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内藏减速器式液压马达,广泛用于日本产的液压挖掘机的行走装置上。它集液压马达、减速器、液压制动器、液压制动阀于一体,简称GM马达,具有高效能、结构紧凑的特点。但一旦失效,不但使挖掘机因无法行走而停工,而且价格昂贵(进口件为每件8～9万元),因此,正确使用、维护及设法自行修复,具有重要的现实意义。 一、使用 GM马达与回转液压马达、液压泵、液压缸等液压元件共同组成液压挖掘机的液压系统。除了按液压元件共同的使用规则使用外,还应遵守其特殊的使用规则:
Built-in reducer-type hydraulic motor, widely used in Japan’s hydraulic excavator walking device. It sets the hydraulic motor, reducer, hydraulic brakes, hydraulic brake valve in one, referred to as the GM motor, with high performance, compact structure. However, once it fails, it will not only stop the excavator from being unable to walk, but also be expensive (the imported parts are 80,000 to 90,000 yuan each). Therefore, proper use, maintenance and seeking to repair themselves are of great practical significance. First, the use of GM motors and rotary hydraulic motors, hydraulic pumps, hydraulic cylinders and other hydraulic components together hydraulic excavator hydraulic system. In addition to the use of hydraulic components in common use rules, but also to comply with its special rules of use: