HSBRIDGE 220T Bridge Girder Launcher Successfully Installed in Pakistan

Project Background

Good news came from the overseas market recently. The 50M/220T bridge girder launcher built by HSBRIDGE finished assembly and heavy-load trials in Pakistan. It was at a key highway project. It is now handed over for bridge erection. This marks the smooth completion of a key project node. It also proves the excellent adaptability and reliability of HSBRIDGE heavy lifting equipment. This is true even under high temperatures and complex conditions in South Asia.

Core technical specifications of the bridge girder launcher

The Pakistan project site has large spans, steep longitudinal slopes, and curved terrains. The HSBRIDGE technical team customized the equipment to match these specific working conditions. This bridge girder launcher uses a double guide beam structure. This improves overall stiffness. It also ensures extreme anti-overturning stability during hole-crossing operations.

Below are the core parameters of this equipment:

Efficient and precise frontline assembly and testing

Facing temperatures near 40 degrees Celsius and language barriers, the HSBRIDGE overseas team worked closely with local workers. They completed the equipment assembly and launch with high standards.

• High-precision main beam closure: Two large mobile cranes worked together on site. They spliced the segmented pin-connected main beams in the air. Technicians used precise tools to monitor the straightness and camber of the main beam. This ensured the high-strength bolts’ tightening torque fully met design codes.
• System linkage and load testing: Electrical and hydraulic systems were connected. The team adjusted the hydraulic legs for posture compensation based on the 4% slope. During dynamic and static tests, the machine smoothly crossed a 50-meter simulated span. The main beam showed no structural deformation under a 1.1 times overload test. All indicators passed strict checks by local engineers at once.

Customized design for harsh overseas working conditions

It operates smoothly in Pakistan’s complex outdoor environment. This is due to many core technologies introduced during the bridge girder launcher design phase:

• VFD micro-adjustment control: Both lifting and traveling systems use VFD control. The speed is adjustable from 0 to 3 m/min. During girder dropping and hole-crossing micro-movements, the VFD ensures smooth transitions. This avoids sudden shear forces on piers caused by shaking concrete beams.
• Multi-level anti-slip and anti-wind systems: South Asian monsoons bring frequent sudden gales. The machine has rail clamps, hydraulic anchors, and anti-overturn switches. In non-working status, wind resistance reaches level 11. This ensures absolute safety during storms or when unattended.
• Slope and curve adaptive mechanism: It works for slopes under 3% and curves over 600 meters. Middle and front legs of the bridge girder launcher have angle-adjustable shifting systems. The machine auto-corrects its path during hole-crossing without frequent track adjustments.

Case Summary

The successful use of this 50M/220T bridge girder launcher provides strong support. It highly supports local highway construction in Pakistan. High-precision VFD control and excellent curve/slope adaptability greatly shorten erection cycles. This also reduces safety risks during frontline high-altitude operations.

As a professional lifting equipment maker, HSBRIDGE offers reliable hardware. Our fast overseas service team ensures stable productivity in Belt and Road projects. In the future, we will keep focusing on global infrastructure markets. We will reward clients with more rigorous and professional lifting solutions.

Anni Zhang

Crane & Heavy Equipment Export Specialist

With 10+ years of experience in the Crane Overseas Export Industry, helped 10,000+ customers with their pre-sales questions and concerns. If you have any related needs, please feel free to contact me!

[email protected] WhatsApp

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