ZZHZ Brand Box Type Ganry Crane
Establisehd in 1992, ZZHZ have rich experience about the crane manufacturer, especially the big ton material lifting crane. What's more, all of our crane are designed and produced according to our clients' requirement, so which kind of crane do you need, pls let us know!
(1)Advantages
One-piece steel plate welded with another makes box-girder gantry crane very stableb. High wind-resistance, high rigidity and low deflection make it very safec. Two trolleys are fixed on the beam ,using winch to lift objects easilyd. Proven, professional technique and good performance make it famous all over the worlde. HUAZHONG use high-quality electronic components which improve the efficiency and safety of the whole machinef. The classical and traditional style has been widely accepted by all people.
(2)working principle
Girder and outrigger parts constitute subject steel structure of the gantry crane which stands on the ground track by two sides outrigger., realizes longitudinal traverse by travelling mechanism and horizontal movement by trolley mechanism, the lifting and lowering of suspended objects by hoisting winch.
(3) structure of the crane
1.main girderbe welded of steel plates, connected by high-strength precision bolt. there are sliding rail for trolley to travel upper the girder which is fixed on outrigger by high-tension precision bolt
2.outriggera. consist of rigid outrigger and flexible outrigger, all connection points are connected by high-tension boltb. the ladder is used by operator to enter into cab or arriving at winchc. when the span>30m,there need a flexible leg aiming at reducing the lateral thrust the trolley has to the rail when the girder load objects
3.travelling mechanismconsist of driving gear box and passive wheel boxa.the driving gear box supplys power to realize the crane's travellingb.what the difference between driving gear box and passive wheel box is that passive wheel box lacks transmission structure such as dynamo, reducer and a pair of exposed gear
4. trolley with hoistbe made up of trolley frame, winch and pulley blocka.trolley frame welded of steel plate is the loading and travelling mechanism of trolley with hoistingb.winch is the lifting mechanism of trolley. when it works, wire rope affects the pulley as rising and falling movement, which makes suspended objects lifting and loweringWarning: wire ropes need to be examined regularly and changed in time if there is a 10% broken wires, loosen wires and wearing down.
5. Cab
a. glass window through which one can watch overall working condition is installed in the front and two sides of the cabb. Electric cabinet as a group of independent cabinet , fixed outside of cab is connected by control cable and linkage station which is set up in the cab6. Electrical systema. lifting motor, crane travelling motor and hydraulic power motor are included. The whole electrical system is controlled by PLC.
b. Two ways to operate the crane: cab operating and remote controlling.c. Electric components are imported from Schneider in Germany7. Platformplatform is installed in order to maintain the crane,the protective guard is added to protect the safety of servicemen.
(5) After-sale service
1.We promise to provide brand-new and quality guaranteed products
2.we promise to provide practical solution to settle the problem the user encounters
3.One year warranty for whole machines.
4.Low charge for continue maintenance when warranty is expired.
5.Exclusive support engineer.
6.We can provide the free training to end-users.
ZZHZ Products:
Gantry Crane, Overhead Crane, Bridge Girder Launcher, Girder Transporter, Concrete Batching Plant, Concrete Mixer and etc.
See more, please visit our website: www.zzhz.com
Business Manager: Amy
Tel: 86-371-68000000
Mobile: 86-13676949605 (Whatsapp)
Skype ID: amy.jones966
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