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来源:百度文库 编辑:查人人中国名人网 时间:2024/05/09 14:43:41
汽车离合器有摩擦式、电磁式和液力式三种类型,其中摩擦式的应用最为广泛。在本文中就是设计以膜片弹簧为压紧弹簧的摩擦离合器。
在重型汽车中,通常采用的是周置弹簧离合器、中央弹簧离合器和斜置弹簧离合器。根据国外的统计资料:当载货汽车的发动机转矩大于400~450N*m时,常常采用中央弹簧离合器。由于膜片弹簧离合器有一系列的优点,并且制造膜片弹簧的工艺水平也在不断地提高,因而这种离合器已逐渐应用到重型汽车中,甚至在某些总质量达28~32 t的重型汽车也有采用。根据设计要求,该膜片弹簧离合器要采用推式结构(压式结构),即离合器分离时膜片弹簧弹性杠杆内端的分离指处的承受压力。
我国汽车产品设计距国际水平还有相当的差距,在离合器产品的设计和研究方面差距也是十分的大。离合器是直接与发动机相连接,进行切断和实现对传动系的动力传递。因此,作为汽车上的重要组成部分,离合器结构的改进,生产工艺的提高,已经是国内汽车行业迫在眉睫的大事。只有提高了离合器的性能,才可以更好地传递发动机的功率,才可以使中国的汽车行业在世界汽车领域中占一席之地。
本文根据上述所叙,对重载汽车的膜片弹簧离合器进行设计。设计中,综合考虑了离合器的结构形式及已知参数,通过反复对膜片弹簧、压盘及扭转减振器的受力分析和强度的计算、校核及修改,基本达到了设计的要求。

The car clutch is rubing types, electromagnetic type and hydraulic type three types, among them the application of the rubing type is most extensive. Design and regard diaphragm spring as and compress tightly the friction clutch of the spring in this text.
In the heavy-duty car, that was usually adopted is to put the clutch of the spring , central spring clutch in week and put the clutch of the spring obliquly . According to the statistical data of foreign countries: When the engine torque of the cargo truck is greater than 400---500N *m , often adopt the clutch of the central spring. Because diaphragm spring clutch have a series of advantage, make diaphragm technological level of spring improve constantly too, therefore this kind of clutch has already been applied to the heavy-duty car gradually, even adopt in the heavy-duty car up to 28--32 t of some total quality. According to the designing requirement, this diaphragm of spring clutches should adopt the pushing away type structure (pressing type structure ), clutch diaphragm spring elastic lever inner separation mean the pressure of bearing of the place separate.
Our country automobile product design is apart from the international standard also to have the suitable disparity, in the coupling product design and the research aspect disparity also is extremely big. The coupling is directly connects with the engine, carries on shuts off and realizes to the power transmission. Therefore, as the automobile on important constituent, the coupling structure improvement, the production craft enhancement, already was the domestic automobile profession imminent important matter. Only enhanced the coupling performance, only then may transmit the engine well the power, only then may cause Chinese the automobile profession to occupy small space this article in the world automobile domain according to above narrates, carries on the design to the heavy load automobile disk spring coupling. In the design, the synthesis had considered the coupling structural style and the known parameter, through repeatedly to the disk spring, the pressure plate and the reverse shock absorber stress analysis and the intensity computation, the examination and the revision, has basically met the design requirements .