| 摘要 |
A method for measuring the slack of chain on a tracked vehicle. On the upper strand (2) of the chain, three extension elements (3.1, 3.2, 3.3) of predetermined length are fixed running vertically from the upper strand downwards in such a way that a first and a second extension element (3.1, 3.2) are arranged, one at the starting point and the other at the end point, of a predetermined segment (L) of the upper strand (2), while a third extension element (3.3) is arranged at the middle (M) of the predetermined segment (L). On the first and second extension elements (3.1, 3.2), the ends of a cord (4) are fastened at a predetermined height below the upper strand (2) of the chain in such a way that said cord is stretched horizontally between the first and second extension elements (3.1, 3.2). By means of the third extension element (3.3), which carries a measuring scale (3.32), the vertical distance from the middle of the segment (L) of the upper strand (2) of the chain to the middle of the cord (4) is determined. The extension elements (3.1, 3.2, 3.3) can be shaped like rods which carry on one end thereof a fastening plate (3.11, 3.21, 3.31) formed as a permanent magnet.
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