Large radial load cylindrical roller bearing friction torque testing machine

Abstract

The invention belongs to testing machine equipment, and particularly relates to a large-radial-load cylindrical roller bearing friction torque testing machine which comprises a rack, a spindle box, a horizontally-arranged mandrel, a balance beam and a supporting seat, the supporting seat and the spindle box are installed on the rack, and the two ends of the mandrel are rotationally installed on the supporting seat and the spindle box respectively. A measured bearing is sleeved on the mandrel, the balance beam is sleeved on the measured bearing, the balance beam is provided with a force measuring rod, the force measuring rod is connected with a tension sensor, two sides of the balance beam are respectively provided with a lifting point, a connecting line of centers of the lifting points penetrates through an axial lead of the mandrel, and weights for loading are symmetrically lifted on the lifting points. The measuring precision of the testing machine is greatly improved.

Description

technical field [0001] The invention belongs to testing machine equipment, in particular to a large radial load cylindrical roller bearing friction torque testing machine. Background technique [0002] Bearing friction torque is one of the important parameters of bearing performance. Bearing friction torque directly affects the running resistance and energy loss of the bearing during use. Excessive friction torque will not only cause the bearing to heat up too quickly, accelerate the deterioration of lubricants, but also The wear of the bearing surface is aggravated and the service life of the bearing is affected. [0003] Because cylindrical roller bearings can only bear radial loads, radial loads are required to measure their friction torque performance. At present, the measurement structure of the friction torque testing machine for cylindrical roller bearings is to install the inner ring of the bearing to be tested on the mandrel. Both ends of the rope are connected wi...

AI Technical Summary

Problems solved by technology

Since the force transmission rope will bend and deform and relatively slip during the rotation of the measuring ring, the friction torque of the bearing to be tested needs to overcome the bending deformation of the force transmission rope and the friction between the force transmission rope and the measuring ring to be transmitted. to the force rod, causing measurement errors

Especially when a large radial load is applied, the diameter and stiffness of the force transmission rope that needs to be used will also increase, and the friction between the force transmission rope and the measuring ring will also increase, and the resulting measurement error will also increase. Big

[0004] At present, the measurement accuracy of cylindrical roller friction torque testing machine is not high under the condition of large radial load, it is difficult to truly reflect the friction torque of cylindrical roller bearings under large load conditions, and it cannot meet the needs of dynamic friction torque monitoring for bearings

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