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为了检验大马力推土机的支重轮、引导轮和托轮(三轮)总成的密封性能,我们采用气动量仪和浸入水中打压试验相结合渗漏试验方法,确保了“三轮”总成的出厂密封性能,效果很好。浮标式气动量仪一般用于测量零件尺寸和部分形位公差大小,也可用来测量密封性能。如图1所示,浮标式气动量仪(单管)固定在支重轮气动压床的一端,压缩空气由管2通入,在量仪出口处经管3与压床压头9连接,压头
In order to test the sealing performance of the bulldozer’s roller, guide wheel and roller (three-wheel) assembly, we used a combination of a pneumatic gauge and a submerged-water pressure test to ensure a three-wheel assembly. The factory sealing performance is very good. The buoy-type pneumatic measuring instrument is generally used to measure the size of a part and the tolerance of part of the geometrical position, and can also be used to measure the sealing performance. As shown in Fig. 1, a buoy-type pneumatic measuring instrument (single pipe) is fixed on one end of the pneumatic press of the roller, the compressed air is passed through the pipe 2, and the pipe 3 is connected to the presser head 9 at the outlet of the measuring instrument. head