CN222391734U

CN222391734U - Anti-loosening double-head stud

Info

Publication number: CN222391734U
Application number: CN202421468523.4U
Authority: CN
Inventors: 胡荣; 刘树代
Original assignee: Ningbo Ninghe Power Locomotive Parts Co ltd
Current assignee: Ningbo Ninghe Power Locomotive Parts Co ltd
Priority date: 2024-06-26
Filing date: 2024-06-26
Publication date: 2025-01-24
Anticipated expiration: 2034-06-26

Abstract

The utility model discloses an anti-loosening stud which comprises a stud body, a first shaft-carrying bevel gear, a fixed sleeve and a first anti-loosening structure, wherein the stud body is formed by a polished rod and a connecting screw rod at the outer end of the polished rod, the first shaft-carrying bevel gear is arranged at the inner side of the middle part of the stud body, the outer sides of the two ends of the stud body are fixedly connected, the first anti-loosening structure and the second anti-loosening structure are respectively arranged at the inner side of the middle part of the stud body and the outer side of the outer end of the stud body, the first anti-loosening structure comprises the first shaft-carrying bevel gear, the second shaft-carrying bevel gear, a movable plate and a rubber pad, the second anti-loosening structure comprises the fixed sleeve, an adjusting sleeve and a pressing rod, and a heat dissipation structure is arranged in the stud body, and comprises a first heat dissipation hole and a second heat dissipation hole. The anti-loosening double-end stud is convenient for enabling the double-end stud to be tightly attached to a to-be-connected piece, loosening-preventing is carried out on the double-end stud, limiting loosening-preventing is carried out on nuts installed on the double-end stud, heat dissipation, corrosion prevention and rust prevention are facilitated, and the service life of the anti-loosening double-end stud is long.

Description

Anti-loosening double-end stud

Technical Field

The utility model relates to the technical field of studs, in particular to a locking stud.

Background

The stud refers to a cylindrical fastener with threads at two ends, and is widely applied to electric power, chemical industry, oil refining, valves, railways, bridges, steel structures, steam friction accessories, machinery, boiler steel structures, hanging towers, large-span steel structures, large-scale buildings and the like.

The utility model discloses a locking stud convenient to install, which comprises a stud body, wherein one side of the stud body is provided with a plurality of grooves, the outer side of the stud body is connected with a nut in a threaded manner, a hexagonal groove is formed in the nut, a limiting component is arranged in the hexagonal groove, the limiting component comprises a hexagonal limiting plate, the hexagonal limiting plate is positioned in the hexagonal groove, a circular through groove is formed in the hexagonal limiting plate, the positions between the limiting block and the hexagonal limiting plate can be adjusted through a plurality of limiting blocks capable of rotating to correspond to the hexagonal groove and the grooves, so that the hexagonal limiting plate can be accurately inserted into the hexagonal groove, then the position between the hexagonal limiting plate and the nut can be limited through the cooperation of a clamping hook and the clamping groove, and the nut can be effectively prevented from loosening through the limiting operation of the hexagonal limiting plate on the position.

However, in the use process of the existing stud, the friction force is easily reduced due to the influence of external load vibration, change, high-temperature creep of materials and other factors, so that the threaded connection is loosened, heat dissipation, corrosion prevention and rust prevention are inconvenient, and the service effect and the service life are limited.

Disclosure of utility model

The utility model aims to provide a locking stud, which aims to solve the problems that in the prior art, the existing stud is easily affected by external load vibration, change, high-temperature creep of materials and other factors to cause friction force reduction in the use process, so that threaded connection is loosened, heat dissipation, corrosion prevention and rust prevention are inconvenient, and the use effect and service life are limited.

The anti-loosening stud comprises a stud body formed by a polished rod and a connecting screw rod at the outer end of the polished rod, a first conical tooth with a shaft arranged at the inner side of the middle part of the stud body, and a fixing sleeve fixedly connected with the outer sides of the two ends of the stud body;

Further comprises:

The inner side of the middle part of the double-end stud body and the outer side of the outer end of the double-end stud body are respectively provided with a first anti-loosening structure and a second anti-loosening structure, wherein the first anti-loosening structure comprises a first belt shaft conical tooth, a second belt shaft conical tooth, a movable plate and a rubber pad, the second anti-loosening structure comprises a fixed sleeve, an adjusting sleeve and a pressing rod, and the first belt shaft conical tooth is clamped and penetrated into the inner side of the middle part of the lower end of the double-end stud body;

The inside of stud body is provided with heat radiation structure, and wherein heat radiation structure is including first louvre and second louvre, and first louvre and second louvre are seted up respectively in polished rod and the screw rod to the inside of stud body constitutes through steel pipe, anticorrosive coating and rust protection layer.

Preferably, the upper left side and the lower right side of the first shaft-carrying conical tooth are connected with symmetrical second shaft-carrying conical teeth in a meshed mode, the second shaft-carrying conical teeth are in clamping and non-detachable connection with the stud body, and the outer side of the outer end of the second shaft-carrying conical tooth is connected with a movable plate clamped with the stud body in a threaded mode.

Preferably, a rubber pad is stuck and fixed on the outer side of the movable plate, and the inner side and the outer side of the rubber pad are respectively connected with the second conical tooth with the shaft and the stud body in a clamping mode.

Preferably, an adjusting sleeve in threaded connection with the fixing sleeve is nested outside the fixing sleeve, and a pressing rod positioned outside the stud body is symmetrically fixed at the outer end of the adjusting sleeve.

Preferably, the first heat dissipation hole is connected with the second heat dissipation hole in a communicating way, and the second heat dissipation hole is connected with the fixing sleeve in a communicating way.

Preferably, the anticorrosive layer and the antirust layer are sequentially sprayed outside the steel pipe, and the anticorrosive layer and the antirust layer are respectively made of polyurethane anticorrosive paint and sodium nitrite antirust paint.

Compared with the prior art, the anti-loosening stud has the beneficial effects that the anti-loosening stud is convenient for tightly attaching and connecting the stud and a piece to be connected, the stud is anti-loosening, nuts arranged on the stud are convenient for limiting and loosening, heat dissipation, corrosion prevention and rust prevention are convenient, and the service life is long;

1. The double-end stud is provided with a double-end stud body, a first shaft-carrying bevel gear, a second shaft-carrying bevel gear and a movable plate, because the inner side of the middle lower end of the double-end stud body is clamped and penetrated with the first shaft-carrying bevel gear, the upper left side and the upper right side of the first shaft-carrying bevel gear are connected with symmetrical second shaft-carrying bevel gears in a meshed manner, the second shaft bevel gear and the movable plate which is in external threaded connection with the second shaft bevel gear are in clamping connection with the stud body, and a rubber pad positioned on the inner side of the middle part of the outer end of the stud body is stuck and fixed on the outer side of the movable plate, so that the stud and a piece to be connected are conveniently and tightly attached to each other, and the stud is prevented from loosening;

2. The screw bolt is provided with a screw bolt body, a fixing sleeve, an adjusting sleeve and a pressing rod, wherein the fixing sleeve is fixedly connected to the outer side of the screw bolt body, the adjusting sleeve symmetrically fixing the pressing rod is connected to the outer side of the fixing sleeve in a threaded manner, and the pressing rod is symmetrically arranged on the outer side of the outer end of the screw bolt body, so that a nut arranged on the screw bolt is conveniently limited and prevented from loosening;

3. The novel anti-rust stud comprises a stud body, a first heat dissipation hole, a second heat dissipation hole and a steel pipe, wherein the first heat dissipation hole and the second heat dissipation hole are formed in the stud body, the first heat dissipation hole and the second heat dissipation hole are communicated, the second heat dissipation hole is connected with a fixed sleeve fixed outside the stud body in a communicated mode, and the interior of the stud body is formed by an anti-corrosion layer and an anti-rust layer which are sequentially sprayed outside the steel pipe and the steel pipe, so that heat dissipation, corrosion prevention and rust prevention are facilitated, and the service life is long.

Drawings

FIG. 1 is a schematic elevational view of the present utility model;

FIG. 2 is a schematic view of the internal structure of the stud body of the present utility model;

FIG. 3 is a schematic cross-sectional elevation view of the present utility model;

Fig. 4 is a schematic diagram of the overall structure of the connection between the adjusting sleeve and the pressing rod.

In the figure, 1, a stud body, 2, a polished rod, 3, a screw rod, 4, a first conical tooth with a shaft, 5, a second conical tooth with a shaft, 6, a movable plate, 7, a rubber pad, 8, a fixed sleeve, 9, an adjusting sleeve, 10, a pressing rod, 11, a first heat dissipation hole, 12, a second heat dissipation hole, 13, a steel pipe, 14, an anticorrosive layer, 15 and a rust-proof layer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: when the anti-loosening stud is used, as shown in fig. 1 and 3, firstly, the stud body 1 formed by the polish rod 2 and the screw rod 3 can be nested and installed in a piece to be connected, the polish rod 2 is positioned on the inner side of the middle part of the piece to be connected, then the inner side of the outer end of the rotatable stud body 1 is clamped and penetrated with the first belt shaft conical tooth 4, the first belt shaft conical tooth 4 rotates under the clamping limit of the stud body 1, and the second belt shaft conical tooth 5 is in non-detachable connection with the outer side of the stud body 1 due to the fact that the upper left side and the upper right side of the first belt shaft conical tooth 4 are in meshed connection with the second belt shaft conical tooth 5 which is symmetrically arranged, and the second belt shaft conical tooth 5 is in external threaded connection with the outer side of the stud body 1 and is clamped with the outer side of the second belt shaft conical tooth 6, so that the outer side of the stud body is in tight fit with the outer side of the movable plate 6, and the threaded connection with the second belt shaft conical tooth 7 is convenient to enable the second belt shaft conical tooth 4 to be in tight fit with the middle part of the piece to be connected, and the outer end of the stud body to be connected with the outer side of the movable plate 6 is in tight fit with the outer end of the stud body 1, and the threaded connection with the outer end of the stud body is convenient to be connected with the outer side of the movable plate 6;

As shown in fig. 1, 3 and 4, the nut is then screwed on the outer side of the screw 3 at the two ends of the stud body 1, so that the inner side of the nut is tightly attached to the connecting piece, the connecting piece is locked and fixed, and the adjusting sleeve 9 of the outer side symmetrical fixing pressing rod 10 is screwed outside the fixing sleeve 8 fixedly connected with the outer side of the stud body 1 until the pressing rod 10 positioned outside the outer end of the stud body 1 is attached to the outer side of the nut, thereby being convenient for limiting and preventing the nut mounted on the stud and achieving the purpose of good use effect of the stud;

As shown in fig. 1, fig. 2 and fig. 3, in the process of using the stud, the first heat dissipation hole 11 located in the polish rod 2 is symmetrically formed in the middle of the stud body 1, the second heat dissipation hole 12 located in the screw rod 3 is symmetrically formed in the outer end of the stud body 1, the first heat dissipation hole 11 is in communication connection with the second heat dissipation hole 12, and the second heat dissipation hole 12 is in communication connection with the fixed sleeve 8 fixed outside the stud body 1, so that the stud is conveniently cooled through the arrangement of the first heat dissipation hole 11 and the second heat dissipation hole 12, and is formed by the steel pipe 13, the anti-corrosion layer 14 and the anti-rust layer 15 inside the stud body 1, and the anti-corrosion layer 14 and the anti-rust layer 15 sequentially sprayed outside the steel pipe 13 are respectively made of polyurethane anti-corrosion paint and sodium nitrite anti-rust paint, so that the stud is convenient to be anti-corrosion and rust, so that the service life of the stud is long, and the above contained elements are all the prior art, and are not detailed herein.

The details not described in detail in the specification belong to the prior art known to the person skilled in the art, standard parts used in the utility model can be purchased from market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that the details not described in detail in the specification belong to the prior art known to the person skilled in the art.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. An anti-loosening stud, comprising: a stud body (1) consisting of a polished rod (2) and a screw rod (3) connected to the outer end of the polished 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. An anti-loosening double-headed stud according to claim 1, characterized in that: the upper left side and the lower right side of the first shaft-belt bevel tooth (4) are meshedly connected with a symmetrical second shaft-belt bevel tooth (5), and the second shaft-belt bevel tooth (5) is non-detachably connected to the double-headed stud body (1), and the outer end of the second shaft-belt bevel tooth (5) is threadedly connected to a movable plate (6) that is engaged with the double-headed stud body (1).

3. An anti-loosening stud according to claim 1, characterized in that a rubber pad (7) is adhered 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 bevel gear (5) and the stud body (1).

4. An anti-loosening stud according to claim 1, characterized in that an adjustment sleeve (9) threadedly connected to the fixing sleeve (8) is nested on the outer side of the fixing sleeve (8), and a pressure rod (10) located on the outer side of the stud body (1) is symmetrically fixed to the outer end of the adjustment 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. An anti-loosening double-head 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.