Single-actuator three-gear planetary gear transmission
A planetary gear and actuator technology, which is applied in the direction of vehicle gearboxes, gear transmissions, belts/chains/gears, etc., can solve problems such as increased energy consumption, high manufacturing costs, and increased failure risks, and achieve smooth shifting process , low manufacturing cost and simple structure
Active Publication Date: 2021-11-12
福建中青传动科技有限公司
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Problems solved by technology
[0003] However, there are still many problems in the prior art: 1, under the existing one-control-one mode, how many gears are there in the transmission, it is necessary to be equipped with clutches and brakes no less than the number of gears, and each clutch and brake will have one The actuator module and the transmission are large in size and high in manufacturing cost
2. The work of multiple actuator modules increases energy consumption
3. Controlling multiple actuator modules increases signal interference, control accuracy problems, and the risk of failure increases accordingly
Method used
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[0020] In order to make the above-mentioned features and advantages of the present invention easier to understand, the following specific embodiments are described in detail with reference to the accompanying drawings, but the present invention is not limited thereto.
[0021] refer to Figure 1-Figure 3 .
[0022] In a preferred embodiment of the present invention: a single-actuator three-speed planetary gear transmission, including a housing 1 and a planetary row 2, and actuators are sequentially arranged between the housing and the planetary row from left to right assembly, the first wedge block assembly, the clutch assembly and the second wedge block assembly, the middle part of the housing is provided with a support ring 3, the support ring is located between the first wedge block assembly and the clutch assembly, the first wedge block The assembly is connected to the clutch assembly via a central link 4 .
[0023] In this embodiment, the planetary row includes a front ...
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A single-actuator three-gear planetary gear transmission comprises a shell and a planetary row, an actuator assembly, a first wedge-shaped block assembly, a clutch assembly and a second wedge-shaped block assembly are sequentially arranged between the shell and the planetary row from left to right, a supporting ring is arranged in the middle of the shell, the supporting ring is located between the first wedge-shaped block assembly and the clutch assembly, and the first wedge-shaped block assembly is connected with the clutch assembly through a center connecting rod. The transmission is simple in structure, small in size, low in manufacturing cost and low in energy consumption. The gear shifting process of all gears is driven by one actuator, no complex oil way system is used, actuator power source fluid does not need to pass through a transmission shaft, sealing between a static part and a movable part does not exist, and the axial length of the transmission cannot be increased. No matter which gear is up-shifted or down-shifted, a corresponding planetary row braking component and clutch component are gradually reduced to 0 from the current rotating speed or gradually increased to the target rotating speed from 0, and therefore the gear shifting process is smooth and free of impact.
Description
technical field [0001] The invention relates to a planetary gear transmission for an electric vehicle, in particular to a single-actuator three-speed planetary gear transmission. Background technique [0002] The existing planetary gear shift mechanism applied to automatic transmissions is relatively easy to implement various gear matching designs, and the separation and closing of the ring gear, sun gear or planet carrier is realized by using shift execution modules such as clutches, brakes and one-way clutches. And brake, so as to achieve the realization of specific gear. In the control of the working state of clutches and brakes, a one-control-one approach is generally adopted, that is, one actuator module controls a certain clutch or brake. [0003] However, there are still many problems in the prior art: 1, under the existing one-control-one mode, how many gears are there in the transmission, it is necessary to be equipped with clutches and brakes no less than the numb...
Claims
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IPC IPC(8): F16H3/46F16H57/023F16H57/029F16H57/08F16H57/10F16H61/04F16H63/30
CPCF16H3/46F16H57/023F16H57/029F16H57/082F16H57/10F16H61/04F16H63/30F16H2200/202
Inventor 刘建平
Owner 福建中青传动科技有限公司