DK150338B - ADDITIONAL ADJUSTMENT FOR EXTRA WHEELS, PARTS ON TRACTORS - Google Patents

Description

150338

The invention relates to a device for attaching an extra wheel next to a more permanently arranged wheel, which device is of the kind specified in the preamble of claim 1.

Prior art devices of this kind include fasteners by which the extra wheel is attached to the more permanently placed wheel by special fittings welded or screwed to the wheels or wheel discs of the wheels. However, such special fittings represent a considerable cost and it is the object of the invention to provide a device by which an additional wheel can be attached to a more permanently arranged wheel utilizing the groove open against the rim axis in the rim which has emerged as a "by-product" of a special design of the rim to strengthen its edges and protect the tire from overload.

The stated object is achieved by a device which according to the invention is characterized by the characterizing part of claim 1. Hereby it is obtained that the edge grooves, which have not hitherto been used for this purpose, can be utilized to form a solid: connection between the rims.

In the embodiment according to claim 2, it is achieved that the edge groove of the extra wheel can also be utilized to form the fixed connection between the rims of the two wheels.

In the embodiment according to claim 3, a very large engagement area is obtained between the connecting elements and the edge grooves. While the further development thereof as claimed in claim 4, some of the engagement area is forfeited, but on the other hand it is easier to attach the wheels to each other in cases where the wheel rims have been subjected to bumps which form indentations in the edge grooves. 1

In the embodiment of claim 5, it is achieved that the fastening elements can be operated from an easily accessible place, namely at the wheel axis.

2 $ 15033

In the embodiment of claim 6, it is achieved that the device can remain attached to the extra wheel, whether or not it is attached to the more permanently placed wheel.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be explained in more detail below with reference to the exemplary embodiment of fasteners according to the invention, fig. 1, 2, 3 show a structure based on an expandable ring penetrating the edge grooves and connecting the rim of the tractor wheel with the rim of the extra wheel; 4, 5 shows a structure in which separate radially outwardly moving elements connect the wheels of the wheels to each other, and fig. 6 and 7 show a variation of the preceding construction, 15 in which the mechanism which displaces the fastening elements is attached to the rim of the extra wheel.

On the rear axle 1 of the tractor is mounted a wheel 2, whose rim 3 is provided with edge groove 4. The additional wheel has a similar rim 5 and these rims are connected to each other by means of a connecting ring 6. This ring consists in this embodiment of two parts which are displaced by means of a joint mechanism 7 and a screw mechanism 8. The ring 6 may also consist of one, three or more parts. The ring 6 may also have curved edges 9 which are pressed against the bottom of the grooves 4 by means of the joint and screw mechanisms.

If the wheels of the wheels are of different sizes, a connecting ring with similarly odd edge flanges 9 is used. The ring 6 may also be angular, as shown in FIG.

3. It is simpler to mount such a ring on the wheel rims, whose rim groove may have bends caused by impact or the like.

The FIG. 4 and 5 have several connecting elements 10, and these are pressed radially to the bottom of the grooves

Claims (2)

150338 4 on the wheel rims using a special clamping mechanism. This consists of arms 11 and 12 which are jointed with the fastening elements 10, washers 13 and 14 connecting the other ends of these arms to each other, and a screw 15 by means of which 5 the washers 13 and 14 can be displaced either towards or apart. When the auxiliary wheel is attached to the traction wheel, the washers 13 and 14 are displaced from one another, whereby the arms 11 and 12 pull the connecting elements towards the center axis and the fastening device can be placed between the tractor wheel and the auxiliary wheel. As the screw 15 is tightened, the connecting elements 10 move away from the center axis and penetrate the grooves 4 and provide a connection. In the construction of FIG. 6 and 7, a base disc 17 is attached 15 to the additional wheel by means of a number of screws 16 connecting the disc 17 and the rim of the additional wheel. A clamping screw 18 and one of this supported connecting disc 19 are attached to the base disc 17, and arms 20 carrying connecting elements 10 are articulated to the disc 19. The fastening is done by placing 20 the extra wheel in the right place, after which the arms 20 are brought to pushing the connecting elements 10 into the rim grooves 4 by tightening the screw 18. PATENT REQUIREMENT. Device for attaching an additional wheel to the side of 25 a more permanently arranged wheel, especially on agricultural tractors, and wherein the wheel rim (3) of at least the permanent wheel has an edge bent inward to form a counter-shaft open groove (4), characterized by fastening elements (9, 10) which are adapted to be engaged in said groove (4) and form a fixed connection between the rims (3). Device according to Claim 1, characterized in that the connecting elements (9, 10) are arranged to also integrate.