Powerful extension spring

The utility model discloses a strong extension spring which comprises a spring body, an upper hook and a lower hook, the top end of the spring body is fixedly connected with a connecting pipe, the inner wall of the connecting pipe is provided with a first internal thread, the bottom end of the sprin...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	FAN XIUYUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING SHOCK-ABSORBERS SPRINGS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The utility model discloses a strong extension spring which comprises a spring body, an upper hook and a lower hook, the top end of the spring body is fixedly connected with a connecting pipe, the inner wall of the connecting pipe is provided with a first internal thread, the bottom end of the spring body is fixedly connected with a connecting rod, the outer surface of the connecting rod is provided with a first external thread, and the first external thread is provided with a second internal thread. The size of the connecting rod is matched with the internal size of the connecting pipe, the bottom end of the upper hook is fixedly connected with a supporting rod, the top end of the lower hook is fixedly connected with a supporting pipe, the outer surface of the supporting rod is provided with a second external thread, and the inner wall of the supporting pipe is provided with a second internal thread. The size of the supporting rod is matched with the internal size of the connecting pipe, and the size of the