Heavy type speed changer cooling and lubricating system and cooling and lubricating method

Abstract

The invention discloses a heavy type speed changer cooling and lubricating system and a cooling and lubricating method. The heavy type speed changer cooling and lubricating system comprises an oil pump, a filter, a temperature control valve, a radiator, an oil discharging bolt, two oil spraying pipes and an oil spraying head. When the temperature control valve is closed, a temperature control valve oil inlet pipe is communicated with a temperature control valve oil outlet pipe; when the temperature control valve is opened, the temperature control valve oil inlet pipe is communicated with a cooling oil inlet pipe, and the cooling oil outlet pipe is communicated with the temperature control valve oil outlet pipe. An input end of the oil discharging bolt is connected with the temperature control valve oil outlet pipe; three output ends of the oil discharging bolt are respectively connected with the two oil spraying pipes and the oil spraying head. Both the two oil spraying pipes extend from a primary box to a secondary box; a plurality of spraying holes are formed in each oil spraying pipe. The temperature control valve is used for determining whether gear oil enters the radiator or not. According to the heavy type speed changer cooling and lubricating system and the cooling and lubricating method, the external radiator and oil pump forced lubricating are combined, so that the lubricating and cooling requirements of shaft teeth, bearings, sealing pieces, lubricating oil and the like under special complex working conditions are ensured; meanwhile, the heavy type speed changer cooling and lubricating system and the cooling and lubricating method have the advantages of simple structure, reliable performance, and remarkable cooling and lubricating effects.

Description

technical field

[0001] The invention relates to the field of heavy-duty vehicle transmissions, in particular to a cooling and lubricating system and a cooling and lubricating method for a heavy-duty transmission. Background technique

[0002] At present, the transmissions of domestic heavy-duty commercial vehicles are mostly manual transmissions, and most of them are cooled by driving air. However, the driving air cooling is greatly affected by the driving conditions of the vehicle, especially in mountainous conditions, where there are continuous long slopes, the driving speed of the vehicle is low, the air cooling effect of the transmission is poor, and the transmission is prone to overheating. When the transmission is overheated, the viscosity of the gear oil in the transmission will drop and carbonize, which will easily cause pitting and gluing of the shaft and gear parts, which will affect the service life of the transmission and reduce the reliability.

[0003] In addi...

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