RECONFIGURABLE GREEN HYDRAULIC-MECHANICAL COMPOUND TRANSMISSION SYSTEMS BASED ON ROD-LESS HYDRAULIC CYLINDER AND TWO-STEPS FORCE AMPLIFIER WITH SELF-LOCKING FUNCTION

摘要

Four kinds of reconfigurable green hydraulic-mechanical compound force-amplifying systems with self-locking function are introduced in this paper. The systems are both formed by a rod-less hydraulic cylinder and a two-steps force-amplifying mechanism in which the first step force-amplifying mechanism is a toggle mechanism working in the position of over deadcenter, a toggle or lever mechanism is adopted as the second step force-amplifying mechanism. The working principles and mechanical calculating formulas of the systems are given as well. The distinct advantage of these devices is that with the functions of force-amplifying and self-locking provided by the first-step over dead-center toggle, the size of the piston in rodless hydraulic cylinder can be reduced obviously, at the same time a continuous force can be obtained through the force output component without hydraulic cylinder in working and any energy consuming, thus these systems have obvious advantages of saving-energy. In addition the results show that all these hydraulic-mechanical compound drive systems can be quickly reconfigured only by changing the second step forceamplifying mechanism, while the basic structure of cylinder assembly, piston assembly and the first step force-amplifying mechanism does not need to be changed. By this means the systems will get advantages such as low cost, high capability and flexibility, short empoldering period and man-hour in practice.