| 摘要 |
FIELD: agriculture. ^ SUBSTANCE: harrow consists of main frame and autonomous underframes. Stands with working elements are rigidly installed on underframes. Working elements are arranged in the form of spirals of round or rectangular cross section. Working elements are hingedly fixed on stands with the possibility of rotation. Flat blades turned at the angle of 30-45 in direction of motion are rigidly fixed to spirals perpendicularly to axes of spiral turns. Blades are fixed to spirals with even pitch on each quarter of its turn and are arranged at the top as wider compared to base. Working elements are placed in parallel rows with even pitch so that each subsequent row is displaced relative to the previous one along with motion by length of spiral, and across - by value of processed strip with one working elements. Together at least three working elements make working module and being rigidly connected to one underframe and hydraulic cylinder, make autonomous block. Hydraulic cylinder is installed vertically in geometric centre of underframe. Underframe at sides is equipped with rolling bodies that roll in vertical guides, which are rigidly fixed to the main frame. The main frame has connection beams at sides for new blocks, which are symmetrically connected at the left and right by one, by two, etc. Each underframe consists of two parts: rectangular and conical ones, which are joined by inclined rods that approach each other in geometric center, where head of hydraulic cylinder is hingedly installed. Opposite end of hydraulic cylinder stem is hingedly fixed to center of arched support. Arched support with its lower part - vertical knives - is rigidly fixed to the main frame. Wheels with one end of axle is rigidly fixed to side, which is rigidly fixed to the main frame with the possibility of detachment. Main frame is grown with connection beams as width of harrow capture increases by means of connection of block-module fragments. ^ EFFECT: such structural design makes it possible to improve quality of soil cultivation and efficiency of harrow. ^ 5 dwg |
