| 摘要 |
PURPOSE: To reduce noise by providing individually replaceable teeth structures formed by supporting a driving member (tooth) through an elastic pad in a space between a pair of circular flanges of a housing having a pair of circular flanges spaced from each other. CONSTITUTION: An elastic driving sprocket assembly 14 used in a crawler type tractor includes a fitting part 24, a circular hub part 26, and a housing 22 having a first and a second circular flanges 28, 30 which are spaced from each other and elongated in the radial direction, and each flange 28, 30 is provided with through holes 34, 36; 38, 40 formed in a line. A plurality of individually replaceable elastic driving teeth structures 42 are disposed in a space between the flanges 28, 30, and each tooth structure 42 is held by retaining pins 44, both ends of which are fitted to in the through holes 34-40. Each tooth structure 42 is formed by a metallic driving member (tooth) 46, first and second elastic pads 48, 50 and first and second metallic retaining members 52, 54.
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