Knuckle bearing starting torque measurement device and measurement method

Abstract

The invention provides a measurement method of a knuckle bearing starting torque measurement device and belongs to the technical field of mechanical measurement. The knuckle bearing starting torque measurement device is characterized in that an inner ring connection tool, an upper loading applying tool and a lower loading applying tool are included, and the upper loading applying tool and the lower loading applying tool are identical in structure; a knuckle bearing A is installed in a structure of the upper loading applying tool, then a knuckle bearing B is installed in a structure of the lower loading applying tool, the upper end of the inner ring connection tool is fixed to the upper loading applying tool through the knuckling bearing A, and the lower end of the inner ring connection tool is fixed to the lower loading applying tool through the knuckling bearing B. By means of the measurement method, the problem that when the knuckle bearings bear certain outer loads, an inner ring and an outer ring rotate relatively and a starting torque is difficult to measure is solved, the measurement method can also be used for measuring the starting torque when a metal roller bearing and a sliding bearing rotate relatively under the action of outer loads, the measurement method is easy and convenient to operate and needed equipment conditions are simple.

Description

technical field [0001] The invention belongs to the technical field of mechanical measurement and relates to an improvement of a method for measuring starting torque of a joint bearing. Background technique [0002] Joint bearings are composed of an inner ring and an outer ring, figure 1 shown. Generally, it bears radial load or axial load or the combined load of both loads. In the design of joint bearings, there is generally a requirement that the no-load starting torque is not greater than a specified value. Correspondingly, during the factory inspection of the joint bearing, it is necessary to measure the no-load starting torque. The measurement method used is usually to fix the inner ring (outer ring), and measure the momentary force or moment of the outer ring (inner ring) relative to the inner ring (outer ring) by hanging a counterweight or other means without applying a working load. , figure 2 shown. However, spherical plain bearings rarely have no load in act...

AI Technical Summary

Problems solved by technology

[0003] Obviously, at present, only the no-load starting torque measurement is carried out for joint bearings, which cannot meet the actual needs

The currently used no-load starting torque measurement method cannot be used for spherical plain bearings under operating loads

Under a certain radial load ( image 3 shown) or axial load ( Figure 4 As shown), since there must be tooling to apply radial load or axial load to the inner and outer rings of the spherical plain bearing, the force or moment change at the moment when the outer ring (inner ring) of the spherical plain bearing rotates relative to the inner ring (outer ring) is measured tougher

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