Railways – Track layers – Built-up sections
Patent
1995-11-30
1997-09-16
Morano, S. Joseph
Railways
Track layers
Built-up sections
E01B 2902
Patent
active
056668821
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a transport wagon for transporting track panels, comprising a wagon frame which may be supported on on-track undercarriages or alternatively on off-track undercarriages, and which has a loading surface for laying down the track panel.
A transport wagon of this kind is already known from EP 0 276 646 B1 and is used together with an independent lifting device. During the removal of a track panel or a switch, the lifting device--comprising a carrier frame extending in the longitudinal direction of the track--is positioned over the track panel with the aid of the transport wagon, whereupon the carrier frame is supported on the ballast bed by means of two pairs of laterally and vertically adjustable lifting jacks and is simultaneously lifted off the transport wagon. The transport wagon is then removed and the lifting device is lowered onto the track panel by means of the lifting jacks. After the rails have been gripped by vertically adjustable carrier means comprising gripping elements, the carrier frame together with the track panel is raised again with the aid of the lifting jacks. The transport wagon is now moved into the track gap underneath the lifted track panel by means of lowered caterpillar-tracked undercarriages and removes the track panel together with the carrier frame. When a new track panel or a switch is installed, the same procedure takes place in reverse order. With very long track panels, two arrangements of this kind are used, one arranged following the other at a distance therefrom.
Another arrangement of this kind is known from AT 388 000 B which is composed of a lifting device and a transport wagon independently mobile of the said lifting device. The lifting device in this case has two on-track undercarriages--each associated with a pair of lifting jacks--and with the aid of these on-track undercarriages is designed to travel on the track or on the track panel to be removed or installed. The lifting device and the track panel may be loaded together on the transport wagon by means of the lifting jacks.
Another track maintenance machine disclosed in DE 34 19 205 C2 for laying and removing track panels essentially consists of an elongated carrier frame composed of two frame sections arranged one following the other in the longitudinal direction of the track and joined together by means of a universal joint. The beam-shaped frame is provided at either end and also at the articulation point with a vertically adjustable on-track undercarriage and a caterpillar-tracked undercarriage and is thereby able to travel both on the track and on the ballast bed of a track construction site, the track panel being gripped by vertically adjustable gripping devices and being lifted or lowered.
The object of the present invention is now to provide a transport wagon of the type previously defined which is suitable specifically for transporting very long track panels, more particularly switch sections in association with their installation in or removal from the track.
This object is achieved according to the invention with a transport wagon specified in the introduction in that the wagon frame is composed of a main frame part comprising two on-track undercarriages and two off-track undercarriages and at least one auxiliary frame connected to the main frame part by means of a universal joint, the said auxiliary frame having at its end remote from the joint an on-track undercarriage and a vertically adjustable off-track undercarriage.
With this advantageous combination of features, even very long track panels which have already been preassembled at the factory for quality optimization reasons may for the first time be transported without difficulty, and this transport may be implemented without conversion work from the loading site to the trackless renewal gap or in the opposite direction. With the arrangement both of an on-track and an off-track undercarriage in the articulation region, the said articulation region may be automatically centred over the track axis both in the renewal gap
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patent: 4773332 (1988-09-01), Theurer et al.
patent: 4784063 (1988-11-01), Theurer et al.
patent: 5108955 (1992-04-01), Hawryszkow et al.
patent: 5127335 (1992-07-01), Whitaker, Jr.
patent: 5231929 (1993-08-01), Theurer et al.
ETR Eisenbahntechnische Rundschau, vol. 38, No. 3, Mar. 89 Darmstadt, pp. 145-149: MISAR: "Zweiwegefahrbare Weichenumbasumaschine".
Brunninger Manfred
Theurer Josef
Franz Plasser Bahn-baumaschinen-Industriegesellschaft m.b.H.
Morano S. Joseph
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