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活塞柱塞式伸缩液压油缸获1997年我国专利局实用新型专利技术(ZL9622925.7)。 此型液压油缸既有活塞,又有柱塞。活塞杆为多节结构,各节均可由油液压力推出,又可由自身重力或油液压力收回。具有工作油压低、单双作用、行程长、平稳性好、漏油及磨损小、节能(30％)、结构紧凑、占用空间小等特点。 目前,可根据实际工作需要,设计成:推力为1、1.5、3、5、10、15、20t,行程为300、500、800、1000mm等几种规格。
Piston plunger retractable hydraulic cylinder patents by the Chinese Patent Office in 1997 patented technology (ZL9622925.7). This type of hydraulic cylinder both piston and plunger. Piston rod for the multi-section structure, each section can be launched by the oil pressure, but also by their own gravity or oil pressure back. With low hydraulic pressure, single and double role, long stroke, good stability, oil spills and wear small, energy-saving (30%), compact structure, small footprint and so on. At present, according to the actual work needs, designed as: thrust for 1,1.5,3,5,10,15,20 t, travel 300,500,800,1000 mm and other specifications.