A guide drilling device for bored piles in complex geology and its construction method

Abstract

The present invention discloses a guide drilling device for bored piles in complex geological conditions and a construction method thereof, which belongs to the field of bridge construction. The device comprises a base plate, a grounding plate provided at the outward end of a resistance rod, and a pressure steel ball provided at the inward end of the resistance rod, two pressure sliders slidably mounted on a pressing guide rail, and inclined blocks fitted on both sides of the pressure slider are provided, and the pressure sliders are connected to a pressure assembly. When the present invention is in use, a cutting motor drives an extension belt and a driven turntable to rotate by driving a mounting plate, and a stereoscopic tube rotates along with the driven turntable, and then the interlaced square rod inside the stereoscopic tube and the cutting disk at its bottom are pressed together on the ground to perform a rotary hole-making operation, and at the same time, a telescopic cylinder drives a notch frame to rise and fall, and the notch frame drives the lifting disk at the top of the interlaced square rod to descend a short distance, and the distance that the interlaced square rod descends is the drilling depth of the cutting disk, thereby achieving an efficient hole-making effect.

Description

Technical Field

[0001] The present invention relates to the field of bridge construction, and in particular to a guide drilling device for bored piles in complex geological conditions and a construction method thereof. Background Art

[0002] With the development of industrial technology, modern bridge construction has become more and more perfect. During the construction process, it is necessary to drill holes in the ground to assemble the structure. When drilling holes in hard ground, excavation cannot be used, so drilling is required. The previous drilling device structure is relatively complex and requires a lot of operation.

[0003] For example, the bored pile construction equipment disclosed in Patent No. 201420640037.6 includes a portal frame, a crossbeam is provided on the portal frame, and a drill rod is provided on the crossbeam. The characteristic is that the lower part of the drill rod is connected to a steel sleeve, the diameter of the steel sleeve is equal to the designed diameter of the bored pile, and a plurality of alloy drill bits are welded on the circumference of the bottom of the steel sleeve. It solves the problem of limited construction height and the problem that when drilling the pile foundation, the geology traversed is rock strata or alternating strata of soft soil and rock strata, and large-scale equipment such as rotary drilling or impact drilling cannot be used. It has the characteristics of fast drilling speed and no vibration, and is suitable for bored pile construction equipment in specific environments. It has the functions of drilling in low clearance and complex geology, and can be used for bored pile construction in places with limited clearance height, such as under high-speed railway and highway bridges, in culverts, and in rock-embedded geological conditions.

[0004] The device still has defects when in use. First, the drilling method of the device is relatively slow, and the inner wall of the hole is not smooth enough, which affects the work efficiency and the quality of the hole. Second, it is troublesome to move the work station of the device. If there are many holes on the ground, the work station needs to be moved repeatedly. Summary of the Invention

[0005] The purpose of the present invention is to address the deficiencies of the existing technology and provide a complex geological bored pile guide drilling device and a construction method thereof. When the device is in use, the base plate is pushed to the construction site, and then the cutting motor drives the extension belt and the driven turntable to rotate by driving the mounting plate, and the three-dimensional tube rotates together with the driven turntable, and then the interpenetrating square rods inside the three-dimensional tube and the cutting disk at its bottom are pressed on the ground for rotary hole opening operation. At the same time, the telescopic cylinder drives the notch frame to rise and fall, and the notch frame drives the lifting disk at the top of the interpenetrating square rod to descend a short distance. The distance that the interpenetrating square rod descends is the drilling depth of the cutting disk. The drilled powder will reach the top of the cutting disk from the discharge hole, and the base plate goes in a straight line to punch a row of holes on the ground, achieving the effect of efficient hole opening.

[0006] In order to solve the above problems, the present invention provides the following technical solutions: a guide drilling device for bored piles in complex geological conditions, comprising a base plate, four casters are provided at the bottom corners of the base plate, and two sets of hinge blocks are provided at the bottom end of the base plate, a resistance rod is rotatably installed in the middle of the hinge block, a grounding plate is provided at the outward end of the resistance rod, and a pressure steel ball is provided at the inward end of the resistance rod, a pressing guide rail is provided in the middle of the base plate, two pressure sliders are slidably installed on the pressing guide rail, inclined blocks that fit on the pressure steel ball are provided on both sides of the pressure slider, the pressure slider is connected to the pressure assembly, and the base plate is provided with a plurality of casters. An arch bridge and a grinding bridge are provided at the top of the table plate, a cutting assembly is provided in the middle of the arch bridge, and a grinding assembly is provided in the middle of the grinding bridge. The cutting assembly includes a planar shaft seat fixed on the top of the arch bridge, and an interpenetrating square rod is rotatably inserted into the inner side of the planar shaft seat. A three-dimensional tube is rotatably inserted into the side wall of the base plate, and a channel square hole matching the interpenetrating square rod is provided in the center of the three-dimensional tube. The three-dimensional tube is connected to the torsional power assembly, and the interpenetrating square rod is connected to the lifting power assembly. A cutting disk is provided at the bottom end of the interpenetrating square rod, and a plurality of cutting particles are provided at the bottom end of the cutting disk. A discharge hole is also provided on the cutting disk.

[0007] Furthermore, the pressure assembly includes a connecting bridge, both ends of which are connected to the pressure slider, the connecting bridge is connected to the output rod of the electric push rod, the electric push rod is fixed on the bottom surface of the base plate, and the pressure steel ball is connected to the bottom surface of the base plate through a tension rubber band.

[0008] Furthermore, the torsional power assembly includes a driven turntable, which is fixed at the top port of the stereoscopic tube. A driving disc is provided on one side of the driven turntable. The driving disc and the driven turntable are connected by an extended belt, and the driving disc is installed on the output end of the cutting motor.

[0009] Furthermore, the lifting power assembly includes a telescopic cylinder, a notch frame is installed at the output end of the telescopic cylinder, a lifting plate is provided at the top end of the interlaced square rod, the notch frame is bridged on the lifting plate, and organic oil is applied between the notch frame and the lifting plate.

[0010] Furthermore, the grinding assembly includes a sleeve fixed to the top of the grinding bridge, a grinding rod movably inserted in the middle of the sleeve, a grinding head is provided at the bottom end of the grinding rod, an auxiliary arch bridge is provided at the top of the grinding bridge, and a stepper motor is provided at the top of the auxiliary arch bridge, a vertical square rod is provided at the output end of the stepper motor, a rectangular channel matching the vertical square rod is provided in the center of the grinding rod, and the grinding rod is connected to the telescopic assembly.

[0011] Furthermore, the grinding head includes a telescopic tube at the bottom end of the grinding rod, a telescopic rod is movably inserted into the inner side of the telescopic tube, a grinding plate is provided at the end of the telescopic rod, and a return spring is sheathed on the outer side of the telescopic tube and the telescopic rod, one end of the return spring is connected to the grinding rod, and the other end of the return spring is connected to the side wall of the grinding plate.

[0012] Furthermore, the telescopic assembly includes a locking cylinder fixed to the bottom end of the base plate, a locking round rod is installed at the output end of the locking cylinder, a clamping piece is fixedly provided on the outer side of the polishing rod, an annular groove is provided in the middle of the clamping piece, and the locking round rod is inserted into the annular groove.

[0013] Furthermore, a layer of grinding stone is installed on the outer side of the grinding plate, and an inclined plate is provided at the bottom end of the grinding plate, and the inclined plate and the axis of the grinding rod form an angle of sixty degrees.

[0014] Furthermore, a layer of rubber pad is attached to the bottom surface of the grounding sheet, and a plurality of rubber particles are arranged at the bottom end of the rubber pad.

[0015] Further, the following steps are included:

[0016] S1. The base plate is pushed to the construction site. The cutting motor then drives the extension belt and driven turntable through the drive plate. The three-dimensional tube rotates with the driven turntable, and the interlaced square rods inside the three-dimensional tube and the cutting disk at its bottom are pressed against the ground to perform the rotary drilling operation. At the same time, the telescopic cylinder drives the notch frame to rise and fall, which drives the lifting disk at the top of the interlaced square rods to descend a short distance. The distance the interlaced square rods descend is the drilling depth of the cutting disk. The drilled powder will reach the top of the cutting disk through the discharge hole, and the base plate will move in a straight line to drill a row of holes on the ground.

[0017] S2. After a row of holes is drilled on the floor, the base plate is pushed back to the starting position, and the end of the grinding rod is inserted into the hole. The stepper motor drives the vertical rod and the grinding rod to rotate. The locking cylinder drives the clamping piece to rise and fall through the locking rod. The grinding rod can be raised and lowered while rotating. At this time, the cutting disc reaches the next linear station for drilling. Then, the cutting disc and grinding rod can work simultaneously. The grinding disc on the outside of the grinding rod will fit on the inner wall of the hole for grinding.

[0018] S3. Every time the base plate moves, the electric push rod drives the connecting bridge to move a short distance, and then the two pressure sliders will move a short distance along the pressing guide rail. The inclined blocks on both sides of the pressure slider will press on the pressure steel ball to make the resistance rod start to twist, and the grounding plate at the end of the resistance rod can be lifted off the ground. Every time the base plate stops, the pressure slider withdraws to its original position, and the resistance rod is reversed by the tension rubber band, so that the grounding plate is pressed against the ground by the elastic force.

[0019] Beneficial effects of the present invention:

[0020] First, when the device is in use, the base plate is pushed to the construction site, and then the cutting motor drives the extension belt and the driven turntable to rotate by driving the mounting plate, and the three-dimensional tube rotates with the driven turntable, and then the interlaced square rods inside the three-dimensional tube and the cutting disk at its bottom will be pressed on the ground for rotating hole opening operations. At the same time, the telescopic cylinder drives the notch frame to rise and fall, and the notch frame drives the lifting disk at the top of the interlaced square rod to drop a short distance. The distance that the interlaced square rod drops is the drilling depth of the cutting disk, and the punched powder will reach the top of the cutting disk from the discharge hole. The base plate goes in a straight line to punch a row of holes on the ground, achieving the effect of efficient hole opening.

[0021] Secondly, after a row of holes are opened on the ground, the base plate is pushed back to the starting position, and the end of the grinding rod is inserted into the hole. While the stepper motor drives the vertical square rod and the grinding rod to rotate, the locking cylinder drives the clamping piece to rise and fall through the locking round rod. The grinding rod can be raised and lowered while rotating. At this time, the cutting disc reaches the next linear station for hole opening operation, and then the cutting disc and the grinding rod can work at the same time. The grinding piece on the outside of the grinding rod will fit on the inner wall of the channel for grinding operation, and the inner wall of the hole can be polished smooth.

[0022] Third, every time the base plate moves, the electric push rod drives the connecting bridge to move a short distance, and then the two pressure sliders will move a short distance along the pressing guide rail. The inclined blocks on both sides of the pressure slider will press on the pressure steel ball to make the resistance rod start to twist, and the grounding plate at the end of the resistance rod can be lifted up and leave the ground. Every time the base plate stops, the pressure slider withdraws to its original position, and the resistance rod twists in the opposite direction through the tension rubber band to press the grounding plate on the ground through the action of elastic force, thereby achieving the effect of convenient mobile workstation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the present invention.

[0024] Figure 2 It is a schematic diagram of a side view of the present invention.

[0025] Figure 3 It is a schematic diagram of the present invention viewed from above.

[0026] Figure 4 Schematic diagram of the arch bridge of the present invention.

[0027] Figure 5 Schematic diagram of the grinding bridge of the present invention.

[0028] Figure 6 Schematic diagram of the press-fit guide rail of the present invention.

[0029] Figure 7 Schematic diagram of the cutting rod of the present invention.

[0030] Figure 8 Schematic diagram of the cutting disc of the present invention.

[0031] Figure 9 Schematic diagram of the polishing rod of the present invention.

[0032] Figure 10 Schematic diagram of the grinding sheet of the present invention.

[0033] Description of reference numerals:

[0034] Base plate 1, arch bridge 2, plane shaft seat 201, three-dimensional tube 202, driven turntable 203, drive plate 204, cutting motor 205, extension belt 206, lifting plate 207, telescopic cylinder 208, notch frame 209, interlaced square rod 210, cutting disc 211, discharge hole 212, cutting particles 213, grinding bridge 3, shaft sleeve 301, grinding rod 302, clamping piece 303, locking force Cylinder 304, locking rod 305, grinding plate 306, tilting plate 307, telescopic tube 308, telescopic rod 309, return spring 310, auxiliary arch bridge 4, stepping motor 401, upright square rod 402, caster 5, hinge block 6, contact rod 7, grounding plate 701, pressure steel ball 702, pressing guide rail 8, pressure slider 801, connecting bridge 802, electric push rod 803, inclined block 804. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] Reference Figures 1 to 10The complex geological bored pile guide drilling device shown in the figure includes a base plate 1, four casters 5 are provided at the bottom corners of the base plate 1, and two groups of hinge blocks 6 are provided at the bottom end of the base plate 1, a resistance rod 7 is rotatably installed in the middle of the hinge block 6, the outward end of the resistance rod 7 is provided with a grounding plate 701, and the inward end of the resistance rod 7 is provided with a pressure steel ball 702, a pressing guide rail 8 is provided in the middle of the base plate 1, two pressure sliders 801 are slidably installed on the pressing guide rail 8, and inclined blocks 804 that fit on the pressure steel ball 702 are provided on both sides of the pressure slider 801, and the pressure slider 801 is connected to the pressure assembly, and an arch bridge 2 and a grinding bridge 3 are provided at the top of the base plate 1, a cutting assembly is provided in the middle of the arch bridge 2, and a grinding assembly is provided in the middle of the grinding bridge 3. The cutting assembly includes a plane shaft seat 201 fixed at the top of the arch bridge 2, and the plane shaft seat 20 1 is rotated and inserted with an interpenetrating square rod 210, and a three-dimensional tube 202 is rotated and inserted on the side wall of the base plate 1. The center of the three-dimensional tube 202 is provided with a channel square hole matching the interpenetrating square rod 210, the three-dimensional tube 202 is connected to the torsion power component, and the interpenetrating square rod 210 is connected to the lifting power component. The bottom end of the interpenetrating square rod 210 is provided with a cutting disk 211, and the bottom end of the cutting disk 211 is provided with a plurality of cutting particles 213. The cutting disk 211 is also provided with a discharge hole 212. Every time the base plate 1 stops, the resistance rod 7 starts to twist to lock the grounding plate 701 on the ground, and the three-dimensional tube 202 starts to twist and drives the interpenetrating square rod 210 inside it to rotate. The interpenetrating square rod 210 and the cutting disk 211 at its bottom start to perform a hole-opening operation on the ground. The interpenetrating square rod 210 can also be lifted and inserted inside the three-dimensional tube 202 while rotating.

[0038] like Figure 1 、 2 As shown in Figure 3, the pressure component includes a connecting bridge 802, both ends of the connecting bridge 802 are connected to the pressure slider 801, the connecting bridge 802 is connected to the output rod of the electric push rod 803, the electric push rod 803 is fixed on the bottom surface of the base plate 1, and the pressure steel ball 702 is connected to the bottom surface of the base plate 1 through a tension rubber band. Every time the base plate 1 moves, the electric push rod 803 drives the connecting bridge 802 to move a small distance, and then the two pressure sliders 801 will move a small distance along the pressing guide rail 8, and the inclined blocks 804 on both sides of the pressure slider 801 will press on the pressure steel ball 702 to make the resistance rod 7 start to twist, and the grounding plate 701 at the end of the resistance rod 7 can be lifted up and leave the ground. Every time the base plate 1 stops, the pressure slider 801 withdraws to its original position, and the resistance rod 7 is reversely twisted by the tension rubber band to make the grounding plate 701 pressed on the ground by the action of elastic force.

[0039] like Figure 4As shown, the torsional power assembly includes a driven turntable 203, which is fixed at the top port of the three-dimensional tube 202. A driving disc 204 is provided on one side of the driven turntable 203. The driving disc 204 and the driven turntable 203 are connected by an extension belt 206. The driving disc 204 is installed on the output end of the cutting motor 205. The cutting motor 205 drives the extension belt 206 and the driven turntable 203 to rotate through the driving disc 204. The three-dimensional tube 202 rotates together with the driven turntable 203, and the cutting motor 205 increases the power of rotary cutting.

[0040] like Figure 4 、 7 As shown in Figure 8, the lifting power assembly includes a telescopic cylinder 208, a notch frame 209 is installed at the output end of the telescopic cylinder 208, a lifting plate 207 is provided at the top of the interlaced square rod 210, the notch frame 209 is bridged on the lifting plate 207, and organic oil is applied between the notch frame 209 and the lifting plate 207. At the same time, the telescopic cylinder 208 drives the notch frame 209 to rise and fall, and the notch frame 209 drives the lifting plate 207 at the top of the interlaced square rod 210 to descend a short distance. The distance that the interlaced square rod 210 descends is the punching depth of the cutting disk 211.

[0041] like Figure 8 As shown, the grinding assembly includes a sleeve 301 fixed to the top of the grinding bridge 3, a grinding rod 302 is movably inserted in the middle of the sleeve 301, and a grinding head is provided at the bottom end of the grinding rod 302. The top of the grinding bridge 3 is provided with an auxiliary arch bridge 4, and the top of the auxiliary arch bridge 4 is provided with a stepping motor 401. The output end of the stepping motor 401 is provided with a vertical square rod 402, and the center of the grinding rod 302 is provided with a rectangular channel matching the vertical square rod 402. The grinding rod 302 is connected to the telescopic assembly. After the hole is opened on the ground, the grinding rod 302 is inserted into the hole for grinding. The stepping motor 401 drives the vertical square rod 402 and the grinding rod 302 to rotate. The grinding rod 302 can also move up and down relative to the vertical square rod 402 when twisting, so that the grinding rod 302 can grind deeper holes.

[0042] like Figure 8 、 9 As shown in Figure 10, the grinding head includes a telescopic tube 308 at the bottom end of the grinding rod 302, a telescopic rod 309 is movably inserted into the inner side of the telescopic tube 308, and a grinding plate 306 is provided at the end of the telescopic rod 309. A return spring 310 is provided on the outer side of the telescopic tube 308 and the telescopic rod 309, one end of the return spring 310 is connected to the grinding rod 302, and the other end of the return spring 310 is connected to the side wall of the grinding plate 306. The grinding plate 306 applies pressure to the outside through the elastic force of the return spring 310, and the grinding plate 306 can remove particulate impurities on the inner wall of the channel.

[0043] like Figure 5 As shown, the telescopic assembly includes a locking cylinder 304 fixed to the bottom end of the base plate 1, and a locking round rod 305 is installed at the output end of the locking cylinder 304. A clamping piece 303 is fixedly provided on the outer side of the polishing rod 302, and an annular groove is provided in the middle of the clamping piece 303. The locking round rod 305 is inserted into the annular groove. The locking cylinder 304 drives the clamping piece 303 to rise and fall through the locking round rod 305, and the polishing rod 302 can be lifted and lowered while rotating.

[0044] like Figure 10 As shown, a layer of grinding stone is installed on the outside of the grinding plate 306, and an inclined plate 307 is provided at the bottom end of the grinding plate 306. The inclined plate 307 and the axis of the grinding rod 302 form a sixty-degree angle, and the inclined plate 307 can be more easily inserted into the port of the channel.

[0045] like Figure 3 As shown, a layer of rubber pad is attached to the bottom surface of the grounding sheet 701, and a plurality of rubber particles are provided at the bottom end of the rubber pad. The rubber particles on the rubber pad have better grip and prevent the base plate 1 from slipping during construction.

[0046] The following steps are involved:

[0047] S1. The base plate 1 is pushed to the construction site, and then the cutting motor 205 drives the extension belt 206 and the driven turntable 203 to rotate by driving the loading plate 204. The three-dimensional tube 202 rotates together with the driven turntable 203, and then the interpenetrating square rod 210 inside the three-dimensional tube 202 and the cutting disk 211 at its bottom are pressed on the ground to perform a rotary hole-making operation. At the same time, the telescopic cylinder 208 drives the notch frame 209 to rise and fall, and the notch frame 209 drives the lifting disk 207 at the top of the interpenetrating square rod 210 to descend a short distance. The distance that the interpenetrating square rod 210 descends is the drilling depth of the cutting disk 211. The drilled powder will reach the top of the cutting disk 211 from the discharge hole 212, and the base plate 1 goes in a straight line to make a row of holes on the ground;

[0048] S2. After a row of holes is drilled on the ground, the base plate 1 is pushed back to the starting position and the end of the grinding rod 302 is inserted into the hole. The stepper motor 401 drives the vertical rod 402 and the grinding rod 302 to rotate. At the same time, the locking cylinder 304 drives the clamping piece 303 to rise and fall through the locking round rod 305. The grinding rod 302 can be raised and lowered while rotating. At this time, the cutting disc 211 reaches the next linear station for drilling operation. Then, the cutting disc 211 and the grinding rod 302 can work simultaneously. The grinding piece 306 on the outside of the grinding rod 302 will fit on the inner wall of the hole for grinding operation.

[0049] S3. Every time the base plate 1 moves, the electric push rod 803 drives the connecting bridge 802 to move a short distance, and then the two pressure sliders 801 will move a short distance along the pressing guide rail 8. The inclined blocks 804 on both sides of the pressure slider 801 will press on the pressure steel ball 702 to make the resistance rod 7 start to twist, and the grounding plate 701 at the end of the resistance rod 7 can be lifted up and leave the ground. Every time the base plate 1 stops, the pressure slider 801 withdraws to its original position, and the resistance rod 7 reversely twists through the tension rubber band to make the grounding plate 701 pressed on the ground by the action of elastic force.

[0050] Working principle: Every time the base plate 1 stops, the resistance rod 7 starts to twist to lock the grounding plate 701 on the ground, the three-dimensional tube 202 starts to twist and drives the interlaced square rod 210 inside it to rotate, and the interlaced square rod 210 and the cutting disk 211 at its bottom start to perform a hole-making operation on the ground. The interlaced square rod 210 can also be lifted and inserted inside the three-dimensional tube 202 while rotating. Every time the base plate 1 moves, the electric push rod 803 drives the connecting bridge 802 to move a short distance, and then the two pressure slides 801 will move along the pressure When the guide rail 8 moves a short distance, the inclined blocks 804 on both sides of the pressure slider 801 press on the pressure steel ball 702 to make the contact rod 7 start to twist, and the grounding piece 701 at the end of the contact rod 7 can be lifted up and leave the ground. Every time the base plate 1 stops, the pressure slider 801 withdraws to its original position, and the contact rod 7 reversely twists the tension rubber band to press the grounding piece 701 to the ground through the elastic force. The cutting motor 205 drives the extension belt 206 and the driven turntable 203 to rotate by driving the loading plate 204, and the three-dimensional tube 202 As the driven turntable 203 rotates, the cutting motor 205 increases the power of peeling. At the same time, the telescopic cylinder 208 drives the notch frame 209 to rise and fall. The notch frame 209 drives the lifting plate 207 at the top of the interlaced square rod 210 to drop a short distance. The distance that the interlaced square rod 210 drops is the drilling depth of the cutting disk 211. After the hole is drilled on the ground, the grinding rod 302 is inserted into the hole for grinding. The stepper motor 401 drives the vertical square rod 402 and the grinding rod 302 to rotate. The grinding rod 302 also rotates when it is twisted. It can move up and down relative to the vertical square rod 402, so that the grinding rod 302 can grind deeper holes. The grinding plate 306 applies pressure to the outside through the elastic force of the return spring 310. The grinding plate 306 can remove granular impurities on the inner wall of the channel. The locking cylinder 304 drives the clamping plate 303 to rise and fall through the locking round rod 305. The grinding rod 302 can be raised and lowered while rotating. The inclined plate 307 can be more easily inserted into the port of the channel. The rubber particles on the rubber pad have better grip to prevent the base plate 1 from slipping during construction.

[0051] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A guide drilling device for bored piles in complex geological conditions, characterized by: The invention comprises a base plate (1), wherein the bottom corners of the base plate (1) are provided with four casters (5), and the bottom end of the base plate (1) is provided with two sets of hinge blocks (6), the middle of the hinge block (6) is rotatably mounted with a resistance rod (7), the outward end of the resistance rod (7) is provided with a grounding plate (701), and the inward end of the resistance rod (7) is provided with a pressure steel ball (702), the middle of the base plate (1) is provided with a pressing guide rail (8), and two pressure sliders (801) are slidably mounted on the pressing guide rail (8), and two sides of the pressure slider (801) are provided with a pressure steel ball ( 702), the pressure slider (801) is connected to the pressure assembly, the top of the base plate (1) is provided with an arch bridge (2) and a grinding bridge (3), the middle of the arch bridge (2) is provided with a cutting assembly, the middle of the grinding bridge (3) is provided with a grinding assembly, the cutting assembly includes a plane shaft seat (201) fixed to the top of the arch bridge (2), the inner side of the plane shaft seat (201) is rotatably interspersed with an interpenetrating square rod (210), the side wall of the base plate (1) is rotatably interspersed with a stereoscopic tube (202), the center of the stereoscopic tube (202) is provided with a square rod ( The three-dimensional tube (202) is connected to the torsion power assembly, the interpenetrating square rod (210) is connected to the lifting power assembly, the bottom end of the interpenetrating square rod (210) is provided with a cutting disc (211), the bottom end of the cutting disc (211) is provided with a plurality of cutting particles (213), and the cutting disc (211) is also provided with a discharge hole (212), the pressure assembly includes a connecting bridge (802), both ends of the connecting bridge (802) are connected to the pressure slider (801), and the connecting bridge (802) is connected to the electric push rod (803). On the output rod, the electric push rod (803) is fixed on the bottom surface of the base plate (1), the pressure steel ball (702) is connected to the bottom surface of the base plate (1) through a tension rubber band, and the torsion power component includes a driven turntable (203), the driven turntable (203) is fixed to the top end port of the stereo tube (202), and a driving disk (204) is provided on one side of the driven turntable (203), and the driving disk (204) and the driven turntable (203) are connected by an extension belt (206), and the driving disk (204) is installed on the output end of the cutting motor (205).

2. The guide drilling device for bored piles in complex geological conditions according to claim 1, characterized in that: The lifting power assembly comprises a telescopic cylinder (208), a notch frame (209) is installed at the output end of the telescopic cylinder (208), a lifting plate (207) is provided at the top end of the interlaced square rod (210), the notch frame (209) is bridged on the lifting plate (207), and organic oil is applied between the notch frame (209) and the lifting plate (207).

3. The guide drilling device for bored piles in complex geological conditions according to claim 1, characterized in that: The grinding assembly comprises a shaft sleeve (301) fixed on the top of a grinding bridge (3); a grinding rod (302) is movably inserted in the middle of the shaft sleeve (301); a grinding head is provided at the bottom end of the grinding rod (302); an auxiliary arch bridge (4) is provided at the top of the grinding bridge (3); a stepping motor (401) is provided at the top of the auxiliary arch bridge (4); an upright square rod (402) is provided at the output end of the stepping motor (401); a rectangular channel matching the upright square rod (402) is provided at the center of the grinding rod (302); and the grinding rod (302) is connected to the telescopic assembly.

4. The guide drilling device for bored piles in complex geological conditions according to claim 3, characterized in that: The grinding head comprises a telescopic tube (308) at the bottom end of the grinding rod (302), a telescopic rod (309) movably inserted into the inner side of the telescopic tube (308), a grinding plate (306) provided at the end of the telescopic rod (309), and a return spring (310) is sheathed on the outer side of the telescopic tube (308) and the telescopic rod (309), one end of the return spring (310) is connected to the grinding rod (302), and the other end of the return spring (310) is connected to the side wall of the grinding plate (306).

5. The guide drilling device for bored piles in complex geological conditions according to claim 4, characterized in that: The telescopic assembly comprises a locking cylinder (304) fixed at the bottom end of the base plate (1); a locking round rod (305) is installed at the output end of the locking cylinder (304); a clamping piece (303) is fixedly provided on the outer side of the polishing rod (302); an annular groove is provided in the middle of the clamping piece (303); and the locking round rod (305) is inserted into the annular groove.

6. The guide drilling device for bored piles in complex geological conditions according to claim 4, characterized in that: A layer of grinding stone is installed on the outer side of the grinding plate (306), and an inclined plate (307) is provided at the bottom end of the grinding plate (306), and the inclined plate (307) and the axis of the grinding rod (302) form an angle of 60 degrees.

7. The guide drilling device for bored piles in complex geological conditions according to claim 1, characterized in that: A layer of rubber pad is attached to the bottom surface of the grounding sheet (701), and a plurality of rubber particles are arranged at the bottom end of the rubber pad.

8. The construction method of a guide drilling device for bored piles in complex geological conditions according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. The base plate (1) is pushed to the construction site, and then the cutting motor (205) drives the extension belt (206) and the driven turntable (203) to rotate by driving the loading plate (204). The three-dimensional tube (202) rotates together with the driven turntable (203), and then the interlaced square rod (210) inside the three-dimensional tube (202) and the cutting disk (211) at the bottom thereof are pressed on the ground to perform a rotary hole-making operation. At the same time, the telescopic cylinder (208) drives the notch frame (209) to rise and fall, and the notch frame (209) drives the lifting disk (207) at the top of the interlaced square rod (210) to fall a short distance. The distance that the interlaced square rod (210) falls is the drilling depth of the cutting disk (211). The punched powder will reach the top of the cutting disk (211) from the discharge hole (212). The base plate (1) moves in a straight line to punch a row of holes on the ground. S2. After a row of holes are drilled on the ground, the base plate (1) is pushed back to the starting position, and the end of the grinding rod (302) is inserted into the hole. The stepping motor (401) drives the vertical rod (402) and the grinding rod (302) to rotate. At the same time, the locking cylinder (304) drives the clamping piece (303) to rise and fall through the locking round rod (305). The grinding rod (302) can be raised and lowered while rotating. At this time, the cutting disc (211) reaches the next linear station to perform the hole drilling operation. Then, the cutting disc (211) and the grinding rod (302) can operate simultaneously. The grinding sheet (306) on the outside of the grinding rod (302) will fit on the inner wall of the hole for grinding operation. S3. Every time the base plate (1) moves, the electric push rod (803) drives the connecting bridge (802) to move a short distance, and then the two pressure sliders (801) will move a short distance along the pressing guide rail (8). The inclined blocks (804) on both sides of the pressure slider (801) will press on the pressure steel ball (702) to make the contact rod (7) start to twist, and the grounding plate (701) at the end of the contact rod (7) can be lifted up and leave the ground. Every time the base plate (1) stops, the pressure slider (801) withdraws to its original position, and the contact rod (7) reversely twists through the tension rubber band to make the grounding plate (701) pressed on the ground by the elastic force.

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