CN116877109A - Pile drilling machine tool for reinforcing weak foundation in tunnel - Google Patents

Abstract

The invention relates to the technical field of tunnel reinforcement, in particular to a pile drilling machine tool for reinforcing a weak foundation in a tunnel. According to the invention, through the arrangement of the drill bit, when the compaction work is carried out on the foundation which is soft in soil and easy to collapse in the compaction process, the drill bit is used for carrying out the compaction work, so that the impact on the hole wall is reduced, the compaction work can be carried out smoothly, the collapse of the hole wall in the compaction work process is avoided, in the drilling process, through the arrangement of the compaction column, the compaction column can compact the hole wall under the action of centrifugal force, and the strength of the hole wall is improved.

Description

Pile drilling machine tool for reinforcing weak foundation in tunnel

Technical Field

The invention relates to the field of tunnel reinforcement, in particular to a pile drilling machine tool for reinforcing a weak foundation in a tunnel.

Background

In the construction process of some tunnel engineering projects, if a weak soil foundation (also called a weak foundation) is encountered, relevant reinforcement technical means are required to be considered, so that the bearing capacity of the tunnel is enhanced by strengthening optimization and control, and the safety and stability of the whole tunnel are practically ensured. For tunnel weak foundations, gravel piles or jet grouting piles are generally adopted for reinforcement, wherein the gravel piles have the advantages of being simple in mechanical operation, practical, small in occupied space and few in required constructors.

An automated reinforced gravel pile construction machine based on Beidou positioning is disclosed in the patent publication No. CN110904947A, and comprises a gravel pile machine and a belt conveyor. The gravel pile machine is connected with the belt conveyor through hydraulic jacks, and two ends of each hydraulic jack are respectively connected with the bottom of the gravel pile machine and the bottom of the belt conveyor.

However, the construction machine still has certain defects when in use, in the prior art, when the foundation of the position of the inverted arch in the tunnel is reinforced, large equipment cannot enter the tunnel for reinforcement due to the fixed height of the tunnel, and the weak foundation is various due to the complexity of the soil layer structure, for example, when the sand content in the soil structure is small, the soil layer foundation is weak, but still has certain strength, is not easy to collapse in the subsequent tamping work, when the sand content in the soil structure is large, the drilled hole is easy to collapse at the moment, and the hole wall is very easy to collapse after being impacted in the process of tamping the pile.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a pile drilling machine tool for reinforcing a weak foundation in a tunnel.

In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a weak foundation consolidates and bores stake machines in tunnel, includes the automobile body, the top of automobile body is provided with position control subassembly, and position control subassembly's one end rotates and installs first mounting bracket and second mounting bracket, and first mounting bracket and second mounting bracket highly be three meters, and first mounting bracket's one end is provided with the drill bit that is used for forming a hole on weak foundation, and second mounting bracket's one end is provided with the rammer that is used for ramming, and the rammer is used for ramming the rubble that adds to downthehole after the pore-forming; the drill bit comprises a drill string and a helical blade, the helical blade is fixedly sleeved on the outer side of the drill string, a cutting plate is rotatably arranged at the bottom end of the helical blade, a cone is fixedly connected to the bottom end of the drill string, and the cone also has a tamping function.

Preferably: the bottom one side fixedly connected with installation axle of drill bit, the outside rotation of installation axle has cup jointed the rotarod, the rotarod is located one side that the cutting board was kept away from to the drill bit bottom, the installation guide slot has been seted up to the below of helical blade bottom tip, fixedly connected with moment of torsion pivot in the installation guide slot, the cutting board rotates the outside of cup jointing at the moment of torsion pivot, the grooving has been seted up to the one end of cutting board, the one end that the grooving was kept away from to the cutting board and the top wallboard butt of installation guide slot, moment of torsion pivot applys decurrent moment of torsion to the cutting board, the one end that the cutting board was close to the grooving uses moment of torsion pivot as the center decurrent rotation, one end bottom fixedly connected with boss that the cutting board was kept away from to the installation guide slot, sliding connection has the butt plate on the boss, butt plate and the tip wallboard activity butt of cutting board.

Preferably: the position adjusting assembly comprises a transverse moving base, a driving sliding rail is fixedly connected to the bottom of the transverse moving base and is slidably connected to the top of a vehicle body, the vehicle body comprises a vehicle head and the vehicle body, the driving sliding rail is slidably connected to the top of the vehicle body, one end top of the transverse moving base, far away from the vehicle head, is rotationally connected with an adjusting rotating shaft, the outer side of the adjusting rotating shaft is rotationally sleeved with a rotating base, and the first installation frame and the second installation frame are rotationally installed at the top of the rotating base, far away from one end of the vehicle head.

Preferably: the equal fixedly connected with connecting plate in top one end both sides of rotating the base, rotate on the connecting plate and be connected with the carousel, two carousels are fixed connection respectively on the side wall board of first mounting bracket and second mounting bracket, and the carousel is located the bottom tip of first mounting bracket and second mounting bracket, the equal fixedly connected with first connecting bench in one side of first mounting bracket and second mounting bracket top tip, the outside rotation of first connecting bench has cup jointed hydraulic telescoping rod, and hydraulic telescoping rod's flexible end and first connecting bench rotate and cup joint, hydraulic telescoping rod's stiff end rotates and cup joints in the second connecting bench, second connecting bench fixed connection is keeping away from the one end of locomotive at the rotation base top, and the second connecting bench is located between locomotive and the carousel.

Preferably: one end top fixedly connected with connecting plate that first mounting bracket and second mounting bracket are close to each other, the equal fixedly connected with cross-section of one side bottom that first mounting bracket and second mounting bracket kept away from each other is the support of "L" style of calligraphy, and one side bottom that vertical end of two supports is close to each other is provided with the compression roller, and the equal fixedly connected with in both ends of compression roller supports the pivot, and even support the pivot and rotate respectively and cup joint in the vertical end bottom of two supports.

Preferably: the bottom of first mounting bracket and second mounting bracket is all flexible installs the backup pad, and the equal fixedly connected with in top both sides of backup pad supports the telescopic link, supports the telescopic link's the telescopic link fixed connection in the backup pad, and four support the telescopic link and inlay respectively and establish inside first mounting bracket and second mounting bracket bottom, be located one side fixedly connected with spacing ring of the backup pad of first mounting bracket bottom, the spacing ring is located under the drill bit.

Preferably: one side top fixedly connected with diaphragm of automobile body is kept away from to the second mounting bracket, and the top fixedly connected with coiler of diaphragm, the inside wiring of coiler has the wiring rope, and the one end fixedly connected with rammer hammer of wiring rope, the chamfer has been seted up to the bottom of rammer hammer, and the equal fixedly connected with in the bottom both sides of diaphragm is used for many pairs of rammer hammers to carry out spacing riser.

Preferably: one side slidable mounting that the automobile body was kept away from to first mounting bracket has the sliding plate, and one side both ends of sliding plate are equal fixedly connected with electric slider, and electric slider sliding connection is in the drive spout, and one side that the automobile body was kept away from at first mounting bracket is all seted up to two drive spouts, and the top fixedly connected with piling motor of sliding plate, piling motor's output shaft run through the sliding plate, and piling motor's output shaft passes through the screw column and is connected with the drill bit transmission.

Preferably: the driving joints are arranged at the two ends of the spiral column, the driving joints are also arranged at the top of the drill bit and the output end of the piling motor, and the piling motor, the spiral column and the drill bit are in driving connection through the driving joints; the driving joint comprises fixing columns, one sides of the piling motor, the spiral columns and the drill bit, which are close to each other, are fixedly connected with fixing columns, one sides of the two adjacent fixing columns, which are opposite to each other, are fixedly connected with U-shaped plates, one ends of the U-shaped plates, which are far away from the fixing columns, are in threaded connection with fixing bolts, and the U-shaped plates on the two adjacent fixing columns are clamped with each other through the fixing bolts.

Preferably: the side fixedly connected with of fixed column a plurality of slide bars, the sleeve has been cup jointed in the outside slip of slide bar, the sleeve is close to the one end that the fixed column was kept away from to the slide bar with the slide bar all is provided with spacing rectangular ring, sleeve and slide bar can also the joint when gliding through spacing rectangular ring, the sleeve is kept away from the one end fixedly connected with extension post of fixed column, the extension post is kept away from telescopic one end and has been rotated along vertical direction and has been cup jointed the connecting axle, the equal fixedly connected with in both ends of connecting axle compresses tightly the post, one side that two compression posts on the same connecting axle kept away from each other all is provided with pointed end.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, through the arrangement of the drill bit, when the compaction work is carried out on the foundation which is soft in soil and easy to collapse in the compaction process, the drill bit is used for carrying out the compaction work, so that the impact on the hole wall is reduced, the compaction work can be carried out smoothly, the collapse of the hole wall in the compaction work process is avoided, in the drilling process, through the arrangement of the compaction column, the compaction column can compact the hole wall under the action of centrifugal force, and the strength of the hole wall is improved.

2. According to the invention, through the arrangement of the cone, in the process of tamping by using the drill bit, broken stone can be contacted with the cone, under the action of the conical surface of the side edge of the cone, broken stone at the bottom of the cone can be subjected to a force away from the cone, so that broken stone moves towards the side wall of the hole, and further, part of broken stone can be effectively embedded into the side wall of the hole, the strength of the hole wall is improved, and in this way, the impact on the hole wall in the tamping process can be reduced, the tamping can be smoothly performed, and further, the collapse of the hole wall caused by the impact can be avoided.

3. According to the invention, through the arrangement of the press roller, in the process that the vehicle body drives the press roller to move, the press roller can exert a force on the ground, the press roller can play a role similar to a road roller in the moving process, so that broken stone after piling is exerted with a pressure by surrounding soil, the connection between the broken stone after piling and the soil is further improved, the connection between the pile and the soil is further compacted, the strength of a foundation is further improved, and secondly, the press roller can also provide effective support for the first mounting frame and the second mounting frame in the punching and tamping processes.

4. According to the invention, through the arrangement of the first mounting frame and the second mounting frame, the heights of the first mounting frame and the second mounting frame are meter, when the weak foundation of the tunnel is reinforced, equipment in the prior art often cannot enter the tunnel due to overlarge equipment, so that the reinforcing work of the weak foundation of the part where the inverted arch of the tunnel is located cannot be realized, and the device can enter the tunnel under the traction of a vehicle body to reinforce the weak foundation below the inner bottom surface of the tunnel.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a side view of the overall structure of the present invention;

FIG. 3 is an enlarged schematic view of the structure of the portion A shown in FIG. 2 according to the present invention;

FIG. 4 is a schematic cross-sectional view of the structure of the vehicle body of the present invention;

FIG. 5 is a schematic view of the installation structure of the press roller of the present invention;

FIG. 6 is a schematic view of the connection structure of the screw column of the present invention;

FIG. 7 is a schematic view of the overall structure of the drill bit of the present invention;

FIG. 8 is a schematic partial cross-sectional view of a drill bit of the present invention;

FIG. 9 is a schematic diagram of a connection structure of two transmission joints according to the present invention;

FIG. 10 is a schematic cross-sectional view of a transmission joint of the present invention;

fig. 11 is a schematic view showing a connection structure of the compression column and the connection shaft of the present invention.

In the figure: 1. a vehicle body; 2. traversing the base; 3. rotating the base; 5. a first mounting frame; 6. a bracket; 7. a ramming hammer; 8. a winding machine; 9. piling motor; 10. a hydraulic telescopic rod; 11. a screw column; 12. a sliding plate; 13. a press roller; 14. a drill bit; 16. a support plate; 17. a limiting ring; 18. a second mounting frame; 19. a rotating rod; 20. cutting a plate; 21. a cone; 22. a torque shaft; 23. driving the chute; 24. an electric slide block; 25. chamfering; 26. a cross plate; 27. an abutting plate; 4. a transmission joint; 41. fixing the column; 42. a U-shaped plate; 43. a fixing bolt; 44. a compression column; 45. a sleeve; 46. an extension column; 47. a slide bar; 48. and a connecting shaft.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.

The tunnel weak foundation reinforcing pile drilling machine comprises a vehicle body 1, wherein a position adjusting assembly is arranged at the top of the vehicle body 1, a first mounting frame 5 and a second mounting frame 18 are rotatably arranged at one end of the position adjusting assembly, the heights of the first mounting frame 5 and the second mounting frame 18 are three meters, a drill bit 14 for forming holes on a weak foundation is arranged at one end of the first mounting frame 5, a ramming hammer 7 for ramming is arranged at one end of the second mounting frame 18, and the ramming hammer 7 is used for ramming broken stone added into a hole after the holes are formed; the drill bit 14 comprises a drill string and helical blades, the helical blades are fixedly sleeved on the outer side of the drill string, a cutting plate 20 is rotatably arranged at the bottom end of each helical blade, a cone 21 is fixedly connected to the bottom end of the drill string, and the cone 21 also has a tamping function. The bottom of automobile body 1 is provided with telescopic landing leg, and the landing leg can prevent that automobile body 1 from taking place to remove at drilling and rammed working process, when needs remove the device for landing leg shrink can realize, and the setting of this landing leg is prior art, is common in mobile mechanical equipment such as automobile crane, does not make too much disclosure here.

When reinforcing the tunnel, need carry out the drilling to the position of weak basis on the basis earlier, after the drilling, through filling the rubble in the hole, form the rubble stake in the hole through ramming the rubble, improve the intensity of weak basis, the center department of tunnel is 8.8 meters high usually, the width of tunnel is 11.2 meters, the height of first mounting bracket 5 and second mounting bracket 18 is 3 meters, when reinforcing the weak basis of tunnel, equipment among the prior art often can't enter into the tunnel because of too big, and then can't realize carrying out reinforcing work to the weak basis of tunnel inverted arch place part, and the device then can enter into the tunnel under the traction of automobile body 1, consolidate the weak basis below the inside bottom surface of tunnel.

In specific implementation, through the removal of automobile body 1, remove the device to in the tunnel, then stand first mounting bracket 5 and second mounting bracket 18 in the afterbody of automobile body 1 through position control subassembly, carry out drilling work through drill bit 14 afterwards, pour quantitative building stones to Kong Naqing after drilling work is accomplished, after the building stones poured into the hole bottom, strike down again to downthehole tamping hammer 7 and evenly tamp the rubble, and then reach the tamping effect, guarantee pile body intensity.

In the process of drilling, the cone 21 can extrude the soil layer after contacting with the ground, along with the extrusion of the cone 21 to the soil layer, the cone 21 soil layer pushes to the side, then scrapes the soil through the cutting plate 20, then upwards carries through helical blade on the drill bit 14, and the extrusion of the cone 21 to the soil can effectually promote the broken soil of the drill bit 14, after extruding the soil to the side of the cone 21 simultaneously, also can conveniently cut the board 20 and scrape the soil, improves the work efficiency of drill bit 14. At this time, the rotating rod 19 arranged at the side of the drill bit 14 is in a suspended state.

As a further embodiment of the invention: the bottom one side fixedly connected with installation axle of drill bit 14, the outside rotation of installation axle has cup jointed rotatory stick 19, the one side that cutting board 20 was kept away from to rotatory stick 19 is located the drill bit 14 bottom, the installation guide slot has been seted up to the below of helical blade bottom end portion, fixedly connected with moment of torsion pivot 22 in the installation guide slot, cutting board 20 rotates the outside of cup jointing at moment of torsion pivot 22, the grooving has been seted up to the one end of cutting board 20, the one end that cutting board 20 kept away from the grooving and the top wallboard butt of installation guide slot, moment of torsion pivot 22 applys decurrent moment of torsion to cutting board 20, the one end that cutting board 20 is close to the grooving uses moment of torsion pivot 22 as the center to rotate downwards, the one end bottom fixedly connected with boss that cutting board 20 was kept away from to the installation guide slot, sliding connection has butt plate 27 on the boss, butt plate 27 and the tip wallboard activity butt of cutting board 20. The lowest end of the cutting plate 20 in the spontaneous combustion state is lower than the lowest part of the rotating rod 19, and the torque rotating shaft 22 always applies a torque to the cutting plate 20, so that the end of the cutting plate 20 far away from the spiral blade always receives a downward force, and the torque rotating shaft 22 is not disclosed in the prior art. The helical blades and the cutting plates 20 are each made of a metal material resistant to abrasion and having a certain hardness.

In specific implementation, when the foundation which is soft in soil and is not easy to collapse in the tamping process is tamped, the position of the tamping hammer 7 is adjusted through the position adjusting component, so that the tamping hammer 7 can be positioned right above a hole, broken stone is filled into the hole, the height of the broken stone is 0.5-0.6 m, after the broken stone is poured into the hole bottom, the tamping hammer 7 is further downwards tamped into the hole, after the broken stone is tamped, the broken stone is filled again, and then the broken stone is tamped, in the process, filling and tamping are alternately performed, each layer of tamping is performed for not less than 8 times, the top layer of tamping is performed for not less than 16 times, and then the broken stone is effectively tamped through the tamping hammer 7. In the process of tamping operation, the drill bit 14 can also re-drill towards the underground, and as the shortest distance between the movement track of the drill bit 14 and the movement track of the tamping hammer 7 is fixed, the distance between holes can be effectively kept equal in the process of simultaneously operating the drill bit 14 and the tamping hammer 7, and the deviation of pile hole positions is avoided.

When the soil is soft and the foundation which is easy to collapse in the tamping process is tamped, the drill bit 14 is controlled to reversely rotate, at the moment, the helical blade on the drill bit 14 can convey materials towards the bottom of the hole, a certain amount of broken stone is scattered into the hole, the broken stone can be conveyed towards the bottom of the hole through the drill bit 14 after falling into the hole, then due to the torque rotating shaft 22, when the broken stone falls into the bottom of the hole, the broken stone can be downwards pressed by the cutting plate 20 away from the bottom wall plate of one end of the helical blade, when the drill bit 14 reversely rotates, the abutting plate 27 can move towards the direction close to the cutting plate 20 when contacting the broken stone at the bottom of the hole, then the abutting plate 27 abuts against the end wall plate of the cutting plate 20, one end of the cutting plate 20 away from the boss can downwards rotate, the abutting plate 27 and the torque rotating shaft 22 jointly promote the broken stone to downwards rotate towards the bottom of the hole, the broken stone can be downwards pressed by the cutting plate 20 under the action of the cutting plate 20, and the effect similar to the tamping effect of the broken stone is achieved, and the broken stone is tiled in the hole. In this process, if the quantity that the rubble entered into in the hole is comparatively more, the rubble can accumulate at the hole bottom, through the setting of rotating stick 19, can smooth the work to the rubble, plays effectual guard action to cutting plate 20, avoids cutting plate 20 to pile up too much and be blocked because of the rubble, and then causes the condition that cutting plate 20 excessively damaged to appear.

After the rubble enters the hole bottom, the rubble can be contacted with the cone 21 at this moment, under the pushing down of the cutting plate 20, the rubble of cone 21 bottom can receive the power of keeping away from the cone 21 under the conical surface effect of cone 21 side for the rubble moves towards the lateral wall of hole, and then makes partial rubble can effectually inlay in the lateral wall of hole, improves the intensity of pore wall, adopts this kind of mode, can reduce the impact that the tamp in-process pore wall received for the tamp work can be mild go on, and then can avoid the pore wall to take place the condition that collapses because of receiving the impact to appear.

As a further embodiment of the invention: the position control assembly comprises a transverse moving base 2, a driving sliding rail is fixedly connected to the bottom of the transverse moving base 2 and is slidably connected to the top of a vehicle body 1, the vehicle body 1 comprises a vehicle head and a vehicle body, the driving sliding rail is slidably connected to the top of the vehicle body, one end top of the transverse moving base 2 far away from the vehicle head is rotationally connected with an adjusting rotating shaft, the outer side of the adjusting rotating shaft is rotationally sleeved with a rotating base 3, and a first mounting frame 5 and a second mounting frame 18 are rotationally mounted at one end of the rotating base 3 far away from the vehicle head. The traversing base 2 and the rotating base 3 are respectively provided with a telescopic supporting leg for positioning and supporting, and the telescopic supporting legs are the same as the supporting legs arranged on the vehicle body 1 and are not disclosed too much.

In specific implementation, the first mounting frame 5 and the second mounting frame 18 are enabled to move towards the direction far away from the headstock through the transverse moving base 2, then the drill bit 14 and the tamping hammer 7 are located on the outer side of the vehicle body 1, then the drill bit 14 and the tamping hammer 7 can be abutted with the ground, the positions of the tamping hammer 7 and the drill bit 14 are adjusted through the rotating base 3, and drilling work and tamping work are facilitated.

As a further embodiment of the invention: the equal fixedly connected with connecting plate in top one end both sides of rotating base 3, rotate on the connecting plate and be connected with the carousel, two carousels are fixed connection respectively on the side wallboard of first mounting bracket 5 and second mounting bracket 18, and the carousel is located the bottom tip of first mounting bracket 5 and second mounting bracket 18, the equal fixedly connected with first connecting bench in one side of first mounting bracket 5 and second mounting bracket 18 top tip, hydraulic telescoping rod 10 has been cup jointed in the outside rotation of first connecting bench, and hydraulic telescoping rod 10's flexible end and first connecting bench rotate and cup joint, hydraulic telescoping rod 10's stiff end rotates and cup joints in the second connecting bench, second connecting bench fixed connection is in the one end that rotates base 3 top and keep away from the locomotive, and the second connecting bench is located between locomotive and the carousel. The arrangement of the rotating table and the connecting plate is prior art and is not disclosed here too much.

In specific implementation, through control hydraulic telescoping rod 10 extension, hydraulic telescoping rod 10 can upwards push up first mounting bracket 5 and second mounting bracket 18 after extending, and then makes first mounting bracket 5 and second mounting bracket 18 rotate with the rotation junction of rolling stand and connecting plate as the center, and then makes first mounting bracket 5 and second mounting bracket 18 can stand at the afterbody of automobile body 1, at this in-process, hydraulic telescoping rod 10's flexible end and stiff end can take place relative rotation with first connection platform and second connection platform respectively.

As a further embodiment of the invention: one end top fixedly connected with connecting plate that first mounting bracket 5 and second mounting bracket 18 are close to each other, the equal fixedly connected with cross-section of one side bottom that first mounting bracket 5 and second mounting bracket 18 are kept away from each other is "L" style of calligraphy support 6, and one side bottom that the vertical end of two supports 6 is close to each other is provided with compression roller 13, and the equal fixedly connected with in both ends of compression roller 13 supports the pivot, and even support the pivot and rotate respectively and cup joint in the vertical end bottom of two supports 6.

In the concrete implementation, after the foundation punching and tamping work in a certain area is finished, drive first mounting bracket 5 and second mounting bracket 18 through automobile body 1 and remove, at this moment, at the in-process that removes, still keep first mounting bracket 5 and second mounting bracket 18 to be vertical state, make automobile body 1 remove at the in-process that removes, the compression roller 13 can drive, at this moment, the compression roller provides a holding power to first mounting bracket 5 and second mounting bracket 18, compression roller 13 also can exert a force to the ground simultaneously, compression roller 13 removes along with the removal of automobile body 1, compression roller 13 can flatten the ground this moment, play an effect similar to "road roller", make the rubble after the piling exert a pressure by surrounding soil, further improve the connection between rubble after the piling and the soil, make the connection between pile and the soil more compact, further improve the intensity of foundation, secondly, compression roller 13 is in the in-process of punching and tamping, can also provide effective support to first mounting bracket 5 and second mounting bracket 18, compression roller 13 and hydraulic ram 10 support respectively in first both sides 5 and second mounting bracket 18, keep first mounting bracket 5 and second mounting bracket 18 stable.

As a further embodiment of the invention: the bottom of first mounting bracket 5 and second mounting bracket 18 all flexible installs backup pad 16, and the equal fixedly connected with in top both sides of backup pad 16 supports the telescopic link, supports the telescopic link's flexible end fixed connection in backup pad 16, and four support the telescopic link and inlay respectively and establish inside first mounting bracket 5 and second mounting bracket 18 bottom, be located one side fixedly connected with spacing ring 17 of backup pad 16 of first mounting bracket 5 bottom, spacing ring 17 is located under the drill bit 14. The inner diameter of the limiting ring 17 is larger than the outer diameter of the helical blade on the drill bit 14, so that the drill bit 14 can penetrate through the limiting ring 17 to perform drilling work, and the supporting telescopic rod is an electrically driven telescopic rod.

In specific implementation, in the device drilling and tamp rubble pile-forming process, through the extension of control support telescopic link for backup pad 16 descends, and backup pad 16 can support the bottom after first mounting bracket 5 and second mounting bracket 18 stand up with ground butt afterwards, and backup pad 16 that is located the bottom of first mounting bracket 5 also can drive spacing ring 17 and descend for spacing ring 17 also with ground butt for the position of drilling is confirmed, marks on the ground through the technician, can ensure the accuracy of drilling position.

As a further embodiment of the invention: one side top fixedly connected with diaphragm 26 of automobile body 1 is kept away from to second mounting bracket 18, and the top fixedly connected with coiler 8 of diaphragm 26, and the inside wiring of coiler 8 has the wiring rope, and the one end fixedly connected with rammer 7 of wiring rope, chamfer 25 has been seted up to rammer 7's bottom, and the equal fixedly connected with in bottom both sides of diaphragm 26 is used for many spacing limiting riser to rammer 7. The winding machine 8 is in the prior art, the speed of the winding machine 8 when the rammer 7 is wound is slower, the speed of the winding machine 8 when the rammer 7 is dredged is faster, and the dredging speed of the winding machine 8 is larger than the speed of the rammer 7 when the rammer falls freely.

In specific implementation, when the compaction work is carried out on a foundation which is soft in soil and is not easy to collapse in the compaction process, the compaction hammer 7 is lifted by the winding machine 8, and then the compaction hammer 7 is dredged by the winding machine 8, so that the compaction hammer 7 can move in a free falling manner, the compaction hammer 7 can impact on broken stones in a hole, the broken stones are compacted, in the process, the broken stones which are positioned at the bottom of the compaction hammer 7 and are close to the side wall of the hole can be extruded towards the hole wall by the chamfer 25 positioned at the bottom of the compaction hammer 7, and then part of broken stones are embedded in the hole wall, so that the connection between the broken stones and soil after piling is ensured, and the strength of the weak foundation can be effectively improved.

As a further embodiment of the invention: one side slidable mounting that automobile body 1 was kept away from to first mounting bracket 5 has slide plate 12, and the equal fixedly connected with electric slider 24 in one side both ends of slide plate 12, and electric slider 24 sliding connection is in drive spout 23, and one side that automobile body 1 was kept away from at first mounting bracket 5 is all seted up to two drive spouts 23, and the top fixedly connected with piling motor 9 of slide plate 12, the output shaft of piling motor 9 run through slide plate 12, and piling motor 9's output shaft passes through screw 11 and is connected with drill bit 14 transmission. The side of the screw column 11 is also provided with screw blades, the screw blades of the screw column 11 are used for conveying soil or broken stone, and the screw column 11 is a drill rod provided with screw blades.

In specific implementation, during drilling, the electric sliding block 24 drives the sliding plate 12 to slide downwards, and then the sliding plate 12 drives the piling motor 9 and the drill bit 14 to move downwards, so that the soil drilling is realized, and when the drill bit 14 rotates reversely, the sliding plate 12 can slide downwards, so that the cone 21 pushes broken stone towards the hole wall, and further the broken stone is better embedded in the hole wall. The piling motor 9 is a servo motor, and can control the piling motor 9 to rotate forward or backward, when the piling motor 9 rotates forward, the drill bit 14 performs drilling work, and when the piling motor 9 rotates backward, the screw column 11 conveys broken stone into the hole.

As a further embodiment of the invention: the two ends of the spiral column 11 are provided with transmission joints 4, the top of the drill bit 14 and the output end of the piling motor 9 are also provided with the transmission joints 4, and the piling motor 9, the spiral column 11 and the drill bit 14 are in transmission connection through the transmission joints 4; the transmission section 4 comprises fixing columns 41, fixing columns 41 are fixedly connected to one sides, close to each other, of the piling motor 9, the spiral columns 11 and the drill bit 14, U-shaped plates 42 are fixedly connected to one sides, opposite to each other, of the two adjacent fixing columns 41, fixing bolts 43 are connected to one ends, far away from the fixing columns 41, of the U-shaped plates 42 in the two adjacent fixing columns 41 in a threaded mode, and the U-shaped plates 42 are clamped with each other through the fixing bolts 43.

In a specific implementation, when the piling motor 9 rotates, the output shaft of the piling motor 9 drives the spiral column 11 to rotate through the transmission joint 4, and then the spiral column 11 drives the drill bit 14 to rotate through the transmission joint 4. After the sliding plate 12 moves to the bottom of the first mounting frame 5, a stop pin is placed on the stop collar 17 (which is common knowledge of the person skilled in the art and is not disclosed too much herein), then the transmission joint 4 on one end of the output shaft of the piling motor 9 is separated, then the sliding plate 12 is controlled to rise to the top of the first mounting frame 5, then a new screw 11 is added between the output shaft of the piling motor 9 and the screw 11, and then the two U-shaped plates 42 are connected by mutually crossing the U-shaped plates 42 on the transmission joint 4 and then by fixing bolts 43.

In the process of tamping by using the drill bit 14, the pressure of the drill bit 14 on the crushed stone can be increased by the downward sliding of the electric sliding block 24, so that the tamping is realized, and the compaction of the crushed stone by the cutting plate 20 and the rotating rod 19 is promoted.

As a further embodiment of the invention: the side fixedly connected with a plurality of slide bars 47 of fixed column 41, the outside slip of slide bar 47 has cup jointed sleeve 45, sleeve 45 is close to the one end that fixed column 41 kept away from the one end of fixed column 41 with slide bar 47 all is provided with spacing rectangular ring, sleeve 45 and slide bar 47 can also the joint when gliding through spacing rectangular ring, sleeve 45 is kept away from the one end fixedly connected with extension post 46 of fixed column 41, the one end that extension post 46 kept away from sleeve 45 has rotated along vertical direction and has cup jointed connecting axle 48, the equal fixedly connected with in both ends of connecting axle 48 compresses tightly post 44, one side that two compression posts 44 on same connecting axle 48 kept away from each other all is provided with the pointed end. The sleeve 45 is provided with a hole groove for ventilation.

In specific implementation, in the pivoted in-process of piling motor 9, piling motor 9 also can drive transmission festival 4 and rotate, and then make sleeve 45 that sets up on the transmission festival 4 receive centrifugal force, under centrifugal force's effect, sleeve 45 can be moved towards the direction of keeping away from fixed column 41, make compressing column 44 also can be moved towards the direction of keeping away from fixed column 41, and then make compressing column 44 can with the pore wall butt, and roll on the pore wall, along with compressing column 44 roll on the pore wall, compressing column 44 can play the effect of compaction through centrifugal force to the pore wall, and then improve the stability in hole, the work of the subsequent tamped rubble pile formation of being convenient for in the tamped working process, the pore wall can not take place to collapse because of vibrations.

In the process that the compression column 44 enters the hole from the ground, the tip of the end part of the compression column 44 is abutted with the limiting ring 17, the compression column 44 can be effectively retracted under the action of the limiting ring 17, the compression column 44 moves towards the direction close to the fixed column 41, then the side wall of the compression column 44 is abutted with the limiting ring 17, and along with the downward sliding of the sliding plate 12, the tip of the end part of the compression column 44 is abutted with the top end wall plate of the hole at the moment, and then the compression column 44 enters the hole under the limitation of the top end wall plate of the hole. The distance from the compression column 44 to the center of the fixed column 41 is smaller than the radius of the inner ring of the limiting ring 17, so that the compression column 44 can enter the limiting ring 17 through the tip end and then enter the hole, the side wall of the hole is compacted, and the difficulty of hole collapse is improved.

The working principle of the invention is as follows:

when the device is used, firstly, the device is brought into a tunnel through the vehicle body 1, the first mounting frame 5 and the second mounting frame 18 are adjusted to preset positions through the position adjusting assembly, drilling work is carried out through the drill bit 14, tamping work is carried out through the tamping hammer 7, the first mounting frame 5 and the second mounting frame 18 are carried out at the same time, and working efficiency can be improved while the distance between holes can be ensured.

When the foundation to soil is soft and easy to collapse in the process of tamping is tamped, the drill bit 14 is used for tamping, the impact on the hole wall is reduced, the tamping can be performed smoothly, the hole wall is prevented from collapsing in the process of tamping, in the process of drilling, the compaction column 44 is arranged, the compaction column 44 can compact the hole wall under the action of centrifugal force, and the strength of the hole wall is improved.

After the compaction work is finished by using the drill bit 14, the device is driven to move through the vehicle body 1, in the process, the ground can be compacted by the press roller 13, so that the soil is pressurized, the connection between the piles and the holes can be further promoted by flattening the soil, and the weak foundation can be effectively improved.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims.

Claims (10)

1. The utility model provides a weak foundation consolidates and bores stake machines in tunnel, includes automobile body (1), its characterized in that: the top of the vehicle body (1) is provided with a position adjusting assembly, one end of the position adjusting assembly is rotatably provided with a first mounting frame (5) and a second mounting frame (18), the heights of the first mounting frame (5) and the second mounting frame (18) are three meters, one end of the first mounting frame (5) is provided with a drill bit (14) for forming holes on a weak basis, one end of the second mounting frame (18) is provided with a tamping hammer (7) for tamping, and the tamping hammer (7) is used for tamping broken stones added into holes after the holes are formed;

the drill bit (14) comprises a drill string and helical blades, the helical blades are fixedly sleeved on the outer side of the drill string, a cutting plate (20) is rotatably arranged at the bottom end of each helical blade, a cone (21) is fixedly connected to the bottom end of the drill string, and the cone (21) also has a tamping function.

2. The in-tunnel weak foundation reinforcement pile drilling machine according to claim 1, wherein: the utility model discloses a drill bit, including drill bit (14), bottom one side fixedly connected with installation axle of drill bit (14), the outside rotation of installation axle has cup jointed rotatory stick (19), one side that cutting board (20) was kept away from to rotatory stick (19) is located drill bit (14) bottom, installation guide slot has been seted up to the below of helical blade bottom tip, fixedly connected with moment of torsion pivot (22) in the installation guide slot, cutting board (20) rotate cup joint in the outside of moment of torsion pivot (22), the grooving has been seted up to the one end of cutting board (20), the one end that cutting board (20) kept away from the grooving and the top wallboard butt of installation guide slot, moment of torsion pivot (22) apply decurrent moment of torsion to cutting board (20), the one end that cutting board (20) are close to the grooving uses moment of torsion pivot (22) as the center to rotate downwards, one end bottom fixedly connected with boss that cutting board (20) was kept away from to the installation guide slot, sliding connection has butt plate (27) on the boss, butt plate (27) and the tip wallboard activity butt of cutting board (20).

3. The in-tunnel weak foundation reinforcement pile drilling machine according to claim 1, wherein: the position adjusting assembly comprises a transverse moving base (2), a driving sliding rail is fixedly connected to the bottom of the transverse moving base (2), the driving sliding rail is slidably connected to the top of a vehicle body (1), the vehicle body (1) comprises a vehicle head and a vehicle body, the driving sliding rail is slidably connected to the top of the vehicle body, one end top of the transverse moving base (2), far away from the vehicle head, is rotatably connected with an adjusting rotating shaft, the outer side of the adjusting rotating shaft is rotatably sleeved with a rotating base (3), and a first mounting frame (5) and a second mounting frame (18) are rotatably mounted at one end, far away from the vehicle head, of the top of the rotating base (3).

4. A weak foundation-reinforcing pile drilling machine in a tunnel according to claim 3, wherein: the utility model discloses a hydraulic telescopic handle, including base (3) and hydraulic telescopic handle, the equal fixedly connected with connecting plate in top one end both sides of rotating base (3), rotate on the connecting plate and be connected with the rotation platform, two rotation platforms are fixed connection respectively on the side wallboard of first mounting bracket (5) and second mounting bracket (18), and the rotation platform is located the bottom tip of first mounting bracket (5) and second mounting bracket (18), one side of first mounting bracket (5) and second mounting bracket (18) top tip is the first connecting bench of fixedly connected with, the outside of first connecting bench rotates and has cup jointed hydraulic telescopic handle (10), and the flexible end of hydraulic telescopic handle (10) rotates with first connecting bench and cup joints, the stiff end of hydraulic telescopic handle (10) rotates and cup joints in the second connecting bench, second connecting bench fixed connection is in the one end that rotates base (3) top and keep away from the locomotive, and the second connecting bench is located between locomotive and the rotation platform.

5. The in-tunnel weak foundation reinforcement pile drilling machine according to claim 1, wherein: one end top fixedly connected with connecting plate that first mounting bracket (5) and second mounting bracket (18) are close to each other, the equal fixedly connected with cross-section of one side bottom that first mounting bracket (5) and second mounting bracket (18) kept away from each other is support (6) of "L" style of calligraphy, and one side bottom that the vertical end of two supports (6) is close to each other is provided with compression roller (13), and the equal fixedly connected with in both ends of compression roller (13) supports the pivot, and even support the pivot and rotate respectively and cup joint in the vertical end bottom of two supports (6).

6. The in-tunnel weak foundation reinforcement pile drilling machine according to claim 1, wherein: the bottom of first mounting bracket (5) and second mounting bracket (18) is all flexible installs backup pad (16), and the equal fixedly connected with in top both sides of backup pad (16) supports the telescopic link, supports telescopic link's telescopic link fixed connection on backup pad (16), and four support the telescopic link and inlay respectively and establish inside first mounting bracket (5) and second mounting bracket (18) bottom, be located one side fixedly connected with spacing ring (17) of backup pad (16) of first mounting bracket (5) bottom, spacing ring (17) are located under drill bit (14).

7. The in-tunnel weak foundation reinforcement pile drilling machine according to claim 1, wherein: one side top fixedly connected with diaphragm (26) of automobile body (1) is kept away from to second mounting bracket (18), and the top fixedly connected with coiler (8) of diaphragm (26), the inside wiring of coiler (8) has the wiring rope, and the one end fixedly connected with rammer (7) of wiring rope, chamfer (25) have been seted up to the bottom of rammer (7), and the equal fixedly connected with in bottom both sides of diaphragm (26) is used for many spacing riser that carry out spacing to rammer (7).

8. The in-tunnel weak foundation reinforcement pile drilling machine according to claim 1, wherein: one side slidable mounting that automobile body (1) was kept away from to first mounting bracket (5) has slide plate (12), one side both ends of slide plate (12) are all fixedly connected with electric slider (24), electric slider (24) sliding connection is in drive spout (23), one side that automobile body (1) was kept away from in first mounting bracket (5) is all offered to two drive spouts (23), the top fixedly connected with piling motor (9) of slide plate (12), the output shaft of piling motor (9) runs through slide plate (12), the output shaft of piling motor (9) passes through screw column (11) and drill bit (14) transmission connection.

9. The in-tunnel weak foundation-reinforcing pile-drilling machine of claim 8, wherein: the two ends of the spiral column (11) are provided with transmission joints (4), the top of the drill bit (14) and the output end of the piling motor (9) are also provided with the transmission joints (4), and the piling motor (9), the spiral column (11) and the drill bit (14) are in transmission connection through the transmission joints (4);

the driving joint (4) comprises fixing columns (41), one side, close to each other, of a piling motor (9), a spiral column (11) and a drill bit (14) is fixedly connected with the fixing columns (41), one side, opposite to each other, of each two adjacent fixing columns (41) is fixedly connected with a U-shaped plate (42), one end, far away from the fixing columns (41), of each U-shaped plate (42) is provided with a fixing bolt (43) in a threaded mode, and the U-shaped plates (42) on the two adjacent fixing columns (41) are clamped with each other through the fixing bolts (43).

10. The in-tunnel weak foundation-reinforcing pile-drilling machine of claim 9, wherein: side fixedly connected with a plurality of slide bars (47) of fixed column (41), sleeve (45) have been cup jointed in the outside slip of slide bar (47), sleeve (45) are close to the one end that fixed column (41) and slide bar (47) kept away from the one end of fixed column (41) all are provided with spacing rectangular ring, sleeve (45) and slide bar (47) can also the joint when gliding through spacing rectangular ring, sleeve (45) are kept away from one end fixedly connected with extension post (46) of fixed column (41), the one end that extension post (46) kept away from sleeve (45) has rotated along vertical direction and has cup jointed connecting axle (48), the both ends of connecting axle (48) are all fixedly connected with and compress tightly post (44), one side that two compression posts (44) on same connecting axle (48) kept away from each other all is provided with pointed end.