Vehicle body fixing mechanism and highway-railway dual-purpose rail transit detection vehicle

The utility model discloses a vehicle body fixing mechanism and aims to solve the problem that a vehicle body cannot be quickly locked and unlocked in the prior art. The device comprises a hydraulic cylinder with a telescopic bolt rod, a rotating pin and a control electromagnetic valve. The rotating pin is connected with the first vehicle body and the second vehicle body, and the first vehicle body and the second vehicle body can be twisted relatively through the rotating pin. The hydraulic cylinder is connected to the first vehicle body, and a bolt hole matched with the telescopic bolt rod is formed in the second vehicle body. The two vehicle bodies can be quickly locked and unlocked, the manual labor is remarkably reduced, the operation time is saved, and the working efficiency is improved. The utility model further discloses a highway-railway dual-purpose rail transit detection vehicle adopting the vehicle body fixing structure. 本实用新型公开了一种车体固定机构，旨在解决现有技术中车体无法快速锁定和解锁的问题。其包括带伸缩插销杆的液压缸、转动销和控制电磁阀。所述转动销连接第一车体和第