The invention relates to a full-hydraulic anchor cable tensioning machine tool and an oil supply method of a hydraulic jack. The full-hydraulic anchor cable tensioning machine tool comprises a pump body for outputting a working medium, and the output end of the pump body communicates with a reversing valve; an oil feeding connector communicates with the output end of the pump body, a high-pressure connector communicates with a pressurization pipeline, and a pressure relief connector communicates with a pressure relief pipeline; a hydraulic control one-way valve is arranged on a pressurizing pipeline, and a control pressure pipeline of the hydraulic control one-way valve communicates with the pressurizing pipeline; when the oil feeding connector communicates with the pressure relief connector, an oil tank connector communicates with the high-pressure connector, and when the oil feeding connector communicates with the pressure relief connector and the opening pressure set by the hydraulic control one-way valve is reached, the hydraulic control one-way valve is opened; the full-hydraulic anchor cable tensioning machine tool further comprises a hydraulic jack,the hydraulic jack comprises a high-pressure oil cylinder and a small hydraulic oil cylinder, a high-pressure oil cavity communicates with the pressurizing pipeline, and the pressure relief pipeline communicates with a pressure relief oil cavity; and a pressurizing oil cavity of the small hydraulic oil cylinder communicates with the pressure relief oil cavity, and a jacking piston is arranged in the small hydraulic oil cylinder. The full-hydraulic anchor cable tensioning machine tool has the effect of reducing the retraction amount when a steel strand is tensioned.
本申请涉及一种全液压锚索张拉机具及液压千斤顶的供油方法,其包括输出工作介质的泵体,泵体的输出端连通有换向阀;送油接口与泵体的输出端连通,高压接口上连通有加压管路,泄压接口上连通有泄压管路;加压管路上设置有液控单向阀,液控单向阀的控制压力管道与加压管路连通;当送油接口与泄压接口连通时,油箱接口与高压接口连通,当送油接口与泄压接口连通,且达到液控单向阀设定的开启压力时,液控单向阀开启;还包括液压千斤顶,液压千斤顶包括高压油缸和液压小油缸,高压油腔与加压管路连通,泄压管路与泄压油腔连通;液压小油缸的加压油腔与泄压油腔连通,液压小油缸内设置有顶压活塞。本申请具有降低钢绞线张拉时的回缩量的效果。
Full-hydraulic anchor cable tensioning machine tool and oil supply method of hydraulic jack
一种全液压锚索张拉机具及液压千斤顶的供油方法
2021-11-30
Patent
Elektronische Ressource
Chinesisch
IPC: | F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last / E04G SCAFFOLDING , Baugerüste |
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