CN211395658U - Underwater soil body expanding stirrer - Google Patents
Underwater soil body expanding stirrer Download PDFInfo
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- CN211395658U CN211395658U CN201921959536.0U CN201921959536U CN211395658U CN 211395658 U CN211395658 U CN 211395658U CN 201921959536 U CN201921959536 U CN 201921959536U CN 211395658 U CN211395658 U CN 211395658U
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Abstract
The utility model relates to a soil body expands stirs ware under water, the soil body expands the fixed setting at the drilling rod lower extreme that stirs the ware under water, the drilling rod is the dual pipe drilling rod of cored pipe, the soil body expands the ware that stirs under water includes outer tube, inner tube, cutting stirring frame, drill bit and defeated thick liquid system, outer tube upper end and drilling rod fixed connection, the slip cap closes the lower part in the outer tube about the inner tube, cutting stirring frame circumference array sets up between outer tube and inner tube, the drill bit is fixed to be set up at the inner tube lower extreme. The utility model aims at providing an underwater soil body expands stirs ware in order to solve the problem that inviscid soil layer on every side can not be steady, collapse easily when expanding the end under water.
Description
Technical Field
The utility model relates to a foundation construction technical field especially relates to a soil body expands under water and stirs ware under water.
Background
The pedestal pile is an end-bearing pile with high bearing capacity, and is favored in pile foundation construction. The enlarged head portion of the pedestal pile is typically located in a non-cohesive soil formation such as sand, gravel, pebbles, etc. However, when the hole is enlarged in the inviscid soil under water, the enlarged space is very easy to collapse, and the enlarged space is usually difficult to enlarge to the frustum-shaped large-head space. If the underground water above the elevation of the enlarged head is drained firstly and then the reaming pile is constructed, the construction cost of the pedestal pile is undoubtedly and greatly increased. This is the main reason why there is no successful case of underwater construction of the pedestal pile in the current building market.
The key point of successful implementation of the underwater bottom-expanding pile is mainly how to ensure that a surrounding inviscid soil layer can be self-stabilized without collapse during underwater bottom expanding, and an effective method is to construct a retaining wall ring with certain thickness and certain strength at the periphery of a bottom expanding space.
The invention patent (CN 104389516A) adopts a primary or secondary extruding and expanding method to form holes, the hole forming process can fully extrude the soil in the pile hole, a compact shell is formed around the pile, and the stability of the hole wall can be effectively improved without collapse. However, the technology is not suitable for medium-density to compact underwater inviscid soil, especially for the situation that the diameter of the expanded base is large.
Disclosure of Invention
The utility model aims at providing an underwater soil body expands stirs ware in order to solve the problem that inviscid soil layer on every side can not be steady, collapse easily when expanding the end under water.
In order to achieve the above object, the utility model adopts the following technical scheme:
an underwater soil body spreading and stirring device is fixedly arranged at the lower end of a drill rod, the drill rod is a dual-pipe drill rod with a core pipe, the underwater soil body spreading and stirring device comprises an outer pipe, an inner pipe, a cutting and stirring frame, a drill bit and a slurry conveying system, the upper end of the outer pipe is fixedly connected with the drill rod, the inner pipe is sleeved at the lower part of the inner pipe in an up-and-down sliding mode, the cutting and stirring frame is arranged between the outer pipe and the inner pipe in a circumferential array mode, and the drill bit is fixedly arranged at the lower end of the inner pipe;
a partition plate is arranged at the inner upper part of the outer pipe, a connecting core pipe is communicated above the partition plate, and the connecting core pipe and the outer pipe are coaxially and fixedly arranged;
the cutting stirring frame consists of an upper cutting plate and a lower cutting plate, the upper end of the upper cutting plate is hinged with the outer wall of the lower end of the outer pipe, the upper end of the lower cutting plate is hinged with the lower end of the upper cutting plate, and the lower end of the lower cutting plate is hinged with the outer wall of the lower end of the inner pipe;
the slurry conveying system comprises an upper slurry outlet, a lower slurry outlet, an inverted T-shaped hole, a side through hole, a lower through pipe, an upper through pipe and a lower through pipe, wherein the upper slurry outlet, the lower slurry outlet, the inverted T-shaped hole and the side through hole are respectively arranged in an upper cutting plate, a lower cutting plate, a drill bit and an inner pipe, one end of the upper slurry outlet is positioned in the middle of the upper end of the upper cutting plate, the other end of the upper slurry outlet is positioned on the side surface of the lower end of the upper cutting plate, one end of the lower slurry outlet is positioned in the middle of the lower end of the lower cutting plate, the other end of the lower slurry outlet is positioned on the side surface of the upper end of the lower cutting plate, the cross section of the inverted T-shaped hole is in an inverted T shape, the upper end of the inverted T-shaped hole is positioned on the center of the top surface of the drill bit, the lower end of the side through hole is arranged on the lower part of the inner pipe, one, The other end of the lower through pipe penetrates through the lower part of the outer pipe and is communicated with the upper pulp outlet hole, the upper end of the lower through pipe is communicated with the connecting core pipe, and the lower end of the lower through pipe is communicated with the upper end of the inverted T-shaped hole.
Further, the inner diameter of the outer tube is equal to the outer diameter of the inner tube.
Furthermore, a plurality of vertical guide grooves are formed in the circumferential array of the inner wall of the lower portion of the outer pipe, a plurality of vertical guide strips are formed in the circumferential array of the outer wall of the upper portion of the inner pipe, the guide strips correspond to the guide grooves one to one, and the cross section shapes of the guide strips correspond to the cross section shapes of the guide grooves.
Further, outer tube inside wall circumference array is provided with the vertical recess of a plurality of, the quantity of recess equals the quantity of last siphunculus, it is located the recess to go up the siphunculus.
Furthermore, a plurality of positioning hoops are sleeved at the lower part of the inner pipe, and the outer diameter of each positioning hoop is equal to that of the outer pipe.
Furthermore, cutting edges are arranged on one side of the upper cutting plate, which is far away from the upper slurry outlet, and one side of the lower cutting plate, which is far away from the lower slurry outlet, and the cutting edges of the upper cutting plate and the lower cutting plate are arranged in the same direction.
Through the technical scheme, the beneficial effects of the utility model are that:
through the utility model discloses expand the wall protecting circle that has certain thickness and certain intensity at end space periphery constitution, the inviscid soil layer on every side can be from steady not collapsing when guaranteeing to expand the end under water.
Drawings
Fig. 1 is one of the structural schematic diagrams of the underwater soil body spreading and stirring device of the present invention.
Fig. 2 is a second schematic structural view of the underwater soil body agitator of the present invention.
Fig. 3 is a third schematic structural view of the underwater soil body stirring device of the present invention.
Fig. 4 is the fourth schematic structural diagram of the underwater soil body stirring device of the present invention.
Fig. 5 is the longitudinal section of the underwater soil body expanding and stirring device of the utility model.
Fig. 6 is the utility model discloses a horizontal cross-sectional view that the soil body expands stirs ware under water.
Fig. 7 is a cross-sectional view of the cutting stirring frame of the underwater soil body stirring device of the present invention.
The reference numbers in the drawings are as follows: the cutting tool comprises an outer pipe 1, an inner pipe 2, a cutting stirring frame 3, a drill bit 4, a partition plate 5, a connecting core pipe 6, an upper slurry outlet 7, a lower slurry outlet 8, an inverted T-shaped hole 9, a side through hole 10, a low-pass pipe 11, an upper through pipe 12, a lower through pipe 13, a positioning hoop 14, an upper cutting plate 301 and a lower cutting plate 302.
Detailed Description
The invention will be further explained with reference to the drawings and the detailed description below:
as shown in fig. 1 to 7, the underwater soil mass spreading and stirring device is fixedly arranged at the lower end of a drill rod, the drill rod is a dual-pipe drill rod with a core pipe, the underwater soil mass spreading and stirring device comprises an outer pipe 1, an inner pipe 2, a cutting and stirring frame 3, a drill bit 4 and a slurry conveying system, the upper end of the outer pipe 1 is fixedly connected with the drill rod, the inner pipe 2 is sleeved at the lower part of the inner pipe 1 in an up-and-down sliding manner, the cutting and stirring frame 3 is circumferentially arranged between the outer pipe 1 and the inner pipe 2 in an array manner, and the drill bit 4 is fixedly arranged at the lower end of the inner pipe 2;
a partition plate 5 is arranged at the upper part in the outer tube 1, a connecting core tube 6 is communicated above the partition plate 5, and the connecting core tube 6 and the outer tube 1 are coaxially and fixedly arranged;
the cutting stirring frame 3 consists of an upper cutting plate 301 and a lower cutting plate 302, the upper end of the upper cutting plate 301 is hinged with the outer wall of the lower end of the outer pipe 1, the upper end of the lower cutting plate 302 is hinged with the lower end of the upper cutting plate 301, and the lower end of the lower cutting plate 302 is hinged with the outer wall of the lower end of the inner pipe 2;
the slurry conveying system comprises an upper slurry outlet 7, a lower slurry outlet 8, an inverted T-shaped hole 9, a side through hole 10, a low-pass pipe 11, an upper through pipe 12 and a lower through pipe 13, wherein the upper slurry outlet 7, the lower slurry outlet 8, the inverted T-shaped hole 9 and the side through hole 10 are respectively arranged in an upper cutting plate 301, a lower cutting plate 302, a drill bit 4 and an inner pipe 2, one end of the upper slurry outlet 7 is positioned in the middle of the upper end of the upper cutting plate 301, the other end of the upper slurry outlet is positioned on the side surface of the lower end of the upper cutting plate 301, one end of the lower slurry outlet 8 is positioned in the middle of the lower end of the lower cutting plate 302, the other end of the lower slurry outlet is positioned on the side surface of the lower cutting plate 302, the cross section of the inverted T-shaped hole 9 is inverted T-shaped, the upper end of the inverted T-shaped hole 9 is positioned in the center of the top surface of the drill bit 4, the lower end of the circumferential side wall of the drill bit 4, the upper through pipe 12 and the lower through pipe 11 are both positioned in the outer pipe 1, one end of the upper through pipe 12 is communicated to the partition plate 5, the other end of the upper through pipe penetrates through the lower part of the outer pipe 1 and is communicated to the upper pulp outlet hole 7, the upper end of the lower through pipe 11 is communicated to the connecting core pipe 6, and the lower end of the lower through pipe is communicated to the upper end of the inverted T-shaped hole 9.
The inner diameter of the outer tube 1 is equal to the outer diameter of the inner tube 2.
The inner wall circumference array of outer tube 1 lower part is provided with the vertical guide slot of a plurality of, the outer wall circumference array of inner tube 2 upper portion is provided with the vertical conducting bar of a plurality of, conducting bar and guide slot one-to-one, and the cross sectional shape of conducting bar corresponds with the cross sectional shape of guide slot.
The outer tube 1 inside wall circumference array is provided with the vertical recess of a plurality of, the quantity of recess equals the quantity of last siphunculus 12, it is located the recess to go up siphunculus 12.
The lower part of the inner pipe 2 is sleeved with a plurality of positioning hoops 14, and the outer diameter of the positioning hoops 14 is equal to that of the outer pipe 1.
The side of the upper cutting plate 301 far away from the upper slurry outlet 7 and the side of the lower cutting plate 302 far away from the lower slurry outlet 8 are both provided with cutting edges, and the cutting edges of the upper cutting plate 301 and the lower cutting plate 302 are arranged in the same direction.
When the agitator is arranged at the bottom of the hole, the drill bit 4 stops moving downwards due to the blockage of soil at the bottom of the hole, and the cutting agitator frame 3 is opened and touches the wall of the hole. Slurry conveying is started, a drill rod is spun, an outer pipe 1 of the expansion stirrer descends along a nesting surface between the outer pipe and an inner pipe 2, soil on the wall of a hole is cut and stirred by a cutting stirring frame 3, and slurry flows out from a slurry outlet hole along respective pipelines and paths under pressure and enters the soil loosened by rotary cutting. During the stirring immediately following the cutting plate, the slurry and the soil mass are further mixed and rapidly initially set and solidified, while the cutting stirring frame 3 is further opened. At this stage, due to the resistance of the soil body at the bottom of the hole, the downward resistance of the drill bit 4 is greater than the cutting stirring resistance, the spinning effect of the drill rod on the expansion stirrer is mainly to gradually open the cutting stirring frame 3 to the designed opening, and the drill bit 4 can generate a certain amount of downward drilling due to the rotation under pressure. The larger the cone angle of the drill bit 4, the more dense the soil at the bottom of the hole, and the smaller this downward drilling amount. When the cutting and stirring frame 3 is gradually opened to the maximum, the pressure of a drill rod is increased, the drill bit 4 drills downwards, simultaneously the cutting and stirring frame 3 rotationally cuts soil around the hole with the maximum opening degree, slurry is continuously discharged from the slurry outlet hole to mix with the rotationally cut loose soil, and the bottom elevation of the designed stirring is reached.
The stirring range of the hole bottom formed by the stirring is expanded to be a combined shape that a cylinder is clamped between two round tables. The upper section of the upper round table is consistent with the section of the drilled hole, the lower section of the upper round table is the area swept by the cutting stirring frame 3 when the upper round table is opened to the maximum, the lower section of the upper round table is a cylinder with the section of the area, an inverted round table is connected below the upper round table, and the bottom surface of the round table is equivalent to the maximum section of the bottom drill 4.
Since the slurry outlet hole is positioned near the hinge joint of the upper cutting plate 301 and the lower cutting plate 302, the slurry is best solidified at the position, namely, a hard ring layer with relatively high strength is formed at the periphery of the stirring expanding range, while the slurry is infiltrated into the stirring expanding range, the strength is relatively weak, but the integrity is enhanced to a certain extent, which just provides a very convenient condition for next-step bottom expanding soil extraction.
When the agitator is lifted after the agitation is finished, the agitator still needs to rotate in the original direction, and the original slurry conveying is stopped, and the agitator is changed into the agitator for conveying the filling slurry with low strength after solidification. At this time, as the stirring expander is slowly lifted up, the cutting stirring frame 3 is stirred and gathered in the rotating process, and the original slurry remained in the pipe just reinforces the bottom of the stirring expanding range. The subsequent filling slurry will fill the space left by the agitator, thus maintaining the stability of the agitator-extended area, especially the high-strength ring layer on the periphery. When the stirrer is lifted up, the lifting speed is required to be noticed, and too high lifting speed can cause the bottom of the stirrer to form too large vacuum suction force, so that the formation of the mortar wall protecting ring is adversely affected.
In addition to the technical features described in the specification, the technology is known to those skilled in the art.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the present invention, so that equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.
Claims (6)
1. The underwater soil body expanding and stirring device is fixedly arranged at the lower end of a drill rod, the drill rod is a dual-pipe drill rod with a core pipe, and the underwater soil body expanding and stirring device is characterized by comprising an outer pipe (1), an inner pipe (2), a cutting and stirring frame (3), a drill bit (4) and a slurry conveying system, wherein the upper end of the outer pipe (1) is fixedly connected with the drill rod, the inner pipe (2) is sleeved at the lower part in the outer pipe (1) in an up-and-down sliding manner, the cutting and stirring frame (3) is circumferentially arranged between the outer pipe (1) and the inner pipe (2), and the drill bit (4) is fixedly arranged at the lower end of the inner pipe (2);
a partition plate (5) is arranged at the upper part in the outer pipe (1), a connecting core pipe (6) is communicated above the partition plate (5), and the connecting core pipe (6) and the outer pipe (1) are coaxially and fixedly arranged;
the cutting stirring frame (3) consists of an upper cutting plate (301) and a lower cutting plate (302), the upper end of the upper cutting plate (301) is hinged with the outer wall of the lower end of the outer pipe (1), the upper end of the lower cutting plate (302) is hinged with the lower end of the upper cutting plate (301), and the lower end of the lower cutting plate (302) is hinged with the outer wall of the lower end of the inner pipe (2);
the slurry conveying system comprises an upper slurry outlet (7), a lower slurry outlet (8), an inverted T-shaped hole (9), a side through hole (10), a low-pass pipe (11), an upper through pipe (12) and a lower through pipe (13), wherein the upper slurry outlet (7), the lower slurry outlet (8), the inverted T-shaped hole (9) and the side through hole (10) are respectively arranged in an upper cutting plate (301), a lower cutting plate (302), a drill (4) and an inner pipe (2), one end of the upper slurry outlet (7) is positioned in the middle of the upper end of the upper cutting plate (301), the other end of the upper slurry outlet is positioned on the side of the lower end of the lower cutting plate (302), the other end of the upper slurry outlet (8) is positioned on the side of the upper end of the lower cutting plate (302), the cross section of the inverted T-shaped hole (9) is inverted T-shaped, the upper end of the drill (9) is positioned in the center of the top surface of the drill (4), and the lower end of the circumferential side wall of the drill (4, the side through hole (10) circumference array sets up in inner tube (2) lower part, and side through hole (10) one end and T shape hole (9) lower extreme intercommunication, the other end pass through down siphunculus (13) and go out thick liquid hole (8) intercommunication down, go up siphunculus (12) and low pass tube (11) and all be located outer tube (1), go up siphunculus (12) one end and communicate to baffle (5), the other end passes outer tube (1) lower part and communicates to go out thick liquid hole (7), low siphunculus (11) upper end communicates to connecting core pipe (6), the lower extreme communicates to T shape hole (9) upper end.
2. An underwater soil body agitator according to claim 1, wherein the inner diameter of the outer pipe (1) is equal to the outer diameter of the inner pipe (2).
3. The underwater soil mass spreading and stirring device as claimed in claim 2, wherein the circumferential array of the inner wall of the lower part of the outer pipe (1) is provided with a plurality of vertical guide grooves, the circumferential array of the outer wall of the upper part of the inner pipe (2) is provided with a plurality of vertical guide bars, the guide bars and the guide grooves are in one-to-one correspondence, and the cross-sectional shapes of the guide bars and the guide grooves correspond.
4. The underwater soil mass spreading and stirring device as claimed in claim 1, wherein the circumferential array of the inner side wall of the outer pipe (1) is provided with a plurality of vertical grooves, the number of the grooves is equal to the number of the upper through pipes (12), and the upper through pipes (12) are positioned in the grooves.
5. The underwater soil mass spreading and stirring device as recited in claim 1, wherein a plurality of positioning hoops (14) are sleeved on the lower portion of the inner pipe (2), and the outer diameter of the positioning hoops (14) is equal to that of the outer pipe (1).
6. The underwater soil mass spreading and stirring device as recited in claim 1, wherein the side of the upper cutting plate (301) far away from the upper slurry outlet (7) and the side of the lower cutting plate (302) far away from the lower slurry outlet (8) are both provided with cutting edges, and the cutting edges of the upper cutting plate (301) and the lower cutting plate (302) are arranged in the same direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921959536.0U CN211395658U (en) | 2019-11-14 | 2019-11-14 | Underwater soil body expanding stirrer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921959536.0U CN211395658U (en) | 2019-11-14 | 2019-11-14 | Underwater soil body expanding stirrer |
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| CN211395658U true CN211395658U (en) | 2020-09-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863484A (en) * | 2019-11-14 | 2020-03-06 | 河南理工大学 | Underwater soil body expanding stirrer and construction method of underwater pedestal pile |
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2019
- 2019-11-14 CN CN201921959536.0U patent/CN211395658U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863484A (en) * | 2019-11-14 | 2020-03-06 | 河南理工大学 | Underwater soil body expanding stirrer and construction method of underwater pedestal pile |
| CN110863484B (en) * | 2019-11-14 | 2024-04-19 | 河南理工大学 | Underwater soil body expansion stirrer and construction method of underwater pedestal pile |
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