CN202066805U - Adjusting mechanism of neutron optical path of horizontal sample geometric neutron reflection spectrum instrument - Google Patents
Adjusting mechanism of neutron optical path of horizontal sample geometric neutron reflection spectrum instrument Download PDFInfo
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- CN202066805U CN202066805U CN2011201059517U CN201120105951U CN202066805U CN 202066805 U CN202066805 U CN 202066805U CN 2011201059517 U CN2011201059517 U CN 2011201059517U CN 201120105951 U CN201120105951 U CN 201120105951U CN 202066805 U CN202066805 U CN 202066805U
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Abstract
The utility model relates to an adjusting mechanism of neutron optical path of horizontal sample geometric neutron reflection spectrum instrument. The adjusting mechanism comprises an incident elevating mechanism and a reflection elevating mechanism; a first incident gap seat, an incident neutron flying pipe and a second incident gap seat are sequentially installed on the incident elevating mechanism along the optical path direction of the incident neutron; and a first reflection gap seat, a reflection neutron flying pipe and a second reflection gap seat are sequentially installed on the reflection elevating mechanism along the optical path direction of the reflected neutron. Due to the adoption of the adjusting device, the position of gaps and the neutron flying pipes can be high precisely adjusted, the incident angle and the reflection angle of neutron beams can be high precisely changed, a scattering vector of high resolution can be obtained, the incident angle range of the neutron beam reaches minus 5 DEG to 9 DEG, the reflection angle range of the neutron beam reaches minus 5 DEG to 9 DEG, so the measured scattering vector range is larger. At the same time, within the incident angle range and the reflection angle range, the sample can be always aligned to the neutron beam.
Description
Technical field
The utility model relates to the adjusting mechanism of the neutron light path in neutron scattering field, refers more particularly to the adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of horizontal sample (Neutron reflectometer-horizontal sample geometry).
Background technology
Neutron reflection is a branch of the neutron scattering that grows up mid-term at the beginning of the eighties.In the past twenty years, the neutron reflection technology has become a kind of strong means of surveying 0.1nm～100nm scope inside surface and interfacial structure, liquid surface and solid film have been included in its application, such as liquid crystal surfactant, thin polymer film, biological membrane and magnetic film or the like.The neutron reflection technology is by the variation relation of MEASUREMENTS OF THIN reflectivity with the Scattering of Vector Q of vertical thin-film direction, reflection scattering length density is along the distribution of vertical thin-film direction, by analyzing the information such as roughness that reflectance curve obtains film thickness, scattering length density, surface and interface, for microstructure, the physical and chemical performance of deeply being familiar with membraneous material provides important evidence.
Neutron light path in the neutron reflection technology comprises incident neutron light path and the reflected neutron light path after the sample reflection.The incident neutron light path depends on the incident angle of neutron beam, and the reflected neutron light path depends on the reflection angle of neutron beam.Definition θ is that the incident angle of neutron beam is the angle of incident neutron bundle and sample surfaces, and perhaps the reflection angle of neutron beam is the angle of reflected neutron bundle and sample surfaces, Scattering of Vector Q=4 π sin θ/λ, and wherein λ is the wavelength of neutron beam.Neutron optical routing collimating apparatus limits.The incident angle of neutron beam is limited by the incident collimating apparatus, and the reflection angle of neutron beam is limited by reflective collimator.Collimating apparatus is the slit of being made by the material of intercept neutrons.Therefore, obtain the neutron beam of certain incident angle or reflection angle by the center of control slit.Simultaneously, for the thermalization of the absorption that reduces air centering in the neutron optic path process and air at room temperature, the neutron tof tube of vacuum is set on the path of neutron transmission to neutron.
The scattering geometry of neutron reflection spectrometer has horizontal dispersion and two kinds of vertical scatterings.The neutron reflection spectrometer of measuring solid sample is generally vertical sample how much, changes the incident angle of neutron beam by rotary sample, changes the reflection angle that reflective collimator changes neutron beam simultaneously.Relative solid material, the surface/interface research of liquid has following characteristics: 1) the scattering length density of liquid is generally lower, cause the neutron reflection critical angle generally less, and reflectivity is lower, needs high strength, neutron beam that collimation is good; 2) owing to action of gravity, the surface/interface of liquid can only keep surface level.Therefore, the neutron reflection spectrometer of measuring liquid surface is how much of horizontal samples, can not change the incident angle of neutron beam by rotating sample, and can only be by changing the incident angle that the incident collimating apparatus changes neutron beam, by changing the reflection angle that reflective collimator changes neutron beam.
State-of-the-art in the world is how much neutron reflection spectrometers of horizontal sample in USA National Institute of Standard and Technology (National Institute of Standards and Technology) neutron research centre.In this spectrometer, the position change mechanism of incident collimating apparatus and incident neutron tof tube is made up of two lifting tables, circular arc slip compensating module and translation compensating module, the intrinsic backhaul gap of circular arc slip compensating module makes bearing accuracy not high, causes the incident angle precision of neutron beam low; Simultaneously, the position change mechanism of reflective collimator and reflected neutron tof tube builds in the position change mechanism of incident collimating apparatus and incident neutron tof tube, causes the reflection angle precision of neutron beam low.The bearing accuracy of incident angle and reflection angle is low to cause the resolution of instrument low.In addition, the neutron beam that this spectrometer can reach go into reflection angle scope-5 °～6 °, the definition incident angle is rotated counterclockwise to just.
Summary of the invention
The purpose of this utility model is in order to satisfy the high resolving power requirement of neutron reflection experiment, and at above-described backhaul clearance issues, thereby the adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of a kind of horizontal sample is proposed, so that can accurately adjust the position of slit and neutron tof tube, and can change the incident angle and the reflection angle of neutron beam independently, and angle precision height, the ranges of incidence angles of neutron beam reach-5 °～9 °, and the reflection angle scope of neutron beam reaches-5 °～9 °; Simultaneously, in going into the reflection angle scope, sample can be aimed at neutron beam all the time.
The adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of horizontal sample of the present utility model comprises along the optical path direction of incident neutron bundle being fixedly mounted on the incident elevating mechanism 1 on the platform 10 successively and reflecting elevating mechanism 2.
Described incident elevating mechanism 1 comprise first spherical plain bearing rod end to 1100, be vertically fixed on main lifting table 1200 and secondary lifting table 1300, Y shape sway brace 1400, the first decussation roller V-type line slideway auxiliary 1500 and second spherical plain bearing rod end 1600 on the platform 10.
The spherical plain bearing rod end that adopts in the utility model is a kind of sliding bearing structure of supporting and rotating can realized; Described Y shape sway brace 1400 is to have 2 back shafts in Y shape divergent ends, and the other end is the back up pad of strip.
Described first spherical plain bearing rod end is made up of two identical spherical plain bearing rod ends 1100, first spherical plain bearing rod end is vertically fixed on the work top 1213 of described main lifting table 1200 rod end of two spherical plain bearing rod ends of 1100, and first spherical plain bearing rod end adopts interference fit to be connected respectively with 2 back shafts of described Y shape sway brace 1400 respectively to 2 oscillating bearings of 1100; The back up pad of Y shape sway brace 1400 is fixed on the slide block on the described first decussation roller V-type line slideway auxiliary 1500; The line slideway of the described first decussation roller V-type line slideway auxiliary 1500 is fixed on the rod end of described second spherical plain bearing rod end 1600, and second ball nut on the oscillating bearing of described second spherical plain bearing rod end 1600 and the secondary lifting table 1300 and sleeve 1304 adopt the bearing pin interference fit to be connected.
Along the optical path direction of incident neutron bundle, on the back up pad of described Y shape sway brace 1400, be installed with the first entrance slit seat 3 successively, the incident neutron tof tube 4 and the second entrance slit seat 5.
On the described first entrance slit seat 3 the first positive and negative threaded rod is installed vertically, the plus thread end of the described first positive and negative threaded rod is equipped with incident first light barrier by being threaded, and the left-hand thread end is equipped with incident second light barrier by being threaded; The slit that forms between the upper edge of the lower edge of described incident second light barrier and described incident first light barrier is first entrance slit.The material of described incident first light barrier and incident second light barrier all is preferably boron carbide; The gap size of described first entrance slit can be regulated between 0 to 20mm.
Incident neutron tof tube 4 on the described incident elevating mechanism 1 is to be shaped as rectangular hollow tubular, and its profile length and width height is of a size of 550mm * 55mm * 55mm, and the internal side hole dimension is 50mm * 50mm.The material of described incident neutron tof tube 4 preferably adopts the boracic aluminum alloy materials.
On the described second entrance slit seat 5 the second positive and negative threaded rod is installed vertically, the plus thread end of the described second positive and negative threaded rod is equipped with incident the 3rd light barrier by being threaded, and the left-hand thread end is equipped with incident the 4th light barrier by being threaded; The slit that forms between the upper edge of the lower edge of described incident the 4th light barrier and described incident the 3rd light barrier is second entrance slit.The material of described incident the 3rd light barrier and incident the 4th light barrier all is preferably boron carbide; The gap size of described second entrance slit can be regulated between 0 to 20mm.
In underway when experiment son reflection, sample 9 is placed on the main lifting table 1200, and is positioned on the intersection point of vertical center line of neutron beam and main lifting table 1200.The said structure design characteristic be can guarantee first spherical plain bearing rod end to 1100 center of rotation and sample all the time on same height.
Described reflection elevating mechanism 2 comprises the 3rd spherical plain bearing rod end 2100, the second decussation roller V-type line slideway auxiliary 2200, be vertically fixed on reflection lifting table 2300, the reflection sway brace 2400 on the platform 10 and have the bearing support block 2500 of bearing.Described reflection sway brace 2400 is that an end has rotating shaft, and the other end is a plane support plate structure.
Bearing on rotating shaft on the described reflection sway brace 2400 and the described bearing support block 2500 adopts interference fit to be connected, slide block on the plane support plate structure end of described reflection sway brace 2400 and the described second decussation roller V-type line slideway auxiliary 2200 is fixed, the guide rail of the described second decussation roller V-type line slideway auxiliary 2200 is fixed on the rod end of described the 3rd spherical plain bearing rod end 2100, and the oscillating bearing of described the 3rd spherical plain bearing rod end 2100 is connected by the bearing pin interference fit with the 3rd ball nut and sleeve 2304 on the described reflection lifting table 2300; Bearing support block 2500 is fixed on the bracing frame.
Optical path direction along the reflected neutron bundle fixedly mounts the first reflection slit base 6, reflected neutron tof tube 7 and the second reflection slit base 8 successively at the upper surface that reflects the reflection sway brace 2400 on the elevating mechanism 2.
On the described first reflection slit base 6 the 3rd positive and negative threaded rod is installed vertically, the plus thread end of described the 3rd positive and negative threaded rod is equipped with reflection first light barrier by being threaded, and the left-hand thread end is equipped with reflection second light barrier by being threaded; The slit that forms between the upper edge of the lower edge of described reflection second light barrier and described reflection first light barrier is the first reflection slit.The material of described reflection first light barrier and reflection second light barrier all is preferably boron carbide.The gap size of the described first reflection slit can be regulated between 0 to 10mm.
Reflected neutron tof tube 7 on the described reflection elevating mechanism 2 is the hollow tubulars that are shaped as rectangular important actor shape, and the small end of the hollow tubular of this rectangular important actor shape is positioned at the described first reflection slit base 6 on one side; The total length of described reflected neutron tof tube is 1680mm, and the wide height of small end profile is of a size of 83mm * 58mm, and the port sizes of small end is 75mm * 50mm, holds the wide height of profile to be of a size of 83mm * 120mm greatly, and the port sizes of big end is 75mm * 112mm.The material of described reflected neutron tof tube preferably adopts the boracic aluminum alloy materials.
On the described second reflection slit base 8 on the described reflection elevating mechanism 2 the 4th positive and negative threaded rod is installed vertically, the plus thread end of described the 4th positive and negative threaded rod is equipped with reflection the 3rd light barrier by being threaded, the left-hand thread end is equipped with reflection the 4th light barrier by being threaded; The slit that forms between the upper edge of the lower edge of described reflection the 4th light barrier and described reflection the 3rd light barrier is the second reflection slit.The material of described reflection the 3rd light barrier and reflection the 4th light barrier all is preferably boron carbide.The gap size of the described second reflection slit can be regulated between 0 to 20mm.
The wide high size of described light barrier is 165mm * 50mm, thick 1.5mm.In order to guarantee the width consistance of described each slit in the utility model, the linearity of the last lower edge of above-mentioned all light barriers is 0.01mm.
Described positive and negative threaded rod is meant that an end outer round surface is processed with plus thread, and other end outer round surface is processed with the round bar structural member of left-hand thread.
Described incident elevating mechanism 1 and reflection elevating mechanism 2 are guaranteed that by installation accuracy the centre-height conformity error of first entrance slit, incident neutron tof tube 4, second entrance slit, sample 9, the first reflection slit, reflected neutron tof tube 7, the second reflection slit etc. is not more than 0.1mm when incident angle is zero degree.
In described incident elevating mechanism 1, the center of described sample 9 is 2000mm to the horizontal range of middle sub-light source 11; Horizontal range from the center of described sample 9 to the bearing center of described second spherical plain bearing rod end 1600 is 734mm; Vertical range from the center line of described incident neutron tof tube 4 to the bearing center of described second spherical plain bearing rod end 1600 is 394mm.
In described reflection elevating mechanism 2, the center of described sample 9 is 2000mm to the horizontal range at the rotating shaft center of described bearing support block 2500; Horizontal range from the bearing center of described the 3rd spherical plain bearing rod end 2100 to the rotating shaft center of described bearing support block 2500 is 1508mm.Vertical range from the center line of described reflected neutron tof tube 7 to the bearing center of described the 3rd spherical plain bearing rod end 2100 is 347mm.
The adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of horizontal sample of the present utility model, owing to adopted above-mentioned rational result and size, can realize the incident angle of neutron beam and the change of reflection angle, and the ranges of incidence angles of neutron beam reaches-5 °～9 °, and the reflection angle scope of neutron beam reaches-5 °～9 °.Simultaneously, in going into the reflection angle scope, sample can be aimed at neutron beam all the time.
Described main lifting table 1200, secondary lifting table 1300 and reflection lifting table 2300 all are the physical construction with rising and down maneuver function that worm-and-wheel gear driven by stepper motors and ball screw assembly, are formed; The lifting table that selection has above-mentioned physical construction and function carries out orderly elevating movement, can realize that high precision changes the incident angle and the reflection angle of neutron beam.In order better to realize the purpose of this utility model, the utility model also provides the lifting table of following structure.
Described main lifting table 1200 comprises first stepper motor 1201, first worm-gear speed reducer 1202, first ball-screw 1203, first ball nut and sleeve 1204, the first linear spherical guide 1205, the first linear spherical guide slide block 1206, the second linear spherical guide 1207, the second linear spherical guide slide block 1208, trilinear spherical guide 1209, trilinear spherical guide slide block 1210, the 4th linear spherical guide 1211, the 4th linear spherical guide slide block 1212, work top 1213, support 1214, the first grating chi main body 1215, first grating reading head 1216, first upper limit position switch 1217, first lower position switch 1218 and the first zero-bit switch 1219.
Described first worm-gear speed reducer 1202 is fixed on the described support 1214, and the input shaft of described first worm-gear speed reducer 1202 is connected at axial restraint with the output shaft of described first stepper motor 1201; The output shaft of described first worm-gear speed reducer 1202 is connected with described first ball-screw, 1203 axial restraints; The bottom that described first ball nut that is used with described first ball-screw 1203 and sleeve 1204 vertical fixing are installed in described work top 1213; The described first linear spherical guide 1205, the described second linear spherical guide 1207, described trilinear spherical guide 1209, the described the 4th linear spherical guide 1211 are fixedly mounted on the bottom of work top respectively abreast; The described first linear spherical guide slide block 1206, the described second linear spherical guide slide block 1208, described trilinear spherical guide slide block 1210, the described the 4th linear spherical guide slide block 1212 is installed in parallel in respectively on the support 1214, and the described first linear spherical guide 1205, the described second linear spherical guide 1207, described trilinear spherical guide 1209, the described the 4th linear spherical guide 1211 is installed in the described first linear spherical guide slide block 1206 respectively, the described second linear spherical guide slide block 1208, described trilinear spherical guide slide block 1210, in the described the 4th linear spherical guide slide block 1212; The described first grating chi main body, 1215 vertical fixing are installed in the bottom of described work top 1213, described first grating reading head 1216 that is used with the described first grating chi main body 1215 is fixed on the described support 1214, and installs face-to-face with the described first grating chi main body 1215; Described first upper limit position switch 1217 is fixed on the top of described support 1214, and described first lower position switch 1218 is fixed on the bottom of described support 1214, and the described first zero-bit switch 1219 is fixed on the centre of described support 1214.
Described secondary lifting table 1300 comprises second stepper motor 1301, second worm-gear speed reducer 1302, second ball-screw 1303, second ball nut and sleeve 1304, the first cylinder spherical guide 1305, the first cylinder ball slide block 1306, the second cylinder spherical guide 1307, the second cylinder ball slide block 1308, the first mobile guide piece 1309, auxiliary engine bed 1310, the second grating chi main body 1311, second grating reading head 1312, second upper limit position switch 1313, second lower position switch 1314 and the second zero-bit switch 1315.
Described second worm-gear speed reducer 1302 is vertically fixed on the described auxiliary engine bed 1310, the input shaft of described second worm-gear speed reducer 1302 adopts axial restraint to be connected with described second stepper motor 1301, and the output terminal of described second worm-gear speed reducer 1302 adopts axial restraint to be connected with described second ball-screw 1303; Described second ball-screw 1303 is installed in described second ball nut and the sleeve 1304; Described first cylinder spherical guide 1305 and 1307 parallel being fixedly mounted on the described auxiliary engine bed 1310 of the described second cylinder spherical guide; And described first cylinder spherical guide 1305 and the described second cylinder spherical guide 1307 are respectively installed in described first cylinder ball slide block 1306 and the described second cylinder ball slide block 1308; Described first cylinder ball slide block 1306 and the described second cylinder ball slide block 1308 are fixed on the described first mobile guide piece 1309; The described first mobile guide piece 1309 is fixed on described second ball nut and the sleeve 1304; The described second grating chi main body 1311 is installed on the described auxiliary engine bed 1310, described second grating reading head 1312 that is used with the described second grating chi main body 1311 is fixed on the described first mobile guide piece 1309, and installs face-to-face with the described second grating chi main body 1311; Described second upper limit position switch 1313 is fixed on the top of described auxiliary engine bed 1310, and described second lower position switch 1314 is fixed on the bottom of described auxiliary engine bed 1310, and the described second zero-bit switch 1315 is fixed on the centre of described auxiliary engine bed 1310.
Described reflection lifting table 2300 comprises the 3rd stepper motor 2301, the 3rd worm-gear speed reducer 2302, the 3rd ball-screw 2303, the 3rd ball nut and sleeve 2304, three cylindrical spherical guide 2305, three cylindrical ball slide block 2306, the 4th cylinder spherical guide 2307, the 4th cylinder ball slide block 2308, the second mobile guide piece 2309, reflection support 2310, the 3rd grating chi main body 2311, the 3rd grating reading head 2312, the 3rd upper limit position switch 2313, the 3rd lower position switch 2314 and the 3rd zero-bit switch 2315.
Described the 3rd worm-gear speed reducer 2302 is vertically fixed on the described reflection support 2310, the input shaft of described the 3rd worm-gear speed reducer 2302 adopts axial restraint to be connected with described the 3rd stepper motor 2301, and the output shaft of described the 3rd worm-gear speed reducer 2302 adopts axial restraint to be connected with described the 3rd ball-screw 2303; Described the 3rd ball-screw 2303 is installed in described the 3rd ball nut and the sleeve 2304; Described three cylindrical spherical guide 2305 and 2307 parallel being fixedly mounted on the described reflection support 2310 of described the 4th cylinder spherical guide; And described three cylindrical spherical guide 2305 and described the 4th cylinder spherical guide 2307 are respectively installed in described three cylindrical ball slide block 2306 and described the 4th cylinder ball slide block 2308; Described three cylindrical ball slide block 2306 and described the 4th cylinder ball slide block 2308 are fixed on the described second mobile guide piece 2309; The described second mobile guide piece 2309 is fixed on described the 3rd ball nut and the sleeve 2304; Described the 3rd grating chi main body 2311 is installed on the described reflection support 2310, described the 3rd grating reading head 2312 that is used with described the 3rd grating chi main body 2311 is fixed on the described second mobile guide piece 2309, and installs face-to-face with described the 3rd grating chi main body 2311; Described the 3rd upper limit position switch 2313 is fixed on the top of described reflection support 2310, described the 3rd lower position switch 2314 is fixed on the bottom of described reflection support 2310, and described the 3rd zero-bit switch 2315 is fixed on the centre of described reflection support 2310.
Adjusting mechanism of the present utility model can be adjusted the position of described slit and neutron tof tube accurately, described incident elevating mechanism 1 and reflection elevating mechanism 2 can realize in the process that moving up and down of above-mentioned main lifting table 1200, secondary lifting table 1300 and reflection lifting table 2300 high precision changes the incident angle and the reflection angle of neutron beam, obtain high-resolution Scattering of Vector, and the ranges of incidence angles of neutron beam reaches-5 °～9 °, the reflection angle scope of neutron beam reaches-5 °～9 °, makes the Scattering of Vector scope of measuring strengthen.Simultaneously, in going into the reflection angle scope, sample can be aimed at neutron beam all the time.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the structural representation of the neutron beam incident angle of adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of horizontal sample of the present utility model when being 0 °, and A is a front view, and B is a vertical view.
Fig. 2 is the structural representation of the neutron beam incident angle of adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of horizontal sample of the present utility model when changing Δ θ, and A is a front view, and B is a vertical view.
Fig. 3 is a main lifting table structural representation shown in Figure 2, and A is a right view, and B is a front view, and C is a left view.
Fig. 4 is a secondary lifting table structural representation shown in Figure 2, and A is a right view, and B is a front view.
Fig. 5 is a reflection lifting table structural representation shown in Figure 2, and A is a front view, and B is a left view.
Fig. 6 is an automatically controlled flow chart illustration of the present utility model.
Reference numeral
1. incident elevating mechanism 2. reflects elevating mechanisms 3. first entrance slit seats
4. incident neutron tof tube 5. second entrance slit seats 6. first reflect slit base
7. reflected neutron tof tube 8. second reflects slit base 9. samples
10. sub-light source 12. detecting units in the platform 11.
1100. first spherical plain bearing rod end is to 1200. main lifting tables
1300. secondary lifting table 1400.Y shape sway brace
1500. the first decussation roller V-type line slideway auxiliary, 1600. second spherical plain bearing rod ends
2100. the 3rd spherical plain bearing rod end 2200. second decussation roller V-type line slideway auxiliaries
2300. reflection lifting table 2400. reflection sway braces
2500. bearing support block 1201. first stepper motors
1202. first worm-gear speed reducer, 1203. first ball-screws
1204. first ball nut and sleeve 1205. first linear spherical guides
1206. the first linear spherical guide slide block 1207. second linear spherical guides
1208. the second linear spherical guide slide block 1209. trilinear spherical guides
1210. trilinear spherical guide slide block 1211. the 4th linear spherical guide
1212. the 4th linear spherical guide slide block 1213. work tops
1214. support 1215. first grating chi main bodys
1216. first grating reading head, 1217. first upper limit position switch
1218. first lower position switch, 1219. first zero-bit switches
1301. second stepper motor, 1302. second worm-gear speed reducers
1303. second ball-screw, 1304. second ball nut and sleeves
1305. the first cylinder spherical guide, 1306. first cylinder ball slide blocks
1307. the second cylinder spherical guide, 1308. second cylinder ball slide blocks
1309. the first mobile guide piece, 1310. auxiliary engine beds
1311. the second grating chi main body, 1312. second grating reading heads
1313. second upper limit position switch, 1314. second lower position switch
1315. the second zero-bit switch 2301. the 3rd stepper motor
2302. the 3rd worm-gear speed reducer 2303. the 3rd ball-screw
2304. the 3rd ball nut and sleeve 2305. three cylindrical spherical guides
2306. three cylindrical ball slide block 2307. the 4th cylinder spherical guide
2308. the 4th cylinder ball slide block 2309. second mobile guide pieces
2310. reflection support 2311. the 3rd grating chi main body
2312. the 3rd grating reading head 2313. the 3rd upper limit position switch
2314. the 3rd lower position switch 2315. the 3rd zero-bit switch
Embodiment
See also Fig. 1～6.The adjusting mechanism of the neutron light path of horizontal sample how much neutron reflection spectrometers comprises along the optical path direction of incident neutron bundle and is fixedly mounted on incident elevating mechanism 1 and reflection elevating mechanism 2 on the platform 10 successively.The incident angle of neutron beam and the adjustment process of reflection angle are described in the concrete operations of adjusting mechanism that below will be by the neutron light path.
(1) incident angle of neutron beam is 0 ° a adjustment process
Described incident elevating mechanism 1 comprise have first spherical plain bearing rod end that can realize the sliding bearing structure that supports and rotate to 1100, be vertically fixed on main lifting table 1200 and secondary lifting table 1300, Y shape sway brace 1400 (have 2 back shafts in Y shape divergent ends, the other end is the back up pad of strip), the first decussation roller V-type line slideway auxiliary 1500 and second spherical plain bearing rod end 1600 on the platform 10.
Described first spherical plain bearing rod end is made up of two identical spherical plain bearing rod ends 1100, first spherical plain bearing rod end is vertically fixed on the work top 1213 of described main lifting table 1200 rod end of two spherical plain bearing rod ends of 1100, and first spherical plain bearing rod end adopts interference fit to be connected respectively with 2 back shafts of described Y shape sway brace 1400 respectively to 2 oscillating bearings of 1100; The back up pad of Y shape sway brace 1400 is fixed on the slide block on the described first decussation roller V-type line slideway auxiliary 1500; The line slideway of the described first decussation roller V-type line slideway auxiliary 1500 is fixed on the rod end of described second spherical plain bearing rod end 1600, and second ball nut on the oscillating bearing of described second spherical plain bearing rod end 1600 and the secondary lifting table 1300 and sleeve 1304 adopt the bearing pin interference fit to be connected.
Optical path direction along the incident neutron bundle, on the back up pad of described Y shape sway brace 1400, be installed with the first entrance slit seat 3 successively, profile length and width height is of a size of 550mm * 55mm * 55mm, and the internal side hole dimension is the incident neutron tof tube 4 that is shaped as rectangular hollow tubular and the second entrance slit seat 5 of 50mm * 50mm.
On the described first entrance slit seat 3 an end outer round surface is installed vertically and is processed with plus thread, and other end outer round surface is processed with the first positive and negative threaded rod of the round bar structure of left-hand thread, the plus thread end of the described first positive and negative threaded rod is equipped with incident first light barrier by being threaded, the left-hand thread end is equipped with incident second light barrier by being threaded; The slit that forms between the upper edge of the lower edge of described incident second light barrier and described incident first light barrier is first entrance slit.The gap size of described first entrance slit can be regulated between 0 to 20mm.
On the described second entrance slit seat 5 an end outer round surface is installed vertically and is processed with plus thread, and other end outer round surface is processed with the second positive and negative threaded rod of the round bar structure of left-hand thread, the plus thread end of the described second positive and negative threaded rod is equipped with incident the 3rd light barrier by being threaded, the left-hand thread end is equipped with incident the 4th light barrier by being threaded; The slit that forms between the upper edge of the lower edge of described incident the 4th light barrier and described incident the 3rd light barrier is second entrance slit.The gap size of described second entrance slit can be regulated between 0 to 20mm.
Described reflection elevating mechanism 2 comprises the 3rd spherical plain bearing rod end 2100, the second decussation roller V-type line slideway auxiliary 2200, be vertically fixed on reflection lifting table 2300, the reflection sway brace 2400 on the platform 10 and have the bearing support block 2500 of bearing.Described reflection sway brace 2400 is that an end has rotating shaft, and the other end is a plane support plate structure.
Bearing on rotating shaft on the described reflection sway brace 2400 and the described bearing support block 2500 adopts interference fit to be connected, slide block on the plane support plate structure end of described reflection sway brace 2400 and the described second decussation roller V-type line slideway auxiliary 2200 is fixed, the guide rail of the described second decussation roller V-type line slideway auxiliary 2200 is fixed on the rod end of described the 3rd spherical plain bearing rod end 2100, and the oscillating bearing of described the 3rd spherical plain bearing rod end 2100 is connected by the bearing pin interference fit with the 3rd ball nut and sleeve 2304 on the described reflection lifting table 2300; Bearing support block 2500 is fixed on the bracing frame.
Optical path direction along the reflected neutron bundle fixedly mounts the first reflection slit base 6 successively at the upper surface that reflects the reflection sway brace 2400 on the elevating mechanism 2, (total length is 1680mm to be shaped as the hollow shape reflected neutron tof tube 7 of rectangular important actor shape, the wide height of small end profile is of a size of 83mm * 58mm, the port sizes of small end is 75mm * 50mm, the wide height of big end profile is of a size of 83mm * 120mm, the port sizes of big end is 75mm * 112mm), and the small end of described reflected neutron tof tube 7 is positioned at the described first reflection slit base 6 on one side, with the fixed installation second reflection slit base 8.
On the described first reflection slit base 6 an end outer round surface is installed vertically and is processed with plus thread, and other end outer round surface is processed with the 3rd positive and negative threaded rod of the round bar structure of left-hand thread, the plus thread end of described the 3rd positive and negative threaded rod is equipped with reflection first light barrier by being threaded, the left-hand thread end is equipped with reflection second light barrier by being threaded; The slit that forms between the upper edge of the lower edge of described reflection second light barrier and described reflection first light barrier is the first reflection slit.The gap size of the described first reflection slit can be regulated between 0 to 10mm.
On the described second reflection slit base 8 on the described reflection elevating mechanism 2 an end outer round surface is installed vertically and is processed with plus thread, and other end outer round surface is processed with the 4th positive and negative threaded rod of the round bar structure of left-hand thread, the plus thread end of described the 4th positive and negative threaded rod is equipped with reflection the 3rd light barrier by being threaded, the left-hand thread end is equipped with reflection the 4th light barrier by being threaded; The slit that forms between the upper edge of the lower edge of described reflection the 4th light barrier and described reflection the 3rd light barrier is the second reflection slit.The gap size of the described second reflection slit can be regulated between 0 to 20mm.
The wide high size of above-mentioned light barrier is 165mm * 50mm, thick 1.5mm; The linearity of the last lower edge of above-mentioned all light barriers is 0.01mm.
(2) incident angle of neutron beam is 9 ° a adjustment process
Below two groups of (a) and (b) about incident elevating mechanism 1 and the part dimension of reflection elevating mechanism 2 and mutually mutual edge distance be basis in the incident angle adjustment process:
(a) in incident elevating mechanism 1, the center of described sample 9 is 2000mm to the horizontal range of middle sub-light source 11; Horizontal range from the center of described sample 9 to the bearing center of described second spherical plain bearing rod end 1600 is 734mm; Vertical range from the center line of described incident neutron tof tube 4 to the bearing center of described second spherical plain bearing rod end 1600 is 394mm.
(b) in reflection elevating mechanism 2, the center of described sample 9 is 2000mm to the horizontal range at the rotating shaft center of described bearing support block 2500; Horizontal range from the bearing center of described the 3rd spherical plain bearing rod end 2100 to the rotating shaft center of described bearing support block 2500 is 1508mm.Vertical range from the center line of described reflected neutron tof tube 7 to the bearing center of described the 3rd spherical plain bearing rod end 2100 is 347mm.
Incident angle for non-0 ° neutron beam, the incident neutron bundle that first entrance slit and second entrance slit limit incides on the sample through incident neutron tof tube 4, and the reflected neutron bundle limits the detecting unit 12 that arrives appointment via reflected neutron tof tube 7 by the first reflection slit and the second reflection slit.
As shown in Figure 2, make Δ θ=9 °.The incident angle of neutron beam changes Δ θ=9 °, and the reflection angle of neutron beam also changes Δ θ=9 °, neutron beam is correctly reflected enter detecting unit 12.Therefore how much neutron reflection spectrometers of horizontal sample will be finished the adjustment of neutron light path by the operating process of two steps.
At first tell about the adjustment of the incident elevating mechanism 1 that changes the incident neutron bundle.For the incident angle that makes neutron beam changes Δ θ=9 °, can determine that according to the movement locus Equation for Calculating main lifting table 1200 needs to reduce Δ h
1=316.97mm, secondary lifting table 1300 needs to reduce Δ h
2=205.43mm.
The structure of main lifting table 1200 as shown in Figure 3, concrete automatically controlled block diagram is seen shown in Figure 6.Described main lifting table 1200 comprises first stepper motor 1201, first worm-gear speed reducer 1202, first ball-screw 1203, first ball nut and sleeve 1204, the first linear spherical guide 1205, the first linear spherical guide slide block 1206, the second linear spherical guide 1207, the second linear spherical guide slide block 1208, trilinear spherical guide 1209, trilinear spherical guide slide block 1210, the 4th linear spherical guide 1211, the 4th linear spherical guide slide block 1212, work top 1213, support 1214, the first grating chi main body 1215, first grating reading head 1216, first upper limit position switch 1217, first lower position switch 1218 and the first zero-bit switch 1219.
Described first worm-gear speed reducer 1202 is fixed on the described support 1214, and the input shaft of described first worm-gear speed reducer 1202 is connected at axial restraint with the output shaft of described first stepper motor 1201; The output shaft of described first worm-gear speed reducer 1202 is connected with described first ball-screw, 1203 axial restraints; The bottom that described first ball nut that is used with described first ball-screw 1203 and sleeve 1204 vertical fixing are installed in described work top 1213; The described first linear spherical guide 1205, the described second linear spherical guide 1207, described trilinear spherical guide 1209 and the described the 4th linear spherical guide 1211 are fixedly mounted on the bottom of work top respectively abreast; The described first linear spherical guide slide block 1206, the described second linear spherical guide slide block 1208, described trilinear spherical guide slide block 1210 and the described the 4th linear spherical guide slide block 1212 are installed in parallel in respectively on the support 1214, and the described first linear spherical guide 1205, the described second linear spherical guide 1207, described trilinear spherical guide 1209 and the described the 4th linear spherical guide 1211 are installed in the described first linear spherical guide slide block 1206 respectively, the described second linear spherical guide slide block 1208, in described trilinear spherical guide slide block 1210 and the described the 4th linear spherical guide slide block 1212; The described first grating chi main body, 1215 vertical fixing are installed in the bottom of described work top 1213, described first grating reading head 1216 that is used with the described first grating chi main body 1215 is fixed on the described support 1214, and installs face-to-face with the described first grating chi main body 1215; Described first upper limit position switch 1217 is fixed on the top of described support 1214, and described first lower position switch 1218 is fixed on the bottom of described support 1214, and the described first zero-bit switch 1219 is fixed on the centre of described support 1214.
In main lifting table 1200 adjustment processes, at first be that industrial computer sends instruction by driver I to first stepper motor 1201,1201 rotations of first stepper motor drive first worm-gear speed reducer 1202 and rotate.The output shaft of first worm-gear speed reducer 1202 drives first ball-screw 1203 and rotates.Cause first ball nut that cooperates with first ball-screw 1203 and sleeve 1204 and work top 1213 to move downward, first linear spherical guide 1205, the second linear spherical guide 1207, trilinear spherical guide 1209 and the 4th linear spherical guide 1211 that are installed in parallel in work top 1213 belows move downward along first linear spherical guide slide block 1206, the first linear spherical guide slide block 1208, trilinear spherical guide slide block the 1210 and the 4th linear spherical guide slide block 1212 that are installed in parallel on the support 1214 respectively.
In the process that main lifting table 1200 moves downward, first grating ruler reading head 1216 carries out displacement readings along the first grating chi main body 1215 and feeds back to industrial computer in real time, realizes closed-loop control, accurately locatees precision ± 3 μ m; First upper limit position switch 1217 and first lower position switch 1218 in time feed back to industrial computer with signal, and movement travel is protected automatically; The first zero-bit optoelectronic switch 1219 is used for the zero-bit record, and realizes repeatedly the backhaul gap elimination after the back and forth movement.
The structure of secondary lifting table 1300 is referring to Fig. 4.Described secondary lifting table 1300 comprises second stepper motor 1301, second worm-gear speed reducer 1302, second ball-screw 1303, second ball nut and sleeve 1304, the first cylinder spherical guide 1305, the first cylinder ball slide block 1306, the second cylinder spherical guide 1307, the second cylinder ball slide block 1308, the first mobile guide piece 1309, auxiliary engine bed 1310, the second grating chi main body 1311, second grating reading head 1312, second upper limit position switch 1313, second lower position switch 1314 and the second zero-bit switch 1315.
Described second worm-gear speed reducer 1302 is vertically fixed on the described auxiliary engine bed 1310, the input shaft of described second worm-gear speed reducer 1302 adopts axial restraint to be connected with described second stepper motor 1301, and the output terminal of described second worm-gear speed reducer 1302 adopts axial restraint to be connected with described second ball-screw 1303; Described second ball-screw 1303 is installed in described second ball nut and the sleeve 1304; Described first cylinder spherical guide 1305 and 1307 parallel being fixedly mounted on the described auxiliary engine bed 1310 of the described second cylinder spherical guide; And described first cylinder spherical guide 1305 and the described second cylinder spherical guide 1307 are respectively installed in described first cylinder ball slide block 1306 and the described second cylinder ball slide block 1308; Described first cylinder ball slide block 1306 and the described second cylinder ball slide block 1308 are fixed on the described first mobile guide piece 1309; The described first mobile guide piece 1309 is fixed on described second ball nut and the sleeve 1304; The described second grating chi main body 1311 is installed on the described auxiliary engine bed 1310, described second grating reading head 1312 that is used with the described second grating chi main body 1311 is fixed on the described first mobile guide piece 1309, and installs face-to-face with the described second grating chi main body 1311; Described second upper limit position switch 1313 is fixed on the top of described auxiliary engine bed 1310, and described second lower position switch 1314 is fixed on the bottom of described auxiliary engine bed 1310, and the described second zero-bit switch 1315 is fixed on the centre of described auxiliary engine bed 1310.
In the adjustment process of secondary lifting table 1300, industrial computer sends instruction by driver II to second stepper motor 1301, and second stepper motor 1301 rotates, and drives second worm-gear speed reducer 1302 and rotates.The output shaft of second worm-gear speed reducer 1302 drives second ball-screw 1303 and rotates.Second ball nut and the sleeve 1304 that cause cooperating with second ball-screw 1303 move downward, and move downward thereby drive the first mobile guide piece 1309.The first cylinder ball slide block 1306, the second cylinder ball slide block 1308 that are fixed on the first mobile guide piece 1309 move downward along the first cylinder spherical guide 1305, the second cylinder spherical guide 1307 respectively.
Described secondary lifting table 1300 moves downward in the process, and second grating ruler reading head 1312 carries out displacement readings along the second grating chi main body 1311 and feeds back to industrial computer in real time, realizes closed-loop control, accurately locatees precision ± 3 μ m; Second upper limit position switch 1313 and second lower position switch 1314 in time feed back to industrial computer with signal, and movement travel is protected automatically; The second zero-bit optoelectronic switch 1315 is used for the zero-bit record, and realizes repeatedly the backhaul gap elimination after the back and forth movement.
Move downward in the process at main lifting table 1200 and secondary lifting table 1300, Y shape sway brace 1400 rotates 1100 center of rotation along first spherical plain bearing rod end that is vertically mounted on the work top 1213, center along middle sub-light source 11 rotates simultaneously, the first decussation roller V-type line slideway auxiliary 1500 is done in the horizontal direction and is followed mobilely, drives second spherical plain bearing rod end 1600 vertical with the first decussation roller unit 1500 and rotates in real time.After 1300 motions of main lifting table 1200 and secondary lifting table put in place, Y shape sway brace 400 rotation Δ θ, the incident angle of the neutron beam that first entrance slit and second entrance slit limit changes Δ θ=9 °, incident neutron tof tube 4 rotation Δ θ=9 °.Hereto, finished 1 incident angle adjustment of incident elevating mechanism.
Begin to describe the operation of the reflection elevating mechanism 2 that changes the reflected neutron bundle below.Detailed process is as follows:
Change Δ θ=9 ° corresponding to the incident angle of neutron beam, the reflection angle of neutron beam changes Δ θ=9 °, can determine that according to the movement locus equation reflection lifting table 2300 needs to reduce Δ h
3=243.17mm.The structure of reflection lifting table 2300 as shown in Figure 5.Automatically controlled block diagram is with reference to shown in Figure 6.Described reflection lifting table 2300 comprises the 3rd stepper motor 2301, the 3rd worm-gear speed reducer 2302, the 3rd ball-screw 2303, the 3rd ball nut and sleeve 2304, three cylindrical spherical guide 2305, three cylindrical ball slide block 2306, the 4th cylinder spherical guide 2307, the 4th cylinder ball slide block 2308, the second mobile guide piece 2309, reflection support 2310, the 3rd grating chi main body 2311, the 3rd grating reading head 2312, the 3rd upper limit position switch 2313, the 3rd lower position switch 2314 and the 3rd zero-bit switch 2315.
Described the 3rd worm-gear speed reducer 2302 is vertically fixed on the described reflection support 2310, the input shaft of described the 3rd worm-gear speed reducer 2302 adopts axial restraint to be connected with described the 3rd stepper motor 2301, and the output shaft of described the 3rd worm-gear speed reducer 2302 adopts axial restraint to be connected with described the 3rd ball-screw 2303; Described the 3rd ball-screw 2303 is installed in described the 3rd ball nut and the sleeve 2304; Described three cylindrical spherical guide 2305 and 2307 parallel being fixedly mounted on the described reflection support 2310 of described the 4th cylinder spherical guide; And described three cylindrical spherical guide 2305 and described the 4th cylinder spherical guide 2307 are respectively installed in described three cylindrical ball slide block 2306, described the 4th cylinder ball slide block 2308; Described three cylindrical ball slide block 2306 and described the 4th cylinder ball slide block 2308 are fixed on the described second mobile guide piece 2309; The described second mobile guide piece 2309 is fixed on described the 3rd ball nut and the sleeve 2304; Described the 3rd grating chi main body 2311 is installed on the described reflection support 2310, described the 3rd grating reading head 2312 that is used with described the 3rd grating chi main body 2311 is fixed on the described second mobile guide piece 2309, and installs face-to-face with described the 3rd grating chi main body 2311; Described the 3rd upper limit position switch 2313 is fixed on the top of described reflection support 2310, described the 3rd lower position switch 2314 is fixed on the bottom of described reflection support 2310, and described the 3rd zero-bit switch 2315 is fixed on the centre of described reflection support 2310.
Industrial computer sends instruction by driver III to the 3rd stepper motor 2301, and the 3rd stepper motor 2301 rotates, and drives the 3rd worm-gear speed reducer 2302 and rotates.The output shaft of the 3rd worm-gear speed reducer 2302 drives the 3rd ball-screw 2303 and rotates.The 3rd ball nut and the sleeve 2304 that cause cooperating with the 3rd ball-screw 2303 move downward, and drive the second mobile guide piece 2309 and move downward.Simultaneously, three cylindrical ball slide block 2306, the 4th cylinder ball slide block 2308 that is fixed on the second mobile guide piece 2309 moves downward along three cylindrical spherical guide 2305, the 4th cylinder spherical guide 2307 respectively.
In the process that described reflection lifting table 2300 moves downward, the 3rd grating ruler reading head 2312 carries out displacement readings along the 3rd grating chi main body 2311 and in time feeds back to industrial computer, realizes closed-loop control, accurately locatees precision ± 3 μ m; The 3rd upper limit position switch 2313 and the 3rd lower position switch 2314 in time feed back to industrial computer with signal, and movement travel is protected automatically; The 3rd zero-bit optoelectronic switch 2315 is used for the zero-bit record, and realizes repeatedly the backhaul gap elimination after the back and forth movement.
Along with reflection lifting table 2300 moves downward, reflection sway brace 2400 rotates around the rotation end (being the center of detecting unit) of bearing support block 2500, the second decussation roller V-type line slideway auxiliary of installing in reflection sway brace 2400 parallel beneath 2200 is done in the horizontal direction and is followed motion, drives with the second decussation roller V-type line slideway auxiliary, 2200 vertically arranged the 3rd spherical plain bearing rod ends 2100 and rotates in real time.After 2300 motions of reflection lifting table put in place, reflection sway brace 2400 is around the rotation end of bearing support block 2500 rotation Δ θ=9 °, the reflection angle change Δ θ of the neutron beam that the first reflection slit and the second reflection slit limit=9 °, reflected neutron tof tube 7 rotation Δ θ=9 °.
(3) incident angle of neutron beam is-5 ° a adjustment process
When the incident angle of neutron beam/reflection angle changes Δ θ=-5 °, promptly main lifting table 1200 rising Δ h can be determined according to the movement locus equation in Δ θ＜0
1=174.98mm, secondary lifting table 1300 rising Δ h
2The displacement that=109.26mm and reflection lifting table 2300 make progress is Δ h
3=130.61mm.The incident angle of adjustment process and front is that positive examples of implementation are basic identical, only is to have changed the control direction of motor rotation to realize that each lifting table moves upward, the final adjustment that realizes-5 ° neutron beam incident angle.
(4) adjustment process of incident and exit slit
Adjustment process with the first entrance slit size is that example illustrates its adjustment process.On the first entrance slit seat 3 of the adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of horizontal sample the first positive and negative threaded rod is installed vertically.Plus thread end at the first positive and negative threaded rod utilizes thread connecting mode that incident first light barrier is installed.The left-hand thread end of the first positive and negative threaded rod utilizes thread connecting mode that incident second light barrier is installed.Form described first entrance slit between the upper edge of the lower edge of incident second light barrier and incident first light barrier.The material of incident first light barrier and incident second light barrier all is preferably boron carbide; The wide high size of four light barriers of incident end and four light barriers of reflection end is 165mm * 50mm.In order to guarantee the width consistance of described each slit in the utility model, the linearity of the last lower edge of above-mentioned all light barriers is 0.01mm.
When needs are transferred big first entrance slit, be reference with the plus thread end of the first positive and negative threaded rod, allow the first positive and negative threaded rod clockwise rotate.At this moment, incident first light barrier can move down, and incident second light barrier can move up, and causes first entrance slit to become big, until arriving maximum spacing 20mm.Otherwise, allow the first positive and negative threaded rod rotate counterclockwise, cause first entrance slit to diminish, until the contact incident second light barrier lower edge, the incident first light barrier upper edge, this moment, slit width was 0mm.As seen, the size of first entrance slit can be adjustable between 0 to 20mm.
The size adjustment process that second entrance slit, the first reflection slit and second reflect slit is identical with first entrance slit.
Claims (10)
1. the adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of a horizontal sample comprises along the optical path direction of incident neutron bundle being fixedly mounted on the incident elevating mechanism (1) on the platform (10) successively and reflecting elevating mechanism (2); It is characterized in that:
Described incident elevating mechanism (1) comprise first spherical plain bearing rod end to (1100), be vertically fixed on main lifting table (1200) and secondary lifting table (1300), Y shape sway brace (1400), the first decussation roller V-type line slideway auxiliary (1500) and second spherical plain bearing rod end (1600) on the platform (10);
Described first spherical plain bearing rod end is made up of two identical spherical plain bearing rod ends (1100), first spherical plain bearing rod end is vertically fixed on the work top (1213) of described main lifting table (1200) the rod end of two spherical plain bearing rod ends of (1100), and first spherical plain bearing rod end adopts interference fit to be connected respectively with 2 back shafts of described Y shape sway brace (1400) respectively to 2 oscillating bearings of (1100); The back up pad of Y shape sway brace (1400) is fixed on the slide block on the described first decussation roller V-type line slideway auxiliary (1500); The line slideway of the described first decussation roller V-type line slideway auxiliary (1500) is fixed on the rod end of described second spherical plain bearing rod end (1600), and second ball nut on the oscillating bearing of described second spherical plain bearing rod end (1600) and the secondary lifting table (1300) and sleeve (1304) adopt the bearing pin interference fit to be connected;
Along the optical path direction of incident neutron bundle, on the back up pad of described Y shape sway brace (1400), be installed with the first entrance slit seat (3) successively, the incident neutron tof tube (4) and the second entrance slit seat (5);
On the described first entrance slit seat (3) the first positive and negative threaded rod is installed vertically, the plus thread end of the described first positive and negative threaded rod is equipped with incident first light barrier by being threaded, and the left-hand thread end is equipped with incident second light barrier by being threaded; The slit that forms between the upper edge of the lower edge of described incident second light barrier and described incident first light barrier is first entrance slit;
On the described second entrance slit seat (5) the second positive and negative threaded rod is installed vertically, the plus thread end of the described second positive and negative threaded rod is equipped with incident the 3rd light barrier by being threaded, and the left-hand thread end is equipped with incident the 4th light barrier by being threaded; The slit that forms between the upper edge of the lower edge of described incident the 4th light barrier and described incident the 3rd light barrier is second entrance slit;
Described reflection elevating mechanism (2) comprises the 3rd spherical plain bearing rod end (2100), the second decussation roller V-type line slideway auxiliary (2200), be vertically fixed on reflection lifting table (2300), the reflection sway brace (2400) on the platform (10) and have the bearing support block (2500) of bearing;
Bearing on rotating shaft on the described reflection sway brace (2400) and the described bearing support block (2500) adopts interference fit to be connected, slide block on the plane support plate structure end of described reflection sway brace (2400) and the described second decussation roller V-type line slideway auxiliary (2200) is fixed, the guide rail of the described second decussation roller V-type line slideway auxiliary (2200) is fixed on the rod end of described the 3rd spherical plain bearing rod end (2100), and the oscillating bearing of described the 3rd spherical plain bearing rod end (2100) is connected by the bearing pin interference fit with the 3rd ball nut and sleeve (2304) on the described reflection lifting table (2300); Bearing support block (2500) is fixed on the bracing frame;
Optical path direction along the reflected neutron bundle fixedly mounts the first reflection slit base (6), reflected neutron tof tube (7) and the second reflection slit base (8) successively at the upper surface that reflects the reflection sway brace (2400) on the elevating mechanism (2);
On the described first reflection slit base (6) the 3rd positive and negative threaded rod is installed vertically, the plus thread end of described the 3rd positive and negative threaded rod is equipped with reflection first light barrier by being threaded, and the left-hand thread end is equipped with reflection second light barrier by being threaded; The slit that forms between the upper edge of the lower edge of described reflection second light barrier and described reflection first light barrier is the first reflection slit;
On the described second reflection slit base (8) on the described reflection elevating mechanism (2) the 4th positive and negative threaded rod is installed vertically, the plus thread end of described the 4th positive and negative threaded rod is equipped with reflection the 3rd light barrier by being threaded, the left-hand thread end is equipped with reflection the 4th light barrier by being threaded; The slit that forms between the upper edge of the lower edge of described reflection the 4th light barrier and described reflection the 3rd light barrier is the second reflection slit;
Described main lifting table (1200), secondary lifting table (1300) and reflection lifting table (2300) all are the physical construction with rising and down maneuver function that worm-and-wheel gear driven by stepper motors and ball screw assembly, are formed.
2. the adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of horizontal sample according to claim 1, it is characterized in that: described Y shape sway brace (1400) is to have 2 back shafts in Y shape divergent ends, and the other end is the back up pad of strip.
3. the adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of horizontal sample according to claim 1, it is characterized in that: the gap size of described first entrance slit is regulated between 0 to 20mm; The gap size of described second entrance slit is regulated between 0 to 20mm; The gap size of the described first reflection slit is regulated between 0 to 10mm; The gap size of the described second reflection slit is regulated between 0 to 20mm.
4. the adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of horizontal sample according to claim 1, it is characterized in that: the incident neutron tof tube (4) on the described incident elevating mechanism (1) is to be shaped as rectangular hollow tubular, its profile length and width height is of a size of 550mm * 55mm * 55mm, and the internal side hole dimension is 50mm * 50mm.
5. the adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of horizontal sample according to claim 1, it is characterized in that: the reflected neutron tof tube (7) on the described reflection elevating mechanism (2) is the hollow tubular that is shaped as rectangular important actor shape, and the small end of the hollow tubular of this rectangular important actor shape is positioned at the described first reflection slit base (6) on one side; The total length of described reflected neutron tof tube is 1680mm, and the wide height of small end profile is of a size of 83mm * 58mm, and the port sizes of small end is 75mm * 50mm, holds the wide height of profile to be of a size of 83mm * 120mm greatly, and the port sizes of big end is 75mm * 112mm.
6. the adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of horizontal sample according to claim 1, it is characterized in that: described reflection sway brace (2400) is that an end has rotating shaft, the other end is a plane support plate structure.
7. the adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of horizontal sample according to claim 1, it is characterized in that: be placed on the sample on the described main lifting table (1200), be positioned on the intersection point of vertical center line of neutron beam and described main lifting table, the center of described sample is 2000mm to the horizontal range of middle sub-light source (11); Horizontal range from the center of described sample to the bearing center of described second spherical plain bearing rod end is 734mm; Vertical range from the center line of described incident neutron tof tube to the bearing center of described second spherical plain bearing rod end is 394mm;
The center of described sample is 2000mm to the horizontal range at the rotating shaft center of described bearing support block; Horizontal range from the bearing center of described the 3rd spherical plain bearing rod end to the rotating shaft center of described bearing support block is 1508mm; Vertical range from the center line of described reflected neutron tof tube to the bearing center of described the 3rd spherical plain bearing rod end is 347mm.
8. the adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of horizontal sample according to claim 1, it is characterized in that: described main lifting table (1200) comprises first stepper motor (1201), first worm-gear speed reducer (1202), first ball-screw (1203), first ball nut and sleeve (1204), the first linear spherical guide (1205), the first linear spherical guide slide block (1206), the second linear spherical guide (1207), the second linear spherical guide slide block (1208), trilinear spherical guide (1209), trilinear spherical guide slide block (1210), the 4th linear spherical guide (1211), the 4th linear spherical guide slide block (1212), work top (1213), support (1214), the first grating chi main body (1215), first grating reading head (1216), first upper limit position switch (1217), first lower position switch (1218) and the first zero-bit switch (1219);
Described first worm-gear speed reducer (1202) is fixed on the described support (1214), and the input shaft of described first worm-gear speed reducer (1202) is connected at axial restraint with the output shaft of described first stepper motor (1201); The output shaft of described first worm-gear speed reducer (1202) is connected with described first ball-screw (1203) axial restraint; The bottom that described first ball nut that is used with described first ball-screw (1203) and sleeve (1204) vertical fixing are installed in described work top (1213); The described first linear spherical guide (1205), the described second linear spherical guide (1207), described trilinear spherical guide (1209), the described the 4th linear spherical guide (1211) are fixedly mounted on the bottom of work top respectively abreast; The described first linear spherical guide slide block (1206), the described second linear spherical guide slide block (1208), described trilinear spherical guide slide block (1210), the described the 4th linear spherical guide slide block (1212) is installed in parallel in respectively on the support (1214), and the described first linear spherical guide (1205), the described second linear spherical guide (1207), described trilinear spherical guide (1209), the described the 4th linear spherical guide (1211) is installed in the described first linear spherical guide slide block (1206) respectively, the described second linear spherical guide slide block (1208), described trilinear spherical guide slide block (1210), in the described the 4th linear spherical guide slide block (1212); Described first grating chi main body (1215) vertical fixing is installed in the bottom of described work top (1213), described first grating reading head (1216) that is used with the described first grating chi main body (1215) is fixed on the described support (1214), and installs face-to-face with the described first grating chi main body (1215); Described first upper limit position switch (1217) is fixed on the top of described support (1214), described first lower position switch (1218) is fixed on the bottom of described support (1214), and the described first zero-bit switch (1219) is fixed on the centre of described support (1214).
9. the adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of horizontal sample according to claim 1, it is characterized in that: described secondary lifting table (1300) comprises second stepper motor (1301), second worm-gear speed reducer (1302), second ball-screw (1303), second ball nut and sleeve (1304), the first cylinder spherical guide (1305), the first cylinder ball slide block (1306), the second cylinder spherical guide (1307), the second cylinder ball slide block (1308), the first mobile guide piece (1309), auxiliary engine bed (1310), the second grating chi main body (1311), second grating reading head (1312), second upper limit position switch (1313), second lower position switch (1314) and the second zero-bit switch (1315);
Described second worm-gear speed reducer (1302) is vertically fixed on the described auxiliary engine bed (1310), the input shaft of described second worm-gear speed reducer (1302) adopts axial restraint to be connected with described second stepper motor (1301), and the output terminal of described second worm-gear speed reducer (1302) adopts axial restraint to be connected with described second ball-screw (1303); Described second ball-screw (1303) is installed in described second ball nut and the sleeve (1304); Described first cylinder spherical guide (1305) and parallel being fixedly mounted on the described auxiliary engine bed (1310) of the described second cylinder spherical guide (1307); And described first cylinder spherical guide (1305) and the described second cylinder spherical guide (1307) are respectively installed in described first cylinder ball slide block (1306) and the described second cylinder ball slide block (1308); Described first cylinder ball slide block (1306) and the described second cylinder ball slide block (1308) are fixed on the described first mobile guide piece (1309);
The described first mobile guide piece (1309) is fixed on described second ball nut and the sleeve (1304); The described second grating chi main body (1311) is installed on the described auxiliary engine bed (1310), described second grating reading head (1312) that is used with the described second grating chi main body (1311) is fixed on the described first mobile guide piece (1309), and installs face-to-face with the described second grating chi main body (1311); Described second upper limit position switch (1313) is fixed on the top of described auxiliary engine bed (1310), described second lower position switch (1314) is fixed on the bottom of described auxiliary engine bed (1310), and the described second zero-bit switch (1315) is fixed on the centre of described auxiliary engine bed (1310).
10. the adjusting mechanism of the neutron light path of how much neutron reflection spectrometers of horizontal sample according to claim 1, it is characterized in that: described reflection lifting table (2300) comprises the 3rd stepper motor (2301), the 3rd worm-gear speed reducer (2302), the 3rd ball-screw (2303), the 3rd ball nut and sleeve (2304), three cylindrical spherical guide (2305), three cylindrical ball slide block (2306), the 4th cylinder spherical guide (2307), the 4th cylinder ball slide block (2308), the second mobile guide piece (2309), reflection support (2310), the 3rd grating chi main body (2311), the 3rd grating reading head (2312), the 3rd upper limit position switch (2313), the 3rd lower position switch (2314) and the 3rd zero-bit switch (2315);
Described the 3rd worm-gear speed reducer (2302) is vertically fixed on the described reflection support (2310), the input shaft of described the 3rd worm-gear speed reducer (2302) adopts axial restraint to be connected with described the 3rd stepper motor (2301), and the output shaft of described the 3rd worm-gear speed reducer (2302) adopts axial restraint to be connected with described the 3rd ball-screw (2303); Described the 3rd ball-screw (2303) is installed in described the 3rd ball nut and the sleeve (2304); Described three cylindrical spherical guide (2305) and parallel being fixedly mounted on the described reflection support (2310) of described the 4th cylinder spherical guide (2307); And described three cylindrical spherical guide (2305) and described the 4th cylinder spherical guide (2307) are respectively installed in described three cylindrical ball slide block (2306) and described the 4th cylinder ball slide block (2308); Described three cylindrical ball slide block (2306) and described the 4th cylinder ball slide block (2308) are fixed on the described second mobile guide piece (2309); The described second mobile guide piece (2309) is fixed on described the 3rd ball nut and the sleeve (2304); Described the 3rd grating chi main body (2311) is installed on the described reflection support (2310), described the 3rd grating reading head (2312) that is used with described the 3rd grating chi main body (2311) is fixed on the described second mobile guide piece (2309), and installs face-to-face with described the 3rd grating chi main body (2311); Described the 3rd upper limit position switch (2313) is fixed on the top of described reflection support (2310), described the 3rd lower position switch (2314) is fixed on the bottom of described reflection support (2310), and described the 3rd zero-bit switch (2315) is fixed on the centre of described reflection support (2310).
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| CN2011201059517U CN202066805U (en) | 2011-04-12 | 2011-04-12 | Adjusting mechanism of neutron optical path of horizontal sample geometric neutron reflection spectrum instrument |
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| CN2011201059517U CN202066805U (en) | 2011-04-12 | 2011-04-12 | Adjusting mechanism of neutron optical path of horizontal sample geometric neutron reflection spectrum instrument |
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| CN202066805U true CN202066805U (en) | 2011-12-07 |
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| CN2011201059517U Expired - Lifetime CN202066805U (en) | 2011-04-12 | 2011-04-12 | Adjusting mechanism of neutron optical path of horizontal sample geometric neutron reflection spectrum instrument |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735698A (en) * | 2011-04-12 | 2012-10-17 | 中国科学院化学研究所 | Adjusting mechanism for neutron optical paths of neutron reflectometer-horizontal sample geometry |
| CN109405774A (en) * | 2018-12-29 | 2019-03-01 | 中国原子能科学研究院 | A method of for measuring film thickness |
| CN112147669A (en) * | 2020-09-27 | 2020-12-29 | 四川科瑞达电子技术有限公司 | Neutron array detection mechanical platform and electromechanical control system |
| CN114352407A (en) * | 2020-10-12 | 2022-04-15 | 中国科学院理化技术研究所 | Star-arranged transmission system and control method |
-
2011
- 2011-04-12 CN CN2011201059517U patent/CN202066805U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735698A (en) * | 2011-04-12 | 2012-10-17 | 中国科学院化学研究所 | Adjusting mechanism for neutron optical paths of neutron reflectometer-horizontal sample geometry |
| CN102735698B (en) * | 2011-04-12 | 2014-08-13 | 中国科学院化学研究所 | Adjusting mechanism for neutron optical paths of neutron reflectometer-horizontal sample geometry |
| CN109405774A (en) * | 2018-12-29 | 2019-03-01 | 中国原子能科学研究院 | A method of for measuring film thickness |
| CN109405774B (en) * | 2018-12-29 | 2019-12-24 | 中国原子能科学研究院 | Method for measuring film thickness |
| CN112147669A (en) * | 2020-09-27 | 2020-12-29 | 四川科瑞达电子技术有限公司 | Neutron array detection mechanical platform and electromechanical control system |
| CN112147669B (en) * | 2020-09-27 | 2022-08-26 | 四川省工程装备设计研究院有限责任公司 | Neutron array detection mechanical platform and electromechanical control system |
| CN114352407A (en) * | 2020-10-12 | 2022-04-15 | 中国科学院理化技术研究所 | Star-arranged transmission system and control method |
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