trench work

Development of WG-55 ditcher;

WG—55型挖沟机的研制

A ditcher cutter for frozen soil and frozen soil with stone is developed.

设计并研制成功一种适用于冻土及夫石冻土链式挖沟机的刀具，经室内和野外现场试验证明，其使用寿命达到１３０ｈ，切削速度和挖沟作业率可达４。

Development of Cable Trencher with Vertical Auger;

立式螺旋电缆挖沟机的开发

Connected with the research and development of the first unit of hydraulic crawler trencher, the solution of overall design calculation, the calculation of traveling power, the matching of the power between traveling and cutting, the allocation of track rollers, the calculation of recoil spring of track roller frame have been found.

结合国内首次履带全液压挖沟机的研发工作,本文主要解决了总体设计、行走功率的计算、切削功率与行走功率的匹配、支重轮布置、履带张紧装置预张紧力的计算等问题。