| 摘要 |
982,815. Endless conveyers. MINING ENGINEERING CO. Ltd. Jan. 30, 1964 [Feb. 16, 1963], No. 6377/63. Heading B8A. To retard a loaded conveyer belt travelling downhill at a substantial angle, one or more trays 21 are mounted on stringers 11 which support self-troughing roller assemblies 10. Each tray consists of two oppositely inclined plates 22 welded to two bars 23 having U- shaped members 24 which embrace the stringers 11. When the belt is unloaded it is supported by the roller assemblies 10 just clear of the trays, but when the belt is loaded the troughing angle of the assemblies 10 increases and the underside of the belt comes into contact with the tray. Specification 872,266 is referred to. |
