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WO2017067324A1 - 一种螺纹连接防松紧锁装置 - Google Patents

一种螺纹连接防松紧锁装置 Download PDF

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Publication number
WO2017067324A1
WO2017067324A1 PCT/CN2016/097080 CN2016097080W WO2017067324A1 WO 2017067324 A1 WO2017067324 A1 WO 2017067324A1 CN 2016097080 W CN2016097080 W CN 2016097080W WO 2017067324 A1 WO2017067324 A1 WO 2017067324A1
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WO
WIPO (PCT)
Prior art keywords
locking
ring
cylinder
locking ring
nut
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Application number
PCT/CN2016/097080
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English (en)
French (fr)
Inventor
刘琰嵬
Original Assignee
广州市施达升专用设备制造有限公司
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Application filed by 广州市施达升专用设备制造有限公司 filed Critical 广州市施达升专用设备制造有限公司
Publication of WO2017067324A1 publication Critical patent/WO2017067324A1/zh
Priority to US15/955,638 priority Critical patent/US10605294B2/en

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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
    • 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
    • F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
    • 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
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt
    • 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
    • F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts

Definitions

  • the present invention relates to the field of bolting, and more particularly to a locking device suitable for preventing loosening of a nut under low torque conditions.
  • the thread-locking locking technology applied to bolts and nut structures on the market is under the national standard torque, or the compression of the threaded connection is based on the national standard torque, including the pad. Sheet, hex nut, screw and so on.
  • the true test of the true locking of the threaded connection comes from the low torque, especially the looseness of the low torque in the vibrating environment.
  • the threaded connection under a lot of working conditions, including soft substrate, stainless steel bolts, etc. does not allow the application of large torque to the threaded connection, while the threaded connection often faces huge vibrations, against loosening
  • the locking requirements are particularly high. Therefore, how to solve the problem of loose locking of threaded connections under low torque and how to solve the problem of locking and locking of threaded connections in vibration environment has always been an international technical problem.
  • the invention relates to a threaded anti-locking device, comprising:
  • Bolts including screws with external threads
  • a locking member comprising a cylinder having a through hole, the axial cross-sectional shape and size of the through hole corresponding to an axial cross-sectional shape and size of the outer surface of the nut, and a buckle at one end of the cylinder a locking ring at the cylinder port, the center of the locking ring is provided with a circular hole having the same outer diameter as the screw, and a side of the locking ring away from the cylindrical body is provided with a locking pattern;
  • the locking gasket includes a gasket hole disposed at a central portion and having the same outer diameter as the screw, and is disposed on one side of the locking gasket to be interlocked with the locking pattern of the locking ring Anti-skid lines that rotate around the circumference.
  • the axial length of the through hole of the cylinder is greater than or equal to half of the length of the nut in the axial direction or its axial length.
  • the outer surface of the cylinder is cylindrical, and the locking gasket is a circular gasket corresponding to the outer shape of the cylinder.
  • the locking pattern on the locking ring is formed by a plurality of stepped gears uniformly distributed around the circular hole, and the stepped tooth table includes an upward extending surface of the locking ring a bevel, and a section perpendicular to the surface of the locking ring by the top end of the bevel.
  • the anti-slip structure on the locking washer corresponds to the shape of the stepped tooth on the locking ring, and the rising angle of the inclined surface is the same, but the rotational directions of the stepped pedestals of the two are opposite.
  • the outer surface of the nut is hexagonal, and the axial cross-sectional shape of the through hole of the locking member is a rectangle that fits the shape of the outer surface of the nut.
  • the locking gasket is away from one side of the cylinder, and is provided with a gripping pattern for improving the ability to contact the substrate.
  • the gripping pattern includes a plurality of wedge-shaped racks, and the wedge-shaped racks are outwardly convexly formed by a surface of the locking washer, and the wedge-shaped racks are evenly distributed on the locking washers. On the surface, and the axis of each of the wedge-shaped racks passes through the center of the lock washer.
  • the locking ring is provided with a concave annular groove, and the outer circumference of the annular groove is provided with a groove arranged at intervals, outside the locking ring A locking lever corresponding to the shape and size of the groove is disposed on the circumference, and after the locking ring is installed in the annular recess, the locking rod is respectively engaged in the groove.
  • the locking ring is provided with a concave annular recess, the outer circumference of the annular recess is an inner polygon, and the outer circumference of the locking ring is opposite to the ring
  • the outer circumferential shape of the concave ring corresponds to an outer polygon.
  • the locking relationship between the locking members can limit the rotation of the nut during vibration, prevent the current fixing relationship from loosening, and improve the fixing effect of the fixing point.
  • the structure of the present invention is simple, and the corresponding locking structure can be replaced according to different fixing requirements.
  • FIG. 1 is a schematic structural view of a locking device according to an embodiment of the present invention.
  • Figure 2 is a schematic view showing the structure of the stepped tooth table of the cylinder shown in Figure 1;
  • Figure 3 is a schematic view showing the structure of a cylinder according to an embodiment of the present invention.
  • Figure 4 is a schematic view showing the structure of the lock ring in cooperation with the cylindrical structure shown in Figure 3;
  • Figure 5 is a schematic view showing the structure of a cylinder according to another embodiment of the present invention.
  • Figure 6 is a schematic view showing the structure of the lock ring engaged with the cylinder shown in Figure 5.
  • the threaded anti-locking device of the present invention generally comprises: a bolt 4 with an externally threaded screw, and a nut 3 with an internal thread and capable of forming a threaded connection with the bolt 4, and a lock nut 3 a locking member that rotates on the bolt 4, and a locking washer 2 that defines the rotation of the locking member.
  • the locking member includes a barrel 2 having a through hole 21 whose axial cross-sectional shape and size correspond to the axial cross-sectional shape and size of the outer surface of the nut 3, so that the nut 3 can enter the through hole 21.
  • a locking ring 25 sealed at the port of the cylinder 2
  • the center of the locking ring 25 is provided with a circular hole 27 having the same outer diameter as the screw, so that the locking member can be placed on the bolt 4.
  • a locking pattern is provided on the surface of the lock ring 27 away from the side of the tubular body 2.
  • the locking gasket 1 includes a gasket hole 13 disposed at a central portion and having the same outer diameter as that of the bolt 4, so that the locking gasket 1 can be placed on the bolt 4, and a lock is provided on one side of the locking gasket 13. After the locking pattern of the ring 25 is contacted, the anti-slip lines of the circumferential rotation can be locked to each other.
  • the bolt 4 is passed through the fixing hole of the component to be fixed, and then the locking heat piece is sleeved on the bolt 4 from the other end, and then the cylinder 2 is placed on the bolt 4, and the opening of the through hole in the cylinder body One end is located away from the side of the component to be fixed, and finally the nut 3 is placed on the bolt 4, and the nut 3 enters the through hole 21 as it is screwed.
  • the length of the through hole 21 of the cylinder 2 in the axial direction may be greater than or equal to the length or half of the nut 3 in the axial direction, that is, the cylinder 2 may accommodate the entire nut 3 or accommodate half of the nut 3 to enable the nut 3 to A stable clamping relationship is prevailing.
  • One side of the locking gasket 1 is in contact with the component to be fixed, and the gasket 1 is locked
  • the other side is in contact with one end of the locking ring 25 of the cylinder 2 through the anti-slip pattern, and is interlocked by the grain contact of the two.
  • the vibration of the component to be fixed is transmitted to the locking component, and the mutual locking of the locking component can reduce the vibration, and the rotation of the locking component can be prevented due to the locking of the locking component, thereby preventing the locking component from rotating.
  • the nut turns.
  • the locking pattern on the locking ring 25 may be constituted by a plurality of stepped tooth stages 22 uniformly distributed on the surface centering on the circular hole 27.
  • the stepped tooth table 22 may include a slope extending upward from the surface of the lock ring 25, and a section perpendicular to the surface of the lock ring 25 by the tip end of the slope.
  • the width of the slope in the radial direction may be the same as the radial width of the lock ring 25.
  • the stepped tooth stages 22 on the surface may not be connected to each other, i.e., the cross section of the rear stepped tooth stage 22 is close to the start end of the inclined surface of the preceding stepped tooth stage 22.
  • the number of the stepped gears 22 can be set according to the size of the locking members. For example, when the conventional bolts 4 are placed, the stepped gears 22 on the locking ring 25 can be arranged 5-7.
  • the anti-slip pattern on the locking washer 1 may be a structure that cooperates with the section of the stepped tooth table 22, such as a stopper protruding from the surface of the locking washer parallel to the cross section, or recessed in the lock The groove of the surface of the gasket 1 is tight. It is also possible to adopt the same stepped tooth table 11 structure as the stepped tooth table 22, and the inclination angles of the inclined faces of the two can be the same, but in order to form the interlocking state, the stepped tooth table 11 on the locking pad 1 is locked. The direction of rotation needs to be opposite to the direction of rotation of the stepped tooth table 22.
  • the other surface of the locking gasket 1 opposite to the side on which the anti-slip surface is disposed may be provided with a gripping pattern capable of improving the ability to grasp the contact surface.
  • the specific grasping pattern may adopt a structure of a wedge-shaped rack 12 which is formed by outwardly convex from the surface of the lock washer 1.
  • the plurality of wedge-shaped racks 12 are evenly distributed on the surface of the lock washer 1, the small-diameter end of each wedge-shaped rack 12 is close to the washer hole 13 of the lock washer 1, and the large-diameter end is close to the lock washer 1
  • the outer circumference, and the axis of each of the wedge-shaped racks 12 passes through the center of the lock washer 1.
  • the outer surface of the cylinder 2 may be cylindrical, rectangular or polygonal, and the shape of the locking gasket 1 may correspond to the outer shape of the cylinder 2.
  • the end surface of one end of the cylinder 2 to which the locking ring 25 is mounted may be provided with a concave annular recess 23
  • a groove 24 is arranged on the outer circumference of the annular recess 23, and a locking groove 26 corresponding to the shape and size of the groove 24 is provided on the outer circumference of the locking ring 23, and the locking ring 25 is provided.
  • the diameter is the same as the diameter of the annular recess 23 and can be embedded in the annular recess 23.
  • the locking rotation effect of the lock ring 25 and the tubular body 2 can be achieved, and the lock ring 25 can be replaced after the lock ring 25 is worn.
  • the service life of the locking member can be improved.
  • the locking structure of the locking gasket 1 and the locking ring 25 can be replaced according to actual conditions under different vibration environments, so as to improve or maintain a certain locking effect and improve the application of the locking component. range.
  • the replaceable locking ring 25 is further configured to: at one end of the cylinder 2 on which the locking ring 25 is mounted, a concave annular recess 23 is provided.
  • the outer circumference of the annular recess 23 is an inner polygon
  • the outer circumference of the lock ring 25 is an outer polygon corresponding to the outer circumferential shape of the annular recess 23.
  • the annular recess The ring 23 can define the rotation of the locking ring 25 in the circumferential direction by the inner polygon.
  • the structure of this embodiment facilitates the mounting of the lock ring 25 and the cylinder 2.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Prostheses (AREA)
  • Gasket Seals (AREA)

Abstract

一种螺纹连接防松紧锁装置，包括：带有外螺纹螺杆的螺栓（4），和带有内螺纹的螺母（3），用于锁止螺母在螺栓上转动的锁紧件，以及进一步限定锁紧件转动的锁紧垫片（1）。通过锁紧件与锁紧垫片（1）的配合，利用相互锁止的配合关系，能够限制螺母在震动时的转动，防止当前固定关系松动。

Description

一种螺纹连接防松紧锁装置 技术领域
本发明涉及螺栓固定领域，特别是涉及一种适用于低扭矩条件下防止螺帽松动的紧锁装置。
背景技术
目前，市面上应用于螺栓、螺帽结构的螺纹连接防松锁紧技术均是在国家标准扭矩下，或者均是基于国家标准扭矩下，对螺纹连接进行防松锁紧的研究，包括对垫片，六角螺母，螺型等等。然而，真正对螺纹连接防松锁紧的最大考验，来自于低扭矩下，特别是低扭矩在振动环境下的松动问题。在实际生产过程中，螺纹连接在非常多的工况下，包括软基材，不锈钢螺栓等等，不允许对螺纹连接施加大的扭矩，同时螺纹连接往往又对面临巨大的振动，对防松锁紧要求特别高。因此，如何解决低扭矩下螺纹连接的防松锁紧问题，以及如何解决振动环境下螺纹连接的防松锁紧问题一直是个国际性的技术难题。
发明内容
本发明涉及的螺纹连接防松紧锁装置，包括：
螺栓，包括带有外螺纹的螺杆；
螺母，带有内螺纹，且与螺杆形成螺纹连接；
锁紧件，包括带有通孔的筒体，所述通孔的轴向截面形状和尺寸与所述螺母外表面的轴向截面形状和尺寸对应，在所述筒体的一端设置有扣在所述筒体端口处的锁止环，所述锁止环的中心设置有与所述螺杆外径相同的圆孔，所述锁止环远离所述筒体的一面设置有锁止纹；
锁紧垫片，包括在中心部位设置的与所述螺杆的外径相同的垫片孔，在所述锁紧垫片的一面设置有与所述锁止环的锁止纹接触后能够相互锁止圆周转动的防滑纹。
进一步地，所述筒体的通孔的轴向长度，大于或等于所述螺母在轴向上的长度或其轴向长度的一半。
进一步地，所述筒体的外表面为圆柱形，所述锁紧垫片为与所述筒体的外形对应的圆形垫片。
进一步地，所述锁止环上的锁止纹由以所述圆孔为中心均匀分布的多个阶梯形齿台构成，所述阶梯形齿台包括由所述锁止环的表面向上延伸的斜面，和由所述斜面的顶端垂直于所述锁止环表面的断面。进一步地，所述锁紧垫片上的防滑纹结构与所述锁止环上的阶梯形齿台的形状对应，且斜面的升角相同，但两者的阶梯形齿台的旋转方向相反。
进一步地，所述螺母的外表面为六角形，所述锁紧件的通孔的轴向截面形状为与所述螺母外表面形状配合的长方形。
进一步地，所述锁紧垫片远离所述筒体的一面，设置有提高与接触基材抓附能力的抓附纹。
进一步地，所述抓附纹包括多个楔形齿条，所述楔形齿条由所述锁紧垫片的表面向外凸起形成，所述楔形齿条均匀分布在所述锁紧垫片的表面上，且各所述楔形齿条的轴线穿过所述锁紧垫片的圆心。
进一步地，在所述筒体安装所述锁止环的一端设置有内凹的环形凹圈，在所述环形凹圈的外圆周上设置有间隔排列的凹槽，所述锁止环的外圆周上设置有与所述凹槽形状和尺寸对应的锁止杆，所述锁止环安装在所述环形凹圈内后，所述锁止杆分别卡入所述凹槽内。
进一步地，在所述筒体安装所述锁止环的一端设置有内凹的环形凹圈，所述环形凹圈的外圆周为内多边形，所述锁止环的外圆周为与所述环形凹圈的外圆周形状对应的外多边形，所述锁止环安装在所述环形凹圈内后，所述环形凹圈通过内多边形限定所述锁止环在所述圆周方向上的转动。
本发明通过锁紧件与锁紧垫片的配合，利用相互锁止的配合关系，能够限制螺母在震动时的转动，防止当前固定关系松动，提高固定点的固定效果。而且，本发明的结构简单，可以根据不同的固定要求，更换相应的锁止结构。
附图说明
图1是根据本发明一个实施例的紧锁装置的结构示意图；
图2是图1所示筒体的阶梯形齿台结构示意图；
图3是本发明一个实施例的筒体结构示意图；
图4是与图3所示筒体结构配合的锁止环结构示意图；
图5是本发明另一个实施例的筒体结构示意图；
图6是与图5所示筒体配合的锁止环结构示意图。
具体实施方式
如图1所示，本发明的螺纹连接防松紧锁装置一般性地包括：带有外螺纹螺杆的螺栓4，和带有内螺纹且与螺栓4能够形成螺纹连接的螺母3，和锁定螺母3在螺栓4上旋转的锁紧件，以及限定锁紧件转动的锁紧垫片2。
该锁紧件包括带有通孔21的筒体2，通孔21的轴向截面形状和尺寸与螺母3外表面的轴向截面形状和尺寸对应，使得螺母3能够进入通孔21。在筒体2的一端设置有封在筒体2端口处的锁止环25，该锁止环25的中心设置有与螺杆外径相同的圆孔27，使得锁紧件可以套在螺栓4上，如图2所示，在锁止环27远离筒体2一面的表面设置有锁止纹。
该锁紧垫片1包括在中心部位设置的与螺栓4的外径相同的垫片孔13，使锁紧垫片1可以套在螺栓4上，在锁紧垫片13的一面设置有与锁止环25的锁止纹接触后能够相互锁止圆周转动的防滑纹。
在使用时，将螺栓4穿过待固定部件的固定孔，再将锁紧热片由另一端套在螺栓4上，再将筒体2套在螺栓4上，且筒体上通孔的开口一端位于远离待固定部件一侧，最后将螺帽3套在螺栓4上，螺帽3随着拧动，会进入通孔21内。筒体2的通孔21在轴向上的长度，可以大于或等于螺母3在轴向上的长度或一半，即筒体2可以容纳整个螺母3或容纳半个螺母3，以对螺母3能够形成稳定的夹持关系为准。锁紧垫片1的一面与待固定部件接触，锁紧垫片1的 另一面通过防滑纹与筒体2的锁止环25带锁止纹一端接触，并通过两者的纹路接触形成相互锁止。
在上述结构下，待固定部件的震动会传递至锁紧件上，而锁紧件的相互锁止在减轻震动的同时，因为自身的锁止，又可避免锁紧件产生转动动作，从而防止了螺帽转动。
为提高锁紧效果，该锁止环25上的锁止纹可以是：以其圆孔27为中心而均匀分布在表面上的多个阶梯形齿台22构成。该阶梯形齿台22可以包括由锁止环25的表面向上延伸的斜面，和由斜面的顶端垂直于锁止环25表面的断面。斜面在径向上的宽度可以与锁止环25的径向宽度相同。
在该表面上的阶梯形齿台22相互之间可以不连接，即后一个阶梯形齿台22的断面靠近前一个阶梯形齿台22的斜面起始端。具体的阶梯形齿台22数量可以根据锁紧件的尺寸设置，如套在常规的螺栓4上时，该锁止环25上的阶梯形齿台22可以设置5-7个。
进一步地，该锁紧垫片1上的防滑纹可以是与阶梯形齿台22的断面相配合的结构，如与断面平行的凸出于锁紧垫片表面的挡块，或内凹于锁紧垫片1表面的凹槽。也可以采用与阶梯形齿台22同样的阶梯形齿台11结构，两者的斜面的升角也可以相同，但为了形成相互锁止状态，锁紧垫片1上的阶梯形齿台11的旋转方向需要与阶梯形齿台22的旋转方向相反。
为提高锁紧垫片1与待固定部件的抓附力，该锁紧垫片1上与设置防滑纹一面相对的另一面，可以设置能够提高抓附接触面能力的抓附纹。通过抓附纹可以使锁紧垫片1提高相对待固定部件接触面的摩擦，可以防止锁紧垫片1或减小锁紧垫片1的转动，进而提高锁紧件限制螺母3转动的效果。
具体的抓附纹可以采用楔形齿条12的结构，该楔形齿条12由锁紧垫片1的表面向外凸起形成。多个楔形齿条12均匀分布在锁紧垫片1的表面上，各楔形齿条12的小直径端靠近锁紧垫片1的垫片孔13，而大直径端靠近锁紧垫片1的外圆周，且各楔形齿条12的轴线穿过锁紧垫片1的圆心。通过形成凹凸结构的楔形齿条12，可以增大与接触基体的摩擦效果。
Figure PCTCN2016097080-appb-000001
此外，该筒体2的外表面可以为圆柱形、矩形或多边形，该锁紧垫片1外形可以与筒体2的外形对应。
如图3、4所示，为了方便更换磨损后的锁紧件，在本发明的一个实施例中，可以将筒体2安装锁止环25的一端的端面上设置内凹的环形凹圈23，在环形凹圈23的外圆周上外凸设置有间隔排列的凹槽24，在锁止环23的外圆周上可以设置与凹槽24形状和尺寸对应的锁止杆26，锁止环25的直径与环形凹圈23的直径相同，且可嵌入环形凹圈23内。当锁止环25安装在环形凹圈23内后，锁止环25上的锁止杆26可以分别卡入凹槽24内。通过上述结构，既可以实现锁止环25和筒体2的锁止转动效果，又可以在锁止环25摩损后进行更换。通过本方案能够提高锁紧件的使用寿命。此外，本实施例还可以在不同的震动环境下，根据实际情况，更换锁紧垫片1与锁止环25的锁止结构，以提高或维持一定的锁止效果，提高锁紧件的应用范围。
如图5、6所示，在另一个实施例中，该可更换的锁止环25的结构还可以是：在筒体2安装锁止环25的一端，设置内凹的环形凹圈23，该环形凹圈23的外圆周为内多边形，锁止环25的外圆周为与环形凹圈23的外圆周形状对应的外多边形，当锁止环25安装在环形凹圈23内后，环形凹圈23可以通过内多边形限定锁止环25在圆周方向上的转动。本实施例的结构更方便锁止环25与筒体2的安装。
至此，本领域技术人员应认识到，虽然本文已详尽示出和描述了本发明的多个示例性实施例，但是，在不脱离本发明精神和范围的情况下，仍可根据本 发明公开的内容直接确定或推导出符合本发明原理的许多其他变型或修改。因此，本发明的范围应被理解和认定为覆盖了所有这些其他变型或修改。

Claims (10)

  1. 一种螺纹连接防松紧锁装置，包括：
    螺栓，包括带有外螺纹的螺杆；
    螺母，带有内螺纹，且与螺杆形成螺纹连接；
    锁紧件，包括带有通孔的筒体，所述通孔的轴向截面形状和尺寸与所述螺母外表面的轴向截面形状和尺寸对应，在所述筒体的一端设置有扣在所述筒体端口处的锁止环，所述锁止环的中心设置有与所述螺杆外径相同的圆孔，所述锁止环远离所述筒体的一面设置有锁止纹；
    锁紧垫片，包括在中心部位设置的与所述螺杆的外径相同的垫片孔，在所述锁紧垫片的一面设置有与所述锁止环的锁止纹接触后能够相互锁止圆周转动的防滑纹。
  2. 根据权利要求1所述的螺纹连接防松紧锁装置，其中，
    所述筒体的通孔的轴向长度，大于或等于所述螺母在轴向上的长度或其轴向长度的一半。
  3. 根据权利要求1所述的螺纹连接防松紧锁装置，其中，
    所述筒体的外表面为圆柱形，所述锁紧垫片为与所述筒体的外形对应的圆形垫片。
  4. 根据权利要求1所述的螺纹连接防松紧锁装置，其中，
    所述锁止环上的锁止纹由以所述圆孔为中心均匀分布的多个阶梯形齿台构成，所述阶梯形齿台包括由所述锁止环的表面向上延伸的斜面，和由所述斜面的顶端垂直于所述锁止环表面的断面。
  5. 根据权利要求4所述的螺纹连接防松紧锁装置，其中，
    所述锁紧垫片上的防滑纹结构与所述锁止环上的阶梯形齿台的形状对应，且斜面的升角相同，但两者的阶梯形齿台的旋转方向相反。
  6. 根据权利要求1所述的螺纹连接防松紧锁装置，其中，
    所述螺母的外表面为六角形，所述锁紧件的通孔的轴向截面形状为与所述 螺母外表面形状配合的长方形。
  7. 根据权利要求1所述的螺纹连接防松紧锁装置，其中，
    所述锁紧垫片远离所述筒体的一面，设置有提高与接触基材抓附能力的抓附纹。
  8. 根据权利要求7所述的螺纹连接防松紧锁装置，其中，
    所述抓附纹包括多个楔形齿条，所述楔形齿条由所述锁紧垫片的表面向外凸起形成，所述楔形齿条均匀分布在所述锁紧垫片的表面上，且各所述楔形齿条的轴线穿过所述锁紧垫片的圆心。
  9. 根据权利要求1所述的螺纹连接防松紧锁装置，其中，
    在所述筒体安装所述锁止环的一端设置有内凹的环形凹圈，在所述环形凹圈的内圆周上设置有间隔排列的凹槽，所述锁止环的外圆周上设置有与所述凹槽形状和尺寸对应的锁止杆，所述锁止环安装在所述环形凹圈内后，所述锁止杆分别卡入所述凹槽内。
  10. 根据权利要求1所述的螺纹连接防松紧锁装置，其中，
    在所述筒体安装所述锁止环的一端设置有内凹的环形凹圈，所述环形凹圈的外圆周为内多边形，所述锁止环的外圆周为与所述环形凹圈的内圆周形状对应的外多边形，所述锁止环安装在所述环形凹圈内后，所述环形凹圈通过内多边形限定所述锁止环在所述圆周方向上的转动。
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