DE548515C - Rolling bearings for the wheel sets of rail vehicles, especially conveyors - Google Patents

Description

GERMAN EMPIRE

ISSUED ON APRIL 15, 1932

REICH PATENT OFFICE

PATENT LETTERING

CLASS 2Od GROUP

Addition to additional patent 507

The main patent 507 430 from January 4, 1929 is a roller bearing for the wheelsets of Rail vehicles described, which consists of a transverse bearing and one with balls or S rollers provided with longitudinal bearings. which the axial shocks from the impeller be transferred to the inner part of a resilient washer by means of a thrust sleeve. Since the bearing is set up for oil lubrication, the same is laterally supported by a Sealing washer reaching up to the axis of the bearing is sealed oil-tight. The one for this The required axial pressure is applied to the sealing washer by an in the axial direction exerted bent resilient expansion ring, which is provided with radially projecting lugs, which are in slots of the bearing housing intervention. This device is because of the insertion slots to be made in the bearing neck relatively expensive for the noses of the Spreizrihges and has certain disadvantages with regard to the insertion and the Removal of the expanding rings.

The object of the invention is therefore to improve this holding device therein consisting that the resilient expansion ring, which is bent in the axial direction, is now is ring-shaped and has short, inwardly directed hooks at the opening point, which serve to contract it. Corresponding annular grooves are made in the bearing housing, which the Corresponding to the cross-sectional shape of the expansion ring, but are wider in the axial direction than the insert ring. For easier removal and insertion into its storage the ring is oval or slightly flattened at the side. The axial deflection is designed in such a way that that the expansion ring on the one hand only with its sections lying on the largest diameter against one edge the ring groove of the housing and on the other hand with the closest to the smallest diameter lying sections outside of the annular groove against the in the axial direction to be pressed Washer of the bearing lays.

The new device has the advantage that the bearing sleeve does not have any through-holes possesses more and the new ring, which cannot come off by itself, in the simplest way Way can be inserted and removed from the same. After removal is then according to the main patent, the roller bearing easily dismantled into its components.

The subject matter of the invention is based on

lying drawing illustrated in several exemplary embodiments), namely demonstrate:

Fig. Ι (upper and lower half) two different Embodiments of a rolling bearing, provided with the new expansion ring,

Fig. 2 another embodiment of the rolling bearing according to Fig. I,

Fig. 3 the new expansion ring in plan view ίο and cross section.

As can be seen, the impeller b is attached to the axis α in the usual way. The bearing housing c is bulged downwards and here forms an oil sump. In the bearing housing c , the outer race d is inserted, which serves to accommodate eier rollers e. The inner race / is located on the offset axis a at the end.

According to Fig. 1 (upper half) the outer race ring d also serves as a running disk for the longitudinal bearing, whose balls or rollers g as well as the rollers e of the roller bearing are held in a cage of a known type. The second raceway of the longitudinal bearing is formed by the resilient ring disk h , which is also made of hardened steel and against which the pressure sleeve ι rests, which on the other hand protrudes into the hub of the impeller b. The sealing disk k, which here consists of three sheet metal plates, of which the two outer ones extend right up to the joint sleeve i , while the middle disk k has a larger opening, serves to seal off the oil sump from the outside in an oil-tight manner. The cavity k ' created in this way is filled with sealing material of a known type. The sealing washers k are pressed onto the sealing surface of the bearing neck by the expanding ring 0. The expansion ring ο is supported against the front surface of an annular groove 0 'screwed into the bearing neck.

According to Fig. 3, the new expansion ring 0 is oval or bent slightly flattened on the side so that it can be more easily pulled out of the annular groove 0 ' or inserted into the same. At the opening point of the ring there are inwardly curved hooks 0 ″, which make it easier to bend the ring together. The cross-section of the ring is square in the figure. It can, however, also be round or oval or have any other suitable cross-sectional shape.

According to Fig. 2, the bearing housing c is closed off by a sealing washer k designed as a resilient ring, which, in a manner similar to Fig. 1 (upper half), can consist of three resilient sheet metal washers that accommodate a seal k ' in a recess. The sealing disk k serves here at the same time as a running disk for the ball or roller bearing, which is arranged here close to the axis with the smallest possible diameter. The counter thrust washer h of the bearing g is in direct contact with the hub of the impeller &. The sealing washer is pressed c k here in the same manner as in the device according to Fig. 1 (upper half) by the expansion ring 0 against the bearing of the bearing sleeve. In this case, the oil lubrication only acts on the transverse bearing, but not at the same time on the longitudinal bearing, which is laterally open and is sufficiently lubricated by the coal dust present in the coal mines.

Another embodiment of the new roller bearing is shown in the lower half of Fig. Compared to the embodiment according to Fig. 2, the longitudinal bearing g is also sealed to the outside here and is lubricated in any way. The axial pressure of the expansion ring 0 acts here against double sleeves r and r ', of which the inner sleeve r presses against the outer edge of the sealing washer k , which also serves as a raceway ring, while the outer sleeve / itself is in turn supported against the sleeve r , the Inner space s between the sleeves r and r 'is again filled with a sealing material of a suitable type. All embodiments of the roller bearing is common that the same constituent parts are held by the axial pressure of the 3 expansion ring 0 formed in accordance with Fig. Necessarily in place, wherein after removal of the expanding ring 0 and to simultaneous removal of the impeller the bearing b in its individual components can be disassembled.

Claims (3)

Patent claims: i. Rolling bearings for the wheel sets of rail vehicles, especially trolleys, with a lock washer according to Patent 507 430, which is used to secure the dust protection disk, characterized in that the "■ <> known, axially deflected, resilient expansion ring (0) with its ring winding directly into an annular groove ( </) of the bearing housing (c) engages, one side wall of which is the fixed abutment of the ring in the axial direction ¹ ". 2. Rolling bearing according to claim 1, characterized in that the expanding ring is oval or is bent laterally flattened, with the expansion ring only with its on the largest diameter lying section ten engages in the annular groove (o ') of the housing and presses against the sealing washer (k) with the sections near the smallest diameter outside the annular groove. 3. Rolling bearing according to claim 1 and 2, characterized in that the ends of the expansion ring (0) are bent inwards like a hook to facilitate installation and removal. 1 sheet of drawings