SU969202A1 - Tree trimming device - Google Patents

Description

(54) DEVICE FOR CUTTING TREES

one

The invention relates to an agricultural machinery industry and is intended for pruning trees.

Known cutting apparatus for trimming bushes, containing a rotating horizontal disk mounted on a vertical shaft with segmented knives attached to it, with a cutting edge along a logarithmic spiral and a bar with opposing fingers with a notched groove, as well as curved blades on a shaft above a horizontal C 1 disk.

The disadvantage of this device owner. The fact that this cutting apparatus has a low quality of cuts of the branches and is prone to breakage, since the forward protruding stationary fingers of the timber receive blows during frontal contact with the branches, especially when they meet with thick branches.

The closest to the present invention is a tree trimming device, including poj.ii with step-mounted circular saws, a branch feed mechanism and its drive. The branch-bearing mechanism is made in the form of flexible closed organs arranged in parallel planes with the fingers fixed on them 2J.

The disadvantages of the known device are the low quality of the cuts of the branches, the complexity of the branch-feeding mechanism, the blockage by the branches of the space between the circular saws, the presence of a large drag of the device, the possibility of breakdowns of the mechanisms.

10 ma of branching, especially when cutting branches of considerable thickness, even before they fall into the cutting zone. At the same time, the fingers of the branching mechanism interfere with the movement of the branches to the disk

15 saws, as they are in contact with still uncut branches.

In addition, irrational energy expenditures on repeated cuts of the butt part of

20 cut branches, as as they are moved by the conveyor, the branches move down into the space between the circular saws.

The purpose of the invention is to increase

25 productivity and quality improvement cropping.

This goal is achieved by the fact that the branch branch mechanism is made in the form of hinged on the frame

Claims (2)

30 with the possibility of oscillating motion and circular saws located between the planes. wedge-shaped plates with a curved side edge in the support cutting zone. The wind-feed mechanism is provided with the marks mounted on the front ends of the wedge-shaped plates, the curved linear side edges of which are made with a tooth-like notch. FIG. 1 shows a device for trimming trees, a general view in an axonometric view; in fig. 2 - the same, top view; in fig. 3 is a view along arrow A in FIG. 2. The device consists of a frame 1 on which step saws 2 are staggered and a branch-feeding mechanism in the form of wedge-shaped plates 3 with a drive 4. Wedge-shaped plates 3 are mounted on hinges 5 stepwise in parallel planes between the planes of circular saws 2. On the front ends of the wedge-shaped plates 3, the rollers b are hingedly mounted, and their lateral curvilinear edge is made with a tooth-like notch 7. The device operates as follows. Before entering the aisle between the gardens, the frame 1 is transferred from the transport position to the working position, for example, the horizontal position. They are installed at the height of a given cut of the tree crown. The rotational drive of the circular saws 2 and the branch-feeding mechanism is turned on. Thereafter, the aggregate is guided along a row of trees and the device pruns the branches of the upper part of the crown, for example, one full row. In this case, the flow of branches of the wedge-shaped plates 3 is divided into separate flows entering the zones of favorable cutting of circular saws 2. Activating the division of the branches into separate streams is provided by oscillating movement of the plates 3 and the hinged rollers 6, the rollers 6 facilitate the sliding of the wind-moving branches. The plates 3 themselves, due to their location in the space between the saws and the execution of the side edges, block from the branches the zone of unfavorable cutting of the circular saws 2 and promote the movement of the branches along their working surfaces to the zones of more favorable cutting. The curvilinear construction of the divider working surfaces reduces resistance and facilitates more free movement of the branches into the cutting zones of the saws, where a supporting cut of the branches is provided, and a tooth-like notch prevents the branches from sliding out when cutting. As the branches of the upper part of the tree crown are cut, they move outside the device under the action of a finger conveyor (not shown). Since the plates 3 are installed in parallel planes in steps, in the space between the planes of the stepped circular saws 2, the descent of the cut branches is facilitated when they are removed outside the device. The application of the proposed device will improve the cutting process and the quality of trimming, increase the speed of translational movement of the unit, and, consequently, its performance. Claim 1. A tree trimming device comprising a frame with step-mounted circular saws, a power supply mechanism and its drive, characterized in that, in order to increase productivity and improve the quality of trimming, the power supply mechanism is designed as hinged on the frame so that oscillatory movement and wedge-shaped plates located between the planes of the disk saws with a curved side edge in the support cutting zone. 2. The device according to claim 1, about t l and that the branch-feeding mechanism is equipped with rollers mounted on the front ends of the wedge-shaped plates. 3. A device according to claim 1, characterized in that the curved side edges of the wedge-shaped plates are made with. tooth-shaped notch. Sources of information taken into account in the examination 1. USSR author's certificate №469435, cl. A 01 D 55/18, 1972. 2. USSR author's certificate No. 682180, cl. A 01 G 3/04, 1978, ; l,