文档介绍：
摘要
起重机械是减轻笨重体力劳动,提高作业效率、实现安全生产的起重运输设备。在国民经济各部门的物资生产和物资流通中,手拉葫芦作为关键的工艺设备或重要的辅助机械,应用十分广泛。一个完整的作业循环一般包括取物、起升、平移、卸载,然后返回原处等环节。经常起动、制动、正向和反向运动是起重机械手拉葫芦的基本特点。手拉葫芦的设计和使用应符合GB3811《起重机设计规范》和GB6067《起重机安全规程》的规定。
,运用一整套II级齿轮减速传动,手拉葫芦主要用在工厂、矿山、建筑工地、码头、船坞、仓库或者在没电的情况下施工的场合,原动力靠人工是手拉力来传动,减小手拉力,增大齿轮啮合传动比,使结构紧凑美观,经济耐用是设计的目的。
手拉葫芦是通过拽动手动链条、手链轮转动,将摩擦片棘轮、制动器座压成一体共同旋转,五齿长轴便转动片齿轮、齿短轴和花键孔齿轮带动起重链轮,由起重链轮带动起重链条吊起重物。
关键字:起重机械,手拉葫芦,起动,制动,齿轮减速传动
ABSTRACT
The hoisting machinery is relieve heavy manual labor, improve working efficiency, realize safe production of lifting transportation equipment. In national economic sectors of material production and material circulation, hand hoist as key technological equipment or important auxiliary machinery, application of very extensive. plete homework circulation generally includes take things, hoisting, translation, unloading, and then returns to its place such links. Often starting, braking, forward and reverse movement is lifting type hoists the basic characteristics of manipulator. Hand type hoists ply with the design and use of GB3811 the crane design code "and GB6067 the crane safety rules" regulation.
The design of the hand in the gourd is lifting up around the clog tons, using a set level II gear transmission, and hand gourd basically use in factories, mines, construction sites, dock, dock, warehouse or don't have electricity situation in construction occasions, impulsion by artificially is a hand pull to drive, minus small tension, gearing ratio increases, compact structure and beautiful, economic durable is the design purpose.
The hand tractive bottle gourd is to begin to move chain, bracelet rotation to move through a Ye, friction slab the ratchet, holdfast mount print integral mon revolution, five tooth major axises then the slewing slab gear, tooth minor axis and the flower key hole gear start to arouse heavy chain wheel, from rise heavy the chain wheel start to arouse heavy the chain hang u