RU195565U1 - MACHINE FOR LONGITUDINAL CUTTING OF LOGS - Google Patents

Abstract

The utility model relates to the field of woodworking and can be used for longitudinal sawing of round logs into a two-edged beam (carriages), unedged boards and slab. The machine includes a device for orienting and promoting logs, a saw block consisting of lower and upper saw shafts with circular saws, each of which is fixed in position in the bearing support units. One of the bearing assemblies of each saw shaft is mounted on a movable leaf located in the window of the saw block wall and pivotally mounted on curved levers, which, in turn, are pivotally mounted on the saw block wall. Bearing units are equipped with seating bushings, which are rigidly mounted on the inner rings of the bearings and in the working position are fixed at the ends of the saw shafts by means of a key connection. The design features of the machine provide free access to the cavity of the saw block for commissioning and repair. Using the claimed utility model allows to increase operational reliability of the machine with high quality lumber. 1 z.p. f-ly. 5 ill.

Description

The utility model relates to the field of woodworking and can be used for longitudinal sawing of round logs on a two-edged beam (carriage), unedged boards and slabs.

Known BG 35-45 and BG 35-55 caterpillar track machines designed for cutting round wood with circular saws into a two-edged beam, unedged boards and a spike containing a frame, two saw shafts cantilever mounted on the machine frame, saws, wedging knives, chain feed logs that stretch rowanas (see http://www.scperun.ru/catalog/brevnopilniv_stanok/) The console mounting of the shafts allows for easy access to the saw shafts, necessary for changing circular saws or repairing parts inside the saw block.

The disadvantage of this machine is that the cantilever mounting of the saw shafts on the frame predetermines increased requirements for the rigidity of the structure as a whole and the saw shafts on the frame in particular, due to the large alternating loads on the saw shafts and saws during the sawing process, which reduces the quality of the final lumber and operational reliability of the machine.

A known machine for the longitudinal sawing of round logs containing a chain mechanism for supplying and issuing logs and a sawing device consisting of lower and upper rotating shafts with their two-bearing mount in bearing assemblies on the walls of the machine, circular saws mounted on saw shafts, pinch rollers and drive exhaust rollers (Utility Model Patent RU No. 182265, IPC В27В 7/00, published on 08/09/2018, bull. No. 22 - prototype).

Two-support fastening of saw shafts can significantly reduce the effect of alternating loads on saw shafts that occur during sawing, which improves the quality of the resulting lumber.

The disadvantage of this machine is the lack of free access to the internal cavity of the saw block, so if you need to change circular saws, or adjust the system to the required size of the resulting lumber, or repair, you have to make a complex, time-consuming disassembly of the entire saw block. In addition, the device orientation and promotion of logs does not provide high-quality fixation of logs and lumber in the sawing process, which reduces the quality of lumber.

The technical problem to be solved by the claimed utility model is the development of a machine for longitudinal sawing of logs, which provides increased operational reliability of the machine with high quality lumber.

The specified technical result is achieved by the fact that in the machine, including the device for orienting and promoting logs, a saw block consisting of lower and upper saw shafts with circular saws, each of which is fixed in position in the bearing bearings on opposite walls of the saw block, according to the declared utility model, one of the bearing assemblies of each saw shaft is mounted on a movable leaf located in the window of the saw block wall and pivotally mounted on curved levers in its turn, pivotally mounted on the wall of the saw block, and the movable leaf in the working position is mounted on the wall of the saw block by means of fixing screws, while the bearing assemblies are equipped with seating bushings that are rigidly mounted on the inner rings of the bearings and in the working position are fixed at the ends of the saw shafts by means of a key connections. The conveyors of the device for orienting and promoting logs are equipped with V-shaped tracks, and the clamping surface of the pressure rollers is V-shaped. The utility model is illustrated by drawings:

- FIG. 1 is a general view of a machine for longitudinal sawing of logs;

- FIG. 2 - side view of the machine;

- FIG. 3 is a sectional view of FIG. 2 by AA;

- FIG. 4 - section of the upper saw shaft with bearing units;

- FIG. 5 is a sectional view of a support bearing assembly mounted on a leaf.

A machine for longitudinal sawing of logs contains a device for orienting and promoting logs and lumber, including a feeding 1, a receiving 2 conveyors and a clamping 3 and exhaust 4 rollers, a saw block 5 with parallel mounted upper 6 and lower 7 saw shafts with circular saws 8, wedging knives 9. The saw shafts 6 and 7 are fixed in the bearing support units 10 and 11 located on opposite walls of the saw block 5, while one end of each saw shaft is mounted directly on the wall of the saw block 5 in the under the bearing unit 10, and the other in the bearing unit 11 on the rotary leaf 12, pivotally mounted on curved levers 13, which, in turn, are pivotally mounted on the wall of the saw block 5. The leaf 12 is installed in the window of the wall of the saw block 5 and is fixed in the working position on the wall of the block with fixing screws 14. Bearing units 11 mounted on the rotary leaf 12 are provided with landing bushings 15, rigidly mounted on the inner rings of the bearings. The bushings 15 in the working position are connected to the ends of the saw shafts by means of dowels 16, providing for the rotation of the saw shafts the relationship - shaft - bushing - bearing.

The curved profile of the levers 13 provides the space between the wall of the block 5 and the levers 13. This allows the sash 12 to maneuver so that it becomes possible to ensure a strictly perpendicular arrangement of the sash 12 relative to the axis of both saw shafts 6 and 7, resulting in an easy fit of the sleeve 15 at the end saw shaft. The feeding 1 and receiving 2 conveyors are equipped with V-shaped tracks 17, and the pressing surface of the rollers 3 is V-shaped.

The work of the machine is as follows. Auxiliary devices log is fed to the conveyor 1 with a V-shaped tracks, where the log is fixed by pressure rollers with a V-shaped clamping surface, which allows for a more complete girth of the log when it is fixed on the feed conveyor 1. Next, the log conveyor 1 is fed into the saw block 5 , where it is cut with circular saws 8. The proppant knives 9 installed behind the circular saws 8 hold the lumber and prevent mashing and overheating of the saws. The sawn log is received by the conveyor 2 with V-shaped tracks, pressed by the upper pressure rollers 3, captured by the exhaust rollers 4 and removed from the saw block. If it is necessary to change the saw blades or change the size of the sawn timber, or repair inside the saw block 5, for example, requiring removal of the saw blades, the sash 12 is unlocked by unscrewing the fixing screws 14, and the sash 12 is pulled out from the window of the saw block 5 wall by removing landing sleeves 15 from the ends of the saw shafts 6 and 7, which is facilitated by the configuration of the levers 13 and their hinge mounting on the wall of the saw block 5 and to the leaf 12. Next, the leaf 12 is pushed to the side, providing free access to the internal transtvu saw unit 5, thus releasing the ends of the saw shafts 6 and 7, which allows for easy removal and installation saws saws to another timber or the size of the repair.

Thus, the design features of the claimed utility model make it possible to have easy access to the internal space of the saw unit for two-bearing mounting of saw shafts for commissioning and repair work, and in combination with reliable fastening of logs to ensure high operational reliability of the machine with increased quality of the resulting lumber.

Claims (2)

1. Machine for longitudinal sawing of logs, including a device for orienting and promoting logs, a saw block, consisting of lower and upper saw shafts with circular saws, each of which is fixed in position in the bearing bearings on opposite walls of the saw block, characterized in that one of the bearing units of each saw shaft is mounted on a movable leaf located in the window of the saw block wall and pivotally mounted on curved levers, which, in turn, are pivotally mounted on enke the saw unit, wherein the movable flap in the operative position the saw unit is mounted on the wall by means of fixing screws, the bearing units are equipped with landing sleeves, which are rigidly mounted on the inner rings of bearings and fixed in the operative position the ends of the saw shaft through key connection. 2. The machine according to p. 1, characterized in that the conveyors of the device for orienting and promoting logs are equipped with V-shaped tracks, and the clamping surface of the pressure rollers is V-shaped.

Images