CN206889150U - A kind of starter inserted type output shaft assembly - Google Patents
A kind of starter inserted type output shaft assembly Download PDFInfo
- Publication number
- CN206889150U CN206889150U CN201720760295.1U CN201720760295U CN206889150U CN 206889150 U CN206889150 U CN 206889150U CN 201720760295 U CN201720760295 U CN 201720760295U CN 206889150 U CN206889150 U CN 206889150U
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- Prior art keywords
- axle
- major axis
- output
- hole
- thin safe
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- 239000007858 starting material Substances 0.000 title claims abstract description 48
- 125000006850 spacer group Chemical group 0.000 claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims description 17
- 230000008450 motivation Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010338 mechanical breakdown Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
It the utility model is related to a kind of starter inserted type output shaft assembly, the starter inserted type output shaft assembly includes output major axis, export short axle and thin safe axle, the axle center of the output major axis, export the axially disposed axis hole in axle center of short axle, thin safe axle is placed in output short axle, in the axis hole for exporting major axis, the front end of thin safe axle sets limit pin hole, export the axially disposed chute in front end of axis hole in major axis, during so that thin safe axle is inserted in axis hole, the first spacer pin is inserted in the limit pin hole of thin safe axle front end to be placed in exporting in the axial slide of major axis front end, between thin safe axle and output major axis circumferential spacing connection is carried out through the first spacer pin；Thrust stepped hole is additionally provided with the middle part of the axis hole of the output major axis, the front end of thin safe axle is socketed with the spring in compressive state, and the spring is placed between thrust stepped hole and the first spacer pin, and the leading inside of thin safe axle sets thin safe axle shearind section.
Description
Technical field
Aviation starter technical field is the utility model is related to, particularly a kind of starter inserted type output shaft assembly.
Background technology
Critical product of the starter as engine starting system in air line, is widely used in military-civil aircraft,
Its performance directly determines whether engine starts success, and output shaft is the torsion pass tie for connecting engine and starter, is
The important component of starter.Traditional output shaft designs for integral type, and this output shaft design structure is simple, its shear axis
Predominantly consider the trouble free service of engine and carry out twisting off design protection, but the trouble free service of starter can not be taken into account simultaneously
It is required that.If in the case where there is starter overload or mechanical breakdown, Integral output shaft can not twist off protection starter in time,
Closely starter can be caused further to damage, produce serious consequence, cause heavy economic losses.Also there is a small amount of output shaft
A kind of air turbine starter output is disclosed using split-type design, such as Chinese granted patent notification number CN205330860U
Shaft assembly, including output shaft, Coupling Shaft, wherein output shaft assembly also include fastening screw rod, fasten nut, in the output shaft
Between the external diameter of part be provided with hollow hole, form weak section, play overload protection, one end running fire motivation of the output shaft is another
End is connected by fastening screw rod and fastening nut to fasten with Coupling Shaft；Have on one end end face that the output shaft engages with Coupling Shaft
Several grooves, one end end face that the Coupling Shaft engages with output shaft carry several projections with fit depressions, realized
Positive torsion pass, the function of reversely disengaging.Above-mentioned starter output shaft assembly connects output shaft and Coupling Shaft by fastening screw rod, right
Starter can be protected, but above-mentioned fastening screw rod fastens connection through fastening nut with Coupling Shaft, due to Coupling Shaft and output shaft
Rotation and vibrational state, nut at a high speed are constantly under working condition easily to loosen, and then are occurred fastening screw rod and fastened nut phase
Situation about mutually departing from, the stability and reliability of work are had a strong impact on, and export major axis with output short axle because nut connects, do not had
The standby chimeric adaptive adjustment capability of safety, if in safe work state, nut loosens because of vibration, influences to export major axis and defeated
Go out the compactness that short axle is normally fitted together to.
Utility model content
The technical problems to be solved in the utility model is to provide the starting that a kind of Stability Analysis of Structures is reliable, can carry out twisting off protection
Machine inserted type output shaft assembly.
In order to solve the above technical problems, starter inserted type output shaft assembly provided by the utility model, including output length
Axle, output short axle and thin safe axle, the tail end of the output short axle coordinate with starter transmission, the end of the output short axle front end
It is axially projecting on face that multiple terraced teeth of transmission are set, respectively it is driven the side of terraced tooth circumferentially and sets right angle to start face, opposite side is set
Slope parting surface is put, the tail end of the output major axis sets multiple transmission grooves being adapted with the terraced thread form shape of transmission, institute
The front end and driving engine for stating output major axis coordinate, the axle center of the output major axis, the axially disposed axle in axle center for exporting short axle
Hole, the thin safe axle are placed in the output short axle, exported in the axis hole of major axis, and the front end of the thin safe axle sets installation the
The limit pin hole of one spacer pin, the axially disposed chute in front end for exporting axis hole in major axis, so that thin safe axle insertion institute
When stating in axis hole, the first spacer pin of thin safe axle front end limit pin hole insertion is placed in the chute of the output major axis front end,
Between thin safe axle and the output major axis circumferential spacing connection is carried out through the first spacer pin；The middle part of the axis hole of the output major axis
Provided with thrust stepped hole, the thin safe axle is equipped with the spring with thrust, and the spring is placed in the thrust stepped hole and described
Between first spacer pin, the front end of the thin safe axle sets thin safe axle shearind section；The tail end of the thin safe axle, the output
The tail end of short axle extends radially through setting pin axis jacks respectively, and the tail end of the thin safe axle is placed in the output short axle tail end
When in axis hole, insert the second spacer pin along pin axis jacks and the thin safe axle and output short axle are attached, finally realize logical
The thin safe axle with holddown spring is crossed to be fitting to connection output major axis with output short axle；During starting state, starter drives defeated
Go out short axle rotation, output short axle starts face through being driven the right angle of terraced tooth and carries out transmission cooperation with output major axis, so as to start with it is defeated
Go out the engine of long axis connection；After normal working of engine, because engine speed is higher than starter rotating speed, at this moment then by defeated
Go out major axis upslope parting surface and coordinate with exporting the slope parting surface of short axle, the thin safe axle with holddown spring enters parting surface
Row axial compression is fitted together to, and is ensured under engine work state, is run at high speed with starter output shaft；In engine just
When often occurring output torque increase in short-term but the maximum torque situation less than starter trouble free service during operating, thin safe axle is cut
In the case that elastic deformation occurs for segment, chimeric parting surface can be by the elastic force automatic adjusument of holddown spring, and holding is stablized embedding
Close；If occurring engine speed excess revolutions suddenly when engine operates or the failures such as starter part is stuck, make engine
After moment of torsion increases to the maximum torque more than starter trouble free service suddenly, the shearind section of thin safe axle will in twisting resistance and
Accelerate fracture under responsive to axial force in time, output major axis is rapidly separated with the chimeric parting surface for exporting short axle, is effectively avoided to rising
Motivation causes secondary destruction, protects starter safety in time.
Further, the stage casing of the output major axis sets output major axis shearind section, is exported with starter in a start up state
When moment of torsion is increased to more than engine health starting torque value, the shearind section fracture of major axis is exported, it is super that starting is carried out to engine
Carry safeguard protection.
The technique effect of utility model：（1）Starter inserted type output shaft assembly of the present utility model, relative to existing skill
Art, spacer pin and the spring of compression are set on thin safe axle, assembling is simple and reliable, in normal operating conditions, keeps output
Major axis and output short axle are chimeric stable, and safety and reliability is high so that after the thin safe axle that is in an emergency is twisted off, thin peace
Holoaxial is rapidly separated, and is effectively protected starter safety, is avoided the occurrence of catastrophic failure；（2）During failure maintenance, it is only necessary to more
The thin safe axle of low cost is changed, can effectively reduce maintenance cost；（3）The stage casing for exporting major axis sets output major axis shearind section, keeps away
Exempt to overload in start-up period starter, cause starter to damage, starter is protected.
Brief description of the drawings
The utility model is described in further detail with reference to Figure of description：
Fig. 1 is the structural representation of starter inserted type output shaft assembly of the present utility model；
Fig. 2 is the cross-sectional view of the italic tooth of the utility model starter inserted type output shaft assembly；
Fig. 3 is the cross-sectional view vertically of starter inserted type output shaft assembly of the present utility model.
In figure：Major axis 1 is exported, engine connection gear 11, output major axis shearind section 12, exports short axle 2, starter connection
Gear 21, is driven terraced tooth 22, and right angle starts face 23, slope parting surface 24, thin safe axle 3, thin safe axle shearind section 31, spring 4,
First spacer sleeve 5, the second spacer sleeve 6, chute 7, the first spacer pin 8, the second spacer pin 9.
Embodiment
Embodiment 1 as shown in Figure 1 to Figure 3, the starter inserted type output shaft assembly of the present embodiment, including output major axis
1st, short axle 2 and thin safe axle 3 are exported, the tail end of the output short axle 2 is through starter connection gear 21 and starter（Do not show in figure
Go out）Transmission coordinates, according to the rotation direction of starter, engine, axially projecting setting on the end face of the front end of output short axle 2
3 terraced teeth 22 of transmission, are respectively driven terraced tooth 22 and are distributed on the end face of output short axle 2 front end, be respectively driven one of terraced tooth 22 circumferentially
Side sets right angle to start face 23, and opposite side sets slope parting surface 24, and the tail end of output major axis 1 sets 3 with being driven terraced tooth 22
The transmission groove that shape is adapted, the front end for exporting major axis 1 connect spline 11 and engine through engine（Not shown in figure）Pass
Dynamic to coordinate, the axle center of the output major axis 1, the axially disposed axis hole in axle center for exporting short axle 2, thin safe axle 3 are placed in output short axle
1st, in the axis hole for exporting major axis 2, the limit pin hole of the front end of thin safe axle 3 sets the first spacer pin 8, exports axis hole in major axis 1
The axially disposed chute 7 in front end, during so that thin safe axle 3 is inserted in axis hole, the first spacer pin 8 of the thin safe front end of axle 3 is put
In in the chute 7 of output major axis 1 front end, circumferential spacing company is carried out through the first spacer pin 8 between thin safe axle 3 and output major axis 1
Connect；Thrust stepped hole 13 is additionally provided with the middle part of the axis hole of the output major axis 1, the front end of thin safe axle 3 is socketed with compression shape
The spring 4 of state, the first spacer sleeve 5, the second spacer sleeve 6, the tail end of the first spacer sleeve 5 are in contact with thrust step 13, spring 4
Tail end is in contact with the front end of the first spacer sleeve 5, and the front end of spring 4 is in contact with the tail end of the second spacer sleeve 5, the second spacer sleeve
6 front end is in contact with the first spacer pin 8, so that spring 4 is placed in thrust stepped hole 13 through the first spacer sleeve 5, the second spacer sleeve 6
And first between spacer pin 8, the leading inside of thin safe axle 3 sets thin safe axle shearind section 31；The tail end of the thin safe axle 3,
The tail end of output short axle 2 extends radially through setting pin axis jacks respectively, and the tail end of thin safe axle 3 is placed in the output tail end of short axle 2
When in axis hole, insert the second spacer pin 9 along pin axis jacks and thin safe axle 3 and output short axle 2 are attached, so that output major axis
It is fitting to connection with output short axle 2；The stage casing for exporting major axis 1 sets output major axis shearind section 12；In use, the biography of output short axle 2
It is mutually chimeric with the transmission groove for exporting major axis 1 to move terraced tooth 22, and during starting state, starter drives output short axle 2 to rotate, and exports short
Axle 2 starts face 23 through being driven the right angle of terraced tooth 22, drives engine to start, and output torque is increased to more than hair in a start up state
After motivation trouble free service torque value, output major axis shearind section 12 is twisted off, starting overload protection is carried out to engine；Engine is normal
After operating, entered by slope parting surface 24, thin safe axle 3 of the output major axis 1 through transmission groove and the terraced tooth 22 of transmission with output short axle 2
Row transmission coordinates, band mechanical starter synchronous axial system；Occur engine speed excess revolutions or starter suddenly when engine operates
The failures such as part is stuck, after engine torque is increased to the maximum torque more than starter trouble free service suddenly, twist off thin
Safe axle shearind section 31, output major axis 1 and exports the chimeric parting surface of short axle 2 and is rapidly separated, and avoids causing starter secondary
Destroy, protection starter safety.
Obviously, above-described embodiment is only intended to clearly illustrate the utility model example, and is not to this reality
With the restriction of new embodiment.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.And these
Belong to obvious changes or variations that spirit of the present utility model is amplified out still in the scope of protection of the utility model
Among.
Claims (2)
- A kind of 1. starter inserted type output shaft assembly, it is characterised in that including：Major axis, output short axle and thin safe axle are exported, The tail end of the output short axle is connected with the starter transmission mechanism, axially projecting setting on the end face of the output short axle front end Multiple terraced teeth of transmission, respectively it is driven the side of terraced tooth circumferentially and sets right angle to start face, opposite side sets slope parting surface, described defeated The tail end for going out major axis sets multiple transmission grooves being adapted with the terraced thread form shape of transmission, the front end of the output major axis and hair Motivation transmission coordinates, the axle center of the output major axis, the axially disposed axis hole in axle center for exporting short axle, and the thin safe axle is placed in institute State output short axle, export in the axis hole of major axis, the front end of the thin safe axle sets limit pin hole, described to export axis hole in major axis The axially disposed chute in front end, during so that thin safe axle is inserted in the axis hole, the limit pin hole insertion of thin safe axle front end First spacer pin is placed in the axial slide of the output major axis front end, through the first limit between thin safe axle and the output major axis Position pin carries out circumferential spacing connection；Thrust stepped hole is additionally provided with the middle part of the axis hole of the output major axis, before the thin safe axle End is socketed with the spring in compressive state, and the spring is placed between the thrust stepped hole and first spacer pin, described The leading inside of thin safe axle sets thin safe axle shearind section；The tail end difference of the tail end of the thin safe axle, the output short axle Setting pin-and-hole is extended radially through, when the tail end of the thin safe axle is placed in the axis hole of the output short axle tail end, is inserted along pin-and-hole Enter the second spacer pin to be attached the thin safe axle and output short axle.
- 2. starter inserted type output shaft assembly according to claim 1, it is characterised in that the stage casing of the output major axis Output major axis shearind section is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720760295.1U CN206889150U (en) | 2017-06-27 | 2017-06-27 | A kind of starter inserted type output shaft assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720760295.1U CN206889150U (en) | 2017-06-27 | 2017-06-27 | A kind of starter inserted type output shaft assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206889150U true CN206889150U (en) | 2018-01-16 |
Family
ID=61317377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720760295.1U Expired - Fee Related CN206889150U (en) | 2017-06-27 | 2017-06-27 | A kind of starter inserted type output shaft assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206889150U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612614A (en) * | 2018-05-02 | 2018-10-02 | 中国航发湖南动力机械研究所 | Power plant and Combined type safety axis |
| CN109139326A (en) * | 2017-06-27 | 2019-01-04 | 中国航发常州兰翔机械有限责任公司 | A kind of starter inserted type output shaft assembly |
| CN112682239A (en) * | 2020-12-24 | 2021-04-20 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Anti-reverse belt emergency release mechanism |
-
2017
- 2017-06-27 CN CN201720760295.1U patent/CN206889150U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139326A (en) * | 2017-06-27 | 2019-01-04 | 中国航发常州兰翔机械有限责任公司 | A kind of starter inserted type output shaft assembly |
| CN109139326B (en) * | 2017-06-27 | 2024-04-26 | 中国航发常州兰翔机械有限责任公司 | Starter embedded output shaft assembly |
| CN108612614A (en) * | 2018-05-02 | 2018-10-02 | 中国航发湖南动力机械研究所 | Power plant and Combined type safety axis |
| CN112682239A (en) * | 2020-12-24 | 2021-04-20 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Anti-reverse belt emergency release mechanism |
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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: 20180116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |