| 摘要 |
The invention relates to a highways device with support frame and crown element such as a manhole cover or lid mounted to hinge on the frame. The device is characterised in that the joint hinge (5) comprises a cylindrical axle (14) running through holes (17, 18) in the joint lugs (15, 16) with two lugs (15) fixed to the recess (7) on the frame (2) the holes of which are oblong holes (17) perpendicular to the recess (7) and two lugs (16) fixed to the internal face of the crown element (3), such that the joint axis (14) may be freely moved within the oblong holes (17) of the lugs (15). The invention is of use in highway fittings. |
