LOAD SENSING TYPE AUTOMATIC HYDRAULIC FEEDING APPARATUS FOR HYDRAULIC TOOLS

摘要

PURPOSE: A load-sensing type automatic hydraulic feeding apparatus for hydraulic tools is provided to enhance the operation response of the hydraulic tools by actively controlling a hydraulic motor for driving a hydraulic pump based on the hydraulic pressure differences between an input terminal and an output terminal. CONSTITUTION: A load-sensing type automatic hydraulic feeding apparatus for hydraulic tools comprises a first hydraulic detecting part(151), a second hydraulic detecting part(152), and a control part(210). The first and second hydraulic pressure detecting parts are installed in an input terminal(141) and an output terminal(142) of an internal pressure hose. The control part calculates the differential pressure of two hydraulic pressure signals detected in the first and second hydraulic pressure detecting parts to control an electric motor(110). [Reference numerals] (210) Control part