Single Beam eot 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.Single welding box girder, beam deflection with DIN/FEM standard

Steel Material: Chinese standard Q235B,Q345B,Q355E

Manual brush painting,One alkyd iron red primer painting, two alkyd orange enamel finish painting

Epoxy zinc-rich primer painting for one bottoms and two sides of 120μm thick, to achieve a long lifespan, beautiful appearance and good luster.

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 plate.

2.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.

3.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.

4.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.

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

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

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

The basic parameter of this crane parts is as following: