SAFETY DEVICE FOR SERVICE VEHICLE

• Main Authors: MATSUOKA RYOMA, KAYAHARA TOSHIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 22.02.2021
• Subjects: HAULING; HOISTING; HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDEDFOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCEDIRECTLY TO THE SURFACE OF A LOAD; LIFTING; PERFORMING OPERATIONS; TRANSPORTING

To provide a safety device for a service vehicle that detects both concave and convex portions on a traveling surface G as a step and performs an emergency stop, despite its simple configuration.SOLUTION: As means for detecting a step on a traveling surface G, contact-type step detection means 60 of a limit switch type having a switch body 63 that is turned ON or OFF by an operating body 62 to output a step detection signal when a contactor 61 in contact with the traveling surface G, the operating body 62 to which the contactor 61 is connected, and the contactor 61 descend by a predetermined descending height Δ or more, is attached to a chassis 10 adjacent to a traveling device 40 on the rear side of an end 40a on the front side in the traveling direction of the traveling device 40 provided on the left and right sides of the chassis 10. Then, the contactor 61 is brought into contact with the traveling surface G at a front end CA1 of a ground contact region CA of the traveling device 40 with respect to the traveling surface G or a position in the vicinity thereof.SELECTED DRAWING: Figure 4 【課題】簡単な構成でありながら走行面Ｇ上の凹部と凸部のいずれも段差として検出して非常停止を行う作業車の安全装置を提供する。【解決手段】走行面Ｇの段差を検出するための手段として，走行面Ｇと接触する接触子６１，該接触子６１が連結された操作体６２，及び，前記接触子６１が所定下降高さΔ以上下降したときに前記操作体６２によってＯＮ又はＯＦＦ操作されて段差検出信号を出力するスイッチ本体６３を有する，リミットスイッチ型の接触式段差検出手段６０を，車台１０の左右に設けた走行装置４０の進行方向前方側の端部４０ａよりも後方側で前記走行装置４０に隣接して車台１０に取り付ける。そして，前記接触子６１を，走行面Ｇに対する走行装置４０の接地領域ＣＡの前方側端部ＣＡ１又はその近傍位置において前記走行面Ｇと接触させる。【選択図】図４