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Tower crane

Tower Crane is a modern form of balance crane that consist of the same basic parts. Fixed to the ground on a concrete slab, tower cranes often give the best combination of height and lifting capacity and are used in the construction of tall buildings. The

FAQ About Wire Crane

  • Tower Crane Superstructure

    • winch has same model, with independent drive and combination of two pumps for oil supply; disc type constant closed brake; main/auxiliary winch and turntable connected by pin shaft, easy for assembly. Drive motor, counterbalance valve, winch Wire rope imported from Germany, max. line speed 120m/min., with good fine speed performance. Winch also features easy oil replacement, low noise, high efficiency and long service life. Luffing Gear Main/auxiliary winch has built-in speed reducer,

  • Tower Crane Safety Devices

    • height, an over- wound warning lamp on instrument panel lights on, at the same time, load moment limiter stops crane operation. Main/Auxiliary Winch Over-Release Protection Device When access switch in winch drum detects only three turns of Wire rope left on the drum, an over-release warning lamp on instrument panel lights on, at the same time, load moment limiter stops crane operation. Winch Ratchet Locking Device Winch drum has a ratchet locking device, and it must be turned on when

  • Wire rope in crane

    • Wire rope is made of steel wires laid together to form a strand. These strands are laid together to form a rope, usually around a central core of either fiber or wire, as indicated above. IWRC is the abbreviation for independent wire rope core.

  • Safe Crane Operations

    • place the hook directly over the center of gravity or the designated lifting point Use taglines to help maneuver the load Never use taglines to swing the loadBefore hoisting the load, check for loose parts that might shift or fallOn cranes with Wire rope hoist lines, there should never be less than two wraps on lagged (grooved) drums and three wraps on unlaggedWhen lifting near or at capacity, test the brakes after the load is raised a few inchesSuspend and transport loads at a level

  • Raw Materials of manufacture cranes

    • be used in manufacturing. Natural or synthetic rubber is used to make tires for mobile cranes. Certain structural components may be manufactured from various metals such as bronze and aluminum. Electrical components may include copper for Wires and semiconducting elements such as silicon or germanium for electronic circuits. Other materials that may be used include ceramics and strong plastics.

  • The Manufacturing Process Of Crane

    • form the latticed booms of large cranes, may be made by bending sheets of steel and welding the long sides together. They may also be made by piercing steel rods with a rotating steel cone. The cables used to lift weights are made from steel Wires. To make wire, steel is first rolled into a long rod. The rod is then drawn through a series of dies which reduce its diameter to the desired size. Several wires are then twisted together to form cable.Steel arrives at the crane manufacturer

  • Jib crane motions

    • Jib crane have the following motions: Hoisting motion Derricking or luffing motion Slewing motion Long travel motion Hoisting motion: It is used to lift or lower the load. This is usually achieved by steel Wire ropes being affixed to a crane hook or a grab hanging from the outer end of the jib. The rope is applied through some receiving arrangement and controlled and operated by a winch system.Derricking or Luffing motion: It is imparted to the inclined

  • Cranes and hoists operating rules

    • 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 to prevent damaging the Wire. Avoid side pulls. These can cause the hoist rope to slip out of the drum groove, damaging the rope or destabilizing the crane or hoist. To prevent shock loading, avoid sudden stops or starts. Shock loading can occur when a

  • Guy Derrick

    • fitting to which the guys are attached, called a spider. The top pivot itself is called a gudgeon pin. Swinging, or s/ewing, is accomplished by using a large horizontal wheel, called a bull wheel, which is fitted at the bottom of the mast. Wire rope is run around the bull wheel, and winch power is used for swinging. Alternatively, on small derricks, an arm, called a ball pole, can be used to provide leverage for pulling the derrick around manually. Another method, sometimes used on

  • Jacking Towers

    • or may be supported on the inboard tower legs. Slings or lifting bars are attached to the load and run up to a lift beam. The lift beam is fitted to receive the lifting tendons which are typically a bundle of 18-mm- diameter high-strength Wire-rope strands selected to satisfy load weight. The lifting tendons go up to strand jacks mounted on the overhead cross beam (really a pair of beams or trusses). The center-hole strand jacks pull up the tendons stroke by stroke, gripping them

  • Hydraulic Telescoping Gantries

    • try to carry the entire load-the equivalent to a rocking table. In actuality, thosejacking units will tend to carry less than the full load because of the limited hydraulic pressure available and elastic effects, including the stretching of Wire-rope slings. There is no trade association, nor is there a formal industry standard covering, for hydraulic gantry design, manufacture, testing, or use. Therefore, all aspects of these machines are subject to the judgment of manufacturers and

  • Crane accessories and auxiliary equipment

    • for control of the installation. The CAN Bus control system corresponds to safety category 3 to DIN / EN 954. Demag DSE pushbutton control pendant suspended for separate travel on the crane girder Handheld or belly box CAN Bus radios for Wireless control allow operator fl exibility Bottom block Enhanced bottom block design with standard load hook for ease of load connection Rope lead-in guard eliminates the risk of being caught between the rope and sheave Handle recesses

  • Crane Rigging a Load and Crane Overloading

    • the touch but could cut into rigging when under several tons of load. Wood, tire rubber, or other pliable materials may be suitable for padding. Do not use slings, eye bolts, shackles, or hooks that have been cut, welded, or brazed. Install Wire-rope clips with the base only on the live end and the U-bolt only on the dead end. Follow the manufacturer's recommendations for the spacing for each specific wire size. Determine the center of gravity and balance the load before moving it.

  • Single Girder Overhead Traveling Cranes

    • of the features of our 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

  • Industrial Cranes

    • types of cranes are usually mounted in ports, boats, yachts and cargo ships. There are many variations of this type. The deck cranes used in ports are typically bigger and have a longer arm span. The ranges of deck cranes may include cylinder and Wire luffing cranes, gantries, grab cranes and heavy lift cranes. Big cargo ships would require heavy lifter cranes. Sometimes, cranes installed are dependent on the products a cargo ship carries. Yachts however would only need a smaller deck crane

  • Metallurgical cranes on the technical requirements for special work

    • should meet the relevant requirements of the standards; 8. Long-term work in high temperature environment of lifting machinery, electric control device of its protective measures need to be taken; 9. Select occasions for high temperature Wire, and has adequate safety factor; 10. Do not use cast iron pulley; 11. The original crane below the level of A6 (not including the A6), and should reduce the load used, decrease the work should be based on the actual circumstances, but after shedding

  • 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)

  • Customer Order cranes should know a few basic parameters

    • speed: single speed () m / min; double speed () m / min Car speed: single speed () m / min; double speed () m / min Cart speed: single speed () m / min; double speed () m / min Operation control: () cab operation; () cable ground operations; () Wireless remote control Cart speed control mode: () linkage Taiwan; () cam speed; () Cab Type: () open; () closed Cab door Location: Right side of the door (); left open (); after the right door (); left open the door after the () Machine Color:

  • Crane Preventive Maintenance Checklist

    • counterweight warning sign Main Boom: lift cylinder(s) telescoping cylinder(s) hydraulic hoses / tubing & fittings holding device boom sections alignment wear pads equal extension sheaves hoist line dead end Wire rope retainer boom hinge pin boom head section auxilliary boom head structure Manual Section: alignment locking device structure Lattice Boom Extension: boom, extension alignment cords lattices end connections

  • Bridge and gantry cranes

    • mounted to end carriages, capable of travelling along runways and has one or more hoisting mechanisms. Bridge and gantry cranes may be operated from within a cabin mounted 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 •

  • Bottom-Slewing Tower Cranes Structure and Configuration

    • The operator cab is traditionally located at the top of the mast, or the crane can be operated from a control post at the lower part of the mast. Many new models now offer a dimbing cab that can move along the mast for optimal view (Figure 19.17b). Wireless radio remote control of these cranes is now offered on most models. Masts are either lattice (Figure 19.16) or hollow section (Figure 19.17). hollow-section masts used to be common only on smaller models but are increasingly being seen on larger

  • YJCrane Gantry Crane

    • load. 180 degree swivel seat reduces operator fatigue and safety issues by reducing the need for the operator to turn around in his seat while managing a load. Direct Line reeving straight to the hoisting drums prevents premature wear and tear of Wire rope. Superior Paint allows our cranes to maintain their appearance far beyond our closest competitor. Superior painting also buffers the steel from the elements and provides corrosion resistance. POWDER COATED CARBON STEL HYDRAULIC TUBING,

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