一种液压缸锁紧装置应用分析

Application Analysis of Mechanical Locking Device for Hydraulic Cylinder

在工程机械和工业机械液压系统中,由于活塞在普通液压缸中依靠液压油支撑,没有精确限位,常常会因为液压油的泄漏或者热胀冷缩,而导致活塞移动位置,从而引起相关运动机构改变位置,使其不受控。因此在需要精确定位的工况下,常常要求液压缸被机械锁紧。本文针对了一种新的液压缸机械锁紧装置应用中存在的问题,分析了锁紧装置的原理和问题产生的原因,同时提出了合理的解决方案。本文的分析对工程机械中其他机械液压锁紧装置,也有一定的参考意义。

In the hydraulic system of construction machinery and industrial machinery,because the piston relies on the hydraulic oil support in the ordinary hydraulic cyliner,there is no precise limit.The piston changes the position due to leakage of hydraulic oil or thermal expansion and cold contraction.It causes the relevant mechanism to change the position,making it out of control.Therefore,under the condition of accurate positioning,the hydraulic cylinder is often required to be mechanically locked.The paper aims at the problems existing in the application of a new mechanically locking device for hydraulic cylinder,analyzes the principle of the locking device and the causes of the problems.The analysis of this paper also has certain reference to other mechanical hydraulic locking devices in the construction machinery.