CN116292623A - Air-floating roller - Google Patents

Air-floating roller Download PDF

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Publication number
CN116292623A
CN116292623A CN202310061468.0A CN202310061468A CN116292623A CN 116292623 A CN116292623 A CN 116292623A CN 202310061468 A CN202310061468 A CN 202310061468A CN 116292623 A CN116292623 A CN 116292623A
Authority
CN
China
Prior art keywords
air
bearing
roller
thrust
radial
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310061468.0A
Other languages
Chinese (zh)
Inventor
李记东
朱思伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jingxiao Suspension Suzhou Technology Co ltd
Original Assignee
Jingxiao Suspension Suzhou Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jingxiao Suspension Suzhou Technology Co ltd filed Critical Jingxiao Suspension Suzhou Technology Co ltd
Priority to CN202310061468.0A priority Critical patent/CN116292623A/en
Publication of CN116292623A publication Critical patent/CN116292623A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
    • F16C32/0614—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
    • F16C32/0614—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings
    • F16C32/0622—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings via nozzles, restrictors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0681—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load
    • F16C32/0696—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load for both radial and axial load

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

The invention discloses an air-floating roller, which comprises a roller provided with a thrust disc, a radial air-floating bearing matched with the roller and a thrust air-floating bearing. The radial and thrust air bearing is provided with an air inlet hole, an air chamber and an orifice, clean compressed air enters the bearing air chamber from the air inlet hole and then enters an axial and radial air bearing surface through the orifice, and the air bearing surface is the contact position of the radial bearing and the roller as well as the thrust bearing and the thrust disc. The air-bearing surface is designed with a micron-sized gap, and compressed gas forms an air film after entering the air-bearing surface, so that the lubrication effect is achieved. The invention combines the roller and the air bearing, supports the roller by utilizing the static pressure air bearing principle, realizes high-speed and high-precision rotation, and prolongs the service life of the roller.

Description

Air-floating roller
Technical Field
The invention relates to an air-floating roller, which is designed to be an air-floating roller by using a roller supported by a ball bearing, and can improve the running rotating speed and precision of the roller and prolong the service life of the roller by utilizing the characteristics of high precision, maintenance-free and small friction force of the air-floating bearing.
Background
The use of rollers is very common and important in industrial processes. Papermaking, plastics, coating, printing, weaving, dyeing, chemical industry, etc. are used in a large number and the speed and accuracy of the rolls directly affect the production speed and product quality. In the conventional production process, the roller is supported by the ball bearings, so that the speed and the precision are limited, and the risk of product pollution is also possible because oil lubrication is required.
Disclosure of Invention
The technical problems solved by the invention are as follows: the prior art supports rollers with ball bearings, which are limited in speed and accuracy, and may also present a risk of contaminating the product.
In order to solve the technical problems, the invention provides the following technical scheme: the air-float roller comprises a roller provided with a thrust disk, a radial air-float bearing and a thrust air-float bearing, wherein the radial air-float bearing and the thrust air-float bearing are matched on the roller, a first air inlet hole and a first radial orifice communicated with the first air inlet hole are arranged on the radial air-float bearing, and the first radial orifice is communicated with a first air-float surface between the roller and the radial air-float bearing; the thrust air bearing is provided with a second air inlet hole and a first axial orifice communicated with the second air inlet hole, and the first axial orifice is communicated with a first thrust surface between the thrust disk and the thrust air bearing.
Clean compressed gas enters the radial air bearing from the first air inlet hole, and enters the first air bearing surface through the first radial throttle hole, wherein the first air bearing surface is the contact position of the radial air bearing and the roller. The first air floating surface is designed with a micron-sized gap, and compressed gas forms an air film after entering the first air floating surface, so that the lubrication effect is achieved.
Clean compressed gas enters the thrust air bearing from the second air inlet hole, and enters the first thrust surface through the first axial orifice, wherein the first thrust surface is the contact position of the thrust air bearing and the thrust disc. The first thrust surface is designed with a micron-sized gap, and compressed gas forms an air film after entering the first thrust surface, thereby playing a role in lubrication.
Rotational speed and accuracy are very important parameters of a roller, and conventional rollers generally use ball bearings as supports, and the ball bearings are limited in rotational speed and accuracy due to the contact friction characteristics of the ball bearings. The air-float roller is clean compressed gas as a lubricating medium, a layer of gas film is formed between the air-float bearing and the roller by the compressed gas, the roller can be supported by the gas film with certain rigidity, the stator and the rotor are not contacted, and the lubrication function is achieved, and the rotating speed and the precision of the roller can be improved by many times compared with those of the ball bearing because the viscosity coefficient of the gas is low and the friction force is very small.
According to the air-floating roller, the roller and the air-floating bearing are integrated, the roller is supported by utilizing the static air-floating principle, high-speed and high-precision rotation is realized, and the service life of the roller is prolonged.
Compared with the traditional roller, the air-floating roller has the advantages of higher speed, higher precision and longer service life.
Drawings
The invention is further described with reference to the accompanying drawings:
fig. 1 is a schematic view of an air bearing roller.
The symbols in the drawings illustrate:
10. a roller; 11. a thrust plate;
20. a radial air bearing; 21. a first air inlet hole; 22. a first radial orifice; 23. a first air bearing surface; 24. a first air chamber;
30. thrust air bearing; 31. a second air inlet hole; 32. a first axial orifice; 33. a first thrust surface; 34. a second air chamber;
40. a bidirectional air bearing; 41. a third air inlet hole; 42. a second radial orifice; 43. a second axial orifice; 44. a second air bearing surface; 45. a second thrust surface; 46. and a third air chamber.
Detailed Description
Referring to fig. 1, an air-floating roller comprises a roller 10 provided with a thrust disk 11, a radial air-floating bearing 20 and a thrust air-floating bearing 30 which are matched on the roller, wherein a first air inlet hole 21 and a first radial orifice 22 communicated with the first air inlet hole are arranged on the radial air-floating bearing, and the first radial orifice is communicated with a first air-floating surface 23 between the roller and the radial air-floating bearing. The thrust air bearing is provided with a second air inlet hole 31 and a first axial orifice 32 communicated with the second air inlet hole, and the first axial orifice is communicated with a first thrust surface 33 between the thrust disk and the thrust air bearing.
Clean compressed gas enters the radial air bearing 20 from the first air inlet hole 21 and enters the first air bearing surface 23 through the first radial orifice 22, and the first air bearing surface is the contact position of the radial air bearing 20 and the roller 10. The first air floating surface 23 is designed with a micron-sized gap, and compressed air forms an air film after entering the first air floating surface, thereby playing a role in lubrication.
Clean compressed gas enters the thrust air bearing 30 from the second air inlet hole 31 and passes through the first axial orifice 32 to enter the first thrust surface 33, which is the contact position of the thrust air bearing 30 and the thrust disk 11. The first thrust surface is designed with a micron-sized gap, and compressed gas enters the first thrust surface 33 to form an air film for lubrication.
The roller 10 is combined with a radial air bearing 20 and a thrust air bearing 30, and the roller 10 is supported to rotate by utilizing the static air bearing principle. Wherein the radial air bearing 20 provides the bearing capacity, and the thrust air bearing 30 prevents the axial movement of the roller 10.
The roller 10 is matched with a bidirectional air bearing 40, a third air inlet hole 41, a second radial orifice 42 communicated with the third air inlet hole and a second axial orifice 43 are arranged on the bidirectional air bearing, the second radial orifice is communicated with a second air bearing surface 44 between the roller and the bidirectional air bearing, and the second axial orifice is communicated with a second thrust surface 45 between the thrust disc 11 and the bidirectional air bearing.
Clean compressed gas enters the bi-directional air bearing 40 from the third inlet orifice 41, enters the second thrust surface 45 through the second axial orifice 43, and enters the second air bearing surface 44 through the second radial orifice 42. The second thrust surface 45 is a contact position of the bidirectional air bearing 40 and the thrust disk 11, and the second thrust surface 44 is a contact position of the bidirectional air bearing 40 and the roller 10. The second thrust surface and the second air floating surface are both designed with micron-sized gaps, and compressed gas enters the second thrust surface and the second air floating surface to form an air film, so that a lubricating effect is achieved.
A first air chamber 24 communicated with the first radial throttle hole 22 and the first air inlet hole 21 is arranged in the radial air bearing 20; a second air chamber 34 communicated with the first axial throttle hole 32 and the second air inlet hole 31 is arranged in the thrust air bearing 30. Clean compressed gas enters the first plenum 24 from the first inlet aperture 21 and then enters the first air bearing surface 23 through the first radial orifice 22. Clean compressed gas enters the second plenum 34 from the second inlet aperture 31 and then enters the first thrust surface 33 through the first axial orifice 32.
A third air chamber 46 communicating with the second radial orifice 42, the second axial orifice 43, and the third air intake hole 41 is provided in the bidirectional air bearing 40. Clean compressed gas enters the third plenum 46 from the third inlet orifice 41, then enters the second thrust surface 45 through the second radial orifice 43, and enters the second air bearing surface 44 through the second radial orifice 42.
Any air bearing uses compressed gas as a lubricating medium, so that the gas entering any air inlet hole can be any compressible gas in nature.
The air bearing used for the air bearing roller is not limited to small hole interception, but also can be porous interception or small gap interception.
The inner hole of the radial air bearing used for the air bearing roller is not limited to a cylindrical surface, but also can be a conical surface or a spherical surface.
The thrust air bearing of the air bearing roller is not limited to one side, but can be thrust at two sides.
The roller 10 and any air bearing can be of a split design or an integrated design, and the roller 10 is directly used as a rotor of the air bearing.
The foregoing is merely illustrative of the preferred embodiments of the present invention, and modifications in detail will readily occur to those skilled in the art based on the teachings herein without departing from the spirit and scope of the invention.

Claims (6)

1. The utility model provides an air supporting roller, includes roller (10) that are equipped with thrust disk (11), radial air supporting bearing (20) and thrust air supporting bearing (30) on the roller, its characterized in that: the radial air bearing is provided with a first air inlet hole (21) and a first radial orifice (22) communicated with the first air inlet hole, and the first radial orifice is communicated with a first air bearing surface (23) between the roller and the radial air bearing;
the thrust air bearing is provided with a second air inlet hole (31) and a first axial orifice (32) communicated with the second air inlet hole, and the first axial orifice is communicated with a first thrust surface (33) between the thrust disk and the thrust air bearing.
2. An air-bearing roller as in claim 1, wherein: the roller (10) is matched with a bidirectional air bearing (40), a third air inlet hole (41), a second radial orifice (42) communicated with the third air inlet hole and a second axial orifice (43) are arranged on the bidirectional air bearing, the second radial orifice is communicated with a second air bearing surface (44) between the roller and the bidirectional air bearing, and the second axial orifice is communicated with a second thrust surface (45) between the thrust disc (11) and the bidirectional air bearing.
3. An air-bearing roller as in claim 1, wherein: a first air chamber (24) communicated with a first radial orifice (22) and a first air inlet hole (21) is arranged in the radial air bearing (20); a second air chamber (34) communicated with the first axial throttle hole (32) and the second air inlet hole (31) is arranged in the thrust air bearing (30).
4. An air-bearing roller as claimed in claim 2, wherein: a third air chamber (46) communicated with the second radial throttle hole (42), the second axial throttle hole (43) and the third air inlet hole (41) is arranged in the bidirectional air bearing (40).
5. An air-bearing roller as in claim 1, wherein: the roller (10) and any air bearing are designed separately.
6. An air-bearing roller as in claim 1, wherein: the roller (10) and any air bearing are integrally designed, and the roller is used as a rotor of the air bearing.
CN202310061468.0A 2023-01-17 2023-01-17 Air-floating roller Pending CN116292623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310061468.0A CN116292623A (en) 2023-01-17 2023-01-17 Air-floating roller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310061468.0A CN116292623A (en) 2023-01-17 2023-01-17 Air-floating roller

Publications (1)

Publication Number Publication Date
CN116292623A true CN116292623A (en) 2023-06-23

Family

ID=86834974

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310061468.0A Pending CN116292623A (en) 2023-01-17 2023-01-17 Air-floating roller

Country Status (1)

Country Link
CN (1) CN116292623A (en)

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