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　　为使制动安全牢靠，防止意外，添加液控单向阀，即液压锁，保证在液压管线意外爆裂时能安全自锁，安装了超载声控报警器，用以差异超载或设备毛病，保护与常见问题对机械化施工企业来说，工程机械技能状况的杰出与否是企业能否正常出产的直接要素。