Prefabricated pipe joint soil-squeezing hole-forming rapid pile-forming mechanism and method

Abstract

The invention discloses a prefabricated pipe joint soil-squeezing hole-forming rapid pile-forming mechanism and method, and relates to the technical field of foundation treatment engineering.The prefabricated pipe joint soil-squeezing hole-forming rapid pile-forming mechanism comprises a hollow square column and further comprises a square cone, the end face of the square cone is fixedly connected to the lower end of the square column, and a plurality of through holes communicating with the interior of the square column are formed in the oblique cone face of the square cone; the rotating column is rotationally connected to the square cone, and the rotating stroke of the rotating column relative to the square cone is provided with shielding stations enabling the blocking discs to shield the through holes in a one-to-one correspondence mode; in the downward pressing process of the square column, the square conical pile tip can be more easily cut into foundation soil, the sharp shape of the square conical pile tip can reduce the resistance of the pile tip when the pile tip enters the soil, the shape of the pile tip is beneficial for guaranteeing that the pile body vertically enters the soil, and meanwhile the pile body can be guided to be downwards pressed in the correct direction; in addition, some redundant soil can enter the square column along the through holes of the square cone while the square column puns the surrounding soil through the through holes of the square cone, so that the downward pressing resistance of the square cone is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of foundation treatment engineering, and in particular to a prefabricated pipe segment soil squeezing hole forming rapid pile forming mechanism and method. Background Art

[0002] With the development of economy and society, and the continuous improvement of engineering construction, more and more super projects are appearing in various regions. As super projects bring more and more high and steep slopes, the danger of high and steep slopes is self-evident. If landslides and other disasters occur, it will cause great loss of life and property. Therefore, more and more slope prevention and control technologies are proposed and applied, and anti-slide piles are inevitably involved in the prevention and control of high and steep slopes with major hidden dangers.

[0003] However, the most commonly used method for drilling anti-slip piles is manual drilling, which is dangerous for workers, slow, inefficient and costly. There is also a method of drilling a round hole with a rotary drill and then trimming the square hole. This method has many procedures, complex construction, average drilling speed and high construction cost. Therefore, a prefabricated pipe segment soil extrusion and drilling rapid pile formation mechanism and method are needed to optimize the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a prefabricated pipe segment soil squeezing hole rapid pile forming mechanism and method, so as to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a prefabricated pipe segment soil squeezing hole rapid pile forming mechanism, including a hollow square column, and also including: a square cone, whose end face is fixedly connected to the lower end of the square column, and whose inclined cone surface is provided with a plurality of through holes connected to the interior of the square column; a rotating column, which is rotatably connected to the square cone, and a plurality of baffles are fixedly connected to the rotating column, and the rotating column has a blocking station in which each of the baffles blocks each of the through holes one by one in the rotation stroke of the rotating column relative to the square cone; a driving assembly, which is used to drive the rotating column to rotate.

[0006] Furthermore, the driving assembly includes a driving motor, a housing of the driving motor is fixedly connected to the inner wall of the square column, and an output shaft of the driving motor is coaxially fixedly connected to the rotating column.

[0007] Furthermore, the driving assembly includes: a connecting sleeve, which is coaxially fixedly connected to the rotating column and has a spiral groove on its inner wall; a sliding rod, which is slidably connected in the square column and has a sliding block fixedly connected thereon that slidably cooperates with the spiral groove.

[0008] Furthermore, a pressure plate is slidably connected to the square column.

[0009] Furthermore, a side surface of each baffle is fixedly connected with an annular cutting knife.

[0010] Furthermore, a plurality of pull rings capable of being wound and connected with the steel cables of the crane are fixedly connected to the square column.

[0011] A construction method: S1, on a flat site, using a total station or GPS to measure and lay out the pile position of the square pile, using white lime to spread out the four side lines of the pile hole, and measuring the pile hole elevation and marking it while laying out; S2, using a crane to erect the square column on the marked pile position to be pressed; S3, using a pile driver to drive the square column downward, before the square column is pressed downward, a driving component drives a baffle away from a blocking position until the through hole of the square cone is unblocked, and during the pressing process, a portion of soil will be squeezed into the square column along the through hole; S4, when the square column is pressed down to the depth required for pile pressing, the pressure system stops pressing the square column downward, and then the driving component drives each baffle to move to the blocking position, and then the crane is used to pull the square column up and out of the pile hole.

[0012] In the above technical scheme, the present invention provides a prefabricated pipe segment soil squeezing and hole-forming rapid pile-forming mechanism and method, which first uses a crane to erect a square column on the ground, and then drives the baffles to move through a driving assembly so that the baffles are away from the blocking position until the baffles are not blocking the through holes of the square cone, and then presses down the square column through a pile driver. During the pressing process of the square column, the soil around the square column will be compacted, and some soil will enter the square column through the through holes of the square cone. After the square column descends to the required pile hole depth, the pressing down of the square column is stopped, and the baffles are restored to the blocking position by the driving assembly, and then the square column is pulled up by a crane.

[0013] During the downward pressing process of the square column, the square cone-shaped pile tip can cut into the foundation soil more easily, and its sharp shape can reduce the resistance of the pile tip when entering the soil. The shape of the pile tip helps to ensure that the pile body enters the soil vertically, and at the same time can guide the pile body to press down in the correct direction; in addition, through the through holes of the square cone, while the square column is compacting the surrounding soil, some excess soil can enter the square column through the through holes of the square cone, thereby reducing the downward pressing resistance of the square cone. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0015] Figure 1 A schematic diagram of the overall structure of a square pile provided by an embodiment of the present invention; Figure 2 A schematic diagram of the front structure of a downward-pressed square pile provided in an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a square pile after being pressed down provided by an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a baffle and a cutting knife provided in an embodiment of the present invention; Figure 5 A schematic diagram of the internal structure of a square pile provided by an embodiment of the present invention; Figure 6 A top view of a baffle provided in an embodiment of the present invention in a shielding position; Figure 7 A top view of a baffle provided in an embodiment of the present invention away from a shielding station.

[0016] Description of reference numerals: 1. Square column; 11. Pressing plate; 12. Pull ring; 13. Limit block; 2. Square cone; 21. Through hole; 3. Rotating column; 31. Baffle plate; 311. Cutting knife; 4. Driving assembly; 41. Connecting sleeve; 42. Sliding rod. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0018] See also Figure 1-7 The embodiment of the present invention provides a prefabricated pipe segment soil squeezing hole rapid pile forming mechanism, comprising a hollow square column 1, a square cone 2, a rotating column 3 and a driving assembly 4, wherein the end face of the square cone 2 is fixedly connected to the lower end of the square column 1, and a plurality of through holes 21 communicating with the interior of the square column 1 are opened on the oblique cone surface of the square cone 2; the rotating column 3 is rotatably connected to the square cone 2, and a plurality of baffles 31 are fixedly connected to the rotating column 3, and the rotating column 3 has a rotation stroke relative to the square cone 2 so that each baffle 31 blocks each of the through holes 21 correspondingly. The blocking station of the hole 21; the driving component 4 is used to drive the rotating column 3 to rotate. Specifically, the driving component 4 includes a connecting sleeve 41 and a sliding rod 42. The connecting sleeve 41 is coaxially fixedly connected to the rotating column 3, and a spiral groove is provided on the inner wall of the connecting sleeve 41; the sliding rod 42 is slidably connected in the square column 1 along the axis of the square column 1, and a limit block 13 is provided on the inner wall of the square column 1 to limit the sliding rod 42 from sliding upward. A slider that slides with the spiral groove is fixedly connected to the sliding rod 42. The square column 1 is a square column, and the square cone 2 is a quadrangular pyramid.

[0019] Working principle: On a leveled site, use a total station or GPS to measure the pile position of the square pile, use white lime to spread the four side lines of the pile hole, measure the pile hole elevation and mark it while staking out, first use a crane to erect the square column 1 on the ground, and then use the pile driver to press the slide bar 42 down to make the slide bar 42 slide relative to the square column 1. During the sliding process of the slide bar 42, the slider on the slide bar 42 will slide with the spiral groove of the connecting sleeve 41, and then drive the connecting sleeve 41 to drive the rotating column 3 relative to the square column 1. The column 1 rotates, and the rotating column 3 drives each baffle plate 31 to rotate during the rotation process, so that each baffle plate 31 can be moved away from the blocking position, so that the through hole 21 of the square cone 2 is connected with the interior of the square column 1, and then the soil can enter the square column 1 along the through hole 21, and then the pile driver continues to press the square column 1 down. The square cone 2 reduces the resistance of the square column 1 during the pressing process. In addition, during the pressing process of the square column 1, the soil around the square column 1 will be compacted, and some soil will enter the square column 1 along the through hole 21 of the square cone 2. After the square column 1 is lowered to the required pile hole depth, the pressing on the square column 1 is stopped, and then the sliding rod 42 is first made to slide vertically upward by the crane, and then the sliding block cooperates with the spiral groove to make the rotating column 3 rotate, and the baffle plate 31 can be reset to the blocking position, and then the square column 1 is pulled up by the crane. During the rising process, the soil in the square column 1 can remain in the square column 1, and then the square column 1 is moved to the top of the waste soil pile, and the crane again disconnects the pulling force on the sliding rod 42 to drive The slide bar 42 is made to slide relative to the square column 1, so that each baffle 31 is away from the shielding position, and then the soil falls from the square column 1. In this process, the square column 1 needs to be slid by a crane; the prefabricated pipe segment is hoisted and inserted into the excavated pile hole, the prefabricated pipe segment is centered and straightened, and the pipe segment is statically pressed to the excavation depth. The soil is squeezed into the hole, which makes it easier to drive the prefabricated pipe segment. The prefabricated pipe segment can also play a role in protecting the wall, ensuring that the excavated pile hole will not collapse; the user repeats the above work many times.

[0020] In the above technical scheme, the present invention provides a prefabricated pipe segment soil squeezing hole rapid pile forming mechanism and method. During the downward pressing process of the square column 1, the pile tip in the shape of a square cone 2 can more easily cut into the foundation soil. Its sharp shape can reduce the resistance of the pile tip when it enters the soil, and the shape of the pile tip helps to ensure that the pile body is vertically inserted into the soil, and at the same time can guide the pile body to be pressed down in the correct direction; in addition, through the through holes 21 of the square cone 2, while the square column 1 is compacting the surrounding soil, some excess soil can enter the square column 1 along the through holes 21 of the square cone 2, thereby reducing the downward pressing resistance of the square cone 2.

[0021] Among them, a pressing plate 11 is slidably connected to the square column 1. The pressing plate 11 is pressed on the ground, which can guide the downward pressure of the square column 1 on the one hand, and prevent the soil around the square column 1 from overflowing from the soil surface around the square column 1 on the other hand.

[0022] Among them, each baffle plate 31 is fixedly connected to a ring-shaped cutting knife 311 on the side, and the ring-shaped cutting knife 311 reduces the resistance encountered by the baffle plate 31 during the movement process. On the other hand, if the soil block is hard, the ring-shaped knife can cut it, so that the baffle plate 31 can smoothly reach the shielding station.

[0023] In another technical solution provided by the present invention, the driving assembly 4 includes a driving motor, a housing of the driving motor is fixedly connected to the inner wall of the square column 1 , and an output shaft of the driving motor is coaxially fixedly connected to the rotating column 3 .

[0024] A construction method: S1, on a flat site, using a total station or GPS to measure and lay out the pile position of the square pile, using white lime to spread out the four side lines of the pile hole, and measuring the pile hole elevation and marking it while laying out; S2, using a crane to erect a square column 1 on the marked pile position to be pressed; S3, using a pile driver to drive the square column 1 downward, before the square column 1 is pressed downward, a driving component 4 drives a baffle 31 away from a shielding position until there is no shielding on the through hole 21 of the square cone 2, and during the pressing process, a portion of soil will be squeezed into the square column 1 along the through hole 21; S4, when the square column 1 is pressed down to the depth required for pile pressing, the pressure system stops pressing the square column 1 downward, and then the driving component 4 is used to drive each baffle 31 to move to the shielding position, and then the square column 1 is pulled up and separated from the pile hole by the crane.

[0025] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A prefabricated pipe segment soil extrusion hole forming rapid pile forming mechanism, comprising a hollow square column (1), characterized in that: Also includes: A square cone (2), the end face of which is fixedly connected to the lower end of the square column (1), and the inclined cone surface of which is provided with a plurality of through holes (21) which are connected to the interior of the square column (1); A rotating column (3) is rotatably connected to the square cone (2), a plurality of baffles (31) are fixedly connected to the rotating column (3), and a blocking position is provided in which each of the baffles (31) blocks each of the through holes (21) in a one-to-one correspondence during the rotation stroke of the rotating column (3) relative to the square cone (2); A driving assembly (4) is used to drive the rotating column (3) to rotate.

2. A prefabricated pipe segment soil squeezing hole rapid pile forming mechanism according to claim 1, characterized in that: The drive assembly (4) comprises a drive motor, the housing of the drive motor is fixedly connected to the inner wall of the square column (1), and the output shaft of the drive motor is coaxially fixedly connected to the rotating column.

3. The prefabricated pipe segment soil squeezing hole rapid pile forming mechanism according to claim 1 is characterized in that: The driving component (4) comprises: A connecting sleeve (41) is coaxially fixedly connected to the rotating column (3), and a spiral groove is formed on the inner wall of the connecting sleeve; A slide bar (42) is slidably connected inside the square column (1) along the axis of the square column (1); a limit block is provided on the inner wall of the square column (1) to limit the slide bar (42) from sliding upward; and a slider is fixedly connected to the slide bar (42) to slide in cooperation with the spiral groove.

4. A prefabricated pipe segment soil squeezing hole rapid pile forming mechanism according to claim 1, characterized in that: A pressing plate (11) is slidably connected to the square column (1).

5. The prefabricated pipe segment soil squeezing hole rapid pile forming mechanism according to claim 1 is characterized in that: An annular cutting knife (311) is fixedly connected to the side surface of each baffle (31).

6. The prefabricated pipe segment soil squeezing hole rapid pile forming mechanism according to claim 1 is characterized in that: The square column (1) is fixedly connected with a plurality of pull rings (12) capable of being wound and connected with the steel cables of the crane.

7. A construction method, based on the prefabricated pipe segment soil squeezing hole forming rapid pile forming mechanism according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. On a flat site, use a total station or GPS to measure and lay out the pile position of the square pile, use white lime to mark the four side lines of the pile hole, and measure the pile hole elevation and mark it while laying out; S2, using a crane to erect the square column (1) on the marked pile position to be pressed; S3, driving the square column (1) downward by a pile driver. Before the square column (1) is pressed downward, the driving assembly (4) drives the blocking plate (31) away from the blocking position until the through hole (21) of the square cone (2) is unblocked. During the pressing process, a portion of soil is squeezed into the square column (1) along the through hole (21); S4. When the square column (1) is pressed down to the required depth for pile driving, the pile driver stops pressing down the square column (1), and then the driving assembly (4) drives each baffle (31) to move to the blocking position, and then the square column (1) is pulled up and separated from the pile hole by a crane.

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