CN103471835B - Close tolerance seal proving installation under hot vacuum environment - Google Patents
Close tolerance seal proving installation under hot vacuum environment Download PDFInfo
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- CN103471835B CN103471835B CN201310428982.XA CN201310428982A CN103471835B CN 103471835 B CN103471835 B CN 103471835B CN 201310428982 A CN201310428982 A CN 201310428982A CN 103471835 B CN103471835 B CN 103471835B
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- shaft
- case
- measured
- thermovacuum
- gear
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Abstract
Close tolerance seal proving installation under hot vacuum environment, comprise and regulate support, observation group, deflector rod device, connection spline, thermovacuum case, support is regulated to be arranged in thermovacuum case, regulate on support and install to be measured, to be measured connects to be measured output shaft, to be measured output shaft is by connecting spline joint magnetic fluid seal driving axle, magnetic fluid seal driving axle is drawn out to outside case through thermovacuum case, connect spline joint deflector rod device, deflector rod device is arranged in thermovacuum case, and the tank wall of thermovacuum case is provided with observation group.The present invention adopts observation camera lens observe and record the position of to be measured output shaft, employing deflector rod device controls the de-conjunction between to be measured output shaft and magnetic fluid seal driving axle, to be measured the locus in thermal vacuum tank is adjusted by regulating support, effectively avoid the impact that in thermal vacuum test, to be measured distortion produces test, be applicable to close tolerance seal transmission test under hot vacuum environment, simple to operate, precision is high.
Description
Technical field
The present invention relates to the transmission proving installation under thermal vacuum test
Background technology
Space flight equipment is applied to the singularity of outer space environment because of it, so there is high performance requirement.For satisfied design needs, at the hot vacuum environment of the ground simulation outer space, performance and the function of to be measured need be checked under vacuum and thermal cycle conditions.As in the thermal vacuum test driving or load to simulate driving and load suffered by tested mechanism to measured piece, not only need rational gearing, but also want the ability of the information such as the torque of tool real-time high-precision measuring equipment, corner and rotating speed.
Due under hot vacuum environment, the reliability decrease of sensor, power-equipment, serviceable life shortens, be difficult in test process control, therefore to be measured is placed in the vacuum tank of simulation hot vacuum environment, transmitted torque to the outside of vacuum tank by packoff, drive load and information measurement are carried out outside thermal vacuum tank.In thermal vacuum test, the normal magnetic fluid seal driving device that adopts is as sealing, is connected by be measured output shaft is drawn out to extraneous normal temperature environment with magnetic fluid seal driving axle.
To be measured needs carry out thermal vacuum test at different temperatures, after namely having tested under a certain steady temperature, then carry out heating up or lowering the temperature, and test after it is steady next time.In test process, thermovacuum case is in sealing state all the time, therefore very large to the adjustment difficulty of to be measured in case.To be measured and base all belong to non-symmetrical part, and therefore under hot vacuum environment, to be measured can produce irregular deformation, and the shaft core position of its output shaft is offset, thus affect itself and the connection with magnetic fluid seal driving axle.Moreover, when measuring to be measured no-load characteristic, need to carry out torque loading to be measured, being thrown off by charger outside to be measured output shaft and tank makes it freely discharge again, if throw off the connection of magnetic fluid seal driving axle and charger outward at tank, be convenient to operation, but the impact of device for sealing magnetic fluid rotation friction can be introduced, if directly throw off the connection of to be measured output shaft and magnetic fluid seal driving axle in tank, the impact of test result accurately still by thermal vacuum tank is not easy to operate.
Summary of the invention
In order to solve in thermal vacuum test, to be measured distortion has an impact to test, to be measured no-load characteristic measurement is difficult to the problems such as operation under hot vacuum environment, the invention provides a kind of not by be measured deformation effect, close tolerance seal transmission proving installation under the hot vacuum environment that is convenient to operation.
The technical scheme that the present invention solves the employing of its technical matters is:
Close tolerance seal proving installation under hot vacuum environment, comprises and regulates support, observation group, deflector rod device, connection spline, thermovacuum case.Described adjustment support is arranged in thermovacuum case, described adjustment support installs to be measured, described to be measured connects to be measured output shaft, and described to be measured output shaft is by connecting spline joint magnetic fluid seal driving axle, and described magnetic fluid seal driving axle is drawn out to outside case through thermovacuum case; Described connection spline joint deflector rod device, described deflector rod device is arranged in thermovacuum case; The tank wall of described thermovacuum case is provided with observation group.
Described adjustment support comprises Workpiece fixing plate, device fixed head, main drive shaft, driven shaft, driving gear, follower gear, clutch coupling.Supported by driven shaft between described Workpiece fixing plate and device fixed head, described driven shaft has three at least, installs two floating junction, be connected between described driven shaft with device fixed head by rolling bearing between described driven shaft and Workpiece fixing plate; Described follower gear is sleeved on driven shaft, and multiple follower gear in the axial direction position staggers.
Described main drive shaft is arranged on the center of device fixed head by bearing, and described driving gear can be sleeved on main drive shaft in axial sliding, and described main drive shaft rotates and driving gear can be driven to rotate, and described driving gear can engage with follower gear.Gear adjustable plate one end to be sleeved on main drive shaft and not to contact with between main drive shaft, described gear adjustable plate supports driving gear in the axial direction, the described gear adjustable plate other end is sleeved on lifting stud by threaded hole, and described lifting stud is arranged on device fixed head by bearing.
Described clutch pack is containing driving disc spacing pressing and clutch plate, and described clutch plate is fixed on the below of Workpiece fixing plate, and described driving disc spacing pressing is fixed on driving gear, and when after the driving disc spacing pressing and clutch plate engagement of clutch coupling, rotary main shaft can drive Workpiece fixing plate to rotate.
Described rotary main shaft and lifting stud lower end are connected with two flexible axles be drawn out to outside thermovacuum case respectively by device fixed head.
Described device fixed head lower end is contained on mobile screw and shifting axle by Mobile base and slide block set, described mobile screw installation parallel with shifting axle and fixing with thermovacuum case, and described mobile screw one end is drawn out to outside case through thermovacuum case by packoff.
Described to be measured output shaft end and magnetic fluid seal driving axle top are set with splined shaft, and spline housing is sleeved on splined shaft.
Described deflector rod device comprises plectrum, the tooth bar of two end band sliding axles, gear, rotating shaft.The tooth bar of described two end band sliding axles is fixed on driving lever installing plate by sliding axle mount pad, described gear centre is fixed with rotating shaft and is engaged with tooth bar, described rotating shaft is drawn out to outside thermovacuum case by sealing shroud, described plectrum has two and is vertically fixed on tooth bar, described plectrum is each passed through the two ends that to be measured output shaft and magnetic fluid seal driving axle sleeve are contained in spline housing, and described plectrum moves with tooth bar and can promote spline housing and not affect splined shaft.
It is with to be measured output shaft lateral location relative with side that described observation group is arranged on thermovacuum case top; Described observation group comprises observation camera lens and view window; Described observation camera lens comprises eyepiece, liquid crystal graticule, object lens, and described liquid crystal graticule is arranged between eyepiece and object lens, and described liquid crystal graticule can show the parallel scale mark and center line that two stripe pitch can adjust under additional power source controls.
Described thermovacuum case also comprises case lid and casing, and described casing is sealed by case lid, and described magnetic fluid seal driving axle is through case lid.
Method of testing of the present invention is:
1, under normal temperature non-vacuum environment, by be measured clamping on the Workpiece fixing plate regulating support, to be measured output shaft and magnetic fluid seal driving axle are passed through spline joint.
2, the observation camera lens of thermovacuum box top and side is adjusted, make it possible to the output shaft observing to be measured clearly, regulate two scale marks on observation camera lens liquid crystal graticule more respectively, make it just overlap with output shaft sideline, the center line on now liquid crystal graticule is as the benchmark of subsequent adjustment.
3, the rotating shaft of rotating lever device, the gear driven tooth bar in rotating shaft moves, and by the plectrum on tooth bar, spline housing is allocated to transmission shaft side, throws off to be measured the connection between output shaft and transmission shaft and makes it be in free state.
4, seal thermovacuum case, test again when it reaches and tests temperature required and vacuum environment.
5, after temperature plateau, the deforming displacement amount of to be measured output shaft is observed by observation camera lens.
6, rotary flexible shaft can drive the rotation of lifting stud and rotary main shaft in thermovacuum case, select to need meshed gears or clutch coupling by lifting stud, the lifting of rotary main shaft adjustable work-piece fixed head or rotation again, to adjust the locus of on Workpiece fixing plate to be measured.
7, the invariant position of reference center's line in liquid crystal graticule is kept, equidistant expansion or the distance reduced in graticule between two scale marks, coordinate and regulate support move or rotate to be measured, until two parallel scale marks overlap with the sideline of output shaft again, the dead in line of to be measured output shaft and magnetic fluid seal driving axle now can be thought.
8, the rotating shaft of rotating lever device, is allocated to be measured output shaft side by spline housing, reconnect to be measured output shaft and magnet fluid sealing axle.Carry out the performance tests such as to be measured driving or loading.
9, repetitive operation step 2 is to 8, can carry out to be measured performance test under different temperatures.
Mentality of designing of the present invention and advantage show:
By the impact of hot vacuum environment, to be measured can produce irregular deformation, thus has influence on the connection of to be measured output shaft and the outer proving installation of tank.
The present invention adopts observation camera lens observe and record the position of to be measured output shaft, and employing deflector rod device controls the de-conjunction between to be measured output shaft and magnetic fluid seal driving axle, adjusts to be measured the locus in thermal vacuum tank by regulating support.Therefore, the initial position of shot record to be measured output shaft is observed under normal temperature environment, then the connection of itself and magnetic fluid seal driving axle is thrown off by deflector rod device, allow to be measured Free Transform under hot vacuum environment, after temperature plateau, coordinate adjustment support by observation camera lens, to be measured output shaft is overlapped again with the axis of magnetic fluid seal driving axle, connect to be measured output shaft and magnetic fluid seal driving axle by deflector rod device again, carry out follow-up test.Also can be thrown off the connection of to be measured output shaft and magnetic fluid seal driving axle after to be measured loading is completed by deflector rod device, conveniently carry out the test of no-load characteristic.
Deflector rod device have employed the design concept of rack-and-pinion, rotate the rotating shaft be drawn out to outside thermal vacuum tank to move by the gear driven tooth bar in rotating shaft, plectrum is vertically mounted on tooth bar, and therefore, the rotary steerable of thermal vacuum tank outer shaft heats the movement of plectrum in vacuum tank.To be measured output shaft and magnetic fluid seal driving axle are set with splined shaft, spline housing is sleeved on splined shaft, plectrum is positioned at the both sides of spline housing, plectrum moves and drives spline housing to move toward magnetic fluid seal driving axle side, the connection between spline housing and to be measured output shaft upper spline axle can be thrown off, thus to be measured output shaft is freely discharged; In like manner, rotating shaft drives plectrum to move, and drives spline housing to move toward to be measured output shaft side, spline housing can be engaged again with the splined shaft on to be measured output shaft.Deflector rod device can realize to be measured output shaft and throws off between magnetic fluid seal driving axle and be connected.
Support is regulated to realize five degree of freedom.To be measured is fixed on Workpiece fixing plate, and setting to be measured output axial direction is x direction, and the direction of vertical workpiece fixed head is y direction.At least three driven shafts are passed through as support below Workpiece fixing plate, between driven shaft and Workpiece fixing plate, two floating junction is installed and driven shaft upper end is spirally connected with two floating junction, therefore rotary-driven shaft can realize the lifting of two floating junction, the driven shaft of more than three cooperatively interacts, the y that just can realize Workpiece fixing plate to mobile and x, z to rotation.
Two floating junction has multiple degree of freedom, therefore can not be limited by other driven shafts when adjusting single driven shaft.Follower gear is sleeved on driven shaft and stagger in position in the axial direction, rotary flexible shaft can drive the rotation of lifting stud and rotary main shaft in thermovacuum case, control moving axially of driving gear by lifting stud, select the follower gear needing engagement, rotary main shaft just can drive driven shaft to rotate.
The driving disc spacing pressing of clutch coupling and clutch plate are separately fixed at the top of driving gear and the below of Workpiece fixing plate, control driving gear and rise and make the driving disc spacing pressing of clutch coupling and clutch plate engagement, then rotate rotary main shaft and just can realize the y of Workpiece fixing plate to rotation.Device fixed head lower end is contained in along z on the mobile screw installed and shifting axle by Mobile base and slide block set, and therefore screw rod in rotary moving can realize the z of adjustment support to movement.To be measured the movement around x-axis direction and rotation do not affect the connection of splined shaft and spline housing, so can be not considered.To be measured the deflection under hot vacuum environment is not very large, regulates support can meet the adjustment of its five degree of freedom.
Output shaft in thermovacuum case cannot carry out the demarcation of center line, therefore must adopt aid.Because liquid crystal graticule can show the adjustable parallel scale mark of two stripe pitch and center line under additional power source controls, so two scale marks on adjustment observation camera lens liquid crystal graticule, make it just overlap with output shaft sideline, just can obtain the position of output shaft center line.Observe cooperatively interacting of camera lens, the change in Observable to be measured output shaft four degree of freedom directions by thermovacuum case top and two, side, meet and regulate requirement.
Accompanying drawing explanation
Fig. 1 is the close tolerance seal proving installation schematic diagram under hot vacuum environment
Fig. 2 is Fig. 1 is left view
Fig. 3 is the vertical view of Fig. 1
Embodiment
By reference to the accompanying drawings 1 to 3, the close tolerance seal proving installation under hot vacuum environment, comprises and regulates support, observation group 3, deflector rod device, connection spline.Described adjustment support is arranged in thermovacuum case, described connection spline joint to be measured output shaft 9 and magnetic fluid seal driving axle 6, described deflector rod device is fixed in thermovacuum case and plectrum acts on and connects on spline, and it is relative with to be measured output shaft 9 lateral location with side that described observation group 3 is arranged on thermovacuum case top.
Described adjustment support comprises Workpiece fixing plate 23, device fixed head 15, main drive shaft 16, driven shaft 22, driving gear 21, follower gear 14, clutch coupling.Supported by four driven shafts 22 between described Workpiece fixing plate 23 and device fixed head 15, install two floating junction 12 between described driven shaft 22 and Workpiece fixing plate 23, described driven shaft 22 is connected by rolling bearing with between device fixed head 15; Described follower gear 14 is sleeved on driven shaft 22, and multiple follower gear 14 staggers position in the axial direction.
Described main drive shaft 16 is arranged on the center of device fixed head 15 by bearing, described driving gear 21 can be sleeved on main drive shaft 16 in axial sliding, described main drive shaft 16 rotates and driving gear 21 can be driven to rotate, and described driving gear 21 can engage with follower gear 14.Described gear adjustable plate 13 one end to be sleeved on main drive shaft 16 and not to contact with between main drive shaft 16, described gear adjustable plate 13 supports driving gear 21 in the axial direction, described gear adjustable plate 13 other end is sleeved on lifting stud 29 by threaded hole, and described lifting stud 29 is arranged on device fixed head 15 by bearing.
Described clutch pack is containing driving disc spacing pressing 7 and clutch plate 24, described clutch plate 24 is fixed on the below of Workpiece fixing plate 23, described driving disc spacing pressing 7 is fixed on driving gear 21, and when after the driving disc spacing pressing 7 and clutch plate 24 engagement of clutch coupling, rotary main shaft 16 can drive Workpiece fixing plate 23 to rotate.
Described rotary main shaft 16 and lifting stud 29 lower end are connected with two flexible axles 18,32 be drawn out to outside thermovacuum case respectively by device fixed head 15.
Described device fixed head 15 lower end is sleeved on mobile screw 20 and shifting axle 17 by Mobile base 19, described mobile screw 20 installation parallel with shifting axle 17 and fixing with thermovacuum box body 1, described mobile screw 20 one end is drawn out to outside case through thermovacuum box body 1 by packoff 25.
Described to be measured output shaft 9 end and magnetic fluid seal driving axle 6 top are set with splined shaft 33, and described spline housing 11 is sleeved on splined shaft 33.
Described deflector rod device comprises the tooth bar 30 of plectrum 10, two end band sliding axle, gear 28, rotating shaft 26.The tooth bar 30 of described two end band sliding axles is fixed on driving lever installing plate 27 by sliding axle mount pad 31, described gear 28 center is fixed with rotating shaft 26 and engages with tooth bar 30, described rotating shaft 26 is drawn out to outside thermovacuum case by sealing shroud 25, described plectrum 10 has two panels and is vertically fixed on tooth bar 30, described plectrum 10 is each passed through the two ends that to be measured output shaft 9 and magnetic fluid seal driving axle 6 are sleeved on spline housing 11, and described plectrum 10 moves with tooth bar 30 and can promote spline housing 11 and not affect splined shaft 33.
Described observation group comprises observation camera lens 3 and view window 2.Described observation camera lens 3 comprises eyepiece 34, liquid crystal graticule 35, object lens 36, described liquid crystal graticule 35 is arranged between eyepiece 34 and object lens 36, and described liquid crystal graticule 35 can show the parallel scale mark and center line that two stripe pitch can adjust under additional power source controls.
Described thermovacuum case also comprises case lid 4 and casing 1, and described casing 1 is sealed by case lid 4, and described magnetic fluid seal driving axle 6 is through case lid 4.
Claims (2)
1. the close tolerance seal proving installation under hot vacuum environment, is characterized in that: comprise and regulate support, observation group, deflector rod device, connection spline, thermovacuum case; Described adjustment support is arranged in thermovacuum case, and described adjustment support installs to be measured, and described to be measured connects to be measured output shaft, and described to be measured output shaft is by connecting spline joint transmission shaft, and described transmission shaft is drawn out to outside case through thermovacuum case; Described connection spline joint deflector rod device, described deflector rod device is arranged in thermovacuum case; The tank wall of described thermovacuum case is provided with observation group;
Described adjustment support comprises Workpiece fixing plate, device fixed head, main drive shaft, driven shaft, driving gear, follower gear, clutch coupling; Supported by driven shaft between described Workpiece fixing plate and device fixed head, described driven shaft has three at least, installs two floating junction, be connected between described driven shaft with device fixed head by rolling bearing between described driven shaft and Workpiece fixing plate; Described follower gear is sleeved on driven shaft, and multiple follower gear in the axial direction position staggers;
Described main drive shaft is arranged on the center of device fixed head by bearing, and described driving gear can be sleeved on main drive shaft in axial sliding, and described main drive shaft rotates and driving gear can be driven to rotate, and described driving gear can engage with follower gear; Gear adjustable plate one end to be sleeved on main drive shaft and not to contact with between main drive shaft, described gear adjustable plate supports driving gear in the axial direction, the described gear adjustable plate other end is sleeved on lifting stud by threaded hole, and described lifting stud is arranged on device fixed head by bearing;
Described clutch pack is containing driving disc spacing pressing and clutch plate, and described clutch plate is fixed on the below of Workpiece fixing plate, and described driving disc spacing pressing is fixed on driving gear, and when after the driving disc spacing pressing and clutch plate engagement of clutch coupling, rotary main shaft can drive Workpiece fixing plate to rotate;
Described rotary main shaft and lifting stud lower end are connected with two flexible axles be drawn out to outside thermovacuum case respectively by device fixed head;
Described device fixed head lower end is contained on mobile screw and shifting axle by Mobile base and slide block set, described mobile screw installation parallel with shifting axle and fixing with thermovacuum case, and described mobile screw one end is drawn out to outside case by packoff through thermovacuum case;
Described to be measured output shaft end and magnetic fluid seal driving axle top are set with splined shaft, and spline housing is sleeved on splined shaft;
Described deflector rod device comprises plectrum, the tooth bar of two end band sliding axles, gear, rotating shaft; The tooth bar of described two end band sliding axles is fixed on driving lever installing plate by sliding axle mount pad, described gear centre is fixed with rotating shaft and is engaged with tooth bar, described rotating shaft is drawn out to outside thermovacuum case by sealing shroud, described plectrum has two and is vertically fixed on tooth bar, described plectrum is each passed through the two ends that to be measured output shaft and magnetic fluid seal driving axle sleeve are contained in spline housing, and described plectrum moves with tooth bar and can promote spline housing and not affect splined shaft;
It is with to be measured output shaft lateral location relative with side that described observation group is arranged on thermovacuum case top; Described observation group comprises observation camera lens and view window; Described observation camera lens comprises eyepiece, liquid crystal graticule, object lens, and described liquid crystal graticule is arranged between eyepiece and object lens, and described liquid crystal graticule can show the parallel scale mark and center line that two stripe pitch can adjust under additional power source controls.
2. the close tolerance seal proving installation under a kind of hot vacuum environment as claimed in claim 1, is characterized in that: described thermovacuum case also comprises case lid and casing, and described casing is sealed by case lid, and described magnetic fluid seal driving axle is through case lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310428982.XA CN103471835B (en) | 2013-09-18 | 2013-09-18 | Close tolerance seal proving installation under hot vacuum environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310428982.XA CN103471835B (en) | 2013-09-18 | 2013-09-18 | Close tolerance seal proving installation under hot vacuum environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103471835A CN103471835A (en) | 2013-12-25 |
| CN103471835B true CN103471835B (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310428982.XA Expired - Fee Related CN103471835B (en) | 2013-09-18 | 2013-09-18 | Close tolerance seal proving installation under hot vacuum environment |
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| Country | Link |
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| CN (1) | CN103471835B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5955880A (en) * | 1996-12-05 | 1999-09-21 | Beam; Palmer H. | Sealless pump rotor position and bearing monitor |
| CN201034813Y (en) * | 2007-04-27 | 2008-03-12 | 洛阳轴研科技股份有限公司 | High speed drive axle tester |
| CN201819671U (en) * | 2010-10-20 | 2011-05-04 | 北京卫星环境工程研究所 | Antenna deformation photogrammetry system under vacuum low temperature environment |
| CN202676429U (en) * | 2012-04-11 | 2013-01-16 | 上海市特种设备监督检验技术研究院 | Lifting height limiter simulation test bench |
| CN203551255U (en) * | 2013-09-18 | 2014-04-16 | 浙江工商大学 | High-precision seal test device in thermal vacuum environment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03287042A (en) * | 1990-04-02 | 1991-12-17 | Ebara Res Co Ltd | Testing device for shaft seal and bearing |
-
2013
- 2013-09-18 CN CN201310428982.XA patent/CN103471835B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5955880A (en) * | 1996-12-05 | 1999-09-21 | Beam; Palmer H. | Sealless pump rotor position and bearing monitor |
| CN201034813Y (en) * | 2007-04-27 | 2008-03-12 | 洛阳轴研科技股份有限公司 | High speed drive axle tester |
| CN201819671U (en) * | 2010-10-20 | 2011-05-04 | 北京卫星环境工程研究所 | Antenna deformation photogrammetry system under vacuum low temperature environment |
| CN202676429U (en) * | 2012-04-11 | 2013-01-16 | 上海市特种设备监督检验技术研究院 | Lifting height limiter simulation test bench |
| CN203551255U (en) * | 2013-09-18 | 2014-04-16 | 浙江工商大学 | High-precision seal test device in thermal vacuum environment |
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| Publication number | Publication date |
|---|---|
| CN103471835A (en) | 2013-12-25 |
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Granted publication date: 20160420 Termination date: 20160918 |