Substitute driving device for driving large-diameter single pile

Abstract

The utility model discloses an alternative driving device for driving a large-diameter single pile. The alternative driving device comprises an alternative driving ring and an alternative driving device body. The axial section of the replacement ring is in an L shape, and the replacement ring comprises a ring part and a cylinder part integrally connected to the top face of the ring part. The outer diameter of the ring part is the same as the outer diameter of the cylinder part and is matched with the outer diameter of a single pile, the inner diameter of the ring part is smaller than that of the cylinder part, and a plurality of vent grooves are evenly distributed in the bottom face of the ring part in the radial direction in the circumferential direction; the trigger body comprises a cylinder and a circular truncated cone integrally connected to the top face of the cylinder. The height of the cylinder is matched with the height of the barrel part of the replacement beating ring, and the diameter of the cylinder is matched with the inner diameter of the barrel part of the replacement beating ring; and the diameter of the lower bottom of the circular truncated cone is the same as that of the cylinder. The utility model not only can expand the diameter, but also can reduce the loss of piling energy.

Description

Technical Field

[0001] The utility model relates to a replacement driving device for driving a large-diameter single pile. Background Art

[0002] Currently, the diameter of offshore wind power single pile foundations is trending toward larger sizes. During pile construction, various pile-driving hammers are typically used to sink the pile, with hydraulic impact hammers being the most common. To protect the pile head, a pile cap and a replacement hammer are typically installed on top of the pile. Existing replacement hammers are typically forged, but the maximum diameter processed with existing forging technology is only 7.6m, which is insufficient for driving large-diameter single piles. Furthermore, for piles of varying diameters, it is often necessary to prepare multiple replacement hammers of corresponding diameters to match the pile foundation. This increases construction costs and reduces efficiency. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a replacement driving device for driving a large-diameter single pile, which can not only expand the diameter but also reduce the loss of pile driving energy.

[0004] A technical solution for achieving the purpose of the utility model is: a replacement driving device for driving a large-diameter single pile, comprising a replacement driving ring and a replacement driving body; wherein,

[0005] The replacement ring has an L-shaped axial cross-section and includes a ring portion and a barrel portion integrally connected to the top surface of the ring portion; the outer diameter of the ring portion is the same as that of the barrel portion and is adapted to the outer diameter of the single pile, and the inner diameter of the ring portion is smaller than that of the barrel portion. A plurality of radial ventilation grooves are evenly distributed on the bottom surface of the ring portion.

[0006] The replacement body includes a cylinder and a frustum integrally connected to the top surface of the cylinder; the height of the cylinder is adapted to the height of the barrel of the replacement ring, and the diameter of the cylinder is adapted to the inner diameter of the barrel of the replacement ring; the bottom diameter of the frustum is the same as the diameter of the cylinder.

[0007] Another technical solution for achieving the purpose of the present utility model is: a replacement driving device for driving a large-diameter single pile, comprising a replacement driving ring and a replacement driving body; wherein,

[0008] The axial cross-section of the replacement ring is L-shaped and includes a ring portion and a tube portion integrally connected to the top surface of the ring portion; the outer surface of the ring portion and the outer surface of the tube portion are both cylindrical surfaces, and the diameters of both are adapted to the outer diameter of the single pile; the inner diameter of the ring portion is smaller than the minimum inner diameter of the tube portion; a plurality of radial ventilation grooves are evenly distributed on the bottom surface of the ring portion; the inner wall surface of the tube portion is a conical surface with a larger upper portion and a smaller lower portion;

[0009] The replacement body includes an inverted frustum and a frustum integrally connected to the top surface of the inverted frustum; the height of the inverted frustum is adapted to the height of the barrel of the replacement ring, and the slope of the outer surface of the inverted frustum is adapted to the slope of the inner wall of the barrel of the replacement ring; the bottom diameter of the frustum is the same as the top diameter of the inverted frustum.

[0010] The present invention's replacement driving device for driving large-diameter single piles has the following features: It adopts a split structure, with a replacement driving ring whose lower end face abuts against the top of the single pile to expand the diameter of the replacement driving device, thus compensating for the shortcomings of existing forging methods, and allowing the replacement driving device to directly receive the impact of the hydraulic hammer; through the mechanical coordination of the replacement driving device and the replacement driving ring, the impact energy is transferred from the replacement driving device to the replacement driving ring, and then from the replacement driving ring to the single pile, thereby reducing the loss of piling energy. The present invention's replacement driving device can meet the needs of piling construction for single piles of various specifications by simply replacing the replacement driving ring with an outer diameter that matches the outer diameter of the single pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front view of the first hydraulic hammer of the utility model;

[0012] Figure 2 yes Figure 1 AA view in the;

[0013] Figure 3 This is a front view of a hydraulic hammer for a second embodiment of the present invention;

[0014] Figure 4 yes Figure 3 BB view in . DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] See also Figure 1 The first type of substitute hitting device for striking a large-diameter single pile of the utility model comprises a substitute hitting ring 1 and a substitute hitting body 2.

[0017] The substituting ring 1 has an L-shaped axial cross-section and comprises a ring portion 11 and a cylindrical portion 12 integrally connected to the top surface of the ring portion. The outer diameter of the ring portion 11 is the same as that of the cylindrical portion 12 and matches the outer diameter of the single pile, while the inner diameter of the ring portion 11 is smaller than that of the cylindrical portion 11. A plurality of radial ventilation grooves 110 are uniformly distributed on the bottom surface of the ring portion 11.

[0018] The substitute striking body 2 includes a cylinder 21 and a frustum 22 integrally connected to the top surface of the cylinder 21; wherein, the height of the cylinder 21 is adapted to the height of the barrel 12 of the substitute striking ring 1, and the diameter of the cylinder 21 is clearance-fitted with the inner diameter of the barrel 12 of the substitute striking ring 1; the lower base diameter of the frustum 22 is the same as the diameter of the cylinder 21.

[0019] With the first type of substitution of the present invention, during the piling process, the substitution ring 1 completes the expansion of the substitution diameter, and the hydraulic hammer directly hits the substitution body 2. The substitution ring 1 is subjected to the hitting pressure of the substitution body 2 and the rebound force of the single pile, and is slightly bent and deformed radially inward under the action of the torque, so that the inner diameter of the barrel of the substitution ring 1 is reduced and the substitution body 2 is tightly held. The more the piling is hit, the tighter it is, so that the substitution ring 1 transfers the hitting energy to the single pile. After the piling is completed, the elastic deformation of the substitution ring 1 will be restored, and it will be separated from the substitution body 2. A ventilation groove 110 is provided at the bottom of the substitution ring 1 for the discharge and heat dissipation of the gas in the pile during the piling process.

[0020] The second type of the substitute driving device of the present invention is used for driving a large-diameter single pile, and comprises a substitute driving ring 1 and a substitute driving body 2 .

[0021] The axial cross-section of the substitution ring 1 is L-shaped and comprises a ring portion 11 and a tube portion 12 integrally connected to the top surface of the ring portion 11; wherein, the outer surface of the ring portion 11 and the outer surface of the tube portion 12 are both cylindrical surfaces and the diameters are adapted to the outer diameter of the single pile, the inner diameter of the ring portion 11 is smaller than the minimum inner diameter of the tube portion 12, and a plurality of radial ventilation grooves 110 are evenly distributed on the bottom surface of the ring portion 11; the inner wall surface of the tube portion 12 is a conical surface that is larger at the top and smaller at the bottom.

[0022] The replacement body 2 includes an inverted frustum 21' and a frustum 22 integrally connected to the top surface of the inverted frustum 21'; wherein, the height of the inverted frustum 21' is adapted to the height of the barrel 11 of the replacement ring 1, and the slope of the outer surface of the inverted frustum 21' is adapted to the slope of the inner wall surface of the barrel 12 of the replacement ring 1; the bottom diameter of the frustum 22 is the same as the top diameter of the inverted frustum 21'.

[0023] With the second type of substitution method of the present invention, during the piling process, the substitution ring 1 expands the substitution diameter. The hydraulic hammer directly strikes the substitution body 2, which is forced downward into the barrel 12 of the substitution ring 1. The frustum 21' of the substitution body 2 achieves an interference fit with the barrel 12 of the substitution ring 1. As the pile is driven tighter and tighter, the substitution ring 1 transfers the striking energy to the single pile. When the piling is completed, the substitution ring 1 and the substitution body 2 have become one. A ventilation groove 110 is provided at the bottom of the substitution ring 1 to discharge and dissipate heat from the gas in the pile during the piling process.

[0024] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Those skilled in the art may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention and should be defined by the claims.

Claims

1. A replacement hitter for hitting a large-diameter single pile, comprising a replacement hitter ring and a replacement hitter body; characterized in that: The replacement ring has an L-shaped axial cross-section and includes a ring portion and a barrel portion integrally connected to the top surface of the ring portion; the outer diameter of the ring portion is the same as that of the barrel portion and is adapted to the outer diameter of the single pile, and the inner diameter of the ring portion is smaller than that of the barrel portion. A plurality of radial ventilation grooves are evenly distributed on the bottom surface of the ring portion. The replacement body includes a cylinder and a frustum integrally connected to the top surface of the cylinder; the height of the cylinder is adapted to the height of the barrel of the replacement ring, and the diameter of the cylinder is adapted to the inner diameter of the barrel of the replacement ring; the bottom diameter of the frustum is the same as the diameter of the cylinder.

2. A replacement hitter for hitting a large-diameter single pile, comprising a replacement hitter ring and a replacement hitter body; characterized in that: The axial cross-section of the replacement ring is L-shaped and includes a ring portion and a tube portion integrally connected to the top surface of the ring portion; the outer surface of the ring portion and the outer surface of the tube portion are both cylindrical surfaces, and the diameters of both are adapted to the outer diameter of the single pile; the inner diameter of the ring portion is smaller than the minimum inner diameter of the tube portion; a plurality of radial ventilation grooves are evenly distributed on the bottom surface of the ring portion; the inner wall surface of the tube portion is a conical surface with a larger upper portion and a smaller lower portion; The replacement body includes an inverted frustum and a frustum integrally connected to the top surface of the inverted frustum; the height of the inverted frustum is adapted to the height of the barrel of the replacement ring, and the slope of the outer surface of the inverted frustum is adapted to the slope of the inner wall of the barrel of the replacement ring; the bottom diameter of the frustum is the same as the top diameter of the inverted frustum.

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