| 摘要 |
The present invention relates to an industrial manhole seating, and more specifically to a height-adjustable industrial manhole seating adapted to allow the coupling position of the seating and a connecting tube to be adjusted via a coupling ring, such that the height of the seating can be adjusted. The height-adjustable industrial manhole seating of the present invention can be coupled to the connecting tube by adjusting the height of the seating in a straightforward and free fashion, and hence gives the advantage that construction work can be carried out with the height of the seating accurately matched to the ground surface or a finished paved surface, thereby preventing injury to pedestrians caused by raised surfaces and, when installed in a road, providing a comfortable ride when vehicles pass over. There is also the advantage that, even if the height of the finished paved surface changes during construction while coupling the seating and the connecting tube, the height of the seating can be varied without any need for re-processing or replacement work on the connecting tube and hence costs and time are saved during construction. |
