CS211699B1 - Mounting of disc wheel on to a hub - Google Patents

Description

The invention provides for the mounting of a disc wheel with a wheel hub which allows, for example, a gradual change in the track width of a tractor.

Embodiments are known which allow a stepwise change in gauge by means of shoes fixed from the inside to the frame. By alternating the two abutment surfaces of the discs and the two abutment surfaces of the disc, it is possible to fix the frame with respect to the disc in four positions. By turning the disc against the wheel hubs, the positions can be doubled to eight. By suitably selecting the shoe width, the shoe position relative to the frame axis, the disc depth, and the disc offset, arbitrary, mutually equal distances between said eight frame positions can be achieved, thereby achieving eight regularly graduated track widths. A drawback of this solution is its property that, according to the design, either two adjacent positions are achieved by turning the wheel, either only two adjacent positions are achieved without turning the wheel.

For smaller track widths, this characteristic causes the tire valve to collide in the inward direction with the axle parts, mainly the steering mechanism for steered axles.

CalŠíra The drawback of this solution is that a separate rotating disc with a suitable offset is required to make the oscillation degrees oscillating.

Another drawback of this solution is that the frame must be provided with feet, the manufacture and u.pevnenie to the frame is usually technologically demanding and thus expensive.

The above-mentioned drawbacks are eliminated by the fastening of the disc wheel to the wheel hub, which allows a stepwise change of the track according to the invention, the principle being that the wheel hub is circumferentially provided with protrusions with holes for the mounting screws of the disc,

1699

1699 the disc is transferred on both sides of the protrusions and with the centering surfaces for the disc transferred in the lug of the protrusions on both sides of the protrusions.

The projections on the wheel hub are arranged in several rows such that opposite to the gap between two projections in one row, the projection is always in the opposite row. The disc is provided with a recess at the periphery of the central aperture to allow the disc to be moved through the projections of the wheel hub.

The disc wheel is fastened by the disc to the abutment surfaces of the projections, whereby it is possible to obtain, in two rows of projections 4, regular graduated gauges without rotating the disc wheel. By rotating the disc wheel it is possible to obtain a further 4 regular graduated gauges following the 4 gauges of the former. Achieving four consecutive gauges without turning the wheel makes it possible to position the valve at four consecutive gauges from the outside of the vehicle, thus preventing the valve from colliding with the mechanism for smaller gauges.

In the accompanying drawing, an example of a mounting of a disc wheel on a wheel hub according to the invention is shown, in which Fig. 1 is a cross-sectional view of the hub with a disc wheel; A more detailed drawing A with a projection on which the disc is mounted and in Fig. 3 is a view of the hub in the indicated direction P.

The wheel hub 4 is circumferentially provided with projections 4 with holes for the fastening screws 4 of the disc 6. The protrusions 4 are provided on both sides with the abutment surfaces 4 for the disc 4 and the centering surfaces 4 for the disc 4, which are provided in the five protrusions 5 on both sides of the protrusions 4. The projections 4 on the wheel hub 4 are arranged in two rows such that opposite to the gap between the two projections in one row there is always a projection in the opposite row. The disc 4 is provided with a recess 7 at the periphery of the central opening to allow the disc to be moved axially over the lugs 4 of the wheel hub 4. /

The disc wheel is fastened by the disc 6 to the abutment surfaces 4 of the protrusions 4, whereby it is possible to obtain, in two rows of protrusions 4, regular, stepped gauges without rotating the disc wheel, marked £, £, £, £ 4. By rotating the disc wheel to the position indicated £ and fixing the disc na to the same abutment surfaces výstup of the protrusions ďalšie, it is possible to obtain a further 4 regular graduated gauges designated £, £, £, 18, 18.

Claims (3)

SUBJECT MATTER Attachment of a disc wheel to a hub, for example, in a tractor, a gradual change in track width, characterized in that the wheel hub (1) is circumferentially provided with projections (2) with holes for fastening screws (3) of disc (4), bearing surfaces (5). / for a disc converted on both sides of the projections and with centering surfaces / 6 / for a disc converted into a fifth projection on both sides of the projections. 2. Attaching the disc wheel to a hub according to claim 1, wherein the protrusions on the wheel hub are arranged in a plurality of rows so that opposite to the gap between the two protrusions in one row there is always a protrusion in the opposite row. 3. Fixing the disc wheel to a hub according to claim 1 or 2, characterized in that the disc (4) is provided with recesses (7) at the periphery of the central opening to allow axial displacement of the disc (4) over the lugs (2) of the wheel hub (1).