Hall sensing disengagement mechanism for universal wheel

The utility model relates to a universal wheel Hall induction disengagement mechanism which comprises a wheel shaft, a base installed on the outer side of the wheel shaft, a bearing and a shaft sleeve, the bearing and the shaft sleeve are installed in the base, the end portion of the wheel shaft penetrates through the bearing and the shaft sleeve, a magnetic column is installed at the end portion of the wheel shaft, and a Hall fixing base is arranged on a machine body. A Hall switch is installed on the Hall fixing base and corresponds to the magnetic column. When the machine cannot walk normally in time due to the fact that the machine touches a pit on the grassland or is lifted abnormally, the mechanism achieves automatic closing of the cutter head of the machine through the magnetic column and the Hall switch which are matched with each other, and operation is convenient and safe. 本实用新型涉及一种万向轮霍尔感应脱离机构，包括轮轴，安装在所述轮轴外侧的底座，安装在所述底座内的轴承和轴套，所述轮轴的端部贯穿所述轴承和轴套，所述轮轴的端部安装磁柱，机器主体上设有霍尔固定座，所述霍尔固定座上安装有霍尔开关，所述霍尔开关与所述磁柱相互对应。