Height-adjustable road manhole

Abstract

The invention discloses a road manhole cover with adjustable height, comprising a manhole cover, an upper manhole and a lower manhole which match with the manhole cover, at least two lifting devices and at least two auxiliary supports, which are connected with the upper manhole and the lower manhole. The lifting devices and the auxiliary supports are evenly distributed on the circumference of the upper underside of the lower manhole at intervals, and the screws at the lower parts of the lifting devices and the auxiliary supports are connected with the threads of the lower manhole; wherein the auxiliary supports contact with the lower underside of the upper manhole and the lifting devices are hinged at the lower part of the upper manhole. The road manhole cover is convenient to be adjusted in height, low in cost, stable in structure and adjustable in height.

Description

(1) Technical field [0001] The invention relates to a height-adjustable road manhole cover, which belongs to the technical field of road pavement wellhead facilities. Specifically, it relates to a road with an upper wellhead and a lower wellhead, and the height of the manhole cover can be adjusted by adjusting the distance between the upper and lower wellheads. manhole cover. (2) Background technology [0002] The structure of the manhole cover that is put into use now is basically composed of the manhole cover and the wellhead. However, due to this type of well structure, the positional relationship between the well cover and the wellhead is fixed, and the height of the well cover cannot be adjusted. Although road surface construction can basically guarantee its flatness now, road construction defects are inevitable, and sometimes the height difference between the upper surface of the manhole cover and the road surface will be relatively large. The existence of this heigh...

AI Technical Summary

Problems solved by technology

The main thing, this simple replacement is bound to increase the production volume of different specifications of the component, increasing unnecessary costs

In addition, because the adjustment bracket is only in contact with the lower fine-tuning screw, but not fastened, when the fine-tuning goes up, it can be adjusted by relying on the thrust of the screw pair, but if it goes down, the friction between the adjustment bracket and the surface sealing concrete is very large , the fine-tuning screw will not bring the adjustment bracket down. In this case, it can only be realized by manually knocking down the adjustment bracket. Very cumbersome and will inevitably make work less efficient

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