ADSORPTION TYPE ABRASIVE JET CUTTING DEVICE

PURPOSE:To automatically stop at the accident time of a vacuum suction device by providing a pressure switch for emergency stop cutting off a jet pump power source at the degree of vacuum reducing time of the vacuum suction box inside in cutting a concrete member. CONSTITUTION:A concrete member 1 is...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HASHIMOTO KOSAKU, TOKIOKA MASATO, SAKAI YUKIO, SHIMAZAKI KEISUKE, SEKIGUCHI RYUICHI, SANO HIDEO, HARA HISAHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL CUTTING CUTTING-OUT GRINDING HAND CUTTING TOOLS PERFORATING PERFORMING OPERATIONS POLISHING PUNCHING SEVERING SEVERING BY MEANS OTHER THAN CUTTING STAMPING-OUT TRANSPORTING WORKING CEMENT, CLAY, OR STONE WORKING STONE OR STONE-LIKE MATERIALS
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Beschreibung
Zusammenfassung:	PURPOSE:To automatically stop at the accident time of a vacuum suction device by providing a pressure switch for emergency stop cutting off a jet pump power source at the degree of vacuum reducing time of the vacuum suction box inside in cutting a concrete member. CONSTITUTION:A concrete member 1 is cut by the abrasive jet injected from the abrasive jet nozzle 3 which moves along the concrete member 1 and the slurry containing the water and cut chips of the vacuum suction box 2, 6 inside is discharged by its suction by a vacuum pump 30. When the adsorption force of the vacuum suction box 2, 6 is reduced with an accident being caused on a vacuum suction device, the power source of a jet pump 8 is cut off by the pressure switch S for emergency stop and the injection of the abrasive jet is automatically stopped. Thus, the vacuum suction box of a back guard side and a cutting unit are not dropped and safe, also the water leakage from the vacuum suction box can be prevented.