Locomotive whistling system improvement device

Abstract

The invention relates to a locomotive whistling system. The locomotive whistling system comprises a high-pitch air whistle horn and a low-pitch electric whistle horn which are installed on a locomotive, and is characterized in that a positive electrode of the low-pitch electric whistle horn is connected with a secondary-side positive electrode of an isolated power supply converter, a negative electrode of the low-pitch electric whistle horn is connected with a secondary-side negative electrode of the isolated power supply converter, a grounding wire of the low-pitch electric whistle horn is grounded, a primary-side positive electrode of the isolated power supply converter is connected with a positive electrode of a power supply through a first change-over switch, a second change-over switch and a third change-over switch which are connected in parallel, a primary-side negative electrode of the isolated power supply converter is connected with a negative electrode of the power supply, a positive electrode of an electric control valve of the high-pitch air whistle horn is connected with the positive electrode of the power supply through the first change-over switch, the second change-over switch and the third change-over switch which are connected in parallel, a negative electrode of the electric control valve of the high-pitch air whistle horn is connected with the negative electrode of the power supply, and a grounding wire of the electric control valve of the high-pitch air whistle horn is grounded. The locomotive whistling system accesses the two-way change-over switches and the isolated power supply converter and is additionally provided with a low-pitch electric whistle horn, so that different types of whistle horns are selected to be used in different environments, and noise pollutions are effectively reduced.

Description

technical field [0001] The invention relates to an improved device for a locomotive whistle system. The design is based on the original whistle system circuit, and a bidirectional transfer switch is connected to the main line to realize the purpose of separately controlling the high-pitched bagpipe horn and the low-pitched electric whistle horn in different environments. Background technique [0002] The noise reduction of locomotive bagpipes is currently a key rectification project of the Railway Bureau. The whistle of the locomotive plays the role of warning or transmitting sound signals. Most locomotives use bagpipes to whistle. Because the working principle of locomotive bagpipes is to turn on the circuit by manually pressing the button switch, so that the electric control valve is triggered. The electric action is connected to the ventilation circuit to make the diaphragm in the bagpipe vibrate and make a sound. The circuit schematic diagram is as follows figure 1 As s...

AI Technical Summary

Problems solved by technology

The whistle of the locomotive plays the role of warning or transmitting sound signals. Most locomotives use bagpipes to whistle. Because the working principle of locomotive bagpipes is to turn on the circuit by manually pressing the button switch, so that the electric control valve is triggered. The electric action is connected to the ventilation circuit to make the diaphragm in the bagpipe vibrate and make a sound. The circuit schematic diagram is as follows figure 1 As shown, however, the size of the airflow passing through the sound-generating parts is not easy to control, so the sound of the bagpipes is particularly high-pitched and bright. Such a high-decibel sound of the bagpipes will bring great disturbance to the residents near the railway and seriously affect the quiet living environment of the residents. The key to pollution lies in the redesign and improvement of the existing whistle system circuit

Images