20 Tons Electric Double Beam Explosion Proof Overhead Crane

• After-sales Service: Provide
• Warranty: 1 Year
• Certification: CE, ISO9001, GOST
• Condition: New
• Operation Form: Air Operation+Ground Operation
• Maximum Lifting Height: >40m
• Model NO.: QB
• Maximum Lifting Weight: 20-50t
• Main Girder Form: Double Girder
• Type: Beam
• Overload Protective Device: Included
• Lower Voltage Protection Function: Included
• Emergency Stop Function: Included
• Working Duty: A3~A4
• Speed: Frequency Inverter
• Motor: China or Germany
• Transport Package: Fumigation Wooden Box
• Specification: GB/FEM/DIN
• Trademark: Kuangyuan
• Origin: Henan, China
• HS Code: 84261120
• Production Capacity: 6000 Sets Per Year

Product Description

20 Tons Electric Double Beam Explosion Proof Overhead Crane

Product introduction:
QB Explosion proof double girder girder electric overhead traveling crane, the lifting unit is a hook, It is usually to be used to explosive environment. It mainly consists of lifting trolley,bridge frame,long traveling unit,hook and wire rope,magnet system, cabin and electric control system,etc.
The explosion proof function has special design on crane wheel,hook and wirerope to avoid spark happening,.
It has reasonable structure,light dead weight,low noise,easy operation and maintenance,low maintenance frequency and cost,superior performance,long service life.

QB Explosion proof double girder girder electric overhead traveling crane Normal capacity are 5t,10t,16t,16/3.2t,20/5t,32/5t,50/10t the span is 10.5m-31.5m or more, lifting height 16-20m or more, working class is A3~A4.
Control model: cabin control, remote control and pendant control.



Safety feature: 
1. Overload protection in the event of overload, the hoist unit switches off and only the lowering motion is possible
2. Long and cross travel limited by means of preliminary and final limit switches or infrared anti-collision device
3. Anti-falling protection for the Three-in-One electric motor of trolley and crane prevents from accidental falling
4. All movements can be switched off by actuating the emergency-off switch at the control station via a main contact
5. High quality long time bearing polyurethane materials buffer fixed at the end of trolley travelling and crane travelling to prevent over traveling
6. Safety hook latch used for avoiding the lifted material out off from the hook
7. Audible and visual alarm device to inform the person stay near by the travelling crane
8. Rain Cover for lifting mechanism of outdoor cranes, electric cabinet and driving mechanism
9. Protective earth conductor is fitted as standard
10. Voltage lower protection system
11. Current overload protection system and more (contact with us more details)

Design standard
Crane design standard GB 3811.
General Purpose Overhead Crane design standard GB/T14405
Manufacturing and tolerances of rail installation GB/T10183.
Crane wheel standard:JBT 6392
Crane test specification and procedures GB/T5905.
Crane electric control equipment JB/T4315.
Important application wire rope GB8918.
Carbon structure steel GB/T700.
Low alloy high strength structure steel GB/T1591.
Welding joint radiographic inspection standard JB928.
Steel welding joint manual ultrasonic flaw detection way GB11345.


Installation service

Henan Mine Crane Co.,LTD crane could supply not only overhead crane but also the overhead crane solutions. Firstly, we will supply overhead bridge crane design, overhead crane manual, overhead crane drawing, overhead crane wiring diagram, overhead crane electrical diagram and overhead crane safety video before or after delivery, our technician will do supervision the installation according to the document, of course, the customer can do installation by themselves according to their requirement.
After installation, our technician will indicate to do the load test according to the overhead crane load test procedure, then overhead crane operator training and overhead crane maintenance training, all the procedure will be made according to the overhead crane training videos and overhead crane training PowerPoint.