US 10,780,898 B2 · Track maintenance machine with an autonomous and redundant power supply and method for operating an energy supply system of a track maintenance machine

Abstract

A track maintenance machine includes a machine frame being movable on a track, a plurality of working units, and a combustion engine to be connected by a clutch to a transfer case. Hydraulic pumps for supplying a plurality of hydraulic drives of a hydraulic system are connected to the transfer case. An electric motor is provided as an alternative drive of the transfer case for permanent energy supply of the working units and drives. The electric motor is coupled to an intermediate circuit to be supplied with electric energy by a vertically adjustable pantograph to be applied to a catenary of the track. A generator or an electric energy storage device is provided for alternative energy supply of the intermediate circuit. A method for operation of an energy supply system is also provided.

Claims8

Dependent claims

A track maintenance machine, comprising:

a machine frame being movable on a track having a catenary;
a plurality working units;
a combustion engine;
a transfer case;
a clutch for connecting said combustion engine to said transfer case;
a hydraulic system having a plurality hydraulic drives;
hydraulic pumps for supplying said plurality of hydraulic drives, said hydraulic pumps being connected to said transfer case;
an electric motor provided as an alternative drive of said transfer case for permanent energy supply of said plurality of working units and said plurality of drives;
an intermediate circuit coupled to said electric motor;
a vertically adjustable pantograph to be applied to the catenary for supplying said intermediate circuit with electric energy;
and
a generator or an electric energy storage device for an alternative energy supply of said intermediate circuit.

9 more elements

A method for operating an energy supply system for actuation of a plurality of working units and drives of a track maintenance machine being movable on a track having an electrical catenary, the method comprising the following steps:

using a combustion engine or an electric motor fed by the catenary to supply the plurality working units and drives with energy;
using a control device in a load operation permanently supplying the working units and drives with energy for changing over between the combustion engine and the electric motor;
automatically passing over a transfer point of the catenary under load operation after activation of the control device by:
changing over the energy supply from the electric motor to the combustion engine before the transfer point;
and
changing over the energy supply from the combustion engine to the electric motor after passing over the transfer point.

3 more elements

Dependencies are inferred from the claim text.

Track maintenance machine with an autonomous and redundant power supply and method for operating an energy supply system of a track maintenance machine

Life of this patent

Track maintenance machine with an autonomous and redundant power supply and method for operating an energy supply system of a track maintenance machine

Life of this patent

Abstract

Claims8