CN109798342A - Speed change gear - Google Patents
Speed change gear Download PDFInfo
- Publication number
- CN109798342A CN109798342A CN201910075942.9A CN201910075942A CN109798342A CN 109798342 A CN109798342 A CN 109798342A CN 201910075942 A CN201910075942 A CN 201910075942A CN 109798342 A CN109798342 A CN 109798342A
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- China
- Prior art keywords
- gear train
- gear
- input shaft
- train
- speed change
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- 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.)
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Abstract
The present invention provides a kind of speed change gear comprising pedestal, casing, cyclic train, input shaft and output shaft.Cyclic train includes differential gear train and star gear train, and differential gear train is by input shaft input power, and by output shaft output power, planetary gear train can carry out power transmitting by driving section from input shaft input power, planetary gear train and differential gear train by centrifugal mechanism.Unilateral bearing, driving section one-directional rotation are provided between driving section and pedestal.When the revolving speed of input shaft is lower than desired speed, unilateral bearing is used to constrain the one degree of freedom of differential gear train.Be conducive to obtain bigger transmission ratio regulation space by way of synthesizing output power, to increase the modification scope of speed change gear.
Description
Technical field
The present invention relates to a kind of speed change gears.
Background technique
Existing speed change gear is generally the speed change gear of three-level or more, for existing two grades of speed change gears, mainly deposits
The problem of be that structure is complicated, reliable transmission is low, if speed change gear more than traditional third gear is changed to two grades of speed change gears
Technical difficulty is high, at high cost, does not meet actual use.And the adjustable extent of existing two grades of speed change gears is smaller, is not achieved
The ideal use scope of people.
Description
The object of the present invention is to provide a kind of two grades of speed changes and the big speed change gears of adjustable extent.
To achieve the above object, the present invention provides a kind of speed change gear comprising pedestal, casing, cyclic train, input shaft
And output shaft.Cyclic train includes differential gear train and star gear train, and differential gear train passes through output shaft by input shaft input power
Output power, planetary gear train can pass through driving section from input shaft input power, planetary gear train and differential gear train by centrifugal mechanism
Carry out power transmitting.Unilateral bearing, driving section one-directional rotation are provided between driving section and pedestal.When the revolving speed of input shaft is lower than
When desired speed, unilateral bearing is used to constrain the one degree of freedom of differential gear train.
It is defeated when input shaft by above scheme as it can be seen that differential gear train and planetary gear train that speed change gear of the invention is arranged
When entering revolving speed lower than desired speed, speed change gear exports the power of the first transmission ratio by differential gear train；When the input of input shaft
When revolving speed is higher than desired speed, for planetary gear train by centrifugal mechanism from input shaft input power, speed change gear passes through planetary gear train
The power of the second transmission ratio is exported with differential gear train.Be conducive to speed change gear and obtain two different transmission ratios, is conducive to pass through
The mode of synthesis output power obtains bigger transmission ratio regulation space, to increase the modification scope of speed change gear.And then have
Conducive to the output revolving speed for improving speed change gear.The setting of unilateral bearing is beneficial to prevent speed change gear idle running.
Further scheme is that centrifugal mechanism includes guide part, centrifugal-block and provides the reset element of reset force, and guide part is solid
It is scheduled on input shaft, reset element drives centrifugal-block to be reset to first close to input shaft by the second position far from input shaft
It sets.Centrifugal-block is moved downward in leading for guide part.By centrifugal mechanism, it need to only regulate and control the input speed of input shaft, can be completed
The switching of the transmission ratio of speed change gear, to realize the fluid drive of speed change gear.
Further scheme is that reset element is the magnetic source group with reset force, and magnetic source group includes the first magnetic source and the second magnetic
Source, the first magnetic source are arranged in centrifugal-block, and the second magnetic source is arranged in guide part.Be conducive to improve the reliability of centrifugal mechanism.
Further scheme is that reset element is to encircle the ring-spring of the centrifugal-block.
Further scheme is the first planet carrier connection of input shaft and differential gear train, the first of output shaft and differential gear train
Sun gear connection, the second sun gear or the second gear ring of planetary gear train are connected by the first gear ring of driving section and differential gear train.
Be conducive to improve the transmission ratio at output power of speed change gear.
Further scheme is the first sun gear connection of input shaft and differential gear train, the first of output shaft and differential gear train
Gear ring connection, the second sun wheel carrier of planetary gear train or the second gear ring are connected by the first planet carrier of driving section and differential gear train
It connects.Be conducive to export high torque when lower than predetermined speed；When being higher than desired speed, higher rotation speed is exported.Be conducive to mention
The modification scope of high speed change gear.
Further scheme is the first gear ring connection of input shaft and differential gear train, and the first of output shaft and differential gear train is too
Sun wheel connection, the second sun gear or the second gear ring of planetary gear train are connected by the first planet carrier of driving section and differential gear train.
Be conducive to export high torque when lower than predetermined speed；When being higher than desired speed, higher rotation speed is exported.
Further scheme is the first gear ring connection of input shaft and differential gear train, the first row of output shaft and differential gear train
Carrier connection, the second sun gear or the second planet carrier of planetary gear train or the second gear ring pass through the first of driving section and differential gear train
Sun gear connection.Be conducive to improve the transmission ratio at output power of speed change gear.High power is automatically exported in high gear.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of the first embodiment of speed change gear；
Fig. 2 is the cross-sectional view at the A-A of Fig. 1；
Fig. 3 is speed change gear transmission schematic diagram；
Fig. 4 is the main view of centrifugal mechanism；
Fig. 5 is the three-dimensional cutaway view at the B-B of Fig. 4；
Fig. 6 is the schematic diagram of the second embodiment of speed change gear；
Fig. 7 is the transmission schematic diagram of the 3rd embodiment of speed change gear；
Fig. 8 is the transmission schematic diagram of the fourth embodiment of speed change gear；
Fig. 9 is the transmission schematic diagram of the 5th embodiment of speed change gear；
Figure 10 is the transmission schematic diagram of the sixth embodiment of speed change gear；
Figure 11 is the transmission schematic diagram of the 7th embodiment of speed change gear；
Figure 12 is the transmission schematic diagram of the 8th embodiment of speed change gear；
Figure 13 is the transmission schematic diagram of the 9th embodiment of speed change gear；
Figure 14 is the transmission schematic diagram of the tenth embodiment of speed change gear；
Figure 15 is the transmission schematic diagram of the 11st embodiment of speed change gear.
Specific embodiment
The first embodiment of speed change gear
As depicted in figs. 1 and 2, speed change gear 100 includes pedestal 101, casing 102, input shaft 103, output shaft 104 and epicyclic wheel
System.Cyclic train includes differential gear train 105 and star gear train 106.Differential gear train 105 includes the first sun gear 1051, the first row
Star-wheel 1052, first planet carrier 1053 and the first gear ring 1054.Planetary gear train 106 includes the second sun gear 1061, the second planet
Take turns the 1062, second planet carrier 1063 and the second gear ring 1064.The first planet carrier 1053 of input shaft 103 and differential gear train 105 connects
Connect, output shaft 104 is connect with the first sun gear 1051 of differential gear train 105, the second gear ring 1054 of planetary gear train 106 with it is differential
First gear ring 1054 of train 105 connects.Differential gear train 105 is exported by 103 input power of input shaft by output shaft 104
Power.Planetary gear train 106 is connect by centrifugal mechanism 107 with output shaft 103, planetary gear train 106 can pass through centrifugal mechanism 107 from
103 input power of input shaft.Differential gear train 105 and planetary gear train 106 pass through driving section 108, differential gear train 105 and planetary gear train
106 carry out power transmitting by driving section 108.Driving section 108 is rotatably arranged on pedestal 101 by unilateral bearing 109.
As shown in figure 3, setting input shaft 103 along the rotation of direction 01 and input power.When the revolving speed of input shaft 103 is lower than predetermined
When revolving speed, centrifugal mechanism 107 does not transmit power to planetary gear train 106, and input shaft 103 is only dynamic to the input of differential speed gears 105
Power.The first planet carrier 1053 of differential speed gears 105 is driving link at this time, and is rotated along direction 01.First gear ring 1054 is first
There is the trend rotated along direction 01 under the drive of planet carrier 1053, under the action of unilateral bearing 109, limit the first gear ring
1054 rotate along direction 01, and the first gear ring 1054 is fixing piece at this time.Therefore first planet carrier 1053 is rotated and is driven first too
Sun wheel 1051 is rotated along direction 01.When the revolving speed of input shaft 103 is higher than desired speed, input shaft 103 passes through the first row
Carrier 1053 inputs the first power to differential gear train 105.Referring to figs. 2 and 3, the second sun gear 1061 of planetary gear train 106 is
Driving link, the second planet carrier 1063 are fixing piece, and the second gear ring 1064 is Passive part, and the second gear ring 1064 passes through driving section 108
It is connect with the first gear ring 1054.Input shaft 103 passes through centrifugal mechanism 107, planetary gear train 106 and the first gear ring 1054 to differential gear
It is 105 the second power of input.The first planet carrier 1053 of differential gear train 105 and the first gear ring 1054 are driving link, first sun
Wheel 1051 is Passive part, and differential gear train 105 exports the first power and the second power coupling, obtains speed change gear 100 and defeated
Third power out.
Preferably, as shown in Figure 4, Figure 5, centrifugal mechanism 107 includes guide part 1071, centrifugal-block 1072 and offer reset force
Reset element 1073, guide part 1071 is fixed on input shaft 103, and centrifugal-block 1072 is transported under the guiding of guide part 1071
It is dynamic.When the reset that input shaft 103 is when being changed into high revolving speed by the slow-speed of revolution, and centrifugal-block 1072 overcomes reset element 1073 to provide
Power from mobile to the separate input shaft second position close to input shaft first position under the guidance of guide part 1071, and passes through friction
The second sun gear 1061 is driven to rotate.When input shaft 103 is when being changed into the slow-speed of revolution by high revolving speed, reset element 1073 drive from
Heart block 1072 far from the input shaft second position by being reset to close to input shaft first position.Preferably, reset element 1073 is tool
Have the magnetic source group of reset force, the magnetic source group include the first magnetic source 1074 and the second magnetic source 1075, the first magnetic source 1074 setting from
In heart block 1072, the second magnetic source 1075 is arranged in guide part.
Optionally, guide part 1071 can be fixed on input shaft 103 by the method for integrated molding, the setting of keyway.It leads
Centrifugal-block 1072 being not limited to portion 1071, slide-and-guide being provided, rotation guiding can also be provided for it.
The second embodiment of speed change gear
The present embodiment is essentially identical with first embodiment, and difference is the connection relationship of differential gear train and planetary gear train.
As shown in fig. 6, speed change gear includes pedestal 201, casing 202, differential gear train 203, planetary gear train 204, input shaft
205, output shaft 206, centrifugal mechanism 207, driving section 208, unilateral bearing 209.Driving section 208 can be turned by unilateral bearing 209
It is arranged on pedestal 201 dynamicly.Differential gear train 203 includes the first sun gear 2031, the first planetary gear 2032, first planet carrier
2033 and first gear ring 2034.Planetary gear train 204 includes the second sun gear 2041, the second planetary gear 2042, the second planet carrier
2043 and second gear ring 2044.
Input shaft 205 is connect with first planet carrier 2033, and output shaft 206 is connect with the first sun gear 2031, second sun
Wheel 2041 is connect by driving section 208 with the first gear ring 2034.At this point, input shaft 205 passes through centrifugal mechanism 207 to the second gear ring
2044 input powers.Be conducive to further increase the transmission ratio of speed change gear.
The 3rd embodiment of speed change gear
As shown in fig. 7, input shaft 2051 is connect with the first sun gear 20311, output shaft 2061 is connect with the first gear ring 20341,
Second gear ring 20441 is connect by driving section 2081 with first planet carrier 20331.At this point, input shaft 2051 passes through centrifugal mechanism
2071 to 20411 input power of the second sun gear.It is provided with unilateral bearing 2091 between driving section 2081 and pedestal 2011, is driven
Portion 2081 one-directionally rotates.When the revolving speed of input shaft 2051 is lower than desired speed, unilateral bearing 2091 is for constraining differential gear train
One degree of freedom.Be conducive to export high torque when lower than predetermined speed；When being higher than desired speed, higher turn is exported
Speed.
The fourth embodiment of speed change gear
As shown in figure 8, input shaft 2052 is connect with the first sun gear 20312, output shaft 2062 is connect with the first gear ring 20342,
Second sun gear 20412 is connect by driving section 2082 with first planet carrier 20332.At this point, input shaft 2052 passes through centrifuge
Structure 2072 is to 20442 input power of the second gear ring.It is provided with unilateral bearing 2092 between driving section 2082 and pedestal 2012, is driven
Portion 2082 one-directionally rotates.When the revolving speed of input shaft 2052 is lower than desired speed, unilateral bearing 2092 is for constraining differential gear train
One degree of freedom.Be conducive to export high torque when lower than predetermined speed；When being higher than desired speed, higher turn is exported
Speed.
5th embodiment of speed change gear
As shown in figure 9, input shaft 2053 is connect with the first gear ring 20343, output shaft 2063 is connect with first planet carrier 20333,
Second planet carrier 20433 is connect by driving section 2083 with the first sun gear 20313.At this point, input shaft 2053 passes through centrifuge
Structure 2073 is to 20413 input power of the second sun gear.It is provided with unilateral bearing 2093 between driving section 2083 and pedestal 2013, passes
Dynamic portion 2083 one-directionally rotates.When the revolving speed of input shaft 2053 is lower than desired speed, unilateral bearing 2093 is for constraining differential gear
The one degree of freedom of system.Be conducive to export high torque when lower than predetermined speed；When being higher than desired speed, export higher
Revolving speed.
The sixth embodiment of speed change gear
As shown in Figure 10, input shaft 2054 is connect with the first gear ring 20344, and output shaft 2064 is connect with first planet carrier 20334,
Second planet carrier 20434 is connect by driving section 2084 with the first sun gear 20314.At this point, input shaft 2054 passes through centrifuge
Structure 2074 is to 20444 input power of the second gear ring.It is provided with unilateral bearing 2094 between driving section 2084 and pedestal 2014, is driven
Portion 2084 one-directionally rotates.When the revolving speed of input shaft 2054 is lower than desired speed, unilateral bearing 2094 is for constraining differential gear train
One degree of freedom.Be conducive to export high torque when lower than predetermined speed；When being higher than desired speed, higher turn is exported
Speed.
7th embodiment of speed change gear
As shown in figure 11, input shaft 2055 is connect with the first gear ring 20345, and output shaft 2065 is connect with first planet carrier 20335,
Second gear ring 20445 is connect by driving section 2085 with the first sun gear 20315.At this point, input shaft 2055 passes through centrifugal mechanism
2075 to 20435 input power of the second planet carrier.It is provided with unilateral bearing 2095 between driving section 2085 and pedestal 2015, is driven
Portion 2085 one-directionally rotates.When the revolving speed of input shaft 2055 is lower than desired speed, unilateral bearing 2095 is for constraining differential gear train
One degree of freedom.Be conducive to export high torque when lower than predetermined speed；When being higher than desired speed, higher turn is exported
Speed.
8th embodiment of speed change gear
As shown in figure 12, input shaft 2056 is connect with the first gear ring 20346, and output shaft 2066 is connect with first planet carrier 20336,
Second sun gear 20416 is connect by driving section 2086 with the first sun gear 20316.At this point, input shaft 2056 passes through centrifuge
Structure 2076 is to 20436 input power of the second planet carrier.It is provided with unilateral bearing 2096 between driving section 2086 and pedestal 2016, passes
Dynamic portion 2086 one-directionally rotates.When the revolving speed of input shaft 2056 is lower than desired speed, unilateral bearing 2096 is for constraining differential gear
The one degree of freedom of system.Be conducive to export high torque when lower than predetermined speed；When being higher than desired speed, export higher
Revolving speed.
9th embodiment of speed change gear
As shown in figure 13, input shaft 2057 is connect with the first gear ring 20347, and output shaft 2067 is connect with the first sun gear 20317,
Second sun gear 20417 is connect by driving section 2087 with first planet carrier 20337.At this point, input shaft 2057 passes through centrifuge
Structure 2077 is to 20447 input power of the second gear ring.It is provided with unilateral bearing 2097 between driving section 2087 and pedestal 2017, is driven
Portion 2087 one-directionally rotates.When the revolving speed of input shaft 2057 is lower than desired speed, unilateral bearing 2097 is for constraining differential gear train
One degree of freedom.Be conducive to further increase the transmission ratio of speed change gear.
Tenth embodiment of speed change gear
As shown in figure 14, input shaft 2058 is connect with the first gear ring 20348, and output shaft 2068 is connect with the first sun gear 20318,
Second gear ring 20448 is connect by driving section 2088 with first planet carrier 20338.At this point, input shaft 2058 passes through centrifugal mechanism
2078 to 20418 input power of the second sun gear.It is provided with unilateral bearing 2098 between driving section 2088 and pedestal 2018, is driven
Portion 2088 one-directionally rotates.When the revolving speed of input shaft 2058 is lower than desired speed, unilateral bearing 2098 is for constraining differential gear train
One degree of freedom.Be conducive to further increase the transmission ratio of speed change gear.
11st embodiment of speed change gear
As shown in figure 15, input shaft 2059 is connect with first planet carrier 20339, and output shaft 2069 is connect with the first gear ring 20349,
Second sun gear 20419 is connect by driving section 2089 with the first sun gear 20319.At this point, input shaft 2059 passes through centrifuge
Structure 2079 is to 20449 input power of the second gear ring.It is provided with unilateral bearing 2099 between driving section 2089 and pedestal 2019, is driven
Portion 2089 one-directionally rotates.When the revolving speed of input shaft 2059 is lower than desired speed, unilateral bearing 2099 is for constraining differential gear train
One degree of freedom.Be conducive to further increase the transmission ratio of speed change gear.
It is made for the present invention in conjunction with specific embodiments be described in detail, and it cannot be said that specific implementation of the invention above
Mode is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, the present invention is not being departed from
Several equivalent substitute or obvious modifications are made under the premise of design, and performance or use is identical, all shall be regarded as belonging to this hair
Bright scope of patent protection determined by the appended claims.
Claims (8)
1. speed change gear, including pedestal, casing, cyclic train, input shaft and output shaft；
It is characterized by:
The cyclic train includes differential gear train and star gear train；
The differential gear train passes through the output shaft output power by the input shaft input power；
The planetary gear train can be by centrifugal mechanism from the input shaft input power；
The planetary gear train and the differential gear train pass through driving section progress power transmitting；
Unilateral bearing, the driving section one-directional rotation are provided between the driving section and the pedestal；
When the revolving speed of the input shaft is lower than desired speed, the unilateral bearing is used to constrain one of the differential gear train certainly
By spending.
2. speed change gear according to claim 1, it is characterised in that:
The centrifugal mechanism includes the reset element of guide part, centrifugal-block and offer reset force；
The guide part is fixed on the input shaft；
The reset element drives the centrifugal-block to be reset to by the second position far from the input shaft close to the input shaft
First position, the centrifugal-block moves downward in leading for the guide part.
3. speed change gear according to claim 2, it is characterised in that:
The reset element is the magnetic source group with reset force；
The magnetic source group includes the first magnetic source and the second magnetic source；
First magnetic source is arranged in centrifugal-block, and second magnetic source is arranged in the guide part.
4. speed change gear according to claim 2, it is characterised in that:
The reset element is to encircle the ring-spring of the centrifugal-block.
5. speed change gear according to claim 2, it is characterised in that:
The input shaft is connect with the first planet carrier of the differential gear train；
The output shaft is connect with the first sun gear of the differential gear train；
The second sun gear or the second gear ring of the planetary gear train pass through the first gear ring of the driving section and the differential gear train
Connection.
6. speed change gear according to claim 2, it is characterised in that:
The input shaft is connect with the first sun gear of the differential gear train；
The output shaft is connect with the first gear ring of the differential gear train；
The second sun gear or the second gear ring of the planetary gear train pass through the first planet of the driving section and the differential gear train
Frame connection.
7. speed change gear according to claim 2, it is characterised in that:
The input shaft is connect with the first gear ring of the differential gear train；
The output shaft is connect with the first sun gear of the differential gear train；
The second sun gear or the second gear ring of the planetary gear train pass through the first planet of the driving section and the differential gear train
Frame connection.
8. speed change gear according to claim 2, it is characterised in that:
The input shaft is connect with the first gear ring of the differential gear train；
The output shaft is connect with the first planet carrier of the differential gear train；
The second sun gear or the second planet carrier of the planetary gear train or the second gear ring pass through the driving section and the differential gear
The first sun gear connection of system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018112614869 | 2018-10-27 | ||
| CN201811261486 | 2018-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109798342A true CN109798342A (en) | 2019-05-24 |
Family
ID=66559041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910075942.9A Pending CN109798342A (en) | 2018-10-27 | 2019-01-25 | Speed change gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109798342A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2526253Y (en) * | 2002-01-23 | 2002-12-18 | 铁岭天星机械有限公司 | Automatic speed variator of bicycle with magnetic reset flexible transmission solid shaft |
| US20050032604A1 (en) * | 2003-08-09 | 2005-02-10 | Perkins Engines Company Limited | Two speed transmission |
| CN103438172A (en) * | 2013-08-31 | 2013-12-11 | 西南大学 | Planetary gear train two-gear speed control system |
| CN106438880A (en) * | 2016-11-14 | 2017-02-22 | 重庆青山工业有限责任公司 | Pure electric two-speed transmission |
| CN107791805A (en) * | 2017-11-29 | 2018-03-13 | 常州格力博有限公司 | From Force system of walking about |
| CN207178599U (en) * | 2017-08-22 | 2018-04-03 | 上海伊控动力系统有限公司 | A kind of pure electric vehicle two of power failure-free keeps off gearbox |
-
2019
- 2019-01-25 CN CN201910075942.9A patent/CN109798342A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2526253Y (en) * | 2002-01-23 | 2002-12-18 | 铁岭天星机械有限公司 | Automatic speed variator of bicycle with magnetic reset flexible transmission solid shaft |
| US20050032604A1 (en) * | 2003-08-09 | 2005-02-10 | Perkins Engines Company Limited | Two speed transmission |
| CN103438172A (en) * | 2013-08-31 | 2013-12-11 | 西南大学 | Planetary gear train two-gear speed control system |
| CN106438880A (en) * | 2016-11-14 | 2017-02-22 | 重庆青山工业有限责任公司 | Pure electric two-speed transmission |
| CN207178599U (en) * | 2017-08-22 | 2018-04-03 | 上海伊控动力系统有限公司 | A kind of pure electric vehicle two of power failure-free keeps off gearbox |
| CN107791805A (en) * | 2017-11-29 | 2018-03-13 | 常州格力博有限公司 | From Force system of walking about |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20190524 |