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WO2023097650A1 - Sealing device for rolling bearing, and rolling bearing - Google Patents

Sealing device for rolling bearing, and rolling bearing Download PDF

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Publication number
WO2023097650A1
WO2023097650A1 PCT/CN2021/135312 CN2021135312W WO2023097650A1 WO 2023097650 A1 WO2023097650 A1 WO 2023097650A1 CN 2021135312 W CN2021135312 W CN 2021135312W WO 2023097650 A1 WO2023097650 A1 WO 2023097650A1
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WO
WIPO (PCT)
Prior art keywords
sealing device
skeleton
rolling bearing
section
outer ring
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/CN2021/135312
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French (fr)
Chinese (zh)
Inventor
刘际轩
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.)
Schaeffler Technologies AG and Co KG
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Schaeffler Technologies AG and Co KG
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.)
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Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Priority to PCT/CN2021/135312 priority Critical patent/WO2023097650A1/en
Publication of WO2023097650A1 publication Critical patent/WO2023097650A1/en
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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces

Definitions

  • the invention relates to the technical field of sealing. More specifically, the invention relates to sealing arrangements for rolling bearings.
  • the sealing device of the rolling bearing usually consists of an integral skeleton and a rubber sealing lip connected to the skeleton.
  • Fig. 1 is a partial sectional view of an embodiment of a spherical roller bearing.
  • the spherical roller bearing includes an outer ring 110, an inner ring 120, two rows of rolling elements 130 between the inner ring 110 and the outer ring 120, and a cage between the outer ring 110 and the inner ring 120 140 , a guide ring 150 axially located between two rows of rolling elements 130 and two sealing devices 160 respectively fixed to two axial ends of the bearing.
  • the outer ring 110, the inner ring 120 and the guide ring 150 of the bearing are arranged concentrically.
  • the cage 140 separates the rolling elements 130 in the circumferential direction.
  • the outer ring 110 and the inner ring 120 of the bearing realize relative rotation through the rolling elements 130 .
  • Grease lubrication is usually used between the cage and the inner and outer rings of the bearing to achieve good relative rotation of the inner and outer rings of the bearing.
  • large-size bearings usually use a pair of sealing devices located at both ends of the axial direction. The sealing device is fixed on the outer surface of the outer ring of the bearing at one radial end, and abuts against the inner ring of the bearing at the other radial end.
  • the sealing device is fixed on the outer surface of the outer ring of the bearing at one radial end, and abuts against the inner ring of the bearing at the other radial end.
  • the cost of the seal also increases significantly.
  • One aspect of the present invention provides a sealing device for a rolling bearing, comprising: an annular skeleton including a plurality of skeleton sections joined in sequence, wherein each skeleton section includes first the engagement portion and the second engagement portion, the first engagement portion and the second engagement portion having mutually matching shapes such that a first engagement portion of one frame section can be form-fittingly engaged to a second engagement portion of an adjacent frame section; and an annular sealing lip connected to the plurality of carcass segments of the carcass and including a contact portion at an end radially remote from the carcass.
  • the first engaging portion has a radially extending convex shape
  • the second engaging portion has a radially extending groove shape
  • the groove shape of the second engaging portion is configured to at least partially wrap the convex shape of the first engaging portion, so that the first engaging portion and the second engaging portion engaged with each other do not move along the circumferential direction. separate.
  • each frame section further includes a slot at one end of the frame section in the radial direction
  • the sealing lip includes a connecting portion
  • the connecting portion of the sealing lip is inserted into the slots of a plurality of frame sections middle.
  • each skeleton section further includes an installation through hole extending in the axial direction.
  • each frame section has the same shape.
  • each frame section is integrally formed.
  • a rolling bearing comprising: an outer ring; an inner ring disposed radially inside the outer ring; a plurality of rolling elements disposed radially between the outer ring and the inner ring; and a bearing according to the present invention
  • the sealing device of an embodiment wherein the skeleton of the sealing device is connected to one of the outer ring and the inner ring, and the contact portion of the sealing lip of the sealing device is in contact with the other of the outer ring and the inner ring.
  • the rolling bearing further comprises a plurality of threaded connections, wherein each skeleton section of the skeleton is connected to one of the outer ring and the inner ring by a respective threaded connection.
  • the rolling bearing includes two rows of rolling bodies, and the rolling bearing includes a guide ring located between the two rows of rolling bodies in the axial direction.
  • a plurality of skeleton sections can be sequentially joined by the engaging portion to form an annular skeleton, which can be applied in a sealing device of a rolling bearing.
  • the sealing device of the rolling bearing can be manufactured and assembled more flexibly, which is advantageous in particular for large-sized rolling bearings.
  • the engaging portions of the skeleton sections may respectively have convex and groove shapes, which may simplify the assembly operation of the skeleton sections.
  • the groove of one engaging portion may at least partially wrap around the protrusion of the other engaging portion, whereby the relative movement of the two engaging portions engaged with each other in the circumferential direction is constrained so that the two are not separated in the circumferential direction.
  • the skeleton section can be integrally formed, which is beneficial to reduce the manufacturing cost of the skeleton section.
  • Each frame section can have the same shape, which can reduce the assembly cost of the individual frame components and reduce the possibility of assembly errors.
  • Fig. 1 is a partial sectional view of an embodiment of a spherical roller bearing.
  • Figure 2 is a perspective view of a rolling bearing according to some embodiments of the present invention.
  • Fig. 3 is a partial cross-sectional view of a rolling bearing according to some embodiments of the present invention.
  • Figure 4 is a perspective view of a sealing device according to some embodiments of the invention.
  • FIG. 5 is a partial cross-sectional view of a sealing device according to some embodiments of the present invention.
  • Figure 6 is a perspective view of a skeleton section of a sealing device according to some embodiments of the present invention.
  • FIG. 7 is a top view of a skeleton section of a sealing device according to some embodiments of the invention.
  • the invention provides a sealing device for a rolling bearing, especially a sealing device for a large-size rolling bearing.
  • FIG. 2 is a perspective view of a rolling bearing according to some embodiments of the present invention.
  • Fig. 3 is a partial cross-sectional view of a rolling bearing according to some embodiments of the present invention.
  • the rolling bearing includes an outer ring 10 , an inner ring 20 , two rows of rolling elements 30 , a cage 40 and a guide ring 50 .
  • the inner ring 20 is arranged radially inward of the outer ring 10 .
  • the outer ring 10 includes a radially inner raceway on its radially inner surface, and the inner ring 20 includes a radially outer raceway on its radially outer surface.
  • the cage 40 is provided between the outer ring 10 and the inner ring 20 in the radial direction.
  • the rolling elements 30 are held and circumferentially spaced apart by cages 40, respectively, and can roll between radially inner raceways and radially outer raceways.
  • guide ring 50 is disposed concentrically with outer ring 10 and inner ring 20 .
  • the guide ring 50 is arranged axially between the two rows of rolling elements 30 .
  • a guide ring 50 is disposed radially between the cage 40 and the inner ring 20 .
  • the guide ring 50 can also be arranged radially between the cage 40 and the outer ring 10 .
  • the rolling bearing further comprises a sealing device 60 .
  • the rolling bearing includes two sealing devices 60 respectively fixed to both ends of the rolling bearing in the axial direction. The structure of the sealing device will be described in detail below with reference to the accompanying drawings.
  • Figure 4 is a perspective view of a sealing device according to some embodiments of the invention.
  • 5 is a partial cross-sectional view of a sealing device according to some embodiments of the present invention.
  • the sealing device 60 includes a skeleton 70 and a sealing lip 80 .
  • the frame 70 includes a plurality of frame segments 71 .
  • a plurality of frame segments 71 may be sequentially joined in the circumferential direction to form an annular frame 70 . Therefore, the frame 70 has a segmented structure.
  • sealing lip 80 has a unitary annular configuration.
  • Figure 6 is a perspective view of a skeleton section of a sealing device according to some embodiments of the present invention.
  • 7 is a top view of a skeleton section of a sealing device according to some embodiments of the invention.
  • the skeleton section 71 includes engaging portions 72 and 73 located at both ends in the circumferential direction, respectively.
  • the joint portions 72 and 73 of different frame sections 71 may be detachably connected.
  • the engaging portion 72 has a radially extending convex shape
  • the engaging portion 73 has a radially extending groove shape.
  • the convex shape of the engagement portion 72 and the groove shape of the engagement portion 73 match each other.
  • the convex-shaped engagement portion 72 of one skeleton section 71 can be inserted into the groove-shaped engagement section 73 of the other skeleton section 71 in the radial direction.
  • the engaging portion 72 having a convex shape of one skeleton section 71 can be positively engaged with the engaging portion 73 having a groove shape of the other skeleton section 71 .
  • the groove shape of the engaging portion 73 may at least partially wrap the convex shape of the engaging portion 72 .
  • the convex shape of the engagement portion 72 has a generally arcuate outer profile
  • the groove shape of the engagement portion 73 also has a matching generally arcuate inner profile.
  • the arc of the generally arc-shaped outer profile of the engaging portion 72 is greater than 180 degrees
  • the arc of the generally arc-shaped inner profile of the engaging portion 73 is also greater than 180 degrees.
  • the wrapping of the engaging portion 73 by the engaging portion 72 can constrain the relative movement of the two engaging portions 72 and 73 engaged with each other in the circumferential direction.
  • the two skeleton sections 71 joined to each other cannot separate in the circumferential direction.
  • the engaging portions 72 and 73 respectively have substantially arcuate profiles.
  • the present invention is not limited thereto.
  • the engaging portions 72 and 73 respectively configured as protrusions and grooves may also have profiles of other shapes as long as they can engage with each other to constrain relative movement of each other in the circumferential direction.
  • the engaging portions 72 and 73 have the convex and groove shapes, respectively.
  • the present invention is not limited thereto.
  • the engaging portions 72 and 73 may also have other shapes, as long as the two can be engaged with each other to form a ring-shaped skeleton.
  • the engaging portion 72 described above having a convex shape is inserted into the engaging portion 73 having a groove shape in the radial direction.
  • the present invention is not limited thereto.
  • the joint parts 72 and 73 may also be detachably connected to each other in other ways, such as snap-fit connection, mortise and tenon connection, pin connection and the like.
  • the engaging portions 72 and 73 of the different skeleton sections 71 are detachably connected.
  • the present invention is not limited thereto.
  • the joint parts 72 and 73 can also be connected to each other without detachment, such as glued, welded and the like.
  • the skeleton section 71 further includes a locking groove 74 at one end in the radial direction.
  • the locking groove 74 is located at the radially inner end of the skeleton section 71 .
  • the sealing lip 80 includes a connection portion 81 and a contact portion 82 .
  • the sealing lip 80 can be connected to the respective frame section 71 via a connection 81 .
  • the connecting portion 81 of the sealing lip 80 is inserted into the engaging groove 74 of the skeleton section 71 .
  • each skeleton segment of the skeleton 70 is fixedly connected to the outer ring 10 of the rolling bearing, and the contact portion 82 (not shown in FIG. 2 ) of the sealing lip 80 is in contact with the rolling bearing.
  • the inner ring 20 contacts.
  • each skeleton section 71 of the skeleton 70 may be fixedly connected to the inner ring 10 of the rolling bearing, and the contact portion 82 of the sealing lip 80 is in contact with the outer ring 10 of the rolling bearing.
  • the rolling bearing further includes a plurality of threaded connections 90 through which the skeleton section 71 is fixedly connected to the outer ring 10 or the inner ring 20 .
  • the skeleton section 71 further includes an installation through hole 75 extending in the axial direction.
  • a threaded connection 90 connects the skeleton section 71 to the outer ring 10 through the mounting through hole 75 .
  • the threaded connection 90 can also connect the skeleton section 71 to the inner ring 20 through the mounting through hole 75 .
  • each frame segment 71 of frame 70 has the same shape. This reduces the assembly cost of the individual skeletal components and reduces the possibility of assembly errors.
  • the skeleton section 71 may be made of a metallic material, such as steel. In this case, the skeleton section 71 can be formed by stamping or other processes. In some embodiments, the skeleton section 71 may be made of a plastic material. In this case, the skeleton section 71 can be formed by injection molding or 3D printing.
  • the backbone section 71 is integrally formed. This makes it possible to reduce the manufacturing costs of the framework section and of the seal.
  • various parts of the frame section 71 can also be formed separately, for example, the joint parts 72 and 73 can be connected to the main body part of the frame section 71 by welding or the like.
  • sealing lip 80 may be made of rubber. In other embodiments, the sealing lip 80 can also be made of other elastic or flexible materials.
  • the sealing lip 80 is connected to the frame 70 by inserting the connecting portion 81 into the groove 74 of the frame section 71 .
  • the sealing lip 80 can also be connected to the frame section 71 of the frame 70 in other ways.
  • the sealing lip 80 may include a concave receiving portion, and may wrap a part of the skeleton section 71 by elastic deformation of the concave receiving portion, thereby being connected to the skeleton section 71 .
  • the rolling bearing employing the sealing device according to the embodiment of the present invention includes two rows of rolling elements.
  • the present invention is not limited thereto.
  • the sealing device can also be applied to a rolling bearing comprising only one row of rolling elements.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

A sealing device (60) for a rolling bearing, and a rolling bearing. The sealing device (60) comprises: an annular cage (70) comprising a plurality of cage sections (71) sequentially engaged with each other, wherein each cage section (71) comprises a first engagement part (72) and a second engagement part (73) which are respectively located on both ends in the circumferential direction of the cage section (71), and the first engagement part (72) and the second engagement part (73) have shapes matching each other, so that the first engagement part (72) of one cage section (71) can be matingly engaged with the second engagement part (73) of the adjacent cage section (71); and an annular sealing lip (80) connected to the plurality of cage sections (71) of the cage (70) and comprising a contact portion (82) radially located on the end away from the cage (70).

Description

用于滚动轴承的密封装置和滚动轴承Seals for rolling bearings and rolling bearings 技术领域technical field

本发明涉及密封技术领域。更具体地，本发明涉及用于滚动轴承的密封装置。The invention relates to the technical field of sealing. More specifically, the invention relates to sealing arrangements for rolling bearings.

背景技术Background technique

滚动轴承的密封装置通常包括整体骨架和连接到骨架的橡胶密封唇。图1是一种实施例的调心滚子轴承的部分截面图。如图1所示，调心滚子轴承包括外圈110、内圈120、位于内圈110和外圈120之间的两列滚动体130、位于外圈110和内圈120之间的保持架140、沿轴向位于两列滚动体130之间的导向环150和分别固定到轴承的两个轴向端的两个密封装置160。轴承的外圈110、内圈120和导向环150同心设置。保持架140将滚动体130沿周向分隔开。轴承的外圈110和内圈120通过滚动体130实现相对转动。The sealing device of the rolling bearing usually consists of an integral skeleton and a rubber sealing lip connected to the skeleton. Fig. 1 is a partial sectional view of an embodiment of a spherical roller bearing. As shown in Figure 1, the spherical roller bearing includes an outer ring 110, an inner ring 120, two rows of rolling elements 130 between the inner ring 110 and the outer ring 120, and a cage between the outer ring 110 and the inner ring 120 140 , a guide ring 150 axially located between two rows of rolling elements 130 and two sealing devices 160 respectively fixed to two axial ends of the bearing. The outer ring 110, the inner ring 120 and the guide ring 150 of the bearing are arranged concentrically. The cage 140 separates the rolling elements 130 in the circumferential direction. The outer ring 110 and the inner ring 120 of the bearing realize relative rotation through the rolling elements 130 .

在轴承的保持架与内外圈之间通常采用油脂润滑，以实现轴承内外圈良好的相对转动。为实现对润滑油脂的密封，大尺寸轴承通常采用分别位于轴向两端的一对密封装置。密封装置在径向一端固定到轴承的外圈的外表面上，密封装置在径向另一端抵接于轴承的内圈上。但是，随着轴承尺寸的增加，密封装置的成本也会显著提高。Grease lubrication is usually used between the cage and the inner and outer rings of the bearing to achieve good relative rotation of the inner and outer rings of the bearing. In order to achieve the sealing of lubricating grease, large-size bearings usually use a pair of sealing devices located at both ends of the axial direction. The sealing device is fixed on the outer surface of the outer ring of the bearing at one radial end, and abuts against the inner ring of the bearing at the other radial end. However, as the size of the bearing increases, the cost of the seal also increases significantly.

为此，需要一种成本降低的用于滚动轴承的密封装置。For this reason, a cost-reduced sealing arrangement for rolling bearings is required.

发明内容Contents of the invention

本发明的一个目的是提供一种成本降低的用于滚动轴承的密封装置和滚动轴承。本发明的另一目的是提供一种适合于大尺寸滚动轴承的密封装置。本发明的另一目的是提供一种便于安装的用于滚动轴承的密封装置和滚动轴承。It is an object of the present invention to provide a cost-reduced sealing arrangement for a rolling bearing and a rolling bearing. Another object of the present invention is to provide a sealing device suitable for large-sized rolling bearings. Another object of the present invention is to provide a sealing device for a rolling bearing and a rolling bearing which are easy to install.

本发明的一个方面提供一种用于滚动轴承的密封装置，包括：环形骨架，包括依次接合的多个骨架部段，其中每个骨架部段包括分别位于骨架部段在周向上的两端的第一接合部分和第二接合部分，第一接合部分和第二接合部分具有相互匹配的形状，使得一个骨架部段的第一接合部分能够形状配合地接合到相邻骨架部段的第二接合部分；和环形密封唇，其连接到骨架的多个骨架部段并且包括在径向上位于远离骨架的一端处的接触部。One aspect of the present invention provides a sealing device for a rolling bearing, comprising: an annular skeleton including a plurality of skeleton sections joined in sequence, wherein each skeleton section includes first the engagement portion and the second engagement portion, the first engagement portion and the second engagement portion having mutually matching shapes such that a first engagement portion of one frame section can be form-fittingly engaged to a second engagement portion of an adjacent frame section; and an annular sealing lip connected to the plurality of carcass segments of the carcass and including a contact portion at an end radially remote from the carcass.

根据本发明的实施例，第一接合部分具有沿径向延伸的凸起形状，并且第二接合部分具有沿径向延伸的凹槽形状。According to an embodiment of the present invention, the first engaging portion has a radially extending convex shape, and the second engaging portion has a radially extending groove shape.

根据本发明的实施例，第二接合部分的凹槽形状构造成能够至少部分地包裹第一接合部分的凸起形状，以使得相互接合的第一接合部分和第二接合部分不会沿周向分开。According to an embodiment of the present invention, the groove shape of the second engaging portion is configured to at least partially wrap the convex shape of the first engaging portion, so that the first engaging portion and the second engaging portion engaged with each other do not move along the circumferential direction. separate.

根据本发明的实施例，每个骨架部段还包括位于骨架部段在径向上的一端的卡槽，密封唇包括连接部，并且密封唇的连接部被嵌入到多个骨架部段的卡槽中。According to an embodiment of the present invention, each frame section further includes a slot at one end of the frame section in the radial direction, the sealing lip includes a connecting portion, and the connecting portion of the sealing lip is inserted into the slots of a plurality of frame sections middle.

根据本发明的实施例，每个骨架部段还包括沿轴向延伸的安装通孔。According to an embodiment of the present invention, each skeleton section further includes an installation through hole extending in the axial direction.

根据本发明的实施例，每个骨架部段具有相同的形状。According to an embodiment of the invention, each frame section has the same shape.

根据本发明的实施例，每个骨架部段是一体形成的。According to an embodiment of the invention, each frame section is integrally formed.

本发明的另一方面提供一种滚动轴承，包括：外圈；内圈，设置于外圈的径向内部；多个滚动体，沿径向设置在外圈和内圈之间；和根据本发明的实施例的密封装置，其中，密封装置的骨架连接到外圈和内圈中的一者，并且密封装置的密封唇的接触部与外圈和内圈中的另一者接触。Another aspect of the present invention provides a rolling bearing, comprising: an outer ring; an inner ring disposed radially inside the outer ring; a plurality of rolling elements disposed radially between the outer ring and the inner ring; and a bearing according to the present invention The sealing device of an embodiment, wherein the skeleton of the sealing device is connected to one of the outer ring and the inner ring, and the contact portion of the sealing lip of the sealing device is in contact with the other of the outer ring and the inner ring.

根据本发明的实施例，滚动轴承还包括多个螺纹连接件，其中骨架的每个骨架部段通过相应螺纹连接件连接到外圈和内圈中的一者。According to an embodiment of the invention, the rolling bearing further comprises a plurality of threaded connections, wherein each skeleton section of the skeleton is connected to one of the outer ring and the inner ring by a respective threaded connection.

根据本发明的实施例，滚动轴承包括两列滚动体，并且滚动轴承包括导向环，导向环在轴向上位于两列滚动体之间。According to an embodiment of the present invention, the rolling bearing includes two rows of rolling bodies, and the rolling bearing includes a guide ring located between the two rows of rolling bodies in the axial direction.

根据本发明的实施例，多个骨架部段可以通过接合部分依次接合以形成环形的骨架，该骨架可以应用于滚动轴承的密封装置中。由此，滚动轴承的密封装置可以更灵活地制造和装配，这特别对于大尺寸的滚动轴承是 有利的。骨架部段的接合部分可以分别具有凸起和凹槽形状，这可以简化骨架部段的装配操作。一个接合部分的凹槽可以至少部分地包裹另一接合部分的凸起，由此相互接合的两个接合部分沿周向的相对移动受到约束，从而两者不会沿周向分开。这有利于提高骨架和密封装置的装配便利性和运行稳定性。骨架部段可以一体地形成，这有利于降低骨架部段的制造成本。每个骨架部段可以具有相同的形状，这可以降低各个骨架部件的装配成本，降低装配错误的可能性。According to an embodiment of the present invention, a plurality of skeleton sections can be sequentially joined by the engaging portion to form an annular skeleton, which can be applied in a sealing device of a rolling bearing. As a result, the sealing device of the rolling bearing can be manufactured and assembled more flexibly, which is advantageous in particular for large-sized rolling bearings. The engaging portions of the skeleton sections may respectively have convex and groove shapes, which may simplify the assembly operation of the skeleton sections. The groove of one engaging portion may at least partially wrap around the protrusion of the other engaging portion, whereby the relative movement of the two engaging portions engaged with each other in the circumferential direction is constrained so that the two are not separated in the circumferential direction. This is beneficial to improve the assembly convenience and operation stability of the skeleton and the sealing device. The skeleton section can be integrally formed, which is beneficial to reduce the manufacturing cost of the skeleton section. Each frame section can have the same shape, which can reduce the assembly cost of the individual frame components and reduce the possibility of assembly errors.

附图说明Description of drawings

图1是一种实施例的调心滚子轴承的部分截面图。Fig. 1 is a partial sectional view of an embodiment of a spherical roller bearing.

图2是根据本发明的某些实施例的滚动轴承的透视图。Figure 2 is a perspective view of a rolling bearing according to some embodiments of the present invention.

图3是根据本发明的某些实施例的滚动轴承的局部截面图。Fig. 3 is a partial cross-sectional view of a rolling bearing according to some embodiments of the present invention.

图4是根据本发明的某些实施例的密封装置的透视图。Figure 4 is a perspective view of a sealing device according to some embodiments of the invention.

图5是根据本发明的某些实施例的密封装置的局部截面图。5 is a partial cross-sectional view of a sealing device according to some embodiments of the present invention.

图6是根据本发明的某些实施例的密封装置的骨架部段的透视图。Figure 6 is a perspective view of a skeleton section of a sealing device according to some embodiments of the present invention.

图7是根据本发明的某些实施例的密封装置的骨架部段的俯视图。7 is a top view of a skeleton section of a sealing device according to some embodiments of the invention.

具体实施方式Detailed ways

下文中，参照附图描述本发明的实施例。下面的详细描述和附图用于示例性地说明本发明的原理，本发明不限于所描述的优选实施例，本发明的范围由权利要求书限定。现参考示例性的实施方式详细描述本发明，一些实施例图示在附图中。以下描述参考附图进行，除非另有表示，否则在不同附图中的相同附图标记代表相同或类似的元件。以下示例性实施方式中描述的方案不代表本发明的所有方案。相反，这些方案仅是所附权利要求中涉及的本发明的各个方面的系统和方法的示例。Hereinafter, embodiments of the present invention are described with reference to the drawings. The following detailed description and accompanying drawings serve to illustrate the principles of the present invention. The present invention is not limited to the described preferred embodiments, but the scope of the present invention is defined by the claims. The invention will now be described in detail with reference to exemplary embodiments, some examples of which are illustrated in the accompanying drawings. The following description is made with reference to the drawings, and the same reference numerals in different drawings represent the same or similar elements unless otherwise indicated. The aspects described in the following exemplary embodiments do not represent all aspects of the present invention. Rather, these aspects are merely examples of systems and methods of the various aspects of the invention as recited in the appended claims.

本发明提供一种用于滚动轴承的密封装置，特别是用于大尺寸滚动轴承的密封装置。The invention provides a sealing device for a rolling bearing, especially a sealing device for a large-size rolling bearing.

图2是根据本发明的某些实施例的滚动轴承的透视图。图3是根据本发明的某些实施例的滚动轴承的局部截面图。在示例性实施例中，如图3 所示，滚动轴承包括外圈10、内圈20、两列滚动体30、保持架40和导向环50。内圈20设置在外圈10的径向内部。外圈10包括位于其径向内表面上的径向内滚道，内圈20包括位于其径向外表面上的径向外滚道。保持架40沿径向设置在外圈10和内圈20之间。滚动体30分别被保持架40保持和沿周向间隔开，并且可以在径向内滚道和径向外滚道之间滚动。Figure 2 is a perspective view of a rolling bearing according to some embodiments of the present invention. Fig. 3 is a partial cross-sectional view of a rolling bearing according to some embodiments of the present invention. In an exemplary embodiment, as shown in FIG. 3 , the rolling bearing includes an outer ring 10 , an inner ring 20 , two rows of rolling elements 30 , a cage 40 and a guide ring 50 . The inner ring 20 is arranged radially inward of the outer ring 10 . The outer ring 10 includes a radially inner raceway on its radially inner surface, and the inner ring 20 includes a radially outer raceway on its radially outer surface. The cage 40 is provided between the outer ring 10 and the inner ring 20 in the radial direction. The rolling elements 30 are held and circumferentially spaced apart by cages 40, respectively, and can roll between radially inner raceways and radially outer raceways.

在一些实施例中，导向环50与外圈10和内圈20同心地设置。导向环50沿轴向设置在两列滚动体30之间。在示例性实施例中，导向环50沿径向设置在保持架40和内圈20之间。在其他实施例中，导向环50也可以沿径向设置在保持架40和外圈10之间。In some embodiments, guide ring 50 is disposed concentrically with outer ring 10 and inner ring 20 . The guide ring 50 is arranged axially between the two rows of rolling elements 30 . In the exemplary embodiment, a guide ring 50 is disposed radially between the cage 40 and the inner ring 20 . In other embodiments, the guide ring 50 can also be arranged radially between the cage 40 and the outer ring 10 .

根据本发明的某些实施例，滚动轴承还包括密封装置60。在示例性实施例中，如图3所示，滚动轴承包括两个密封装置60，分别固定到滚动轴承在轴向上的两端。下面将参照附图详细描述密封装置的结构。According to some embodiments of the invention, the rolling bearing further comprises a sealing device 60 . In an exemplary embodiment, as shown in FIG. 3 , the rolling bearing includes two sealing devices 60 respectively fixed to both ends of the rolling bearing in the axial direction. The structure of the sealing device will be described in detail below with reference to the accompanying drawings.

图4是根据本发明的某些实施例的密封装置的透视图。图5是根据本发明的某些实施例的密封装置的局部截面图。如图4和图5所示，密封装置60包括骨架70和密封唇80。骨架70包括多个骨架部段71。如图4所示，多个骨架部段71可以沿周向依次接合以形成环形的骨架70。因此，骨架70具有分段式结构。在一些实施例中，密封唇80具有整体环形结构。Figure 4 is a perspective view of a sealing device according to some embodiments of the invention. 5 is a partial cross-sectional view of a sealing device according to some embodiments of the present invention. As shown in FIGS. 4 and 5 , the sealing device 60 includes a skeleton 70 and a sealing lip 80 . The frame 70 includes a plurality of frame segments 71 . As shown in FIG. 4 , a plurality of frame segments 71 may be sequentially joined in the circumferential direction to form an annular frame 70 . Therefore, the frame 70 has a segmented structure. In some embodiments, sealing lip 80 has a unitary annular configuration.

图6是根据本发明的某些实施例的密封装置的骨架部段的透视图。图7是根据本发明的某些实施例的密封装置的骨架部段的俯视图。在示例性实施例中，如图6所示，骨架部段71包括分别位于周向两端的接合部分72和73。Figure 6 is a perspective view of a skeleton section of a sealing device according to some embodiments of the present invention. 7 is a top view of a skeleton section of a sealing device according to some embodiments of the invention. In an exemplary embodiment, as shown in FIG. 6 , the skeleton section 71 includes engaging portions 72 and 73 located at both ends in the circumferential direction, respectively.

在示例性实施例中，不同骨架部段71的接合部分72和73可以可拆卸地连接。在一些实施例中，如图7所示，接合部分72具有沿径向延伸的凸起形状，接合部分73具有沿径向延伸的凹槽形状。接合部分72的凸起形状与接合部分73的凹槽形状相互匹配。在装配时，一个骨架部段71的具有凸起形状的接合部分72可以沿径向被插入到另一骨架部段71的具有凹槽形状的接合部分73中。由此，当两个骨架部段71接合时，一个骨架部段71的具有凸起形状的接合部分72可以与另一骨架部段71的具有凹槽形 状的接合部分73形状配合地接合。In an exemplary embodiment, the joint portions 72 and 73 of different frame sections 71 may be detachably connected. In some embodiments, as shown in FIG. 7 , the engaging portion 72 has a radially extending convex shape, and the engaging portion 73 has a radially extending groove shape. The convex shape of the engagement portion 72 and the groove shape of the engagement portion 73 match each other. At the time of assembly, the convex-shaped engagement portion 72 of one skeleton section 71 can be inserted into the groove-shaped engagement section 73 of the other skeleton section 71 in the radial direction. Thereby, when the two skeleton sections 71 are engaged, the engaging portion 72 having a convex shape of one skeleton section 71 can be positively engaged with the engaging portion 73 having a groove shape of the other skeleton section 71 .

根据本发明的某些实施例，接合部分73的凹槽形状可以至少部分地包裹接合部分72的凸起形状。在示例性实施例中，沿径向观察，接合部分72的凸起形状具有大致弧形外轮廓，并且接合部分73的凹槽形状也具有相匹配的大致弧形内轮廓。接合部分72的大致弧形外轮廓的弧度大于180度，并且接合部分73的大致弧形内轮廓的弧度也大于180度。由此，当两个骨架部段71相互接合时，接合部分73对接合部分72的包裹可以约束相互接合的两个接合部分72和73沿周向的相对移动。由此，相互接合的两个骨架部段71不会沿周向分开。According to some embodiments of the present invention, the groove shape of the engaging portion 73 may at least partially wrap the convex shape of the engaging portion 72 . In the exemplary embodiment, viewed radially, the convex shape of the engagement portion 72 has a generally arcuate outer profile, and the groove shape of the engagement portion 73 also has a matching generally arcuate inner profile. The arc of the generally arc-shaped outer profile of the engaging portion 72 is greater than 180 degrees, and the arc of the generally arc-shaped inner profile of the engaging portion 73 is also greater than 180 degrees. Thus, when the two skeleton sections 71 are engaged with each other, the wrapping of the engaging portion 73 by the engaging portion 72 can constrain the relative movement of the two engaging portions 72 and 73 engaged with each other in the circumferential direction. As a result, the two skeleton sections 71 joined to each other cannot separate in the circumferential direction.

上文描述接合部分72和73分别具有大致弧形轮廓。但是，本发明不限于此。根据本发明的实施例，分别构造成凸起和凹槽的接合部分72和73还可以具有其他形状的轮廓，只要两者能够相互接合以约束彼此沿周向的相对移动即可。It is described above that the engaging portions 72 and 73 respectively have substantially arcuate profiles. However, the present invention is not limited thereto. According to the embodiment of the present invention, the engaging portions 72 and 73 respectively configured as protrusions and grooves may also have profiles of other shapes as long as they can engage with each other to constrain relative movement of each other in the circumferential direction.

上文描述接合部分72和73分别具有凸起和凹槽形状。但是，本发明不限于此。根据本发明的实施例，接合部分72和73还可以具有其他形状，只要两者能够相互接合以构成环形的骨架即可。It is described above that the engaging portions 72 and 73 have the convex and groove shapes, respectively. However, the present invention is not limited thereto. According to the embodiment of the present invention, the engaging portions 72 and 73 may also have other shapes, as long as the two can be engaged with each other to form a ring-shaped skeleton.

上文描述有凸起形状的接合部分72沿径向被插入到具有凹槽形状的接合部分73中。但是，本发明不限于此。根据本发明的实施例，接合部分72和73还可以以其他方式可拆卸地彼此连接，例如卡扣连接、榫卯连接、销连接等。The engaging portion 72 described above having a convex shape is inserted into the engaging portion 73 having a groove shape in the radial direction. However, the present invention is not limited thereto. According to an embodiment of the present invention, the joint parts 72 and 73 may also be detachably connected to each other in other ways, such as snap-fit connection, mortise and tenon connection, pin connection and the like.

上文描述不同骨架部段71的接合部分72和73可拆卸地连接。但是，本发明不限于此。根据本发明的实施例，接合部分72和73还可以不拆卸地彼此连接，例如胶接、焊接等。It has been described above that the engaging portions 72 and 73 of the different skeleton sections 71 are detachably connected. However, the present invention is not limited thereto. According to an embodiment of the present invention, the joint parts 72 and 73 can also be connected to each other without detachment, such as glued, welded and the like.

根据本发明的某些实施例，骨架部段71还包括位于径向一端处的卡槽74。在示例性实施例中，如图5所示，卡槽74位于骨架部段71的径向内端。密封唇80包括连接部81和接触部82。密封唇80可以通过连接部81连接到各个骨架部段71。在示例性实施例中，如图5所示，密封唇80的连接部81嵌入到骨架部段71的卡槽74中。According to some embodiments of the present invention, the skeleton section 71 further includes a locking groove 74 at one end in the radial direction. In an exemplary embodiment, as shown in FIG. 5 , the locking groove 74 is located at the radially inner end of the skeleton section 71 . The sealing lip 80 includes a connection portion 81 and a contact portion 82 . The sealing lip 80 can be connected to the respective frame section 71 via a connection 81 . In an exemplary embodiment, as shown in FIG. 5 , the connecting portion 81 of the sealing lip 80 is inserted into the engaging groove 74 of the skeleton section 71 .

在一些实施例中，如图2和图3所示，骨架70的各个骨架部段固定连 接到滚动轴承的外圈10，并且密封唇80的接触部82(图2中未示出)与滚动轴承的内圈20接触。在一些实施例中，骨架70的各个骨架部段71可以固定连接到滚动轴承的内圈10，并且密封唇80的接触部82与滚动轴承的外圈10接触。In some embodiments, as shown in FIGS. 2 and 3 , each skeleton segment of the skeleton 70 is fixedly connected to the outer ring 10 of the rolling bearing, and the contact portion 82 (not shown in FIG. 2 ) of the sealing lip 80 is in contact with the rolling bearing. The inner ring 20 contacts. In some embodiments, each skeleton section 71 of the skeleton 70 may be fixedly connected to the inner ring 10 of the rolling bearing, and the contact portion 82 of the sealing lip 80 is in contact with the outer ring 10 of the rolling bearing.

在示例性实施例中，滚动轴承还包括多个螺纹连接件90，骨架部段71通过螺纹连接件90固定连接到外圈10或内圈20。在一些实施例中，如图5和图6所示，骨架部段71还包括沿轴向延伸的安装通孔75。在一些实施例中，如图3所示，螺纹连接件90穿过安装通孔75将骨架部段71连接到外圈10。在一些实施例中，螺纹连接件90还可以穿过安装通孔75将骨架部段71连接到内圈20。In an exemplary embodiment, the rolling bearing further includes a plurality of threaded connections 90 through which the skeleton section 71 is fixedly connected to the outer ring 10 or the inner ring 20 . In some embodiments, as shown in FIGS. 5 and 6 , the skeleton section 71 further includes an installation through hole 75 extending in the axial direction. In some embodiments, as shown in FIG. 3 , a threaded connection 90 connects the skeleton section 71 to the outer ring 10 through the mounting through hole 75 . In some embodiments, the threaded connection 90 can also connect the skeleton section 71 to the inner ring 20 through the mounting through hole 75 .

在示例性实施例中，骨架70的每个骨架部段71具有相同的形状。这可以降低各个骨架部件的装配成本，降低装配错误的可能性。In the exemplary embodiment, each frame segment 71 of frame 70 has the same shape. This reduces the assembly cost of the individual skeletal components and reduces the possibility of assembly errors.

在一些实施例中，骨架部段71可以由金属材料制成，例如钢。这种情况下，骨架部段71可以通过冲压等工艺形成。在一些实施例中，骨架部段71可以由塑料材料制成。这种情况下，骨架部段71可以通过注塑或3D打印等工艺形成。In some embodiments, the skeleton section 71 may be made of a metallic material, such as steel. In this case, the skeleton section 71 can be formed by stamping or other processes. In some embodiments, the skeleton section 71 may be made of a plastic material. In this case, the skeleton section 71 can be formed by injection molding or 3D printing.

在一些实施例中，骨架部段71是一体形成的。这可以降低骨架部段和密封装置的制造成本。在一些实施例中，骨架部段71的各个部分也可以分开形成，例如接合部分72、73可以通过焊接等方式连接到骨架部段71的主体部分上。In some embodiments, the backbone section 71 is integrally formed. This makes it possible to reduce the manufacturing costs of the framework section and of the seal. In some embodiments, various parts of the frame section 71 can also be formed separately, for example, the joint parts 72 and 73 can be connected to the main body part of the frame section 71 by welding or the like.

在示例性实施例中，密封唇80可以由橡胶制成。在其他实施例中，密封唇80还可以由其他弹性或柔性材料制成。In an exemplary embodiment, sealing lip 80 may be made of rubber. In other embodiments, the sealing lip 80 can also be made of other elastic or flexible materials.

上文描述密封唇80通过将连接部81嵌入到骨架部段71的卡槽74中来连接到骨架70。但是，本发明不限于此。根据本发明的实施例，密封唇80还可以以其他方式连接到骨架70的骨架部段71。例如，密封唇80可以包括凹入容纳部，并且可以通过凹入容纳部的弹性变形来包裹骨架部段71的一部分，从而连接到骨架部段71。It is described above that the sealing lip 80 is connected to the frame 70 by inserting the connecting portion 81 into the groove 74 of the frame section 71 . However, the present invention is not limited thereto. According to an embodiment of the invention, the sealing lip 80 can also be connected to the frame section 71 of the frame 70 in other ways. For example, the sealing lip 80 may include a concave receiving portion, and may wrap a part of the skeleton section 71 by elastic deformation of the concave receiving portion, thereby being connected to the skeleton section 71 .

上文描述采用根据本发明的实施例的密封装置的滚动轴承包括两列滚动体。但是，本发明不限于此。根据本发明的实施例，密封装置还可以应 用于仅包括一列滚动体的滚动轴承。It has been described above that the rolling bearing employing the sealing device according to the embodiment of the present invention includes two rows of rolling elements. However, the present invention is not limited thereto. According to an embodiment of the invention, the sealing device can also be applied to a rolling bearing comprising only one row of rolling elements.

尽管已经参考示例性实施例描述了本发明，但是应理解，本发明并不限于上述实施例的构造和方法。相反，本发明意在覆盖各种修改例和等同配置。另外，尽管在各种示例性结合体和构造中示出了所公开发明的各种元件和方法步骤，但是包括更多、更少的元件或方法的其它组合也落在本发明的范围之内。While the invention has been described with reference to exemplary embodiments, it should be understood that the invention is not limited to the constructions and methods of the above-described embodiments. On the contrary, the invention is intended to cover various modification examples and equivalent arrangements. In addition, while the various elements and method steps of the disclosed invention are shown in various exemplary combinations and configurations, other combinations, including more, less, or method steps, are also within the scope of the invention .

Claims (10)

一种用于滚动轴承的密封装置，包括：A sealing device for rolling bearings, comprising: 环形骨架，包括依次接合的多个骨架部段，其中每个骨架部段包括分别位于该骨架部段在周向上的两端的第一接合部分和第二接合部分，所述第一接合部分和所述第二接合部分具有相互匹配的形状，使得一个骨架部段的第一接合部分能够形状配合地接合到相邻骨架部段的第二接合部分；和The ring-shaped skeleton includes a plurality of skeleton sections joined in sequence, wherein each skeleton section includes a first joint portion and a second joint portion respectively located at two ends of the skeleton section in the circumferential direction, the first joint portion and the said second engagement portions have mutually matching shapes such that a first engagement portion of one frame section can be positively engaged to a second engagement portion of an adjacent frame section; and 环形密封唇，其连接到所述骨架的多个骨架部段并且包括在径向上位于远离所述骨架的一端处的接触部。An annular sealing lip is connected to the plurality of frame segments of the frame and includes a contact portion located at an end radially remote from the frame. 根据权利要求1所述的密封装置，其中，所述第一接合部分具有沿径向延伸的凸起形状，并且所述第二接合部分具有沿径向延伸的凹槽形状。The sealing device according to claim 1, wherein the first engaging portion has a radially extending convex shape, and the second engaging portion has a radially extending groove shape. 根据权利要求2所述的密封装置，其中，所述第二接合部分的凹槽形状构造成能够至少部分地包裹所述第一接合部分的凸起形状，以使得相互接合的第一接合部分和第二接合部分不会沿所述周向分开。The sealing device according to claim 2, wherein the groove shape of the second engaging portion is configured to at least partially wrap the convex shape of the first engaging portion, so that the first engaging portion and the first engaging portion engaged with each other The second engagement portion does not separate in the circumferential direction. 根据权利要求1所述的密封装置，其中，每个骨架部段还包括位于所述骨架部段在径向上的一端的卡槽，所述密封唇包括连接部，并且所述密封唇的连接部被嵌入到所述多个骨架部段的卡槽中。The sealing device according to claim 1, wherein each skeleton section further includes a locking groove at one end of the skeleton section in the radial direction, the sealing lip includes a connecting portion, and the connecting portion of the sealing lip It is embedded into the slots of the plurality of skeleton sections. 根据权利要求1所述的密封装置，其中，每个骨架部段还包括沿轴向延伸的安装通孔。The sealing device according to claim 1, wherein each skeleton section further includes a mounting through hole extending in the axial direction. 根据权利要求1所述的密封装置，其中，每个骨架部段具有相同的形状。The sealing device of claim 1, wherein each frame segment has the same shape. 根据权利要求1所述的密封装置，其中，每个骨架部段是一体形成的。The sealing device of claim 1, wherein each frame segment is integrally formed. 一种滚动轴承，包括：A rolling bearing comprising: 外圈；outer ring; 内圈，设置于所述外圈的径向内部；an inner ring arranged radially inward of the outer ring; 多个滚动体，沿径向设置在所述外圈和所述内圈之间；和a plurality of rolling elements disposed radially between the outer ring and the inner ring; and 根据权利要求1至7中任一项所述的密封装置，A sealing device according to any one of claims 1 to 7, 其中，所述密封装置的骨架连接到所述外圈和所述内圈中的一者，并且所述密封装置的密封唇的接触部与所述外圈和所述内圈中的另一者接触。Wherein, the skeleton of the sealing device is connected to one of the outer ring and the inner ring, and the contact portion of the sealing lip of the sealing device is connected to the other of the outer ring and the inner ring touch. 根据权利要求8所述的滚动轴承，还包括多个螺纹连接件，其中所述骨架的每个骨架部段通过相应螺纹连接件连接到所述外圈和所述内圈中的所述一者。The rolling bearing according to claim 8, further comprising a plurality of threaded connections, wherein each carcass section of said carcass is connected to said one of said outer ring and said inner ring by a respective threaded connection. 根据权利要求9所述的滚动轴承，其中，所述滚动轴承包括两列滚动体，并且所述滚动轴承包括导向环，所述导向环在轴向上位于所述两列滚动体之间。The rolling bearing according to claim 9, wherein the rolling bearing includes two rows of rolling elements, and the rolling bearing includes a guide ring positioned between the two rows of rolling elements in the axial direction.
PCT/CN2021/135312 2021-12-03 2021-12-03 Sealing device for rolling bearing, and rolling bearing Ceased WO2023097650A1 (en)

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CN103328842A (en) * 2010-11-25 2013-09-25 Skf公司 Rolling bearing having interchangeable seal
CN112780689A (en) * 2019-11-11 2021-05-11 斯凯孚公司 Rolling element bearing assembly
CN112780690A (en) * 2019-11-11 2021-05-11 斯凯孚公司 Rolling element bearing assembly

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348587A (en) * 1942-10-15 1944-05-09 Victor Mfg & Gasket Co Seal construction
US4763905A (en) * 1987-12-04 1988-08-16 Allied-Signal Inc. Seal retention and anti-rotation locking assembly
CN103328842A (en) * 2010-11-25 2013-09-25 Skf公司 Rolling bearing having interchangeable seal
CN112780689A (en) * 2019-11-11 2021-05-11 斯凯孚公司 Rolling element bearing assembly
CN112780690A (en) * 2019-11-11 2021-05-11 斯凯孚公司 Rolling element bearing assembly

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