Hydraulic brake motor assembly for truck cover system

摘要

A hydraulic brake gear motor with a brake mechanism to operate a roll tarp for use with an open top container. A motor-driven rollable cover is attached to and wrappable about a reel to selectively cover contents of the container. The hydraulic gear motor operates with a brake mechanism to lock and hold a position of the motor. A secondary brake mechanism may include a hydraulic piston that selectively engages a holding brake with a hex connector. A hydraulic motor may include a port path for flow of fluid to internal meshing gears and a braking mechanism with a plunger that clamps and holds the meshing gears when hydraulic fluid is not flowing. A transmission having rolling gears can be operated by the hydraulic motor with such brake mechanisms. The motor and brake mechanisms are preferably hydraulically operated with an existing system of a trailer or rail car.