CL type gear coupling

CL型齿式联轴器属于刚挠性联轴器，齿式联轴器是由齿数相同的内齿圈和带外齿的凸缘半联轴器等零件组成。外齿分为直齿和鼓形齿两种齿形，所谓鼓形齿即为将外齿制成球面，球面   在齿轮轴线上，齿侧间隙较一般齿轮大，鼓形齿联轴器 可允许较大的角位移（相对于直齿联轴器），可   齿的接触条件，提高传递转矩的能力，延长使用寿命。有角位移时沿齿宽的接触状态。具有径向、轴向和角向等 轴线偏差补偿能力，具有结构紧凑、回转半径小、承载能力大、传动、噪声低及维修周期长等优点，特别适用于低速重载工况，如冶金、矿山、起重运输等行业、也适用于石油、化工、通用机械等各类机械的轴系传动

CL型齿式联轴器在工作时，两轴产生相对角位移，内外齿的齿面周期性作轴向相对滑动，必然形成齿面磨损和功率消耗，因此，齿式联轴器需在有良好和密封的状态下工作。齿式联轴器径向尺寸小，承载能力大，常用于低速重载工况条件的轴系传动，并经动平衡的齿式联轴器可用于高速传动，如燃汽轮机的轴系传动。由 于鼓形齿式联轴器角向补偿大于直齿式联轴器，均广泛采用鼓形齿式联轴器，直齿式联轴器属于被淘汰的产品，选用者应尽量不选用。

Features of CL type gear coupling (compared with straight gear coupling, it has the following characteristics):

1. Carrying.Under the same outer diameter of the inner gear sleeve and the 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.

2. Large angular displacement compensation.When the radial displacement is equal to zero, the allowable angular displacement of the spur gear coupling is 1o, and the allowable angular displacement of the drum gear coupling is 1o30', an increase of 50%.Under the same modulus, number of teeth, and tooth width, the allowable angular displacement of the drum gear is larger than that of the straight tooth.

3. The drum-shaped tooth surface makes the contact conditions of the inner and outer teeth avoid the disadvantages of squeezing the edge of the straight tooth and stress concentration under the condition of angular displacement. At the same time, it reduces the friction and wear of the tooth surface, reduces the noise and maintenance The cycle is long.

4. The tooth end of the outer gear sleeve is in the shape of a horn, which makes the assembly and disassembly of the inner and outer gears convenient.

5. The transmission reaches 99.7%.

Based on the characteristics of warp, at present, drum-shaped teeth have generally been substituted for straight-tooth couplings.