Old engineering pile pulling-out device

Abstract

The utility model relates to an old engineering pile pulling device which is applied to the field of building engineering construction and comprises a fixed base and a lifting pile pulling seat, through holes allowing engineering piles to penetrate through are formed in the lifting pile pulling seat and the fixed base, and at least two pile pulling oil cylinders are arranged between the lifting pile pulling seat and the fixed base; a pile clamping plate synchronous ring is arranged in the lifting pile pulling seat, and a pile clamping execution unit is arranged on the lifting pile pulling seat and can drive the pile clamping plate synchronous ring to move in the height direction; a plurality of pile clamping plates are arranged in the lifting pile pulling base and distributed along the inner circle of the pile clamping plate synchronous ring, linkage mechanisms are arranged between the pile clamping plates and the pile clamping plate synchronous ring, the pile clamping execution unit controls the pile clamping plate synchronous ring to move in the height direction, and the pile clamping plates are synchronously controlled by the linkage mechanisms to clamp, fix and loosen an engineering pile. According to the pile clamping device, more pile clamping plates are arranged to clamp and fix the engineering pile, so that the fixing effect on the engineering pile is improved, each pile clamping plate does not need to be provided with a pile clamping oil cylinder, and therefore the equipment investment cost is low.

Description

Technical Field

[0001] The present application relates to the field of building engineering construction, and in particular to a device for removing old engineering piles. Background Art

[0002] When carrying out the engineering pile construction of a new building, if old foundation piles are found in some pile positions, in order to ensure the smooth construction of the engineering piles, the old foundation piles in some pile positions must be removed.

[0003] At present, the more commonly used method is vibration pile pulling, which uses the high-frequency vibration of the pile pulling machine to vibrate the pile body, and transmit the vibration generated by the machine to the pile body, so that the soil structure around the pile becomes loose and the strength is reduced due to the vibration. After the friction resistance between the pile body and the soil is reduced, the pile is pulled out while vibrating. However, the construction process of vibration pile pulling is relatively rough, which may cause the old pile to break, which is not conducive to extraction. In addition, during the extraction of the old pile, the surrounding soil is greatly disturbed, affecting the safety of surrounding buildings.

[0004] In order to solve the problem of removing old piles by vibrating pile pulling, hydraulic pile pulling can be used. The construction process of hydraulic pile pulling is relatively smooth and safe, and it is not easy to cause the old piles to break. For example, Chinese patent application number CN202022858742.1 discloses a pile pulling device for water conservancy projects. During construction, the pile pulling device is moved to the position of the engineering pile and sleeved on the outside of the engineering pile. The pile pulling device is supported and fixed by a support plate, and then each first hydraulic cylinder is started to drive the fixed block to move through the first hydraulic cylinder so that the fixed block is in close contact with the engineering pile, and the pile pulling device is fixed to the engineering pile, and then each second hydraulic cylinder is started to apply an upward supporting force to the fixed plate. Repeated operations can gradually pull out the engineering pile.

[0005] The above-mentioned pile pulling equipment using hydraulic pile pulling only relies on a few fixing blocks to clamp and fix the engineering piles, which may result in poor fixing effect on the engineering piles, and each fixing block must be equipped with a hydraulic cylinder for use, resulting in high equipment investment costs. Utility Model Content

[0006] In order to improve the defects existing in the above-mentioned prior art, the present application provides a device for removing old engineering piles.

[0007] The present application provides a device for removing old engineering piles, which adopts the following technical solution:

[0008] An old engineering pile extraction device includes a fixed base and a lifting pile extraction base. The lifting pile extraction base is arranged above the fixed base. Through holes for the engineering pile to pass through are provided on both the lifting pile extraction base and the fixed base. At least two pile extraction oil cylinders are arranged between the lifting pile extraction base and the fixed base. The cylinder body of the pile extraction oil cylinder is fixed on the lifting pile extraction base, and the piston rod of the pile extraction oil cylinder is fixed on the fixed base. A clamping pile plate synchronous ring is arranged in the through hole of the lifting pile extraction base, and a clamping pile execution unit is further arranged on the lifting pile extraction base. The clamping pile execution unit can drive the clamping pile plate synchronous ring to move in the height direction. A plurality of clamping pile plates are arranged in the lifting pile extraction base. The plurality of clamping pile plates are distributed along the inner circle of the clamping pile plate synchronous ring, and a linkage mechanism is arranged between each clamping pile plate and the clamping pile plate synchronous ring. Under the drive of the clamping pile execution unit, the clamping pile plate synchronous ring is controlled to move along the height direction, and then the plurality of clamping pile plates are synchronously controlled to clamp and fix and release the engineering pile through each linkage mechanism.

[0009] By adopting the above technical solution, the old engineering pile extraction device is placed at the old pile position during construction, and the engineering pile passes through the fixed base and the lifting pile extraction base. In the initial state, the pile extraction oil cylinder controls the lifting pile extraction base to be in a lower posture, and the clamping pile execution unit synchronously controls a plurality of clamping pile plates to be in an open state through the clamping pile plate synchronous ring and each linkage mechanism. When extracting the pile, the clamping pile execution unit synchronously controls a plurality of clamping pile plates to be in a closed state through the clamping pile plate synchronous ring and each linkage mechanism, that is, synchronously controls a plurality of clamping pile plates to clamp and fix the engineering pile. Then the pile extraction oil cylinder controls the lifting pile extraction base to move upward, that is, controls the lifting pile extraction base to be in a higher posture, so as to achieve the purpose of pile extraction. The above steps are repeated several times to complete the pile extraction work. The old engineering pile extraction device of the present application can clamp and fix the engineering pile by setting more clamping pile plates but only synchronously controlled by one clamping pile plate synchronous ring, which can improve the fixing effect on the engineering pile. At the same time, it is not necessary to configure a clamping pile execution unit for each clamping pile plate, so that the cost input of the clamping pile execution unit, that is, the equipment, can be reduced.

[0010] Optionally, at least two U-shaped guide rails are arranged in the through hole of the lifting pile extraction base. The U-shaped guide rails are distributed along the inner circle of the lifting pile extraction base. The U-shaped guide rails are fixedly connected to the lifting pile extraction base and a track extending in the height direction is formed between the U-shaped guide rails and the lifting pile extraction base. The clamping pile plate synchronous ring passes through each track and the clamping pile plate synchronous ring can move along the height direction in each track.

[0011] By adopting the above technical solution, under the action of the U-shaped guide rails, the clamping pile plate synchronous ring can move more stably along the height direction in the lifting pile extraction base.

[0012] Optionally, the pile clamping execution unit includes at least two pile clamping cylinders, each of which is distributed along the circumference of the lifting pile pulling seat, the cylinder body of the pile clamping cylinder is hingedly fixed on the lifting pile pulling seat, and the piston rod of the pile clamping cylinder is hingedly fixed on the pile clamping plate synchronization ring.

[0013] By adopting the above technical solution, the pile clamping cylinder is used to control the synchronous ring of the pile clamping plate to move in the height direction, and then the multiple pile clamping plates are synchronously controlled through various linkage mechanisms, so as to fix and pull out the engineering piles.

[0014] Optionally, the linkage mechanism includes a control force arm and a telescopic force arm, the control force arm and the telescopic force arm are fixedly connected and an obtuse angle is formed between the control force arm and the telescopic force arm, and an articulated seat is provided at each linkage mechanism on the lifting and pile pulling seat, the connecting part between the control force arm and the telescopic force arm is hingedly fixed on the articulated seat, one end of the control force arm away from the telescopic force arm is fixedly connected to the pile clamping plate and an obtuse angle is formed between the control force arm and the pile clamping plate, and one end of the telescopic force arm away from the control force arm is hingedly fixed to the pile clamping plate synchronization ring.

[0015] By adopting the above technical solution, under the action of the pile clamping cylinder, the synchronous ring of the pile clamping plate is controlled to move along the height direction, thereby driving the telescopic force arm and the control force arm to rotate around the hinge point between the two. The control force arm drives the pile clamping plate to approach or move away from the engineering pile, thereby achieving the purpose of fixing the engineering pile and loosening the engineering pile.

[0016] Optionally, the telescopic force arm includes force arm one and force arm two, wherein force arm one is fixedly connected to the control force arm, force arm two is hingedly fixed to the pile clamp plate synchronization ring, and one set of force arms is arranged on the outside of force arm two and telescopic adjustment can be performed between force arm one and force arm two.

[0017] By adopting the above technical solution, relying on the telescopic and adjustable performance of the telescopic force arm, the synchronous ring of the pile clamping plate can control each linkage mechanism and thus synchronously control the operation of each pile clamping plate.

[0018] Optionally, a limiting protrusion is provided on the second force arm, and a limiting waist hole is provided through the first force arm. The limiting protrusion is provided in the limiting waist hole and can move in the limiting waist hole along the direction of telescopic adjustment of the telescopic force arm.

[0019] By adopting the above technical solution, the limiting protrusion and the limiting waist hole play a role in limiting the first and second lever arms, so that the telescopic lever arm is more stable and the structure is more reliable during operation.

[0020] Optionally, a rubber layer is provided on the surface of the pile clamping plate that clamps the engineering pile.

[0021] By adopting the above technical solution, setting the rubber layer can increase the friction and the clamping tightness between the pile clamping plate and the engineering pile, and improve the fixing effect on the engineering pile.

[0022] In summary, the present application includes the following beneficial technical effects:

[0023] 1. For the old engineering pile extraction device of the present application, more pile clamping plates can be set to clamp and fix the engineering pile, but only one pile clamping plate synchronizing ring is needed for synchronous control. By setting more pile clamping plates, the fixing effect on the engineering pile can be improved. At the same time, it is not necessary to configure a pile clamping execution unit for each pile clamping plate, so that the cost input of the pile clamping execution unit, that is, the equipment, can be significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the front view of the structure of the old engineering pile extraction device in the embodiment of the present application.

[0025] Figure 2 It is the top view of the structure of the old engineering pile extraction device in the embodiment of the present application.

[0026] Figure 3 It is the three-dimensional structure diagram of the old engineering pile extraction device in the embodiment of the present application.

[0027] Figure 4 It is the schematic structural diagram of the control force arm and the telescopic force arm in the embodiment of the present application.

[0028] Reference numerals: 1, fixed base; 2, lifting pile extraction seat; 3, pile extraction oil cylinder; 4, pile clamping plate synchronizing ring; 5, pile clamping plate; 6, C-shaped guide rail; 7, pile clamping oil cylinder; 8, control force arm; 9, telescopic force arm; 91, force arm one; 911, limiting waist hole; 92, force arm two; 921, limiting convex block; 10, hinge seat; 11, rubber layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will further describe the present application in detail Figure 1-4 with reference to the attached drawings.

[0030] The embodiment of the present application discloses an old engineering pile extraction device. Refer to Figure 1 and Figure 2, the old engineering pile extraction device includes a fixed base 1 and a lifting pile extraction base 2. The fixed base 1 is set in the form of a rectangular frame structure, and the lifting pile extraction base 2 is set in the form of a circular frame structure. The lifting pile extraction base 2 is arranged above the fixed base 1. At least two pile extraction cylinders 3 are arranged between the lifting pile extraction base 2 and the fixed base 1. In this application, two pile extraction cylinders 3 are taken as an example. The two pile extraction cylinders 3 are both arranged along the height direction and are symmetrically distributed with respect to the center of the lifting pile extraction base 2. The cylinder body of the pile extraction cylinder 3 is fixedly connected to the lifting pile extraction base 2, and the piston rod of the pile extraction cylinder 3 is fixedly connected to the fixed base 1. It should be noted here that through holes for the engineering pile to pass through are provided in the central parts of both the fixed base 1 and the lifting pile extraction base 2. Therefore, during actual pile extraction construction, the construction personnel can place the old engineering pile extraction device of this application at the old pile position, that is, place the fixed base 1 on the pile position ground (it is necessary to ensure that the pile position ground is flat), and the engineering pile passes through the through holes of the fixed base 1 and the lifting pile extraction base 2. During pile extraction operation, the fixed base 1 does not move, and the lifting pile extraction base 2 moves in the height direction under the drive of the two pile extraction cylinders 3.

[0031] Refer to Figure 3 , a pile clamping plate synchronous ring 4 is arranged in the through hole of the lifting pile extraction base 2. The pile clamping plate synchronous ring 4 is arranged along the inner circle of the lifting pile extraction base 2 and can move in the height direction within the lifting pile extraction base 2. Specifically, at least two C-shaped guide rails 6 are arranged in the lifting pile extraction base 2. In this application, four C-shaped guide rails 6 are taken as an example. The four C-shaped guide rails 6 are evenly distributed along the inner circle of the lifting pile extraction base 2. The C-shaped guide rails 6 are fixedly connected to the lifting pile extraction base 2 and form tracks extending in the height direction between the C-shaped guide rails 6 and the lifting pile extraction base 2. The pile clamping plate synchronous ring 4 passes through the four C-shaped guide rails 6 and can move in the four tracks extending in the height direction, that is, move in the height direction. A pile clamping execution unit for driving the pile clamping plate synchronous ring 4 to move in the height direction is arranged on the lifting pile extraction base 2. The pile clamping execution unit includes at least two pile clamping cylinders 7. In this application, two pile clamping cylinders 7 are taken as an example. The two pile clamping cylinders 7 are symmetrically distributed with respect to the center of the lifting pile extraction base 2. It should be noted here that the two pile clamping cylinders 7 are both arranged above the pile clamping plate synchronous ring 4. The cylinder body of the pile clamping cylinder 7 is hinged and fixed to the lifting pile extraction base 2, and the piston rod of the pile clamping cylinder 7 is hinged and fixed to the pile clamping plate synchronous ring 4. Therefore, the two synchronously operating pile clamping cylinders 7 can control the pile clamping plate synchronous ring 4 to move along the height direction.

[0032] Refer to Figure 3 and Figure 4A plurality of pile clamping plates 5 are also arranged in the lifting pile pulling seat 2, and the plurality of pile clamping plates 5 are distributed along the inner ring of the pile clamping plate synchronization ring 4. It should be noted here that the number of pile clamping plates 5 of the present application is relatively large, so that when the plurality of pile clamping plates 5 are synchronously controlled to clamp and fix the engineering piles, the side walls of the engineering piles are almost completely surrounded, thereby improving the fixing effect of the engineering piles. A linkage mechanism is arranged between each pile clamping plate 5 and the pile clamping plate synchronization ring 4, so that under the synchronous drive of the two pile clamping cylinders 7, the pile clamping plate synchronization ring 4 is controlled to move along the height direction, and then the plurality of pile clamping plates 5 are synchronously controlled to clamp and fix and release the engineering piles through each linkage mechanism. The linkage mechanism includes a control arm 8 and a telescopic arm 9, which are fixedly connected and the angle formed between the control arm 8 and the telescopic arm 9 is an obtuse angle. A hinge seat 10 is provided at each linkage mechanism on the lifting pile pulling seat 2, and the connection part between the control arm 8 and the telescopic arm 9 is hinged and fixed on the hinge seat 10, so the control arm 8 and the telescopic arm 9 can rotate around the hinge point. The end of the control arm 8 away from the telescopic arm 9 is fixedly connected to the pile clamping plate 5, and the angle formed between the control arm 8 and the pile clamping plate 5 is also an obtuse angle.

[0033] The telescopic lever 9 includes a lever arm 1 91 and a lever arm 2 92. The lever arm 1 91 is fixedly connected to the control lever arm 8. Specifically, the connection portion between the control lever arm 8 and the lever arm 1 91 is hingedly fixed on the hinge seat 10. The lever arm 2 92 is hingedly fixed to the pile clamp plate synchronization ring 4. The lever arm 1 91 is sleeved on the outside of the lever arm 2 92 and the lever arm 1 91 and the lever arm 2 92 can be telescopically adjusted. Relying on the telescopic and adjustable characteristics of the telescopic lever arm 9, under the drive of the two pile clamp cylinders 7, the pile clamp plate synchronization ring 4 can control each linkage mechanism and then synchronously control the operation of each pile clamp plate 5, so as to achieve the purpose of fixing and loosening the engineering piles. Taking into account that the telescopic lever 9 is more stable and structurally more reliable during operation, a limiting protrusion 921 can be set on the side wall of the second lever 92, and a limiting waist hole 911 can be set through the side wall of the first lever 91. The limiting protrusion 921 is located in the limiting waist hole 911 and the limiting protrusion 921 can move in the limiting waist hole 911 along the telescopic adjustment direction of the telescopic lever 9.

[0034] During construction, the old engineering pile extraction device is placed at the old pile position, and the engineering pile passes through the fixed base 1 and the lifting pile extraction seat 2. In the initial state, the two pile extraction cylinders 3 control the lifting pile extraction seat 2 to be in a lower posture, and the two pile clamping cylinders 7 synchronously control the multiple pile clamping plates 5 to be in an open state through the pile clamping plate synchronization ring 4 and each linkage mechanism. When pulling piles, the two pile clamping cylinders 7 synchronously control the multiple pile clamping plates 5 to be in a closed state through the pile clamping plate synchronization ring 4 and each linkage mechanism, that is, synchronously control the multiple pile clamping plates 5 to clamp and fix the engineering piles, and then the pile extraction cylinders 3 control the lifting pile extraction seat 2 to move up, that is, control the lifting pile extraction seat 2 to be in a higher posture, so as to achieve the purpose of pulling piles. The above steps are repeated several times to complete the pile pulling work.

[0035] Reference Figure 4 It should also be noted that a rubber layer 11 made of rubber pads can be provided on the side wall of the pile clamping plate 5 for clamping the engineering pile. The provision of the rubber layer 11 can increase the friction and clamping tightness between the pile clamping plate 5 and the engineering pile, thereby improving the fixing effect on the engineering pile.

[0036] The implementation principle of an old engineering pile extraction device in an embodiment of the present application is as follows: the old engineering pile extraction device is placed at the old pile position during construction, and the engineering pile passes through the fixed base 1 and the lifting pile extraction seat 2. In the initial state, the pile extraction cylinder 3 controls the lifting pile extraction seat 2 to be in a lower posture, and the pile clamping execution unit synchronously controls the multiple pile clamping plates 5 to be in an open state through the pile clamping plate synchronization ring 4 and each linkage mechanism. When pulling piles, the pile clamping execution unit synchronously controls the multiple pile clamping plates 5 to be in a closed state through the pile clamping plate synchronization ring 4 and each linkage mechanism, that is, synchronously controls the multiple pile clamping plates 5 to clamp and fix the engineering piles, and then the pile extraction cylinder 3 controls the lifting pile extraction seat 2 to move up, that is, controls the lifting pile extraction seat 2 to be in a higher posture, so as to achieve the purpose of pulling piles. The above steps are repeated several times to complete the pile pulling work. The old engineering pile removal device of the present application can clamp and fix the engineering piles by setting more pile clamping plates 5 but only using one pile clamping plate synchronization ring 4 for synchronization control, which can improve the fixing effect of the engineering piles. At the same time, it is not necessary to configure a pile clamping execution unit for each pile clamping plate 5, so that the cost investment of the pile clamping execution unit, that is, the equipment, can be reduced.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for removing old engineering piles, characterized in that: It includes a fixed base (1) and a lifting pile extracting base (2). The lifting pile extracting base (2) is arranged above the fixed base (1). Through holes for engineering piles to pass through are provided on both the lifting pile extracting base (2) and the fixed base (1). At least two pile extracting oil cylinders (3) are arranged between the lifting pile extracting base (2) and the fixed base (1). The cylinder body of the pile extracting oil cylinder (3) is fixed on the lifting pile extracting base (2), and the piston rod of the pile extracting oil cylinder (3) is fixed on the fixed base (1). A pile clamping plate synchronous ring (4) is arranged in the through hole of the lifting pile extracting base (2). A pile clamping execution unit is also arranged on the lifting pile extracting base (2). The pile clamping execution unit can drive the pile clamping plate synchronous ring (4) to move in the height direction. A plurality of pile clamping plates (5) are arranged in the lifting pile extracting base (2). The plurality of pile clamping plates (5) are distributed along the inner circle of the pile clamping plate synchronous ring (4). A linkage mechanism is arranged between each pile clamping plate (5) and the pile clamping plate synchronous ring (4). Under the drive of the pile clamping execution unit, the pile clamping plate synchronous ring (4) is controlled to move along the height direction, and then a plurality of pile clamping plates (5) are synchronously controlled to clamp and fix or release the engineering pile through each linkage mechanism.

2. The old engineering pile removal device according to claim 1, characterized in that: At least two U-shaped guide rails (6) are arranged in the through hole of the lifting pile extracting base (2). The U-shaped guide rails (6) are distributed along the inner circle of the lifting pile extracting base (2). The U-shaped guide rails (6) are fixedly connected to the lifting pile extracting base (2), and a track extending in the height direction is formed between the U-shaped guide rails (6) and the lifting pile extracting base (2). The pile clamping plate synchronous ring (4) passes through each track, and the pile clamping plate synchronous ring (4) can move along the height direction in each track.

3. The old engineering pile removal device according to claim 1, characterized in that: The pile clamping execution unit includes at least two pile clamping oil cylinders (7). Each pile clamping oil cylinder (7) is distributed along the circumference of the lifting pile extracting base (2). The cylinder body of the pile clamping oil cylinder (7) is hinged and fixed on the lifting pile extracting base (2), and the piston rod of the pile clamping oil cylinder (7) is hinged and fixed on the pile clamping plate synchronous ring (4).

4. The old engineering pile removal device according to claim 1, characterized in that: The linkage mechanism includes a control force arm (8) and a telescopic force arm (9). The control force arm (8) and the telescopic force arm (9) are fixedly connected, and an obtuse angle is formed between the control force arm (8) and the telescopic force arm (9). An articulated seat (10) is arranged on the lifting pile extracting base (2) at each linkage mechanism. The connecting part of the control force arm (8) and the telescopic force arm (9) is hinged and fixed on the articulated seat (10). The end of the control force arm (8) far from the telescopic force arm (9) is fixedly connected to the pile clamping plate (5), and an obtuse angle is formed between the control force arm (8) and the pile clamping plate (5). The end of the telescopic force arm (9) far from the control force arm (8) is hinged and fixed to the pile clamping plate synchronous ring (4).

5. The old engineering pile removal device according to claim 4, characterized in that: The telescopic lever arm (9) comprises a lever arm 1 (91) and a lever arm 2 (92), wherein the lever arm 1 (91) is fixedly connected to the control lever arm (8), the lever arm 2 (92) is hingedly fixed to the pile clamp plate synchronization ring (4), the lever arm 1 (91) is sleeved on the outside of the lever arm 2 (92), and the lever arm 1 (91) and the lever arm 2 (92) can be telescopically adjusted.

6. The old engineering pile removal device according to claim 5, characterized in that: A limiting protrusion (921) is provided on the second force arm (92), a limiting waist hole (911) is provided through the first force arm (91), the limiting protrusion (921) is arranged in the limiting waist hole (911), and the limiting protrusion (921) can move in the limiting waist hole (911) along the direction of telescopic adjustment of the telescopic force arm (9).

7. The old engineering pile removal device according to claim 1, characterized in that: A rubber layer (11) is provided on the surface of the pile clamping plate (5) that clamps the engineering pile.

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