Abstract
The problems of determining the parameters of a traction machine’s wheel mover with a locked asymmetrical balance bar operation, taking into account the kinematic mismatch arising from the redistribution of the vertical reactions at the driving wheels due to off-center pushing force, have been considered. An algorithm for calculating traction and braking forces, as well as drive wheels’ slippage and skid of an asymmetric balance bar based on their traction balance and the condition of equal actual speeds under a variable vertical load, have been presented. As a result of research it has been found that the greatest additional loads in the drive and tire wear of the wheel mover with a locked asymmetric balance bar will occur when it moves in transport mode on a support surface with high traction properties.
Highlights
The driving wheels balanced suspension is widely used in various transport and traction technological machines
The calculation of the algorithm for determining the parameters of the operation of the blocked wheel mover of the asymmetric balance bar of the traction machine based on the above equations (4) - (13) and conditions is carried out using Mathcad engineering software for the following initial data [2, 8] in accordance with the calculation scheme adoption. r0 = 0,56 m; b = 1,6 m; e = 0,1 m; ε = 0,25 m; Gб = 80 kN; Еш = 640 kN/m; kδ = 0,1; fk = 0,05
From the analysis of the graphical dependencies presented, it can be seen that the difference in the power radii rс1 and rс2 caused by the redistribution of the vertical loads R1 and R2 on the balance bar's driving wheels has a significant effect on the power load of the wheel mover of an asymmetric balance bar with a locked drive in the zone of small values of traction forces
Summary
The driving wheels balanced suspension is widely used in various transport and traction technological machines. Ensuring the condition (1) of equality of the driving wheels’ actual speeds and the difference in their power radii caused by different values of the vertical loads acting on them will be carried out by slipping and skidding of these wheels.
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