SU93930A1 - Safe drive for cotton machines - Google Patents

Description

The invention aims at improving the safety of servicing cotton machines and reducing physical effort during manual machine shaft rotation.

The proposed drive is characterized in that the rotation of the main shaft of the machine from the electric motor is carried out through an intermediate shaft on which the free running sleeve is fixed. The casing of this sleeve is kinematically connected with the hand drive shaft so that when the machine is running from the electric motor, the hand drive is not possible. The main shaft of the machine is rotated by hand when the free-wheel bushings of the free-running sleeve between its casing and the core are closed. An additional free-wheeling bush is installed on the hand drive shaft to prevent an arbitrary retraction of the brush. To reverse the shaft of the machine on the intermediate shaft, a ratchet device of the usual "Instructions.

FIG. 1 shows a clutch of a safe drive with a cotton machine and an electric motor; in fig. 2 — freewheel hub, fixed on the intermediate shaft, and the coupling of the intermediate shaft to the manual drive shaft; in fig. 3 - braking device; on

FIG. 4 - view of the ratchet device for reverse rotation of the machine shaft.

The intermediate shaft 4 (Fig. 1) of the safe drive is located down along the frontal side of the cotton maschine and is connected to the electric motor 5 by means of a sprocket 7 and a chain, and to the main shaft / cotton machines by gears 5 and P. shown by firs A and B.

For a slow rotation of the main shaft / cotton maschina by hand on the drive shaft 4 (Fig. 2), a mechanism in the form of a free running sleeve is installed, consisting of a core // fixed on the shaft 4 with notches 10, an annular casing 12 and rollers 13. Intermediate the shaft 4 is connected to the shaft 5 of the manual drive through a chain of 15 W. sprockets 14 and 16.

The action of the safe drive is as follows.

The rotation from the electric motor 5 is transmitted through the intermediate shaft 4 to the main shaft / cotton machine. At the same time, the core // freewheel bushings rotate freely with the shaft 4, i.e. idle, and the housing / 2, the sprockets 14 and 16, the chain 15, the flywheel 2 and the shaft 3 remain at rest.

When you stop edekt.dviga, tvld. and the need to rotate the main shaft of the machine by hand rotate the flywheel 2 in the direction of the arrow C. In this case the rotation of the flywheel 2 b) will be transmitted through the chain 15, the chain "-wheels 14 and 16, the casing 12, the rollers 13, the core 11 to the shaft 4 and then through gear-wheels 8and R..na main shaft 1 maschiny. Thus, the rotation of the main shaft of the machine is accomplished by wedging the rollers of the freewheel sleeve between the casing and the core.

To prevent an arbitrary inverse process, the li-by mapisha would. the operation of its stop in the desired position on the shaft 5 of the hand drive is installed an additional freewheel hub, - actuating the braking device.

The freewheel bush consists of a core 17 (FIG. 3) with recesses 18, a casing 21 and rollers 19. A casing 2 /. It has a protrusion with an eye / 2 to which a ha is attached. 23. The other end of the cable is attached to the brake shoe 27 with a pad 24 covering the surface of the brake drum 25 rolling along the outer edge of the gear. One of them; the brass hinge 27 is attached to the fixed support 26, and the other end falls under the action of the spring 25.

After switching off the electric motor 5, the flywheel 2 is rotated. In the direction of the arrow D. The freewheel is wedged, the pad B is pressed against the brake drum 28, which is connected to the wheel 9, with the action of the rod 23, the machine stops.

For reverse rotation of the main shaft / cotton machine on the intermediate shaft 4 mounted ratchet device of conventional design. On the intermediate shaft 4, a double-arm lever 31 (FIG. 4) is freely mounted, connected to the spring 32. When exposed to

The pedal 30 is in the direction of the E track. The dog 33 rotates the rapid wheel 34 fixedly mounted on the shaft 4. The rotation of the shaft 4 is transmitted by means of toothed gears 5 and 5 to the main shaft 1 according to arrow F.

Subject invention

Claims (4)

1.Safe drive for cotton masonry using a freewheel hub, characterized in that the main shaft of the machine is being rotated from the electric motor through an interim shaft, located below along the front of the machine, with a free running sleeve fixed on it, the casing of which is chained kinematically to the hand drive shaft so that the rotation transfer during the machine’s operation from the electric motor to the hand drive shaft is impossible due to the free stroke of the sleeve. 2. A safe drive according to claim 1, characterized in that the rotation of the machine by the worker is realized by jamming the free-wheeling rollers between its K0xyxo r and the core. 3.Safe drive on PP. 1 and 2, characterized in that in order to prevent the machine from reversing arbitrarily, an additional freewheel sleeve is installed on the manual valve shaft, jamming during the machine's reverse travel and by means of a pull connected to its casing, activating the braking device, twisting reverse machine. 4.Safe drive on PP. 1 and 2, characterized in that for adjusting or repairing a slow rotation of the main shaft of the machine, a ratchet device of the usual design is provided on the Intermediate shaft, operating from the foot pedal and turning the main shaft with gentle pushes when pressing the pedal. and / g