GB354147A - Improvements in and relating to railway vehicles with high speeds - Google Patents

Abstract

354,147. Axle-trucks. KRUCKENBERG, F. and STEDEFELD, C., 20, Georgsplatz, Hanover, Germany. Dec. 6, 1930, No. 36854. Convention date, Dec. 7, 1929. [Class 103 (vi).] In a high-speed railway vehicle of the kind in which the individual axles 11, Fig. 1, are normally connected to the vehicle frame 17 by a pair of parallel pivoted bars 12 so that the axle can partake only of a parallel or non-radiating displacement, means are provided whereby either the driver may positively set the axles in an inclined or radiating position, e.g. when desired to negotiate sharp curves at slow speed, or the axles may be arranged to radiate automatically. In the construction shown in Fig. 2, the latter object is attained by inserting in the bars 12 resilient elements such as springs 20, which may be rendered solid or pre-loaded to a desired degree by screwing up the gland 21. When so loaded the parts 18, 19 of the bars 12 function as a rigid element, such condition being suitable for running on a straight track; when the gland 21 is slackened off, radiation of the axles is permitted, the bar 12 on one side being lengthened and the bar on the opposite side being shortened. In another arrangement, Fig. 3, the bars 12 are connected to internally-threaded sleeves 22, 23, which are adjustable on a transverse spindle 24 controlled by the driver through bevel gear 25, so that the bars 12 can be disposed either in a normal parallel position or alternatively in an inclined position permitting radiation of the axle. In a further construction the bars 12 are connected to the ends of a swivelling lever, and the system of links so formed may either be locked or be rendered capable of swivelling as a whole by means of two additional links connectible selectively either to the vehicle frame or to the axle. In these last two constructions a centralizing force for the axles is needed, and such may be supplied by springs associated or not with a hydraulic dashpot for damping purposes. Such a combination is shown in Fig. 7, in which, in addition, the springs 39, 40 and the dashpots are so arranged that the driver, by admitting compressed air to one or other of the liquid chambers 42, 43, may positively effect an inclination of the axle. Between the chambers 42, 43 and the'corresponding piston cylinders 37, 38 are disposed valves 41, 44, which may either be partially throttled to adjust the damping effect or be completely closed to prevent radiations of the axle. According to a still further arrangement a positive inclination of the axle is effected by connecting the bars 12 to pivoted levers associated with a right- and left-handed screw-threaded spindle rotated by the driver.