Obstacle detection device trigger value testing mechanism

CN224341113UActive Publication Date: 2026-06-09SHENGSHI AOTIAN (WUHAN) RAIL TRANSIT EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENGSHI AOTIAN (WUHAN) RAIL TRANSIT EQUIP CO LTD
Filing Date
2025-08-20
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing obstacle detection devices, due to the use of reverse tensile loading during testing, result in the direction of force application not matching the actual scenario, affecting the accuracy and precision of the detection results.

Method used

The device employs a screw drive mechanism to test the trigger value of the obstacle detection device through thrust, realistically simulating the force conditions of the obstacle detection device. The screw and nut threaded engagement drives the output shaft to move linearly along the axial direction. Combined with a mechanical anti-rotation guide mechanism, this ensures that the output shaft moves only linearly along the axial direction.

Benefits of technology

It significantly improves the authenticity and calibration accuracy of trigger value testing, enhances the accuracy, stability and repeatability of pressure sensor force measurement data, and eliminates the deviation of traditional tensile loading methods.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to rail transit technical field especially relates to a trigger value test mechanism for obstacle detection device, including fixed base, output shaft, nut, screw rod and pressure sensor, wherein, output shaft is along the axial penetration fixed base front and is connected in sliding, its rear end is equipped with mounting hole, and the front end fixed pressure sensor setting, nut coaxial fixed in the inboard of mounting hole, screw rod is along the axial penetration fixed base rear end and is connected in rotation, its front end stretches into mounting hole, and is cooperated with nut screw, is used for driving output shaft linear motion before and after. The utility model proposes a trigger value test mechanism for obstacle detection device, its adopt screw rod drive mechanism, carries out obstacle detection device trigger value test through the mode of thrust, can more truly simulate the force condition of obstacle detection device, solves the problem of insufficient test accuracy caused by adopting reverse tensile loading in the prior art device.
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