CN111706620B - 一种适用于多边形轴的无键联接锁紧环 - Google Patents

一种适用于多边形轴的无键联接锁紧环 Download PDF

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CN111706620B
CN111706620B CN202010638475.9A CN202010638475A CN111706620B CN 111706620 B CN111706620 B CN 111706620B CN 202010638475 A CN202010638475 A CN 202010638475A CN 111706620 B CN111706620 B CN 111706620B
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shaped grooves
locking block
locking
polygonal shaft
shaped
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CN111706620A (zh
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王建梅
宁可
王博
侯定邦
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Zhejiang Zhanggui Bearing Technology Co ltd
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Taiyuan University of Science and Technology
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/0829Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial loading of both hub and shaft by an intermediate ring or sleeve
    • F16D1/0835Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial loading of both hub and shaft by an intermediate ring or sleeve due to the elasticity of the ring or sleeve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/0829Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial loading of both hub and shaft by an intermediate ring or sleeve
    • F16D1/0841Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial loading of both hub and shaft by an intermediate ring or sleeve due to axial loading of the ring or sleeve, e.g. Belleville washers

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Abstract

本发明属于机械传动联接技术领域,具体涉及一种适用于多边形轴的无键联接锁紧环。本发明主要是解决解决现有多边形轴联接方式存在的对中性差、配合精度低、装拆难度大和无法提供过载保护等技术问题。本发明采用的技术方案是:一种适用于多边形轴的无键联接锁紧环,该锁紧环至少由三个锁紧块组成,所述锁紧块的横截面为内外圆弧和两条斜线构成的扇形结构,其外圆弧与外环的内圆相匹配,内圆弧中点和端点的连线与多边形轴表面的夹角γ为0~5°,所述锁紧块内表面至少设置三个n型槽,一个n型槽设在所述锁紧块内表面的中间,其余n型槽对称设置在中间n型槽的两边,所述锁紧块外表面设有至少两个梯形U型槽,且梯形U型槽设置在两n型槽之间。

Description

一种适用于多边形轴的无键联接锁紧环
技术领域
本发明属于机械传动联接技术领域,具体涉及一种适用于多边形轴的无键联接锁紧环。
背景技术
传动联接件作为机械传动系统的核心组成部分,起到传递转矩、承载轴向力的重要作用。无键联接通过联接件之间的摩擦作用实现载荷传递,相对于有键联接,在承载能力、对中性、易于装拆、过载保护等方面具有更多优势,被广泛应用于风力发电、冶金机械、矿山起重、高端数控机床、新能源车辆等领域。近年来,随着传动技术要求的提高,不再局限于传统形式的圆形轴,出现三边形轴、四边形轴、六边形轴等多边形轴。现有多边形轴联接方式主要包括过盈套装和有键联接,其存在着对中性差,配合精度低,装拆难度大,无法提供过载保护等技术问题。
发明内容
本发明的目的是解决现有多边形轴联接方式存在的对中性差、配合精度低、装拆难度大和无法提供过载保护等技术问题,提供一种适用于多边形轴的无键联接锁紧环。
为解决上述技术问题,本发明采用的技术方案是:
一种适用于多边形轴的无键联接锁紧环,该锁紧环至少由三个锁紧块组成,所述锁紧块的横截面为内外圆弧和两条斜线构成的扇形结构,其外圆弧与外环的内圆相匹配,内圆弧中点和端点的连线与多边形轴表面的夹角γ为0~5°,所述锁紧块内表面至少设置三个n型槽,一个n型槽设在所述锁紧块内表面的中间,其余n型槽对称设置在中间n型槽的两边,所述锁紧块外表面设有至少两个梯形U型槽,且梯形U型槽设置在两n型槽之间。
进一步地,所述n型槽和梯形U型槽的数量根据多边形轴的长度确定。
进一步地,所述锁紧块扇形横截面的圆心角α为10°~120°。
进一步地,所述n型槽的宽度d为3~6mm,槽顶端设置有倒圆角。
进一步地,所述梯形U型槽的斜边与底边的夹角β为100°~120°。
进一步地,所述锁紧块的数量根据传动轴的形状确定。
本发明的有益效果为:
本发明针对多边形轴,在锁紧环的内、外表面分别设置了n型槽和梯形U型槽,利用锁紧环的变形,将螺栓的轴向预紧力Fa转化为接触面的径向压力Fr,使外环、锁紧环与多边轴形成压紧状态,通过接触面摩擦作用实现转矩和轴向力的传递。
本发明不仅能够承受轴向、切向多重载荷,同时易于装拆,可以在转矩较大时,利用接触面打滑提供过载保护。此外,锁紧环内表面为弧形面,可以有效地减少由于螺栓预紧、锁紧环内径收缩给多边形轴带来的破坏。利用多圆弧结构配合的方式,很好的提升了装配同心度和传动精度。解决了现有多边形轴联接方式存在的对中性差、配合精度低、装拆难度大和无法提供过载保护等技术问题。与背景技术相比,本发明具有能够承受轴向、切向多重载荷,易于装拆,受力均匀、可靠性高、可以提供过载保护等优点。
此外,本发明根据主机传动系统尺寸要求,可以定制化得到设计尺寸,有效地实现了主机传动系统的升级改造。
附图说明
图1为本发明与三角形轴的配合图;
图2为本发明锁紧块的结构示意图;
图3为本发明锁紧块的主视图;
图4为本发明锁紧块三维图;
图5为本发明的装配图;
图6为本发明与四边形轴配合图;
图7为本发明与六边形轴配合图;
图中:1-外环,2-锁紧块,3-多边形轴,4-螺栓,5-梯形U型槽,6-n型槽,7-螺栓孔,Fa-轴向预紧力,d-n型槽的宽度,β-梯形U型槽的斜边与底边的夹角,Fr-径向压力,α-锁紧块扇形横截面的圆心角,γ-内圆弧中点和端点的连线与多边形轴表面的夹角。
具体实施方式
下面结合附图和实施例对本发明作进一步的描述:
如图1~图5所示,本实施例中的一种适用于多边形轴的无键联接锁紧环,该锁紧环由三个锁紧块2组成,所述锁紧块2的横截面为内外圆弧和两条斜线构成的扇形结构,其外圆弧与外环1的内圆相匹配,内圆弧中点和端点的连线与多边形轴表面的夹角γ为2°,所述锁紧块2内表面设置三个n型槽6,一个n型槽6设在所述锁紧块2内表面的中间,其余n型槽6对称设置在中间n型槽的两边,所述锁紧块2外表面设有两个梯形U型槽5,且U型槽5设置在两n型槽6之间,所述锁紧块2上设有两个带螺纹的螺栓孔7。
所述锁紧块扇形横截面的圆心角α为120°。所述n型槽的宽度d为4mm,槽顶端设置有倒圆角,倒圆角为R1~R3mm。所述梯形U型槽5的斜边与底边的夹角β为100°,梯形U型槽5底部设有倒角,倒角值为C1~C3mm。
上述实施例中的n型槽和梯形U型槽的数量根据多边形轴的长度可以适当增加。
上述实施例中的锁紧块2的数量根据传动轴的形状确定。锁紧块扇形横截面的圆心角α可以在10°~120°之间任意选择。
上述实施例中的内圆弧中点和端点的连线与多边形轴表面的夹角γ可以在0~5°之间任意选择,n型槽的宽度d可以取值为3~6mm,梯形U型槽5的斜边与底边的夹角β还可在100°~120°之间任意选择。
本发明的工作原理为:
如图5所示,锁紧块2套装在多边形轴3上,外环1套装在锁紧块2上,使用螺栓4施加轴向预紧力。如图2所示,锁紧环局部受力时,轴向收缩,梯形U型槽5变窄,向外胀大,促使锁紧环与外环接触压紧。纵向n型槽6变窄,向内胀大,促使锁紧环与多边形轴压紧,最终多边形轴、外环、锁紧环实现紧固联接。
如图3、图4所示,锁紧块2通过内外表面双圆弧的结构形式,满足多边形轴的使用要求。如图1、6~7所示,对于三边形轴选用三个锁紧块2与外环配合、四边形轴选用四个锁紧块2、六边形轴选用六个锁紧块2。针对多边形轴的需求选用不同数量的锁紧块。安装方式选用螺栓对角安装,通过力矩扳手达到相应的预紧力。维修过程,拆卸螺栓后即可实现锁紧环与外环的更换。

Claims (1)

1.一种适用于多边形轴的无键联接锁紧环,其特征在于:该锁紧环至少由三个锁紧块组成,所述锁紧块的横截面为内外圆弧和两条斜线构成的扇形结构,其外圆弧与外环的内圆相匹配,内圆弧中点和端点的连线与多边形轴表面的夹角γ为0~5°,所述锁紧块内表面至少设置三个n型槽,一个n型槽设在所述锁紧块内表面的中间,其余n型槽对称设置在中间n型槽的两边,所述锁紧块外表面设有至少两个梯形U型槽,且梯形U型槽设置在两n型槽之间;
所述n型槽和梯形U型槽的数量根据多边形轴的长度确定;
所述锁紧块扇形横截面的圆心角α为10°~120°;
所述n型槽的宽度d为3~6mm,槽顶端设置有倒圆角;
所述梯形U型槽的斜边与底边的夹角β为100°~120°;
所述锁紧块的数量根据传动轴的形状确定。
CN202010638475.9A 2020-07-06 2020-07-06 一种适用于多边形轴的无键联接锁紧环 Active CN111706620B (zh)

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CN201802775U (zh) * 2010-09-29 2011-04-20 天津赛瑞机器设备有限公司 一种新型胀紧连接套
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