Anti-theft and anti-explosion forced centering disc

Abstract

An anti-theft and anti-explosion forced centering disc comprises a centering disc body, a protective cover and a base, and the centering disc body is arranged on the base. Threads are arranged on theedge of the centering disc, and the protective cover is in threaded fastening connection with the edge of the centering disc; the protective cover is made of 304 stainless steel and is integrally in around cover shape, and the outer surface of the protective cover is smooth; a butt joint part is arranged on the side edge of the protective cover, and the butt joint part is in butt joint with an opening device of an external wrench special for the outside. The thickness of the centering disc is increased, the round-cover-shaped protective cover tightly connected with the centering disc in a threaded mode is arranged, a hidden limiting structure is arranged between the protective cover and the base, and the anti-theft and anti-explosion requirements are met through dual protection of the limiting structure, tight connection of the centering disc and the protective cover. The special external wrench for the actions of the protective cover and the limiting structure adopts a specially-madeunconventional design structure, so that the anti-theft performance is improved; and the central bolt adopts a 16mm national standard and American standard universal threaded screw, so that the applicability is improved.

Description

technical field [0001] The invention relates to the field of forced centering plates, in particular to an anti-theft and explosion-proof forced centering plate. Background technique [0002] The forced centering plate is used in the control measurement, engineering measurement, deformation monitoring and other fields of various construction projects. It is generally poured and buried on the top of the observation pier or the surface of the building, as an installation to connect various observation instruments (such as total stations, theodolites, target etc.) base. The forced centering plate made of 304 stainless steel has been widely used in the displacement monitoring application scenarios of reservoir dams, factory buildings, flood gates, sluices, pump rooms and other buildings. 304 stainless steel is used to reduce the impact of hardness and rust on the alignment accuracy. [0003] In the prior art, there are at least the following deficiencies in the forced centering...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there are at least the following deficiencies in the forced centering disc: on the one hand, the disc is generally protected by a protective cover, but currently it is limited to simply wrapping a protective cover on the outside, which can only meet the requirements of resisting natural erosion. It is easy to be disassembled and cannot meet the requirements of anti-theft, and the plastic and PVC materials used in the prior art are fragile, easily broken, aged, deformed and deteriorated under the impact of external mechanical force, poor explosion-proof performance, and also unable to achieve anti-theft function , the existing materials cannot meet all-weather long-lasting protection, especially under the harsh conditions of large environmental changes, they are prone to aging and cracking; As a result, the connection strength of the forced centering plate installed on the observation pier cannot be guaranteed; on the other hand, there are two thread interfaces of the observation equipment installed on the forced centering plate at present, American Standard and National Standard. The corresponding threaded joints on the centering disk have poor applicability. At the same time, debris is easy to accumulate in the hole, and alignment errors will occur during repeated replacements, which will affect the installation accuracy. On the other hand, the existing forced centering disk is connected by two layers of screws structure, it is difficult to level and center during installation, and the cost of materials and installation is relatively high

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