| 摘要 |
1352572 Filter press plate spreading system KURITA MACHINERY MFG CO Ltd 19 April 1971 [27 March 1970 (2) 4 April 1970] 25587/71 Heading BID [Also in Division F2] The drive for a filter press, Figs. 1 and 2 (not shown) includes a gear train in which the reaction member is held for drive by a brake arrangement acting on the side of-the reaction gearwheel 5 or, as shown, acting on a gearwheel 11 fast with wheel 5, and allowing interruption of drive on overload. As shown, the side wheels 1, 5 of a bevel planet differential are respectively driven by a reversible electric motor through a worm 2, and held against rotation by a brake, the wheels meshing planet pinions 8 carried on the output shaft 7. The brake includes a worm, and rack, 12 acting on the wheel 11 and biased by a coil spring 10, or a pneumatic or hydraulic ram, to a central position from which it is displaced axially on overload against the spring bias so that trips 29, 30 on the worm abut switches 31, 32 to stop the motor. A timing arrangement (not further described), starts the motor in reverse after a predetermined time moving the worm back to its centre position. The gearing drives through a chain (34) and carriers (26) thereon to successively shift filter plates (28) between a fixed end plate (36) and a movable end plate (53) after filtration to allow removal of the cake. Again, Fig. 7, (not shown), the gear comprises an internal ring gear (108) on the output shaft and an internal ring gear (113) forming the reaction member, the ring gears meshing double planets (110), (114) on a carrier (109) driven by an input gearwheel (112). Again, Fig. 10 (not shown), the brake acts on the gear housing (204) on which the second ring gear (216) is mounted, drive to the carrier (209) being from the input shaft through an idler on the housing. Again, Fig. 14 (not shown), a worm (303) on the input shaft meshes directly a worm wheel (304) on the output shaft, the brake acting on the input shaft to resist axial movement thereof on overload. |
