Pile pulling clamp device

Abstract

The pile pulling clamp device comprises a thick steel ring, a plurality of sets of first holes and second holes are evenly formed in the top end of the thick steel ring in a penetrating mode, a connecting assembly is arranged at the top of the thick steel ring, the connecting assembly comprises a wear-resisting gasket and a thin steel ring, and the wear-resisting gasket is fixedly installed at the top end of the thick steel ring. The clamp body can be recycled, only the wear-resistant gasket needs to be replaced in time for subsequent repeated utilization, and certain economic benefits are achieved; the danger coefficient of traditional pile pulling construction is high, connection with a hoisted object in the hoisting process is serious, and the construction safety is effectively improved while the work efficiency is improved through the clamp; the clamp body is fixed through the hole, the thick steel ring and the arc steel plate, compared with traditional single steel plate hole limiting, the safety is greatly improved, the clamp can adapt to most pile foundations, the whole pile body and a steel wire rope can be evenly stressed during pile pulling, and the requirements of workers are met.

Description

Technical Field

[0001] The present invention relates to the technical field of pile pulling, and in particular to a pile pulling clamp device. Background Art

[0002] When buildings are old and abandoned and need to be demolished, or when existing buildings affect project construction, pile removal work will be carried out. During the process of removing the pile, due to the pile's own heavy weight and deep length, it is easy to be subjected to uneven force, which will eventually cause the pile to fall off.

[0003] The existing pile pulling process that relies on the pile body steel bars as the load-bearing structure is mainly full-tube rotary cutting pile pulling. The pile foundation is first twisted off, and when pulling the pile, the exposed steel bars at the pile head are inserted into the hole of the rectangular clamp with holes, and then the pile pulling machine is connected with a wire rope to pull the pile. In this method, the clamp is easily damaged and there is a risk of the pile falling off. In addition, during the transportation process, the clamp is easily subjected to uneven force, which makes it difficult to meet the needs of the staff. To a certain extent, the practicality of the clamp itself is reduced. Summary of the invention

[0004] In order to solve the above technical problems, a pile pulling clamp device is provided. The technical solution solves the problem that the existing pile pulling process that relies on the pile body steel bars as the load-bearing structure proposed in the above background technology is mainly full-sleeve rotary cutting pile pulling, first the pile foundation is twisted off, and when pulling the pile, the steel bars exposed by the pile head are inserted into the holes of the rectangular clamp with holes, and then the pile pulling machine is connected with a wire rope to pull the pile. In this method, the clamp is easily damaged and there is a risk of the pile falling off, and the clamp is easily subjected to uneven force during transportation.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: A pile pulling clamp device comprises a thick steel ring, a top of which is evenly penetrated by a plurality of groups of first holes and second holes, a top of which is provided with a connecting assembly, the connecting assembly comprising a wear-resistant gasket and a thin steel ring, the wear-resistant gasket being fixedly mounted on the top of the thick steel ring, and a side of the wear-resistant gasket away from the thick steel ring being connected to the thin steel ring, a plurality of groups of arc steel plates being evenly arranged at the outer ring of the thick steel ring, and the thickness of the thin steel ring is smaller than that of the thick steel ring.

[0006] Preferably, a first through groove is formed through the middle portion of the top end of the thick steel ring.

[0007] Preferably, a plurality of groups of arc grooves are evenly distributed on the circumferential surface of the thick steel ring.

[0008] Preferably, a plurality of groups of arc steel rings are fixedly connected on the circumferential surface of the thick steel ring.

[0009] Preferably, a third through groove is formed through the middle of the top end of the wear-resistant gasket, and a plurality of groups of third holes are formed evenly through the top end of the wear-resistant gasket.

[0010] Preferably, a second through groove is opened through the middle of the top end of the thin steel ring, and a plurality of groups of fourth holes are evenly opened through the top end of the thin steel ring.

[0011] Preferably, the inner diameter of the second through groove is the same as the inner diameter of the third through groove, and the inner diameter of the first through groove is larger than the inner diameter of the second through groove.

[0012] Preferably, the arc steel plate is fixedly connected to the outer ring of the thick steel ring by bolts.

[0013] Preferably, the inner diameter of the first hole is greater than the inner diameter of the second hole.

[0014] Preferably, the center of the first through groove, the center of the first hole and the center of the arc groove are on the same straight line.

[0015] Compared with the prior art, the present invention provides a pile pulling fixture device, which has the following beneficial effects: The clamp body in the present invention can be recycled, and only the wear-resistant gasket needs to be replaced in time for subsequent multiple uses, which has certain economic benefits. The traditional pile pulling construction has a high risk factor, and the connection with the hoisted object is the top priority during the hoisting process. This clamp improves the work efficiency while also effectively improving the safety of construction. The clamp body has holes, and is fixed with three means of thick steel rings and arc steel plates. Compared with the traditional single steel plate hole limiter, the safety is greatly enhanced, and it can adapt to most pile foundations. When pulling out the pile, it can keep the force on the entire pile body and the wire rope uniform, meeting the needs of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention in a disassembled state; Figure 3 It is a schematic diagram of the structure of the thick steel ring of the present invention; Figure 4 It is a schematic structural diagram of the thick steel ring in the present invention from another perspective.

[0017] The numbers in the figure are: 1. thick steel ring; 101. first hole; 102. second hole; 103. first through groove; 104. arc steel ring; 105. arc groove; 2. Connecting assembly; 201. Wear-resistant gasket; 202. Third hole; 203. Thin steel ring; 204. Fourth hole; 205. Second through groove; 206. Third through groove; 3. Arc steel plate. DETAILED DESCRIPTION

[0018] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0019] Please refer to Figure 1-4 As shown, a pile pulling clamp device comprises a thick steel ring 1, a top of the thick steel ring 1 is evenly penetrated with a plurality of groups of first holes 101 and second holes 102, a top of the thick steel ring 1 is provided with a connecting assembly 2, a first through groove 103 is penetrated through the middle of the top of the thick steel ring 1, a plurality of groups of arc grooves 105 are evenly penetrated on the circumferential surface of the thick steel ring 1, and a plurality of groups of arc steel rings 104 are fixedly connected on the circumferential surface of the thick steel ring 1.

[0020] A plurality of groups of arc steel plates 3 are evenly arranged at the outer ring position of the thick steel ring 1 , and the arc steel plates 3 are fixedly connected to the outer ring of the thick steel ring 1 by bolts.

[0021] The thick steel ring 1 is a specially made high-strength thick steel ring. A first hole 101 and a second hole 102 are staggered and equidistantly distributed in the middle of the steel ring body. There are 12 holes in each group. The diameter of the large hole is slightly larger than the pile steel bar by 1-2mm. The small hole is a threaded hole. There are 12 circular arc grooves 105 and 12 circular arc steel rings 104 on the edge of the steel ring, which are staggered and equidistantly distributed. The arc length of the circular arc groove 105 is one-third of the circumference.

[0022] The connecting assembly 2 includes a wear-resistant gasket 201 and a thin steel ring 202. The wear-resistant gasket 201 is fixedly mounted on the top of the thick steel ring 1, and the side of the wear-resistant gasket 201 away from the thick steel ring 1 is connected to the thin steel ring 202. The thickness of the thin steel ring 202 is smaller than that of the thick steel ring 1. A third through groove 206 is formed in the middle of the top of the wear-resistant gasket 201. A plurality of groups of third holes 202 are evenly formed in the top of the wear-resistant gasket 201. The middle of the top of the thin steel ring 202 A second through groove 205 is penetrated, and a plurality of fourth holes 204 are evenly penetrated at the top of the thin steel ring 202. The inner diameter of the second through groove 205 is the same as the inner diameter of the third through groove 206. The inner diameter of the first through groove 103 is larger than the inner diameter of the second through groove 205. The inner diameter of the first hole 101 is larger than the inner diameter of the second hole 102. The center of the first through groove 103, the center of the first hole 101 and the center of the arc groove 105 are on the same straight line.

[0023] The connecting component 2 consists of a special thin steel ring 202 and a wear-resistant gasket 201. The special thin steel ring 202 and the wear-resistant gasket 201 have the same size. The third holes 202 and the fourth holes 204 are both 12 groups, and their sizes are consistent with the second holes 102, and their positions can correspond one-to-one with the second holes 102. The outer diameter of the thin steel ring 202 is consistent with the outer diameter of the thick steel ring 1, and the inner diameter is slightly larger than the inner diameter of the thick steel ring 1.

[0024] During construction, the overall construction sequence is: select 12 exposed steel bars of the pile body that are equidistantly distributed along the circumference of the pile cross section, insert the steel bars into the first hole 101 on the thick steel ring 1 in the clamp, fix the thick steel ring 1 in the clamp horizontally with an external bracket, and manually bend the steel bars 180° along the arc groove 105 (the arc groove 105 plays a role in positioning and fixing); turn the arc groove 105 in the clamp downward and cover it on the thick steel ring 1 in the clamp (the gasket increases the friction between the clamp and the steel bars), align the holes one by one, insert high-strength bolts and tighten them. When tightening the bolts, pay attention to tightening them symmetrically in pairs, and calibrate them in real time through a level; then align the thin steel ring 202 with the bolt hole position on the thick steel ring 1, clamp the steel bars in the arc groove 105, and finally tie them to the arc steel plate 3 of the clamp with a steel wire rope, and use a crane to pull out the piles for transportation, which is convenient and quick.

[0025] In summary, the clamp body in the present invention can be recycled, and only the wear-resistant gasket 201 needs to be replaced in time for subsequent multiple uses, which has certain economic benefits; and the traditional pile pulling construction has a high risk factor, and the connection with the hoisted object is of utmost importance during the hoisting process, and this clamp improves the work efficiency while also effectively improving the safety of construction; the clamp body has holes, and is fixed by three means, namely a thick steel ring 1 and an arc steel plate 3. Compared with the traditional single steel plate hole limiter, the safety is greatly enhanced, and it can adapt to most pile foundations, and can keep the force on the entire pile body and the wire rope uniform when pulling out the pile, meeting the needs of the staff.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A pile pulling fixture, characterized in that: The invention comprises a thick steel ring (1), wherein a plurality of groups of first holes (101) and second holes (102) are uniformly penetrated through the top of the thick steel ring (1), a connecting assembly (2) is arranged on the top of the thick steel ring (1), and the connecting assembly (2) comprises a wear-resistant gasket (201) and a thin steel ring (202), the wear-resistant gasket (201) is fixedly mounted on the top of the thick steel ring (1), and a side of the wear-resistant gasket (201) away from the thick steel ring (1) is connected to the thin steel ring (202), and a plurality of groups of arc steel plates (3) are uniformly arranged at the outer ring position of the thick steel ring (1), and the thickness of the thin steel ring (202) is smaller than that of the thick steel ring (1).

2. A pile pulling fixture according to claim 1, characterized in that: A first through groove (103) is formed through the middle of the top end of the thick steel ring (1).

3. A pile pulling fixture according to claim 1, characterized in that: A plurality of groups of arc grooves (105) are evenly arranged on the circumferential surface of the thick steel ring (1).

4. A pile pulling fixture according to claim 1, characterized in that: A plurality of groups of arc steel rings (104) are fixedly connected to the circumferential surface of the thick steel ring (1).

5. The pile pulling fixture device according to claim 1, characterized in that: A third through groove (206) is formed through the middle of the top end of the wear-resistant gasket (201), and a plurality of groups of third holes (202) are formed evenly through the top end of the wear-resistant gasket (201).

6. A pile pulling fixture according to claim 1, characterized in that: A second through groove (205) is formed through the middle of the top end of the thin steel ring (202), and a plurality of groups of fourth holes (204) are formed evenly through the top end of the thin steel ring (202).

7. A pile pulling fixture according to claim 6, characterized in that: The inner diameter of the second through groove (205) is the same as the inner diameter of the third through groove (206), and the inner diameter of the first through groove (103) is greater than the inner diameter of the second through groove (205).

8. The pile pulling fixture device according to claim 1, characterized in that: The arc steel plate (3) is fixedly connected to the outer ring of the thick steel ring (1) by means of bolts.

9. The pile pulling fixture device according to claim 1, characterized in that: The inner diameter of the first hole (101) is greater than the inner diameter of the second hole (102).

10. The pile pulling fixture device according to claim 3, characterized in that: The center of the first through groove (103), the center of the first hole (101) and the center of the circular arc groove (105) are on the same straight line.

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