SU918207A1 - Device for emergency deenergization of conveyer drive - Google Patents

Description

I

The invention relates to industrial vehicles, namely, devices for emergency shutdown of a conveyor drive.

A device for emergency shutdown of a conveyor drive is known, comprising a drive sprocket with a depression connected by means of a safety element to a sleeve and connected with a pusher fixed on the sleeve for interaction with a limit switch t13.

To remove the cut safety element in this device, it is necessary to use a special tool, and the dropped out parts of this element can jam the rotating parts of other components.

It is also known a device for emergency shutdown of a conveyor drive, comprising a hub rigidly mounted on a drive shaft, a gear wheel connected to the hub by a safety element destroyed at extreme loads, pushers made with the possibility of reciprocating motion during rotation of the hub relative to the wheel, a washer elastically pressed to the pushers, and the limit switch, which is installed non-movably with the ability to interact with the washer when the safety element 12 is destroyed.

This device has the same drawbacks as the device described above.

The aim of the invention is to simplify maintenance and reduce time simply by replacing the safety element.

Claims (2)

For this, the gear wheel is made with a flange having a transverse groove on the outer surface, and the hub is made with a groove aligned with the groove on the flange, while the safety element is placed in both grooves, cut-out and provided with fixed 3918 ribs with projections placed in the notches. FIG. 1 and 2 shows the proposed device. The device for emergency shutdown of the conveyor drive comprises a drive shaft 1, on which a hub 2 with conical hollows is fixed, connected by a safety element made in the form of an inset finger 3 with a gear wheel k. The cylindrical pushers 5 with integrated balls 6, located in the gear wheel, enter the conical hollows of the hub 2. To the pushers 5 with the help of t g 7 and the washer 9 K washer is pressed. 9, the double-shouldered lever 10 is pressed with a spring, gland 11. The lower end of the lever 10 contacts the limit switch 12. The safety element is located in the aligned grooves of the inserts 13 fixed in the hub 2 and the gear train 4. There are cutouts in the safety element in which the projections are located Fixing strips 1A attached to the outer surfaces of the hub 2 and the gear wheel f. The device works as follows. When the load on the drive shaft 1 does not exceed the limit, the hub 2 rotates together with the gear wheel C, and the washer 9 is pressed against the pushers 5 by the force of the springs 8. In case of exceeding the limit load on the drive shaft 1, the safety element collapses and the hub 2 begins to rotate relative to the gear wheel k whereby the balls 6 emerge from the conical depressions of the hub 2 and, acting on the pushers 5 which extend from the gear wheel k, move the washer 9 along the axis of rotation, while the washer 9 displacing the lever 10 t to limit switch 12 and the conveyor drive is turned off. The parts of the destroyed safety element 3 remain in the inserts 13 held by the projections of the strips 14. Arranging the safety element, made in the form of an inset finger 3 in the combined grooves of the outer planes of the gear wheel and the hub, allows you to easily remove the parts of the destroyed finger 3 and install a new one. Such a design eliminates jamming of the finger 3 in its socket or jamming of other assemblies and mechanisms leading to just m conveyors. Apparatus of the Invention A device for emergency shutdown of a conveyor drive comprising a hub rigidly mounted on a drive shaft, a toothed knee connected to the hub of a safety element destroyed at maximum loads, pushers made with the possibility of reciprocating motion during rotation of the hub relative to the wheel, washer, elastically pressed the K pushers, and the limit switch fixedly mounted with the possibility of the MODE to engage with the washer in the destruction of the safety element, so that, in order to simplify maintenance and reduce time, simply by replacing the safety element, the gear wheel is made with a flange having a transverse groove on the outer surface, and the hub is made with a groove aligned with the groove on the flange, while the safety element is placed in both grooves, made with cutouts and provided with fixed strips with protrusions placed in the cutouts. Sources of information taken into account during the examination 1. USSR author's certificate №, cl. In 65 G, 1978. 2. USSR author's certificate №. cl. B 65 G 3/00, 197 (prototype).