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[CN 201721924555.0] Composite fast piston cylinder for hydraulic press
[CN 201721924555.0] Title of compound fast piston cylinder for hydraulic press: Application number of compound fast piston cylinder for hydraulic press: CN 201721924555.0 Applicant: Jiangsu Xuzhou Forging Machine Tool Factory Group Co., Ltd. Application date: 2017-12-29 Patent type: Utility model The utility model discloses a compound fast piston cylinder for hydraulic press. The main oil cylinder includes a cylinder barrel and a main piston rod inserted into the cylinder barrel from below; the main piston rod extends into the end of the cylinder. The main piston head sets the inner space of the cylinder into a top cavity and a bottom cavity. The cylinder is provided with an oil port I on the cylinder wall surrounding the top cavity. The cylinder is provided with an oil port II on the cylinder wall surrounding the bottom cavity. The bottom end of the main piston rod extending out of the cylinder is internally provided with a feeding piston rod, A round nut is sleeved into the feeding piston rod from the bottom end and fixed on the inner cavity wall of the main piston rod, and a guide sealing ring II is arranged between the round nut and the feeding piston rod. The utility model adopts a composite fast piston cylinder structure, and the feeding piston rod is installed in the main piston rod. The structure is compact and saves a lot of material costs; after the main cylinder is installed on the hydraulic press, the hydraulic equipment can be improved. Utilization rate saves equipment costs and human resources.
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