A water jet drilling equipment for forming deep piles in slightly weathered granite geology and a construction method thereof

Abstract

The application relates to the technical field of pile foundation engineering construction, in particular to a water mill drilling equipment for forming deep piles in slightly weathered granite geology and a construction method thereof, the water mill drilling equipment comprises a water mill drilling body vertically arranged on the ground and a self-rotation body device arranged on one side of a stand column, the self-rotation body device comprises a double-disc dumbbell mechanism, a rotation limiting mechanism, a gear assembly and a driving motor, the double-disc dumbbell mechanism is rotationally connected with the rotation limiting mechanism, the driving motor is arranged on one side of the rotation limiting mechanism and is buckled with the rotation limiting mechanism, and the gear assembly is fixedly connected with the rotation limiting mechanism and the driving motor respectively, the water mill drilling equipment has the effects of saving time and labor in displacement of the water mill drilling in the construction process, enhancing the precision of displacement and reducing the labor load of workers. The method of the application is not only simple in operation, time and labor saving, but also accurate in drilling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pile foundation engineering construction, in particular to a water drilling equipment for deep pile construction in slightly weathered granite geology and a construction method thereof. BACKGROUND

[0002] In the construction of pile foundation under the condition of slightly weathered granite geology, water drilling construction is a very effective hole forming method, but the overall weight of the water drilling equipment is relatively large. In the water drilling construction of pile foundation, the drill needs to be manually shifted from the position of one-time hole forming to the position of next hole forming. Since the hole diameter is generally small, only one or two workers can be accommodated in the pile hole, and the space is limited, which makes the construction inconvenient. Moreover, the heavy channel steel needs to be lifted and shifted each time. The workers in the foundation pit manually move the water drilling equipment weighing more than 500 kg to the next hole position. This shifting process is extremely time-consuming and laborious, greatly increasing the labor load of the workers. Moreover, manual shifting often cannot guarantee the accuracy of the drilling. Therefore, it is of great research value to design a water drilling moving and accurate positioning equipment for deep pile construction in slightly weathered granite. SUMMARY

[0003] In order to save time and labor in the displacement of water drilling during the construction process, enhance the accuracy of displacement, and reduce the labor load of workers, the present application provides a water drilling equipment for deep pile construction in slightly weathered granite geology and a construction method thereof.

[0004] In the first aspect, the present application provides a water drilling equipment for deep pile construction in slightly weathered granite geology, which adopts the following technical solution:

[0005] The utility model provides a kind of water drill equipment for deep pile in slightly weathered granite geology, including the vertical setting water drill body of ground, the water drill body includes water drill motor, water drill cylinder, water drill head and column, the water drill cylinder is fixedly connected with the output shaft of water drill motor, the water drill head is fixedly connected with the water drill cylinder end away from water drill motor, the water drill motor, water drill cylinder and water drill head coaxial connection, the column is vertically arranged in water drill cylinder side, the water drill motor is slidably connected with column along vertical direction;Further include the rotation body device being arranged in column side, the rotation body device includes double-disc barbell mechanism, rotation limiting mechanism, gear assembly and drive motor, the double-disc barbell mechanism is vertically arranged and is parallel with column, the column is arranged between double-disc barbell mechanism and the both ends of column and double-disc barbell mechanism abuts, the double-disc barbell mechanism upper end is fixedly connected with round steel pipe, the rotation limiting mechanism is rotatably connected with round steel pipe end away from double-disc barbell mechanism, the drive motor is arranged in rotation limiting mechanism side and is buckled with rotation limiting mechanism, the rotation limiting mechanism end away from round steel pipe is fixedly connected with pile head;The gear assembly includes large gear and pinion, the large gear is sleeved on round steel pipe and is fixedly connected with round steel pipe, the pinion is sleeved on drive motor output shaft and is fixedly connected with drive motor output shaft, and the large gear and pinion are engaged.

[0006] By adopting the above technical scheme, the double-disc barbell mechanism is vertically arranged on the side of water drill body, the double-disc barbell mechanism is in contact with the ground, and the column is arranged between the double-disc barbell mechanism and in contact with the double-disc barbell mechanism, to realize the stability and precision of the water drill body during drilling. After drilling, the water drill motor is started, the water drill cylinder is removed, the pile head is pulled upwards, the large gear is engaged with the pinion, and then the drive motor is started. The output shaft of the drive motor rotates, the output shaft drives the pinion to rotate, the pinion drives the large gear to rotate, and the large gear drives the round steel pipe to rotate. Since the round steel pipe is fixedly connected with the double-disc barbell mechanism and rotatably connected with the rotation limiting mechanism, the round steel pipe drives the double-disc barbell mechanism to rotate synchronously, and the round steel pipe rotates relative to the rotation limiting mechanism. Further, the double-disc barbell mechanism drives the water drill body to rotate and move around the shaft, achieving the purpose of rotating and displacing the water drill body to the next drilling point after drilling. Further, the displacement of the water drill during construction is time-saving and labor-saving, the precision of displacement is enhanced, and the labor load and safety risk of workers are reduced.

[0007] Optionally, the rotation limiting mechanism comprises a limiting block, a plug-in block and a connecting cylinder, a circular inner plug-in groove and an outer plug-in groove are formed on one side of the limiting block facing the gear, the inner plug-in groove and the outer plug-in groove are communicated and the aperture of the inner plug-in groove is larger than that of the outer plug-in groove, the plug-in block and the connecting cylinder are fixedly connected, the plug-in block is arranged in the inner plug-in groove and the diameter of the plug-in block is consistent with the aperture of the inner plug-in groove, the connecting cylinder is arranged in the outer plug-in groove and the diameter of the connecting cylinder is consistent with the aperture of the outer plug-in groove, and the circular steel pipe is arranged in the connecting cylinder and is plugged with the connecting cylinder.

[0008] By adopting the above technical scheme, since the inner plug-in groove and the outer plug-in groove are communicated and the aperture of the inner plug-in groove is larger than that of the outer plug-in groove, the plug-in block is arranged in the inner plug-in groove and cannot fall from the outer plug-in groove, thereby realizing the fixation of the plug-in block in the limiting block, the plug-in block is fixedly connected with the connecting cylinder extending out of the outer plug-in groove, the connecting cylinder is plugged with the circular steel pipe, thereby realizing the synchronous rotation of the connecting cylinder and the plug-in block in the outer plug-in groove and the inner plug-in groove along with the rotation of the circular steel pipe, and the rotation of the circular steel pipe relative to the limiting block is realized.

[0009] Optionally, a first plug hole penetrating a cross section of the circular steel pipe is formed on one end of the circular steel pipe close to the connecting cylinder, a second plug hole is formed on the connecting cylinder, the second plug hole corresponds to the first plug hole, and a movable plug pin is arranged in the first plug hole and the second plug hole.

[0010] By adopting the above technical scheme, the first plug hole is formed on the circular steel pipe, the second plug hole is formed on the connecting cylinder, the connecting cylinder is arranged in the circular steel pipe, and the movable plug pin is arranged in the first plug hole and the second plug hole, thereby realizing the detachable connection of the circular steel pipe and the connecting cylinder, facilitating the installation or dismounting, and realizing the synchronous rotation of the circular steel pipe and the connecting cylinder.

[0011] Optionally, the double-disc dumbbell mechanism comprises a lower circular steel disc, a support rod and an upper circular steel disc, the lower circular steel disc is arranged on a leveled position of the foundation pit ground, the support rod is vertically arranged, the support rod is fixedly connected with the lower circular steel disc and the upper circular steel disc at two ends respectively, the circular steel pipe is fixedly arranged on one side of the upper circular steel disc away from the support rod, and the stand column is arranged between the lower circular steel disc and the upper circular steel disc and abuts against the lower circular steel disc and the upper circular steel disc.

[0012] By adopting the above technical scheme, the lower circular steel disc is attached to the ground, the support rod is arranged between the upper circular steel disc and the lower circular steel disc and serves as a support column, the upper circular steel disc supports the circular steel pipe, and the stand column is arranged between the upper circular steel disc and the lower circular steel disc and abuts against the upper circular steel disc and the lower circular steel disc, thereby realizing the fixed connection of the stand column and the double-disc dumbbell mechanism and further realizing the fixed connection of the water mill body and the double-disc dumbbell mechanism. In addition, the arrangement of the upper circular steel disc and the lower circular steel disc makes the support column more stable and less likely to shake.

[0013] Optionally, one side of the lower circular steel disc and the upper circular steel disc is fixedly provided with a steel gasket, and a recess is formed in the steel gasket, and the two ends of the stand are arranged in the recess.

[0014] By adopting the above technical scheme, the steel gasket is arranged to make the lower circular steel disc and the upper circular steel disc more solid and durable; the recess is formed in the steel gasket, and the two ends of the stand are arranged in the recess to limit the stand, so that the position of the stand is fixed and is not easy to tilt or move on the steel gasket, thereby realizing the stability and firmness of the stand.

[0015] Optionally, the two ends of the stand are fixedly connected with a screw telescopic piece, the screw telescopic piece comprises an inner spiral steel pipe and an outer spiral steel pipe, the inner spiral steel pipe and the outer spiral steel pipe are threadedly connected, the inner spiral steel pipe is fixedly connected with the stand, and the outer spiral steel pipe is in a conical structure at one end close to the steel gasket, and the conical structure is arranged in the recess.

[0016] By adopting the above technical scheme, the screw telescopic piece is fixedly connected with the two ends of the stand, the length of the screw telescopic piece is adjusted by screwing the inner spiral steel pipe and the outer spiral steel pipe, the stand is firmly fixed, and the stand can be taken out from between the lower circular steel disc and the upper circular steel disc by shortening the length of the screw telescopic piece.

[0017] Optionally, one side of the limiting block is fixedly provided with a U-shaped insertion ring, and an L-shaped insertion handle is fixedly arranged on the driving motor in correspondence.

[0018] By adopting the above technical scheme, one side of the limiting block is fixedly arranged in the U-shaped insertion ring, and the L-shaped insertion handle is arranged in the U-shaped insertion ring from the opening end, so that the driving motor is fixed on one side of the limiting block, and the insertion mode facilitates the lifting of the limiting block on the pile machine head, and the position of the driving motor does not move, thereby further realizing the lifting of the double-disc barbell mechanism.

[0019] Optionally, a water pump is fixedly arranged on one side of the stand, a water spraying pipe is connected to the water pump, a fixing block is arranged on the water drill motor, a fixing hole is formed in the fixing block, and the water spraying pipe is in contact with the upper surface of the water drill cylinder through the fixing hole.

[0020] By adopting the above technical scheme, since the water spraying pipe is a hose, the fixing block is arranged on the water drill motor, the fixing hole is formed in the fixing block, and the water spraying pipe is in contact with the upper surface of the water drill cylinder through the fixing hole after being extended from the water pump, so that the nozzle of the water spraying pipe is always in contact with the upper surface of the water drill cylinder for spraying water, and the water flows to the water drill head by inertia, and the hands are freed from manually holding the water spraying pipe to spray water on the water drill cylinder.

[0021] In a second aspect, the application provides a construction method of a water drill device for forming a deep pile in a slightly weathered granite geological environment, which adopts the following technical scheme:

[0022] The construction method of the water drill device for forming a deep pile in a slightly weathered granite geological environment comprises the following steps: first, transporting the water drill device and a small pile machine to a construction site; second, determining the size of a foundation pit and spraying a boundary line of the foundation pit with paint; third, the pile machine finds a leveling position and falls down to stabilize itself; fourth, assembling the water drill device; fifth, welding a rotary limiting mechanism with the pile machine, adjusting a pile head, a double-disc dumbbell mechanism and the rotary limiting mechanism; sixth, starting the pile machine, moving the pile head downward, making the double-disc dumbbell mechanism top the ground, starting a water drill motor and a water pump, and starting the water drill head to drill; drilling the water drill cylinder to a specified depth, stopping drilling, prying off the drill core and clamping it out; seventh, pulling the pile head upward to make a large gear engage with a small gear, starting a drive motor through remote control, indirectly driving the circular steel pipe and the double-disc dumbbell mechanism to rotate synchronously, and then slowly rotating the water drill body around an axis, rotating to a next drilling position, and stopping the drive motor through remote control; eighth, moving the pile head downward again, disengaging the large gear from the small gear, making the double-disc dumbbell mechanism top the ground again, and starting the water drill head to drill; and ninth, repeating the above steps to drill a hole around the pile.

[0023] By adopting the above technical scheme, since the whole construction process is operated by the pile machine, the workers only need to assist the construction, without manually moving the water drill body, which is not only simple, time-saving and labor-saving, but also accurate in drilling, effectively shortening the construction time and reducing the burden of the workers.

[0024] Optionally, after drilling the boundary line of the foundation pit, the hole is drilled around the pile inside the boundary line until the center point of the foundation pit.

[0025] By adopting the above technical scheme, since the geological environment in the slightly weathered granite geological environment is hard, if the traditional method is adopted to first take out the outer core and then drill the core along the pile radius, the core rock mass is equally divided into multiple equal parts, a steel wedge is driven into the hole drilled along the radial direction of the pile foundation, the steel wedge is hammered with a sledgehammer, the rock mass is sequentially split, until the core rock mass of the layer is completely broken, and finally the electric hoist is used to remove the slag, which is obviously time-consuming and labor-intensive. The application adopts the method of first taking out the outer core and then repeatedly taking out the core in the inner core to continue drilling the core, which saves the cumbersome process of breaking the core rock mass and then removing the slag, and directly operates the machine to remove the core in the pile.

[0026] In summary, the application has at least one of the following beneficial technical effects:

[0027] 1. By vertically arranging double disc barbell mechanism on one side of water mill drill body, the double disc barbell mechanism is in contact with the ground, and the stand is arranged between the double disc barbell mechanism and in contact with the double disc barbell mechanism, so as to realize the precision of the stability of the water mill drill body during drilling. After drilling, the water mill drill cylinder is taken out, since the round steel pipe is fixedly connected with the double disc barbell mechanism and rotatably connected with the rotary limiting mechanism, when the driving motor is started, the round steel pipe drives the double disc barbell mechanism to rotate synchronously, and the round steel pipe rotates relative to the rotary limiting mechanism, so as to realize that the double disc barbell mechanism drives the water mill drill body to rotate and move around the shaft, so as to realize the purpose that the water mill drill body rotates and moves to the next drilling point after drilling, further realize the purpose of time and labor saving during displacement of the water mill drill in the construction process, enhance the precision of displacement, and reduce the labor load of workers.

[0028] 2. By connecting the inner insertion groove and the outer insertion groove, and the inner insertion groove aperture is larger than the outer insertion groove aperture, the insertion block is arranged in the inner insertion groove and cannot fall from the outer insertion groove, so as to realize the fixation of the insertion block in the limiting block, further realize that the connecting cylinder and the insertion block rotate synchronously in the outer insertion groove and the inner insertion groove with the rotation of the round steel pipe, and realize the purpose that the round steel pipe rotates relative to the limiting block.

[0029] 3. The method of the application, since the whole construction process is operated by the pile machine, workers only need to assist in construction beside, without manual displacement of the water mill drill body, not only simple operation, time and labor saving, but also precise drilling, which not only effectively shortens the construction time, but also reduces the burden of workers. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a water mill drill equipment for forming deep piles in slightly weathered granite geology and a construction method thereof.

[0031] Figure 2 It is a structural schematic diagram of a water mill drill equipment.

[0032] Figure 3 It is a structural schematic diagram of a screw rod telescopic part.

[0033] Figure 4 It is a structural schematic diagram of a rotary limiting mechanism and a driving motor.

[0034] Figure 5 It is a partial sectional view of a rotary limiting mechanism and a driving motor.

[0035] Figure 6 It is Figure 2 It is an enlarged schematic diagram of part A in FIG.

[0036] Figure 7 It is a construction method schematic diagram of a water mill drill equipment for forming deep piles in slightly weathered granite geology.

[0037] Explanation of reference signs: 1, water drill body; 11, water drill motor; 111, fixed block; 1111, fixed hole; 12, water drill cylinder; 13, water drill head; 14, stand; 15, screw telescopic part; 151, inner spiral steel pipe; 152, outer spiral steel pipe; 2, self-rotating device; 21, double disc dumbbell mechanism; 211, lower steel disc; 212, support rod; 213, upper steel disc; 22, rotation limiting mechanism; 221, limiting block; 2211, inner insertion groove; 2212, outer insertion groove; 2213, "U"-shaped insertion ring; 2214, connecting rod; 222, insertion block; 223, connecting cylinder; 2231, second insertion hole; 23, gear assembly; 231, large gear; 232, small gear; 24, driving motor; 241, "L"-shaped insertion handle; 3, steel pipe; 31, first insertion hole; 4, movable insertion pin; 5, steel gasket; 51, pit; 6, water pump; 61, water spraying pipe; 7, pile machine; 71, pile machine head. DETAILED DESCRIPTION

[0038] The following will be described in detail below with reference to the accompanying drawings. Figures 1-7 The present application is further described in detail.

[0039] The embodiment of the present application discloses a water drill equipment for forming deep pile in slightly weathered granite geology and a construction method thereof.

[0040] Reference Figure 1 And Figure 2 A water drill equipment for forming deep pile in slightly weathered granite geology comprises a water drill body 1 vertically arranged on the ground, wherein the water drill body 1 comprises a water drill motor 11, a water drill cylinder 12, a water drill head 13 and a stand 14; the water drill cylinder 12 is fixedly connected with an output shaft of the water drill motor 11; the water drill head 13 is fixedly connected with one end of the water drill cylinder 12 away from the water drill motor 11; the water drill motor 11, the water drill cylinder 12 and the water drill head 13 are coaxially connected; the stand 14 is vertically arranged on one side of the water drill cylinder 12; the water drill motor 11 is slidingly connected with the stand 14 along the vertical direction of the stand 14; a switch is arranged on the water drill motor 11; the water drill motor 11 can be controlled to slide along the vertical direction of the stand 14 by starting and stopping the switch; and the starting and stopping of the water drill motor 11 is controlled by a remote control in a control room of the pile machine 7.

[0041] The water mill drilling equipment for forming deep pile in slightly weathered granite geology further comprises a self-rotation device 2 arranged on one side of the column 14, the self-rotation device comprising a double-disc dumbbell mechanism 21, a rotation limiting mechanism 22, a gear assembly 23 and a driving motor 24, the double-disc dumbbell mechanism 21 being arranged vertically and in parallel with the column 14, the column 14 being arranged between the double-disc dumbbell mechanism 21 and abutting against the double-disc dumbbell mechanism 21 at both ends of the column 14, the upper end of the double-disc dumbbell mechanism 21 being fixedly connected with the round steel pipe 3, the rotation limiting mechanism 22 being rotatably connected with the end of the round steel pipe 3 away from the double-disc dumbbell mechanism 21, the driving motor 24 being arranged on one side of the rotation limiting mechanism 22 and being buckled with the rotation limiting mechanism 22, the end of the rotation limiting mechanism 22 away from the round steel pipe 3 being fixedly connected with a connecting rod 2214, and the connecting rod 2214 being welded with the pile head 71. The gear assembly 23 comprises a large gear 231 and a small gear 232, the large gear 231 being sleeved on the round steel pipe 3 and being fixedly connected with the round steel pipe 3, and the small gear 232 being sleeved on the output shaft of the driving motor 24 and being fixedly connected with the output shaft of the driving motor 24, the large gear 231 and the small gear 232 being engaged.

[0042] The double-disc dumbbell mechanism 21 comprises a lower round steel disc 211, a support rod 212 and an upper round steel disc 213, the lower round steel disc 211 being arranged on the ground leveling position of the foundation pit, the support rod 212 being arranged vertically and being fixedly connected with the lower round steel disc 211 and the upper round steel disc 213 at both ends of the support rod 212, the round steel pipe 3 being fixedly arranged on the side of the upper round steel disc 213 away from the support rod 212, and the column 14 being arranged between the lower round steel disc 211 and the upper round steel disc 213 and abutting against the lower round steel disc 211 and the upper round steel disc 213.

[0043] The side of the lower round steel disc 211 and the upper round steel disc 213 facing the column 14 is fixedly provided with a steel gasket 5, the steel gasket 5 being provided with a pit 51, and the both ends of the column 14 being arranged in the pit 51.

[0044] The side of the column 14 is fixedly provided with a water pump 6, the water pump 6 being connected with a water spraying pipe 61, the water mill drilling motor 11 being provided with a fixed block 111, the fixed block 111 being provided with a fixed hole 1111 penetrating through the fixed block 111, and the water spraying pipe 61 penetrating through the fixed hole 1111 and being in contact with the upper surface of the water mill drilling cylinder 12.

[0045] Referring to Figure 2 and Figure 3 , the both ends of the column 14 are fixedly connected with a screw telescopic piece 15, the screw telescopic piece 15 comprising an inner spiral steel pipe 151 and an outer spiral steel pipe 152, the inner spiral steel pipe 151 being provided with an inner screw hole, the outer spiral steel pipe 152 being provided with an outer screw thread corresponding to the inner spiral steel pipe 151 at the end close to the inner spiral steel pipe 151, the inner spiral steel pipe 151 and the outer spiral steel pipe 152 being screw-connected, the inner spiral steel pipe 151 being fixedly connected with the column 14, the end of the outer spiral steel pipe 152 close to the steel gasket 5 being in a conical structure, and the conical structure being arranged in the pit 51.

[0046] Referring to Figure 4 and Figure 5 , the rotation limiting mechanism 22 comprises a limiting block 221, a plug-in block 222 and a connecting cylinder 223, the limiting block 221 is provided with a circular inner plug-in groove 2211 and an outer plug-in groove 2212 on the side facing the gear wheel 231, the inner plug-in groove 2211 and the outer plug-in groove 2212 are communicated and the aperture of the inner plug-in groove 2211 is larger than that of the outer plug-in groove 2212, the plug-in block 222 is fixedly connected with the connecting cylinder 223, the plug-in block 222 is arranged in the inner plug-in groove 2211 and the diameter of the plug-in block 222 is consistent with the aperture of the inner plug-in groove 2211, the connecting cylinder 223 is arranged in the outer plug-in groove and the diameter of the connecting cylinder 223 is consistent with the aperture of the outer plug-in groove, and the circular steel pipe 3 is arranged in the connecting cylinder 223 and is plugged with the connecting cylinder 223.

[0047] The circular steel pipe 3 is provided with a first plug-in hole 31 penetrating the cross section of the circular steel pipe 3 at one end close to the connecting cylinder 223, the connecting cylinder 223 is provided with a second plug-in hole 2231 corresponding to the first plug-in hole 31, and the first plug-in hole 31 and the second plug-in hole 2231 are arranged with a movable plug-in 4.

[0048] Referring to Figure 6 , the limiting block 221 is fixedly provided with a “U” type plug-in ring 2213 on one side, the driving motor 24 is fixedly provided with an “L” type plug-in handle 241 corresponding to the “U” type plug-in ring 2213, the “L” type plug-in handle 241 is open downward, and the “L” type plug-in handle 241 is plugged in the “U” type plug-in ring 2213 through the opening.

[0049] Referring to Figure 7 , a construction method of a water mill drilling equipment for forming a deep pile in a slightly weathered granite geological formation, characterized in that it comprises the following steps:

[0050] Firstly, the water mill drilling equipment and a small pile machine 7 are transported to the construction site.

[0051] Secondly, the size of the foundation pit is determined, and the boundary line of the foundation pit is sprayed with paint.

[0052] Thirdly, the pile machine 7 finds a leveling position and falls down to make itself stable.

[0053] Fourthly, the water mill drilling equipment is assembled, the stand 14 is placed between the upper circular steel disc 213 and the lower circular steel disc 211, the conical structure of the outer spiral steel pipe 152 at both ends of the stand 14 is arranged in the pit 51, the inner threaded steel pipe is rotated upward, the stand 14 is clamped and fixed on the lower circular steel disc 211 and the upper circular steel disc 213, the circular steel pipe 3 is arranged in the connecting cylinder 223, the movable plug-in 4 is arranged through the first plug-in hole 31 and the second plug-in hole 2231, and the circular steel pipe 3 and the connecting cylinder 223 are connected, and finally the plug-in handle of the driving motor 24 is plugged in the plug-in ring of the limiting block 221.

[0054] Fifth step, rotating limiting mechanism 22 and pile machine 7 welding, pile machine head 71 keep vertical, so that double disc barbell mechanism 21, rotating limiting mechanism 22 and pile machine head 71 in the same axis, vertical column 14 and the axis parallel.

[0055] Sixth step, start pile machine 7, pile machine head 71 down, so that double disc barbell mechanism 21 and ground top, start water mill drill motor 11 and water pump 6, water mill drill head 13 drilling; water mill drill cylinder 12 drill to the specified depth, stop drilling, pry broken drill core after clip out.

[0056] Seventh step, pull up pile machine head 71, so that gear 231 and pinion 232 meshing, through remote control start drive motor 24, drive motor 24 drive pinion 232 rotation, pinion 232 drive gear 231 rotation, gear 231 drive round steel pipe 3 and double disc barbell mechanism 21 synchronous rotation, and then make water mill drill body 1 rotate slowly around the axis, rotate to the next drilling position, remote control drive motor 24 stop rotation.

[0057] Eighth step, move down pile machine head 71 again, gear 231 and pinion 232 disengaged, pile machine head 71 make double disc barbell mechanism 21 and ground top again, water mill drill head 13 drilling.

[0058] Ninth step, repeat the above steps, ring pile drilling, drill the boundary line of foundation pit, continue to drill in the boundary line, until the center point of foundation pit. During the use of horizontal and vertical displacement capacity of pile machine 7, make the use of water mill drill body further expand, is beneficial to the smaller diameter of deep pile foundation.

[0059] The application is very suitable for hard granite geology, not suitable for use of blasting, small wheel or track type pile machine 7 can reach, smaller diameter of deep pile foundation, can greatly improve the construction quality of water mill drill body 1, construction efficiency, greatly reduce the labor load.

[0060] The above are the preferred embodiments of the application, not limited to the protection scope of the application, therefore: all equivalent changes made according to the structure, shape, principle of the application, should be covered in the protection scope of the application.

Claims

1. A water-powered drilling device for deep pile drilling in slightly weathered granite geology, comprising a water-powered drilling body (1) vertically disposed on the ground, the water-powered drilling body (1) comprising a water-powered drilling motor (11), a water-powered drilling cylinder (12), a water-powered drilling bit (13), and a column (14), the water-powered drilling cylinder (12) being fixedly connected to the output shaft of the water-powered drilling motor (11), the water-powered drilling bit (13) being fixedly connected to the end of the water-powered drilling cylinder (12) away from the water-powered drilling motor (11), the water-powered drilling motor (11), the water-powered drilling cylinder (12), and the water-powered drilling bit (13) being coaxially connected, the column (14) being vertically disposed on one side of the water-powered drilling cylinder (12), and the water-powered drilling motor (11) being slidably connected to the column (14) along the vertical direction of the column (14), characterized in that, It also includes a self-rotating device (2) set on one side of the column (14). The self-rotating device (2) includes a double-disc barbell mechanism (21), a rotation limiting mechanism (22), a gear assembly (23), and a drive motor (24). The double-disc barbell mechanism (21) is set vertically and parallel to the column (14). The column (14) is set between the double-disc barbell mechanisms (21) and both ends of the column (14) abut against the double-disc barbell mechanisms (21). A round steel pipe (3) is fixedly connected to the upper end of the double-disc barbell mechanism (21). The rotation limiting mechanism (22) and the round steel pipe (3) are located away from the end of the double-disc barbell mechanism (21). Rotary connection, the drive motor (24) is located on one side of the rotation limiting mechanism (22) and is fastened to the rotation limiting mechanism (22), the end of the rotation limiting mechanism (22) away from the round steel pipe (3) is fixedly connected to the pile driver head (71); the gear assembly (23) includes a large gear (231) and a small gear (232), the large gear (231) is sleeved on the round steel pipe (3) and fixedly connected to the round steel pipe (3), the small gear (232) is sleeved on the output shaft of the drive motor (24) and fixedly connected to the output shaft of the drive motor (24), the large gear (231) and the small gear (232) mesh; The double-disc barbell mechanism (21) includes a lower circular steel disc (211), a support rod (212), and an upper circular steel disc (213). The lower circular steel disc (211) is placed at the leveling position of the foundation pit ground. The support rod (212) is vertically arranged, and the two ends of the support rod (212) are fixedly connected to the lower circular steel disc (211) and the upper circular steel disc (213) respectively. The circular steel pipe (3) is fixedly arranged on the side of the upper circular steel disc (213) away from the support rod (212). The column (14) is arranged between the lower circular steel disc (211) and the upper circular steel disc (213) and abuts against the lower circular steel disc (211) and the upper circular steel disc (213). Steel shims (5) are fixedly installed on the side of the lower circular steel plate (211) and the upper circular steel plate (213) facing the column (14). The steel shims (5) have recesses (51) and the two ends of the column (14) are placed in the recesses (51). Both ends of the column (14) are fixedly connected to screw telescopic components (15). The screw telescopic component (15) includes an inner spiral steel pipe (151) and an outer spiral steel pipe (152). The inner spiral steel pipe (151) and the outer spiral steel pipe (152) are threaded together. The inner spiral steel pipe (151) is fixedly connected to the column (14). The outer spiral steel pipe (152) has a conical structure at the end near the steel gasket (5). The conical structure is placed in the recess (51).

2. The water-powered drilling equipment for deep pile drilling in slightly weathered granite geology according to claim 1, characterized in that, The rotation limiting mechanism (22) includes a limiting block (221), a plug-in block (222), and a connecting cylinder (223). The limiting block (221) has a circular inner slot (2211) and an outer slot (2212) on the side facing the large gear (231). The inner slot (2211) and the outer slot (2212) are connected, and the diameter of the inner slot (2211) is larger than the diameter of the outer slot (2212). The plug-in block (2211)... 2) The connecting tube (223) is fixedly connected to the connecting tube (223). The plug-in block (222) is placed in the inner slot (2211) and the diameter of the plug-in block (222) is consistent with the diameter of the inner slot (2211). The connecting tube (223) is placed in the outer slot (2212) and the diameter of the connecting tube (223) is consistent with the diameter of the outer slot (2212). The round steel tube (3) is inserted into the connecting tube (223) and plugged into the connecting tube (223).

3. The water-powered drilling equipment for deep pile drilling in slightly weathered granite geology according to claim 2, characterized in that, The round steel pipe (3) has a first pin hole (31) that penetrates the cross-section of the round steel pipe (3) at one end near the connecting cylinder (223). The connecting cylinder (223) has a corresponding second pin hole (2231) that corresponds to the first pin hole (31). A movable pin (4) is inserted into the first pin hole (31) and the second pin hole (2231).

4. The water-powered drilling equipment for deep pile drilling in slightly weathered granite geology according to claim 2, characterized in that, A U-shaped insert ring (2213) is fixedly provided on one side of the limiting block (221), and an L-shaped insert (241) is fixedly provided on the drive motor (24). The L-shaped insert (241) is inserted into the U-shaped insert ring (2213).

5. The water-powered drilling equipment for deep pile drilling in slightly weathered granite geology according to claim 1, characterized in that, A water pump (6) is fixedly installed on one side of the column (14). A water spray pipe (61) is connected to the water pump (6). A fixing block (111) is installed on the water drill motor (11). A fixing hole (1111) is opened on the fixing block (1111). The water spray pipe (61) passes through the fixing hole (1111) and contacts the upper surface of the water drill cylinder (12).

6. The construction method of a water-powered drilling equipment for deep pile drilling in slightly weathered granite geology according to claim 5, characterized in that, Includes the following steps: The first step is to transport the water-grinding drill equipment and small pile driver (7) to the construction site; the second step is to determine the size of the pile hole and paint the boundary line of the foundation pit; the third step is to find the leveling position of the pile driver (7) and place it down to make itself stable; the fourth step is to assemble the water-grinding drill equipment; the fifth step is to weld the rotation limit mechanism (22) to the pile driver (7) and adjust the pile driver head (71), the double-disc barbell mechanism (21) and the rotation limit mechanism (22); the sixth step is to start the pile driver (7), with the pile driver head (71) facing down so that the double-disc barbell mechanism (21) is firmly against the ground, start the water-grinding drill motor (11) and water pump (6), and start the water-grinding drill bit (13); the water-grinding drill cylinder (12) drills to the specified depth, stops drilling and removes the drill core after breaking it with a crowbar; Step 7: Pull the pile driver head (71) upward to engage the large gear (231) and small gear (232), start the drive motor (24) remotely, and drive the round steel pipe (3) and double-disc barbell mechanism (21) to rotate synchronously, thereby causing the water drill body (1) to rotate slowly around the axis. When the next drilling position is reached, the remote drive motor (24) stops. Step 8: Move the pile driver head (71) downward again, disengage the large gear (231) and small gear (232), and the pile driver head (71) re-engages the double-disc barbell mechanism (21) with the ground. The water drill bit (13) starts drilling. Step 9: Repeat the above steps to drill the ring pile.

7. The construction method of a water-powered drilling equipment for deep pile drilling in slightly weathered granite geology according to claim 6, characterized in that, After drilling the boundary line of the foundation pit, continue drilling the ring pile pit inside the boundary line until the center point of the foundation pit is reached.

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