Pile foundation casing pulling-out device and system thereof

Abstract

The utility model relates to a device and a system for pulling out a pile casing of a pile foundation. The sliding assembly is arranged on the base; the jacking assembly is arranged on the sliding assembly; the plurality of clamping assemblies are connected with the jacking assembly; the telescopic connecting assembly is arranged between the clamping assemblies; a through hole is formed in the base; the telescopic connecting assembly extends to drive the jacking assembly to move outwards in the sliding assembly in the direction away from the center of the through hole of the base so as to enlarge the inner diameter of the clamping assembly; the telescopic connecting assembly is shortened to drive the jacking assembly to move inwards in the sliding assembly in the direction close to the center of the through hole of the base, so that the inner diameter of the clamping assembly is reduced. According to the pile foundation casing pulling-out device, an operator does not need to assist in pulling out a pile foundation casing in a construction area; the jacking assembly acts at the same time at the upward jacking part and the downward resetting part, so that the pile foundation casing is evenly stressed in the pulling-out process, and the pile foundation casing is fully automatically, rapidly, smoothly and completely pulled out.

Description

Technical Field

[0001] The utility model relates to the field of mechanical structures, in particular to a pile foundation casing extraction device and a system thereof. Background Art

[0002] With the widespread use of full-follow-up steel casings, pile casings of various diameters often need to be pulled out. Therefore, when using pile pulling equipment, the force is often uneven during the clamping of the pile casing. On the one hand, the stress of the pile casing is too concentrated, causing deformation or damage to the pile casing, resulting in waste of pile casing materials and safety hazards; on the other hand, during the construction process of pulling out the pile casing, operators are required to assist in pulling out the pile casing in the construction area. This method not only has safety hazards, but also has low efficiency.

[0003] The Chinese patent with the announcement number CN106996094B discloses a fully automatic pipe pulling machine and its application for pulling out the anti-seepage wall joint pipe, and discloses a technical solution in which the clamping ring is composed of four arc-shaped clamping blocks, the first and last two clamping blocks are connected to the clamping cylinder, and the remaining clamping blocks are connected to each other in sequence; in this technical solution, there is a technical problem that the first and last two clamping blocks and the remaining clamping blocks exert uneven force on the pipe; in addition, the Chinese patent with the announcement number CN106996094B discloses a pipe pulling machine, the chassis includes four horseshoe-shaped pipe boots, the pipe boots are respectively located at the four corners of the chassis, and the straight parts of the four pipe boots are parallel to each other, the convex surfaces of the curved parts of the four pipe boots face the clamping ring, and the lifting cylinder is stuck in the pipe boot. In this technical solution, the straight parts of the four pipe boots are parallel to each other, and the cross-clamping method makes one side of the pipe boot subjected to much greater force than the other side, and there is a technical problem that the lifting cylinder does not slide smoothly in the pipe boot.

[0004] Therefore, how to provide a mechanical device for pulling out pile foundation casing so that the pile foundation casing is evenly stressed during the pulling out process and is suitable for pile foundation casings of different diameters, so as to achieve fully automatic, fast, smooth and complete pulling out of the pile foundation casing, is a technical problem that needs to be solved urgently in this field. Utility Model Content

[0005] In order to solve at least one of the above technical problems, the utility model provides a pile foundation casing extraction device, comprising: a base;

[0006] A sliding assembly disposed on the base;

[0007] A lifting assembly disposed on the sliding assembly;

[0008] A clamping assembly connected to the lifting assembly;

[0009] and a telescopic connection assembly disposed between the clamping assemblies;

[0010] A through hole is provided on the base; when the telescopic connection assembly extends, it drives the jacking assembly to move outward in the sliding assembly in a direction away from the center of the through hole of the base, so as to expand the inner diameter of the clamping assembly; when the telescopic connection assembly shortens, it drives the jacking assembly to move inward in the sliding assembly in a direction close to the center of the through hole of the base, so as to reduce the inner diameter of the clamping assembly.

[0011] In this embodiment, a pile foundation casing pulling-out device is provided. The pile foundation casing passes through the center of the clamping assembly and the through hole of the base to a proper position; when the telescopic connection assembly shortens, it drives the jacking assembly to move inward in the sliding assembly in a direction close to the center of the through hole of the base, so as to reduce the inner diameter of the clamping assembly, and the clamping assembly clamps the pile foundation casing; then, the jacking assembly jacks up, driving the clamped pile foundation casing to rise; the telescopic connection assembly drives the jacking assembly to move outward in the sliding assembly in a direction away from the center of the through hole of the base, so as to expand the inner diameter of the clamping assembly, and the clamping assembly releases the pile foundation casing; then, the jacking assembly resets downward; through the continuous processes of clamping and releasing of the above clamping assembly, and the rising and falling of the jacking oil cylinder, the operator does not need to assist in pulling out the pile foundation casing in the construction area; since the direction of the sliding assembly points to the center of the through hole of the base, the two sides of the sliding assembly can be evenly stressed, and the jacking assembly moves more smoothly in the sliding assembly; driven by the jacking assembly, each part of the clamping assembly clamps or releases towards the center of the hole simultaneously, and each part of the jacking assembly acts simultaneously when jacking up and resetting downward, realizing that the pile foundation casing is evenly stressed during the pulling-out process, and the pile foundation casing is pulled out fully automatically, quickly, smoothly and completely.

[0012] Furthermore, the jacking assembly penetrates through the clamping assembly and is fixedly connected to the clamping assembly.

[0013] Furthermore, the jacking assembly includes a plurality of jacking cylinders arranged at equal intervals along the edge of the through hole of the base, and the jacking cylinders jack up synchronously and reset downward synchronously.

[0014] Furthermore, the clamping assembly further includes a plurality of arc-shaped clamping flaps; the clamping flaps are directly connected or indirectly connected through a telescopic connection assembly.

[0015] Furthermore, the clamping assembly includes a first clamping flap, a second clamping flap, a third clamping flap and a fourth clamping flap, and the telescopic connection assembly is connected between the first clamping flap and the second clamping flap and between the third clamping flap and the fourth clamping flap.

[0016] Furthermore, at the connection where the clamping flaps are directly connected, a sliding groove is further included; the connecting piece between two clamping flaps is slidably arranged in the sliding groove.

[0017] Further, the telescopic connection component includes a first telescopic cylinder and a second telescopic cylinder; both ends of the first telescopic cylinder are respectively hinged to the first clamping flap and the second clamping flap, and both ends of the second telescopic cylinder are respectively hinged to the third clamping flap and the fourth clamping flap.

[0018] Further, the clamping component includes arc-shaped jaws with different diameters, which are detachably arranged inside the clamping component; several protrusions are arranged on the jaws.

[0019] Further, a sliding part is arranged below the jacking component and is movably connected to the sliding component; the sliding component includes: a chute, an upper limit plate arranged above the chute, and a front limit plate arranged at the front end of the sliding component and close to the center of the base through hole; the center line of the chute points to the center of the base through hole.

[0020] A pile foundation casing pulling-out system includes any of the above-mentioned pile foundation casing pulling-out devices and a control device connected to the pile foundation casing pulling-out device. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following briefly introduces the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the structures shown in these drawings. In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale.

[0022] Figure 1 It is a three-dimensional view of an embodiment of a pile foundation casing pulling-out device of the present utility model;

[0023] Figure 2 It is a partial three-dimensional view of an embodiment of a pile foundation casing pulling-out device of the present utility model;

[0024] Figure 3 It is a front view of an embodiment of a pile foundation casing pulling-out device of the present utility model;

[0025] Figure 4 It is a three-dimensional view of an embodiment of the jaws of a pile foundation casing pulling-out device of the present utility model;

[0026] Figure 5 It is a schematic diagram of a remote controller of a pile foundation casing pulling-out system of the present utility model. Detailed Embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0029] It should also be noted that if there are directional indications involved in the embodiments of the present utility model, such as up, down, left, right, front, back..., then the directional indications are only used to explain the relative position relationship and movement conditions between components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly. In addition, if there are descriptions such as "first, second", "S1, S2", "step one, step two" in the embodiments of the present utility model, such descriptions are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features or indicating the execution order of the method, etc. Those skilled in the art can understand that all those that do not violate the key points of the utility model under the technical concept of the utility model should be included in the protection scope of the present utility model.

[0030] The present utility model provides a pile foundation casing pulling-out device, referring to Figure 1 , including: a base 1; a sliding component 2 disposed on the base 1; a jacking component 3 disposed on the sliding component 2; a clamping component 4 connected to the jacking component 3; and a telescopic connecting component 5 disposed between the clamping components 4;

[0031] A through hole is provided on the base 1;

[0032] The telescopic connecting component 5 extends, driving the jacking component 3 to move outward in the sliding component 2 in a direction away from the center of the through hole of the base 1, so as to expand the inner diameter of the clamping component 4;

[0033] The telescopic connecting component 5 shortens, driving the jacking component 3 to move inward in the sliding component 2 in a direction close to the center of the through hole of the base 1, so as to reduce the inner diameter of the clamping component 4.

[0034] In this embodiment, a pile foundation casing extraction device is provided. The construction personnel pass the pile foundation casing through the center of the clamping assembly and the base through hole to a suitable position; the telescopic connection assembly is shortened, driving the jacking assembly to move inward in the sliding assembly toward the center of the base through hole to reduce the inner diameter of the clamping assembly, and the clamping assembly clamps the pile foundation casing; then, the jacking assembly is lifted upward, driving the clamped pile foundation casing to rise; the telescopic connection assembly drives the jacking assembly to move outward in the sliding assembly toward the center of the base through hole to expand the inner diameter of the clamping assembly, and the clamping assembly releases the assembly pile foundation casing; then, The lifting assembly is reset downward; through the continuous process of clamping and loosening of the above-mentioned clamping assembly, and the rising and falling of the jacking cylinder, the operator does not need to assist in pulling out the pile foundation casing in the construction area; because the direction of the sliding assembly points to the center of the through hole of the base, the two sides of the sliding assembly can be evenly stressed, and the lifting assembly moves more smoothly in the sliding assembly; driven by the jacking assembly, the clamping assembly is clamped or loosened toward the center of the hole at the same time, and the parts of the jacking assembly that are lifted upward and reset downward move at the same time, so that the pile foundation casing is evenly stressed during the extraction process, and the pile foundation casing is fully automatically, quickly, smoothly and completely extracted. Optionally, the jacking assembly and the telescopic connection assembly are mechanisms with telescopic power such as hydraulic cylinders or pneumatic cylinders or screws driven by servo motors. More preferably, the hydraulic cylinders or pneumatic cylinders or screws driven by servo motors in the jacking assembly and the telescopic connection assembly are connected in parallel and operate independently to better adapt to the on-site conditions of the construction area and improve the flexibility and effectiveness of the control of the pile foundation extraction device.

[0035] Preferably, reference Figure 1 The lifting component 3 passes through the clamping component 4 and is fixedly connected to the clamping component 4.

[0036] In this embodiment, the lifting assembly passes through the clamping assembly and is fixedly connected to the clamping assembly, which can increase the connection strength between the clamping assembly and the lifting assembly and prevent the clamping assembly from being deformed.

[0037] Preferably, reference Figure 1 , a lifting lug 6 is arranged above the clamping assembly 4. More preferably, the lifting lug 6 is evenly arranged above the clamping assembly 4, and the number can be arbitrarily set by those skilled in the art.

[0038] In this embodiment, a lifting lug is arranged above the clamping assembly 4, which can meet the need of arbitrary movement of the pile foundation casing extraction device. The structure is relatively intuitive and simple, and is easy to implement. At the same time, the uniform arrangement of the lifting lug above the clamping assembly can make the pile foundation casing extraction device evenly stressed during movement, prevent shaking during movement of the device, and improve the efficiency of device movement.

[0039] Preferably, the jacking assembly 3 includes: a plurality of jacking cylinders arranged at equal intervals along the edge of the through hole of the base, and the jacking cylinders jack upward synchronously and reset downward synchronously; for example, refer to Figure 1 and Figure 2 , the jacking assembly 3 includes a first jacking cylinder 31, a second jacking cylinder 32, a third jacking cylinder 33 and a fourth jacking cylinder 34, and the first jacking cylinder 31, the second jacking cylinder 32, the third jacking cylinder 33 and the fourth jacking cylinder 34 are arranged at equal intervals along the edge of the through hole of the base.

[0040] In this embodiment, a plurality of jacking cylinders of the jacking assembly are arranged at equal intervals along the edge of the through hole of the base, and the jacking cylinders of the jacking assembly jack upward synchronously and reset downward synchronously, which can make the pile foundation casing to be pulled more evenly stressed and prevent the pile foundation casing from deforming or being damaged.

[0041] Preferably, refer to Figure 1 and Figure 2 , the clamping assembly 4 includes: a plurality of arc-shaped clamping petals; the clamping petals are directly connected or indirectly connected through a telescopic connection assembly. For example, refer to Figure 2 , the clamping assembly 4 includes a first clamping petal 41, a second clamping petal 42, a third clamping petal 43 and a fourth clamping petal 44, and the telescopic connection assembly 5 is connected between the first clamping petal 41 and the second clamping petal 42 and between the third clamping petal 43 and the fourth clamping petal 44, and the first clamping petal 41, the fourth clamping petal 44 and the second clamping petal 42, the third clamping petal 43 are directly connected.

[0042] In this embodiment, the clamping assembly includes a plurality of clamping petals, which can be better matched with the diameter of the pile foundation casing to be pulled out; the clamping petals are directly connected to the telescopic connection assembly, which can adaptively adjust the inner diameter of the clamping assembly and better ensure that the clamping petals clamp or loosen the pile foundation casing; the direct connection between two clamping petals can reduce the arrangement quantity of the telescopic connection assembly and reduce the cost.

[0043] More preferably, at the direct connection part between the clamping petals, a sliding groove is further included; the connecting piece between two clamping petals is slidably arranged in the sliding groove.

[0044] In this embodiment, when the telescopic connection assembly extends, it drives the clamping petals connected to the clamping assembly to loosen synchronously, and between the two directly connected clamping petals, they slide in the sliding groove to expand the diameter change range of the clamping petals, reduce the quantity of the telescopic connection assembly and reduce the cost.

[0045] Preferably, refer to Figure 2 and Figure 3 , the telescopic connection assembly 5 includes a first telescopic cylinder 51 and a second telescopic cylinder 52; two ends of the first telescopic cylinder 51 are respectively hinged to the first clamping petal 41 and the second clamping petal 42, and two ends of the second telescopic cylinder are respectively hinged to the third clamping petal 43 and the fourth clamping petal 44.

[0046] In this embodiment, the telescopic cylinder of the telescopic connection assembly is arranged between the two clamping petals. When the first telescopic cylinder and the second telescopic cylinder extend, the four clamping petals are driven to loosen synchronously; when the first telescopic cylinder and the second telescopic cylinder contract, the four clamping petals are driven to clamp synchronously. The four clamping petals of the clamping assembly loosen and clamp synchronously, which can make the pile foundation casing more evenly stressed during the clamping and loosening processes.

[0047] Preferably, referring to Figure 4 , the clamping assembly 4 further includes arc-shaped clamping tiles 7 with different diameters, which are detachably arranged inside the clamping assembly 7; several protrusions 7a are arranged on the clamping tiles.

[0048] In this embodiment, arc-shaped clamping tiles with different diameters are arranged inside the clamping assembly and are detachably arranged inside the clamping assembly. The arc-shaped clamping tiles are a set of detachable installation parts adapted to different pile foundation casing diameters. Operators can select different clamping tiles according to different pile foundation casing diameters to meet the needs of clamping pile foundation casings with different diameters; several protrusions on the clamping tiles can increase the friction between the clamping assembly and the pile foundation casing, so as to facilitate the clamping assembly to better clamp the pile foundation casing. For example, referring to Figure 2 and Figure 4 , connection ears are arranged on the side of the clamping tile, and a first hole 7b is arranged at the central part of the connection ear; a second hole 7c adapted to the first hole 7b is arranged on the clamping assembly. The clamping tile 7 is detachably installed with the clamping assembly 4 through the first hole 7b and the second hole 7c. The installation method can be selected as threaded connection, pin connection or riveting, etc., to facilitate the disassembly and installation of clamping tiles with different diameters according to different pile foundation casing diameters. More preferably, the protrusions 7a on the clamping tile are arranged in two rows in the up and down direction and are in the shape of long strips; wavy friction lines are arranged on the protrusions; the wavy friction lines further increase the contact area and friction between the clamping petals and the pile foundation casing, so as to facilitate the clamping assembly to better clamp the pile foundation casing to be pulled out.

[0049] Preferably, referring to Figure 2 and Figure 3 , a sliding part 3a movably connected to the sliding assembly 2 is arranged below the jacking assembly 3; the sliding assembly 2 includes: a sliding groove 21, an upper limiting plate 22 arranged above the sliding groove 21, and a front limiting plate 23 arranged at the front end of the sliding assembly 2 and close to the center of the through hole of the base 1; the center line of the sliding groove 21 points to the center of the through hole of the base; the width of the sliding groove 21 is slightly larger than the sliding part 3a below the jacking assembly 3; the limiting width of the upper limiting plate 22 is smaller than the width of the sliding part 3a. More preferably, the sliding groove 21 and the front limiting plate 23 are combined into a U-shaped groove to facilitate the jacking assembly to slide conveniently in the sliding groove without overflowing the sliding groove.

[0050] In this embodiment, the sliding assembly includes a chute, an upper limit plate, and a front limit plate, which restrict the jacking assembly to move closer to or away from the center of the base hole only along the chute of the sliding assembly. At the same time, the front limit plate restricts the stroke of the jacking assembly and the clamping assembly approaching the pile foundation casing, preventing the clamping assembly and the pile foundation casing from deforming due to extrusion; the upper limit plate restricts the jacking assembly and the clamping assembly from detaching from the base during the upward jacking process of the jacking assembly. More preferably, a number of reinforcing ribs 24 are symmetrically arranged on both sides of the chute, so that when the sliding part of the jacking assembly slides in the chute, the chute can withstand more external forces, preventing the chute from deforming and improving the stability of the device. More preferably, a cleaning hole 25 is provided on the front limit plate. Since the working conditions of the pile foundation casing pulling-out device are complex, sundries often enter the chute and cause the device to jam. The cleaning agent is flushed into the chute from the opening of the chute, and the sundries are flushed out from the cleaning hole 25, reducing the cleaning and maintenance time of the pile foundation casing pulling-out device and improving the working efficiency of the pile foundation casing pulling-out device. More preferably, rolling elements are provided on the sliding part 3a of the jacking assembly, optimizing the sliding friction of the sliding part 3a below the jacking cylinder in the chute of the limiting assembly into rolling friction, reducing the friction resistance and wear, and improving the working efficiency and service life of the device. Optionally, the rolling elements of the sliding part of the jacking assembly are rolling bearings.

[0051] On the other hand, the present invention also provides a pile foundation casing pulling-out system, including a pile foundation casing pulling-out device and a control device;

[0052] The pile foundation casing pulling-out device is any one of the above-mentioned pile foundation casing pulling-out devices;

[0053] The control device is used to control the linkage action of the jacking assembly and the telescopic connecting assembly. Preferably, the control device includes: a control handle, a control cabinet, and a jacking assembly 3 and a telescopic connecting assembly 5 connected in sequence. The start, stop, and reset of each component of the pile foundation casing are controlled by the control handle through the control cabinet. It should be noted that taking the oil cylinder as an example, controlling when it operates through a remote control handle and other means is a conventional technical means in this field and will not be elaborated here.

[0054] In this embodiment, the pile foundation casing pulling-out system is provided with a control device. The control device realizes functions such as starting, stopping, staying in place, resetting, and emergency stopping through the control handle and the control cabinet, simplifies the operation mode, reduces manual operation, and improves the safety of the operation; more preferably, as Figure 5As shown, the pile foundation casing extraction device further includes: a remote controller 8 and a receiver. The receiver is connected to the electric control cabinet. The remote controller 8 is used to transmit radio control signals, and the receiver receives the radio control signals transmitted by the remote controller 8 to achieve the functions of remotely controlling the pile foundation casing extraction device and starting, stopping, maintaining in place, resetting, and emergency stopping of each component in the device. This allows the operator to remotely control during the operation process, facilitating personnel operation and increasing the safety and convenience of operation of the pile foundation casing extraction device.

[0055] In this embodiment, each oil cylinder in the pile foundation casing extraction device is connected in parallel and is respectively connected to a control valve. By adopting an independent control method, it can better adapt to the on-site working conditions of the construction area, improve the flexibility and effectiveness of the control of the pile foundation extraction device, and further expand the application range of the pile foundation extraction device.

[0056] The above-mentioned pile foundation casing extraction system is created based on the above-mentioned pile foundation casing extraction device, and the combination of its technical effects and technical features will not be elaborated here. The above-described embodiments only represent several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A pile foundation casing extraction device, characterized in that: include: Base; A sliding assembly disposed on the base; A lifting assembly disposed on the sliding assembly; A clamping assembly connected to the jacking assembly; and a telescopic connection assembly disposed between the clamping assemblies; A through hole is provided on the base; the telescopic connection component is extended to drive the lifting component to move outward in the sliding component in a direction away from the center of the through hole of the base, so as to expand the inner diameter of the clamping component; The telescopic connection component is shortened, driving the lifting component to move inward in the sliding component toward the center of the base through hole, so as to reduce the inner diameter of the clamping component.

2. The pile foundation casing extraction device according to claim 1, characterized in that: The lifting component passes through the clamping component and is fixedly connected to the clamping component.

3. The pile foundation casing extraction device according to claim 1, characterized in that: The lifting assembly comprises: a plurality of lifting cylinders arranged at equal intervals along the edge of the through hole of the base, and the lifting cylinders are lifted upward synchronously and reset downward synchronously.

4. The pile foundation casing extraction device according to claim 1, characterized in that: The clamping assembly comprises a plurality of arc-shaped clamping flaps; the clamping flaps are directly connected to each other or indirectly connected through a telescopic connecting assembly.

5. The pile foundation casing extraction device according to claim 4, characterized in that: The clamping assembly comprises a first clamping flap, a second clamping flap, a third clamping flap and a fourth clamping flap, and the telescopic connection assembly is connected between the first clamping flap and the second clamping flap and between the third clamping flap and the fourth clamping flap.

6. The pile foundation casing extraction device according to claim 4, characterized in that: The connection between the flaps directly connected also includes a sliding groove; the connecting piece between the two flaps can be slidably arranged in the sliding groove.

7. The pile foundation casing extraction device according to claim 5, characterized in that: The telescopic connection assembly comprises a first telescopic cylinder and a second telescopic cylinder; two ends of the first telescopic cylinder are respectively hinged to the first clamping flap and the second clamping flap, and two ends of the second telescopic cylinder are respectively hinged to the third clamping flap and the fourth clamping flap.

8. The pile foundation casing extraction device according to claim 1, characterized in that: The clamping assembly also includes arc-shaped slips with different diameters, which are detachably arranged on the inner side of the clamping assembly; and a plurality of protrusions are arranged on the slips.

9. The pile foundation casing extraction device according to any one of claims 1 to 8, characterized in that: A sliding part movably connected to the sliding component is arranged below the jacking component; The sliding assembly includes: a sliding groove, an upper limit plate arranged above the sliding groove, and a front limit plate arranged at the front end of the sliding assembly and close to the center of the base through hole; the center line of the sliding groove points to the center of the base through hole.

10. A pile foundation casing extraction system, characterized in that: The invention comprises a pile foundation casing extraction device as claimed in any one of claims 1 to 9 and a control device connected to the pile foundation casing extraction device.

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