液壓鉚接系統(tǒng)的設(shè)計與應用
[Abstract]:With the development of national economy and the development of basic research such as metals, metal plastic deformation tools have been developed and perfected. The earliest rivets were small studs of wood or bone, equivalent to today's sockets or wedges, a form of riveting called tenon and tenon; the earliest metamorphic form should be the rudimentary form of rivets as we know them today. The original riveting is completed by beating the metal to deform the metal. With the gradual development of metal application technology, especially the progress of industrial production, rivets and riveting tools are constantly changing. The early riveting machine was realized by the movement of crank or cam. The appearance of steam power riveting machine made riveting gradually get rid of mechanical riveting and wind pressure riveting slowly replaced steam riveting. The initial hydraulic riveting was riveted by hydraulic impact. At that time, the pressure of hydraulic system could not be maintained at a stable level, and the pressure attenuation was very serious, so the riveting was not sustainable. The real hydraulic riveting system was developed by Mr. Ralph of England. The use of counterweight accumulator solves the problem of pressure stability and allows riveting to continue. Hydraulic riveting equipment is the primary power device for metal plastic deformation under the principle of action force and reaction force. Foreign hydraulic riveting technology has been introduced into China since 1980's, which is mainly used in military industry and aviation. With the conversion of dual-use technology, hydraulic riveting technology began to be applied in the fields of construction, bridge, automobile and railway in the 1990s. In order to digest and absorb the imported technology, follow the advanced technology and development in the world. Some enterprises began to produce hydraulic riveting equipment by themselves, but mainly in imitation and hydraulic system integration, so our hydraulic system is directly different from the similar equipment in western European developed countries. The hydraulic riveting equipment in our country is still in the imitation stage, and there are few products with independent intellectual property right. Because of imitating design, our products can not achieve rapid transcendence, and the stability of product quality needs to be improved. The principle of hydraulic riveting is introduced, and a hydraulic riveting equipment is designed according to the mechanical properties of 16mm rivets and combined with the existing hydraulic equipment through optimization and improvement. Includes hydraulic pump station design and riveting device design. Hydraulic riveting equipment is based on synthesizing all aspects of factors and actual application conditions to complete the overall scheme design of hydraulic system and the application design of riveting system under working conditions. On the basis of the overall design scheme, the hydraulic control system is designed, the riveting hanger and the running mechanism are designed, the basic scheme of the hydraulic system and the drawing of the hydraulic system diagram are worked out. The innovative design of oil tank, hydraulic pump and motor is designed to make the tank embedded in the motor, thus reducing the volume of pump station to the maximum extent. The performance of the designed hydraulic pump station is verified by the pull-off force test and the lateral vibration test, and some constructive suggestions are put forward for the use and maintenance of the pump station.
【學位授予單位】:西南交通大學
【學位級別】:碩士
【學位授予年份】:2013
【分類號】:TG938
【共引文獻】
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