Large steel pipe pile feeder

Abstract

The utility model relates to a large steel pipe pile feeder which comprises a cylinder body, an outer sleeve type skirt cylinder, an inner lifting lug, a lower flange and annular round steel. The upper half part of the barrel is of a hollow cylindrical structure, and the lower half part of the barrel is of a hollow conical structure; the internal lifting lugs are fixedly connected to the inner wall of the cylindrical structure of the barrel body in a circumferentially and uniformly distributed manner; the lower flange is correspondingly and fixedly connected to the bottom end of the conical structure of the cylinder body; the annular round steel is arranged above the lower flange and is correspondingly and fixedly connected with the outer side of the circumference of the conical structure of the cylinder body; the outer side of the lower portion of the conical structure of the cylinder body is coaxially sleeved with the outer sleeve type skirt cylinder, and the top of the outer sleeve type skirt cylinder is correspondingly connected to the upper portion of the edge of the annular round steel in a clamped mode. On the premise that the energy of the pile hammer is met, the problem that the hammer cap is not matched with the pile diameter is solved, the hammer cap does not need to be replaced, the construction cost is reduced, the construction efficiency and the applicability of the pile hammer are improved, and meanwhile the structural height, the structural gravity center and the risk of accidents can be reduced when the pile hammer is stored.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wind power equipment, in particular to a large-scale steel pipe pile driver. Background Art

[0002] Offshore wind power is a clean energy generation method that uses wind energy by installing wind turbines in the ocean. In order to support these wind turbines, a strong support structure needs to be installed on the seabed, usually using steel pipe piles. The steel pipe piles need to be sunk into the seabed using a pile hammer to ensure the stability and reliability of the support structure.

[0003] However, as the operating water depth increases, the diameter of the steel pipe pile becomes larger and larger, and the size of the existing pile hammer cap can no longer match the diameter of the steel pipe pile.

[0004] Therefore, in order to effectively utilize a pile hammer with a small diameter but sufficient energy, a large pile driver needs to be invented to solve the problem of the incompatibility between the hammer cap and the pile diameter, thereby improving the applicability of the pile hammer, avoiding the increased cost caused by replacing the hammer cap, and improving operating efficiency. Summary of the invention

[0005] In view of the above problems, the purpose of the utility model is to provide a large steel pipe pile driver, which can effectively solve the problems that the hammer cap size of the existing pile driving hammer cannot match the diameter of the steel pipe pile, the replacement of the hammer cap brings increased costs, and the operating efficiency is low.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A large-scale steel pipe pile driver proposed in the utility model comprises a cylinder, an outer sleeve skirt, internal lifting ears, a lower flange and annular round steel; the upper half of the cylinder is a hollow cylindrical structure, and the lower half is a hollow conical structure; the internal lifting ears are evenly distributed circumferentially and fixedly connected to the inner wall of the cylindrical structure of the cylinder; the lower flange is correspondingly fixedly connected to the bottom end of the conical structure of the cylinder; the annular round steel is arranged above the lower flange and is correspondingly fixedly connected to the circumferential outer side of the conical structure of the cylinder; the outer sleeve skirt is coaxially sleeved on the lower outer side of the conical structure of the cylinder, and the top of the outer sleeve skirt is correspondingly clamped above the edge of the annular round steel.

[0008] Furthermore, the upper portion of the outer wall of the cylindrical conical structure is provided with external fixed ears evenly distributed in the circumferential direction.

[0009] Furthermore, four internal lifting ears and four external lifting ears are provided, and are fixedly connected to the cylinder body by welding.

[0010] Furthermore, the bottom end of the outer skirt is configured as a tapered tube mouth.

[0011] Furthermore, the upper end surface edge of the outer sleeve skirt is evenly distributed circumferentially and fixedly connected with bottom hanging ears.

[0012] Furthermore, four bottom lifting ears are provided and fixedly connected to the upper end surface of the jacket-type skirt by welding.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model is suitable for a 6.5m Ф pile hammer cap and a 7.5m Ф steel pipe pile. On the premise of meeting the energy of the pile hammer, it solves the problem of the mismatch between the hammer cap and the pile diameter. There is no need to replace the hammer cap, which reduces construction costs and improves construction efficiency.

[0015] The design of the four lifting ears inside the pile driver makes the hooking and unhooking process more convenient and safer, reducing the safety risks in construction; and when stored, the structure height can be shortened and the center of gravity can be lowered to adapt to harsh offshore environmental conditions, including waves, wind, etc., to ensure the convenience of using the pile driver and help improve the safety of offshore operations; the external lifting ears can be connected to the lifting ears of the pile hammer cap through rigging, so that the pile hammer can be hung together with the pile driver to directly cover the pile, thereby improving operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a main structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the assembly of the utility model and the pile hammer cap;

[0018] Figure 3 It is a schematic diagram of the main structure of the jacket-type skirt;

[0019] Figure 4 It is a schematic diagram of the structure of the jacket-type skirt from a top view;

[0020] Figure 5 It is a schematic diagram of the structure of the cylinder.

[0021] In the figure: 1-cylinder; 2-jacket skirt; 3-internal lifting lug; 4-external lifting lug; 5-lower flange; 6-bottom lifting lug; 7-ring-shaped round steel. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] It should be noted that, in the description of the present utility model, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not mean that the device or element must have a specific orientation, be constructed and operated in a specific orientation.

[0024] See attached Figure 1-4 The specific structure of an embodiment of a large steel pipe pile driver proposed by the utility model is given. The driver comprises a cylinder 1, an outer skirt 2, an inner lifting lug 3, a lower flange 5 and an annular round steel 7.

[0025] Among them, the upper half of the cylinder 1 is a hollow cylindrical structure, and the lower half is a hollow conical structure, and the diameter change rate of the lower conical structure from top to bottom is consistent with each other, so that after being connected to each other, the cross sections of the two connected surfaces are on the same extension line.

[0026] In this embodiment, four internal lifting ears 3 are provided, which are welded on the inner wall of the cylindrical structure of the cylinder body 1 in a circumferentially uniform distribution; the lower flange 5 is coaxially fixed to the bottom end of the conical structure of the cylinder body 1; the annular round steel 7 is arranged above the lower flange 5, and is fixed to the circumferential outer wall of the corresponding part of the conical structure of the cylinder body 1; the outer sleeve skirt 2 is coaxially sleeved on the lower outer side of the conical structure of the cylinder body 1, and the top of the outer sleeve skirt 2 is provided with an annular clamp extending inward, which is correspondingly sleeved on the circumferential edge of the annular round steel 7 through the annular clamp, so that when the cylinder body 1 is lifted, it can be clamped in the corresponding position and the cylinder body 1 and the outer sleeve skirt 2 are connected as a whole; the bottom end of the outer sleeve skirt 2 is set as a conical cylinder mouth.

[0027] In this embodiment, four external lifting ears 4 are welded uniformly circumferentially on the upper portion of the outer wall of the conical structure of the cylinder 1 .

[0028] The outer skirt 2 has four bottom hanging ears welded uniformly on the circumferential edge of the upper end surface.

[0029] The use state of the utility model is as follows: before starting work, the pile driver needs to be installed on the top of the steel pipe pile through the outer skirt 2, and used in conjunction with the pile hammer and hammer cap. Using the internal lifting lug 3, the operator can place the pile driver on the top of the steel pipe pile. The pile hammer is put on the pile driver, and the pile sinking operation can be started. The pile hammer hits the top of the pile driver by releasing high-pressure gas or liquid, so that the steel pipe pile is gradually sunk to the seabed. The outer skirt 2 at the bottom of the pile driver can safely fix the pile driver on the steel pipe pile. After the steel pipe pile is sunk to the elevation, the operator lifts the pile driver from the pile driver, uses the internal lifting lug 3 to remove the pile driver from the steel pipe pile, and places it on the deck of the construction ship. In this process, the outer skirt 2 first contacts the deck, and the pile driver continues to be lowered, the height of the cylinder 1 is reduced, the center of gravity is lowered, and then the lower flange 5 falls to the deck, and then the pile driver is tied and fixed.

[0030] The utility model effectively solves the problem of the hammer cap not matching the pile diameter, and there is no need to replace the hammer cap, which reduces the construction cost and improves the construction efficiency. The design of the internal lifting lug 3 of the new pile driver makes the hooking and unhooking process more convenient and safe, reducing the safety risk of construction; at the same time, after design, the structure height can be shortened and the center of gravity can be lowered when stored to adapt to the harsh marine environment conditions, including waves, wind, etc., which helps to improve the safety of offshore operations; the external lifting lug 4 of the new pile driver can be connected to the pile hammer cap lifting lug through rigging, so that the pile hammer can be hung together with the pile driver to directly cover the pile, which improves the operation efficiency.

[0031] Matters not described in detail in this utility model are known technologies.

[0032] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A large steel pipe pile driver, characterized in that: The pile driver comprises a cylinder, an outer skirt, internal lifting ears, a lower flange and an annular round steel; the upper half of the cylinder is a hollow cylindrical structure, and the lower half is a hollow conical structure; the internal lifting ears are evenly distributed circumferentially and fixedly connected to the inner wall of the cylindrical structure of the cylinder; the lower flange is correspondingly fixedly connected to the bottom end of the conical structure of the cylinder; the annular round steel is arranged above the lower flange and is correspondingly fixedly connected to the circumferential outer side of the conical structure of the cylinder; the outer skirt is coaxially sleeved on the lower outer side of the conical structure of the cylinder, and the top of the outer skirt is correspondingly clamped above the edge of the annular round steel.

2. A large steel pipe pile driver according to claim 1, characterized in that: The upper part of the outer wall of the cylindrical cone structure is uniformly distributed circumferentially with fixed external lifting ears.

3. A large steel pipe pile driver according to claim 2, characterized in that: The internal lifting ears and the external lifting ears are both provided with four and are fixedly connected to the cylinder body by welding.

4. The large steel pipe pile driver according to claim 1, characterized in that: The bottom end of the outer skirt is arranged as a conical tube mouth.

5. The large steel pipe pile driver according to claim 1, characterized in that: The edge of the upper end surface of the outer sleeve skirt is evenly distributed circumferentially and fixedly connected with bottom hanging ears.

6. A large steel pipe pile driver according to claim 5, characterized in that: The bottom lifting ears are provided with four and are fixedly connected to the upper end surface of the jacket-type skirt by welding.

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