CN111945728A

CN111945728A - Planting pile construction equipment

Info

Publication number: CN111945728A
Application number: CN202010967796.3A
Authority: CN
Inventors: 宋伟民; 刘全林; 宋雪清; 盛晓幸
Original assignee: Shanghai Qiangjin Foundation Engineering Co Ltd
Current assignee: Shanghai Qiangjin Foundation Engineering Co Ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2020-11-17

Abstract

The invention provides a construction device for a planting pile, which comprises a pile frame, wherein a drill rod is arranged on the pile frame, and a power device is arranged at the top of the drill rod; the drill rod drives the stirring shaft to rotate to cut the stratum, and the outer sleeve and the stirring cage are fixed together and do not rotate. According to the pile planting construction equipment, the stirring cage is arranged, so that the front end of the drill rod is prevented from shaking, and vertical drilling in the drilling process is guaranteed. The fixed blades and the stirring blades interact in the range of the stirring cage, the cement slurry is fully stirred, and the pile forming effect is good.

Description

Planting pile construction equipment

Technical Field

The invention relates to the technical field of civil engineering, in particular to a device for foundation construction.

Background

Mixing pile construction machinery, in the work progress, usually adopt the mixing pile machine to carry out the construction, be provided with the drilling rod on the mixing pile machine, be provided with stirring vane on the drilling rod, stirring vane rotates the cutting soil layer and mixes cement thick liquid and original state soil stirring and forms flow state cement soil.

The cement soil concretion can be generated in the rotating process of the stirring blades, the solidified cement soil is attached to the stirring blades, the stirring blades lose the stirring function, the quality of the formed stirring pile is unqualified, the uniformity of the pile body is poor, and the construction efficiency is low. When stirring vane was at the stickness soil layer construction promptly, the clay easily glued on stirring vane and rotates together with the blade, influences the stake stirring effect.

The traditional pile-planting drill rod is low in rigidity, and the perpendicularity and cylindricity of a formed pile are poor, so that the pile forming effect is influenced on one hand, and cement slurry is wasted on the other hand.

Therefore, the need of designing a novel mixing pile construction device is very urgent.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the problems in the prior art and provide a construction device for a planting pile.

In order to solve the problems, the technical scheme of the invention is as follows:

the utility model provides a planting pile construction equipment, includes the pile frame, is provided with the drilling rod on the pile frame, and the drilling rod top is provided with power device, characterized by, and drilling rod lower part cover has the stirring cage of fretwork, is provided with fixed blade in the stirring cage, and the drilling rod lower part is equipped with stirring vane.

The fixed blades and the stirring blades are arranged in a staggered mode.

The stirring cage is fixed and does not rotate, and the stirring cage is lifted along with the drill rod when the drill rod is lifted.

An outer sleeve is arranged on the drill rod and connected with the pile frame through a guide sliding block.

The upper end of the outer casing is connected with the power device shell, and the lower end of the outer casing is connected with the stirring cage.

The section of the sleeve is in a cross shape.

The cross section of the sleeve is hexagonal.

The section of the sleeve is quadrilateral

The section of the sleeve is round

Four channel steel is arranged at the front, the rear, the left side and the right side of the sleeve, the channel steel with an outward opening is arranged at the left side and the right side, and the channel steel with an inward opening is arranged at the front side and the rear side of the sleeve.

The guide slide block is connected with the channel steel with the outward opening from the left side and the right side of the sleeve

The stirring cage is a cylindrical grid-shaped structure, the upper part of the stirring cage is provided with a closing-in, and the closing-in is connected with the bottom end of the sleeve.

The closing-in is provided with a butt flange, the bottom end of the sleeve is provided with the butt flange, and the stirring cage is fixed with the sleeve through a bolt and the butt flange.

Be provided with the axle sleeve that is used for stabilizing the drilling rod in the stirring cage, the axle sleeve is fixed at the stirring cage inboard, and the drilling rod passes in the middle of the axle sleeve, and the drilling rod rotates at axle sleeve limit range.

Two shaft sleeves for stabilizing the drill rod are respectively positioned at the lower part and the upper part in the stirring cage.

The bottom end of the drill rod is provided with a lower guniting port and an upper guniting port positioned above the lower guniting port.

And a protection device for protecting the guniting port is arranged beside the lower guniting port and the upper guniting port.

The drill bit is arranged at the lower end of the drill rod.

And a bottom expanding device is arranged at the rear part of the drill bit at the lower end of the drill rod.

The bottom expanding device comprises an axial telescopic rod, an umbrella rod capable of opening and closing is arranged on the telescopic rod, the umbrella rod is connected with blades for expanding the bottom, and teeth are arranged on the blades.

The telescopic link is hydraulic telescopic link, and hydraulic telescopic link passes through hydraulic line and connects the hydraulic pump, and hydraulic line sets up inside the drilling rod.

Has the advantages that: according to the pile planting construction equipment, the stirring cage is arranged, so that the front end of the drill rod is prevented from shaking, and vertical drilling in the drilling process is guaranteed. The fixed blades and the stirring blades interact in the range of the stirring cage, the cement slurry is fully stirred, and the pile forming effect is good. The middle part of the drill rod is provided with the guide sliding block, so that the integral rigidity of the drill rod is improved, and the pile forming precision of the mixing pile is effectively ensured.

The stirring cage is provided with the fixed blades, the fixed blades and the stirring blades move relatively, and when the stirring blades sweep over the fixed blades, clay adhered to the stirring blades is cleaned, so that the pile-forming stirring effect is improved.

A drill rod sleeve is added, and the sleeve is provided with channel steel, so that the sectional area of the drill rod is increased, the bending resistance interface coefficient is increased, and the rigidity of the drill rod is improved; the guide rail is arranged on the sleeve, the movable guide device is additionally arranged to connect the sleeve with the upright post guide rail, and the rigidity constraint point is increased, so that the rigidity of the drill rod is improved.

The bottom of the drill rod is provided with the bottom expanding device, so that the bottom expanding can be carried out during construction, and the bearing capacity of the pile bottom is increased.

Drawings

The invention is described in detail below with reference to the drawings and the detailed description;

fig. 1 is a schematic diagram of an overall structure of intelligent pile foundation construction equipment according to the invention.

Fig. 2 is a schematic view of the assembly of the parts of the drilling tool according to the present invention.

Fig. 3 is a cross-sectional view of a drill rod structure according to the present invention.

Fig. 4 is a schematic structural diagram of the stirring cage and the drill bit according to the invention.

FIG. 5 is a schematic illustration of the disassembled agitator cage of the present invention.

FIG. 6 is a schematic view of the bellout apparatus of the present invention before deployment.

FIG. 7 is a schematic view of the bottom expanding device according to the present invention after being deployed.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

The equipment in the embodiment is single-shaft drilling machine equipment, and is used for cutting and stirring soil at a pile position, mixing the soil with a curing agent to form a cement stirring body, and inserting the cement stirring body into a prefabricated pile body to form a composite pile foundation.

Referring to fig. 1 to 3, the pile planting construction equipment according to the embodiment includes a pile frame 1, on which a drill rod 2 is disposed, the drill rod 2 being used for forming a cement-soil mixing pile; the drill rod 2 is provided with a power head 3, and the power head 3 is internally provided with a motor.

The drill rod 2 is provided with a casing 4, and the drill rod 2 is positioned in the center of the casing. The drill rod 2 rotates, while the casing 4 is fixed against rotation relative to the drill rod 2. The upper end of the sleeve 4 is connected with the shell of the power head. The sleeve pipe middle part sets up slidable direction slider 5, and direction slider 5 hoops in the sleeve pipe 4 outside, and 5 opposite sides of direction slider set up on the leading truck of pile frame 1, and when the sleeve pipe goes up and down, direction slider 5 goes up and down along with. The lower end of the sleeve 4 is connected with a stirring cage 6. Referring to fig. 3, the cross section of the sleeve 4 is cross-shaped, the left side and the right side of the sleeve 4 are provided with channel steel with an outward opening, the front side and the rear side of the sleeve 4 are provided with channel steel with an inward opening, and the guide slider 5 is clamped in the channel steel with the outward opening.

Referring to fig. 4 and 5, the stirring cage 6 is in a hollow cage shape and is sleeved on the lower portion of the drill rod, the drill rod is provided with stirring blades, and the inner side of the stirring cage 6 is correspondingly provided with a fixed blade 61. The fixed blades 61 of the mixing cage and the mixing blades 21 of the drill rod are staggered without interference. During operation, stirring cage and fixed blade do not rotate, and the drilling rod rotates and drives stirring blade and rotate, and under stirring blade and fixed blade's effect, the original state soil and the grout intensive mixing of stirring cage within range.

The stirring cage 6 is a cylindrical grid-shaped structure, a closing-in 62 is arranged at the upper part of the stirring cage, and the closing-in 62 is connected with the bottom end of the sleeve. The mixing cage 6 is fixed together with the sleeve 4 and does not rotate.

In order to facilitate butt joint and disassembly, the closing-in 62 is provided with a butt flange, the bottom end of the sleeve is provided with the butt flange, and the stirring cage is fixed with the sleeve through bolts and the butt flange.

Be provided with the axle sleeve 63 that is used for stabilizing the drilling rod in stirring cage 6, the axle sleeve is fixed at the stirring cage inboard, and the drilling rod passes from the axle sleeve centre, and axle sleeve 63 makes the drilling rod around central rotation, does not rock. Two shaft sleeves for stabilizing the drill rod are respectively positioned at the lower part and the upper part in the stirring cage.

The foremost end of the drill rod is a drill bit 22 which extends out of the boundary of the lower end of the mixing cage.

In the process of drilling down, the sleeve is fixed and does not rotate, the stirring cage does not rotate, only the drill rod rotates, and the verticality of the cement soil pile body in the process of drilling down is effectively guaranteed. The verticality deviation is within 0.5 percent.

The sleeve 4 is formed by four channel steels in a surrounding mode, the sections of the channel steels are concave, and the concave openings face outwards. The sleeve pipe 4 is hooped on one side of the guide sliding block 5, the guide frame 7 is hooped on the other side of the guide sliding block, the guide sliding block 5 is connected to the power head shell through the flexible rope, when the drill rod is lifted completely, the flexible rope lifts the guide sliding block 5 to the middle position of the height of the drill rod, when the drill rod is drilled downwards, the guide sliding block 5 descends along with the flexible rope, when the guide sliding block falls to the position of the protective cylinder at the bottom of the drill rod, the protective cylinder blocks the guide sliding block 5 to continuously fall, and the distance between the guide sliding block and the power. When the power head is lifted to half height, the flexible rope is straightened, and the guide slide block 5 is pulled upwards until the lifting is finished.

The bottom end of the drill rod 2 is provided with a lower guniting port 23 and an upper guniting port 24 positioned above the lower guniting port. The lower guniting port 23 is positioned at the bottommost end, and the upper guniting port 24 is positioned at the upper part of the stirring cage; during the lifting and descending processes of the drill rod, cement slurry sprayed up and down near the stirring cage is fully stirred.

In order to protect the grout spraying opening from being blocked, small blade pieces 25 for protecting the grout spraying opening are arranged beside the lower grout spraying opening and the upper grout spraying opening.

Referring to fig. 6 and 7, a bottom-expanding device 8 is arranged at the rear part of the drill bit at the lower end of the drill rod.

The bottom expanding device 8 comprises an axial telescopic rod 81, an umbrella rod 82 which can be opened and closed is arranged on the telescopic rod, the umbrella rod is connected with blades 83 used for bottom expanding, and teeth 84 are arranged on the blades.

The telescopic rod 81 is a hydraulic telescopic rod, the hydraulic telescopic rod is connected with a hydraulic pump through a hydraulic pipeline, and the hydraulic pipeline is arranged inside the drill rod.

The telescopic rod 81 extends to drive the umbrella rod 82 to expand so as to drive the bottom expanding blades 83 to expand and rotate to expand the bottom; if the bottom expanding is not needed, the telescopic rod 81 retracts to drive the umbrella rod 82 to close, so as to drive the bottom expanding blades to close, and the drill rod is convenient to lift or descend.

The construction process is as follows:

(1) in position

And moving the pile frame to the designated pile position to align the center of the drill bit with the designed pile position.

(2) Preparation of cement paste

And mixing cement paste according to the designed ash amount, pile length and water-cement ratio, and sieving the mixed cement paste to enter a collecting hopper.

(3) Stirred and sunk

After the pile is positioned, the motor is started, the hoisting steel wire rope is released, the mixer is enabled to cut soil and sink along the upright post guide frame while stirring, and cement slurry is sprayed into the lower slurry spraying port, so that a small amount of water can be sprayed properly when drilling is difficult.

(4) Guniting, stirring and lifting

After the drill bit sinks to the design degree of depth, the drill bit is lifted while being stirred in a rotating mode, cement slurry is sprayed into the upper slurry spraying opening, the drill bit is lifted strictly according to the required lifting speed during lifting, and the stirrer sprays specified cement slurry.

(5) Repeated agitation sinking and lifting

And (5) re-stirring according to design requirements, and lifting the drill rod after the re-stirring is finished.

(6) Cleaning of

And (3) injecting a proper amount of clear water into the collection hopper, starting a mortar pump, and cleaning residual cement paste in all pipelines until the cement paste is basically clean. And the soft soil adhered on the stirring head is removed.

In the steps (3), (4) and (5), clay adhered to the stirring blades is cleaned by using a stirring cage 6 arranged on the drill rod, the fixed blades and the stirring blades interact, and the cement slurry is fully stirred to form the stirring pile.

In the step (4), after sinking to the designed depth, the fixed spraying can be carried out, the bottom expanding device 8 is adopted in the fixed spraying process, an expanded head is formed at the bottom of the stirring pile, and the bearing capacity of the pile bottom is increased.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited by the foregoing examples, which are provided to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is also intended to be covered by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a planting pile construction equipment, includes the pile frame, is provided with the drilling rod on the pile frame, and the drilling rod top is provided with power device, characterized by, and drilling rod lower part cover has the stirring cage of fretwork, is provided with fixed blade in the stirring cage, and the drilling rod lower part is equipped with stirring vane.

2. The apparatus for constructing a planting pile according to claim 1, wherein the fixing blades and the stirring blades are arranged in a staggered manner.

3. The apparatus of claim 1, wherein the cage is fixed and does not rotate, and the cage is raised and lowered while the drill rod is raised and lowered.

4. A plant pile construction device according to claim 1, characterised in that the drill rod is provided with an outer sleeve, the outer sleeve being connected to the pile frame by a guide slide.

5. A plant pile construction equipment according to claim 4, characterised in that the upper end of the outer sleeve is connected to the power unit housing and the lower end of the outer sleeve is connected to the mixing cage.

6. A plant pile construction apparatus according to claim 4, characterised in that the sleeve is cruciform in cross-section.

7. A plant pile construction apparatus according to claim 4, characterised in that the sleeve is hexagonal in cross-section.

8. A plant pile construction apparatus according to claim 4, characterised in that the sleeve is quadrilateral in cross-section.

9. A plant pile construction apparatus according to claim 4, characterised in that the sleeve is circular in cross-section.

10. The apparatus of claim 6, wherein four channels are provided around the sleeve, the channels being open outwardly on the left and right sides, and the channels being open inwardly on the front and rear sides.

11. The apparatus for constructing a planting pile according to claim 10, wherein the guide blocks are connected to the channel section outwardly opened from the left and right sides of the sleeve.

12. The apparatus for constructing a planting pile according to claim 1, wherein the stirring cage is a cylindrical grid structure, and the upper part of the stirring cage is provided with a closed end which is connected with the bottom end of the sleeve.

13. A pile construction apparatus according to claim 12, characterised in that the closure is provided with a docking flange and the bottom end of the sleeve is provided with a docking flange, the mixing cage being secured to the sleeve by means of bolts and the docking flange.

14. A pile construction device according to claim 1, characterised in that a sleeve is provided in the mixing cage for stabilising the drill rod, the sleeve being secured to the inside of the mixing cage, the drill rod passing through the sleeve, the drill rod being rotatable within the confines of the sleeve.

15. A pile construction apparatus according to claim 14, characterised in that there are two sleeves for stabilizing the drill rod, one at each of the lower and upper portions of the mixing cage.

16. The apparatus for constructing a planting pile according to claim 1, wherein the lower end of the drill rod is provided with a lower grout port, and an upper grout port is provided above the lower grout port.

17. The apparatus for constructing a planting pile according to claim 16, wherein a protector for protecting the grout injection port is provided beside the lower grout injection port and the upper grout injection port.

18. A plant pile construction equipment according to claim 1, characterised in that the drill rod is provided with a drill bit at its lower end.

19. A plant pile construction equipment according to claim 18, characterised in that the lower end of the drill rod is provided with a bottom-enlarging device at the rear of the drill bit.

20. A plant pile construction apparatus according to claim 19, characterised in that the base-expanding means comprises an axially extending telescopic rod, the telescopic rod being provided with an umbrella stem which can be opened and closed, the umbrella stem being connected to blades for base expansion, the blades being provided with teeth.

21. The apparatus of claim 20, wherein the extension rod is a hydraulic extension rod connected to a hydraulic pump through a hydraulic line disposed inside the drill rod.