FI117448B - Ultra light closed bridge - Google Patents

Description

117448

Ultra light closed bridge

The invention relates to a new type of closed I according to claim 1

a bridge structure that can act as a pipe bridge, conveyor bridge or walkway bridge.

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The invention also relates to a method for making a bridge structure.

Currently, the structure of closed bridges is as follows. The load-bearing structure is the frame structure and its surrounding walls, floor and roof structures. Typically, they are 10 heavy structures and require bridge support over short spans.

The object of the present invention is above all to provide a simple, prefabricated tunnel structure that is rigid and stable, easy to transport and install, and has a large span of support points. ΐ 15 i

The invention is based on the fact that the bridge is formed from an inner sheath and an outer sheath made of a thin-walled steel sheet and thin-walled steel pipes inserted between them, which act as a supporting and stiffening structure.

One preferred embodiment of the invention is based on the fact that the structure is made by laser welding.

More specifically, the bridge structure according to the invention is characterized in what is stated in the characterizing part of claim 1.

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The method of manufacturing the bridge structure according to the invention, in turn, is characterized by what is disclosed in the characterizing part of claim 4.

The embodiments of the invention provide significant advantages.

The invention is applicable to the transport of liquid, gaseous and solid materials V. * and as a light traffic bridge. The enclosed bridge is neat in appearance. % · * · .. By integrating thin-walled tubes for utility use between bridge shells, a t ii. which carry fluid, gas, mist, vapor, or are pneumatic transfer tubes, are * * 35 an ultra-light but very rigid bridge construction. Bridge:: net weight, ie the material to be moved, compared to gross weight, ie the weight of the bridge together; ·. with the material to be moved is exceptionally advantageous as well as the span of the required anchor points. The bridge has an extraordinarily lightweight structure that saves structural materials I ·. The closed bridge is made as a laser welded steel structure. : 40 Bridge-reinforcing tubes are used to transfer the desired ones to the utility. materials. In addition, material savings will occur when a long span reduces the amount of support.

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The invention will now be described by way of example and with reference to the accompanying drawings.

45 ···. Figure 1 shows a bridge according to the invention, a pipe bridge.

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Figure 2 shows another bridge according to the invention, a conveyor bridge.

• ·· ·. #. * 50 Figure 3 shows a third bridge, a walkway bridge according to the invention.

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The closed bridge has an outer sheath 1 and an inner sheath 2 and can be made round or 4 ellipses. Between the sheaths 1,2, 'integrated pipes' are used for' recovery pipes': 5 - liquid pipes 3, 'gas pipes 4, - air pipes 5, - pneumatic transmission lines 6, pipe-specific condensate drain pipes 7, 10 - closed bridge sewer pipe 8, sprinkler tube 9, closed bridge lighting tube 10, cable replacement shelves 11,12 for automation and power cables, 15 - tubes requiring other support structures such as hoses, cables and cords

The enclosed bridge is neat in appearance. ; An integral part of the closed bridge comprises the inner sheath 2 and the outer sheath 1 and, when integrated therebetween, utilization tubes 3-12 which at the same time act as a supporting and stiffening structure for the whole integrated structure. : 25 The casing 1,2 is made of thin-walled steel sheet and tubes 3-12 are thin-walled steel tubes. The construction is made possible by automatic laser welding technology.

Closed bridges are dimensioned, furnished and constructed to suit each application 30.

Figure 1 shows a tubular bridge with an outer sheath 1 formed oval and an inner sheath 2 circular. Thus, the distance between the outer sheath 1 and the inner sheath 2 is greater at the ends of the oval than at the sides. At the upper end of the tube bridge at the other end of the outer sheath 1 of the oval 35 is a large diameter integrated gas pipe 4.

The distance between the outer sheath 1 and the inner sheath 2 decreases towards the center of the oval outer sheath 1: and at the same time the diameter * ". * Of the tubes between the sheaths 1, 2 decreases. pneumatic transmission line 6, automation cable conduit 11, 40 electrical cable conduit 12, and condensate water conduit 9 and integrated process conduits 17.

Further, there is a space 13 between the diapers for the pipe lance or passage. The space inside the inner sheath 2 * ·:. * Is divided by the primary bracket 14, above which is located a heat-insulated hot pipe 15. Below the primary bracket 14 there are mounting locations for the separate pipes 16.

45 • ·. ···. In the passageway of Figure 2, both the inner sheath 1 and the outer sheath 2 are oval shaped so that the distance between them is the same across the cross-section. The space between them is: sprinkler tube 9, fiber optic tube 10 with light holes inside window element 18, tunnel drain pipes 8, and automation and * ··· * 50 electrical cable pipes 11, 12. The oval formed by the sheaths 1,2 has' · 3.

The supply air duct 19 and the exhaust air duct 20 have a larger diameter than the space between the diapers 1, 2, so that they extend into the inner sheath 2 and the inner sheath 2 is secured to these pipes 19,20. In the space formed by the inner jacket, a pedestrian bridge 21 is provided for passenger traffic.

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The conveyor bridge of Figure 3 again uses a combination of an oval outer sheath 1 and a round inner sheath 2. The largest pipes, i.e. the dust extraction pipe 22 and the heating air pipe 23, run along the sides of the bridge, where the largest distance is between the shells 22, 23. In addition, the tunnel drain pipe 8, the sprinkler pipe 9, the fiber optic cable 10, and the automation and electrical cable installation pipes U, 12 pass between the diapers 1 and 2. The space inside the inner diaper 2 is divided by a partition 24 with a walkway 21 on one side and a conveyor belt. 25.

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Claims (5)

117448 Closed bridge comprising an outer jacket (1) and an inner jacket (2) characterized in that between the diapers (1,2) there are utilized tubes (3-12) welded to the diaphragm plates (1,2) along their entire length and form part of the bearing structure of a closed bridge. Bridge according to Claim 1, characterized in that the tubes (3-12) are welded to the jacket plates (1,2) by laser welding. 10 Bridge according to one of Claims 1 or 2, characterized in that the outer shell (1) of the bridge has an oval cross-section and the inner shell (2) has a circular cross-section, leaving a variable cross-sectional distance between the shells. A method for manufacturing a closed bridge comprising forming the outer shell (1) and inner shell (2) of a steel sheet, characterized in that the outer shell (1) and the inner shell (2) are joined to each other in a rigid structure by welding thereon tubes (3-12). along the entire length. 20 ♦ · · ** ** ** ** ** ** ** ** ** ** ** ** ** · · · · · - * - - - - · · ·· ♦ ♦ · * 1 2 3 4 5 1 • · ··. '', J • # · • · # 1 · 1 • «· e 2 ·« 1 '· 3 • · • 5 e ·····' • · 117448 5: Patent krav:; ; .