WORKING ELEMENT OF SUBSURFACE- PLOW - FERTILISER Russian patent published in 2009 - IPC A01C7/20 

FIELD: agriculture.

SUBSTANCE: working element contains a combined V-shaped stand, mounted at its backend fertiliser tube, and in the lower part - shares. Shares are set in the aperture of the stand by means of a shoe. In front of the stand there is a vertical disc colter. Behind the fertiliser tube inside the cut in the shoe there are toothed soil rolls-choppers, support bearings whereof are fixed in the lower part of the shares. Front part of the stand is rounded along the radius of 350-400 mm and has a bilateral grinding at an angle of 15-20°. Front edges of the shares are connected with the lateral edge of the grinded part of the stand. Shares are set at an angle of 25-30° to the horizontal plane, having lower grinding with a sharpening angle of 12-15°. Disc colter is set at the depth by 5-10 mm below the cutting edge of the share; it has restricting rims at selected depth of processing and is fixed to the frame by stands having "П"-shaped ledges for the rims. Disc colter is secured with the stand by horizontal planks with ledges for the rims.

EFFECT: reduced draught resistance and increased yield of agricultural crops.

2 dwg