Self-lubricating fan variable pitch bearing

Abstract

The utility model discloses a self-lubricating type fan variable pitch bearing which comprises a fan variable pitch bearing body and a U-shaped clamping plate, the periphery of the fan variable pitch bearing body is sleeved with the U-shaped clamping plate, a ball lubricating mechanism is installed at the upper end of the U-shaped clamping plate through a screw, a lubricating oil conveying mechanism is connected to the outer end of the ball lubricating mechanism through a flange, and the lubricating oil conveying mechanism is connected with the fan variable pitch bearing body. Lubricating oil can be conveyed into the ball lubricating mechanism and the outer side lubricating mechanism through the lubricating oil conveying mechanism, so that the lubricating oil can be effectively lubricated through the ball lubricating mechanism and the outer side lubricating mechanism; the lubricating oil can be permeated and added into the ball lubricating hole of the bearing inner ring shell, so that the roller between the inner parts of the bearing inner ring shell and the bearing outer ring shell can be effectively lubricated, the friction damage caused by the rolling of the roller in an unlubricated state is avoided, and the overall service life is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan variable pitch bearing technical field, concretely relates to a self -lubricating formula's fan variable pitch bearing. BACKGROUND

[0002] Fan variable pitch bearing refers to the bearing installed between the wind turbine blade and the hub, mainly functions to connect the rotor hub and the rotor blade, control the wind angle of the blade and the rotating speed of the wind wheel, thereby adjusting the output power of the wind turbine generator, and ensuring the stable operation of the wind turbine under various wind speed conditions.

[0003] The existing Chinese patent CN213808478U discloses a kind of three-row cylindrical roller variable pitch bearing of independent variable pitch of wind turbine generator unit on July 27, 2021, including inner ring and outer ring, two rows of axial rollers for bearing axial force and a row of radial rollers for bearing radial force are arranged between inner ring and outer ring, axial roller and radial roller are installed between inner ring and outer ring with interference fit, and the interference amount of axial roller is greater than the interference amount of radial roller.

[0004] However, the above-mentioned fan variable pitch bearing cannot be lubricated in real time during use, so that the rollers of the fan variable pitch bearing are prone to wear and damage during long-term use, and there is a lack of corresponding lubricating structure, so that the corresponding lubrication cannot be carried out during use. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of self-lubricating formula's fan variable pitch bearing to solve the above-mentioned fan variable pitch bearing in the above-mentioned background art in use, cannot be lubricated in real time, so that the rollers of the fan variable pitch bearing are prone to wear and damage during long-term use, and there is a lack of corresponding lubricating structure, so that the corresponding lubrication cannot be carried out during use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of self-lubricating formula's fan variable pitch bearing, including fan variable pitch bearing body and U type clamping plate, the circumferential side of fan variable pitch bearing body is sleeved with U type clamping plate, the upper end screw of U type clamping plate is installed with ball lubricating mechanism, the outer end flange of ball lubricating mechanism is connected with oil delivery mechanism, the outer end of oil delivery mechanism is located on U type clamping plate and is installed with outside lubricating mechanism;

[0007] The ball lubricating mechanism includes lubricating sleeve, outside ear plate, U-shaped delivery pipe, lubricating cotton pad and lubricating hole, the both ends of the corner of lubricating sleeve are fixedly connected with outside ear plate, the inside of lubricating sleeve is sleeved with lubricating cotton pad, the inner end of lubricating sleeve is provided with lubricating hole in the middle, the outer end of lubricating sleeve is fixedly connected with U-shaped delivery pipe in the middle, the flange of U-shaped delivery pipe is connected on oil delivery mechanism, and the lubricating sleeve is fixedly connected on U-shaped clamping plate through outside ear plate.

[0008] The oil delivery mechanism comprises a receiving shunt and an outer shunt, both ends of the receiving shunt are fixedly connected with the outer shunt, the outer shunt is connected on the outer lubricating mechanism through screw installation, and the inner end flange of the receiving shunt is connected on the ball lubricating mechanism.

[0009] The outer lubricating mechanism comprises connecting ear plates, a lubricating cotton sleeve, a U-shaped wrapping cover and a sawtooth lubricating cavity, the inner end sides of the U-shaped wrapping cover are fixedly connected with the connecting ear plates, the inside of the U-shaped wrapping cover is provided with the sawtooth lubricating cavity, the inner side of the sawtooth lubricating cavity is provided with the lubricating cotton sleeve, and the U-shaped wrapping cover is connected on the U-shaped clamping plate through the connecting ear plates.

[0010] The fan variable pitch bearing body comprises a bearing inner ring shell, a ball lubricating hole, a bearing sleeve cavity and a bearing outer ring shell, the inside of the bearing inner ring shell is provided with the bearing sleeve cavity, the outer end circumferential side of the bearing inner ring shell is rotatably provided with the bearing outer ring shell, the inside of the bearing inner ring shell and the bearing outer ring shell is provided with a roller, the outer end inner side of the bearing inner ring shell is provided with the ball lubricating hole, the bearing outer ring shell is engaged with an external gear, and the bearing inner ring shell is fixedly connected on the fan rack.

[0011] The lubricating sleeve cover of the ball lubricating mechanism is correspondingly installed in the outer end hole of the U-shaped clamping plate.

[0012] The lubricating sleeve cover is correspondingly and abuttingly connected with the ball lubricating hole of the fan variable pitch bearing body through the lubricating outlet hole.

[0013] The oil delivery mechanism is connected with an external lubricating oil supply pump.

[0014] Due to the adoption of the above-mentioned technology, the present application has the following beneficial effects:

[0015] 1. In the present application, the ball lubricating mechanism is arranged to effectively deliver lubricating oil for self-lubrication, the lubricating sleeve cover of the ball lubricating mechanism is provided with a lubricating cotton pad inside, the lubricating cotton pad can absorb lubricating oil and seep lubricating oil for lubrication, the lubricating outlet hole is arranged in the middle of the inner end of the lubricating sleeve cover, the lubricating oil seeped by the lubricating cotton pad can be seeped out through the lubricating outlet hole for lubrication, the U-shaped delivery pipe is fixedly connected to the middle of the outer end of the lubricating sleeve cover, the U-shaped delivery pipe is flange-connected to the oil delivery mechanism, and the U-shaped delivery pipe can deliver the lubricating oil delivered by the oil delivery mechanism to the lubricating sleeve cover, so that the lubricating oil can be absorbed by the lubricating cotton pad for storage and seepage self-lubrication.

[0016] 2. The utility model discloses a lateral lubricating mechanism structure is set up to can lubricate outside, and the U type package cover of lateral lubricating mechanism can receive the lubricating oil that lubricating oil delivery mechanism delivered through the area of sawtooth lubricating cavity, and the inside of sawtooth lubricating cavity is located on the U type package cover and is installed with lubricating cotton cover, and lubricating cotton cover can absorb lubricating oil, thereby when bearing outer ring shell passes through the inside recess of lubricating cotton cover, then can receive the exuding lubricating oil of lubricating cotton cover, thereby can effectively lubricate. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic view of a self-lubricating fan variable pitch bearing of the utility model;

[0018] Figure 2 It is a lubricating oil delivery mechanism, lateral lubricating mechanism and ball lubricating mechanism combined structure schematic view of a self-lubricating fan variable pitch bearing of the utility model;

[0019] Figure 3 It is a ball lubricating mechanism side edge cross section structure schematic view of a self-lubricating fan variable pitch bearing of the utility model;

[0020] Figure 4 It is a lateral lubricating mechanism and lubricating oil delivery mechanism combined structure schematic view of a self-lubricating fan variable pitch bearing of the utility model;

[0021] Figure 5 It is a U type clamping plate, ball lubricating mechanism and lateral lubricating mechanism combined structure schematic view of a self-lubricating fan variable pitch bearing of the utility model;

[0022] Figure 6 It is a fan variable pitch bearing body structure schematic view of a self-lubricating fan variable pitch bearing of the utility model.

[0023] In the drawing: 1, fan variable pitch bearing; 11, bearing inner ring shell; 12, ball lubricating hole; 13, bearing sleeve cavity; 14, bearing outer ring shell; 2, ball lubricating mechanism; 21, lubricating cover; 22, lateral lug; 23, U type delivery pipe; 24, lubricating cotton pad; 25, lubricating hole; 3, lubricating oil delivery mechanism; 31, receiving shunt pipe; 32, lateral branch pipe; 4, lateral lubricating mechanism; 41, connecting lug; 42, lubricating cotton cover; 43, U type package cover; 44, sawtooth lubricating cavity; 5, U type clamping plate. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model.

[0025] Embodiment one

[0026] With reference to Figures 1-6 A self-lubricating fan variable pitch bearing, comprising a fan variable pitch bearing body 1 and a U-shaped clamping plate 5, the U-shaped clamping plate 5 is sleeved on the periphery of the fan variable pitch bearing body 1, the U-shaped clamping plate 5 can be clamped on the periphery of the fan variable pitch bearing body 1, a ball lubricating mechanism 2 is screw-mounted on the upper end of the U-shaped clamping plate 5, the ball lubricating mechanism 2 can be positioned and placed on the U-shaped clamping plate 5 and can lubricate the fan variable pitch bearing body 1, an oil lubrication conveying mechanism 3 is flange-connected to the outer end of the ball lubricating mechanism 2, an outer side lubricating mechanism 4 is installed on the U-shaped clamping plate 5 at the outer end of the oil lubrication conveying mechanism 3, the oil lubrication conveying mechanism 3 can convey lubricating oil to the ball lubricating mechanism 2 and the outer side lubricating mechanism 4 respectively, so that the ball lubricating mechanism 2 and the outer side lubricating mechanism 4 can effectively lubricate;

[0027] The ball lubricating mechanism 2 comprises a lubricating sleeve 21, outer side ear plates 22, a U-shaped conveying pipe 23, a lubricating cotton pad 24 and a lubricating outlet hole 25, the outer side ear plates 22 are fixedly connected to both end corners of the lubricating sleeve 21, the lubricating sleeve 21 can be placed on the U-shaped clamping plate 5 through the outer side ear plates 22, the lubricating cotton pad 24 is sleeved in the interior of the lubricating sleeve 21, the lubricating cotton pad 24 can absorb lubricating oil and can seep lubricating oil, the lubricating outlet hole 25 is formed in the middle of the inner end of the lubricating sleeve 21, the lubricating oil seeped by the lubricating cotton pad 24 can seep out through the lubricating outlet hole 25, the U-shaped conveying pipe 23 is fixedly connected to the middle of the outer end of the lubricating sleeve 21, the U-shaped conveying pipe 23 is flange-connected to the oil lubrication conveying mechanism 3, the U-shaped conveying pipe 23 can convey the lubricating oil conveyed by the oil lubrication conveying mechanism 3 to the lubricating sleeve 21, so that the lubricating oil can be absorbed by the lubricating cotton pad 24 and stored to seep out for self-lubrication;

[0028] The lubricating sleeve 21 corresponds to the ball lubricating hole 12 of the fan variable pitch bearing body 1 through the lubricating outlet hole 25 and is attached, so that the lubricating oil can be effectively conveyed for self-lubrication.

[0029] The utility model discloses, the lubricating cover 21 of ball lubricating mechanism 2 is installed in the outer end hole of U type clamping plate 5 correspondingly, and this can be installed and place correspondingly.

[0030] The utility model discloses, fan variable pitch bearing body 1 includes bearing inner ring casing 11, ball lubrication hole 12, bearing sleeve cavity 13 and bearing outer ring casing 14, the inside of bearing inner ring casing 11 is set up bearing sleeve cavity 13, and bearing inner ring casing 11 passes through the area of bearing sleeve cavity 13, can be fixedly connected on the fan frame by the way of thermal expansion and cold shrink, and the outer end circumferential side of bearing inner ring casing 11 is rotatably installed with bearing outer ring casing 14, and the inside between bearing inner ring casing 11 and bearing outer ring casing 14 is installed with roller, and bearing outer ring casing 14 can rotate in the circumferential side of bearing inner ring casing 11 through the roller, and the outer end inboard of bearing inner ring casing 11 is set up ball lubrication hole 12, can receive the exuding lubricating oil of ball lubricating mechanism 2, and this can be self-lubricating to roller, and bearing outer ring casing 14 is engaged with external gear, and external gear can drive bearing outer ring casing 14 to drive in transmission.

[0031] The utility model discloses, oil delivery mechanism 3 is connected with external lubricating oil supply pump, can receive the lubricating oil of external lubricating oil supply pump delivery.

[0032] The utility model discloses, oil delivery mechanism 3 includes receiving shunt pipe 31 and outside branch pipe 32, and the both ends of receiving shunt pipe 31 are fixedly connected with outside branch pipe 32, and the lubricating oil in receiving shunt pipe 31 can be delivered to outside branch pipe 32, and outside branch pipe 32 is connected on outside lubricating mechanism 4 through screw mounting, and outside branch pipe 32 can deliver lubricating oil to outside lubricating mechanism 4, and the inner end flange of receiving shunt pipe 31 is connected on ball lubricating mechanism 2, and receiving shunt pipe 31 can deliver lubricating oil to ball lubricating mechanism 2.

[0033] Example two

[0034] Refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 And Figure 6A self-lubricating fan variable pitch bearing, compared with the first embodiment, the outer lubricating mechanism 4 comprises a connecting lug plate 41, a lubricating cotton sleeve 42, a U-shaped wrapping cover 43 and a sawtooth lubricating cavity 44, the inner ends of the U-shaped wrapping cover 43 are fixedly connected with the connecting lug plates 41, the U-shaped wrapping cover 43 is installed and connected on the U-shaped clamping plate 5 through the connecting lug plates 41, so that corresponding installation and connection can be realized, the sawtooth lubricating cavity 44 is arranged in the U-shaped wrapping cover 43, the U-shaped wrapping cover 43 can receive the lubricating oil delivered by the oil delivery mechanism 3 through the area of the sawtooth lubricating cavity 44, the lubricating cotton sleeve 42 is installed on the U-shaped wrapping cover 43 on the inner side of the sawtooth lubricating cavity 44, and the lubricating cotton sleeve 42 can absorb the lubricating oil, so that the lubricating oil exuded by the lubricating cotton sleeve 42 can be received when the bearing outer ring shell 14 passes through the inner groove of the lubricating cotton sleeve 42, thereby achieving effective lubrication.

[0035] Working principle: in use, the bearing outer ring shell 14 of the fan variable pitch bearing body 1 can rotate on the periphery of the bearing inner ring shell 11, the bearing outer ring shell 14 can be lubricated by the lubricating oil exuded on the lubricating cotton sleeve 42 when rotating through the lubricating cotton sleeve 42 on the inner side of the outer lubricating mechanism 4, so that the bearing outer ring shell 14 can be effectively lubricated, the bearing inner ring shell 11 of the fan variable pitch bearing body 1 is installed on the fan rack through the bearing sleeve cavity 13, so that effective and stable placement can be realized, the oil delivery mechanism 3 can deliver the lubricating oil to the ball lubricating mechanism 2 and the outer lubricating mechanism 4 respectively, so that the ball lubricating mechanism 2 and the outer lubricating mechanism 4 can be effectively lubricated, the ball lubricating mechanism 2 can add the lubricating oil to the ball lubricating hole 12 of the bearing inner ring shell 11 through the lubricating cotton pad 24 at the lubricating hole 25, so that the rollers between the bearing inner ring shell 11 and the bearing outer ring shell 14 can be effectively lubricated, frictional damage caused by the rolling of the rollers in the non-lubricated state is avoided, and the overall service life is effectively improved.

[0036] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

[0037] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to be used to limit the scope of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art to which this application belongs. The singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise.

Claims

1. A self-lubricating wind turbine variable pitch bearing comprising a wind turbine variable pitch bearing body (1) and a U-shaped clamp plate (5), characterized in that: The fan variable pitch bearing body (1) is sleeved with a U-shaped clamping plate (5) on the side, the upper end of the U-shaped clamping plate (5) is screw-mounted with a ball lubricating mechanism (2), the outer end flange of the ball lubricating mechanism (2) is connected with an oil delivery mechanism (3), and the outer end of the oil delivery mechanism (3) is provided with an outer lubricating mechanism (4) on the U-shaped clamping plate (5). The ball lubricating mechanism (2) comprises a lubricating sleeve (21), an outer ear plate (22), a U-shaped delivery pipe (23), a lubricating cotton pad (24) and a lubricating hole (25), the two end corners of the lubricating sleeve (21) are fixedly connected with the outer ear plate (22), the inside of the lubricating sleeve (21) is sleeved with the lubricating cotton pad (24), the inner end of the lubricating sleeve (21) is provided with the lubricating hole (25) in the middle, the outer end of the lubricating sleeve (21) is fixedly connected with the U-shaped delivery pipe (23) in the middle, the U-shaped delivery pipe (23) is flange-connected on the oil delivery mechanism (3), and the lubricating sleeve (21) is fixedly connected on the U-shaped clamping plate (5) through the outer ear plate (22).

2. A self-lubricating pitch bearing for a wind turbine according to claim 1, characterized in that: The oil delivery mechanism (3) comprises a receiving shunt pipe (31) and an outer shunt pipe (32), the two ends of the receiving shunt pipe (31) are fixedly connected with the outer shunt pipe (32), the outer shunt pipe (32) is screw-connected on the outer lubricating mechanism (4), and the inner end flange of the receiving shunt pipe (31) is connected on the ball lubricating mechanism (2).

3. A self-lubricating pitch bearing for a wind turbine according to claim 2, characterized in that: The outer lubricating mechanism (4) comprises a connecting ear plate (41), a lubricating cotton sleeve (42), a U-shaped wrapping cover (43) and a sawtooth lubricating cavity (44), the inner ends of the U-shaped wrapping cover (43) are fixedly connected with the connecting ear plate (41) on both sides, the inside of the U-shaped wrapping cover (43) is provided with the sawtooth lubricating cavity (44), the inner side of the sawtooth lubricating cavity (44) is provided with the lubricating cotton sleeve (42) on the U-shaped wrapping cover (43), and the U-shaped wrapping cover (43) is connected on the U-shaped clamping plate (5) through the connecting ear plate (41).

4. The self-lubricating wind turbine pitch bearing of claim 1, wherein: The fan variable pitch bearing body (1) comprises a bearing inner ring shell (11), a ball lubricating hole (12), a bearing sleeve cavity (13) and a bearing outer ring shell (14), the inside of the bearing inner ring shell (11) is provided with the bearing sleeve cavity (13), the outer end of the bearing inner ring shell (11) is rotatably installed with the bearing outer ring shell (14) on the side, the inside of the bearing inner ring shell (11) and the bearing outer ring shell (14) is installed with a roller, the outer end inner side of the bearing inner ring shell (11) is provided with the ball lubricating hole (12), the bearing outer ring shell (14) is engaged with an external gear, and the bearing inner ring shell (11) is fixedly connected on a fan rack.

5. The self-lubricating wind turbine pitch bearing of claim 1, wherein: The lubricating sleeve (21) of the ball lubricating mechanism (2) is correspondingly installed in the outer end hole of the U-shaped clamping plate (5).

6. A self-lubricating pitch bearing for a wind turbine according to claim 5, characterized in that: The lubricating sleeve (21) is correspondingly and closely combined with the ball lubricating hole (12) of the fan variable pitch bearing body (1) through the lubricating hole (25).

7. The self-lubricating wind turbine pitch bearing of claim 1, wherein: The oil delivery mechanism (3) is connected with an external lubricating oil supply pump.

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