Intelligent and sensing type construction hoist

Abstract

The invention discloses an intelligent and sensing type construction hoist. A feeding door frame is the same as a discharging door frame in size and specification, identical bolt connection holes are formed in the feeding door frame and the discharging door frame, the feeding door frame and the discharging door frame are connected with a construction hoist cage box body through the bolt connection holes and connection bolts, and a cage box door closing safety switch device comprises a switch body arranged on the upper portion inside the cage box body. A switch arm which controls the working status of the switch body is arranged on the switch body, and a slope protrusion is arranged on the inner face of the cage box door. A transmission mechanism is connected with a beam of the top of a cage by the adoption of the inserted type, and an intelligent frequency conversion system is adopted by a control system. The intelligent and sensing type construction hoist is reasonable in structure, a feeding door and a discharging door are made to be the universal feeding door frame and the universal discharging door frame, and the universal feeding door frame and the universal discharging door frame are interchanged in a front-back mode. When a hoist cage box door is not closed, power failure is carried out on a system within the safety stroke range, the hoist cage box door can timely conduct reaction, and high-altitude safety of persons and goods in the hoist is ensured. The inserted transmission mechanism enables the hoist to be rapid and convenient to assemble and disassemble, vibrations are reduced, and stability and safety of the hoist in the process of operation are improved.

Description

technical field [0001] The invention relates to a construction hoist. Background technique [0002] Elevators have been widely used as vertical transportation equipment for conveying personnel and scattered materials in general high-rise buildings. There are dozens of varieties produced in my country, and more than 90% are 1-2 ton class, but their problems are basically the same as those of tower cranes. . The most important reasons are as follows: [0003] 1) Transmission mechanism [0004] The transmission mechanism of traditional construction elevators generally has an efficiency of about 60%, because traditional construction elevators start with a single common frequency, and the selection of high-efficiency transmission mechanisms is contradictory to mechanical shock and comfort (simply speaking, the efficiency of transmission mechanisms for traditional construction elevators The higher the start, the greater the impact of the parking brake) 2) Control system The cont...

AI Technical Summary

Problems solved by technology

The control method of ordinary elevators is realized by contactor control. The speed is single, the impact of starting and braking is large, the damage to the structure and mechanism is serious, the electrical components are also easily damaged, and the operating speed is relatively low, generally 33 / min. The driver's control not only affects the construction speed but also affects the benefits of the construction company

If the speed is simply increased, the acceleration will be too large, the impact on the structure and mechanism will be too large, and the wear of the rack and pinion and the brake disc will be accelerated, thereby reducing the reliability of operation.

3) Starting and braking system Ordinary lifts are started directly or star-delta with reduced pressure. The impact is very large, causing serious damage to the motor and electrical components. At the same time, the materials in the lift are easy to fall, especially some construction site lifts. There is also the phenomenon of taking people. There is a great potential safety hazard

The brakes of ordinary elevators are forced by mechanical brakes. When the elevator suddenly drops from high speed to zero speed, due to the effect of inertia, not only the structure and mechanism are damaged, but also the materials in the elevator are easy to fall. security risks

4) Leveling system There is no crawling process when the ordinary elevator decelerates to the leveling layer, and it decelerates directly from the running speed to zero speed. The selection of the leveling layer of the elevator is realized by manual control by the driver by visual inspection. The efficiency is low, and it is often necessary to move up and down. It takes several times to accurately stop the layer

It not only reduces the efficiency, but also increases the fatigue of the drag and control system, shortens the service life, and at the same time, it will cause the material inside to be unable to be transported if the leveling layer is not in place, which wastes time and affects work efficiency.

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