WO2024046192A1 - 一种筒式可倾滑动轴承 - Google Patents

一种筒式可倾滑动轴承 Download PDF

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Publication number
WO2024046192A1
WO2024046192A1 PCT/CN2023/114551 CN2023114551W WO2024046192A1 WO 2024046192 A1 WO2024046192 A1 WO 2024046192A1 CN 2023114551 W CN2023114551 W CN 2023114551W WO 2024046192 A1 WO2024046192 A1 WO 2024046192A1
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WO
WIPO (PCT)
Prior art keywords
bearing
ring
static ring
static
elastic member
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2023/114551
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English (en)
French (fr)
Inventor
林坤
孙立宾
李少斌
兰勇
伍俊
江锋
肖柏洋
魏彦强
高家驹
吴光焱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongfang Electric Machinery Co Ltd DEC
Original Assignee
Dongfang Electric Machinery Co Ltd DEC
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 Dongfang Electric Machinery Co Ltd DEC filed Critical Dongfang Electric Machinery Co Ltd DEC
Priority to EP23859225.7A priority Critical patent/EP4582708A4/en
Publication of WO2024046192A1 publication Critical patent/WO2024046192A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F16C17/03—Sliding-contact bearings for exclusively rotary movement for radial load only with tiltably-supported segments, e.g. Michell 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
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/02—Sliding-contact bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F16C17/03—Sliding-contact bearings for exclusively rotary movement for radial load only with tiltably-supported segments, e.g. Michell bearings
    • F16C17/035—Sliding-contact bearings for exclusively rotary movement for radial load only with tiltably-supported segments, e.g. Michell bearings the segments being integrally formed with, or rigidly fixed to, a support-element
    • 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
    • F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
    • F16C17/24—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety
    • 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
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F16C27/063—Sliding contact 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
    • 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact 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
    • F16C2360/00—Engines or pumps

Definitions

  • This application relates to the technical field of transmission bearings, especially to the field of sliding bearings, and more specifically to a cylindrical tilting sliding bearing.
  • Shielded motors are a type of motor used to transport highly toxic, corrosive, radioactive, flammable, explosive, valuable liquids and liquids that may cause major harm if leaked.
  • the canned motor is directly connected to the impeller of the pump through the motor shaft to form a canned pump.
  • the canned pump is a sealless pump.
  • the pump and drive motor are sealed in a pressure vessel filled with the pumped medium. This pressure vessel only has a static seal.
  • the rotating sealing device of the centrifugal pump is eliminated, so it can be completely leak-free.
  • Bearings are key components of shielded motors, providing support for the rotation of the motor rotor.
  • the space of canned motors is small, especially small chemical canned pumps. Due to space limitations, cylindrical sliding bearings are generally used, and the pump transport medium is used for lubrication and cooling.
  • cylindrical bearings have a simple structure, they have poor adaptability to working conditions. When the unit deviates from the rated working conditions, the bearings cannot adapt to the possible bending and swing of the rotor, resulting in increased vibration of the unit, a significant increase in vibration noise, and even worse. This may cause serious accidents in which the motor bearings are damaged and unable to rotate.
  • the utility model patent with publication number CN207470604U discloses a radial sliding bearing, which uses an oil pressure controller to push the tilting pad to deflect toward the journal, so that the gap between the tilting pad and the journal is in an appropriate range, thereby It ensures that the tiltable tiles can also establish a stable and reliable oil film force, effectively avoiding tile chatter and improving the working stability of the tiles.
  • this application proposes a cylindrical tilting sliding bearing for shielded motors.
  • the bearing can be realized while retaining the cylindrical structure of the bearing.
  • the tilting and tilting structure can adapt to the bending and swing of the rotor when the unit deviates from the rated operating conditions, making the bearing load more evenly distributed and avoiding bearing damage caused by local load concentration.
  • the overall structure of the bearing is relatively simple and compact, especially suitable for equipment with small space.
  • a cylindrical tilting sliding bearing includes a bearing seat, a bearing static ring and a bearing moving ring.
  • the bearing static ring is installed in the bearing seat, and the bearing moving ring is installed on the bearing static ring. There is a gap between the bearing static ring and the bearing seat.
  • An elastic support mechanism is provided. Under the action of the elastic support mechanism, the bearing static ring can tilt in the bearing seat along the radial direction of the bearing.
  • the elastic support mechanism includes an adjustment screw and an elastic member.
  • the elastic member is arranged on the bearing static ring.
  • the ring and the bearing seat are provided with threaded holes, the threaded part of the adjusting screw is arranged in the threaded hole, and the head is set against the surface of the elastic member.
  • the elastic member is provided with an inner hole, and the head of the adjusting screw is embedded in the inner hole.
  • the outer surface of the bearing static ring is provided with a static ring protective sleeve, and an elastic support mechanism is provided between the static ring protective sleeve and the bearing seat.
  • the static ring protective sleeve is provided with a groove, and the elastic member is arranged in the groove.
  • the elastic support mechanism is arranged symmetrically along the circumferential direction of the bearing.
  • the elastic member is a disc spring or a spring washer.
  • the static ring protective sleeve is connected to the bearing static ring as a whole through a thermal sleeve fit.
  • bearing static ring is a whole ring structure.
  • This application uses a special support structure to realize the tilting of the bearing while retaining the bearing cylinder structure.
  • the tilting structure can adapt to the bending and swing of the rotor when the unit deviates from the rated operating condition, making the bearing load more evenly distributed. , to avoid bearing damage caused by local load concentration.
  • the cylindrical tilting sliding bearing of this application has a more compact overall structure under the condition that the bearing static ring can be tilted radially.
  • the bearing static ring has a full circle structure.
  • the overall structure of the sliding bearing is simple to process and is suitable for equipment with small space. is especially applicable.
  • Figure 1 is a schematic structural diagram of the cylindrical tilting sliding bearing of the present application.
  • Figure 2 is a C-C cross-sectional view in Figure 1;
  • Figure 3 is an enlarged view of part I in Figure 2.
  • Bearings are key components of shielded motors, providing support for the rotation of the motor rotor.
  • the space of canned motors is small, especially small chemical canned pumps. Due to space limitations, cylindrical sliding bearings are generally used, and the pump transport medium is used for lubrication and cooling.
  • cylindrical bearings have a simple structure, they have poor adaptability to working conditions. When the unit deviates from the rated operating conditions, the bearings cannot adapt to the possible bending and swing of the rotor, resulting in increased vibration of the unit, a significant increase in vibration noise, and even worse. This may cause serious accidents in which the motor bearings are damaged and unable to rotate.
  • this embodiment provides a cylindrical tilting sliding bearing for shielded motors.
  • the bearing can be tilted while retaining the cylindrical structure of the bearing.
  • the tilting structure can adapt to the deviation of the unit. The bending and swinging of the rotor under rated operating conditions make the bearing load more evenly distributed and avoid bearing damage caused by local load concentration.
  • the bearing structure mainly includes a bearing seat 1, a bearing static ring 2 and a bearing moving ring 3.
  • the bearing static ring 2 is installed on Inside the bearing seat 1, and the bearing static ring 2 is a whole ring structure, the bearing moving ring 3 is installed on the bearing static ring 2, the bearing moving ring 3 is provided with a main shaft 8 in the inner hole, and the bearing moving ring 3 follows the main shaft 8 rotate together in the bearing seat 1 under the action of external driving force; further, an elastic support mechanism 4 is provided between the bearing static ring 2 and the bearing seat 1, and the elastic support mechanism 4 can move along the radial direction of the bearing. Deformation and compression occur, and under the action of the elastic support mechanism 4, the bearing stationary ring 2 can tilt in the bearing seat 1 along the radial direction of the bearing.
  • the elastic support mechanism 4 mainly includes an adjusting screw 41 and an elastic member 42.
  • the elastic member 42 is arranged on the bearing static ring 2.
  • the bearing seat 1 is processed with threaded holes in the radial direction.
  • the threaded portion of the screw 41 is screwed into the threaded hole, and the head of the adjusting screw 41 passes through the threaded hole and is against the surface of the elastic member 42 to exert pressure on the elastic member 42 .
  • the above-mentioned entire bearing structure realizes the radial, axial and circumferential constraints on the bearing static ring 2.
  • the bearing seat 1 and the static bearing ring 2 together constitute the static support component of the sliding bearing
  • the moving bearing ring 3 and the main shaft 8 constitute the rotating component of the sliding bearing
  • the main shaft 8 rotates under the action of external driving force
  • the moving bearing ring 3 rotates together with the main shaft 8.
  • the static bearing ring 2 and the bearing seat 1 serve as static support components to support the main shaft 8 and the moving bearing ring 3.
  • the rotating component composed of the main shaft 8 and the bearing moving ring 3 will bend and swing in the radial direction of the sliding bearing.
  • the elastic member 42 can move in the bearing.
  • the adjusting screw 41 is threadedly connected to the bearing seat 1.
  • the degree of compression of the elastic member 42 by the adjusting screw can be changed, thereby adjusting the radial direction of the bearing static ring 2. degree of inclination.
  • This embodiment discloses a cylindrical tilting sliding bearing. Based on the above-mentioned Embodiment 1, this embodiment further limits the structure of the sliding bearing, as follows.
  • the bearing static ring 2 is generally made of ceramics, in order to protect the bearing static ring 2, this embodiment is provided with a static ring protective sleeve 6 on the outer surface of the bearing static ring 2 , the elastic support mechanism 4 is arranged between the static ring protective sleeve 6 and the bearing seat 1.
  • the elastic member 42 is provided on the outer surface of the static ring protective sleeve 6, and an inner hole 5 is processed on the elastic member 42.
  • the inner hole 5 is arranged along the axial direction of the elastic member 42.
  • the head of the adjusting screw 41 is embedded in the inner hole 5
  • the shoulder formed between the head and the threaded portion abuts against the elastic member 42 .
  • the inner hole structure on the elastic member 42 can prevent the bearing static ring 2 and the static ring protective sleeve 6 from axially coming out of the bearing seat 1, thereby achieving axial fixation.
  • a groove 7 is processed on the outer circumference of the static ring protective sleeve 6, and an elastic member 42 is arranged in the groove 7.
  • the number of elastic support mechanisms 4 is at least two, and the elastic support mechanisms 4 are symmetrically arranged along the circumferential direction of the bearing.
  • the static ring protective sleeve 6 is connected to the bearing static ring 2 through a thermal sleeve or other fixing methods to form a whole.
  • the elastic member 42 may be a specific elastic structural member such as a disc spring or a spring washer.
  • the static ring protective sleeve 6 is arranged in the bearing seat 1 through a clearance fit, and there is a small clearance fit between the static ring protective cover 6 and the bearing seat 1 .
  • the terms "setting”, “installation” and “connection” should be understood in a broad sense.
  • it can be a fixed connection or a removable connection.
  • Detachable connection, or integral connection 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 components.
  • the specific meanings of the above terms in this application can be understood on a case-by-case basis.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Support Of The Bearing (AREA)

Abstract

本申请涉及传动轴承技术领域，公开了一种筒式可倾滑动轴承，包括轴承座、轴承静环以及轴承动环，轴承静环安装在轴承座内，轴承动环安装在轴承静环上，所述轴承静环与轴承座之间设置有弹性支撑机构，在弹性支撑机构的作用下，轴承静环能够在轴承座内沿轴承的径向方向倾斜，所述弹性支撑机构包括调节螺钉和弹性件，所述弹性件设置在轴承静环上，轴承座上设置有螺纹孔，调节螺钉的螺纹部分设置在螺纹孔中，头部抵设在弹性件的表面。本申请通过一种特殊的弹性支撑结构，在保留轴承筒式结构的前提下实现轴承可倾，可倾结构可适应机组偏离额定工况时转子的弯曲和摆动，使轴承载荷分布更加均匀，同时轴承整体结构比较简单紧凑，适用于空间狭小的设备。

Description

一种筒式可倾滑动轴承 技术领域
 本申请涉及传动轴承技术领域，尤其涉及滑动轴承领域，更具体的说，涉及一种筒式可倾滑动轴承。
 背景技术
 屏蔽电机是用于输送剧毒性、腐蚀性、放射性、易燃易爆、贵重液体以及泄露后会造成重大危害液体的一种电机。屏蔽电机通过电机轴与泵的叶轮直接连接组成屏蔽泵，而屏蔽泵是一种无密封泵，泵和驱动电机被密封在一个被泵送介质充满的压力容器内，此压力容器只有静密封，取消了离心泵具有的旋转密封装置，故能做到完全无泄漏。
 轴承是屏蔽电机的关键部件，为电机转子的旋转提供支撑。屏蔽电机空间狭小，尤其是小型化工屏蔽泵由于空间所限一般采用筒式滑动轴承，并利用泵输送介质进行润滑和冷却。筒式轴承虽结构简单但对工况适应能力较差，当机组偏离额定工况运行时，轴承无法适应转子可能发生的弯曲和摆动，导致机组振动加大，振动噪声明显增加，更有甚者引发电机轴承损坏无法旋转的严重事故。
 公开号为CN207470604U的实用新型专利公开了一种径向滑动轴承，通过油压控制器推动可倾瓦块向轴颈偏移，使可倾瓦块与轴颈之间的间隙处于合适范围，从而保证可倾瓦块也能建立起稳定、可靠的油膜力，有效避免瓦块颤振情况，改善瓦块的工作稳定性。
 上述现有技术虽然也涉及滑动轴承结构，并且实现了瓦块沿轴承径向可倾的效果，但是上述滑动轴承结构复杂，需要的空间较大。 
 发明内容
 为了解决上述现有技术中存在的问题和不足，本申请提出了一种针对屏蔽电机的筒式可倾滑动轴承，通过一种特殊的支撑结构，在保留轴承筒式结构的前提下实现轴承可倾，可倾结构可适应机组偏离额定工况时转子的弯曲和摆动，使轴承载荷更加均匀分布，避免局部载荷集中引起轴承损坏，同时轴承整体结构比较简单紧凑，尤其适用于空间狭小的设备。
 为了实现上述发明目的，本申请的技术方案具体如下： 
一种筒式可倾滑动轴承，包括轴承座、轴承静环以及轴承动环，轴承静环安装在轴承座内，轴承动环安装在轴承静环上，所述轴承静环与轴承座之间设置有弹性支撑机构，在弹性支撑机构的作用下，轴承静环能够在轴承座内沿轴承的径向方向倾斜，所述弹性支撑机构包括调节螺钉和弹性件，所述弹性件设置在轴承静环上，轴承座上设置有螺纹孔，调节螺钉的螺纹部分设置在螺纹孔中，头部抵设在弹性件的表面。
 进一步地，所述弹性件上设置有内孔，调节螺钉的头部嵌入所述内孔中。
 进一步地，所述轴承静环的外表面设置有静环保护套，弹性支撑机构设置在静环保护套与轴承座之间。
 进一步地，所述静环保护套上设置有凹槽，所述弹性件设置在凹槽内。 
 进一步地，所述弹性支撑机构沿轴承圆周方向对称设置。
 进一步地，所述弹性件为碟簧或弹簧垫片。
 进一步地，所述静环保护套通过热套配合的方式与轴承静环连接为一个整体。
 进一步地，所述静环保护套与轴承座之间间隙配合。
 进一步地，所述轴承静环为整环结构。 
 本申请的有益效果：
（1）本申请通过一种特殊的支撑结构，在保留轴承筒式结构的前提下实现轴承可倾，可倾结构可适应机组偏离额定工况时转子的弯曲和摆动，使轴承载荷更加均匀分布，避免局部载荷集中引起轴承损坏。
 （2）本申请的筒式可倾滑动轴承在满足轴承静环径向可倾的条件下，整体结构更加紧凑，轴承静环为整圆结构，滑动轴承整体结构加工简单，对于空间狭小的设备来说尤其适用。
 附图说明
 本申请的前述和下文具体描述在结合以下附图阅读时变得更清楚，附图中：
图1为本申请筒式可倾滑动轴承结构示意图；
图2为图1中C-C剖视图；
图3为图2中I部放大图。
 附图中：
1、轴承座；2、轴承静环；3、轴承动环；4、弹性支撑机构；5、内孔；6、静环保护套；7、凹槽；8、主轴；41、调节螺钉；42、弹性件。
 实施方式
 为了使本领域的技术人员更好地理解本申请中的技术方案，下面将通过几个具体的实施例来进一步说明实现本申请发明目的的技术方案，需要说明的是，本申请要求保护的技术方案包括但不限于以下实施例。基于本申请中的实施例，本领域技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都应当属于本申请保护的范围。
 实施例1
轴承是屏蔽电机的关键部件，为电机转子的旋转提供支撑。屏蔽电机空间狭小，尤其是小型化工屏蔽泵由于空间所限一般采用筒式滑动轴承，并利用泵输送介质进行润滑和冷却。筒式轴承虽结构简单但对工况适应能力较差，当机组偏离额定工况运行时，轴承无法适应转子可能发生的弯曲和摆动，导致机组振动加大，振动噪声明显增加，更有甚者引发电机轴承损坏无法旋转的严重事故。
 基于此，本实施例提供了一种针对屏蔽电机的筒式可倾滑动轴承，通过一种特殊的支撑结构，在保留轴承筒式结构的前提下实现轴承可倾，可倾结构可适应机组偏离额定工况时转子的弯曲和摆动，使轴承载荷更加均匀分布，避免局部载荷集中引起轴承损坏。
 本实施例公开了一种筒式可倾滑动轴承，参照说明书附图1和图2，该轴承结构主要包括轴承座1、轴承静环2以及轴承动环3，其中，轴承静环2安装在轴承座1内，并且轴承静环2为一个整环结构，所述轴承动环3安装在轴承静环2上，轴承动环3上的内孔中设置有主轴8，轴承动环3跟随主轴8在外部驱动力的作用下，在轴承座1内一起转动；进一步地，所述轴承静环2与轴承座1之间设置有弹性支撑机构4，该弹性支撑机构4能够沿轴承的径向产生变形压缩，在弹性支撑机构4的作用下，所述轴承静环2能够在轴承座1内沿轴承的径向方向倾斜。
 参照说明书附图3，所述弹性支撑机构4主要包括调节螺钉41和弹性件42，所述弹性件42设置在轴承静环2上，所述轴承座1上沿径向加工有螺纹孔，调节螺钉41的螺纹部分旋入螺纹孔中，并且调节螺钉41的头部穿过螺纹孔抵设在弹性件42的表面，对弹性件42施压。上述整个轴承结构实现对轴承静环2的径向、轴向以及圆周方向的约束。
 在本实施例中，轴承座1和轴承静环2共同构成滑动轴承的静止支撑部件，轴承动环3和主轴8组成滑动轴承的转动部件，主轴8在外部驱动力的作用转动，轴承动环3跟随主轴8一起转动，轴承静环2和轴承座1作为静止支撑部件对主轴8以及轴承动环3起到支撑作用。当机组偏离额定工况运行时，主轴8以及轴承动环3组成的转动部件会在滑动轴承的径向产生弯曲和摆动，当转动部件在径向摆动或弯曲后，由于弹性件42可以在轴承的径向产生变形，因此弹性件42对轴承静环2的径向约束是非刚性的，可以使得轴承静环2在轴承座1内，跟随主轴8和轴承动环3沿轴承的径向产生倾斜，最终使轴承的载荷更加均匀分布，避免局部载荷集中引起轴承损坏。
 在本实施例中，调节螺钉41与轴承座1螺纹连接，通过调节调节螺钉41旋入轴承座1的长度，能够改变调节螺钉对弹性件42的压缩程度，从而调节轴承静环2在径向的倾斜程度。
 实施例2
本实施例公开了一种筒式可倾滑动轴承，在上述实施例1的基础上，本实施例对滑动轴承的结构做出了进一步的限定，具体如下。
 参照说明书附图1和图2，由于轴承静环2一般是采用陶瓷制作而成的，因此，为了保护轴承静环2，本实施例在轴承静环2的外表面设置有静环保护套6，弹性支撑机构4则设置在静环保护套6与轴承座1之间。
 进一步地，参照说明书附图3，所述弹性件42设置在静环保护套6的外表面，所述弹性件42上加工有内孔5，所述内孔5沿弹性件42的轴向设置，调节螺钉41的头部嵌入所述内孔5中，头部与螺纹部分之间形成的台肩抵设在弹性件42上。在本实施例中，弹性件42上的内孔结构可以防止轴承静环2和静环保护套6从轴承座1中轴向脱出，从而实现轴向的固定。
 进一步地，参照说明书附图3，为了使得整体结构更加紧凑，所述静环保护套6的外圆上加工有凹槽7，弹性件42设置在所述凹槽7中。 
 参照说明书附图2，为了保证轴承结构的稳定性，所述弹性支撑机构4的数量至少为两个，并且该弹性支撑机构4沿轴承的圆周方向对称设置。
 在本实施例中，需要说明的是，所述静环保护套6通过热套或其它固定方式与轴承静环2连接，形成一个整体。
 在本实施例中，需要说明的是，所述弹性件42可以是碟簧或弹簧垫片等具体弹性的结构件。
 在本实施例中，需要说明的是，所述静环保护套6通过间隙配合的方式设置在所述轴承座1内，并且静环保护套6与轴承座1之间是小间隙配合。
 在本申请中，当泵或电机类设备在偏离额定工况运行时，由于水力或电磁力的变化，将导致轴承动环3随主轴8的偏斜和摆动而发生偏斜，即轴承动环3与轴承静环2之间发生非同心的偏斜，此时由于静环保护套6和轴承静环2与轴承座1之间的非刚性连接，使静环保护套6和轴承静环2相对于轴承座1内孔发生沿轴承径向的微幅偏斜，补偿轴承动环3与轴承静环2之间的偏斜，避免二者之间局部载荷剧烈变化，从而提高了轴承的寿命。
 在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“前”、“后”、 “左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请保护范围的限制。
 在本申请的描述中，还需要说明的是，除非另有明确的规定和限定，术语“设置”、 “安装”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；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。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
 以上所述，仅是本申请的较佳实施例，并非对本申请做任何形式上的限制，凡是依据本申请的技术实质对以上实施例所作的任何简单修改、等同变化，均落入本申请的保护范围之内。 

Claims (9)

  1.  一种筒式可倾滑动轴承，包括轴承座（1）、轴承静环（2）以及轴承动环（3），轴承静环（2）安装在轴承座（1）内，轴承动环（3）安装在轴承静环（2）上，所述轴承静环（2）与轴承座（1）之间设置有弹性支撑机构（4），在弹性支撑机构（4）的作用下，轴承静环（2）能够在轴承座（1）内沿轴承的径向方向倾斜，其特征在于，所述弹性支撑机构（4）包括调节螺钉（41）和弹性件（42），所述弹性件（42）设置在轴承静环（2）上，轴承座（1）上设置有螺纹孔，调节螺钉（41）的螺纹部分设置在螺纹孔中，头部抵设在弹性件（42）的表面。
  2.  根据权利要求1所述的一种筒式可倾滑动轴承，其特征在于，所述弹性件（42）上设置有内孔（5），调节螺钉（41）的头部嵌入所述内孔（5）中。
  3.  根据权利要求1所述的一种筒式可倾滑动轴承，其特征在于，所述轴承静环（2）的外表面设置有静环保护套（6），弹性支撑机构（4）设置在静环保护套（6）与轴承座（1）之间。
  4.  根据权利要求3所述的一种筒式可倾滑动轴承，其特征在于，所述静环保护套（6）上设置有凹槽（7），所述弹性件（42）设置在凹槽（7）内。
  5.  根据权利要求1所述的一种筒式可倾滑动轴承，其特征在于，所述弹性支撑机构（4）沿轴承圆周方向对称设置。
  6.  根据权利要求1所述的一种筒式可倾滑动轴承，其特征在于，所述弹性件（42）为碟簧或弹簧垫片。
  7.  根据权利要求3所述的一种筒式可倾滑动轴承，其特征在于，所述静环保护套（6）通过热套配合的方式与轴承静环（2）连接为一个整体。
  8.  根据权利要求3所述的一种筒式可倾滑动轴承，其特征在于，所述静环保护套（6）与轴承座（1）之间间隙配合。
  9.  根据权利要求1所述的一种筒式可倾滑动轴承，其特征在于，所述轴承静环（2）为整环结构。
PCT/CN2023/114551 2022-08-30 2023-08-24 一种筒式可倾滑动轴承 Ceased WO2024046192A1 (zh)

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