PROBLEM TO BE SOLVED: To enable a driving force to be gradually increased when an operating amount of an inching pedal is decreased.SOLUTION: A fork lift of this invention comprises a hydraulic control part for controlling a connected state of a clutch on the basis of clutch hydraulic pressure based on an amount of operation of an inching pedal, adjusting a clutch oil pressure at a first characteristic ranging from a non-operated position to the maximum operating position and a second characteristic ranging from the maximum operating position to the non-operated position. The first characteristic is a characteristic in which it has a connected state from the non-operated position to the intermediate operated position, a semi-connected state when it comes to an intermediate operated position and a clutch oil pressure is gradually decreased at a first region where it exceeds the intermediate operated position from the semi-connected state to a cut-off state, and the second characteristic is a characteristic in which a clutch oil pressure is gradually increased at a second rate of change from the cut-off state toward the semi-connected state from the maximum operating position to the intermediate operated position and at the second region where it is below the intermediate operated position, from the semi-connected state toward the connected state.SELECTED DRAWING: Figure 4
【課題】インチングペダルの操作量を減少させた際に駆動力を緩やかに増加させることができる。【解決手段】本発明に係るフォークリフトは、インチングペダルの操作量に基づきクラッチ油圧に基づきクラッチの接続状態を制御し、非操作位置から最大操作位置までは第1特性、最大操作位置から非操作位置までは第2特性でクラッチ油圧を調圧する油圧制御部とを備える。第1特性は、非操作位置から中間操作位置までは接続状態、中間操作位置になると半接続状態、中間操作位置を越える第1領域では半接続状態から切断状態に向けてクラッチ油圧が漸減する特性であり、第2特性は、最大操作位置から中間操作位置までは切断状態から半接続状態に向けてクラッチ油圧を漸増させ、中間操作位置を下回る第2領域では半接続状態から接続状態に向けてクラッチ油圧が第2変化率で漸増する特性である。【選択図】図4
FORK LIFT
フォークリフト
2017-09-21
Patent
Electronic Resource
Japanese
IPC: | F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / 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 |