CN107830117B - Speed-increasing reversing box with reversing overrunning function - Google Patents
Speed-increasing reversing box with reversing overrunning function Download PDFInfo
- Publication number
- CN107830117B CN107830117B CN201711251009.XA CN201711251009A CN107830117B CN 107830117 B CN107830117 B CN 107830117B CN 201711251009 A CN201711251009 A CN 201711251009A CN 107830117 B CN107830117 B CN 107830117B
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- China
- Prior art keywords
- wedge block
- wedge
- output shaft
- sickle
- return spring
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- 239000007787 solid Substances 0.000 claims description 2
- 239000002689 soil Substances 0.000 description 9
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 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
- 230000008569 process Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/14—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising conical gears only
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/063—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by moving along the inner and the outer surface without pivoting or rolling, e.g. sliding wedges
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Harvester Elements (AREA)
- Gear Transmission (AREA)
Abstract
The invention provides a speed-increasing reversing box with a reversing overrunning function, when a tractor backs, the power output power of the tractor can be overrun and interrupted through the speed-increasing reversing gearbox, so that the damage of a blade of an agricultural implement caused by the overrunning of the speed-increasing reversing gearbox is avoided.
Description
Technical Field
The invention relates to the field of mechanical transmission in agricultural machinery, in particular to a speed-increasing reversing box with a reverse overrunning function.
Background
The agricultural implement is a machine for finishing the field, the soil is turned over to the ground in the finishing field, the agricultural implement is required to be driven to operate by a tractor, and the power output of the widely applied tractor is rigidly and directly connected to the agricultural implement in a transmission connection mode, wherein an input shaft is led out from a driving wheel of the tractor and the agricultural implement is mechanically transmitted. In the process of turning over soil for the ground, the soil turning blades of the agricultural implement turn over the ground in the soil, when the tractor needs to turn around or reverse, the agricultural implement needs to be lifted and the soil turning blades of the agricultural implement are separated from the soil, then turning around or reverse is performed, otherwise, when the soil turning blades of the agricultural implement reverse in the soil, the rotation direction of the input shaft is kept unchanged, and the agricultural implement is not completely separated from the soil, and the forward and reverse rotation interference is caused, so that the agricultural implement is driven. If the farm machinery is lifted up to the tractor for reversing, the reversing time can be delayed, and the working efficiency is reduced.
Disclosure of Invention
The invention solves the problem of designing a speed-increasing reversing box with a reversing and overrunning function, and when a tractor backs, the power output power of the tractor can be interrupted by overrunning of the speed-increasing reversing box, so that the damage of a blade of an agricultural implement caused by knife striking is avoided.
The utility model provides a speed-increasing reversing box with reverse surpassing function, includes input shaft and output shaft the solid cover in top of input shaft has initiative conical gear the middle part cover of output shaft is equipped with driven conical gear, initiative conical gear with driven conical gear meshing, its characterized in that: the driven conical gear is in running fit with the output shaft, a reverse overrun clutch structure is arranged on a raceway between the driven conical gear and the output shaft, the reverse overrun clutch structure comprises a strip-shaped wedge block and a return spring, the top surface of the wedge block is an outer arc surface, the bottom surface of the wedge block is a plane, the front end surface of the wedge block is an inclined plane, the rear end surface of the wedge block is an upper inclined plane and a lower inclined plane which are intersected in a V shape, at least three wedge block accommodating grooves are uniformly formed in the raceway of the output shaft, the wedge blocks are all placed in the wedge block accommodating grooves, the arc top surface of the wedge block coincides with the circumferential surface of the raceway of the output shaft, the return spring is embedded in the groove bottom surface of the wedge block accommodating groove at a position corresponding to the end part of the rear end of the wedge block, and the outer end of the return spring is abutted against the wedge block;
Sickle-shaped notches are uniformly formed in the circumferential surface of the driven bevel gear raceway, the cutter handle surface of the sickle-shaped notch is an inner arc surface, and the blade surface of the sickle-shaped notch is a plane; after the rear end part of the wedge block is ejected out of the wedge block accommodating groove by the return spring, the knife handle surface of the sickle-shaped notch is overlapped with the top surface of the wedge block, and the blade surface of the sickle-shaped notch is attached to the upper inclined surface of the rear end surface of the wedge block; in addition, the inclined surface of the wedge front end surface is attached to the groove wall of the wedge accommodating groove.
To better implement the present invention, it may be further: the blade surface of the sickle-shaped notch is perpendicular to the tangential surface of the circumferential surface of the driven bevel gear raceway, so that the torque bearable by the wedge block and the sickle-shaped notch after being matched is maximum.
The invention has the beneficial effects that: the invention changes the matching relation between the original power output shaft and the driven bevel gear, and sets a reverse overrunning structure with simple structure between the power output shaft and the driven bevel gear, so that the output shaft and the driven bevel gear can only rotate in a one-way matching way, the phenomenon that the driven gear wheel and the gear on the input shaft strike a knife after the output shaft turns over is avoided, and under the action of the invention, the tractor is enabled to drive the farm machinery to work, the operation is simple and the working efficiency is improved; the wedge block, the wedge block accommodating groove and the sickle-shaped notch in the reverse overrunning structure are matched, so that the structure can bear larger torque and is not easy to damage.
Drawings
FIG. 1 shows an overall construction of the present invention;
FIG. 2 shows a schematic structural view of an output shaft according to the present invention;
FIG. 3 is a diagram showing the assembly of the output shaft and wedge in accordance with the present invention;
FIG. 4 is a cross-sectional view of the assembled output shaft and wedge of the present invention;
FIG. 5 shows an assembled construction of an output shaft and driven bevel gear of the present invention;
FIG. 6 is a cross-sectional view of the present invention showing a first condition of the output shaft assembled with the driven bevel gear;
FIG. 7 is a cross-sectional structural view showing a second state of the present invention after the output shaft is assembled with the driven bevel gear;
fig. 8 shows a cross-sectional view of the wedge of the present invention.
In the figure, 1, an input shaft; 2. a driving bevel gear; 3. a driven bevel gear; 4. a reverse overrunning clutch structure; 41. wedge block accommodating grooves; 42. wedge blocks; 421. the top surface of the wedge block; 422. the rear end surface of the wedge block is a V-shaped upper inclined plane; 423. the rear end of the wedge block is a lower inclined plane in a V shape; 424. the bottom surface of the wedge block; 425. the front end face of the wedge block; 43. a return spring; 44. sickle-shaped notch; 5. an output shaft.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the overall structure of the speed-increasing reversing box with the reverse overrunning function comprises an input shaft 1 and an output shaft 5, wherein a driving bevel gear 2 is fixedly sleeved at the top end of the input shaft 1, a driven bevel gear 3 is sleeved at the middle part of the output shaft 5, and the driving bevel gear 2 is meshed with the driven bevel gear 3, and the speed-increasing reversing box is characterized in that: the driven conical gear 3 is in running fit with the output shaft 5, a reverse overrunning clutch structure 4 is arranged on a raceway between the driven conical gear 3 and the output shaft 5, as can be seen from fig. 2 to 5 and 8, the reverse overrunning clutch structure 4 comprises a strip-shaped wedge block 42 and a return spring 43, as can be seen from fig. 8, the top surface 421 of the wedge block 42 is an outer arc surface, the bottom surface 424 of the wedge block 42 is a plane, the front end surface 425 of the wedge block 42 is an inclined plane, the rear end surface of the wedge block 42 is an upper inclined plane 422/423 and a lower inclined plane 422 which are intersected in a V shape, at least three wedge block accommodating grooves 41 are uniformly arranged on the raceway of the output shaft 5, the wedge block 42 is arranged in each wedge block accommodating groove 41, the arc top surface of the wedge block 42 coincides with the circumferential surface of the raceway of the output shaft 5, the return spring 43 is embedded in a position corresponding to the rear end part of the wedge block 42 in the groove bottom surface of the accommodating groove 41, and the outer end of the return spring 43 abuts against the wedge block 42;
sickle-shaped notches 44 are uniformly formed in the circumferential surface of the roller path of the driven bevel gear 3, the cutter handle surface of the sickle-shaped notch 44 is an inner arc surface, and the blade surface of the sickle-shaped notch 44 is a plane; as shown in fig. 6, when the rear end of the wedge 42 is pushed out of the wedge accommodating groove 41 by the return spring 43, the shank surface of the sickle-shaped notch 44 coincides with the top surface of the wedge 42, and the blade surface of the sickle-shaped notch 44 coincides with the upper inclined surface of the rear end surface of the wedge 42; the inclined surface of the front end surface of the wedge 42 is bonded to the groove wall of the wedge accommodating groove 41. At this time, the blade surface of the sickle-shaped notch 44 is perpendicular to the tangential plane of the circumferential surface of the raceway of the driven bevel gear 3, so that the torque that can be born after the wedge 42 and the sickle-shaped notch 44 are matched is maximum. Fig. 7 shows the driven bevel gear 3 in reverse overrunning engagement with the output shaft 5, as seen by the return spring 43 being compressed by the wedge 42, the wedge 42 being fully received in the wedge receiving groove 41 with the top surface of the wedge 42 flush with the notch of the wedge receiving groove 41.
The invention has the beneficial effects that: the invention changes the matching relation between the original power output shaft 5 and the driven conical gear 3, and sets a reverse overrunning clutch structure with simple structure between the two, so that the output shaft 5 and the driven conical gear 3 can only rotate in a one-way matching way, and the phenomenon that the driven conical gear 3 and the gear on the input shaft 1 strike a knife after the output shaft turns over is avoided, and under the action of the invention, the tractor is enabled to drive the farm machinery to work while the operation is simple; the cooperation of the wedge 42, the wedge accommodating groove 41 and the sickle-shaped notch 44 in the reverse overrunning structure enables the structure to bear larger torque and not be damaged easily.
The invention works in such a way that the input shaft 1 is connected with the power output part of the tractor, the farm machinery is driven by the output shaft 5 to operate, when the farm machinery works normally, the wedge 42 is pushed out of the wedge accommodating groove 41 by the return spring 43 spring and then is clamped with the sickle-shaped notch 44, and the output shaft 5 and the driven bevel gear 3 operate synchronously; when the agricultural implement runs reversely, namely the output shaft 5 runs reversely, the wedge block 42 is completely accommodated in the wedge block accommodating groove 41, as shown in fig. 7, the output shaft 1 and the driven conical gear 3 are in a reverse overrunning state, and the output shaft 5 is separated from the driving action of the driven conical gear 3, so that the situation that the driven conical gear 3 and the driving conical gear 2 are matched with each other to avoid gear rattle caused by reverse rotation is ensured.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The utility model provides a speed-increasing reversing box with reverse surpassing function, includes input shaft and output shaft the solid cover in top of input shaft has initiative conical gear the middle part cover of output shaft is equipped with driven conical gear, initiative conical gear with driven conical gear meshing, its characterized in that: the driven conical gear is in running fit with the output shaft, a reverse overrunning clutch structure is arranged on a raceway between the driven conical gear and the output shaft, the reverse overrunning clutch structure comprises a strip-shaped wedge block and a return spring, the top surface of the wedge block is an outer arc surface, the bottom surface of the wedge block is a plane, the front end surface of the wedge block is an inclined plane, the rear end surface of the wedge block is an upper inclined plane and a lower inclined plane which are intersected in a V shape, at least three wedge block accommodating grooves are uniformly formed in the raceway of the output shaft, the wedge blocks are all arranged in the wedge block accommodating grooves, the arc top surface of the wedge block coincides with the circumferential surface of the raceway of the output shaft, the return spring is embedded in the groove bottom surface of the wedge block accommodating groove at a position corresponding to the end part of the rear end of the wedge block, the outer end of the return spring is abutted to the wedge block, the return spring is compressed, and is completely accommodated in the wedge block accommodating groove, and at the moment, the top surface of the wedge block is flush with the notch of the wedge block accommodating groove;
Sickle-shaped notches are uniformly formed in the circumferential surface of the driven bevel gear raceway, the cutter handle surface of the sickle-shaped notch is an inner arc surface, and the blade surface of the sickle-shaped notch is a plane; the wedge is ejected out of the wedge accommodating groove by the return spring and then is clamped with the sickle-shaped notch, the output shaft and the driven bevel gear synchronously run, and when the rear end part of the wedge is ejected out of the wedge accommodating groove by the return spring, the knife handle surface of the sickle-shaped notch coincides with the top surface of the wedge, and the blade surface of the sickle-shaped notch coincides with the upper inclined surface of the rear end surface of the wedge; in addition, the inclined surface of the front end surface of the wedge block is attached to the groove wall of the wedge block accommodating groove; the blade surface of the sickle-shaped notch is perpendicular to the tangential surface of the circumferential surface of the driven bevel gear raceway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711251009.XA CN107830117B (en) | 2017-12-01 | 2017-12-01 | Speed-increasing reversing box with reversing overrunning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711251009.XA CN107830117B (en) | 2017-12-01 | 2017-12-01 | Speed-increasing reversing box with reversing overrunning function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107830117A CN107830117A (en) | 2018-03-23 |
| CN107830117B true CN107830117B (en) | 2024-05-28 |
Family
ID=61647311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711251009.XA Active CN107830117B (en) | 2017-12-01 | 2017-12-01 | Speed-increasing reversing box with reversing overrunning function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107830117B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984003A (en) * | 2019-12-18 | 2021-06-18 | 重庆隆鑫通航发动机制造有限公司 | Wedge type overload protection transmission device and engine |
| CN113374832A (en) * | 2021-06-09 | 2021-09-10 | 福州荣林机械有限公司 | Anti-reverse gearbox of agricultural machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5690202A (en) * | 1996-04-15 | 1997-11-25 | Myers; John E. | Overrunning clutch mechanism |
| CN202360701U (en) * | 2011-12-05 | 2012-08-01 | 淮阴工学院 | Speed change transmission route for walking and rice transplanting of high-speed rice transplanting machine |
| CN207750449U (en) * | 2017-12-01 | 2018-08-21 | 河南新航航空设备科技有限公司 | A kind of speedup reversing box with reversion transcendent function |
-
2017
- 2017-12-01 CN CN201711251009.XA patent/CN107830117B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5690202A (en) * | 1996-04-15 | 1997-11-25 | Myers; John E. | Overrunning clutch mechanism |
| CN202360701U (en) * | 2011-12-05 | 2012-08-01 | 淮阴工学院 | Speed change transmission route for walking and rice transplanting of high-speed rice transplanting machine |
| CN207750449U (en) * | 2017-12-01 | 2018-08-21 | 河南新航航空设备科技有限公司 | A kind of speedup reversing box with reversion transcendent function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107830117A (en) | 2018-03-23 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180613 Address after: No. 5, Jian north two road, Makino District, Xinxiang, Henan Applicant after: HENAN XINHANG AVIATION EQUIPMENT TECHNOLOGY Co.,Ltd. Address before: 453000 Henan Xinxiang Makino District Jianshe Road middle 134 Factory West Applicant before: XINXIANG YUXIN AVIATION INDUSTRY Co.,Ltd. |
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| GR01 | Patent grant |