CN112343982A - A torque-assisted two-speed mechanical automatic transmission - Google Patents

A torque-assisted two-speed mechanical automatic transmission Download PDF

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Publication number
CN112343982A
CN112343982A CN202010980921.4A CN202010980921A CN112343982A CN 112343982 A CN112343982 A CN 112343982A CN 202010980921 A CN202010980921 A CN 202010980921A CN 112343982 A CN112343982 A CN 112343982A
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gear
shaft
driven gear
speed
auxiliary
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CN202010980921.4A
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Inventor
臧怀泉
吴鹏
潘涛
强鹏辉
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Yanshan University
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Yanshan University
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Priority to CN202010980921.4A priority Critical patent/CN112343982A/en
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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
    • 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
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • 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
    • 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
    • F16H61/02—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 characterised by the signals used
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)

Abstract

本发明公开了一种转矩辅助两挡机械式自动变速器，包括：输入轴、中间Ⅰ轴、中间Ⅱ轴、输出轴，依次设置于所述输入轴上的辅助挡主动齿轮、一挡主动齿轮和二挡主动齿轮，设置于所述中间Ⅰ轴上的辅助挡从动齿轮，设置于所述中间Ⅰ轴和中间Ⅱ轴之间的离合器，依次设置于所述中间Ⅱ轴上的一挡从动齿轮、同步器、二挡从动齿轮和主减速器主动齿轮，依次设置于所述输出轴上的差速器和主减速器从动齿轮，本发明增加了转矩辅助挡，克服了两挡机械式自动变速器在换挡过程中存在的动力中断问题，提高了汽车动力性，并且转矩辅助挡可在两挡机械式自动变速器的基础上加装，进一步降低成本。

Figure 202010980921

The invention discloses a torque-assisted two-speed mechanical automatic transmission, comprising: an input shaft, an intermediate I shaft, an intermediate II shaft, an output shaft, an auxiliary gear driving gear and a first gear driving gear arranged on the input shaft in sequence. and the second gear driving gear, the auxiliary gear driven gear arranged on the intermediate I shaft, the clutch arranged between the intermediate I shaft and the intermediate II shaft, and the first gear slave gear arranged on the intermediate II shaft in turn. The driving gear, the synchronizer, the second-speed driven gear and the main reducer driving gear are sequentially arranged on the differential gear and the main reducer driven gear on the output shaft. The invention adds a torque auxiliary gear, which overcomes the two The problem of power interruption in the gear shifting process of the mechanical automatic transmission improves the power performance of the vehicle, and the torque assist gear can be installed on the basis of the two-speed mechanical automatic transmission to further reduce the cost.

Figure 202010980921

Description

Torque-assisted two-gear mechanical automatic transmission
Technical Field
The invention relates to a torque-assisted two-gear mechanical automatic transmission, and belongs to the technical field of automobile transmissions.
Background
The pure electric vehicle is driven by the battery to provide power and runs by the motor, has the advantages of zero emission, low noise and the like, and is an effective way for relieving the problems of energy consumption, environmental pollution and the like at present. Different from the internal combustion engine used by the traditional automobile, the driving motor applied to the pure electric automobile has the characteristics of wide speed regulation range, low-speed constant torque and high-speed constant power. Due to these advantageous properties of the drive motor, clutches and transmissions can be omitted in pure electric vehicles to a certain extent. At present, most of power systems of pure electric vehicles adopt a scheme that a driving motor is matched with a speed reducer with a fixed speed ratio, the scheme needs to adopt the driving motor with higher power, otherwise, the requirements of torque and vehicle speed when the vehicle runs can not be met at the same time, and the working efficiency of the driving motor is lower. The driving motor is matched with the two-gear transmission, so that the power requirement on the driving motor can be reduced, and the dynamic property and the economical efficiency of the automobile are effectively improved.
The two-gear mechanical automatic transmission has the advantages of strong dynamic property, good reliability and low cost, and is an important choice for the automatic transmission of the pure electric vehicle. The two-gear mechanical automatic transmission has the defect that power interruption is generated during gear shifting, so that the problem of power interruption is solved, and the two-gear mechanical automatic transmission is a key direction for development of the technical field of two-gear mechanical automatic transmissions.
Disclosure of Invention
The invention provides a torque-assisted two-gear mechanical automatic transmission, which can solve the problem of power interruption in the gear shifting process of the two-gear mechanical automatic transmission.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a torque-assisted two-gear mechanical automatic transmission comprises an input shaft, an intermediate shaft I, an intermediate shaft II and an output shaft, wherein the input shaft, the intermediate shaft I, the intermediate shaft II and the output shaft are driven to rotate by a driving motor, one end of the intermediate shaft I and one end of the intermediate shaft II are connected through a clutch, an auxiliary gear driving gear, a first gear driving gear and a second gear driving gear which rotate along with the input shaft are sequentially hinged on the input shaft at intervals, an auxiliary gear driven gear which drives the intermediate shaft I to rotate is hinged on the intermediate shaft I and is meshed with the auxiliary gear driving gear, a synchronizer and a main reducer driving gear which drive the intermediate shaft II to rotate are hinged on the intermediate shaft II at intervals, a first gear driven gear and a second gear driven gear are respectively sleeved on the intermediate shaft II on two sides of the synchronizer, and the synchronizer moves along the left and right axial directions of the intermediate shaft II and is respectively clamped with the first gear driven gear, Two keep off driven gear synchronous rotation, one keep off driven gear, two keep off driven gear respectively with one keep off driving gear, two keep off the driving gear meshing, it has drive output shaft pivoted final drive driven gear and differential mechanism to articulate on the output shaft, and final drive driven gear and differential mechanism block, final drive driven gear and final drive driving gear meshing.
The technical scheme of the invention is further improved as follows: and the transmission ratio of the auxiliary gear driving gear and the auxiliary gear driven gear is smaller than that of the second gear driving gear and the second gear driven gear.
The technical scheme of the invention is further improved as follows: the clutch is set to be an electromagnetic clutch.
Due to the adoption of the technical scheme, the invention has the technical progress that:
the torque-assisted two-gear mechanical automatic transmission is additionally provided with a torque-assisted gear on the basis of the two-gear mechanical automatic transmission, the torque-assisted gear can perform power compensation during gear shifting of the transmission, and the unpowered interrupted gear shifting is realized by controlling the actions of a clutch and a synchronizer.
Drawings
FIG. 1 is a schematic structural view of the present invention;
the driving gear comprises a driving motor 1, a driving motor 2, an input shaft 3, an auxiliary gear driving gear 4, a first gear driving gear 5, a second gear driving gear 6, a middle shaft I, a middle shaft 7, an auxiliary gear driven gear 8, a clutch 9, a first gear driven gear 10, a synchronizer 11, a second gear driven gear 12, a main reducer driving gear 13, a middle shaft II, a differential 14, a differential 15, a main reducer driven gear 16 and an output shaft.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
as shown in fig. 1, the torque-assisted two-speed automatic mechanical transmission includes: input shaft 2, I axle 6 in the middle, II axles 13 in the middle, output shaft 16 set gradually in supplementary fender driving gear 3 on the input shaft 2, one keep off driving gear 4 and two keep off driving gear 5, set up in the supplementary fender driven gear 7 on I axle 6 in the middle, set up in clutch 8 between I axle 6 in the middle and II axles 13 in the middle, set gradually in one keep off driven gear 9, synchronous ware 10, two keep off driven gear 11 and main reducer driving gear 12 on II axles 13 in the middle, set gradually in differential 14 and main reducer driven gear 15 on the output shaft 16.
The auxiliary gear driving gear 3, the first gear driving gear 4 and the second gear driving gear 5 are respectively connected with the input shaft 2, the auxiliary gear driven gear 7 is connected with the shaft 6 in the middle, the main reducer driving gear 12 is connected with the shaft 13 in the middle, and the first gear driven gear 9 and the second gear driven gear 11 are both sleeved on the shaft 13 in the middle.
The first gear driving gear 4, the second gear driving gear 5, the auxiliary gear driving gear 3 and the main reducer driving gear 12 are respectively meshed with the first gear driven gear 9, the second gear driven gear 11, the auxiliary gear driven gear 7 and the main reducer driven gear 15.
The clutch 8 adopts an electromagnetic clutch, and the left end and the right end of the clutch 8 are respectively connected with the middle shaft I6 and the middle shaft II 13.
The synchronizer 10 is disposed between the first-gear driven gear 9 and the second-gear driven gear 11, and the synchronizer 10 is axially movable and coupled to the first-gear driven gear 9 and the second-gear driven gear 11, respectively.
The transmission ratio between the auxiliary gear driving gear 3 and the auxiliary gear driven gear 7 is smaller than the transmission ratio between the second gear driving gear 5 and the second gear driven gear 11.
The working principle of the invention is as follows:
a neutral gear state: the synchronizer 10 is placed in the neutral position and the clutch 8 is disengaged, with the transmission in neutral.
A first gear state: the synchronizer 10 is moved to be engaged with the first-gear driven gear 9, the clutch 8 is in a disengaged state, the transmission is in the first gear, and the output torque of the driving motor 1 is transmitted to the intermediate ii shaft 13 through the first-gear driving gear 4 and the first-gear driven gear 9.
A second gear state: the synchronizer 10 moves to be combined with the second-gear driven gear 11, the clutch 8 is in a separated state, the transmission is in the second gear at the moment, and the output torque of the driving motor 1 is transmitted to the middle shaft II 13 through the second-gear driving gear 5 and the second-gear driven gear 11.
An auxiliary gear state: the clutch 8 is engaged, and the transmission is in the auxiliary gear, and the output torque of the drive motor 1 is transmitted to the intermediate shaft ii 13 via the auxiliary gear drive gear 3, the auxiliary gear driven gear 7, the intermediate shaft i 6, and the clutch 8.
The torque transmitted to the intermediate ii shaft 13 is transmitted to the output shaft 16 via the final drive gear 12, the final drive driven gear 15, and the differential 14.
Upshifting: when the automobile runs in the first gear currently, the transmission controller sends out a gear-up command to perform gear-up operation. The clutch 8 is gradually engaged, the first gear and the auxiliary gear of the transmission transmit torque together, and when the torque transmitted by the synchronizer 10 is reduced to zero, the synchronizer 10 is separated from the first gear driven gear 9, and the first gear is disengaged. And the clutch 8 is continuously engaged, and when the second-gear driven gear 11 and the middle II shaft 13 synchronously rotate, the synchronizer 9 and the second-gear driven gear 11 are combined, and the second gear is engaged. The clutch 8 is gradually disengaged and the upshift process ends when the clutch 8 is fully disengaged.
Gear reduction: when the automobile runs in the second gear currently, the transmission controller sends a downshift instruction to perform downshift operation. The clutch 8 is gradually engaged, the second gear and the auxiliary gear of the transmission transmit torque together, and when the torque transmitted by the synchronizer 10 is reduced to zero, the synchronizer 10 and the second gear driven gear 11 are separated, and the second gear is disengaged. The clutch 8 is gradually separated, and when the first-gear driven gear 9 and the intermediate II shaft 13 synchronously rotate, the synchronizer 10 and the first-gear driven gear 9 are combined, and the first gear is engaged. The clutch 8 continues to be disengaged and the downshift process ends when the clutch 8 is fully disengaged.

Claims (3)

1.一种转矩辅助两挡机械式自动变速器，其特征在于：包括通过驱动电机（1）带动转动的输入轴（2）以及中间Ⅰ轴（6）、中间Ⅱ轴（13）和输出轴（16），且中间Ⅰ轴（6）的一端和中间Ⅱ轴（13）的一端通过离合器（8）连接，所述输入轴（2）上依次间隔铰接有随输入轴（2）转动的辅助挡主动齿轮（3）、一挡主动齿轮（4）和二挡主动齿轮（5），所述中间Ⅰ轴（6）上铰接有带动中间Ⅰ轴（6）转动的辅助挡从动齿轮（7），且辅助挡从动齿轮（7）与辅助挡主动齿轮（3）啮合，所述中间Ⅱ轴（13）上间隔铰接有带动中间Ⅱ轴（13）转动的同步器（10）和主减速器主动齿轮（12），所述同步器（10）两侧的中间Ⅱ轴（13）上分别套设有一挡从动齿轮（9）和二挡从动齿轮（11），且同步器（10）沿中间Ⅱ轴（13）左右轴向移动分别与一挡从动齿轮（9）、二挡从动齿轮（11）卡合跟随一挡从动齿轮（9）、二挡从动齿轮（11）同步转动，所述一挡从动齿轮（9）、二挡从动齿轮（11）分别与一挡主动齿轮（4）、二挡主动齿轮（5）啮合，所述输出轴（16）上铰接有带动输出轴（16）转动的主减速器从动齿轮（15）和差速器（14），且主减速器从动齿轮（15）与差速器（14）卡合，所述主减速器从动齿轮（15）与主减速器主动齿轮（12）啮合。1. A torque-assisted two-speed mechanical automatic transmission, characterized in that it comprises an input shaft (2) driven to rotate by a drive motor (1), an intermediate I shaft (6), an intermediate II shaft (13) and an output shaft (16), and one end of the intermediate I shaft (6) and one end of the intermediate II shaft (13) are connected through the clutch (8), and the input shaft (2) is hinged in turn with an auxiliary auxiliary rotating with the input shaft (2). Gear driving gear (3), first gear driving gear (4) and second gear driving gear (5), the intermediate I shaft (6) is hinged with an auxiliary gear driven gear (7) that drives the intermediate I shaft (6) to rotate ), and the auxiliary gear driven gear (7) meshes with the auxiliary gear driving gear (3), and the intermediate II shaft (13) is hinged at intervals with a synchronizer (10) and a main reducer that drive the intermediate II shaft (13) to rotate A first-speed driven gear (9) and a second-speed driven gear (11) are respectively sleeved on the intermediate II shafts (13) on both sides of the synchronizer (10), and the synchronizer (10) ) along the middle Ⅱ axis (13) axially moving left and right to engage with the first-speed driven gear (9) and the second-speed driven gear (11), respectively, and follow the first-speed driven gear (9) and second-speed driven gear (11). ) rotate synchronously, the first-speed driven gear (9) and the second-speed driven gear (11) mesh with the first-speed driving gear (4) and the second-speed driving gear (5) respectively, and the output shaft (16) is on the The main reducer driven gear (15) and the differential (14) are hinged to drive the output shaft (16) to rotate, and the main reducer driven gear (15) is engaged with the differential (14). The reducer driven gear (15) meshes with the main reducer drive gear (12). 2.根据权利要求1所述的一种转矩辅助两挡机械式自动变速器，其特征在于：所述辅助挡主动齿轮（3）和辅助挡从动齿轮（7）的传动比小于二挡主动齿轮（5）和二挡从动齿轮（11）的传动比。2. A torque-assisted two-speed mechanical automatic transmission according to claim 1, characterized in that: the transmission ratio of the auxiliary drive gear (3) and the auxiliary drive driven gear (7) is smaller than that of the second-speed drive Gear ratio (5) and second gear driven gear (11). 3.根据权利要求1所述的一种转矩辅助两挡机械式自动变速器，其特征在于：所述离合器（8）设置为电磁离合器。3 . The torque-assisted two-speed mechanical automatic transmission according to claim 1 , wherein the clutch ( 8 ) is configured as an electromagnetic clutch. 4 .
CN202010980921.4A 2020-09-17 2020-09-17 A torque-assisted two-speed mechanical automatic transmission Pending CN112343982A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115343940A (en) * 2022-08-03 2022-11-15 燕山大学 A dry clutch torque tracking double-loop control method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002021997A (en) * 2000-07-05 2002-01-23 Hitachi Ltd Control device for automatic transmission
CN205371477U (en) * 2016-03-08 2016-07-06 唐山爱信齿轮有限责任公司 Electric automobile keeps off derailleur with two
CN106438872A (en) * 2015-08-07 2017-02-22 现代自动车株式会社 Transmission for electric vehicle
CN207437716U (en) * 2017-10-23 2018-06-01 重庆洲煌传动设备有限公司 Two shift transmission transmission mechanism of electric car
CN108825728A (en) * 2018-08-30 2018-11-16 苏州格特钠汽车技术有限公司 A kind of no gear shift power interruption two-level electric gear shift(ing)

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002021997A (en) * 2000-07-05 2002-01-23 Hitachi Ltd Control device for automatic transmission
CN106438872A (en) * 2015-08-07 2017-02-22 现代自动车株式会社 Transmission for electric vehicle
CN205371477U (en) * 2016-03-08 2016-07-06 唐山爱信齿轮有限责任公司 Electric automobile keeps off derailleur with two
CN207437716U (en) * 2017-10-23 2018-06-01 重庆洲煌传动设备有限公司 Two shift transmission transmission mechanism of electric car
CN108825728A (en) * 2018-08-30 2018-11-16 苏州格特钠汽车技术有限公司 A kind of no gear shift power interruption two-level electric gear shift(ing)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115343940A (en) * 2022-08-03 2022-11-15 燕山大学 A dry clutch torque tracking double-loop control method

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Application publication date: 20210209