CN204140587U - A kind of EXPANSION ANCHOR BOLTS that can remove completely - Google Patents
A kind of EXPANSION ANCHOR BOLTS that can remove completely Download PDFInfo
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- CN204140587U CN204140587U CN201420578189.8U CN201420578189U CN204140587U CN 204140587 U CN204140587 U CN 204140587U CN 201420578189 U CN201420578189 U CN 201420578189U CN 204140587 U CN204140587 U CN 204140587U
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Abstract
The utility model provides a kind of EXPANSION ANCHOR BOLTS that can remove completely.The problem cannot removed after solving the assembling of existing EXPANSION ANCHOR BOLTS.The utility model comprises screw rod, screw rod small end is fastening screw rasp bar, large end arranges the dovetail post of tapered, the body of rod is arranged expansion screw section, screw rod periphery socket inner sleeve, the tail end of inner sleeve is offered some interior stern notches and the tail end of inner sleeve is divided into several interior swollen bar, the inner circle wall of inner sleeve is arranged assembling thread section, assembling thread section and expansion screw section form screw-thread fit, the head end of inner sleeve is offered some interior pulling eyes, the periphery socket outer sleeve of inner sleeve, the tail end of outer sleeve is offered some outer stern notches and the tail end of outer sleeve is divided into several outer swollen bar, the head end of outer sleeve is offered some outer pulling eyes, also comprise fastening cover, the fastening enclosure is connected on outer sleeve, on the head end of inner sleeve and screw rod, the fastening screw rasp bar of screw rod overlaps connected nut.The utility model can be removed completely, thus promotes the integrity of repairing, and extends and repairs the life-span.
Description
Technical field
The utility model belongs to construction and installation component technology field, is applicable under water or the template of concrete structure reinstatement works or the fixing of support under tide environment, particularly a kind of EXPANSION ANCHOR BOLTS that can remove completely.
Background technique
Conventional EXPANSION ANCHOR BOLTS utilizes end wedge configuration, and by the relative movement of screw rod and sleeve pipe, wedge shape struts sleeve bottom, realizes sleeve pipe and contacts with the effective of structure hole wall, thus provides the anti-pulling ability of screw rod.
But because sleeve pipe is squeezed end gross distortion, cannot normally take out, and the minimum circumscribed circle diameter of screw rod end wedge shape is greater than the inner diameter not being out of shape anterior cannula, just because of sleeve pipe cannot take out, directly causes screw rod also cannot take out.In the past when repairing under water or have the concrete structure of tidal effect surperficial, need at its surperficial fixed die plate, employing EXPANSION ANCHOR BOLTS is fixedly the method for the most frequently used also most convenient, and the consumption of EXPANSION ANCHOR BOLTS is many toward contact, but the EXPANSION ANCHOR BOLTS of routine just can not be removed after a procedure.Gap between screw rod and sleeve pipe cannot effectively shutoff, although concrete structure is the defect area fixed, has manufactured again the passage that some extraneous corrosive mediums invade structure inside in repair process.
Installation form the most frequently used, the most easy method when since EXPANSION ANCHOR BOLTS is local defect of concrete reparation, that is just necessary to develop a kind of EXPANSION ANCHOR BOLTS that can remove smoothly after a procedure very much, cannot take out to make up existing EXPANSION ANCHOR BOLTS the problem brought.
Model utility content
The purpose of this utility model there are the problems referred to above for existing technology, propose a kind of by setting up expansion sleeve, and locking mechanism is set respectively, to realize the overdose space increasing dismounting flexibly, reach the EXPANSION ANCHOR BOLTS that can remove completely of the reverse dismounting operation after assembling of expanding.
The purpose of this utility model realizes by following technical proposal: a kind of EXPANSION ANCHOR BOLTS that can remove completely, comprise screw rod, described screw rod is the cylindric body of rod of variable cross section, the small end of the body of rod is fastening screw rasp bar, the large end of the body of rod arranges the dovetail post of tapered, the body of rod is arranged expansion screw section, described screw rod periphery socket inner sleeve, the tail end of described inner sleeve offers some interior stern notches vertically, the tail end of inner sleeve is divided into several interior swollen bar by interior stern notch, the inner circle wall of described inner sleeve is arranged assembling thread section, assembling thread section and expansion screw section form screw-thread fit, the head end of described inner sleeve is offered some interior pulling eyes, the periphery socket outer sleeve of described inner sleeve, the tail end of described outer sleeve offers some outer stern notches vertically, the tail end of outer sleeve is divided into several outer swollen bar by outer stern notch, the head end of described outer sleeve is offered some outer pulling eyes, also comprise fastening cover, the described fastening enclosure is connected on outer sleeve, on the head end of inner sleeve and screw rod, the fastening screw rasp bar of described screw rod overlaps connected nut.
Originally in the EXPANSION ANCHOR BOLTS can removed completely, screw rod is specially variable cross section rod-like structure, and its one end circular diameter is large, and as tail end, the other end circular diameter is little, and as head end, intermediate, inclined transition forms certain taper.The dovetail post of taper platform shape, its path end face is connected the tail end of screw rod, and outside its bigger diameter end faces, overall and screw coaxial line is arranged.The position of expansion screw section is near dovetail post, and expansion screw section has 2 ~ 4 circle screw threads, and the external diameter of expansion screw section is greater than the external diameter of fastening screw rasp bar.Some interior stern notch on inner sleeve is evenly distributed, and make the width of interior swollen bar consistent, the some outer stern notch on outer sleeve is evenly distributed, and make the width of outer swollen bar consistent, in addition, the length of swollen bar is less than the length of outer swollen bar.The head end of inner sleeve offers two interior pulling eyes relatively, being convenient to clamp inner sleeve, preventing the inner sleeve when rotational lock from following rotation, conveniently being pulled out by inner sleeve when removing by interior pulling eye.Outer sleeve be shorter in length than inner sleeve, the head end of outer sleeve offers two outer pulling eyes relatively, by outer pulling eye be convenient to clamp outer sleeve, be convenient to rotate and remove time outer sleeve is pulled out.
In the above-mentioned EXPANSION ANCHOR BOLTS that can remove completely, the screw thread of described expansion screw section screws direction and the screw thread of fastening screw rasp bar, and to screw direction contrary.In expansion screw section and fastening screw rasp bar, one is left-handed thread, and another one is right-handed thread, to ensure when tightening nut, prevents screw rod from getting loose with being threaded of inner sleeve.
In the above-mentioned EXPANSION ANCHOR BOLTS that can remove completely, the internal diameter specification of described inner sleeve is divided into three sections, the internal diameter of interior swollen bar is greater than the external diameter of expansion screw section, and the assembling internal diameter of thread section and the external diameter of expansion screw section match, and the internal diameter of residue cylindrical shell is greater than the external diameter of fastening screw rasp bar.
In the above-mentioned EXPANSION ANCHOR BOLTS that can remove completely, the Outside diameter of described dovetail post is less than the internal diameter of outer sleeve, and is greater than the internal diameter of inner sleeve; The end diameter of described dovetail post is less than the internal diameter of swollen bar on inner sleeve.
In the above-mentioned EXPANSION ANCHOR BOLTS that can remove completely, recessed inner hexagonal hole on the exterior edge face of the fastening screw rasp bar of described screw rod, being centrally located on the axis of screw rod of described inner hexagonal hole.Inner hexagonal hole is specifically opened on the small end end face of the variable cross section column body of rod, instrument can be utilized to insert inner hexagonal hole and rotary screw, realize the rotate in a circumferential direction movement of screw rod relative to inner sleeve.
In the above-mentioned EXPANSION ANCHOR BOLTS that can remove completely, described fastening cover is ladder tubulose, three sections of bodys that ladder tubulose is divided into aperture to successively decrease successively, the large aperture body being positioned at rear is socketed on outer sleeve, the mesoporous body being positioned at stage casing is socketed on inner sleeve, and the small aperture body being positioned at first section is socketed on fastening screw rasp bar.Large aperture body is slightly larger than outer sleeve external diameter, and its length should ensure fastening rear interior pulling eye, outer pulling eye all exposes; Mesoporous body is slightly larger than inner sleeve external diameter, and its length is the section of exposing of fastening rear lucky covering inner sleeve; Small aperture body is slightly larger than fastening screw rasp bar external diameter, and its length must not exceed the half of fastening screw rasp bar.The step width of large aperture body, mesoporous body is greater than the wall thickness of outer sleeve, inner sleeve respectively.
The installation method of the EXPANSION ANCHOR BOLTS that can remove completely, comprises following installation steps:
Step one: screw rod is passed inner sleeve by the fastening screw rasp bar of small end, then outer sleeve is pierced into again as a whole, now the dovetail post of screw rod, the interior swollen bar of inner sleeve, the outer swollen bar of outer sleeve are unanimously in end-position, then screw rod, inner sleeve, outer sleeve are put into the pre-drilled through hole of structure in the lump, and the tail end with dovetail post is inlet end;
Step 2: utilize tool holding to live the interior pulling eye of inner sleeve, rotate inner hexagonal hole with instrument simultaneously and make bolt rotary, expansion screw section on screw rod screws movement along the assembling thread section of inner sleeve, screw rod is outwards screwed out by inner sleeve gradually, and then the pillared interior swollen bar opening inner sleeve of dovetail, the approximate aperture that this rotary course continues to interior swollen bar is greater than outer sleeve external diameter and close to the through-hole diameter of structure;
Step 3: the fastening enclosure is put on the external part of screw rod, inner sleeve and outer sleeve, be close to structure plane, then on fastening screw rasp bar, connected nut is overlapped, screw rod is impelled to continue by rotating nut outwards mobile, thus force the interior swollen bar of inner sleeve to strut the outer swollen bar of outer sleeve gradually, ensure outer swollen bar and structure hole wall close contact, realize the installation of EXPANSION ANCHOR BOLTS.
The method for dismounting of the EXPANSION ANCHOR BOLTS that can remove completely, comprises following dismounting step:
Step one: screw off nut, takes off fastening cover, makes the interior pulling eye on inner sleeve, and the outer pulling eye on outer sleeve is exposed outside structure;
Step 2: utilize instrument to rotate inner hexagonal hole and make screw rod inner mobile along inner sleeve to through hole, after the expansion screw section of screw rod and the assembling thread section of inner sleeve depart from completely, rap screw rod in through hole, make screw rod depart from inner sleeve completely;
Step 3: the interior pulling eye clamping inner sleeve, pulls out inner sleeve, then takes out screw rod, finally clamp the outer pulling eye of outer sleeve, and pull-out outer sleeve, realizes the dismounting completely of EXPANSION ANCHOR BOLTS.
Compared with prior art, originally the EXPANSION ANCHOR BOLTS can removed completely has set up inner sleeve in conventional expanded bolt, make it be socketed between screw rod and outer sleeve, first can remove the swelling between screw rod and inner sleeve in the dismantling operation of EXPANSION ANCHOR BOLTS, thus obtain dismounting overdose space, smoothly by equal to screw rod, inner sleeve and outer sleeve removal, reach the effect of removing completely, so that the gap of wall surface is repaired in shutoff, prevent the intrusion of corrosive material, promote the integrity of repairing, extend and repair the life-span.
Accompanying drawing explanation
Fig. 1 is the first structure graph of the EXPANSION ANCHOR BOLTS originally can removed completely.
Fig. 2 is the second structure graph of the EXPANSION ANCHOR BOLTS originally can removed completely.
Fig. 3 is the structural drawing of screw rod in the EXPANSION ANCHOR BOLTS originally can removed completely.
Fig. 4 is the three-dimensional structure diagram of the EXPANSION ANCHOR BOLTS using state originally can removed completely.
Fig. 5 is the sectional structure chart of the EXPANSION ANCHOR BOLTS using state originally can removed completely.
In figure, 1, screw rod, 1-1, inner hexagonal hole, 1-2, dovetail post, 1-3, expansion screw section, 1-4, fastening screw rasp bar, 2, inner sleeve, 2-1, interior stern notch, 2-2, interior swollen bar, 3, outer sleeve, 3-1, outer stern notch, 3-2, outer swollen bar, 3-3, outer pulling eye, 4, fastening cover, 5, structure, 5-1, through hole, 6, nut.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figures 1 to 5, the EXPANSION ANCHOR BOLTS originally can removed completely mainly comprises screw rod 1, inner sleeve 2, outer sleeve 3, fastening cover 4 and nut 6.
Screw rod 1 is the cylindric body of rod, is specially variable cross section rod-like structure, and its one end circular diameter is large, as tail end; The other end circular diameter is little, as head end; Intermediate, inclined transition forms certain taper.The small end of screw rod 1 body of rod is fastening screw rasp bar 1-4, and the large end of the body of rod arranges the dovetail post 1-2 of tapered, and its path end face is connected the tail end of screw rod 1, and outside its bigger diameter end faces, overall and screw rod 1 is coaxially set.The body of rod is arranged expansion screw section 1-3, the position of expansion screw section 1-3 has 2 ~ 4 circle screw threads near dovetail post 1-2, expansion screw section 1-3, and the external diameter of expansion screw section 1-3 is greater than the external diameter of fastening screw rasp bar 1-4.
Screw rod 1 periphery socket inner sleeve 2, the tail end of inner sleeve 2 offers some interior stern notch 2-1 vertically, and in these, stern notch 2-1 is evenly distributed, and the tail end of inner sleeve 2 is divided into several interior swollen bar 2-2, and makes the width of interior swollen bar 2-2 consistent.The inner circle wall of inner sleeve 2 is arranged assembling thread section, assembling thread section can form screw-thread fit with expansion screw section 1-3.The head end of inner sleeve 2 offers two interior pulling eyes relatively, being convenient to clamp inner sleeve 2, preventing the inner sleeve 2 when rotational lock from following rotation, conveniently being pulled out by inner sleeve 2 when removing by interior pulling eye.
Inner sleeve 2 periphery socket outer sleeve 3, and outer sleeve 3 be shorter in length than inner sleeve 2.The tail end of outer sleeve 3 offers some outer stern notch 3-1 vertically, these outer stern notch 3-1 are evenly distributed, and the tail end of outer sleeve 3 is divided into several outer swollen bar 3-2, and make the width of outer swollen bar 3-2 consistent, in addition, the length of swollen bar 2-2 is less than the length of outer swollen bar 3-2.The head end of outer sleeve 3 offers two outer pulling eye 3-3 relatively, is convenient to clamp outer sleeve 3 by outer pulling eye 3-3, is convenient to be pulled out by outer sleeve 3 when rotating and remove.
Fastening cover 4 is socketed on the head end of outer sleeve 3, inner sleeve 2 and screw rod 1, and the fastening screw rasp bar 1-4 of screw rod 1 overlaps connected nut 6.
The screw thread of expansion screw section 1-3 screws direction and the screw thread of fastening screw rasp bar 1-4, and to screw direction contrary.Be specially, in expansion screw section 1-3 and fastening screw rasp bar 1-4, one is left-handed thread, and another one is right-handed thread, to ensure when tightening nut 6, prevents screw rod 1 from getting loose with being threaded of inner sleeve 2.
The internal diameter specification of inner sleeve 2 is divided into three sections, and the internal diameter of interior swollen bar 2-2 is greater than the external diameter of expansion screw section 1-3, and the assembling internal diameter of thread section and the external diameter of expansion screw section 1-3 match, and the internal diameter of residue cylindrical shell is greater than the external diameter of fastening screw rasp bar 1-4.The Outside diameter of dovetail post 1-2 is less than the internal diameter of outer sleeve 3, and is greater than the internal diameter of inner sleeve 2; The end diameter of dovetail post 1-2 is less than the internal diameter of swollen bar 2-2 on inner sleeve 2.
Recessed inner hexagonal hole 1-1 on the exterior edge face of the fastening screw rasp bar 1-4 of screw rod 1, on the axis being centrally located at screw rod 1 of this inner hexagonal hole 1-1.Inner hexagonal hole 1-1 is specifically opened on the small end end face of the variable cross section column body of rod, instrument can be utilized to insert inner hexagonal hole 1-1 and rotary screw 1, realize the rotate in a circumferential direction movement of screw rod 1 relative to inner sleeve 2.
Fastening cover 4 is ladder tubulose, three sections of bodys that ladder tubulose is divided into aperture to successively decrease successively, the large aperture body being positioned at rear is socketed on outer sleeve 3, and the mesoporous body being positioned at stage casing is socketed on inner sleeve 2, and the small aperture body being positioned at first section is socketed on fastening screw rasp bar 1-4.Large aperture body is slightly larger than outer sleeve 3 external diameter, and its length should ensure fastening rear interior pulling eye, outer pulling eye 3-3 all exposes; Mesoporous body is slightly larger than inner sleeve 2 external diameter, and its length is the section of exposing of fastening rear lucky covering inner sleeve 2; Small aperture body is slightly larger than fastening screw rasp bar 1-4 external diameter, and its length must not exceed the half of fastening screw rasp bar 1-4.The step width of large aperture body, mesoporous body is greater than the wall thickness of outer sleeve 3, inner sleeve 2 respectively.
The installation method of the EXPANSION ANCHOR BOLTS that can remove completely, comprises following installation steps:
Step one: screw rod 1 is passed inner sleeve 2 by the fastening screw rasp bar 1-4 of small end, then outer sleeve 3 is pierced into again as a whole, now dovetail post 1-2, the interior swollen bar 2-2 of inner sleeve 2 of screw rod 1, the outer swollen bar 3-2 of outer sleeve 3 are unanimously in end-position, then screw rod 1, inner sleeve 2, outer sleeve 3 are put into the pre-drilled through hole 5-1 of structure 5 in the lump, and the tail end with dovetail post 1-2 is inlet end;
Step 2: utilize tool holding to live the interior pulling eye of inner sleeve 2, rotate inner hexagonal hole 1-1 with instrument makes screw rod 1 rotate simultaneously, expansion screw section 1-3 on screw rod 1 screws movement along the assembling thread section of inner sleeve 2, screw rod 1 is outwards screwed out by inner sleeve 2 gradually, and then dovetail post 1-2 struts the interior swollen bar 2-2 of inner sleeve 2, the approximate aperture that this rotary course continues to interior swollen bar 2-2 is greater than outer sleeve 3 external diameter and close to the through hole 5-1 diameter of structure 5;
Step 3: fastening cover 4 is nested with on the external part of screw rod 1, inner sleeve 2 and outer sleeve 3, be close to structure 5 plane, then on fastening screw rasp bar 1-4, connected nut 6 is overlapped, screw rod 1 is impelled to continue outside movement by rotating nut 6, thus force the interior swollen bar 2-2 of inner sleeve 2 to strut the outer swollen bar 3-2 of outer sleeve 3 gradually, ensure outer swollen bar 3-2 and structure 5 hole wall close contact, realize the installation of EXPANSION ANCHOR BOLTS.
The method for dismounting of the EXPANSION ANCHOR BOLTS that can remove completely, comprises following dismounting step:
Step one: screw off nut 6, takes off fastening cover 4, makes the interior pulling eye on inner sleeve 2, and the outer pulling eye 3-3 on outer sleeve 3 is exposed outside structure 5;
Step 2: utilize instrument to rotate inner hexagonal hole 1-1 and make screw rod 1 inner mobile along inner sleeve 2 to through hole 5-1, after the expansion screw section 1-3 of screw rod 1 and the assembling thread section of inner sleeve 2 depart from completely, in through hole 5-1, rap screw rod 1, make screw rod 1 depart from inner sleeve 2 completely;
Step 3: the interior pulling eye clamping inner sleeve 2, pulls out inner sleeve 2, then takes out screw rod 1, finally clamps the outer pulling eye 3-3 of outer sleeve 3, and pull-out outer sleeve 3, realizes the dismounting completely of EXPANSION ANCHOR BOLTS.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ screw rod 1 herein, inner hexagonal hole 1-1, dovetail post 1-2, expansion screw section 1-3, fastening screw rasp bar 1-4, inner sleeve 2, interior stern notch 2-1, interior swollen bar 2-2, outer sleeve 3, outer stern notch 3-1, outer swollen bar 3-2, outer pulling eye 3-3, fastening cover 4, structure 5, through hole 5-1, term such as nut 6 grade, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (6)
1. the EXPANSION ANCHOR BOLTS that can remove completely, comprise screw rod, described screw rod is the cylindric body of rod of variable cross section, the small end of the body of rod is fastening screw rasp bar, the large end of the body of rod arranges the dovetail post of tapered, the body of rod is arranged expansion screw section, it is characterized in that, described screw rod periphery socket inner sleeve, the tail end of described inner sleeve offers some interior stern notches vertically, the tail end of inner sleeve is divided into several interior swollen bar by interior stern notch, the inner circle wall of described inner sleeve is arranged assembling thread section, assembling thread section and expansion screw section form screw-thread fit, the head end of described inner sleeve is offered some interior pulling eyes, the periphery socket outer sleeve of described inner sleeve, the tail end of described outer sleeve offers some outer stern notches vertically, the tail end of outer sleeve is divided into several outer swollen bar by outer stern notch, the head end of described outer sleeve is offered some outer pulling eyes, also comprise fastening cover, the described fastening enclosure is connected on outer sleeve, on the head end of inner sleeve and screw rod, the fastening screw rasp bar of described screw rod overlaps connected nut.
2. the EXPANSION ANCHOR BOLTS that can remove completely according to claim 1, is characterized in that, the screw thread of described expansion screw section screws direction and the screw thread of fastening screw rasp bar, and to screw direction contrary.
3. the EXPANSION ANCHOR BOLTS that can remove completely according to claim 1, it is characterized in that, the internal diameter specification of described inner sleeve is divided into three sections, the internal diameter of interior swollen bar is greater than the external diameter of expansion screw section, the assembling internal diameter of thread section and the external diameter of expansion screw section match, and the internal diameter of residue cylindrical shell is greater than the external diameter of fastening screw rasp bar.
4. the EXPANSION ANCHOR BOLTS that can remove completely according to claim 3, is characterized in that, the Outside diameter of described dovetail post is less than the internal diameter of outer sleeve, and is greater than the internal diameter of inner sleeve; The end diameter of described dovetail post is less than the internal diameter of swollen bar on inner sleeve.
5. the EXPANSION ANCHOR BOLTS that can remove completely according to claim 1, is characterized in that, recessed inner hexagonal hole on the exterior edge face of the fastening screw rasp bar of described screw rod, being centrally located on the axis of screw rod of described inner hexagonal hole.
6. the EXPANSION ANCHOR BOLTS that can remove completely according to claim 1, it is characterized in that, described fastening cover is ladder tubulose, three sections of bodys that ladder tubulose is divided into aperture to successively decrease successively, the large aperture body being positioned at rear is socketed on outer sleeve, the mesoporous body being positioned at stage casing is socketed on inner sleeve, and the small aperture body being positioned at first section is socketed on fastening screw rasp bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420578189.8U CN204140587U (en) | 2014-10-09 | 2014-10-09 | A kind of EXPANSION ANCHOR BOLTS that can remove completely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420578189.8U CN204140587U (en) | 2014-10-09 | 2014-10-09 | A kind of EXPANSION ANCHOR BOLTS that can remove completely |
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| Publication Number | Publication Date |
|---|---|
| CN204140587U true CN204140587U (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420578189.8U Expired - Fee Related CN204140587U (en) | 2014-10-09 | 2014-10-09 | A kind of EXPANSION ANCHOR BOLTS that can remove completely |
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| Country | Link |
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| CN (1) | CN204140587U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314944A (en) * | 2014-10-09 | 2015-01-28 | 青岛林川工程技术咨询有限公司 | Completely dismountable expansive bolt and dismounting method thereof |
| CN106545554A (en) * | 2017-01-20 | 2017-03-29 | 武汉宁泉科技有限公司 | A kind of expansion connects firmly modular system |
| CN112628261A (en) * | 2020-12-27 | 2021-04-09 | 冯建娟 | Expansion screw |
-
2014
- 2014-10-09 CN CN201420578189.8U patent/CN204140587U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314944A (en) * | 2014-10-09 | 2015-01-28 | 青岛林川工程技术咨询有限公司 | Completely dismountable expansive bolt and dismounting method thereof |
| CN104314944B (en) * | 2014-10-09 | 2016-05-18 | 青岛林川工程技术咨询有限公司 | A kind of expansion bolt that can remove completely and assembly and disassembly methods thereof |
| CN106545554A (en) * | 2017-01-20 | 2017-03-29 | 武汉宁泉科技有限公司 | A kind of expansion connects firmly modular system |
| CN112628261A (en) * | 2020-12-27 | 2021-04-09 | 冯建娟 | Expansion screw |
| CN112628261B (en) * | 2020-12-27 | 2022-05-17 | 嘉兴海德五金有限公司 | Expansion screw |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20151009 |
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| EXPY | Termination of patent right or utility model |