Tensioning device and method for preloading bearings

Abstract

The invention relates to a tensioning device (100) for pretensioning a bearing (102). The tensioning device (100) includes a bearing (102) comprising a first bearing ring (106) and a second bearing ring (108). Here, the bearing (102) is arranged to transmit a preload in the radial and / or axial direction between the first bearing ring (106) and the second bearing ring (108). The tensioning device (100) also includes a member (110) connected to the first bearing ring (106). In addition, the tensioning device (100) comprises a support member (101) for supporting said part (110) against the second bearing ring (108) such that starting from the first bearing ring (106) via the part (110) and the support A closed force transmission path from the component (101) to the second bearing ring (108) is formed. The tensioning device (100) also includes a sleeve (112) disposed axially displaceable between the first bearing ring (106) and the component (110). The sleeve (112) is arranged to cause a change in preload in case of axial displacement relative to the part (110).

Description

technical field [0001] Exemplary embodiments of the invention relate to the field of tensioning devices for pretensioned bearings. Background technique [0002] Bearings are used in many technical fields and have different shapes depending on the field of application. For example, there are: an axial bearing capable of preventing axial movement of a component to be rotatably supported; a radial bearing capable of preventing movement of a component in a radial direction; or a bearing capable of accommodating combined loads. The latter can be mounted in pairs or groups with other bearings of the same type on a common shaft, for example to reduce or even prevent shaft play. For this purpose, pretensioning measures can be taken, by means of which the play is already reduced as much as possible in the stationary state of the application. However, many applications have only very limited possibilities of preloading at an acceptable cost due to their size, since for example a bea...

AI Technical Summary

Problems solved by technology

However, many applications have only very limited possibilities of preloading at an acceptable cost due to their size, since for example a bearing and the shaft it supports may have a weight of several tons, which is obviously Increased difficulty of handling work

Furthermore, it is possible that the required accuracy cannot be achieved here, since in some cases even small temperature differences can lead to non-negligible thermal expansion of the bearing components, or because the weight of the bearing (e.g. more than one ton The weight of the bearing) may cause a settlement caused by the weight of the bearing or the shaft itself

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