Stirring type piezoelectric elevator alarm device

A technology for alarms and elevators, applied to piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., can solve problems such as broken, and achieve strong environmental adaptability and good power generation effect , high reliability effect

Active Publication Date: 2018-01-09
ZHEJIANG NORMAL UNIVERSITY
View PDF9 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the piezoelectric wafer is a brittle material, it is easily broken due to excessive tensile stress.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Stirring type piezoelectric elevator alarm device
  • Stirring type piezoelectric elevator alarm device
  • Stirring type piezoelectric elevator alarm device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The end of the side wall a1 of the main body a is installed with an end cover b via screws, a rocker a4 is provided outside the side wall a1, ribs a3 are uniformly distributed inside the side wall a1, and one side of the ribs a3 is provided with screws and bead x A flexible plectrum g is installed, the free end of the flexible plectrum g is long in contact with the rib a3, and short in contact with the bead x; the inner side of the upper wall a2 of the main body a is equipped with a circuit board c through screws and gaskets d, and the circuit board c is equipped with an energy conversion processing circuit and a signal transmission system; the upper wall a2 of the main body a is equipped with a rotating shaft j through screws, the right end of the rotating shaft j protrudes from the inner cavity of the main body a through the end cover b, and the right end of the rotating shaft j passes through the end surface The bearing h and the nut f are installed on the base m; the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the technical field of elevators and application of the elevators, and particularly relates to a stirring type piezoelectric elevator alarm device. An end cover is arranged atthe end portion of the side wall of a body. A rocker is arranged at the outer portion of the side wall. Ribbed plates are evenly distributed in the side wall and provided with flexible stirring sheets through screws and pressing strips. The parts, making contact with the ribbed plates, of the free ends of the flexible stirring sheets are long, and the parts, making contact with the pressing strips, of the free ends of the flexible stirring sheets are short. A circuit board is arranged on the inner side of the upper wall of the body and provided with an energy conversion processing circuit anda signal transmitting system. A rotation shaft is arranged on the upper wall of the body, the right end of the rotation shaft stretches out of an inner cavity of the body through the end cover, and the right end of the rotation shaft is arranged on the base through an end face bearing and a nut. The rotation shaft is sleeved with a fixing ring, and the fixing ring is provided with a fixing block.A set of piezoelectric vibrators are arranged on the fixing block, and each piezoelectric vibrator is formed by bonding a substrate and a piezoelectric plate. The substrates are installed close to the fixing block. A base plate of the fixing ring is arranged on the base through screws, balls for positioning are arranged between the base and the end cover and abut against counter bores in the endcover through springs arranged in inner holes of the base.

Description

technical field [0001] The invention belongs to the technical field of elevators and their applications, and in particular relates to a toggle type elevator alarm. Background technique [0002] In recent years, with the advancement of urbanization and the improvement of residents' living standards, elevators have become an indispensable vertical transportation tool in people's production and life. However, with the explosive growth of elevators, the number of elevator accidents remains high. The elevator wireless alarm system can shorten the emergency response time for elevator trapped people accidents, and solve the problem of timely rescue of elevator trapped people. At present, the alarm caller installed in the elevator is not suitable for wiring to power it. Most of its signal transmitters rely on batteries for power supply. Their energy is limited and they need to be replaced frequently, which wastes manpower and material resources and easily causes environmental pollu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/02H02N2/18
Inventor 王淑云林仕杰李熹平
Owner ZHEJIANG NORMAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap