CN205036793U - A compact high-power wind power gearbox load sharing structure - Google Patents

Abstract

The utility model discloses a compact high-power wind power gear box load balancing structure, which comprises a flange type double-row conical main bearing and a flexible pin component, wherein the inner ring of the flange type double-row conical main bearing is connected with a planet carrier and a hub through bolts, and the outer ring of the flange type double-row conical main bearing is connected with a wind wheel locking flange and a box body through bolts; the number of the flexible pin assemblies is consistent with that of the planet wheels of the primary planetary gear mechanism, each planet wheel is uniformly loaded by one flexible pin assembly, each flexible pin assembly consists of a flexible pin shaft and a pin sleeve which are matched, one end of each flexible pin shaft is fixedly inserted into the planet carrier and is in interference fit with the planet carrier, the other end of each flexible pin shaft extends towards the direction of the generator of the wind generating set to form a cantilever type structure, and the pin sleeve is in interference fit with the flexible pin shaft and supports the planet wheels. The utility model discloses a plurality of planetary gear all carry in the gearbox, improve the gear and bear the weight of, make the equal effect of carrying of gear box better, and then effectively improve the life of gear box.

Description

A compact high-power wind power gearbox load sharing structure

technical field

The utility model relates to the technical field of wind power generating set gear box load sharing, in particular to a compact high-power wind power gear box load sharing structure.

Background technique

It is known in the industry that in the transmission chain of the traditional wind turbine gearbox, the long main shaft and the sun gear are used to float. Although this method can improve the load of the gearbox, the floating load sharing of the sun gear is limited and the space is relatively large. This patented product is a load-sharing structure designed for high-power compact transmission chains. The flange-type double-row conical main bearing bears the radial force and bending moment transmitted from the hub, and the flexible pin assembly is used to make the planetary wheel float and load evenly. The combination of wheel floating load equalization improves the load equalization effect of the multi-planetary gear train and can effectively increase the life of the gearbox.

Contents of the invention

The purpose of this utility model is to overcome the deficiencies of the prior art, to provide a compact high-power wind power gearbox load sharing structure, to carry out load sharing on multiple planetary gears in the gearbox, to improve the gear load, and to make the gear box load sharing effect Better, thereby effectively improving the service life of the gearbox.

In order to achieve the above purpose, the technical solution provided by the utility model is: a compact high-power wind power gearbox load sharing structure, including flange-type double-row conical main bearings and flexible The pin assembly, wherein the planet carrier of the first-stage planetary gear mechanism in the gearbox is located between the hub of the wind power generating set and the inner ring of the flanged double-row conical main bearing, and the inner ring of the flanged double-row conical main bearing The outer ring of the flanged double-row conical main bearing is located on the wind wheel locking flange of the gearbox and the gearbox is connected to the wind turbine between the casings of the generator part, and are connected with the locking flange of the wind rotor and the casing through bolts; the number of the flexible pin assemblies is consistent with the number of planetary wheels of the first-stage planetary gear mechanism, and each planetary wheel is composed of A flexible pin assembly is used to equalize the load. Each flexible pin assembly is composed of a matching flexible pin shaft and a pin sleeve. One end of the flexible pin shaft is fixedly inserted on the planet carrier and is interference fit with the planet carrier. The other end of the flexible pin shaft Extending towards the direction of the generator of the wind power generating set, it forms a cantilever structure. The pin sleeve is in interference fit with the flexible pin shaft and supports the planetary wheels, so that each planetary wheel floats in parallel and the load is more uniform.

The sun gear of the first-stage planetary gear mechanism is connected to the output shaft of the sun gear to transmit power through a spline sleeve. To make the planetary gear evenly loaded.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. This load sharing structure does not use a long main shaft, but a flanged double-row conical main bearing, which bears the radial force and bending moment transmitted from the hub through the flanged double-row conical main bearing, and has a compact structure.

2. The load equalizing structure adopts flexible pin components to combine the floating of the planetary gear and the floating of the sun gear to equalize the load, so that the load of the multi-planetary gear system is more uniform, and the service life is effectively improved.

Description of drawings

Fig. 1 is a schematic diagram of the installation of the load sharing structure of the compact high-power wind power gearbox of the present invention.

Fig. 2 is a sectional view along A-A of Fig. 1 .

detailed description

Below in conjunction with specific embodiment the utility model is further described.

As shown in Figure 1 and Figure 2, the load sharing structure of the compact high-power wind power gearbox described in this embodiment includes flanged double-row conical main bearings and flexible pin assemblies respectively placed in the gearbox of the wind power generating set , wherein, the planet carrier 1 of the first-stage planetary gear mechanism in the gearbox is located between the hub 2 of the wind power generating set and the inner ring 301 of the flanged double-row conical main bearing, and the flanged double-row conical main bearing The inner ring 301 is connected with the planet carrier 1 and the hub 2 through bolts, and bears the radial force and bending moment transmitted from the hub 2. The outer ring 302 of the flanged double-row conical main bearing is located on the wind wheel locking flange 4 of the gearbox. It is connected with the gearbox between the casing 5 of the generator part of the wind power generating set, and is connected with the locking flange 4 of the wind wheel and the casing 5 through bolts; The 6 numbers are consistent, and each planetary wheel 6 is loaded equally by a flexible pin assembly, and each flexible pin assembly is composed of a matching flexible pin shaft 701 and a pin sleeve 702, and one end of the flexible pin shaft 701 is fixed and inserted On the planet carrier 1, it is interference fit with the planet carrier 1, and its other end extends toward the generator of the wind power generating set, forming a cantilever structure. The pin sleeve 702 is interference fit with the flexible pin shaft 701, and supports the planet wheel 6, when the two tangential forces of the ring gear 8 and the sun gear 9 of the first-stage planetary gear mechanism are applied to the planetary gear 6, the angular winding caused by the bending of the flexible pin shaft 701 on the planet carrier 1 can be The opposite direction comes from the bending of the pin bushing 702 at the other end of the flexible pin shaft 701 to offset the angle, so that each planetary wheel 6 floats in parallel, and the load on the planetary wheel 6 is more uniform.

In addition, the sun gear 9 and the sun gear output shaft 10 of the first-stage planetary gear mechanism in this embodiment are connected to transmit power through the spline sleeve 11. At the same time, the sun gear output shaft 10 is directly connected to the second-stage planetary gear mechanism in the gearbox. The planet carrier is connected, and the planetary gear 6 is evenly loaded through the floating of the sun gear, so as to improve the load equalizing effect of the multi-planetary gear train.

To sum up, this product is a load-sharing structure designed for high-power compact transmission chains. It has a compact and reliable structure. The flanged double-row conical main bearing bears the radial force and bending moment transmitted from the hub, and uses a flexible pin assembly. Combining the floating load sharing of the planetary gear and the floating load sharing of the sun gear can improve the load sharing effect of the multi-planetary gear system, thereby effectively improving the service life of the gearbox, and it is worth popularizing.

The implementation examples described above are only preferred embodiments of the present utility model, and are not intended to limit the scope of implementation of the present utility model, so all changes made according to the shape and principle of the present utility model should be covered by the scope of the present utility model. within the scope of protection.

Claims (2)

1. A compact high-power wind power gearbox load sharing structure, characterized in that: it includes flanged double-row conical main bearings and flexible pin assemblies that are respectively placed in the gearbox of the wind power generating set, wherein the gearbox The planetary carrier of the middle-stage planetary gear mechanism is located between the hub of the wind turbine and the inner ring of the flanged double-row conical main bearing, and the inner ring of the flanged double-row conical main bearing is connected to the planetary carrier and the hub through bolts , to withstand the radial force and bending moment transmitted from the hub, the outer ring of the flanged double-row conical main bearing is located between the wind wheel locking flange of the gearbox and the box body of the gearbox connected to the generator part of the wind turbine, It is connected with the locking flange of the wind wheel and the box through bolts; the number of flexible pin assemblies is consistent with the number of planetary wheels of the first-stage planetary gear mechanism, and each planetary wheel is equally loaded by a flexible pin assembly. Each flexible pin assembly is composed of a matching flexible pin shaft and a pin sleeve. One end of the flexible pin shaft is fixedly inserted on the planet carrier, and is interference fit with the planet carrier, and the other end extends toward the generator of the wind power generating set. , formed as a cantilever structure, the pin sleeve is in interference fit with the flexible pin shaft, and supports the planetary wheels, so that each planetary wheel floats in parallel, and the load is more uniform. 2. A compact high-power wind power gearbox load sharing structure according to claim 1, characterized in that: the sun gear of the first-stage planetary gear mechanism and the output shaft of the sun gear are connected to transmit power through a spline sleeve, and at the same time , the output shaft of the sun gear is directly connected with the planetary carrier of the second-stage planetary gear mechanism in the gearbox, and the planetary gears are evenly loaded through the floating of the sun gear.