The invention provides a lightweight inverted front jacking hydraulic cylinder of a dump truck, and belongs to the field of hydraulic cylinders. The lightweight inverted front jacking hydraulic cylinder of the dump truck comprises an outer cylinder barrel, inner cylinder barrels, a hinge shaft, a knuckle bearing and a last stage buffer unit; the multiple stages of the inner cylinder barrels with decreasing inner diameters are arranged in the outer cylinder barrel; the multiple stages of the inner cylinder barrels can extend out relative to the outer cylinder barrel in an end-to-end connectionmode, or the multiple stages of the inner cylinder barrels are sequentially nested in the outer cylinder barrel in a contraction mode; the hinge shaft is arranged on the outer wall of an outer sleeve;the knuckle bearing is arranged at the lower end of the last stage inner cylinder barrel; and the last stage buffer unit is arranged between the upper end of the last stage inner cylinder barrel andthe outer cylinder barrel. According to the lightweight inverted front jacking hydraulic cylinder of the dump truck, the weight reduction design is adopted to remove a protective sleeve, so that the weight of the hydraulic cylinder is reduced, and the light weight of the dump truck is facilitated; the hinge shaft and the knuckle bearing are arranged on the hydraulic cylinder to form a three-pointassembly structure, and precision requirements on the assembly process are lower; and the last stage buffer unit is arranged, so that impact on a chassis caused by falling of a container of the dump truck is effectively prevented.
本发明提供了一种自卸车轻量化倒置前顶液压缸,属于液压缸领域。该自卸车轻量化倒置前顶液压缸,包括外缸筒、内缸筒、铰轴、关节轴承和末级缓冲单元;外缸筒内设置内径递减的多级内缸筒,多级内缸筒可首尾相接相对于外缸筒伸出,或者,多级内缸筒收缩依次嵌套于外缸筒内;外套筒的外壁设置一根铰轴;末级内缸筒的下端设置一个关节轴承;末级内缸筒的上端与外缸筒之间设置末级缓冲单元。本发明采用减重设计去掉护套筒,使液压缸的重量减轻,有利于自卸车的轻量化;其上设置一根铰轴和一个关节轴承,为三点式装配结构,装配工艺精度要求较低;设置末级缓冲单元,可以有效防止自卸车货箱下落对车底盘的冲击。
Lightweight inverted front jacking hydraulic cylinder of dump truck
一种自卸车轻量化倒置前顶液压缸
2020-08-07
Patent
Electronic Resource
Chinese
IPC: | F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B60P Fahrzeuge zum Transport von Lasten oder zum Befördern, Tragen oder Aufnehmen besonderer Lasten oder Gegenstände , VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS |
Front jacking oil cylinder lower mounting seat of modular dump truck
European Patent Office | 2020
|Auxiliary-beam-free engineering jacking device for engineering dump truck
European Patent Office | 2022
|Lifting hydraulic system suitable for mining dump truck and mining dump truck
European Patent Office | 2025
|