SU1496680A1 - Harvester double-knife cutting apparatus actuator - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to agricultural machinery, primarily to mowers for cereals. The invention allows to expand the technological capabilities of the machines and to simplify the design of the drive of the knives. The housing 1 is installed in front of the knives 2 and 3 in the zone of their convergence and secured in the hinges 4 and 5, the geometrical axis of which coincides with the axis O of the driving link 6. The driven members 7 and 8 mounted on the axes O ₂ and N have cranks 9 (O ₂ N), 10 (MK), kinematically connected with the levers 11 and 12, which are driven by the knives 2 and 3. The lever 12 is fixed pivotally on the axis O ₃ in the fixed support 13 of the machine frame, and the lever 11 is connected to the axis of swing of the levers 12 through the additional lever 14. When the driving link 6 rotates, the oscillatory motion through the levers 11.12 and the additional lever 14 is transmitted knives 2 and 3. 1 ill.

Description

with axis o, vedup; his links b. Driven links 7 and 8, mounted on the axes x Oj and K, have cranks 9 (), f 10 (MK), kinematically connected with levers 11 and 12, which are driven by knives 2 and 3. Lever 12 is fixed pivotally on the Od axis in the underneath 1496680 4

Vision support frame 13 of the machine, and the lever

11 is connected to the axis of swing of the levers

12 through the additional lever 14. When the driving link 6 rotates, a sharp movement of the levers 11, 12 and the additional lever 14 is transmitted to the knives 2 and 3. 1 or more

The invention is from agricultural machinery, mainly to grass mowers.

The purpose of the invention is the expansion of the technological capabilities of the machine and the simplification of the design of the knife production line.

The drawing shows a schematic diagram of the device.

J The body 1 is installed in front of the knives 2 and 3 in the zone of their convergence and is fixed in the hinges 4 and 5, the geometrical axis of which coincides with the axis 0 of the big John 6. The slave links 7 and 8 (made, for example, in the form of gear wheels), mounted on axes Oi and K, have cranks 9 () and 10 (MK), kinematically connected with levers I and 12, which set knives 2 and 3 in motion. Lever 12 is fixed with hinge on axle 0 in fixed support 13 the frame of the machine, and the tag 11 is connected to the axle of the pumping: lever 12 through the additional lever 14 .. The drive gear is driven, for example p, from the motor (not shown)

The device works as follows;

 The mechanism will follow, analyzing (and the first stage) knife drive

When the shaft of the pinion gear 6 is rotated, the driven wheel 8 rotates relative to the body 1 around its own axis and simultaneously with the body relative to the axis of the crank 10, the lever 12 is rotated and, consequently, the knife 3 is moved. When the body rotates in one direction counterclockwise for the state of the mechanism depicted in the figure, until crankshaft 10 (MK) coincides in direction with the lever. When you turn the wheel in the same direction, the housing moves

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to the other side (counterclockwise). However, the lever 12 at the same time

5 shifts the knife 11 to the right until the shoulder, the crank 10 (MK) and the center line OjK coincide in direction. Then the lever 12 and the knife 3 change the direction of their movement,

0 but the gearbox housing 1 is moved clockwise until the next match of the lines. MK and OdM. Thereafter, the housing changes its direction of movement, while lever 12 and

5, the blade 13 continues to move to the left to its original state (see drawing). Then the cycle repeats. Thus, if the gear 6 is continuously rotated in the same direction, the lever 12 makes a swinging motion, carries the knife 3 away, since the movement of the mechanism body allows such oscillations with a constant lever length 12o. Similarly, the knife 2 is driven from the wheel 7 with the crank 9 through lever 11. The difference is as follows. At the initial moment (shown in the drawing), due to the rotation of the housing 1 counterclockwise, the axis of the wheel 7 (button 0) moves downwards, and the crank 9 rotates counterclockwise, pulling the end of the lever 11 together with the knife 2 to the left, i.e. The opposite to the movement of the knife 3. Thus, when the wheels rotate 8 to 7 -C in the same direction, the hops 11 and 12 move in different directions, moving the knives 2 and 3 in an opposite phase.

An additional lever 14 provides the necessary degree of freedom of the mechanism as a whole “With the direct attachment of the upper end of the lever 11 on the axis OO, the mechanism works (wedge).

The proposed design of the central drive allows the formation

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five

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five

roll of bevelled mass in the center of the mower and eliminates long kinematic chains for driving two knife sections in antiphase from a single drive motor, which simplifies the design and does not require special adjustments during operation, which are inevitable with flexible joints in known structures

Claims (1)

Invention Formula The drive of the double-blade cutting machine of the harvesting machine, consisting of knuckle-mounted levers placed on the frame and a mechanism for converting the rotational movement of the driving link into the oscillatory movements of the pliers, is designed to expand the technological capabilities of the machine and simplifying the design of the knife drive; the mechanism for converting rotational motion into oscillatory is designed as an installation. gears connected to each other on a common case, connected to each other by means of a drive gear, while the axles of the two shoulders are placed on gears with eccentricity relative to they are about this one, and the other ends of the two shoulders are pivotally connected to the frame, while one of these ends is connected to the frame by means of an additional lever.