Influence of the brake lining position on the efficiency of the centrifugal friction roller

Abstract

Brake roller is one of the safety elements of a pallet flow rack. At present, most widely used construction of brake roller is centrifugal friction roller (CFR). Efficiency of the CFR is ability to limit speeds of a pallet with different masses in pallet flow rack, and while the lower the speed, the higher efficiency of CFR. One of the parameters that affect to CFR efficiency is frictional lining position on the brake pads of CFR, which can be define with angle of brake lining position. The article is devoted to calculation the influence of angle of a brake lining position, its operating range finding. Analytical research was conducted for the CFR prototype. It is reported that effective areas of the angles is lies closer to the boundaries of operating range and it is non-effective to install a brake lining in the middle of the operating range.

Pallet Motion on a Magnetic Brake Roller

“…For developing the MM, the approaches used for centrifugal friction rollers [10,15] and eddy current braking devices [16,17] were utilised. Fig.…”

“…According to a previous study [15], the following assumption can be made for calculating the sum of forces ∑ 𝑊 resisting the pallet motion on the GFR:  there is no sliding of the pallet on the rollers;  the movement of the pallet on the GFR is uniform, so the forces of inertia of the carrier rollers and pallet reach zero;  the resistance caused by the GFR surface's unevenness is local and can be omitted in the calculations.…”

“…As there is no slip between the pallet and the MBR (based on the studies conducted in [10,15]), the MBR body rotation speed 𝑛 𝑇 is…”

“…2), 𝐷 𝑀𝑃 = 89 mm and 𝐷 𝐵𝐻 = 83 mm, and a two-stage multiplier with a gear ratio of 24 is used based on the analysis conducted in [31]. The efficiency 𝜂 𝑀𝑃 of MBR can be calculated similarly to that of the centrifugal friction roller [10,15]. In this case, according to experimental data [30], the coefficient of magnetic viscosity is 𝛽 1 = 0.113 N s/m for the considered MBR construction (Fig.…”