CN108061110B - Overrun clutch with power direction switching function through combined rotating speed threshold - Google Patents
Overrun clutch with power direction switching function through combined rotating speed threshold Download PDFInfo
- Publication number
- CN108061110B CN108061110B CN201810003354.XA CN201810003354A CN108061110B CN 108061110 B CN108061110 B CN 108061110B CN 201810003354 A CN201810003354 A CN 201810003354A CN 108061110 B CN108061110 B CN 108061110B
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- overrunning clutch
- clutch
- ring seat
- roller type
- inner ring
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- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
Classifications
-
- 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
- F16D41/064—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls
- F16D41/066—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The invention discloses a combined overrun clutch for switching power directions by rotating speed threshold values, which is formed by assembling two roller overrun clutches side by side. In the initial state, the left roller type overrunning clutch is in a normally combined state, the right roller type overrunning clutch is in a normally separated state, the left roller type overrunning clutch is a common roller type overrunning clutch, the left roller type overrunning clutch is a overrunning clutch combined at a high speed, the power transmission direction of the clutch can be automatically combined with forward power transmission at a low speed according to the change of the driven rotating speed through the combination of the two overrunning clutches, the clutch is disconnected to realize overrunning sliding at a medium speed, the clutch is automatically combined at a high speed, the power is transmitted reversely, and the recovery of redundant energy is facilitated. The structure fully utilizes the advantages of the roller overrunning clutch, so that the power forward transmission, disconnection and reverse transmission processes are combined softly and separated quickly, and the vibration impact and noise are low.
Description
Technical Field
The invention relates to an overrun clutch, in particular to an overrun clutch with a combined rotating speed threshold value for switching power directions, which can realize the function of rotating speed self-adaptive reversing.
Background
When power transmission of mechanical automobiles and other devices is carried out, a mechanism is often required to work in a certain rotating speed range so as to prevent mechanism damage or personnel safety problems caused by overspeed, such as downhill neutral gear of automobiles, damage to an engine caused by the ultra-high speed of a turbocharger and the like. If a mechanism can be developed, the similar assembly can input power from the outside at low speed and output power to the outside at high speed, the running efficiency and the service life of the mechanism can be improved, the energy can be effectively saved, and the economic performance of an automobile can be improved.
The prior patent publication No. CN 105276027A discloses an overrun clutch for master-slave reversing of rotational speed control power, which can realize the function of master-slave reversing of rotational speed control power and can externally input power at low speed and externally output power at high speed. However, the contact surface of the spring and the roller may be blocked due to stress deflection, so that the roller and the inner wall of the outer ring seat cannot be quickly combined and quickly separated, and particularly under the conditions of low relative rotation speed and small centrifugal force, the tensile force of the spring cannot be overcome, the roller and the inner wall of the outer ring seat cannot be quickly combined, the reaction is delayed, and the overrunning clutch cannot fully play a role.
Disclosure of Invention
In order to solve the problem of rapid combination and rapid separation of a spring and a roller, the invention provides an overrunning clutch for switching a power direction by a combined rotating speed threshold.
The design idea of the invention is as follows: a high-speed combined overrun clutch is designed based on the overrun clutch of a rotating speed control power master-slave reversing overrun clutch with the patent publication number of CN 105276027A; the overrunning clutch combined at high speed and the overrunning clutch of the invention are assembled side by adopting a combined design method, so that the function of interrupting or reversely combining the power of the rotation speed control is realized. Namely: when the engine is started at a low speed, the rotating speed of the driving mechanism is higher than that of the driven mechanism, and the common roller overrunning clutch in the combined mechanism is combined to realize that the power is transmitted to the driven mechanism from the driving mechanism; the rotation speed of the driven mechanism is higher than that of the driving mechanism at medium speed, and the overrunning clutch is separated, so that power interruption is realized; when the rotating speed of the driven mechanism is too high and reaches the threshold rotating speed of the high-speed combination clutch part, the overrunning clutch which is combined at high speed is automatically combined, and the power of the driven mechanism is reversely transmitted to the driving mechanism.
The technical scheme of the invention is realized as follows:
the overrunning clutch comprises a left roller overrunning clutch and a right roller overrunning clutch which are installed side by side, wherein the left roller overrunning clutch is in a normally-combined state in an initial state, the right roller overrunning clutch is in a normally-separated state, and the left roller overrunning clutch is a common roller overrunning clutch and is characterized in that:
the left roller type overrunning clutch and the right roller type overrunning clutch share an outer ring seat, and the inner ring seat of the left roller type overrunning clutch is fixedly connected with the inner ring seat of the right roller type overrunning clutch;
the power input is realized from one end of the outer ring seat, which is positioned at the left roller type overrunning clutch; an output shaft is connected with an inner ring seat of the left roller type overrunning clutch, so that power output is realized;
wherein: the right roller type overrunning clutch is an overrunning clutch combined at high speed, and the roller combining and separating device of the right roller type overrunning clutch is different from the prior art, and specifically comprises the following components: the inner ring seat of the right roller overrunning clutch is provided with a plurality of uniformly distributed wedge-shaped structure grooves along the circumferential direction, rollers are arranged in the wedge-shaped structure grooves, the end part of the wide groove of each wedge-shaped structure groove is provided with a radially extending spring accommodating groove, a guide rod is radially fixed in the spring accommodating groove, a compression spring and a flyweight are sleeved on the guide rod, the flyweight is positioned at the inner end of the guide rod, a guide hole is formed in the flyweight, the flyweight is in sliding fit with the guide rod through the guide hole, the flyweight is connected with the rollers through a guide rod, one end of the guide rod is hinged with the flyweight, and the other end of the guide rod is hinged with the rollers;
under the action of centrifugal force, the flyweights overcome the resistance of the compression springs and slide outwards along the guide rods under the condition that the rotating speed of the inner ring seat is larger than that of the outer ring seat, and the rollers are pushed by the guide rods to contact with the inner wall of the outer ring seat so as to realize rapid combination; under the action of the compression spring, the flyweight is positioned at the inner end of the guide rod, and the roller is not in contact with the outer ring seat and is in a separation state; and in a state that the rotating speed of the inner ring seat is smaller than that of the outer ring seat, the rollers and the outer ring seat relatively roll and are in a separation state.
In addition to the above essential technical features, in the implementation process, the following technical features may be provided:
and one input shaft is connected with the outer ring seats of the left roller type overrunning clutch and the right roller type overrunning clutch through bolts, so that power transmission is realized. This construction facilitates manufacturing and assembly.
The inner ring seats of the left roller type overrunning clutch and the right roller type overrunning clutch are an integral structural part; or the inner ring seats of the left roller overrunning clutch and the right roller overrunning clutch are respectively independent parts, and the inner ring seats of the left roller overrunning clutch and the inner ring seats of the right roller overrunning clutch are fixedly connected together through bolts. The expressed structure may vary.
The beneficial effects are that: by changing the roller combination and separation device of the right roller overrunning clutch, under the action of centrifugal force, the flyweights overcome the resistance of the compression springs and slide outwards along the guide rods under the condition that the rotating speed of the inner ring seat is higher than that of the outer ring seat, and the rollers are pushed to contact with the inner wall of the outer ring seat through the guide rods so as to realize rapid combination; under the action of the compression spring, the flyweight is positioned at the inner end of the guide rod, and the roller is not in contact with the outer ring seat and is in a separation state; and in a state that the rotating speed of the inner ring seat is smaller than that of the outer ring seat, the rollers and the outer ring seat relatively roll and are in a separation state.
Through the ingenious combination of two overrunning clutch structures, the power transmission direction of the clutch can realize that the low-speed is automatically combined with forward power transmission according to the change of the driven rotating speed, the clutch is disconnected during medium speed to realize overrunning sliding, and the clutch is automatically combined during high speed to reversely transmit power, so that the recovery of redundant energy is facilitated. The structure fully utilizes the advantages of the roller overrunning clutch, so that the power forward transmission, disconnection and reverse transmission processes are combined softly and separated quickly, and the vibration impact and noise are low. The rotating speed of the power reverse transmission combination in the structure is higher than the rotating speed during separation, and the rotating speed control of the reverse transmission power combination point can be realized by changing the rigidity of the spring, so that the series production is facilitated.
Drawings
Fig. 1 is an axial cut-away view of the present invention.
Fig. 2 is a section view along A-A in fig. 1.
Fig. 3 is a section view taken along line B-B in fig. 1.
Fig. 4 is a section view taken along line C-C in fig. 1.
Fig. 5 is a schematic diagram of an application of the present invention.
The figure shows: 1. an input shaft; 2. a bolt; 3. an outer ring seat; 4. an inner ring seat of the left roller overrunning clutch; 5. the right roller type overrunning clutch inner ring seat; 6. an output shaft; 7. a spring; 8. a spring sleeve; 9. roller I; 10. a second roller; 11. a compression spring; 12. a guide rod; 13. a flyweight; 14. and a guide rod.
Detailed Description
For a further understanding of the structure, features, and acts of the present invention, reference should be made to the following detailed description of the invention taken in conjunction with the accompanying drawings.
The invention is as shown in fig. 1 to 5:
the overrunning clutch for switching the power direction of the combined rotating speed threshold comprises a left roller overrunning clutch and a right roller overrunning clutch which are arranged side by side, wherein in an initial state, the left roller overrunning clutch is in a normally combined state, the right roller overrunning clutch is in a normally separated state, the left roller overrunning clutch is a common roller overrunning clutch and comprises a spring 7, a spring sleeve 8 and a roller one 9, the left roller overrunning clutch and the right roller overrunning clutch share an outer ring seat 3, and an inner ring seat 4 of the left roller overrunning clutch is fixedly connected with an inner ring seat 5 of the right roller overrunning clutch;
one end of the left roller overrunning clutch positioned on the outer ring seat 3 is connected with an input shaft 1 with an end cover through a bolt 2 to realize power input; an output shaft 6 is connected with the inner ring seat 4 of the left roller overrunning clutch to realize power output;
wherein: the right roller type overrunning clutch is an overrunning clutch combined at high speed, and the roller combining and separating device of the right roller type overrunning clutch is different from the prior art, and specifically comprises the following components: the inner ring seat 5 of the right roller overrunning clutch is provided with a plurality of uniformly distributed wedge-shaped structure grooves along the circumferential direction, a second roller 10 is arranged in each wedge-shaped structure groove, the end part of each wide groove of each wedge-shaped structure groove is provided with a radially extending spring accommodating groove, a guide rod 12 is radially fixed in each spring accommodating groove, a compression spring 11 and a flyweight 13 are sleeved on each guide rod 12, each flyweight 13 is positioned at the inner end of each guide rod 12, each flyweight 13 is provided with a guide hole, each flyweight 13 is in sliding fit with each guide rod 12 through the guide hole, each flyweight 13 is connected with the second roller 10 through a guide rod 14, one end of each guide rod 14 is hinged with each flyweight 13, and the other end of each guide rod 14 is hinged with the second roller 10;
under the condition that the rotating speed of the inner ring seat 5 of the right roller type overrunning clutch is greater than that of the outer ring seat 3, the flyweight 13 overcomes the resistance of the compression spring 11 under the action of centrifugal force and slides outwards along the guide rod 12, and the guide rod 14 pushes the second roller 10 to contact with the inner wall of the outer ring seat 3 so as to realize rapid combination; under the action of the compression spring 11, the flyweight 13 is positioned at the inner end of the guide rod 12 in a state that the inner ring seat 5 and the outer ring seat 3 are stationary, and the second roller 10 is not in contact with the outer ring seat 3 and is in a separation state; in a state where the rotational speed of the inner race seat 5 is smaller than the rotational speed of the outer race seat 3, the second roller 10 and the outer race seat 3 relatively roll and are in a separated state.
The inner ring seat 4 of the left roller overrunning clutch and the inner ring seat 5 of the right roller overrunning clutch are an integral structural part; or the inner ring seat 4 of the left roller overrunning clutch and the inner ring seat 5 of the right roller overrunning clutch are respectively independent parts, and the inner ring seat of the left roller overrunning clutch and the inner ring seat of the right roller overrunning clutch are fixedly connected together through bolts.
In this example, power is input from the input shaft 1 at low speed of the clutch, the power is transmitted to the output shaft 6 through the inner race 4 of the left roller overrunning clutch, when the rotation speed of the output shaft 6 is higher than the rotation speed of the input shaft 1 and lower than the threshold rotation speed of the right roller overrunning clutch, the left roller overrunning clutch acts, the power is interrupted, and the right roller overrunning clutch is still in a disconnected state; when the rotation speed of the output shaft 6 rises to the threshold rotation speed of the right roller type overrunning clutch, the inner ring seat 5 of the right roller type overrunning clutch drives the outer ring seat 3 of the right roller type overrunning clutch to act through the second roller 10, and the power of the right clutch is combined to drive the input shaft 1 to rotate, so that the reverse transmission of the power is realized.
The application of the invention:
for a manual gear automobile speed change transmission system, the clutch is needed to be stepped on for a plurality of times in the starting and upshifting process; during low-speed operation, neutral gear and other low-speed gears need to be switched for multiple times; during downhill descent, non-neutral downhill is used to avoid hazards, which aggravate the driver's effort and fuel consumption of the engine. The device is added between the traditional clutch and the speed changer, so that neutral gear sliding under certain conditions can be realized, and the strength and danger of a driver in the low-speed and downhill process are avoided; meanwhile, if the neutral gear rotating speed range is reasonably designed, a driver can directly shift gears without stepping on the clutch in the gear shifting process after starting.
Claims (3)
1. The overrunning clutch comprises a left roller overrunning clutch and a right roller overrunning clutch which are installed side by side, wherein the left roller overrunning clutch is in a normally-combined state in an initial state, the right roller overrunning clutch is in a normally-separated state, and the left roller overrunning clutch is a common roller overrunning clutch and is characterized in that:
the left roller type overrunning clutch and the right roller type overrunning clutch share an outer ring seat, and the inner ring seat of the left roller type overrunning clutch is fixedly connected with the inner ring seat of the right roller type overrunning clutch;
the power input is realized from one end of the outer ring seat, which is positioned at the left roller type overrunning clutch; an output shaft is connected with an inner ring seat of the left roller type overrunning clutch, so that power output is realized;
wherein: the right roller type overrun clutch is an overrun clutch combined at a high speed, a plurality of uniformly distributed wedge-shaped structure grooves are formed in an inner ring seat of the right roller type overrun clutch along the circumferential direction, rollers are installed in the wedge-shaped structure grooves, a radially extending spring accommodating groove is formed in the end part of each wide groove of each wedge-shaped structure groove, a guide rod is radially fixed in the spring accommodating groove, a compression spring and a flyweight are sleeved on the guide rod, the flyweight is positioned on the inner side of the guide rod, a guide hole is formed in the flyweight, the flyweight is in sliding fit with the guide rod through the guide hole, the flyweight is connected with the rollers through guide rods, one end of each guide rod is hinged with the flyweight, and the other end of each guide rod is hinged with the corresponding roller;
under the action of centrifugal force, the flyweights overcome the resistance of the compression springs and slide outwards along the guide rods under the condition that the rotating speed of the inner ring seat is larger than that of the outer ring seat, and the rollers are pushed by the guide rods to contact with the inner wall of the outer ring seat so as to realize rapid combination; under the action of the compression spring, the flyweight is positioned at the lower end of the guide rod, and the roller is not in contact with the outer ring seat and is in a separation state; and in a state that the rotating speed of the inner ring seat is smaller than that of the outer ring seat, the rollers and the outer ring seat relatively roll and are in a separation state.
2. The combination speed threshold power direction shifting overrunning clutch of claim 1, wherein: and one input shaft is connected with the outer ring seats of the left roller type overrunning clutch and the right roller type overrunning clutch through bolts, so that power transmission is realized.
3. The combination speed threshold power direction shifting overrun clutch of claim 1 or 2, wherein: the inner ring seats of the left roller type overrunning clutch and the right roller type overrunning clutch are an integral structural part; or the inner ring seats of the left roller overrunning clutch and the right roller overrunning clutch are respectively independent parts, and the inner ring seats of the left roller overrunning clutch and the inner ring seats of the right roller overrunning clutch are fixedly connected together through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810003354.XA CN108061110B (en) | 2018-01-03 | 2018-01-03 | Overrun clutch with power direction switching function through combined rotating speed threshold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810003354.XA CN108061110B (en) | 2018-01-03 | 2018-01-03 | Overrun clutch with power direction switching function through combined rotating speed threshold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108061110A CN108061110A (en) | 2018-05-22 |
| CN108061110B true CN108061110B (en) | 2023-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810003354.XA Active CN108061110B (en) | 2018-01-03 | 2018-01-03 | Overrun clutch with power direction switching function through combined rotating speed threshold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108061110B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008154830A1 (en) * | 2007-06-19 | 2008-12-24 | Byd Company Limited | Tri-state overrunning clutch |
| CN101387320A (en) * | 2008-10-09 | 2009-03-18 | 大庆石油管理局 | Bidirectional overrunning clutch commutation controlling mechanism |
| CN102146989A (en) * | 2010-09-30 | 2011-08-10 | 湖北汽车工业学院 | Sectionally continuous variable-speed drive system device |
| JP2014037875A (en) * | 2012-08-20 | 2014-02-27 | Nsk Ltd | Roller clutch with support bearing |
| CN105276027A (en) * | 2015-10-19 | 2016-01-27 | 湖北汽车工业学院 | Overrun clutch achieving rotating speed control drive and driven power reversing |
| CN107420498A (en) * | 2017-10-07 | 2017-12-01 | 梁琼 | Electric car planet row type dynamic power shift gear box and its shift control method |
-
2018
- 2018-01-03 CN CN201810003354.XA patent/CN108061110B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008154830A1 (en) * | 2007-06-19 | 2008-12-24 | Byd Company Limited | Tri-state overrunning clutch |
| CN101387320A (en) * | 2008-10-09 | 2009-03-18 | 大庆石油管理局 | Bidirectional overrunning clutch commutation controlling mechanism |
| CN102146989A (en) * | 2010-09-30 | 2011-08-10 | 湖北汽车工业学院 | Sectionally continuous variable-speed drive system device |
| JP2014037875A (en) * | 2012-08-20 | 2014-02-27 | Nsk Ltd | Roller clutch with support bearing |
| CN105276027A (en) * | 2015-10-19 | 2016-01-27 | 湖北汽车工业学院 | Overrun clutch achieving rotating speed control drive and driven power reversing |
| CN107420498A (en) * | 2017-10-07 | 2017-12-01 | 梁琼 | Electric car planet row type dynamic power shift gear box and its shift control method |
Non-Patent Citations (2)
| Title |
|---|
| 一种滚柱式超越离合器的改进设计;朱胜;李萍;井江;;现代制造技术与装备(06);全文 * |
| 弧块―滚柱式低副超越离合器扭转刚度和接合能耗的研究;薛渊;陆念力;曲秀全;胡长胜;;哈尔滨工程大学学报(07);全文 * |
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| Publication number | Publication date |
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| CN108061110A (en) | 2018-05-22 |
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Effective date of registration: 20231201 Address after: 442000, Building 2-1, No. 6A Longmen Avenue, Bailang Street Office, Bailang Economic Development Zone, Shiyan City, Hubei Province Patentee after: Hubei Huayang Automobile Brake Co.,Ltd. Address before: 442000 No. 167 Checheng West Road, Hongwei Educational Pass, Zhangwan District, Shiyan City, Hubei Province Patentee before: Hubei University of Automobile Technology |
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