SCADA/HMI


Testing of mine shaft ropes

Feb 2000 SCADA/HMI

With the continuous loss of lives in mines more stringent regulations have been implemented to ensure the safety of mine equipment. One of the existing mining regulations requires that ropes used in mineshafts must be tested for minimum breaking strength every six months. Either Lifting Services Mining Services or the CSIR can do the test. Lifting Services Mining Services has commissioned TLC Software to develop a software engineering solution to facilitate its testing process.

These ropes are manufactured according to set standards and each rope is issued with a certificate number and a coil number for identification.

Engineer Pierre Theron at TLC explains how the tensile test program is used during the test: "The end caps of the rope are put into a machine that stretches the rope until it breaks.

"The tensile test program does realtime plotting of the load/force and elongation of the rope being tested. Realtime plotting is initiated at a predefined load to eliminate rope slack. After break detection, the software stops acquisition.

"The user is then able to select an endpoint on the graph to determine the maximum load carried and the total elongation at fracture. Curve shifting is performed to correct the offset caused by initial rope slack. The strain energy, plastic fraction of energy, plastic fraction of elongation, and slope of the graph in the linear region is then calculated." After a test, a certificate with a unique number is issued for the specific test, and the above results are stored into a database. If a piece of the same rope is tested at a later stage, a new certificate number is issued under the old coil number. Different test results/certificate numbers of the same rope/coil number can then be compared which enables LSMS to determine the life span of a rope and to advise a mine when to replace a rope.

Previously, LSMS performed the test by feeding the load and elongation signals into a specialised photoplotter which had a mechanical arm connected to a pen that drew the graph on paper according to signals received.

TLC Software

(011) 463 3860





Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

New HMI panel PC series
Vepac Electronics SCADA/HMI
Industrial computing giant, AAEON has released its OMNI-ADN series, a four-model collection of modular HMI panel PCs, with display sizes ranging from 26 to 55 cm.

Read more...
HMI with maximum performance in the smallest of spaces
ifm - South Africa SCADA/HMI
Whenever clear communication, precision and performance in the smallest of spaces are required, the most compact member of ifm’s ecomatDisplay family is the perfect choice. The 11 cm HMI makes no compromises when it comes to human-machine interaction.

Read more...
Reduced machine downtime with advanced machine solutions
Omron Electronics SCADA/HMI
Omron’s advanced machine solutions provide groundbreaking technology that not only minimises downtime but also reduces service costs and ensures uninterrupted operation.

Read more...
Scale your operations control as you need
SCADA/HMI
Modern industrial operations, from a single machine to enterprise-wide systems, demand software which adapts to the task at hand while boosting efficiency,

Read more...
Maximum display performance in the smallest of spaces
ifm - South Africa SCADA/HMI
Whenever efficient communication, precision and performance in the smallest of spaces are required, the most compact member of the ecomatDisplay family is the perfect choice. This is a programmable, high-performance HMI display designed for mobile machines and installations.

Read more...
The new programmable graphic display for all industries
ifm - South Africa SCADA/HMI
The new 11 cm ecomatDisplay from ifm features 16,7 million colours, a high-resolution display with optical bonding and a powerful processor, all packed into a compact, robust housing.

Read more...
Display systems for mobile machines
ifm - South Africa SCADA/HMI
The new 11 cm ecomatDisplay from ifm features 16,7 million colours, a high-resolution display with optical bonding and a powerful processor, all packed into a compact, robust housing.

Read more...
AAEON launches new panel PC series
Vepac Electronics SCADA/HMI
AAEON has released the OMNI-ADN series, a four-model collection of modular HMI panel PCs with display sizes ranging from 26 to 55 cm. The OMNI-ADN series is the first of AAEON’s HMI panel PC range powered by the Intel Processor N-series platform,

Read more...
Common automation panel for drill rigs
SCADA/HMI
Epiroc has announced the full availability of its common automation panel (CAP) for the RCS-based surface drill rig models, Pit Viper and SmartROC.

Read more...
Smart HMI with outstanding features
Vepac Electronics SCADA/HMI
The cMT X-Series from Vepac Electronics offers smart HMI, with a focus on software features for data integration, monitoring, and cloud connectivity.

Read more...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved