Research results of dynamics model of gear transmission system under fatigue pitting of tooth surface
He et al. extended the two-stage gear reducer dynamics model on the single-stage gear dynamics model, and studied the influence […]
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Research results of dynamics model of industrial gear transmission system
Zhou jian magnitude to a gear mesh type bending – twist mechanical model considering the meshing stiffness and error of
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Dynamics model of gear transmission system
For gear transmission system dynamics by physical model to the transformation of the mathematical model, and to establish the mathematical
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Establishment of contact finite element model of low speed and heavy load gear
The low-speed and heavy-duty gear assembly established by SolidWorks is exported to. Step format and imported into ANSYS Workbench. The
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Prospect of rocker box and multistage gear transmission of shearer cutting part
A series of research work has been carried out on the dynamic modeling analysis and dynamic performance optimization of multi-stage
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Innovation of rocker box and multistage gear transmission of shearer cutting part
① Aiming at the problems of modeling difficulty and low computational efficiency of multi-stage gear system dynamics, an efficient general
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Parametric modeling and dynamic meshing analysis of low speed and heavy load gears
In the dynamic analysis of gear, the modeling process is very important. With the development of science and technology, there
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Crack propagation law of low speed and heavy load gears
The research content of gear crack and the research status of gear stress intensity factor at home and abroad are
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Research on rocker box and multi-stage gear transmission of shearer cutting part
With the continuous increase of mining depth, the geological characteristics of high ground stress and strong mining disturbance in deep
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Research status of stress intensity factors for low speed and heavy duty gears
Under the action of long-term repeated load, gear is easy to produce fatigue microcracks, which leads to the decrease of
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Dynamic characteristics and crack propagation path of low speed and heavy load gears
In order to solve the problems of dynamic characteristics and crack propagation path of low-speed and heavy-duty gears, the main
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Structure optimization of rocker arm box of shearer cutting part and 3D topological modification of multi-stage gear
The dynamic performance of shearer cutting part is improved from two aspects of rocker box structure optimization and multi-stage gear
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Coupling dynamic characteristics of multistage gear transmission and rocker box
By means of natural vibration analysis and system dynamics simulation, the coupling dynamic characteristics of multi-stage gear transmission and rocker
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Research on the method of gear crack propagation
There are many methods to study the crack propagation of gears. The following summarizes four common methods to simulate the
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Research status of low speed and heavy load gear crack
The crack propagation of gear can be divided into three stages: the first stage, crack initiation stage; The second stage
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Dynamic characteristics of multi-stage gear box coupling at different speeds
The dynamic response characteristics of shearer cutting part under rated working condition are analyzed, and the dynamic deformation and dynamic
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Wide application of low speed and heavy load gear transmission system
Low speed and heavy load gear transmission system is widely used in every lifeline of national economy, such as gantry
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Dynamic characteristics of multi-stage gear transmission box coupling in shearer cutting section
Shearer cutting part is a rocker gear box. The rocker box is a hollow cantilever structure, the free end of
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The gear dynamic model adopts the hypothesis of small deformation
In dynamic modeling, the cutting part of shearer is divided into two parts: transmission system and rocker box. The transmission
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Dynamic modeling of multi-stage gear transmission box coupling for shearer cutting part
Dynamic modeling is the basis of gear system dynamics research. From the perspective of gear dynamics, the cutting part of
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Technical route of dynamic research on multistage gear of shearer cutting part
Shearer cutting part is a multi-stage gear transmission system supported by rocker box, which has many parts and complex structure.
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Problems in dynamic research of multi stage gears in shearer cutting section
Based on the multi-body dynamics commercial software ADAMS simulation platform and considering the dynamic characteristics of the rocker box and
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Study on dynamics of multistage gears in shearer cutting section
The research on gear dynamics of shearer cutting part started late at home and abroad, and the main achievements were
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Research on tooth profile modification of multistage gears
Profile modification is to modify the helical angle or axial profile of the gear according to the predetermined law according
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Research on profile modification of multistage gears
Profile modification is to remove trace material from the tooth surface along the direction of tooth height, so as to
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Bending fatigue test method of low speed and heavy load gears
The bending fatigue test was designed and completed according to GB / T 14230-1993. In the bending fatigue test, according
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Dynamic performance optimization of multistage gear system
The design of gear system is not limited to the static strength check, but the important content is to consider
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Problems in dynamic modeling of multistage gear transmission system box coupling
It should be noted that the dynamic substructure method is mainly convenient to establish the coupling dynamic model of the
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Research and development of multi stage gear transmission system box coupling dynamic modeling
Choy et al established the dynamic model of the transmission system by using the transfer matrix method and the dynamic
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Dynamic modeling of multistage gear transmission system box coupling
With the deepening of research and the improvement of computer performance, the research object of gear system dynamics has experienced
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Problems in gear meshing excitation modeling
There are some problems in gear meshing excitation modeling ① The time-varying meshing stiffness and static transmission error are scalars
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Multi stage gear meshing excitation modeling
As an elastic mechanical system, gear system produces vibration and noise problems under dynamic excitation. The dynamic excitation is the
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Research status and problems of gear system dynamics
Gear system is the most widely used transmission system in all kinds of mechanical equipment. Its mechanical behavior and working
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Research on fatigue damage of low speed and heavy load gears by foreign scholars
Shi uses the software perdynamic (PD), which is used to analyze the crack propagation in the fracture of engineering materials.
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Research significance of multi-stage gear transmission dynamics of shearer cutting part
The cutting part is the core part of the shearer’s function of cutting coal and loading coal. It is mainly
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Fatigue crack growth behavior of low speed and heavy load gears
Huang believes that the dispersion of fatigue crack growth behavior should be accurately characterized in the structural integrity assessment based
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Multi stage gear transmission of shearer cutting part
Coal is China’s basic energy and important chemical raw materials. Coal industry is an important basic industry related to national
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Research on fault mechanism of low speed and heavy load gear
Heavy duty gear is the core component of large equipment transmission, which is widely used in many industries such as
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Optimal design of bevel gear transmission mechanism
The function of bevel gear is to transmit the motion and power between two intersecting axes. Similar to cylindrical gears,
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Finish machining of super large modified gear
From the point of view of the purpose of designing super large modified gear (medium hard tooth surface and medium
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Rough machining of super large modified gears
According to the characteristics and cutting pattern of hobbing super large modified gear, the maximum wear of hob occurs at
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Rotation direction matching of super large modified gear hob
It can be seen from practice that in hobbing large modulus multi tooth number gears, because of the large cutting
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Study on carburizing process of low speed and heavy gear
The traditional gas carburizing method uses a single liquid (such as kerosene) carburizing to control the surface carbon content and
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Datum point and tangent point of axial displacement of super large modified gear hob
The principle of axial displacement method: (1) when the hob moves along the cutter bar, the thread of cutter teeth
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Flame surface hardening method for low speed and heavy load gear with soft tooth surface
In heavy mining and building materials machinery, a large number of large gear pairs with open drive are used. The
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Theoretical length of hob for cutting metal in gear slot
When the standard hob is used to hobbing the super large modified gear, the phenomenon of non involute tooth profile
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Carburizing and quenching heat treatment process for low speed and heavy duty gears
Mining machinery, transportation machinery and other low-speed heavy-duty gear, require the use of high reliability carburized hardened gear after grinding.
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Hobbing super large modified gear with standard hob
In order to improve the load-bearing capacity and service life of low-speed, heavy-duty, large modulus, multi tooth number and large
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Solutions to failure of asteroid gearbox
Due to the requirements of structure and economy, the planetary carrier must be designed with the structure of thin left
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Failure analysis of asteroid gearbox
In the early stage of new product development, there must be sufficient simulation analysis and calculation and a large number
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Structure and problem description of asteroid gearbox
The main components of planetary transmission include sun gear, planetary gear, ring gear, planetary carrier, pin shaft and bearing, which
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Failure analysis of an asteroid gearbox
Asteroid gear has compact structure and high reliability. It is usually used for reducing transmission in industrial fields (rotary, walking,
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A method for measuring axial parallelism of gear pair in gearbox
Gear transmission is a device that transmits motion and power by gear pair. It is the most widely used mechanical
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Gear fault classification based on morphological wavelet and fuzzy entropy
When the transmission gear has cracks, broken teeth and other faults, it will produce impact characteristics. Because of the impact
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Application of morphological wavelet and fuzzy entropy in gear fault classification
As one of the key assemblies of armored vehicle transmission system, the gear failure of transmission often leads to the
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Evolution process and dynamic response analysis of gear fatigue pitting
Through the gear contact fatigue test-bed, the evolution process of gear fatigue pitting phenomenon and the vibration response characteristics of
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Stress intensity factor and J-integral of helical gear crack
The finite element software is used to simulate the helical gear with three-dimensional cracks, and the values of stress intensity
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Application of high efficiency cutting tool in engineering gear machining
Using coating technology In the process of construction machinery gear processing, coating technology has a very important application, and 70%
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Experimental study on fatigue pitting corrosion of spur gears
Through the gear contact fatigue test-bed, the evolution process of gear fatigue pitting phenomenon and the vibration response characteristics of
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Application of high efficiency cutting in gear grinding engineering
In the process of gear processing of construction machinery, another important link is gear grinding. In the process of gear