SU1489589A1 - Soil-working unit - Google Patents

Description

The invention relates to forestry and land reclamation machines. The purpose of the invention is to reduce traction resistance and increase technical reliability. The device comprises a frame 6, on which the plow body 5 and the cutting knife 4 are fixed. Through the axis of the hinge 8 on the frame

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6 a vertical bracket 9 is fixed, which is connected by an axis of the hinge 12 to an inclined pillar 11 connected to the frame 6 by the hinge 10. A three-linkage consisting of the frame 6, an inclined thrust 11 and a vertical bracket 9 is connected by means of the hinge 13 and the connecting element 7 to the hydraulic suspension system 2 tractors 1. Inclined thrust 11 is made in the form of a telescopic body and a cylindrical spring. During a meeting with an obstacle, the cutting knife 4 deviates from the vertical position, the inclined thrust 11 shortens, and the vertical bracket 9 tilts simultaneously in the opposite direction from the direction of movement, resulting in an increase in the vertical component of the tractor thrust force, which affects the tillage of the soil-cultivating tool, i.e. . there is an overcoming of an obstacle by a tillage tool. 1 hp f-ly, 4 ill.

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The invention relates to forestry and land reclamation machines used in the preparation of soil for forest and agricultural crops and the localization of forest fires.

The aim of the invention is to reduce traction resistance by providing self-oscillations of the instrument in the longitudinal vertical plane and increase technical reliability.

FIG. 1 shows a schematic diagram of the proposed soil tillage unit during the execution of the technological process; in fig. 2 - the same, side view; in fig. 3 - inclined thrust connecting triangle hinge tillage implements; in fig. 4 - kinematic diagram of the tillage tillage implements when meeting with an obstacle.

The tillage unit contains a tractor 1, a hydraulic system 2, a tillage implement 3 including a cutting knife 4, a plow body 5, a frame b with a connecting hinge triangle consisting of a connecting element 7, a hinge axis 8, by means of which a vertical bracket 9 is attached, a hinge axis 10 for attaching an inclined thrust 11 and an axis of the hinge 12, by means of which the vertical bracket 9 is connected with the inclined draft 11 in the upper hinge 13. The height of the arms pillar is equal to C, the height of the suspension is equal to b. o Four-piece hinged system - L ₅ .

The inclined thrust 11 of the attachment triangle includes a telescopic body 14, a rod 15, a cylindrical spring 16, an thrust washer 17 and an adjusting nut 18 for regulating the compression force of the cylindrical spring 16.

Tillage unit works as follows.

When the tractor '1 moves during the execution of the technological process, the instantaneous center of rotation of the hinged four-arm of the hydraulic system 2 is in t. And at a height of L ₃ , while the tillage implement 3 moves at the set depth of the cutting knife 4 and the plow body 5. Frame 6 at this time is in a horizontal position, and horizontal thrust 7 is located at the working height of the suspension axis b ₂ . The vertical bracket 9 of the attachment triangle of the hinge is in a vertical position, and the cylindrical spring 16 of the inclined thrust 11 is in a partially compressed state, ensuring the arrangement of the frame 6 and the recessed plow body 5 parallel to the soil surface.

When meeting an obstacle, there is a slight deviation of the cutting knife 4 and the plow body 5 back in the direction of travel. At this time, the cylindrical spring 16 is compressed, and upon further movement of the unit, after overcoming the obstacle, the cylindrical spring 16 is further depressed, and the cutting knife 4 and the plow body 5 automatically return to their original position. Each movement of the cutting knife 4 and the plow body 5 is accompanied by their damped self-oscillations, the maximum amplitude of which depends on the rigidity of the cylindrical spring 16.

When a tillage tool encounters an insurmountable obstacle (stumps, stones) where the traction resistance increases, the compression of the cylindrical spring 16 increases, the length of the inclined thrust 11 decreases, the angle of inclination of the cutting knife 4 to the horizontal plane increases, and the vertical component of the force increases thrust acting on vyglublenie guns from the soil, increases the height of the triangle pillar connecting linkage to a value b, and the axis of suspension height L ₂ is reduced, etc. proceeds slope vertical arm 9 in the opposite direction from the direction of motion and the resulting increased vertical force component tractor thrust acting on vyglublenie tilling implement, i.e. there is an overcoming of an obstacle as a result of which the technical reliability of the tillage implement increases.

Claims (2)

Claim 1. A tillage unit containing a tractor with a hydraulic hinged four-arm system, a tillage implement that has a hinged link with the four-linker, a frame with a connecting triangle, a vertical bracket and an inclined billet and a cutting blade and a plow body consistently installed on it, characterized by in order to reduce the tractive resistance by providing tools oscillations in longitudinal vertical plane and to improve the technical ^reliability: NOSTA, vertical bracket and the inclined thrust trehzvennika associated with frame shells and pivotally interconnected, which are located behind the hinge axis of the frame with compounds hydraulic system, while one of the links and telescopic trehzvennika performed. spring loaded. 2. Unit π. 1, characterized in that the cutting knife is installed on the frame at an angle of 90-115 °. 1489589