On some issues of pneumatic drive dynamics (applied to rock loading machines)
Abstract
The problems of kinematics and dynamics of the shovel of loading machines are represented by several works of domestic technical literature and few substantial foreign works. Among them the most interesting are the articles by S. G. Kalmykov, who compared the kinematics and dynamics of three types of rolling handles (shovels), determined the force in the handle chain and the power consumed by loading machines, and K. A. Lokhanin, who justified the design changes in the loading machine associated with the replacement of pneumatic motors with electric ones. At the same time, K. A. Lokhanin considered the kinematics and dynamics of the shovel. The starting point of these theoretical studies is the independence of the number of revolutions of the motor shaft from the load during the shovel movement. The result of this simplification, which makes us abstract from the relationship existing in any engine between the load and the number of revolutions, is a huge error in the calculations.
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References
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