A drilling device for a large-diameter rock-socketed pile full-casing full-rotation drilling machine
By introducing a rubber rod and scraper cleaning mechanism into a full-rotation drilling rig for large-diameter embedded rock piles, the problem of cleaning concrete on the inner wall of the steel casing was solved, achieving efficient concrete removal and pile hole stability, and improving construction efficiency.
Patent Information
- Application Number
- CN202110517232.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-05-12
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2041-05-12
AI Technical Summary
During pile hole construction, the adsorption of concrete on the inner wall of the steel casing increases the difficulty of cleaning and wastes concrete, thus affecting construction efficiency.
A drilling device for a large-diameter rock-socketed pile full-casing full-rotation drilling rig was designed, including a casing, a fixing mechanism, a limiting mechanism, a full-rotation full-casing drilling rig, a rotary drilling machine, a reinforcing cage, a cleaning mechanism, and a grouting mechanism. The device removes the concrete from the inner wall of the casing through the cooperation of a rubber rod and a scraper, and fills the pile hole with the grouting mechanism to prevent the hole wall from collapsing.
It effectively reduces the difficulty of cleaning the concrete on the inner wall of the steel casing, reduces concrete waste, improves construction efficiency, and prevents pile hole collapse.
Smart Images
Figure CN113338942B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of pile hole construction, and particularly relates to a drilling device for a large-diameter rock-socketed pile full-casing full-rotation drilling machine. BACKGROUND
[0002] When a pile hole is constructed in a high fill slag layer, a double-wall steel casing with a bottom cutting blade is rotated into the high fill slag layer by using a full-casing full-rotation drilling machine, and the slag is cut and then taken out from the pile hole by using a two-piece type grab bucket, and the cycle operation is performed, the casing is followed, and finally reaches the rock layer, and then a rotary drilling machine is used to drill a hole to the design hole bottom elevation, and the whole process forms a full-casing pile foundation hole forming operation.
[0003] When the pile hole is poured with concrete, the steel casing needs to be pulled out from the concrete, and part of the concrete is adsorbed on the inner side wall of the steel casing, which reduces the concrete in the pile hole, easily causes the hole wall to collapse, wastes the concrete, and the concrete is adsorbed in the inner part of the steel casing, which increases the difficulty of cleaning the steel casing.
[0004] Therefore, it is necessary to provide a new large-diameter rock-socketed pile full-casing full-rotation drilling machine drilling device to solve the above technical problems. SUMMARY
[0005] The technical problem solved by the present application is to provide a large-diameter rock-socketed pile full-casing full-rotation drilling machine drilling device which reduces the internal concrete of the steel casing and reduces the difficulty of cleaning the steel casing.
[0006] To solve the above technical problems, the large-diameter rock-socketed pile full-casing full-rotation drilling machine drilling device provided by the present application comprises: a casing; a fixing mechanism fixed at the connection of the two casings; a limiting mechanism connected to the fixing mechanism; a full-rotation full-casing drilling machine rotationally connected to the side wall of the casing; a rotary excavator slidingly connected to the inside of the casing; a steel cage arranged in the inside of the casing; a cleaning mechanism slidingly connected to the inner side wall of the casing, the cleaning mechanism comprising a connecting rod, a cover plate, a support rod, a scraper, a rubber rod and a rotating rod, the top end of the steel cage being provided with the cover plate, the bottom end of the cover plate being rotationally connected to the connecting rod, the connecting rod being tied by a steel wire at the top end of the steel cage; the top end of the cover plate is equidistantly provided with the support rod, the inside of the support rod is slidingly connected to the rubber rod, the rubber rod with elasticity is fixedly connected to the scraper, and the scraper is slidingly connected to the inner side wall of the casing; one end of the support rod is threadedly connected to the rotating rod, and the rotating rod abuts against the side wall of the rubber rod; and a grouting mechanism connected to the cover plate and the steel cage.
[0007] Preferably, the protecting barrel comprises a barrel body, a fixing ring and a bottom tooth, the barrel body is connected with the inside of the full set of casing drill of full rotation, the top end of the barrel body is installed with the fixing ring, and the bottom end of the barrel body is installed with the bottom tooth.
[0008] Preferably, the cross section of the fixing ring and the side wall of the bottom tooth are trapezoidal structures, and the side wall of the fixing ring is slidingly connected with the bottom tooth.
[0009] Preferably, the fixing mechanism comprises a fixing plate, a fixing rod, a clamping groove, a hexagonal prism and a sliding groove, the side wall of the fixing ring is installed with the fixing plate with an arc-shaped side wall at equal intervals, the inside of the fixing plate is slidingly connected with the bottom tooth, the side wall of the fixing plate is provided with the clamping groove in the shape of a hexagonal prism, the inside of the clamping groove and the sliding groove is slidingly connected with the hexagonal prism, the hexagonal prism is fixedly connected with the fixing rod, and the side wall of the bottom tooth is symmetrically provided with the sliding groove with an arc-shaped side wall.
[0010] Preferably, the limiting mechanism comprises a clamping plate, a fixing sleeve and a limiting rod, one end of the fixing rod is fixedly connected with the clamping plate and the limiting rod, and the inside of the clamping plate is rotatably connected with the limiting rod; the side wall of the clamping plate is threadedly connected with the fixing sleeve, and the fixing sleeve abuts against the side wall of the limiting rod.
[0011] Preferably, the grouting mechanism comprises a hose, a grouting pipe, a fixing block, a fixing sleeve, a rubber pad and a ball, the side wall of the reinforcement cage is installed with the grouting pipe, the bottom end of the grouting pipe is installed with the fixing block, the inside of the fixing block in the shape of a hemisphere is installed with the rubber pad, and the inside of the rubber pad is clamped with the ball; the side wall of the cover plate is installed with the fixing sleeve, the inside of the fixing sleeve is clamped with the grouting pipe, and the top end of the grouting pipe is threadedly connected with the hose.
[0012] Preferably, the diameter of the ball is equal to the inner diameter of the grouting pipe, and the diameter of the ball is greater than the minimum inner diameter of the rubber pad with elasticity.
[0013] Compared with the related art, the drilling device for the large-diameter rock-socketed pile full set of casing drill of full rotation has the following beneficial effects:
[0014] The application provides a drilling device for a large-diameter rock-socketed pile full-casing full-rotation drilling machine. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 The structure diagram of the drilling device for the large-diameter rock-socketed pile full-casing full-rotation drilling machine is provided.
[0016] Figure 2 The internal structure diagram of the casing is shown. Figure 1
[0017] Figure 3 The enlarged structure diagram of B is shown. Figure 2
[0018] Figure 4 The enlarged structure diagram of A is shown. Figure 1
[0019] Figure 5 The internal structure top view of the fixed plate is shown. Figure 4
[0020] Figure 6 The internal structure diagram of the casing is shown. Figure 2
[0021] Figure 7 The casing structure top view is shown. Figure 2
[0022] Figure 8 for Figure 6 The diagram shows the internal structure of the fixed block.
[0023] Numbered in the diagram: 1. Casing, 11. Casing body, 12. Fixing ring, 13. Bottom tooth, 2. Full-rotation full-casing drilling rig, 3. Rotary drilling rig, 4. Fixing mechanism, 41. Fixing plate, 42. Fixing rod, 43. Slot, 44. Hexagonal prism, 45. Slide groove, 5. Limiting mechanism, 51. Clamping plate, 52. Fixing sleeve, 53. Limiting rod, 6. Reinforcing cage, 7. Cleaning mechanism, 71. Connecting rod, 72. Cover plate, 73. Support rod, 74. Scraper, 75. Rubber rod, 76. Rotating rod, 8. Grouting mechanism, 81. Hoses, 82. Grouting pipe, 83. Fixing block, 84. Fixing sleeve, 85. Rubber pad, 86. Ball bearing, 9. Soil layer. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0025] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 ,in, Figure 1 This is a schematic diagram of the drilling device for a large-diameter rock-socketed pile full-casing full-rotation drilling rig provided by the present invention. Figure 2 for Figure 1 The diagram shows the internal structure of the casing. Figure 3 for Figure 2 The diagram shows an enlarged view of the structure at point B. Figure 4 for Figure 1 The diagram shows an enlarged view of the structure at point A. Figure 5 for Figure 4 Top view of the internal structure of the fixed plate shown; Figure 6 for Figure 2 The diagram shows the internal structure of the cylinder. Figure 7 for Figure 2 The top view of the cylindrical structure shown; Figure 8 for Figure 6The fixed block internal structure schematic diagram is shown. The drilling device for the large-diameter rock-socketed pile full casing full-rotation drilling machine comprises: a casing 1; a fixing mechanism 4 fixed at the connection of two casings 1; a limiting mechanism 5 connected to the fixing mechanism 4; a full-rotation full-casing drilling machine 2 rotationally connected to the side wall of the casing 1; a rotary excavator 3 slidingly connected to the inside of the casing 1; a reinforcement cage 6 arranged in the inside of the casing 1; a cleaning mechanism 7 slidingly connected to the inner side wall of the casing 1, the cleaning mechanism 7 comprising a connecting rod 71, a cover plate 72, a support rod 73, a scraper 74, a rubber rod 75 and a rotating rod 76, the top end of the reinforcement cage 6 being provided with the cover plate 72, the bottom end of the cover plate 72 being rotationally connected to the connecting rod 71, the connecting rod 71 being tied by a steel wire at the top end of the reinforcement cage 6; the top end of the cover plate 72 being equidistantly provided with the support rod 73, the inside of the support rod 73 being slidingly connected to the rubber rod 75, the rubber rod 75 being fixedly connected to the scraper 74, the scraper 74 being slidingly connected to the inner side wall of the casing 1; one end of the support rod 73 being threadedly connected to the rotating rod 76, and the rotating rod 76 abutting against the side wall of the rubber rod 75; a grouting mechanism 8 connected to the cover plate 72 and the reinforcement cage 6.
[0026] The casing 1 comprises a cylinder body 11, a fixing ring 12 and a bottom tooth 13, the inside of the full-rotation full-casing drilling machine 2 being rotationally connected to the cylinder body 11, the top end of the cylinder body 11 being provided with the fixing ring 12, and the bottom end of the cylinder body 11 being equidistantly provided with the bottom tooth 13, so that when the cylinder body 11 enters the soil layer 9, the cylinder body 11 drives the bottom tooth 13 to rotate and cut the soil layer in the soil layer 9, facilitating the cylinder body 11 to enter the inside of the soil layer 9.
[0027] The cross section of the fixing ring 12 and the side wall of the bottom tooth 13 are in trapezoidal structure, and the side wall of the fixing ring 12 is slidingly connected to the bottom tooth 13, so that when two cylinder bodies 11 are spliced, the bottom tooth 13 moves along the side wall of the fixing ring 12, thereby preliminarily connecting the two cylinder bodies 11.
[0028] The fixing mechanism 4 includes a fixing plate 41, a fixing rod 42, a clamping groove 43, a hexagonal prism 44 and a sliding groove 45, the side wall of the fixing ring 12 is equidistantly installed with the arc-shaped fixing plate 41, the inside of the fixing plate 41 is slidably connected with the bottom tooth 13; the side wall of the fixing plate 41 is provided with the clamping groove 43 in hexagonal prism shape, the inside of the clamping groove 43 and the sliding groove 45 is slidably connected with the hexagonal prism 44, the hexagonal prism 44 is fixedly connected with the fixing rod 42, and the side wall of the bottom tooth 13 is symmetrically provided with the arc-shaped sliding groove 45; the limiting mechanism 5 includes a clamping plate 51, a fixing sleeve 52 and a limiting rod 53, one end of the fixing rod 42 is fixedly connected with the clamping plate 51 and the limiting rod 53, and the inside of the clamping plate 51 is rotatably connected with the limiting rod 53; the side wall of the clamping plate 51 is threadedly connected with the fixing sleeve 52, and the fixing sleeve 52 abuts against the side wall of the limiting rod 53; when two of the barrel bodies 11 are spliced, one of the barrel bodies 11 above is rotated, the barrel body 11 drives the bottom tooth 13 to rotate, the bottom tooth 13 is rotated into the inside of the fixing plate 41, the sliding groove 45 on the side wall of the bottom tooth 13 is aligned with the clamping groove 43, the hexagonal prism 44 is aligned with the clamping groove 43, the fixing rod 42 connected with the limiting rod 53 is slid, the fixing rod 42 pushes the hexagonal prism 44 to penetrate through the clamping groove 43 and enter the inside of the sliding groove 45, and then the fixing rod 42 connected with the clamping plate 51 is inserted into the bottom end of the bottom tooth 13; when the two sliding grooves 45 on the same bottom tooth 13 are inserted into the hexagonal prism 44, the fixing rod 42 is rotated, the fixing rod 42 drives the hexagonal prism 44, the clamping plate 51 and the limiting rod 53 to rotate, the limiting rod 53 is rotated into the inside of the clamping plate 51, and the hexagonal prism 44 in the bottom tooth 13 is disengaged from the clamping groove 43 in hexagonal prism shape, so that the hexagonal prism 44 is fixed in the sliding groove 45, the fixing sleeve 52 is rotated, the fixing sleeve 52 moves upwards along the side wall of the clamping plate 51, the fixing sleeve 52 wraps the limiting rod 53, preventing the limiting rod 53 from sliding out of the inside of the clamping plate 51, at the same time, the hexagonal prism 44 is disengaged from the clamping groove 43 and clamped in the inside of the sliding groove 45, the bottom tooth 13 and the fixing ring 12 are fixed together, so that the splicing of the two barrel bodies 11 is completed.
[0029] The grouting mechanism 8 comprises a hose 81, a grouting pipe 82, a fixing block 83, a fixing sleeve 84, a rubber pad 85 and a ball 86, the side wall of the reinforcement cage 6 is provided with the grouting pipe 82, the bottom end of the grouting pipe 82 is provided with the fixing block 83, the inside of the hemispherical fixing block 83 is provided with the rubber pad 85, the inside of the rubber pad 85 is clamped with the ball 86; the side wall of the cover plate 72 is provided with the fixing sleeve 84, the inside of the fixing sleeve 84 is clamped with the grouting pipe 82, and the top end of the grouting pipe 82 is threadedly connected with the hose 81; the diameter of the ball 86 is equal to the inner diameter of the grouting pipe 82, and the diameter of the ball 86 is greater than the minimum inner diameter of the rubber pad 85 with elasticity, so as to facilitate the fixing sleeve 84 to fix the grouting pipe 82 on the side wall of the cover plate 72, and the ball 86 seals the rubber pad 85 and the fixing block 83, preventing the concrete from entering the inside of the grouting pipe 82, when the barrel 11 is pulled out of the pile hole, the hose 81 is connected with the grouting pipe 82, the mortar enters the inside of the grouting pipe 82 through the hose 81 to extrude the ball 86, so that the ball 86 extrudes the rubber pad 85 with elasticity, the rubber pad 85 is expanded, the ball 86 slides out of the rubber pad 85, the rubber pad 85 is opened, the mortar enters the inside of the pile hole, fills the concrete in the inside of the pile hole, and prevents the concrete in the inside of the pile hole from reducing to cause the collapse of the hole wall.
[0030] The working principle of the drilling device for the full casing full-rotation drill rig of the large-diameter rock-socketed pile provided by the application is as follows: the full-rotation full-casing drill rig 2 is installed on the bottom surface and connected with the power supply, the barrel 11 is hoisted into the inside of the full-rotation full-casing drill rig 2, the rotation and downward pressing functions of the full-rotation full-casing drill rig 2 are started to slowly cut the bottom teeth 13 into the soil body, and when the barrel 11 is drilled and sunk to the full-rotation operation platform, the two-piece impact grab is used to take out the soil outside the pile hole. After the soil inside the pile hole is taken out, the barrel 11 is hoisted up and aligned with the barrel 11 in the soil layer 9 and then moved downward, so that the bottom teeth 13 at the bottom end of the barrel 11 move along the side wall of the fixed ring 12, thereby preliminarily connecting the two barrels 11. The barrel 11 above is rotated, the barrel 11 drives the bottom teeth 13 to rotate, the bottom teeth 13 are rotated into the inside of the fixed plate 41, the sliding groove 45 on the side wall of the bottom teeth 13 is aligned with the clamping groove 43, the hexagonal prism 44 is aligned with the clamping groove 43, the fixed rod 42 connected with the limiting rod 53 is slid, the fixed rod 42 pushes the hexagonal prism 44 to penetrate the clamping groove 43 and enter the inside of the sliding groove 45, and then the fixed rod 42 connected with the clamping plate 51 is inserted into the bottom end of the bottom teeth 13. When the two sliding grooves 45 on the same bottom teeth 13 are inserted into the hexagonal prism 44, the fixed rod 42 is rotated, the fixed rod 42 drives the hexagonal prism 44, the clamping plate 51 and the limiting rod 53 to rotate, the limiting rod 53 is rotated into the inside of the clamping plate 51, and the hexagonal prism 44 in the bottom teeth 13 is disengaged from the hexagonal clamping groove 43, thereby fixing the hexagonal prism 44 in the sliding groove 45. The fixed sleeve 52 is rotated, the fixed sleeve 52 moves upward along the side wall of the clamping plate 51, the fixed sleeve 52 wraps the limiting rod 53, prevents the limiting rod 53 from sliding out of the inside of the clamping plate 51, and meanwhile the hexagonal prism 44 is disengaged from the clamping groove 43 and clamped in the inside of the sliding groove 45, thereby fixing the bottom teeth 13 and the fixed ring 12 together, thereby completing the splicing of the two barrels 11. The full-rotation full-casing drill rig 2 is opened, the barrel 11 continuously enters the soil layer 9, and the two-piece impact grab is used to take out the soil. When the barrel 11 enters the rock layer, the bottom teeth 13 rotate and cut the rock layer downward, the drilling bucket of the rotary drilling machine 3 is used to take out the rock in the hole outside the pile hole, the rotation function of the full-rotation full-casing drill rig 2 is started to drive the barrel 11 to rotate and cut the rock, and the cycle of rotary drilling and taking out the rock, drilling the barrel 11 to the design elevation of the pile bottom by the full-rotation, removing the residual rock at the bottom of the hole by the hole cleaning drill bit, cleaning the hole after the hole forming operation is completed, hoisting the reinforcement cage 6 into the inside of the pile hole and then pouring the concrete are performed.The cover plate 72 is placed on the reserved steel bars above the reinforcement cage 6, the connecting rod 71 is rotated to abut against the reserved steel bars, the connecting rod 71 is bound on the reserved steel bars by using steel wires, so that the cover plate 72 is fixed above the reinforcement cage 6, the rotating rod 76 is rotated to separate the rotating rod 76 from the rubber rod 75, the rubber rod 75 is slid to slide out of the inside of the supporting rod 73, at the same time, the rubber rod 75 pushes the scraper 75 to abut against the inner side wall of the casing 1, the rubber rod 75 is continuously pressed to be deformed and bent between the supporting rod 73 and the casing 1, the rotating rod 76 is rotated to press the side wall of the rubber rod 75, so that the rubber rod 75 is fixed and prevented from entering the inside of the supporting rod 73, the rubber rod 73 is in a bent state to press the scraper 74 to tightly adhere to the inner side wall of the casing 1, when the full-rotation full-casing drill 2 drives the casing 1 to rotate to pull out the casing 1 from the pile pit, the casing 1 is rotated on the side wall of the scraper 74, the scraper 74 scrapes the concrete adsorbed on the inner side wall of the casing downwards, so that most of the concrete on the inner side wall of the casing 1 is removed, and the concrete falls into the pile pit. When the casing 11 is pulled out from the pile hole, the hose 81 is connected with the grouting pipe 82, the mortar enters the inside of the grouting pipe 82 through the hose 81 to press the ball 86, so that the ball 86 presses the rubber pad 85 with elasticity, the rubber pad 85 is expanded, the ball 86 slides out of the rubber pad 85, the rubber pad 85 is opened, the mortar enters the inside of the pile hole to fill the concrete in the inside of the pile hole, and the concrete in the inside of the pile hole is prevented from being reduced to cause the collapse of the hole wall. After one casing 11 is taken out from the soil layer 9, two casings 11 are separated, the hose 81 and the grouting pipe 82 are separated, the casing 11 is lifted and removed, the hose 81 and the grouting pipe 82 are connected to take out the next casing 1, and the taken-out casing 1 is cleaned.
[0031] Compared with the related art, the drilling device for the large-diameter rock-socketed pile full-casing full-rotation drill provided by the application has the following beneficial effects:
[0032] The present application provides a drilling device for a large-diameter rock-socketed pile full casing full-rotation drilling machine, when concrete pouring is completed, the cover plate 72 is placed on the reserved steel bars above the reinforcement cage 6, the connecting rod 71 is rotated to make the connecting rod 71 abut against the reserved steel bars, the connecting rod 71 is bound on the reserved steel bars by using steel wires, so that the cover plate 72 is fixed above the reinforcement cage 6, the rotating rod 76 is rotated to separate the rotating rod 76 from the rubber rod 75, the rubber rod 75 is slid to slide out of the inside of the supporting rod 73, at the same time, the rubber rod 75 pushes the scraper 75 to abut against the inner side wall of the casing 1, the rubber rod 75 is continuously extruded, the elastic rubber rod 75 is deformed between the supporting rod 73 and the casing 1, the rotating rod 76 is rotated to extrude the side wall of the rubber rod 75, the rubber rod 75 is fixed to prevent the rubber rod 75 from entering the inside of the supporting rod 73, the rubber rod 73 is in a curved state to extrude the scraper 74 to tightly adhere to the inner side wall of the casing 1, when the full-rotation full-casing drilling machine 2 drives the casing 1 to rotate to pull out the casing 1 from the pile hole, the casing 1 rotates on the side wall of the scraper 74, the scraper 74 scrapes the concrete adsorbed on the inner side wall of the casing downwards to remove most of the concrete on the inner side wall of the casing 1, so that the concrete falls into the pile hole, and when the casing 1 is pulled out, the casing 1 and the rubber rod 75 change positions, the elastic rubber rod 75 is elongated or bent to make the rubber rod 75 drive the scraper 74 to move to tightly adhere to the inner side wall of the casing 1, so that the concrete in the casing 1 is effectively removed.
[0033] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.
Claims
1. A drilling device for a large-diameter rock-socketed pile full-casing full-rotation drilling rig, characterized in that, include: Casing (1); A fixing mechanism (4) is fixed at the connection of the two sleeves (1); the fixing mechanism (4) includes a fixing plate (41), a fixing rod (42), a slot (43), a hexagonal prism (44) and a sliding groove (45). The fixing plate (41) with an arc-shaped sidewall is installed at equal intervals on the sidewall of the fixing ring (12). The bottom tooth (13) is slidably connected inside the fixing plate (41). The sidewall of the fixing plate (41) is provided with a hexagonal prism-shaped slot (43). The hexagonal prism (44) is slidably connected inside the slot (43) and the sliding groove (45). The hexagonal prism (44) is fixedly connected to the fixing rod (42). The sidewall of the bottom tooth (13) is symmetrically provided with the sliding groove (45) with an arc-shaped sidewall. A limiting mechanism (5) is connected to the fixing mechanism (4); the limiting mechanism (5) includes a clamping plate (51), a fixing sleeve (52) and a limiting rod (53), one end of the fixing rod (42) is fixedly connected to the clamping plate (51) and the limiting rod (53), and the limiting rod (53) is rotatably connected inside the clamping plate (51); the side wall of the clamping plate (51) is threadedly connected to the fixing sleeve (52), and the fixing sleeve (52) abuts against the side wall of the limiting rod (53); A full-rotation full-casing drilling rig (2) is rotatably connected to the side wall of the casing (1); A rotary drilling rig (3) is slidably connected to the interior of the casing (1); A reinforcing cage (6) is disposed inside the casing (1); The cleaning mechanism (7) is slidably connected to the inner wall of the protective cylinder (1). The cleaning mechanism (7) includes a connecting rod (71), a cover plate (72), a support rod (73), a scraper (74), a rubber rod (75), and a rotating rod (76). The cover plate (72) is installed at the top of the reinforcing cage (6). The bottom end of the cover plate (72) is rotatably connected to the connecting rod (71). The connecting rod (71) is tied to the top of the reinforcing cage (6) by steel wire. The support rod (73) is equidistantly installed at the top of the cover plate (72). The rubber rod (75) is slidably connected inside the support rod (73). The elastic rubber rod (75) is fixedly connected to the scraper (74). The scraper (74) is slidably connected to the inner wall of the protective cylinder (1). One end of the support rod (73) is threadedly connected to the rotating rod (76), and the rotating rod (76) abuts against the side wall of the rubber rod (75). Grouting mechanism (8), which connects the cover plate (72) and the reinforcing cage (6).
2. The drilling device for a large-diameter rock-socketed pile full-casing full-rotation drilling rig according to claim 1, characterized in that, The casing (1) includes a casing (11), a fixing ring (12) and a bottom tooth (13). The casing (11) is rotatably connected to the inside of the full-rotation full casing drilling rig (2). The fixing ring (12) is installed at the top of the casing (11), and the bottom tooth (13) is installed at equal intervals at the bottom of the casing (11).
3. The drilling device for a large-diameter rock-socketed pile full-casing full-rotation drilling rig according to claim 2, characterized in that, The cross section of the fixing ring (12) and the side wall of the bottom tooth (13) are trapezoidal structures, and the side wall of the fixing ring (12) is slidably connected to the bottom tooth (13).
4. The drilling device for a large-diameter rock-socketed pile full-casing full-rotation drilling rig according to claim 2, characterized in that, The grouting mechanism (8) includes a hose (81), a grouting pipe (82), a fixing block (83), a fixing sleeve (84), a rubber pad (85), and a ball bearing (86). The grouting pipe (82) is installed on the side wall of the reinforcing cage (6). The fixing block (83) is installed at the bottom end of the grouting pipe (82). The rubber pad (85) is installed inside the hemispherical fixing block (83). The ball bearing (86) is engaged inside the rubber pad (85). The fixing sleeve (84) is installed on the side wall of the cover plate (72). The grouting pipe (82) is engaged inside the fixing sleeve (84). The top end of the grouting pipe (82) is threadedly connected to the hose (81).
5. The drilling device for a large-diameter rock-socketed pile full-casing full-rotation drilling rig according to claim 4, characterized in that, The diameter of the ball (86) is equal to the inner diameter of the grouting pipe (82), and the diameter of the ball (86) is greater than the minimum inner diameter of the elastic rubber pad (85).
Citation Information
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Rotation type self - cleaning device
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Drilling method using flushing water
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