The invention provides a front supporting leg telescopic assembly and engineering machinery, and relates to the technical field of engineering machinery. The front supporting leg telescopic assembly comprises a supporting leg seat, a first-stage front supporting leg, a second-stage front supporting leg, a third-stage front supporting leg, a first-stage oil cylinder and a binding oil cylinder. According to the front supporting leg telescopic assembly, the first-stage oil cylinder and the binding oil cylinder are adopted, the first-stage oil cylinder and the binding oil cylinder independently supply oil to act, all levels of supporting legs stretch out and draw back at the same time, the telescopic action of the supporting legs is accelerated, and the action efficiency is remarkably improved; the first-stage oil cylinder and the binding oil cylinder are both located in the cavity of the supporting leg, so that the supporting leg is prevented from stretching out and drawing back; when the second-stage front supporting leg stretches out and draws back relative to the first-stage front supporting leg, the guide wheel rolls along the cylinder body of the outer oil cylinder, so that the binding oil cylinder moves in the direction limited by the guide wheel, and deflection of the binding oil cylinder in the moving process is avoided; a pin shaft longitudinally moves in the long-strip-shaped hole, so that the first-stage oil cylinder and the binding oil cylinder can swing in a small range, and the inner oil cylinder and the binding oil cylinder are prevented from being bent and damaged due to resistance.
本发明提供了一种前支腿伸缩组件及工程机械,涉及工程机械技术领域。该前支腿伸缩组件包括支腿座、一级前支腿、二级前支腿、三级前支腿、一级油缸和捆绑油缸。本发明的前支腿伸缩组件,采用一根一级油缸和一根捆绑油缸,一级油缸和捆绑油缸单独供油动作,实现各级支腿同时伸缩,使支腿的伸缩动作加快、动作效率显著提高;一级油缸和捆绑油缸均位于支腿腔体的内部,以避免支腿伸缩受阻;二级前支腿相对于一级前支腿伸缩时,导向轮沿外油缸的缸体滚动,使捆绑油缸沿着导向轮限定的方向移动,避免捆绑油缸在移动过程中发生偏斜;销轴在长条孔内沿纵向移动,使一级油缸、捆绑油缸可以小幅度摆动,避免内油缸、捆绑油缸受到阻力导致弯曲损坏。
Front supporting leg telescopic assembly and engineering machinery
一种前支腿伸缩组件及工程机械
2022-02-18
Patent
Electronic Resource
Chinese
IPC: | B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen |
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