Single Girder Electric Overhead Bridge Travelling Grab or Grapple or Bucket Crane

Product descriptions:

LZ type electric single girder grab crane is LD model electric single girder overhead crane matched with grab electric hoist trolley,the grab bucket is four rope grab bucket,it is one kind of lifting equipment that is widely used in factories, warehouses and material yards for lifting bulk goods.

LZ type single girder grab crane consists of main beam,end beam,electric hoist trolley,four rope grab bucket, festoon cable and electric control system.

The crane working class is A3, rated lifting capacity is 3t,5t, span 7.5 ~ 28.5m, working environment -20 ℃ ~ +40 ℃, lifting height 6-30m, remote control or pendent control or cabin control. Grab open direction with vertical or parallel to main beam. The crane is  prohibited to be used in the flammable, explosive, corrosive environments.

the single girder grab crane has the advantages of simple structure, easy installation,low cost maintenance, strong universality of accessories, and low price of the whole machine and supporting parts. High performance, long service life.

Mechanical parts:

1.Both sidesof all the steel plate of crane are pretreatedby pretreatment production line,Sand blasting– Primer spray–Primer drying. Eliminate the inner stress of steel plate, increase the adhesive force of the steel structure. Ensure the appearance and anti corrosion quality.

2.Steel plate cutting adapt whole sets laser 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.,LTD has a set of steel plate rolling drum producing and processing line which is industry-leading level. From prebending 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 aretreatedby 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.,Ltd have 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.

8.According to the demand of customer, our crane could be equipped with the high technology anti-swing mechanism which has been apply as the patent of our Henan Mine Crane Co.,Ltdgroup. This is work leading level technology. Henan Mine Crane Co.,Ltdtake the head in achieve the best management, best manufacturing, promote the further enhance for the product quality.

9.Henan Mine Crane Co.,Ltdhas top advanced processing and manufacturing equipment and processing technology in the crane industry all over China, at the same time, Henan Mine Crane Co.,Ltdtake the head in achieve the best and better management, best and better manufacturing, Try the best to ensure the Henan Mine Crane Co.,Ltd product quality and satisfy the demand of customer.

Safe system:

Weight overload protection device

Emergency stop system

Over current Protection, Short-circuit Protection

Phase sequence protection

Zero position protection, No-Voltage protection, convenient and simple operation.

Protective earth conductor is fitted as standard

Voltage lower protection system

Current overload protection system

High protection level IP44,IP54,IP55

Long and cross travel limit switch

Anti-falling protection of trolley and crane prevents from accidental falling

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

Technical parameters:

Company introduction

Henan Mine Crane Co.,Ltd is the largest industrial crane manufacturer in China since 2002.    Main products are Electric hoist/Overhead crane/Gantry crane/Grab crane/Magnet crane/Ladle Lifting crane/Explosion proof crane/Container gantry crane/European type crane and hoist /Electric    Winch,Jib crane,Scissor Lift/Crane components.    We have 4500staffs,1420000m2 workshop area,3500sets of various advanced equipments,yearly sales 100000sets of crane and hoist, ISO,CE etc certifications, cranes are exported to 120countries.