WO2024016738A1 - 叠片式箔片动压轴承及轴系 - Google Patents

叠片式箔片动压轴承及轴系 Download PDF

Info

Publication number
WO2024016738A1
WO2024016738A1 PCT/CN2023/086936 CN2023086936W WO2024016738A1 WO 2024016738 A1 WO2024016738 A1 WO 2024016738A1 CN 2023086936 W CN2023086936 W CN 2023086936W WO 2024016738 A1 WO2024016738 A1 WO 2024016738A1
Authority
WO
WIPO (PCT)
Prior art keywords
elastic
cylinder
laminations
dynamic pressure
pressure bearing
Prior art date
Application number
PCT/CN2023/086936
Other languages
English (en)
French (fr)
Inventor
聂慧凡
毕刘新
候炎恒
付建伟
郭宏伟
沙宏磊
俞天野
Original Assignee
天津飞旋科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 天津飞旋科技股份有限公司 filed Critical 天津飞旋科技股份有限公司
Publication of WO2024016738A1 publication Critical patent/WO2024016738A1/zh

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F16C17/024—Sliding-contact bearings for exclusively rotary movement for radial load only with flexible leaves to create hydrodynamic wedge, e.g. radial foil bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings

Definitions

  • This application relates to the field of bearings, for example, to a laminated foil dynamic pressure bearing and a shaft system.
  • Foil dynamic pressure bearings are key supporting components of rotating machinery shaft systems, especially suitable for high speed, light load, high temperature, low temperature and oil-free working conditions.
  • Common foil dynamic pressure bearings are mainly composed of top foil, corrugated foil and bearing sleeves. There are two friction pairs, namely top foil-corrugated foil friction pair and corrugated foil-bearing sleeve friction pair. Due to the limited friction pairs, the energy dissipated by the entire foil dynamic pressure bearing through frictional contact is limited, the damping effect is not ideal, and the high-speed and stable operation of the rotor cannot be ensured.
  • corrugated foils As far as corrugated foils are concerned, structural parameters such as pitch and half-chord length cannot be adjusted after processing is completed, so the stiffness characteristics cannot be changed.
  • the corrugated foil has a single structure, and a single piece of corrugated foil cannot form an elastic support structure that requires complex changes in the axial and circumferential directions.
  • This application provides a laminated foil dynamic pressure bearing, which can solve the technical problem that structural parameters such as corrugated foil pitch and half-chord length cannot be adjusted and the stiffness characteristics cannot be changed after processing is completed.
  • an embodiment of the present application provides a laminated foil dynamic pressure bearing, including a top foil and an elastic cylinder;
  • the elastic cylinder includes at least two elastic laminations, and the elastic laminations are arranged along the axial direction of the elastic cylinder;
  • the elastic lamination includes a connecting piece and a plurality of elastic pieces.
  • the elastic pieces are arranged along the circumferential direction of the elastic cylinder.
  • the elastic pieces are connected to the connecting piece.
  • the elastic pieces are connected to the top foil.
  • the outer side walls are in contact with each other, and the elastic member can deform when receiving a force along the radial direction of the elastic cylinder.
  • an embodiment of the present application provides a shaft system.
  • Figure 1 shows a schematic diagram of the overall structure of a laminated foil dynamic pressure bearing provided in Embodiment 1 of the present application;
  • Figure 2 shows a schematic structural diagram of elastic laminations in a laminated foil dynamic pressure bearing provided in Embodiment 1 of the present application;
  • Figure 3 shows a schematic structural diagram of the first cylinder section in a laminated foil dynamic pressure bearing provided in Embodiment 1 of the present application;
  • Figure 4 shows a schematic structural diagram of the second cylinder section in a laminated foil dynamic pressure bearing provided in Embodiment 1 of the present application;
  • Figure 5 shows a schematic structural diagram of the third cylinder section in a laminated foil dynamic pressure bearing provided in Embodiment 1 of the present application;
  • Figure 6 shows a schematic structural diagram of the fourth cylinder section in a laminated foil dynamic pressure bearing provided in Embodiment 1 of the present application;
  • Figure 7 shows a schematic diagram of two adjacent elastic laminations overlapping in a laminated foil dynamic pressure bearing provided in Embodiment 1 of the present application;
  • Figure 8 shows a schematic structural diagram of elastic laminations in a laminated foil dynamic pressure bearing provided in Embodiment 2 of the present application
  • Figure 9 shows a schematic diagram of the cooperation relationship between two adjacent elastic laminations in a laminated foil dynamic pressure bearing provided in Embodiment 2 of the present application;
  • Figure 10 shows a schematic structural diagram of an elastic cylinder in a specific implementation of a laminated foil dynamic pressure bearing provided in Embodiment 2 of the present application.
  • connection In this application, unless otherwise clearly stated and limited, the terms “installation”, “connection”, “connection”, “fixing” and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements.
  • connection connection
  • fixing and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include one or more of these features.
  • plurality means two or more than two, unless otherwise explicitly and specifically limited.
  • This embodiment provides a laminated foil dynamic pressure bearing, specifically a laminated foil dynamic pressure bearing with adjustable stiffness and damping (hereinafter referred to as "bearing").
  • the bearing is composed of a top foil 100 and an elastic cylinder 200.
  • the elastic cylinder 200 is arranged around the top foil 100 and has the functions of a corrugated foil and a bearing sleeve.
  • the elastic cylinder 200 includes at least two elastic laminations 210 .
  • the elastic lamination 210 is composed of a connecting piece 211 and a plurality of elastic members 212 , and the plurality of elastic laminations 210 are arranged along the axial direction of the elastic cylinder 200 .
  • the connecting piece 211 is arranged along the circumferential direction of the elastic cylinder 200 .
  • a plurality of elastic members 212 are arranged along the circumferential direction of the elastic cylinder 200, and each elastic member 212 is connected to the connecting member 211 to form a whole.
  • the elastic member 212 is in contact with the outer side wall of the top foil 100 , and the elastic member 212 can deform when receiving a force along the radial direction of the elastic cylinder 200 .
  • Each elastic lamination 210 making up the elastic cylinder 200 is independent of each other.
  • the elastic members 212 of two adjacent elastic laminations 210 have relative displacement during deformation, forming a new friction pair, which can enhance damping and improve friction loss. performance characteristics.
  • the frictional resistance experienced by the elastic members 212 during deformation can be changed, thereby improving the stiffness of the entire elastic cylinder 200. control.
  • a variety of complex elastic cylinders 200 can be stacked by adjusting the relative position of each elastic lamination 210, resulting in complex changes in the axial and circumferential directions. elastic support structure.
  • the elastic cylinder 200 is arranged in a cylindrical shape.
  • the connecting member 211 is annular.
  • the elastic cylinder 200 can also be configured in a square cylinder shape.
  • the connecting piece 211 is in the shape of a square ring.
  • the connecting member 211 has a closed-loop structure.
  • the connecting member 211 may also have an open-loop structure and be disconnected at a preset position.
  • the elastic member 212 is in a strip shape, and the elastic member 212 is deflected relative to the radial direction of the elastic cylinder 200 .
  • the first end of the elastic member 212 is the bottom end and is integrally formed with the connecting member 211 .
  • the second end of the elastic member 212 is the top end and is in contact with the outer wall of the top foil 100 .
  • the pressure exerted by the top foil 100 on the elastic member 212 is along the radial direction of the elastic cylinder 200.
  • the pressure intersects with the elastic member 212 obliquely, and there is a component force perpendicular to the length direction of the elastic member 212, so the elastic member 212 can be bent and deformed.
  • the laminates 210 can be combined to form a first barrel section 201, a second barrel section 202, a third barrel section 203 and a fourth barrel section 204.
  • the elastic barrel 200 is composed of the first barrel section 201, the second barrel section 202, the third barrel section 204. It is composed of one or more of the section 203 and the fourth barrel section 204.
  • the elastic members 212 of two adjacent elastic laminations 210 are deflected in the same direction, and the top ends of the elastic members 212 of the two adjacent elastic laminations 210 are aligned. At this time, the top ends of each elastic member 212 together form a long support surface to support the top foil 100, and the long side of the support surface is parallel to the center line of the bearing.
  • the elastic members 212 of two adjacent elastic laminations 210 deflect in the same direction, and the top ends of the elastic members 212 of the two adjacent elastic laminations 210 are along the elastic cylinder. 200 circumferential misalignment. At this time, the supporting surface formed by the top of each elastic member 212 is at a preset angle with the center line of the bearing.
  • the support surface in the second cylinder section 202 may be a right-hand helix, a left-hand helix, or a V-shaped, W-shaped or trapezoidally complex support surface composed of alternating right-hand helix and left-hand helix.
  • the elastic members 212 of two adjacent elastic laminations 210 are deflected in opposite directions, and the top ends of the elastic members 212 of the two adjacent elastic laminations 210 are aligned. At this time, the top ends of each elastic member 212 together form a long support surface, and the long side of the support surface is parallel to the center line of the bearing.
  • the elastic members 212 of two adjacent elastic laminations 210 are deflected in opposite directions, and the top ends of the elastic members 212 of the two adjacent elastic laminations 210 are along the elastic cylinder. 200 circumferential misalignment. At this time, the supporting surface formed by the top of each elastic member 212 is at a preset angle with the center line of the bearing.
  • the supporting surface in the fourth barrel section 204 can be a right-hand helix, a left-hand helix, or a complex configuration such as a V-shape, a W-shape or a trapezoid consisting of alternating right-hand helix and left-hand helix. support surface.
  • the elastic cylinder 200 is composed of a third cylinder section 203 and two fourth cylinder sections 204 .
  • the third cylinder section 203 and the fourth cylinder section 204 are arranged along the axial direction of the elastic cylinder 200 , and the third cylinder section 203 is located between the two fourth cylinder sections 204 .
  • the supporting surface of one of the fourth barrel sections 204 is in the form of right-hand spiral, and the supporting surface of the other fourth barrel section 204 is in the form of left-hand spiral.
  • the elastic cylinder 200 in the above-mentioned bearing is stacked by multiple independent elastic laminations 210, and the elastic laminations 210 generate multiple overlapping contact areas 220 with adjacent elastic laminations 210 during the stacking process. .
  • the elastic members 212 of two adjacent elastic laminations 210 are relatively displaced during deformation, and a friction pair is formed in each overlapping contact area 220 .
  • the number of friction pairs is much larger than that of foil dynamic pressure bearings in related technologies, which can greatly enhance damping and significantly improve friction and energy consumption characteristics.
  • each elastic lamination 210 is pre-tightened along the axial direction of the bearing using pre-tightening components such as springs, rubber, bolts, etc., and during the pre-tightening process, the elastic members 212 of two adjacent elastic laminations 210 are By adjusting the pressure between them, the frictional resistance encountered by the elastic member 212 during deformation can be changed, thereby changing the stiffness and damping characteristics of the entire elastic cylinder 200 .
  • pre-tightening components such as springs, rubber, bolts, etc.
  • the elastic cylinder 200 is split into elastic laminations 210, by adjusting the relative position of each elastic lamination 210, the first cylinder section 201, the second cylinder section 202, and the third cylinder can be formed with different structures.
  • the sections 203 and the fourth cylinder section 204 are further combined to form various complex elastic cylinders 200, forming an elastic support structure with complex changing requirements in the axial and circumferential directions.
  • the shape of the support surface formed by the top of each elastic member 212 can also be freely combined to support the top foil 100 at any angle to prevent end leakage caused by collapse of the top foil 100 and thereby avoid reduction in the bearing capacity.
  • the material is strip
  • the bearing size is large, the arch wave formed size after the entire corrugated foil is stamped is difficult to detect, and is easily affected by the flatness of the entire corrugated foil, increasing the inspection cost.
  • only the top foil 100 and the elastic lamination 210 need to be produced and assembled, and the top foil 100 and the elastic lamination 210 have a simple structure and are easy to process and assemble.
  • This embodiment also provides a shaft system, including a rotating shaft and the above-mentioned laminated foil dynamic pressure bearing, and the rotating shaft is penetrated in the top foil 100 .
  • Embodiment 1 Please refer to FIG. 8 .
  • the elastic member 212 is arranged in an arch shape, and the dome of the elastic member 212 is in contact with the outer side wall of the top foil 100 .
  • the pressure exerted by the top foil 100 on the elastic member 212 deforms the elastic member 212 along the radial direction of the elastic cylinder 200.
  • the elastic member 212 has a fixed end and a free end away from the fixed end, and the fixed end of the elastic member 212 is fixedly connected to the connecting member 211 . With the free end provided, the elastic member 212 is easier to deform.
  • the elastic members 212 of two adjacent elastic laminations 210 are arranged crosswise.
  • the cross arrangement here means that along the circumferential direction of the connecting member 211, the elastic member 212 of one elastic lamination 210 extends from the fixed end to the free end, and the elastic member 212 of the other elastic lamination 210 extends from the free end to the fixed end. .
  • the elastic members 212 deform, the relative displacement between the elastic members 212 of two adjacent elastic laminations 210 is greater, and the friction energy dissipation characteristics are better.
  • the elastic members 212 of two adjacent elastic laminations 210 can be displaced along the circumferential direction of the elastic cylinder 200 to form a spiral support surface, which will not be described again here.

Abstract

一种叠片式箔片动压轴承及轴系，叠片式箔片动压轴承包括顶箔（100）和弹性筒体（200）；弹性筒体（200）包括至少两个弹性叠片（210），弹性叠片（210）沿弹性筒体（200）的轴向排列；弹性叠片（210）包括连接件（211）和多个弹性件（212），弹性件（212）与连接件（211）相连，弹性件（212）与顶箔（100）的外侧壁抵接。相邻两个弹性叠片（210）的弹性件（212）在变形时存在相对位移，形成新的摩擦副。

Description

叠片式箔片动压轴承及轴系
本申请要求申请日为2022年7月20日、申请号为202210849960.X的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及轴承领域，例如涉及一种叠片式箔片动压轴承及轴系。
背景技术
箔片动压轴承是旋转机械轴系的关键支撑部件，尤其适用于高转速、轻负载、高温、低温以及无油工况。
常见的箔片动压轴承主要由顶箔、波箔和轴承套筒构成，存在两个摩擦副，分别是顶箔-波箔摩擦副和波箔-轴承套筒摩擦副。由于摩擦副有限，整个箔片动压轴承通过摩擦接触耗散的能量有限，阻尼效果不理想，无法确保转子高速稳定运行。
就波箔而言，节距和半弦长等结构参数在加工完成后无法调整，故刚度特性无法改变。此外，波箔的结构单一，单片波箔无法形成沿轴向和周向上有复杂变化需求的弹性支撑结构。
发明内容
本申请提供了一种叠片式箔片动压轴承，能够解决波箔节距和半弦长等结构参数在加工完成后无法调整，刚度特性无法改变的技术问题。
第一方面，本申请一实施例提供了一种叠片式箔片动压轴承，包括顶箔和弹性筒体；
其中，所述弹性筒体包括至少两个弹性叠片，所述弹性叠片沿所述弹性筒体的轴向排列；
所述弹性叠片包括连接件和多个弹性件，所述弹性件沿所述弹性筒体的周向排列，所述弹性件与所述连接件相连，所述弹性件与所述顶箔的外侧壁抵接，所述弹性件可在受到沿所述弹性筒体的径向的力时变形。
第二方面，本申请一实施例提供了一种轴系。
包括上述叠片式箔片动压轴承。
附图说明
图1示出了本申请实施例一提供的一种叠片式箔片动压轴承的整体结构示意图；
图2示出了本申请实施例一提供的一种叠片式箔片动压轴承中弹性叠片的结构示意图；
图3示出了本申请实施例一提供的一种叠片式箔片动压轴承中第一筒节的结构示意图；
图4示出了本申请实施例一提供的一种叠片式箔片动压轴承中第二筒节的结构示意图；
图5示出了本申请实施例一提供的一种叠片式箔片动压轴承中第三筒节的结构示意图；
图6示出了本申请实施例一提供的一种叠片式箔片动压轴承中第四筒节的结构示意图；
图7示出了本申请实施例一提供的一种叠片式箔片动压轴承中相邻两个弹性叠片重叠的示意图；
图8示出了本申请实施例二提供的一种叠片式箔片动压轴承中弹性叠片的结构示意图；
图9示出了本申请实施例二提供的一种叠片式箔片动压轴承中相邻两个弹性叠片之间的配合关系示意图；
图10示出了本申请实施例二提供的一种叠片式箔片动压轴承中弹性筒体在一个具体实施方式下的结构示意图。
主要元件符号说明：
100-顶箔；200-弹性筒体；201-第一筒节；202-第二筒节；203-第三筒节；
204-第四筒节；210-弹性叠片；211-连接件；212-弹性件；220-重叠接触区域。
具体实施方式
在本申请中，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。相反，当元件被 称作“直接在”另一元件“上”时，不存在中间元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。
在本申请中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在模板的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在限制本申请。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
实施例1
请参阅图1，本实施例提供一种叠片式箔片动压轴承，具体为一种刚度阻尼可调整的叠片式箔片动压轴承(以下简称为“轴承”)。该轴承由顶箔100和弹性筒体200组成，其中，弹性筒体200环绕顶箔100设置，兼具波箔和轴承套筒的功能。
请一并参阅图1和图2，在一实施例中，弹性筒体200包括至少两个弹性叠片210。弹性叠片210由连接件211和多个弹性件212组成，且多个弹性叠片210沿弹性筒体200的轴向排列。
其中，连接件211沿弹性筒体200的周向设置。多个弹性件212沿弹性筒体200的周向排列，且每个弹性件212分别与连接件211相连，形成整体。此外，弹性件212与顶箔100的外侧壁抵接，弹性件212可在受到沿弹性筒体200的径向的力时变形。
组成弹性筒体200的各个弹性叠片210相互独立，相邻两个弹性叠片210的弹性件212在变形时存在相对位移，形成新的摩擦副，能够增强阻尼、提高摩擦耗 能特性。在此基础上，通过对相邻两个弹性叠片210的弹性件之间的压力进行调整，即可改变弹性件212在变形时所受到的摩擦阻力，进而实现对整个弹性筒体200的刚度的控制。此外，将弹性筒体200拆分为弹性叠片后，通过调整每个弹性叠片210的相对位置，能够堆叠出多种复杂的弹性筒体200，形成沿轴向和周向上有复杂变化需求的弹性支撑结构。
在本实施例中，弹性筒体200呈圆筒状设置。在一实施例中，连接件211为圆环形。
在本申请的另一实施例中，弹性筒体200也可以设置为方筒状。相应地，连接件211为方环形。
在本实施例中，连接件211为闭环结构。
在本申请的另一实施例中，连接件211也可以是开环结构，在预设位置断开。
在本实施例中，弹性件212呈条形，且弹性件212相对于弹性筒体200的径向偏转。弹性件212的第一端为底端，与连接件211一体成型，弹性件212的第二端为顶端，与顶箔100的外侧壁抵接。
当径向载荷通过顶箔100传递至弹性件212时，顶箔100施加于弹性件212的压力沿弹性筒体200的径向。该压力与弹性件212倾斜相交，存在垂直于弹性件212长度方向的分力，故能使弹性件212弯曲变形。
在一实施例中，根据相邻两个弹性叠片210中弹性件212的偏转方向是否相同，以及相邻两个弹性叠片210中弹性件212的顶端是否对齐，两个及以上数量的弹性叠片210可以组合形成第一筒节201、第二筒节202、第三筒节203和第四筒节204，弹性筒体200由第一筒节201、第二筒节202、第三筒节203和第四筒节204当中的一个或者多个组成。
请参阅图3，在第一筒节201中，相邻两个弹性叠片210的弹性件212沿相同的方向偏转，且相邻两个弹性叠片210的弹性件212的顶端对齐。此时，每个弹性件212的顶端共同构成长条状的支撑面，对顶箔100进行支撑，且支撑面的长边与轴承的中心线平行。
请参阅图4，在第二筒节202中，相邻两个弹性叠片210的弹性件212沿相同的方向偏转，且相邻两个弹性叠片210的弹性件212的顶端沿弹性筒体200的周向错位。此时，每个弹性件212的顶端所构成的支撑面与轴承的中心线成预设角度。
第二筒节202中的支撑面可以是右螺旋，也可以是左螺旋，还可以是右螺旋与左螺旋交替组成的V型、W型或梯形等复杂构型支撑面。
请参阅图5，在第三筒节203中，相邻两个弹性叠片210的弹性件212沿相反的方向偏转，且相邻两个弹性叠片210的弹性件212的顶端对齐。此时，每个弹性件212的顶端共同构成长条状的支撑面，且支撑面的长边与轴承的中心线平行。
请参阅图6，在第四筒节204中，相邻两个弹性叠片210的弹性件212沿相反的方向偏转，且相邻两个弹性叠片210的弹性件212的顶端沿弹性筒体200的周向错位。此时，每个弹性件212的顶端所构成的支撑面与轴承的中心线成预设角度。
与第二筒节202相似，第四筒节204中的支撑面可以是右螺旋，也可以是左螺旋，还可以是右螺旋与左螺旋交替组成的V型、W型或梯形等复杂构型支撑面。
在本实施例中，弹性筒体200由一个第三筒节203和两个第四筒节204组成。第三筒节203和第四筒节204沿弹性筒体200的轴向排列，且第三筒节203位于两个第四筒节204之间。其中一个第四筒节204的支撑面呈右螺旋，另一个第四筒节204的支撑面呈左螺旋。
请结合图7，上述轴承中的弹性筒体200由多个独立的弹性叠片210堆叠而成，且弹性叠片210在堆叠过程中与相邻的弹性叠片210产生多处重叠接触区域220。相邻两个弹性叠片210的弹性件212在变形时存在相对位移，在每一处重叠接触区域220内会形成摩擦副。摩擦副的数量远大于相关技术中的箔片动压轴承，能够大幅度地增强阻尼、显著提高摩擦耗能特性。
在此基础上，利用弹簧、橡胶、螺栓等预紧件沿轴承的轴向对每个弹性叠片210进行预紧，并在预紧过程中对相邻两个弹性叠片210的弹性件212之间的压力进行调整，即可改变弹性件212在变形时所受到的摩擦阻力，进而改变整个弹性筒体200的刚度和阻尼特性。
此外，将弹性筒体200拆分为弹性叠片210后，通过调整每个弹性叠片210的相对位置，能够形成结构各不相同的第一筒节201、第二筒节202、第三筒节203和第四筒节204，进而组合形成各种复杂的弹性筒体200，形成沿轴向和周向上有复杂变化需求的弹性支撑结构。其中，每个弹性件212的顶端所构成的支撑面的形状也可以自由组合，在任意角度对顶箔100进行支撑，防止顶箔100塌陷引起的端泄，进而避免轴承的承载能力降低。
最后，加工相关技术中的波箔时，通常由一整条带材在模具上冲出拱波依次相连的一整片波箔。这种一整片连续的波箔结构要求模具的尺寸必须大于轴承套筒的展开面积，因此要求模具做得比较大，同时要求模具形位公差很高，模具成本很高。同时要求一整片连续的波箔一次冲压成型，波箔的每个拱波成 型完整并且成型后不回弹。由于材料为带材，当轴承尺寸较大时，整片波箔冲压成型后的拱波成型尺寸不易检测，容易受整片波箔的平面度影响，检测成本增加。相比之下，生产上述轴承时只需生产顶箔100和弹性叠片210并进行组装，而顶箔100和弹性叠片210的结构简单，易于加工和装配。
本实施例还提供一种轴系，包括转轴和上述叠片式箔片动压轴承，且转轴穿设于顶箔100内。
实施例二
请参阅图8，与实施例一的不同之处在于，在本实施例中，弹性件212呈拱形设置，且弹性件212的拱顶与顶箔100的外侧壁抵接。当径向载荷通过顶箔100传递至弹性件212时，顶箔100施加于弹性件212的压力沿弹性筒体200的径向，使弹性件212变形。
在一实施例中，弹性件212具有固定端和远离固定端的自由端，且弹性件212的固定端与连接件211固定连接。在设置自由端的情况下，弹性件212更易于变形。
请参阅图9，在一实施例中，相邻两个弹性叠片210的弹性件212交叉布置。此处的交叉布置是指沿连接件211的周向上，其中一个弹性叠片210的弹性件212由固定端向自由端延伸，另一个弹性叠片210的弹性件212由自由端向固定端延伸。当弹性件212变形时，相邻两个弹性叠片210的弹性件212之间的相对位移更大，摩擦耗能特性更好。
请参阅图10，与实施例一类似，相邻两个弹性叠片210的弹性件212可以沿弹性筒体200的周向错位，形成螺旋形的支撑面，在此不作赘述。

Claims (10)

  1. 一种叠片式箔片动压轴承，包括顶箔和弹性筒体；
    其中，所述弹性筒体包括至少两个弹性叠片，所述弹性叠片沿所述弹性筒体的轴向排列；
    所述弹性叠片包括连接件和多个弹性件，所述弹性件沿所述弹性筒体的周向排列，所述弹性件与所述连接件相连，所述弹性件与所述顶箔的外侧壁抵接，所述弹性件可在受到沿所述弹性筒体的径向的力时变形。
  2. 根据权利要求1所述的叠片式箔片动压轴承，其中，所述弹性件呈条形，所述弹性件相对于所述弹性筒体的径向偏转，以在受到沿所述弹性筒体的径向的力时变形。
  3. 根据权利要求2所述的叠片式箔片动压轴承，其中，所述弹性筒体包括第一筒节，所述第一筒节包括至少两个所述弹性叠片，所述第一筒节内相邻两个所述弹性叠片的所述弹性件沿相同的方向偏转；
    所述弹性件具有与所述顶箔抵接的顶端，所述第一筒节内相邻两个所述弹性叠片的所述弹性件的顶端对齐。
  4. 根据权利要求2所述的叠片式箔片动压轴承，其中，所述弹性筒体包括第二筒节，所述第二筒节包括至少两个所述弹性叠片，所述第二筒节内相邻两个所述弹性叠片的所述弹性件沿相同的方向偏转；
    所述弹性件具有与所述顶箔抵接的顶端，所述第二筒节内相邻两个所述弹性叠片的所述弹性件的顶端沿所述弹性筒体的周向错位。
  5. 根据权利要求2所述的叠片式箔片动压轴承，其中，所述弹性筒体包括第三筒节，所述第三筒节包括至少两个所述弹性叠片，所述第三筒节内相邻两个所述弹性叠片的所述弹性件沿相反的方向偏转；
    所述弹性件具有与所述顶箔抵接的顶端，所述第三筒节内相邻两个所述弹性叠片的所述弹性件的顶端对齐。
  6. 根据权利要求2所述的叠片式箔片动压轴承，其中，所述弹性筒体包括第四筒节，所述第四筒节包括至少两个所述弹性叠片，所述第四筒节内相邻两个所述弹性叠片的所述弹性件沿相反的方向偏转；
    所述弹性件具有与所述顶箔抵接的顶端，所述第四筒节内相邻两个所述弹性叠片的所述弹性件的顶端沿所述弹性筒体的周向错位。
  7. 根据权利要求1所述的叠片式箔片动压轴承，其中，所述弹性件呈拱形，并设置为在受到沿所述弹性筒体的径向的力时变形，所述弹性件的拱顶与所述 顶箔抵接。
  8. 根据权利要求7所述的叠片式箔片动压轴承，其中，所述弹性件具有固定端和远离所述固定端的自由端，所述固定端与所述连接件相连。
  9. 根据权利要求8所述的叠片式箔片动压轴承，其中，相邻两个所述弹性叠片的所述弹性件交叉布置。
  10. 一种轴系，包括如权利要求1-9中任一项所述的叠片式箔片动压轴承。
PCT/CN2023/086936 2022-07-20 2023-04-07 叠片式箔片动压轴承及轴系 WO2024016738A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210849960.XA CN115076219B (zh) 2022-07-20 2022-07-20 一种叠片式箔片动压轴承及轴系
CN202210849960.X 2022-07-20

Publications (1)

Publication Number Publication Date
WO2024016738A1 true WO2024016738A1 (zh) 2024-01-25

Family

ID=83259582

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/086936 WO2024016738A1 (zh) 2022-07-20 2023-04-07 叠片式箔片动压轴承及轴系

Country Status (2)

Country Link
CN (1) CN115076219B (zh)
WO (1) WO2024016738A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115076219B (zh) * 2022-07-20 2022-11-15 天津飞旋科技股份有限公司 一种叠片式箔片动压轴承及轴系
CN115789076B (zh) * 2023-01-09 2023-05-02 天津飞旋科技股份有限公司 一种箔片动压轴承及旋转机械轴系
CN116838723B (zh) * 2023-09-04 2023-11-03 天津飞旋科技股份有限公司 一种轴承本体、箔片动压轴承及旋转机械轴系

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011144845A (ja) * 2010-01-13 2011-07-28 Shimadzu Corp 動圧気体軸受
CN209687919U (zh) * 2019-03-27 2019-11-26 博世汽车柴油系统有限公司 箔片空气轴承
JP2020197287A (ja) * 2019-06-05 2020-12-10 トヨタ紡織株式会社 動圧空気軸受
CN112879418A (zh) * 2021-03-19 2021-06-01 姚漠寒 一种径向动压空气轴承
CN113969938A (zh) * 2021-12-27 2022-01-25 天津飞旋科技股份有限公司 一种波箔组件、箔片动压空气轴承及轴系
CN115076219A (zh) * 2022-07-20 2022-09-20 天津飞旋科技股份有限公司 一种叠片式箔片动压轴承及轴系

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4401704B2 (ja) * 2003-07-14 2010-01-20 本田技研工業株式会社 フォイル式流体軸受
JP5781402B2 (ja) * 2010-09-28 2015-09-24 Ntn株式会社 フォイル軸受
JP2012072817A (ja) * 2010-09-28 2012-04-12 Ntn Corp フォイル軸受
JP5834503B2 (ja) * 2011-06-03 2015-12-24 株式会社Ihi 回転軸の支持構造
US20160208847A1 (en) * 2015-01-19 2016-07-21 Hamilton Sundstrand Corporation Quad foil journal air bearing
CN110566571A (zh) * 2019-08-09 2019-12-13 珠海格力电器股份有限公司 一种弹性箔片气体动压轴承
JP7276035B2 (ja) * 2019-09-19 2023-05-18 トヨタ紡織株式会社 動圧軸受
CN214617486U (zh) * 2021-03-19 2021-11-05 姚漠寒 一种径向动压空气轴承
KR102406531B1 (ko) * 2021-07-07 2022-06-08 하이코어 주식회사 정회전 및 역회전이 가능한 가스포일 베어링
CN114382775A (zh) * 2022-01-14 2022-04-22 珠海格力电器股份有限公司 气体动压径向轴承、压缩机和发动机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011144845A (ja) * 2010-01-13 2011-07-28 Shimadzu Corp 動圧気体軸受
CN209687919U (zh) * 2019-03-27 2019-11-26 博世汽车柴油系统有限公司 箔片空气轴承
JP2020197287A (ja) * 2019-06-05 2020-12-10 トヨタ紡織株式会社 動圧空気軸受
CN112879418A (zh) * 2021-03-19 2021-06-01 姚漠寒 一种径向动压空气轴承
CN113969938A (zh) * 2021-12-27 2022-01-25 天津飞旋科技股份有限公司 一种波箔组件、箔片动压空气轴承及轴系
CN115076219A (zh) * 2022-07-20 2022-09-20 天津飞旋科技股份有限公司 一种叠片式箔片动压轴承及轴系

Also Published As

Publication number Publication date
CN115076219A (zh) 2022-09-20
CN115076219B (zh) 2022-11-15

Similar Documents

Publication Publication Date Title
WO2024016738A1 (zh) 叠片式箔片动压轴承及轴系
JP5226979B2 (ja) 真空ポンプの軸の支持装置
US4274683A (en) Support element for compliant hydrodynamic journal bearings
US20070047858A1 (en) Foil journal bearing with bilinear stiffness spring
EP1740839B1 (en) Radial foil bearing
CN1107369C (zh) 用于异步电机的鼠笼转子
US4208076A (en) Compliant hydrodynamic bearing with improved support element
IT8224285A1 (it) Supporto idrodinamico con pellicola di fluido
JP2016092984A (ja) モータ用ロータ及びモータ
WO2023126021A2 (zh) 波箔组件、箔片动压空气轴承及轴系
CN102804554B (zh) 悬架结构
CN210623395U (zh) 箔片空气轴承
EP2959179A1 (en) Partitioned elastomeric journal bearing assemblies, systems and methods
CN108843685A (zh) 一种动压径向气体轴承
CN208702898U (zh) 一种动压径向气体轴承
CN115628264B (zh) 一种箔片式动压空气轴承及旋转机械轴系
CN113606140B (zh) 滚子组件、泵体组件和压缩机
CN105179462A (zh) 一种波箔型空气动压轴承
JP2006177542A (ja) スプリングフォイル軸受
WO2022067911A1 (zh) 径向气体箔片轴承
CN213478965U (zh) 一种挠性波纹联轴器
CN212672222U (zh) 一种箔片轴承
CN210003664U (zh) 一种多级弹性支撑组件及动压气体径向轴承
JP2017180684A (ja) フォイル軸受、およびターボ機械
CN115789085B (zh) 一种箔片动压空气轴承及轴系

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23841811

Country of ref document: EP

Kind code of ref document: A1