Crane rail damage pdf

Crane rails are made from hard steels, which contain high percentages of carbon and other elements that make welding more difficult. Consequences of failure can include loss of life, damage to. Swp, time running, starts, overloads, temperature, load, brake, etc. It is supported by specific guides on tower cranes, mobile cranes, inspecting and maintaining cranes, and information sheets on. Classification of rails is based on the american railway engineering and maintenance of way association arema specifications governing the manufacture of rails.

Wharf seismic design crane loading the mass of typical jumbo aframe cranes can be ignored for certain wharves and cranes, a timehistory analysis may be necessary large, short duration wheel loads can be ignored localized rail damage may occur the crane may derail. For double girder cranes an optional fulllength service platform along the crane bridge can be supplied, where it is equipped with protective hand railing and toe strips according to applicable laws and standards. Drive horsepower requirements for us short ton cranes. Construction management, cranes failures, occupational accidents. Class ii branch lines small engine burns and corrugation. Pdf alignment of crane rails using a survey network. A shaft which is fixed in the wheel and which rotates on bearings fixed in the end truck.

Bridge and gantry cranes vehicle loading cranes vesselmounted cranes. Guidelines for inspecting overhead crane structures integrated. If obstructions are not removed, they could damage the wheel or cause it to derail. Problem in maintenance of overhead crane rail and method of rail jointing in the rail structure, the rail joint section is the most fragile and most of the rail damage takes place at the rail end. Control devices confirm that hoist motion matches control markings. Supplemental hoisting unit usually of lower load rating and higher speed than the main hoist. Pdf shown in this paper are the results of microstructure testing of. Class iii 140 58 78 21 716 78 122 12 78 115 38 34 112 38 34 100 14 14 90 516 516. The crane support structure consists of the rails, crane rail clips fastening systems and pads. Extend bearing stiffeners the full height of the girder. Display with load indication on hoist, hook, control box or crane. Rail crane rbug safety august2010 49451800 section safety while starting the machine nordco recommends the use of a command position.

Uncertainties and recommendations ports 2004, houston, texas patrick w. Basis of calculation for crane rail wheels din 15 070 fem 1. Sections which are rectangular but which have flanges to form a foot. Whiting overhead cranes serve a variety of industries including steel mills, automotive plants, foundries, fossil fuel plants, metal service centers, refuse facilities, hydroelectric plants and nuclear power plants. Overhead crane and rail maintenance equipment brochures. Damages to rails fastening bolts loosening and failure. Whiting corporation, located near chicago, illinois, is a major manufacturer of heavyduty overhead cranes and railcar maintenance equipment. Practical observations for rail mounted crane interfaces. Guidelines for inspecting overhead crane structures. Box 1470 bessemer, al 35021 1 800 2412260 205 4247245 facebook. Asme 830 standards committee safety standard for cableways, cranes, derricks, hoists, hooks, jacks, and slings the following is the roster of the committee at. Guide to inspecting and maintaining cranes major inspections must be carried out at the end of the crane s design life, as determined. Packaging of crane rail shanghai metal corporation products are packed and labeled according to the regulations and customers requests.

For the purposes of this document, rails include railroad rails, crane rails, guard rails, electrical contact rails, girder rails, and retarder rails. Crane preventive maintenance checklist page 3 of 3 comments. This allows safe access to the hoist and trolley, crane travelling machinery and electric panels for ease of maintenance. Crane electric cubicle built in the hoist mt 2 electronic control and recording status of the hoist and crane. In designing or checking an installation it is our practice to try to. Thus the choice of rail, steel or strength grade and welding process is important in designing a crane. Crane girder design crane girder details proper detailing is the key to good fatigue performance the vast majority of crane girder performance issues occur at the crane girder to column connection. Crane span l kr girder length l ht crane span l kr girder. Free download crane rail damage pdf programs widebackup. Single speed crane this crane employs geared motors specially designed by kito to ensure smooth starts and stops. Dual speed crane this crane is capable of pendant buttoncontrolled speed shift. Best practice of crane support structures design an expert.

The items below should be inspected during a typical preventive maintenance check. If obstructions are not removed, they could damage the. The mass of typical jumbo aframe cranes can be ignored for certain wharves and cranes, a timehistory analysis may be necessary large, short duration wheel loads can be ignored localized rail damage may occur the crane may derail wharf seismic design crane loading. Because the stowage pin is only on one corner per side and only one side per rail, this torques the truck. The size and type of crane rail depends on the size and resulting wheel loads of the rmg crane. In comparison, a crane allows for greater hook height and more efficient use of space. This means that the machine is never running unless someone is at or near the main control panel or remote control boxes. End carriage, geared motor, peripheral equipment kito crane. Overhead cranes, new or old installed, must be tested and certificated qualified, and get the acceptance inspection, before being put into work. We also offer continuous welded rail cwr delivered to the jobsite on our own trains and with.

Pdf the effect of cracks on stress state in crane wheel hard. A shaft which is fixed in the end truck and about which the wheel revolves. Crane rails are typically supplied in 10 or 12 metre lengths but cranes run best on continuously welded rail. Cost effective use of space forklifts can only stack product as high as the mast will elevate. One pair required per crane specify voltage and desired speed. Rails can be measured from a geodetic network established on the ground, but a specific signalization of the points on the rail is needed 4. Tagged crane or hoist check that crane or hoist is not tagged with an outoforder sign. For speeds over 100 fpm do not use single speed control. Under the base of the rail, check for erosion of the girder flange or the wear. Crane inspection and crane testing are necessary and important for crane commissioning and crane acceptance, which is indispensable procedure to check the overhead crane manufacturing and installation quality, and guarantee crane. To prevent injury to personnel or damage to the machine, it is highly recommended to. The crane rail should be continuous along the travel path of the crane s. Motor and control are designed for 230v, 460v or 575v, 3 phase, 60 hertz power supply. Symbol and unit symbol unit description explanation c1 material coefficient values in accordance with table 2 c2 speed coefficient values in accordance with table 3a and 3b c3 operating time coefficient values in accordance with table 4 d1 mm travelling wheel diameter running.

Check for proper restraints and obvious under sizing or improper energy absorption capabilities. Trolley and runway rail check rails and ft i d i ffastening devices for looseness, gaps, misalignment, wear. Photo 1 overhead crane, crane runway girder and crane rail in a steel plant. The rail jointing section is subject to harsh conditions wherein, in addition to the. Failure of the overhead crane runway matec web of conferences. If the barges design data is not available then a qualified person. Foster provides rail sections from 12 lb to 175 lb, typically in lengths of 39 ft, 40 ft, 78 ft and 80 ft, depending on the rail section weight. The view of loosened bolt a and damage to the rail fastening to the beam b. Pdf failure of the overhead crane runway researchgate. However, any track that is used is potentially subject to deterioration and damage and it is prudent to carry out some periodic. Practical observations for rail mounted crane interfaces a pema information paper this information paper provides commentary and practical guidance about the design and design coordination of civil infrastructure for rail mounted cranes. It aims to help reduce problems and costs during installation and operation of rail mounted cranes. Rail sweeps crane bridges must be equipped with rail sweeps to clear the travel path.

The rail sweep, a device located in front of the crane s leading wheels, removes obstructions from the runway. Standard stock lengths 39 standard drilling 4 x 5 x 6 joint bars 92 lbs with hardware standard fasteners. Reference speedcapacityhp selection chart for correct drive hp and ratio. Gantry crane means a crane similar to an overhead crane except that the bridge for carrying the trolley or trolleys is rigidly supported on two or more legs running on fixed rails or other runway. Notice overhead crane safety and inspection requirements.

Pdf the paper reports a failure of the overhead crane runway. Additional checklist items may be required depending on equipment or circumstances. The crane supplier may suggest a rail but if he does not, then as a minimum he should supply the head width of the rail. During operation, observe crane for abnormal performance, unusual wear loose pins, wire rope damage, etc.

Practical structural examination of container handling. Identify the factors that influence, and offer solutions to improve the quality of welding for crane rail repair. Lifespan enhancement of crane rails, runway girders and. This occurs especially when forklifts travel over uneven paths and product must be transported relatively long distances. Floating crane floating cranes are used mainly in bridge building and port construction, but they are also used for occasional loading and unloading of especially heavy or awkward loads on and off ships. The paper illustrates the problems of gantry cranes rail damage in mq series,analyzes the rail damage phenomenon from the factors of tracks and gantry crane. Recommended practices for the welding of rails and related.