TESTER FOR GROUND STRENGTH

PURPOSE:To simply measure the characteristic properties of hard ground in terms of cutting force and the penetration force of holding pins by operating an excavator with a cutter while advancing it by alternately penetrating upper and lower holding pins into the ground. CONSTITUTION:A ground strengt...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TAGAYA KOUZOU, KUSAKA OSAMU
Format:	Patent
Sprache:	eng
Schlagworte:	EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING SOIL SHIFTING UNDERGROUND OR UNDERWATER STRUCTURES
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Beschreibung
Zusammenfassung:	PURPOSE:To simply measure the characteristic properties of hard ground in terms of cutting force and the penetration force of holding pins by operating an excavator with a cutter while advancing it by alternately penetrating upper and lower holding pins into the ground. CONSTITUTION:A ground strength tester consists of a driver B and a power member A. The driver B consists of a rotator 2 to turn a cutter 1 and a position holder 20, and the power member A consists of an oil pressure cylinder 3 letting the driver B do advancing and retreating works, the tip of the main piston rod 4 is directly connected with the driver B, and a holder 10. The upper holding pin 15 of the tester is penetrated into the ground, the ground is excavated by the cutter 1 while extending and turning the oil pressure cylinder 3, the lower holding pin 25 is penetrated into the ground, and the oil pressure cylinder 3 is shrunk to restore it to its original position. The strength of the ground is measured in terms of the penetrating force of the holding pins and cutting force.