Special model for universal coupling crane

The universal joints for cranes are divided into two series: JXC series and SWF series commonly used in the market.Universal coupling保养维护首先是润滑，轴承处宜用2号锂基脂，在高温条件下则用3号，4号复合钙基脂或4号合成锂基脂，每月注油一次；须经常检查螺栓的紧固性，并按一定的预紧力扳紧；起重机专用万向联轴器技术参数及外形尺寸，法兰盘直径110-440mm；法兰标准孔距90-385mm；螺栓数量及大小6-φ9--16-φ28；万向联轴器最短长度405-1499mm；伸缩量范围15-60mm。
The universal coupling utilizes the characteristics of its mechanism to make the two shafts not on the same axis, and when there is an angle between the axes, it can realize the continuous rotation of the connected two shafts, and reliably transmit torque and motion.Universal couplingmaximumThe characteristics are: Its structure has a large angular compensation capability, compact structure and high transmission efficiency.The angle between the two axes of universal joints of different structures is different, generally between 5°-45°.The universal coupling for cranes is only one type in the market, and there are many types of universal couplings.Cross-shaft universal coupling, this coupling can allow a large included angle between the two shafts (the included angle αmaximumIt can reach 35°～45°), and when the machine is running, the included angle can still be transmitted normally; but when α is too large, the transmission efficiency will be significantly reduced.The disadvantage of this type of coupling is that when the angular velocity of the driving shaft ω1α is constant, the angular velocity ω3 of the driven shaft is not constant, but changes within a certain range (ω1cosα≤ω3≤ω1/cosα), which will produce Additional dynamic load.In order to improve this situation, cross-shaft universal joints are often used in pairs, but attention should be paid to ensure that the angles between the Ol shaft, O3 shaft and the intermediate shaft are equal, and the two ends of the intermediate shaft are fork-shaped The joints should be in the same plane.
Small universal couplings are used to transmit motions that are not on the same axis. There are single type (WSD), double type (WS), retractable type (WSS), straightening machine (WHL, WSL); the material is 45# steel , 40Cr, stainless steel, etc.; the surface can be treated with blackening, nickel plating, galvanizing, etc. The material of WSD small universal joint coupling: WSD cross shaft is made of alloy steel with a hardness of 58-62HRC after heat treatment. Other parts are made of 35 or 45 steel and heat-treated 48-52 HRC. The two ends of the WSD coupling are connected in the form of a cylindrical hole, a cylindrical hole with a keyway, and a square hole when the two ends use the same hole shape; when the two ends use different hole shapes, there are a cylindrical hole and a cylindrical hole with a keyway, and there is a cylindrical hole And square hole, cylindrical hole with keyway and square hole.