The utility model discloses a mechanical stretching nut, which comprises a nut jacket, a transfer nut sleeve and a special washer; the nut jacket and the special washer are coaxially arranged on the outer side of the transfer nut sleeve, and the special washer is located at the lower part of the nut jacket. The internal thread of the transfer sleeve is connected with the matching bolt, the external thread is connected with the nut jacket, the external spline or spline-like structure is connected with the special gasket, the outer ring of the nut jacket is connected with the torque applying mechanism, and the outer ring of the special gasket is connected with the torque balancing mechanism. When used, the mechanical tension nut is screwed on the bolt as an integral part, and is tightly attached to the end plane of the connector, and a torque mechanism is applied to drive the nut jacket to rotate; the torsion balance mechanism ensures that when the nut jacket rotates, the connecting nut sleeve and the bolt do not follow, thereby eliminating the rotating moment; the torsion balance mechanism and the applied torque mechanism are coaxial structures, so as to ensure that the nut jacket does not rotate during the fastening process. Bias force, bolts are only subjected to axial tension, load accuracy is higher.
【技术实现步骤摘要】
紧凑型机械拉伸螺母
本技术涉及一种机械拉伸螺母。
技术介绍
专利名称:一种机械拉伸螺母专利(ZL201621104809.X),此类型螺母适用于绝大多数场合。但当轴向空间有限,对螺母厚度有限制,又要兼顾螺牙圈数时,此类型螺母难以保证适用性。为此,将机械拉伸螺母的结构作一些调整,以适应轴向空间受限的场合。
技术实现思路
本实用新公开了一种用于克服轴向空间受限场合的紧凑型机械拉伸螺母。本技术的技术解决方案如下:在
技术介绍
中所述的机械拉伸螺母基础上,将外接扭矩平衡机构和外接施加扭矩机构的接口从其端部转移到圆周位置,从而降低机械拉伸螺母的厚度。一种机械拉伸螺母,包括:转接螺套、螺母外套、专用垫圈,转接螺套的外螺纹与螺母外套的内螺纹相啮合,转接螺套的内部设置有转接内螺纹,螺母外套的底部衬垫有专用垫圈,专用垫圈的内花键与转接螺套外花键相啮合,专用垫圈的底面与转接螺套的底面平齐,螺母外套的顶面与转接螺套的顶面平齐。进一步,所述的螺母外套、专用垫圈同轴设于转接螺套外侧。进一步,所述专用垫圈的表面设置有硬化处理层。进一步,所述专用垫圈的外圈设置有外花键。所述转接螺套设有内螺纹、外螺纹、外花键或类花键结构。其内螺纹与螺栓连接;外螺纹为传动性较好梯形螺纹,在重载、振动及冲击的场合也可使用三角形螺纹。所述螺母外套外,其内螺纹与转接螺套的外螺纹相配;外圈设有正多边形柱、花键等便于传递扭矩的结构,以外接施加扭矩机构。所述专用垫圈的两端面为硬化平面,以防止或减轻转动螺母外套时发生拉毛现象;其内圈为与转接螺套相配合的内花键或类花键结构;外圈为外花键或类花键结构,以外接扭矩平衡机构。附图说明图 ...
【技术保护点】
1.一种紧凑型机械拉伸螺母,包括:转接螺套、螺母外套、专用垫圈,其特征在于:转接螺套的外螺纹与螺母外套的内螺纹相啮合,转接螺套的内部设置有转接内螺纹,螺母外套的底部衬垫有专用垫圈,专用垫圈的内花键与转接螺套外花键相啮合,专用垫圈的底面与转接螺套的底面平齐,螺母外套的顶面与转接螺套的顶面平齐。
【技术特征摘要】
1.一种紧凑型机械拉伸螺母,包括:转接螺套、螺母外套、专用垫圈,其特征在于:转接螺套的外螺纹与螺母外套的内螺纹相啮合,转接螺套的内部设置有转接内螺纹,螺母外套的底部衬垫有专用垫圈,专用垫圈的内花键与转接螺套外花键相啮合,专用垫圈的底面与转接螺套的底面平齐,螺母外套的顶面与转接螺套的顶面平齐...
【专利技术属性】
技术研发人员:陈涛,陈训,
申请(专利权)人:上海本安实业发展有限公司,
类型:新型
国别省市:上海,31
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