CN217810541U - Sand box for steel box girder - Google Patents
Sand box for steel box girder Download PDFInfo
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- CN217810541U CN217810541U CN202221860550.7U CN202221860550U CN217810541U CN 217810541 U CN217810541 U CN 217810541U CN 202221860550 U CN202221860550 U CN 202221860550U CN 217810541 U CN217810541 U CN 217810541U
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- steel
- wedge block
- sand
- box
- sand box
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Abstract
The utility model discloses a sand box for a steel box girder, which comprises a steel jacket, a bottom plate, wedge blocks and sand; the wedge blocks comprise a lower triangular wedge block and an upper triangular wedge block, adjusting screws are arranged in the upper triangular wedge block and the lower triangular wedge block through threads, fastening nuts are arranged on the adjusting screws, a sand box top plate is fixedly arranged at the upper part of each wedge block, and a tetrafluoroethylene plate is arranged at the top of the sand box top plate; and the lower part of the steel outer sleeve is provided with a plurality of threaded holes, and adjusting bolts are arranged in the threaded holes. The utility model discloses a sand box for steel box girder has adopted the voussoir to add the liftable structure of screw rod, through adjusting screw and nut, can make upper and lower triangle-shaped voussoir remove each other, can adjust the mounting elevation of steel box girder, ensures its installation accuracy, makes steel box girder mounting elevation error reduce to within 2mm, and construction operation is simple and convenient, bears well; the unloaded sand box can be reused, so that the material is saved, the construction cost is reduced, the structural design is reasonable, and the installation and the application are convenient.
Description
Technical Field
The utility model relates to a sand box for steel box girder.
Background
At present, in the field of bridge and road construction, particularly in the installation process of simply supported and then continuous bridges of suspension bridges or arch bridge steel box girders, most of the adopted support systems are sand roof devices.
The sand top device is characterized in that sand is placed in a steel box, a concrete round cake is placed on the sand to support the installation of a steel box girder, when a bridge body is closed, the adjustment of the heights of the bridge bodies at two ends is completed by arranging a wedge iron on the sand top device in a cushioning mode, and the sand top device does not have a lifting function, so that inconvenience is brought to installation and construction; when the sand top device is unloaded, the steel box needs to be cut by gas cutting, and then the sand is discharged, so that the steel box can not be reused, raw materials are wasted, and the construction cost is increased.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides a sand box for steel box girder, the installation height is adjustable, and the installation accuracy is high, convenient operation to can improve the turnover utilization ratio.
In order to achieve the purpose, the sand box for the steel box girder comprises a steel outer sleeve, a bottom plate arranged at the bottom of the steel outer sleeve, a wedge block arranged at the upper part of the steel outer sleeve and sand filled at the lower part of the steel outer sleeve;
the wedge block comprises a lower triangular wedge block and an upper triangular wedge block which are matched with each other, adjusting screws are arranged in the lower triangular wedge block and the upper triangular wedge block through threads, fastening nuts are arranged on the adjusting screws, a sand box top plate integrated with the wedge block is fixedly arranged at the upper part of the wedge block, and a tetrafluoroethylene plate is arranged at the top of the sand box top plate;
the lower part of the steel outer sleeve is provided with a plurality of threaded holes, and adjusting bolts are installed in the threaded holes.
As an improvement, the diameter of the top plate of the sand box is larger than the inner diameter of the steel jacket.
As an improvement, the upper triangular wedge block is welded with the top plate of the sand box into a whole.
As an improvement, the threaded holes are regularly arranged at the lower part of the steel outer sleeve in a ring shape with equal height.
As a modification, the top surface of the tetrafluoroethylene board is coated with a silicone grease layer.
Compared with the prior art, the sand box for the steel box girder adopts the lifting structure of the wedge block and the screw rod, the upper triangular wedge block and the lower triangular wedge block can move mutually through the adjusting screw rod and the nut, the mounting elevation of the steel box girder can be adjusted, the mounting precision is ensured, the mounting elevation error of the steel box girder is reduced to be within the range of 2mm, the construction operation is simple and convenient, and the bearing is good; when the sand box needs to be unloaded, the sand in the steel jacket can be discharged by screwing out the adjusting bolts at the lower parts of the four corners of the steel jacket, so that the tetrafluoroethylene plate descends to be separated from the steel box beam, the unloaded sand box can be reused, the material is saved, the construction cost is reduced, the structural design is reasonable, and the installation and the application are convenient.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the connection structure of the wedge and the adjusting screw according to the present invention;
in the figure: 1. adjusting bolts, 2, a steel jacket, 3, a bottom plate, 4, sand, 5, wedges, 51, lower triangular wedges, 52, upper triangular wedges, 6, a sand box top plate, 7, a tetrafluoroethylene plate, 8 and adjusting screws.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below. It should be understood, however, that the description herein of specific embodiments is for purposes of illustration only and is not intended to limit the scope of the present disclosure.
As shown in fig. 1, the sand box for the steel box girder comprises a steel jacket 2, a bottom plate 3 arranged at the bottom of the steel jacket 2, a wedge 5 arranged at the upper part of the steel jacket 2 and sand 4 filled at the lower part of the steel jacket 2; the steel outer sleeve 2 can be welded on the bottom plate 3, the wedge blocks 5 comprise a lower triangular wedge block 51 and an upper triangular wedge block 52 which are matched with each other, adjusting screws 8 are installed in the lower triangular wedge block 51 and the upper triangular wedge block 52 through threads, fastening nuts are installed on the adjusting screws 8, when the adjusting screws 8 are rotated, the upper triangular wedge block and the lower triangular wedge block can move mutually, the installation height of the steel box girder can be adjusted, and after the adjustment is in place, the adjusting screws 8 are fastened through the fastening nuts;
a sand box top plate 6 integrated with the wedge block 5 is fixedly arranged at the upper part of the wedge block 5, and a tetrafluoroethylene plate 7 is arranged at the top of the sand box top plate 6; the lower part of the steel outer sleeve 2 is provided with a plurality of threaded holes, the threaded holes are internally provided with adjusting bolts 1, and the adjusting bolts 1 can make the sand 4 leak out after being removed in the threaded holes. The utility model discloses a steel overcoat 2 has not only enlarged the pressurized area, transmits the load to construction platform on, can play the outer hoop effect moreover, makes grit 4, voussoir 5 and adjusting screw 8 joint work, has kept the overall stability.
Preferably, the diameter of the sand box top plate 6 is larger than the inner diameter of the steel jacket 2.
Preferably, the upper triangular wedge 52 is welded to the flask top plate 6. The sand box top plate 6 can keep the clearance fit between the wedge block 5 and the steel jacket 2, and has the function of balancing the wedge block 5, thereby having a stable effect.
Preferably, the threaded holes are regularly arranged in a ring shape at the lower part of the steel outer sleeve 2 with equal height. Ensuring that the sand 4 can be effectively controlled to stably flow out of the steel jacket 2 when unloading.
Preferably, the tetrafluoroethylene sheet 7 is coated with a silicone grease layer on the top surface. The tetrafluoroethylene plate 7 can increase the contact area between the bottom of the steel box girder and the top plate of the sand box, and avoid causing local deformation of the bottom plate of the steel box girder and falling off of paint. The tetrafluoroethylene plate 7 is coated with silicone grease to play a role in sliding.
During bearing, the adjusting screw 8 is screwed by a wrench, so that the adjusting screw 8 rotates along the threads in the lower triangular wedge 51 and the upper triangular wedge 52 (the lower triangular wedge 51 and the upper triangular wedge 52 are controlled to be close to or far away from each other), the top plate is adjusted to move up and down, and the elevation of the steel box girder is finely adjusted; when the system is converted and unloaded, the adjusting bolt 1 on the steel outer sleeve 2 is firstly screwed out, the sand 4 in the adjusting bolt is discharged, and the tetrafluoroethylene sheet 7 descends to be separated from the steel box girder.
The utility model discloses a sand box for steel box girder has adopted the voussoir to add the liftable structure of screw rod, through adjusting screw and nut, can make upper and lower triangle-shaped voussoir remove each other, can adjust the mounting elevation of steel box girder, ensures its installation accuracy, makes steel box girder mounting elevation error reduce to within 2mm, and construction operation is simple and convenient, bears well; when the sand box needs to be unloaded, the sand in the steel jacket can be discharged by screwing out the adjusting bolts at the lower parts of the four corners of the steel jacket, so that the tetrafluoroethylene plate descends to be separated from the steel box beam, the unloaded sand box can be reused, the material is saved, the construction cost is reduced, the structural design is reasonable, and the installation and the application are convenient.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.
Claims (5)
1. A sand box for a steel box girder comprises a steel outer sleeve (2), a bottom plate (3) arranged at the bottom of the steel outer sleeve (2), a wedge block (5) arranged at the upper part of the steel outer sleeve (2) and sand (4) filled at the lower part of the steel outer sleeve (2);
the sand box structure is characterized in that the wedge block (5) comprises a lower triangular wedge block (51) and an upper triangular wedge block (52) which are matched with each other, adjusting screws (8) are installed in the lower triangular wedge block (51) and the upper triangular wedge block (52) through threads, fastening nuts are installed on the adjusting screws (8), a sand box top plate (6) which is integrated with the wedge block (5) is fixedly installed at the upper part of the wedge block (5), and a tetrafluoroethylene plate (7) is arranged at the top of the sand box top plate (6);
the lower part of the steel outer sleeve (2) is provided with a plurality of threaded holes, and adjusting bolts (1) are installed in the threaded holes.
2. A flask for steel box beams according to claim 1, characterized in that the diameter of the flask top plate (6) is larger than the inner diameter of the steel jacket (2).
3. The sand box for steel box girders according to claim 1, characterized in that the upper triangular wedge (52) is welded integrally with the top plate (6) of the sand box.
4. The sand box for steel box girders according to claim 1, wherein the threaded holes are regularly arranged in a ring shape at the lower part of the steel jacket (2) with a uniform height.
5. The sand box for steel box girders according to claim 1, characterized in that the top surface of the tetrafluoroethylene sheet (7) is painted with a silicone grease layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221860550.7U CN217810541U (en) | 2022-07-20 | 2022-07-20 | Sand box for steel box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221860550.7U CN217810541U (en) | 2022-07-20 | 2022-07-20 | Sand box for steel box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217810541U true CN217810541U (en) | 2022-11-15 |
Family
ID=83966260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221860550.7U Active CN217810541U (en) | 2022-07-20 | 2022-07-20 | Sand box for steel box girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217810541U (en) |
-
2022
- 2022-07-20 CN CN202221860550.7U patent/CN217810541U/en active Active
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