CouplingUnder the condition of angular displacement, the edge of the straight tooth is squeezed and the stress is concentrated. The drum tooth surface improves the contact conditions of the inner and outer teeth, thereby reducing the friction and wear of the tooth surface and reducing the noise.Under the same conditions, the outer diameter of the inner gear sleeve and the maximum outer diameter of the coupling, the carrying capacity of the drum gear coupling is on average 15-20% higher than that of the straight gear coupling.
Check and calculate according to the nominal torque, shaft hole diameter and shaft hole length to finally determine the model of the drum gear coupling.For example, gear couplings are widely used in shaft transmissions of metallurgical machinery and heavy machinery.
In metallurgical machinery and heavy machinery low-speed and heavy-load shafting transmission, shock, vibration and two-axis deviation are the unfavorable factors of proportional convexity. Only the drum gear coupling with good vibration reduction and cushioning effect can improve the operation of the transmission system. Status, and gear couplings are rigid movable couplings regardless of drum-shaped teeth and straight teeth.
Some high-speed drum gear couplings sometimes use the structure of the oil collecting groove, that is, the oil collecting groove is machined in the shaft hole of the external gear, and the oil hole communicating with the oil collecting groove is drilled at the bottom of the tooth groove of the external gear, in order to make it fully lubricated. , We use the centrifugal force generated by the high-speed operation of the drum-shaped gear coupling to spray the oil into the meshing part of the inner and outer teeth.
The drum gear coupling is suitable for low-speed and heavy-duty working conditions, such as metallurgy, mining, lifting and transportation industries, and also suitable for shafting transmission of various machinery such as petroleum, chemical, general machinery and so on.
Drum-shaped gear coupling is a key equipment for energy saving.Sometimes there will be some failures, as follows:
1. Insufficient lubrication or dry grinding;
2. The oil is not clean;
3. The center deviation of the drum gear coupling is too large, and the relative displacement of the tooth surface is large;
4. Poor oil quality, which contains acids or sulfides, etc.;
5. Excessive installation interference causes the tooth head clearance to disappear;
6. Poor material and low tooth surface hardness;
7. The tooth profile design of the drum gear coupling is not reasonable enough, the tooth top interferes or the machining accuracy is not high.