Drafting shaft support bearing of spinning machine

Abstract

The invention provides a supporting bearing for a drawing shaft of a spinning machine, which comprises a bearing seat, an outer ring, an inner ring, needle rollers, steel balls, a steel ball retainer, a needle roller retainer and shield rings. The surface of the outer ring is provided with a circular-arc raceway and a straight raceway. The surface of the inner ring is provided with a circular-arc raceway and a straight raceway corresponding to those of the outer ring. A group of steel balls are arranged at the centers of the circular-arc raceways of the inner and outer rings and the steel balls separated at along the circumstantial direction by the steel ball retainer. A group of needle rollers are arranged at the centers of the straight raceways of the inner and outer rings and the needle rollers are separated by the needle roller retainer. Two shield rings which limit the needle rollers and the needle roller retainer to deflect axially are arranged at both sides of the straight raceways. The invention is designed of a set of combination bearing instead of two sets of bearings in the prior art, which avoids early invalidation during operation resulted from differences in different bearings. The invention meets the use requirements of high load for the bearing and simultaneously improves the lubrication of the bearing.

Description

1. Technical field [0001] The invention relates to a supporting bearing for a drafting shaft of a spinning machine, which is mainly used for the drafting support in the head box of the spinning machine in textile equipment. 2. Background technology [0002] The bearing installation structure on the existing textile equipment is as follows: figure 1 As shown, the configuration of the bearing is composed of two sets of deep groove ball bearings 2 separated by a bushing 3 at the inner ring of the bearing. Two sets of bearings are installed in the bearing seat 1, and the retaining ring 4 is used for axial positioning and bearing axial force. An oil hole 5 is arranged on the bearing seat. During maintenance, the grease is pumped into the space 6 through the oil hole 5 and then enters the bearing. [0003] The existing bearing configuration can meet the requirements under general light load conditions, but as the number of spindles of the spinning frame increases, the machine le...

AI Technical Summary

Problems solved by technology

Since the bearing seat 1 is full of lubricating grease, the lubricating grease is driven and stirred during work, which will generate a lot of heat, which will affect the lubrication effect, and it is easy to cause insufficient lubrication and greasing, which will cause the bearing to fail

[0006] 3. Due to the configuration of two sets of bearings, the size and runout consistency of the two sets of bearings are required to be very high, which is difficult to achieve in actual situations

The inconsistency of the bearing makes the bearing load uneven during work, which is also the cause of premature failure of the bearing

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