Generator bearing bush capable of automatically lubricating

Abstract

The utility model discloses a generator bearing bush capable of automatically lubricating, which relates to the technical field of bearing bushes and comprises an upper bearing bush and a lower bearing bush which are connected through a connecting component. During use, lubricating oil is injected into the arc-shaped sealing cavity through the oil injection pipe and the one-way valve, injection is stopped after the area, between the two arc-shaped sealing sliding plates, of the arc-shaped sealing cavity is filled with the lubricating oil, and then the upper bearing bush and the lower bearing bush are installed; when the temperature rises, the internal pressure is increased, two arc-shaped sealing sliding plates in the same bearing bush are pushed to slide oppositely along an arc-shaped sealing cavity under the action of air pressure, and then a sealing lifting column is driven to move towards a circular groove along a sliding hole under the action of the pressure; lubricating oil flows to the surface of the shaft through the two L-shaped oil outlet holes, and then the lubricating effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing bushes, in particular to a bearing bush of a generator which can be automatically lubricated. Background Art

[0002] The bearing shell is an important component of the sliding bearing. There are oil filling holes on its wall and an annular oil groove on the inside. The annular oil groove plays a lubricating role. When the shaft runs at high speed in the bearing shell, it will generate a lot of heat. The high temperature generated by direct friction will burn the bearing shell. It may also be caused by excessive load, high temperature, impurities in the lubricating oil or abnormal viscosity. After the bearing shell is burned, the sliding bearing is damaged.

[0003] The prior art patent with publication number CN210265510U discloses a bearing that can automatically add lubricating oil. The bearing achieves lubrication by generating high-temperature melted solid lubricating oil when the shaft runs at high speed. However, in actual use, it is cumbersome to re-add the solid lubricating oil after consumption, and when the ambient temperature is high, the solid lubricating oil may also melt, which has low practicality. In view of the above problems, a generator bearing that can automatically lubricate is proposed. Utility Model Content

[0004] The purpose of the present application is to provide a generator bearing that can be automatically lubricated to solve the problems raised in the above-mentioned background technology that in actual use, the operation of refilling the solid lubricant after consumption is rather cumbersome, and when the ambient temperature is high, the solid lubricant may also melt, resulting in low practicality.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an automatically lubricated generator bearing, comprising an upper bearing and a lower bearing, wherein the upper bearing is connected to the lower bearing via a connecting assembly, wherein an arc-shaped sealing cavity is provided in each of the upper bearing and the lower bearing, wherein a lubrication assembly is provided in each of the two arc-shaped sealing cavities, wherein the lubrication assembly comprises an oil filling pipe and two arc-shaped sealing slide plates, wherein a mounting hole is provided in the side inner wall of the arc-shaped sealing cavity, wherein the oil filling pipe is sealingly installed in the mounting hole, wherein a one-way valve is provided on the oil filling pipe, wherein the two arc-shaped sealing slide plates are slidably installed in the arc-shaped sealing cavity, and wherein the periphery of the arc-shaped sealing slide plate is provided with a lubrication assembly. The side outer wall is sealed and connected with the circumferential inner wall of the arc-shaped sealing cavity, the sides of the two arc-shaped sealing slide plates are each provided with a first guide unit and a first reset unit, the circumferential inner walls of the upper bearing shell and the lower bearing shell are each provided with a circular groove, the end inner walls of the two circular grooves are each provided with a sliding hole, and an oil outlet assembly is each provided in the two sliding holes, and the oil outlet assembly includes a sealing lifting column, which is slidably installed in the sliding hole, the circumferential outer wall of the sealing lifting column is sealed and connected with the circumferential inner wall of the sliding hole, the top of the sealing lifting column is provided with a second guide unit and a second reset unit, and the sealing lifting column is provided with two L-shaped oil outlet holes.

[0006] Preferably, the connecting assembly includes four connecting plates, and the four connecting plates are respectively fixedly mounted on the circumferential outer walls of the upper bearing shell and the lower bearing shell, and threaded holes are opened on the tops of the four connecting plates, and four bolts are respectively threadedly mounted in the eight threaded holes, and nuts are threadedly mounted on the four bolts.

[0007] Preferably, the first guide unit includes an arc-shaped guide rod, an arc-shaped sliding hole is opened on the circumferential inner wall of the arc-shaped sealing slide plate, one end of the arc-shaped guide rod is fixedly mounted on the side inner wall of the arc-shaped sealing cavity, and the arc-shaped sealing slide plate is slidably mounted on the arc-shaped guide rod.

[0008] Preferably, the first reset unit comprises a reset spring, one end of which is fixedly mounted on the inner wall of the side of the arc-shaped sealing cavity, and the other end of which is fixedly mounted on the side of the arc-shaped sealing slide plate.

[0009] Preferably, the second guide unit comprises a guide shaft, a guide hole is formed at the top of the sealing lifting column, one end of the guide shaft is fixedly mounted on the inner wall of the arc-shaped sealing cavity, and the other end of the guide shaft is slidably mounted in the guide hole.

[0010] Preferably, the second resetting unit comprises a compression spring, one end of which is fixedly mounted on the inner wall of the circumference of the arc-shaped sealing cavity, and the other end of which is fixedly mounted on the top end of the sealing lifting column.

[0011] Preferably, the upper bearing shell, the lower bearing shell, and the plurality of connecting plates are all made of stainless steel.

[0012] In summary, the technical effects and advantages of the utility model are:

[0013] 1. In the utility model, the lubricating oil is injected into the arc-shaped sealing cavity. When the lubricating oil fills the arc-shaped sealing cavity area between the two arc-shaped sealing slide plates, the injection is stopped. The upper bearing shell and the lower bearing shell are fixed on the shaft. When the shaft rotates at a high speed, high temperature is generated. After the high temperature is transmitted into the arc-shaped sealing cavity, due to its sealing environment, when the temperature rises, its internal pressure increases. Under the action of air pressure, the two arc-shaped sealing slide plates in the same bearing shell are pushed to slide toward each other along the arc-shaped sealing cavity. Under the action of pressure, the sealing lifting column is driven to move along the sliding hole toward the circular groove. When one end of the L-shaped oil outlet hole slides to the circular groove position, the lubricating oil flows from the two L-shaped oil outlet holes to the shaft surface, thereby realizing the lubrication effect. Such an arrangement not only has a better lubrication effect, but also facilitates the subsequent operation of adding lubricating oil, and has better practicality.

[0014] 2. In the utility model, when the temperature drops, the pressure in the arc-shaped sealing cavity drops, and then the sealing lifting column is driven to move upward and reset under the elastic action of the compression spring, thereby playing a sealing role to prevent the lubricating oil from continuing to flow out of the L-shaped oil outlet hole. At the same time, under the action of two reset springs, the two arc-shaped sealing slide plates are driven to reset synchronously, which is convenient for subsequent lubrication operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a generator bearing bush capable of automatic lubrication in an embodiment of the present application;

[0017] Figure 2 This is a schematic diagram of a partial cross-section structure of an upper bearing shell in an embodiment of the present application;

[0018] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4 This is a schematic diagram of the enlarged structure of the sealed lifting column in the embodiment of the present application.

[0020] In the figure: 1. upper bearing; 2. lower bearing; 3. connecting plate; 4. bolt; 5. arc-shaped sealing chamber; 6. oil filling pipe; 7. one-way valve; 8. arc-shaped sealing slide plate; 9. arc-shaped guide rod; 10. return spring; 11. circular groove; 12. sealing lifting column; 13. guide shaft; 14. compression spring; 15. L-shaped oil outlet hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example: Reference Figure 1-4 The generator bearing bushing that can be automatically lubricated as shown in the figure includes an upper bearing bushing 1 and a lower bearing bushing 2. The upper bearing bushing 1 and the lower bearing bushing 2 are connected by a connecting assembly. The upper bearing bushing 1 and the lower bearing bushing 2 are both provided with an arc-shaped sealing cavity 5. The two arc-shaped sealing cavities 5 are both provided with a lubrication assembly. The lubrication assembly includes an oil injection pipe 6 and two arc-shaped sealing slide plates 8. The side inner wall of the arc-shaped sealing cavity 5 is provided with a mounting hole. The oil injection pipe 6 is sealed and installed in the mounting hole. A one-way valve 7 is provided on the oil injection pipe 6. The two arc-shaped sealing slide plates 8 are both slidably installed in the arc-shaped sealing cavity 5. The outer wall of the circumference of the arc-shaped sealing slide plate 8 is connected to the arc-shaped sealing cavity 5. The circumferential inner wall of the sealing lifting column 12 is sealed and connected, the sides of the two arc-shaped sealing slide plates 8 are provided with a first guide unit and a first reset unit, the circumferential inner walls of the upper bearing 1 and the lower bearing 2 are provided with a circular groove 11, the inner walls of the ends of the two circular grooves 11 are provided with sliding holes, and oil outlet components are provided in the two sliding holes. The oil outlet component includes a sealing lifting column 12, which is slidably installed in the sliding hole, and the circumferential outer wall of the sealing lifting column 12 is sealed and connected with the circumferential inner wall of the sliding hole, the top of the sealing lifting column 12 is provided with a second guide unit and a second reset unit, and the sealing lifting column 12 is provided with two L-shaped oil outlet holes 15.

[0023] By means of the above structure, when in use, the lubricating oil is first injected into the arc-shaped sealing chamber 5 through the oil filling pipe 6 and the one-way valve 7. Due to the sealing effect of the two arc-shaped sealing slide plates 8, the lubricating oil stops being injected after filling the arc-shaped sealing chamber 5 area between the two arc-shaped sealing slide plates 8. Then the upper bearing 1 and the lower bearing 2 are fixed to the shaft through the connecting assembly. When the shaft rotates at high speed, high temperature is generated. After the high temperature is transmitted into the arc-shaped sealing chamber 5, due to its sealing environment, when the temperature rises, its internal pressure increases. Under the action of air pressure, the two arc-shaped sealing slide plates 8 in the same bearing are pushed to slide toward each other along the arc-shaped sealing chamber 5. Then, under the action of pressure, the sealing lifting column 12 is driven to move along the sliding hole toward the circular groove 11. When one end of the L-shaped oil outlet hole 15 slides to the position of the circular groove 11, the lubricating oil flows from the two L-shaped oil outlet holes 15 to the shaft surface, thereby realizing the lubrication effect. Such a setting not only has a better lubrication effect, but also facilitates the subsequent addition of lubricating oil, and is more practical. When the temperature drops, the pressure in the arc-shaped sealing cavity 5 decreases, and the sealing lifting column 12 and the two arc-shaped sealing slide plates 8 are synchronously reset under the joint action of the first reset unit and the second reset unit, which is convenient for subsequent lubrication operations.

[0024] like Figure 1 As shown, the connecting assembly includes four connecting plates 3, and the four connecting plates 3 are respectively fixedly installed on the peripheral outer walls of the upper bearing 1 and the lower bearing 2. Threaded holes are opened on the tops of the four connecting plates 3, and four bolts 4 are respectively threadedly installed in the eight threaded holes, and nuts are threadedly installed on the four bolts 4. The advantage of such an arrangement is that through the arrangement of multiple bolts 4 and nuts, the upper bearing 1 and the lower bearing 2 can be conveniently fixed, which is convenient for installation and disassembly operations.

[0025] like Figure 2 As shown, the first guiding unit includes an arc-shaped guide rod 9, and an arc-shaped sliding hole is opened on the inner wall of the circumference of the arc-shaped sealing slide plate 8. One end of the arc-shaped guide rod 9 is fixedly installed on the side inner wall of the arc-shaped sealing cavity 5, and the arc-shaped sealing slide plate 8 is slidably installed on the arc-shaped guide rod 9. The advantage of such an arrangement is that, through the arrangement of the arc-shaped guide rod 9, the guiding function of the arc-shaped sealing slide plate 8 can be realized, and deformation of the first reset unit can be prevented.

[0026] like Figure 2 As shown, the first reset unit includes a reset spring 10, one end of the reset spring 10 is fixedly mounted on the inner wall of the side of the arc-shaped sealing cavity 5, and the other end of the reset spring 10 is fixedly mounted on the side of the arc-shaped sealing slide plate 8. The advantage of such a setting is that, through the setting of the reset spring 10, when the pressure in the arc-shaped sealing cavity 5 is reduced, the arc-shaped sealing slide plate 8 can be driven to reset under the elastic action of the reset spring 10.

[0027] like Figure 3As shown, the second guide unit includes a guide shaft 13, and a guide hole is opened at the top of the sealing lifting column 12. One end of the guide shaft 13 is fixedly installed on the inner wall of the circumference of the arc-shaped sealing cavity 5, and the other end of the guide shaft 13 is slidably installed in the guide hole. The advantage of this arrangement is that through the arrangement of the guide shaft 13, the guiding function of the sealing lifting column 12 can be realized, and the second reset unit can be prevented from being deformed.

[0028] like Figure 3 As shown, the second reset unit includes a compression spring 14, one end of the compression spring 14 is fixedly installed on the inner wall of the circumference of the arc-shaped sealing cavity 5, and the other end of the compression spring 14 is fixedly installed on the top of the sealing lifting column 12. The advantage of this arrangement is that when the pressure in the arc-shaped sealing cavity 5 is reduced, the elastic action of the compression spring 14 can drive the sealing lifting column 12 to reset, thereby realizing the sealing function.

[0029] like Figure 1 As shown, the upper bearing 1, the lower bearing 2, and the plurality of connecting plates 3 are all made of stainless steel. The advantage of this arrangement is that by using stainless steel to make the upper bearing 1, the lower bearing 2, and the connecting plates 3, the protective performance can be improved and rust can be prevented.

[0030] The working principle of the utility model is as follows: when in use, the lubricating oil is first injected into the arc-shaped sealing cavity 5 through the oil filling pipe 6 and the one-way valve 7. Due to the sealing effect of the two arc-shaped sealing slide plates 8, the lubricating oil stops being injected after filling the arc-shaped sealing cavity 5 area between the two arc-shaped sealing slide plates 8. Then, the upper bearing 1 and the lower bearing 2 are fixed to the shaft through multiple bolts 4 and multiple nuts. When the shaft rotates at high speed, high temperature is generated. After the high temperature is transmitted into the arc-shaped sealing cavity 5, due to its sealing environment, when the temperature rises, its internal pressure increases. Under the action of air pressure, the two arc-shaped sealing slide plates 8 in the same bearing are pushed to slide toward each other along the arc-shaped sealing cavity 5. Then, under the action of pressure, the sealing lifting column 12 is driven to move along the sliding hole toward the circular groove 11. When one end of the L-shaped oil outlet hole 15 slides to the position of the circular groove 11, the lubricating oil flows from the two L-shaped oil outlet holes 15 to the shaft surface, thereby realizing the lubrication effect. Such a configuration not only has a better lubrication effect, but also facilitates the subsequent operation of adding lubricating oil, and is more practical. When the temperature drops, the pressure in the arc-shaped sealing chamber 5 decreases, and the sealing lifting column 12 is driven to move upward and reset under the elastic action of the compression spring 14, thereby playing a sealing role and preventing the lubricating oil from continuing to flow out of the L-shaped oil outlet 15. At the same time, the two arc-shaped sealing slide plates 8 are driven to reset synchronously under the action of the two reset springs 10, which is convenient for subsequent lubrication operations.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A generator bearing bush capable of automatic lubrication, comprising an upper bearing bush (1) and a lower bearing bush (2), characterized in that: The upper bearing (1) and the lower bearing (2) are connected via a connecting assembly. The upper bearing (1) and the lower bearing (2) are each provided with an arc-shaped sealing cavity (5). The two arc-shaped sealing cavities (5) are each provided with a lubrication assembly. The lubrication assembly comprises an oil injection pipe (6) and two arc-shaped sealing slide plates (8). The side inner wall of the arc-shaped sealing cavity (5) is provided with a mounting hole. The oil injection pipe (6) is sealingly mounted in the mounting hole. A one-way valve (7) is provided on the oil injection pipe (6). The two arc-shaped sealing slide plates (8) are slidably mounted in the arc-shaped sealing cavity (5). The peripheral outer wall of the arc-shaped sealing slide plate (8) is sealingly connected to the peripheral inner wall of the arc-shaped sealing cavity (5). The sides of the two arc-shaped sealing slide plates (8) are each provided with a first guide unit and a first reset unit, the circumferential inner walls of the upper bearing shell (1) and the lower bearing shell (2) are each provided with a circular groove (11), the inner walls at the ends of the two circular grooves (11) are each provided with a sliding hole, and an oil outlet assembly is provided in the two sliding holes, the oil outlet assembly comprises a sealing lifting column (12), the sealing lifting column (12) is slidably installed in the sliding hole, the circumferential outer wall of the sealing lifting column (12) is sealedly connected to the circumferential inner wall of the sliding hole, the top end of the sealing lifting column (12) is provided with a second guide unit and a second reset unit, and the sealing lifting column (12) is provided with two L-shaped oil outlet holes (15).

2. The automatic lubricating generator bearing bush according to claim 1, characterized in that: The connection assembly comprises four connection plates (3), and the four connection plates (3) are respectively fixedly mounted on the peripheral outer walls of the upper bearing shell (1) and the lower bearing shell (2), and the tops of the four connection plates (3) are each provided with a threaded hole, and four bolts (4) are respectively threadedly mounted in the eight threaded holes, and nuts are respectively threadedly mounted on the four bolts (4).

3. The automatic lubricating generator bearing bush according to claim 1, characterized in that: The first guide unit comprises an arc-shaped guide rod (9), the inner wall of the circumferential side of the arc-shaped sealing slide plate (8) is provided with an arc-shaped sliding hole, one end of the arc-shaped guide rod (9) is fixedly mounted on the inner wall of the side of the arc-shaped sealing cavity (5), and the arc-shaped sealing slide plate (8) is slidably mounted on the arc-shaped guide rod (9).

4. The automatic lubricating generator bearing bush according to claim 1, characterized in that: The first reset unit comprises a reset spring (10), one end of the reset spring (10) is fixedly mounted on the inner wall of the side of the arc-shaped sealing cavity (5), and the other end of the reset spring (10) is fixedly mounted on the side of the arc-shaped sealing slide plate (8).

5. The automatic lubricating generator bearing bush according to claim 1, characterized in that: The second guide unit comprises a guide shaft (13), a guide hole is provided at the top end of the sealing lifting column (12), one end of the guide shaft (13) is fixedly mounted on the inner wall of the circumference of the arc-shaped sealing cavity (5), and the other end of the guide shaft (13) is slidably mounted in the guide hole.

6. The automatic lubricating generator bearing bush according to claim 1, characterized in that: The second reset unit comprises a compression spring (14), one end of the compression spring (14) is fixedly mounted on the inner wall of the circumference of the arc-shaped sealing cavity (5), and the other end of the compression spring (14) is fixedly mounted on the top end of the sealing lifting column (12).

7. The automatic lubricating generator bearing bush according to claim 2, characterized in that: The upper bearing shell (1), the lower bearing shell (2), and the plurality of connecting plates (3) are all made of stainless steel.

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