High-strength nut and production process thereof

Abstract

The application relates to the field of nuts, in particular to a high-strength nut and a production process thereof, which comprises a cap body and a compression sealing ring, the cap body is provided with a threaded hole, a sealing groove is formed in the inner wall of the threaded hole, a compression assembly is connected to the cap body, a compression cavity is formed in the inner wall of the sealing groove, the compression assembly comprises a compression rod and a compression elastic piece, one end of the compression elastic piece in the elastic force direction is connected to the inner wall of the compression cavity, the other end of the compression elastic piece in the elastic force direction is connected to the end of the compression rod, and the end face of the compression rod away from the compression elastic piece abuts against the outer ring wall of the compression sealing ring. In the application, the compression sealing ring, the compression rod and the compression elastic piece are arranged, the cap body is not easy to be loosened from the screw rod under the condition of vibration, a gasket does not need to be additionally arranged between the cap body and the article to be fixed, the assembly steps of two articles are reduced, the work burden of the staff is reduced, and the work efficiency of the staff is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of nuts, in particular to a high-strength nut and a production process thereof. BACKGROUND

[0002] The nut is also called a nut, and there are various types of nuts, including hexagonal nuts, round nuts, and square nuts. The nut is screwed together with the bolt or screw rod through the inner thread to tightly connect two articles, and is widely used in various equipment such as machinery, furniture, vehicles, or lamps.

[0003] When the two articles fixed by the nut and the screw rod are in a vibration condition, such as a vehicle in motion, a mechanical equipment in operation, etc., the nut is unexpectedly loosened by the locking force between the article vibration and the screw rod, which causes the two articles to be not easily in a firm connection state, thereby causing the equipment to be unable to operate normally.

[0004] In order to prevent the nut and the screw rod from being loosened, a gasket is often added between the nut and the article to be fixed, thereby increasing the locking force between the nut and the screw rod, but increasing the assembly steps of the two articles, increasing the work burden of the workers, and causing the work efficiency of the workers to be reduced. SUMMARY

[0005] In order to improve the problem that the nut is loosened from the screw rod by the article vibration, the present application provides a high-strength nut and a production process thereof.

[0006] In a first aspect, the present application provides a high-strength nut, which adopts the following technical scheme:

[0007] A high-strength nut, comprising a nut body and a compression sealing ring, the nut body has a threaded hole for threaded connection with a screw rod, a sealing groove is formed in the inner wall of the threaded hole, the sealing groove is used for embedding the compression sealing ring, the inner ring wall of the compression sealing ring is used for abutting against the outer wall of the screw rod to form a fixation, the nut body is connected with a compression assembly, a compression cavity is formed in the inner wall of the sealing groove, the compression assembly comprises a compression rod and a compression elastic member, one end of the compression elastic member in the elastic force direction is connected to the inner wall of the compression cavity, the other end of the compression elastic member in the elastic force direction is connected to the end of the compression rod, the end face of the compression rod away from the compression elastic member abuts against the outer ring wall of the compression sealing ring, the compression elastic member has an elastic force to drive the compression rod to slide towards the sealing groove, and the compression rod has a tendency to drive the compression sealing ring to deform towards the threaded hole.

[0008] By adopting the technical scheme, the cap body is threadedly connected to the outer wall of the screw rod through the threaded hole, thereby preliminarily fixing the cap body and the screw rod, and the compression rod is driven to slide towards the sealing groove by the elastic force of the compression elastic member, the end surface of the compression rod away from the compression elastic member abuts against the outer ring wall of the compression sealing ring, the compression rod drives the compression sealing ring to deform towards the threaded hole, the inner ring wall of the compression sealing ring abuts against the outer wall of the screw rod to be fixed, the locking force between the cap body and the screw rod is increased, the cap body is not easy to be loosened from the screw rod under the condition of vibration, a gasket does not need to be additionally arranged between the cap body and the article to be fixed, the assembly steps of the two articles are reduced, the work burden of the worker is reduced, and the work efficiency of the worker is improved.

[0009] Optionally, the compression assembly further comprises a compression rack and a compression gear, the compression cavity penetrates through the outer wall of the cap body in a direction away from the cap body axis, the compression rack is slidingly connected to the inner wall of the compression cavity, the sliding direction of the compression rack and the sliding direction of the compression rod are parallel to each other, and the end portion of the compression rack protrudes out of the outer wall of the cap body, the compression gear is rotationally connected to the inner wall of the compression cavity, the compression gear is located between the compression rod and the compression rack, the compression rack meshes with the compression gear, and the end surface of the compression rod is provided with a meshing tooth groove meshing with the compression gear.

[0010] By adopting the technical scheme, when the cap body is installed, the worker holds the outer wall of the cap body, the fingers abut against the end portion of the compression rack and drive the compression rack to slide towards the cap body axis, the compression gear rotates, the end surface of the compression rod is provided with the meshing tooth groove meshing with the compression gear, the compression rod slides away from the cap body axis, the abutting force of the compression rod on the compression sealing ring disappears, the compression sealing ring elastically deforms and is embedded in the sealing groove, the compression sealing ring is reset, the cap body is more smoothly screwed and fixed to the outer wall of the screw rod through the threaded hole, when the end surface of the cap body abuts against the end surface of the article to be fixed, the worker releases the cap body, the pressure on the compression rack disappears, the abutting elastic member drives the abutting rod to slide towards the sealing groove, the end surface of the abutting rod abuts against the outer ring wall of the compression sealing ring and drives the compression sealing ring to deform towards the threaded hole and abut against the outer wall of the valve rod, thereby improving the locking force between the cap body and the screw rod.

[0011] Optionally, the end surface of the compression rack protruding out of the cap body is provided with a buffer surface, and the buffer surface is in a circular arc protruding shape.

[0012] By adopting the technical scheme, the buffer surface is located at the end surface of the compression rack protruding out of the cap body, when the worker holds the outer wall of the cap body, the fingers press the buffer surface and guide the compression rack to slide towards the cap body axis, and the end surface of the compression rack is flush with the end surface of the cap body, thereby facilitating the worker to move the compression rack.

[0013] Optionally, the compression cavity penetrates through the outer wall of the cap body along the cap body axis direction, a sealing block is connected to the cap body, the compression rack, the compression gear, the compression elastic member and the compression rod are sequentially embedded into the compression cavity, the sealing block is embedded into the compression cavity, the circumferential outer wall of the sealing block is tightly abutted against the inner wall of the compression cavity to form fixation, and the end surface of the sealing block is flush with the end surface of the cap body.

[0014] By adopting the above technical scheme, when the compression assembly is assembled, the compression rack, the compression gear, the compression elastic member and the compression rod are sequentially embedded into the compression cavity to realize the assembly of the compression assembly on the inner wall of the compression cavity, at the same time, the sealing block is embedded into the compression cavity, the circumferential outer wall of the sealing block is tightly abutted against the inner wall of the compression cavity to form fixation, and the end surface of the sealing block is flush with the end surface of the cap body, so that the compression assembly is not easy to be separated from the compression cavity, thereby improving the stability of the operation of the compression assembly.

[0015] Optionally, a one-way assembly is connected to the cap body, a one-way cavity is formed in the inner wall of the threaded hole, the one-way assembly comprises a one-way arc plate and a one-way ball, the one-way arc plate is connected to the inner wall of the one-way cavity, the length direction of the one-way arc plate comprises a limiting end and a rolling end, the distance from the limiting end to the cap body axis is less than the distance from the rolling end to the cap body axis, the one-way ball is slidingly connected to the inner wall of the one-way cavity, one end of the one-way ball abuts against the end surface of the one-way arc plate, and the other end of the one-way ball is used to abut against the outer wall of the screw rod, when the cap body is tightly fixed on the outer wall of the screw rod, the outer wall of the screw rod abuts against the end surface of the one-way ball and guides the one-way ball to slide along the arc surface of the one-way arc plate towards the direction close to the rolling end, and the end surface of the one-way ball is in rolling contact with the outer wall of the screw rod.

[0016] By adopting the above technical scheme, the cap body is threadedly and tightly fixed on the outer wall of the screw rod, one end of the one-way ball abuts against the arc surface of the one-way arc plate, the other end of the one-way ball abuts against the outer wall of the screw rod, the screw rod drives the one-way ball to slide along the arc surface of the one-way arc plate towards the direction close to the rolling end, the one-way ball is located at the rolling end, and the end surface of the one-way ball is in rolling contact with the outer wall of the screw rod; when the cap body on the screw rod is loosened and reversely rotated, the screw rod drives the one-way ball to slide along the arc surface of the one-way arc plate towards the direction close to the limiting end, the distance from the limiting end to the cap body axis is less than the distance from the rolling end to the cap body axis, the space position of the one-way ball in the one-way cavity is reduced, one end of the one-way ball is tightly abutted against the arc surface of the one-way arc plate to form fixation, the other end of the one-way ball is tightly abutted against the outer wall of the screw rod to form fixation, so that the cap body is not easy to rotate on the outer wall of the screw rod, thereby improving the locking force between the cap body and the screw rod.

[0017] Optionally, the rolling end of the one-way arc plate is rotationally connected to the inner wall of the one-way cavity, and the rotation axis of the one-way arc plate is parallel to the axis of the cap body; the one-way assembly further comprises a one-way elastic member, one end of the elastic force direction of the one-way elastic member is connected to the inner wall of the one-way cavity, the other end of the elastic force direction of the one-way elastic member is connected to the rolling end of the one-way arc plate, the one-way elastic member has elastic force to drive the one-way arc plate to rotate, and the limiting end of the one-way arc plate tends to tilt towards the direction close to the axis of the cap body.

[0018] By adopting the above technical solution, the rolling end of the one-way arc plate is rotationally connected to the inner wall of the one-way cavity, one end of the elastic force direction of the one-way elastic member is connected to the inner wall of the one-way cavity, the other end of the elastic force direction of the one-way elastic member is connected to the rolling end of the one-way arc plate, the one-way elastic member has elastic force to drive the one-way arc plate to rotate, and the limiting end of the one-way arc plate tends to tilt towards the direction close to the axis of the cap body, the arc surface of the one-way arc plate is not easy to separate from the one-way ball raceway, thereby improving the stability of the one-way arc plate guiding the one-way ball to slide in the inner wall of the guide cavity.

[0019] Optionally, the one-way assembly further comprises a limiting ball and a one-way rod, one end of the one-way rod is connected to the end face of the one-way ball, the other end of the one-way rod is connected to the end face of the limiting ball, the inner wall of the one-way cavity is provided with a sliding arc groove, the center line of the sliding arc groove coincides with the axis of the cap body, and the limiting ball is slidingly connected to the inner wall of the sliding arc groove to drive the one-way ball to slide along the arc surface of the one-way arc plate in the inner wall of the one-way cavity.

[0020] By adopting the above technical solution, one end of the one-way rod is connected to the limiting ball, the other end of the one-way rod is connected to the one-way ball, and the limiting ball is embedded in the sliding arc groove, so that the one-way ball is not easy to separate from the one-way cavity, thereby improving the stability of the one-way ball sliding in the inner wall of the one-way cavity; at the same time, the center line of the sliding arc groove coincides with the axis of the cap body, so that the one-way ball is not easy to deviate when sliding in the inner wall of the one-way cavity, further improving the stability of the one-way ball sliding in the inner wall of the one-way cavity.

[0021] Optionally, the bottom wall of the one-way cavity is provided with an air channel, the air channel communicates with the compression cavity, the air channel is located at the slot opening of the compression cavity and faces the end portion of the compression rack, and the one-way assembly further comprises a driving plate, the driving plate is slidingly connected to the inner wall of the air channel, and the limiting end of the one-way arc plate abuts against the end face of the driving plate; when the compression rack slides towards the direction close to the axis of the cap body, the air in the compression cavity enters the air channel, the air pressure in the air channel increases, the driving plate slides towards the direction close to the one-way cavity, and the driving plate drives the limiting end of the one-way arc plate to rotate away from the axis of the cap body.

[0022] When the staff needs to detach the cap body from the screw rod, the staff holds the outer wall of the cap body, the fingers drive the compression rack to slide towards the direction close to the axis of the groove body, the compression rack drives the air in the compression cavity into the air channel, the air pressure in the air channel increases, the driving plate slides towards the direction close to the one-way cavity, the end surface of the driving plate abuts against the limiting end surface of the one-way arc plate, and the limiting end of the one-way arc plate is driven to rotate away from the axis of the cap body, the distance between the limiting end of the one-way arc plate and the axis of the cap body is equal to the distance between the rolling end of the one-way arc plate and the axis of the cap body, when the cap body is rotated from the outer wall of the screw rod, the outer wall of the screw rod abuts against the end surface of the one-way ball, and the one-way ball slides along the arc surface of the one-way arc plate towards the direction close to the limiting end, when the one-way ball is located at the limiting end of the arc surface of the one-way arc plate, the end surface of the one-way ball is in rolling contact with the outer wall of the screw rod, and the cap body is easily detached from the outer wall of the screw rod.

[0023] Optionally, the end surface of the driving plate abutting against the one-way arc plate is provided with a guide surface, and the inclination height of the guide surface increases with the distance to the axis of the cap body.

[0024] By adopting the above technical scheme, when the air pressure in the air channel drives the driving plate to slide towards the direction close to the one-way cavity, the end surface of the one-way arc plate abuts against the guide surface, the guide surface guides the limiting end of the one-way arc plate to rotate away from the axis of the cap body, thereby improving the stability of the driving plate driving the one-way arc plate to rotate.

[0025] In a second aspect, the application provides a high-strength nut production process, which adopts the following technical scheme:

[0026] A high-strength nut production process for producing high-strength nuts includes the following steps:

[0027] Material cutting, cutting a steel pipe to form a plurality of small steel ingots;

[0028] Nut rough forming, heating and softening the small steel ingots, and pressing and forming to form a nut rough, and processing and forming a slot in the nut rough to form a compression cavity and a sealing groove;

[0029] Compression assembly installation, sequentially embedding the compression rack, the compression gear, the compression elastic member and the compression rod into the compression cavity, embedding the sealing block into the compression cavity, abutting and fixing the outer wall of the sealing block against the inner wall of the compression cavity, and making the end surface of the sealing block flush with the end surface of the nut rough, and welding and fixing the connection between the sealing block and the inner wall of the compression cavity to realize the installation of the compression assembly on the nut rough

[0030] Nut rough polishing, polishing the nut rough after cooling;

[0031] Nut tapping forming, quenching the nut rough to increase the hardness, and tapping the inner wall of the nut rough to form a high-strength nut.

[0032] By adopting the technical scheme, the nut blank is quenched, the hardness value of the high-strength nut is improved, the high-strength nut is not prone to delay fracture and fatigue fracture, and thus the service life of the high-strength nut is improved; meanwhile, the installation of the compression assembly on the high-strength nut is realized in the production process of the high-strength nut, no external gasket is needed, the locking force between the nut and the screw rod is increased, and thus the assembly steps of the nut are reduced, the work burden of the workers is reduced, and the work efficiency of the workers is improved.

[0033] In summary, the present application has at least one of the following beneficial technical effects:

[0034] 1. The compression sealing ring, compression rod and compression elastic piece are arranged, the cap body is not prone to loosening from the screw rod under vibration conditions, no gasket needs to be additionally arranged between the cap body and the object to be fixed, the assembly steps of the two objects are reduced, the work burden of the workers is reduced, and thus the work efficiency of the workers is improved;

[0035] 2. The compression gear and compression rack are arranged, the compression sealing ring is deformed towards the direction close to the threaded hole and abuts against the outer wall of the valve rod, and thus the locking force between the cap body and the screw rod is improved;

[0036] 3. The one-way arc plate and one-way ball are arranged, one end of the one-way ball abuts against the arc surface of the one-way arc plate to form fixation, the other end of the one-way ball abuts against the outer wall of the screw rod to form fixation, the cap body is not prone to rotating on the outer wall of the screw rod, and thus the locking force between the cap body and the screw rod is improved. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0038] Figure 2 is a sectional view of the embodiment of the present application, mainly showing the compression assembly.

[0039] Figure 3 is a schematic diagram of the overall structure of the compression assembly of the embodiment of the present application.

[0040] Figure 4 is a schematic diagram of the overall structure of the sliding part in the embodiment of the present application.

[0041] Figure 5 is an exploded view of the embodiment of the present application, mainly showing the one-way assembly.

[0042] Explanation of reference numerals in the attached drawings: 1. Cap body; 11. Threaded hole; 12. Sealing groove; 13. Cover part; 14. Sliding part; 141. Air passage; 15. Limiting part; 16. Threaded part; 17. Pressing chamber; 18. One-way chamber; 19. Sliding arc groove; 2. Pressing sealing ring; 3. Pressing assembly; 31. Pressing rod; 311. Drive part; 312. Extrusion part; 313. Meshing tooth groove; 32. Pressing elastic element; 33. Pressing rack; 331. Buffer surface; 34. Pressing gear; 4. Sealing block; 5. One-way assembly; 51. One-way ball; 52. One-way arc plate; 521. Limiting end; 522. Rolling end; 53. One-way elastic element; 54. Limiting ball; 55. One-way rod; 56. Drive plate; 561. Sealing part; 562. Guide part; 5621. Guide surface. Detailed Implementation

[0043] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0044] This application discloses a high-strength nut. (Refer to...) Figure 1 A high-strength nut includes a nut body 1 and a compression sealing ring 2. The nut body 1 has a threaded hole 11 coaxially formed for threaded connection with a screw. A sealing groove 12 is coaxially formed on the inner wall of the threaded hole 11. In this embodiment, the sealing groove 12 is an annular groove. The sealing groove 12 is used for embedding the compression sealing ring 2. The material of the compression sealing ring 2 can be rubber or silicone. In this embodiment, the material of the compression sealing ring 2 is rubber, which has a certain deformation capacity. The compression sealing ring 2 is coaxially embedded in the sealing groove 12. The outer ring wall of the compression sealing ring 2 abuts against the inner wall of the sealing groove 12 to form a fixation. The inner ring wall of the compression sealing ring 2 abuts against the outer wall of the screw to form a fixation, making it less likely for the nut body 1 to rotate on the outer wall of the screw under vibration conditions, thereby increasing the locking force between the nut body 1 and the screw.

[0045] Reference Figure 1 The cap body 1 includes a cover portion 13, a sliding portion 14, a limiting portion 15, and a threaded portion 16. In this embodiment, the cover portion 13, the sliding portion 14, and the limiting portion 15 are all cylinders, and the threaded portion 16 is a polygonal cylinder. The diameters of the cover portion 13, the sliding portion 14, and the limiting portion 15 are all equal and larger than the inner diameter of the threaded portion 16. The cover portion 13, the sliding portion 14, the limiting portion 15, and the threaded portion 16 are sequentially and coaxially welded together to form the cap body 1.

[0046] Reference Figure 2 Two clamping components 3 are connected to the cap body 1. The clamping components 3 are used to drive the clamping sealing ring 2 to press against the outer wall of the screw. The sealing groove 12 is located on the threaded part 16. Two clamping chambers 17 are evenly spaced on the end face of the sealing groove 12 away from the axis of the cap body 1. The two clamping chambers 17 are evenly distributed around the axis of the cap body 1.

[0047] With reference to Figure 2 And Figure 3 , the pressing assembly 3 and the pressing cavity 17 correspond one by one, the pressing assembly 3 comprises a pressing rod 31, a pressing elastic piece 32, a pressing rack 33 and a pressing gear 34, the pressing cavity 17 penetrates the outer wall of the threaded portion 16 in the direction away from the limiting portion 15, and the pressing cavity 17 penetrates the outer wall of the threaded portion 16 in the direction away from the axis of the cap body 1. The pressing rod 31 comprises a driving portion 311 and a pressing portion 312, the pressing portion 312 is an arc-shaped plate in the embodiment of the application, the driving portion 311 is a strip-shaped rod, one end of the driving portion 311 in the length direction is welded and fixed on the outer peripheral wall of the pressing portion 312, and the inner wall of the pressing portion 312 away from the driving portion 311 is used for abutting against and driving the deformation of the pressing sealing ring 2.

[0048] With reference to Figure 2 And Figure 3 , the pressing rod 31 is slidably connected to the inner wall of the pressing cavity 17, the sliding direction of the pressing rod 31 is perpendicular to the axis of the cap body 1, and the end face of the pressing portion 312 away from the driving portion 311 abuts against the outer ring wall of the pressing sealing ring 2. The pressing elastic piece 32 can be a compression spring or a torsion spring, and the pressing elastic piece 32 is a compression spring in the embodiment of the application and has a certain deformation capacity. One end of the pressing elastic piece 32 in the elastic force direction is welded and fixed on the inner wall of the pressing cavity 17, and the other end of the pressing elastic piece 32 in the elastic force direction is welded and fixed on the end face of the driving portion 311 away from the pressing portion 312. The elastic force direction of the pressing elastic piece 32 is parallel to the sliding direction of the pressing rod 31, the pressing elastic piece 32 has the tendency to drive the driving portion 311 to slide in the direction close to the sealing groove 12, and the pressing portion 312 drives the pressing sealing ring 2 to deform in the direction close to the threaded hole 11 and abut against the outer wall of the screw rod.

[0049] With reference to Figure 2 And Figure 3 , the pressing rack 33 is slidably connected to the inner wall of the pressing cavity 17, the pressing rack 33 corresponds to a piston in the embodiment of the application, the sliding direction of the pressing rack 33 is parallel to the sliding direction of the pressing rod 31, and the pressing rack 33 is located between the pressing rod 31 and the limiting portion 15. One end of the pressing rod 31 protrudes out of the outer wall of the threaded portion 16, and the end portion of the protruding end face of the pressing rod 31 is provided with a buffer surface 331 in the form of a circular arc protrusion. The pressing gear 34 is rotatably connected to the inner wall of the pressing cavity 17, the rotation axis of the pressing rack 33 is perpendicular to the sliding direction of the pressing rod 31, the pressing gear 34 is located between the pressing rack 33 and the pressing rod 31, the pressing rack 33 meshes with the pressing gear 34, and the end face of the driving portion 311 is provided with a meshing tooth groove 313 meshing with the pressing gear 34.

[0050] With reference to Figure 2 And Figure 3When the worker holds the outer wall of the threaded part 16, the fingers press the buffer surface 331 and drive the compression rack 33 to slide towards the axis of the cap body 1, the compression gear 34 rotates, driving the driving part 311 to slide away from the axis of the cap body 1, the pressure of the extrusion part 312 on the compression sealing ring 2 disappears, the compression sealing ring 2 rebounds and is embedded in the sealing groove 12, realizing the automatic reset of the compression sealing ring 2. When the cap body 1 is screwed and fixed on the outer wall of the screw rod, the cap body 1 is loosened, the pressure on the compression rack 33 disappears, the elastic force of the compression elastic element 32 drives the driving part 311 to slide towards the axis of the cap body 1, the inner wall of the extrusion part 312 abuts against the compression sealing ring 2, the compression sealing ring 2 is deformed under pressure and abuts against the outer wall of the screw rod, increasing the locking force of the cap body 1 on the screw rod, so that the cap body 1 is not easy to separate from the screw rod, thereby improving the limiting stability of the cap body 1 on the object to be fixed.

[0051] With reference to Figure 2 Two sealing blocks 4 are connected to the threaded part 16, and the sealing blocks 4 correspond one-to-one to the compression cavities 17. The sealing blocks 4 are embedded in the cavity openings of the compression cavities 17 away from the limiting part 15, the circumferential outer wall of the sealing blocks 4 abuts against the circumferential inner wall of the compression cavities 17 to form fixation, and the end surface of the sealing blocks 4 is flush with the outer wall of the threaded part 16, realizing the closure of the compression cavities 17, so that the compression assembly 3 is not easy to separate from the compression cavities 17, thereby improving the abutting stability of the compression assembly 3 on the compression sealing ring 2.

[0052] With reference to Figure 2 and Figure 4 Two one-way cavities 18 are evenly spaced on the inner wall of the threaded hole 11 of the sliding part 14, the one-way cavities 18 are evenly distributed around the axis of the cap body 1, and the one-way cavities 18 correspond one-to-one to the compression cavities 17. The one-way cavities 18 penetrate the end surface of the sliding part 14 towards the direction of the closing part 13. The inner wall of the one-way cavity 18 close to the limiting part 15 is provided with a sliding arc groove 19, and the center line of the sliding arc groove 19 coincides with the axis of the cap body 1. The sliding arc groove 19 penetrates the end surface of the sliding part 14 and the outer wall of the limiting part 15 in the depth direction towards the threaded part 16, and the width of the sliding arc groove 19 in the sliding part 14 is smaller than the width of the sliding arc groove 19 in the limiting part 15. The inner wall of the one-way cavity 18 close to the limiting part 15 is provided with an air channel 141, and the air channel 141 penetrates the sliding part 14, the limiting part 15 and the threaded part 16 in the depth direction in sequence, the air channel 141 communicates with the compression cavity 17, and the slot opening of the air channel 141 in the compression cavity 17 is towards the end of the compression rack 33 away from the buffer surface 331.

[0053] With reference to Figure 2 and Figure 5The cap body 1 is connected with two one-way assemblies 5, and the one-way assemblies 5 correspond to the one-way cavities 18 one by one. The one-way assembly 5 comprises a one-way ball 51, a one-way arc plate 52, a one-way elastic piece 53, a limiting ball 54, a one-way rod 55 and a driving plate 56. In the embodiment of the application, the one-way rod 55 is a cylinder, one end of the one-way rod 55 is welded and fixed on the end face of the one-way ball 51, the other end of the one-way rod 55 is arranged in the sliding arc groove 19 of the sliding part 14 and is welded and fixed on the end face of the limiting ball 54, the limiting ball 54 is slidingly connected on the inner wall of the sliding arc groove 19 of the limiting part 15, the bottom wall of the one-way ball 51 is slidingly connected on the bottom wall of the one-way cavity 18, and the end face of the one-way ball 51 is used for abutting against the outer wall of the screw rod.

[0054] With reference to Figure 4 and Figure 5 The two ends of the one-way arc plate 52 in the length direction comprise a limiting end 521 and a rolling end 522, the rolling end 522 of the one-way arc plate 52 is rotationally connected on the inner wall of the one-way cavity 18, the rotation axis of the rolling end 522 of the one-way arc plate 52 is parallel to the axis of the cap body 1, and the end face of the one-way ball 51 away from the screw rod is in rolling contact with the inner arc surface of the one-way arc plate 52. The one-way elastic piece 53 can be a compression spring or a torsion spring, and in the embodiment of the application, the one-way elastic piece 53 is a torsion spring and has a certain deformation capacity. One end of the one-way elastic piece 53 in the elastic force direction is connected on the inner wall of the one-way cavity 18, the other end of the one-way elastic piece 53 in the elastic force direction is connected on the end face of the rolling end 522 of the one-way arc plate 52, the one-way elastic piece 53 has the elastic force to drive the one-way arc plate 52 to rotate towards the direction close to the axis of the cap body 1, and the one-way arc plate 52 has the trend that the distance from the limiting end 521 to the axis of the cap body 1 is less than the distance from the rolling end 522 to the axis of the cap body 1.

[0055] With reference to Figure 4 and Figure 5 When the cap body 1 is tightly fixed on the outer wall of the screw rod, the outer wall of the screw rod abuts against the outer wall of the one-way ball 51 and drives the one-way ball 51 to slide along the inner ring wall of the one-way arc plate 52 towards the direction close to the rolling end 522, the one-way ball 51 is located on the rolling end 522 of the one-way arc plate 52, the one-way ball 51 is in rolling contact with the outer wall of the screw rod, and the stable connection between the cap body 1 and the screw rod is realized; when the cap body 1 is separated from the outer wall of the screw rod due to the external vibration, the outer wall of the screw rod abuts against the outer wall of the one-way ball 51 and drives the one-way ball 51 to slide along the inner ring wall of the one-way arc plate 52 towards the direction close to the limiting end 521, the distance from the limiting end 521 to the axis of the cap body 1 is less than the distance from the rolling end 522 to the axis of the cap body 1, one end of the one-way ball 51 abuts against the inner ring wall of the one-way arc plate 52 to form the fixation, the other end of the one-way ball 51 abuts against the outer wall of the screw rod to form the limiting, the cap body 1 is not easy to rotate reversely on the outer wall of the screw rod, and thus the locking force of the cap body 1 on the screw rod is increased.

[0056] With reference to Figure 2 and Figure 4The driving plate 56 comprises a sealing part 561 and a guiding part 562. In the embodiment, the sealing part 561 is a cylinder, and the guiding part 562 is a square plate. One end of the axis of the sealing part 561 is welded and fixed to the end face of the guiding part 562. The sealing part 561 is slidingly connected to the inner wall of the air channel 141. The sliding direction of the sealing part 561 is parallel to the axis of the cap body 1. In the embodiment, the driving plate 56 is equivalent to a piston. The guiding part 562 is located in the air channel 141 in the sliding part 14. The guiding face 5621 is arranged on the end face of the limiting end 521 of the one-way arc plate 52. The inclination height of the guiding face 5621 increases with the distance to the axis of the cap body 1.

[0057] With reference to Figure 2 and Figure 4 The guiding face 5621 abuts against the end face of the limiting end 521 of the one-way arc plate 52. When it is needed to remove the cap body 1 from the threaded rod, the user presses the buffer face 331 with fingers. The guiding and pressing rack 33 slides towards the axis of the cap body 1. The air in the abutting cavity is driven into the air channel 141. The air pressure in the air channel 141 increases. The driving plate 56 is driven to slide towards the covering part 13. The guiding face 5621 abuts against and guides the limiting end 521 of the one-way arc plate 52 to rotate away from the axis of the cap body 1. The distance between the limiting end 521 of the one-way arc plate 52 and the axis of the cap body 1 is equal to the distance between the rolling end 522 of the one-way arc plate 52 and the axis of the cap body 1. At the same time, the cap body 1 is reversely rotated to be unscrewed from the threaded rod. The outer wall of the threaded rod abuts against the end face of the one-way ball 51 and guides the one-way ball 51 to slide reversely towards the limiting end 521 of the one-way arc plate 52. The abutting force of the limiting end 521 of the one-way arc plate 52 on the one-way ball 51 disappears. The one-way ball 51 located at the limiting end 521 of the one-way arc plate 52 is in rolling contact with the outer wall of the threaded rod. The cap body 1 is stably removed from the threaded rod.

[0058] The implementation principle of the high-strength nut in the embodiment is as follows. When the worker holds the outer wall of the threaded part 16 and presses the buffer face 331 with fingers, the guiding and pressing rack 33 slides towards the axis of the cap body 1. The pressing gear 34 rotates and drives the driving part 311 to slide away from the axis of the cap body 1. The pressure of the extruding part 312 on the pressing and sealing ring 2 disappears. The pressing and sealing ring 2 is automatically reset by rebounding and being embedded in the sealing groove 12. When the cap body 1 is screwed and fixed to the outer wall of the threaded rod, the cap body 1 is loosened. The pressure on the guiding and pressing rack 33 disappears. The elastic force of the pressing elastic member 32 drives the driving part 311 to slide towards the axis of the cap body 1. The inner wall of the extruding part 312 abuts against the pressing and sealing ring 2. The pressing and sealing ring 2 is deformed under pressure and abuts against the outer wall of the threaded rod. The locking force of the cap body 1 on the threaded rod is increased. The cap body 1 is not easily loosened from the threaded rod under the condition of vibration. A gasket does not need to be additionally arranged between the cap body 1 and the article to be fixed. The assembly steps of the two articles are reduced. The work burden of the worker is reduced. The work efficiency of the worker is improved.

[0059] The application further discloses a high-strength nut production process.

[0060] Material cutting, cutting the steel pipe into small steel ingots;

[0061] Nut rough forming, heating and softening the small steel ingots and pressing to form nut roughs, and processing the nut roughs to form compression cavities 17 and sealing grooves 12;

[0062] Compression assembly 3 installation, embedding the compression rack 33, the compression gear 34, the compression elastic member 32 and the compression rod 31 into the compression cavity 17 in sequence, embedding the sealing block 4 into the compression cavity 17, and fixing the sealing block 4 to the inner wall of the compression cavity 17 to form a fixed connection, and welding the connection between the sealing block 4 and the inner wall of the compression cavity 17 to realize the installation of the compression assembly 3 on the nut rough

[0063] Nut rough polishing, polishing the nut rough after cooling;

[0064] Nut threading forming, quenching the nut rough to increase the hardness, and threading the inner wall of the nut rough to form a high-strength nut.

[0065] The application discloses a high-strength nut production process, which has the advantages that the nut rough is quenched to increase the hardness of the high-strength nut, so that the high-strength nut is not prone to delay fracture and fatigue fracture, thereby prolonging the service life of the high-strength nut; meanwhile, the compression assembly 3 is installed on the high-strength nut in the production process of the high-strength nut, without the need of external gaskets, so that the locking force between the nut and the screw rod is increased, thereby reducing the assembly steps of the nut, reducing the work burden of workers, and improving the work efficiency of the workers.

[0066] The above are preferred embodiments of the application, and the protection scope of the application is not limited thereto, so that: any equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A screw cap characterised in that: The utility model provides a cap body (1) and compression seal ring (2) including, the cap body (1) has the threaded hole (11) for screw thread connection, the threaded hole (11) inner wall sets up the sealing groove (12), the sealing groove (12) is used for embedding compression seal ring (2), the compression seal ring (2) inner ring wall is used for fixedly pressing the outer wall of screw, the cap body (1) is connected with compression assembly (3), the sealing groove (12) inner wall sets up compression cavity (17), the compression assembly (3) includes compression rod (31) and compression elastic element (32), the compression elastic element (32) one end of elastic force direction is connected in compression cavity (17) inner wall, the compression elastic element (32) other end of elastic force direction is connected in compression rod (31) end, the end face of compression rod (31) away from compression elastic element (32) abuts the outer ring wall of compression seal ring (2), the compression elastic element (32) has the elastic force drive compression rod (31) to the direction of approaching sealing groove (12) slip, and the compression rod (31) drive compression seal ring (2) to the direction of approaching threaded hole (11) deformation tendency;Compression assembly (3) still includes compression rack (33) and compression gear (34), the compression cavity (17) is towards away from the axis of cap body (1) direction through cap body (1) outer wall, the compression rack (33) slidingly connects on compression cavity (17) inner wall, the compression rack (33) sliding direction and compression rod (31) sliding direction are parallel with each other, and the compression rack (33) end portion protrudes cap body (1) outer wall, the compression gear (34) is rotatably connected on compression cavity (17) inner wall, the compression gear (34) is located between compression rod (31) and compression rack (33), the compression rack (33) engages compression gear (34), the end face of compression rod (31) sets up the meshing tooth groove (313) with compression gear (34) engagement;The cap body (1) is connected with one-way assembly (5), the threaded hole (11) inner wall sets up one-way cavity (18), the one-way assembly (5) includes one-way arc plate (52) and one-way ball (51), the one-way arc plate (52) is connected on one-way cavity (18) inner wall, the length direction both ends of one-way arc plate (52) include limit end (521) and rolling end (522), the distance from limit end (521) to the axis of cap body (1) is less than the distance from rolling end (522) to the axis of cap body (1), the one-way ball (51) slidingly connects on one-way cavity (18) inner wall, one-way ball (51) one end abuts one-way arc plate (52) end face, the other end of one-way ball (51) is used for abutting the outer wall of screw, when the cap body (1) is tightly fixed on the outer wall of screw, the outer wall of screw abuts one-way ball (51) end face, and is guided one-way ball (51) along one-way arc plate (52) arc surface and slides towards the direction of approaching rolling end (522), one-way ball (51) end face and the outer wall of screw rolling contact.

2. A cap according to claim 1, wherein: The pressing rack (33) protrudes from the end face of the cap body (1) and is provided with a buffer surface (331) in the form of a circular arc protrusion.

3. A cap according to claim 1, wherein: The pressing cavity (17) penetrates the outer wall of the cap body (1) along the axis direction of the cap body (1), the cap body (1) is connected with a sealing block (4), the pressing rack (33), the pressing gear (34), the pressing elastic member (32) and the pressing rod (31) are sequentially embedded in the pressing cavity (17), the sealing block (4) is embedded in the pressing cavity (17), the circumferential outer wall of the sealing block (4) is tightly abutted against the inner wall of the pressing cavity (17) to form fixation, and the end face of the sealing block (4) is flush with the end face of the cap body (1).

4. A cap according to claim 1, wherein: The rolling end (522) of the one-way arc plate (52) is rotationally connected to the inner wall of the one-way cavity (18), and the rotation axis of the one-way arc plate (52) is parallel to the axis of the cap body (1); the one-way assembly (5) further comprises a one-way elastic member (53), one end of the elastic force direction of the one-way elastic member (53) is connected to the inner wall of the one-way cavity (18), the other end of the elastic force direction of the one-way elastic member (53) is connected to the rolling end (522) of the one-way arc plate (52), the one-way elastic member (53) has elastic force to drive the one-way arc plate (52) to rotate, and the limiting end (521) of the one-way arc plate (52) has a tendency to tilt towards the axis of the cap body (1).

5. A cap according to claim 4, wherein: The one-way assembly (5) further comprises a limiting ball (54) and a one-way rod (55), one end of the one-way rod (55) is connected to the end face of the one-way ball (51), the other end of the one-way rod (55) is connected to the end face of the limiting ball (54), the inner wall of the one-way cavity (18) is provided with a sliding arc groove (19), the center line of the sliding arc groove (19) coincides with the axis of the cap body (1), and the limiting ball (54) is slidingly connected to the inner wall of the sliding arc groove (19) to drive the one-way ball (51) to slide along the arc surface of the one-way arc plate (52) in the inner wall of the one-way cavity (18).

6. A cap according to claim 5, wherein: The bottom wall of the one-way cavity (18) is provided with an air channel (141), the air channel (141) communicates with the pressing cavity (17), the air channel (141) is located at the notch of the pressing cavity (17) and faces the end of the pressing rack (33), the one-way assembly (5) further comprises a driving plate (56), the driving plate (56) is slidingly connected to the inner wall of the air channel (141), the limiting end (521) of the one-way arc plate (52) abuts against the end face of the driving plate (56), when the pressing rack (33) slides towards the axis of the cap body (1), the air in the pressing cavity (17) enters the air channel (141), the air pressure in the air channel (141) increases, the driving plate (56) slides towards the one-way cavity (18), and the driving plate (56) drives the limiting end (521) of the one-way arc plate (52) to rotate away from the axis of the cap body (1).

7. A cap according to claim 6, wherein: The end face of the driving plate (56) abutting against the one-way arc plate (52) is provided with a guide surface (5621), and the inclination height of the guide surface (5621) increases with the distance to the axis of the cap body (1) decreasing.

8. A process for producing a screw cap, characterized by: The nut is produced by the steps of: Cutting the steel pipe into small ingots; Forming the nut blank by heating and softening the small ingots and pressing them into a nut blank, and processing the nut blank to form a pressing cavity (17) and a sealing groove (12); Installing the pressing assembly (3) by sequentially embedding a pressing rack (33), a pressing gear (34), a pressing elastic member (32), and a pressing rod (31) into the pressing cavity (17), embedding a sealing block (4) into the pressing cavity (17), and fixing the sealing block (4) to the inner wall of the pressing cavity (17) by abutting the outer wall of the sealing block (4) to the inner wall of the pressing cavity (17), so that the end surface of the sealing block (4) is flush with the end surface of the nut blank, and the connection between the sealing block (4) and the inner wall of the pressing cavity (17) is welded and fixed, thereby achieving the installation of the pressing assembly (3) on the nut blank; Polishing the nut blank after cooling; Forming the nut by quenching the nut blank to increase the hardness and tapping the inner wall of the nut blank to form the nut.

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