is located inside the protective cover 701. A traction rope 704 is wound on the surface of the winch 703. The traction rope 704 passes through the first pulley 602 and the second pulley 604 respectively. A traction frame 705 is fixedly connected to the end of the traction rope 704. A release mechanism 706 is fixedly installed on the bottom surface of the traction frame 705. The traction frame 705 and the release mechanism 706 are slidably sleeved on the surface of the guide rod 505.

[0031] More specifically, by starting the worm gear motor 702 to rotate forward, the winch 703 is driven to wind the traction rope 704. The first pulley 602 and the second pulley 604 cause the traction frame 705 and the release mechanism 706 at its bottom and the pile hammer 8 to slide upward along the guide rod 505, thereby achieving lifting. Reversing the rotation causes the pile hammer 8 to be lowered along the guide rod 505. The release mechanism 706 then enables the pile hammer 8 to be electromagnetically picked up.

[0032] In some practical applications, the pile hammer 8 is made of metal iron, and a sliding frame 81 is fixedly installed on the rear side wall of the pile hammer 8. The sliding frame 81 is slidably sleeved on the surface of the guide rod 505 to guide the vertical movement of the pile hammer 8.

[0033] More specifically, the pile hammer 8 is made of high-density iron and provides impact potential energy with its own weight. The sliding frame 81 fixedly installed on its rear side wall slides on the surface of the guide rod 505, ensuring that the pile hammer 8 can always move along the straight trajectory determined by the tilt angle set by the angle adjustment component 4 during the free fall after being lifted and released, and accurately strike the inclined or vertical pile.

[0034] A control method for an adjustable automatic pile driver used on a construction site, characterized by comprising the following steps: Step S1: Control the extension of the first hydraulic rod 202 to press the support frame 203 firmly against the ground and stabilize the support frame 1; Step S2: Control the second hydraulic rod 405 to move through the hydraulic and electrical controller 3, drive the pile driver vertical arm 5 to rotate around the connecting shaft 403, and combine the angle signal fed back by the angular displacement sensor 404 to precisely adjust the pile driver vertical arm 5 to the set tilt angle; Step S3: Start the worm gear motor 702, drive the winch 703 to wind the traction rope 704, and guide it through the first pulley 602 and the second pulley 604 in the limiting mechanism 6, so as to drive the traction frame 705 and the pile hammer 8 to rise along the guide rod 505 to the set height. Step S4: Control the release mechanism 706 to release the pile hammer 8, allowing it to fall freely along the guide rod 505, thus completing the pile driving operation; Step S5: Repeat the lifting and releasing process until the preset piling depth or number of times is reached.

[0035] In some practical applications, the angular displacement sensor 404 monitors the tilt angle of the vertical arm 5 of the pile driver in real time and feeds the signal back to the hydraulic and electrical controller 3. The controller controls the second hydraulic rod 405 to make fine adjustments based on the deviation between the set angle and the measured angle, so as to realize closed-loop control of the pile driving angle.

[0036] In summary: The hydraulic support legs 2 on both sides of the frame 1 can extend during piling operations to stably support the entire equipment and prevent overturning. The hydraulic and electrical controller 3 fixed on the top surface of the frame 1 centrally controls all hydraulic actuators and electrical equipment. It is connected between the frame 1 and the piling machine vertical arm 5 through the angle adjustment component 4, which is used to drive and lock the tilt angle of the piling machine vertical arm 5 relative to the frame 1, thereby realizing non-vertical piling. The limiting mechanism 6 and the lifting traction mechanism 7 on the surface of the piling machine vertical arm 5 work together to lift and release the pile hammer 8. The pile hammer 8 slides on the piling machine vertical arm 5 through the sliding structure on it, and performs piling operations along the set tilt angle.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. An adjustable automatic pile driver for construction sites, characterized in that, The vehicle includes a frame (1) and a pile driver boom (5). Hydraulic support legs (2) are provided on both sides of the frame (1). A hydraulic and electrical controller (3) and a cab (9) are fixedly installed on the top surface of the frame (1). An angle adjustment assembly (4) is provided on the surface of the frame (1) and the pile driver boom (5) to adjust the pile driving angle of the pile driver boom (5). A limit mechanism (6) is provided on the surface of the pile driver boom (5). A lifting and traction mechanism (7) is provided on the top surface of the frame (1) and the pile driver boom (5). A pile hammer (8) is slidably provided on the pile driver boom (5).

2. The adjustable automatic pile driver for construction sites according to claim 1, characterized in that, The hydraulic support leg (2) includes connecting protrusions (201) fixedly installed on both sides of the frame (1). A first hydraulic rod (202) is fixedly installed at the end of the connecting protrusion (201), and a support frame (203) is fixedly connected to the end of the first hydraulic rod (202).

3. The adjustable automatic pile driver for construction sites according to claim 1, characterized in that, The angle adjustment assembly (4) includes two sets of side frames (401) fixedly installed on the top surface of the frame (1) and two sets of connecting plates (402) fixedly installed on one side wall of the angle adjustment assembly (4). Connecting shafts (403) are fixedly inserted on the two sets of connecting plates (402). The connecting shafts (403) are rotatably inserted into the two sets of side frames (401). An angular displacement sensor (404) is fixedly installed on the surface of one set of side frames (401). The output end of the angular displacement sensor (404) is fixedly connected to the end of its connecting shaft (403). The top surface of the frame (1) and the surface of the pile driver vertical arm (5) are hinged together by a hinge joint and a second hydraulic rod (405) is installed.

4. The adjustable automatic pile driver for construction sites according to claim 3, characterized in that, The pile driver boom (5) includes a square steel boom (501) fixedly installed at the ends of two sets of connecting plates (402). Several sets of through holes (502) are evenly and equidistantly opened on both sides of the square steel boom (501). Climbing frames (503) are fixedly installed on both sides of the square steel boom (501). Several sets of mounting blocks (504) are fixedly installed on the surface of the square steel boom (501). Guide rods (505) are fixedly installed on the surface of the mounting blocks (504).

5. An adjustable automatic pile driver for construction sites according to claim 4, characterized in that, The limiting mechanism (6) includes two sets of bearing seats (601) fixedly installed on one side wall of the vertical arm (5) of the pile driver. A first pulley (602) is rotatably installed on the two sets of bearing seats (601). Two sets of mounting brackets (603) are fixedly installed at the top of the vertical arm (5) of the pile driver. A second pulley (604) is rotatably inserted between the two sets of mounting brackets (603).

6. An adjustable automatic pile driver for construction sites according to claim 5, characterized in that, The lifting traction mechanism (7) includes a protective cover (701) fixedly installed on the top surface of the frame (1). A worm gear motor (702) is fixedly installed on one side wall of the protective cover (701). A winch (703) is fixedly connected to the output end of the worm gear motor (702). The winch (703) is located inside the protective cover (701). A traction rope (704) is wound on the surface of the winch (703). The traction rope (704) passes through the first pulley (602) and the second pulley (604) respectively. A traction frame (705) is fixedly connected to the end of the traction rope (704). A release mechanism (706) is fixedly installed on the bottom surface of the traction frame (705). The traction frame (705) and the release mechanism (706) are slidably sleeved on the surface of the guide rod (505).

7. An adjustable automatic pile driver for construction sites according to claim 4, characterized in that, The pile hammer (8) is made of metal iron, and a sliding frame (81) is fixedly installed on the rear side wall of the pile hammer (8). The sliding frame (81) is slidably sleeved on the surface of the guide rod (505) to guide the vertical movement of the pile hammer (8).

8. A control method for an adjustable automatic pile driver for construction sites according to any one of claims 1 to 7, characterized in that, Includes the following steps: Step S1: Control the first hydraulic rod (202) to extend, so that the support frame (203) is pressed against the ground, and the support frame (1) is stabilized. Step S2: Control the second hydraulic rod (405) to move through the hydraulic and electrical controller (3), drive the pile driver vertical arm (5) to rotate around the connecting shaft (403), and combine the angle signal fed back by the angular displacement sensor (404) to precisely adjust the pile driver vertical arm (5) to the set tilt angle; Step S3: Start the worm gear motor (702) to drive the winch (703) to wind the traction rope (704), and guide it through the first pulley (602) and the second pulley (604) in the limiting mechanism (6) to drive the traction frame (705) and the pile hammer (8) to rise to the set height along the guide rod (505); Step S4: Control the release mechanism (706) to release the pile hammer (8), allowing it to fall freely along the guide rod (505) to complete the pile driving operation; Step S5: Repeat the lifting and releasing process until the preset piling depth or number of times is reached.

9. The control method for an adjustable automatic pile driver for construction sites according to claim 8, characterized in that, The angular displacement sensor (404) monitors the tilt angle of the vertical arm (5) of the pile driver in real time and feeds the signal back to the hydraulic and electrical controller (3). The controller controls the second hydraulic rod (405) to make fine adjustments based on the deviation between the set angle and the measured angle, so as to realize the closed-loop control of the pile driving angle.

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