摘要
针对旋转配流盘式液压变压器在变压范围、流量脉动以及噪声控制上的不足,提出一种小流量脉动低噪音液压变压器方案。分析目前液压变压器的主要特点,基于一种旋转斜盘式双缸体液压变压器方案,通过增加柱塞数量并结合斜盘转角的初始位置控制,达到减小流量脉动和噪声的效果。分析斜盘转动的转角及其阻力矩变化规律,并进行变压比样机试验测试。结果表明,旋转斜盘式液压变压器宜将上止点与A口中点重合时作为斜盘初始位置,在斜盘转角小于100°时,新型液压变压器使得输出流量不均匀系数减小了约40%,随着转角的继续增大,输出流量不均匀系数趋于一致,试验结果表明新方案可实现较大范围的变压比。
To overcome the shortages of the rotating valve plate hydraulic transformer in pressure ratio, flow pulsation and noise, a novel hydraulic transformer with small flow pulsation and noise is presented. The characteristics of the modem hydraulic transformer are analysed. A novel hydraulic transformer with a rotating swash plate and double cylinders are investigated. Small flow pulsation and noise are achieved by increasing the piston number and the initial position control of the swash plate angle. The characteristics of the swash plate angle and the moment of resistance when rotating the swash plate were investigated. The pressure ratio was tested by a prototype. The initial position of the swash plate should be set in the position where the middle of the port A and the top dead centre are superposed. When the rotary angle of the swash plate is below 100~, the uniformity coefficient of the output flow reduces about 40% in the novel hydraulic transformer. However, when the rotary angle of the swash plate continues to become larger, the uniformity coefficient will become same. The measured results indicated that the novel configuration can realise a wider pressure ratio range.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2013年第22期144-149,共6页
Journal of Mechanical Engineering
基金
'十二五'国家部委基础科研资助项目(B2220110005)
关键词
液压变压器
变压比
不均匀系数
噪声
控制角度
Hydraulic transformer Pressure ratio Uniformity coefficient Noise Control angle
