PROBLEM TO BE SOLVED: To completely pull up a pillar that cannot be easily removed and to carry it out of a field by using a conventional pillar pulling machine. For each pillar of a cultivation ridge, a transfer vehicle is stopped to complete the pulling operation. Since it is a moving work mode, there is a problem that it takes a considerable amount of time for each field. SOLUTION: This is a strut extracting device after finishing a long digging and harvesting, which comprises a traveling means, a pulling-out conveyor section composed of a pair of obliquely arranged conveyor belts for pulling up the strut upward, and a pulled-out strut backward. A long column having a transfer conveyor section for transferring to a column and a mounting table for mounting the column that has been transferred, and a long column having a control means corresponding to the traveling vehicle for the speed of a pair of obliquely installed conveyor belts. It is a strut pulling-out device, and the speed control means for the pair of obliquely arranged conveyor belts is composed of a hydraulic motor unit and is capable of stepless control and is configured to be linked with the speed of the traveling vehicle. [Selection diagram] Fig. 3【課題】従来の支柱引き抜き機は容易に抜けない支柱を確実に抜き上げて圃場の外へ搬出するもので、栽培畦の支柱一本ごとに、移送車を停止して、抜き取り操作を完結して移動する作業形態なので、圃場ごとに相当な時間を要する課題があった。【解決手段】長いもの掘り取り収穫が終わった後の支柱引き抜き装置であって、走行手段と、支柱を上方へ引き抜く斜設した一組の搬送ベルトからなる引き抜きコンベヤ部と、引き抜いた支柱を後方へ移送する移送コンベヤ部と移送した支柱を載置する載置台とを有する長いもの支柱引き抜き装置であり、斜設した一組の搬送ベルトの速度は走行車と対応する制御手段を具備した長いもの支柱引き抜き装置であり、前記斜設した一組の搬送ベルトの速度制御手段は油圧モータユニットで構成されて無段階制御可能であり走行車の速度と連動される構成である。【選択図】図３
