Patent GB-745299-A (GB)
Title: Improvements in and relating to two-axled rail vehicles
IPC: B61F5/32
Filed: 1953-04-15
Abstract: 745,299. Undercarriage details of railway vehicles. MASCHINEN FABRIK AUGSBURGNURN BERG AKT. - GES. April 15 1953 [April 15, 1952; Aug. 30 1952], No. 10324/53. Class 103 (6) A rail vehicle has two pairs of wheels on two axles, each pair independently guided by a radial bogie provided with means for re turning the bogie to normal posi tion after rounding a curve and for damping lateral movement of the wheels during travel on the straight stretches, and the vehicle body is supported through spring- ing means, which absorbs only vertically-directed forces, at two points on each of-the two radial bogies, two of the four points of support being connected to. gether by a compensating device. In the arrangement shown in Figs. 1, 2, 3 and 6 the car body 12 is supported at each end on a radial bogie consisting of an axle 1 with wheels 2, a tubular axle easing 3 over which is fitted a bolster 5, a radius bar 7 and springs 8, 10, 11. The radius bar is connected to the car body by means of a universal joint 13, 14. The axle casing has brackets 18 supporting rockers 6 on which the bolster 5 is supported. The bolster is connected at the ends to leaf springs 8 which support coil springs 10 and rubber thrust springs 11. The axle easing 3 has a hydraulic-pneumatic device in a casing 29 which acts to return the bogie to its central position after it has been deflected due to the vehicle rounding a curve and also acts to damp the swing of the radial bogie. The bolster 5 is connected by a link 20 to a bearing block 21 on the car body and is connected by a link 19 to the radius bar 7 so that no relative movement in a horizontal plane takes place between the bogie and the car body and therefore there is no horizontal force acting on the springs 8, 10, 11. Two springs 11 on one bogie support the car body independently, but two springs 11 on the other bogie are interconnected by a leaf spring 22, Fig. 6, which is pivotally mounted in a bearing block 12b of the car body. In a modification shown in Fig. 7, the car body is supported on one longitudinal side of the vehicle on two springs 11 one on each bogie, and on the other longitudinal side a bearing block 12c is provided at each end of the vehicle, the bearing block carrying a pivotally mounted bell-crank lever. One arm 25 of the lever is supported by a spring 11 and the other arm 26 is connected by a tension rod 27a to the corresponding arm of a bellcrank lever similarly mounted at the other end of the vehicle. In the arrangement shown in Fig. 11, a bolster 47 at one end of a radial bogie has a cup 60 to receive a member 61 which is secured to one arm of a lever 62 rotatably mounted on a bearing block 63 on the car body 50. The other arm of the lever is connected by a tension strip 66 to one arm of a bell-crank lever 65 pivoting on a pin 64 on the car body. The other arm is connected by a tension rod 67 leading to similar lever mechanism associated with the other radial bogie. At the other longitudinal side of the vehicle the members 61 are connected directly to the car body 50. In the arrangement shown in Figs. 13 and 14, each radial bogie has a radial frame 85 and springs consisting of a white spring 93 and a rubber thrust spring 94. A shock absorber 95 is arranged between the frame 85 and the axle bearing 83. The casing of each axle bearing 83 is connected by a link 84 to a bearing block 85a of the normal frame 85 to prevent horizontal relative movement between the axle and the radial frame. The frame is pivoted by a universal joint 88, 89 to a bearing block 90 of the car body 91 which is supported on rollers 97 carried by the radial frame. Swing of the radial bogie is damped by a device 87 which has pressure plungers 87a for engagement with plates on brackets 91a of the car body 91. The rollers 97 of a bogie are arranged with their axes in line'with the axis of rotation of the joint 89. On one of the two bogies the two rollers independently support the car body, but on the other bogie the rollers are each carried by a bellcrank lever 101, Fig. 19, rockably mounted on the car body 91. The two bell-crank levers are connected together by a cable 102 with guiding pulleys 103. In an alternative arrangement shown in Fig. 17 the car body is supported on the radial frame of each bogie by spring rockers 98. For one bogie the two rockers act on levers 101a which are connected together by a cable 102a. In a further arrangement wedge members are arranged between the car body and the radial bogies, rollers lying between the wedge surfaces. The lower wedge members of one bogie are connected together by a cable.