A method for preventing soil from filling into a pile core of a waffle pile

Abstract

The application relates to a method for preventing soil from being filled into a pile core of a bamboo joint pile, and relates to the field of bamboo joint pile construction technology. The method S1 for preventing soil from being filled into the pile core of the bamboo joint pile is as follows: S1, before the bamboo joint pile is connected, a plugging column is inserted into one end of the pile core of the pile body far from the pile driver to be hoisted; S2, then, a hand wheel is connected with a rotating shaft through a self-locking mechanism, then the hand wheel is rotated, the rotating shaft is driven to rotate, and the locking mechanism is driven to lock the plugging column inserted into one end of the pile core of the pile body; S3, the pile body is hoisted by the pile driver, and the pile body is moved to one side of the pile body in the foundation; S4, after the pile body is aligned with the pile body in the foundation, the locking state of the locking mechanism is released, the plugging column is removed, and subsequent pile connection can be carried out. The application has the effects of effectively plugging the pile core, avoiding the hidden trouble of soil entering the pile core for subsequent core filling, and improving construction efficiency.

Description

Technical Field

[0001] This application relates to the field of bamboo-joint pile construction technology, and in particular to a method for preventing soil from being injected into the core of bamboo-joint piles. Background Technology

[0002] Bamboo-joint piles are widely used in soft soil. Soft soil has high water content, low bearing capacity, and soft texture. If anti-settlement measures are not taken when constructing buildings, excessive local settlement can easily occur, leading to building tilting or even collapse. In order to achieve the bearing capacity required by the design, bamboo-joint piles are often driven into the foundation for anti-settlement treatment.

[0003] Currently, bamboo-joint piles are annular prestressed concrete piles with equally spaced bamboo-joint-shaped protrusions along the axial direction. The outer surface dimensions of the bamboo-joint piles are staggered, and after they are installed and stabilized, they can form a relatively stable interlocking connection with the soil. During the construction of bamboo-joint piles, a pile driver is needed to drive the second section of the pile. However, no measures are taken to protect the pile core at the end of the bamboo-joint pile. When the pile driver is lifted, soil will be poured into the pile core. Cleaning the hole during the later core filling process is relatively labor-intensive, material-intensive, and financially costly. Summary of the Invention

[0004] In order to effectively seal the pile core, prevent soil from entering the pile core and causing hidden dangers for subsequent core grouting, and improve construction efficiency, this application provides a method for preventing soil from entering the core of bamboo-joint piles.

[0005] This application provides a method for preventing soil from being injected into the core of bamboo-joint piles, which adopts the following technical solution: including the following steps:

[0006] S1. First, before splicing the bamboo joint pile, insert the sealing column into the end of the pile core that is far away from the pile driver and is to be hoisted.

[0007] S2. Next, the handwheel is connected to the rotating shaft through the self-locking mechanism. Then, the handwheel is turned, which drives the rotating shaft to rotate. The rotating shaft can then drive the locking mechanism to lock the end of the sealing post inserted into the pile core.

[0008] S3. The pile driver lifts the pile and moves it to the side closer to the pile in the foundation.

[0009] S4. After the pile body is aligned with the pile body in the foundation, release the locking mechanism and remove the sealing column to proceed with the subsequent pile splicing.

[0010] By adopting the above technical solution, the sealing column can seal the end of the pile core away from the pile driver to be lifted, making it difficult for soil to enter the pile core during lifting. This effectively seals the pile core, preventing soil from entering and causing potential problems for subsequent core grouting. Furthermore, the locking mechanism locks one end of the sealing column, ensuring that it does not easily fall out of the pile core after the pile is lifted and is in a vertical position. To lock the sealing column, construction personnel only need to turn the handwheel, making operation simple and quick, improving construction efficiency. Conversely, to release the locking mechanism and remove the sealing column from the pile core for recycling, personnel only need to turn the handwheel in the opposite direction. Moreover, a self-locking mechanism is installed between the handwheel and the pile, preventing accidental contact or other misoperations that could cause the sealing column to fall, further improving the safety and stability of the bamboo-joint pile during splicing.

[0011] Optionally, in S2, the locking mechanism includes a locking ring fixedly sleeved on one end of the sealing post, a plug fixedly sleeved on the side of the sealing post away from the locking ring, multiple locking rods slidably connected in the pile body, a sliding block fixedly sleeved on the side of the locking rods away from the locking ring, a drive shaft rotatably connected between the sliding block and the pile body, a drive block fixedly sleeved on one end of the drive shaft, a linkage component disposed between the multiple drive shafts for driving the multiple drive shafts to rotate synchronously, and a limiting component disposed at one end of the handwheel for controlling the rotation angle of the drive block;

[0012] The pile body has multiple locking grooves that correspond one-to-one with multiple locking rods. The locking rods slide within the locking grooves. The plug abuts against the end of the pile body. The pile body also has a sliding groove that communicates with the locking grooves. The sliding block slides within the sliding groove.

[0013] The drive shaft is arranged along the length of the pile body, and a drive groove is also provided on the sliding block. The drive block is located in the drive groove and is cam-shaped. The cross-section of the drive groove is elliptical. The major axis of the elliptical drive groove is arranged along the tangent of the circumference of the pile core.

[0014] By adopting the above technical solution, when construction personnel lock the sealing column using the locking mechanism, they first connect the handwheel to the rotating shaft via the self-locking mechanism. Then, they turn the handwheel, which drives the rotating shaft to rotate. The rotating shaft, through a linkage assembly, drives multiple drive shafts to rotate, which in turn drive multiple drive blocks to rotate. The cam-shaped drive blocks, in conjunction with the elliptical drive grooves, synchronously drive multiple sliding blocks to move towards the locking ring. Next, the sliding blocks move the locking rod, causing it to abut against the bottom of the locking ring, and simultaneously causing the plug to abut against the end of the pile body. This locks the locking ring, thereby locking the sealing column. The linkage component can synchronously drive multiple drive shafts to rotate, making operation more convenient for construction personnel. Multiple locking rods are evenly distributed around the locking ring, uniformly fixing the four sides of the locking ring, thus preventing the sealing column from tilting and the gap between the plug and the pile body, improving the sealing effect of the sealing column. The limiting component limits the rotation angle of the drive block, so that when the far hub side of the cam-shaped drive block abuts against the short axis side of the drive groove away from the locking rod, it can drive the locking rod to retract into the locking groove. When the near hub side of the cam-shaped drive block abuts against the short axis side of the drive groove near the locking rod, it can drive the locking rod to extend out of the locking groove, thus precisely controlling the extension and retraction of the locking rod.

[0015] Optionally, the linkage assembly includes a first bevel gear fixedly sleeved on the end of the rotating shaft away from the handwheel, a gear ring rotatably connected to the pile body, a second bevel gear fixedly sleeved on the outer wall of the gear ring, and a drive gear fixedly sleeved on the drive shaft; the first bevel gear and the second bevel gear mesh with each other, and the drive gear meshes with the gear ring.

[0016] By adopting the above technical solution, when the rotating shaft rotates, the rotating shaft drives the first bevel gear fixedly connected to it to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear can drive the gear ring fixedly connected to it to rotate, the gear ring can synchronously drive multiple drive gears to rotate, the drive gears drive the drive shaft to rotate, and the drive shaft can drive the drive block fixedly connected to it to rotate, thereby realizing the synchronous rotation of multiple drive blocks.

[0017] Optionally, a control groove is provided on the outer wall of the pile body, the handwheel is located in the control groove, and the limiting assembly includes a control rod fixed on the side of the handwheel near the rotation shaft and two limiting rods fixed in the control groove, with the control rod located between the two limiting rods.

[0018] By adopting the above technical solution, when the construction worker rotates the handwheel, and the control lever abuts against one of the limit levers, the far hub side of the cam-shaped drive block abuts against the short axis side of the elliptical locking lever in the drive groove. This causes the sliding block to move the locking lever away from the locking ring, thereby causing the locking lever to retract into the locking groove. When the control lever abuts against the other limit lever, the near hub side of the cam-shaped drive block abuts against the short axis side of the drive groove near the locking lever, causing the locking lever to extend out of the locking groove. This makes the operation more convenient and precise for the construction worker.

[0019] Optionally, the upper end face of the locking rod near the locking ring is also chamfered.

[0020] By adopting the above technical solution, the chamfer is used to guide the locking rod when it abuts against the bottom of the locking ring. At the same time, a certain prestress is applied to the side where the locking ring abuts against the locking rod, so that the sealing column applies a certain tension to the plug, making the plug abut against the end of the pile body more tightly, and further making it difficult for soil to enter the pile core.

[0021] Optionally, the outer side of the plug is also coated with a wear-resistant layer to improve the wear resistance of the plug.

[0022] By adopting the above technical solution, the pile driver needs to drag the end of the pile away from the lifting point during the process of lifting the bamboo-joint pile, thereby dragging and rubbing the plug. The wear-resistant layer can improve the wear resistance of the outside of the plug, so that the plug is not easily worn after repeated use, thus improving the service life of the plug.

[0023] Optionally, in S2, the self-locking mechanism includes a plug block fixed to one end of the handwheel near the rotating shaft, and a spring-loaded assembly disposed between the plug block and the rotating shaft for applying a spring force to the plug block toward the side away from the rotating shaft.

[0024] The rotating shaft has a plug slot near the handwheel end that is adapted to the plug block. The plug block is a regular M-sided shape, where M≥3, and the plug block can be plugged into the plug slot.

[0025] By adopting the above technical solution, when the self-locking mechanism connects the handwheel to the rotating shaft, the construction worker first presses the handwheel towards the side closest to the rotating shaft and rotates the handwheel to adjust it so that the plug block is inserted into the plug slot, thus connecting the handwheel to the rotating shaft. Then, the construction worker rotates the handwheel, which drives the rotating shaft to rotate. When the construction worker does not need to operate the handwheel to rotate, the rebound component will automatically disengage the plug block from the plug slot, thereby disconnecting the handwheel from the rotating shaft. Therefore, even if the construction worker accidentally touches the handwheel, the handwheel will only rotate on its own and will not drive the rotating shaft to rotate, thus improving the stability of the locking mechanism in locking the sealing column.

[0026] Optionally, the rebound assembly includes a telescopic rod rotatably connected between the plug block and the rotating shaft, and a spring sleeved on the outside of the telescopic rod, wherein the spring is always in a compressed state.

[0027] By adopting the above technical solution, when the construction personnel do not need to operate the handwheel, they can release the handwheel, and the handwheel will move away from the rotating shaft under the action of the spring force. This ensures that even if the construction personnel accidentally touch the handwheel, the handwheel will only rotate on its own and will not drive the rotating shaft to rotate. As a result, the locking mechanism will not release the locking of the sealing column, making the sealing column less prone to shaking. This, in turn, makes it less likely for the sealing column to fall off during the hoisting of the pile, reducing safety hazards. Furthermore, the telescopic rod guides the spring during movement, making it less likely for the spring to deviate or be damaged during movement.

[0028] Optionally, a magnetic adsorption ring is fixed on the side of the handwheel near the rotating shaft. The rotating shaft is made of iron material. The adsorption ring can be adsorbed to one side of the rotating shaft. When the plug is inserted into the plug slot, the attraction between the adsorption ring and the rotating shaft is greater than the elastic force of the spring.

[0029] By adopting the above technical solution, when the construction worker inserts the plug into the plug slot, the adsorption ring and the rotating shaft are attracted to each other, and the attraction between the adsorption ring and the rotating shaft is greater than the elastic force of the spring. This allows the construction worker to operate the handwheel without having to constantly apply force to press the handwheel towards the side close to the rotating shaft when it needs to be turned, making the operation more convenient and labor-saving. When the construction worker does not need to operate the handwheel, he can drag the handwheel away from the rotating shaft to separate the adsorption ring from the rotating shaft. At this time, the handwheel will automatically move away from the rotating shaft under the elastic force of the spring, thereby disconnecting the connection between the handwheel and the rotating shaft.

[0030] Optionally, in S1, the sealing post is hollow inside.

[0031] By adopting the above technical solution, the hollow interior is designed to reduce the weight of the sealing column, making it easier and more convenient for construction workers to install the sealing column, while also reducing the cost of the sealing column.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. The sealing column can seal the end of the pile core away from the pile driver to be lifted, making it difficult for soil to enter the pile core during lifting. This effectively seals the pile core and prevents soil from entering the pile core, thus avoiding potential problems for subsequent core filling. The locking mechanism locks one end of the sealing column, making it difficult for the sealing column to fall out of the pile core after the pile is lifted and is in a vertical position. At the same time, when construction personnel need to lock the sealing column, they only need to turn the handwheel to lock it, making the operation simple and quick and improving construction efficiency.

[0034] 2. The linkage components in the locking mechanism can synchronously drive multiple drive shafts to rotate, making it more convenient for construction personnel to operate. Moreover, multiple locking rods are evenly distributed along the circumference of the locking ring, which evenly fixes the four sides of the locking ring, making it less likely for the sealing column to deviate, and thus less likely for gaps to form between the plug and the pile body, thereby improving the sealing effect of the sealing column.

[0035] 3. The limiting component limits the rotation angle of the drive block, so that when the far hub side of the cam-shaped drive block abuts against the short shaft side of the drive groove away from the locking rod, it can drive the locking rod to retract into the locking groove. When the near hub side of the cam-shaped drive block abuts against the short shaft side of the drive groove near the locking rod, it can drive the locking rod to extend out of the locking groove, thereby precisely controlling the extension and retraction of the locking rod.

[0036] 4. The chamfer is used to guide the locking rod when it abuts against the bottom of the locking ring. At the same time, it applies a certain prestress to the side where the locking ring and locking rod abut against each other, so that the sealing column applies a certain tension to the plug, making the plug abut against the end of the pile body more tightly, and further making it less likely for soil to enter the pile core.

[0037] 5. A self-locking mechanism is installed between the handwheel and the pile body. The self-locking mechanism makes it difficult for construction personnel to accidentally touch or otherwise misoperate the handwheel, which could cause the sealing column to fall off, thereby further improving the safety and stability of the bamboo joint pile during pile splicing.

[0038] 6. When the construction personnel do not need to operate the handwheel, the rebound component will automatically disengage the plug block from the plug slot, thereby disconnecting the handwheel from the rotating shaft. Even if the construction personnel accidentally touch the handwheel, the handwheel will only rotate on its own and will not drive the rotating shaft to rotate, thus preventing the locking mechanism from releasing the sealing column. This makes the sealing column less prone to shaking and reduces the risk of the sealing column falling off during the hoisting of the pile. This improves the stability of the locking mechanism for the sealing column and reduces safety hazards. Furthermore, the telescopic rod guides the spring during movement, making it less likely for the spring to deviate or be damaged during movement.

[0039] 7. When the construction worker inserts the plug into the plug slot, the adsorption ring and the rotating shaft attract each other, and the magnetism of the adsorption ring is greater than the elastic force of the spring. This allows the construction worker to operate the handwheel without constantly applying force to the side closer to the rotating shaft when it needs to be turned, making the operation more convenient and labor-saving. When the construction worker does not need to operate the handwheel, he can drag the handwheel away from the rotating shaft to separate the adsorption ring from the rotating shaft. At this time, the handwheel will automatically move away from the rotating shaft under the elastic force of the spring, thereby disconnecting the handwheel from the rotating shaft. Attached Figure Description

[0040] Figure 1This is a structural diagram illustrating the installation process of the sealing column and bamboo joint pile;

[0041] Figure 2 This represents a partial cross-sectional view of the bamboo-joint pile;

[0042] Figure 3 This is a partial sectional view showing the locking mechanism;

[0043] Figure 4 This is a partial sectional view showing the mating relationship between the sliding block and the driving block;

[0044] Figure 5 This is a partial sectional view showing the self-locking mechanism.

[0045] Explanation of reference numerals in the attached drawings: 1. Sealing post; 2. Pile body; 21. Pile core; 22. Control groove; 23. Sliding groove; 3. Self-locking mechanism; 31. Insertion block; 32. Rebound assembly; 321. Telescopic rod; 323. Spring; 33. Adsorption ring; 4. Handwheel; 5. Rotating shaft; 51. Insertion groove; 6. Locking mechanism; 61. Locking ring; 62. Plug; 63. Locking rod; 64. Sliding block; 641. Drive groove; 65. Drive shaft; 66. Drive block; 67. Linkage assembly; 671. First bevel gear; 672. Gear ring; 673. Second bevel gear; 674. Drive gear; 68. Limiting assembly; 681. Control rod; 682. Limiting rod. Detailed Implementation

[0046] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0047] This application discloses a method for preventing soil from seeping into the core of bamboo-joint piles. (Refer to...) Figure 1 and Figure 2 This includes the following steps:

[0048] S1. First, before splicing the bamboo joint pile, insert the sealing column 1 into the pile body 2 and the pile core 21 at the end away from the pile driver to be hoisted.

[0049] S2. Next, the handwheel 4 is connected to the rotating shaft 5 via the self-locking mechanism 3. Rotating the handwheel 4 causes the rotating shaft 5 to rotate, which in turn drives the locking mechanism 6 to lock the sealing post 1 into one end of the pile core 21 of the pile body 2. A control groove 22 is provided on the outer wall of the pile body 2, and the handwheel 4 is located within the control groove 22. The rotating shaft 5 is positioned perpendicular to the length of the pile body 2. The sealing post 1 is hollow internally to reduce its weight, making installation easier and more convenient for construction personnel.

[0050] Reference Figure 2 and Figure 3The locking mechanism 6 includes a locking ring 61 fixedly sleeved on one end of the sealing post 1. The locking ring 61 can be inserted into the pile core 21 of the pile body 2. A plug 62 is fixedly provided on the side of the sealing post 1 away from the locking ring 61. The plug 62 is located on the outside of the pile body 2 and abuts against the end of the pile body 2. The outside of the plug 62 is also coated with a wear-resistant layer to improve the wear resistance of the plug 62. The wear-resistant layer can be made of CrAlN material. During the process of lifting the bamboo-joint pile, the pile jack needs to drag the end of the pile body 2 away from the lifting. The wear-resistant layer can improve the wear resistance of the outside of the plug 62, making the plug 62 less prone to wear after repeated use. Multiple locking rods 63 are slidably connected inside the pile body 2. These locking rods 63 are evenly distributed circumferentially and abut against the lower part of the locking ring 61. The multiple locking rods 63 evenly fix the circumference of the locking ring 61, thus preventing the sealing column 1 from tilting and reducing the gap between the plug 62 and the pile body 2, improving the sealing effect of the sealing column 1. Multiple locking grooves corresponding to the locking rods 63 are formed inside the pile body 2, and the locking rods 63 slide within these grooves. A chamfer is also formed on the upper end face of the locking rod 63 near the locking ring 61. The chamfer guides the locking rod 63 when it abuts against the bottom of the locking ring 61 and applies a certain prestress to the side where the locking ring 61 and locking rod 63 abut, thereby applying a certain tensile force to the plug 62 from the sealing column 1, resulting in a tighter abutment between the plug 62 and the end of the pile body 2.

[0051] Reference Figure 2 and Figure 4 A sliding block 64 is fixedly provided on the side of the locking rod 63 away from the locking ring 61. A sliding groove 23 is also provided inside the pile body 2, which communicates with the locking groove, and the sliding block 64 slides within the sliding groove 23. A drive shaft 65 is rotatably connected between the sliding block 64 and the pile body 2, and the drive shaft 65 is set along the length direction of the pile body 2. A drive block 66 is fixedly sleeved on one end of the drive shaft 65. The drive block 66 is cam-shaped, and a drive groove 641 is also provided on the sliding block 64. The cross-section of the drive groove 641 is elliptical, and the major axis of the elliptical drive groove 641 is set along the tangent of the circumference of the pile core 21 of the pile body 2. The drive block 66 is located within the drive groove 641. A linkage component 67 is provided between multiple drive shafts 65. The linkage component 67 is used to drive multiple drive shafts 65 to rotate synchronously. A limit component 68 is provided at one end of the handwheel 4. The limit component 68 is used to control the rotation angle of the drive block 66.

[0052] Reference Figure 2 The linkage component 67 includes a first bevel gear 671 fixedly sleeved on the end of the rotating shaft 5 away from the handwheel 4, a gear ring 672 rotatably connected inside the pile body 2, a second bevel gear 673 fixedly sleeved on the outer wall of the gear ring 672, the first bevel gear 671 and the second bevel gear 673 meshing with each other, and a drive gear 674 fixedly sleeved on the drive shaft 65, the drive gear 674 meshing with the gear ring 672.

[0053] Reference Figure 5 The limiting component 68 includes a control rod 681 fixed on the side of the handwheel 4 near the rotating shaft 5, and two limiting rods 682 fixed in the control groove 22, with the control rod 681 located between the two limiting rods 682.

[0054] When the construction personnel lock the sealing column 1 using the locking mechanism 6, they first connect the handwheel 4 to the rotating shaft 5 via the self-locking mechanism 3. Then, the construction personnel turn the handwheel 4, which drives the rotating shaft 5 to rotate. The rotating shaft 5 drives the first bevel gear 671 to rotate, which in turn drives the second bevel gear 673 to rotate. The second bevel gear 673 then drives the gear ring 672, which is fixedly connected to it, to rotate. The gear ring 672 then synchronously drives multiple drive gears 674 to rotate. Next, the drive gears 674 drive the drive shaft 65 to rotate, which in turn drives multiple drive blocks 66, which are fixedly connected to it, to rotate. The drive blocks 66, which are cam-shaped, can synchronously drive multiple sliding blocks 64 to move towards the side closer to the locking ring 61 under the action of the elliptical drive groove 641. Then, the sliding blocks 64 drive the locking rod 63 to move, so that the locking rod 63 abuts against the bottom of the locking ring 61, and at the same time, the plug 62 abuts against the end of the pile body 2, thereby locking the locking ring 61 and thus locking the sealing column 1. Furthermore, when the construction worker rotates the handwheel 4, and the control lever 681 abuts against one of the limit levers 682, the hub-far side of the cam-shaped drive block 66 abuts against the short axis side of the drive groove 641 away from the elliptical locking lever 63. This causes the sliding block 64 to move the locking lever 63 away from the locking ring 61, thereby causing the locking lever 63 to retract into the locking groove. When the control lever 681 abuts against the other limit lever 682, the hub-near side of the cam-shaped drive block 66 abuts against the short axis side of the drive groove 641 near the locking lever 63, causing the locking lever 63 to extend out of the locking groove. This allows the construction worker to precisely control the extension and retraction of the locking lever 63 into the locking groove.

[0055] Reference Figure 2 and Figure 5 The self-locking mechanism 3 includes a plug-in block 31 fixedly mounted on one end of the handwheel 4 near the rotating shaft 5. The plug-in block 31 is hexagonal in shape. The rotating shaft 5 near the handwheel 4 has a plug-in groove 51 that is adapted to the plug-in block 31, and the plug-in block 31 can be inserted into the plug-in groove 51. A spring-loaded component 32 is provided between the plug-in block 31 and the rotating shaft 5. The spring-loaded component 32 is used to apply a spring force to the plug-in block 31 toward the side away from the rotating shaft 5.

[0056] Reference Figure 5The rebound assembly 32 includes a telescopic rod 321 rotatably connected between the plug block 31 and the rotating shaft 5. A spring 323 is sleeved on the outside of the telescopic rod 321, and the spring 323 is always in a compressed state. The telescopic rod 321 is used to guide the spring 323 during movement, so that the spring 323 is not easily deflected or damaged during movement.

[0057] Reference Figure 5 The handwheel 4 is also fixed with a magnetic adsorption ring 33 on the side near the rotating shaft 5. The rotating shaft 5 is made of iron material. The adsorption ring 33 can be adsorbed to one side of the rotating shaft 5. When the plug block 31 is inserted into the plug slot 51, the attraction between the adsorption ring 33 and the rotating shaft 5 is greater than the elastic force of the spring 323.

[0058] When the self-locking mechanism 3 connects the handwheel 4 to the rotating shaft 5, the operator first presses the handwheel 4 towards the side closest to the rotating shaft 5 and rotates the handwheel 4 to adjust it so that the insertion block 31 is inserted into the insertion slot 51. At this time, the spring 323 is further compressed, and the adsorption ring 33 and the rotating shaft 5 are mutually adsorbed, thus connecting the handwheel 4 and the rotating shaft 5. Then, the operator rotates the handwheel 4, which drives the rotating shaft 5 to rotate. Moreover, the operator does not need to constantly apply force to press the handwheel 4 towards the side closest to the rotating shaft 5, making the operation more convenient and labor-saving for the operator. When the construction personnel do not need to operate the handwheel 4, they can drag the handwheel 4 away from the rotating shaft 5 to separate the adsorption ring 33 from the rotating shaft 5. At this time, under the elastic force of the spring 323, the handwheel 4 will automatically drive the plug block 31 to disengage from the plug slot 51. At the same time, the handwheel 4 will move away from the rotating shaft 5, thereby disconnecting the handwheel 4 from the rotating shaft 5. Even if the construction personnel accidentally touch the handwheel 4, the handwheel 4 will only rotate on its own and will not drive the rotating shaft 5 to rotate. This will prevent the locking mechanism 6 from locking the sealing column 1, making the sealing column 1 less prone to shaking. Consequently, the sealing column 1 is less likely to fall off during the hoisting of the pile body 2, reducing safety hazards.

[0059] S3. The pile driver lifts the pile 2 and moves it to the side of the pile 2 closer to the foundation.

[0060] S4. After the pile body 2 is aligned with the pile body 2 in the foundation, the construction personnel press the handwheel 4 to connect the handwheel 4 with the rotating shaft 5. Then, rotate the handwheel 4 to release the locking state of the locking mechanism 6 and remove the sealing column 1 for subsequent pile splicing.

[0061] The implementation principle of the method for preventing soil filling in the core of bamboo-joint piles in this application embodiment is as follows: Before splicing the bamboo-joint piles, the sealing column 1 is first inserted into the end of the pile body 2 and the pile core 21 away from the end to be hoisted by the pile driver. Then, the construction personnel press the handwheel 4, so that the handwheel 4 is connected to the rotating shaft 5 through the self-locking mechanism 3. Then, the construction personnel turn the handwheel 4, which drives the rotating shaft 5 to rotate. The rotating shaft 5 simultaneously drives multiple locking rods 63 to lock the locking ring 61 at one end of the core 21 of the pile body 2, which is inserted into the sealing column 1. Then, the pile driver lifts the pile body 2 and moves the pile body 2 to the side close to the pile body 2 in the foundation. After the pile body 2 is aligned with the pile body 2 in the foundation, the construction personnel press the handwheel 4, so that the handwheel 4 is connected to the rotating shaft 5. Then, the handwheel 4 is turned, which simultaneously drives multiple locking rods 63 to retract into the locking groove, thereby releasing the locking state of the locking mechanism 6. The sealing column 1 can then be removed for subsequent splicing. The sealing column 1 can keep the core 21 of the pile body 2 away from the pile driver. The end of the pile driver to be hoisted is sealed to prevent soil from entering the pile core 21 during hoisting, thus effectively sealing the pile core 21 and preventing soil from entering the pile core 21, which could cause problems for subsequent core grouting. The locking mechanism 6 locks one end of the sealing column 1, ensuring that the sealing column 1 does not easily fall out of the pile core 21 after the pile body 2 is hoisted and in a vertical position. To lock the sealing column 1, construction personnel only need to turn the handwheel 4, making operation simple and quick, improving construction efficiency. Conversely, to release the locking mechanism 6 and remove the sealing column 1 from the pile core 21 for recycling, construction personnel only need to turn the handwheel 4 in the opposite direction. Furthermore, a self-locking mechanism 3 is installed between the handwheel 4 and the pile body 2, preventing accidental contact or other misoperation that could cause the sealing column 1 to fall, further improving the safety and stability of the bamboo-joint pile during splicing.

[0062] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method for preventing soil from being injected into the core of bamboo-joint piles, characterized in that: S1. First, before splicing the bamboo joint pile, insert the sealing column (1) into the pile body (2) and the pile core (21) away from the end of the pile driver to be hoisted. S2. Next, the handwheel (4) is connected to the rotating shaft (5) through the self-locking mechanism (3). Then, the handwheel (4) is rotated, which drives the rotating shaft (5) to rotate. The rotating shaft (5) can then drive the locking mechanism (6) to lock the sealing column (1) into one end of the pile core (21) of the pile body (2). S3. The pile driver lifts the pile (2) and moves the pile (2) to the side of the pile (2) closer to the foundation. S4. After the pile body (2) is aligned with the pile body (2) in the foundation, release the locking state of the locking mechanism (6) and remove the sealing column (1) to proceed with the subsequent pile splicing. In S2, the locking mechanism (6) includes a locking ring (61) fixedly sleeved on one end of the sealing post (1), a plug (62) fixed on the side of the sealing post (1) away from the locking ring (61), a plurality of locking rods (63) slidably connected in the pile body (2), a sliding block (64) fixed on the side of the locking rod (63) away from the locking ring (61), a drive shaft (65) rotatably connected between the sliding block (64) and the pile body (2), a drive block (66) fixedly sleeved on one end of the drive shaft (65), a linkage assembly (67) set between the plurality of drive shafts (65) for driving the plurality of drive shafts (65) to rotate synchronously, and a limiting assembly (68) set at one end of the handwheel (4) for controlling the rotation angle of the drive block (66). The pile body (2) has multiple locking grooves that correspond one-to-one with multiple locking rods (63). The locking rods (63) slide within the locking grooves. The plug (62) abuts against the end of the pile body (2). The pile body (2) also has a sliding groove (23) that communicates with the locking grooves. The sliding block (64) slides within the sliding groove (23). The drive shaft (65) is arranged along the length of the pile body (2). The sliding block (64) is also provided with a drive groove (641). The drive block (66) is located in the drive groove (641). The drive block (66) is arranged in the shape of a cam. The cross section of the drive groove (641) is elliptical. The major axis of the elliptical drive groove (641) is arranged along the tangent of the circumference of the pile core (21) of the pile body (2).

2. The method for preventing soil filling into the core of bamboo-joint piles according to claim 1, characterized in that: The linkage assembly (67) includes a first bevel gear (671) fixedly sleeved on the end of the rotating shaft (5) away from the handwheel (4), a gear ring (672) rotatably connected in the pile body (2), a second bevel gear (673) fixedly sleeved on the outer wall of the gear ring (672), and a drive gear (674) fixedly sleeved on the drive shaft (65); the first bevel gear (671) and the second bevel gear (673) mesh with each other, and the drive gear (674) meshes with the gear ring (672).

3. The method for preventing soil filling into the core of bamboo-joint piles according to claim 1, characterized in that: The outer wall of the pile body (2) is provided with a control groove (22), the handwheel (4) is located in the control groove (22), and the limiting component (68) includes a control rod (681) fixed on the side of the handwheel (4) near the rotating shaft (5) and two limiting rods (682) fixed in the control groove (22). The control rod (681) is located between the two limiting rods (682).

4. The method for preventing soil filling into the core of bamboo-joint piles according to claim 1, characterized in that: The upper end face of the locking rod (63) near the locking ring (61) is also chamfered.

5. The method for preventing soil filling into the core of bamboo-joint piles according to claim 1, characterized in that: The plug (62) is also coated with a wear-resistant layer to improve its wear resistance.

6. The method for preventing soil filling into the core of bamboo-joint piles according to claim 1, characterized in that: In S2, the self-locking mechanism (3) includes a plug block (31) fixed to one end of the handwheel (4) near the rotating shaft (5), and a spring-loaded assembly (32) disposed between the plug block (31) and the rotating shaft (5) for applying a spring force to the plug block (31) toward the side away from the rotating shaft (5). The rotating shaft (5) has a plug groove (51) that is compatible with the plug block (31) at one end near the handwheel (4). The plug block (31) is arranged in a regular M-gon shape, where M≥3. The plug block (31) can be plugged into the plug groove (51).

7. The method for preventing soil filling into the core of bamboo-joint piles according to claim 6, characterized in that: The rebound assembly (32) includes a telescopic rod (321) rotatably connected between the plug block (31) and the rotating shaft (5), and a spring (323) sleeved on the outside of the telescopic rod (321), the spring (323) being always in a compressed state.

8. The method for preventing soil filling into the core of bamboo-joint piles according to claim 7, characterized in that: The handwheel (4) is also fixed with a magnetic adsorption ring (33) on the side near the rotating shaft (5). The rotating shaft (5) is made of iron material. The adsorption ring (33) can be adsorbed to one side of the rotating shaft (5). When the plug block (31) is inserted into the plug slot (51), the attraction between the adsorption ring (33) and the rotating shaft (5) is greater than the elastic force of the spring (323).

9. A method for preventing soil grouting in the core of bamboo-joint piles according to any one of claims 1-8, characterized in that: In S1, the sealing column (1) is hollow inside.

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