Abstract: A system (10) for sieving ballast comprises a first sieve (26) and a second sieve (28) which is located behind the first sieve (26) in a first direction (100). A discharge collection conveyor (32.1) is located directly under a first discarded ballast outlet (42) of the first sieve (26) in order to collect a flow of discarded ballast which comes from the first sieve (26) and to convey it in a second direction (200) counter to the first direction (100). A rerouting collection conveyor directly collects the flow being discharged from a clean ballast outlet of the second sieve in order to convey it in the first direction (100). The rerouting collection conveyor extends under the first sieve (26) at a lower height than the discharge collection conveyor.

Abstract: In a method for renewing sleepers of a track formed of rails and the sleepers, the placement of skids, which support a machine frame of a track-building machine on the sleepers, is preceded by the machine frame being intermediately supported on the sleepers. The two rails are then distanced from one another, while avoiding a breakage separation, in a track section that includes both the region of the skids and the intermediate support. After supporting the machine frame on the skids, the intermediate support is lifted off the sleepers and work is begun.

Abstract: A machine for renovating a track includes the following: a transverse chain segment of an excavating chain is designed shorter than a crosstie length of new crossties. A ballast plow is disposed relative to a longitudinal machine axis between the transverse chain segment of the excavating chain and the device for placing the new crossties. A width—extending normal to the longitudinal machine axis—of the ballast plow is designed greater than the crosstie length of the new crossties.

Abstract: A machine for renovating a track includes the following: a transverse chain segment of an excavating chain is designed shorter than a crosstie length of new crossties. A ballast plow is disposed relative to a longitudinal machine axis between the transverse chain segment of the excavating chain and the device for placing the new crossties. A width—extending normal to the longitudinal machine axis—of the ballast plow is designed greater than the crosstie length of the new crossties.

Abstract: The invention relates to a gantry crane of a machine, for the exchange of sleepers on a track, which may be displaced in a machine longitudinal direction on crane tracks. Two crane buggies on the gantry crane, at a separation from each other in the machine transverse direction are embodied such as to be displaced relative to the crane chassis by means of a displacement drive for altering the gauge. The corresponding crane tracks may be adjusted in the track transverse direction by drives to change the gauge.

Abstract: The invention relates to a device for the disassembly of a rail anchor, connecting a rail to a sleeper of a track, comprising two opposing tool levers, connected by a rod, operated with displacement about a pivot axis by means of a press drive. A first tool lever is connected to the press drive, coupled to the tool frame. A further tool lever is defined at an upper end by the pivot axis.

Abstract: A gantry crane is equipped with devices for transporting old and new ties and with pads, which are provided for spacing the new ties. The device for transporting the pads is provided in the form of pincers having two pincer parts that can be displaced relative to one another in a manner that is normal to a longitudinal direction of the frame. The device for transporting the new ties is located between the device for transporting the pads and the device for transporting the old ties.

Abstract: A storage car for storing bulk material contains a car chassis which may be optionally supported on rail-bound carriages or non-rail-bound carriages. A floor conveyor belt, runs in a car longitudinal direction and is disposed in a storage container. A transfer conveyor belt is disposed at an angle extending over a front end of the car chassis. At a rear end of the floor conveyor belt with relation to a transport direction, the storage car has an excavator device for picking up and removing the bulk material onto the floor conveyor belt. The excavator device is arranged outside the storage container and contains an adjustable grab operated by actuators. The excavator device further contains a take-up conveyor belt with a low take-up end and an ejection end positioned above the floor conveyor belt.

Abstract: The invention relates to a device for the disassembly of a rail anchor, connecting a rail to a sleeper of a track, comprising two opposing tool levers, connected by a rod, operated with displacement about a pivot axis by means of a press drive. A first tool lever is connected to the press drive, coupled to the tool frame. A further tool lever is defined at an upper end by the pivot axis.

Abstract: The invention relates to a gantry crane of a machine, for the exchange of sleepers on a track, which may be displaced in a machine longitudinal direction on crane tracks. Two crane buggies on the gantry crane, at a separation from each other in the machine transverse direction are embodied such as to be displaced relative to the crane chassis by means of a displacement drive for altering the gauge. The corresponding crane tracks may be adjusted in the track transverse direction by drives to change the gauge.

Abstract: A measuring vehicle (V) allows the geometric condition of a railway track to be measured in relation to its theoretical configuration. In comprises a rigid chassis (9) making up the measuring base, supported by runners (10, 11,12) and a probing device (13, 14, 15) which takes the bearings of the geometric configuration. The probing device allows the degradation of the geometric configuration found to be determined. The chassis (9) is provided with opto-electronic means (21, 22, 23, 24, N) laid out to measure the elastic degradation of the chassis (9) while travelling on the track (R). The values for deformation of the chassis (9) are passed to the probing device to correct the values of the geometric configuration found.

Abstract: An auxiliary railroad track lifting assembly for assisting conventional lifting grippers of a railroad track construction machine, especially a tamper, in lifting a switchgear unit includes a lifting device carried by an arm articulated, at its end remote from the lifting device, on a carriage movable along a rail fastened to the flank of the machine. The assembly permits displacement of the construction machine between at least two successive tamping position in the longitudinal direction of the track with the auxiliary assembly remaining stationary.

Abstract: A continuously advancing machine for track leveling, lining and tamping comprises a main frame, a single undercarriage supporting the main frame and the main frame having a portion projecting in the track direction from the single undercarriage, a drive connected to the single undercarriage for continuously advancing the main frame in an operating direction, a brake connected to the single undercarriage for stopping the advancing main frame, and an operator's cab, a control arrangement and a power plant mounted on the continuously advancing main frame.

Abstract: A tamper has tamping tools intended for tamping the open track and the switch gear. Each tool is mounted on an oscillating and pivoting lever (6) and has a fixed pick (20) and a pick (21) displaceable by pivoting in a plane transverse to the track around a shaft (23) which is rigidly connected to the lever (6) and by means of a cylinder (26). The tappets (22) of these picks are offset and partially cover one another in the close-together position and the picks are arched towards the outside so as to leave sufficient space between them for the flow of the ballast above the tappets. The switch gear is tamped in close-together position of the tappets over a reduced length (R) and the open track is tamped in spaced position over a greater length, the stroke of the cylinder (26) limiting and defining these two positions.

Abstract: Each tamping unit of the tamping machine has a gantry (6) which is inclinable transversely to the track and in which the tool holder (3) is mounted for vertical movement.The amplitude of the downward movement of the tool holder (3) is regulated by a device (16 to 21) controlled by a command level corresponding to the depth of tamping desired.In order to correct the differences (E) between the depth of tamping reached and that desired which are caused by the inlination of the gantry (6), the command level is lowered by a distance substantially equal to the differences by a correction device comprising a mechanical feeler (25) for detecting the inclination of the gantry (6) and a mechanical connection (26, 34) connecting the said feeler to the sensitive member (16) of the regulating device in order to vary the zero thereof.In a variant, this correction device is formed of an electronic circuit which permits the cancelling of the differences (E).

Abstract: The tamping machine has two tamping units (2,3) which are inclinable transversely to the track in order to tamp the track switches.Each of these tamping units is articulated at its upper part on a slide (18) which is displaced by a cylinder-piston unit (19) on a transverse slideway (16) fastened on a rigid frame (6). This frame is mounted for pivoting around a vertical axis (X) on two brackets (7, 8) fastened to the frame (1) of the tamping machine.The inclination of each tamping unit is coordinated with its translation on the slideway (16) by a rod (32) which connects an element (30) of the tamping unit to the chassis (1) so as to reduce the differences in tamping depth caused by the transverse displacement of the tools (25).The lower portion of the tamping units comprises an arm (34) engaged in a curved slideway (23) fastened to the frame (6) in order to transmit the longitudinal tamping forces to the latter.

Abstract: A device comprising two pivoting tamping tools of lever form (9) which are mounted in opposition on a vertically movable housing (1).Each tool (9) has a bearing (15) force-fitting on an eccentric surface of a rotary shaft (17) on which a regulating flywheel (19) having a peripheral toothing is fixed within the housing (1).The two flywheels (19) engage with each other via their toothing and one of them also meshes with a pinion (22) which is driven by a motor (21).The pivoting of the two tools (9) is controlled, in phase opposition, by two cylinder-piston units (12).A lubricating circuit, driven as a result of the stirring of a bath of oil by the flywheels (19) and of centrifuging by an imbalance weight, is established through the bearings of the rotary shaft (17).