SU548420A1 - Machine for pruning knots from fallen trees - Google Patents

Description

one

The invention relates to the forest industry and can be used in logging.

A known machine for cutting branches from fallen trees, including a self-propelled chassis with a sliding beam fixed to it and gripping and cutting devices 1.

Also known is a machine for pruning knots from fallen trees, including a self-propelled chassis, on which a turntable is installed, a guide support with a retractable beam having a gripping-cutting head, a pulling device with upper and lower mechanisms and a receiving tray 2.

However, for known machines, low working efficiency is characteristic due to low productivity.

The purpose of the invention is to improve the efficiency of the machine.

To do this, two brackets are fixed on the turntable, between which the lower mechanism of the pulling device is mounted, while the receiving tray is fixed on one bracket, and the guide bearing with the extendable beam and the upper mechanism of the pulling device are paired with the help of parallelogram mechanics. In this case, one 113 links and a parallelogram mechanism can be performed in the inlet of the power cylinder, and the guide support and the upper mechanism of the pulling

devices are mounted on a common axis.

FIG. 1 shows the proposed machine, a general view; in fig. 2 - the same as the working position; in fig. 3 shows the basic scheme of the maschina.

The machine for pruning knots from fallen trees contains a self-propelled vehicle 1 with a turntable 2, a guide support 3 with a sliding Oalka 4, and, at the end, a cutting-cutting head 5, a pulling device with an upper mechanism 6 and a lower mechanism 7 n. tray 8. Turntable platform 2 is made with brackets 9 and 10, between which the lower mechanism 7 of the pulling device is mounted. The guide bearing 3 with a retractable beam 4 and the upper mechanism 6 of the pulling device are mounted on the arm 10 of the turntable 2 with the help of a parallelogram mechanics formed

the upper hinge link 11 and the lower hinge link 12. The other two sides of the aralogram mechanism constitute the bracket 10 and the guide support 3. One link (for example, the upper one) of the parallelogram mechanism can be made in the form of a power cylinder. The drive and the parallelogram mechanism is carried out by a power cylinder 13 hinged on the rotary platform 2. The receiving chute 8 is mounted on the bracket 9 of the swivel platform 2 and can be made rotatable from the power cylinder 14. To simplify the design, the guide support 3 and the upper mechanism 6 of the pulling device can be mounted on a common axis 15. A feed mechanism 16 is mounted on the guide support 3 for moving the beam 4 with the gripping-cutting head 5 on the guide support 3.

Maschina works as follows m.

The gash is placed against the lying trees so that their commies are in the zone of action of the gripping cutting head 5. The power cylinder 13 lifts the guide support 3 with the exhaust beam 4 and the upper mechanism 6 using a parallelogram mechanism, opening the dragging device. The extendable beam 4 with the gripping-cutting head 5 is moved to the butt of the lying trees with the help of the feeding mechanism 16, while simultaneously tilting them with the help of the power cylinder 11. retractable beam 4 in the direction of the machine, lay in a dragging device. In this case, the platform 2 is rotated, aligning the tree trunk with the axis of the working equipment. The guide rail 3 with the extendable beam 4 and the upper mechanism 6 of the pulling device is lowered onto the tree trunk, pressing it with the entire weight of the equipment to the lower mechanism 7 of the pulling device. The mechanisms of the pulling device are turned on and the tree is pulled through the gripping cutting head 5. At the same time, by connecting the working equipment to the turntable using a parallelogram mechanism, the upper mechanism of the pulling device is pressed to the trunk of the tree being processed depending on the cutting forces

The branches, i.e., with an increase in the resistance to cutting the branches off the tree, the pressing of the upper mechanism 6 of the pulling device automatically increases. In this way, optimum clamping of the mechanisms of the pulling device to the surface of the treated wood is done. To speed up the processing of a tree simultaneously with its movement, a dragging device can

The feeder mechapism 16 is turned on to move the gripping-cutting head 5 towards the moving tree.

Komleva part of the processed tree moves on reception. tray 8 to the end

processing it, and then dropped to the ground. The cycle of operation is repeated.

Form m u l and JJ 3 about b and e and

Claims (3)

1. A machine for pruning knots of fallen trees, including a self-propelled engine on which a turntable is installed, a guide support with a retractable beam having a gripping-cutting head, a pulling device with upper and lower mechanisms and a receiving tray yushch and with the fact that, in order to increase the efficiency of work, on the turntable are two kroishteyn, between which the lower mechanism of the pulling device is installed, while the receiving tray is fixed on one of the brackets, and on the other by means of a parallelogram mechanism - a guide support with a retractable beam and upper mechanism of the pulling device. 2. The machine according to claim 1, characterized in that one of the links of the parallelogram mechanism is made in the form of a power cylinder. 3. Maschina on PP. 1 and 2, characterized in that the guide support and the upper mechanism of the pulling device are mounted on a common axis. Sources of information taken into account in the examination: 1.Avt. St. No. 425792, cl. In 27G 1/00, 1974. 2. Avt. St. 4,91471, cl. In 27G 1/00, 1975 (prototype).