盘式充液阀

在锻压机、人造板机、弯板机等油压机的液压系统中,为了减小泵的容量,获得较快的空载进给速度,常需要设置功能类似于液控单向阀的充液阀。如图1所示,油压机在自重作用下,大柱塞缸内柱塞下降时,由于形成负压,柱塞腔则通过充液阀从油箱补油。当压板碰到工件,压力油从P 腔进入大柱塞缸,进行加压并保压时,充液阀处于闭锁状态。

一种新型大吨位锻造压力机液压系统的设计要点

文章以4000 t热模锻造压力机液压系统的设计为例,介绍了应用于当代高吨位压力机液压系统设计一种新的思路。该系统具有运行可靠,控制方便,自动化程度高的特点。

万吨级多板框陶瓷压机的安装技术研究

本文重点论述了KD16008A模腔式陶瓷板材压机的基本结构,安装工艺以及工装工具等。特别介绍适合陶瓷厂现场使用的安装工艺和方法,以便推广大吨位压机的应用。

Experimental and simulated studies on hydraulic buffering valve for ZF-4WG308 power-shift transmission

The structure and working principle of a hydraulic buffering valve for a power-shift transmission ZF-4WG308 were studied comprehensively, and a model of the hydraulic buffering valve was developed with AMESim. A bench test was conducted on a buffering valve for transmissions(ZF-4WG308) and the test results agree well with the simulated results. Further more, the influences of the key parameters of the valve on the buffering performance were also studied in details.