Steel pipe pile sinking device and construction method thereof

Abstract

This invention discloses a steel pipe pile driving device, comprising: a pile stabilizing frame; a first pile gripping assembly, which is horizontally arranged and protrudes from the upper side of the pile stabilizing frame, the first pile gripping assembly including two first fixed arms and two first movable arms, which together form a first receiving cavity, the first receiving cavity being provided with multiple guide plates, each guide plate being hinged to the inner wall of the first receiving cavity, and multiple first hydraulic telescopic rods being provided on the lower outer side of the first receiving cavity, each first hydraulic telescopic rod being configured to be compressed by a rotatable guide plate; a second pile gripping assembly, which is located below the first pile gripping assembly, the second pile gripping assembly including two second fixed arms and two second movable arms, which together form a second receiving cavity, the outer side of the second receiving cavity being provided with multiple second hydraulic telescopic rods spaced apart, each second hydraulic telescopic rod communicating with the oil cavity of an adjacent first hydraulic telescopic rod; and a pile driving construction method. This invention has the advantages of simultaneously centering and positioning the steel pipe pile during its lowering.

Description

Technical Field

[0001] This invention relates to the field of steel pipe pile construction. More specifically, this invention relates to a steel pipe pile driving device and its construction method. Background Technology

[0002] In steel pipe pile driving operations, a pile clamping assembly is typically used to clamp and position the steel pipe pile to improve its verticality. The process generally involves first feeding the steel pipe pile into the clamping assembly using a crane, then closing the assembly. A telescopic mechanism located around the circumference of the clamping assembly then adjusts the verticality of the steel pipe pile to ensure coaxiality between the pile and the assembly. For large-diameter steel pipe piles, due to their large diameter and weight, this method of feeding the pile first and then adjusting results in low construction efficiency and high construction costs. Summary of the Invention

[0003] One object of the present invention is to provide a steel pipe pile driving device to at least solve the above-mentioned problems.

[0004] To achieve the objectives and other advantages of this invention, a steel pipe pile driving device is provided, comprising: a pile stabilizing frame, which is vertically arranged; and a first pile gripping assembly, which is horizontally arranged and protrudes from the upper side of the pile stabilizing frame. The first pile gripping assembly includes two first fixed arms and two first movable arms, which together form a first receiving cavity. Multiple guide plates are spaced circumferentially within the first receiving cavity. Each guide plate is radially arranged within the first receiving cavity and hinged to the inner wall of the first receiving cavity. Multiple first hydraulic telescopic arms are spaced circumferentially below the outer side of the first receiving cavity. The first hydraulic telescopic rod is arranged radially along the first receiving cavity and is configured to be compressed by the rotatable guide plate. The second pile-holding assembly is located below the first pile-holding assembly and is arranged parallel to and opposite to the first pile-holding assembly. The second pile-holding assembly includes two second fixed arms and two second movable arms, which together form a second receiving cavity. A plurality of second hydraulic telescopic rods are spaced apart on the outer side of the second receiving cavity. Each second hydraulic telescopic rod is arranged radially along the second receiving cavity and is connected to the oil cavity of the adjacent first hydraulic telescopic rod through a first pipeline.

[0005] Preferably, the steel pipe pile driving device further includes a third pile clamping assembly, which includes two third fixed arms and two third movable arms. The two third fixed arms and two third movable arms together form a third receiving cavity. Multiple third hydraulic telescopic rods are spaced apart on the outer side of the third receiving cavity, and each third hydraulic telescopic rod is arranged radially along the third receiving cavity.

[0006] Preferably, in the steel pipe pile driving device, the top surfaces of the plurality of guide plates enclose a first circular groove, and the bottom surface of the first circular groove is an inclined surface that slopes downward toward its center.

[0007] Preferably, in the steel pipe pile driving device, the free end of the guide plate is fitted with a guide roller.

[0008] Preferably, in the steel pipe pile driving device, the pile stabilizing frame is provided with a first construction platform and a second construction platform respectively, opposite to the first pile clamping component and the second pile clamping component.

[0009] Preferably, in the steel pipe pile driving device, a first valve is provided on the first pipeline; a hydraulic oil regulating tank is provided on the first construction platform, and an inlet pump and an outlet pump are respectively provided on the hydraulic oil regulating tank. The inlet of the inlet pump is connected to the first interface of a three-way valve, and the outlet is connected to the hydraulic oil regulating tank. The inlet of the outlet pump is connected to the hydraulic oil regulating tank, and the outlet is connected to the second interface of the three-way valve. The third interface of the three-way valve is connected to a second pipeline that is connected to the oil chamber of the first hydraulic telescopic rod through the main pipeline.

[0010] The present invention also provides a pile driving construction method using the above-mentioned steel pipe pile driving device, comprising:

[0011] Step 1: Submerge the stabilizing frame in the water and level and straighten it.

[0012] Step 2: Close the first and second pile clamping components, and open the third pile clamping component;

[0013] Step 3: Hoist the steel pipe pile into the first and second pile clamping assemblies. After the steel pipe pile is initially aligned by the first and second pile clamping assemblies, it is gradually lowered to the bottom of the water. Then, the third pile clamping assembly is closed, and the steel pipe pile is aligned a second time by the third pile clamping assembly.

[0014] Step 4: Use a hydraulic hammer to drive the steel pipe piles.

[0015] The present invention has at least the following beneficial effects:

[0016] This invention, by setting multiple guide plates and multiple first hydraulic telescopic rods on the first pile-holding assembly and multiple second hydraulic telescopic rods on the second pile-holding assembly, and connecting the first and second hydraulic telescopic rods through a first pipeline, enables the steel pipe pile to drive multiple guide plates, multiple first hydraulic telescopic rods, and multiple second hydraulic telescopic rods to move and cooperate with each other while the steel pipe pile is being lowered, thereby achieving centering and positioning of the steel pipe pile, greatly improving construction efficiency and reducing construction costs.

[0017] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a steel pipe pile driving device according to an embodiment of the present invention;

[0019] Figure 2 This is a top view of the first pile-holding assembly in a closed state according to an embodiment of the present invention;

[0020] Figure 3 This is a top view of the first pile-holding assembly in the open state according to an embodiment of the present invention;

[0021] Figure 4 yes Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0022] Figure 5 This is a top view of the second pile-holding assembly in a closed state according to an embodiment of the present invention;

[0023] Figure 6 This is a top view of the second pile-holding assembly in the open state according to an embodiment of the present invention;

[0024] Figure 7 This is a top view of the third pile-holding assembly in a closed state according to an embodiment of the present invention. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the embodiments and accompanying drawings, so that those skilled in the art can implement it based on the description.

[0026] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0027] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified. In the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] like Figures 1-7 As shown, an embodiment of the present invention provides a steel pipe pile driving device, including: a pile stabilizing frame 1, which is vertically arranged; and a first pile gripping assembly 2, which is horizontally arranged and protrudes from the upper side of the pile stabilizing frame 1. The first pile gripping assembly 2 includes two first fixed arms 201 and two first movable arms 202. The two first fixed arms 201 and the two first movable arms 202 together form a first receiving cavity. A plurality of guide plates 203 are arranged circumferentially within the first receiving cavity. Each guide plate 203 is arranged radially along the first receiving cavity and is hinged to the inner wall of the first receiving cavity. A plurality of first hydraulic telescopic rods 204 are arranged circumferentially below the outer side of the first receiving cavity. 4. The guide plate 203 is arranged radially along the first receiving cavity and is configured to be compressible by the rotatable guide plate 203; the second pile clamping assembly 3 is located below the first pile clamping assembly 2 and is arranged parallel to and opposite to the first pile clamping assembly 2. The second pile clamping assembly 3 includes two second fixed arms 301 and two second movable arms 302. The two second fixed arms 301 and the two second movable arms 302 together form a second receiving cavity 303. A plurality of second hydraulic telescopic rods 304 are spaced apart on the outer side of the second receiving cavity 303. Each second hydraulic telescopic rod 304 is arranged radially along the second receiving cavity 303 and is connected to the oil cavity of the adjacent first hydraulic telescopic rod 204 through a first pipe 305.

[0029] In the above embodiments, the steel pipe pile driving device includes a pile stabilizing frame 1, a first pile clamping assembly 2, and a second pile clamping assembly 3. The pile stabilizing frame 1 is vertically arranged and has the ability to be leveled and straightened; specifically, the pile stabilizing frame 1 includes a vertically arranged cuboid truss, the four columns of the cuboid truss are configured as hollow steel sleeves, and positioning piles are inserted into the hollow steel sleeves. A horizontally arranged anti-sinking plate is fixed at the bottom of the cuboid truss, and multiple pontoons are also fixed on the hollow steel sleeves below the anti-sinking plate. By adjusting the buoyancy of the pontoons, the pile stabilizing frame can be leveled and straightened. The first pile-holding assembly 2 is horizontally positioned, with one end fixedly connected to the upper side of the pile-stabilizing frame 1, and the other end protruding from the pile-stabilizing frame 1. The first pile-holding assembly 2 includes two first fixed arms 201 and two first movable arms 202. The two first fixed arms 201 are connected end-to-end and fixed to the pile-stabilizing frame 1, while the two first movable arms 202 protrude from the pile-stabilizing frame 1. One end of each of the two movable arms 202 is hinged to the free end of an adjacent first fixed arm 201, and is driven to rotate around the free end of the first fixed arm 201 via a hydraulic drive rod, allowing the first pile-holding assembly 2 to open or close. Specifically, the two first fixed arms 201 and two... The first movable arms 202 together form a square first receiving cavity. Four guide plates 203 are arranged circumferentially inside the first receiving cavity. Each side wall of the first receiving cavity is provided with a guide plate 203. Each guide plate 203 is arranged axially along the first receiving cavity and is hinged to the inner wall of the first receiving cavity. A return torsion spring is provided on the hinge axis. Four first hydraulic telescopic rods 204 are arranged circumferentially below the outer side of the first receiving cavity. One guide plate 203 corresponds to one first hydraulic telescopic rod 204. Each first hydraulic telescopic rod 204 is arranged axially along the first receiving cavity and is configured to be compressed by the corresponding rotatable guide plate 203. The second pile-holding assembly 3 includes two second fixed arms 301 and two second movable arms 302. The two second fixed arms 301 are connected end to end and fixed on the pile stabilizing frame 1. The two second movable arms 302 protrude from the pile stabilizing frame 1, and one end of each of the two movable arms 302 is hinged to the free end of the adjacent second fixed arm 301. They are driven to rotate around the free end of the second fixed arm 301 by a hydraulic drive rod, so that the second pile-holding assembly 3 can be opened or closed. Specifically, the two second fixed arms 301 and the two second movable arms 302 together form a circular second receiving cavity. Four second hydraulic telescopic rods 304 are spaced apart on the outer side of the second receiving cavity 303. Each second hydraulic telescopic rod 304 corresponds to a first hydraulic telescopic rod 204 and is parallel to it. Each second hydraulic telescopic rod 304 is arranged radially along the second receiving cavity 303 and is connected to the oil cavity of the corresponding first hydraulic telescopic rod 204 through a first pipe 305.

[0030] During construction, the first and second pile-holding assemblies are closed first, and then the steel pipe pile is hoisted. When the bottom of the steel pipe pile touches the guide plate of the first pile-holding assembly, the guide plate opens under the action of the steel pipe pile. As the steel pipe pile is lowered, the first hydraulic telescopic rod is compressed under the action of the guide plate, causing the hydraulic oil in the first hydraulic telescopic rod to enter the second hydraulic telescopic rod through the first pipeline. The second hydraulic telescopic rod extends and squeezes the side wall of the steel pipe pile. When the steel pipe pile is tilted, the rotation angle of the guide plate on the tilted side is greater, resulting in a greater compression distance of the corresponding first hydraulic telescopic rod and a longer extension distance of the second hydraulic telescopic rod. The corresponding second hydraulic telescopic rod squeezes the steel pipe pile to the opposite side. Since multiple guide plates, multiple first hydraulic telescopic rods, and multiple second hydraulic telescopic rods are symmetrically arranged at circumferential intervals along the first pile-holding assembly or multiple second pile-holding assemblies, the steel pipe pile can be centered and positioned simultaneously with its lowering through the cooperation of multiple guide plates, multiple first hydraulic telescopic rods, and multiple second hydraulic telescopic rods.

[0031] This invention, by setting multiple guide plates and multiple first hydraulic telescopic rods on the first pile-holding assembly and multiple second hydraulic telescopic rods on the second pile-holding assembly, and connecting the first and second hydraulic telescopic rods through a first pipeline, enables the steel pipe pile to drive multiple guide plates, multiple first hydraulic telescopic rods, and multiple second hydraulic telescopic rods to move and cooperate with each other while the steel pipe pile is being lowered, thereby achieving centering and positioning of the steel pipe pile, greatly improving construction efficiency and reducing construction costs.

[0032] In another embodiment, the steel pipe pile driving device further includes a third pile clamping assembly 4, which includes two third fixed arms 401 and two third movable arms 402. The two third fixed arms 401 and the two third movable arms 402 together form a circular third receiving cavity 403. The diameter of the third receiving cavity 403 is not greater than the diameter of the second receiving cavity 303. A plurality of third hydraulic telescopic rods 404 are spaced apart on the outer side of the third receiving cavity 403, and each third hydraulic telescopic rod 404 is arranged radially along the third receiving cavity 403.

[0033] In this embodiment, in addition to the first and second pile clamping components, a third pile clamping component is added below the second pile clamping component. During construction, the third pile clamping component is first opened, and the steel pipe pile is fed into the third pile clamping component after being aligned and positioned by the first and second pile clamping components. Then the third pile clamping component is closed, and the steel pipe pile is located in the third receiving cavity. The position of the steel pipe pile is finely adjusted by multiple third hydraulic telescopic rods arranged around the third receiving cavity, and the steel pipe pile is re-aligned and positioned to improve the verticality of the steel pipe pile.

[0034] In another embodiment, the steel pipe pile driving device has a first circular groove 205 formed by the top surfaces of the plurality of guide plates 203, and the bottom surface of the first circular groove 205 is an inclined surface that slopes downward toward its center.

[0035] In this embodiment, a first circular groove is formed by setting a first circular groove on the top surface of multiple guide plates, and the bottom surface of the first circular groove is set as an inclined surface that slopes downward toward its center, so as to limit and guide the steel pipe pile being lowered by the inclined surface.

[0036] Furthermore, the free end of the guide plate 203 is embedded with a guide roller, so that after the steel pipe pile passes through the first pile clamping assembly, the guide plate contacts the side wall of the steel pipe pile through the guide roller, thereby reducing the friction between the guide plate and the steel pipe pile during the lowering process and protecting the steel pipe pile.

[0037] In another embodiment, the steel pipe pile driving device has a first construction platform 5 and a second construction platform 6 respectively provided on the pile stabilizing frame 1 opposite to the first pile clamping component 2 and the second pile clamping component 3, so as to facilitate the maintenance of the first pile clamping component and the second pile clamping component through the first construction platform and the second construction platform.

[0038] Furthermore, a first valve is provided on the first pipeline 305; a hydraulic oil regulating tank 7 is provided on the first construction platform 5, and an inlet pump and an outlet pump are respectively provided on the hydraulic oil regulating tank 7. The inlet of the inlet pump is connected to the first interface of a three-way valve, and the outlet is connected to the hydraulic oil regulating tank 7. The inlet of the outlet pump is connected to the hydraulic oil regulating tank 7, and the outlet is connected to the second interface of the three-way valve. The third interface of the three-way valve is connected to a second pipeline that is connected to the oil chamber of the first hydraulic telescopic rod 204 through the main pipeline.

[0039] In this embodiment, a hydraulic oil regulating tank is added to the first construction platform, and a first valve, an inlet pump, an outlet pump, a three-way valve, a main pipeline, and a second pipeline are provided to facilitate adding or removing oil from the oil chamber of the first hydraulic telescopic rod according to the diameter of the steel pipe pile, thereby improving the versatility of the device. Specifically, the default extension distance of the first hydraulic telescopic rod is A0, corresponding to a steel pipe pile diameter of R0. When the diameter of the steel pipe pile to be installed is R1 (R1 > R0), the first valve is closed and the inlet pump is started, allowing the hydraulic oil in the oil chamber of the first hydraulic telescopic rod to enter the hydraulic oil regulating tank through the second pipeline, the main pipeline, the third interface of the three-way valve, the first interface of the three-way valve, and the inlet pump, thus adjusting the extension distance of the first hydraulic telescopic rod to A1 (A1 < A0). When the diameter of the steel pipe pile to be installed is R2 (R2 < R0), the first valve is closed and the outlet pump is started, allowing the hydraulic oil in the hydraulic oil regulating tank to enter the oil chamber of the first hydraulic telescopic rod through the outlet pump, the second interface of the three-way valve, the main pipeline, and the second pipeline, thus adjusting the extension distance of the first hydraulic telescopic rod to A2 (A2 > A0). Here, A0, A1, A1, R0, and R1 are...

[0040] Both R2 and R2 are determined based on the actual situation.

[0041] The present invention also provides a pile driving construction method using the above-mentioned steel pipe pile driving device, comprising:

[0042] Step 1: Submerge the stabilizing frame 1 in the water and level and straighten it.

[0043] Step 2: Close the first pile clamping assembly 2 and the second pile clamping assembly 3, and open the third pile clamping assembly 4;

[0044] Step 3: Hoist the steel pipe pile into the first pile clamping assembly 2 and the second pile clamping assembly 3. After the steel pipe pile is initially aligned by the first pile clamping assembly 2 and the second pile clamping assembly 3, it is gradually lowered to the bottom of the water. Then, close the third pile clamping assembly 4 and perform a second alignment of the steel pipe pile by the third pile clamping assembly 4.

[0045] Step 4: Use a hydraulic hammer to drive the steel pipe piles into the ground. The hammering process shall be carried out in accordance with existing construction methods.

[0046] Using the pile driving construction method of the present invention, the verticality deviation of the steel pipe pile before hammer driving does not exceed 0.5‰, and the verticality deviation of the steel pipe pile after pile driving does not exceed 2.0‰.

[0047] The number of devices and processing scale described herein are for the purpose of simplifying the description of the invention. Applications, modifications, and variations of the steel pipe pile driving device and its construction method of the present invention will be readily apparent to those skilled in the art.

[0048] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A steel pipe pile driving device, characterized in that, include: The pile stabilizing frame includes a vertically arranged rectangular truss. The four columns of the rectangular truss are hollow steel sleeves, and positioning piles are inserted into the hollow steel sleeves. A horizontally arranged anti-sinking plate is fixed at the bottom of the rectangular truss. Multiple pontoons are fixed on the hollow steel sleeves below the anti-sinking plate. The pile stabilizing frame is leveled and straightened by adjusting the buoyancy of the pontoons. The first pile-holding assembly is horizontally positioned. One end of the first pile-holding assembly is fixedly connected to the upper side of the pile-stabilizing frame, and the other end protrudes from the pile-stabilizing frame. The first pile-holding assembly includes two first fixed arms and two first movable arms. The two first fixed arms are connected end to end and fixed to the pile-stabilizing frame. The two first movable arms protrude from the pile-stabilizing frame, and one end of each of the two first movable arms is hinged to the free end of the adjacent first fixed arm. The movable arms are driven by a hydraulic drive rod to rotate around the free end of the first fixed arm, so that the first pile-holding assembly can be opened or closed. When the two first fixed arms and the two first movable arms are closed, a first receiving cavity is formed. Four guide plates are spaced apart circumferentially inside the first receiving cavity. Each side wall of the first receiving cavity is provided with a guide plate. Each guide plate is arranged radially along the first receiving cavity and is hinged to the inner wall of the first receiving cavity. A return torsion spring is provided on the hinge shaft. Four first hydraulic telescopic rods are spaced apart circumferentially on the lower outer side of the first receiving cavity. One guide plate corresponds to one first hydraulic telescopic rod. Each first hydraulic telescopic rod is arranged radially along the first receiving cavity and is configured to be compressed by the corresponding rotating guide plate. The second pile-holding assembly is located below the first pile-holding assembly and is parallel and opposite to the first pile-holding assembly. The second pile-holding assembly includes two second fixed arms and two second movable arms. The two second fixed arms are connected end to end and fixed on the pile-stabilizing frame. The two second movable arms protrude from the pile-stabilizing frame, and one end of each of the two movable arms is hinged to the free end of the adjacent second fixed arm. They are driven by a hydraulic drive rod to rotate around the free end of the second fixed arm, so that the second pile-holding assembly can be opened or closed. When the two second fixed arms and the two second movable arms are closed, they form a second receiving cavity. Four second hydraulic telescopic rods are arranged at intervals on the outside of the second receiving cavity. Each second hydraulic telescopic rod corresponds to a first hydraulic telescopic rod and is parallel to it. Each second hydraulic telescopic rod is arranged radially along the second receiving cavity and is connected to the oil cavity of the corresponding first hydraulic telescopic rod through a first pipeline. The third pile-holding assembly includes two third fixed arms and two third movable arms, which together form a third receiving cavity. Multiple third hydraulic telescopic rods are spaced apart on the outer side of the third receiving cavity, and each third hydraulic telescopic rod is arranged radially along the third receiving cavity. A first valve is provided on the first pipeline; a first construction platform is provided on the pile stabilizing frame opposite to the first pile clamping assembly; a hydraulic oil regulating tank is provided on the first construction platform, and an inlet pump and an outlet pump are respectively provided on the hydraulic oil regulating tank. The inlet of the inlet pump is connected to the first interface of a three-way valve, and the outlet is connected to the hydraulic oil regulating tank. The inlet of the outlet pump is connected to the hydraulic oil regulating tank, and the outlet is connected to the second interface of the three-way valve. The third interface of the three-way valve is connected to a second pipeline that is connected to the oil chamber of the first hydraulic telescopic rod through the main pipeline.

2. The steel pipe pile driving device as described in claim 1, characterized in that, The top surfaces of the four guide plates together form a first circular groove, and the bottom surface of the first circular groove is an inclined surface that slopes downward toward its center.

3. The steel pipe pile driving device as described in claim 2, characterized in that, The free end of the guide plate is fitted with a guide roller.

4. The steel pipe pile driving device as described in claim 1, characterized in that, A second construction platform is provided on the pile stabilizing frame opposite to the second pile clamping component.

5. A pile driving construction method using the steel pipe pile driving device as described in any one of claims 1-4, characterized in that, include: Step 1: Submerge the stabilizing frame in the water and level and straighten it. Step 2: Close the first and second pile clamping components, and open the third pile clamping component; Step 3: Hoist the steel pipe pile into the first and second pile clamping assemblies. After the steel pipe pile is initially aligned by the first and second pile clamping assemblies, it is gradually lowered to the bottom of the water. Then, the third pile clamping assembly is closed, and the steel pipe pile is aligned a second time by the third pile clamping assembly. Step 4: Use a hydraulic hammer to drive the steel pipe piles.

Images