CN214035543U

CN214035543U - Hole forming device capable of continuously working and removing old pile

Info

Publication number: CN214035543U
Application number: CN202023166164.1U
Authority: CN
Inventors: 张问科; 刘军潇; 丰江; 李龙; 孙建雄
Original assignee: Zhongdi Junhao Hi Tech Co ltd
Current assignee: Zhongdi Junhao Hi Tech Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-08-24
Anticipated expiration: 2030-12-24

Abstract

The utility model discloses a hole forming device capable of continuously working and removing old piles, which comprises a drill rod and a drill bit body, wherein the drill bit body is a step-shaped rotator with the outer diameter gradually decreasing from top to bottom; three slag discharging grooves are penetrated on the outer step surface of the drill body, a row of cutting teeth is arranged on the soil facing surface of each slag discharging groove, and each slag discharging groove forms a slag discharging port on the top surface of the drill body; the drill bit body is sleeved with a mounting sleeve, a top end plate of the mounting sleeve is welded with the top surface of the drill bit body, and slag discharge through holes which correspond to the slag discharge openings one by one are communicated with the top end plate of the mounting sleeve; a guide sleeve is externally screwed outside the mounting sleeve, and a plurality of teeth are arranged on the lower edge of the guide sleeve; the back soil surface of each slag discharge notch is provided with a slurry nozzle which is communicated with a slurry lower pipe through a slurry branch pipe. The hole forming device can thoroughly destroy waste cast-in-place piles with unlimited length, and is low in noise and low in use cost.

Description

Hole forming device capable of continuously working and removing old pile

Technical Field

The utility model relates to a building foundation construction technical field specifically says a pore-forming device of old stake of abolishing of sustainable work, and more direct white concrete says, is exactly a drill bit that is used for abolishing old bored concrete pile of sustainable work.

Background

In municipal construction, it is often necessary to demolish a short and old building and then perform construction of a pile foundation or a foundation pit on the old foundation. However, since the old concrete cast-in-place pile remaining underground may hinder the subsequent construction, the old concrete cast-in-place pile must be removed.

The conventional method for removing the waste cast-in-place pile in the prior art comprises the steps of digging up covering soil, leaking out the pile position, covering the top of the waste pile with a steel wire rope, and lifting by using a crane. However, because the early construction technology level is limited, the strength of the waste pile body of the old community is often low, and the old community is corroded by underground water for a long time, so that the pile body is easily broken in the pulling process, and the waste pile cannot be thoroughly removed. Certainly, the concrete crusher is also adopted to remove crushed waste piles, but the equipment can only clean shallow pile bodies, the position with the larger depth of the pile bodies cannot be acted, in the crushing process, the power part of the crusher is located outside the pile holes, larger noise can be generated, and the risk of disturbing residents exists. Certainly, in the prior art, the underground waste pipe piles can be pulled out by adopting a pile pulling machine with a pile pulling sleeve, but the length of the pile pulling sleeve of the pile pulling machine is limited, generally not more than 20 meters, so that the pipe piles within the depth of 20 meters can be pulled out, and the length of the pile pulling sleeve of the pile pulling machine exceeds 20 meters, so that the existing pile pulling equipment cannot work; moreover, for a construction unit, it is not a little cost to be equipped with a set of pile pulling equipment specially, if purchase, the utilization rate is low and is not cost-effective, if rent, the rent is high, and the expense of equipment transfer must be borne, so that the cost is not cost-effective, and the time and labor are wasted and the construction period is delayed easily.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a can thoroughly destroy the old and useless bored concrete pile of unlimited length, the pore-forming device of the old pile of destruction of sustainable work that the noise is little, use cost is low again.

The technical solution of the utility model is to provide a hole forming device for removing old piles which can continuously work, comprising a drill rod and a drill body, wherein the drill body is a step-shaped rotator with the outer diameter gradually decreasing from top to bottom; three slag discharging grooves are penetrated on the outer step surface of the drill body, a row of cutting teeth is arranged on the soil facing surface of each slag discharging groove, and each slag discharging groove forms a slag discharging port on the top surface of the drill body; the drill bit body is sleeved with a mounting sleeve, a shaft sleeve for connecting a drill rod is arranged on a top end plate of the mounting sleeve, the top end plate of the mounting sleeve is welded with the top surface of the drill bit body, and slag discharge through holes corresponding to slag discharge ports one to one are formed in the top end plate of the mounting sleeve; a guide sleeve is externally screwed outside the mounting sleeve, the lower end of the guide sleeve is lower than the drill bit body, and a plurality of teeth are arranged on the lower edge of the guide sleeve; the drilling rod is internally provided with a slurry upper pipe, the axis of the drill bit body is provided with a slurry lower pipe butted with the slurry upper pipe, the back soil surface of each slag discharge notch is provided with a slurry nozzle, and the slurry nozzles are communicated with the slurry lower pipe through slurry branch pipes.

After the structure more than adopting, the utility model discloses sustainable work's the pore-forming device who abolishes old stake has following advantage:

the working process of the drill bit is that after the drill bit is connected with a drill rod, the drill bit is driven to drill downwards by a drilling machine, the guide sleeve firstly drills downwards in one step and firstly cuts the pile body and the soil body, so that the drill bit is ensured to drill downwards vertically, and the lower end of the guide sleeve is provided with the tooth teeth which have stronger grinding and crushing energy efficiency, so that if the bottom of some waste piles has the rotary-spraying enlarged head, the expanded head protruding out of the waste piles can be ground; the drill bit in the guide sleeve lags behind the teeth of the gear teeth to perform follow-up crushing on the pile body separated from the soil body, and the pile body separated from the soil body is subjected to stress release, so that the pile body is easy to crush; when the drill bit drills downwards, the slurry is finally sprayed out from a slurry nozzle of the back soil surface of the slag discharging notch through a slurry upper pipe of the drill rod and a slurry lower pipe of the drill bit body and is sprayed to each stepped sharp tooth and cutting tooth of the soil facing surface of the slag discharging notch, the drilling teeth in the working process are effectively cooled, the drill bit is cooled in time, the drill bit can continuously work for a long time, the slag carrying efficiency of the sprayed slurry can be improved under the action of pumping pressure, and the slag discharging efficiency of the drill bit is improved.

In conclusion, the stepped sharp teeth and the cutting teeth of the drill bit are uniformly distributed, extend upwards along the soil facing surface of the slag discharge notch, and are reasonably arranged, the crushing effect is good, the pile removing speed is high, the efficiency is high, and the three slag discharge notches which are straight up and down ensure smooth and rapid slag discharge, so that the crushing and pile removing efficiency is further enhanced; moreover, the slurry is sprayed from the back soil surface to the soil-facing surface, so that the temperature is reduced in time, the sustainable work is ensured, and the slag discharging efficiency is greatly improved; the drill bit can drill down to different depths as required, so that the defect that the pile pulling depth of the pile pulling sleeve type pile extractor in the prior art is not more than 20 meters is overcome; moreover, the drill bit is integrated with the drilling machine and the drill rod, so that special pile pulling equipment does not need to be additionally arranged, the holding cost, the leasing cost and the transition cost of the pile pulling equipment are reduced, the drill bit can be taken at any time, the special pile pulling equipment does not need to be waited for transition like the prior art, and the construction period is prevented from being delayed; moreover, the guide sleeve with the gear teeth drills downwards in one step to separate the pile body and the soil body, so that the follow-up crushing of the drill bit is facilitated, and the vertical drilling of the drill bit is guaranteed; finally, the equipment is driven by the power head of the pile driver, has low noise and accords with the environmental protection concept.

Preferably, the slurry nozzles on the back soil surface of each slag discharge notch are three, namely an upper slurry nozzle, a middle slurry nozzle and a lower slurry nozzle, and the three slurry nozzles are respectively communicated with a lower slurry pipe through three slurry branch pipes; therefore, the slurry on the back soil surface of each slag discharging notch is uniformly sprayed from the upper nozzle, the middle nozzle and the lower nozzle, and is uniformly cooled for each stepped sharp tooth and cutting tooth on the soil facing surface, so that the cooling effect is further improved.

Preferably, the earth-facing surface of each slag discharging notch is in threaded connection with a saw-tooth scraper blade covering each sharp tooth of the earth-facing surface, and a cutting tooth of the earth-facing surface of each slag discharging notch is also welded on the saw-tooth scraper blade; like this, spiro union zigzag scraper has consolidated and protected each sharp tooth of step shape of face of meeting the earth, ensures its intensity and hardness, and then obtains stronger efficiency of creeping into, and in case wearing and tearing of above-mentioned scraper, the dismantlement bolt just can conveniently be changed, and on the same reason, the pick welding also does benefit to the nimble change after wearing and tearing on the scraper.

Preferably, each slag discharge notch groove is provided with a plurality of saw-tooth scraper blades on the soil facing surface, and each saw-tooth scraper blade covers two sharp teeth of the soil facing surface; like this, can the serious scraper blade of wearing and tearing and pick of targeted change, avoid still can use scraper blade and pick to be changed in advance, further reduced use cost and consume, economic nature is good.

The connecting structure of the guide sleeve and the mounting sleeve is preferably as follows: the inner wall of the guide sleeve is provided with a vertical convex strip, the lower edge of the mounting sleeve is provided with a limiting notch corresponding to the convex strip, and the convex strip corresponding to the guide sleeve is clamped by the limiting notch of the mounting sleeve; the guide sleeve is provided with an outer hole, the mounting sleeve is provided with an inner hole corresponding to the outer hole, and the guide sleeve and the mounting sleeve are fixed through bolts penetrating through the inner hole and the outer hole; like this for butt joint process convenient and fast accuracy between them, be about to the vertical sand grip registrate of guide sleeve in installation sleeve's spacing breach, just can realize fast that guide sleeve outer orifice aligns with the installation sleeve hole, the spiro union of being convenient for, moreover, with the built-in protection of the joint structure of above-mentioned sand grip and breach inside guide sleeve, can effectively reduce the wearing and tearing of joint part, prolong its life.

Drawings

Fig. 1 is a schematic structural diagram of a drill of the pore-forming device of the present invention.

Fig. 2 is a schematic view of the structure of fig. 1 after being deflected by a certain angle.

Fig. 3 is a schematic view of the semi-sectional structure of the guiding sleeve of the hole forming device of the present invention.

Fig. 4 is a schematic view of fig. 1 with the guide sleeve removed.

Fig. 5 is a schematic view of fig. 4 with the mounting sleeve further removed.

Fig. 6 is a schematic view of the structure of fig. 5 after being deflected by a certain angle.

Fig. 7 is a schematic structural view of a slurry pipeline in a drill bit of the pore-forming device.

The drill bit comprises a drill bit body 1, a slag discharging notch 2, a slag receiving face 2.1, an earth facing face 2.2, an earth backing face 3, cutting teeth 4, a slag discharging port 5, an installation sleeve 6, a shaft sleeve 7, a slag discharging through hole 8, a guide sleeve 9, tooth teeth 10, a slurry lower pipe 11, a slurry nozzle 12, a slurry branch pipe 13, a sawtooth-shaped scraper blade 14, convex strips 15, limiting notches 16, an outer hole 17, an inner hole 18, bolts 19 and a flange plate.

Detailed Description

As shown in fig. 1-7, the utility model discloses sustainable work's broken pore-forming device of old stake, it includes drilling rod and drill bit body 1.

The drill bit body 1 is a step-shaped rotating body with the outer diameter gradually decreasing from top to bottom; in other words, the body portion of the drill bit may be understood as a stepped member that is rotated about an axis. Three slag discharging notches 2 are arranged on the outer step surface of the drill bit body 1 in a penetrating manner along the axis direction, and each slag discharging notch 2 forms a slag discharging opening 4 on the top surface of the drill bit body 1; namely, three slag outlets 4 are formed on the top surface of the drill bit body 1.

The earth-facing surface 2.1 of each slag discharging notch 2 is provided with a row of cutting teeth 3, specifically, the earth-facing surface 2.1 of each slag discharging notch 2 is screwed with a saw-tooth scraper blade 13 covering each sharp tooth of the earth-facing surface 2.1, and the cutting teeth 3 of the earth-facing surface 2.1 of each slag discharging notch 2 are also welded on the saw-tooth scraper blade 13. More specifically, the serrated scraper blade 13 of each slag discharge notch 2 on the soil-facing surface 2.1 is not integrally formed but divided into a plurality of pieces, for example, in this embodiment, three serrated scraper blades 13 are screwed to each slag discharge notch 2 on the soil-facing surface 2.1, each serrated scraper blade 13 is fixed to the soil-facing surface 2.1 by an upper screw and a lower screw, and each serrated scraper blade 13 covers two sharp teeth of the soil-facing surface 2.1.

The drill bit body 1 is sleeved with a mounting sleeve 5, the mounting sleeve 5 comprises a top end plate and a side cylinder wall which are integrated, the top end plate is provided with a shaft sleeve 6 for connecting a drill rod, the top end plate of the mounting sleeve 5 is welded with the top surface of the drill bit body 1, and slag discharge through holes 7 which correspond to the slag discharge openings 4 one by one are communicated with the top end plate of the mounting sleeve 5; namely, the top end plate is penetrated with three deslagging through holes 7. A guide sleeve 8 is externally screwed on the mounting sleeve 5, specifically, four vertical convex strips 14 which are uniformly distributed along the circumferential direction are arranged on the inner wall of the guide sleeve 8, four limiting notches 15 corresponding to the convex strips 14 are arranged on the lower edge of the side wall of the mounting sleeve 5, and the four limiting notches 15 of the mounting sleeve 5 clamp the four convex strips 14 corresponding to the guide sleeve 8; the guide sleeve 8 is provided with four outer holes 16, the side wall of the mounting sleeve 5 is provided with four inner holes 17 corresponding to the outer holes 16, and the guide sleeve 8 and the mounting sleeve 5 are fixed through bolts 18 penetrating through the inner holes 17 and the outer holes 16.

The lower end of the guide sleeve 8 is lower than the drill bit body 1, and a plurality of teeth 9 are arranged on the lower edge of the guide sleeve 8.

The drilling rod of this application is conventional structure, so do not show in the drawing, and the drilling rod of this application is fixed through square axle sleeve 6 with drill bit body 1, and is equipped with a mud top tube in the drilling rod, is equipped with a mud lower tube 10 with the butt joint of mud top tube on the axis of drill bit body 1, and foretell mud top tube and mud lower tube 10 dock through ring flange 19.

The back soil surface 2.2 of each slag discharging notch 2 is provided with an upper slurry nozzle 11, a middle slurry nozzle and a lower slurry nozzle 11, and the three slurry nozzles 11 are communicated with a lower slurry pipe 10 through three slurry branch pipes 12. In other words, the mud lower pipe 10 of the present application is in communication with nine mud ports 11 of three subsoil facing surfaces 2.2 via nine mud manifolds 12. Of course, the nine slurry branch pipes 12 are all located in the drill bit body 1.

The utility model discloses a pore-forming device, more exactly say, the utility model discloses a drill bit is installed on the abrasive disc drilling machine through the drilling rod, abrasive disc drilling machine rotary drill bit, the broken old and useless bored concrete pile in the soil body that falls, and mud top tube in the drilling rod from the abrasive disc drilling machine, enter into the mud low tube 10 of drill bit body 1, divide pipe 12 to spout from each mud spout 11 through corresponding mud again, mud carries the drilling of sediment appearance discharge, and in time cool down to each sharp tooth of step shape of drill bit body 1 and pick 3 for this pore-forming device sustainable work.

Claims

1. The utility model provides a pore-forming device of old stake of abolishing of sustainable work which characterized in that: the drill bit comprises a drill rod and a drill bit body (1), wherein the drill bit body (1) is a step-shaped rotating body with the outer diameter gradually decreasing from top to bottom; three slag discharge notches (2) are penetrated through the outer step surface of the drill body (1), a row of cutting teeth (3) is arranged on the soil facing surface (2.1) of each slag discharge notch (2), and each slag discharge notch (2) forms a slag discharge opening (4) on the top surface of the drill body (1); the drill bit body (1) is sleeved with a mounting sleeve (5), a shaft sleeve (6) for connecting a drill rod is arranged on a top end plate of the mounting sleeve (5), the top end plate of the mounting sleeve (5) is welded with the top surface of the drill bit body (1), and slag discharge through holes (7) which correspond to the slag discharge ports (4) one by one are communicated with the top end plate of the mounting sleeve (5); a guide sleeve (8) is externally screwed on the mounting sleeve (5), the lower end of the guide sleeve (8) is lower than the drill bit body (1), and a plurality of teeth (9) are arranged on the lower edge of the guide sleeve (8); a slurry upper pipe is arranged in the drill rod, a slurry lower pipe (10) butted with the slurry upper pipe is arranged on the axis of the drill bit body (1), a slurry nozzle (11) is arranged on the back soil surface (2.2) of each slag discharging notch (2), and the slurry nozzle (11) is communicated with the slurry lower pipe (10) through a slurry branch pipe (12).

2. A continuously operable old pile demolishing hole forming apparatus as claimed in claim 1, wherein: the slurry nozzles (11) on the back soil surface (2.2) of each slag discharge notch (2) are three, namely an upper slurry nozzle, a middle slurry nozzle and a lower slurry nozzle, and the three slurry nozzles (11) are respectively communicated with a lower slurry pipe (10) through three slurry branch pipes (12).

3. A continuously operable old pile demolishing hole forming apparatus as claimed in claim 1, wherein: the earth facing surface (2.1) of each slag discharging notch (2) is in threaded connection with a saw-tooth-shaped scraper blade (13) which covers all sharp teeth of the earth facing surface (2.1), and the cutting teeth (3) of the earth facing surface (2.1) of each slag discharging notch (2) are also welded on the saw-tooth-shaped scraper blade (13).

4. A continuously operable old pile demolishing hole forming apparatus as claimed in claim 3, wherein: each slag discharge notch (2) is provided with a plurality of saw-tooth scraper blades (13) facing the soil surface (2.1), and each saw-tooth scraper blade (13) covers two sharp teeth of the soil surface (2.1).

5. A continuously operable old pile demolishing hole forming apparatus as claimed in claim 1, wherein: a vertical convex strip (14) is arranged on the inner wall of the guide sleeve (8), a limiting notch (15) corresponding to the convex strip (14) is arranged on the lower edge of the mounting sleeve (5), and the convex strip (14) corresponding to the guide sleeve (8) is clamped by the limiting notch (15) of the mounting sleeve (5); the guide sleeve (8) is provided with an outer hole (16), the mounting sleeve (5) is provided with an inner hole (17) corresponding to the outer hole (16), and the guide sleeve (8) and the mounting sleeve (5) are fixed through a bolt (18) penetrating through the inner hole (17) and the outer hole (16).