Coal mining machine tie bar pre-tightening force real-time detection device

The utility model discloses a coal mining machine tie bar pre-tightening force real-time detection device, which comprises a left traction part, a connecting frame, a right traction part, a hydraulic tie bar, a left groove and a right groove, the end part of the hydraulic tie bar extending into the...

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Bibliographische Detailangaben
Hauptverfasser:	LIU NING, SONG XIAOJUN, GAO ZHIQIANG, LI YANG, MA HONGLIANG, ZHENG XIAOCHUN, SUN WEIGENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The utility model discloses a coal mining machine tie bar pre-tightening force real-time detection device, which comprises a left traction part, a connecting frame, a right traction part, a hydraulic tie bar, a left groove and a right groove, the end part of the hydraulic tie bar extending into the left groove is provided with a fixing nut, the end part of the hydraulic tie bar extending into the right groove is provided with a hydraulic nut, and the left groove and the right groove are connected through a connecting rod. A detection device is arranged on the hydraulic nut and comprises a pressure sensor. The hydraulic traction device is simple in structure, reasonable in design and small in size, the left traction part, the connecting frame and the right traction part are connected into a whole by arranging the hydraulic nut and the fixing nut to be matched with the hydraulic pull rod, and when the hydraulic pull rod is subjected to large impact force, compressed oil in a hydraulic cavity of the hydraulic nu