Patent ID: 9463933
Filing Date: 2016-10-11
CPC Classification: B65G,F15B,F16H

Claim Text:
1. A hydraulic drive system for a belt conveyor of the type used on a mobile conveying appliance, the drive system comprising: a motor-driven primary pump arranged in a hydraulic primary circuit for conveying hydraulic fluid, the primary pump being a variable displacement pump having a pump regulator for regulating the conveyed hydraulic fluid stream; a hydraulic motor supplied with hydraulic fluid via the primary circuit for driving the belt conveyor; and a controller configured to control the belt speed of the conveyor by influencing the hydraulic fluid stream in the primary circuit, the controller comprising a hydraulic control circuit operated by an auxiliary pump that acts upon the pump regulator with an adjustable actuating pressure to thereby influence the hydraulic fluid stream in the primary circuit and control the belt speed of the conveyor.