SU1360647A1 - Arrangement for cutting bushes and trees having thin trunks - Google Patents

Abstract

The invention relates to forestry. The purpose of the invention is to increase the efficiency, compactness and reliability of the device. The device includes a frame 1, on which it is installed in a vertical, perpendicular to the feed direction, the plane of the roller chain drive 3, which has a drive 2. On the links of the transfer 3, axes 6 are fixed on bases 7 with stops 8 knives 9 with stops 10. Each of the knives 9 has a lever 12 which discharges it into an inoperative position, and frame 1 has guides. Comb knives 16 are mounted on the frame. After switching on the drive 2, the device moves to the wall of the bush. When a tree or shrub enters the overlapping zone with knives 9, they cut towards the cutting edges of the stationary knife 16. After the knives 9 pass along the knife 16, they, along with the links of the Transmission 3, are carried upwards with an asterisk. In this case, the lever 12 of the knife 9 rests on the guide and turns the knife 9 with a cutting edge along the chain, compressing the spring. Thus, the knives 9 of the non-working branch of the transfer 3 are in the retracted position. After passing along the guide, the knife 9 takes up its working position under the action of a spring. 1 hp f-ly, 5 ill. -J 7 L7 f / /. / с € (L with and about O5 4 Fig. 2

Description

The invention relates to forestry and can be used to cut shrubs and small trees.

The purpose of the invention is to increase the efficiency, compactness and reliability of the device.

Fig. 1 shows a device for cutting off shrubs and small trees, front view; figure 2 is the same, top view; fig.Z - tozzhe, side view; figure 4 - installation of the movable knife on the base, bottom view, section; in fig. 5 is a section aa in FIG.

A device for cutting off shrubs and small trees includes a frame 1, on which a vertical drive is installed in a vertical, perpendicular direction of supply of a plane device; there is a drive 2 roller chain drive 3 consisting of driving 4 and driven 5 stars, on links x of which axes 6 along the outer contour with the help of bases 7 with stops 8, flat knives 9 are fixed with stops 10 and are spring-loaded by means of springs 11 embedded as a sector of a ring 265 °, curved in opposite directions perpendicular to its plane ntsami. In addition, each of the movable knives 9 has a lever 12, which diverts it to an inoperative position, and frame I - a hair-like device located in the frontal plane of the device above the level of the upper non-working branch of chain 2, with a possibility of interaction with guide 12. 13. A lower branch The chains 3 and the bases 7 of the knives 9 on it are mounted in the horizontal guide 14 of the U-shaped profile fixed to the frame 1, and the upper one -. guide 15 - g-shaped. profile The frame 1 is fixedly mounted with a flat comb knife 16 located under the lower branch of the drive chain 2 with the possibility of interaction with the lower surfaces of the knives 9, which has cutting proelines. the edges protruding forward from the overlap of the movable knives 9, whose lateral planes can protrude in the lateral directions of the device for the axial sprockets 4 -5 and at the same time form cylindrical surfaces coaxial with the asterisks 4 and

5. At the same time, the rear profile of each cutting element of the knife 16 is made in the form of a broken seamlessly mated

line, including three straight lines, the middle of which passes under the angle of о to the cutting edge, equal to 3-5, from the beginning of the zone blocked by movable knives 9 along a tangent circle, the diameter of which is equal to the maximum diameter of the trunks of the cut-off. d trees; and touching the start line of the overlapping zone of the movable knives 9 and the cutting edge line

5 of the adjacent cutting element of the knife 16 to the intersection with the last straight line, also touching the specified circumference and exiting from the end of the cutting edge represented by the adjacent

0 cutting element, and the first right. connects the beginning of the cutting edge of its cutting element and the beginning of the middle straight.

A device for cutting off shrubs and small-sized trees works as follows.

The actuator 2 is turned on, while the sprockets 4 and 5 begin to move the chain 3 with the knives 9 and the device in the teeth of the comb-knife 16 advances on the wall of the bush. At the entrance of the trunk of a tree or shrub into the zone of overlap by moving knives 9 moving along the working-bottom

5 branches of the chain, one of the knives 9 cuts it, transversely shifting the cutting edge to the cutting edge of the stationary knife 16, with simultaneous feed by pulling the device along the cutting edges of the movable 9 and the stationary 16 knives along the cut of the trunk or bush. At the moment of cutting, the cutting force from the knife 9 is transmitted through the axis 6 of the stops 8 and 10 of the axis 7, which together with the chain 3 moves along the guide 14, touching its front and rear side surfaces, which only contributes to the linear transverse movement of the knife 9 relative to the knife 16. After the knife 9 passes on the chain 3 along the stationary knife 16 and lifts along its sprocket 4, the lever 12 of the knife 9 is pressed into the guide 13 and turns the knife 9 with a cutting edge along the chain, squeezing the spring 11. Move on when it is out of service the branches of the chain 3 by means of a spring 11 and 3

of the articulation with the base 7, the knife 9 slides with its lever 12 along the guide 13 and presses the chain against the inner side surface of the guide 15, which limits the chain 2 from lateral movements, thereby keeping the knife 9 in an inoperative position. When the knife 9 passes the guide 13, lowering itself to the level of the axis of the sprocket 5, its lever 12 comes out of contact with the guide 13 and the knife 9 under the action of the spring 11 rotates to align the stops 8 and 10 and then on the working branch of the chain 3 starting below the level the axis of the sprocket 5, moves in the working position.

The use of a device for cutting off shrubs and small trees allows to increase the efficiency of the device due to the continuous uniform movement of movable knives along fixed, transversely shifted to the cut trunk of a bush or thin tree with simultaneous longitudinal section of the blades, by moving the device . By this, the movable knives, moving along the non-working branch of the chain, do not participate in the work, since due to their hinged fastening on the base and the diverting levers from the guide frame they turn to the non-working position, and approaching the working branch, the blades the guide and at the expense of returning to the working position, rested against the supports of the bases.

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Formula

the invention

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Claims (2)

1. A device for cutting off shrubs and small-sized trees, including a frame with comb-shaped knives, splitters, a chain drive with guides and knives attached to chain links, and an actuator, characterized in that in order to increase the efficiency, compactness and reliability of the device, the chain drive is located in the vertical, perpendicular direction of the device’s supply, and the comb-shaped knife-divider is perpendicular to the plane of the chain transmission, with each of the movable blades fixed by an axis on the chain link perpendicular to the plane chain drive and spring-loaded relative to the base, executed under the lower U-shaped guide, and stops, which are provided with a knife and a base, each of the movable knives to them there is a lever which pulls it to the non-working position, and a frame - an additional guide located along the non-working branch of the chain to interact with the lever. 2. The device in accordance with claim 1, 1 and 2, which is, in order to improve the quality of cutting in the side zones of the device, the edge of the comb-shaped knife is curved upwards along cylindrical surfaces coaxially with sprockets. 3 it 13 8 3 and 15 7 V / / /, / / I  I / P.LR   / / one/ W / ), WITH / Fy / 5Fig, 3 9 fZ eleven 0a2.S