초록 ▼

In a crawler track comprising at least one guide wheel and caster wheels at a track carrier, at least one driving wheel for the track, and a guide wheel tensioning device including at least one tensioning member which acts on the guide wheel via a tensioning lever supported at the track carrier, the

In a crawler track comprising at least one guide wheel and caster wheels at a track carrier, at least one driving wheel for the track, and a guide wheel tensioning device including at least one tensioning member which acts on the guide wheel via a tensioning lever supported at the track carrier, the guide wheel is provided in a guide part which is exclusively linearly moveable and is laterally supported in the track carrier with a slide block arranged between the guide part and the tensioning lever, which slide block can slide crosswise and relatively to the linear direction of movement of the guide part while transmitting the tensioning force substantially parallel to the linear direction of movement of the guide part.

대표청구항 ▼

The invention claimed is: 1. Crawler track assembly, for a road finisher or road finisher-feeder vehicle equipped with a rubber crawler track, the crawler track assembly comprising: at least one guide wheel and caster wheels at a track carrier, at least one driving wheel for the rubber crawler trac

The invention claimed is: 1. Crawler track assembly, for a road finisher or road finisher-feeder vehicle equipped with a rubber crawler track, the crawler track assembly comprising: at least one guide wheel and caster wheels at a track carrier, at least one driving wheel for the rubber crawler track and a guide wheel tensioning device including at least one tensioning member which acts on the guide wheel via a tensioning lever which is pivotably supported at the track carrier, wherein the guide wheel is arranged at a guide part which is laterally supported and exclusively linearly moveable in the track carrier, and that a slide block is provided between the guide part and the tensioning lever, which slide block is arranged for a relative sliding movement crosswise to the direction of the linear movements of the guide part. 2. Crawler track assembly according to claim 1, wherein the slide block is pivotally linked to the tensioning lever at a pivot axis and slides at the guide part. 3. Crawler track assembly according to claim 1, wherein on both sides of the guide part as tensioning members, a respective hydraulic tensioning cylinder and a respective tensioning lever are provided, and that both tensioning levers are coupled by a common pivot axis on which the slide block is pivotally supported. 4. Crawler track assembly as in claim 1, wherein the track carrier is a solid steel sheet plate which is arranged upright and which has a cut-out linear guiding jaw for the guide part. 5. Crawler track assembly according to claim 4, wherein the steel sheet plate has a free space at least for accommodating the slide block and a pivot axis, and that the tensioning lever, the at least one tensioning member and the caster wheels or rocker bearings for the caster bearings, respectively, are mounted at the steel sheet plate. 6. Crawler track assembly according to claim 4, wherein in or on at least one side of the steel sheet plate, a guiding plate is removably mounted which at least partially covers the guide part in the linear guiding jaw and which supports the guide part laterally, or that guiding plates are mounted at both sides of the steel sheet plate. 7. Crawler track according to claim 1, wherein the guide part having a slot for the engagement of the slide block, that openings are defined by slots situated in the side cheeks and extending substantially crosswise to the direction of the linear movements of the guide part, and that guiding pins are provided on the slide block, two guiding pins lying upon each other in one side or in both sides of the slide block. 8. Crawler track according to claim 1, wherein one of the caster wheels, which is a first caster wheel next to the guide wheel, is arranged at the track carrier below the tensioning member adjacent to the tensioning lever, at a rocker bearing mounted below the tensioning member. 9. Crawler track according to claim 1, wherein a pivot axis for the slide block is arranged at the tensioning lever approximately in the middle between a tensioning member bearing and a track carrier pivot bearing of the tensioning lever, offset in relation to a connecting line between both bearings. 10. Crawler track according to claim 9, wherein the tensioning member bearing is defined by two bearing blocks at the tensioning lever, a lateral linking pin penetrating both bearing blocks, and a universal joint on the linking pin for a lug of a piston rod of the tensioning member. 11. Crawler track according to claim 1, wherein the positions of a pivot axis at the tensioning lever, of a track carrier pivot bearing and the tensioning member at the track carrier are matched such with the positions of the guide part and a flat counter surface of the guide part abutting at a front surface of the slide block that the direction of tensioning forces transmitted from the pivot axis via the slide block to the guide part is at least substantially parallel to the linear direction of movements of the guide part.