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Admiral Mühendislik Makina İnşaat Elektronik Taah. Singing. Ve Tic.Ltd. Sti.

Adres: CEVAT DÜNDAR CAD. 15 9

Tel 1: 0 (312) 385 17-55

Faks: 0 (312) 385 71-88

Email 1: sales@amiral.com.tr

Email 2: info@amiral.com.tr

Email 3: ihsan@amiral.com.tr

Web: http://amiral.com.tr/

Overhead Cranes

Overhead Cranes

The bridge moves on rails laid on beams at height. Thus, the load is moved in three dimensions. It is classified as double girder bridge and single girder bridge.

ADMIRALBridge Beams and Rails
It is manufactured in different shapes such as box beam, I profile beam, lattice mesh beam. The difference between the systems is determined by the place and purpose of application. The rails on the bridge are generally square-section solid profile.

ADMIRALBridge Heads and Wheels
It is usually of the box beam type. In some projects, special sheet metal construction multi-wheel system is applied (in high tonnages). The headers are attached to the bridge beam with bolts. Cast steel wheels are finalized with a special turning process. Different types and sizes of bearings are used in the bearings, depending on the crane type and tonnage.

ADMIRALBridge Movement
The bridge is moved synchronously with the geared electric motors on both heads. In some special cases, movement can be provided with a single motor-reducer on the bridge and a shaft system extending to both heads. Movement can be single speed, double speed or variable speed (inverter system) according to need. Precise speeds are provided by double-speed electric motors or planetary gearboxes. Hydraulic coupling is used in high tonnage systems.

ADMIRALLifting System
The system consisting of electric motor, brake, reducer, coupling, drum and rope is used together in different combinations.
  • Brake system is disc brake in light tonnages, electro-hydraulic brake solvent system is applied in heavy tonnage or other open systems.
  • Steel wire rope is used in the lifting system.
  • Single drum and twin drum systems are applied in the drum.
  • In the rope system, 2/1, 4/1, 8/2 hardware systems are applied. Especially in dam cranes, 8/2 hardware is preferred because it does not allow horizontal movement (walking) of the load during lifting.
  • In some applications, it is preferred that the final gear of the reducer is placed on the drum and the gearbox type is chosen small.
  • There are limit switches that can be adjusted according to the lowest and highest position of the hook in the lifting system.
  • Rope winding drum, steel sheet bending, welding construction manufacturing and grooved turning.

ADMIRALLifting System Trolley and Trolley running System

Welding construction system made of steel profiles and sheets is applied. The trolley wheels are cast steel and are finalized with a special turning process. Different types and sizes of bearings are used in the bearings, depending on the crane type and tonnage.

The trolley is moved with a geared electric motor. The movement can be single speed, double speed or variable speed (inverter system) according to the need.


ADMIRALLoad Hook
  • The load hook is manufactured according to DIN 687.
  • The load hook can rotate freely around its axis and is ball bearing.
  • There is a spring lock mechanism on the load hook that prevents the rope from coming off.
  • Load hooks are made of forged steel.

ADMIRALElectrical System and Control
  • Bridge/car driving and lifting system electricity is transported in different ways according to demand or project needs.
    These;
    • Cornice system with cable car
    • Monorail profile with cable car
    • Wire rope system with cable car
    • Closed busbar system
    • Special cable drum system
  • Electric motors 380 V. 50 Hz. They are short-circuit rotor or ring asynchronous electric motors operating in three-phase network.
  • There are contactor, thermal protector, fuse, phase protection system (emergency stop) in the control circuits, and the main contactor that cuts the main circuit.
  • Suspended button control system can be as follows;
    • Hanging over the car
    • Independent pendant control
    • Controlled from cabin
    • remote control system

ADMIRALGeneral Specifications
  • Steel wire rope reels are cast steel in GS 52 quality and are enclosed in sheet metal to prevent the rope from coming off.
  • Pinion gear wheels C8620, large gear wheels C8640, shafts are made of C1050 quality material and are hardened by cementation or nitriding.
  • Maintenance platforms can be applied on one or both sides of the bridge.
  • Bridge and car movement is restrained by rubber pads. Special buffers with hydraulic damping are used in heavy tonnage systems.
  • In the walkway, there can be square-section full profile rails, as well as special rail profiles with mushroom heads.
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