Bridge crack detection system

The invention discloses a bridge crack detection system, which comprises a telescopic arm. A supporting plate is mounted at the tail end of the telescopic arm in a sliding manner. A crack observationmechanism and a crack measurement mechanism are fixedly installed on the supporting plate. An observation camera table capable of moving up and down is mounted in the crack observation mechanism in amatched manner. A measurement camera table capable of moving up and down is mounted in the crack measurement mechanism in a matched manner. The crack measurement mechanism is internally provided witha marking mechanism. The bridge crack detection system facilitates detection of the bridge bottom crack, a person does not need to enter the bottom of the bridge, the operation safety of the detectionpersonnel is effectively ensured, and the detection precision of the crack is ensured. 本发明公开了一种桥梁裂缝检测系统，包括伸缩臂，所述伸缩臂的末端滑动安装托板，所述托板上固定安装裂缝观察机构和裂缝测量机构，所述裂缝观察机构内部配合安装能够上下运动的观察摄像台，所述裂缝测量机构内部配合安装能够上下运动的测量摄像台，所述裂缝测量机构内部设置标记机构，本桥梁裂缝检测系