CN107727673A - A kind of heavy-loaded precision centering adjusting device for thick pinhole collimator - Google Patents
A kind of heavy-loaded precision centering adjusting device for thick pinhole collimator Download PDFInfo
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- CN107727673A CN107727673A CN201711095053.6A CN201711095053A CN107727673A CN 107727673 A CN107727673 A CN 107727673A CN 201711095053 A CN201711095053 A CN 201711095053A CN 107727673 A CN107727673 A CN 107727673A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a kind of heavy-loaded precision centering adjusting device for thick pinhole collimator, the front support of thick pinhole collimator is formed in described device after Y-axis governor motion I, Z axis governor motion I, the combination of plane ball-and-socket hinge device；The end support of thick pinhole collimator is formed after Y-axis governor motion II, Z axis governor motion II, afterbody wedge Mechanism Combination；Thick pinhole collimator front end is fixed on the center of plane ball-and-socket hinge device, and thick pinhole collimator tail end is connected with afterbody wedge mechanism.The present invention is combined by bevel gear, harmonic reduction and driving handwheel combination improve degree of regulation, realizes that later auto-lock function is completed in regulation；Afterbody wedge mechanism uses spherical support and upper holder block spring locking mechanism, avoids the drift of the hot spot in locking state.The present invention can realize that the relative position at collimating aperture center before the laser facula and imaging plate of thick pinhole collimator benchmark optical axis determines, can realize that the arcuate edge position in measurement imaging plate image can obtain field number.
Description
Technical field
The invention belongs to field of mechanical technique, and in particular to a kind of heavy-loaded precision centering for thick pinhole collimator is adjusted
Device.
Background technology
At present, thick pinhole imaging technology has the advantages of reflection source region image is directly perceived, accuracy is high, is widely used in neutron
Source, γ and the diagnosis of hard X ray source images, are related to nuclear explosion, pulsed reactor, thermonuclear fusion, nuclear medicine and environment core spoke
The research fields such as monitoring are penetrated, thick pinhole collimator is thick pinhole photography main element, and thick pinhole collimator governor motion is to realize
Thick pinhole collimator spatiality correct key member in place, it is necessary to the laser facula and imaging plate that pass through benchmark optical axis
The relative position at preceding collimating aperture center determines field of view center position, and then measures the arcuate edge position in imaging plate image
Obtain field number.In order to realize thick pin hole axis translation with collimating aperture relative position before imaging plate, it is necessary to thick pin-hole collimation
Device carries out any centering of spatiality, and current this heavy-loaded precision centering adjusting device has no report.
The content of the invention
It is an object of the invention to provide a kind of heavy-loaded precision centering adjusting device for thick pinhole collimator.
A kind of heavy-loaded precision centering adjusting device for thick pinhole collimator of the present invention, can realize thick pin-hole collimation
The relative position at collimating aperture center determines before the laser facula and imaging plate of device benchmark optical axis, can realize measurement imaging plate image
In arcuate edge position i.e. can obtain field number.
Technical scheme is as follows：
The heavy-loaded precision centering adjusting device of the thick pinhole collimator of the present invention, is characterized in, described heavy-loaded precision centering is adjusted
Regulating device governor motion containing Y-axis I, Y-axis governor motion II, Z axis governor motion I, Z axis governor motion II, plane ball-and-socket hinge device, tail
Wedge mechanism of portion, thick pinhole collimator and mounting base；Its annexation is that described Z axis governor motion I is located at Y-axis regulation
The surface of mechanism I；Described Z axis governor motion II is located at the surface of Y-axis governor motion II；Described plane ball-and-socket hinge device
Positioned at the surface of Z axis governor motion I；Described afterbody wedge mechanism is located at the surface of Z axis governor motion II.Described peace
Dress bottom plate fixes on the ground.Described Y-axis governor motion I, Z axis governor motion I, plane ball-and-socket hinge device combine to form thick pin hole
The front support of collimater.Described Y-axis governor motion II, Z axis governor motion II, afterbody wedge Mechanism Combination form thick pin hole
The end support of collimater.The front support and end support of described thick pinhole collimator are separately fixed at the two of mounting base
End, and Central Symmetry.Described thick pinhole collimator front end is fixed on the center of plane ball-and-socket hinge device, thick pinhole collimator
Tail end is connected with afterbody wedge mechanism.Described heavy-loaded precision centering adjusting device is located in pinhole photography light path.
Described Y-axis governor motion I includes linear module, slide connecting plate, Y-axis fixed connecting base, shaft coupling, connecting shaft
Ith, harmonic speed reducer II, connecting shaft II, driving handwheel II, protection board.The base of described linear module is fixed on mounting base
One end.Slide connecting plate is provided with the slide of described linear module, slide connecting plate can move along Y-axis.Described
The drive shaft end of linear module is provided with Y-axis fixed connecting base, the center of Y-axis fixed connecting base and the drive shaft of linear module
Center superposition.Described harmonic speed reducer II is fixed on Y-axis fixed connecting base, and one end of harmonic speed reducer II is stretched into Y-axis and consolidated
Determine in connecting seat cavity, and pass sequentially through connecting shaft II, the drive shaft of shaft coupling and linear module is fixed, harmonic speed reducer II
The other end is fixed by connecting shaft I and driving handwheel II.Described protection board is fixed on the upper of Y-axis fixed connecting base.Described Y
Axle fixed connecting base, shaft coupling, connecting shaft I, harmonic speed reducer II, connecting shaft II and driving handwheel II are coaxially disposed.
The structure of described Y-axis governor motion II is identical with the structure of Y-axis governor motion I.
Described Z axis governor motion I includes inner support frame, accurate lead screw, feed screw nut, Z axis mobile link seat, movable frame
Frame, taper roll bearing I, bearing gland I, directive slide track, guide runner, dust excluding plate, taper roll bearing IV, bevel gear I, cone
Gear II, nut, centripetal angular contact bearing, Z axis fixed connecting base, harmonic speed reducer I, input shaft, decelerator baffle plate, output
Axle, driving handwheel I.Described inner support frame forms the support of Z axis governor motion I with being mutually nested inside and outside mobility framework use
Body.Described inner support frame bottom plate is fixed on the slide connecting plate of Y-axis governor motion.Described inner support frame and mobility framework
Between be provided with directive slide track and guide runner, directive slide track is fixed on the end face outside center of inner support frame, is oriented to and slides
Block is fixed on mobility framework inner side end center.Described inner support frame be provided centrally with by accurate lead screw, feed screw nut,
The Z-axis transmission mechanism that Z axis mobile link seat, bevel gear I form, accurate lead screw rotate about the z axis, and feed screw nut is along accurate lead screw
Lower movement.Described accurate lead screw is assembled and by bearing pressure with inner support frame by taper roll bearing I, taper roll bearing IV
Lid I, taper roll bearing IV are fixed, and one end of accurate lead screw is fixed through the stationary plane of inner support frame with bevel gear I to be connected
Connect.Described feed screw nut is fixedly connected with mobility framework by Z axis mobile link seat, and mobility framework moves up and down along Z axis.Institute
The outer side center for the inner support frame stated is provided with Z axis fixed connecting base.Described Z axis fixed connecting base is provided centrally with by harmonic wave
Decelerator I, input shaft, decelerator baffle plate, output shaft, driving handwheel I, bevel gear II, nut, centripetal angular contact bearing form
Z axis drive mechanism.Described harmonic speed reducer I is fixed on by decelerator baffle plate on the raised head face of Z axis fixed connecting base, humorous
One end of ripple decelerator I is fixedly connected by input shaft with driving handwheel I, and the other end of harmonic speed reducer I passes through output shaft, cone
Gear II is fixedly connected.Described output shaft is assembled by centripetal angular contact bearing with Z axis fixed connecting base and fixed by nut
On connecting seat.Described bevel gear II, output shaft, harmonic speed reducer I, input shaft, driving handwheel I and decelerator baffle plate is coaxial
Set.Described bevel gear I and the engagement of bevel gear II produce transmission.Described mobility framework tapping is provided with dust excluding plate.
The structure of described Z axis governor motion II is identical with the structure of Z axis governor motion I.
The plane ball-and-socket hinge device include free bearing main body, housing, bearing gland II, taper roll bearing II, support shaft I,
Inside casing, bearing gland III, taper roll bearing III, support shaft II, wherein, the center of inside casing is circular hole.Described free bearing main body
It is fixedly connected in the mobility framework inside Z axis governor motion.Described housing by support shaft, taper roll bearing II with it is outer
Frame is assembled and is fixed by bearing gland II, and housing is used to do Y direction rotation around support shaft I.Described inside casing passes through branch
Support axle II, taper roll bearing III are assembled with housing and are fixed by bearing gland III, and inside casing is used to do Z axis around support shaft II
Direction rotates.
Described afterbody wedge mechanism include support block, spherical briquetting, guider screw I, spring I, spring II, upper holder block,
Guider screw II, wherein, the center of support block is U-shaped opening, and is open in surface；Spherical briquetting profile is square, in
The heart is circular hole, and front end face is arc surface；Upper holder block is T-shaped, and the lower surface of protrusion is the face of cylinder；Described support block is fixed on Z
On mobility framework upper surface in axle governor motion II;Four vertex of described spherical briquetting are provided with by guider screw I
The spring return mechanism formed with spring I, spherical briquetting are fixed on the outside of support block by spring return mechanism；Described leads
Pilot hole to screw I through spherical briquetting is fixed on the center of support block；Described upper holder block is fixed on support block
Upper surface, its lower end protruded are matched with the U-shaped opening of support block, and described upper holder block top surface is provided at both ends with by the He of spring II
The spring return mechanism that guider screw II forms；The pilot hole of described guider screw II through upper holder block is fixed on support block
Upper surface；The through hole with support block locking is provided with described spherical briquetting, upper holder block, for the lock after the completion of regulation
Tightly.
The described speed reducing ratio of harmonic speed reducer II is 1:50.
The front end cylindrical outer surface of described collimater matches setting with the circular hole interior surface inside casing center.
The back end cylindrical outer surface of described collimater matches setting with the circular hole interior surface at support block center.
The rear end sphere of described collimater matches setting with the sphere of spherical briquetting.
The back end cylindrical outer surface of described collimater is that the face of cylinder matches setting with the lower end of upper holder block
Described bevel gear I matches setting with bevel gear II.
The precise centering regulation of thick pinhole collimator in the present invention, machine is adjusted finally by corresponding to regulation tail support
Structure, it is ensured that reference light is by the center of the tail supporting mechanism of thick pinhole collimator, and fine adjustment, diffraction ring is expired until distal end
Sufficient testing requirement.
Described fine adjustment, it is by Y-axis governor motion and Z axis governor motion, realizes thick pinhole collimator in X-axis side
To any centering in space.
During the regulation of described thick pinhole collimator spatiality, using plane ball-and-socket hinge device pivot to be fixed
Selected element, during regulation, its projected length in the in-plane direction can elongate or shorten, and device afterbody upper holder block uses bullet
Spring pretension and circle arc support plane, are avoided interference with, it is ensured that are produced internal stress change less, prevented that thick pinhole collimator is whole in state
Drift is not produced after fixed, ensures the stability requirement of state of the art.
Y-axis governor motion in the present invention forms major moving part using the linear module of commercialization, while for line
Property module self-locking and regulation there is preferably regulation feel, the drive part of linear module is slowed down by the harmonic of driving handwheel II
Device II is formed, by increase big retarding than harmonic speed reducer II ensure that Y-axis moving mechanism has good self-locking property.
Z axis governor motion in the present invention forms the liter with auto-lock function using accurate lead screw and feed screw nut's combination
Unit is dropped, feed screw nut's pilot unit is formed using high-precision directive slide track and guide runner, drives handwheel I and commutation
Gear assembly forms the manual actuation module of Z axis.
In the power transmission process of described accurate lead screw, used in the case of vertical all the time, accurate lead screw and silk
It is pressured state all the time between stem nut, therefore the gyration aperture of accurate lead screw and feed screw nut do not interfere with drive system essence
Degree.
The frame mode that the drive part of described Z axis governor motion is coordinated using gear train and larger driving handwheel I,
Meet less displacement governing response precision, the size of handwheel I is driven by increasing, the positioning of Z axis travel mechanism can be improved
Precision.
Inside casing and housing form a right-angled intersection axle, two formed in the plane in plane ball-and-socket hinge device in the present invention
Individual freedom degree rotating spatial axes, two orthogonal axial dimension precision of cross and error are not present interrelated each other, only require
Circular runout is small when Small-angle Rotation, using main body of the double cone roller bearing as structural support, while utilizes two
The bearing gland pretension at end, can obtain the radius run-out degree of degree of precision, and the face-to-face installation of taper roll bearing improves flat
The rigidity of two rotary shafts in the spherical hinge structure of face.
Afterbody wedge mechanism in the present invention is the locking device of thick pinhole collimator governor motion, for convenience regulation and
Pretension thickness pinhole collimator is installed and debugging, in afterbody by the way of spring pre-tightening and circle arc support face, avoids thick accurate
Interfere during straight device regulation, it is ensured that spatiality of the thick pinhole collimator after adjustment is fixed is not drifted about, support block and thick pin
The tail support face gap of hole collimater ensures to allow the tail support face of thick pinhole collimator using medium accuracy tolerance fit
When being rotated around plane ball pivot, there can be slight clearance, gap is provided by the spring I and spring II of precompressed, adjusted
Locked after finishing by screw.
Upper holder block spring return mechanism inside afterbody wedge mechanism, allows thick pinhole collimator to be slided on a small quantity along X-axis line
It is dynamic, and have a larger precompression that thick pinhole collimator is pressed on plane ball-and-socket hinge device all the time, so as to avoid locking
The drift of hot spot during tight state.
Centering regulation process of the present invention is as follows：
The front support and end support of described thick pinhole collimator pass through regulation pair before thick pinhole collimator is not installed
The Y-axis governor motion and the driving wheel of Z axis governor motion answered ensure the center of plane ball-and-socket hinge device and afterbody wedge mechanism
Optical axis center is arrived at center substantially.
The center of described plane ball-and-socket hinge device needs to carry out fine adjustment by optical centering plate, allows benchmark optical axis to pass through
The centering plate center of plane ball-and-socket hinge device, and overlap.
The center of described afterbody wedge mechanism needs to carry out fine adjustment by optical centering plate, allows benchmark optical axis to pass through
The centering plate center of tail supporting mechanism, and overlap.
The heavy-loaded precision centering adjusting device of described thick pinhole collimator can carry the thick pin of 150kg ~ 500kg weight
Hole collimater.
The invention has the advantages that the present invention can realize laser facula and the imaging of thick pinhole collimator benchmark optical axis
The relative position at collimating aperture center determines before plate, can realize that the arcuate edge position in measurement imaging plate image can be regarded
Field diameter.The structure of the present invention is simple, connection is reliable, working service is convenient, it is easy to accomplish the heavy-loaded precision of thick pinhole collimator
Centering is adjusted.
Brief description of the drawings
Fig. 1 is the stereogram of the heavy-loaded precision centering adjusting device of the thick pinhole collimator of the present invention；
Fig. 2 is the front view of the heavy-loaded precision centering adjusting device of the thick pinhole collimator of the present invention；
Fig. 3 is the top view of the heavy-loaded precision centering adjusting device of the thick pinhole collimator of the present invention；
Fig. 4 is the right view of the heavy-loaded precision centering adjusting device of the thick pinhole collimator of the present invention；
Fig. 5 is Fig. 3 A-A to sectional view；
Fig. 6 is Fig. 5 B-B direction sectional view；
Fig. 7 is Fig. 5 D close-up schematic views；
Fig. 8 is Fig. 6 C-C faces sectional view；
Fig. 9 is the stereogram of the inner support frame in the present invention；
Figure 10 is the stereogram of the mobility framework in the present invention；
Figure 11 is the stereogram of the Z axis mobile link seat in the present invention；
Figure 12 is the stereogram of the Z axis fixed connecting base in the present invention；
Figure 13 is the stereogram of the Y-axis fixed connecting base in the present invention；
In figure, the Z axis of 101. Y-axis governor motion, I 102. Y-axis governor motion, II 103.Z axles governor motion I 104. is adjusted
Save I 6. accurate lead screw of the linear inner support frame 5. of 3. slide connecting plate of module 4. driving handwheel of mechanism II 2. 7.
The bearing gland I 12. of I 10. taper roll bearing of stem nut 8.Z axle mobile link 91. mobility frameworks of seat I 11.
The taper roll bearing II of 16. bearing gland of directive slide track 13. guide runner, 14. free bearing main body, 15. housing II 17.
18. III 22. support shaft of support shaft I 19. inside casing, 20. bearing gland, III 21. taper roll bearing II 23.
The upper holder block 29. of 26. spring of spherical 25. guider screw of briquetting of bracer 24., I 27. spring II 28. compresses
The nut 35. of I 33. bevel gear of ring 30. dust excluding plate, 31. taper roll bearing, IV 32. bevel gear II 34.
The decelerator of 37. harmonic speed reducer of centripetal 36. Z axis fixed connecting base of angular contact bearing, I 38. input shaft 39. is kept off
The connecting shaft II of I 43. harmonic speed reducer of the output shaft 41. of plate 40. driving II 42. connecting shaft of handwheel II 44.
45. 46. protection board of shaft coupling, 47. Y-axis fixed connecting base, the 60. thick mounting base 92. of pinhole collimator 70.
Mobility framework II.
Embodiment
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
Fig. 1 is the stereogram of the heavy-loaded precision centering adjusting device of the thick pinhole collimator of the present invention.Fig. 2 is the thick pin of the present invention
The front view of the heavy-loaded precision centering adjusting device structure of hole collimater, Fig. 3 are the heavy duty essences of the thick pinhole collimator of the present invention
The top view of close centering adjusting device, Fig. 4 are that the right side of the heavy-loaded precision centering adjusting device of the thick pinhole collimator of the present invention regards
Figure, Fig. 5 be Fig. 2 A-A to sectional view, Fig. 6 is Fig. 4 B-B direction sectional view, and Fig. 7 is Fig. 5 D partial enlargements signal
Figure, Fig. 8 is Fig. 6 C-C faces sectional view, and Fig. 9 is the stereogram of the inner support frame in the present invention, and Figure 10 is the movement in the present invention
The stereogram of framework, Figure 11 are the stereograms of the Z axis mobile link seat in the present invention, and Figure 12 is that the Z axis in the present invention fixes company
The stereogram of joint chair, Figure 13 are the stereograms of the Y-axis fixed connecting base in the present invention.In Fig. 1~Figure 13, described thick pin
The heavy-loaded precision centering adjusting device of hole collimater includes Y-axis governor motion I 101, Y-axis governor motion II 102, Z axis regulation machine
Structure I 103, Z axis governor motion II 104, plane ball-and-socket hinge device, afterbody wedge mechanism, thick pinhole collimator 60 and mounting base 70；
Its annexation is that described Z axis governor motion I 103 is located at the surface of Y-axis governor motion I 101；Described Z axis regulation machine
Structure II 104 is located at the surface of Y-axis governor motion II 102；Described plane ball-and-socket hinge device is being located at Z axis governor motion I 103 just
Top；The surface of described afterbody wedge mechanism Z axis governor motion II 104；Described mounting base 70 fixes on the ground；
Described wherein Y-axis governor motion I 101, Z axis governor motion I 103, plane ball-and-socket hinge device combine to form thick pinhole collimator
Front support；Described wherein Y-axis governor motion II 102, Z axis governor motion II 104, afterbody wedge Mechanism Combination form thick pin
The end support of hole collimater 60；The front support and end support of described thick pinhole collimator 60 are separately fixed at installation bottom
The both ends of plate, and Central Symmetry；The described front end of thick pinhole collimator 60 is fixed on the center of plane ball-and-socket hinge device, thick pin
The tail end of hole collimater 60 is connected with afterbody wedge mechanism；Described heavy-loaded precision centering adjusting device is located at pinhole photography light path
On.
Described Y-axis governor motion I 101 includes linear module 2, slide connecting plate 3, Y-axis fixed connecting base 47, shaft coupling
45th, connecting shaft I 42, harmonic speed reducer II 43, connecting shaft II 44, driving handwheel II 41, protection board 46.Described linear module 2
Base be fixed on one end of mounting base 70.Slide connecting plate 3 is provided with the slide of described linear module 2, can be along Y
Axle moves.The drive shaft end of described linear module 2 is provided with Y-axis fixed connecting base 47, the center of Y-axis fixed connecting base 47 with
The center superposition of the drive shaft of linear module 2.The harmonic speed reducer II 43 stated is fixed on Y-axis fixed connecting base 47, and harmonic wave subtracts
One end of fast device II 43 is stretched into the upper plenum of Y-axis fixed connecting base 47, and passes sequentially through connecting shaft II 44 and shaft coupling 45 and line
Property module 2 drive shaft fix, the other end of harmonic speed reducer II 43 passes through connecting shaft I 42 to be fixed with driving handwheel II 41.Institute
The protection board 46 stated is fixed on the upper of Y-axis fixed connecting base 47.Described Y-axis fixed connecting base 47, shaft coupling 45, connecting shaft I
42nd, harmonic speed reducer II 43, connecting shaft II 44 and driving handwheel II 41 are to be coaxially disposed.
The structure of described Y-axis governor motion II 102 is identical with the structure of Y-axis governor motion I 101.
Described Z axis governor motion I 103 includes inner support frame 4, accurate lead screw 6, feed screw nut 7, Z axis mobile link seat
8th, mobility framework 91, taper roll bearing I 10, bearing gland I 11, directive slide track 12, guide runner 13, dust excluding plate 30, circular cone
It is roller bearing IV 31, bevel gear I 32, bevel gear II 33, nut 34, centripetal angular contact bearing 35, Z axis fixed connecting base 36, humorous
Ripple decelerator I 37, input shaft 38, decelerator baffle plate 39, output shaft 40, driving handwheel I 5.Described inner support frame 4 and movable frame
Frame 91 uses inside and outside be mutually nested to form the supporter of Z axis governor motion I 103.Described inner support frame 4 is fixed on Y-axis regulation
On the slide connecting plate 3 of mechanism 103.Directive slide track 12 is provided between described inner support frame 4 and mobility framework 91 and is oriented to
Sliding block 13, directive slide track 12 are fixed on the end face outside center of inner support frame 4, and guide runner 13 is fixed on mobility framework 91
Inner side end center.Described inner support frame 4 is provided centrally with by accurate lead screw 6, feed screw nut 7, Z axis mobile link seat
8th, the Z-axis transmission mechanism that bevel gear I 32 forms, accurate lead screw 6 rotate about the z axis, and feed screw nut 7 moves up and down along accurate lead screw.
Described accurate lead screw 6 is with inner support frame 4 by taper roll bearing I 10 and the assembling of taper roll bearing IV 31 and by bearing pressure
Lid I 11 is fixed, and one end of accurate lead screw 6 is fixed through the stationary plane extension of inner support frame 4 with bevel gear I 32 to be connected
Connect.Described feed screw nut 7 is fixedly connected with mobility framework 91 by Z axis mobile link seat 8, is moved up and down along Z axis.Described
The outer side center of inner support frame 4 is provided with Z axis fixed connecting base 36.Described Z axis fixed connecting base 36 is provided centrally with by humorous
It is ripple decelerator I 37, input shaft 38, decelerator baffle plate 39, output shaft 40, driving handwheel I 41, bevel gear II 33, nut 34, centripetal
The Z axis drive mechanism that angular contact bearing 39 forms.Described harmonic speed reducer I 37 is fixed on Z axis by decelerator baffle plate 39 and consolidated
On the raised head face for determining connecting seat 36, one end of harmonic speed reducer I 37 is fixedly connected by input shaft 38 with driving handwheel I 41,
The other end of harmonic speed reducer I 41 is fixedly connected by output shaft 40 with bevel gear II 33.Described output shaft 38 is fixed with Z axis
Connecting seat 36 is assembled by centripetal angular contact bearing 39 and is fixedly connected by nut 34.Described bevel gear II 33, output shaft 40,
Harmonic speed reducer I 41, input shaft 38, driving handwheel I 5, decelerator baffle plate 39 are to be coaxially disposed.Described bevel gear I 32 and cone
The engagement of gear II 33 produces transmission.The described tapping of mobility framework 91 is provided with dust excluding plate 30.
The structure of described Z axis governor motion II 104 is identical with the structure of Z axis governor motion I 103.
The plane ball-and-socket hinge device include free bearing main body 14, housing 15, bearing gland II 16, taper roll bearing II 17,
Support shaft I 18, inside casing 19, bearing gland III 20, taper roll bearing III 21, support shaft II 22, wherein, the center of inside casing 19 is
Circular hole.Described free bearing main body 14 is fixedly connected in the mobility framework 91 of the inside of Z axis governor motion I 103.Described housing 15
Assembled and be fixed by bearing gland II 16, housing 15 with free bearing main body 14 by support shaft 18 and taper roll bearing II 17
For doing Y direction rotation around support shaft I 18.Described inside casing 19 is by support shaft II 22 and taper roll bearing III 21 and outside
Frame 15 is assembled and is fixed by bearing gland III 22, and inside casing 19 is used to do Z-direction rotation around support shaft II 22.
Described afterbody wedge mechanism includes support block 23, spherical briquetting 24, guider screw I 25, spring I 26, spring II
27th, upper holder block 28, guider screw II 29, wherein, the center of support block 23 is U-shaped opening, and is open in surface；Spherical briquetting
24 profiles are square, and center is circular hole, and front end face is arc surface；Upper holder block 28 is T-shaped, and the lower surface of protrusion is the face of cylinder；
Described support block 23 is fixed on the upper surface of mobility framework 92 in Z axis governor motion II 104;Described spherical briquetting 24
Four vertex are provided with the spring return mechanism being made up of guider screw I 25 and spring I 26, and spherical briquetting 24 is answered by spring
Position mechanism is fixed on the outside of support block 23；The pilot hole of described guider screw I 25 through spherical briquetting 24 is fixed on support
The center of block；Described upper holder block 28 is fixed on the upper surface of support block 23, and its lower end protruded is U-shaped with support block 23
Opening matching, the described top surface of upper holder block 28 are provided at both ends with the spring reset machine being made up of spring II 27 and guider screw II 29
Structure；The pilot hole of described guider screw II 29 through upper holder block 28 is fixed on the upper surface of support block 23；Described spherical pressure
The through hole locked with support block 23 is provided with block 24, upper holder block 28, for the locking after the completion of regulation.Described guiding spiral shell
Follow closely the spring return mechanism and the spring return mechanism of spring II 27 and the composition of guider screw II 29 of I 25 and the composition of spring I 26
Structure is identical.
The profile of inner support frame 4 of the described the inside of Z axis governor motion I 103 is doorframe shape, and the supporting plate of both sides is right for left and right
Claim, be provided with rectangular recess on the outside of supporting plate, reinforcing plate be provided between bottom plate and top plate, top plate, reinforcing plate are provided with peace
The pilot hole of accurate lead screw 6 is filled, as shown in Figure 9.
The profile of mobility framework 91 in described Z axis governor motion I 103 is cuboid, surrounding coaming plate and top plate composition one
Two sides of individual semi-enclosed cavity, surrounding coaming plate or so are respectively arranged with a rectangular through holes, convenient installation and mitigation weight
Amount, former and later two sides of surrounding coaming plate are respectively arranged with two waist through hole, and the inner surface of left and right coaming plate is respectively arranged with groove,
For installing Z axis mobile link seat.Top plate is provided with a mounting hole；As shown in Figure 10.
The profile of Z axis mobile link seat 8 in described Z axis governor motion I 103 is cuboid, six symmetrical hollow outs in face, is used
In mitigating weight, hollow part is the face of cylinder.Z axis mobile link seat 8 is used for feed screw nut 7 and the connection of mobility framework 91, screw mandrel
Nut 7, Z axis mobile link seat 8, mobility framework 91 are overall to be moved up and down along Z axis.As shown in Figure 11.
Z axis fixed connecting base 36 in described Z axis governor motion I 103 is by rectangular slab and rectangular slab center
Prominent round platform is formed, and cylindrical step hole is provided with round platform.Z axis fixed connecting base 36 is located at the outside of inner support frame 4, uses
In installation harmonic speed reducer I 37, input shaft 38, decelerator baffle plate 39, output shaft 40, driving handwheel I 41, bevel gear II 33, spiral shell
Mother 34, centripetal angular contact bearing 39.As shown in Figure 12.
The profile of Y-axis fixed connecting base 47 in described Y-axis governor motion I 101 is cuboid, and front/rear end has circle
Through hole, the left and right sides and top surface hollow out.Y-axis fixed connecting base 47 is used to install shaft coupling 45, connecting shaft I 42, harmonic speed reducer
II 43, connecting shaft II 44 and driving handwheel II 41.As shown in Figure 13.
The described speed reducing ratio of harmonic speed reducer II is 1:50.
The front end cylindrical outer surface of described collimater matches setting with the circular hole interior surface inside casing center.
The back end cylindrical outer surface of described collimater matches setting with the circular hole interior surface at support block center.
The rear end sphere of described collimater matches setting with the sphere of spherical briquetting.
The back end cylindrical outer surface of described collimater is that the face of cylinder matches setting with the lower end of upper holder block
Described bevel gear I matches setting with bevel gear II.
In the present embodiment, the directive slide track in the present invention is provided with two, and directive slide track 12 is in two directive slide tracks
One；Guide runner is provided with two, and guide runner 13 is one in two guide runners；Support shaft I is provided with two,
Support shaft I 18 is one in two support shafts I；Taper roll bearing II is provided with two, and taper roll bearing II 17 is two
One in individual taper roll bearing II；Bearing gland II is provided with two, and bearing gland II 16 is in two bearing glands II
One；Support shaft II is provided with two, and support shaft II 22 is one in two support shafts II；Taper roll bearing III is set
There are two, taper roll bearing III 21 is one in two taper roll bearings III；Bearing gland III is provided with two, bearing
Gland III 20 is one in two bearing glands III；Guider screw I is provided with four, and guider screw I 25 is four guiding spiral shells
One in nail I；Spring I is provided with four, and spring I 26 is one in four springs I；Guider screw II is provided with two,
Guider screw II 29 is one in two guider screws II；Spring II is provided with two, and spring II 27 is in two springs II
One.
Linear module in described Y-axis governor motion is commercially available prod, helical pitch 10mm, positioning precision 0.025mm, is carried
6620kg。
Described bevel gear I 32 and the engagement of bevel gear II 33 produce transmission, and speed reducing ratio is 1:2.
The precise centering regulation of thick pinhole collimator 60 in the present invention, finally by regulation corresponding to regulation tail support
Mechanism, it is ensured that reference light passes through the center of the tail supporting mechanism of thick pinhole collimator, fine adjustment, until distal end diffraction ring
Meet testing requirement.
Described fine adjustment, it is the movement by front and rear Y-axis governor motion and Z axis governor motion, realizes that thick pin hole is accurate
Straight device is in the space of X-direction arbitrarily in.
During the regulation of the described spatiality of thick pinhole collimator 60, using plane ball-and-socket hinge device pivot as fixation
Selected element, during regulation, its projected length in the in-plane direction can be elongated or shortened, and device afterbody upper holder block 28 is adopted
With spring pre-tightening and circle arc support plane, avoid interference with, it is ensured that produce internal stress change less, prevent thick pinhole collimator 60 from existing
State does not produce drift after adjusting, and ensures the stability requirement of state of the art.
Y-axis governor motion in the present invention forms major moving part using the linear module 2 of commercialization, while for line
Property module 2 self-locking and regulation have preferably regulation feel, the drive part of linear module 2 is by the harmonic of driving handwheel II 41
Decelerator II 43 is formed, by increase big retarding than harmonic speed reducer II 43 ensure that Y-axis moving mechanism has good self-locking
Performance.
Z axis governor motion in the present invention is formed with auto-lock function using accurate lead screw 6 and the combination of feed screw nut 7
Lifting unit, the pilot unit of feed screw nut 7 is formed using high-precision directive slide track 12 and Z axis mobile link seat 8, drives hand
Take turns the manual actuation module of I 5 and tumbler gear component composition Z axis.
In the power transmission process of described accurate lead screw 6, used in the case of vertical all the time, the He of accurate lead screw 6
It is pressured state all the time between feed screw nut 7, therefore the gyration aperture of accurate lead screw 6 and feed screw nut 7 do not interfere with system
The precision of transmission.
The structure side that the drive part of described Z axis governor motion is coordinated using gear train and larger driving handwheel I 5
Formula, meet less displacement governing response precision, the size of handwheel I 5 is driven by increasing, Z axis travel mechanism can be improved
Positioning precision.
Inside casing and housing form a right-angled intersection axle, two formed in the plane in plane ball-and-socket hinge device in the present invention
Individual freedom degree rotating spatial axes, two orthogonal axial dimension precision of cross and error are not present interrelated each other, only require
Circular runout is small when Small-angle Rotation, using main body of the double cone roller bearing as structural support, while utilizes two
The bearing gland pretension at end, can obtain the radius run-out degree of degree of precision, and the face-to-face installation of taper roll bearing improves flat
The rigidity of 2 rotary shafts in the spherical hinge structure of face.
Afterbody wedge mechanism in the present invention is the locking device of thick pinhole collimator governor motion, for convenience regulation and
Pretension thickness pinhole collimator 60 is installed and debugged, and in afterbody by the way of spring pre-tightening and circle arc support face, is avoided in thickness
Interfere during collimator adjustment, it is ensured that spatiality of the thick pinhole collimator 60 after adjustment is fixed is not drifted about, support block 23
Ensure to allow thick pinhole collimator 60 using medium accuracy tolerance fit with the tail support face gap of thick pinhole collimator 60
Tail support face can have slight clearance, the spring I 26 and spring II that gap passes through precompressed when being rotated around plane ball pivot
27 provide, and are locked after regulation by screw.
Upper holder block 28 inside afterbody wedge mechanism carries spring return mechanism, allows thick pinhole collimator along X-axis line
It is a small amount of to slide, and have a larger precompression that thick pinhole collimator 60 is pressed on plane ball-and-socket hinge device all the time, so as to
Avoid the drift of the hot spot in locking state.
It is pointed out that the heavy-loaded precision centering regulation dress of the thick pinhole collimator described above for illustrating the present invention
Some principles put.This specification is not intended to limit to the heavy-loaded precision centering adjusting device of the thick pinhole collimator of the present invention
In shown and described concrete structure and the scope of application, therefore every corresponding modification for being possible to be utilized and equivalent,
Belong to the apllied the scope of the claims of the present invention.
Claims (9)
1. a kind of heavy-loaded precision centering adjusting device for thick pinhole collimator, it is characterised in that described thick pin hole is accurate
The heavy-loaded precision centering adjusting device of straight device includes Y-axis governor motion I（101）, Y-axis governor motion II（102）, Z axis regulation machine
Structure I（103）, Z axis governor motion II（104）, plane ball-and-socket hinge device, afterbody wedge mechanism, thick pinhole collimator（60）And installation
Bottom plate（70）；Its annexation is described Z axis governor motion I（103）Positioned at Y-axis governor motion I（101）Surface；Institute
The Z axis governor motion II stated（104）Positioned at Y-axis governor motion II（102）Surface；Described plane ball-and-socket hinge device is located at Z
Axle governor motion I（103）Surface；Described afterbody wedge mechanism is located at Z axis governor motion II（104）Surface；Institute
The mounting base stated（70）Fix on the ground；Described Y-axis governor motion I（101）, Z axis governor motion I（103）, plane ball
Hinge body combines the front support to form thick pinhole collimator；Described Y-axis governor motion II（102）, Z axis governor motion II
（104）, afterbody wedge Mechanism Combination form thick pinhole collimator（60）End support；Described thick pinhole collimator（60）'s
Front support and end support are separately fixed at the both ends of mounting base, and Central Symmetry；Described thick pinhole collimator（60）
Front end be fixed on the center of plane ball-and-socket hinge device, thick pinhole collimator（60）Tail end be connected with afterbody wedge mechanism；
Described heavy-loaded precision centering adjusting device is located in pinhole photography light path.
2. the heavy-loaded precision centering adjusting device of thick pinhole collimator according to claim 1, it is characterised in that described
Y-axis governor motion I（101）Including linear module（2）, slide connecting plate（3）, Y-axis fixed connecting base（47）, shaft coupling（45）、
Connecting shaft I（42）, harmonic speed reducer II（43）, connecting shaft II（44）, driving handwheel II（41）, protection board（46）；It, which is connected, closes
System is described linear module（2）Base be fixed on mounting base（70）One end；Described linear module（2）Slide
On be provided with slide connecting plate（3）；Described linear module（2）Drive shaft end be provided with Y-axis fixed connecting base（47）, Y-axis
Fixed connecting base（47）Center and linear module（2）Drive shaft center superposition；Described harmonic speed reducer II（43）Gu
It is scheduled on Y-axis fixed connecting base（47）On, harmonic speed reducer II（43）One end stretch into Y-axis fixed connecting base（47）In upper plenum,
And pass sequentially through connecting shaft II（44）, shaft coupling（45）With linear module（2）Drive shaft fix, harmonic speed reducer II（43）'s
The other end passes through connecting shaft I（42）With driving handwheel II（41）It is fixed；Described protection board（46）It is fixed on Y-axis fixed connecting base
（47）It is upper；Described Y-axis fixed connecting base（47）, shaft coupling（45）, connecting shaft I（42）, harmonic speed reducer II（43）, connection
Axle II（44）, driving handwheel II（41）To be coaxially disposed；Described Y-axis governor motion II（102）Structure and Y-axis governor motion
Ⅰ（101）Structure it is identical.
3. the heavy-loaded precision centering adjusting device of thick pinhole collimator according to claim 1, it is characterised in that described
Z axis governor motion I（103）Including inner support frame（4）, accurate lead screw（6）, feed screw nut（7）, Z axis mobile link seat（8）, move
Dynamic framework（91）, taper roll bearing I（10）, bearing gland I（11）, directive slide track（12）, guide runner（13）, dust excluding plate
（30）, taper roll bearing IV（31）, bevel gear I（32）, bevel gear II (33), nut (34), centripetal angular contact bearing (35),
Z axis fixed connecting base (36), harmonic speed reducer I (37), input shaft (38), decelerator baffle plate (39), output shaft (40), driving hand
Take turns I (5)；Its annexation is described inner support frame（4）With mobility framework（91）Z axis tune is formed using inside and outside be mutually nested
Save mechanism I（103）Supporter；Described inner support frame（4）It is fixed on Y-axis governor motion（103）Slide connecting plate (3)
On；Described inner support frame（4）With mobility framework（91）Between be provided with directive slide track（12）And guide runner（13）, it is oriented to and slides
Rail（12）It is fixed on inner support frame（4）End face outside center, guide runner（13）It is fixed on mobility framework（91）Inner side
End face center position；Described inner support frame（4）It is provided centrally with by accurate lead screw（6）, feed screw nut（7）, Z axis mobile link
Seat（8）, bevel gear I（32）The Z-axis transmission mechanism of composition, accurate lead screw（6）Rotate about the z axis, feed screw nut（7）Along accurate lead screw
Move up and down；Described accurate lead screw（6）With inner support frame（4）Pass through taper roll bearing I (10), taper roll bearing IV
(31) assemble and be fixed by bearing gland I (11), accurate lead screw（6）Lower end pass through inner support frame（4）Stationary plane with
Bevel gear I（32）It is fixedly connected；Described feed screw nut（7）With mobility framework（91）Pass through Z axis mobile link seat（8）It is fixed to connect
Connect, for mobility framework（91）Moved up and down along Z axis；Described inner support frame（4）Outer side center be provided with Z axis and be fixedly connected
Seat（36）；Described Z axis fixed connecting base（36）It is provided centrally with by harmonic speed reducer I（37）, input shaft（38）, decelerator gear
Plate (39), output shaft (40), driving handwheel I (41), bevel gear II (33), nut (34), centripetal angular contact bearing (39) composition
Z axis drive mechanism；Described harmonic speed reducer I (37) is fixed on Z axis fixed connecting base (36) by decelerator baffle plate (39)
Raised head face on, one end of harmonic speed reducer I (37) is fixedly connected by input shaft (38) with driving handwheel I (41), harmonic wave
The other end of decelerator I (41) is fixedly connected by output shaft (40) with bevel gear II (33)；Described output shaft (38) and Z axis
Fixed connecting base (36) is assembled by centripetal angular contact bearing (39) and is fixedly connected by nut (34)；Described bevel gear II
(33), output shaft (40), harmonic speed reducer I (41), input shaft (38), driving handwheel I (5), decelerator baffle plate (39) are coaxial
Set；Described bevel gear I (32) and bevel gear II (33) engaged transmission；Described mobility framework (91) tapping is provided with anti-
Dirt plate (30)；The structure of described Z axis governor motion II (104) is identical with the structure of Z axis governor motion I (103).
4. the heavy-loaded precision centering adjusting device of thick pinhole collimator according to claim 1, it is characterised in that described flat
Face ball-and-socket hinge device includes free bearing main body (14), housing (15), bearing gland II (16), taper roll bearing II（17）, support shaft I
（18）, inside casing（19）, bearing gland III（20）, taper roll bearing III（21）, support shaft II（22）, wherein, inside casing（19）'s
Center is circular hole；Its annexation is described free bearing main body（14）It is fixedly connected on Z axis governor motion I（103）In movement
Framework（91）On；Described housing（15）Pass through support shaft（18）, taper roll bearing II（17）With free bearing main body（14）Assembling
And by bearing gland II（16）It is fixed, housing（15）For around support shaft I（18）Do Y direction rotation；Described inside casing
（19）Pass through support shaft II（22）, taper roll bearing III（21）With housing（15）Assemble and by bearing gland III（22）Compress solid
It is fixed, inside casing（19）For around support shaft II（22）Do Z-direction rotation.
5. the heavy-loaded precision centering adjusting device of thick pinhole collimator according to claim 1, it is characterised in that described
Afterbody wedge mechanism includes support block（23）, spherical briquetting（24）, guider screw I（25）, spring I（26）, spring II（27）, on
Briquetting（28）, guider screw II（29）, wherein, support block（23）Center be U-shaped opening, and be open in surface；Spherical pressure
Block（24）Profile is square, and center is circular hole, and front end face is arc surface；Upper holder block（28）For T-shaped, the lower surface of protrusion is circle
Cylinder；Its annexation is described support block（23）It is fixed on Z axis governor motion II（104）In mobility framework（92）On
On end face;Described spherical briquetting（24）Four vertex be provided with by guider screw I（25）With spring I（26）The bullet of composition
Spring resetting-mechanism, spherical briquetting（24）Support block is fixed on by spring return mechanism（23）Outside；Described guider screw I
（25）Through spherical briquetting（24）Pilot hole be fixed on the center of support block；Described upper holder block（28）It is fixed on support
Block（23）Upper surface, its protrude lower end and support block（23）U-shaped opening matching, described upper holder block（28）Top surface both ends
It is provided with by spring II（27）With guider screw II（29）The spring return mechanism of composition；Described guider screw II（29）Pass through
Upper holder block（28）Pilot hole be fixed on support block（23）Upper surface；Described spherical briquetting（24）, upper holder block（28）It is upper equal
It is provided with and support block（23）The through hole of locking, for the locking after the completion of regulation.
6. the heavy-loaded precision centering adjusting device of thick pinhole collimator according to claim 2, it is characterised in that described
Harmonic speed reducer II（43）Speed reducing ratio is 1:50.
7. the heavy-loaded precision centering adjusting device of the thick pinhole collimator according to claim 1 or 4, it is characterised in that institute
The thick pinhole collimator stated（60）Front end cylindrical outer surface and inside casing（19）The circular hole interior surface matching at center is set.
8. the heavy-loaded precision centering adjusting device of thick pinhole collimator according to claim 1 or 5, it is characterised in that institute
The thick pinhole collimator stated（60）Back end cylindrical outer surface and support block（23）The circular hole interior surface matching at center is set；It is described
Thick pinhole collimator（60）Rear end sphere and spherical briquetting（24）Sphere matching set；Described thick pinhole collimator
（60）Back end cylindrical outer surface and upper holder block（28）Lower end for the face of cylinder matching set.
9. the heavy-loaded precision centering adjusting device of thick pinhole collimator according to claim 3, it is characterised in that described
Bevel gear I（32）With bevel gear II（33）Matching is set.
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| CN109737143A (en) * | 2019-02-19 | 2019-05-10 | 北京永新医疗设备有限公司 | Centering bearing holder device |
| CN111791179A (en) * | 2020-07-31 | 2020-10-20 | 佛山原子医疗设备有限公司 | Barrel-shaped pinhole collimator installation device of nuclear medical equipment |
| US20230194444A1 (en) * | 2021-12-17 | 2023-06-22 | Korea Institute Of Ocean Science & Technology | X-ray backscatter imaging system for precise searching for container hazardous cargo and method for controlling the same |
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| CN107727673B (en) | 2023-05-26 |
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