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我国开始研制液压支架用大流量安全阀只是最近几年的事情,尽管有些研究单位和生产厂家参照国外有限的资料,搞出了大流量安全阀的雏型,但由于设计方法的落后,加工制造水平低,试验手段跟不上,不可避免地造成设计生产出来的大流量安全阀动态性能达不到要求,使用起来不可靠.面对这种落后状况,有必要投入一定的人力、物力,从设计、制造、
Our country started to develop hydraulic support with large-flow safety valve only in recent years, although some research units and manufacturers refer to the limited information available abroad, come up with a prototype of large-flow safety valve, but due to backward design methods, manufacturing Low level, the test means can not keep up, inevitably caused by the design and manufacture of large flow safety valve dynamic performance fails to meet the requirements of unreliable. Facing this backward situation, it is necessary to invest a certain amount of manpower and material resources, from Design, manufacture,