Reinforced fastening type lock bolt assembly
By designing a limiting groove and an anti-loosening clip structure on the bolt, the problem of bolt loosening caused by vibration in the prior art is solved, achieving a stable connection in a vibration environment, and at a low cost.
Patent Information
- Application Number
- CN202422982373.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-04
AI Technical Summary
Under conditions of significant vibration, the existing double-nut anti-loosening structure is prone to connection failure and cannot effectively prevent the fastening bolts from loosening.
Design a reinforced and fastening anti-loosening bolt assembly, including a bolt, a fastening nut, an anti-loosening clip, and an anti-loosening nut. By setting a limiting groove on the bolt and a limiting tenon on the anti-loosening clip, the fixing tenon of the anti-loosening clip is inserted into the fixing groove of the anti-loosening nut to achieve locking, ensuring that the connection between the bolt and the anti-loosening nut does not loosen.
It effectively prevents bolts from loosening under vibration conditions, ensuring the reliability and stability of the connection. It has a simple structure, low manufacturing cost, and is suitable for connecting equipment with high vibration.
Smart Images
Figure CN223498410U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bolt connection technology, specifically to a reinforced and fastening anti-loosening bolt assembly. Background Technology
[0002] When bolts and nuts are connected, a double-nut structure is often used for fastening in situations with minimal vibration; this is also known as a counter-nut anti-loosening mechanism. Once the two counter-nuts are tightened, there is always an interaction pressure between them. For either nut to rotate, it must overcome the friction between the engaged threads. Even if the external load changes, if the upper nut does not loosen, the pressure between the counter-nuts remains constant, thus preventing loosening.
[0003] In existing double-nut anti-loosening technology, under conditions of significant vibration, the anti-loosening nut usually loosens first, followed by the main fastening nut, ultimately leading to connection failure. Summary of the Invention
[0004] The purpose of this invention is to design a reinforced and fastening anti-loosening bolt assembly, which can effectively prevent the fastening bolts from loosening, has a good anti-loosening effect, can be widely used in the connection of equipment with large vibrations, is easy to construct, and ensures the effectiveness and reliability of the entire bolt connection; moreover, it has a simple structure and low manufacturing cost.
[0005] To achieve the above objectives, the technical solution of this utility model is as follows:
[0006] A reinforced and fastening anti-loosening bolt assembly, comprising,
[0007] The bolt has an axially oriented groove on its upper surface, and the axial length of the oriented groove is greater than the thickness of the connecting plate plus the thickness of the fastening nut.
[0008] Tighten the nut and fit it onto the bolt;
[0009] The anti-loosening clip is a ring with a limiting tenon protruding from its inner edge, which is used to fit into the limiting groove on the upper surface of the bolt; the outer edge of the anti-loosening clip has two or more fixing tenons protruding at intervals along the circumference; the anti-loosening clip is sleeved on the bolt and located on the top surface of the fastening nut.
[0010] The anti-loosening nut is a hexahedron, with a fixing groove in the center of each face along the axial direction that mates with the fixing tenon; the anti-loosening nut is sleeved on the bolt and located on the top surface of the anti-loosening clip; the anti-loosening nut is adjusted so that one of the fixing tenons on the anti-loosening clip is inserted into the fixing groove, thereby locking the bolt with the anti-loosening nut.
[0011] Preferably, the outer edge of the anti-loosening card is provided with two fixing tenons, and the central angle between the two fixing tenons is 1 to 30 degrees.
[0012] Preferably, the outer edge of the anti-loosening card is provided with three fixing tenons, the central angle between the first fixing tenon and the second fixing tenon is 15±5 degrees, and the central angle between the second fixing tenon and the third fixing tenon is 35±5 degrees.
[0013] Preferably, the anti-loosening card is a curved bowl-shaped gasket.
[0014] The reinforced and fastening anti-loosening bolt assembly of this utility model is designed to install an anti-loosening clip after the fastening nut is tightened to the required torque. The limiting tenon of the anti-loosening clip is placed in the limiting groove of the bolt, and then the anti-loosening nut is screwed in. As the anti-loosening nut is tightened, a fixing groove on the anti-loosening nut aligns with the fixing tenon of the anti-loosening clip. The fixing tenon of the anti-loosening clip is tapped with a tool so that it can be embedded in the shallow groove of the anti-loosening nut, thus achieving locking of the bolt and the anti-loosening nut.
[0015] When subjected to external force and vibration, as long as the latches on the inner and outer edges of the anti-loosening clip are not damaged, the anti-loosening nut will not loosen. The anti-loosening clip applies a preload to ensure that the pressure between the top nuts is always present, thus playing an anti-loosening role.
[0016] To remove the bolt and nut fastening structure, first remove the retaining clip of the anti-loosening clip embedded in the fixing groove of the anti-loosening nut, and then remove the anti-loosening nut and the fastening nut.
[0017] Compared with the prior art, the advantages of this utility model are:
[0018] This utility model designs an anti-loosening clip. Through the limiting and fixing clips on the anti-loosening clip, the bolt and the anti-loosening nut are locked together, which can effectively prevent the bolt from loosening. It has a good anti-loosening effect and can be widely used in the connection of equipment with large vibrations.
[0019] This utility model has a simple structure and low manufacturing cost. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;
[0021] Figure 2 This is a schematic diagram of the assembly of bolts, fastening nuts and lock nuts in an embodiment of this utility model;
[0022] Figure 3 for Figure 2 AA cross-section view;
[0023] Figure 4 for Figure 2 BB cross-section;
[0024] Figure 5 for Figure 2 Top view;
[0025] Figure 6 This is a top view of the anti-loosening card in an embodiment of this utility model;
[0026] Figure 7 This is a front view of the anti-loosening card in an embodiment of this utility model. Detailed Implementation
[0027] See Figures 1 to 7 The reinforced and fastening anti-loosening bolt assembly of this utility model includes,
[0028] Bolt 1 has an axially oriented limiting groove 11 on its upper surface. The axial length of the limiting groove 11 is greater than the thickness of the connecting plate 100 plus the thickness of the fastening nut 2.
[0029] Tighten nut 2 and fit it onto bolt 1;
[0030] The anti-loosening clip 3 is a ring with a limiting tenon 31 protruding from its inner edge, which is then embedded in the limiting groove 11 on the upper surface of the bolt 1; the outer edge of the anti-loosening clip 3 has two or more fixing tenons 32 protruding at intervals along the circumference; the anti-loosening clip 3 is sleeved on the bolt 1 and located on the top surface of the fastening nut 2.
[0031] The anti-loosening nut 4 is a hexahedron, with a fixing groove 41 in the center of each face along the axial direction that mates with the fixing tenon 32; the anti-loosening nut 4 is sleeved on the bolt 1 and located on the top surface of the anti-loosening clip 3; the anti-loosening nut 4 is adjusted so that one of the fixing tenons 32 on the anti-loosening clip 3 is inserted into the fixing groove 41, thereby locking the bolt 1 in the anti-loosening nut 4.
[0032] In this embodiment, the outer edge of the anti-loosening card 3 is provided with three fixing tenons 32, the central angle between the first fixing tenon and the second fixing tenon is 15 degrees, and the central angle between the second fixing tenon and the third fixing tenon is 35 degrees.
[0033] Preferably, the outer edge of the anti-loosening card 3 is provided with two fixing tenons 32, and the central angle between the two fixing tenons is 1 to 30 degrees.
[0034] Preferably, the anti-loosening card 3 is a curved bowl-shaped gasket.
[0035] When using this utility model, the fastening nut and bolt are tightened on the equipment or facility to meet the pre-tightening requirements. Then, the anti-loosening clip is installed, and the anti-loosening nut is screwed in. The anti-loosening nut is tightened until the curvature of the anti-loosening clip becomes straight. The fixing groove of the anti-loosening nut and the fixing tenon of the anti-loosening clip are aligned to ensure that the fixing tenon of the anti-loosening clip can be inserted into the fixing groove of the anti-loosening nut under external force. The anti-loosening clip locks the bolt and the anti-loosening nut together.
[0036] To remove the lock nut, first remove the locking clip from the locking groove of the lock nut, then remove the lock nut and the fastening nut.
Claims
1. A reinforced and fastening anti-loosening bolt assembly, characterized in that, include, The bolt has an axially oriented groove on its upper surface, and the axial length of the oriented groove is greater than the thickness of the connecting plate plus the thickness of the fastening nut. Tighten the nut and fit it onto the bolt; The anti-loosening clip is a ring with a limiting tenon protruding from its inner edge, which is used to fit into the limiting groove on the upper surface of the bolt; the outer edge of the anti-loosening clip has two or more fixing tenons protruding at intervals along the circumference; the anti-loosening clip is sleeved on the bolt and located on the top surface of the fastening nut. The anti-loosening nut is a hexahedron, with a fixing groove in the center of each face along the axial direction that mates with the fixing tenon; the anti-loosening nut is sleeved on the bolt and located on the top surface of the anti-loosening clip; the anti-loosening nut is adjusted so that one of the fixing tenons on the anti-loosening clip is inserted into the fixing groove, thereby locking the bolt with the anti-loosening nut.
2. The reinforced fastening anti-loosening bolt assembly as described in claim 1, characterized in that, The outer edge of the anti-loosening card is provided with two fixing tenons, and the central angle between the two fixing tenons is 1 to 30 degrees.
3. The reinforced and fastening anti-loosening bolt assembly as described in claim 1, characterized in that, The outer edge of the anti-loosening card is provided with three fixing tenons. The central angle between the first fixing tenon and the second fixing tenon is 15±5 degrees, and the central angle between the second fixing tenon and the third fixing tenon is 35±5 degrees.
4. The reinforced fastening anti-loosening bolt assembly as described in claim 1, 2, or 3, characterized in that, The anti-loosening card is a curved bowl-shaped gasket.