WO2017193785A1 - 分段式保持架、圆柱滚子轴承及其安装方法 - Google Patents

分段式保持架、圆柱滚子轴承及其安装方法 Download PDF

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Publication number
WO2017193785A1
WO2017193785A1 PCT/CN2017/081208 CN2017081208W WO2017193785A1 WO 2017193785 A1 WO2017193785 A1 WO 2017193785A1 CN 2017081208 W CN2017081208 W CN 2017081208W WO 2017193785 A1 WO2017193785 A1 WO 2017193785A1
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WO
WIPO (PCT)
Prior art keywords
cylindrical roller
cage
cylindrical
roller bearing
holding portion
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PCT/CN2017/081208
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English (en)
French (fr)
Inventor
徐镜峰
王素霞
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舍弗勒技术股份两合公司
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Publication of WO2017193785A1 publication Critical patent/WO2017193785A1/zh

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    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/51—Cages for rollers or needles formed of unconnected 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F16C43/06—Placing rolling bodies in cages or bearings
    • F16C43/065—Placing rolling bodies in cages or bearings in cages

Definitions

  • the present invention relates to the field of bearings, and in particular to a segmented cage for a cylindrical roller bearing, a cylindrical roller bearing, and a method of mounting the same.
  • cages for cylindrical roller bearings typically include a pinned cage (Fig. 1), a monolithic window cage (Fig. 2), and a spacer cage (Figs. 3a and 3b).
  • the cylindrical roller bearings including the above-described three types of cages of the prior art each include an annular inner ring 10 and an outer ring 20, and the inner ring 10
  • a plurality of cylindrical rollers 40 are disposed in the space between the outer ring 20 and the plurality of cylindrical rollers 40 are held by the retainer 30 and used for rolling in the raceways formed by the inner ring 10 and the outer ring 20.
  • the main difference between the three cylindrical roller bearings shown in Figures 1, 2, 3a and 3b is that the specific structure of their cages is different, thus also resulting in different performance of the three cylindrical roller bearings.
  • the cylindrical roller bearing with the pinned cage shown in Fig. 1 has a high load capacity and can be used under conditions of high radial load, but in the installation of such a cylindrical roller bearing, the pinning type
  • the pins of the cage need to be welded to the holder body one by one. This takes a lot of time and is complicated and costly.
  • the cylindrical roller bearing with a single-piece window cage shown in Fig. 2 is widely used in each The field, but the processing of the single-piece window cage takes a lot of time. Although the monolithic (integral) structural design has very good rigidity, the elastic properties are not good enough.
  • the cylindrical roller bearing with a spacer cage shown in Figures 3a and 3b has a high load capacity and can be used under conditions of high radial load, but there is a lack of connection between the spacer and the roller, which leads to operation Speed is limited.
  • the present invention has been made based on the above-described drawbacks of the prior art, and an object of the present invention is to provide a segment which is simple in implementation and low in cost, takes into consideration the rigidity and elasticity of the cage, and has a joint structure between the cage and the roller.
  • a cage, and the present invention also provides a cylindrical roller bearing using the segmented cage and a method of mounting the cylindrical roller bearing.
  • the present invention adopts the following technical solutions.
  • the present invention provides a segmented cage including a plurality of cage units independent of each other, and the holder unit has a straight rod-shaped base from one end of the base a first holding portion extending and a second holding portion extending from the other end of the base, the first holding portion and the second holding portion being in a bent rod shape, and the first holding An end portion of the portion extends in an opposite direction to an end portion of the second holding portion.
  • an angle formed between a plane in which the base portion and the first holding portion are located and a plane in which the base portion and the second holding portion are located is an obtuse angle.
  • a plane in which the base and the first holding portion are located is coplanar with a plane in which the base and the second holding portion are located.
  • the first holding portion has a first connecting portion as an end portion of the first holding portion and a first bent portion connecting the base portion and the first connecting portion, the second holding portion a second connecting portion as an end portion of the second holding portion and a second bent portion connecting the base portion and the second connecting portion, the first bent portion and the second bent portion
  • the portion is perpendicular to the base.
  • first connecting portion and the second connecting portion are cylindrical or tapered.
  • the present invention also provides a cylindrical roller bearing that employs the segmented cage of any one of the above aspects, wherein the cylinder is held by the segmented cage Cylindrical roller for roller bearings.
  • the cylindrical roller bearing includes a plurality of the cylindrical rollers, and both end faces of each of the cylindrical rollers are respectively provided with holding holes, and the first of one cage unit of the segmented cage
  • the retaining portion is mounted in cooperation with a retaining hole of a cylindrical roller, the second retaining portion of the one retainer unit being fitted with the retaining hole of the other cylindrical roller, the one cylindrical roller being in contact with the other cylindrical roller
  • the bearings are adjacent in the circumferential direction.
  • the retaining hole is provided at a center of the end face and extends along a central axis of the cylindrical roller, and the retaining hole and the end portion of the first retaining portion and the second retaining The end portion of the part is fitted together.
  • the holding hole is a through hole or a blind hole
  • the present invention also provides a method of mounting a cylindrical roller bearing according to any one of the above aspects, wherein the mounting method comprises the steps of: a. such that one of the outer rings of the cylindrical roller bearing The state of the side contacting the surface of the assembly plane places the outer ring on the assembly plane; b. placing a cylindrical roller into the outer ring raceway and the first holding portion of one of the cage units of the segmented cage from one Inserting the side into the retaining hole of the one cylindrical roller; c. inserting the second retaining portion of the one retainer unit into the retaining hole of the other cylindrical roller, and inserting the other around the cylindrical roller a cylindrical roller is rotated to the outer ring race; d.
  • the first cylindrical roller is not connected by the cage unit.
  • the present invention provides a segmented cage which is simple in implementation and low in cost, takes into consideration the rigidity and elasticity of the cage, and has a connection structure between the cage and the roller. Further, the present invention also provides a cylindrical roller bearing using the segmented cage and a method of mounting the cylindrical roller bearing.
  • FIG. 1 is a partial cross-sectional view showing a prior art cylindrical roller bearing having a pinned cage.
  • FIG. 2 is a partial cross-sectional view showing a prior art cylindrical roller bearing having a one-piece window cage.
  • Fig. 3a is a schematic cross-sectional view showing a prior art cylindrical roller bearing having a spacer retainer
  • Fig. 3b is a schematic view showing the cylindrical roller bearing viewed from the direction X of Fig. 3a.
  • Figure 4a is an overall schematic view showing a segmented cage in accordance with a first embodiment of the present invention
  • Figure 4b is a schematic view showing one of the segmented cages of Figure 4a.
  • Figure 5a is a front elevational view showing a cylindrical roller bearing using a segmented cage according to a first embodiment of the present invention
  • Figure 5b is a partial cross-sectional view showing the cylindrical roller bearing of Figure 5a
  • Figure 5c is an exploded schematic view showing the components of the cylindrical roller bearing of Figure 5a.
  • Fig. 6 is a schematic view for explaining the mounting process of mounting the cylindrical roller bearing of Figs. 5a to 5c.
  • Fig. 7 is a schematic view showing a holder unit of a segmented cage according to a second embodiment of the present invention.
  • Fig. 8a is a front view showing a cylindrical roller bearing using a segmented cage according to a second embodiment of the present invention
  • Fig. 8b is a partially cutaway view showing the cylindrical roller bearing of Fig. 8a.
  • the mark “R” indicates the radial direction along the cylindrical roller bearing
  • the mark “A” indicates the direction along the central axis of the cylindrical roller bearing
  • the mark “C” indicates the cylindrical roller bearing. The direction of the circumference.
  • the cylindrical roller bearing using the segmented cage 3 comprises an inner ring 1 and an outer ring 2, between the inner ring 1 and the outer ring 2 A plurality of cylindrical rollers 4 are provided along the bearing circumferential direction C in the space, and the plurality of cylindrical rollers 4 are used for rolling in the raceways formed by the inner ring 1 and the outer ring 2 and by the segmented cage 3 Keep it.
  • the segmented cage 3 according to the invention comprises a plurality of cage units 31. After the assembly of the cylindrical roller bearing including the segmented cage 3 according to the present invention is completed, the plurality of cage units 31 are distributed along the bearing circumferential direction C and the plurality of cylindrical rollers 4 are evenly distributed in the bearing circumferential direction C. Separated by the ground.
  • segmented cage 3 The structure of the segmented cage 3 according to the present invention will be described in detail below.
  • the segmented cage 3 includes a plurality of (13 shown) holder units 31 which are arranged independently of each other along the bearing circumferential direction C.
  • each of the holder units 31 has a substantially "S-shaped" three-dimensional structure.
  • a holder unit 31 includes a base 311 that functions as a connection, and the base 311 is along A straight rod shape in which the bearing axial direction A extends.
  • the cage unit 31 also includes a retaining portion for mating with the cylindrical roller 4.
  • the holding portion includes a first holding portion 312 extending from one end portion of the base portion 311 and a second holding portion 313 extending from the other end portion of the base portion 311, and the first holding portion 312 and the second holding portion 313 are curved Folded rod shape.
  • the first holding portion 312 and the second holding portion 313 each have a hook shape formed by the extension of the rod.
  • the shape of the first holding portion 312 and the second holding portion 313 is a shape that first extends from one end portion and the other end portion of the base portion 311 to a direction orthogonal to the base portion 311, and then bends to the base portion. 311 extends in parallel.
  • the first holding portion 312, the second holding portion 313, and the base portion 311 are integrally formed with each other.
  • the first holding portion 312 has a first bent portion 316 and a first connecting portion 314 as an end portion of the first holding portion 312 for connecting the base portion 311 and the first connecting portion 314 together.
  • the first bent portion 316 extends from one end portion of the base portion 311 in a direction orthogonal (perpendicular) to the base portion 311, and the first connecting portion 314 is parallel to the base portion 311 from an end of the first bent portion 316 away from the base portion 311 extend.
  • the diameter of the first connecting portion 314 is equal to the diameter of the first bent portion 316, and the first connecting portion 314 and the first bent portion 316 are both straight rods.
  • the second holding portion 313 has a second bent portion 317 and a second connecting portion 315 as an end portion of the second holding portion 313 for connecting the base portion 311 and the second connecting portion 315 together.
  • the second bent portion 317 extends from the other end portion of the base portion 311 in a direction orthogonal (perpendicular) to the base portion 311, and the second connecting portion 315 is parallel to the base portion 311 from an end of the second bent portion 317 away from the base portion 311. Extend the ground.
  • the second connecting portion 315 and the first connecting portion 314 extend toward each other (in the opposite direction) in the longitudinal direction of the base portion 311.
  • the diameter of the second connecting portion 315 is equal to the diameter of the second bent portion 317, and the second connecting portion 315 and the second bent portion 317 are both straight rods.
  • first connecting portion 314 and the second connecting portion 315 have a cylindrical shape.
  • the plane where the base portion 311 and the first holding portion 312 are located and the base portion 311 The angle formed between the plane in which the second holding portion 313 is located is an obtuse angle.
  • the angle depends on the spacing between adjacent two cylindrical rollers 4, the size of the cylindrical roller 4, the size of the inner ring raceway and the outer raceway.
  • the angle of the included angle is greater than or equal to 120 degrees.
  • the segmented cage 3 according to the second embodiment of the present invention includes a plurality of independent ones arranged along the bearing circumferential direction C (shown in the figure) 13) holder unit 31.
  • the holder unit 31 of the multi-stage holder according to the present embodiment is different from the holder unit 31 of the multi-stage holder according to the first embodiment in that the first connection portion 314
  • the shape and shape of the second connecting portion 315 are different from those of the first embodiment.
  • first connecting portion 314 and the second connecting portion 315 are protrusions extending from the first bent portion 316 and the second bent portion 317 in parallel with the base portion 311, and the cross-sectional dimension of the protrusion is from the first A bent portion 316 and the second bent portion 317 are gradually reduced (i.e., the projection is tapered), and the length of the projection is smaller than the length of the joint portion in the first embodiment.
  • the end faces of each of the cylindrical rollers 4 are respectively provided with holding holes which are provided at the center of the both end faces And extending along the central axis of the cylindrical roller 4.
  • the holding hole may be a through hole.
  • the holding hole is for fitting with the first holding portion 312 (first connecting portion 314) and the second holding portion 313 (second connecting portion 315) of each of the holder units 31 of the segmented holder 3.
  • the cylindrical roller bearing adopts the second embodiment according to the present invention.
  • the recessed portion can be used as the holding hole.
  • the recess is for fitting with the first connecting portion 314 and the second connecting portion 315 which are formed as projections of the respective holder units 31 of the segmented holder 3.
  • the cylindrical roller bearing is mounted as follows: First, the outer ring 2 is placed on the assembly plane in such a state that one side of the outer ring 2 contacts the surface of the assembly plane; then, a cylindrical roller 4 is placed in the outer ring. And inserting the first holding portion 312 (first connecting portion 314) of one of the holder units 31 of the segmented cage 3 into the holding hole of the cylindrical roller 4 from one side; then, as shown in the drawing The second holding portion 313 (second connecting portion 315) of the holder unit 31 is inserted into the holding hole of the other cylindrical roller 4 at the position B1, and the other cylindrical roller 4 is wound around the one cylindrical roller 4.
  • the first holding portion 312 and the second holding portion 313 of one holder unit 31 are respectively mounted to two adjacent cylindrical rollers 4, and the axis of one cylindrical roller 4
  • the holders of the two adjacent holder units 31 are respectively mounted to both ends.
  • a plurality of cylindrical rollers 4 are connected in series by a plurality of cage units 31.
  • the base 311 of the cage unit 31 is located in the space enclosed by two adjacent cylindrical rollers 4 and the inner ring 1, so that the cylindrical roller 4 can be arranged relatively densely. Therefore, the radial load bearing capacity of the bearing can be improved.
  • the base portion 311 may be disposed in a space surrounded by two adjacent cylindrical rollers 4 and the outer ring 2.
  • the last cylindrical roller 4 and the first cylindrical roller 4 may not be connected by the cage unit 31.
  • the mounting error accumulated in particular by the dimensional error of each of the cage units 31 can be absorbed by the distance between the first cylindrical roller 4 and the last cylindrical roller 4.
  • the present invention is not limited thereto.
  • the plane formed by the base portion 311 and the first holding portion 312 and the plane formed by the base portion 311 and the second holding portion 313 may be coplanar, that is, two The angle between the planes is 0 degrees.
  • the segmented cage 3 according to the present invention can also be used for tapered roller bearings, drum roller bearings and the like.
  • the cage unit 31 of the segmented cage 3 is made of steel wire.
  • first connection portion 314 and the second connection portion 315 have been described as being cylindrical or tapered in the above specific embodiments, the present invention is not limited thereto.
  • first connecting portion 314 and the second connecting portion 315 may also have other shapes such as a frustum shape.
  • the present invention provides a segmented cage which is simple in implementation and low in cost, takes into consideration the rigidity and elasticity of the cage, and has a connection structure between the cage and the roller, and the present invention also provides A cylindrical roller bearing using the segmented cage and a method of mounting the cylindrical roller bearing.

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

Abstract

用于圆柱滚子轴承的分段式保持架（3），其包括彼此独立的多个保持架单元（31），保持架单元（31）具有直杆状的基部（311）、从基部（311）的一端部延伸出的第一保持部（312）以及从基部（311）的另一端部延伸出的第二保持部（313），第一保持部（312）和第二保持部（313）呈弯折的杆状，并且第一保持部（312）的末端部分与第二保持部（313）的末端部分沿相反的方向延伸，通过采用该技术方案，提供了一种实现简单且成本低、兼顾保持架的刚性和弹性、并且保持架和滚子之间具有连接结构的分段式保持架。此外，还提供了采用该分段式保持架的圆柱滚子轴承以及该圆柱滚子轴承的安装方法。

Description

分段式保持架、圆柱滚子轴承及其安装方法
相关申请的引用
本发明要求2016年5月9日在中国提交的、名称为“分段式保持架、圆柱滚子轴承及其安装方法”、申请号为201610301217.5的发明专利申请的优先权，该申请的全部内容通过引用并入本文。
技术领域
本发明涉及轴承领域，具体地涉及用于圆柱滚子轴承的分段式保持架、圆柱滚子轴承及其安装方法。
背景技术
在现有技术中，圆柱滚子轴承的保持架通常包括穿销式保持架(图1)，单片窗式保持架(图2)以及隔片式保持架(图3a和图3b)。如图1、图2、图3a和图3b所示，包括以上所述的现有技术的三种保持架的圆柱滚子轴承均包括环状的内圈10和外圈20，在内圈10和外圈20之间的空间内设置有多个圆柱滚子40，该多个圆柱滚子40被保持于保持架30并用于在内圈10和外圈20所形成的滚道内滚动。在图1、图2、图3a和图3b所示的三种圆柱滚子轴承的主要区别在于它们的保持架的具体结构不同，因而也导致了这三种圆柱滚子轴承具有不同的性能。
在图1中示出的具有穿销式保持架的圆柱滚子轴承具有高负载能力，能够用于径向载荷高的条件下，但是在这种圆柱滚子轴承安装过程中，该穿销式保持架的穿销需要一个接一个地被焊接到保持架主体上。这需要花费大量的时间，并且作业复杂且成本高。
在图2中示出的具有单片窗式保持架的圆柱滚子轴承被广泛地应用于各 种领域，但是单片窗式保持架的加工过程需要花费大量的时间。尽管单片(一体)的结构设计具有非常好的刚性，但是弹性性能不够良好。
在图3a和3b中示出的具有隔片式保持架的圆柱滚子轴承具有高负载能力，能够用于径向载荷高的条件下，但是间隔件和滚子之间缺乏连接，这导致运转速度受到限制。
发明内容
基于上述现有技术的缺陷做出了本发明，本发明的发明目的在于提供一种实现简单且成本低、兼顾保持架的刚性和弹性、并且保持架和滚子之间具有连接结构的分段式保持架，并且本发明还提供了采用该分段式保持架的圆柱滚子轴承以及该圆柱滚子轴承的安装方法。为了实现上述发明目的，本发明采用如下的技术方案。
本发明提供一种如下的分段式保持架，所述分段式保持架包括彼此独立的多个保持架单元，并且所述保持架单元具有直杆状的基部、从所述基部的一端部延伸出的第一保持部以及从所述基部的另一端部延伸出的第二保持部，所述第一保持部和所述第二保持部呈弯折的杆状，并且所述第一保持部的末端部分与所述第二保持部的末端部分沿相反的方向延伸。
优选地，所述基部和所述第一保持部所在的平面与所述基部和所述第二保持部所在的平面之间形成的夹角为钝角。
优选地，所述基部和所述第一保持部所在的平面与所述基部和所述第二保持部所在的平面共面。
更优选地，所述第一保持部具有作为所述第一保持部的末端部分的第一连接部和连接所述基部与所述第一连接部的第一弯折部，所述第二保持部具有作为所述第二保持部的末端部分的第二连接部和连接所述基部与所述第二连接部的第二弯折部，所述第一弯折部、所述第二弯折部垂直于所述基部。
进一步，优选地，所述第一连接部、所述第二连接部呈圆柱状或锥状。
本发明还提供了一种如下圆柱滚子轴承，所述圆柱滚子轴承采用以上技术方案中任意一项技术方案所述的分段式保持架，通过所述分段式保持架保持所述圆柱滚子轴承的圆柱滚子。
优选地，所述圆柱滚子轴承包括多个所述圆柱滚子，每个所述圆柱滚子的两端面分别设置有保持孔，并且所述分段式保持架的一个保持架单元的第一保持部与一个圆柱滚子的保持孔配合安装，该一个保持架单元的第二保持部与另一个圆柱滚子的保持孔配合安装，所述一个圆柱滚子与所述另一个圆柱滚子在轴承周向上相邻。
更优选地，所述保持孔设置于所述端面的圆心处且沿着所述圆柱滚子的中心轴线延伸，并且所述保持孔与所述第一保持部的末端部分和所述第二保持部的末端部分配合安装。
进一步，优选地，所述保持孔为通孔或盲孔，
本发明还提供了一种以上技术方案中任意一项技术方案所述的圆柱滚子轴承的安装方法，所述安装方法包括如下步骤：a.以使得所述圆柱滚子轴承的外圈的一侧接触组装平面的表面的状态将外圈置于组装平面；b.将一个圆柱滚子放入外圈滚道并且将所述分段式保持架的一个保持架单元的第一保持部从一侧插入该一个圆柱滚子的保持孔中；c.将所述一个保持架单元的第二保持部插入另一个圆柱滚子的保持孔中，并且绕着所述一个圆柱滚子将所述另一个圆柱滚子转动到外圈滚道处；d.将所述分段式保持架的另一保持架单元的第一保持部从一侧插入所述另一个圆柱滚子的保持孔中；e.重复上述步骤c和d，使所有圆柱滚子与保持架单元连接并组装到所述外圈滚道；以及f.将所述圆柱滚子轴承的内圈放入多个圆柱滚子的轴承径向内侧，使所有圆柱滚子位于内圈滚道。
优选地，在所有圆柱滚子安装到所述外圈滚道之后，第一个圆柱滚子与 最后一个圆柱滚子不通过所述保持架单元连接。
通过采用该技术方案，本发明的提供了一种实现简单且成本低、兼顾保持架的刚性和弹性、并且保持架和滚子之间具有连接结构的分段式保持架。此外，本发明还提供了采用该分段式保持架的圆柱滚子轴承以及该圆柱滚子轴承的安装方法。
附图说明
图1是示出了现有技术中的具有穿销式保持架的圆柱滚子轴承的局部剖视示意图。
图2是示出了现有技术中的具有单片窗式保持架的圆柱滚子轴承的局部剖视示意图。
图3a是示出了现有技术中的具有隔片式保持架的圆柱滚子轴承的剖视示意图，图3b是示出了从图3a的方向X观察圆柱滚子轴承的示意图。
图4a是示出了根据本发明的第一实施方式的分段式保持架的整体示意图；图4b是示出了图4a的分段式保持架中的一个保持架单元的示意图。
图5a是示出了采用根据本发明的第一实施方式的分段式保持架的圆柱滚子轴承的主视图，图5b是示出了图5a中的圆柱滚子轴承的局部剖视示意图；图5c是示出了图5a中的圆柱滚子轴承的各部件的分解示意图。
图6是用于说明安装图5a至图5c中的圆柱滚子轴承的安装过程的示意图。
图7是示出了根据本发明的第二实施方式的分段式保持架的一个保持架单元的示意图。
图8a是示出了采用根据本发明的第二实施方式的分段式保持架的圆柱滚子轴承的主视图，图8b是示出了图8a中的圆柱滚子轴承的局部剖视示意图。
附图标记说明
10内圈 20外圈 30保持架 40圆柱滚子
1内圈 2外圈 3分段式保持架 31保持架单元 311基部 312第一保持部 313第二保持部 314第一连接部 315第二连接部 316第一弯折部 317第二弯折部 4圆柱滚子
R轴承径向 A轴承轴向 C轴承周向
具体实施方式
以下参照说明书附图来说明本发明的具体实施方式。在附图中，标记“R”表示沿着圆柱滚子轴承的径向的方向，标记“A”表示沿着圆柱滚子轴承的中心轴线的方向，标记“C”表示沿着圆柱滚子轴承的圆周的方向。
如图5a至图5c以及图8a至图8b所示，采用根据本发明的分段式保持架3的圆柱滚子轴承包括内圈1和外圈2，在内圈1和外圈2之间的空间内沿着轴承周向C设置有多个圆柱滚子4，该多个圆柱滚子4用于在内圈1和外圈2所形成的滚道内滚动并由该分段式保持架3进行保持。
根据本发明的分段式保持架3包括多个保持架单元31。当包括根据本发明的分段式保持架3的圆柱滚子轴承组装完成之后，该多个保持架单元31沿着轴承周向C分布并且使得多个圆柱滚子4在轴承周向C上均匀地分隔开。
以下详细地说明根据本发明的分段式保持架3的结构。
<分段式保持架3的结构>
(第一实施方式)
如图4a所示，根据本发明的第一实施方式的分段式保持架3包括沿着轴承周向C排列的、彼此独立的多个(图中所示为13个)保持架单元31。
在本实施方式中，如图4b所示，每个保持架单元31具有大致“S形”的立体结构。一个保持架单元31包括起到连接作用的基部311，该基部311为沿 着轴承轴向A延伸的直杆状。该保持架单元31还包括用于与圆柱滚子4配合安装的保持部。该保持部包括从基部311的一端部延伸出的第一保持部312以及从所述基部311的另一端部延伸出的第二保持部313，第一保持部312和第二保持部313呈弯折的杆状。
该第一保持部312和第二保持部313均具有由杆延伸形成的弯钩形状。具体地，第一保持部312和第二保持部313的形状为如下形状：首先分别从基部311的一端部和另一端部向与基部311正交的方向延伸；然后再弯折而向与基部311平行的方向延伸。在本实施方式中，优选地，第一保持部312、第二保持部313与基部311彼此一体地形成。
第一保持部312具有第一弯折部316和作为第一保持部312的末端部分的第一连接部314，第一弯折部316用于将基部311与第一连接部314连接在一起。第一弯折部316从基部311的一端部起向与基部311正交(垂直)的方向延伸，第一连接部314从该第一弯折部316的远离基部311的一端与基部311平行地延伸。该第一连接部314的直径与第一弯折部316的直径相等，并且第一连接部314与第一弯折部316均为直杆状。
第二保持部313具有第二弯折部317和作为第二保持部313的末端部分的第二连接部315，第二弯折部317用于将基部311与第二连接部315连接在一起。第二弯折部317从基部311的另一端部起向与基部311正交(垂直)的方向延伸，第二连接部315从该第二弯折部317的远离基部311的一端与基部311平行地延伸。在本实施方式中，第二连接部315与第一连接部314在基部311的长度方向上彼此相向(朝向相反的方向)延伸。该第二连接部315的直径与第二弯折部317的直径相等，并且第二连接部315与第二弯折部317均为直杆状。
在本实施方式中，第一连接部314和第二连接部315呈圆柱状。
另外，在本实施方式中，基部311和第一保持部312所在的平面与基部311 和第二保持部313所在的平面之间形成的夹角为钝角。该夹角的大小取决于相邻两个圆柱滚子4之间的间隔、圆柱滚子4的尺寸、内圈滚道和外圈滚道的尺寸等参数。优选地，该夹角的角度大于等于120度。
(第二实施方式)
如图8a所示，与第一实施方式同样地，根据本发明的第二实施方式的分段式保持架3包括沿着轴承周向C排列的、彼此独立的多个(图中所示为13个)保持架单元31。
如图7和图8b所示，根据本实施方式的多段式保持架的保持架单元31与根据第一实施方式的多段式保持架的保持架单元31的不同之处在于：第一连接部314的形状和第二连接部315的形状与第一实施方式不同。
具体地，第一连接部314和第二连接部315为分别从第一弯折部316和第二弯折部317起、与基部311平行地延伸的凸起，该凸起的截面尺寸从第一弯折部316和第二弯折部317起逐渐减小(即该凸起为锥状)，并且该凸起的长度小于第一实施方式中的连接部的长度。
以下更详细地说明采用根据本发明的分段式保持架3的圆柱滚子轴承。
<圆柱滚子轴承的结构>
以上已经说明了采用根据本发明的分段式保持架3的圆柱滚子轴承的概略结构。在该圆柱滚子轴承中，为了使根据本发明的分段式保持架3的各保持架单元31与圆柱滚子4实现连接，需要各圆柱滚子4上设置与根据本发明的分段式保持架3配合安装的结构。
当圆柱滚子轴承采用根据本发明的第一实施方式的分段式保持架3时，使每个圆柱滚子4的两端面分别设置有保持孔，该保持孔设置于上述两端面的圆心处且沿着圆柱滚子4的中心轴线延伸。该保持孔可以为通孔。该保持孔用于与分段式保持架3的各保持架单元31的第一保持部312(第一连接部314)和第二保持部313(第二连接部315)配合安装。
另外，由于加工圆柱滚子4时通常会使得圆柱滚子4的两端面的几何中心(圆心)处残留凹部(盲孔)，因此当圆柱滚子轴承采用根据本发明的第二实施方式的分段式保持架3时，可以以该凹部(盲孔)作为保持孔。该凹部用于与分段式保持架3的各保持架单元31的形成为凸起的第一连接部314和第二连接部315配合安装。
以下结合图6说明采用根据本发明的分段式保持架3的圆柱滚子轴承的安装方法。
<圆柱滚子轴承的安装方法>
该圆柱滚子轴承的安装方法如下：首先，以使得外圈2的一侧接触组装平面的表面的状态将外圈2置于组装平面上；然后，将一个圆柱滚子4放入外圈滚道并且将分段式保持架3的一个保持架单元31的第一保持部312(第一连接部314)从一侧插入该圆柱滚子4的保持孔中；接着，在如图所示的位置B1处使该保持架单元31的第二保持部313(第二连接部315)插入另一个圆柱滚子4的保持孔中，并且绕着该一个圆柱滚子4将另一个圆柱滚子4转动到位置B2；进一步地，将另一个保持架单元31的第一保持部312(第一连接部314)从一侧插入另一个圆柱滚子4的保持孔中；随后，重复采用同样的方法将圆柱滚子4和保持架单元31连接在一起并组装到外圈2滚道中；最后，将内圈1放入多个圆柱滚子4的轴承径向R内侧实现固定。
从例如图6和图7中可以看出，一个保持架单元31的第一保持部312和第二保持部313分别安装到两个相邻的圆柱滚子4，而一个圆柱滚子4的轴向两端分别与两个相邻的保持架单元31的保持架安装到一起。这样，由多个保持架单元31将多个圆柱滚子4串连到一起。
从例如图5a和图5b中可以看出，保持架单元31的基部311位于两个相邻的圆柱滚子4和内圈1围成的空间内，这样，可以相对密集地配置圆柱滚子4，从而可以提高轴承的径向承载能力。当然，通过适当设定第一保持部312和 第二保持部313之间的角度，基部311可以布置在两个相邻的圆柱滚子4和外圈2围成的空间内。
需要说明的是，由于根据本发明的保持架单元31的结构特性，最后一个圆柱滚子4与第一个圆柱滚子4可以不通过保持架单元31连接。这样，可以通过第一个圆柱滚子4和最后一个圆柱滚子4之间的距离吸收尤其是各保持架单元31的尺寸误差累积起来的安装误差。
在以上具体实施方式中详细地阐述了发明的具体实施例，但是还需要说明的是：
1.虽然以上的具体实施方式中说明了基部311与第一保持部312所形成的平面与基部311与第二保持部313所形成的平面之间的夹角为钝角，但是本发明不限于此。例如，在圆柱滚子4之间的间距较大的情况下，基部311与第一保持部312所形成的平面与基部311与第二保持部313所形成的平面两者可以共面，即两个平面之间的夹角为0度。
2.虽然以上的具体实施方式中以圆柱滚子轴承为例进行了说明，但是本发明不限于此。根据本发明的分段式保持架3还可以用于圆锥滚子轴承、鼓形滚子轴承等。
3.虽然以上的具体实施方式中没有具体说明根据本发明的分段式保持架3的材料，但是优选地，该分段式保持架3的保持架单元31由钢丝制成。
4.虽然以上的具体实施方式中说明了第一连接部314和第二连接部315呈圆柱状或锥状，但是本发明不限于此。例如，第一连接部314和第二连接部315还可以呈现锥台状等其它形状。
通过采用上述技术方案，本发明提供了一种实现简单且成本低、兼顾保持架的刚性和弹性、并且保持架和滚子之间具有连接结构的分段式保持架，并且本发明还提供了采用该分段式保持架的圆柱滚子轴承以及该圆柱滚子轴承的安装方法。
本发明的保护范围不限于上述具体实施方式中说明的具体实施例，而是只要满足本发明的权利要求的技术特征的组合就落入了本发明的保护范围之内。

Claims (11)

  1. 一种分段式保持架，其特征在于，所述分段式保持架包括彼此独立的多个保持架单元，并且
    所述保持架单元具有直杆状的基部、从所述基部的一端部延伸出的第一保持部以及从所述基部的另一端部延伸出的第二保持部，所述第一保持部和所述第二保持部呈弯折的杆状，并且所述第一保持部的末端部分与所述第二保持部的末端部分沿相反的方向延伸。
  2. 根据权利要求1所述的分段式保持架，其特征在于，所述基部和所述第一保持部所在的平面与所述基部和所述第二保持部所在的平面之间形成的夹角为钝角。
  3. 根据权利要求1所述的分段式保持架，其特征在于，所述基部和所述第一保持部所在的平面与所述基部和所述第二保持部所在的平面共面。
  4. 根据权利要求1至3中任一项所述的分段式保持架，其特征在于，所述第一保持部具有作为所述第一保持部的末端部分的第一连接部和连接所述基部与所述第一连接部的第一弯折部，所述第二保持部具有作为所述第二保持部的末端部分的第二连接部和连接所述基部与所述第二连接部的第二弯折部，所述第一弯折部、所述第二弯折部垂直于所述基部。
  5. 根据权利要求4所述的分段式保持架，其特征在于，所述第一连接部、所述第二连接部呈圆柱状或锥状。
  6. 一种圆柱滚子轴承，其特征在于，所述圆柱滚子轴承采用权利要求1至5中任一项所述的分段式保持架，通过所述分段式保持架保持所述圆柱滚子轴承的圆柱滚子。
  7. 根据权利要求6所述的圆柱滚子轴承，其特征在于，所述圆柱滚子轴承包括多个所述圆柱滚子，每个所述圆柱滚子的两端面分别设置有保持孔，并且
    所述分段式保持架的一个保持架单元的第一保持部与一个圆柱滚子的 保持孔配合安装，该一个保持架单元的第二保持部与另一个圆柱滚子的保持孔配合安装，所述一个圆柱滚子与所述另一个圆柱滚子在轴承周向上相邻。
  8. 根据权利要求7所述的圆柱滚子轴承，其特征在于，所述保持孔设置于所述端面的圆心处且沿着所述圆柱滚子的中心轴线延伸，并且所述保持孔与所述第一保持部的末端部分和所述第二保持部的末端部分配合安装。
  9. 根据权利要求8所述的圆柱滚子轴承，其特征在于，所述保持孔为通孔或盲孔。
  10. 一种权利要求6至9中任一项所述的圆柱滚子轴承的安装方法，其特征在于，所述安装方法包括如下步骤：
    a.以使得所述圆柱滚子轴承的外圈的一侧接触组装平面的表面的状态将外圈置于组装平面；
    b.将一个圆柱滚子放入外圈滚道并且将所述分段式保持架的一个保持架单元的第一保持部从一侧插入该一个圆柱滚子的保持孔中；
    c.将所述一个保持架单元的第二保持部插入另一个圆柱滚子的保持孔中，并且绕着所述一个圆柱滚子将所述另一个圆柱滚子转动到外圈滚道处；
    d.将所述分段式保持架的另一保持架单元的第一保持部从一侧插入所述另一个圆柱滚子的保持孔中；
    e.重复上述步骤c和d，使所有圆柱滚子与保持架单元连接并组装到所述外圈滚道；以及
    f.将所述圆柱滚子轴承的内圈放入多个圆柱滚子的轴承径向内侧，使所有圆柱滚子位于内圈滚道。
  11. 根据权利要求10所述的安装方法，其特征在于，在所有圆柱滚子安装到所述外圈滚道之后，第一个圆柱滚子与最后一个圆柱滚子不通过所述保持架单元连接。
PCT/CN2017/081208 2016-05-09 2017-04-20 分段式保持架、圆柱滚子轴承及其安装方法 WO2017193785A1 (zh)

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