A control method for opening and closing the roof

Abstract

The invention belongs to the field of steel-structure buildings, particularly relating to a control method of a retractable roof cover. The control method of the retractable roof cover comprises the following steps of roof stretching: slowly releasing a steel wire rope by a winch, providing gliding power for the roof by an active trolley self-driving mechanism, driving the roof cover to move downwards, synchronously releasing the steel wire rope by the winch, increasing tension of the steel wire rope when the roof cover can glide under gravity action, and releasing the roof cover to move downwards slowly; and roof retracting: controlling the electric winch by using a control system at first to enable the tension of the steel wire rope to reach a certain degree when the trolley self-driving mechanism is in a closed state, then releasing a hydraulic brake on a guide track, continuing controlling the electric winch to increase traction, enabling the roof to move upwards, and retracting the roof at constant speed after the speed of the roof is normal according to set accelerated speed. The control method of the retractable roof cover has the advantages of high structure adaptation, reliable running, simple mechanical structure, convenience in maintaining and the like.

Description

technical field [0001] The invention belongs to the field of steel structure buildings, and in particular relates to a control method for opening and closing a roof. Background technique [0002] With the enhancement of my country's comprehensive national strength and the development of sports, domestic stadiums and gymnasiums with open and close roofs continue to emerge, and continue to extend to hotels, hotels, commercial plazas and other fields. The opening and closing roof divides the traditional roof into a fixed roof unit and a movable roof unit, and the movable unit is carried by the electromechanical system to move according to a predetermined track, thereby realizing the opening and closing action of the roof. [0003] The design of the retractable roof involves multiple disciplines such as architecture, structure, machinery, and automation control. For different opening and closing roofs, the commonly used driving methods include hoist traction, rack and pinion dr...

AI Technical Summary

Problems solved by technology

The rack and pinion driven type requires high installation accuracy and manufacturing accuracy, which greatly increases the manufacturing and construction period and cost; the sprocket chain driven type has high installation accuracy, and the excessive lateral displacement of the trolley will cause the rails and chains to break. It is suitable for Small flat open and close roof; the wheel drive technology is mature, the cost is low, and multi-point layout is adopted, but the control is more complicated, and it is also easily affected by the state of the track contact surface, resulting in insufficient friction and wheel slippage

In addition, the above three driving methods are greatly affected by the deformation of the steel structure, so they are not suitable for flexible and long-span roof structures

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