SU1416079A1 - Actuator for cutting apparatus - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to agricultural machinery, in particular, grass and cereal harvesting machines. The application of the invention makes it possible to achieve a reduction in the power consumption of the drive of the cutting apparatus. The drive of the cutting unit consists of a drive shaft 1, one end of which is bent. At this end, an P X oscillating mechanism is assembled, consisting of a cross 2, an oscillator fork 3, an oscillator driving shaft 4, a fork 5 rigidly connected to the oscillator shaft. The fork 5 is movably connected to the driver 7, which is hingedly connected through intermediate treads 8 to the knife 9. The oscillator drive shaft is hollow, and inside it there is a torsion shaft 10, which is rigidly connected to the drive shaft and frame. When the drive shaft 1 rotates through the oscillating mechanism, the oscillatory motion is transmitted to the knife 9. When the leading shaft 4 rotates, the oscillator motion is transmitted to the torsion shaft 10. During the knife travel from the dead points, the elasticity of the torsion shaft allows the blade to resist than in the known drive will reach the required speed for the cut. 1 il. , (L with 4ik O) O VI

Description

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FIELD OF THE INVENTION The invention relates to agricultural machinery, in particular to grass harvesting machines and cereals.

The purpose of the invention is to reduce the drive power consumption.

The drawing shows the drive of the cutting unit.

The drive of the cutting unit consists of a crankshaft 1, one: the end of which is bent at an angle from i18 to 20 °. At the curved end of the drive shaft; The oscillatory mechanism consists of a cross 2 of the oscillator, a fork 3 of the oscillator, a drive shaft 4 of the oscillator, a fork 5 rigidly connected to the shaft of the oscillator by means of a keyed joint.

 The cylinder body of the oscillator shaft is relocated in the intermediate support 6.

The plug 5 is movably connected to the driver 7 of the oscillatory mechanism. The curtain 7 is pivotally connected through intermediate rods 8 to the knife 9.

The oscillator drive shaft is hollowed out and its inner surface is rigidly connected to the shaft of the torsion bar 10 (by means of a spitz connection), which in turn is rigidly connected to the frame 11.

The drive of the cutting apparatus work; em as follows.

When the drive shaft 1 of the cutting machine drive is rotated from the curved end of the drive shaft 1, the rotational movement is transmitted to the oscillator cross 2. The cross 2, the oscillator, begins to perform mating oscillations on the support bearings, 5 0

five

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The second ones are transmitted from the crosspiece 2 of the oscillator through the fork 3 of the oscillator to the shaft 4 of the oscillator. From the shaft 4 of the oscillator, cam-shaped oscillatory movements are transmitted through the plug 5, through the lead 7 and through the hooks of the suspension 8 to the knife 9 of the cutting apparatus. The knife begins to reciprocate, which provides a cut of plant stems.

Since the knife has a large mass, large inertial forces arise in the dead points of the knife, causing dynamic loading of the drive. The torsion shaft is intended for damping the inertia of forces. When the tubular shaft is rotated through the spline joint of the oscillator, the movement is transmitted to the torsion shaft, which starts to twist, overcoming the elasticity of the torsion, thereby reducing the inertial forces acting on the drive. During the knife stroke from dead points, the elasticity of the torsion shaft makes it possible to overcome the forces of resistance to the movement of the knife and the knife, earlier than in a simple drive by a swinging washer, reaches the speeds required for cutting.

Claims (1)

Invention Formula A cutting unit drive containing a crankshaft mounted on a frame, an oscillator crosspiece, an oscillator plug with a shaft, a cutting apparatus characterized in that the actuator is equipped with a torsion shaft, while the oscillator shaft is hollow and torsion a shaft is installed inside it and rigidly connected to the shaft of the oscillator and the frame.