Large-torque drilling machine rear clamp holder

The utility model provides a large-torque drilling machine rear clamping device, which belongs to the technical field of drilling machine rear clamping devices and comprises a casing, a front end cover, a rear end cover, a hydraulic control one-way valve, a piston, a chuck and a clamping block. A pi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: CAO YANG, MAO WEIHONG
Format: Patent
Sprache:chi ; eng
Schlagworte:
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Beschreibung
Zusammenfassung:The utility model provides a large-torque drilling machine rear clamping device, which belongs to the technical field of drilling machine rear clamping devices and comprises a casing, a front end cover, a rear end cover, a hydraulic control one-way valve, a piston, a chuck and a clamping block. A piston groove is formed in the inner wall of the shell, and an inserting groove, a first oil way and asecond oil way are formed in the rear end face. The hydraulic control one-way valve is inserted into the inserting groove, the oil inlet is communicated with the first oil way, and the oil outlet iscommunicated with the rear end of the piston groove; the second oil path is communicated with the front end of the piston groove; a plurality of clamping block mounting grooves are formed in the piston; the depth of the clamping block mounting groove is gradually reduced from front to back; the chuck penetrates into the piston column from the front end cover and is provided with a clamping block clamping groove. The clampi