The utility model relates to an axial fastening and sealing structure of the output shaft of a gearbox, which comprises a flange, a self-locking nut, a stop gasket, a gasket and an O-ring. The flange is assembled on the output shaft of the gearbox, the O-ring is assembled on the output shaft of the gearbox and the flange groove, the gasket is assembled on the gearbox and is close to the O-ring, and the stop gasket is assembled on the gearbox and is close to the gasket. The stop pads, gaskets and O-rings are fastened by self-locking nuts. A gasket is added between the stop gasket and the O-ring to prevent the deformation of the O-ring. The gasket can stabilize the compression rate and high reliability of the O-ring. After the stop gasket is assembled, the self-locking nut is assembled in place and tightened directly. This not only ensures the sealing effect, but also reduces the coating of the plane sealant, and effectively prevents the defects of insufficient or overflow of the plane sealant. At the same time, the tightening sealing structure is also helpful to heat dissipation when the output shaft works, and also greatly simplifies the maintenance work in the future.
【技术实现步骤摘要】
一种变速箱输出轴轴向紧固及密封结构和工程机械变速箱
本技术涉及一种变速箱输出轴轴向紧固及密封结构,属于变速箱
技术介绍
变速箱输出轴装配时,紧固螺母需要涂平面密封胶。然而由于使用过程中很难控制平面密封胶的用量,导致装配后密封胶不充分或者外溢,不仅造成变速箱表面污染,还严重影响其密封性能,甚至很有可能堵塞安装螺纹孔。并且在拆卸输出轴总成后,为了保证密封效果,必须将结合面处残余密封胶清除,重新涂平面密封胶,费时费力。
技术实现思路
本技术的目的是提升输出轴轴向紧固及密封效果,并且使装配及日后的维修工作更为简单、方便。为达到上述目的,本技术采用的技术方案是:一种变速箱输出轴轴向紧固及密封结构,包括法兰、自锁螺母、止动垫、垫片和O型圈;所述法兰在变速箱输出轴上装配到位,所述O型圈装配在变速箱输出轴与法兰沟槽处,所述垫片装配在变速箱上且紧靠O型圈,所述止动垫装配在变速箱上且紧靠垫片,通过自锁螺母将止动垫、垫片和O型圈紧固。优选的是,所述垫片的厚度为1mm。优选的是,所述垫片的材质为45钢。一种工程机械变速箱,包括前述的变速箱输出轴轴向紧固及密封结构。本技术的变速箱输出轴轴向紧固及密封结构与现行的紧固密封结构相比,其主要特点是在止动垫和O型圈之间增加了一个防止O形圈变形的垫片,该垫片能稳定地保持O型圈压缩率、可靠性高,装配好止动垫后,再将自锁螺母装配到位后,直接紧固,不仅保证了密封效果,还减少了涂平面密封胶,能有效防止平面密封胶涂抹不充分或溢出等缺陷。同时,这种紧固密封结构也有助于输出轴工作时散热,也很大程度上简化了日后的维修工作。附图说明图1为本技术的结构示意 ...
【技术保护点】
1.一种变速箱输出轴轴向紧固及密封结构,其特征在于:包括法兰、自锁螺母、止动垫、垫片和O型圈;所述法兰在变速箱输出轴上装配到位,所述O型圈装配在变速箱输出轴与法兰沟槽处,所述垫片装配在变速箱上且紧靠O型圈,所述止动垫装配在变速箱上且紧靠垫片,通过自锁螺母将止动垫、垫片和O型圈紧固。
【技术特征摘要】
1.一种变速箱输出轴轴向紧固及密封结构,其特征在于:包括法兰、自锁螺母、止动垫、垫片和O型圈;所述法兰在变速箱输出轴上装配到位,所述O型圈装配在变速箱输出轴与法兰沟槽处,所述垫片装配在变速箱上且紧靠O型圈,所述止动垫装配在变速箱上且紧靠垫片,通过自锁螺母将止动垫、垫片和O型圈紧固。2....
【专利技术属性】
技术研发人员:龚虎,徐东云,岳满意,吴秀翠,
申请(专利权)人:徐州徐工传动科技有限公司,
类型:新型
国别省市:江苏,32
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