Rotary excavating, pipe sinking and grouting all-in-one machine and construction method

Abstract

The invention discloses a rotary excavating, pipe sinking and grouting all-in-one machine and a construction method, and relates to the technical field of rotary excavating, pipe sinking and grouting, the rotary excavating, pipe sinking and grouting all-in-one machine comprises a flat car and a bottom shell, hydraulic supporting legs are fixedly arranged at the corners of the outer surface of the flat car, the bottom shell is arranged right above the upper surface of the flat car, and a top shell is fixedly arranged on the upper surface of the bottom shell; the extrusion mechanism is used for driving the drill rod part to go deep into the rock stratum, and the extrusion mechanism is fixedly arranged on the lower surface of the bottom shell; the drilling mechanism is rotationally connected to an inner cavity of the bottom shell and an inner cavity of the top shell; the driving mechanism is used for driving the drill rod part to rotate, and the driving mechanism is arranged at the inner cavity of the bottom shell and the inner cavity of the top shell; and a water tank is fixedly arranged on the upper surface of the flat car, a water pump is fixedly arranged on the outer surface of the water tank, a communicating pipe is fixedly arranged at the water inlet end of the water pump, and the effect of grouting the rock stratum while drilling the rock stratum is achieved.

Description

Technical Field

[0001] This invention relates to the field of rotary drilling grouting technology, specifically to an integrated rotary drilling grouting machine and construction method. Background Technology

[0002] Rotary drilling grouting is a novel foundation treatment and pile foundation construction technique that combines rotary drilling with casing advancement. This technique first utilizes a rotary drilling rig equipped with a specialized casing actuator to rotate and sink a steel casing to the designed depth. Under the protection of the casing, bottom cleaning and borehole formation are completed, effectively solving the problem of borehole collapse under complex geological conditions such as loose strata, quicksand, and soft soil. After borehole formation, a reinforcing cage and grouting pipe are lowered through the center of the casing, and the pile body concrete is poured using the tremie method. After concrete pouring, high-pressure grouting is applied to the pile tip and sides through the pre-embedded grouting pipe, allowing the grout to penetrate and fill the pores of the surrounding soil and the gaps at the pile-soil interface, significantly improving the pile side friction and pile tip bearing capacity.

[0003] In rotary drilling rigs, the inability to directly inject grout from the drill rod is a significant operational limitation. This is mainly because the drill rod of a rotary drilling rig is a hollow helical rod or friction drill rod, whose core function is to transport the drill bit to deep underground layers to complete soil extraction and hole formation through rotation, rather than serving as a permanent grouting channel. Summary of the Invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a rotary drilling and grouting integrated machine, comprising a flatbed truck and a bottom shell, wherein hydraulic outriggers are fixed at the corners of the outer surface of the flatbed truck, the bottom shell is located directly above the upper surface of the flatbed truck, and a top shell is fixed on the upper surface of the bottom shell; A pressing mechanism for driving drill pipe components deep into rock formations, the pressing mechanism being fixed to the lower surface of the bottom shell; A drilling mechanism, which is rotatably connected to the inner cavity of the bottom shell and the top shell; A drive mechanism for driving the drill pipe assembly to rotate, the drive mechanism being disposed within the cavities of the bottom and top shells; A water tank is fixed to the upper surface of the flatbed, and a water pump is fixed to the outer surface of the water tank. A connecting pipe is fixed to the water inlet end of the water pump. The connecting pipe passes through the outer surface of the water tank and extends to the bottom surface of the inner cavity of the water tank. A flexible hose is fixed to the water outlet end of the water pump. The end of the flexible hose extends to the top of the top shell.

[0005] Preferably, a fixed plate is fixed on the upper surface of the flatbed, a support frame is fixed on the upper surface of the fixed plate, a first rolling bearing is fixed in the inner cavity of the support frame, a rotating frame is fixed in the inner ring of the first rolling bearing, the rotating frame is fixed on the lower surface of the bottom shell, a turntable is provided on the inner wall of the rotating frame, and the output end of the turntable is fixed on the bottom surface of the inner cavity of the support frame.

[0006] Preferably, the extrusion mechanism includes a fixed frame and a track rod. The fixed frame is fixed to the lower surface of the bottom shell, and a first stepper motor is fixed to the inner wall of the fixed frame. A lead screw is installed at the output end of the first stepper motor through a coupling. The track rod is fixed to the lower surface of the bottom shell and is located directly above the lead screw. The end of the lead screw is connected to the end of the track rod through a connecting plate.

[0007] Preferably, a screw nut is threaded onto the outer surface of the screw rod, a connecting block is fixed to the upper surface of the screw nut, a sliding sleeve is fixed to the upper surface of the connecting block, a moving tube is fixed to the upper surface of the sliding sleeve, a second rolling bearing is fixed to the inner wall of the moving tube, an extrusion head is fixed to the inner ring of the second rolling bearing, a strip-shaped hole is opened in the inner cavity of the extrusion head, an extrusion tube is fixed to the inner wall of the moving tube, and the end of the extrusion tube is extruded and adapted to the inner cavity of the extrusion head.

[0008] Preferably, the drilling mechanism includes a rotating rod fixed to the inner wall of the extrusion head. The rotating rod is a hollow metal tube. The outer surface of the rotating rod is symmetrically provided with track grooves. Several evenly distributed water-permeable holes are provided in the track grooves on the outer surface of the rotating rod. The track grooves and the strip-shaped holes are on the same straight line.

[0009] Preferably, the end of the rotating rod away from the extrusion head is threadedly connected to a rotating tube. The spiral tightening direction of the rotating tube to the rotating rod is the same as the rotation direction of the rotating rod. A drill bit is fixedly installed at one end of the rotating tube pressing the rotating rod. A spiral blade is fixedly installed on the outer surface of the rotating tube. Several evenly distributed drainage ports are penetrating the outer surface of the rotating tube. The driving mechanism includes a rotating box and a limiting tube. The rotating box is rotatably connected in the inner cavity of the bottom shell and the top shell. The limiting tube symmetrically penetrates both ends of the bottom shell.

[0010] Preferably, a third rolling bearing is fixed to the inner wall of the limiting tube, the inner ring of the third rolling bearing is fixed to the outer surface of the rotating box, a second stepper motor is fixed to the top surface of the inner cavity of the top shell, a drive wheel is installed at the output end of the second stepper motor through a coupling, a driven wheel is fixed to the outer surface of the rotating box, and the driven wheel is connected to the drive wheel through a belt.

[0011] Preferably, a first package box is fitted onto the outer surface of the rotating box. The first package box is fitted onto the outer surface of the rotating box via a fourth rolling bearing. A water inlet pipe penetrates the upper surface of the first package box, and the top end of the water inlet pipe penetrates the inner wall of the top shell. The top end of the water inlet pipe is fixed to the end of the flexible hose away from the water pump. A water inlet hole is opened on one side of the outer surface of the rotating box located in the inner cavity of the first package box. A second package box is fitted onto the outer surface of the rotating box. A discharge pipe penetrates the lower surface of the second package box. A control valve is provided in the inner cavity of the discharge pipe. The discharge pipe penetrates the inner wall of the bottom shell. A discharge hole is opened on one side of the outer surface of the rotating box located in the inner cavity of the second package box.

[0012] Preferably, the rotating rod is located in the inner cavity of the rotating box, and the inner wall of the rotating box is symmetrically fixed with track bars, which are frictionally adapted to the track grooves opened on the outer surface of the rotating rod.

[0013] A method for grouting construction of rotary drilling pipes includes the following steps: Step 1: Move the flatbed truck to the construction site, activate the hydraulic outriggers to extend downwards, and lift the flatbed truck to a stable state to ensure that the equipment is level. Drive the rotating mechanism to rotate the bottom and top shells horizontally, adjust the azimuth angle of the drilling mechanism, and make the vertical projection of the drilling mechanism accurately aligned with the preset center point of the pile hole. After the alignment is completed, lock it and prepare for drilling operations. Step 2: Start the drive mechanism to drive the rotating box to rotate at high speed. The rotating box cooperates with the drilling mechanism to drive the drilling mechanism to rotate synchronously. At the same time, start the extrusion mechanism to drive the drilling mechanism to move towards the center point of the pile hole, apply thrust to the rotating drill rod, and realize rotary drilling. During the drilling process, the water pump can be started as needed to send water from the water tank into the inner cavity of the drilling mechanism through the hose and drive mechanism. The water flow cools and lubricates the end of the drilling mechanism and carries some rock cuttings out of the hole. Step 3: After the drilling mechanism has drilled to the designed depth, stop the extrusion mechanism and keep the rotating box rotating. Start the grouting operation, start the water pump, and send the cement slurry into the inner cavity of the drilling mechanism through the hose. The slurry flows into the end of the drilling mechanism through the inner cavity. As the slurry is continuously injected, start the extrusion mechanism in reverse to slowly pull out the drilling mechanism. During the extraction process, the rotating box continues to rotate, driving the drilling mechanism to be slowly pulled out. Under the pressure, the slurry continuously fills the space left after the drill bit is lifted, forming a dense grouting pile body. Step 4: After completing the grouting of the designed pile length, stop the grouting and water pump supply, continue to reverse drive the squeezing mechanism until it returns to the initial position, while keeping the second stepper motor rotating, and slowly pull the drill rod out of the grouted pile hole.

[0014] This invention provides an integrated rotary drilling and grouting machine and construction method. It has the following beneficial effects: I. The rotary drilling grouting machine and construction method, by setting up an extrusion mechanism, is the "axial feed core" of the device, which is responsible for driving the drill rod component to penetrate into the rock layer, and lifting the drill rod in the reverse direction after grouting is completed, so as to realize bidirectional motion control of drilling and lifting.

[0015] II. The rotary drilling grouting machine and construction method, by setting up a drilling mechanism, is the "drilling execution unit" of the device. It consists of a drill rod, spiral blades and drill bit. Under the combined action of rotation and axial pressure, it breaks up the rock and soil to form a pile hole, which also serves as a grouting channel.

[0016] Third, the rotary drilling grouting machine and construction method, by setting up a drive mechanism, is the "rotational power core" of the device. It drives the drilling mechanism to rotate at high speed, provides torque for drilling, and maintains rotation during grouting and drilling, ensuring uniform filling of grout.

[0017] IV. This rotary drilling and grouting integrated machine and construction method converts rotary motion into linear motion by using a lead screw and nut, which works in conjunction with the lead screw. A connecting block and sliding sleeve transmit the motion of the lead screw and nut to the moving pipe. The sliding sleeve slides in conjunction with the track rod to ensure smooth movement of the moving pipe. The moving pipe is the actuating component of the extrusion mechanism, housing the extrusion head and extrusion tube. A second rolling bearing allows the extrusion head to rotate freely within the moving pipe while bearing axial thrust. The extrusion head has a slotted cavity that mates with the track groove of the drilling mechanism. The extrusion tube moves with the moving pipe, its end fitting into the extrusion head's cavity, providing further clamping force after the extrusion head is in place, thus achieving axial feed of the drill rod.

[0018] V. This rotary drilling and grouting integrated machine and construction method utilizes a track bar fixed to the inner wall of the rotating box, which slides in conjunction with the track groove on the outer surface of the rotating rod. This design allows the rotational torque of the rotating box to be transmitted to the rotating rod, driving it to rotate synchronously; simultaneously, it allows the rotating rod to slide axially within the rotating box, realizing the feed or lifting motion driven by the extrusion mechanism. This decoupling design of rotation and axial movement ensures coordination during drilling and lifting. Furthermore, as the rotating rod moves, the track bar blocks or opens the permeable holes on the track groove surface, thereby increasing the water injection pressure after the drill rod has fully penetrated the rock strata. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of a rotary drilling and grouting integrated machine according to the present invention; Figure 2 This is a schematic diagram of the unfolded structure of a rotary drilling and grouting integrated machine according to the present invention; Figure 3 This is a partial structural schematic diagram of a rotary drilling and grouting integrated machine according to the present invention; Figure 4 This is a schematic diagram of the extrusion mechanism of the present invention; Figure 5 This is a schematic cross-sectional view of the extrusion mechanism of the present invention; Figure 6 This is a partial cross-sectional structural diagram of the extrusion mechanism of the present invention; Figure 7 This is a schematic diagram of the drilling mechanism structure of the present invention; Figure 8 This is a partial structural diagram of the drilling mechanism of the present invention; Figure 9 This is a schematic diagram of the drive mechanism structure of the present invention; Figure 1 0 is a cross-sectional structural diagram of the drive mechanism of the present invention.

[0020] In the diagram: 1. Flatbed trolley; 2. Hydraulic outriggers; 3. Fixed plate; 4. Bottom shell; 5. Top shell; 6. Extrusion mechanism; 61. Fixed frame; 62. First stepper motor; 63. Lead screw; 64. Track rod; 65. Lead screw nut; 66. Connecting block; 67. Sliding sleeve; 69. Moving tube; 610. Extrusion tube; 611. Second rolling bearing; 612. Extrusion head; 613. Strip hole; 7. Drilling mechanism; 71. Rotating rod; 72. Track groove; 73. Water permeable hole; 74. Rotating tube; 75. Spiral blade; 76. Drill bit; 77. Discharge... 8. Water inlet; 8. Drive mechanism; 81. Rotating box; 82. Limiting pipe; 83. Third rolling bearing; 84. Track bar; 85. Second stepper motor; 86. Driving wheel; 87. Driven wheel; 88. Belt; 89. First parcel box; 810. Fourth rolling bearing; 811. Water inlet pipe; 812. Water inlet hole; 813. Second parcel box; 814. Discharge pipe; 815. Discharge hole; 9. Water tank; 10. Connecting pipe; 11. Water pump; 12. Hose; 13. Support frame; 14. First rolling bearing; 15. Rotating frame; 16. Turntable. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0022] like Figures 1-10As shown, this invention provides a technical solution: a rotary drilling and grouting integrated machine, comprising a flatbed trolley 1 and a bottom shell 4. Hydraulic outriggers 2 are fixed at the corners of the outer surface of the flatbed trolley 1. The bottom shell 4 is positioned directly above the upper surface of the flatbed trolley 1, and a top shell 5 is fixed to the upper surface of the bottom shell 4. By setting up the flatbed trolley 1 and the hydraulic outriggers 2, a movable construction platform is formed. During construction, the hydraulic outriggers 2 extend downwards to lift and level the entire flatbed trolley 1, ensuring the stability of the equipment under complex terrain conditions. They can be retracted for easy relocation and transportation. By setting up the bottom shell 4 and the top shell 5, the outer shell and support structure of the core components of drilling and grouting are formed, internally accommodating the drive mechanism 8 and the drilling mechanism 7, and providing them with a precise installation reference. The extrusion mechanism 6 is used to drive the drill rod assembly to penetrate deeper into the rock formation. The extrusion mechanism 6 is fixed to the lower surface of the bottom shell 4. By setting the extrusion mechanism 6, it is the "axial feed core" of the device, responsible for driving the drill rod assembly to penetrate deeper into the rock formation and lifting the drill rod in the reverse direction after grouting is completed, realizing bidirectional motion control of drilling and lifting. The drilling mechanism 7 is rotatably connected to the inner cavity of the bottom shell 4 and the top shell 5. The drilling mechanism 7 is the "drilling execution unit" of the device, which consists of a drill rod, a spiral blade 75 and a drill bit 76. Under the combined action of rotation and axial pressure, it breaks the rock and soil to form a pile hole, and at the same time serves as a grouting channel. The drive mechanism 8 is used to drive the drill rod assembly to rotate. The drive mechanism 8 is located in the inner cavity of the bottom shell 4 and the top shell 5. By setting the drive mechanism 8, it is the "rotational power core" of the device, driving the drilling mechanism 7 to rotate at high speed, providing torque for drilling, and maintaining rotation during grouting and drill lifting to ensure uniform grout filling. A water tank 9 is fixed to the upper surface of the flatbed trolley 1. A water pump 11 is fixed to the outer surface of the water tank 9. A connecting pipe 10 is fixed to the water inlet end of the water pump 11, which penetrates the outer surface of the water tank 9 and extends to the bottom surface of the inner cavity of the water tank 9. A flexible hose 12 is fixed to the water outlet end of the water pump 11, with the end of the hose 12 extending directly above the top shell 5. By setting up the water tank 9, connecting pipe 10, water pump 11, and hose 12, a water supply and grouting system is formed. The water tank 9 stores clean water and cement slurry; the water pump 11 draws liquid from the bottom of the water tank 9 through the connecting pipe 10 and delivers it to the inner cavity of the drilling mechanism 7 through the hose 12 for cooling and lubrication during drilling or for grout injection during grouting.

[0023] A fixed plate 3 is fixed to the upper surface of the flatbed trolley 1. A support frame 13 is fixed to the upper surface of the fixed plate 3. A first rolling bearing 14 is fixed to the inner cavity of the support frame 13. A rotating frame 15 is fixed to the inner ring of the first rolling bearing 14. The rotating frame 15 is fixed to the lower surface of the bottom shell 4. A turntable 16 is provided on the inner wall of the rotating frame 15. The output end of the turntable 16 is fixed to the bottom surface of the inner cavity of the support frame 13. By setting up the fixed plate 3, the support frame 13, the first rolling bearing 14, and the rotating frame 15, a horizontal rotation support system is formed between the bottom shell 4 and the flatbed trolley 1. The first rolling bearing 14 allows the rotating frame 15 to rotate smoothly within the support frame 13, driving the entire drilling unit to rotate horizontally. The turntable 16 is a horizontal rotation drive unit. Its output end is fixed to the support frame 13, and the shell is connected to the rotating frame 15. It drives the entire drilling unit to rotate horizontally, precisely adjusting the azimuth angle of the drilling mechanism 7 so that the drill bit 76 is aligned with the center point of the preset pile hole.

[0024] The extrusion mechanism 6 includes a fixed frame 61 and a track rod 64. The fixed frame 61 is fixed to the lower surface of the base shell 4. A first stepper motor 62 is fixed to the inner wall of the fixed frame 61. A lead screw 63 is mounted on the output end of the first stepper motor 62 via a coupling. The track rod 64 is fixed to the lower surface of the base shell 4 and is located directly above the lead screw 63. The end of the lead screw 63 is connected to the end of the track rod 64 via a connecting plate. The fixed frame 61 provides a stable mounting platform for the first stepper motor 62. The first stepper motor 62 is the power source of the extrusion mechanism 6, and its speed and direction are precisely controllable, allowing adjustment of the rotation direction and speed of the lead screw 63 according to drilling or lifting process requirements. The lead screw 63 converts the rotational motion of the motor into the linear motion of the lead screw nut 65. The track rod 64 provides linear guidance for subsequent sliding components and is arranged parallel to the lead screw 63 to ensure smooth movement. The end of the lead screw 63 and the end of the track rod 64 are connected via a connecting plate to form a stable frame structure.

[0025] A screw nut 65 is threaded onto the outer surface of the lead screw 63. A connecting block 66 is fixed to the upper surface of the lead screw nut 65, a sliding sleeve 67 is fixed to the upper surface of the connecting block 66, and a moving tube 69 is fixed to the upper surface of the sliding sleeve 67. A second rolling bearing 611 is fixed to the inner wall of the moving tube 69, and a pressing head 612 is fixed to the inner ring of the second rolling bearing 611. A strip-shaped hole 613 is opened in the inner cavity of the pressing head 612, and a pressing tube 610 is fixed to the inner wall of the moving tube 69. The end of the pressing tube 610 is pressed and adapted to the inner cavity of the pressing head 612. By setting the lead screw nut 65, which cooperates with the lead screw 63, the rotational motion is converted into linear motion. By setting the connecting block 66 and the sliding sleeve 67, the motion of the lead screw nut 65 is transmitted to the moving tube 69. The sliding sleeve 67 slides with the track rod 64 to ensure the smooth movement of the moving tube 69. The moving tube 69 is the actuating component of the pressing mechanism 6, and it houses the pressing head 612 and the pressing tube 610. By providing a second rolling bearing 611, the extrusion head 612 can rotate freely within the moving tube 69 while simultaneously bearing axial thrust. The extrusion head 612 has a strip-shaped hole 613 in its inner cavity that mates with the track groove 72 of the drilling mechanism 7. The extrusion tube 610 moves with the moving tube 69, its end fitting into the inner cavity of the extrusion head 612, providing further clamping force after the extrusion head 612 is advanced into position, thus achieving axial feed of the drill rod.

[0026] The drilling mechanism 7 includes a rotating rod 71, which is fixed to the inner wall of the extrusion head 612. The rotating rod 71 is a hollow metal tube, and its outer surface is symmetrically provided with track grooves 72. Several evenly distributed water-permeable holes 73 are formed in the track grooves 72, and the track grooves 72 are aligned with the strip-shaped holes 613. The rotating rod 71 is the core transmission and fluid transport component of the drilling mechanism 7. Its hollow metal tube structure transmits rotational torque and axial pressure, and also serves as a transport channel for slurry and cooling water. The track grooves 72, in conjunction with the track bars 84 of the drive mechanism 8 and the strip-shaped holes 613 of the extrusion head 612, transmit rotational torque while allowing axial sliding. The water-permeable holes 73, located in the track grooves 72, allow slurry or cooling water from the inner cavity of the rotating box 81 to enter the inner cavity of the rotating rod 71, providing cooling, lubrication, or grouting for the drill bit 76. The track groove 72 and the strip hole 613 are aligned in a straight line.

[0027] A rotating tube 74 is threadedly connected to the end of the rotating rod 71 away from the extrusion head 612. The spiral tightening direction of the rotating tube 74 connected to the rotating rod 71 is the same as the rotation direction of the rotating rod 71. A drill bit 76 is fixedly mounted on one end of the rotating tube 74 pressing against the rotating rod 71. A spiral blade 75 is fixedly mounted on the outer surface of the rotating tube 74. Several evenly distributed drainage ports 77 penetrate the outer surface of the rotating tube 74. The drive mechanism 8 includes a rotating box 81 and a limiting tube 82. The rotating box 81 is rotatably connected to the inner cavity of the bottom shell 4 and the top shell 5. The limiting tube 82 symmetrically penetrates both ends of the bottom shell 4. By setting the rotating tube 74 to be threadedly connected to the rotating rod 71, and tightening it in the same direction as the rotation direction of the rotating rod 71, it is ensured that the threaded connection becomes tighter and tighter as the rotation proceeds during the rotary drilling process, preventing disengagement. At the same time, an anti-disengagement mechanism is integrated inside to prevent the drill bit 76 from falling off. The drill bit 76 is a tool for directly breaking rock and soil, and its shape and material are selected according to the geological conditions. By incorporating spiral blades 75 that rotate with the rotating tube 74, the broken rock cuttings are conveyed upwards, aiding in slag removal. Drainage outlets 77, evenly distributed on the outer surface of the rotating tube 74, are used to uniformly spray the slurry or cooling water conveyed from the inner cavity of the rotating rod 71 into the drilling area. A rotating box 81, the rotary output component of the drive mechanism 8, engages internally with the rotating rod 71 to transmit rotational torque. Limiting tubes 82, symmetrically penetrating both ends of the bottom shell 4, provide rotational support and axial limitation for the rotating box 81.

[0028] A third rolling bearing 83 is fixed to the inner wall of the limiting tube 82. The inner ring of the third rolling bearing 83 is fixed to the outer surface of the rotating box 81. A second stepper motor 85 is fixed to the top surface of the inner cavity of the top shell 5. The output end of the second stepper motor 85 is connected to a drive wheel 86 via a coupling. A driven wheel 87 is fixed to the outer surface of the rotating box 81. The driven wheel 87 is connected to the drive wheel 86 via a belt 88. By setting the third rolling bearing 83, the rotating box 81 is supported to rotate smoothly within the limiting tube 82 and bear radial loads. The second stepper motor 85 is the rotational power source of the drive mechanism 8, and its speed and direction are precisely controllable. By setting the drive wheel 86, belt 88, and driven wheel 87, a flexible transmission system is formed, which smoothly transmits the power of the second stepper motor 85 to the rotating box 81. The belt 88 transmission has the functions of buffering, vibration reduction, and overload protection.

[0029] A first package box 89 is fitted onto the outer surface of the rotating box 81. The first package box 89 is fitted onto the outer surface of the rotating box 81 via a fourth rolling bearing 810. A water inlet pipe 811 passes through the upper surface of the first package box 89. The top end of the water inlet pipe 811 passes through the inner wall of the top shell 5. The top end of the water inlet pipe 811 is fixed to the end of the flexible hose 12 away from the water pump 11. A water inlet hole 812 is provided on one side of the outer surface of the rotating box 81 located in the inner cavity of the first package box 89. A second package box 813 is fitted onto the outer surface of the rotating box 81. A discharge pipe 814 passes through the lower surface of the second package box 813. A control valve is provided in the inner cavity of the discharge pipe 814. The discharge pipe 814 passes through the inner wall of the bottom shell 4. A discharge hole 815 is provided on one side of the outer surface of the rotating box 81 located in the inner cavity of the second package box 813. By setting up a first packing box 89 and a fourth rolling bearing 810, a fixed water inlet cavity is formed on the outer surface of the rotating box 81. The fourth rolling bearing 810 allows the rotating box 81 to rotate within the packing box. A water inlet pipe 811 introduces the slurry or cooling water delivered by the hose 12 into the inner cavity of the first packing box 89. A water inlet hole 812 is provided on the outer surface of the rotating box 81. When the rotating box 81 rotates, the water inlet hole 812 periodically communicates with the inner cavity of the first packing box 89, introducing liquid into the inner cavity of the rotating box 81, thus achieving dynamic liquid supply to the rotating component. A second packing box 813 and a discharge pipe 814 form a slag discharge channel. Rock cuttings and excess slurry generated during drill rod extraction enter the second packing box 813 through the discharge hole 815 and are discharged through the discharge pipe 814. The discharge speed can be adjusted by a control valve.

[0030] A rotating rod 71 is located inside the rotating box 81. A track bar 84 is symmetrically fixed to the inner wall of the rotating box 81, and this track bar 84 is frictionally fitted with a track groove 72 on the outer surface of the rotating rod 71. By setting the track bar 84, it is fixed to the inner wall of the rotating box 81 and slides in contact with the track groove 72 on the outer surface of the rotating rod 71. This design allows the rotational torque of the rotating box 81 to be transmitted to the rotating rod 71, driving it to rotate synchronously; at the same time, it allows the rotating rod 71 to slide axially within the rotating box 81, realizing the feed or lifting motion driven by the extrusion mechanism 6. This decoupling design of rotation and axial movement ensures the coordination of the drilling and lifting processes. Furthermore, when the rotating rod 71 moves, the track bar 84 blocks or opens the water-permeable holes 73 on the surface of the track groove 72, thereby increasing the water injection pressure after the drill rod has fully penetrated the rock formation.

[0031] A method for grouting construction of rotary drilling pipes includes the following steps: Step 1: Move the flatbed truck 1 to the construction site, start the hydraulic outriggers 2 to extend downwards, and lift the flatbed truck 1 to a stable state to ensure that the equipment is level. Drive the rotating mechanism to drive the bottom shell 4 and top shell 5 to rotate horizontally as a whole. Adjust the azimuth angle of the drilling mechanism 7 so that the vertical projection of the drilling mechanism 7 is accurately aligned with the preset center point of the pile hole. After the alignment is completed, lock it and prepare for drilling operation. Step 2: Start the drive mechanism 8 to drive the rotating box 81 to rotate at high speed. The rotating box 81 cooperates with the drilling mechanism 7 to drive the drilling mechanism 7 to rotate synchronously. At the same time, start the extrusion mechanism 6 to drive the drilling mechanism 7 to move towards the center point of the pile hole, apply the thrust to the rotating drill rod, and realize rotary drilling. During the drilling process, the water pump 11 can be started as needed to send the water in the water tank 9 into the inner cavity of the drilling mechanism 7 through the hose 12 and the drive mechanism 8. The water flow cools and lubricates the end of the drilling mechanism 7 and carries some rock cuttings out of the hole. Step 3: After the drilling mechanism 7 has drilled to the designed depth, stop the extrusion mechanism 6 and keep the rotating box 81 rotating to start the grouting operation. Start the water pump 11 and send the cement grout into the inner cavity of the drilling mechanism 7 through the hose 12. The grout flows into the end through the inner cavity of the drilling mechanism 7. As the grout is continuously injected, start the extrusion mechanism 6 in reverse to slowly pull out the drilling mechanism 7. During the extraction process, the rotating box 81 keeps rotating, driving the drilling mechanism 7 to be slowly pulled out. Under the pressure, the grout continuously fills the space left after the drill bit 76 is lifted, forming a dense grouting pile body. Step 4: After completing the grouting of the designed pile length, stop the grouting and water pump 11 supply water, continue to reverse drive the squeezing mechanism 6 until it returns to the initial position, while keeping the second stepper motor 85 rotating, and slowly pull the drill rod out of the grouted pile hole.

[0032] Working principle: After the flatbed truck 1 moves to the construction point, the hydraulic outriggers 2 extend downwards to lift and level the entire vehicle. The turntable 16 starts, driving the rotating frame 15 to rotate horizontally under the support of the first rolling bearing 14 of the support frame 13, which in turn drives the bottom shell 4 and the top shell 5 to rotate as a whole, so that the vertical projection of the drilling mechanism 7 is precisely aligned with the center point of the preset pile hole, completing the alignment and locking. The second stepper motor 85 of the drive mechanism 8 is activated, driving the rotating box 81 to rotate at high speed via the drive wheel 86, belt 88, and driven wheel 87. The track bar 84 on the inner wall of the rotating box 81 cooperates with the track groove 72 of the rotating rod 71, transmitting the rotational torque to the drilling mechanism 7, causing the rotating rod 71, rotating tube 74, and drill bit 76 to rotate synchronously. At the same time, the first stepper motor 62 of the extrusion mechanism 6 drives the lead screw 63 to rotate, and the lead screw nut 65 drives the connecting block 66, sliding sleeve 67, and moving tube 69 to move along the track rod 64. The moving tube 69 pushes the rotating rod 71 to feed through the extrusion head 612, realizing rotary drilling. During drilling, the water pump 11 can send water from the water tank 9 into the inner cavity of the rotating rod 71 through the hose 12, water inlet pipe 811, first package box 89, and water inlet hole 812, and spray it out through the water permeable hole 73 and drain outlet 77 to cool and lubricate the drill bit 76. After drilling to the designed depth, the extrusion mechanism 6 is stopped, while the rotating box 81 remains rotating. The water pump 11 is started and switched to cement grout. The grout enters the inner cavity of the rotating rod 71 along the same path and is injected into the bottom of the borehole through the drain port 77. As the grout continues to be injected, the extrusion mechanism 6 is started in reverse, causing the lead screw 63 to reverse, pulling out the moving pipe 69 and the extrusion head 612. The rotating rod 71 is then slowly pulled out. During the extraction process, the rotating box 81 continues to rotate, causing the drill bit 76 and the spiral blade 75 to rotate slowly, mixing the grout evenly. Under pressure, the grout continuously fills the space left after the drill bit 76 is lifted, forming a dense grouting pile. After grouting is completed for the designed pile length, grouting and water supply from pump 11 are stopped. The reverse drive of the extrusion mechanism 6 continues, moving the drilling mechanism 7 to its initial position while maintaining the rotation of the second stepper motor 85, slowly pulling the drill rod out of the grouted pile hole. The discharge pipe 814 can discharge excess rock cuttings and grout generated during drilling.

[0033] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A rotary drilling grouting machine, comprising a flatbed truck (1) and a bottom shell (4), wherein hydraulic outriggers (2) are fixedly provided at the corners of the outer surface of the flatbed truck (1), the bottom shell (4) is located directly above the upper surface of the flatbed truck (1), and a top shell (5) is fixedly provided on the upper surface of the bottom shell (4), characterized in that: The extrusion mechanism (6) is used to drive the drill rod component into the rock formation, and the extrusion mechanism (6) is fixed on the lower surface of the bottom shell (4); Drilling mechanism (7), the drill A drive mechanism (8) is used to drive the drill rod assembly to rotate. The drive mechanism (8) is located in the inner cavity of the bottom shell (4) and the top shell (5). A water tank (9) is fixed on the upper surface of the flatbed (1), and a water pump (11) is fixed on the outer surface of the water tank (9). A connecting pipe (10) is fixed at the water inlet end of the water pump (11). The connecting pipe (10) penetrates the outer surface of the water tank (9) and extends to the bottom surface of the inner cavity of the water tank (9). A flexible hose (12) is fixed at the water outlet end of the water pump (11). The flexible hole mechanism (7) is rotatably connected to the inner cavity of the bottom shell (4) and the top shell (5). The end of the pipe (12) extends to the top of the top shell (5).

2. The rotary drilling and grouting integrated machine according to claim 1, characterized in that: The upper surface of the flatbed (1) is fixed with a fixed plate (3), the upper surface of the fixed plate (3) is fixed with a support frame (13), the inner cavity of the support frame (13) is fixed with a first rolling bearing (14), the inner ring of the first rolling bearing (14) is fixed with a rotating frame (15), the rotating frame (15) is fixed on the lower surface of the bottom shell (4), and a turntable (16) is provided on the inner wall of the rotating frame (15). The output end of the turntable (16) is fixed on the bottom surface of the inner cavity of the support frame (13).

3. The rotary drilling and grouting integrated machine according to claim 1, characterized in that: The extrusion mechanism (6) includes a fixed frame (61) and a track rod (64). The fixed frame (61) is fixed on the lower surface of the bottom shell (4). A first stepper motor (62) is fixed on the inner wall of the fixed frame (61). A lead screw (63) is installed at the output end of the first stepper motor (62) through a coupling. The track rod (64) is fixed on the lower surface of the bottom shell (4). The track rod (64) is located directly above the lead screw (63). The end of the lead screw (63) is connected to the end of the track rod (64) through a connecting plate.

4. The rotary drilling and grouting integrated machine according to claim 3, characterized in that: The outer surface of the lead screw (63) is threaded with a lead screw nut (65). A connecting block (66) is fixed on the upper surface of the lead screw nut (65). A sliding sleeve (67) is fixed on the upper surface of the connecting block (66). A moving tube (69) is fixed on the upper surface of the sliding sleeve (67). A second rolling bearing (611) is fixed on the inner wall of the moving tube (69). An extrusion head (612) is fixed on the inner ring of the second rolling bearing (611). A strip-shaped hole (613) is opened in the inner cavity of the extrusion head (612). An extrusion tube (610) is fixed on the inner wall of the moving tube (69). The end of the extrusion tube (610) is extruded and adapted to the inner cavity of the extrusion head (612).

5. The rotary drilling and grouting integrated machine according to claim 4, characterized in that: The drilling mechanism (7) includes a rotating rod (71), which is fixed on the inner wall of the extrusion head (612). The rotating rod (71) is a hollow metal tube. The outer surface of the rotating rod (71) is symmetrically provided with track grooves (72). Several evenly distributed water-permeable holes (73) are provided at the track grooves (72) on the outer surface of the rotating rod (71). The track grooves (72) and the strip holes (613) are on the same straight line.

6. The rotary drilling and grouting integrated machine according to claim 5, characterized in that: The rotating rod (71) is threaded to a rotating tube (74) at one end away from the extrusion head (612). The spiral tightening direction of the rotating tube (74) connected to the rotating rod (71) is the same as the rotation direction of the rotating rod (71). A drill bit (76) is fixedly provided at one end of the rotating tube (74) pressing the rotating rod (71). A spiral blade (75) is fixedly provided on the outer surface of the rotating tube (74). Several evenly distributed drain ports (77) are penetrating the outer surface of the rotating tube (74). The driving mechanism (8) includes a rotating box (81) and a limiting tube (82). The rotating box (81) is rotatably connected in the inner cavity of the bottom shell (4) and the top shell (5). The limiting tube (82) symmetrically penetrates both ends of the bottom shell (4).

7. The rotary drilling and grouting integrated machine according to claim 6, characterized in that: A third rolling bearing (83) is fixed to the inner wall of the limiting tube (82). The inner ring of the third rolling bearing (83) is fixed to the outer surface of the rotating box (81). A second stepper motor (85) is fixed to the top surface of the inner cavity of the top shell (5). The output end of the second stepper motor (85) is equipped with a drive wheel (86) through a coupling. A driven wheel (87) is fixed to the outer surface of the rotating box (81). The driven wheel (87) is connected to the drive wheel (86) through a belt (88).

8. The rotary drilling and grouting integrated machine according to claim 7, characterized in that: The outer surface of the rotating box (81) is fitted with a first package box (89). The first package box (89) is fitted onto the outer surface of the rotating box (81) via a fourth rolling bearing (810). A water inlet pipe (811) penetrates the upper surface of the first package box (89). The top end of the water inlet pipe (811) penetrates the inner wall of the top shell (5). The top end of the water inlet pipe (811) is fixed to the end of the hose (12) away from the water pump (11). The outer surface of the rotating box (81) is located at... A water inlet hole (812) is provided on one side of the inner cavity of the first package box (89). A second package box (813) is fitted on the outer surface of the rotating box (81). A discharge pipe (814) is passed through the lower surface of the second package box (813). A control valve is provided in the inner cavity of the discharge pipe (814). The discharge pipe (814) passes through the inner wall of the bottom shell (4). A discharge hole (815) is provided on one side of the outer surface of the rotating box (81) located in the inner cavity of the second package box (813).

9. The rotary drilling and grouting integrated machine according to claim 8, characterized in that: The rotating rod (71) is located in the inner cavity of the rotating box (81). The inner wall of the rotating box (81) is symmetrically fixed with track bars (84), and the track bars (84) are frictionally adapted to the track grooves (72) opened on the outer surface of the rotating rod (71).

10. A method for grouting construction of rotary drilling pipe sections, characterized in that, The rotary drilling and grouting integrated machine according to any one of claims 1 to 9 includes the following steps: Step 1: Move the flatbed truck (1) to the construction site, start the hydraulic outriggers (2) to extend downwards, and lift the flatbed truck (1) to a stable state to ensure that the equipment is level. Drive the rotating mechanism to drive the bottom shell (4) and top shell (5) to rotate horizontally. Adjust the azimuth angle of the drilling mechanism (7) so that the vertical projection of the drilling mechanism (7) is accurately aligned with the preset center point of the pile hole. After the alignment is completed, lock it and prepare for drilling operation. Step 2: Start the drive mechanism (8) to drive the rotating box (81) to rotate at high speed. The rotating box (81) cooperates with the drilling mechanism (7) to drive the drilling mechanism (7) to rotate synchronously. At the same time, start the extrusion mechanism (6) to drive the drilling mechanism (7) to move towards the center point of the pile hole and apply a thrust to the rotating drill rod to achieve rotary drilling. During the drilling process, the water pump (11) can be started as needed to send the water in the water tank (9) into the inner cavity of the drilling mechanism (7) through the hose (12) and the drive mechanism (8). The water flow cools and lubricates the end of the drilling mechanism (7) and carries some rock cuttings out of the hole. Step 3: When the drilling mechanism (7) has drilled to the designed depth, stop the extrusion mechanism (6) and keep the rotating box (81) rotating. Start the grouting operation, start the water pump (11), and send the cement slurry into the inner cavity of the drilling mechanism (7) through the hose (12). The slurry flows into the end through the inner cavity of the drilling mechanism (7). As the slurry is continuously injected, start the extrusion mechanism (6) in the opposite direction to make the drilling mechanism (7) slowly withdraw. During the withdrawal process, the rotating box (81) keeps rotating and drives the drilling mechanism (7) to be slowly withdrawn. Under the pressure, the slurry continuously fills the space left after the drill bit (76) is lifted, forming a dense grouting pile body. Step 4: After completing the grouting of the designed pile length, stop the grouting and water pump (11) supply water, continue to reverse drive the squeezing mechanism (6) until it returns to the initial position, while keeping the second stepper motor (85) rotating, and slowly pull the drill rod out of the grouted pile hole.

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