Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A device and a method for measuring torques of elevators

A technology of elevator braking and braking device, which is used in measuring devices, force/torque/work measuring instruments, transportation and packaging, etc., and can solve problems such as inability to obtain measurement accuracy.

Active Publication Date: 2009-03-04
MITSUBISHI ELECTRIC BUILDING TECH SERVICE CO LTD
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, due to errors in the calculation of the inertia of the movable part and the fact that the braking torque is assumed to be constant during the braking action period, it is sometimes impossible to obtain sufficient measurement accuracy in this method.

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
  • A device and a method for measuring torques of elevators
  • A device and a method for measuring torques of elevators

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Embodiments of the present invention (hereinafter referred to as embodiments) will be described below with reference to the drawings. figure 1 It is a schematic configuration diagram showing the elevator 10 of the present embodiment. A box 12 carrying occupants or a load is suspended below hoist lines 14 . Lifting cable 14 stretches out from an end that is fixed on the building component above the casing, wraps around the suspension wheel 16 that is fixed on the casing 12, and then stretches to the drive pulley 18 that is arranged on the top of the hoistway. Go around on the drive pulley 18 and the deflector wheel 20 of the hoist and extend to the counterweight 22 again. On the pulley 24 fixed on the upper part of the balance weight 22, after the hoisting rope 14 is wound over the pulley 24, one end thereof is fixed on the building member. Like this, one end of hoisting rope is fixed on the member of building, also can adopt the suspension cable method other than 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

A method and an apparatus for measuring brake torque of an elevator are provided to accurately measure the torque of a brake of an elevator by uniformly maintaining the brake torque. An unbalance torque for rotating a driving pulley(18) by a weight difference between an elevator car(12) and a weight(22) is calculated based on the specifications of the elevator. A motor(26) is driven at a constant speed in a stat in which brake pads(30,32) of the elevator(10) make contact with a brake wheel(28). The output torque of the motor(26) is detected and a brake torque is calculated from the detected torque and the unbalance torque. The elevator(10) operates at a low speed. An apparatus for measuring the brake torque generated by the brake of the elevator(10) includes an unbalance torque acquisition unit for acquiring the unbalance torque.

Description

technical field [0001] The invention relates to the determination of the braking torque produced by a braking device installed on an elevator. Background technique [0002] In an elevator, a braking device is installed to automatically stop the rotation caused by the inertia of the motor of its hoist. Known this braking device comprises the braking wheel that is fixed on the motor output shaft, and contacts with braking wheel. Structures such as brake pads that create resistance due to friction. When the electric power is not supplied to the motor, the brake pad is in contact with the brake wheel due to an abutting mechanism such as a spring, and when power is supplied, the brake pad is separated from the brake wheel due to the abutting force resisting the abutting mechanism. In recent years, brake devices using disc brakes, in which case the brake discs correspond to brake wheels, are being used. [0003] The braking torque generated by the braking device, in addition to...

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
IPC IPC(8): G01L5/28B66B1/32B66B5/00
CPCB66B1/32B66B5/0087G01L5/28
Inventor 高木敦史
Owner MITSUBISHI ELECTRIC BUILDING TECH SERVICE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com