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三一SCC4000型履带起重机是目前国内生产的最大吨位履带式起重机。它的诞生标志着我国履带起重机设计制造能力发生了质的变化。首先,单件运输质量限制及结构分析的应力值结果,使该机必须采用高强板型材;其次,超起装置应用及复杂的臂架系统使稳定性控制变得极为复杂;第三,该机从用户使用角度出发采用了电控方式。同时,这也是国内首次在履带起重机上成功应用超起装置,并且是国内惟一完整地应用超起装置的履带式起重机,它使起重机的起重能力由2 000 t·m增加到5 000t·m。该机在稳定性、机构能力、结构强度、速度参数、运输质量及尺寸、维修方便、转场灵活性及安全等方面均有周密的考虑与计算。SCC4000型履带起重机成功地进行了吊重500 t(5．3 m工作半径,起重能力2 650 t·m),以及
Trinity SCC4000 crawler crane is currently the largest domestic production of crawler cranes. Its birth marks a qualitative change in the design and manufacturing capabilities of crawler cranes in China. First of all, the quality of one-piece transport and structural analysis of the stress results, the machine must use high-strength plate profiles; Second, the application of super-lifting device and complex boom system stability control becomes extremely complicated; Third, the aircraft The use of electronic control from the user point of view. At the same time, it is also the first successful application of the super lifting device on the crawler crane in China and the only crawler crane in China that completely uses the super lifting device, which increases the lifting capacity of the crane from 2000 t · m to 5000 t · m . The aircraft in the stability, institutional capacity, structural strength, speed parameters, transport quality and size, easy maintenance, flexibility and safety of the transition are carefully considered and calculated. The SCC4000 crawler crane was successfully rigged with 500 t (5.3 m working radius and lifting capacity of 2 650 t · m), and