A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
BULLDOZING HYDRAULIC SYSTEM WITH BULLDOZING BLADE FLOATING FUNCTION AND EXCAVATOR
Disclosed are a bulldozing hydraulic system with a bulldozing blade floating function and an excavator. The bulldozing hydraulic system comprises a load-sensitive pump, a bulldozing blade oil cylinder, a load-sensitive valve and a station switching mechanism. The load-sensitive valve comprises a four-position reversing valve. When the four-position reversing valve is at a first station, oil enters a small-cavity A port of the bulldozing blade oil cylinder and returns from a large-cavity B port, and a bulldozing blade is controlled to ascend; when the four-position reversing valve is located at a second station, oil enters the large-cavity B port of the bulldozing blade oil cylinder and returns from the small-cavity A port, and the bulldozing blade is controlled to descend; and when the four-position reversing valve is at a third station, the small-cavity A port and the large-cavity B port of the bulldozing blade oil cylinder are communicated with an oil tank, such that the bulldozing blade floating function is realized. The invention solves the problem that an existing excavator bulldozing blade does not have a floating function; a reversing valve integration mode is adopted, such that a high-voltage electromagnetic reversing hydraulic element does not need to be externally connected between the reversing valve and the bulldozing blade oil cylinder; and due to element integration, space is saved, and cost is reduced.
BULLDOZING HYDRAULIC SYSTEM WITH BULLDOZING BLADE FLOATING FUNCTION AND EXCAVATOR
Disclosed are a bulldozing hydraulic system with a bulldozing blade floating function and an excavator. The bulldozing hydraulic system comprises a load-sensitive pump, a bulldozing blade oil cylinder, a load-sensitive valve and a station switching mechanism. The load-sensitive valve comprises a four-position reversing valve. When the four-position reversing valve is at a first station, oil enters a small-cavity A port of the bulldozing blade oil cylinder and returns from a large-cavity B port, and a bulldozing blade is controlled to ascend; when the four-position reversing valve is located at a second station, oil enters the large-cavity B port of the bulldozing blade oil cylinder and returns from the small-cavity A port, and the bulldozing blade is controlled to descend; and when the four-position reversing valve is at a third station, the small-cavity A port and the large-cavity B port of the bulldozing blade oil cylinder are communicated with an oil tank, such that the bulldozing blade floating function is realized. The invention solves the problem that an existing excavator bulldozing blade does not have a floating function; a reversing valve integration mode is adopted, such that a high-voltage electromagnetic reversing hydraulic element does not need to be externally connected between the reversing valve and the bulldozing blade oil cylinder; and due to element integration, space is saved, and cost is reduced.
BULLDOZING HYDRAULIC SYSTEM WITH BULLDOZING BLADE FLOATING FUNCTION AND EXCAVATOR
HYDRAULISCHES BULLDOZING-SYSTEM MIT BULLDOZING-SCHAUFEL-SCHWIMMFUNKTION UND BAGGER
SYSTÈME HYDRAULIQUE DE BULLDOZER AYANT UNE FONCTION DE LAME FLOTTANTE DE BULLDOZER ET EXCAVATRICE
LI JINPENG (author) / SONG ZHIKE (author) / LIU YUEJI (author) / MA LIGUO (author) / ZHANG FEI (author) / WANG RONGBIAO (author) / YUE SUHUA (author) / SHANG FULI (author) / PAN SAISAI (author) / WANG HAICHENG (author)
2024-09-04
Patent
Electronic Resource
English
IPC:
E02F
Baggern
,
DREDGING
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