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Civil engineering lifting platform: In the civil engine […]
Civil engineering lifting platform:
In the civil engineering construction, there are two kinds of wire rope or rack and pinion drive.
Simple lifting platform
Driven by wire ropes, mostly used to transport goods. It consists of a tower, a hanging basket, and a winch. The tower is generally a truss structure that is pulled by a cable and held upright. The gondola is welded with a section steel and is a container for loading goods. The hoist is fixed on the ground, the wire rope is connected to the basket by the pulley at the top of the tower, the traction basket is run up and down, and the operator controls on the ground.
Rack and pinion drive lifting platform
Can transport people and goods. It is mainly composed of a tower, a fence, a cabin, a drive system, a control system, an adding device, a safety device and a lifting system.
It consists of a tube truss consisting of several standard segments. In order to ensure the stability of the tower, it is connected to the building body once at a certain height (about 10 to 15 meters) with an attachment rod. A rack and a rail frame are mounted on the tower section.
2 cabin and fence
The cabin is a container for carrying people or goods, and the fence is a device for enclosing the compartment and the tower, and is located at the bottom of the tower. The mechanical and electrical interlocking of the cabin door and the fence door. When the cabin is lowered into the fence, the door automatically opens and the door automatically closes when it rises. To ensure safe operation. A spring buffer is installed at the bottom of the fence. Protect the cabin from impact when landing, ensuring a smooth shutdown.
3 drive unit
It is located in the engine compartment and consists of a motor, a reducer and a rack and pinion. The gear of the output shaft end of the reducer extends out of the nacelle and meshes with the rack fixed on the tower, and runs up and down with the cabin. There is a control system inside the cabin, and the operator can also run at random. The addition device is located at the top of the cabin and is a manual or mobile small boom-type crane. At the time of the festival, the cabin rises to a certain distance from the top of the tower, and the standard section to be added is lifted to the top of the tower by the crane. After the position is fixed, the adding process is completed. In order to ensure the safe operation of the lifting platform, there are speed limit braking devices, travel limit switches, and door protection switches.
Compared with the simple lifting platform, the rack-and-pinion-driven lifting platform has the characteristics of high height, fast erection speed, safety and reliability, and dual use of people and goods. It is widely used in construction, especially in high-rise buildings.