A small-diameter water conservancy pile extraction device
By using a servo motor to drive the screw rod and a bidirectional threaded rod, the mechanical automation of small-diameter hydraulic piles is achieved, solving the problems of low efficiency and poor safety of traditional demolition methods. This improves demolition efficiency and versatility, and reduces labor intensity and equipment replacement costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI MINGTONG ELECTROMECHANICAL TECH CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-21
AI Technical Summary
The existing small-diameter hydraulic pile removal is inefficient. Traditional methods are time-consuming, labor-intensive, and pose safety hazards. Existing devices lack pipe diameter adjustment functions, making it difficult to adapt to small-diameter piles of different sizes, resulting in frequent equipment replacements and increased costs.
A servo motor drives the screw rod to rotate, which in turn moves the reinforcing connecting block up and down along the screw rod. The connecting frame slides within the limiting slide, and the clamping pile structure achieves positioning and gripping. The bidirectional threaded rod drives the clamping assembly to adapt to different pipe diameters. Combined with the arc-shaped pile clamping plate and anti-slip pads, it ensures stable gripping.
It achieves automated mechanical dismantling, avoids dust and noise pollution, improves dismantling efficiency, enhances the stability and versatility of the equipment, and reduces equipment replacement time and costs.
Smart Images

Figure CN224531665U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic pile extraction technology, and in particular to a small-diameter hydraulic pile extraction device. Background Technology
[0002] In projects such as cofferdams and temporary water-retaining structures, small-diameter pile foundations are often chosen to achieve rapid construction. After the completion of these projects, the pile foundations need to be removed to restore the navigation or ecological functions of the river. However, the removal work currently faces two major challenges. On the one hand, traditional methods such as manual chiseling or using pneumatic picks for breaking are not only inefficient and time-consuming, but also pose safety hazards such as dust pollution, noise pollution, and mechanical injuries. On the other hand, most of the existing removal devices are designed for specific pipe diameters and lack pipe diameter adjustment functions, making it difficult to adapt to small-diameter piles of different sizes. This leads to frequent equipment replacements during the project, further reducing construction efficiency and increasing costs. Utility Model Content
[0003] The main purpose of this utility model is to provide a small-diameter hydraulic pile extraction device, which can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A device for removing small-diameter hydraulic piles includes a reinforced movable base. The upper end of the reinforced movable base is threaded with fastening nails around its perimeter. A through-hole for placing the hydraulic pile is opened on the upper left side of the reinforced movable base. A mounting frame is fixedly connected to the upper right side of the reinforced movable base. A control key is provided on the upper right side of the mounting frame. A push handle is fixedly connected to the upper right side of the mounting frame, located below the control key. Limiting sliding openings are opened at both the front and rear ends of the mounting frame. A pile removal device is fixedly connected to the upper end of the mounting frame. Preferably, the pile extraction device includes a servo motor, which is fixedly connected to the upper end of the mounting and reinforcing frame. The output end of the servo motor passes through the middle of the upper end of the mounting and reinforcing frame and is fixedly connected to a screw rod. A reinforcing connecting block is movably connected to the lower part of the outer surface of the screw rod. A connecting frame is fixedly connected to the left front end and the left rear end of the reinforcing connecting block. A pile clamping structure is fixedly connected to the left end of the reinforcing connecting block.
[0005] By adopting the above technical solution: the servo motor drives the screw rod to rotate, which in turn moves the reinforcing connecting block up and down along the rod. The connecting frame and the clamping pile structure move accordingly, thereby achieving the positioning and gripping of the pile, which facilitates subsequent removal operations and improves demolition efficiency.
[0006] Preferably, the right end face of the reinforcing connecting block is in close contact with the left end face of the mounting reinforcement frame.
[0007] By adopting the above technical solution, the right end face of the reinforcing connecting block is tightly attached to the installation and reinforcing frame, ensuring its stability during up and down movement, preventing shaking, ensuring the gripping accuracy of the clamping pile structure on the pile, and enhancing the operational reliability of the device.
[0008] Preferably, the ends of the two connecting brackets furthest from the reinforcing connecting block are slidably connected within two limiting sliding openings.
[0009] By adopting the above technical solution, the two ends of the connecting frame slide within the limiting sliding opening, restricting the movement direction of the reinforcing connecting block, ensuring that the clamping pile structure rises and falls smoothly in the vertical direction, avoiding deviation, and improving the accuracy of the device's operation on the pile.
[0010] Preferably, the clamping pile structure includes a reinforcing bracket, the upper middle part of which has a through rectangular sliding opening, the front end of which is fixedly connected to a driver, the output end of which passes through the middle of the front end of the reinforcing bracket and is fixedly connected to a bidirectional threaded rod, the rear end of which is movably connected to the reinforcing bracket via a bearing, and the front and rear parts of the outer surface of the bidirectional threaded rod are both threadedly connected to clamping components.
[0011] By adopting the above technical solution: the driver drives the bidirectional threaded rod to rotate, causing the clamping assembly to move along the rod in opposite directions, thereby clamping and releasing the pile body. This can be adapted to pile bodies of different diameters, enhancing the versatility and practicality of the device.
[0012] Preferably, the middle of the right end of the reinforcing bracket is fixedly connected to the reinforcing connecting block.
[0013] By adopting the above technical solution, the right end of the reinforcement bracket is fixed to the reinforcement connecting block, providing an installation foundation and support for the clamping pile structure, ensuring the stable operation of the driver, bidirectional threaded rod and clamping assembly, and ensuring the reliable execution of the clamping action.
[0014] Preferably, the clamping assembly includes a reinforcing block, the front end of which has a through screw hole, a double-headed fixing rod is fixedly connected to the left side of the outer surface of the reinforcing block, an arc-shaped clamping plate is fixedly connected to the rear end of the double-headed fixing rod, and an anti-slip pad is fixedly connected to the inner wall of the arc-shaped clamping plate.
[0015] By adopting the above technical solution: when the bidirectional threaded rod rotates, the reinforcing block moves along the rod through the threaded hole, which drives the arc-shaped pile clamping plate to clamp the pile body. The anti-slip pad increases the friction and prevents the pile body from slipping, thus achieving stable gripping and facilitating dismantling.
[0016] Preferably, the two clamping components are arranged in a front-to-back mirror image, the reinforcing block is movably connected to the bidirectional threaded rod through a screw hole, and the upper end of the reinforcing block is movably connected to the rectangular sliding opening.
[0017] By adopting the above technical solution: the clamping components distributed in front and back, in conjunction with the synchronous movement of the bidirectional threaded rod, can uniformly clamp the pile body, adapt to different pipe diameters, and the rectangular sliding mouth restricts the movement direction of the reinforcing block, ensuring accurate and stable clamping action.
[0018] Preferably, the hydraulic pile placement opening is located directly below and between the two arc-shaped pile clamping plates.
[0019] By adopting the above technical solution, the placement opening of the hydraulic pile is located directly below the two arc-shaped pile clamping plates, providing precise positioning for the pile body, facilitating accurate clamping of the pile body structure, ensuring the fixed position of the pile body during the demolition process, and improving demolition efficiency and safety.
[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. In this utility model, a servo motor drives the screw rod to rotate, causing the reinforcing connecting block to move up and down along the screw rod. The connecting frame slides and guides within the limiting slide, ensuring the stable lifting and lowering of the clamped pile structure. This design replaces traditional manual demolition with mechanical automation, avoiding safety hazards such as dust, noise pollution, and mechanical injury, and significantly reducing labor intensity. At the same time, the precise control of vertical lifting enables the device to quickly position the pile, improving demolition efficiency. The structural design of the reinforcing connecting block and the installation reinforcing frame being in close contact, and the connecting frame cooperating with the limiting slide, enhances the stability of the device's operation, ensuring reliable execution of the clamping action. This provides a stable mechanical foundation for subsequent pile gripping and demolition, effectively solving the problems of low efficiency and poor safety in traditional demolition methods.
[0021] 2. In this utility model, the bidirectional threaded rod is driven to rotate by the driver, causing the two clamping components to move in opposite directions along the rod, thereby achieving adaptive clamping for hydraulic piles of different diameters. The arc-shaped clamping plate, in conjunction with the anti-slip pad on the inner wall, can firmly grip the pile body and prevent it from slipping during dismantling. The rectangular sliding opening and the reinforcement block work together to restrict the movement direction of the components, ensuring that the clamping action is smooth and precise. The reinforcement bracket provides stable support for each component, ensuring the reliable operation of the overall structure. Thus, this structure can adapt to various pipe diameters without replacing the equipment, reducing construction costs and equipment replacement time, and significantly improving the versatility and work efficiency of hydraulic pile dismantling operations. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of a small-diameter hydraulic pile extraction device according to the present invention; Figure 2 This is a schematic diagram of the overall structure of the pile extraction device of the small-diameter hydraulic pile extraction device of this utility model; Figure 3 This is a schematic diagram of the overall structure of the clamping pile body of the small-diameter hydraulic pile extraction device of this utility model; Figure 4This is a schematic diagram of the overall structure of the clamping assembly of a small-diameter hydraulic pile extraction device according to this utility model.
[0023] In the diagram: 1. Reinforced mobile base; 2. Fastening ground nail; 3. Hydraulic pile placement port; 4. Installation reinforcement frame; 5. Control key; 6. Push handle; 7. Limiting slide; 8. Pile removal device; 81. Servo motor; 82. Screw rod; 83. Reinforcement connecting block; 84. Connecting frame; 85. Pile clamping structure; 851. Reinforcement bracket; 852. Rectangular slide; 853. Driver; 854. Bidirectional threaded rod; 855. Clamping assembly; 8551. Reinforcement block; 8552. Screw hole; 8553. Double-headed fixing rod; 8554. Arc-shaped pile clamping plate; 8555. Anti-slip pad. Detailed Implementation
[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] Please see Figure 1-4 This utility model provides a technical solution: A device for removing small-diameter hydraulic piles includes a reinforced movable base 1. The upper end of the reinforced movable base 1 is threaded with fastening nails 2 around its perimeter. A through-hole for placing hydraulic piles 3 is opened on the upper left side of the reinforced movable base 1. A mounting frame 4 is fixedly connected to the upper right side of the reinforced movable base 1. A control key 5 is provided on the upper right side of the mounting frame 4. A push handle 6 is fixedly connected to the upper right side of the mounting frame 4, located below the control key 5. Limiting sliding openings 7 are opened at both the front and rear ends of the mounting frame 4. A pile removal device 8 is fixedly connected to the upper end of the mounting frame 4.
[0028] In this embodiment, the pile removal device 8 includes a servo motor 81, which is fixedly connected to the upper end of the mounting reinforcement frame 4. The output end of the servo motor 81 passes through the middle of the upper end of the mounting reinforcement frame 4 and is fixedly connected to a screw rod 82. A reinforcement connecting block 83 is threadedly connected to the lower part of the outer surface of the screw rod 82. A connecting frame 84 is fixedly connected to the left front end and the left rear end of the reinforcement connecting block 83. A pile clamping structure 85 is fixedly connected to the left end of the reinforcement connecting block 83. The right end face of the reinforcement connecting block 83 is in close contact with the left end face of the mounting reinforcement frame 4. The ends of the two connecting frames 84 away from the reinforcement connecting block 83 are respectively located in the two limiting sliding ports 7 and are slidably connected.
[0029] Through the above scheme: the servo motor 81 is fixed to the upper end of the mounting reinforcement frame 4. After starting, it drives the screw rod 82 to rotate. Through the threaded transmission, the reinforcement connecting block 83 moves up and down along the screw rod 82. Its right end face is in close contact with the left end face of the mounting reinforcement frame 4 to ensure stability. The reinforcement connecting block 83 drives the connecting frame 84 to slide within the limit sliding port 7, realizing the vertical lifting control of the clamped pile structure 85. Compared with the traditional manual or pneumatic hammer demolition method, this device avoids direct contact between personnel and demolition operations through mechanical automation, eliminating the hidden dangers of dust, noise and mechanical injury. At the same time, it can quickly and accurately grab and demolish the pile, greatly improving construction efficiency and reducing the intensity of manual labor.
[0030] In this embodiment, the clamping pile structure 85 includes a reinforcing bracket 851. A rectangular sliding opening 852 is formed at the center of the upper end of the reinforcing bracket 851. A driver 853 is fixedly connected to the front end of the reinforcing bracket 851. The output end of the driver 853 passes through the center of the front end of the reinforcing bracket 851 and is fixedly connected to a bidirectional threaded rod 854. The rear end of the bidirectional threaded rod 854 is movably connected to the reinforcing bracket 851 via a bearing. A clamping assembly 855 is threadedly movably connected to both the front and rear parts of the outer surface of the bidirectional threaded rod 854. The center of the right end of the reinforcing bracket 851 is fixedly connected to a reinforcing connecting block 83. The clamping assembly 855 includes a reinforcing block. 8551, the front end of the reinforcing block 8551 is provided with a through screw hole 8552, the left side of the outer surface of the reinforcing block 8551 is fixedly connected with a double-headed fixing rod 8553, the rear end of the double-headed fixing rod 8553 is fixedly connected with an arc-shaped pile clamping plate 8554, the inner wall of the arc-shaped pile clamping plate 8554 is fixedly connected with an anti-slip pad 8555, the two clamping components 855 are distributed in a front-to-back mirror image, the reinforcing block 8551 is movably connected to the bidirectional threaded rod 854 through the screw hole 8552, the upper end of the reinforcing block 8551 is movably connected to the rectangular sliding mouth 852, and the hydraulic pile placement port 3 is located between the two arc-shaped pile clamping plates 8554 directly below.
[0031] Through the above scheme: the driver 853 drives the bidirectional threaded rod 854 to rotate. Since the reinforcing blocks 8551 of the two clamping components 855 are threadedly connected to the bidirectional threaded rod 854 through the screw holes 8552 and the upper end moves within the rectangular sliding opening 852, they can move in opposite directions along the rod. The arc-shaped pile clamping plate 8554, together with the anti-slip pad 8555, can adjust the clamping distance according to the diameter of the pile. The reinforcing bracket 851 is fixed with the reinforcing connecting block 83 to ensure overall stability. Therefore, this device can adapt to small-diameter piles of different pipe diameters without replacing the equipment, reducing equipment replacement costs and time, improving construction efficiency, and effectively solving the problem of poor pipe diameter adaptability of traditional devices.
[0032] It should be noted that this utility model is a small-diameter hydraulic pile extraction device. During use, firstly, the reinforced movable base 1 is fixed to the ground using the ground nails 2 to ensure stability. The hydraulic pile placement opening 3 is aligned with the pile to be removed. The control key 5 starts the servo motor 81, which drives the screw rod 82 to rotate, causing the threaded reinforced connecting block 83 to move vertically along the screw rod 82. The connecting frame 84 slides within the limiting slide 7, guiding the clamping pile structure 85 down to the pile position. Subsequently, the driver 853 drives the bidirectional threaded rod 854. Rotation causes the reinforcing blocks 8551 of the two clamping components 855 to move towards each other on the bidirectional threaded rod 854 through the screw holes 8552, driving the arc-shaped pile clamping plate 8554 to clamp the pile body in conjunction with the anti-slip pad 8555. Finally, the servo motor 81 reverses and pulls the clamped pile body upward. Therefore, this device replaces manual demolition through mechanical automation, reducing labor intensity and safety hazards. The adjustable design of the pile clamping structure 85 is suitable for pile foundations with different pipe diameters, reducing equipment replacement costs and improving the efficiency, safety and economy of demolishing small-diameter hydraulic piles.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A device for removing small-diameter hydraulic piles, comprising a reinforced movable base (1), characterized in that: The upper end of the reinforced mobile base (1) is threaded with fastening nails (2) around its perimeter. The upper left side of the reinforced mobile base (1) has a through-hole for placing hydraulic piles (3). The upper right side of the reinforced mobile base (1) is fixedly connected to a mounting frame (4). The upper right side of the mounting frame (4) is provided with a control key (5). The upper right side of the mounting frame (4) is fixedly connected with a push handle (6). The push handle (6) is located below the control key (5). The front and rear ends of the mounting frame (4) are both provided with limit sliding openings (7). The upper end of the mounting frame (4) is fixedly connected with a pile removal device (8). The pile extraction device (8) includes a servo motor (81), which is fixedly connected to the upper end of the mounting reinforcement frame (4). The output end of the servo motor (81) passes through the middle of the upper end of the mounting reinforcement frame (4) and is fixedly connected to a screw rod (82). A reinforcement connecting block (83) is threadedly connected to the lower part of the outer surface of the screw rod (82). A connecting frame (84) is fixedly connected to the left front end and the left rear end of the reinforcement connecting block (83). A pile clamping structure (85) is fixedly connected to the left end of the reinforcement connecting block (83).
2. The small-diameter hydraulic pile extraction device according to claim 1, characterized in that: The right end face of the reinforcing connecting block (83) is in close contact with the left end face of the mounting reinforcement frame (4).
3. The small-diameter hydraulic pile extraction device according to claim 1, characterized in that: The ends of the two connecting brackets (84) away from the reinforcing connecting block (83) are respectively located in the two limiting sliding ports (7) for sliding connection.
4. The small-diameter hydraulic pile extraction device according to claim 1, characterized in that: The clamping pile structure (85) includes a reinforcing bracket (851). A rectangular sliding opening (852) is opened in the middle of the upper end of the reinforcing bracket (851). A driver (853) is fixedly connected to the front end of the reinforcing bracket (851). The output end of the driver (853) passes through the middle of the front end of the reinforcing bracket (851) and is fixedly connected to a bidirectional threaded rod (854). The rear end of the bidirectional threaded rod (854) is movably connected to the reinforcing bracket (851) through a bearing. A clamping assembly (855) is threadedly movably connected to both the front and rear parts of the outer surface of the bidirectional threaded rod (854).
5. The small-diameter hydraulic pile extraction device according to claim 4, characterized in that: The right end of the reinforcing bracket (851) is fixedly connected to the reinforcing connecting block (83).
6. The small-diameter hydraulic pile extraction device according to claim 4, characterized in that: The clamping assembly (855) includes a reinforcing block (8551), the front end of which is provided with a through screw hole (8552), a double-headed fixing rod (8553) is fixedly connected to the left side of the outer surface of the reinforcing block (8551), an arc-shaped clamping plate (8554) is fixedly connected to the rear end of the double-headed fixing rod (8553), and an anti-slip pad (8555) is fixedly connected to the inner wall of the arc-shaped clamping plate (8554).
7. The small-diameter hydraulic pile extraction device according to claim 6, characterized in that: The two clamping assemblies (855) are arranged in a front-to-back mirror image. The reinforcing block (8551) is movably connected to the bidirectional threaded rod (854) through the screw hole (8552). The upper end of the reinforcing block (8551) is movably connected to the rectangular sliding mouth (852).
8. The small-diameter hydraulic pile extraction device according to claim 1, characterized in that: The hydraulic pile placement opening (3) is located directly below the two arc-shaped pile clamping plates (8554).