CN105782292A - Friction speed limiting device for preventing out-of-gear condition - Google Patents
Friction speed limiting device for preventing out-of-gear condition Download PDFInfo
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- CN105782292A CN105782292A CN201410819841.5A CN201410819841A CN105782292A CN 105782292 A CN105782292 A CN 105782292A CN 201410819841 A CN201410819841 A CN 201410819841A CN 105782292 A CN105782292 A CN 105782292A
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- teeth
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- engagement
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- spline
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Abstract
The invention discloses a friction speed limiting device for preventing an out-of-gear condition. The friction speed limiting device comprises a casing, wherein input shaft and a speed limiting shaft are arranged in the casing; a driving gear which synchronously rotates with the input shaft is arranged on the input shaft; a torque self-adaptive friction mechanism and a spline section are arranged on the speed limiting shaft; a gear sleeve and an engaging sleeve are arranged on the spline section in a sleeving manner; a driven gear is arranged on the gear sleeve in a sleeving manner; an engaging external spline is arranged on the driven gear; an engaging internal spline is arranged on the engaging sleeve; shifting fork grooves are also formed in the engaging sleeve; the torque self-adaptive friction mechanism comprises a roller weight disk which is fixedly arranged on the speed limiting shaft, a friction disk I which sleeves the speed limiting shaft and is in single-degree-of-freedom sliding fit with the speed limiting shaft and a friction disk II which is arranged correspondingly to the friction disk I; the friction disk I is positioned between the roller weight disk and the friction disk II; a roller weight arm component is arranged on the side face, facing the friction disk I, of the roller weight disk; all spline teeth of the engaging external spline are separately arranged into reverse tapered teeth I; and all internal spline teeth of the engaging internal spline are separately arranged into reverse tapered teeth II.
Description
Technical field
The present invention designs a kind of speed-limiting device, and concrete is a kind of friction speed-limiting device.
Background technology
Existing lace conveying device generally comprises transmission band, and the two ends of conveyer belt are sleeved on live-roller, utilizes actuating unit conveying to place material operating on a moving belt.But, some are delivered to for the device for transporting objects of lower from eminence, in order to obtain suitable transfer rate, actuating unit does not need only provide for the power of conveyer belt, and when weight of material is bigger, also need to overcome the action of gravity of material, increasingly faster to limit transmission band transfer rate under acceleration of gravity effect, cause substantial amounts of energy resource consumption and waste.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of anti-friction speed-limiting device out of supply, counter balance torque effect can not only be carried out according to the torque Automatic adjusument frictional force size received, and be prevented from out of supply.
For reaching above-mentioned purpose, the present invention provides following technical scheme:
A kind of anti-friction speed-limiting device out of supply, including housing, is provided with the power shaft being parallel to each other and speed limit axle in described housing；Described power shaft is provided with the driving gear of synchronous rotation, described speed limit axle is provided with moment of torsion adaptive friction mechanism, and described speed limit axle is additionally provided with spline segment, on described spline segment, set is equiped with tooth set and engaging sleeve, described tooth puts to be equiped with and rotates the driven gear coordinating and engaging with described driving gear, described driven gear is provided with engagement external splines, described engaging sleeve is provided with for hanging, with described mesh splines tooth, the engagement internal spline that shelves engage, described engaging sleeve is additionally provided with fork slot, the shifting fork mechanism coordinating and driving described engaging sleeve to move with described fork slot it is provided with along described speed limit axle in described housing；
Described moment of torsion adaptive friction mechanism includes the moving bead disk being fixedly mounted on described speed limit axle, the frictional disk I being sleeved on speed limit axle and be slidably matched with its single-degree-of-freedom and the frictional disk II being correspondingly arranged with frictional disk I, described frictional disk I is between described moving bead disk and frictional disk II, described moving bead disk is provided with the Puli's pearl arm component for driving frictional disk I to slide to described frictional disk II towards the side of described frictional disk I, described frictional disk II is sleeved on speed limit axle and fixedly mounts on the housing, and it is provided with, between described frictional disk I and frictional disk II, the rubbing surface cooperated；
All external spline teeth of described engagement external splines are disposed as teeth I, the direction that the width of described teeth I points to described engagement internal spline along described engagement external splines is gradually increased, and described teeth I is provided with, towards one end of described engagement internal spline, the arc envelope face I formed by circular arc chamfering, and seamlessly transit between described arc envelope face I with the two side of corresponding described teeth I；
All inner spline gears of described engagement internal spline are disposed as teeth II, the direction that the width of described teeth II points to described engagement external splines along described engagement internal spline is gradually increased, and described teeth II is provided with, towards one end of described engagement external splines, the arc envelope face II formed by circular arc chamfering, seamlessly transit between described arc envelope face II with the two side of corresponding described teeth II.
Further, described Puli's pearl arm component includes the uniform at least three Puli's pearl component being arranged on described moving bead disk of annular, being provided with mounting seat with described Puli's pearl component one_to_one corresponding on described moving bead disk, described Puli's pearl component is hingedly mounted in described mounting seat.
Further, described Puli's pearl component is hingedly mounted in described mounting seat away from the one end at described moving bead disk center.
Further, described frictional disk I is provided with, towards the side of described moving bead disk, the smooth surface coordinated with described Puli's pearl component.
Further, described teeth I is arranged axisymmetricly, falls in the plane of symmetry of described teeth I and angle between the dual-side in cross section that the plane parallel with the axis of described engagement external splines intercepts on corresponding described teeth I is 10 °.
Further, the external diameter in described arc envelope face I is gradually reduced in the radially outward direction of described engagement external splines；The Axisymmetric Distributed Line in described arc envelope face I is in the oblique line tilted relative to the axis of described engagement external splines, and the angle between the Axisymmetric Distributed Line in described arc envelope face I with the described axis engaging external splines is 70 °.
Further, described teeth II is arranged axisymmetricly, falls in the plane of symmetry of described teeth II and angle between the dual-side in cross section that the plane parallel with the axis of described engagement internal spline intercepts on corresponding described teeth II is 10 °.
Further, the external diameter in described arc envelope face II along described engagement internal spline radially inwardly on be gradually reduced；The Axisymmetric Distributed Line in described arc envelope face II is in the oblique line tilted relative to the axis of described engagement internal spline, and the angle between the Axisymmetric Distributed Line in described arc envelope face II with the described axis engaging internal spline is 70 °.
The beneficial effects of the present invention is:
The present invention prevents friction speed-limiting device out of supply, when power shaft is subject to moment of torsion effect rotation, driving gear drives driven gear to rotate, utilize shifting fork mechanism to drive engagement internal spline and engage external splines engagement, driven gear drives speed limit axle to rotate, and Puli's pearl arm component drives frictional disk I to move to frictional disk II, increases the frictional force between frictional disk I and frictional disk II, the rotating speed preventing speed limit axle is too fast, and then reacts to and realize the speed limit to power shaft on power shaft；Additionally, when moment of torsion one timing that power shaft is subject to, if the frictional force between frictional disk I and frictional disk II is too small, then the rotating speed of speed limit axle can increase, and then increase the frictional force between frictional disk I and frictional disk II, until the frictional force between frictional disk I and frictional disk II acts on the moment of torsion on speed limit axle just and the balance that is subject to of power shaft, the in stable condition of moment of torsion adaptive friction mechanism could be kept, namely moment of torsion one timing that power shaft is subject to, its rotating speed is also certain, it is possible to reach the purpose of speed limit；By the spline tooth of engagement external splines and engagement internal spline is disposed as teeth, and arc envelope face is set in one end of teeth, it is impossible to more smooth out when hanging shelves engagement, and it can be avoided that engagement external splines and engagement internal spline are out of supply after hanging shelves engagement.
Accompanying drawing explanation
In order to make the purpose of the present invention, technical scheme and beneficial effect clearly, the present invention provides drawings described below to illustrate:
Fig. 1 is the structural representation that the present invention prevents friction speed-limiting device embodiment out of supply；
Fig. 2 is the A detail drawing of Fig. 1；
Fig. 3 is the structural representation of driven gear；
Fig. 4 is the B-B profile of Fig. 3；
Fig. 5 is the structural representation of engaging sleeve；
Fig. 6 is the C-C profile of Fig. 5.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described, so that those skilled in the art can be better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As it is shown in figure 1, prevent the structural representation of friction speed-limiting device embodiment out of supply for the present invention.The present embodiment prevents friction speed-limiting device out of supply, including housing 1, is provided with the power shaft 2 and speed limit axle 3 that are parallel to each other in housing 1.Power shaft 2 is provided with the driving gear 4 of synchronous rotation, speed limit axle 3 is provided with moment of torsion adaptive friction mechanism, and speed limit axle 3 is additionally provided with spline segment, on spline segment, set is equiped with tooth set 5 and engaging sleeve 6, on tooth set 5, set is equiped with and rotates the driven gear 7 coordinating and engaging with driving gear 4, driven gear 7 is provided with engagement external splines 8, engaging sleeve 6 is provided with for hanging, with mesh splines tooth, the engagement internal spline 9 that shelves engage, engaging sleeve 6 is additionally provided with fork slot 10, the shifting fork mechanism coordinating and driving engaging sleeve 6 to move with fork slot 10 it is provided with along speed limit axle 3 in housing 1.
The moment of torsion adaptive friction mechanism of the present embodiment includes the moving bead disk 11 being fixedly mounted on speed limit axle, the frictional disk I 12 being sleeved on speed limit axle 3 and be slidably matched with its single-degree-of-freedom and the frictional disk II 13 being correspondingly arranged with frictional disk I 12, frictional disk I 12 is between moving bead disk 11 and frictional disk II 13, moving bead disk 11 is provided with the Puli's pearl arm component for driving frictional disk I 12 to slide to frictional disk II 13 towards the side of frictional disk I 12, frictional disk II 13 is sleeved on speed limit axle 3 and is fixedly mounted on housing 1, and between frictional disk I 12 and frictional disk II 13, it is provided with the rubbing surface cooperated.
Further, Puli's pearl arm component includes the uniform at least three Puli's pearl component 14 being arranged on moving bead disk 11 of annular, and moving bead disk 11 is provided with mounting seat 15 with Puli's pearl component 14 one_to_one corresponding, and Puli's pearl component 14 is hingedly mounted in mounting seat 15.Puli's pearl component 14 of the present embodiment is hingedly mounted in mounting seat 15 away from the one end at moving bead disk 11 center, and Puli's pearl component 14 is provided with roller 16 near the one end at moving bead disk 11 center, frictional disk I 12 is provided with, towards the side of moving bead disk 11, the smooth surface coordinated with Puli's pearl component 14, it is possible to effectively reduce resistance.
All external spline teeth of the engagement external splines 8 of the present embodiment are disposed as teeth I, the direction that the width of teeth I points to engagement internal spline 9 along engagement external splines 8 is gradually increased, and teeth I is provided with, towards the one end engaging internal spline 9, the arc envelope face I 17 formed by circular arc chamfering, and seamlessly transit between arc envelope face I 17 with the two side of corresponding teeth I.The teeth I of the present embodiment is arranged axisymmetricly, the angle α between the dual-side in the plane of symmetry falling in teeth I cross section intercepted on corresponding teeth I with the parallel plane of axis of engagement external splines 81It is 10 °.The external diameter in arc envelope face I 17 is gradually reduced in the radially outward direction of engagement external splines 8, the Axisymmetric Distributed Line in arc envelope face I 17 is in the oblique line tilted relative to the axis of engagement external splines, and the angle β between the Axisymmetric Distributed Line in arc envelope face I 17 and the axis engaging external splines1It it is 70 °.
All inner spline gears of the engagement internal spline 9 of the present embodiment are disposed as teeth II, the direction that the width of teeth II points to engagement external splines 8 along engagement internal spline 9 is gradually increased, and teeth II is provided with, towards the one end engaging external splines, the arc envelope face II 18 formed by circular arc chamfering, seamlessly transit between arc envelope face II 18 with the two side of corresponding teeth II.The teeth II of the present embodiment is arranged axisymmetricly, the angle α between the dual-side in the plane of symmetry falling in teeth II cross section intercepted on corresponding teeth II with the parallel plane of axis of engagement internal spline 92It is 10 °.The external diameter in the arc envelope face II 18 of the present embodiment along engagement internal spline radially inwardly on be gradually reduced；The Axisymmetric Distributed Line in arc envelope face II 18 is in the oblique line tilted relative to the axis of engagement internal spline, and the angle β between the Axisymmetric Distributed Line in arc envelope face II 18 and the axis engaging internal spline2It it is 70 °.
The present embodiment prevents friction speed-limiting device out of supply, when power shaft is subject to moment of torsion effect rotation, driving gear drives driven gear to rotate, utilize shifting fork mechanism to drive engagement internal spline and engage external splines engagement, driven gear drives speed limit axle to rotate, and Puli's pearl arm component drives frictional disk I to move to frictional disk II, increases the frictional force between frictional disk I and frictional disk II, the rotating speed preventing speed limit axle is too fast, and then reacts to and realize the speed limit to power shaft on power shaft；Additionally, when moment of torsion one timing that power shaft is subject to, if the frictional force between frictional disk I and frictional disk II is too small, then the rotating speed of speed limit axle can increase, and then increase the frictional force between frictional disk I and frictional disk II, until the frictional force between frictional disk I and frictional disk II acts on the moment of torsion on speed limit axle just and the balance that is subject to of power shaft, the in stable condition of moment of torsion adaptive friction mechanism could be kept, namely moment of torsion one timing that power shaft is subject to, its rotating speed is also certain, it is possible to reach the purpose of speed limit；By the spline tooth of engagement external splines and engagement internal spline is disposed as teeth, and arc envelope face is set in one end of teeth, it is impossible to more smooth out when hanging shelves engagement, and it can be avoided that engagement external splines and engagement internal spline are out of supply after hanging shelves engagement.
Embodiment described above is only the preferred embodiment lifted for absolutely proving the present invention, and protection scope of the present invention is not limited to this.Equivalent replacement that those skilled in the art make on basis of the present invention or conversion, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (8)
1. friction speed-limiting device one kind anti-out of supply, it is characterised in that: include housing, in described housing, be provided with the power shaft being parallel to each other and speed limit axle；Described power shaft is provided with the driving gear of synchronous rotation, described speed limit axle is provided with moment of torsion adaptive friction mechanism, and described speed limit axle is additionally provided with spline segment, on described spline segment, set is equiped with tooth set and engaging sleeve, described tooth puts to be equiped with and rotates the driven gear coordinating and engaging with described driving gear, described driven gear is provided with engagement external splines, described engaging sleeve is provided with for hanging, with described mesh splines tooth, the engagement internal spline that shelves engage, described engaging sleeve is additionally provided with fork slot, the shifting fork mechanism coordinating and driving described engaging sleeve to move with described fork slot it is provided with along described speed limit axle in described housing；
Described moment of torsion adaptive friction mechanism includes the moving bead disk being fixedly mounted on described speed limit axle, the frictional disk I being sleeved on speed limit axle and be slidably matched with its single-degree-of-freedom and the frictional disk II being correspondingly arranged with frictional disk I, described frictional disk I is between described moving bead disk and frictional disk II, described moving bead disk is provided with the Puli's pearl arm component for driving frictional disk I to slide to described frictional disk II towards the side of described frictional disk I, described frictional disk II is sleeved on speed limit axle and fixedly mounts on the housing, and it is provided with, between described frictional disk I and frictional disk II, the rubbing surface cooperated；
All external spline teeth of described engagement external splines are disposed as teeth I, the direction that the width of described teeth I points to described engagement internal spline along described engagement external splines is gradually increased, and described teeth I is provided with, towards one end of described engagement internal spline, the arc envelope face I formed by circular arc chamfering, and seamlessly transit between described arc envelope face I with the two side of corresponding described teeth I；
All inner spline gears of described engagement internal spline are disposed as teeth II, the direction that the width of described teeth II points to described engagement external splines along described engagement internal spline is gradually increased, and described teeth II is provided with, towards one end of described engagement external splines, the arc envelope face II formed by circular arc chamfering, seamlessly transit between described arc envelope face II with the two side of corresponding described teeth II.
2. friction speed-limiting device anti-out of supply according to claim 1, it is characterized in that: described Puli's pearl arm component includes the uniform at least three Puli's pearl component being arranged on described moving bead disk of annular, being provided with mounting seat with described Puli's pearl component one_to_one corresponding on described moving bead disk, described Puli's pearl component is hingedly mounted in described mounting seat.
3. friction speed-limiting device anti-out of supply according to claim 2, it is characterised in that: described Puli's pearl component is hingedly mounted in described mounting seat away from the one end at described moving bead disk center.
4. friction speed-limiting device anti-out of supply according to claim 2, it is characterised in that: described frictional disk I is provided with, towards the side of described moving bead disk, the smooth surface coordinated with described Puli's pearl component.
5. friction speed-limiting device anti-out of supply according to claim 1, it is characterized in that: described teeth I is arranged axisymmetricly, fall in the plane of symmetry of described teeth I and angle between the dual-side in cross section that the plane parallel with the axis of described engagement external splines intercepts on corresponding described teeth I is 10 °.
6. friction speed-limiting device anti-out of supply according to claim 5, it is characterised in that: the external diameter in described arc envelope face I is gradually reduced in the radially outward direction of described engagement external splines；The Axisymmetric Distributed Line in described arc envelope face I is in the oblique line tilted relative to the axis of described engagement external splines, and the angle between the Axisymmetric Distributed Line in described arc envelope face I with the described axis engaging external splines is 70 °.
7. friction speed-limiting device anti-out of supply according to claim 1, it is characterized in that: described teeth II is arranged axisymmetricly, fall in the plane of symmetry of described teeth II and angle between the dual-side in cross section that the plane parallel with the axis of described engagement internal spline intercepts on corresponding described teeth II is 10 °.
8. anti-friction speed-limiting device out of supply according to claim 7, it is characterised in that: the external diameter in described arc envelope face II along described engagement internal spline radially inwardly on be gradually reduced；The Axisymmetric Distributed Line in described arc envelope face II is in the oblique line tilted relative to the axis of described engagement internal spline, and the angle between the Axisymmetric Distributed Line in described arc envelope face II with the described axis engaging internal spline is 70 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819841.5A CN105782292A (en) | 2014-12-25 | 2014-12-25 | Friction speed limiting device for preventing out-of-gear condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819841.5A CN105782292A (en) | 2014-12-25 | 2014-12-25 | Friction speed limiting device for preventing out-of-gear condition |
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| Publication Number | Publication Date |
|---|---|
| CN105782292A true CN105782292A (en) | 2016-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410819841.5A Pending CN105782292A (en) | 2014-12-25 | 2014-12-25 | Friction speed limiting device for preventing out-of-gear condition |
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| Country | Link |
|---|---|
| CN (1) | CN105782292A (en) |
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- 2014-12-25 CN CN201410819841.5A patent/CN105782292A/en active Pending
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Application publication date: 20160720 |