Movement-limit adjusting device of precast box beam
A technology for adjusting devices and box girders, applied in the direction of ceramic molding cores, ceramic molding mandrels, etc., can solve problems such as uneven force, inconvenient use, and influence on internal molds, and achieve the effect of convenient height and size
Inactive Publication Date: 2011-05-04
宋国民
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Problems solved by technology
The inner mold mainly includes the top mold, the side mold hingedly connected with the top mold, and a plurality of load-bearing pillars used to support the top mold. The height of the walking beams needs to be fine-tuned. The usual method is to adjust by jacks and other methods. However, it is inconvenient to install and use, which brings great restrictions.
In addition, the use of Qianjinding and other methods will result in uneven force, which will affect the entire internal mold
Method used
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[0017] The present invention will now be described in further detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.
[0018] Such as Figure 1-3 The shown limit adjustment device for the 32m or 24m prefabricated box girder of the high-speed passenger dedicated line includes the inner mold 1, the walking beam 3 is installed in the inner mold 1, the inner mold 1 is symmetrically distributed along the center line 5, and the inner mold 1 also includes Top form 7, side form 9 that is hingedly connected with top form 7, angle formwork 10 that is hingedly connected with side form 9, and the load-bearing pillar 11 that is used to support top form 7, and this load-bearing pillar 11 is connected with walking beam 3 by hydraulic oil cylinder , the to...
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The invention discloses a spacing regulation device of a prefabrication box girder, which comprises an internal mold. A walking girder is installed in the internal mold; the internal mold is distributed symmetrically along a centre line; the internal mold further comprises a back form, a side form hinged with the back mold, a corner form hinged with the side form, and a bearing pillar for supporting the back form. The bearing pillar is connected with the walking girder through a hydraulic cylinder; the back form is connected with the side form through the hydraulic cylinder, and the side formis connected with the corner form through the hydraulic cylinder; a spacing regulation mechanism is arranged between the bearing pillar and the walking girder; a bearing stop pin hole is arranged on the bearing pillar; and a stop pin is arranged in and matched with the bearing stop pin hole. Since a wedge-shaped block is adopted, the vertical pressure between the bearing pillar and the walking girder is transformed into the wedge-shaped plane pressure, thus releasing the stress. In addition, double end studs are used for micro-adjusting the entire height and allowing the bearing stop pin to be drawn conveniently.
Description
technical field [0001] The invention relates to the field of on-site construction equipment, in particular to a limit adjustment device for a prefabricated box girder of a high-speed railway passenger dedicated line. Background technique [0002] On the high-speed railway passenger dedicated line, in view of the high-standard requirements of high-speed traffic on the smoothness of the line, most road sections are spanned in the form of bridge structures, which makes the hollow prestressed box girders with full holes widely used. In the prefabrication process, one of the necessary large-scale construction equipment is the supporting mold-"inner mold" that forms the space inside the box. The inner mold mainly includes the top mold, the side mold hingedly connected with the top mold, and a plurality of load-bearing pillars used to support the top mold. The height of the walking beams needs to be fine-tuned, and the usual method is to adjust them by means of jacks, etc., but th...
Claims
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IPC IPC(8): B28B7/30
Inventor 宋国民
Owner 宋国民