Magnetically mounted vibration impact transducer

Abstract

A magnetic arranged vibration shook sensor comprises a shell, permanent magnetic steel, a diamagnetism spacer ring, a base, piezoelectricity component and a signal conditioner, wherein, the shell and the base are closely fitted, assembled, and, after welded, combined to form a closed installation space wherein the piezoelectricity component and the signal conditioner are arranged at the upper part, and form a installation space for permanent magnetic steel in the base; the piezoelectricity component consists of an insulation sheet, an upper conducting strip, a lower conducting strip, an upper electroceramics, a lower electroceramics, a positive conducting strip, a negative conducting strip and a quality block, and is connected to the base through screws; the signal conditioner is arranged on a supporting frame of the piezoelectricity component; the diamagnetism spacer ring, the excircle of which is coated with glue, is firstly pressed into the bottom hole of the base made of ferromagnetic material, then the permanent magnetic steel with high parallelism, finish and planeness is pressed into the center hole of the base, a thin layer of spirit glue with high intensity and high hardness is filled coordinately, the inner disk of the diamagnetism spacer ring is provided with a plurality of equally distributed small grooves which are connected with the magnetic steel and the spacer ring hard through glue; meanwhile, various electric sensing circuits are arranged according to requirements in order to form the magnetic arranged vibration shook sensor.

Description

Technical field: [0001] The invention relates to a vibration shock sensor, in particular to a magnetically mounted vibration shock sensor, which belongs to the technical category of equipment fault diagnosis and is mainly used for fault diagnosis that requires long-term reliable detection of parameters such as vibration and shock but cannot be drilled on the machine Where the sensor is installed. Background technique: [0002] In the prior art, there are vibration sensors that use magnets and existing sensors assembled by bolts and then attach the magnets to the steel material of the machine for detection, and there are also detection schemes that directly attach the existing sensors to the machine with quick-drying glue. Its disadvantage is that the scheme of connecting the existing sensor and magnet with a single bolt is prone to loose connection and failure, especially the combined contact surface between the magnet and the sensor is difficult to receive high-frequency vi...

AI Technical Summary

Problems solved by technology

Its disadvantage is that the scheme of connecting the existing sensor and magnet with a single bolt is prone to loose connection and failure, especially the combined contact surface between the magnet and the sensor is difficult to receive high-frequency vibration and shock due to poor contact and tight fit. It is stipulated by traditional regulations that it can only be used to detect low-frequency vibration with small acceleration; while the glued installation method is formed because it is difficult to squeeze out excess glue by applying pressure for a long time after filling the glue between the sensor and the machine and waiting for it to dry. A very thick or even loose rubber isolation layer affects the transmission of vibration shock and long-term reliability. It is also stipulated by traditional regulations that it can only be used for short-term detection of low-frequency vibration with small acceleration.

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