HYDRAULIC SHOVEL

To provide a hydraulic shovel which can prevent a hook from coming off a second link in replacing a work tool (a bucket and the like) and which can suppress abrasion of a hook.SOLUTION: A hook holder 30 provided in a hook housing space S1 in a second link 15 comprises: a support protrusion 38 holdin...

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Bibliographic Details
Main Authors SEKI SEIJI, TAKANO KENICHI
Format Patent
LanguageEnglish
Japanese
Published 07.03.2019
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Summary:To provide a hydraulic shovel which can prevent a hook from coming off a second link in replacing a work tool (a bucket and the like) and which can suppress abrasion of a hook.SOLUTION: A hook holder 30 provided in a hook housing space S1 in a second link 15 comprises: a support protrusion 38 holding a hook 23 at a housing position with an outside surface 28B1 of a tip side 28B of a hook portion 28 of the hook 23 made to be contact therewith when the hook 23 is inserted into the hook housing space S1 from the tip side 28B of the hook portion 28; and a hook latching protrusion 39 which is positioned closer to left and right bucket side bosses 21,22 than the support protrusion 38 and which latches the hook 23 with an inside surface 28B2 of the tip side 28B of the hook 23 made to be contact therewith when a connecting-pin 11B is removed to let the hook 23 move closer to the left and right bucket side bosses 21,22 under its own weight.SELECTED DRAWING: Figure 3 【課題】作業具(バケット等)を交換するときにフックが第2のリンクから外れないようにでき、かつフックが摩耗することを抑制できる油圧ショベルを提供する。【解決手段】第2のリンク15内のフック格納空間S1に設けられたフック保持具30には、フック23を鉤部28の先端側28Bからフック格納空間S1に挿入したときにフック23の鉤部28の先端側28Bの外側面28B1が当接することによりフック23を格納位置に支持する支持突起38と、支持突起38よりも左,右のバケット側ボス21、22側に位置し、連結ピン11Bを取外してフック23が自重により左,右のバケット側ボス21、22側に移動したときにフック23の先端側28Bの内側面28B2が当接することによりフック23を掛止めするフック掛止め突起39とが備えられている。【選択図】図3
Bibliography:Application Number: JP20170158029