Hydraulic control circuit for hydraulic motor has intermediate position of valve unit by which preferably through throttling of flow medium supply of the motor's working chambers the feed side is connected to drain via restrictor

摘要

The hydraulic control circuit for a hydraulic motor has a valve unit(230) with at least one intermediate switching position(230-Z) between the two switching positions(230-A,230-B) allocated to the subject switching process. In the intermediate position, and preferably through throttling of the flow medium supply of the motor working chambers(220-2), the feed side(222) is connected to the drain side(224) via a restrictor orifice(231). The piloting of the valve unit takes place in such a way that a valve body is movable with a controlled speed via the intermediate position. An independent claim is included for a radial piston motor equipped with the proposed hydraulic control circuit.