Flange toothed bolt

Abstract

The utility model relates to the field of fastener discloses a flange toothed bolt, the anti -looseness subassembly includes the washer A and washer B of setting in the stud, the several sharp cones of fixed setting below washer A and above washer B, the bottom ring of fixed setting below washer B, the limit block, screw, washer A is located above washer B, washer B is located above the nut, washer A is fixedly connected with the screw head, the bottom wall of bottom ring is provided with the slot A, the outside wall of bottom ring is provided with the screw hole that communicates with the slot A, the top wall of nut is provided with the slot B, the limit block top and bottom respectively insert the slot A and the slot B and the bottom ring and the nut contact connection, and the screw is screwed into the screw hole and is rotatably connected with the limit block. The utility model has the beneficial effects of reusable and high applicability, solves the problem that the existing flange toothed bolt cannot be reused, and if the contact surface is uneven, the ratchet tooth cannot be completely embedded, which can cause the problem of the decline of the anti-looseness performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastener technical field, concretely relates to a flange toothed bolt. BACKGROUND

[0002] The flange toothed bolt is a mechanical fastener specially designed for high anti-loosening requirement, and its core feature is that ratchets are arranged at the bottom of the screw head and the top of the nut. During installation, the ratchets and the mechanical interlocking of the part contact surface are used to significantly improve the anti-vibration and anti-loosening capability, and the flange toothed bolt is widely used in high-temperature, high-pressure and strong-vibration industrial scenes.

[0003] The existing flange toothed bolt usually has the following defects during use: when disassembled, the ratchets and the part contact surface are extruded, and after disassembly, the ratchets are deformed or excessively worn, the anti-loosening performance is reduced during reinstallation, new bolts need to be replaced, and the bolts cannot be reused; the part contact surface has certain requirements, if the contact surface is uneven, the ratchets cannot be completely embedded, and the anti-loosening performance is reduced. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a flange toothed bolt to solve the problems in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a flange toothed bolt, comprising a stud, a screw head fixedly arranged at the top end of the stud, and a nut located below the screw head, wherein the nut is screwed into the stud and is connected with the stud through threads, an anti-loosening assembly is arranged on the screw head and the nut, the anti-loosening assembly comprises a washer A and a washer B sleeved on the stud, a plurality of sharp cones fixedly arranged below the washer A and above the washer B, a bottom washer fixedly arranged below the washer B, a limiting block, and a screw, the washer A is located above the washer B, the washer B is located above the nut, the washer A is fixedly connected with the screw head, a slot A is formed in the bottom wall of the bottom washer, a screw hole in communication with the slot A is formed in the outer side wall of the bottom washer, a slot B is formed in the top wall of the nut, the top and bottom of the limiting block are inserted into the slot A and the slot B respectively, and the limiting block is in contact connection with the bottom washer and the nut, and the screw is screwed into the screw hole and is in rotational connection with the limiting block.

[0006] Preferably, the anti-loosening assembly further comprises a spring, a ring groove is formed in the top wall of the nut, the spring is located inside the ring groove, and the upper and lower ends of the spring are in abutting connection with the bottom washer and the nut respectively.

[0007] Preferably, a horizontal bar is fixedly arranged above the washer A, a horizontal groove matched with the horizontal bar is formed in the bottom wall of the screw head, and the horizontal bar is inserted into the horizontal groove and is in interference fit connection with the screw head.

[0008] Preferably, a turntable is fixedly connected to one end of the screw near the limiting block. The diameter of the turntable is larger than the diameter of the screw. A T-shaped groove is formed on the side wall of the limiting block near the screw. The screw and the turntable are located in the T-shaped groove and are rotatably connected to the limiting block.

[0009] Preferably, the stud, screw head, and nut are all provided with a zinc-impregnated coating.

[0010] Preferably, the material of the pointed cone is chromium-molybdenum alloy steel.

[0011] Preferably, the spring is a rectangular spring.

[0012] The beneficial effects of this utility model are as follows: the nut's rotation is restricted by the limiting block and the pointed cone on the washer B embedded in the part, and the screw head's rotation is restricted by the crossbar and the pointed cone on the washer A embedded in the part, thus providing anti-vibration and anti-loosening capabilities; when the bolt needs to be disassembled, rotating the screw drives the limiting block to move within the slot A, moving it to the outside of the nut, and then unscrewing the nut to remove it. When the nut is unscrewed, it does not drive the stud and the bottom ring to rotate, so the pointed cone will not squeeze against the part during disassembly. Then, prying the washers A and B can separate the pointed cone from the part, which avoids deformation or excessive wear of the pointed cone. When reinstalling, the pointed cone can be offset from its original installation position and re-embedded in the part for installation without replacing the bolt, thus achieving reusability; when the contact surface of the part is uneven, since the pointed cone is vertically embedded, unlike the traditional ratchet rotation embedding, the flatness of the contact surface of the part has little impact on the embedded part of the pointed cone, thus enhancing its applicability; in summary, this utility model has the beneficial effects of reusability and high applicability. Attached Figure Description

[0013] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Appendix Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0015] Appendix Figure 3 This is a schematic diagram of the bottom structure during disassembly of this utility model;

[0016] Appendix Figure 4 This is a top view of the present invention;

[0017] Appendix Figure 5 For the appendix Figure 4 Sectional view at point AA.

[0018] In the diagram: 1. Stud; 2. Screw head; 3. Nut; 4. Washer A; 5. Washer B; 6. Taper; 7. Bottom ring; 8. Limiting block; 9. Screw; 10. Slot A; 11. Slot B; 12. Screw hole; 13. Spring; 14. Ring groove; 15. Horizontal bar; 16. Horizontal groove; 17. Turntable; 18. T-slot. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] like Figures 1-5As shown, this utility model discloses a flange toothed bolt, including a stud 1, a screw head 2 fixedly disposed at the top of the stud 1, and a nut 3 located below the screw head 2. The nut 3 is screwed into the stud 1 and threadedly connected to the stud 1. The screw head 2 and the nut 3 are provided with anti-loosening components. The anti-loosening components include washers A4 and B5 sleeved on the stud 1, a plurality of pointed cones 6 fixedly disposed below washer A4 and above washer B5, a bottom ring 7 fixedly disposed below washer B5, a limiting block 8, and a screw 9. The washer A4 is located above the washer B5, the washer B5 is located above the nut 3, the washer A4 is fixedly connected to the screw head 2, the bottom wall of the bottom ring 7 has a slot A10, the outer wall of the bottom ring 7 has a screw hole 12 communicating with the slot A10, the top wall of the nut 3 has a slot B11, the top and bottom of the limiting block 8 are inserted into the slot A10 and the slot B11 respectively and are in contact with the bottom ring 7 and the nut 3, and the screw 9 is screwed into the screw hole 12 and is rotatably connected to the limiting block 8.In use, the washer A4 is fitted onto the stud 1, the crossbar 15 is aligned and inserted into the cross groove 16, so that the crossbar 15 and the screw head 2 are interference-fitted. The stud 1 is passed through the mounting hole on the part to be locked, so that the pointed cone 6 on the washer A4 presses against the top wall of the part, and the bottom end of the stud 1 extends out of the mounting hole and is located below the part. The washer B5 and the bottom ring 7 are fitted onto the stud 1, and the nut 3 is screwed into the stud 1 and threadedly connected to the stud 1. The screw 9 is rotated to move the limiting block 8 in the slot A10, so that it moves to the outside of the nut 3. The nut 3 is rotated to make it contact and connect with the bottom ring 7, so that the pointed cone 6 on the washer B5 presses against the bottom wall of the part. The bottom ring 7 is rotated to make it contact and connect with the bottom ring 7. Ring 7 offsets slot A10 from slot B11, leaving space for slot A10 to align with slot B11 after nut 3 is tightened. Tightening nut 3 causes it to press against bottom ring 7 and washer B5, causing the pointed cone 6 on washer B5 to embed into the bottom wall of the part. This also drives screw head 2 to press against washer A4, causing the pointed cone 6 on washer A4 to embed into the top wall of the part. After nut 3 is tightened, slot A10 and slot B11 are aligned. Rotating screw 9 moves limit block 8 within slot A10, causing the bottom of limit block 8 to insert into slot B11 and abut against nut 3. Nut 3's rotation is restricted by limit block 8 and the pointed cone 6 on washer B5 embedded in the part. Screw head 2 is connected by crossbar 1. The pointed cone 6 on washer A4, which is embedded in the part, restricts rotation and provides vibration resistance and prevents loosening. When the bolt needs to be removed, rotating screw 9 moves limit block 8 within slot A10, placing it outside nut 3. Nut 3 can then be unscrewed to remove it. Nut 3 does not rotate stud 1 or base ring 7 during unscrewing, so the pointed cone 6 will not press against the part during disassembly. Then, prying washers A4 and B5 separates the pointed cone 6 from the part, preventing deformation or excessive wear. For reinstallation, the pointed cone 6 is offset from its original position, allowing for re-embedding and installation of the part without replacement. The new bolt serves the purpose of reusability. When the contact surface of the part is uneven, the cone 6 is inserted vertically, unlike the traditional ratchet rotation insertion. The flatness of the contact surface has little impact on the insertion of the cone 6 into the part, thus enhancing its applicability. In summary, this utility model has the beneficial effects of reusability and high applicability, solving the problem that existing flange toothed bolts cause the ratchet to be squeezed against the contact surface of the part during disassembly, resulting in ratchet deformation or excessive wear after disassembly, making them unusable. It also has certain requirements for the contact surface of the part. If the contact surface is uneven, the ratchet cannot be fully inserted, which will lead to a decrease in anti-loosening performance.

[0021] Preferably, the anti-loosening component further includes a spring 13. An annular groove 14 is formed on the top wall of the nut 3, and the spring 13 is located inside the annular groove 14. The upper and lower ends of the spring 13 are respectively in contact with the bottom ring 7 and the nut 3. Because the upper and lower ends of the spring 13 are respectively in contact with the bottom ring 7 and the nut 3, when the nut 3 is tightened, the spring 13 is compressed into the annular groove 14. The spring 13 applies pressure to the nut 3, causing the threads of the nut 3 to abut against the threads of the stud 1, further preventing the nut 3 from loosening.

[0022] Preferably, a horizontal bar 15 is fixedly disposed above the washer A4, and a horizontal groove 16 matching the horizontal bar 15 is formed on the bottom wall of the screw head 2. The horizontal bar 15 is inserted into the horizontal groove 16 and is connected to the screw head 2 with an interference fit. Since the horizontal bar 15 is inserted into the horizontal groove 16 and is connected to the screw head 2 with an interference fit, it serves the function of a removable washer A4. If the cone 6 is damaged, the washer A4 can be removed and replaced.

[0023] Preferably, a turntable 17 is fixedly connected to one end of the screw 9 near the limiting block 8. The diameter of the turntable 17 is larger than the diameter of the screw 9. A T-shaped groove 18 is formed on the side wall of the limiting block 8 near the screw 9. The screw 9 and the turntable 17 are located in the T-shaped groove 18 and are rotatably connected to the limiting block 8. Since the screw 9 and the turntable 17 are located in the T-shaped groove 18 and are rotatably connected to the limiting block 8, it facilitates the movement of the limiting block 8. When the screw 9 is rotated, the limiting block 8 can move linearly within the slot A10.

[0024] Preferably, the stud 1, screw head 2, and nut 3 are all coated with a zinc-impregnated coating. This zinc-impregnated coating enhances the corrosion resistance of the stud 1, screw head 2, and nut 3.

[0025] Preferably, the material of the pointed cone 6 is chromium-molybdenum alloy steel. Because the pointed cone 6 is made of chromium-molybdenum alloy steel, it possesses characteristics such as high strength and high fatigue resistance.

[0026] Preferably, the spring 13 is a rectangular spring. Because the spring 13 is a rectangular spring, it has the characteristics of high stability and high load capacity.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 flange toothed bolt, comprising a stud (1), a screw head (2) fixedly disposed at the top of the stud (1), and a nut (3) located below the screw head (2), wherein the nut (3) is screwed into the stud (1) and threadedly connected to the stud (1), characterized in that: The screw head (2) and nut (3) are provided with anti-loosening components. The anti-loosening components include washers A (4) and B (5) sleeved on the stud (1), several pointed cones (6) fixedly set below washer A (4) and above washer B (5), a bottom ring (7) fixedly set below washer B (5), a limiting block (8), and a screw (9). Washer A (4) is located above washer B (5), and washer B (5) is located above nut (3). The bottom ring (7) is fixedly connected to the screw head (2). The bottom wall of the bottom ring (7) is provided with a slot A (10). The outer wall of the bottom ring (7) is provided with a screw hole (12) communicating with the slot A (10). The top wall of the nut (3) is provided with a slot B (11). The top and bottom of the limiting block (8) are respectively inserted into the slot A (10) and the slot B (11) and are in contact with the bottom ring (7) and the nut (3). The screw (9) is screwed into the screw hole (12) and is rotatably connected to the limiting block (8).

2. The flange toothed bolt according to claim 1, characterized in that: The anti-loosening component also includes a spring (13), and an annular groove (14) is provided on the top wall of the nut (3). The spring (13) is located inside the annular groove (14), and the upper and lower ends of the spring (13) are respectively in contact with the bottom ring (7) and the nut (3).

3. A flange toothed bolt according to claim 1, characterized in that: A horizontal bar (15) is fixedly installed above the washer A (4), and a horizontal groove (16) matching the horizontal bar (15) is opened on the bottom wall of the screw head (2). The horizontal bar (15) is inserted into the horizontal groove (16) and is connected to the screw head (2) with an interference fit.

4. A flange toothed bolt according to claim 1, characterized in that: A turntable (17) is fixedly connected to one end of the screw (9) near the limiting block (8). The diameter of the turntable (17) is larger than that of the screw (9). A T-shaped groove (18) is provided on the side wall of the limiting block (8) near the screw (9). The screw (9) and the turntable (17) are located in the T-shaped groove (18) and are rotatably connected to the limiting block (8).

5. A flange toothed bolt according to claim 1, characterized in that: The stud (1), screw head (2) and nut (3) are all coated with zinc.

6. A flange toothed bolt according to claim 1, characterized in that: The material of the pointed cone (6) is chromium-molybdenum alloy steel.

7. A flange toothed bolt according to claim 2, characterized in that: The spring (13) is a rectangular spring (13).

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