CN103486981B - High-precision angle proving installation under a kind of hot vacuum environment - Google Patents
High-precision angle proving installation under a kind of hot vacuum environment Download PDFInfo
- Publication number
- CN103486981B CN103486981B CN201310430392.0A CN201310430392A CN103486981B CN 103486981 B CN103486981 B CN 103486981B CN 201310430392 A CN201310430392 A CN 201310430392A CN 103486981 B CN103486981 B CN 103486981B
- Authority
- CN
- China
- Prior art keywords
- air supporting
- transmission shaft
- supporting cover
- measured piece
- vacuum tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses the High-precision angle proving installation under a kind of hot vacuum environment, relate to the sealing test device field under thermovacuum experiment.It comprises transmission shaft, air supporting cover, nonmagnetic seat, core assembly, thermal vacuum tank and measured piece, transmission shaft is set with core assembly and plays sealing function; Transmission shaft is set with two air supporting covers, air supporting is formed to transmission shaft and supports, due to air-floating apparatus friction free advantage, avoid the impact of friction force on torque measurement of bearing, further increase measuring accuracy; What be provided with in thermal vacuum tank is heat sinkly divided into thermovacuum layer and near ambient temperature vacuum layer by thermal vacuum tank, workpiece easily produces distortion by high temperature in high temperature environments, and therefore angle measurement unit is located near ambient temperature layer by us; Meanwhile, connect measured piece output shaft and transmission shaft by driving lever, eliminate the impact of axle center skew on transmission that workpiece is at high temperature out of shape generation, the moment of torsion of measuring workpieces on transmission shaft, utilizes the ring flange that measured piece output shaft is installed to take measurement of an angle.
Description
Technical field
The present invention relates to the sealing test device under the experiment of a kind of thermovacuum, particularly relate to the High-precision angle proving installation under a kind of hot vacuum environment.
Background technology
Thermal vacuum test refer to regulation vacuum and thermal cycle conditions under check the performance of measured piece and the test of function.Thermal vacuum test not only needs the vacuum-simulating system simulating outer space vacuum environment, and need can drive equipment or load with suffered by simulation mechanism drive and load device, also to possess the ability of the information such as the torque of real-time high-precision measuring equipment, corner and rotating speed simultaneously.
Carrying out measured piece reversing in the thermal vacuum test of loading, due under hot vacuum environment, the reliability decrease of sensor, power-equipment, serviceable life shortens, and is difficult to control in test process, therefore often adopts the outer simulation system of thermovacuum and vacuum tank to test outward.The outside referring to and transmitted torque to vacuum tank by packoff tested outward by tank, and the test of torque is carried out outside vacuum tank.
To load outward as tank and measurement mechanism is fixedly tested by the motor output shaft to be measured in transmission shaft and tank, to analyze each characteristic of motor under hot vacuum environment, if also need the no-load characteristic measuring motor, in test process, need motor output shaft and transmission shaft to throw off, this difficulty under hot vacuum environment is very large.If measured piece is shaft coupling etc., two-way shaft and tank is needed to load outward and measurement mechanism is connected.
Thermal vacuum test system often adopts magnetic fluid seal driving device to be connected with measured piece in vacuum tank, rotary magnetic Fluid Sealing axle can meet guarantee hot vacuum environment seal request on the one hand, also can realize on the other hand vacuum tank outer to the power transmission in tank, if number of patent application is 200710068382.1, " magnetofluid seal driving device for vacuum equipment driving shaft " discloses and a kind ofly adopts that accuracy of detection is high, the magnetic fluid seal driving device of good reliability.Number of patent application is that " device for sealing magnetic fluid " of 201010243123.X also discloses a kind of magnetic sealing means; Because sensor measurement mechanism is positioned at outside thermovacuum simulation system, this has become indirect inspection with regard to making to the measurement of measured piece information in thermovacuum simulated environment, magnetic fluid seal driving device self friction power consumption is little, but magnet fluid sealing axle both sides need bearings to ensure not deflect, if use bearings, the friction force of bearing can produce impact greatly to torque measurement; Measured piece is fixedly linked by the loading outside magnetic fluid seal driving device and tank and measurement mechanism, because measured piece can produce distortion under hot vacuum environment, and measured piece is fixed in tank, distortion can affect the connection of measured piece and magnet fluid sealing axle, make it connect axle center to change, produce the result that deflection waits impact test.
Summary of the invention
For the problem such as frictional influence of measured piece deformation and magnetic fluid seal driving device in thermovacuum torsion test, the invention provides a kind of eliminate friction force, not by the High-precision angle proving installation under the hot vacuum environment of measured piece deformation effect.
The technical solution adopted for the present invention to solve the technical problems is: the High-precision angle proving installation under a kind of hot vacuum environment, comprises thermal vacuum tank and measured piece, is provided with heat sink in described thermal vacuum tank, and measured piece connects measured piece output shaft, it also comprises transmission shaft, air supporting cover, nonmagnetic seat, core assembly, described air supporting cover comprises the first air supporting cover and the second air supporting cover, described core assembly, first air supporting cover, second air supporting cover is sleeved on transmission shaft successively, described core assembly and the first air supporting cover, be spaced a distance between first air supporting cover and the second air supporting cover, described nonmagnetic cover for seat is contained in the first air supporting cover, second air supporting cover, on core assembly, described transmission shaft and the first air supporting cover, minim gap is had between second air supporting cover, described nonmagnetic seat is provided with two radial air inlet holes, the inlet chamber that described radial air inlet hole puts with two air supportings respectively communicates, described nonmagnetic seat left end and thermal vacuum tank are fixed, described nonmagnetic seat right-hand member installs end cap, described nonmagnetic seat is positioned at the gap portion that core assembly and the first air supporting are overlapped and the radially uniform bleeder port of gap portion that the first air supporting is overlapped and the second air supporting is overlapped, described transmission shaft is through thermal vacuum tank, the left end of described transmission shaft is connected by deflector rod device with measured piece output shaft, measured piece output shaft is through heat sink, the outer loading equipemtn of the external thermal vacuum tank of described transmission shaft right-hand member and torque sensor,
One end of described measured piece output shaft is through heat sink connection measured piece, the part that measured piece output shaft is positioned at heat sink right side is provided with ring flange, annular code-wheel is equipped with in the outside of ring flange, thermal vacuum tank is equipped with laser acquisition head, and laser acquisition head is for reading the angle of annular code-wheel;
Described deflector rod device comprises driving lever, spring, pulley, square boss, described square boss is fixed on the end face of measured piece output shaft, and described driving lever is provided with four, one end connection of rotating axle of driving lever, four driving levers distribute symmetrically at rotation axis end face, and the other end of four driving levers all connects four pulleys by spring, and four pulleys lean against the two sides of square boss;
Described core assembly comprises two blocks of annular magnetic poles, permanent magnets, and described permanent magnet is between two pieces of annular magnetic poles, and the inside surface of described annular magnetic pole is provided with pole mark of mouth groove, is provided with sealing magnetic fluid between the minim gap of described pole mark of mouth groove and transmission shaft; Described nonmagnetic seat is provided with magnetic fluid filling aperture;
Be provided with a 〇 RunddichtringO between described nonmagnetic seat and thermal vacuum tank, install between described two pieces of annular magnetic poles and nonmagnetic seat and be provided with the 2nd 〇 RunddichtringO, between described first, second air supporting cover outer ring and nonmagnetic seat, the 3rd 〇 RunddichtringO is installed.
Mentality of designing of the present invention and advantage show: transmission shaft is set with core assembly and plays sealing effectiveness, but core assembly does not play a supportive role; Transmission shaft is set with two air supporting covers, by the radial air inlet hole air feed on nonmagnetic seat, stable air film can be formed on transmission shaft, two air supporting covers are spaced a distance, form air supporting to transmission shaft to support, prevent transmission shaft from occurring bending, due to air-floating apparatus friction free advantage, avoid the impact of friction force on torque measurement of plain bearing, further increase measuring accuracy.
What be provided with in thermal vacuum tank is heat sinkly divided into thermovacuum layer and near ambient temperature vacuum layer by thermal vacuum tank, workpiece easily produces distortion by high temperature in high temperature environments, and therefore angle measurement unit is located near ambient temperature layer by us; Meanwhile, connect measured piece output shaft and transmission shaft by driving lever, eliminate the impact of axle center skew on transmission that workpiece is at high temperature out of shape generation, the moment of torsion of measuring workpieces on transmission shaft, utilizes the ring flange that measured piece output shaft is installed to take measurement of an angle.
Accompanying drawing explanation
Fig. 1 is the structural representation of the High-precision angle proving installation under hot vacuum environment.
Fig. 2 is the enlarged drawing of deflector rod device sectional view.
Embodiment
Now by reference to the accompanying drawings the present invention is further detailed.
By reference to the accompanying drawings 1, accompanying drawing 2, High-precision angle proving installation under a kind of hot vacuum environment, comprise thermal vacuum tank 2 and measured piece 6, heat sink 8 are provided with in thermal vacuum tank 2, measured piece 6 connects measured piece output shaft 5, this device also comprises transmission shaft 1, air supporting cover, nonmagnetic seat 14, core assembly, air supporting cover comprises the first air supporting cover 3 and the second air supporting cover 4, core assembly, first air supporting cover 3, second air supporting cover 4 is sleeved on transmission shaft 1 successively, core assembly and the first air supporting cover 3, be spaced a distance between first air supporting cover 3 and the second air supporting cover 4, nonmagnetic seat 14 is sleeved on the first air supporting cover 3, second air supporting cover 4, on core assembly, transmission shaft 1 and the first air supporting overlap 3, minim gap is had between second air supporting cover 4, nonmagnetic seat is provided with two radial air inlet holes 13, the inlet chamber that radial air inlet hole 13 puts with two air supportings respectively communicates, nonmagnetic seat 14 left end and thermal vacuum tank 2 are fixed, nonmagnetic seat 14 right-hand member installs end cap 17, nonmagnetic seat 14 be positioned at core assembly and the first air supporting overlap 3 gap portion and the first air supporting overlap 3 and second air supporting overlap 4 the radially uniform bleeder port 12 of gap portion, transmission shaft 1 is through thermal vacuum tank 2, the left end of transmission shaft 1 is connected by deflector rod device with measured piece output shaft 5, measured piece output shaft 5 is through heat sink 8, the outer loading equipemtn of the external thermal vacuum tank of transmission shaft 1 right-hand member and torque sensor.
Measured piece 6 is fixed by base 7 and thermal vacuum tank 2.
One end of measured piece output shaft 5 connects measured piece 6 through heat sink 8, measured piece output shaft 5 part be positioned on the right side of in the of heat sink 8 is provided with ring flange 9, annular code-wheel 22 is housed outside ring flange 9, thermal vacuum tank is equipped with laser acquisition 16, laser acquisition 16 is for reading the angle of annular code-wheel 22.
Deflector rod device comprises driving lever 19, spring 20, pulley 21, square boss 18, square boss 18 is fixed on the end face of measured piece output shaft 5, and driving lever 19 is provided with four, one end connection for transmission axle 1 of driving lever 19, four driving levers 19 distribute symmetrically at transmission shaft 1 end face, and the other end of four driving levers 19 all connects by spring 20 two sides that four pulleys, 21, four pulleys 21 lean against square boss 18.Connect measured piece output shaft 5 and transmission shaft 1 by deflector rod device, eliminating workpiece deformation is the impact that axle center skew brings on measuring.
Core assembly comprises two pieces of annular magnetic poles 10, permanent magnet 11, and permanent magnet 11 is between two pieces of annular magnetic poles 10, and the inside surface of annular magnetic pole 10 is provided with pole mark of mouth groove 15, is provided with sealing magnetic fluid between the minim gap of pole mark of mouth groove 15 and transmission shaft 1; Nonmagnetic seat 14 is provided with magnetic fluid filling aperture.
There is a 〇 RunddichtringO between nonmagnetic seat 14 and thermal vacuum tank 2, the 2nd 〇 RunddichtringO is installed between two pieces of annular magnetic poles 10 and nonmagnetic seat 14, between two air supporting cover outer rings and nonmagnetic seat 14, the 3rd 〇 RunddichtringO is installed.
Claims (1)
1. the High-precision angle proving installation under hot vacuum environment, comprises thermal vacuum tank and measured piece, is provided with heat sink in described thermal vacuum tank, and measured piece connects measured piece output shaft, it is characterized in that: it also comprises transmission shaft, air supporting cover, nonmagnetic seat, core assembly, described air supporting cover comprises the first air supporting cover and the second air supporting cover, described core assembly, first air supporting cover, second air supporting cover is sleeved on transmission shaft successively, described core assembly and the first air supporting cover, be spaced a distance between first air supporting cover and the second air supporting cover, described nonmagnetic cover for seat is contained in the first air supporting cover, second air supporting cover, on core assembly, described transmission shaft and the first air supporting cover, minim gap is had between second air supporting cover, described nonmagnetic seat is provided with two radial air inlet holes, the inlet chamber that described radial air inlet hole puts with two air supportings respectively communicates, described nonmagnetic seat left end and thermal vacuum tank are fixed, described nonmagnetic seat right-hand member installs end cap, described nonmagnetic seat is positioned at the gap portion that core assembly and the first air supporting are overlapped and the radially uniform bleeder port of gap portion that the first air supporting is overlapped and the second air supporting is overlapped, described transmission shaft is through thermal vacuum tank, the left end of described transmission shaft is connected by deflector rod device with measured piece output shaft, measured piece output shaft is through heat sink, the outer loading equipemtn of the external thermal vacuum tank of described transmission shaft right-hand member and torque sensor,
One end of described measured piece output shaft is through heat sink connection measured piece, the part that measured piece output shaft is positioned at heat sink right side is provided with ring flange, annular code-wheel is equipped with in the outside of ring flange, thermal vacuum tank is equipped with laser acquisition head, and laser acquisition head is for reading the angle of annular code-wheel;
Described deflector rod device comprises driving lever, spring, pulley, square boss, described square boss is fixed on the end face of measured piece output shaft, and described driving lever is provided with four, one end connection of rotating axle of driving lever, four driving levers distribute symmetrically at rotation axis end face, and the other end of four driving levers all connects four pulleys by spring, and four pulleys lean against the two sides of square boss;
Described core assembly comprises two blocks of annular magnetic poles, permanent magnets, and described permanent magnet is between two pieces of annular magnetic poles, and the inside surface of described annular magnetic pole is provided with pole mark of mouth groove, is provided with sealing magnetic fluid between the minim gap of described pole mark of mouth groove and transmission shaft; Described nonmagnetic seat is provided with magnetic fluid filling aperture;
Be provided with a 〇 RunddichtringO between described nonmagnetic seat and thermal vacuum tank, install between described two pieces of annular magnetic poles and nonmagnetic seat and be provided with the 2nd 〇 RunddichtringO, between described first, second air supporting cover outer ring and nonmagnetic seat, the 3rd 〇 RunddichtringO is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310430392.0A CN103486981B (en) | 2013-09-18 | 2013-09-18 | High-precision angle proving installation under a kind of hot vacuum environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310430392.0A CN103486981B (en) | 2013-09-18 | 2013-09-18 | High-precision angle proving installation under a kind of hot vacuum environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103486981A CN103486981A (en) | 2014-01-01 |
| CN103486981B true CN103486981B (en) | 2016-04-13 |
Family
ID=49827397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310430392.0A Active CN103486981B (en) | 2013-09-18 | 2013-09-18 | High-precision angle proving installation under a kind of hot vacuum environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103486981B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567746B (en) * | 2015-01-20 | 2017-07-11 | 武汉工程大学 | A kind of high-temperature flange deflection angle test system |
| CN110261145B (en) * | 2019-05-21 | 2024-06-18 | 浙江工业大学 | Mechanical arm type dynamic auxiliary heating device for thermal vacuum test |
| CN110082141B (en) * | 2019-05-21 | 2024-05-14 | 浙江工业大学 | Thermal vacuum test device with heat-insulating magnetic fluid sealing shaft |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1632452A (en) * | 2004-12-23 | 2005-06-29 | 西安华腾光电有限责任公司 | High precision photoelectric measuring method and measuring apparatus for three-dimensional dip |
| CN1786659A (en) * | 2005-12-28 | 2006-06-14 | 北京交通大学 | Method and apparatus for enhancing measuring sensitivity of rotating corner |
| CN101055037A (en) * | 2007-04-29 | 2007-10-17 | 浙江工业大学 | Magnetofluid seal driving device for vacuum equipment driving shaft |
| CN203561340U (en) * | 2013-09-18 | 2014-04-23 | 浙江工业大学 | A high-precision angle testing device in a thermal vacuum environment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55126805A (en) * | 1979-03-23 | 1980-10-01 | Fuji Electric Co Ltd | Measuring instrument for turning angle of rotary axis |
| JP2007198810A (en) * | 2006-01-24 | 2007-08-09 | Fuji Xerox Co Ltd | Position/direction measuring system |
-
2013
- 2013-09-18 CN CN201310430392.0A patent/CN103486981B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1632452A (en) * | 2004-12-23 | 2005-06-29 | 西安华腾光电有限责任公司 | High precision photoelectric measuring method and measuring apparatus for three-dimensional dip |
| CN1786659A (en) * | 2005-12-28 | 2006-06-14 | 北京交通大学 | Method and apparatus for enhancing measuring sensitivity of rotating corner |
| CN101055037A (en) * | 2007-04-29 | 2007-10-17 | 浙江工业大学 | Magnetofluid seal driving device for vacuum equipment driving shaft |
| CN203561340U (en) * | 2013-09-18 | 2014-04-23 | 浙江工业大学 | A high-precision angle testing device in a thermal vacuum environment |
Non-Patent Citations (1)
| Title |
|---|
| 结构件三自由度静刚度测试***;孙建辉等;《轻工机械》;20080430;第26卷(第2期);第72-74页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103486981A (en) | 2014-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102889973B (en) | High-precision device for measuring rolling moment based on mechanical bearing support | |
| CN100559143C (en) | Five-freedom active control magnetic suspension free rolling system | |
| CN103630301A (en) | Method for testing liquid lubrication machine seal sealing performance and devices thereof | |
| CN103486981B (en) | High-precision angle proving installation under a kind of hot vacuum environment | |
| CN102778313A (en) | Device for testing dynamic friction torque of precise micro rolling bearing | |
| CN103217289A (en) | Dynamic detection method for simulating angular contact ball bearings in meteorological satellite scanning mechanism | |
| CN103511469B (en) | A kind of seal shaft without friction belt moment of torsion and angle measurement | |
| CN203561340U (en) | A high-precision angle testing device in a thermal vacuum environment | |
| CN109612615A (en) | The test device of automobile hub bearing load friction torque | |
| CN103486999B (en) | High-precision angle under a kind of hot vacuum environment and torsion-testing apparatus | |
| CN108663149B (en) | Inner rotor chassis dynamometer directly driven by permanent magnet synchronous motor | |
| CN203561468U (en) | High-precision torque test component under thermal vacuum environment | |
| KR101656482B1 (en) | Simulator for endurance test of wind turbine | |
| CN203560307U (en) | Transmission shaft with torque-corner measurer under thermal vacuum environment | |
| CN103527644B (en) | A kind of magnet fluid sealing axle of energy Measurement accuracy hot vacuum environment lower angle | |
| CN104215441A (en) | Dynamic radial loading mechanism and stability test scheme for vertical rotor | |
| CN207215371U (en) | Magnetic suspension rotor bias analogue experiment installation | |
| CN203560308U (en) | Magnetic fluid seal shaft with frictionless angle measurement | |
| CN203463505U (en) | Magnetofluid sealing shaft capable of accurately measuring angle in thermal vacuum environment | |
| CN103499406B (en) | Perpendicularly-hung high-precision torque testing device in thermal vacuum environment | |
| CN103486140B (en) | High-precision transmission under hot vacuum environment | |
| CN203465046U (en) | Vertically-suspended high-precision torque testing apparatus in thermal vacuum environment | |
| CN103527643B (en) | With the magnet fluid sealing axle of torque measurement | |
| CN103512691B (en) | High-accuracy torque testing component in thermal vacuum environment | |
| CN203561350U (en) | High-precision angle and torque test device under thermal vacuum environment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |