It can be seen from the area curve in Figure 3-12 that 05mm is the starting acceleration and braking deceleration phase of the motor, and this section directly affects the starting and braking performance of the rotation, so it is more important to study the performance of this section. Because the displacement of the 4mm and 5mm spool is the turning point of the valve area curve, this chapter takes the calculation model of the flow field of the spool displacement of 4mm and 5mm for simulation analysis.
In order to obtain the curve of the axial force and lateral force of the multi-way valve of the excavator with the displacement, the spool of the multi-way valve of the excavator is modeled and meshed under different displacements of the spool, and then the flow field simulation is performed. , To obtain the axial force and lateral force corresponding to the displacement of the multi-way valve spool of the excavator. According to the structural parameters of the multi-way valve rotary joint throttle of the excavator and different main spool displacements, a variety of numerical analytical models have been established. Due to too many models, some model parameters are listed in Table 41.
Numerical analysis of flow field of multi-way valve spool of excavator
Calculation Model and Boundary Conditions similar). And the geometric model omits the fillet groove of the valve body.Due to the symmetrical structure, only half of the flow channel needs to be modeled and meshed. Use local grid refinement, others use coarse grid.
