Positioning sliding trolley capable of automatically tracking central line of rail in real time

Abstract

The invention relates to the technical field of rail area equipment limit detection of rail traffic, and provides a positioning sliding trolley capable of automatically tracking the central line of a rail in real time. The positioning sliding trolley capable of automatically tracking the central line of the rail in real time comprises a trapezoid vehicle frame, wherein a first walking wheel is arranged at a left end beam of the vehicle frame, a second walking wheel and a third walking wheel are arranged at a right end beam of the vehicle frame, a middle longitudinal beam is arranged in the middle of the vehicle frame, two linear guide rails are arranged on the vehicle frame, a primary micro moving sliding block and a secondary micro moving sliding block are arranged on the two linear guide rails, a main shaft end portion of the first walking wheel penetrates out of a linear bearing hole embedded in the left end beam, a limiting retaining shoulder is arranged at the end portion of the main shaft end portion, a pre-tightening adjusting rod is arranged on the middle longitudinal beam, two pressure springs of the same rigidity are arranged between the limiting retaining shoulder and the primary micro moving sliding block and between the primary micro moving sliding block and the pre-tightening adjusting rod respectively, and the primary micro moving sliding block and the secondary micro moving sliding block are respectively provided with a detection device. By means of the positioning sliding trolley capable of automatically tracking the central line of the rail in real time, the walking wheels are attached to the steel rail, and efficient, continuous and accurate detection positioning of two different kinds of measuring bases is achieved.

Description

technical field [0001] The invention relates to the technical field of equipment limit detection in a rail transit track area, in particular to a positioning trolley that automatically tracks the center line of a track in real time. Background technique [0002] A lot of equipment needs to be arranged in the track area along the subway project. The limit positions of these devices to the inside are defined based on the centerline of the track, that is, the device limit. In order to ensure the safe operation of subway vehicles, the installation of these devices must not intrude into the limited area of ​​the equipment, otherwise the moving vehicle will easily collide with the equipment. Therefore, it is necessary to check whether the actual construction and installation equipment has invaded the limited area before the new line is opened for operation. In order to realize full-section and continuous high-efficiency inspection, it is usually carried out by pushing and install...

AI Technical Summary

Problems solved by technology

Due to the comprehensive influence of the wheel-rail gap and lateral dynamic displacement on the moving flatbed, the inspection template shakes obviously from side to side (about 10-20mm), which is likely to cause missed inspections or misjudgments, so the inspection effect is not good

The defects of this method are mainly manifested in the fact that the flatbed car cannot realize the real-time coincidence of the centerline of the inspection template and the centerline of the track

The inspection and measurement accuracy of special equipment (such as platforms, screen doors or safety doors, and evacuation platforms) required by the revision of the current technical standards is 2mm, which is difficult to meet with the current inspection methods

Of course, the use of modern laser measurement technology can achieve high precision, but it can only achieve static scanning measurement in a limited area, and continuous inspection cannot be realized. The work efficiency is low and the hardware cost is high.

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