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Composition of the hoist system: (1) hydraulic station, (2) depth indicator, (3) roller of the hoist, (4) reducer, (5) motor, and (6) brake. ... abundant functions in the field of mine hoist.
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Quincy Mining Co. for a distance of more than two miles along the lode and a depth of over 9,100 feet on the incline, a vertical depth of more than a mile below the shaft opening. Engineers have made measurements in the Michigan copper district and have found that for every 105 feet of vertical depth the rock temperature goes up one degree ...
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In general there are two types of conveyance. Cages are used to transport labour and materials and skips are used to transport either ore …
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This study aims to solve the problem of named entity recognition of complex mechanical equipment faults, especially the problems of many professional terms, long sentences, fuzzy entity boundaries, entity nesting, and abbreviation ambiguity, in mine hoist fault text. Therefore, this study proposes a named entity recognition method based on …
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Although there are two types of underground coal mines – access via vertical shafts and drift mines (incline shafts), depending on the depth of the coal seam and the surrounding terrain – this article will concentrate on mine hoist applications that are used in mines that have vertical access to the coal seam: i.e., the mine hoists that ...
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SYNOPSIS. Ensuring that all the head ropes on a multi-rope friction winder share the load equally has been a design and maintenance issue since they were first developed. Accurate machining of the rope grooves is necessary to meet this objective. Early analysis of the change of rope loads for ropes in grooves that are mismatched in depth ...
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(1) A hoist shall be provided with depth indicators that continuously, …
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The Pyhäsalmi Mine hoist is the first in world to use ABB's state-of-the-art synchronous machine drive, ACS 6000SD (see Figs. 4 and 5) to power the mine hoist. The drives in this series cover the power range 3 – 27 MW. An overhung 16-pole 2.5 MW medium-voltage synchronous motor is directly coupled to the mine hoist. Its speed and torque ...
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A coal mine hoisting system includes two parts, one is a constant-length cable system, and the other is a variable-length cable system. In this paper, the nonlinear dynamic modeling of a coal mine ...
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Perfect monitoring and protection functions such as brake shoe wear and spring fatigue; 6. There are two types of joystick: integrated signal lamp, reliable electrical instrument and new integrated operator. Handle, and a digital depth indicator and digital and screw depth indicator as one of the depth indicator system.
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abundant functions in the field of mine hoist. With the rapid development and increasingly fierce competition in the world, the development of disc brake of mine ... Figure 1. Composition of the hoist system: (1) hydraulic station, (2) depth indicator, (3) roller of the hoist, (4) reducer, (5) motor, and (6) brake. Figure 2. Common disc brake ...
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The hoist operates with an unbalanced rope pull of 85,200 pounds at a hoisting speed of 600 feet per minute The hoist is equipped with a dial type minia 173 ture or depth indicator An indicator having glass covered slots cut in it, has printed on the glass the names of the different tracks which lead from the tip 173...
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With the development of mining technology [1], the development depth of the co al mine has exceeded 1500 meters. Ther efore, the safety and reliability of mine hoist is one of the most
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Several accidents have occurred involving mine hoists at both coal and metal/nonmetal mines. One of the accidents that was investigated revealed several faults with the design of the hoist's control system. ... is sometimes used on an overtravel indicator. Contacts from this device are also used in other parts of the mine hoist controls for ...
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ABB mine hoist solutions provide low life cycle cost, high reliability and system availability, short project execution time and a single source of supply for the complete system, including service and spare parts. Our world-renowned engineering resources are always available for feasibility studies and conceptual solutions.
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M13 – depth indicator fail ure . M14 ... The above events inde pendent function or . ... mine hoist accidents, Safety in Coal Mines, 2, 2000, pp. 55-56. [3].
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Mining the useful fault information in the operation of a mine hoist brake system, analyzing the abnormal parts and causes of the equipment, and making accurate early prediction and diagnosis of ...
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Development of mine hoist depth indicator based on PROFIBUS-DP [D]. North China University of Technology, 2006. ... that the complexity of the resulting control circuit is a linear function of the ...
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As the final executor of the braking system of coal mine hoists, the disc brake directly affects the safety and reliability of mine hoists. ... it is necessary to study the application of disc brake with innovative structure and abundant functions in the field of mine hoist. ... depth indicator, (3) roller of the hoist, (4) reducer, (5) motor ...
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ABB mine hoist systems are designed to meet the highest safety and energy efficiency standards for underground mining. This brochure provides an overview of the features and benefits of ABB's hoist solutions, including friction and drum hoists, shaft equipment, control systems and technical services.
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provides guidance to the types of safety functions that should be considered during the design risk assessment and control identification processes to achieve a safe PWS.
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Due to the harsh working environment and various types of faults in mine hoists, the implementation of conventional detection is relatively difficult. In order to improve the maintenance and fault detection efficiency of mine hoist, a portable vibration detection system is designed and applied in this paper, which can judge the type and …
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4.Depth Indicator. The depth indicator is an indicator display device which is used to mark the position of the hoist in the process of lifting. It is a transmission device that changes linearly through gear conversion. 5.Motor Brake. This product is equipped with a planetary gear reducer.
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Parts used to repair hoists shall have properties that will ensure the proper and safe function of the hoist. § 57.19129 Examinations and tests at beginning of shift. Hoistmen shall examine their hoists and shall test overtravel, deadman controls, position indicators, and braking mechanisms at the beginning of each shift.
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Check the hoist depth indicator speed (feet per minute) to determine that the overspeed devices activated the safety catches within their specified range. 5. When brakes are applied with brake car on the slope, do not release the brakes unless the hoist rope is tight or the brake car is held by other means. 6.
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The purpose of this program is to train and re-train mine hoist operators. The training will be in three parts." In Part I the student will learn the basic components and operations of a mine hoist." In Part II the student will learn the specific components of the hoist that he/she is being trained to operate.
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10th June 2022. Font size: - +. Global technology company ABB has introduced its new standardised hoist control system that it says will enable mining companies to achieve maximum performance and ...
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This article was prepared for the Queen's University Mine Design Wiki Page . The following article is regarding the design of underground mine hoisting systems. Mine hoisting systems are comprised of five major components: hoists, conveyances, wire ropes, shafts, and headframes. Each of these components requires extensive design considerations.
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TLDR. The utility model discloses a digital depth indicator control system of a mine hoist that has the advantages of no limitation, small vibration, low noise, visual depth display and the like, and is an ideal control device of the mine hoists mine depth displaying device. Expand. No Paper Link Available. Save to Library.
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Composition of the hoist system: (1) hydraulic station, (2) depth indicator, (3) roller of the hoist, (4) reducer, (5) motor, and (6) brake. Source publication +24 A novel mechanical design...
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