Novel 2AMT automatic gearbox

Abstract

The novel 2AMT automatic gearbox comprises an input shaft (1), a speed reduction planet row (2), a secondary speed reduction set (3), a tertiary speed reduction set (4), a differential mechanism (5) and a gear shifting executing mechanism (6), the input shaft (1) is in transmission connection with the speed reduction planet row (2), the speed reduction planet row (2) is in driving connection with the secondary speed reduction set (3) after being controlled by the gear shifting executing mechanism (6), and the tertiary speed reduction set (4) is in driving connection with the differential mechanism (5). And the second-stage speed reduction group (3) outputs power through the differential mechanism (5) after passing through the third-stage speed reduction group (4). According to the novel 2AMT automatic gearbox, automatic gear shifting between the speed reduction planet row and the gear shifting executing mechanism is achieved through the gear shifting executing mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to a novel 2AMT automatic gearbox, especially a novel 2AMT automatic gearbox applicable to new energy electric drive axle (non-road vehicle / small horsepower tractor / tricycle). BACKGROUND

[0002] Electricity as an important energy, which is environmental protection, clean and high conversion rate, is widely used in production and life. The application of electricity to drive the update of vehicles promotes the low-carbon development of the transportation industry, reduces transportation costs, saves energy, protects the environment, and is one of the important research topics in the world. After decades of development, it has been applied in many fields such as electric city buses, factory and mine electric transport vehicles, electric city sanitation cleaning vehicles, engineering, tunnel, subway construction special vehicles. Electric tricycle has the advantages of strong applicability, mobility, simple maintenance, convenient repair and low price, and can flexibly pass through narrow roads. Electric tricycle has a reverse switch, which can easily realize reverse driving function, which is very practical in narrow roads and alleys, and is very convenient for driving and parking. It is widely used in short-distance transportation fields such as family, urban and rural areas, individual rental, factory area, mining area, sanitation, community cleaning, etc. Most of the electric tricycles on the current market use one-stage speed reduction gear or two-stage manual gear shifting. The one-stage speed reduction mode is difficult to balance power and economy; and the manual gear shifting mode greatly reduces the operation experience of the driver, and the manual gear shifting may cause tooth clashing during driving. SUMMARY

[0003] The utility model aims at overcoming the above-mentioned insufficient, provide a kind of novel 2AMT automatic gearbox, the automatic gear shifting between deceleration planetary array and gear shifting execution mechanism is realized by gear shifting execution mechanism.

[0004] The utility model aims at overcoming the above-mentioned insufficient, provide a kind of novel 2AMT automatic gearbox, the automatic gear shifting between deceleration planetary array and gear shifting execution mechanism is realized by gear shifting execution mechanism.

[0005] A kind of novel 2AMT automatic gearbox, including input shaft, deceleration planetary array, two-stage reduction group, three-stage reduction group, differential and gear shifting execution mechanism, input shaft is connected with deceleration planetary array transmission, deceleration planetary array is connected with two-stage reduction group drive after being controlled by gear shifting execution mechanism, two-stage reduction group is output power by differential after three-stage reduction group.

[0006] Preferably, the input shaft drives the sun gear of the deceleration planetary array to rotate, and the planet carrier of the deceleration planetary array is connected with the second driving gear of the two-stage reduction group as a power output end.

[0007] Preferably, the input shaft drives the sun gear of the deceleration planetary array to rotate at the same speed, and the sun gear of the deceleration planetary array is connected with the second driving gear of the two-stage reduction group as a power output end.

[0008] Preferably, the secondary driving teeth and the secondary driven teeth are engaged, the secondary driven teeth are connected with the tertiary driving teeth of the tertiary reduction group, the tertiary driving teeth and the tertiary driven teeth are engaged, the tertiary driven teeth are connected with the differential driving teeth of the differential, and the differential driving teeth and the differential driven teeth are engaged.

[0009] Compared with the prior art, the novel 2AMT automatic gearbox has the following beneficial effects:

[0010] The transmission path between the gear shifting actuator and the reduction planetary gear set is adjusted, so that when a certain vehicle speed is reached, the gearbox is automatically switched to the second gear with a lower speed ratio, so that the vehicle motor works in the high-efficiency area, reduces fuel consumption, and at the same time, the vehicle has a higher speed. And because the entire gear shifting process is automatically controlled by the TCU controller in the gear shifting actuator, the operation requirements of the driver are simplified, and the driving experience of the driver is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 FIG. 1 is a schematic view of the novel 2AMT automatic gearbox in the first gear working state according to the present application.

[0012] Figure 2 FIG. 2 is a schematic view of the novel 2AMT automatic gearbox in the second gear working state according to the present application.

[0013] Among them:

[0014] The input shaft 1, the reduction planetary gear set 2, the secondary reduction group 3, the tertiary reduction group 4, the differential 5, and the gear shifting actuator 6;

[0015] The sun gear 2.1, the planet carrier 2.2, and the ring gear 2.3;

[0016] The secondary driving teeth 3.1 and the secondary driven teeth 3.2;

[0017] The tertiary driving teeth 4.1 and the tertiary driven teeth 4.2;

[0018] The differential driving teeth 5.1 and the differential driven teeth 5.2. DETAILED DESCRIPTION

[0019] Referring to Figure 1 and Figure 2 The novel 2AMT automatic gearbox comprises an input shaft 1, a reduction planetary gear set 2, a secondary reduction group 3, a tertiary reduction group 4, a differential 5, and a gear shifting actuator 6. The gear shifting actuator 6 is provided with a controller, which is a TCU controller and can communicate with the controller of the driving motor of the electric three-wheeled motorcycle to obtain signals such as the throttle opening degree signal, the brake signal, the torque and speed of the driving motor, and the vehicle speed.

[0020] The utility model relates to a novel 2AMT automatic gearbox is in the first gear working condition when starting, and when the speed is promoted, the drive reduction planetary gear train 2 is changed transmission route and is in the second gear working condition after receiving the speed signal by the gear shifting execution mechanism 6, specifically speaking, the utility model discloses, two kinds of working conditions are:

[0021] The first gear working condition:

[0022] When the gearbox gear is in the first gear, the power transmission route map of the gearbox is as shown in Figure 1 The first gear power route diagram.

[0023] The drive motor is connected with the input shaft 1, the input shaft 1 drives the sun gear 2.1 of the drive reduction planetary gear train 2 to rotate at the same speed, the gear ring 2.3 of the drive reduction planetary gear train 2 is fixed, the planet carrier 2.2 of the drive reduction planetary gear train 2 is used as power output, the planet carrier 2.2 is connected with the second gear driving tooth 3.1 of the second gear reduction group 3,

[0024] The second gear driving tooth 3.1 is engaged with the second gear driven tooth 3.2, further reducing the speed; the second gear driven tooth 3.2 is connected with the third gear driving tooth 4.1 of the third gear reduction group 4, the third gear driving tooth 4.1 is engaged with the third gear driven tooth 4.2, further reducing the speed; the third gear driven tooth 4.2 is connected with the differential driving tooth 5.1 of the differential mechanism 5, the speed is the same, the differential driving tooth 5.1 is engaged with the differential driven tooth 5.2, reducing the speed again and being used as output.

[0025] The second gear working condition:

[0026] The second gear working condition: Figure 2 The second gear working condition:

[0027] The drive motor is connected with the input shaft 1, the input shaft 1 drives the sun gear 2.1 of the drive reduction planetary gear train 2 to rotate at the same speed, the gear ring 2.3 of the drive reduction planetary gear train 2 is fixed, the planet carrier 2.1 of the drive reduction planetary gear train 2 is used as power output, the planet carrier 2.1 is connected with the second gear driving tooth 3.1 of the second gear reduction group 3, then the second gear driving tooth 3.1 is engaged with the second gear driven tooth 3.2, further reducing the speed; the second gear driven tooth 3.2 is connected with the third gear driving tooth 4.1 of the third gear reduction group 4, the third gear driving tooth 4.1 is engaged with the third gear driven tooth 4.2, further reducing the speed; the third gear driven tooth 4.2 is connected with the differential driving tooth 5.1 of the differential mechanism 5, the speed is the same, the differential driving tooth 5.1 is engaged with the differential driven tooth 5.2, reducing the speed again and being used as output.

[0028] In addition, it should be noted that the above detailed description is only one of the optimization schemes of the patent, and any changes or improvements made by those skilled in the art based on the above idea are within the protection scope of the patent.

Claims

1. A novel 2AMT automatic transmission, characterized by: The application relates to a transmission mechanism, which comprises an input shaft (1), a reduction planetary gear (2), a two-stage reduction gear (3), a three-stage reduction gear (4), a differential (5) and a shift actuator (6), the input shaft (1) is connected with the reduction planetary gear (2) in transmission, the reduction planetary gear (2) is connected with the two-stage reduction gear (3) in drive after being controlled by the shift actuator (6), the two-stage reduction gear (3) is connected with the differential (5) in output after the three-stage reduction gear (4).

2. A novel 2AMT automatic transmission as claimed in claim 1, wherein: The input shaft (1) drives the sun gear (2.1) of the reduction planetary gear (2) to rotate, the planet carrier (2.2) of the reduction planetary gear (2) is connected with the two-stage driving tooth (3.1) of the two-stage reduction gear (3) in drive as a power output end.

3. A novel 2AMT automatic transmission as claimed in claim 1, wherein: The input shaft (1) drives the sun gear (2.1) of the reduction planetary gear (2) to rotate at the same speed, the sun gear (2.1) of the reduction planetary gear (2) is connected with the two-stage driving tooth (3.1) of the two-stage reduction gear (3) in drive as a power output end.

4. A novel 2AMT automatic transmission according to claim 2 or 3, characterized in that: The two-stage driving tooth (3.1) and the two-stage driven tooth (3.2) are engaged, the two-stage driven tooth (3.2) is connected with the three-stage driving tooth (4.1) of the three-stage reduction gear (4), the three-stage driving tooth (4.1) and the three-stage driven tooth (4.2) are engaged, the three-stage driven tooth (4.2) is connected with the differential driving tooth (5.1) of the differential (5), and the differential driving tooth (5.1) and the differential driven tooth (5.2) are engaged.

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