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发明公开
CN102678664A 液压支撑油缸及起重机 无效 - 驳回

液压支撑油缸及起重机
摘要：
本发明提供一种液压支撑油缸及起重机，其中液压支撑油缸，包括缸体，以及与所述缸体配合的活塞杆，所述缸体的无杆腔上开设有无杆腔油口，所述缸体的端部设置有缸头，所述缸头上形成有插装式液控单向阀，插装式液控单向阀具有插装式液控单向阀进口油路通道、插装式液控单向阀出口油路通道和有杆腔油路通道，所述插装式液控单向阀进口油路通道用于和油泵连通，所述插装式液控单向阀出口油路通道和所述无杆腔油口通过设置在所述缸体内部的无杆腔通道连通，所述有杆腔油路通道用于与控制油路连通。上述技术方案提供的液压支撑油缸，将插装式液控单向阀直接集成在缸头上，保证了液压支撑油缸使用的安全性。
摘要（英）：

The invention provides a hydraulic support oil cylinder and a crane. The hydraulic support oil cylinder comprises a cylinder body and a piston rod matched with the cylinder body, wherein a rodless cavity oil port is formed on a rodless cavity of the cylinder body; a cylinder head is arranged at the end of the cylinder body; a cartridge hydraulic control one-way valve is arranged on the cylinder head and provided with a cartridge hydraulic control one-way valve inlet oil circuit channel, a cartridge hydraulic control one-way valve outlet oil circuit channel and a rod cavity oil circuit channel; the cartridge hydraulic control one-way valve inlet oil circuit channel is communicated with an oil pump; the cartridge hydraulic control one-way valve outlet oil circuit channel is communicated with the rodless cavity oil port through a rodless cavity channel arranged in the cylinder body; and the rod cavity oil circuit channel is communicated with a control oil circuit. Through the technical scheme, the cartridge hydraulic control one-way valve is directly integrated into the cylinder head, so that the using safety of the hydraulic support oil cylinder is ensured.

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