CN106704409B - A kind of single input transmission device with clutch function - Google Patents
A kind of single input transmission device with clutch function Download PDFInfo
- Publication number
- CN106704409B CN106704409B CN201710124114.0A CN201710124114A CN106704409B CN 106704409 B CN106704409 B CN 106704409B CN 201710124114 A CN201710124114 A CN 201710124114A CN 106704409 B CN106704409 B CN 106704409B
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- China
- Prior art keywords
- center roller
- disk
- frictional disk
- input shaft
- output
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
- F16D43/21—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Friction Gearing (AREA)
Abstract
The present invention relates to a kind of single input transmission devices with clutch function, including：Input shaft, center roller, pressing friction disk, spring, output rotor and shell；The helical interfaces of two groups of opposite directions are distributed between input shaft and center roller；Under the action of the spring, center roller and input shaft compression are fit together for pressing friction disk.When the device is operated, input shaft rotates, and center roller axially moves, until center roller is bonded with output rotor, output rotor is transferred torque to by the friction of center roller and output rotor；When device power cut-off, center roller is detached with output rotor under the action of the spring, and the movement of output rotor and state are not passed to input shaft, i.e. single input.The configuration of the present invention is simple has the function of that single input transmits torque and idle automatic clutch.Especially suitable for the in-orbit manual-operated emergent transmission of large-scale spaceflight apparatus device.
Description
Technical field
The present invention relates to a kind of technical field of mechanical driving device, especially a kind of single input with clutch function passes
Dynamic device is mainly used in the in-orbit manual-operated emergent transmission of large-scale spaceflight apparatus device.
Background technology
Due to the job specification of space equipment, space equipment, motion especially therein must be highly stable reliable；
For critical movements mechanism, redundancy can be used, drop volume etc. is designed to increase mechanism reliability.
For the motion with higher severity, it is considered as carrying out in-orbit maintenance work；When motion has exhibition
When opening characteristic and dismounting envelope is limited, in-orbit maintenance can not be carried out to failure mechanism.Therefore, it is necessary to which manual-operated emergent transmission dress is arranged
It sets, the motion of failure is reset in dismounting envelope, then failure mechanism is subjected to demolition and maintenance or replacement.Such case
Under, it is desirable that emergent transmission device has the ability of idle clutch and single input.
Invention content
The purpose of the present invention is to meet the demand, providing a kind of single input transmission device with clutch function,
It is simple and reliable for structure.
To achieve the goals above, the technical solution of transmission device provided by the invention includes：Input shaft, center roller,
Pressing friction disk, spring, output rotor and shell；The center roller is rubbed by center roller axis, intermediate friction disk and torsion pass
Disk composition is wiped, intermediate friction disk is individually fixed in the middle part and end of center roller axis with torsion pass frictional disk；The output turns
Son is made of output shaft and output frictional disk, and output frictional disk is fixed on the end of output shaft；Limit input shaft and output rotor
All degree of freedom in addition to axial rotation, all degree of freedom of the limitation center roller in addition to axial rotation is with axial movement；
Four helical interfaces, each helical interfaces length and helical angle are uniformly distributed between the input shaft and center roller axis
Equal, four helicoids are divided into two groups, and it is one group to be separated by 180 °, and one group of helical interfaces rotation direction is left-handed, another group of spiral
Contact surface rotation direction is dextrorotation, and lubricating grease is smeared between two groups of helical interfaces；The intermediate friction disk exists with pressing friction disk
Contact is remained under the action of spring force, while center roller axis and input shaft compression also being made to fit together；Device not work
When making, torsion pass frictional disk under the action of the spring, remains separation with output frictional disk.
The friction coefficient of the intermediate friction disk and pressing friction disk contact surface is being more than said spiral surface helix angle just
Cut value, to ensure that intermediate friction disk and pressing friction are sat with crossing two legs enough frictional force, input shaft rotation and center roller not yet with it is defeated
When going out rotor fitting, center roller is made to axially move rather than be rotated together with input shaft.
The friction coefficient of the torsion pass frictional disk and output frictional disk contact surface is being more than said spiral surface helix angle just
It cuts value to ensure torsion pass frictional disk and export after frictional disk is bonded, torque is effectively transferred to output rotor by center roller, is avoided
The skidding of torsion pass frictional disk and output frictional disk contact surface.
The torsion pass frictional disk and Separation of the output frictional disk when device does not work are long less than single helicoid
The product of degree and the sine value of helicoid helical angle, to ensure the rotation by input shaft, torsion pass frictional disk can be bonded defeated
Go out frictional disk.
Preferably, the pressing friction plate edge is provided with guide protrusions, matched with the axially directed slot of shell,
Limit pressing friction disk axial rotation.
Preferably, the shell uses split type structure, it is attached using positioning screw.
The beneficial effects of the invention are as follows：When on input shaft without enough torques, by the effect of spring, center roller with
Output rotor is effectively isolated, and the motion state of output rotor is not passed to input shaft；When there is enough torques on input shaft,
Helicoid between input shaft and center roller forces center roller to move axially, until center roller is pasted with output rotor
It closes, by the friction of the spiral surface and center roller and output rotor of input shaft and center roller, the torque of input shaft is passed
Pass output rotor.The demand for meeting the in-orbit manual-operated emergent transmission device of large-scale spaceflight apparatus device, have idle clutch with
The ability of single input.
Description of the drawings
Fig. 1 is the stereoscopic schematic diagram of the present invention.
Fig. 2 is the stereoscopic schematic diagram removed after upper half-shells and attachment screw.
Fig. 3 is the front view of the present invention and the full sectional view along A-A cuttings.
Fig. 4 is the stereoscopic schematic diagram of input shaft.
Fig. 5 is the configuration schematic diagram of input shaft and center roller axis.
In figure：1 is input shaft；2 be center roller axis；3 be intermediate friction disk；4 be pressing friction disk；5 be spring；6 are
Torsion pass frictional disk；7 be output frictional disk；8 be output shaft；9 be upper half-shells；10 be lower housing；11 be outside framework oil seal one；12
For round nut one；13 be two angular contact ball bearings one；14 be outside framework oil seal two；15 be three connecting keys；16 be outside framework oil seal
Three；17 be retainer ring；18 be NU type cylindrical bearings；19 be two angular contact ball bearings two；20 be round nut two；21 be outside framework oil seal
Four；22 be four positioning screws；23 be guide groove one；24 be guide groove two；25 be device mounting hole；26 be guide protrusions.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing 1-5, illustrates further the present invention.
As shown in Figs. 1-3, the embodiment of the present invention is by input shaft 1, center roller axis 2, intermediate friction disk 3, pressing friction disk
4, spring 5, torsion pass frictional disk 6 exports frictional disk 7, output shaft 8, upper half-shells 9, lower housing 10, outside framework oil seal one 1,1, circle
Nut 1, two angular contact ball bearings 1, outside framework oil seal 2 14, three connecting keys 15, outside framework oil seal 3 16, retainer ring 17,
NU types cylindrical bearing 18, two angular contact ball bearings 2 19, round nut 2 20, outside framework oil seal 4 21 and four positioning screws 22 fill
With composition.
As shown in Figure 1, the shell of device is assembled by upper half-shells 9, lower housing 10 and four positioning screws 22, under
Four device mounting holes 25 are arranged in half-shells 10.
As Figure 2-3, input shaft 1 is fixed in the axial direction by two angular contact ball bearings 2 19 and round nut 2 20
Inside the shell；Intermediate friction disk 3 is fixed on the middle part of center roller axis 2 by way of connecting key 15 plus interference, and torsion pass rubs
Wipe the end that disk 6 is fixed on center roller axis 2 by way of three connecting keys 15 plus interference；NU types cylindrical bearing 18 it is interior
Circle is fixed in by retainer ring 17 on center roller axis 2, and the outer ring of NU types cylindrical bearing 18 is fixed on shell, such peace
Dress mode makes 2 axial freedom of center roller axis decontrol；Spring 5 is installed between shell and pressing friction disk 4, by pressing friction
Disk 4 is pressed on intermediate friction disk 3, and the guide protrusions that two are separated by 180 ° on pressing friction disk 4 are (due to visual angle, only
See guide protrusions 26) it is respectively cooperating in guide groove 1 and guide groove 2 24, make pressing friction disk 4 that can only axially move；
Output frictional disk 7 is fixed on 8 end of output shaft by way of three connecting keys 15 plus interference, while output shaft 8 passes through two
Angular contact ball bearing 1 is fixed inside the shell in the axial direction with round nut 1；Outside framework oil seal 2 14 and outside framework oil seal 1
It is located at the interior outside of output end；Outside framework oil seal 3 16 is located at the interior outside of input terminal with outside framework oil seal 4 21.
As shown in Fig. 2,4,5, it is distributed between input shaft 1 and center roller axis 2 and is uniformly distributed four helical interfaces, often
A helical interfaces length L and helixangleβ are equal, and four helicoids are divided into two groups, and it is one group to be separated by 180 °；One group of spiral connects
Contacting surface rotation direction is left-handed, i.e. helicoid A and helicoid C；Another group of helical interfaces rotation direction is dextrorotation, i.e. helicoid B and spiral
Face D；Lubricating grease is smeared between two groups of helical interfaces.The helicoid length L designed in the embodiment of the present invention is 28mm, helical angle
β is 6 °, and spiral radius surface r is 27.5mm.
Operation principle：
When acting on the torque on input shaft 1 less than threshold value T, due to the effect of spring 5 and pressing friction disk 4, input
Axis 1 and center roller attonity；Torsion pass frictional disk 6 is detached with the output holding of frictional disk 7；The motion state of output rotor is not passed
It is delivered to center roller and input shaft 1.
Above-mentioned threshold value T=F*r*tan (β)；Wherein F is the pressure of spring.
F is set as 20N, therefore T=57.8Nmm in the embodiment of the present invention.
When acting on the torque on input shaft 1 more than threshold value T, center roller will axially move until torsion pass frictional disk
6 are bonded with output frictional disk 7.In order to realize above-mentioned function, the friction of intermediate friction disk 3 and the contact surface of pressing friction disk 4 because
It is plain to be more than μ1, to ensure that center roller axially moves rather than is axially rotated together with input shaft 1；Torsion pass friction simultaneously
Disk 6 and the Separation a of output frictional disk 7 must be less than b, to ensure to be bonded by the rotation of input shaft 1, torsion pass frictional disk
Upper output frictional disk.
Above-mentioned μ1=tan (β)；B=L*sin (β)；Wherein L is helicoid length.
By calculating, μ in the embodiment of the present invention1=0.105, b=2.94mm.
Limitation due to the NU types cylindrical bearing 18 that is used in the embodiment of the present invention to shaft orientation moving range, torsion pass frictional disk
6 are set as 1.5mm with the Separation a for exporting frictional disk 7, as shown in Figure 3；When using other without limiting factor arrangement
When, frictional disk 6, which is turned round, with the Separation for exporting frictional disk 7 is less than b.
After torsion pass frictional disk 6 is bonded with output frictional disk 7, pass through the spiral between input shaft 1 and center roller axis 2
Torque and rotation are passed to output rotor by the friction between type face and torsion pass frictional disk 6 and output frictional disk 7, input shaft 1.For
Avoiding torsion pass frictional disk 6, contact surface during torsion pass skids with output frictional disk 7, torsion pass frictional disk 6 and output frictional disk 7
The friction factor of contact surface must be more than above-mentioned μ1。
When device work finishes, and the torque acted on input shaft 1 is less than threshold value T, since pressing friction disk 4 acts on
The pressure of center roller, torsion pass frictional disk 6 starts slowly to detach with the contact surface of output frictional disk 7, until returning to initially-separate
Gap.
What the present invention did not elaborated partly belongs to techniques well known.
Claims (6)
1. a kind of single input transmission device with clutch function, it is characterised in that：The transmission device include input shaft, in
Between rotor, pressing friction disk, spring, output rotor and shell；The center roller by center roller axis, intermediate friction disk and
Torsion pass frictional disk forms, and intermediate friction disk is individually fixed in the middle part and end of center roller axis with torsion pass frictional disk；Described
Output rotor is made of output shaft and output frictional disk, and output frictional disk is fixed on the end of output shaft；Limit input shaft with it is defeated
Go out all degree of freedom of the rotor in addition to axial rotation, limitation center roller in addition to axial rotation is with axial movement it is all from
By spending；Be uniformly distributed four helical interfaces between the input shaft and center roller axis, each helical interfaces length and
Helical angle is equal, and four helicoids are divided into two groups, and it is one group to be separated by 180 °, one group of helical interfaces rotation direction be it is left-handed, it is another
Group helical interfaces rotation direction is dextrorotation, and lubricating grease is smeared between two groups of helical interfaces；The intermediate friction disk rubs with compression
It wipes disk and remains contact under spring force, while center roller axis and input shaft compression being made to fit together；Device
When not working, torsion pass frictional disk under the action of the spring, remains separation with output frictional disk.
2. a kind of single input transmission device with clutch function according to claim 1, it is characterised in that：In described
Between the friction coefficient of frictional disk and pressing friction disk contact surface be more than the tangent value of helicoid helical angle.
3. a kind of single input transmission device with clutch function according to claim 1, it is characterised in that：The biography
It turns round frictional disk and exports tangent value of the friction coefficient more than helicoid helical angle of frictional disk contact surface.
4. a kind of single input transmission device with clutch function according to claim 1, it is characterised in that：The biography
It turns round frictional disk and is less than single helical interfaces length and helicoid spiral shell with Separation of the frictional disk when device does not work is exported
The product of the sine value of swing angle.
5. a kind of single input transmission device with clutch function according to claim 1, it is characterised in that：The pressure
Friction-tight plate edge is provided with guide protrusions, is matched with the axially directed slot of shell, limits pressing friction disk axial rotation.
6. a kind of single input transmission device with clutch function according to claim 1, it is characterised in that：Described is outer
Shell uses split type structure, is attached using positioning screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710124114.0A CN106704409B (en) | 2017-03-03 | 2017-03-03 | A kind of single input transmission device with clutch function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710124114.0A CN106704409B (en) | 2017-03-03 | 2017-03-03 | A kind of single input transmission device with clutch function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106704409A CN106704409A (en) | 2017-05-24 |
| CN106704409B true CN106704409B (en) | 2018-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710124114.0A Active CN106704409B (en) | 2017-03-03 | 2017-03-03 | A kind of single input transmission device with clutch function |
Country Status (1)
| Country | Link |
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| CN (1) | CN106704409B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963465B (en) * | 2021-03-11 | 2022-04-26 | 山东科技大学 | Rod type clutch based on centrifugal force and working method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5131427B2 (en) * | 2006-12-07 | 2013-01-30 | 株式会社ジェイテクト | Driving force distribution device |
| CN201779238U (en) * | 2010-04-23 | 2011-03-30 | 张立井 | Novel speed reducer with torque limiting function |
| CN202659757U (en) * | 2012-07-28 | 2013-01-09 | 山东宏康机械制造有限公司 | Torque limiter for transmission shaft |
| CN103557244B (en) * | 2013-11-19 | 2016-02-24 | 无锡市凯旋电机有限公司 | A kind of engaging and disengaging gear with overload protection and adjustable ouput force |
| EP3087935B1 (en) * | 2015-04-17 | 2019-05-22 | Greatbatch Ltd. | Two stage torque limiter |
| CN106402199B (en) * | 2016-11-30 | 2018-06-08 | 常州工程职业技术学院 | A kind of automobile power transfer mechanism |
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- 2017-03-03 CN CN201710124114.0A patent/CN106704409B/en active Active
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| CN106704409A (en) | 2017-05-24 |
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