Truss Double Girder Gantry Crane for Bridge Construction

Truss Double Girder Gantry Crane for Bridge Construction

Truss double girder electric Gantry Cranes for highway and bridge construction offer an economical solution to overhead cranes when the building is inadequate to support a bridge crane or the crane system is to be located outdoors. Truss Girder Portal Gantry Cranes are a variation from the typical beam or box girder that becomes economical when long crane spans are required. Additionally, many truss girders allow the hoist to be located "up into" truss thereby offering much better hook height than a single beam or box girder crane. Also, truss girder cranes are typically more economical than long span beam or box girder cranes. Truss girder cranes offer almost limitless span - but capacity is often restricted with longer spans. Truss girders

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:

1.Precast yards

2.Shipbuilding

3.Container Handling

4.Construction sites

5.Marble / Granite Industry

6.Mining Maintenance

7.Bridge Construction sites

8.Road Construction Sites

9.Stockyards

10.Scrapyards

11Railway yards

Unique design features include:

1. Steel structure part of the gantry crane is welded by U-steel with light weight, low cost and convenient assembly and disassembly.

2. Fast lifting speed and high wind resistance

3.Many safety devices such as overload limiter, over-height limiter and overspeed switch are added to ensure products’ safe operation.

4.We can design gantry cranes with different specifications to meet different customers’ requirements.

5.Full penetration sub-arc welded top flanges for the ultimate in strength and fatigue resistance.

6.Line bored one piece end carriages to ensure precise alignment and smooth travelling options.

7.High quality enamel paint with optional 2-pak or client specific systems.

8.Oversized motors and controls to allow operation in high wind conditions, sandblast and high performance paint systems, galvanized fasteners, space heaters in motors and controls, hoist covers, motor covers etc.
9 Peace of mind knowing that your crane is designed by qualified engineers and manufactured by qualified boilermakers, electricians and fitters.

General Drawing or Sketch or Draft Drawing

    Nante Machinery is a subsidiary company of Zhejiang Zhongjian Road & Bridge Machinery Co, . LTD.

    We have 25 years experience in lifting equipment manufacturing.Four production bases and two R&D Centers covers an area of morethan 100, 000 square meters, and above 400+ skilled employees, among which, a rough 10% are engineers. Our production lines are all equipped with world-leading brand tools and devices.

    In recent years, our annual revenue has steadily exceeded 80 million USD, in which  20% are contributed from oversea market. We have established long term business relationship with lots of clients from USA, Singapore, Indonesia, Kenya, India, Cambodia, South Africa, Albania, Chile etc. 

    As a mature heavy machinery manufacturer, we not only produce individual industrial equipments, but also deliver an end-to-end solution to cover the entire project lifecycle including machinery design, manufacturing, installation and on-going maintenance. We have more than 50 models of products, which can be divided into five major categories as following:

1. Series of construction cranes

Bridge launching crane, form traveller, bridge deck launching gantry, tower crane etc.

2. Series of workshop, shipyard, and port cranes

overhead crane, gantry crane, jib crane and portal crane etc.

3. Various parts of cranes

Electric hoist, winch, motors, rails, bus bars etc.

4. Structural steel projects

Contractor of industrial steel structures such as new-built workshops, towers, chutes, etc

5. Steel Bailey bridges

Two standard models called Compact 100 and 200 in International market

    Quality concept lies deeply in our blood:

1. Passed ISO9001:2008 Quality Management System

2. Holder of Class A License of Manufacturing and Repairing of China Specialized Equipments.

3. Member of China Construction Machinery Association.

4. China AAA Credit Company

5. ZHEJIANG Top Brand and Trade Mark

    Fact is always more persuading than paper works. We Design and Build Chinese highest truss gantry crane, longest beam launcher and Drafter Chinese beam launcher national standard.

    We pursue the value of professional, innovation, integrity and win-win in our company’s long term development strategy. We target to become one of China’s top manufacturer and solution provider in the heavy machinery industry and a competitive player in the overseas market.