Optimization of the parameters of three-element grinding discs due to the uniformity of concrete surface treatment for a working width smaller than the disc diameter
More details
Hide details
Czestochowa University of Technology
Publication date: 2021-12-21
Zeszyty Naukowe Politechniki Częstochowskiej seria Budownictwo 2021;27(1):83–91
The process of troweling concrete surfaces has a significant impact on reducing the number of defects, increases the durability of the element and can be used to obtain the required texture and surface roughness. The troweling process is usually performed with the use of disc trowels in which the working elements rotate uniformly around the trowel axis, and the trowel axis moves in a straight line with a uniform motion. Machines of this type are efficient and reliable, therefore they are often used in industrial applications. The disadvantage of this solution is the uneven surface treatment resulting from the kinematics of the machine. The best performance is achieved by trowels with a wheel-shaped working element, because they use the full surface intended for working elements. To increase the uniformity of machining at work, a model was analyzed that changed a single circular disk by a three-element disk consisting of concentric wheel elements and two rings that can move at different rotational speeds. Such a system uses the maximum space for working elements as a full disc. Optimization of the geometry and kinematics of such a system allows to achieve the necessary technological efficiency of mashing while increasing the uniformity of machining. The use of a working width smaller than the diameter of the disk allows you to select the area of influence with the greatest uniformity of impact for a single pass of the disk.