The invention provides an inner pipeline chain guide mechanism and an overhead working
truck telescopic arm comprising the guide mechanism, and relates to the technical field of
mechanical engineering, the inner pipeline chain guide mechanism comprises a guide plate, and further comprises a
pipe protection groove, a wire protection groove and a drag chain guide groove which are integrally formed in the guide plate, and the
pipe protection groove and the wire protection groove are symmetrically formed in the areas of the two sides of the guide plate respectively. The
pipe protection groove is used for fixing and protecting a hydraulic or
pneumatic hose, the wire protection groove is used for containing and guiding a cable, the pipe protection groove and the wire protection groove are symmetrically distributed to achieve two-way protection, the middle drag chain guide groove is specially designed for containing an
engineering drag chain, it is ensured that the drag chain stably moves along a preset track in the equipment stretching and retracting process, and
distortion and clamping stagnation are avoided; the whole device is fixed to the inner wall of equipment through the mounting holes, the integral structure of the device guarantees the integral rigidity, the operation space of a pipeline and a drag chain is effectively isolated, mutual interference and abrasion are prevented, and therefore the comprehensive functions of pipeline protection, accurate guiding, service life prolonging and convenient installation and maintenance are achieved.