Overhead crane is Hengjia in workshops, warehouses and empty field for material lifting material lifting equipment. Because of its ends located in the tall concrete pillars or metal bracket, shaped like a bridge. Overhead crane overhead bridge along the laying of tracks on both sides longitudinally running, you can take advantage of the space under the bridge lifting material from ground equipment obstacles. It is the most widely used, the largest number of a lifting machinery.
bridge gantry crane
2013年7月31日星期三
Gantry crane gear What is the purpose?
With the rapid development of modern science and technology, industrial production scale and increased automation, hoist crane s in the modern production process more widely, the role is getting bigger, the crane requirements are also increasing. Especially single girder gantry crane widely used, prompting a number of interdisciplinary advanced design methods appear to promote the modern manufacturing technology and testing technology improves. The fierce competition in the international market has become increasingly dependent on technology competition. These have all contributed to the technical performance of the crane into the new stage of development, the crane is undergoing a huge transformation.
Single girder gantry crane gear correction (modified) The purpose is to avoid the machine cutting gear teeth that occurs when the phenomenon under the cut and shape of the tooth profile by changing the ways to increase the strength of the tooth.
In practice, single girder hoist gantry crane minimum number of teeth pinion gear can be smaller, because the small incision resulting strength of the teeth will not have a significant effect.
In fact can be considered: for a 20 ° involute tooth profile, when the pinion gear wheel with standard high pinion gear, the next cut will occur in the number of teeth than the pinion 14, the pinion wheel and when a short tooth, the occurrence of the pinion number of teeth than 11:00.
In single-girder gantry crane manufacturing, the main use of the zero shift correction, this correction method that is closer to the cutting tool or removed by cutting gear centerline. The main advantage of this method is that you can use when cutting non-corrected standard used gear cutting tools. Axis gantry crane at the same time does not change.
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