Tensile matching type locknut

Abstract

The utility model discloses a stretching matching type locknut which comprises a stretching locknut body and a first internal thread, the first internal thread is machined on the inner wall of a round T-shaped cavity of the stretching locknut body, a six-circle tooth-shaped spline is machined on the outer wall of the upper end of the stretching locknut body, and a locking mechanism is installed below the stretching locknut body. The utility model relates to the technical field of fasteners, an external counter-acting force fulcrum is not needed in the bolt stretching process, the bolt only receives a stretching load, meanwhile, the phenomenon of thread damage and flange damage are eliminated, and due to the existence of a stretching anti-loosening threaded bushing, when the stretching anti-loosening nut is vibrated, the bolt can be prevented from being damaged. According to the anti-loosening threaded bushing, vibration energy can be absorbed and relieved by stretching force of stretching the anti-loosening threaded bushing, so that the influence on bolt connection is reduced, and the anti-loosening threaded bushing has good anti-seismic performance and is particularly suitable for areas with frequent vibration or large vibration.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a tension matching anti-loosening nut. Background Art

[0002] Bolts and nuts are a common type of connector in machinery. The existing nut shapes mostly include hexagonal nuts, square nuts, round nuts, wing nuts, locking nuts, and special-shaped nuts. They are widely used and easy to use. Among them, nuts are mostly prevented from loosening by friction, mechanical and permanent methods. Specifically, there are methods such as adding spring washers, double nuts, self-locking nuts, using locking agents and welding. Bolt and nut connection is a common fastening method in mechanical engineering, and its reliability directly affects the stability and safety of the equipment.

[0003] However, after searching, it was found that the nuts in the prior art do not have an anti-loosening structure. Therefore, in actual applications, the bolt and nut connections are prone to loosening due to factors such as vibration, impact, and temperature changes, which not only affects the normal operation of the equipment, but may even cause harm due to the loosening of the nuts. Therefore, taking effective anti-loosening measures is of great significance to ensuring the stability and reliability of the bolt and nut connection. Therefore, a stretch-matching anti-loosening nut is designed to solve this problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a stretch-matching anti-loosening nut, which solves the problem that the nuts in the prior art are prone to loosening at the bolt and nut connections due to factors such as vibration, impact, and temperature changes, which not only affects the normal operation of the equipment but can even cause harm due to the loosening of the nut.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a stretch-matching anti-loosening nut, including a stretch-matching anti-loosening nut and a first internal thread, the inner wall of the circular T-shaped cavity of the stretch-matching anti-loosening nut is processed with the first internal thread, the upper end outer wall of the stretch-matching anti-loosening nut is processed with a six-circular tooth spline, and an anti-loosening mechanism is installed below the stretch-matching anti-loosening nut.

[0006] Preferably, the anti-loosening mechanism comprises a stretch anti-loosening threaded bushing installed inside the lower part of the stretch anti-loosening nut, the outer wall of the stretch anti-loosening threaded bushing is processed with external teeth, and the inner wall of the stretch anti-loosening threaded bushing is processed with a second internal thread.

[0007] Preferably, a stretching anti-loosening gasket is installed below the stretching anti-loosening nut, the inner wall of the stretching anti-loosening gasket is processed with internal teeth, and the lower surface of the stretching anti-loosening gasket is processed with anti-loosening oblique teeth.

[0008] Preferably, the inner teeth of the stretch-locking gasket are meshed and connected with the outer teeth of the stretch-locking threaded bushing.

[0009] Preferably, the outer wall of the stretch-locking gasket is processed with twelve circular splines.

[0010] Preferably, the stretch anti-loosening threaded bushing and the stretch anti-loosening nut are threadably connected with a bolt via a second internal thread and a first internal thread.

[0011] Beneficial Effects

[0012] The utility model provides a stretch-matching anti-loosening nut, which has the following beneficial effects:

[0013] 1. No external reaction force fulcrum is required during the bolt tensioning process. The bolt only receives the tensile load, while eliminating thread damage and flange damage.

[0014] 2. Earthquake resistance: Due to the presence of the tensile anti-loosening thread bushing, the tensile anti-loosening nut can absorb and alleviate vibration energy through the tensile force of the tensile anti-loosening thread bushing when it is subjected to vibration, thereby reducing the impact on the bolt connection. Therefore, it has good earthquake resistance and is particularly suitable for areas with frequent or large vibrations.

[0015] 3. Anti-loosening performance: The T-lock structure inside the tensile anti-loosening threaded bushing and the tensile anti-loosening nut works together to prevent the bolts from loosening.

[0016] 4. Easy installation and excellent anti-loosening performance: The stretching anti-loosening nut adopts a unique stretching anti-loosening principle, has excellent anti-loosening performance, and can maintain a good tightening state in various harsh environments.

[0017] 5. Simple and easy to use: The installation and removal process of the stretch anti-loosening nut is similar to that of ordinary nuts, but it is better than ordinary nuts and has an automatic anti-loosening effect.

[0018] 6. Wide range of applications: Stretch lock nuts are suitable for various bolt connections, including steel, stainless steel, aluminum alloy and other materials.

[0019] 7. Long life: The tension lock nut has a long service life, which can reduce maintenance and replacement costs and improve the operating efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an exploded view of the utility model.

[0021] Figure 2 It is a three-dimensional diagram of the utility model.

[0022] Figure 3 It is a structural schematic diagram of the utility model.

[0023] Figure 4 It is a plan cross-sectional view of the utility model.

[0024] Figure 5 It is a partial bottom view of the utility model.

[0025] In the figure: 1. tension lock nut; 2. first internal thread; 3. six-circular spline; 4. tension lock thread bushing; 5. external teeth; 6. second internal thread; 7. tension lock gasket; 8. anti-loosening oblique teeth; 9. twelve circular splines; 10. bolt; 11. internal teeth. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-5 The utility model provides a technical solution: a tension matching type anti-loosening nut, comprising a tension anti-loosening nut 1 and a first internal thread 2, the inner wall of the circular T-shaped cavity of the tension anti-loosening nut 1 is processed with the first internal thread 2, the upper end outer wall of the tension anti-loosening nut 1 is processed with a six-circle tooth spline 3, and an anti-loosening mechanism is installed below the tension anti-loosening nut 1;

[0028] A circular T-shaped cavity can be processed inside the stretch anti-loosening nut 1 to form a T-shaped locking structure. The inner hole of the T-shaped locking structure at the lower end is a circular T-shaped cavity with a high lower edge inner diameter smaller than the outer diameter of the stretch anti-loosening threaded bushing 4, and an upper edge inner diameter smaller than the lower edge inner diameter. In this way, the design of the T-shaped lock can ensure the locking of the stretch threaded bushing 4 when torque is applied to the bolt 10, thereby preventing loosening. At the same time, the outer wall of the upper end of the stretch anti-loosening nut 1 is designed as a plurality of high six-circular tooth spline 3 structures, which are used for pre-tightening and loading torque of the nut. The stretch anti-loosening nut 1 can be made of high-strength, high-toughness, and corrosion-resistant nut materials to improve the stability and reliability of the connection.

[0029] This embodiment is further configured such that the anti-loosening mechanism includes a stretch anti-loosening thread bushing 4 installed inside the lower part of the stretch anti-loosening nut 1, the outer wall of the stretch anti-loosening thread bushing 4 is processed with external teeth 5, and the inner wall of the stretch anti-loosening thread bushing 4 is processed with a second internal thread 6;

[0030] The tension locking thread bushing 4 can be connected to the bolt 10 via the second internal thread 6 .

[0031] This embodiment is further configured that a stretching anti-loosening gasket 7 is installed below the stretching anti-loosening nut 1, the inner wall of the stretching anti-loosening gasket 7 is processed with inner teeth 11, and the lower surface of the stretching anti-loosening gasket 7 is processed with anti-loosening oblique teeth 8;

[0032] The lower end surface of the stretch anti-loosening gasket 7 is an anti-loosening bevel tooth 8, which can prevent slipping during the tightening process and prevent loosening after the tightening is completed. The upper end surface is a plane, the inner hole is an inner tooth 11 that is parallel and uniform up and down, and the lower end of the outside is a plurality of high outer edges.

[0033] This embodiment is further configured such that the inner teeth 11 of the stretch-locking gasket 7 are meshed and connected with the outer teeth 5 of the stretch-locking threaded bushing 4;

[0034] This makes it convenient to combine the tension-proof gasket 7 and the tension-proof threaded bushing 4 together.

[0035] This embodiment is further configured such that the outer wall of the tension locking gasket 7 is processed with twelve circular splines 9;

[0036] The upper end of the tension locking gasket 7 is a plurality of high twelve circular splines 9, which can also be processed into a hexagonal shape for use in tool tightening as a reaction force fulcrum.

[0037] This embodiment is further configured such that the tension locking thread bushing 4 and the tension locking nut 1 are threadedly connected with a bolt 10 via the second internal thread 6 and the first internal thread 2 .

[0038] It is worth noting that the models of the electrical structures involved in this application can be selected according to user needs, and only need to meet the use requirements of this application. At the same time, the corresponding control circuits are all existing technologies and can be fully implemented by personnel in this field, so no further details will be given.

[0039] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the field. The following mainly introduces the working principle and process.

[0040] Embodiment: When it is necessary to use this device, first install the tension-proof thread bushing 4 into the tension-proof gasket 7, and make the outer teeth 5 of the tension-proof thread bushing 4 mesh with the inner teeth 11 of the tension-proof gasket 7, then screw the tension-proof thread bushing 4 into the bolt 10 for preliminary pre-tightening, and then add the tension-proof nut 1 to apply torque, the bolt 10 generates an upward tensile force and moves upward, during the pressure application process, the tension-proof thread bushing 4 is subjected to pressure and moves upward in parallel, and the pressure compensation of the bolt 10 is embedded in the circular T-shaped cavity and the first internal thread 2 of the tension-proof nut 1, so that a close contact is formed between the bolt 10 and the tension-proof nut 1, and when the bolt 10 is connected, the tension-proof thread bushing 4 can continue to maintain a stretched state, effectively preventing the bolt 10 from loosening when connected;

[0041] When the tension lock nut 1 applies pressure to the tension lock washer 7, the elastic fulcrum of the tension lock washer 7 will have a directional thrust, so that the tension lock nut 1 will not loosen, thus enhancing the firmness;

[0042] When the stretching anti-loosening nut 1 rotates, the bolt 10 combined with the stretching anti-loosening threaded bushing 4 is axially stretched and moves upward together, and the reaction point is combined with the hexagonal spline 3 on the stretching anti-loosening threaded bushing 4, so that the stretching anti-loosening threaded bushing 4 becomes a reaction fulcrum. At the same time, the stretching anti-loosening gasket 7 at the bottom is tightly combined with the periphery of the stretching anti-loosening nut 1, which can prevent the internal stretching anti-loosening threaded bushing 4 from rotating and following the rotation. In this way, the overall structure is novel, the operation is simple, it is anti-slip and anti-loosening, it has a long service life, and it is safer and more reliable.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tension matching type anti-loosening nut, comprising a tension anti-loosening nut (1) and a first internal thread (2), wherein the inner wall of the circular T-shaped cavity of the tension anti-loosening nut (1) is processed with the first internal thread (2), characterized in that: The outer wall of the upper end of the stretching anti-loosening nut (1) is processed with a six-round tooth spline (3), and an anti-loosening mechanism is installed below the stretching anti-loosening nut (1).

2. A stretch-matching anti-loosening nut according to claim 1, characterized in that: The anti-loosening mechanism comprises a stretch anti-loosening threaded bushing (4) installed inside the lower part of the stretch anti-loosening nut (1), the outer wall of the stretch anti-loosening threaded bushing (4) is processed with external teeth (5), and the inner wall of the stretch anti-loosening threaded bushing (4) is processed with a second internal thread (6).

3. A stretch-matching locking nut according to claim 1, characterized in that: A stretching anti-loosening gasket (7) is installed below the stretching anti-loosening nut (1), the inner wall of the stretching anti-loosening gasket (7) is processed with internal teeth (11), and the lower surface of the stretching anti-loosening gasket (7) is processed with anti-loosening oblique teeth (8).

4. A stretch-matching locking nut according to claim 3, characterized in that: The inner teeth (11) of the stretching anti-loosening gasket (7) are meshed and connected with the outer teeth (5) of the stretching anti-loosening threaded bushing (4).

5. A stretch-matching locking nut according to claim 3, characterized in that: The outer wall of the stretching anti-loosening gasket (7) is processed with twelve circular splines (9).

6. A stretch-matching locking nut according to claim 2, characterized in that: The tension anti-loosening threaded bushing (4) and the tension anti-loosening nut (1) are threadedly connected with a bolt (10) via a second internal thread (6) and a first internal thread (2).

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