CN101705916B - Transmission system of wind power generator - Google Patents

Abstract

The invention relates to a wind power generator, in particular to a transmission system of a wind power generator. The invention solves the problems of difficult maintenance, heavy weight, large deformation and easy damage caused by an unreasonable structure of the transmission system of the traditional wind power generator. The transmission system comprises a drive sleeve fixed on a cabin base, wherein at least one set of hub bearing is sleeved on an outer wall at one side of the drive sleeve, a hub with a brake is sleeved on an outer cylinder surface of the hub bearing , the hub is providedwith a blade, the other side of the drive sleeve is fixed with a drive mechanism, the drive sleeve is internally provided with a floating shaft, and two ends of the floating shaft are respectively connected with the hub and the drive mechanism. By improving the transmission system of the prior wind power generator, the invention not only has the advantages of convenient maintenance, light weight,high intensity, low error ratio, convenient installation and low cost, but also greatly improves the transmission performance, therefore, use requirements of blowers with different power levels are satisfied.

Description

Wind turbine drive train

FIELD

[0001] The present invention relates to a wind power generator, in particular to a wind turbine drive train. Background technique

[0002] is a wind turbine converts wind power machine, the conventional wind power generator of mechanical energy comprises general direct drive wind turbine and the fan, which drive train includes a bearing housing mounted on the nacelle base, for supporting the bearing seat is fixed spindle bearing, one end of the main shaft is fixed to the wheel hub with the brake disc, the bladed hub, the other end of the main shaft direct drive wind turbine nacelle is connected to the fixed base direct drive generator, the other end of the common shaft fan connecting a main gearbox and the main gearbox through a floating torque arm mounted on the nacelle base end of the main gearbox output is connected to the nacelle fixed base ordinary generator. Transmission works using wind power generator driven by the wind blades to rotate, thereby driving the rotation of the hub and the spindle, the other end of the direct drive shaft connected to a generator or indirectly connected to the common generator working at a spindle drive; wind generator most of the drive train components are coupled with the base of the nacelle, and the spindle is borne not only subjected to bending load and torque load, this design results in the presence of difficult maintenance, heavy weight, and large deformation problems easily damaged drive system, in order to overcome such question, people wind turbine drive train of a variety of improvements, but still not solve the problem fundamentally.

SUMMARY

[0003] The transmission system of the present invention to solve the conventional wind power generator due to the structure caused by an irrational difficult maintenance, heavy weight, and large deformation easily damaged problem, a stable performance of the drive train of the wind turbine.

[0004] The present invention adopts the following technical solution: the drive train of the wind turbine, a nacelle comprising a base fixed to the drive sleeve, the side wall of the outer jacket of the drive sleeve with at least a hub bearing, the outer bearing hub a cylindrical surface with a brake cover has a hub, the hub carrying blades, the other side is fixed to the drive sleeve and a drive mechanism equipped with floating bushing driving shaft, both ends of the floating shaft are connected to the hub and the drive mechanism. The drive mechanism according to the present invention is a conventional structure, there are various deformed structures, known to those of skill readily achieved. In operation, the blades rotate driven by the wind, so as to drive the hub and the floating shaft is rotated, the drive mechanism is connected to the floating shaft work of the floating shaft driven, in this process, since the floating shaft is not subjected to bending loads, is only subjected to torque load, the drive sleeve is only subjected to the hub, bending load drive mechanism, not subjected to torque load, thus avoiding the existing wind turbine drive train difficult maintenance, heavy weight, and large deformation problems easily damaged.

One end of the rotor shaft and a floating [0005] The drive mechanism is a direct drive generator, a direct drive generator with a stator fixed to the drive sleeve via a bearing, a direct drive generator rotor is supported by a bearing on a drive sleeve, a direct drive generator connection, so that a direct drive generator rotor shaft due to the action of the floating effect rotation, thus completing the power generation operation, and reliable and is not easily damaged.

[0006] The main gearbox by a drive mechanism and the input terminal of the floating shaft and connected at one end thereof to the main common generator input connected to the output growth composition, the stator of the generator is fixed to the common base of the nacelle, by the main body speed detector is fixed to the drive sleeve, the rotational speed of the main gearbox expanded, so as to realize the power requirements of the generator by rotating the common shaft floating, the growth rate and the primary drive sleeve rigidly coupled with, the main growth solution floating mount is deformed large.

[0007] The invention of the original drive train of the wind turbine has been improved, so that the drive sleeve and the floating shaft are subjected to torque loads and bending loads, and the primary growth rate coupled with a rigid drive sleeve, not only easy maintenance , light weight, high strength and advantages of the failure rate, easy installation and low cost advantages, but also a good transmission performance improved to meet the existing requirements of different power levels of the fan.

BRIEF DESCRIPTION

[0008] FIG. 1 is a schematic structure of a conventional system of the wind generator of the present invention;

[0009] Fig 2 a schematic structural diagram of another conventional driving mechanism of the present invention, the system of the wind turbine.

[0010] FIG: 1- nacelle base drive sleeve 2-, 3- wheel bearings, brakes 4-, 5- hub, 6- floating shaft, direct drive generators 7-, 8- main gearbox, 9 - general generator, 10 bracket, 11 bearings.

detailed description

[0011] The wind turbine drive train, comprising a base fixed to the nacelle of a drive sleeve 2, an outer side wall of the drive sleeve sleeve 2 has at least a wheel hub bearing 3, the hub 3 bearing sleeve has an outer cylindrical surface 4 with brake wheel hub 5, a hub with blades 5, the other side of the sleeve 2 is fixed to the drive mechanism and the drive sleeve 2 equipped with floating drive shafts 6, 6 are two ends of the floating shaft and the hub 5 and the driving mechanism connection. Driving means for the direct drive generator 7, 7 direct drive generator 2 the stator and the drive sleeve 11 by means of a fixed bearing, a direct drive generator rotor 7 is supported through a bearing 11 on the drive sleeve 2, a direct drive generator 7 the rotor shaft 6 and the floating - terminal; drive mechanism from its input terminal and the floating shaft 6 - the main gearbox 8 and the common terminal connected to the input terminal of the main generator up gear 8 connected to the output terminal 9 that ordinary power stator 9 is fixed to the base 1 on the nacelle, gearbox main body 8 is fixed to the drive sleeve 2. Specific implementation, the number of wheel bearing 3 is two, then the driving force of the radial sleeve 2 is subjected is greatly reduced, improving the safety factor while saving material; floating shaft end of the hub 56 by the flowers bond, the other end of the input terminal of the floating main shaft 6 of the gearbox 8 or direct drive generator rotors by a splined connection, drive sleeve base 2 is fixed to the nacelle between a bracket 10, the drive sleeve 2 axis of the base plane is located parallel to the nacelle, direct drive generator stator 7 and the drive sleeve and the drive sleeve 2 is fixed directly or by welding two integrally connected.

Claims (3)

1. 1. A drive train for a wind turbine, wherein: the base comprises a drive sleeve fixed to the nacelle on the O (1)), the drive sleeve (¾ a side wall of the outer sleeve, at least a hub bearing (3 ), wheel bearings (¾ outer cylindrical surface of the sleeve has a hub with a brake (5), the other side of the hub (¾ bladed on, the drive sleeve O) is fixed to a drive mechanism and drive bushing O) equipped with floating shaft (6), both ends of the floating shaft (6) respectively (¾ and a drive mechanism connected to the hub.
2. The drive train of the wind generator of claim 1, wherein: the drive mechanism is a direct drive generator (7), a direct drive generator (7) and the drive sleeve stator O) is fixed, direct drive a generator rotor (7) by another bearing (11) supported on the drive sleeve (upper ¾, (6) direct drive generator (7) and the floating shaft rotor - terminal.
3. 3. The drive system of claim 12 or wind power generator according to claim, characterized in that: the number of wheel bearings (3) is two.