CN111021352A

CN111021352A - Pile feeding device

Info

Publication number: CN111021352A
Application number: CN201911119801.9A
Authority: CN
Inventors: 毕明君; 任灏; 张力; 汤东升; 何小华; 马兆荣; 刘晋超; 刘东华; 元国凯; 王洪庆; 刘旭东
Original assignee: China Energy Engineering Group Guangdong Electric Power Design Institute Co Ltd
Current assignee: China Energy Engineering Group Guangdong Electric Power Design Institute Co Ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-04-17

Abstract

The invention relates to a pile driving device. The pile driving device comprises a pile driving pipe, a first connecting piece, a second connecting piece and a sealing assembly. The pile feeding pipe comprises a hammering section and a socket section, the hammering section is used for being connected with the impact hammer, and the socket section is used for penetrating in the steel pipe pile. The first connecting piece is sleeved on the hammering section and is fixedly connected with the hammering section. The second connecting piece is used for being sleeved on the steel pipe pile and is fixedly connected with the steel pipe pile, and the second connecting piece is detachably connected with the first connecting piece. The sealing assembly is arranged between the first connecting piece and the second connecting piece and is connected with the first connecting piece and the second connecting piece in a sealing mode. The pile feeding device avoids the underwater pipe cutting process after pile sinking is completed, reduces the underwater operation amount, and greatly reduces the operation difficulty and the construction safety risk. And the detachable pile sending pipe can be repeatedly used, so that the material cost is saved.

Description

Pile feeding device

Technical Field

The invention relates to the technical field of offshore wind power engineering, in particular to a pile feeding device.

Background

In offshore wind power engineering, a wind turbine foundation usually adopts a foundation form combining a jacket and a steel pipe pile. However, in some sea areas with shallow rock surface covering layers, the difficulty of directly sinking the steel pipe pile by adopting a driving method is very high, and rock-socketed process construction is usually required.

In order to ensure that the steel pipe pile is sunk in place in the rock-socketed process construction and provide convenience for subsequent rock-socketed construction operation, a section of lengthened pipe pile needs to be temporarily welded at the top of the originally designed steel pipe pile in the traditional pile-feeding process, so that the steel pipe pile is higher than the sea level to be connected with an impact hammer. However, in such a pile-driving process, after pile sinking is completed, the steel pipe pile needs to be subjected to pipe cutting under water to remove the temporarily welded lengthened pipe pile, which causes great difficulty in operation and increases waste cost. In addition, in order to avoid water leakage and air leakage of the steel pipe pile during pile sinking, a steel sleeve with a diameter larger than that of the steel pipe pile is usually sleeved on the outer side of the steel pipe pile in the traditional pile feeding process to serve as a construction cofferdam. However, the steel sleeve cofferdam needs secondary sinking construction, construction cost is increased, and the operation is high in safety risk and long in construction time.

Disclosure of Invention

Therefore, it is necessary to provide a pile feeding device for reducing the difficulty of pile sinking operation in offshore wind power engineering.

A pile feeder apparatus comprising:

the pile feeding pipe comprises a hammering section and a socket section, the hammering section is used for being connected with the impact hammer, and the socket section is used for penetrating in the steel pipe pile;

the first connecting piece is sleeved on the hammering section and is fixedly connected with the hammering section;

the second connecting piece is sleeved on the steel pipe pile and fixedly connected with the steel pipe pile, and the second connecting piece is detachably connected with the first connecting piece; and the number of the first and second groups,

and the sealing assembly is arranged between the first connecting piece and the second connecting piece, and two ends of the sealing assembly are respectively connected with the first connecting piece and the second connecting piece in a sealing manner.

According to the pile feeding device, the socket section is arranged on the pile feeding pipe, so that the socket section is arranged in the steel pipe pile in a penetrating mode, and the pile feeding pipe is aligned with the steel pipe pile structure. And the socket joint section is arranged in the steel pipe pile in a penetrating mode, so that the socket joint section can bear most of horizontal shearing force and bending moment load generated in the pile sinking process. And then the pile feeding pipe and the steel pipe pile are connected in a reinforcing manner through the first connecting piece and the second connecting piece, so that the pile feeding pipe and the steel pipe pile are fixedly connected in a double-connection manner, and the connection reliability of the pile feeding pipe and the steel pipe pile is improved. Socket joint section and steel-pipe pile are separable to wear to establish and are connected simultaneously, and first connecting piece and second connecting piece are for dismantling the connection to the dismantlement and the recovery of the pipe of being convenient for sending a pile, compare in the tradition through welded fastening's pile follower, the needs of this application after pile sinking completion have been avoided to the pile follower device cut the process of pipe under water, have reduced the underwater operation volume, have reduced the operation degree of difficulty and construction safety risk by a wide margin. And the detachable pile sending pipe can be repeatedly used, so that the material cost is saved. Simultaneously through setting up seal assembly between first connecting piece and second connecting piece, guaranteed the leakproofness of steel-pipe pile, compare in the mode of traditional cofferdam construction, the required secondary of cofferdam construction has been avoided to the pile follower device of this application and has sunk the construction, has further reduced the operation degree of difficulty and construction safety risk.

In one embodiment, a step surface is arranged between the hammering section and the socket section, and the step surface is used for being abutted against the end face of the steel pipe pile.

In one embodiment, the pile feeding device further comprises a threaded connection pair connecting the first connector and the second connector.

In one embodiment, the shock absorbing member is provided with a through hole, and the threaded connection pair is arranged in the through hole in a penetrating mode.

In one embodiment, the end of the socket section away from the hammering section is provided with a round angle.

In one embodiment, the sealing assembly comprises a first sealing ring, the first connecting piece is provided with a first mounting groove, the second connecting piece is provided with a second mounting groove, the first mounting groove and the second mounting groove are oppositely arranged, and two ends of the first sealing ring are respectively embedded in the first mounting groove and the second mounting groove.

In one embodiment, the sealing assembly further comprises a second sealing ring, the second sealing ring is coaxially arranged with the first sealing ring, and the second sealing ring is positioned on one side of the first sealing ring close to the pile driving pipe.

In one embodiment, the first connecting piece is provided with a first limiting groove, the second connecting piece is provided with a second limiting groove, the first limiting groove and the second limiting groove are oppositely arranged, and two ends of the second sealing ring are respectively embedded in the first limiting groove and the second limiting groove.

In one embodiment, the second seal ring is provided with a central hole along the circumference.

Drawings

FIG. 1 is a cross-sectional view of one embodiment of a pile feeder;

fig. 2 is an enlarged view of a portion a of the pile feeder shown in fig. 1.

Description of reference numerals:

110. pile conveying pipe; 110. a hammering section; 112. a socket section; 113. a step surface; 114. round corners; 121. a first connecting member; 122. a second connecting member; 123. a first mounting groove; 124. a second mounting groove; 125. a first limit groove; 126. a second limit groove; 130. the screw thread is connected to the pair; 131. a bolt; 132. a nut; 133. a gasket; 141. a first seal ring; 142. a second seal ring; 143. a central bore; 150. a shock absorbing member; 200. steel pipe piles; 310. a sea bed surface; 320. sea level.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.

Referring to fig. 1-2, embodiments of the present application provide a pile driving apparatus for driving a steel pipe pile 200 into a sea bed surface 310 in offshore wind power engineering. In particular, the pile driving device of an embodiment comprises a pile driving tube 110, a first connection 121, a second connection 122 and a sealing assembly. Wherein the pile driving pipe 110 is used for being installed to the top of the steel pipe pile 200, and the pile driving pipe 110 comprises a hammering section 110 and a socket section 112. The hammering section 110 is used for connecting an impact hammer to bear the hammering of the impact hammer and transmit the impact force of the impact hammer to the steel pipe pile 200, so that the steel pipe pile 200 can be sunk in place. Socket section 112 is continuous with hammering section 110 and connects, and socket section 112 is used for wearing to establish in the inner chamber of steel-pipe pile 200. The socket segment 112 is used for aligning the structure of the steel pipe pile 200 and bearing most of horizontal shear force and bending moment loads generated in the pile sinking process.

The first connecting member 121 is sleeved on the hammering block 110 and is fixedly connected with the hammering block 110. The second connecting piece 122 is used for being sleeved on the steel pipe pile 200 and fixedly connected with the steel pipe pile 200, and the second connecting piece 122 is detachably connected with the first connecting piece 121, so that the connection between the pile feeding pipe 110 and the steel pipe pile 200 is further reinforced.

The sealing assembly is arranged between the first connecting piece 121 and the second connecting piece 122, and the sealing assembly is connected with the first connecting piece 121 and the second connecting piece 122 in a sealing mode, so that the joint of the steel pipe pile 200 and the pile sending pipe 110 is sealed, and seawater is prevented from entering the steel pipe pile 200.

Further, the hammering section 110 extends out of the sea level 320, so that the hammering section 110 is connected to the impact hammer. The length of the hammering section 110 can be set according to the seawater depth of field construction. Socket section 112 is coaxially connected to hammer segment 110, and preferably socket section 112 is welded to hammer segment 110. The first connecting piece 121 and the second connecting piece 122 can be both connecting flanges, the first connecting piece 121 is welded at the bottom of the hammering section 110, and the second connecting piece 122 is pre-welded at the top of the steel pipe pile 200. The sealing assembly is of a closed annular structure, the sealing assembly is sleeved outside the insertion section, and two ends of the sealing assembly are respectively and tightly abutted to the first connecting piece 121 and the second connecting piece 122.

In the pile-feeding device, the socket section 112 is provided on the pile-feeding pipe 110, so that the socket section 112 is inserted into the steel pipe pile 200, and the pile-feeding pipe 110 is aligned with the steel pipe pile 200. And the socket segment 112 is inserted into the steel pipe pile 200, so that the socket segment 112 can bear most of horizontal shear force and bending moment load generated in the pile sinking process. And then the pile-feeding pipe 110 and the steel pipe pile 200 are connected in a reinforcing manner through the first connecting piece 121 and the second connecting piece 122, so that the pile-feeding pipe 110 and the steel pipe pile 200 are connected and fixed in a double-connection manner, and the connection reliability of the pile-feeding pipe 110 and the steel pipe pile 200 is improved. Socket joint section 112 and steel-pipe pile 200 are separable to wear to establish the connection simultaneously, and first connecting piece 121 and second connecting piece 122 are for dismantling the connection to be convenient for send the dismantlement and the recovery of stake pipe 110, compare in the tradition through welded fastening's pile follower, the needs of pile follower after the pile sinking completion of this application cut the process of pipe under water, have reduced underwater operation volume, have reduced the operation degree of difficulty and construction risk by a wide margin. And the detachable pile feeding pipe 110 can be reused, so that the material cost is saved. Simultaneously through setting up seal assembly between first connecting piece 121 and second connecting piece 122, guaranteed steel-pipe pile 200's leakproofness, compare in the mode of traditional cofferdam construction, the required secondary of cofferdam construction has been avoided to the pile feeding device of this application and has sunk the construction, has further reduced the operation degree of difficulty and construction risk.

Further, a step surface 113 is arranged between the hammering section 110 and the socket section 112, that is, the diameter of the socket section 112 is smaller than that of the hammering section 110, so that the step surface 113 is formed at the joint of the hammering section 110 and the socket section 112. The stepped surface 113 is used to abut against the end surface of the steel-pipe pile 200 to further improve the connection stability between the pile-feeder pipe 110 and the steel-pipe pile 200.

Further, one end of the socket segment 112 away from the hammering segment 110 is provided with a round corner 114, so that the socket segment 112 is prevented from scratching the steel pipe pile 200 during the insertion of the steel pipe pile 200.

Referring to fig. 2, the first connecting member 121 and the second connecting member 122 are respectively two connecting flanges which are matched with each other. The pile feeding device further comprises a screw coupling pair 130, the screw coupling pair 130 connecting the first connecting member 121 and the second connecting member 122. Specifically, the first connecting member 121 and the second connecting member 122 are both provided with connecting holes. The threaded connection 130 may be a bolt 131 connection. The screw connection pair 130 includes a bolt 131, a nut 132 and two washers 133, the bolt 131 is inserted into the connection hole of the first connection member 121 and the connection hole of the second connection member 122, and the two washers 133 are disposed at two ends of the bolt 131 at intervals and are respectively used for abutting against the first connection member 121 and the second connection member 122. The nut 132 is threadedly coupled to a rear portion of the bolt 131 to lock the bolt 131 to the first and

second connection members

121 and 122, thereby achieving detachable coupling of the first and

second connection members

121 and 122. Preferably, the screw pairs 130 are at least two sets, and preferably, the first connecting member 121 and the second connecting member 122 are provided with 12 sets of screw pairs 130 at intervals along the circumferential direction.

Referring to fig. 2, the pile driving apparatus further includes a shock-absorbing member 150, the shock-absorbing member 150 being disposed between the first connecting member 121 and the second connecting member 122. The shock absorbing member 150 serves to protect the sealing assembly from being crushed and deformed during the hammer pile driving process. Preferably, the shock absorbing member 150 is a rubber shock absorbing ring. The shock absorbing member 150 has a closed ring shape, and the shock absorbing member 150 is sleeved outside the socket section 112. The shock absorbing member 150 is provided with a through hole, and the threaded connection pair 130 is inserted into the through hole to fix the shock absorbing member 150.

Specifically, referring to fig. 2, the seal assembly includes a first seal ring 141, preferably, the first seal ring 141 is a closed ring-shaped structure. The first seal ring 141 is a rubber water stop ring having water-swelling properties. Further, the first connecting member 121 is provided with a first mounting groove 123, the second connecting member 122 is provided with a second mounting groove 124, and the first mounting groove 123 is disposed opposite to the second mounting groove 124. The two ends of the first sealing ring 141 are respectively embedded in the first mounting groove 123 and the second mounting groove 124, so that the first sealing ring 141 is sealed and matched with the first mounting groove 123 and the second mounting groove 124 after being expanded by water absorption to form a first water-proof barrier. Preferably, referring to fig. 2, the first and second mounting

grooves

123 and 124 are square grooves to facilitate the mounting of the first sealing ring 141.

Further, the sealing assembly further comprises a second sealing ring 142, the second sealing ring 142 is coaxially arranged with the first sealing ring 141, and the second sealing ring 142 is positioned on one side of the first sealing ring 141 close to the pile feeding pipe 110. The second sealing ring 142 is used as a second water barrier of the pile feeding device to further ensure the sealing performance of the steel pipe pile. Preferably, the second sealing ring 142 is a closed ring-shaped rubber water stop ring. The second seal ring 142 is provided with a central hole 143 along its circumference. The central hole 143 serves to increase the elastic deformability of the second sealing ring 142, preventing the second sealing ring 142 from being pulled or torn under pressure. Further, the first connecting member 121 is provided with a first limiting groove 125, the second connecting member 122 is provided with a second limiting groove 126, the first limiting groove 125 and the second limiting groove 126 are oppositely arranged, and two ends of the second sealing ring 142 are respectively embedded in the first limiting groove 125 and the second limiting groove 126. Preferably, the first and second limiting

grooves

125, 126 are annular grooves, and the cross sections of the first and second limiting

grooves

125, 126 are trapezoidal structures. The shapes of the two ends of the second sealing ring 142 are respectively matched with the cross-sectional shapes of the first limiting groove 125 and the second limiting groove 126, so that the sealing performance and the connection stability of the second sealing ring 142 are ensured.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A pile feeder apparatus, comprising:

2. The pile driving device according to claim 1, wherein a step surface is provided between the hammering section and the socket section, and the step surface is used for abutting against the end surface of the steel pipe pile.

3. Pile feeding device according to claim 1, characterized in that it further comprises a threaded coupling pair connecting the first and second coupling member.

4. Pile feeding device according to claim 3, characterized in that the pile feeding device further comprises a shock absorbing member arranged between the first and second connecting members.

5. The pile driving device according to claim 4, wherein the shock absorbing member is provided with a through hole, and the screw coupling pair is inserted into the through hole.

6. The pile follower of claim 1, wherein an end of the socket section remote from the hammer section is rounded.

7. The pile feeding device according to claim 1, wherein the sealing assembly comprises a first sealing ring, the first connecting member is provided with a first mounting groove, the second connecting member is provided with a second mounting groove, the first mounting groove is opposite to the second mounting groove, and two ends of the first sealing ring are respectively embedded in the first mounting groove and the second mounting groove.

8. The pile driving device according to claim 7, wherein the sealing assembly further comprises a second sealing ring, the second sealing ring is coaxially disposed with the first sealing ring, and the second sealing ring is disposed on a side of the first sealing ring close to the pile driving pipe, the first connecting member is provided with a first limiting groove, the second connecting member is provided with a second limiting groove, the first limiting groove and the second limiting groove are oppositely disposed, and two ends of the second sealing ring are respectively embedded in the first limiting groove and the second limiting groove.

9. The pile feeding device according to claim 8, wherein the first and second limiting grooves are both trapezoidal grooves, and the shape of both ends of the second sealing ring is matched with the cross-sectional shape of the first limiting groove and the cross-sectional shape of the second limiting groove, respectively.

10. Pile feeder according to claim 8, wherein the second sealing ring is provided with a central hole in its circumference.