Rubber Tyre Moving Gantry Crane in Double Girder

• Certification: RoHS, CE, ISO9001
• Condition: New
• Maximum Lifting Weight: >200t
• Maximum Lifting Height: >40m
• Operation Form: Air Operation+Ground Operation
• Type: Shipbuilding Gantry Crane
• Model NO.: RTG5023
• Main Girder Form: Double Girder
• Transport Package: Wooden Package
• Specification: stainless
• Trademark: CNTHHI
• Origin: Wuxi, Jiangsu
• HS Code: 84261930
• Production Capacity: 1500sets/Month

Product Description

Brief introduction of model
This RTG5023 type rubber-tyre gantry crane is widely used loading and unloading containers or packed cargo in the port wharf and freight yards. It is a diesel engine driven alternator as the driving force to move longitudinally along the site, lateral movement of trolley and lifting movement of spreader to work. This machine uses AC frequency control, PLC control, and installed intelligent "state monitoring and control system." It has the characteristics of simple and beautiful appearance, safe and reliable work, advanced performance, convenient maintenance, high durability and so on. It can be widely used in loading and unloading operation of port wharf and freight yards.

Main Technical Parameters

Lifting Power		50t( Under the hook)
Working grade		A6  A7  A8
Span distance/Base distance		23.47m/ 6.9m
Hoisting height		above rail 20m/below rail10 m
Working speed of Mechanism	Hoisting	full load 8m/min  empty load 15m/min
	Trolley travelling	full load 15m/min empty load 30m/min
	Cart traveling	full load 20m/min  empty load 60m/min
Max. working wind speed		20m/s
Installed Capacity		146kw
Non-working max. wind speed		55m/s
Largest wheel pressure at work		12t
Number of traveling wheel		16
Power Supply		380V 50Hz
Crane weight		≈115t

Note:
The above parameters for the performance of the existing cases of mature technical parameters are for reference only. We can design and manufacture products according to user's requirements. There are various derivative models of said crane available for customers to choose.



Sketch Drawing:




Components:

a. Gantry structure
DPT's gantry structure consist of double box main girder, A frame flexible leg, A frame or I frame rigid leg and spring bearing joint. The main girder is common welding structure of High strength low alloy structural steel Q345 with yild strength 345Mpa (refer to GB/T1591-2006). Q345 is widely used in crane structure,for its obvious advantages in ecnomic along such high strength low alloy structural steels.The spring bearing joint connect the main girder and the flexible leg. The main girder can free expand on a neoprene bearing to avoid rail gnawing.
b. Trolley
The trolley consist of trolley structure, hoisting mechanism, trolley travelling mechanism and safety system.Trolley structure is a welding structure of Carbon structural steel Q235 with yield strength 235Mpa or Q345. A limit switch was mounted on the trolley to limit the trolley travel distance. Buffers was mounted on the two end of the trolley to avoid demage when crash occur.
c. Hoisting Mechanism
DPT's Hoisting Mechanism consist of frequency conversion motor,coupling,brake, reducer, drum coupling,drum and wirerope system. The motor commonly used Jamusi's or Dalian's frequency conversion motor.The brake use chinese top brand Jingu or Huawu.The Reducer is hardened gear reducer.The drum use Q345 steel and the diameter ratio is greater than 18. The wirerope use Nantong or Guizhou wirerope with 18x7 structure, and it's tensile strength is 1670Mpa.The Pulley is hot rolled pulley or welding pulley with diameter ratio greater than 20. The hoisting Mechanism has been setted with overload switch and overspeed protection switch.
d. Trolley travel system
DPT's trolley travel system consist of motor, coupling, brake, hollow shaft reducer and bogies.Buffers mounted on the two ends of the trolley. Limit switches are mounted on one side of the trolley to avoid demage.Wheel block is always Right angle bearing box or Split bearing box. The right angle bearing box is the traditional type with widely praised. The split bearing box is advanced design type with advantages of easily assembly and maintenance. The wheel casted and machined with ZG50SiMn. The wheel has double wheel rims. The wheel rim has enough strength to avoid the trolley deviation travel.
e. Gantry travel mechanism
DPT's Gantry travel mechanism consist of bogies and triad reducers.Commonly the driven bogies are half of all bogies. The triad reducer mounted on the driven bogies. On the idle bogie there is mounted Wheel clamp or anti-wind shoes.Optional rail clamps are mounted under sill beam to instead wheel clamp. All these safety devices interlock with anemograph.On the end bogie there is rail clearer to clear blocks unexpected on the rail.There is also mounted rectifying wheel on the end bogie to avoid crook run. A lightning shoe mounted on the end bogie to conduct the lightning power to the earth.

High Reliability:    
The motor and ruducer are imported from domestic famous brands with industry reconnition, quality assurance. It has reliable quality.  The main electrical components is from the selection of Schneider, Siemens, ABB and other international well-known brands, the protection degree electronic control box is less than IP54.

Safety features:

1. Automatic rectify deviation control

2. Weight overload protection device

3. Top quality polyurethane buffer

4. Phase protection

5. Lifting limit switch,cross traveling limit switch,long traveling limit switch

6. Voltage lower protection function

7. Emergency stop system

8. Current overload protection system

9.  Lighting system 

10. Audio and video alarm system

FAQ:

Q1: What's the information should I provide when inquiry?     
A: Thanks for your question. The more information you provide, the more accurate solution we can prepare for you! The information such as the lift capacity, span, lift height, power source or other specials you give us will be more appreciated.        
Q2: Is your products customized?      
A: Yes, because of the different working condition , all our products are customized depending on detail requirement! So if you give us more information about the lift capacity, span, lift height, power source and other specials, we will give you a very quick quote!     
Q3: How can we install the crane?      
A: Our senior engineer can be your side to provide the installation guide service and training. .Moreover, our best sales can visit your country.        
Q4: 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!        
Q5: How about your payment terms?      
A: we accept T/T and L/C at sight.