CN2773399Y - Overrunning clutch assembly - Google Patents
Overrunning clutch assembly Download PDFInfo
- Publication number
- CN2773399Y CN2773399Y CN 200420058688 CN200420058688U CN2773399Y CN 2773399 Y CN2773399 Y CN 2773399Y CN 200420058688 CN200420058688 CN 200420058688 CN 200420058688 U CN200420058688 U CN 200420058688U CN 2773399 Y CN2773399 Y CN 2773399Y
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- China
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- ratchet
- clutch assembly
- outer ring
- overdrive clutch
- wheel device
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- Expired - Fee Related
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Abstract
The utility model discloses an overrunning clutch assembly, which comprises a power shaft component, an outer ring gearwheel, a bearing and an overrunning clutch, the overrunning clutch adopts a ratchet wheel ratchet pawl type structure, the ratchet pawl is birdseye and is T-shaped, and the ratchet pawl can be engaged with ratchet teeth under the action of magnetic force. The utility model can transfer torque via extrusion engagement and can avoid the disadvantage that roller type or wedge block type overrunning clutches transfer torsion via friction, therefore the utility model can increase the operational reliability of the overrunning clutch assembly and can extend service life.
Description
Technical field
The utility model relates to a kind of overdrive clutch assembly, is used for mechanical power transmission system, as the speed reducer of loader.The employed free wheel device of this assembly adopts click formula structure, rely on the extruding engagement transferring power moment of torsion of ratchet and ratchet, avoid roller type or Wedge type over running clutch to rely on friction to come the shortcoming of transmitting torque, improve the functional reliability of free wheel device, thereby prolong the working life of overdrive clutch assembly and improve its working efficiency.
Background technique
Employed free wheel device in the engineering machinery transmission device, under frequent engagement and disengagement operating conditions, transmit Operating torque discontinuously, load and unload and all finish in a short period of time, this is very disadvantageous for the roller type or the Wedge type over running clutch that rely on overall viewing range, and this also is the basic reason that causes existing overdrive clutch assembly functional reliability difference.
Click formula free wheel device relies on extruding engagement transmitting torque not have friction means, can not influence its working life because of wearing and tearing; Owing to there is not reverse release moment, this free wheel device has higher working efficiency.But in the click formula free wheel device of conventional construction, ratchet relies on the elastic reset and the ratchet engagement of spring, and frequent engagement and surmounting is unfavorable for that spring works long-term effectively, thereby causes free wheel device to lose efficacy; Only the angle is big owing to return, and the impact load during transmitting torque also is unfavorable for the work of ratchet, and the Surface of action of ratchet also can or clash into because of extruding and be damaged.
China utility model patent ZL01246922.X, Chinese utility model patent ZL01224883.5, Chinese utility model patent ZL02259717.4 and Chinese utility model patent ZL00261332.8 disclose the overdrive clutch assembly that is used for engineering machinery separately respectively, though structural type is different, but all adopt the surface of contact friction of roller or voussoir and gear outer ring to come transmitting torque, reality is used also proof, although make great efforts to improve the friction means machining accuracy, the operational safety of overdrive clutch assembly is still lower.
Chinese invention patent ZL 01 1 29231.8 and Chinese utility model patent ZL 00 254031.2 disclose the ratchet type overrunning clutch that a kind of ratchet relies on magnetic force to reset, and have avoided using the defective of spring reset.This clutch is applicable to the working state of long-time engagement, and when being used for surmounting working state for a long time, ratchet and ratchet need frequently contact, and is easy to wear and parts are damaged.Owing to define the position of magnet and ratchet is not optimized design, it is excessive to cause meshing part to take up room, when transmitting rated torque, and can't be in the inner installation of the outer ring gear of overdrive clutch assembly.
Summary of the invention
The defective that the purpose of this utility model is to overcome existing roller or Wedge type over running clutch assembly working life is short, reliability is low, a kind of ratchet type overrunning clutch that uses novel pawl structures and resetting means thereof is provided, improve the working life and the reliability of overdrive clutch assembly, and then improve the power transmission performance of engineering machinery.The utility model is specially adapted to engineering machinery, as the loader speed reducer.
Overdrive clutch assembly provided by the utility model comprises powered axle assemblies, bearing and free wheel device, and described free wheel device is a click formula structure, and employed ratchet is made by magnetic conductive material, as steel.The width of described ratchet stem contact jaw is greater than the width of its axial region and afterbody, and ratchet is overlooked and is " T " font, and the reseting torque of described ratchet is provided by magnetic force or with the combination of elastic force.Described powered axle assemblies comprises transmission shaft and driving gear, the two relative fixed or be processed as one.
Described overdrive clutch assembly also can comprise outer ring gear, free wheel device is embedded between the outer ring and inner ring of outer ring gear.Pawl disk is fixed on the driving gear of powered axle assemblies, and described pawl disk can be rotated with the transmission shaft of driving gear and the powered axle assemblies inner ring with respect to outer ring gear.Described free wheel device also can not have ratchet, ratchet is set directly on the inner side surface of outer ring of outer ring gear.
Ratchet is rotatably mounted on the pawl disk by pivot pin, and pawl disk is fixed on the side of driving gear near outer ring gear, and its position should make ratchet and ratchet that best engagement effect is arranged, and remains with certain clearance between the inner ring of pawl disk and outer ring gear.Ratchet number and ratchet number be prime number each other, during engagement, a ratchet and ratchet engagement is arranged in turn at every turn, to prolong the working life of ratchet; By the quantity and the physical dimension of change ratchet and ratchet, can effectively change the accuracy of mesh (return and end the angle) or the transmitting torque of clutch, by said method, just can effectively reduce engagement extruding and impact influence to ratchet.
Described magnetic force is produced by magnet, and this magnet is fixed on the pawl disk and is positioned at and the corresponding position of described ratchet afterbody.Described magnet can be permanent magnet or also can be electromagnet.Described magnet can be made of magnetic substance, as neodymium iron boron.
Be fixed with the equilibrium block that is used to adjust the ratchet mass balance on described ratchet, equilibrium block is made by the bigger material of density of mass, as: lead, its quality and position can be adjusted as required.
The as a whole structure of the pawl structures of described free wheel device is divided into stem, axial region and three parts of afterbody according to function, and the ratchet afterbody bears the active force of resetting means, and the stem of described pawl structures, axial region and afterbody are overlooked and be " T " font.Stem comprises the contact jaw with surface of contact, and its width is greater than the width of ratchet axial region and afterbody.
The engagement of described ratchet and ratchet can be finished under the effect of magnetic force separately, and magnet is installed in the installation sleeve of being made by non-magnet_conductible material, and is fixed on the pawl disk positive corresponding with the ratchet afterbody.This position should make magnetic force to the reset torque maximum that ratchet caused, and magnet and installation sleeve thereof are not come in contact with the ratchet afterbody.
In order to transmit the more needs of high pulling torque, overdrive clutch assembly can also adopt another kind of similarly structural type, that is: driving cog directly is processed in the ratchet outside of free wheel device, thereby does not use outer ring gear.
The related free wheel device of the utility model has been optimized the structure and the stress of ratchet, makes the stress of stress that surface of contact is subjected to and pivot pin all near the maximum value of design allowed band, to reduce the shared space of transmission part.The length of the stem of described pawl structures and shape can guarantee the engaging stress direction of itself and ratchet, as much as possible perpendicular to the line of pivot pin and pawl disk central shaft, thereby transmit big as far as possible moment of torsion.Described pawl structures has reduced space shared when transmitting same torque, makes free wheel device can be installed in rightly between the outer ring and inner ring of outer ring gear.
Another advantage of the present utility model is that the engagement of described ratchet and ratchet can be finished separately under the effect of magnetic force, because described ratchet resets and can not adopt spring.This causes the clutch failure phenomenon with regard to having been avoided because of spring fatigue destroys, and has prolonged the working life of free wheel device.
Another advantage of the present utility model is, be fixed with the equilibrium block that is used to adjust the ratchet mass balance on the described ratchet, when pawl disk was in high speed rotating, this equilibrium block can be adjusted the size of the suffered centrifugal force of ratchet, alleviated so that avoid the wearing and tearing of ratchet and ratchet.
Another advantage of the present utility model is that it has improved the working life and the reliability of overdrive clutch assembly, and then has improved the power transmission performance of engineering machinery
It is that outer shroud, pawl disk are the structure of interior ring that described free wheel device adopts ratchet.According to different use condition, also can adopt pawl disk is that outer shroud, ratchet are the structure of interior ring, at this moment, pawl disk is fixed on side ring surface in the outer ring of outer ring gear, ratchet is fixed on the inboard of pawl disk, and ratchet fixed conveyor gear is near the side of outer ring gear, and ratchet is at the outer ring surface of ratchet, its position should make ratchet and ratchet that best engagement effect is arranged, and remains with certain clearance between the inner ring of ratchet and outer ring gear.
Description of drawings
Fig. 1 is embedded in the structure schematic cross section of outer ring gear inboard for free wheel device.
Fig. 2 is the side view of ratchet in the structure shown in Figure 1.
Fig. 3 is the side view of pawl disk in the structure shown in Figure 1.
Fig. 4 is the side view of ratchet.
Fig. 5 is the plan view of ratchet.
Fig. 6 is the schematic cross section of another overdrive clutch assembly structure.
Fig. 7 is the side view of ratchet in the structure shown in Figure 6.
Embodiment
As shown in Figure 1, overdrive clutch assembly provided by the utility model comprises powered axle assemblies, outer ring gear, bearing and free wheel device.Described powered axle assemblies comprises transmission shaft 9 and driving gear 8, the two relative fixed or be processed as one, and fixing by bearing 10.Outer ring gear 1 is an overall structure, comprises an outer ring 2 and an inner ring 3, is supported on the transmission shaft 9 by bearing 21.
As shown in Figures 2 and 3, free wheel device is made up of ratchet 4 and pawl disk 7, and is embedded between the outer ring 2 and inner ring 3 of outer ring gear 1.Ratchet 4 is fixed on the interior side ring surface of outer ring 3, those skilled in the art will appreciate that can save ratchet 4 and the direct ratchet 19 of directly processing on the interior side ring surface of outer ring 2.Ratchet 5 is rotatably mounted on the pawl disk 7 by pivot pin 6, pawl disk 7 is fixed on the side of driving gear 8 near outer ring gear 1, its position should make ratchet 5 and ratchet 19 that best engagement effect is arranged, and remains with certain clearance between the inner ring 3 of pawl disk 7 and outer ring gear 1.
As shown in Figure 4 and Figure 5, described ratchet 5 as a whole structures, make by ferromagnetic substance, be divided into stem 12, axial region 13 and 14 3 parts of afterbody according to function, stem 12 comprises the contact jaw 16 with surface of contact 17, axial region 13 is installed in rotation on the supporting structure 20 of pawl disk 7 by pivot pin 6, and supporting structure 20 is evenly arranged in the periphery of pawl disk 7, and afterbody 14 is positioned at the forward corresponding position of the magnet 11 that is fixed on the pawl disk 7 and does not contact.The stem 12 of described ratchet 5, axial region 13 and afterbody 14 are overlooked and are " T " font, and the width of the contact jaw 16 of stem 12 is greater than the width of axial region 13 and afterbody 14.The length of the stem 12 of described ratchet 5 and shape can guarantee the engaging stress direction of itself and ratchet 19, as much as possible perpendicular to the line of pivot pin 6 and pawl disk 7 central axis, thereby transmit maximum moment of torsion.
Have oil groove 18 in the axis hole 15 of ratchet 5, equilibrium block 23 is fixed on the ratchet 5.Magnet 11 is sleeved in the installation sleeve made by non-magnet_conductible material 22 and is fixed on the pawl disk 7, and is corresponding with the afterbody 14 of ratchet 5, and its position should make the reset torque maximum that magnetic force produced of 11 pairs of ratchets 5 of magnet.Described magnet 11 can as neodymium iron boron, also can adopt electromagnet for the permanent magnet that is made of magnetic substance.Installation sleeve 22 is made of non-magnet_conductible material, as: aluminium.Those skilled in the art will appreciate that resetting of ratchet 5 also can be provided by the complex form of magnet and spring, to adapt to special work condition environment.
It is that outer shroud, pawl disk 7 are the structure of interior ring that described free wheel device adopts ratchet 4.It will be appreciated by those skilled in the art that, according to different use condition, also can adopt pawl disk 7 to be the structure (not shown) of interior ring, at this moment for outer shroud, ratchet 4, pawl disk 7 is fixed on the interior side ring surface of the outer ring 2 of outer ring gear 1, and ratchet 5 is fixed on the inboard of pawl disk 7; Ratchet 4 is fixed on the side of driving gear 8 near outer ring gear 1, and its position should make ratchet 5 and ratchet 19 that best engagement effect is arranged, and ratchet 19 remains with certain clearance at the outer ring surface of ratchet 4 between the inner ring 3 of ratchet 4 and outer ring gear 1.
In order to transmit the more needs of high pulling torque, overdrive clutch assembly can also adopt another kind of similarly structural type, as Fig. 6, shown in Figure 7, driving cog directly is processed in ratchet 4 outsides of free wheel device, the inboard is processed with ratchet 19, and ratchet 4 is supported by the bearing 21 that is fixed on ratchet 5 supporting structures 20 both sides on the pawl disk 7.Pawl disk 7 and driving gear 8 and line shaft 9 are all fixed as a whole, do not rotate each other.The relative position of ratchet 4 and pawl disk 7 also can exchange, and this moment, there was driving cog in the outside of pawl disk 7, and the inboard is provided with ratchet 5 and supporting structure 20 thereof.
Claims (10)
1, a kind of overdrive clutch assembly, it comprises powered axle assemblies, bearing and free wheel device, described powered axle assemblies comprises transmission shaft and driving gear, it is characterized in that: described free wheel device is a click formula structure, the width of employed ratchet stem contact jaw is greater than the width of its axial region and afterbody, ratchet is overlooked and is " T " font, and the reseting torque of described ratchet is provided by magnetic force or with the combination of elastic force.
2, overdrive clutch assembly according to claim 1 is characterized in that: this overdrive clutch assembly also comprises outer ring gear, and free wheel device is embedded between the outer ring and inner ring of outer ring gear.
3, overdrive clutch assembly according to claim 1 is characterized in that: the ratchet outside of described free wheel device can directly be processed with driving cog.
4, according to claim 2 or 3 described overdrive clutch assemblies, it is characterized in that: the pawl disk of described clutch is fixed on the driving gear of powered axle assemblies, and described pawl disk can rotate with respect to outer ring gear with the line shaft assembly.
4, overdrive clutch assembly according to claim 2 is characterized in that: described free wheel device can not have ratchet, and ratchet is set directly on the inner side surface of outer ring of outer ring gear.
5, overdrive clutch assembly according to claim 2 is characterized in that: the position of described ratchet and described pawl disk can exchange.
6, overdrive clutch assembly according to claim 1 is characterized in that: the number of described ratchet and the number of ratchet be prime number each other.
7, overdrive clutch assembly according to claim 1, it is characterized in that: wherein said magnetic force is produced by magnet, described magnet is permanent magnet or electromagnet, is installed in the installation sleeve of being made by non-magnet_conductible material and is fixed on together on the pawl disk and the positive corresponding position of described ratchet afterbody.
8, according to claim 1 or 2 or 3 described overdrive clutch assemblies, it is characterized in that: described ratchet is made by magnetic conductive material, and it is distributed on the supporting structure of pawl disk rotationally by pivot pin.
10, according to claim 1 or 2 or 3 described overdrive clutch assemblies, it is characterized in that: be fixed with the equilibrium block that is used to adjust the ratchet mass balance on described ratchet, this mass of balance block density is greater than the density of mass of ratchet self material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420058688 CN2773399Y (en) | 2004-12-16 | 2004-12-16 | Overrunning clutch assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420058688 CN2773399Y (en) | 2004-12-16 | 2004-12-16 | Overrunning clutch assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2773399Y true CN2773399Y (en) | 2006-04-19 |
Family
ID=36708662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420058688 Expired - Fee Related CN2773399Y (en) | 2004-12-16 | 2004-12-16 | Overrunning clutch assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2773399Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410317A (en) * | 2011-08-01 | 2012-04-11 | 台州市黄岩华阳机电科技有限公司 | Centrifugal clutch and electric vehicle gear-shifting drive hub with same |
| CN102713249A (en) * | 2010-11-29 | 2012-10-03 | 丰田自动车株式会社 | Internal combustion engine and method for assembling internal combustion engine |
| CN105156618A (en) * | 2015-09-09 | 2015-12-16 | 西南大学 | External rotor motor cyrtoconic swing type self-adaption automatic variable speed drive assembly of electric motor car |
| CN105299217A (en) * | 2015-09-09 | 2016-02-03 | 西南大学 | Pendulum type self-adaption automatic variable speed drive assembly of electric motorcycle inner rotor motor bow cone |
| CN109812515A (en) * | 2017-11-21 | 2019-05-28 | 周承岗 | Combined type freewheel clutch |
-
2004
- 2004-12-16 CN CN 200420058688 patent/CN2773399Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102713249A (en) * | 2010-11-29 | 2012-10-03 | 丰田自动车株式会社 | Internal combustion engine and method for assembling internal combustion engine |
| CN102410317A (en) * | 2011-08-01 | 2012-04-11 | 台州市黄岩华阳机电科技有限公司 | Centrifugal clutch and electric vehicle gear-shifting drive hub with same |
| CN102410317B (en) * | 2011-08-01 | 2014-04-09 | 台州市黄岩华阳机电科技有限公司 | Centrifugal clutch and electric vehicle gear-shifting drive hub with same |
| CN105156618A (en) * | 2015-09-09 | 2015-12-16 | 西南大学 | External rotor motor cyrtoconic swing type self-adaption automatic variable speed drive assembly of electric motor car |
| CN105299217A (en) * | 2015-09-09 | 2016-02-03 | 西南大学 | Pendulum type self-adaption automatic variable speed drive assembly of electric motorcycle inner rotor motor bow cone |
| CN109812515A (en) * | 2017-11-21 | 2019-05-28 | 周承岗 | Combined type freewheel clutch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Ketai Transmission Technology (Tianjin) Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060419 Termination date: 20081216 |