Production rail grinding services can be expected on the entire WMATA rail system to include revenue tracks, pocket tracks, interlocking, connector tracks, yard lead tracks and yard loop tracks with restraining rail. Rail is constructed of 115 lbs. head hardened (HH), heat treated (HT), vacuumed treated (VT) and control cooled (CC) running rail.
LORAM is back doing its grinding job on the W-Line! There were actually 2 of those but I only recorded one of them. I see that the dightlights were changed t...
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Rail-grinding equipment may be mounted on a single self-propelled vehicle or on a dedicated rail-grinding train which, when used on an extensive network, may include crew quarters. The grinding wheels, of which there may be more than 100, are set at controlled angles to restore the track to its correct profile.
Dr. Dave and pro player Demetrius Jelatis demonstrate how to take advantage of the rails for more position-play options.Contents:0:00 – Intro0:24 – Back-Cut ...
The state of the art 48 Stone High Speed Open Track Grinder for preventative grinding is fitted with: Computer controlled angular positioning of grinding units with automatic pre-selection of a wide range of grinding patterns according to surface defects and required transvers profiles; Automatic grinding load control
Rail grinding mechanism Control system for rail grinding mechanism Optical rail profile measurement system and transfer to onboard computer. Shall be equipped with systems to measure rail profile at a speed >10kmph and storage of rail profile data for at least 100km. Library of proposed rail profiles for various rail sections and locations.
Rail Grinding and its impact on the wear of Wheels and Rails 3 2 The wheel/rail contact As the outer rail in a curve is situated higher in a curve due to canting, it is called the "high rail". The inner rail is lower than the outer rail and is therefore called the "low rail". The inside of the rail head facing the other rail is called the
Rail Profile Grinding • Control Gage Corner Fatigue – Addresses High Contact Stresses on High Rail Gage Corner – One Point vs Two Point Contact – Reduces Rate of Fatigue Defect Development • Control Gage Face Wear – Enhanced Freight Car Truck Steering – Reduction in Lateral Wheel/Rail Forces and Gage Face Wear ...
The new rail grinding trailer designed for tram networks grinds plain track and turnouts. A power car or road-rail vehicle tows it to the worksite. No staff is required on the rail grinding trailer. It is remotely controlled from the traction unit. In both directions of travel, the ATMO grinds at travelling speeds of up to 30 km/h and blends ...
The new rail grinding trailer designed for tram networks grinds plain track and turnouts. A power car or road-rail vehicle tows it to the worksite. No staff is required on the rail grinding trailer. It is remotely controlled from the traction unit. In both directions of travel, the ATMO grinds at travelling speeds of up to 30 km/h and blends ...
• Rail Grinding is an effective maintenance practice to control the effects of rolling contact fatigue, restore profile and maximize value from the rail asset.
Variables that can affect defect occurrence in rail can be controlled more easily at FAST than in revenue service. These variables include rail lubrication, wheel profiles, and train handling. The objectives of the rail profile grinding test at FAST include evaluating the effect of various grinding practices on rail surface condition,
Rail grinding quality assurance based on profile correction and RCF control. Rail grinding is used by rail infrastructure owners to remove rail corrugations, rolling contact fatigue (RCF) cracks and for re-profiling the rail. In North America, the standard practice is Preventive and Preventive-Gradual grinding strategy which uses high ...
The new rail grinding trailer designed for tram networks grinds plain track and turnouts. A power car or road-rail vehicle tows it to the worksite. No staff is required on the rail grinding trailer. It is remotely controlled from the traction unit. In both directions of travel, the ATMO grinds at travelling speeds of up to 30 km/h and blends ...
Through Harsco Rail's Jupiter II Kit, customers are updating old machines to a fully controlled, modern machine. Jupiter II excels by genuinely distributing application intelligence and processing to the nodes of its control network that completely sidesteps issues of network bandwidth.
Loram LRG Transit Rail Grinder features: Industry-leading 30 hp (22.4 kW) electric motors for the most efficient metal removal, optimizes grind time and reduced cost. Precision grind control to accommodate effective metal removal. Able to deliver on high suface finish and grind performance. High grinding power in a smaller footprint platform ...
The grinding units are computer controlled using settings for the depth of grind and angle of the wheels inputted by the grinding operator. Continuous feedback on the progress of the grind is provided to the operator so adjustments can be made depending on the conditions of the rail head.
This paper focuses on design of controlling system for rail grinding mechanism to realizing constant grinding power. To this end, two controllers are designed to control the subsystems respectively. For the grinding subsystem, PI controller is employed to keep the grinding angular velocity of the motor to be constant.
Rail grinding service providers look to supply precise, efficient and flexible equipment. As technology advances to help find rail defects and compare existing rail profiles to ideal profiles, so to must grinding equipment advance and evolve to provide the proper amount of metal removal, operate efficiently to match traffic density and offer ...
"Rail profile grinding encompasses: 1. Control of gauge face wear and lateral wheel-rail curving forces 2. Control of corrugations 3. Control of rail surface fatigue where improvements in average rail life on the order of 50 to 300+% have been reported." Dr. Allan M. Zarembski, PE, FASME Harsco Rail's suite of planning and quality control
EFFECT OF RAIL GRINDING ON RAIL VIBRATION & GROUNDBORNE NOISE: RESULTS FROM CONTROLLED MEASUREMENTS Ben Lawrence Wilkinson Murray Pty Limited, Sydney, Australia Abstract The Sydney Conservatorium of Music is located close to the City Circle underground rail line, and significant work has
Quick and safe – The HSG-2 is the only grinding train in the world that can machine the rail profile at speeds of up to 80 km/h during normal railway operations and grind turnouts fitted with movable point frogs. Track closures and elaborate preparations are thus now a thing of the past.
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A railroad track rail grinding car having both vertical and horizontal grinding stones, with the horizontal stones being individually positionable to contact selected areas of a rail head profile and with the vertical stones being mounted on a flexible beam that can be bent to adjust the grinding path of the vertical stones. Both vertical and horizontal stones are surrounded with …
UP has since centralized control in an effort to maximize the benefit for the money spent on grinding, lubrication and other programs. While rail grinding or lubrication may have a very attractive ROI on their own, they are battling for funding with tie, rail, turnout, yard rehab and surfacing projects, to name a few.
Britain's Rail Delivery Group has said that around one in 20 train services were cancelled in the past week - up from an average of one in 40 this year. Rail services grind to a halt amid Covid ...
Freight railroads grind for two primary reasons: to maintain or manage rail shape (a fundamental aspect of wheel/rail interaction) and to minimize surface-initiated fatigue cracks that interfere with ultrasonic testing and can ultimately lead to rail defects.
The LRGM 2-12 is a turnout grinding machine for the machining of the rail head. The machine composes two coupled grinding units LRGM 1-6, each with 6 grinding spindles with independent angular adjustment. They are driven by 15 kW frequency controlled electrical motors. The grinding process is monitored automatically.
Rail Profile Grinding • Control Gage Corner Fatigue – Addresses High Contact Stresses on High Rail Gage Corner – One Point vs Two Point Contact – Reduces Rate of Fatigue Defect Development • Control Gage Face Wear
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