Hydraulically driven moving floors are given various names, including sliding floor, walking floor or push floor. Moving floor transport is used mainly in stationary conveyance systems and semi-trailers to convey goods or bulk material without the need for other equipment. This is allowed by a special floor construction, which must be completely gapless. The floor is constructed out of slats. It uses a hydraulic drive to produce the automatic movement. This conveys the goods to be moved in the desired direction.
The floor slats slide sideways (longitudinally). They interlock without any gaps. Each longitudinal track is arranged into zones, which are driven by a hydraulic cylinder. The slat segments are pushed in the specified direction. When unloading a semi-trailer, for example: the three longitudinal tracks are pushed underneath the goods. Then, the tracks and the load move towards the unloading area.
Moving floors can be used flexibly in vehicles. They can convey not only loose materials, but also packaged or palletised goods. This allows trailers to reach a useful volume of 100 cubic metres. Such trailers are suitable for conveying voluminous and lightweight, as well as very loose goods. A moving floor trailer is loaded either from the side or horizontally through the back.
The truck requires a second drive to operate the moving floor trailer. This should be a hydraulic pump. A moving floor trailer makes it possible to unload even in a low-ceiling bay or onto soft ground. Unloading in this fashion requires no further equipment. The trailer does not have to be tipped to unload, for instance. Moving floors are used in stationary conveyance systems of special bunkers. Moving floor transport requires little maintenance and saves space, which are both major advantages in conveying applications. Because they discharge steadily, they allow materials to be conveyed that are otherwise difficult to transport.
Moving floors are used for feeding pieces of wood into boilers in biomass power plants, for example, or for transporting large quantities of bulk materials in industry.