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一、前言我国以前生产的一些高压油泵,绝大多数为仿制产品,结构陈旧、寿命短,品种繁多,规格不全,标准化、通用化程度低,工时消耗大,成本高。例如,天津市高压泵阀厂生产一台ГА351曲轴泵要600多工时,泵重达600多公斤;生产一台T50SGy13—1(仿苏НП型)泵消耗近900工时,泵重达350公斤。由于液压机工艺性的种种要求,前生产的多种不同结构的泵还远不能满足液压机生产的需要,严重地影响了液压机的发展。
I. Introduction Some of the high-pressure oil pumps previously produced in our country are mostly imitation products with outdated structures, short life, wide variety, incomplete specifications, low standardization, low degree of generalization, high working hour cost and high cost. For example, Tianjin High-pressure pump valve factory to produce a ГА351 crankshaft pump to more than 600 hours, the pump weighs more than 600 kilograms; production of a T50SGy13-1 (imitation Su-¾ type) pump consumes nearly 900 hours, the pump weighs 350 kg. Due to the various technical requirements of the hydraulic machine, the pump with many different structures manufactured before is still far from meeting the needs of the hydraulic machine and seriously affects the development of the hydraulic machine.