A Rotary Drilling and Pouring Device for Bridge Pile Foundations and Construction Method

Abstract

This application relates to the technical field of bridge pile foundation construction, and in particular to a rotary drilling and pouring device for bridge pile foundations and a construction method. The pouring device includes a mounting frame, a vibrating assembly, a lifting conduit, sectional conduits, and a control assembly; a hopper for containing concrete is mounted on the mounting frame; the vibrating assembly includes a rotating sleeve, a driving member, and a vibrating rod. The vibrating rod is arranged on the rotating sleeve, and the driving member can drive the rotating sleeve to rotate to cooperate with the vibrating rod to stir and vibrate the concrete in the hopper; the lifting conduit is communicated with the sectional conduits. There are multiple sectional conduits, and the multiple sectional conduits are connected end to end and extend to the bottom of the pile hole. The rotating sleeve can drive the lifting conduit and the sectional conduits to rise and fall; the control assembly can control the lifting conduit to rise according to the pouring height of the concrete in the pile hole to ensure that the depth of the sectional conduits buried in the concrete remains constant. This application has the effects of simplifying the removal steps of the conduits, reducing the unevenness during the diffusion of the concrete, and improving the construction efficiency and quality of the pile body.

Description

Technical Field

[0001] The present application relates to the technical field of bridge pile foundation construction, and in particular to a bridge pile foundation rotary drilling and grouting device and a construction method. Background Art

[0002] Bridge pile foundation construction is an important part of modern civil engineering, especially in large-scale infrastructure projects such as highways, railways and bridge construction. With the accelerated advancement of urbanization and technological progress, bridge pile foundation construction technology has also been continuously innovated and developed. Traditional methods mainly rely on manual operation and simple mechanical equipment, which are not only inefficient and labor-intensive, but also difficult to meet the needs of increasingly complex engineering projects. In recent years, the application of automation and intelligent equipment has greatly improved construction quality and efficiency.

[0003] Among them, mud rotary drilling is an efficient construction method and is widely used in bridge pile foundation construction under various geological conditions. The pile hole excavated by the mud rotary drilling is filled with mud, which can protect the wall and prevent the hole wall from collapsing. When pouring the pile body, it needs to be done in the mud. Use a catheter to extend into the bottom of the pile hole and pour concrete into the catheter. After the concrete reaches the bottom of the pile hole, the lower end of the catheter will be buried to a certain depth to prevent the mud in the pile hole from entering the catheter. With the continuous pouring of subsequent concrete, the concrete inside the pile hole continues to rise, and the catheter is lifted and gradually removed until the poured concrete reaches the designed elevation. During the pouring process, the buried depth of the catheter in the concrete is controlled between 2-6 meters, and the position of the concrete surface in the hole is measured in time and the buried depth of the catheter is adjusted.

[0004] However, the gradual lifting of the conduit needs to be dismantled in multiple times. Each time the conduit is dismantled, the large hopper above it needs to be removed. Since the large hopper is too large, the transfer process is very troublesome. When the large hopper is reset, its discharge hole and horizontality need to be calibrated and adjusted with the conduit for multiple times. The overall operation is cumbersome and inefficient, which is not conducive to the continuous pouring of pile foundation concrete. In addition, the concrete entering the hopper is easily mixed with air during the transfer process, and during the pouring, the concrete is discharged upward after falling into the pile hole by its own weight. Affected by the flow characteristics of the concrete, there will be uneven diffusion during the upward extrusion of the concrete, and it is easy for floating slurry or stone to sink to the bottom, thus affecting the quality of the pile body. Summary of the invention

[0005] In order to simplify the removal steps of the conduit, reduce the unevenness of concrete diffusion, and improve the efficiency and quality of pile construction, the present application provides a bridge pile foundation rotary drilling and grouting device and a construction method.

[0006] The present application provides a bridge pile foundation rotary drilling and grouting device that adopts the following technical solution:

[0007] A bridge pile foundation rotary drilling and grouting device, comprising:

[0008] An installation frame, which is fixedly arranged above the pile hole, and a hopper for containing concrete is installed on the installation frame;

[0009] A vibrating assembly, which includes a rotating sleeve, a driving member and a vibrating rod; the rotating sleeve is rotatably arranged on the installation frame; the driving member is used to drive the rotating sleeve to rotate; the vibrating rod is arranged on the rotating sleeve for vibrating the concrete in the hopper;

[0010] A lifting conduit, which slidably penetrates through the hopper, and a material dropping groove is formed on the lifting conduit, and the concrete in the hopper can flow into the lifting conduit through the material dropping groove; when the rotating sleeve rotates, it can drive the lifting conduit to rise or fall in the hopper; a U-shaped baffle is arranged on the hopper, and the U-shaped baffle can hermetically cover the part of the material dropping groove outside the hopper;

[0011] Segment conduits, and there are multiple segment conduits; the multiple segment conduits are connected end to end in a detachable manner, and the feeding end of the first segment conduit is connected to the discharging end of the lifting conduit in a detachable manner, and the discharging end of the last segment conduit extends to the bottom of the pile hole; when the lifting conduit rises or falls, it can drive the segment conduits to rise or fall synchronously;

[0012] A control assembly, which is electrically connected to the driving member to control the lifting and lowering of the lifting conduit, and the control assembly can synchronously control the lifting of the lifting conduit according to the real-time pouring height of the concrete in the pile hole so that the depth of the segment conduits buried in the concrete always remains constant.

[0013] By adopting the above technical solutions, the rotary drilling and pouring device for bridge pile foundations can simplify the removal steps of the conduits during the construction process, reduce the non-uniformity during the diffusion of concrete, and improve the construction efficiency and quality of the pile body; specifically, the vibrating assembly can stir and vibrate the concrete in the hopper driven by the rotating sleeve, effectively remove the air bubbles in the concrete, improve the compactness and uniformity of the concrete, and ensure the quality of the pile body; at the same time, the detachable connection method between the lifting conduit and the segment conduits can directly remove the segment conduits without moving the hopper, avoiding the position error of the segment conduits caused by the movement of the hopper, and further improving the construction efficiency; in addition, during the process of pouring concrete into the pile hole, the control assembly can automatically adjust the position of the lifting conduit according to the real-time pouring height, so that the segment conduits are always buried in the concrete to a certain depth, reducing the problem of uneven diffusion of concrete during the upward extrusion process, avoiding the phenomenon of concrete floating slurry or stone sinking to the bottom, improving the continuity and uniformity of the concrete, and further ensuring the construction quality and stability of the pile body.

[0014] Optionally, the flowmeter is used to detect the mud flow discharged from the pile hole when pouring the pile body; the control host is electrically connected to the driving member and the flowmeter; the lifting conduit can be controlled to lift and lower through the control host; the control host can calculate the pouring height of the concrete in the pile hole in real time according to the measured value of the flowmeter and synchronously control the lifting of the lifting conduit, so that the depth of the segment conduit buried in the concrete is always kept constant.

[0015] By adopting the above technical solution, the flowmeter of the control component can monitor the discharge flow of the mud in the pile hole in real time. The control host accurately calculates the actual pouring height of the concrete according to the flow value, and automatically adjusts the lifting speed of the lifting conduit to ensure that the depth of the segment conduit buried in the concrete is always kept constant; this effectively avoids the errors caused by manual adjustment, improves the construction accuracy and efficiency, reduces the manual intervention at the same time, and reduces the labor intensity.

[0016] Optionally, a spiral groove is formed on the inner wall of the rotating sleeve, a guiding block is arranged on the outer wall of the lifting conduit, the lifting conduit is inserted into the rotating sleeve, and one end of the guiding block is slidably arranged in the spiral groove so that the lifting conduit is rotationally connected to the rotating sleeve in a spiral manner.

[0017] By adopting the above technical solution, the spiral groove on the inner wall of the rotating sleeve is matched with the guiding block on the outer wall of the lifting conduit, so that the rotation of the rotating sleeve can be directly converted into the linear motion of the lifting conduit; at the same time, since no additional power source is required to realize the lifting action, the operation of the whole device is more simple and efficient. This design not only simplifies the structure, reduces the number of transmission components, but also improves the reliability and stability of the system.

[0018] Optionally, a chute is formed on the U-shaped baffle, the extending direction of the chute is parallel to the lifting direction of the lifting conduit, and a sliding block is arranged on the outer wall of the lifting conduit, and one end of the sliding block is slidably abutted in the chute.

[0019] By adopting the above technical solution, the matching structure of the chute and the sliding block effectively prevents the relative rotation between the lifting conduit and the U-shaped baffle during the lifting process, ensures the stability and accuracy of the movement of the lifting conduit, avoids the problem of concrete leakage caused by relative rotation, and improves the safety and reliability of the construction.

[0020] Optionally, a roller is further arranged on the guiding block, and the roller is in rolling abutment with the groove wall of the spiral groove.

[0021] By adopting the above technical solution, the rollers on the guiding block rollingly abut against the groove wall of the spiral groove, which can significantly reduce the frictional resistance of the guiding block in the spiral groove, making the rotation of the rotating sleeve smoother, improving the movement accuracy and stability of the lifting conduit; this not only helps to enhance the uniformity and compactness during the concrete pouring process, but also reduces mechanical wear and extends the service life of the equipment.

[0022] Optionally, a limiting convex block is provided on the outer wall of the segment conduit; a limiting assembly is further included, and the limiting assembly includes a telescopic driving member and at least two limiting plates; the two limiting plates are arranged oppositely, and both limiting plates are slidably arranged on the mounting frame, and the telescopic driving member is used to move the two limiting plates away from or close to each other; when the two limiting plates approach each other, the two limiting plates can respectively abut against the outer walls on both sides of the segment conduit to position it, and the bottom surface of the limiting convex block can abut against the top surface of the limiting plate to prevent the segment conduit from falling; when the two limiting plates move away from each other, the two limiting plates and the limiting convex block do not interfere with each other.

[0023] By adopting the above technical solution, the limiting assembly can effectively fix the position of the segment conduit during the pouring process, avoiding its shaking due to external vibration or mud impact, ensuring the stability and safety of the construction; at the same time, when replacing the segment conduit, the cooperation between the limiting convex block and the limiting plate can effectively prevent the segment conduit from slipping or displacing after detaching from the lifting conduit, improving the safety and reliability of the construction; in addition, this structural design simplifies the installation and disassembly process of the segment conduit, reduces the operation difficulty of workers, and further improves the construction efficiency.

[0024] Optionally, a connecting pipe is provided between the lifting conduit and the first segment conduit; one end of the connecting pipe is communicated with the discharge end of the lifting conduit, and the other end is communicated with the feed end of the first segment conduit.

[0025] By adopting the above technical solution, the design of this connecting pipe can not only ensure the stable connection between the lifting conduit and the first segment conduit, but also replace connecting pipes of different sizes according to actual construction requirements, so that the lifting conduit can be connected to segment conduits of different diameters; this flexible design enables the entire pouring device to be applied in the construction of piles of various specifications, improving the versatility and application range of the equipment.

[0026] Optionally, when the lifting conduit rises to the highest position, the height of the bottom end of the lifting conduit from the top end of the pile hole is greater than the length of the segment conduit.

[0027] By adopting the above technical solution, sufficient space can be ensured for operation when disassembling the segment conduit, avoiding inconvenient operation caused by narrow space, and improving the construction efficiency and safety.

[0028] Optionally, a gasket is provided between the outer wall of the lifting conduit and the hopper.

[0029] By adopting the above technical solution, setting the gasket can effectively prevent the concrete in the hopper from leaking into the external environment during the pouring process, ensuring the safety and cleanliness of the construction process. At the same time, the gasket can also enhance the sealing performance between the lifting conduit and the hopper, reduce the air entering the hopper, and avoid excessive air mixing into the concrete during the transfer process, thereby improving the quality and stability of the concrete.

[0030] Optionally, a bridge pile foundation construction method includes the following steps:

[0031] Step 1: Fix and install the mounting frame above the pile hole, connect the multi-segment conduits end to end, connect the first segment conduit to the lifting conduit, extend the last segment conduit to a predetermined position at the bottom of the pile hole, and calibrate the relative position between the segment conduit and the pile hole;

[0032] Step 2: Use the ball pressing method to pour the first batch of concrete into the hopper, start the vibrating rod to vibrate the concrete in the hopper, and the amount of the first batch of concrete should ensure that the depth of the last segment conduit buried in the concrete is at least 1 meter;

[0033] Step 3: Continuously pour concrete into the hopper, and start the control component and the driving member. The control component controls the synchronous lifting of the lifting conduit according to the real-time concrete pouring depth in the pile hole so that the depth of the segment conduit buried in the concrete always remains constant. Stop pouring concrete into the hopper when the lifting conduit is lifted to the highest position;

[0034] Step 4: Remove the first segment conduit connecting the lifting conduit, lower the lifting conduit to the next segment conduit and connect them;

[0035] Step 5: Repeat Step 3 and Step 4 until the pile body pouring is completed.

[0036] By adopting the above technical solution, the design of the vibrating component enables the concrete in the hopper to be fully stirred and vibrated before pouring, reducing air mixing and improving the compactness and uniformity of the concrete; the linkage design between the lifting conduit and the segment conduit ensures that the conduit is always in the appropriate buried depth position during the pouring process, improving the uniformity of the concrete and the construction quality of the pile body; the introduction of the control component realizes the precise control of the lifting conduit, which can automatically adjust the position of the conduit according to the actual pouring height of the concrete in the pile hole, improving the construction efficiency and ensuring the continuity and stability of the construction process.

[0037] In summary, the present application includes the following beneficial technical effects:

[0038] 1. The rotary drilling and pouring device for bridge pile foundations can simplify the removal steps of the conduit during construction, reduce the unevenness during the diffusion of concrete, and improve the construction efficiency and quality of the pile body. Specifically, the vibrating component can stir and vibrate the concrete in the hopper driven by the rotating sleeve, effectively removing the air bubbles in the concrete, improving the compactness and uniformity of the concrete, and ensuring the quality of the pile body. At the same time, the detachable connection method between the lifting conduit and the sectional conduit can directly remove the sectional conduit without moving the hopper, avoiding the position error of the sectional conduit caused by the movement of the hopper, and further improving the construction efficiency. In addition, during the process of pouring concrete into the pile hole, the control component can automatically adjust the position of the lifting conduit according to the real-time pouring height, so that the sectional conduit is always buried in the concrete to a certain depth, reducing the problem of uneven diffusion of concrete during the upward extrusion process, avoiding the phenomenon of concrete floating slurry or stone sinking to the bottom, improving the continuity and uniformity of the concrete, and further ensuring the construction quality and stability of the pile body.

[0039] 2. The flowmeter of the control component can monitor the discharge flow of the slurry in the pile hole in real time. The control host can accurately calculate the actual pouring height of the concrete based on this flow value and automatically adjust the lifting speed of the lifting conduit to ensure that the depth of the sectional conduit buried in the concrete remains constant. This effectively avoids the errors caused by manual adjustment, improves the construction accuracy and efficiency, reduces the manual intervention at the same time, and lowers the labor intensity.

[0040] 3. The limiting component can effectively fix the position of the sectional conduit during the pouring process, prevent it from shaking due to external vibration or mud impact, and ensure the stability and safety of the construction. At the same time, when replacing the sectional conduit, the cooperation between the limiting convex block and the limiting plate can effectively prevent the sectional conduit from slipping or displacing after detaching from the lifting conduit, improving the safety and reliability of the construction. In addition, the structural design simplifies the installation and disassembly process of the sectional conduit, reduces the operation difficulty of the workers, and further improves the construction efficiency. Description of the Drawings

[0041] Figure 1 is the overall structural schematic diagram of Embodiment 1 of the present application.

[0042] Figure 2 is the internal structural schematic diagram of Embodiment 1 of the present application.

[0043] Figure 3 Mainly shows the internal structures of the rotating sleeve and the lifting conduit of Embodiment 1 of the present application.

[0044] Figure 4 is Figure 3 the partial enlarged view of part A in

[0045] Explanation of the reference numerals in the accompanying drawings: 1. mounting frame; 2. hopper; 21. U-shaped baffle; 211. slide; 3. vibrating assembly; 31. rotating sleeve; 311. spiral groove; 32. driving member; 33. vibrating rod; 4. lifting guide tube; 41. drop chute; 42. guide block; 43. slider; 5. segment guide tube; 51. limit bump; 6. control assembly; 61. flow meter; 62. control host; 7. roller; 8. limit assembly; 81. telescopic driving member; 82. limit plate; 9. connecting pipe; 10. sealing gasket. DETAILED DESCRIPTION

[0046] The following combination Figures 1 - 4 This application is described in further detail.

[0047] The embodiments of the present application disclose a bridge pile foundation rotary drilling and grouting device and a construction method.

[0048] Example 1

[0049] Reference Figure 1 and Figure 2 A bridge pile foundation rotary drilling and pouring device comprises a mounting frame 1, a vibrating assembly 3, a lifting guide tube 4, a segment guide tube 5 and a control assembly 6. Specifically, the mounting frame 1 is made of high-strength steel welding and has good bearing capacity and anti-deformation ability; the mounting frame 1 is arranged above the pile hole and fixed to the ground through ground nails to prevent it from moving during the pile foundation pouring process; a hopper 2 for holding concrete is fixedly installed on the mounting frame 1, and the hopper 2 has an inverted cone appearance. The hopper 2 is made of high-strength stainless steel, and the interior is smooth and flat to prevent corrosion and wear.

[0050] The vibrating assembly 3 includes a rotating sleeve 31, a driving member 32 and a vibrating rod 33; the rotating sleeve 31 is rotatably mounted on the mounting frame 1 through a bearing, and the rotation axis of the rotating sleeve 31 coincides with the central axis of the hopper 2; the driving member 32 is fixedly mounted on the mounting frame 1 and is used to drive the rotating sleeve 31 to rotate. The driving member 32 is a high-torque motor and is connected to the rotating sleeve 31 through a belt drive to drive the rotating sleeve 31 to rotate.

[0051] There are four vibrating rods 33, and the length of the vibrating rods 33 can be reasonably selected according to the size of the hopper 2 to ensure a good vibrating effect; the four vibrating rods 33 are fixed on the rotating sleeve 31 at equal intervals along the axis of the rotating sleeve 31, and the rotating sleeve 31 rotates the vibrating rods 33 to stir and vibrate the concrete in the hopper 2. In other embodiments, the number of vibrating rods 33 can be flexibly adjusted as needed; the vibrating rods 33 and the rotating sleeve 31 can also be elastically connected to slow down the transmission of vibration to the rotating sleeve 31, to prevent the rotating sleeve 31 from being deformed or stuck due to high-frequency vibration; the vibrating rods 33 can also be directly fixed on the inner wall of the hopper 2.

[0052] ReferenceFigure 3 and Figure 4 In this embodiment, the lifting conduit 4 can be made of seamless steel pipe, and its surface is chrome-plated to enhance wear resistance and corrosion resistance. The lifting conduit 4 slidably penetrates through the bottom of the hopper 2, and the central axis of the lifting conduit 4 coincides with the rotation axis of the rotating sleeve 31. One end of the lifting conduit 4 is inserted into the rotating sleeve 31, and the other end extends below the hopper 2. A material dropping groove 41 is formed in the side wall of the lifting conduit 4, and the extending direction of the material dropping groove 41 is parallel to the central axis of the lifting conduit 4. The concrete in the hopper 2 can flow into the lifting conduit 4 through the material dropping groove 41. A spiral groove 311 is formed in the inner wall of the rotating sleeve 31, and a guiding block 42 is fixedly connected to the outer wall of one end of the lifting conduit 4 located in the rotating sleeve 31. One end of the guiding block 42 facing away from the rotating sleeve 31 slidably abuts against the spiral groove 311. Such a design makes the lifting conduit 4 and the rotating sleeve 31 form a spiral rotational connection, and when the rotating sleeve 31 rotates, the lifting conduit 4 can be smoothly lifted or lowered.

[0053] Preferably, a roller 7 is provided at one end of the guiding block 42 located in the spiral groove 311, and the roller 7 is in rolling abutment with the groove wall of the spiral groove 311, further reducing the friction with the spiral groove 311 and improving the smoothness of movement. A sealing gasket 10 is provided between the outer wall of the lifting conduit 4 and the hopper 2. The sealing gasket 10 can effectively prevent the concrete in the hopper 2 from leaking to the external environment during the pouring process and enhance the sealing performance between the lifting conduit 4 and the hopper 2.

[0054] Referring to Figure 2 and Figure 3 In this embodiment, a U-shaped baffle 21 is provided on the outer wall of the hopper 2. The specific structure of the U-shaped baffle 21 is a metal plate with a U-shaped chute. The shape of the U-shaped chute matches the shape of the outer wall of the lifting conduit 4 to ensure that it can be closely attached to the outer wall of the lifting conduit 4. The U-shaped baffle 21 is in sliding abutment with the outer wall of the lifting conduit 4. The U-shaped baffle 21 can hermetically cover the part of the material dropping groove 41 located outside the hopper 2 to prevent concrete leakage. The extending direction of the U-shaped chute is parallel to the lifting direction of the lifting conduit 4 to ensure that the lifting conduit 4 can slide smoothly. A chute 211 is formed in the inner wall of the U-shaped baffle 21, and the extending direction of the chute 211 is parallel to the lifting direction of the lifting conduit 4. A slider 43 is provided on the outer wall of the lifting conduit 4. The slider 43 is a convex structure on the outer wall of the lifting conduit 4. One end of the slider 43 facing away from the lifting conduit 4 slidably abuts against the chute 211 to prevent relative rotation or detachment between the lifting conduit 4 and the mounting frame 1.

[0055] Preferably, the bottom end of the rotating sleeve 31 is higher than the height of the concrete in the hopper 2 to prevent the concrete from invading the chute 211 and affecting the smooth sliding of the guiding block 42 in the spiral groove 311. In other embodiments, the chute 211 can also be opened on the lifting conduit 4, and the slider 43 can also be arranged on the U-shaped baffle 21.

[0056] Referring to Figure 1 and Figure 3 , in this embodiment, the segment conduits 5 are generally made of thick-walled steel pipes, and both the inner and outer surfaces are polished to reduce the frictional resistance with the concrete; there are multiple segment conduits 5, and the specific number used needs to be flexibly adjusted according to the actual pile construction requirements; the multiple segment conduits 5 are connected end to end by screw threads, and the feeding end of the first segment conduit 5 is also connected and communicated with the discharging end of the lifting conduit 4 by screw threads. When the lifting conduit 4 rises or falls, the segment conduits 5 can be driven to rise or fall synchronously, and the discharging end of the last segment conduit 5 extends to the bottom of the pile hole; such a design can quickly disassemble or connect the segment conduits 5 and flexibly adjust the length of the segment conduits 5 to meet the construction requirements of pile holes with different depths.

[0057] The control assembly 6 includes a flowmeter 61 and a control host 62. The flowmeter 61 is arranged at the mud discharge port of the pile to measure the amount of mud discharged from the pile hole; the control host 62 is a micro control computer with an operating system and control software installed inside; the control host 62 is electrically connected to the driving member 32 and the flowmeter 61. The driving member 32 can be controlled by the control host 62 to drive the lifting conduit 4 to rise and fall; the control host 62 can calculate the pouring height of the concrete in the pile hole in real time according to the measured value of the flowmeter 61 and synchronously control the lifting of the lifting conduit 4, so as to keep the depth of the segment conduits 5 buried in the concrete constant when pouring concrete in the pile hole.

[0058] Referring to Figure 1 and Figure 2 , in this embodiment, a limiting convex block 51 is provided on the outer wall of the segment conduit 5, and the limiting convex block 51 is a convex structure on the segment conduit 5; the bridge pile foundation rotary drilling and pouring device further includes a limiting assembly 8, and the limiting assembly 8 includes a telescopic driving member 81 and two limiting plates 82. The two limiting plates 82 are arranged oppositely and are both slidably arranged on the mounting frame 1, and the sliding direction of the limiting plate 82 is perpendicular to the central axis of the segment conduit 5; the telescopic driving member 81 can be selected from one of a pneumatic push rod, an electric push rod, and a hydraulic push rod. The number of telescopic driving members 81 is four, and each limiting plate 82 is equipped with two telescopic driving members 81; one end of the telescopic driving member 81 is fixed on the mounting frame 1, and the other end is connected to the limiting plate 82. The telescopic driving member 81 can drive the two limiting plates 82 to move away from or close to each other.

[0059] When the two limiting plates 82 approach and abut against each other, a circular hole matching the shape of the segment conduit 5 is formed between the two limiting plates 82. At this time, the two limiting plates 82 can respectively abut against the outer walls on both sides of the segment conduit 5 to position the segment conduit 5 and prevent the segment conduit 5 from shaking. At the same time, the bottom surface of the limiting protrusion 51 can abut against the top surface of the limiting plate 82, so as to prevent the segment conduit 5 from falling. When the two limiting plates 82 move away from each other, the limiting plate 82, the limiting protrusion 51 and the segment conduit 5 do not interfere with each other.

[0060] Preferably, when the lifting conduit 4 rises to the highest position, the height from the bottom end of the lifting conduit 4 to the top end of the pile hole is greater than the length of the segment conduit 5, so that the segment conduit 5 can be smoothly taken out of the pile hole when being removed. In other embodiments, the number of the limiting plates 82 can be adjusted as needed; the telescopic driving member 81 can also be one of a double-headed pneumatic push rod, a double-headed electric push rod, and a double-headed hydraulic push rod. By fixing the main body of the telescopic driving member 81 on the mounting frame 1 and connecting the two output ends of the telescopic driving member 81 to the two limiting plates 82 respectively, the two limiting plates 82 can be made to approach or move away from each other.

[0061] Refer to Figure 1 , in this embodiment, a connecting pipe 9 is provided between the lifting conduit 4 and the first segment conduit 5; the connecting pipe 9 is a stainless steel metal pipe and has a funnel-shaped appearance; the larger-opening end of the connecting pipe 9 is connected and communicated with the discharge end of the lifting conduit 4 by thread, and the smaller-opening end of the connecting pipe 9 is also connected and communicated with the feeding end of the first segment conduit 5 by thread; in this way, connecting pipes 9 of different sizes can be replaced according to actual construction requirements, so that the lifting conduit 4 can be connected to segment conduits 5 of different diameters. This flexibility enables the entire perfusion device to be applied in the construction of piles of various specifications, improving the versatility and application range of the equipment. In other embodiments, the connecting pipe 9 can also be made of a high-strength rubber hose or a corrugated pipe, which has good flexibility and pressure resistance and can directly provide a certain buffering and shock-absorbing effect for the lifting conduit 4 and the segment conduit 5.

[0062] The implementation principle of Embodiment 1 is as follows: The bridge pile foundation rotary drilling and grouting device provided by this application integrates multiple functional modules, achieving the effects of simplifying the removal steps of the sectional conduit 5, reducing the non-uniformity during concrete diffusion, and improving the construction efficiency and quality of the pile body. Specifically, the design of the mounting frame 1 ensures the stability and safety of the entire device, especially preventing deviation or overturning during the pile foundation construction process. The vibrating assembly 3, through the effective cooperation of the rotating sleeve 31 and the vibrating rod 33, can not only fully stir the concrete in the hopper 2 but also effectively remove the air in the concrete, avoiding the occurrence of floating slurry and stone settlement, thus significantly improving the quality of the pile body concrete. The design of the lifting conduit 4 adopts the combination of the spiral groove 311 and the guiding block 42, enabling the lifting conduit 4 to move smoothly up and down driven by the rotating sleeve 31. This not only simplifies the lifting steps of the sectional conduit 5 but also greatly reduces the labor input and improves the construction efficiency. The multi-root design and threaded connection method of the sectional conduit 5 enable the total length of the sectional conduit 5 to be flexibly adjusted, suitable for pile hole construction at different depths. Moreover, the design of the lifting conduit 4 and the sectional conduit 5 eliminates the need to move the hopper 2 when disassembling and assembling the sectional conduit 5, avoiding position errors during the reset of the hopper 2 and simplifying the operation steps. The control assembly 6, through the intelligent linkage of the flowmeter 61 and the control host 62, can real-time monitor the pouring height of the concrete in the pile hole and automatically adjust the lifting speed of the lifting conduit 4, causing the sectional conduit 5 to rise as the concrete pouring height increases, ensuring that the depth of the sectional conduit 5 buried in the concrete remains constant. This solves the problem in the traditional method that the concrete diffuses unevenly during the upward displacement process in the pile hole, prone to floating slurry or stone settlement, which affects the quality of the pile body. The limiting assembly 8, through the cooperation of the limiting plate 82 and the telescopic driving member 81, ensures the accuracy and safety of the sectional conduit 5 during construction or disassembly and assembly.

[0063] In summary, the bridge pile foundation rotary drilling and grouting device of this application integrates multiple innovative technologies, greatly improving the efficiency and quality of bridge pile foundation construction, and has high practical value.

[0064] Embodiment 2

[0065] Embodiment 2 of this application also discloses a bridge pile foundation construction method using a bridge pile foundation rotary drilling and grouting device as described above, which includes the following steps:

[0066] Step 1: Fix the mounting frame 1 above the pile hole, connect multiple sectional conduits 5 end to end, connect the first sectional conduit 5 with the lifting conduit 4, extend the last sectional conduit 5 to a predetermined position at the bottom of the pile hole, and calibrate the relative position of the sectional conduit 5 and the pile hole.

[0067] Step 2: Use the ball pressing method to pour the first batch of concrete into the hopper 2, start the vibrating rod 33 to vibrate the concrete in the hopper 2. The amount of the first batch of concrete should be such that the depth of the end-section conduit 5 buried in the concrete is at least 1 meter.

[0068] Step 3: Continuously pour concrete into the hopper 2, and start the control component 6 and the driving member 32. The control component 6 controls the synchronous lifting of the lifting conduit 4 according to the real-time concrete pouring depth in the pile hole so that the depth of the section conduit 5 buried in the concrete remains constant all the time. Stop pouring concrete into the hopper 2 when the lifting conduit 4 is lifted to the highest position.

[0069] Step 4: Remove the first section conduit 5 connecting the lifting conduit 4, and lower the lifting conduit 4 to the next section conduit 5 and connect them.

[0070] Step 5: Repeat Step 3 and Step 4 until the pile body pouring is completed.

[0071] The above are all the preferred embodiments of this application. The protection scope of this application is not limited hereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A bridge pile foundation rotary drilling and pouring device, characterized in that: include: A mounting frame (1), the mounting frame (1) being fixedly arranged above the pile hole, and a hopper (2) for holding concrete being mounted on the mounting frame (1); A vibrating assembly (3), the vibrating assembly (3) comprising a rotating sleeve (31), a driving member (32) and a vibrating rod (33); the rotating sleeve (31) is rotatably mounted on a mounting frame (1); the driving member (32) is used to drive the rotating sleeve (31) to rotate; the vibrating rod (33) is mounted on the rotating sleeve (31) and is used to vibrate concrete in the hopper (2); A lifting duct (4), wherein the lifting duct (4) is slidably arranged on the hopper (2), and a material drop trough (41) is provided on the lifting duct (4), and concrete in the hopper (2) can flow into the lifting duct (4) through the material drop trough (41); when the rotating sleeve (31) rotates, it can drive the lifting duct (4) to rise or fall in the hopper (2); a U-shaped baffle (21) is provided on the hopper (2), and the U-shaped baffle (21) can seal and cover the portion of the material drop trough (41) located outside the hopper (2); A segmented conduit (5), wherein a plurality of segmented conduits (5) are provided; the plurality of segmented conduits (5) are connected end to end by a detachable connection, and the feed end of the first segmented conduit (5) is connected to the discharge end of the lifting conduit (4) by a detachable connection, and the discharge end of the last segmented conduit (5) extends to the bottom of the pile hole; when the lifting conduit (4) rises or falls, it can synchronously drive the segmented conduit (5) to rise or fall; A control component (6) is electrically connected to the driving member (32) to control the lifting and lowering of the lifting guide tube (4). The control component (6) can synchronously control the lifting of the lifting guide tube (4) according to the real-time pouring height of concrete in the pile hole so that the depth of the segment guide tube (5) buried in the concrete is always kept constant.

2. A bridge pile foundation rotary drilling and grouting device according to claim 1, characterized in that: The control component (6) comprises a flow meter (61) and a control host (62); the flow meter (61) is used to detect the flow rate of mud discharged from the pile hole when pouring the pile body; the control host (62) is electrically connected to the driving member (32) and the flow meter (61); the lifting and lowering of the lifting conduit (4) can be controlled by the control host (62); the control host (62) can calculate the pouring height of concrete in the pile hole in real time according to the value measured by the flow meter (61) and synchronously control the lifting of the lifting conduit (4), so that the depth of the segment conduit (5) buried in the concrete is always kept constant.

3. A bridge pile foundation rotary drilling and grouting device according to claim 2, characterized in that: A spiral groove (311) is provided on the inner wall of the rotating sleeve (31), a guide block (42) is provided on the outer wall of the lifting guide tube (4), the lifting guide tube (4) is inserted into the rotating sleeve (31), and one end of the guide block (42) is slidably disposed in the spiral groove (311) so that the lifting guide tube (4) and the rotating sleeve (31) are connected in a spiral rotation manner.

4. A bridge pile foundation rotary drilling and grouting device according to claim 3, characterized in that: The U-shaped baffle (21) is provided with a slide groove (211), the extension direction of the slide groove (211) is parallel to the lifting direction of the lifting tube (4), and a sliding block (43) is provided on the outer wall of the lifting tube (4), and one end of the sliding block (43) is slidably abutted in the slide groove (211).

5. The bridge pile foundation rotary drilling and grouting device according to claim 3, characterized in that: The guide block (42) is also provided with a roller (7), and the roller (7) is in rolling contact with the groove wall of the spiral groove (311).

6. A bridge pile foundation rotary drilling and grouting device according to claim 1, characterized in that: The segmented conduit (5) is provided with a limiting protrusion (51) on the outer wall thereof; the segmented conduit (5) further comprises a limiting assembly (8), the limiting assembly (8) comprising a telescopic driving member (81) and at least two limiting plates (82); the two limiting plates (82) are arranged opposite to each other, and the two limiting plates (82) are both slidably arranged on the mounting frame (1); the telescopic driving member (81) is used to make the two limiting plates (82) move away from or closer to each other; when the two limiting plates (82) move closer to each other, the two limiting plates (82) can respectively abut against the outer walls of both sides of the segmented conduit (5) to position it, and the bottom surface of the limiting protrusion (51) can abut against the top surface of the limiting plate (82) to prevent the segmented conduit (5) from falling; when the two limiting plates (82) move away from each other, the two limiting plates (82) and the limiting protrusion (51) do not interfere with each other.

7. The bridge pile foundation rotary drilling and grouting device according to claim 1, characterized in that: A connecting pipe (9) is provided between the lifting duct (4) and the first segment duct (5); one end of the connecting pipe (9) is connected to the discharge end of the lifting duct (4), and the other end is connected to the feed end of the first segment duct (5).

8. The bridge pile foundation rotary drilling and grouting device according to claim 1, characterized in that: When the lifting guide tube (4) rises to the highest position, the height between the bottom end of the lifting guide tube (4) and the top end of the pile hole is greater than the length of the segment guide tube (5).

9. The bridge pile foundation rotary drilling and grouting device according to claim 1, characterized in that: A sealing gasket (10) is provided between the outer wall of the lifting duct (4) and the hopper (2).

10. A method for constructing a bridge pile foundation using a bridge pile foundation rotary drilling and grouting device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: a mounting frame (1) is fixedly installed above the pile hole, a plurality of segmented conduits (5) are connected end to end, and the first segmented conduit (5) is connected to the lifting conduit (4), and the end segmented conduit (5) is extended to a predetermined position at the bottom of the pile hole, and the relative position of the segmented conduit (5) and the pile hole is calibrated; Step 2: pouring the first batch of concrete into the hopper (2) using the ball pressing method, and starting the vibrating rod (33) to vibrate the concrete in the hopper (2). The amount of the first batch of concrete should be such that the end segment guide tube (5) is buried in the concrete to a depth of at least 1 meter; Step 3: pouring concrete into the hopper (2) continuously, and starting the control component (6) and the driving member (32); the control component (6) controls the synchronous lifting of the lifting guide tube (4) according to the real-time concrete pouring depth in the pile hole so that the depth of the segment guide tube (5) buried in the concrete is always kept constant; when the lifting guide tube (4) is lifted to the highest position, the pouring of concrete into the hopper (2) is stopped; Step 4: remove the first segment catheter (5) connected to the lifting catheter (4), so that the lifting catheter (4) descends to the next segment catheter (5) and communicates with it; Step 5: Repeat steps 3 and 4 until the pile casting is completed.

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