CN223282362U - Shock-resistant bolt - Google Patents

Abstract

The utility model relates to the technical field of bolts and nuts, and proposes a seismic-resistant bolt comprising: a bolt body having a through slot; an elastic member slidably disposed within the through slot, with multiple elastic members symmetrically arranged; a clamping member disposed on the bolt body, the clamping member having a limiting surface and an extrusion surface, the extrusion surface being located outside the through slot, and the elastic member abutting against the extrusion surface; and a nut threadedly connected to the bolt body. When the nut presses against the extrusion surface, the extrusion surface presses against the elastic member. This technical solution solves the problem of poor seismic performance in the prior art.

Description

Shock-resistant bolt

Technical Field

The utility model relates to the technical field of bolts and nuts, in particular to an anti-seismic bolt.

Background

Bolts are a widely used connecting piece in many fields of construction, machinery, etc. However, the conventional bolts have significant drawbacks in facing the vibration environment.

Under earthquake or other strong vibration working conditions, the connection of the common bolt is easy to loosen due to the impact force received by the common bolt. This is because the conventional bolt is simple in structure and is fixed only by means of screw engagement between the nut and the bolt. When external force generated by vibration acts repeatedly, the nut can gradually loose, and the stability of the connecting structure can be reduced due to the loosening. In a building structure, for example, if bolts for connecting a steel structure frame are loosened, structural deformation may be caused to affect the safety of the whole building, and in mechanical equipment, the loosened bolts may cause relative displacement between parts, thereby affecting the normal operation of the equipment, and even possibly causing faults and safety accidents.

Disclosure of utility model

The utility model provides an anti-seismic bolt, which solves the problem of poor anti-seismic performance of bolts in the related art.

The technical scheme of the utility model is as follows:

An anti-seismic bolt comprising:

A bolt body having a through groove;

the elastic pieces are arranged in the through grooves in a sliding manner, and a plurality of elastic pieces are symmetrically arranged;

The clamping piece is arranged on the bolt main body and is provided with a limiting surface and an extrusion surface, the extrusion surface is positioned outside the through groove, and the elastic piece is abutted against the extrusion surface;

The nut is in threaded connection with the bolt main body, after the nut compresses tightly the extrusion face, the extrusion face compresses tightly the elastic component.

Optionally, the length direction of the through groove is perpendicular to the axial direction of the bolt main body.

Optionally, the elastic member includes:

the sliding blocks are symmetrically arranged in the through grooves about the axis of the bolt main body, and one end of each sliding block is abutted against the extrusion surface;

the spring is arranged in the through groove, two ends of the spring are respectively abutted between the adjacent sliding blocks, and the spring is used for providing force for the sliding blocks to compress the extrusion surface.

Optionally, the clamping piece includes:

the fixed ring is rotationally sleeved on the bolt main body;

the bending plates are arranged at intervals on the circumference of the outer wall of the fixing ring, and the limiting surfaces are the bottoms of the bending plates;

The arc-shaped side plate is arranged on the bending plate and is coaxially arranged with the bolt main body, the extrusion surface is the arc-shaped inner side surface, and the sliding block is abutted to the arc-shaped side plate.

Optionally, the inside of the bending plate is provided with a supporting bar, the supporting bar is obliquely arranged, and the supporting bar is used for providing force for the bending plate to press the nut after the nut abuts against the pressing surface.

Optionally, the bending part of the bending plate is arc-shaped.

Optionally, the nut includes:

the clamping plates are arranged at intervals on one end face of the nut, are obliquely arranged, and one end, far away from the nut, of each clamping plate is abutted against the threads of the bolt main body;

The circular ring is arranged on the other end face, far away from the nut, of the nut, and the circular ring is abutted with the extrusion surface.

Optionally, the bending plate has a through hole, and further includes:

the lug is arranged on the bolt main body, and after the fixing ring drives the bending plate to rotate, the lug is clamped in the through hole.

Optionally, the outer surface of the arc-shaped side plate is provided with a sliding prevention groove or threads matched with the nut.

Optionally, a clamping block is disposed at one end of the clamping plate away from the nut, and the clamping block is clamped with the threaded groove of the bolt main body.

The working principle and the beneficial effects of the utility model are as follows:

When the bolt is subjected to vibration, the symmetrically arranged elastic pieces can uniformly distribute stress in all directions, so that vibration is effectively buffered. The clamping piece is arranged on the bolt main body, the extrusion surface is positioned outside the through groove and is in tight contact with the elastic piece, so that an interactive system is formed. The nut is connected with the bolt main body through threads, and pressure can be applied to the extrusion surface of the clamping piece in the screwing process, so that the whole structure is tightly matched, and the anti-seismic function is realized. When in installation, the bolt main body is firstly penetrated through the parts to be connected. Then, the clip is mounted in place on the bolt body. Then the elastic piece is put into the through groove to be contacted with the extrusion surface of the clamping piece. Finally, the nut is screwed onto the bolt body. In the process of tightening the nut, the nut gradually compresses the clamping piece, and the extrusion surface of the clamping piece transmits pressure to the elastic piece, so that the elastic piece is elastically deformed. In the use, when receiving vibrations, the not hard up trend that vibrations produced can be offset by the elastic force of elastic component. Because the elastic piece can slide in the through groove, the acting force on the clamping piece can be adaptively adjusted according to the vibration direction and the vibration size, so that the nut and the bolt main body are stably connected.

Drawings

The above features, technical features, advantages and implementation of the present utility model will be further described in the following description of preferred embodiments with reference to the accompanying drawings in a clear and easily understood manner.

FIG. 1 is a schematic view of a bolt body and a clamping member according to the present utility model;

FIG. 2 is a schematic view of the structure of the bolt body and nut of the present utility model;

FIG. 3 is a side view of the bolt body of the present utility model;

FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;

fig. 5 is a schematic view of the nut structure of the present utility model.

In the figure, 1, a bolt main body, 101, a through groove, 5, an elastic piece, 3, a clamping piece, 313, a limiting surface, 314, an extrusion surface, 4, a nut, 501, a sliding block, 502, a spring, 30, a fixing ring, 31, a bending plate, 32, an arc-shaped side plate, 311, a supporting bar, 41, a clamping plate, 42, a circular ring, 312, a through hole, 2, a bump, 321, an anti-skid groove, 411 and a clamping block.

Detailed Description

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will explain the specific embodiments of the present utility model with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the utility model, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.

For simplicity of the drawing, only the parts relevant to the utility model are schematically shown in each drawing, and they do not represent the actual structure thereof as a product. In addition, in order to simplify the drawings and facilitate understanding, components having the same structure or function in some drawings are only schematically illustrated in one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one", and "a number" includes "two" and "two or more".

In this context, unless explicitly stated or limited otherwise, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or communicate between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, in the description of the present application, the terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-5, an anti-vibration bolt according to an embodiment of the utility model is provided, which comprises a bolt main body 1 having a through groove 101, elastic members 5 slidably disposed in the through groove 101, a plurality of elastic members 5 symmetrically disposed, a clamping member 3 disposed on the bolt main body 1, the clamping member 3 having a limiting surface 313 and a pressing surface 314, the pressing surface 314 being located outside the through groove 101, the elastic members being abutted against the pressing surface 314, and a nut 4 screwed onto the bolt main body 1, wherein the pressing surface 314 is pressed by the nut 4, and then the elastic members 5 are pressed by the pressing surface 314.

In the above scheme, the through grooves 101 are formed in the screw of the bolt main body 1, the through grooves 101 are horizontally arranged, and the elastic pieces 5 are symmetrically arranged in the through grooves 101. When receiving vibrations, the elastic component 5 of symmetrical arrangement can evenly distributed all directions's atress, effectively cushions vibrations. The clamping piece 3 is arranged on the bolt main body 1, the pressing surface 314 is positioned outside the through groove 101 and is tightly contacted with the elastic piece 5, so that an interactive system is formed. The nut 4 is connected with the bolt main body 1 through threads, and can apply pressure to the extrusion surface 314 of the clamping piece 3 in the screwing process, so that the whole structure is tightly matched, and the anti-seismic function is realized. In the mounting, the bolt body 1 is first passed through the components to be connected. Next, the clip 3 is mounted at an appropriate position of the bolt body 1. The elastic member 5 is then placed in the through groove 101 so as to be in contact with the pressing surface 314 of the clip 3. Finally, the nut 4 is screwed onto the bolt body 1. In the process of tightening the nut 4, the nut 4 gradually compresses the clamping piece 3, and the pressing surface 314 of the clamping piece 3 transmits pressure to the elastic piece 5, so that the elastic piece 5 is elastically deformed. In the use process, when the vibration is received, the loosening trend generated by the vibration can be counteracted by the elastic force of the elastic piece 5. Since the elastic member 5 is slidable in the through groove 101, the force applied to the engagement member 3 can be adaptively adjusted according to the direction and magnitude of the vibration, thereby maintaining the connection between the nut 4 and the bolt body 1 stable.

Further, the longitudinal direction of the through groove 101 is perpendicular to the axial direction of the bolt body 1.

In the above-described aspect, the longitudinal direction of the through groove 101 of the bolt body 1 is perpendicular to the axial direction of the bolt body 1, and the perpendicular arrangement makes it possible to better disperse the force in the direction perpendicular to the bolt axis when the elastic member 5 receives the force transmitted from the nut 4 and the click member 3. This vertical orientation allows for a more efficient use of the space of the through slot 101 than would otherwise be possible, providing a more stable installation and working environment for the elastic member 5, and making the elastic member 5 more reliable when subjected to the complex forces generated by shock. In a vibration environment, a force generated by vibration acts on the joint portion of the nut 4 and the bolt body 1 in various directions. The through grooves 101 enable the elastic member 5 to respond better to vibration components perpendicular to the bolt axis direction, and to cushion these vibrations by elastic deformation, thereby reducing the influence of the vibrations on the loosening of the nut 4.

Further, the elastic piece 5 comprises a plurality of sliding blocks 501, a plurality of sliding blocks 501 and a spring 502, wherein the sliding blocks 501 are symmetrically arranged in the through groove 101 around the axis of the bolt main body 1, one end of each sliding block 501 is abutted against the extrusion surface 314, the spring 502 is arranged in the through groove 101, two ends of each spring 502 are respectively abutted between the adjacent sliding blocks 501, and the spring 502 is used for providing force for the sliding blocks 501 to press the extrusion surface 314.

In the above-described arrangement, the sliders 501 are sequentially placed in the through grooves 101 at the time of installation, and then the springs 502 are installed between the adjacent sliders 501. When the nut 4 is tightened and pressure is applied to the pressing surface 314 of the clip 3, the pressing surface 314 transmits the pressure to the slider 501, and the slider 501 slides into the through groove 101, compressing the spring 502. The spring 502 stores elastic potential energy. In the vibration environment, when the force generated by vibration tries to loosen the nut 4, the spring 502 pushes the sliding block 501 to move toward the pressing surface 314, so that the pressing surface 314 is subjected to a reverse pressure, thereby preventing the nut 4 from loosening. Due to the symmetrical arrangement of the slider 501, the springs 502 can cooperate in all directions, effectively resisting vibrations from different directions.

Further, the clamping piece 3 comprises a fixed ring 30 rotationally sleeved on the bolt main body 1, a plurality of bending plates 31 arranged on the periphery of the outer wall of the fixed ring 30 at intervals, a limiting surface 313 which is the bottom surface of the bending plates 31, an arc-shaped side plate 32 arranged on the bending plates 31, an arc-shaped side plate 32 coaxially arranged with the bolt main body 1, an extrusion surface 314 which is an arc-shaped inner side surface, and a sliding block 501 abutted on the arc-shaped side plate 32.

In the above-described solution, the material of the fixing ring 30 has a certain strength and wear resistance to adapt to long-term use and possible friction. The number of the bending plates 31 is a plurality, and the bending plates are uniformly distributed at intervals on the circumferential direction of the outer wall of the fixing ring 30. The shape and size of the bent plate 31 are determined according to the overall size of the bolt, and the bottom surface thereof serves as a limiting surface 313 for positioning and limiting during installation and use. The arc-shaped side plate 32 is provided on the bending plate 31, coaxially arranged with the bolt main body 1. The arc inner side surface of the arc-shaped side plate 32 serves as a pressing surface 314, and the arc and the size of the pressing surface are matched with those of the sliding block 501 of the elastic piece 5, so that the pressing surface is in close contact with the sliding block 501. If vibration is generated to loosen the nut 4, the pressure is transmitted to the whole structure of the clamping piece 3 through the arc-shaped side plate 32 due to the connection relation between the arc-shaped side plate 32, the fixed ring 30 and the bending plate 31. The fixing ring 30 can be adaptively adjusted in position during installation and use, and good matching of the clamping piece 3 with the nut 4 and the elastic piece 5 is ensured.

Further, the inner side of the bending plate 31 is provided with a supporting bar 311, the supporting bar 311 is obliquely arranged, and after the nut 4 abuts against the pressing surface 314, the supporting bar 311 is used for providing the force of the bending plate 31 for pressing the nut 4.

In the above-described arrangement, during the process of installing and tightening the nut 4, the nut 4 applies pressure to the pressing surface 314 of the clip 3, and this pressure is transmitted to the support bar 311 through the bending plate 31. Since the support bars 311 are disposed obliquely, a component force perpendicular to the plane of the bending plate 31 and a component force along the plane of the bending plate 31 are generated when pressure is applied. The vertical component force makes the bending plate 31 have a tendency to hold the nut 4 tightly, thereby increasing the friction force between the nut 4 and the clamping member 3 and preventing the nut 4 from loosening. In a vibration environment, even if an external force tries to loosen the nut 4, the tightening force generated by the inclined structure of the supporting bar 311 can still effectively resist the loosening trend, so that the stability of the nut 4 is maintained.

Further, the bending portion of the bending plate 31 is arc-shaped.

In the above-described arrangement, when the nut 4 is tightened and pressure is applied to the bending plate 31, the pressure is transmitted through the bending plate 31. When the pressure passes the bending position, the force can be uniformly distributed along the arc-shaped surface due to the arc-shaped structure, so that the condition that the bending plate 31 is damaged due to the stress concentration at a certain point is avoided. Under long-term use and vibration environment, the structural integrity of the bending plate 31 can be ensured at the arc bending position, so that the function of holding the nut 4 and transmitting force can be continuously and stably exerted.

Further, the nut 4 comprises a plurality of clamping plates 41, a plurality of clamping plates 41 are arranged on one end face of the nut 4 at intervals, the clamping plates 41 are obliquely arranged, one end, away from the nut 4, of each clamping plate 41 is abutted against threads of the bolt main body 1, a circular ring 42 is arranged on the other end face, away from the nut 4, of each clamping plate 41, and the circular ring 42 is abutted against the extrusion face 314.

In the above-described arrangement, the nut 4 is screwed onto the bolt body 1 when the nut 4 is installed. As the nut 4 is tightened, the click plate 41 comes into contact with the threads of the bolt body 1 at an angle such that the click plate 41 comes into closer abutment on the threads under the guidance of the threads. At the same time, the ring 42 is in contact with the pressing surface 314 of the clip 3 and starts transmitting the pressure. In a vibration environment, when an external force tries to loosen the nut 4, the clamping plate 41 is in close contact with the threads of the bolt body 1 and the ring 42 and the pressing surface 314 are in pressure transmission combined action, so that the nut 4 is prevented from loosening. The inclined arrangement of the clamping plate 41 enables the clamping plate to generate a component force opposite to the loosening direction under the action of external force generated by vibration, so that the loosening resistance of the nut 4 is further enhanced.

Further, the bending plate 31 has a through hole 312, and further includes a protrusion 2 disposed on the bolt body 1, and after the fixing ring 30 drives the bending plate 31 to rotate, the protrusion 2 is clamped in the through hole 312.

In the above-described scheme, when the fixing ring 30 drives the bending plate 31 to rotate to a certain position, the protrusion 2 on the bolt body 1 is exactly aligned with the through hole 312 of the bending plate 31. At this time, the bump 2 is engaged in the through hole 312 to fix the position of the bending plate 31. The clamping piece 3 is ensured not to rotate at will due to vibration or other external forces in the use process, and the stability of the whole bolt connection structure is ensured. Even if a large external force acts in a vibration environment, the clamping connection between the lug 2 and the through hole 312 can still keep the position of the clamping piece 3 stable, so that the connection state of the nut 4 and the bolt main body 1 is maintained.

Further, the outer surface of the arc-shaped side plate 32 is provided with a sliding prevention groove 321 or threads which are matched with the nut 4.

In the above-described scheme, when the nut 4 is screwed and contacts the arc-shaped side plate 32, if the outer surface of the arc-shaped side plate 32 is the anti-slip groove 321, the friction force between the nut 4 and the arc-shaped side plate 32 may be increased by the anti-slip groove 321. Such increased friction may effectively prevent the nut 4 from sliding relative to the arcuate side plates 32 when subjected to shock, thereby reducing the likelihood of loosening the nut 4. If the outer surface of the arc-shaped side plate 32 is provided with threads which are matched with the nut 4, the threads of the arc-shaped side plate and the nut 4 are meshed with each other in the screwing process of the nut. Under the vibration environment, the threaded connection mode is larger than the simple surface contact friction force, and can better resist the loosening force of the nut 4 generated by vibration, so that the connection between the nut 4 and the clamping piece 3 is more stable.

Further, the end of the locking plate 41 far away from the nut 4 is provided with a locking block 411, and the locking block 411 is locked with the thread groove of the bolt body 1.

In the above-described aspect, when the clamping block 411 at the end of the clamping plate 41 contacts the screw groove, the clamping block 411 is clamped into the screw groove under the guidance of the screw. In a normal operation state, the clamping connection between the clamping block 411 and the threaded groove enhances the connection strength between the nut 4 and the bolt main body 1. When receiving vibrations, the loosening force generated by the vibrations acts on the nut 4, but the tight engagement of the clamping block 411 with the screw groove can prevent the rotation of the nut 4, thereby maintaining the stable position of the nut 4 on the bolt body 1 and preventing loosening.

It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.

Claims (10)

1. An anti-seismic bolt, comprising:

a bolt body (1) having a through groove (101);

The elastic pieces (5) are arranged in the through grooves (101) in a sliding mode, and the elastic pieces (5) are symmetrically arranged;

The clamping piece (3) is arranged on the bolt main body (1), the clamping piece (3) is provided with a limiting surface (313) and an extrusion surface (314), the extrusion surface (314) is positioned outside the through groove (101), and the elastic piece (5) is abutted to the extrusion surface (314);

The nut (4) is in threaded connection with the bolt main body (1), and after the nut (4) presses the pressing surface (314), the pressing surface (314) presses the elastic piece (5).

2. An anti-seismic bolt according to claim 1, characterized in that the length direction of the through groove (101) is perpendicular to the axial direction of the bolt body (1).

3. An anti-shock bolt according to claim 1, characterized in that said elastic element (5) comprises:

The sliding blocks (501) are arranged in the through grooves (101) symmetrically with respect to the axis of the bolt main body (1), and one end of each sliding block (501) is abutted against the extrusion surface (314);

The spring (502) is arranged in the through groove (101), two ends of the spring (502) are respectively abutted between the adjacent sliding blocks (501), and the spring (502) is used for providing force for the sliding blocks (501) to press the pressing surface (314).

4. A shock-resistant bolt according to claim 3, wherein the clamping element (3) comprises:

the fixed ring (30) is rotationally sleeved on the bolt main body (1);

The bending plates (31) are arranged in the circumferential direction of the outer wall of the fixed ring (30) at intervals, and the limiting surfaces (313) are the bottom surfaces of the bending plates (31);

Arc curb plate (32) set up in on bending plate (31), arc curb plate (32) with bolt main part (1) coaxial arrangement, extrusion face (314) are the arc medial surface, sliding block (501) butt in on arc curb plate (32).

5. An anti-seismic bolt according to claim 4, characterized in that the bending plate (31) has a support bar (311) on the inside, said support bar (311) being arranged obliquely, said support bar (311) being adapted to provide a force with which said bending plate (31) compresses said nut (4) after said nut (4) abuts against said compression surface (314).

6. An anti-seismic bolt according to claim 4, wherein the bending of the bending plate (31) is curved.

7. An anti-shock bolt according to claim 1, characterized in that said nut (4) comprises:

the clamping plates (41) are arranged at intervals on one end face of the nut (4), the clamping plates (41) are obliquely arranged, and one end, far away from the nut (4), of each clamping plate (41) is abutted to the thread of the bolt main body (1);

And the circular ring (42) is arranged on the other end surface, far away from the nut (4), and the circular ring (42) is abutted with the extrusion surface (314).

8. An anti-seismic bolt according to claim 4, wherein said bending plate (31) has a through hole (312), further comprising:

The lug (2) is arranged on the bolt main body (1), and after the fixing ring (30) drives the bending plate (31) to rotate, the lug (2) is clamped in the through hole (312).

9. An anti-shock bolt according to claim 4, characterized in that the outer surface of the arc-shaped side plate (32) is provided with anti-slip grooves (321) or threads adapted to the nut (4).

10. An anti-seismic bolt according to claim 7, characterized in that the end of the clamping plate (41) remote from the nut (4) is provided with a clamping block (411), and the clamping block (411) is clamped with a threaded groove of the bolt main body (1).