A method for waterproofing of bridges (1) and similar structures aimed at railway traffic is described, the structures comprising an arch or deck structure, on which there is placed a ballast (M) of gravel or crushed stone (2) upon which the tracks (6) extend between the two ends of the bridge (1). The waterproofing is obtained first by the removal of the tracks (6) and a reduced layer (S) of gravel or crushed stone (2), leaving in place the remaining part of gravel or crushed stone (2), and then by laying one or more sheets (10) of cured rubber on the remaining part of gravel or crushed stone (2). The thickness of the rubber is such as to be sufficiently resistant to perforation by the gravel or crushed stone (2), which is subsequently placed thereon to complete the ballast, Finally, the previously removed tracks (6) are set in place again. According to the method, a joint is made between the sheets (10) by means of a connection of mechanical type, with a positive locking shape fit, or a chemical bond using a suitable adhesive.

A machine having a ballast take-up device (5) for taking up ballast located underneath a track has an endless clearing chain (8) guided in a chain channel (14). In a connecting joint (18) from a transverse channel (15) to a transport channel (17), a ballast deflector blade (20) pivotable about a pivot axis (19) is fastened. Arranged on said ballast deflector blade (20) is a ballast conveyor (24), designed for ballast transport in the direction towards a pivot axis (19) by means of a conveyor drive (23). With this, it is possible to expand the operating range of the ballast take-up device, as needed.

A machine having a ballast take-up device (5) for taking up ballast located underneath a track has an endless clearing chain (8) guided in a chain channel (14). In a connecting joint (18) from a transverse channel (15) to a transport channel (17), a ballast deflector blade (20) pivotable about a pivot axis (19) is fastened. Arranged on said ballast deflector blade (20) is a ballast conveyor (24), designed for ballast transport in the direction towards a pivot axis (19) by means of a conveyor drive (23). With this, it is possible to expand the operating range of the ballast take-up device, as needed.

In the course of rehabilitation of a ballast bed of a track, while creating a track construction site (10), old bulk material (6) to be removed is stored on a plurality of storage wagons (2) connected to form a loading train (7). Parallel thereto, new bulk material (9) pre-deposited on a plurality of storage wagons (2) connected to form a loading train (8) is introduced into the track construction site (10). The introduction of the new bulk material (9) into the track construction site (10) is controlled automatically in dependence on a volume of the old bulk material (6) removed from the track construction site (10).

In the course of rehabilitation of a ballast bed of a track, while creating a track construction site (10), old bulk material (6) to be removed is stored on a plurality of storage wagons (2) connected to form a loading train (7). Parallel thereto, new bulk material (9) pre-deposited on a plurality of storage wagons (2) connected to form a loading train (8) is introduced into the track construction site (10). The introduction of the new bulk material (9) into the track construction site (10) is controlled automatically in dependence on a volume of the old bulk material (6) removed from the track construction site (10).

The invention relates to a machine with a ballast receiving device for receiving ballast located under a track by means of an endless excavating chain guided in a chain channel, with the chain channel being composed of a transverse channel which can be positioned under the track, an empty channel, and a transport channel provided for ballast transport. A conveyor device for transporting ballast in the direction of the transport channel is arranged along a top edge of the transverse channel. This additional device increases the movement of the ballast so that it completely enters the transport channel.

The invention relates to a machine with a ballast receiving device for receiving ballast located under a track by means of an endless excavating chain guided in a chain channel, with the chain channel being composed of a transverse channel which can be positioned under the track, an empty channel, and a transport channel provided for ballast transport. A conveyor device for transporting ballast in the direction of the transport channel is arranged along a top edge of the transverse channel. This additional device increases the movement of the ballast so that it completely enters the transport channel.

A support (32) adapted to be used in place of ballast in supporting a rail support member (31) of a rail track comprises a body (50). The body (50) includes a lower face (70) for resting on a support surface, and an upper surface (71) for supporting the rail support member (31).

In the course of rehabilitation of a ballast bed of a track, while creating a track construction site (10), old bulk material (6) to be removed is stored on a plurality of storage wagons (2) connected to form a loading train (7). Parallel thereto, new bulk material (9) pre-deposited on a plurality of storage wagons (2) connected to form a loading train (8) is introduced into the track construction site (10). The introduction of the new bulk material (9) into the track construction site (10) is controlled automatically in dependence on a volume of the old bulk material (6) removed from the track construction site (10)

In the course of rehabilitation of a ballast bed of a track, while creating a track construction site (10), old bulk material (6) to be removed is stored on a plurality of storage wagons (2) connected to form a loading train (7). Parallel thereto, new bulk material (9) pre-deposited on a plurality of storage wagons (2) connected to form a loading train (8) is introduced into the track construction site (10). The introduction of the new bulk material (9) into the track construction site (10) is controlled automatically in dependence on a volume of the old bulk material (6) removed from the track construction site (10)