Perhaps every Yingxuan user will feel that Yingxuan loader is a second-generation series or a new-generation H series, whether it is a 2 ton model or a 6 ton model, and has a constant performance that is efficient and reliable. Flexible movement, small turning radius and high work efficiency are the specific performance of this performance. For the key reason why Yingxuan loader can maintain this performance, it is not the "optimal matching of power system and hydraulic system". On the one hand, the continuous optimization of the loader working device, especially the design of the medium differential wheelbase, has made the flexibility of the whole vehicle improved for generations; On the other hand, the rational configuration of the full hydraulic steering gear is also an important reason for the excellent performance of the Yingxuan loader steering system. Below, Xiaobian will simply and neatly on the last plate of "dry goods". For the full hydraulic steering gear of Yingxuan loader, let's talk about it. At present, three typical forms of vehicle steering mechanisms are mechanical steering mechanisms, hydraulic assist steering mechanisms and full hydraulic steering mechanisms. The steering mechanism of Yingxuan loader is a full hydraulic steering mechanism. The core control component of this mechanism is the full hydraulic steering gear, which has the advantages of light operation, flexible steering and convenient installation and arrangement. According to the functional form of the valve core, the full hydraulic steering gear can be divided into open core, closed core, load sensing and coaxial flow amplification. The steering gear used by Yingxuan is mostly load sensing. The full hydraulic steering gear is composed of a valve core, a valve sleeve, a valve body, a fixed rotor, a linkage shaft, a dial, and a spring piece, and the specific combination is: The valve core, the valve sleeve and the valve body constitute a follow-up rotary valve to control the direction of the oil flow; The rotor and the stator form a pair of cycloidal pin wheel engagement pairs, which act as a metering motor when rotating, ensuring that the amount of oil flowing into the steering cylinder is proportional to the rotation angle of the steering wheel; Connecting the linkage shaft and the dial of the rotor and the valve sleeve to ensure the synchronization of the rotor and the valve sleeve during steering; The function of the spring piece is to ensure that the rotary valve returns to the neutral position when not turning. The specific working principle of the full hydraulic steering gear is the specific process of steering function realization: When the driver operates in the cab, the steering wheel rotates to drive the spool to the left or right, and the spool will overcome the elastic force of the spring piece between the sleeves, so that the spool produces a certain amount of rotation angle with respect to the valve sleeve; When the angle of rotation is >1.5~2°, the oil groove of the valve core and the valve sleeve in the closed state begins to communicate, and as the angle between them increases, the opening of each matching oil groove also increases, so that the steering gear enters The oil of the oil port passes through the valve core sleeve and the oil distribution groove of the valve body, and then enters the volume chamber on the side of the meshing auxiliary side of the fixed rotor, so that the oil is metered and the planetary motion of the rotor relative to the stator is promoted; At this time, the oil from the rotor and the stator passes through the valve sleeve and enters a cavity of the steering cylinder from the oil port, so that the piston rod of the oil cylinder is extended or contracted, and the steering wheel is driven to rotate. The oil in the other chamber of the cylinder enters the valve sleeve through the oil port, and then returns to the oil tank through the oil return groove of the valve core, thereby realizing the steering function of the loader. PS: Is it so easy to understand [dry goods] is not very chewy, if you have learned, don't forget to transfer to the TA waiting for knowledge. (This article is from Yingxuan)
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