The invention discloses a hydraulic control system of a side loading and unloading crane. The hydraulic control system comprises a double-discharge hydraulic pump (2), wherein the double-discharge hydraulic pump (2) is connected with an engine (1), consists of a hydraulic pump I (2-1) and a hydraulic pump II (2-2), and is connected with a multi-way directional control valve (5) through a load adaptive convergence valve (3), and the multi-way directional control valve (5) is connected with executing mechanisms (9). The hydraulic control system disclosed by the invention has the advantages that the switching of action speeds of the executing mechanisms of the crane can be realized under different load pressures, the maximum output power of the engine can be reduced and the system cost and the system heat amount are reduced; without need of an independent electric control system, the maximum output power and the speed switching of the engine in the whole operation process can be reduced only by virtue of the load adaptive convergence valve, and the system is simple and reliable; the maximum working pressure of the hydraulic control system can be transferred, the actions of all the executing mechanisms can be further accurately controlled, and the safe stability and the synchronism of lifting operation are guaranteed; and the service life of the elements of the system are prolonged.
Hydraulic control system of side loading and unloading crane
2015-07-01
Patent
Elektronische Ressource
Englisch
Europäisches Patentamt | 2015
|Europäisches Patentamt | 2023
|Unloading and loading crane arrangement and assembly of two unloading and loading crane arrangements
Europäisches Patentamt | 2016
|