Drum type gear coupling has good lubrication when working

Published: 2021-03-23

Compared with straight-tooth couplings, drum-type gear couplings have the characteristics of compact structure, small turning radius, large carrying capacity, high transmission efficiency, low noise and long maintenance period.Drum gear couplingAdaptive and self-adjusting technology that can compensate for load changes, especially distributed high-end drum gear couplings with communication, networking and integrated PLC; on the other hand, simple industry-specific drum gear couplings and Mechatronics, miniaturized drum-shaped gear coupling.The tooth end of the outer gear sleeve of the drum-shaped gear coupling is in the shape of a horn, which makes the assembly and disassembly of the inner and outer gears very convenient.

The drum-shaped tooth surface improves the contact conditions of the inner and outer teeth, avoids the disadvantages of edge extrusion and stress concentration of the straight tooth under the condition of angular displacement, and at the same time improves the friction and wear of the tooth surface, and reduces the noise. Long maintenance period.The drum gear coupling adopts the structure of the oil collecting groove hole. 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 rely on the drum tooth The centrifugal force generated by the high-speed operation of the coupling sprays oil into the meshing part of the inner and outer teeth.

Drum tooth is to make the outer tooth into a spherical surface, the center of the spherical surface is on the gear axis, and the tooth side clearance is larger than that of the general gear.The drum-shaped gear coupling can allow a larger angular displacement relative to the straight-tooth coupling.The drum-shaped gear coupling improves the contact conditions of the teeth, thereby improving the torque transmission capacity and prolonging the service life of the coupling.In order to eliminate the edge extrusion and stress concentration of the straight tooth end of the drum-shaped gear coupling under the condition of angular displacement, the drum-shaped tooth surface improves the contact conditions of the inner and outer teeth, thereby reducing the friction and wear of the tooth surface. , Reduce the noise.

When the drum gear coupling is working, the two shafts produce relative angular displacement, and the tooth surfaces of the inner and outer teeth periodically slide relative to each other in the axial direction, which will inevitably cause tooth surface wear and power consumption.Drum-shaped gear couplings need to work in a good and sealed state. Drum-shaped gear couplings have small radial dimensions and large load-bearing capacity. They are often used in shaft transmissions under low-speed and heavy-duty conditions, with high precision and movement. The balanced gear coupling can be used for high-speed transmission.The drum-shaped gear coupling has a contact state along the width of the tooth when angular displacement occurs, and it has a compensation mechanism to improve performance.

Drum-shaped gear couplings have good lubrication during operation, which can slow down wear. Most of them are lubricated by lubricating oil. The lubricating oil needs to be filtered by a high-precision oil filter with a filter degree of less than 10 microns. The tooth surface requires continuous lubrication, otherwise The tooth surface temperature will rise and will accumulate moisture and dirt.Drum gear couplings sometimes use the structure of oil collecting grooves, 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 gear groove of the external gear, in order to make the drum gear coupling The device is fully lubricated.

Drum-shaped gear couplings make the outer teeth into a spherical surface, the center of the spherical surface is on the gear axis, and the tooth side clearance is larger than that of a general gear.The drum-shaped gear coupling can allow a larger angular displacement relative to the straight-tooth coupling, and the contact conditions of the teeth are improved, thereby increasing the torque transmission capacity and extending the drum-shaped gear coupling Life.The clearance fit directly affects the service life of the drum gear coupling and the gap between the circumference and the hole. The drum gear coupling has a corresponding size fit according to the standard, that is, the degree of accuracy.

The gap between the machine connector and the drum gear coupling will not only affect the product damage life, but also bring about the transmission performance of the entire equipment. Rigid couplings can also cause noise.When the mechanical equipment is running, if the transmission parts move back and forth, it will bring friction, and the protruding friction will double the damage to the connecting pad.When using drum gear couplings, the equipment in the shafting system, such as diesel engines, gearboxes, shafting, and highly elastic couplings, must complement each other in design and use, and the level of design and manufacturing is also Relatively high, the quality of the ship designed in this way is also high.

Drum-shaped gear couplings are rigid, flexible, and inelastic, so they are not suitable for machinery that requires damping, buffering, and two-axis alignment.The main reason is that the shock absorber of the main machine sinks, which makes the shaft system of the drum gear coupling appear asymmetry, thereby increasing the additional torque, and causing a fracture accident due to heat during use.Drum-shaped gear couplings are widely used in many industries. They may be used improperly in specific situations, or they may be used without consideration, which will cause drum-shaped gears. The type coupling was damaged during use.