CN201373042Y - Outer star-wheel type overrunning clutch of loader dual-axis assembly - Google Patents
Outer star-wheel type overrunning clutch of loader dual-axis assembly Download PDFInfo
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- CN201373042Y CN201373042Y CN200920136325U CN200920136325U CN201373042Y CN 201373042 Y CN201373042 Y CN 201373042Y CN 200920136325 U CN200920136325 U CN 200920136325U CN 200920136325 U CN200920136325 U CN 200920136325U CN 201373042 Y CN201373042 Y CN 201373042Y
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- roller
- wheel
- retainer
- star
- elastic element
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Abstract
The utility model discloses an outer star-wheel type overrunning clutch of a loader dual-axis assembly, which consists of an outer star-wheel rim, a retainer frame, elastic elements, rollers and an elastic retainer ring. The retainer frame is sleeved inside the outer star-wheel rim, the elastic retainer ring is clamped inside the outer star-wheel rim, and the inner end face of the elastic retainer ring is abutted against the outer end face of the retainer frame. The overrunning clutch has fine synchronism by utilizing a pretension mode of one-to-one and one elastic plate-to-one roller and has fatigue resistance without oil cylinder effect or carbon deposition by utilizing M-shaped sheet springs. Moreover, as an inner race of the overrunning clutch is circular, the inner race contacts with the rollers in a sliding friction form, when an input shaft rotates with high speed, the rollers and the springs can not rotate along with an race of the input shaft rotates, the springs are uneasy to be fatigue, and then the overrunning clutch is smooth in rotation, low in friction and uneasy to be heated.
Description
Technical field
The utility model relates to a kind of, particularly relates to a kind of external star-wheel type loader two axle assembly free wheel devicees.
Background technique
Domestic at present domestic nearly three kinds of the free wheel device that is applied on loader two axle assemblies, a kind of is to isolate posture star-wheel free wheel device, and another kind is a knock pin type star-wheel free wheel device, and the third is two retainer Wedge type over running clutch.These three kinds of forms respectively have pluses and minuses.
First kind is tradition band isolating frame 1A formula star-wheel loader two axle assembly free wheel devicees (as shown in Figure 1), this clutch is to utilize 20-24 isolation window 11A on the isolating frame 1A to promote 20-24 roller 2A pretension between the plane raceway of the interior raceway of outer ring gear 3A and star-wheel, and the frictional force that linear differential produced of inner outer raceway drives roller 2A and realizes locking and separate.Its drawback is: the size of each isolation window 11A of isolating frame 1A and five equilibrium require accurately absolute, and star-wheel center high request is definitely equal, and quality is restive when existing processing method is produced in batches.Because the center height of isolating frame 1A and star-wheel cannot be processed into absolute precision, make pretension that 20-24 roller 2A can't be synchronous on two raceways, so each roller 2A outer shroud and input shaft in conjunction with the time unbalance stress asynchronous, thereby caused the 20-24 working surface on the star-wheel successively to be worn and torn, what the damage of aggravation clutch and isolation added tears the very fast inefficacy of final two axle assemblies.
Second kind is knock pin type star-wheel loader two axle assembly free wheel devicees (as shown in Figure 2), and this clutch is provided with two pressure spring 2B at the end of two ejector pin 1B, comes list to each roller 3B of single pretension, and the work synchronism is good.This clutch solves the problem of the accuracy of manufacturing difficulty of the former isolating frame, as long as the former is more reasonable relatively from the locking angle this structure reasonable in design, but drawback is
1, the high low precision in the center of each working surface of star-wheel is no more than 0.025mm, and quality is restive when existing processing method is produced in batches.
2, in frequent clutch work, roller 3B often impacts ejector pin 1B, oil can not in time discharge in the ejector pin 1B hole, cause ejector pin 1B end injured, again be exactly spring eye on the star-wheel and the cooperation of ejector pin 1B be sliding fit, gap that can not be excessive, if loading machine gearbox is oily dirty, just be easy to the carbon slag in the oil is brought into the receiving hole of spring, and be not easy out, increase severely day by day, finally caused spring to be pushed and block by the carbon slag, make each roller 3B effectively pretension between two raceways and two inefficacies.
The third is two retainer wedge block type loader two axle assembly free wheel devicees (as shown in Figure 3), its working principle be by the shell fragment on the ccontaining window of each voussoir 2C on the spring band 1C with the single pretension to list of each voussoir 2C on the ring raceway of Internal and external cycle, be that the frictional force that speed difference produced by inside and outside raceway drives self being rotated between two raceways to long axis direction by short-axis direction of voussoir 2C and uprises and combination, otherwise and separate, number to voussoir 2C can be provided with 44 voussoir 2C in the space identical with the above two, this kind structure has solved the problem of preceding first kind of asynchronous and second kind of spring receiving hole carbon distribution, and moment of torsion can be bigger than the above two, but its drawback is
1, the little genus line contact of working surface: because this structure is to work with separating with two raceway combinations by special-shaped voussoir 2C, the working surface of voussoir 2C only touches two lines of inside and outside raceway, though 44 voussoir 2C are set, the little genus line contact of working surface, Line of contact was as long as the wearing and tearing clutch just lost efficacy.
2, fast idle voussoir working surface weares and teares easily: input shaft voussoir 2C when fast idle can not self rotate, and does sliding friction because the working surface of the pretightening force voussoir 2C of spring is close on the input shaft raceway, is easy to the working surface wearing and tearing with voussoir 2C.
3, heavy duty is skidded: this structure is for solving the working surface wearing and tearing of last problem minimizing voussoir 2C, so the shell fragment elastic force on the spring band is reduced, just the pretightening force to voussoir 2C reduces, but only is useful in the work of loader underloading.If loader is when working environment is relatively badly heavily loaded, it is not enough in the power that rolls on by pretension that violent vibration will reduce voussoir 2C because of shell fragment elastic force, causes the frequent disengaging of voussoir 2C and combine just " work of skidding ".Voussoir 2C lost efficacy with regard to easier wearing and tearing, summed up this structure and was not suitable in the high and heavily loaded operating mode of idling speed.
The model utility content
The purpose of this utility model is to provide that a kind of synchronism is good, bearing torque is high, resistance to wears, antifatigue, no oil cylinder effect, do not tie carbon, anti-high rotating speed, external star-wheel type loader two axle assembly free wheel devicees that the out star wheel precision is high.
For achieving the above object, technical solution of the present utility model is:
The utility model is a kind of external star-wheel type loader two axle assembly free wheel devicees, and it is made up of extraterrestrial wheel rim, retainer, elastic element, roller and circlip; Described retainer is nested with in the out star wheel circle, the circlip holding in the out star wheel circle and its interior edge face and retainer exterior edge face lean; Outer raceway working surface on the described extraterrestrial wheel rim is a wedge surface from high to low; Circumference is provided with a plurality of isolation window in the outer peripheral surface upper edge of retainer, one side of isolation window is a semi-cylindrical, this semi-cylindrical has constituted the working surface of interior raceway, underside portion near the semi-cylindrical place inwardly connects, constitute the holding cavity of roller, the opposite side of isolation window is the holding cavity of elastic element; Described roller be nested with in this roller holding cavity and be clamped at the interior raceway of extraterrestrial wheel rim and the outer raceway of inner ring between, perforation place of the extended isolation window of part cylinder of roller and contacting with inner ring; Described elastic element is installed in the holding cavity of elastic element, and the one end leans at roller, pushes roller to working surface.
Described retainer outer peripheral surface is provided with 24-30 isolation window, all is equipped with roller and elastic element in each isolation window.
Described elastic element is a M type shell fragment.
After adopting such scheme, the utlity model has following advantage:
1, synchronism is good.Because it is single good to its synchronism of pretension of roller to single shell fragment to adopt.
2, bearing torque height.24-30 roller can be placed in equal space.
3, resistance to wear.Adopt roller construction, its working surface is the whole periphery of roller, and wedge block type line contact working surface wearing and tearing capacity is big tens times relatively.Just why internal authority (German Stieber) also adheres to using the reason of roller construction so far at severe duty.
4, anti-high rotating speed, spring etc. just are not easy fatigue.As can be seen from Figure, the interior raceway of this structure is circular, and it is sliding/friction that interior raceway contacts with roller.When the input shaft high speed rotating, the input shaft raceway need not be with roller, spring rotation, and spring just is not easy fatigue.Smooth rotation, it is little to rub, and is not easy heating.
5, out star wheel precision height.This out star wheel has adopted up-to-date processing method, has guaranteed that the high precision of each working surface decentre is no more than 0.025mm, and roller is stressed evenly, and moment of torsion is just big naturally, and working life is just long.
6, adopt M matrix formula spring, antifatigue, no oil cylinder effect, do not tie carbon.
7, the utility model also can be applicable to engineering machinery, mining machinery, fitness equipments, vehicle arrangement, gearbox etc.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is that the band of commonly using is isolated posture star-wheel free wheel device structural representation;
Fig. 2 is the knock pin type star-wheel free wheel device structural representation of commonly using;
Fig. 3 is two retainer Wedge type over running clutch structural representations of commonly using;
Fig. 4 is a three-dimensional exploded view of the present utility model;
Fig. 5 is the partial sectional view after the utility model assembling;
Fig. 6 is the utility model scheme of installation.
Embodiment
As shown in Figure 4, the utility model is a kind of external star-wheel type loader two axle assembly free wheel devicees, and it is made up of extraterrestrial wheel rim 1, retainer 2, elastic element 3, roller 4 and circlip 5.Described retainer 2 is nested with in out star wheel circle 1, and circlip card 5 is put in out star wheel circle 1, and circlip card 5 interior edge faces and retainer 2 exterior edge faces lean, and prevents that retainer 2 from deviating from extraterrestrial wheel rim 1; Interior raceway 11 working surfaces on the described extraterrestrial wheel rim 1 are wedge surface from high to low; Circumference is provided with 24-30 isolation window 21 in the outer peripheral surface upper edge of retainer 2, in each isolation window 21, all be equipped with roller 4 and elastic element 3, one side of isolation window 21 is semi-cylindrical 211 (with reference to figure 5), this semi-cylindrical 211 has constituted the working surface 211 of interior raceway, underside portion near semi-cylindrical 211 places inwardly connects, and forms a through hole 212, and this part constitutes the holding cavity of roller 4, the opposite side of isolation window 21 is a rectangular cavity 213, constitutes the holding cavity of elastic element 3; Described roller 4 be nested with in this roller holding cavity and be clamped at the interior raceway 11 of extraterrestrial wheel rim 1 and the outer raceway of inner ring 6 between, perforation through hole 212 places of the extended isolation window 21 of part cylinder of roller 4 and contacting with the outer raceway of inner ring 6; Described elastic element 3 is installed in the holding cavity of elastic element, and the one end leans at roller 4, pushes roller 4 to working surface 211.
Described elastic element 3 is a M type shell fragment 3.
The utility model is as loader two axle assembly free wheel devicees, can be directly the big endoporus of the outer ring gear on loader two axle assemblies be processed into the same a plurality of wedge surfaces of interior raceway with extraterrestrial wheel rim, and just outer ring gear can be extraterrestrial wheel rim.
Fig. 6 has showed the utility model application example.During installation, with retainer 2 of the present utility model be socketed in the affixed inner ring 6 of input shaft 7 on, extraterrestrial wheel rim 1 outer ring is nested with on outer ring gear 8.
Working principle of the present utility model:
The utility model is that interior raceway 11 is designed to 24-30 wedge surface from high to low as working surface, adopt import nylon cages 2 and 24-30 roller 4 and 24-30 M type shell fragment 3 compositions of high-temperature wearable, 3 pairs of rollers 4 of shell fragment be single pretension to list between two raceways, the speed of the inner outer raceway also poor frictional force that produces realizes combination and separates.
Claims (3)
1, a kind of external star-wheel type loader two axle assembly free wheel devicees, it is characterized in that: it is made up of extraterrestrial wheel rim, retainer, elastic element, roller and circlip; Described retainer is nested with in the out star wheel circle, the circlip holding in the out star wheel circle and its interior edge face and retainer exterior edge face lean; Interior raceway working surface on the described extraterrestrial wheel rim is a wedge surface from high to low; Circumference is provided with a plurality of isolation window in the outer peripheral surface upper edge of retainer, one side of isolation window is a semi-cylindrical, this semi-cylindrical has constituted the working surface of interior raceway, underside portion near the semi-cylindrical place inwardly connects, constitute the holding cavity of roller, the opposite side of isolation window is the holding cavity of elastic element; Described roller be nested with in this roller holding cavity and be clamped at the interior raceway of extraterrestrial wheel rim and the outer raceway of inner ring between, perforation place of the extended isolation window of part cylinder of roller and contacting with inner ring; Described elastic element is installed in the holding cavity of elastic element, and the one end leans at roller, pushes roller to working surface.
2, external star-wheel type loader two axle assembly free wheel devicees according to claim 1, it is characterized in that: described retainer outer peripheral surface is provided with a plurality of isolation window, all is equipped with roller and elastic element in each isolation window.
3, external star-wheel type loader two axle assembly free wheel devicees according to claim 1, it is characterized in that: described elastic element is a M type shell fragment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920136325U CN201373042Y (en) | 2009-01-09 | 2009-01-09 | Outer star-wheel type overrunning clutch of loader dual-axis assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920136325U CN201373042Y (en) | 2009-01-09 | 2009-01-09 | Outer star-wheel type overrunning clutch of loader dual-axis assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201373042Y true CN201373042Y (en) | 2009-12-30 |
Family
ID=41499127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920136325U Expired - Fee Related CN201373042Y (en) | 2009-01-09 | 2009-01-09 | Outer star-wheel type overrunning clutch of loader dual-axis assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201373042Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086911A (en) * | 2010-12-14 | 2011-06-08 | 宁波市江北海通汽车配件有限公司 | Friction-type roller overrunning clutch |
| CN104019154A (en) * | 2012-12-10 | 2014-09-03 | 罗伯特·博世有限公司 | Free-wheel clutch |
| CN108895089A (en) * | 2018-09-28 | 2018-11-27 | 林明 | For keeping the load retainer and bearing of the high load depth of parallelism |
-
2009
- 2009-01-09 CN CN200920136325U patent/CN201373042Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086911A (en) * | 2010-12-14 | 2011-06-08 | 宁波市江北海通汽车配件有限公司 | Friction-type roller overrunning clutch |
| CN104019154A (en) * | 2012-12-10 | 2014-09-03 | 罗伯特·博世有限公司 | Free-wheel clutch |
| CN108895089A (en) * | 2018-09-28 | 2018-11-27 | 林明 | For keeping the load retainer and bearing of the high load depth of parallelism |
| WO2020063467A1 (en) * | 2018-09-28 | 2020-04-02 | 林明 | Load holder for keeping high load parallelism and bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20130109 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |