To provide a small boom-type high-lift working vehicle that provides not only safety for an operator of a workbench but also sufficient strength of the workbench itself against shocks and vibrations caused by uneven surfaces, uneven ground, or obstacles, and that also provides sufficient detection by safety regulations when the workbench becomes overloaded due to overloading.SOLUTION: A cantilevered support of a workbench is attached to a compression coil spring that is axially supported almost vertically on a boom support bracket for supporting the workbench at an end of a lifting boom. The workbench is suspended in a cantilevered structure that is mounted on the compression coil spring through a support shaft of the spring. Furthermore, a limit switch is attached to the boom support bracket side so that a set workbench load can be detected by the compression displacement of the spring according to the workbench load.SELECTED DRAWING: Figure 2
【課題】不整地面や凹凸地面または障害物などでの衝撃や振動に対して、作業台操縦者の安全性はもとより、作業台そのものの強度を充分なものとし、また作業台が過積載により過荷重になった場合の安全規制での検知を必要充分なものとする小型ブーム式高所作業車を提供する。【解決手段】作業台の片持ち支持を、昇降ブーム先端の作業台支持用ブーム支持ブラケットに、ほぼ鉛直に軸支した圧縮コイルバネを装着し、作業台をバネの支軸を通して片持ちで圧縮コイルバネにマウントする懸架構造にし、更にブーム支持ブラケット側にリミットスイッチを装着し、作業台の荷重に応じたバネの圧縮変位で、設定作業台荷重を検知できるようにした。【選択図】図2
HIGH-LIFT WORKING VEHICLE
高所作業車
2022-01-27
Patent
Electronic Resource
Japanese
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |