A selective alarm based on magnetorheological fluid
A magneto-rheological fluid and alarm technology, applied to alarms, instruments, etc., can solve the problems of alarm installation mechanism, alarm strength, sensitivity, durability, and production cost constraints, and achieve compact structure, high reliability, The effect of cost convenience
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[0008] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0009] In the figure, a selective alarm device based on magnetorheological fluid of the present invention, its internal structure is composed of a flat plate 1, a sealing ring 2, a shaft frame 3, a magnetorheological fluid 4, an electromagnetic coil 5, an isolator 7, Volume compensator 8, delay conversion contact 9, return spring 10, and housing 11 are composed. The casing 11 has two chambers, which are isolated by the isolator 7. The two chambers are respectively provided with an opening. The opening of the upper chamber forms a moving pair with the shaft frame 3. The shaft frame 3 and the sealing ring 2 The upper chamber is sealed, the magnetorheological fluid 4 is filled in this sealed chamber, and the electromagnetic coil 5 is wound on the shaft frame 3; The variable liquid 4 is isolated from the lower chamber, and a volume compensator 8 ...
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