SU1431708A1 - Double-knife cutting apparatus for agricultural machine - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to agricultural machinery. The invention allows to improve the quality of work, reliability and durability. The device contains a support bar 4, the upper 1 and the lower 2 strips with cutting elements of a trapezoidal shape with a small base at the apex. Fingers 5 are mounted on the pre-forming bar, the longitudinal axis of symmetry of each of which is parallel to the line perpendicular to the carrier bar and passing through the intersection point of the upper and lower segments, and is separated from it at a distance of 1/4 of the spacing of the segments. The finger width is no more than half the step of arranging the segments, and in the zone of the line of small bases of the segments it is not less than the difference of half the step of arranging the segments and the width of the small base of the segment. Plants incident on the cutting apparatus during its operation are moved apart by fingers. The segment, which at this moment is above the finger, withdraws the plants from the finger with its blade and cuts them off at the intersection line of the upper and lower segments. Until the end of the closing of the blades and until complete alignment of the segments, the small base of the upper or lower segments is above the finger, preventing the plants from entering the area between the blade and the finger. In this case, the finger does not take part in the cutting process, does not interfere with the normal operation of the cutting apparatus, and does not overlap any blades. 1 h, para. f-ly, 8 ill. & (L 00 about 00

Description

FIG. 7

FIELD OF THE INVENTION The invention relates to agricultural machinery industry and can be used in cutting apparatus of combines, headers and mowers with two movable knives.

The purpose of the invention is to improve the quality of work, reliability and durability of cutting devices with two sliding knives.

i Fig. 1 shows a double-handle ap-parat with a finger, side view / in Fig. 2, a two-knife, one-run apparatus with a rotor, a top view; in fig. 3 - two: a knife apparatus with a lightened finger; on which the cover plate is installed in FIG. 4 is the same, top view, in FIG. 5, the same, with an overlay carrying a feather and a cutting apparatus mounted relative to a finger with a gap} in FIG. 6 is a view A of FIG. 5 in Fig. 7 shows the finger position on a double-knife two-stage apparatus, top view | in FIG. 8, a finger position on a double-knife cutting unit with rib (chain) endless traction element, top view. The cutting unit (FIG. 1) consists of the upper 1 and lower 2 knife strips with segments 3 of a trapezoidal shape with a small base at the upper body carrying a beam 4 on which the fingers 5 are mounted. The longitudinal axis of symmetry of the finger (FIG. 2) is parallel to the line a- a, perpendicular to the non-Tsemu bar and passing through the intersection point of the upper and lower segments, and it is located at a distance of one quarter of the step of arranging 1 segments. The width of the finger should not be more than half the step of arranging the segments, and in the zone of the c-s line (Fig. 2) of the small bases of the segments it should not be less than the difference of the half of the step of arranging the segments and the width of the small base of the segment. The limitation of the minimum value of the pyrins extends only to the zone of the line of the small bases of the segments. This allows you to perform a finger of a lightweight design (Fig. 3 and 4), and the required width in the specified zone is achieved by a strap 6 or roll, 7 with a feather 8 (Fig. 5 and 6). The described determination of the location of a finger is valid for any (in terms of cutting capacity) cutting apparatuses with two knife strips moving in exactly the opposite directions.

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as well as for the double-blade cutting apparatus with endless pulling rod 9 (Fig. 7 and 8).

During the forward movement of the machine, the plants incident on the cutting apparatus are moved apart by finger 5 or onlays 6 and 7. The segment, which is at this moment above the finger, in the process of movement withdraws plants from the finger with its blade and cuts them off on the line aa. Until the end of the blade closure and further until the segments are fully aligned, the small base of the segment is above the finger. From this condition, the minimum value of the width of a finger in the zone of small bases of the sec-s o segments is determined. of the bearer cutting apparatus (FIGS. 2 and 4), after the upper and lower segments are fully aligned, one of them makes a reverse movement and performs the same operation on the other side of the finger. (the cut occurs along the line aaa). In the case of a two-run apparatus (Fig. 7), the segments of the upper and lower knives alternately alternate each other, passing over the finger, preventing the plants from entering the zone between the blade and the finger.

The cutting apparatus with an endless traction element (Fig. 8) works similarly. Plants appear at the finger only at the moment when the small base of the segments is above the finger. Therefore, the finger does not take any part in the cutting process, does not interfere with the normal operation of the cutting apparatus, and does not interfere with a single blade. When irregularities get into the zone of action of the knives, the fingers mounted on the carrying bar perceive the load that occurs during this, help the device to copy the relief and protect both the knives and the turf floor. When installing knives relative to a finger with a gap (Fig. 5), it is advisable to carry out a finger with a feather 8 that covers the knives of Cepjty, in order to exclude the possibility of plant stalks falling into the gap.

Claims (1)

Invention Formula 1, Two-knife cutting machine for agricultural machines, containing bearing bar and moving simultaneously in opposite directions but Phage. 2 FC / g.Z. Fy 0tfB.6 la