SU78613A1 - Universal chain drive chain saw - Google Patents

Description

The subject of the invention is a universal chain-saw, the features of which are the presence of a folding cantilever tire with a special swivel-tensioning or clamping device for folding the weir of the sawing device, as well as the vertical positioning of the saw, one is attached to the fan casing, and the other to the cheek of the saw rest.

FIG. 1 shows a schematic universal chain saw, side view; in fig. 2 - the same plan view; in fig. 3 - pivot clamping device saw, front view; in fig. 4 is the same, in section along A-A in FIG. 3; in fig. 5 is the same in the section bB of FIG. 3

The saw has the following components and parts (Fig. 1-2): an electric motor / with external stator blowing, mounted perpendicular to the sawing apparatus. The back cover of the electric motor has a tide 2, which simultaneously serves as a stop for the saw and the attachment point of the right handle and the saw bar. The saw apparatus consists of a cantilever saw bus 3, a fine-stranded serial saw chain, a drive sprocket 4 mounted on the motor axis of the electric motor, a driven sprocket 5 freely rotating in the cage of the damping head 6, and a pivoting tension and pressure device 7 tires.

Two vertically positioned handles, of which the left 8 is attached to the fan casing of the electric motor, and the right 9 rises above the saw and is attached to the tide 2 (cheek) of the saw rest.

Two-phase drum-type switch.

. The position of the saw's handles is in principle different from the generally accepted placement on other saws, which ensures the stability of the saw in the hands of the mechanic and the possibility of using rule No. 78613.2

As a lever, creating a moment for pushing the saw over the wood and conveniently carrying the pad on the shoulder in working or folded form, there is no need to bend the electric saw over the whip during the cutting, balancing the weight of the saw in the roll and cutting positions.

As VI1NO in FIG. 1, the right hand grip is made with a significant excess over the left. Minder's hands are removed from one another by a distance (straight) of 35-40 cm. The right and left handles are in close proximity to the center of gravity of the saw. The position of the sawing device, when held with one right or one left hand grip almost horizontally, which makes it easier to hold the saw with your left hand, allows you to maneuver the right hand, and allows you to cut through the cutting with keeping the saw in one right hand.

FIG. 1, the flat lines show the position of the saw in the working CONDITION and the dotted line when folded.

The folded saw has small dimensions, is transportable and easy to store. The folding tire facilitates and accelerates the change and tension control of the saw chain, which is achieved by using a combined swivel clamping device.

This device consists of the following parts (Fig. 3-5). At the end of the saw bar, but both sides of the keyway, two brackets 10 and 11 are tightly clipped. Bracket 10 has a stud 12 threaded under the tensioning head of the nut 13. A groove 14 moves along the tire slots in the slots of the brackets. To the slider 14, the clamp 16 is riveted with an annular recess intended to hold the clamping nut 17 with the lever.

The assembly of the saw apparatus is carried out in the following order: the saw tire is slid on the stud 18, tightly embedded in the neck of the nila support. Screwing the presser nut tightens to the level of the key, turns at a certain angle necessary to freely put the saw chain on the sprocket, after which the tire rotates to the working position until the keyway coincides with the key itself and simultaneously tension the saw chain adjusted by the tension nut 13.

After the chain is tight, the nut 17 with its lever is tightened to failure and the saw unit is ready for operation.

The described saw can be used for felling trees, cutting off large branches and cutting the boughs of cleaved whips.

In addition, with this saw, it is possible to cut large-sized logs, cut ice, tuff, etc.

This saw can be used in construction.

Subject invention

Claims (3)

1. The universal chain motor saw of a single control, characterized in that it is made with a folding cantilever tire and a vertical arrangement of the handles. 2. The form of the saw according to claim 1, characterized in that the folding or taking-off of the saw apparatus is carried out by means of a pivot-and-tension and clamping device of the saw bar. 3. The shape of the saw according to claim 1, is different in that, in order to ensure the stability of the saw in the hands of the motorist, the left hand grip is on the fan casing of the electric motor, and the right hand to the cheek of the saw rest. ) € gg g§ggFJl r / i  , hT J; L l.J - j .J:, -:, - -: .. 45-iMii-- jv  7: 5 ®К§1.1Ж5§ ®т-1 JO " pp dj // FIG ..