CN109812515A - Combined type freewheel clutch - Google Patents
Combined type freewheel clutch Download PDFInfo
- Publication number
- CN109812515A CN109812515A CN201711165386.1A CN201711165386A CN109812515A CN 109812515 A CN109812515 A CN 109812515A CN 201711165386 A CN201711165386 A CN 201711165386A CN 109812515 A CN109812515 A CN 109812515A
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- China
- Prior art keywords
- pawl
- ratchet
- clutch
- combined type
- engagement
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- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000035945 sensitivity Effects 0.000 claims abstract description 5
- 230000000295 complement effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000000116 mitigating effect Effects 0.000 abstract description 2
- 230000033001 locomotion Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Mechanical Operated Clutches (AREA)
Abstract
Combined type freewheel clutch, include main overrunning clutch and auxiliary overrunning clutch, it uses ratchet and pawl as main clutch transmission, to improve load-carrying ability and the circumferential size of ratchet is reduced with more pawls, using other types of overrunning clutch as auxiliary, stroke is cooperated to convert enlarger simultaneously, engage lead-in chamfered, guide's pawl, avoid gap, the use of the multiple technologies means such as buffer gear, it is worn mitigating, extend the service life, eliminate conflict, slow down impact, control sensitivity, transmission accuracy, engage orientation angles limitation, all various aspects such as application range have also been achieved new progress.
Description
Technical field
The present invention provides a kind of freewheel clutch.
Background technique
Freewheel clutch mainly has frictional, engagement type two major classes at present.Frictionally generally made with ball, cylinder, voussoir
For locking element, have the shortcomings that easy to wear, the service life is short, it is small to bear load.It is engagement type mainly to have ratchet-type, it is rigid using face contact
Property transmission can bear biggish load, the structure of single ratchet type is simple, in conjunction with and separation it is all very easy, reliability also compared with
It is high, it may be said that advantage is very significant, but the back pressure face of pawl needs in over-travel and ratchet is kept in contact, frequent to hit not
But biggish noise is generated, energy consumption is also increased and is reduced the service life, using being very limited, is suitable only for low speed occasion,
In addition, single ratchet type in axial dimension by limited time, Yao Tigao load-carrying ability must increase the circumferential size of ratchet, this is just increased
Idle running angle and mesh impact, although and more ratchet types can greatly improve load-carrying ability, noise, transmission impact and system
Make engagement conflict caused by precision and pawl action asynchronism to be still difficult to avoid that, big load ability and highly reliable cannot be had both
Property.
Summary of the invention
The object of the present invention is to provide a kind of comprising main overrunning clutch and assists the composite construction of overrunning clutch
Freewheel clutch uses ratchet and pawl as main clutch transmission, is improved load-carrying ability with more pawls and is reduced
The circumferential size of ratchet using other types of overrunning clutch as auxiliary, while cooperating stroke conversion enlarger, nibbling
The use for closing the multiple technologies means such as lead-in chamfered, guide's pawl, evacuation gap, buffer gear is mitigating abrasion, is extending the longevity
Life eliminates conflict, slows down all various aspects such as impact, control sensitivity, transmission accuracy, engagement orientation angles limitation, application range
Also it has achieved new progress.Transmission of the invention includes ratchet (5) and pawl (13), they do not need to protect in over-travel
Contact is held, has complementary overrunning clutch in outer ring (1) or inner ring (3), ratchet (5) can be triggered and pawl (13) is entering
Engagement action, offer when in conjunction with stroke engage power or slow down transmission impact.
It include that stroke converts amplifying device in complementary overrunning clutch of the invention, it can be complementary overdrive clutch
The circumferential stroke of frictional locking element in device is converted into the bigger stroke of pawl (13), makes ratchet (5) and pawl (13)
It is in when fully engaged position bears Main Load, complementary overrunning clutch locking element not yet reaches locking position
It sets, thus improves engagement sensitivity, and mitigate the degree that locking element is extruded to prolong its service life.
The present invention has multiple ratchets (13), has throw-out collar (11) or flexible structure to be together in series between them, by a set of auxiliary
Arrangement of clutch synchronously control.
Between outer ring (1) of the invention and its external load perhaps between inner ring (3) and key (7) or key (7) and axis
(2) it between, is reserved with circumferential gap in junction and padded coaming is set therebetween and rushed to absorb engagement conflict or buffering engagement
It hits.
The way of contact of ratchet (5) or pawl (13) of the invention is face contact, and tooth top section shape is wedge angle, at top
State labile when having conflict and convenient for being staggered before and after Meshing Pair, alternatively, on outer ring 1, inner ring 3, ratchet 5 or pawl 13
Magnetic material is set, and polarity distribution can guide the tooth tip of both sides to avoid collision position in engagement.
In the embodiment of more pawls (13) of the invention, there is a leading type pawl, it is always the first one in engagement process
It is first contacted with ratchet (5), when there is tooth tip conflict, the pinnacle of other pawls (13) can be led unanimously to avoid forward or backward
The pinnacle of ratchet (5).
Detailed description of the invention
Fig. 1 is the axial arrangement figure of single unit system；
Fig. 2 is the radial junction composition of single unit system；
Fig. 3 pawl radial motion control structure figure；
Fig. 4 is the scheme schematic diagram for coping with tooth top conflict.
Specific embodiment
Referring to Fig.1, Fig. 2 or Fig. 3, axis 2 are fixedly connected by key 7 with inner ring 3, are connected by bearing 15 and the rotation of end cap 14
It connects, end cap 14 is fixedly connected with outer ring 1；Raceway 16 and the equally distributed ratchet of direction congruous continuity are fixedly installed on outer ring 1
5；Spring 6, roller 8 and its movable platform, lever 10, throw-out collar 11, elastic force block 12, pawl 13 are set in inner ring 3, and pawl 13 can
To engage or separate with ratchet 5 by radially sliding or swinging, quantity can be divided exactly by the quantity of ratchet 5, uniformly divide circumferential
Cloth, lever 10 are rotatablely connected by pin 9 and inner ring 3, and throw-out collar 11 is flexibly connected by wedge surface 17 with pawl 13；Roller 8 is in bullet
It keeps contacting with the raceway 16 of outer ring 1 under the pressure of spring 5, meanwhile, roller 8, lever 10 and pawl 13 are in spring 5 and spring 4
Also dynamic Contact is kept under bidirection press.When revolving speed is greater than outer ring 1 to inner ring 3 in the clockwise direction, roller 8 is clamped and outside
Relatively narrow side is mobile in the space that ring 1 and inner ring 3 are constituted, and pushes throw-out collar 11 circumferential mobile by lever 10, the wedge of throw-out collar 11
Face 17 is released to the radial constraint of pawl 13, and at this moment pawl 13 is pushed to ratchet 5 and is engaged by elastic force block 12；When inner ring 3 is suitable
When clockwise revolving speed is less than outer ring 1, wider side is mobile in the space that roller 8 is constituted to outer ring 1 and inner ring 3, throw-out collar 11
In circumferential movement under the pressure of spring 4, pawl 13 is pushed away ratchet 5 by wedge surface 17.Moving radially for pawl 13 can also be by
Throw-out collar 11 is arranged two-way wedge surface and carrys out double-direction control, saves elastic force block 12；Throw-out collar 11 can be replaced using flexible structure, circumferential direction
Movement can also save spring 4 using the structure with 8 two-way linkage of roller come double-direction control；Ratchet 5, raceway 16 can also be set
It sets in inner ring 3, correspondingly, spring 6, roller 8 and its movable platform, lever 10, throw-out collar 11, elastic force block 12, pawl 13 can also
To be arranged on outer ring 1；Spring 6 and roller 8 are used as a kind of complementary overrunning clutch, can also use other types of skill
Art replaces, including but not limited to Wedge-type, flexible ring type, chain ring type, photo-electric, hydraulic type, pneumatic type, magnetic-type, artificial behaviour
Control formula or above listed combination；Bearing 15 between axis 2 and end cap 14 can be replaced with sliding shaft sleeve, or directly sliding connects
It connects；Roller 8 can alleviate the impact generated in engagement process during gradually wedging, because not needing to undertake Main Load,
Its making material is not limited to high-strength metal material, in order to preferably alleviate impact, can also use the preferable material of elasticity,
Such as polyurethane, polytetrafluoroethylene (PTFE).
Referring to Fig.1, lever 10 is at one end that fulcrum and inner ring 3 are rotatablely connected with pin 9, and the other end is contacted with throw-out collar 11,
And it is in middle section with the contact point of roller 8, when entering in conjunction with stroke, the shift motion of roller 8 can be by the free end of lever 10
Amplify and be further converted into the radial stroke of pawl 13.Stroke may be reduced in the conversion process by certain links, in order to
Guarantee that the stroke of pawl 13 is greater than the stroke of roller 8, amplifying device can be arranged with many places.Amplification factor is bigger, and pawl 13 is more
Fast to reach the position of engagement, the sensitivity of freewheel clutch is higher, pawl 13 reach the position of engagement bear Main Load with
After prevent from roller 9 and slide further towards limit wedging position, it is possible thereby to which mitigate the degree that roller 8 is extruded makes to extend
Use the service life.
Embodiment as shown in Figure 1,11 sets of throw-out collar in inner ring 3, can radially be limited, multiple in circumferential movement
Pawl 13 is together in series synchronously control, and the movement of roller 8 can lead to the consistent movement of multiple ratchets 13.As shown in figure 3, throw-out collar
11 when circumferentially mobile, and wedge surface 17 moves radially pawl 13 with 12 mating reaction of elastic force block.Pawl 13 moves radially
Two-way wedge surface can be set by throw-out collar 11 come double-direction control, save elastic force block 12.Throw-out collar 11 can also be replaced with flexible structure.
It, can be between outer ring 1 and its external load or inner ring 3 in order to absorb engagement conflict or buffering mesh impact
Between key 7 or between key 7 and axis 2, circumferential gap is reserved in junction and padded coaming, Fig. 1 institute are set therebetween
The embodiment shown is preset clearance and padded coaming to be arranged between key 7 and axis 2.
Referring to Fig. 3, the way of contact of ratchet 5 or pawl 13 is face contact, and tooth top section shape is wedge angle, so as at top
It is convenient for being staggered before and after Meshing Pair because of state labile when having conflict, it can also be on outer ring 1, inner ring 3, ratchet 5 or pawl 13
Magnetic material is set, the tooth tip of engagement both sides is guided to avoid collision position using its polarity distribution.
In more pawl embodiments as shown in Figure 3, ratchet 5 and pawl 13 are all uniformly distributed, and the quantity of ratchet 5 is pawl
13 integral multiple, so, each pawl 13 position opposite with the front and back between nearest ratchet 5 in case of no collision
Set and be always consistent, but due to the presence of scale error, engagement action occur exactly at pinnacle collision position or it is neighbouring when, spine
13 some of pawl is staggered with ratchet 5 forward, and some is staggered with ratchet 5 backward, this results in engagement that can not continue, for this purpose, setting
Set leading type pawl as the first from left in a figure --- because its radial dimension is larger or installation site is more outer, nibbling
Always the first one elder generation contacts with ratchet 5 during conjunction.The back pressure face 20 of ratchet 5 and the angle of diameter are larger, and working face 18 with
The angle of diameter is smaller, and guide surface 19 is arranged in the direction of working face 18, with the angle of diameter and back pressure face 20 and diameter
Corner dimension is suitable, and circumferential width a is greater than when it is just in pinnacle collision position, other pawls and nearest ratchet 5
Pinnacle distance in maximum one, pinnacle can be slided along guide surface 19 or back pressure face 20, lead other pawls 13
Pinnacle unanimously avoid the pinnacle of ratchet 5 forward or backward.Guide surface 19 also can be set on pawl 13.
Claims (6)
1. combined type freewheel clutch, including outer ring (1), inner ring (3), transmission, it is characterised in that transmission includes ratchet (5)
With pawl (13), they do not need to be kept in contact in over-travel, have complementary overdrive clutch in outer ring (1) or inner ring (3)
Device can trigger ratchet (5) and pawl (13) and enter engagement action when combining stroke, provides engagement power or slow down biography
Dynamic impact.
2. combined type freewheel clutch described in claim 1, it is characterised in that include stroke in complementary overrunning clutch
Amplifying device is converted, the circumferential stroke of the frictional locking element in complementary overrunning clutch can be converted into pawl
(13) bigger stroke is in ratchet (5) and pawl (13) when fully engaged position bears Main Load, complementary super
More arrangement of clutch locking element not yet reaches lock position, thus improves engagement sensitivity, and mitigates locking element and be extruded
Degree prolong its service life.
3. combined type freewheel clutch of any of claims 1 or 2, it is characterised in that have multiple ratchets (13), have between them
Throw-out collar (11) or flexible structure are together in series, by a set of auxiliary arrangement of clutch synchronously control.
4. combined type freewheel clutch as claimed in claim 3, it is characterised in that between outer ring (1) and its external load, or
Between inner ring (3) and key (7) or between key (7) and axis (2), circumferential gap is reserved in junction and setting therebetween is slow
Material is rushed to absorb engagement conflict or buffering mesh impact.
5. combined type freewheel clutch described in claim 1,2 or 4, it is characterised in that the contact of ratchet (5) or pawl (13)
Mode is face contact, and tooth top section shape is wedge angle, the state labile when conflict is arranged at top and convenient for being staggered before and after Meshing Pair,
Alternatively, magnetic material is set on outer ring 1, inner ring 3, ratchet 5 or pawl 13, polarity distribution can guide both sides'
Tooth tip avoids collision position in engagement.
6. combined type freewheel clutch described in claim 5, it is characterised in that in the embodiment of more pawls (13), before having one
Conductivity type pawl, always the first one elder generation contacts with ratchet (5) in engagement process, when there is tooth tip conflict, can lead other
The pinnacle of ratchet (5) is unanimously avoided forward or backward in the pinnacle of pawl (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165386.1A CN109812515A (en) | 2017-11-21 | 2017-11-21 | Combined type freewheel clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165386.1A CN109812515A (en) | 2017-11-21 | 2017-11-21 | Combined type freewheel clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109812515A true CN109812515A (en) | 2019-05-28 |
Family
ID=66600281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711165386.1A Pending CN109812515A (en) | 2017-11-21 | 2017-11-21 | Combined type freewheel clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109812515A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200436A (en) * | 2021-06-02 | 2021-08-03 | 广州广日电梯工业有限公司 | Self-adaptive buffer device for additional brake of escalator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2743610Y (en) * | 2004-10-12 | 2005-11-30 | 何建军 | Pawl wheel type overriding clutch |
| CN1760563A (en) * | 2004-10-12 | 2006-04-19 | 何建军 | Ratchet type overrunning clutch |
| CN2773399Y (en) * | 2004-12-16 | 2006-04-19 | 科泰传动技术（天津）有限公司 | Overrunning clutch assembly |
| CN201152326Y (en) * | 2007-07-03 | 2008-11-19 | 何建军 | Overrunning clutch and its assembly |
| CN206571851U (en) * | 2017-03-12 | 2017-10-20 | 周承岗 | Contrate gear freewheel clutch |
| CN207687221U (en) * | 2017-11-21 | 2018-08-03 | 周承岗 | Combined type freewheel clutch |
-
2017
- 2017-11-21 CN CN201711165386.1A patent/CN109812515A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2743610Y (en) * | 2004-10-12 | 2005-11-30 | 何建军 | Pawl wheel type overriding clutch |
| CN1760563A (en) * | 2004-10-12 | 2006-04-19 | 何建军 | Ratchet type overrunning clutch |
| CN2773399Y (en) * | 2004-12-16 | 2006-04-19 | 科泰传动技术（天津）有限公司 | Overrunning clutch assembly |
| CN201152326Y (en) * | 2007-07-03 | 2008-11-19 | 何建军 | Overrunning clutch and its assembly |
| CN206571851U (en) * | 2017-03-12 | 2017-10-20 | 周承岗 | Contrate gear freewheel clutch |
| CN207687221U (en) * | 2017-11-21 | 2018-08-03 | 周承岗 | Combined type freewheel clutch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200436A (en) * | 2021-06-02 | 2021-08-03 | 广州广日电梯工业有限公司 | Self-adaptive buffer device for additional brake of escalator |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190528 |