Pile pulling device

Abstract

The utility model provides a pulling device for a pile, which comprises a base, a first hoop component, a second hoop component, a plurality of jacking components and a support arranged on the periphery of the pile, each jacking component is arranged on the base, the second hoop component can be erected on the support, and the first hoop component and the second hoop component are arranged on the support. The multiple jacking components can jack the first hoop component fastened outside the pile to lift the pile, after the pile is lifted, the pile is fixed through the second hoop component, then the jacking components and the first hoop component are restored to the initial state, if the pile needs to be pulled again, the first hoop component is fastened outside the pile, and the action is repeated. And the piles are pulled out repeatedly till all the piles are pulled out. The utility model has the beneficial effects that the pile can be pulled for multiple times in sections, can be fixed to prevent falling back after being lifted, is suitable for construction when the space is limited, can reduce the cost of a construction machine and the occupied space, and improves the construction efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of pile foundation construction, and particularly relates to a device for pulling out piles. Background Art

[0002] In the existing technology, during the demolition of old buildings and the construction of new buildings in engineering, when constructing pile foundations, it may be encountered that old piles affect the construction of new piles. Generally, a crushing cone is used for hammering and crushing. This method has a large amount of cleaning work for broken piles and slow progress, seriously affecting the construction progress. Some pile pulling devices need to be connected to the top of the pile. It is inconvenient to operate when there is an obstruction above or the construction space is limited. Especially when the pile is long and cannot be pulled out at one time in the existing space, the pile pulling device needs to be repeatedly installed and disassembled for multiple segmented pile pulling. When disassembling the pile pulling device, it also needs to be matched with other devices that can fix the pile. The construction occupies a large space, the machine platform operation cost is high, and the construction progress is slow. There are technical problems such as only removing piles by the method of crushing and hammering, with a large amount of cleaning work, inconvenient construction when the pile top space is limited, slow construction progress, large construction occupied space, and high machine platform operation cost when multiple segmented pile pulling is required. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides a device for pulling out piles, which is especially suitable for the situation where the pile top space is limited or multiple segmented pile pulling is required. It can reduce the occupied space and the machine platform cost, and at the same time, pull out the pile simply and efficiently.

[0004] The technical solution adopted by the utility model is: a device for pulling out piles, including a base, and further including a first hoop component, a second hoop component, a plurality of jacking components, and a support seat arranged around the pile. Each jacking component is arranged on the base. The plurality of jacking components can push the first hoop component fastened outside the pile to lift the pile. The second hoop component can be placed on the support seat and fastened outside the pile to prevent the lifted pile from falling back. When the second hoop component is also fastened outside the pile and the pile is lifted, the pile can drive the second hoop component to be lifted synchronously.

[0005] Furthermore, the first hoop component includes a plurality of first hoop units that can be connected to each other to clamp outside the pile. Adjacent two first hoop units are connected by fastening components. Each fastening component includes a fastening bolt and a fastening nut. Each first hoop unit includes a first top plate, a first bottom plate, two first connecting plates, and a first arc-shaped side plate that can fit the surface of the pile. The two sides of the first arc-shaped side plate in the horizontal direction are respectively connected to the first connecting plates. Each first connecting plate is provided with at least one connection hole for inserting the fastening bolt. The fastening bolt can be inserted into the connection holes opened on the adjacent two first connecting plates in sequence and threadedly connected with the fastening nut. The two sides of the first arc-shaped side plate in the vertical direction are respectively connected to the first top plate and the first bottom plate. Each jacking component lifts the pile by pushing the first bottom plate opposite to it.

[0006] Further, each first hoop unit further includes at least one first stiffening plate, and each first stiffening plate is disposed between the first top plate and the first bottom plate to strengthen.

[0007] Further, the second hoop member includes a plurality of second hoop units that can be connected to each other to clamp outside the pile. Two adjacent second hoop units are connected by a fixing assembly. Each fixing assembly includes a fixing bolt and a fixing nut. Each second hoop unit includes a second top plate, a second bottom plate, two second connecting plates, and a second arc-shaped side plate that can be attached to the surface of the pile. The two sides of the second arc-shaped side plate in the horizontal direction are respectively connected to the second connecting plates. Each second connecting plate is provided with at least one mounting hole for inserting the fixing bolt. The fixing bolt can be sequentially inserted into the mounting holes formed in two adjacent second connecting plates and threadedly connected to the fixing nut. The two sides of the second arc-shaped side plate in the vertical direction are respectively connected to the second top plate and the second bottom plate. At least one second bottom plate can be placed on the support.

[0008] Further, each second hoop unit further includes at least one second stiffening plate, and each second stiffening plate is disposed between the second top plate and the second bottom plate to strengthen.

[0009] Further, the second hoop member is disposed between the base and the first hoop member, and the support is disposed on the top of the base to support the second hoop member.

[0010] The advantages and positive effects of the present utility model are as follows: Due to the adoption of the above technical solution, staged multiple pile pulling and fixation during the pile pulling process can be carried out, which is particularly suitable for pile pulling construction when the space above the pile is limited; it has the advantages of simple structure, convenient operation, reducible construction machine cost and occupied space, and improved construction efficiency. Description of the Drawings

[0011] Figure 1 is a schematic installation scenario diagram of an embodiment of the present utility model before pile pulling

[0012] Figure 2 is a schematic usage scenario diagram of an embodiment of the present utility model when the jacking member pushes the first hoop member during pile pulling

[0013] Figure 3 is a schematic usage scenario diagram of an embodiment of the present utility model when the pile is fixed by the second hoop member after being lifted

[0014] Figure 4 is a schematic usage scenario diagram of an embodiment of the present utility model after the jacking member and the first hoop member are reset after the pile is lifted

[0015] In the figure:

[0016] 1. Base 2. Support 3. First hoop component

[0017] 4. Second hoop component 5. Jacking component 6. Pile

[0018] 7. Fastening assembly 31. First top plate 32. First bottom plate

[0019] 33. First connecting plate 34. First arc-shaped side plate 35. First stiffening plate

[0020] 41. Second top plate 42. Second bottom plate 44. Second arc-shaped side plate

[0021] 45. Second stiffening plate Detailed implementation mode

[0022] The following will describe the embodiments of the present utility model with reference to the accompanying drawings. The described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments.

[0023] The following will describe in detail the embodiments of the present utility model. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals represent the same or similar units or units with the same or similar functions from beginning to end.

[0024] The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model, and cannot be understood as a limitation to the present utility model. In the description of the present utility model, it should be understood that terms such as "installation", "connection", "fixation", etc. should be understood in a broad sense, which can be direct connection, installation or fixation, or indirect connection, installation or fixation. The present utility model does not limit this.

[0025] In the description of the present utility model, it should be understood that terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the structure or unit referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0026] Such as Figures 1 to 4As shown in the figure, it is a schematic diagram of an embodiment of a device for pulling out a pile of the present utility model, which includes a base 1, and also includes a first hoop member 3, a second hoop member 4, a plurality of jacking members 5 and a support 2 disposed around the pile 6. Each jacking member 5 is disposed on the base 1, and the plurality of jacking members 5 can push the first hoop member 3 fastened outside the pile 6 to lift the pile 6. The second hoop member 4 can be placed on the support 2 and fastened outside the pile 6 to prevent the lifted pile 6 from falling back. When the second hoop member 4 is also fastened outside the pile 6 and the pile 6 is lifted, the pile 6 can drive the second hoop member 4 to be lifted synchronously.

[0027] In this embodiment, the jacking member 5 includes a jack, and the plurality of jacking members 5 provide power to push the first hoop member 3; the base 1 can be made of metal or the base 1 can be made of concrete, as long as it meets the construction load-bearing requirements. In this embodiment, the base 1 is an annular shape coaxial with the pile 6. The base 1 can provide a better load-bearing effect for the plurality of jacking members 5, so that the reaction force during the pushing of the plurality of jacking members 5 can be evenly distributed to the entire soil layer around the pile 6, avoiding the settlement of the local soil layer due to stress, improving the stability during pile pulling, and enabling the plurality of jacking members 5 to provide a stable pushing effect for the first hoop member 3.

[0028] The usage method of this embodiment includes:

[0029] S1. Excavate the pile 6 until the pile head is exposed, place the base 1 on the soil layer around the pile 6 and install a plurality of jacking members 5. In this embodiment, the jacking member 5 is a jack;

[0030] S2. Fasten the first hoop member 3 outside the pile 6 and place it on the plurality of jacking members 5, adjust the jacking members 5 to push the first hoop member 3, and lift the pile 6 through the first hoop member 3;

[0031] When the second hoop member 4 is also fastened to the pile 6 and the pile 6 is lifted, the pile 6 can drive the second hoop member 4 to be lifted synchronously;

[0032] When the pile 6 is lifted to the set height, first place the second hoop member 4 on the support 2 and fasten it to the pile 6 to prevent the lifted pile 6 from falling back, and then loosen the first hoop member 3 and adjust the jacking members 5 to the initial position;

[0033] S3. The above S2 steps can be repeated according to requirements until the pile 6 is completely pulled out of the ground.

[0034] The utility model is clamped to the outer periphery of the pile 6 through the first hoop member 3. Compared with the installation method that needs to be connected to the top of the pile 6, it can be used when the space above the pile is limited. When the jacking member 5 and the first hoop member 3 fall back to pull the pile again, the second hoop member 4 can fix the lifted pile 6 to prevent the pile 6 from falling back. By alternately tightening the first hoop member 3 and the second hoop member 4, the pile 6 can be simply and quickly lifted in multiple segments. The utility model can provide power through the jacking member 5, such as a jack, and use the jack to repeatedly act to gradually lift the pile 6 out of the ground. During the lifting process of the pile, the part of the pile pulled out of the ground can be gradually broken by a pile breaker, which can avoid the pile from tipping over due to being pulled out of the ground too high, and can also reduce the load on the jack. It is more suitable for pulling piles when the space above the pile is limited, can be used for pulling plain concrete piles, and can also be used for pulling reinforced concrete piles. It has a wide range of applicability and is convenient for popularization and use.

[0035] The first hoop member 3 and the second hoop member 4 can be constructed with the same structure or different structures.

[0036] In this embodiment, the first hoop member 3 includes a plurality of first hoop units that can be connected to each other to clamp the outside of the pile 6. Adjacent two first hoop units are connected by a fastening assembly 7. Each fastening assembly 7 includes a fastening bolt and a fastening nut. Each first hoop unit includes a first top plate 31, a first bottom plate 32, two first connecting plates 33, and a first arc-shaped side plate 34 that can fit the surface of the pile 6. The two sides of the first arc-shaped side plate 34 in the horizontal direction are respectively connected to the first connecting plates 33. Each first connecting plate 33 is provided with at least one connection hole for inserting the fastening bolt. The fastening bolt can be inserted into the connection holes opened on adjacent two first connecting plates 33 in sequence and threadedly connected with the fastening nut. The number of fastening bolts used can be increased according to the construction requirements to strengthen. The two sides of the first arc-shaped side plate 34 in the vertical direction are respectively connected to the first top plate 31 and the first bottom plate 32 from top to bottom. Each jacking member 5 lifts the pile 6 by pushing the first bottom plate 32 opposite to it.

[0037] The fastening effect between the first hoop member 3 and the pile 6 can be adjusted through the fastening assembly 7, so that there is no relative slip between the first hoop member 3 and the pile 6. When the jacking member 5 acts on the first hoop member 3 by pushing, the pile 6 can be lifted synchronously with the first hoop member 3 to achieve the pile pulling effect. The first arc-shaped side plate 34 can fit the surface of the pile 6, thereby increasing the contact area and mutual friction force, achieving a better fastening effect and improving the stability of pile pulling.

[0038] In this embodiment, each first hoop unit further includes at least one first stiffening plate 35, and each first stiffening plate 35 is arranged between the first top plate 31 and the first bottom plate 32 to strengthen.

[0039] The connection modes of both ends of the first arc-shaped side plate 34 with the first connecting plate 33 can be realized by welding. In this embodiment, the first arc-shaped side plate 34 and the first connecting plates 33 arranged at both ends thereof are formed by bending the same metal plate. The design without welding points can improve the connection strength and avoid affecting the overall strength of the first hoop component 3 due to low strength of connection modes such as welding. The included angle between the first arc-shaped side plate 34 and each first connecting plate 33 is an obtuse angle. Each first hoop unit is formed by enclosing a semi-closed structure with a groove by the first top plate 31, two first connecting plates 33, the first arc-shaped side plate 34 and the first bottom plate 32, and the opening of the groove faces away from the pile 6. The semi-closed structure can facilitate the insertion of fastening bolts, and the convenient operation can improve the construction efficiency. The first bottom plate 32 can provide a force application point for the jacking component 5 during jacking. The groove area can become a weight reduction space, enabling the first hoop component 3 to meet the requirements of being jacked and stressed to lift the pile 6 while also reducing the weight of the device and facilitating handling. Through the interaction of connecting the first top plate 31, the first stiffening plate 35 and the first bottom plate 32, the potential hazard of the first bottom plate 32 being deformed due to the force of the jacking component 5 can be reduced. In this embodiment, at least one first stiffening plate 35 is arranged at the position where the force is applied by jacking, that is, at least one first stiffening plate 35 and the jacking component 5 are respectively arranged on both sides of the first bottom plate 35, further reducing the potential hazard of the first bottom plate 35 being deformed due to the force when the jacking component 5 jacks the first bottom plate 35 and extending the service life of the device. In this embodiment, the number of the first hoop units is two, which can be clamped on the opposite sides of the pile 6. Each first hoop unit is constructed with the same structure, and the unified structure can facilitate maintenance. The first top plate 31 and the first bottom plate 32 are made of metal plates with the same shape, which is an intermediate ring shape and both ends are respectively set as triangular structures for jacking, facilitating the splicing of the two first hoop units and enabling the spliced first hoop component 3 to form an annular clamping structure with equilateral triangles on both sides. In this embodiment, the number of the jacking components 5 is two and they are respectively arranged at the equilateral triangle structures on both sides of the first hoop component 3. The two jacking components 5 can be controlled to perform equal amounts of lifting synchronously, applying upward forces on both sides of the pile 6 to lift the pile 6. The synchronous equal amount of lifting by multiple jacks is a prior art and will not be described separately in the present utility model. An elastic anti-slip layer, such as a rubber layer, can be arranged on the side of the first arc-shaped side plate 34 close to the pile 6 to increase the friction with the pile 6, ensuring that the device and the pile 6 do not slip during the pile pulling process, making the pile pulling process safer and more stable and improving the pile pulling effect. The first top plate 31, the first bottom plate 32, the first arc-shaped side plate 34 and the elastic anti-slip layer can select appropriate structures according to the pile diameter and be processed and manufactured in advance. In another specific usage scenario, the shape specifications of the first top plate 31, the first bottom plate 32 and the first arc-shaped side plate 34 can also be kept unchanged, and only by replacing elastic anti-slip layers with different shapes and specifications can the device be adapted to pull piles 6 with different diameters.

[0040] In this embodiment, the second hoop member 4 and the first hoop member 3 are constructed with the same structure and have the same structural advantages. For example, the second hoop member 4 includes a plurality of second hoop units that can be interconnected to clamp around the outside of the pile 6. Adjacent two second hoop units are connected by fixing components. Each fixing component includes a fixing bolt and a fixing nut. Each second hoop unit includes a second top plate 41, a second bottom plate 42, two second connecting plates, and a second arc-shaped side plate 44 that can fit against the surface of the pile 6. The two sides of the second arc-shaped side plate 44 in the horizontal direction are respectively connected to the second connecting plates. Each second connecting plate is provided with at least one mounting hole for inserting the fixing bolt. The fixing bolt can be sequentially inserted into the mounting holes formed in two adjacent second connecting plates and threadedly connected with the fixing nut. The two sides of the second arc-shaped side plate 44 in the vertical direction are respectively connected to the second top plate 41 and the second bottom plate 42 from top to bottom. At least one second bottom plate 42 can be placed on the support 2.

[0041] In this embodiment, each second hoop unit further includes at least one second stiffening plate 45, and each second stiffening plate 45 is disposed between the second top plate 41 and the second bottom plate 42 for strengthening.

[0042] The number of second hoop units included in the second hoop member 4 is also two, and each second hoop unit has the same structure and shape as the first hoop unit and has the same structural advantages.

[0043] In this embodiment, the second hoop member 4 is disposed between the base 1 and the first hoop member 3, and the support 2 is disposed on the top of the base 1 to support the second hoop member 4. The number of supports 2 is two, which are used to support the two equilateral triangle structures formed by splicing two second hoop units; the straight line formed by connecting the two supports 2 is perpendicular to the straight line formed by connecting the two jacking components 5. This embodiment can make the second hoop member 4 disposed between the base 1 and the first hoop member 3, meeting the use requirements and better saving the construction occupied space.

[0044] The specific use process of this embodiment is as follows:

[0045] S1. Excavate the pile 6 until the pile head is exposed, so that the exposed part length meets the installation of the pile extraction device. Conduct foundation treatment and place the base 1 on the soil layer around the pile 6 to meet the bearing requirements during pile 6 extraction. Install a plurality of jacking components 5 on the base 1, which can be jacks, and connect a plurality of supports 2 to the top of the base 1;

[0046] S2. Connect and fasten a plurality of first hoop units to the outside of the pile 6 through fastening components, and place the first hoop member 3 on a plurality of jacks. The plurality of jacks are pressurized simultaneously to push the triangular structures on both sides of the first hoop member 3, and the first hoop member 3 is lifted to drive the pile 6 out;

[0047] If the second hoop member 4 is also fastened to the pile 6, when the pile 6 is lifted, the pile 6 can drive the second hoop member 4 to be lifted synchronously;

[0048] When the pile 6 is lifted to the set height, first place the second hoop member 4 on the support 2, and then tighten the fixing bolts and fixing nuts to fasten the second hoop member 4 and the pile 6 to prevent the first hoop member 3 from loosening and the lifted pile 6 from falling back. Then loosen the fastening bolts and fastening nuts to loosen the first hoop member 3, adjust the multiple jacks to reduce the pressure and return to the initial position, and the first hoop member 3 is placed on the multiple jacks;

[0049] According to requirements, a pile breaking device, such as a hydraulic pile breaker, can be used to break the pulled part of the pile body to reduce the length of the pulled part of the pile 6 and reduce the load during the pushing of the jacking member 5;

[0050] S3. If it is necessary to continue pulling the pile according to requirements, the above S2 steps can be repeated until the pile 6 is pulled out of the ground.

[0051] The utility model can perform segmented multiple pile pulling and fixation during the pile pulling process only through the pile pulling device for the pile, and is particularly suitable for pile pulling construction when the space above the pile 6 is limited. It has the advantages of simple structure, convenient operation, reducible construction machine cost and floor space, and improved construction efficiency.

[0052] The above has described the embodiments of the present utility model in detail, but the content described is only the preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of the application of the present utility model should still fall within the scope covered by the patent of the present utility model.

Claims

1. A device for pulling out piles, comprising a base, characterized in that: It further includes a first hoop component, a second hoop component, a plurality of jacking components, and a support disposed around the pile. Each of the jacking components is disposed on the base. The plurality of jacking components can push against the first hoop component fastened outside the pile to lift the pile. The second hoop component can be placed on the support and fastened outside the pile to prevent the lifted pile from falling back. When the second hoop component is also fastened outside the pile and the pile is lifted, the pile can drive the second hoop component to be lifted synchronously.

2. The pile extraction device according to claim 1, characterized in that: The first hoop component includes a plurality of first hoop units that can be connected to each other to clamp outside the pile. Adjacent two of the first hoop units are connected by a fastening assembly. Each fastening assembly includes a fastening bolt and a fastening nut. Each first hoop unit includes a first top plate, a first bottom plate, two first connecting plates, and a first arc-shaped side plate that can fit against the surface of the pile. The two sides of the first arc-shaped side plate in the horizontal direction are respectively connected to the first connecting plates. Each first connecting plate is provided with at least one connection hole for inserting the fastening bolt. The fastening bolt can be sequentially inserted into the connection holes formed in adjacent two of the first connecting plates and threadedly connected with the fastening nut. The two sides of the first arc-shaped side plate in the vertical direction are respectively connected to the first top plate and the first bottom plate. Each jacking component lifts the pile by pushing against the first bottom plate opposite thereto.

3. The pile extraction device according to claim 2, characterized in that: Each of the first hoop units further includes at least one first stiffening plate, and each first stiffening plate is disposed between the first top plate and the first bottom plate for strengthening.

4. The pile extraction device according to any one of claims 1 to 3, characterized in that: The second hoop component includes a plurality of second hoop units that can be connected to each other to clamp outside the pile. Adjacent two of the second hoop units are connected by a fixing assembly. Each fixing assembly includes a fixing bolt and a fixing nut. Each second hoop unit includes a second top plate, a second bottom plate, two second connecting plates, and a second arc-shaped side plate that can fit against the surface of the pile. The two sides of the second arc-shaped side plate in the horizontal direction are respectively connected to the second connecting plates. Each second connecting plate is provided with at least one mounting hole for inserting the fixing bolt. The fixing bolt can be sequentially inserted into the mounting holes formed in adjacent two of the second connecting plates and threadedly connected with the fixing nut. The two sides of the second arc-shaped side plate in the vertical direction are respectively connected to the second top plate and the second bottom plate. At least one of the second bottom plates can be placed on the support.

5. The device for pulling out piles according to claim 4, characterized in that: Each of the second hoop units further includes at least one second stiffening plate, and each second stiffening plate is disposed between the second top plate and the second bottom plate for strengthening.

6. The pile extraction device according to claim 1, characterized in that: The second hoop component is disposed between the base and the first hoop component, and the support is disposed on the top of the base to support the second hoop component.

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