CN105351390A - Unidirectional constant-torque transmission structure - Google Patents
Unidirectional constant-torque transmission structure Download PDFInfo
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- CN105351390A CN105351390A CN201510845973.XA CN201510845973A CN105351390A CN 105351390 A CN105351390 A CN 105351390A CN 201510845973 A CN201510845973 A CN 201510845973A CN 105351390 A CN105351390 A CN 105351390A
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- pressure ring
- ring
- unidirectional constant
- drive mechanism
- gearwheel
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Abstract
The invention provides a unidirectional constant-torque transmission structure. According to the unidirectional constant-torque transmission structure, a friction clutch device is installed on a power output shaft of a drive wheel and locked; a large gear and a press ring of the friction clutch device are both installed on the power output shaft of the drive wheel, and the press ring is driven by the drive wheel to rotate; a wave washer and an anti-rotating ring are installed in an installation groove of the large gear, and the wave surface of the anti-rotating ring is placed towards the direction of the press ring; set screws are arranged in thread holes of the press ring, the bottom end of each set screw contacts with the wave surface of the anti-rotating ring, and ejector pin assemblies corresponding to spiral grooves of the large gear are further arranged in blind holes of the press ring. According to the invention, a friction force is formed on the large gear through adjusting the set screws to push the anti-rotating ring to compact the wave washer, and because the large gear and the press ring have a relative rotation capacity therebetween, the friction clutch device is adjusted to play a role of constant-torque output at this moment; and when a loading torque is greater than a set friction torque, the friction clutch device slips to protect a drive motor.
Description
Technical field
This technology relates to a kind of unidirectional constant moment drive mechanism, is mainly used in certain unmanned plane start up system.
Background technique
Vehicle-mountedly require that the main shaft of start up system can dock smoothly with unmanned vehicle engine interface; when main shaft and unmanned plane interface is not to when connecting; output loading can sharply increase or directly make telescopic drive motor be in locked rotor condition; in order to avoid heavy load or stall damage main shaft telescope motor and the unmanned vehicle engine interface of start up system; main shaft extending means should have self-protection function; simultaneously when main shaft rotates to docking location smooth in unmanned plane interface, again can quick-recovery transmission of power soon.After unmanned vehicle engine starts smoothly, main shaft extending means can regain main shaft with all strength.Main shaft extending means is sequential working in whole start-up course, and it is the important step of main shaft extending means mechanical sequential work that unidirectional constant moment exports, and is the important component part of start up system main shaft extending means, is also still an open question.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of unidirectional constant moment drive mechanism, the unidirectional constant moment transmission of this unidirectional constant moment drive mechanism by adopting friction clutch and spiral chute and straight pin composite structure to realize power, solving power can not the problem of unidirectional constant moment transmission.
The present invention is achieved by the following technical programs.
The unidirectional constant moment drive mechanism of one provided by the invention, comprise nut B, driving wheel and friction engaging and disengaging gear, friction engaging and disengaging gear is arranged on the pto＝power take-off of driving wheel, and is locked by nut B; Gearwheel and the pressure ring of described friction engaging and disengaging gear are installed on the pto＝power take-off of driving wheel, and pressure ring is by driving wheel driven rotary; Wave washer and spline ring are installed in the mounting groove of gearwheel, and the wavy surface of spline ring is placed towards pressure ring direction; Be provided with Cock screw in the tapped hole of pressure ring, and the bottom of Cock screw contacts with the wavy surface of spline ring, in the blind hole of pressure ring, be also provided with the ejector pin component corresponding with the spiral chute of gearwheel; The spiral chute degree of depth on described gearwheel gradually changes.
Described Cock screw is also provided with nut A.
Also lock washer is provided with between described pressure ring and nut B.
The number of the tapped hole on described pressure ring is 3 ~ 6, and is circumferentially being uniformly distributed.
The number of the blind hole on described pressure ring is 3 ~ 6, and is circumferentially being uniformly distributed.
The decrement of described wave washer is adjustable.
Beneficial effect of the present invention is: promote spline ring compression wave washer by adjustment Cock screw and form frictional force on gearwheel, owing to having ability in relative rotation between gearwheel and pressure ring, the effect determined moment and export is played in now friction engaging and disengaging gear adjustment, when loading moment is greater than this setting friction torque, friction engaging and disengaging gear skids, protection drive motor, also ensures to damage unmanned vehicle engine interface simultaneously; Spiral chute and straight pin composite structure form pin and drag gear-driven power delivery mode, and its carry-over moment is much larger than friction torque, and for full moment exports, thus drive main spindle forces to regain, and solves the problem that the unidirectional constant moment of power is transmitted.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the sectional drawing of Fig. 1 along A-A;
The structural representation of pressure ring in Fig. 3 Fig. 1;
Fig. 4 is the right elevation of Fig. 3;
Fig. 5 is the left view of Fig. 3;
Fig. 6 is the structural representation of gearwheel in Fig. 1;
Fig. 7 is the plan view of Fig. 6;
Fig. 8 is the structural representation that Fig. 1 stops change;
Fig. 9 is the plan view of Fig. 8;
Figure 10 is the structural representation of wave washer in Fig. 1;
Figure 11 is the plan view of Figure 10;
In figure: 1-gearwheel, 101-spiral chute, 102-mounting groove, 2-pressure ring, 201-tapped hole, 202-blind hole, 3-nut A, 4-lock washer, 5-nut B, 6-driving wheel, 7-wave washer, 8-spline ring, 9-Cock screw, 10-ejector pin component, 11-packing ring.
Embodiment
Further describe technological scheme of the present invention below, but described in claimed scope is not limited to.
The unidirectional constant moment drive mechanism of one as shown in Fig. 1 ~ 11, comprise nut B5, driving wheel 6 and friction engaging and disengaging gear, friction engaging and disengaging gear is arranged on the pto＝power take-off of driving wheel 6, and is locked by nut B5; Gearwheel 1 and the pressure ring 2 of described friction engaging and disengaging gear are installed on the pto＝power take-off of driving wheel 6, and pressure ring 2 is by driving wheel 6 driven rotary; Wave washer 7 and spline ring 8 are installed in the mounting groove 102 of gearwheel 1, and the wavy surface of spline ring 8 is placed towards pressure ring 2 direction; Be provided with Cock screw 9 in the tapped hole 201 of pressure ring 2, and the bottom of Cock screw 9 contacts with the wavy surface of spline ring 8, in the blind hole 202 of pressure ring 2, be also provided with the ejector pin component 10 corresponding with the spiral chute 101 of gearwheel 1; Spiral chute 101 degree of depth on described gearwheel 1 gradually changes.
Scabble face by cylinder between driving wheel 6 with pressure ring 2 or key is connected (this example scabble face for cylinder), and carry out transmission of power by it.Gearwheel 1, wave washer 7, spline ring 8 are arranged on by nut B5 on the axle of driving wheel 6, in order to prevent nut B5 from getting loose in vibration environment, use lock washer 4 to carry out locking.Pressure ring 2 is designed with three tapped holes 201 and three blind holes 202.The frictional force that three tapped holes 201 can adjust as required suitably increases, but need circumference uniform distribution for installing pretension Cock screw 9, the frictional force that three blind holes 202 can adjust as required suitably increases, but needs to lay ejector pin component 10 in circumference uniform distribution.Promote spline ring 8 by adjustment Cock screw 9 to compress wave washer 7 form frictional force on gearwheel 1.This frictional force size can be adjusted by the decrement of control waveform packing ring 7, forms friction engaging and disengaging gear.Carry out pretension by nut A3 after frictional force has adjusted locking, to prevent Cock screw 9 from loosening, cause change in friction force.
Pressure ring 2 installs ejector pin component 10 in three blind holes 202, and this ejector pin component 10 is made up of thimble and helical spring, and the radial position size of blind hole 202 is consistent with the spiral chute 101 on gearwheel.
The present invention is in practical work process, from driving wheel end, when main shaft extending means drive main spindle is stretched out: pressure ring 2 rotates clockwise, gearwheel 1 rotates counterclockwise because load act as, spiral chute 101 on gearwheel 1 is left-handed, in running spiral chute 101 by dark to shallow change, smooth rising, gearwheel 1 spiral chute 101 bottom surface is made to promote ejector pin component 10, thimble Compress Spring in ejector pin component 10, make in the blind hole 202 on ejector pin component 10 retraction stage clip, gearwheel 1 and pressure ring 2 have ability in relative rotation, the effect determined moment and export is played in now friction engaging and disengaging gear adjustment, when loading moment is greater than this setting friction torque, friction engaging and disengaging gear skids, protection drive motor, also ensure to damage unmanned vehicle engine interface simultaneously.When main shaft extending means drive main spindle is regained: pressure ring 2 runs counterclockwise, gearwheel 1 is suitable indicators turn because load act as, spiral chute 101 on gearwheel 1 is left-handed, in running spiral chute 101 by shallow to dark change, gearwheel 1 is made to unclamp round end thimble pull-off spring in circumferentially certain angular range inner spiral groove 101 bottom surface, ejector pin component 10 upper spring promotes thimble and embeds spiral chute 101 depths, spiral chute 101 bosom is cylndrical surface, right angle, a thimble part coordinates with the accurate blind hole 202 on pressure ring, and another part coordinates with the cylndrical surface, right angle of gearwheel, formation pin connects, thus drag gear-driven power delivery mode.Its carry-over moment is much larger than friction torque, and for full moment exports, thus drive main spindle forces to regain.
Claims (7)
1. a unidirectional constant moment drive mechanism, comprise nut B (5), driving wheel (6) and friction engaging and disengaging gear, friction engaging and disengaging gear is arranged on the pto＝power take-off of driving wheel (6), and by nut B (5) locking, it is characterized in that: gearwheel (1) and the pressure ring (2) of described friction engaging and disengaging gear are installed on the pto＝power take-off of driving wheel (6), and pressure ring (2) is by driving wheel (6) driven rotary; Wave washer (7) and spline ring (8) are installed in the mounting groove (102) of gearwheel (1), and the wavy surface of spline ring (8) is placed towards pressure ring (2) direction; Cock screw (9) is provided with in the tapped hole (201) of pressure ring (2), and the bottom of Cock screw (9) contacts with the wavy surface of spline ring (8), in the blind hole (202) of pressure ring (2), be also provided with the ejector pin component (10) corresponding with the spiral chute of gearwheel (1) (101); Spiral chute (101) degree of depth on described gearwheel (1) gradually changes.
2. unidirectional constant moment drive mechanism as claimed in claim 1, is characterized in that: described Cock screw (9) is also provided with nut A (3).
3. unidirectional constant moment drive mechanism as claimed in claim 1, is characterized in that: be also provided with lock washer (4) between described pressure ring (2) and nut B (5).
4., as the unidirectional constant moment drive mechanism as described in arbitrary in claims 1 to 3, it is characterized in that: the number of the tapped hole (201) on described pressure ring (2) is 3 ~ 6, and is circumferentially being uniformly distributed.
5., as the unidirectional constant moment drive mechanism as described in arbitrary in claims 1 to 3, it is characterized in that: the number of the blind hole (202) on described pressure ring (2) is 3 ~ 6, and is circumferentially being uniformly distributed.
6., as the unidirectional constant moment drive mechanism as described in arbitrary in claims 1 to 3, it is characterized in that: the decrement of described wave washer (7) is adjustable.
7. as the unidirectional constant moment drive mechanism as described in arbitrary in claims 1 to 3, it is characterized in that: scabble face by cylinder between described driving wheel (6) with pressure ring (2) or key is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510845973.XA CN105351390B (en) | 2015-11-28 | 2015-11-28 | A kind of unidirectional constant moment drive mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510845973.XA CN105351390B (en) | 2015-11-28 | 2015-11-28 | A kind of unidirectional constant moment drive mechanism |
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| Publication Number | Publication Date |
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| CN105351390A true CN105351390A (en) | 2016-02-24 |
| CN105351390B CN105351390B (en) | 2017-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510845973.XA Active CN105351390B (en) | 2015-11-28 | 2015-11-28 | A kind of unidirectional constant moment drive mechanism |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654419A (en) * | 2017-10-30 | 2018-02-02 | 珠海格力电器股份有限公司 | Adjustable diffuser type and centrifugal compressor |
| CN109533294A (en) * | 2018-11-15 | 2019-03-29 | 中国直升机设计研究所 | A kind of rocker arrangement with adjustable frictional force |
| CN110186066A (en) * | 2019-06-26 | 2019-08-30 | 国电龙源节能技术有限公司 | Boiler secondary air is precisely blown anti-clamping stagnation air door |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4760904A (en) * | 1987-02-11 | 1988-08-02 | The Clorox Company | One-way torque limiter |
| US4898265A (en) * | 1988-01-27 | 1990-02-06 | Sundstrand Corporation | Torque limiter |
| CN101328928A (en) * | 2007-06-22 | 2008-12-24 | 上海宝松重型机械工程有限公司 | Locking nut and torque limitation machine |
| CN202431789U (en) * | 2011-12-30 | 2012-09-12 | 三多乐精密注塑(深圳)有限公司 | Conical friction type torque limiter |
| CN104895954A (en) * | 2014-03-07 | 2015-09-09 | 瑞班有限公司 | Torque-limiting return stop device |
-
2015
- 2015-11-28 CN CN201510845973.XA patent/CN105351390B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4760904A (en) * | 1987-02-11 | 1988-08-02 | The Clorox Company | One-way torque limiter |
| US4898265A (en) * | 1988-01-27 | 1990-02-06 | Sundstrand Corporation | Torque limiter |
| CN101328928A (en) * | 2007-06-22 | 2008-12-24 | 上海宝松重型机械工程有限公司 | Locking nut and torque limitation machine |
| CN202431789U (en) * | 2011-12-30 | 2012-09-12 | 三多乐精密注塑(深圳)有限公司 | Conical friction type torque limiter |
| CN104895954A (en) * | 2014-03-07 | 2015-09-09 | 瑞班有限公司 | Torque-limiting return stop device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654419A (en) * | 2017-10-30 | 2018-02-02 | 珠海格力电器股份有限公司 | Adjustable diffuser type and centrifugal compressor |
| CN109533294A (en) * | 2018-11-15 | 2019-03-29 | 中国直升机设计研究所 | A kind of rocker arrangement with adjustable frictional force |
| CN110186066A (en) * | 2019-06-26 | 2019-08-30 | 国电龙源节能技术有限公司 | Boiler secondary air is precisely blown anti-clamping stagnation air door |
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| Publication number | Publication date |
|---|---|
| CN105351390B (en) | 2017-10-24 |
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