CN117513344A - High-pressure jet grouting pile applied to roadbed widening - Google Patents

Abstract

The invention belongs to the technical field of road bridge construction equipment, in particular to a high-pressure jet grouting pile applied to roadbed widening, which comprises a drill bit, wherein a slurry conveying pipe is arranged in the middle of the inside of the drill bit, a water conveying pipe is arranged in the middle of the slurry conveying pipe, a plurality of drill leaves are slidably arranged on the inner wall of the drill bit, a plurality of driving boxes are fixedly connected in the drill bit, a spray head is arranged on one side of each driving box, the spray head is fixedly connected in the drill bit, a plurality of through holes are formed in one end of the spray head, which is close to the driving boxes, a movable pipe is slidably and hermetically connected at one end of the spray head, a plurality of corrugated pipes are arranged between the movable pipe and the driving boxes, and one end of the spray head can be sealed by virtue of a baffle plate and a stirring rod so as to prevent the spray head from being blocked by a large amount of impurities and soil entering the inside the spray head in the working process of the high-pressure jet grouting pile.

Description

High-pressure jet grouting pile applied to roadbed widening

Technical Field

The invention belongs to the technical field of road and bridge construction equipment, and particularly relates to a high-pressure jet grouting pile applied to roadbed widening.

Background

In the current road foundation reinforcement, high-pressure jet grouting piles are widely used, and the high-pressure jet grouting piles are formed by spraying cement slurry into soil layers and mixing the cement slurry with the soil bodies through high-pressure rotating nozzles.

One patent application with the publication number of CN111155933B discloses a high-pressure jet grouting pile drill bit based on road and bridge construction application, which comprises a rod body and a conical head, wherein a cavity structure is arranged in the rod body, and a slurry conveying pipe is arranged in the cavity; a movable component is also arranged in the cavity of the rod body; the circumference outer wall of the rod body is also provided with a plurality of drilling blades, so that the joint and the spray head assembly can be disconnected rapidly, cement slurry remained in the slurry conveying pipe after grouting of the pile hole is avoided from scattering all around, and waste of the cement slurry is avoided.

The following problems exist in the prior art when in use:

1. when the drill bit and the drill blade rotate downwards to form a pile hole, soil and impurities possibly enter the nozzle assembly to be accumulated because one end of the nozzle assembly is open, so that the problem that slurry cannot be normally discharged because the nozzle assembly is blocked and a slurry inlet in the nozzle assembly is blocked is solved.

2. Before the slurry is conveyed, the soil can be loosened and removed through the loosening rod in the prior art, and due to the difference of underground soil, when the soil and the magazines entering the spray head assembly are the soil with larger viscosity, the loosening rod is easily sucked into the soil, so that the soil cannot be loosened, and the subsequent slurry discharge operation is influenced by blockage when the slurry is discharged.

Therefore, the invention provides the high-pressure jet grouting pile applied to the widening of the roadbed.

Disclosure of Invention

In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.

The technical scheme adopted for solving the technical problems is as follows: the invention discloses a high-pressure jet grouting pile applied to roadbed widening, which comprises a drill bit, wherein a slurry conveying pipe is arranged in the middle of the inside of the drill bit, a water conveying pipe is arranged in the middle of the slurry conveying pipe, a plurality of drilling blades are slidably arranged on the inner wall of the drill bit, a plurality of driving boxes are fixedly connected in the inside of the drill bit, a spray head is arranged on one side of each driving box, the spray head is fixedly connected in the inside of the drill bit, a plurality of through holes are formed in one end of the spray head, close to the driving boxes, of the spray head, a moving pipe is slidably connected with one end of the spray head, a plurality of corrugated pipes are arranged between the moving pipe and the driving boxes, a piston is slidably connected in the inside of the moving pipe, a second spring is fixedly connected between the piston and the inner wall of the moving pipe, the moving pipe is communicated with the slurry conveying pipe through a hose, the middle of the moving pipe is provided with a rotating rod, one end of the rotating rod is slidably penetrates through the driving boxes, the rotating rod is arranged in the inside of the spray head, one end of the rotating rod is fixedly connected with a scraping plate, one end of the rotating rod is slidably connected with the rotating baffle, one end of the rotating rod is fixedly connected with one end of the connecting rod, and the moving end of the connecting rod is fixedly connected with one end of the connecting rod through the rotating baffle, and the moving end is fixedly connected with one end through the connecting rod.

Preferably, one end of the moving rod is rotationally connected with a fourth connecting rod, the rotating plate is rotationally connected with the inside of the rotating rod, one end of the rotating plate is rotationally connected with a third connecting rod, the inside of the rotating rod is slidingly connected with a movable rod, the circumferential surface of the movable rod is rotationally connected with a first connecting rod, one end of the connecting rod is rotationally connected with a second connecting rod, one end of the first connecting rod is rotationally connected with one end of the second connecting rod, one end of the third connecting rod is rotationally connected with one end of the movable rod, and one end of the fourth connecting rod is rotationally connected with the surface of the rotating plate.

Preferably, the inside fixedly connected with sleeve pipe of bull stick, fixedly connected with third spring between sheathed tube inside and the one end of movable rod, the surface of movable rod and sheathed tube inside sliding connection, and movable rod and sheathed tube shape all set up to T shape, and both assorted.

Preferably, the circumference of bull stick is provided with multichannel spout, the size of spout and the size phase-match of connecting rod.

Preferably, one end fixedly connected with slide bar of movable tube, the circumference sliding connection of slide bar has the link, the one end of link and the circumference fixed connection of movable tube, fixedly connected with first spring between the circumference of slide bar and one side of link, the one end of movable tube is provided with the locating hole, and the size of locating hole and shower nozzle assorted.

Preferably, the circumference of bull stick fixedly connected with a plurality of impellers, the one end fixedly connected with screw rod of bull stick, the inside fixedly connected with raceway of defeated thick liquid pipe, fixedly connected with inlet tube and drain pipe between the inside of the circumference of raceway and drive case.

Preferably, the shape of the baffle is set to be fan-shaped, the surface of the baffle is provided with a rounded corner, the shape of the scraping plate is set to be L-shaped, and one ends of the baffle and the scraping plate are attached to the inner circumferential surface of the spray head.

Preferably, the hose is made of telescopic pipes, a limiting block is fixedly connected to the circumferential surface of the movable rod, and the rotary rod drives the movable rod to synchronously rotate through the limiting block.

Preferably, the inside of drill bit is provided with the circular cone spare, the inside fixedly connected with spacing pipe of drill bit, the inside sliding connection of spacing pipe has the locating lever, the inside of spacing pipe and the surface sliding connection of boring the leaf, the one end of locating lever is the arc setting, the one end fixedly connected with connecting seat of locating lever, the inside rotation of boring the leaf is connected with the bolt, there is bolt and connecting seat to pass through the screw thread to be fixed.

Preferably, the inner wall of the limiting pipe is provided with a limiting groove, the surface of the positioning rod is in sliding connection with the inside of the limiting groove, and a fourth spring is fixedly connected between one end of the positioning rod and the inside of the limiting pipe.

The beneficial effects of the invention are as follows:

1. according to the high-pressure jet grouting pile applied to roadbed widening, due to the fact that the baffle and the stirring rod are arranged, one end of the spray head can be sealed when the spray head is not used, so that the problem that the spray head is blocked due to the fact that a large amount of impurities and soil enter the spray head in the high-pressure jet grouting pile in the working process is solved, the follow-up slurry conveying work cannot be normally carried out is solved, when the through holes of the moving pipe and the through holes of the spray head correspond to each other and slurry conveying operation is carried out, the baffle can rotate towards the discharge end of the spray head, the spray head can be opened to facilitate slurry discharge, and soil at the mouth of the spray head can be pushed out in the opening process.

2. According to the high-pressure jet grouting pile applied to roadbed widening, when high-pressure water enters a water delivery pipe through the driving box, the impeller and the rotating rod, the high-pressure water can enter the driving box through the water inlet pipe, the impact force of the high-pressure water can drive the impeller to rotate, the rotating rod can be driven to rotate by rotating the impeller, the rotating rod can drive the scraping plate and the screw rod to rotate, the scraping plate can stir impurities and soil entering the spray head to prevent the soil from accumulating and mixing in the spray pipe to cause blockage, meanwhile, the soft soil layer can be discharged out of the spray pipe when the screw rod rotates, and the problem that the spray pipe is blocked due to the fact that the soil layer enters the spray pipe and adheres to the spray pipe when drilling operation is performed can be avoided.

3. According to the high-pressure jet grouting pile applied to roadbed widening, when the drilling blade is damaged through the bolts and the connecting seat, the fixing between the drilling blade and the positioning rod can be released by rotating the bolts to separate from the connecting seat, so that the drilling blade can be taken down and replaced.

Drawings

The invention is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of a drill bit of the present invention;

FIG. 2 is a cross-sectional view of the internal structure of the drill bit of the present invention;

FIG. 3 is a schematic view of the structure of the bit according to the present invention;

FIG. 4 is a schematic view of the structure of the drive housing and the moving tube of the present invention;

FIG. 5 is a cross-sectional view of the drive housing and the moving tube of the present invention;

FIG. 6 is a side elevational view in cross-section of the drive housing of the present invention;

FIG. 7 is a schematic view of the structure of the turning lever of the present invention;

FIG. 8 is a schematic view of the structure of the movable bar and the shutter of the present invention;

FIG. 9 is an enlarged view of a portion of FIG. 2A in accordance with the present invention;

in the figure: 1. a drill bit; 2. a spray head; 21. a through hole; 3. a drive box; 31. an impeller; 32. a rotating rod; 33. a moving rod; 34. a chute; 4. a moving tube; 41. a slide bar; 42. a connecting frame; 43. a first spring; 44. a second spring; 45. a piston; 46. positioning holes; 5. a scraper; 6. a screw; 7. a connecting rod; 8. a baffle; 9. a sleeve; 91. a third spring; 92. a movable rod; 93. a first link; 94. a second link; 95. a third link; 96. a rotating plate; 97. a fourth link; 10. a slurry conveying pipe; 101. a hose; 102. a bellows; 11. a water pipe; 111. a water inlet pipe; 112. a drain pipe; 12. a conical member; 121. drilling leaves; 122. a bolt; 123. a limiting tube; 124. a positioning rod; 125. a fourth spring; 126. a connecting seat; 127. and a limit groove.

Detailed Description

The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.

Example 1

As shown in fig. 1 to 5, the high-pressure jet grouting pile applied to roadbed widening according to the embodiment of the invention comprises a drill bit 1, wherein a slurry conveying pipe 10 is arranged in the middle of the inside of the drill bit 1, a water conveying pipe 11 is arranged in the middle of the slurry conveying pipe 10, a plurality of drill leaves 121 are slidably arranged on the inner wall of the drill bit 1, a plurality of driving boxes 3 are fixedly connected in the inside of the drill bit 1, a spray head 2 is arranged on one side of each driving box 3, the spray head 2 is fixedly connected in the inside of the drill bit 1, a plurality of through holes 21 are formed in one end of the spray head 2 close to the driving boxes 3, a moving pipe 4 is slidably connected with one end of the spray head 2, a plurality of corrugated pipes 102 are arranged between the moving pipe 4 and the driving boxes 3, a piston 45 is slidably connected in the inside of the moving pipe 4, a second spring 44 is fixedly connected between the piston 45 and the inner wall of the moving pipe 4, the moving pipe 4 and the slurry conveying pipe 10 are communicated through a hose 101, the middle of the moving pipe 4 is rotatably provided with a connecting rod 32, one end of the moving pipe 32 penetrates through the hose 32, one end of the rotating rod 3 is fixedly connected with a connecting rod 33, one end of the connecting rod 33 is fixedly connected with the connecting rod 33, and the connecting rod 33 is fixedly connected with one end of the connecting rod 33, and the connecting rod 33 is fixedly connected with the connecting rod 33 through the connecting rod 33, and the connecting rod 33 is fixedly connected with the connecting rod 33 through the connecting rod 33.

Specifically, in the prior art, when the drill bit 1 and the drill bit 121 rotate downwards and form a pile hole, because one end of the nozzle 2 assembly is open, soil and impurities may enter the nozzle 2 assembly to accumulate, which may not only cause the blockage of the nozzle 2 assembly, but also block the slurry inlet in the nozzle 2 assembly, so that the slurry may not be discharged normally;

when the drill bit 1 works and slurry conveying operation is not performed in an initial state, one sides of the baffle plates 8 and the scraping plates 5 are attached to each other and combined into a sealing plate, so that the spray head 2 is blocked, and soil is reduced from entering the spray head 2 when the drill bit 1 works downwards;

when a slurry conveying operation is required, the slurry conveying pipe 10 sends slurry into the moving pipe 4 through the hose 101, the pressure in the moving pipe 4 is increased, the corrugated pipe 102 stretches to push the moving pipe 4 to slide along the spray head 2, the piston 45 moves forward to contact with one end of the spray head 2 and compress the second spring 44, and after the through hole 21 on the spray head 2 slides into the moving pipe 4, the slurry enters the spray head 2 through the through hole 21; simultaneously, the movable rod 33 is driven to move while the movable rod 4 moves, the movable rod 33 can push the connecting rod 7 to rotate towards the outer side of the spray head 2, so that the connecting rod 7 drives the baffle plate 8 to rotate towards the mud discharge port of the spray head 2, the discharge port of the spray head 2 can be opened to discharge mud, and the baffle plate 8 has the advantage of pushing out mud blocked at one end of the spray head 2 when rotating and opening, thereby solving the problem that a large amount of mud enters the inside of the spray pipe to cause the blockage of the spray pipe when the drill bit 1 works downwards; after the slurry conveying operation is finished, the elastic force of the second spring 44 pushes the moving pipe 4 to move reversely, the connecting rod 7 is reset, the plurality of baffles 8 are reset and matched with the scraping plates 5, and the sealing plates are combined to continuously block the spray head 2.

As shown in fig. 9, one end of the moving rod 33 is rotatably connected with a fourth link 97, the inside of the rotating rod 32 is rotatably connected with a rotating plate 96, one end of the rotating plate 96 is rotatably connected with a third link 95, the inside of the rotating rod 32 is slidably connected with a movable rod 92, the circumferential surface of the movable rod 92 is rotatably connected with a first link 93, one end of the connecting rod 7 is rotatably connected with a second link 94, one end of the first link 93 is rotatably connected with one end of the second link 94, one end of the third link 95 is rotatably connected with one end of the movable rod 92, and one end of the fourth link 97 is rotatably connected with the surface of the rotating plate 96.

Specifically, the link 42 moves, the link 42 drives the movable rod 33 to slide in the interior of the rotating rod 32 and drives the fourth connecting rod 97 to rotate, the synchronous rotating plate 96 rotates when the fourth connecting rod 97 rotates, the rotating plate 96 drives the third connecting rod 95 to move, the movable rod 92 horizontally slides, the movable rod 92 can drive the first connecting rod 93 to rotate in the moving process, the first connecting rod 93 pulls the second connecting rod 94 to synchronously rotate, the second connecting rod 94 pulls the connecting rod 7 to rotate at the moment, the connecting rod 7 drives the baffle 8 to rotate towards the mud outlet of the spray head 2, the outlet of the spray head 2 can be opened to discharge mud, the baffle 8 has the advantage of extruding and pushing out soil blocked at one end of the spray head 2 when the spray pipe is opened in a rotating mode, the fourth connecting rod 97 can be driven to reset when the movable rod 33 resets, the fourth connecting rod 97 can be driven to rotate to an initial position in the resetting process, the rotating plate 96 drives the third connecting rod 95 to rotate, the movable rod 92 is driven to horizontally slide and reset in the moving process, the first connecting rod 93 can be driven to rotate, the second connecting rod 94 is pulled to synchronously rotate at the moment, the second connecting rod 94 is pulled by the second connecting rod 94 to synchronously rotate, and the second connecting rod 7 is pulled to rotate 7 to drive the two sides of the spray head 2 to be attached to the spray head 2, and the spray head 2 is attached to the two sides of the spray head 2, and the spray head 2 is closed, and the spray head is sealed.

As shown in fig. 8, the sleeve 9 is fixedly connected to the inside of the rotating rod 32, a third spring 91 is fixedly connected between the inside of the sleeve 9 and one end of the movable rod 92, the surface of the movable rod 92 is slidably connected with the inside of the sleeve 9, and the movable rod 92 and the sleeve 9 are both T-shaped and matched.

Specifically, when the movable rod 92 moves during slurry conveying, one end of the movable rod 92 can slide in a limiting manner in the sleeve 9 and stretch the third spring 91, and after slurry conveying is finished, the third spring 91 can quickly drive the movable rod 92 to reset and operate, and the stability of the movable rod 92 is maintained.

As shown in fig. 7, the circumference of the rotating rod 32 is provided with a plurality of sliding grooves 34, and the size of the sliding grooves 34 is matched with the size of the connecting rod 7.

Specifically, when the slurry is conveyed or conveyed, the connecting rod 7 rotates, at this time, the connecting rod 7 rotates in the chute 34, and the connecting rod 7 can be driven to synchronously rotate through the chute 34 while the moving rod 33 is kept stable by the limiting groove 127 of the connecting rod 7 through the chute 34, and the rotating rod 32 rotates.

As shown in fig. 3 to 5, one end of the moving tube 4 is fixedly connected with a sliding rod 41, a circumferential surface of the sliding rod 41 is slidably connected with a connecting frame 42, one end of the connecting frame 42 is fixedly connected with the circumferential surface of the moving tube 4, a first spring 43 is fixedly connected between the circumferential surface of the sliding rod 41 and one side of the connecting frame 42, one end of the moving tube 4 is provided with a positioning hole 46, and the size of the positioning hole 46 is matched with that of the spray head 2.

Specifically, after the slurry enters the moving pipe 4, the moving pipe 4 moves on the surface of the sliding rod 41 and stretches the first spring 43 to move to one end of the spray head 2, when the moving pipe 4 moves, one end of the spray head 2 is positioned through the positioning hole 46 and pushes the piston 45 to squeeze the second spring 44, the moving pipe 4 can be quickly driven to carry out reset operation after the slurry is conveyed through the first spring 43, the slurry conveying pipe 10 can be quickly sealed, the moving rod 33 can be driven to reset to seal the interior of the spray pipe, and the stability of the piston 45 at one end of the moving rod 33 can be kept through the second spring 44, so that the slurry is quickly sealed to the moving pipe 4 after the slurry is conveyed, and leakage of the slurry is avoided.

As shown in fig. 3 to 5, a comparative example one, in which another embodiment of the present invention is: the circumference of bull stick 32 fixedly connected with a plurality of impellers 31, the one end fixedly connected with screw rod 6 of bull stick 32, the inside fixedly connected with raceway 11 of defeated thick liquid pipe 10, fixedly connected with inlet tube 111 and drain pipe 112 between the circumference of raceway 11 and the inside of driving case 3.

Specifically, when the drill bit 1 works and high-pressure water is conveyed to the inside of the water conveying pipe 11, after the high-pressure water enters the water conveying pipe 11, the high-pressure water flows into the inside of the driving box 3 through the water inlet pipe 111, enters the inside of the impeller 31 and drives the impeller 31 to rotate and then enters the water outlet pipe 112, finally is discharged through the water outlet pipe 112, the impeller 31 drives the rotating rod 32 to rotate, the rotating rod 32 can drive the screw rod 6 and the scraping plate 5 to rotate, soil can be broken up through the rotation of the scraping plate 5 to avoid soil accumulation, and meanwhile, the screw rod 6 discharges the broken soil into the inside of the spray pipe to avoid the problem that the spray pipe is blocked due to the influence of the soil.

As shown in fig. 7, the shape of the baffle 8 is set to be a sector, the surfaces of the baffle 8 are rounded, the shape of the scraper 5 is set to be an L-shape, and one ends of the baffle 8 and the scraper 5 are attached to the inner circumferential surface of the nozzle 2.

Specifically, when needs shower nozzle 2 do not need to carry mud, can closely paste between baffle 8 and the scraper blade 5 and prevent to get into and pile up in the inside of earth to not only increase the working strength of follow-up staff clearance, thereby can also avoid the spray tube to block up and influence follow-up work of carrying mud, cause the problem of work progress delay, thereby when shower nozzle 2 carries mud, baffle 8 can take place to rotate and open the spray tube and carry mud, can extrude the earth of shower nozzle 2 one end when baffle 8 slope rotates simultaneously, make the thick liquids discharge fast.

As shown in fig. 5, the hose 101 is made of a telescopic tube, a limiting block is fixedly connected to the circumferential surface of the moving rod 33, and the rotating rod 32 drives the moving rod 33 to rotate synchronously through the limiting block.

Specifically, through setting the material of hose 101 to flexible pipe, conveniently when carrying mud, hose 101 can stretch out and draw back when moving pipe 4 moves along with, stably keeps carrying the work of mud, not only makes things convenient for movable rod 33 at the inside spacing slip of bull stick 32 through the stopper, and the stopper can also drive movable rod 33 synchronous rotation when bull stick 32 pivoted simultaneously.

As shown in fig. 2 to 3, the conical member 12 is disposed in the drill bit 1, a limiting pipe 123 is fixedly connected to the drill bit 1, a positioning rod 124 is slidably connected to the inside of the limiting pipe 123, the inside of the limiting pipe 123 is slidably connected to the surface of the drill bit 121, one end of the positioning rod 124 is in an arc shape, a connecting seat 126 is fixedly connected to one end of the positioning rod 124, a bolt 122 is rotatably connected to the inside of the drill bit 121, and the bolt 122 and the connecting seat 126 are fixed through threads.

Specifically, the drill bit 1 drives the drill bit 121 to descend and rotate into the soil, pile holes can be formed rapidly through the drill bit 121, when the size of the pile holes needs to be adjusted, the outside high-pressure medium enters the inside of the conical part 12, the conical part 12 slides downwards and extrudes the positioning rod 124, the positioning rod 124 drives the drill bit 121 to extend out of the inside of the drill bit 1 to a proper height, the proper pile holes can be adjusted as required, when the drill bit 121 rotates, the bolts 122 can be rotated to separate from the connecting seats 126, the fixing between the positioning rod 124 and the drill bit 121 can be released, and accordingly the drill bit 121 can be replaced rapidly.

As shown in fig. 2, the inner wall of the limiting tube 123 is provided with a limiting groove 127, the surface of the positioning rod 124 is slidably connected with the inside of the limiting groove 127, and a fourth spring 125 is fixedly connected between one end of the positioning rod 124 and the inside of the limiting tube 123.

Specifically, when the bolt 122 and the connecting seat 126 are prevented from being in threaded connection through the limiting groove 127, the positioning rod 124 rotates, and when the internal pressure of the conical part 12 is reduced and the conical part is enabled to rise, the fourth spring 125 can drive the positioning rod 124 and the drill bit 121 to rise so as to adjust the extension length of the drill bit 121.

The working principle is that at this moment, the drill bit 1 drives the drill leaves 121 to descend, the drill leaves 121 drive the drill leaves 121 to descend into the soil, the drill leaves 121 extending out of the rod body are utilized to act on the soil to finally form pile holes, when the size of the pile holes needs to be adjusted, external high-pressure medium enters the inside of the conical piece 12, the conical piece 12 slides downwards and presses the positioning rod 124, the positioning rod 124 drives the drill leaves 121 to extend to a proper length from the inside of the drill bit 1, and the size of the pile holes can be adjusted;

when the drill bit 1 descends and high-pressure water is conveyed into the water conveying pipe 11, after the high-pressure water enters the water conveying pipe 11, the high-pressure water flows into the driving box 3 through the water inlet pipe 111, enters the impeller 31 and drives the impeller 31 to rotate and then enters the water discharging pipe 112, finally, the high-pressure water is discharged through the water discharging pipe 112, the impeller 31 drives the rotating rod 32 to rotate, the rotating rod 32 can drive the screw rod 6 and the scraping plate 5 to rotate, soil can be broken up through the rotation of the scraping plate 5 to avoid soil accumulation, and meanwhile, the broken soil is discharged into the spray pipe through the screw rod 6 to avoid the problem that the spray pipe is blocked due to the influence of the soil;

when the drill bit 1 works, and when slurry delivery operation is not carried out, two sides of the baffle 8 are attached to one side of the scraping plate 5, and the baffle 8 and the scraping plate 5 in attached state are matched with the inner wall of the spray nozzle 2, so that the baffle 8 and the scraping plate 5 can carry out sealing operation on the inside of the spray nozzle 2, when slurry delivery operation is required, the slurry delivery pipe 10 sends slurry into the inside of the moving pipe 4 through the hose 101, the inside of the moving pipe 4 is subjected to the impulsive force of the slurry and slides on the circumferential surface of the sliding rod 41, in the sliding process of the moving pipe 4, the piston 45 is extruded by one end of the spray nozzle 2 when following the movement, the inner wall of the moving pipe 4 is contacted with the through hole 21, soil enters the inside of the spray nozzle through the through hole 21, the moving pipe 4 moves while driving the connecting frame 42, the connecting frame 42 drives the moving rod 33 to slide in the inside of the rotating rod 32 and drive the fourth connecting rod 97 to rotate, the rotating plate 96 rotates synchronously, the rotating plate 96 drives the third connecting rod 95 to move horizontally, the moving rod 92 slides horizontally, and the moving rod 92 rotates synchronously, and the moving rod 92 moves synchronously, and the first connecting rod 93 is driven by the second connecting rod 94 to rotate, and the second connecting rod 94 rotates and the spray nozzle 2 to rotate, and the discharge outlet 2 is opened.

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 without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. Be applied to high pressure jet grouting stake that road bed widened, its characterized in that: including drill bit (1), the inside middle part of drill bit (1) is provided with thick liquid delivery pipe (10), the middle part of thick liquid delivery pipe (10) is provided with raceway (11), the inner wall slip of drill bit (1) is provided with a plurality of brill leaf (121), the inside fixedly connected with of drill bit (1) is a plurality of driving case (3), every one side of driving case (3) all is provided with shower nozzle (2), shower nozzle (2) fixed connection is in the inside of drill bit (1), a plurality of through-holes (21) have been seted up to the one end that shower nozzle (2) are close to driving case (3), the one end sliding seal of shower nozzle (2) is connected with moving tube (4), be provided with a plurality of bellows (102) between moving tube (4) and driving case (3), the inside sliding connection of moving tube (4) has piston (45), fixedly connected with second spring (44) between the inner wall of piston (45) and moving tube (4), moving tube (4) and thick liquid delivery pipe (10) pass through hose (101), moving tube (4) one end is close to driving tube (32) and is provided with the bull stick (32) in the inside running through of driving case (32), the utility model discloses a shower nozzle, including bull stick (32), scraper blade (5) are all laminated mutually to the periphery of bull stick (32), the inside sliding connection of bull stick (32) has movable rod (33), movable rod (33) and movable tube (4) fixed connection, the one end rotation of bull stick (32) is connected with connecting rod (7), the one end fixedly connected with baffle (8) of connecting rod (7), and the both ends of baffle (8) all laminate mutually with the lateral wall of scraper blade (5), drive movable rod (33) through movable tube (4) and remove, can promote connecting rod (7) to shower nozzle (2) outside direction rotation.

2. A high pressure jet grouting pile for widening roadbed according to claim 1, wherein: the one end rotation of movable rod (33) is connected with fourth connecting rod (97), the inside rotation of bull stick (32) is connected with rotation board (96), the one end rotation of rotation board (96) is connected with third connecting rod (95), the inside sliding connection of bull stick (32) has movable rod (92), the circumference of movable rod (92) rotates and is connected with first connecting rod (93), the one end rotation of connecting rod (7) is connected with second connecting rod (94), the one end of first connecting rod (93) and the one end rotation of second connecting rod (94) are connected, the one end of third connecting rod (95) and the one end rotation of movable rod (92) are connected, the one end of fourth connecting rod (97) and the surface rotation of rotation board (96) are connected.

3. A high pressure jet grouting pile for widening roadbed according to claim 1, wherein: the inside fixedly connected with sleeve pipe (9) of bull stick (32), fixedly connected with third spring (91) between the one end of the inside of sleeve pipe (9) and movable rod (92), the inside sliding connection of the surface of movable rod (92) and sleeve pipe (9), and the shape of movable rod (92) and sleeve pipe (9) all sets up to T shape, and both assorted.

4. A high pressure jet grouting pile for widening roadbed according to claim 1, wherein: the circumference of bull stick (32) is provided with multichannel spout (34), the size of spout (34) and the size phase-match of connecting rod (7).

5. A high pressure jet grouting pile for widening roadbed according to claim 1, wherein: one end fixedly connected with slide bar (41) of movable tube (4), the circumference sliding connection of slide bar (41) has link (42), the one end of link (42) and the circumference fixed connection of movable tube (4), fixedly connected with first spring (43) between the circumference of slide bar (41) and one side of link (42), the one end of movable tube (4) is provided with locating hole (46), and the size of locating hole (46) and the size assorted of shower nozzle (2).

6. A high pressure jet grouting pile for widening roadbed according to claim 1, wherein: the rotary rod (32) is fixedly connected with a plurality of impellers (31) on the circumference surface, one end of the rotary rod (32) is fixedly connected with a screw rod (6), a water pipe (11) is fixedly connected to the inside of the slurry conveying pipe (10), and a water inlet pipe (111) and a water outlet pipe (112) are fixedly connected between the circumference surface of the water pipe (11) and the inside of the driving box (3).

7. A high pressure jet grouting pile for widening roadbed according to claim 1, wherein: the shape of baffle (8) sets up to fan-shaped, and the surface of baffle (8) is the fillet setting, the shape of scraper blade (5) sets up to the L type, the one end of baffle (8) and scraper blade (5) all laminates with the inner circumference of shower nozzle (2) mutually.

8. A high pressure jet grouting pile for widening roadbed according to claim 1, wherein: the hose (101) is made of telescopic pipes, a limiting block is fixedly connected to the circumferential surface of the movable rod (33), and the rotary rod (32) drives the movable rod (33) to synchronously rotate through the limiting block.

9. A high pressure jet grouting pile for widening roadbed according to claim 1, wherein: the inside of drill bit (1) is provided with circular cone spare (12), the inside fixedly connected with spacing pipe (123) of drill bit (1), the inside sliding connection of spacing pipe (123) has locating lever (124), the inside of spacing pipe (123) and the surface sliding connection of boring leaf (121), the one end of locating lever (124) is the arc setting, the one end fixedly connected with connecting seat (126) of locating lever (124), the inside rotation of boring leaf (121) is connected with bolt (122), there is bolt (122) and connecting seat (126) to pass through the screw thread fastening.

10. A high pressure jet grouting pile for widening roadbed according to claim 9, wherein: the inner wall of spacing pipe (123) is provided with spacing groove (127), the inside sliding connection of the surface of locating lever (124) and spacing groove (127), fixedly connected with fourth spring (125) between the inside of one end of locating lever (124) and spacing pipe (123).