CN204403147U - A kind of torque measurement seal shaft - Google Patents
A kind of torque measurement seal shaft Download PDFInfo
- Publication number
- CN204403147U CN204403147U CN201520056895.0U CN201520056895U CN204403147U CN 204403147 U CN204403147 U CN 204403147U CN 201520056895 U CN201520056895 U CN 201520056895U CN 204403147 U CN204403147 U CN 204403147U
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- CN
- China
- Prior art keywords
- air supporting
- supporting cover
- shaft
- air
- retainer shaft
- 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.)
- Expired - Fee Related
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a kind of torque measurement seal shaft, comprise transmission shaft, retainer shaft, nonmagnetic seat, air supporting cover, core assembly, wherein, 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 are sleeved in retainer shaft from left to right successively, and core assembly and the first air supporting are spaced a distance between overlapping, and are spaced a distance between the first air supporting cover and the second air supporting cover; Described core assembly comprises annular magnetic pole and permanent magnet, and permanent magnet is between two pieces of annular magnetic poles; Between described annular magnetic pole and nonmagnetic seat, air supporting overlaps and be equipped with seal ring between nonmagnetic seat; Outer loading equipemtn is installed on the right side of described retainer shaft; The utility model regulates cumulative error to cause position to offset, and prevents retainer shaft from occurring bending, avoids the impact of frictional force on torque measurement of plain bearing, further increase testing precision.
Description
Technical field
The utility model relates to magnet fluid sealing axle, specifically a kind of torque measurement seal shaft.
Background technique
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, working life shortens, and is difficult to control in test process, therefore often adopts the outer analog system of thermal vacuum and vacuum tank to test outward; The outside referring to and transmitted torque to vacuum tank by seal arrangement tested outward by tank, and the test of torque is carried out outside vacuum tank; To load outward as tank and measuring device 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 coupling etc., two-way shaft and tank is needed to load outward and measuring device is connected.
Model utility content
The purpose of this utility model is to provide a kind of cumulative error that regulates to cause position to offset, prevent retainer shaft from occurring bending, avoid the impact of frictional force on torque measurement of plain bearing, further increase the torque measurement seal shaft of testing precision, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technological scheme:
A kind of torque measurement seal shaft, comprises transmission shaft, retainer shaft
,nonmagnetic seat, air supporting cover, core assembly, wherein, 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 are sleeved in retainer shaft from left to right successively, and core assembly and the first air supporting are spaced a distance between overlapping, and are spaced a distance between the first air supporting cover and the second air supporting cover; Described core assembly comprises annular magnetic pole and permanent magnet, and permanent magnet is between two pieces of annular magnetic poles; Between described annular magnetic pole and nonmagnetic seat, air supporting overlaps and be equipped with seal ring between nonmagnetic seat; Outer loading equipemtn is installed on the right side of described retainer shaft, and left side connects the measured piece output shaft in thermal vacuum tank through thermal vacuum tank skin, and nonmagnetic seat is provided with magnetic fluid filling aperture; The inner two ends of described nonmagnetic seat to be all slidably connected retainer shaft by bearing, and bearing is roller bearing, and wherein, the two ends being positioned at the bearing in left side are provided with stationary axle card; On the transmission shaft in retainer shaft two sections of outsides, welding or clamping are provided with position-limited shaft card; Described retainer shaft and the first air supporting cover, the second air supporting are provided with gap between overlapping; In retainer shaft, between the first air supporting cover and the second air supporting cover, arrange supporting base, supporting base is provided with foil gauge and stabilized power supply; Above supporting base, nonmagnetic seat inwall is provided with excitation power supply, and meanwhile, supporting base is affixed annular coding mask on the side that the first air supporting is overlapped; At the first air supporting cover and supporting base, between the second air supporting cover and supporting base, be provided with gap, simultaneously, first air supporting cover and the second air supporting cover are axially uniformly distributed exhaust port near two annular end faces of supporting base, first air supporting cover is provided with a blind hole near the annular end face of supporting base, be provided with a laser probe in blind hole, laser probe is just to annular coding mask.
Further, the internal surface of described annular magnetic pole is provided with pole mark of mouth groove, is provided with sealing magnetic fluid between the micro-gap of pole mark of mouth groove and retainer shaft.
Further, the two axial ends distance position-limited shaft card 2-5 millimeter of described retainer shaft.
Further, described nonmagnetic seat is provided with two radial air inlet holes, the air-inlet cavity that radial air inlet hole puts with two air supportings respectively leads to, nonmagnetic seat be positioned at core assembly and the first air supporting overlap between be radially provided with bleeder port, the first air supporting cover is radially provided with bleeder port between overlapping 4 with the second air supporting;
Compared with prior art, the mounting point skew that the cumulative error that the utility model adapts to device interior causes, meanwhile, stationary axle card is in order to fix the geo-stationary of nonmagnetic seat and retainer shaft position, nonmagnetic seat bolt is arranged on thermal vacuum tank skin, the installation of the measured piece in thermal vacuum tank and measured piece output shaft and transmission shaft carries out at normal temperatures, after whole device is installed, nonmagnetic seat is utilized to be provided with magnetic fluid filling aperture by between the micro-gap of magnetic fluid injector mark of mouth groove and transmission shaft, nonmagnetic seat is utilized to be provided with two radial air inlet holes to the first air supporting cover and the second air supporting cover air feed, be contained in the outer loading device start on the right side of retainer shaft, after whole unit normal run, laser probe reads out the scale on annular coding mask, utilize wire by the data importing equipment of laser probe, the measurement to angle can be completed,
To sum up, the mounting point skew that the cumulative error that the utility model adapts to device interior causes, meanwhile, stationary axle card is in order to fix the geo-stationary of nonmagnetic seat and retainer shaft position, retainer shaft is set with core assembly and plays sealing effect, but core assembly does not play a supportive role; Retainer 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 in retainer shaft, two air supporting covers are spaced a distance, form air supporting to transmission shaft to support, prevent retainer shaft from occurring bending, due to air-floating apparatus frictionless advantage, avoid the impact of frictional force on torque measurement of plain bearing, further increase testing precision.
Accompanying drawing explanation
Fig. 1 is the structural representation of torque measurement seal shaft in the utility model.
In figure: 1-transmission shaft, 2-are nonmagnetic seat, 3-first air supporting cover, 4-second air supporting cover, 5-annular magnetic pole, 6-permanent magnet, 7-bleeder port, 8-inlet hole, 9-supporting base, 10-laser probe, 11-retainer shaft, 12-position-limited shaft card, 13-bearing, 14-stationary axle card, 15-seal ring.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of torque measurement seal shaft, comprises transmission shaft 1, retainer shaft 11
,nonmagnetic seat 2, air supporting cover, core assembly, wherein, air supporting cover comprises the first air supporting cover 3 and the second air supporting cover 4, described core assembly, the first air supporting cover 3, second air supporting cover 4 are sleeved in retainer shaft 11 from left to right successively, and core assembly and the first air supporting are spaced a distance between overlapping 3, are spaced a distance between the first air supporting cover 3 and the second air supporting cover 4, described core assembly comprises annular magnetic pole 5 and permanent magnet 6, and permanent magnet 6 is between two pieces of annular magnetic poles 5, and the internal surface of annular magnetic pole 5 is provided with pole mark of mouth groove, is provided with sealing magnetic fluid between the gap of pole mark of mouth groove and retainer shaft 11, between described annular magnetic pole 5 and nonmagnetic seat 2, air supporting overlaps and be equipped with seal ring 15 between nonmagnetic seat 2, outer loading equipemtn is installed on the right side of described retainer shaft 11, and left side connects the measured piece output shaft in thermal vacuum tank through thermal vacuum tank skin, and nonmagnetic seat 2 is provided with magnetic fluid filling aperture, the described inner two ends of nonmagnetic seat 2 to be all slidably connected retainer shaft 11 by bearing 13, and bearing 13 is roller bearing, and wherein, the two ends being positioned at the bearing 13 in left side are provided with stationary axle card 14, on the transmission shaft 1 in retainer shaft 11 two sections of outsides, welding or clamping are provided with position-limited shaft card 12, the two axial ends distance position-limited shaft card 2-5 millimeter of retainer shaft 5, the mounting point skew that the cumulative error that such mechanism can adapt to device interior causes, stationary axle card 14 is in order to the geo-stationary of fixing nonmagnetic seat 2 with retainer shaft 11 position simultaneously, described retainer shaft 11 and the first air supporting overlap the 3, second air supporting overlap 4 between have gap, in work, first air supporting cover 3 and retainer shaft 11, second air supporting are overlapped between 4 and retainer shaft 11 and are formed stable air film, be spaced a distance between first air supporting cover 3 and the second air supporting cover 4, retainer shaft 11 is played to the effect of support, and core assembly only plays the effect of sealing, the effect of support can not be produced, in retainer shaft 11, between the first air supporting cover 3 and the second air supporting cover 4, arrange supporting base 9, supporting base 9 is provided with foil gauge and stabilized power supply, above supporting base 9, nonmagnetic seat 2 inwall is provided with excitation power supply, meanwhile, and supporting base 9 affixed annular coding mask on the side of the first air supporting cover 3, overlap between 4 and supporting base 9 at the first air supporting cover 3 and supporting base 9, second air supporting and be provided with gap, simultaneously, first air supporting cover 3 and the second air supporting cover 4 are axially uniformly distributed exhaust port near two annular end faces of supporting base 9, first air supporting cover 3 is provided with a blind hole near the annular end face of supporting base 9, be provided with a laser probe 10 in blind hole, laser probe 10 is just to annular coding mask, described nonmagnetic seat 2 is provided with two radial air inlet holes 8, the air-inlet cavity that radial air inlet hole 8 puts with two air supportings respectively leads to, nonmagnetic seat 2 is radially provided with bleeder port 7 between core assembly and the first air supporting overlap 3, is radially provided with bleeder port 7 between the first air supporting cover 3 and the second air supporting cover 4, before using, nonmagnetic seat 2 bolt is arranged on thermal vacuum tank skin, the installation of the measured piece in thermal vacuum tank and measured piece output shaft and transmission shaft carries out at normal temperatures, after whole device is installed, nonmagnetic seat 2 is utilized to be provided with magnetic fluid filling aperture by between the micro-gap of magnetic fluid injector mark of mouth groove and transmission shaft, utilize nonmagnetic seat 2 to be provided with two radial air inlet holes 8 and overlap 4 air feed to the first air supporting cover 3 and the second air supporting, be contained in the outer loading device start on the right side of retainer shaft 11, after whole unit normal run, laser probe 10 reads out the scale on annular coding mask 9, utilize wire by the data importing equipment of laser probe 10, the measurement to angle can be completed.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any reference character in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to mode of execution, but not each mode of execution only comprises an independently technological scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technological scheme in each embodiment also through appropriately combined, can form other mode of executions that it will be appreciated by those skilled in the art that.
Claims (4)
1. a torque measurement seal shaft, comprises transmission shaft (1), retainer shaft (11)
,nonmagnetic seat (2), air supporting cover, core assembly, is characterized in that, air supporting cover comprises the first air supporting cover (3) and the second air supporting cover (4); Described core assembly, the first air supporting cover (3), the second air supporting cover (4) are sleeved in retainer shaft (11) from left to right successively, and be spaced a distance between core assembly and the first air supporting cover (3), be spaced a distance between the first air supporting cover (3) and the second air supporting cover (4); Described core assembly comprises annular magnetic pole (5) and permanent magnet (6), and permanent magnet (6) is positioned between two pieces of annular magnetic poles (5); Between described annular magnetic pole (5) and nonmagnetic seat (2), air supporting overlaps and be equipped with seal ring (15) between nonmagnetic seat (2); Outer loading equipemtn is installed on the right side of described retainer shaft (11), and left side connects the measured piece output shaft in thermal vacuum tank through thermal vacuum tank skin, and nonmagnetic seat (2) is provided with magnetic fluid filling aperture; The inner two ends of described nonmagnetic seat (2) to be all slidably connected retainer shaft (11) by bearing (13), and bearing (13) is roller bearing, and wherein, the two ends being positioned at the bearing (13) in left side are provided with stationary axle card (14); On the transmission shaft (1) in retainer shaft (11) two sections of outsides, welding or clamping are provided with position-limited shaft card (12); Gap is provided with between described retainer shaft (11) and the first air supporting cover (3), the second air supporting cover (4); Upper in retainer shaft (11), be positioned between the first air supporting cover (3) and the second air supporting cover (4) supporting base (9) be set, supporting base (9) is provided with foil gauge and stabilized power supply; Supporting base (9) top, nonmagnetic seat (2) inwall are provided with excitation power supply, meanwhile, and supporting base (9) affixed annular coding mask on the side of the first air supporting cover (3); At the first air supporting cover (3) and supporting base (9), between the second air supporting cover (4) and supporting base (9), be provided with gap, simultaneously, first air supporting cover (3) and the second air supporting cover (4) are axially uniformly distributed exhaust port near two annular end faces of supporting base (9), first air supporting cover (3) is provided with a blind hole near the annular end face of supporting base (9), be provided with a laser probe (10) in blind hole, laser probe (10) is just to annular coding mask.
2. torque measurement seal shaft according to claim 1, is characterized in that, the internal surface of described annular magnetic pole (5) is provided with pole mark of mouth groove, is provided with sealing magnetic fluid between the gap of pole mark of mouth groove and retainer shaft (11).
3. torque measurement seal shaft according to claim 1, is characterized in that, the two axial ends distance position-limited shaft card 2-5 millimeter of described retainer shaft (5).
4. torque measurement seal shaft according to claim 1, it is characterized in that, described nonmagnetic seat (2) is provided with two radial air inlet holes (8), the air-inlet cavity that radial air inlet hole (8) puts with two air supportings respectively leads to, nonmagnetic seat (2) is positioned between core assembly and the first air supporting cover (3) and is radially provided with bleeder port (7), is radially provided with bleeder port (7) between the first air supporting cover (3) and the second air supporting cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520056895.0U CN204403147U (en) | 2015-01-27 | 2015-01-27 | A kind of torque measurement seal shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520056895.0U CN204403147U (en) | 2015-01-27 | 2015-01-27 | A kind of torque measurement seal shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204403147U true CN204403147U (en) | 2015-06-17 |
Family
ID=53427010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520056895.0U Expired - Fee Related CN204403147U (en) | 2015-01-27 | 2015-01-27 | A kind of torque measurement seal shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204403147U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132582A (en) * | 2019-05-21 | 2019-08-16 | 北京空间飞行器总体设计部 | The load of friction free torque and measuring device under vacuum environment |
-
2015
- 2015-01-27 CN CN201520056895.0U patent/CN204403147U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132582A (en) * | 2019-05-21 | 2019-08-16 | 北京空间飞行器总体设计部 | The load of friction free torque and measuring device under vacuum environment |
| CN110132582B (en) * | 2019-05-21 | 2021-11-09 | 北京空间飞行器总体设计部 | Friction-free torque loading and measuring device in vacuum environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20160127 |
|
| EXPY | Termination of patent right or utility model |