CN218990172U - Water-saving type bored pile dredging device - Google Patents

Abstract

The application discloses water-saving bored pile dredging device, it includes the mounting panel, the perforation has been run through on the mounting panel, be provided with the breaker who is used for smashing the rubble residue on the mounting panel and be used for clearing up the clearance mechanism of drilling with the rubble residue; the crushing device comprises a mounting column penetrating through the perforation, a plurality of cutter groups are arranged on the mounting column along the axial direction of the mounting column, each cutter group comprises a cutter rest, the cutter rest and the mounting column form an included angle, and a side cutter for cleaning the side wall of the drilling hole and a bottom cutter for crushing broken stone at the bottom of the drilling hole are fixedly connected on the cutter rest; the crushing device further comprises a first motor for driving the mounting column to rotate around the axial direction of the mounting column and a lifting driving mechanism for driving the mounting column to move along the axial direction of the mounting column. This application has the effect of smashing great rubble residue in the drilling and making it be convenient for clear up.

Description

Water-saving type bored pile dredging device

Technical Field

The application relates to the technical field of dredging, in particular to a water-saving type bored pile dredging device.

Background

The bored pile is a pile which is made by forming pile holes in foundation soil by means of mechanical boring, steel pipe soil squeezing, manual excavation and the like on an engineering site, placing a reinforcement cage therein and pouring concrete.

Because a large amount of broken stone exists in the drilling process so that the side wall and the bottom wall of the drill hole are not smooth, meanwhile, broken stone residues falling into the bottom of the drill hole are easy to cause slurry precipitation at the bottom of the drill hole, so that the drill hole is at collapse risk, and the drill hole needs to be cleaned before the steel reinforcement cage is placed in the drill hole.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: when the borehole is cleaned, a water flushing method is generally used for dredging, namely, high-pressure water is used for flushing the borehole, so that sediments are turned up, and due to the fact that the volume and the weight of part of residues are large, the broken stone residues with large volume and weight are difficult to clean effectively through the high-pressure water flushing method.

Disclosure of Invention

In order to improve the problem that great rubble residue is difficult to the clearance in the drilling, this application provides a water-saving drilling bored concrete pile dredging device.

The application provides a water-saving bored concrete pile dredging device adopts following technical scheme:

a water-saving type bored pile dredging device comprises a mounting plate, wherein a through hole is formed in the mounting plate in a penetrating mode, and a crushing device for crushing broken stone residues and a cleaning mechanism for cleaning the broken stone residues out of a drilled hole are arranged on the mounting plate; the crushing device comprises a mounting column penetrating through the perforation, a plurality of cutter groups are arranged on the mounting column along the axial direction of the mounting column, each cutter group comprises a cutter rest, the cutter rest and the mounting column form an included angle, and a side cutter for cleaning the side wall of the drilling hole and a bottom cutter for crushing broken stone at the bottom of the drilling hole are fixedly connected on the cutter rest; the crushing device further comprises a first motor for driving the mounting column to rotate around the axial direction of the mounting column and a lifting driving mechanism for driving the mounting column to move along the axial direction of the mounting column.

Through adopting above-mentioned technical scheme, place the mounting panel in the ground of drilling week side and make perforation and drilling intercommunication, with erection column and side knife and the bed knife that set up on the erection column stretch into in the drilling from perforation department and start first motor and order about the erection column rotation, and then drive side knife along drilling lateral wall rotation and realize the clearance to drilling lateral wall, drive the erection column simultaneously along its axial decline through lifting drive mechanism, the in-process side knife can be with the rubble excision of drilling lateral wall and scrape and make it drop in the drilling bottom, the erection column is to the bed knife behind the rubble butt of drilling bottom, first motor orders about the erection column rotation can drive the bed knife and smash the rubble of drilling bottom, the bed knife smash the great rubble of drilling bottom volume back, can clear up the drilling with convenient rubble through clearance mechanism, realize the desilting to the drilling.

Optionally, the lifting driving mechanism comprises a support plate and sliding rails fixedly connected to the mounting plate and respectively positioned at two opposite sides of the through hole, the length direction of each sliding rail is perpendicular to the plate surface of the mounting plate, the support plate is connected to the mounting plate in a sliding manner through the sliding rails, the first motor is arranged on the support plate, and the output end of the first motor penetrates through the support plate and is fixedly connected with the mounting column; the mounting plate is also provided with a driving assembly for driving the support plate to slide along the sliding rail.

Through adopting above-mentioned technical scheme, when dredging the drilling, the position of adjustment mounting panel to the length direction of slide rail and drilling axial direction are parallel, and the extension board is driven to move along the slide rail through drive assembly at this moment can drive first motor and erection column along drilling axial direction, makes side knife and the bed knife rotation that set up on the erection column drop to the drilling bottom, is convenient for smash the rubble residue in the drilling.

Optionally, the driving assembly includes two threaded rods, the two threaded rods are fixedly connected to the end part of the support plate, which is close to the sliding rail and drives one end, and the axial direction of the threaded rods is parallel to the moving direction of the support plate; the driving assembly further comprises worm wheels rotatably arranged on the sliding rails, the bolt rod is in threaded connection with the center of the worm wheels and penetrates through the worm wheels, the sliding rails are rotatably provided with worms in meshed connection with the two worm wheels, and the sliding rails are further provided with second motors for driving the worms to rotate; the threaded rod is provided with a guide structure for limiting the threaded rod to rotate along with the rotation of the worm wheel.

Through adopting above-mentioned technical scheme, the worm is driven to the second motor and is rotated, and the worm drives two worm wheels and moves with moving, and the threaded rod is difficult to rotate with moving along the worm wheel rotation under the restriction of guide structure, consequently threaded connection moves along its axial in the threaded rod of worm, and two threaded rods move with moving and then drive extension board, the first motor on the extension board and erection column go up and down, makes the bed knife of rigid coupling on the erection column descend to the drilling bottom, smashes the rubble residue of deposit in the drilling bottom.

Optionally, the guide structure include the rigid coupling in guide block on the slide rail with set up in guide slot on the threaded rod, the guide block with guide slot slip adaptation, the guide slot is followed the radial seting up of threaded rod, the length direction of guide slot is on a parallel with the axial of threaded rod.

Through adopting above-mentioned technical scheme, because the guide way radially sets up along the threaded rod, consequently because guide way cell wall and guide block complex restriction, the threaded rod is difficult to rotate around its axial along with the worm wheel together, consequently the threaded rod is final along its axial displacement, and then realizes the lift of extension board.

Optionally, the tool rest passes through the mounting column, and a locking piece for locking the tool rest to the mounting column is further arranged on the mounting column.

Through adopting above-mentioned technical scheme, use the locking piece to lock the knife rest on the erection column, realize the fixed to the knife rest, the knife rest rigid coupling has the one end of side knife to pass the length difference of erection column, can be applicable to the drilling to the internal diameter difference clear up.

Optionally, a long groove along the length direction of the tool rest is formed in one side of the tool rest, the locking piece is a locking bolt, and the locking bolt threads penetrate through one side of the mounting column and are abutted against the tool rest at the long groove.

Through adopting above-mentioned technical scheme, at first according to the length that drilling aperture adjustment knife rest passed the erection column, with locking bolt threaded connection and run through one side of erection column and support tightly in elongated slot cell wall department after the adjustment is accomplished, and then realize fixing and locking to the knife rest, be fixed in the position of side knife clearance drilling lateral wall of being convenient for with the knife rest.

Optionally, the cleaning mechanism includes water injection pipe and the thick liquid pipe of taking out of perforation intercommunication, set up in intake pump on the water injection pipe and set up in go out the water pump on the thick liquid pipe.

By adopting the technical scheme, after the crushing device crushes the broken stone residues, the water injection pipe is inserted into the perforation and water is injected into the drilling hole through the water inlet pump, the first motor is started again to enable the mounting column to rotate so as to drive the tool rest to rotate, the broken stone residues and the water flow are uniformly mixed into slurry, the slurry pumping pipe extends into the drilling hole, the slurry which is uniformly mixed is pumped out of the slurry pumping pipe through the water outlet pump, the broken stone residues after degree crushing are cleaned, and the broken stone residues at the bottom of the drilling hole can be cleaned out of the drilling hole well; because crushed broken stone residues are small in size and light in weight, and the broken stone residues are not easy to deposit under the stirring effect of the tool rest when being mixed with water to form slurry, the slurry containing the broken stone residues can be pumped out easily through the slurry pumping pipe and the water outlet pump, a large amount of water flow is not needed for flushing the drilled holes under high pressure, the cleaning effect is good, and water resources are saved.

Optionally, a plurality of mounting holes are formed in the mounting plate in a penetrating manner.

Through adopting above-mentioned technical scheme, the mounting hole can be convenient for hang the mounting panel and put in drilling department, and after the mounting panel was placed, also can be fixed the mounting panel from the practical instrument of mounting hole department like the bolt, avoids the mounting panel to rock as far as possible at breaker during operation.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the mounting plate is placed on the ground on the periphery of the drilling hole and enables the perforation to be communicated with the drilling hole, the mounting column, the side knife and the bottom knife arranged on the mounting column extend into the drilling hole from the perforation position, the first motor is started to drive the mounting column to rotate, the side knife is further driven to rotate along the side wall of the drilling hole to clean the side wall of the drilling hole, the mounting column is driven to descend along the axial direction through the lifting driving mechanism, broken stone on the side wall of the drilling hole can be cut off and scraped off in the descending process to enable the broken stone on the side wall of the drilling hole to fall to the bottom of the drilling hole, after the broken stone on the bottom of the drilling hole is abutted by the mounting column, the first motor drives the mounting column to rotate to drive the bottom knife to crush the broken stone on the bottom of the drilling hole, and after the broken stone with larger volume on the bottom of the drilling hole is crushed, the broken stone can be cleaned out of the drilling hole conveniently through the cleaning mechanism, so that dredging of the drilling hole is realized;

2. the tool rest is locked on the mounting column by using the locking bolt, so that the tool rest is fixed, and the end, fixedly connected with the side tool, of the tool rest penetrates through the mounting column in different lengths, so that the tool rest can be suitable for cleaning drilling holes with different inner diameters;

3. the mounting hole can be convenient for hang the mounting panel and put in drilling department, and the mounting panel is placed the completion back, also can be fixed the mounting panel from the practical instrument of mounting hole department like the bolt, avoids the mounting panel to rock as far as possible at breaker during operation.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present application.

Fig. 2 is a schematic structural view mainly used for showing a cutter set according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of the driving assembly according to the embodiment of the present application.

Reference numerals: 10. drilling holes; 11. a mounting plate; 12. perforating; 13. a mounting hole; 2. a cleaning mechanism; 21. a water injection pipe; 22. a water inlet pump; 23. a pulp pumping pipe; 24. a water outlet pump; 3. a mounting column; 4. a cutter set; 41. a tool holder; 42. a side cutter; 43. a bed knife; 44. a long groove; 45. a locking bolt; 46. a threaded hole; 5. a first motor; 6. a lifting driving mechanism; 61. a support plate; 621. a slide rail; 622. reinforcing plates; 623. a support rod; 624. a slide block; 63. a drive assembly; 631. a threaded rod; 632. a worm wheel; 633. a worm; 634. a second motor; 635. a guide block; 636. a guide groove.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-3.

The embodiment of the application discloses a water-saving bored pile dredging device. Referring to fig. 1, the water-saving bored pile dredging device comprises a mounting plate 11 with a rectangular cross section, a through hole 12 is formed in the center of the mounting plate 11 in a penetrating manner, mounting holes 13 are formed in the four corners of the mounting plate 11 in a penetrating manner, a crushing device for crushing broken stone residues and a cleaning mechanism 2 for cleaning the broken stone residues out of a drilling hole 10 are arranged on the mounting plate 11, the mounting holes 13 can be convenient for ropes to pass through, the mounting plate 11 is placed at the drilling hole 10 in a hoisting manner, the through hole 12 is communicated with the drilling hole 10, the mounting plate 11 can be fixed on the ground from the mounting holes 13 through bolt tools after the mounting plate 11 is horizontally placed, and displacement of the mounting is avoided as much as possible.

After the mounting plate 11 is placed, broken stones on the side wall of the drilling hole 10 are scraped by the crushing device, and broken stones deposited at the bottom of the drilling hole 10 are crushed, and crushed broken stone residues are cleaned by the cleaning mechanism 2, so that dredging of the bored pile is completed.

Referring to fig. 1 and 2, the crushing device comprises a mounting column 3 penetrating through a hole 12, the mounting column 3 in the embodiment of the application is a rectangular column, a cutter set 4 is arranged at one end part of the mounting column 3 extending into the hole 10, the cutter set 4 comprises a cutter rest 41, the cutter rest 41 is a rectangular plate, the length direction of the cutter rest 41 is perpendicular to the length direction of the mounting column 3, the cutter rest 41 penetrates through the mounting column 3, a side cutter 42 for cleaning the side wall of the hole 10 is fixedly connected with one end face of the cutter rest 41 in the length direction, and a bottom cutter 43 for crushing broken stones at the bottom of the hole 10 is fixedly connected with one end of the cutter rest 41 far away from the mounting plate 11.

When the tool rest 41 slides in the mounting column 3, the tool rest 41 is fixedly connected with the end of the side tool 42 and the side wall of the mounting column 3, the tool rest 41 can be suitable for drilling holes 10 with different apertures, the tool rest 41 is fixed at the moment, and the side tool 42 can be driven to clean the side wall of the drilling hole 10 by rotating the mounting column 3, so that a locking piece for locking the tool rest 41 on the mounting column 3 is further arranged on the mounting column 3.

Specifically, referring to fig. 2, the locking member in this embodiment is a locking bolt 45, a long groove 44 along the length direction of the locking member is provided on one side of the tool rest 41, a threaded hole 46 is provided on the mounting post 3 in a penetrating manner, the locking bolt 45 is abutted against the bottom wall of the long groove 44 after passing through the threaded hole 46, so as to fix the tool rest 41 on the mounting post 3, fix the distance between one end of the tool rest 41 fixedly connected with the side tool 42 and the mounting post 3, and the tool rest 41 and the mounting post 3 with rectangular cross sections enable the connection between the tool rest 41 and the mounting post 3 to be more stable, so that the tool rest 41 is prevented from falling off from the mounting post 3 as much as possible.

In another possible embodiment, the lower end surface of the mounting post 3 is fixedly connected with a limiting plate at two opposite positions, the limiting plate is obliquely arranged, one end of the limiting plate away from the mounting post 3 is abutted against the side wall of the bottom knife 43, and the supporting of the knife rest 41 is further provided through the limiting plate, so that the knife rest 41 is prevented from falling off from the mounting post 3.

Referring to fig. 1, the crushing device further comprises a first motor 5 for driving the mounting column 3 to rotate about its axis and a lifting drive 6 for driving the mounting column 3 to move along its axis. The first motor 5 drives the mounting column 3 to rotate and can drive the side knife 42 to rotate along the side wall of the drilling hole 10, so that the side wall of the drilling hole 10 is cleaned, meanwhile, the lifting driving mechanism 6 drives the mounting column 3 to move downwards, the mounting column 3 can drive the side knife 42 to clean the side wall of the drilling hole 10 well, meanwhile, the bottom knife 43 is lowered to the bottom of the drilling hole 10, at the moment, the first motor 5 rotates and can drive the bottom knife 43 to rotate, and broken stone residues deposited at the bottom of the drilling hole 10 are crushed.

With continued reference to fig. 1, the lifting driving mechanism 6 in the embodiment of the present application includes a rectangular support plate 61 and sliding rails 621 fixedly connected to the mounting plate 11 and respectively located at two opposite sides of the through hole 12, the length direction of the sliding rails 621 is perpendicular to the plate surface of the mounting plate 11, two opposite sides of the sliding rails 621 are fixedly connected with reinforcing plates 622 with right-angled triangle cross sections, one side of each reinforcing plate 622 corresponding to one right-angle side is fixedly connected with the sliding rail 621, and one side of each reinforcing plate 622 corresponding to the other right-angle side is fixedly connected with the mounting plate 11, so as to avoid shaking of the sliding rails 621 to a certain extent; the support plate 61 has the support rod 623 fixedly connected at the both ends of length direction, and the support rod 623 is kept away from the one end rigid coupling of support plate 61 has the slider 624 with slide rail 621 slip fit, and support plate 61 slides through the cooperation of slider 624 and slide rail 621 and is connected on mounting panel 11.

The first motor 5 is fixedly connected to the support plate 61, and the output end of the first motor 5 passes through the support plate 61 and is fixedly connected with one end of the mounting column 3 far away from the cutter set 4, so that the mounting column 3 can be driven to lift by driving the support plate 61 to lift. The mounting plate 11 is further provided with a driving component 63 for driving the support plate 61 to slide along the sliding rail 621.

Referring to fig. 2 in combination, the driving assembly 63 includes two threaded rods 631, one end of each threaded rod 631 is fixedly connected to the end face of the slider 624 near the mounting plate 11, and the axial direction of each threaded rod 631 is perpendicular to the plate face of the mounting plate 11; the driving assembly 63 further comprises two worm gears 632 rotatably connected to the sliding rail 621, and one end of the threaded rod 631 away from the sliding block 624 is threaded through the center of the worm gears 632; the slide rails 621 are further rotatably connected with a worm 633, the worm 633 is engaged with two worm gears 632, and a second motor 634 for driving the worm 633 to rotate is further arranged on one slide rail 621.

With continued reference to fig. 2, the threaded rod 631 is further provided with a guide structure for restricting rotation of the threaded rod 631 as the worm gear 632 rotates. The guide structure includes the guide block 635 of rigid coupling on slide rail 621 and sets up the guide way 636 on threaded rod 631, and the guide block 635 tip in this embodiment is the square, and guide way 636 is the square groove of pegging graft the adaptation in guide block 635, and guide way 636 sets up in threaded rod 631 one side that is close to slide rail 621, and guide way 636 radially sets up along threaded rod 631 and the length direction of guide way 636 is on a parallel with the axial of threaded rod 631, and guide block 635 passes slide rail 621 and stretches into in the guide way 636, has restricted threaded rod 631 around its axial rotation through the cooperation of guide block 635 and guide way 636.

The second motor 634 drives the worm 633 to rotate, the worm 633 further drives the two worm gears 632 to synchronously rotate, and due to the limitation of the guiding structure, the threaded rod 631 is difficult to synchronously rotate along with the worm gears 632, so that the threaded rod 631 finally moves along the axial direction thereof, that is, the two threaded rods 631 synchronously move up and down along the axial direction of the drill hole 10, and further drives the support plate 61 fixedly connected to the threaded rod 631, the second motor 634, the mounting column 3 and the cutter set 4 to move up and down along the axial direction of the drill hole 10. The second motor 634 drives the mounting column 3 to descend so that the bed knife 43 is positioned at the bottom of the drill hole 10 for crushing the crushed stone residues at the bottom of the drill hole 10.

After the broken stone residues in the drill hole 10 are crushed through the cooperation of the bottom cutter 43 and the side cutters 42, the residues need to be cleaned by the cleaning mechanism 2.

Referring back to fig. 1, the cleaning mechanism 2 includes a water injection pipe 21 and a slurry pumping pipe 23, after the residue is crushed, the water injection pipe 21 and the slurry pumping pipe 23 extend into the drill hole 10 from the perforated hole 12, a water inlet pump 22 connected with the water injection pipe 21 and a water outlet pump 24 connected with the slurry pumping pipe 23 are further arranged on the mounting plate 11, the water inlet pump 22 is started to inject water into the drill hole 10 through the water injection pipe 21, and the water outlet pump 24 is started to pump water in the drill hole 10 through the slurry pumping pipe 23.

After the broken stone residues are crushed by the crushing device, the water injection pipe 21 is inserted into the perforation 12 and water is injected into the drilling 10 through the water inlet pump 22, the first motor 5 is started again to enable the mounting column 3 to rotate so as to drive the tool rest 41 to rotate, the broken stone residues and the water flow are uniformly mixed into slurry, the slurry which is uniformly mixed is pumped out of the drilling 10 through the slurry pumping pipe 23 and the water outlet pump 24, and finally dredging of the bored pile is achieved.

The implementation principle of the water-saving bored pile dredging device provided by the embodiment of the application is as follows: cleaning and crushing broken stone residues at the bottom of the drill hole 10 and on the side wall of the drill hole 10 respectively through a bottom cutter 43 and a side cutter 42; the distance between the side cutter 42 and the mounting column 3 is adjusted through the matching of the locking bolt 45 and the long groove 44 so as to be suitable for the drilling holes 10 with different apertures; the first motor 5 drives the mounting column 3 to drive the side cutter 42 and the bottom cutter 43 to rotate and crush the broken stone residues, the second motor 634 drives the worm 633, the worm gear 632 and the threaded rod 631 to realize the lifting of the first motor 5, and the first motor 5 drives the mounting column 3 to lift so as to place the bottom cutter 43 at the bottom of the drilling hole 10; the broken stone residues are mixed into slurry through the cooperation of the water injection pipe 21, the slurry pumping pipe 23, the water inlet pump 22, the water outlet pump 24 and the crushing device and pumped out, so that dredging work of the drill hole 10 is finally realized, and the cleaning effect is good.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. A water-saving bored concrete pile dredging device which characterized in that: the device comprises a mounting plate (11), wherein a through hole (12) is formed in the mounting plate (11) in a penetrating manner, and a crushing device for crushing broken stone residues and a cleaning mechanism (2) for cleaning the broken stone residues out of a drilling hole (10) are arranged on the mounting plate (11);

the crushing device comprises a mounting column (3) penetrating through the through hole (12), a plurality of cutter groups (4) are arranged on the mounting column (3) along the axial direction of the mounting column, each cutter group (4) comprises a cutter rest (41), each cutter rest (41) and the mounting column (3) are arranged at an included angle, and a side cutter (42) for cleaning the side wall of the drill hole (10) and a bottom cutter (43) for crushing broken stones at the bottom of the drill hole (10) are fixedly connected to the cutter rest (41); the crushing device further comprises a first motor (5) for driving the mounting column (3) to rotate around the axial direction of the mounting column and a lifting driving mechanism (6) for driving the mounting column (3) to move along the axial direction of the mounting column.

2. A water-saving bored pile dredging apparatus according to claim 1, wherein: the lifting driving mechanism (6) comprises a support plate (61) and sliding rails (621) fixedly connected to the mounting plate (11) and respectively positioned at two opposite sides of the through hole (12), the length direction of each sliding rail (621) is perpendicular to the plate surface of the mounting plate (11), the support plate (61) is connected to the mounting plate (11) in a sliding manner through the sliding rails (621), the first motor (5) is arranged on the support plate (61), and the output end of the first motor (5) penetrates through the support plate (61) and is fixedly connected with the mounting column (3); the mounting plate (11) is also provided with a driving assembly (63) for driving the support plate (61) to slide along the sliding rail (621).

3. A water-saving bored pile dredging apparatus according to claim 2, wherein: the driving assembly (63) comprises two threaded rods (631), the two threaded rods (631) are fixedly connected to the support plate (61) respectively and close to the end part of the sliding rail (621) driven by one end, and the axial direction of the threaded rods (631) is parallel to the moving direction of the support plate (61); the driving assembly (63) further comprises worm gears (632) which are rotatably arranged on the sliding rails (621), the threaded rods (631) are in threaded connection with the centers of the worm gears (632) and penetrate through the worm gears (632), the sliding rails (621) are rotatably provided with worm gears (633) which are in meshed connection with the two worm gears (632), and the sliding rails (621) are further provided with second motors (634) for driving the worm gears (633) to rotate; the threaded rod (631) is provided with a guide structure for limiting the rotation of the threaded rod (631) along with the rotation of the worm wheel (632).

4. A water-saving bored pile dredging apparatus according to claim 3, wherein: the guide structure comprises a guide block (635) fixedly connected to the sliding rail (621) and a guide groove (636) formed in the threaded rod (631), the guide block (635) is in sliding fit with the guide groove (636), the guide groove (636) is formed in the radial direction of the threaded rod (631), and the length direction of the guide groove (636) is parallel to the axial direction of the threaded rod (631).

5. A water-saving bored pile dredging apparatus according to any one of claims 1-4, wherein: the tool rest (41) penetrates through the mounting column (3), and a locking piece used for locking the tool rest (41) to the mounting column (3) is further arranged on the mounting column (3).

6. A water-saving bored pile dredging apparatus according to claim 5, wherein: an elongated slot (44) along the length direction of the tool rest (41) is formed in one side of the tool rest (41), the locking piece is a locking bolt (45), and the locking bolt (45) passes through one side of the mounting column (3) in a threaded manner and abuts against the tool rest (41) at the elongated slot (44).

7. A water-saving bored pile dredging apparatus according to any one of claims 1-4, wherein: the cleaning mechanism (2) comprises a water injection pipe (21) and a pulp pumping pipe (23) which are communicated with the perforation (12), a water inlet pump (22) arranged on the water injection pipe (21) and a water outlet pump (24) arranged on the pulp pumping pipe (23).

8. A water-saving bored pile dredging apparatus according to any one of claims 1-4, wherein: a plurality of mounting holes (13) are formed in the mounting plate (11) in a penetrating mode.

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