| 摘要 |
PURPOSE: An expansion joint for bridges or roads is provided to prevent the road from being frozen in the winter by laying a heating wire under a paved layer. CONSTITUTION: An expansion joint(100) for bridges or roads comprises an expansion joint unit(110), a rotary drum(120), and a power generating unit(130). The expansion joint unit is under a paved layer(10). The rotary drum is placed inside the expansion joint unit. The upper part of the rotary drum is exposed to the outside. The power generating unit is placed inside the rotary drum. The power generating unit converts the rotary power into electricity. |
