Linde Material Handling Gmbh

Binio Binev

Udo Herrmann

A working machine, such as an industrial truck, has working hydraulics, a hydraulic steering device, and a spring-loaded brake. The brake has a braking position and a release position and can be acted upon by a brake-release pressure, which is passed in a brake line, so as to be brought into the release position. A hydraulic pump is provided for the supply to the working hydraulics and the steering device and for producing the brake-release pressure of the spring-loaded brake. The brake line of the spring-loaded brake is connected to a delivery branch line, which is connected to the pump, of the steering device.

Working machine

A hydraulic steering device () of a mobile machine, in particular of an industrial truck, includes a steering angle transmitter () in mechanically functional communication with a steering valve (). As a function of the actuation of the steering angle transmitter (), the steering valve () controls the connection of a steering drive () with a pressure fluid source () and a reservoir (). To vary the translation ratio of the steering device in a simple manner, a bypass device () is operationally associated with the steering drive (). By activation of the bypass device, the quantity of pressure fluid delivered from the pressure fluid source () to the steering drive () can be diverted to a reservoir ().

Hydraulic steering device

A hydrostatic drive system has a travel drive () and working hydraulics (). The working hydraulics () have a variable delivery pump () connected to the driving engine (). The pump () is connected to a container () on the inlet side and delivers to a delivery line (), to which at least one consumer of the working hydraulics () is connected. The pressure medium delivered by the pump () is feedable to a pressure valve (). The pressure valve () is arranged in the delivery line () from the pump () to a control valve device (). A container branch line (), which is connected to a container () and in which a circulating device () is arranged, is connected to the delivery line () downstream of the pressure valve ().

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Haibach, Germany

Binio Binev