LOGGING CRANE Russian patent published in 1994 - IPC

FIELD: logging industry. SUBSTANCE: crane has self-propelled chassis, cab, power unit, and bearing platforms. Hinge-mounted on one of platforms by means of brackets and hydraulic cylinders are leg and support frame. Front and rear pneumatic wheels of self-propelled chassis are connected in pairs through couplings with cable drums. Fitted on drum shafts are chain drive driving sprockets and bearing platforms hinge-connected with support frame through slewing hydraulic cylinders. Such design of crane makes it possible to disconnect cable drums at travelling and to rotate wheels and drums when working. Owing to provision of support leg crane remains in place when working. EFFECT: enhanced convenience of operation, enlarged operating capabilities. 4 dwg