Rail Mounted 500 Ton Double Girder Gantry Crane A8 Working Duty
Double girder gantry cranes are widely used in the construction of
various types of open space, such as building and bridge
construction site in the back room of precast games. Industrial
equipment installation site of the device stacking, assembling
prefabricated parts venues. Others, such as in railway stations,
docks, yards, and hydropower stations, the shipbuilding industry
also has a wide range of applications.
Double Girder Goliath Crane features
The crane shall be processed and inspected in accordance with GB/
T14406-93 "General Gantry Crane" and GB5905-86 "Crane test
Specification and Procedure", and shall meet the following main
1. The metal structure of the crane shall be made of carbon
structural steel according to GB700 (steel brand Q235 B) and
low-alloy structural steel according to GB1591;
2. The steel of important components shall be treated with surface
spray (shot blasting) before painting to reach sa21/2 as stipulated
in GB8923;The remaining members reach Sa2 or St2 level;
3. The groove of welding seam conforms to the provisions of GB985
and 986, and the appearance of welding seam is free from defects
(such as cracks, holes, solid slag inclusion, non-fusion,
non-penetration, shape defects, etc.);
The butt joint of the main beam and the fillet weld of the leg are
all made by submerged arc automatic welding.
The butt weld of the flange plate and the web in the tensile zone
is 100% non-destructive testing.
Ultrasonic flaw detection shall not be lower than class I specified
in JB1152;Not lower than GB3323 grade II for radiographic
4. The brake wheel for each mechanism of the crane shall be made of
no less than 45 steel as stipulated in GB699 or ZG340~640 steel as
stipulated in GB11352.
The hardness of the surface heat treatment shall be 45~55HRC and
the hardness of the depth of 15~20mm shall be no less than 40HRC.
5. The main accessories of the crane include motor, reducer,
hydraulic brake, reel, pulley block, hook and control electric
appliances, which are supplied by the designated manufacturer of
the crane and conform to relevant standards;
|Speed||Main Hook Lifting||m/min||8.5||7.9||7.2||7.5||7.8||6|
|Aux. Hook Lifting||10.4||10.4||10.5||10.4|
|Traveling of Trolley||43.8||44.5||44.5||41.9||41.9||38.13|
|Traveling of Crane||37.6/40||38/36||38/36||40||40/38||38|
|Power Supply||Three-phase A.C. 380V, 50Hz|
|We can design and manufacture all kinds of non-standard product
according to your requirement|
Questions and Answers
Q. What's the information should I provide when inquiry More
details or drawings, better.
A Lift capacity
C lift height
D power sourceor other specials you give us will be more
Q. How many operating methods for my selection Standard operating
A pendent controller with push buttons .
B remote control with push buttons
C cabin(space capsule seat) control with joystick. Choose any type
as you like.
Q. Can this type work in hazardous environment
A Sure! We can customize for you, acid proof or explosion proof, no
problem for that.
Q. Can you provide the serious lifting tools
A Sure, we can provide any lift tools such as lift sling belt, lift
clamp, grab, magnet or other specials as your requirement!
Q. How can we install the crane
A Our senior engineer can be your side to do the installation guide
service and training. Moreover, our best sales can visit your
Q. Safety device
A Overload limiter, Limit Switch (lifting and traveling), Interlock