CN109732770B - Auxiliary positioning device and method for arc-shaped embedded sleeve - Google Patents
Auxiliary positioning device and method for arc-shaped embedded sleeve Download PDFInfo
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- CN109732770B CN109732770B CN201910145596.7A CN201910145596A CN109732770B CN 109732770 B CN109732770 B CN 109732770B CN 201910145596 A CN201910145596 A CN 201910145596A CN 109732770 B CN109732770 B CN 109732770B
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Abstract
The invention provides an auxiliary positioning device and method for an arc-shaped embedded sleeve, which comprises an end hole forming part, a first positioning block and a second positioning block; the end hole forming piece is connected with the first side die and used for forming an end hole; the first positioning block is connected with the end hole forming part and is used for being connected with one end of the arc-shaped embedded sleeve; and the second positioning block is connected with the second side die and is used for being connected with the other end of the arc-shaped embedded sleeve. Through the structure that adopts end hole forming part, first locating piece and second locating piece, fixed arc buried sleeve that can be reliable avoids arc buried sleeve to be pouring the displacement and the rotation of in-process, and the end hole forming part that sets up can shaping nut mounted position, gathers at subsequent process and need not cut arc buried sleeve's tip. The invention has strong operability: and the economy is good.
Description
Technical Field
The invention relates to the field of pouring construction of prefabricated components, in particular to an auxiliary positioning device and method for an arc-shaped embedded sleeve.
Background
In the current road construction, along with the higher and higher requirements of people on engineering construction, the assembled prefabricated part is widely applied by virtue of the advantages of short construction period, low cost, guaranteed quality, small influence on the surrounding environment and the like. The preferable scheme of assembling of assembled component is that the curved bolt passes through pre-buried arc sleeve pipe and connects fixedly, and the pre-buried sheathed tube of arc fixed mode is generally fixed on the template through the fixed mould at present stage, perhaps directly fixed on the steel reinforcement cage, and these methods can effective control pre-buried sheathed tube removal, but can't effective control arc pre-buried sheathed tube rotation, lead to pre-buried sheathed tube hole site although correct easily, inside has taken place to rotate, and the curved bolt can't be installed. Meanwhile, the appearance quality of concrete at the end part of the embedded member is not easy to control, and the end part of the embedded sleeve is cut, so that the construction process is more. To realize safe and reliable fixation of the arc-shaped embedded sleeve, no effective solution is available at present. After the assembly type component is poured, the end part of the embedded sleeve is easily covered by cement paste, more time is needed for finding and cleaning the position, the operation is troublesome, the end part of the embedded sleeve is easily damaged due to improper cleaning, the bolt head of the bent bolt is unevenly stressed, and the assembly quality is influenced. And the embedded hole is easy to be damaged by local hole collapse, and the assembled component is directly scrapped.
In the prior art, a solution to the technical problem is not found, and a reference solution is described in chinese patent document CN 201620602U. The flat steel hook comprises a sleeve body, wherein a flat steel traversing a port of the sleeve body is welded on the lower portion of the sleeve body, the flat steel is best welded in an inner cavity of the sleeve body, a round hole is formed in the middle of the flat steel and is connected with a hook head bolt, the hook head bolt comprises an upper screw rod portion and a lower arc hook portion, and an upper screw rod penetrates through the round hole of the flat steel and is hung on the upper plane of the flat steel through a nut. However, the later dismantling process of the scheme is troublesome, the flat steel needs to be cut off, and the arc-shaped sleeve is of a bent structure. And the position for installing the nut is required to be arranged at the end part of the arc-shaped sleeve. This solution cannot be implemented.
Disclosure of Invention
The invention aims to solve the technical problem of providing an auxiliary positioning device and method for an arc-shaped embedded sleeve, which can reliably fix the arc-shaped embedded sleeve, avoid the movement and rotation of the arc-shaped embedded sleeve and form a space for installing a nut. In a preferred scheme, demolding of the auxiliary positioning device is facilitated.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: an auxiliary positioning device for an arc-shaped embedded sleeve comprises an end hole forming part, a first positioning block and a second positioning block;
the end hole forming piece is connected with the first side die and used for forming an end hole;
the first positioning block is connected with the end hole forming part and is used for being connected with one end of the arc-shaped embedded sleeve;
and the second positioning block is connected with the second side die and is used for being connected with the other end of the arc-shaped embedded sleeve.
In a preferred scheme, in the end hole forming part, a plane part of the end hole forming part is used for being connected with the first side die, the end hole forming part further comprises a side surface part and a bottom surface part which are connected with the plane part, and the bottom surface part is fixedly connected with the first positioning block.
In a preferred scheme, the side surface part is arc-shaped or U-shaped, and the side surface part and the bottom surface part are used for forming the end head hole;
the bottom surface part is provided with an exhaust hole.
In a preferred scheme, a template connecting bolt is arranged on the plane part and penetrates through the first side die to be connected with a nut.
In the preferred scheme, the first positioning block and the second positioning block are provided with extending ends, and the extending ends are used for being inserted into the arc-shaped embedded sleeve and fixing the arc-shaped embedded sleeve.
In a preferred scheme, the extended end is of a through hole structure, and an axial crack is arranged on the extended end;
an expansion pin is also provided, the expansion pin is provided with a wedge-shaped end, and the inner wall of the extended end is provided with a thickened inner wall, so that when the expansion pin is inserted, the extended end is expanded outwards.
In a preferred scheme, a water-absorbing polymer ring is arranged at the contact position between the expansion pin and the first positioning block and used for blocking the penetration of cement slurry.
In the preferred scheme, an end plate for pre-embedding is further arranged, the end plate is connected with the bottom surface, and the end plate is sleeved outside the end extending from the first positioning block;
a water-absorbing polymer layer is arranged between the end plate and the bottom surface part.
In the preferred scheme, two bolt lug plates are fixedly arranged on the second side die on two sides of the second positioning block, a compression bolt penetrates through the bolt lug plates to be connected with a nut, and a wedge-shaped plate used for fixing the second positioning block is arranged between the compression bolt and the second positioning block.
A construction method adopting the auxiliary positioning device for the arc-shaped embedded sleeve comprises the following steps:
s1, fixing the end socket hole forming piece on the first side die through a template connecting bolt;
s2, inserting one end of the arc-shaped embedded sleeve into a first positioning block connected with the end hole forming piece;
s3, inserting the extending end of the second positioning block into the second side die and fixing, and inserting the other end of the arc-shaped embedded sleeve into the extending end of the second positioning block;
the positioning and fixing of the arc-shaped embedded sleeve before the pouring of the prefabricated part are realized through the steps.
According to the auxiliary positioning device and method for the arc-shaped embedded sleeve, the structure of the end hole forming piece, the first positioning block and the second positioning block is adopted, the arc-shaped embedded sleeve can be reliably fixed, the arc-shaped embedded sleeve is prevented from being displaced and rotated in the pouring process, the arranged end hole forming piece can form the installation position of the nut, and the end part of the arc-shaped embedded sleeve does not need to be cut in the subsequent process summary. In the preferred scheme, the structure of the expansion pin that sets up, reinforcing arc buried sleeve that can be further and the locating piece between the power of being connected avoids leading to arc buried sleeve to shift or rotate at concrete placement and vibration in-process to lead to prefabricated component to scrap. The end board that sets up can be pre-buried at the end of arc buried sleeve pore-forming for bear the pulling force of bent bolt, avoid the pore to damage. The structure on water-absorbing polymer ring and water-absorbing polymer layer can realize the inflation in pouring the in-process, the water in the absorption concrete, avoids later stage concrete initial set back drawing of patterns difficulty.
The device and the method have the technical advantages of strong operability, good economy and the like: 1. the operability is strong: the method is not much different from the traditional embedded casing flow, can be operated without professional training, and has lower operation difficulty. 2. Good economical efficiency: the invention has simple required mould and low processing difficulty, can improve the finished product rate of the prefabricated components, such as the prefabricated box culvert, improves the splicing and mounting efficiency of the prefabricated box culvert and has good economic benefit.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic structural view of an auxiliary positioning device according to the present invention.
FIG. 2 is a schematic top view of an end hole molding of the present invention.
FIG. 3 is a side view of an end hole forming member of the present invention.
Fig. 4 is an enlarged partial view of the expansion pin of the present invention in connection with a locating block.
FIG. 5 is a schematic view of a bent bolt connection after hole formation using the apparatus and method of the present invention.
In the figure: the end hole forming part comprises an end hole forming part 1, a plane part 101, a side part 102, a bottom part 103, a template connecting bolt 2, an exhaust hole 3, a first positioning block 4, an axial crack 41, an thickened inner wall 42, an arc-shaped embedded sleeve 5, a first side die 6, a second side die 7, a second positioning block 8, a wedge plate 9, a compression bolt 10, a bolt lug plate 11, an expansion pin 12, a water-absorbing polymer ring 121, an expansion pin pull ring 122, an end plate 13, a water-absorbing polymer layer 14, a first prefabricated part 15, a second prefabricated part 16, a bent bolt 17, a fixing nut 18 and an end hole 19.
Detailed Description
Example 1:
as shown in fig. 1 to 3, an auxiliary positioning device for an arc-shaped embedded sleeve comprises a terminal hole forming member 1, a first positioning block 4 and a second positioning block 8;
the end hole forming piece 1 is connected with the first side die 6, and the end hole forming piece 1 is used for forming an end hole 19;
the first positioning block 4 is connected with the end hole forming part 1, and the first positioning block 4 is used for being connected with one end of the arc-shaped embedded sleeve 5;
the second positioning block 8 is connected with the second side die 7, and the second positioning block 8 is used for being connected with the other end of the arc-shaped embedded sleeve 5. According to the scheme, the arc-shaped embedded sleeve 5 can be reliably fixed, and the end hole forming part 1, the first positioning block 4 and the second positioning block 8 can be conveniently taken out after the die is disassembled at the later stage, so that the accuracy of the hole position of the bent bolt 17 is ensured.
Preferably, as shown in fig. 2 and 3, in the end hole molded part 1, the planar portion 101 of the end hole molded part 1 is used for connecting with the first side die 6, and further includes a side portion 102 and a bottom portion 103 connected with the planar portion 101, and the bottom portion 103 is fixedly connected with the first positioning block 4.
In a preferred embodiment, the side surface part 102 is arc-shaped or U-shaped, and the side surface part 102 and the bottom surface part 103 are used for forming the terminal hole 19; with this construction, a horseshoe-shaped head hole 19 is formed in the surface of the prefabricated part after removal for receiving the nut.
As shown in fig. 2, the bottom surface 103 is provided with a vent hole 3. The structure is used for exhausting air during pouring.
In a preferred scheme, as shown in fig. 1 to 3, a formwork connecting bolt 2 is arranged on a plane part 101, and the formwork connecting bolt 2 penetrates through a first side die 6 to be connected with a nut.
In a preferred embodiment, as shown in fig. 1 and 2, the first positioning block 4 and the second positioning block 8 are provided with extending ends, and the extending ends are used for being inserted into the arc-shaped embedded sleeve 5 and fixing the arc-shaped embedded sleeve 5. The extended end is inserted into the arc embedding sleeve 5 by at least 5cm in the embodiment.
In a preferred scheme, as shown in fig. 3 and 4, the extended end is in a through hole structure, and an axial slit 41 is arranged at the extended end;
an expansion pin 12 is also provided, the expansion pin 12 being provided with a wedge shaped end and a thickened inner wall 42 at the inner wall of the extended end so that the extended end expands outwardly when the expansion pin 12 is inserted. In some situations, the extension ends of the first positioning block 4 and the second positioning block 8 are still not enough to limit the rotation of the arc-shaped embedded sleeve 5. The expansion pin 12 that sets up can insert in the extension end through-hole of first locating piece 4 and second locating piece 8, makes the extension end expand to reliably fix arc buried sleeve 5, avoid arc buried sleeve 5's rotation.
In a preferred embodiment, as shown in fig. 3, a water-absorbent polymer ring 121 is provided at the contact position between the expansion pin 12 and the first spacer 4 to block the penetration of cement slurry. Set up the scheme of expansion pin 12, brought new technical problem, because the combination that extends end and arc buried sleeve 5 is tighter, and in pouring the in-process, grout can enter into end hole formed part 1 from exhaust hole 3, and this has caused taking out of expansion pin 12 very difficult, and the space in this position is less, and the operation is also inconvenient. Thereby affecting the overall stripping of the end hole profile 1. The water-absorbing polymer ring 121 is arranged to absorb water in cement slurry during casting, so that the cement slurry is fully expanded, and the following effects are achieved: the expansion pin 1 is expanded by absorbing moisture, so that a gap between the expansion pin 12 and the first positioning block 4 is blocked, cement paste cannot enter, and the separation between the expansion pin 12 and the first positioning block 4 is facilitated in the later period. 2 is to facilitate detachment by absorbing water to incompletely hydrate the adjacent cement paste. The expansion pin 12 and the first positioning block 4 are mutually repelled due to expansion by absorbing moisture 3, thereby further facilitating the later demoulding. An expansion pin 12 is also connected to the second positioning block 8.
Preferably, as shown in fig. 4, an expansion pin pull ring 122 is provided on the top of the expansion pin 12 to facilitate removal of the expansion pin by pulling.
In a preferable scheme, an end plate 13 for pre-embedding is further arranged, the end plate 13 is connected with the bottom surface part 103, and the end plate 13 is sleeved outside an extending end of the first positioning block 4; preferably, the bottom of the end plate 13 is further provided with a plurality of pins for improving the bonding force between the end plate 13 and the concrete. The end plate 13 is arranged to better withstand the pulling force of the bent bolt 17.
A water-absorbent polymer layer 14 is provided between the end plate 13 and the bottom surface 103. The technical effect of the water-absorbent polymer layer 14 and the water-absorbent polymer ring 121 is the same. The water-absorbent polymer in this example is a composition containing a polyacrylic acid-based water-absorbent resin powder, for example, polyacrylamide-Al gel particles, and the balance is a water-permeable binder. The prior art usually adopts a release agent, but the release agent can not prevent the curing of the cement slurry entering the end hole forming piece 1, and partial cement slurry permeates between the expansion pin 12 and the positioning block to cause separation difficulty, and the scheme adopting the water-absorbent polymer perfectly solves the problem.
In the preferred scheme, two bolt lug plates 11 are fixedly arranged on the second side die 7 on two sides of the second positioning block 8, a compression bolt 10 penetrates through the bolt lug plates 11 to be connected with a nut, and a wedge-shaped plate 9 for fixing the second positioning block 8 is arranged between the compression bolt 10 and the second positioning block 8. With this structure, the second positioning block 8 is fixed conveniently.
Example 2:
a construction method adopting the auxiliary positioning device for the arc-shaped embedded sleeve comprises the following steps:
s1, fixing the end socket hole forming piece 1 on the first side die 6 through the template connecting bolt 2;
preferably, the end plate 13 is sleeved on the end plate 13 at the extending end of the first positioning block 4, and the end plate 13 is adhered to the bottom surface of the end hole forming piece 1 through the water-absorbing polymer layer 14.
S2, inserting one end of an arc-shaped embedded sleeve 5 into a first positioning block 4 connected with the end hole forming piece 1;
preferably, the expansion pin 12 is inserted into the through hole of the first positioning block 4 to expand the extension end. The arc-shaped embedded sleeve 5 is tightly plugged.
S3, inserting the extending end of the second positioning block 8 into the second side die 7 and fixing, and inserting the other end of the arc-shaped embedded sleeve 5 into the extending end of the second positioning block 8; and inserting the expansion pin 12 into the through hole of the second positioning block 8 to expand the extension end. The arc-shaped embedded sleeve 5 is tightly plugged.
The compression bolt 10 penetrates through the bolt lug plate 11 to be connected with the nut, and the wedge plate 9 is inserted between the compression bolt 10 and the second positioning block 8, so that the wedge plate 9 compresses the second positioning block 8.
The positioning and fixing of the arc-shaped embedded sleeve 5 before the pouring of the prefabricated part are realized through the steps.
And S4, after die assembly, pouring concrete, vibrating, performing steam curing, and after the setting period is reached, taking down the wedge-shaped plate 9, taking down the compression bolt 10, taking out the expansion pin 12, and removing the second positioning block 8. The fixing nut on the first side mold 6 is then removed. The first side die 6 and the second side die 7 are dismantled, the expansion pin pull ring 122 at the top of the expansion pin 12 in the end hole forming piece 1 is hooked by a hook with a steel wire rope, the expansion pin 12 is pulled out, and due to the effect of the water-absorbing polymer ring 121, nearby cement paste is insufficiently hydrated and is easy to separate. And the expansive force of the water-absorbent polymer ring 121 can assist the separation. The end hole molding 1 is then removed, and the bottom surface portion 103 of the end hole molding 1 is easily separated from the end plate 13 due to the water absorbing and swelling effect of the water-absorbent polymer layer 14, thereby completing the molding of the entire bent bolt. The device and the method have high hole forming quality and are convenient for successfully finishing the subsequent bent bolt connection.
The above-described embodiments are merely preferred technical solutions of the present invention, and should not be construed as limitations of the present invention, and technical features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (7)
1. The utility model provides an arc buried sleeve auxiliary positioning device which characterized by: the device comprises an end hole forming part (1), a first positioning block (4) and a second positioning block (8); the end hole forming piece (1) is connected with the first side die (6), and the end hole forming piece (1) is used for forming an end hole (19); the first positioning block (4) is connected with the end hole forming part (1), and the first positioning block (4) is used for being connected with one end of the arc-shaped embedded sleeve (5); the second positioning block (8) is connected with the second side die (7), and the second positioning block (8) is used for being connected with the other end of the arc-shaped embedded sleeve (5);
in the end hole forming part (1), a plane part (101) of the end hole forming part (1) is used for being connected with a first side die (6), the end hole forming part also comprises a side surface part (102) and a bottom surface part (103) which are connected with the plane part (101), and the bottom surface part (103) is fixedly connected with a first positioning block (4);
the first positioning block (4) and the second positioning block (8) are provided with extending end heads which are used for being inserted into the arc-shaped embedded sleeve (5) and fixing the arc-shaped embedded sleeve (5);
the extending end is of a through hole structure, and an axial crack (41) is arranged on the extending end;
an expansion pin (12) is also provided, the expansion pin (12) having a wedge-shaped end, and a thickened inner wall (42) is provided on the inner wall of the extended end so that the extended end expands outwardly when the expansion pin (12) is inserted.
2. The auxiliary positioning device for the arc-shaped embedded sleeves according to claim 1, which is characterized in that: the side surface part (102) is arc-shaped or U-shaped, and the side surface part (102) and the bottom surface part (103) are used for forming the end hole (19); the bottom surface part (103) is provided with an exhaust hole (3).
3. The auxiliary positioning device for the arc-shaped embedded sleeves according to claim 1, which is characterized in that: the plane part (101) is provided with a template connecting bolt (2), and the template connecting bolt (2) penetrates through the first side die (6) to be connected with a nut.
4. The auxiliary positioning device for the arc-shaped embedded sleeves according to claim 1, which is characterized in that: and a water-absorbing polymer ring (121) is arranged at the contact position between the expansion pin (12) and the first positioning block (4) and is used for blocking the infiltration of cement slurry.
5. The auxiliary positioning device for the arc-shaped embedded sleeve according to any one of claims 1 to 4, which is characterized in that: the end plate (13) is also arranged for pre-embedding, the end plate (13) is connected with the bottom surface part (103), and the end plate (13) is sleeved outside the extending end of the first positioning block (4); a water-absorbing polymer layer (14) is provided between the end plate (13) and the bottom surface part (103).
6. The auxiliary positioning device for the arc-shaped embedded sleeve according to any one of claims 1 to 4, which is characterized in that: two bolt ear plates (11) are fixedly arranged on the second side die (7) on two sides of the second positioning block (8), a compression bolt (10) penetrates through the bolt ear plates (11) to be connected with a nut, and a wedge-shaped plate (9) used for fixing the second positioning block (8) is arranged between the compression bolt (10) and the second positioning block (8).
7. A construction method adopting the arc embedded sleeve auxiliary positioning device as claimed in any one of claims 1 to 6 is characterized by comprising the following steps:
s1, fixing the end socket hole forming piece (1) on the first side mould (6) through a template connecting bolt (2); s2, inserting one end of the arc-shaped embedded sleeve (5) into a first positioning block (4) connected with the end hole forming piece (1); s3, inserting the extending end of the second positioning block (8) into the second side die (7) and fixing, and inserting the other end of the arc-shaped embedded sleeve (5) into the extending end of the second positioning block (8); the positioning and fixing of the arc-shaped embedded sleeve (5) before the pouring of the prefabricated part are realized through the steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910145596.7A CN109732770B (en) | 2019-02-27 | 2019-02-27 | Auxiliary positioning device and method for arc-shaped embedded sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910145596.7A CN109732770B (en) | 2019-02-27 | 2019-02-27 | Auxiliary positioning device and method for arc-shaped embedded sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109732770A CN109732770A (en) | 2019-05-10 |
| CN109732770B true CN109732770B (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910145596.7A Active CN109732770B (en) | 2019-02-27 | 2019-02-27 | Auxiliary positioning device and method for arc-shaped embedded sleeve |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005033148A1 (en) * | 2005-07-13 | 2007-01-25 | Frank Prochiner | Assembly housing for concrete construction for effective installing of insert components varied connecting possibilities for reinforcement connections, threaded connections and empty conduit connections depending upon requirement |
| CN201620602U (en) * | 2010-03-18 | 2010-11-03 | 江苏弘盛建设工程集团有限公司 | Preburied sleeve |
| CN108678369A (en) * | 2018-06-01 | 2018-10-19 | 中建二局第建筑工程有限公司 | Pre-buried under aluminum dipping form system wears beam casing pipe and its application method |
| CN209718157U (en) * | 2019-02-27 | 2019-12-03 | 中交第二航务工程局有限公司 | Arc service sleeve auxiliary locator |
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Effective date of registration: 20210331 Address after: 116000 1 / F, no.38-7-1, Jinyao Road, Dalian Economic and Technological Development Zone, Dalian pilot Free Trade Zone, Liaoning Province Patentee after: CCCC SHEC MUNICIPAL CONSTRUCTION Co.,Ltd. Address before: No.11, Dongxihu Road, Jinyinhu District, Wuhan City, Hubei Province Patentee before: The Second Harbor Engineering Co. Patentee before: CCCC SHEC MUNICIPAL CONSTRUCTION Co.,Ltd. |