SLEWING CIRCLE OF LOGGER MANIPULATOR Russian patent published in 2005 - IPC

FIELD: timber industry, forestry.

SUBSTANCE: invention relates to manipulator-type loggers, namely, to their slewing circles. In proposed slewing circuit with inclined design leveling device turntable is mounted on frame of self-propelled chassis for tilting forward and backward under action of hydraulic cylinders which are installed in X-like manner, viewing from side, and are hinge-connected to leveling device. Front and rear surfaces of leveling device in contact with frame are made to the same radius of turning as inner surfaces of frame. Stops are rigidly installed on upper surface of frame before and after leveling device. Rear surface of front stop and front surface of rear stop form angles of 90^o plus angle of tilting of leveling device with upper horizontal surface of frame. Proposed design of slewing circle makes it possible to tilt turntable forward and backward, and X-shape arrangement of hydraulic cylinders provides reduction of height of device and contact of leveling device and frame over surface improves reliability.

EFFECT: reduced height of device, improved reliability in operation.

3 cl, 2 dwg