Patent GB-413339-A (GB)
Title: Improvements in axle bearings for rail vehicles
IPC: B61F17/20
Filed: 1932-12-12
Abstract: 413,339. Lubricating axle-bearings. MALCHER, B., 1, Gitschinerstrasse, Berlin. Dec. 12, 1932, No. 35247. Convention date, Dec. 11, 1931. [Classes 12 (i), 12 (ii), and 12 (iii).] In an axle-bearing for rail vehicles in which the axle member has several bearing surfaces formed on a bearing member or members 9, these surfaces being separated by wedgeshaped oil-entrance spaces 9<1>11, 9<2>1, 9<2>11, 9<3>1 &c., oil store spaces 11<1>, 11<2>, 11<3> &c. recessed in the axle member between the wedge-shaped oil-entrance spaces are periodically connected with the lubricant supply 19 by recesses or bores such as the bore 20 formed in unloaded parts of a bearing shell 10. A single bearing member 9, Fig. 1, having several parts 91, 9<2>, 9<3> &c. may be cast round a steel sleeve 4 by means of dovetail recesses 8, or several bearing members may be cast on the sleeve 4. The latter is shrunk on to the journal 1 and retained axially by a collar bolted to the journal. Lubricant in the well or supply 19 is sucked up through the bore 20 in the bearing shell 10 into the oil storage spaces and the wedge-shaped oil-entrance spaces by the rotation of the journal. In all forms, the bearing shell 10 is constructed in two parts 101, 10<2>, Fig. 3, divided by a central transverse plane. These parts have rounded portions fitting corresponding recesses in the axle box 13 to prevent their axial displacement. The axle box also is constructed in two parts, but divided in a horizontal plane and fitted with clamping bolts 14 and aligning pins 15, Fig. 1. The bearing shell 10 which is thus adjustable in the axle box 13 may be prevented from rotating by tangential cotters. The parts 10<1>, 10<2> have end collars 10<1>11, 10<1>11, Fig. 3, to prevent axial displacement of the axle member 1, 4, 9. These collars, in the form according to Fig. 1, may be reduced at their lowest points to the same diameter as the bore of the shell 10 so as to provide additional entry spaces for lubricant. Opposite the joint 10<3> the bearing member 9 is provided with an annular channel 18. The ends of the sleeve 4 are reduced conically, the reduction at the rear end restricting the lubricant flow to the intermediate race 2. The latter is provided with a spraying ring 38, a labyrinth packing 16 and two dust packings 17. In addition to the supply of lubricant through the bore 20 and the gaps formed in the collars 10<1>11, 10<2>11, lubricant may be raised by a disc 22, Fig. 3, bolted to the collar 7 and having a curved annular lip. Lubricant accumulating in this lip by centrifugal force is caught by a scoop 23 and conducted by way of a crescentshaped channel 24, a passage 26, and longitudinal channels 25 to the storage spaces in the bearing member 9. In another modification, Fig. 5, a member 27 throws lubricant on to the axle box whence it drips on to a catch-shield 28 on the cover, and is guided into a spout 31 by channels 30 arranged laterally on the box. The spout supplies a trough 32 on the collar 7, and lubricant accumulating around this trough by centrifugal force is forced through passages 34 and an annular passage 35 in the collar 7 into a series of bores 33 in the sleeve 4. From these bores, passages 37 substantially tangential to both directions of rotation lead to the oil storage spaces. The ends of the member or members 9 may also be provided with wedgeshaped oil-entrance spaces 45 to lubricate the end thrust surfaces. An auxiliary lubricant receptacle working on the " bird-fountain " principle is provided on a shelf in the front of the box.