电液推杆是一种集机、电、液为一体的液压驱动机械手，适用于需要往复推拉直线（或往复旋转一定角度）运动，也可用于需要上升、下降或夹紧工作物的场所，并可实现远距离危险地区的集中或自动控制。
电液推杆的油路中，设计了自锁阀。
In the oil pipeline of the electrohydraulic push rod, a self-locking valve is designed.
根据电动、电液推杆控制原理调试盲板阀换向状态。
Debug the reversing of the valve according to the control principle of electric and electric hydraulic draw stem.
本文介绍了电液推杆的优点及电液推杆在矿山中的应用情况，通过实践证明，取得了较好的经济效益。
This paper introduced the merit of electric hydraulic pushing pole and applied condition in mines. Based on practice, the pushing pole remarkable economic benefits have been obtained in these mines.
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