Nut for thread stop

In engineering products, a significant part of the connections are formed using threaded connections, the functioning of which largely determines the reliability of mechanisms and assemblies. To preserve the invariability of the tightening of threaded connections during the operation of vehicles, a nut is presented, in which the internal thread is divided into two parts with different geometric parameters. Nut thread profiles made with different profile heights are described. The first profile height is equal to the height of the initial contour with sharp vertices, and the other one is equal to the standardized height and rounded vertices. When assembling the connection between the increased working height of the nut thread profile and the internal diameter of the bolt thread, the necessary tightness is provided. In the zone of the upper section of the outer diameter of the thread of the nut, the metal is elastically deformed, therefore, when the bolt and nut are connected, an interference is formed with an increase in the coefficient of friction, which determines the operational reliability of the connection. The optimal ratio of the lengths of sections with different profile heights has been determined to ensure the necessary increase in the locking properties of threaded connections, depending on the specific operating conditions of vehicles. Conducted laboratory studies on a specially made stand showed the reliability of the initial scientific hypothesis, suggesting that the stability of tightening a threaded connection depends on changes in physical parameters associated with the distortion of the crystal lattice and changes in the density of dislocations that occur in the process of thread formation using a particular technology and during its operation. . A technique for accelerated testing based on the creation of an additional unscrewing torque has been developed, which can significantly reduce the amount of testing and predict the time after which it is necessary to re-tighten the connection. The nut is designed for repeated use during reassembly with retention of locking properties during the repair of various technical devices, including cars. The technology for the production of the proposed nut is simple and economical and involves the use of universal screw-cutting equipment available at any repair company. In further studies, it is planned to conduct long-term operational tests of vehicles in order to confirm the reliability of the proposed nut for thread locking at the same time as achieving the simplicity of the product and high manufacturability

Парламентский контроль в системе национальной безопасности

The authors note that national security as a condition of a state on being protected against internal and external threats, resistance to adverse external influences, and the provision of such internal and external conditions of the country, which guarantee the possibility of steady progress of society and its citizens, includes many methods, ways and means to ensure the stability of the constitutional order. One of the most important elements of the national security system is parliamentary control. Different approaches to the definition of the concept and content of parliamentary control in different countries are analyzed, taking into account the peculiarities and differences of legal systems.Los autores señalan que la seguridad nacional como condición de un estado para estar protegido contra amenazas internas y externas, la resistencia a influencias externas adversas y la provisión de tales condiciones internas y externas del país, que garantizan la posibilidad de un progreso constante de la sociedad y Sus ciudadanos, incluye muchos métodos, formas y medios para asegurar la estabilidad del orden constitucional. Uno de los elementos más importantes del sistema de seguridad nacional es el control parlamentario. Se analizan diferentes enfoques de la definición del concepto y el contenido del control parlamentario en diferentes países, teniendo en cuenta las peculiaridades y diferencias de los sistemas legales.Авторы отмечают, что национальная безопасность как условие защиты государства от внутренних и внешних угроз, противодействия неблагоприятным внешним воздействиям и обеспечения таких внутренних и внешних условий в стране, которые гарантируют возможность устойчивого развития общества и общества. Его граждане включают в себя множество методов, способов и средств обеспечения стабильности конституционного строя. Одним из важнейших элементов системы национальной безопасности является парламентский контроль. Анализируются различные подходы к определению понятия и содержания парламентского контроля в разных странах с учетом особенностей и различий правовых систем

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According to the authors, the effectiveness of the work of the Moscow state machine was largely determined by the extent of feedback channels within the supreme power. In the summer of 1547, the passivity of the supreme power in investigating the facts of abuse of governors, eliminating the consequences of the fire, coupled with the growth of taxes and crop failures and subsequent rise in the price of bread led to the rebellion of citizens in Moscow and forcing Ivan IV to dialogue and satisfy their demand

Parliamentary control in the national security system = Парламентский контроль в системе национальной безопасности

Different approaches to the definition of the concept and content of parliamentary control in different countries are analyzed, taking into account the peculiarities and differences of legal system

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Parliamentary control in the national security system = Парламентский контроль в системе национальной безопасности

Different approaches to the definition of the concept and content of parliamentary control in different countries are analyzed, taking into account the peculiarities and differences of legal system