CRANE

• Main Author: MIYAZAKI ITARU
• Format: Patent
• Language: English; Japanese
• Published: 24.12.2020
• Subjects: CRANES; HAULING; HOISTING; LIFTING; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES; PERFORMING OPERATIONS; TRANSPORTING

To provide a crane capable of effectively using pressure oil energy returned from a winch with a simple configuration.SOLUTION: This crane comprises: a winch (105); a first hydraulic actuator (15) that is connected to the input shaft (105a) of the winch (105) for driving the input shaft (105a) to rotate; a first hydraulic pump (12) that supplies pressure oil to the first hydraulic actuator (15); a recovery hydraulic pump (17) that is connected to the input shaft (105a) of the winch (105) and driven along with the rotation of the input shaft (105a); and an oil path (L7) through which the pressure oil from the recovery hydraulic pump (17) is fed to a prescribed supply destination without accumulation.SELECTED DRAWING: Figure 2 【課題】ウインチからの戻り圧油エネルギを、簡易な構成で有効利用できるクレーンを提供する。【解決手段】クレーンは、ウインチ（１０５）と、ウインチ（１０５）の入力軸（１０５ａ）に連結され、当該入力軸（１０５ａ）を回転駆動するための第１油圧アクチュエータ（１５）と、第１油圧アクチュエータ（１５）に圧油を供給する第１油圧ポンプ（１２）と、ウインチ（１０５）の入力軸（１０５ａ）に連結され、当該入力軸（１０５ａ）の回転により駆動される回生用油圧ポンプ（１７）と、回生用油圧ポンプ（１７）からの圧油を蓄圧することなく所定の供給先に送る油路（Ｌ７）とを備える。【選択図】図２