CN201180748Y - Overrun clutch assembly of belt roller - Google Patents
Overrun clutch assembly of belt roller Download PDFInfo
- Publication number
- CN201180748Y CN201180748Y CNU2008200049501U CN200820004950U CN201180748Y CN 201180748 Y CN201180748 Y CN 201180748Y CN U2008200049501 U CNU2008200049501 U CN U2008200049501U CN 200820004950 U CN200820004950 U CN 200820004950U CN 201180748 Y CN201180748 Y CN 201180748Y
- Authority
- CN
- China
- Prior art keywords
- inner ring
- belt pulley
- cam
- combination
- clutch assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a belt-pulley overrunning-clutch assembly, which is used for a head-feed dual-purpose combine for rice and wheat, and includes a belt pulley and an inner ring. The outside of the inner ring is sleeved with the belt pulley, an overrunning clutch device, a cover plate, a snap spring and a sealing ring are axially and sequentially arranged in a space nipped by the belt pulley and the inner ring; the overrunning clutch device includes a plurality of cam rollers and a plurality of cylindrical rollers, every three cam rollers are arranged sequentially to form a combination A, every two cam rollers are arranged sequentially to form a combination B, two combinations A and the plurality of combination B are oppositely arranged and uniformly distributed on the outer circumference surface of the inner ring; and one cylindrical roller is arranged between each order of the cam roller combination. The belt-pulley overrunning-clutch assembly is simple in structure, the combination of the clutch can be realized by rotating the cam rollers at a certain angle, and the belt-pulley overrunning-clutch assembly has the advantages of small friction, high temperature resistance and long service life; in addition, the contact of the cam rollers and the inner ring as well as the belt pulley is surface contact, so that a larger torque can be provided, and the capability of taking up load is large.
Description
Technical field
The utility model relates to the dual-purpose reaper of a kind of semi-feeding rice and wheat, particularly relates to the dual-purpose reaper of a kind of semi-feeding rice and wheat belt pulley overdrive clutch assembly.
Background technique
The dual-purpose reaper clutch assembly of existing semi-feeding rice and wheat, complex structure, bearing capacity is little, and owing to work under bad environment, it is bigger to wear and tear simultaneously, and working life is short.Clutch assembly is in case damage must all be changed, and some intact parts are also discarded in the lump, caused the waste on the material resources.
The model utility content
Technical problem to be solved in the utility model provides a kind of belt pulley overdrive clutch assembly, and it is simple in structure, and it is little to overcome existing clutch assembly bearing capacity, the defective that working life is short.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopted provides a kind of belt pulley overdrive clutch assembly, and it comprises belt pulley and inner ring, and described inner ring is provided with keyway, and transmission shaft connects with inner ring by pin key.Described belt pulley is set in outside the inner ring, and belt pulley and inner ring are provided with overdrive clutch device, cover plate, jump ring and seal ring in the folded space vertically successively.Described overdrive clutch device comprises several cam bawls and some cylindrical rollers, per three cam bawls are arranged in order and form combination A, per two cam bawls are arranged in order and form combination B, two combination A that are oppositely arranged make up B along the uniform arrangement of inner ring outer peripheral surface with several, and are provided with a cylindrical roller between every grade of cam bawl combination./ 4th of a cam bawl cross section is the circular arc that has the same curvature radius with belt pulley axis hole internal diameter, its two ends and all the other circular arc smooth transition; The camming surface of all cam bawls is towards the Pulley shaft internal surface of hole; Be provided with lubricating grease between cylindrical roller, cam bawl and belt pulley and the inner ring.
As improvement of the present utility model, the two ends of described cam bawl are respectively equipped with the semiaxis that contacts with the belt pulley inwall, the internal diameter of spring ring is separately positioned on the inner ring two ends greater than the external diameter of belt pulley inner ring, and contacts with the planar section of the semiaxis at cam bawl two ends.
The utility model adopts cylindrical roller and cam bawl to realize the free wheel device function, and the outer surface of inner ring is the cylndrical surface, and star cam different from the past is therefore simple in structure, easy processing; Cam bawl rotates to an angle and can realize the combination of clutch, makes circumference hardly and rolls, therefore rub little, high temperature resistant, the life-span is long; In addition, the cam bawl cross section 1/4th for having the circular arc of same curvature radius with belt pulley axis hole internal diameter, so it is that face contacts with contacting of inner ring and belt pulley, so bigger moment of torsion can be provided, it is big to bear load capacity.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that the A of Fig. 1 is to the broken section enlarged view;
Fig. 3 is the utility model cam bawl plan view;
Fig. 4 is the B-B sectional drawing of Fig. 3.
Embodiment
Below in conjunction with accompanying drawing the utility model is made detailed explanation.
As shown in Figure 1, the utility model comprises belt pulley 1 and inner ring 5, described inner ring 5 is provided with keyway, transmission shaft connects with inner ring 5 by pin key, described belt pulley 1 is set in outside the inner ring 5, and belt pulley 1 and inner ring 5 are provided with overdrive clutch device, cover plate 3, jump ring 2 and seal ring 4 in the folded space vertically successively; Described overdrive clutch device comprises several cam bawls 8 and some cylindrical rollers 7, per three cam bawls 8 are arranged in order and form combination A, per two cam bawls 7 are arranged in order and form combination B, two combination A that are oppositely arranged make up B along the uniform arrangement of the outer peripheral surface of inner ring 5 with several, and are provided with a cylindrical roller 7 between every grade of cam bawl combination.The cross section of cam bawl 8 1/4th for to have circular arc, its two ends and all the other circular arc smooth transition of same curvature radius with belt pulley axis hole internal diameter.The camming surface of all cam bawls 8 is towards the internal surface of belt pulley axis hole; Be provided with lubricating grease between cylindrical roller 7, cam bawl 8 and belt pulley 1 and the inner ring 5.
Preferably, the two ends of described cam bawl 8 are respectively equipped with the semiaxis that contacts with the belt pulley inwall, the internal diameter of spring ring 6 is greater than the external diameter of inner ring 5, be separately positioned on the two ends of inner ring 5, and contact with the planar section of the semiaxis at cam bawl 8 two ends, be adjacent to the shaft hole inner wall of belt pulley to guarantee cam bawl 8.
During work, transmission shaft drives inner ring 5 rotations of belt pulley overdrive clutch assembly, and when shaft speed was low, the cam bawl 8 between inner ring 5 and the belt pulley 1 did not change substantially, and inner ring 5 is with cylindrical roller 7 idle running; When transmission shaft reaches certain speed, the frictional force of 5 pairs of cam bawls 8 of inner ring increases, make it around the certain angle of self rotational, so cam bawl 8 is stuck between the shaft hole inner wall of inner ring 5 and belt pulley 1, thereby driving belt pulley 1 rotates, since the cross section of cam bawl 8 1/4th for having the circular arc of same curvature radius with belt pulley axis hole internal diameter, so its contacting of axis hole with belt pulley 1 is that face contacts, and can provide than the bigger moment of torsion of traditional cylindrical roller line way of contact.
The utility model is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technological scheme, all fall within the protection domain of the present utility model.
Claims (4)
1, a kind of belt pulley overdrive clutch assembly, it is characterized in that it comprises belt pulley and inner ring, inner ring is provided with keyway, transmission shaft connects with inner ring by pin key, belt pulley is set in outside the inner ring, and itself and inner ring are provided with overdrive clutch device, cover plate, jump ring and seal ring in the folded space vertically successively.
2, belt pulley overdrive clutch assembly according to claim 1, it is characterized in that described overdrive clutch device comprises several cam bawls and some cylindrical rollers, per three cam bawls are arranged in order and form combination A, per two cam bawls are arranged in order and form combination B, two combination A that are oppositely arranged make up B along the uniform arrangement of inner ring outer peripheral surface with several, and are provided with a cylindrical roller between every grade of cam bawl combination.
3, belt pulley overdrive clutch assembly according to claim 2 is characterized in that 1/4th of described cam bawl cross section is the circular arc that has the same curvature radius with belt pulley axis hole internal diameter, its two ends and all the other circular arc smooth transition; The camming surface of all cam bawls is towards the Pulley shaft internal surface of hole; Be provided with lubricating grease between cylindrical roller, cam bawl and belt pulley and the inner ring.
4, belt pulley overdrive clutch assembly according to claim 3, it is characterized in that it also comprises two annular elastomeric spring coils, the two ends of described cam bawl are respectively equipped with the semiaxis that contacts with the belt pulley inwall, the internal diameter of spring ring is greater than the external diameter of belt pulley inner ring, be separately positioned on the inner ring two ends, and contact with the planar section of the semiaxis at cam bawl two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200049501U CN201180748Y (en) | 2008-03-17 | 2008-03-17 | Overrun clutch assembly of belt roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200049501U CN201180748Y (en) | 2008-03-17 | 2008-03-17 | Overrun clutch assembly of belt roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201180748Y true CN201180748Y (en) | 2009-01-14 |
Family
ID=40250247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200049501U Expired - Fee Related CN201180748Y (en) | 2008-03-17 | 2008-03-17 | Overrun clutch assembly of belt roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201180748Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758907A (en) * | 2011-04-27 | 2012-10-31 | 武汉集信传动技术有限公司 | Spring shrinkage exceeding belt pulley structure |
-
2008
- 2008-03-17 CN CNU2008200049501U patent/CN201180748Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758907A (en) * | 2011-04-27 | 2012-10-31 | 武汉集信传动技术有限公司 | Spring shrinkage exceeding belt pulley structure |
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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: 20090114 Termination date: 20110317 |