Ultrahigh-temperature-resistant ball bearing

Abstract

The utility model discloses an ultra-high temperature resistant ball bearing which comprises a bearing outer ring, a bearing inner ring and a rolling body, and the bearing outer ring, the bearing inner ring and the rolling body are all made of carbon fiber reinforced ultra-high temperature ceramic matrix composite materials. And a retainer for isolating the rolling bodies is also arranged between the bearing outer ring and the bearing inner ring. And the rolling body is a spheroidal rolling body. By the adoption of the bearing, the technical problems that an existing bearing loses efficacy quickly due to insufficient lubrication in a high-temperature environment for a long time, and a bearing made of ceramic materials is low in fracture toughness and thermal shock resistance can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to an ultra-high temperature resistant ball bearing. Background Art

[0002] In industrial enterprises like steel and glass, transmission systems operating in high-temperature environments, such as continuous casting rollers, steel tapping machine rollers, rolling mill hearth rollers, and cooling beds, operate in temperatures exceeding 500°C (and sometimes even exceeding 1000°C) for extended periods of time. Consequently, these bearings cannot be effectively and reliably lubricated with grease. Consequently, these bearings often quickly fail due to severe wear, forcing frequent downtime for bearing replacement, resulting in unnecessary economic losses.

[0003] With the development of aerospace technology, bearings used in the inner components of future hypersonic vehicles will operate at temperatures approaching 1000°C. Existing high-temperature ceramic materials have low fracture toughness and thermal shock resistance, and are prone to fracture under alternating thermal stresses in temperature-swinging environments. Our product meets these requirements. Utility Model Content

[0004] The purpose of the utility model is to provide an ultra-high temperature resistant ball bearing, which can solve the technical problems of rapid failure of existing bearings due to high temperature and insufficient lubrication in a high temperature environment for a long time, and low fracture toughness and thermal shock resistance of bearings made of ceramic materials.

[0005] In order to achieve the above-mentioned purpose, the present utility model adopts the following technical solutions.

[0006] A super-high temperature resistant ball bearing comprises a bearing outer ring, a bearing inner ring and a rolling element, wherein the bearing outer ring, the bearing inner ring and the rolling element are all made of carbon fiber reinforced super-high temperature ceramic matrix composite material.

[0007] Furthermore, a retaining frame for isolating the rolling elements is provided between the bearing outer ring and the bearing inner ring.

[0008] Furthermore, the rolling body is a spherical rolling body.

[0009] After using the above technical solution, the utility model has the following beneficial effects:

[0010] 1. This utility model uses carbon fiber reinforced ultrahigh temperature ceramic composite materials to make the outer ring, inner ring, and rolling elements of the bearing, which greatly improves the bearing's strength, resistance to oxidation and ablation, as well as mechanical properties such as fracture toughness and impact resistance. This solves the problems of metal ceramic bearings being brittle and having poor thermal shock resistance in ultrahigh temperature environments, and can effectively improve the service life and operational reliability of bearings in ultrahigh temperature environments.

[0011] 2. The carbon fiber reinforced ultra-high temperature ceramic matrix composite material has the advantages that, relative to the metal ceramic material, the carbon fiber is light in weight, and can provide effective and reliable lubrication under a high temperature environment, reduces friction heat, and reduces bearing power consumption and abrasion. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a front view structural schematic diagram of the utility model.

[0013] Figure 2 is a rear view structural schematic diagram of the utility model.

[0014] Figure 3 is Figure 1 is a sectional view structural schematic diagram in A-A direction.

[0015] BRIEF DESCRIPTION OF DRAWINGS: 1, bearing outer ring, 2, bearing inner ring, 3, rolling body, 4, retainer. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following is in combination with the drawings and examples, and the features and performance of a kind of ultra-high temperature resistant ball bearing in the utility model are further described in detail.

[0017] Example One

[0018] An ultra-high temperature resistant ball bearing, comprising a bearing outer ring 1, a bearing inner ring 2 and a rolling body 3, the rolling body 3 is a spherical rolling body, and the bearing outer ring 1, the bearing inner ring 2 and the rolling body 3 are all made of a carbon fiber reinforced ultra-high temperature ceramic matrix composite material.

[0019] A retainer 4 for isolating the rolling body 3 is further arranged between the bearing outer ring 1 and the bearing inner ring 2. The retainer can be made of a commonly used material, and as a preferred embodiment, the retainer in the present embodiment is also made of a carbon fiber reinforced ultra-high temperature ceramic matrix composite material.

[0020] Since the bearing adopts the technical scheme of the carbon fiber reinforced ultra-high temperature ceramic matrix composite material, the strength, oxidation resistance and ablation resistance, fracture toughness and impact resistance and other mechanical properties of the bearing are greatly improved, the problems of brittleness and poor thermal shock resistance of the metal ceramic bearing in an ultra-high temperature use environment are solved, and the service life and operation reliability of the bearing in an ultra-high temperature environment are effectively improved.

[0021] Meanwhile, relative to the metal ceramic, the carbon fiber reinforced ultra-high temperature ceramic matrix composite material is light in weight, and can provide effective and reliable lubrication under a high temperature environment, reduce friction heat, and reduce bearing power consumption and abrasion.

[0022] Example Two

[0023] The technical solution in the present invention is not limited to one type of ball bearings. Other types of roller bearings, such as cylindrical roller bearings, tapered roller bearings, needle roller bearings, etc., can be applied to any use requirements similar to those in the present invention.

[0024] It should be noted that the parts not described in detail in this solution are all existing technologies. The above embodiments are only used to illustrate the present invention, but the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the scope of protection of the present invention.

Claims

1. An ultra-high temperature resistant ball bearing, comprising a bearing outer ring (1), a bearing inner ring (2), and a rolling element (3), characterized in that: The bearing outer ring (1), the bearing inner ring (2) and the rolling element (3) are all made of carbon fiber reinforced ultra-high temperature ceramic matrix composite material.

2. The ultrahigh temperature resistant ball bearing according to claim 1, characterized in that: A retaining frame (4) for isolating the rolling elements (3) is also provided between the bearing outer ring (1) and the bearing inner ring (2).

3. The ultrahigh temperature resistant ball bearing according to claim 1, characterized in that: The rolling body (3) is a spherical rolling body.

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