SYSTEM OF CONVEYORS OF MULTILANE BEET HARVESTER AND LIFTING AND LOWERING HYDRAULIC DRIVE Russian patent published in 2012 - IPC A01D27/04 A01B63/32 

FIELD: agriculture.

SUBSTANCE: group of inventions refers to the field of agriculture, in particular, to beet harvesters. The system of tops conveyors of the multilane beet harvester comprises active disc knives with coaxial beaters of top cutters, a picking inclined conveyor, a cross conveyor with studs on the bearing surface and an inclined loading conveyor, besides, the inclined loading conveyor is arranged above the top-conveying branch of the cross conveyor. The picking inclined conveyor is installed as capable to direct tops to the lower branch of the cross conveyor, where studs are arranged with their cantilevers towards its upper branch. The inclined loading conveyor is arranged between the upper and lower branches of the cross conveyor at the angle to direction of the beet harvester travel and consists of two continuous chains joined by crosspieces with arched forks arranged between them, length of which is less than the distance between neighbouring crosspieces. Forks have stiff teeth in planes that are perpendicular to the crosspieces. The lower branch of the cross conveyor may transit into the upper branch around the trajectory of motion of cantilever ends of forks of the inclined loading conveyor in its lower part. The hydraulic drive to lift and lower the system of conveyors of the multilane beet harvester into the transport working position, comprises a frame on wheels with rotary vertical stands that are hingedly connected to the machine frame with links of parallelogram hinged plates and hydraulic cylinders of lifting and lowering. Discharge cavities of these hydraulic cylinders are communicated with oil pipelines to control channels of the tractor hydraulic distributor. One of the control channels of the tractor hydraulic distributor is communicated with discharge cavities of the hydraulic cylinders for frame lifting and lowering via the check valve and via a communicated parallel reduction valve. The valve pot of the check valve is communicated with cavities of these hydraulic cylinders and with the sub-valve cavity of the check valve. Cavities of hydraulic cylinders for lifting and lowering of the frame are communicated with the other control channel of the hydraulic distributor via a controlled valve, the output channel of which communicates also with the drain to the oil tank. Hydraulic cylinders of frame lifting and lowering that are forward in the working position of the beet harvester have a device to control extent of stem insertion into the hydraulic cylinder.

EFFECT: making it possible to transport a 12-lane beet harvester, also along its width, using general roads, in particular, earth ones, with uneven surface, and also to increase efficiency of tops removal.

2 cl, 3 dwg