New energy electric logistics vehicle rear axle drive main speed reducer
A technology of energy electric animals and main reducers, which is applied in the direction of transmission, transmission parts, gear transmission, etc., can solve the problems of poor rigidity, noise, and long span, and achieve the goal of reducing noise, reducing noise, and reducing span Effect
Pending Publication Date: 2018-06-29
JIANGSUSNGCHI GROUP
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Problems solved by technology
[0003] The purpose of the present invention is to provide a rear axle drive main reducer of a new energy electric logistics vehicle, which solves the problem that the high-speed input shaft bearing support point of the existing vehicle rear axle drive main reducer has a relatively long span, relatively poor rigidity, and gear meshing When there is a radial force, resulting in technical problems of noise
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[0028] In order to better understand the present invention, the content of the present invention is further explained below in conjunction with the examples, but the content of the present invention is not limited to the following examples.
[0029] Such as figure 2 , 3 As shown, the main reducer driven by the rear axle of the new energy electric logistics vehicle includes a reducer housing 1 and an input shaft 2, a transmission shaft 3 and an output shaft 4 arranged in the housing through bearing rotation; the input shaft is provided with The first gear 5, the first gear 5 is integrally formed with the input shaft 2, the motor output shaft and the input shaft of the final reducer are connected by splines (the motor is not shown in the figure), and the bearing on the input shaft is close to the motor side The span between the spline and the spline is 9.95cm; at the same time, the distance between the two bearings on the input shaft is shortened;
[0030] The transmission sh...
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The invention discloses a new energy electric logistics vehicle rear axle drive main speed reducer. The main speed reducer comprises a speed reducer shell, an input shaft, a transmission shaft, an output shaft, a first gear, a second gear, a third gear and a fourth gear. The distance from an input shaft bearing to the joint of a motor spline is 9.95 cm. The contact ratio between the second gear and the first gear is 3.03. The contact ratio between the fourth gear and the third gear is 3.05. The tooth profile sliding ratio of the second gear and the first gear is 0.98. The tooth profile slidingratio of the fourth gear and the third gear is 0.94. Noise is reduced from 94 db to 72 db by reducing the connection span of the input shaft bearing and the motor spline and vibration of the input shaft during high-speed rotating. By improving the contact ratio, noise of transmission engagement of the gears is reduced. On the premise of satisfying the bending strength of tooth roots, the modulusis reduced, the number of teeth is increased, the contact ratio and transmission stability are improved, the sliding rate of tooth surfaces is reduced, wear and noise are reduced, and the service lifeis prolonged.
Description
technical field [0001] The invention relates to a main reducer driven by a rear axle of a new energy electric logistics vehicle. Background technique [0002] The main reducer driven by the rear axle of the existing vehicle has a relatively long span of the support point of the high-speed input shaft bearing, and relatively poor rigidity, such as figure 1 shown. And when the gears mesh, there is a radial force, especially at different speeds, it is easy to generate resonance, and the noise increases significantly. Contents of the invention [0003] The purpose of the present invention is to provide a rear axle drive main reducer of a new energy electric logistics vehicle, which solves the problem that the high-speed input shaft bearing support point of the existing vehicle rear axle drive main reducer has a relatively long span, relatively poor rigidity, and gear meshing When there is a radial force, resulting in technical problems of noise. [0004] For solving the pro...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16H1/20F16H55/17F16H55/08F16H57/021F16H57/023F16H57/028
CPCF16H1/20F16H55/08F16H55/17F16H57/021F16H57/023F16H57/028F16H2055/086F16H2057/02043
Inventor 张鹏飞曾建峰
Owner JIANGSUSNGCHI GROUP