The results of the output on the overall structure of the meshing analysis software are completed to complete the design work. The specific design idea is: the initial parameters are input into the computer by the designer according to the actual experience. After calculation and analysis, the calculation result is displayed on the screen in the form of a graphic curve, and then the designer observes the graphic curve according to the design requirements. Analysis, if the results have met the design requirements, the design is aborted, and the results are output; otherwise, the initial parameters are modified according to the design requirements, and then re-entered into the computer for calculation and analysis until a satisfactory result is obtained. The flow chart is as shown.
The design of the oil circuit of each institution shall be specifically treated according to the specific characteristics of each branch. According to the analysis of the movement and stress status of each mechanism, the stable locking of the stable supporting cylinder can be realized by setting the two-way hydraulic lock; since the telescopic mechanism also has the functional requirement that the locking load does not slip when the vehicle is transported, the telescopic cylinder must be added. The stable balance lock with better locking effect, the smoothness of the telescopic process and the impact of the in-position impact are mainly realized by the main control valve; the lifting cylinder of the turning mechanism is the worst, and the force and direction of the pushing process are both Changes, from the perspective of safety of use, even if the system unloads the pressure, the mechanism must achieve random locking at any position. Therefore, the oil circuit should be equipped with a two-way balance control valve for the stability and locking of the mechanism motion control, while the series hydraulic lock is used as double protection. Make sure the lock is effective. As for the loading and loading impact problem, it can be solved by the oil control of the stroke unloading. The filtration of the oil and the selection of the oil play a crucial role in the reliable operation and service life of the hydraulic system. Because it is a military equipment, the operating temperature range of the oil should cover the ambient temperature requirements of the product, and a wide temperature temperate hydraulic oil should be used. In order to minimize the damage of the system caused by oil pollution, the system must be equipped with double fine filtration, namely high pressure fine filtration of the pump outlet and low pressure fine filtration of the total return port.
Practice has proved that this method has obvious effects on the reliable use of the system. The control and protection of the hydraulic system is critical to the safe operation of the dump truck system. The logical relationship of each organization's movement should be closely analyzed. All mechanism actions should be equipped with detection switches. The associated actions must have electrical interlock protection to avoid unsafe hidden dangers caused by misoperation. Conclusion The performance and function of the self-dumping trucks are largely determined by the perfect design and application of the hydraulic system. The general technical requirements for hydraulic system design are not described in detail. Mainly combined with the specific functional characteristics of the dump truck system, several aspects that should be paid attention to in the design of hydraulic system are put forward. It is well solved and is effective for improving the overall performance of the system. In the engineering practice, the system scheme has been applied, and the whole machine has undergone severe test evaluation, and the effect is ideal.
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