本发明涉及桥梁下设设备技术领域，且公开了一种拆装方便的钢桁架下设载人施工平台，包括桥梁桁架和支撑平台，所述桥梁桁架的底部设置有支撑轨，所述支撑轨的内部开设有安装槽，所述支撑轨至少一端开设有装配槽口，装配槽口与安装槽连通；该拆装方便的钢桁架下设载人施工平台，通过支撑座与连接转座的设计以及支撑杆上端杆体通过连接板和挂板与支撑轨中装配槽口和安装槽的组合设计，便于将支撑平台架设安装和拆卸，同时在支撑杆内部设置内套管，并利用内套管的轴向移动限制连接转座相对支撑座转动，随后利用内套管的轴向移动控制驱动机构驱动支撑平台移动，即可避免支撑平台在施工人员作业施工时或支撑平台移动时出现晃动。

The invention relates to the technical field of bridge underneath equipment, and discloses a convenient-to-disassemble and assemble manned construction platform under a steel truss, the convenient-to-disassemble and assemble manned construction platform comprises a bridge truss and a supporting platform, a supporting rail is arranged at the bottom of the bridge truss, a mounting groove is formed in the supporting rail, an assembling notch is formed in at least one end of the supporting rail, and the supporting platform is arranged in the mounting groove. The assembling notch is communicated with the mounting groove; according to the convenient-to-disassemble and assemble manned construction platform arranged below the steel truss, through the design of the supporting seats and the connecting rotating seats and the combined design of the upper end rod bodies of the supporting rods and the assembling notches and the mounting grooves in the supporting rails through the connecting plates and the hanging plates, the supporting platform can be conveniently erected, assembled and disassembled, and meanwhile inner sleeves are arranged in the supporting rods; the axial movement of the inner sleeve is utilized to limit the rotation of the connecting rotary seat relative to the supporting seat, and then the axial movement of the inner sleeve is utilized to control the driving mechanism to drive the supporting platform to move, so that the supporting platform can be prevented from shaking when a constructor works or moves.