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A platform for research: civil engineering, architecture and urbanism
Hydraulic system of walking type pile driver
The invention discloses a hydraulic system of a walking type pile driver. The hydraulic system comprises a main winch, an electric proportional variable pump, a motor, a first oil way, a second oil way, a multi-way valve and an auxiliary pump; the motor is used for driving the main winch to ascend and descend, and the electric proportional variable pump is connected to a first port and a second end port of the motor through the first oil way and the second oil way respectively, the multi-way valve comprises a first valve bank and a second valve bank, wherein the first valve bank, the motor, the first oil way, the second oil way and the electric proportional variable pump form a closed system; and the auxiliary pump is connected with the multi-way valve, and the auxiliary pump, the second valve bank and the motor form an open system. According to the system, the open system and the closed system can be switched, when the main winch is controlled through the closed system, the construction efficiency is improved, the ascending and descending speed of the main winch are improved, the construction time during non-grouting is shortened, ascending and descending precision of the main winch is provided, and when a drilling tool is buried, switching to the open system can be conducted to pull out the drilling tool.
本发明公开了一种步履式打桩机液压系统，其包括主卷扬、电比例变量泵、马达、第一油路、第二油路、多路阀和辅助泵；马达用于驱动主卷扬的上升和下降，所述电比例变量泵通过第一油路、第二油路分别与马达的第一端口和第二端口相连；多路阀包括第一阀组和第二阀组，所述第一阀组、马达、第一油路、第二油路和电比例变量泵组成闭式系统；所述辅助泵与所述多路阀相连，所述辅助泵、第二阀组、马达组成开式系统。本发明中开式系统和闭式系统可切换，通过闭式系统控制主卷扬时，提高了施工效率，通过控制提高主卷扬的上升下降速度，缩短了非喷浆时的施工时间，并提供主卷扬的升降精度，在出现钻具被埋的情况，可切换开式系统，以拔出钻具。
Hydraulic system of walking type pile driver
The invention discloses a hydraulic system of a walking type pile driver. The hydraulic system comprises a main winch, an electric proportional variable pump, a motor, a first oil way, a second oil way, a multi-way valve and an auxiliary pump; the motor is used for driving the main winch to ascend and descend, and the electric proportional variable pump is connected to a first port and a second end port of the motor through the first oil way and the second oil way respectively, the multi-way valve comprises a first valve bank and a second valve bank, wherein the first valve bank, the motor, the first oil way, the second oil way and the electric proportional variable pump form a closed system; and the auxiliary pump is connected with the multi-way valve, and the auxiliary pump, the second valve bank and the motor form an open system. According to the system, the open system and the closed system can be switched, when the main winch is controlled through the closed system, the construction efficiency is improved, the ascending and descending speed of the main winch are improved, the construction time during non-grouting is shortened, ascending and descending precision of the main winch is provided, and when a drilling tool is buried, switching to the open system can be conducted to pull out the drilling tool.
本发明公开了一种步履式打桩机液压系统，其包括主卷扬、电比例变量泵、马达、第一油路、第二油路、多路阀和辅助泵；马达用于驱动主卷扬的上升和下降，所述电比例变量泵通过第一油路、第二油路分别与马达的第一端口和第二端口相连；多路阀包括第一阀组和第二阀组，所述第一阀组、马达、第一油路、第二油路和电比例变量泵组成闭式系统；所述辅助泵与所述多路阀相连，所述辅助泵、第二阀组、马达组成开式系统。本发明中开式系统和闭式系统可切换，通过闭式系统控制主卷扬时，提高了施工效率，通过控制提高主卷扬的上升下降速度，缩短了非喷浆时的施工时间，并提供主卷扬的升降精度，在出现钻具被埋的情况，可切换开式系统，以拔出钻具。
Hydraulic system of walking type pile driver
一种步履式打桩机液压系统
ZHANG LIANGFU (author) / HUANG YANHAI (author) / MAO WEI (author)
2020-06-05
Patent
Electronic Resource
Chinese
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