Assembly and disassembly device for elliptical manhole cover plate of pressure vessel

Abstract

The invention discloses an assembly and disassembly device for an elliptical manhole cover plate of a pressure vessel, which is characterized by comprising a pivoted arm component, a transmission connecting rod, a beam component and a track bracket, wherein the pivoted component comprises a bottom plate and a connecting shaft housing which is vertically fixed on the bottom plate; a pivoted arm isalso fixed on the plane of the bottom plate which is fixedly connected with the shaft housing; a fixing end and a free end of the pivoted arm are respectively articulated with the front end of the transmission connecting rod and the front end of the beam component; the track bracket is sleeved on a beam of the beam component in a sliding mode; and the rear end of the beam component is movably connected with the transmission connecting rod through a shaft housing with a handle and a transmission shaft housing. The invention has the advantages of light weight, material saving, manufacture cost saving, convenient use, time-saving and labor-saving operation, small needed operation space, simple operation process and easy positioning for the installation of the manhole cover plate; and only one person can assembly or disassembly the manhole cover plate and replace a spacer without a dragging system provided by exterior.

Description

Loading and unloading device for oval manhole cover plate of pressure vessel technical field The invention relates to a matching device of a pressure vessel, in particular to a loading and unloading device for an elliptical manhole cover with internal pressure and self-tightening seal of the pressure vessel. Background technique Some pressure vessels, such as high-pressure feedwater heaters with a single-head water chamber structure, due to the small maintenance space inside the water chamber, the manhole cover plate of the water chamber is usually designed as an elliptical manhole structure with internal pressure self-tightening seal. Can be taken out from the water chamber manhole door. Since the pressure in the water chamber is as high as 20-30 MPa, the oval manhole cover is designed to have a thickness of more than 100 millimeters and a weight of more than 100 kilograms. The installation and disassembly of the manhole cover cannot be completed by manpower alone, and a ...

AI Technical Summary

Problems solved by technology

Although this kind of device can realize the loading and unloading of the manhole cover, but the device is heavy and the operation is complicated, and the task of loading and unloading the manhole cover cannot be completed by one person, and an external dragging system such as a manual hoist is required, which requires a large operating space and Multiple people are required to work together to complete the loading and unloading tasks

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