An anti-buckling safety early warning device for scaffolding engineering using piezoelectric crystals

Abstract

The invention discloses a scaffolding project buckling-preventing safety prewarning device using a piezoelectric crystal. A combined force transmission column is connected with a force transmission bar, the piezoelectric crystal is mounted at two ends of the combined force transmission column, a mounting board is mounted between two insulating pedestals, and a cylindrical covered protective sleeveis mounted at outside of the device; the piezoelectric crystal is connected with a power amplifier mounted on the mounting board through a wire, an output end of the power amplifier is connected witha filter mounted on the mounting board, the output end of the filter is connected with a microprocessor mounted on the mounting board, and the microprocessor further transmits an electric signal to an audible and visible alarm. The device provided by the invention, based on the principle of buckling deformation and piezoelectric effect of a scaffolding steel tube, can monitor deformation situation of the scaffolding steel tube, provides scaffolding steel tube buckling prewarning, and is simple in structure and highly reliable; and the device provided by the invention can be directly mounted on the scaffolding steel tube, is convenient to detach, greatly reduces probability of occurrence of safety accidents, and guarantees life safety of constructors.

Description

technical field [0001] The invention belongs to the field of scaffold engineering, and in particular relates to a scaffold engineering anti-buckling safety early warning device using piezoelectric crystals, which is applied to the scaffold steel pipe yield safety early warning during the use of the scaffold. Background technique [0002] Building construction safety is the top priority in construction production. With the emergence of more and more high-rise buildings, the use of scaffolding is increasing, and safety issues are becoming increasingly prominent. [0003] One of the reasons for the instability and collapse of the scaffold is that the compressed straight rod of the scaffold is unstable due to insufficient strength and excessive load, which leads to the sudden collapse of the scaffold. When the support system exceeds the critical stress of the bar due to the excessive load on the upper part, the support bar is prone to instability and yielding, the balance of the...

AI Technical Summary

Problems solved by technology

[0005] In the past, the installation and disassembly process of the scaffolding safety early warning device was complicated, and the turnover capacity was insufficient, and it was easy to generate false alarms for vibration and impact loads generated during construction and installation activities, resulting in false alarms

[0006] At present, domestic scaffolding safety early warning devices mainly include a scaffold safety early warning system such as the authorized publication number CN106840265A, and a safety early warning system for scaffold settlement observation and settlement measurement such as the authorized publication number CN106705933A and other invention patents. These inventions mainly use lasers, infrared sensors, etc. , to monitor the stress deformation and foundation settlement of the scaffolding. The installation and debugging process is complicated, and it is greatly affected by the dust and temperature environment conditions, and the use conditions are limited. At present, the convenience of installation and disassembly in China is directly monitored for the deformation of the scaffolding steel pipe. And there are not many research and development of devices with strong anti-interference ability, so it is very necessary to propose a scaffolding anti-buckling safety warning device using piezoelectric crystals

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