CN-224212855-U - Air spinning bearing

Abstract

The utility model discloses an air spinning bearing which comprises a mandrel and an outer ring, wherein a cavity is formed between the outer ring and the mandrel, an annular groove is formed in the outer wall of the outer ring, a limit ring is sleeved in the annular groove and used for being in interference fit connection with an axle seat mounting hole of an air spinning machine, the limit ring is provided with an opening, a protruding part is arranged on the end face of the limit ring, a notch communicated with the annular groove is formed in the outer wall of the outer ring, and the notch corresponds to the protruding part so as to limit the outer ring to freely rotate relative to an axle seat of the air spinning machine. The utility model has novel structure, the limit ring can prevent the outer ring from wearing relative to the shaft seat of the rotor spinning machine due to free rotation, the service life of the outer ring is prolonged, and the practicability is strong.

Inventors

• YANG HONGHUI
• YANG CHAOJUN

Assignees

• 新昌县容天乐轴承科技有限公司

Dates

Publication Date

20260508

Application Date

20250605

Claims (7)

1. 1. An air spinning bearing comprising: the device comprises a mandrel and an outer ring, wherein a cavity is formed between the outer ring and the mandrel; the method is characterized in that: The outer wall of the outer ring is provided with a ring groove, a limit ring is sleeved in the ring groove and is in interference fit connection with a shaft seat mounting hole of the air flow spinning machine, the limit ring is provided with an opening, the end face of the limit ring is provided with a protruding portion, the outer wall of the outer ring is provided with a notch communicated with the ring groove, and the notch corresponds to the protruding portion so as to limit the outer ring to freely rotate relative to the shaft seat of the air flow spinning machine.
2. 2. The air spinning bearing of claim 1, wherein a positioning groove is formed in the annular groove, an inner convex part is formed on the inner wall of the limit ring, and the inner convex part corresponds to the positioning groove.
3. 3. An air spinning bearing according to claim 1, wherein the retainer ring is provided with an axial reinforcement.
4. 4. The air spinning bearing of claim 1, wherein the outer wall of the outer ring is provided with an oil filling hole communicated with the cavity.
5. 5. The air spinning bearing of claim 4, wherein said oil filling hole is provided with a sealing plug.
6. 6. The air spinning bearing of claim 1, wherein the inner wall of the outer ring is provided with a spiral groove.
7. 7. An air spinning bearing according to claim 1, wherein the surface of the outer race is coated with a wear layer.

Description

Air spinning bearing Technical Field The utility model belongs to the technical field of bearings, and particularly relates to an air spinning bearing. Background Air spinning is a technology for condensing, twisting and outputting fibers into yarns in a spinning cup rotating at a high speed by utilizing air flow, and an air spinning machine is equipment for spinning by utilizing the technology. In an air spinning machine, an air spinning bearing is used as a high-speed precise bearing and is specially designed for supporting a spinning cup of the spinning machine so as to ensure running stability. The outer ring of the rotor spinning bearing is usually arranged on a shaft seat of the rotor spinning machine, the outer ring and a shaft seat mounting hole are connected in a clearance fit manner, when the rotating speed is high, the outer ring can freely rotate to be worn, and the service life is greatly shortened. The conventional patent document (publication No. CN 208138327U) discloses a "bearing for an air spinning machine", and the above-mentioned problems are also present. Disclosure of Invention The utility model aims to solve the technical problems in the prior art, and provides the air spinning bearing which is novel in structure, the limit ring can prevent the outer ring from wearing relative to the shaft seat of the air spinning machine due to free rotation, the service life of the outer ring is prolonged, and the practicability is strong. In order to solve the technical problems, the utility model adopts the following technical scheme: The air spinning bearing comprises a mandrel and an outer ring, wherein a cavity is formed between the outer ring and the mandrel, and is characterized in that an annular groove is formed in the outer wall of the outer ring, a limit ring is sleeved in the annular groove and used for being in interference fit connection with an axle seat mounting hole of an air spinning machine, the limit ring is provided with an opening, a protruding part is arranged on the end face of the limit ring, a notch communicated with the annular groove is formed in the outer wall of the outer ring, and the notch corresponds to the protruding part so as to limit the outer ring to freely rotate relative to an axle seat of the air spinning machine. The bearing is novel in structure, the limit ring can prevent the outer ring from freely rotating relative to the shaft seat of the rotor spinning machine to be worn, the service life of the outer ring is prolonged, and the practicability is high. Further, the positioning groove is formed in the annular groove, the inner wall of the limiting ring is provided with the inner protruding portion, the inner protruding portion corresponds to the positioning groove, the contact area between the limiting ring and the outer ring is increased, the limiting range is larger, the limiting effect of the limiting ring on the outer ring is improved, and the outer ring is not easy to rotate freely. Further, be equipped with axial reinforcement portion on the spacing collar, improved spacing collar's structural strength, be difficult for being pressed and warp, damage, long service life. Further, an oil filling hole communicated with the cavity is formed in the outer wall of the outer ring. Lubricating oil is injected into the oil injection hole to lubricate the cavity, reduce friction and slow down abrasion. Further, a sealing plug is arranged on the oil filling hole. The sealing plug blocks the oil filling hole, prevents the lubricating oil from losing outwards, and is convenient to use. Further, a spiral groove is formed in the inner wall of the outer ring. The spiral groove can store lubricating oil to form a continuous oil film, so that the lubricating effect is improved, the spiral structure generates pumping action when the bearing rotates, the circulating flow of the lubricating oil is promoted, and dry friction is avoided. Further, the surface of the outer race is coated with a wear layer. The wear-resistant layer can be a silicon carbide layer, so that the wear resistance of the outer ring is improved, the wear-resistant layer is not easy to wear and rust, and the service life is long. Due to the adoption of the technical scheme, the utility model has the following beneficial effects: 1. The setting of spacing collar fills the clearance difference between outer lane and the axle bed mounting hole of air spinning machine easily, makes spacing collar and the axle bed mounting hole interference fit of air spinning machine, and the spacing collar hardly takes place free rotation, and bulge and breach cooperation for the spacing collar can restrict the outer lane free rotation, and then slows down wearing and tearing, compares in prior art outer lane and the axle bed mounting hole of air spinning machine adopt clearance fit's connected mode, avoids the outer lane to take place free rotation and wearing and tearing, has prolonged the life of outer lane. 2. After