A Develop of Hydraulic Controlling Device of Working Portion in Laser Leveling Machine

摘要

The leveling precision of the laser land leveling machine mainly depends on the hydraulic controlling device. The optimized power matching and perfect work characteristics of the hydraulic system are of great importance in practical application. Based on the hydraulic system study on the machines at present in the world, according to the style, the characteristics of middle power tractor hydraulic system often used in our country, a hydraulic controlling device with simple structure for the laser land leveling machine is developed. It has been testified through experiment that it has perfect static and dynamic properties as well as high efficiency, less power consumption and better working stability without static spade drop.