20140314585 | DETECTING DEVICE AND PUMPING EQUIPMENT FOR CONCRETE - A detecting device for detecting the volume of a material in a material container and a concrete pumping apparatus comprising the above detecting device are disclosed. The detecting device comprises a soft container full of a medium; a medium container in communication with the soft container; a volume detecting sensor for detecting the volume of the medium in the medium container; the soft container is provided within the material container and immersed in the material of the material container, and under the extrusion of the material, the medium in the soft container enters the medium container, the volume detecting sensor detects the volume of the medium in the medium container; and the volume of the material can be calculated according to a preset relationship between the volume of the medium in the medium container and the volume of the material in the material container. | 10-23-2014 |