Split design method for non-equivalent structural superposed valve plate of rebound valve of shock absorber
A design method and shock absorber technology, applied in the direction of shock absorbers, shock absorbers, springs/shock absorbers, etc., can solve the problems of difficult design to obtain accurate and reliable non-equi-structured stacked valve plate thickness and number of plates.
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Embodiment 1
[0078] Example 1: The structure diagram of a shock absorber piston assembly and recovery valve is as follows figure 2 As shown, among them, the piston body 1, the piston rod 2, the piston hole 3, the recovery valve plate 4, the limit retaining ring 5, the fastening nut 6, and the normally open orifice 7. The speed characteristic curve required by the shock absorber design is as follows Figure 5 Shown, the return stroke maximum valve opening speed =1.0m / s, the required maximum valve opening damping force F dk2 =1650N; piston rod diameter d g =20mm, inner diameter of piston cylinder D h =28mm; Piston average clearance , piston gap length, Eccentricity =1.0; oil density , kinematic viscosity = m 2 / s, dynamic viscosity ;Physical length of the piston bore =9.0mm, the angle is 52°, piston bore diameter =2.0mm, number n h =4; the radius of the inner circle of the valve plate =5.5mm, outer circle radius =8.5mm, valve port radius ,Poisson's ratio ...
Embodiment 2
[0133] Embodiment 2: The structural parameters and oil parameters of a shock absorber are the same as those in Embodiment 1, except for the maximum valve opening speed point of the shock absorber V k2 =1.20m / s, the damping force of restoring valve opening is F dk2 =2000N, the speed characteristic curve required by the shock absorber design is as follows Figure 7 As shown, the design thickness of the restored valve plate h =0.30046mm, the area of the normally open orifice of the recovery valve A 0 =0.8mm 2 , usually the width of the through hole b A0 =2.0mm, the number is n A0 =4.
[0134] The calculation steps of Embodiment 1 are adopted, namely:
[0135] (1) Determine the maximum pressure on the recovery valve plate when the shock absorber is at its maximum opening :
[0136] Step A: Determine the piston gap throttling pressure at the maximum valve opening of the shock absorber and traffic :
[0137] According to the maximum valve opening speed The poi...
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