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 manual rearview mirror with trapezoidal teeth having a limiting function for a locomotive. The manual rearview mirrorwith the trapezoidal teeth having the limiting function for the locomotive comprises a rearview mirror body, the rearview mirror body comprises a lower mounting base and a stop rod, the stop rod and the lower mounting base are positioned by adopting the trapezoidal teeth, and the teeth are in surface contact, thereby limiting the relative rotation between the stop rod and the lower mounting base.The manual rearview mirror provided by the invention has the advantages that involute profile positioning is changed to trapezoidal tooth positioning, and the teeth are in surface contact, thereby limiting the relative rotation between the stop rod and the lower mounting base so as to ensure that the mirror body can not shake after being positioned; and when the position of the rearview mirror isadjusted, the stop rod is pressed to enable the teeth of the stop rod to be separated from the teeth of the lower mounting base, and then, the position of the mirror body can be adjusted randomly.

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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