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随着国民经济的发展,中小型压力机的使用数量也大大增加。到目前为止,全国每年投入生产使用的压力机有数千台之多。但是,在使用中也出现一些问题。在这些问题中,用户对剪切式压塌块的使用寿命低反映强烈,需要加以研究解决。压力机的保险装置有两种,一种是传动扭矩的保险装置;另一种是压力超载的保险装置。对于压力超载保险装置,在开式压力机中,绝大部分是采用剪切式压塌块。如果使用
With the development of the national economy, the number of small and medium-sized presses is also greatly increased. So far, thousands of presses have been put into production each year throughout the country. However, there are some problems in use. Among these problems, the user’s low life expectancy of shearing collapsing block reflects strongly and needs to be studied and solved. There are two kinds of press safety devices, one is the torque transmission of the insurance device; the other is the pressure overload of the insurance device. For the pressure overload insurance device, in the open press, the vast majority of shear collapsed block. If used