INTERMEDIATE ROLLER DEVICE AND CRAWLER VEHICLE

To provide an intermediate roller device which can improve running stability even if there is irregularity on a ground surface.SOLUTION: In an intermediate roller device, two intermediate rollers 3, which presses a crawler against a ground surface side, are locates as to sandwich a rotary support body 2 which is rotatably arranged on a vehicle body around an upper end part, a center part of a long connection arm 4 is rotatably connected to a center part of each intermediate roller 3 independently from the intermediate roller 3, one end part 4a of each connection arm 4 is connected to a lower part of the rotary support body 2, and the other end part 4b of each connection arm 4 is connected to an upper part of the rotary support body 2 via a telescopic rod 5. This device includes a spring 6 which elongates the telescopic rod 5 which has contracted.SELECTED DRAWING: Figure 2 【課題】 地面に凹凸などがある場合でも、走行安定性を良好にすることが可能な中間ローラー装置を提供する。【解決手段】 上端部を中心に回転自在に車体に配設される回転支持体２を挟むように、クローラーを地面側に押し付ける２つの中間ローラー３が配設され、長尺状の連結アーム４の中心部が、各中間ローラー３の中心部に中間ローラー３とは独立して回転自在に連結され、各連結アーム４の一端部４ａが回転支持体２の下部に連結され、各連結アーム４の他端部４ｂが伸縮ロッド５を介して回転支持体２の上部に連結され、収縮した伸縮ロッド５を伸長させるスプリング６を備える。【選択図】 図２