CN113124056A - Air-float thrust bearing based on axial dense-bead adsorption - Google Patents

Air-float thrust bearing based on axial dense-bead adsorption Download PDF

Info

Publication number
CN113124056A
CN113124056A CN202110457843.4A CN202110457843A CN113124056A CN 113124056 A CN113124056 A CN 113124056A CN 202110457843 A CN202110457843 A CN 202110457843A CN 113124056 A CN113124056 A CN 113124056A
Authority
CN
China
Prior art keywords
air
bearing
shaft
sleeve
axial
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
CN202110457843.4A
Other languages
Chinese (zh)
Inventor
温众普
石照耀
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.)
Beijing University of Technology
Original Assignee
Beijing University of Technology
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 Beijing University of Technology filed Critical Beijing University of Technology
Priority to CN202110457843.4A priority Critical patent/CN113124056A/en
Publication of CN113124056A publication Critical patent/CN113124056A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/10—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly
    • F16C19/12—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly for supporting the end face of a shaft or other member, e.g. footstep 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
    • F16C32/0681—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load
    • F16C32/0692—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load for axial load only
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/40—Ball cages for multiple rows of balls
    • 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
    • F16C2316/00—Apparatus in health or amusement
    • F16C2316/10—Apparatus in health or amusement in medical appliances, e.g. in diagnosis, dentistry, instruments, prostheses, medical imaging appliances
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/43—Aeroplanes; Helicopters
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/47—Cosmonautic vehicles, i.e. bearings adapted for use in outer-space

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

An air-float thrust bearing based on axial dense-bead adsorption belongs to the technical field of air bearings and air lubrication. The device comprises an air floating shaft, an air floating sleeve, a thrust plate and a load absorbing device, wherein the air floating shaft is T-shaped, the air floating shaft and the thrust plate are arranged on two sides of the air floating sleeve, and a steel ball in a retainer is positioned between the air floating shaft and the air floating sleeve so as to enable the air floating shaft and the air floating sleeve to be in interference fit. The air-floating bearing is used for improving the rotation precision, reducing the radial runout of the bearing, and simultaneously, the dense-ball shaft system is used for improving the axial bearing, the rigidity and the overall stability of the main shaft. The invention combines a dense-bead shaft system and an air bearing technology, and provides an air thrust bearing based on axial dense-bead suction loading, thereby achieving the purpose of giving consideration to both bearing precision and bearing.

Description

Air-float thrust bearing based on axial dense-bead adsorption
Technical Field
The invention relates to an air-floatation thrust bearing, in particular to an air-floatation thrust bearing based on axial dense-bead adsorption.
Background
The static pressure air bearing has the obvious advantages of long service life, high precision, low power consumption, good damping characteristic, wide speed range, convenient processing and the like, and has important application in the fields of precision and ultra-precision engineering, micro engineering, space technology, aerospace medical instruments, nuclear energy engineering and the like. Therefore, a plurality of scholars do non-dropping research on the bearing so as to optimize and improve the performance of the bearing.
In both patent CN200810209792.8 "a porous aerostatic thrust bearing" and patent CN201810910337.4 "a vacuum adsorption type porous aerostatic thrust bearing", an air bearing using porous material is described, which improves the bearing characteristics of the bearing to some extent, but does not solve the problem that the porous material is easy to block. The invention discloses an air-floatation thrust bearing based on outer ring coplanar absorption, which is designed from the perspective of increasing an absorption structure and solves the problem that the bearing performance is reduced because a porous material is easy to block.
Patent CN 201620829583.3 "a vacuum suction support plate module" has proposed a strutting arrangement based on vacuum adsorption technique, prevents to place the flexible circuit board on the frame of breathing in, and the sawtooth structure of special design cooperates the structure of spacer pin for flexible circuit board laminating covers with on, guarantees the circuit board during processing and levels, improves the yield. The technology is mainly used for supporting devices of easily-deformed thin plate type loads, and the purposes of improving precision and increasing loads cannot be achieved.
The CN201821164581.2 patent "vibrating ball suction device" adopts a method of sucking the solder balls in the ball storage pool by vacuum suction force, so that the air around the ball storage box can be sucked into the ball storage pool through the air holes by the air inlet channel, and a longitudinal air flow is generated to blow the solder balls to the upper die base by the air holes, and the efficiency of the upper die base for sucking the solder balls can be further improved by blowing the solder balls to the upper die base by the longitudinal air flow. The technology adopts a vacuum negative pressure technology to counteract gravity, plays a role in increasing load to a certain extent, but is not suitable for bearing structures with rotation precision requirements.
The existing air bearing technology has high precision but poor bearing performance, and the dense-bead shafting has low precision but excellent bearing performance. Therefore, the invention combines the dense-bead shaft system and the air bearing technology, utilizes the air bearing to improve the rotation precision and reduce the radial runout of the bearing, simultaneously utilizes the dense-bead shaft system to improve the axial bearing and rigidity and the integral stability of the main shaft, provides the air thrust bearing based on the axial dense-bead suction, and achieves the aim of giving consideration to the bearing precision and the bearing performance.
Disclosure of Invention
The invention aims to solve the problems that the air bearing technology in the prior art is high in precision but often poor in bearing performance, the dense-bead shaft system and the air bearing technology are combined, radial runout of a bearing is reduced, and meanwhile, the axial bearing and rigidity are improved by using the dense-bead shaft system, so that the purpose of giving consideration to both bearing precision and bearing is achieved.
The above purpose is realized by the following technical scheme:
the air-floating thrust bearing based on axial dense-bead adsorption comprises an air-floating shaft 1, an air-floating sleeve 2 and a thrust plate 3, wherein the air-floating shaft 1 is T-shaped, the air-floating shaft 1 and the thrust plate 3 are arranged on two sides of the air-floating sleeve 2, a plurality of throttles 5 are arranged in the air-floating sleeve 2, the throttles 5 are arranged symmetrically about the center of a rotating shaft, an annular air guide groove 6 is formed in the middle of the air-floating sleeve 2, and a step 7 is processed at the end part of the air-floating sleeve 2; an adsorption device 4 is arranged between the air flotation shaft 1 and the air flotation sleeve 2, and the specific structure of the adsorption device 4 is as follows.
The load absorbing device 4 comprises a retainer 8 and a plurality of steel balls 10, a mounting hole 9 is processed on the retainer 8, the steel balls 10 are mounted in the mounting hole 9, the steel balls 10 are located between the air floatation shaft 1 and the air floatation sleeve 2 and enable the air floatation shaft and the air floatation sleeve 2 to be in interference fit, and the edge of the retainer 8 is mounted on the air floatation sleeve 2 and is positioned by a step 7.
The axial supporting force of the air floating shaft 1 of the air floating thrust bearing based on the axial dense ball adsorption is provided by the adsorption device 4, and the radial supporting force is provided by the flow controller 5.
The mounting holes 9 formed in the retainer 8 of the air-floating thrust bearing based on axial dense ball adsorption and the mounted steel balls 10 are distributed in a vortex line 11 and are influenced by the rotation angle and the diameter of the steel balls 10, and the vortex line 11 can be in the form of a single vortex line, a double vortex line and a multi-vortex line; the larger the rotation angle and the diameter of the steel ball 10, the larger the number of the spiral lines 11.
By adopting the structure, the invention has the following characteristics and beneficial effects:
1. the device combines the dense-bead shaft system and the air bearing technology, utilizes the air bearing to improve the rotation precision and reduce the radial runout of the bearing, simultaneously utilizes the dense-bead shaft system to improve the axial bearing and rigidity and the integral stability of the main shaft, provides the air thrust bearing based on the axial dense-bead suction load, and achieves the aim of giving consideration to the bearing precision and the bearing performance.
2. The device solves the common problems of low radial rigidity and poor integral stability of the air floatation main shaft, and provides a corresponding dense bead adsorption structure. The effect of combining the air floatation support and the dense bead support is formed, and the bearing characteristic of the air floatation support is improved.
Drawings
FIG. 1 is a three-dimensional cross-sectional view of an air thrust bearing based on axial dense bead suction;
FIG. 2 is an air bearing sleeve;
FIG. 3 is a drawing of a load absorbing device;
FIG. 4 is a cage;
in the figure: 1. an air bearing shaft; 2. an air floating sleeve; 3. a thrust plate; 4. a load absorbing device; 5. a restrictor; 6. a gas guide groove; 7. a step; 8. a holder; 9. mounting holes; 10. and (5) steel balls.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement objects and the functions of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1, the air-float thrust bearing based on axial dense-bead adsorption comprises an air-float shaft 1, an air-float sleeve 2 and a thrust plate 3, wherein the air-float shaft 1 is in a T shape, and the air-float shaft 1 and the thrust plate 3 are arranged at two sides of the air-float sleeve 2
Referring to fig. 1 and 2, a plurality of throttles 5 are installed inside the air flotation sleeve 2, the throttles 5 are installed symmetrically about the center of a rotating shaft, an annular air guide groove 6 is formed in the middle of the air flotation sleeve 2, and a step 7 is machined at the end of the air flotation sleeve 2; an adsorption device 4 is arranged between the air flotation shaft 1 and the air flotation sleeve 2, and the specific structure of the adsorption device 4 is as follows.
Referring to fig. 2 and 3, the load absorbing device 4 comprises a retainer 8 and a plurality of steel balls 10, a mounting hole 9 is formed in the retainer 8, the steel balls 10 are mounted in the mounting hole 9, the steel balls 10 are located between the air floatation shaft 1 and the air floatation sleeve 2 and enable the air floatation shaft and the air floatation sleeve 2 to be in interference fit, and the edge of the retainer 8 is mounted on the air floatation sleeve 2 and is positioned by a step 7. The axial supporting force of the air floating shaft 1 of the air floating thrust bearing based on the axial dense ball adsorption is provided by the adsorption device 4, and the radial supporting force is provided by the flow controller 5.
Referring to fig. 4, the mounting holes 9 formed in the retainer 8 and the mounted steel balls 10 are distributed in a vortex line 11, and the vortex line 11 can be in the form of a single vortex line, a double vortex line and a multi-vortex line under the influence of a vortex angle and the diameter of the steel balls 10; the larger the rotation angle and the diameter of the steel ball 10, the larger the number of the spiral lines 11.
The foregoing shows and describes the fundamental features of the invention and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (3)

1. Air supporting footstep bearing based on tight pearl of axial is inhaled and is carried, including air supporting axle (1), air supporting cover (2), thrust plate (3), wherein air supporting axle (1) is the T type, and air supporting axle (1) is installed in the both sides of air supporting cover (2) with thrust plate (3), its characterized in that: a plurality of throttles (5) are arranged inside the air flotation sleeve (2), the throttles (5) are arranged symmetrically about the center of the rotating shaft, an annular air guide groove (6) is formed in the middle of the air flotation sleeve (2), and steps (7) are machined at the end part of the air flotation sleeve (2); an adsorption device (4) is arranged between the air floating shaft (1) and the air floating sleeve (2), and the specific structure of the adsorption device (4) is as follows;
the load absorption device (4) comprises a retainer (8) and a plurality of steel balls (10), a mounting hole (9) is formed in the retainer (8), the steel balls (10) are mounted in the mounting hole (9), the steel balls (10) are located between the air floatation shaft (1) and the air floatation sleeve (2) and are in interference fit with the air floatation shaft and the air floatation sleeve, and the edge of the retainer (8) is mounted on the air floatation sleeve (2) and is positioned by a step (7).
2. The axial dense bead adsorption based air thrust bearing of claim 1, wherein: the axial supporting force of the air floating shaft (1) of the device is provided by the suction device (4), and the radial supporting force is provided by the restrictor (5).
3. The axial dense bead adsorption based air thrust bearing of claim 1, wherein: mounting holes (9) formed in the retainer (8) and the mounted steel balls (10) are distributed in a vortex line (11) and are influenced by a rotation angle and the diameter of the steel balls (10), and the vortex line (11) can be in the form of a single vortex line, a double vortex line and a multi-vortex line; the larger the rotation angle and the diameter of the steel ball (10), the larger the number of the vortex lines (11).
CN202110457843.4A 2021-04-27 2021-04-27 Air-float thrust bearing based on axial dense-bead adsorption Pending CN113124056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110457843.4A CN113124056A (en) 2021-04-27 2021-04-27 Air-float thrust bearing based on axial dense-bead adsorption

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110457843.4A CN113124056A (en) 2021-04-27 2021-04-27 Air-float thrust bearing based on axial dense-bead adsorption

Publications (1)

Publication Number Publication Date
CN113124056A true CN113124056A (en) 2021-07-16

Family

ID=76780310

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110457843.4A Pending CN113124056A (en) 2021-04-27 2021-04-27 Air-float thrust bearing based on axial dense-bead adsorption

Country Status (1)

Country Link
CN (1) CN113124056A (en)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980030898A (en) * 1996-10-30 1998-07-25 김광호 Fluid bearing device
DE69616764D1 (en) * 1995-12-22 2001-12-13 Koninkl Philips Electronics Nv DYNAMIC GROOVE BEARING WITH OIL LOCK
JP2011179577A (en) * 2010-02-26 2011-09-15 Oiles Corp Cam follower
CN102518667A (en) * 2011-12-19 2012-06-27 西安威而信精密仪器有限公司 Conical air floating shaft system
CN103016548A (en) * 2012-12-26 2013-04-03 中国航空工业集团公司北京航空精密机械研究所 Middle driving type dense bead shaft system mechanism
JP2013137082A (en) * 2011-12-28 2013-07-11 Abico Gijutsu Kenkyusho:Kk Bearing and grinding device
CN103615466A (en) * 2013-11-27 2014-03-05 九江精密测试技术研究所 High-precision air floatation shaft system air supply mechanism
CN103994145A (en) * 2014-05-30 2014-08-20 广州市昊志机电股份有限公司 Novel air floating shaft
DE102016202689A1 (en) * 2016-02-22 2017-08-24 Siemens Healthcare Gmbh Bearing arrangement for pivotally mounting a component to be moved rotationally, and medical examination device comprising such a bearing arrangement
CN109882506A (en) * 2019-03-28 2019-06-14 北京工业大学 A kind of aerostatic bearing structure reducing air film micro-vibration
CN110230642A (en) * 2018-03-06 2019-09-13 华中科技大学 A kind of new liquid hydrostatic thrust bearing device
CN210115464U (en) * 2019-06-20 2020-02-28 深圳市华腾半导体设备有限公司 Precise outer rotor air-float main shaft
CN110894854A (en) * 2019-09-25 2020-03-20 北京工业大学 Integrated permanent magnetism suspension's heavy load air supporting main shaft

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69616764D1 (en) * 1995-12-22 2001-12-13 Koninkl Philips Electronics Nv DYNAMIC GROOVE BEARING WITH OIL LOCK
KR19980030898A (en) * 1996-10-30 1998-07-25 김광호 Fluid bearing device
JP2011179577A (en) * 2010-02-26 2011-09-15 Oiles Corp Cam follower
CN102518667A (en) * 2011-12-19 2012-06-27 西安威而信精密仪器有限公司 Conical air floating shaft system
JP2013137082A (en) * 2011-12-28 2013-07-11 Abico Gijutsu Kenkyusho:Kk Bearing and grinding device
CN103016548A (en) * 2012-12-26 2013-04-03 中国航空工业集团公司北京航空精密机械研究所 Middle driving type dense bead shaft system mechanism
CN103615466A (en) * 2013-11-27 2014-03-05 九江精密测试技术研究所 High-precision air floatation shaft system air supply mechanism
CN103994145A (en) * 2014-05-30 2014-08-20 广州市昊志机电股份有限公司 Novel air floating shaft
DE102016202689A1 (en) * 2016-02-22 2017-08-24 Siemens Healthcare Gmbh Bearing arrangement for pivotally mounting a component to be moved rotationally, and medical examination device comprising such a bearing arrangement
CN110230642A (en) * 2018-03-06 2019-09-13 华中科技大学 A kind of new liquid hydrostatic thrust bearing device
CN109882506A (en) * 2019-03-28 2019-06-14 北京工业大学 A kind of aerostatic bearing structure reducing air film micro-vibration
CN210115464U (en) * 2019-06-20 2020-02-28 深圳市华腾半导体设备有限公司 Precise outer rotor air-float main shaft
CN110894854A (en) * 2019-09-25 2020-03-20 北京工业大学 Integrated permanent magnetism suspension's heavy load air supporting main shaft

Similar Documents

Publication Publication Date Title
CN110039330B (en) High-thrust closed gas static pressure rotary table
CN113217541B (en) Porous ring belt exhaust type static pressure air-float thrust bearing
CN103267062B (en) A kind of multilayer bubbling foil dynamical pressure gas lubricated thrust bearing
CN113124057B (en) Static pressure air-float thrust bearing based on multi-ring belt exhaust
CN211778556U (en) T-shaped small-hole throttling air-flotation rotary table
CN110894854B (en) Integrated permanent magnetism suspension's heavy load air supporting main shaft
CN201396194Y (en) Turbocharger supported by static pressure gas bearing with self-lubricating sliding supercharge flow channel groove
CN209340165U (en) Centrifugal compressor and coolant circulating system with diffuser air supply channel
CN113124055B (en) Air-float thrust bearing based on radial dense-bead adsorption
CN113635085A (en) Precise air-flotation rotary table driven by outer rotor motor
CN117090862B (en) Magnetic preloaded air bearing and linear platform with same
CN206338326U (en) Turbocharger
CN113124054B (en) Air-float thrust bearing based on outer ring coplane suction load
CN113124056A (en) Air-float thrust bearing based on axial dense-bead adsorption
CN101550864B (en) Turbocharger supported by pressure-charging flow passage groove self-lubricating dynamic-static pressure air bearing
CN116221278A (en) Surface throttling type air foot
CN208919085U (en) A kind of vacuum adsorption porous gas static pressure thrust bearing
CN107269701B (en) Plane air bearing with air groove
CN201535319U (en) Inner pion-shaped air wedge slot dynamic and static pressure composite air bearing
CN114251360A (en) Micro-nano porous throttling static pressure air-float thrust bearing
CN114251362A (en) Micro-nano porous throttling air floating ball surface bearing
CN101532536A (en) Thrust gas bearing of hydrostatic directional radiation groove
CN201391541Y (en) Insert bearing with dismounting groove
CN111810538A (en) Light nylon retainer for ball bearing of driving motor
CN112727925B (en) Asymmetric air bearing for built-in pitching mechanism

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20210716