CN218227177U - Precast box girder pedestal - Google Patents
Precast box girder pedestal Download PDFInfo
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- CN218227177U CN218227177U CN202222116371.9U CN202222116371U CN218227177U CN 218227177 U CN218227177 U CN 218227177U CN 202222116371 U CN202222116371 U CN 202222116371U CN 218227177 U CN218227177 U CN 218227177U
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- box girder
- reinforced concrete
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Abstract
The utility model discloses a precast box girder pedestal, which belongs to the technical field of assembly type buildings and comprises a reinforced concrete fixed mould platform, wherein the upper parts of the two ends of the reinforced concrete fixed mould platform are provided with notches, the notches are provided with steel structure mould platforms, and hoisting gaps are arranged between the steel structure mould platforms and the reinforced concrete fixed mould platforms; the steel structure mould platform comprises a steel structure base and a liftable mould platform which is arranged on the steel structure base and driven by a height adjusting mechanism, and the upper surface of the liftable mould platform can be flush with the upper surface of the reinforced concrete fixed mould platform. The utility model provides a precast box girder pedestal adopts the pedestal of reinforced concrete combination, has protected precast box girder segment portion not influenced by stretch-draw and broken, has guaranteed the production quality of precast box girder.
Description
Technical Field
The utility model belongs to the technical field of the assembly type structure, especially, relate to a precast box girder pedestal.
Background
The prefabricated building refers to a building which is formed by prefabricating and finishing part or all of components of the building in a factory, then transporting the components to a construction site, and assembling the components in a reliable connection mode. Among them, the precast box girder is generally used in a bridge.
The precast box girder is a bending member which is prefabricated in advance by tensioning the prestressed reinforcement and then is transported to a construction site for installation. The prefabricated box girder pedestal is a basic platform in the process of producing the prefabricated box girder and is used for supporting the whole weight of the unformed box girder and ensuring that the box girder is in a horizontal position in the forming process, so that the formed box girder has uniform mechanical strength.
At present, the prefabricated box girder pedestal in the prior art generally adopts the reinforced concrete pedestal as a whole. When the prefabricated box girder is tensioned, the end part of the prefabricated box girder is stressed downwards to be contacted with the pedestal, so that the end part of the box girder is easily broken due to the tensioning influence, and the production quality of the prefabricated box girder is influenced.
Therefore, in the assembly type building technical field, there is still a need for research and improvement on the prefabricated box girder pedestal, which is also a research focus and a focus in the current assembly type building technical field, and more the present invention is a starting point to be completed.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model discloses the technical problem that solve is: the utility model provides a precast box girder pedestal to solve current precast box girder in process of production, box girder tip receives stretch-draw influence and broken technical problem.
In order to solve the technical problem, the technical scheme of the utility model is that: a prefabricated box girder pedestal comprises a reinforced concrete fixed die table, wherein gaps are formed in the upper portions of two ends of the reinforced concrete fixed die table, a steel structure die table is arranged at the gaps, and a hoisting gap is formed between the steel structure die table and the reinforced concrete fixed die table; the steel structure mould platform comprises a steel structure base and a liftable mould platform which is arranged on the steel structure base and driven by a height adjusting mechanism, and the upper surface of the liftable mould platform can be flush with the upper surface of the reinforced concrete fixed mould platform.
As an improvement, the upper portion of steel construction base has the backup pad, height adjustment mechanism including install in a plurality of adjusting screw in backup pad and interval distribution, every adjusting screw is located the equal threaded connection in upper and lower both sides of backup pad has the nut, adjusting screw's upper end support lean on in but lifting die platform.
As a further improvement, the steel structure base comprises two longitudinal channel steels arranged in parallel and a plurality of transverse channel steels welded between the two longitudinal channel steels, and the supporting plate is an upper web plate of the longitudinal channel steels.
As an improvement, a first template is arranged on the upper surface of the reinforced concrete fixed die table, a second template is arranged on the upper surface of the liftable die table, a third template is arranged between the first template and the second template, and the third template is lapped between the upper surface of the reinforced concrete fixed die table and the upper surface of the liftable die table and is positioned above the hoisting gap.
As a further improvement, the first template, the second template and the third template are all stainless steel templates.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
the utility model provides a prefabricated box girder pedestal, because the steel structure mould platform has been designed at the both ends of reinforced concrete fixed mould platform, the steel structure mould platform includes the steel structure base and locates the liftable mould platform driven by the height adjustment mechanism on the steel structure base, like this when producing the prefabricated box girder, adjust the height of the liftable mould platform to flush with the height of the reinforced concrete fixed mould platform through the height adjustment mechanism, carry on the pouring of the prefabricated box girder concrete again; after the concrete reaches a certain strength, before tensioning, the height of the liftable mould platform is adjusted to be lower than that of the reinforced concrete fixed mould platform through the height adjusting mechanism, so that when tensioning is carried out, the problem that the end part of the box girder is broken due to the influence of tensioning is avoided because the end part of the prefabricated box girder is separated from the liftable mould platform, and the production quality of the prefabricated box girder is ensured. The utility model provides a precast box girder pedestal adopts the pedestal of reinforced concrete combination, has protected precast box beam ends not influenced by stretch-draw and broken, has guaranteed the production quality of precast box girder.
Because height adjustment mechanism includes a plurality of adjusting screw, every adjusting screw is located the equal threaded connection in upper and lower both sides of backup pad and has the nut, and adjusting screw's upper end supports and leans on in liftable mould platform, uses adjusting screw and nut to adjust the height of liftable mould platform like this for height adjustment mechanism is with low costs.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, proportion, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, proportion relation change or size adjustment still falls within the scope which can be covered by the technical content disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic structural view of a precast box girder pedestal provided by the present invention (a third formwork is in a disassembled state);
FIG. 2 is an enlarged view of a portion A of FIG. 1;
in the figure: 1. fixing the mould table by reinforced concrete; 2. a steel structure mold table; 21. a steel structure base; 211. longitudinal channel steel; 2111. a support plate; 212. transverse channel steel; 22. a height adjustment mechanism; 221. adjusting the screw rod; 222. a nut; 23. the mould platform can be lifted; 3. hoisting the clearance; 4. a first template; 5. a second template; 6. and a third template.
Detailed Description
The present invention is described in detail with reference to the specific embodiments, and other advantages and effects of the present invention will be apparent to those skilled in the art from the disclosure herein. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present specification, the terms "front", "rear", "left", "right", "inner", "outer", "middle", "longitudinal" and "lateral" are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.
As shown in fig. 1 and 2, the precast box girder pedestal comprises a reinforced concrete fixed mold table 1, wherein the upper parts of two ends of the reinforced concrete fixed mold table 1 are provided with gaps, a steel structure mold table 2 is arranged at the gap, and a hoisting gap 3 is arranged between the steel structure mold table 2 and the reinforced concrete fixed mold table 1; the steel structure mold platform 2 comprises a steel structure base 21 and a liftable mold platform 23 arranged on the steel structure base 21 and driven by a height adjusting mechanism 22, and the upper surface of the liftable mold platform 23 can be flush with the upper surface of the reinforced concrete fixed mold platform 1.
In the utility model discloses in a specific implementation of embodiment, in order to reduce height adjustment mechanism 22's cost, steel structure base 21's upper portion has backup pad 2111, height adjustment mechanism 22 is including installing in backup pad 2111 and interval distribution's a plurality of adjusting screw 221, every adjusting screw 221 is located the equal threaded connection in upper and lower both sides of backup pad 2111 and has nut 222, adjusting screw 221's upper end is supported and is leaned on in liftable mould platform 23, use adjusting screw 221 and nut 222 can adjust liftable mould platform 23's height like this. Of course, as an alternative, the height adjusting mechanism 22 may also be a hydraulic cylinder, etc., which is well known to those skilled in the art and will not be described herein.
The utility model discloses in a concrete implementation of embodiment, steel construction base 21 includes two parallel arrangement's vertical channel-section steel 211 and welds a plurality of horizontal channel-section steel 212 between two vertical channel-section steel 211, and backup pad 2111 is the last web of vertical channel-section steel 211. In this embodiment, the liftable die table 23 is also formed by welding channel steel.
The utility model discloses in a concrete implementation mode of embodiment, the upper surface of reinforced concrete fixed die platform 1 is provided with first template 4, and the upper surface of liftable die platform 23 is provided with second template 5, is provided with third template 6 between first template 4 and the second template 5, and 6 laps of third template just are located the top in hoist and mount clearance 3 between the upper surface of reinforced concrete fixed die platform 1 and the upper surface of liftable die platform 23.
In order to prolong the service life of the first template 4, the second template 5 and the third template 6, the first template 4, the second template 5 and the third template 6 are made of stainless steel templates.
When the prefabricated box girder is produced, the height of the liftable die table 23 is adjusted to be flush with the height of the reinforced concrete fixed die table 1 through the height adjusting mechanism 22, and then the prefabricated box girder concrete is poured; after the concrete reaches a certain strength, before tensioning, the height of the liftable die table 23 is adjusted to be lower than that of the reinforced concrete fixed die table 1 through the height adjusting mechanism 22, so that when tensioning is carried out, the problem that the end part of the box girder is broken due to tensioning influence is avoided because the end part of the box girder is separated from the liftable die table 23, and the production quality of the prefabricated box girder is ensured.
To sum up, the utility model provides a precast box girder pedestal adopts the pedestal of reinforced concrete combination, has protected precast box girder segment not influenced by stretch-draw and broken, has guaranteed the production quality of precast box girder.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of this invention without departing from the spirit thereof.
Claims (5)
1. A precast box girder pedestal is characterized by comprising a reinforced concrete fixed die table, wherein the upper parts of two ends of the reinforced concrete fixed die table are provided with notches, a steel structure die table is arranged at the notches, and a hoisting gap is arranged between the steel structure die table and the reinforced concrete fixed die table; the steel structure mould platform comprises a steel structure base and a liftable mould platform arranged on the steel structure base and driven by a height adjusting mechanism, and the upper surface of the liftable mould platform can be flush with the upper surface of the reinforced concrete fixed mould platform.
2. The precast box girder pedestal of claim 1, wherein a support plate is arranged at the upper part of the steel structure base, the height adjusting mechanism comprises a plurality of adjusting screws which are arranged on the support plate and distributed at intervals, nuts are respectively connected to the upper side and the lower side of the support plate through threads, and the upper ends of the adjusting screws are abutted against the liftable die table.
3. A precast box girder pedestal according to claim 2 wherein the steel structure base includes two parallel longitudinal channels and a plurality of transverse channels welded between the two longitudinal channels, and the support plate is an upper web of the longitudinal channels.
4. The precast box girder pedestal according to claim 1, wherein a first formwork is provided on an upper surface of the reinforced concrete fixed formwork, a second formwork is provided on an upper surface of the liftable formwork, and a third formwork is provided between the first formwork and the second formwork, and is overlapped between the upper surface of the reinforced concrete fixed formwork and the upper surface of the liftable formwork and located above the hoisting gap.
5. The precast box girder pedestal of claim 4, wherein the first, second and third formworks are stainless steel formworks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222116371.9U CN218227177U (en) | 2022-08-11 | 2022-08-11 | Precast box girder pedestal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222116371.9U CN218227177U (en) | 2022-08-11 | 2022-08-11 | Precast box girder pedestal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218227177U true CN218227177U (en) | 2023-01-06 |
Family
ID=84682225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222116371.9U Active CN218227177U (en) | 2022-08-11 | 2022-08-11 | Precast box girder pedestal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218227177U (en) |
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2022
- 2022-08-11 CN CN202222116371.9U patent/CN218227177U/en active Active
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