CN202203237U

CN202203237U - Detachable expansion bolt

Info

Publication number: CN202203237U
Application number: CN 201120299574
Authority: CN
Inventors: 涂建山; 张明学
Original assignee: Chongqing Vocational Institute of Engineering
Current assignee: Chongqing Vocational Institute of Engineering
Priority date: 2011-08-17
Filing date: 2011-08-17
Publication date: 2012-04-25
Anticipated expiration: 2021-08-17

Abstract

The utility model discloses a detachable expansion bolt, which comprises a bolt, an expansion tube sleeved on the bolt and an expansion nut matched with the bolt, wherein one end of the bolt is provided with an external thread, and the other end of the bolt is provided with a tapered expansion head expanded to the end; the section, corresponding to the tapered expansion head, of the expansion tube is provided with at least three longitudinal notches for forming an expansion part; the expansion nut is propped against the outer end face of the expansion tube and matched with the external thread of the bolt; the axial outside tube section of the expansion tube is an installation tube section; and the installation tube section is provided with an external thread and is in threaded fit with an installation nut. The fixed installation expansion tube is not subjected to an axial force and is directly expanded by the bolt, so the expansion tube has a good fixing effect; when the expansion bolt is detached, the expansion nut is directly loosened and the bolt is inwards pushed, so the expansion bolt is easy and convenient to install and detach; the bolt does not damage the installation hole; when the bolt of the same specification is replaced, the bolt is suitable for the original hole, so that the bolt avoids damaging the wall; and the expansion bolt has strong adaptability, low requirement for the hole and good installation and positioning effects.

Description

Detachable EXPANSION ANCHOR BOLTS

Technical field

The utility model relates to a kind of component for building, particularly a kind of detachable EXPANSION ANCHOR BOLTS.

Background technique

EXPANSION ANCHOR BOLTS is one of indispensable component of daily life and building site, can be firm article are fixed on the datum body such as wall.The fixation principle of EXPANSION ANCHOR BOLTS is to utilize to take along the shape gradient and impel to expand and produce the friction bond stress, reaches fixed effect; Bolt one end is an outside thread, and the other end has the vertebra degree head that expands, and outer surface is with the expand tube that some longitudinal cuts are set.During use, insert expand head and expand tube of vertebra degree in the hole of accomplishing fluently on the wall, split nut then, nut pulls outward bolt, and the vertebra degree is drawn in the part that expand tube has longitudinal cut, the part of longitudinal cut is by spreading, so tightly expand and fixing on the wall hole in.

The EXPANSION ANCHOR BOLTS of existing technology in the fixing and turnbuckle process, in the unloading process, in the process that expand tube expands outside, can have outside pulling force through nut when mounted, causes expand tube to expose and withstands on the mounted piece firmly accurately installation; And expand tube can't be retreated during dismounting, generally hits making it loosening through side direction repeatedly; Can cause the expansion of hole, destroy body of wall, therefore; The EXPANSION ANCHOR BOLTS that same hole can only use same size once; Being not suitable for load has the occasion than big bang, otherwise possibly get loose, and causes security incident; Simultaneously, traditional expansion bolt is had relatively high expectations to hole, and adaptability is relatively poor, and big slightly hole can make EXPANSION ANCHOR BOLTS can't play fixed effect; , relatively effort is installed.

Therefore, need transform the structure of EXPANSION ANCHOR BOLTS, installing/dismounting is simple and convenient; To being installed, hole can not damage; The bolt of same specification is applicable to former hole when changing, avoid body of wall is damaged, and the adaptability of EXPANSION ANCHOR BOLTS is stronger; Requirement to hole is not higher, has installing and locating effect preferably.

The model utility content

In view of this, the utility model provides a kind of detachable EXPANSION ANCHOR BOLTS, and installing/dismounting is simple and convenient; To being installed, hole can not damage; The bolt of same specification is applicable to former hole when changing, avoid body of wall is damaged, and the adaptability of EXPANSION ANCHOR BOLTS is stronger; Requirement to hole is not higher, has installing and locating effect preferably.

The detachable EXPANSION ANCHOR BOLTS of the utility model; The expanding nut that comprises bolt, is enclosed within the expand tube on the bolt and cooperates with bolt; Said bolt one end is provided with outside thread; The other end is provided with the bloated head of the tapering that enlarges to the end, and at least three longitudinal cuts of pipeline section setting that the bloated head of expand tube and tapering is corresponding form bulge, and said expanding nut presses closer the expand tube exterior edge face and cooperates with the bolt outside thread; Axially outside pipeline section is for installing pipeline section for said expand tube, and the installation pipeline section is provided with outside thread and screw-thread fit is provided with the installation nut.

Further, be positioned at the axial inboard of mounting pipe section on the said expand tube and be fixed with limited shoulder, said limited shoulder is the disk-like structure of protrusion expand tube cylindrical;

Further, said bulge overcoat rubber sleeve;

Further, said bulge matches near the bloated head of circle setting and tapering in the afterbody inner taper face is set;

Further, said disk-like structure limited shoulder is processed flat axle construction;

Further, said bulge cylindrical is provided with the ring-shaped rubber grooving, and said rubber sleeve is embedded in the ring-shaped rubber grooving.

The beneficial effect of the utility model: the detachable EXPANSION ANCHOR BOLTS of the utility model; Adopt expanding nut when mounted near the structure of expand tube outboard end; Make bolt be pulled through in the journey outside; Expanding nut applies inside pressure to expand tube simultaneously, makes that the comprehensive axial force of expand tube is zero, has better positioning effect; After expand tube is fixing, the object of required installation is installed, is tightened the installation nut at the installation pipeline section of expand tube; This shows that expand tube does not receive axial force fixedly the time, is directly opened by the bolt account; Have fixed effect preferably, directly unclamp expanding nut during dismounting and inwardly push away bolt and get final product, installing/dismounting is simple and convenient; Can not damage hole is installed, the bolt of same specification is applicable to former hole when changing, avoid body of wall is damaged; The adaptability of EXPANSION ANCHOR BOLTS is stronger, and is not higher to the requirement of hole, has installing and locating effect preferably.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the structural representation of the utility model;

Fig. 2 be Fig. 1 along A to view;

Fig. 3 be Fig. 1 along B-B to sectional view.

Embodiment

Fig. 1 is the structural representation of the utility model; Fig. 2 be Fig. 1 along A to view; Fig. 3 be Fig. 1 along B-B to sectional view, as shown in the figure: the detachable EXPANSION ANCHOR BOLTS of present embodiment, the expanding nut 4 that comprises bolt 1, is enclosed within the expand tube 2 on the bolt 1 and cooperates with bolt 1; Said bolt 1 one ends are provided with outside thread; The other end is provided with bloated 11 of the tapering that enlarges to the end, and expand tube 2 and tapering are bloated, and 11 corresponding at least three longitudinal cuts of pipeline section setting 24 form bulges 21, and said expanding nut 4 presses closer expand tube 2 exterior edge faces and cooperates with bolt 1 outside thread; Said expand tube 2 axial outside pipeline sections are for installing pipeline section 22, and installation pipeline section 22 is provided with outside thread and screw-thread fit is provided with installation nut 3; The indication outside is positioned at an axially outside side when being installation.

In the present embodiment; Be positioned at mounting pipe section 22 axial inboards on the said expand tube 2 and be fixed with limited shoulder 23; Said limited shoulder 23 is the disk-like structure of protrusion expand tube 2 cylindricals, is used for carrying out spacingly to object is installed, and avoids expand tube 2 to bear axial force; Thereby keep accurately location, be beneficial to and guarantee planeness when object being installed through a plurality of the utility model.

In the present embodiment, said bulge 21 overcoat rubber sleeves 5; Be beneficial to the space of when expand tube 2 expands, filling circumferencial direction, guarantee installation precision and stable installation property.

In the present embodiment, said bulge 21 matches near bloated 11 of circle setting and tapering in the afterbody inner taper face is set; Make expand tube 2 expansion stable and uniform, stress is good, and avoids local pressure protruding change to occur, is beneficial to the assurance repeat performance.

In the present embodiment, the limited shoulder 23 of said disk-like structure is processed flat axle construction; Put forth effort when being beneficial to dismounting, avoid bolt 1 and expand tube 2 to rotate simultaneously.

In the present embodiment; Said bulge 21 cylindricals are provided with ring-shaped rubber grooving 25; Said rubber sleeve 5 is embedded in the ring-shaped rubber grooving 25, avoids rubber sleeve 5 to move axially even comes off, and the expand tube 2 back rubber sleeves 5 that expand are attached to install in the hole and have axially locating effect preferably.

Explanation is at last; Above embodiment is only unrestricted in order to the technological scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technological scheme of the utility model; And not breaking away from the aim and the scope of the utility model technological scheme, it all should be encompassed in the middle of the claim scope of the utility model.

Claims

1. detachable EXPANSION ANCHOR BOLTS; It is characterized in that: the expanding nut that comprises bolt, is enclosed within the expand tube on the bolt and cooperates with bolt; Said bolt one end is provided with outside thread; The other end is provided with the bloated head of the tapering that enlarges to the end, and at least three longitudinal cuts of pipeline section setting that the bloated head of expand tube and tapering is corresponding form bulge, and said expanding nut presses closer the expand tube exterior edge face and cooperates with the bolt outside thread; Axially outside pipeline section is for installing pipeline section for said expand tube, and the installation pipeline section is provided with outside thread and screw-thread fit is provided with the installation nut.

2. detachable EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that: be positioned at the axial inboard of mounting pipe section on the said expand tube and be fixed with limited shoulder, said limited shoulder is the disk-like structure of protrusion expand tube cylindrical.

3. detachable EXPANSION ANCHOR BOLTS according to claim 2 is characterized in that: said bulge overcoat rubber sleeve.

4. detachable EXPANSION ANCHOR BOLTS according to claim 3 is characterized in that: said bulge matches near the bloated head of circle setting and tapering in the afterbody inner taper face is set.

5. detachable EXPANSION ANCHOR BOLTS according to claim 4 is characterized in that: said disk-like structure limited shoulder is processed flat axle construction.

6. detachable EXPANSION ANCHOR BOLTS according to claim 5 is characterized in that: said bulge cylindrical is provided with the ring-shaped rubber grooving, and said rubber sleeve is embedded in the ring-shaped rubber grooving.