RU2415528C1 - Agricultural machine - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: invention relates to agricultural machine building and may be used to treat soil in spaces between rows. The machine comprises a tractor with a hinge and an accessory for frontal hinging of a cultivator, arranged in the form of closed quadrangle, the back beam of which is hingedly joined to the hinge, and the front beam is joined to the cultivator. Connection of the front beam of the accessory and the cultivator is carried out by means of two hydraulic cylinders joined by means of hydraulic lines with a hydraulic distributor, a slide valve of which is joined to rotary lever of controlled tractor wheels.

EFFECT: reduced traction resistance of agricultural machine with frontal hinged cultivator, simplified layout and reduced forces at control elements.

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Description

The invention relates to agricultural machinery and can be used for inter-row tillage.

Closest to this invention is an agricultural unit [1] for inter-row tillage with controlled discs, comprising a wheeled tractor with a linkage and a device for frontal mounting of the cultivator, made in the form of a closed quadrangle, the rear beam of which is pivotally connected to the linkage, and the front beam by means of rods - with a cultivator. Forks with rotary disks are pivotally mounted on the fixture. The forks in the upper part are rigidly connected to the levers, two of which are pivotally connected to each other by a transverse link, and the third lever is pivotally connected to the pivot lever of the tractor’s steered wheels by means of a longitudinal link.

The disadvantage of this unit is the introduction to the design of an additional control device that causes an increase in the traction resistance of the unit, as well as the complexity of the layout and great effort on the controls.

The technical result of this work is to reduce the traction resistance of an agricultural unit with a frontally mounted cultivator, simplifying the layout and reducing the effort on the controls.

To achieve the specified technical result in the proposed agricultural unit containing a device for frontal mounting of the cultivator, in contrast to the prototype, there is no rigid connection of the cultivator and the two shoulders of the lever associated with the rotary lever of the tractor’s steered wheels.

The drawing shows the proposed agricultural unit.

The agricultural unit consists of a wheeled tractor 1 with a hinged system, a cultivator 2 and a device 3 for frontal mounting of a cultivator.

The device 3 is made in the form of a closed quadrangle, the rear beam pivotally mounted on the front linkage of the tractor. A cultivator 2 is pivotally attached to the front beam of the device 3 using two hydraulic cylinders 4. The cultivator 2 is located between the front and rear beams of the device 3, and the side beams of the device 3 pass under the frame of the cultivator 2, which helps to fix the cultivator 2 when transferring it to the transport position. The hydraulic cylinders 4 are located at an angle to the longitudinal axis of the unit, forming a trapezoid, a large base connected to the cultivator 2, and a smaller base - with the device 3.

The hydraulic cylinders through the hydraulic lines 5 are connected to the spool valve 6, which, in turn, is connected with the rotary lever 7 of the steered wheels of the tractor 1.

Agricultural unit operates as follows. The rotation of the steering wheels of the tractor 1 and the rotary lever 7 causes the spool valve 6. The hydraulic valve 6, controlling the flow and discharge of the working fluid depending on the direction of rotation of the steered wheels, retracts one hydraulic cylinder and extends the other, causing the cultivator to rotate in the direction of rotation of the tractor’s steering wheels 1, as a result of which, at each moment of time, the cultivator 2 occupies a position corresponding to the minimum moment of resistance to rotation, thereby able to implement the rotation of the agricultural unit.

Thus, increases the controllability of the agricultural unit with less, compared with the prototype, resistance to movement of the unit and with less effort on the controls.

The economic effect is ensured by simplifying the layout of the unit and improving the quality of tillage.

Information sources

1. Pat. No. 2244390 RU, ⁷ А01В 59/041, 59/048. Agricultural unit with controllable disks // A.N. Ploschadnov et al. 12/26/2002. Publ. 01/20/2005. Bull. No. 2. - 5 sec.

Claims (1)

An agricultural unit comprising a tractor with a hitch and a device for frontal mounting of the cultivator, made in the form of a closed quadrangle, the rear beam of which is pivotally connected to the hitch, and the front beam with the cultivator, characterized in that the front beam of the device and the cultivator are connected by two hydraulic cylinders connected using hydraulic lines with a control valve, the spool of which is connected to the rotary lever of the tractor’s steered wheels.