1.Introduction to transmission error of reducer gear There is a gear pair in the reducer. Theoretically, under the ideal assumption, the gear of the reducer is an infinite circle without any error. There is no gap in installation and no error in manufacturing. The gear rigidity of the reducer...
In the development of NVH for pure electric vehicles, the noise problem of the reducer is often found. The howling of the reducer does not account for a high proportion of the overall noise component. However, since the new energy vehicles do not have the masking effect of the...
According to the linear fatigue cumulative damage theory Miner theory, the stress amplitude of each stress level will cause certain damage to the spur gear. In this paper, the fatigue damage value Di is obtained by dividing the actual cycle number Ni by the fatigue life cycle number Ni....
In the proportion relationship between the failure parts and modes of the reducer, the gear, bearing and shaft concentrate 90% of the failure proportion, among which the gear failure accounts for the largest proportion, making the fatigue failure of the transmission gear become an important factor limiting the transmission...
1.Common problems and causes of helical gear reducer: a. Heating and oil leakage of reducer; b. Worm gear wear; c. The transmission bevel gear is worn; d. The worm bearing is damaged. 2.Common problems and solutions of helical gear reducer (1) Ensure assembly quality Professional tools are necessary to...
For heavy trucks, mining vehicles and off-road vehicles, large transmission ratio is needed, so wheel reducers are needed as the last stage of deceleration. The structure of wheel reducer is mainly composed of three parts: sun gear, planet gear and planet carrier. One of the advantages of using wheel...
In the case of reducing the hole diameter properly, modifying the size of a hole alone can not completely eliminate the phenomenon of bad contact on both sides of the gear teeth. In the final scheme, the author selects the combination of the drive crankshaft hole size of 180...
For each part of the design requirements should meet the size of the installation, power standards, long life and so on. Therefore, the requirements of the wheel reducer are as follows: 1) the maximum input power PE: 180kW; 2) the rated speed during operation: 40km / h (600r /...
The results of finite element analysis show that: When the rotation angle of the input end is between 0.64 rad and 0.78 rad, the meshing tooth pair presents a double-sided contact phenomenon, and this section includes the whole process of the tooth from meshing to disengagement. Therefore, the author...
According to the real structure and the above model simplification method, the author establishes the three-dimensional solid models of internal gear ring, planetary gear ring and planetary gear hub in SolidWorks, and imports them into ABAQUS; In ABAQUS, the analytic rigid body model (solid shell) of transmission crankshaft is...