CN1424472A - Manufacture for metal thin-wall non-ripple arch shell and arch strips - Google Patents

Abstract

A technology for manufacturing the metallic thin-wall arch shell without corrugations and its arch strips is disclosed. Said arch shell is composed of the arch strips, which is an arched long slot having both side walls with the flanged top for matching between adjacent arch strips. It is made up through shearing, rolling to form slot, rolling again for shaping and filanging. Its advantages are high load bearing power, less consumption of raw material and low cost.

Description

The manufacture method of metal thin-wall non-corrugated arched shell and arch bar thereof

Technical field

The present invention relates to a kind of building structure, particularly a kind of arch shell structure; The manufacture method that also relates to the used arch bar of arch shell.

Background technology

Because the special mechanical properties that has of arch shell structure and the characteristic of lighter weight, make the span of arch shell can be very big, architectural in some large-sized workshops, garage etc., use the arch shell usually and make the roof.As shown in Figure 1, present arch shell shuts out many horizontal ripples in order to make arc on the arch bar base plate that constitutes whole arch shell, constitutes arc so that encircle minister bottom weak point on the bar.But this arch bar has a shortcoming, owing to extruding ripple its supporting capacity is reduced along the length direction that encircles bar.In recent years, collapse accident repeatedly appears in this Structural Engineering, and only promptly collapse more than 30 engineering in the whole nation in 2000.

Summary of the invention

The object of the present invention is to provide a kind of metal thin-wall non-corrugated arched shell, to solve the not enough problem of bearing capacity that above-mentioned ripple arch shell exists, the bearing capacity of the more existing ripple arch of the bearing capacity of this arch shell shell is strong more than 3 times, and steel using amount is few, and cost is low.

Another object of the present invention is to provide a kind of manufacture method of above-mentioned metal thin-wall non-ripple arch bar.

In order to achieve the above object, metal thin-wall non-corrugated arched shell of the present invention has adopted following structure: the metal thin-wall non-corrugated arched shell is made of a plurality of arch bars that are interlocked, its arch bar is an elongated slot, the elongated slot side walls has been rolled into the transverse shape of upper-thin-lower-thick, the side wall upper part of elongated slot has flange, and the length direction of whole elongated slot is an arc.

In order further to increase the integrated carrying ability of arch shell, can increase a reinforcement arch bar every several arch bars in the engaged flange between adjacent arch bar.Arch bar can be than arch bar height to hang objects such as light fixture, light-duty pipeline.

The following method manufacturing of arc arch strip adoption of above-mentioned metal thin-wall non-corrugated arched shell:

(1) metal sheet will be become required bar shaped with plate shearing machine;

(2) strip metal plate is rolled into the long lath of rising as high as the banks;

(3) two sidewall edge to the long lath of rising as high as the banks roll, and roll into the shape of upper-thin-lower-thick, and sidewall edge extends and forms the arc-shaped slot lath;

(4) arc-shaped slot lath edge is shut out the flange of a definite form.

Above-mentioned manufacturing process can be made shaping continuously on automatic assembly line.

The flange of metal thin-wall non-ripple arch bar side wall upper part overlaps mutually to be interlocked and constitutes the arch shell roof in a large span room layer or factory shop, because the bottom of metal thin-wall non-corrugated arched shell does not have ripple, make its supporting capacity be greatly improved, and owing to there is not ripple not only easy to process, the material usage of the arch shell that also makes reduces, and has reduced cost.By between the arch bar, increasing arch bar, its supporting capacity is further strengthened.Make its formation arch shell that extends naturally owing to carry out backing by sidewall to metallic channel, so processing technology has Bao Wen arch shell simple, the production efficiency height, cost is low.

Description of drawings

Fig. 1 is the arch bar stereogram of the metal thin-wall ripple arch shell of prior art;

Fig. 2 is the arch bar stereogram of metal thin-wall non-corrugated arched shell of the present invention;

Fig. 3 is the sectional view of the arch bar of metal thin-wall non-corrugated arched shell shown in Figure 2.

Fig. 4 is the arch bar connected mode structure chart among the embodiment 1;

Fig. 5 is the arch bar connected mode structure chart among the embodiment 2;

Fig. 6 is a metal thin-wall non-corrugated arched shell production principle schematic diagram of the present invention.

The specific embodiment

Be described further below in conjunction with the arch bar structure of accompanying drawing metal thin-wall non-corrugated arched shell of the present invention.

As shown in Figure 2, the arch bar of metal thin-wall non-corrugated arched shell of the present invention is the elongated slot of an arc, does not have transverse wave on the elongated slot.As shown in Figure 3, the sidewall of this metal thin-wall non-ripple arch bar has been rolled into the cross sectional shape of upper-thin-lower-thick, also has flange to the right on top, two side, and the flange bottom on right side also has an inside flanging, so that the mutual interlock of flange of two adjacent arch bars.

Embodiment 1

Metal thin-wall non-corrugated arched shell in the present embodiment is formed by connecting by a plurality of metal thin-wall non-ripple arch bars as shown in Figure 3, and as shown in Figure 4, the flange of adjacent arch bar 1,2 fastens and stings together.

Embodiment 2

In the present embodiment, for further strengthening the supporting capacity of whole metal thin-wall non-corrugated arched shell, as shown in Figure 5, interlock place of encircleing the flange of bars 3,4 at two adjacent metal thin-wall non-ripples also accompanies an arc arch bar 5.

As shown in Figure 6, at first metal sheet is cut out in the manufacturing process of metal thin-wall non-corrugated arched shell, made it to become required strip; Then roll bending is carried out on strip metal sheet both sides and become elongated slot; By roller the sidewall of long trough is carried out the shape that backing becomes upper-thin-lower-thick then, side wall upper part can extend by nature when backing, makes its top elongated, naturally the formation arc; To the sidewall edge crimping of arch elongated slot, become metal thin-wall non-corrugated arched shell of the present invention, and do not need to shut out ripple in the bottom then, easy to process so this arch bar supporting capacity is strong, cost is low.

Claims (3)

1, a kind of metal thin-wall non-corrugated arched shell, be made of a plurality of arch bars that are interlocked, it is characterized in that: its arch bar is an elongated slot, and the elongated slot side walls has been rolled into the transverse shape of upper-thin-lower-thick, the side wall upper part of elongated slot has flange, is arc on the length direction of whole elongated slot.

2, metal thin-wall non-corrugated arched shell as claimed in claim 1 is characterized in that: a reinforcement arch bar that can further improve bearing capacity is arranged in the engaged flange between above-mentioned adjacent arch bar.

3, the manufacture method of the arch bar of metal thin-wall non-corrugated arched shell as claimed in claim 1 is characterized in that comprising following process:

(1) metal sheet will be become required bar shaped with plate shearing machine;

(2) strip metal plate is rolled into the long lath of rising as high as the banks;

(3) two sidewall edge to the long lath of rising as high as the banks roll, and roll into the shape of upper-thin-lower-thick, and sidewall edge extends and forms the arc-shaped slot lath;

(4) arc-shaped slot lath edge shuts out the flange of a definite form.

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