PROBLEM TO BE SOLVED: To provide a hydraulic cylinder for a loading space lifting device, capable of improving maintainability and performing stable operation with high accuracy.SOLUTION: Two hydraulic cylinders 30, 40 includes selector valve chambers 38, 48 attached to bottom side end surfaces of tubes 34, 44, respectively. The selector valve chambers 38, 48 each have a valve body driven with pressing force or attracting force due to rods 32, 42 of the attached hydraulic cylinders 30, 40. With movement of each valve, a supply and exhaust state of driving pressure oil supplied to itself or the other hydraulic cylinder 40, 30 is switched.SELECTED DRAWING: Figure 3
【課題】メンテナンス性を向上させるとともに、高精度で安定した動作を行わせることができる荷台昇降装置用油圧シリンダを提供する。【解決手段】二つの油圧シリンダ30、40は、チューブ34、44のボトム側端面に付設された切換弁室38、48を備え、これら切換弁室38、48は、付設された油圧シリンダ30、40のロッド32、42の移動による押し力または引き力で駆動する弁体をそれぞれ有し、それぞれの弁体の移動により自身または他の油圧シリンダ40、30へ供給される駆動圧油の給排状態を切換える。【選択図】図3
HYDRAULIC CYLINDER FOR LOADING SPACE LIFTING DEVICE, LOADING SPACE LIFTING DEVICE INCLUDING THE SAME, AND TRUCK
荷台昇降装置用油圧シリンダおよびこれを備える荷台昇降装置ならびに貨物自動車
2016-05-19
Patent
Electronic Resource
Japanese
IPC: | F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B60P Fahrzeuge zum Transport von Lasten oder zum Befördern, Tragen oder Aufnehmen besonderer Lasten oder Gegenstände , VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS |
Hydraulic system of large loading arm lifting oil cylinder
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