20 ton double girder overhead cranes

overhead crane, Optimazed designing,, smaller wheel load, space saving, Excellent driving properties - details see: https://www.machineto.com/20-ton-double-girder-overhead-cranes-10195557

Feature:Bridge Crane	Condition:New	Application:Plants, warehouses,material stocks	Rated Loading Capacity:20/5t
Max. Lifting Load:20t	Max. Lifting Height:main hook 12m, Aux. hook 14m	Span:10.5-31.5m	Place of Origin:Henan China (Mainland)
Brand Name:CMEC	Model Number:QD20/5T	Certification:ISO9001, CE	Warranty:12 month
After-sales Service Provided:Engineers available to service machinery overseas	working duty:A5,A6	Recommended Rai:QU70	Lifting system:double girder winch trolley

overhead cranes

brief introduction:

1,Mainly composed of bridge, crane traveling mechanism, trolley, electrical equipment, etc. ;

2. three ways to enter to the cab: from side, from end

2,Design and manufactured in accordance with GB/T 14405, General Bridge Crane;

3,Widely applied to loading and moving of normal weight in the fixed crossing space and also can work with various special-purpose hoists in special operations;

4,It is prohibited to use the equipment in the combustible, explosive or corrosives environment.

Feature Description:

Optimazed designing, smaller wheel load, space saving

Max. Safe working load 50t

Flexible solution for all lifting needs

Excellent driving properties, stepless control, smoothly moving

Mechanical feature

Dobule welding box girder, DIN/FEM standard deflection.

Adopt high quality carbon steel, Q235B or Q345B; (similar as Fe37 or Fe52);

Whole length CNC cutting for complete web plate, high deflection accuracy

High quality autometic welding and NDT inspection

Shot-blasting Sa2.5 for complete girder after welding, stress release

Trolley rail is high strength flat steel bar

10.9 class High tension bolts mouting between girder and legs, life time safety connection

high quality paiting, 2x2 with 140μm , beautiful appearance

End girder is matched with rail buffer and rail clearance device, anti-friction bearings

Full-length service platform along the crane bridge is supplied,where it si equippe with protective hand railing and toe strips.

Compacted gearmotor driving, stepless control, hardern gear, safety disck brake

High proection class IP54, F class, 40% ED

Electrification and outfitting

slide wire or C shape slide line conductor power supply.

all hoist and crane movements are independent and an be run at same time.

The control panels are finished to withstand corrosion, IP54

The components are positioned in a maintenance friendly way, and the whole layout provides good protection against accidental contact.

Cables are coded either with numbers, colours or tags for easy identification

The flate cables used for festoons are PVC insulated flexible flat cables rated for 450/750V, specially designed for cranes, hoists.

Festoon cables are suspended on cable saddles, fixed to cable trolleys, running in a galvanised C-track, which is connected to the main girder with bolted or welded support brackets.

Lifting units

Separate trolley structure

Flexible element for lifting beam, no bending forces to the trolley

Asynchronous squirrel cage motor

F class insulation, IP54 pretection

DC Electromagnetic disc brake

Min. two dead rope turns while the hook is in the lowest position.

high tensile steel wire rope. Din standard hook

Safety features

1. Overload protection: If the material is over the capacity, the crane will give a sharp warning for protection itself.

2. Emergency brake: If the operation staff encounters some emergency situation, we could start the emergency brake system to protection the related treasure.

3. Control Method: Room control or remote control to avoid any injure to the operation staff

4. Main lifting motor: with thermal protection and currency protection.

5. Hooks with latch

6. Rubber buffers

7. Protective earthing

8. Crane switch and travel end switch

9. Sub-assemblies characteristic are tested before assembly.

Details parameters

Lifting capacity				T	20/5
Span				m	10.5	13.5	16.5	19.5	22.5	25.5	28.5	31.5
Max. lifting height	Main hook			m	12
	Aux hook			m	14
speed	hoist	main	A5	m/min	7.2
			A6		9.7
		auxiliary			12.7
	Trolley travelling				44.6
	Crane travelling		A5		84.7			87.6
			A6		112.5			101.4
motor	hoisting	main	A5	Model/kw	YZR225M-8/26
			A6		YZR250M1-6/37
		auxiliary			YZR160L-6/13
	Trolley travelling				YZR132M2-6/4
	Crane travelling		A5		YZR160M1-6/6.3			YZR160M2-6/8.5
			A6		YZR160M2-6/7.5			YZR160L-6/11
weight	Trolley		A5	Kg	6927
			A6		7160
	Total weight		A5		19133	20753	22968	27269	29884	34243	38021	41126
			A6		20152	22189	24628	29245	32031	36259	40119	43680
Max. wheel load			A5	KN	162	169	178	191	199	211	222	231
			A6		167	174	183	197	205	218	229	239
Rail recommend					43kg/m
Power supply					3-phase A.C 380V, 50HZ

Packaging Detail:1.Steal structures are packaged by plastic film or woven cloth. 2.Winch trolley is packaged by plastic film or woven cloth 3.Rails are packaged as one set. 4. Eletric parts and other installation parts are packaged in high quality plywood crate.

Delivery Detail:Within 30-50 days