Bearing for ultralow-temperature liquid pump

A liquid pump and ultra-low temperature technology, which is applied in the field of liquid pump bearings, can solve the problems of unsatisfactory bearing work and long-term work of the bearing, and achieve the effects of low friction loss, no loss of precision, and extended bearing life

CN102797747AInactive Publication Date: 2012-11-28AVIC HARBIN BEARING
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2012-11-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a bearing for an ultralow-temperature liquid pump, and relates to a bearing for a liquid pump, and the bearing is used for solving the problems of an existing bearing for ultralow-temperature liquid pump that the bearing fails to run smoothly under a running condition with ultralow temperature and high speed because of no retainer, and the bearing cannot run for a long time without being lubricated. According to the bearing for the ultralow-temperature liquid pump, two annular retaining frames have the same width; annular chambers are formed at two ends between an external ring and an internal ring, with each one comprising a circular retaining frame inside; a plurality of bucket holes are arranged at the positions the circular retaining frame corresponding to a plurality of spherical rolling bodies; a plurality of nail holes are uniformly distributed on the annular retaining frame along the circumference; tubular rivets are arranged in every correspondingly arranged nail holes on the two annular retaining frames, and two ends of the tubular rivets are arranged on the external end surfaces of corresponding annular retaining frames by flanging; the two annular retaining frames are connected through a plurality of tubular rivets; and the width of the external ring is less than the sum of the width of the two annular retaining frames. The bearing is applied to the ultralow-temperature liquid pump.
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Description

technical field

[0001] The invention relates to a liquid pump bearing and belongs to the field of bearing structure design. Background technique

[0002] The bearing of the ultra-low temperature liquid pump works in the environment of -160 ℃, without lubrication during operation, the speed is relatively high (3400r / min) close to the limit speed, and the load is half of the rated load. Under the condition of high-speed operation, the bearing needs a cage to guide the rolling elements in order to work smoothly. The bearing can work for a long time without lubrication, and the cage must have a self-lubricating function to avoid damage to the rolling elements. Based on the above two necessary conditions, the existing bearings can no longer meet the requirements for use. Contents of the invention

[0003] The purpose of the present invention is to provide a bearing for an ultra-low temperature liquid pump to solve the problem that the existing ultra-low temperature liquid pum...

Examples

specific Embodiment approach 1

[0009] Specific implementation mode one: combine Figure 1~Figure 3 Explain that the ultra-low temperature liquid pump bearing of this embodiment includes an outer ring 1, an inner ring 2 and a plurality of spherical rolling elements 3, the outer ring 1 is set on the inner ring 2 and the two are arranged concentrically, and the inner ring of the outer ring 1 A plurality of spherical dimples 4 are evenly distributed on the circumference where the circumferential surface is located in the middle and the outer circumference of the inner ring 2 is located in the middle. A plurality of spherical dimples 4 on the outer circumferential surface of the inner ring 2 are provided in one-to-one correspondence, and a spherical rolling body 3 is arranged in each corresponding spherical dimple 4, and the width of the outer ring 1 and the inner ring 2 is equal. The bearing also includes two annular cages 5 and a plurality of tubular rivets 6. The widths of the two annular cages 5 are equal, a...

specific Embodiment approach 2

[0011] Specific implementation mode two: combination figure 1 To illustrate, the tubular rivet 6 of this embodiment is a stainless steel hollow rivet in a soft state. The undisclosed technical features in this embodiment are the same as those in the first embodiment.

specific Embodiment approach 3

[0012] Specific implementation mode three: combination figure 1 Note that the sum of the widths of the two annular cages 5 in this embodiment is 43-4 mm. The undisclosed technical features in this embodiment are the same as those in the first or second specific embodiment.