CN218508241U - Jig frame device for pre-splicing steel box girder - Google Patents

Abstract

The invention discloses a jig frame device for pre-splicing steel box girders, and relates to the technical field of steel box girder assembly construction. Including the I-steel crossbeam that the level set up two of interval fixed connection prop immediately on the I-steel crossbeam, prop immediately and be the circular steel tube, the welding is erect to the circular steel tube on the I-steel crossbeam the top welding that props immediately has the connecting plate fixed connection sleeve above the connecting plate, the sleeve is equipped with the internal thread, the lower part screw in of lead screw in the sleeve, upper portion fixed connection backing plate connect the rubber pad above the backing plate. The invention can realize the accurate matching of the beam section interface, correct the relevant dimension, avoid the high-altitude adjustment, reduce the difficulty of high-altitude operation, ensure the accurate installation and construction progress of the beam section and realize the intuitive monitoring of the box girder linearity.

Description

Bed-jig device that steel case roof beam pieced together in advance and used

Technical Field

The utility model belongs to the technical field of steel case roof beam assembly construction, more specifically say, relate to a bed-jig device that steel case roof beam pieced together in advance and used.

Background

The steel box girder structure has the characteristics of large volume, complex linearity and uneven weight distribution. The field processing precision is not high, and environmental factors and weather influence are great, so can make into little section in the processing factory, transports the job site and installs. The construction method is characterized in that the construction method is used for temporary assembly, 2-3 sections of the segments are assembled together for hoisting, too much overhead operation is not needed, a large number of construction periods are saved, and support materials are saved. But the box girder segment is in large quantity, and segment length is short, if directly hoist, high altitude work load is big, and the support quantity that needs also can increase, leads to the unable completion in the time limit for a project easily, uses the bed-jig device to assemble the back temporarily and is hoisting, assembles the multistage on the bed-jig device on ground and put together hoist, can reduce high altitude construction's work load, makes things convenient for workman's construction, has improved work efficiency greatly, can save a large amount of time limit for a project. And the number of the supports can be saved by using the jig frame tool, and the material expenditure is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a bed-jig device that steel box girder pieced together in advance used is provided, can realize the accurate matching of roof beam section interface, revises relevant size, avoids the high altitude adjustment, reduces high altitude construction's the degree of difficulty, ensures the accurate installation of roof beam section and construction progress, realizes the linear monitoring directly perceived of box girder.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is:

the utility model provides a bed-jig device that steel case roof beam pieced together in advance used, the device mainly includes: the device comprises an I-shaped steel cross beam, a steel pipe inclined strut, a lead screw, a nut (connecting plate), a steel plate and a rubber gasket which are horizontally arranged; specifically, the method comprises the following steps: two vertical supports of interval fixed connection are erected on the I-steel crossbeam, erect and prop to be the circular steel tube, the welding is erect to the circular steel tube on the I-steel crossbeam the top welding that erects to prop has the connecting plate the higher authority fixed connection sleeve of connecting plate, the sleeve is equipped with the internal thread, the lower part screw in of lead screw in the sleeve, upper portion fixed connection backing plate place the rubber gasket on the backing plate.

Preferably, the connecting plate is provided with a circular groove, the lower end of the sleeve is embedded into the circular groove, and the sleeve is connected with the connecting plate in a welding mode.

Preferably, the two sides of the I-shaped steel beam are respectively welded and connected with an inclined strut, and the inclined struts are steel pipes.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the jig frame device directly and clearly reflects the vertical curve of the bridge, is convenient to adjust, only needs to rotate the lead screw, has no influence on the device by the ground with small height difference, and can directly find out the standard horizontal line through the lead screw to adjust the vertical curve; the level gauge can be directly used for measurement when the repetition measurement of the vertical curve is carried out. The jig frame device can also accurately install the box girder by adjusting the height of the lead screw, avoids excessive high-altitude operation, saves labor and construction period, and enhances the linear precision of the bridge.

Drawings

Fig. 1 is a schematic front view of the present invention;

fig. 2 is a left side view structure diagram of the present invention;

in the figure: 1. an I-beam cross beam; 2. standing and supporting; 3. a connecting plate; 4. a sleeve; 5. a lead screw; 6. a backing plate; 7. a rubber pad; 8. and (4) bracing.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1-2, the jig frame device includes: a horizontally arranged 600I-steel beam 1, two vertical supports 2 fixedly connected on the I-steel beam 1 at intervals, and the vertical supports 2 adopt

And (5) steel pipes. The vertical support 2 is vertically welded on the I-shaped steel beam 1, and the top end of the vertical support 2 is welded with a connecting plate 3. The connecting plate 3 is provided with a circular groove, the lower end of the sleeve 4 is embedded into the circular groove and then is welded with the connecting plate 3, and the structure enables the connection of the connecting plate 3 and the sleeve 4 to be firmer. The sleeve 4 is provided with internal threads, the lower part of the screw rod 5 is screwed into the sleeve 4, the upper part of the screw rod is fixedly connected with a backing plate 6, and a rubber pad 7 is connected to the upper surface of the backing plate 6. The rubber pad 7 can be pasted on the backing plate 6 to prevent the rust-proof paint of the steel box girder from being damaged. And two sides of the I-shaped steel beam 1 are respectively welded and connected with an inclined strut 8, so that the I-shaped steel beam 1 is prevented from toppling. The diagonal brace 8 is

And (5) steel pipes. And an expansion bolt is arranged at the contact part of the inclined strut 8 and the ground to prevent the inclined strut 8 and the I-shaped steel beam 1 from sliding.

During actual use, one I-steel beam 1 is placed at each 5 m position, the I-steel beams 1 need to be placed on the same straight line, and the rubber pad 7 is ensured to be positioned under the box girder web. Through the total station mode, after the I-steel is placed, the height of the lead screw 5 is adjusted through the leveling instrument, and the vertical curve of the bridge is ensured.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims (3)

1. The utility model provides a bed-jig device that steel case roof beam pieced together in advance used which characterized in that includes: i-steel crossbeam (1) that the level set up interval fixed connection two immediately prop (2) on I-steel crossbeam (1), immediately prop (2) and be the circular steel tube, the welding is erect to the circular steel tube on I-steel crossbeam (1) immediately prop the top welding of (2) and have connecting plate (3) fixed connection sleeve (4) above connecting plate (3), sleeve (4) are equipped with the internal thread, the lower part screw in of lead screw (5) in sleeve (4), upper portion fixed connection backing plate (6) connect rubber pad (7) above of backing plate (6).

2. The jig frame device for pre-splicing steel box girders according to claim 1, wherein the connecting plate (3) is provided with a circular groove, the lower end of the sleeve (4) is embedded into the circular groove, and the sleeve (4) is welded to the connecting plate (3).

3. The jig frame device for pre-splicing steel box girders according to claim 1, wherein two sides of the I-shaped steel cross beam (1) are respectively welded and connected with an inclined strut (8), and the inclined strut (8) is a steel pipe.

Images