CN113136865A

CN113136865A - Pile clamping device

Info

Publication number: CN113136865A
Application number: CN202110524736.9A
Authority: CN
Inventors: 张春翔; 宋放
Original assignee: Liaoning Futai Chemical Machinery Co ltd
Current assignee: Liaoning Futai Chemical Machinery Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-07-20

Abstract

The invention belongs to the technical field of auxiliary tools of offshore mining equipment, and particularly relates to a pile clamping device which comprises a frame ring and a plurality of clamping units which are distributed and fixedly arranged on the frame ring, wherein each clamping unit comprises a clamping cylinder body, a clamping piston and a flexible capsule body, the clamping piston is movably connected with one end inside the clamping cylinder body, the other end of the clamping cylinder body is provided with a bottom cover, the flexible capsule body is arranged between the clamping piston and the bottom cover, the flexible capsule body is provided with a first medium injection port, and the first medium injection port extends to the outer side of the clamping cylinder body. The capsule type structure is arranged in the clamping device, so that the pollution to the ocean is reduced while the stability of pile grouting is improved.

Description

Pile clamping device

Technical Field

The invention belongs to the technical field of auxiliary tools of offshore mining equipment, and particularly relates to a pile clamping device.

Background

In the process of offshore mining, a mining support needs to be arranged firstly, supporting legs at the lower end of the mining support need to be fixed in seabed sludge, sleeves are arranged at the lower ends of the supporting legs, piles penetrate through the sleeves to be driven into a seabed sludge layer, then slurry is poured between the piles and the sleeves, the piles and the sleeves are fixedly connected together after cement slurry is hardened, in the process of cement hardening, the relative positions of the piles do not shake greatly as much as possible, otherwise, the hardening process of the cement can be influenced, and the stability of the mining support on the seabed can be influenced.

Disclosure of Invention

In order to solve the technical problem, the invention provides a pile clamping device.

The invention is realized in such a way, and provides a pile clamping device which comprises a frame ring and a plurality of clamping units which are distributed and fixedly arranged on the frame ring, wherein each clamping unit comprises a clamping cylinder body, a clamping piston and a flexible capsule body, the clamping piston is movably connected with one end inside the clamping cylinder body, the other end of the clamping cylinder body is provided with a bottom cover, the flexible capsule body is arranged between the clamping piston and the bottom cover, the flexible capsule body is provided with a first medium injection port, and the first medium injection port extends to the outer side of the clamping cylinder body.

Preferably, press from both sides the inner wall one end of pressing from both sides tight cylinder body and establish inner wall annular joint arch, the bellied internal diameter of annular joint with the external diameter that presss from both sides tight piston anterior segment matches, and the afterbody that presss from both sides tight piston is equipped with outer wall annular joint arch, and the bellied external diameter of outer wall annular joint matches with pressing from both sides tight cylinder body middle section internal diameter.

Preferably, an annular cavity is formed among the clamping cylinder body, the inner wall annular clamping protrusion, the clamping piston and the outer wall annular clamping protrusion, an annular reverse thrust capsule is arranged in the annular cavity, a second medium injection port is arranged on the reverse thrust capsule, and the second medium injection port penetrates through the side wall of the clamping cylinder body; the medium in the flexible capsule body and the reverse thrust capsule is water.

Further preferably, a clamping jaw structure is arranged on the outer end face of the clamping piston.

Further preferably, the clamping jaw structure comprises a clamping jaw, a base plate and a fixing screw, a groove is formed in the outer end face of the clamping piston, the base plate is arranged on the bottom face of the groove, the clamping jaw is pressed on the base plate, the fixing screw penetrates through the clamping jaw and the base plate and then extends into the clamping piston, and the outer end face of the clamping jaw is a concave-convex face.

Preferably, a snap ring is arranged on the inner wall of the clamping cylinder body, and the snap ring is arranged on the outer side of the bottom cover.

Further preferably, a through hole is formed in the bottom cover, and the first medium injection port in the flexible capsule body extends out of the through hole in the bottom cover.

Preferably, an annular limiting bulge is arranged on the outer side of one end, close to the pile, of the clamping cylinder body; between all the clamping units, a medium injection line is connected in series.

Further preferably, at least one energy accumulator is further arranged on the outer wall of the frame ring, the energy accumulator is fixedly mounted on the frame ring through a mounting frame, and the energy accumulator is connected with the first medium injection port of the flexible capsule body.

Compared with the prior art, the invention has the advantages that:

1) the pile can be clamped in the grouting process, the pile is kept still in the cement slurry hardening process, the cement slurry hardening process is accelerated, and the cement slurry hardening quality is improved;

2) by designing the capsule structure, the medium leakage is prevented, and the environmental pollution caused by the medium leakage after a long time can be avoided;

3) water or gas is used as a pressure medium, even if leakage occurs, the seawater cannot be polluted, and the possibility of pollution to the ocean caused by offshore mining is reduced.

Drawings

FIG. 1 is a top view of a pile driver;

FIG. 2 is a side view of the pile driver;

FIG. 3 is a structural view of a clamping unit provided in embodiment 1;

fig. 4 is a structural view of a clamping unit provided in embodiment 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Examples 1,

Referring to fig. 1, 2 and 3, the present embodiment provides a pile clamping device, which includes a frame ring 1 and a plurality of clamping units 2 distributed and fixed on the frame ring 1, a lower end of the frame ring 1 is fixed at an upper end of a buoy, each clamping unit 2 includes a clamping cylinder 201, a clamping piston 202 and a flexible capsule 203, the clamping piston 202 is movably connected with one end inside the clamping cylinder 201, the other end of the clamping cylinder 201 is provided with a bottom cover 204, the flexible capsule 203 is arranged between the clamping piston 202 and the bottom cover 204, the flexible capsule 203 is provided with a first medium injection port 2031, and the first medium injection port 2031 extends to an outer side of the clamping cylinder 201.

In the working process, after the pile descends to the right position, a medium is injected into the flexible capsule body 203 through the first medium inlet 2031, the flexible capsule body 203 is supported, the flexible capsule body 203 ejects the clamping piston 202, the clamping piston 202 moves outwards along the inner wall of the clamping cylinder 201 until the outer end of the clamping piston 202 props the pile, all the clamping units 2 move synchronously, the pile keeps a vertical state and is not moved, and cement grouting can be performed.

For the joint clamping piston 202, as technical scheme's improvement, inner wall annular joint protrusion 2011 is established to the inner wall one end that presss from both sides tight cylinder body 201, the protruding 2011's of annular joint internal diameter with the external diameter that presss from both sides tight piston 202 anterior segment matches, and the afterbody that presss from both sides tight piston 202 is equipped with outer wall annular joint protrusion 2021, and the external diameter that outer wall annular joint protrusion 2021 matches with the internal diameter of pressing from both sides tight cylinder body 201 middle section.

In order to improve the pile gripping action of the gripping piston 202, a jaw structure 4 is provided on the outer end face of the gripping piston 202.

Specifically, in order to realize the detachability of the jaw structure 4, as an improvement of the technical scheme, the jaw structure 4 includes a jaw 401, a pad 402 and a fixing screw 403, a groove is formed in the outer end surface of the clamping piston 202, the pad 402 is arranged on the bottom surface of the groove, the jaw 401 is pressed on the pad 402, the fixing screw 403 penetrates through the jaw 401 and the pad 402 and then extends into the clamping piston 402, and the outer end surface of the jaw 401 is a concave-convex surface.

Since the flexible capsule body 203 has very high pressure during the expansion process, in order to prevent the flexible capsule body from pushing the bottom cover 204 open, as a technical improvement, a snap ring 5 is arranged on the inner wall of the clamping cylinder body 201, and the snap ring 5 is arranged on the outer side of the bottom cover 204.

As a preferable design structure, a through hole is formed in the bottom cover 204, and the first medium injection port 2031 of the flexible capsule body 203 extends out from the through hole of the bottom cover 204. Facilitating the injection of the medium into the capsule by the medium injection system.

In order to clamp the clamping cylinder 201 on the frame ring 1 for limiting and simultaneously inject media into the capsule body of the clamping unit, as an improvement of the technical scheme, an annular limiting bulge 2012 is arranged on the outer side of one end, close to the pile, of the clamping cylinder 201; between all the clamping units 2, a medium injection line 6 is connected in series.

At least one energy accumulator 7 is further arranged on the outer wall of the frame ring 1, the energy accumulator 7 is fixedly mounted on the frame ring 1 through a mounting frame 8, and the energy accumulator 7 is connected with the first medium injection port 2031 of the flexible capsule body 203. In bad weather, when the ship is out of service, the accumulator 7 supplements the flexible capsule 203 of each clamping unit 2 with medium.

Examples 2,

Referring to fig. 1, 2 and 4, the present embodiment provides a pile driver, which is different from embodiment 1 in that:

in order to realize the disassembly of the pile clamping device, as an improvement of the technical scheme, an annular cavity is formed among the clamping cylinder body 201, the inner wall annular clamping protrusion 2011, the clamping piston 202 and the outer wall annular clamping protrusion 2021, an annular reverse thrust capsule 3 is arranged in the annular cavity, a second medium injection port is arranged on the reverse thrust capsule 3, and the second medium injection port penetrates through the side wall of the clamping cylinder body 201; the medium in the flexible capsule body 203 and the reverse thrust capsule 3 is water.

When the fixing is finished and the disassembly is needed, the medium is injected into the reverse thrust capsule 3 through the second medium injection port 301, the reverse thrust capsule 3 is supported, the medium is extracted outwards through the first medium inlet 2031, and under the action of the reverse thrust capsule 3, the clamping piston 202 is pushed to move backwards and is far away from the pile body.

Claims

1. The utility model provides a pile clamping device, characterized in that, including frame circle (1) and a plurality of clamping unit (2) of fixed setting on frame circle (1) of distribution, clamping unit (2) are including pressing from both sides tight cylinder body (201), press from both sides tight piston (202) and flexible capsule body (203), press from both sides tight piston (202) and press from both sides tight cylinder body (201) inside one end swing joint, press from both sides tight cylinder body (201) other end and set up bottom (204), flexible capsule body (203) set up between pressing from both sides tight piston (202) and bottom (204), be equipped with first medium filling opening (2031) on the flexible capsule body (203), first medium filling opening (2031) stretches to and presss from both sides tight cylinder body (201) outside.

2. The pile clamping device according to claim 1, wherein an inner wall annular clamping protrusion (2011) is arranged at one end of the inner wall of the clamping cylinder body (201), the inner diameter of the annular clamping protrusion (2011) is matched with the outer diameter of the front section of the clamping piston (202), an outer wall annular clamping protrusion (2021) is arranged at the tail of the clamping piston (202), and the outer diameter of the outer wall annular clamping protrusion (2021) is matched with the inner diameter of the middle section of the clamping cylinder body (201).

3. The pile clamping device according to claim 2, wherein an annular cavity is formed among the clamping cylinder body (201), the inner wall annular clamping protrusion (2011), the clamping piston (202) and the outer wall annular clamping protrusion (2021), an annular reverse thrust capsule (3) is arranged in the annular cavity, a second medium injection port is arranged on the reverse thrust capsule (3), and the second medium injection port penetrates through the side wall of the clamping cylinder body (201); the medium in the flexible capsule body (203) and the reverse thrust capsule (3) is water.

4. A pile driver according to claim 1, characterised in that on the outer end face of the clamping piston (202) there is provided a jaw structure (4).

5. The pile driver according to claim 4, wherein the jaw structure (4) comprises a jaw (401), a base plate (402) and a fixing screw (403), a groove is formed in the outer end face of the clamping piston (202), the base plate (402) is arranged on the bottom face of the groove, the jaw (401) is pressed on the base plate (402), the fixing screw (403) penetrates through the jaw (401) and the base plate (402) and then extends into the clamping piston (402), and the outer end face of the jaw (401) is a concave-convex face.

6. A pile driver according to claim 1, characterized in that a snap ring (5) is provided on the inner wall of the clamping cylinder (201), the snap ring (5) being provided on the outer side of the bottom cover (204).

7. The device according to claim 1, wherein a through hole is provided in the bottom cover (204), and the first medium injection port (2031) of the flexible capsule body (203) extends from the through hole of the bottom cover (204).

8. The pile driver according to claim 1, wherein an annular limiting bulge (2012) is arranged on the outer side of the clamping cylinder (201) close to one end of the pile; between all the clamping units (2) there is connected in series a medium injection line (6).

9. The pile driver according to claim 1, characterized in that at least one energy accumulator (7) is arranged on the outer wall of the frame ring (1), the energy accumulator (7) is fixedly mounted on the frame ring (1) through a mounting frame (8), and the energy accumulator (7) is connected with the first medium injection port (2031) of the flexible capsule body (203).