Axle temperature detecting snow-proof and safety probe box for railway vehicle

The utility model relates to safety probe box used to detect the journal temperature and guard against snowflakes in railways; wherein, a vertical protective door is arranged on one side wall of the box body, and the out cover of the protective door is sealed; the circumference of a probe hole on a top cover is shaped like a spherical boss; the protective door is arranged in a plumb manner, a sealed outer cover is additionally arranged on the front of protective door and only one probe hole is reserved on the outer cover; a large stretch of space is maintained between the outer cover and the top cover, a rotating main shaft of the protective door is arranged on a bearing seat, and a swing arm is arranged between the door body and the main shaft; a sliding groove is arranged on the swing arm of the protective door, and an axle pin of a rocker arm is arranged in the sliding groove; the protective door is poked into rotation by the axle pin of the rocker arm arranged on a motor shaft, and the axle pin of the rocker arm is connected with a drive unit. By adopting the special structure arranged on the top cover, when wind passes through the boss at the probe hole, the speed will be quickened and a low air pressure is formed, thus preventing dust, rain and snow from entering the probe hole; furthermore, the dust, raindrops, snow can be prevented from approaching the protective door or being stuck on the panel of the protective, thus greatly enhancing the function of against dust, rain and snow. The utility model has the advantages of simple structure, convenient operations and wide popularization prospect.