CN207122478U - A kind of repeatable expansion bolt utilized - Google Patents
A kind of repeatable expansion bolt utilized Download PDFInfo
- Publication number
- CN207122478U CN207122478U CN201721181439.4U CN201721181439U CN207122478U CN 207122478 U CN207122478 U CN 207122478U CN 201721181439 U CN201721181439 U CN 201721181439U CN 207122478 U CN207122478 U CN 207122478U
- Authority
- CN
- China
- Prior art keywords
- pad
- expansion tube
- screw rod
- expansion
- expansion bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model is specially a kind of repeatable expansion bolt utilized, solves the problems, such as that existing expansion bolt presence can not reuse after being not easy to remove and removing.Including screw rod and expansion tube, the left part of screw rod is provided with nut, the right-hand member of screw rod is provided with taper boss, the left end of expansion tube is provided with pad I, expansion tube lateral wall is provided with pad II, pad I external diameter is more than pad II external diameter, and the right part side wall of expansion tube is provided with bar-shaped trough, spring washer is provided between nut and pad I.The utility model is simple in construction, reasonable in design, it is impetus using the step clearance formed between pad, expansion tube can be taken out out of mounting hole by crowbar or special instrument, after subsequently being repaired to the expansion tube of extraction, the purpose of recycling can be reached.
Description
Technical field
Technical field of fastening is the utility model is related to, specially a kind of repeatable expansion bolt utilized.
Background technology
Expansion bolt is a kind of anchor for the installation that can be drilled on existing building.During installation, expansion bolt is put
Enter in the drilling of existing building, screw rod is pulled out by tightening nut, the iron sheet pipe with cut ends is passively outwards opened
Open so that screw rod conehead applies the normal pressure perpendicular to hole wall to conduit peschel, so as to produce certain withdrawal resistance, reaches anchoring mesh
's.
It is deep to be welcome by engineering circles because expansion bolt is cheap, install convenient.But undeniable to be, existing expansion
Bolt, which exists, removes the problem of difficult so that exposed shank of bolt, which is not easy to be blocked, covering and easily to get rusty, influence it is attractive in appearance, even if by force
Row is pulled out and can not also reused.
The content of the invention
The utility model is asked to solve existing expansion bolt in the presence of what can not be reused after being not easy to remove and removing
A kind of topic, there is provided repeatable expansion bolt utilized.
The utility model is achieved by the following technical solution：A kind of repeatable expansion bolt utilized, including screw rod
With the expansion tube being enclosed on the outside of it, the left part of screw rod is provided with the nut being threadedly coupled with it, and the right-hand member of screw rod is provided with the right side
Side diameter is more than left side diameter and more than the taper boss of expansion bore, and the left end of expansion tube is provided with and its one and is located at
Pad I on the outside of it, expansion tube lateral wall is provided with the right side of pad I and external diameter is more than the pad II of mounting hole internal diameter, pad
Piece I external diameter is more than pad II external diameter, and the right part side wall of expansion tube is provided with some axially arranged bar-shaped troughs, nut and pad
The spring washer being enclosed on screw rod is provided between piece I.
During installation, suitable drill bit is selected according to the length of expansion tube and external diameter, in building stationary plane injection mounting hole,
Expansion bolt is inserted into mounting hole, pulls screw rod to be moved to mounting hole direction by tightening nut, forces taper boss
Enter in the expansion tube with bar-shaped trough, expansion tube right-hand member is produced axial crushing deformation, opening portion by the effect of axial force
Expand outwardly, extruding installation hole wall, enough normal pressures are provided for resistance to plucking resistance after taper boss is superimposed with expansion tube thickness, real
The fastening of existing expansion bolt；
When needing to remove, nut is unscrewed first and is screwed to concordant with screw rod left end, is quickly hammered downwards using hand hammer
Screw head, the screw rod with taper boss exit from expansion tube, now, nut are backed out from screw rod, then in pad
In the presence of II, by proprietary tool card at the step that pad I and pad II are formed, firmly pull up upwards, can by expansion tube from
Extracted in mounting hole, it is i.e. reusable after simple finishing, existing expansion bolt is overcome in the presence of after being not easy to remove and removing
The problem of can not reusing.
The utility model is simple in construction, reasonable in design, by optimizing improvement to existing expansion bolt structure, obtains one
Plant easy to disassemble and recycling expansion bolt.In the demolishing process of expansion bolt, using between the step formed between pad
Gap is impetus, can be taken out expansion tube out of mounting hole by crowbar or special instrument, subsequently to the expansion tube of extraction
After being repaired, the purpose of recycling can be reached.The utility model is mainly used as the fastener fixed temporarily, solid when completing
Surely the aesthetic property after mounting hole site repairing had both been ensure that after pulling out, while the expansion bolt by repairing may be repeated profit
With saving great amount of cost, be worth of widely use.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：1- screw rods, 2- expansion tubes, 3- nuts, 4- taper boss, 5- pads I, 6- pad II, 7- bar-shaped trough, 8-
Spring washer, 9- mounting holes.
Embodiment
The utility model is further elaborated reference picture 1, a kind of repeatable expansion bolt utilized, including screw rod 1
With the expansion tube 2 being enclosed on the outside of it, the left part of screw rod 1 is provided with the nut 3 being threadedly coupled with it, and the right-hand member of screw rod 1 is set
There is right side diameter to be more than left side diameter and more than the taper boss 4 of the internal diameter of expansion tube 2, the left end of expansion tube 2 is provided with and one
Body and the pad I5 on the outside of it, the lateral wall of expansion tube 2 is provided with the right side of pad I5 and external diameter is more than the internal diameter of mounting hole 9
Pad II6, pad I5 external diameter is more than pad II6 external diameter, and the right part side wall of expansion tube 2 is provided with some axially arranged
Bar-shaped trough 7, the spring washer 8 being enclosed on screw rod 1 is provided between nut 3 and pad I5.
In specific implementation process, the repeatable expansion bolt utilized provided by the utility model, by pad I5 and pad
At the step that piece II6 is formed, as impetus when removing.
In the subway tunnel of shield-tunneling construction（The subway tunnel completed using shield excavation machine）Inside it is mounted with that arch steel mixes
Native prefabricated pipe section is coagulated, lay a railway track and applies the buttress that unit walking rails of laying a railway track are installed in man-hour requirement in section of jurisdiction lower half temporarily, with
Meet construction needs, for buttress clipping room away from 1.2m, each buttress need to install four pieces of expansion bolts, and after construction terminates, both sides are residual
The expansion bolt quantity stayed is very huge, removes extremely difficult.
Using the repeatable expansion bolt utilized described in the utility model, coordinate special dismounting and fix tool, no
But solve dismounting problem, more save great amount of cost, obtained the accreditation of society.
Claims (1)
1. a kind of repeatable expansion bolt utilized, including screw rod（1）With the expansion tube being enclosed on the outside of it（2）, it is characterised in that：
Screw rod（1）Left part be provided with the nut being threadedly coupled with it（3）, screw rod（1）Right-hand member be provided with right side diameter be more than a left side
Side diameter and it is more than expansion tube（2）The taper boss of internal diameter（4）, expansion tube（2）Left end be provided with its one and be located at it
The pad I in outside（5）, expansion tube（2）Lateral wall is provided with positioned at pad I（5）Right side and external diameter is more than mounting hole（9）Internal diameter
Pad II（6）, pad I（5）External diameter be more than pad II（6）External diameter, expansion tube（2）Right part side wall be provided with some axial directions
The bar-shaped trough of setting（7）, nut（3）With pad I（5）Between be provided with and be enclosed on screw rod（1）On spring washer（8）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721181439.4U CN207122478U (en) | 2017-09-15 | 2017-09-15 | A kind of repeatable expansion bolt utilized |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721181439.4U CN207122478U (en) | 2017-09-15 | 2017-09-15 | A kind of repeatable expansion bolt utilized |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207122478U true CN207122478U (en) | 2018-03-20 |
Family
ID=61602012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721181439.4U Active CN207122478U (en) | 2017-09-15 | 2017-09-15 | A kind of repeatable expansion bolt utilized |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207122478U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678789A (en) * | 2018-06-25 | 2018-10-19 | 王运来 | A kind of combined anchor |
-
2017
- 2017-09-15 CN CN201721181439.4U patent/CN207122478U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678789A (en) * | 2018-06-25 | 2018-10-19 | 王运来 | A kind of combined anchor |
| CN108678789B (en) * | 2018-06-25 | 2024-03-15 | 王运来 | Combined anchor rod |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |