Combined wind power speed increaser

Abstract

The invention relates to a combined wind power speed increaser, belonging to a part in a wind power generating unit. At present, the wind power speed increaser with high reliability and convenient maintenance does not exist. The speed increaser comprises an air cooling device, an oil supply filter device and a temperature control device. The speed increaser is characterized by also comprising a primary speed increase unit and at least two secondary speed increase units, wherein the air cooling device and the oil supply filter device are both arranged on the primary speed increase unit; the temperature control device is arranged on the secondary speed increase unit; the primary speed increase unit comprises a principle shaft, gear shafts and a big gear ring with a double helical tooth; theprinciple shaft is arranged on the big gear ring; the number of the gear shafts is the same with that of the secondary speed increase unit; the gear shafts are engaged with the big gear ring respectively; the secondary speed increase unit comprises a transmission shaft, a transmission gear set and an output shaft; the transmission shaft and the output shaft are both arranged on the transmission gear set; and the transmission shaft is connected with the corresponding gear shaft. The combined wind power speed increaser has reasonable structure design, high reliability, easy disassembly and assembly and easy maintenance.

Description

technical field [0001] The invention relates to a combined wind power speed-up box, which belongs to a part of a wind power generating set, and is mainly used in a high-power wind power generating set, such as a wind power generating set with a power of 2.5MW-10MW, and can even be applied in a wind power generating set with a power greater than 10MW. Among the wind turbines, it has the characteristics of high reliability, easy disassembly and assembly, and easy maintenance. Background technique [0002] The wind power gearbox is an important mechanical part of the wind power generating set. The main function of the wind power gearbox is to transmit the power generated by the wind rotor blades under the action of the wind to the generator, and make the generator get the corresponding speed, so as to realize power generation. generator function. Usually the speed of the wind wheel is very low, far below the speed required by the generator for power generation. The speed of th...

AI Technical Summary

Problems solved by technology

[0004] 1. Since wind resources are abundant in high mountains, wilderness, beaches, islands, etc., wind turbines must be installed at the outlets of high mountains, wilderness, beaches, islands, etc., which makes the natural environment of wind turbines poor and traffic inconvenient , which brings more difficulties to the transportation and installation of equipment

In the existing wind turbines, this type of integrated wind power gearbox is installed in the narrow space of the tower top cabin. Once the wind power gearbox fails, the maintenance of the wind power gearbox is very difficult, and it cannot It is necessary to disassemble the entire wind power speed-up box from the top of the tower for maintenance.

Because the volume and weight of this type of wind power speed-up box are very large, it is very difficult to disassemble the whole wind power speed-up box from the top of the tower. Only a special giant crane can be used to lift the wind power speed-up box on the top of the tower. On the ground, the wind power speed-up box is then repaired, which greatly increases the maintenance cost of the wind power speed-up box. The cost of each repair is as high as hundreds of thousands of yuan, and it will consume more human and material resources. Thereby increasing the burden on the gearbox manufacturer and increasing the production cost

[0005] 2. In the traditional one-stage planetary and two-stage parallel shaft cylindrical gear transmission gearbox, due to the structural characteristics of the helical inner ring gear, planetary gear, and sun gear meshing in sequence, the cylindrical roller bearing supporting the planetary gear is determined to be In addition to bearing the normal radial load, it also always bears the effect of torsional moment, which causes the cylindrical roller bearing to be eccentrically loaded, aggravates the wear of the bearing, and easily causes damage to the planetary gear. This part has the highest failure rate in the gearbox. link

Since the speed-up box is the main carrier for power transmission of wind turbines, under severe working conditions such as strong impact loads, the speed-up box is still the component with the highest failure rate in wind turbines. The loss caused by the downtime of the box failure has paid a large amount of compensation, making it difficult for some manufacturers to maintain production

Images