The invention belongs to the technical field of automobile parts, and particularly relates to a rotary valve type double-loop semi-integral hydraulic power-assisted steering gear which comprises an input shaft and a steering screw, a valve element is arranged at one end of the input shaft and arranged in a valve element hole of the steering screw, and the other end of the input shaft is connectedinto an upper cover and an inner cavity of a limiter assembly. The upper cover is connected with the limiter assembly in a matched mode, an inner cavity of the steering screw is hollow, a torsion baris installed in the inner cavity of the steering screw, one end of the torsion bar is connected with the end of a valve element of the input shaft, and the other end of the torsion bar is connected with the end of the steering screw through a cylindrical pin. The rotary valve type double-loop semi-integral hydraulic power-assisted steering gear has the advantages that due to the adoption of a rotary valve structure, the free clearance of the steering gear is reduced, and a vehicle is more convenient to drive; the torsion bar is adopted as an elastic element, compared with an existing old structure, a belleville spring is omitted, the phenomenon of screw clamping stagnation does not exist, the torque of the steering gear is greatly improved, the hand feeling of the steering gear is better,and the aligning capacity of the steering gear is better.
本发明属于汽车零部件技术领域,尤其是涉及一种转阀式双回路半整体液压助力转向器,此转向阀包括输入轴和转向螺杆,输入轴一端具有阀芯,且此阀芯置于转向螺杆的阀芯孔内,输入轴的另一端连接于上盖和限位器总成的内腔中,上盖和限位器总成配合相连,转向螺杆的内腔中空,其内腔中安装有扭杆,扭杆的一端与输入轴的阀芯端部相连,另一端通过圆柱销与转向螺杆的端部相连;优点在于:转阀式双回路半整体液压助力转向器,由于采用了转阀结构,转向器的自由间隙减少,车辆更便于驾驶;采用扭杆作为弹性元件,相对于以前的老结构,取消了碟形弹簧,不存在卡滞螺杆的现象,转向器的力矩大大改善,使转向器的手感更好,转向器的回正能力更好。
Rotary valve type double-loop semi-integral hydraulic power-assisted steering gear
一种转阀式双回路半整体液压助力转向器
2021-03-19
Patent
Elektronische Ressource
Chinesisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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