Online acquisition method and device for load of bearing and bearing service life estimating method and device

A technology of bearing load and acquisition method, which is applied in the field of bearings, can solve problems such as limitations and poor versatility, and achieve the effect of cost saving and strong versatility

Inactive Publication Date: 2018-03-27
SCHAEFFLER TECH AG & CO KG
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Problems solved by technology

[0003] The problem to be solved by the present invention is: the online acquisition method of the bearing load in

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  • Online acquisition method and device for load of bearing and bearing service life estimating method and device

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Embodiment Construction

[0037] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] In the bearing load online acquisition method of the bearing service system provided by the present invention, the bearing service system can be any device using a bearing. In this embodiment, the bearing service system takes a railway axle box as an example, and the axle box includes a rotating shaft, a bearing sleeved on the rotating shaft, and a bearing seat for installing the bearing. Combine below figure 1 The method for online acquisition of bearing load in this embodiment is introduced in detail.

[0039] First, step S10 is executed to establish a multi-body system (Multi-body System, MBS for short) model of the bearing service system.

[0040] The multi-body dynamics model is a simulation model of the bearing service syste...

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Abstract

The invention provides an online acquisition method and device for load of a bearing and a bearing service life estimating method and device. The acquisition method includes establishing a many-body dynamics model of a bearing service system; acquiring a transmission function and an inverse transmission function based on the many-body dynamics model; collecting response signals generated by the bearing service system under excitation of the load of the bearing during the operation process of the bearing service system; acquiring the load of the bearing based on the transmission function, the inverse transmission function and the response signals by adopting a virtual iteration method. According to the invention, the transmission function and the inverse transmission function of the bearingservice system and the response signals of the bearing service system that are easily collected can be utilized for virtual iteration, so that bearing online load that are not easy to measure can beobtained. Since the many-body dynamics model is adopted for simulating the real bearing service system, the universality is high and the bearing service system is not damaged. Besides, hardware utilization is low, so that the cost is saved.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to an online bearing load acquisition method of a bearing service system, an online bearing load acquisition device of a bearing service system, a bearing life evaluation method and a bearing life evaluation device. Background technique [0002] During the operation of the bearing service system, obtaining the load of the bearing in the bearing service system plays an important role. In the prior art, the load of the bearing is directly measured by pasting the strain gauge on the surface of the outer ring or the inner ring of the bearing, but in many cases, due to the influence of the installation environment of the bearing, it is difficult to paste the strain gauge on the bearing, resulting in the method no longer applies. Therefore, it is urgent to provide a more general method to obtain the bearing load of the bearing service system online. Contents of the invention [0003]...

Claims

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Application Information

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IPC IPC(8): G01M13/04
CPCG01M13/04
Inventor 朱路周新马子魁魏来邱志
Owner SCHAEFFLER TECH AG & CO KG
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