Duplex oil cylinder and beam opening and closing device

• Main Authors: GU JIANFENG, CHEN YUNFEI, SHU DONGFANG
• Format: Patent
• Language: Chinese; English
• Published: 05.09.2017
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; WEAPONS

The invention provides a duplex oil cylinder and a beam opening and closing device, and belongs to the field of mechanical equipment. The duplex oil cylinder comprises a first oil cylinder, a second oil cylinder and a connecting pipe. The first oil cylinder is provided with a first rod cavity and a first rodless cavity which are mutually isolated, the first oil cylinder is also provided with a first liquid inlet and a first liquid outlet, the first liquid inlet is communicated with the first rod cavity, and the first liquid outlet is communicated with the first rodless cavity. The second oil cylinder is provided with a second rod cavity and a second rodless cavity which are mutually isolated, the second oil cylinder is also provided with a second liquid inlet and a second liquid outlet, the second liquid inlet is communicated with the second rodless cavity, and the second liquid outlet is communicated with the second rod cavity. The first oil cylinder is back to the second oil cylinder, and the first liquid o