SU1407808A2 - Lopping device - Google Patents

Abstract

This invention relates to the logging industry. The purpose of the invention is to increase reliability. The device for pruning knots comprises a base, a fixed tool holder 2 and tool holders, which are fixed on a base rotatable. On the tool holder, the knife 6 for cutting the branches is mounted with the help of the bolted joint 5. The knife for partial cutting of the bark protrudes beyond the supporting surface 9 of the knife 6 and is made in the form of the rotation bodies adjoining each other, one of which has a curvilinear-concave forming 12, and the other has the shape of a truncated cone 13 with the formation of a cutting edge along the interface . The smaller base of the truncated cone 13 is the copy area 15. When the diameter is reduced to 14-16 cm, a knife comes in contact with it to partially cut the bark, which produces cutting of the bark. The copying site 15 excludes the cutting of knives for the partial cutting of bark into wood. Making the front face of the body of rotation with curvilinear-concave formations improves the removal of the cut bark from the bolted area. 1 hp f-ly, 5 ill. i (L

Description

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11407808

The invention is intended for pruning branches and partial removal of bark from trees, can be used in logging and is an improvement to the device according to author. No. 1150068.

The purpose of the invention is to increase reliability and efficiency. jg

FIG. 1 shows a device, a general view, when treating trees in areas where there is no need for partial removal of bark; ..in FIG. 2 - the same, with partial removal of 15 of the cortex; in fig. 3 shows the node I in FIG. one; in fig. 4 shows section A-A in FIG. 2; in fig. 5 is a diagram of the forces acting on the knife for partial removal of the cortex;

The device for pruning branches 20 holds the base 1, on which the tool holders 2-4 are fixed, and the tool holders 3 and 4 are fixed on the base 1 swivel (the swivel mechanism

longitudinal axis, improves the conditions of the descent of the cut bark and prevents the cut bark from clogging the space between the roaring edge (mating line 14) of the knife to partially remove the bark and the supporting surface 9 of the delimbing knife, overlapping it.

The device works as follows.

The wood to be processed 16 is moved by movable delimbing knives 7 and 8 against the knife 6 and is moved by the driving device of the delimbing machine through a closed cutting contour formed. When processing sections of trees over 14–16 cm, only the pruning of the branches occurs, since the knives for partial removal of the bark, located in the areas of greatest curvature of the knives 6-8, do not touch the bark. In the process of moving the tree being processed, its diameter in the zone of the closed cutting contour is reduced, and with the diameter shown). On the tool holders of the 25pax 14-16 cm knives come into operation

the longitudinal axis, improves the conditions of the descent of the cut bark and prevents the cut bark from clogging the space between the roaring edge (mating line 14) of the knife to partially remove the bark and supporting surface 9 of the delimbing knife, overlapping it.

The device works as follows.

The treated wood 16 is moved by movable delimbing knives 7 and 8 against the knife 6 and is moved by the driving device of the delimbing machine through a closed cutting contour formed. When processing sections of trees greater than 14-16 cm, only the pruning of the branches occurs, since the knives for partial removal of the bark, located on the areas of greatest curvature of the knives 6-8, do not touch the bark. In the process of moving the wood being processed, its diameter is reduced in the zone of the closed cutting contour, and with the diameter

Bolted joints 5 are curved with curved knives 6-8 for pruning branches with bearing surfaces 9.

The bare blades 10 bolted joints 5 30 knives and tool holders in the zone of the greatest curvature of knives 6-8 protrude onto the bearing surface 9, are knives for partial removal of the cortex and are made in the form of matched bodies (35 with each other). curved-concave relative to the longitudinal axis 11 forming 12, for example, in the form of a parabola, and the other - the shape of a truncated cone 13, 40 with this line 14 of the conjugation of these bodies is located along the larger base of the truncated cone 13 with the cutting of the cutting edge, and the smaller base of the truncated the cone is flat d3 and is a copying platform 15.

50

The blade copying platform 15 for partial removal of bark is parallel to the direction of movement of the tree being processed, which eliminates cutting the knife into the stem wood, and having a positive back angle improves copying and reduces the force exerted on the knife during the passage of the remains of cut branches. At the same time, forming a 12 front edge of the knife, is curvilinear-concave with respect to 5 0 З

0

with

for partial removal of the bark, the copying site 15 pushing the bark 17 and deforming the wood surface 18 without destroying. Cutting down the bark into stem wood is achieved by exceeding the cutting edge above the copying area and by the presence of a negative total component of the CRC + R - R About (Fig. 5).

Performing a heat rotation located on the side of the rod, with a second-order generating curve, for example, along a parabola, improves the conditions of the descent of the cut bark.

Claims (2)

1. Device for pruning, according to author. No. 1150068, characterized in that, in order to increase reliability, the cutting edge of the knife for partial removal of the cortex is formed by mating the base of the body of rotation with a curvilinear-concave formation with a large base of a truncated cone, which is located opposite to the head of the bolted joint. 2. A device according to claim 1, characterized in that the generator is made along a second-order curve. sixteen fPug.i U9,2 Fi2.3 77 FIG. five