Dispositivo de lubrificação para uma caixa de engrenagem, e, método de lubrificação para lubrificar uma caixa de engrenagem

摘要

In order to provide a lubricating device and lubricating method for a gearbox which does not take long to heat the lubricant oil and prevents the aeration of the lubricant oil due to the splashing thereof during the activation of the gearbox, the present invention provides a lubricating device for a gearbox comprising: a gearbox which includes an input shaft, a group of gears rotated by the rotation of the input shaft, and an output shaft rotated by the rotation of the group of gears, the rotation of the input shaft being speeded up and outputted to the output shaft via the group of gears; an oil storage chamber which stores lubricant oil for lubricating the gearbox; a lubricant oil circulating line which includes a pump and through which the lubricant oil stored in the oil storage chamber is supplied to the gearbox by the pump and then returned to the oil storage chamber; a bypass line which is provided in the oil lubricant circulating line and bypasses the gearbox; and a switching valve which is provided in the oil lubricant circulating line and switches a supply path of the lubricant between supplying the lubricant oil to the gearbox and supplying the lubricant oil to the bypass line.