Presently constructors use peristaltic concrete pumps for wet shotcreting processes or for transferring the building mixes to the place of their deposit. Fitting the flexible-hose concrete pump with a hydraulic drive allows both making the range of its operating modes much broader and enhancing its reliability. Numerically simulated models of the building mixes feeding processes were developed to design a hydraulic drive to fit the general-service flexible-hose concrete pump and to calculate its basic parameters. Simulation of the building mixes feeding processes gave the characteristic curves of the concrete pump operating parameters, determined the time of ramping the concrete pump up to the steady running mode, and estimated the impact of the transferred mix density and viscosity to the maximal system pressure, supplied power and torque values.
The article discusses the new all-purpose small equipment process usage. On example of the proposed equipment process analysis was maiden computer simulation. Basic machine determining dependences unevenness values are given - concrete pump hose and the value of its reliable operation. Full automation of wet shotcrete working process controlling algorithm developed.
Nowadays, old utility lines are the most critical issue of society. Emergency condition of these utility lines results in their destruction and pollution of ecosystem and imposes threat to life of people residing within risk area. This article offers variants of mobile universal sets of small-sized equipment that allows restoration of destructed and emergency buildings through wet-mix shotcreting process. The universal nature of these sets of equipment allows performance of entire scope of renovation works from preparation of damaged surfaces to applying anti-corrosive coatings. Upon the use of such sets of equipment, it is possible to prepare and lay construction mixtures of different purpose directly at the place of works. Combination of process operation in time enhances the efficiency of equipment and reduces power consumption.
The article considers the possibility to increase the reliability of engineering buildings and facilities due to the use of new small-based equipment both in the operating conditions of technological complexes and in the conditions of technological sets. An example of the use of a technological complex with a universal hose concrete pump for strengthening the supporting columns of a medical centre being built by the wet concrete spraying method is given. The structural scheme of energy consumption by technological sets of small-based equipment is given. The variants of using the technological set of small-sized equipment for concrete work in various ways. One of the universal technological kits of effective small-based equipment is shown. As part of the proposed kit, the base machine can successfully be used universal non-piston hose concrete pump. Dependencies for determining the productivity of a hose concrete pump and the cost of its power for transporting a concrete mixture are proposed.
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