CN213088429U

CN213088429U - Reinforced expansion bolt

Info

Publication number: CN213088429U
Application number: CN202020814314.6U
Authority: CN
Inventors: 潘李林; 王宏桥; 李庆霞
Original assignee: Qida Rail Transit Technology Co Ltd
Current assignee: Qida Rail Transit Technology Co Ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-04-30
Anticipated expiration: 2030-05-15

Abstract

The utility model discloses a reinforcement type expansion bolts relates to bolt production technical field. The utility model discloses a double-screw bolt, nail body, sleeve, nut, spring washer and plain washer, double-screw bolt one end are fixed with the spliced pole, and the spliced pole other end is fixed with a set of axisymmetric distribution's first inflation section, and the first inflation section other end is fixed with the second inflation section, and double-screw bolt and spliced pole axis department have all opened first through-hole. The utility model discloses a to nail body pressurization for the nail body moves down, thereby drive a set of first inflation section and a set of second inflation section inflation, make this expansion bolts can tentatively fix in drilling, effectually avoided the sleeve to take place the problem of rotation in follow-up installation, the swivel nut, make the nut drive the sleeve to inside the removal of drilling, thereby make a set of third inflation section inflation on the sleeve, make this expansion bolts expansibility further strengthen, thereby better fixing inside the drilling.

Description

Reinforced expansion bolt

Technical Field

The utility model belongs to the technical field of the bolt production, especially, relate to a reinforcement type expansion bolts.

Background

An expansion bolt is a special screw connector for fixing pipeline branch, hanger, bracket or equipment on wall, floor and column. The traditional expansion bolt has a very simple structure, the expansion sleeve has a very smooth surface, and the expansion bolt is suitable for small-sized workpieces and occasions with low requirements and is mainly used for civil products, decoration and construction industries. However, with the development and progress of the society, the expansion bolt with a simple structure can not meet the requirements of practical application gradually, because when the expansion bolt is installed and fixed, the smooth expansion pipe sleeve is easy to loosen and slide, so that the problem of infirm fixation, easy falling and safety accidents is caused easily, and because the outer wall of the expansion pipe sleeve is too smooth, the nut is easy to drive the whole expansion bolt to rotate in the screwing process, thereby affecting the normal installation of the expansion bolt.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a reinforcement type expansion bolts is through pressurizing the nail body for the nail body moves down, thereby drives a set of first inflation section and a set of second inflation section inflation, makes this expansion bolts can tentatively fix in drilling, and the effectual sleeve of having avoided takes place the problem of rotation in follow-up installation.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a reinforced expansion bolt, including double-screw bolt, nail body, sleeve, nut, spring washer and plain washer, double-screw bolt one end is fixed with the spliced pole, the spliced pole other end is fixed with a set of axisymmetric first inflation section that distributes, the first inflation section other end is fixed with the second inflation section, double-screw bolt and spliced pole axis department all open first through-hole, first inflation section one surface is opened has the first slotted hole, second inflation section one surface is opened has the second slotted hole, the nail body and first through-hole inner wall, first slotted hole inner wall and second slotted hole inner wall all clearance fit; the sleeve is sleeved on a connecting body formed by combining the stud and the connecting column, a second through hole is formed in one surface of the sleeve, the stud is in clearance fit with the inner wall of the second through hole, a group of third expansion sections which are axially and symmetrically distributed are fixed on the other surface of the sleeve, a third slotted hole and a fourth slotted hole which are communicated with each other are sequentially formed in one surface of the third expansion section from top to bottom, the first expansion section is in clearance fit with the inner wall of the third slotted hole, and the second expansion section is in clearance fit with the inner wall of the fourth slotted hole; threaded connection has the nut on the double-screw bolt, from last spring washer and the plain washer of having cup jointed down in proper order on the double-screw bolt, the plain washer is located directly over the sleeve, the nut is located directly over the spring washer.

Furthermore, the cross section of the first slotted hole is of a semicircular structure, and the cross section of the second slotted hole is of a semicircular cone structure.

Furthermore, the second expansion section and the fourth slot are both in a semicircular table structure, and the cross section of the third slot is in a semicircular structure.

Further, the vertical height of the fourth slot is half of the vertical height of the second expansion section.

The utility model discloses following beneficial effect has:

the utility model discloses a pressurize the nail body, make the nail body move down, thereby drive a set of first inflation section and a set of second inflation section inflation, make this expansion bolts can tentatively fix in drilling, the effectual sleeve of having avoided takes place the problem of rotation in follow-up installation, swivel nut, make the nut drive the sleeve to inside the removal of drilling, thereby make a set of third inflation section inflation on the sleeve, make this expansion bolts expansibility further strengthen, thereby better fixing inside drilling, very big improvement this expansion bolts's fastness and stability, make this expansion bolts obtain effectual reinforcement in fixed process.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a reinforced expansion bolt of the present invention;

FIG. 2 is a front view of the structure of FIG. 1;

FIG. 3 is a schematic structural view of the sleeve, the second through hole, the third expansion section and the third slot;

FIG. 4 is a schematic structural view of a stud, a connecting post, a first expansion segment and a first through hole;

FIG. 5 is a schematic structural view of the nail body;

in the drawings, the components represented by the respective reference numerals are listed below:

1-stud, 2-connecting column, 3-first expansion section, 4-second expansion section, 5-first through hole, 6-first slotted hole, 7-second slotted hole, 8-nail body, 9-sleeve, 10-second through hole, 11-third expansion section, 12-third slotted hole, 13-fourth slotted hole, 14-nut, 15-spring washer and 16-flat washer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention relates to a reinforced expansion bolt, which comprises a stud 1, a nail body 8, a sleeve 9, a nut 14, a spring washer 15 and a plain washer 16, wherein one end of the stud 1 is fixed with a connecting column 2, the other end of the connecting column 2 is fixed with a set of first expansion sections 3 which are distributed axisymmetrically, the other end of the first expansion section 3 is fixed with a second expansion section 4, the axial line of the stud 1 and the axial line of the connecting column 2 are both provided with a first through hole 5, one surface of the first expansion section 3 is provided with a first slot hole 6, one surface of the second expansion section 4 is provided with a second slot hole 7, and the nail body 8 is in clearance fit with the inner wall of the first through hole 5, the inner wall of the first slot hole 6 and the inner;

the sleeve 9 is sleeved on a connecting body formed by combining the stud 1 and the connecting column 2, a second through hole 10 is formed in one surface of the sleeve 9, the stud 1 is in clearance fit with the inner wall of the second through hole 10, a group of third expansion sections 11 which are axially symmetrically distributed are fixed on the other surface of the sleeve 9, a third slotted hole 12 and a fourth slotted hole 13 which are communicated with each other are sequentially formed in one surface of the third expansion section 11 from top to bottom, the first expansion section 3 is in clearance fit with the inner wall of the third slotted hole 12, and the second expansion section 4 is in clearance fit with the inner wall of the fourth slotted hole 13;

the screw bolt 1 is in threaded connection with a nut 14, the screw bolt 1 is sequentially sleeved with a spring washer 15 and a flat washer 16 from top to bottom, the flat washer 16 is located right above the sleeve 9, and the nut 14 is located right above the spring washer 15.

As shown in FIG. 4, the cross section of the first slot 6 is a semicircular structure, and the second slot 7 is a semicircular cone structure.

As shown in fig. 3 and 4, the second expansion section 4 and the fourth slot 13 are both in a semicircular frustum structure, the cross section of the third slot 12 is in a semicircular structure, and the vertical height of the fourth slot 13 is half of the vertical height of the second expansion section 4.

One specific application of this embodiment is: firstly, drilling a hole in a designated position of a wall by using a drilling machine, wherein the drilling depth is slightly larger than the length of the sleeve 9, then placing the sleeve 9 in the drilled hole, then knocking the nail body 8 by using a hammer, knocking the nail body 8 into the stud 1, wherein the other end of the nail body 8 extrudes the second expansion section 4, so that the second expansion section 4 expands and separates to be clamped in the drilled hole, then screwing the nut 14 by an operator, so that the nut 14 drives the sleeve 9 to move towards the inside of the drilled hole, and at the same time, the third expansion section 11 is expanded under the action of the second expansion section 4 to further expand, so that the expansion bolt is firmly fixed in the drilled hole to be used.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a reinforcement type expansion bolts, includes double-screw bolt (1), nail body (8), sleeve (9), nut (14), spring washer (15) and plain washer (16), double-screw bolt (1) one end is fixed with spliced pole (2), its characterized in that:

a group of first expansion sections (3) which are axially symmetrically distributed are fixed at the other end of the connecting column (2), and a second expansion section (4) is fixed at the other end of the first expansion section (3);

the axial lines of the stud (1) and the connecting column (2) are respectively provided with a first through hole (5), one surface of the first expansion section (3) is provided with a first slotted hole (6), one surface of the second expansion section (4) is provided with a second slotted hole (7), and the nail body (8) is in clearance fit with the inner wall of the first through hole (5), the inner wall of the first slotted hole (6) and the inner wall of the second slotted hole (7);

the sleeve (9) is sleeved on a connector formed by combining the stud (1) and the connecting column (2), and a second through hole (10) is formed in one surface of the sleeve (9);

the stud (1) is in clearance fit with the inner wall of the second through hole (10), a group of third expansion sections (11) which are axially symmetrically distributed are fixed on the other surface of the sleeve (9), a third slotted hole (12) and a fourth slotted hole (13) which are communicated with each other are sequentially formed in one surface of each third expansion section (11) from top to bottom, the first expansion section (3) is in clearance fit with the inner wall of the third slotted hole (12), and the second expansion section (4) is in clearance fit with the inner wall of the fourth slotted hole (13);

threaded connection has nut (14) on stud (1), last spring washer (15) and plain washer (16) of having cup jointed down in proper order of stud (1), plain washer (16) are located directly over sleeve (9), nut (14) are located directly over spring washer (15).

2. A reinforced expansion bolt according to claim 1, characterised in that said first slot (6) is of semi-circular configuration in cross-section.

3. A reinforced expansion bolt according to claim 1, characterized in that said second slot (7) is of a semi-conical configuration.

4. A reinforced expansion bolt according to claim 1, characterized in that said second expansion segment (4) and said fourth slot (13) are of a half-truncated-cone type configuration.

5. A reinforced expansion bolt according to claim 1, characterised in that said third slot (12) is of semi-circular configuration in cross-section.

6. A reinforced expansion bolt according to claim 1, characterized in that the vertical height of said fourth slot (13) is half the vertical height of the second expansion section (4).