Vertical air suspension bearing

Abstract

A vertical air suspension bearing is characterized by comprising an air suspension rotor shaft, an air suspension shaft seat and an air injection hole, the air suspension rotor shaft is vertically clamped on the air suspension shaft seat; and the air injection hole is formed in a part, which is tightly adjacent to the air suspension rotor shaft, of the air suspension shaft seat. Through the design that the air suspension rotor shaft is vertically clamped on the air suspension shaft seat, stable support and accurate positioning are provided for the air suspension rotor shaft, meanwhile, the air suspension and rotation of the air suspension rotor shaft are realized in combination with the action of the air injection hole, the operation efficiency of a system is improved, and the service life of the system is prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of bearings, and particularly relates to a vertical air suspension bearing. Background Technique

[0002] Air suspension bearings mainly rely on gas (usually air) as a lubricant, and support the rotor by forming a stable air film to achieve non-contact rotation. However, this non-contact support method also brings problems of relatively low load-carrying capacity and stiffness. In high-power application scenarios, it is usually required that the bearing can withstand high loads and large torques. Due to the fact that the load-carrying capacity of the air suspension bearing is limited by the thickness and stability of the air film, it may not meet these requirements. In addition, the static and dynamic stability problems of the air suspension bearing may be more prominent during high-power operation, increasing the risk of bearing failure.

[0003] In order to solve the above problems, the utility model proposes a vertical air suspension bearing. Through the design and optimization of vertical air suspension, the problems of load-carrying capacity and stability existing in air suspension bearings in high-power applications can be effectively solved, providing a reliable and efficient solution for the suspension support of high-power equipment. Summary of the Invention

[0004] The utility model provides a vertical air suspension bearing, which can effectively solve the problems of load-carrying capacity and stability existing in air suspension bearings in high-power applications.

[0005] Specifically described as follows: A vertical air suspension bearing includes an air suspension rotor shaft, an air suspension housing, and air injection holes; the air suspension rotor shaft is vertically clamped on the air suspension housing; the air injection holes are arranged at a position on the air suspension housing that is closely adjacent to the air suspension rotor shaft.

[0006] Further, the air suspension rotor shaft includes the upper part of the air suspension rotor shaft, the supporting part of the air suspension rotor shaft, and the lower part of the air suspension rotor shaft; the air suspension housing is provided with a placement groove of the air suspension housing and a positioning groove of the air suspension housing that penetrates up and down; the bottom of the placement groove of the air suspension housing is communicated with the positioning groove of the air suspension housing; the lower part of the air suspension rotor shaft is inserted into the positioning groove of the air suspension housing; the supporting part of the air suspension rotor shaft is seamlessly clamped on the placement groove of the air suspension housing; the air injection holes are arranged on the placement groove of the air suspension housing and the positioning groove of the air suspension housing.

[0007] Further, the positioning groove of the air suspension housing is a cylindrical cavity, which matches the cylindrical structure of the lower part of the air suspension rotor shaft, and the diameter of the cylindrical cavity of the positioning groove of the air suspension housing is larger than the diameter of the cylindrical structure of the lower part of the air suspension rotor shaft.

[0008] Further, the bottom of the support portion of the air suspension rotor shaft is a disc, and the placement groove of the air suspension shaft seat is a disc groove with a diameter slightly larger than the diameter of the bottom of the support portion of the air suspension rotor shaft.

[0009] Further, the bottom of the support portion of the air suspension rotor shaft is a spherical segment surface, and the placement groove of the air suspension shaft seat is a spherical segment groove corresponding to the spherical segment surface at the bottom of the support portion of the air suspension rotor shaft; and the top of the spherical segment groove of the placement groove of the air suspension shaft seat is aligned with the top of the spherical segment surface at the bottom of the support portion of the air suspension rotor shaft.

[0010] Further, the bottom of the support portion of the air suspension rotor shaft is a conical surface, and the placement groove of the air suspension shaft seat is a conical groove corresponding to the conical surface at the bottom of the support portion of the air suspension rotor shaft; the top of the conical groove of the placement groove of the air suspension shaft seat is aligned with the top of the conical surface at the bottom of the support portion of the air suspension rotor shaft.

[0011] Compared with the prior art, the present utility model has the following advantages: Through the design of the air suspension shaft seat, the vertical placement of the air suspension bearing is realized, as well as the unique air film formation mechanism and pressure distribution design, which can significantly improve the bearing capacity of the bearing, so that the air film can still remain stable under high-speed rotation or high-load working conditions, effectively disperse and bear the weight and dynamic load from the equipment, and meet the operation requirements of high-power equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Attached Figure 1 is a schematic side view of the air suspension bearing of the present utility model.

[0014] Attached Figure 2 is a sectional view AA of the air suspension disc-shaped bearing of the present utility model.

[0015] Attached Figure 3 is an exploded view of the air suspension disc-shaped bearing of the present utility model.

[0016] Attached Figure 4 is a sectional view AA of the air suspension segment-shaped bearing of the present utility model.

[0017] Attached Figure 5 is an exploded view of the air suspension segment-shaped bearing of the present utility model.

[0018] Attached Figure 6It is the AA sectional view of the air suspension conical bearing of the present utility model.

[0019] Appendix Figure 7 It is the exploded view of the air suspension conical bearing of the present utility model.

[0020] The meanings represented by the serial numbers in the above figures are as follows: 1. Air suspension rotor shaft; 11. Upper part of the air suspension rotor shaft; 12. Support part of the air suspension rotor shaft; 13. Lower part of the air suspension rotor shaft; 2. Air suspension housing; 21. Placing groove of the air suspension housing; 22. Positioning groove of the air suspension housing; 3. Air jet hole. Specific embodiments

[0021] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below.

[0022] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them.

[0023] Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope protected by the present utility model. To make the embodiments easier to understand, multiple embodiments or implementation methods are provided below to illustrate the related devices, modules, and functions of the present utility model.

[0024] To enable the readers of this embodiment to quickly understand the implementation manner of the present utility model, the working principle of the present utility model will be described below.

[0025] As shown in the appendix Figures 1 - 2 As shown, a vertical air suspension bearing includes an air suspension rotor shaft 1, an air suspension housing 2, and an air jet hole 3; the air suspension rotor shaft 1 is vertically clamped on the air suspension housing 2, ensuring the stability and positioning accuracy of the air suspension rotor shaft 1 in the high-speed rotation or static state; the air jet hole 3 is provided at a position on the air suspension housing 2 that is directly clamped and closely adjacent to the air suspension rotor shaft 1, so that after the air suspension rotor shaft 1 is clamped and positioned on the air suspension housing 2, gas (such as compressed air) can be directly sprayed onto the surface of the air suspension rotor shaft 1, and the sprayed gas forms a stable air film around the air suspension rotor shaft 1, and the rotor shaft is suspended and rotated by using the dynamic characteristics of the gas to reduce friction and wear, improving the operating efficiency and service life of the system.

[0026] The air suspension rotor shaft 1 is divided into the upper part 11 of the air suspension rotor shaft, the supporting part 12 of the air suspension rotor shaft, and the lower part 13 of the air suspension rotor shaft; a placement groove 21 of the air suspension shaft seat and a positioning groove 22 of the air suspension shaft seat that penetrates up and down are provided on the air suspension shaft seat 2; the bottom of the placement groove 21 of the air suspension shaft seat communicates with the positioning groove 22 of the air suspension shaft seat; the lower part 13 of the air suspension rotor shaft is inserted into the positioning groove 22 of the air suspension shaft seat; the supporting part 12 of the air suspension rotor shaft is clamped on the placement groove 21 of the air suspension shaft seat; the air jet holes 3 are provided on the placement groove 21 of the air suspension shaft seat and the positioning groove 22 of the air suspension shaft seat. When high-pressure gas jets out through these air jet holes 3, it will act on the surface of the bottom of the supporting part 12 of the air suspension rotor shaft and the surface around the lower part 13 of the air suspension rotor shaft, and form a thin air film, using the kinetic characteristics of the gas to suspend the rotor shaft, so as to achieve contactless or low-friction rotation.

[0027] The positioning groove 22 of the air suspension shaft seat is a cylindrical cavity, which matches the cylindrical structure of the lower part 13 of the air suspension rotor shaft. The diameter of the cylindrical cavity of the positioning groove 22 of the air suspension shaft seat is larger than the diameter of the cylindrical structure of the lower part 13 of the air suspension rotor shaft, facilitating the direct insertion of the lower part 13 of the air suspension rotor shaft into the positioning groove 22 of the air suspension shaft seat.

[0028] The groove structure of the placement groove 21 of the air suspension shaft seat matches the bottom structure of the supporting part 12 of the air suspension rotor shaft, realizing the seamless clamping of the supporting part 12 of the air suspension rotor shaft on the placement groove 21 of the air suspension shaft seat.

[0029] As Figures 2 - 3 shown, the bottom of the supporting part 12 of the air suspension rotor shaft is a disc, and the groove structure of the placement groove 21 of the air suspension shaft seat is a disc groove with a diameter slightly larger than the diameter of the disc at the bottom of the supporting part 12 of the air suspension rotor shaft.

[0030] As Figures 4 - 5 shown, the bottom of the supporting part 12 of the air suspension rotor shaft is a spherical segment surface, and the groove structure of the placement groove 21 of the air suspension shaft seat is a spherical segment groove corresponding to the spherical segment surface at the bottom of the supporting part 12 of the air suspension rotor shaft; the top of the spherical segment groove of the placement groove 21 of the air suspension shaft seat is aligned with the top of the spherical segment surface at the bottom of the supporting part 12 of the air suspension rotor shaft.

[0031] As Figures 6 - 7 shown, the bottom of the supporting part 12 of the air suspension rotor shaft is a conical surface, and the groove structure of the placement groove 21 of the air suspension shaft seat is a conical groove corresponding to the conical surface at the bottom of the supporting part 12 of the air suspension rotor shaft; the top of the conical groove of the placement groove 21 of the air suspension shaft seat is aligned with the top of the conical surface at the bottom of the supporting part 12 of the air suspension rotor shaft.

[0032] The working principle of the air suspension bearing is based on the principle of gas dynamics, achieving a non-contact and low-friction rotational support. The specific working principle is as follows: After the system starts and stabilizes, the total weight of the air suspension rotor shaft 1 is mainly borne by the support portion 12 of the air suspension rotor shaft, and the support portion 12 is cleverly clamped in the placement groove 21 of the air suspension seat; this clamping structure not only ensures the stable positioning of the rotor shaft in the vertical direction but also provides the necessary contact surface for subsequent gas suspension. At the same time, the lower part 13 of the air suspension rotor shaft is precisely inserted into the positioning groove 22 of the air suspension seat, and this design further enhances the stability of the rotor shaft in the horizontal direction, preventing it from shifting or wobbling during rotation and ensuring the accuracy and smoothness of rotation. During operation, the air jet holes 3 on the placement groove 21 of the air suspension seat supply high-pressure gas through an external gas source. When the high-pressure gas jets out from the air jet holes, they quickly gather and form a stable air film between the bottom of the support portion 12 of the air suspension rotor shaft and the air jet holes. This air film uses the lift force generated by the gas pressure difference to completely suspend the air suspension rotor shaft 1 from physical contact, achieving a frictionless and wear-free rotational environment. As the air suspension rotor shaft 1 is suspended, the air suspension seat 2 begins to finely adjust the local pressure of the high-pressure gas ejected from the air jet holes 3 of the placement groove 21 of the air suspension seat and the positioning groove 22 of the air suspension seat through a complex control system. This adjustment process aims to maintain the stability and thickness of the air film while ensuring the dynamic balance of the rotor shaft during rotation. By changing the local pressure distribution, the system can respond in real time to the rotation state of the rotor shaft and fine-tune it to achieve stable and high-speed rotation.

[0033] In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0034] It can be understood that the above embodiments are exemplary and should not be construed as limitations on the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A vertical air suspension bearing, characterized in that: It comprises an air suspension rotor shaft, an air suspension shaft seat and an air jet hole; the air suspension rotor shaft is vertically clamped on the air suspension shaft seat; the air jet hole is arranged on the air suspension shaft seat at a position closely adjacent to the air suspension rotor shaft.

2. A vertical air bearing according to claim 1, characterized in that: The air-suspended rotor shaft includes the upper part of the air-suspended rotor shaft, the supporting part of the air-suspended rotor shaft and the lower part of the air-suspended rotor shaft; the air-suspended shaft seat is provided with a placement groove of the air-suspended shaft seat and a positioning groove of the air-suspended shaft seat that passes through from top to bottom; the bottom of the placement groove of the air-suspended shaft seat is connected to the positioning groove of the air-suspended shaft seat; the lower part of the air-suspended rotor shaft is inserted into the positioning groove of the air-suspended shaft seat; the supporting part of the air-suspended rotor shaft is seamlessly clamped on the placement groove of the air-suspended shaft seat; the air jet hole is arranged on the placement groove of the air-suspended shaft seat and the positioning groove of the air-suspended shaft seat.

3. A vertical air bearing according to claim 2, characterized in that: The positioning groove of the air suspension shaft seat is a cylindrical cavity, which matches the cylindrical structure at the bottom of the air suspension rotor shaft. The diameter of the cylindrical cavity of the positioning groove of the air suspension shaft seat is larger than the diameter of the cylindrical structure at the bottom of the air suspension rotor shaft.

4. A vertical air bearing according to claim 2, characterized in that: The bottom of the support part of the air suspension rotor shaft is a disc, and the placement groove of the air suspension shaft seat is a disc groove with a diameter slightly larger than the diameter of the disc at the bottom of the support part of the air suspension rotor shaft.

5. A vertical air bearing according to claim 2, characterized in that: The bottom of the support portion of the air suspension rotor shaft is a spherical segment surface, and the placement groove of the air suspension shaft seat is a spherical segment groove corresponding to the spherical segment surface of the bottom of the support portion of the air suspension rotor shaft; The top of the spherical segment groove of the placement groove of the air suspension shaft seat is aligned with the top of the spherical segment surface of the bottom of the support part of the air suspension rotor shaft.

6. A vertical air bearing according to claim 2, characterized in that: The bottom of the support part of the air-suspended rotor shaft is a conical surface, and the placement groove of the air-suspended shaft seat is a conical groove corresponding to the conical surface of the bottom of the support part of the air-suspended rotor shaft; the top of the conical groove of the placement groove of the air-suspended shaft seat is aligned with the top of the conical surface of the bottom of the support part of the air-suspended rotor shaft.

Images