CN211074121U - Prefabricated prestressed reinforced concrete box girder tensioning platform - Google Patents
Prefabricated prestressed reinforced concrete box girder tensioning platform Download PDFInfo
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- CN211074121U CN211074121U CN201921858328.1U CN201921858328U CN211074121U CN 211074121 U CN211074121 U CN 211074121U CN 201921858328 U CN201921858328 U CN 201921858328U CN 211074121 U CN211074121 U CN 211074121U
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Abstract
The utility model provides a pre-stressed reinforced concrete box girder tensioning platform, which belongs to the technical field of tensioning devices and comprises a top surface channel steel, a top surface reinforcing steel bar, a supporting steel pipe, a universal wheel, two I-shaped steels, a hand-pulling single-rail trolley and a hand-pulling block, wherein the top surface channel steel is arranged oppositely, the top surface reinforcing steel bar is connected with the top surface channel steel, the supporting steel pipe is welded at the joint of the top surface channel steel and the top surface reinforcing steel bar, the universal wheel is welded at the bottom of the supporting steel pipe and is provided with a self-locking structure, the two; hoisting reinforcing steel bars are welded at the center positions of the two top reinforcing steel bars; hoisting reinforcing steel bars are positioned on the I-shaped steel; two ends of the I-shaped steel are welded on the inner ring of the bearing, and the bearing is placed in the top surface channel steel; and a reinforcing steel bar is welded between the two supporting steel pipes connected with the same top steel bar. The tensioning platform can realize rapid transportation, provides more stable supporting force for the jack and realizes rapid movement of the jack.
Description
Technical Field
The utility model belongs to the technical field of tensioning equipment, a prefabricated prestressed reinforced concrete box girder tensioning platform is specifically disclosed.
Background
The box girder is one of the middle girders in bridge engineering, the inner part of the box girder is hollow, and flanges are arranged on two sides of the upper part of the box girder and are similar to a box, so that the box girder is named. The reinforced concrete structure box girder has wide application, and is divided into a prefabricated box girder and a cast-in-place box girder. The prefabricated box girder is prefabricated in an independent field and combined with the bridge girder erection machine, and can be erected after the lower project is completed, so that the project progress can be accelerated, and the construction period can be saved; cast-in-place box girders are mostly used for large continuous bridges. The prefabricated reinforced concrete box girder should be tensioned to ensure sufficient prestress, and the tensioning of the prefabricated reinforced concrete box girder is generally accomplished by a tensioning bracket and a tensioning jack installed on the tensioning bracket. The problems that the existing tensioning bracket is not changed in transportation, a supporting jack is not stable and the jack moves slowly in the tensioning process exist in the using process.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prefabricated prestressed reinforced concrete box girder tension platform can realize transporting fast, provides more stable holding power and realizes the quick travel of jack for the jack.
In order to achieve the purpose, the utility model provides a prefabricated prestressed reinforced concrete box girder tensioning platform, which comprises a top surface channel steel, a top surface reinforcing steel bar, a supporting steel pipe, a universal wheel, two I-shaped steels, a hand-pulling single-rail traveling crane and a hand-pulling hoist, wherein the top surface channel steel is arranged oppositely, the top surface reinforcing steel bar is connected with the top surface channel steel, the supporting steel pipe is welded at the joint of the top surface channel steel and the top surface reinforcing steel bar, the universal wheel with a self-locking structure is welded at the bottom of the supporting steel pipe, the two I-shaped; hoisting reinforcing steel bars are welded at the center positions of the two top reinforcing steel bars; hoisting reinforcing steel bars are positioned on the I-shaped steel; two ends of the I-shaped steel are welded on the inner ring of the bearing, and the bearing is placed in the top surface channel steel; and a reinforcing steel bar is welded between the two supporting steel pipes connected with the same top steel bar.
Furthermore, the precast prestressed reinforced concrete box girder tensioning platform also comprises a single-side protective steel plate; the unilateral protection steel plate is welded between two supporting steel pipes connected with the same top surface channel steel.
Furthermore, the prefabricated prestressed reinforced concrete box girder tensioning platform also comprises a storage platform; the object placing platform is arranged below the unilateral protection steel plate and is close to the unilateral protection steel plate.
Further, the object placing platform is formed by welding steel plates and is welded with the supporting steel pipe, the reinforcing steel bars and the single-side protection steel plate.
Furthermore, the surface of the prestressed reinforced concrete box girder tensioning platform is coated with antirust paint.
Compared with the prior art, the utility model discloses following beneficial effect has:
the prefabricated prestressed reinforced concrete box girder tensioning platform is hoisted to a tensioning field through hoisting equipment, workers push the tensioning platform to the two ends of the box girder, after the position is determined, the universal wheels are locked, the tensioning platform is prevented from moving in the tensioning process, a jack is installed on a hand-pulling block, and the position of the jack can be quickly adjusted by pushing an I-shaped steel and a hand-pulling single-rail traveling crane. Whole tension platform is the rectangular frame structure, stable in structure, and the setting of consolidating the reinforcing bar further guarantees overall structure's stability, provides stable holding power for the jack, realizes transporting fast through the universal wheel that sets up hoist and mount reinforcing bar and have the auto-lock structure.
Drawings
Fig. 1 is a schematic structural view of a pre-stressed reinforced concrete box girder tensioning platform provided by an embodiment of the present invention;
FIG. 2 is an elevation view of the tensioning platform of FIG. 1.
In the figure: 1-top channel steel; 2-top surface reinforcing steel bars; 3-supporting the steel pipe; 4-universal wheels; 5-I-steel; 6-hand pushing the single-rail traveling crane; 7-hand pulling a hoist; 8-hoisting the steel bars; 9-a bearing; 10-reinforcing steel bars; 11-single-side protective steel plate; 12-a placement platform.
Detailed Description
The embodiment provides a tensioning platform for a precast prestressed reinforced concrete box girder, which comprises top-surface channel steel 1, top-surface steel bars 2 connected with the top-surface channel steel 1, a supporting steel pipe 3 welded at the joint of the top-surface channel steel 1 and the top-surface steel bars 2, universal wheels 4 with self-locking structures welded at the bottom of the supporting steel pipe 3, two I-shaped steels 5 perpendicular to the top-surface channel steel 1, a hand-pulling single-rail trolley 6 with walking wheels installed in the I-shaped steels 5, and a hand-pulling hoist 7 connected with the hand-pulling single-rail trolley 6, wherein the hand-pulling; hoisting steel bars 8 are welded at the center positions of the two top surface steel bars 2; the hoisting reinforcing steel bars 8 are positioned on the I-shaped steel 5, so that the hand-pulled single-rail travelling crane 6 is prevented from moving in the I-shaped steel 5; two ends of the I-steel 5 are welded on the inner ring of the bearing 9, the I-steel 5 can be directly welded with the inner ring of the bearing 9, or round pipes can be welded on the two ends of the I-steel 5, the round pipes are welded with the inner ring of the bearing 9, and the bearing 9 is placed in the top surface channel steel 1 and can roll on the top surface channel steel 1; and a reinforcing steel bar 10 is welded between two supporting steel pipes 3 connected with the same top steel bar 2.
The prefabricated prestressed reinforced concrete box girder tensioning platform is hoisted to a tensioning field through hoisting equipment, workers push the tensioning platform to the two ends of the box girder, after the position is determined, the universal wheels 4 are locked, the tensioning platform is prevented from moving in the tensioning process, a jack is installed on a hand-pull block 7, and the position of the jack can be quickly adjusted by pushing the I-steel 5 and the hand-pull single-rail trolley 6. Whole tension platform is the rectangular frame structure, stable in structure, and overall structure's stability is further guaranteed in setting up of reinforcing bar 10, provides stable holding power for the jack, realizes the quick fortune of platform through setting up hoist and mount reinforcing bar 8 and universal wheel 4 that has self-locking structure.
Further, the precast prestressed reinforced concrete box girder tensioning platform also comprises a single-side protective steel plate 11; the unilateral protection steel plate 11 is welded between two support steel pipes 3 connected with the same top surface channel steel 1. The unilateral protection steel plate 11 is located the outside of case roof beam, and the steel strand wires of case roof beam stretch into the tension platform from the opposite face of unilateral protection steel plate 11 in, and unilateral protection steel plate 11 prevents to cause the casualties under the broken string condition from appearing in the steel strand wires.
Furthermore, the prefabricated prestressed reinforced concrete box girder tensioning platform also comprises a storage platform 12; the storage platform 12 is arranged below the unilateral protection steel plate 11 and is close to the unilateral protection steel plate 11 and used for placing tensioning equipment.
Further, the platform 12 is formed by welding steel plates, and is welded with the support steel pipe 3, the reinforcing steel bar 10 and the unilateral protection steel plate 11.
Furthermore, the surface of the pre-fabricated prestressed reinforced concrete box girder tensioning platform is coated with antirust paint so as to reduce corrosion and prolong the service life.
The above is only the embodiment of the present invention, not limiting the scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the present invention, or directly or indirectly applied to other related technical fields, and all included in the same way in the protection scope of the present invention.
Claims (5)
1. A prefabricated prestressed reinforced concrete box girder tensioning platform is characterized by comprising top surface channel steel, top surface steel bars connected with the top surface channel steel, a supporting steel pipe welded at the joint of the top surface channel steel and the top surface steel bars, universal wheels welded at the bottom of the supporting steel pipe and provided with self-locking structures, two I-shaped steels perpendicular to the top surface channel steel, a hand-pulling single-rail trolley with walking wheels installed in the I-shaped steels and a hand-pulling hoist connected with the hand-pulling single-rail trolley;
hoisting reinforcing steel bars are welded at the center positions of the two top reinforcing steel bars;
the hoisting reinforcing steel bars are positioned on the I-shaped steel;
two ends of the I-shaped steel are welded on the inner ring of the bearing, and the bearing is placed in the top surface channel steel;
and a reinforcing steel bar is welded between the two supporting steel pipes connected with the same top steel bar.
2. The prestressed reinforced concrete box beam tension platform of claim 1, further comprising a single-sided protective steel plate;
the unilateral protection steel plate is welded between two supporting steel pipes connected with the same top surface channel steel.
3. The prestressed reinforced concrete box beam tension platform of claim 2, further comprising a storage platform;
the object placing platform is arranged below the unilateral protection steel plate and is close to the unilateral protection steel plate.
4. The prestressed reinforced concrete box beam tension platform of claim 3, wherein the storage platform is welded by steel plates, and is welded with the support steel pipes, the reinforcing steel bars and the single-side protective steel plates.
5. The prestressed reinforced concrete box beam tensioning platform according to claim 4, wherein the surface of the prestressed reinforced concrete box beam tensioning platform is coated with an anti-rust paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921858328.1U CN211074121U (en) | 2019-10-31 | 2019-10-31 | Prefabricated prestressed reinforced concrete box girder tensioning platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921858328.1U CN211074121U (en) | 2019-10-31 | 2019-10-31 | Prefabricated prestressed reinforced concrete box girder tensioning platform |
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| Publication Number | Publication Date |
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| CN211074121U true CN211074121U (en) | 2020-07-24 |
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| CN201921858328.1U Active CN211074121U (en) | 2019-10-31 | 2019-10-31 | Prefabricated prestressed reinforced concrete box girder tensioning platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114808705A (en) * | 2022-02-28 | 2022-07-29 | 中国五冶集团有限公司 | Prestress tension operation platform with protection facilities |
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2019
- 2019-10-31 CN CN201921858328.1U patent/CN211074121U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114808705A (en) * | 2022-02-28 | 2022-07-29 | 中国五冶集团有限公司 | Prestress tension operation platform with protection facilities |
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