Damping device of coaxial electric drive axle
A vibration damping device and electric drive technology, applied in the direction of electric power device, power device, control device, etc., can solve problems such as the influence of the meshing characteristics of the sun gear and the planetary gear
Active Publication Date: 2020-12-18
WUHAN UNIV OF TECH +1
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- Application Information
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Problems solved by technology
[0004] The invention provides a vibration damping device of a coaxial electric drive axle to solve the technical problem in the prior art that the axial movement of the motor causes the meshing characteristics of the sun gear and the planetary gear in the coaxial electric drive axle to be affected
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[0017] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention. In the following paragraphs the invention is described more specifically by way of example with reference to the accompanying drawings. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.
[0018] Such as Figure 1 to Figure 4 As shown, the present invention provides a vibration damping device for a coaxial electric drive axle, including a driving disc 1, a driven disc 2, an axial damping assembly 3 and a circumferential vibration damping assembly...
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The invention provides a damping device of a coaxial electric drive axle. The damping device aims at solving the technical problem of axial movement of a motor in the prior art. The damping device comprises a driving disc, a driven disc, an axial damping assembly and circumferential damping assemblies. The driving disc and the driven disc are oppositely arranged and coaxially installed, the axialdamping assembly is an axial magneto-rheological damping shock absorber and comprises a first cylinder body, a first piston, a first coil and a first circulating valve, a first cavity is formed in thefirst cylinder body, magneto-rheological fluid is contained in the first cavity, and the first cylinder body is coaxially and movably arranged on the outer side of a sleeve in a sleeving manner; thesleeve and the first cylinder body are in dynamic seal, the first piston is fixedly connected to the outer side of the sleeve in a sleeving manner, the first piston is coaxially arranged in the firstcavity and is in dynamic seal with the first cavity, a first circulating groove is formed in the periphery of the first piston, the first coil is installed in the first circulating groove, and the first circulating valve is installed on the periphery of the first piston; and the circumferential damping assemblies are installed between the driving disc and the driven disc in the circumferential direction.
Description
technical field [0001] The invention relates to the technical field of vibration reduction of a coaxial electric drive axle, in particular to a vibration damping device of a coaxial electric drive axle. Background technique [0002] In the coaxial electric drive axle, the motor, reducer, differential and other components are coaxially arranged. The motor and reducer are designed with a hollow shaft, and the half shaft passes through the motor and reducer to output power to the opposite wheel. The coaxial electric drive axle has the advantages of short transmission chain, light weight and high transmission efficiency. However, due to the high rigidity of the entire transmission system, the impact from the motor, gears and road to the wheels will affect the NVH performance of the transmission system, and May have an impact on the reliability of the transmission system. [0003] The axial movement of the motor shaft refers to the inevitable small movement of the motor shaft al...
Claims
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Login to View More IPC IPC(8): F16F15/16F16F15/124B60K1/00B60K17/12
CPCB60K1/00B60K17/12F16F15/124F16F15/161
Inventor 杨灿卢炽华袁守利王海雄田韶鹏
Owner WUHAN UNIV OF TECH