小小垃圾桶、搞出大名堂张永江,原是北京东城环卫局二队的一名只有小学六年级文化程度的垃圾装卸工,20多年来,他爱岗敬业,不断刻苦钻研,先后有30多项技术革新及发明成果。其中“起重设备平衡定向装置”、“间歇式自动翻转三画面显示装置”等七项获得国家专利。据不完全统计,上 Small trash can come up with Daming Hall of Zhang Yongjiang, was originally the Beijing Dongcheng Sanitation Bureau of the second team of only a sixth grade primary school garbage loading and unloading workers, more than 20 years, he dedication, constant study, there have been 30 A number of technological innovations and inventions. Among them, “lifting equipment balance directional device”, “intermittent automatic flip three-screen display device” and other seven won the national patent. According to incomplete statistics, on