Tension adjusting bolt with self-locking function

Abstract

The utility model relates to the technical field of mechanical connection field, disclose a kind of tension adjusting bolt with self-locking function, including bolt, the surface thread connection of bolt has nut, the four corners of nut bottom are all provided with self-locking groove, the top of bolt is provided with positioning groove, the inside of positioning groove is provided with locating block, the top fixed connection of locating block has self-locking frame, the bottom of self-locking frame extends to the inside of self-locking groove. In the utility model, by nut thread connection in bolt surface and adjust to the position corresponding to the required tension, then according to the position of groove depth positioning line cutting self-locking frame, again embedding the locating block of self-locking frame bottom in positioning groove, self-locking frame bottom enters self-locking groove, finally lock screw is screwed into bolt inside, complete the locking and fixing of overall structure, realized the integration of tension adjustment and self-locking function, improved self-locking reliability, effectively resist vibration, impact and other working condition influence.

Description

Technical Field

[0001] This utility model relates to the technical field of mechanical connection, and in particular to a tension adjusting bolt with self-locking function. Background Technology

[0002] Bolts, as the most basic and widely used core component in the field of mechanical connection, are widely used in many key industries such as construction engineering, rail transportation, aerospace, petrochemicals, and heavy machinery due to their advantages such as simple structure, reliable connection, and convenient assembly and disassembly.

[0003] In practical use, bolts not only need to achieve rigid connection between components, but also often need to be precisely adjusted according to assembly requirements to ensure the stability and load-bearing performance of the connection structure. Traditional tension adjusting bolts are prone to relative slippage between threaded pairs due to the influence of complex working conditions such as vibration, impact, temperature cycle changes and load fluctuations during long-term use. This can lead to bolt loosening, directly destroying the stability of the connection structure, reducing the overall accuracy and operational reliability of the equipment, and even causing major safety hazards.

[0004] To address this issue, a tension adjusting bolt with a self-locking function is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a tension adjusting bolt with a self-locking function, which aims to improve the problem in the prior art where relative slippage between threaded pairs easily occurs due to complex working conditions such as vibration, impact, temperature cycle changes and load fluctuations, leading to bolt loosening.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tension adjusting bolt with self-locking function includes a bolt, a nut threadedly connected to the surface of the bolt, self-locking grooves formed at the four corners of the bottom of the nut, a positioning groove formed at the top of the bolt, a positioning block disposed inside the positioning groove, a self-locking frame fixedly connected to the top of the positioning block, the bottom of the self-locking frame extending into the interior of the self-locking groove, a locking screw disposed at the top of the self-locking frame, the bottom of the locking screw passing through the self-locking frame and the positioning block in sequence and threadedly connected to the interior of the bolt, and auxiliary locking components disposed on both sides of the top of the nut;

[0008] As a further description of the above technical solution:

[0009] The auxiliary locking assembly includes a vertical plate, which is slidably connected inside the self-locking groove. A Torx screw is threaded inside the vertical plate, and a pressure plate is movably connected to the surface of the Torx screw. A slide rod assembly is fixedly installed on the surface of the pressure plate, and the slide rod assembly is slidably connected inside the vertical plate. A rubber plate is fixedly installed on the surface of the pressure plate, and the surface of the rubber plate is in contact with the surface of the bolt.

[0010] As a further description of the above technical solution:

[0011] A connecting plate is fixedly connected to the surface of the vertical plate, and the connecting plate is sleeved on the surface of the self-locking frame.

[0012] As a further description of the above technical solution:

[0013] The surface of the nut is provided with a groove depth positioning line, which is horizontally aligned with the bottom of the inner wall of the self-locking groove.

[0014] As a further description of the above technical solution:

[0015] Quick-access handles are fixedly installed at the four corners of the top of the connecting plate;

[0016] As a further description of the above technical solution:

[0017] The bottom sides of both sides of the vertical plate are provided with mounting grooves on the front and rear sides. Positioning springs are fixedly installed inside the mounting grooves, and the surface of the positioning springs is in contact with the inner wall of the self-locking groove.

[0018] As a further description of the above technical solution:

[0019] A rubber support block assembly is fixedly installed inside the self-locking frame, and the surface of the rubber support block assembly is in contact with the surface of the bolt.

[0020] As a further description of the above technical solution:

[0021] Both sides of the self-locking frame are fixedly installed with arc-shaped protective plate assemblies, and the bolts are located inside the arc-shaped protective plate assemblies.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the nut is threaded onto the bolt surface and adjusted to the position corresponding to the required tension. Then, the self-locking frame is cut according to the position of the groove depth positioning line. The positioning block at the bottom of the self-locking frame is then embedded into the positioning groove, and the bottom of the self-locking frame enters the self-locking groove. Finally, the locking screw is screwed into the bolt to complete the locking and fixing of the overall structure. This realizes the integration of tension adjustment and self-locking function, improves the reliability of self-locking, and effectively resists the influence of working conditions such as vibration and impact.

[0024] 2. In this utility model, before the self-locking frame is installed, the vertical plate is slidably embedded into the self-locking groove to achieve initial positioning of the vertical plate and the self-locking groove. Then, the plum-shaped screw is tightened to push the pressure plate along the guide direction of the slide rod group towards the bolt until the pressure plate drives the rubber plate to make close contact with the bolt surface and form stable pressure. This achieves the effect of absorbing impact energy when the bolt is vibrated, and at the same time, the large coefficient of friction between rubber and metal further restricts the relative movement of the bolt and nut. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a tension adjusting bolt with a self-locking function proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the positioning groove of a tension adjusting bolt with self-locking function proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the nut of a tension adjusting bolt with self-locking function proposed in this utility model.

[0028] Figure 4 This is a schematic diagram of the structure of a connecting plate with a tension adjusting bolt having a self-locking function, as proposed in this utility model.

[0029] Figure 5 This is a schematic diagram of the positioning spring of a tension adjusting bolt with self-locking function proposed in this utility model;

[0030] Figure 6 This is a schematic diagram of the structure of a self-locking bracket for a tension adjusting bolt with a self-locking function proposed in this utility model.

[0031] Legend:

[0032] 1. Bolt; 2. Nut; 3. Self-locking groove; 4. Positioning groove; 5. Positioning block; 6. Self-locking frame; 7. Locking screw; 8. Vertical plate; 9. Torx screw; 10. Pressure plate; 11. Slide rod assembly; 12. Rubber plate; 13. Connecting plate; 14. Groove depth positioning line; 15. Quick-release handle; 16. Mounting groove; 17. Positioning spring; 18. Rubber support block assembly; 19. Arc-shaped protective plate assembly. Detailed Implementation

[0033] 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.

[0034] Reference Figure 1-3 This utility model provides an embodiment of a tension adjusting bolt with a self-locking function, comprising a bolt 1, a nut 2 threadedly connected to the surface of the bolt 1, a groove depth positioning line 14 formed on the surface of the nut 2, the groove depth positioning line 14 being horizontally aligned with the bottom of the inner wall of the self-locking groove 3. Self-locking grooves 3 are formed at the four corners of the bottom of the nut 2, a positioning groove 4 is formed at the top of the bolt 1, a positioning block 5 is provided inside the positioning groove 4, a self-locking frame 6 is fixedly connected to the top of the positioning block 5, the bottom of the self-locking frame 6 extends into the interior of the self-locking groove 3, a locking screw 7 is provided at the top of the self-locking frame 6, and the bottom of the locking screw 7 passes through the self-locking frame 6 and the positioning block 5 sequentially and is threadedly connected to the interior of the bolt 1.

[0035] Specifically, the precise alignment between the groove depth positioning line 14 and the self-locking groove 3 effectively solves the problem of difficulty in controlling the cutting size of the self-locking frame 6, providing a direct basis for the full adaptation of the self-locking frame 6 and the self-locking groove 3, and avoiding self-locking failure due to dimensional deviation; the self-locking frame 6 is made of high-quality carbon structural steel No. 45 and is heat-treated, which can take into account sufficient strength and processing performance, ensuring dimensional stability after cutting, and directly blocking the relative sliding between the nut 2 and the bolt 1 from the mechanical structure.

[0036] Reference Figure 3-5 Auxiliary locking components are provided on both sides of the top of nut 2. Each auxiliary locking component includes a vertical plate 8, which is slidably connected inside the self-locking groove 3. A Torx screw 9 is threaded inside the vertical plate 8, and a pressure plate 10 is movably connected to the surface of the Torx screw 9. A slide rod assembly 11 is fixedly installed on the surface of the pressure plate 10, and the slide rod assembly 11 is slidably connected inside the vertical plate 8. A rubber plate 12 is fixedly installed on the surface of the pressure plate 10, and the surface of the rubber plate 12 contacts the surface of bolt 1. A connecting plate 13 is fixedly connected to the surface of the vertical plate 8, and the connecting plate 13 is fitted onto the surface of the self-locking frame 6. Quick-release handles 15 are fixedly installed at the four corners of the top of the connecting plate 13.

[0037] Specifically, the connecting plate 13 is not only the connecting carrier of the vertical plate 8, but its sleeve cooperation with the self-locking frame 6 can also limit the overall displacement of the auxiliary locking component, so that the forces on both sides of the vertical plate 8 are balanced and the structural stability is enhanced. The quick-access handle 15 adopts a humanized design, providing a convenient force application point for the pick-up, put-down and installation of the auxiliary locking component, effectively improving assembly efficiency and avoiding the inconvenience of operation caused by direct hand contact with the parts.

[0038] Reference Figure 3-5Mounting grooves 16 are provided on the front and rear sides of the bottom of both sides of the vertical plate 8. Positioning springs 17 are fixedly installed inside the mounting grooves 16, and the surface of the positioning springs 17 contacts the inner wall of the self-locking groove 3. Rubber support block assemblies 18 are fixedly installed inside the self-locking frame 6, and the surface of the rubber support block assemblies 18 contacts the surface of the bolts 1. Arc-shaped protective plate assemblies 19 are fixedly installed on both sides of the self-locking frame 6, and the bolts 1 are located inside the arc-shaped protective plate assemblies 19.

[0039] Specifically, the positioning spring 17 is made of elastic metal. After entering the self-locking groove 3, it is compressed and undergoes elastic deformation. Through the reaction force, it tightly adheres to the groove wall to complete the pre-positioning of the component. At the same time, it cooperates with the self-locking frame 6 fitted on the connecting plate 13 to form a double limit. The rubber support block group 18 is an internal structure of the self-locking frame 6. Through flexible contact with the surface of the bolt 1, it provides uniform support force for the self-locking frame 6, enhancing its structural stability. It can also absorb some vibration energy by utilizing the damping characteristics of rubber, thus helping to improve the anti-loosening effect. The arc-shaped protective plate group 19 adopts an arc-shaped structure that is compatible with the bolt 1. It can protect the bolt 1 from collision and reinforce the connection of the self-locking frame 6, extending the service life of the component.

[0040] Working principle: First, screw nut 2 onto the surface of bolt 1. Using a tension testing tool, rotate nut 2 to the preset tension value. Based on the groove depth positioning line 14, which is flush with the bottom of the self-locking groove 3, use a cutting tool to precisely cut the self-locking frame 6, ensuring that the bottom of the self-locking frame 6 can be completely embedded in the self-locking groove 3 after cutting. Then, hold the auxiliary locking component with the quick-release handle 15, align the vertical plate 8 with the top of the self-locking groove 3 of nut 2, and push it in. The elastic deformation of the positioning spring 17 makes the vertical plate 8 fit tightly against the groove wall to achieve pre-positioning. Tighten the plum-shaped screw 9 with a tool, push the pressure plate 10 under the guidance of the slide rod group 11 to drive the rubber plate 12 to press the surface of the bolt 1; finally, align the positioning block 5 at the bottom of the self-locking frame 6 with the positioning groove 4 and insert it, so that the bottom of the self-locking frame 6 is stably locked into the self-locking groove 3. Then, insert the locking screw 7 from the top of the self-locking frame 6, pass through the self-locking frame 6 and the positioning block 5 in sequence, screw it into the bolt 1 and tighten it. At the same time, the connecting plate 13 is fitted onto the self-locking frame 6 to form a secondary limit. This completes the installation and locking of the entire bolt 1. Disassembly can be performed by reversing the operation.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tension adjusting bolt with self-locking function, comprising a bolt (1), characterized in that: The bolt (1) is threaded with a nut (2). The nut (2) has self-locking grooves (3) at the four corners of its bottom. The bolt (1) has a positioning groove (4) at its top. The positioning groove (4) has a positioning block (5) inside it. The positioning block (5) has a self-locking frame (6) fixedly connected to its top. The bottom of the self-locking frame (6) extends into the self-locking groove (3). The self-locking frame (6) has a locking screw (7) at its top. The bottom of the locking screw (7) passes through the self-locking frame (6) and the positioning block (5) in sequence and is threaded into the bolt (1). The nut (2) has auxiliary locking components on both sides of its top.

2. The tension adjusting bolt with self-locking function according to claim 1, characterized in that: The auxiliary locking assembly includes a vertical plate (8), which is slidably connected inside the self-locking groove (3). The vertical plate (8) is threaded with a plum blossom screw (9), and a pressure plate (10) is movably connected to the surface of the plum blossom screw (9). A slide rod assembly (11) is fixedly installed on the surface of the pressure plate (10), and the slide rod assembly (11) is slidably connected inside the vertical plate (8). A rubber plate (12) is fixedly installed on the surface of the pressure plate (10), and the surface of the rubber plate (12) is in contact with the surface of the bolt (1).

3. A tension adjusting bolt with self-locking function according to claim 2, characterized in that: A connecting plate (13) is fixedly connected to the surface of the vertical plate (8), and the connecting plate (13) is sleeved on the surface of the self-locking frame (6).

4. A tension adjusting bolt with self-locking function according to claim 1, characterized in that: The surface of the nut (2) is provided with a groove depth positioning line (14), which is horizontally aligned with the bottom of the inner wall of the self-locking groove (3).

5. A tension adjusting bolt with self-locking function according to claim 3, characterized in that: Quick-access handles (15) are fixedly installed at the four corners of the top of the connecting plate (13).

6. A tension adjusting bolt with self-locking function according to claim 2, characterized in that: The vertical plate (8) has mounting grooves (16) on the front and rear sides of its bottom sides. A positioning spring (17) is fixedly installed inside the mounting groove (16), and the surface of the positioning spring (17) is in contact with the inner wall of the self-locking groove (3).

7. A tension adjusting bolt with self-locking function according to claim 1, characterized in that: The self-locking frame (6) is internally fixed with a rubber support block assembly (18), the surface of which is in contact with the surface of the bolt (1).

8. A tension adjusting bolt with self-locking function according to claim 1, characterized in that: Both sides of the self-locking frame (6) are fixedly installed with arc-shaped protective plate groups (19), and the bolt (1) is located inside the arc-shaped protective plate group (19).

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