CN214401375U - Temporary support of prefabricated box girder - Google Patents
Temporary support of prefabricated box girder Download PDFInfo
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- CN214401375U CN214401375U CN202022252782.1U CN202022252782U CN214401375U CN 214401375 U CN214401375 U CN 214401375U CN 202022252782 U CN202022252782 U CN 202022252782U CN 214401375 U CN214401375 U CN 214401375U
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Abstract
The utility model provides a temporary support of prefabricated case roof beam belongs to prefabricated case roof beam installation auxiliary assembly technical field. This temporary support includes the box, is provided with wedge and lower wedge in the box, goes up wedge sliding connection under on the wedge, is provided with first bolt and second bolt on the box, first bolt threaded connection on the box, the screw rod of first bolt can lean on with last wedge counterbalance, the second bolt is connected with lower wedge, the second bolt is worn to establish on the box and can follow the axial displacement of second bolt, this temporary support still includes the mounting that can advance line location to the second bolt. The temporary support is convenient and safe to operate, economical and practical, and can well complete system conversion under the condition of ensuring quality.
Description
Technical Field
The utility model belongs to the technical field of prefabricated box girder installation auxiliary assembly, a temporary support of prefabricated box girder is related to.
Background
With the rapid development of the infrastructure of China in recent years, the construction of the bridge is also rapidly developed, the bridge is generally constructed by a construction method of simply supporting firstly and continuously then, the construction method of simply supporting firstly and continuously then means that a temporary support is arranged at the top of a pier firstly, and then a prefabricated box girder and a T-shaped girder are erected on the temporary support. After the processes of wet joint, wet hinge joint, hogging moment tensioning, grouting and the like are completed, the temporary support is dismantled, and the conversion from a simple support to a continuous structure system is completed.
In the prior art, wood and bricks are used as temporary supports, and the temporary supports are dismounted, so that construction is difficult to realize; the sand cylinder and the sand box are used as temporary supports, so that the following problems are easily caused: 1. if the fine sand in the sand cylinder is soaked by rainwater, the fine sand is difficult to discharge, and the aim of unloading the bracket cannot be achieved; 2. a screw hole is reserved at the bottom of the side face of the sand cylinder and is blocked by a screw, the sand discharge port is a screw hole, and if fine sand is mixed into screw teeth of the screw hole, the screw is difficult to screw, so that the aim of unloading the support cannot be achieved; 3. the preparation is complex, the requirement on sand is high, standard sand is adopted, and if natural sand is adopted, the standard sand needs to be sieved by a 0.25-0.5 mm sieve, washed by water and dried in the sun to ensure the flowing property of the sand.
Therefore, the temporary support in the prior art is difficult to realize the conversion of a complete system which is safe, economical, convenient and ensures the quality.
Disclosure of Invention
The utility model discloses to the above-mentioned problem that prior art exists, provide a temporary support of prefabricated case roof beam, the utility model aims to solve the technical problem that: how to conveniently and safely complete the conversion of the system.
The purpose of the utility model can be realized by the following technical proposal:
the utility model provides a temporary support of prefabricated box girder, includes the box, its characterized in that, be provided with wedge and lower wedge in the box, go up wedge sliding connection in on the lower wedge, be provided with first bolt and second bolt on the box, first bolt threaded connection in on the box, the screw rod of first bolt can with go up the wedge and offset and lean on, the second bolt with lower wedge is connected, the second bolt is worn to establish and can follow the axial displacement of second bolt on the box, this temporary support still includes the mounting that can go on fixing a position the second bolt.
The working principle is as follows: the screw rod of first bolt can lean on the one side of leaning on at last wedge, the second bolt links to each other with lower wedge, lower wedge can remove in the box, during the construction, steel sheet and concrete block are placed on last wedge, rotatory first bolt, the screw rod that makes first bolt promotes and goes up the wedge and slide on lower wedge, remove wedge down simultaneously, reach suitable position after, insert the box with the mounting, fix the second bolt, the lower wedge has also been fixed simultaneously, after connecting steel sheet and concrete block and fixing to the bridge on, loosen first bolt, the height of wedge is gone up in the change, lift off the temporary support, complete the body system conversion. The temporary support is convenient and safe to operate, economical and practical, and can well complete system conversion under the condition of ensuring quality.
In the temporary support of the precast box girder, a through hole is formed in the box body, the second bolt penetrates through the through hole, the fixing part comprises a sleeve, and the sleeve is sleeved on a screw rod of the second bolt and can fix the second bolt in the through hole.
The inner diameter of the through hole is larger than the outer diameter of the second bolt, and the sleeve is inserted into the through hole and fixes the second bolt.
In the temporary support for the precast box girder, a nut is connected to the second bolt in a threaded manner, and the nut is located outside the sleeve. The nut is rotated to abut against the sleeve, so that the sleeve can be positioned.
In the temporary support for the precast box girder, the box body is square, the box body is provided with four side walls, the first bolt and the second bolt are respectively arranged on one side wall of the box body, and the side wall where the first bolt is arranged is opposite to the side wall where the second bolt is arranged.
In the above-described temporary support for a precast box girder, the box body is made of iron or steel. The box body made of iron or steel has higher strength, can ensure the construction quality and improve the safety.
Compared with the prior art, the utility model has the advantages as follows:
the temporary support is convenient and safe to operate, economical and practical, and can well complete system conversion under the condition of ensuring quality.
Drawings
FIG. 1 is a schematic structural view of the present temporary support;
FIG. 2 is a schematic view of the structure with concrete blocks placed on the temporary support;
fig. 3 is a top view of the temporary support.
In the figure, 1 a box body; 2, wedge blocks are arranged; 3, a wedge block is arranged; 4 a first bolt; 5 a second bolt; 6, a nut; 7 side walls; 8, steel plates; 9 concrete blocks; 10 sleeve.
Detailed Description
The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1-3, this temporary support includes box 1, be provided with wedge 2 and lower wedge 3 in the box 1, go up wedge 2 sliding connection on wedge 3 down, be provided with first bolt 4 and second bolt 5 on the box 1, first bolt 4 threaded connection is on box 1, the screw rod of first bolt 4 can offset with last wedge 2 and lean on, second bolt 5 is connected with lower wedge 3, second bolt 5 wears to establish on box 1 and can follow the axial displacement of second bolt 5, this temporary support still includes the mounting that can advance line location to second bolt 5.
The screw rod of first bolt 4 can lean on the one side of last wedge 2, second bolt 5 links to each other with lower wedge 3, lower wedge 3 can remove in box 1, during the construction, steel sheet 8 and concrete block 9 are placed on last wedge 2, rotatory first bolt 4, make the screw rod of first bolt 4 promote to go up wedge 2 and slide on lower wedge 3, remove lower wedge 3 simultaneously, reach suitable position after, insert the mounting in box 1, fix second bolt 5, lower wedge 3 has also been fixed simultaneously, after connecting steel sheet 8 and concrete block 9 and fixing to the bridge, loosen first bolt 4, change the height of last wedge 2, lift off interim support, complete the system conversion.
As shown in fig. 1, in this embodiment, a through hole is formed in the box body 1, the second bolt 5 passes through the through hole, the fixing member includes a sleeve 10, and the sleeve 10 is sleeved on a screw rod of the second bolt 5 and can fix the second bolt 5 in the through hole. The inner diameter of the through hole is larger than the outer diameter of the second bolt 5, and the sleeve 10 is inserted into the through hole and fixes the second bolt 5.
In the present embodiment, as shown in fig. 1, a nut 6 is screwed to the second bolt 5, and the nut 6 is located outside the sleeve 10. The nut 6 is rotated to abut against the sleeve 10, and the sleeve 10 can be positioned.
As shown in fig. 3, in the present embodiment, the box body 1 is square, the box body 1 has four side walls 7, the first bolt 4 and the second bolt 5 are respectively disposed on one side wall 7 of the box body 1, and the side wall 7 where the first bolt 4 is located is opposite to the side wall 7 where the second bolt 5 is located.
Preferably, the tank 1 is made of iron or steel. The box body 1 made of iron or steel has higher strength, can ensure the construction quality and improve the safety.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. The utility model provides a temporary support of precast box girder, includes box (1), its characterized in that, be provided with wedge (2) and lower wedge (3) in box (1), go up wedge (2) sliding connection in on lower wedge (3), be provided with first bolt (4) and second bolt (5) on box (1), first bolt (4) threaded connection in on box (1), the screw rod of first bolt (4) can with go up wedge (2) counterbalance and lean on, second bolt (5) with lower wedge (3) are connected, second bolt (5) are worn to establish on box (1) and can follow the axial displacement of second bolt (5), this temporary support still includes the mounting that can fix a position second bolt (5).
2. The temporary support of the precast box girder according to claim 1, wherein the box body (1) is provided with a through hole, the second bolt (5) passes through the through hole, the fixing member comprises a sleeve (10), and the sleeve (10) is sleeved on a screw rod of the second bolt (5) and can fix the second bolt (5) in the through hole.
3. A temporary support of precast box girders according to claim 2 characterized in that nuts (6) are screwed on the second bolts (5), the nuts (6) being located outside the sleeves (10).
4. A temporary support for precast box girders according to claim 1, characterized in that the box body (1) is square, the box body (1) has four side walls (7), the first bolt (4) and the second bolt (5) are respectively arranged on one side wall (7) of the box body (1), and the side wall (7) where the first bolt (4) is located is opposite to the side wall (7) where the second bolt (5) is located.
5. A temporary support of precast box girders according to claim 1 characterized in that the box body (1) is made of iron or steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022252782.1U CN214401375U (en) | 2020-10-10 | 2020-10-10 | Temporary support of prefabricated box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022252782.1U CN214401375U (en) | 2020-10-10 | 2020-10-10 | Temporary support of prefabricated box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214401375U true CN214401375U (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022252782.1U Active CN214401375U (en) | 2020-10-10 | 2020-10-10 | Temporary support of prefabricated box girder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114808726A (en) * | 2022-05-13 | 2022-07-29 | 中铁一局集团(广州)建设工程有限公司 | Temporary support device for precast beam system conversion |
-
2020
- 2020-10-10 CN CN202022252782.1U patent/CN214401375U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114808726A (en) * | 2022-05-13 | 2022-07-29 | 中铁一局集团(广州)建设工程有限公司 | Temporary support device for precast beam system conversion |
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