CN216043538U - Novel bored concrete pile pore-forming device - Google Patents
Novel bored concrete pile pore-forming device Download PDFInfo
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- CN216043538U CN216043538U CN202121904886.4U CN202121904886U CN216043538U CN 216043538 U CN216043538 U CN 216043538U CN 202121904886 U CN202121904886 U CN 202121904886U CN 216043538 U CN216043538 U CN 216043538U
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Abstract
The utility model relates to a novel bored pile pore-forming device, which comprises a drill rod, a drill bit shaft, a cylindrical pore-forming drill bit, a combined cutter, an equipment box body and a slurry discharge device, wherein the drill bit shaft is hollow and connected with the lower end of the drill rod, a slurry outlet is arranged on the drill rod, the equipment box body is fixedly arranged at the lower end of the drill rod through a connecting bearing, the cylindrical hole-forming drill bit is arranged at the bottom of the equipment box body, the lower end of a drill bit shaft passes through the equipment box body and is inserted at the center of the cylindrical hole-forming drill bit, the combined cutter is arranged in the cylindrical hole-forming drill bit, the slurry discharge device comprises a slurry centrifugal pump arranged in the equipment box body, a slurry suction inlet of the slurry centrifugal pump is connected with a slurry suction pipe, and a slurry discharge outlet of the slurry centrifugal pump is connected with a slurry discharge pipe. Has the advantages that: simple structure, convenient operation, to a great extent has promoted the straightness that hangs down of drilling.
Description
Technical Field
The utility model belongs to the technical field of building construction, and particularly relates to a novel hole forming device for a cast-in-situ bored pile.
Background
The cast-in-situ bored pile has the advantages of high bearing capacity, strong adaptability, low cost and the like, and is widely applied to engineering construction such as traffic, water conservancy, buildings and the like. Through application practices of a large number of projects, design theories and construction technologies of cast-in-situ bored piles are continuously developed and improved. Along with the continuous acceleration of the urbanization construction process, the phenomenon of the large and medium-sized cities on the earth-inch gold is increasingly prominent, particularly, the center urban area is newly built and the engineering projects are expanded, the distance from the central urban area to the residential area is closer and closer, the construction at night is inevitable under the influence of the engineering progress and the key engineering procedures, and surrounding residents can not disturb the construction noise.
For the construction of the cast-in-situ bored pile, the control of the verticality of the drill rod in the pile foundation pore-forming process has great significance for reducing construction noise, and particularly has remarkable effects on overcoming pore-forming collapse holes, hole shrinkage, pile hole deflection and incapability of meeting the design bearing layer requirement of a pile end, and the pile foundation verticality control quality directly influences the pile body quality or even leads to the reduction of the pile foundation bearing capacity. The construction quality acceptance criteria of the foundation engineering of the building foundation (GB50202-2002) Table 5.1.4 clearly requires the plane position and the allowable deviation of the verticality of the cast-in-place pile, wherein the allowable deviation of the diameter of the mud retaining wall drilled pile is +/-50 mm, and the allowable deviation of the verticality is less than 1 percent. However, in the actual construction process, due to the fact that the types of pile foundation construction equipment are different, perpendicularity control effects are different, factors influencing the perpendicularity of the drilled hole are many, and factors in the existing construction preparation stage further include factors in the construction stage. Influence factors in the construction preparation stage can be calibrated through pretreatment work such as personnel, machinery, materials, processes and sites in the early stage to reduce deviation, but the deviation of the perpendicularity of the pile hole is inevitable due to the influence of factors such as complexity of geological conditions of an engineering site and nonstandard operation of constructors in the construction stage, so that the method is particularly important for the perpendicularity of the pile foundation through improvement of drilling equipment, standard manual operation behaviors and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems and provides a novel bored pile hole forming device which is high in construction efficiency and high in hole forming speed, and particularly can greatly improve the hole forming verticality precision and reduce construction noise.
The technical scheme is that the novel bored pile hole forming device is characterized by comprising a drill rod, a drill bit shaft, a cylindrical hole forming drill bit, a combined cutter, an equipment box body and a slurry discharging device, wherein the drill bit shaft is hollow and is connected to the lower end of the drill rod to output slurry together with the drill rod, a slurry outlet is formed in the drill rod, the equipment box body is fixedly installed at the lower end of the drill rod through a connecting bearing, the cylindrical hole forming drill bit is arranged at the bottom of the equipment box body, the lower end of the drill bit shaft penetrates through the equipment box body and is inserted in the center of the cylindrical hole forming drill bit, the combined cutter is arranged in the cylindrical hole forming drill bit and is fixed at the lower end of the drill bit shaft, the interval distance of 290 plus 310mm is formed between the bottom of the combined cutter and the bottom of the cylindrical hole forming drill bit, and the drill bit shaft is driven to rotate through a driving mechanism, and the cylindrical hole-forming drill bit and the combined cutter inside the cylindrical hole-forming drill bit are driven to rotate together, the slurry discharge device comprises a slurry centrifugal pump arranged in the equipment box, a slurry suction port of the slurry centrifugal pump is connected with a slurry suction pipe, and a slurry discharge port of the slurry centrifugal pump is connected with a slurry discharge pipe.
As a further improvement, the lower end of the cylindrical hole-forming drill bit is in a sawtooth shape, and a cylinder arm of the cylindrical hole-forming drill bit is in a screen shape.
As a further refinement, the bottom of the gang tool to the bottom of the cylindrical bore-forming drill has a spacing distance of 300 mm.
As further improvement, gang tool includes that cross spiral mud churning knife and cross soil layer grind the boring cutter, cross spiral mud churning knife sets up on the cross soil layer grinds the boring cutter, cross soil layer grinds the boring cutter and includes cross knife rest, a plurality of conical cutter head and the oblique tool bit of a plurality of, a plurality of conical cutter head and a plurality of oblique tool bit are in use conical cutter head staggered arrangement as first on the cross knife rest from the extroversion to the equal perpendicular setting downwards.
As a further improvement, the driving mechanism comprises an underwater motor, a gear fixing shaft and five transmission gears, the underwater motor is installed on a top plate of the equipment box body, an output shaft of the underwater motor downwards penetrates through the top plate of the equipment box body and is arranged in the equipment box body, the gear fixing shaft is installed in the equipment box body through a gear shaft fixing bearing and is arranged between the output shaft of the underwater motor and the drill bit shaft, one of the five transmission gears is sleeved on the output shaft of the underwater motor, two of the five transmission gears are sleeved on two ends of the gear fixing shaft, and the other two transmission gears are sleeved on the drill bit shaft; the transmission gear sleeved at the front end of the gear fixing shaft is meshed with the transmission gear sleeved on the output shaft of the underwater motor, and the transmission gear sleeved at the rear end of the gear fixing shaft is meshed with the two gears sleeved on the drill bit shaft to form a transmission mechanism.
As a further improvement, a waterproof gear box is further arranged in the equipment box body to protect the whole transmission mechanism.
As a further improvement, the four corners of the top of the equipment box body are respectively provided with a lifting lug.
Advantageous effects
The beneficial effects are that: the utility model has simple structure and convenient use, improves the verticality of the drilled hole to a great extent, relieves the noise pollution caused by the shaking of the drill rod when passing through the hard soil layer to a great extent, and is particularly suitable for the construction of the drilled pile foundation of the building engineering in the area which is close to a residential area and has high noise control requirement.
Drawings
The utility model is further explained with the embodiment in the following.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view of a-a portion of fig. 1.
Reference numbers in the figures:
1. drill rod 2 and drill bit shaft
3. Cylindrical hole-forming drill bit 4 and equipment box body
5. Slurry discharge device 501 and slurry centrifugal pump
502. Slurry discharge pipe 6 and connecting bearing
7. Driving mechanism 701 and underwater motor
702. Gear fixing shaft 703 and transmission gear
704. Gear shaft fixed bearing 8 and cross spiral mud stirring knife
9. Cross-shaped soil layer grinding drill 901 and cross-shaped tool rest
902. Conical cutter head 903 and inclined cutter head
10. Waterproof gear box 11, lug
Detailed Description
So that the manner in which the above recited features of the present invention can be understood and readily understood, a more particular description of the utility model, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings, wherein:
as shown in figure 1-2, a novel bored pile hole-forming device comprises a drill rod 1, a drill shaft 2, a cylindrical hole-forming drill bit 3, a combined cutter, an equipment box 4 and a slurry discharge device 5, wherein the drill shaft 2 is hollow and is connected to the lower end of the drill rod 1 to output slurry together with the drill rod 1, a slurry outlet is arranged on the drill rod 1, the equipment box 4 is fixedly arranged at the lower end of the drill rod 1 through a connecting bearing 6, the cylindrical hole-forming drill bit 3 is arranged at the bottom of the equipment box 4, the lower end of the drill shaft 2 passes through the equipment box 4 and is inserted at the center of the cylindrical hole-forming drill bit 3, the combined cutter is arranged in the cylindrical hole-forming drill bit 3 and is fixed at the lower end of the drill shaft 2, the interval h from the bottom of the combined cutter to the bottom of the cylindrical hole-forming drill bit 3 is 290 mm and 310mm, the drill bit 2 shaft is driven to rotate by a driving mechanism 7, and drives the cylindrical hole-forming drill bit 3 and the combined cutter therein to rotate together, the slurry discharge device 5 comprises a slurry centrifugal pump 501 arranged in the equipment box 4, a slurry suction port of the slurry centrifugal pump 501 is connected with a slurry suction pipe (not shown in the figure), and a slurry discharge port of the slurry centrifugal pump 501 is connected with a slurry discharge pipe 502. The device disclosed by the utility model is connected with the drill bit shaft 2 through the drill rod 1, and the perpendicularity of the drilled hole is improved to a great extent through the design of a connecting structure for vertically connecting the drill bit shaft 2 to the center of the cylindrical hole-forming drill bit; the soil body collapses when having avoided drilling through the structural design of cylindric pore-forming drill bit 3, still accommodates wherein drilling gang tool, has alleviated the noise pollution that causes because of the drilling rod rocks when passing through hard soil layer to a great extent.
Preferably, the lower end of the cylindrical hole-forming drill 3 is in a sawtooth shape, the cylinder arm of the cylindrical hole-forming drill is in a screen shape,
preferably, the gang tool includes cross spiral mud stirring sword 8 and cross soil layer grinding drill bit 9, and cross spiral mud stirring sword 8 sets up on cross soil layer grinding drill bit 9, and cross soil layer grinding drill bit 9 includes cross knife rest 901, a plurality of conical cutter head 902 and a plurality of oblique tool bit 903, and a plurality of conical cutter head 902 and a plurality of oblique tool bit 903 take conical cutter head 902 to stagger arrangement from outside to inside on cross knife rest 901 to all set up perpendicularly downwards.
Preferably, the distance h from the bottom of the combined cutter to the bottom of the cylindrical hole-forming drill 3 is 300mm, and further, the distance h between the bottom of the cross-shaped soil layer grinding drill 9 and the tooth tip of the serrated lower end of the cylindrical hole-forming drill is 300 mm.
The spacing distance of 300mm is arranged between the bottom 9 of the cross-shaped soil layer grinding drill bit and the bottom of the cylindrical hole-forming drill bit 3, when the drilling depth of the cylindrical hole-forming drill bit exceeds 300mm, the cross-shaped soil layer grinding drill bit 9 starts to grind and cut a soil layer, when the cross-shaped soil layer grinding drill bit 9 rotates, a cylindrical soil body with the height of 300mm is drilled in the soil layer in advance, the cylinder wall of the cylindrical hole-forming drill bit 9 continuously rotates in a circulating mode, the cylinder wall of a cast-in-place pile soil body is continuously in running-in with the cylinder wall of the cylindrical hole-forming drill bit, and coupling effect generated by slurry continuously overflowing from the cylinder wall of the cylindrical hole-forming drill bit is achieved, so that the self-made slurry wall protection slurry for the cast-in-place pile wall is formed. Therefore, the verticality of the pit body is guaranteed, and the problem that the soil body is loosened and the pit wall soil body collapses due to the fact that the drill bit directly cuts the soil layer to scratch the soil layer of the pile wall of the cast-in-place pile in the rotation process of the traditional cast-in-place pile drill bit is solved. The soil layer cut into blocks or particles by the cross soil layer grinding drill bit 9 is coupled with the slurry and continuously dissolved into the slurry by the cross spiral slurry stirring knife 8, and then the slurry is pumped by the slurry centrifugal pump 501 to be discharged from the cast-in-place pile barrel.
Preferably, the driving mechanism 7 comprises an underwater motor 701, a gear fixing shaft 702 and five transmission gears 703, the underwater motor 701 is installed on the top plate of the equipment box body 4, the output shaft of the underwater motor 701 downwards penetrates through the top plate of the equipment box body 4 to be arranged in the equipment box body 4, the gear fixing shaft 702 is installed in the equipment box body 4 through a gear shaft fixing bearing 704 and is arranged between the output shaft of the underwater motor 701 and the drill bit shaft 2, the five transmission gears 703 are arranged, one is sleeved on the output shaft of the underwater motor 701, two are sleeved on two ends of the gear fixing shaft 702, and the other two are sleeved on the drill bit shaft 2; the transmission gear sleeved on the front end of the gear fixing shaft 702 is meshed with the transmission gear sleeved on the output shaft of the underwater motor 701, and the transmission gear sleeved on the rear end of the gear fixing shaft 702 is meshed with the two gears sleeved on the drill bit shaft 2 to form a transmission mechanism. In order to prolong the service life of the transmission mechanism, a waterproof gear box 10 is arranged in the equipment box 4 to protect the whole transmission mechanism.
In order to facilitate the lifting of the device, the four corners of the top of the equipment box body 4 are respectively provided with a lifting lug 11.
When the utility model is used:
(1) the device is tied on a lifting lug 11 at the top of the equipment box body 4 by a steel wire rope or an iron chain, and the device is lifted by a winch arranged on a pile machine;
(2) after the device is lifted, a connecting bearing 6 on an equipment box 4 is aligned to the lower end of a drill rod 1 of the pile machine (remark: inner threads are sleeved on the inner wall of an inner ring of the bearing), and then the drill rod 1 is rotated to enable the lower end of the drill rod 1 to be fastened with the connecting bearing;
(3) the drilling machine is in place and kept stable, the center of the cylindrical hole-forming drill bit 3 is aligned to the center of the pile position, and the drill rod 1 is stably lowered to the pile position groove;
(4) switching on the underwater motor 701 and starting the motor;
(5) when the underwater motor 701 starts to operate, a transmission gear on an output shaft of the motor is transmitted to a transmission gear at the front end of the gear fixing shaft 702 to do work on the gear fixing shaft so as to enable the gear fixing shaft to rotate;
(6) the transmission gear at the rear end of the gear fixing shaft 702 does work and is transmitted to two transmission gears on the drill bit shaft 2;
(7) the drill bit shaft 2 rotates to enable the cylindrical hole forming drill bit 3, the cross spiral slurry stirring cutter 8 and the cross soil layer grinding drill cutter 9 to rotate;
(8) a conical cutter head 902 on the lower surface of the cross-shaped cutter rest 901 rotates along with the cross-shaped cutter rest 901 to loosen a soil layer, and then a layer of the soil layer is thinly cut by an inclined cutter head 903;
(9) the cut soil layer forms slurry under the slurry coupling and stirring action of the cross spiral slurry stirring knife 8, and then the slurry is pumped into a ground slurry processing tank by a slurry centrifugal pump.
In summary, the present invention is only a preferred embodiment, and not intended to limit the scope of the utility model, and all equivalent changes and modifications in the shape, structure, characteristics and spirit of the present invention described in the claims should be included in the scope of the present invention.
Claims (7)
1. A novel bored pile hole forming device is characterized by comprising a drill rod, a drill rod shaft, a cylindrical hole forming drill bit, a combined cutter, an equipment box body and a slurry discharging device, wherein the drill rod shaft is hollow and connected to the lower end of the drill rod to output slurry together with the drill rod, a slurry outlet is formed in the drill rod, the equipment box body is fixedly installed at the lower end of the drill rod through a connecting bearing, the cylindrical hole forming drill bit is arranged at the bottom of the equipment box body, the lower end of the drill rod shaft penetrates through the equipment box body to be inserted in the center of the cylindrical drill bit, the combined hole forming cutter is arranged in the cylindrical hole forming drill bit and fixed at the lower end of the drill rod shaft, the interval distance of 290 and 310mm is formed between the bottom of the combined cutter and the bottom of the cylindrical hole forming drill bit, and the drill rod shaft is driven to rotate by a driving mechanism, and the cylindrical hole-forming drill bit and the combined cutter inside the cylindrical hole-forming drill bit are driven to rotate together, the slurry discharge device comprises a slurry centrifugal pump arranged in the equipment box, a slurry suction port of the slurry centrifugal pump is connected with a slurry suction pipe, and a slurry discharge port of the slurry centrifugal pump is connected with a slurry discharge pipe.
2. The novel bored pile pore-forming device according to claim 1, wherein the lower end of the cylindrical pore-forming drill is serrated, and the cylinder arm of the cylindrical pore-forming drill is in the shape of a screen.
3. The novel bored pile hole-forming device according to claim 1, wherein the distance from the bottom of the combined cutter to the bottom of the cylindrical hole-forming drill is 300 mm.
4. The novel bored pile pore-forming device of claim 1, wherein the gang tool includes that cross spiral mud stirring sword and cross soil layer grind the boring cutter, cross spiral mud stirring sword sets up on the cross soil layer grinds the boring cutter, cross soil layer grinds the boring cutter and includes cross knife rest, a plurality of conical cutter head and the oblique tool bit of a plurality of, a plurality of conical cutter head and a plurality of the oblique tool bit is in the conical cutter head is first staggered arrangement from the extroversion to the inside on the cross knife rest to equal perpendicular setting down.
5. The novel bored pile hole-forming device according to claim 1, wherein the driving mechanism comprises an underwater motor, a gear fixing shaft and five transmission gears, the underwater motor is mounted on a top plate of the equipment box body, an output shaft of the underwater motor penetrates through the top plate of the equipment box body downwards and is arranged in the equipment box body, the gear fixing shaft is mounted in the equipment box body through a gear shaft fixing bearing and is arranged between the output shaft of the underwater motor and a drill bit shaft, one of the five transmission gears is sleeved on the output shaft of the underwater motor, two of the five transmission gears are sleeved at two ends of the gear fixing shaft, and the other two transmission gears are sleeved on the drill bit shaft; the transmission gear sleeved at the front end of the gear fixing shaft is meshed with the transmission gear sleeved on the output shaft of the underwater motor, and the transmission gear sleeved at the rear end of the gear fixing shaft is meshed with the two gears sleeved on the drill bit shaft to form a transmission mechanism.
6. The novel bored pile hole-forming device according to claim 5, wherein a waterproof gear box is further provided in the equipment box to protect the entire transmission mechanism.
7. A novel bored pile hole-forming device according to claim 1 or 5, wherein a lifting lug is provided at each of four corners of the top of the equipment box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121904886.4U CN216043538U (en) | 2021-08-13 | 2021-08-13 | Novel bored concrete pile pore-forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121904886.4U CN216043538U (en) | 2021-08-13 | 2021-08-13 | Novel bored concrete pile pore-forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216043538U true CN216043538U (en) | 2022-03-15 |
Family
ID=80558676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121904886.4U Active CN216043538U (en) | 2021-08-13 | 2021-08-13 | Novel bored concrete pile pore-forming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216043538U (en) |
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2021
- 2021-08-13 CN CN202121904886.4U patent/CN216043538U/en active Active
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