TECHNICAL REFERENCE GUIDE POWERED WINDING …
A rope of 6 x 7 fibre core with external abrasion results in the loss of one third of the diameter of the outer wires, which translates into a 30% loss of metallic area (LMA) or a …
Shafts and winding in mines
Each conveyance (Skip, cage or counterweight) in the shaft is protected with multiple over‐wind protection devices: Controller over‐wind protection (Lilly, AEI, Blacks, EMU) is …
Twiflex Braking Technologies on Mine Winder Applications
Twiflex Model VMS3-SPS caliper brakes installed on a 20 ft. diameter doubledrum, single-clutch hoist at a Canadian gold mine. Installed on many mine hoists worldwide, the VMS3- SPS is an improved design from the VMS family, offering an additional 20% braking force. The spring-applied, hydraulically-released brake offers up to 276 kN braking ...
Mining shaft equipment
Zitrón designs, manufactures and supplies the following mine hoist systems: Single drum winder. Double drum winder. Friction hoist multi-rope (koepe) Hoist are fully automated and monitored. They are …
Optimal hoist scheduling of a deep level mine twin rock winder …
The schematic layout in Fig. 1 is of a typical deep level ore transport system of which the most critical component is the rock winder. The blasted rock from the reefs is transported to the shaft area via orepasses, crushers and conveyor belts feeding flasks that weigh off a set payload to be loaded into the skips in which the rock is hoisted to surface …
Mine hoisting in deep shafts in the 1st half of 21st Century
of skip factor from 0,5 to 0,4 result s in a depth gain of about 40 m for Blair winde rs and 50 m for single- rope. winders. The increase of hoisting ca pacity for a …
Safety Considerations For Mine Hoisting Systems
Mine Hoisting Systems. Paper Prepared by: Mr Richard Jackson Managing Director MAMIC Pty Ltd Level 2, 12 Cribb Street P O Box 1625. MILTON QLD 4064. Tel: 07 3858 6900 Fax: 07 3858 6905 Email: [email protected].
Lightweight ropes for lifting applications
Empty Skip Mass Rock Payload The static factor of safety (SF) equation which is dependant on the maximum sus-pended rope length (L) represents the latest technology for the South African mining industry, SANS (2000). The skip factor of 0.7 (f skip) is a typical value for rock skips such as are used with drum winders.
IN-SITU NONDESTRUCTIVE ASSESSMENT OF A WINDER ROPE OF A COAL MINE
Regular NDE inspections provide a powerful tool in monitoring the rate of degradation of a rope. An attempt has been made in this paper to monitor and evaluate the condition of 6X25, RHL, fibre main core (FMC), winder rope of K-4000 Winder of Shaft Mine during three investigations over 13 months at regular intervals.
Mine hoisting in deep shafts in the 1 half of 21 Century
Key words: deep shaft, mine hosting, Blair winder, rope safety factor, drum sizing, skip factor Introduction The mineral deposits are exploited on deeper and deeper levels. In connection with this, definitions like "deep level" and "deep shaft" became more and more popular. These definitions concern the depth where special
Winding rope safety factors used in leading mining countries
In the USA the safety factors vary between 4 and 8 for new ropes and between 3.6 and 6.4 for ropes to be discarded, depending on shaft depth. The highest value of 13 is required by mining regulations in the USSR for multi-rope hoists transporting personnel in shafts up to 600 m deep. In most countries the safety factors are calculated in ...
GAP 502 Discard criteria for mine winder ropes – MHSC
Gap 502 Discard criteria for mine winder ropes Report.pdf. OVERVIEW. The Mine Health and Safety Council is a national public entity (Schedule 3A) established in terms of the Mine Health and Safety Act, No 29 of 1996, as amended... Read More. FRAUD HOTLINE. Stop Fraud, Corruption and Theft CALL 0800005924
Mine Winder Drives in Integrated Copper Complex
Technical Considerations in Mine Winder Drive Selection. Few technical considerations are essential in the selection of winder drive. Usually, the stress is given on the five factors outlined below before selecting a suitable drive after knowing the production target to be achieved. (a) Kinematic calculation for the hoist motor from the basic ...
D. C. drives for winders | SAIEE Journals & Magazine | IEEE …
It is generally accepted that the type of control obtainable with the Ward-Leonard drive is the most suitable for mine winder operation and all developments on other electrical drives for winder have striven to achieve a similar control. There are, however, a number of other factors which affect the decision on the type of drive to use on any particular …
SIMINE® Winder
Market-specific Solutions - A complete electrical solution for mine winders including drive system, power supply, shaft signaling system, as well as our SIMINE® Winder Technology Controller (WTC) for control, safety and automation. The digital speed control and supervision unit meets the Safety Integral Level 3 standard (SIL 3, corresponds to IEC …
TECHNICAL REFERENCE GUIDE POWERED WINDING …
Rope torque factors should be provided and considered wherever there is likelihood of rope torque generation within itself as a result of applied loads during use. This can occur on all winder types. To calculate the torque value for a particular rope size, multiply the nominal rope diameter by the torque factor.
mine winder skip factor
mine winder skip factor. The National Committee PDF file. and an explanation of the Reserve Factor concept are in section 1 Part 1B Since the publication of Part 1 a draft of the design guide prepared by the National Coal Board and SMRE has been issued to the Health and Safety Executive and British suppliers of winding engines and brake gear ...
Parnis Manufacturing gets drum winder order from Canadian gold mine
South Africa's Parnis Manufacturing has a global reputation in manufacturing and refurbishing mine winders and it recently delivered a 23 t, 3 m single drum winder to a gold mining company in Canada. The unit will be used as a man winder and service hoist, and will be used to reach a depth of 2,000 m.
ENGINEERS RESPONSIBILITY-WINDERS
eachidh winder. 16.27.2 The engineer, in addition to recording the results in terms of regulation 16.79, must record and sign the results of th i ti i t f l ti 16271i di t l ithe examination in terms of regulation 16.27.1 immediately in the Driver's Log Book provided in terms of regulation 16.81.
SCIENCE OF MINING MACHINES Recent Developments …
1. DC MINE HOIST DRIVES 1.1. Ward-Leonard Control Method. Ward-Leonard method [4] for winder drive is traditionally very efficient and accurate wide range, speed control method at all operating conditions from no-load to full-load. The speed of the dc motor can be reversed by reversing the excitation of the dc motor.
Mine hoist systems
ABB has the unique capability to design, supply, install and provide long-term service and support of entire mine hoist mechanical and electrical systems. We supply friction hoists as well as drum hoists of various types. We also supply the shaft equipment necessary for productive hoisting processes. ABB mine hoist solutions provide low life ...
Minerals industry safety handbook
Guide ropes and rubbing ropes should conform to AS 3785.6 Underground Mining–Shaft Equipment: Part 6 Guides and Rubbing Ropes for Conveyances, and be of locked coil or round rod construction, unless it can be shown that the rope has the required …
ABB launches next-generation mine hoist control system
New ABB Ability™ NGX Hoist Control can adapt to any hoist and replace older and third-party systems, offering more flexibility than ever. The launch comes 130 years after ABB's first electrical motor for a mine hoist was commissioned in Sweden in 1891. ABB announces the launch of ABB Ability™ NGX Hoist Control, a global control …
completion in Mufulira
Home Zambia's Mines Y ... Perhaps the most awe-inspiring sight at Mufulira Deeps is the winder house, which houses the massive winder drums and cables that hoist both the miners and the copper ore from underground. The two drums are 5.7 metres in diameter, three times the height of the average huma n being; the steel rope that ...
Sinking equipment. Double-drum mine winders
Double-drum mine winders. DOUBLE-DRUM MINE WINDERS WITH GEARLESS DRIVES Technical characteristics Type of mine winder D, mm B, mm n of rope layers Р st, kN no more than Р, kN no more than V, m/s no more than Weight, t 2Ц-5х2,4 5000 2400 1 280 210 14 118 2Ц-5х2,4Д 5000 2400 2 280 210 14 130
Part 5: Winder control systems
Winder control systems should have facilities that enable the calling and sending of a conveyance. The location of these facilities is dependent on the operational …
TWIFLEX BRAKING TECHNOLOGIES PROVIDE RELIABLE …
ADVANCED MINE WINDER BRAKING TECHNOLOGIES Twiflex mine winder disc brakes are designed to statically hold twice the weight of the cables and fully loaded skip or crew cage at the bottom of the mine shaft. They provide enough braking torque to deal with the static out-of-balance load, in addition to the dynamic stopping duty requirements.
Product datasheet Mine Shaft Skips
Mine Shaft Skips offering the perfect fit Whether rope-guided or guided on wood or steel, single-rope drum hoist application, multi-rope Koepe hoist – or whatever your unique …
Design of a Hoisting System for a Small Scale Mine☆
Keywords: Hoist, small scale mine, design, cost, rope, winder, electric motor 1. Introduction With mining increasingly becoming a main contributor to economy, it has become necessary to improve mining so as to harvest greater benefits. In many small scale mines, productivity hence economic growth is being hampered by * …