Transportation equipment and hydraulic system thereof

Abstract

The invention provides transportation equipment and a hydraulic system thereof. The hydraulic system comprises M*N motion executing mechanisms, M*N switching valve modules, M proportional valve modules and a controller, wherein the M*N motion executing mechanisms drive each of M supporting legs of the transportation equipment to perform N motions; the M*N switching valve modules communicate with the M*N motion executing mechanisms correspondingly; the M proportional valve modules correspond to the M supporting legs correspondingly; and the controller controls all the proportional valve modulesand all the switching valve modules. As for each of the M supporting legs, outlets of the N switching valve modules in the M*N switching valve modules communicate with the N motion executing mechanisms of the supporting leg correspondingly, and inlets of the N switching valve modules in the M*N switching valve modules communicate with outlets of the proportional valve modules corresponding to thesupporting leg. The M proportional valve modules are connected in parallel between the medium driving end and the medium return end. The transportation equipment comprises the hydraulic system. The hydraulic system of the transportation equipment comprising the M supporting legs each of which can perform N motions comprises M proportional valves and M*N switching valves, and the cost of the hydraulic system is much lower than that of an existing hydraulic system comprising M*N proportional valves.

Description

technical field [0001] The invention relates to a hydraulic control system, in particular to a transportation device and its hydraulic system. Background technique [0002] There is a kind of pipeline transportation equipment that includes 4 legs, and 4 legs lifting mechanisms, 4 legs extending mechanisms, 4 sets of vertical lifting mechanisms, and 4 sets of horizontal telescopic mechanisms. All mechanism actions are realized by double-acting oil cylinders, and stepless speed regulation is required. The horizontal telescoping mechanism of four legs includes horizontal leg oil cylinders 111, 121, 131 and 141 respectively, the vertical lifting mechanism of four legs includes vertical leg oil cylinders 112, 122, 132 and 142 respectively, and the support of four legs The leg jacking mechanism includes jacking oil cylinders 113, 123, 133 and 143 respectively, and the supporting leg extending mechanism of the four legs includes pushing out oil cylinders 114, 124, 134 and 144 resp...

AI Technical Summary

Problems solved by technology

At present, the more mature TTC200 programmable controller includes 8 PWM output points with feedback, 4 PWM output points without feedback, and 19 DO output points, so to control the hydraulic system, it is necessary to set up 4 TTC200 programmable controllers. A lot of DO output points are wasted, making it impossible for the programmable controller to make the best use of it

It can be seen that the hydraulic system of the existing transportation equipment not only has high cost, but also complicates the programming of the controller

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