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松土器悬挂在推土机或平地机尾部,推土机或平地机可根据施工需要,在行进过程中,将松土器的松土齿下压插入作业面,进行松土作业,耙裂冻土、岩层或坚硬的路面。松土器工作条件恶劣,作业过程中其松土齿和齿套承受巨大的拉力。1.存在问题1台某型号推土机在松土作业过程中,其松土器齿套发生开裂故障,开裂部位在齿套底部后侧,如图1所示。齿套开裂后,维修人员采用焊接方法进行加固,仍然未能遏制裂纹的扩展,最
The ripper is hung on the tail of the bulldozer or grader. The bulldozer or grader can press the loose soil of the ripper into the work surface during the marching process according to the construction requirements to perform loose soil work, split the frozen soil, rock formation or hard. The pavement. The ripper working conditions are harsh, and the ripper teeth and the gear sleeves are subjected to a great pulling force during the operation. 1. Problems There is a cracking failure of the ripper gear sleeve of a certain type of bulldozer in the process of soil loosening. The cracking position is at the back of the bottom of the tooth sleeve, as shown in Fig.1. After the gear sleeve cracked, the maintenance personnel used the welding method to reinforce it and still failed to check the expansion of the crack.