A quick pile pulling device

Abstract

The utility model discloses a quick pile pulling device for setting on steel pile, including with the detachable connection of steel pile's upper part and insert board, steel pile includes the lower part of driving into the earth body and the upper part of exposing on the ground, and the upper part structure has the through -hole in steel pile, the one side of insert board's board body is provided with the insert rod, the insert rod is suitable for inserting the through -hole of the structure of steel column, the end of insert board is provided with the lifting lug, and the lifting lug is suitable for through the cable. Therefore, the device solves the problem that the traditional pile pulling method is difficult to pull out, for example, the traditional method lacks a stress point by binding the steel pile, or it is difficult to fix and easy to slip when the cable is directly inserted through the through hole of the steel pile; the device can provide a stable connection point through the lifting lug, which is convenient for fixing and pulling stress, reduces the operation time and labor cost, improves the pile pulling efficiency and safety; at the same time, the detachable connection of the insert board and the steel pile allows repeated use, reduces equipment wear and tear and engineering cost.

Description

Technical Field

[0001] This utility model relates to the field of steel pile technology, and in particular to a rapid pile extraction device. Background Technology

[0002] In existing technologies, when constructing various support structures, such as those for photovoltaic panels, steel piles need to be driven into the ground to provide a fixed foundation. These steel piles, located outside the soil, then serve as supports for the photovoltaic panels. In some cases, the geological conditions of the construction site are poor, resulting in high soil bearing capacity and relatively shallow sandstone burial depth. This makes it easy for the steel piles to deform or shift after being driven in, necessitating the extraction of the deformed or shifted H-shaped steel piles. For example, in regions like the Sichuan-Tibet Plateau in my country, where the rocky soil layer has a high gravel content (2m-4m thick), with approximately 10%-15% rock and 50%-65% gravel, steel pile deformation is highly likely.

[0003] However, the deformed and displaced steel piles that have already been driven into the soil are difficult to pull out, which increases the difficulty of construction. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a rapid pile extraction device that can quickly extract steel piles driven into the soil.

[0005] The objective of this utility model is achieved through the following technical solution: This application discloses a rapid pile extraction device for installation on a steel pile, comprising an insert plate detachably connected to the upper part of the steel pile; the steel pile includes a lower part driven into the soil and an upper part exposed on the ground, and a through hole is constructed in the upper part of the steel pile; an insert rod is provided on one side of the insert plate, the insert rod is adapted to be inserted into the through hole constructed on the steel pile, and a lifting lug is provided at the end of the insert plate, the lifting lug being adapted to pass a steel cable.

[0006] The beneficial effects of this utility model are: the device solves the problem of traditional pile extraction methods being difficult to use, such as the lack of a force-bearing point when binding the steel pile, or the difficulty in fixing and easy slippage when the steel cable is directly passed through the through hole of the steel pile; this device can provide a stable connection point through the lifting lug, which facilitates the force during fixing and pulling, reduces operation time and labor costs, and improves the efficiency and safety of pile extraction; at the same time, the detachable connection between the insert plate and the steel pile allows for reuse, reducing equipment wear and engineering costs.

[0007] Furthermore, the steel pile has multiple through holes, and the corresponding insert plate has multiple insert rods.

[0008] Furthermore, it also includes a fitting element adapted to mate with the rod portion of the insert for connection to the insert on the other side of the steel pile.

[0009] Furthermore, the mating component is a plate with a plurality of mating holes, the mating holes being arranged in an array and matching the placement position of the insert rod on the insert plate, so that each insert rod is suitable for passing through the corresponding mating hole.

[0010] Furthermore, the insertion rod is constructed as a screw.

[0011] Furthermore, the insertion rod penetrates the through hole of the steel pile, the thickness of the steel pile is A, and the length of the insertion rod is B, satisfying BA > 20mm.

[0012] Furthermore, the insertion rods are arranged in a row along the length of the plate, with each insertion rod spaced 50mm apart. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the rapid pile extraction device according to some embodiments of this application, when installed on a steel pile. Figure 2 This is a top view of a rapid pile extraction device according to some embodiments of this application, arranged in the case of steel piles; Figure 3 This is a schematic diagram of the structure of a rapid pile extraction device according to some embodiments of this application.

[0014] In the picture: 100-Rapid pile extraction device; 110-Insert plate, 120-Insert rod, 130-Lifting lug, 140-Matching part, 141-Matching hole; 200 - Steel pile, 210 - Through hole; 300-steel cable. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] See Figures 1-3 This utility model provides a technical solution: According to an embodiment of this application, a rapid pile extraction device 100 is mainly used to install on steel piles 200. The steel piles 200 are typically made of steel and are commonly used in civil engineering for temporary or permanent support structures. The term "steel pile 200" broadly refers to various types of steel piles 200, including but not limited to H-shaped, square, and other structural types. Application scenarios include bridge construction, dock engineering, and foundation treatment. The steel pile 200 includes a lower part driven into the soil and an upper part exposed on the ground. The upper part is used to install various supports or foundation columns.

[0017] The steel pile 200 used in this embodiment has a through hole 210 in its thickness direction to facilitate cooperation with the rapid pile extraction device 100, enabling the rapid pile extraction device 100 to extract the steel pile 200. Correspondingly, the rapid pile extraction device 100 described in this embodiment includes an insert plate 110 detachably connected to the upper part of the steel pile 200. This insert plate can be made of high-strength steel plate, for example, with a thickness of approximately 15 mm to 25 mm. Its width matches the perimeter or part of the perimeter of the steel pile 200, for example, a width of 30 mm to 50 mm. The length is set according to the height of the steel pile 200 and the pile extraction requirements.

[0018] A rod 120 is fixedly installed on one side of the insert plate 110. The rod 120 can be cylindrical or square, with a diameter slightly smaller than the diameter of the through hole 210 of the steel pile 200. For example, if the diameter of the through hole 210 is 12mm, the diameter of the rod 120 is 11.5mm to ensure smooth insertion without being too loose. The rod is positioned corresponding to the opening in the steel pile 200. One end of the rod 120 is connected to the insert plate 110 by welding or other means, positioned near the center of the insert plate 110 in the width direction to balance the force. A lug 130 is provided at the upper end of the insert plate 110. The lug 130 can be made of annular or U-shaped steel parts and fixed to the insert plate 110 by welding or riveting. For example, the inner diameter of the lug 130 is approximately 5mm to 10mm to facilitate the passage and connection of the steel cable 300.

[0019] In actual use, after the steel pile 200 has been driven into the soil, if the steel pile 200 shifts or bends, the operator inserts the insertion rod 120 of the insertion plate 110 into the through hole 210 at the top of the steel pile 200, ensuring that the insertion plate 110 is in close contact with the surface of the steel pile 200. Then, the steel cable 300 is connected through the lifting lug 130, and the other end of the steel cable 300 is connected to a crane or winch, and the equipment is started to extract the pile. In this way, after the insertion rod 120 is inserted into the through hole 210, a temporary fixing point is formed. When extracting the pile, the steel cable 300 applies tension, which is transmitted to the insertion plate 110 through the lifting lug 130, and then distributed to the through hole 210 area of ​​the steel pile 200 through the insertion rod 120, thereby pulling the steel pile 200 out of the soil.

[0020] Understandably, this device solves the problem of traditional pile extraction methods being difficult to implement. For example, traditional methods often lack a stress point when binding the steel pile 200, or the steel cable 300 is difficult to fix and prone to slippage when directly passing through the through hole 210 of the steel pile 200. This device can provide a stable connection point through the lifting lug 130, which facilitates fixing and stress distribution during pulling, reduces operation time and labor costs, and improves pile extraction efficiency and safety. At the same time, the detachable connection between the insert plate 110 and the steel pile 200 allows for reuse, reducing equipment wear and engineering costs.

[0021] Furthermore, the steel pile 200 has multiple through holes 210, and the corresponding insert plate 110 has multiple insert rods 120 to distribute stress and prevent damage to the steel pile 200.

[0022] Specifically, the steel pile 200 has multiple through holes 210, typically arranged longitudinally along its length. The number is determined by the size of the steel pile 200 and the load requirements. For example, two through holes 210 are provided on a steel pile 200 with an exposed length of 1.5 meters. The spacing between the through holes 210 is approximately 40mm to 60mm. The through holes 210 have the same shape and diameter to ensure uniform stress distribution. The corresponding insert plate 110 has multiple insert rods 120. The number and position of the insert rods 120 match the through holes 210. For example, two insert rods 120 are provided on one side of the insert plate 110. The spacing between the insert rods 120 is the same as the spacing between the through holes 210. The insert rods 120 have the same length and a diameter slightly smaller than the diameter of the through holes 210. Alternatively, in some examples, the insert rods 120 are arranged in a row along the length of the plate, with each insert rod 120 spaced 50mm apart.

[0023] During installation, operators simultaneously insert multiple insertion rods 120 into multiple through holes 210 of the steel pile 200, forming multi-point fixation. Thus, during pile extraction, the tension applied by the steel cable 300 is transmitted to the insertion plate 110 through the lifting lug 130, and then distributed to the multiple through holes 210 of the steel pile 200 via the multiple insertion rods 120, avoiding stress concentration in one area and reducing the risk of local deformation or breakage of the steel pile 200. In this way, by dispersing stress through multiple insertion rods 120, the possibility of damage to the steel pile 200 due to single-point overload during pile extraction is reduced, making it particularly suitable for high-intensity pile extraction operations, such as for large-diameter steel piles 200 or deeply buried piles. Simultaneously, the arrangement of multiple insertion rods 120 enhances connection stability, reduces vibration and swaying, and improves operational safety. Of course, this implementation method can be adjusted according to actual engineering needs to determine the number of through holes 210 and insertion rods 120.

[0024] In some embodiments, the device further includes a mating member 140. Exemplarily, the mating member 140 is plate-shaped, its dimensions matching those of the insert plate 110 and the steel post 200. For example, the mating member 140 is a rectangular plate with a thickness of approximately 10 to 20 millimeters, and its length and width match those of the insert plate 110 to cover the protruding portion of the insert rod 120. The mating member 140 is adapted to mate with the rod portion of the insert rod 120. Specifically, after the insert rod 120 is inserted into the through hole 210 of the steel post 200, the mating member 140 is placed on the other side of the steel post 200 (i.e., the side opposite to the insert plate 110), and the rod portion of the insert rod 120 passes through a corresponding hole or slot on the mating member 140. The mating member 140 can be connected to the insert rod 120 by snap-fit, bolt, or welding to form a bidirectional fixation.

[0025] In use, first insert the insertion rod 120 of the insert plate 110 into the through hole 210 of the steel pile 200, then fit the fitting 140 onto the protruding end of the insertion rod 120, and finally lock it with a fastener (such as a nut or pin). In this way, the fitting 140 acts as an auxiliary support point, working together with the insert plate 110 during pile extraction to evenly distribute the pulling force to both sides of the steel pile 200, reducing the shear stress of the insertion rod 120 on the edge of the through hole 210, thereby preventing deformation of the steel pile 200 or enlargement of the through hole 210.

[0026] In detail, refer to Figure 2 and Figure 3 The mating component 140 is a plate with several mating holes 141. The mating holes 141 are arranged in an array and match the positions of the insert rods 120 on the insert plate 110. The mating holes 141 are circular, with a diameter slightly larger than that of the insert rods 120. For example, when the diameter of the insert rods 120 is 12 mm, the diameter of the mating holes 141 is 12.5 mm to ensure smooth passage. The spacing between the holes is consistent with the spacing between the insert rods 120 on the insert plate 110, ensuring that each insert rod 120 can accurately pass through the corresponding mating hole 141. Of course, the insert rods 120 can also be constructed as screws and further fixed by bolts (not shown in the figure).

[0027] The insertion rod 120 is a screw type, meaning the rod surface is machined with threads of standard metric or imperial type, such as M12 or 1 / 2 inch threads, with a moderate pitch to ensure sufficient gripping force. The mating part 140 is correspondingly designed as a nut with internal threads or uses a standard plate with washers and nuts. In actual installation, after the operator inserts the screw into the through hole 210 of the steel pile 200, the mating part 140 (such as a nut or a perforated plate) is fitted onto the other side of the steel pile 200. Then, the nut is tightened with a wrench to apply preload, ensuring a tight fit between the insertion plate 110, the steel pile 200, and the mating part 140. This screw and bolt mechanism generate mechanical locking force through threaded engagement, preventing the insertion rod 120 from dislodging from the through hole 210 during pile extraction. Simultaneously, the preload counteracts vibration and impact loads, improving the reliability and stability of the connection.

[0028] In some embodiments, to simplify the structure, the insertion rod 120 may be used to mate with the through hole 210 on the steel pile 200. In this embodiment, the thickness A of the steel pile 200 and the length B of the insertion rod 120 need to satisfy BA > 10 mm.

[0029] For example, the thickness A of the steel pile 200 is generally in the range of 20mm to 50mm, depending on the type of steel pile 200 (such as pipe pile, H-type pile) and engineering requirements. For example, for common steel pipe piles, the value of A is often 25mm or 30mm; for applications requiring higher strength, steel piles 200 with a thickness of 40mm or more can be used. The length B of the insertion rod 120 is set according to the value of A, and must strictly satisfy the relationship BA > 20mm. For example, when the thickness A of the steel pile 200 is 30mm, the length B of the insertion rod 120 is at least 50mm; in a more preferred embodiment, the value of B can be designed to be 100mm to provide a greater safety margin.

[0030] In other words, when the insertion rod 120 protrudes at least 20mm, during the pile extraction process, the protruding length of the insertion rod 120 is sufficient to prevent it from coming out of the through hole 210. Unlike the case where a nut is used for fastening, the insertion rod 120 is only placed in the through hole 210, which can release a certain amount of ore and prevent it from deforming.

[0031] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A rapid pile extraction device, used for installation on steel piles, characterized in that, Includes a insert plate that can be detachably connected to the upper part of the steel pile; The steel pile includes a lower part driven into the soil and an upper part exposed on the ground, and a through hole is constructed in the upper part of the steel pile; a rod is provided on one side of the insert plate, the rod is adapted to be inserted into the through hole constructed on the steel column, and a lifting lug is provided at the end of the insert plate, the lifting lug is adapted to pass through a steel cable.

2. The rapid pile extraction device according to claim 1, characterized in that, The steel pile has multiple through holes, and the corresponding insert plate has multiple insert rods.

3. The rapid pile extraction device according to claim 2, characterized in that, It also includes a fitting that is adapted to mate with the rod portion of the insert for connection to the insert on the other side of the steel pile.

4. The rapid pile extraction device according to claim 3, characterized in that, The mating component is a plate with a plurality of mating holes. The mating holes are arranged in an array and matched with the positions of the insert rods on the insert plate, so that each insert rod is suitable for passing through the corresponding mating hole.

5. The rapid pile extraction device according to claim 3 or 4, characterized in that, The insertion rod is constructed as a screw.

6. The rapid pile extraction device according to claim 2, characterized in that, The insertion rod passes through the through hole of the steel pile, the thickness of the steel pile is A, and the length of the insertion rod is B, satisfying BA > 20mm.

7. The rapid pile extraction device according to claim 2, characterized in that, The insert rods are arranged in a row along the length of the plate, with a 50mm interval between each insert rod.

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