Axial positioning mechanism for anti-rolling strut-and-tie joint bearing

Abstract

The invention discloses an axial positioning mechanism for an anti-rolling strut-and-tie joint bearing. The axial positioning mechanism comprises a bowl body, a bearing and a mandrel which are mountedin a matched manner; a circle of groove I is formed in the position, located on the upper edge of the bearing, of the inner arc surface of the bowl body; a split check ring for pressing the bearing is mounted in the groove I; the upper side surface of the groove I is an inclined surface; one side, close to the mandrel, of the groove I is the big end; the upper end surface of the split check ringis also an inclined surface; the inclination angel b of the inclined surface of the split check ring is equal to or slightly larger than the inclination angle a of the inclined surface of the groove I; the small end of the split check ring is smaller than the big end of the groove I; the big end of the split check ring is larger than the big end of the groove I; a groove II is formed in the innerarc surface of the split check ring; a radial elastic piece is embedded in the groove II; and the split check ring is pressed in the groove I by the radial elastic piece towards the outer diameter. Bythe aid of the axial positioning mechanism for the anti-rolling strut-and-tie joint bearing, mounting and working plays of the anti-rolling strut-and-tie joint bearing can be eliminated, and the mechanism is convenient, quick, safe and reliable to use.

Description

technical field [0001] The invention relates to a rail transit vehicle component, in particular to an axial positioning mechanism for an anti-side roll tension bar joint bearing. Background technique [0002] In the structure of the tension and compression rod parts of the anti-rolling device of the rail transit engineering vehicle, a joint bearing structure is designed to be installed so that the anti-rolling device can effectively withstand various alternating forces generated by the load during the running of the vehicle, avoiding the rollover effect. [0003] At present, in the domestic machinery manufacturing industry, there are two structural forms commonly used for axial positioning of mounting bearings: spring retaining rings and spacers. When all enterprises install the bearing shaft, no matter what method they adopt, there will be installation and working clearance, but the clearance is different. The national standard GB / T9161-2001 and the aviation standard HB 0-...

AI Technical Summary

Problems solved by technology

Because of this gap, the spring retaining ring cannot be close to the end face of the bearing outer ring, and the axial movement of the bearing will occur during operation.

[0005] The principle of the axial positioning of the spacer in the installation of the bearing is: use one end of the spacer to withstand the end face of the bearing outer ring, and the other end of the spacer is tightly pressed by the end cover and then the end cover is tightened, so that Although assembly can avoid the generation of installation clearance, it cannot eliminate the working clearance of bearings caused by wear between parts as the workpiece runs

[0006] In a large number of tests on the trial production of anti-rolling compression rods, it was found that the use of standard spring retaining rings cannot resist the impact force of the joint bearing in the axial direction, let alone eliminate the installation and working clearance of the joint bearing; The way of positioning, one is that the working clearance of the joint bearing cannot be eliminated, and the other is that a large amount of grease is injected into the cavity of the joint bearing installed by the tension and pressure rod, and the sealing effect of the end cover will be unsatisfactory, resulting in grease leakage

Therefore, neither of the two positioning methods can meet the requirements for installing the joint bearings of the tension and compression rods.

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