Cabin Control High Quality Single Girder Exproof Electric Overhead Traveling Crane

Product introduction:

LB type explosion-proof electric single girder crane is improved on the basis of "LD", Ex is an explosion-proof public sign, and explosion-proof bridge cranes are based on GB3836.1-2000 "Explosion-proof electrical equipment for explosive gas atmospheres*** Part: General requirements" and GB3836.2-2000 "Explosion-proof Electrical Equipment for Explosive Gas Atmosphere Part Two: Explosion-proof Type "d"" stipulates that when the motor and electrical appliance are of the explosion-proof type, and the explosion-proof level is ExdⅡCT4, the operating mechanism shall be subjected to spark-proof treatment. The whole machine complies with the requirements of JB/T5897-2006 "Explosion-proof Bridge Crane", and the explosion-proof grades are ExdⅡBT4 and ExdⅡCT4 respectively.

This machine can be used with BCD, BCDS, HB, HBS and other types of electric hoists. It is a medium and small crane that runs on rails. Applicable rated lifting weight 1-20t, applicable span 7.5-31.5m, working environment -20℃- +40℃.

Explosive environments such as: flammable gas, dusty environment, oil refinery, petrochemical plant, gas station, gas station, etc., explosive gas environment under atmospheric conditions, the mixture of gas, steam or mist of combustible substances and air, in After the mixture is ignited, the combustion will spread throughout the environment of the unburned mixture. (Such as: CH4, C2H2, C2H4, NH3 

Technical parameters：

Mechanical Parts:

1.Double welding box girder, beam deflection with DIN/FEM standard

Steel Material: Chinese standard Q235B and Q345B

Trolley rail is made of high strength hot rolled flat steel (16 Mn)

The girder and end beam are connected together by high strength bolts to ensure the structure strength and precision of the whole machine

The end beams are equipped with flat wheel or double rim wheels, anti-friction bearings, buffer blocks and derailment preventing end plate

2. Steel plate cutting adapt whole sets Messer CNC plasma cutting machine from Germany, very fast cutting speed, little deformation, High precision,  Deviation could be controlled within 1mm, it insure the raw material at high quality standard and can reach top level in the industry.

3. The welding of main beam adapt high efficiency and intelligent welding robot, Henan Mine Crane Co.,LTDare No.1 enterprise who adapt this high technology machine. The welding joint inside of the main beam adapt advanced MAG welding, adapt Ar+CO2 mixed protective gas, The 4 welding joint outside of the main beam adapt automatic submerged-arc fillet welding machine.

4. The welding of main beam adapt radiographic inspection and ultrasonic flaw detection for the welding joint and fillet weld position

5. The welding of end beam adapt double gun gantry submerged arc welding, highly welding quality ensure the stable quality of the crane effectively.

6. Adapt the steel plate rolling drum and wireless steel tube, Henan Mine Crane Co.,LTDhas a set of steel plate rolling drum producing and processing line which is industry-leading level. From pre-bending by 1250t press machine, to Edge rolling by three-roller plate roll, at last the longitudinal joint and circumferential joint of drum are welded by automatic welding center and drum processed by heavy duty CNC horizontal machine tool.

7. The wheel and wheel axle and treating by high efficiency quenching and tempering, it can eliminate the internal stress effectively and ensure the processing precision,

The trolley frame, drum, and bogie frame and related big welding structure are treated by Annealing in the natural gas annealing furnace to ensure the Machining accuracy after welding. Henan Mine Crane Co.,LTDhave car bottom  natural gas annealing furnace, the furnace chamber inside size (length*width*heigh) is 10000mmx4000mmx4000mm, this annealing furnace can satisfy the Stress-Relieving annealing treatment after welding for the trolley frame, drum, bogie frame, balance beam, spreader and all kinds of welding structure on the crane, Only Henan Mine Crane Co.,LTD has this ability in China Crane Hometown.

Safety System:

Overload protection in the event of overload, the hoist unit switches off and only the lowering motion is possible

Long and cross travel limited by means of preliminary and final limit switches or Wireless anti-collision device

Anti-falling protection for the Three-in-One electric motor of trolley and crane prevents from accidental falling

All movements can be switched off by actuating the emergency-off switch at the control station via a main contact

High quality long time bearing polyurethane materials buffer fixed at the end of trolley travelling and crane travelling to prevent over traveling

Safety hook latch used for avoiding the lifted material out off from the hook

Audible and visual alarm device to inform the person stay near by the travelling crane.

Rain Cover for lifting mechanism of outdoor cranes, electric cabinet and driving mechanism

Protective earth conductor is fitted as standard

Voltage lower protection system

Current overload protection system

Design Standrad:

Overhead crane and gantry crane manufacturing and tolerances of rail installation GB/T10183-2005

Crane test specification and procedures GB/T5905-1986

Crane electric control equipment JB/T4315-1997

Important application wire rope GB8918-2006

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,