Patent ID: 7213714
Filing Date: 2007-05-08
Classification: B66C

Abstract:
1. A remotely controlled slack pulling carriage for movement along a suspended cable which comprises: a chassis containing an internal combustion power plant, and an electrical system which comprises a battery, electric starter and alternator for starting and operation of said power plant, and a main hydraulic pump with variable displacement, mechanically driven by said power plant, and which is, in-turn, connected to a hydraulic motor in a closed hydraulic loop, and a secondary hydraulic pump, smaller than the main hydraulic pump, for pumping hydraulic fluid into a solenoid control manifold, and a sheave pressure roller assembly and controlling actuator to bring said sheave pressure roller assembly in or out of contact with an opposing sheave roller, to effectively allow the sheave pressure roller to engage feed or disengage feed to a skidline cable, and a skyline cable clamp assembly and controlling actuator to clamp or un-clamp said carriage to a skyline cable, and a skidline cable clamp assembly and controlling actuator to clamp or un-clamp said carriage to a skidline cable, and a radio subsystem that facilitates remotely controlling said carriage, and an electronic control subsystem located within said carriage for performing of said power power plant and for performing control of said main hydraulic pump, for performing control of said sheave pressure roller actuator, for performing control of said skyline cable clamp actuator, and for performing control of said skidline cable clamp actuator, and a rotational rate sensor that is detected by said electronic control subsystem for control of said main hydraulic pump volume output.