Bridge launcher

Weihua bridge erection gantry is a large-scale specialized construction equipment designed specifically for bridge construction projects such as highways and railways. It is primarily used to safely, efficiently, and precisely erect precast box girders or T-beams on construction sites. It integrates Weihua’s technological expertise in heavy structural design, high-precision motion control (anti-sway and automatic positioning), and equipment intelligence. It is designed to meet the stringent requirements of large tonnage, high precision, and high safety in modern bridge construction.

The WH-JQJH 900t bridge erection gantry is mainly composed of the main beam, cantilever beam, lower guide beam, front and rear legs, auxiliary legs, girder lifting trolley, cantilever hoist, and electro-hydraulic system. It is suitable for erecting single-span simply supported beams of three different span lengths, offering high operational efficiency.

This type of bridge erection gantry can erect straight and curved (R>2000m) lines, with longitudinal slopes <20, for 20m, 24m, 32m equal spans, variable spans, and full-span prestressed concrete box girders. In addition to standard bridge erection operations, it can also handle tasks such as first/last span erection, curved erection, variable span erection, spanning continuous beams, composite beams, continuous rigid frames, existing bridge erection, and simply supported to continuous span erection. It offers advantages including simply supported erection, fixed-point lifting, good stability during girder lifting, high operational efficiency, safety and reliability, convenient span adjustment, and ease of operation.

Advantages & Features

Applications

Weihua bridge erection gantries primarily serve key areas of national infrastructure construction:

• High-Speed Railway & Passenger Dedicated Line Construction: Used for erecting railway box girders with high standards and heavy weight.
• Highway & Municipal Bridge Construction: Suitable for erecting precast beams for various highway bridges.
• Large River-Crossing & Sea-Crossing Bridge Projects: Serves the approach bridges or specific sections of mega bridges for beam erection tasks.

Weihua products have long served key national projects such as the “West-to-East Gas Pipeline,” “South-to-North Water Diversion,” and “Hangzhou Bay Bridge”, and have been successfully used in high-precision lifting tasks at the country’s four major satellite launch bases. This fully demonstrates its strong capability to undertake major national projects and provide highly reliable equipment. Its bridge erection gantries can be seen as an extension of this technical strength into the field of bridge construction.