Prefabricated box girder prestress tensioning equipment

• Main Authors: WU LIN, HOU ZHENXIAN, FEI PENG, XU ZHIPENG
• Format: Patent
• Language: Chinese; English
• Published: 15.01.2021
• Subjects: ASSEMBLY OF BRIDGES; BLASTING; CAPSTANS; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; CRANES; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FIXED CONSTRUCTIONS; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HAULING; HEATING; HOISTING; HOISTS; HYDRAULICS OR PNEUMATICS IN GENERAL; LIFTING; LIGHTING; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES; MECHANICAL ENGINEERING; OR VIADUCTS; PERFORMING OPERATIONS; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; TACKLES, e.g. PULLEY BLOCKS; TRANSPORTING; WEAPONS; WINCHES

Prestressed tensioning equipment for a prefabricated box girder relates to the field of tensioning equipment and comprises a mounting frame, the mounting frame comprises a bottom plate, a supporting plate is arranged on the bottom plate in a sliding fit mode, an oil pump is placed on the supporting plate and connected with a jack through an oil pipe, a plurality of vertical lifting mechanisms arearranged on the bottom plate, and the vertical lifting mechanisms are connected with a sealing mechanism. Supporting legs are arranged below the bottom plate, a sliding mechanism is fixedly connectedto the sealing mechanism, a hoisting mechanism is installed on the sliding mechanism, and the hoisting mechanism is connected with a jack. The whole structure of the device can be lowered by means ofthe vertical lifting mechanism, the oil pump is integrated in the bottom plate to enable the tensioning device to be compact, miniaturization design is achieved, potential safety hazards are eliminated by means of the design of