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Manhole cover and assembly method thereof

An assembly method and manhole cover technology, applied in underwater structures, buildings, infrastructure engineering, etc., can solve the problems of low strength and high production cost, achieve high strength, simple assembly, save processing time and production cost Effect

Inactive Publication Date: 2012-11-28
FORT VALE ENG SHANGHAI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects of low structural strength and high production cost of the manhole cover in the prior art, and provide a manhole cover with high strength and convenient assembly process and its assembly method

Method used

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  • Manhole cover and assembly method thereof

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Embodiment Construction

[0014] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.

[0015] Such as figure 1 As shown, the manhole cover of the present invention includes an upper cover 1 , and an annular first flange 11 extending downward is punched and formed on the edge of the upper cover 1 . The manhole cover also includes a lower cover 2 , the edge of the lower cover 2 is stamped to form a downward second flange 21 . The engagement between the second flange 21 and the first flange 11 is an interference fit.

[0016] The assembly method of the manhole cover will be further described below. First, the second flange 21 of the lower cover 2 and the first flange 11 of the upper cover 1 are correspondingly engaged, and then the first flange and the first flange are connected. The junction of the bottom of the second flange is welded and fixed.

[0017] Although the spe...

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PUM

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Abstract

The invention discloses a manhole cover and an assembly method thereof. The manhole cover comprises an upper cover and a lower cover matched with the upper cover; a first turned edge extending downwards is formed on the edge of the upper cover through stamping; a second turned edge is formed on the edge of the lower cover through stamping; and the second turned edge is clamped with the first turned edge. The assembly method for the manhole cover comprises steps of correspondingly clamping the second turned edge of the lower cover and the first turned edge of the upper cover and fixedly welding the joints of the bottoms of the first and second turned edges. The manhole cover has a double-layer cover structure, so the manhole cover has higher strength than a single-layer manhole cover in the prior art, and is easy to assemble to save machining time and production cost.

Description

technical field [0001] The invention relates to a sealing component and an assembly method thereof, in particular to a manhole cover for sealing a manhole structure on a container tank or a tank car and an assembly method thereof. Background technique [0002] The container tank is similar to the tank container, but it does not belong to the container series, but constitutes a special series alone, and its container capacity sometimes exceeds that of the tank container. This type of assembly has two typical representative systems: cement bulk tanks and petroleum and fuel oil tanks. [0003] There are manholes on the container tank to facilitate people to enter the tank for cleaning. There is a manhole cover on the manhole, which is used to close the manhole after charging. [0004] However, the existing manhole cover is a single-layer structure, so the strength is low, the service life is short, and potential safety hazards are likely to exist. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D90/10
Inventor 赵云
Owner FORT VALE ENG SHANGHAI LTD