Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a concrete pump truck and a hydraulic system thereof. The hydraulic system comprises a first hydraulic pump (10), a proportional directional spool valve (20), an allocation hydraulic subsystem (31), a supporting leg hydraulic subsystem (32), a rotation hydraulic subsystem (33), a cooling, stirring, washing hydraulic subsystem (34) and an arm rest hydraulic subsystem (35), wherein an oil inlet of the proportional directional spool valve is communicated with an oil outlet of the first hydraulic pump; oil inlets of the arm rest hydraulic subsystem, the rotation hydraulic subsystem and the supporting leg hydraulic subsystem are connected with an oil outlet of the proportional directional spool valve; and an oil inlet of at least one of the allocation hydraulic subsystem and the cooling, stirring, washing hydraulic subsystem is communicated with an oil outlet of the proportional directional spool valve. In the hydraulic system, oil is supplied for the allocation hydraulic subsystem and/or the cooling, stirring, washing hydraulic subsystem by the first hydraulic pump, so that a hydraulic pump special for supplying oil for the allocation hydraulic subsystem and/or the cooling, stirring, washing hydraulic subsystem is omitted.
The invention discloses a concrete pump truck and a hydraulic system thereof. The hydraulic system comprises a first hydraulic pump (10), a proportional directional spool valve (20), an allocation hydraulic subsystem (31), a supporting leg hydraulic subsystem (32), a rotation hydraulic subsystem (33), a cooling, stirring, washing hydraulic subsystem (34) and an arm rest hydraulic subsystem (35), wherein an oil inlet of the proportional directional spool valve is communicated with an oil outlet of the first hydraulic pump; oil inlets of the arm rest hydraulic subsystem, the rotation hydraulic subsystem and the supporting leg hydraulic subsystem are connected with an oil outlet of the proportional directional spool valve; and an oil inlet of at least one of the allocation hydraulic subsystem and the cooling, stirring, washing hydraulic subsystem is communicated with an oil outlet of the proportional directional spool valve. In the hydraulic system, oil is supplied for the allocation hydraulic subsystem and/or the cooling, stirring, washing hydraulic subsystem by the first hydraulic pump, so that a hydraulic pump special for supplying oil for the allocation hydraulic subsystem and/or the cooling, stirring, washing hydraulic subsystem is omitted.
Concrete pump truck and hydraulic system thereof
25.11.2015
Patent
Elektronische Ressource
Englisch
Flushing device, hydraulic pump, closed hydraulic system and concrete pump truck
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