CN111594520A

CN111594520A - Novel expansion bolts of multipurpose

Info

Publication number: CN111594520A
Application number: CN201910884222.7A
Authority: CN
Inventors: 李宝彦
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-08-28

Abstract

The invention discloses a novel multipurpose expansion bolt which comprises a screw rod, a sleeve, a washer, a spring gasket and a nut, wherein the nut is matched with threads on the screw rod, and the sleeve is sleeved on the screw rod. The method is characterized in that: the expansion piece is inserted into two adjacent bosses, so that the bosses block the expansion pieces and have a guiding function. The expansion head is composed of the conical head and the boss, and the expansion head is connected with the screw rod to form an expansion rod. The expansion pipe is formed by the sleeve and the expansion sheet, the expansion pipe is additionally provided with a gasket, technical breakthrough is realized, the expansion pipe can be used for mounting and dismounting hollow pipe walls such as steel structures, aluminum alloy structures, stainless steel and the like, can also be used for mounting and dismounting square pipes, angle steel, H-shaped steel, channel steel and composite plates, and is also suitable for mounting and dismounting cement masonry walls. Therefore, the expansion bolt is a novel multipurpose expansion bolt.

Description

Novel expansion bolts of multipurpose

The technical field is as follows: the invention relates to a connecting fastener, in particular to a multipurpose novel expansion bolt.

Background art: at present, the domestic common expansion bolt is mainly used for connecting concrete structures and consists of a sleeve, a screw rod, a gasket, a spring pad and a nut. The screw and the sleeve are not well matched, the screw slips when the nut is locked sometimes, the sleeve slips together sometimes, and even the sleeve is extruded by the screw sometimes, so that the sleeve is not expanded, secondary installation is needed again, and the working efficiency is influenced. The connection of being used in steel construction class hollow member such as square pipe, steel pipe also can't realize, hardly takes out after the installation moreover, and the wall can spill a very long section threaded rod, brings the potential safety hazard, the outward appearance is not pleasing to the eye.

The invention content is as follows: aiming at the problems in the prior art, the invention provides a novel multipurpose expansion bolt. It has the characteristics of guiding function; outward rotation and locking; the stress intensity is high; the device is detachable and has beautiful appearance; preventing slipping; multiple uses, etc.

In order to achieve the purpose, the multipurpose novel expansion bolt comprises a screw rod, a sleeve, a washer, a spring gasket and a nut, wherein the nut is matched with threads on the screw rod, and the sleeve is sleeved on the screw rod. The method is characterized in that: the expansion piece is inserted into two adjacent bosses, so that the bosses block the expansion pieces and have a guiding function.

Furthermore, the conical head is conical, the boss and the expansion sheet are uniformly distributed, and the conical head is integrally connected with the boss.

Furthermore, the other end of the screw is provided with a polygon formed by more than two platforms for fixing a wrench.

Further, the head of the sleeve is provided with a gasket matched with the inner diameter of the sleeve.

Furthermore, the conical head, the expansion sheet and the boss can be provided with chamfers or fillets and can also be provided with conicity.

Furthermore, one side of the gasket on the sleeve is provided with a chamfer or a fillet, and the sleeve and the gasket are integrally connected or detachably connected in a combined manner.

Furthermore, a gasket on the sleeve is provided with a polygon consisting of more than two platforms.

Furthermore, the sleeve and the gasket are connected in a detachable and combined mode, and knurling (or indentation) matching is arranged on the joint and connection part of the sleeve and the gasket, so that the gasket can block the sleeve and prevent the sleeve from rotating.

The multipurpose expansion bolt is characterized in that the bolt is inserted into a hole of a mounting component from the deep part and the exposed surface is the outer part, the screw rod moves from the inside to the outside and moves from the outside to the inside relative to the nut, the head part of the screw rod is exposed outside, and the nut is arranged outside the component, so that outward screwing and locking are realized. The conical head is provided with a plurality of bosses, and the conical head, the bosses and the screw form an expansion rod. The sleeve is provided with a plurality of expansion sheets, and the sleeve and the expansion sheets form an expansion pipe. The expansion pipe is additionally provided with the gasket to realize technical breakthrough, is mainly used for mounting hollow pipe walls of steel structures, aluminum alloy structures, stainless steel structures and the like, and is particularly suitable for mounting square pipes, angle steel, H-shaped steel, channel steel and composite plates.

Description of the drawings:

the following is further described with reference to the accompanying drawings and examples.

FIG. 1 is a schematic view of an expansion link (1) of a multipurpose novel expansion bolt of the present invention

FIG. 2 is a schematic view of the expansion rod (2) of the novel multipurpose expansion bolt of the present invention

FIG. 3 is a schematic view of the expansion pipe (1) of the novel multipurpose expansion bolt of the present invention

FIG. 4 is a schematic view of the expansion pipe (2) of the novel multipurpose expansion bolt of the present invention

FIG. 5 is a schematic view of the expansion pipe (3) of the novel multipurpose expansion bolt of the present invention

FIG. 6 is a schematic view of the installation of the multipurpose expansion bolt of the present invention

FIG. 7 is a schematic view of the structure of a multipurpose expansion bolt of the present invention

In the figure: 1-conical head 2-boss 3-screw 4-expansion sheet 5-sleeve 6-washer 7-spring washer 8-nut 11-chamfer 12-platform 14-component (1) 15-component (2) 20-taper 21-smooth curved surface transition

Wherein FIG. 7 is also taken as an abstract figure

The multipurpose novel expansion bolt provided by the invention overcomes the defects of the prior art, is simple and practical, is mainly used for mounting hollow pipe walls such as steel structures, aluminum alloy structures, stainless steel and the like, is particularly suitable for mounting square pipes, angle steel, H-shaped steel, channel steel and composite plates, and is also suitable for mounting masonry cement walls. (see fig. 6).

The multipurpose novel expansion bolt consists of a nut, an expansion pipe (1), an expansion rod (1) and a spring gasket (as shown in figure 7), and the conical heads can be provided with conical degrees or smooth curved surface transition. (note: several means two or more).

Constitute expansion head by conical head and boss, expansion head and screw rod body coupling constitute expansion link (1), its characterized in that: the conical head and the boss can be provided with (chamfer or fillet) and also can be provided with conical degree or smooth curved surface transition, and the shapes are various (as shown in figure 1).

The expansion head is formed by integrally connecting a conical head and a boss, and the expansion head and the screw rod are connected in a disassembling and assembling manner to form the expansion rod (2), wherein the disassembling and assembling connection can be realized by using the process methods of welding, riveting, stamping, threading, expansion and the like. The boss and the conical head can be provided with (chamfer angle or fillet angle) and also can be provided with smooth curved surface transition, and the shape is various (as shown in figure 2).

The expansion pipe (2) is formed by a sleeve and an expansion sheet (as shown in figure 4), and the expansion sheet can be provided with (chamfer or fillet) and also can be provided with taper and has various shapes.

The expansion pipe is provided with a gasket to form the expansion pipe (3), and the gasket is provided with a chamfer or a fillet (as shown in figure 5).

The expansion pipe (1) is composed of a gasket, a sleeve and an expansion sheet, wherein the sleeve and the gasket are connected in a split combination way (for example, welding, riveting, inserting, rolling, threading, expansion and other technological methods can be used). To give but one example of rolling: the joint of the sleeve and the washer is provided with knurls (or indentations) which are matched with each other, so that the washer can block the sleeve and prevent the sleeve from rotating. The gasket is provided with a polygon (such as a hexagon) formed by more than two platforms, and the expansion sheet can be provided with a chamfer or a fillet and also can be provided with a taper and has various shapes (such as figure 3).

If the sleeve and the gasket are connected integrally or fixedly connected in a detachable and combined mode (for example, the sleeve and the gasket can be connected by welding, riveting, stamping, threading, expansion and other technological methods), the sleeve is only convenient to pull and detach. If the sleeve and the gasket are movably connected in a detachable combination mode (for example, the processes of inserting, rolling, blocking and the like can be all adopted), the sleeve is not easy to pull, and further the disassembly is not easy to realize, but the invention is not substantially influenced, and the functions of the hexagonal gasket and the common gasket (or the gasket) are the same.

The washer, the expansion pipe and the expansion rod in the novel expansion bolt are various in shape and adjustable in size. The size may vary the size of the expansion bolts. The diameter, width, length, height, etc. of the conical head and the boss can be changed according to the processing technology. The diameter, width, length, wall thickness, etc. of the expansion sheet, sleeve and gasket may also be varied as desired for processing.

The specific implementation mode is as follows:

as shown in the figure: only three connection methods are listed, and a plurality of combination connection methods are not listed.

The connection method 1: comprises an expansion rod (1), an expansion pipe (2), a gasket, a spring gasket and a nut.

The connection method 2: comprises an expansion rod (1), an expansion pipe (1), a spring gasket and a nut (as shown in figure 7).

The connection method 3: comprises an expansion rod (2), an expansion pipe (3), a spring gasket and a nut.

The implementation manner is specifically described by taking the connection method (2) (see fig. 7) and combining the installation schematic diagram (fig. 6) as an example. The multipurpose expansion bolt (as shown in figure 7) includes nut, screw, spring washer, sleeve, expansion sheet, boss and conic head. The taper head with the taper is provided with 4 bosses which are uniformly distributed and have the taper, the tail part of the taper head is provided with a fillet or a chamfer and is connected with the screw rod to form an expansion rod (1), and the head part of the screw rod is provided with four corner platforms consisting of four platforms and used for fixing the screw rod by a wrench. (see fig. 1).

Be equipped with 4 the inflation pieces that have the tapering of equipartition on the sleeve pipe, the wall thickness of sheathed tube is bigger than the wall thickness size of inflation piece a little, and the packing ring is hexagonal platform, and one side of packing ring has chamfer or fillet, does benefit to extracting tool fixed jam packing ring, extracts the sleeve pipe. The expansion sheet may be rounded or chamfered or tapered or may have embossments or protrusions (see fig. 3).

The guiding function is as follows:

4 equipartition inflation pieces in this design just in time insert 4 equipartition bosss in the middle of, and belong to clearance fit, the edge of boss blocks the edge of inflation piece, makes the inflation piece do straight reciprocating motion along the edge of boss, has realized the coaxial direction function of expansion link (1) and expansion pipe (1). If the screw rod does not rotate, the sleeve cannot rotate, and the opening of the expansion piece can only do linear reciprocating motion along the boss and cannot rotate, except the guide range of the boss is exceeded.

The novel expansion bolt is characterized in that corresponding holes are punched in a component (14) square tube and a component (15) composite plate in advance, the combination positions of all components of the novel expansion bolt are adjusted, the novel expansion bolt is inserted into a component hole, a sleeve spanner is placed on a four-corner platform of a screw rod, the spanner is pressed by a left hand to be fixed, a spanner locking nut is used by a right hand, an expansion rod (1) moves from inside to outside, an expansion sheet on the expansion tube (1) moves linearly along the edge of a boss, the expansion sheet gradually extends the hole of the expansion clamping component (14) square tube to the outside under the action of a conical head, and the novel expansion bolt and the component are fixedly installed until the installation is finished.

Outward turning locking function:

the multipurpose expansion bolt is characterized in that the screw rod moves from inside to outside and moves from outside to inside relative to the nut according to the principle that the screw rod is inserted into the hole of the mounting component from the inside and the exposed surface is the outside, and the nut is exposed outside the component and is locked by outward rotation.

The strength is large:

because the expansion rod (1) is integrally connected and has no big difference with a common expansion screw rod, the processing technology is relatively not complicated, and because the conical head has the taper and the tail part has the fillet and the chamfer, the larger tail part enhances the tensile strength and the shearing strength. The boss is provided with a taper or a chamfer and has the main functions of blocking and being inserted into the component hole conveniently and smoothly and ensuring the coaxiality of the component hole. Therefore, the process is simple and the strength is high.

Can be disassembled, and has beautiful appearance:

before the dismantlement, after loosening the nut certain distance earlier, strike four corners platform head on expansion link (1) with the hammer, cone and boss on messenger expansion link (1) withdraw from the effect of blockking the inflation piece, block the chamfer on the packing ring with extracting tool, pull up extracting tool hard and drive sleeve pipe and inflation piece by the packing ring, because packing ring and sleeve pipe fixed connection, the sleeve pipe is connected with inflation piece an organic whole, so under the effect of pulling force, the inflation piece that warp makes the inflation piece warp to the internal contraction reset with component hole effect, relapse several times can extract inflation pipe (1), take out expansion link (1), the realization is dismantled, just so solved the screw rod and exposed outside, the potential safety hazard has been eliminated, the appearance of wall body is more pleasing to the eye.

The anti-slip function:

in this design, the four corners platform on the screw rod is blocked to the sleeve pipe spanner, prevents that expansion link (1) from skidding. The boss blocks the expansion sheet to prevent the expansion pipe (1) from slipping. The hexagonal platform is fixed by a double offset ring spanner, and the angle of the expansion pipe (1) can be adjusted by slightly rotating the double offset ring spanner. When the plane of the right four-corner platform is parallel to the plane of the right hexagonal platform, the center positions of the lug boss and the opening of the expansion sheet are exactly the same. Therefore, the defect that the common expansion bolt is easy to slip is overcome.

Multipurpose function:

the multipurpose novel expansion bolt can be used for connecting steel structures, aluminum alloys and stainless steel, can also be used for connecting steel and various plates, can also be used for connecting building walls and the like, has very wide application and is a multipurpose novel expansion bolt.

This completes the embodiment.

It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A novel expansion bolts of multipurpose, its characterized in that: the expansion piece is inserted into two adjacent bosses, so that the bosses block the expansion pieces and have a guiding function.

2. The multipurpose expansion bolt of claim 1, wherein the conical head is conical, the boss and the expansion sheet are uniformly distributed, and the conical head and the boss are integrally connected.

3. The multipurpose expansion bolt of any one of claims 1 and 2, wherein the other end of the screw has a polygonal shape formed by more than two platforms for fixing with a wrench.

4. A multipurpose expansion bolt according to any one of claims 1 and 2, wherein the head of said sleeve is fitted with a washer matching the inner diameter of the sleeve.

5. The multipurpose expansion bolt as claimed in any one of claims 1 and 2, wherein the tapered head, the expansion piece and the boss have chamfer or fillet and taper.

6. The multipurpose expansion bolt as claimed in claim 4, wherein the washer is chamfered or rounded on one side of the sleeve, and the sleeve is integrally connected or detachably combined with the washer.

7. A multipurpose expansion bolt according to claim 6, wherein the washer of said sleeve has a polygonal shape with more than two flats.

8. The multipurpose expansion bolt according to any one of claims 6 and 7, wherein the sleeve is detachably connected with the washer, and knurling (or indentation) is arranged on the joint of the sleeve and the washer to make the washer block the sleeve and prevent the sleeve from rotating.