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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Taimarov Mikhail Alexandrovich doctor of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State Power Engineering University The organization address: 420066, Russia, Kazan, Krasnoselskaya st., 51 Lavirko Yuri Vasilyevich candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1
Title of the articleDevelopment of a concrete mixer with additional technological capabilities
Abstract.Problem statement. The demand for concrete mixers, or «mixers», in Russia is growing not only in connection with large monolithic house-building but also with the needs of a small segment of house-building – one-story and two-story houses of the private sector. Monolithic housing construction is equipped with good access roads and an established concrete shipment system. Therefore, with any design of the mixer truck, its unloading for the time allotted by the concrete manufacturer is provided. For a small segment of homebuilding, the use of branded concrete mixer trucks is usually associated with the lack of access roads and mechanized shipment, small single quantities of concrete, inconvenience and constraint of the concrete structures being erected. In this regard, there is an increasing need for small-capacity concrete mixers, which are inexpensive and do not have mechanized concrete unloading. Results. In most cases, the concrete unloading equipment for such concrete mixer trucks is limited to one pullout tray. The time spent on unloading concrete is increasing compared to branded concrete mixer trucks. Each concrete manufacturer has its own rate for unloading concrete, on average, not more than 10 minutes per 1m3. For an extra downtime at unloading, a fine of 500 to 1000 rubles per 1 hour is charged. On a concrete mixer in the design of a rotating tank, an Archimedes spiral is used, which allows clockwise rotation to load concrete from one gutter to another, while the concrete remains in the tank [1-5]. Therefore, the downtime of concrete mixers during the shipment of concrete is associated with the further transportation of concrete in the tray. The standard extenders of the tray and sleeves, which are equipped with domestic concrete mixer trucks, are inefficient since the movement of concrete in them is gravitational. Conclusions. The significance of the results obtained for the construction industry consists in the development of a scheme for using a two-screw concrete discharge system in confined and confined spaces, which significantly reduces the time of concrete discharge and eliminates manual labor.
Keywords.development, concrete mixer truck, screw, concrete, feed, mixer, hydraulic drive, calculation.
For citations:Taimarov M.A., Lavirko Y.V. Development of a concrete mixer with additional technological capabilities // Izvestiya KGASU. 2020. №2() P.81-.

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