The friction wear and thermal fatigue cracking of the brake shoe and friction-induced self-excited vibration (frictional flutter) of the disc brake can easily occur during emergency braking of a deep coal mine hoist with at high speed and with a heavy load. Therefore. tribo-brake characteristics between the brake disc and brake shoe during emergency braking of a deep coal mine hoist a... https://parlorcityfurniturers.shop/product-category/guest-chairs/