Vibration response of high speed helical gear drive under meshing impact excitation
In order to study the vibration characteristics of the system under separate excitation of meshing impact, the meshing impact curve […]
In order to study the vibration characteristics of the system under separate excitation of meshing impact, the meshing impact curve […]
Input the obtained time-varying meshing stiffness curve into the dynamic equations, obtain the vibration response of single-stage helical gear transmission […]
The calculated vibration accelerations in all directions of the helical gear are combined into “relative vibration accelerations a in the […]
Based on the multi-body dynamics, statics and acoustics of the reduction box and gear system of the electric vehicle, the […]
(1) At present, domestic and foreign research on the helical gear modification technology is almost concentrated on the simultaneous tooth […]
The optimal modification scheme of the addendum involute of the long tooth profile is the modification amount of the driving […]
Taking the helical gear pair of a reduction box of an electric vehicle as the research object, the influence of […]
The optimal modification scheme of the addendum arc of the long tooth profile is 5% of the modification amount of […]
Wu Luji believes that the power loss directly determines the transmission performance of the helical gear, so it is necessary […]
The sliding coefficient is an important parameter to measure the relative sliding degree between the tooth surfaces of the meshing […]
It can be seen from the figure that the efficiency of helical gear transmission after the optimization and modification of […]
In order to further reduce the transmission error of the helical gear pair, it is necessary to consider the composite […]
Figures 1, 2 and 3 respectively show the simultaneous tooth drum modification of wheel and pinion gears, the drum modification […]
(1) Influence of pinion tooth width on transmission error of helical gear Figure 1 shows the relationship curve between pinion […]
(1) Influence of gear width on transmission error of helical gear Figure 1 shows the curve of the relationship between […]
(1) Influence of helix angle on transmission error of helical gears Figure 1 shows the relationship curve between the helix […]
1. Meshing interference inspection KISSsoft software can mark the contact point of the tooth surface of two gears in the […]
1. Helical gear material selection Helical gear materials can be roughly divided into four categories, such as Q235, Q275, 45 […]
With the increasingly serious energy and environmental problems, new energy vehicles have attracted much attention. With its advantages of zero […]
Through MATLAB simulation, the uniqueness of the helical gear side profile shape is verified, the helical gear rotation direction is […]
There is still a certain gap between the accuracy of this method and that of contact measurement. The main reasons […]
Helical gears are widely used in engineering. Compared with straight gears, helical gears have the advantages of smooth operation, high […]
In order to study the influence of temperature on the contact force of helical gear tooth surface, the tooth surface […]
The friction coefficient of tooth surface in helical gear meshing is f ≤ 0 2. Combined with the relevant research […]
Based on the elastic-plastic model, the tooth surface contact force of helical gear under different loads (400, 1000, 1500, 2000N […]
The heating flow density is applied to the meshing contact helical gear tooth surface, and the convective heat transfer coefficient […]
The elastic and elastoplastic models can be obtained by inputting two different strain curves. Among them, the elastic model only […]
By combining the basic involute equation with the involute in the gear machining coordinate system, the involute curve equation of […]
According to the change rule of the contact lines on the left and right sides of the pitch line in […]
Helical gear has the characteristics of good meshing performance, large coincidence degree and compact structure, resulting in less impact vibration […]
In order to study the influence of the mean value of time-varying meshing stiffness of helical gears on the vibration […]
Input the obtained time-varying meshing stiffness curve and meshing impact curve into the dynamic equations at the same time to […]
In order to study the influence of the time-varying meshing stiffness amplitude of gears on the vibration characteristics of the […]
In order to study the influence of the above two excitation factors on the system vibration, the vibration speed diagram […]
The high-speed helical gear drive of an electric vehicle is taken as the research object, and its structure diagram is […]
The dynamic model of the input stage tooth pair of an electric vehicle reducer is established, and the time-varying meshing […]
In the whole meshing area of helical gear pair, the meshing point of error free helical gear transmission is always […]
(1) The influence of compound optimization modification scheme of top involute and tooth direction drum of long tooth profile of […]
There are three schemes for drum shape optimization modification of tooth profile, namely, the modification amount of driving wheel is […]
Figure 1 shows the influence curve of the pinion tooth width on the time-varying meshing force of the helical gear […]
The optimal modification scheme of the top broken line arc of the long tooth profile is the modification amount of […]
For the dynamics of nonlinear helical gear system, the solid collision method, the finite element transient analysis method and the […]
The linear optimization modification scheme of long tooth profile addendum is the modification amount of driving gear 3 μ m. […]
As shown in the figure, the three-dimensional cloud diagram of contact stress of No. 0 unmodified, No. 1 optimization scheme […]
Figure 1 shows the influence curve of helix angle on the time-varying meshing force of the helical gear pair at […]
Transmission error belongs to error excitation, which is an important factor affecting the vibration and noise of meshing helical gear […]
As shown in the figure, the tooth surface load distribution of No. 0 unmodified, No. 1 optimization scheme and No. […]
Taking the helical gear pair of an electric vehicle gearbox as the research object, the KISSsoft software was used to […]
Under the ideal oil lubricated meshing condition, the big and small gear teeth will be completely separated by the oil […]
The three-dimensional model of helical gear is established, and the contact analysis of helical gear is carried out by finite […]
(1) Gear profile optimization modification+tooth direction drum modification Figures 1, 2, 3, 4 and 5 respectively show the composite modification […]
(1) Influence of pressure angle on transmission error of helical gears Figure 1 shows the relationship curve between pressure angle […]
(1) Optimal modification of linear addendum with long tooth profile Figures 1, 2 and 3 respectively show the simultaneous long […]
Transmission error is an important physical quantity used to describe the deviation degree between the actual angle and the theoretical […]
(1) Selection of long and short modification methods Long modification refers to the repair and removal of the part from […]
For helical gear pair transmission, the number of rotation cycles of the pinion is more than that of the big […]
(1) Time-varying meshing stiffness Because the gear teeth will produce elastic deformation when the gear is engaged, and the gear […]
At present, most electric vehicle OEMs use motor+gearbox+rear axle (as shown in the figure) instead of motor+rear axle, which not […]
Under the ideal condition that all components in the gearbox except the helical gear are regarded as absolute rigid bodies […]
As shown in Figure 1 (a), under ideal or no-load conditions, the helical gear pair can mesh smoothly and bear […]