CN210231088U

CN210231088U - Mould of steel case roof beam U rib preparation

Info

Publication number: CN210231088U
Application number: CN201920811461.5U
Authority: CN
Inventors: Weihua Miao; 苗维华; Qing Ruan; 阮青; Ligang Li; 李立刚; Ling Zhang; 张玲; Bin Yan; 闫斌
Original assignee: No9 Metallurgical Construction Corp; Zhengzhou No9 Metallurgical Sanwei Chemical Machinery Co ltd
Current assignee: No9 Metallurgical Construction Corp; Zhengzhou No9 Metallurgical Sanwei Chemical Machinery Co ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-04-03
Anticipated expiration: 2029-05-31

Abstract

The utility model relates to a mould of steel box girder U rib preparation, including last mould and bed die, it includes convex mould and connecting seat to go up the mould, connecting seat lower part center part welds on the upper portion of convex mould, end symmetry both sides are the arc surface plush copper under the convex mould, the bed die includes concave seat, connecting plate and stop device, the connecting plate welds in the lower part of concave seat, stop device symmetrical welding is at concave seat up end, the center part of concave seat is the U type groove that link up, it arranges the U type recess at bed die center directly over to go up mould arc surface plush copper, agree with each other with the bed die, there is the clearance of U rib thickness between the lower terminal surface of convex mould and the recess of concave seat. The utility model has the advantages of simple and reasonable structure, easy production, easy operation, it is with low costs, make through convex mould and the concave type seat on the mould, can make U rib one shot forming, improved production efficiency and the size is accurate, has shortened the preparation cycle, the workman's that has significantly reduced working strength, respond well.

Description

Mould of steel case roof beam U rib preparation

Technical Field

The utility model relates to a U rib production facility, especially a mould of steel box girder U rib preparation.

Background

In recent years, with the development of social economy, the demand for traffic construction is increasing day by day, and the metallurgical, welding, design and erection construction techniques are also advancing continuously, and the construction of domestic and foreign large-span steel bridges is developing dramatically, wherein the orthotropic steel bridge deck refers to a deck structure supported on a diaphragm plate and stiffened by open or closed stiffening ribs, the structure has many advantages of light dead weight, large bearing capacity, large span, and the like, is particularly suitable for large-span bridges, shows good economy and applicability, is widely used in large-span bridges, and has the structural characteristics of a large-scale thin plate welding box steel structure, mainly comprising a top plate, a bottom plate, a diaphragm plate, longitudinal diaphragms, and the like, the top plate, the bottom plate and an inclined bottom plate are generally stiffened by U ribs longitudinally, and are arranged in parallel along the bridge direction inside the steel box girder, and the thickness of the U ribs is according to the supported top, The bottom plate thickness is determined, the length is generally the same as that of the steel box girder, and the two side angle welding seams are welded with the top plate and the bottom plate together to increase the integral rigidity of the steel box girder.

At present, the production and processing of the U rib in China mainly comprise two types: roll bending and bending. The roll bending U rib is made of a rolled plate material by adopting a continuous deformation online production die and is suitable for mass production. The U rib of bending uses the medium plate preparation, and the pressure that utilizes the bender needs twice the shaping of bending, is applicable to small batch production, nevertheless because need bend twice, is difficult to guarantee the shaping precision, and production efficiency is slow, and to the U rib stress release after the shaping uncontrollable, after finishing production, wantonly shaping U rib stress release, this needs the operator to have sufficient experience, and intensity of labour is great, consequently, the equipment of small batch production U rib need further improve.

SUMMERY OF THE UTILITY MODEL

To the problem, for solving prior art's defect, an object of the utility model is to provide a mould of steel box girder U rib preparation can effectively solve current equipment production efficiency low, be difficult to guarantee the problem of shaping precision and stress uncontrollable.

For realizing above-mentioned mesh, the technical scheme of the utility model is, a mould of steel box girder U rib preparation, including last mould and bed die, go up the mould and include convex mould and connecting seat, connecting seat lower part center part welding is on the upper portion of convex mould, and end symmetry both sides are the arc surface plush copper under the convex mould, and the bed die includes concave seat, connecting plate and stop device, and the connecting plate welding is in the lower part of concave seat, and stop device symmetry welding is at concave seat up end, and the center part of concave seat is the U type groove that link up, goes up the mould arc surface plush copper and arranges in directly over the U type recess at bed die center, agrees with each other with the bed die down, has the clearance of U rib thickness between the lower terminal surface of convex mould and the recess of concave seat.

The utility model has the advantages of simple and reasonable structure, easy production, easy operation, it is with low costs, make through convex mould and the concave type seat on the mould, can make U rib one shot forming, improved production efficiency and the size is accurate, has shortened the preparation cycle, the workman's that has significantly reduced working strength, respond well, suitable small batch production.

Drawings

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

Fig. 2 is a side view of the present invention.

Fig. 3 is a U-rib structure view (enlarged view) of the present invention.

Fig. 4 is a side view of the U-rib of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

The mould comprises an upper mould and a lower mould, wherein the upper mould comprises a convex section mould 1 and a connecting seat 1-1, the central part of the lower part of the connecting seat 1-1 is welded on the upper part of the convex section mould 1, the symmetrical two sides of the lower end of the convex section mould 1 are provided with raised heads with arc surfaces, the lower mould comprises a concave base 2, a connecting plate 2-1 and a limiting device 2-2, the connecting plate 2-1 is welded on the lower part of the concave base 2, the limiting device 2-2 is symmetrically welded on the upper end surface of the concave base 2, the central part of the concave base 2 is provided with a through U-shaped groove, the raised head with arc surfaces of the upper mould is arranged right above the U-shaped groove in the center of the lower mould and mutually matched with the lower mould, and a gap with the thickness of the U rib 3 is formed between the lower end surface of the convex section mould 1 and the groove of the concave base.

In order to ensure better implementation effect, the connecting seat 1-1 is composed of 3 vertically and uniformly distributed first steel plates 1-1-3, and a second steel plate 1-1-1 and a third steel plate 1-1-2 which are welded at the upper end and the lower end of the first steel plate 1-1-3 and are in horizontal direction, the upper end of the vertical first steel plate 1-1-3 is in an inclined plane shape with a small upper part and a large lower part, and a connecting hole used for being connected with a bolt on a press machine is formed in the second steel plate 1-1-1 at the upper end.

The convex die 1 is square with an arc surface at the lower end, and the arc radius is the same as the arc radius of the bottom of the groove of the concave seat 2.

Two sides of the groove of the concave seat 2 incline towards two sides to form a slope groove shape with a big top and a small bottom, and the inclination angle α is smaller than the inclination angle β of two sides of the U-shaped rib 3.

The height of the convex section mould 1 is greater than the depth of the groove of the concave seat 2, and the height of the U rib 3 is greater than that of the groove of the concave seat 2, and the widths of the bottom of the groove of the convex section mould 1 and the concave seat 2 are the same as that of the bottom of the U rib 3.

The length of the upper die and the lower die in the horizontal direction is greater than that of the U-shaped rib 3.

And the edge part of the connecting plate 2-1 is provided with a connecting hole for fixing with a lower die.

The limiting devices 2-2 are square steel plates, 10 limiting devices are symmetrically welded on the square steel plates, and the limiting devices are uniformly welded on the upper end face of the concave seat 2 and used for positioning the U-shaped rib 3 steel plates.

The utility model discloses at concrete during operation, earlier pass through the laser cutting unloading with the steel sheet of constituteing the U rib, directly guarantee the size, process out the welding groove simultaneously. During manufacturing, the connecting seat at the upper end of the convex die is firstly connected with the press machine through the connecting hole by using a bolt, the concave die is fixed below the position corresponding to the convex die through the connecting hole in the connecting plate, the processed steel plate is placed at the position limiting position of the concave die, the precision requirement of the steel plate in the pressing process is ensured, and the press machine is operated to match the upper die and the lower die to form the steel plate at one time.

The utility model has the advantages of simple and reasonable structure, easy production, easy operation, it is with low costs, make through convex mould and the concave type seat on the mould, can make U rib one shot forming, improved production efficiency and the size is accurate, error control is at 0.2mm +/-. And the fixed die is used for controlling the forming of the formed U-shaped rib, so that an operator can ensure the precision without much experience, the working strength of workers is greatly reduced, the manufacturing period is shortened, the effect is good, the method is suitable for small-batch production, is an innovation in manufacturing the U-shaped rib of the steel box girder, and has good economic and social benefits.

Claims

1. A mould for manufacturing a U rib of a steel box girder comprises an upper mould and a lower mould, and is characterized in that, the upper die comprises a convex die (1) and a connecting seat (1-1), the center of the lower part of the connecting seat (1-1) is welded on the upper part of the convex die (1), the lower end of the convex die (1) is symmetrical to two sides to form raised heads with arc surfaces, the lower die comprises a concave base (2), a connecting plate (2-1) and a limiting device (2-2), the connecting plate (2-1) is welded on the lower part of the concave base (2), the limiting device (2-2) is symmetrically welded on the upper end surface of the concave base (2), the center of the concave base (2) is a through U-shaped groove, the raised head with the arc surfaces of the upper die is arranged right above the U-shaped groove in the center of the lower die, the lower die is matched with the lower die, and a gap with the thickness of the U rib (3) is formed between the lower end surface of the convex die (1) and the groove of the concave die seat (2).

2. The mould for manufacturing the U rib of the steel box girder according to claim 1, wherein the connecting seat (1-1) is composed of 3 vertically and uniformly distributed first steel plates (1-1-3), and a second steel plate (1-1-1) and a third steel plate (1-1-2) which are welded at the upper end and the lower end of the first steel plate (1-1-3) and are in the horizontal direction, the upper end of the vertical first steel plate (1-1-3) is in an inclined plane shape with a small upper part and a large lower part, and a connecting hole for connecting with a bolt on a press machine is formed in the second steel plate (1-1-1) at the upper end.

3. The mould for manufacturing the U rib of the steel box girder according to the claim 1, wherein the convex section mould (1) is square with a circular arc surface at the lower end, and the circular arc radius is the same as the bottom arc radius of the groove of the concave section seat (2).

4. The steel box girder U rib manufacturing clamping fixture according to claim 1, wherein the groove of the concave base (2) is inclined towards two sides to form a groove shape with a large upper part and a small lower part, and the inclination angle α is smaller than the inclination angle β of the two sides of the U rib (3).

5. The mould for manufacturing the U-shaped rib of the steel box girder according to the claim 1, wherein the height of the convex section mould (1) is larger than the depth of the groove of the concave seat (2) and is larger than the height of the U-shaped rib (3), and the widths of the bottom of the groove of the convex section mould (1) and the concave seat (2) are the same as the width of the bottom of the U-shaped rib (3).

6. The mould for manufacturing the U rib of the steel box girder according to the claim 1, wherein the length of the upper mould and the lower mould along the horizontal direction is larger than the length of the U rib (3).

7. The mould for manufacturing the U rib of the steel box girder according to the claim 1, wherein the edge of the connecting plate (2-1) is provided with a connecting hole for fixing with the concave seat (2) on the lower mould.

8. The mould for manufacturing the U rib of the steel box girder according to claim 1, wherein the limiting devices (2-2) are square steel plates, 10 limiting devices are symmetrically welded on the square steel plates, and the limiting devices are uniformly welded on the upper end surface of the concave seat (2) and used for positioning the steel plates of the U rib (3).