Trackless, center articulation underground vehicle driven by an electric motor
First Claim
1. In a trackless, center-pivot underground vehicle having a tractor section which is driven by an electric motor powered via a sliding contact line, a current collector device movable along said line, and a supply cable electrically and mechanically connected to said current collector device, the improvement which comprises in combination:
- a first slip ring member rotatable about a vertical axis connecting said supply cable to the current collector device;
a helically winding cable reel mounted on the tractor section and rotatable about a vertical axis and provided with a second slip ring member;
a guide arm coaxially arranged with respect to the cable reel and adapted to be pivotally movable by hydraulic means; and
a hydrostatic axial piston transmission is coupled to a motor for driving said vehicle, said motor being a three-phase a.c. motor.
1 Assignment
0 Petitions
Accused Products
Abstract
A trackless, center-pivot underground vehicle is described, which has a tractor section, which is driven by an electric motor, which is powered via a sliding contact line, a current collector device, which is movable along the contact line line, and a supply cable, which is electrically and mechanically connected to the current collector device and adapted to be unwound from a reel against a restoring force. An improved mobility of the vehicle and a large width range throughout the range of travel are ensured by the combination of the following features:
a. the supply cable is connected to the current collector device by a slip ring member, which is rotatable about a vertical axle;
b. a helically winding cable reel is mounted on the tractor section and rotatable about a vertical axle, which is provided with a slip ring member;
c. a guide arm is coaxially arranged with respect to the cable reel and adapted to be pivotally movable by hydraulic means; and
d. a hydrostatic axial piston transmission is coupled to a three-phase a.c. motor.
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Citations
8 Claims
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1. In a trackless, center-pivot underground vehicle having a tractor section which is driven by an electric motor powered via a sliding contact line, a current collector device movable along said line, and a supply cable electrically and mechanically connected to said current collector device, the improvement which comprises in combination:
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a first slip ring member rotatable about a vertical axis connecting said supply cable to the current collector device; a helically winding cable reel mounted on the tractor section and rotatable about a vertical axis and provided with a second slip ring member; a guide arm coaxially arranged with respect to the cable reel and adapted to be pivotally movable by hydraulic means; and a hydrostatic axial piston transmission is coupled to a motor for driving said vehicle, said motor being a three-phase a.c. motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification