Safe landing door for vertical hoisting device

Abstract

The invention discloses a safe landing door for a vertical hoisting device. The safe landing door comprises a door frame and door leaves, wherein one door leaf is on the left and the other door leaf is on the right; the door leaves are movably arranged on the door frame; an expansion board is connected at the bottom of the door frame through a movable connection device; after being overturned and put down, the expansion board can cover a clearance between the vertical hoisting device and the landing door; a door frame magnet is arranged at the corresponding part of borders on the two sides of the top of the expansion board and on the two sides of the door frame; and the borders on the two sides of the door frame are made of a metal capable of adsorbing the magnet. According to the safe landing door, a clearance between a landing and the vertical hoisting device can be effectively covered, the potential safety hazard is eliminated, the labor intensity of operators for moving a material from the vertical hoisting device to the landing is reduced, and the operation efficiency is improved.

Description

technical field [0001] The invention belongs to the field of engineering construction safety protection facilities, and relates to a safety landing door of vertical lifting equipment, in particular to a landing door of a construction elevator in engineering construction, a gantry frame and a platform door of a derrick material hoist. Background technique [0002] At present, there is a large gap between the landing doors of the existing vertical lifting transport equipment and the cage door of the vertical lifting transport equipment at each docking station. For example, in Appendix B of JGJ215-2010 "Safety Technical Regulations for Installation, Use and Disassembly of Building Construction Lifts", it is stipulated that the gap between the cage door and the landing should not exceed 50mm, and JGJ88-2010 "Safety Technical Specifications for Gantry and Derrick Material Hoists" Article 6.2.2 stipulates that the gap between the outer edge of the landing platform and the cage doo...

AI Technical Summary

Problems solved by technology

Due to the existence of this gap, the transported small-sized materials or small tools will fall from the gap when they are transported from the cage to the landing, thus causing safety accidents, and in actual construction, the outer edge of the landing platform and the cage door The gap between them is often larger than the above regulations, causing safety hazards

[0003] At the same time, due to the existence of the above-mentioned gap, the plane between the cage and the landing is discontinuous, causing the workers to push the cart vigorously in order to overcome the resistance of the cart formed by the gap when transferring the materials loaded by the trolley from the cage to the landing, resulting in and the hanging cage are subjected to large impact loads, which pose a safety hazard to landing stations and vertical lifting and transportation equipment

[0004] In addition, the existing construction elevator landing doors or gantry and derrick material hoist platform doors mostly use door bolts made of steel pipes, round steel, etc. welded on the door leaves of the landing doors to close the landing doors. The welding workload is heavy and the process is complicated, and the opening and closing of the landing door requires two-handed operation, which is time-consuming, laborious, and inefficient. At present, there is also a way to open and close the landing door driven by a motor, but the structure is complex, the manufacturing cost and energy consumption are high.

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