A building pile drilling pile forming construction device

Abstract

The present application belongs to the field of enclosure bored pile forming construction device, specifically to an enclosure bored pile forming construction device, comprising a main machine, a mast is arranged on one side of the main machine, a power head is arranged on the mast, a coupling is arranged on the power head, the coupling is connected with a flower barrel device, six groups of second rollers are gathered to realize the righting of the pile casing, the hydraulic cylinder pulls the sleeve body to continue sliding upward along the flower barrel body, at this time, the second rollers and the first rollers roll along the outer wall of the pile casing and the outer wall of the sleeve body respectively, the lower end of the clamping hook is pressed by the upper end of the pile casing at the same time, the clamping hook is turned over around the second shaft, and the second elastic strip is pressed, until the lower end of the clamping hook is staggered with the upper end of the pile casing, and under the elastic action of the second elastic strip, the lower end of the clamping hook is clamped with the clamping hole on the pile casing, so as to realize the fixed connection of the pile casing and the flower barrel device, and secondly, the correction and fixation of the pile casing are continuously carried out, so as to improve the butt joint efficiency of the pile casing.

Description

Technical Field

[0001] This invention belongs to the technical field of drilling pile construction device for retaining structures, specifically a drilling pile construction device for retaining structures. Background Technology

[0002] Rotary drilling operations sometimes require work on special silty soils, sandy layers, areas with high groundwater content, or karst topography. In these cases, equipping the rotary drilling rig with a casing drive and directly lowering the casing using the rotary power head is considered the most efficient and economical method. Its advantages include ease of operation, ensuring proper casing compaction, shortening excavation and filling time, and improving the drilling efficiency of the rotary drilling rig.

[0003] Publication No. CN111927304A discloses a casing driver and a rotary drilling rig. The driver, for cooperating with the power head and mast of the rotary drilling rig, includes a casing, a coupling, a casing, and a positioning device. The upper end of the casing is connected to the power head via the coupling, and the lower end of the casing is connected to the casing. One end of the positioning device is mounted on the mast, and the other end of the positioning device is matched with the casing to limit the displacement of the casing in the direction perpendicular to the mast. This allows for efficient and stable control of the casing's verticality.

[0004] In the above solution, the problem of inconsistent casing verticality in the power head-driven casing construction method is solved by setting a positioning device. Real-time feedback from sensors allows for continuous monitoring of casing verticality, facilitating timely and effective adjustments to ensure its accuracy. The connection between the casing and the borehole can be via threaded screws or positioning pins. However, during the docking process, the casing verticality needs to be calibrated using a positioning device, monitored by sensors, and then fixed to the borehole using threaded screws or positioning pins. This involves multiple and separate steps, which severely limits the docking efficiency when docking multiple casings. Therefore, this invention provides a construction device for drilled pile foundations in retaining structures. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a pile-forming construction device for bored piles of retaining structure of the present invention, including a main unit, a mast is set on one side of the main unit, a power head is set on the mast, a coupling is set on the power head, and the coupling is connected to a flower cylinder device;

[0007] The flower tube device includes: a flower tube body, a coupling connected to the upper end of the flower tube body, a receiving sleeve movably sleeved on the flower tube body, several sets of straightening mechanisms set at equal angles on the receiving sleeve, the straightening mechanisms being used to correct the verticality of the protective tube, and a limiting mechanism sleeved on the flower tube body, the limiting mechanism being used to fix the protective tube. Through the main unit itself, the flower tube device is moved to directly above the protective tube, and then through the mast, the flower tube device is moved downward, so that the upper end of the protective tube is positioned between the six sets of straightening mechanisms. By moving the receiving sleeve, the six sets of straightening mechanisms correct the verticality of the protective tube, while the limiting mechanism fixes the upper end of the protective tube.

[0008] Preferably, the flower tube device further includes: a hydraulic cylinder, which is fixed to the flower tube body. A receiving sleeve is fixedly connected to the end of the flower tube body. The receiving sleeve includes: a sleeve body, which is fitted onto the flower tube body. Several sets of mounting grooves I are opened at equal angles on the sleeve body. Several sets of mounting grooves II are opened at equal angles on the sleeve body. Two sets of sliding grooves are symmetrically arranged on both sides of the mounting grooves II. An inverted conical surface is provided on the sleeve body. The straightening mechanism includes: a straightening rod, which is located in the mounting groove I. A first roller is screwed to one end of the straightening rod. The first roller is rolled and connected to the inverted conical surface. A second roller is screwed to the other end of the straightening rod. The second roller is close to the end of the protective tube. A shaft I is fixedly installed in the middle of the straightening rod. A first elastic strip is welded to one side of the straightening rod. A bracket is screwed to the shaft I. The bracket is slidably connected to the mounting groove I. The six sets of second rollers converge towards the protective tube at the same time, so that the tilted protective tube is straightened, and the verticality of the protective tube is corrected, so that the protective tube is coaxial with the entire flower tube device.

[0009] Preferably, the limiting mechanism includes: a receiving mechanism, which is sleeved on the sleeve body; several sets of screws evenly distributed on the receiving mechanism; a pressure plate fixedly connected to the lower end of the screws; several sets of movable mechanisms movably installed in the inner ring of the receiving mechanism; a hook located on one side of the movable mechanism; a second shaft fixedly installed in the middle of the hook; the second shaft screwed into the second mounting groove; and a second elastic strip welded to one side of the hook. Under the elastic action of the second elastic strip, the lower end of the hook engages with the bayonet on the protective cylinder, thereby achieving a fixed connection between the protective cylinder and the flower cylinder device. Furthermore, since the correction and fixing of the protective cylinder are performed continuously, the docking efficiency of the protective cylinder is improved.

[0010] Preferably, the receiving mechanism includes: a screw-on sleeve, a screw-on sleeve body, an annular groove in the inner ring of the screw-on sleeve, several sets of rectangular grooves equally spaced on the outer ring of the screw-on sleeve, a gear mechanism in the rectangular grooves, and a gear sleeve fitted on the screw-on sleeve. The screw can move radially, and the movement of the screw can adjust the distance between the pressure plate and the upper end of the casing. The distance will determine the size of the upper end of the casing left on the ground or the depth of screwing into the ground. Therefore, by adjusting the receiving mechanism, the operator can adjust the size of the upper end of the casing left on the ground according to actual needs.

[0011] Preferably, the gear mechanism includes: a gear body, a gear body meshing sleeve, two sets of limiting plates fixedly welded to both sides of the gear body, and two sets of guide keys disposed in the inner ring of the gear body.

[0012] Preferably, two sets of threaded holes are symmetrically opened on the upper and lower sides of the rectangular groove. The threaded holes are screwed to the screw rod, and the screw rod is inserted into the inner ring of the gear body. Two sets of guide grooves are symmetrically opened on the screw rod. The guide grooves are slidably connected to the guide key. The hook flips again with the shaft two as the axis and compresses the second spring bar until the lower end of the hook disengages from the locking hole on the protective cylinder, thereby releasing the hook from limiting the protective cylinder. At this time, the protective cylinder will stop screwing downward, thus avoiding the protective cylinder being screwed into the ground too deeply, resulting in too little of the upper end of the protective cylinder remaining on the ground. Secondly, during the process of the pressure plate contacting the ground, since the pulley two rolls along the annular groove, the pulley two rotates and connects to the screw sleeve, avoiding the pressure plate from rubbing against the ground.

[0013] Preferably, the movable mechanism includes: a movable frame located in the second mounting groove; a pulley 1 screwed to one end of the movable frame, the pulley 1 closely abutting the hook; a pulley 2 screwed to the other end of the movable frame, the pulley 2 rollingly connected to the annular groove; and two sets of guide rails symmetrically fixed on both sides of the movable frame, the guide rails slidingly connected to the slide groove; and several sets of latches opened at equal angles on the upper end of the protective sleeve, the latches engaging the hook.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. During the moving receiving sleeve process, the hydraulic cylinder pulls the sleeve body to slide upward along the main body of the flower cylinder. The sliding sleeve body causes the inverted conical surface to simultaneously squeeze the six sets of first rollers. The first rollers roll along the inverted conical surface, and at the same time, the first rollers drive the straightening rod to rotate around the first axis and stretch the first elastic bar. The straightening rod drives the second roller to move towards the upper end of the protective cylinder until the first roller is offset from the inverted conical surface. Therefore, the six sets of second rollers converge towards the protective cylinder at the same time, so that the tilted protective cylinder is straightened, and the verticality of the protective cylinder is corrected, so that the protective cylinder is coaxial with the entire flower cylinder device.

[0016] 2. After the six sets of second rollers converge to straighten the protective casing, the hydraulic cylinder pulls the sleeve to continue sliding upward along the main body of the flower cylinder. At this time, the second roller and the first roller roll along the outer wall of the protective casing and the outer wall of the sleeve, respectively. At the same time, the lower end of the moving hook will be squeezed by the upper end of the protective casing, causing the hook to flip around the axis of the second shaft and squeeze the second elastic bar until the lower end of the hook is misaligned with the upper end of the protective casing. Under the elastic action of the second elastic bar, the lower end of the hook engages with the bayonet on the protective casing, thereby fixing the protective casing to the flower cylinder device. Furthermore, since the correction and fixing of the protective casing are carried out continuously, the docking efficiency of the protective casing is improved.

[0017] 3. After the casing is fixedly connected to the perforation device, the main unit moves the casing to the desired drilling location. Then, the power head rotates the perforation device via a coupling, which in turn rotates the casing. Simultaneously, the mast presses down on the casing, causing it to spiral downwards into the ground. As the casing continues to spiral downwards, the pressure plate first contacts the ground. The ground reaction force on the pressure plate pushes the screw, which, through the receiving mechanism, moves pulley two upwards. Pulley two, through the movable frame, causes the guide rail to slide upwards along the groove. At the same time, the movable frame drives pulley one to slide against the hook, causing the hook to be squeezed. The hook flips again around shaft two and compresses the second spring bar until the lower end of the hook disengages from the locking slot on the casing, thereby releasing the hook from limiting the casing. At this point, the casing will stop rotating downwards, thus preventing the casing from being rotated too deep into the ground, resulting in too little of the upper end of the casing remaining on the ground. Secondly, during the process of the pressure plate contacting the ground, as pulley two rolls along the annular groove, pulley two rotates to connect the swivel sleeve, preventing the pressure plate from rubbing against the ground.

[0018] 4. The worker holds the screw-on sleeve with one hand and rotates the gear sleeve with the other. The rotating gear sleeve causes the four gear bodies to rotate simultaneously. The gear bodies of the gear bodies rotate the screw through the cooperation of the guide key and the guide groove. Since the screw is screwed onto the screw-on sleeve, the screw can move radially. The movement of the screw can adjust the distance between the pressure plate and the upper end of the casing. The distance will determine the size of the upper end of the casing left on the ground or the depth of screwing into the ground. Therefore, by adjusting the receiving mechanism, the worker can adjust the size of the upper end of the casing left on the ground according to actual needs. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the flower tube device and protective sleeve combination of the present invention.

[0022] Figure 3 This is a schematic diagram showing the flower tube device of the present invention separated from the protective tube.

[0023] Figure 4 This is a schematic diagram of the flower tube device assembly of the present invention.

[0024] Figure 5 This is a cross-sectional view of the main body of the flower tube, the receiving sleeve, the straightening mechanism, and the protective sleeve assembly of the present invention.

[0025] Figure 6 This is a cross-sectional view of the assembly of the receiving sleeve, limiting mechanism, and protective sleeve of the present invention.

[0026] Figure 7This is a cross-sectional view of the receiving mechanism, screw, moving mechanism, and hook assembly of the present invention.

[0027] Figure 8 This is a schematic diagram of the gear mechanism and screw combination of the present invention.

[0028] Figure 9 This is a schematic diagram of the assembly of the receiving sleeve, bracket, hook, and movable frame of the present invention.

[0029] In the diagram: 1. Main unit; 2. Mast; 3. Power head; 4. Coupling; 5. Flower tube assembly; 6. Protective sleeve; 601. Bayonet; 501. Flower tube body; 502. Receiving sleeve; 503. Hydraulic cylinder; 504. Correction mechanism; 505. Limiting mechanism; 506. Pressure plate; 5021. Sleeve body; 5022. Mounting slot one; 5023. Mounting slot two; 5024. Slide groove; 5025. Inverted conical surface; 5041. Correction rod; 5042. First roller; 5043. Second roller; 5044. Shaft 1. 5045. First elastic bar; 5046. Bracket; 5051. Receiving mechanism; 5052. Screw; 521. Guide groove; 5053. Movable mechanism; 5054. Hook; 5055. Shaft 2; 5056. Second elastic bar; 511. Screw-fit sleeve; 512. Annular groove; 513. Rectangular groove; 514. Gear mechanism; 515. Gear sleeve; 41. Gear body; 42. Limiting plate; 43. Guide key; 241. Movable frame; 242. Pulley 1; 243. Pulley 2; 244. Guide rail. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0031] Example 1

[0032] like Figures 1 to 9 As shown in the embodiment of the present invention, a pile-forming construction device for a retaining structure includes a main unit 1, a mast 2 on one side of the main unit 1, a power head 3 on the mast 2, a coupling 4 on the power head 3, and a tube device 5 connected to the coupling 4. The tube device 5 includes: a tube body 501, the upper end of the tube body 501 connected to the coupling 4, a receiving sleeve 502 movably sleeved on the tube body 501, several sets of correction mechanisms 504 equally angled on the receiving sleeve 502, the correction mechanisms 504 being used to correct the verticality of the casing 6, and a limiting mechanism 505 sleeved on the tube body 501, the limiting mechanism 505 being used to fix the casing 6.

[0033] Specifically, the main unit 1, mast 2, and power head 3 adopt relevant structures from existing rotary drilling rigs. The main unit 1 is used to move the tube assembly 5, the mast 2 is telescopic and sliding, and the mast 2 is used to raise and lower the tube assembly 5. The power head 3 is used to drive the rotation of the tube assembly 5. The straightening mechanism 504 is screwed onto the tube body 501, and the straightening mechanism 504 is generally in the shape of... The shape of the straightening mechanism 504 includes an inverted conical surface located outside the receiving sleeve 502. After the receiving sleeve 502 moves, it engages with the inverted conical surface, causing the straightening mechanism 504 to rotate. The straightening mechanism 504 has six sets. Before the flower tube device 5 connects to the protective cylinder 6, the inner diameter between the six sets of straightening mechanisms 504 is larger than the outer diameter of the protective cylinder 6. When connecting to the protective cylinder 6, the main unit 1 is moved to position the flower tube device 5 directly above the protective cylinder 6, and then the mast is activated. Rod 2 drives the flower tube device 5 to move downward, so that the upper end of the protective tube 6 is located between the six sets of straightening mechanisms 504. By moving the receiving sleeve 502 upward, the receiving sleeve 502 simultaneously squeezes the upper end of the six sets of straightening mechanisms 504, causing the straightening mechanisms 504 to deflect. After the straightening mechanisms 504 deflect, their bottom end abuts against the outer wall of the protective tube 6. The verticality of the protective tube 6 is corrected by the six sets of straightening mechanisms 504, and at the same time, the limiting mechanism 505 fixes the upper end of the protective tube 6.

[0034] like Figures 3 to 5 As shown, the flower tube device 5 also includes: a hydraulic cylinder 503, which is fixed to the flower tube body 501. A receiving sleeve 502 is fixedly connected to the end of the flower tube body 501. The receiving sleeve 502 includes: a sleeve body 5021, which is fitted onto the flower tube body 501; several sets of mounting grooves 5022 formed at equal angles on the sleeve body 5021; several sets of mounting grooves 5023 formed at equal angles on the sleeve body 5021; two sets of sliding grooves 5024 symmetrically arranged on both sides of the mounting grooves 5023; and an inverted conical surface 5025 provided on the sleeve body 5021. A straightening mechanism 5 is also included. 04 includes: a straightening rod 5041, which is located in the mounting groove 5022; a first roller 5042 screwed to one end of the straightening rod 5041, which is rollingly connected to the inverted conical surface 5025; a second roller 5043 screwed to the other end of the straightening rod 5041, which is close to the end of the protective sleeve 6; a shaft 5044 fixedly installed in the middle of the straightening rod 5041; a first elastic strip 5045 welded to one side of the straightening rod 5041; and a bracket 5046 screwed to the shaft 5044, which is slidably connected to the mounting groove 5022.

[0035] Specifically, the first elastic bar 5045 is made of elastic stainless steel. During the movement of the receiving sleeve 502, the hydraulic cylinder 503 pulls the sleeve body 5021 to slide upward along the flower tube body 501. The sliding sleeve body 5021 causes the inverted conical surface 5025 to simultaneously squeeze the six sets of first rollers 5042. The first rollers 5042 roll along the inverted conical surface 5025. At the same time, the first rollers 5042 drive the straightening rod 5041 to rotate around the axis 5044 and stretch the first elastic bar 5045. The straightening rod 5041 drives the second rollers 5043 to move towards the upper end of the protective cylinder 6 until the first rollers 5042 are offset from the inverted conical surface 5025. Therefore, the six sets of second rollers 5043 simultaneously converge towards the protective cylinder 6, straightening the tilted protective cylinder 6 and correcting the verticality of the protective cylinder 6, so that the protective cylinder 6 is coaxial with the entire flower tube device 5.

[0036] like Figure 6 As shown, the limiting mechanism 505 includes: a receiving mechanism 5051, which is sleeved on the sleeve body 5021; several sets of screws 5052 distributed at equal angles on the receiving mechanism 5051; a pressure plate 506 fixedly connected to the lower end of the screws 5052; several sets of movable mechanisms 5053 movably installed in the inner ring of the receiving mechanism 5051; a hook 5054 located on one side of the movable mechanism 5053; a second shaft 5055 fixedly installed in the middle of the hook 5054; the second shaft 5055 screwed into the second mounting groove 5023; and a second elastic bar 5056 welded to one side of the hook 5054. Several sets of slots 601 are opened at equal angles on the upper end of the protective sleeve 6, and the slots 601 engage with the hooks 5054.

[0037] Specifically, the second elastic bar 5056 is also made of elastic stainless steel. The moving mechanism 5053 is set with six sets. After the six sets of second rollers 5043 come together to straighten the protective cylinder 6, the hydraulic cylinder 503 pulls the sleeve 5021 to continue sliding upward along the main body 501 of the flower cylinder. At this time, the second rollers 5043 and the first rollers 5042 roll along the outer wall of the protective cylinder 6 and the outer wall of the sleeve 5021, respectively. At the same time, the lower end of the moving hook 5054 will be subjected to the upper part of the protective cylinder 6. The port is squeezed, causing the hook 5054 to flip around the axis 5055 and squeeze the second elastic bar 5056 until the lower end of the hook 5054 is offset from the upper port of the protective tube 6. Under the elastic action of the second elastic bar 5056, the lower end of the hook 5054 engages with the bayonet 601 on the protective tube 6, thereby fixing the protective tube 6 to the flower tube device 5. Furthermore, since the correction and fixing of the protective tube 6 are carried out continuously, the docking efficiency of the protective tube 6 is improved.

[0038] like Figures 3 to 5As shown, the movable mechanism 5053 includes: a movable frame 241 located within the mounting groove 5023; a pulley 242 screwed onto one end of the movable frame 241, the pulley 242 being tightly attached to the hook 5054; a pulley 243 screwed onto the other end of the movable frame 241, the pulley 243 being tactilely connected to the annular groove 512; and two sets of guide rails 244 symmetrically fixed on both sides of the movable frame 241, the guide rails 244 being slidably connected to the sliding groove 5024.

[0039] Specifically, after the casing 6 is fixedly connected to the perforation device 5, the main unit 1 moves the casing 6 to the position where drilling is required. Then, the power head 3 rotates the perforation device 5 through the coupling 4. The perforation device 5 drives the casing 6 to rotate, and at the same time, the mast 2 presses down on the casing 6, causing the casing 6 to spiral downwards into the ground. As the casing 6 continues to spiral downwards, the pressure plate 506 first contacts the ground. The ground reaction force on the pressure plate 506 causes the pressure plate 506 to push the screw 5052. The screw 5052 drives the pulley 243 to move upwards through the receiving mechanism 5051. The pulley 243 causes the guide rail 244 to slide upwards along the slide groove 5024 through the movable frame 241. The frame 241 drives the pulley 242 to slide against the hook 5054, causing the hook 5054 to be squeezed. The hook 5054 flips again around the axis 5055 and compresses the second elastic bar 5056 until the lower end of the hook 5054 disengages from the latch 601 on the casing 6, thereby releasing the hook 5054 from limiting the casing 6. At this time, the casing 6 will stop rotating downward, thus preventing the casing 6 from being rotated too deep into the ground, resulting in too little of the upper end of the casing 6 remaining on the ground. Secondly, during the process of the pressure plate 506 contacting the ground, as the pulley 243 rolls along the annular groove 512, the pulley 243 rotates to connect the screw sleeve 511, preventing the pressure plate 506 from rubbing against the ground.

[0040] Example 2

[0041] like Figures 7 to 8 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: The receiving mechanism 5051 includes: a screw-fit sleeve 511, a screw-fit sleeve body 5021 of the screw-fit sleeve 511, an annular groove 512 disposed in the inner ring of the screw-fit sleeve 511, a plurality of rectangular grooves 513 equally spaced on the outer ring of the screw-fit sleeve 511, a gear mechanism 514 disposed in the rectangular grooves 513, and a gear sleeve 515 sleeved on the screw-fit sleeve 511. The gear mechanism 514 includes: a gear body 41, a gear body 41 meshing gear sleeve 515, two sets of limiting plates 42 fixedly welded to both sides of the gear body 41, and two sets of guide keys 43 disposed in the inner ring of the gear body 41. Two sets of threaded holes are symmetrically opened on the upper and lower sides of the rectangular grooves 513. The threaded holes are screwed to a screw rod 5052. The screw rod 5052 is inserted into the inner ring of the gear body 41. Two sets of guide grooves 521 are symmetrically opened on the screw rod 5052. The guide grooves 521 are slidably connected to the guide keys 43.

[0042] Specifically, four sets of rectangular grooves 513 are set. The operator holds the screw sleeve 511 with one hand and rotates the gear sleeve 515 with the other hand. The rotating gear sleeve 515 causes the four sets of gear bodies 41 to rotate simultaneously. The gear body 41 of the gear body 41 rotates through the cooperation of the guide key 43 and the guide groove 521. Since the screw 5052 is screwed on the screw sleeve 511, the screw 5052 can move radially. The movement of the screw 5052 can adjust the distance between the pressure plate 506 and the upper end of the casing 6. The distance will determine the size of the upper end of the casing 6 left on the ground or the depth of screwing into the ground. Therefore, by adjusting the receiving mechanism 5051, the operator can adjust the size of the upper end of the casing 6 left on the ground according to actual needs.

[0043] Working principle: When docking with the protective cylinder 6 is required, the main unit 1 moves the flower cylinder device 5 directly above the protective cylinder 6. Then, the mast 2 moves the flower cylinder device 5 downward, positioning the upper end of the protective cylinder 6 between the six sets of straightening mechanisms 504. The hydraulic cylinder 503 pulls the sleeve 5021 upward along the flower cylinder body 501. The sliding sleeve 5021 causes the inverted conical surface 5025 to simultaneously press against the six sets of first rollers 5042. The first rollers 5042 roll along the inverted conical surface 5025, and simultaneously, the first rollers 5042 drive the straightening rod 5041 to rotate around the axis 5044, stretching the first elastic bar. 5045, the straightening rod 5041 drives the second roller 5043 to move towards the upper end of the protective cylinder 6 until the first roller 5042 is offset from the inverted conical surface 5025. Therefore, all six sets of second rollers 5043 converge towards the protective cylinder 6, straightening the tilted protective cylinder 6. The hydraulic cylinder 503 pulls the sleeve 5021 to continue sliding upward along the main body 501 of the flower cylinder. At this time, the second roller 5043 and the first roller 5042 roll along the outer wall of the protective cylinder 6 and the outer wall of the sleeve 5021, respectively. At the same time, the lower end of the moving hook 5054 will be squeezed by the upper end of the protective cylinder 6, causing the hook 5054 to rotate around the axis 5055. The cylinder is flipped over and the second elastic bar 5056 is squeezed until the lower end of the hook 5054 is offset from the upper end of the casing 6. Under the elastic action of the second elastic bar 5056, the lower end of the hook 5054 engages with the slot 601 on the casing 6. The casing 6 is then moved to the position where drilling is required by the main unit 1. Then, the power head 3 rotates the flower cylinder device 5 through the coupling 4. The flower cylinder device 5 drives the casing 6 to rotate. At the same time, the mast 2 presses down on the casing 6, causing the casing 6 to spiral downwards into the ground. As the casing 6 continues to spiral downwards, the pressure plate 506 contacts the ground first. The ground reaction force acts on the pressure plate 506, causing the pressure plate 506 to... 06 pushes the screw 5052, which drives the pulley 243 to move upward through the receiving mechanism 5051. The pulley 243 causes the guide rail 244 to slide upward along the slide groove 5024 through the movable frame 241. At the same time, the movable frame 241 drives the pulley 242 to slide against the hook 5054, causing the hook 5054 to be squeezed. The hook 5054 flips again around the axis 2 5055 and compresses the second elastic bar 5056 until the lower end of the hook 5054 disengages from the latch 601 on the protective cylinder 6, thereby releasing the hook 5054 from limiting the protective cylinder 6. At this time, the protective cylinder 6 will stop rotating downward.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pile-forming construction device for bored piles in retaining structures, comprising a main unit (1), a mast (2) installed on one side of the main unit (1), a power head (3) installed on the mast (2), and a coupling (4) installed on the power head (3), characterized in that: The coupling (4) is connected to the flower tube device (5); The flower tube device (5) includes: Flower tube body (501), the upper end of which is connected to a coupling (4); A receiving sleeve (502) is movably fitted onto the main body (501) of the flower tube; A plurality of sets of correction mechanisms (504) are equally spaced on the receiving sleeve (502), the correction mechanisms (504) being used to correct the verticality of the protective sleeve (6); and A limiting mechanism (505) is sleeved on the main body (501) of the flower tube; the limiting mechanism (505) is used to fix the protective tube (6); The flower tube device (5) also includes: A hydraulic cylinder (503) is fixed on the flower tube body (501), and a receiving sleeve (502) is fixedly connected to the end of the flower tube body (501). The receiving sleeve (502) includes: A sleeve (5021) is fitted onto the main body (501) of the flower tube; A number of mounting slots (5022) are equally spaced on the sleeve (5021); Several sets of mounting slots (5023) are equally spaced on the sleeve (5021); Two sets of sliding grooves (5024) symmetrically arranged on both sides of the mounting groove two (5023); and An inverted conical surface (5025) is provided on the sleeve (5021); The corrective mechanism (504) includes: The straightening rod (5041) is located in the mounting groove (5022); A first roller (5042) is screwed onto one end of the straightening rod (5041), and the first roller (5042) is rolledly connected to the inverted conical surface (5025). A second roller (5043) is screwed onto the other end of the straightening rod (5041), and the second roller (5043) is in close contact with the end of the protective sleeve (6); Shaft 1 (5044) is fixedly installed in the middle of the straightening rod (5041); The first elastic bar (5045) is welded to one side of the straightening rod (5041); and A bracket (5046) is screwed onto the shaft (5044), and the bracket (5046) is slidably connected to the mounting groove (5022). The limiting mechanism (505) includes: A receiving mechanism (5051); the receiving mechanism (5051) is sleeved on the sleeve (5021); Several sets of screws (5052) are distributed at equal angles on the receiving mechanism (5051); The pressure plate (506) is fixedly connected to the lower end of the screw (5052); Several sets of movable mechanisms (5053) are installed in the inner circle of the receiving mechanism (5051). Hook (5054) located on one side of the active mechanism (5053); A second shaft (5055) is fixedly installed in the middle of the hook (5054), and the second shaft (5055) is screwed into the second mounting groove (5023); and A second elastic bar (5056) is welded to one side of the hook (5054); The receiving mechanism (5051) includes: Screw-fitting sleeve (511), the screw-fitting sleeve (511) is screw-fitting sleeve body (5021); An annular groove (512) is provided in the inner ring of the screw sleeve (511). Several sets of rectangular grooves (513) are equally spaced on the outer ring of the screw sleeve (511). The gear mechanism (514) is disposed within the rectangular slot (513); and A toothed sleeve (515) is fitted onto the rotary sleeve (511).

2. The pile-forming device for bored piles in retaining structures according to claim 1, characterized in that: The gear mechanism (514) includes: Gear body (41), the gear body (41) meshes with gear sleeve (515); Two sets of limiting plates (42) are fixedly welded to both sides of the gear body (41); and Two sets of guide keys (43) are disposed in the inner ring of the gear body (41).

3. The pile-forming device for bored piles in retaining structures according to claim 2, characterized in that: Two sets of threaded holes are symmetrically opened on the upper and lower sides of the rectangular groove (513). The threaded holes are screwed to the screw rod (5052). The screw rod (5052) is inserted into the inner ring of the gear body (41). Two sets of guide grooves (521) are symmetrically opened on the screw rod (5052). The guide grooves (521) are slidably connected to the guide key (43).

4. The pile-forming device for bored piles in retaining structures according to claim 3, characterized in that: The activity mechanism (5053) includes: Movable frame (241), the movable frame (241) is located in mounting slot two (5023); A pulley (242) is screwed onto one end of the movable frame (241), and the pulley (242) is in close contact with the hook (5054). A pulley two (243) is screwed to the other end of the movable frame (241), the pulley two (243) being rolledly connected to the annular groove (512); and Two sets of guide rails (244) are symmetrically fixed on both sides of the movable frame (241), and the guide rails (244) are slidably connected to the slide groove (5024).

5. The pile-forming device for bored piles in retaining structures according to claim 4, characterized in that: The upper end of the casing (6) is provided with several sets of slots (601) at equal angles, and the slots (601) are engaged with hooks (5054).

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