Manual rearview mirror with trapezoidal teeth having limiting function for locomotive

Abstract

The invention relates to the technical field of locomotive safety, and discloses a trapezoidal toothed manual rearview mirror with a limit function for locomotives. The manual rearview mirror with trapezoidal teeth with limit function for locomotives includes a rearview mirror body, and the rearview mirror body includes a lower mounting base and a stop rod, and the stop rod and the lower mounting base body are positioned by trapezoidal teeth , There is surface contact between the teeth, thereby limiting the relative rotation between the stop bar and the lower mounting seat. The present invention changes the positioning of the involute tooth shape to the positioning of the trapezoidal tooth. At this time, the teeth are in surface contact, which limits the relative rotation between the two, so that the mirror body will not shake after positioning. When adjusting the position of the rearview mirror, the position of the mirror body can be adjusted arbitrarily after the tooth portion of the stop bar is detached from the tooth portion of the lower mounting base by pressing the stop lever.

Description

technical field [0001] The invention relates to the technical field of locomotive safety, and more specifically, to a trapezoidal toothed manual rearview mirror with a limit function for locomotives. Background technique [0002] The rearview mirror is one of the driving safety components of the locomotive crew's field of vision. The crew must understand the surrounding environment of the locomotive when the train starts, turns, stops and travels. With the improvement of train speed, the safety of its operation is more and more important. [0003] Before driving, the flight attendant should adjust the position and angle of the rearview mirror. If the rearview mirror does not have a limit device, the mirror body will touch the window when adjusting the position and angle of the rearview mirror. During the driving process, due to the vibration of the vehicle, it is easy to cause the position and angle of the rearview mirror to change, causing the flight attendant to deviate f...

AI Technical Summary

Problems solved by technology

During the driving process, due to the vibration of the vehicle, it is easy to cause the position and angle of the rearview mirror to change, causing the flight attendant to deviate from the field of vision or observe inconveniently.

[0004] like figure 1 As shown, the existing locomotive rearview mirror stop rod and the lower mounting base are positioned using an involute tooth shape 101, with a tooth height of 1.8mm. When this positioning method is adopted, the teeth of the stop rod are relative to the teeth of the lower mounting base There is a line contact between them, and there is a certain relative rotation between the two, which will cause the mirror body to shake

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