WO2024016890A1 - 一种可以显示轴力的防松螺母 - Google Patents

一种可以显示轴力的防松螺母 Download PDF

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Publication number
WO2024016890A1
WO2024016890A1 PCT/CN2023/099564 CN2023099564W WO2024016890A1 WO 2024016890 A1 WO2024016890 A1 WO 2024016890A1 CN 2023099564 W CN2023099564 W CN 2023099564W WO 2024016890 A1 WO2024016890 A1 WO 2024016890A1
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Prior art keywords
axial force
nut body
nut
groove
locknut
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Application number
PCT/CN2023/099564
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English (en)
French (fr)
Inventor
罗雁云
周俊召
Original Assignee
上海铁院轨道交通科技有限公司
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Application filed by 上海铁院轨道交通科技有限公司 filed Critical 上海铁院轨道交通科技有限公司
Publication of WO2024016890A1 publication Critical patent/WO2024016890A1/zh

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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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members

Definitions

  • the present invention belongs to the technical field of lock nuts, and more specifically, relates to a lock nut that can display axial force.
  • the anti-loosening nut is a widely used fastener.
  • Many anti-loosening nuts produce anti-loosening effects by increasing the torque of the attachment.
  • this kind of anti-loosening nut is used, due to the influence of the additional torque, the nut has additional anti-retraction performance and exerts corresponding anti-loosening performance.
  • the axial force indicator which means that after the nut is installed, the specified axial force value should be maintained.
  • a certain calculation method has been accumulated in long-term use, which is to determine the corresponding axial force through the installation torque of the nut, and to specify the corresponding installation torque with appropriate axial force requirements. This method has been widely used in practical projects.
  • the anti-loosening nut that uses additional torque changes the relationship between the fastener torque and the axial force, so the traditional method of determining the fastener axial force by relying on the installation torque is no longer effective, and the anti-loosening
  • the additional torque of the nut often changes with the material type and geometric size, making the relationship between the torque and axial force in the fastener more complex and changeable.
  • the uncertain change in the relationship between torque and axial force of this kind of fastener during installation makes it difficult to control the axial force of the fastener during use, which directly affects the guarantee of installation performance. In severe cases, it will also affect the performance of the fastener. System performance and quality. Therefore, in view of this, we study and improve the existing structure and deficiencies, and provide a locknut that can display axial force, in order to achieve a more practical purpose.
  • the purpose of the present invention is to provide an anti-loosening nut that can reflect the installation axial force requirements, which can ensure that the nut meets the anti-loosening performance and at the same time ensure that the nut reaches the specified installation axial force requirements, taking into account both the anti-loosening performance and the installation performance. play to achieve better installation quality.
  • the present invention provides the following solutions:
  • a locknut that can display axial force including a nut body and a washer.
  • the bottom end of the nut body is provided with a flange edge, and the bottom end of the flange edge is provided with a circular installation groove.
  • a groove is provided at the center of the groove, and the top of the groove communicates with the threaded hole of the nut body.
  • a boss is provided at the center of the top of the washer.
  • bosses and grooves are tapered structures that match each other.
  • the present invention has the following beneficial effects:
  • the boss of the washer When the nut of the present invention is installed, the boss of the washer is embedded in the groove of the nut body.
  • the depth of the insertion is related to the tightening degree of the nut body. As the nut body is tightened, the deeper the boss of the washer is embedded in the groove of the nut body. , the anti-loosening teeth on the flange edge of the nut body gradually approach the working surface of the fastener.
  • the boss of the washer When the boss of the washer is embedded in the groove of the nut body to a certain depth, the anti-loosening teeth on the flange edge of the nut body are in contact with the fastener.
  • the working surfaces are in contact, and the fasteners have an anti-loosening effect under the action of the anti-loosening teeth on the flange edge.
  • the axial force of the fasteners at this time can be known according to the depth of the boss embedded in the groove.
  • Figure 1 is an exploded schematic diagram of the overall structure of the present invention.
  • Figure 2 is a schematic cross-sectional view of the locknut of the present invention.
  • Figure 3 is a schematic cross-sectional view of the gasket of the present invention.
  • Figure 4 is a schematic diagram of the bottom structure of the gasket of the present invention.
  • plural means two or more; the terms “upper”, “lower”, “left”, “right”, “inner”, “outer” , “front end”, “rear end”, “head”, “tail”, etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Any indication or implication that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation should not be construed as a limitation on the invention. Furthermore, the terms “first,” “second,” “third,” etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
  • connection should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral connection.
  • Ground connection can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium.
  • specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the present invention provides a locknut that can display axial force, including a nut body 1 and a washer 2.
  • a flange 101 is provided on the bottom side of the nut body 1, and is characterized in that: the bottom of the flange 101
  • a circular mounting groove 102 is provided at the end.
  • a groove 103 is formed at the center of the mounting groove 102.
  • the top of the groove 103 communicates with the threaded hole 104 of the nut body 1.
  • the center of the top of the washer 2 is A boss 201 is provided.
  • multiple sets of anti-loosening teeth 105 are evenly provided on the bottom surface of the flange edge 101 .
  • the boss 201 and the groove 103 are tapered structures that match each other.
  • the boss 201 of the washer 2 When the nut of the invention is installed, the boss 201 of the washer 2 is embedded in the groove 103 of the nut body 1.
  • the depth of the insertion is related to the tightening degree of the nut body 1.
  • the boss 201 of the washer 2 As the nut body 1 is tightened, the boss 201 of the washer 2 is embedded in the nut.
  • the boss 201 of the washer 2 When the boss 201 of the washer 2 is embedded in the groove 103 of the nut body 1 to a certain depth. , the anti-loosening teeth 105 of the flange edge 101 of the nut body 1 are in contact with the working surface of the fastener.
  • the fastener Under the action of the anti-loosening teeth 105 of the flange edge 101, the fastener produces an anti-loosening effect, and the boss 201 is embedded in the concave The depth of groove 103 can determine the axial force of the fastener at this time.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

一种可以显示轴力的防松螺母，包括螺母本体(1)和垫圈(2)，螺母本体(1)的底端侧面设置有法兰边(101)，法兰边(101)的底端开设有圆形的安装槽(102)，安装槽(102)的中心处开设有凹槽(103)，且凹槽(103)的顶端与螺母本体(1)的螺纹孔(104)相通，垫圈(2)的顶端圆心处设置有凸台(201)。本防松螺母在满足防松性能的条件下，保证螺母达到规定的安装轴力要求，获得更好的安装质量。

Description

          一种可以显示轴力的防松螺母 技术领域
本发明属于防松螺母技术领域，更具体地说，特别涉及一种可以显示轴力的防松螺母。
 背景技术
防松螺母是一种应用广泛的紧固件，为满足不同的使用要求和环境，目前有多种类型的防松螺母，许多防松螺母是通过增加附件扭矩来产生防松效果。这种防松螺母在使用时，由于附加扭矩的影响，使螺母产生附加的止退性能，发挥了相应的防松性能。
目前紧固件的使用中，一个最重要基本指标就是轴力指标，就是螺母在安装以后，应保持规定的轴力值。目前对标准螺纹紧固件来说，在长期的使用中，已积累了一定的计算方式，就是通过螺母的安装扭矩来确定对应轴力，通过以适当的轴力要求来规定相应的安装扭矩，该方式已广泛运用在实际工程中。而利用附加扭矩产生作用的防松螺母，由于附加扭矩作用改变了紧固件扭矩与轴力的相互关系，使得依靠安装扭矩来确定紧固件轴力的传统方法不再有效，而且，防松螺母的附加扭矩往往随着材料种类、几何尺寸变化而变化，使得紧固件中的扭矩与轴力的关系更为复杂多变。这种紧固件在安装时扭矩与轴力关系的不确定性变化导致在使用中，对紧固件的轴力控制存在一定的难度，直接影响到安装性能的保证，严重时还会影响到系统的性能和质量。于是，有鉴于此，针对现有的结构及缺失予以研究改良，提供一种可以显示轴力的防松螺母，以期达到更具有更加实用价值性的目的。
 发明内容
本发明的目的是提供一种能够反映安装轴力要求的防松螺母，能够保证螺母满足防松性能的条件下，同时也能保证螺母达到规定的安装轴力要求，兼顾防松性能和安装性能的发挥，达到更好的安装质量。为实现上述目的，本发明提供了如下方案：
一种可以显示轴力的防松螺母，包括螺母本体和垫圈，所述螺母本体的底端侧面设置有法兰边，所述法兰边的底端开设有圆形的安装槽，所述安装槽的中心处开设有凹槽，且所述凹槽的顶端与螺母本体的螺纹孔相通，所述垫圈的顶端圆心处设置有凸台。
进一步的，法兰边的底面均匀设置有多组防松齿。
进一步的，凸台和凹槽为相互匹配的锥形结构。
与现有技术相比，本发明具有如下有益效果：
本发明的螺母在安装时，垫圈的凸台嵌入螺母本体的凹槽，嵌入的深度与螺母本体的拧紧程度有关，随着螺母本体的拧紧，垫圈的凸台嵌入螺母本体的凹槽内越深，螺母本体的法兰边的防松齿逐步靠近紧固体的工作面，当垫圈的凸台嵌入螺母本体的凹槽内一定深度时，螺母本体的法兰边的防松齿与紧固件的工作面相接触，在法兰边的防松齿作用下紧固件产生了防松效果，根据凸台嵌入凹槽深度可以知道紧固件此时的轴力。
 附图说明
图1是本发明总体结构拆分示意图。
图2是本发明防松螺母的剖视示意图。
图3是本发明垫圈剖视示意图。
图4是本发明垫圈底部结构示意图。
图中，部件名称与附图编号的对应关系为：
1、螺母本体；101、法兰边；102、安装槽；103、凹槽；104、螺纹；105、防松齿；
2、垫圈；201、凸台。
 实施方式
下面结合附图和实施例对本发明的实施方式作进一步详细描述。以下实施例用于说明本发明，但不能用来限制本发明的范围。
在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上；术语“上”、“下”、“左”、“右”、“内”、“外”、“前端”、“后端”、“头部”、“尾部”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”等仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
实施例
如附图1至附图4所示：
本发明提供一种可以显示轴力的防松螺母，包括螺母本体1和垫圈2，所述螺母本体1的底端侧面设置有法兰边101，其特征在于：所述法兰边101的底端开设有圆形的安装槽102，所述安装槽102的中心处开设有凹槽103，且所述凹槽103的顶端与螺母本体1的螺纹孔104相通，所述垫圈2的顶端圆心处设置有凸台201。
其中，法兰边101的底面均匀设置有多组防松齿105。
其中，凸台201和凹槽103为相互匹配的锥形结构。
本实施例的具体使用方式与作用：
发明的螺母在安装时，垫圈2的凸台201嵌入螺母本体1的凹槽103，嵌入的深度与螺母本体1的拧紧程度有关，随着螺母本体1的拧紧，垫圈2的凸台201嵌入螺母本体1的凹槽103内越深，螺母本体1的法兰边101的防松齿105逐步靠近紧固体的工作面，当垫圈2的凸台201嵌入螺母本体1的凹槽103内一定深度时，螺母本体1的法兰边101的防松齿105与紧固件的工作面相接触，在法兰边101的防松齿105作用下紧固件产生了防松效果，根据凸台201嵌入凹槽103深度可以知道紧固件此时的轴力。
本发明的实施例是为了示例和描述起见而给出的，而并不是无遗漏的或者将本发明限于所公开的形式。很多修改和变化对于本领域的普通技术人员而言是显而易见的。选择和描述实施例是为了更好说明本发明的原理和实际应用，并且使本领域的普通技术人员能够理解本发明从而设计适于特定用途的带有各种修改的各种实施例。

Claims (3)

  1. 一种可以显示轴力的防松螺母，包括螺母本体(1)和垫圈(2)，所述螺母本体(1)的底端侧面设置有法兰边(101)，其特征在于：所述法兰边(101)的底端开设有圆形的安装槽(102)，所述安装槽(102)的中心处开设有凹槽(103)，且所述凹槽(103)的顶端与螺母本体(1)的螺纹孔(104)相通，所述垫圈(2)的顶端圆心处设置有凸台(201)。
  2. 如权利要求1所述可以显示轴力的防松螺母，其特征在于：所述法兰边(101)的底面均匀设置有多组防松齿(105)。
  3. 如权利要求1所述可以显示轴力的防松螺母，其特征在于：所述凸台(201)和凹槽(103)为相互匹配的锥形结构。
PCT/CN2023/099564 2022-07-21 2023-06-10 一种可以显示轴力的防松螺母 WO2024016890A1 (zh)

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