| 摘要 |
965,976. Road rollers. RICHIER S.A. Aug. 8, 1962 [Aug. 17, 1961], No. 30318/62. Heading A1B. [Also in Division F2] A road roller cylinder to which unidirectional vibration, hydraulically adjustable in direction, is applied is rotatably mounted on a stub axle portion 1 of a casing 5 which resiliently supports the machine frame 6 by elastic pads (not shown) and encloses a means T driving the cylinder and a means V driving, at the same speed but in opposite directions, two unbalancing weights 8, 11 having equal mass x radius products and mounted coaxially within said stub axle portion. The means T comprises an electric or hydraulic motor and double reduction gearing. The means V comprises an electric or hydraulic motor connected to the weight 11 directly through a coupling 15 and connected to the weight 8 through a reversing train comprising gears 17, 18, a countershaft 19 and gears 20, 21, 22 and a coupling 14, the gear pairs 17, 18 and 22, 20 being of equal ration. The gear 18 is connected to the countershaft 19 by radial pegs secured in the gear 18 and engaging helical slots 25 in a piston member 24 splined on the countershaft. The member 24 is axially moved against a spring 27 by hydraulic pressure acting thereon through a line 30 to vary the relative initial circumferential setting of the countershaft 19 and gear 18, hence, the two unbalancing weights, thereby adjusting the direction of unidirectional vibration applied by the weights to the cylinder to vary the amount of the vertical component acting on the ground. |
