O&k Orenstein & Koppel Aktiengesellschaft

Ulrich Kr&uuml;ger

Horst Kohlmorgen

Hans-Joachim Waegner

A method and apparatus for braking a revolvable superstructure of a working machine by counter-steering. A working machine has a superstructure which is driven by a motor via a transmission. A control lever operates a control valve which sends signals to a pivoting pump. The control lever has at least one neutral position and at least two switching positions. When the control lever is moved to a braking position, a switching logic circuit coupled to the pivoting pump is actuated and reverses the pivoting pump. This reverses the direction of revolution of the superstructure and brakes the revolution of the superstructure by counter-steering. A monitoring device coupled to the switching logic circuit monitors the number of revolutions of the superstructure. The braking is stopped when the monitoring device detects that the superstructure has come to a standstill.

Growing community of inventors

Lünen, Germany

Ulrich Krüger

Growing community of inventors

Lünen, Germany

Ulrich Kr&uuml;ger

Ulrich Krüger