千斤顶毕业论文.docVIP

可携带剪式千斤顶 【摘要】 本文主要阐释的是可携带剪式千斤顶的设计及模型制作。它的结构外形犹如剪刀，所用被称之为剪式千斤顶。 剪式千斤顶又叫支架千斤顶，轻便快捷，是国内各大汽车工厂随车产品，原理各有不同。由金属板材制成的上支杆和下支杆组成。上支杆的横截面与下支杆在齿部及其附近部分的横截面是一边开口的矩形，开口两边的金属板向内弯折。上支杆和下支杆上的齿是由开口两边弯折的金属板上制成，齿宽大于金属板厚。 剪式千斤顶由底座13、一对下支撑臂18、一对上支撑臂3、鞍座6、平面轴承9、螺母2、摇座8、销轴和丝杆20组成，一对上支撑臂3的边内翻成加强筋19，其末端成齿轮并啮合，一对下支撑臂18的边外翻成加强筋17，其末端成齿轮并啮合。 本实用新型具有外形更矮、自重较轻，承载能力大和通用性强等优点。适合于机械维修，尤其是小汽车维修使用。 剪式千运斤顶是一种简单的起重机械。它运动原理:剪式千斤顶是基于等腰三角形两腰不变缩短底边会提升高线的几何原理制作而来的。 它通过丝杆和螺母来调节上下两个等腰三角的底边来进行提升和下降高度的。就像平常生活中的工具梯，当梯子的两臂的夹角越小梯子就越高，同理梯子的两臂的夹角越大梯子就越低。 剪式千斤顶和液压千斤顶的区别：剪式千斤顶是机械千斤顶、液压千斤顶是油压千斤顶。 剪式千斤顶的用途：基于剪式千斤顶的特殊构造顶起的重量不会太大，一般都是2T一下的荷载。所以您就别指望它能顶起装货的货车。由于剪式千斤顶属于机械千斤顶，不用当心漏油的现象，我们还可以横过来使用。 关键词：升降 便携 千斤顶 支撑臂 丝杆 【Abstract】 This paper mainly is the interpretation of portable production design and model of shear type jack. Its structural configuration like scissors, used is called scissor jack. Scissors type jack is also called Jack, convenient, is the domestic each big automobile factory with the car product, the principle is different. Made of metal plate on the supporting rod and a lower support rod. The cross section of the supporting rod and the lower supporting rod in the tooth part and near the cross section is rectangular side openings, openings on both sides of the metal plate is bent inwards. The upper supporting rod and the lower supporting rod of the tooth is made of metal plate openings on both sides of the bending, the tooth width is greater than the thickness of metal plate. Scissors type jack is composed of a base 13, a pair of lower support arm 18, one pair of supporting arms 3, 6, 9, a plane bearing saddle nut 2, shake the seat 8, a pin shaft and a screw rod 20 components, one pair of supporting arm 3 edge inwards to form reinforcing ribs 19, the end of a gear and the meshing. A pair of lower arm cuffs into 18 reinforcing ribs 17, the end of a gear and the meshing. The utility model has the appearance of shorter, lighter weight, carrying capacity and has the advantages o