Lock bolt with preset deformation groove

Abstract

The utility model discloses a lock bolt with a preset deformation groove, which comprises a bolt head, one end of the bolt head is provided with a transition polish rod, one end of the transition polish rod is provided with a thread screwing rod, the outer side of the transition polish rod is provided with a supporting elastic piece, the inner side of the supporting elastic piece is provided with an elastic supporting piece, and the elastic supporting piece is provided with a thread screwing rod. A reinforcing wedge-shaped groove is formed in the surface of the transition polished rod, and one end of the elastic supporting piece is inserted into the inner side of the reinforcing wedge-shaped groove. According to the design of the supporting elastic piece, when the supporting elastic piece is used, the reinforcing wedge-shaped groove is formed in the surface of the transition polished rod, the groove depth is gradually changed, the root portion is in arc transition, stress concentration is avoided, the supporting elastic piece and the elastic supporting piece are supported at one end of the transition polished rod, and when the supporting elastic piece is used, the elastic supporting piece is engaged in the reinforcing wedge-shaped groove to form multidirectional resistance; the wedge-shaped structure converts vibration energy into radial expansion force, and the self-locking effect is enhanced.

Description

Technical Field

[0001] This utility model belongs to the technical field of anti-loosening bolts, specifically relating to anti-loosening bolts with pre-set deformation grooves. Background Technology

[0002] Anti-loosening bolts face the problem of preload attenuation caused by the accumulation of multi-directional micro-slippage under vibration conditions (such as aircraft engine installation and high-speed rail bogies).

[0003] Existing anti-loosening bolts are prone to deformation during installation due to stress concentration at the smooth shank. Furthermore, repeated disassembly and reassembly over a long period can affect their locking effect. Therefore, anti-loosening bolts with pre-designed deformation grooves are needed to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide an anti-loosening bolt with a pre-set deformation groove to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pre-formed deformation groove anti-loosening bolt, including a bolt head, one end of which is provided with a transition smooth rod, one end of which is provided with a threaded engagement rod, a support spring sheet is provided on the outer side of the transition smooth rod, an elastic support sheet is provided on the inner side of the support spring sheet, a reinforcing wedge groove is formed on the surface of the transition smooth rod, and one end of the elastic support sheet is inserted into the inner side of the reinforcing wedge groove.

[0006] Preferably, the shape of the support spring is a conical ring, and the elastic support piece is located at the top of the support spring.

[0007] Preferably, a reinforcing bracket is provided on one side of the supporting spring, and a reinforcing pin groove is provided on the surface of the threaded engagement rod, with one end of the reinforcing bracket engaging in the reinforcing pin groove.

[0008] Preferably, the reinforcing bracket is hook-shaped, and one end of the reinforcing bracket has an arc-shaped chamfer on the outer side.

[0009] Preferably, the reinforcing pin grooves are symmetrically arranged on both sides of the threaded engagement rod, and the position of the reinforcing bracket corresponds to the position of the reinforcing pin groove.

[0010] Preferably, one end of the elastic support piece has the same shape as the inner side of the reinforcing wedge groove, and the reinforcing wedge groove and the elastic support piece are fitted with an interference fit.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Through the design of the support spring, when in use, the reinforcing wedge groove on the surface of the transition rod is designed with a gradual change in groove depth and a rounded transition at the root to avoid stress concentration. It is supported at one end of the transition rod by the support spring and the elastic support plate. When in use, the elastic support plate engages in the reinforcing wedge groove to form multi-directional resistance. The wedge structure realizes the conversion of vibration energy into radial expansion force and enhances the self-locking effect.

[0013] 2. Through the design of the reinforcing bracket and reinforcing pin groove, the reinforcing bracket is installed in the reinforcing pin groove during use. When installed in the use position by the threaded engagement rod and nut, one end of the reinforcing bracket is inserted into the hole along with the threaded engagement rod and the transition smooth rod, thereby ensuring greater stability through the tight compression of the reinforcing bracket. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a side view schematic diagram of the supporting spring structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the supporting spring structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the present invention;

[0018] In the diagram: 1. Bolt head; 2. Support spring; 3. Transition smooth rod; 4. Threaded engagement rod; 5. Reinforcing pin groove; 6. Reinforcing wedge groove; 7. Reinforcing bracket; 8. Elastic support plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1: Please refer to Figures 1 to 4This utility model provides a technical solution: a pre-formed deformation groove anti-loosening bolt, including a bolt head 1, a transition rod 3 at one end of the bolt head 1, a threaded engagement rod 4 at one end of the transition rod 3, a support spring 2 on the outer side of the transition rod 3, and an elastic support plate 8 on the inner side of the support spring 2. A reinforcing wedge groove 6 is formed on the surface of the transition rod 3. One end of the elastic support plate 8 is inserted into the inner side of the reinforcing wedge groove 6. The support spring 2 is supported on the bolt head 1 and the workpiece, and the elastic support plate 8 is engaged in the reinforcing wedge groove 6. The axial structure formed by the reinforcing wedge groove 6 can effectively enhance the bending deformation resistance, thereby reducing the occurrence of damage. The support spring 2 is shaped as a conical ring, and the elastic support plate 8 is located at the top of the support spring 2, ensuring better support and anti-slip ability of the support spring 2 during use. The shape of one end of the elastic support plate 8 is the same as the shape of the inner side of the reinforcing wedge groove 6. The reinforcing wedge groove 6 and the elastic support plate 8 adopt an interference fit, making the engagement of the elastic support plate 8 and the reinforcing wedge groove 6 more stable during use.

[0021] As can be seen from the above description, this utility model has the following beneficial effects: When in use, the reinforcing wedge groove 6 designed on the surface of the transition light rod 3 has a gradually changing groove depth and the root adopts an arc transition to avoid stress concentration. It is supported at one end of the transition light rod 3 by the supporting spring piece 2 and the elastic support piece 8. When in use, the elastic support piece 8 engages in the reinforcing wedge groove 6 to form multi-directional resistance. The wedge structure realizes the conversion of vibration energy into radial expansion force, enhancing the self-locking effect.

[0022] Example 2: Please refer to Figures 1 to 4 As shown, based on Embodiment 1, this utility model provides a technical solution: a reinforcing bracket 7 is provided on one side of the supporting spring 2, and a reinforcing pin groove 5 is formed on the surface of the threaded engagement rod 4. One end of the reinforcing bracket 7 is engaged in the reinforcing pin groove 5. During use, the reinforcing bracket 7 is inserted into the fixing hole, thereby ensuring a more stable installation of the threaded engagement rod 4, the transition smooth rod 3, and the bolt head 1. The reinforcing bracket 7 is hook-shaped, and an arc-shaped chamfer is provided on the outer side of one end of the reinforcing bracket 7 to facilitate the insertion of the reinforcing bracket 7 into the fixing hole, thereby ensuring a more stable fixation. The reinforcing pin grooves 5 are symmetrically arranged on both sides of the threaded engagement rod 4, and the position of the reinforcing bracket 7 corresponds to the position of the reinforcing pin groove 5.

[0023] Using the above technical solution, when in use, the reinforcing bracket 7 is installed by engaging with the reinforcing pin groove 5, and then installed in the use position by the threaded engagement rod 4 and the nut. When the reinforcing bracket 7 is installed, one end of the reinforcing bracket 7 is inserted into the hole along with the threaded engagement rod 4 and the transition smooth rod 3, thereby ensuring greater stability through the tight pressure of the reinforcing bracket 7.

[0024] The working principle and usage process of this utility model are as follows: During use, the threaded engagement rod 4 and nut are installed in the usage position, the support spring 2 is supported on the bolt head 1 and the workpiece, and the elastic support plate 8 is engaged in the reinforcing wedge groove 6. The reinforcing bracket 7 is inserted into the fixing hole, thereby ensuring that the threaded engagement rod 4, the transition smooth rod 3 and the bolt head 1 are installed more stably. The axial structure formed by the reinforcing wedge groove 6 can effectively enhance the bending deformation resistance, thereby reducing the occurrence of damage. The anti-loosening design of the threaded engagement rod 4 and the nut ensures more stable installation and fixing.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A pre-formed deformation groove anti-loosening bolt, including a bolt head (1), characterized in that: One end of the bolt head (1) is provided with a transition rod (3), one end of the transition rod (3) is provided with a threaded engagement rod (4), a support spring (2) is provided on the outer side of the transition rod (3), an elastic support plate (8) is provided on the inner side of the support spring (2), a reinforcing wedge groove (6) is provided on the surface of the transition rod (3), and one end of the elastic support plate (8) is inserted into the inner side of the reinforcing wedge groove (6).

2. The anti-loosening bolt with a pre-set deformation groove according to claim 1, characterized in that: The shape of the support spring (2) is set as a conical ring, and the elastic support piece (8) is located at the top of the support spring (2).

3. The anti-loosening bolt with a pre-set deformation groove according to claim 1, characterized in that: A reinforcing insert (7) is provided on one side of the supporting spring (2), and a reinforcing pin groove (5) is provided on the surface of the threaded engagement rod (4). One end of the reinforcing insert (7) is engaged in the reinforcing pin groove (5).

4. The anti-loosening bolt with a pre-set deformation groove according to claim 3, characterized in that: The reinforcing bracket (7) is hook-shaped, and an arc-shaped chamfer is provided on the outer side of one end of the reinforcing bracket (7).

5. The anti-loosening bolt with a pre-set deformation groove according to claim 3, characterized in that: The reinforcing pin groove (5) is symmetrically arranged on both sides of the threaded engagement rod (4), and the position of the reinforcing bracket (7) corresponds to the position of the reinforcing pin groove (5).

6. The anti-loosening bolt with a pre-set deformation groove according to claim 1, characterized in that: One end of the elastic support plate (8) has the same shape as the inner side of the reinforcing wedge groove (6), and the reinforcing wedge groove (6) and the elastic support plate (8) are fitted with an interference fit.

Images