| 摘要 |
908,520. Mine shuttle cars. JOY MANUFACTURING CO. May 20, 1959 [June 9, 1958], No. 17098/59. Addition to 894,065. Class 78 (4). [Also in Group XXXII] The mine haulage vehicle claimed in the parent Specification is modified by the provision of means, associated with the vehicle wheels suspension device and operable by remote control, for elevating and lowering the end portion of the vehicle body relative to the wheels at at least one end of the vehicle. As shown in Fig. 3, the steering-wheels 9 at each end of the vehicle are supported on links 17, 18, which are pivotally mounted at 24, 22 respectively, on the body 1. Arms 33 integral with links 17, are connected by a roller chain 31, and a doubleacting hydraulic ram 36, 37, slidable in guides 34 and forming a link of the chain 31, is provided, which, on extension under the action of control means 41, Fig. 2, lowers the body section 1 with respect to the wheels 9. In a modification, Fig. 6 (not shown), the hydraulic ram 36, 37 is replaced by a pair of rams pivoted between the links 18 and links pivoted to the body. In further modifications, Figs. 9, 12 (not shown), hydraulic rams are pivoted between a transverse axle, pivoted to the body, and wheel supports, pivoted to the axle. The vehicle is also provided with wheels 10 driven by motors 11. |
