Joint device with torsional vibration damping function

Abstract

The invention relates to the technical field of automobile transmission systems, and discloses a joint device with a torsional vibration damping function, the joint device comprises a first shell and a second shell, the first shell and the second shell are both sleeved on a rotating shaft, the first shell and the second shell are oppositely arranged and fixedly connected, the outer side end face of the first shell can be connected with a gear, and the outer side end face of the second shell can be connected with a gear; an accommodating cavity is formed between the first shell and the second shell; the vibration reduction mechanism is arranged in the containing cavity, and the vibration reduction mechanism comprises a vibration reduction piece arranged around the peripheral face of the rotating shaft; and the rotating disc is fixedly connected to the rotating shaft in the circumferential direction and located in the containing cavity, and at least one end face of the rotating disc abuts against the vibration reduction piece. Vibration caused by torque impact is counteracted by the vibration reduction piece, the joint device can be jointed under the working condition of large rotating speed difference, the driving motor active speed regulation time of an electric vehicle or a hybrid electric vehicle in the gear shifting stage is shortened, and therefore the gear shifting time is shortened, and the requirement for rotating speed control of the driving motor is lowered.

Description

technical field [0001] The present invention relates to the technical field of automobile transmission systems, in particular to a joint device with torsional vibration damping function. Background technique [0002] At present, in order to solve the problems of environmental pollution and energy crisis, the development of new energy vehicles with energy saving and emission reduction is the development trend of the automobile industry. Electric vehicles are an important development direction of new energy vehicles, and have received extensive attention due to their advantages of zero emissions, low noise, simple operation, and low maintenance and use costs. At present, the power transmission system of most electric vehicles consists of a drive motor and a single-stage reducer with a fixed speed ratio. However, an electric vehicle equipped with a single-stage reducer has higher requirements on the drive motor, and the drive motor needs to have a large starting torque and pow...

AI Technical Summary

Problems solved by technology

The motor is directly connected to the transmission input shaft, resulting in an increase in the equivalent moment of inertia at the transmission input

If the traditional lock-ring synchronizer is used for gear shifting, it will delay the speed synchronization process, cause wear and temperature rise of the conical friction surface, and affect the performance and working life of the AMT.

In addition, the increase in the moment of inertia will produce a large shifting impact, causing torsional vibration of the entire power transmission system, affecting driving comfort

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