The invention relates to a mobile bridge system with at least one bridge section comprising two articulatedly interconnected parts, and a bridge laying vehicle provided with a lifting frame pivotably resting thereon, carrying a lowering frame guiding a laying cable and hydraulically pivotable from the horizontal transportation position into a vertical laying position, one part of the bridge section during the transportation thereof resting with downwardly directed roadway surface locked to and resting on the lifting frame. Such a mobile bridge system is known from DE 31 45 582 A1.
The known mobile bridge system suffers from the disadvantage that it is unsuitable for erecting a link bridge, i.e. a mobile bridge comprising several bridge sections. It is also disadvantageous that the bridge section length is only slightly longer than the bridge laying vehicle loading surface and several bridge sections cannot be placed on one another.
Therefore the problem of the invention is to provide a mobile bridge system enabling the erection of a bridge comprising several sections, each section being significantly longer than the loading surface of the bridge laying vehicle.
The invention solves this problem in that the other part of the bridge section during the transportation thereof rests with upwardly directed roadways surface on one part, the lowering frame being displaceably fixed to and beyond the free end of the lifting frame and the other part of the bridge section is provided in the vicinity of its free end with outwardly pivotably mounted, length-adjustable trestle legs.
The bridge laying vehicle is to be provided with a vehicle support fixed to its rear end. The two parts are to have an identical construction, so that it is possible for the bridge laying vehicle to take up the bridge on the other bank of the watercourse to be bridged.
The invention also relates to a method for laying a mobile bridge of a mobile bridge system having the following method steps:
The invention is explained hereinafter relative to the drawings showing the different stages of laying the mobile bridge in side view as follows:
In the transportation position a first part 12a of bridge section 12 rests with downwardly directed roadway surface on lifting frame 18 being twice locked thereto, whilst the other part 12b of bridge section 12 in the transportation position rests on the first part 12a with upwardly directed roadway surface.
The other part carries on its surface opposite to the roadway surface length-adjustable trestle legs pivotable to the other part 12b, which has a winch for adjusting the trestle leg length.
At its rear end the bridge laying vehicle 10 is provided with a pair of vehicle supports 20, which are only shown in
The two parts 12a, 12b have an identical construction, but only the other part is provided with trestle legs.
In
In this position the length of the trestle legs 22 provided with a bracing tube 26 articulatedly locked to the other part 12a by claws 28 is so adjusted by means of a not shown trestle leg winch in the vicinity of the distal end of the other part 12b that on reaching the bottom of the watercourse to be bridged a horizontal course of the roadway is ensured. The bridge section is then pivoted down further until the trestle legs reach the bottom of the watercourse.
The taking up of the bridge section occurs in corresponding reverse order, the trestle legs on whose bracing tube the other part of the last laid bridge section is deposited remains locked thereto and the locking thereof with the other part of the previously laid bridge section is released.
The adjustability of the spacing of the roadways forming parts 12a, 12b is not shown in the drawings.
Number | Date | Country | Kind |
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10 2005 003 044.0 | Jan 2005 | DE | national |
This application claims the benefit of International Application No. PCT/DE2005/002211 filed Dec. 8, 2005, pending.
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/DE05/02211 | 12/8/2005 | WO | 00 | 7/20/2007 |