Anti-slip and anti-vibration bolt assembly

Abstract

The patent of the present invention discloses an anti-slip and anti-vibration bolt assembly, including a two-way bolt, a first nut, a second nut and an anti-slip and anti-vibration assembly, wherein a plurality of limit grooves are opened on the outer wall of the first nut, a positive internal thread is provided on the inner wall of the first nut, and a plurality of positive ratchet teeth arranged in an annular pattern are evenly arranged upward with the axis center of the screw cross section as a circle point. The anti-slip and anti-vibration assembly includes a connecting cylinder connected to the top end of the second nut, a sliding cylinder sleeved on the outer wall of the connecting cylinder and a plurality of limit rods arranged at the top end of the sliding cylinder. The plurality of limit rods are evenly arranged along the outer circumference of the sliding cylinder, the inner wall of the connecting cylinder is connected to the inner wall of the second nut, the inner wall of the connecting cylinder and the inner wall of the second nut are both provided with reverse internal threads, the outer wall of the limit rod matches the inner wall of the limit groove, and the number of the limit rods is the same as that of the limit groove, and a plurality of reverse ratchet teeth arranged in an annular pattern are evenly arranged downward with the axis center of the screw cross section as a circle point, and the reverse ratchet teeth are relatively meshed with the positive ratchet teeth.

Description

Technical Field

[0001] The patent of this invention relates to the technical field of bolts and nuts, and in particular to an anti-slip and anti-vibration bolt assembly. Background Art

[0002] Bolts are widely used in daily life, primarily for the installation and fastening of various components. Existing bolts typically have external threads that match the internal threads of nuts, making them easy to install and disassemble, but their anti-loosening and anti-vibration functions are poor. For example, Japanese Hardlock nuts are prone to thermal expansion when used in high-speed trains, engines, and other places. After thermal expansion, the nuts become loose, and after tightening during normal use, a vertical line is drawn between the two nuts and the bolt. If maintenance personnel find that the line is offset during inspection, they need to retighten it, and frequent maintenance increases the labor intensity. Existing flange bolts and flange nuts, although improved, still require gaskets or spring washers for fixing during use, which can easily loosen. In addition, equipment will generate vibrations during operation, such as mechanical equipment and wheel hubs. Relying solely on spring washers can easily fall off, resulting in ineffective fastening, causing equipment failure and leading to safety accidents.

[0003] Therefore, how to provide an anti-slip and anti-vibration bolt assembly that can effectively prevent the bolt from being unscrewed or falling off from the nut due to vibration when the use environment generates vibration, thereby causing equipment failure or even safety accidents, is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an anti-slip and anti-vibration bolt assembly.

[0005] The present invention is realized through the following technical solutions: an anti-slip and anti-vibration bolt assembly, the structure of which includes a bidirectional bolt, a first nut, a second nut and an anti-slip and anti-vibration assembly, a plurality of vertically arranged limit grooves are evenly opened on the outer wall of the first nut, a positive internal thread is provided on the inner wall of the first nut, and a plurality of positive ratchets arranged in a ring are evenly provided on the top of the second nut with the axis of the screw cross section as the circle point, the anti-slip and anti-vibration assembly includes a connecting cylinder fixedly connected to the top of the second nut, a sliding cylinder sleeved on the outer wall of the connecting cylinder and a plurality of limit rods fixedly provided on the top of the sliding cylinder, the inner wall of the sliding cylinder is in contact with the outer wall of the connecting cylinder and is mutually For sliding, multiple limit rods are evenly arranged along the outer circumference of the slide cylinder, the inner wall of the connecting cylinder is connected to the inner wall of the second nut and the diameters match, the inner wall of the connecting cylinder and the inner wall of the second nut are both provided with reverse internal threads, the outer wall of the limit rod matches the inner wall of the limit groove and slides relatively, the number of limit rods and limit grooves is the same, and a plurality of reverse ratchets arranged in a ring are evenly arranged downward with the axis center of the screw cross section as the center point at the bottom end of the slide cylinder, and the reverse ratchets are relatively meshed with the forward ratchets, the inner wall of the first nut, the inner wall of the second nut and the inner wall of the connecting cylinder are all threadedly connected to the outer wall of the screw, and the height of the limit rod is the same as the height from the top of the first bolt to the top of the sliding sleeve.

[0006] Preferably, a limiting ring is fixedly provided on the outer wall at the top end of the connecting tube, and the outer wall of the limiting ring fits with the inner wall of the limiting rod close to the screw and slides relatively. A spring is sleeved on the outer wall of the connecting tube, and the top and bottom ends of the spring respectively fit with the bottom end of the limiting ring and the top end of the sliding tube.

[0007] Preferably, the limiting groove is provided with an upwardly opening card slot near the upper part of the inner wall of the screw, the inner wall of the inner wall of the card slot and the inner wall of the limiting groove are connected and have the same width, and the limiting rod is fixedly provided with a card block for engaging with the bottom end of the inner wall of the card slot near the top of the side wall of the screw, the height of the card block is the same as the height of the card slot, the outer wall of the card block fits with the inner wall of the limiting groove and slides relatively, and the limiting rod has toughness.

[0008] Preferably, the top end of the clamping block is tilted downward from the end close to the limiting rod to the end close to the screw rod.

[0009] Preferably, a plurality of fixed connection resistance rings are evenly arranged on the outer wall of the sliding sleeve from top to bottom along the circumferential direction.

[0010] The beneficial effect of the patent of the present invention is that by arranging a bidirectional external thread on the screw, a forward internal thread of the first nut and a reverse internal thread of the second nut, the first nut and the second nut rotate in opposite directions relative to each other when loosened. At the same time, by arranging a limit groove on the first nut, in conjunction with the anti-slip and anti-vibration component, the positive ratchet and the reverse ratchet are relatively engaged to achieve the effect of anti-loosening and anti-vibration. At the same time, by arranging a limit ring in conjunction with the spring, a downward force is provided to the slide cylinder to achieve the effect of always keeping the positive ratchet and the reverse ratchet engaged, further achieving the effect of anti-loosening and anti-vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 2 is a schematic structural diagram of an anti-slip and anti-vibration bolt assembly in an embodiment;

[0012] Figure 2 A front view of an anti-slip and anti-vibration bolt assembly in an embodiment when a limiting rod is not connected to a limiting groove;

[0013] Figure 3 for Figure 2 Cross-sectional view along AA direction;

[0014] Figure 3a for Figure 3 A cross-sectional view of the top end of the middle limiting ring and the bottom end of the first nut in a state of being in contact with each other;

[0015] Figure 4 for Figure 2 Cross-sectional view along direction BB;

[0016] Figure 5 for Figure 2 Cross-sectional view along CC direction. DETAILED DESCRIPTION

[0017] The following is a detailed description of the embodiments of the present invention. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process. However, the scope of protection of the present invention is not limited to the following embodiments.

[0018] like Figure 1-5As shown, the patent of the present invention discloses an anti-slip and anti-vibration bolt assembly, including: a bidirectional bolt 1, a first nut 2, a second nut 3 and an anti-slip and anti-vibration assembly 4, the bidirectional bolt 1 includes a nut 11 and a screw 12 fixedly arranged at the bottom of the nut 11, the screw 12 is provided with a bidirectional external thread, a plurality of vertically arranged limiting grooves 21 are evenly opened on the outer wall of the first nut 2, a positive internal thread is provided on the inner wall of the first nut 2, and a plurality of positive ratchet teeth 31 arranged in a ring are evenly arranged upward from the axis center of the cross section of the screw 12 at the top of the second nut 3, the anti-slip and anti-vibration assembly 4 includes a connecting cylinder 41 fixedly connected to the top of the second nut 3, a sliding cylinder 42 sleeved on the outer wall of the connecting cylinder 41 and a plurality of limiting rods 43 fixedly provided at the top of the sliding cylinder 42, the sliding cylinder 42 The inner wall of the slide cylinder 42 fits with the outer wall of the connecting cylinder 41 and slides relatively. The inner wall of the slide cylinder 42 is rotatably connected to the outer wall of the connecting cylinder 41. A plurality of limiting rods 43 are evenly arranged along the outer circumference of the slide cylinder 42. The inner wall of the connecting cylinder 41 is connected to the inner wall of the second nut 3 and the diameters match. The inner wall of the connecting cylinder 41 and the inner wall of the second nut 3 are both provided with reverse internal threads. The outer wall of the limiting rod 43 matches the inner wall of the limiting groove 21 and slides relatively. The number of limiting rods 43 and the limiting groove 21 is the same. At the bottom end of the slide cylinder 42, a plurality of reverse ratchet teeth 44 arranged in a ring are evenly arranged downward with the axis center of the cross section of the screw 12 as the center point. The reverse ratchet teeth 44 are relatively meshed with the forward ratchet teeth 31. The inner wall of the first nut 2, the inner wall of the second nut 3 and the inner wall of the connecting cylinder 41 are all threadedly connected to the outer wall of the screw 12. Figure 1 As shown, when the top end of the connecting tube 41 is in contact with the bottom end of the first nut 2 , the height of the limiting rod 43 is the same as the height from the top end of the first bolt 2 to the top end of the sliding sleeve 42 .

[0019] Based on the above structure, Figure 1-5 As shown, when it is needed, first insert the screw 12 of the two-way bolt 1 through the hole opened in advance on the fixture, and then, as shown in FIG. Figure 3As shown, first rotate the first nut 2 clockwise so that the inner wall of the first nut 2 is threadedly connected to the outer wall of the screw 12 until the top of the first nut 2 fits into the corresponding side of the fixed object, and then fix the second nut 3 with one end of the connecting tube 41 facing the first nut 2, and rotate the second nut 3 counterclockwise so that the inner wall of the second nut 3 is threadedly connected to the outer wall of the screw 12. At the same time, the inner wall of the connecting tube 41 is threadedly connected to the outer wall of the screw 12 along with the second nut 3. When the top of the limiting rod 43 is parallel to the bottom end of the first nut 2, rotate the slide 42 to align the position of the limiting rod 43 with the position of the corresponding limiting groove 21, continue to rotate the second nut 3 counterclockwise, and the limiting rod 43 slides upward along the corresponding limiting groove 21. When the limiting rod 43 is in the opposite direction, the limiting rod 43 is rotated to the left and right sides of the fixing member. The bottom end of the positioning rod 43 is parallel to the top end of the first nut 2, and the fixed object generates a reaction force on the limiting rod 43. The slide cylinder 42 slides downward along the connecting cylinder 41 until the top end of the connecting cylinder 41 is in contact with the bottom end of the first nut 2, and the positive ratchet 31 is engaged with the reverse ratchet 44. When the first nut 2 becomes loose due to vibration and rotates counterclockwise, the second nut 3 will also rotate clockwise with the vibration. The first nut 2 will drive the limiting rod 43 to rotate with the axis of the cross section of the screw rod 12 as the center through the limiting groove 21. The limiting rod 43 drives the slide cylinder 42 to rotate, and at this time the positive ratchet 31 will limit the first nut 2 and the second nut 3 respectively through the meshing relationship with the reverse ratchet 44, thereby achieving the effect of anti-loosening and anti-vibration.

[0020] Further, such as Figure 2-3a As shown, in order to keep the forward ratchet 31 and the reverse ratchet 44 engaged at all times, a limit ring 45 is fixedly provided on the outer wall of the top end of the connecting cylinder 41, and the outer wall of the limit ring 45 fits with the inner wall of the limit rod 43 close to the screw 12 and slides relatively. A spring 46 is sleeved on the outer wall of the connecting cylinder 41, and the top and bottom ends of the spring 46 respectively fit with the bottom end of the limit ring 45 and the top end of the slide cylinder 42. When the second nut 3 becomes loose, the bottom end of the limit ring 45 provides support for the spring 46, and the spring 46 uses its own elastic force to push the slide cylinder 42 to slide downward along the outer wall of the connecting cylinder 41, thereby keeping the forward ratchet 31 and the reverse ratchet 44 engaged at all times.

[0021] Further, such as Figure 2-3a As shown, the upper part of the inner wall of the limit groove 21 near the screw 2 is provided with an upward-opening card slot 22, the inner wall of the limit groove 21 of the card slot 22 is connected and has the same width, and the limit rod 43 is fixedly provided with a card block 431 for clamping with the bottom end of the inner wall of the card slot 22 at the top of the side wall near the screw 2. The height of the card block 431 is the same as the height of the card slot 22, and the outer wall of the card block 431 fits with the inner wall of the limit groove 21 and slides relatively. The limit rod 43 has toughness, and the top of the card block 431 is tilted downward from one end close to the limit rod 43 to the end close to the screw 2, thereby forming an inclined surface.

[0022] Based on the above structure, Figure 2-5 As shown, when the top end of the limiting rod 43 is parallel to the bottom end of the first nut 2, the position of the limiting rod 43 is aligned with the position of the corresponding limiting groove 21, and the top end of the clamping block 431 abuts against the bottom end of the first nut 2, and then the second nut 3 continues to rotate counterclockwise, and the limiting rod 43 continues to move upward along the corresponding limiting groove 21. The bottom end of the first nut 2 generates resistance to the inclined surface of the clamping block 431, and the clamping block 431 is displaced to the side away from the screw rod 12. At the same time, the limiting rod 43 As the block 431 is positioned, the top end is displaced toward the side away from the screw rod 12, and the limiting rod 43 itself is slightly bent from top to bottom. At the same time, as the second nut 3 continues to rotate counterclockwise, the block 431 enters the limiting groove 21 until the block slides into the groove 22. The block 431 continues to slide upward along the groove 22 until the top end of the limiting rod 43 is in contact with the outer wall of the fixed object. At this time, the top end of the connecting tube 41 is in contact with the bottom end of the first nut 2, and the spring 46 is in a contracted state.

[0023] When the second nut 3 is loose, the second nut 3 drives the limiting ring 45 to move downward through the connecting tube 41, and the limiting ring 45 pushes the slide 42 to move downward accordingly through the spring 46, and the slide 42 drives the limiting rod 43 to slide downward along the limiting groove 21. At this time, the card slot 22 engages with the card block 431 to play a limiting role, preventing the second nut 3 from loosening, and driving the limiting rod 43 to slide downward along the limiting groove 21, thereby loosening the meshing connection between the forward ratchet 31 and the reverse ratchet 44, and at the same time, cooperating with the two ends of the spring 46 to apply opposite forces to the limiting ring 45 and the slide 42, thereby achieving the effect of anti-loosening and anti-vibration.

[0024] The above are only preferred specific implementation methods of the patent of the present invention, but the protection scope of the patent of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the patent of the present invention, who makes equivalent replacements or changes based on the technical solution of the patent of the present invention and its utility model concept, should be covered by the protection scope of the patent of the present invention.

[0025] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising...items..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. An anti-slip and anti-vibration bolt assembly, characterized in that: include: A bidirectional bolt (1) comprises a nut (11) and a screw rod (12) fixedly arranged at the bottom of the nut (11), wherein the screw rod (12) is provided with a bidirectional external thread; The first nut (2) has a plurality of vertically arranged limiting grooves (21) evenly arranged on its outer wall, and a positive internal thread is arranged on its inner wall; The second nut (3) has a top end provided with a plurality of positive ratchet teeth (31) arranged in a circular pattern upwardly and uniformly with the axis of the cross section of the screw rod (12) as a circle point; The anti-slip and anti-vibration assembly (4) comprises a connecting tube (41) fixedly connected to the top end of the second nut (3), a sliding tube (42) sleeved on the outer wall of the connecting tube (41), and a plurality of limiting rods (43) fixedly arranged on the top end of the sliding tube (42), wherein the inner wall of the sliding tube (42) fits the outer wall of the connecting tube (41) and slides relatively therewith, and the plurality of limiting rods (43) are evenly arranged along the outer circumference of the sliding tube (42); The inner wall of the connecting cylinder (41) is connected to the inner wall of the second nut (3) and the diameters thereof are matched. The inner wall of the connecting cylinder (41) and the inner wall of the second nut (3) are both provided with reverse internal threads. The outer wall of the limiting rod (43) matches the inner wall of the limiting groove (21) and slides relatively. The number of the limiting rods (43) and the limiting grooves (21) is the same. A plurality of reverse ratchet teeth (44) arranged in a ring are evenly arranged downward with the axis of the cross section of the screw rod (12) as the center point at the bottom end of the sliding cylinder (42). The reverse ratchet teeth (44) are relatively meshed with the forward ratchet teeth (31). A limiting ring (45) is fixedly provided on the outer wall of the top end of the connecting cylinder (41), and the outer wall of the limiting ring (45) is in contact with the inner wall of the limiting rod (43) close to the screw rod (12) and slides relatively therewith. A spring (46) is sleeved on the outer wall of the connecting cylinder (41), and the top and bottom ends of the spring (46) are respectively in contact with the bottom end of the limiting ring (45) and the top end of the sliding cylinder (42).

2. The anti-slip and anti-vibration bolt assembly according to claim 1, characterized in that: A clamping groove (22) opening upward is provided on the upper portion of the inner wall of the limiting groove (21) near the screw rod (12); the inner wall of the clamping groove (22) is connected to the inner wall of the limiting groove (21) and has the same width; a clamping block (431) for clamping with the bottom end of the inner wall of the clamping groove (22) is fixedly provided on the top end of the side wall of the limiting rod (43) near the screw rod (12); and the limiting rod (43) has toughness.

3. The anti-slip and anti-vibration bolt assembly according to claim 2, characterized in that: The top end of the clamping block (431) is tilted downward from one end close to the limiting rod (43) to one end close to the screw rod (12).

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