April - With the strong support from Tianjie SPMT, Guangdong LIFT Engineering Machinery Co.,Ltd(GPEC) was contracted by Wuchang Shipbuilding Industry to transport 3200t giant bridge section roll-on barge for Hong Kong-Zhuhai-Macau Bridge project in Zhongshan, Guangdong province. This giant bridge section, which total weighed 3,200 tones and had the dimensions 132.6 m x 33.1 m, were transported from the fabrication facility yard to the barge by using total 100-axle lines SPMTs. So, how to move this giant steel structure onto the barge safely and accurately? As theres over 20m distance from the bridge section and barge, crane is not suitable for this project. Based on the analysis of actual situation, our client GPEC choose the better solution of Tianjie S2.43 Self Propelled Modular Trailer (SPMT), which is more cost-effective and easier to operate. Detail Tianjie SPMT transport system configuration: 100 axle lines TJ-S2.43 SPMT (10 units - 6 lines module, 10 units - 4 lines module) compose 4 big SPMT modules 4 PPU (390kw Mercedes Benz engine for Power Pack Unit) 1 Wireless Remote control Normally it will take 5-6 hours to roll-on, but in this project, we need complete the whole process in 2 hours as the reason of Tidal influence. Also, high precision is essential for roll-on, deviation is controlled smaller than 5mm in every 100m movement. This requires everyone and every steps close-cooperation and no mistake permitted. The most difficult is, when SPMT move onto the barge, the barge will swing and tilt with the change of weight. So how to keep it balance? Thanks to the hydraulic steady system of Tianjie SPMT, which adopt reliable German brand main components and have hydraulic compensation stroke of approx. 700mm (±350mm). Hydraulic support cylinder on suspension is connected to each other by steel pipes and hose. One cut-off valve (ball valve) is used for grouping the hydraulic cylinders. Support system is set to three hydraulic groups according to cargo weight, center of gravity location and road conditions. This ensures a uniform axle load on rough road while running. Besides, the barge is equipped with pressurized cabin to outward drainage to ensure the balance. Through two hours efforts, Tianjie SPMT successfully assist the 3200t giant bridge section roll-onto the barge, this is the first step of HZMB CB02 project, one historic move in Chinese Bridge Construction area. But For Tianjie, this is just another case with SPMT.
Posted on: Sat, 19 Apr 2014 07:56:20 +0000
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