CN219691935U

CN219691935U - Expansion bolt

Info

Publication number: CN219691935U
Application number: CN202320684015.9U
Authority: CN
Inventors: 翁连弟
Original assignee: Zhejiang Youwei Fastener Co ltd
Current assignee: Zhejiang Youwei Fastener Co ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-09-15
Anticipated expiration: 2033-03-31

Abstract

The utility model discloses an expansion bolt which comprises a movable sleeve, wherein a threaded rod is arranged in an inner cavity of the movable sleeve, the right side of the threaded rod penetrates through the inner cavity of the movable sleeve and extends to the outside of the movable sleeve, a lug is fixedly connected to the right side of the threaded rod, and a hexagonal nut is connected to the left side of the threaded rod in a threaded manner. According to the utility model, through the cooperation of the movable sleeve, the threaded rod, the convex block, the hexagonal nut and the convex block, the problems that in the use process of the traditional expansion bolt, the structure is single, concrete at a stress point is likely to fall off and the bolt is loose or the pipe wall is deformed and the like can be solved, and the expansion bolt has the effect of improving the installation stability, increases the stress point, shares acting force, effectively prolongs the service life of the bolt, simultaneously expands the whole bolt in the bolt hole, increases the firmness and the reliability of the bolt and reduces the loosening phenomenon caused by movement.

Description

Expansion bolt

Technical Field

The utility model relates to the technical field of expansion bolts, in particular to an expansion bolt.

Background

The expansion bolt is a special threaded connecting piece for fixing a pipeline bracket, a hanging bracket, a bracket or equipment on a wall, a floor slab or a column, when in use, an impact electric drill (hammer) is used for drilling holes with corresponding sizes on a fixed body, then the bolt and an expansion pipe are arranged in the holes, the bolt body is screwed to expand the bolt, the expansion pipe, an installation piece and the fixed body into a whole, so as to achieve the aim of fixing and rooting,

for example, the utility model in China provides an expansion bolt, and the bulletin number is: CN204284134U, comprising: the screw rod comprises a fixed part arranged at the lower end and an expansion part arranged at the upper end, an opening expansion groove is formed in the upper end face of the expansion part, and the cross section of the expansion groove is V-shaped; a tension member engaged with the expansion groove, and the Zhang Lijian is a wedge structure; the nut is provided with an internal thread, and the fixing part is provided with an external thread matched with the internal thread; the size of the tension piece is larger than that of the expansion groove; the width of the maximum cross section of the tension is at least one third of the diameter of the cross section of the expansion; the ratio of the length of the expansion portion to the length of the fixing portion is 1:2. The utility model provides an expansion bolt, which has the advantages of simple structure, time and material saving in a processing technology, but the expansion bolt in the patent has a single structure in the using process, and can cause the conditions of loosening of the bolt or deformation of the pipe wall due to the falling of concrete at a stress point or the like when the expansion bolt is used for a long time.

Disclosure of Invention

The utility model aims to provide an expansion bolt, which has the advantage of improving the installation stability, and solves the problems that the expansion bolt has a single structure in the use process, and concrete at a stress point can fall off to cause loosening of the bolt or deformation of a pipe wall and the like under long-time use.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an expansion bolts, includes the movable sleeve, the inner chamber of movable sleeve is provided with the threaded rod, the right side of threaded rod runs through the inner chamber of movable sleeve and extends to the outside of movable sleeve, the right side fixedly connected with lug of threaded rod, the left side threaded connection of threaded rod has hexagonal nut, the equal fixedly connected with arch in top and bottom of movable sleeve inner chamber.

Preferably, the protrusion has a triangular structure, and one side of the protrusion is in contact with the threaded rod.

Preferably, the surface of the movable sleeve is provided with an anti-corrosion layer, and the anti-corrosion layer is treated in an electrogalvanizing mode.

Preferably, the right side of the movable sleeve is provided with four long grooves, and the four long grooves are distributed at equal intervals.

Preferably, a flat washer is arranged on the left side of the movable sleeve, and one side of the flat washer is in contact with the hexagonal nut.

Preferably, the protruding block is a conical body, and the protruding block and the threaded rod are of an integrated structure.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, through the cooperation of the movable sleeve, the threaded rod, the convex block, the hexagonal nut and the convex block, the problems that in the use process of the traditional expansion bolt, the structure is single, concrete at a stress point is likely to fall off and the bolt is loose or the pipe wall is deformed and the like can be solved, and the expansion bolt has the effect of improving the installation stability, increases the stress point, shares acting force, effectively prolongs the service life of the bolt, simultaneously expands the whole bolt in the bolt hole, increases the firmness and the reliability of the bolt and reduces the loosening phenomenon caused by movement.

2. According to the utility model, the friction force between the movable sleeve and the threaded rod can be increased by arranging the protrusions, the shrinkage possibility of the movable sleeve is reduced, so that the installation stability is improved, the anticorrosive effect of the surface of the expansion bolt can be effectively ensured by arranging the anticorrosive layer and adopting the electrogalvanizing treatment mode, the movable sleeve can be conveniently unfolded by arranging the long grooves, the fastening purpose is achieved, the friction force can be improved by arranging the flat washers, the stability of the expansion bolt is ensured, and the movable sleeve can be expanded by arranging the convex blocks.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the internal structure of the activity sleeve of the present utility model;

FIG. 3 is a schematic diagram of the composition structure of the movable sleeve and the anti-corrosive layer of the present utility model.

In the figure: 1. a movable sleeve; 2. a threaded rod; 3. a bump; 4. a hexagonal nut; 5. a protrusion; 6. an anti-corrosion layer; 7. a long groove; 8. and (3) a flat gasket.

Description of the embodiments

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. 1-3, an expansion bolt comprises a movable sleeve 1, wherein a threaded rod 2 is arranged in an inner cavity of the movable sleeve 1, the right side of the threaded rod 2 penetrates through the inner cavity of the movable sleeve 1 and extends to the outside of the movable sleeve 1, a lug 3 is fixedly connected to the right side of the threaded rod 2, a hexagonal nut 4 is connected to the left side of the threaded rod 2 in a threaded manner, a boss 5 is fixedly connected to the top and the bottom of the inner cavity of the movable sleeve 1, and the threaded rod 2, the lug 3, the hexagonal nut 4 and the boss 5 are matched for use, so that the problems that in the use process of the traditional expansion bolt, the structure is single, the concrete at a stress point possibly falls off to cause loosening of the bolt or deformation of a pipe wall and the like can be effectively solved.

The protrusion 5 has a triangular structure, and one side of the protrusion 5 is in contact with the threaded rod 2.

Through above-mentioned technical scheme, through setting up protruding 5, can increase the frictional force with threaded rod 2, reduce the possibility of movable sleeve 1 shrink to the installation steadiness has been improved.

The surface of the movable sleeve 1 is provided with an anti-corrosion layer 6, and the anti-corrosion layer 6 is treated in an electrogalvanizing way.

Through above-mentioned technical scheme, through setting up anticorrosive coating 6, adopt the treatment method of electrogalvanizing, can effectively guarantee the anticorrosive effect on this expansion bolts surface.

The right side of the movable sleeve 1 is provided with four long grooves 7, and the four long grooves 7 are distributed at equal intervals.

Through above-mentioned technical scheme, through setting up elongated slot 7, can make things convenient for movable sleeve 1 to prop open, reach the purpose of fastening.

The left side of the movable sleeve 1 is provided with a flat washer 8, and one side of the flat washer 8 is contacted with the hexagonal nut 4.

Through above-mentioned technical scheme, through setting up plain washer 8, can improve frictional force, guaranteed this expansion bolts's stability.

The protruding block 3 is a cone, and the protruding block 3 and the threaded rod 2 are of an integrated structure.

Through above-mentioned technical scheme, through setting up lug 3, can expand movable sleeve 1.

During the use, through protruding 5, can increase the frictional force with threaded rod 2, reduce the possibility of movable sleeve 1 shrink to improved the installation steadiness, through anticorrosive coating 6, adopt electrogalvanizing's processing method, can effectively guarantee the anticorrosive effect on this expansion bolts surface, through elongated slot 7, can make things convenient for movable sleeve 1 to prop open, reach the purpose of fastening, through flat washer 8, can improve frictional force, guaranteed the stability of this expansion bolts, through lug 3, can expand movable sleeve 1.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An expansion bolt, comprising a movable sleeve (1), characterized in that: the inner cavity of movable sleeve (1) is provided with threaded rod (2), the right side of threaded rod (2) runs through the inner cavity of movable sleeve (1) and extends to the outside of movable sleeve (1), the right side fixedly connected with lug (3) of threaded rod (2), the left side threaded connection of threaded rod (2) has hexagon nut (4), the top and the equal fixedly connected with arch (5) in bottom of movable sleeve (1) inner cavity.

2. An expansion bolt according to claim 1, wherein: the protrusion (5) is of a triangular structure, and one side of the protrusion (5) is in contact with the threaded rod (2).

3. An expansion bolt according to claim 1, wherein: the surface of the movable sleeve (1) is provided with an anti-corrosion layer (6), and the anti-corrosion layer (6) is treated in an electrogalvanizing mode.

4. An expansion bolt according to claim 1, wherein: the right side of the movable sleeve (1) is provided with four long grooves (7), and the four long grooves (7) are distributed at equal intervals.

5. An expansion bolt according to claim 1, wherein: the left side of movable sleeve (1) is provided with plain washer (8), one side of plain washer (8) and hex nut (4) contact.

6. An expansion bolt according to claim 1, wherein: the lug (3) is a conical body, and the lug (3) and the threaded rod (2) are of an integrated structure.