An automatic drainage device for a rail vehicle box body

Abstract

The invention relates to an automatic drainage device for a box body of a railway vehicle. The automatic drainage device comprises a valve seat, a valve deck, a piston and a pressure spring, and also comprises a water swelling block; the valve seat comprises a pair of valve seat internal drain holes, a water swelling block upper mounting cavity, a water swelling block water suction hole and a pair of valve seat external drain holes; the piston is in clearance fit with a valve seat inner cavity; the piston is provided with a water swelling block lower mounting cavity; the water swelling block is arranged in the water swelling block lower mounting cavity of the piston; the water swelling block is in contact with the water swelling block upper mounting cavity on the valve seat; two ends of the pressure spring are respectively in contact with the bottom surface on the inner side of the valve deck and the lower surface of the piston. The automatic drainage device can ensure the sealing property of the box body of the railway vehicle and can also timely drain water automatically when the water enters the box body, the box body is automatically closed after the drainage action is finished, and the sealing property of the box body is continuously maintained.

Description

Technical field [0001] The invention relates to the field of under-car power equipment for rail vehicles, in particular to an automatic drainage device for a rail vehicle box. Background technique [0002] Although my country's high-speed trains such as EMUs and inter-city high-speed trains have developed rapidly in recent years, express passenger trains are still the main force of railway passenger transport and will not change for a certain period of time. With the continuous improvement of economic development and people's living standards, especially the deepening of the people-oriented service concept, passengers have continuously increased their requirements for the comfort of riding railway passenger cars. This comfort is embodied in the appropriate temperature inside the car and sufficient air circulation. All of this requires the normal operation of various electrical equipment in the car to achieve. Therefore, the stability requirements of the auxiliary power equipment...

AI Technical Summary

Problems solved by technology

Traditional drains are of the screw plug type (see Figure 8 ) and felt pad (see Figure 9 ), these two forms have shortcomings: the screw plug type can only be manually opened to realize drainage when water ingress is found during parking maintenance. There are great potential safety hazards; the felt pad type has been slightly improved, and it can perform infiltration and drainage of the water in the box during operation, but when the water inflow is large, the drainage effect is too slow

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