| 摘要 |
The present invention relates to a protrusion, which is to represent a stone, etc. existing on a road, in a tester for evaluating the durability of a tire tread in an indoor place and, more particularly, to a flow type protrusion for evaluating the durability of a tire tread, where the front end of a protrusion in contact with a tire tread can freely move according to a force applied from the tire, similarly to the movement of a protrusion such as a stone existing in a real road, in order to obtain realistic test results. For this, the protrusion for evaluating the durability of a tire tread causes the occurrence of damage to a tire tread by being in contact with a tire tread (2a) on a rotary test road (1) in order to evaluate the durability of the tire tread in an indoor place. The protrusion comprises a protrusion lower unit (5) which is combined with a bolt hole (3) processed on the test road (1) and where a screw thread (4) is processed on the surface circumference thereof; and a protrusion upper unit (7) which is connected to the protrusion lower unit (5) with a ball joint (6) in order to have various shapes. |
