Spindle bearing lubricating system for wind driven generator

Abstract

The invention relates to a spindle bearing lubricating system for a wind driven generator. The spindle bearing lubricating system comprises a spindle bearing (1) and a bearing base (2) sleeved on the spindle bearing (1), wherein an oil inlet (21) and an oil return hole (22) are arranged on the bearing base (2); the oil inlet (21) is connected with an oil pump (4) through an oil transmission pipe (31); the oil pump (4) is connected with an oil tank (5) through an oil transmission pipe (32); the oil return hole (22) is connected with one end of an oil transmission pipe (33); and the other end of the oil transmission pipe (33) extends into the oil tank (5). With the adoption of the spindle bearing lubricating system for the wind driven generator, lubrication oil can be circularly used and flows back into the oil tank after a bearing is lubricated, so as to achieve sufficient lubrication and reduce pollution to an environment. A heater is arranged in the oil tank, so that when an environment temperature is lower, the heater heats the lubrication oil to ensure that the lubricating system normally operates; and when an oil level reaches an alarming value, the spindle bearing lubricating system can automatically alarm, so that the service life of the bearing is prolonged.

Description

【Technical field】 [0001] The invention relates to a lubricating system, in particular to a lubricating system for a main shaft bearing of a wind power generator. 【Background technique】 [0002] The main shaft of the wind turbine is lubricated by the independent bearing housing mostly with grease. The bearing itself does not have a sealing cover, and the grease is not easy to preserve. The low speed and heavy load of the fan main shaft is not easy to form an oil film. It is difficult to replace the lubricant and clean the bearing. The operating temperature range is small, and the fluidity of the grease is very poor at low temperature. Below -5°C, the grease cannot flow, and the grease squeezed out from the rolling elements of the bearing will not return to the raceway to participate in lubrication. For the automatic lubrication device, when the temperature is below -5°C, the injected grease can only lubricate near the injection point, it is difficult to realize the lack of gr...

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Problems solved by technology

[0002] The main shaft of the wind turbine is lubricated by the independent bearing housing mostly with grease. The bearing itself does not have a sealing cover, and the grease is not easy to preserve. The low speed and heavy load of the fan main shaft is not easy to form an oil film. It is difficult to replace the lubricant and clean the bearing. The operating temperature range is small, and the fluidity of the grease is very poor at low temperature. Below -5°C, the grease cannot flow, and the grease squeezed out from the rolling elements of the bearing will not return to the raceway to participate in lubrication. For the automatic lubrication device, when the temperature is below -5°C, the injected grease can only lubricate near the injection point, it is difficult to realize the lack of grease alarm device, it is difficult to discharge waste grease during grease lubrication, and new grease passes through Half a year's operation will become waste grease. If it cannot be removed in time, the residual waste grease will pollute the newly added grease, and the newly added grease will quickly become waste grease, and the wear of the bearing during operation If the debris cannot be discharged in time, the wear debris remaining in the grease will greatly reduce the lubricating function of the grease and have a great impact on the life of the bearing. The traditional bearing lubrication system uses an integrated bearing seat, which occupies a large space and is inconvenient to operate.

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