Lubricating structure for bearing of hydro-generator

Abstract

The utility model discloses a bearing lubricating structure of a hydro-generator, and belongs to the field of bearings. The utility model discloses a hydro-generator bearing lubricating structure, which comprises a bearing body, a bearing sleeve and a bearing sleeve, the bearing body comprises an inner bearing ring, balls and an outer bearing ring; the oil storage cavity is formed in the side wall of the outer bearing ring; the oil inlet hole is formed in the top wall of the outer bearing ring and is communicated with the oil storage cavity; a plurality of groups of lubricating pieces are arranged on the outer bearing ring at equal intervals; the flow guide hole is formed in the bottom wall of the oil storage cavity; the two sliding blocks are symmetrically connected to the side wall of the flow guide hole in a sliding mode. The two connecting rods are fixedly connected to the side wall of one sliding block. The guide rod is fixedly connected to the connecting rod; the limiting block is fixedly connected to the side wall of the flow guide hole. The bearing lubricating structure of the hydro-generator has the beneficial effects that by arranging the oil storage cavity, the requirement for long-time lubricating work can be met after one-time oiling, and the stability and reliability of bearing lubricating are improved.

Description

Technical Field

[0001] The present application relates to the field of bearings, and in particular to a lubrication structure for a hydraulic generator bearing. Background Art

[0002] Ordinary hydro-turbine generators have high requirements for design and manufacturing technology due to their one-way operation and frequent start and stop. Therefore, the guide bearings of the generators need to be lubricated. The existing lubrication structure usually uses immersion operation to lubricate the guide bearings with lubricating oil. The lubrication structure of the shaft and bearings has oil leakage, which makes it impossible to meet the needs of long-term operation after one lubrication.

[0003] A hydro-generator bearing lubrication structure is now provided. Utility Model Content

[0004] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0005] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a hydraulic generator bearing lubrication structure, including: a bearing body;

[0006] The invention is characterized in that: the bearing body comprises: an inner bearing ring, a ball and an outer bearing ring;

[0007] The bearing lubrication structure of the hydro-generator also includes:

[0008] An oil storage cavity is provided in the side wall of the outer bearing ring;

[0009] An oil inlet hole is provided on the top wall of the outer bearing ring and communicates with the oil storage cavity;

[0010] Lubricating parts are provided in multiple groups and are arranged on the outer bearing ring at equal intervals;

[0011] Lubricating parts include:

[0012] A guide hole is provided on the bottom wall of the oil storage cavity;

[0013] The slider is provided with two symmetrically positioned sliding connections on the side wall of the guide hole;

[0014] Two connecting rods are provided and are respectively fixedly connected to the side wall of one of the sliders;

[0015] A guide rod, fixedly connected to the connecting rod;

[0016] A limit block, fixedly connected to the side wall of the guide hole;

[0017] A ball plug is fixedly connected to one end of the guide rod;

[0018] The universal ball is installed on the other end of the guide rod.

[0019] Furthermore, the ball rolls in contact with the side wall of the inner bearing ring; the limit clamp is provided with two spherical surfaces of the ball clamps symmetrically in upper and lower positions; the inner wall of the outer bearing ring rolls in contact with the ball;

[0020] The inner bearing ring is located in the inner ring of the outer bearing ring, and the outer wall of the inner bearing ring and the inner wall of the outer bearing ring form an annular ring space.

[0021] Furthermore, the guide hole is arranged obliquely, the guide hole passes through the side wall of the outer bearing ring and is connected with the annular space; the guide rod is arranged obliquely, and the central axis of the guide rod itself is at the same position as the central axis of the guide hole.

[0022] Furthermore, the connecting rod and the slider are symmetrically positioned about the guide rod, the slider is an arc-shaped block, the slider is slidably connected to the side wall of the guide hole, and the guide rod can only slide along the central axis direction of the guide hole.

[0023] Furthermore, the ball diameter of the ball plug is larger than the aperture of the guide hole, and the ball diameter of the universal ball is smaller than the aperture of the guide hole.

[0024] Furthermore, a plurality of limit blocks are provided and fixedly connected to the side wall of the guide hole at equal intervals, and the limit block is located between the universal ball and the slider, and a plurality of dredging holes penetrating the end wall of the limit block are provided on the limit block.

[0025] Furthermore, a plurality of balls are provided and are distributed in the annular space with equal spacing and rolling.

[0026] Furthermore, a plurality of limiting clamps are provided, and two of the limiting clamps are symmetrically arranged on the upper and lower sides of one of the balls, and the ball is rotationally contacted with the limiting clamps.

[0027] Further, an oil seal is disposed in the annular space;

[0028] Oil seals include:

[0029] A first oil seal, fixedly connected to a side wall of the annular space;

[0030] The second oil seal is fixedly connected to the side wall of the annular space.

[0031] Furthermore, the hydro-generator bearing lubrication structure also includes:

[0032] A hole plug is inserted into the oil inlet hole;

[0033] Among them, an internal thread is arranged on the inner wall of the oil inlet hole, an external thread is arranged on the lower end of the hole plug, and the hole plug is threadably connected to the oil inlet hole.

[0034] The beneficial effect of the present application is that it provides a hydraulic generator bearing lubrication structure, which, by setting an oil storage chamber, can meet the needs of long-term lubrication work after one refueling, extend the lubrication time, and improve the stability and reliability of bearing lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0036] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0037] In the attached picture:

[0038] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0039] Figure 2 yes Figure 1 Schematic diagram of overall cross-sectional plan;

[0040] Figure 3 yes Figure 2 A magnified view of part A;

[0041] Figure 4 yes Figure 3 Schematic diagram of the structure of BB.

[0042] Reference numerals:

[0043] 11. Annular space; 12. Generator shaft; 13. Inner bearing ring; 14. Outer bearing ring; 15. First oil seal; 16. Second oil seal; 17. Limiting clamp; 18. Ball; 19. Oil inlet hole; 20. Hole plug; 21. Oil storage chamber; 22. Diversion hole; 23. Ball plug; 24. Guide rod; 25. Universal ball; 26. Limiting block; 27. Sliding block; 28. Connecting rod; 29. ​​Clearing hole. DETAILED DESCRIPTION

[0044] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0045] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0046] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0047] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0048] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0049] Reference Figure 1-Figure 4 , a hydraulic generator bearing lubrication structure, comprising: a bearing body;

[0050] The bearing body includes an inner bearing ring 13 , balls 18 , an outer bearing ring 14 , and a limiting clamp 17 .

[0051] The inner bearing ring 13 is located in the inner ring of the outer bearing ring 14, and the outer wall of the inner bearing ring 13 and the inner wall of the outer bearing ring 14 form an annular annular space 11. A plurality of balls 18 are provided and are rolled and distributed in the annular space 11 at equal intervals. A plurality of limit clamps 17 are provided, and two of the limit clamps 17 are symmetrically arranged on the upper and lower sides of one of the balls 18, and the ball 18 is in rotational contact with the limit clamps 17.

[0052] The inner wall of the outer bearing ring 14 is in rolling contact with the balls 18 .

[0053] An oil storage chamber 21 is provided in the side wall of the outer bearing ring 14, and an oil inlet hole 19 is provided on the top wall of the outer bearing ring 14. The oil inlet hole 19 is connected to the oil storage chamber 21, and an internal thread is provided on the inner wall of the oil inlet hole 19. An external thread is provided on the lower end of the hole plug 20, and the hole plug 20 is threadedly connected to the oil inlet hole 19.

[0054] In order to lubricate the ball 18 , a plurality of groups of lubricating parts are provided, including a sliding block 27 , a connecting rod 28 , a guide rod 24 , a limit block 26 , a ball plug 23 , and a universal ball 25 .

[0055] A guide hole 22 is provided on the bottom wall of the oil storage chamber 21. The guide hole 22 is tilted and penetrates the side wall of the outer bearing ring 14 and communicates with the annular space 11. Two sliders 27 are provided and symmetrically slidably connected to the side wall of the guide hole 22. Two connecting rods 28 are provided and fixedly connected to the side wall of one of the sliders 27. The guide rod 24 is fixedly connected to one end of the two connecting rods 28. The guide rod 24 is tilted, and the central axis of the guide rod 24 itself is at the same position as the central axis of the guide hole 22. The connecting rod 28 and the slider 27 are symmetrical about the guide rod 24. The slider 27 is an arc block. The slider 27 is slidably connected to the side wall of the guide hole 22. The guide rod 24 can only slide along the central axis direction of the guide hole 22.

[0056] The limit block 26 is provided with a plurality of fixedly connected to the side wall of the guide hole 22 at equal intervals, and the limit block 26 is located between the universal ball 25 and the slider 27. The limit block 26 is provided with a plurality of dredging holes 29 penetrating the end wall of the limit block 26. The ball plug 23 is fixedly connected to one end of the guide rod 24, and the ball plug 23 is located in the oil storage chamber 21. The universal ball 25 is installed on the other end of the guide rod 24. The ball diameter of the ball plug 23 is larger than the aperture of the guide hole 22, and the ball diameter of the universal ball 25 is smaller than the aperture of the guide hole 22.

[0057] In order to oil seal the annular space 11 , an oil seal is provided, which includes a first oil seal 15 and a second oil seal 16 . The first oil seal 15 is fixedly connected to the side wall of the annular space 11 , and the second oil seal 16 is fixedly connected to the side wall of the annular space 11 .

[0058] Working or installation process:

[0059] Initial state:

[0060] The ball plug 23 closes the hole connecting the guide hole 22 and the oil storage chamber 21 , and a portion of the universal ball 25 extends out of the guide hole 22 and into the annular space 11 ; the ball 18 does not come into contact with the universal ball 25 .

[0061] The inner bearing ring 13 is pressed and sleeved on the generator shaft 12 so that the generator shaft 12 is fixedly connected to the inner bearing ring 13, and the hole plug 20 is rotated in the reverse direction so that the hole plug 20 is disconnected from the oil inlet hole 19 by thread, and lubricating oil is added into the oil inlet hole 19, and the lubricating oil flows along the oil inlet hole 19 and into the oil storage chamber 21, and the lubricating oil is stored in the oil storage chamber 21, and the hole plug 20 is rotated in the forward direction so that the hole plug 20 is threadedly connected to the oil inlet hole 19 again and the oil inlet hole 19 is closed;

[0062] When the generator shaft 12 rotates, the generator shaft 12 drives the inner bearing ring 13 to rotate. The inner bearing ring 13 rotates and drives the ball 18 to roll. Since the annular space 11 will vibrate when rotating, the vibration and the rolling of the ball 18 will cause the ball 18 to rotate in a circle around the axis of the generator shaft 12. When the ball 18 rotates around the axis of the generator shaft 12, the ball 18 rotates and contacts the universal ball 25. The ball 18 presses the universal ball 25 and makes the universal ball 25 push the guide rod 24. Since the slider 27 and the connecting rod 28 limit the guide rod 24, the guide rod 24 can only move along the The guide hole 22 moves in the direction of the central axis, the guide rod 24 drives the connecting rod 28 and the slider 27 and slides in the guide hole 22, the guide rod 24 pushes the ball plug 23 to move to the side away from the limit block 26, and makes the ball plug 23 no longer block the connection port between the closed guide hole 22 and the oil storage chamber 21, the lubricating oil stored in the oil storage chamber 21 flows into the guide hole 22, and flows downward into the annular space 11 through the inclined inner wall of the guide hole 22, and makes the lubricating oil adhere to the ball 18, because the ball 18 is in a rolling state, the lubricating oil can coat most of the spherical surface of the ball 18, thereby lubricating the ball 18.

[0063] When the ball 18 rolls to the point where it no longer presses against the universal ball 25, the universal ball 25 is no longer pressed upward by the ball 18, and the universal ball 25 and the ball plug 23 slide downward along the central axis of the guide hole 22 under the action of their own gravity, allowing the ball plug 23 to block and seal the connection between the guide hole 22 and the oil storage chamber 21 again.

[0064] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A hydraulic generator bearing lubrication structure, comprising: Bearing body; The characteristic is that the bearing body comprises an inner bearing ring (13), a ball (18) and an outer bearing ring (14); The hydro-generator bearing lubrication structure also includes: An oil storage chamber (21) is provided in the side wall of the outer bearing ring (14); An oil inlet hole (19) is provided on the top wall of the outer bearing ring (14) and is connected to the oil storage cavity (21); Lubricating parts are provided in multiple groups and are arranged on the outer bearing ring (14) at equal intervals; The lubricating element comprises: A flow guide hole (22) is provided on the bottom wall of the oil storage chamber (21); A slider (27) is provided with two sliders which are symmetrically positioned and slidably connected to the side wall of the guide hole (22); Two connecting rods (28) are provided and are respectively fixedly connected to the side wall of one of the sliders (27); A guide rod (24) fixedly connected to the connecting rod (28); A limit block (26) fixedly connected to the side wall of the guide hole (22); A ball plug (23) is fixedly connected to one end of the guide rod (24); A universal ball (25) is mounted on the other end of the guide rod (24).

2. The hydraulic generator bearing lubrication structure according to claim 1 is characterized in that: The ball (18) rolls in contact with the side wall of the inner bearing ring (13); two upper and lower symmetrical limit clamps (17) are clamped on the spherical surface of the ball (18); the inner wall of the outer bearing ring (14) rolls in contact with the ball (18); The inner bearing ring (13) is located in the inner ring of the outer bearing ring (14), and the outer wall of the inner bearing ring (13) and the inner wall of the outer bearing ring (14) form an annular ring space (11).

3. The hydraulic generator bearing lubrication structure according to claim 2 is characterized in that: The guide hole (22) is arranged at an angle, and the guide hole (22) passes through the side wall of the outer bearing ring (14) and is connected with the annular space (11); the guide rod (24) is arranged at an angle, and the central axis of the guide rod (24) itself is at the same position as the central axis of the guide hole (22).

4. The hydraulic generator bearing lubrication structure according to claim 3 is characterized in that: The connecting rod (28) and the sliding block (27) are symmetrically positioned with respect to the guide rod (24); the sliding block (27) is an arc-shaped block; the sliding block (27) is slidably connected to the side wall of the guide hole (22); and the guide rod (24) can only slide along the central axis direction of the guide hole (22).

5. The hydraulic generator bearing lubrication structure according to claim 4 is characterized in that: The ball diameter of the ball plug (23) is larger than the hole diameter of the guide hole (22), and the ball diameter of the universal ball (25) is smaller than the hole diameter of the guide hole (22).

6. The hydraulic generator bearing lubrication structure according to claim 5 is characterized in that: The limit block (26) is provided with a plurality of fixedly connected to the side wall of the guide hole (22) at equal intervals, and the limit block (26) is located between the universal ball (25) and the slider (27), and the limit block (26) is provided with a plurality of dredging holes (29) penetrating the end wall of the limit block (26).

7. The hydraulic generator bearing lubrication structure according to claim 2 is characterized in that: The balls (18) are provided in plurality and are distributed and rolled in the annular space (11) at equal intervals.

8. The hydraulic generator bearing lubrication structure according to claim 7 is characterized in that: A plurality of the limiting clamps (17) are provided, and two of the limiting clamps (17) are symmetrically arranged on the upper and lower sides of one of the balls (18), and the ball (18) is in rotational contact with the limiting clamps (17).

9. The hydraulic generator bearing lubrication structure according to claim 2, characterized in that: An oil seal is arranged in the annular space (11); The oil seal comprises: A first oil seal (15) fixedly connected to a side wall of the annular space (11); The second oil seal (16) is fixedly connected to the side wall of the annular space (11).

10. The hydraulic generator bearing lubrication structure according to claim 1, characterized in that: The hydro-generator bearing lubrication structure also includes: A hole plug (20) is inserted into the oil inlet hole (19); The inner wall of the oil inlet hole (19) is provided with an internal thread, the lower end of the hole plug (20) is provided with an external thread, and the hole plug (20) is threadedly connected to the oil inlet hole (19).

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