The invention discloses an arm support device and engineering machinery, and the arm support device comprises a knuckle arm assembly which comprises a first knuckle arm and a second knuckle arm; the telescopic oil cylinder is obliquely arranged in the first section arm and the second section arm and comprises a telescopic rod and a cylinder barrel, the telescopic rod is rotationally connected with the inner side wall of the first section arm, and the cylinder barrel is arranged on the telescopic rod in a sleeving mode and can move in the axial direction of the telescopic rod; an arc-shaped hole is formed in the vertical side plate of the second section arm, the connecting pin shaft penetrates through the arc-shaped hole and can move in the bending direction of the arc-shaped hole, one end of the connecting pin shaft is clamped on the outer side wall of the vertical side plate, and the other end of the connecting pin shaft is connected with the cylinder barrel; or an arc-shaped groove is formed in the vertical side wall of the cylinder barrel, one end of the connecting pin shaft is connected with the inner side wall of the second section arm, and the other end of the connecting pin shaft extends into the arc-shaped groove and can move in the bending direction of the arc-shaped groove. The arm support device and the engineering machinery have the advantages of being simple in structure and capable of conducting bending deflection compensation on the telescopic oil cylinder in the arm support device.
本发明公开了一种臂架装置和工程机械,臂架装置包括:节臂组件,包括第一节臂和第二节臂;伸缩油缸,倾斜地设置在第一节臂、第二节臂的内部并包括伸缩杆和缸筒,伸缩杆和第一节臂的内侧壁转动连接,缸筒套设在伸缩杆上并可沿伸缩杆的轴向移动;连接销轴,第二节臂的竖侧板上设有弧形孔,连接销轴穿设弧形孔中并可沿着弧形孔的弯曲方向移动,连接销轴的一端卡设在竖侧板的外侧壁上,连接销轴的另一端与缸筒连接;或者,缸筒的竖侧壁上设有弧形凹槽,连接销轴的一端和第二节臂的内侧壁连接,连接销轴的另一端伸入弧形凹槽中并可沿着弧形凹槽的弯曲方向移动。该臂架装置和工程机械具有结构简单,能对臂架装置内部的伸缩油缸进行弯曲挠度补偿的优点。
Cantilever crane device and engineering machinery
臂架装置和工程机械
2023-11-17
Patent
Elektronische Ressource
Chinesisch
IPC: | B66C Krane , CRANES / 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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