CN201103240Y - Expansion type drawknot screw - Google Patents
Expansion type drawknot screw Download PDFInfo
- Publication number
- CN201103240Y CN201103240Y CNU2007201847256U CN200720184725U CN201103240Y CN 201103240 Y CN201103240 Y CN 201103240Y CN U2007201847256 U CNU2007201847256 U CN U2007201847256U CN 200720184725 U CN200720184725 U CN 200720184725U CN 201103240 Y CN201103240 Y CN 201103240Y
- Authority
- CN
- China
- Prior art keywords
- drawknot
- expanding
- screw rod
- pull bar
- typed
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an expanding typed drawknot screw rod that is applicable to temporary or permanent drawknot of buildings, which is used for embedded steel dowels by substituting posts and beam plates, the drawknot when a post formwork is erected, etc. The expanding typed drawknot screw rod pertains to the constructional components connected with a building structure which consists of an expanding bolt and a tie bar with screw threads, wherein, the expanding bolt is matched and connected with the tie bar in a screw way. The expanding typed drawknot screw rod has simple structure, convenient installation and flexible use and also has the functions of drawknot, load bearing, etc.
Description
Technical field
The utility model discloses a kind of intumescent drawknot screw rod, be applicable to the drawknot temporarily or permanently of building, be used to replace the pre-doweling of post, beam slab, the drawknot when column template installs etc. belong to the construction member that building structure is connected.
Background technology
At present, in building buildings such as factory building or inhabitation building, reach certain span in the metope cylinder need be set, when cylinder is poured into and continues high level again behind the first floor height and build, for making the lower prop lateral surface in conjunction with smooth, need to fix at the cylinder incorporation range with template, and support shuttering often need be provided with tension member on cylinder, traditional tension member is the mode that adopts pre-buried threaded rod, promptly before concrete column is built, perforate on template is stretched into by the hole on the template tension member in the cylinder framework, carry out poured concrete again behind pre-buried the finishing.Its shortcoming is: it is numerous and diverse to construct, after having constructed, the embedded bar amputation that need will expose cartridge outer surface, because amputation trouble effort, if handle bad, can make the damaged surface breakage bigger, it is also big to repair area so, and reinforcing bar is easy to become rusty the surface and influences the attractive in appearance of metope after permanent exposing to the sun and rain.
In addition, in secondary structure during the drawknot of the post of constructional column, collar tie beam, lintel etc. and frame construction or beam, common constructure scheme is: build at body of wall and finish and before concrete do not solidify, on a side template that will combine, punch with cylinder, insert one then and intercepted the Len req reinforcing bar, and have half to expose that template is outer will to be combined with cylinder.Also having a kind of scheme commonly used is to adopt the anchoring agent to connect, promptly concrete wall build finish and form removal after, to on the side that cylinder connects, punch, behind the clear hole with the anchoring agent on request with in the injection holes of two groups of deployed backs of A, B, insert reinforcing bar then and get final product.Ratio was difficult for controlling when its shortcoming was to prepare burden, judge with feeling entirely, the easy like this quality instability that causes, and owing to the anchoring agent after the preparation was promptly solidified in a few minutes, if misoperation very easily causes waste, other does not very easily cause the anchoring failure as moist, clear hole is clean etc.
The utility model content
The utility model is at the deficiencies in the prior art, and purpose is to provide a kind of intumescent drawknot screw rod simple in structure, easy for installation, has functions such as drawknot and carrying.
The purpose of this utility model is achieved in that a kind of intumescent drawknot screw rod, it is characterized in that: be made up of expansion bolt and threaded pull bar, expansion bolt and pull bar are spiral being connected.
The utility model compared with prior art, advantage is to install conveniently, bearing capacity is strong, drawknot is effective, convenient disassembly, applying flexible; When being applied in the drawknot that column template installs, after having operated, pull bar is detachable and can reuse, and greatly reduces construction cost.Drawknot or support its template when the utility model is specially adapted to being connected of post and post, post and beam etc.In addition, the advantage of comparing with pre-doweling in the prior art and anchoring plantation joint bar is: easy to operate, laborsaving, it is more accurate to locate, the drawknot better effects if.
Below in conjunction with description of drawings and specific embodiment the utility model is further specified:
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model.
The specific embodiment
As Fig. 1, a kind of intumescent drawknot screw rod is made up of the pull bar 1 of expansion bolt 2 and threaded 11, and expansion bolt 2 is spiral being connected with pull bar 1.
When this member is located as the support of template, outer upper end mouth at existing post omits with upper/lower positions electricity consumption hammer drill hole, the rear end of expansion bolt of the present utility model is inserted in the hole, placed-depth is about 10cm, the rear end distending of expansion bolt fully is connected with the column body concrete structure, then with in the spiral screwed hole that is screwed into expansion bolt of pull bar, this moment pull bar, the lateral surface of expansion bolt and cylinder is perpendicular, then the template bottom is placed on the pull bar 1, template is positioned at the centre position of pull bar 1 and is advisable, install left and right sides montant by routine techniques in the template outside and around pull bar 1 then, the montant cross bar etc. that superposes outward, with nut that template is fastening at last, can carry out the cylinder of last layer after template is fixing and build, build finish after the old and new's cylinder be connected and be integral, glacing flatness is better, and during dismounting, pull bar 1 spiral back-outed to get final product, what need not to require great effort cuts off pull bar with saw or welding tool, and complete getting final product repaired in the hole that stays of pull bar 1 then.Because traditional expansion bolt has been passed through antirustization processing, so can guarantee this mend body of wall not corrosion forever.Act on this moment, pull bar 1 is suitable to adopt a grade reinforcing steel to be processed as, and its rebar surface integral body is processed into screw thread, and this screw thread and expansion bolt are installed suitable.
The utility model also is used for vertical drawknot of building structure, during as the drawknot of the post of constructional column in secondary structure, collar tie beam, lintel etc. and frame construction or beam, and modes such as alternative existing pre-doweling of the utility model or anchoring plantation joint bar.Its operating process is: expansion bolt 2 is installed on the top of the bottom column of having built, pull bar 1 is screwed in the expansion bolt 2 gets final product, then on this cylinder routinely construction sequence build cylinder or beam.Make lower prop or beam column body drawknot firmly up and down after building, the drawknot performance reaches construction reference fully.Act on this moment, pull bar 1 borrow is advisable with two grade reinforcing steels, and the one end is processed into the screw thread suitable with expansion bolt.
Claims (1)
1, a kind of intumescent drawknot screw rod is characterized in that: the pull bar (1) by expansion bolt (2) and threaded (11) is formed, and expansion bolt (2) is spiral being connected with pull bar (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201847256U CN201103240Y (en) | 2007-10-26 | 2007-10-26 | Expansion type drawknot screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201847256U CN201103240Y (en) | 2007-10-26 | 2007-10-26 | Expansion type drawknot screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201103240Y true CN201103240Y (en) | 2008-08-20 |
Family
ID=39950264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201847256U Expired - Fee Related CN201103240Y (en) | 2007-10-26 | 2007-10-26 | Expansion type drawknot screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201103240Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696561B (en) * | 2009-11-09 | 2011-01-19 | 上海交通大学 | Cement concrete road surface pull rod |
| CN102071757A (en) * | 2010-07-17 | 2011-05-25 | 殷瑞根 | Cast-in-place steel concrete structure masonry body drawing piece for buildings |
| CN108331257A (en) * | 2018-01-19 | 2018-07-27 | 淮阴工学院 | A kind of FRP pipe concrete coupled columns and preparation method thereof with reinforcing rib |
-
2007
- 2007-10-26 CN CNU2007201847256U patent/CN201103240Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696561B (en) * | 2009-11-09 | 2011-01-19 | 上海交通大学 | Cement concrete road surface pull rod |
| CN102071757A (en) * | 2010-07-17 | 2011-05-25 | 殷瑞根 | Cast-in-place steel concrete structure masonry body drawing piece for buildings |
| CN102071757B (en) * | 2010-07-17 | 2013-07-31 | 徐盛莉 | Connection method of cast-in-place steel concrete structure masonry body drawing piece for buildings |
| CN108331257A (en) * | 2018-01-19 | 2018-07-27 | 淮阴工学院 | A kind of FRP pipe concrete coupled columns and preparation method thereof with reinforcing rib |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20080820 Termination date: 20151026 |
|
| EXPY | Termination of patent right or utility model |