CN2289204Y - Automatic laser vertical instrument - Google Patents
Automatic laser vertical instrument Download PDFInfo
- Publication number
- CN2289204Y CN2289204Y CN 97203226 CN97203226U CN2289204Y CN 2289204 Y CN2289204 Y CN 2289204Y CN 97203226 CN97203226 CN 97203226 CN 97203226 U CN97203226 U CN 97203226U CN 2289204 Y CN2289204 Y CN 2289204Y
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- laser
- instrument
- vertical
- vertical instrument
- automatic laser
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Abstract
The utility model discloses an automatic laser vertical instrument, which comprises laser sources (31 and 6), a collimator type beam expander (7), a top rack (5) with two degrees of freedom, and a damper (12). The utility model is characterized in that the lower part of the laser vertical instrument (1) is provided with ground point centering mechanisms (31', 17, 18, 19, 20 and 6) and compensation angle over-tolerance warning devices (9, 10, 11). A triangular base (2) is provided with a self checking ring (47); the top part of the automatic laser vertical instrument is provided with an angle error corrective appliance (3) with double optical wedges, and a variable diameter light diaphragm (4); a right angle reflector (21) and/ or a scanner (26) are installed above the automatic laser vertical instrument. The light outlet direction of the reflector (21) can be calibrated by the optical wedges (23), and the vertical degree of the scanner (26) can be adjusted by adjusting mechanisms (32, 35 and 36).
Description
The utility model relates to the vertical instrument of automatic laser, or rather, relate to a kind of ground point centering body that comprises, systematic error is eliminated mechanism, the overproof warning device of offset angle, two wedge angular error rectifiers, but reducing diaphragm, the right angle reflector that has correction wedge, and the vertical instrument of multi-functional automatic laser that has the verticality adjusting mechanism, can provide automatic perpendicular laser beam, the automatic horizontal laser beam, the automatic horizontal laser plane, automatic vertical laser plane, automatically the arbitrary angle laser beam and the laser circular conical surface of arbitrary angle automatically are widely used in various engineering construction and installation exercise.
The vertical instrument of existing automatic laser, the centering of its ground reference point is not to use plumb bob just to be to use conventional optical plummet, yet the former is subject to external interference, the latter is then owing to be installed in the tribrach, its with main laser Shu Fangxiang be difficult to accomplish coaxial, so in the instrument use, often bring than mistake.In addition, the vertical instrument of existing automatic laser, the vertical error amount of its outgoing laser beam is unsettled, this be owing to use and transportation in can cause laser instrument and suspend that relative position generation slight change makes it depart from desirable vertical direction between the device structural member by factors such as environment temperature and vibration interference, be so-called systematic error, and the vertical instrument of existing automatic laser there is no the corresponding means of eliminating this systematic error.The 3rd, the vertical instrument of existing automatic laser all has a given automatic compensation range, and by the circular bubble indication, the bubble of this circular bubble was placed in the middle when it was in running order.But when the influence of operating environments such as vibration, impact makes round bubble off-center, known to but having no away from the staff of instrument operation, thereby have influence on out six kinds of benchmark that TOUYIJIE mentions and lose benchmark, cause instrument under abnomal condition, to be worked and make construction operation serious mistake occur.The 4th, atmospheric interference brings difficulty often for the interpretation at laser facula center, and the interpretation precision when causing the meteorological condition difference descends significantly, brings reading error.The 5th, be installed in the right angle reflector and the scanner of the vertical instrument of automatic laser top, it also exists 90 ° of angle turnover errors in process of production, thereby the light direction that causes right angle reflector departs from 90 °, and scanner laser (level and the vertical) plane and the incident beam out of plumb error that scan out.The problem that all these often occur in instrument production and use, if can not provide suitable control measures to be overcome in its course of work, then this instrument will provide wrong benchmark and construction is misled and brings about great losses.
Therefore, the purpose of this utility model is to provide a kind of multi-functional automatic laser vertical instrument, it comprises ground reference point centering body, systematic error reducing mechanism, the overproof warning device of offset angle and laser facula adjusting gear, when remedying the existing vertical instrument ground point of automatic laser centering defective, can instrument debug and use in reduce its systematic error in real time and improve its hot spot interpretation precision.
Another purpose of the present utility model is to provide a kind of multi-functional automatic laser vertical instrument, right angle reflector and the scanner that install on its top, not only can provide the laser beam, automatic horizontal of automatic horizontal and vertical laser plane and the arbitrary angle laser beam and the laser circular conical surface of drift angle arbitrarily automatically automatically, and its level, direction and precision vertical and any inclination angle can be adjusted in real time.
The purpose of this utility model is to realize like this.
According to the vertical instrument of multi-functional automatic laser of the present utility model, include LASER Light Source, the beam expander of parallel light tube form, binary gyro frame and damper, be installed in the tribrach, power by power supply, so that vertical laser beam automatically to be provided, it is characterized in that: when adopting semiconductor laser to make light source, the below of this semiconductor laser leans against and is coaxially installed with second semiconductor laser privately, and a pair of wedge angular error rectifier is installed in its bottom, by adjusting two coupling angles between the wedge, adjust to coaxial but direction is opposite with light direction that will back one laser instrument with main laser, thereby be used to carry out ground reference point centering, to substitute plumb bob and the optical plummet that uses in the prior art.But when adopting the He-Ne laser instrument to make light source, above-mentioned second semiconductor laser then substituted by the tail light that this He-Ne laser instrument sends, its light direction is to adjust to this He-Ne laser coaxial but direction is opposite by two wedge angular error rectifiers that install its bottom equally, to be used for carrying out ground reference point centering.
According to the vertical instrument of multi-functional automatic laser of the present utility model, its mechanism that reduces systematic error has two, can use one of them or both to use simultaneously respectively.One; at tribrach the self-correcting ring is installed; comprise laser instrument; beam expander; the gyro frame; damper and ground point centralising device etc. are in interior whole instrument main body; be installed in the lower house of this instrument; lower house then can turn round in the self-correcting ring together with this apparatus subject; so when doing 360 ° of rotations in the self-correcting ring of lower house in tribrach; vertical laser beam is because the existence of systematic error will be at the target upper drawing circle; find out its tram according to this radius of a circle and distance; and by the rotation lower house make laser beam aim at this position, just can reduce its systematic error or improve its vertical precision.Its two, the top of the vertical instrument of automatic laser is equipped with two wedge angular error correctors, by changing the direction that coupling angle between two wedges changes outgoing beam, the systematic error of this perpendicular laser beam is corrected or reduce.
According to the vertical instrument of multi-functional automatic laser of the present utility model, its bottom is equipped with the overproof warning device of offset angle, when its perpendicular laser beam exceeds given automatic compensation range, make the web member conducting and drive alarm and carry out sound and/or light alarm, and cut off the power supply of laser instrument, must adjust the state of the vertical instrument of this automatic laser with the prompting people in good time, for example circular bubble is placed in the middle by adjusting foot screw.
According to the vertical instrument of multi-functional automatic laser of the present utility model, but its top is equipped with the reducing diaphragm, can use the interpretation precision that improves instrument according to the spot size of operation distance and meteorological condition changing circular hole diffraction laser.
According to second aspect of the present utility model, the top of the vertical instrument of this automatic laser is equipped with right angle reflector, and rotatable wedge is installed on the light-emitting window of described right angle reflector, is used to the direction of its horizontal laser beam that provides is calibrated.
The vertical instrument of multi-functional automatic laser according to the utility model second aspect, it directly is installed on the scanner of automatic laser vertical instrument top or the process right angle reflector side of being mounted thereon, comprise the pentagonal prism or the right-angle prism that make 90 ° of angles of beam deflection, it rotates around an axis by motor-driven.And this scanner further comprises a verticality adjusting mechanism, its this rotation is adjusted with respect to the verticality of scanner supporting base, thereby made its laser plane that scans out vertical with incoming laser beam or angled.
Said structure of the present utility model and advantage that is provided and characteristics will become clear more and clear by the specific embodiment that elaborates below in conjunction with accompanying drawing.Yet the utility model is not limited thereto embodiment, and is the protection domain that connotation that it discloses and claims limit, wherein
Fig. 1 is the vertical instrument structure principle chart of multi-functional automatic laser of the present utility model, and vertical laser beam L automatically can be provided;
Fig. 2 is placed on the vertical instrument of this automatic laser so that the structure principle chart of automatic horizontal laser beam H to be provided for right angle reflector;
Fig. 3 is placed on the vertical instrument of this automatic laser so that the structure principle chart of automatic horizontal laser plane to be provided for scanner;
Fig. 4 is the vertical instrument partial sectional view of multi-functional automatic laser of the present utility model, in order to the structure of expression offset angle overproof warning device, and the centering body setting of ground reference point when using semiconductor laser to make light source;
Fig. 5 is an of the present utility model pair of wedge angular error rectifier structure principle chart;
Fig. 6 for the utility model when using the He-Ne laser instrument to make light source, it utilizes the tail light alternative semiconductors laser instrument of this laser instrument and constitutes the ground reference point centering body with two wedge angular error rectifiers;
Fig. 7 represents the scanner structure that uses in the utility model, and the scanner main body of its fixed prism can pass through verticality adjusting mechanism (Fig. 8 and 9), adjusts the vertical relation between turning axle and the scanner supporting base;
Fig. 8 is a scanner top view shown in Figure 7, and expression is by the verticality adjusting mechanism installation site of three link supports;
Fig. 9 is the adjusting mechanism that amplifies along arrow A direction broken section among Fig. 8;
Structural drawing when Figure 10 eliminates systematic error for adopting the self-correcting ring
Referring to Fig. 1, main part of the present utility model is the vertical instrument 1 of illustrated automatic laser (upper shell among the figure is simplified), as shown in the figure, the core of the vertical instrument 1 of this automatic laser is the laser collimation system of being made up of the beam expanding lens 7 of laser instrument 31 (being semiconductor laser among the figure) and parallel light tube form, be suspended at inner sleeve 43 (referring to Fig. 4) neutralization by resultant field 12 generation dampings by power supply 8 power supplies and by binary gyro frame 5, using provides vertical laser beam automatically.But the top of the vertical instrument 1 of this automatic laser is equipped with two wedge angular error rectifiers 3 and reducing diaphragm 4, and the former comprises wedge 13 and glazing wedge block 14 and following wedge 15 and following wedge seat 16, and the latter comprises the iris or the plurality of fixed diaphragm of continuous reducing.The below of the vertical instrument 1 of this automatic laser is equipped with overproof alarm mechanism of offset angle and ground reference point centering body, the former is made up of the elastic caoutchouc 9 with conductive capability, conducting ring 10 and alarm 11, in the time of sound and/or light warning, can the cut off the electricity supply power supply of 8 pairs of laser instruments 31 is so that instrument quits work; The latter then by with laser instrument 31 second half conductor laser 31 of coaxial arrangement ' provide laser beam back-to-back, and carry out directive ground, coaxial correction back by angular error rectifier (comprising upper and lower wedge 17,19 and upper and lower wedge seat 18,20 equally).The vertical instrument 1 of automatic laser with above-mentioned globality structure is installed in the tribrach (2) through the lower house 40 among Fig. 4, and the center of its tribrach (2) is equipped with self-correcting ring (47), and circular bubble (48) is equipped with in pedestal (2) top.
Referring to Fig. 2, right angle reflector 21 wherein is made up of the reflecting prism that makes 90 ° of angles of optical axis deflection, it shown in the figure pentagonal prism 22, be installed in the lens barrel 44 and be fixed in the top of the vertical instrument 1 of automatic laser by bindiny mechanism 24, make the fine motion of laser beam along continuous straight runs and sight by micromotion mechanism 25, so that the horizontal laser beam H of any direction to be provided.Wedge mirror 23 is installed in light-emitting window the place ahead of lens barrel 44, with eliminate cause because of prism 22 processing and alignment error with use in the laser beam lateral error that produces.
Referring to Fig. 3, scanner 26 wherein comprises the reflecting prism (being pentagonal prism 27 herein) that makes 90 ° of angles of optical axis deflection, fixing and rotating mechanism 45, direct current motor 28, speed-regulating potentiometer 30 and circular bubble 29, be installed in the main body 34, it is with respect to the direction that is installed in the vertical instrument 1 of automatic laser or is installed in the scanner supporting base 33 on the right angle reflector 21, can pass through verticality adjusting mechanism (35,36,32) adjust.
Referring to Fig. 4, wherein semiconductor laser 31 and collimator and extender device 7 are suspended in the inner sleeve 43 by suspension body 42.43 of inner sleeves insulate by dead ring pad 41 and are linked to each other with lower house 40 by trip bolt 46, and the upper shell (not shown) then is directly installed on the lower house 40 and constitutes the vertical instrument 1 of automatic laser to carry out the globality encapsulation.As shown in the figure, the periphery of suspension body 42 bottoms is equipped with the flexible rubber ring 9 of tool conductive capability, this flexible rubber ring 9 contacts with the inwall of lower house 40 when offset angle is overproof, and conducting audible-visual annunciator 11 (referring to Fig. 1 and 6) report to the police and cut off Laser Power Devices 8 when producing cushioning effect.
The ground reference point centering body of Fig. 4 below, comprise with the coaxial mounted back-to-back semiconductor laser 31 of main laser 31 ', go up and wedge 17 down, 19 and last and following wedge seat 18,20, by adjusting the coupling angle of upper and lower wedge 17,19, with laser instrument 31 ' light direction be adjusted to consistent with the laser vertical instrument main beam.
Referring to Fig. 5, it is installed in last wedge 13 in the glazing wedge block 14 to be depicted as two wedge angular error rectifiers, can be with respect to 15 rotations of following wedge and the coupling that are installed in down in the wedge seat 16, and can make its relative fixed, and be connected with the vertical instrument 1 of automatic laser through basic part 37 by stop screw 38 and 39.
Referring to Fig. 6, be depicted as the vertical instrument 1 of automatic laser that uses He-Ne laser instrument 6 to make light source, among the figure all with earlier figures in identical numbering all refer to the part identical with it, repeat no more.The difference of itself and Fig. 1 and 4 only be to have saved second semiconductor laser 31 ', and substitute with the tail light of its He-Ne laser instrument 6.
Referring to Fig. 7-9, the structure of scanner shown in the figure 26, its most of part mentions in narration Fig. 3 that all no longer repeat, pentagonal prism is not only herein represented during scanner 26.Fig. 8 and 9 structures that provide a kind of three connecting rod verticality adjusting mechanisms, it comprises 120 ° of equally distributed three double threaded screws 36, (for for simplicity, not drawing three-link mechanism among Fig. 7) connects together main body 34 and supporting base 33 respectively.The two ends of screw rod 36 are fixed by nut 35 parts such as grade respectively, fastening length by this screw rod 36 of setting nut 32 rotations the change, thereby the relative length that changes three screw rods (36) to be realizing above-mentioned verticality adjustment, and then realizes the verticality adjustment to laser plane and incoming laser beam.
Referring to Figure 10, shown in the figure concrete structure when adopting self-correcting ring 47 to reduce the instrument system error.As shown in the figure, comprise that the whole instrument main body of laser instrument, beam expander, gyro frame, damper and ground point centralising device etc. all is installed in the instrument lower house 40, lower house 40 can turn round in the self-correcting ring 47 in being fixed in tribrach 2.So when lower house 40 is done 360 ° of revolutions in self-correcting ring 47,, but draw circle around a certain position because its perpendicular laser beam of existence of instrument system error does not drop on same position on target.Just can find out systematic error hot spot tram hour according to this radius of a circle and distance, so just can realize the installation adjustment of this vertical instrument according to its position, to reduce systematic error or its service precision is improved, by arrestment mechanism 49 it is braked in tribrach 2 subsequently.
In sum, the vertical instrument of multi-functional automatic laser of the present utility model, owing to aspect above five, adopt seven kinds of different means to make a big improvement, so its six kinds of benchmark that provide are the precision height not only, instrumental function is complete, and in use can adjust and improve its service precision in real time, and can monitor its behaviour in service at any time by warning device, adjusted in good time, thereby can abandon the many disadvantages of prior art and provide a kind of comparatively desirable vertical instrument of multi-functional automatic laser for society and the public.
Claims (17)
1. vertical instrument of multi-functional automatic laser, comprise LASER Light Source (31), the beam expander of parallel light tube form (7), binary gyro frame (5) and damper (12), be installed in the tribrach (2), power by power supply (8), so that vertical laser beam (L) automatically to be provided, it is characterized in that: when LASER Light Source (31) is semiconductor laser, the below of this laser instrument (31) leans against and is coaxially installed with second semiconductor laser (31 ') privately, and a pair of wedge angular error rectifier (17 is installed in its bottom, 18,19,20), by adjusting two wedges (17,19) the coupling angle between, adjust to main laser (31) is coaxial but direction is opposite with light direction that will back one laser instrument (31 '), thereby be used to carry out ground reference point centering, with plumb bob and the optical plummet that uses in the alternative prior art.
2. according to the vertical instrument of multi-functional automatic laser of claim 1, it is characterized in that: when above-mentioned LASER Light Source (31) is He-Ne laser instrument (6), back semiconductor laser instrument (31 ') is then substituted by the tail light that this He-Ne laser instrument (6) sends, its light direction is two wedge angular error rectifiers (17 of installing by its bottom equally, 18,19,20) adjust to this He-Ne laser coaxial but direction is opposite, to be used for carrying out ground reference point centering.
3. according to the vertical instrument of multi-functional automatic laser of claim 1 or 2; it is characterized in that: self-correcting ring (47) is installed in the tribrach (2); lower house (40) is connected with tribrach (2) by this self-correcting ring (47) as the supporting body of whole instrument; its relative this self-correcting ring (47) revolution is carried out self calibration with the vertical direction to its laser beam, uses the raising precision.
4. according to the vertical instrument of multi-functional automatic laser of claim 1 or 2, it is characterized in that: its bottom is equipped with the overproof warning device (9 of offset angle, 10,11), when its perpendicular laser beam departs from vertical direction and exceeds given automatic compensation range, make part (9 and 10) conducting and drive alarm (11) and carry out sound and/or light alarm, and cut off laser instrument (31,31 ', 6) power supply, with the prompting people must adjust the state of the vertical instrument of this automatic laser (1) in good time.
5. according to the vertical instrument of multi-functional automatic laser of claim 1 or 2, it is characterized in that: the top of the vertical instrument of automatic laser (1) is equipped with two wedge angular error rectifiers (3), proofreaies and correct with the direction to the perpendicular laser beam (L) of its outgoing.
6. according to the vertical instrument of multi-functional automatic laser of claim 1 or 2, it is characterized in that: the vertical instrument of automatic laser (1) but the top reducing diaphragm (4) is installed, can use the precision that improves interpretation according to the spot size of operation distance and its circular hole diffraction laser of meteorological condition changing.
7. according to the vertical instrument of multi-functional automatic laser of claim 3 or 4, it is characterized in that: the top of the vertical instrument of automatic laser (1) is equipped with two wedge angular error rectifiers (3), proofreaies and correct with the direction to the perpendicular laser beam (L) of its outgoing.
8. according to the vertical instrument of multi-functional automatic laser of claim 3 or 4, it is characterized in that: the vertical instrument of automatic laser (1) but the top reducing diaphragm (4) is installed, can use the precision that improves interpretation according to operation apart from the spot size that changes its circular hole diffraction laser.
9. according to the vertical instrument of multi-functional automatic laser of claim 3, it is characterized in that: its bottom is equipped with the overproof warning device (9 of offset angle, 10,11), exceed and give when deciding scope, make part (9 and 10) conducting and drive alarm (11) and carry out sound and/or light alarm when its perpendicular laser beam departs from vertical direction, and cut off laser instrument (31,31 ', 6) power supply, with the prompting people must adjust the state of the vertical instrument of this automatic laser (1) in good time.
10. according to the vertical instrument of multi-functional automatic laser of claim 5, it is characterized in that: the vertical instrument of automatic laser (1) but the top reducing diaphragm (4) is installed, can use the precision that improves interpretation according to operation apart from the spot size that changes its circular hole diffraction laser.
11. the vertical instrument of multi-functional automatic laser according to claim 9 is characterized in that: the top of the vertical instrument of automatic laser (1) is equipped with two wedge angular error rectifiers (3), so that the direction of the perpendicular laser beam (L) of its outgoing is proofreaied and correct.
12. the vertical instrument of multi-functional automatic laser according to claim 9, it is characterized in that: the vertical instrument of automatic laser (1) but the top reducing diaphragm (4) is installed, can use the precision that improves interpretation according to operation apart from the spot size that changes its circular hole diffraction laser.
13. the vertical instrument of multi-functional automatic laser according to claim 7, it is characterized in that: the vertical instrument of automatic laser (1) but the top reducing diaphragm (4) is installed, can use the precision that improves interpretation according to operation apart from the spot size that changes its circular hole diffraction laser.
14. the vertical instrument of multi-functional automatic laser according to claim 11, it is characterized in that: the vertical instrument of automatic laser (1) but the top reducing diaphragm (4) is installed, can use the precision that improves interpretation according to operation apart from the spot size that changes its circle optical diffraction laser.
15. the vertical instrument of multi-functional automatic laser according to arbitrary claim in the claim 1 to 14, it is characterized in that: the top of the vertical instrument of automatic laser (1) is equipped with right angle reflector (21), and rotatable wedge (23) is housed on the light-emitting window of this right angle reflector (21), calibrates with the direction of horizontal laser beam (H) that it is provided.
16. the vertical instrument of multi-functional automatic laser according to arbitrary claim in the claim 1 to 14, it is characterized in that: be directly installed on the vertical instrument of automatic laser (1) top or be installed in scanner (26) on this laser vertical instrument (1) through right angle reflector (21), comprise the pentagonal prism or the right-angle prism (27) that make 90 ° of angles of beam deflection, drive it by motor (28) and rotate around axis (O-O); And this scanner (26) further comprises a verticality adjusting mechanism (32,35,36), with to this rotation (O-O) relatively the verticality of its supporting base (33) adjust.
17. the vertical instrument of multi-functional automatic laser according to claim 15, it is characterized in that: be directly installed on the vertical instrument of automatic laser (1) top or be installed in scanner (26) on this laser vertical instrument (1) through right angle reflector (21), comprise the pentagonal prism or the right-angle prism (27) that make 90 ° of angles of beam deflection, drive it by motor (28) and rotate around axis (O-O); And this scanner (26) further comprises a verticality adjusting mechanism (32,35,36), with to this rotation (O-O) relatively the verticality of its supporting base adjust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97203226 CN2289204Y (en) | 1997-04-21 | 1997-04-21 | Automatic laser vertical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97203226 CN2289204Y (en) | 1997-04-21 | 1997-04-21 | Automatic laser vertical instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2289204Y true CN2289204Y (en) | 1998-08-26 |
Family
ID=33924148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97203226 Expired - Lifetime CN2289204Y (en) | 1997-04-21 | 1997-04-21 | Automatic laser vertical instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2289204Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101163942B (en) * | 2005-05-10 | 2012-02-29 | 天宝导航有限公司 | Method and apparatus for optical correction of a laser beam |
| CN105423957A (en) * | 2015-11-17 | 2016-03-23 | 中国科学院长春光学精密机械与物理研究所 | Rotation shaft rotation angle measuring method restraining shafting dip angle rotation error |
| CN106989698A (en) * | 2017-04-12 | 2017-07-28 | 北京空间飞行器总体设计部 | A kind of portable high-accuracy coaxality measuring mechanism |
-
1997
- 1997-04-21 CN CN 97203226 patent/CN2289204Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101163942B (en) * | 2005-05-10 | 2012-02-29 | 天宝导航有限公司 | Method and apparatus for optical correction of a laser beam |
| CN105423957A (en) * | 2015-11-17 | 2016-03-23 | 中国科学院长春光学精密机械与物理研究所 | Rotation shaft rotation angle measuring method restraining shafting dip angle rotation error |
| CN105423957B (en) * | 2015-11-17 | 2017-12-26 | 中国科学院长春光学精密机械与物理研究所 | A kind of measuring method for the shaft rotary corner for suppressing angle of shafting declivity turn error |
| CN106989698A (en) * | 2017-04-12 | 2017-07-28 | 北京空间飞行器总体设计部 | A kind of portable high-accuracy coaxality measuring mechanism |
| CN106989698B (en) * | 2017-04-12 | 2019-04-09 | 北京空间飞行器总体设计部 | A kind of portable high-accuracy coaxality measuring mechanism |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |