Underwater pile feeder suitable for hydraulic impact hammer

Abstract

The underwater pile feeder comprises a pile cap, a check ring, a cushion pad, a pile feeding body and a connecting body, the pile cap is cylindrical, the hydraulic impact hammer is connected with the pile cap through a bolt and a nut, the check ring is of a fan-shaped annular structure, the check ring can limit movement of the cushion pad, and the hydraulic impact hammer is connected with the pile cap through a bolt and a nut. The upper end of the buffer pad is in contact with the hydraulic impact hammer, the hydraulic impact hammer directly hits the buffer pad, a welding foot is arranged at the lower end of the buffer pad, the pile feeding body and the buffer pad are welded together through the welding foot, and the pile feeding device can be connected with a steel pile through the connecting body. And underwater efficient piling of the hydraulic impact hammer is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic impact hammers, in particular to an underwater pile driver suitable for hydraulic impact hammers. Background Art

[0002] The construction of marine projects such as artificial islands at sea and offshore wind power requires the use of steel piles for support. Hydraulic impact hammers are widely used in the penetration construction of marine engineering steel piles due to their large impact capacity and high striking efficiency.

[0003] During offshore construction, due to the requirements of some special projects, it is necessary to drive steel piles into the sea surface, that is, the hydraulic impact hammer must hit the steel piles underwater. However, the hydraulic impact hammer is equipped with many electrical components, and a large amount of seawater infiltration will inevitably cause equipment damage. Therefore, how to ensure that the hydraulic impact hammer can efficiently hit the steel piles underwater is an urgent problem to be solved in offshore construction. Utility Model Content

[0004] In order to solve the above problems, the utility model provides an underwater pile driver suitable for a hydraulic impact hammer.

[0005] The technical scheme adopted to realize the utility model is: an underwater pile driver suitable for a hydraulic impact hammer, comprising a pile cap, a retaining ring, a buffer pad, a pile driving body, and a connecting body. The pile cap is cylindrical, and a through hole is opened at its upper end. The pile cap and the hydraulic impact hammer can be connected by bolts and nuts. A connecting flange is arranged at the lower end of the pile cap, and the connecting flange has a through hole. The retaining ring is a fan-shaped annular structure, and the retaining ring has a circular through hole. The retaining ring and the pile cap can be connected and fixed by bolts and nuts. The upper end of the buffer pad contacts the hydraulic impact hammer, and the hydraulic impact hammer directly strikes the buffer pad. A welding foot is arranged at the lower end of the buffer pad. The pile driving body is cylindrical, and the connecting body can realize the connection between the pile driver and the steel pile. The connecting body and the underwater pile driving body are fixed together by welding. A transition section is arranged on the side of the pile driving body, and a reinforcing rib is arranged at the lower end of the connecting body. There are twelve reinforcing ribs in total.

[0006] As a further solution of the utility model: there are four retaining rings, the through holes of the four retaining rings correspond to the through holes of the pile cap flange, and after being fixedly connected by bolts and nuts, the inner diameter of the ring formed by the retaining rings is larger than the outer diameter of the lower end of the buffer pad, which can limit the movement of the buffer pad.

[0007] As a further solution of the utility model: the outer end diameter of the transition section has a sudden change, the steel pile is fixed by the transition section, and there is a clearance fit between the steel pile and the connector.

[0008] As a further solution of the utility model: the pile delivery body and the connector are made of chromium-manganese alloy and are treated with waterproofing and rust prevention. During the underwater piling construction, the pile delivery body and the connector are immersed in seawater.

[0009] As a further solution of the utility model: the pile delivery body is connected and fixed with the welding foot by welding, and after welding, there is no relative movement between the pile delivery body and the buffer pad.

[0010] After the equipment is installed, the hydraulic impact hammer directly hits the upper end of the buffer pad. The energy is transferred to the pile driving body through the buffer pad, and then transferred to the connecting body by the pile driving body, finally realizing the penetration of the steel pile into the soil.

[0011] The beneficial effect of the utility model is that the use of the utility model can meet the requirements of underwater piling in offshore engineering construction and can realize efficient underwater piling by a hydraulic impact hammer. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model will be further described below in conjunction with the accompanying drawings.

[0013] Figure 1 It is a sectional view of the overall structure of the utility model.

[0014] Figure 2 This is a schematic diagram of the appearance structure of the utility model.

[0015] Figure 3 It is a bottom view of the utility model.

[0016] Figure 4 A schematic diagram of the structure of the buffer pad.

[0017] Figure 5 Schematic diagram of the connector structure.

[0018] In the figure: 1, pile cap; 2, retaining ring; 3, buffer pad; 4, pile body; 5, connector; 301, welding foot; 501, transition section; 502, reinforcing rib. DETAILED DESCRIPTION

[0019] Depend on Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5It can be seen that an underwater pile driver suitable for a hydraulic impact hammer comprises a pile cap 1, a retaining ring 2, a buffer pad 3, a pile driving body 4, and a connecting body 5. The pile cap 1 is cylindrical, and a through hole is opened at its upper end. The pile cap 1 can be connected to the hydraulic impact hammer by bolts and nuts. A connecting flange is provided at the lower end of the pile cap 1, and the connecting flange has a through hole. The retaining ring 2 is a fan-shaped annular structure, and the retaining ring 2 has a circular through hole. The retaining ring 2 can be connected and fixed to the pile cap 1 by bolts and nuts. The upper end of the buffer pad 3 contacts the hydraulic impact hammer, and the hydraulic impact hammer directly strikes the buffer pad 3. A welding foot 301 is provided at the lower end of the buffer pad 3. The pile driving body 4 is cylindrical, and the connecting body 5 can realize the connection between the underwater pile driver and the steel pile. The connecting body 5 and the pile driving body 4 are fixed together by welding. A transition section 501 is provided on the side of the pile driving body 4, and a reinforcing rib 502 is provided at the lower end of the connecting body 5. There are twelve reinforcing ribs 502 in total.

[0020] There are four retaining rings 2, and the through holes of the four retaining rings 2 correspond to the through holes of the connecting flange at the lower end of the pile cap 1. After being fixedly connected by bolts and nuts, the inner diameter of the ring formed by the retaining ring 2 is larger than the outer diameter of the lower end of the buffer pad 3, which can limit the movement of the buffer pad 3.

[0021] The outer end diameter of the transition section 501 has a sudden change, the steel pile is fixed by the transition section 501, and there is a clearance fit between the steel pile and the connector 5.

[0022] The pile delivery body 4 and the connector 5 are made of chromium-manganese alloy and are treated with waterproof and rust-proofing. During the underwater piling construction process, the pile delivery body 4 and the connector 5 are immersed in seawater.

[0023] The pile delivery body 4 is connected and fixed to the welding foot 301 by welding. After welding, there is no relative movement between the pile delivery body 4 and the buffer pad 3.

[0024] When the utility model is used, the pile cap 1 is connected with the hydraulic impact hammer by bolts and nuts, the steel pile is connected with the connector 5, the hydraulic impact hammer strikes the buffer pad 3, and transfers energy to the buffer pad 3. The pile delivery body 4 is welded to the buffer pad 3 and the connector 5. The energy obtained by the buffer pad 3 is transferred to the steel pile through the pile delivery body 4 and the connector 5, so that the steel pile overcomes the resistance and penetrates into the soil.

[0025] Finally, it should be noted that the above are only preferred implementation modes of the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An underwater pile driver suitable for a hydraulic impact hammer, characterized in that: The invention comprises a pile cap (1), a retaining ring (2), a buffer pad (3), a pile delivery body (4), and a connecting body (5). The pile cap (1) is cylindrical, and a through hole is formed at the upper end thereof. The pile cap (1) can be connected to a hydraulic impact hammer by means of bolts and nuts. A connecting flange is provided at the lower end of the pile cap (1). The connecting flange has a through hole. The retaining ring (2) is a fan-shaped annular structure. The retaining ring (2) has a circular through hole. The retaining ring (2) can be connected and fixed to the pile cap (1) by means of bolts and nuts. The upper end of the buffer pad (3) contacts with the hydraulic impact hammer, and the hydraulic impact hammer directly strikes the buffer pad (3). The lower end of the buffer pad (3) is provided with a welding foot (301). The pile driving body (4) is cylindrical. The connecting body (5) can realize the connection between the underwater pile driving device and the steel pile. The connecting body (5) and the pile driving body (4) are fixed together by welding. The side of the pile driving body (4) is provided with a transition section (501), and the lower end of the connecting body (5) is provided with a reinforcing rib (502).

2. The underwater pile driver suitable for a hydraulic impact hammer according to claim 1, characterized in that: The pile delivery body (4) is connected and fixed to the welding foot (301) by welding, and after welding, there is no relative movement between the pile delivery body (4) and the buffer pad (3).

3. The underwater pile driver suitable for a hydraulic impact hammer according to claim 1, characterized in that: The pile delivery body (4) and the connecting body (5) are made of chromium-manganese alloy and are treated to be waterproof and rust-proof. During the underwater pile driving construction process, the pile delivery body (4) and the connecting body (5) are immersed in seawater.

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