CN110904964A

CN110904964A - Double-oil-cylinder clamping structure and vibrating pile hammer

Info

Publication number: CN110904964A
Application number: CN201911159562.XA
Authority: CN
Inventors: 曹小骥; 曹荣夏; 崔少华; 史小军; 郭建飞; 曹鹏
Original assignee: Shanghai Zhenzhong Construction Machinery Technology Co Ltd
Current assignee: Shanghai Zhenzhong Construction Machinery Technology Co Ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-03-24

Abstract

The invention discloses a double-oil-cylinder clamping structure which comprises two clamping blocks, wherein the two clamping blocks are respectively connected with a clamping oil cylinder, and the clamping oil cylinder can drive the clamping blocks to move back and forth. The double-oil-cylinder clamping block is adopted for large-diameter thick-wall tubular piles, the clamping force of the double-oil-cylinder clamping block is larger than that of the single-oil-cylinder clamping block, so that the tubular piles are clamped more tightly, and pile sinking operation is facilitated.

Description

Double-oil-cylinder clamping structure and vibrating pile hammer

Technical Field

The invention relates to the field of building foundation engineering, in particular to a double-oil-cylinder clamping structure and a vibrating pile hammer.

Background

At present, the movable pile sinking clamping blocks adopt single oil cylinder clamping blocks as shown in figure 1. The clamping block structure is that one end of the clamping plate is connected with the piston rod of the clamping oil cylinder, and the other end of the clamping plate is connected with the piston rod of the clamping oil cylinder, so that the pile pipe can be clamped or loosened to perform pile sinking operation only by operating the oil cylinder.

With the development of onshore and offshore construction scale and offshore wind power, the diameter and the wall thickness of the tubular pile are larger and larger, and the clamping force of the single oil cylinder clamping block cannot be fully exerted due to the structure relationship. With the increase of the diameter and the wall thickness of the pile pipe, the difference between the curvature of the pile diameter and the curvature of the clamping block is larger, the integral and local deformation of the pile diameter is more difficult, and the clamping force on the pile is reduced, so that the pile sinking effect is influenced.

Disclosure of Invention

The invention discloses a double-oil-cylinder clamping structure and a vibrating pile hammer, which are used for adapting to the clamping problem of a large-diameter thick-wall pile pipe, in particular to an offshore wind power foundation pile.

The invention adopts the following technical scheme:

a double-oil-cylinder clamping structure comprises two clamping blocks, wherein the two clamping blocks are respectively connected with a clamping oil cylinder, and the clamping oil cylinder can drive the clamping blocks to move back and forth.

The clamping block is provided with sawteeth.

A vibrating pile hammer comprises the double-oil-cylinder clamping structure.

The double-oil-cylinder clamping device further comprises a clamping block cross beam, and the double-oil-cylinder clamping structure is fixed on the clamping block cross beam.

The clamping oil cylinder is fixed on the clamping block cross beam.

The clamping block further comprises a vibration hammer, and the vibration hammer is fixed on the clamping block cross beam.

The pile pipe clamping device is characterized by further comprising a pile pipe, the clamping block can clamp the pile pipe under the driving of the clamping oil cylinder, and the pile pipe can vibrate up and down under the driving of the vibration hammer.

The invention has the advantages that: the clamping force of the double-oil-cylinder clamping block adopted for the large-diameter thick-wall tubular pile is larger than that of the single-oil-cylinder clamping block, so that the tubular pile is clamped more tightly, and the pile sinking operation is facilitated.

Drawings

The invention is described in detail below with reference to examples and figures, in which:

fig. 1 is a schematic view of a prior art structure of the present invention.

Fig. 2 is a schematic sectional structure of fig. 1.

Fig. 3 is a schematic structural view of the clamping block clamping thin-wall pipes.

Fig. 4 is a schematic structural diagram of the present invention.

FIG. 5 is a schematic diagram of a single cylinder clamp block for clamping thick-walled pipes.

FIG. 6 is a schematic diagram of a structure of a double-cylinder clamping block clamping a thick-walled pipe.

Fig. 7 is a structural schematic view of a clamping state of the clamping block of the invention.

Fig. 8 is a structural view showing a released state of the clamping block of the present invention.

Detailed Description

The following further illustrates embodiments of the invention:

as shown in fig. 4, 7 and 8, the double-cylinder clamping structure comprises two clamping blocks 5, wherein the two clamping blocks 5 are respectively connected with a clamping cylinder 3, and the clamping cylinder 3 can drive the clamping blocks 5 to move back and forth. The clamping blocks are provided with serrations 51.

The invention also discloses a vibrating pile hammer which comprises the double-oil-cylinder clamping structure. The double-oil-cylinder pile driving device further comprises a clamping block beam 2, a vibration hammer 1 and a pile pipe 4, and the double-oil-cylinder clamping structure is fixed on the double-oil-cylinder pile driving device. The clamping oil cylinder is fixed on the clamping block cross beam. The vibration hammer 1 is fixed on the clamping block beam 2. The clamping block 5 can clamp the pile pipe 4 under the driving of the clamping oil cylinder 3, and the pile pipe 4 can vibrate up and down under the driving of the vibration hammer 1.

The double-side clamping blocks of the double-clamping oil cylinder are connected with the piston rods of the clamping oil cylinders and can move freely. When the piston rod of the oil cylinder extends and is clamped, the whole deformation of the pile diameter is small, the local deformation of the pile pipe is also small, but the depth of the teeth on the clamping block embedded into the pipe wall is larger than that of the teeth of the clamping block of the single oil cylinder, B is larger than A when the teeth are embedded into the pipe wall, and B is larger than A when the teeth are compared in the figures, as shown in figures 5 and 6. Therefore, the clamping force of the double-oil-cylinder clamping block adopted for the large-diameter thick-wall tubular pile is larger than that of the single-oil-cylinder clamping block, so that the tubular pile is clamped more tightly, and the pile sinking operation is facilitated.

The double-oil-cylinder clamping block is adopted, so that clamping is tight and reliable, as shown in the figure, the outer diameter of the double-oil-cylinder clamping block inner clamping block can be smaller than that of the single-oil-cylinder clamping block inner clamping block, and the double-oil-cylinder clamping block can be conveniently inserted into a pile pipe during pile sinking.

When the pile is sunk, the inner clamping block of the clamping block is adjusted to be a little smaller than the diameter of the pile pipe, and the outer clamping block is positioned at the retraction position of the piston rod of the oil cylinder, so that the clamping oil cylinder can be conveniently inserted into the pile pipe. When a clamping cylinder piston rod extends outwards to clamp the pipe wall during pile sinking, the pile pipe can generate two kinds of deformation, wherein firstly, the pile pipe deforms, the diameters of two sides on a clamping block become smaller, and secondly, the pipe wall generates local deformation due to the fact that the curvature of the clamping block is different from that of the pile pipe, the general difference of the curvatures is large, and the dotted line local deformation is shown in figure 4.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The double-oil-cylinder clamping structure is characterized by comprising two clamping blocks, wherein the two clamping blocks are respectively connected with a clamping oil cylinder, and the clamping oil cylinder can drive the clamping blocks to move back and forth.

2. The dual cylinder clamping structure of claim 1, wherein said clamping block is provided with serrations.

3. A vibro-hammer comprising the dual cylinder clamp arrangement of claim 1 or 2.

4. The vibro-hammer according to claim 1, further comprising a clamp block cross-beam, and the dual cylinder clamp structure is fixed thereto.

5. The vibro-hammer according to claim 4, characterized by the clamp cylinder fixed to the clamp block cross beam.

6. The vibro-hammer according to claim 4, further comprising a vibro-hammer, and said vibro-hammer is fixed to said clamping block beam.

7. A vibro-hammer according to claim 6, characterized by further comprising a pile tube, and the clamping block can clamp the pile tube driven by the clamping cylinder, and the pile tube can vibrate up and down driven by the vibro-hammer.