PROBLEM TO BE SOLVED: To solve the problem of causing a standstill case since direction-changing motion of a tractor head cannot be taken, when a semi-trailer enters a narrow road and a narrow space in a connected state.SOLUTION: When desiring to largely change the direction of a tractor on the spot: a slider to which a coupler is fixed in a guide frame for the slider is moved backward more than a home position by a hydraulic cylinder; a front wheel of the tractor is floated by weight of a fifth wheel load applied to a king pin of a trailer in a position of exceeding the center of a rear wheel axle; one side of left-right wheels of the rear wheel axle is locked by a brake in its state; when advancing-retreating the tractor at a slow speed, the direction can be changed since the tractor executes turning travel with a brake-locked rear tire as the center; a brake lock is released in a predetermined position; and afterwards, the slider is moved forward and the tire is put in a travel state after grounding, so that the direction can be quickly changed.SELECTED DRAWING: Figure 2

    【課題】 セミトレーラが連結状態で狭隘な道路や狭いスペースに入り込んだ場合、トラクターヘッドの方向変換の動きが取れず立ち往生する場合が発生する。【解決手段】 トラクターをその場で大きく方向変換をさせたい場合、スライダー用ガイド枠の中の、カプラーを固定したスライダーを油圧シリンダで定位置より後方へ移動させ、後輪車軸の中心を越えた位置でトレーラのキングピンに架かる第五輪荷重の重さでトラクターの前輪を浮上させる、その状態で後輪車軸の左右の車輪の片方をブレーキロックし、トラクターを微速で前後進させるとブレーキロックされた後輪タイヤを中心にトラクターが旋回走行を行うため方向変換が出来る、所定の位置でブレーキロックを解除して、その後スライダーを前方に移動させてタイヤを接地させてから走行状態にすることで素早く方向転換が出来る。【選択図】図2


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    Title :

    STEERING MECHANISM OF TRACTOR


    Additional title:

    トラクターの操舵機構


    Contributors:

    Publication date :

    2017-10-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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