CN103511505A - Centrifugal clutch - Google Patents
Centrifugal clutch Download PDFInfo
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- CN103511505A CN103511505A CN201210234880.XA CN201210234880A CN103511505A CN 103511505 A CN103511505 A CN 103511505A CN 201210234880 A CN201210234880 A CN 201210234880A CN 103511505 A CN103511505 A CN 103511505A
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- spring
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Abstract
The invention belongs to the mechanical soft start field and discloses a centrifugal clutch. A roller type overrun clutch mechanism is provided with a star wheel, wherein the star wheel is an outer star wheel. The centrifugal clutch is characterized in that a spring pin ejection mechanism arranged on the outer star wheel 3 in the roller type overrun clutch mechanism is omitted, wherein the star wheel of the roller type overrun clutch mechanism is the outer star wheel; a cylindrical centrifugal roller 4 is arranged near the position where the spring pin ejection mechanism is located in the prior art, wherein the cylindrical centrifugal roller 4 can conduct constrained motion from inside to outside in the direction parallel to the radial direction of the outer star wheel 3 and the cylindrical centrifugal roller 4 enables a roller 2 in the mechanism to tightly abut against the operation position through centrifugal force.
Description
One, technical field
The present invention is a kind of Novel centrifugal clutch that belongs to mechanical soft start field.
Two, background technique
We know, in mechanical field, the machinery especially soft start of heavy mechanical equipment is a very important problem.In the situation that be only limited to soft start and the overload protection of machinery, more conventional measure is at present to adopt load limiting type of constant filling fluid coupling to complete this work.Fluid coupling has in general function below: a, has the automatic adaptive functions of Flexible Transmission; b, have to slow down and impact and isolation torsional oscillation function; c, there is the motor of making light start function; and the maximum moment starting duty that can utilize motor improves the starting performance of motor; d, coordination Multi-unit Drive Systems; uniformly distributed load function, e, has electricity-saving function, f, has overload protection function etc.Thus, fluid coupling has played very important effect at present in mechanical field.
But we also know, fluid coupling also has some shortcomings that cannot overcome, and for example: working efficiency is relatively low, is generally 96% left and right, and being lost on main equipment of this power is just obvious.For another example: for some special industries, as colliery etc., reason in safety, can only be used the fluid coupling of aqueous medium, and the fluid coupling of aqueous medium is because the working medium adopting is water, so be easy to produce, reveal, thereby be easy to cause other component (as bearing, oil sealing etc.) to damage too early, so working life is relatively low, needs frequent maintenance or replacing, ，Jiu Gei enterprise has caused a lot of troubles and loss like this.This problem has become a difficult problem for a professional at present to a certain extent.
Three, summary of the invention
The object of the invention is to propose a kind ofly to adopt that mechanical method completes that the structure that machinery soft start requires is relatively simple, manufacture cost is relatively low, working efficiency is relatively high, overload protection is sensitiveer, working life the relatively also principle technological scheme of a kind of centrifugal clutch of the function such as long.
The present invention realizes like this, in mechanism, having star-wheel is the roller-type overrunning clutch mechanism of out star wheel, it is characterized in that: the out star wheel 3 Shang spring knock pin mechanisms that are arranged in the roller-type overrunning clutch mechanism that is out star wheel by star-wheel remove, near former spring knock pin mechanism position, install one can along out star wheel 3 be parallel to direction radially by interior do outward constrained that move and can hold out against the cylindrical centrifugal roller 4 on working position by the roller 2 in the effect Xia Jiang of centrifugal force mechanism.
The length of centrifugal roller 4 and roller 2 equal in length, and axis is parallel, the two justify align.
At the opposite side relative with centrifugal roller 4 of roller 2, a spring mechanism 5 that roller 2 is pushed up to the working surface disengaged direction with out star wheel 3 is installed.
Spring mechanism 5 a plurality of one end of employing are contained in the mechanical spring along being parallel to roller 2 axis arrangements that on out star wheel 3, the other end withstands on roller 2 and form.
Described mechanical spring is common mechanical stage clip or spring sheet.
One end of described mechanical spring, is arranged on the spring seat 6 of the strip rectangle parallel with out star wheel 3 axis at the position relative with roller 2 that is tightly packed in out star wheel 3.
Because the work object of the technical program is the soft start problem that solves machinery, so, although adopted the structure of roller-type overrunning clutch, be generally the operation problem that surmounts of not considering mechanism.
During specific works, out star wheel 3 is connected with the motor of input end, interior ring 1 is connected with load, because the weight of centrifugal roller 4 just makes its weight relatively little when the design, so, when the motor of equipment is just starting and rotating speed when relatively low, the centrifugal force that centrifugal roller 4 produces does not have push-tight effect substantially to roller 2, on the other hand, the centrifugal force producing due to roller 2 is reverse to make it away from normal operation position, so, at this moment a kind of input end of centrifugal clutch is in a kind of unloaded state rotating substantially, when the turn up of motor is to a certain extent time, when having reached the 70%-80% of rated speed, the operation torque of motor has reached maximum value, at this moment, the reason that centrifugal roller 4 improves due to motor speed, the centrifugal force of its generation has also increased accordingly, so, reached and overcome centrifugal force that roller 2 produces and by the degree on roller 2 tops to normal working positions, at this moment a kind of centrifugal clutch starts startup progressively, because the breakaway torque of motor has at this moment reached maximum value, and a kind of centrifugal clutch is owing to being the basic functional principle that adopts roller-type overrunning clutch, so from the principle, a kind of centrifugal clutch can adapt to combination under any rotating speed, and, temporary impact torque when mechanism can skid to reduce startup by the overload of short time, equipment is played a good protection.
When the motor speed that mates when mechanism is higher, general do not design too little of diameter due to centrifugal roller 4, so mechanism may just engage and start when compared with the slow-speed of revolution, therefore, in order to reach satisfied startup rotating speed, can be at the opposite side relative with centrifugal roller 4 of roller 2, the spring mechanism 5 when installation Yi Ge mechanism is static, roller 2 being pushed up to the working surface disengaged direction with out star wheel 3, like this, just can roller 2 be pushed up to the position of throwing off by an additional power, thereby make mechanism more convenient when design, and can under higher speed conditions, engage startup.
Because the present invention can meet the requirement of common mechanical equipment soft start; and structure is relatively simple, manufacture cost is relatively low, working efficiency is relatively high, overload protection is sensitiveer, working life the relatively also function such as long; so, after enforcement, can receive more positive effect.
Four, accompanying drawing explanation
The present invention has 2 accompanying drawings, and Fig. 1 is a kind of basic principle schematic of centrifugal clutch, and Fig. 2 has increased the basic principle schematic of spring mechanism 5 in a kind of mechanism of centrifugal clutch.
In each figure: 1, interior ring, 2, roller, 3, out star wheel, 4, centrifugal roller, 5, spring mechanism, 6, spring seat.
Five, embodiment
Below, in conjunction with Figure of description, the present invention is described in further detail.
As can be seen from Figure 1, in mechanism, having star-wheel is the roller-type overrunning clutch mechanism of out star wheel, it is characterized in that: the out star wheel 3 Shang spring knock pin mechanisms that are arranged in the roller-type overrunning clutch mechanism that is out star wheel by star-wheel remove, near former spring knock pin mechanism position, install one can along out star wheel 3 be parallel to direction radially by interior do outward constrained that move and can hold out against the cylindrical centrifugal roller 4 on working position by the roller 2 in the effect Xia Jiang of centrifugal force mechanism.
The length of centrifugal roller 4 and roller 2 equal in length, and axis is parallel, the two justify align.
Can find out, during specific works, out star wheel 3 is connected with the motor of input end, interior ring 1 is connected with load, because the weight of centrifugal roller 4 just makes its weight relatively little when the design, so, when the motor of equipment is just starting and rotating speed when relatively low, the centrifugal force that centrifugal roller 4 produces does not have push-tight effect substantially to roller 2, on the other hand, the centrifugal force producing due to roller 2 is reverse to make it away from normal operation position, so, at this moment a kind of input end of centrifugal clutch is in a kind of unloaded state rotating substantially, when the turn up of motor is to a certain extent time, when having reached the 70%-80% of rated speed, the operation torque of motor has reached maximum value, at this moment, the reason that centrifugal roller 4 improves due to motor speed, the centrifugal force of its generation has also increased accordingly, so, reached and overcome centrifugal force that roller 2 produces and by the degree on roller 2 tops to normal working positions, at this moment a kind of centrifugal clutch starts startup progressively, because the breakaway torque of motor has at this moment reached maximum value, and a kind of centrifugal clutch is owing to being the basic functional principle that adopts roller-type overrunning clutch, so from the principle, a kind of centrifugal clutch can adapt to combination under any rotating speed, and, temporary impact torque when mechanism can skid to reduce startup by the overload of short time, equipment is played a good protection.And, when equipment downtime, because mechanism has transcendent function, so can realize and freely shutting down under the condition that does not drag prime mover.
So this mechanism has No Load Start, overload protection, alleviates vibration, realizes and freely shut down, effectively utilize the temporary impact torque producing after prime mover No Load Start to carry out the flexible functions such as starting load under the condition that does not drag prime mover.There is the features such as detent torque is large, smooth engagement.
During concrete enforcement, in when coupling, should note making the slipping torque of mechanism to be greater than the peak torque of motor, like this, because mechanism has transcendent function, due to the effect of most of machinery due to inertia, under most of working condition, in mechanism, the mean speed of load can be a little more than the rotating speed of prime mover, therefore mechanism also has good vibration-damping function, the spike load that the equipment that can filter out largely produces in running, the working life of improving equipment.Mechanism moves because each parts and motor are in synchronous operation state under normal load, so non-slip, do not generate heat, there is no power loss, while reaching the slipping torque of mechanism while running into unexpected catching phenomenon in loading on running, mechanism will skid, disconnect spike load in short-term, when load restoration is normal, mechanism recovers normal working at once, when the load clamping stagnation time is long, motor arrives halted state by the short time inside brake being generally no more than for 5 seconds, at this moment the overload protective device of motor works, cut off the electricity supply, equipment is played a protective role.So when mechanism mates when reasonable, the working life that can improve greatly a kind of centrifugal clutch.
As can see from Figure 2, at the opposite side relative with centrifugal roller 4 of roller 2, a spring mechanism 5 that roller 2 is pushed up to the working surface disengaged direction with out star wheel 3 is installed.
Spring mechanism 5 a plurality of one end of employing are contained in the mechanical spring along being parallel to roller 2 axis arrangements that on out star wheel 3, the other end withstands on roller 2 and form.
Described mechanical spring is common mechanical stage clip or spring sheet.
The spring that adopts a plurality of edges to be parallel to roller 2 axis distributions is in order to increase the stability of mechanism, and like this, roller 2 just can not produce by the inclined to one side phenomenon in top.
One end of mechanical spring in spring mechanism 5, is arranged on the spring seat 6 of the strip rectangle parallel with out star wheel 3 axis at the position relative with roller 2 that is tightly packed in out star wheel 3.
Adopt the object of spring seat mainly from technique, to consider, because out star wheel 3 is overall structure, so adopt common mechanical processing technique to be difficult to make in the installation position of spring the installation through hole of cylinder-shaped compression spring or the installation screw of spring sheet, therefore, increase the spring seat 6 of an installation screw that is shaped with above spring mounting hole or spring sheet that is tightly packed in out star wheel 3 spring fitting positions or necessary.Certainly, if adopt the equipment punchings such as laser, or adopt gluing method, also can save spring seat 6.
When the motor speed that adopts the object Shi Dang mechanism of spring mechanism 5 to mate is higher, general do not design too little of diameter due to centrifugal roller 4, so mechanism may just engage and start when compared with the slow-speed of revolution, therefore, in order to reach satisfied startup rotating speed, can be at the opposite side relative with centrifugal roller 4 of roller 2, the spring mechanism 5 when installation Yi Ge mechanism is static, roller 2 being pushed up to the working surface disengaged direction with out star wheel 3, like this, just can roller 2 be pushed up to the position of throwing off by an additional power, thereby make mechanism more convenient when design, and can under higher speed conditions, engage startup.
Claims (6)
1. a centrifugal clutch, having star-wheel is the roller-type overrunning clutch mechanism of out star wheel, it is characterized in that: out star wheel (3) the Shang spring knock pin mechanism that is arranged in the roller-type overrunning clutch mechanism that is out star wheel by star-wheel removes, near former spring knock pin mechanism position, install one can be along out star wheel (3) be parallel to direction radially by interior that do outward constrained motion and can hold out against the cylindrical centrifugal roller (4) on working position by the roller (2) in the effect Xia Jiang of centrifugal force mechanism.
2. a kind of centrifugal clutch according to claim 1, is characterized in that: the length of centrifugal roller (4) and roller (2) equal in length, and axis is parallel, the two justify align.
3. a kind of centrifugal clutch according to claim 1, it is characterized in that: at the opposite side relative with centrifugal roller (4) of roller (2), install one roller (2) is pushed up to the spring mechanism (5) to the working surface disengaged direction with out star wheel (3).
4. a kind of centrifugal clutch according to claim 1, is characterized in that: spring mechanism (5) adopts a plurality of one end to be contained in the upper the other end of out star wheel (3) and withstands on forming along being parallel to the mechanical spring that roller (2) axis arranges on roller (2).
5. a kind of centrifugal clutch according to claim 4, is characterized in that: described mechanical spring is common mechanical stage clip or spring sheet.
6. a kind of centrifugal clutch according to claim 4, it is characterized in that: one end of described mechanical spring, is arranged on the spring seat (6) of the strip rectangle parallel with out star wheel (3) axis at the position relative with roller (2) that is tightly packed in out star wheel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210234880.XA CN103511505A (en) | 2012-06-25 | 2012-06-25 | Centrifugal clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210234880.XA CN103511505A (en) | 2012-06-25 | 2012-06-25 | Centrifugal clutch |
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| Publication Number | Publication Date |
|---|---|
| CN103511505A true CN103511505A (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210234880.XA Pending CN103511505A (en) | 2012-06-25 | 2012-06-25 | Centrifugal clutch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3176457A1 (en) * | 2015-12-02 | 2017-06-07 | Toyota Jidosha Kabushiki Kaisha | One-way clutch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1123890A (en) * | 1994-07-12 | 1996-06-05 | 株式会社岛野 | One way clutch |
| CN1521419A (en) * | 2003-02-13 | 2004-08-18 | 本田技研工业株式会社 | Rotation activated one-way clutch |
| US20050236247A1 (en) * | 2004-04-23 | 2005-10-27 | Nsk Warner K.K. | Rotary motion type one-way clutch |
| CN102042352A (en) * | 2009-10-11 | 2011-05-04 | 陈伯恒 | Novel centrifugal clutch |
| CN102135147A (en) * | 2010-01-22 | 2011-07-27 | 陈伯恒 | Novel pin roller centrifugal clutch |
-
2012
- 2012-06-25 CN CN201210234880.XA patent/CN103511505A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1123890A (en) * | 1994-07-12 | 1996-06-05 | 株式会社岛野 | One way clutch |
| CN1521419A (en) * | 2003-02-13 | 2004-08-18 | 本田技研工业株式会社 | Rotation activated one-way clutch |
| US20050236247A1 (en) * | 2004-04-23 | 2005-10-27 | Nsk Warner K.K. | Rotary motion type one-way clutch |
| CN102042352A (en) * | 2009-10-11 | 2011-05-04 | 陈伯恒 | Novel centrifugal clutch |
| CN102135147A (en) * | 2010-01-22 | 2011-07-27 | 陈伯恒 | Novel pin roller centrifugal clutch |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3176457A1 (en) * | 2015-12-02 | 2017-06-07 | Toyota Jidosha Kabushiki Kaisha | One-way clutch |
| KR20170065005A (en) * | 2015-12-02 | 2017-06-12 | 도요타 지도샤（주） | One-way clutch |
| CN107013607A (en) * | 2015-12-02 | 2017-08-04 | 丰田自动车株式会社 | One-way clutch |
| KR101893474B1 (en) * | 2015-12-02 | 2018-08-30 | 도요타 지도샤（주） | One-way clutch |
| CN107013607B (en) * | 2015-12-02 | 2019-10-15 | 丰田自动车株式会社 | One-way clutch |
| US10487888B2 (en) | 2015-12-02 | 2019-11-26 | Toyota Jidosha Kabushiki Kaisha | One-way clutch |
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