DRIVING DEVICE FOR A PORTABLE CHECKING SYSTEM OF A BRIDGE FOR MOVING SMOOTHLY A WORKING BASE ON A GUIDE RAIL WITHOUT A SLIP IN A SIMPLIFIED STRUCTURE BY ENGAGING A DRIVING GEAR WITH A RACK GEAR

摘要

PURPOSE: A driving device for a portable checking system of a bridge is provided to smoothly move a working base without a slip by a simple structure, to minimize failure caused by the simple structure, and to check and repair the bridge in a stable state by stopping the working base in an exact position. CONSTITUTION: In a working base reciprocatingly moved on guide rails(110) mounted at both sides of the underside of a bridge by a driving device(1), the driving device for a portable checking system of the bridge is composed of a rolling unit(10) rolling along the guide rails at the upper part of the inside of frames(12) installed at both sides to and a movable unit(20) formed at the guide rail and one frame to move the rolling unit on the guide rail. The driving device is combined to a mounting flange(122) of the working base at the lower side of the frame by a shaft(S).