For different types of mowers, the number of fasteners specified in the number of fasteners will have a great influence on the degree of fastening. According to the characteristics of the mower, the number of fasteners per blade should be specified to be no less than two sets. In addition, considering the mechanized use and maintenance of the rural pastoral area during assembly, there are individual unqualified factors in the firmware. In order to ensure its safety, it should also be stipulated that the number of unsatisfactory defects per blade fastener should not exceed 10 sets, each machine The number of fastener failures is less than 5 sets. The number of tightening torques will vary greatly depending on the quantity. If there is a "set of bolts in a machine that is not qualified and installed on a moving blade, it will not be able to tighten. Therefore, the number of fasteners is very strict. necessary.
For different types of mowers, the corresponding nominal size is specified only for the fastener grade. The safety of the product cannot be guaranteed. In practice, it is found that for the same type of mower, the fasteners selected by the enterprise are nominal. Dimensions vary, although each company uses a class of bolts, but the tightening torque differs a lot. It can be seen that it is very important to specify the fasteners with different nominal sizes for different products. For special specifications and models, reduce the nominal size. You can reduce the first-level nominal size and add two sets for each blade. The method of fasteners is solved.
In summary, the fasteners should be scientifically and strictly regulated to ensure the safety of the products, which is convenient for the enterprise to have reliable basis when selecting the matching fasteners, and also to increase the key items for the quality competition of the same model. Comparability, promote product quality, and enhance corporate competition awareness. National compulsory standards are an important basis for enterprises and quality supervision and management departments to check product safety. Whether the standard is scientifically and reasonably related to the quality of the product, the development of the enterprise, the impartiality of the inspection organization, the scientific nature and the safety of the person. Therefore, only the standard content is scientific and rigorous, and can fully reflect the purpose and purpose of the mandatory standards, in order to provide scientific and accurate technical basis for production enterprises and inspection agencies. The contact with scientific research units really serves as a bridge and a link to promote the development of agricultural machinery promotion. . At the same time, we will establish a sense of unity, a sense of the overall situation, a sense of responsibility, a sense of pre-emptiveness, a sense of innovation, and a sense of dedication. We must be sure that our thinking is stable in our work, that our basic point is to be at the forefront, our thinking is to be innovative, and our efforts are to be implemented.
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