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提出了一种新的组合式无级变速传动方案——液力机械综合式无级变速传动 ,由综合式液力变矩器、链无级变速器、减速齿轮组及相应的操纵控制机构组成。用该传动方案改进设计拖拉机的传动系 ,设计出了具有良好性能的液力机械式无级变速器。通过液力变矩器可自动无级变速变扭以适应外界变工况作业 ;通过链无级变速器和负载换档可实现由驾驶员控制的无级变速 ,因而整车能实现可控自动无级变速 ,在外界负荷频繁变化条件下发动机始终工作在标定工况附近
A new combined continuously variable transmission scheme is proposed, which is composed of integrated hydraulic torque converter, chain continuously variable transmission, reduction gear set and corresponding steering control mechanism. Using the transmission scheme to improve the design of the tractor drivetrain, has designed a hydraulic mechanical CVT with good performance. Through the torque converter can be continuously variable torque to adapt to changes in the outside world variable working conditions; through the chain CVT and load shifting can be controlled by the driver CVT, so the vehicle can be achieved automatically controlled without Level speed change, under the conditions of frequent changes in external load, the engine always work in the calibration conditions