CN209753717U - Arc pressing equipment for pressing steel box girder and steel-concrete girder - Google Patents
Arc pressing equipment for pressing steel box girder and steel-concrete girder Download PDFInfo
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- CN209753717U CN209753717U CN201920260945.5U CN201920260945U CN209753717U CN 209753717 U CN209753717 U CN 209753717U CN 201920260945 U CN201920260945 U CN 201920260945U CN 209753717 U CN209753717 U CN 209753717U
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Abstract
An arc pressing device for pressing steel box beams and steel-concrete beams. The corresponding tire membranes are manufactured according to the arc pressing radius in the bridge bottom plate arc pressing construction, and the arc pressing equipment is provided with an operation platform, a portal steel frame upright post, a cross beam, a hydraulic jack, a lower tire membrane, an upper tire membrane and the like. According to the invention, through optimizing the radiuses and radians of the upper and lower tire membranes, the problem of rebound deformation caused in the process of pressing the arc of the bridge bottom plate can be solved, the pressure of a jack is uniformly and effectively transmitted to the pressed steel plate through the arc pressing equipment, the effect of designing the radian of the whole steel bridge bottom plate is achieved, and meanwhile, the working efficiency is improved. The relatively normal arc rolling equipment has an obvious effect on the arc rolling of the bottom plate, the design radian is ensured by adjusting the upper and lower tire membranes and the pressure in the arc pressing construction of the bridge bottom plate, the control difficulty of the steel plate radian in the arc pressing process of the steel bridge bottom plate is greatly reduced, and the arc pressing efficiency is improved.
Description
Technical Field
The utility model belongs to engineering construction field, concretely relates to a pressure arc equipment for suppressing steel case roof beam and reinforced concrete roof beam.
Background
The existing arc pressing machine can only press thin plates and ultrathin plates, and the thickness is generally 0.2-4 mm. At that time, the bottom plate of the steel bridge is generally a medium plate and a thick plate, and the thickness is generally 5-40 mm. Therefore, the existing arc pressing machine can not meet the production requirements and can not achieve the preset effect. When the arc pressing processing is carried out on the medium and thick plates, the steel plate to be pressed is transmitted by using the jack pressure only by using the jack device in the conventional arc pressing process, the method has long time and low efficiency, and after the arc pressing is formed after one-step processing, the integral precision of the steel plate is low, and the construction quality is difficult to ensure.
Disclosure of Invention
In order to solve the problems, the utility model provides an arc pressing device for pressing steel box beams and reinforced concrete beams, which comprises a steel platform on the ground, a tire membrane placed on the steel platform and a pressing device hung on the upper part of the tire membrane; the gate type steel frame upright columns of the pressing device are arranged on two sides of a steel platform on the ground, N groups of gate type steel frame upright columns are longitudinally arranged, a longitudinal beam is arranged at the top of each gate type steel frame upright column, and a cross beam stretches across the two gate type steel frame upright columns opposite in position and is fixedly connected to the longitudinal beam; the jack is arranged on the cross beam and can press downwards towards the lower tire membrane; the tire membrane consists of a lower tire membrane and an upper tire membrane, and the steel plate to be pressed is placed between the upper tire membrane and the lower tire membrane. Through the structure, the utility model discloses can solve steel bridge and press arc in-process steel sheet resilience to warp, pass through "pressure arc equipment" with jack pressure transition to by the steel sheet of exerting pressure, reach the effect of whole steel bridge bottom plate design radian.
In order to realize the purpose, the utility model discloses a technical scheme be: an arc pressing device for pressing steel box beams and steel-concrete beams comprises a steel platform on the ground, a tire membrane placed on the steel platform and a pressing device hung on the upper part of the tire membrane; the gate type steel frame upright columns of the pressing device are arranged on two sides of a steel platform on the ground, N groups of gate type steel frame upright columns are longitudinally arranged, a longitudinal beam is arranged at the top of each gate type steel frame upright column, and a cross beam stretches across the two gate type steel frame upright columns opposite in position and is fixedly connected to the longitudinal beam; the jack is arranged on the cross beam and can press downwards towards the lower tire membrane; the tire membrane consists of a lower tire membrane and an upper tire membrane, and the steel plate to be pressed is placed between the upper tire membrane and the lower tire membrane.
The steel platform by H shaped steel as the platform girder steel, arrange the welding according to the well style of calligraphy and form, the interval of adjacent platform girder steel is 200mm, every 6mm double-sided welding of platform girder steel has the stiffening plate.
The jack is hung upside down on the cross beam by adopting four round steel bars and is screwed by using bolts; n jacks are uniformly distributed on each cross beam, and the distance between every two jacks is 1.5 m.
The upper tire membrane is characterized in that a steel pad pier is arranged on the upper portion of the upper tire membrane and used for increasing the pressure stroke of a jack and transmitting the pressure of the jack to the upper tire membrane.
The lower surface of the upper tire membrane and the upper surface of the lower tire membrane correspond to the shape angle of a forming arc surface of the steel plate to be pressed.
The upper tire mold is formed by welding I-shaped steel in a transverse and longitudinal arrangement mode, and stiffening plates are welded on two sides of the upper tire mold at intervals of 300 mm.
The lower tire casing is formed by welding steel plates with the thickness of 20m in a transverse and longitudinal mode.
The utility model has the advantages that: the utility model discloses an above-mentioned structure provides a pressure arc equipment, for a set of linkage structure is constituteed to upper and lower child membrane and a N jack, the outside sets up a big crossbeam with gate-type steel frame construction top, when starting linkage jack for upper and lower child membrane atress, can make and be pressed the even atress of arc steel sheet simultaneously, ensures steel sheet radian one shot forming, through adjusting child membrane radian about, the depth of pushing down and the time of pushing down, accurate control the resilience of steel sheet warp.
Drawings
FIG. 1 is a plan view of a steel plate.
Fig. 2 is a structural elevation view of the present invention.
FIG. 3 is a sectional view of the structure of the present invention
Detailed Description
An arc pressing device for pressing steel box beams and steel-concrete beams comprises a steel platform 8 on the ground, a tire membrane placed on the steel platform 8 and a pressing device hung on the upper part of the tire membrane; the portal steel frame upright posts 3 of the pressing device are arranged on two sides of a steel platform 8 on the ground, N groups of portal steel frame upright posts 3 are longitudinally arranged, a longitudinal beam 2 is arranged at the top of each side portal steel frame upright post 3, and a cross beam 1 spans the two portal steel frame upright posts 3 opposite in position and is fixedly connected to the longitudinal beam 2; the jack 7 is arranged on the cross beam 1 and can press downwards towards the lower fetal membrane; the tire membrane consists of a lower tire membrane 5 and an upper tire membrane 4, and a steel plate 6 to be pressed is placed between the upper tire membrane and the lower tire membrane.
The steel platform 8 is formed by welding H-shaped steel serving as platform steel beams 8-1 in a grid-shaped arrangement mode, the distance between every two adjacent platform steel beams 8-1 is 200mm, and stiffening plates are welded on the two sides of every two adjacent platform steel beams 8-1 at intervals of 6 mm.
The jack 7 is hung upside down on the cross beam 1 by adopting four round steel bars and is screwed by using bolts; n jacks are uniformly distributed on each cross beam 1, and the distance between every two jacks is 1.5 m.
The upper part of the upper tire membrane 4 is provided with a steel pad pier 4-1, and the steel pad pier 4-1 is used for increasing the pressure stroke of a jack and transmitting the pressure of the jack to the upper tire membrane. The lower surface of the upper tire membrane 4 and the upper surface of the lower tire membrane 5 correspond to the forming arc shape angle of the steel plate 6 to be pressed.
The upper tire casing 4 is formed by welding I-steel in a transverse and longitudinal arrangement mode, and stiffening plates are welded on two sides of the upper tire casing every 300 mm. The lower tire membrane 5 is formed by welding steel plates with the thickness of 20m in a transverse and longitudinal arrangement mode.
In the specific application: in order to ensure that the steel bridge bottom plate is stressed uniformly in the arc pressing process, a steel platform is erected on the ground, and in order to ensure the rigidity of the steel platform, the steel bridge bottom plate is arranged in a cross shape with the section of 350 x 320 x 12 x 14H-shaped steel every 200 mm. The plane size of the steel platform is 4m 10m, and stiffening plates are arranged on two sides of each platform beam at intervals of 600 mm. 350-20-30H-shaped steel frames are arranged on two sides of the steel platform, the steel frames are connected with platform beams in a bolt welding mode, large cross beams are arranged on the tops of the steel frames, the large cross beams are 750-350-20-30H-shaped steel, and the large cross beams are connected with the steel beams in a welding mode. The jack is hung upside down on the large cross beam by adopting 4 phi 20 round steel bars and is screwed down by bolts. 4 jacks are arranged every 1.5 m. The upper tire membrane adopts 350-320-20-30H-shaped steel, stiffening plates are welded on two sides of each 300mm, the lower tire membrane adopts a steel plate with the thickness of 20mm, the required radian is blanked by a numerical control cutting machine, and the steel plates are assembled and welded once every 600 mm.
The arc pressing device is arranged every 1.5m, a jack is arranged at the lower part of each arc pressing device and used for cold bending downward pressure of the steel bridge bottom plate in the arc pressing process, the lower tire membrane and the platform plate are welded and fixed below the jack, the arc pressing plate is placed in the lower tire membrane, the upper tire membrane is placed in the upper tire membrane, the steel pad pier is placed on the upper tire membrane, and the jack is pressed, so that the stroke distance is not enough, and the steel pad pier is adopted. And 4 jacks are used for simultaneously applying pressure, the pressure is uniformly transmitted to the moulding bed, and the moulding bed is kept still for 5 to 10 minutes when the moulding bed is pressed to a certain radian, so that the steel plate is prevented from rebounding and deforming.
Claims (7)
1. The utility model provides a press arc equipment for suppressing steel case roof beam and reinforced concrete beam which characterized in that: comprises a steel platform (8) on the ground, a fetal membrane placed on the steel platform (8) and a pressing device hung on the upper part of the fetal membrane; the gate-type steel frame upright columns (3) of the pressing device are arranged on two sides of a steel platform (8) on the ground, N groups of gate-type steel frame upright columns (3) are longitudinally arranged, a longitudinal beam (2) is arranged at the top of each side gate-type steel frame upright column (3), and a cross beam (1) spans two gate-type steel frame upright columns (3) opposite in position and is fixedly connected to the longitudinal beam (2); the jack (7) is arranged on the cross beam (1) and can press downwards towards the lower tire membrane; the tire membrane consists of a lower tire membrane (5) and an upper tire membrane (4), and a steel plate (6) to be pressed is placed between the upper tire membrane and the lower tire membrane.
2. The arc pressing equipment for pressing the steel box girder and the steel-concrete girder according to claim 1, wherein: the steel platform (8) is formed by arranging and welding H-shaped steel serving as platform steel beams (8-1) according to a shape like a Chinese character jing, the distance between every two adjacent platform steel beams (8-1) is 200mm, and stiffening plates are welded on the two sides of the platform steel beams (8-1) at intervals of 6 mm.
3. The arc pressing equipment for pressing the steel box girder and the steel-concrete girder according to claim 1, wherein: the jack (7) is hung upside down on the cross beam (1) by adopting four round steel bars and is screwed down by using bolts; n jacks are uniformly distributed on each cross beam (1), and the distance between every two jacks is 1.5 m.
4. The arc pressing equipment for pressing the steel box girder and the steel-concrete girder according to claim 1, wherein: a steel pad pier (4-1) is placed at the upper part of the upper tire membrane (4), and the steel pad pier (4-1) is used for increasing the pressure stroke of a jack and transmitting the pressure of the jack to the upper tire membrane.
5. The arc pressing equipment for pressing the steel box girder and the steel-concrete girder according to claim 1, wherein: the lower surface of the upper tire membrane (4) and the upper surface of the lower tire membrane (5) correspond to the forming arc surface shape angle of the steel plate (6) to be pressed.
6. The arc pressing equipment for pressing the steel box girder and the steel-concrete girder according to claim 1, wherein: the upper tire membrane (4) is formed by welding I-steel in a transverse and longitudinal arrangement mode, and stiffening plates are welded on two sides of the upper tire membrane at intervals of 300 mm.
7. The arc pressing equipment for pressing the steel box girder and the steel-concrete girder according to claim 1, wherein: the lower tire casing (5) is formed by welding steel plates with the thickness of 20m in a transverse and longitudinal arrangement mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920260945.5U CN209753717U (en) | 2019-03-01 | 2019-03-01 | Arc pressing equipment for pressing steel box girder and steel-concrete girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920260945.5U CN209753717U (en) | 2019-03-01 | 2019-03-01 | Arc pressing equipment for pressing steel box girder and steel-concrete girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209753717U true CN209753717U (en) | 2019-12-10 |
Family
ID=68753155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920260945.5U Active CN209753717U (en) | 2019-03-01 | 2019-03-01 | Arc pressing equipment for pressing steel box girder and steel-concrete girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209753717U (en) |
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2019
- 2019-03-01 CN CN201920260945.5U patent/CN209753717U/en active Active
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