CN103016531A - Friction-free rotary air supply air flotation device - Google Patents
Friction-free rotary air supply air flotation device Download PDFInfo
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- CN103016531A CN103016531A CN2012105950815A CN201210595081A CN103016531A CN 103016531 A CN103016531 A CN 103016531A CN 2012105950815 A CN2012105950815 A CN 2012105950815A CN 201210595081 A CN201210595081 A CN 201210595081A CN 103016531 A CN103016531 A CN 103016531A
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- throttle orifice
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Abstract
The invention relates to a friction-free rotary air supply air flotation device, which is characterized in that four annular sealing grooves are respectively formed in each of the two sides of an annular air cavity groove at the upper end of an inner core; through holes are formed along the radial direction and introduced to the circle center to form air intake holes; radial throttling orifices are uniformly distributed on the circumference at the middle part and the area close to the bottom of the inner core, and the radial throttling orifices are communicated at the circle center along the radial direction; a blind hole at the top end is formed at the circle center of the top end of the inner core along the axial direction to form an air outlet, and the air outlet is communicated with the radial throttling orifices and the air intake holes; blind holes are formed at the bottom end of the inner core along the axial direction to form bottom end axial throttling orifices, and the bottom end axial throttling orifices are uniformly distributed at the bottom end of the inner core and communicated with the bottom radial throttling orifices; blind holes are formed at the top end of the inner core along the axial direction to form top end axial throttling orifices, and the top end axial throttling orifices are uniformly distributed at the top end of the inner core and communicated with the middle part radial throttling orifices and the air intake holes; a threaded air inlet is formed at the upper part of an outer core; and pressure relief holes are uniformly distributed at the middle part of the outer core and are communicated with pressure relief grooves on the inner wall of the outer core. The friction-free rotary air supply air flotation device has the beneficial effects that air supply can be carried out continuously and is not affected by air pipe disturbance.
Description
Technical field
The present invention relates to the air supporting field.
Background of invention
The gas suspension system moves axially the field except can be applicable to air-bearing shafts, also can well be applied to air-bearing shafts and rotate the field, it is to replace oil as oiling agent with gas, consists of air film between axle and bearing housing, makes active face and stationary face avoid the desirable supporting element that directly contacts.
In a kind of application of thrust pneumatic bearing, thrust bearing is along with load-bearing member frictionless motion planar, as realize that many fans of vertically placing fold planar frictionless expansion motion of hinge, the bottom of hinge plate provides without friction support by the thrust pneumatic bearing and realizes rotating without friction between hinge, simultaneously thrust pneumatic bearing is passed through planar frictionless motion of floating cushion, satisfies the requirement that hinge launches without friction.The thrust pneumatic bearing is with hinge plate motion, if therefore adopt traditional air mode, steam line can produce on the motion of thrust pneumatic bearing the impact of disturbance, and the air feed circuit is many, easily twists, twine, and is not easy to installation and maintenance.
Summary of the invention
In order to solve the deficiency of the thrust bearing motion effects that has air-floating apparatus now, the rotating without friction of unaffected by disturbance of air pipes that the invention provides a kind of continuously air feed supplies air flotation device.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of rotation without friction supplies air flotation device, comprise inner core, outer core and end cap, described inner core cover is contained in outer in-core, described end cap comprises upper end cap, lower end cap, described outer core is fixed by bolt and upper end cap, lower end cap at two ends up and down, all has micro-gap between described inner core and outer core and inner core and upper end cap, the lower end cap;
Described inner core upper end has the annular air cavity groove one, the both sides of described annular air cavity groove respectively have annular seal groove, center of circle formation inlet hole is led in radially punching in the described annular air cavity groove, described inner core middle part and close bottom section are along uniform radially throttle orifice on the circumference, described radially throttle orifice radially is communicated with in the center of circle, described inner core is beaten vertically blind hole from the center of circle, top and is formed gas port, described air outlet is with radially throttle orifice and inlet hole are communicated with, described inner core bottom is in axial direction beaten blind hole and is formed the axial throttle orifice in bottom, the axial throttle orifice in described bottom be distributed on the inner core bottom in axial direction and bottom radially throttle orifice be communicated with, described inner core top is in axial direction beaten blind hole and is formed the top axial throttle orifice, described top axial throttle orifice be distributed on the inner core top at axial direction and middle part radially throttle orifice be communicated with, described axial throttle orifice also is communicated with inlet hole, uniform pressure relief vent on described upper end cap and the lower end cap, screwed suction port is arranged at described outer core top, the uniform relief hole in described outer core middle part, described relief hole is communicated with gas pressure relief slot on the outer in-core wall.
Further, the described rotation for air flotation device without friction also comprises total source of the gas, and it is the thrust pneumatic bearing of center of circle motion that described air outlet trachea air feed is given to supply air flotation device without the friction rotation.
Further, describedly also comprise total source of the gas without friction rotation for air flotation device, described air outlet trachea air feed is given it and is supplied air flotation device for another of center of circle motion without the friction rotation.Can carry out air feed by cascade system, for example will one at end giving without the friction rotation without the friction rotation for the air outlet trachea air feed of air flotation device be the thrust pneumatic bearing of center of circle motion for air flotation device.
Mentality of designing of the present invention is: supplying air flotation device without the friction rotation, is a composite air bearing that comprises the three parts such as labyrinth seal, radial air bearing, thrust pneumatic bearing in fact.
Have the inner core air cavity of one annular at inner core, and respectively have four road sealing grooves in the both sides of air cavity.After the body of calming the anger enters from outer core, be introduced in the annular air cavity of inner core, owing to having the gap between outer core and the inner core, separating in the annular air cavity both sides has four road sealing grooves, can effectively reduce the leakage rate of gas, thereby so that most of gas enters the suction port of inner core, this is labyrinth seal.
The pressurized gas that enters from the inner core suction port, most of air outlet output from inner core, sub-fraction is radially throttle orifice and the axial throttle orifice air feed that distributes on the inner core by the gas channels of inside, pressurized gas form air film through throttle orifice between inner core, outer core and end cap, realize rotating without friction of inner core.Can regard the compound body of a radial air bearing and thrust pneumatic bearing as.
All offer relief hole on end cap and the outer core up and down, relief hole communicates with atmosphere, has pressure reduction in the gap of assurance inner core and outer core, and pressurized gas form air film after entering the gap by throttle orifice.In order to reduce the vent flow of labyrinth seal, radially bleeder port has certain distance apart from seal groove, therefore the bleeder port of upper end cap is opened on the circle circumference of diameter less than inner core diameter, and have the air outlet on the upper-end surface, so the upper-end surface thrust bearing is that a diameter is than circlet face thrust pneumatic bearing, the exhaust port of lower end cap is opened on a circle circumference equal with inner core diameter, so thrust pneumatic bearing in lower end surface is a circular thrust pneumatic bearing.Have inner bolt hole and outer bolt hole on the lower end cap, the inner bolt hole is used for connecting lower end cap and outer core, and the outer bolt hole is used for whole device is fixed on the platform.The top of core has a suction port outside, and pressurized gas are inputted from suction port.Have screw thread at suction port, be used for being connected with admission line joint to connect.
Without friction rotation for the inner core of air flotation device outside in-core without the friction rotation, the gas major part that enters inner core from outer core is exported from the inner core air outlet, it is the thrust pneumatic bearing of center of circle motion for air flotation device that the air outlet trachea is given without the friction rotation to air feed, as shown in Figure 3, tracheae rotates with thrust bearing, can not twist in the process, stretch, twine, thrust bearing not produced the impact of additional power.
Supplying air flotation device without the friction rotation also is a well behaved air thrust bearing, by without friction rotation for the air outlet of air flotation device directly air feed give it and supply air flotation device for another of center of circle motion rotates without friction, realize continuous air feed, as shown in Figure 4, relative displacement is constant between adjacent two nothing friction rotation air feed, the impact that tracheae does not produce extra power to its motion, plenum system is simple.
Beneficial effect of the present invention is: continuous air feed, unaffected by disturbance of air pipes.
Description of drawings
Fig. 1 is without the schematic diagram of friction rotation for air flotation device.
Fig. 2 is without the stereogram of friction rotation for the air flotation device inner core.
Fig. 3 is for air flotation device air feed schematic diagram without the friction rotation.
Fig. 4 is for the another kind of air feed schematic diagram of air flotation device without the friction rotation.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
With reference to Fig. 1 ~ Fig. 4, a kind of rotation without friction supplies air flotation device, comprise inner core 13, outer core 12 and end cap, described inner core 13 is sleeved in the outer core 12, described end cap comprises upper end cap 10, lower end cap 6, described outer core is fixed by bolt and upper end cap 10, lower end cap 6 at two ends about in the of 13, all has micro-gap between described inner core 13 and outer core 12 and inner core 13 and upper end cap 10, the lower end cap 6;
Described inner core 13 upper ends have annular air cavity groove 3 one, the both sides of described annular air cavity groove 3 respectively have four road annular seal grooves 2, center of circle formation inlet hole 8 is led in radially punching in the described annular air cavity groove 3, described inner core 13 middle parts and close bottom section are along uniform radially throttle orifice 1 on the circumference, described radially throttle orifice 1 radially is communicated with in the center of circle, described inner core 13 is beaten vertically blind hole from the center of circle, top and is formed gas port 5, described air outlet 5 is with radially throttle orifice 1 and inlet hole 8 are communicated with, described inner core 13 bottoms are in axial direction beaten blind hole and are formed the axial throttle orifice 4 in bottom, the axial throttle orifice 4 in described bottom be distributed on the inner core bottom and in axial direction and bottom radially throttle orifice 1 be communicated with, described inner core 13 tops are in axial direction beaten blind hole and are formed top axial throttle orifice 20, described top axial throttle orifice 20 be distributed on the inner core top at axial direction and middle part radially throttle orifice 1 be communicated with, described axial throttle orifice 20 also is communicated with inlet hole 8, uniform upper pressure relief vent 9 and lower pressure relief vent 14 on described upper end cap 10 and the lower end cap 6, screwed suction port 7 is arranged at described outer core 12 tops, uniform (at least four) relief hole 11 on the described outer core 12 middle part circumference, described relief hole 11 is communicated with gas pressure relief slot on the outer in-core wall.
Described without friction rotation for air flotation device 18 by total source of the gas 19 air feed, describedly give without the friction rotation for air flotation device 18 as do exercises in the center of circle, track is 16 thrust pneumatic bearing 15 for air flotation device 18 air outlets 5 tracheas, 17 air feed without the friction rotation.
Described without friction rotation for air flotation device 18 air outlets 5 tracheas, 17 air feed give its for center of circle motion, track be 16 another supply air flotation device without the friction rotation, can carry out air feed by cascade system, realize continuous air feed unaffected by disturbance of air pipes.
Claims (3)
1. a nothing friction rotation is for air flotation device, it is characterized in that: comprise inner core, outer core and end cap, described inner core cover is contained in outer in-core, described end cap comprises upper end cap, lower end cap, described outer core is fixed by bolt and upper end cap, lower end cap at two ends up and down, all has micro-gap between described inner core and outer core and inner core and upper end cap, the lower end cap;
Described inner core upper end has the annular air cavity groove one, the both sides of described annular air cavity groove respectively have annular seal groove, center of circle formation inlet hole is led in radially punching in the described annular air cavity groove, described inner core middle part and close bottom section are along uniform radially throttle orifice on the circumference, described radially throttle orifice radially is communicated with in the center of circle, described inner core is beaten vertically blind hole from the center of circle, top and is formed gas port, described air outlet is with radially throttle orifice and inlet hole are communicated with, described inner core bottom is in axial direction beaten blind hole and is formed the axial throttle orifice in bottom, the axial throttle orifice in described bottom be distributed on the inner core bottom in axial direction and bottom radially throttle orifice be communicated with, described inner core top is in axial direction beaten blind hole and is formed the top axial throttle orifice, described top axial throttle orifice be distributed on the inner core top at axial direction and middle part radially throttle orifice be communicated with, described axial throttle orifice also is communicated with inlet hole, uniform pressure relief vent on described upper end cap and the lower end cap, screwed suction port is arranged at described outer core top, the uniform relief hole in described outer core middle part, described relief hole is communicated with gas pressure relief slot on the outer in-core wall.
2. as claimed in claim 1 the rotation without friction supplies air flotation device, it is characterized in that: described nothing friction rotation air feeder also comprises total source of the gas, and it is the thrust pneumatic bearing of center of circle motion that described air outlet trachea air feed is given to rotate for air flotation device without friction.
As claimed in claim 1 without friction rotation for air flotation device, it is characterized in that: describedly also comprise total source of the gas without friction rotation air feeder, described air outlet trachea air feed is given it and is supplied air flotation device for another of center of circle motion without the friction rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210595081.5A CN103016531B (en) | 2012-12-31 | 2012-12-31 | Friction-free rotary air supply air flotation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210595081.5A CN103016531B (en) | 2012-12-31 | 2012-12-31 | Friction-free rotary air supply air flotation device |
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| CN103016531A true CN103016531A (en) | 2013-04-03 |
| CN103016531B CN103016531B (en) | 2015-02-25 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952798A (en) * | 2016-07-13 | 2016-09-21 | 重庆大学 | High-precision static pressure air bearing |
| CN106402544A (en) * | 2016-10-11 | 2017-02-15 | 北京无线电计量测试研究所 | High-pressure gas channel slip ring |
| CN108583943A (en) * | 2018-03-12 | 2018-09-28 | 上海卫星工程研究所 | The non-contact feeder of the air supporting Physical Simulation Platform of enclosed gas film sealing |
| CN109261991A (en) * | 2018-10-24 | 2019-01-25 | 深圳市爱贝科精密机械有限公司 | A kind of high-speed air floatation electro spindle |
| CN109990097A (en) * | 2019-04-13 | 2019-07-09 | 江西理工大学南昌校区 | A kind of Three Degree Of Freedom high-low temperature chamber is vertically arranged low speed and wears case axis gas-tight sealing |
| CN111927886A (en) * | 2020-07-15 | 2020-11-13 | 杭州电子科技大学 | AACMM high-precision joint based on static pressure air bearing and supporting method thereof |
| CN113685440A (en) * | 2021-08-31 | 2021-11-23 | 清华大学 | Air-floatation rotating assembly and magnetic fluid sealing element comprising same |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952798A (en) * | 2016-07-13 | 2016-09-21 | 重庆大学 | High-precision static pressure air bearing |
| CN106402544A (en) * | 2016-10-11 | 2017-02-15 | 北京无线电计量测试研究所 | High-pressure gas channel slip ring |
| CN108583943A (en) * | 2018-03-12 | 2018-09-28 | 上海卫星工程研究所 | The non-contact feeder of the air supporting Physical Simulation Platform of enclosed gas film sealing |
| CN109261991A (en) * | 2018-10-24 | 2019-01-25 | 深圳市爱贝科精密机械有限公司 | A kind of high-speed air floatation electro spindle |
| CN109990097A (en) * | 2019-04-13 | 2019-07-09 | 江西理工大学南昌校区 | A kind of Three Degree Of Freedom high-low temperature chamber is vertically arranged low speed and wears case axis gas-tight sealing |
| CN111927886A (en) * | 2020-07-15 | 2020-11-13 | 杭州电子科技大学 | AACMM high-precision joint based on static pressure air bearing and supporting method thereof |
| CN113685440A (en) * | 2021-08-31 | 2021-11-23 | 清华大学 | Air-floatation rotating assembly and magnetic fluid sealing element comprising same |
| WO2023029201A1 (en) * | 2021-08-31 | 2023-03-09 | 清华大学 | Rotating air bearing assembly and magnetic fluid seal comprising same |
Also Published As
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|---|---|
| CN103016531B (en) | 2015-02-25 |
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Address after: Hangzhou City, Zhejiang province 310014 City Zhaohui District Six Patentee after: Zhejiang University of Technology Address before: 310014 Chao Wang Road, Xiacheng City, Hangzhou, Zhejiang Province, No. 18 Patentee before: Zhejiang University of Technology |
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Effective date of registration: 20181220 Address after: 401120 Yubei District, Chongqing, Longxi street, Hong Jin Avenue 498, Jiale, Violet 1, 5- business. Patentee after: Chongqing Kai Tuo development in science and technology company limited Address before: Hangzhou City, Zhejiang province 310014 City Zhaohui District Six Patentee before: Zhejiang University of Technology |
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Effective date of registration: 20201127 Address after: No. ZC030, College Students Pioneer Park, Tongling City, Anhui Province, 244000 Patentee after: TONGLING HUIHENG ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 401120 Jiale Ziguang Building 5-Business, 498 Hongjin Avenue, Longxi Street, Yubei District, Chongqing Patentee before: CHONGQING KAITUO TECHNOLOGY DEVELOPMENT Co.,Ltd. |