CN204269364U - Gear drive measurement mechanism and there is its aeromotor gear train assembly - Google Patents
Gear drive measurement mechanism and there is its aeromotor gear train assembly Download PDFInfo
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- CN204269364U CN204269364U CN201420758929.6U CN201420758929U CN204269364U CN 204269364 U CN204269364 U CN 204269364U CN 201420758929 U CN201420758929 U CN 201420758929U CN 204269364 U CN204269364 U CN 204269364U
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Abstract
The utility model discloses a kind of gear drive measurement mechanism and have its aeromotor gear train assembly, transmission gear is installed in casing, and the gear shaft of transmission gear is hollow structure; This gear drive measurement mechanism comprises: the read head of the angular encoder servo-actuated with transmission gear and the displacement signal for acquisition angles scrambler, angular encoder is fixedly connected with the endoporus of gear shaft through web member, and read head to be installed on casing and to be oppositely arranged with angular encoder.By arranging with the inner hole of the gear shaft of transmission gear with fixing angular encoder, and be installed on the read head that casing is oppositely arranged with angular encoder, achieve tested gear and complete driving-chain and be arranged on measurement demand on real casing, simulation actual condition, improve the reliability of measurement data, thus ensure that precision and the accuracy of follow-up motion transmission error measure, for the work such as aircraft engine accessory Design of Transmission System and analysis provide guidance.
Description
Technical field
The utility model relates to gear drive field, especially, relates to a kind of gear drive measurement mechanism.
Background technology
Gear drive error is the principal element causing gear train vibration and noise, and therefore, the research in the Analysis and measurement of gear drive error is design of gears and an important topic in application always.The measurement essence of gear drive error is measure the real-time rotation displacement of driven wheel.According to the difference of Test Cycle, measure the gear drive error obtained and can be divided into manufacture driving error, static driving error and motion transmission error.Dynamic transmission error of gear not only contains gear manufacture error, backlash, the distortion of gear stand under load, also characterizes the gear train assembly dynamic performance indexs such as the dynamic loading in working gear process simultaneously.
According to scientific and technological information system result for retrieval displays such as Chinese patent database, foreign patent database, Chinese Periodicals Database, the general information database of dimension, existing gear drive error measuring method is: " being taken out separately by cylindrical gear pair to be measured; build simple body structure and support; drive with motor; load with magnetic powder brake; adopt magnetic grid or grating to measure the real-time rotation displacement of driven wheel as angular encoder, thus calculate gear drive error ".Research in bevel gear drive error measurement method and the application in aircraft engine accessory kinematic train etc. thereof there is not yet pertinent literature report.
Aircraft engine accessory kinematic train belongs to High Speed Gearing category, and its dynamic performance has material impact to overall engine serviceability.Measure the accessory drive gear system gear drive error under actual condition, for the dynamics Design of aircraft engine accessory kinematic train and fault analysis, there is great importance.
Aircraft engine accessory kinematic train complexity, compact conformation, rotating speed are higher, measure central transmission bevel gear motion transmission error then there are following 3 deficiencies as adopted existing method:
1, separately gear under test pair is taken out measurement driving error, be difficult to the installation situation of simulation gear in aeromotor, thus comparatively big error may be caused to the item such as " gear shifting quadrant texturing ", " shaft distortion ", " alignment error " in " dynamic transmission error of gear ";
2, the form of " motor direct-drive, magnetic powder brake loads " is adopted to be difficult to reach aircraft engine accessory kinematic train central cone gear pair rated speed and nominal load;
3, as adopted existing gear drive error measuring method, then have ignored the impact of each annex on accessory drive gear system meshing performance, the dynamic loading that Main Drive Bevel Gear bears in accessory drive gear system can not be simulated.
In sum, as adopted existing method to measure aircraft engine accessory kinematic train Main Drive Bevel Gear motion transmission error, then there is larger gap with its actual condition, can not the dynamic performance of complete effective reaction accessory drive system.
Utility model content
The utility model provides a kind of gear drive measurement mechanism and has its aeromotor gear train assembly, cannot the low technical matters of the measuring accuracy that causes of Reality simulation operating mode with the tested gear pair solving existing aeromotor.
The technical solution adopted in the utility model is as follows:
A kind of gear drive measurement mechanism, for the measurement of the motion transmission error of the transmission gear of aeromotor, transmission gear is installed in casing, and the gear shaft of transmission gear is hollow structure;
Gear drive measurement mechanism comprises: the read head of the angular encoder servo-actuated with transmission gear and the displacement signal for acquisition angles scrambler, angular encoder is fixedly connected with the endoporus of gear shaft through web member, and read head to be installed on casing and to be oppositely arranged with angular encoder.
Further, web member comprises adapter sleeve, the first end of adapter sleeve and the endoporus interference fit of gear shaft, second end of adapter sleeve is provided with internal thread, second end place is provided with mount pad and cover plate, angular encoder is between mount pad and cover plate, and cover plate is through fixing angular encoder with the securing member of screw-internal thread fit.
Further, web member comprises connection back shaft, connect the first end of back shaft and the endoporus interference fit of gear shaft, the second end connecting back shaft is provided with external thread, second end place is provided with mount pad and cover plate, angular encoder is between mount pad and cover plate, and angular encoder is fixed by the securing member of cover plate through coordinating with external thread.
Further, angular encoder is magnetic grid scrambler, and read head is connected on casing through mounting bracket.
Further, read head is flexibly connected with mounting bracket, and the fixed position of read head is adjustable.
Further, the spacing between read head and magnetic grid scrambler is 0.6 ± 0.2mm.
Further, transmission gear is drive bevel gear.
According to another aspect of the present utility model, additionally provide a kind of aeromotor gear train assembly, comprise the transmission gear be installed in casing and the driver driving transmission gear, transmission gear comprises driving wheel and engaged wheel, and driving wheel, engaged wheel place are respectively equipped with above-mentioned gear drive measurement mechanism.
The utility model has following beneficial effect:
The utility model gear drive measurement mechanism and there is its aeromotor gear train assembly, by arranging with the inner hole of the gear shaft of transmission gear with fixing angular encoder, and be installed on the read head that casing is oppositely arranged with angular encoder, achieve tested gear and complete driving-chain and be arranged on measurement demand on real casing, and tested gear adopts real annex to load, simulation actual condition, improve the reliability of measurement data, thus ensure that precision and the accuracy of follow-up motion transmission error measure, for the work such as aircraft engine accessory Design of Transmission System and analysis provide guidance.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the utility model preferred embodiment gear drive measurement mechanism.
Description of reference numerals:
1, driving wheel; 2, engaged wheel; 3, adapter sleeve; 4, bearing; 5, casing; 6, front end end cover; 7, the second attachment screw; 8, the second mounting bracket; 9, the 3rd attachment screw; 10, the second pressing plate; 11, the second read head; 12, the second magnetic grid scrambler; 13, the second magnetic grid cover plate; 14, screw is tightened; 15, the second magnetic grid mount pad; 16, back shaft is connected; 17, rear end cap; 18, the first magnetic grid mount pad; 19, the first magnetic grid scrambler; 20, the first magnetic grid cover plate; 21, fastening nut; 22, the first attachment screw; 23, the first pressing plate; 24, the first read head; 25, the first mounting bracket.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Preferred embodiment of the present utility model provides a kind of gear drive measurement mechanism, and for the measurement of the motion transmission error of the transmission gear of aeromotor, transmission gear is installed in casing, and the gear shaft of transmission gear is hollow structure; The present embodiment gear drive measurement mechanism comprises: the read head of the angular encoder servo-actuated with transmission gear and the displacement signal for acquisition angles scrambler, angular encoder is fixedly connected with the endoporus of gear shaft through web member, and read head to be installed on casing and to be oppositely arranged with angular encoder.Because transmission gear is installed in casing, real accessory can be adopted to load transmission gear, as simulated the actual condition of aircraft engine accessory kinematic train, existing accessory drive exerciser is adopted to drive transmission gear, because angular encoder is fixed on transmission gear through the endoporus of gear shaft, servo-actuated in the lump with transmission gear, read head is installed on casing, relative with angular encoder, to measure the displacement signal obtaining angular encoder and rotate, the output terminal of read head is connected with processor, the signal that processor detects according to read head is to obtain the real-time rotate speed of tested gear.The present embodiment gear drive measurement mechanism, by the tachometric survey of simulation kinematic train under actual condition, improve the reliability of measurement data, thus ensure that precision and the accuracy of follow-up motion transmission error measure, for the work such as aircraft engine accessory Design of Transmission System and analysis provide guidance.
With reference to Fig. 1, alternatively, in the present embodiment, transmission gear is drive bevel gear, and angular encoder is magnetic grid scrambler, and drive bevel gear comprises driving wheel 1 and the engaged wheel 2 of engagement.Be installed in casing 5 through bearing 4 respectively at driving wheel 1 and engaged wheel 2, casing 5 is fixedly connected with front end end cover 6 and rear end cap 17 through securing member.In the side of driving wheel 1, endoporus and one end interference fit being connected back shaft 16 of the gear shaft of driving wheel 1, the other end connecting back shaft 16 is provided with external thread, alternatively, the magnitude of interference 0.03 ~ 0.06mm; Turned left to load by the right side together after first magnetic grid scrambler 19, first magnetic grid mount pad 18 installs with the first magnetic grid cover plate 20 outside casing and be connected the other end of back shaft 16, connected with the external thread being connected back shaft 16 end by fastening nut 21, realize being connected between the first magnetic grid scrambler 19 and driving wheel 1, preferably, externally threaded thread rotary orientation is consistent with the rotation direction of driving wheel 1.First mounting bracket 25 is connected with rear end cap 17 by the first attachment screw 22, and the first read head 24 is mounted on the first mounting bracket 25.Preferably, the first read head 24 is flexibly connected with the first mounting bracket 25, makes the fixed position of the first read head 24 adjustable.In the present embodiment, first read head 24 is fixed to clamp the first read head 24 by the first attachment screw 22 and the first mounting bracket 25 through the first pressing plate 23, and the position coordinated with the first mounting bracket 25 by adjustment first pressing plate 23 is to regulate the position location of the first read head 24, preferably, the spacing between the first read head 24 and the first magnetic grid scrambler 19 is 0.6 ± 0.2mm.
In the side of engaged wheel 2, the endoporus of the gear shaft of engaged wheel 2 and one end interference fit of adapter sleeve 3, the other end of adapter sleeve 3 is provided with internal thread, alternatively, the magnitude of interference 0.03 ~ 0.06mm; Load from top to bottom together with after second magnetic grid scrambler 12, second magnetic grid mount pad 15 installs outside casing 5 with the second magnetic grid cover plate 13, be connected with the internal thread of the other end of adapter sleeve 3 by tightening screw 14, realize being connected between the second magnetic grid scrambler 12 and engaged wheel 2, preferably, the thread rotary orientation of internal thread is consistent with the rotation direction of engaged wheel 2.Second mounting bracket 8 is connected with front end end cover 6 by the second attachment screw 7, and the second read head 11 is mounted on the second mounting bracket 8.Preferably, the second read head 11 is flexibly connected with the second mounting bracket 8, makes the fixed position of the second read head 11 adjustable.In the present embodiment, second read head 11 is fixed to clamp the second read head 11 by the 3rd attachment screw 9 and the second mounting bracket 8 through the second pressing plate 10, and the position coordinated with the second mounting bracket 8 by adjustment second pressing plate 10 is to regulate the position location of the second read head 11, preferably, the spacing between the second read head 11 and the second magnetic grid scrambler 12 is 0.6 ± 0.2mm.
In the present embodiment, drive the exerciser that the driver of transmission gear adopts accessory drive system special, to simulate the real working condition of aircraft engine accessory kinematic train, magnetic grid scrambler is with tested gear real-time motion, the displacement signal measuring the magnetic grid scrambler rotation obtained is input to computing machine by read head, obtains the motion transmission error of tested gear pair under actual condition by formulae discovery.
According to another aspect of the present utility model, additionally provide a kind of aeromotor gear train assembly, comprise the transmission gear be installed in casing and the driver driving transmission gear, transmission gear comprises driving wheel and engaged wheel, and driving wheel, engaged wheel place are respectively equipped with the gear drive measurement mechanism of above-described embodiment.
The present embodiment aeromotor gear train assembly, gear under test and complete annex gear transmission chain are arranged on real accessory drive gearbox, existing accessory drive exerciser is adopted to drive, the all real accessory of aeromotor are installed realize loading, simulation aircraft engine accessory kinematic train actual condition, the dynamic transmission error of gear realized under actual condition is measured, improve the reliability of measurement data, thus ensure that precision and the accuracy of follow-up motion transmission error measure, for the work such as aircraft engine accessory Design of Transmission System and analysis provide guidance.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a gear drive measurement mechanism, for the measurement of the motion transmission error of the transmission gear of aeromotor, described transmission gear is installed in casing, it is characterized in that, the gear shaft of described transmission gear is hollow structure;
Described gear drive measurement mechanism comprises: the angular encoder servo-actuated with described transmission gear and the read head for the displacement signal that gathers described angular encoder, described angular encoder is fixedly connected with through the endoporus of web member with described gear shaft, and described read head to be installed on described casing and to be oppositely arranged with described angular encoder.
2. gear drive measurement mechanism according to claim 1, is characterized in that,
Described web member comprises adapter sleeve, the first end of described adapter sleeve and the endoporus interference fit of described gear shaft, second end of described adapter sleeve is provided with internal thread, described second end place is provided with mount pad and cover plate, described angular encoder is between described mount pad and described cover plate, and described cover plate is through fixing described angular encoder with the securing member of described screw-internal thread fit.
3. gear drive measurement mechanism according to claim 1, is characterized in that,
Described web member comprises connection back shaft, the first end of described connection back shaft and the endoporus interference fit of described gear shaft, second end of described connection back shaft is provided with external thread, described second end place is provided with mount pad and cover plate, described angular encoder is between described mount pad and described cover plate, and described angular encoder is fixed by the securing member of described cover plate through coordinating with described external thread.
4. the gear drive measurement mechanism according to claim 2 or 3, is characterized in that,
Described angular encoder is magnetic grid scrambler, and described read head is connected on described casing through mounting bracket.
5. gear drive measurement mechanism according to claim 4, is characterized in that,
Described read head is flexibly connected with described mounting bracket, and the fixed position of described read head is adjustable.
6. gear drive measurement mechanism according to claim 5, is characterized in that,
Spacing between described read head and described magnetic grid scrambler is 0.6 ± 0.2mm.
7. gear drive measurement mechanism according to claim 1, is characterized in that,
Described transmission gear is drive bevel gear.
8. an aeromotor gear train assembly, it is characterized in that, comprise the transmission gear be installed in casing and the driver driving described transmission gear, described transmission gear comprises driving wheel and engaged wheel, and described driving wheel, described engaged wheel place are respectively equipped with the arbitrary described gear drive measurement mechanism of claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420758929.6U CN204269364U (en) | 2014-12-04 | 2014-12-04 | Gear drive measurement mechanism and there is its aeromotor gear train assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420758929.6U CN204269364U (en) | 2014-12-04 | 2014-12-04 | Gear drive measurement mechanism and there is its aeromotor gear train assembly |
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| Publication Number | Publication Date |
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| CN204269364U true CN204269364U (en) | 2015-04-15 |
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| CN201420758929.6U Active CN204269364U (en) | 2014-12-04 | 2014-12-04 | Gear drive measurement mechanism and there is its aeromotor gear train assembly |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486219A (en) * | 2015-11-06 | 2016-04-13 | 中南大学 | Aviation high-speed gear dynamic transmission error measuring system |
| CN108489444A (en) * | 2018-04-19 | 2018-09-04 | 中国航发南方工业有限公司 | Bevel gear pair locating distance measuring device and measuring method |
| CN109632294A (en) * | 2019-01-05 | 2019-04-16 | 中国船舶重工集团公司第七0三研究所 | A kind of quasi-static transmission error test macro of single gear |
-
2014
- 2014-12-04 CN CN201420758929.6U patent/CN204269364U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486219A (en) * | 2015-11-06 | 2016-04-13 | 中南大学 | Aviation high-speed gear dynamic transmission error measuring system |
| CN108489444A (en) * | 2018-04-19 | 2018-09-04 | 中国航发南方工业有限公司 | Bevel gear pair locating distance measuring device and measuring method |
| CN109632294A (en) * | 2019-01-05 | 2019-04-16 | 中国船舶重工集团公司第七0三研究所 | A kind of quasi-static transmission error test macro of single gear |
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