CN101705681B - Switching device of cast equipment of concrete bored pile - Google Patents
Switching device of cast equipment of concrete bored pile Download PDFInfo
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- CN101705681B CN101705681B CN2009102083120A CN200910208312A CN101705681B CN 101705681 B CN101705681 B CN 101705681B CN 2009102083120 A CN2009102083120 A CN 2009102083120A CN 200910208312 A CN200910208312 A CN 200910208312A CN 101705681 B CN101705681 B CN 101705681B
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- concrete
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- demarcation strip
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Abstract
The invention discloses a switching device of cast equipment of a concrete bored pile, comprising a hollow steel box (1), wherein the upper end of the steel box (1) is communicated with the lower end of a hopper (2), and the lower end of the steel box (1) is communicated with the top end of a main conduit (3); the steel box (1) is internally hinged with a division plate, the shape and the area of which are matched with those of a cross section in the steel box (1); and the steel box (1) is provided with a position limiting device capable of keeping the division plate in a horizontal state. The switching device of the cast equipment of the concrete bored pile can ensure that the process for pouring concrete for the first time is uniform and continuous and no sandbag is mixed in the concrete in a pile foundation.
Description
Technical field
The present invention relates to the construction equipment of pile foundation in a kind of civil engineering, specifically is a kind of switching device of the equipment of building of concrete drilling bored concrete pile.
Background technology
Concrete drilling bored concrete pile is the pile foundation of a kind of on-the-spot pore-forming, poured in place concrete.Concrete drilling bored concrete pile possesses advantages such as diameter is big, bearing capacity is high, relative cost is low, but need a large amount of mud of using in its work progress, and these mud can cause environmental problem when discharging, therefore, the undemanding relatively occasion of job site environmental requirement (in some engineerings such as road, bridge) concrete drilling bored concrete pile is still generally being used.
The construction of concrete drilling bored concrete pile comprises following process:
1, pore-forming is promptly used diameter and the degree of depth pore-forming of rig according to designing requirement, fills mud simultaneously in the hole, utilizes mud off, avoids the soil body slump of hole wall;
2, carry out hole operation clearly behind the pore-forming, promptly clean out remaining in the hole scum silica frost except that mud in the boring procedure by the slag absorbing device;
3, then that colligation is good reinforcing cage places in the hole;
4, concrete perfusion (slurry) is about to fill with the concrete of density greater than mud in the hole, and by concrete mud is extruded in the hole;
5, curing concrete makes it intensity and reaches designing requirement, concrete drilling bored concrete pile.
And the equipment of building of traditional concrete drilling bored concrete pile comprises a hopper, by many segmentation conduits head and the tail to the main pipe that is connected into can control hopper and the switching device of main pipe break-make, the lower end of a described hopper and main pipe segmentation conduit topmost is communicated with, and described hopper is installed on the pile driving frame and is positioned at the top in hole and plane above Ground.
The concrete steps of the construction of above-mentioned concrete perfusion are as follows:
1, the outlet with the conduit of grouting equipment places in the hole a little more than stake (hole) position at the end, as 400mm place at the bottom of stake.
2, open switching device, realize being communicated with between hopper and the main pipe, make concrete in the hopper under action of gravity in the main pipe injection hole, simultaneously, constantly hopper is replenished concrete with pump truck, to guarantee that concrete is full of hopper, because concrete density is greater than mud, so under action of gravity, mind-set hole bottom perimeter diffusion at the bottom of the hole of concrete meeting elder generation under the main pipe exit, at the bottom of concrete is full of the hole, form the branch liquid level of level with mud, divide liquid level constantly to rise subsequently, the mud that density is less is extruded from the top, hole, when the branch liquid level arrival main pipe of concrete and mud exported above certain altitude such as 1.4m, first concrete perfusion was finished.
3, continue upwards fluid concrete, make the branch liquid level of concrete and mud continue the rising certain altitude, again with boom hoisting with main pipe and hopper rising certain altitude, disassemble main pipe segmentation conduit topmost then, again with main pipe not disengaging section dock with hopper, at this moment, though improve the exit position of main pipe, but still be lower than the branch liquid level of concrete and mud, and continue concrete perfusion in the hole, make and divide liquid level to continue a lifting.
4, repeating step 3 repeatedly is in concrete is filled with the hole.
The switching device of the equipment of building of the concrete drilling bored concrete pile of prior art is generally following two kinds:
First kind is the cover plate that placement one covers in the connected entrance of main pipe in hopper, and a side of this cover plate is fixed with an end of rope, and the other end of rope is fixed with the traction facility; People start the traction facility, just cover plate can be drawn back from connected entrance, realize the connection between hopper and the main pipe.
But there is following defective in this switching device:
Because cover plate is positioned at and fills with concrete hopper, born very big concrete pressure, therefore draw the process of cover plate very slow on, in the process that cover plate is drawn back, the area of connected entrance changes from small to big gradually, the area that is the passage of concrete circulation changes from small to big lentamente, makes concrete flow velocity inhomogeneous discontinuous.
And the key of the process of concrete perfusion is in the process of first concrete perfusion, concrete flow velocity must be evenly continuously, like this, could make mind-set hole bottom perimeter diffusion concrete is earlier at the bottom of the hole under the main pipe exit, be full of then at the bottom of the hole and form the branch liquid level of level with mud, and divide liquid level constantly to rise, the mud that density is less is extruded from the top, hole, otherwise, concrete and mud will mix mutually, thereby reduce the intensity and the hardness of concrete drilling bored concrete pile, have a strong impact on the quality and the safety of pile foundation, even fracture accident occurs.
Second kind is with steel wire sandbag to be suspended in midair, makes sandbag that the connected entrance of hopper and main pipe is blocked, and when needing concrete perfusion, cuts off steel wire, makes sandbag drop, and hopper is communicated with main pipe.
But there is following defective in this switching device:
The sandbag that drops can along with concrete in the main pipe injection hole, finally be mingled in the concrete of pile foundation, like this, can reduce the intensity and the hardness of concrete drilling bored concrete pile greatly, have a strong impact on the quality and the safety of pile foundation.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of and can guarantee that the first concrete perfusion process in the concrete perfusion process evenly continuously and do not have a switching device of the equipment of building of the concrete drilling bored concrete pile in the concrete that sandbag is mingled in pile foundation.
Technical solution of the present invention is, a kind of switching device of the equipment of building of the concrete drilling bored concrete pile with following structure is provided, it comprises the steel casing of a hollow, the upper end of described steel casing is communicated with the lower end of hopper, the lower end of described steel casing is communicated with the top of main pipe, be hinged with the demarcation strip that the cross section in a shape and area and the steel casing coincide in the described steel casing, described steel casing is provided with the stopping means that can keep demarcation strip to be positioned at level; When the limited device of demarcation strip remained on level, demarcation strip was separated into upper chamber that is communicated with hopper and the lower chambers that is communicated with main pipe with the inside of steel casing; When stopping means broke away from demarcation strip, demarcation strip rotated around pin joint rapidly and hangs down to vertical state at last.
After adopting above structure, the switching device of the equipment of building of bored pile of the present invention compared with prior art has the following advantages:
Owing to be hinged with the demarcation strip that the cross section in a shape and area and the steel casing coincide in the described steel casing, described steel casing is provided with the stopping means that can keep demarcation strip to be positioned at level, like this, when the limited device of demarcation strip remains on level, demarcation strip is separated into upper chamber that is communicated with hopper and the lower chambers that is communicated with main pipe with the inside of steel casing, this moment, hopper and main pipe disconnected, and the above upper chamber of hopper and demarcation strip is full of concrete; When stopping means breaks away from demarcation strip, under the effect of demarcation strip concrete above it and its deadweight, rotate around pin joint rapidly and hang down to vertical state at last, at this moment, hopper and main pipe become connection by disconnection rapidly, this hopper and main pipe are very fast by the process that disconnection becomes connection, even to can be understood as be an instantaneous process of finishing, cancelled the process that the area of connected entrance changes from small to big gradually, connected entrance is that the area of passage of concrete circulation is constant all the time in its handshaking procedures, so the process of the first concrete perfusion of assurance concrete perfusion is evenly continuous, avoided concrete and mud to mix mutually, thereby improved the intensity of concrete drilling bored concrete pile, ensured the quality and the safety of pile foundation, stopped fracture accident; And this switching device no longer comprises sandbag, so avoided sandbag to be mingled in the concrete of pile foundation.
As improvement, the upper head plate of described steel casing is provided with a connected entrance, is welded with butt tube on the described connected entrance, and the described butt tube of going up is communicated with hopper, and like this, the steel casing is more convenient with docking of hopper.
As improving, the bottom plate of described steel casing is provided with a connected entrance, is welded with butt tube on the described connected entrance again, and described butt tube down is communicated with main pipe, and like this, the steel casing is more convenient with docking of main pipe.
As further improvement, be penetrated with on the described side plate that stopping means is set a level to slotted hole, described this side plate outer wall is provided with a free bearing by the position of slotted hole, be fixed with one on the described free bearing, the level that is rotatably assorted on the described axle to the door bolt of living that constitutes by a limiting plate and a tommy bar, described limiting plate away from the distance of the end face of tommy bar and the axis of axle greater than the distance of this side plate inwall with the axis of axle, the height of the upper surface of the described door bolt of living is equal to or slightly lower than the height of the lower surface of the demarcation strip that is the level of state, like this, when limiting plate gos deep into the inwall of side plate away from the end face of tommy bar, limiting plate supports demarcation strip, and people can pull tommy bar, drives limiting plate and rotates, finally make limiting plate break away from demarcation strip, cause demarcation strip sagging, realize opening of switching device, so the laborsaving convenience of operating process.
As further improving, be provided with a hemispherical packing ring between the lower surface of the described door bolt of living and the free bearing, like this, realized that door bolt alive lower surface contact with line between the packing ring, make both contact area minimum, frictional force is also minimum, so operate more laborsaving.
As also further improving, the described door bolt of living also comprises a location-plate, described location-plate, tommy bar and limiting plate all are positioned at same horizontal plane, described location-plate and limiting plate are vertically fixed on the two ends of tommy bar respectively, when tommy bar is parastate with the side plate that free bearing is installed, the length of described location-plate equals the tommy bar inner face and distance between the lateral surface of side plate of free bearing is installed, like this, location-plate will push against on this side plate lateral surface when vertical with the side plate that free bearing is installed, the limiting plate parallel with location-plate also can be vertical with this side plate, at this moment, the length of inwall that limiting plate gos deep into this side plate is the longest, so that demarcation strip is subjected to the support of limiting plate is the most firm, so, when location-plate and this side plate pushed against, demarcation strip was positioned at optimal closed state.
Description of drawings
Fig. 1 is the partial elevational structural representation of the equipment of building of concrete drilling bored concrete pile of the present invention.
Fig. 2 is the broken section structural representation of switching device of the equipment of building of concrete drilling bored concrete pile of the present invention.
Fig. 3 is the fragmentary top TV structure schematic diagram of switching device of the equipment of building of concrete drilling bored concrete pile of the present invention.
Shown in the figure 1, the steel casing, 2, hopper, 3, main pipe, 4, demarcation strip, 5, go up butt tube, 6, following butt tube, 7, slotted hole, 8, free bearing, 9, axle, 10, limiting plate, 11, tommy bar, 12, hemispheric packing ring, 13, the door bolt of living, 14, rotating shaft, 15, location-plate.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As Fig. 1, Fig. 2, shown in Figure 3, the switching device of the equipment of building of concrete drilling bored concrete pile of the present invention, it comprises the steel casing 1 of a hollow.The upper end of described steel casing 1 is communicated with the lower end of hopper 2, and the upper head plate of promptly described steel casing 1 is provided with a connected entrance, is welded with butt tube 5 on the described connected entrance, and the described butt tube 5 of going up is communicated with hopper 2.The lower end of described steel casing 1 is communicated with the top of main pipe 3, and the bottom plate of promptly described steel casing 1 is provided with a connected entrance, is welded with butt tube 6 on the described connected entrance, and described butt tube 6 down is communicated with main pipe 3.Be hinged with the demarcation strip 4 that the cross section in a shape and area and the steel casing 1 coincide in the described steel casing 1, be that described steel casing 1 is cuboid, described demarcation strip 4 is a square, in other words, the plan view shape of described steel casing 1 is a square, and its main looking is shaped as rectangle, and a face down bonding of described demarcation strip 4 bottom surfaces is connected to a rotating shaft 14, described steel casing 1 biside plate is provided with position and the corresponding installing hole in rotating shaft 14 two ends, described rotating shaft 14 rotatable being matched with in the installing hole.
Described steel casing 1 is provided with the stopping means that can keep demarcation strip 4 to be positioned at level.Specifically: the stopping means that can keep demarcation strip 4 to be positioned at level is arranged on the side plate of steel casing 1, and this side plate is all adjacent with the biside plate that is provided with installing hole.Be penetrated with on the described side plate that stopping means is set a level to slotted hole 7, described this side plate outer wall leans on the position of slotted hole 7 to be provided with free bearing 8, and (this free bearing 8 is by being fixed on the slotted hole 7, two free bearings of below constitute), be fixed with one 9 on the described free bearing 8, the level that is rotatably assorted on the described axle 9 to the door bolt 13 of living that constitutes by a limiting plate 10 and a tommy bar 11, greater than the distance of this side plate inwall with the axis of axle 9, the height of the upper surface of the described door bolt 13 of living is equal to or slightly lower than the height of the lower surface of the demarcation strip 4 that is the level of state to described limiting plate 10 away from the distance of the end face of tommy bar 11 and the axis of axle 9.The described door bolt 13 of living also comprises a location-plate 15, described location-plate 15, tommy bar 11 and limiting plate 10 all are positioned at same horizontal plane, and two ends and described limiting plate 10, tommy bar 11 and location-plate 15 that described location-plate 15 and limiting plate 10 are vertically fixed on tommy bar 11 respectively are an integral body.When tommy bar 11 was parastate with the side plate that free bearing 8 is installed, the length of described location-plate 15 equaled tommy bar 11 inner faces and distance between the lateral surface of side plate of free bearing 8 is installed.Be provided with a hemispherical packing ring 12 between the lower surface of the described door bolt 13 of living and the free bearing 8.
Use dedicated pipe nut to dock with the opposing pipe 5 that docks, goes up of following butt tube 6 with the conventional butt tube that all adopts that docks between the hopper 2 as the butt joint between the segmentation conduit, main pipe 3 between all pipelines of present embodiment.
Claims (9)
1. the switching device of the equipment of building of a concrete drilling bored concrete pile, it is characterized in that: it comprises the steel casing (1) of a hollow, the upper end of described steel casing (1) is communicated with the lower end of hopper (2), the lower end of described steel casing (1) is communicated with the top of main pipe (3), be hinged with the demarcation strip (4) that the cross section in a shape and area and the steel casing (1) coincide in the described steel casing (1), described steel casing (1) is provided with the stopping means that can keep demarcation strip (4) to be positioned at level; When the limited device of demarcation strip (4) remained on level, demarcation strip (4) was separated into upper chamber that is communicated with hopper (2) and the lower chambers that is communicated with main pipe (3) with the inside of steel casing (1); When stopping means broke away from demarcation strip (4), demarcation strip (4) rotated around pin joint rapidly and hangs down to vertical state at last.
2. the switching device of the equipment of building of concrete drilling bored concrete pile according to claim 1, it is characterized in that: the upper end of described steel casing (1) is communicated with the lower end of hopper (2) and is meant, the upper head plate of described steel casing (1) is provided with a connected entrance, be welded with butt tube on (5) on the described connected entrance, the described butt tube (5) of going up is communicated with hopper (2).
3. the switching device of the equipment of building of concrete drilling bored concrete pile according to claim 1, it is characterized in that: the lower end of described steel casing (1) is communicated with the top of main pipe (3) and is meant, the bottom plate of described steel casing (1) is provided with a connected entrance, be welded with butt tube (6) on the described connected entrance, described butt tube (6) down is communicated with main pipe (3).
4. the switching device of the equipment of building of concrete drilling bored concrete pile according to claim 1, it is characterized in that: described steel casing (1) is a cuboid, described demarcation strip (4) is a square, one face down bonding of described demarcation strip (4) bottom surface is connected to a rotating shaft (14), described steel casing (1) biside plate is provided with position and the corresponding installing hole in rotating shaft (14) two ends, and described rotating shaft (14) is rotatable to be matched with in the installing hole.
5. the switching device of the equipment of building of concrete drilling bored concrete pile according to claim 4, it is characterized in that: the stopping means that can keep demarcation strip (4) to be positioned at level is arranged on the side plate of steel casing (1), and this side plate is all adjacent with the biside plate that is provided with installing hole.
6. the switching device of the equipment of building of concrete drilling bored concrete pile according to claim 5, it is characterized in that: be penetrated with on the described side plate that stopping means is set a level to slotted hole (7), described this side plate outer wall is provided with free bearing (8) by the position of slotted hole (7), be fixed with on the described free bearing (8) one (9), the level that is rotatably assorted on the described axle (9) to fasten (13) with a bolt or latch by living of constituting of a limiting plate (10) and a tommy bar (11), greater than the distance of this side plate inwall with the axis of axle (9), the height of the upper surface of the described door bolt (13) of living is equal to or slightly lower than the height of the lower surface of the demarcation strip (4) that is the level of state to described limiting plate (10) away from the distance of the end face of tommy bar (11) and the axis of axle (9).
7. the switching device of the equipment of building of concrete drilling bored concrete pile according to claim 6 is characterized in that: be provided with a hemispherical packing ring (12) between the lower surface of the described door bolt (13) of living and the free bearing (8).
8. the switching device of the equipment of building of concrete drilling bored concrete pile according to claim 6, it is characterized in that: the described door bolt (13) of living also comprises a location-plate (15), described location-plate (15), tommy bar (11) and limiting plate (10) all are positioned at same horizontal plane, described location-plate (15) and limiting plate (10) are vertically fixed on the two ends of tommy bar (11) respectively, when tommy bar (11) was parastate with the side plate that free bearing (8) is installed, the length of described location-plate (15) equaled tommy bar (11) inner face and distance between the lateral surface of side plate of free bearing (8) is installed.
9. the switching device of the equipment of building of concrete drilling bored concrete pile according to claim 8, it is characterized in that: described limiting plate (10), tommy bar (11) and location-plate (15) are an integral body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102083120A CN101705681B (en) | 2009-10-29 | 2009-10-29 | Switching device of cast equipment of concrete bored pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102083120A CN101705681B (en) | 2009-10-29 | 2009-10-29 | Switching device of cast equipment of concrete bored pile |
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| CN101705681A CN101705681A (en) | 2010-05-12 |
| CN101705681B true CN101705681B (en) | 2011-08-03 |
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| CN2009102083120A Active CN101705681B (en) | 2009-10-29 | 2009-10-29 | Switching device of cast equipment of concrete bored pile |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1079757A1 (en) * | 1982-05-11 | 1984-03-15 | Научно-Исследовательский Институт Промышленного Строительства | Apparatus for constructing cast-in-place shell pile |
| US5152639A (en) * | 1990-01-16 | 1992-10-06 | Roberto Visconti | Tubular footing form for building foundation piles of concrete |
| CN2611571Y (en) * | 2003-04-16 | 2004-04-14 | 刘润郊 | Bit for drilling pump pouring concrete and forming pile by jetting slurry expanding bottom |
| CN2680730Y (en) * | 2003-10-24 | 2005-02-23 | 王亦德 | Drilling bit for concrete pile pumped inside pipe |
| CN101328710A (en) * | 2008-07-25 | 2008-12-24 | 孔清华 | Synchronous soil lifting grouting rectangular filling pile apparatus and method |
| CN201554021U (en) * | 2009-10-29 | 2010-08-18 | 杭州萧宏建设集团有限公司 | Switching device for pouring equipment of concrete bored pile |
-
2009
- 2009-10-29 CN CN2009102083120A patent/CN101705681B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1079757A1 (en) * | 1982-05-11 | 1984-03-15 | Научно-Исследовательский Институт Промышленного Строительства | Apparatus for constructing cast-in-place shell pile |
| US5152639A (en) * | 1990-01-16 | 1992-10-06 | Roberto Visconti | Tubular footing form for building foundation piles of concrete |
| CN2611571Y (en) * | 2003-04-16 | 2004-04-14 | 刘润郊 | Bit for drilling pump pouring concrete and forming pile by jetting slurry expanding bottom |
| CN2680730Y (en) * | 2003-10-24 | 2005-02-23 | 王亦德 | Drilling bit for concrete pile pumped inside pipe |
| CN101328710A (en) * | 2008-07-25 | 2008-12-24 | 孔清华 | Synchronous soil lifting grouting rectangular filling pile apparatus and method |
| CN201554021U (en) * | 2009-10-29 | 2010-08-18 | 杭州萧宏建设集团有限公司 | Switching device for pouring equipment of concrete bored pile |
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| CN101705681A (en) | 2010-05-12 |
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Address after: 311052 7th floor, Xiaohong building, 1777 Binsheng Road, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: HANGZHOU XIAOHONG CONSTRUCTION Group Ltd. Address before: 310052, building 6, Xiao Hong building, No. 1777 bin Sheng Road, Hangzhou, Zhejiang, Binjiang District Patentee before: HANGZHOU XIAOHONG CONSTRUCTION Group Ltd. |
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