A Quantitative Ranging Machine with Protective Structure for Rail Transit Fault Diagnosis

The utility model refers to a quantitative distance measuring machine with a protection structure used for railway transit fault diagnosis, comprising a mounting frame, a pushing structure is arranged on the mounting frame, a plate Mounting plate is arranged at the bottom of the mounting frame, and a rotating distance measuring device is installed on the mounting plate. The distance measuring shaft is fixedly lined with a distance measuring wheel, which is placed on the upper surface of the rail head. The distance measuring wheel is equipped with a counting structure. There are protective plates on both sides of the mounting frame, and the bottom of each protective plate is threaded. There are horizontal mounting screws, and the end of each mounting screw near the rail is connected with a mounting bearing seat, and the mounting bearing seat is installed with a clamping wheel axle, and the clamping wheel axle is fixedly lined with a clamping wheel, and the clamping wheel is a cone-shaped wheel, whose side matches the arc shape of the bottom surface of the rail head; A locking wheel is on the protective plate, and the two locking wheels and the distance measuring wheel form a three-point locking position on the upper and lower surfaces of the rail head, so that the wheel walks on the top surface of the rail without any deviation or runout, ensuring accurate measurement.