Tractor parts track shoes are the largest number of easily worn parts on tractors and bulldozers. Its working conditions are relatively poor. It often has to be in the open air and in direct contact with soil and gravel, and withstand certain stress effects such as impact, tension, extrusion...
The finite element analysis and topology optimization design of tractor gearbox shell casting under static conditions are carried out. The shell structure load is simple and does not consider fatigue, durability, reliability and other multi-body dynamics design requirements. Therefore, the optimization results have great limitations: only static analysis and...
In order to ensure that the improved structure can meet the requirements of stiffness, strength and dynamic performance, it is necessary to conduct free modal analysis and static structural strength analysis on the tractor gearbox shell casting, and compare the results with the original structural results to test the...
According to the topology optimization calculation results, the casting mechanism of the original tractor gearbox shell is optimized and improved according to the principle of increasing the wall thickness or setting stiffeners in the red area and reducing the wall thickness or hollowing out in the blue area. The...
Due to the limitations of time, conditions and personal experience, there are still many deficiencies: (1). Mesh size of finite element model of gearbox shell casting of high-power tractor. The accuracy of the finite element model directly affects the accuracy of the calculation results. In this paper, a large...
In recent years, with the vigorous development of manufacturing industry and the acceleration of the diversification of product market demand, the traditional sand casting for the trial production of new products can not meet the needs of enterprises and markets. With the rapid development of 3D printing technology and...
Fig. 1 and Fig. 2 are displacement nephogram and stress nephogram of tractor gearbox housing casting under reverse working condition respectively. From the displacement cloud chart 1, it can be found that the deformation part under reverse gear condition is basically the same as that under first gear condition....
The displacement nephogram and stress nephogram of tractor gearbox shell casting under the first gear working condition are shown in Fig. 1 and Fig. 2. It is obvious from the displacement nephogram 1 that there are three main positions of deformation: position 1 is the connecting part between the...
Through CATIA, the 3D digital model of tractor gearbox shell casting is established, and the line 3D digital model is directly imported into HyperMesh finite element software for pre-processing operations such as geometric cleaning, meshing and boundary constraints. On this basis, the free mode calculation of tractor gearbox shell...
The die-free casting precision forming machine uses the milling method to complete the processing and forming of sand mold and sand core. Before processing, it is necessary to prepare sand blanks corresponding to different cores. The small batch manufacturing of tractor small parts needs to make sand billets of...