Oil seal cooling device applied to vent hole of gearbox

Abstract

The invention discloses an oil seal cooling device applied to a vent hole of a gearbox. The oil seal cooling device comprises a installing column internally provided with a through hole, the through hole of the installation column communicates with the vent hole of the gearbox, the through hole of the installation column is a variable-diameter type pore passage, a caliber of the upper part of the through hole is large, an insert is arranged in the through hole of the installing column from the hole opening at the upper part, and the insert is clamped in the middle of the through hole of the installing column; and the insert is of a cover-shaped structure, the top surface of the insert is sealed, exhaust holes are formed in the periphery of the bottom of the insert, an exhaust gap is reserved between the insert and the hole wall of the installing column, the installing column is used for connecting the interior of the gearbox with external atmosphere, the high-temperature oil steam inside the gearbox is discharged, and providing an oil gas drainage channel; and the function of the insert is that a flowing path of oil gas is changed, the oil gas flowing distance is prolonged, the oil gas temperature is fully reduced, and the oil gas is fully condensed and then flows back to the gearbox. According to the oil seal cooling device, split type machining and combining are adopted, the structure is compact, the oil leakage prevention effect is obvious.

Description

technical field [0001] The invention belongs to the field of gearbox structure design, and relates to an oil seal cooling device applied to a vent hole of a gearbox. Background technique [0002] When the gearbox is designed, there will be a channel connecting the inside of the gearbox with the outside atmosphere, called a vent hole, whose function is to balance the air pressure inside and outside the gearbox, so as to prevent the oil seal from being damaged due to premature aging due to excessive air pressure in the box. [0003] When the gearbox works under high-speed and heavy-load conditions, the high-speed rotating gears throw the oil to the inner wall of the gearbox, and the loss of gear meshing is all converted into heat, resulting in high temperature in the box, and the gear oil generates steam, which fills the box. The space will increase the pressure in the box, and the oil vapor and splashed oil will flow out through the vent hole, forming oil stains or long-term ...

AI Technical Summary

Problems solved by technology

[0004] For oil leakage faults, the common practice of major domestic and foreign manufacturing companies is to install a vent plug at the vent hole of the gearbox, but only through the vent plug can not achieve oil sealing and cooling well, so it is necessary to install a vent plug on the vent hole. If the structure of the ventilation plug is too complicated, the processing cost will be very high.

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