To provide a pantograph jack that is excellent in productivity, smoothness of a lifting function, and storage property.SOLUTION: A pantograph jack includes a base frame for fixedly positioning a load receiving frame, which engages and supports a vehicle on an upper side, on a road and the like on a lower side. The pantograph jack is configured to stretch a screw rod across a left upper arm, a right upper arm, a left lower arm and a right lower arm for connecting the load receiving frame and the base frame to each of inner end parts, a female screw shaft 11 for pivotally supporting the left upper arm and the left lower arm, and a support shaft for pivotally supporting the right upper arm and the right lower arm so as to move up/down the load receiving frame in a rotation direction of the screw rod. An extension arm 16 extended toward the support shaft and including a nut trunnion 20 on an inner surface of an end surface 16b1 of a tip part is provided on the female screw shaft 11. A through hole 14 is opened in the female screw shaft 11 such that a tip side of the screw rod passes therethrough. A screw part screwed into a screw hole 19 of the nut trunnion 20 is provided on the tip side, and the screw rod is inserted through and stretched across the screw hole 19 of the nut trunnion 20 and a bearing hole of the support shaft.SELECTED DRAWING: Figure 9
【課題】生産性及び昇降機能の円滑性と格納性に優れるパンタグラフ式ジャッキを提供する。【解決手段】上方側に車両と係合支承する荷受枠を、下方側に道路等に定置する基台枠を備え、前記荷受枠と前記基台枠を夫々の内端部に接続する左上アームと右上アームと左下アームと右下アームと、前記左上アームのと左下アームを軸支するメネジ軸11と、前記右上アームと右下アームを軸支する支軸とにネジ棒を差し渡し、ネジ棒の回転方向により荷受枠を昇降するパンタ式ジャッキにおいて、前記メネジ軸11には、支軸側に延びて先端部の端面16b1の内面にナットトラニオン20を具えたエクステンションアーム16が配備され、前記メネジ軸11には、ネジ棒の先端側が挿通する通孔14が開口され、前記ナットトラニオン20のネジ孔19に螺合するネジ部を先端側に具え、ネジ棒がナットトラニオン20のネジ孔19と支軸の軸受孔に挿通して差渡される。【選択図】図9
PANTOGRAPH JACK
パンタグラフ式ジャッキ
30.04.2021
Patent
Elektronische Ressource
Japanisch
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 |
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