Anti-loosening double-end stud

Abstract

The utility model discloses an anti-loosening double-end stud which comprises a double-end stud body composed of a polished rod and a threaded rod connected to the outer end of the polished rod, a first bevel gear with a shaft arranged on the inner side of the middle of the double-end stud body, and fixing sleeves fixedly connected to the outer sides of the two ends of the double-end stud body. The first anti-loosening structure and the second anti-loosening structure are arranged on the inner side of the middle of the double-end stud body and the outer side of the outer end of the double-end stud body respectively, the first anti-loosening structure comprises a first bevel gear with a shaft, a second bevel gear with a shaft, a movable plate and a rubber pad, and the second anti-loosening structure comprises a fixed sleeve, an adjusting sleeve and an abutting rod; a heat dissipation structure is arranged in the double-end stud body and comprises a first heat dissipation hole and a second heat dissipation hole. According to the anti-loosening double-end stud, the double-end stud can be tightly attached and connected with a to-be-connected piece conveniently, the double-end stud is prevented from loosening, a nut installed on the double-end stud can be limited and prevented from loosening, heat dissipation and corrosion and rust prevention are facilitated, and the service life of the anti-loosening double-end stud is long.

Description

Technical Field

[0001] The utility model relates to the technical field of double-headed studs, in particular to an anti-loosening double-headed stud. Background Art

[0002] Studs are cylindrical fasteners with threads on both ends. They are widely used in electric power, chemical industry, oil refining, valves, railways, bridges, steel structures, auto parts, machinery, boiler steel structures, tower cranes, large-span steel structures and large buildings.

[0003] For example, a Chinese utility model patent with authorization announcement number CN219994145U discloses a convenient installation anti-loosening double-headed stud, including a double-headed stud body, one side of the double-headed stud body is provided with a plurality of grooves, the outer side of the double-headed stud body is threadedly connected with a nut, the nut is provided with a hexagonal groove, and a limiting component is installed inside the hexagonal groove; the limiting component includes a hexagonal limiting plate, the hexagonal limiting plate is located inside the hexagonal groove, and a circular through groove is provided on the hexagonal limiting plate. Through a plurality of rotatable limiting blocks, the position between the limiting block and the hexagonal limiting plate can be adjusted to correspond to the hexagonal groove and the groove, so that the hexagonal limiting plate can be accurately inserted into the inside of the hexagonal groove, and then the position between the hexagonal limiting plate and the nut can be limited by the cooperation of the hook and the clamping groove, so that the position of the nut can be limited by the hexagonal limiting plate, thereby effectively preventing loosening.

[0004] However, the existing studs are susceptible to external load vibration, changes, high temperature creep and other factors during use, which causes friction reduction, thereby loosening the threaded connection, making it difficult to dissipate heat and prevent corrosion and rust, and the use effect and life are limited. Therefore, we propose an anti-loosening stud to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an anti-loosening double-ended stud to solve the problem that the existing double-ended stud proposed in the above background technology is susceptible to the influence of external load vibration, change and high-temperature creep of materials during use, resulting in reduced friction, thereby loosening the threaded connection, not being convenient for heat dissipation and corrosion and rust prevention, and having limited use effect and life.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-loosening stud, comprising: a stud body composed of a polished rod and a screw connected to the outer end of the polished rod, a first axial bevel tooth arranged on the inner side of the middle of the stud body, and a fixing sleeve fixedly connected to the outer sides of both ends of the stud body;

[0007] Also includes:

[0008] The first anti-loosening structure and the second anti-loosening structure are respectively arranged on the inner side of the middle part and the outer side of the outer end of the stud body, wherein the first anti-loosening structure includes a first shaft-belt bevel tooth, a second shaft-belt bevel tooth, a movable plate and a rubber pad, and the second anti-loosening structure includes a fixing sleeve, an adjusting sleeve and a pressing rod, and the first shaft-belt bevel tooth is engaged and penetrates the inner side of the middle part of the lower end of the stud body;

[0009] The stud body is provided with a heat dissipation structure inside, wherein the heat dissipation structure includes a first heat dissipation hole and a second heat dissipation hole, and the first heat dissipation hole and the second heat dissipation hole are respectively opened in the bare rod and the screw rod, and the inside of the stud body is composed of a steel pipe, an anti-corrosion layer and an anti-rust layer.

[0010] Preferably, the upper left side and the lower right side of the first shaft bevel tooth are meshedly connected with a symmetrical second shaft bevel tooth, and the second shaft bevel tooth is non-detachably connected to the stud body in a snap-fitting manner, and the outer end of the second shaft bevel tooth is threadedly connected to a movable plate that is snap-fitted with the stud body.

[0011] Preferably, a rubber pad is adhered and fixed to the outer side of the movable plate, and the inner and outer sides of the rubber pad are respectively engaged and connected with the second shaft bevel gear and the stud body.

[0012] Preferably, an adjusting sleeve threadedly connected to the fixing sleeve is nested on the outer side of the fixing sleeve, and a pressure rod located on the outer side of the stud body is symmetrically fixed to the outer end of the adjusting sleeve.

[0013] Preferably, the first heat dissipation hole is interconnected with the second heat dissipation hole, and the second heat dissipation hole is interconnected with the fixing sleeve.

[0014] Preferably, the anti-corrosion layer and the anti-rust layer are sprayed on the outside of the steel pipe in sequence, and the materials of the anti-corrosion layer and the anti-rust layer are polyurethane anti-corrosion coating and sodium nitrite anti-rust coating, respectively.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the anti-loosening stud is convenient for the stud to be closely connected with the to-be-connected piece, and the stud is prevented from loosening, and the nut installed on the stud is prevented from loosening, which is convenient for heat dissipation and anti-corrosion and anti-rust, so that the service life is long;

[0016] 1. A stud body, a first shaft bevel tooth, a second shaft bevel tooth and a movable plate are provided. The first shaft bevel tooth is inserted through the inner side of the middle and lower end of the stud body, and the upper left and upper right sides of the first shaft bevel tooth are meshed and connected with symmetrical second shaft bevel teeth. The second shaft bevel tooth and the movable plate with external threads connected to the second shaft bevel tooth are both engaged and connected with the stud body. A rubber pad located on the inner side of the middle of the outer end of the stud body is pasted and fixed on the outer side of the movable plate. Therefore, the stud is convenient to be closely connected with the member to be connected, and the stud is prevented from loosening.

[0017] 2. A stud body, a fixing sleeve, an adjusting sleeve and a pressing rod are provided. Since the outer side of the stud body is fixedly connected with the fixing sleeve, the outer side of the fixing sleeve is threadedly connected with the adjusting sleeve that symmetrically fixes the pressing rod, and the pressing rod is symmetrically arranged on the outer side of the outer end of the stud body, it is convenient to limit and prevent the nut installed on the stud from loosening;

[0018] 3. A stud body, a first heat dissipation hole, a second heat dissipation hole and a steel pipe are provided. Since the inside of the stud body is provided with a first heat dissipation hole and a second heat dissipation hole which are connected to each other, the second heat dissipation hole is connected to a fixing sleeve fixed outside the stud body, and the inside of the stud body is formed by a steel pipe and an anti-corrosion layer and an anti-rust layer sprayed in sequence on the outside of the steel pipe, it is convenient for heat dissipation and anti-corrosion and anti-rust, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the stud bolt body of the utility model;

[0021] Figure 3 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the overall structure of the adjustment sleeve and the pressure rod connected to the utility model.

[0023] In the figure: 1. stud body; 2. bare rod; 3. screw rod; 4. first axial bevel gear; 5. second axial bevel gear; 6. movable plate; 7. rubber pad; 8. fixing sleeve; 9. adjusting sleeve; 10. pressure rod; 11. first heat dissipation hole; 12. second heat dissipation hole; 13. steel pipe; 14. anti-corrosion layer; 15. anti-rust layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4The utility model provides a technical solution: a stud bolt for preventing loosening, comprising a stud bolt body 1, a bare rod 2, a screw rod 3, a first cone tooth with an axis 4, a second cone tooth with an axis 5, a movable plate 6, a rubber pad 7, a fixing sleeve 8, an adjusting sleeve 9, a pressing rod 10, a first heat dissipation hole 11, a second heat dissipation hole 12, a steel pipe 13, an anti-corrosion layer 14 and an anti-rust layer 15. When the stud bolt for preventing loosening is used, Figure 1 and Figure 3 First, the stud body 1 composed of the bare rod 2 and the screw rod 3 can be nested and installed in the part to be connected, so that the bare rod 2 is located on the inner side of the middle part of the connecting part, and then the first shaft bevel gear 4 that penetrates through the inner side of the outer end of the stud body 1 can be rotated to make the first shaft bevel gear 4 rotate under the clamping limit of the stud body 1. Since the upper left and upper right sides of the first shaft bevel gear 4 are meshed and connected with the symmetrically arranged second shaft bevel gear 5, the second shaft bevel gear 5 is clamped and connected to the outside of the stud body 1 and cannot be detached, and the outer side of the second shaft bevel gear 5 A movable plate 6 is threadedly connected to the stud body 1, and a rubber pad 7 located on the inner side of the middle part of the outer end of the stud body 1 is glued and fixed to the movable plate 6. Therefore, by rotating the first shaft bevel gear 4, it is convenient for the second shaft bevel gear 5 to drive the movable plate 6 connected with its external thread to move under the limit of the stud body 1, so that the movable plate 6 drives the rubber pad 7 to move outward, so that the rubber pad 7 is closely fitted to the connecting piece, so as to achieve the purpose of closely fitting the stud and the to-be-connected piece and preventing the stud from loosening;

[0026] like Figure 1 , Figure 3 and Figure 4 Then, the nut can be threadedly connected and installed on the outside of the screw rods 3 at both ends of the stud body 1, so that the inner side of the nut is tightly connected with the connecting piece, and the connecting piece is locked and fixed, and then the adjusting sleeve 9 of the outer symmetrical fixed pressure rod 10 can be threadedly connected to the outside of the fixing sleeve 8 fixedly connected to the outside of the stud body 1, until the pressure rod 10 located on the outer side of the outer end of the stud body 1 is fitted and arranged outside the nut, so as to facilitate the purpose of limiting and preventing the nut installed on the stud from loosening, so that the stud has a good use effect;

[0027] like Figure 1 , Figure 2 and Figure 3During the use of the stud, a first heat dissipation hole 11 located in the polished rod 2 is symmetrically opened inside the middle part of the stud body 1, and a second heat dissipation hole 12 located in the screw 3 is symmetrically opened inside the outer end of the stud body 1, and the first heat dissipation hole 11 is connected to the second heat dissipation hole 12, and the second heat dissipation hole 12 is connected to the fixing sleeve 8 fixed outside the stud body 1, so it is convenient to dissipate heat for the stud through the first heat dissipation hole 11 and the second heat dissipation hole 12, and the interior of the stud body 1 is composed of a steel pipe 13, an anti-corrosion layer 14 and an anti-rust layer 15, and the anti-corrosion layer 14 and the anti-rust layer 15 sprayed on the outside of the steel pipe 13 are polyurethane anti-corrosion coating and sodium nitrite anti-rust coating respectively, so it is convenient to prevent corrosion and rust for the stud, so as to prolong its service life. The above components are all prior art and will not be described in detail here.

[0028] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-loosening stud, comprising: A stud body (1) consisting of a bare rod (2) and a screw rod (3) connected to the outer end of the bare rod (2), a first axial bevel tooth (4) arranged on the inner side of the middle of the stud body (1), and a fixing sleeve (8) fixedly connected to the outer sides of both ends of the stud body (1); It is characterized by further comprising: A first anti-loosening structure and a second anti-loosening structure are respectively arranged on the inner side of the middle part and the outer side of the outer end of the stud body (1), wherein the first anti-loosening structure comprises a first axial bevel tooth (4), a second axial bevel tooth (5), a movable plate (6) and a rubber pad (7), and the second anti-loosening structure comprises a fixing sleeve (8), an adjusting sleeve (9) and a pressing rod (10), and the first axial bevel tooth (4) is engaged and penetrates the inner side of the middle part of the lower end of the stud body (1); The stud body (1) is provided with a heat dissipation structure inside, wherein the heat dissipation structure comprises a first heat dissipation hole (11) and a second heat dissipation hole (12), and the first heat dissipation hole (11) and the second heat dissipation hole (12) are respectively opened in the bare rod (2) and the screw rod (3), and the interior of the stud body (1) is composed of a steel pipe (13), an anti-corrosion layer (14) and an anti-rust layer (15).

2. The anti-loosening stud according to claim 1, characterized in that: The upper left side and the lower right side of the first shaft bevel tooth (4) are meshedly connected with symmetrical second shaft bevel teeth (5), and the second shaft bevel teeth (5) are non-detachably connected to the stud body (1) in a snap-fitting manner, and the outer side of the outer end of the second shaft bevel tooth (5) is threadedly connected with a movable plate (6) that is snap-fitted with the stud body (1).

3. The anti-loosening stud according to claim 1, characterized in that: A rubber pad (7) is glued and fixed to the outer side of the movable plate (6), and the inner and outer sides of the rubber pad (7) are respectively engaged and connected with the second shaft-belted bevel gear (5) and the stud body (1).

4. The anti-loosening stud according to claim 1, characterized in that: An adjusting sleeve (9) threadedly connected thereto is nested on the outer side of the fixing sleeve (8), and a pressing rod (10) located on the outer side of the stud body (1) is symmetrically fixed to the outer end of the adjusting sleeve (9).

5. The anti-loosening stud according to claim 1, characterized in that: The first heat dissipation hole (11) and the second heat dissipation hole (12) are interconnected, and the second heat dissipation hole (12) and the fixing sleeve (8) are interconnected.

6. The anti-loosening stud according to claim 1, characterized in that: The anti-corrosion layer (14) and the anti-rust layer (15) are sprayed on the outside of the steel pipe (13) in sequence, and the materials of the anti-corrosion layer (14) and the anti-rust layer (15) are polyurethane anti-corrosion coating and sodium nitrite anti-rust coating respectively.

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