尽管无链牵引采煤机较链式牵引采煤机在运动特性方面得到了根本改善,但仍然存在着同期性的脉动现象。现对销轮齿条啮合式无链牵引采煤机运动特性进行初步探讨。销轮齿条啮合式无链牵引采煤机运动速度是脉动的,且有周期性突变,这对采煤机工作性能和使用寿命是不利的。为了改善其运行特性,本文以六柱销轮与直线齿条啮合的无链牵引机构为例,从分析速度和受力情况入手,探讨产生冲击的原因,并提出改进齿条形状的粗浅看法。一、运动速度分析设销轮节园半径为R,则六柱销轮的任两相邻柱销中心距t均等于R,又设t与齿条 Although the chain-less shearer has been fundamentally improved in its kinematic characteristics compared with the chain shearer, the pulsation of the same period still exists. Now the pinning rack and pinion traction chainless traction shearer characteristics of a preliminary study. Pin-rack-type chain-free traction shearer moving speed pulsation, and a periodic mutation, which Shearer working performance and service life is unfavorable. In order to improve its operating characteristics, this paper takes the chainless traction mechanism with six pin wheel engaging with straight racks as an example. Starting from the analysis of speed and force, this paper discusses the causes of impact and puts forward some superficial views to improve the shape of racks. First, the analysis of speed of motion Assuming that the radius of the wheel park is R, the center distance between any two adjacent pins of the six-pin wheel is equal to R, and t and the rack