Conveyor belt
AssigneeThe Yokohama Rubber Co., Ltd.
InventorsAtsushi Miyajima, Etsuko Suzuki
Life of this patent
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Abstract
A conveyor belt includes an upper cover rubber and a lower cover rubber disposed above and below a core layer; and a protective fiber layer made from high strength fiber disposed at least in a central portion of the upper cover rubber in a belt width direction and extending continuously in a belt longitudinal direction; an elastic modulus E of the protective fiber layer in the belt longitudinal direction being a low elastic modulus E1 equal to or less than a predetermined value when a tension in the belt longitudinal direction acting on the conveyor belt is equal to or less than a setting tension Ts, and being a high elastic modulus E2 higher than the low elastic modulus E1 when a predetermined high tension higher than the setting tension Ts is acting on the conveyor belt.
Claims14
A conveyor belt, comprising:
- a core layer;
- an upper cover rubber and a lower cover rubber disposed above and below the core layer;
- and
- a protective fiber layer made from high strength fiber disposed at least in a central portion of the upper cover rubber in a belt width direction and extending continuously in a belt longitudinal direction;
- an elastic modulus of the protective fiber layer in the belt longitudinal direction being a low elastic modulus equal to or less than a predetermined value when a tension in the belt longitudinal direction acting on the conveyor belt is equal to or less than a setting tension acting when the conveyor belt is mounted in a tensioned state between pulleys;
- the elastic modulus of the protective fiber layer in the belt longitudinal direction being a high elastic modulus higher than the low elastic modulus when a predetermined high tension higher than the setting tension is acting on the conveyor belt;
- and
- the low elastic modulus ranges from 10 N/mm·ply to 100 N/mm·ply and the high elastic modulus ranges from 200% to 10000% of the low elastic modulus.
Dependencies are inferred from the claim text.