Withdrawal sleeves can be used to mount bearings with a tapered bore onto the cylindrical seat of stepped shafts. The sleeve is pressed into the bore of the bearing inner ring, which abuts a shaft shoulder or similar fixed component. The sleeve is located on the shaft by a nut or an end plate. KM or HM lock nuts with appropriate locking devices are suitable.
Recommends using a hydraulic nut to press the withdrawal sleeve into the bearing bore, as a considerable amount of force is required to overcome the friction between the bearing, sleeve and shaft.
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In the development of the agricultural machinery industry, the following problems are often caused by the existence of non-standardization:
Improve the standard of agricultural machinery industry and promote the upgrading of agricultural machinery products
[China Agricultural Machinery Industry News] At present, the development of China's agricultural machinery industry has entered a new stage of development. The experience of modern agricultural machinery development and the successful practice of agricultural machinery standardization construction in various places show that the agricultural machinery industry assembles advanced science and technology and mature experience into standards, promotes and applies them to agricultural machinery production, management and safety management, and transforms technology into productivity. Make agricultural machinery development more scientific and systematic. This move is a very important basic work to promote the upgrading of agricultural machinery products, and has far-reaching significance for the development of modern agriculture.
Improve the standard of agricultural machinery industry and promote the upgrading of agricultural machinery products
The impact of non-standardization in the production sector. The agricultural locomotives, especially the modified tractors, were found in many agricultural machinery repair departments in the area under investigation. Because they were not completely produced according to the national standard, the repair and replacement of the various parts of the modified tractors caused great inconvenience, even for a certain type of vehicle. These parts are not interchangeable. The waste is caused, and the greater impact is that the quality and effectiveness of the product cannot be guaranteed.
The impact of non-standardization of circulation. Due to the lack of standardized operations, the phenomenon that agricultural machinery consumers are dissatisfied with the services provided by vendors has become more common. The requirements of various retailers for after-sales service, lack of a unified domestic consistent after-sales service normative standards to reduce the contradiction between the interests of both parties and litigation costs. The seller believes that the consumer has made too many unsatisfied demands. Consumers complain that the three-package of agricultural machinery sellers is not thorough, the service can not be in place in time, and feels: "When one pays, many things don't matter!"
The impact on the safety management of agricultural machinery. The practice and daily behavior of the supervisors, because there is no standard that both parties know and work, often mistaken by the operator for power abuse, doubting the seriousness of law enforcement; the operator can not violate the consequences of his own driving in the driving operation Make an accurate judgment. In the eyes of managers, it is deliberately provocative, which is bound to challenge the implementation of strict law enforcement and enthusiasm.
The above problems can be solved by scientifically and rigorously formulating corresponding standards. A scientific standard can make agricultural machinery production stricter, more convenient for maintenance and use, can ensure product quality, enhance product interchangeability, increase product market competitiveness, break through trade barriers brought by agricultural machinery importing countries based on standardization, and avoid resources. Waste, and achieve effective use of resources.
In the agricultural machinery management process, the situation of non-understanding, unsupporting, untrustworthy, and uncooperative between law enforcement personnel and the machine operator occurs from time to time. According to the relevant laws, regulations and operational specifications of agricultural machinery safety management, agricultural machinery supervisors and agricultural machinery operators are formulated. The common behavioral normative standard, when a supervisor is engaged in the safety management of agricultural machinery, when a farmer operates a driving machine, the matters that should and should not be done are clearly and scientifically strictly regulated in the form of standards, so that managers and managers They can clearly understand what each other and the other party should do, so that on the one hand, management can be more effective and faster, on the other hand, it can avoid conflicts and rent-seeking due to power ambiguity and unnecessary understanding of management. Contradictions, confrontations or conflicts, reducing the subjectivity of law enforcement officers in the process of law enforcement and the willful behavior of managers. Let the operators and managers have an accurate understanding and judgment on the possible consequences of their actions, and change others into self-discipline.
Of course, the formulation of standards is not a matter of once and for all. We must implement the standards carefully after we have developed the optimized methods. Let the standard be consolidated and solidified over a period of time to form a habit to fully exert its effectiveness.
As long as the standardization can last for a long time, the Ministry of Agriculture issued the “Agricultural Machinery Standardization System Construction Plan (2010-2015)â€, which is oriented towards the production field, as required in 2009, to clarify the content and construction objectives of agricultural machinery standardization construction. Scientifically formulate relevant standards for agricultural machinery production and circulation, safety management, quality supervision, and safe operation, and integrate all aspects of simplification, standardization, and modularization into a unified standardization system, which will certainly be more effective for the agricultural machinery industry and agricultural machinery industry. The long-term development of harmony.
(Original title: Standardization of agricultural machinery industry needs improvement)