A base anti-pulling prefabricated hollow pipe pile body steel stripping device and a use method thereof

Abstract

The application discloses a foundation uplift prefabricated hollow pipe pile body steel bar stripping device and a use method thereof. The device comprises an adjusting positioning unit for positioning the outer side of the end of the prefabricated hollow pipe pile; a fine adjustment driving unit fixedly connected with the adjusting positioning unit and used for telescopic adjustment of a stripping position; and a stripping driving unit fixedly connected with the other end of the fine adjustment driving unit, which comprises a rotating assembly for driving self-rotation and a stripping execution assembly. The stripping execution assembly comprises a component connecting plate and a stripping cutter driving assembly for cutting a concrete layer. Through the end sleeve installation positioning mode, the end pile body steel bar of the prefabricated hollow pipe pile is stripped and treated. Meanwhile, the stripping device is used to strip and treat only the outer concrete layer, so that the exposed steel bar surface can be welded, the contact area of the extended steel bar and the pile body steel bar is increased, and the connection strength is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of steel stripping, more specifically, relates to a foundation uplift prefabricated hollow pipe pile body steel stripping device and a use method. BACKGROUND

[0002] With the development of the construction industry, in order to meet the requirements of parking and civil air defense, underground basements are now commonly used in building design. When the buoyancy of underground water is greater than the weight of the above-ground building, anti-floating design should be carried out, and uplift prefabricated hollow pipe piles are commonly used anti-floating measures. Uplift prefabricated hollow pipe piles rely on the friction between the pile body and the soil layer to resist axial tension, and the pile is prefabricated, and the foundation is cast-in-place structure. Therefore, the connection performance of the uplift prefabricated hollow pipe pile and the foundation will directly affect whether the actual uplift force can meet the design requirements. At present, the connection between the uplift prefabricated hollow pipe pile and the foundation is commonly achieved by anchoring the reserved pile body steel of the prefabricated hollow pipe pile into the foundation, inserting the hollow part of the pile body into the steel, pouring concrete, anchoring the steel into the foundation, and transmitting the axial tension through the connection between the pile body steel and the foundation. However, there are many reserved pile body steels, and the subsequent extension of the pile body steel is relatively complicated, therefore, it is of great significance to propose a device that can effectively assist in connecting and extending the pile body steel to improve the tensile strength.

[0003] Chinese invention patent CN109281317A discloses a pile breaking method, specifically relates to the field of construction technology, adopts a ring cutting method, sequentially includes pit excavation; measurement and line laying, determine the ring cutting line; use a cutting machine to cut the ring joint; manually chisel out a ring notch above the cutting line; manually chisel off the reinforcement protective layer above the ring notch with a pneumatic pick, strip the reinforcement; drill a hole in the ring notch, add a drill to cut off the ineffective pile body; use hoisting equipment to lift off the ineffective pile body and straighten the reinforcement, brush cement slurry on the surface of the reinforcement to prevent rust; Chinese invention patent CN113275115B discloses a high-efficiency and environmentally-friendly automatic breaking process for reinforced concrete beams and columns, comprising the following steps: step one, unload the reinforced concrete beam and column to the position of the unloading port, and convey it to the occlusion material conveying mechanism by the upper conveying belt; step two, the occlusion material conveying mechanism drives the reinforced concrete beam and column to move forward and backward at a certain speed; step three, the surface breaking mechanism automatically shears the stirrups and surface concrete in the reinforced concrete beam and column; step four, the internal breaking mechanism automatically breaks the deep layer concrete in the reinforced concrete beam and column; step five, the separation mechanism separates the steel and concrete.

[0004] The above patent technology realizes the stripping of the steel bars from the cement by artificial or pipeline breaker form steel bar stripping mode, but still has the following technical problems: (1) If artificial stripping is used, it is difficult, high in construction cost and low in efficiency, and if the quantity is large, it will hinder the construction period; (2) If the pipeline stripping method is used, it is difficult to meet the transfer of nearly ten meters of uplift pile for the uplift pile construction environment, and the equipment size is large, which increases the installation problem of the construction equipment and should be miniaturized; (3) For the steel bar stripping body of the prefabricated hollow pipe pile, only the end part near the upper end is needed, and the whole prefabricated hollow pipe pile does not need to be stripped, so the end part of the pipe pile needs to be processed, which can reduce the equipment size and cost, and simplify the use method. SUMMARY

[0005] In view of the above defects or improvement needs of the prior art, the present application provides a foundation uplift prefabricated hollow pipe pile body steel bar stripping device, which adopts an end part sleeve installation positioning method to strip and process the end part of the prefabricated hollow pipe pile. The steel bar stripping device is miniaturized to a great extent, reduces the load energy consumption, and facilitates the operation of the construction personnel. At the same time, the stripping device only strips and processes the outer concrete layer, and the construction personnel can weld the exposed steel bar surface, increase the contact area of the extended steel bar and the pile body steel bar, effectively improve the connection strength, and avoid the technical problem that it is difficult to perform subsequent construction when the threaded connection section in the pile body steel bar is completely removed. The construction personnel only need to sleeve the device on the end part of the prefabricated hollow pipe pile, and after positioning, the end part of the pile body steel bar can be automatically stripped to achieve the technical effect of half exposure. It includes:

[0006] An adjusting positioning unit for positioning the outside of the end part of the prefabricated hollow pipe pile, which includes a pair of semicircular first housings connected by a rotating shaft at one end, a clamping part for clamping the first housings, a central clamping hole for passing through the prefabricated hollow pipe pile surrounded by the first housings, and a positioning block for directly contacting and clamping the prefabricated hollow pipe pile;

[0007] A fine adjustment driving unit fixedly connected with the adjusting positioning unit for adjusting the stripping position;

[0008] A stripping driving unit fixedly connected with the other end of the fine adjustment driving unit, which includes a rotating assembly for driving itself to rotate, a stripping execution assembly fixedly connected with the rotating part of the rotating assembly,

[0009] The stripping execution assembly includes a component connection plate fixedly connected with the rotating part of the rotating assembly, and a stripping knife driving assembly installed on the upper surface of the component connection plate for cutting the concrete layer.

[0010] Preferably, the peeling knife driving assembly comprises:

[0011] The shell, the second sliding groove arranged in the shell, the sliding rod in sliding connection with the second sliding groove, the driving box fixedly connected with the sliding rod through the connecting plate, the peeling knife in sliding connection with the third sliding groove arranged in the driving box, the rack arranged below the peeling knife, the peeling knife driving gear fixedly connected with the driving box and driven by the motor and kept in engagement with the rack, and the knife head arranged at the extending end of the peeling knife.

[0012] Preferably, the adjusting and positioning unit further comprises:

[0013] The adjusting assembly for manually adjusting the position after the pre-positioning comprises the rotating handle in rotating connection with the first shell, the driving bevel gear in axial fixed connection with the rotating handle, the driven bevel gear in engagement with the driving bevel gear, and the rolling friction wheel in axial fixed connection with the driven bevel gear through the transmission shaft.

[0014] Preferably, the fine adjustment driving unit is a linear motor or a screw transmission module.

[0015] Preferably, the rotating assembly comprises:

[0016] The stator assembly comprises the stator ring plate fixedly connected with one end of the fine adjustment driving unit, the magnetic field coil arranged in the uniform annular array on the upper side of the stator ring plate, and the central hole arranged in the middle of the ring plate for passing through the prefabricated hollow pipe pile;

[0017] The rotor assembly comprises the rotor ring plate movably mounted above the stator ring plate and provided with a permanent magnet on the lower surface, and the rotor ring plate is fixedly connected with the component connecting plate.

[0018] Preferably, the peeling execution assembly further comprises:

[0019] The first sliding groove arranged in the shell and the protection spring arranged in the first sliding groove for buffering protection, one end of the protection spring is fixedly connected with the inner end surface of the first sliding groove, and the other end is fixedly connected with the connecting plate.

[0020] Preferably, the peeling execution assembly further comprises:

[0021] The metal detector fixedly connected with the upper side of the component connecting plate for sensing metal.

[0022] A use method of a basic anti-pulling prefabricated hollow pipe pile body steel bar peeling device, comprising the following steps:

[0023] S100: first according to the actual working condition length requirement, the required precast hollow pipe pile segment is reserved, then the pile body steel stripping device is sleeved on the outer wall of the precast hollow pipe pile, the first shell is clamped and positioned by the clamping part, at this time, the precast hollow pipe pile is in close contact with the positioning block and plays a clamping and positioning role;

[0024] S200: start the stripping execution assembly, control the forward movement of the stripping knife in the stripping knife driving assembly to contact the surface of the precast hollow pipe pile, then control the rotation assembly to rotate, so that the stripping knife driving assembly rotates, thereby stripping the outer concrete layer;

[0025] S300: control the fine adjustment driving unit to stretch forward and backward along the central axis direction of the precast hollow pipe pile, so that the stripping driving unit stretches forward and backward, thereby realizing the stripping of the pile body section within a certain length range at the end, and increasing the exposed length of the steel bar;

[0026] S400: loosen the clamping part, remove the device from the end of the precast hollow pipe pile, and the stripping operation of the pile body steel bar is completed.

[0027] Preferably, the step S100 further comprises the following steps:

[0028] S101: the worker first determines the equipment installation position;

[0029] S102: the equipment is sleeved on the outer wall of the precast hollow pipe pile and pre-installed by the clamping part;

[0030] S103: manually rotate the rotating handle to control the driving bevel gear to rotate, thereby driving the driven bevel gear to rotate, and further driving the rolling friction wheel to rotate, finally realizing the fine adjustment of the up-down movement position of the device body relative to the precast hollow pipe pile.

[0031] Overall, compared with the prior art, the above technical solutions conceived by the present application can achieve the following beneficial effects:

[0032] 1. The basic anti-pulling prefabricated hollow pipe pile body steel bar stripping device of the application, by adopting the end sleeve installation positioning mode, the end pile body steel bar of the prefabricated hollow pipe pile is stripped and treated, which not only greatly realizes the miniaturization of the steel bar stripping device, reduces the load energy consumption, and facilitates the operation of the construction personnel, at the same time, the stripping device only strips the outer concrete layer, the construction personnel can weld the exposed steel bar surface, which increases the contact area of the extended steel bar and the pile body steel bar, thereby effectively improving the connection strength, and avoiding the technical problem that it is difficult to carry out subsequent construction when the threaded connection section in the pile body steel bar is completely removed. The construction personnel only need to sleeve the device at the end of the prefabricated hollow pipe pile, and after positioning, the pile body steel bar at the end can be automatically stripped to achieve the technical effect of half exposure.

[0033] 2. The basic anti-pulling prefabricated hollow pipe pile body steel bar stripping device of the application, by adopting the gear and rack mechanism, the extension control of the stripping knife is realized, during use, only the motor driven stripping knife driving gear is controlled to rotate, thereby driving the rack part below the stripping knife to mesh transmission, and then realizing the extension movement of the stripping knife.

[0034] 3. The basic anti-pulling prefabricated hollow pipe pile body steel bar stripping device of the application, by setting the manual rotation adjusting mechanism, the technical problem that it is difficult to control the accurate installation position at one time when the staff sleeves the device on the outer wall of the prefabricated hollow pipe pile is solved, thereby reducing the installation difficulty of the staff and improving the work efficiency. During use, the staff first determines the equipment installation position; then sleeves the equipment on the outer wall of the prefabricated hollow pipe pile and pre-installs it by using the clamping part; then manually rotates the rotating handle to control the driving bevel gear to rotate, thereby driving the driven bevel gear to rotate, and then driving the rolling friction wheel to rotate, finally realizing the up and down movement position fine adjustment of the device body relative to the prefabricated hollow pipe pile.

[0035] 4. The basic anti-pulling prefabricated hollow pipe pile body steel bar stripping device of the application, by controlling the on-off sequence of the multi-phase magnetic field coil uniformly arranged above the stator annular plate, a driving magnetic field in different directions is generated, thereby attracting the multiple permanent magnets on the lower surface of the rotor annular plate, realizing the rotation of the rotating assembly, thereby effectively realizing the annular rotor driving containing a central hole, which is more suitable for the cylindrical outer wall machining condition. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a whole structure schematic view of the basic anti-pulling prefabricated hollow pipe pile body steel bar stripping device of the application;

[0037] Figure 2An overall structure schematic diagram of an adjusting and positioning unit of a foundation anti-pulling prefabricated hollow pipe pile body steel bar stripping device according to an embodiment of the present application;

[0038] Figure 3 A partial enlarged view A of a foundation anti-pulling prefabricated hollow pipe pile body steel bar stripping device according to an embodiment of the present application;

[0039] Figure 4 A side surface structure schematic diagram of a stripping driving unit of a foundation anti-pulling prefabricated hollow pipe pile body steel bar stripping device according to an embodiment of the present application;

[0040] Figure 5 An internal structure schematic diagram of a stripping driving unit of a foundation anti-pulling prefabricated hollow pipe pile body steel bar stripping device according to an embodiment of the present application;

[0041] Figure 6 A stripping unit structure schematic diagram of a foundation anti-pulling prefabricated hollow pipe pile body steel bar stripping device according to an embodiment of the present application;

[0042] Figure 7 An internal structure schematic diagram of a stripping knife driving unit of a foundation anti-pulling prefabricated hollow pipe pile body steel bar stripping device according to an embodiment of the present application;

[0043] Figure 8 A flow chart of a use method of a foundation anti-pulling prefabricated hollow pipe pile body steel bar stripping device according to an embodiment of the present application.

[0044] In all the drawings, the same reference signs represent the same technical features, specifically: 1 - adjusting and positioning unit, 101 - first shell, 102 - rotating shaft, 103 - clamping part, 104 - center clamping hole, 105 - positioning block, 110 - adjusting assembly, 111 - rotating handle, 112 - driving bevel gear, 113 - driven bevel gear, 114 - rolling friction wheel, 2 - fine adjustment driving unit, 3 - stripping driving unit, 300 - second shell, 301 - packaging cover, 310 - stator assembly, 311 - stator annular plate, 312 - magnetic field coil, 313 - center hole, 320 - rotor assembly, 321 - rotor annular plate, 322 - permanent magnet, 330 - stripping execution assembly, 331 - component connecting plate, 332 - stripping knife driving assembly, 3321 - first sliding groove, 3322 - second sliding groove, 3323 - protection spring, 3324 - sliding rod, 3325 - connecting plate, 3326 - driving box, 3327 - stripping knife driving gear, 3328 - third sliding groove, 3329 - stripping knife, 33210 - rack part, 33211 - knife head, 333 - metal detector, 4 - prefabricated hollow pipe pile, 401 - concrete outer layer. DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0046] like Figures 1-7 As shown, in an embodiment of the present invention, the device for stripping steel bars from a prefabricated hollow pipe pile body for resisting pull-out of foundations comprises:

[0047] An adjustment and positioning unit for positioning with the outer side of the end of the precast hollow pipe pile 4 includes a pair of semicircular first shells 101 rotatably connected at one end by a rotating shaft 102, a clamping portion 103 for closing and clamping the first shells 101, a central clamping hole 104 surrounded by the first shells 101 at the center for passing the precast hollow pipe pile 4, and a positioning block 105 for directly contacting and clamping the precast hollow pipe pile 4;

[0048] A fine-tuning drive unit fixedly connected to the adjustment and positioning unit for telescopically adjusting the peeling position;

[0049] The stripping drive unit is fixedly connected to the other end of the fine-tuning drive unit, and includes a rotating assembly that drives itself to rotate, and a stripping execution assembly that is fixedly connected to the rotating part of the rotating assembly.

[0050] The stripping execution assembly 330 includes a component connecting plate 331 fixedly connected to the rotating part of the rotating assembly, and a stripping knife driving assembly 332 installed on the upper surface of the component connecting plate 331 for cutting the concrete layer.

[0051] In an embodiment of the present invention, by adopting the end sleeve installation and positioning method, the pile body reinforcement at the end of the prefabricated hollow pipe pile is stripped in a targeted manner, which not only achieves the miniaturization of the reinforcement stripping equipment to a large extent, reduces the load energy consumption, but also facilitates the operation of the construction personnel. At the same time, the present invention only strips the outer concrete layer by adopting the stripping device, and the construction personnel can complete the welding of the reinforcement surface exposed to the outside surface, thereby increasing the contact area between the extension reinforcement and the pile body reinforcement, thereby effectively improving the connection strength and avoiding the technical problem of difficulty in subsequent construction after the threaded connection section in the pile body reinforcement is completely removed. The construction personnel only need to sleeve the equipment on the end of the prefabricated hollow pipe pile, and after the positioning is completed, the pile body reinforcement at the end can be automatically stripped to achieve the technical effect of semi-exposed.

[0052] During use, first, the required prefabricated hollow pipe pile segment is retained according to the actual working condition length requirement, and then the pile body steel bar stripping device is sleeved on the outer wall of the prefabricated hollow pipe pile 4, the first shell 101 is clamped and positioned by the clamping part 103. At this time, the prefabricated hollow pipe pile is in close contact with the positioning block 105 and plays a clamping and positioning role; then, the stripping execution component 330 is started, and the stripping knife 3329 in the stripping knife driving component 332 is controlled to move forward so as to contact the surface of the prefabricated hollow pipe pile, and then the rotating component is controlled to rotate, thereby causing the stripping knife driving component 332 to rotate, thereby stripping the outer concrete layer; then, the fine-tuning driving unit 2 is controlled to extend and retract along the central axis direction of the prefabricated hollow pipe pile, so that the stripping driving unit 3 is extended and retracted, thereby realizing the stripping of the pile body segment within a certain length range of the end, thereby increasing the exposed length of the steel bar; then, the clamping part 103 is loosened, and the device is removed from the end of the prefabricated hollow pipe pile 4 to complete the pile body steel bar stripping operation.

[0053] like Figure 7 As shown, in this embodiment of the present invention, the stripping knife drive assembly 332 includes:

[0054] A shell, a second slide groove 3322 arranged inside the shell, a slide rod 3324 slidingly connected to the second slide groove 3322, a drive box 3326 fixedly connected to the top of the slide rod 3324 through a connecting plate 3325, a stripping knife 3329 slidingly connected to the third slide groove 3328 arranged inside the drive box 3326, a rack part 33210 arranged below the stripping knife 3329, a stripping knife driving gear 3327 fixedly connected to the drive box 3326 and driven by a motor and kept in meshing transmission with the rack part 33210, and a knife head 33211 arranged at the protruding end of the stripping knife 3329.

[0055] In an embodiment of the present invention, the extension control of the stripping knife is achieved by adopting a gear rack mechanism. When in use, it is only necessary to control the motor to drive the stripping knife driving gear 3327 to rotate, thereby driving the rack part 33210 under the stripping knife 3329 to engage and transmit, thereby realizing the extension movement of the stripping knife 3329.

[0056] like Figures 1-3 As shown, in the embodiment of the present invention, the adjusting and positioning unit 1 further includes:

[0057] An adjustment assembly 110 for manually fine-tuning the position after pre-positioning includes a rotating handle 111 rotatably connected to the first housing 101, a driving bevel gear 112 axially fixedly connected to the bottom of the rotating handle 111, a driven bevel gear 113 meshing with the driving bevel gear 112, and a rolling friction wheel 114 axially fixedly connected to the driven bevel gear 113 via a transmission shaft.

[0058] In the embodiment of the present application, by setting the manual rotation adjusting mechanism, the technical problem that it is difficult to control the accurate installation position at one time when the staff sets the device on the outer wall of the prefabricated hollow pipe pile is solved, thereby reducing the installation difficulty of the staff and improving the work efficiency. In use, the staff first determines the equipment installation position; then, the equipment is set on the outer wall of the prefabricated hollow pipe pile for pre-installation by the clamping portion 103; then, the rotating handle 111 is manually rotated to control the rotation of the driving bevel gear 112, thereby driving the driven bevel gear 113 to rotate, further driving the rolling friction wheel 114 to rotate, and finally realizing the fine adjustment of the up-down movement position of the device body relative to the prefabricated hollow pipe pile.

[0059] As shown in the Figure 1 embodiment of the present application, the fine adjustment driving unit 2 can be a linear motor or a lead screw transmission module.

[0060] As shown in the Figure 4 and Figure 5 embodiments of the present application, the rotating assembly comprises:

[0061] a stator assembly 310 comprising a stator annular plate 311 fixedly connected to one end of the fine adjustment driving unit 2, a magnetic field coil 312 arranged in a uniform annular array above the stator annular plate 311, and a central hole 313 arranged in the middle of the annular plate 311 for passing through the prefabricated hollow pipe pile 4;

[0062] a rotor assembly 320 comprising a rotor annular plate 321 movably mounted above the stator annular plate 311 and provided with a permanent magnet 322 on the lower surface, and the rotor annular plate 321 is fixedly connected with a component connecting plate 331.

[0063] In the embodiment of the present application, by controlling the on-off sequence of the multi-phase magnetic field coils uniformly arranged above the stator annular plate, a driving magnetic field in different directions is generated, thereby attracting the multiple permanent magnets on the lower surface of the rotor annular plate, realizing the rotation of the rotating assembly, and effectively realizing the annular rotor driving containing the central hole, which is more suitable for the cylindrical outer wall machining condition.

[0064] As shown in the Figure 7 embodiment of the present application, the peeling execution assembly 330 further comprises:

[0065] a first sliding groove 3321 arranged in the housing, a protection spring 3323 for buffering protection mounted in the first sliding groove 3321, one end of the protection spring 3323 being fixedly connected with the inner end surface of the first sliding groove 3321, and the other end being fixedly connected with a connecting plate 3325.

[0066] As shown in the Figure 6As shown, in the embodiment of the present application, the stripping execution assembly 330 further comprises:

[0067] The metal detector 333 is fixedly connected above the component connecting plate 331 and used for sensing metal.

[0068] As shown, in the embodiment of the present application, a use method of the foundation anti-pulling prefabricated hollow pipe pile body steel bar stripping device is provided, which comprises the following steps: Figure 8

[0069] S100: first, according to the actual working condition length requirement, the required prefabricated hollow pipe pile segment is reserved, then the pile body steel bar stripping device is sleeved on the outer wall of the prefabricated hollow pipe pile 4, the first shell 101 is clamped and positioned by using the clamping part 103, at this time, the prefabricated hollow pipe pile is in close contact with the positioning block 105 and plays a clamping and positioning role;

[0070] S200: start the stripping execution assembly 330, control the stripping knife 3329 in the stripping knife driving assembly 332 to move forward to contact the surface of the prefabricated hollow pipe pile, then control the rotating assembly to rotate, so that the stripping knife driving assembly 332 rotates, thereby stripping the outer concrete layer;

[0071] S300: control the fine adjustment driving unit 2 to stretch forward and backward along the central axis direction of the prefabricated hollow pipe pile, so that the stripping driving unit 3 stretches forward and backward, thereby realizing the stripping of the pile body segment within a certain length range at the end, and increasing the exposed length of the steel bar;

[0072] S400: loosen the clamping part 103, and the stripping operation of the pile body steel bar can be completed by taking down the device from the end of the prefabricated hollow pipe pile 4.

[0073] In the embodiment of the present application, the step S100 further comprises the following steps:

[0074] S101: the staff first determines the equipment installation position;

[0075] S102: the equipment is sleeved on the outer wall of the prefabricated hollow pipe pile and pre-installed by using the clamping part 103;

[0076] S103: manually rotate the rotating handle 111, control the driving bevel gear 112 to rotate, thereby driving the driven bevel gear 113 to rotate, further driving the rolling friction wheel 114 to rotate, and finally realizing the fine adjustment of the moving position of the device body relative to the prefabricated hollow pipe pile.

[0077] Those skilled in the art can easily understand that the above description is only a preferred embodiment of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.​

Claims

1. A base anti-pulling prefabricated hollow pipe pile body steel bar stripping device, characterized in that, The utility model relates to a kind of foundation anti-pulling hollow precast pile, which comprises: An adjusting positioning unit for positioning the outer side of the end of the hollow precast pile (4) includes a pair of semicircular first housings (101) rotatably connected at one end by a rotating shaft (102), a clamping portion (103) for closing and clamping the first housings (101), a central clamping hole (104) formed by the first housings (101) for passing through the hollow precast pile (4), and a positioning block (105) for directly contacting and clamping the hollow precast pile (4); A fine adjustment driving unit connected to the adjusting positioning unit for adjusting the stripping position in an extendable manner; A stripping driving unit connected to the other end of the fine adjustment driving unit, which includes a rotating assembly for driving rotation, and a stripping execution assembly (330) fixedly connected to the rotating part of the rotating assembly, The stripping execution assembly (330) includes a component connecting plate (331) fixedly connected to the rotating part of the rotating assembly, and a stripping cutter driving assembly (332) installed on the upper surface of the component connecting plate (331) for cutting the concrete layer; The stripping cutter driving assembly (332) includes a housing, a second sliding groove (3322) arranged inside the housing, a sliding rod (3324) slidingly connected to the second sliding groove (3322), a driving box (3326) fixedly connected to the sliding rod (3324) through a connecting plate (3325), a stripping cutter (3329) slidingly connected to a third sliding groove (3328) arranged inside the driving box (3326), a rack portion (33210) arranged below the stripping cutter (3329), a stripping cutter driving gear (3327) fixedly connected to the driving box (3326) and driven by an electric motor while being in engagement with the rack portion (33210), and a cutter head (33211) arranged at the extending end of the stripping cutter (3329).

2. The device according to claim 1, characterized in that, The adjusting positioning unit (1) further includes: An adjusting assembly (110) for manually adjusting the position after pre-positioning, which includes a rotating handle (111) rotatably connected to the first housing (101), a driving bevel gear (112) axially fixedly connected below the rotating handle (111), a driven bevel gear (113) in engagement with the driving bevel gear (112), and a rolling friction wheel (114) axially fixedly connected to the driven bevel gear (113) through a transmission shaft.

3. The foundation anti-pulling hollow precast pile according to any one of claims 1-2, characterized in that: The fine adjustment driving unit (2) is a linear motor or a lead screw transmission module.

4. The device according to claim 3, characterized in that, The rotating assembly includes: A stator assembly (310) including a stator ring plate (311) fixedly connected to one end of the fine adjustment driving unit (2), a plurality of magnetic field coils (312) arranged in a uniform annular array above the stator ring plate (311), and a central hole (313) arranged in the middle of the ring plate (311) for passing through the hollow precast pile (4). The rotor assembly (320) comprises a rotor annular plate (321) movably mounted above the stator annular plate (311) and provided with a permanent magnet (322) on the lower surface, and the rotor annular plate (321) is fixedly connected with the component connecting plate (331).

5. The device according to claim 4, characterized in that, The stripping execution assembly (330) further comprises: The first sliding groove (3321) is arranged in the shell, the protection spring (3323) for buffering protection is arranged in the first sliding groove (3321), one end of the protection spring (3323) is fixedly connected with the inner end surface of the first sliding groove (3321), and the other end is fixedly connected with the connecting plate (3325).

6. A device for stripping steel bars from a prefabricated hollow pipe pile according to any one of claims 4 or 5, characterized in that: The stripping execution assembly (330) further comprises: The metal detector (333) for sensing metal is fixedly connected above the component connecting plate (331).

7. The use of a device for stripping the reinforcement of a foundation uplift precast hollow pipe pile according to any one of claims 1 to 6, characterized in that, The method comprises the following steps: S100: first, according to the actual working condition length requirement, the required precast hollow pipe pile segment is reserved, then the pile body steel stripping device is sleeved on the outer wall of the precast hollow pipe pile (4), the first shell (101) is clamped and positioned by using the clamping part (103), at this time, the precast hollow pipe pile is in close contact with the positioning block (105) and plays a clamping and positioning role; S200: start the stripping execution assembly (330), control the stripping knife (3329) in the stripping knife driving assembly (332) to move forward to contact the surface of the precast hollow pipe pile, then control the rotating assembly to rotate, and then make the stripping knife driving assembly (332) rotate, so as to strip the outer concrete layer; S300: control the fine adjustment driving unit (2) to stretch forward and backward along the central axis direction of the precast hollow pipe pile, so that the stripping driving unit (3) stretches forward and backward, so as to strip the pile body segment within a certain length range at the end, and increase the exposed length of the steel bar; S400: loosen the clamping part (103), take off the device from the end of the precast hollow pipe pile (4), and the stripping operation of the pile body steel bar can be completed.

8. The method of using a base anti-pulling precast hollow pipe pile body reinforcing stripping device according to claim 7, characterized in that, The step S100 further comprises the following steps: S101: the staff first determines the equipment installation position; S102: the equipment is sleeved on the outer wall of the precast hollow pipe pile and pre-installed by using the clamping part (103); S103: manually rotate the rotating handle (111), control the driving bevel gear (112) to rotate, drive the driven bevel gear (113) to rotate, and then drive the rolling friction wheel (114) to rotate, and finally realize the fine adjustment of the up-down moving position of the device body relative to the precast hollow pipe pile.

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