The invention discloses a variable-amplitude connecting rod and cantilever crane connecting device of an overhead working truck. The variable-amplitude connecting rod and cantilever crane connecting device comprises a lower arm, an upper arm, a connecting device, a variable-amplitude long connecting rod, a variable-amplitude short connecting rod and an oil cylinder. The variable-amplitude short connecting rod is sequentially hinged to the connecting device, the variable-amplitude long connecting rod and the oil cylinder from top to bottom, through non-concentric arrangement of hinge points of the variable-amplitude long connecting rod, the variable-amplitude short connecting rod and the oil cylinder, unfolding and folding of the upper arm within the range of 180 degrees are achieved, and meanwhile bearing of the oil cylinder is reduced. The connecting device adopts an up-and-down butt-joint cylindrical structure, so that the shear and tension of a welding seam are greatly reduced, and the reliability is remarkably improved; meanwhile, the whole connecting pipeline is bent into a C shape, the C-shaped bending direction of the pipeline can be kept unchanged when the upper arm is unfolded and folded, back-and-forth bending caused by other pipeline arrangement modes is avoided, and the fatigue life of the connecting pipeline is effectively prolonged.
本发明公开了一种高空作业车变幅连杆及臂架连接装置,包括:下臂、上臂、连接装置、变幅长连杆、变幅短连杆及油缸。变幅短连杆由上至下依次与连接装置、变幅长连杆、油缸铰接,通过变幅长连杆、变幅短连杆与油缸铰点的不同心布置,实现了上臂180°范围内的展开与回收,同时减小了油缸承载;连接装置采用上、下对接的筒状结构,大幅减小焊缝的受剪及受拉,显著提高可靠性;同时连接管路整体弯成C型,在上臂展开及收回的状态下,管路可保持C型弯曲方向不变,避免了其他布置管路方式引起的来回弯折,有效提高了连接管路的疲劳寿命。
Amplitude-variable connecting rod and cantilever crane connecting device of overhead working truck
一种高空作业车变幅连杆及臂架连接装置
03.01.2025
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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