Pile pulling equipment for pulling out ground barrier
By using Larssen sheet piles and high-pressure water jetting devices to assist in the removal of ground obstacle piles, the problem of low efficiency in traditional methods has been solved, achieving precise control of the pile removal range and environmentally friendly construction results.
Patent Information
- Application Number
- CN202423110691.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing methods for removing ground obstacle piles are inefficient, involve a large amount of engineering work, and cause serious environmental damage, especially since they are difficult to remove efficiently under different geological conditions.
The Larssen sheet piles and pile heads form a ring structure, which is combined with a high-pressure water jetting device and anti-tipping rings. By precisely controlling the pile extraction range, one-way plates and blade edges are used to assist in the extraction of the ground obstacle piles.
It enables precise control of the pile extraction range, reduces environmental damage, is applicable to different geological conditions and pile types, and reduces costs and construction time.
Smart Images
Figure CN223867234U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, and in particular to a pile-removing device for removing ground obstacles. Background Technology
[0002] Ground obstacle piles are a common tool in foundation construction, used to reinforce the foundation and bear the weight of buildings. However, in actual engineering projects, the removal of ground obstacle piles often faces numerous difficulties, especially when large-scale excavation and backfilling are required, resulting in a massive workload and low efficiency. Different geological conditions, such as soft soil layers, hard soil layers, and rock layers, present different challenges to pile foundation construction and pile removal. For example, in soft soil layers, the pile tends to adhere tightly to the surrounding soil, increasing the difficulty of removal; while in rock layers, special breaking tools and methods may be required to remove the pile. Underground obstacles, such as rocks, old wells, and abandoned foundations, are also significant reasons for the difficulty in handling ground obstacle piles. These obstacles not only increase the difficulty of construction but may also pose potential threats to surrounding buildings and underground pipelines. Therefore, a detailed underground obstacle survey must be conducted before construction, and the construction plan must be adjusted according to the obstacle conditions.
[0003] Traditional methods for removing ground obstacle piles often involve large-scale excavation, which is not only labor-intensive but also inefficient. The excavation process requires significant manpower, material resources, and financial investment, and may also damage the surrounding environment. Furthermore, the backfilling work after excavation is equally tedious and time-consuming, further increasing project costs and time. Impact crushing is not only time-consuming and labor-intensive, but also generates noise and vibration that can impact nearby residents and structures, limiting its applicability. Using full-casing extraction is not only expensive, but also restricts the selection of machinery, and the project timeline and effectiveness remain to be confirmed.
[0004] Therefore, there is an urgent need for a new type of equipment and method for removing ground obstacle piles, providing an effective solution to the shortcomings of existing technologies. Utility Model Content
[0005] The main purpose of this utility model is to provide a pile-removing device for removing ground obstacles, which is designed to facilitate the removal of ground obstacle piles and is also low in cost.
[0006] To achieve the above objectives, this utility model provides a pile extraction device for removing ground obstacles, including Larssen sheet piles and pile heads fixed to the bottom of the Larssen sheet piles. A baffle groove is provided on the front side wall of the pile head away from the Larssen sheet pile. A one-way plate that can rotate relative to the direction close to the Larssen sheet pile is installed on the baffle groove. A relief plate hole is provided on the Larssen sheet pile opposite the baffle groove. When the one-way plate rotates to the horizontal position, its free end rests on the lower edge of the relief plate hole.
[0007] Preferably, the pile head includes a left side plate, a right side plate, and a front panel connecting the left side plate and the right side plate, with a baffle groove located on the front panel, and openings provided on both the left side plate and the right side plate.
[0008] Preferably, the pile extraction equipment for removing ground obstacles further includes a water spraying device installed on the Larsen sheet pile and the pile head for spraying high-pressure water to soften the soil.
[0009] Preferably, the water spraying device includes a vertical water supply pipe installed on the Larssen sheet pile and arranged along its height direction, and an inclined water distribution pipe installed on the pile head. The inclined water distribution pipe is connected to the vertical water supply pipe, and both the vertical water supply pipe and the inclined water distribution pipe have water outlet holes at their bottom ends.
[0010] Preferably, both the left and right side plates are provided with oblique water distribution pipes, and both sides of the Larssen sheet pile are provided with vertical water supply pipes, with water outlets distributed at the four corners at the bottom of the pile head.
[0011] Preferably, the outer walls of both the left and right side plates are welded with protruding pipe grooves, which accommodate the water distribution pipes.
[0012] Preferably, the pile-pulling device for removing ground obstacles further includes an anti-tipping hoop welded to the upper part of the Larssen sheet pile.
[0013] Preferably, a blade edge is welded to the bottom of the pile head.
[0014] Preferably, a hinge seat is welded onto the baffle groove, and the one-way plate is mounted on the hinge seat via a rotating shaft.
[0015] Preferably, the pile head is welded to the Larssen sheet pile.
[0016] The pile-removing device for removing ground obstacles proposed in this utility model has the following beneficial effects:
[0017] 1. Compared with traditional large-area excavation methods, this pile extraction equipment can precisely control the pile extraction range, significantly reducing damage to the surrounding environment;
[0018] 2. Piling equipment can be manufactured directionally according to different depths and geological conditions, thus having a wider range of applications;
[0019] 3. This pile extraction equipment is applicable to piles of different shapes, making it more versatile;
[0020] 4. Compared with full casing follow-up pile extraction, this pile extraction equipment is more flexible, can be processed and manufactured on site, and the cost is greatly reduced. Attached Figure Description
[0021] Figure 1 This is a front view of the pile-removing device of this utility model for removing ground obstacles;
[0022] Figure 2 This is a top view of the pile-removing device of this utility model for removing ground obstacles;
[0023] Figure 3 This is a three-dimensional structural diagram of the pile-removing device for removing ground obstacles according to this utility model.
[0024] Figure 4 This is a right view of the pile-removing device of this utility model for removing ground obstacles;
[0025] Figure 5 This is a partial structural diagram of the pile-removing device of this utility model for removing ground obstacles.
[0026] In the diagram: 1. Larssen sheet pile; 2. Anti-reverse hoop; 3. Pile head; 4. Baffle groove; 5. One-way plate; 6. Opening; 7. Vertical water supply pipe; 8. Angled water distribution pipe; 9. Water outlet; 10. Pipe groove; 11. Relief plate hole; 12. Blade edge; 13. Hinge seat.
[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0028] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
[0029] It should be noted that in the description of this utility model, the terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for 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 utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] In this preferred embodiment, refer to Figures 1 to 5 A pile-removing device for removing ground obstacles includes Larssen sheet piles 1 and pile heads 3 fixed to the bottom of Larssen sheet piles 1. A baffle groove 4 is provided on the front side wall of the pile head 3 away from Larssen sheet piles 1. A one-way plate 5 that can rotate relative to the direction close to Larssen sheet piles 1 is installed on the baffle groove 4. A relief plate hole 11 is provided on the Larssen sheet piles 1 facing the baffle groove 4. When the one-way plate 5 rotates to the horizontal position, its free end rests on the lower edge of the relief plate hole 11.
[0031] Specifically, refer to Figure 5In this embodiment, the pile head 3 includes a left side plate, a right side plate, and a front panel connecting the left side plate and the right side plate. A baffle groove 4 is located on the front panel, and openings 6 are provided on both the left side plate and the right side plate. The left side plate, the right side plate, and the front panel are preferably integrally formed to simplify the manufacturing process of the pile head 3. Providing openings 6 on the left side plate and the right side plate helps to reduce the weight of the pile head 3.
[0032] Furthermore, the pile extraction equipment used for removing ground obstacles also includes a water spraying device installed on the Larssen sheet pile 1 and the pile head 3 for spraying high-pressure water to soften the soil.
[0033] Specifically, this embodiment proposes a specific structure for a water spraying device: the water spraying device includes a vertical water supply pipe 7 installed on the Larsen sheet pile 1 and arranged along its height direction, and an inclined water distribution pipe 8 installed on the pile head 3. The inclined water distribution pipe 8 is connected to the vertical water supply pipe 7, and both the vertical water supply pipe 7 and the inclined water distribution pipe 8 have water outlet holes 9 at their bottom ends.
[0034] Furthermore, inclined water distribution pipes 8 are provided on both the left and right sides of the sheet pile 1, and vertical water supply pipes 7 are provided on both sides of the sheet pile 1. Water outlets 9 are distributed at the four corners at the bottom of the pile head 3, so as to spray water evenly on the soil and improve the water spraying effect.
[0035] Furthermore, referring to Figure 3 and Figure 4 Both the left and right side plates have protruding pipe grooves 10 welded to their outer walls, and the water distribution pipe is accommodated within the pipe grooves 10. By setting the pipe grooves 10, the inclined water distribution pipe 8 is protected, preventing it from being displaced by the soil when the pile extraction equipment is inserted into the soil.
[0036] Furthermore, referring to Figure 4 The pile-pulling equipment used for removing obstacles also includes an anti-tipping hoop 2 welded to the upper part of the Larssen sheet pile 1 to prevent the obstacle pile from tipping over.
[0037] Furthermore, referring to Figure 5 The bottom of the pile head 3 is welded with a blade edge 12, which facilitates the insertion of the pile extraction equipment into the soil.
[0038] Specifically, in this embodiment, a hinge seat 13 is welded onto the baffle groove 4, and the one-way plate 5 is mounted on the hinge seat 13 via a rotating shaft. The pile head 3 is welded to the Larssen sheet pile 1.
[0039] When manufacturing the pile extraction equipment for removing obstacles, firstly, the Larssen sheet pile 1 and the pile head 3 are welded into a hoop-shaped structure, ensuring that the one-way plate 5 is hinged to the baffle groove 4 of the bottom pile head 3 via the hinge seat 13. Subsequently, the vertical water supply pipe 7 is connected to the high-pressure water pump, and the inclined water distribution pipe 8 is fixed to the left and right side plates of the bottom pile head 3 via the pipe groove 10, ensuring that the water outlet 9 is located at the four corners of the bottom port of the bottom pile head 3.
[0040] The working process of the pile-removing equipment used to remove ground obstacles is as follows:
[0041] Step 1: By consulting the original site's structural drawings in the archives, parameters such as the size and depth of the structural barrier piles can be obtained. If the archives do not have structural drawings, relevant parameters can be obtained through testing methods, such as using small strain or ultrasonic methods to measure the approximate length range of the barrier piles.
[0042] Step 2: Based on Step 1, determine the approximate depth of the obstacle pile. Use Larssen steel sheet to make a pile extraction device for dealing with the obstacle. The length of the pile extraction device is longer than the obstacle pile. The inner cavity of the ring-shaped structure formed by the pile head 3 and the Larssen steel sheet pile 1 must be larger than the size of the obstacle pile.
[0043] Step 3: Demolish the structure within the area affected by the obstacle pile treatment, exposing pile head 3. Clear the soil around pile head 3, ensuring at least 2m of pile head 3 is exposed. Simultaneously, cut off the exposed reinforcing steel bars so that the hoop can be fitted into pile head 3 for guidance. Ensure proper edge protection during construction.
[0044] Step 4: Connect the external high-pressure water pump to the vertical water supply pipe 7. Use the pile driver to start driving the Larssen sheet piles 1 downwards. During the downward driving process, the one-way plate 5 remains vertical due to soil resistance. When the pile head 3 has driven a certain distance beyond the bottom of the barrier pile, use the vibration of the pile driver to loosen the surrounding soil. At the same time, the water jet continuously disturbs and cuts, loosening the soil at the bottom of the pile. This process can continue for a period of time. Then, the pile driver pulls the Larssen sheet pile 1 in the opposite direction, and the soil at the bottom of the pile continues to loosen. The one-way plate 5 slowly changes from vertical to inclined. Repeat the downward and upward operation to completely destroy the soil below the bottom of the barrier pile, changing it from dense soil to mud. At this time, the one-way plate 5 rotates to a horizontal state under the resistance of the soil and its own weight. Its free end rests on the lower edge of the hole 11 and is restricted from rotation. The pile driver continues to pull the pile, and the one-way plate 5 supports the bottom of the barrier pile, providing it with an upward pulling force. The barrier pile can be slowly lifted. Because the anti-tipping hoop 2 restricts the ground obstacle pile to a limited range, after the ground obstacle pile has been pulled out to a certain extent, a rope can be used to loop the top of the pile that has been partially pulled out on the ground, and a crane can be used to apply an upward force, which is more conducive to the removal of the pile body and at the same time effectively avoids the pile body from breaking.
[0045] In step four, during the downward pile driving process, the water outlet 9 of the pile head 3 sprays water jets to clean the mud, sand and stones at the location of the pile head 3, thereby improving the pile driving efficiency; after the pile head 3 has been driven to a distance beyond the bottom of the ground barrier pile, the water outlet 9 is used to spray water jets to help loosen the soil near the pile head 3.
[0046] The pile-removing device for removing ground obstacles proposed in this embodiment has the following beneficial effects:
[0047] 1. Compared with traditional large-area excavation methods, this pile extraction equipment can precisely control the pile extraction range, significantly reducing damage to the surrounding environment;
[0048] 2. Piling equipment can be manufactured directionally according to different depths and geological conditions, thus having a wider range of applications;
[0049] 3. This pile extraction equipment is applicable to piles of different shapes, making it more versatile;
[0050] 4. Compared with full casing follow-up pile extraction, this pile extraction equipment is more flexible, can be processed and manufactured on site, and the cost is greatly reduced.
[0051] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A pile-removing device for removing ground obstacles, characterized in that, It includes Larssen sheet piles and pile heads fixed to the bottom of the Larssen sheet piles. A baffle groove is opened on the front side wall of the pile head away from the Larssen sheet pile. A one-way plate that can rotate relative to the direction close to the Larssen sheet pile is installed on the baffle groove. A relief plate hole is opened at the position of the Larssen sheet pile facing the baffle groove. When the one-way plate rotates to the horizontal position, its free end rests on the lower edge of the relief plate hole.
2. The pile-removing device for removing ground obstacles as described in claim 1, characterized in that, The pile head includes a left side plate, a right side plate, and a front panel connecting the left side plate and the right side plate. A baffle groove is located on the front panel, and openings are provided on both the left side plate and the right side plate.
3. The pile-removing device for removing ground obstacles as described in claim 2, characterized in that, It also includes a water spraying device installed on Larsen sheet piles and pile heads for spraying high-pressure water to soften the soil.
4. The pile-removing device for removing ground obstacles as described in claim 3, characterized in that, The water spraying device includes a vertical water supply pipe installed on the Larsen sheet piles and arranged along its height direction, and an inclined water distribution pipe installed on the pile head. The inclined water distribution pipe is connected to the vertical water supply pipe, and both the vertical water supply pipe and the inclined water distribution pipe have water outlet holes at their bottom ends.
5. The pile-removing device for removing ground obstacles as described in claim 4, characterized in that, Both the left and right side plates are equipped with oblique water distribution pipes, and both sides of the Larssen sheet pile are equipped with vertical water supply pipes. The water outlets are distributed at the four corners at the bottom of the pile head.
6. The pile-removing device for removing ground obstacles as described in claim 4, characterized in that, Both the left and right side plates have protruding pipe grooves welded to their outer walls, and the water distribution pipes are accommodated within these grooves.
7. The pile-removing device for removing ground obstacles as described in claim 1, characterized in that, It also includes anti-tipping hoops welded to the upper part of Larssen sheet piles.
8. The pile-removing device for removing ground obstacles as described in claim 1, characterized in that, The bottom of the pile head is welded with a blade edge.
9. The pile-removing device for removing ground obstacles as described in claim 1, characterized in that, A hinge seat is welded onto the baffle groove, and the one-way plate is mounted on the hinge seat via a rotating shaft.
10. The pile-removing device for removing ground obstacles as described in any one of claims 1 to 9, characterized in that, The pile head is welded to the Larssen sheet pile.