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For taking the pc200-7 hydraulic excavator crawler roller finite element analysis for example, it is first to modeling a mechanical model. When the excavator in extreme positions is respectively supported by one, two, three, four, five, or six rollers and the several groups of different conditions are simulated by using the ANSYS, and the results are sorted out, the variation of parameters and pictures...
Basing on the basic principle of the machine movement, the movement and dynamic performance analysis of bias large flow high-pressure reciprocating pump are done. The location, velocity distribution and acceleration of the multi-cylinder are listed. Thus, the calculation model of the equivalent resistance torque is simplified according to the device operating characteristics. So the equivalent torque...
The lubrication of bearings is directly affected by the flow properties of the liquid lubricant. One key feature of lubricant is its viscosity distribution in the bearing. The distribution is dependent on the adsorbent properties of the surface and the velocity distribution of the lubricant. This paper is only connected with the velocity analysis on the cross-gap flow. Because of increasing the speed,...
Basing on the basic principle of the mechanical movement, the movement and dynamic performance analysis of Opposed Reciprocating Ten-Plunger Pump are done. The equations about position, velocity and acceleration of the 10 plungers are deduced. The motion characteristics of each plunger are calculated. Thus, the calculation model of the equivalent resistance torque of the-plunger is simplified. The...
The relationship between performance and ambient temperature of the development of low cemented friction materials has been studied, the influence of the changes of molding ambient temperature to the frictional properties and mechanical properties of materials ha been analysed by testing in the molding process, the rule that friction material properties with mold variation of ambient temperature is...
The characteristics of unlimited short journal bearing has been analyzed by using the equivalent viscosity correction model under thin film lubrication conditions. The interaction between the lubricant and the surface within a very small gap has been seriously considered. The changes of regular pattern of lubricant properties are comprehensive analyzed and researched. Unlimited short journal bearing...
Low-temperature cementing and friction material which is developed has been analysed through experiment in this paper. Under other same conditions, the key parameters at the process of forming have been studied in an experimental and theoretical way. And the variation of friction coefficient and wear rate of it after forming and the best control parameters, which play an important and guiding role...
Automotive friction plate processing technology were reviewed and put forward a low-temperature processing method of cementation. At the same time does experimental analysis and theoretical research to the problems of the prelude to the new processing methods. That have obtained the best process method of and parameters, base on conducting a large number of experiments, and provides the data to support...
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