A pile driver

Abstract

A pile driver, in actual use, moves its frame to a designated position, then a crane lifts the pile and moves it directly above the frame. When the crane lowers the pile, the bottom of the pile first passes through a guide mechanism, ensuring the pile is vertical and quickly aligned with the clamping mechanism. After the pile reaches the designated position, the clamping mechanism clamps and secures it. At this point, the pile can be separated from the crane. Then, a lifting mechanism is activated, driving the clamping mechanism vertically downwards along the frame, thus pressing the clamped pile into the ground. After the clamping mechanism moves downwards to a designated or extreme position, the pile is released, and the lifting mechanism resets the clamping mechanism. This process is repeated continuously to complete the pile driving operation. In summary, by using this pile driver, guidance and positioning can be performed directly during the crane's pile lowering process.

Description

Technical Field

[0001] This invention relates to the field of pile driving equipment technology, specifically to a pile driving machine. Background Technology

[0002] A pile driver is a piling machine that uses static pressure to drive piles into the ground. It comes in two types: mechanical and hydraulic. It is used for piling in soft soil layers, such as for underground railways, seaports, bridges, hydroelectric power stations, offshore oil platforms, and national defense projects. During operation, the pile driver does not damage the pile head, the pile body is not bent, and there is no noise or vibration impact, minimizing its impact on the surrounding environment and buildings. It does not damage the soil structure, and the pile's bearing capacity can be directly read from the pressure gauge during the piling process, eliminating the need for additional testing. It operates smoothly and can both drive and pull piles, but the equipment is heavy and cannot drive inclined piles, limiting its application.

[0003] Piling machines are usually used in conjunction with cranes, but the piles often sway back and forth after being lifted by the crane, making it difficult to align them with the piling machine. This is especially true in severe weather conditions such as strong winds, which can seriously affect work efficiency. Although some construction sites tie ropes to the piles for manual traction and positioning, this is time-consuming and labor-intensive, and not convenient for widespread adoption. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the above problems, this invention provides a pile driver that can be guided and positioned directly during the process of a crane lowering a pile.

[0006] (II) Technical Solution

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

[0008] A pile driver, used in conjunction with a crane, can press piles into the ground using pressure. It includes a vertically mounted frame for support and fixation; and further includes:

[0009] A guiding mechanism, installed on the upper part of the frame, can guide the piles lifted by the crane;

[0010] A clamping mechanism is slidably connected to the lower part of the frame and is provided corresponding to the guide mechanism for clamping and fixing the pile passing through the guide mechanism;

[0011] A lifting mechanism is installed on the frame and driven to connect to the clamping mechanism, so that the lifting mechanism can drive the clamping mechanism to move vertically along the frame, thereby completing the pile driving or pile extraction operation.

[0012] Preferably, the rack comprises:

[0013] A base, which is placed or fixed on the ground, has a first through hole in its middle, allowing the pile to pass through the first through hole and enter the stratum;

[0014] Four guide pillars are mounted on the base and arranged in a rectangular array.

[0015] Preferably, the upper part of the guide post is provided with a threaded section, and the guiding mechanism includes:

[0016] Two fixing plates are fixedly connected to the threaded section on the guide post and are arranged parallel to each other. The middle part of the fixing plates is provided with a second through hole, so that the pile can pass through the second through hole and move to the clamping mechanism.

[0017] Two bidirectional moving components are respectively mounted on two fixed plates, and both bidirectional moving components are located on a horizontal plane and are inclined relative to each other;

[0018] Four rolling elements are arranged in pairs, and the two pairs of rolling elements are respectively installed on the opposite sides of the two bidirectional moving mechanisms to prevent the bidirectional moving components from obstructing the movement of the pile after clamping the pile.

[0019] Preferably, the bidirectional movement component includes:

[0020] Four first fixing blocks are mounted on the fixing plate and arranged opposite to each other in pairs. A first guide rod is provided between two of the first fixing blocks, and a first bidirectional screw corresponding to the first guide rod is provided between the other two first fixing blocks.

[0021] Four first moving blocks are slidably connected to the fixed plate and arranged opposite to each other in pairs. Two of the first moving blocks are slidably connected to the first guide rod, and the other two first moving blocks are engaged with the first bidirectional screw. The rolling element is perpendicular to the first guide rod and rotatably connected between the two first moving blocks.

[0022] The first motor is fixedly connected to the first fixed block and drives the first bidirectional screw. Starting the first motor can drive the first bidirectional screw to rotate, thereby causing the first moving block to drive the two rolling elements to move towards each other.

[0023] Preferably, the clamping mechanism includes:

[0024] Two movable plates are slidably connected to the lower part of the guide post and are arranged parallel to each other. A third through hole is provided in the middle of the plate, so that the pile can pass through the third through hole and move to the first through hole.

[0025] Two bidirectional clamping assemblies are respectively mounted on two movable plates, and both bidirectional clamping assemblies are located on a horizontal plane and have an inclination relative to each other;

[0026] Multiple connectors are provided, with their upper and lower ends respectively connected to two movable plates, for fixing the relative positions of the two movable plates.

[0027] Preferably, the bidirectional clamping assembly includes:

[0028] Four second fixing blocks are mounted on the movable plate and arranged opposite to each other in pairs. A second guide rod is provided between two of the second fixing blocks, and a second bidirectional screw corresponding to the second guide rod is provided between the other two second fixing blocks.

[0029] Two clamping blocks are arranged opposite each other and perpendicular to the second guide rod. The bottom of each clamping block is slidably connected to the moving plate, one end is slidably connected to the second guide rod, and the other end is engaged with the second bidirectional screw.

[0030] The second motor is fixedly connected to the second fixed block and drives the second bidirectional screw. Starting the second motor can drive the second bidirectional screw to rotate, thereby causing the two clamping blocks to move towards each other along the second guide rod.

[0031] Preferably, the clamping surfaces of the two clamping blocks are provided with vertical V-shaped grooves, which can increase the contact area between the pile and the clamping blocks.

[0032] Preferably, the lifting mechanism includes:

[0033] A support frame is mounted on the frame.

[0034] A hydraulic cylinder is mounted on the bracket and drives the clamping mechanism.

[0035] Preferably, the system further includes multiple extension components, which are detachably connected to the frame and detachably connected to each other. Counterweights can be placed on the extension components for counterweighting the frame.

[0036] Preferably, the extension component includes:

[0037] An extension plate, the extension plate being used to place a counterweight and having a rectangular cross-section;

[0038] Multiple plug-in rods are provided on one side or adjacent sides of the extension plate;

[0039] Multiple insertion holes are provided on the sides of the frame and the extension plate and are arranged corresponding to the insertion rods, so that the insertion rods can be inserted into the insertion holes, thereby connecting the extension plate to the frame or connecting different extension plates to each other.

[0040] (III) Beneficial Effects

[0041] Compared with the prior art, the beneficial effects of the present invention are:

[0042] In practical use, the frame is moved to the designated position, and then the pile is lifted by the crane and moved directly above the frame. When the crane lowers the pile, the bottom of the pile first passes through the guide mechanism, which guides the pile as it moves downward. The guide mechanism helps the pile become vertical and aligns it more quickly with the clamping mechanism. After the pile reaches the designated position, the clamping mechanism clamps and fixes the pile. At this point, the pile can be separated from the crane. Then, the lifting mechanism is activated, driving the clamping mechanism to move vertically downward along the frame, thus pressing the clamped pile into the ground. After the clamping mechanism moves downward to the designated or extreme position, the pile is released, and the lifting mechanism resets the clamping mechanism. This process is repeated to complete the pile driving operation. Conversely, if the clamping mechanism releases the pile when the lifting mechanism moves downward and clamps the pile when the lifting mechanism moves upward, the pile can be extracted. In summary, by using this pile driver, the pile can be guided and positioned directly during the crane's lowering process. Attached Figure Description

[0043] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0044] Figure 1 A schematic diagram of the overall structure of the pile driver in this invention is shown. Figure 1 ;

[0045] Figure 2 A schematic diagram of the overall structure of the pile driver in this invention is shown. Figure 2 ;

[0046] Figure 3 A partial structural schematic diagram of the pile driver in this invention is shown;

[0047] Figure 4 A schematic diagram of the frame and lifting mechanism in this invention is shown;

[0048] Figure 5 A schematic diagram of the guiding mechanism in this invention is shown. Figure 1 ;

[0049] Figure 6 A schematic diagram of the guiding mechanism in this invention is shown. Figure 2 ;

[0050] Figure 7 A schematic diagram of the clamping mechanism in this invention is shown. Figure 1 ;

[0051] Figure 8 A schematic diagram of the clamping mechanism in this invention is shown. Figure 2 ;

[0052] Figure 9 A schematic diagram of the connector structure in this invention is shown;

[0053] Figure 10 A schematic diagram of the extension component in this invention is shown.

[0054] In the diagram: 1. Frame; 11. Base; 12. First through hole; 13. Guide post; 2. Guide mechanism; 21. Fixing plate; 22. Second through hole; 23. Bidirectional moving assembly; 231. First fixing block; 232. First guide rod; 233. First bidirectional screw; 234. First moving block; 235. First motor; 24. Rolling element; 3. Clamping mechanism; 31. Moving plate; 32. Third through hole; 33. Bidirectional clamping assembly; 331. Second fixing block; 332. Second guide rod; 333. Second bidirectional screw; 334. Clamping block; 335. Second motor; 34. Connecting element; 4. Lifting mechanism; 41. Bracket; 42. Hydraulic cylinder; 5. Extension assembly; 51. Extension plate; 52. Insertion rod; 53. Insertion hole; 6. Counterweight. Detailed Implementation

[0055] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] See appendix Figure 1 - Appendix Figure 10This invention discloses a pile driver, used in conjunction with a crane, which can press piles into the ground through pressure. It includes a vertically arranged frame 1 for support and fixation; it also includes a guide mechanism 2, a clamping mechanism 3, and a lifting mechanism 4. The guide mechanism 2 is installed on the upper part of the frame 1 and guides the piles lifted by the crane; the clamping mechanism 3 is slidably connected to the lower part of the frame 1 and is arranged corresponding to the guide mechanism 2, used to clamp and fix the piles passing through the guide mechanism 2; the lifting mechanism 4 is installed on the frame 1 and drives the clamping mechanism 3, so that the lifting mechanism 4 can drive the clamping mechanism 3 to move vertically along the frame 1, thereby completing the pile driving or extraction operation.

[0057] In actual use, the frame 1 is moved to the designated position, and then the pile is lifted by the crane and moved directly above the frame 1. When the crane lowers the pile, the bottom of the pile will first pass through the guide mechanism 2, which guides the pile as it moves downward. The guide mechanism 2 helps the pile become vertical and aligns it more quickly with the clamping mechanism 3. After the pile moves to the designated position, the clamping mechanism 3 clamps and fixes the pile. At this point, the pile can be separated from the crane. Then, the lifting mechanism 4 is activated, driving the clamping mechanism 3 to move vertically downward along the frame 1, thus pressing the pile clamped and fixed by the clamping mechanism 3 into the ground. After the clamping mechanism 3 moves downward to the designated or extreme position, the pile is released and the clamping mechanism 3 is reset by the lifting mechanism 4. The above process is repeated to complete the pile driving operation. Conversely, if the clamping mechanism 3 releases the pile when the lifting mechanism 4 moves downward and clamps the pile when the lifting mechanism 4 moves upward, the pile can be pulled out. In general, by using this pile driver, the pile can be guided and positioned directly during the process of the crane lowering the pile.

[0058] Based on the above scheme, the structure of the frame 1 in this embodiment is designed as follows: Specifically, the frame 1 includes a base 11 and four guide columns 13. The base 11 is placed or fixed on the ground, and a first through hole 12 is provided in the middle so that the pile can pass through the first through hole 12 and enter the stratum. The four guide columns 13 are installed on the base 11 and arranged in a rectangular array.

[0059] With the above structural design, heavy objects can be placed directly on the base 11 to maintain the stability of the pile driver during operation; alternatively, holes and slots can be opened on the base 11, and then fitted onto pre-set bolts fixed to the ground and secured with nuts, which can also meet the requirements for the stability of the pile driver during operation; the guide column 13 can not only install other components, but also guide the movement of the clamping mechanism 3; finally, the first through hole 12 is to enable the pile to be driven into the stratum.

[0060] See appendix Figure 5 and attached Figure 6The simplest guiding mechanism consists only of inclined plates, but this is obviously not suitable for this pile driver. Therefore, conventional guiding mechanisms cannot meet the requirements of this invention. Thus, the following design is made in this embodiment: Specifically, the upper part of the guide post 13 is provided with a threaded section. The guiding mechanism 2 includes two fixed plates 21, two bidirectional moving components 23, and four rolling elements 24. The two fixed plates 21 are fixedly connected to the threaded section on the guide post 13 and are arranged parallel to each other. The middle part is provided with a second through hole 22, so that the pile can pass through the second through hole 22 and move to the clamping mechanism 3. The two bidirectional moving components 23 are respectively installed on the two fixed plates 21. The two bidirectional moving components 23 are both located on the horizontal plane and are inclined to each other. The four rolling elements 24 are grouped in pairs. The two groups of rolling elements 24 are respectively installed on the opposite sides of the two bidirectional moving components 23 to prevent the bidirectional moving components 23 from obstructing the movement of the pile after clamping the pile.

[0061] With the design of the above structure, when the crane lowers the pile, the bottom of the pile is first passed through the larger second through hole 22. Even if the pile shakes continuously, it will not affect the guidance during the lowering process. Then, the bidirectional moving assembly 23 between the fixed plates 21 is activated, so that the two rolling parts 24 move towards each other until they abut the pile. Since the rolling parts 24 can roll on their own, they will not obstruct the lowering of the pile. The two bidirectional moving assemblies 23 are both located on the horizontal plane and have an inclination relative to each other. Therefore, the position of the pile on the horizontal plane can be limited, so that the pile can only move in the vertical direction, thereby completing the guidance operation during the lowering process of the pile.

[0062] Furthermore, the two fixing plates 21 can be fixed to the guide post 13 respectively, or the two fixing plates 21 can be connected and fixed together, and then fixed to the guide post 13 as a whole.

[0063] There are various structures capable of bidirectional movement. This embodiment describes one such structure. Specifically, the bidirectional movement component 23 includes four first fixed blocks 231, four first moving blocks 234, and a first motor 235. The four first fixed blocks 231 are mounted on the fixed plate 21 and arranged opposite each other in pairs. A first guide rod 232 is provided between two first fixed blocks 231, and a first bidirectional screw 233 corresponding to the first guide rod 232 is provided between the other two first fixed blocks 21. The four first moving blocks 234 are slidably connected to the fixed plate 21 and... The components are arranged in pairs facing each other. Two first moving blocks 234 are slidably connected to the first guide rod 232, and the other two first moving blocks 234 are engaged with the first bidirectional screw 233. The rolling element 24 is perpendicular to the first guide rod 232 and rotatably connected between the two first moving blocks 234. The first motor 235 is fixedly connected to the first fixed block 231 and drives the first bidirectional screw 233. When the first motor 235 is started, the first bidirectional screw 233 can be driven to rotate, thereby causing the first moving blocks 234 to drive the two rolling elements 24 to move towards each other.

[0064] With the above structural design, when the first motor 235 is started, the first bidirectional screw 233 between the first fixed blocks 231 will rotate accordingly, thereby driving the rolling elements 24 between the first moving blocks 234 to move towards each other along the first guide rod 232, which can clamp and position the pile, without affecting the downward movement of the pile.

[0065] See appendix Figure 7 - Appendix Figure 9 To achieve the clamping and fixing of the pile, the following design is implemented in this embodiment. Specifically, the clamping mechanism 3 includes two movable plates 31, two bidirectional clamping components 33, and multiple connecting pieces 34. The two movable plates 31 are slidably connected to the lower part of the guide column and are arranged parallel to each other. The middle part is provided with a third through hole 32, so that the pile can pass through the third through hole 32 and move to the first through hole 12. The two bidirectional clamping components 33 are respectively installed on the two movable plates 31. The two bidirectional clamping components 32 are both located on the horizontal plane and have an inclination relative to each other. The upper and lower ends of the multiple connecting pieces 34 are respectively connected to the two movable plates 31 to fix the relative position of the two movable plates 31.

[0066] Based on the above scheme, in actual use, the two moving plates 31 are connected by the connector 34 and slidably connected to the lower part of the guide column 13. Then, the above structure is connected to the lifting mechanism 4. When the pile passes through the third through hole 32, the pile can be clamped and fixed by the bidirectional clamping component 33. At this time, the pile can be separated from the crane, and then the pile can be indirectly moved by the lifting mechanism 4.

[0067] To ensure the pile can be clamped and fixed, the following design is implemented in this embodiment. Specifically, the bidirectional clamping assembly 33 includes four second fixing blocks 331, two clamping blocks 334, and a second motor 335. The four second fixing blocks 331 are mounted on the moving plate 31 and arranged opposite each other in pairs. A second guide rod 332 is provided between two second fixing blocks 331, and a second bidirectional screw 333 corresponding to the second guide rod 332 is provided between the other two second fixing blocks 331. The two clamping blocks 334 are arranged opposite each other and perpendicular to the second guide rod 332. The bottom of the clamping block 334 is slidably connected to the moving plate 31, one end is slidably connected to the second guide rod 332, and the other end is engaged with the second bidirectional screw 333. The second motor 335 is fixedly connected to the second fixing blocks 331 and drives the second bidirectional screw 333. Starting the second motor 335 can drive the second bidirectional screw 333 to rotate, thereby causing the two clamping blocks 334 to move towards each other along the second guide rod 332.

[0068] With the above structural design, when the second motor 335 is started, the second bidirectional screw 333 between the second fixing blocks 331 will rotate accordingly, thereby driving the clamping block 334 to move towards each other along the second guide rod 332, which can clamp and fix the pile, so that the clamping mechanism 3 can drive the pile to move at the same time when it moves along the frame 2.

[0069] The cross-section of the pile has shapes such as circular and rectangular. In order to clamp and hold more types of piles, the following design is made in this embodiment. Specifically, the clamping surfaces of the two clamping blocks 334 are provided with vertical V-shaped grooves, which can increase the contact surface between the pile and the clamping blocks 334. Through the above structural design, it can be effectively ensured that the pile will not slip or misalign after being clamped.

[0070] See appendix Figure 1 - Appendix Figure 4 In order to drive the clamping mechanism 3 to move up and down, the following design is made in this embodiment. Specifically, the lifting mechanism 4 includes a bracket 41 and a hydraulic cylinder 42. The bracket 41 is mounted on the frame 1. The hydraulic cylinder 42 is mounted on the bracket 41 and drives the clamping mechanism 3. With the above structural design, when the hydraulic cylinder 42 on the bracket 41 is activated, the clamping mechanism 3 moves down when the hydraulic cylinder 42 extends, and the pile driving operation can be performed. When the hydraulic cylinder 42 shortens, the clamping mechanism 3 moves up, and the pile pulling operation can be performed.

[0071] See appendix Figure 1 and attached Figure 10During pile driving, workers often place many heavy objects, such as counterweights, on the pile driving equipment to increase its stability. However, these heavy objects can only be placed on a fixed and limited area of ​​the pile driving equipment, thus limiting the number and weight of objects that can be placed and making it impossible to use them flexibly according to actual conditions. To solve the above problems, this embodiment incorporates the following design: Specifically, it also includes multiple extension components 5, which are detachably connected to the frame 1 and detachably connected to each other. Counterweights 6 can be placed on the extension components for counterweighting the frame. Through the design of the above structure, the overall area of ​​the pile driving machine can be increased by cooperating with the extension components 5, thereby improving the number and weight of objects that can be placed on the pile driving machine.

[0072] Based on the above scheme, the structure of the extension component 5 in this embodiment is designed as follows: Specifically, the extension component 5 includes an extension plate 51, multiple plug-in rods 52, and multiple plug-in holes 53. The extension plate 51 is used to place the counterweight 6 and its cross-section is rectangular. The multiple plug-in rods 52 are arranged on one side or adjacent sides of the extension plate 51. The multiple plug-in holes 53 are arranged on the sides of the frame 1 and the extension plate 51 and are arranged corresponding to the plug-in rods 52, so that the plug-in rods 52 can be inserted into the plug-in holes 53, thereby connecting the extension plate 51 to the frame 1 or connecting different extension plates 51 to each other.

[0073] Through the cooperation of the plug rod 52 and the plug hole 53 in the above structure, the extension plate 51 can be directly connected to the frame 1 by plugging and unplugging, and different extension plates 51 can be connected to each other by plugging and unplugging, thereby expanding the placement area of ​​the pile driver and allowing more counterweights 6 or other heavy objects to be placed, ultimately enhancing the working stability of the pile driver.

[0074] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0075] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0076] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pile driver, used in conjunction with a crane, for pressing piles into the ground using pressure, comprising a vertically mounted frame for support and fixation; characterized in that... Also includes: A guiding mechanism, installed on the upper part of the frame, can guide the piles lifted by the crane; A clamping mechanism is slidably connected to the lower part of the frame and is provided corresponding to the guide mechanism for clamping and fixing the pile passing through the guide mechanism; A lifting mechanism is installed on the frame and driven to connect to the clamping mechanism, so that the lifting mechanism can drive the clamping mechanism to move vertically along the frame, thereby completing the pile driving or pile extraction operation. The frame includes: a base, which is placed or fixed on the ground and has a first through hole in its middle, allowing the pile to pass through the first through hole and enter the stratum; and four guide columns, which are installed on the base and arranged in a rectangular array. The guide post has a threaded section at its upper part. The guiding mechanism includes: two fixed plates, both of which are fixedly connected to the threaded section on the guide post and are arranged parallel to each other. The middle of each plate has a second through hole, allowing the pile to pass through the second through hole and move to the clamping mechanism; two bidirectional moving components, which are respectively mounted on the two fixed plates. The two bidirectional moving components are both located on a horizontal plane and are inclined relative to each other; and four rolling elements, which are grouped in pairs. The two groups of rolling elements are respectively mounted on the opposite sides of the two bidirectional moving mechanisms to prevent the bidirectional moving components from obstructing the movement of the pile after clamping it. The bidirectional moving assembly includes: four first fixed blocks, which are mounted on the fixed plate and arranged opposite each other in pairs, wherein a first guide rod is provided between two of the first fixed blocks, and a first bidirectional screw corresponding to the first guide rod is provided between the other two first fixed blocks; four first moving blocks, which are slidably connected to the fixed plate and arranged opposite each other in pairs, wherein two of the first moving blocks are slidably connected to the first guide rod, and the other two first moving blocks are engaged with the first bidirectional screw; the rolling element is perpendicular to the first guide rod and rotatably connected between the two first moving blocks; and a first motor, which is fixedly connected to the first fixed blocks and drives the first bidirectional screw. Starting the first motor can drive the first bidirectional screw to rotate, thereby causing the first moving blocks to drive the two rolling elements to move towards each other.

2. A pile driver according to claim 1, characterized in that, The clamping mechanism includes: Two movable plates are slidably connected to the lower part of the guide post and are arranged parallel to each other. A third through hole is provided in the middle of the plate, so that the pile can pass through the third through hole and move to the first through hole. Two bidirectional clamping assemblies are respectively mounted on two movable plates, and both bidirectional clamping assemblies are located on a horizontal plane and have an inclination relative to each other; Multiple connectors are provided, with their upper and lower ends respectively connected to two movable plates, for fixing the relative positions of the two movable plates.

3. A pile driver according to claim 2, characterized in that, The bidirectional clamping assembly includes: Four second fixing blocks are mounted on the movable plate and arranged opposite to each other in pairs. A second guide rod is provided between two of the second fixing blocks, and a second bidirectional screw corresponding to the second guide rod is provided between the other two second fixing blocks. Two clamping blocks are arranged opposite each other and perpendicular to the second guide rod. The bottom of each clamping block is slidably connected to the moving plate, one end is slidably connected to the second guide rod, and the other end is engaged with the second bidirectional screw. The second motor is fixedly connected to the second fixed block and drives the second bidirectional screw. Starting the second motor can drive the second bidirectional screw to rotate, thereby causing the two clamping blocks to move towards each other along the second guide rod.

4. A pile driver according to claim 3, characterized in that, Vertical V-grooves are provided on the clamping surfaces of the two clamping blocks facing each other, which can increase the contact area between the pile and the clamping blocks.

5. A pile driver according to claim 1, characterized in that, The lifting mechanism includes: A support frame is mounted on the frame. A hydraulic cylinder is mounted on the bracket and drives the clamping mechanism.

6. A pile driver according to any one of claims 1-5, characterized in that, It also includes multiple extension components, which are detachably connected to the frame and detachably connected to each other. Counterweights can be placed on the extension components for counterweighting the frame.

7. A pile driver according to claim 6, characterized in that, The extension component includes: An extension plate, the extension plate being used to place a counterweight and having a rectangular cross-section; Multiple plug-in rods are provided on one side or adjacent sides of the extension plate; Multiple insertion holes are provided on the sides of the frame and the extension plate and are provided corresponding to the insertion rods, so that the insertion rods can be inserted into the insertion holes, thereby connecting the extension plate to the frame or connecting different extension plates to each other.

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