Fastener with high torque resistance

Abstract

The utility model relates to the technical field of fasteners, and discloses a high-torque-resistance fastener which comprises a nut and a polished rod end welded to the center end of the bottom of the nut, a threaded end is integrally formed at the end, away from the nut, of the polished rod end, a gasket is sleeved on the threaded end, and the threaded end is connected with the nut. A hexagon nut is installed on the threaded end and located below the gasket in a threaded mode. A lubricating assembly is fixed to the top of the nut and located on the peripheral face of the polished rod end. According to the fastener with the high torque resistance, the threaded end is coated with lubricating oil, the lubrication degree between the hexagon nut and the threaded end is guaranteed, the friction coefficient is reduced, larger pre-tightening force can be generated under the condition that the same torque is applied, and therefore the torque resistance of the fastener is improved; the fastening area of the fastener can be increased through the arrangement of the anti-skid lines and the fastening bolts, and the torque resistance of the fastener is enhanced by dispersing stress and improving friction resistance to increase the fastening area.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a fastener with high torque resistance. Background Art

[0002] Fasteners are a type of mechanical parts used for fastening connections and are extremely widely used. They are used in a wide range of industries, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, molds, hydraulics, and so on. Various fasteners can be seen on various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemicals, meters, and supplies. They are the most widely used mechanical basic parts.

[0003] Prior art publication CN212899313U discloses a high-torque fastener comprising a fastening rod and a stop assembly. The fastening rod is threaded on both its upper and lower sides, with the threads running in opposite directions. Nuts are threadedly connected to the rod's upper and lower ends, and the top of the rod is equipped with an auxiliary assembly comprising a connector, a connection hole, and a hexagonal slot. This high-torque fastener offers excellent strength, increased load capacity, and prevents loosening. It also facilitates tightening operations and is highly practical.

[0004] In view of the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: in order to improve the anti-torque and tightening effects, the nut and the nut are fixed together through a limiting component to achieve synchronous movement, which is used to improve the anti-torque and tightening effects. However, in actual application, there is a layer plate blocking the nut and the nut, and the limiting component cannot pass directly through the component, so the nut and the nut cannot be fixed together, which results in many limitations and inconveniences.

[0005] To this end, we propose a fastener with high torque resistance. Utility Model Content

[0006] In view of the above-mentioned existing method of fixing the nut and the nut together through a limiting component to achieve synchronous movement, which is used to improve the torque resistance and tightening effect, and in actual application, there is a layer plate blocking the nut and the nut, and the limiting component cannot directly pass through the component, so the nut and the nut cannot be fixed together, which has many limitations and inconveniences, and the present utility model is proposed.

[0007] Therefore, the purpose of the present invention is to provide a fastener with high torque resistance, which aims to increase the torque resistance effect of the fastener.

[0008] To solve the above technical problems, the present invention provides the following technical solutions: a high-torque-resistance fastener, comprising a nut and a polished rod end welded to the center end of the bottom of the nut, wherein the polished rod end is integrally formed with a threaded end at one end away from the nut, a washer is sleeved on the threaded end, and a hexagonal nut is threadedly mounted on the threaded end and below the washer;

[0009] A lubrication assembly is fixed to the top of the nut and on the peripheral surface of the polished rod end. The lubrication assembly includes a silo welded to the bottom end of the nut and the peripheral surface of the polished rod end, and lubricating oil is provided in the inner cavity of the silo. A circle of liquid outlet holes is provided at the center of the circle of the bottom end of the silo, and a sealing ring for blocking the liquid outlet holes is bonded to the bottom end of the silo.

[0010] As a preferred solution of the high-torque-resistant fastener of the present invention, the inner wall surface of the sealing ring is bonded with an adhesive layer, and the vertical section between the sealing ring and the adhesive layer is T-shaped.

[0011] As a preferred solution of the high-torque-resistant fastener of the utility model, a liquid injection pipe is welded at the liquid injection port on the peripheral surface of the silo, and a rubber plug is provided at the liquid inlet end of the liquid injection pipe.

[0012] As a preferred solution of the high-torque-resistant fastener described in the utility model, a hexagonal block is welded to the bottom of the nut, and a circular hole for storing the lubrication component is opened at the center of the bottom of the hexagonal block, and a storage hole for the injection tube to pass through is opened on one side of the hexagonal block.

[0013] As a preferred solution of the high-torque-resistant fastener of the present invention, both end surfaces of the gasket are provided with anti-slip grooves.

[0014] As a preferred solution of the high-torque-resistant fastener described in the present invention, a circle of threaded holes is provided at the outer edge of the bottom of the hexagonal nut, and fastening bolts are threadedly installed through the threaded holes.

[0015] Beneficial effects of the utility model:

[0016] The utility model applies lubricating oil on the threaded end to ensure the lubrication between the hexagonal nut and the threaded end, reducing the friction coefficient, so that when the same torque is applied, a greater pre-tightening force can be generated, thereby improving the anti-torque ability of the fastener. At the same time, the provision of anti-slip patterns and fastening bolts will increase the fastening area of ​​the fastener. Increasing the fastening area enhances the anti-torque ability of the fastener by dispersing stress and increasing friction resistance. The dual measures ensure the high anti-torque performance of the fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of a high-torque-resistant fastener of the present invention.

[0019] Figure 2 The utility model is a schematic diagram of the bottom view of the end cover of a fastener with high torque resistance.

[0020] Figure 3 The utility model is a schematic diagram of the exploded structure of a lubrication assembly of a fastener with high torque resistance.

[0021] Figure 4 The utility model is a schematic diagram of the exploded structure of a hexagonal nut and a gasket of a high-torque-resistant fastener.

[0022] Description of reference numerals:

[0023] 1. Nut; 11. Rod end; 12. Threaded end; 13. Hexagonal block; 14. Round hole; 15. Storage hole; 2. Hexagonal nut; 21. Threaded hole; 22. Fastening bolt; 3. Gasket; 31. Anti-slip groove; 4. Lubrication component; 41. Silo; 42. Liquid outlet; 43. Liquid injection tube; 44. Rubber plug; 45. Sealing ring; 46. Adhesive layer. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0025] Reference Figure 1-4 , which is an embodiment of the present invention, provides a high-torque-resistant fastener, which includes a nut 1 and a polished rod end 11 welded to the center end of the bottom of the nut 1. The polished rod end 11 is integrally formed with a threaded end 12 at one end away from the nut 1. A washer 3 is sleeved on the threaded end 12. A hexagonal nut 2 is threadedly mounted on the threaded end 12 and below the washer 3.

[0026] A lubrication assembly 4 is fixed to the top of the nut 1 and on the peripheral surface of the polished rod end 11. The lubrication assembly 4 includes a silo 41 welded to the bottom end of the nut 1 and the peripheral surface of the polished rod end 11, and lubricating oil is provided in the inner cavity of the silo 41. A circle of liquid outlet holes 42 is provided at the center of the bottom end of the silo 41, and a sealing ring 45 is bonded to the bottom end of the silo 41 for blocking the liquid outlet holes 42. When the hexagonal nut 2 is threadedly connected to the threaded end 12, the lubricating oil adhered to the outer wall of the threaded end 12 will reduce the friction coefficient between the hexagonal nut 2 and the threaded end 12, thereby reducing the resistance caused by friction. Through lubrication, the friction between the fasteners can be significantly reduced, so that when the same torque is applied, a greater pre-tightening force can be generated, thereby improving the torque resistance of the fasteners. Lubrication can also reduce wear and extend the service life of the fasteners.

[0027] Lubricating oil is applied to the threaded end 12 to ensure the lubrication between the hexagonal nut 2 and the threaded end 12 to reduce the friction coefficient, so that when the same torque is applied, a greater pre-tightening force can be generated, thereby improving the fastener's anti-torque ability. At the same time, the setting of the anti-slip pattern 31 and the fastening bolt 22 will increase the fastening area of ​​the fastener. Increasing the fastening area enhances the fastener's anti-torque ability by dispersing stress and increasing friction resistance. The dual measures ensure the fastener's high anti-torque performance.

[0028] An adhesive layer 46 is bonded to the inner wall surface of the sealing ring 45 , and a vertical section between the sealing ring 45 and the adhesive layer 46 is T-shaped.

[0029] A liquid injection pipe 43 is welded to the liquid injection port on the peripheral surface of the silo 41 , and a rubber plug 44 is provided at the liquid inlet end of the liquid injection pipe 43 .

[0030] Use a brand new sealing ring 45 to be put on the polished rod end 11, and the top of the sealing ring 45 is tightly adhered to the bottom of the silo 41 to seal the liquid outlet 42. At the same time, the sealing ring 45 is also tightly adhered to the peripheral surface of the polished rod end 11. Then, pull out the rubber plug 44 from the inlet of the injection pipe 43, and inject the lubricating oil into the interior of the silo 41 through the injection pipe 43 for storage. The lubricating oil inside the silo 41 is replenished to realize the recycling of the fasteners. When using it, the silo 41 also has stored lubricating oil.

[0031] A hexagonal block 13 is welded to the bottom of the nut 1 , and a circular hole 14 for storing the lubricating component 4 is opened at the center of the bottom of the hexagonal block 13 , and a storage hole 15 for the injection tube 43 to pass through is opened on one side of the hexagonal block 13 .

[0032] Both end surfaces of the gasket 3 are provided with anti-slip grooves 31. The anti-slip grooves 31 on both end surfaces of the gasket 3 will increase the friction coefficient between the gasket 3 and the shell and between the hexagonal nut 2 and the gasket 3, which is beneficial to improving the firmness of the fastener installation.

[0033] A circle of threaded holes 21 is provided at the outer edge of the bottom of the hexagonal nut 2, and a fastening bolt 22 is threadedly installed through the threaded hole 21. The fastening bolt 22 is installed inside the threaded hole 21, and the tail end of the fastening bolt 22 will contact the anti-slip groove 31 on the lower side. The mutual interference and fixation between the fastening bolt 22 and the anti-slip groove 31 further reinforces the hexagonal nut 2, which is beneficial to prevent the self-rotation of the hexagonal nut 2 due to factors such as vibration, and improves the firmness of the fastener reinforcement.

[0034] During use, when using the fastener, the hexagonal nut 2 and the washer 3 are removed from the threaded end 12, and then the sealing ring 45 is peeled off from the bottom end of the silo 41. At this time, the sealing ring 45 releases the obstruction of the liquid outlet 42. At this time, the lubricating oil inside the silo 41 leaks upward through the liquid outlet 42, and the lubricating oil flows along the outer wall of the polished rod end 11 to the outer wall surface of the threaded end 12, thereby lubricating the threaded end 12.

[0035] Put the washer 3 on the threaded end 12 first, and then thread the hexagonal nut 2 on the threaded end 12. At this time, the washer 3 is located at the top of the hexagonal nut 2. The hexagonal nut 2 rises on the threaded end 12 and moves upward against the washer 3 until the washer 3 is blocked and cannot move. At this time, the cooperation between the nut 1 and the hexagonal nut 2 plays a tightening role.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A fastener with high torque resistance, characterized by: It comprises a nut (1) and a polished rod end (11) welded to the center end of the bottom of the nut (1), wherein the polished rod end (11) is integrally formed with a threaded end (12) at one end away from the nut (1), a washer (3) is sleeved on the threaded end (12), and a hexagonal nut (2) is threadedly mounted on the threaded end (12) and below the washer (3); A lubricating assembly (4) is fixed to the top of the nut (1) and on the peripheral surface of the polished rod end (11). The lubricating assembly (4) includes a silo (41) welded to the bottom end of the nut (1) and the peripheral surface of the polished rod end (11), and lubricating oil is provided in the inner cavity of the silo (41). A circle of liquid outlet holes (42) is provided at the center of the circle of the bottom end of the silo (41), and a sealing ring (45) for blocking the liquid outlet holes (42) is bonded to the bottom end of the silo (41).

2. A fastener with high torque resistance according to claim 1, characterized in that: The inner wall surface of the sealing ring (45) is bonded with an adhesive layer (46), and the vertical section of the sealing ring (45) and the adhesive layer (46) is T-shaped.

3. A fastener with high torque resistance according to claim 2, characterized in that: A liquid injection pipe (43) is welded to the liquid injection port on the peripheral surface of the silo (41), and a rubber plug (44) is provided at the liquid inlet end of the liquid injection pipe (43).

4. A fastener with high torque resistance according to claim 3, characterized in that: A hexagonal block (13) is welded to the bottom of the nut (1), and a circular hole (14) for storing the lubricating component (4) is provided at the center of the bottom of the hexagonal block (13). A storage hole (15) for the injection tube (43) to pass through is provided on one side of the hexagonal block (13).

5. A fastener with high torque resistance according to claim 4, characterized in that: Anti-slip patterns (31) are provided on both end surfaces of the gasket (3).

6. A fastener with high torque resistance according to claim 5, characterized in that: A circle of threaded holes (21) is provided at the outer edge of the bottom of the hexagonal nut (2), and fastening bolts (22) are threadedly installed through the threaded holes (21).

Images