CN108265724B - Bored pile hole concrete secondary back cover pouring device - Google Patents
Bored pile hole concrete secondary back cover pouring device Download PDFInfo
- Publication number
- CN108265724B CN108265724B CN201810291978.6A CN201810291978A CN108265724B CN 108265724 B CN108265724 B CN 108265724B CN 201810291978 A CN201810291978 A CN 201810291978A CN 108265724 B CN108265724 B CN 108265724B
- Authority
- CN
- China
- Prior art keywords
- conical
- connecting sleeve
- concrete
- leaf
- pile
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
Abstract
The invention provides a secondary bottom sealing pouring device for bored concrete of a pile hole, which comprises the following components: a connecting sleeve, at least two conical leaves; the cone-shaped blades are spliced into a complete cone, and the bottom surface contour of the cone is consistent with and butted with the contour of the connecting sleeve; each conical leaf is in pivot connection with one end of the connecting sleeve and can be freely opened and closed, the contact area between the front end of the guide pipe and mud and slurry in the hole is effectively reduced by arranging the connecting sleeve and the conical leaf, the surface mud and slurry are prevented from entering the guide pipe in the process of quickly inserting the concrete, the interlayer in the concrete of the pile body can be effectively prevented from being formed to break piles, when the concrete is poured, the conical leaf is opened under the action of the dead weight of the concrete so as to realize pouring, the success rate of pile pouring or pile splicing by a secondary guide pipe insertion method is effectively improved, the pile breaking rate is reduced, the construction cost is saved, and the construction efficiency is improved.
Description
Technical Field
The invention relates to the technical field of concrete pouring, in particular to a secondary bottom sealing pouring device for pile hole drilling concrete.
Background
The current common method for filling underwater concrete of the bored pile generally adopts a conduit method, and the principle is that a concrete mixture enters the lower part of the initial poured concrete through a conduit in sealed connection under the action of a certain drop pressure, and the initial poured concrete and slurry above the initial poured concrete are jacked up and gradually ascended to form a continuous compact concrete pile body. Therefore, the embedded depth of the lowest section of conduit is required to be always kept 2-6m below the concrete pouring surface in the pouring process of the concrete so as to ensure that the concrete can be poured continuously. However, in construction, the phenomenon that the pipe is accidentally pulled out of the concrete surface or the pouring is interrupted due to the blocking of the pipe by the concrete is unavoidable.
Disclosure of Invention
The invention aims to provide a secondary bottom sealing pouring device for bored concrete in a pile hole, which solves the problem that a guide pipe is accidentally pulled out of a concrete surface or the pouring is interrupted due to the blocking of a concrete pipe by arranging a conical blade.
In order to solve the above problems, the present invention provides a secondary bottom sealing pouring device for bored concrete pile, comprising: a connecting sleeve, at least two conical leaves; the cone-shaped blades are spliced into a complete cone, and the bottom surface contour of the cone is consistent with and butted with the contour of the connecting sleeve; each conical leaf is pivotally connected with one end of the connecting sleeve and can be freely opened and closed.
Further, the bored concrete secondary back cover pouring device further comprises: a locking ring and a locking rib; one end of the locking rib is fixedly arranged on the inner side of the conical leaf, the other end of the locking rib is bent towards the radial direction of the connecting sleeve, and the bending ends of all the locking ribs are sleeved in the locking ring.
Further, the bored concrete secondary back cover pouring device further comprises: a collar; the lantern ring is fixedly arranged on the connecting sleeve and/or the outer wall of the conical blade.
Further, the bored concrete secondary back cover pouring device further comprises: a limiting block; one end of the limiting block is fixedly arranged on the connecting side of the connecting sleeve and the conical leaf, the other side of the limiting block extends to the conical leaf part, and each conical leaf is correspondingly provided with a limiting block.
Further, the conical leaves in the bored concrete secondary bottom sealing pouring device are three.
Further, in the bored concrete secondary back cover pouring device, the conical leaves are connected with the connecting sleeve through hinges.
Through setting up connecting sleeve and toper leaf, effectively reduce the area of contact of pipe front end and downthehole mud and magma, in the quick insert concrete in-process, avoid top layer mud and magma to get into in the pipe, can effectively avoid appearing the intermediate layer in the pile body concrete and form broken pile, when beginning to pour into the concrete, thereby realize pouring by punching the toper leaf under the dead weight effect of concrete. The success rate of filling piles or pile extension by the secondary pipe insertion method is effectively improved, the pile breaking rate is reduced, the construction cost is saved, and the construction efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a prior art scheme;
FIG. 2 is a front view of an embodiment in accordance with the present invention;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a bottom view of an embodiment according to the present invention;
fig. 5 is a top view of an embodiment according to the present invention.
Reference numerals:
1: a connecting sleeve; 2: a conical leaf; 3: a hinge; 4: a locking rib; 5: a locking ring; 6: a collar; 7: and a limiting block.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
Referring to fig. 1, in the prior art, the concrete surface is accurately measured, then the conduit is hung on the concrete surface by 0.5-0.7 m (according to the diameter of the conduit), a precast concrete ball plug is tied on a double-strand 7-wire, and the precast concrete ball plug is placed on the water surface in the conduit (without gaps). Concrete is poured into the hopper for 0.1m 3 Slowly placing the precast concrete ball plug at the bottom end of the guide pipe, and fixing the iron wire on the hopper. The guide pipe is inserted under the concrete surface by 1.0m, the concrete is poured into the hopper, then the iron wire is cut off, and the concrete is continuously poured to the designed elevation.
The embodiments of the present invention will be described in detail below with reference to the attached drawings.
Referring to fig. 2-5, the bored concrete secondary back cover pouring device in this embodiment includes a connecting sleeve 1 and three conical leaves 2, and the number of the conical leaves 2 may be designed according to actual needs, and at least two conical leaves may be used. Three toper leaves 2 in this embodiment can splice into a complete cone, the bottom surface profile of cone is unanimous and dock with connecting sleeve 1 profile, every toper leaf 2 and connecting sleeve 1's one end is through pivot connection, in this embodiment it is hinge 3 connection to adopt, hinge 3's stiff end is fixed to be set up on connecting sleeve 1, and be located the hookup location of toper leaf 2 and connecting sleeve 1, hinge 3's rotating end is the U-shaped simultaneously, the rotating end is fixed to be set up in the lateral surface of toper leaf 2, and pass the stiff end, thereby make toper leaf 2 can freely rotate around the stiff end. Meanwhile, in order to avoid overlarge opening and closing angles of the conical leaves 2 when concrete is poured for the second time, the resistance is overlarge when the pouring tube is retracted, the limiting blocks 7 are further arranged on the outer wall of the connecting sleeve, the number of the limiting blocks 7 is consistent with that of the conical leaves 2, one side of each conical leaf 2 can be fixedly arranged on the outer wall of the connecting sleeve, and the other side of each limiting block 7 extends to the part of the conical leaf 2, so that the limiting block 7 prevents the conical leaf 2 from being opened and closed further due to the effect of the limiting block 7 when the conical leaf 2 is pushed away by concrete mixture, the limiting effect is achieved, and the conical leaves 2 can be effectively prevented from being broken. In order to prevent the pouring pipe from being opened in advance when the pouring pipe is inserted into concrete for secondary pouring, a locking rib 4 can be arranged on the inner side of each conical blade 2, one end of each locking rib 4 is fixedly arranged on the inner side of each conical blade 2, the other end of each locking rib is bent towards the radial direction of the connecting sleeve 1, in the embodiment, the bending angle is 159.44 degrees, then the locking rib 4 of each conical blade 2 is converged towards the center of the connecting sleeve 1 in the embodiment, then three locking ribs 4 are sleeved on each locking ring 5, and therefore, as the locking rib 4 is blocked by the locking ring 5, the conical blade 2 cannot be turned outwards, the sleeve ring 6 can be penetrated by steel wires, the locking ring 5 can be removed by pulling the steel wires when pouring is needed, and the conical blade 2 can be opened and closed. Simultaneously in order to prevent that toper leaf 2 and connecting sleeve 1 from droing, can be provided with lantern ring 6 at the fixed surface of toper leaf 2 and connecting sleeve 1, pass lantern ring 6 through the steel wire, when taking place to drop, can take out toper leaf 2 or connecting sleeve 1 from the pouring hole through pulling the steel wire, simultaneously, if take place toper leaf 2 can not normally open and shut and lead to the unable normal pouring of concrete, thereby can assist to open toper leaf 2 through pulling wire rope, of course lantern ring 6 can only set up on connecting sleeve 1 or toper leaf 2, also can all set up.
When secondary bottom sealing pouring is needed, the three conical leaves 2 are folded, the locking ring 5 is sleeved on the three locking ribs 4 and clamped, the two holes of the locking ring 5 are penetrated by thin steel wires, the length of the thin steel wires is not less than the height from the concrete surface in the holes to the hole opening, and the margin length of 3 meters is reserved. And (3) extracting the guide pipe from the pouring hole, replacing the blocked pipe joint, installing the secondary bottom sealing pouring device at the lowest end of the bottom joint of the guide pipe, pouring fresh concrete into the pipe, filling the concrete into the secondary bottom sealing pouring device, hanging the guide pipe of the bottom joint by a crane, lengthening the guide pipe at the orifice, continuing hanging the guide pipe until the bottom joint of the guide pipe is inserted into a range of 2m below the concrete surface, fixing the guide pipe, and installing a funnel at the top. The locking ring 5 is taken out of the guide pipe through the steel wire rope, then concrete is poured into the funnel, the conical blades 2 are opened under the impact of the concrete, the concrete can flow out of the bottom of the guide pipe, and the concrete is continuously poured until the design elevation is reached.
The conical design can effectively reduce the contact area of the front end of the guide pipe with mud and slurry in the hole, and can prevent the mud and slurry on the surface layer from entering the guide pipe in the process of quickly inserting the concrete, thereby effectively preventing the pile body from forming a broken pile due to the interlayer in the concrete. The success rate of secondary conduit insertion method filling pile or pile extension is improved, the pile breaking rate is reduced, the construction cost is saved, and the construction efficiency is improved.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (4)
1. The utility model provides a bore stake hole concrete secondary back cover pouring device which characterized in that includes:
a connecting sleeve, at least two conical leaves;
the conical leaves are spliced into a complete cone, and the bottom surface outline of the cone is consistent with the outline of the connecting sleeve and is in butt joint;
each conical leaf is pivotally connected with one end of the connecting sleeve and can be freely opened and closed;
further comprises: a locking ring and a locking rib;
one end of the locking rib is fixedly arranged on the inner side of the conical leaf, the other end of the locking rib is bent towards the radial direction of the connecting sleeve, and the bent ends of all the locking ribs are sleeved in the locking ring;
further comprises: a collar;
the lantern ring is fixedly arranged on the connecting sleeve and/or the outer wall of the conical blade.
2. The bored concrete secondary back cover filling apparatus as set forth in claim 1, further comprising:
a limiting block;
one end of the limiting block is fixedly arranged on the connecting side of the connecting sleeve and the conical leaf, the other side of the limiting block extends to the conical leaf part, and each conical leaf is correspondingly provided with one limiting block.
3. The bored concrete secondary backing filling apparatus of claim 1, wherein:
the conical leaves have three pieces.
4. The bored concrete secondary backing filling apparatus according to claim 3, wherein:
the conical leaves are connected with the connecting sleeve through hinges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810291978.6A CN108265724B (en) | 2018-03-30 | 2018-03-30 | Bored pile hole concrete secondary back cover pouring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810291978.6A CN108265724B (en) | 2018-03-30 | 2018-03-30 | Bored pile hole concrete secondary back cover pouring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108265724A CN108265724A (en) | 2018-07-10 |
| CN108265724B true CN108265724B (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810291978.6A Active CN108265724B (en) | 2018-03-30 | 2018-03-30 | Bored pile hole concrete secondary back cover pouring device |
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| CN112576210B (en) * | 2020-12-15 | 2022-11-04 | 中铁北京工程局集团有限公司 | Clear hole device of drilling bored concrete pile |
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| CN108265724A (en) | 2018-07-10 |
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