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

Pulley for an elevator with a friction reducing coating and method for manufacturing same

An anti-friction coating, pulley technology, applied in the manufacture of pulleys for elevators, in the field of elevators, which can solve problems such as shortened service intervals, improper guidance or misalignment of suspended traction members

Active Publication Date: 2018-10-23
INVENTIO AG
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, it has been observed that when conventional pulleys are used for elevators, problems may occur during prolonged operation of the elevator such that repeated monitoring and / or shortened service intervals may be required
In particular, problems have been observed with respect to improper guidance or misalignment of suspended traction members displaced along the circumferential surface of the pulley, and / or with regard to the life of the pulley

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
  • Pulley for an elevator with a friction reducing coating and method for manufacturing same
  • Pulley for an elevator with a friction reducing coating and method for manufacturing same
  • Pulley for an elevator with a friction reducing coating and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] figure 1 The basic components of the elevator 1 are shown. The elevator 1 comprises a car 3 and a counterweight 5 . Both the car 3 and the counterweight 5 are supported by suspended traction members 7, which are typically formed from a plurality of elongated strips. Each strip includes a plurality of load-bearing wires encapsulated in a polyurethane covering. The suspended traction member 7 can be driven by a drive motor 9 , wherein an electric motor can rotate the traction wheels 11 . The suspension traction member 7 supports the car 3 and the counterweight 5 via pulleys 13, 15, respectively. The pulleys 13, 15 may be fixed eg to the top and / or bottom of the car 3 and / or counterweight 5, respectively.

[0055] In the following structure of the elevator 1: the traction sheave 11 will actively displace the suspension traction member 7, that is, the traction sheave 11 is actively driven to rotate, and then should be contacted by the contact surface of the traction she...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
surface roughnessaaaaaaaaaa
microhardnessaaaaaaaaaa
Login to View More

Abstract

A pulley (15) for an elevator (1) is proposed. The pulley (15) comprises a base body (17) made e.g. from steel and having a rotation-symmetrical circumferential surface (23). Additionally, a frictionreducing coating (21) is applied to the circumferential surface (23) of the base body (17). Due to the friction reducing coating (21) and, optionally, due to additionally smoothing the base body's (17) circumferential surface (23) before depositing the coating (21), a very low friction between an outside surface (39) of the pulley (15) and a contacting surface of a suspension traction member may be obtained. Thereby, guiding characteristics of the pulley (15) may be improved and / or alignment requirements upon installation of the pulley (15) may be relaxed. Preferably, the coating (21) may comprise diamond- like carbon (DLC) or chromium nitride (CrN) such that the coating (21) may provide for superior wear resistance, slickness, corrosion protection and electrical characteristics.

Description

technical field [0001] The invention relates to a pulley for an elevator and an elevator comprising such a pulley. Furthermore, the invention relates to a method for manufacturing a pulley for an elevator. Background technique [0002] Elevators are generally suitable for transporting people or goods in a vertical direction. Typically, an elevator includes a car for housing people or goods. The car is typically supported by a suspended traction member (sometimes referred to as a suspended traction medium - STM), such as one or more ropes or belts. The suspended traction member may be driven by a drive machine, typically comprising a traction sheave driven by an electric motor. A counterweight may be provided and may be suspended to the same suspension traction member used to suspend the car above. The car and / or counterweight may be supported by suspended traction members via one or more pulleys. For this purpose, the pulley has a rotationally symmetrical circumferentia...

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): B66B15/02
CPCB66B15/02C01B32/05C10N2010/06C01B21/062C23C16/0254C23C16/27C23C16/34C23C16/50
Inventor 沃尔克·扎普夫萨沙·赫塞尔
Owner INVENTIO AG
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