Anti-loosening bolt

Abstract

The utility model discloses an anti-loosening bolt, which relates to the field of bolts, and comprises a nut, the bottom of the nut is fixedly connected with a screw rod, the outer wall of the screw rod is in threaded connection with a nut, through the arrangement of a fastening assembly, threaded strips in a connecting sleeve and a fastening sleeve can be in threaded engagement with threaded grooves, and then second thread engagement is formed. The two threaded contact surfaces are mutually restrained, twisting force needed by loosening is remarkably increased, by arranging the maintenance assembly, a pressing block and a sliding rod can be pressed to push an extrusion block to move, lubricating oil in an oil storage groove is extruded into a bolt thread gap, rapid and accurate lubricating operation is achieved, the bolt does not need to be disassembled, and the service life of the bolt is prolonged; by arranging the dustproof assembly, the overturning cover can be clamped and sealed with the oil storage tank through the clamping strip and the semicircular block, impurities such as dust, sand grains and water are effectively prevented from entering the oil storage tank, lubricating oil is prevented from being polluted or blocked, and long-term effectiveness of a lubricating system is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology, and in particular to an anti-loosening bolt. Background Technology

[0002] Bolt: A mechanical part, a cylindrical threaded fastener that is fitted with a nut. It is a type of fastener consisting of a nut and a thread. It needs to be used with a nut to fasten two parts with through holes. This type of connection is called a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated. Therefore, a bolted connection is a detachable connection.

[0003] However, after the bolt assembly is tightened, the movement of the components can easily cause it to loosen, especially in high-speed vehicles and continuously running machinery. During long-term operation, the machinery will generate varying degrees of vibration, which can easily cause the bolts to loosen or even fall off. If the fastening bolts of the running machinery become loose and fall off, it could very likely affect the safety of personnel. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the problems existing in the prior art, this utility model provides an anti-loosening bolt.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: an anti-loosening bolt, including a nut, a screw rod fixedly connected to the bottom of the nut, a nut threadedly connected to the outer wall of the screw rod, a fastening component for preventing the nut from loosening provided on the outer wall of the screw rod, and a maintenance component for preventing the screw rod from rusting provided on the top of the nut;

[0008] A fastening assembly includes a connecting sleeve fixedly connected to the bottom of a nut, the connecting sleeve having a threaded groove inside, a fastening sleeve fixedly connected to the top of the nut, and a threaded strip fixedly connected to the outer wall of the fastening sleeve, the threaded strip engaging with the threaded groove.

[0009] The maintenance component includes symmetrically arranged oil reservoirs on the top of the nut, an oil outlet on the inner side of the oil reservoir, a pressing block slidably connected inside the oil reservoir, a locking hole on the outer wall of the nut, a sliding rod slidably connected inside the locking hole, one end of the sliding rod being fixedly connected to the outer wall of the pressing block, and a pressing block being fixedly connected to the other end of the sliding rod, a limiting spring being sleeved on the outer wall of the sliding rod, and a dustproof component on the top of the nut to prevent dust from entering the oil reservoir.

[0010] In a preferred embodiment of the anti-loosening bolt of this utility model, the diameter of the connecting sleeve is larger than the diameter of the fastening sleeve, and the connecting sleeve is fitted on the outside of the fastening sleeve.

[0011] As a preferred embodiment of the anti-loosening bolt of this utility model, the top of the nut is provided with a groove, a round block is fixedly connected inside the groove, and the top of the round block is provided with a plum blossom groove.

[0012] In a preferred embodiment of the anti-loosening bolt of this utility model, one end of the limiting spring is fixedly connected to the inside of the locking hole, and the other end of the limiting spring is fixedly connected to the outer wall of the slide rod.

[0013] In a preferred embodiment of the anti-loosening bolt of this utility model, a first inclined side is provided on the inner side of the oil storage tank, and a second inclined side is provided on the outer wall of the extrusion block, wherein the first inclined side and the second inclined side are in extrusion contact.

[0014] As a preferred embodiment of the anti-loosening bolt of this utility model, anti-slip textures are provided at equal intervals on the sides of the two pressing blocks that are far apart from each other.

[0015] As a preferred embodiment of the anti-loosening bolt of this utility model, the dustproof component includes a flip cover symmetrically connected to the top of the nut by a pivot pin. A retaining strip is fixedly connected to the outer wall of the flip cover, and a semi-circular block is fixedly connected to the outer wall of the retaining strip. The semi-circular block is engaged with the inner side of the oil reservoir.

[0016] (III) Beneficial Effects

[0017] This utility model provides an anti-loosening bolt. It has the following beneficial effects:

[0018] 1. By setting fastening components, the threaded strip in the connecting sleeve and the fastening sleeve can engage with the threaded groove, thereby forming a second thread engagement. The two threaded contact surfaces restrain each other, significantly increasing the torsional force required for loosening.

[0019] 2. By setting up the maintenance component, pressing the pressing block and sliding the sliding rod can push the extrusion block to move, squeezing the lubricating oil in the oil reservoir into the bolt thread gap, realizing a fast and precise lubrication operation without disassembling the bolt and extending the bolt service life;

[0020] 3. By setting up dustproof components, the flip cover can form a snap-fit ​​seal with the oil reservoir through the locking strip and semi-circular block, effectively preventing dust, sand, moisture and other impurities from entering the oil reservoir, avoiding lubricating oil contamination or blockage, and ensuring the long-term effectiveness of the lubrication system. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the screw structure of this utility model.

[0024] Figure 3 This is a structural schematic diagram of the nut of this utility model.

[0025] Figure 4 This is a structural schematic diagram of the connecting sleeve of this utility model.

[0026] Figure 5 This is a schematic diagram of the structure of the maintenance component of this utility model.

[0027] Figure 6 This is a structural schematic diagram of the dustproof component of this utility model.

[0028] In the diagram, 1. Nut; 2. Screw; 3. Nut; 4. Fastening assembly; 401. Connecting sleeve; 402. Threaded groove; 403. Fastening sleeve; 404. Threaded strip; 5. Maintenance assembly; 501. Oil reservoir; 502. Oil outlet; 503. Pressing block; 504. Locking hole; 505. Slide rod; 506. Pressing block; 507. Limiting spring; 508. First bevel; 509. Second bevel; 6. Dustproof assembly; 601. Flip cover; 602. Locking strip; 603. Semicircular block; 7. Groove; 8. Round block; 9. Plum blossom groove. Detailed Implementation

[0029] 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.

[0030] Example 1

[0031] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4This is the first embodiment of the present invention. This embodiment provides an anti-loosening bolt, including a nut 1, a screw 2 fixedly connected to the bottom of the nut 1, a nut 3 threadedly connected to the outer wall of the screw 2, a fastening component 4 for preventing the nut 3 from loosening on the outer wall of the screw 2, and a maintenance component 5 for preventing the screw 2 from rusting on the top of the nut 1. The fastening component 4 includes a connecting sleeve 401 fixedly connected to the bottom of the nut 1, a threaded groove 402 opened inside the connecting sleeve 401, a fastening sleeve 403 fixedly connected to the top of the nut 3, and a threaded strip 404 fixedly connected to the outer wall of the fastening sleeve 403. The threaded strip 404 engages with the threaded groove 402.

[0032] Specifically, the diameter of the connecting sleeve 401 is larger than that of the fastening sleeve 403. The connecting sleeve 401 is fitted on the outside of the fastening sleeve 403. The top of the nut 1 has a groove 7, and a round block 8 is fixedly connected inside the groove 7. The top of the round block 8 has a plum blossom groove 9.

[0033] Furthermore, when tightening the bolt, the nut 3 is fixed by using a wrench, and then the Torx groove 9 is rotated by using a screwdriver. The Torx groove 9 drives the round block 8 to rotate, the round block 8 drives the groove 7 to rotate, the groove 7 drives the nut 1 to rotate, and then drives the screw 2 to rotate, thereby driving the connecting sleeve 401 to rotate. Then the connecting sleeve 401 drives the thread groove 402 to slide on the outer wall of the threaded strip 404 until it is fixed. That is, the fixing of the connecting sleeve 401 and the fastening sleeve 403 is completed, and the fixing of the screw 2 and the nut 3 is also completed, thus forming a second thread engagement, so that the two threaded contact surfaces restrain each other, significantly increasing the torsional force required for loosening.

[0034] Example 2

[0035] Reference Figure 1 , Figure 4 , Figure 5 and Figure 6 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The maintenance component 5 includes an oil storage tank 501 symmetrically opened on the top of the nut 1. An oil outlet 502 is provided on the inner side of the oil storage tank 501. A pressing block 503 is slidably connected inside the oil storage tank 501. A locking hole 504 is opened on the outer wall of the nut 1. A sliding rod 505 is slidably connected inside the locking hole 504. One end of the sliding rod 505 is fixedly connected to the outer wall of the pressing block 503. A pressing block 506 is fixedly connected to the other end of the sliding rod 505. A limiting spring 507 is sleeved on the outer wall of the sliding rod 505. A dustproof component 6 is provided on the top of the nut 1 to prevent dust from entering the oil storage tank 501.

[0036] Specifically, one end of the limiting spring 507 is fixedly connected to the inside of the locking hole 504, and the other end of the limiting spring 507 is fixedly connected to the outer wall of the slide bar 505. The inner side of the oil storage tank 501 is provided with a first inclined side 508, and the outer wall of the pressing block 503 is provided with a second inclined side 509. The first inclined side 508 and the second inclined side 509 are in pressing contact. The two pressing blocks 506 are provided with anti-slip textures at equal intervals on the sides that are far apart from each other. The dustproof component 6 includes a flip cover 601 that is symmetrically connected to the top of the nut 1 by a shaft pin. The outer wall of the flip cover 601 is fixedly connected with a retaining strip 602, and the outer wall of the retaining strip 602 is fixedly connected with a semi-circular block 603. The semi-circular block 603 is engaged with the inner side of the oil storage tank 501.

[0037] Furthermore, when the bolts need maintenance, by flipping the flip cover 601, the retaining strip 602 slides out of the oil reservoir 501. Then, after placing the lubricating grease in the oil reservoir 501, pressing the pressing block 506 causes the sliding rod 505 to slide while squeezing the limiting spring 507. In turn, the sliding rod 505 causes the squeezing block 503 to slide. The squeezing block 503 causes the first inclined edge 508 to slide while squeezing the lubricating grease until the first inclined edge 508 and the second inclined edge 509 come into contact. At this time, the lubricating grease enters the bolt thread gap through the oil outlet 502, achieving a fast and precise lubrication operation. Then, the pressing block 506 is released, and the squeezing force of the limiting spring 507 causes the squeezing block 503 to return to its initial position.

[0038] Working principle: When tightening the bolt, the nut 3 is fixed by using a wrench, and then the Torx groove 9 is rotated by using a screwdriver. The Torx groove 9 drives the round block 8 to rotate, the round block 8 drives the groove 7 to rotate, the groove 7 drives the nut 1 to rotate, and then drives the screw 2 to rotate, thereby driving the connecting sleeve 401 to rotate. Then the connecting sleeve 401 drives the thread groove 402 to slide on the outer wall of the thread strip 404 until it is fixed. That is, the fixing of the connecting sleeve 401 and the fastening sleeve 403 is completed, and the fixing of the screw 2 and the nut 3 is also completed. This forms a second thread engagement, so that the two thread contact surfaces restrain each other, significantly increasing the torsional force required for loosening.

[0039] When bolt maintenance is required, flipping the cover 601 causes the retaining strip 602 to slide out of the oil reservoir 501. Lubricating grease is then placed in the reservoir 501. Pressing the pressing block 506 causes the sliding rod 505 to slide, simultaneously squeezing the limiting spring 507. The sliding rod 505 then causes the pressing block 503 to slide. The pressing block 503, in turn, causes the first inclined edge 508 to slide, squeezing the lubricating grease until the first inclined edge 508 contacts the second inclined edge 509. At this point, the lubricating grease enters the bolt thread gap through the oil outlet 502, achieving rapid and precise lubrication. Releasing the pressing block 506 then causes the pressing block 503 to return to its initial position, as the force of the squeezed limiting spring 507 returns it to its original position.

[0040] It should be noted that in this paper, relational terms such as first and second are used only 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.

Claims

1. A loosening-preventing bolt, comprising a screw cap (1), a screw rod (2) fixedly connected at the bottom of the screw cap (1), and a nut (3) threadedly connected to the outer wall of the screw rod (2), characterized in that: The outer wall of the screw rod (2) is provided with a fastening assembly (4) for preventing the nut (3) from loosening, and the top of the screw cap (1) is provided with a maintenance assembly (5) for preventing the screw rod (2) from rusting. The fastening assembly (4) comprises a connecting sleeve (401) fixedly connected to the bottom of the screw cap (1), a threaded groove (402) is formed in the inner part of the connecting sleeve (401), a fastening sleeve (403) is fixedly connected to the top of the nut (3), a threaded strip (404) is fixedly connected to the outer wall of the fastening sleeve (403), and the threaded strip (404) is in meshing connection with the threaded groove (402). The maintenance assembly (5) comprises oil storage grooves (501) symmetrically formed in the top of the screw cap (1), an oil outlet (502) is arranged on the inner side of the oil storage groove (501), an extrusion block (503) is slidably connected in the inner part of the oil storage groove (501), a locking hole (504) is formed in the outer wall of the screw cap (1), a sliding rod (505) is slidably connected in the inner part of the locking hole (504), one end of the sliding rod (505) is fixedly connected to the outer wall of the extrusion block (503), the other end of the sliding rod (505) is fixedly connected to a pressing block (506), a limiting spring (507) is sleeved on the outer wall of the sliding rod (505), and a dustproof assembly (6) is arranged on the top of the screw cap (1) to prevent dust from entering the oil storage groove (501).

2. A tamperproof bolt according to claim 1 wherein: The diameter of the connecting sleeve (401) is greater than the diameter of the fastening sleeve (403), and the connecting sleeve (401) is sleeved on the outer side of the fastening sleeve (403).

3. The anti-loosening bolt according to claim 1, wherein: A recess (7) is formed in the top of the screw cap (1), a circular block (8) is fixedly connected in the inner part of the recess (7), and a keyway (9) is formed in the top of the circular block (8).

4. The anti-loosening bolt according to claim 1, wherein: One end of the limiting spring (507) is fixedly connected to the inner part of the locking hole (504), and the other end of the limiting spring (507) is fixedly connected to the outer wall of the sliding rod (505).

5. The anti-loosening bolt according to claim 1, wherein: A first inclined edge (508) is arranged on the inner side of the oil storage groove (501), a second inclined edge (509) is arranged on the outer wall of the extrusion block (503), and the first inclined edge (508) is in extrusion contact with the second inclined edge (509).

6. The anti-loosening bolt according to claim 1, wherein: Anti-skid lines are equidistantly formed on the sides of the pressing blocks (506) away from each other.

7. The anti-loosening bolt according to claim 1, wherein: The dustproof assembly (6) comprises flip covers (601) symmetrically rotatably connected to the top of the screw cap (1) through shaft pins, clamping strips (602) are fixedly connected to the outer wall of the flip covers (601), semicircular blocks (603) are fixedly connected to the outer wall of the clamping strips (602), and the semicircular blocks (603) are clamped to the inner side of the oil storage groove (501).

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