Improved structure for local air leakage caused by uneven stress of manhole door

Abstract

The improved structure comprises a support, a door plate, a sealing ring, a pressing device, a wrench, a first jacking mechanism and a second jacking mechanism, the center of the door plate is connected with the wrench through a hinge, one end of the wrench is connected with the support through a hinge, and the other end of the wrench is provided with the pressing device. The first jacking mechanism comprises a first jacking device and a second jacking mechanism, the first jacking device is arranged on the wrench and forms first force application points distributed on the two sides of the center of the door plate, the second jacking mechanism comprises a rotating body capable of rotating around the center of the door plate, the included angle between the rotating body and the wrench is adjustable, and the rotating body forms second force application points distributed on the two sides of the center of the door plate and adjustable in position. The overall stress position of the manhole door is adjusted through the two sets of jacking mechanisms, the problem that stress on the door plate is not uniform is solved, the manhole door is pressed and sealed, and the sealing performance and the using effect of production equipment and the personal safety of post personnel are guaranteed; the improved structure is simple, convenient to implement and low in cost.

Description

technical field [0001] The invention relates to a manhole door structure, in particular to an improved structure for local air leakage caused by uneven stress on the manhole door. Background technique [0002] At present, most simple manhole doors in China are round or square, and the manhole door is pressed tightly by a pressing device to ensure its airtightness. The recently used circular manhole door is around 200 degrees Celsius, and in a dusty working environment, there will still be partial pressure leakage after the compression device is compressed, which will easily lead to equipment damage and endanger the safety of personnel on the job. Analysis The reason is that when the manhole door cover is pressed, the actual force will shift left and right in the theoretical force center and produce local deformation, making the opposite side of the actual force side pressed unevenly. Therefore, a solution to the local air leakage of the manhole door is proposed. improved st...

AI Technical Summary

Problems solved by technology

The recently used circular manhole door is around 200 degrees Celsius, and in a dusty working environment, there will still be partial pressure leakage after the compression device is compressed, which will easily lead to equipment damage and endanger the safety of personnel on the job. Analysis The reason is that when the manhole door cover is pressed, the actual force will shift left and right in the theoretical force center and produce local deformation, making the opposite side of the actual force side pressed unevenly. Therefore, a solution to the local air leakage of the manhole door is proposed. improved structure of

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