Influence of tooth line radius of variable hyperbolic arc gear on meshing stiffness curve
For the variable hyperbolic arc gear, when the radius of the tooth line is small, the tooth profile surface of […]
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Influence of load on meshing stiffness curve of variable hyperbolic arc gear
When different loads are applied, the comprehensive elastic deformation of the tooth surface of the variable hyperbolic arc gear changes,
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Comprehensive meshing stiffness of double teeth of variable hyperbolic arc gear
After the single tooth meshing stiffness is obtained, the double tooth comprehensive meshing stiffness curve can be obtained by the
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Single tooth meshing stiffness of variable hyperbolic arc gear
The comprehensive elastic deformation UN of the pair of gear teeth is extracted by finite element post-processing, and the normal
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Iteration of modification parameters for multi-stage gear transmission system of shearer cutting section
An example is given to show the iterative process of the modification parameters. The tooth profile modification in this study
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Normal contact force and comprehensive elastic deformation of meshing tooth surface of variable hyperbolic arc gear
In order to accurately simulate the whole process of a certain tooth surface of the driving gear from entering meshing
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Simulation analysis of rough surface of gear transmission system
In order to compare and display the data intuitively, the single logarithm coordinate drawing method is used to draw the
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Establishment of finite element analysis model of variable hyperbolic arc gear
In order to calculate the stiffness of variable hyperbolic arc gear, it is necessary to calculate the normal contact force
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Contact model of asperity on rough surface of gear transmission system
According to the two-dimensional contour curve (formula) of rough surface expressed by W-M function, the morphology characteristics of rough surface
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Tooth profile modification of multistage gear transmission system of shearer cutting part
In this study, symmetrical straight line modification is used in the direction of tooth profile, and the modification curve is
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Friction mathematical model of meshing stiffness of gear transmission system
According to the actual meshing process of gear pair, the interface of a pair of gear pairs is filled with
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Digital modeling of variable hyperbolic arc gear
The principle of machining variable hyperbolic arc gear with rotating cutter head is shown in Figure 1. With double-edged cutting,
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Dynamic model of tractor planetary gear transmission system
According to Lagrange equation, the dynamic differential equation of planetary transmission system can be deduced as follows Among them, JS,
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Tooth direction repair drum of multi-stage gear transmission system of shearer cutting part
The calculation process of the modification parameter calculation method mainly includes four steps: the first step is to obtain the
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Calculation formula of meshing stiffness of variable hyperbolic arc gear
According to the forming principle of rotary cutter head, Zhao Fei et al. Verified mathematically that the middle section tooth
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Time varying meshing stiffness of tractor planetary gears
In order to ensure the continuous operation, the meshing process of gears is actually the alternating meshing of single pair
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Constraint conditions of Tractor Gear Optimization Based on mathematical analysis
According to the characteristics of objective function and planetary gear design, constraints can be divided into flexible constraints and rigid
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Dynamic simulation of multistage gear transmission system of shearer cutting part
System dynamics simulation is to obtain the actual meshing state of each gear pair. The coupling dynamic model of the
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Discrete model and boundary conditions of finite element gear pair with time-varying meshing stiffness
The basic idea of using finite element method to calculate the time-varying meshing stiffness of gear pair is to discretize
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Mathematical model of Tractor Gear Optimization
According to the large power of tractor transmission system, higher requirements are put forward for the strength and service life
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Example simulation and parameter influence analysis of meshing contact stiffness of gear tooth surface
The parameters of gear pair are selected as the calculation object, and the contact stiffness of gear pair under Yang
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Yang-sun and semi empirical contact model for meshing contact stiffness of gear tooth surface
According to the Hertz contact analysis theory, the geometric model of the contact end face of two cylinders as shown
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Formula of meshing force of single tooth considering multi-stage gear profile modification drum and support system deformation
In the following three steps, the formula of meshing force of single tooth is derived, which takes into account the
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Optimization of gear three dimensional modification based on genetic algorithm
The determination method of gear modification parameters is usually based on theoretical calculation or experimental induction, this method is generally
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Principle and method of gear profile modification of transmission
Tooth profile modification is a common method to avoid the impact of gears in the process of meshing. It can
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Basic introduction and comparison of gear tooth profile
In order to further study the dividing line of the number of teeth in the two cases, according to the
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Stiffness composition and analytical equation of spur gear teeth
The standard involute gear with 20 ° pressure angle processed by rack cutter is shown in the figure. The complete
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Gear meshing stiffness composition
According to the meshing movement process of a pair of gear pairs, the statically indindent meshing diagram of the gear
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Formula of single tooth meshing force considering support system deformation and multi-stage gear profile modification
Because reducing the fluctuation of static transmission error is generally accepted as the criterion of tooth profile modification, the key
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Fault signal of sun gear based on elmd optimized by adaptive noise parameters
The time domain waveform and frequency spectrum of vibration data measured when the sun wheel is cracked are shown in
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Fault signal of planetary gear based on ELMD optimized by adaptive noise parameters
The time domain waveform of vibration data measured when the planetary gear is cracked is shown in Figure 1. It
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Study on Time-varying Meshing Stiffness of Analytical Gear
The analytic method of potential energy is mainly based on the elastic mechanics theory and the elastic deformation energy under
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Optimization effect evaluation of multi gear rocker box in shearer cutting section
This part analyzes the influence of rocker box structure optimization on gear meshing state of internal transmission system. Stationary random
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Fault analysis of planetary gearbox based on elmd with adaptive noise parameter optimization
In order to verify the effectiveness of the proposed method in planetary gearbox fault diagnosis, a planetary gearbox fault simulation
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Dynamic model of planetary gear transmission system
According to Lagrange equation, the dynamic differential equation of planetary transmission system can be deduced as follows Among them, JS,
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Time varying meshing stiffness of planetary gears
In order to ensure the continuous operation, the meshing process of gears is actually the alternating meshing of single pair
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Dynamics model of gear transmission system under fatigue pitting of tooth surface
Figure (b) and (c) the torsional vibration dynamic model of elastic support model (figure) (a) effect can reflect more parameters,
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Dynamic mathematical model of gear transmission system with different degrees of freedom and analysis objects
With three degrees of freedom type torsional vibration model (FIG. (a)) as the carrier for the influence parameters calculation and
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Calculation of contact life of American Standard ANSI / AGMA 2001-d04 gears
American Standard ANSI / agma2001 is adopted to calculate the required contact strength, and the calculation formula is as follows:
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Calculation of gear life in ISO / TS 6336-2 standard
1.Calculate the S-N curve of gear The required contact strength is calculated according to ISO / TS 6336-2. Since it
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Topology optimization model of multi gear rocker box in shearer cutting section
Structural optimization is the application of optimization algorithm in mechanical design. According to different optimization variables and levels, it can
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Nonlinear connection of multi stage gear transmission box coupling dynamic model
Bearing reaction force, meshing load of fixed shaft gear, driving torque of cutting motor and cutting roller load are considered
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Constraint conditions of Tractor Gear Optimization Based on mathematical analysis
According to the characteristics of objective function and planetary gear design, constraints can be divided into flexible constraints and rigid
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Linear elastic connection of multi-stage gear transmission box coupling dynamic model
The motor rotor and the gear shaft 1, the gear shaft 8 and the sun gear of the first stage
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Mathematical model of Tractor Gear Optimization Based on mathematical analysis
According to the large power of tractor transmission system, higher requirements are put forward for the strength and service life
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VMD comparison and verification of variable speed gearbox gear calculation
In order to further illustrate the superiority of this method, the order spectrum obtained by EMD and itd is compared
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Rigid connection of multi-stage gear transmission box coupling dynamic model
When the gear and the shaft are connected by spline, or the analysis object is the gear shaft, it can
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Feature extraction of gear uniform wear fault
Through the method proposed in this paper, the feature extraction of gear uniform wear fault is carried out, and the
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Structural optimization design of multi gear rocker box in shearer cutting section
Topology optimization is a kind of conceptual design. The optimization results are shown in the figure, which can not be
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Feature extraction of gear broken fault
Firstly, the vibration signal is resampled in the angular domain, and the input shaft speed curve (as shown in Figure
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Non Hertz contact model of multi-stage gear with three-dimensional topological modification considering box deformation
Three dimensional topological modification is an effective means to improve the transmission quality of gear system, which includes two directions
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Numbering method of degrees of freedom for multi-stage gear transmission box coupling dynamic model
The generalized displacements of substructure dynamic equations are numbered in local coordinates, and the generalized displacements of each substructure will
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VMD for solving variational problems in gear calculation of variable speed gearbox
By introducing the quadratic penalty factor α and Lagrange operator λ (T), the constrained variational problem is transformed into the
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Variational modal decomposition of Gearbox Based on VMD-FastICA
VMD is an adaptive signal analysis method, which can find the optimal solution of the variational model through multiple iterations,
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Tooth direction error of multi-stage gear meshing in shearer cutting part
Under the influence of the elastic deformation of the supporting system, the axes of the parallel gears are skewed in
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Substructure set of multi stage gear box coupling dynamic model
According to the different coordination relationship of the interface of each substructure, the connection types between the corresponding nodes can
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Minimum entropy deconvolution of gearbox
Med is to eliminate the influence of transmission path by optimizing the filter. xn(n = 1，2，… , n) is the
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Example and mathematical model of optimum design for minimum center distance of two stage spur gear
As shown in the figure, it is known that the input power P1 of the high-speed stage of the two-stage
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Substructure decomposition of multi stage gear box coupling dynamic model
The cutting part is divided into rocker box, fixed shaft gear, gear shaft, cutting drum, planetary gear train and cutting
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Example and mathematical model of optimum design for minimum center distance of two stage spur gear
As shown in the figure, it is known that the input power P1 of the high-speed stage of the two-stage