Organ-like elastic foil thrust bearing with controllable air supply

Abstract

An organ-like elastic foil thrust bearing with controllable air supply comprises a bearing seat (1), an organ-like elastic element (2), a flat foil (3) and a bionic muscle pneumatic switch (4), and the bearing seat (1) comprises a T-shaped mounting groove (1-1), an air supply through hole (1-2), a trapezoidal boss (1-3) and a bionic muscle pneumatic switch seat (1-4). The organ-like elastic element (2) comprises an organ-like elastic element air supply through hole (2-1), an organ-like corrugated foil piece (2-2), a mounting plane (2-3) and a mounting buckle (2-4), the flat foil piece (3) comprises a foil piece plane (3-1) and a foil piece mounting buckle (3-2), and the bionic muscle pneumatic switch (4) comprises a spring (4-1), an annular rubber sleeve (4-2) and a sealing piece (4-3). The pneumatic bionic muscle air supply device comprises a bearing seat (1), T-shaped mounting grooves (1-1), trapezoidal bosses (1-3), pneumatic bionic muscle air supply through holes (4-4) and fixed ends (4-5), and is characterized in that the T-shaped mounting grooves (1-1) and the trapezoidal bosses (1-3) are alternately and uniformly distributed in the bearing seat (1) in the circumferential direction, the air supply through holes (1-2) are uniformly distributed in the trapezoidal bosses (1-3) in the radial direction, and the bionic muscle pneumatic switch seat (1-4) is located at outlets of the air supply through holes (1-2). The organ-like elastic element (2) is located on the trapezoid boss (1-3), the organ-like elastic element air supply through holes (2-1) are evenly distributed in the organ-like corrugated foil (2-2) in the radial direction, the flat foil (3) is located on the organ-like elastic element (2), and the bionic muscle pneumatic switch (4) is located in the air supply through holes (1-2) and the organ-like elastic element air supply through holes (2-1).

Description

Technical field:

[0001] The invention belongs to the field of gas bearings, and in particular relates to an organ-like elastic foil thrust bearing with controllable gas supply. Background technology:

[0002] In the precision equipment system, foil thrust bearings occupy a key position and undertake the indispensable axial load task. They are the core components to ensure the stable support and smooth operation of the shaft system. The traditional foil thrust bearings have a certain rationality in structural design, and can provide corresponding load-bearing capacity with the established structural form, so as to adapt to the basic support requirements of various equipment. However, with the continuous upgrading of industrial technology and the complexity and changeability of actual working conditions, the existing foil thrust bearings have exposed their limitations. After processing and forming, the air supply link is solidified, and it is impossible to flexibly adjust the air supply in real time and accurately according to the specific differences in usage scenarios and the dynamic requirements of bearing performance. This greatly limits its adaptability and performance under various working conditions, and it is difficult to meet the increasingly stringent industrial operation standards and high-efficiency requirements.

[0003] Although foil thrust bearings are widely used, the air supply conditions of traditional types are relatively fixed, which makes it difficult to meet the needs under complex working conditions, limiting the scope of use. The pneumatic bionic muscle technology that has emerged in recent years has brought new ideas. Pneumatic bionic muscles made of rubber can deform and adjust their own diameter by controlling the air intake. Combining it with foil thrust bearings, the air supply conditions of each air supply hole can be independently adjusted, which is expected to expand the scope of use of foil thrust bearings.

[0004] The bionic muscle pneumatic switch can be deformed by the air intake. The pneumatic bionic muscle made of rubber can adjust the diameter of the pneumatic bionic muscle by controlling the air intake, thereby adjusting the air supply condition of the foil thrust bearing and expanding the application range of the foil thrust bearing.

[0005] In some existing technical fields involving gas film applications, such as high-precision measuring instruments, gas bearing systems in aerospace equipment, etc., precise control of gas film thickness is crucial to the performance, stability and reliability of the equipment. Traditional methods of adjusting gas film thickness often require complex external control systems and precision sensors, which not only increase the cost and complexity of the equipment, but also make it difficult to achieve real-time and accurate adjustment under some special working conditions. Therefore, it is of great practical significance to develop a technology that can adaptively adjust the thickness of the gas film.

[0006] Organ-like elastic elements have unique retractable characteristics. Organ-like elastic elements are designed to draw on the structural and functional advantages of the organ and introduce its flexible deformation mechanism into the design of foil thrust bearings. Through material selection and structural design, when the bearing is working, it can change its own shape and mechanical properties according to the load changes and speed fluctuations under different working conditions, thereby dynamically adjusting the contact stress distribution, air film thickness and stiffness characteristics inside the bearing, and expanding the application range of foil thrust bearings. Summary of the invention:

[0007] The purpose of the present invention is to provide an organ-like elastic foil thrust bearing with controllable air supply. By adjusting the expansion degree of the bionic muscle pneumatic switch in the air supply hole, the size of the ventilation space inside the air supply hole can be adjusted in real time, and the air supply of each air supply hole can be independently controlled. Based on this, the air supply conditions of the foil thrust bearing can be flexibly adjusted according to the specific application scenarios and actual working conditions of the bearing. According to the high elastic characteristics of the organ-like elastic element, it can be adaptively adjusted according to the principles of gas dynamic pressure effect, elastic deformation and energy dissipation, thereby changing the thickness of the air film. During operation, as the rotor rotates, viscous gas enters the gap to form an air film. The change in air film pressure causes the organ-like elastic element to undergo elastic deformation. At the same time, the energy dissipation generated by its friction can stabilize the air film. These combined effects enable the organ-like elastic element to dynamically adjust its own state, and then accurately adjust the thickness of the air film to effectively meet the use requirements of the bearing under various complex working conditions.

[0008] In order to achieve the purpose of the present invention, the following technical solutions are proposed:

[0009] A thrust bearing with an organ-like elastic foil having controllable air supply, comprising: a bearing seat (1), an organ-like elastic element (2), a flat foil (3), and a bionic muscle pneumatic switch (4); the bearing seat (1) comprises a T-shaped mounting groove (1-1), an air supply through hole (1-2), a trapezoidal boss (1-3), and a bionic muscle pneumatic switch seat (1-4); the organ-like elastic element (2) comprises an organ-like elastic element air supply through hole (2-1), an organ-like wave foil (2-2), an installation The flat foil (3) comprises a foil plane (3-1) and a foil mounting buckle (3-2), the bionic muscle pneumatic switch (4) comprises a spring (4-1), an annular rubber sleeve (4-2), a sealing member (4-3), a pneumatic bionic muscle air supply hole (4-4) and a fixed end (4-5), characterized in that: the "T"-shaped mounting groove (1-1) and the trapezoidal boss (1-3) are evenly distributed alternately in the circumferential direction on the bearing seat (1) The air supply holes (1-2) are evenly distributed on the trapezoidal boss (1-3) along the radial direction, the bionic muscle pneumatic switch seat (1-4) is located at the outlet of the air supply holes (1-2), the organ-like elastic element (2) is located above the trapezoidal boss (1-3), the mounting buckle (2-4) is installed in the "T"-shaped mounting groove (1-1), the air supply holes (2-1) of the organ-like elastic element are evenly distributed on the organ-like wave foil (2-2) along the radial direction, and the flat foil (3) is located at the outlet of the air supply holes (1-2). Above the organ-like elastic element (2), the foil mounting buckle (3-2) is mounted in a "T"-shaped mounting groove (1-1), the bionic muscle pneumatic switch (4) is located in the air supply through hole (1-2) and the organ-like elastic element air supply through hole (2-1), the spring (4-1) is located in the annular rubber sleeve (4-2), the sealing element (4-3) is arranged at both ends of the annular rubber sleeve (4-2), and the fixed end (4-5) is mounted on the bionic muscle pneumatic switch seat (1-4).

[0010] Furthermore, the bearing seat (1), the flat foil (3) and the spring (4-1) are made of alloy materials, the accordion-like elastic element (2) is made of a high elastic modulus composite material, and the annular rubber sleeve (4-2) and the seal (4-3) are made of rubber materials.

[0011] Furthermore, the diameter of the annular rubber sleeve (4-2) is less than 50% of the diameter of the air supply hole (1-2).

[0012] Features of the present invention:

[0013] The organ-like elastic element (2) adopts the characteristics of an organ-like bellows structure, imitates the expansion and contraction principle of an organ-like bellows, and has adaptive adjustment capability; the organ-like elastic element (2) uses a composite material with a high elastic modulus and good wear resistance, which not only ensures appropriate deformation and structural stability when subjected to force, but also prolongs the service life and improves reliability; the bionic muscle pneumatic switch (4) simulates the contraction and relaxation mechanism of biological muscles, can accurately respond to changes in external air supply, and accurately adjust the mechanical output; in the air supply control of the foil thrust bearing, the expansion of the annular rubber sleeve (4-2) is first controlled by the external air supply of the pneumatic bionic muscle air supply hole (4-4), and the internal support force is provided by the spring (4-1), and then the internal space size of the annular rubber sleeve (4-2) is adjusted by controlling the expansion degree of the annular rubber sleeve (4-2) in the air supply hole (1-2), and finally the gas enters from the air supply hole (1-2) and flows out from the organ-like elastic element air supply hole (2-1) to generate a stable air film, which effectively improves the stability and load-bearing capacity of the bearing and can adapt to complex working environments and working conditions. Description of the drawings:

[0014] Figure 1 It is a schematic diagram of the present invention;

[0015] Figure 2 An exploded view of the present invention;

[0016] Figure 3 The bearing seat of the present invention;

[0017] Figure 4 It is a partial enlarged view of the bearing seat of the present invention;

[0018] Figure 5 The organ-like elastic element of the present invention;

[0019] Figure 6 A flat foil of the present invention;

[0020] Figure 7 This is a cross-sectional view of the bionic muscle pneumatic switch of the present invention.

[0021] 1 bearing seat, 2 organ-type elastic element, 3 flat foil, 4 bionic muscle pneumatic switch, 1-1 "T"-shaped mounting groove, 1-2 air supply through hole, 1-3 trapezoidal boss, 1-4 bionic muscle pneumatic switch seat, 2-1 organ-type elastic element air supply through hole, 2-2 organ-type wave foil, 2-3 mounting plane, 2-4 mounting buckle, 3-1 foil plane, 3-2 foil mounting buckle, 4-1 spring, 4-2 annular rubber sleeve, 4-3 sealing element, 4-4 pneumatic bionic muscle air supply through hole, 4-5 fixed end. Specific implementation method:

[0022] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, wherein the illustrative embodiments and descriptions are only used to explain the present invention but are not intended to be improper limitations of the present invention.

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] For ease of description, spatially relative terms such as "under", "below", "on the lower surface of", "below", "lower end", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "under other devices or structures" or "under other devices or structures" will be positioned as "above other devices or structures" or "above other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein are interpreted accordingly.

[0026] Reference Figure 1 to Figure 7 .

[0027] A thrust bearing with an organ-like elastic foil having controllable air supply, comprising: a bearing seat (1), an organ-like elastic element (2), a flat foil (3), and a bionic muscle pneumatic switch (4); the bearing seat (1) comprises a T-shaped mounting groove (1-1), an air supply through hole (1-2), a trapezoidal boss (1-3), and a bionic muscle pneumatic switch seat (1-4); the organ-like elastic element (2) comprises an organ-like elastic element air supply through hole (2-1), an organ-like wave foil (2-2), an installation The flat foil (3) comprises a foil plane (3-1) and a foil mounting buckle (3-2), the bionic muscle pneumatic switch (4) comprises a spring (4-1), an annular rubber sleeve (4-2), a sealing member (4-3), a pneumatic bionic muscle air supply hole (4-4) and a fixed end (4-5), characterized in that: the "T"-shaped mounting groove (1-1) and the trapezoidal boss (1-3) are evenly distributed alternately in the circumferential direction on the bearing seat (1) The air supply holes (1-2) are evenly distributed on the trapezoidal boss (1-3) along the radial direction, the bionic muscle pneumatic switch seat (1-4) is located at the outlet of the air supply holes (1-2), the organ-like elastic element (2) is located above the trapezoidal boss (1-3), the mounting buckle (2-4) is installed in the "T"-shaped mounting groove (1-1), the air supply holes (2-1) of the organ-like elastic element are evenly distributed on the organ-like wave foil (2-2) along the radial direction, and the flat foil (3) is located at the outlet of the air supply holes (1-2). Above the organ-like elastic element (2), the foil mounting buckle (3-2) is mounted in a "T"-shaped mounting groove (1-1), the bionic muscle pneumatic switch (4) is located in the air supply through hole (1-2) and the organ-like elastic element air supply through hole (2-1), the spring (4-1) is located in the annular rubber sleeve (4-2), the sealing element (4-3) is arranged at both ends of the annular rubber sleeve (4-2), and the fixed end (4-5) is mounted on the bionic muscle pneumatic switch seat (1-4).

[0028] Furthermore, the bearing seat (1), the flat foil (3) and the spring (4-1) are made of alloy materials, the accordion-like elastic element (2) is made of a high elastic modulus composite material, and the annular rubber sleeve (4-2) and the seal (4-3) are made of rubber materials.

[0029] Furthermore, the diameter of the annular rubber sleeve (4-2) is less than 50% of the diameter of the air supply hole (1-2).

[0030] Compared with the foil thrust bearing, the technical solution of the present application has an accordion-like elastic foil thrust bearing with controllable air supply, which can independently adjust the air flow of each air supply hole of the bearing according to the specific application and working conditions, so that the foil thrust bearing has good load-bearing capacity and stability.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An organ-like elastic foil thrust bearing with controllable air supply, comprising: A bearing seat (1), an organ-like elastic element (2), a flat foil (3), and a bionic muscle pneumatic switch (4), wherein the bearing seat (1) comprises a "T"-shaped mounting groove (1-1), an air supply through hole (1-2), a trapezoidal boss (1-3), and a bionic muscle pneumatic switch seat (1-4), and the organ-like elastic element (2) comprises an organ-like elastic element air supply through hole (2-1), an organ-like wave foil (2-2), a mounting plane (2-3), and a mounting buckle (2-4). The flat foil (3) comprises a foil plane (3-1) and a foil mounting buckle (3-2); the bionic muscle pneumatic switch (4) comprises a spring (4-1), an annular rubber sleeve (4-2), a sealing member (4-3), a pneumatic bionic muscle air supply hole (4-4) and a fixed end (4-5); the feature is that the "T"-shaped mounting groove (1-1) and the trapezoidal boss (1-3) are evenly and alternately distributed on the bearing seat (1) in a circumferential direction; the air supply hole (1-2) The bionic muscle pneumatic switch seat (1-4) is located at the outlet of the air supply hole (1-2), the organ-like elastic element (2) is located above the trapezoidal boss (1-3), the mounting buckle (2-4) is installed in the "T"-shaped mounting groove (1-1), the air supply hole (2-1) of the organ-like elastic element is evenly distributed on the organ-like wave foil (2-2) along the radial direction, and the flat foil (3) is located at the outlet of the organ-like elastic element. The bionic muscle pneumatic switch (4) is located in the air supply through hole (1-2) and the air supply through hole (2-1) of the accordion-like elastic element, the spring (4-1) is located in the annular rubber sleeve (4-2), the sealing member (4-3) is arranged at both ends of the annular rubber sleeve (4-2), and the fixed end (4-5) is installed on the bionic muscle pneumatic switch seat (1-4).

2. The accordion-like elastic foil thrust bearing with controllable air supply according to claim 1, characterized in that: The bearing seat (1), the flat foil (3) and the spring (4-1) are made of alloy materials, the accordion-like elastic element (2) is made of a high elastic modulus composite material, and the annular rubber sleeve (4-2) and the sealing element (4-3) are made of rubber materials.

3. The accordion-like elastic foil thrust bearing with controllable air supply according to claim 1, characterized in that: The diameter of the annular rubber sleeve (4-2) is less than 50% of the diameter of the air supply through hole (1-2).

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