Local plugging type pore-forming cast-in-place pile
By using technical means of using locally sealed hole-formed cast piles during the pouring process of cast piles, the problem of concrete extending deep into the pipeline and mixing soil with concrete is solved, and efficient use of concrete and improved stability of pile body is achieved.
Patent Information
- Application Number
- CN202510141285.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2025-03-25
AI Technical Summary
During the pouring process of casting piles, the pipes at both ends of the foundation pit are not effectively sealed, resulting in concrete being extended deep into the pipeline, resulting in waste of concrete. The existing sealing method will cause the soil on the inner wall of the foundation pit to mix with concrete, affecting the quality of concrete.
The partially sealed hole-formed pile is adopted. By setting up an expanded arc plate and an oblique top rod, the drive mechanism is used to move the disc body upward, and the collar and oblique top rod are pushed upward, so that the expansion arc plate is close to the inner wall of the foundation pit, preventing soil and concrete from mixing, and restricting the flip of the anti-seepage plate through the ejection mechanism to prevent concrete from overflowing.
Effectively prevent concrete from extending deep into the pipeline, reduce concrete waste, and ensure that the soil on the inner wall of the foundation pit does not mix with concrete, and improve the overall support and compressive resistance of the pile body.
Smart Images
Figure CN119686298A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of cast-in-place piles, in particular to a local plugging type hole-forming cast-in-place pile. Background Art
[0002] Cast-in-place piles are made by directly drilling holes at the designed pile positions. Their cross-section is circular. After the holes are formed, steel cages are placed in the holes and concrete is poured in. They are used in urban construction. Cast-in-place piles can be divided into bored cast-in-place piles, sunk pipe cast-in-place piles, manually excavated cast-in-place piles, explosive expansion cast-in-place piles, etc. according to their different hole-forming methods.
[0003] During the pouring process of bored piles, it is necessary to drill holes in the ground in advance, and the pre-buried pipes in the soil are sometimes located below the drilled holes. Therefore, the drilled holes form foundation pits, which divide the penetrating pipes into two halves, and the pipes at both ends are connected to the foundation pits. At this time, if concrete is poured into the foundation pit, the two damaged pipes in the foundation pit will not be blocked, which will cause the concrete to extend deep into the pipes, thereby causing a waste of concrete. In the existing blocking method, for the pipes in the middle of the foundation pit, the connection between the pipe and the foundation pit is at a certain distance from the bottom of the foundation pit. At this time, a crane is used to attach a baffle to the connection between the pipe and the foundation pit. Because the baffle is heavy, the baffle will rub against the soil on the inner wall of the foundation pit due to shaking, causing the soil on the inner wall of the foundation pit to mix with the concrete, thereby affecting the quality of the concrete. Summary of the invention
[0004] The object of the present invention is to provide a partially blocked bored pile to solve the problems mentioned in the above background technology.
[0005] To achieve the above object, the present invention provides a partially blocked bored pile, comprising a pile hole and two truncated square pipes, a driving mechanism for driving a disc to move upward is provided at the top of the pile hole, and anti-seepage plates rotatably connected to pull rods are provided at symmetrical ends of the disc, the pull rods are hung on the outer ring of the disc, and the disc is symmetrically slidably connected to an auxiliary part, the auxiliary part comprises a first vertical rod, a horizontal plate and a second vertical rod, and the two ends of the first vertical rod are respectively fixedly connected to the second vertical rod and the horizontal plate; The second vertical pole is provided with an expansion mechanism, which includes an expansion arc plate and an inclined push rod. The inclined push rod rotatably connected to the expansion arc plate is rotatably connected to a sleeve sleeved on the second vertical pole. The sleeve contacts the upwardly moving disk and pushes the inclined push rod obliquely upward, so that the expansion arc plate expands outward and abuts against the inner wall of the pit body. During the ejection process, the inclined ejector rod pushes the ejection mechanism to slide at the bottom of the horizontal plate, and the ejection mechanism abuts against the upper end of the anti-seepage plate to limit excessive turning of the anti-seepage plate, and the anti-seepage plate presents a state in which the top is tilted inwards.
[0006] As a further improvement of the present technical solution, the driving mechanism includes a driving motor, an active bevel gear and a driven bevel gear. The driving motor can be fixed to the mobile frame by bolts, and the active bevel gear coaxially connected to the output shaft of the driving motor meshes with the driven bevel gear next to it. The nut arranged on the upper surface of the driven bevel gear is connected to the ball screw through a thread. The bracket sleeved on the outer ring of the ball screw is rotatably connected to the ball screw, and the auxiliary legs fixedly connected at both ends of the bracket are fixed to the ground through an insertion rod, and the active bevel gear is rotatably connected to the bracket.
[0007] As a further improvement of the technical solution, a limiting groove is provided in the second vertical rod, and the limiting groove abuts against a limiting block arranged on the inner wall of the collar, so that when the limiting disk pushes the collar upward, the collar rotates.
[0008] As a further improvement of the technical solution, the inner curved surface of the expansion arc plate is provided with a telescopic rod slidably connected to the second vertical pole, and the telescopic rod is divided into an inner tube and an outer tube, wherein one end of the inner tube is fixedly connected to the expansion arc plate, and the other end is sleeved inside the telescopic rod, the outer tube is away from the expansion arc plate, and one end of the inner curved surface is sleeved on the second vertical pole.
[0009] As a further improvement of the technical solution, one end of the inclined ejector rod away from the sleeve ring is rotatably connected to an auxiliary ring fixed on the inner cylinder, and ejector rods are extended outwardly on both sides of the middle of the inclined ejector rod.
[0010] As a further improvement of the present technical solution, the ejection mechanism is composed of a vertical rod and a horizontal ejector rod. The bottom end of the vertical rod is fixedly connected to the horizontal ejector rod. The vertical rod and the horizontal ejector rod are perpendicular. A block is provided on the top of the vertical rod and is penetrated by an auxiliary rod arranged inside the cross plate. The auxiliary rod is slidably connected to the block. A third spring mounted on the auxiliary rod is against the block, so that the vertical rods on both sides are fitted with the ejector rod.
[0011] As a further improvement of the technical solution, a blocking rod is fixedly connected between the sliding blocks slidably connected on the vertical poles on both sides, and a first spring sleeved on the vertical pole abuts against the blocking rod, and the blocking rod is kept in contact with the telescopic rod under the action of the first spring.
[0012] As a further improvement of the technical solution, a second vertical pole between the disk body and the horizontal plate is sleeved with multiple sections of second springs. The disk body at the lowest end can maintain an elastic connection between the ring and the disk body, and the disk body at the topmost end forms resistance to the telescopic rod. When the telescopic rod moves upward, the elastic force of the second spring pushes the expansion arc plate outward, so that the expansion arc plate is against the inner wall of the pit body.
[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the local plugging type bored pile, the expansion arc plate and the inclined push rod are provided. Under the action of the driving mechanism, the disc moves upward and the sleeve ring is pushed upward by the second spring. At the same time, the inclined push rod is pushed upward obliquely, so that the expansion arc plate expands toward the inner wall of the foundation pit. The expansion arc plate is in close contact with the inner wall of the foundation pit, which keeps the stability of the ball screw and compacts the inner wall of the foundation pit to prevent the loose soil from mixing with the concrete and affecting the overall support of the pile body.
[0014] 2. In the local plugging type bored cast-in-place pile, when the inclined push rod pushes the expansion arc plate outward, the push rod extending from the middle of the inclined push rod contacts the vertical upright rod, thereby pushing the vertical upright rod and the horizontal push rod to move toward the anti-seepage plate, so that the horizontal push rod extends into the inner wall of the square pipe and restricts the top of the overturned anti-seepage plate, preventing the bottom of the anti-seepage plate from continuing to overturn under the push of concrete, thereby causing concrete overflow and affecting the plugging of the square pipe.
[0015] 3. In the partially blocked bored pile, the concrete in the square pipe presents a semi-trapezoidal shape under the action of the pull rod, and the semi-trapezoidal concrete on both sides is connected to the main body of the pile, which can improve the support of the main body of the pile and enable the pile to withstand greater pressure. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the driving mechanism, the expansion mechanism and the ejection mechanism of the present invention; Figure 3 It is a schematic diagram of the driving mechanism structure of the present invention; Figure 4 It is a schematic diagram of the explosion structure of the square pipe, anti-seepage plate, tie rod, expansion mechanism and ejection mechanism of the present invention; Figure 5 It is a schematic diagram of the explosion structure of the pull rod, anti-seepage plate and ball screw of the present invention; Figure 6 It is a schematic diagram of the anti-seepage plate flipping structure of the present invention; Figure 7 It is a schematic diagram of the expansion mechanism and ejection mechanism structure of the present invention; Figure 8 It is a left view of the expansion mechanism and ejection mechanism structure of the present invention.
[0017] The meaning of each number in the figure is: 100, pile hole; 101, square pipe; 102, first vertical pole; 103, auxiliary support foot; 104, horizontal plate; 105, second vertical pole; 106, stop rod; 107, auxiliary rod; 108, third spring; 200, driving mechanism; 201, driving motor; 202, driving bevel gear; 203, driven bevel gear; 204, ball screw; 205, disc; 300, expansion mechanism; 301, expansion arc plate; 302, inclined ejector rod; 303, telescopic rod; 304, sleeve ring; 305, second spring; 400, ejection mechanism; 401, vertical rod; 402, horizontal ejector rod; 403, first spring; 500. Anti-seepage plate; 501. Pull rod. DETAILED DESCRIPTION
[0018] During the pouring process of bored piles, it is necessary to drill holes in the ground in advance, and the pre-buried pipes in the soil are sometimes located below the drilled holes. Therefore, the drilled holes form foundation pits, which divide the penetrating pipes into two halves, and the pipes at both ends are connected to the foundation pits. At this time, if concrete is poured into the foundation pit, the two damaged pipes in the foundation pit will not be blocked, which will cause the concrete to extend deep into the pipes, thereby causing a waste of concrete. In the existing blocking method, for the pipes in the middle of the foundation pit, the connection between the pipe and the foundation pit is at a certain distance from the bottom of the foundation pit. At this time, a crane is used to attach a baffle to the connection between the pipe and the foundation pit. Because the baffle is heavy, the baffle will rub against the soil on the inner wall of the foundation pit due to shaking, causing the soil on the inner wall of the foundation pit to mix with the concrete, thereby affecting the quality of the concrete.
[0019] Most steel cages are welded by metal fixing frames and steel bars, and then the steel cage is placed in the soil with a hole for pouring. At this time, since there will be pre-buried pipelines parallel to the ground at the bottom of the pile hole, the pipeline can be passed through the steel cage by adjusting the position of the annular fixing frame. When concrete is injected into the pile, the pipeline is easily bent by the accumulation of concrete, causing its two ends to slightly rise and the middle to sag downward, forming a gap between the surrounding of the pipeline and the concrete, which in turn leads to the overall stability and bearing capacity of the pile body failing to meet the standards after the concrete solidifies. Example
[0020] like Figure 1 and Figure 2 As shown, a partially blocked bored pile is provided, comprising a pile hole 100 and cut-off square pipes 101 on both sides, wherein the square pipe 101 is drilled by a drilling machine, and the square pipe 101 pre-buried in the soil is cut off, so that the square pipe 101 is divided into two parts, and the two parts of the square pipes 101 are both connected to the pile hole 100, so that when pouring concrete into the pile hole 100 later, the square pipes 101 on both sides need to be blocked to prevent the concrete from flowing deep into the square pipe 101, resulting in waste of concrete.
[0021] Cooperate Figure 4 As shown, before pouring concrete, the expansion mechanism 300 is assembled and connected to the disc 205, and then the driving mechanism 200 is fixed to the ground through the insertion rod. Secondly, after the preliminary work is ready, the person enters the square pipe 101 through the hanging ladder. At this time, the pre-set anti-seepage plate 500 with the same aperture size as the inner wall of the square pipe 101 is placed in the square pipe 101. Due to the rotation of both sides, the other end of the pull rod 501 connecting the anti-seepage plate 500 is provided with a hook such as Figure 5 As shown, the pull rod 501 can be hung on the outer ring of the disc body 205, so that the disc body 205, the pull rod 501 and the anti-seepage plate 500 are connected together.
[0022] Next, concrete is poured to the bottom of the pile hole 100 through the pipe until the concrete is flush with the bottom wall of the square pipe 101, and the pouring speed is slowed down. As the pouring of concrete increases, when the concrete overflows the bottom wall of the square pipe 101, the ball screw 204 and the disk 205 are moved upward by the driving mechanism 200, and the pull rod 501 is pulled obliquely upward to prevent the concrete from overflowing the disk 205 and covering the disk 205.
[0023] Therefore, based on the above structure, Figure 3 The specific structure of the driving mechanism 200 is further disclosed. The driving mechanism 200 includes a driving motor 201, an active bevel gear 202 and a driven bevel gear 203. The driving motor 201 is fixed to the mobile frame by bolts, and the active bevel gear 202 coaxially connected to the output shaft of the driving motor 201 meshes with the driven bevel gear 203 on the side. The nut arranged on the upper surface of the driven bevel gear 203 is connected with the ball screw 204 through a thread, and the auxiliary legs 103 fixedly connected at both ends of the bracket are fixed to the ground by a rod. By starting The driving motor 201 makes the active bevel gear 202 and the active bevel gear 203 rotate in sequence, and the bracket on the outer ring of the ball screw 204 is rotatably connected to the ball screw 204, and the active bevel gear 202 is rotatably connected to the bracket. The purpose is that when the driven bevel gear 203 rotates, the driven bevel gear 203 lifts the ball screw 204 upward, and the bracket can keep the ball screw 204 stable, preventing the ball screw 204 from shaking in the pile hole 100, so that the disc 205 coaxially connected at the bottom of the ball screw 204 can move upward smoothly to cooperate Figure 4 Shown.
[0024] It should be additionally explained here that: with the ball screw 204 as the symmetry center, steel pipes can be inserted on both sides of the ball screw 204 to penetrate the disc 205, so that the disc 205 can more stably drive the pull rod 501 to move upward.
[0025] Return to Figure 5In the process of the ball screw 204 driving the disc 205 to move upward, the disc 205 drives the pull rod 501 upward to move, so that the two ends of the pull rod 501 rotate with the anti-seepage plate 500 and the disc 205 respectively. At this time, as the thickness of the concrete increases, the concrete pushes the bottom end of the anti-seepage plate 500 outward, causing the bottom end of the anti-seepage plate 500 to tilt outward. At the same time, the top end of the anti-seepage plate 500 tilts toward the inside of the pile hole 100, thereby causing the concrete to overflow.
[0026] In order to prevent the anti-seepage plate 500 from tilting excessively, an expansion mechanism 300 and an ejection mechanism 400 are symmetrically arranged on both sides of the ball screw 204. The expansion mechanism 300 squeezes the ejection mechanism 400 to eject the ejection mechanism 400 outward, thereby restricting the upper end of the flipped anti-seepage plate 500. Figure 7 The specific structure of the expansion mechanism 300 is disclosed. The expansion mechanism 300 includes an expansion arc plate 301 and an inclined ejector rod 302. The inclined ejector rod 302 rotatably connected to the expansion arc plate 301 is rotatably connected to a ring 304 sleeved on the second vertical pole 105. A limiting groove is provided in the second vertical pole 105. The limiting groove is abutted against a limiting block arranged on the inner wall of the ring 304 to prevent the ring 304 from rotating with the second vertical pole 105 during movement, thereby affecting the ejection of the expansion arc plate 301.
[0027] Cooperate Figure 4 As shown, during the upward movement of the disk body 205, since the second vertical rod 105 is slidably connected to the disk body 205, the second vertical rod 105 and the first vertical rod 102 are respectively fixedly connected to the two ends of the cross plate 104, and the first vertical rod 102 is located above the cross plate 104, the second vertical rod 105 is located below the cross plate 104, and the first vertical rod 102 is fixedly connected to the bracket. In this way, the upwardly moving disk body 205 will first contact the second spring 305 sleeved on the bottom of the second vertical rod 105, and the disk body 205 pushes the ring 304 upward by pushing the second spring 305, and the inclined ejector rod 302 that is extruded obliquely upward pushes the ejection mechanism 400 that is slidably connected to the cross plate 104 outward, so that the ejection mechanism 400 restricts the upper end of the inwardly inclined anti-seepage plate 500, thereby preventing the anti-seepage plate 500 from over-turning.
[0028] As described above, the ejection mechanism 400 restricts the turning of the anti-seepage plate 500. Figure 7 On the basis of Figure 8The specific structure of the ejection mechanism 400 is further disclosed. The ejection mechanism 400 is composed of a vertical rod 401 and a horizontal ejector rod 402. The bottom end of the vertical rod 401 is fixedly connected to the horizontal ejector rod 402. The vertical rod 401 and the horizontal ejector rod 402 are perpendicular, and a block provided on the top of the vertical rod 401 is slidably connected to the cross plate 104. Ejectors are extended outward on both sides of the middle of the inclined ejector rod 302. The inclined ejector rod 302 is ejected outward so that the extended ejector rods are against the vertical rods 401 on both sides, thereby pushing the vertical rod 401 and the horizontal ejector rod 402 to move toward the anti-seepage plate 500. When the horizontal ejector rod 402 just contacts the edge of the square pipe 101, the horizontal ejector rod 402 and the upper top of the anti-seepage plate 500 contact the anti-seepage plate 500 (the state at this time is determined by Figure 6 ), thereby limiting the overturning of the anti-seepage plate 500, thereby preventing concrete from overflowing from the bottom end of the anti-seepage plate 500.
[0029] It should be added here that: in order to enhance the bending resistance of the vertical poles 401 on both sides, a blocking rod 106 is fixedly connected between the sliders slidably connected on the vertical poles 401 on both sides, and the first spring 403 sleeved on the vertical pole 401 is against the blocking rod 106. Under the action of the first spring 403, the blocking rod 106 is kept in contact with the telescopic rod 303. The sliders and blocking rod 106 on both sides connect the vertical poles 401 together, thereby ensuring the bending resistance of the vertical poles 401 on both sides.
[0030] At the same time, the upper and lower ends of the anti-seepage plate 500 in this state are in contact with the inner wall of the square pipe 101. As the thickness of the concrete increases, the solidified concrete in the square pipe 101 is formed in the left view direction. Figure 8 From the projected direction, two semi-trapezoidal concrete blocking blocks are formed in the square pipes 101 on both sides of the pile hole 100, and the semi-trapezoidal concrete blocking blocks can increase the supporting area of the main body of the pile hole 100, so that the pile hole 100 can withstand greater pressure and improve the compressive resistance of the pile hole 100.
[0031] In the process of the inclined ejector rod 302 being ejected outward, the inclined ejector rod 302 will also push the expansion arc plate 301 outward, because the inner arc surface of the expansion arc plate 301 is provided with a telescopic rod 303 slidably connected to the second vertical rod 105, and the telescopic rod 303 is divided into an inner tube and an outer tube, wherein one end of the inner tube is fixedly connected to the expansion arc plate 301, and the other end is sleeved inside the telescopic rod 303. Therefore, under the elastic action of the second spring 305 at the bottom of one end of the telescopic rod 303 slidably connected to the second vertical rod 105, the telescopic rod 303 is pushed upward, and at the same time, the inclined ejector rod 302 is away from the collar 3 One end of 04 is rotatably connected to the auxiliary ring, and the auxiliary ring is fixedly connected to the inner tube, and the inner tube is fixedly connected to the inner curved surface of the expansion arc plate 301, so that the expansion arc plate 301 is pushed out by the inclined push rod 302, and the expansion arc plate 301 fits with the inner wall of the foundation pit. At this time, the expansion arc plate 301 expands outward to form support with the soil, so that the stability of the disk body 205 is maintained under the action of the two expansion arc plates 301. At the same time, the loose soil on the inner wall of the foundation pit can also become firm under the squeezing of the expansion arc plate 301 to prevent the loose soil from falling and mixing with the concrete, thereby affecting the support of the pile body.
[0032] Return to Figure 8 In order to make the vertical pole 401 and the top pole extending from the middle of the inclined top pole 302 fit closely, an auxiliary rod 107 arranged inside the horizontal plate 104 passes through the block, the auxiliary rod 107 is slidably connected to the block, and the third spring 108 sleeved on the auxiliary rod 107 is against the block, so that the vertical pole 401 can be kept in close contact with the top pole.
[0033] When the concrete just covers the top of the inner wall of the square pipe 101, the disc 205 is now higher than the concrete level, and the steel pipe is detached from the disc 205. At this time, the disc 205 moves downward. When disassembling the device, the rod of the fixed bracket is pulled out, and the bracket is pulled upward to release the elastic force in the multi-section second spring 305, so that the expansion arc plate 301 is separated from the inner wall of the foundation pit soil, and the horizontal top rod 402 is pushed to separate it from the covering layer of concrete.
[0034] Finally, the anti-seepage plate 500 is left in the concrete, the hook of the pull rod 501 is exposed, and the hook is connected with the surrounding steel bars to be added using steel bars. After the device is taken out, concrete is injected into the pile hole 100.
[0035] In summary, the working principle of the present invention is as follows: by placing the anti-seepage plate 500 in the inner wall of the square pipe 101, the pull rods 501 on both sides are connected to the disc 205. As the pouring of concrete increases, when the concrete contacts the bottom end of the anti-seepage plate 500, the ball screw 204 and the disc 205 are lifted upward by the driving mechanism 200, so that the disc 205 pushes the ring 304 to push the inclined push rod 302 upward obliquely, and the telescopic rod 303 extends outward, and the expansion arc plate 301 is tightly attached to the soil on the inner wall of the foundation pit, and the expansion arc plate 301 compacts the soil to prevent the soil from mixing with the concrete and affecting the quality of the pile.
[0036] At the same time, in the process of the inclined push rod 302 being pushed outward, the push rod pushes the vertical pole 401 and the horizontal push rod 402 to move toward the square pipe 101, so that the horizontal push rod 402 is against the upper end of the flipped anti-seepage plate 500, thereby limiting the flipping of the anti-seepage plate 500 and preventing concrete from overflowing from the bottom of the anti-seepage plate 500. At this time, the anti-seepage plate 500 blocks the inner wall of the square pipe 101, and after the concrete in the square pipe 101 solidifies, a semi-trapezoidal concrete blocking block is formed, so as to improve the support for the entire pile body and enable the pile body to withstand greater pressure.
[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. A partially blocked bored pile, comprising a pile hole (100) and two truncated square pipes (101) on both sides, wherein a driving mechanism (200) for driving a disk (205) to move upward is provided at the top of the pile hole (100), characterized in that: The disk body (205) is symmetrically provided with anti-seepage plates (500) rotatably connected to pull rods (501) at both ends, the pull rods (501) are hung on the outer ring of the disk body (205), and the disk body (205) is symmetrically slidably connected to the auxiliary part, the auxiliary part comprises a first vertical rod (102), a horizontal plate (104) and a second vertical rod (105), and the two ends of the first vertical rod (102) are respectively fixedly connected to the second vertical rod (105) and the horizontal plate (104); The second vertical pole (105) is provided with an expansion mechanism (300), the expansion mechanism (300) comprising an expansion arc plate (301) and an inclined push rod (302), the inclined push rod (302) rotatably connected to the expansion arc plate (301) is rotatably connected to a collar (304) sleeved on the second vertical pole (105), the collar (304) contacts the upwardly moving disk (205) and pushes the inclined push rod (302) obliquely upward, so that the expansion arc plate (301) expands outwards and abuts against the inner wall of the pit body; During the ejection process, the inclined ejector rod (302) pushes the ejection mechanism (400) to slide on the bottom of the horizontal plate (104), and the ejection mechanism (400) abuts against the upper end of the anti-seepage plate (500), thereby limiting excessive turning of the anti-seepage plate (500), and the anti-seepage plate (500) presents a state in which the top is tilted inwards.
2. The partially blocked bored pile according to claim 1 is characterized in that: The driving mechanism (200) comprises a driving motor (201), a driving bevel gear (202) and a driven bevel gear (203); the driving motor (201) can be fixed to the moving frame by bolts, and the driving bevel gear (202) coaxially connected to the output shaft of the driving motor (201) meshes with the driven bevel gear (203) on the side; a nut arranged on the upper surface of the driven bevel gear (203) is connected to the ball screw (204) through a thread; a bracket sleeved on the outer ring of the ball screw (204) is rotatably connected to the ball screw (204); and auxiliary legs (103) fixedly connected at both ends of the bracket are fixed to the ground by an insertion rod; the driving bevel gear (202) is rotatably connected to the bracket.
3. The partially blocked bored pile according to claim 1, characterized in that: A limiting groove is provided in the second upright rod (105), and the limiting groove abuts against a limiting block provided on the inner wall of the collar (304), so that when the limiting disk (205) pushes the collar (304) to move upward, the collar (304) rotates.
4. The partially blocked bored pile according to claim 1, characterized in that: The inner curved surface of the expansion arc plate (301) is provided with a telescopic rod (303) slidably connected to the second vertical rod (105), and the telescopic rod (303) is divided into an inner tube and an outer tube, wherein one end of the inner tube is fixedly connected to the expansion arc plate (301), and the other end is sleeved inside the telescopic rod (303), and one end of the outer tube away from the inner curved surface of the expansion arc plate (301) is sleeved on the second vertical rod (105).
5. The partially blocked bored pile according to claim 1 is characterized in that: One end of the inclined ejector rod (302) away from the sleeve ring (304) is rotatably connected to an auxiliary ring fixed on the inner cylinder, and ejector rods are extended outwards on both sides of the middle of the inclined ejector rod (302).
6. The partially blocked bored pile according to claim 1, characterized in that: The ejection mechanism (400) is composed of a vertical rod (401) and a horizontal ejector rod (402). The bottom end of the vertical rod (401) is fixedly connected to the horizontal ejector rod (402). The vertical rod (401) and the horizontal ejector rod (402) are perpendicular to each other. A clamping block provided at the top of the vertical rod (401) is penetrated by an auxiliary rod (107) provided inside the horizontal plate (104). The auxiliary rod (107) is slidably connected to the clamping block. A third spring (108) sleeved on the auxiliary rod (107) abuts against the clamping block, so that the vertical rods (401) on both sides are in contact with the ejector rods.
7. The partially blocked bored pile according to claim 6 is characterized in that: The blocking rod (106) is fixedly connected between the sliding blocks slidably connected on the vertical poles (401) on both sides, and the first spring (403) sleeved on the vertical pole (401) abuts against the blocking rod (106). Under the action of the first spring (403), the blocking rod (106) and the telescopic rod (303) are kept in contact.
8. The partially blocked bored pile according to claim 1, characterized in that: A second vertical rod (105) between the disk (205) and the horizontal plate (104) is sleeved with a plurality of second springs (305). The disk (205) at the lowest end can maintain an elastic connection between the collar (304) and the disk (205). The disk (205) at the topmost end forms a resistance to the telescopic rod (303). When the telescopic rod (303) moves upward, the elastic force of the second spring (305) pushes the expansion arc plate (301) outward, so that the expansion arc plate (301) is pressed against the inner wall of the pit.