CN217234037U

CN217234037U - Detachable expansion bolt

Info

Publication number: CN217234037U
Application number: CN202123178041.4U
Authority: CN
Inventors: 王业涛; 张文英; 杨瑞香; 李�杰; 杨凯; 赵和鹏; 侯琴; 潘建国; 古榕清
Original assignee: China Construction Fifth Engineering Bureau Co Ltd
Current assignee: China Construction Fifth Engineering Bureau Co Ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-08-19
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses a detachable expansion bolt, which comprises a nut, an expansion pipe, a gasket and a screw rod, wherein the expansion pipe is provided with at least one lower slit; the screw is provided with an expansion head and at least one side bulge corresponding to the lower slit, and the expansion head and the lower slit are distributed at two ends of the screw; the screw rod is located the expansion pipe, and the protruding slidable mounting of lateral part is slotted in the lower part, and the end spiro union of nut and screw rod, packing ring set up between nut and expansion pipe, and the expansion head is located the lower part and is slotted one side. The expansion pipe is knocked into the wall body, and the nut rotates to make the screw rod remove along the expansion pipe, makes the protruding edge lower part of lateral part crack and slide, and then makes the expansion head crack the expansion pipe along the lower part and open, and during the dismantlement, the nut rotates to make the protruding lower part that breaks away from of lateral part crack, draws the screw rod to retrieve, has solved expansion bolt non-detachable defect for expansion bolt can reuse, uses and dismantles the in-process, need not special equipment, can implement, and easy operation is convenient.

Description

Detachable expansion bolt

Technical Field

The utility model relates to a bolt field especially relates to a can dismantle expansion bolts.

Background

At present, an expansion bolt generally comprises a countersunk head bolt, an expansion pipe, a flat washer, a spring washer and a hexagon nut. When the bolt is used, firstly, a hole with a corresponding size is drilled on the fixing body by using an impact electric drill, then the bolt and the expanding tube are arranged in the hole, and the bolt, the expanding tube, the mounting piece and the fixing body can be expanded into a whole by screwing the nut. The bolt can expand after being screwed, the tail part of the bolt is provided with a big head, a round pipe with a diameter slightly larger than that of the bolt is sleeved on the outer surface of the bolt, the tail part is provided with a plurality of openings, after the bolt is screwed, the tail part of the big head is taken into the pipe with the openings, the pipe is punched to be big, the purpose of expansion is achieved, and then the bolt is fixed on the ground or the wall, so that the purpose of rooting is achieved. The fixation of the expansion screw is achieved by using the taper of the wedged shape to promote the expansion to generate the friction grip force.

However, the conventional expansion bolts have the following drawbacks:

the traditional expansion bolts are all disposable products. After the bolt is used, the bolt cannot be detached, if the bolt is to be detached, the exposed screw can be cut off only by a gas cutting or hand grinding cutting machine, and the part fixed in the structure cannot be taken out, so that the method is not only low in efficiency, but also cannot be reused.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a detachable expansion bolt which can solve the problem of incapable recovery.

The utility model discloses an one of the purpose adopts following technical scheme to realize:

a detachable expansion bolt comprises a nut, an expansion pipe, a gasket and a screw, wherein the expansion pipe is provided with at least one lower part slot; the screw is provided with an expansion head and at least one side bulge corresponding to the lower slit, and the expansion head and the lower slit are distributed at two ends of the screw; the screw rod is located the expansion pipe, and the protruding sliding mounting of lateral part is slotted in the lower part, and the nut is connected with the tip spiro union of screw rod, and the packing ring sets up between nut and expansion pipe, and the expansion head is located the lower part and is slotted one side, and the sectional area of expansion head is greater than the sectional area of screw rod.

Further, the expansion pipe is provided with a bottom slot for clamping and fixing the side protrusions.

Further, the number of the side bulges is the same as that of the bottom slots and the lower slots.

Further, the number of the lateral protrusions is two, the screw is provided with a central vertical surface along the axis, and the two lateral protrusions are symmetrically distributed along the central vertical surface.

Further, the number of the side protrusions is 4.

Further, the screw is provided with an upper rotary groove for observing the position of the side projection.

Further, the upper rotary groove and the side protrusion are positioned on the same line.

Further, the upper half section of the screw is in a thread shape.

Furthermore, the lateral protrusions are long rod-shaped, and the lateral protrusions penetrate through the lower slits.

Further, the maximum cross-sectional area of the expansion head is larger than the inner diameter of the expansion pipe.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the expansion head and the lower part slot are distributed at two ends of the screw rod; the screw rod is located the expansion pipe, and the protruding sliding mounting of lateral part is slotted in the lower part, and the nut is connected with the tip spiro union of screw rod, and the packing ring sets up between nut and expansion pipe, and the expansion head is located the lower part and is slotted one side, and the sectional area of expansion head is greater than the sectional area of screw rod. The expansion pipe is knocked into the wall body, and the nut rotates to make the screw rod remove along the expansion pipe, makes the protruding edge lower part of lateral part crack and slide, and then makes the expansion head crack the expansion pipe along the lower part and open, and during the dismantlement, the nut rotates to make the protruding lower part that breaks away from of lateral part crack, draws the screw rod to retrieve, has solved expansion bolt non-detachable defect for expansion bolt can reuse, uses and dismantles the in-process, need not special equipment, can implement, and easy operation is convenient.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of a preferred embodiment of the removable expansion bolt of the present invention;

fig. 2 is an internal structural view of the detachable expansion bolt shown in fig. 1.

In the figure: 1. a nut; 2. an expansion tube; 21. slotting the lower part; 22. slotting the bottom; 3. a gasket; 4. a screw; 40. an expansion head; 41. a side projection; 42. an upper rotary groove.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-2, a detachable expansion bolt includes a nut 1, an expansion tube 2, a washer 3, and a screw rod 4, wherein the expansion tube 2 is provided with at least one lower slit 21; the screw 4 is provided with an expansion head 40 and at least one side bulge 41 corresponding to the lower slit 21, and the expansion head 40 and the lower slit 21 are distributed at two ends of the screw 4; the screw rod 4 is positioned in the expansion pipe 2, the side part bulge 41 is slidably installed on the lower part slot 21, the nut 1 is in threaded connection with the end part of the screw rod 4, the gasket 3 is arranged between the nut 1 and the expansion pipe 2, the expansion head 40 is positioned on one side of the lower part slot 21, and the sectional area of the expansion head 40 is larger than that of the screw rod 4. Wall body is beaten into to expansion pipe 2, rotation nut 1 makes screw rod 4 remove along expansion pipe 2, make the protruding 41 edge lower part of lateral part open a seam 21 and slide, and then make expansion head 40 open expansion pipe 2 along lower part open a seam 21, during the dismantlement, rotation nut 1 makes the protruding 41 separation lower part of lateral part open a seam 21, draw and drag screw rod 4 and retrieve, the undetachable defect of expansion bolt has been solved, make expansion bolt ability reuse, use and dismantle the in-process, need not special equipment, can implement, easy operation is convenient.

Preferably, the expansion tube 2 is provided with a bottom slot 22 for snap-fastening the lateral protrusions 41. The purpose of the bottom slot 22 is to: when needs are dismantled, provide a joint position for lateral part arch 41, solved and drawn to draw and draw the problem of rocking, improve and dismantle efficiency.

Preferably, the number of the side protrusions 41 is the same as that of the bottom slots 22 and the lower slits 21. Specifically, in the first embodiment, the number of the side projections 41 is two, the screw 4 is provided with a central vertical plane along the axis, and the two side projections 41 are symmetrically distributed along the central vertical plane. Specifically, in the second embodiment, it is preferable that the number of the side projections 41 is 4.

Preferably, the screw 4 is provided with an upper rotation groove 42 for observing the position of the side protrusion 41. The upper rotary groove 42 is positioned on the same line as the side protrusion 41. The upper rotary groove 42 is provided for the purpose of: when the device is knocked into the wall, the position of the lateral protrusion 41 relative to the upper rotary groove 42 is not observed, and the upper rotary groove 42 is used to adjust the position of the lateral protrusion 41.

Preferably, the upper half of the screw 4 is threaded. The side protrusions 41 have a long bar shape, and the side protrusions 41 pass through the lower slits 21. The maximum cross-sectional area of the expansion head 40 is greater than the inner diameter of the expansion tube 2. Whole device compact structure, novel structure, design benefit, the suitability is strong, the facilitate promotion.

Specifically, after drilling, the hole diameter is slightly smaller than the outer sleeve of the expansion bolt, so that the expansion bolt is generally required to be integrally knocked into the drill hole by a hammer, so that the outer sleeve and the inner wall of the drill hole form interference fit. Thus, when the nut is screwed, the outer sleeve is not rotated basically, so that the bolt and the outer sleeve move linearly with each other.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a can dismantle expansion bolts, includes nut, expansion pipe, packing ring, screw rod, its characterized in that:

the expansion pipe is provided with at least one lower slot;

the screw is provided with an expansion head and at least one side bulge corresponding to the lower slit, and the expansion head and the lower slit are distributed at two ends of the screw;

the screw rod is located the expansion pipe, and the protruding sliding mounting of lateral part is slotted in the lower part, and the nut is connected with the tip spiro union of screw rod, and the packing ring sets up between nut and expansion pipe, and the expansion head is located the lower part and is slotted one side, and the sectional area of expansion head is greater than the sectional area of screw rod.

2. The removable expansion bolt of claim 1, wherein: the expansion pipe is provided with a bottom groove for clamping and fixing the side part protrusion.

3. The removable expansion bolt of claim 2, wherein: the number of the side protrusions is the same as that of the bottom slots and the lower slots.

4. The removable expansion bolt of claim 3, wherein: the number of the lateral protrusions is two, the screw is provided with a central vertical surface along the axis, and the two lateral protrusions are symmetrically distributed along the central vertical surface.

5. The removable expansion bolt of claim 3, wherein: the number of side projections is 4.

6. The removable expansion bolt of claim 1, wherein: the screw is provided with an upper rotary groove for observing the position of the lateral protrusion.

7. The removable expansion bolt of claim 6, wherein: the upper rotary groove and the lateral bulge are positioned on the same straight line.

8. The removable expansion bolt of claim 1, wherein: the upper half section of the screw rod is in a thread shape.

9. The removable expansion bolt of claim 1, wherein: the lateral protrusions are long rod-shaped, and the lateral protrusions penetrate through the lower slits.

10. The removable expansion bolt of claim 1, wherein: the maximum cross-sectional area of the expansion head is larger than the inner diameter of the expansion pipe.