Construction structure for nondestructive removal of old pile by full casing full-rotation drilling machine

Abstract

The utility model relates to the technical field of old pile nondestructive pulling out, disclose a full casing full slewing drilling machine old pile nondestructive pulling out construction structure, including embedding in the soil and surrounding the sleeve of old pile periphery, the full slewing drilling machine of driving sleeve rotation and the grab bucket of the old pile of torsional fracture from the pulling out of soil, the annular interval has between sleeve and old pile, the annular interval is along the circumferential arrangement of old pile, the annular interval is embedded with the hammer, and the old pile is relatively fixedly connected with the sleeve by the hammer, when old pile and sleeve are relatively fixedly connected through the hammer, the full slewing drilling machine drives sleeve rotation, and old pile is torsional fracture, and the old pile is torsional fracture and is pulled out under the cooperation of the fixed holding of the hammer and the grab bucket, not only improve the construction efficiency of old pile pulling out, and due to the characteristics of full slewing drilling machine, make the construction process more stable and safe, also avoid the common noise and vibration problem, reduce the interference to the surrounding environment.

Description

Technical Field

[0001] This utility model patent relates to the technical field of non-destructive removal of old piles, specifically to a construction structure for non-destructive removal of old piles using a full-casing full-rotation drilling rig. Background Technology

[0002] In recent years, with the rapid development of the domestic economy, the number of construction projects related to the renovation of old urban areas, municipal construction, and subway tunnel shield tunneling in large and medium-sized cities has increased rapidly. During the construction of the foundation engineering of new projects, the old reinforced concrete structures and abandoned pile foundations that remain underground are often encountered, which bring great obstacles and difficulties to the construction of the projects.

[0003] To ensure the smooth progress of construction projects, abandoned obstacles are usually removed or removed without affecting the surrounding infrastructure environment. For old foundations and pier foundations with shallow burial depth, direct slope excavation is usually adopted, and mechanical demolition is carried out after the old foundation is fully exposed. However, for old piles with deep burial depth, excavation and removal are difficult to achieve.

[0004] In existing technologies, traditional treatment methods often employ impact crushing and in-situ removal using rotary drilling rigs. Impact crushing involves using a rotary drilling rig equipped with a cross-shaped impact hammer to crush the old pile on-site. The debris from the old pile is then carried out of the hole through mud circulation before new pile construction can proceed. In-situ removal using rotary drilling rigs involves drilling directly at the location of the old pile. The rotary drilling rig uses a cutting tooth crushing drill bit to break and fracture the pile concrete and reinforcing cage in sections until the old pile is completely removed. Traditional methods of removing old piles are time-consuming and costly due to the high strength of the old pile concrete and the influence of the pile's reinforcing cage. Utility Model Content

[0005] The purpose of this utility model is to provide a construction structure for non-destructive extraction of old piles using a full-casing full-rotation drilling rig, aiming to solve the problem of low construction efficiency in the existing technology for extracting old piles.

[0006] This utility model is implemented as follows: a construction structure for non-destructive removal of old piles using a full-casing full-rotation drilling rig, characterized in that it includes a casing embedded in the soil and surrounding the old pile, a full-rotation drilling rig that drives the casing to rotate, and a grab bucket that pulls the twisted old pile out of the soil. The casing and the old pile have an annular gap, which is arranged around the circumference of the old pile.

[0007] A chisel hammer is embedded in the annular interval, and the chisel hammer fixes the old pile to the casing in a relatively fixed manner. After the old pile and the casing are fixedly connected by the chisel hammer, the full-rotation drilling rig drives the casing to rotate and twists the old pile off.

[0008] Furthermore, the bottom of the casing is provided with multiple downward-facing cutting edges, which are arranged at intervals around the circumference of the casing.

[0009] Furthermore, the casing has a bottom opening, and the inner wall of the casing is provided with a plurality of inner cutting edges that are arranged toward the old pile and cut the soil. The plurality of inner cutting edges are arranged around the casing at intervals along the circumference.

[0010] Furthermore, the top of the hammer is provided with a connecting seat, and a chain connected to the lifting equipment is attached to the connecting seat.

[0011] Furthermore, the chisel has an outer side facing the sleeve, the outer side being arc-shaped, and the outer side abutting against the inner wall of the sleeve.

[0012] Furthermore, the chisel hammer has an inner side facing the old pile, the inner side being inclined, and along the top-to-bottom direction of the chisel hammer, the inner side is inclined away from the old pile.

[0013] Furthermore, multiple inner grooves are formed on the inner side surface, the inner grooves extending along the height direction of the chisel hammer, and the multiple inner grooves are arranged at intervals along the circumference of the old pile; adjacent inner grooves form inner ridges that abut against the outer circumference of the old pile.

[0014] Furthermore, the chisel hammer has side surfaces formed on both sides, with the front end of the side surface abutting the inner side surface and the rear end of the side surface abutting the outer side surface.

[0015] Furthermore, the side surface is arranged vertically, the width of the inner side surface is smaller than the width of the outer side surface, and the side surface is arranged obliquely along the direction from the inside to the outside of the chisel hammer.

[0016] Furthermore, two spaced-apart lower base plates are laid on the soil, with the two lower base plates located on both sides of the old pile; two spaced-apart upper base plates are laid between the two lower base plates, with the two upper base plates located on both sides of the old pile; the two upper base plates and the two lower base plates enclose a central area for the sleeve to pass through, the central area being located above the old pile and aligned vertically with the old pile.

[0017] Compared with the existing technology, the full-casing full-rotation drilling rig construction structure for non-destructive removal of old piles provided by this utility model can achieve 360-degree rotation of the casing driven by the full-rotation drilling rig by embedding the casing in the soil and surrounding the old pile. Since the casing does not require mud wall protection, there is no need for mud treatment, which improves construction efficiency and reduces pollution.

[0018] An annular gap is provided between the casing and the old pile, which is arranged around the circumference of the old pile. This ensures the stability of the structure and the flexibility of operation. The chisel hammer embedded in the annular gap can fix the old pile and the casing relatively and provide a solid foundation for the torsion of the old pile.

[0019] After the hammer is fixed, the old pile is broken by the powerful torque of the full-rotation drilling rig, and then the old pile is removed by the grab bucket. This process not only improves the construction efficiency of old pile removal, but also makes the construction process more stable and safe due to the characteristics of the full-rotation drilling rig. It also avoids common noise and vibration problems and reduces interference to the surrounding environment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the construction structure for non-destructive removal of old piles using a full-casing full-rotation drilling rig provided by this utility model.

[0021] Figure 2 This is a construction diagram of the grab bucket provided by this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the chisel hammer provided by this utility model;

[0023] Figure 4 This is a schematic diagram of the side structure of the chisel hammer provided by this utility model;

[0024] In the diagram: Soil 100, old pile 101, annular spacer 102, lower base plate 103, upper base plate 104, central area 105, grab bucket 106, full-rotation drilling rig 200, casing 201, bottom cutting edge 202, inner cutting edge 203, lifting equipment 204, chisel hammer 300, connecting seat 301, outer side 302, inner side 303, inner groove 304, inner rib 305, side side 306. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0027] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0028] Reference Figure 1-4 The image shown is a preferred embodiment of the present invention.

[0029] The construction structure for non-destructive removal of old piles by a full-casing full-rotation drilling rig includes a casing 201 embedded in the soil 100 and surrounding the old pile 101, a full-rotation drilling rig 200 that drives the casing 201 to rotate, and a grab bucket 106 that pulls the twisted old pile 101 out of the soil 100. There is an annular gap 102 between the casing 201 and the old pile 101, and the annular gap 102 is arranged around the circumference of the old pile 101.

[0030] A chisel hammer 300 is embedded in the annular interval 102. The chisel hammer 300 fixes the old pile 101 to the casing 201 in a relatively fixed manner. After the old pile 101 and the casing 201 are fixedly connected by the chisel hammer 300, the full-rotation drilling rig 200 drives the casing 201 to rotate and twist the old pile 101 off.

[0031] The above-mentioned full-casing full-rotation drilling rig for non-destructive removal of old piles, through the casing 201 embedded in the soil 100 and surrounding the outer periphery of the old pile 101, can achieve 360-degree rotation of the casing 201 driven by the full-rotation drilling rig 200. Since the casing 201 does not require mud wall protection, there is no need for mud treatment, which improves construction efficiency and reduces pollution.

[0032] An annular spacer 102 is provided between the sleeve 201 and the old pile 101, which is arranged around the circumference of the old pile 101. This ensures the stability of the structure and the flexibility of operation. The chisel hammer 300 embedded in the annular spacer 102 can fix the old pile 101 and the sleeve 201 relatively, providing a solid foundation for the torsion breakage of the old pile 101.

[0033] After the drill bit 300 is fixed, the powerful torque of the full-rotation drilling rig 200 is used to break the old pile 101, and then the grab bucket 106 is used to remove the old pile 101. This process not only improves the construction efficiency of removing the old pile 101, but also makes the construction process more stable and safe due to the characteristics of the full-rotation drilling rig 200. It also avoids common noise and vibration problems and reduces interference to the surrounding environment.

[0034] In this embodiment, the bottom of the casing 201 is provided with multiple bottom cutting edges 202 that cut downwards into the soil 100. The multiple bottom cutting edges 202 are arranged around the circumference of the casing 201 at intervals. This improves the penetration power and stability of the casing 201, enabling the casing 201 to penetrate the soil layer more quickly and approach the old pile 101, thereby improving the construction efficiency of removing the old pile 101.

[0035] In this embodiment, the bottom of the sleeve 201 has a bottom opening, and the inner sidewall of the sleeve 201 is provided with a plurality of inner cutting edges 203 that are arranged towards the old pile 101 and cut the soil 100. The plurality of inner cutting edges 203 are arranged around the sleeve 201 at intervals in the circumference. In this way, when the sleeve 201 is inserted into the soil 100, it can more accurately surround the old pile 101, effectively cut and remove the soil 100 around the old pile 101, which provides convenience for the subsequent old pile 101 removal work and further improves the construction efficiency.

[0036] In this embodiment, the top of the chisel hammer 300 is provided with a connecting seat 301, and a chain connected to the lifting equipment 204 is connected to the connecting seat 301. By setting the connecting seat 301, the chisel hammer 300 can be easily connected to the lifting equipment 204, which facilitates the installation and removal of the chisel hammer 300. This not only simplifies the construction process and reduces manual operation, but also improves the safety and efficiency of construction.

[0037] In this embodiment, the chisel hammer 300 has an outer side 302 facing the sleeve 201. The outer side 302 is arc-shaped and abuts against the inner sidewall of the sleeve 201. The arc shape makes the contact between the chisel hammer 300 and the sleeve 201 closer, which enhances the stability of the chisel hammer 300 in the sleeve 201 and helps to transmit torque more effectively, thereby providing a solid foundation for breaking the old pile 101.

[0038] In this embodiment, the chisel hammer 300 has an inner side 303 facing the old pile 101. The inner side 303 is inclined. Along the top-to-bottom direction of the chisel hammer 300, the inner side 303 is inclined away from the old pile 101. This allows the chisel hammer 300 to generate greater shear force when rotating inside the sleeve 201, which helps to more effectively break the old pile 101 and improves the efficiency and effect of construction.

[0039] In this embodiment, a plurality of inner grooves 304 are formed on the inner side 303. The inner grooves 304 extend along the height direction of the chisel hammer 300 and are arranged at intervals along the circumference of the old pile 101. An inner rib 305 is formed between adjacent inner grooves 304 to abut against the outer periphery of the old pile 101. This increases the friction between the chisel hammer 300 and the old pile 101, so that the chisel hammer 300 can grip the old pile 101 more firmly when rotating inside the sleeve 201, thereby improving the efficiency of breaking the old pile 101.

[0040] In this embodiment, the chisel hammer 300 has side surfaces 306 formed on both sides. The front end of the side surface 306 is connected to the inner side surface 303, and the rear end of the side surface 306 is connected to the outer side surface 302. This makes the structure of the chisel hammer 300 more stable, which helps to maintain the shape and position of the chisel hammer 300 when the old pile 101 is twisted off, thus improving the stability and efficiency of construction.

[0041] In this embodiment, the side surface 306 is arranged vertically, the width of the inner side surface 303 is smaller than the width of the outer side surface 302, and the side surface 306 is arranged at an angle along the direction from the inside to the outside of the chisel hammer 300. This angled arrangement helps to generate greater torque when the chisel hammer 300 rotates, making it easier to break the old pile 101, thereby improving construction efficiency.

[0042] In this embodiment, two spaced-apart lower base plates 103 are laid on the soil 100, with the two lower base plates 103 located on both sides of the old pile 101; two spaced-apart upper base plates 104 are laid between the two lower base plates 103, with the two upper base plates 104 located on both sides of the old pile 101; the two upper base plates 104 and the two lower base plates 103 enclose a central region 105 through which the sleeve 201 passes. The central region 105 is located above the old pile 101 and is vertically aligned with the old pile 101. By setting the upper and lower base plates 103, a stable support platform is provided for the sleeve 201, ensuring the stability of the sleeve 201 during construction. The central region 105 exposes the old pile 101 within the working field of vision, which can improve the accuracy of construction and also help improve the construction safety of removing the old pile 101.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A construction structure for non-destructive extraction of old piles using a full-casing, full-rotation drilling rig, characterized in that: It includes a casing embedded in the soil and surrounding the old pile, a full-rotation drilling rig that drives the casing to rotate, and a grab bucket that pulls the twisted old pile out of the soil. The casing and the old pile have an annular gap, which is arranged around the circumference of the old pile. A chisel hammer is embedded in the annular interval, and the chisel hammer fixes the old pile to the casing in a relatively fixed manner. After the old pile and the casing are fixedly connected by the chisel hammer, the full-rotation drilling rig drives the casing to rotate and twists the old pile off.

2. The construction structure for non-destructive extraction of old piles using a full-casing full-rotation drilling rig as described in claim 1, characterized in that, The bottom of the casing is provided with multiple downward-facing cutting edges, which are arranged at intervals around the circumference of the casing.

3. The construction structure for non-destructive extraction of old piles using a full-casing full-rotation drilling rig as described in claim 2, characterized in that, The casing has a bottom opening, and the inner wall of the casing is provided with a plurality of inner cutting edges that are arranged toward the old pile and cut the soil. The plurality of inner cutting edges are arranged around the casing at intervals along the circumference.

4. The construction structure for non-destructive extraction of old piles using a full-casing full-rotation drilling rig as described in claim 1, characterized in that, The top of the chisel hammer is provided with a connecting seat, and a chain connected to the lifting equipment is connected to the connecting seat.

5. The construction structure for non-destructive extraction of old piles using a full-casing full-rotation drilling rig as described in claim 4, characterized in that, The chisel has an outer side facing the casing, the outer side being arc-shaped, and the outer side abutting against the inner wall of the casing.

6. The construction structure for non-destructive extraction of old piles using a full-casing full-rotation drilling rig as described in claim 5, characterized in that, The chisel hammer has an inner side facing the old pile, the inner side being inclined, and along the top-to-bottom direction of the chisel hammer, the inner side is inclined away from the old pile.

7. The construction structure for non-destructive extraction of old piles using a full-casing full-rotation drilling rig as described in claim 6, characterized in that, Multiple inner grooves are formed on the inner side surface, and the inner grooves extend along the height direction of the chisel hammer. The multiple inner grooves are arranged at intervals along the circumference of the old pile. An inner ridge is formed between adjacent inner grooves that abuts against the outer circumference of the old pile.

8. The construction structure for non-destructive extraction of old piles using a full-casing full-rotation drilling rig as described in any one of claims 1-7, characterized in that, The chisel hammer has side surfaces on both sides, with the front end of the side surface abutting the inner side surface and the rear end of the side surface abutting the outer side surface.

9. The construction structure for non-destructive extraction of old piles using a full-casing full-rotation drilling rig as described in claim 8, characterized in that, The side faces are arranged vertically, the width of the inner side face is smaller than the width of the outer side face, and the side faces are arranged obliquely along the direction from the inside to the outside of the chisel hammer.

10. The construction structure for non-destructive extraction of old piles using a full-casing full-rotation drilling rig as described in any one of claims 1-7, characterized in that, Two spaced-apart lower base plates are laid on the soil, with the two lower base plates located on both sides of the old pile; two spaced-apart upper base plates are laid between the two lower base plates, with the two upper base plates located on both sides of the old pile; the two upper base plates and the two lower base plates enclose a central area for the sleeve to pass through, the central area being located above the old pile and aligned vertically with the old pile.

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