CN106970363A - A kind of triaxial antennas test table system with low reflection characteristic - Google Patents
A kind of triaxial antennas test table system with low reflection characteristic Download PDFInfo
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- CN106970363A CN106970363A CN201710328578.3A CN201710328578A CN106970363A CN 106970363 A CN106970363 A CN 106970363A CN 201710328578 A CN201710328578 A CN 201710328578A CN 106970363 A CN106970363 A CN 106970363A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/10—Radiation diagrams of antennas
- G01R29/105—Radiation diagrams of antennas using anechoic chambers; Chambers or open field sites used therefor
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
A kind of triaxial antennas test table system with low reflection characteristic, it is made up of wobble shaft module, three parts of pitch axis module and azimuth axle component, azimuth axle component is arranged on microwave dark room ground by azimuth base, together with pitch axis module is connected firmly with screw by end flange face under pitching frame and orientation four point touching ball slewing bearing outer ring, together with wobble shaft module is connected firmly with screw by the upper surface of end flange face under rolling framework and pitching upper bracket；Load is arranged on rolling load installing plate, and rolling, pitching and orientation three degree of freedom rotary motion can be achieved, and can be accurately positioned on defined Angle Position, with it is practical, stably, it is reliable the characteristics of.
Description
Technical field
It is particularly a kind of with low anti-the present invention relates to a kind of triaxial antennas test table system with low reflection characteristic
The triaxial antennas turret systems of characteristic are penetrated, radar performance in microwave dark room is can be applied to and tests, be especially applicable to microwave dark room
The test of antenna or antenna house.
Background technology
Triaxial antennas test table is tested for simulating as test equipment important in a kind of radar antenna development process
The spatial attitude motion of product, and with good rotating accuracy, to ensure whole test system practicality, stability, reliable
Property, the effect of key is played in the development process of airborne radar.
Airborne radar and antenna house are the core components of aircraft, during using conventional aerial test table, antenna support
All made using metal material, and pitching shafting supporting form is U-shape structure, therefore before test must be in all of turntable
Exposed surface pastes substantial amounts of absorbing material, for electromagnetic wave absorption；To reduce the interference that reflection electromagnetic wave is brought, but this side
The reflection interference of electromagnetic wave can not be completely eliminated in method, still can influence the accuracy of radar antenna performance test.
Therefore, material and structure type have to improve to some extent used in radar antenna test table, could meet this
The demand of kind.
The content of the invention
Its purpose of the invention is that a kind of triaxial antennas test table system with low reflection characteristic of offer, can be achieved
Rolling, pitching and orientation three degree of freedom rotary motion, and can be accurately positioned on defined Angle Position, with practical, steady
Fixed, reliable the characteristics of.
The technical scheme realized above-mentioned purpose and taken, a kind of triaxial antennas test table system with low reflection characteristic
System, including wobble shaft module, pitch axis module and azimuth axle component,
The wobble shaft module includes load, rolling load installing plate, rolling band external tooth four point touching ball slewing bearing, rolling
Driving gear, rolling planetary reducer, rolling servomotor, rolling framework, the left end of rolling framework are fixed with rolling band external tooth
Four point touching ball slewing bearing, the upper end of rolling framework is fixed with rolling planetary reducer；The input shaft of rolling planetary reducer
Couple with the output shaft of rolling servomotor, the housing of rolling servomotor is solid with screw with the housing of rolling planetary reducer
Connection；Rolling planetary reducer output shaft fixes rolling driving gear, and rolling load installing plate is fixed on rolling 4 points of external tooth of band and connect
On the cycle surface for touching ball slewing bearing, tested load is fixed on rolling load installing plate；
The pitch axis module includes the right guide rail of pitching, pitching left rail, pitching upper bracket, pitching lower carriage, pitching sliding block
Support, elevation servo motor, pitching left end cap, pitching driving gear, pitching right angle reductor, pitching four-point contact ball turntable shaft
Hold, pitching right end cap, pitching main shaft, the right sliding block of pitching, pitching left slider, pitching frame, the left and right sides of pitching frame is installed
Have be separately installed with the right guide rail of pitching and pitching left rail, the right guide rail of pitching and pitching left rail working face the right sliding block of pitching and
Pitching left slider；Pitching slider bracket is fixed on the right sliding block of pitching and pitching left slider, and the upper end of pitching slider bracket is installed
There is pitching lower carriage, the upper surface of pitching lower carriage is provided with pitching upper bracket；The lower end of pitching slider bracket is provided with pitching
Right angle reductor, pitching four point touching ball slewing bearing, pitching left end cap and pitching right end cap, the input of pitching right angle reductor
End couples with the output end of elevation servo motor, and the housing of the housing and elevation servo motor of pitching right angle reductor is connected with screw
Connect, the output end of pitching right angle reductor is interior with pitching driving gear, pitching main shaft and pitching four point touching ball slewing bearing
Circle connection；
The azimuth axle component includes orientation deceleration machine support, orientation reductor pinboard, azimuth planetary reductor, orientation master
Moving gear, bearing servo motor, orientation dustproof cover for speed reducer, orientation four point touching ball slewing bearing, orientation spindle spacer, orientation
Angular contact ball bearing, side under bearing block, azimuth axis bearing end cap, bearing race gasket, bearing inner ring gasket, orientation
Angular contact ball bearing, orientation main shaft, azimuth base, orientation dust cover on position, the upper end of azimuth base are provided with 4 points of orientation and connect
Ball slewing bearing and orientation dust cover are touched, the right-hand member of azimuth base is provided with orientation deceleration machine support, in orientation deceleration machine support
Inside orientation reductor pinboard, azimuth planetary reductor and bearing servo motor are installed, orientation driving gear is arranged on
The output end of azimuth planetary reductor, the inside of azimuth base is provided with the side of being provided with inside azimuth axis bearing, azimuth axis bearing
Angular contact ball bearing, bearing race gasket, bearing inner ring gasket, azimuth axis on the lower angular contact ball bearing in position, orientation
Bearing end cap and orientation main shaft, orientation main shaft upper end are combined with orientation spindle spacer；
Azimuth axle component is arranged on microwave dark room ground by azimuth base, pitch axis module hold-carrying under pitching frame
Together with blue face and orientation four point touching ball slewing bearing outer ring are connected firmly with screw, wobble shaft module hold-carrying under rolling framework
Together with the upper surface of blue face and pitching upper bracket is connected firmly with screw；Load is arranged on rolling load installing plate, and rolling can be achieved
Turn, pitching and orientation three degree of freedom rotary motion, and can be accurately positioned on defined Angle Position.
Beneficial effect
The present invention has advantages below compared with prior art.
1) radar antenna test is carried out using the triaxial antennas turntable of said structure form, it is possible to decrease radar antenna is in test
During suffered electromagnetic interference, improve the accuracy of test data；
2) pitching upper bracket is employed " fiberglass reinforced plastics "（Fiberglass）, therefore, pitching upper bracket can save patch and inhale ripple
The expense of material, saves production cost；By reducing the ELECTROMAGNETIC REFLECTION brought the interference of pitching frame, radar day is improved
The testing efficiency of line, saves later data processing cost of labor.
3) using the triaxial antennas turret systems of said structure form, the feedback element that three shaftings are used is servo electricity
The angular encoder that machine is carried, system control is half-closed loop control；Above-mentioned shafting structure design also can be in shafting end established angle
Encoder is spent, three shafting full closed loop controls is realized, the positional precision of three shaftings can be improved.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is rolling component diagram in the present invention；
Fig. 2 is tilting component schematic diagram in the present invention；
Fig. 3 is orientation assembly schematic diagram in the present invention；
Fig. 4 is structure three-dimensional schematic diagram of the present invention；
Fig. 5 is structure Validity Test area front view of the present invention；
Fig. 6 is structure Validity Test area left view of the present invention；
Fig. 7 is conventional aerial test table schematic three dimensional views.
Embodiment
A kind of triaxial antennas test table system with low reflection characteristic, including wobble shaft module, pitching shafting group
Part and azimuth axle component, as shown in Fig. 4, Fig. 5, Fig. 6,
The wobble shaft module include load 1, rolling load installing plate 2, rolling band external tooth four point touching ball slewing bearing 3,
Rolling driving gear 4, rolling planetary reducer 5, rolling servomotor 6, rolling framework 7, the left end of rolling framework 7 are fixed with
Rolling band external tooth four point touching ball slewing bearing 3, the upper end of rolling framework 7 is fixed with rolling planetary reducer 5；Rolling planet subtracts
The input shaft of fast machine 5 couples with the output shaft of rolling servomotor 6, housing and the rolling planetary reducer 5 of rolling servomotor 6
Housing connected firmly with screw；The output shaft of rolling planetary reducer 5 fixes rolling driving gear 4, and rolling load installing plate 2 is fixed on
On cycle surface of the rolling with external tooth four point touching ball slewing bearing 3, tested load 1 is fixed on rolling load installing plate 2, such as
Shown in Fig. 1；
The pitch axis module includes the right guide rail 8 of pitching, pitching left rail 9, pitching upper bracket 10, pitching lower carriage 11, bowed
Face upward slider bracket 12, elevation servo motor 13, pitching left end cap 14, pitching driving gear 15, pitching right angle reductor 16, pitching
Four point touching ball slewing bearing 17, pitching right end cap 18, pitching main shaft 19, the right sliding block 20 of pitching, pitching left slider 21, pitching frame
Frame 22, the left and right sides of pitching frame 22 is provided with the right guide rail 8 of pitching and pitching left rail 9, and the right guide rail 8 of pitching and a pitching left side are led
The right sliding block 20 of pitching and pitching left slider 21 are separately installed with the working face of rail 9；Pitching slider bracket 12 is fixed on the right cunning of pitching
On block 20 and pitching left slider 21, the upper end of pitching slider bracket 12 is provided with pitching lower carriage 11, pitching lower carriage 11 it is upper
End face is provided with pitching upper bracket 10；The lower end of pitching slider bracket 12 is provided with pitching right angle reductor 16,4 points of pitching and connect
Touch ball slewing bearing 17, pitching left end cap 14 and pitching right end cap 18, the input and elevation servo of pitching right angle reductor 16
The output end connection of motor 13, the housing of pitching right angle reductor 16 and the housing mode connects for screw of elevation servo motor 13, bow
Face upward the output end and pitching driving gear 15, pitching main shaft 19 and pitching four point touching ball slewing bearing 17 of right angle reductor 16
Inner ring couples, as shown in Figure 2；
The azimuth axle component include orientation deceleration machine support 23, orientation reductor pinboard 24, azimuth planetary reductor 25,
Orientation driving gear 26, bearing servo motor 27, orientation dustproof cover for speed reducer 28, orientation four point touching ball slewing bearing 29, side
Position spindle spacer 30, azimuth axis bearing 31, azimuth axis bearing end cap 32, bearing race gasket 33, bearing inner ring pad
Angular contact ball bearing 35 under piece 34, orientation, angular contact ball bearing 36, orientation main shaft 37, azimuth base 38, orientation are dust-proof in orientation
Cover 39, the upper end of azimuth base 38 is provided with orientation four point touching ball slewing bearing 29 and orientation dust cover 39, azimuth base 38
Right-hand member orientation deceleration machine support 23 is installed, orientation reductor pinboard is installed in the inside of orientation deceleration machine support 23
24th, azimuth planetary reductor 25 and bearing servo motor 27, orientation driving gear 26 are arranged on the defeated of azimuth planetary reductor 25
Go out end, the inside of azimuth base 38, which is provided with inside azimuth axis bearing 31, azimuth axis bearing 31, is provided with angular contact ball under orientation
Angular contact ball bearing 36, bearing race gasket 33, bearing inner ring gasket 34, azimuth axis bearing on bearing 35, orientation
End cap 32 and orientation main shaft 37, the upper end of orientation main shaft 37 are combined with orientation spindle spacer 30, as shown in Figure 3；
Azimuth axle component is arranged on microwave dark room ground by azimuth base 38, and pitch axis module is under pitching frame 22
Together with end flange face and the outer ring of orientation four point touching ball slewing bearing 29 are connected firmly with screw, wobble shaft module is by rolling framework
Together with the upper surface of 7 times end flange faces and pitching upper bracket 10 is connected firmly with screw；Load 1 is arranged on rolling and loads installing plate 2
On, rolling, pitching and orientation three degree of freedom rotary motion can be achieved, and can be accurately positioned on defined Angle Position.
Material used in the pitching upper bracket 10 is fiberglass, and material used in pitching lower carriage 11 is stainless
Steel.
The right guide rail 8 of pitching and pitching left rail 9 are a diameter of 6 meters of the spliced guide rails of circular arc, and right equipped with pitching
Sliding block 20 and pitching left slider 21.
Embodiment
A kind of triaxial antennas test table system with low reflection characteristic, including：Load 1, rolling load installing plate 2,
Rolling band external tooth four point touching ball slewing bearing 3, rolling driving gear 4, rolling planetary reducer 5, rolling servomotor 6, rolling
Turn framework 7, the right guide rail 8 of pitching, pitching left rail 9, pitching upper bracket 10, pitching lower carriage 11, pitching slider bracket 12, pitching
Servomotor 13, pitching left end cap 14, pitching driving gear 15, pitching right angle reductor 16, pitching four-point contact ball turntable shaft
Hold 17, pitching right end cap 18, pitching main shaft 19, the right sliding block 20 of pitching, pitching left slider 21, pitching frame 22, orientation reductor
Support 23, orientation reductor pinboard 24, azimuth planetary reductor 25, orientation driving gear 26, bearing servo motor 27, orientation
Dustproof cover for speed reducer 28, orientation four point touching ball slewing bearing 29, orientation spindle spacer 30, azimuth axis bearing 31, bearing
Seat end cap 32, bearing race gasket 33, bearing inner ring gasket 34, angular contact ball bearing 35 under orientation, in orientation angle
Contact ball bearing 36, orientation main shaft 37, azimuth base 38 and orientation dust cover 39.
The left end of rolling framework 7 is fixed with rolling band external tooth four point touching ball slewing bearing 3, and the upper end of rolling framework 7 is consolidated
Surely there is rolling planetary reducer 5；The input shaft of rolling planetary reducer 5 couples with the output shaft of rolling servomotor 6, and rolling is watched
The housing for taking the housing and rolling planetary reducer 5 of motor 6 is connected firmly with screw；The output shaft of rolling planetary reducer 5 fixes rolling
Driving gear 4, rolling load installing plate 2 is fixed on cycle surface of the rolling with external tooth four point touching ball slewing bearing 3, is tested
Load 1 is fixed on rolling load installing plate 2, and above-mentioned 7 parts constitute wobble shaft module.
The left and right sides of pitching frame 22 is provided with the right guide rail 8 of pitching and pitching left rail 9, the right guide rail 8 of pitching and pitching
The right sliding block 20 of pitching and pitching left slider 21 are separately installed with the working face of left rail 9；Pitching slider bracket 12 is fixed on pitching
On right sliding block 20 and pitching left slider 21, the upper end of pitching slider bracket 12 is provided with pitching lower carriage 11, pitching lower carriage 11
Upper surface pitching upper bracket 10 is installed；The lower end of pitching slider bracket 12 is provided with pitching right angle reductor 16, pitching four
Point touching ball slewing bearing 17, pitching left end cap 14 and pitching right end cap 18.The input of pitching right angle reductor 16 and pitching
The output end connection of servomotor 13, the housing of the housing and elevation servo motor 13 of pitching right angle reductor 16 is connected with screw
Connect, output end and pitching driving gear 15, pitching main shaft 19 and the pitching four-point contact ball turntable shaft of pitching right angle reductor 16
The inner ring for holding 17 couples, and above-mentioned 15 parts constitute pitch axis module.
The upper end of azimuth base 38 is provided with orientation four point touching ball slewing bearing 29 and orientation dust cover 39, azimuth base
38 right-hand member is provided with orientation deceleration machine support 23, and orientation reductor pinboard is provided with the inside of orientation deceleration machine support 23
24th, azimuth planetary reductor 25 and bearing servo motor 27, orientation driving gear 26 are arranged on the defeated of azimuth planetary reductor 25
Go out end.The inside of azimuth base 38 is provided with inside azimuth axis bearing 31, azimuth axis bearing 31 and is provided with angular contact ball under orientation
Angular contact ball bearing 36, bearing race gasket 33, bearing inner ring gasket 34, azimuth axis bearing on bearing 35, orientation
End cap 32 and orientation main shaft 37, the upper end of orientation main shaft 37 are combined with orientation spindle spacer 30.
Angular encoder is fitted with the inside of three component servomotors, angle position can be provided for three shaftings
Feedback information, realizes the half-closed loop control of shafting motion.
Inner ring of the rolling with external tooth four point touching ball slewing bearing 3 is screwed on the end face of rolling framework 7, rolling
The shell flange face of planetary reducer 5 is screwed with the top of rolling framework 7.The shell afterbody of rolling planetary reducer 5 and rolling
Turn the shell mode connects for screw of servomotor 6, the input shaft of rolling planetary reducer 5 is used with the output shaft of rolling servomotor 6
Shaft coupling couples；Rolling driving gear 4 and the output shaft mode connects for screw of rolling planetary reducer 5, rolling load installing plate 2 and rolling
Turn the cycle surface with external tooth four point touching ball slewing bearing 3 to be connected firmly with screw, load 1 uses screw with rolling load installing plate 2
Connection.
Each parts turn order is that rolling servomotor 6 converts electrical energy into kinetic energy, passes through rolling in wobble shaft module
Planetary reducer 5 is transmitted to rolling driving gear 4, and rolling driving gear 4 is with rolling with external tooth four point touching ball slewing bearing 3
External toothing engages and makees underdrive, finally, and kinetic energy is delivered into rolling load installing plate 2 rotates with dynamic load 1.
The right guide rail 8 of pitching and pitching left rail 9 are screwed in the reference plane of pitching frame 22, pitching sliding block
Support 12 is screwed on the right sliding block 20 of pitching and pitching left slider 21, and pitching lower carriage 11 is screwed to be slided in pitching
The upper end of block support 12, pitching upper bracket 10 and pitching lower carriage 11 are tightened together by two flange faces with screw.Pitching
Flange on the shell of right angle reductor 16 and pitching slider bracket 12 are screwed with merging, the shell of elevation servo motor 13
With the shell afterbody mode connects for screw of pitching right angle reductor 16, input shaft and the elevation servo motor 13 of pitching right angle reductor 16
Output shaft coupled with shaft coupling, the output end of pitching right angle reductor 16 is screwed pitching driving gear 15；Pitching master
The left end screw of axle 19 couples with pitching driving gear 15, right-hand member and the pitching four point touching ball slewing bearing of pitching main shaft 19
17 inner ring mode connects for screw, the outer ring of pitching four point touching ball slewing bearing 17 matches somebody with somebody to merge with pitching slider bracket 12 uses screw
It is fixed.
Each parts turn order is that elevation servo motor 13 converts electrical energy into kinetic energy, by bowing in pitch axis module
Face upward right angle reductor 16 to transmit to pitching driving gear 15, pitching driving gear 15 is engaged with the ring gear of pitching frame 22, and
Make underdrive, finally, kinetic energy is delivered on pitching slider bracket 12, according to the right sliding block 20 of pitching and pitching left slider 21 about
The mode of beam is slided up and down along the right guide rail 8 of pitching and pitching left rail 9, so as to drive pitching lower carriage 11, pitching upper bracket 10
And wobble shaft module one acts as elevating movement.
Material used in pitching upper bracket 10 is fiberglass, and material used in pitching lower carriage 11 is stainless steel.
Azimuth base 38 is main support, and upper surface and the inner ring end face of orientation four point touching ball slewing bearing 29 coordinate,
And fixed both with screw, orientation dust cover 39 is enclosed on the outer surface of azimuth base 38, and is screwed；Azimuth base 38
The end face of right side and orientation deceleration machine support 23 coordinate, and fastened with screw, orientation reductor pinboard 24 uses flange face
Coordinate with the mounting surface of orientation deceleration machine support 23, and be screwed；It is support with orientation reductor pinboard 24, in its lower end
Azimuth planetary reductor 25 is screwed on face；Bearing servo is screwed in the shell afterbody of azimuth planetary reductor 25
The shell of motor 27, the output shaft of bearing servo motor 27 is coupled with the input shaft of azimuth planetary reductor 25 with shaft coupling；With
Orientation driving gear 26 is fixed on the output end of azimuth planetary reductor 25 by screw, with orientation four point touching ball slewing bearing 29
External toothing be meshed；The endoporus of azimuth base 38 coordinates with the cylindrical radial direction of azimuth axis bearing 31 and end face, and will with screw
Both are in axial restraint；Angular contact ball bearing 36 is " face-to-face " in angular contact ball bearing 35 and orientation under orientation installs, in bearing
Bearing race gasket 33 and bearing inner ring gasket 34, the upper end of azimuth axis bearing end cap 32 have been respectively cooperating between
The outer ring of angular contact ball bearing 35 under the tight orientation of face pressure, and azimuth axis bearing end cap 32 is fixed on azimuth axis bearing 31 by screw
On；The inner ring radial fit of the cylindrical and bearing pair of orientation main shaft 37, the upper flange surface of orientation main shaft 37 is combined with orientation main shaft pad
Piece 30；The outer ring upper surface of orientation four point touching ball slewing bearing 29 and the upper surface of orientation spindle spacer 30 respectively with pitching frame
The lower surface of frame 22 coordinates, and is fixed the outer ring of four point touching ball slewing bearing 29 with pitching frame 22 with screw, uses screw
Orientation main shaft 37 is fixed by orientation spindle spacer 30 with pitching frame 22.
Each parts turn order is that bearing servo motor 27 converts electrical energy into kinetic energy, passes through side in azimuth axle component
Position planetary reducer 25 is transmitted to orientation driving gear 26, orientation driving gear 26 and orientation four point touching ball slewing bearing 29
External toothing is engaged, and makees underdrive, and finally, kinetic energy is delivered on pitch axis module, drives pitch axis module and rolling
Rotating shaft module one acts as azimuth motion.
It is support with rolling framework 7, rolling planetary reducer 5 is fixed on the upper end hole of rolling framework 7, rolling driving gear
4 are fixed on the output end of rolling planetary reducer 5, and constituting rolling by the internal bearings combination of rolling planetary reducer 5 slows down
Mechanism shafting, the rolling driving gear 4 of the shafting is asymmetric arrangement.
Pitching slider bracket 12 is framework, and the housing flange of pitching right angle reductor 16 is fixed on pitching slider bracket 12
Left end, the outer ring of pitching four point touching ball slewing bearing 17 is fixed on the right-hand member of pitching slider bracket 12, and centre passes through pitching master
Moving gear 15 and pitching main shaft 19 are connected, and collectively constitute pitching reducer structure shafting, the pitching driving gear 15 of the shafting for pair
Claim arrangement.
Orientation deceleration machine support 23 is framework, and orientation reductor pinboard 24 is fixed on matching somebody with somebody for orientation deceleration machine support 23
Close in hole, azimuth planetary reductor 25 is fixed in the mating holes of orientation deceleration machine support 23, and orientation driving gear 26 is fixed on
The output end of azimuth planetary reductor 25, combines to form orientation reducing gear axle by the internal bearings of azimuth planetary reductor 25
System, the orientation driving gear 26 of the shafting is asymmetric arrangement.
Angular contact ball bearing 35 under azimuth axis bearing 31, orientation, angular contact ball bearing 36, bearing outer ring pad in orientation
The shafting that piece 33, bearing inner ring gasket 34, azimuth axis bearing end cap 32, orientation main shaft 37 and orientation spindle spacer 30 are constituted
Component is arranged on the endoporus of azimuth base 38, and upper end screw and the pitching frame 22 of shafting are fixed, and the shafting is used as azimuth axis
The Auxiliary support of system, can reduce the radial and axial bounce of shafting, improve the mechanical precision of azimuth axle.
Orientation spindle spacer 30 is arranged between pitching frame 22 and orientation main shaft 37, the thickness adjustable three of match grinding pad
The perpendicularity of individual shafting.
The right guide rail 8 of pitching and pitching left rail 9 are a diameter of 6 meters of the spliced guide rails of circular arc, and equipped with the right sliding block of pitching
20 and pitching left slider 21；The number of sliding block can be increased or decreased according to the size of bearing capacity.
Three three virtual axis of shafting are theoretically intersected in a point.
When in terms of 1 end of load to wobble shaft module, load 1 is can only see, remaining part material not blocked is glass
Steel.
When whole triaxial antennas turntable is placed on microwave dark room test, part of the pitching upper bracket below 10 is metal material
Material, it is necessary to absorbing material is pasted on surface, to improve the degree of accuracy of test.
Gear ring on pitching frame 22 is ring gear, and gear ring is an entirety with pitching frame 22.
In order to real simulation realistic application conditions, the framework of pitching shafting in triaxial antennas test table is changed to
It is open, and axis is turn 90 degrees around azimuth axis, and wobble shaft module is placed on tilt mount, make three axle intersection points resonable
Overlapped by upper, and tilt mount be changed to nonmetallic glass-reinforced plastic material, during actual test tilt mount and with
Absorbing material is no longer pasted in upper part, and absorbing material is pasted only for the part below tilt mount；It is " effective outside rolling shafting week
In test section ", the reflection of electromagnetic wave interference that pitch axis module is brought can be almost eliminated；Therefore, whole triaxial antennas is turned
For platform, its more conventional triaxial antennas turntable of overall reflection of electromagnetic wave characteristic is low；This organization plan can improve radar antenna
Test accuracy, lifts overall testing efficiency.
As shown in figure 1, being main support with rolling framework 7, in its left end and rolling band external tooth four-point contact ball turntable shaft
The inner ring held is screwed, and rolling planetary reducer shell flange face is positioned with rolling framework upper mounting surface, and uses screw
It is fixed.The shell flange of rolling servomotor and the housing afterbody mode connects for screw of rolling planetary reducer, rolling servomotor
Output shaft shaft coupling couple with the input shaft of rolling planetary reducer；Rolling driving gear and rolling planetary reducer are with stopping
Mouth positioning, and use mode connects for screw；Rolling loads installing plate and used with cycle surface of the rolling with external tooth four point touching ball slewing bearing
Screw is fixed, and load loads installing plate mode connects for screw with rolling, and rolling servomotor drives rolling planetary reducer, and will be dynamic
Power is transmitted to the outer ring of rolling driving gear, rolling with external tooth four point touching ball slewing bearing and rolling load installing plate successively,
It is final to realize that load is rotated.
As shown in Fig. 2 using pitching frame as main support, the right guide rail of pitching and pitching left rail are installed with screw respectively
In the reference plane at two ends, the right guide rail of pitching and pitching left rail are fitted with the right sliding block of pitching and pitching left slider；Pitching is slided
Block support is screwed on the right sliding block of pitching and pitching left slider, and pitching lower carriage is screwed in pitching slider bracket
Upper surface, pitching upper bracket and pitching lower carriage are tightened together by two flange mounting surfaces with screw.
The outer ring of pitching four point touching ball slewing bearing and pitching slider bracket right-hand member are screwed with merging；Pitching
Right angle reductor is positioned with pitching slider bracket left end with seam, and screw is fixed on the housing flange face of pitching right angle reductor；
Elevation servo motor is positioned with the seam on pitching right angle reductor housing, is fixed both with screw, pitching right-angle reduction
The input shaft of machine is coupled with the output shaft of elevation servo motor with shaft coupling；The left end of pitching driving gear and pitching right-angle reduction
The output flange face of machine is positioned with seam, and the right-hand member of pitching driving gear coordinates with the left end of pitching main shaft, pitching main shaft
The inner ring of right-hand member and pitching four point touching ball slewing bearing coordinates, and three parts are interfixed successively with screw；Elevation servo
Motor drives pitching right angle reductor, and power is transmitted to pitching driving gear, pitching frame internal tooth, pitching sliding block branch successively
Frame, pitching lower carriage and pitching upper bracket, are finally transmitted to wobble shaft module.
As shown in figure 3, using azimuth base as main support, upper surface and the inner ring of orientation four point touching ball slewing bearing stop
Mouth positioning, and fixed both with screw, orientation dust cover is enclosed on the outside of azimuth base, and is screwed；Azimuth base
The mounting surface of right side and orientation deceleration machine support coordinate, and fastened with screw, orientation deceleration machine support is screwed
The right side of azimuth base, in the inside of orientation deceleration machine support by way of seam positioning and screw are fixed, installation side successively
Position reductor pinboard, azimuth planetary reductor and bearing servo motor；The output shaft of bearing servo motor subtracts with azimuth planetary
The input shaft of fast machine is coupled with shaft coupling；Orientation driving gear is fixed on to the output end of azimuth planetary reductor with screw, with
The external toothing of orientation four point touching ball slewing bearing is meshed；
The endoporus of azimuth base is screwed azimuth axis bearing, the angular contact on the inside of azimuth axis bearing successively installation position
Angular contact ball bearing under ball bearing, bearing race gasket, bearing inner ring gasket and orientation, with screw by bearing
Seat end cap is fixed in azimuth axis bearing, and compresses the outer ring of orientation inferior horn contact ball bearing, realizes that angular contact ball bearing " is faced
Face " coordinates；
The inner ring radial fit of the cylindrical and bearing pair of orientation main shaft, orientation main shaft upper flange surface is combined with orientation spindle spacer；
The lower end of the outer ring upper surface of orientation four point touching ball slewing bearing and the upper surface of orientation spindle spacer respectively with pitching frame
Face coordinates, and is fixed the outer ring of four point touching ball slewing bearing and pitching frame with screw, is passed through orientation main shaft with screw
Orientation spindle spacer is fixed with pitching frame.
Bearing servo motor drives azimuth planetary reductor, and power is transmitted to orientation driving gear, orientation band successively
The outer ring of external tooth four point touching ball slewing bearing and pitching frame, finally realize pitch axis module orientation rotation.
The type of service of triaxial antennas test table with low reflection characteristic described in the invention is not limited to use
The encoder that motor is carried, in order to improve the positioning precision of shafting, can shafting end setting angle sensor.
Claims (3)
1. a kind of triaxial antennas test table system with low reflection characteristic, including wobble shaft module, pitch axis module
With azimuth axle component, it is characterised in that,
The wobble shaft module includes load（1）, rolling load installing plate（2）, rolling band external tooth four-point contact ball turntable shaft
Hold（3）, rolling driving gear（4）, rolling planetary reducer（5）, rolling servomotor（6）, rolling framework（7）, rolling framework
（7）Left end be fixed with rolling band external tooth four point touching ball slewing bearing（3）, rolling framework（7）Upper end be fixed with rolling row
Star reductor（5）；Rolling planetary reducer（5）Input shaft and rolling servomotor（6）Output shaft connection, rolling servo electricity
Machine（6）Housing and rolling planetary reducer（5）Housing connected firmly with screw；Rolling planetary reducer（5）Output shaft fixes rolling
Turn driving gear（4）, rolling load installing plate（2）It is fixed on rolling band external tooth four point touching ball slewing bearing（3）Outer ring end
On face, load is tested（1）It is fixed on rolling load installing plate（2）On；
The pitch axis module includes the right guide rail of pitching（8）, pitching left rail（9）, pitching upper bracket（10）, pitching lower carriage
（11）, pitching slider bracket（12）, elevation servo motor（13）, pitching left end cap（14）, pitching driving gear（15）, pitching it is straight
Angle reductor（16）, pitching four point touching ball slewing bearing（17）, pitching right end cap（18）, pitching main shaft（19）, the right cunning of pitching
Block（20）, pitching left slider（21）, pitching frame（22）, pitching frame（22）The left and right sides the right guide rail of pitching is installed（8）
With pitching left rail（9）, the right guide rail of pitching（8）With pitching left rail（9）The right sliding block of pitching is separately installed with working face（20）
With pitching left slider（21）；Pitching slider bracket（12）It is fixed on the right sliding block of pitching（20）With pitching left slider（21）On, pitching
Slider bracket（12）Upper end pitching lower carriage is installed（11）, pitching lower carriage（11）Upper surface pitching upper bracket is installed
（10）；Pitching slider bracket（12）Lower end pitching right angle reductor is installed（16）, pitching four point touching ball slewing bearing
（17）, pitching left end cap（14）With pitching right end cap（18）, pitching right angle reductor（16）Input and elevation servo motor
（13）Output end connection, pitching right angle reductor（16）Housing and elevation servo motor（13）Housing mode connects for screw,
Pitching right angle reductor（16）Output end and pitching driving gear（15）, pitching main shaft（19）With pitching four-point contact ball rotating disk
Bearing（17）Inner ring connection；
The azimuth axle component includes orientation deceleration machine support（23）, orientation reductor pinboard（24）, azimuth planetary slow down
Machine（25）, orientation driving gear（26）, bearing servo motor（27）, orientation dustproof cover for speed reducer（28）, orientation four-point contact ball
Turntable bearing（29）, orientation spindle spacer（30）, azimuth axis bearing（31）, azimuth axis bearing end cap（32）, bearing outer ring
Pad（33）, bearing inner ring gasket（34）, angular contact ball bearing under orientation（35）, angular contact ball bearing in orientation（36）、
Orientation main shaft（37）, azimuth base（38）, orientation dust cover（39）, azimuth base（38）Upper end the contact of 4 points of orientation is installed
Ball slewing bearing（29）With orientation dust cover（39）, azimuth base（38）Right-hand member deceleration machine support in orientation is installed（23）,
Orientation deceleration machine support（23）Inside orientation reductor pinboard is installed（24）, azimuth planetary reductor（25）Watched with orientation
Take motor（27）, orientation driving gear（26）Installed in azimuth planetary reductor（25）Output end, azimuth base（38）It is interior
Portion is provided with azimuth axis bearing（31）, azimuth axis bearing（31）Inside is provided with angular contact ball bearing under orientation（35）, in orientation
Angular contact ball bearing（36）, bearing race gasket（33）, bearing inner ring gasket（34）, azimuth axis bearing end cap（32）
With orientation main shaft（37）, orientation main shaft（37）Upper end is combined with orientation spindle spacer（30）；
Azimuth axle component passes through azimuth base（38）On microwave dark room ground, pitch axis module is by pitching frame
（22）Lower end flange face and orientation four point touching ball slewing bearing（29）Outer ring is connected firmly together with screw, wobble shaft module by
Rolling framework（7）Lower end flange face and pitching upper bracket（10）Upper surface connected firmly together with screw；Load（1）Installed in rolling
Turn load installing plate（2）On, rolling, pitching and orientation three degree of freedom rotary motion can be achieved, and can be in defined angle position
Put and be accurately positioned.
2. a kind of triaxial antennas test table system with low reflection characteristic according to claim 1, it is characterised in that
The pitching upper bracket（10）Used material is fiberglass, pitching lower carriage（11）Used material is stainless steel.
3. a kind of triaxial antennas test table system with low reflection characteristic according to claim 1, it is characterised in that
The right guide rail of pitching（8）With pitching left rail（9）It is a diameter of 6 meters of the spliced guide rail of circular arc, and is furnished with the right sliding block of pitching
（20）With pitching left slider（21）.
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| CN107765105A (en) * | 2017-09-28 | 2018-03-06 | 上海无线电设备研究所 | A kind of new low three-dimensional turntable of reflection |
| CN109374579A (en) * | 2018-08-13 | 2019-02-22 | 九江精密测试技术研究所 | A kind of multiple angle laser light scattering measuring table |
| CN109374984A (en) * | 2018-08-13 | 2019-02-22 | 九江精密测试技术研究所 | A kind of compact high-precision polarization turntable of adjustment height |
| CN110488100A (en) * | 2019-08-22 | 2019-11-22 | 北京中测国宇科技有限公司 | A kind of turntable and its working method of antenna OTA test macro |
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| CN111307175A (en) * | 2020-02-20 | 2020-06-19 | 哈尔滨工大航博科技有限公司 | High-dynamic three-axis simulation turntable |
| CN112730247A (en) * | 2020-12-28 | 2021-04-30 | 中国科学院合肥物质科学研究院 | Special calibration rotary table for spectrometer |
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| CN110488100A (en) * | 2019-08-22 | 2019-11-22 | 北京中测国宇科技有限公司 | A kind of turntable and its working method of antenna OTA test macro |
| CN110501576B (en) * | 2019-08-28 | 2021-07-30 | 北京无线电计量测试研究所 | Rectangular coordinate scanning frame system and splicing measurement method |
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| CN113567915A (en) * | 2021-09-28 | 2021-10-29 | 中国人民解放***箭军工程大学 | Active and passive composite radio frequency detector hanging test device |
| CN114224079A (en) * | 2021-12-03 | 2022-03-25 | 九江精密测试技术研究所 | Compact vertical shaft sleeve shaft structure |
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