DE2346137A1 - DEVICE FOR TRANSMISSION OF ROTATING MOTION TO A CYLINDRICAL DRUM OD. DGL - Google Patents

Description

14.237 / 8 30 / el

PATENT LAWYERS

Dr. rer. ind. JpIETFR I OVIS

' Dipl.-Phys. CLAUS PÜHLAl /

I> ip: .- Ing.r.V \ NZ LOHRfNTZ

6 500 NU RN BEU Q

Mr. Ing.Domenico DOMENIGHETTI, Bellinzona / Switzerland

Device for transmitting the rotary motion to a cylindrical drum or the like.

The invention relates to a device for transmitting the rotary movement to a rotatable, cylindrical drum or the like. in which roles are used as bearing and motion transmission elements.

In order to operate the drum properly and an exact, even distribution of the load on the individual To achieve roles, it is proposed according to the invention that to generate a rotary movement for the drum at least a pair of rollers is used, the rollers of which are mounted at the ends of a bearing rocker, the tilt axis of which is at the point of intersection of the two to the drum-side running surface for the

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Rolls at the point of contact of the rolls lies tangents. Preferably there are two pairs of rollers, each are mounted on their own bearing rocker, in two mutually symmetrical support positions for the Drum or the like. Provided.

Due to the design of the motion transmission device according to the invention cannot have any dynamic imbalance with regard to the load on the individual roles Pairs of roles are generated, creating a calm, even and maintains practically smooth movement of the drum.

One area of application of the subject matter of the invention is, for example the motion drive of drying drums in drying devices.

A preferred embodiment of the Invention described with reference to the drawing.

Show it:

FIG. 1 shows partially and in elevation a drum with a transmission device according to the invention and

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FIG. 2 shows, on an enlarged scale, a section along line 2-2 in FIG. 1.

As the drawing clearly shows, the over-, carrying device four drive rollers 11, 12, or 13, 14, which are driven in any suitable manner can be and are stored in pairs on two bearing rockers or 18. All roles 11, 12, 13, 14 act on the same rolling ring 10 on the drum 20. They obviously take the static load evenly the drum on.

The centers of the tilting movement or tilting axes 15 and 16 of the bearing rockers 17 and 18 are at the intersection of the tangents arranged, which in the points of contact of the rollers 11, 12 and 13, 14 with the running surface or the rolling ring 10 at these are laid. The tilt axes 15, 16 are therefore in the extension of the tangential forces exerted by the rollers 11, 12, 13 and 14 on the tread 10 and cause the rotary motion.

This means that the torque which is exerted in the tilt center or the tilt axis of each rocker lever is zero and, as a result, no moment occurs which would lead to a dynamic imbalance of the two rollers 11, 12 or 13 »14 of each bearing rocker 17 or

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18 could contribute and v / elches to relieve the one role and overloading the other role.

The center points or tilt axes 15 and 16 of the bearing rockers 17 and 18 are each of a fork-shaped Carrier 19 (Figure 2) worn.

The rollers 11, 12 or 13, 14 are driven by any Motor driven, not shown in the drawing, and exert tangential forces F1 and F2 on ring 10 which cause the drum 20 to rotate.

The tilt axes 15 or 16 of the bearing rockers 17 and 18 are located at the intersection of these two forces F1 and F2. As a result, the forces F1 and F2 cannot have a moment with regard to a tilting movement of the rockers 17, 18 consequently do not exert any dynamic imbalance in terms of the load on the two roles 11, 12 and 13, 14 of each pair of rollers. This ensures a quiet, even and practically frictionless Movement of the drum.

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Claims (2)

Patent (protection) claims: Device for transmitting the rotary movement to a rotatable, cylindrical drum or the like, characterized in that, that for the rotation of the drum (-20) at least one pair of rollers supporting the drum (11, 12; 13, 14) is used, the rollers of which are mounted on the ends of a bearing rocker (17, 18), the tilt axis of which (15, 16) at the intersection of the two on the drum-side running surface (10) for the rollers at the point of contact of the rolls laid tangents. 2. Device according to claim 1, characterized in that that two pairs of rollers (11, 12 and 13, 14), each mounted on their own bearing rocker (17 and 18), in two mutually symmetrical support positions are provided for the drum (20). 40981 3/0419 Lee r s e ite