SU950629A1 - Apparatus for turning logs - Google Patents

Description

The invention relates to the timber and woodworking industry, and specifically to devices for orientation of logs, and can be used when feeding them into sawmills, debarking and other woodworking machines.

A device for turning the logs is known, comprising two parallel drive longitudinal conveyors, a transverse longitudinal conveyor between them transversely and installed along the normal to the trough, an inclined spreading plane and two drive rollers, the turning plane made in the form of a semicircle with a side and the rollers have a common the axis and are set at the same distance from the axis of symmetry of the turning plane.

The log with the vertex end of one of the longitudinal conveyors enters the tree mounted behind it (which guides the specified end of the log to the turning plane.

When ascending along this plane, the log is directed by the board and rolls, vertically, forward onto an outboard conveyor.

If the log is fed with the butt end forward, then it is directed by a transverse conveyor to another longitudinal conveyor and a drum adjacent to it, and then, by means of a reversal plane with a board, the log forward with its end flies to the outboard conveyor fl}. Q A disadvantage of this device is the complexity and energy-intensity of the structure, since each of them has four drive conveyors, two drive rollers.

The closest to the technical essence and the achieved result is a device for turning the logs, including a cross conveyor with two parallel driven traction bodies and located

20 between the traction bodies in the gutter with sloping walls is an external longitudinal conveyor.

The rotation of the logs on this device occurs due to the difference in the speeds of movement of the traction organs of the transverse cable conveyor f2j.

Claims (2)

The disadvantage of this device is that it is unreliable because of the possible hangs of the butt 30 ends of the logs, especially long ones, when they are transferred to the remote conveyor apex forward, and the ends of the butt ends of the logs caused by the significant weight of the butt parts of the logs butt end and traction body holding these ends. These hangs cause a malfunction, which degrades the performance of the device. The purpose of the invention is to increase the reliability of the device. The goal is achieved by the fact that each inclined wall of the gutter is made in the form of several planes with longitudinal projections at the point of their intersection, while the longitudinal projections are angled to the remote conveyor in the direction of removal of the log. In addition, the traction bodies of the cross conveyor are installed at an angle to the remote conveyor in the direction of the log removal. Figure 1 shows the device, the type of reconciliation; Fig. 2 is a section A-A in Fig. 1; in fig. 3 - section bb n fig. one; in fig. 4 shows a section B-B in FIG. 1. The device for turning the logs contains a cross conveyor with two parallel traction bodies 1 and 2, which have individual axial drives 3 and 4, a remote conveyor 5, for example, made about an individual drive. A longitudinal extension conveyor 5 is located between the traction bodies 1 and 2, in a groove made, for example, in the form of two inclined walls b and 7, which are installed, for example, symmetrically with respect to the longitudinal axis 8 of the conveyor 5. Inclined walls 7 and 8 for example, they are made of three planes, respectively, 9–11 and 12–14, when inclined ribs 15 and 16 form at the intersection. The device works as follows. The log 17 to the device for turning the logs is fed by a loading mechanism, for example, a cross conveyor 18. If the log 17 should be advanced forward with a longitudinal conveyor 5, then the traction body of the cross conveyor on the side of the log carriage enlarges, for example times, the speed than the traction organ from the side of the butt part. FIG. Figure 1 shows the case when the butt end of the log 17 to be turned is fed from the loading conveyor 18 to the traction body I, and the tip end to the traction body 2, the latter switches to the increased speed, the traction body 1 moves at the same speed or stops, and, if necessary, switches to reverse speed. The tip end moves faster, the gate is preliminarily expanded. Upon further movement of the apical end, the latter is dropped on the inclined wall 7 of the chute, carrying along the butt end of the log. The butt end of the log slides along the protrusions 15 formed by the planes 9-11, and the log rotates to roll down onto the plane 11. The log rotates due to the inclination of the traction body 1 and the inclination of the longitudinal projections 15. On the planes 11 and 14 there is a final reversal of the log and it, which is oriented with its top forward, lies on the conveyor 5, which takes the log out of its reversal zone. The device is ready to receive and turn the next log. When feeding the butt end of the log to the traction body 2 and the apical end to the traction body 1, the device operates in the same way. Similarly, there is a reversal of the logs in case the log should be oriented so that the conveyor 5 takes it out of the reversal zone with the front edge. The proposed device ensures reliable rotation of the logs, regardless of whether they are orienting or pointing forward, which eliminates downtime and increases labor productivity. Claim 1. A device for turning the logs, including a transverse conveyor with two parallel driving bodies and an intersectional body in the groove with inclined walls, is a longitudinal transporter, which in order to increase reliability of operation, each sloping wall of the groove is made in the form of several planes with longitudinal protrusions in the place of their intersection, with the longitudinal protrusions located at an angle to the outboard conveyor in the direction of the removal of the log. 2. The device according to claim 1, characterized in that the traction bodies of the cross conveyor are set at an angle to the outfeed conveyor in the direction of removal of the log. Sources of information taken into account in the examination 1. Bragts A.P. and others. Komple; sleep mechanization in the warehouses of raw materials sawmills. M., Lesna industry, 1975, p. 170, fig. 47. 2, Finland patent 43562, cl. In 65 G 47/28, published. 1963 (prototype).