CN201554794U - Roller-type centrifugal clutch - Google Patents
Roller-type centrifugal clutch Download PDFInfo
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- CN201554794U CN201554794U CN2009200246612U CN200920024661U CN201554794U CN 201554794 U CN201554794 U CN 201554794U CN 2009200246612 U CN2009200246612 U CN 2009200246612U CN 200920024661 U CN200920024661 U CN 200920024661U CN 201554794 U CN201554794 U CN 201554794U
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Abstract
The utility model provides a roller-type centrifugal clutch, which belongs to the field of mechanical soft start. The centrifugal clutch is provided with a centrifugal mechanical clutch mechanism, and is characterized in that a middle centrifugal block in the centrifugal mechanical clutch mechanism adopts a cylindrical or circular ring-shaped structure, the length of which corresponds to that of a roller (2), the middle centrifugal block (4) is mounted on one side of a stepped through groove formed on a main centrifugal block (6) in the axial direction, which is close to an outer ring (3), and a magnet (5) is fixedly mounted on one side of the stepped through groove formed on the main centrifugal block (6) in the axial direction, which is close to the center of a circle.
Description
One, technical field
The utility model is a kind of roller-type centrifugal clutch that belongs to mechanical soft start field.
Two, background technique
We know that in mechanical field, the machinery especially soft start of heavy mechanical equipment is a very important problem.Under the situation of soft start that is only limited to machinery and overload protection, measure relatively more commonly used at present is to adopt load limiting type of constant filling fluid coupling to finish this work.Fluid coupling has following function: a in general, has the automatic adaptive functions of flexible transmission; b, have to slow down and impact and isolate the torsional oscillation function; c, has the motor of making light start function; and the maximum moment starting duty that can utilize motor improves the starting performance of motor; d, the transmission of coordination multimachine; the uniformly distributed load function, has electricity-saving function at e, f, has overload protection function etc.Thus, fluid coupling has played important effect at present in mechanical field.
But we know that also fluid coupling also has some shortcomings that can't overcome, and for example: working efficiency is relatively low, are generally about 96%, and being lost on the main equipment of this power is just apparent in view.For another example: for some special industries, as colliery etc., be in safe reason, can only use the fluid coupling of aqueous medium, and the fluid coupling of aqueous medium is because the working medium that adopts is a water, reveal so be easy to produce, thereby be easy to cause other component (as bearing, oil sealing etc.) premature damage, so working life is relatively low, needs frequent maintenance or replacing, like this, just a lot of troubles and loss have been caused to enterprise.This problem has become the difficult problem of a professional at present to a certain extent.
At present, it is 200820027889.2 that a kind of number of patent application is arranged, name of patent application is that the Patent project of centrifugal mechanically controlled clutch can solve the above problems to a certain extent preferably, but when specific design, for example should adopt the structure of rolling friction pair during the design of the friction pair between centrifugal at roller and middle part as far as possible, generally be directly columniform shape to be made at centrifugal of middle part during specific design, and make the less shaft part of a bit of diameter at the middle part of its cylindrical, be used for hanging the middle part spring mechanism, during work since its middle part linear velocity relatively low, and elastic force is also less relatively, therefore the frictional heat of mechanism's generation is very little, so can receive satisfied effect, for large-scale product, because the centrifugal block of roller and middle part is long-pending relatively large, so generally can handle this problem on the minor diameter shaft part at centrifugal middle part, middle part, equally also can receive satisfied effect by the method on the upper end of spring mechanism in the middle part of link of being made by tin bronze of extension hangs over link more earlier.But, in concrete design process, also found to also have some can substitute basically such scheme on specific performance in addition be better than the scheme of improvement of the technical scheme type, so, proposition also is necessary to the improvement of the technical scheme technological scheme.
Three, model utility content
The purpose of this utility model is on the basis of the technological scheme of above-mentioned patent application, and the friction pair in a kind of mechanism of proposition between centrifugal of roller and the middle part adopts the principle technological scheme of follow-on roller-type centrifugal clutch in the working life that can improve mechanism to a certain extent of rolling friction pair fully or basically.
The utility model is to realize like this, has centrifugal mechanically controlled clutch mechanism in the mechanism, it is characterized in that: the middle part spring mechanism in the centrifugal mechanically controlled clutch mechanism is removed, and length cylindrical body or the cirque body structure corresponding with roller 2 length adopted at centrifugal 4 at middle part, and at the middle part of adopting cylindrical body or cirque body structure centrifugal 4 radially in the certain limit of star-wheel 1 rotating speed, can under magnetic force, overcome centrifugal force centrifugal 4 at middle part is pulled to magnet 5 with the position of roller 2 disengagings near fixedly being equipped with in the groove that is shaped on centrifugal 6 of the master of the side in the center of circle.
The groove of the middle part wherein is housed centrifugal 4 and the magnet 5 that is shaped at main centrifugal 6 middle part at the middle part centrifugal 4 with magnet 5 between the position, can make the protruding limit structure that can make centrifugal 4 at middle part can direct collision near magnet 5 time not arrive magnet 5.
Also can adopt following mechanism, be to have centrifugal mechanically controlled clutch mechanism in the mechanism, it is characterized in that: adopt on the star-wheel 1 entity part of the carrying roller 2 at the star-wheel working surface place corresponding can be with can substituting of being separately made when centrifugal mechanically controlled clutch mechanism along centrifugal 6 of the master that star-wheel 1 is radially done constrained radial motion with roller 2, between an end and star-wheel 1 in main centrifugal 6 close star-wheel 1 center of circle, it is can be with the main centrifugal 6 main spring mechanism 7 of top on roller 2 directions that its operative orientation also can be installed, centrifugal 4 at middle part can be fixed on the lower end of middle part on centrifugal 4 by its upper end and be fixed on middle part spring mechanism 5 on the star-wheel 1 and give tension on main centrifugal 6 during the technological scheme in the corresponding groove of making, can will adopt centrifugal 4 at the middle part of rectangular configuration and middle part spring mechanism 5 is radially whole moves a distance to position, the center of circle, and on the plane of centrifugal 4 upper end, middle part, recombinant is installed length middle part with cylindrical or cirque structure corresponding with roller 2 length centrifugal 8.
When adopting above-mentioned first technological scheme, when both adopting the technological scheme of magnet 5 in the mechanism, during concrete work, motor is connected with star-wheel 1, outer shroud 3 is connected with load, when motor start-up, because centrifugal 4 at middle part radially is pulled on the position away from roller 2 the effect lower edge of magnet 5 attraction forces mechanism, so, according to the basic functional principle of roller-type overrunning clutch as can be known, at this moment roller 2 can't wedging, be under idle state, so motor drives star-wheel 1 is to be in a kind of state near No Load Start to start down basically, when the rotating speed of motor acquires a certain degree, general when 80% left and right sides of its rated speed, the output torque of motor has reached maximum value, raising along with rotating speed, at this moment, the centrifugal force that produces on centrifugal 4 at the middle part is also in progressively increase, so at this moment its centrifugal force has overcome the effect of magnet 5 attraction forces, radially to roller 2 motions, and roller 2 held out against on the working position, make roller 2 enter the wedging state, as can be seen, under the condition that roller 2 rotates, at this moment be to be under a kind of rolling friction state of higher pair between centrifugal 4 at roller 2 and the middle part, so frictional heat is very little comparatively speaking, this point is very favourable.At this moment, motor will drive star-wheel 1 and compress by being installed in centrifugal 6 of master on the star-wheel 1 and main spring mechanism 7 that roller 2 drives outer shrouds 3 by roller 2 and load begins to rotate, thereby reach the purpose of soft start.
When adopting above-mentioned second technological scheme, when both having adopted the technological scheme at centrifugal 8 at middle part in the mechanism, during concrete work, motor is connected with star-wheel 1, outer shroud 3 is connected with load, when motor start-up, because being in centrifugal 4 at the middle part of lower end can't be along the radial motion of mechanism under the effect of middle part spring mechanism 5, and be in centrifugal 8 at the middle part of upper end because the quality of self compares less, even so can produce certain centrifugal force, but also can't roller 2 be held out against on the working position overcoming the centrifugal force that roller 2 self produces, so, according to the basic functional principle of roller-type overrunning clutch as can be known, at this moment roller 2 can't wedging, be under idle state, so motor drives star-wheel 1 is to be in a kind of state near No Load Start to start down basically, when the rotating speed of motor acquires a certain degree, general when 80% left and right sides of its rated speed, the output torque of motor has reached maximum value, raising along with rotating speed, at this moment, be in the centrifugal force that produces on centrifugal 4 at the middle part of lower end also in progressively increase, so at this moment its centrifugal force has overcome the effect of the pulling force of middle part spring mechanism 5, radially to roller 2 motions, form with joint efforts with centrifugal 8 centrifugal force that produces in the middle part that is in the upper end, and roller 2 held out against on the working position, make roller 2 enter the wedging state, as can be seen, under the condition that roller 2 rotates, at this moment roller 2 and to be between centrifugal 8 at the middle part of upper end be to be under a kind of rolling friction state of higher pair, and centrifugal 8 at the middle part that is in the upper end and centrifugal 4 at the middle part that is in the lower end are to be in the Frotteurism that a kind of line contacts, because the centrifugal force of the two generation is very little with respect to roller 2 and for the positive pressure between leading centrifugal 6, so the frictional heat of the two generation also is very little comparatively speaking, basically can ignore, this point is very favourable.At this moment, motor will drive star-wheel 1 and compress by being installed in centrifugal 6 of master on the star-wheel 1 and main spring mechanism 7 that roller 2 drives outer shrouds 3 by roller 2 and load begins to rotate, thereby reach the purpose of soft start.
Since the utility model on keeping the basis of former technological scheme advantage in its mechanism the friction pair between centrifugal of roller and the middle part adopted rolling friction pair fully or basically, reduced the frictional heat in the system to a certain extent, therefore improved the working life of mechanism to a certain extent, so, implement the back expectation and can receive more positive effect.
Four, description of drawings
The utility model has 4 accompanying drawings, mechanism was in the basic principle schematic under the disengaged condition when Fig. 1 was roller-type centrifugal clutch employing first party technology case, Fig. 2 be roller-type centrifugal clutch when adopting first technological scheme mechanism be in basic principle schematic under the jointing state, Fig. 3 be roller-type centrifugal clutch when adopting second technological scheme mechanism be in basic principle schematic under the jointing state, Fig. 4 be roller-type centrifugal clutch when adopting second technological scheme mechanism be in basic principle schematic under the disengaged condition.
In Fig. 1 Fig. 2: 1, star-wheel, 2, roller, 3, outer shroud, 4, centrifugal of middle part, 5, magnet, 6, main centrifugal, 7, main spring mechanism.
In Fig. 3 Fig. 4: 1, star-wheel, 2, roller, 3, outer shroud, 4, centrifugal of middle part, 5, the middle part spring mechanism, 6, main centrifugal, 7, main spring mechanism, 8, centrifugal of middle part.
Five, embodiment
Below, in conjunction with Figure of description, the utility model is described in further detail.
In Fig. 1, mechanism shown in Figure 2, has centrifugal mechanically controlled clutch mechanism, it is characterized in that: the middle part spring mechanism in the centrifugal mechanically controlled clutch mechanism is removed, and length cylindrical body or the cirque body structure corresponding with roller 2 length adopted at centrifugal 4 at middle part, and at the middle part of adopting cylindrical body or cirque body structure centrifugal 4 radially in the certain limit of star-wheel 1 rotating speed, can under magnetic force, overcome centrifugal force centrifugal 4 at middle part is pulled to magnet 5 with the position of roller 2 disengagings near fixedly being equipped with in the groove that is shaped on centrifugal 6 of the master of the side in the center of circle.When specific design, solid cylindrical structure should be adopted in centrifugal 4 at middle part as far as possible, can increase its rigidity like this, but sometimes in order to reduce centrifugal 4 the weight in middle part, make it when system start-up, be unlikely to too early roller 2 is held out against on the working position, also can adopt the hollow cylinder of ring.
The groove of the middle part wherein is housed centrifugal 4 and the magnet 5 that is shaped at main centrifugal 6 middle part at the middle part centrifugal 4 with magnet 5 between the position, can make the protruding limit structure that can make centrifugal 4 at middle part can direct collision near magnet 5 time not arrive magnet 5.As can be seen; because the restriction of mechanism's relief structure; so the magnet 5 that is contained in the groove that is shaped in main centrifugal 6 is non-contact with centrifugal 4 at middle part all the time; just can not crash magnet 5 when centrifugal of middle part resets under magnet 5 effects when quitting work in mechanism like this, therefore play the effect of protection magnet 5.During specific design, its structural type can be diversified, can reach centrifugal of magnet 5 and middle part have not directly been contacted as long as its objective is.Because roller 2 approaches pure rolling friction basically with centrifugal 4 at middle part, so its heating value is relatively very little, so the working life of mechanism also can be longer relatively.
During concrete work, motor is connected with star-wheel 1, outer shroud 3 is connected with load, when motor start-up, because centrifugal 4 at middle part radially is pulled on the position away from roller 2 the effect lower edge of magnet 5 attraction forces mechanism, so, according to the basic functional principle of roller-type overrunning clutch as can be known, at this moment roller 2 can't wedging, be under idle state, so motor drives star-wheel 1 is to be in a kind of state near No Load Start to start down basically, when the rotating speed of motor acquires a certain degree, general when the 70%-80% left and right sides of its rated speed, the output torque of motor has reached maximum value, raising along with rotating speed, at this moment, the centrifugal force that produces on centrifugal 4 at the middle part is also in progressively increase, so at this moment its centrifugal force has overcome the effect of magnet 5 attraction forces, hold out against on the working position radially to roller 2 motions, and roller 2, make roller 2 enter the wedging state, as can be seen, under the condition that roller 2 rotates, at this moment be to be under a kind of rolling friction state of higher pair between centrifugal 4 at roller 2 and the middle part, so frictional heat is very little comparatively speaking, this point is very favourable.At this moment, motor will drive star-wheel 1 and compress by being installed in centrifugal 6 of master on the star-wheel 1 and main spring mechanism 7 that roller 2 drives outer shrouds 3 by roller 2 and load begins to rotate, thereby reach the purpose of soft start.
At Fig. 3, can see among Fig. 4, also can adopt following mechanism, be to have centrifugal mechanically controlled clutch mechanism in the mechanism, it is characterized in that: adopt on the star-wheel 1 entity part of the carrying roller 2 at the star-wheel working surface place corresponding can be with can substituting of being separately made when centrifugal mechanically controlled clutch mechanism along centrifugal 6 of the master that star-wheel 1 is radially done constrained radial motion with roller 2, between an end and star-wheel 1 in main centrifugal 6 close star-wheel 1 center of circle, it is can be with the main centrifugal 6 main spring mechanism 7 of top on roller 2 directions that its operative orientation also can be installed, centrifugal 4 at middle part can be fixed on the lower end of middle part on centrifugal 4 by its upper end and be fixed on middle part spring mechanism 5 on the star-wheel 1 and give tension on main centrifugal 6 during the technological scheme in the corresponding groove of making, can will adopt centrifugal 4 at the middle part of rectangular configuration and middle part spring mechanism 5 is radially whole moves a distance to position, the center of circle, and on the plane of centrifugal 4 upper end, middle part, recombinant is installed length middle part with cylindrical or cirque structure corresponding with roller 2 length centrifugal 8.As can be seen, this technological scheme be centrifugal be to propose on the technological scheme basis of mechanical clutch, so this technological scheme and centrifugal be that the technological scheme of mechanical clutch is roughly the same, its effect also is more or less the same, but at concrete manufacture view, this technological scheme is eaily sometimes, and, because the contact position that centrifugal 4 at middle part and middle part are centrifugal 8 belongs to line and contacts, so from the principle of rolling friction as can be seen, under desirable rolling friction condition, this way of contact is can not produce mechanical energy to transform to heat energy, certainly, and when concrete work, always certain dissipation work that will have more or less discharges in the mode of heat energy, but is very little comparatively speaking.In addition, because roller 2 approaches pure rolling friction basically with centrifugal 8 at middle part, so its heating value is relatively very little, so also be relatively long the working life of mechanism.
During concrete work, motor is connected with star-wheel 1, outer shroud 3 is connected with load, when motor start-up, because being in centrifugal 4 at the middle part of lower end can't be along the radial motion of mechanism under the effect of middle part spring mechanism 5, and be in centrifugal 8 at the middle part of upper end because the quality of self compares less, even so can produce certain centrifugal force, but also can't roller 2 be held out against on the working position overcoming the centrifugal force that roller 2 self produces, so, according to the basic functional principle of roller-type overrunning clutch as can be known, at this moment roller 2 can't wedging, be under idle state, so motor drives star-wheel 1 is to be in a kind of state near No Load Start to start down basically, when the rotating speed of motor acquires a certain degree, general when 80% left and right sides of its rated speed, the output torque of motor has reached maximum value, raising along with rotating speed, at this moment, be in the centrifugal force that produces on centrifugal 4 at the middle part of lower end also in progressively increase, so at this moment its centrifugal force has overcome the effect of the pulling force of middle part spring mechanism 5, radially to roller 2 motions, form with joint efforts with centrifugal 8 centrifugal force that produces in the middle part that is in the upper end, and roller 2 held out against on the working position, make roller 2 enter the wedging state, as can be seen, under the condition that roller 2 rotates, at this moment roller 2 and to be between centrifugal 8 at the middle part of upper end be to be under a kind of rolling friction state of higher pair, and centrifugal 8 at the middle part that is in the upper end and centrifugal 4 at the middle part that is in the lower end are to be in the Frotteurism that a kind of line contacts, because the centrifugal force of the two generation is very little with respect to roller 2 and for the positive pressure between leading centrifugal 6, so the frictional heat of the two generation also is very little comparatively speaking, basically can ignore, this point is very favourable.At this moment, motor will drive star-wheel 1 and compress by being installed in centrifugal 6 of master on the star-wheel 1 and main spring mechanism 7 that roller 2 drives outer shrouds 3 by roller 2 and load begins to rotate, thereby reach the purpose of soft start.
Claims (4)
1. roller-type centrifugal clutch, has centrifugal mechanically controlled clutch mechanism, it is characterized in that: middle part centrifugal (4) adopt length cylindrical body or cirque body structure corresponding with roller (2) length, in the groove that is shaped on the master of centrifugal (4) radially close center of circle, described middle part one side centrifugal (6) magnet (5) are housed fixedly.
2. roller-type centrifugal clutch according to claim 1, it is characterized in that: magnet (5) is made magnetic direction along star-wheel (1) length radially and the corresponding rectangular shape of roller (2) length, or with a plurality of magnetic directions along star-wheel (1) rectangle of arranging along roller (2) length direction or the structure that combines of cylindrical magnet (5) radially.
3. roller-type centrifugal clutch according to claim 1 is characterized in that: between the position of centrifugal (4) and magnet (5), be shaped on one section protruding limit structure in the middle part of installing in the described groove.
4. roller-type centrifugal clutch, has centrifugal mechanically controlled clutch mechanism, it is characterized in that: will adopt the middle part centrifugal (4) of rectangular configuration and middle part spring mechanism (5) is radially whole moves a distance to position, the center of circle, and at the middle part on the plane of centrifugal (4) upper end, recombinant is installed centrifugal of the middle part with cylindrical or cirque structure (8) that length is corresponding with roller (2) length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200246612U CN201554794U (en) | 2009-05-08 | 2009-05-08 | Roller-type centrifugal clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200246612U CN201554794U (en) | 2009-05-08 | 2009-05-08 | Roller-type centrifugal clutch |
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| Publication Number | Publication Date |
|---|---|
| CN201554794U true CN201554794U (en) | 2010-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200246612U Expired - Fee Related CN201554794U (en) | 2009-05-08 | 2009-05-08 | Roller-type centrifugal clutch |
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|---|---|
| CN (1) | CN201554794U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106693376A (en) * | 2017-01-18 | 2017-05-24 | 广东好心情食品集团有限公司 | Suspension gyroscope |
-
2009
- 2009-05-08 CN CN2009200246612U patent/CN201554794U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106693376A (en) * | 2017-01-18 | 2017-05-24 | 广东好心情食品集团有限公司 | Suspension gyroscope |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20120508 |