Sig Societe Industrielle Suisse

Franz Plasser Bahnbaumaschinen-industrie-gesellschaft Mbh

Matisa Materiel Industriel S.a.

Jorg Ganz

Johann Hansmann

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.

Auxiliary railroad track lifting installation

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. The machine further comprises a tool-carrying frame, an undercarriage supporting the tool-carrying frame on the track, the tool-carrying frame supporting undercarriage being widely spaced from the main frame supporting undercarriage and the projecting main frame portion being longitudinally displaceably supported on the tool-carrying frame, a drive for intermittently advancing the tool-carrying frame, tie tamping and track position correcting tools mounted on the tool-carrying frame within sight of the operator's cab, the tools including drives for operating the tools and the drives being actuated by the control arrangement, and a track position reference system connected to the control arrangement for actuating the drives of the track position correcting tools in response to the track position detected by the reference system.

Continuously advancing track leveling, lining and tamping machine

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.

Railway track tamper

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).

Railway track tamping machine

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.

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).

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Etoy, Switzerland

Jorg Ganz