The editor will take you to understand the relevant knowledge of gear couplings

时间:2016-08-26 16:59 作者:admin 点击:
 There are hundreds of types of gear couplings, but there are two basic forms: 1. Combination of internal and external teeth; 2. Combination of end gears.Other forms are deformations on these two foundations.
The maintenance of gear coupling is generally carried out as follows:
1. Check the tooth surface meshing of the coupling. The contact area is not less than 50% along the tooth height and not less than 70% along the tooth width. There should be no serious pitting, abrasion and cracks on the tooth surface.
2. The full circle runout of the outer gear ring of the coupling is not more than 0.03mm, and the end circle runout is not more than 0.02mm.
3. If you need to remove the gear ring, you must use special tools, not knocking, to avoid bending or damage to the shaft.When reinstalling, heat the ring gear to about 200°C before installing it on the shaft.The interference between the outer gear ring and the shaft is generally 0.01~0.03mm.
4. When reinstalling the intermediate tube or other parts, it should be assembled according to the original markings and data.
5. Tighten the bolts evenly with a torque wrench.
There are 3 lubrication methods for gear couplings, which can be selected according to different gear reducers and different load characteristics.
1. Powerful lubrication: The lubricating oil is sprayed into the small holes at the bottom of the gear teeth, and the oil enters the meshing surface under the action of centrifugal force to play the role of lubrication and cooling.The oil flows out from both sides of the tooth after passing through the meshing surface. With this type of lubrication, the oil circulates continuously, and impurities flow out. The injected lubricating oil causes a certain pressure to enter the meshing surface of the gear tooth under the action of centrifugal force. Good lubrication and cooling effect, suitable for high speed and heavy load occasions.
2. Self-flow lubrication: the lubricating oil is injected from the nozzle, flows through the gear backlash, and flows out from the small hole of the sleeve. This lubrication method mainly plays a cooling role, and it is difficult to form an oil film. The tooth surface wears faster than strong lubrication. .
3. Oil storage type lubrication: the lubricating oil is injected from the nozzle, and a certain lubricating oil layer is maintained on the outer circle of the gear due to the centrifugal force of the lubricating oil during rotation.This kind of lubrication will leave impurities in the ring gear, and the heat dissipation effect of the oil flow is also poor, so it is only suitable for occasions with low power and low speed.
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