CN110748615A - Gear shifting device and gear shifting method of two-gear transmission - Google Patents
Gear shifting device and gear shifting method of two-gear transmission Download PDFInfo
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- CN110748615A CN110748615A CN201911041647.8A CN201911041647A CN110748615A CN 110748615 A CN110748615 A CN 110748615A CN 201911041647 A CN201911041647 A CN 201911041647A CN 110748615 A CN110748615 A CN 110748615A
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/20—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear
- F16H3/22—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable only axially
- F16H3/30—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable only axially with driving and driven shafts not coaxial
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/0082—Transmissions for multiple ratios characterised by the number of reverse speeds
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2035—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with two engaging means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention relates to the technical field of motor vehicle gear shifting, in particular to a gear shifting device of a two-gear transmission and a gear shifting method thereof, wherein a gear transmission mechanism in the gear shifting device comprises a gear seat, a high-speed driving gear, a high-speed driven gear, a low-speed driving gear, a low-speed driven gear, an input shaft and an output shaft; the high-speed transmission gear set comprises a low-speed driving gear and an input shaft which are integrated; the high-speed driving gear is sleeved on the input shaft in an idle mode, and the gear seat is connected with the high-speed driving gear through a spline; the high-speed driven gear is connected with the output shaft through a spline, the high-speed driven gear is meshed with the high-speed driving gear, the low-speed driven gear is sleeved on the output shaft through the one-way clutch in an empty mode, and the low-speed driven gear is meshed with the integrated low-speed driving gear on the input shaft. The invention adopts a high-speed and low-speed parallel shaft type gear transmission structure to replace a planet gear transmission structure with a complex internal structure, thereby reducing the manufacturing cost of the speed change device and the weight of the whole vehicle and the cost of the whole vehicle.
Description
Technical Field
The invention relates to the technical field of motor vehicle gear shifting, in particular to a gear shifting device of a two-gear transmission and a gear shifting method thereof.
Background
At present, a reduction gearbox with a fixed speed ratio is mostly used in an electric vehicle, and the speed cannot be changed, so that the electric vehicle cannot better give consideration to economy and acceleration, and the performance of the whole vehicle is influenced. In order to improve the performance of the whole vehicle and take the economic efficiency and the acceleration of the electric vehicle into consideration, a motor with higher power is needed, but the weight and the cost of the whole vehicle are increased, and the power loss and the energy consumption of the whole vehicle are also increased. In addition, under the condition that the battery capacity is the same, the battery needs to output current with larger power, and the endurance mileage of the whole vehicle is reduced.
The conventional AMT has a power interruption condition in the gear shifting process, and during gear shifting, because a clutch is not arranged, large gear shifting impact exists, so-called 'jerking feeling' is generated, and the running smoothness and the driving experience of an automobile are seriously influenced; the DCT of the double-clutch automatic gearbox without power interruption during gear shifting is in clutch friction transmission, the friction torque of the wet double-clutch gearbox under the working condition of low speed ratio and high torque is limited, so that the insufficient bearing capacity can be caused to a certain extent, the transmission efficiency of the gearbox is influenced, the process requirement is high, the technical maturity is insufficient, and the reliability is greatly reduced. The automatic gearbox AT of the hydraulic torque converter performs engine power transmission through a planetary gear mechanism, and further realizes automatic gear shifting, but because the structure of the planetary gear mechanism is very complex, if one gear is additionally arranged, the structural complexity, the gearbox size and the research and development and manufacturing cost of the automatic gearbox AT of the hydraulic torque converter are affected, and more importantly, the more complex the structure of the automatic gearbox AT is, the lower the mechanical reliability is relatively.
Disclosure of Invention
Technical problem to be solved
In order to solve the problems in the prior art, the invention provides a two-gear transmission gear shifting device and a gear shifting method thereof by using a high-speed gear meshed with a low-speed gear to replace a planetary transmission gear with a complex structure.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
the invention provides a two-gear transmission shifting device, comprising: the clutch gear shifting mechanism, the reverse gear mechanism and the gear transmission mechanism are arranged on the transmission mechanism;
the clutch gear shifting mechanism comprises an oil cylinder;
the reverse gear mechanism comprises a sliding sleeve and an operating structure thereof;
the gear transmission mechanism comprises a gear seat, a high-speed transmission gear set, a low-speed transmission gear set, an input shaft and an output shaft;
the high-speed transmission gear set comprises a high-speed driving gear and a high-speed driven gear, the low-speed transmission gear set comprises a low-speed driving gear and a low-speed driven gear, and the low-speed driving gear and the input shaft are integrated;
the input shaft is sleeved with an oil cylinder and a high-speed driving gear, the small diameter of the oil cylinder is in splined connection with the input shaft, the high-speed driving gear is supported by a second bearing and is sleeved on the input shaft in an empty mode, and the small diameter of the gear seat is in splined connection with the high-speed driving gear;
the output shaft is sleeved with a high-speed driven gear and a low-speed driven gear, the high-speed driven gear is in splined connection with the output shaft and is meshed with the high-speed driving gear, the low-speed driven gear is supported by a one-way clutch and is sleeved on the output shaft in an empty mode, and the low-speed driven gear is meshed with the low-speed driving gear integrated on the input shaft.
The sliding sleeve internal diameter is equipped with the internal tooth, with low-speed driven gear left side external tooth is connected, the sliding sleeve is followed low-speed driven gear's left side external tooth endwise slip, can with high-speed driven gear right side external tooth is connected.
According to the invention, the clutch gear shift mechanism further comprises a spring, a balance piston, a dual plate and a friction plate;
the bottom of the oil cylinder is provided with a positioning boss, the piston is in contact with the positioning boss to perform axial limiting, and the large-diameter inner teeth of the oil cylinder are provided with first clamp springs to perform axial limiting. And a second clamp spring is arranged on the outer circle of the small diameter of the oil cylinder for axial limiting.
According to the invention, one end of the balance piston is in contact with the second clamp spring and is axially limited on the piston (4), and the other end of the balance piston is in contact with the piston.
According to the invention, the spring is arranged between the piston and the balancing piston, one end of the spring is in contact with the piston, and the other end of the spring is in contact with the balancing piston.
According to the invention, the large diameter of the oil cylinder is also provided with internal teeth, the large diameter of the gear seat is provided with external teeth, the dual plate is provided with external teeth, the friction plate is provided with internal teeth, the dual plate and the friction plate are arranged at intervals, the external teeth of the dual plate are connected with the internal teeth of the oil cylinder, and the internal teeth of the friction plate are connected with the external teeth of the gear seat.
According to the invention, the oil cylinder is sleeved on the input shaft, and the oil cylinder is axially limited by the third clamp spring and the first bearing respectively;
the high-speed driving gear is axially limited by a third bearing.
According to the invention, both the outer ring and the inner ring of the one-way clutch are provided with teeth, the outer ring outer teeth are connected with the low-speed driven gear inner teeth, and the inner ring inner teeth are connected with the output shaft outer teeth.
According to the invention, the outer diameter of the sliding sleeve is provided with a ring groove which is connected with a reverse gear control mechanism in the reverse gear mechanism.
The invention also provides a gear shifting method, which is based on the two-gear transmission gear shifting device, wherein in low gear, the input shaft drives the low-speed driven gear meshed with the low-speed driving gear integrated with the input shaft to drive the one-way clutch to drive the output shaft, power is input from the input shaft, is directly transmitted to the one-way clutch through the low-speed transmission gear set and is finally output from the output shaft;
when the high-speed gear is shifted, the input shaft drives the clutch to drive the gear seat, drives the high-speed driven gear meshed with the high-speed driving gear to drive the output shaft, and power is input by the input shaft, transmitted by the clutch, the gear seat and the high-speed transmission gear set and finally output by the output shaft;
when reversing gear, the sliding sleeve is connected with the right external tooth of the high-speed driven gear, the input shaft drives the low-speed driven gear meshed with the integrated low-speed driving gear to drive the sliding sleeve and the high-speed driven gear, the output shaft is driven, power is input by the input shaft, is transmitted to the high-speed driven gear through the sliding sleeve through the low-speed transmission gear set, and is finally output by the output shaft.
According to the invention, before the high-speed gear is shifted, power is transmitted by the low-speed gear, the shifting process is not interrupted by power, and after the high-speed gear is shifted, the low-speed gear driven gear idles and does not transmit power.
(III) advantageous effects
The invention has the beneficial effects that:
the invention has wider speed change range, and can better meet the requirements of the economy and the acceleration of the whole vehicle by utilizing the free switching of two speed ratios of the speed change device, thereby improving the performance of the whole vehicle; meanwhile, a gear transmission mode that a high-speed gear is meshed with a low-speed gear is adopted to replace a common planet gear transmission structure with a complex internal structure, so that the manufacturing cost of the speed change device is reduced, and further, the weight of the whole vehicle and the cost of the whole vehicle are reduced.
Drawings
Fig. 1 is a structural view of a shifting apparatus of the present invention.
[ description of reference ]
1: an oil cylinder; 2: a spring; 3: a balance piston; 4: a piston; 5: a dual sheet; 6: a friction plate; 7: a gear seat; 8: a second bearing; 9: a high speed drive gear; 10: a third bearing; 11: an input shaft; 12: an output shaft; 13: a one-way clutch; 14: a low-speed driven gear; 15: a sliding sleeve; 16: a high-speed driven gear; 17: a first bearing; 18: a first clamp spring; 19: a second clamp spring; 20: and a third clamp spring.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
The invention provides a gear shifting device and a gear shifting method of a two-gear transmission. The gear shifting device comprises a clutch gear shifting mechanism, a reverse gear mechanism and a gear transmission mechanism, wherein the clutch gear shifting mechanism comprises a hydraulic type clutch and an electric control type, the hydraulic type clutch is selected and used in the embodiment and comprises an oil cylinder, a piston and a spring, and the clutch gear shifting mechanism can also be selected and used in the electric control type and comprises a motor, a speed reducing mechanism, an axial propelling mechanism and the like.
As shown in fig. 1, the clutch shift mechanism includes a cylinder 1, a spring 2, a balance piston 3, a piston 4, a dual plate 5 and a friction plate 6; the reverse gear mechanism comprises a sliding sleeve 15 and an operating structure thereof; the gear transmission mechanism comprises a gear seat 7, a high-speed transmission gear set, a low-speed transmission gear set, an input shaft 11 and an output shaft 12.
The large-diameter internal teeth of the oil cylinder 1 are provided with first ring grooves, and first clamp springs 18 are installed in the first ring grooves for axial limiting. A second annular groove is formed in the outer circle of the small diameter of the oil cylinder 1, and a second clamp spring 19 is installed in the second annular groove and used for axial limiting. The bottom of the oil cylinder 1 is provided with a positioning boss, and the piston 4 is in contact with the positioning boss to perform axial limiting. One end of the balance piston 3 is in contact with the second clamp spring 19, the balance piston is axially limited on the piston 4, the other end of the balance piston is in contact with the piston 4, the spring 2 is arranged between the piston 4 and the balance piston 3, one end of the spring 2 is in contact with the piston 4, and the other end of the spring is in contact with the balance piston 3.
The gear transmission mechanism comprises a gear seat 7, a high-speed transmission gear set, a low-speed transmission gear set, an input shaft 11 and an output shaft 12, wherein the high-speed transmission gear set comprises a high-speed driving gear 9 and a high-speed driven gear 16, the low-speed transmission gear set comprises a low-speed driving gear and a low-speed driven gear 14, and the low-speed driving gear and the input shaft 11 are integrated.
The clutch gearshift cover is on input shaft 11, and is concrete, is equipped with the internal spline on 1 path of hydro-cylinder, and path internal spline is connected with 11 outer spline of input shaft, and 1 left side of hydro-cylinder is spacing by third jump ring 20 axial, and the right side is spacing by first bearing 17 axial.
The big footpath of gear wheel seat 7 is equipped with the external tooth, and the path is equipped with the internal spline, and path internal spline is connected with the outer spline of high-speed driving gear 9, and this high-speed driving gear 9 passes through the empty cover of second bearing 8 supporting on input shaft 11, and high-speed driving gear 9 right-hand member is spacing by third bearing 10 axial, and the high-speed driven gear 16 and the 12 splined connection of output shaft that mesh mutually of high-speed driving gear 9.
The large diameter of the oil cylinder 1 is also provided with internal teeth, the dual plate 5 is provided with external teeth, the friction plate 6 is provided with internal teeth, wherein the dual plate 5 and the friction plate 6 are arranged at intervals, the external teeth of the dual plate 5 are connected with the internal teeth of the oil cylinder 1, and the internal teeth of the friction plate 6 are connected with the large diameter external teeth of the gear seat 7.
The low-speed driven gear 14 is meshed with an integrated low-speed driving gear on the input shaft 11, and is supported and sleeved on the output shaft 12 in an empty mode through the one-way clutch 13, wherein the outer ring and the inner ring of the one-way clutch 13 are provided with teeth, specifically, outer teeth of the outer ring are connected with inner teeth of the low-speed driven gear 14, and inner teeth of the inner ring are connected with outer teeth of the output shaft 12.
In the mechanism of backing a gear, the sliding sleeve 15 external diameter is equipped with the third annular, and this annular is connected with the operating mechanism that backs a gear in the mechanism of backing a gear, and sliding sleeve 15 internal diameter still is equipped with the internal tooth, is connected with the 14 left side external teeth of low-speed driven gear, and is concrete, and sliding sleeve 15 is followed the left side external teeth axial slip of low-speed driven gear 14 to can be connected with 16 right side external teeth of high-speed driven gear.
The specific gear shifting working process comprises the following steps:
in a low gear, power is input from the input shaft 11, transmitted to the one-way clutch 13 through the low-speed transmission gear set, and finally output from the output shaft 12. A power transmission route: input shaft (low-speed driving gear) -low-speed driven gear-one-way clutch-output shaft. The power is directly transmitted by the low-speed transmission gear set without passing through the clutch gear shifting mechanism, the power loss is small, and the transmission efficiency of the gearbox is high.
When the high-speed gear is shifted, the oil cylinder 1 and the piston 4 form a closed space, pressure oil enters the closed space, then the piston 4 is pushed to move axially in the direction away from the oil cylinder 1, the piston 4 is in contact with the dual plate 5, the dual plate 5 and the friction plate 6 are pressed by the piston 4, power is transmitted by the clutch through the gear seat and the high-speed transmission gear set, and finally output by the output shaft 12. A power transmission route: the input shaft, the oil cylinder, the dual plate, the friction plate, the gear seat, the high-speed driving gear, the high-speed driven gear and the output shaft.
Before the high-speed gear shifting is completed, power is transmitted by the low-speed gear all the time, and the shifting process is free of power interruption; after the high-speed gear is shifted, the low-speed gear driven gear idles, power is not transmitted, and meanwhile, a friction plate type clutch is not arranged in the low-speed gear, namely, the drag loss of the friction plate type clutch is avoided, so that the power loss of the gearbox is reduced, and the transmission efficiency of the gearbox is improved.
When the reverse gear is performed, the reverse gear control mechanism pushes the sliding sleeve 15 to axially move towards the direction close to the oil cylinder 1 along the left external teeth of the low-speed driven gear 14, so that the sliding sleeve 15 is connected with the right external teeth of the high-speed driven gear 16. A power transmission route: input shaft (low-speed driving gear), low-speed driven gear, sliding sleeve, high-speed driven gear and output shaft. Power is directly transmitted by the low-speed transmission gear without passing through the clutch gear shifting mechanism, power loss is small, and transmission efficiency of the gearbox is high.
The invention has wider speed change range, can realize free switching of two speed ratios, and replaces the common planet gear transmission structure with complex structure by the high-speed and low-speed parallel shaft type gear transmission structure, thereby better meeting the requirements of the economy and the acceleration of the whole automobile.
It should be understood that the above description of specific embodiments of the present invention is only for the purpose of illustrating the technical lines and features of the present invention, and is intended to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, but the present invention is not limited to the above specific embodiments. It is intended that all such changes and modifications as fall within the scope of the appended claims be embraced therein.
Claims (10)
1. A two-speed transmission shifting apparatus, characterized by: the gear shifting device comprises: the clutch gear shifting mechanism, the reverse gear mechanism and the gear transmission mechanism are arranged on the transmission mechanism;
the clutch gear shifting mechanism comprises an oil cylinder (1);
the reverse gear mechanism comprises a sliding sleeve (15) and an operation structure thereof;
the gear transmission mechanism comprises a gear seat (7), a high-speed transmission gear set, a low-speed transmission gear set, an input shaft (11) and an output shaft (12);
the high-speed transmission gear set comprises a high-speed driving gear (9) and a high-speed driven gear (16), the low-speed transmission gear set comprises a low-speed driving gear and a low-speed driven gear (14), and the low-speed driving gear is integrated with the input shaft (11);
an oil cylinder (1) and a high-speed driving gear (9) are sleeved on the input shaft (11), the small diameter of the oil cylinder (1) is in splined connection with the input shaft (11), the high-speed driving gear (9) is supported by a second bearing (8) and is freely sleeved on the input shaft (11), and the small diameter of the gear seat (7) is in splined connection with the high-speed driving gear (9);
a high-speed driven gear (16) and a low-speed driven gear (14) are sleeved on the output shaft (12), the high-speed driven gear (16) is in splined connection with the output shaft (12), the high-speed driven gear (16) is meshed with the high-speed driving gear (9), the low-speed driven gear (14) is supported by a one-way clutch (13) and is freely sleeved on the output shaft (12), and the low-speed driven gear (14) is meshed with a low-speed driving gear integrated with the input shaft (11);
the internal diameter of the sliding sleeve (15) is provided with an internal spline, the sliding sleeve is connected with the left external spline of the low-speed driven gear (14) in a sliding manner, and the sliding sleeve (15) slides along the left external spline of the low-speed driven gear (14) in an axial direction and can be connected with the right external spline of the high-speed driven gear (16).
2. The two speed transmission shifting apparatus of claim 1, wherein:
the clutch gear shifting mechanism further comprises a spring (2), a balance piston (3), a piston (4), a dual plate (5) and a friction plate (6);
the bottom of the oil cylinder (1) is provided with a positioning boss, the piston (4) is in contact with the positioning boss to perform axial limiting, and the large-diameter internal teeth of the oil cylinder (1) are provided with a first clamp spring (18) to perform axial limiting. The small-diameter outer circle of the oil cylinder (1) is provided with a second clamp spring (19) for axial limiting.
3. The two speed transmission shifting apparatus of claim 2, wherein:
one end of the balance piston (3) is in contact with the second clamp spring (19) and is axially limited on the piston (4), and the other end of the balance piston is in contact with the piston (4).
4. The two speed transmission shifting apparatus of claim 2, wherein:
the spring (2) is arranged between the piston (4) and the balance piston (3), one end of the spring (2) is in contact with the piston (4), and the other end of the spring is in contact with the balance piston (3).
5. The two speed transmission shifting apparatus of any one of claims 2-4, wherein:
hydro-cylinder (1) footpath greatly still is equipped with the internal tooth, gear seat (7) footpath greatly is equipped with the external tooth, dual piece (5) are equipped with the external tooth, friction disc (6) are equipped with the internal tooth, dual piece (5) with friction disc (6) interval is placed, dual piece (5) external tooth and hydro-cylinder (1) internal toothing, friction disc (6) internal tooth is connected with the external tooth of gear seat (7).
6. The two speed transmission shifting apparatus of claim 5, wherein:
the oil cylinder (1) is sleeved on the input shaft (11), and the oil cylinder (1) is axially limited by a third clamp spring (20) and a first bearing (17) respectively;
the high-speed driving gear (9) is axially limited by a third bearing (10).
7. The two speed transmission shifting apparatus of claim 6, wherein:
the outer ring and the inner ring of the one-way clutch (13) are provided with teeth, outer ring outer teeth are connected with inner teeth of the low-speed driven gear (14), and inner ring inner teeth are connected with outer teeth of the output shaft (12).
8. The two speed transmission shifting apparatus of claim 7, wherein:
the outer diameter of the sliding sleeve (15) is provided with a ring groove, and the ring groove is connected with a reverse gear control mechanism in the reverse gear mechanism.
9. A shifting method based on the two speed transmission shifting apparatus according to any one of claims 1 to 8, characterized in that:
in a low-speed gear, the input shaft drives a low-speed driven gear meshed with a low-speed driving gear integrated with the input shaft to drive a one-way clutch to drive an output shaft;
when the high-speed gear is shifted, the input shaft drives the clutch to drive the gear seat, and drives the high-speed driven gear meshed with the high-speed driving gear to drive the output shaft;
when the reverse gear is performed, the sliding sleeve is connected with the outer teeth on the right side of the high-speed driven gear, and the input shaft drives the low-speed driven gear meshed with the low-speed driving gear integrated with the input shaft to drive the sliding sleeve and the high-speed driven gear to drive the output shaft.
10. The gear shifting method according to claim 9, characterized in that:
before the high-speed gear is shifted, power is transmitted by the low-speed gear all the time, the shifting process is not interrupted by power, and after the high-speed gear is shifted, the low-speed gear driven gear idles and does not transmit power.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019109332221 | 2019-09-29 | ||
| CN201910933222 | 2019-09-29 |
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| CN110748615A true CN110748615A (en) | 2020-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921839671.1U Active CN211059305U (en) | 2019-09-29 | 2019-10-30 | Two keep off derailleur gearshift |
| CN201911041647.8A Pending CN110748615A (en) | 2019-09-29 | 2019-10-30 | Gear shifting device and gear shifting method of two-gear transmission |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921839671.1U Active CN211059305U (en) | 2019-09-29 | 2019-10-30 | Two keep off derailleur gearshift |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623091A (en) * | 2020-06-10 | 2020-09-04 | 福建中青汽车技术有限公司 | Two-gear automatic gearbox |
| CN112065936A (en) * | 2020-08-31 | 2020-12-11 | 安徽江淮汽车集团股份有限公司 | Two separation and reunion two-gear gearbox and electric automobile |
| CN112682480A (en) * | 2021-01-15 | 2021-04-20 | 天津大学 | Novel gear transmission structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211059305U (en) * | 2019-09-29 | 2020-07-21 | 湖南奕普汽车科技有限公司 | Two keep off derailleur gearshift |
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| CN112682480A (en) * | 2021-01-15 | 2021-04-20 | 天津大学 | Novel gear transmission structure |
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