• Model NO.：QD
• Main Girder Form：Double Girder
• Type：Ordinary
• Product Name：Double Girder Bridge Crane
• Span：5-40m or on Request
• Application：Workshop Warehouse etc Hoist
• Rated Lifting Moment：60kn
• Rated Loading Capacity：0.5-50ton (on Request)
• Lifting Speed：8,5m Per Minute
• Power Source：Local Actual Condition
• Lifting Mechanism：Electric Winch
• Crane Feature：Easy Operated Girder Crane
• Main Electrical Parts：Delixi Siemens
• Colour：Optional
• Crane Type：Top Running Bridge Crane
• After-Sales Service Provided：Engineers Available to Service Machinery
• Brand Name：Mingdao
• Transport Package：by Container or Bulk Ship Based on Principle of Ke
• Specification：Material Q235B,Q345B
• Trademark：Mingdao Brand
• Origin：China
• HS Code：8426119000
• Production Capacity：1000 Set,Sets Per Year

Mechanism  ItemUnitResultItem    Lifting capacityTon1-500tonWorking grade  A3-A5SpanM5-40mWorking environment temperature°C-25~40Travelling mechanismWorking speedM/min20-75MotorType  YZR160M2PowerKw2*0.82*1.5Rotational speedM/min1380Lifting mechanismLifting speedM/min8/0.8(7/0.7) 3.5(3.5/0.35) 8(7)Lifting heightH(m)6 9 12 18 24 30Travelling speedM/min20 30Working systemA3-A5Power source380V 3pH 50Hz

PRODUCT DETAILS

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♦ This product has two operational methods, ground(pendent controller /remote controller) or operational cabin room. 

Lifting Mechanism	Winch trolley Or double girder hoist
Main Girder/Beam	Double Rigid welded box type Module design Travel speed: Variable Function: Bearing load Material: Q235/345
End Carriages	Rigid welded box type Module design Gear motor &reducer Function: Push crane run forward or reverse Materials: Q235/345
Control	Ground pendent button Radio Remote control Cabin control
Electric parts	Circuit breaker/ AC contactor etc electric parts use Schneider /Siemens/ABB/DELIXI etc famous brand

 1.Double girder Overhead Crane is for lifting 1t~500t goods;
2.It has beautiful box-typed welded main girders. Computer optimized design for main girders with good performance and light weight;
3.Compact structure, light weight and high lifting height;
4.The Max. span reaches 40 meters;
3.It's widely used in workshops, metallurgy, warehouses and assembly shops etc.

Mechanism :(Overhead bridge crane)

1. Double main girders, box-type shaped by wielding;
2. High quality carbon steel Q235B and Q345B;
3. Double girder connected by high strength screws;
4. Welding seams are tested by X-ray and ultrasound;
5. Forged wheels;
6. Compact structure, small volume and light weight trolley;
7. Lifting mechanism is open type winch trolley;
8. Compact reducer motor drive, step less control, hardened gears and safety disc brake;
9. Good operation performance, step less speed regulating and running smoothly;
10. Main girders Shot blasting sa2.5 after welding to release internal stresses;
11. Painting high quality epoxy zinc-rich primer, and the thickness of oil film is 140μm;

Electric System:(Overhead bridge crane)

1. Power supply through step less slide lines;
2. Lifting mechanisms and traveling mechanisms are mutually independent and could travel at the same time;
3. Control panel protection degree is IP54;
4. Reasonable components installation, convenient for check and maintenance;
5. Electric cable is suspended in cable saddle, stationary cable trolley which slides on a galvanized C-type steel;
6. It is customerized brand by customer like Schineider, Siemens, ABB etc.

Safety Devices for overhead crane: 

To guarantee the normal operation of crane and avoid the personal casualty and mechanical damage, the safety device we provide are not only the electric protective devices or alarm bell but also other equipments as following: 

1. Overload Limit Switch
2. Rubber Buffers
3. Electric Protective Devices
4. Emergency Stop System
5. Voltage Lower Protection Function
6. Current Overload Protection System
7. Rail Anchoring
8. Lifting Height Limit Device  


 

FREE SPARE PARTS

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CUSTOMER FEEDBACK

 

Shipping way of MD Cranes: 

♦ Electric parts are packed by high quality plywood crate, to reduce distortion in conveying. 

♦ Main beams, end beams and trolly/winch are packed by plastic woven cloth. It can reduce

Abrasion during the transportation. 

♦ If the size are suitable for container ship, usually by container. 

♦ Big size, usually by bulk ship or by container after truncation. 

♦ Transport ways are based on reducing cost & keep safety. 
                                                                                                                   

              PACKING & DELIVERY

 

                       CUSTOMER VISITING FACTORY



 

ABOUT US

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Shandong Mingdao Heavy Industry Machinery Co., Ltd. is located in Taian City, Shandong Province, China, it is near the China famous Mountain Taish, and also near Kongzi Temple. We are mainly engaged in the design, manufacture, installation and maintenance of single girder cranes(LD Models), Double Girder Cranes (LH, QD etc), gantry cranes(MH, MDG...), Jib cranes(BZ, QZ, MZ etc), variable frequency cranes, Explosion-proof series cranes(LB, QB etc), Cranes with grab bucket, Low headroom monorail Hoist, Electric Winches, scrapers and CD1 MD1 HC Electric Hoist, Hand Chain Hoist, Scissor lift, electric ground trolley etc...

 

CUSTOMER USE CASE

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FAQ

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Q1. Can the cranes be customized?  

 

Yes, every customer's working condition is different, all of our products can be customized depend on customers' requirements. Please give us the information as clear as you can, so we can give our best design to suit for your demands.  

 

Q2. How many operation methods for my selections?  

 

We provide pendent controller with push button control type, remote control type or cabin control type. Please tell us what kind of operation way you need.  

 

Q3. I have low headroom in my workshop, is it possible to install a crane in it?  

 

We have special products for low headroom workshop, our engineer can give the best design according to your dimensions.  

 

Q4. Do you supply lift tools?  

 

Yes, we can provide any kind of lifting tools such as hook, electromagnetic, grab bucket etc... 

 

Q5: In order to offer the most suitable design solution for you, it will be great helpful if you can offer us the following information to us:  

 

1. Lifting capacity.  

 

2. Span length. (rail center to rail center) 

 

3. Lifting height. (hook center to ground) 

 

4. Have you installed the rails? Do you need us to supply the rails? How long is it? 5. Power supply: Voltage.  

 

5. Working condition: What kind of material to lift? Temperature?  

 

6. It would be much better if it is possible for you to offer the drawing photo of your workshop.