Anti-skidding and anti-vibration bolt assembly

Abstract

The utility model relates to the technical field of fasteners, in particular to an anti-skidding and anti-vibration bolt assembly which comprises a nut and a first screw, a second screw is arranged at the end, away from the nut, of the first screw, the spiral direction of the first screw is opposite to that of the second screw, and the second screw is sleeved with a limiting block. A locking device is arranged between the nut and the limiting block, a plurality of first protruding blocks are arranged on the surfaces of the two sides of the locking device, a plurality of first positioning grooves are formed in the surface of the side, close to the locking device, of the nut, and a plurality of second positioning grooves are formed in the surface of the side, close to the locking device, of the limiting block. According to the locking device, the limiting block is screwed, the locking block close to the limiting block moves in the direction close to the nut, the spring is compressed, then the locking block close to the nut is pushed to abut against the nut, when vibration occurs, the locking block abuts against the nut through the elastic force of the compression spring, and it is ensured that the nut and the first screw cannot slide relative to each other.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to an anti-slip and anti-vibration bolt assembly. Background Art

[0002] Bolt: A mechanical part, a cylindrical threaded fastener that is matched with a nut. A type of fastener consisting of a head and a screw (a cylinder with external threads), which must be matched with a nut to fasten two parts with through holes. This type of connection is called a bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.

[0003] For example, the authorization announcement number "CN215805637U" is named as an anti-slip and anti-vibration bolt assembly. Although the limit assembly is sleeved on the bolt screw, and the limit assembly does not produce circumferential rotation relative to the bolt screw, when in use, the limit column is slidably connected in the limit groove, which can prevent the limit assembly from rotating in the circumferential direction relative to the screw; the positioning block cooperates with the positioning hole to prevent the limit assembly from sliding axially relative to the bolt screw on the bolt screw. Since the limit assembly abuts against the side of the nut away from the bolt head, it can effectively prevent the bolt from being screwed out of the nut due to vibration. However, since the limit assembly is made of elastic material, when vibration occurs, the positioning block is easy to slide out of the axial direction of the positioning hole, and the positioning block and the positioning hole cannot play a stable axial limiting role, and the nut is at risk of sliding with the screw; since the limit assembly is made of elastic material, when vibration occurs, the limit column is easy to fall off from the circumferential direction of the limit groove, and the limit column and the limit groove cannot play a stable circumferential limiting role, and the nut is at risk of rotating circumferentially with the screw. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an anti-slip and anti-vibration bolt assembly.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An anti-slip and anti-vibration bolt assembly is designed, including a nut and a first screw, a first thread is provided on the surface of the first screw, a second screw is provided at an end of the first screw away from the nut, the diameter of the second screw is smaller than the first screw, a second thread is provided on the surface of the second screw, the first thread and the second thread have opposite spiral directions, a nut is sleeved on the outside of the first screw, the inner wall of the nut is threadedly connected to the first thread, a limit block is sleeved on the outside of the second screw, the inner wall of the limit block is threadedly connected to the second thread, a locking device is provided between the nut and the limit block, a first groove is provided on a side surface of the limit block close to the locking device, a plurality of first protrusions are provided on both side surfaces of the locking device, a plurality of first positioning grooves are provided on a side surface of the nut close to the locking device, the first positioning groove matches the first protrusion, a plurality of second positioning grooves are provided on a side surface of the limit block close to the locking device, and the second positioning groove matches the first protrusion.

[0007] Preferably, the locking device includes two locking blocks, the surfaces of the two locking blocks are provided with a first through hole, one end of the first screw rod passes through the two first through holes, a spring is provided between the two locking blocks, the spring is sleeved on the outside of the first screw rod, and a synchronous rotation component is provided between the two locking blocks.

[0008] Preferably, the synchronous rotation component includes a plurality of connecting blocks, one end of the connecting block is detachably connected to a surface of one side of the locking block, a plurality of connecting holes are provided on the surface of the locking block close to the limit block, the plurality of connecting holes correspond one-to-one to the plurality of connecting blocks, and one end of the connecting block passes through the connecting hole.

[0009] Preferably, a second groove is provided on a side surface of the nut close to the nut cap, a gasket is provided inside the second groove, a second through hole is provided on the surface of the gasket, and one end of the first screw rod passes through the second through hole.

[0010] Preferably, a plurality of second protrusions are provided on the inner wall of the second groove, a plurality of third positioning grooves are provided on a side surface of the gasket close to the second protrusions, the plurality of second protrusions correspond one-to-one to the plurality of third positioning grooves, and the second protrusions match the third positioning grooves.

[0011] Preferably, a plurality of third through holes are provided on the surface of the limit block, fixing bolts are provided inside the plurality of third through holes, a plurality of fixing grooves are provided in an annular shape on the surface of the second screw rod, and the fixing bolts are threadedly connected to the fixing grooves.

[0012] The anti-slip and anti-vibration bolt assembly proposed by the utility model has the beneficial effects that: the provided locking device, by screwing the limit block, makes the locking block close to the limit block move in the direction close to the nut, compressing the spring, and then pushing the locking block close to the nut to tighten the nut. When vibration occurs, the locking block is pressed against the nut by the elastic force of the compression spring, playing a role of stable axial limiting, ensuring that the nut and the first screw rod will not slide relative to each other; when vibration occurs, due to the effect of the first protrusion being engaged with the first positioning groove, the nut rotates in the counterclockwise direction, thereby driving the locking device to rotate in the counterclockwise direction. Due to the effect of the first protrusion being engaged with the second positioning groove, the limit block is rotated counterclockwise, and since the first thread and the second thread have opposite spiral directions, the limit block rotates counterclockwise to make the limit block move in the direction of the locking device, so that the locking device further presses the nut to prevent the nut from rotating, thereby playing a role of stable circumferential limiting, ensuring that the nut and the first screw rod will not rotate circumferentially. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural sectional view of the utility model;

[0014] Figure 2 This is an enlarged view of position A of the utility model;

[0015] Figure 3 This is an enlarged view of position B of the utility model;

[0016] Figure 4 This is an enlarged view of position C of the utility model;

[0017] Figure 5 It is an enlarged view of position D of the present utility model.

[0018] In the figure: nut 1, first screw 2, first thread 3, second screw 4, second thread 5, nut 6, limit block 7, first groove 8, first protrusion 9, first positioning groove 10, second positioning groove 11, locking block 12, first through hole 13, spring 14, second groove 15, gasket 16, second through hole 17, second protrusion 18, third positioning groove 19, third through hole 20, fixing bolt 21, fixing groove 22, connecting block 23, connecting hole 24. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-5The anti-skid and anti-vibration bolt assembly includes a nut 1 and a first screw rod 2. The surface of the first screw rod 2 is provided with a first thread 3. The end of the first screw rod 2 away from the nut 1 is provided with a second screw rod 4. The diameter of the second screw rod 4 is smaller than that of the first screw rod 2, which is convenient for installing a nut 6. The surface of the second screw rod 4 is provided with a second thread 5. The first thread 3 and the second thread 5 have opposite spiral directions, ensuring that when the nut 6 rotates counterclockwise, the limit block 7 is driven to rotate counterclockwise in a tightened state, which plays a role in circumferentially limiting the nut 6. The first screw rod 2 is provided with a nut 6 on the outside, and the inner wall of the nut 6 is threadedly connected with the first thread 3. The second screw rod 4 is provided with a limit block 7 on the outside, and the inner wall of the limit block 7 is threadedly connected with the second thread 5. A locking device is provided between the nut 6 and the limit block 7. A first groove 8 is provided on the side surface of the limit block 7 close to the locking device, and a plurality of first protrusions 9 are provided on both sides of the locking device. A plurality of first positioning grooves 10 are provided on the side surface of the nut 6 close to the locking device, and the first positioning groove 10 matches the first protrusion 9 to ensure that the first positioning groove 10 is engaged with the first protrusion 9. A plurality of second positioning grooves 11 are provided on the side surface of the limit block 7 close to the locking device, and the second positioning groove 11 matches the first protrusion 9 to ensure that the second positioning groove 11 is engaged with the first protrusion 9.

[0021] The locking device includes two locking blocks 12, and the surfaces of the two locking blocks 12 are provided with first through holes 13. One end of the first screw 2 passes through the two first through holes 13. A spring 14 is provided between the two locking blocks 12. The spring 14 is sleeved on the outside of the first screw 2. A synchronous rotation component is provided between the two locking blocks 12. The synchronous rotation component can ensure that the two locking blocks 12 form a whole and rotate synchronously.

[0022] The synchronous rotation assembly includes a plurality of connection blocks 23, one end of which is detachably connected to the surface of one side of the locking block 12, and a plurality of connection holes 24 are provided on the surface of the locking block 12 near the limit block 7, and the plurality of connection holes 24 correspond to the plurality of connection blocks 23 one by one, and one end of the connection block 23 passes through the connection hole 24. During installation, the nut 6 is installed first, and then the first locking block 12 is installed, and then the spring 14 is installed, and then the second locking block 12 is installed, and then the limit block 7 is installed. When the limit block 7 is fastened to the specified position, the connection block 23 is finally passed through the connection hole 24 and detachably connected to the locking block 12.

[0023] A second groove 15 is provided on the surface of the nut 6 near the nut cap 1, a gasket 16 is provided inside the second groove 15, a second through hole 17 is provided on the surface of the gasket 16, and one end of the first screw rod 2 passes through the second through hole 17. The gasket 16 is elastic, and the contact between the gasket 16 and the fixed object makes the connection between the nut 6 and the fixed object more secure.

[0024] A plurality of second protrusions 18 are provided on the inner wall of the second groove 15, and a plurality of third positioning grooves 19 are provided on the surface of the gasket 16 on one side close to the second protrusions 18. The plurality of second protrusions 18 correspond to the plurality of third positioning grooves 19 one by one, and the second protrusions 18 match the third positioning grooves 19. The gasket 16 will not shift due to the limitation of the second protrusions 18 and the third positioning grooves 19.

[0025] The surface of the limit block 7 is provided with a plurality of third through holes 20, each of which is provided with a fixing bolt 21, and the surface of the second screw rod 4 is provided with a plurality of fixing grooves 22 in an annular manner, and the fixing bolts 21 are threadedly connected with the fixing grooves 22. The fixing bolts 21 further prevent the nut 6 from moving in the axial direction and rotating in the circumferential direction.

[0026] Working principle: The locking device is set, by screwing the limit block 7, so that the locking block 12 close to the limit block 7 moves towards the direction close to the nut 6, compressing the spring 14, and then pushing the locking block 12 close to the nut 6 to tighten the nut 6. When vibration occurs, the elastic force of the compression spring 14 is used to make the locking block 12 press the nut 6, playing a role of stable axial limiting, ensuring that the nut 6 and the first screw 2 do not slide relative to each other; when vibration occurs, due to the clamping effect of the first protrusion 9 and the first positioning groove 10, the nut 6 rotates in the counterclockwise direction, thereby driving the locking block close to the nut 6 12 rotates counterclockwise, and since the connecting block 23 passes through the connecting hole 24, the locking block 12 close to the limit block 7 rotates counterclockwise. Due to the clamping effect of the first protrusion 9 and the second positioning groove 11, the limit block 7 rotates counterclockwise. Since the spiral directions of the first thread 3 and the second thread 5 are opposite, the limit block 7 rotates counterclockwise to move the limit block 7 toward the locking device, so that the locking block 12 close to the nut 6 further tightens the nut 6 to prevent the nut 6 from rotating, thereby playing a role of stable circumferential limiting and ensuring that the nut 6 and the first screw 2 do not rotate circumferentially.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-slip and anti-vibration bolt assembly, comprising a nut (1) and a first screw rod (2), characterized in that: A first thread (3) is provided on the surface of the first screw (2); a second screw (4) is provided on one end of the first screw (2) away from the nut (1); the diameter of the second screw (4) is smaller than that of the first screw (2); a second thread (5) is provided on the surface of the second screw (4); the spiral directions of the first thread (3) and the second thread (5) are opposite; a nut (6) is sleeved on the outside of the first screw (2); the inner wall of the nut (6) is threadedly connected to the first thread (3); a limit block (7) is sleeved on the outside of the second screw (4); the inner wall of the limit block (7) is threadedly connected to the first thread (3); The two threads (5) are threadedly connected, a locking device is provided between the nut (6) and the limit block (7), a first groove (8) is provided on a side surface of the limit block (7) close to the locking device, a plurality of first protrusions (9) are provided on both side surfaces of the locking device, a plurality of first positioning grooves (10) are provided on a side surface of the nut (6) close to the locking device, the first positioning grooves (10) match the first protrusions (9), and a plurality of second positioning grooves (11) are provided on a side surface of the limit block (7) close to the locking device, the second positioning grooves (11) match the first protrusions (9).

2. The anti-slip and anti-vibration bolt assembly according to claim 1, characterized in that: The locking device comprises two locking blocks (12), each of the two locking blocks (12) having a first through hole (13) on its surface, one end of the first screw rod (2) passing through the two first through holes (13), a spring (14) being arranged between the two locking blocks (12), the spring (14) being sleeved and arranged outside the first screw rod (2), and a synchronous rotation component being arranged between the two locking blocks (12).

3. The anti-slip and anti-vibration bolt assembly according to claim 2, characterized in that: The synchronous rotation assembly comprises a plurality of connection blocks (23), one end of the connection block (23) being detachably connected to a surface of one side of the locking block (12), a plurality of connection holes (24) being provided on a surface of the locking block (12) close to the limit block (7), the plurality of connection holes (24) corresponding one to one to the plurality of connection blocks (23), and one end of the connection block (23) passing through the connection hole (24).

4. The anti-slip and anti-vibration bolt assembly according to claim 1, characterized in that: A second groove (15) is provided on a surface of one side of the nut (6) close to the nut cap (1), a gasket (16) is provided inside the second groove (15), a second through hole (17) is provided on the surface of the gasket (16), and one end of the first screw rod (2) passes through the second through hole (17).

5. The anti-slip and anti-vibration bolt assembly according to claim 4, characterized in that: A plurality of second protrusions (18) are provided on the inner wall of the second groove (15); a plurality of third positioning grooves (19) are provided on a surface of one side of the gasket (16) close to the second protrusions (18); the plurality of second protrusions (18) correspond to the plurality of third positioning grooves (19) one by one, and the second protrusions (18) match the third positioning grooves (19).

6. The anti-slip and anti-vibration bolt assembly according to claim 1, characterized in that: A plurality of third through holes (20) are provided on the surface of the limit block (7), and fixing bolts (21) are provided inside the plurality of third through holes (20). A plurality of fixing grooves (22) are provided in an annular shape on the surface of the second screw rod (4), and the fixing bolts (21) are threadedly connected to the fixing grooves (22).

Images