Telescopic conveying line device capable of making turn

The invention discloses a telescopic conveying line device capable of making a turn. The telescopic conveying line device is composed of a plurality of conveying sections. The conveying sections include guide wheels, conveying rollers, motors, chain plates and knuckle bearings. The two ends of each two of the conveying rollers are connected through chains, and the chains are composed through hingejoint of the middle parts of the two chain plates through the knuckle bearings. A telescopic conveyor line is driven by a synchronous belt, the technology is mature and reliable, requirements can bemet, switching of the direction can be carried out according to the requirements, the functions of turn making, height adjusting and container falling prevention can be realized, placing cargo box drop function, when a railway boxcar is entered, the corresponding guide wheels are installed on the two sides of a side opening door, and the conveyor line is prevented from being collided with the edgeof a boxcar door. The enti