Winding device and precast beam hoisting method

Abstract

The invention relates to a winding device and a precast beam hoisting method. The winding device comprises a portal frame, a hoisting mechanism and a protection device, the portal frame is arranged on the ground, walking wheels are arranged at the bottom of the portal frame, the hoisting mechanism comprises a motor, a winding drum and a steel cable, and the protection device comprises a fixing shaft, a rotating wheel, a first action ring, a second action ring, a control ring, a clamping block, a balancing weight and a brake rod set. The steel cable is pulled out of the winding drum and wound on the slope sliding table for preset turns and then droops to suspend a heavy object. During working, the control ring is matched with the first action ring and the second action ring, so that the brake rod group has different deflection directions and deflection angles, and then different brake strategies are provided during heavy-load top rushing, heavy-load falling, light-load top rushing and light-load falling; in this way, in different states, appropriate braking schemes are adopted to ensure that all parts and the steel cable cannot bear huge impact, the braking modes are diversified, and the use performance of equipment is high.

Description

technical field [0001] The invention relates to the field of hoisting and hoisting, in particular to a hoisting device and a prefabricated beam hoisting method. Background technique [0002] At present, in order to facilitate the construction, the beams are generally prefabricated, and then the beams are transported to the designated place for construction and molding during construction, so as to complete the installation of the beams. Perform demolition to simplify construction. During the installation of prefabricated beams, hoisting and hoisting equipment are required to complete the transfer and lifting of prefabricated beams. [0003] The control system of the current electronically controlled hoist is to realize the speed control of each node position of start, acceleration, primary deceleration, secondary deceleration, and stop according to the master control signal. However, when the master control equipment fails, including the abnormality of its control power su...

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