CN210739186U - Wear-resistant ratchet clutch - Google Patents
Wear-resistant ratchet clutch Download PDFInfo
- Publication number
- CN210739186U CN210739186U CN201921127817.XU CN201921127817U CN210739186U CN 210739186 U CN210739186 U CN 210739186U CN 201921127817 U CN201921127817 U CN 201921127817U CN 210739186 U CN210739186 U CN 210739186U
- Authority
- CN
- China
- Prior art keywords
- pawl
- ratchet
- slot
- inner ring
- wear
- 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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- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 230000007704 transition Effects 0.000 claims abstract description 3
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Mechanical Operated Clutches (AREA)
Abstract
The utility model belongs to the technical field of clutches, in particular to a wear-resistant ratchet clutch, which comprises an inner ring, a ratchet outside the inner ring, a plurality of pawls, the pawls are embedded in pawl grooves on the outer peripheral surface of the inner ring, the front ends of the pawls extend to ratchet grooves arranged on the inner peripheral surface of the ratchet, the rear ends of the pawls are in rotatable fit with the pawl grooves, the included angle between the front end surface of each pawl and the vertical direction is 0-30 degrees, the included angle between the outer side surface of each pawl far away from the inner ring and the front end surface of each pawl is less than 90 degrees, the joint between the front end surface of each pawl and the outer side surface of each pawl is in transition through a fillet structure, the front end of each pawl is provided with a rotatable sliding column at the rear part of the fillet structure, the outer peripheral surface of each sliding column protrudes out of the fillet structure by 0.5-1mm, a chute in rotatable fit, the surface of traveller is equipped with the multichannel oil groove, and pawl department is more stand wear and tear, has longer life, reduces the clutch fault rate.
Description
Technical Field
The utility model belongs to the technical field of the clutch, concretely relates to ratchet clutch that stands wear and tear.
Background
The overrunning clutch is a basic component which appears along with the development of mechatronics products, and is an important part for power transmission and separation functions between a prime mover and a working machine or between a driving shaft and a driven shaft in the machine. It is a device with self-clutch function by using speed change of driving and driven parts or change of rotation direction. Ratchet pawl one-way clutches are one form of an engaged overrunning clutch. The ratchet assembly mainly comprises a ratchet wheel, an inner ring on the inner side of the ratchet wheel and a pawl assembly arranged between the ratchet wheel and the inner ring, wherein the pawl assembly comprises a pawl and an elastic piece for supporting the pawl. The pawl inlays to be established in the outer peripheral face department of inner circle to keep the mobility, realize locking, the surmounting between inner circle and ratchet through the cooperation of pawl and ratchet inner wall, consequently, the wear resistance of pawl has the influence of comparison to the life of clutch, current ratchet clutch, pawl and ratchet cooperation department direct contact, in use, the pawl is worn and torn gradually, appearance, size change cause the clutch sensitivity to descend, the inefficacy, consequently, the problem that improves the pawl wearability is awaited for urgent need to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to above-mentioned defect, provide a ratchet clutch that stands wear and tear, pawl department is more stand wear and tear, has longer life, reduces the clutch fault rate.
The utility model provides a technical scheme that its technical problem adopted as follows:
a wear-resistant ratchet clutch comprises an inner ring, a ratchet outside the inner ring, and a plurality of pawls embedded in pawl grooves on the outer circumferential surface of the inner ring, wherein the front ends of the pawls extend to ratchet grooves on the inner circumferential surface of the ratchet, the rear ends of the pawls are rotatably matched with the pawl grooves, the angle between the front end face of the pawl and the vertical direction is 0-30 degrees, the angle between the outer side face of the pawl far away from the inner ring and the front end face of the pawl is smaller than 90 degrees, the joint of the front end face of the pawl and the outer side face of the pawl is in transition through a round angle structure, the front end of the pawl is provided with a rotatable sliding column at the rear part of the round angle structure, the outer peripheral face of the sliding column protrudes out of the round angle structure by 0.5-1mm, a sliding groove in rotatable fit with the sliding column is arranged at the corresponding part on the pawl, the front end of the pawl is provided with an oil hole which extends from the inner side face of.
Furthermore, the oil groove is of a conical structure with a large opening and a small groove bottom.
Furthermore, a pin shaft which is rotatably matched with the sliding groove is arranged at the axis of the sliding column.
Furthermore, the oil hole is a taper hole, and the opening of the oil hole on the inner side surface of the pawl is large.
Furthermore, the ratchet groove is of a wedge-shaped structure with one large end and the other small end.
Furthermore, the rear end of the pawl is of a cylindrical structure which is in rotatable fit with the pawl groove, the corresponding pawl groove is of a cylindrical structure, an elastic sheet groove is formed in the inner ring and close to the pawl groove, an elastic sheet which supports the front end of the pawl is arranged in the elastic sheet groove, a matching groove is formed between the elastic sheet groove and the pawl groove, the elastic sheet groove and the pawl groove are of a bilateral symmetry structure about the matching groove, and the inner end of the elastic sheet abuts against the matching groove and the outer end of the elastic sheet extends to the inner side face of the front end of the pawl.
Furthermore, the outer end of the elastic sheet is provided with a matching part which is in annular warping, and the matching part is embedded into a groove arranged on the inner side surface of the front end of the pawl.
The utility model has the advantages that: adopt above-mentioned scheme, optimize the cooperation department of pawl and ratchet, set up rotatable traveller, the effectual wearing and tearing that have slowed down, in long-time the use, the pawl department still keeps the cooperation precision, prolongs the life of clutch, improves the result of use of clutch.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic partial cross-sectional view of a pawl according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a pawl according to an embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of a strut according to an embodiment of the present invention.
FIG. 4 is a schematic cross-sectional view of the elastic sheet according to an embodiment of the present invention
Wherein: 1 is an inner ring, 11 is a pawl groove, 12 is an elastic sheet groove, 13 is a matching groove, 2 is a ratchet wheel, 21 is a ratchet groove, 3 is a pawl, 31 is a sliding groove, 32 is an oil hole, 4 is a sliding column, 41 is an oil groove, and 5 is an elastic sheet.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1-4, a wear-resistant ratchet clutch comprises an inner ring 1, a ratchet 2 outside the inner ring 1, and a plurality of pawls 3, wherein the pawls 3 are embedded in pawl grooves 11 on the outer peripheral surface of the inner ring 1, the front ends of the pawls 3 extend to ratchet grooves 21 on the inner peripheral surface of the ratchet 2, the rear ends of the pawls 3 are rotatably matched with the pawl grooves 11, the front ends of the pawls 3 can swing around the rear ends thereof as a shaft, the front ends of the pawls 3 are matched with the ratchet grooves to realize unidirectional synchronous rotation of the ratchet and the inner ring, the pawls are in overrunning matching in the other direction, the ratchet grooves 21 are in a wedge structure with one large end and the other small end, the included angle between the front end surface of the pawls 3 and the vertical direction is 0-30 degrees, the included angle between the outer side surface of the pawls 3 far away from the inner ring 1 and the front end surface of the pawls is smaller than 90 degrees, so that the front end surface of the pawls is an inclined, the synchronous rotation of the inner ring and the ratchet wheel is realized, the included angle between the front end surface and the vertical direction is 0-30 degrees, effective locking is ensured in the interval, the joint of the front end surface of the pawl 3 and the outer side surface of the pawl 3 is transited through a round angle structure, the rotatable sliding column 4 is arranged at the rear part of the round angle structure at the front end of the pawl 3, the outer peripheral surface of the sliding column 4 protrudes out of the round angle structure by 0.5-1mm, a sliding chute 31 which is rotatably matched with the sliding column 4 is arranged at the corresponding part on the pawl 3, the sliding column 4 is rotatably matched with the sliding chute through a pin shaft at the axis, an oil hole 32 which extends from the inner side surface of the pawl 3 to the sliding chute and is communicated with the sliding chute 31 is arranged at the front end of the pawl 3, the oil hole 31 is a conical hole, the opening of the oil hole 31 at the inner side surface of the pawl is large, the sliding column is contacted with the surface of the ratchet groove, the sliding column rotates, the friction between the pawl and the ratchet groove is greatly slowed down, the abrasion is slowed down, the service life of the pawl and the ratchet groove is prolonged, the sliding column can not deform in long-time use, the matching precision is ensured, and the service life of the clutch is prolonged, because the sliding column is arranged on the outer side of the pawl and is close to the rear part of the fillet structure, when the pawl is locked with the ratchet groove, the interference on the locking is avoided, the locking effect is not influenced, the efficacy of the clutch is fully exerted, in order to further improve the wear resistance and slow down the abrasion, the surface of the sliding column and the surface of the ratchet groove are provided with wear-resistant coatings, the surface of the sliding column is provided with a plurality of oil grooves 41, the oil grooves 41 are of a conical structure with large opening and small groove position, in the rotation, the lubricating oil moves from the oil hole to the sliding groove through the action of the centrifugal force, the sliding column is fully lubricated, an oil film is formed on the surface of the sliding column, so that the wear resistance is improved, the oil hole has a pressure-gathering effect on lubricating oil, sufficient lubrication at the sliding groove is guaranteed, the wear resistance is high, and the service life is prolonged.
The rear end of the pawl 3 is a cylindrical structure which can be rotationally matched with the pawl groove 11, the corresponding pawl groove 11 is a cylindrical structure, so that the pawl has better mobility, a spring sheet groove 12 is arranged on the inner ring 1 near the pawl groove 11, a spring sheet 5 which supports the front end of the pawl 3 is arranged in the spring sheet groove 102, a matching groove 13 is arranged between the spring sheet groove 12 and the pawl groove 11, the spring sheet groove 12 and the pawl groove 11 are of a bilateral symmetry structure about the middle of the matching groove 13, the inner end of the spring sheet 5 is abutted against the matching groove 12, the outer end of the spring sheet 5 extends to the inner side surface of the front end of the pawl, the outer end of the spring sheet 5 is provided with a matching part which is annularly warped, the matching part is embedded into a groove arranged on the inner side surface of the front end of the pawl, the spring sheet carries out floating support on the pawl, so that the pawl always keeps a state of extending in the pawl groove, the, the sensitivity of the pawl reaction is improved, the use effect of the clutch is improved, and the arrangement structure of the elastic sheet groove, the matching groove and the pawl groove enables the center of gravity of the inner ring to be located at the axis, so that the use effect of the clutch is improved.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the techniques of the present invention are substantially any simple modification and equivalent changes to the above embodiments, all falling within the protection scope of the present invention.
Claims (7)
1. A wear-resistant ratchet clutch comprises an inner ring, a ratchet outside the inner ring, and a plurality of pawls embedded in pawl grooves on the outer circumferential surface of the inner ring, wherein the front ends of the pawls extend to ratchet grooves on the inner circumferential surface of the ratchet, the rear ends of the pawls are rotatably matched with the pawl grooves, the novel ratchet wheel is characterized in that the included angle between the front end face of the pawl and the vertical direction is 0-30 degrees, the included angle between the outer side face of the pawl far away from the inner ring and the front end face of the pawl is smaller than 90 degrees, the joint of the front end face of the pawl and the outer side face of the pawl is in transition through a round angle structure, the front end of the pawl is provided with a rotatable sliding column at the rear part of the round angle structure, the outer peripheral face of the sliding column protrudes out of the round angle structure by 0.5-1mm, a sliding groove in rotatable fit with the sliding column is formed in the corresponding position of the pawl, the front end of the pawl is provided with an oil hole which extends.
2. A wear resistant ratchet clutch as set forth in claim 1 wherein said oil sump is of a conical configuration with a large opening and a small bottom.
3. A wear resistant ratchet clutch as set forth in claim 1 wherein the spool has a pin at its center for rotational engagement with the slot.
4. A wear resistant ratchet clutch as set forth in claim 1 wherein said oil port is a tapered bore and the opening of the oil port on the inside surface of the pawl is large.
5. A wear resistant ratchet clutch as set forth in claim 1 wherein said ratchet groove is a wedge configuration with one end large and the other end small.
6. A wear-resistant ratchet clutch according to claim 1, wherein the rear end of the pawl is of a cylindrical structure which is rotatably matched with the pawl slot, the corresponding pawl slot is of a cylindrical structure, a spring plate slot is arranged on the inner ring close to the pawl slot, a spring plate which supports the front end of the pawl is arranged in the spring plate slot, a matching slot is arranged between the spring plate slot and the pawl slot, the spring plate slot and the pawl slot are of a bilateral symmetry structure relative to the matching slot, the inner end of the spring plate abuts against the matching slot, and the outer end of the spring plate extends to the inner side face of the front end of the pawl.
7. A wear-resistant ratchet clutch as claimed in claim 6, wherein the outer end of the resilient plate is provided with an annularly warped engaging portion which is fitted into a recess provided in an inner side surface of the front end of the pawl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921127817.XU CN210739186U (en) | 2019-07-17 | 2019-07-17 | Wear-resistant ratchet clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921127817.XU CN210739186U (en) | 2019-07-17 | 2019-07-17 | Wear-resistant ratchet clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210739186U true CN210739186U (en) | 2020-06-12 |
Family
ID=71004288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921127817.XU Expired - Fee Related CN210739186U (en) | 2019-07-17 | 2019-07-17 | Wear-resistant ratchet clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210739186U (en) |
-
2019
- 2019-07-17 CN CN201921127817.XU patent/CN210739186U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200612 |