A steel casing installation device for pile foundation drilling

Abstract

The present invention relates to the technical field of pile foundation construction, and specifically discloses a steel casing installation device for pile foundation drilling, which includes a base and a position adjustment mechanism. The position adjustment mechanism includes a coaxial alignment assembly. An installation hole is provided on the base. The coaxial alignment assembly includes two clamping members symmetrically arranged up and down. The clamping member includes a clamping arm, a first retaining elastic member, a rotating shaft, a first gear, a clamping plate and a second retaining elastic member. When the first retaining elastic member is in a natural state, the clamping arm is kept in the initial position. A clamping surface for clamping the outer peripheral surface of the steel casing is provided on the inner side of the clamping plate. When the second retaining elastic member is in a natural state, the clamping plate is in the initial position. When the steel casing installation device for pile foundation drilling of the present invention is in use, it can automatically adjust the position of the steel casing to make the steel casing to be docked coaxial with the already buried steel casing, without the need for construction personnel to continuously observe the position of the steel casing and perform manual adjustment, thereby improving the construction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of pile foundation construction, and particularly relates to a steel casing installation device for pile foundation drilling. Background Art

[0002] In pile foundation construction, multiple sections of steel casings serving as pile foundations need to be buried in the foundation boreholes. The steel casings need to be buried in the boreholes section by section. During this process, adjacent two sections of steel casings need to be coaxially butted, and the two are fixedly connected by bolts.

[0003] Chinese Patent with the authorization announcement number CN113832966B discloses a precise positioning device for large-diameter and extra-long steel casings, including a positioning frame, a movable limiting member, and a limiting and guiding frame. The positioning frame is arranged on the drilling platform. The positioning frame includes a support frame and a limiting connection system. The support frame is surrounded by multiple support rods. The two ends of the limiting connection system are respectively arranged on two adjacent support rods, and together with the support rods, they enclose a first casing channel. A U-shaped groove is provided on the top surface of the limiting connection system. One end of the movable limiting member is arranged in the U-shaped groove and is movably arranged along the width direction of the U-shaped groove. The other end of the movable limiting member is provided with a limiting arm, which is arranged in the first casing channel and is used to abut against the outer circumferential surface of the steel casing to push the steel casing for precise positioning. A thin plate for adjusting the extending length of the movable limiting member is provided between the side wall of the U-shaped groove and the movable limiting member. The limiting and guiding frame is arranged on the periphery of the steel casing and is installed on the steel pipe piles below the positioning frame. The limiting and guiding frame is provided with a second casing channel, which is used to limit and guide the lowering of the steel casing, so as to ensure that the steel casing remains stable during the lowering process and does not deviate. When the above positioning device is in use, a hoisting device needs to first hoist the steel casing to directly above the channel surrounded by the limiting and guiding frame. During this process, construction workers need to continuously observe the position of the steel casing and control the hoisting device to adjust the position of the steel casing so that the steel casing is directly above the channel surrounded by the limiting and guiding frame. Then slowly lower the steel casing so that the steel casing enters the channel surrounded by the limiting and guiding frame, and the limiting and guiding frame ensures that the steel casing remains stable during the lowering process and does not deviate.

[0004] The problems existing in the use of the above precise positioning device for large-diameter and extra-long steel casings are as follows: Before the steel casing is lowered, construction workers need to continuously observe the position of the steel casing and control the hoisting device to adjust the position of the steel casing so that the steel casing is directly above the channel surrounded by the limiting and guiding frame. During the process of construction workers adjusting the position of the steel casing, errors are likely to occur, resulting in the steel casing deviating from directly above the channel surrounded by the limiting and guiding frame, so that construction workers need to adjust it multiple times, resulting in low construction efficiency. Summary of the Invention

[0005] The present invention provides a steel casing installation device for pile foundation drilling, aiming to solve the problem of low construction efficiency existing in the use of the precise positioning device for large-diameter and extra-long steel casings in the above-mentioned prior art.

[0006] The steel casing installation device for pile foundation drilling of the present invention includes a base and a position adjustment mechanism installed on the base. The position adjustment mechanism can adjust the position of the steel casing. The position adjustment mechanism includes a coaxial alignment component. At least three coaxial alignment components are evenly spaced in the circumferential direction of the installation hole opened on the base. The coaxial alignment component includes two clamping members symmetrically arranged up and down. The clamping member includes a clamping arm, a first retaining elastic member, a rotating shaft, a first gear, a clamping plate, and a second retaining elastic member. One end of the clamping arm is rotatably arranged on the base through the rotating shaft. The rotation axis of the clamping arm is horizontally arranged and perpendicular to the radial direction of the installation hole. The first gear is fixedly arranged on the clamping arm and is coaxial with the rotating shaft. The first gears of the two clamping members are meshed with each other. When the first retaining elastic member is in a natural state, the clamping arm is kept in the initial position. In the initial position, in the direction from outside to inside, the distance from the clamping arm to the symmetry plane of the two clamping members gradually increases. The clamping plate is rotatably arranged at the other end of the clamping arm. The rotation axis of the clamping plate is parallel to the rotation axis of the clamping arm. The inner side of the clamping plate is provided with a clamping surface for clamping the outer peripheral surface of the steel casing. When the second retaining elastic member is in a natural state, the clamping plate is in the initial position. In the initial position, in the direction from outside to inside, the distance from the clamping surface to the symmetry plane of the two clamping members gradually decreases.

[0007] The beneficial effects are as follows: When the steel casing installation device for pile foundation drilling of the present invention is in use, first, a section of steel casing is buried in the drilling hole, and the upper end of the steel casing protrudes above the ground. Then, the base is sleeved on the upper end of the steel casing already buried in the drilling hole, and the base is fixed on the ground. The clamping plate of the lower clamping member of the coaxial alignment component is clamped on the outer peripheral surface of the already buried steel casing. Then, a hoisting device is used to hoist the steel casing to be docked and move it above the area surrounded by the clamping plates of the upper clamping member. Then, the hoisting device is controlled to lower the steel casing to be docked. The lower end of the steel casing first touches the clamping surface of the clamping plate. As the steel casing continues to descend, it drives the clamping plate to rotate to the vertical state and clamp the outer peripheral surface of the steel casing. Since the upper clamping plate and the lower clamping plate are always in a coaxial state, during the process of the clamping plate rotating to the vertical state, it can guide the steel casing to be docked to move, so that it is coaxial with the already buried steel casing below. Then, the steel casing to be docked is made to continue to descend until it is docked with the already buried steel casing below. When the steel casing installation device for pile foundation drilling of the present invention is in use, it can automatically adjust the position of the steel casing to make the steel casing to be docked coaxial with the already buried steel casing, without the need for construction workers to continuously observe the position of the steel casing and perform manual adjustment, thereby improving the construction efficiency.

[0008] Preferably, an installation frame is further provided on the base. The center of the installation frame has an avoidance hole for the steel casing to pass through. An installation seat is provided on the installation frame. The installation seats are evenly spaced in the circumferential direction of the installation hole. The number of installation seats is the same as the number of coaxial alignment components. The coaxial alignment components are respectively installed on each installation seat. The clamping arm is rotatably arranged on the installation seat through a rotating shaft.

[0009] Preferably, the installation seat includes an installation block and a radial slider. The installation block is arranged on the installation frame. The radial slider is slidably arranged on the installation block along the radial direction of the installation hole. The clamping arm is rotatably arranged on the radial slider through a rotating shaft. A second reset elastic member is also fixedly arranged on the installation frame. The elastic force direction of the second reset elastic member is the same as the sliding direction of the radial slider. One end of the second reset elastic member is fixedly connected to the installation frame, and the other end is fixedly connected to the radial slider.

[0010] The beneficial effect is that through the sliding of the radial slider, the clamping plate can clamp steel casings with different diameters, thereby improving the applicability of the device.

[0011] Preferably, the installation frame is rotatably arranged on the base. The rotation axis of the installation frame is vertically arranged. A hole alignment driving member for driving the installation frame to reciprocally rotate is also fixedly arranged on the base. The installation block is vertically slidably arranged on the installation frame. A first reset elastic member is also fixedly arranged on the installation frame. The elastic force direction of the first reset elastic member is along the vertical direction. One end of the first reset elastic member is fixedly connected to the installation frame, and the other end is fixedly connected to the installation block. An assembly hole is formed on the clamping surface of the clamping plate. A hole alignment elastic member and a hole alignment block are arranged in the assembly hole. When the hole alignment elastic member is in a natural state, a part of the hole alignment block extends out of the assembly hole to form an overhanging end. The overhanging end is in a frustum shape structure. The hole alignment block can be inserted into the bolt hole of the steel casing.

[0012] The beneficial effect is that the hole alignment driving member can drive the steel casing to be docked to rotate to a position where the bolt holes are vertically corresponding to the bolt holes of the already buried steel casing below, thereby facilitating the subsequent bolt connection of the two steel casings.

[0013] Preferably, a vertical chute is formed on the inner side wall of the mounting bracket. One end of the mounting block is fixedly provided with a vertical slider, which is vertically slidably arranged in the vertical chute. A rack is fixedly arranged on the bottom wall of the vertical chute. The rack is vertically arranged and the teeth of the rack face the inner side of the mounting bracket. An installation groove is formed on the end face of the vertical slider close to the rack. A stop block, a positioning elastic member and a positioning driving member are arranged in the installation groove. The positioning driving member is fixedly arranged in the installation groove. The positioning elastic member connects the stop block and the telescopic rod of the positioning driving member. The positioning driving member can drive the stop block to extend out of the installation groove to engage with the rack, or drive the stop block to retract into the installation groove. A receiving groove is formed on the inner end face of the mounting block. A bolt installation assembly is arranged in the receiving groove. The bolt installation assembly includes a non-rotating mating member, a screwing driving member and an ejecting driving member. The non-rotating mating member can be in non-rotating mating with the head of the bolt. The output shaft of the screwing driving member is fixedly connected to the non-rotating mating member. The ejecting driving member can eject the non-rotating mating member out of the receiving groove and insert it into the bolt hole of the steel casing.

[0014] The beneficial effect is that the bolt installation assembly can screw the bolt into the bolt holes of the steel casing to be docked and the already buried steel casing, and bolt-connect the two, without the need for manual bolt installation.

[0015] Preferably, the ejecting driving member includes a threaded rod, a pressing plate and a second spring. The threaded rod is rotatably arranged on the mounting block. The threaded rod is provided with a first threaded section and a second threaded section with opposite thread directions. The radial slider is threadedly connected to the first threaded section. One end of the second reset elastic member is fixedly connected to the radial slider, and the other end is fixedly connected to the mounting block. The pressing plate and the second spring are located inside the radial slider. The pressing plate is slidably arranged in the receiving groove along the length direction of the threaded rod. The pressing plate is threadedly connected to the second threaded section. The second spring is sleeved on the second threaded section. The pressing plate is located outside the screwing driving member. One end of the second spring is fixedly connected to the pressing plate, and the other end is fixedly connected to the screwing driving member. A positioning member is further arranged in the receiving groove. The positioning member can position the screwing driving member to prevent the screwing driving member from moving. A rotation-limiting driving member is fixedly arranged on the radial slider. A rotation-limiting rod is fixedly arranged on the telescopic rod of the rotation-limiting driving member. The rotation-limiting driving member can drive the rotation-limiting rod to insert into the tooth groove of the first gear to limit the rotation of the first gear.

[0016] Preferably, the positioning member includes a clamping block, an ejecting elastic member, and a positioning slider. The positioning slider is fixedly provided on the housing of the screwing driving member. The positioning slider and the screwing driving member are slidably arranged in the receiving groove along the length direction of the threaded rod. A first vertical sliding hole is formed in the positioning slider. The ejecting elastic member and the clamping block are arranged in the first vertical sliding hole. The clamping block can slide up and down in the first vertical sliding hole. One end of the ejecting elastic member is fixedly connected to the positioning slider, and the other end is fixedly connected to the clamping block. A second vertical sliding hole communicating with the receiving groove is formed in the mounting block. When the first vertical sliding hole and the second vertical sliding hole are vertically corresponding, the upper end portion of the clamping block can be ejected out of the second vertical sliding hole by the ejecting elastic member to form an outer extending end. The outer extending end is a hemispherical structure. The inner hole wall of the second vertical sliding hole is an inclined surface. In the direction from outside to inside, the distance from the inclined surface to the symmetry plane of the two clamping members gradually decreases. When the clamping arm rotates to the horizontal state, it can squeeze the outer extending end of the clamping block back into the second vertical sliding hole.

[0017] Preferably, it further includes a bolt feeding assembly. The bolt feeding assembly includes a receiving box, a pushing plate, and a pushing elastic member. The receiving box is fixedly provided on the mounting block. The receiving box has a receiving cavity. The receiving cavity communicates with the receiving groove. A plurality of bolts are arranged in the receiving cavity. One end of the pushing elastic member is fixedly connected to the wall of the receiving cavity, and the other end is fixedly connected to the pushing plate. The elastic force direction of the pushing elastic member is the same as the arrangement direction of the bolts. The pushing plate presses against the bolts on the side away from the pushing elastic member. The pushing elastic member can push the bolt farthest from the pushing plate into the receiving groove.

[0018] The beneficial effect is that after a bolt is ejected and installed in the bolt hole of the steel casing, the pushing plate can automatically push the bolts placed in the receiving cavity into the receiving groove, realizing automatic supplementary feeding of the bolts.

[0019] Preferably, the hole alignment driving member includes a hole alignment driving motor, a second gear, and an arc-shaped gear ring. The hole alignment driving motor is fixedly provided on the base. The output shaft of the hole alignment driving motor is vertically arranged. The second gear is coaxially fixedly arranged on the output shaft of the hole alignment driving motor. The arc-shaped gear ring is fixedly provided on the mounting frame. The arc-shaped gear ring meshes with the second gear.

[0020] Preferably, the mounting frame includes an upper ring frame, a lower ring frame, and a vertical connecting rod. The upper ring frame and the lower ring frame are coaxially arranged with the mounting hole. The upper end of the vertical connecting rod is fixedly connected to the upper ring frame, and the lower end of the vertical connecting rod is fixedly connected to the lower ring frame.

[0021] The beneficial effects of the present invention are as follows: When the steel casing installation device for pile foundation drilling of the present invention is in use, it can automatically adjust the position of the steel casing to make the steel casing to be butt-jointed coaxial with the already buried steel casing, without the need for construction workers to continuously observe the position of the steel casing and perform manual adjustment, thereby improving the construction efficiency. In addition, the hole alignment driving member can drive the steel casing to be butt-jointed to rotate to a position corresponding to the bolt holes of the already buried steel casing below, so as to facilitate the subsequent bolt connection of the two steel casings. Moreover, the bolt installation assembly can screw the bolts into the bolt holes of the steel casing to be butt-jointed and the already buried steel casing to bolt-connect the two, without the need for manual bolt installation anymore. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. is a schematic perspective view of the steel casing installation device for pile foundation drilling of the present invention in use.

[0023] Figure 2 is Figure 1 an enlarged view of the structure at A in FIG.

[0024] Figure 3 FIG. is a top view of the steel casing installation device for pile foundation drilling of the present invention in use.

[0025] Figure 4 is Figure 3 a sectional view taken along the line B-B in FIG.

[0026] Figure 5 is Figure 4 an enlarged view of the structure at C in FIG.

[0027] Figure 6 is Figure 4 an enlarged view of the structure at D in FIG.

[0028] Figure 7 is Figure 4 a perspective view of the structure in FIG.

[0029] Figure 8 FIG. is a schematic perspective view of the mounting base and the coaxial alignment assembly of the steel casing installation device for pile foundation drilling of the present invention.

[0030] Figure 9 is Figure 8 a front view of the structure in FIG.

[0031] Figure 10 is Figure 8 a top view of the structure in FIG.

[0032] Reference numerals:

[0033] 1. Base; 11. Mounting hole; 12. Annular guide rail; 13. Mounting frame; 131. Upper ring frame; 132. Lower ring frame; 133. Vertical connecting rod; 1331. Vertical sliding groove; 14. Hole alignment driving member; 141. Hole alignment driving motor; 142. Second gear; 143. Arc-shaped gear ring; 15. First reset elastic member; 16. Rack; 2. Mounting seat; 21. Mounting block; 211. Strip-shaped hole; 212. Accommodating groove; 213. Inclined plane; 22. Radial sliding block; 221. Extended end; 23. Vertical sliding block; 24. Stop block; 25. Positioning elastic member; 26. Positioning driving member; 27. Connecting plate; 28. Second reset elastic member; 29. Rotation limiting driving member; 291. Rotation limiting rod; 31. Clamping member; 311. Clamping arm; 312. Rotating shaft; 313. First gear; 314. Clamping plate; 3141. Clamping surface; 315. Hole alignment elastic member; 316. Hole alignment block; 3161. Overhanging end; 41. Rotation stopping and mating member; 42. Screwing driving member; 5. Ejecting driving member; 51. Threaded rod; 511. First threaded section; 512. Second threaded section; 52. Ejecting pressure plate; 53. Second spring; 6. Bolt feeding assembly; 61. Accommodating box; 62. Pushing plate; 63. Pushing elastic member; 71. Block; 711. Extended end; 72. Ejecting elastic member; 73. Positioning sliding block; 81. Steel casing to be docked; 82. Buried steel casing; 83. Bolt hole; 9. Hexagon socket head bolt. Detailed implementation manners

[0034] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

[0035] As Figures 1 to 10 shown, the steel casing installation device for pile foundation drilling of the present invention includes a base 1 and a position adjustment mechanism mounted on the base 1. The position adjustment mechanism can adjust the position of the steel casing 81 to be docked, so that the hoisted steel casing 81 to be docked is coaxial with the buried steel casing 82 below.

[0036] As Figure 1 and Figure 2As shown in the figure, the base 1 is provided with an installation hole 11 for the steel casing to pass through. The base 1 is also fixedly provided with an annular guide rail 12, and the annular guide rail 12 is coaxially arranged with the installation hole 11. The base 1 is further provided with an installation frame 13, and the center of the installation frame 13 has an avoidance hole for the steel casing to pass through. The installation frame 13 includes an upper ring frame 131, a lower ring frame 132 and a vertical connecting rod 133. The upper ring frame 131 and the lower ring frame 132 are coaxially arranged with the installation hole 11. The upper end of the vertical connecting rod 133 is fixedly connected to the upper ring frame 131, and the lower end of the vertical connecting rod 133 is fixedly connected to the lower ring frame 132. The lower ring frame 132 is rotatably arranged on the annular guide rail 12, and the axis 312 of the rotation of the lower ring frame 132 is vertically arranged. The base 1 is also fixedly provided with an alignment driving member 14 for driving the installation frame 13 to rotate reciprocally. The alignment driving member 14 includes an alignment driving motor 141, a second gear 142 and an arc-shaped gear ring 143. The alignment driving motor 141 is fixedly arranged on the base 1, the output shaft of the alignment driving motor 141 is vertically arranged, the second gear 142 is coaxially and fixedly arranged on the output shaft of the alignment driving motor 141, the arc-shaped gear ring 143 is coaxially and fixedly arranged on the lower ring frame 132, and the arc-shaped gear ring 143 meshes with the second gear 142.

[0037] As Figures 1 - 5 shown, three mounting seats 2 are evenly spaced in the circumferential direction of the installation hole 11 on the vertical connecting rod 133 of the installation frame 13. The mounting seat 2 includes a mounting block 21 and a radial sliding block 22. The mounting block 21 is vertically slidably arranged on the installation frame 13. Specifically, a vertical sliding groove 1331 is formed on the inner side wall of the vertical connecting rod 133, and a vertical sliding block 23 is fixedly arranged at one end of the mounting block 21. The vertical sliding block 23 is vertically slidably arranged in the vertical sliding groove 1331. The installation frame 13 is also fixedly provided with a first reset elastic member 15, and the elastic force direction of the first reset elastic member 15 is arranged along the vertical direction. The first reset elastic member 15 is a spring. One end of the first reset elastic member 15 is fixedly connected to the lower groove wall of the vertical sliding groove 1331, and the other end is fixedly connected to the vertical sliding block 23. A rack 16 is fixedly arranged on the bottom wall of the vertical sliding groove 1331. The rack 16 is vertically arranged and the tooth part of the rack 16 faces the inner side of the installation frame 13. An installation groove is formed on the end face of the vertical sliding block 23 close to the rack 16. A stop block 24, a positioning elastic member 25 and a positioning driving member 26 are arranged in the installation groove. The positioning driving member 26 is an electric push rod. The positioning driving member 26 is fixedly arranged in the installation groove, and a connecting plate 27 is fixedly arranged on the telescopic rod of the positioning driving member 26. The positioning elastic member 25 is a spring. The positioning elastic member 25 connects the stop block 24 and the connecting plate 27. The positioning driving member 26 can drive the stop block 24 to partially extend out of the installation groove to engage with the rack 16, or drive the stop block 24 to retract into the installation groove to disengage from the rack 16.

[0038] As Figures 6 - 10As shown, the radial slider 22 is slidably arranged on the mounting block 21 along the radial direction of the mounting hole 11. Specifically, a strip-shaped hole 211 extending along the radial direction of the mounting hole 11 is formed on the mounting block 21, and the strip-shaped hole 211 penetrates through the mounting block 21 in the vertical direction. The radial slider 22 is arranged in the strip-shaped hole 211, and the upper and lower ends of the radial slider 22 respectively penetrate out of the strip-shaped hole 211 to form extending ends 221. A second reset elastic member 28 is fixedly arranged in the strip-shaped hole 211, and the elastic force direction of the second reset elastic member 28 is consistent with the sliding direction of the radial slider 22. The second reset elastic member 28 is a spring. One end of the second reset elastic member 28 is fixedly connected to the hole wall of the strip-shaped hole 211, and the other end is fixedly connected to the radial slider 22.

[0039] As Figures 1 - 5 shown, the position adjustment mechanism includes a coaxial alignment component, a bolt mounting component, and a bolt feeding component 6. Three coaxial alignment components are evenly spaced in the circumferential direction of the mounting hole 11, and the coaxial alignment components are respectively mounted on the radial sliders 22 of the respective mounting seats 2. The coaxial alignment component includes two clamping members 31 symmetrically arranged up and down. The clamping member 31 includes a clamping arm 311, a first holding elastic member (not shown in the figure), a rotating shaft 312, a first gear 313, a clamping plate 314, and a second holding elastic member (not shown in the figure). The rotating shaft 312 is fixedly arranged at one end of the clamping arm 311. The clamping arm 311 is rotatably arranged on the extending end 221 of the radial slider 22 through the rotating shaft 312. The rotating shaft 312 line of the clamping arm 311 is horizontally arranged and perpendicular to the radial direction of the mounting hole 11. The first gear 313 is coaxially fixedly arranged on the rotating shaft 312, and the first gears 313 of the two clamping members 31 are meshed with each other. The first holding elastic member is a torsion spring. The first holding elastic member is sleeved on the rotating shaft 312. One end of the first holding elastic member is fixedly connected to the rotating shaft 312, and the other end is fixedly connected to the extending end 221 of the radial slider 22. As Figure 8 and Figure 9 shown, when the first holding elastic member is in the natural state, the clamping arm 311 is kept in the initial position. In the initial position, in the direction from the outside to the inside, the distance from the clamping arm 311 to the symmetry plane of the two clamping members 31 gradually increases. The clamping plate 314 is rotatably arranged at the other end of the clamping arm 311 through a rotating shaft. The rotating shaft 312 line of the clamping plate 314 is parallel to the rotating shaft 312 line of the clamping arm 311. A clamping surface 3141 for clamping the outer peripheral surface of the steel casing is arranged on the inner side of the clamping plate 314. The second holding elastic member is a torsion spring. The second holding elastic member is sleeved on the rotating shaft. One end of the second holding elastic member is fixedly connected to the rotating shaft, and the other end is fixedly connected to the clamping arm 311. When the second holding elastic member is in the natural state, the clamping plate 314 is in the initial position. In the initial position, in the direction from the outside to the inside, the distance from the clamping surface 3141 to the symmetry plane of the two clamping members 31 gradually decreases.

[0040] As Figures 5 - 7As shown, an assembly hole is formed on the clamping surface 3141 of the clamping plate 314, and a hole-aligning elastic member 315 and a hole-aligning block 316 are arranged in the assembly hole. The hole-aligning elastic member 315 is a spring. One end of the hole-aligning elastic member 315 is fixedly connected to the hole wall of the assembly hole, and the other end is fixedly connected to the hole-aligning block 316. The hole-aligning block 316 is slidably arranged in the assembly hole. When the hole-aligning elastic member 315 is in a natural state, a part of the hole-aligning block 316 extends out of the assembly hole to form an overhanging end 3161. The overhanging end 3161 is in a frustum shape, and the hole-aligning block 316 can be inserted into the bolt hole 83 of the steel casing.

[0041] As Figures 5 - 7 shown, a receiving groove 212 extending in the radial direction of the mounting hole 11 is formed on the inner end surface of the mounting block 21, and the bolt mounting assembly is arranged in the receiving groove 212. The bolt mounting assembly includes an anti-rotation fitting 41, a screwing driving member 42 and an ejecting driving member 5. The anti-rotation fitting 41 can be in anti-rotation fit with the head of the bolt. In this embodiment, the bolt is an internal hexagonal bolt 9, and the anti-rotation fitting 41 is a hexagonal columnar structure adapted to the hexagonal hole of the internal hexagonal bolt 9. When in use, the anti-rotation fitting 41 is inserted into the hexagonal hole of the internal hexagonal bolt 9. The screwing driving member 42 is a motor, and the output shaft of the screwing driving member 42 is coaxially fixedly connected to the anti-rotation fitting 41. The screwing driving member 42 can drive the anti-rotation fitting 41 to drive the internal hexagonal bolt 9 to rotate.

[0042] As Figures 4 - 9 shown, the ejecting driving member 5 can eject the anti-rotation fitting 41 out of the receiving groove 212 and insert it into the bolt hole 83 of the steel casing. Specifically, the ejecting driving member 5 includes a threaded rod 51, a top pressing plate 52 and a second spring 53. The threaded rod 51 is rotatably arranged in the strip-shaped hole 211 of the mounting block 21, and the length direction of the threaded rod 51 is arranged along the radial direction of the mounting hole 11. The threaded rod 51 is provided with a first threaded section 511 and a second threaded section 512 with opposite thread directions. A threaded hole adapted to the first threaded section 511 is formed on the radial sliding block 22, and the radial sliding block 22 is threadedly connected to the first threaded section 511. The second reset elastic member 28 is sleeved on the first threaded section 511. The top pressing plate 52 and the second spring 53 are located inside the radial sliding block 22. The top pressing plate 52 is slidably arranged in the receiving groove 212 along the length direction of the threaded rod 51. The second threaded section 512 is located in the receiving groove 212. A threaded hole adapted to the second threaded section 512 is formed on the top pressing plate 52, and the top pressing plate 52 is threadedly connected to the second threaded section 512. The second spring 53 is sleeved on the second threaded section 512. The top pressing plate 52 is located outside the screwing driving member 42. One end of the second spring 53 is fixedly connected to the top pressing plate 52, and the other end is fixedly connected to the screwing driving member 42.

[0043] As Figure 5 and Figure 8As shown, a positioning member is further provided in the accommodation groove 212. The positioning member can position the screwing driving member 42 to prevent the screwing driving member 42 from moving. The positioning member includes a clamping block 71, an ejecting elastic member 72, and a positioning slider 73. The positioning slider 73 is fixedly provided on the housing of the screwing driving member 42. The positioning slider 73 and the screwing driving member 42 are slidably arranged in the accommodation groove 212 along the length direction of the threaded rod 51. A first vertical sliding hole is formed in the positioning slider 73. The ejecting elastic member 72 and the clamping block 71 are arranged in the first vertical sliding hole. The clamping block 71 can slide up and down in the first vertical sliding hole. The ejecting elastic member 72 is a spring. One end of the ejecting elastic member 72 is fixedly connected to the positioning slider 73, and the other end is fixedly connected to the clamping block 71. A second vertical sliding hole communicating with the accommodation groove 212 is formed in the mounting block 21. When the first vertical sliding hole and the second vertical sliding hole are vertically corresponding, the upper end portion of the clamping block 71 can be ejected out of the second vertical sliding hole by the ejecting elastic member 72 to form an outer extending end 711. The outer extending end 711 is a hemispherical structure. The inner hole wall of the second vertical sliding hole is an inclined surface 213. In the direction from outside to inside, the distance from the inclined surface 213 to the symmetry plane of the two clamping members 31 gradually decreases. When the clamping arm 311 rotates to the horizontal state, it can squeeze the outer extending end 711 of the clamping block 71 back into the second vertical sliding hole. At this time, the second spring 53 is in a compressed state. The second spring 53 can push the screwing driving member 42 to drive the clamping block 71 to move inward. The outer extending end 711 of the clamping block 71 is squeezed by the inclined surface 213, so that the outer extending end 711 of the clamping block 71 retracts into the first vertical sliding hole.

[0044] As Figure 2 shown, a rotation limiting driving member 29 is fixedly provided on the radial slider 22. The rotation limiting driving member 29 is an electric push rod. A rotation limiting rod 291 is fixedly provided on the telescopic rod of the rotation limiting driving member 29. The rotation limiting driving member 29 can drive the rotation limiting rod 291 to insert into the tooth groove of the first gear 313 to limit the rotation of the first gear 313.

[0045] As Figure 5 , Figures 8 - 10 shown, the bolt feeding assembly 6 includes a containing box 61, a pushing plate 62, and a pushing elastic member 63. The containing box 61 is fixedly arranged at the inner end of the mounting block 21. The containing box 61 has a containing cavity, and the containing cavity communicates with the accommodation groove 212. A plurality of hexagon socket head cap screws 9 are arranged in the containing cavity in an array. The pushing elastic member 63 is a spring. One end of the pushing elastic member 63 is fixedly connected to the cavity wall of the containing cavity, and the other end is fixedly connected to the pushing plate 62. The elastic force direction of the pushing elastic member 63 is the same as the arrangement direction of the bolts. The side of the pushing plate 62 away from the pushing elastic member 63 presses against the hexagon socket head cap screws 9. The pushing elastic member 63 can push the hexagon socket head cap screw 9 farthest from the pushing plate 62 into the accommodation groove 212.

[0046] The implementation principle of the steel casing installation device for pile foundation drilling in the embodiments of the present invention is as follows: When in use, first bury a section of steel casing in the drilling hole, and make the upper end of the steel casing protrude above the ground. Then, sleeved the base 1 on the upper end of the steel casing already buried in the drilling hole, and then fix the base 1 on the ground, and make the clamping plate 314 of the lower clamping member 31 of the coaxial alignment assembly clamp on the outer peripheral surface of the already buried steel casing. Then, control the hoisting equipment to hoist the steel casing 81 to be docked and move it above the area surrounded by the clamping plate 314 of the upper clamping member 31. Then, control the hoisting equipment to drive the steel casing 81 to be docked to descend. During the descent, the lower end of the steel casing first touches the clamping surface 3141 of the clamping plate 314. As the steel casing continues to descend, it drives the clamping plate 314 to rotate to the vertical state and clamp the outer peripheral surface of the steel casing. Since the upper clamping plate 314 and the lower clamping are always in a coaxial state, during the process of the clamping plate 314 rotating to the vertical state, it can guide the steel casing 81 to be docked to move, so that it is coaxial with the already buried steel casing 82 below.

[0047] After the steel casing 81 to be docked is coaxial with the already buried steel casing 82 below, the clamping plate 314 clamps the outer peripheral surface of the steel casing, and the hole alignment block 316 is squeezed back into the assembly hole by the steel casing. Then, drive the steel casing 81 to be docked to continue descending. At this time, due to the action of the first reset elastic member 15, the installation block 21 cannot move downward, so that the clamping plate 314 cannot move downward, and the steel casing 81 to be docked moves slowly downward relative to the hole alignment block 316. At the same time, control the hole alignment driving member 14 to drive the mounting frame 13 to drive the hole alignment block 316 to rotate reciprocally along the outer peripheral surface of the steel casing. When the hole alignment block 316 moves to a position corresponding to the bolt hole 83 on the steel casing, the hole alignment block 316 is inserted into the bolt hole 83 of the steel casing under the action of the hole alignment elastic member 315. At this time, the mounting frame 13 will drive the steel casing 81 to be docked to rotate synchronously. Then, drive the steel casing 81 to be docked to continue descending. At this time, the steel casing will drive the upper hole alignment block 316 to descend together, thereby driving the upper clamping arm 311 to rotate downward, and then driving the lower clamping arm 311 to rotate upward, driving the lower hole alignment block 316 to move upward until the lower hole alignment block 316 is inserted into the bolt hole 83 of the already buried steel casing 82 under the action of the hole alignment elastic member 315. At this time, the clamping arm 311 is in a horizontal state. At this time, control the hole alignment driving member 14 to stop driving the mounting frame 13 to rotate. Since the two clamping members 31 are symmetrically arranged up and down, the bolt hole 83 on the steel casing 81 to be docked corresponds to the bolt hole 83 on the already buried steel casing 82 up and down.

[0048] When the upper clamping arm 311 rotates downward, the radial slider 22 will move radially outward from the inside to the outside along the mounting hole 11, causing the second reset elastic member 28 to be compressed. At the same time, it will drive the threaded rod 51 to rotate. The rotation of the threaded rod 51 will drive the top pressing plate 52 to move inward from the outside, causing the second spring 53 to be compressed. When the clamping arm 311 is in a horizontal state, the upper clamping arm 311 abuts against the upper surface of the mounting block 21. The upper clamping arm 311 presses the outer extension end 711 of the clamping block 71 back into the second vertical sliding hole. At this time, when the driving member 42 is screwed, under the action of the second spring 53, the bolt on the anti-rotation fitting 41 will be pushed out of the receiving groove 212 and pressed against the outer peripheral surface of the steel casing 81 to be docked. When the clamping arm 311 is in a horizontal state, the control anti-rotation driving member 29 drives the anti-rotation rod 291 to insert into the tooth groove of the first gear 313 to limit the rotation of the first gear 313.

[0049] Then, drive the steel casing 81 to be docked to continue to descend. Since the upper clamping arm 311 cannot continue to rotate downward, at this time, it will drive the mounting block 21 to move downward, causing the first reset elastic member 15 to be compressed. During this process, the lower hole-aligning block 316 is extruded from the bolt hole 83 of the already buried steel casing 82. Then, drive the steel casing 81 to be docked to continue to descend. The mounting block 21 moves downward, and the upper hole-aligning block 316 is squeezed by the upper end of the already buried steel casing 82. The upper hole-aligning block 316 is extruded from the bolt hole 83 of the steel casing 81 to be docked. At this time, the bolt is aligned with the bolt hole 83 of the already buried steel casing 82. Then, drive the steel casing 81 to be docked to continue to descend. At this time, the mounting block 21 no longer moves downward and remains in place. The reason why the mounting block 21 can remain in place is that the stop block 24 extends out of the mounting groove and meshes with the rack 16. The steel casing 81 to be docked continues to descend, making the bolt hole 83 of the steel casing 81 to be docked align with the bolt hole 83 of the already buried steel casing 82. At this time, the bolt is pressed into the bolt holes 83 of the two steel casings. Then, drive the output shaft of the screwing driving member 42 to rotate, driving the bolt to be screwed in the bolt hole 83, realizing the bolt connection between the steel casing 81 to be docked and the already buried steel casing 82, and completing the docking. Then, control the anti-rotation driving member 29 to drive the anti-rotation rod 291 to retract, and then the clamping arm 311 rotates and resets, and the radial slider 22 and the screwing driving member 42 reset. Then, control the positioning driving member 26 to drive the stop block 24 to retract into the mounting groove, and the mounting block 21 resets under the action of the first reset elastic member 15.

[0050] When the steel casing installation device for pile foundation drilling of the present invention is in use, it can automatically adjust the position of the steel casing, so that the steel casing 81 to be docked is coaxial with the already buried steel casing 82, without the need for construction personnel to continuously observe the position of the steel casing and perform manual adjustment, which can improve the construction efficiency. Moreover, the hole alignment driving member 14 can drive the steel casing 81 to be docked to rotate to a position corresponding to the bolt hole 83 of the already buried steel casing 82 below, thus facilitating the subsequent bolt connection of the two steel casings. In addition, the bolt installation assembly can automatically screw the bolts into the bolt holes 83 of the steel casing 81 to be docked and the already buried steel casing 82, and bolt-connect the two, without the need for manual bolt installation anymore.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A steel casing installation device for pile foundation drilling, comprising a base and a position adjustment mechanism installed on the base, the position adjustment mechanism being capable of adjusting the position of the steel casing, characterized in that, The position adjusting mechanism includes a coaxial alignment assembly. An installation hole for the steel casing to pass through is formed in the base. At least three coaxial alignment assemblies are evenly spaced in the circumferential direction of the installation hole. The coaxial alignment assembly includes two clamping members symmetrically arranged up and down. The clamping member includes a clamping arm, a first retaining elastic member, a rotating shaft, a first gear, a clamping plate and a second retaining elastic member. One end of the clamping arm is rotatably arranged on the base through the rotating shaft. The rotation axis of the clamping arm is horizontally arranged and perpendicular to the radial direction of the installation hole. The first gear is fixedly arranged on the clamping arm and is coaxial with the rotating shaft. The first gears of the two clamping members are meshed with each other. When the first retaining elastic member is in the natural state, the clamping arm is kept in the initial position. In the initial position, in the direction from the outside to the inside, the distance from the clamping arm to the symmetry plane of the two clamping members gradually increases. The clamping plate is rotatably arranged at the other end of the clamping arm. The rotation axis of the clamping plate is parallel to the rotation axis of the clamping arm. A clamping surface for clamping the outer peripheral surface of the steel casing is arranged on the inner side of the clamping plate. When the second retaining elastic member is in the natural state, the clamping plate is in the initial position. In the initial position, in the direction from the outside to the inside, the distance from the clamping surface to the symmetry plane of the two clamping members gradually decreases. An installation frame is further arranged on the base. The center of the installation frame has an avoidance hole for the steel casing to pass through. An installation seat is arranged on the installation frame. The installation seat includes an installation block and a radial slider. The installation block is arranged on the installation frame. The radial slider is slidably arranged on the installation block along the radial direction of the installation hole. The clamping arm is rotatably arranged on the radial slider through the rotating shaft. A second reset elastic member is further fixedly arranged on the installation frame. The elastic force direction of the second reset elastic member is consistent with the sliding direction of the radial slider. One end of the second reset elastic member is fixedly connected with the radial slider, and the other end is fixedly connected with the installation block. The installation frame is rotatably arranged on the base. The rotation axis of the installation frame is vertically arranged. A hole alignment driving member for driving the installation frame to rotate back and forth is further fixedly arranged on the base. The installation block is slidably arranged on the installation frame vertically. A first reset elastic member is further fixedly arranged on the installation frame. The elastic force direction of the first reset elastic member is arranged along the vertical direction. One end of the first reset elastic member is fixedly connected with the installation frame, and the other end is fixedly connected with the installation block. An assembly hole is formed in the clamping surface of the clamping plate. A hole alignment elastic member and a hole alignment block are arranged in the assembly hole.

2. The steel casing installation device for pile foundation drilling according to claim 1, characterized in that, The installation seats are evenly spaced in the circumferential direction of the installation hole. The number of the installation seats is the same as that of the coaxial alignment assemblies. The coaxial alignment assemblies are respectively installed on each installation seat. The clamping arm is rotatably arranged on the installation seat through the rotating shaft.

3. The steel casing installation device for pile foundation drilling according to claim 2, characterized in that, When the hole alignment elastic member is in the natural state, a part of the hole alignment block extends out of the assembly hole to form an overhanging end. The overhanging end is in a frustum shape. The hole alignment block can be inserted into the bolt hole of the steel casing.

4. The steel casing installation device for pile foundation drilling according to claim 3, characterized in that, A vertical chute is formed on the inner side wall of the mounting bracket. One end of the mounting block is fixedly provided with a vertical slider, which is vertically slidably arranged in the vertical chute. A rack is fixedly arranged on the bottom wall of the vertical chute. The rack is vertically arranged and the teeth of the rack face the inner side of the mounting bracket. An installation groove is formed on the end face of the vertical slider close to the rack. A stop block, a positioning elastic member and a positioning driving member are arranged in the installation groove. The positioning driving member is fixedly arranged in the installation groove. The positioning elastic member connects the stop block and the telescopic rod of the positioning driving member. The positioning driving member can drive the stop block to extend out of the installation groove to engage with the rack, or drive the stop block to retract into the installation groove. A receiving groove is formed on the inner end face of the mounting block. A bolt installation assembly is arranged in the receiving groove. The bolt installation assembly includes an anti-rotation fitting, a screwing driving member and an ejecting driving member. The anti-rotation fitting can perform anti-rotation fitting with the head of the bolt. The output shaft of the screwing driving member is fixedly connected to the anti-rotation fitting. The ejecting driving member can eject the anti-rotation fitting out of the receiving groove and insert it into the bolt hole of the steel casing.

5. The steel casing installation device for pile foundation drilling according to claim 4, characterized in that, The ejecting driving member includes a threaded rod, a top pressing plate and a second spring. The threaded rod is rotatably arranged on the mounting block. The threaded rod is provided with a first threaded section and a second threaded section with opposite thread directions. The radial slider is threadedly connected to the first threaded section. The top pressing plate and the second spring are located inside the radial slider. The top pressing plate is slidably arranged in the receiving groove along the length direction of the threaded rod. The top pressing plate is threadedly connected to the second threaded section. The second spring is sleeved on the second threaded section. The top pressing plate is located outside the screwing driving member. One end of the second spring is fixedly connected to the top pressing plate, and the other end is fixedly connected to the screwing driving member. A positioning member is further arranged in the receiving groove. The positioning member can position the screwing driving member to prevent the screwing driving member from moving. A rotation limiting driving member is fixedly arranged on the radial slider. A rotation limiting rod is fixedly arranged on the telescopic rod of the rotation limiting driving member. The rotation limiting driving member can drive the rotation limiting rod to insert into the tooth groove of the first gear to limit the rotation of the first gear.

6. The steel casing installation device for pile foundation drilling according to claim 5, characterized in that, The positioning member includes a clamping block, an ejecting elastic member and a positioning slider. The positioning slider is fixedly arranged on the housing of the screwing driving member. The positioning slider and the screwing driving member are slidably arranged in the receiving groove along the length direction of the threaded rod. A first vertical sliding hole is formed on the positioning slider. The ejecting elastic member and the clamping block are arranged in the first vertical sliding hole. The clamping block can slide up and down in the first vertical sliding hole. One end of the ejecting elastic member is fixedly connected to the positioning slider, and the other end is fixedly connected to the clamping block. A second vertical sliding hole communicating with the receiving groove is formed on the mounting block. When the first vertical sliding hole and the second vertical sliding hole are vertically corresponding, the upper end portion of the clamping block can be ejected out of the second vertical sliding hole by the ejecting elastic member to form an outer extending end. The outer extending end is a hemispherical structure. The inner hole wall of the second vertical sliding hole is an inclined surface. In the direction from outside to inside, the distance from the inclined surface to the symmetry plane of the two clamping members gradually decreases. When the clamping arm rotates to the horizontal state, it can squeeze the outer extending end of the clamping block back into the second vertical sliding hole.

7. The steel casing installation device for pile foundation drilling according to claim 6, characterized in that, It further includes a bolt feeding assembly, which includes a receiving box, a pushing plate and a pushing elastic member. The receiving box is fixedly arranged on the mounting block. There is a receiving cavity in the receiving box, and the receiving cavity communicates with the receiving groove. A plurality of bolts are arranged and placed in the receiving cavity. One end of the pushing elastic member is fixedly connected to the cavity wall of the receiving cavity, and the other end is fixedly connected to the pushing plate. The elastic force direction of the pushing elastic member is the same as the arrangement direction of the bolts. The side of the pushing plate away from the pushing elastic member presses against the bolts, and the pushing elastic member can push the bolt farthest from the pushing plate into the receiving groove.

8. The steel casing installation device for pile foundation drilling according to any one of claims 3-7, characterized in that, The hole alignment driving member includes a hole alignment driving motor, a second gear and an arc-shaped gear ring. The hole alignment driving motor is fixedly arranged on the base, the output shaft of the hole alignment driving motor is arranged vertically, the second gear is coaxially fixedly arranged on the output shaft of the hole alignment driving motor, and the arc-shaped gear ring is fixedly arranged on the mounting frame, and the arc-shaped gear ring meshes with the second gear.

9. The steel casing installation device for pile foundation drilling according to any one of claims 2-7, characterized in that, The mounting frame includes an upper ring frame, a lower ring frame and a vertical connecting rod. The upper ring frame and the lower ring frame are coaxially arranged with the mounting hole. The upper end of the vertical connecting rod is fixedly connected to the upper ring frame, and the lower end of the vertical connecting rod is fixedly connected to the lower ring frame.

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