148KW 450t Electric Gantry Crane for Shipbuilding QM 450T - 38M - 28M

148KW 450t Electric Gantry Crane for Shipbuilding QM 450T - 38M - 28M

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Supplier Details

Ningbo Dalishi Crane Lifting Machinery Co.,Ltd

Free Member  (2012)

[ Ningbo, ZH, China ]

Business Type:  Manufacturer

Supplier has 12 products

Contact Details

Quick Details


Packaging and Delivery

Standard packing
Delivery Lead Time:
30~75 days

Product Description

Detail: 450t Electric Gantry Crane for Shipbuilding

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Place of Origin: | China |
Brand Name: | |
Model Number: | QM450T-38M-28M |
Certification: | ISO9001:2008 |
Max. Lifting Load | 450t |
Span | 38M |
Max. Lifting Height | 28M |
Crane Travelling Speed | 6-60m/min |
Trolley Travelling Speed | 2-30m/min |
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Gantry Cranes offer an economical solution to bridge cranes when the building is inadequate to support a bridge crane or the crane system is to be located outdoors. A box girder portal gantry crane is a gantry crane that utilizes a "box" configuration in fabricating the girder. This box girder design incorporates a four-sided box with a running surface plate for the hoist trolley attached to the bottom of the box. The advantage of the box girder is that it possesses greater loading capabilities and is able toapply tobiggerbridge distances. The crane is generally utilized in pairs with the hoisting mechanism operating on rails attached to the top of each box girder.

Gantry crane can be applied to both single girder and double girder format. It is ideal for outdoor applications where lifting devices can be applied without the cost of supporting steelwork. Indoor applications are also available where with a low ceiling and overhead cranes are not suitable. Typical occasions of goliath gantry crane include steel stock yards, loading areas, the concrete industry, ship building, and workshops.

Gantry/Portal/Goliath cranes are widely used in the following applications:
# # Precast yards
# Shipbuilding
# Container Handling
# Construction sites
# Marble / Granite Industry
# Mining Maintenance
# Bridge Construction sites
# Road Construction Sites
# Stock yards
# Scrap yards
# Railway yards

Design features include:

1. Main girder:
is welded of steel plates, connected by high-strength precision bolt. There are sliding rail for trolley to travel upper the girder which is fixed on outrigger by high-tension precision bolt

2. Outrigger
a). Consist of rigid outrigger and flexible outrigger, all connection points are connected by high-tension bolt
b). The ladder is used by operator to enter into cab or arriving at winch
c). when the span>30m, there need a flexible leg aiming at reducing the lateral thrust the trolley has to the rail when the girder load objects.

3. Travelling mechanism
consist of driving gear box and passive wheel box.

a). The driving gear box supplies power to realize the cranes travelling.

b). what the difference between driving gear box and passive wheel box is that passive wheel box lacks transmission structure such as dynamo, reducer and a pair of exposed gear

4. Trolley with hoist
is made up of trolley frame, winch and pulley block
a). Trolley frame welded of steel plate is the loading and travelling mechanism of trolley with hoisting
b). Winch is the lifting mechanism of trolley..when it works, wire rope affects the pulley as rising and falling movement, which makes suspended objects lifting and lowering

Warning: wire ropes need to be examined regularly and changed in time if there is a 10% broken wires, loosen wires and wearing down.

5. Cab
a). Glass window through which one can watch overall working condition is installed in the front and two sides of the cab
b). Electric cabinet as a group of independent cabinet , fixed outside of cab is connected by control cable and linkage station which is set up in the cab

6. Electrical system
a). lifting motor, crane travelling motor and hydraulic power motor are included. The whole electrical system is controlled by PLC.
b). two ways to operate the crane: cab operating and remote controlling.
c). Electric components are imported from Schneider in Germany

7. Platform
platform is installed in order to maintain the crane, the protective guard is added to protect the safety of servicemen.

General Drawing or Sketch or Draft Drawing

Technical Parameters

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Rated Lifting Capacity | 450t |
Clear Span | 32m |
Effective Lifting Height | 20m |
Trolley Traveling Speed | 3.5m/min |
Lifting Speed | 0.72-0.9m/min |
Trolley | 2*20t |
Rate of Pulley block | 2*12 |
Wire Rope Dia. | 42mm |
Crane Traveling Speed | 0-8m/min |
Wind Pressure under working | 148pa |
Lifting Capacity of Auxiliary hook | 10t |
Total Power | 148KW |
Total Weight | 880t |
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Basic Information

Business Type:
Year Established:
Total Employees:
101 - 500

About Us

Our company has concentrated on innovation and development for a long time and has accumulated rich experience in production. Assimilating and seeking the most developed trends and advantages, Zhongyuan designs and develops series of high, new and intelligent products. We have developed faster than our competitors in the world.

In order to make our company becomes a famous and professional manufacturer and honest service provider in the field around the world, we are independent and creative to make good use of high technology. We look forward to having good cooperation and communications with friends and partners from all over the world!

Member History

Year Joined:
Membership Type:
Free Member

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