我国现行起重机设计规范明确规定,一种新产品样机必须经过组装运转试验、起重能力的应力测试、工业性考核三个阶段,确认符合规定的各项要求后,方能作为正式产品投入生产和使用。以上三个阶段的试验考核缺一不可,其中应力测试阶段尤为重要,它是样机最可靠的鉴定手段。对样机在各种 China’s current crane design code clearly stipulates that a prototype of new products must go through the assembly operation test, the lifting capacity of the stress test, the three stages of industrial assessment, to confirm compliance with the provisions of the requirements before they can be put into production as an official product use. The above three stages of the test are indispensable, of which stress testing stage is particularly important, it is the most reliable identification of the prototype means. For a variety of prototypes