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Loader crane

A loader Crane (also called a knuckle-boom crane or articulating crane ) is a hydraulically-powered articulated arm fitted to a truck or trailer, and is used for loading/unloading the vehicle. The numerous jointed sections can be folded into a small space when

Bulk-handling crane

Bulk-handling cranes are designed from the outset to carry a shell grab or bucket, rather than using a hook and a sling. They are used for bulk cargoes, such as coal, Minerals, scrap metal etc.

Truck mounted crane

beyond that provided by the outriggers. Loads suspended directly aft are the most stable, since most of the weight of the crane acts as a counterweight. Factory-calculated charts (or electronic safeguards) are used by crane operators to deterMine the maximum safe loads for stationary (outriggered) work as well as (on-rubber) loads and travelling speeds.

FAQ About Mine Crane

  • Testing and Examination of Cranes and Certain Lifting Appliances

    • for the first time. They must also be tested by a competent person after they have been altered or repaired in such a manner that the strength or stability of the crane may have been changed. After the test, the crane must be thoroughly exaMined by the competent person who must complete a report in the form of a certificate of test. A specimen of the certificate showing the particulars which should be included is shown as form CLA.1. in Appendix I. Tests carried out in the UK on cranes

  • Stability of Cranes and Lifting Appliances

    • showing its position and weight must be attached to the crane. Each removable weight must be marked with its self-weight. Cranes must not be used in weather conditions likely to affect their stability. A competent person must exaMine the anchorage and ballast arrangements as soon as practicable after a crane has been subjected to such weather conditions. A crane is not to be used again until all necessary steps have been taken to ensure its stability. All mobile

  • Overhead Crane Inspection

    • the crack many times can be ground out and re-weld. Before welding on any part of the crane, make sure you have a certified welder and if it is on a structural part of the crane you should get the manufactures procedure. Also, try to deterMine why it cracked in the first place. Is the crane being overloaded or used improperly. 3 .Climbing up a and checking the bridge system is normally not part of the daily inspection. Many of these components can be inspected from the ground as the crane

  • Safe Crane Operations

    • Safe crane operations include:Read and understand the operators manualFollow all placards, warning labels and signs on machineKnow the SWL of the crane and never exceed itDeterMine the weight of the load from accurate sourcesIf an estimate of the load is near the max. capacity of the crane, then use a dynamometer to measure the exact weightUse a loud signal, such as a whistle, horn or bell or verbal warning to alert

  • Coupled Cranes

    • load of a single crane, and a crane of an appropriate capacity for the load is not available. Lifting a load with two cranes is a potentially dangerous operation and requires very careful planning. An accurate calculation must also be made to deterMine the share of the load which is to be taken by each crane. This Regulation is quite specific in the requirements which must be adopted when this type of operation takes place i.e. Advance planning Supervision by a competent person

  • Crane Lifting Operations - Load Not To Exceed Safe Working Load

    • of an automatic safe load indicator are being tested as required by Regulation 11, see page 16.The requirements of this Regulation do not apply to the following lifting appliancesExcavatorsMechanical GrabsGrabs and excavator bucket sizes are deterMined by the capacity of the machine. This naturally limits the load which these machines can carry. The possibility of overturning is not as easily achieved as that on conventional cranes, when the machine is being used as an excavator.

  • Crane Safety and Quality Control

    • tested with a weight to ensure that the crane is able to lift heavy objects without losing stability. Safety ultimately depends on proper use of the crane. Crane operators must be specially trained, must pass specific tests, and must be exaMined for any visual or physical problems. The crane should be inspected each working shift, with a more thorough inspection of the motor and lifting apparatus on a monthly basis. Crane operators must be aware of changes in the environment in order

  • Cranes and hoists operating rules

    • disconnect switch. Ensure that the rated load capacity of a crane's bridge, individual hoist, or any sling or fitting is not exceeded. Know the weight of the object being lifted or use a dynamometer or load cell to deterMine the weight. Check that all controls are in the OFF position before closing the main-line disconnect switch. If spring-loaded reels are provided to lift pendants clear off the work area, ease the pendant up into the stop

  • Mobile Cranes

    • Machinery Directive, a broad-based safety standard-applied to cranes among a wide variety of machines-that demands manufacturers eliminate risks and take into account foreseeable misuse. Though American attitudes have not much changed, the proMinent position of European manufacturers and the need to satisfy the Machinery Directive for sales in the EU gives the more restrained European approach acceptance in many of the world markets. Aided by technology that integrates sensors, software,

  • Tower-mounted crane

    • world a patchwork of the two. The globalized marketplace and rapid diffusion of knowledge in the present century have eroded differences in construction practices worldwide so that the selection of a crane type now is more likely to be deterMined by its suitability to the work than by the country where the work is taking place. At least that is the broad picture; contractors in some localities cling longer to traditional practices than others. Tower cranes are the lifting machines

  • Mobile Crane Ground Support Capacity

    • may be placed and preparing a site accordingly. A second theme of the warnings points is the need to survey a site to evaluate surface and underground conditions before a crane is brought in. In some instances it is not possible to deterMine observationally whether backfill has been prepared adequately to support a crane. Some load testing might be advisable, say by running trucks or heavy equipment across a backfill to see its effect. The crane itself could be used for a self-check

  • Crane Rigging a Load and Crane Overloading

    • Crane Rigging a Load Do the following when rigging a load: DeterMine the weight of the load. Do not guess. Determine the proper size for slings and components. Do not use manila rope for rigging. Make sure that shackle pins and shouldered eye bolts are installed in accordance with the manufacturer's recommendations.

  • Introduction of overhead crane operator

    • test conditions, developing the scoring process, establishing reliability among tests, and creating flexible application and scheduling procedures. In concert with the NCCCO Overhead Crane Task Force, IAI also designed the Practical ExaMiner Accreditation Program whereby NCCCO trains and accredits certified crane operators to administer NCCCO Practical Examinations.

  • Articulating Jib Crane

    • departmental stores and in the food industry, to name a few, articulating jib cranes are excellent equipments for lifting heavy loads in confined and small spaces. However, the articulating jib crane has its share of faults – the most proMinent one being the fact that it is incapable of lifting loads as heavy as the ones that are lifted by the wall mounted or the floor mounted jib cranes. This versatile crane can move loads around corners, reach into machines or doorways, and

  • Crane Steel Structures Test Problems

    • load the car, the brake will cause the beams have a greater bearing rail lateral vibration. Current crane inspection regulations Chengdui Cheng Transverse stiffness of rail no clear standards and corresponding test methods, making the test to deterMine the time of difficulties. No-load tests can be recommended, the amount of 1.1 times the amount of load and load conditions to verify the simple commitment from the rail car brake beam lateral stiffness. 3 crane girder stiffness measurement Distinguishing

  • Crane Control program analysis and comparison

    • In recent years, updating and development of bridge crane in order to improve crane performance as the main indicator, the speed of which the most proMinent crane. The following are several commonly used to speed the program cranes were analyzed and compared. 1. Speed ??rotor resistance (1) cam controller to control the rotor resistance asymmetry of the program used for 5 ~ 10t bridge crane of the

  • Electric Hoist Failure Analysis and Treatment

    • appliances, motor or reducer failures, often accompanied by abnormal noise, the noise level and sound location and cause of the fault do not differ on, repair, we should hear and see more, sound can be characterized by or under the failure to deterMine the issue of sound location, find and repair faults. (1) abnormal noise occurred in the control loop, issued a "hum" noise, usually a fault contactor (AC contactor, such as bad contact, the voltage level does not match the core was stuck, etc.),

  • General requirements of the safe operation of crane drivers

    • First, the officer should carefully shift change, on the hook, wire rope, brakes, security devices, carefully exaMine the reliability, timely reporting of irregularities. Second, the boot operation, should confirm the following in a safe state before the boot: (1) All the controller is placed in zero position; (2) crane and work independent of whether the district

  • Bottom-Slewing Tower Cranes Structure and Configuration

    • opposite the jib. To be most effective, the greatest possible distance between the ballast and the mast would be desired. On the other hand, the smallest possible projection of the rear end of the platform from the footprint of the crane (as deterMined by the undercarriage) is desired to allow crane setup in dose proximity to the building and for increased safety. Newer models, therefore, have a compact platform, compensated for by a high stack of ballasting concrete blocks. Mast. Earning the

  • Classification of Crane Anti-sway devices

    • controller. The principle is that the anti-sway controller calculates an acceleration (a progressive speed profile) that enables the lifting equipment to reach a given movement speed without the load swaying. Since there is no way to deterMine the actual state of the physical system, proper operation requires a zero initial swaying and insignificant external disruptions, such as wind. The installation of an active open loop anti-sway system has an undoubted economic advantage compared

  • Principle of the Crane Anti-Sway device

    • the linear motion of the gantry crane (x movement) or when the trolley moves (y movement). Lifting the load following the z axis does not generate any swaying. The Anti-Sway principle is based on using a load position estimator and deterMines the difference between the perpendicular and the trolley. It will be noted that in this equation the length L incorporates the position of the centre of gravity. The Anti-Sway device uses the following information: the translation speed

  • Active Sway Suppression Techniques of a Gantry Crane System

    • control strategy for sway angle reduction and disturbances rejection. Two feedback control strategies which are Delayed feedback signal and PD-type fuzzy logic controller are developed in this simulation work. Performances of each controller are exaMined in terms of sway angle suppression, disturbances rejection, time response specifications and input force. Finally, a comparative assessment of the impact of each controller on the system performance is presented and discussed. Investigations

  • CRANE OPERATORS AND OPERATIONS QUALIFICATIONS

    • CRANE OPERATORS AND OPERATIONS QUALIFICATIONS (1) An employee selected to operate a crane shall possess all of the following minimum qualifications and be exaMined for the qualifications at least once every 3 years: (a) Have corrected vision that meets the same requirements as vision for a valid Michigan driver's license. Possession of a Michigan driver's license or a doctor's certificate is evidence

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