Hydraulic cylinder clamping open power tong main tong hydraulic control system and control method thereof

The invention relates to an open power tong main tong hydraulic control system clamped by a hydraulic cylinder and a control method of the open power tong main tong hydraulic control system. The invention relates to a quick-connection hydraulic tong which comprises a tong body, a hydraulic cylinder...

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1. Verfasser: QIAO CONGHUA
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to an open power tong main tong hydraulic control system clamped by a hydraulic cylinder and a control method of the open power tong main tong hydraulic control system. The invention relates to a quick-connection hydraulic tong which comprises a tong body, a hydraulic cylinder clamping type tong head, a hydraulic motor, a hand-operated reversing combination valve, a quick-connection combination assembly, a pressure relief device, a shunt pressure maintaining device, a quick-connection mechanical interlocking protection device, an upper shackle direction protection device, a quick-connection hydraulic interlocking protection device and a hydraulic pressurizing device. The pressure relief device, the flow dividing and pressure maintaining device, the hydraulic pressurizing device and the male combination connector are arranged on the hydraulic cylinder clamping type tong head. And the hand-operated reversing combination valve, the quick-connection mechanical interlocking protection device,