SU42682A1 - Device for feeding logs or logs in the sawmill frame and receiving lumber - Google Patents

Description

The main author's certificate No. 29550 describes a device for feeding logs or bars into a sawmill frame and receiving sawn timber, in which, simultaneously with the use of grooved shafts, transverse movements of the log or bar and twin wheels are used to rotate the log, using endless conveyors carrying two groups of traverses from which the first group serves exclusively to support the bar supplied by the logs, and the second group is supporting the logs in curved places; The traverses of both groups are guided on the working branch of the conveyor by rails, and the support for the support of the log is made from the central place of control. In addition, in the same device, there are special traverses for retaining the log, an additional conveyor for receiving sawn timber, and a device for eliminating the jumping of a log or bar.

According to the invention, in a modified, similar device, a mechanism is applied for fixing the position of a log mounted with conventional pivoting rollers, comprising an endless chain located above the log with spikes on the links and with supports adjustable in the vertical direction in accordance with the thickness of the log. Then, a chain conveyor is used to supply the log to the frame, provided with grippers at its links, buffer rollers to support the log, a special chain conveyor to retract sawn boards, a device to rotate the log near its axis, and a conventional log-hauling located along the common line of conveyor devices serving filing.

In FIG. 1 shows a side view of the device proposed; FIG. 2 is a cross-section along the line AB in FIG. one; FIG. 3-Ia along the CD line in FIG. one; FIG. 4 is the same along the line EF in FIG. one; FIG. 5 is the same along the line GH in FIG. T; FIG. b-side view pozadiramny overhead conveyor; FIG. 7- cross section of it.

The proposed device for feeding logs or logs is of a conveyor type, located along the axis of the forest and divided along its length into three flights. The first span, a (Fig. 1), is a live break log, located along the axis of the Lasoram; Feeding logs from the pool The logging machine's cage is powered by a separate motor that is under the floor. The switching takes place by means of an electric current chopper supplying the breakthrough electric motor.

The log coming from the pool advances at the end of the elevator of the log-drag to the protrusion of the network switch and opens the circuit with its own weight, as a result of which the electric motor stops working.

If it is necessary to transfer the log to the intermediate spans, the butt sawmer, at the place of its control of the conveyor, turns on the breaker / breaker motor. The latter includes a power supply network for the electric motor of the log-haul and the log of the log-breaker is transferred to the intermediate span, while simultaneously supplying the next log from the pool. When the log has completely shifted from the first span of a to the intermediate span, span b, thus freeing the protrusion of the network switch at the logging station, the butler filer releases the switch / motor of the haul truck.

The spring of the knife switch at the place of control of the conveyor automatically opens the power supply network of the log motor and the spring of the grinder on the log breaker automatically. Turns on it and the next log continues on its way until it hits the switch for another time.

The second span b is a roller conveyor 2 on the brackets, which has special special rollers (Fig. 1-4) for turning the log, i.e., fitting it according to the marking, and a device for fixing the log that has been installed and transmitting it in the prescribed form It is a working KOitweier with, without giving him a chance to reverse the longitudinal axis of the log when moving it along this roll table.

The introduction of intermediate span b is caused by the need to catch up with the bregzno on the working conveyor c, which, during the time of the logging operation, cant and fix the logs set by the metric and to carry out the cant and fixes of the log.

The device of the roller table 2 is normal and receives movement by a special motor in the ground floor, which includes a switch /.

The cantilever fixture (Fig. 4) consists of 5 levers b mounted on two brackets, carrying corrugated rollers 3.

Under the action of the spring 7, the grooved rollers 3 with levers b tend to be in the unclenched state, i.e. they do not come into contact with the log. If it is necessary to install the log according to the mark, the butt sawer, in the place of its control, presses the pedal 8 and, through a system of levers 9, 10, 11, presses the spring 7 and brings the grooved rollers 3 into contact with the log. The grooved rollers 3 are driven by a chain of Gall 72 from the sprockets mounted on the shaft 13, which is obtained from the rotation of the motor 4 (Fig. 2).

The fixture 14 for fixing the established by conventional rollers on the ketik of a log is an endless chain 15 mounted on two asterisks 16 with points on its links (Fig. 14). This device is placed under the floor of the platform for controlling the butt sawer and is located above the log lying on the roller table 2. The fixation device has the ability to vertically move any known device 17 from the steering wheel 18 in accordance with the thickness of the log.

Before starting the delivery of the logs installed by the roller conveyor 2 to the working conveyor, the chain 15 with the tips is led to the upper forming log, into which it is cut. When switching logs installed according to the mark on the roller table 2, the log carries the chain 75, driving it in motion. The edge of the chain penetrated the log along its length, without letting eriy rotate around its longitudinal axis during the passage along the rollers of the roller table 2.

The third span from the proposed device, in contrast to the existing feeds in the sawmill frames, namely the feed by the drums, is a conveyor (Fig. 1 and 2).

Two endless chains 19 are driven by asterisks 2 (impaled

on the shaft 2 / rotating in bearings 22 installed along the entire length of the conveyor and channel bars 24 fastened to the frame (Figs. 1 and 2). On chains x 19 mounted transverse cross member 25 with grippers 26. Under the action; springs 27 grippers 25 have a tendency to be in a compressed state; the same spring 27 holds the log when sawing.

At the beginning and at the end of the conveyor, the rollers 2c are located on the cam surfaces 29. In this case, the spring is automatically pressed and the claws are ready to be seized at the beginning of the conveyor and tempering at the end of the conveyor belt of the log. Buffer rollers 30 (Fig. 1 and 3) are mounted on the same chains 19; they serve as beds and buffers to compensate for the irregularities and curvature of the log as the latter passes through the log of the forest.

The working conveyor is driven by a friction pair of logging stations 31 and 32. A worm to a small friction clutch drives a worm gear 34 mounted on shaft 2 / - with sprockets of a 20-conveyor chain 19. Thus, the friction pair is under the floor and protected from contamination sawdust. A large friction clutch 31 is driven by a counter drive of the first floor of the barn. The transfer of a small friction clutch is a system of levers 55, 36, 37, 38, 39 from the place of control of the conveyor of the commercial saw.

Frame overhead conveyor (Fig. 6) is arranged according to the principle of a working conveyor in front of the frame. It differs from the latter only by the hooks /, which have the appearance of hanging trucks; The grippers behind the frame conveyor, as in the working conveyor in front of the frame, tend to be in a compressed state. The latter is reached by a spring that does not hold the sawn log after the frame in a suspended state. During the passage of the log through the frame, the clamps behind the frame conveyor, and with them and the continuous chain, are held by the log and thereby drive the sprockets and the chain. To pass through the frame of the end of the last log, the chain sprockets behind the frame conveyor are connected by an appropriate clutch of wire. At the end of the conveyor when placing the log and gripping it up the chain of the board

supported by roller tables 2, which completes the promotion of the log through the frame and after the frame until the boards are transferred further in accordance with the technological process.

P bukhas in the logs are not stored in the form of feed leads, but in the form of guides that keep the log from lateral displacement during sawing.

The subject matter of the invention.

Claims (6)

1. In a device for feeding logs or logs to a sawmill and receiving sawn timber, as described in author's certificate No. 29590, a mechanism for fixing the position of a log set with conventional pivoting rollers, characterized by the use of an endless chain 75 above the log (Fig. 1) its links and with adjustable up and down, in accordance with the thickness of the log by its supports, what the chain is carried into the movement of the log when moving it by the roller path. 2. In the device, described in the author's certificate No. 29590, a chain endless leading log to the frame is a conveyor, characterized by applying to its links x spring lever grippers 26 (Fig. 2) for the log, which interact at the ends of the conveyor with cam-shaped surfaces 29 for clamping logs at its entrance to the conveyor and freeing it from the place of vanishing from the latter, which the conveyor receives movement from the usual frictional feed mechanism of the sawmill, only placed not in it, but at the receiving end of the conveyor. 3. In the conveyor of claim 2, the use of spring buffer rollers 30 for supporting the log (Fig. 3). 4. In the device described in the author's certificate No. 29590, use for removal from the sawmill of a group of plank chains of an endless conveyor sawn on it (Fig. 6), similar in type to the conveyor described in section 2, located above the log and set in motion output a bunch of sawmill from a sawmill. 5. In the device, described in the author's certificate No. 29590, using to rotate a log near its axis rollers 3 (Fig. 1 and 4), supported in the arms of the levers 6, under the action of the spring 7, trying to keep the rollers apart, moving closer what rollers are made by means of a lever mechanism from the control point. 6. In the device, described in the author's certificate No. 29590, the use of a conventional logging machine located along the common line of conveyor devices serving the supply.