CN214883605U

CN214883605U - Micro-disturbance type multiple-pipe four-axis stirring pile construction equipment

Info

Publication number: CN214883605U
Application number: CN202120879101.6U
Authority: CN
Inventors: 娄荣祥; 张力; 周振
Original assignee: Shanghai Yuanfeng Underground Engineering Technology Co ltd
Current assignee: Shanghai Yuanfeng Underground Engineering Technology Co ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-11-26
Anticipated expiration: 2031-04-27

Abstract

The utility model provides a multiple pipe four-axis stirring stake construction equipment of perturbation type, it includes the drilling rod, set up in the headstock on drilling rod top, set up in the drill bit of drilling rod bottom and set up in a plurality of stirring vane on the drilling rod, set up respectively in the drilling rod and be provided with cement thick liquid passageway, signal line passageway and additive passageway, cement thick liquid passageway respectively with set up in the lower grout spraying mouth of drill bit with set up in the last grout spraying mouth at drilling rod middle part is linked together, the additive passageway with set up in the additive export of drill bit is linked together, still set up on the drilling rod with the adjacent pressure sensor of drill bit, pressure sensor with set up in signal line in the signal line passageway is connected. Adopt the technical scheme of the utility model, can reduce the influence to all ring edge borders during the construction.

Description

Micro-disturbance type multiple-pipe four-axis stirring pile construction equipment

Technical Field

The utility model relates to a building engineering field especially relates to a multiple pipe four-axis stirring stake construction equipment of perturbation type.

Background

As shown in figure 1, during construction, the drilling tool cuts undisturbed soil stratum, and cement slurry is mixed into undisturbed soil to be stirred, and then a cement-soil mixing pile is formed. At the initial stage of pile body formation, the hydration action of cement is just started, and the forming and solidifying action is not formed in the mixing pile, and its internal pressure is mainly P2. Because the mixing pile is added with cement paste formed by a certain amount of water and cement, the density is generally smaller than that of undisturbed soil, and partial undisturbed soil is replaced, so that P2 (pile internal pressure) < P1 (pile external pressure) can be caused, although the difference between the two is not large, and the consolidation strength is increased along with the enhancement of the hydration action of the cement, at the initial stage, under the influence of the space-time effect, the undisturbed soil can extrude and displace towards the interior of the pile, so that a working face is settled to a certain extent, and particularly when buildings are arranged on the periphery, the undisturbed soil can be damaged.

Therefore, there is a need for a tool and method for monitoring the pressure in the ground during construction to reduce the operating time of P2< P1 and the difference between them, so as to minimize the effect on the surrounding environment during construction.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multiple pipe four-axis stirring stake construction equipment of perturbation type and construction method to reduce the influence to the surrounding environment during construction.

The embodiment of the utility model provides an in, provide a multiple pipe four-axis stirring stake construction equipment of perturbation type, it includes the drilling rod, set up in the headstock on drilling rod top, set up in the drill bit of drilling rod bottom and set up in a plurality of stirring vane on the drilling rod, set up respectively in the drilling rod and be provided with cement thick liquid passageway, signal line passageway and additive passageway, cement thick liquid passageway respectively with set up in the lower grout spraying mouth of drill bit with set up in the last grout spraying mouth at drilling rod middle part is linked together, the additive passageway with set up in the additive export of drill bit is linked together, still set up on the drilling rod with the adjacent pressure sensor of drill bit, pressure sensor with set up in signal line in the signal line passageway is connected.

In the embodiment of the utility model provides an in, the drilling rod be provided with outward with the signal contact that the signal line is connected, be provided with annular contact mechanism in the headstock, make when the drilling rod rotates, the signal contact with contact mechanism keeps the contact always.

In the embodiment of the utility model provides an in, the quantity of drilling rod is 4, be a linear arrangement set up in the headstock below, perhaps two liang set up side by side in the headstock below.

In the embodiment of the utility model, a plurality of stirring vane with the drilling rod is perpendicular, and crisscross set up in on the drilling rod.

In the embodiment of the utility model provides an in, go up the grout spraying mouth set up in lie in on the drilling rod the position of a plurality of stirring vane tops.

Compared with the prior art, the construction equipment of the micro-disturbance type multi-pipe four-axis mixing pile construction equipment is adopted, a cement slurry channel, a signal line channel and an additive channel are respectively arranged in the drill rod, three different media can be transmitted in the drill rod, and additives of different types and quantities can be added in the mixing pile forming process; the drill rod is also provided with a pressure sensor which can monitor the underground pressure in real time and control the rotating speed of the drill rod and the flow of cement slurry in the cement slurry channel according to the underground pressure so as to avoid the disturbance to the surrounding environment during construction; when the drill rod is lifted, the lower slurry spraying port is closed, the upper slurry spraying port is opened and cement slurry is sprayed, excessive grouting pressure is not needed behind the slurry spraying port, and disturbance to the surrounding environment during construction can be reduced through more flexible pressure control.

Drawings

Fig. 1 is a schematic view of the pressure inside the mixing pile.

Fig. 2 is the utility model discloses perturbation type multiple tube four-axis stirring stake construction equipment's of embodiment structural schematic.

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

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following describes the implementation of the present invention in detail with reference to specific embodiments.

As shown in fig. 2, a perturbation type multi-pipe four-axis mixing pile construction device is provided, which comprises a drill rod 1, a power box 2 arranged at the top end of the drill rod 1, a drill bit 3 arranged at the bottom end of the drill rod 1, and a plurality of mixing blades 4 arranged on the drill rod 1.

As shown in fig. 3, a cement slurry passage 11, an additive passage 12, and a signal line passage 13 are provided in the drill rod 1. The cement grout channel 11 is respectively communicated with a lower grout spraying port 31 arranged on one side of the drill bit 3 and an upper grout spraying port 14 arranged in the middle of the drill rod, and the cement grout channel 11 is used for conveying cement grout.

The additive channel 12 is communicated with an additive outlet 32 arranged at the other side of the drill bit 3 and used for conveying additives required by the mixing pile in the mixing process. The additives may be selected in different amounts and types depending on the formation design and the cement slurry formulation. For example, a quick-setting type additive may be used to allow the mixing stub to set quickly after formation, to the effect of the perturbation.

The drill rod 1 is further provided with a pressure sensor 5, and the pressure sensor 5 is arranged close to the drill bit 3 and used for detecting the underground pressure of the position of the drill bit 3. The signal line channel 13 is used for installing a signal line (not labeled) for transmitting the signal of the pressure sensor 5. And a signal contact 52 connected with the signal wire is arranged outside the drill rod 1. The power box 2 is provided with an annular contact point contact mechanism 53, the contact point contact mechanism 53 is in contact with the signal contact point 52, when the drill rod 1 rotates, the signal contact point 52 also rotates along with the rotation, the movement track of the signal contact point 52 is annular, and the signal contact point is always in contact with the contact point contact mechanism 53.

The stirring blades 4 are perpendicular to the drill rod 1 and are arranged on the drill rod 1 in a staggered manner. And the stirring blades 4 are used for stirring cement slurry, soil and additives in the pile foundation. The upper grout port 14 is provided at a position above the plurality of agitating blades 4 on the drill rod 1. When the drill rod sinks, the upper grout spraying port 14 is closed, the lower grout spraying port 31 is opened and sprays cement grout, and the cement grout, soil and additives are stirred when the sunk stirring blades 4 are followed, so that the uniformity is improved, and the strength of a reinforcing body is improved; when the drill rod is lifted, the lower grout spraying port 31 is closed, the upper grout spraying port 14 is opened and sprays cement grout, and then the cement grout, soil and additives are stirred by the stirring blades 4 which follow the lifting, so that the uniformity is increased, and the strength of the reinforcing body is improved. In the conventional mixing pile drill rod, only the lower guniting port needs large pressure to enable cement slurry to rise above the mixing blade. The embodiment of the utility model provides an in, because the existence of last grout spraying mouth 14 does not need too big slip casting pressure can follow cement thick liquid go up grout spraying mouth 14 blowout, the disturbance to the surrounding environment during the construction can be reduced to more nimble pressure control.

In the embodiment of the utility model, the quantity of drilling rod is 4, can be a linear arrangement set up in the headstock below, also can two liang set up side by side in the headstock below.

In summary, the construction equipment of the micro-disturbance type multi-pipe four-axis mixing pile construction equipment of the utility model is provided with a cement slurry channel, a signal line channel and an additive channel in the drill rod, which can be used for transmitting three different media in the drill rod and adding different types and quantities of additives in the mixing pile forming process; the drill rod is also provided with a pressure sensor which can monitor the underground pressure in real time and control the rotating speed of the drill rod and the flow of cement slurry in the cement slurry channel according to the underground pressure so as to avoid the disturbance to the surrounding environment during construction; when the drill rod is lifted, the lower slurry spraying port is closed, the upper slurry spraying port is opened and cement slurry is sprayed, excessive grouting pressure is not needed behind the slurry spraying port, and disturbance to the surrounding environment during construction can be reduced through more flexible pressure control.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a multiple pipe four-axis of perturbation type stirring stake construction equipment, a serial communication port, including the drilling rod, set up in the headstock on drilling rod top, set up in the drill bit of drilling rod bottom and set up in a plurality of stirring vane on the drilling rod, set up respectively in the drilling rod and be provided with cement thick liquid passageway, signal line passageway and additive passageway, cement thick liquid passageway respectively with set up in the lower grout spraying mouth of drill bit with set up in the last grout spraying mouth at drilling rod middle part is linked together, the additive passageway with set up in the additive export of drill bit is linked together, still set up on the drilling rod with the pressure sensor that the drill bit is adjacent, pressure sensor with set up in signal line in the signal line passageway is connected.

2. The micro-disturbance type multi-pipe four-axis mixing pile construction equipment according to claim 1, wherein a signal contact connected with the signal line is arranged outside the drill rod, and an annular contact mechanism is arranged in the power box, so that the signal contact and the contact mechanism are always kept in contact when the drill rod rotates.

3. The micro-disturbance type multi-pipe four-axis mixing pile construction equipment according to claim 1, wherein the number of the drill rods is 4, and the drill rods are arranged below the power box in a straight line or in pairs side by side.

4. The micro-disturbance type multi-pipe four-axis mixing pile construction equipment according to claim 1, wherein the plurality of mixing blades are perpendicular to the drill rod and are arranged on the drill rod in a staggered manner.

5. The micro-disturbance type multi-pipe four-axis mixing pile construction equipment according to claim 1, wherein the upper grout port is provided at a position on the drill rod above the plurality of mixing blades.