CN215672568U

CN215672568U - Bearing assembly of hydraulic pitch control system of wind generating set

Info

Publication number: CN215672568U
Application number: CN202122022208.1U
Authority: CN
Inventors: 谢凯
Original assignee: Wuxi Xinyuan Electromechanical Precision Manufacturing Co ltd
Current assignee: Wuxi Xinyuan Electromechanical Precision Manufacturing Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-01-28
Anticipated expiration: 2031-08-26

Abstract

The utility model provides a bearing assembly of a hydraulic pitch system of a wind generating set, which comprises a hub, a web, blades, a base and an execution shaft, wherein the web is fixedly arranged on the surface of the hub, the blades are fixedly arranged at the bottom end of the hub, the base is fixedly arranged on the surface of the web, the execution shaft is movably connected with the base, a bearing sleeve and a butt-joint ring are sleeved on a shaft body of the execution shaft, the bearing sleeve and the butt-joint ring are adjacently arranged, and a fixing cylinder is arranged between the bearing sleeve and the butt-joint ring. Constitute lubricated external member through bearing housing and butt joint cover, and the ring channel that the inboard was seted up is favorable to placing of ball, wholly is favorable to the continuous output and the lubrication of lubricating oil, through the lubricated leakproofness of first sealing ring reinforcing bearing housing, avoids lubricating oil to flow, reaches the effect of avoiding lubricating oil to flow from the hookup location of axis body and bearing housing through the second sealing ring, through the lubricated effect of ball reinforcing lubricating oil to the executive spindle.

Description

Bearing assembly of hydraulic pitch control system of wind generating set

Technical Field

The utility model relates to the technical field of wind power generation, in particular to a bearing assembly of a hydraulic pitch system of a wind generating set.

Background

The variable-pitch wind generating set achieves the purposes of adjusting the generating power of the wind generating set and controlling the wind load by changing the pitch angle of the blades. The hydraulic pitch control technology is increasingly applied to pitch control type wind generating sets due to the advantages of high reliability, good dynamic response and the like.

For example, in the hydraulic pitch control system in CN204755199 of the present invention, the pitch control actuator is a slider-crank mechanism, the pin shaft penetrates through the eccentric holes of the inner and outer webs, and the inner and outer webs are connected to the inner ring of the pitch control bearing. When the variable pitch is operated, the actuator pushes and pulls the pin shaft, the pin shaft transmits driving force through the inner web and the outer web, and the inner ring of the variable pitch bearing is driven to rotate relative to the outer ring, so that the variable pitch operation is completed.

The bearing assembly can rotate rapidly when working, is easy to wear without protection, is not beneficial to injecting lubricating oil, is frequently replaced to influence the normal use of the generator, and is not beneficial to cost saving.

Therefore, a new wind generating set hydraulic pitch system bearing assembly is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that the existing bearing assembly rotates rapidly when working, is easy to wear without protection, is not beneficial to injecting lubricating oil, influences the normal use of a generator due to frequent replacement and is not beneficial to cost saving, and therefore, the bearing assembly of the hydraulic pitch system of the wind generating set is provided.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a wind generating set hydraulic pressure becomes oar system bearing subassembly, includes wheel hub, web, fan blade, base and execution axle, and the web is fixed to be set up on wheel hub's surface, and the fan blade is fixed to be set up in wheel hub's bottom position, and the base is fixed to be set up on the surface of web, execution axle and base swing joint, its characterized in that: the bearing housing and the butt joint ring are sleeved on the shaft body of the execution shaft, the bearing housing and the butt joint ring are arranged adjacently, a fixing cylinder is arranged between the bearing housing and the butt joint ring, the butt joint sleeve is arranged in the inner side of the bearing housing in an embedded mode, a shaft body cavity for the execution shaft to run through is formed in the inner sides of the bearing housing and the butt joint sleeve, a first sealing ring is fixedly sleeved on the outer side of the butt joint sleeve in a sleeved mode, a second sealing ring is arranged in the bearing housing in an embedded mode, balls are arranged in the bearing housing and in the embedded mode of the butt joint sleeve, and an oil injection cavity is formed in the surface fixing mode of the bearing housing.

Further preferred scheme: the bearing sleeve and the butt joint sleeve are sleeved, the butt joint sleeve is integrally arranged in a T-shaped sleeve, and one end of the butt joint sleeve is embedded into the bearing sleeve.

Further preferred scheme: the inboard of bearing housing and the outside surface of butt joint cover all fixedly seted up the ring channel, and the ring channel is seted up relatively each other.

Further preferred scheme: the first sealing ring integrally surrounds the butting sleeve, and one end of the first sealing ring is connected with the bearing sleeve.

Further preferred scheme: the second sealing ring is embedded into the outer end of the bearing sleeve, and the edges of the two ends of the second sealing ring are arranged in an arc-shaped concave manner.

Further preferred scheme: the balls are simultaneously embedded in the cavity formed between the bearing sleeve and the docking sleeve.

The utility model provides a bearing assembly of a hydraulic pitch control system of a wind generating set, which has the following beneficial effects:

according to the utility model, the bearing sleeve and the butt-joint sleeve form a lubricating sleeve, and the annular groove formed in the inner side is beneficial to placing the ball, so that the lubricating oil is beneficial to continuously outputting and lubricating the whole lubricating oil.

According to the utility model, the lubricating tightness of the bearing sleeve is enhanced through the first sealing ring, and the lubricating oil is prevented from flowing out.

According to the utility model, the effect of preventing the lubricating oil from flowing out of the connecting position of the shaft body and the bearing sleeve is achieved through the second sealing ring, and the lubricating effect of the lubricating oil on the actuating shaft is enhanced through the balls.

Drawings

FIG. 1 is a schematic view of the overall structure of the apparatus of the present invention.

FIG. 2 is an enlarged view of the structure of FIG. 1A of the apparatus of the present invention.

FIG. 3 is a sectional view showing the inner structure of the bearing housing of the present invention.

In FIGS. 1-3: 1. a hub; 2. a web; 3. a fan blade; 4. a base; 5. an execution shaft; 6. a bearing housing; 7. a docking ring; 8. a fixed cylinder; 9. butting sleeves; 10. a first seal ring; 11. a second seal ring; 12. a shaft cavity; 13. a ball bearing; 14. and (5) injecting an oil cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 3 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

please refer to fig. 1 to 3:

the embodiment provides a further preferred scheme of a hydraulic pitch control system bearing assembly of a wind generating set, which comprises a hub 1, a web 2, a fan blade 3, a base 4 and an execution shaft 5, wherein the web 2 is fixedly arranged on the surface of the hub 1, the fan blade 3 is fixedly arranged at the bottom end position of the hub 1, the base 4 is fixedly arranged on the surface of the web 2, the execution shaft 5 is movably connected with the base 4, a bearing sleeve 6 and a butt-joint ring 7 are sleeved on a shaft body of the execution shaft 5, the bearing sleeve 6 and the butt-joint ring 7 are adjacently arranged, a fixed cylinder 8 is arranged between the bearing sleeve 6 and the butt-joint ring 7, a butt-joint sleeve 9 is embedded in the inner side of the bearing sleeve 6, a shaft body cavity 12 for the execution shaft 5 to penetrate through is formed in the inner sides of the bearing sleeve 6 and the butt-joint sleeve 9, a first sealing ring 10 is fixedly sleeved in the outer side of the butt-joint sleeve 9, a second sealing ring 11 is embedded in the bearing sleeve 6, and balls 13 are embedded in the bearing sleeve 6 and the butt-joint sleeve 9, an oil injection cavity 14 is fixedly arranged on the surface of the bearing sleeve 6.

Further, bearing housing 6 and docking sleeve 9 are both to cup joint the setting, and docking sleeve 9 wholly is "T" type cover setting, and one end embedding is inside bearing housing 6.

Further, the annular groove has been seted up to the inboard of bearing housing 6 and the outside surface of butt joint sleeve 9 is all fixed, and the annular groove is seted up relatively each other, constitutes lubricated external member through bearing housing 6 and butt joint sleeve 9, and the annular groove that the inboard was seted up is favorable to placing of ball 13, wholly is favorable to the continuous output and the lubrication of lubricating oil.

Furthermore, the first sealing ring 10 integrally surrounds the butt joint sleeve 9, one end of the first sealing ring is connected with the bearing sleeve 6, and the lubricating tightness of the bearing sleeve 6 is enhanced through the first sealing ring 10, so that the lubricating oil is prevented from flowing out.

Further, second sealing ring 11 imbeds in the outer end position of bearing housing 6, and the both ends edge of second sealing ring 11 is the arc indent setting, reaches the effect of avoiding lubricating oil to flow from the hookup location of axis body and bearing housing 6 through second sealing ring 11.

Further, the balls 13 are simultaneously inserted into the cavity formed between the bearing sleeve 6 and the counter sleeve 9, and the lubricating effect of the lubricating oil on the actuating shaft 5 is enhanced by the balls 13.

The working principle is as follows: when the device is used, a plurality of balls 13 are installed in a cavity arranged between the butting sleeve 9 and the bearing sleeve 6, the butting sleeve 9 and the bearing sleeve 6 are fixedly sleeved, meanwhile, the first sealing ring 10 and the bearing sleeve 6 are connected and installed, lubricating oil is injected into the cavity between the butting sleeve 9 and the bearing sleeve 6 through the oil injection cavity 14, finally, the second sealing ring 11 is embedded in the outer end position of the bearing sleeve 6, after the bearing sleeve 6 and the butting sleeve 9 are integrally installed, the bearing sleeve 6 and the executing shaft 5 are sleeved, the butting ring 7, the bearing sleeve 6 and the executing shaft 7 are installed and fixed through the fixing barrel 8, and when the device is used, the added lubricating oil sequentially contacts the executing shaft 5 in real time under the rotating action of the balls 13 to lubricate the executing shaft.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a wind generating set hydraulic pressure becomes oar system bearing subassembly, includes wheel hub (1), web (2), fan blade (3), base (4) and execution axle (5), and web (2) are fixed to be set up on the surface of wheel hub (1), and the fixed bottom position that sets up at wheel hub (1) in fan blade (3), and base (4) are fixed to be set up on the surface of web (2), and execution axle (5) and base (4) swing joint, its characterized in that: bearing housing (6) and butt joint ring (7) have been cup jointed on the axis body of execution axle (5), bearing housing (6) and butt joint ring (7) adjacent setting, be provided with solid fixed cylinder (8) between bearing housing (6) and butt joint ring (7), the inboard embedding of bearing housing (6) is provided with butt joint cover (9), the inboard of bearing housing (6) and butt joint cover (9) all forms axle body chamber (12) that supply execution axle (5) to run through, first sealing ring (10) have been fixedly cup jointed in the outside of butt joint cover (9), the inside embedding of bearing housing (6) is provided with second sealing ring (11), the inside embedding of bearing housing (6) and butt joint cover (9) is provided with ball (13), the fixed surface of bearing housing (6) has been seted up and has been annotated oil pocket (14).

2. The wind generating set hydraulic pitch system bearing assembly according to claim 1, wherein: the bearing sleeve (6) and the butt joint sleeve (9) are sleeved, the butt joint sleeve (9) is integrally arranged in a T-shaped sleeve, and one end of the butt joint sleeve is embedded into the bearing sleeve (6).

3. The wind generating set hydraulic pitch system bearing assembly according to claim 1, wherein: and annular grooves are fixedly formed in the inner side of the bearing sleeve (6) and the outer side surface of the butt joint sleeve (9), and the annular grooves are formed relatively to each other.

4. The wind generating set hydraulic pitch system bearing assembly according to claim 1, wherein: the first sealing ring (10) wholly surrounds the butt joint sleeve (9), and one end of the first sealing ring is connected with the bearing sleeve (6).

5. The wind generating set hydraulic pitch system bearing assembly according to claim 1, wherein: the second sealing ring (11) is embedded into the outer end of the bearing sleeve (6), and the edges of the two ends of the second sealing ring (11) are arranged in an arc-shaped concave manner.

6. The wind generating set hydraulic pitch system bearing assembly according to claim 1, wherein: the balls (13) are simultaneously inserted into a cavity formed between the bearing sleeve (6) and the docking sleeve (9).