A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To stabilize a vehicle body by ensuring a wide contact patch even in narrow areas where the angles of the contact patches of the left and right traveling devices are different.SOLUTION: An open leg type hydraulic excavator comprises a round body that extends upward from a center frame to support a revolving body, left and right traveling devices that are connected to the center frame via a connecting shaft that extends in the traveling direction, rotate around the connecting shaft as a fulcrum, and can be opened in an inverted V shape when viewed from the traveling direction, and a tilt cylinder in which both ends are connected to the left and right traveling devices and the center frame and driven by the pressure oil discharged from a hydraulic pump to rotate the left and right traveling devices to open and close the legs. The connecting shaft is located higher than the center of gravity of the traveling device when the ground plane is horizontal. The vertical length of the round body of the center frame is secured so that the left and right traveling devices do not come into contact with the lower surface of the revolving body even when the tilt cylinder is fully extended and the left and right traveling devices are opened to the maximum.SELECTED DRAWING: Figure 2
【課題】左右の走行装置の接地面の角度が異なる狭隘地においても広い接地面を確保して機体を安定させる。【解決手段】センタフレームから上方に延びて旋回体を支持する丸胴部と、前記センタフレームに対して走行方向に延びる連結軸を介して連結され、前記連結軸を支点に回動し走行方向から見て逆Ｖ字型に開脚可能な左右の走行装置と、前記左右の走行装置と前記センタフレームとに両端が連結され、前記油圧ポンプから吐出される圧油で駆動されて前記左右の走行装置を回動させ開脚及び閉脚させるチルトシリンダとを備え、前記連結軸が、接地面を水平にした状態における前記走行装置の重心位置よりも高位置に配置されており、前記チルトシリンダを最伸長させて前記左右の走行装置を最大限開脚させた状態でも前記左右の走行装置が前記旋回体の下面に接触しないように、前記センタフレームの丸胴部の上下の長さが確保されている開脚型油圧ショベルを提供する。【選択図】図２
To stabilize a vehicle body by ensuring a wide contact patch even in narrow areas where the angles of the contact patches of the left and right traveling devices are different.SOLUTION: An open leg type hydraulic excavator comprises a round body that extends upward from a center frame to support a revolving body, left and right traveling devices that are connected to the center frame via a connecting shaft that extends in the traveling direction, rotate around the connecting shaft as a fulcrum, and can be opened in an inverted V shape when viewed from the traveling direction, and a tilt cylinder in which both ends are connected to the left and right traveling devices and the center frame and driven by the pressure oil discharged from a hydraulic pump to rotate the left and right traveling devices to open and close the legs. The connecting shaft is located higher than the center of gravity of the traveling device when the ground plane is horizontal. The vertical length of the round body of the center frame is secured so that the left and right traveling devices do not come into contact with the lower surface of the revolving body even when the tilt cylinder is fully extended and the left and right traveling devices are opened to the maximum.SELECTED DRAWING: Figure 2
【課題】左右の走行装置の接地面の角度が異なる狭隘地においても広い接地面を確保して機体を安定させる。【解決手段】センタフレームから上方に延びて旋回体を支持する丸胴部と、前記センタフレームに対して走行方向に延びる連結軸を介して連結され、前記連結軸を支点に回動し走行方向から見て逆Ｖ字型に開脚可能な左右の走行装置と、前記左右の走行装置と前記センタフレームとに両端が連結され、前記油圧ポンプから吐出される圧油で駆動されて前記左右の走行装置を回動させ開脚及び閉脚させるチルトシリンダとを備え、前記連結軸が、接地面を水平にした状態における前記走行装置の重心位置よりも高位置に配置されており、前記チルトシリンダを最伸長させて前記左右の走行装置を最大限開脚させた状態でも前記左右の走行装置が前記旋回体の下面に接触しないように、前記センタフレームの丸胴部の上下の長さが確保されている開脚型油圧ショベルを提供する。【選択図】図２
OPEN LEG TYPE HYDRAULIC EXCAVATOR
開脚型油圧ショベル
KURODA HIDEO (author)
2020-10-01
Patent
Electronic Resource
Japanese
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