Safety protection frame for highway engineering construction

A safety protection frame for highway engineering construction relates to the technical field of rain gauge equipment and comprises a protection frame body, a supporting frame is slidably arranged on the outer side face of the protection frame body, an inner cavity is formed in the supporting frame, an inner end groove is formed in the end face, close to the protection frame body, of the supporting frame, and the inner end groove is communicated with the interior of the inner cavity. A sliding groove is formed in the inner end face of the protective frame body, a sliding block is arranged in the sliding groove in a sliding mode, a connecting rod is horizontally arranged on the outer end face of the sliding block, one end of the connecting rod penetrates through the inner end groove and is fixedly arranged on the outer end face of the protective frame body, and rolling wheels are arranged on the lower end face of the protective frame body. The supporting frame structure on the outer side of the protection fram