CN203465046U - Vertically-suspended high-precision torque testing apparatus in thermal vacuum environment - Google Patents
Vertically-suspended high-precision torque testing apparatus in thermal vacuum environment Download PDFInfo
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- CN203465046U CN203465046U CN201320581647.9U CN201320581647U CN203465046U CN 203465046 U CN203465046 U CN 203465046U CN 201320581647 U CN201320581647 U CN 201320581647U CN 203465046 U CN203465046 U CN 203465046U
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- air supporting
- supporting cover
- transmission shaft
- air
- measured piece
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Abstract
The utility model relates to a vertically-suspended high-precision torque testing apparatus in a thermal vacuum environment. The high-precision torque testing apparatus consists of a heat transmission shaft, air floatation sleeves, a non-magnetic seat, a magnetic core assembly, a vacuum tank, a tested element and a measured element output shaft. The tested element is connected with the measured element output shaft; and the tested element and the measured element output shaft are arranged in the thermal vacuum tank. The magnetic core assembly and the two air floatation sleeves are successively sleeved at the transmission shaft; a flange plate is installed at the transmission shaft; and an annular coding disk is sleeved on the outer plate of the flange plate. The provided apparatus the following advantages: the two air floatation sleeves are sleeved on the transmission shaft and support the transmission shaft; and because of the friction-free advantage of the air floatation devices, the influence on the torque measurement by the friction force of the common bearing can be avoided, thereby further improving the testing precision. Exhaust vents are uniformly distributed at the end surfaces, approaching the flange plate, of the two air floatation sleeves along the axial direction and an air film is formed between the two air floatation sleeves and the flange plate, so that the direction contact of the flange plate with the air floatation sleeves can be prevented and the influence on the measuring result by the relative friction of the flange plate and the air floatation sleeves during rotation can be eliminated.
Description
Technical field
The utility model relates to the sealing test device under a kind of thermovacuum experiment, relates in particular to the High Precision Torque Measuring device under a kind of hot vacuum environment of vertically hanging.
Background technology
Thermal vacuum test refers to the test of checking performance and the function of measured piece under the vacuum of regulation and thermal cycle conditions.Thermal vacuum test not only needs there is the vacuum-simulating system that can simulate outer space vacuum environment, and need to have and can equipment be driven or be loaded with the suffered driving of simulation mechanism and load device, also to possess the ability of the information such as torque, corner and rotating speed of real-time high-precision measuring equipment simultaneously.
In measured piece being reversed to the thermal vacuum test loading, under hot vacuum environment, the reliability decrease of sensor, power-equipment, shorten serviceable life, is difficult to control in test process, and therefore often adopting the outer simulation system of thermovacuum is that vacuum tank is tested outward.The outer test of tank refers to the outside that transmits torque to vacuum tank by packoff, and the test of torque is carried out outward at vacuum tank.
Loading as outer in tank and measurement mechanism are 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 to measure the no-load characteristic of 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., need the outer loading of two-way shaft and tank and measurement mechanism to be 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 assurance hot vacuum environment seal request on the one hand, also can realize on the other hand vacuum tank outer to the transmission of power 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 be 201010243123.X's " device for sealing magnetic fluid " a kind of magnetic sealing means is also disclosed; Because sensor measurement mechanism is positioned at outside thermovacuum simulation system, this has become indirect measurement 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 guarantee 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 being connected of measured piece and magnet fluid sealing axle, make it connect axle center and change, produce the result of the impact tests such as deflection.
Utility model content
For the problems such as frictional influence of measured piece deformation in thermovacuum torsion test and magnetic fluid seal driving device, the utility model provides a kind of High Precision Torque Measuring device of eliminating under the hot vacuum environment of vertically hanging friction force, that be not subject to measured piece deformation effect.
The utility model solves the technical scheme that its technical matters adopts: the High Precision Torque Measuring device under a kind of hot vacuum environment of vertically hanging, comprise thermovacuum tank, measured piece and measured piece output shaft, described measured piece connects measured piece output shaft, and measured piece and measured piece output shaft are all positioned at thermovacuum tank, it also comprises hot transmission axle, 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, the first air supporting cover, the second air supporting cover is sleeved on transmission shaft successively, described core assembly and the first air supporting cover, the certain distance in interval between the first air supporting cover and the second air supporting cover, described nonmagnetic cover for seat is contained in the first air supporting cover, the second air supporting cover, on core assembly, described transmission shaft and the first air supporting cover, between the second air supporting cover, there is minim gap, described nonmagnetic seat is provided with two radial air inlet holes, described radial air inlet hole is logical with the inlet chamber that two air supportings put respectively, described nonmagnetic seat lower end and thermovacuum tank are fixed, end cap is installed in described nonmagnetic seat upper end, described nonmagnetic seat is positioned at the gap portion of core assembly and the first air supporting cover and the radially uniform bleeder port of gap portion of the first air supporting cover and the second air supporting cover, in the radially uniform bleeder port of gap portion that described the first air supporting cover and the second air supporting are overlapped, be provided with a laser probe, the gap portion that described transmission shaft is positioned at the first air supporting cover and the second air supporting cover is equipped with ring flange, described ring flange and transmission shaft are affixed, between described the first air supporting cover and ring flange, the second air supporting cover and ring flange, there is minim gap, in described ring flange outer disk, be set with annular code-wheel, two end faces of described the first air supporting cover and the close ring flange of the second air supporting cover are along being axially uniformly distributed vent port,
The top of described thermovacuum tank is provided with through hole; Described transmission shaft is through the through hole of thermovacuum tank top, and the lower end of described transmission shaft is connected by shaft coupling with measured piece input shaft;
Described core assembly comprises two annular magnetic poles, permanent magnet, and described permanent magnet is between two annular magnetic poles, and the inside surface of described annular magnetic pole is provided with utmost point mark of mouth groove, between the minim gap of described utmost point mark of mouth groove and transmission shaft, is provided with sealing magnetic fluid; Described nonmagnetic seat is provided with the filling hole of magnetic fluid;
Between described nonmagnetic seat and thermovacuum tank, be provided with a 〇 RunddichtringO, between described two annular magnetic poles and nonmagnetic seat, be provided with and establish 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 utility model and advantage show: on transmission shaft, be set with two air supporting covers, by the radial air inlet hole air feed on nonmagnetic seat, can on transmission shaft, form stable air film, due to air-floating apparatus friction free advantage, avoid the impact of the friction force of plain bearing on torque measurement, further improved measuring accuracy.
Two end faces of the first air supporting cover and the close ring flange of the second air supporting cover are along being axially uniformly distributed vent port, between two air supporting covers and ring flange, form air film, prevent that the gentle empty boasting of ring flange from directly contacting, both friction impacts on measurement result relatively while having eliminated rotation.The weight that the effect of ring flange is to prevent the play up and down of transmission shaft and supports measured piece 2.
Under thermovacuum layer, workpiece is subject to high temperature easily to produce distortion, therefore we are contained in survey instrument outside thermovacuum tank, prevent the impact of high temperature on measurement mechanism, utilize device for sealing magnetic fluid and O-ring seal that whole thermovacuum tank is sealed, by the transmission shaft being connected by shaft coupling with measured piece output shaft, measure the moment of torsion of measured piece, in the time of vertical survey, we can eliminate the impact of distortion on measurement result.
Accompanying drawing explanation
Fig. 1 is the structural representation of the High Precision Torque Measuring device under the hot vacuum environment of vertically hanging.
Embodiment
Now by reference to the accompanying drawings the utility model is further detailed.
By reference to the accompanying drawings 1, accompanying drawing 2, High Precision Torque Measuring device under a kind of hot vacuum environment of vertically hanging, comprise thermovacuum tank 1, measured piece 2 and measured piece output shaft 3, the affixed measured piece output shaft 3 of measured piece 2, measured piece 2 and measured piece output shaft 3 are all in thermovacuum tank, this device also comprises transmission shaft 5, air supporting cover, nonmagnetic seat 8, core assembly, air supporting cover comprises first air supporting cover the 6 and second air supporting cover 7, core assembly, the first air supporting cover 6, the second air supporting cover 7 is sleeved on transmission shaft 5 successively, core assembly and the first air supporting cover 6, the certain distance in interval between first air supporting cover the 6 and second air supporting cover 7, nonmagnetic cover for seat 8 is contained in the first air supporting cover 6, the second air supporting cover 7, on core assembly, transmission shaft 5 and the first air supporting cover 6, between the second air supporting cover 7, there is minim gap, nonmagnetic seat 8 is provided with two radial air inlet holes 9, radial air inlet hole 9 is logical with the inlet chamber that two air supportings put respectively, nonmagnetic seat 8 lower ends and thermovacuum tank 1 are fixing, end cap 11 is installed in nonmagnetic seat 8 upper ends, nonmagnetic seat 8 is positioned at the gap portion of core assembly and the first air supporting cover 6 and the radially uniform bleeder port 10 of gap portion of the first air supporting cover the 6 and second air supporting cover 7, first air supporting cover the 6 and second air supporting is overlapped in the radially uniform bleeder port on 7 gap portions and is provided with a laser probe 16, the gap portion that transmission shaft 5 is positioned at first air supporting cover the 6 and second air supporting cover 7 is equipped with ring flange 15, ring flange 15 is fixed on transmission shaft 5, between the first air supporting cover 6 and ring flange 15, the second air supporting cover 7 and ring flange 15, there is minim gap, in ring flange 15 outer disks, be set with annular code-wheel, first air supporting cover 6 and second air supporting cover 7 two end faces near ring flange are along being axially uniformly distributed vent port, and laser probe 16 is for reading the scale of annular code-wheel.
The top of thermovacuum tank 1 is provided with through hole; Transmission shaft 5 is through the through hole at thermovacuum tank 1 top, and the lower end of transmission shaft 5 is connected by shaft coupling 17 with measured piece input shaft 4.When installing, transmission shaft 5 need assurances hang barycenter with measured piece 2.
Core assembly comprises two annular magnetic poles 12, permanent magnet 14, and permanent magnet is between two annular magnetic poles 12, and the inside surface of annular magnetic pole 12 is provided with utmost point mark of mouth groove 13, between the minim gap of utmost point mark of mouth groove 13 and transmission shaft 5, is provided with sealing magnetic fluid; Nonmagnetic seat 8 is provided with the filling hole of magnetic fluid.
Claims (1)
1. the High Precision Torque Measuring device under the hot vacuum environment of vertically hanging, comprises measured piece and measured piece output shaft, and described measured piece connects measured piece output shaft, and measured piece and measured piece output shaft are all positioned at thermovacuum tank, it is characterized in that: it also comprises hot transmission axle, air supporting cover, nonmagnetic seat, core assembly, vacuum tank, described air supporting cover comprises the first air supporting cover and the second air supporting cover, described core assembly, the first air supporting cover, the second air supporting cover is sleeved on transmission shaft successively, described core assembly and the first air supporting cover, the certain distance in interval between the first air supporting cover and the second air supporting cover, described nonmagnetic cover for seat is contained in the first air supporting cover, the second air supporting cover, on core assembly, described transmission shaft and the first air supporting cover, between the second air supporting cover, there is minim gap, described nonmagnetic seat is provided with two radial air inlet holes, described radial air inlet hole is logical with the inlet chamber that two air supportings put respectively, described nonmagnetic seat lower end and thermovacuum tank are fixed, end cap is installed in described nonmagnetic seat upper end, described nonmagnetic seat is positioned at the gap portion of core assembly and the first air supporting cover and the radially uniform bleeder port of gap portion of the first air supporting cover and the second air supporting cover, in the radially uniform bleeder port of gap portion that described the first air supporting cover and the second air supporting are overlapped, be provided with a laser probe, the gap portion that described transmission shaft is positioned at the first air supporting cover and the second air supporting cover is equipped with ring flange, described ring flange and transmission shaft are affixed, between described the first air supporting cover and ring flange, the second air supporting cover and ring flange, there is minim gap, in described ring flange outer disk, be set with annular code-wheel, two end faces of described the first air supporting cover and the close ring flange of the second air supporting cover are along being axially uniformly distributed vent port,
The top of described thermovacuum tank is provided with through hole; Described transmission shaft is through the through hole of thermovacuum tank top, and the lower end of described transmission shaft is connected by shaft coupling with measured piece input shaft;
Described core assembly comprises two annular magnetic poles, permanent magnet, and described permanent magnet is between two annular magnetic poles, and the inside surface of described annular magnetic pole is provided with utmost point mark of mouth groove, between the minim gap of described utmost point mark of mouth groove and transmission shaft, is provided with sealing magnetic fluid; Described nonmagnetic seat is provided with the filling hole of magnetic fluid;
Between described nonmagnetic seat and thermovacuum tank, be provided with a 〇 RunddichtringO, between described two annular magnetic poles and nonmagnetic seat, be provided with and establish 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 |
|---|---|---|---|
| CN201320581647.9U CN203465046U (en) | 2013-09-18 | 2013-09-18 | Vertically-suspended high-precision torque testing apparatus in thermal vacuum environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320581647.9U CN203465046U (en) | 2013-09-18 | 2013-09-18 | Vertically-suspended high-precision torque testing apparatus in thermal vacuum environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203465046U true CN203465046U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320581647.9U Expired - Fee Related CN203465046U (en) | 2013-09-18 | 2013-09-18 | Vertically-suspended high-precision torque testing apparatus in thermal vacuum environment |
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| CN (1) | CN203465046U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499406A (en) * | 2013-09-18 | 2014-01-08 | 浙江工商大学 | Perpendicularly-hung high-precision torque testing device in thermal vacuum environment |
-
2013
- 2013-09-18 CN CN201320581647.9U patent/CN203465046U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499406A (en) * | 2013-09-18 | 2014-01-08 | 浙江工商大学 | Perpendicularly-hung high-precision torque testing device in thermal vacuum environment |
| CN103499406B (en) * | 2013-09-18 | 2015-07-22 | 浙江工商大学 | Perpendicularly-hung high-precision torque testing device in thermal vacuum environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20150918 |
|
| EXPY | Termination of patent right or utility model |