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CN203272441U - 一种机舱底架和主轴的连接结构 - Google Patents

一种机舱底架和主轴的连接结构 Download PDF

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Publication number
CN203272441U
CN203272441U CN2013202209991U CN201320220999U CN203272441U CN 203272441 U CN203272441 U CN 203272441U CN 2013202209991 U CN2013202209991 U CN 2013202209991U CN 201320220999 U CN201320220999 U CN 201320220999U CN 203272441 U CN203272441 U CN 203272441U
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China
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bearing
main shaft
engine room
connecting structure
loads
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Expired - Fee Related
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CN2013202209991U
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赵炳胜
蔡晓峰
陈虎
刘衍选
马斌
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Shenyang China Creative Wind Energy Co Ltd
China Creative Wind Energy Co Ltd
Ningxia China Creative Wind Energy Co Ltd
Qingdao China Creative Wind Energy Co Ltd
Tongliao China Creative Wind Energy Co Ltd
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Shenyang China Creative Wind Energy Co Ltd
Ningxia China Creative Wind Energy Co Ltd
Qingdao China Creative Wind Energy Co Ltd
Tongliao China Creative Wind Energy Co Ltd
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Application filed by Shenyang China Creative Wind Energy Co Ltd, Ningxia China Creative Wind Energy Co Ltd, Qingdao China Creative Wind Energy Co Ltd, Tongliao China Creative Wind Energy Co Ltd filed Critical Shenyang China Creative Wind Energy Co Ltd
Priority to CN2013202209991U priority Critical patent/CN203272441U/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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/042—Housings for rolling element bearings for rotary movement
    • F16C35/047—Housings for rolling element bearings for rotary movement with a base plate substantially parallel to the axis of rotation, e.g. horizontally mounted pillow blocks
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
    • F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F16C19/385—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
    • 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
    • F16C2360/31—Wind motors

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

Abstract

一种机舱底架和主轴的连接结构，包括主轴和机舱底架，所述机舱底架在与主轴连接的位置设置有同轴的第一、第二轴承座，所述主轴通过两轴承安装于机舱底架上，两轴承座内径分别与对应安装的轴承外圈相配合。本实用新型采用两个主轴轴承支撑主轴的结构。其中前主轴轴承为圆柱滚子轴承，主要承受径向载荷；后主轴轴承为双列圆锥滚子轴承，主要承受以径向载荷为主的径向与轴向联合载荷。本实用新型可以承载更大的径向及轴向载荷，并且又不需要轴承做的太大。本实用新型机舱底架上前、后两个轴承座与机舱底座是一体式的，可以保证前、后两个轴承座的同轴度等形位公差，最终使得整个结构能够优化风力发电机的载荷承载路径，大大缓解传动链所受的载荷。

Description

一种机舱底架和主轴的连接结构
技术领域
本发明属于风力发电技术领域，特别是涉及一种机舱底架和主轴的连接结构。
背景技术
在如今安装的风力发电机中，有75%～80%采用的是主轴轴承支撑原理，也就是主轴承的内圈安装在旋转的主轴上，外圈安装在固定的轴承座里。主轴起支承轮毂及叶片，传递扭矩到增速箱的作用。主轴轴承主要承受径向力，其性能的好坏不仅对传递效率有影响，而且也决定了主传动链的维护成本，所以要求具有良好的调心性能、抗振性能和运转平稳性。大容量的风力发电机由于具有更大直径的风轮，所以可以捕获更多的风能。但它所受的风的载荷以及自身的重量也会相应变大。这就使得在设计大容量风力发电机时，需要对它的主轴支撑结构进行特殊设计。现有的机舱底架与主轴间一般采用一个轴承支撑，其稳定性差。尤其是大容量风力发电机更不适用。
发明内容
针对上述存在的技术问题，本发明提供一种机舱底架和主轴的连接结构，它通过改变机舱底架的结构，使得主轴与机舱底架的连接更加稳固。
本发明的目的是通过以下技术方案来实现的：
一种机舱底架与主轴的连接结构，包括主轴和机舱底架，所述机舱底架在与主轴连接的位置设置有同轴的第一、第二轴承座，所述主轴通过两轴承安装于机舱底架上，两轴承座内径分别与对应安装的轴承外圈相配合。
进一步地，所述第一轴承座内设置圆柱滚子轴承。
进一步地，所述第二轴承座内设置双列圆锥滚子轴承。
本发明的有益效果为：
1.本发明采用两个主轴轴承支撑主轴的结构。其中前主轴轴承为圆柱滚子轴承，主要承受径向载荷；后主轴轴承为双列圆锥滚子轴承，主要承受以径向载荷为主的径向与轴向联合载荷。双主轴轴承支撑主轴的结构可以承载更大的径向及轴向载荷，并且又不需要轴承做的太大。
2.本发明机舱底架上前、后两个轴承座与机舱底座是一体式的。这样，可以通过后续的机械加工保证前、后两个轴承座的同轴度等形位公差，最终使得整个结构能够优化风力发电机的载荷承载路径，大大缓解传动链所受的载荷。
附图说明
图1为本发明的结构示意图。
图2为图1中的机舱底架。
图3为图1中的圆柱滚子轴承。
图4为图1中的双列圆锥滚子轴承。
图中：1. 圆柱滚子轴承，11.外圈，12. 滚子，13.内圈，14. 保持架， 2. 双列圆锥滚子轴承，21.外圈，22.保持架，23.内圈，24.滚子，25.外隔圈，3.机舱底架，31. 第一轴承座，32. 第二轴承座，4.主轴。
具体实施方式
下面通过实施例和附图对本发明作进一步详述。
实施例： 参见图1，一种机舱底架与主轴的连接结构，包括主轴4和机舱底架3，所述机舱底架3在与主轴4连接的位置设置有第一、第二轴承座31、32，所述主轴4通过两轴承安装于机舱底架3上，两轴承座内径分别与对应安装的轴承外圈相配合。
所述第一轴承座31内设置圆柱滚子轴承1。参见图3，此类轴承负荷能力大，主要承受径向负荷。在圆柱滚子轴承1中，滚动体为圆柱形滚子，滚子与滚道为线接触或修下线接触，径向承载能力大，适用于承受重负荷与冲击负荷。轴承内圈或外圈可分离，便于安装和拆卸。
所述第二轴承座32内设置双列圆锥滚子轴承2。参见图2，此类轴承主要用于承受以径向载荷为主的径向与轴向联合载荷，并且能够限制轴沿一个方向的轴向位移。在双列圆锥滚子轴承2中，滚动体为圆锥形滚子，内、外圈均具有锥形滚道，轴承承载能力取决于外圈的滚道角度，角度越大承载能力越大。
参见图2，本发明中的机舱底架3为球墨铸铁件，第一、第二主轴轴承座31、32与机舱底架3是一体铸造出来的。通过后续的机械加工，可以很好地控制两个轴承座的同轴度等形位公差，这样就可以保证两个主轴轴承与第一、第二轴承座31、32及主轴4的装配精度，确保整机的平稳运转。
参见图1-4，本发明在装配时，先将主轴4倒立置于平地，接着加热圆柱滚子轴承1的内圈13，安装在主轴4上，再组装滚子12、保持架14和外圈11。然后加热机舱底架3的后主轴轴承座位置，再把后主轴轴承安装于轴承座内。最后，同时加热第二轴承座32及双列圆锥滚子轴承2的内圈23，待达到预定温度后，把机舱底架3整体吊起，落置于主轴4之上，待温度冷却后，整个装配完成。

Claims (3)

1.一种机舱底架和主轴的连接结构，包括主轴和机舱底架，其特征在于：所述机舱底架在与主轴连接的位置设置有同轴的第一、第二轴承座，所述主轴通过两轴承安装于机舱底架上，两轴承座内径分别与对应安装的轴承外圈相配合。
2.根据权利要求1所述机舱底架和主轴的连接结构，其特征在于：所述第一轴承座内设置圆柱滚子轴承。
3.根据权利要求1所述机舱底架和主轴的连接结构，其特征在于：所述第二轴承座内设置双列圆锥滚子轴承。
CN2013202209991U 2013-04-27 2013-04-27 一种机舱底架和主轴的连接结构 Expired - Fee Related CN203272441U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105508155A (zh) * 2015-12-31 2016-04-20 北京金风科创风电设备有限公司 风力发电机组

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105508155A (zh) * 2015-12-31 2016-04-20 北京金风科创风电设备有限公司 风力发电机组
CN105508155B (zh) * 2015-12-31 2021-06-01 北京金风科创风电设备有限公司 风力发电机组

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