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机械工业部天津工程机械研究所根据城乡建设对小型液压挖掘机需求量的日益增长,设计了一种机动灵活的轮胎式液压挖掘机,由长江挖掘机厂试制后,经过1000多小时挖掘试验和1500公里行走试验,1985年12月通过部级鉴定。WLY25型单斗全回转轮胎式液压挖掘机(图1)可根据作业需要换装正铲、反铲和起重等多种工作装置,适用于挖掘Ⅱ～Ⅲ级土壤。该机可用来开挖沟槽、基坑,回填土方,平整场地等。具有生产率高、使用可靠、操纵轻便灵活、转移工地方便等优点。
The Tianjin Institute of Construction Machinery of the Ministry of Machinery Industry, based on the growing demand for small hydraulic excavators in urban and rural construction, has designed a flexible and flexible hydraulic excavator that was excavated from the Changjiang excavator factory after more than 1,000 hours of excavation and testing. The 1500-kilometer walking test was passed in December 1985 and passed the ministerial appraisal. WLY25 single bucket full-rotary tire hydraulic excavator (Figure 1) can be based on the need to change the loading shovel, backhoe and lifting a variety of work devices, suitable for excavation II ~ III soil. The machine can be used to excavate trenches, foundation pits, backfilling earth, leveling sites, etc. It has the advantages of high productivity, reliable use, light and flexible operation, and convenient site transfer.