Quick-release nut

Abstract

The utility model discloses a quick release nut, relates to locking piece technical field, including nut main part, outer sleeve and self-locking structure, nut main part includes first nut split part and second nut split part, first nut split part and second nut split part can be spliced to form nut main part, the first nut split part is equipped with the first part thread groove, the second part thread groove is equipped with the second part thread groove, and the first part thread groove is equipped with the second part thread groove. The first nut split body is provided with a first part thread groove, the second nut split body is provided with a second part thread groove, the first part thread groove and the second part thread groove form a thread hole of the nut main body when the first nut split body and the second nut split body are spliced, and the outer sleeve can be detachably and fixedly arranged outside the first nut split body and the second nut split body in a sleeving mode; the self-locking structure is arranged on the nut body and can allow a screw to be screwed into the nut body and prevent the screw from being screwed out of the nut body. The quick-release nut disclosed by the utility model is convenient to mount and dismount, and the service life of the quick-release nut can be effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of locking pieces, in particular to a quick-release nut. Background Art

[0002] Mechanical equipment often needs to be disassembled and assembled. Quick-release nuts are used in all fields and are more widely used than ordinary nuts. They have higher safety and resistance to shock and loosening. In traditional quick-release nuts, in high temperature environments, the nylon melts, causing the nut's self-locking function to fail. In extremely high temperatures, thermal expansion can cause thread deformation or diffusion welding, which can lock the nut and screw and make them difficult to remove. In extremely cold environments, water vapor easily condenses into ice, causing the nut to become stuck, making it difficult or laborious to remove. Traditional quick-release nuts can only be installed by gradually rotating them into place from the bottom of the screw. This not only results in a slower installation speed, but also causes more friction and wear between the nut and the screw, thereby reducing the life of the nut and the screw. Utility Model Content

[0003] The purpose of the utility model is to provide a quick-release nut to solve the problems existing in the above-mentioned prior art, facilitate installation and disassembly, and effectively extend the service life.

[0004] To achieve the above purpose, the present invention provides the following solutions:

[0005] The utility model provides a quick-release nut, including a nut body, an outer sleeve and a self-locking structure, the nut body including a first nut split and a second nut split, the first nut split and the second nut split can be assembled to form the nut body, the first nut split has a first partial thread groove, the second nut split has a second partial thread groove, the first partial thread groove and the second partial thread groove form a threaded hole of the nut body when the first nut split and the second nut split are assembled, the outer sleeve can be detachably fixedly sleeved on the outside of the first nut split and the second nut split; the self-locking structure is provided on the nut body, and the self-locking structure can allow a screw to be screwed into the nut body and prevent the screw from being screwed out of the nut body.

[0006] Preferably, a plurality of first splicing protrusions and a plurality of first splicing grooves are alternately arranged on the splicing surface of the first nut split body, and a plurality of second splicing protrusions and a plurality of second splicing grooves are alternately arranged on the splicing surface of the second nut split body. When the first nut split body and the second nut split body are spliced ​​together, each first splicing protrusion is embedded in each second splicing groove, and each second splicing protrusion is embedded in each first splicing groove.

[0007] Preferably, it also includes a first clamping member and a second clamping member, a first clamping groove is provided at one end of the nut body, and a second clamping groove is provided at the other end, the outer sleeve is sleeved between the first clamping groove and the second clamping groove on the nut body, the first clamping member is clamped in the first clamping groove, and the first clamping member can contact with one end face of the outer sleeve, the second clamping member is clamped in the second clamping groove, and the second clamping member can contact with the other end face of the outer sleeve.

[0008] Preferably, a limiting groove is provided on the outer surface of the nut body; the outer sleeve is formed by wrapping an extension sheet around the outer surface of the nut body, and the inner side surface of the outer sleeve has a connecting protrusion, which can be embedded and fixed in the limiting groove.

[0009] Preferably, it also includes a first triangular clamp and a second triangular clamp, and a first mounting hole and a second mounting hole are provided on the side surface of the outer sleeve, the first mounting hole and the second mounting hole are symmetrical about the center line of the outer sleeve, and two first clamping grooves are provided on the outer side surface of the first nut split body, and two second clamping grooves are provided on the outer side surface of the second nut split body; the first triangular clamp is used to be placed in the first mounting hole, and when the first triangular clamp is placed in the first mounting hole, one end of the first triangular clamp is embedded in one of the first clamping grooves, and the other end of the first triangular clamp is embedded in another of the first clamping grooves; the second triangular clamp is used to be placed in the second mounting hole, and when the second triangular clamp is placed in the second mounting hole, one end of the second triangular clamp is embedded in one of the second clamping grooves, and the other end of the second triangular clamp is embedded in another of the second clamping grooves.

[0010] Preferably, it further includes a first set screw and a second set screw, wherein the first set screw and the second set screw are symmetrically arranged about the center line of the outer sleeve, the first set screw can lock and fix the outer sleeve and the first nut separately, and the second set screw can lock and fix the outer sleeve and the second nut separately.

[0011] Preferably, the outer sleeve is formed by winding an extended sheet around the outer surface of the nut body.

[0012] Preferably, the cross section of the outer sleeve is a hexagonal ring; the outer sleeve is formed by stacking a plurality of outer ring sheets.

[0013] Preferably, the self-locking structure includes a nylon ring, and the nylon ring is fixedly sleeved between the nut body and the screw.

[0014] Compared with the prior art, the utility model has achieved the following technical effects:

[0015] The utility model provides a quick-release nut, wherein the nut body includes a first nut split and a second nut split. The first nut split and the second nut split can be assembled to form the nut body. The outer sleeve can be detachably fixedly sleeved on the outside of the first nut split and the second nut split to maintain the assembled state of the first nut split and the second nut split, which is convenient for installation and disassembly and can effectively extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 Schematic diagram of the initial nut diagonal splitting in the self-locking nut in Example 1;

[0018] Figure 2 Schematic diagram of the initial nut in the self-locking nut in Example 1 being split obliquely in the middle;

[0019] Figure 3 This is a schematic diagram of the initial nut splitting in the middle of the self-locking nut in Example 1;

[0020] Figure 4 Schematic diagram of the self-locking nut in Example 1;

[0021] Figure 5 for Figure 4 Schematic diagram of the outer sleeve ring;

[0022] Figure 6 This is a schematic diagram of a self-locking nut in Example 3;

[0023] Figure 7 for Figure 6 Schematic diagram of the first set screw connection;

[0024] Figure 8 This is a schematic diagram of the self-locking nut in Example 2;

[0025] Figure 9 for Figure 8 Schematic diagram of the first triangular clamp in FIG;

[0026] Figure 10 This is a schematic diagram of the first nut in the self-locking nut in Example 1;

[0027] Figure 11 Schematic diagram of the second nut split in the self-locking nut in Example 1;

[0028] Figure 12 for Figure 8 Schematic diagram of the outer sleeve in FIG;

[0029] Figure 13 This is a schematic diagram of the installation of the nylon ring in the present invention;

[0030] Figure 14 for Figure 13 Schematic diagram of nylon ring in;

[0031] Figure 15 This is a schematic diagram of the self-locking nut in Example 4;

[0032] Figure 16 This is a schematic diagram of another self-locking nut in Example 3;

[0033] Figure 17 for Figure 16 Schematic diagram of the self-locking nut in another direction;

[0034] In the figure: 1-first nut split, 2-second nut split, 3-outer sleeve, 4-first fastening screw, 5-nylon ring, 6-first triangular clamp, 7-first mounting hole, 8-outer ring piece, 9-first splicing protrusion, 10-first splicing groove, 11-first slot, 12-first clamp. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] The purpose of the utility model is to provide a quick-release nut to solve the problems existing in the above-mentioned prior art, facilitate installation and disassembly, and effectively extend the service life.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0038] Example 1

[0039] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 10 、 Figure 11 、 Figure 13 and Figure 14As shown, this embodiment provides a quick-release nut, including a nut body, an outer sleeve 3 and a self-locking structure. The nut body includes a first nut part 1 and a second nut part 2. The first nut part 1 and the second nut part 2 can be assembled to form the nut body. The first nut part 1 has a first part thread groove, and the second nut part 2 has a second part thread groove. The first part thread groove and the second part thread groove form a threaded hole of the nut body when the first nut part 1 and the second nut part 2 are assembled. The outer sleeve 3 can be detachably fixed on the outside of the first nut part 1 and the second nut part 2; the self-locking structure is provided on the nut body, and the self-locking structure can allow the screw to be screwed into the nut body and prevent the screw from being screwed out of the nut body.

[0040] The quick-release nut provided in this embodiment comprises a nut body including a first nut part 1 and a second nut part 2. The first nut part 1 and the second nut part 2 can be assembled together to form a nut body. An outer sleeve 3 can be detachably fixedly sleeved on the outside of the first nut part 1 and the second nut part 2 to maintain the assembled state of the first nut part 1 and the second nut part 2, which is convenient for installation and disassembly and can effectively extend the service life. Specifically, when disassembling the quick-release nut provided in this embodiment, the outer sleeve 3 is first removed. After the outer sleeve 3 is removed, the nut body will split from the assembled part to separate the first nut part 1 and the second nut part 2. The two nut parts 2 can realize the quick disassembly of the nut, which can greatly reduce the time of removing the nut, improve work efficiency, and be efficient and convenient. When installing the quick-release nut provided by this embodiment, the first nut part 1 and the second nut part 2 can be directly assembled on both sides of the screw to form the nut body, without gradually rotating it into place from the bottom of the screw, which effectively improves the installation speed, has high durability and wear resistance, reduces invalid friction when tightening forward or unscrewing the thread in the reverse direction, and only installs or removes at the position to be tightened, reducing the friction and wear between the nut and the screw, and can effectively extend the service life. , which can maintain a tightened state for a long time; the quick-release nut provided in this embodiment has a self-locking function, which can prevent loosening under long-term vibration and impact, thereby effectively preventing safety hazards caused by loosening of fasteners, significantly improving the anti-loosening performance and shockproof function of the nut. By changing the structure of the nut, quick release, quick installation and self-locking are combined into one, thus realizing the multifunctionality of the nut, significantly reducing the production cost per unit product and the time cost of removing the nut. Since the quick-release nut provided in this embodiment has a self-locking function, it can reduce maintenance costs. Traditional nuts require regular inspection and tightening to ensure that they are not loose or falling off. However, after adopting the quick-release nut provided in this embodiment, engineers can reduce the working time of daily inspections, thereby reducing maintenance costs and saving time. The quick-release nut provided in this embodiment has a self-locking function and has high strength and can withstand large tension and pressure, which is suitable for high-load application scenarios. The self-locking method of the quick-release nut provided in this embodiment will damage the screw, but the nut body is intact and can be reinstalled after disassembly, reducing maintenance costs. The quick-release nut provided in this embodiment is simple to install and easy to operate because of its quick release function, and does not require special tools and skills. The quick-release nut provided in this embodiment can be used in all fields. Compared with traditional nuts, it has a wider application range and has higher safety and anti-vibration and anti-loosening properties.For example, in the fields of aviation and aerospace, the quick-release nuts provided in this embodiment can be used in the manufacture and maintenance of high-precision, high-reliability equipment such as aircraft and rockets to ensure the stability and safety of the equipment; in the automotive field, in automobile maintenance, the quick-release nuts provided in this embodiment can be used for operations such as tire replacement, transmission disassembly and maintenance, and even in various competitions, maintenance station personnel can replace spare parts more quickly; in the field of industrial equipment maintenance, the quick-release nuts provided in this embodiment can be used for the loading, unloading and replacement of various fasteners; in the field of building structures, the quick-release nuts provided in this embodiment can be applied to fasteners such as various steel structures, pipelines, bridges and flood control projects. In future architectural designs, the quick-release nuts provided in this embodiment can be used for fastening in modular house buildings; in the medical and other fields, the quick-release nut products made of specific materials provided in this embodiment can be used for fixing human fractures, and because of the quick-release function, the pain of patients during the removal process and the time for medical staff to remove the nuts can be reduced. In the chemical industry, the quick-release nut provided in this embodiment can be used to fasten various equipment and pipelines in chemical reaction devices to ensure sealing and stability. In the military field, since the quick-release nut provided in this embodiment has a self-locking function, it can be widely used in the assembly and maintenance of various military equipment, and can be more widely used in heavy equipment such as aircraft, rockets, tanks, armored vehicles and military vehicles that are subject to large impacts and vibrations. It is more convenient to use in some special environments. For example, in a cold environment, water vapor easily condenses into ice, causing the nut to get stuck. In a high temperature environment, thermal expansion can cause thread deformation or diffusion welding, thereby locking the screw and nut. In a highly corrosive environment, it is necessary to minimize the contact time between the human body and the nut. In the face of these situations, the quick-release function of the quick-release nut provided in this embodiment is needed, which is easier to remove, convenient, fast and efficient. In addition, the quick-release nut provided in this embodiment can be used in daily life, such as repairing car tires, bicycles or automatic vehicle wheels, repairing electrical appliances, disassembling and assembling furniture, and repairing plumbing facilities. In short, the quick-release nut provided in this embodiment can be applied to disposable or reusable articles in the medical, chemical, thermal, automotive, railway, aviation, aerospace, shipbuilding, electronic equipment, molds, military, cold environments, and daily life, etc. It has strong applicability and a wide range of uses. The quick-release nut provided in this embodiment is a nut that can be self-locking and quickly disassembled and installed, and can be widely used in all fields. In summary, the quick-release nut provided in this embodiment has the advantages of quick disassembly, quick disassembly and quick installation, self-locking integration, a wide range of applications, high durability, reduced maintenance costs, multiple options, reusability, easy installation, stronger self-locking effect at high temperatures, and easy disassembly, and is a very excellent fastener.In addition, the quick-release nut provided in this embodiment has a simple structure, a mature manufacturing process, requires less materials and is easy to produce automatically. It can be manufactured in large sizes such as M3, M4, M5, M6 and even M100, M300, but is not limited to it. It has a wide range of sizes that can be manufactured.

[0041] In this embodiment, the first nut part 1 and the second nut part 2 can be manufactured as follows: first, the initial nut is manufactured, and then the initial nut is cut into two halves using wire cutting, one half being the first nut part 1 and the other half being the second nut part 2. In order to maximize the strength, plasticity, toughness and manufacturing cost of the first nut part 1 and the second nut part 2 while ensuring the sharpness of the thread crest, stainless steel is preferably used as the raw material, and then the thread crest is quenched and high-temperature tempered. The initial nut is divided into three splitting methods, namely diagonal splitting, middle straight splitting and middle oblique splitting. It should be noted that the material used to make the initial nut can be the same as the nut material on the market.

[0042] Diagonal splitting: Figure 1 As shown, the initial nut is split at the diagonal part. The advantage of splitting at the diagonal part is that the thickness at the diagonal part is larger, which can maintain the strength, bearing capacity, torque and stability of the first nut part 1 and the second nut part 2;

[0043] Middle oblique split: Figure 2 As shown, it refers to splitting at a certain angle at the thinnest part of the initial nut. The oblique splitting in the middle can effectively change the top of the thread at the crack of the initial nut from a right-angle thread to an acute-angle thread, which increases the sharpness of the thread in disguise. After such processing, the change in the angle of the thread allows the thread opening of the nut to better penetrate the screw, increasing the self-locking effect of the nut.

[0044] Splitting in the middle: Figure 3 As shown, vertical splitting is performed at the thinnest part of the initial nut. The advantage of splitting in the middle is that the processed thread in the middle is straight, not inclined, which makes it easier to quench and high-temperature temper the thread.

[0045] Furthermore, a plurality of first splicing protrusions 9 and a plurality of first splicing grooves 10 are alternately arranged on the splicing surface of the first nut body 1, and a plurality of second splicing protrusions and a plurality of second splicing grooves are alternately arranged on the splicing surface of the second nut body 2. When the first nut body 1 and the second nut body 2 are spliced ​​together, each first splicing protrusion 9 is embedded in each second splicing groove, and each second splicing protrusion is embedded in each first splicing groove 10. As a more preferred embodiment of this embodiment, the cross-sections of the first splicing protrusion 9 and the second splicing protrusion are both rectangular, with a large contact area, which can more effectively prevent the axial movement of the nut body and also allow the nut body to be radially staggered, thus preparing conditions for self-locking and making it possible to separate the nut body from the splicing point for quick removal. As an optional embodiment of this embodiment, the cross-sections of the first splicing protrusion 9 and the second splicing protrusion can also be trapezoidal, triangular, serrated or circular arc.

[0046] Furthermore, the quick-release nut provided in this embodiment further includes a first clamping member 12 and a second clamping member. A first clamping slot 11 is provided at one end of the nut body, and a second clamping slot is provided at the other end. The outer sleeve 3 is sleeved between the first clamping slot 11 and the second clamping slot on the nut body. The first clamping member 12 is clamped into the first clamping slot 11 and can contact one end surface of the outer sleeve 3. The second clamping member is clamped into the second clamping slot and can contact the other end surface of the outer sleeve 3. The outer sleeve 3 is limited by the first clamping member 12 and the second clamping member to prevent the outer sleeve 3 from falling off, thereby preventing the nut body from cracking when installed on the screw.

[0047] Furthermore, the cross section of the outer sleeve 3 is a hexagonal ring, which can be consistent with the profile of the nut body and save materials.

[0048] Furthermore, the outer sleeve 3 is formed by stacking a plurality of outer ring sheets 8, which is convenient for installation and use.

[0049] Furthermore, the self-locking structure includes a nylon ring 5, which is fixedly sleeved between the nut body and the screw. The nylon ring 5 is made of nylon and is a standard part. The self-locking principle is that when the screw is screwed into the nut body, the inner diameter of the nylon ring 5 is smaller than the inner diameter of the nut, which forces the nut body and the screw to squeeze the nylon ring 5, causing the nylon ring 5 to be squeezed into the thread by the screw. In this way, the screw thread, the nylon ring 5 and the thread of the nut body are squeezed together, increasing the friction between the nut body and the screw. When the screw is to be unscrewed from the nut body, the nylon ring 5 has been crushed and squeezed into the thread, which makes it impossible for the screw to be unscrewed from the nut body, thus forming a self-locking structure.

[0050] Example 2

[0051] like Figure 8 、 Figure 9 and Figure 12 As shown, the quick-release nut provided in this embodiment is different from that in the first embodiment only in the structure for limiting the outer sleeve 3. The quick-release nut provided in this embodiment also includes a first triangular clamp 6 and a second triangular clamp. A first mounting hole 7 and a second mounting hole are provided on the side surface of the outer sleeve 3. The first mounting hole 7 and the second mounting hole are symmetrical about the center line of the outer sleeve 3. Two first clamping grooves 11 are provided on the outer surface of the first nut split body 1, and two second clamping grooves are provided on the outer surface of the second nut split body 2; the first triangular clamp 6 is used to be placed in the first mounting hole 7. When the first triangular clamp 6 is placed in the first mounting hole 7, one end of the first triangular clamp 6 is embedded in one first clamping groove 11, and the other end of the first triangular clamp 6 is embedded in the other first clamping groove 1 ... The two triangular clamps are used to be placed in the second mounting hole. When the second triangular clamp is placed in the second mounting hole, one end of the second triangular clamp is embedded in a second slot, and the other end of the second triangular clamp is embedded in another second slot. The first triangular clamp 6 and the second triangular clamp are symmetrically clamped to improve the mechanical strength of the overall structure and make the stress distribution of the parts more uniform, thereby reducing the problems of stress concentration and mechanical fatigue, effectively preventing the outer sleeve 3 from falling and extending the service life. The first triangular clamp 6 and the second triangular clamp are countersunk to facilitate installation by workers. It is preferred that removal openings are reserved at the first mounting hole 7 and the second mounting hole on the outer sleeve 3 to facilitate the removal of the first triangular clamp 6 and the second triangular clamp using tools such as screwdrivers.

[0052] Example 3

[0053] like Figure 6-Figure 7 As shown, the quick-release nut provided in this embodiment is different from that in the first embodiment in that it only has a structure for limiting the outer sleeve 3. The quick-release nut provided in this embodiment also includes a first set screw 4 and a second set screw. The first set screw 4 and the second set screw are symmetrically arranged about the center line of the outer sleeve 3. The first set screw 4 can lock and fix the outer sleeve 3 and the first nut split 1, and the second set screw can lock and fix the outer sleeve 3 and the second nut split 2. The first set screw 4 and the second set screw can be, but are not limited to, set screws such as flat-blade, cross, head with holes or hexagonal flange surfaces. The structure in which the first set screw 4 and the second set screw are symmetrically tightened improves the mechanical strength of the overall structure, makes the stress distribution on the parts more uniform, thereby reducing the problems of stress concentration and mechanical fatigue, effectively preventing the outer sleeve 3 from falling and extending the service life.

[0054] like Figure 16-17As shown, further, the outer sleeve 3 is formed by winding an extension sheet around the outer surface of the nut body. When disassembling, use a screwdriver or other sharp objects to pry up the outermost extension sheet, and untie the extension sheet from the outer surface of the nut body, so that the first nut part 1 and the second nut part 2 can be separated and fall off; it should be noted here that there is no specific restriction on the number of layers or turns of the extension sheet wrapped around the outer side surface of the nut body, and one or more layers can be used. The extension sheet is made of a material with consistent thickness and good flexibility and tensile resistance. It is preferred to use nickel, nickel-containing, chromium alloy, stainless steel sheet, carbon steel sheet or copper and other materials to cover the first nut part 1 and the second nut part 2 and fit them tightly.

[0055] Example 4

[0056] like Figure 15 As shown, the quick-release nut provided by this embodiment is different from that of the third embodiment only in the structure for limiting the outer sleeve 3. In the quick-release nut provided by this embodiment, a limiting groove is provided on the outer side of the nut body; the outer sleeve 3 is formed by winding an extension piece around the outer side of the nut body, and a connecting protrusion is provided on the inner side of the outer sleeve 3, which can be embedded and fixed in the limiting groove. It can be, but is not limited to, stamping from the outside to the inside to press part of the structure on the side of the outer sleeve 3 into the limiting groove to form a connecting protrusion, and the connecting protrusion is tightened and fixed to the limiting groove. During assembly, the extension piece is wound around the outer side of the nut body to form the outer sleeve 3, and then part of the structure on the side of the outer sleeve 3 is tightened and fixed. The sub-structure can be pressed into the limiting groove. When disassembling, use a screwdriver or other sharp objects to pry up the outermost extension sheet and remove the extension sheet from the outer side of the nut body to separate and fall off the first nut sub-body 1 and the second nut sub-body 2. It should be noted here that there is no specific restriction on the shape of the limiting groove, and any shape can be used. There is no specific restriction on the number of layers or turns of the extension sheet wrapped around the outer side of the nut body, and one or more layers can be used. The extension sheet is made of a material with consistent thickness and good flexibility and tensile resistance. It is preferred to use nickel, nickel-containing, chromium alloy, stainless steel sheet, carbon steel sheet or copper and other materials to cover the first nut sub-body 1 and the second nut sub-body 2 and fit them tightly.

[0057] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A quick-release nut, characterized in that: It includes a nut body, an outer sleeve and a self-locking structure, the nut body includes a first nut split and a second nut split, the first nut split and the second nut split can be assembled to form the nut body, the first nut split has a first part of the thread groove, the second nut split has a second part of the thread groove, the first part of the thread groove and the second part of the thread groove form a threaded hole of the nut body when the first nut split and the second nut split are assembled, the outer sleeve can be detachably fixedly sleeved on the outside of the first nut split and the second nut split; the self-locking structure is provided on the nut body, the self-locking structure can allow the screw to be screwed into the nut body and prevent the screw from being screwed out of the nut body; the self-locking structure includes a nylon ring, and the nylon ring is fixedly sleeved between the nut body and the screw.

2. The quick-release nut according to claim 1, characterized in that: A plurality of first splicing protrusions and a plurality of first splicing grooves are alternately arranged on the splicing surface of the first nut split body, and a plurality of second splicing protrusions and a plurality of second splicing grooves are alternately arranged on the splicing surface of the second nut split body. When the first nut split body and the second nut split body are spliced ​​together, each first splicing protrusion is embedded in each second splicing groove, and each second splicing protrusion is embedded in each first splicing groove.

3. The quick-release nut according to claim 1, characterized in that: It also includes a first clamping member and a second clamping member. A first clamping groove is provided at one end of the nut body, and a second clamping groove is provided at the other end. The outer sleeve is sleeved between the first clamping groove and the second clamping groove on the nut body. The first clamping member is clamped in the first clamping groove, and the first clamping member can contact one end face of the outer sleeve. The second clamping member is clamped in the second clamping groove, and the second clamping member can contact the other end face of the outer sleeve.

4. The quick-release nut according to claim 1, characterized in that: A limiting groove is provided on the outer surface of the nut body; the outer sleeve is formed by winding an extension sheet around the outer surface of the nut body, and the inner side surface of the outer sleeve has a connecting protrusion, which can be embedded and fixed in the limiting groove.

5. The quick-release nut according to claim 1, characterized in that: It also includes a first triangular clamp and a second triangular clamp, a first mounting hole and a second mounting hole are provided on the side surface of the outer sleeve, the first mounting hole and the second mounting hole are symmetrical about the center line of the outer sleeve, two first clamping grooves are provided on the outer side surface of the first nut split body, and two second clamping grooves are provided on the outer side surface of the second nut split body; the first triangular clamp is used to be placed in the first mounting hole, when the first triangular clamp is placed in the first mounting hole, one end of the first triangular clamp is embedded in one of the first clamping grooves, and the other end of the first triangular clamp is embedded in the other first clamping groove; the second triangular clamp is used to be placed in the second mounting hole, when the second triangular clamp is placed in the second mounting hole, one end of the second triangular clamp is embedded in one of the second clamping grooves, and the other end of the second triangular clamp is embedded in the other second clamping groove.

6. The quick-release nut according to claim 1, characterized in that: It also includes a first set screw and a second set screw, the first set screw and the second set screw are symmetrically arranged about the center line of the outer sleeve, the first set screw can lock and fix the outer sleeve and the first nut separately, and the second set screw can lock and fix the outer sleeve and the second nut separately.

7. The quick-release nut according to claim 6, characterized in that: The outer sleeve is formed by winding an extended sheet around the outer surface of the nut body.

8. The quick-release nut according to claim 1, characterized in that: The cross section of the outer sleeve is a hexagonal ring; the outer sleeve is formed by stacking a plurality of outer ring sheets.

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