RU181755U1 - Combine harvester - Google Patents

Abstract

The utility model relates to agricultural machinery, mainly to combine harvesters. The technical result is the reduction of dynamic loads on the skeleton of the combine and grain losses due to the suspension and leveling of its rear part. The technical result is achieved due to the fact that the combine harvester contains a skeleton and suspension of wheels of the rear axle with actuators, a suspension system and leveling, and the actuator is made in the form of a hydraulic cylinder, the system the spring contains a pneumatic-hydraulic accumulator, which is connected through a solenoid valve to the control unit and vibration acceleration and speed sensors, and the leveling system contains a hydraulic pump and a directional valve with a tilt angle sensor.

Description

The utility model relates to agricultural machinery, mainly to combine harvesters.

As a result of the analysis of the prior art of the invention revealed the following analogue and prototype.

A known combine harvester ("Yenisei" Combine Harvesters, DI Shatkus, p. 177, 246, Fig. 90, 132, Moscow, Agropromizdat, 1986), containing a frame directly to which the drive axle axle is rigidly attached large diameter tires and steering axle with smaller diameter tires.

The disadvantages of this analogue are:

- low speed in the operating mode, as ensuring the smoothness of the combine and damping the vibrations is mainly due to wheels with large diameter tires, while the tire tires smooth out only a narrow range of low-frequency vibrations arising from the microrelief of the bearing surface;

- the suspension does not have the ability to automatically change the distance between the frame and the wheel axle, which eliminates the possibility of stabilization of the skeleton and, as a result, does not provide a reduction in grain losses during the operation of the combine in fields with a slope.

Closer in technical essence is the John Deere JH7010 combine harvester (http://www.hillcotechnologies.com/pdfs/john-deere/D-120427СМА01C-JH7010-&-JH9010-Operator's-Manual-(16001-16999) selected as a prototype ) .pdf), containing a suspension system, the function of which is performed by elastic tires, and a leveling system, including executive hydraulic cylinders mounted between the rear steered axle and the skeleton, connected to the working fluid pressure source through the valve, the control unit, and a number of inclinometers.

Disadvantages:

- low speed in the operating mode, since there are no elastic and damping elements in the design, in addition to elastic tires, which makes it impossible to smooth out the dynamic effects of the wheel on the skeleton of the machine and perform the function of suspension.

The objective of the utility model is to increase the speed of movement and productivity in the working mode when harvesting grain on agricultural backgrounds with complex terrain.

EFFECT: reduced dynamic loads on the skeleton of the combine and grain losses due to suspension and leveling of its rear part.

The technical result is achieved due to the fact that the combine harvester contains a skeleton and a suspension of wheels of the rear axle with actuators, a suspension and leveling system, the actuator being made in the form of a hydraulic cylinder, the suspension system contains a pneumohydraulic accumulator, which is connected to the control unit via an electromagnetic valve and vibration acceleration and speed sensors, and the leveling system contains a hydraulic pump and a control valve with an angle sensor tilt.

In Fig 1. shows a General diagram of a combine harvester. The suspension system includes a hydraulic cylinder 5, located between the suspension of wheels of the rear axle 11 and the skeleton 6, connected to the pneumohydraulic accumulator 4 through an electromagnetic valve 7, which is controlled by the control unit 8 and vibration acceleration sensors 9 and speed 10. The leveling system contains a hydraulic cylinder 5, connecting the suspension elements of the rear axle and the skeleton of the combine 6, connected to the hydraulic pump 2 through the valve 3, which is controlled by the angle sensor 1.

Combine harvester with a suspension system and leveling, works as follows.

In the case when the combine is moving uphill or downhill, the slope sensor 1 sends a signal to the control valve 3, the passage sections of the control valve 3 are opened and the working fluid from the hydraulic pump 2 is fed into the cavity of the hydraulic cylinder 5, the rod of the hydraulic cylinder (position in the figure marked) begins to move, and the skeleton 6 of the harvester takes a horizontal position, which ensures minimal grain loss. When the combine is hit by bumps, the hydraulic cylinder 5 acts as a suspension element for the rear of the combine by means of a pneumo-hydraulic accumulator 4. The vibration acceleration sensor 9 and the speed sensor 10 transmit a signal to the electromagnetic valve 7 through the control unit 8 to change the flow area in it, thereby changing elastic-dissipative parameters of the suspension of the rear axle of the wheels, due to which there is a damping of the oscillations of the skeleton of the combine, dynamic loads are reduced, which allows to increase the speed spine movement in working and transport mode.

Claims (1)

Combine harvester containing a skeleton and suspension of wheels of the rear axle with actuators, a suspension and leveling system, characterized in that the actuator is made in the form of a hydraulic cylinder, the suspension system contains a pneumatic-hydraulic accumulator, which is connected via a solenoid valve to the control unit and vibration acceleration and speed sensors , and the leveling system contains a hydraulic pump and a control valve with a tilt angle sensor.

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