An adjustable outer square inner circular manhole cover and its installation and adjustment method
An adjustable and circular technology, which is applied in the municipal field, can solve the problems of complicated adjustment methods, failure to solve the construction quality problems of joints, and inability to adjust, etc., and achieve the effects of reducing the weight of manhole covers, saving materials, and convenient operation
Active Publication Date: 2020-01-31
CHINA UNIV OF MINING & TECH
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Problems solved by technology
For example, the published patent application "An Anti-Settlement Adjustable Manhole Cover" (CN2014106782479), but the form of the manhole cover is still circular, which does not solve the problem of joint construction quality, and the adjustment method is relatively complicated
Patent application "A waterproof, deodorant, anti-theft airtight manhole cover" (CN2563192Y) is square on the outside and round on the inside, but it cannot be adjusted, and its base is a whole
Method used
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Embodiment 1
[0018] as attached Figure 1-3 Shown in is a specific embodiment of the adjustable outer square inner circular manhole cover in the present invention, which includes an upper outer square inner circular manhole cover 1, a lower independent load-bearing module 3 and a connection support between the two Adjusting bolts 2; wherein, the outer and inner circular manhole cover is made of cast iron, and the middle is a circular movable cover 1.1, the diameter of the circular movable cover corresponds to the lower circular wellway 4, and the outer and inner circular manhole cover There are reserved through holes 1.2 at the four corners; there are four independent load-bearing modules, which are distributed at the four corners of the outer and inner circular manhole covers and are smaller in size than the upper manhole cover. The load-bearing parts of the independent load-bearing modules are located at the road base 5. There is a reserved screw hole 3.1, and the upper part of the reser...
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The invention relates to an adjustable well lid with the outer portion being square and the inner portion being round and a mounting and adjusting method of the adjustable well lid. The adjustable well lid comprises a well lid body with the outer portion being square and the inner portion being round on the upper portion, independent load bearing modules on the lower portion and adjusting bolts connected and supported between the well lid body with the outer portion being square and the inner portion being round on the upper portion and the independent load bearing modules. The number of the independent load bearing modules is four, and load bearing portions are located on a roadbase. Each adjusting bolt is composed of a bolt rod on the lower portion, an integrated nut in the middle and anunthreaded rod on the upper portion. The bolt rods are in threaded connection with reserved screw holes in the load bearing modules. The diameter of each integrated nut is larger than the aperture ofa corresponding reserved through hole in the well lid body, so that the well lid body with the outer portion being square and the inner portion being round on the upper portion is flushed with the roadbase. The unthreaded rods penetrate through the reserved through holes of the well lid body with the outer portion being square and the inner portion being round, and a clamping opening is formed inthe end face of each unthreaded rod. According to the adjustable well lid, various possibilities that problems appear in the stages of construction, use and maintenance are avoided, meanwhile, operation is convenient and economical, and daily roads are safe to use and comfortable.
Description
technical field [0001] The invention relates to the field of municipal administration, in particular to an adjustable outer square inner circular manhole cover and an installation and adjustment method thereof. Background technique [0002] There are many inspection wells on urban roads, including different types of sewage, rainwater, tap water, communication, electricity, heating, gas, etc. During use, it will be found that the entrance of the inspection well often subsides, and the surrounding roads are easily damaged, causing serious noise and potential safety hazards. There are two main reasons for these problems: one is that the manhole covers and bases of these inspection wells are generally circular, but the circular manhole covers and the surrounding road surface of the inspection well are in arc-shaped contact, and the road surface cannot be rolled by machinery during construction. Manual tamping caused the road surface near the junction to be not dense, and the co...
Claims
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IPC IPC(8): E02D29/14
CPCE02D29/14E02D29/1454
Inventor 张欣烁张军杰
Owner CHINA UNIV OF MINING & TECH