桥式起重机是我厂主要产品之一。对于桥架结构,过去虽作过一些不同程度的改革,如单腹板,三角形,单主梁等,但是由于各方面的原因,未能成批投入生产,所以总的说来,桥式起重机的桥架结构还仍然保持箱形的双主梁。一九七○年初,我厂广大革命职工和工程技术人员在厂党委的领导下,进一步批判反革命修正主义工业路线,从而提高了广大革命群众在无产阶级专政下继续革命的觉悟,遵照 Bridge crane is one of our main products. For the bridge structure, although in the past some changes have been made to some extent, such as single webs, triangles, single girders, etc., but due to various reasons, failed to put into mass production, so in general, the overhead traveling crane The bridge structure still holds a box-shaped double girder. In the early 1970s, under the leadership of the factory party committee and committee, a large number of revolutionary workers and engineers and technicians in our factory further criticized the counter-revolutionary revisionist industrial line, thereby enhancing the awareness of the vast revolutionary masses in continuing their revolution under the dictatorship of the proletariat and in accordance with the