FI60169C - BANDDRIVET FORDON - Google Patents

Description

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Ma IBJ OUTPUT N IN NCSSKRI FT Ο ΙΠ Ö? patent expired (51) Q3.3 / int.3a B 62 D 55/20 SUOMI-FINLAND (21) PkMnttlhakwMis - PMMiuntBknlng 79l6ll (22) HakwnlipUvl - AMeknlngvdag 21.03.79 '' (23) AlkupUvi —Gikifh «t * da (28.10.77 (41) Twlhat JulkiMkd - Bllvtt offantllg 21.03.79

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Patent and Register Office of AnXMun selected and licensed public 31.08.8l (32) (33) (31) Pyydetty etuoikeus — Begird prlorltat (71) Konetehdas Maskinfabrik Norcar Ky.Kb., Korsholm, 65 ^ * 50 Solf ,

Suomi-Finland (FI) (72) Kaj Carlson, Singsby, Suomi-Finland (FI) (7 * 0 Oy Jalo Ant-Wuorinen Ab (5M Tracked Vehicle - Telaketjuajoneuvo (62) Jakamalla erotettu chin sleeve test 773232 -Department of application 773232

The invention relates to a belt or caterpillar chain vehicle, in particular its chain belt or belts.

In tire-driven or tire vehicles, the driving and controlling force of the vehicle is usually conveyed to the tire, which may consist, for example, of two endless chains with transverse blocks around two or more wheels on each side of the vehicle, through the rear wheels existing inside the endless chains. sk. drive wheels. These wheels also usually support the rear of the vehicle. In the front of the vehicle there are corresponding, freely rotating wheels, so-called running wheels, over which the chain belts give in the front of the vehicle. Especially in tire vehicles which are intended for use in terrain, these running wheels have a smaller diameter than the drive wheels. Between the drive wheels at the rear and the running wheels to the front there are carrying wheels, often several in succession, which have a smaller diameter than both the drive wheels and the running wheels, and against which the lower part of the chain belts abut. The impeller is arranged in such a way that the chain belts between the impeller and the front carrier wheels form at their lower part an inclined unpaired portion in the direction of travel of the vehicle, which facilitates the movement of the vehicle in terrain and e.g. in snow. It is also possible that the carrier wheels are the same size as the drive wheels, where only one carrier wheel is needed in the front of light vehicles. Even then, it is possible to use the aforementioned impeller, which is slightly ahead of the carrier wheels and whose axle is higher than the axles of the carrier wheel as well as the drive wheels to achieve the oblique direction of the tires in the front of the vehicle.

In vehicles often fitted with rubber wheels, the chain web preferably consists of two chains which run parallel and thereby form the edges of the belt and at the same time its body. The chains are connected to each other by means of cross-linking blocks.

In hitherto known chain belts, the edge chains are attached to the cross blocks, such that when the belt chain is mounted on the wheels, the successive links of the links are alternately perpendicular to the axis of the wheel and in turn parallel to it. In this way, the edge chains in the links connecting points in the vertical plane bend easily along the drive and running wheels. A disadvantage of this design, however, is the equally good flexibility of the edge chains even in the horizontal plane at the chain links. Of course, this causes a particular disadvantage in such belt chain vehicles, where the vehicle is controlled by different Large speeds of the belts or even with different driving directions of the belt chains. In this case, the known belt chain structures do not resist the lateral forces exerted at the turns of the vehicle, but the chains can bend and shift in the lateral direction and may thereby fall away from the wheels. However, according to the invention, the lateral stiffness of the belt chain can be substantially improved without impairing the flexibility in the vertical plane which is required to control the belt chain over the wheels belonging to the structure.

This is accomplished in accordance with the invention by attaching the side chains to the cross blocks, such that when the strap chains are mounted on the wheels, the chain plane of the chains forms an approximately 45 degree angle with the axles of the wheels. Where the chains are stretched over all the wheels, the joints between the chains of the chains are lasered against a bend in the axle direction of the wheels or against bending in the horizontal plane. The chains thereby form, in the horizontal plane, stiff, rigid members, which of course prevents horizontal movements of the belt chains and thus also their deviation from the wheels belonging to the belt chain system.

The invention is described in more detail with the aid of the accompanying drawing, in which Fig. 1 shows a schematic view of the cross block and Fig. 2 the chain seen from above.

3 60169

The transverse pads 9 are preferably bent and adapted to the concave wear surface of the wheels, as shown in Fig. 1. They are preferably provided with projections or projections 9a to increase friction. For the attachment of the chain to the ends of the blocks, the latter may be designed so that the links 8 fit into recesses 9b and 8b, respectively. 9c in the block 9. In the example shown, there is a block between each link pair and the links form a 45 degree angle with the horizontal or vertical plane, but are turned with different hobs. When the links are fitted into the various recesses 9b and 9c, they are welded. It is also possible to attach blocks 9 only to each other link and there the ends of the blocks may be uniform. Essential to the invention is in any case the position of the link plane in relation to the vertical or horizontal plane. The chains are similarly flexible, but fixed against lateral displacement.