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Overhead crane

Also known as a 'suspended crane', an overhead crane works very similar to a gantry crane but instead of the whole crane moving, only the hoist / Trolley assembly moves in one direction along one or two fixed beams, often mounted along the side walls or on elevated columns in the assembly area of factory. Some of these cranes can lift very heavy loads.

Hammerhead crane

The "hammerhead", or giant cantilever, crane is a fixed-jib crane consisting of a steel-braced tower on which revolves a large, horizontal, double cantilever; the forward part of this cantilever or jib carries the lifting Trolley, the jib is extended backwards in order to form a support for the machinery and counter-balancing weight. In addition to the motions of lifting and revolving, there is provided a so-called "racking" motion, by which the lifting trolley, with the

Jib crane

of which a horizontal portion called the boom or the jib supports a moveable hoist and is generally attached firmly to a wall or a pillar fixed to the floor. This type of crane consists of a pivoting head and boom assembly which carries a hoist and Trolley unit. The pivoting head is supported either by a floor-mounted mast providing 360 degree boom rotation or by an existing building column which provides 180 degrees of boom rotation.

Bridge Crane

A bridge crane runs on an elevated runway system along the length of a factory and provides three axis of hook motion (X, Y, and Z). The hoist moves the load up and down, the Trolley moves the load right and left, and the bridge of the crane moves the load forward and backward. Both single and double girder overhead traveling bridge crane designs allow very precise hook positioning and gentle load placement. Double girder

Cranes

Development depends on infrastructure and infrastructure on heavy machineries. Of all the heavy machines Cranes acquire an important position as they are involved in the building and maintenance of huge projects. Crane machines are the huge tower like machineries having ropes meant to lift or to lower any heavy devices. Hence they are also referred

Bridge Crane

that is designed to build or fix a bridge. It operates on two tracks and has four way horizontal movement. Bridge cranes cover rectangular area and can be floor supported or hung from the ceiling. The main components of bridge cranes are bridge, Trolley, hoist drum, hoist cable, hoist block, hook bumpers, pendant and limit switches. On-off switch is on control pendant for taking emergency steps, in the event of failure of any of the control panels.

Gantry Crane

are generally used for moving heavy loads. They are a common type of portable material handling equipment used in job station or secondary task areas. Gantry cranes are quite similar to overhead cranes except that the bridge which carries Trolley is rigidly supported on two or more legs running on fixed rails.

FAQ About Trolley Crane

  • YGMT Crane types

    • Cranes specification and capacity Ladle Crane : capacity from 50t to 480t Slab Tong Crane: capacity from 25t to 112t Material Charging Crane: capacity from 20t to 110t Magnet Crane Hydropower Station Bridge Crane with single Trolley: capacity from 50t to 1200t,double-trolley capacity from 100t to 500t Hydropower Station Gantry Crane: capacity from 50t to 500t Common Bridge Crane: capacity from 50t to 650t Common Gantry Crane Quenching Crane/Forging Crane:

  • Crane History

    • these tower cranes were usually powered by electric motors when they became widely available. In the United States, cranes were often used in locations far away from residential areas. Cranes tended to be built with the boom connected to a Trolley, which could be moved easily from place to place. These mobile cranes tended to be powered by internal combustion engines. During the 1950s, the availability of stronger steels, combined with an increased demand for taller buildings, led

  • Cranes,overhead traveling crane,Construction cranes,Tower cranes,Mobile cranes,Articulating cranes

    • to remain permanently in one location. These cranes often perform repetitive tasks that can be automated. An important type of industrial crane is the bridge crane. Traveling on tracks attached to two horizontal beams, known as a bridge, a Trolley enables the movement of the bridge crane. Usually, the bridge itself can be moved along a pair of parallel rails, allowing the crane to reach a large, rectangular area. A bridge crane may also be designed so that one end of the bridge is

  • Gantry crane introduce

    • crane. As a result of large-span cranes are mostly used to run the respective drive means to prevent operation of a crane skew have increased resistance, or even an accident. Gantry cranes lifting the car running in the tray, and some lifting Trolley is a boom-type cranes. Bridge on both sides are generally rigid outrigger; span more than 30 meters, the often rigid outrigger side, while the other side of the ball through the hinge and the flexible bridge connecting outrigger, so that the

  • lifting crab of a EOT crane

    • The lifting crab of a EOT crane is an independent two motion machine and consists of the hoist machinery built on to a frame, which is mounted on runner wheels, and driven by a motor through suitable gearing. The crab is also known as Trolley. Various designs of crabs, arranged with C.I. side frames, mild steel side frames are in use. But now a days, preference is given to the built up side frames on which the machinery is mounted.The function of the crab is to provide cross travel

  • Overhead Crane and Bridge Crane

    • box configuration, one major benefit is the lower deadweight with a stronger integrity of the overall system. Onemore advantage will be the hoist so as to lift the objects and the bridge that spans the area covered by the crane, together with aTrolley so as to move along the bridge. Overhead Crane Application Overhead cranes are most generally used within the steel business. The steel is dealt with making use of this particular crane ateach stage of the manufacturing procedure until the

  • Tower-mounted crane

    • a tower-mounted crane moves loads by executing three motions: the hook is raised and lowered by means of a winch and fall, carried in a circular path by the swing gear, and carried in a radial motion by either luffing the jib or rolling a Trolley carriage on its underside. The simplest of tower cranes have only these motions, but more complicated arrangements include mechanisms that allow the base to roll on a track, the crane to change elevation by climbing, or the jib to articulate

  • Single Girder Overhead Cranes and Double Girder Overhead Cranes

    • to 20 tonnes Span Range 3 meters to 30 meters Description of single girder overhead cranes Single girder dual motor cranes provide greater floor coverage than other type cranes. The close crane end approaches coupled with a close Trolley approach hoist give you more working floor coverage This can reduce space requirements in new buildings, or expand your usable space in existing buildings. Adjustable torque magnetic disc/shoe brake for smooth operation. Forged steel crane

  • Crane accessories and auxiliary equipment

    • Power supply line Demag DCL compact conductor line for 4 to 7 poles; connections ensure long-term power supply and minimize unplanned downtime Pre-assembled building blocks for simple assembly or replacement of current collector Trolleys or complete straight sections provide optimum serviceability IP 23 or IP 24 high protection against accidental contact with sealing lip and integral expansion joints for optimum safety Travel unit Maintenance-free drives with anti-friction

  • Material Handling Solutions

    • 6. Versatility YJM makes a complete line of crane systems to meet your individual needs. 7. Safety All cranes are pre-engineered for powered hoist operation-with a factor of 15% of the jib capacity for the combined weight of the hoist and Trolley and an additional factor of 25% of the jib capacity for the impact of powered hoists. 8. If It's Late, We Pay the Freight When delivery is critical, you can depend on YJM. Upon request, we will guarantee your crane will be ready for shipment

  • Introduction of overhead crane operator

    • overhead crane types: Cab-operated Pendant/remote control All overhead (bridge) and gantry cranes that meet the requirements of the ASME B30.2, B30.11, B30.16, and/or B30.17 standards and have powered functions for hoist, bridge, and Trolley are covered by CCO certification exams. Note that the NCCCO Exam Management Committee draws questions from the ASME B30.2 standard for Overhead and Gantry Cranes in an effort to lessen the burden on candidates preparing to take the examination.

  • Self-Raising Tower Crane

    • tower crane QTZ, which is a new-style elevating machinery specially designed for the construction of tall buildings and equipment installation, is a type of self-raising multi-purpose tower crane equipped with level arm support, and it allows Trolley derricking and upper slewing. its jib maximum length is 70m, with maximum lifting load of 12000KG. Main features of the tower crane are given below: ·  TOWER CRANE WITH CE (FOR EUROPEAN MARKET), ISO9000 CERTIFICATE(IN CHINA.) ·  TOP 1

  • Double Girder Gantry Crane

    • [caption id="attachment_69" align="aligncenter" width="544" caption="Double Girder Gantry Crane"][/caption] Gantry crane is similar to an overhead crane except that the bridge for carrying the Trolley or trolleys is rigidly supported on two or

  • Single Girder Overhead Traveling Cranes

    • Single Girder Overhead Traveling Cranes are Modern design Safe operation as per IS 807 / 3177 and Hoist IS 3938 Capacity - 0.5 ton to 20 ton Span - 3Mtrs to 35Mtrs and above Hoist - Ace wire rope Hoist with Motorized Trolley Speed - Single speed or dual speed for Hoisting, Cross travel and long Travel with variable Speeds. If you are interested in our Single Girder Overhead Traveling Cranes, please email to us : sales@bossbuyer.com.

  • Double Girder Overhead Traveling Cranes

    • Design Safe Operation as per IS 807 / 3177 and Hoist as per IS:3938 Economical Capacity - 1 Ton to 30 Ton  above Span - 5 Meters to 30 Meters above Hoist - as per IS  3938 Crab Type Hoist with Motorized Trolley

  • Construction Machinery Types and Applications

    • mixers, concrete mixing plant, concrete pump, concrete mixing truck, concrete jet, concrete vibrators, steel processing machinery. Road construction machinery Such as the flat machine, ballast cleaning machine, etc. Charge Such as the Trolley drill, pneumatic rock drilling machines, electric drilling machines, internal combustion rock drill, and hole drilling machines, etc. Other construction machinery Such as bridge building equipment, pneumatic tools?etc.

  • Bridge and gantry cranes

    • on the crane bridge or remotely from the ground, either through a hard-wired pendant control or radio control. The major components of bridge and gantry cranes are: • the runways • the bridge • the hoist unit • the crab or hoist Trolley used to transverse the load • the winch drum and hoist rope • the rope termination points, the hook and hook block, which may contain one or more sheaves • the braking systems • the ‘crane operating area’ • the electrical supply

  • Question About Tower Crane - 3

    • Jib side ways over track way B. Travel in reverse C. Jib over track facing direction of travel What would stop your crane from running off the end of a track? A. Limit switch B. End of track safeguard C. Sand bags When should your Trolley ropes be tensioned? A. Yearly B. Weekly C. As per operators manual Where would the operator position the trolley to tension it? A. As close as possible to operators cab B. In the middle of working jib C. At the end of the working jib When

  • Crane Component

    • We supply complete component kits for fabrication of economical cranes. BossBuyer crane components allow economic refurbishment of old cranes. Standardized end carriages, standardized wheel bogies, underslung Trolleys, drive units with squirrel cage motors, electric hoists up to 125 t lifting capacity, conductor systems, contactor control panels, radio remote controls, variable frequency speed control equipments, etc. BossBuyer crane components represent

  • BossBuyer Jib Cranes

    • Jib Crane Definition: A cantilevered boom or horizontal beam arm with bearings, hoist and Trolley. This lifting machine may pick up loads in all or part of a circle around the column to which it is attached. Jib cranes can be sturdy enough to lift a ton or more of weight, or small enough to attach to a truck. While people will often

  • Rotary and Rectilinear Cranes

    • with its own boiler or other generator of power, and is self-propelling; usually being capable of both rotary and rectilinear motions. Rotary and Rectilinear Cranes are thus subdivided. Rotary Cranes 1. Swing cranes. - Having rotation, but no Trolley motion. 2. Jib cranes. - Having rotation, and a trolley traveling on the jib. 3. Column cranes. - Identical with the jib-cranes, but rotating around a fixed column (which usually supports a floor above). 4. Pillar cranes. - Having rotation

  • Workstation Jib Cranes

    • BossBuyer Workstation Jib Cranes work best for light capacities yet offer the same benefits as a Freestanding Jib Crane. These lighter jib cranes come with a hoist Trolley and only require a 6" reinforced concrete floor.  Optional portable bases are available to make your workstation cranes portable.  For even lighter capacities, try the affordable Tie Rod Workstation Jib Crane with capabilities up to a

  • Bottom-Slewing Tower Cranes Structure and Configuration

    • on smaller models but are increasingly being seen on larger models, as well. In smaller models, this hollow- section mast is often foldable instead of telescopic. Jib. The lattice-type jib is similar to the main jib (i.e., no counter-jib) and Trolley system of the top-slewing crane; however, it is foldable for fast erection and dismantling and, in many models for a shorter jib work option. Some models feature a telescoping jib. Unlike top-slowing cranes, where the horizontal jib and the luffing

  • Principle of the Crane Anti-Sway device

    • device Without the corrective actions of an experienced operator, returning to a stable state of equilibrium may take several seconds. The swaying of the load only appears during 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

  • Rule about crane brakes and restraints

    • mechanical drive, or other braking means. The brake or drive shall be capable of stopping the bridge within a distance, in feet, equal to 10% of the full load speed in feet per minute when traveling at full speed with full load. (2) A Trolley of a crane shall meet the requirements of subrule (1) of this rule. (3) A crane that is being used out-of-doors shall have a positive mechanical restraint, such as, but not limited to, an automatic rail clamp, to secure the crane against wind

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