Gear coupling is composed of internal gear ring with the same number of teeth and flange half coupling with external teeth. Gear coupling is based on spur gear coupling, digesting and absorbing foreign advanced technology And developed a new type of gear coupling. The external teeth are divided into straight teeth and drum teeth. The so-called drum teeth means that the external teeth are made into a spherical surface. The spherical surface is on the gear axis. The tooth side clearance is larger than that of ordinary gears. Drum gear couplings allow Larger angular displacement can improve the contact conditions of the teeth, increase the torque transmission capacity, and prolong the service life.
Gear couplings are widely used, from high-speed turbine units to medium and low-speed heavy metallurgy, mining, lifting and transportation equipment, and a large number of applications have also formed their own standard series, which are made of drum-shaped external teeth with tooth thickness. The meshing pair composed of the shaft sleeve and the matching inner gear ring connects the two shafts, which is suitable for heavy load and two-axis transmission that requires axis displacement compensation. Under normal circumstances, it is required that the two shafts to be connected are concentric, and it is impossible to continue to maintain the concentric state during operation. Because of installation errors, bearing wear, force deformation, foundation sinking, etc., the axis produces radial and angular directions. To displacement.
The gear coupling has the characteristics of compensating the above displacement, reduces the additional load caused by the axis displacement, improves the working stability and reliability of the transmission device, and thus prolongs the service life of the transmission device. Coupling A half-moving half-coupling with an internal gear, which forms a closed circuit with the gear. The large width of the radial groove is slightly smaller than the thickness of the elastic element bundle to ensure that the elastic element is pre-tightened after being installed in the radial groove. As the distance between the gears decreases, the rigidity of the coupling will increase. The element will work in a bent state, while the sheet bundle is relatively sheared, which may make the coupling obtain some nonlinear characteristics to ensure that the coupling has a large elastic vibration damping performance.
When the driving coupling rotates, the gear interacts with the gear, and the gear warp shaft transmits torque to the driven half coupling. At this time, the two half couplings will work under certain relative rotation conditions. When the coupling stops working, the gear will return to the initial position under the action of the elastic element. The tolerance clearance fit between the inner tooth inner diameter and the outer tooth outer diameter of the gear coupling is also particularly important. The bulge curve is mostly one arc, and there are also three arcs. These circles are called bulge circles. In the degree curve, there is a bulge circle on the gear axis. The smaller the gear tooth concentrated load is, the better, and the curvature of the tooth surface is proportional to the circumference of the drum, so the drum radius is as large as possible.
