Corrugated steel sheet and metal rubber combined type controllable damping sliding bearing

Abstract

The utility model provides a corrugated steel sheet and metal rubber combined type controllable damping sliding bearing which comprises a bearing seat, a bearing bush, an oil supply ring, a corrugated steel sheet, a metal rubber damping ring, a power supply, a piezoelectric actuator and a driving block. The damping of the rotor system can be accurately regulated and controlled, so that synchronous vibration is stabilized, and the rotor system runs more stably; furthermore, the hydrodynamic effect is more remarkable through the eccentric design of the bearing bush.

Description

Technical Field

[0001] This utility model relates to the field of rotating mechanism technology, and more specifically, to a controllable damping sliding bearing composed of corrugated steel sheet and metal rubber. Background Technology

[0002] Traditional bearings suffer significant impacts on rotational stability when subjected to large loads, especially when approaching the first-order critical speed range, where rotational stability and reliability are greatly compromised.

[0003] In view of this, the applicant hereby submits this application after studying the existing technology. Utility Model Content

[0004] This invention provides a controllable damping sliding bearing composed of corrugated steel sheets and metal rubber, which aims to improve at least one of the above-mentioned technical problems.

[0005] To solve the above-mentioned technical problems, this utility model provides a controllable damping sliding bearing composed of a corrugated steel sheet and a metal rubber composite, including a bearing housing and a bearing bush disposed within the bearing housing, wherein a rotating shaft is rotatably fitted within the bearing bush; it also includes an oil supply ring, a corrugated steel sheet, a metal rubber damping ring, a power supply, a piezoelectric actuator, and a drive block. The oil supply ring is sleeved on the outer side of the bearing bush; the metal rubber damping ring is coaxially mounted on the inner wall of the bearing housing, and a placement cavity is formed between the oil supply ring and the metal rubber damping ring; the corrugated steel sheet is adapted to be disposed within the placement cavity, and its outer end abuts against the inner side of the metal rubber damping ring; the drive block is connected and fitted with the piezoelectric actuator, one side of the corrugated steel sheet abuts against the drive block, and the other side abuts against the inner wall of the placement cavity; the piezoelectric actuator is electrically connected to the power supply; the bearing housing is provided with an oil inlet, and the oil inlet connects to the bearing bush to form an oil inlet passage.

[0006] As a further optimization, end caps are installed at both ends of the bearing bush.

[0007] As a further optimization, the oil supply ring is installed on the inside of both end caps by screws.

[0008] As a further optimization, an annular groove is formed between the oil supply ring and the bearing bush.

[0009] As a further optimization, a circular groove protrudes from the middle of the outer side of the oil supply ring, the upper end of the circular groove is connected to the oil inlet, and the lower end is connected to the annular groove.

[0010] As a further optimization, the bearing bush is provided with multiple oil supply holes at intervals around its periphery, and the oil supply holes connect the annular groove and the inner side of the bearing bush.

[0011] As a further optimization, corrugated steel sheets are respectively provided on both sides of the annular groove. One end of the corrugated steel sheet abuts against the outer wall of the annular groove, and the other end abuts against the driving block.

[0012] As a further optimization, the bearing bush and the rotating shaft are eccentrically arranged.

[0013] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0014] This application provides a controllable damping sliding bearing composed of corrugated steel sheets and metal rubber, including a bearing housing, bearing bush, oil supply ring, corrugated steel sheets, metal rubber damping ring, power supply, piezoelectric actuator, and drive block. Through the combined structure of corrugated steel sheets and metal rubber damping ring, the damping of the rotor system can be precisely controlled, thereby smoothly passing synchronous vibration and making the rotor system run more stably; furthermore, through the eccentric design of the bearing bush, the hydrodynamic pressure effect is more significant. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a controllable damping sliding bearing that combines corrugated steel sheet and metal rubber according to this utility model.

[0017] Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a partial structural schematic diagram of a controllable damping sliding bearing that combines corrugated steel sheet and metal rubber according to this utility model.

[0019] Figure 4 This is a utility model Figure 3 A schematic diagram of the cross-sectional structure in the diagram;

[0020] Figure 5 This is a utility model Figure 1 Flowchart illustrating the working principle of a controllable damping sliding bearing composed of corrugated steel sheets and metal rubber.

[0021] The markings in the diagram are: 1. Bearing housing; 2. Bearing bush; 3. Shaft; 4. Oil inlet; 5. Oil supply ring; 6. Corrugated steel sheet; 7. Metal rubber damping ring; 8. Piezoelectric actuator; 9. Drive block; 10. Placement cavity; 11. End cap; 12. Annular groove; 13. Circular groove; 14. Oil supply hole; 15. Power supply. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Depend on Figures 1 to 5 As shown, this utility model embodiment provides a corrugated steel sheet and metal rubber combined controllable damping sliding bearing, including a bearing housing 1 and a bearing bush 2 disposed in the bearing housing 1. A rotating shaft 3 / rotor is rotatably fitted inside the bearing bush 2. The bearing housing 1 includes a base and a top cover connected by bolts. The bearing housing 1 has openings at both ends suitable for the journal of the rotating shaft 3 to extend. The bearing housing 1 is provided with an oil inlet 4, which connects to the bearing bush 2 to form an oil inlet passage. Details are omitted here.

[0024] Preferably, the bearing also includes an oil supply ring 5, a corrugated steel sheet 6, a metal rubber damping ring 7, a power supply 15, a piezoelectric actuator 8, and a drive block 9. The oil supply ring 5 is sleeved on the outside of the bearing bush 2. The metal rubber damping ring 7 is coaxially mounted on the inner wall of the bearing housing 1, with the oil supply ring 5 located inside the metal rubber damping ring 7, and a placement cavity 10 is formed between the two. Further, the corrugated steel sheet 6 is adapted to be disposed in the placement cavity 10, and its outer end abuts against the inner side of the metal rubber damping ring 7. The drive block 9 is connected and cooperates with the piezoelectric actuator 8, with one side of the corrugated steel sheet 6 abutting against the drive block 9 and the other side abutting against the inner wall of the placement cavity 10. The corrugated steel sheet 6 is arranged in multiple layers. First, the oil inlet 4 supplies oil to the bearing bush 2 through the oil inlet passage. After the oil supply is completed, the shaft 3 system starts and accelerates smoothly. The hydrodynamic pressure effect lifts the journal. When the first-order critical speed is reached, the amplitude of the shaft 3 increases, and the vibration is abnormally obvious. At this time, the piezoelectric actuator 8 is connected to the power supply 15 and controlled by voltage to generate the inverse piezoelectric effect. The piezoelectric actuator 8 generates a small displacement and squeezes the drive block 9. This, in turn, acts on the corrugated steel sheet 6 through mechanical coupling, causing it to deform. When the corrugated steel sheet deforms, it rubs against the metal rubber damping ring 7. This friction causes dry friction between the metal wires inside the metal rubber damping ring 7, thereby dissipating a large amount of vibration energy and reducing the synchronous vibration of the system, such as oil film eddy and oil film oscillation, thus playing a role in damping and vibration reduction. As a result, the entire rotor system will operate more stably.

[0025] Preferably, in this embodiment, end caps 11 are provided between the two ends of the bearing bush 2 and the bearing housing 1, and the bearing bush 2 and the oil supply ring 5 are respectively connected to the end caps 11 by screws.

[0026] Preferably, an annular groove 12 is formed between the oil supply ring 5 and the bearing bush 2. Further, an annular groove 13 protrudes from the center of the outer side of the oil supply ring 5, with its upper end connected to the oil inlet 4 and its lower end connected to the annular groove 12. Additionally, a plurality of oil supply holes 14 are spaced around the bearing bush 2, connecting the annular groove 12 and the inner side of the bearing bush 2. In this embodiment, the oil inlet 4 located on the bearing housing 1 serves as the oil inlet, and an oil passage is formed along the annular groove 13, the annular groove 12, and the plurality of oil supply holes 14 to reach the bearing bush 2, thereby lubricating the rotating shaft 3. In this embodiment, four oil supply holes 14 are arranged circumferentially to supply oil in a circumferential manner, ensuring sufficient lubrication of the interior of the bearing bush 2.

[0027] Preferably, in this embodiment, the outer wall of the annular groove 13 serves as one inner wall of the placement cavity 10, with corrugated steel sheets 6 arranged on both sides. One end of the corrugated steel sheet 6 abuts against the outer wall of the annular groove 13, and the other end abuts against the drive block 9. Finally, the piezoelectric actuator 8 presses the drive block 9 and further presses the corrugated steel sheet 6, causing it to deform and interact with the metal rubber damping ring 7. Through the combination of the metal rubber damping ring 7 and the multi-layered corrugated steel sheets, precise control of damping and stiffness is achieved, especially for vibration control of the bearing at the critical speed. The combined action of the two enables the bearing to bear axial and radial loads simultaneously. The corrugated steel sheets can adjust the axial stiffness, and at the same time, the corrugated steel sheets rub against the metal rubber damping ring 7, changing the stiffness and damping characteristics of the metal rubber damping ring 7. This combined action significantly improves the vibration reduction effect of the bearing.

[0028] Preferably, the bearing bush 2 and the shaft 3 are eccentrically positioned. This effectively optimizes the oil film pressure distribution between the bearing bush 2 and the shaft. By changing the contact surface position, the bearing bush 2 is designed to be eccentrically configured with respect to the shaft diameter, forming a minimum clearance hmin and a maximum clearance hmax. This design effectively improves the distribution of the contact area, significantly enhances the bearing's load-bearing capacity under high-speed and high-load conditions, more evenly distributes the bearing load, reduces wear, and extends service life. Specifically, the sliding bearing forms an oil film on the surface of the bearing bush 2 through the hydrodynamic pressure effect generated by the shaft rotation, providing support force. When the rotor system speed reaches the critical speed, synchronous vibration occurs, causing an increase in amplitude. During this process, the deformation of the corrugated steel sheet 6 is controlled by the voltage of the power supply 15, causing the metal rubber damping ring 7 to rub against the corrugated steel sheet 6. This friction effectively suppresses the amplitude, helping the rotor system smoothly pass the critical speed. Therefore, the sliding bearing can maintain stable operation under high load or high speed and significantly reduce synchronous vibration.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A controllable damping sliding bearing composed of corrugated steel sheets and metal rubber, characterized in that, It includes a bearing housing and a bearing bush disposed within the bearing housing, wherein a rotating shaft is rotatably fitted within the bearing bush; It also includes an oil supply ring, a corrugated steel sheet, a metal rubber damping ring, a power supply, a piezoelectric actuator, and a drive block. The oil supply ring is sleeved on the outside of the bearing bush; the metal rubber damping ring is coaxially mounted on the inner wall of the bearing housing, and a placement cavity is formed between the oil supply ring and the metal rubber damping ring; the corrugated steel sheet is adapted to be disposed in the placement cavity, and its outer end abuts against the inner side of the metal rubber damping ring; the drive block is connected and cooperates with the piezoelectric actuator, one side of the corrugated steel sheet abuts against the drive block, and the other side abuts against the inner wall of the placement cavity; the piezoelectric actuator is electrically connected to the power supply. The bearing housing is provided with an oil inlet, and the oil inlet is connected to the inside of the bearing bush to form an oil inlet passage.

2. The controllable damping sliding bearing of corrugated steel sheet and metal rubber combination according to claim 1, characterized in that... The bearing bush is fitted with end caps at both ends.

3. The controllable damping sliding bearing of corrugated steel sheet and metal rubber combination according to claim 2, characterized in that... The oil supply ring is installed on the inside of both end caps by screws.

4. The controllable damping sliding bearing of corrugated steel sheet and metal rubber combination according to claim 1, characterized in that... An annular groove is formed between the oil supply ring and the bearing bush.

5. A controllable damping sliding bearing combining corrugated steel sheet and metal rubber according to claim 4, characterized in that... The oil supply ring has a circular groove protruding from the middle of its outer side. The upper end of the circular groove is connected to the oil inlet, and the lower end is connected to the annular groove.

6. The controllable damping sliding bearing of corrugated steel sheet and metal rubber combination according to claim 5, characterized in that... The bearing bush is provided with multiple oil supply holes at intervals around its periphery, and the oil supply holes connect the annular groove and the inner side of the bearing bush.

7. A controllable damping sliding bearing combining corrugated steel sheet and metal rubber according to claim 5, characterized in that... Corrugated steel sheets are provided on both sides of the annular groove. One end of the corrugated steel sheet abuts against the outer wall of the annular groove, and the other end abuts against the driving block.

8. The controllable damping sliding bearing of corrugated steel sheet and metal rubber combination according to claim 1, characterized in that... The bearing bush and the rotating shaft are eccentrically arranged.

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