CN102162910A - Permanent magnetic suspension support shafting structure suitable for Antarctic astronomical telescope - Google Patents
Permanent magnetic suspension support shafting structure suitable for Antarctic astronomical telescope Download PDFInfo
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Abstract
A permanent magnetic suspension support shafting structure is characterized in that a radial load bearing and an axial location bearing are arranged on a height shaft; a support shafting structure of an azimuth shaft is arranged between a rotor and a telescope base of an azimuth shaft system; the radial load bearing of the height shaft adopts a permanent magnetic suspension bearing; the permanent magnetic repulsion force between the moving ring of the bearing and a fixed magnetic plate counteracts the weight of the tube of the telescope; the axial location bearing of the height shaft is located by a Si3N4 ceramic bearing; a non-load location bearing of the azimuth shaft is supported by a Si3N4 ceramic bearing; a load location bearing of the azimuth is supported by a permanent magnetic axial bearing; and the permanent magnetic force generated between the moving magnetic ring and the fixed magnetic ring of the permanent magnetic axial bearing counteracts the weight of the telescope. The permanent magnetic suspension support shafting structure solves the problems of mechanical bearing of the Antarctic astronomical telescope, such as bearing lubrication, thermal expansion and contraction, low-speed crawling under heavy loads and the incapability of using the liquid hydrostatic bearing, thereby creating the conditions for high-accuracy tracking and large-diameter development of the Antarctic astronomical telescope.
Description
Technical field
The present invention relates to a kind of South Pole altitude azimuth form astronomical telescope main shaft magnetic suspension bearing structure that is applicable to.The altazimuth telescope main shaft is often referred to telescopical azimuth axis and altitude axis, as shown in Figure 1.The azimuth axis 5 vertical zeniths that point to, whole telescope is around azimuth axis 5 rotations.Telescope lens barrel 1 is bearing on the yoke 3 by altitude axis 2, and lens barrel rotates around altitude axis.Altitude axis and azimuth axis perpendicular quadrature, the rotation by azimuth axis and altitude axis just can realize the tracking observation of telescope to celestial body in the sky.
The block bearing that main shaft is commonly used on the astronomical telescope has mechanical bearing and hydrodynamic journal liquid polymers, and when being supported load when big, the static friction torque of mechanical bearing and dynamic friction torque differ bigger, cause the critical velocity of creeping of support shaft to become big thus.And the travelling speed of astronomical telescope is very low.When critical creep speed during greater than the required tracking travelling speed of telescope, " creeping " phenomenon will appear in support shaft, influences telescopical tracking accuracy and observing capacity.And the friction factor of hydrodynamic journal liquid polymers has only 1/10th of mechanical bearing, can reduce the critical creep speed of axle system greatly, makes telescope can be operated in low speed, Ultra-Low Speed state.On the other hand, the diameter of mechanical bearing is subject to processing the restriction of lathe, and that the diameter of hydrodynamic journal liquid polymers can be done is very big, so, in, the hydrodynamic journal liquid polymers supporting commonly used of large telescope main shaft.
The data of South Pole scientific investigation show: the Antarctic region atmosphere is thin, cold, dry, dust is few, and wind speed is little, atmospheric turbulence is few, seeing is good, the more important thing is the continuous astronomical sight (polar night) that can reach the several months in the Antarctic region, and ambient light contamination is few.These characteristics make that the astronomical observation condition in the South Pole is that other are local incomparable on the earth.So astronomical in the world boundary is all greatly developing South Pole astronomy, China has also begun relevant astronomical research at the Dome in South Pole A.But the minimum temperature in the South Pole reaches-89 ° of C, and under such condition of ultralow temperature, hydrodynamic journal liquid polymers commonly used on the telescope can't be worked, because, the present hydraulic oil that also is not applicable to such low temperature.The use of mechanical bearing is also had any problem, because the geographic latitude in the South Pole is higher, telescopical tracking velocity is very low, the observation sky district tracking velocity that has has only 0.5, and "/s; so extremely hanging down under the travelling speed, add the influence that bearing and lubricant grease are subjected to ultralow temperature, make bearing under the effect of telescope weight; " creeping " phenomenon very easily occurs has influenced telescopical tracking performance and the further raising that has limited the telescope tracking accuracy.
In order to solve above problem, patent of the present invention has proposed a kind of telescopical bearing support structure in the South Pole that is applicable to.The bearing (as the cod of azimuth axis among Fig. 1 and the transverse bearing of altitude axis) that is load-bearing adopts permanent magnet expulsive force suspension supporting, do not contact between moving-coil and the fixed circle, the gap that 2 millimeter are arranged, so just can there be the low speed jerking motion phenomenon that causes because of dynamic and static moment of friction, nor need to lubricate, avoided the problem of bringing because of railway grease.The bearing that not load-bearing only plays the role of positioning (as the transverse bearing of azimuth axis among Fig. 1 and the cod of altitude axis) because load is very little, does not have the low speed problem of " creeping ", so, select the silicon nitride ceramics bearing of low-expansion coefficient, low temperature resistant, self-lubricating for use.
Background technology
Because the special environment in the South Pole makes it become the best astronomical sight place of generally acknowledging on the earth.The U.S., Europe, Australia, Japan and other countries have successively been installed astronomical sight equipment in the South Pole, be the IRAIT infrared telescope of 0.8 meter bore of master, the AIRT40 optical telescope of 0.4 meter bore of Japan etc. as Italy.The Shou Tai South Pole optical telescope CSTAR of China's development has also successfully installed in China at South Pole Dome A in 2008, CSTAR is that the Large Area Telescope by 4 0.145 meter bores is contained in the opera glass battle array that constitutes on the same frame, mainly carry out variable monitoring and statistical study, searching is astronomical observations such as outer planet, supernova.For fear of ultralow temperature problem that causes and the risk that reduces the CSTAR project, the telescopical axle of CSTAR system is actionless.All the other existing South Pole telescope main shafts all adopt the mechanical bearing supporting.But, the block bearing of main shaft has been taked following measure for telescope is rotated:
1.. block bearing is adopted the ultralow temperature grease lubrication, and as the Fomblin@zlht railway grease of Italian Solvay Solexis company, this railway grease costs an arm and a leg, and the per kilogram price is about 40,000 yuans.And under the low-speed running situation, lubricant effect is not fine.
2.. to all rotatable parts, as bearing, driven wheel, motor etc., heat with the hot-air about 20 ℃, hot-air is from controlling indoor pipeline transportation.
More than two kinds of methods are present South Pole telescope working environments at ultralow temperature, to the major measure that block bearing adopted.These measures all are restricted in telescope cost, South Pole energy supply, large telescope development.
According to the data of South Pole scientific investigation, the South Pole is astronomical sight place best on the earth.Small-sized astronomical sight equipment has been installed by existing in the world at present a plurality of countries in the South Pole, be the IRAIT infrared telescope of 0.8 meter bore of master, the AIRT40 optical telescope of 0.4 meter bore of Japan etc. as Italy.0.145 meter of bore has also been installed in 2008 by China at South Pole Dome A CSTAR telescope battle array.Because the environment temperature in the South Pole is extremely low, and traditional astronomical telescope main shaft supporting bearing (mechanical bearing, hydrodynamic journal liquid polymers) has been proposed serious challenge.The technical matters that above-mentioned prior art does not have to solve has:
1. mechanical bearing in use needs grease lubrication.Reach subzero 89 ° and the temperature in the South Pole is minimum, have only minority railway grease can use at present, as the Fomblin@zlht railway grease of Italian Solvay Solexis company in like this low temperature environment.But these special railway grease prices are all very expensive.And when slow running and ultralow temperature double requirements, greasy property is not fine.
2. mechanical bearing is under the environment of South Pole ultralow temperature, the greasy property of railway grease and mechanical bearing size are affected, and the friction factor of mechanical bearing relatively large (comparing) with hydrostatic bearing, make bearing under the effect of telescope own wt, the difference of dynamic friction torque and static friction torque is bigger, cause the critical velocity that telescope can even running to become big, the critical velocity that low speed " creeps " does not promptly take place become big.And owing to higher (80 ° 22 ' S) of South Pole geographic latitude, telescopical travelling speed is very low, the observation sky district tracking velocity that has has only 0.5 "/s; the travelling speed that requires when telescope is near or below block bearing when the critical velocity of " creeping " phenomenon does not take place; support shaft is when operation; " creeping " phenomenon will take place, thereby influenced telescopical tracking accuracy.This problem has also limited the further increase of South Pole telescope bore simultaneously, because the telescope bore is big more, then the weight of bearing on the bearing is heavy more, weight is heavy more, the moment of friction of bearing is just big more, and then the difference of dynamic friction torque and static friction torque is just big more, and the critical velocity that low speed " is creeped " is just high more, is unfavorable for telescopical slow running.
3. in order to solve the bearing problem that above low temperature causes, present, the method that adopts usually on the existing telescope in the South Pole is: in the control room, by the hot-air of heat-insulating pipeline to 20 ℃ of telescopical block bearing conveyings.Very under the situation of difficult, this method is not a good method in South Pole energy supply.And this method may also be suitable for for present race glass, but along with the increase of telescope bore, can't deal with problems by this method merely at all.
The friction factor of hydrodynamic journal liquid polymers is about 1/10th of mechanical bearing, can reduce the critical velocity of " creeping " greatly.But also do not have to be operated in-89 ° hydraulic oil at present.
Summary of the invention
In order to solve the problems referred to above that prior art exists, the invention provides a kind of permanent magnetic levitation supporting shafting structure that is applicable to South Pole astronomical telescope.This structure adopts permanent magnet expulsive force to suspend and supports, do not contact between moving-coil and the fixed circle, the gap of 2 millimeter is arranged, so just can not exist because of the low speed that dynamic and static moment of friction the causes phenomenon of " creeping ", nor need to lubricate, avoided the problem of bringing because of railway grease.The bearing that not load-bearing only plays the role of positioning (as the transverse bearing of azimuth axis among Fig. 1 and the cod of altitude axis) because load is very little, does not have the low speed problem of " creeping ", so, select the silicon nitride ceramics bearing of low-expansion coefficient, low temperature resistant, self-lubricating for use.
The technical scheme of finishing the foregoing invention task is, a kind of permanent magnetic levitation supporting shafting structure that is applicable to South Pole astronomical telescope, the altitude axis of astronomical telescope supports telescopical whole lens barrel, and this altitude axis is provided with the radially load-bearing bearing of altitude axis and the axial location bearing of altitude axis; The orientation rotating disk of astronomical telescope is fixed on the centralized positioning axle by the elasticity web joint, and this orientation rotating disk, elasticity web joint and centralized positioning axle are linked to be an integral body, forms the rotor of azimuth axle; Lay the lens barrel of telescopical altitude axis and supporting thereof on the orientation rotating disk by yoke; Drive motor drives the azimuth axle rotor, realizes the orientation rotation thereby drive whole telescope; The bolster architecture of azimuth axis is arranged between the rotor and telescope support of described azimuth axle, it is characterized in that,
The radially load-bearing bearing of described altitude axis adopts the permanent magnetism magnetic suspension supporting, this radially the load-bearing bearing permanent magnetism magnetic suspension supporting by the bearing moving-coil and fixedly magnetic sheet form, the bearing moving-coil is to be spliced by the magnetic shoe that some normal direction magnetize, by the outer ring of screw retention, form rotor with the height axle journal at the height axle journal; Fixedly magnetic sheet by screw retention on bearing seat; This bearing moving-coil and the fixing weight of the permanent magnet expulsive force balance telescope lens barrel between magnetic sheet; The axial location bearing of described altitude axis adopts silicon nitride ceramics bearing location;
The bolster architecture of described azimuth axis is made up of the alignment bearing of non-bearing alignment bearing and load-bearing, and described non-bearing alignment bearing adopts low-expansion coefficient, silicon nitride ceramics bearing low temperature resistant, self-lubricating to support; The alignment bearing of described load-bearing adopts the supporting of permanent magnetism cod, and this permanent magnetism cod is by moving magnetosphere and decide magnetosphere and form, and this moving magnetosphere is by the bottom surface of screw retention in the orientation rotating disk; Should decide magnetosphere by the upper surface of screw retention at base; By the described moving magnetosphere and the telescopical weight of permanent magnet expulsive force balance of deciding to produce between the magnetosphere.
In other words, azimuth axle supporting structure of the present invention as shown in Figure 2, orientation rotating disk 4 is fixed on the centralized positioning axle 7 by elasticity web joint 6, this three is linked to be a whole rotor of forming azimuth axle.Lay the lens barrel of telescopical altitude axis and supporting thereof on the orientation rotating disk 4 by yoke 3.Drive motor 14 drives the azimuth axle rotor, realizes the orientation rotation thereby drive whole telescope.
Whole telescopical weight acts on the azimuth axle rotor along the Y-axis of coordinate system among Fig. 2, the permanent magnetism cod supporting below the orientation rotating disk.The permanent magnetism cod is by moving magnetosphere (moving-coil) 9 and decide magnetosphere (fixed circle) 10 and form, and moves magnetosphere 9 by the bottom surface of screw retention in orientation rotating disk 4, decides magnetosphere 10 by the upper surface of screw retention at base 11.By the telescopical weight of permanent magnet expulsive force balance of moving magnetosphere and deciding to produce between the magnetosphere.Moving magnetosphere and the distance of deciding between the magnetosphere can be calculated setting according to telescopical weight, generally in 2 millimeter.This gap can be adjusted by the adjustment parallels 12 below the base 11.The purpose of adjusting has two: the one, and in the telescope installation process, telescopical parts are up integrated one by one, promptly weight is little at first, and is more and more heavier.Therefore, require the supporting power of permanent magnetism cod also big from little change, this requirement can realize by the gap of adjusting the moving magnetosphere of parallels adjustment and decide between the magnetosphere; The 2nd, telescope in use, weight also may have a small amount of variation, at this moment also can be by adjusting the size that parallels changes the gap, to reach the purpose that changes permanent magnet expulsive force.
Fig. 3 and Fig. 4 are respectively that the permanent magnetism cod encloses the structural drawing with moving-coil surely.Consider the size of present magnet charger, the whole circle comparison difficulty that magnetizes, therefore, fixed circle and moving-coil all are spliced by the magnetic shoe 15,17 that the small size normal direction magnetizes.The splicing need of work is finished by specific purpose tool, because stronger repulsion magnetic force is all arranged between every fritter.After having spliced, every block of magnetic shoe is fixed on base 11 or the orientation rotating disk 4 with sunk screw 16,18.With tradition with glue fixedly magnetic shoe compare, be screwed herein, help later replacing, maintenance.
Altitude axis supports telescopical whole lens barrel (as shown in Figure 1), and Fig. 6-1,6-2 are lens barrel supporting structures on one side.Opposite with azimuth axis, altitude axis is born lens barrel weight in radially (Y direction among Fig. 6-1, the 6-2), and just plays the role of positioning at axially (directions X among Fig. 6-1, the 6-2).Therefore, radially the permanent magnetism magnetic suspension supporting is adopted in load-bearing, and axial location adopts silicon nitride ceramics bearing location.
Radially the load-bearing bearing by bearing moving-coil 21 and fixedly magnetic sheet 23 form, the bearing moving-coil is to be spliced by the magnetic shoe that some normal direction magnetize, by screw 22 be fixed on the height axle journal 20 the outer ring, form rotor with the height axle journal.Fixedly magnetic sheet 23 by screw retention on bearing seat 24.The bearing moving-coil and the fixing weight of the permanent magnet expulsive force balance telescope lens barrel between magnetic sheet.
The present invention adopts the permanent magnet expulsive force supporting in the load-bearing direction, and the non-bearing location adopts low-expansion coefficient, silicon nitride ceramics bearing low temperature resistant, self-lubricating to support.By this cover supporting structure, solved the problem that South Pole telescope mechanical bearing lubrication problem, the problem of expanding with heat and contract with cold, heavily loaded low speed jerking motion problem down and hydrodynamic journal liquid polymers can't use.For South Pole telescope has been created condition to high precision tracking and heavy caliber development.
Description of drawings
Fig. 1 is a telescope main shaft synoptic diagram, among the figure: lens barrel 1, altitude axis 2, yoke 3, orientation rotating disk 4, azimuth axis 5;
Fig. 2 is azimuth axis supporting structure figure, among the figure: orientation rotating disk 4, elasticity web joint 6, locating shaft 7, location ceramic bearing 8, yoke 3, cod moving-coil 9, cod enclose 10 surely, and base 11 is adjusted parallels 12, locating shaft bearing 13, drive motor 14;
Fig. 3 is for to decide coil structures figure, among the figure: base 11, permanent magnetic tile 15, gib screw 16;
Fig. 4 is the moving-coil structural drawing, orientation rotating disk 4 among the figure, permanent magnetic tile 17, gib screw 18;
Fig. 5 is for moving-coil and enclose the magnetic shoe corresponding diagram surely, among the figure: and moving-coil magnetic shoe 17, enclose magnetic shoe 15 surely;
Fig. 6-1, Fig. 6-2 is respectively altitude axis supporting structure figure, among the figure: telescope lens barrel 1, axial location ceramic bearing 19, altitude axis 20, transverse bearing moving-coil 21, moving-coil gib screw 22, transverse bearing are decided plate 23, bearing seat 24, yoke 3.
Embodiment
Embodiment 1, be applicable to the permanent magnetic levitation supporting shafting structure of South Pole astronomical telescope, with reference to Fig. 2: orientation rotating disk 4 is fixed on the centralized positioning axle 7 by elasticity web joint 6, and this orientation rotating disk 4, elasticity web joint 6 are linked to be an integral body with centralized positioning axle 7, form the rotor of azimuth axle; Lay the lens barrel of telescopical altitude axis and supporting thereof on the orientation rotating disk 4 by yoke 3; Drive motor 14 drives the azimuth axle rotor, realizes the orientation rotation thereby drive whole telescope; Described magnetic suspension bearing shafting structure is arranged between the rotor and telescope base 11 of described azimuth axle.The non-bearing alignment bearing adopts low-expansion coefficient, silicon nitride ceramics bearing 8 low temperature resistant, self-lubricating to support.The alignment bearing of load-bearing adopts the supporting of permanent magnetism cod, and this permanent magnetism cod is by moving magnetosphere (moving-coil) 9 and decide magnetosphere (deciding to enclose) 10 and form, and moving-coil is by the bottom surface of screw retention in orientation rotating disk 4; Fixed circle is by the upper surface of screw retention at base 11; By moving-coil 9 with enclose between 10 the telescopical weight of permanent magnet expulsive force balance that produces surely.By adjusting parallels 12, can adjust bearing moving-coil 9 and enclose gap between 10 surely.
In order to guarantee that in operational process the undulate quantity of magnetic repulsion is as far as possible little, the seam of moving-coil magnetic shoe can not be identical with the seam of enclosing magnetic shoe surely, certain angle that should stagger, and for example, 45 degree that stagger can not be parallel to each other.As shown in Figure 5.
Azimuth axle also needs the radial center location, as shown in Figure 2 except axially mounting.The radial center alignment bearing is considered as follows:
Radially (directions X among Fig. 2) is vertical with telescope gravity direction (Y direction among Fig. 2), so the telescope own wt is not radially having acting force.Acting force radially mainly comes from extraneous wind and carries, and shows that according to the data of the South Pole scientific investigation mean wind speed of China South Pole Dome A is 2 meter per seconds, and consequent wind carries smaller.Promptly use mechanical bearing, also can not produce the low speed problem of " creeping ".But select the less mechanical bearing of friction factor.
The temperature difference in the South Pole is bigger, and the thermal deformation of bearing is the smaller the better, and promptly the thermal expansivity of bearing material is smaller.
Do not need to use grease lubrication, promptly so-called self-oiling bearing.
According to above analysis, the silicon nitride ceramics bearing can satisfy above requirement.Silicon nitride ceramics bearing friction coefficient is less than bearing steel 30%, and thermal expansivity is less than bearing steel 20%, and hardness is 1 times of bearing steel, and resistance to compression is 5-7 a times of bearing steel.
The altitude axis supporting structure
Altitude axis supports telescopical whole lens barrel (as shown in Figure 1), and Fig. 6 is a lens barrel supporting structure on one side.Opposite with azimuth axis, altitude axis is born lens barrel weight in radially (Y direction among Fig. 6-1, the 6-2), and just plays the role of positioning at axially (directions X among Fig. 6-1, the 6-2).Therefore, radially the permanent magnetism magnetic suspension supporting is adopted in load-bearing, and axial location adopts silicon nitride ceramics bearing location.
Radially the load-bearing bearing by bearing moving-coil 21 and fixedly magnetic sheet 23 form, the bearing moving-coil is to be spliced by the magnetic shoe that some normal direction magnetize, by screw 22 be fixed on the height axle journal 20 the outer ring, form rotor with the height axle journal.Fixedly magnetic sheet 23 by screw retention on bearing seat 24.The bearing moving-coil and the fixing weight of the permanent magnet expulsive force balance telescope lens barrel between magnetic sheet.Because the space on the yoke 3 is limited, do not add the bearing moving-coil and the fixing adjusting mechanism in magnetic sheet gap herein.But, gap between the two can be adjusted by the method for grinding spacer thickness.In order to guarantee the altitude axis traveling comfort, transverse bearing permanent magnetism is decided the length of plate at least should be greater than the width of two moving-coil magnetic shoes.
It is identical that axial location adopts analysis and the azimuth axis of the silicon nitride ceramics bearing of low-expansion coefficient, low temperature resistant, self-lubricating to support, and no longer chela is stated.
Claims (6)
1. permanent magnetic levitation supporting shafting structure that is applicable to South Pole astronomical telescope, the altitude axis of astronomical telescope supports telescopical whole lens barrel, and this altitude axis is provided with the radially load-bearing bearing of altitude axis and the axial location bearing of altitude axis; The position rotating disk of astronomical telescope is fixed on the centralized positioning axle by the elasticity web joint, and this orientation rotating disk, elasticity web joint and centralized positioning axle are linked to be an integral body, form the rotor of azimuth axle; Lay the lens barrel of telescopical altitude axis and supporting thereof on the orientation rotating disk by yoke; Drive motor drives the azimuth axle rotor, realizes the orientation rotation thereby drive whole telescope; The bolster architecture of azimuth axis is arranged between the rotor and telescope support of described azimuth axle, it is characterized in that,
The radially load-bearing bearing of described altitude axis adopts the permanent magnetism magnetic suspension supporting, this radially the load-bearing bearing permanent magnetism magnetic suspension supporting by the bearing moving-coil and fixedly magnetic sheet form, the bearing moving-coil is to be spliced by the magnetic shoe that some normal direction magnetize, by the outer ring of screw retention, form rotor with the height axle journal at the height axle journal; Fixedly magnetic sheet by screw retention on bearing seat; This bearing moving-coil and the fixing weight of the permanent magnet expulsive force balance telescope lens barrel between magnetic sheet; The axial location bearing of described altitude axis adopts silicon nitride ceramics bearing location;
The bolster architecture of described azimuth axis is made up of the alignment bearing of non-bearing alignment bearing and load-bearing, and described non-bearing alignment bearing adopts low-expansion coefficient, silicon nitride ceramics bearing low temperature resistant, self-lubricating to support; The alignment bearing of described load-bearing adopts the supporting of permanent magnetism cod, and this permanent magnetism cod is by moving magnetosphere and decide magnetosphere and form, and this moving magnetosphere is by the bottom surface of screw retention in the orientation rotating disk; Should decide magnetosphere by the upper surface of screw retention at base; By the described moving magnetosphere and the telescopical weight of permanent magnet expulsive force balance of deciding to produce between the magnetosphere.
2. the permanent magnetic levitation supporting shafting structure that is applicable to South Pole astronomical telescope according to claim 1 is characterized in that, the moving-coil of described permanent magnetism cod and Ding Quan are spliced by the little magnetic shoe that some normal direction magnetize.
3. the permanent magnetic levitation supporting shafting structure that is applicable to South Pole astronomical telescope according to claim 2 is characterized in that, the moving magnetosphere of described permanent magnetism cod and the splicing seam of deciding the little magnetic shoe of magnetosphere certain angle that staggers each other.
4. according to claim 1 or the 2 or 3 described permanent magnetic levitation supporting shafting structures that are applicable to South Pole astronomical telescope, it is characterized in that the moving magnetosphere of described permanent magnetism cod and decide about 2 millimeters of gap between the magnetosphere.
5. the permanent magnetic levitation supporting shafting structure that is applicable to South Pole astronomical telescope according to claim 4 is characterized in that, is provided with the adjustment parallels below described telescope base.
6. the permanent magnetic levitation supporting shafting structure that is applicable to South Pole astronomical telescope according to claim 4 is characterized in that, the length that described transverse bearing is decided magnetic sheet is at least greater than the width of two little magnetic shoes of moving magnetosphere.
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| CN102979815A (en) * | 2012-11-30 | 2013-03-20 | 中国科学院国家天文台南京天文光学技术研究所 | Horizontal astronomical telescope spindle magnetic levitation support shaft system structure suitable for moon |
| CN103225669A (en) * | 2013-04-25 | 2013-07-31 | 江苏理工学院 | Permanent magnet bearing squeeze film dumper with elastic ring |
| CN103791001A (en) * | 2014-01-27 | 2014-05-14 | 中国科学院长春光学精密机械与物理研究所 | Mechanical brake for azimuth axis system |
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| CN102979815A (en) * | 2012-11-30 | 2013-03-20 | 中国科学院国家天文台南京天文光学技术研究所 | Horizontal astronomical telescope spindle magnetic levitation support shaft system structure suitable for moon |
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| RU2572218C9 (en) * | 2014-07-03 | 2016-06-10 | Российская Федерация, от имени которой выступает Министерство обороны Российской Федерации | Bearing and rotary device mainly for telescope |
| CN107367387A (en) * | 2016-05-13 | 2017-11-21 | 北京航天动力研究所 | The axial static friction testing device of ball bearing and elastic bearing under low temperature environment |
| CN107367387B (en) * | 2016-05-13 | 2023-08-22 | 北京航天动力研究所 | Axial static friction force testing device for ball bearing and elastic support in low-temperature environment |
| CN108594423A (en) * | 2017-09-06 | 2018-09-28 | 中国科学院国家天文台南京天文光学技术研究所 | Extremely large telescope azimuth axle supports and the flexible mobile system of precision actuation |
| CN108594423B (en) * | 2017-09-06 | 2020-06-09 | 中国科学院国家天文台南京天文光学技术研究所 | Flexible airborne system for supporting and precisely driving azimuth axis of ultra-large telescope |
| CN111051081A (en) * | 2017-09-26 | 2020-04-21 | 陈庸珏 | Suspension type bicycle hub combination structure |
| CN108127484A (en) * | 2017-11-29 | 2018-06-08 | 北京空间机电研究所 | A kind of mirror optics processing method being bonded using splicing ring and processing unit (plant) |
| CN108127484B (en) * | 2017-11-29 | 2019-09-06 | 北京空间机电研究所 | A kind of mirror optics processing method and processing unit (plant) using splicing ring bonding |
| WO2020062555A1 (en) * | 2018-09-30 | 2020-04-02 | 中国科学院国家天文台南京天文光学技术研究所 | Large south pole telescope azimuth axis support system |
| CN109375363A (en) * | 2018-09-30 | 2019-02-22 | 中国科学院国家天文台南京天文光学技术研究所 | The supporting system of large-scale South Pole telescope azimuth axis |
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| CN102162910B (en) | 2013-01-09 |
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