Visual bolt looseness prevention washer turn-over tool and use method thereof

A kind of anti-loose gasket and folding technology, which is applied in the field of installation of reactor pressure vessels in nuclear power plants

Active Publication Date: 2019-01-01
SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: solve the problem of how to realize the turning over of the bolt anti-loosening gasket at the space-limited position

Method used

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  • Visual bolt looseness prevention washer turn-over tool and use method thereof
  • Visual bolt looseness prevention washer turn-over tool and use method thereof
  • Visual bolt looseness prevention washer turn-over tool and use method thereof

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Embodiment Construction

[0027] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

[0028] The invention is a visual bolt anti-loosening washer folding tool, which is in an up-and-down structure in terms of structural composition, and is convenient for assembly and disassembly. Such as Figure 1-Figure 6 As shown, it includes a folding compression rod 4, and the folding compression rod 4 has 3 through holes from top to bottom, respectively assembling the connecting pin 8, the upper pin bolt 7, and the lower pin bolt 5, wherein the lower part is assembled The hole of pin bolt 5 is a vertical strip hole. Cotter pins are all installed on the upper pin bolt 7 and the lower pin bolt 5 . The lower end of the folding pressing rod 4 is connected with the positioning guide head 3, and the positioning guiding head 3 and the folding pressing rod 4 are connected together by the lower pin bolt 5.

[0029] The positioning g...

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PUM

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Abstract

The invention discloses a visual bolt looseness prevention washer turn-over tool comprising a turn-over pressure rod. A locating guide head capable of moving up and down is arranged in the lower end of the turn-over pressure rod. The locating guide head and the turn-over pressure rod are connected through a lower pin bolt. An upper pin bolt is arranged on the turn-over pressure rod and located above the lower pin bolt. The outer side of the turn-over pressure rod is sleeved with a pressure spring. The pressure spring is arranged between the lower pin bolt and the upper pin bolt. The upper endof the turn-over pressure rod and the lower end of heavy hammer sliding rod are fixedly connected. A tray is arranged on the lower portion of the heavy hammer sliding rod. The part, located above thetray, of the outer side of the heavy hammer sliding rod is sleeved with a heavy hammer. The bottom of the turn-over pressure rod is provided with a protrusion. An angle-adjustable camera is fixed to the part, located on the upper portion of the protrusion, of the lower end of the turn-over pressure rod. The visual bolt looseness prevention washer turn-over tool is an assembly, convenient to assemble and disassemble, simple and reliable in structure, low in use cost, free of quick-wear parts, convenient to use and free of maintenance.

Description

technical field [0001] The invention relates to a visual bolt anti-loosening gasket folding tool and a using method thereof, which are used for turning over the bolt anti-loosening gasket and belong to the technical field of installation of nuclear power plant reactor pressure vessels. Background technique [0002] During the installation process of a nuclear power plant, bolts of various specifications and types are equipped with anti-loosening washers or gaskets to prevent the connecting bolts from loosening during long-term service, or falling off under the impact of water flow or vibration, thereby affecting the safety of the nuclear power plant. Safe and stable operation, even lead to unplanned shutdown of nuclear power plants. For example, in a nuclear power plant reactor, the anti-loosening gasket at the bottom connecting bolt of the internal component guide cylinder in the upper part of a nuclear power plant is located at a position about 2 meters lower than the oper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D5/00
CPCB21D5/00
Inventor 魏小宝朱延霆洪学乾彭桂云
Owner SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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