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SP3103型自卸汽车均采用第一汽车制造厂生产的解放CA3101自卸车底盘。车厢采用全金属船形结构，双缸举升，装载质量为5t。我地区以运煤。土方和沙石为主。这种车使用中先后发生油缸上支架断裂的故障。油缸上支架与油缸活塞杆铰接形式如图1所示。断裂部位在上支架的上固定螺栓孔
SP3103 dump trucks are produced by the first car factory liberation CA3101 dump truck chassis. Car with all-metal boat-shaped structure, two-cylinder lift, loading quality 5t. My area to transport coal. Earth-based and gravel-based. This car has occurred in the tank fracture on the bracket failure. Cylinder bracket and cylinder piston rod hinge form shown in Figure 1. Fracture in the upper bracket on the fixed bolt hole