Railway brake valve with self-lubrication circulating action

• Main Authors: LI MOUKUI, XIAO WEIYUAN, AN HONG, ZHU YINGCHUN, LYU CHAO, WANG CHUNSHAN, YANG JIANPING, XIAO QIANYOU
• Format: Patent
• Language: English
• Published: 07.01.2015
• Subjects: ARRANGEMENTS OR DISPOSITIONS OF BRAKES OR OTHER RETARDINGAPPARATUS IN RAIL VEHICLES; BRAKES OR OTHER RETARDING APPARATUS PECULIAR TO RAILVEHICLES; PERFORMING OPERATIONS; RAILWAYS; TRANSPORTING

The utility model discloses a railway brake valve with a self-lubrication circulating action. The railway brake valve comprises a main valve component, a main piston rod, a slide valve and a main valve lower cap. A lubricating oil circulating device is arranged on the main piston rod which is internally provided with an oil channel. An oil outlet of the oil channel aligns to an oil inlet in the upper end face of the slide valve, thus the upper end face and a work face of the slide valve are communicated. According to the arrangement, the lubricating oil circulating device is added on the main piston rod, and the lubricating oil in the main valve lower cap is abstracted to the upper end face of the slide valve and then reaches to the work face through the oil inlet in the upper end face of the slide valve to generate oil films. The redundant lubricating oil returns to an oil sump of the main valve lower cap along two sides of the slide valve. In this way, the slide valve vertically moves in work to lubricate the slide valve side, and the slide valve pair is lubricated. So that the duration of the oil films is prolonged, slide abrasion is reduced, work environment of the slide valve pair is improved, and service life of the slide valve pair is prolonged.