PROBLEM TO BE SOLVED: To fold a roller apparatus into a stable position with a comparatively small driving force and to automatically control the swinging/fixing operation of a compacting roller apparatus, interlocked with the folding operation.SOLUTION: A fixed compacting roller apparatus and a movable compacting roller apparatus are connected to each other by a parallel link turned by an extensible driving apparatus, and the movable compacting roller apparatus supported to an upward circular arc shaped guide stand is folded backward in a parallel state by a main arm of the parallel link. An engaging member of the movable compacting roller apparatus is provided with an engaging hole bored to serve for communication between a front longitudinally-long hole and a rear laterally-long hole, and the right and left side plates of a U-shaped frame body fixed to the main arm are formed with laterally-long holes. The laterally-long holes and the engaging hole are connected by a common pin. A control member is provided for reciprocating the common pin from the longitudinally-long hole position of the engaging member that permits swinging of the roller apparatus, into a laterally-long hole position that inhibits swinging, interlocked with the holding operation.COPYRIGHT: (C)2013,JPO&INPIT【課題】比較的小さい駆動力でローラ装置を安定位置に折り畳み、折り畳み動作に連動して鎮圧ローラ装置の揺動・固定操作が自動制御されるようにする。【解決手段】固定鎮圧ローラ装置と可動鎮圧ローラ装置を、伸縮駆動装置で回動する平行リンクで連結し、上向きの円弧状ガイド台に坦持させた可動鎮圧ローラ装置を平行リンクのメインアームで後方へ平行状態で折り畳む。可動鎮圧ローラ装置の係合部材に、前部縦長孔と後部横長孔を連通させた係合孔を穿設するとともに、メインアームに固定したコの字状枠体の左右側板に横長孔を形成し、この横長孔と前記係合孔を共用ピンで連結する。折り畳み動作に連動して前記共用ピンをローラ装置の揺動を可能にする係合部材の縦長孔位置から揺動を不能にする横長孔位置に往復移動させる制御部材を設ける。【選択図】図5
