CN2608743Y - Special-purpose feed screw nut for fixed formwork - Google Patents
Special-purpose feed screw nut for fixed formwork Download PDFInfo
- Publication number
- CN2608743Y CN2608743Y CN 03242628 CN03242628U CN2608743Y CN 2608743 Y CN2608743 Y CN 2608743Y CN 03242628 CN03242628 CN 03242628 CN 03242628 U CN03242628 U CN 03242628U CN 2608743 Y CN2608743 Y CN 2608743Y
- Authority
- CN
- China
- Prior art keywords
- screw mandrel
- sleeve
- sleeve cap
- screw
- nut
- 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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- Moulds, Cores, Or Mandrels (AREA)
Abstract
The utility model pertains to accessories for construction, in particular to a screw mandrel for fixing template and a special-purpose nut. The place where the thread of the screw mandrel disappears is provided with a screw stop groove which is arranged at one end or two ends of the screw mandrel and can be shaped on the screw mandrel at one time. The special nut consists of a sleeve with the inner side provided with screw thread and the outside surface with a circle of lug bosses and a sleeve cap that sleeves on the sleeve and is a hollow one. A strengthening rib is arranged between inner wall of the sleeve cap and the sleeve cap ektexine. Due to the limit of the screw stop groove, the distance between the templates is fixed. The steel screw mandrel is arranged in the cast concrete, which improves the stress bearing capacity of the preformed unit.
Description
Technical field
The utility model belongs to annex for building, particularly is used for fixing screw mandrel and specialized nut thereof that template is used.
Background technique
In civil construction project, during the preparation precast units, usually be materials such as concrete to be filled into make predetermined body in the mould, and when building the mould of precast units, adjust the member of template spacing with some, be commonly called as " screw mandrel ".Existing screw mandrel is the screwed steel poles in a kind of two ends, and the D type of screwing at the two ends of screw mandrel nut is fixed template in the outside of D type nut then, and by changing the screw mandrel of different length, adjusts the thickness of concreting.Though this screw mandrel is simple to operate, easy to use, but because must there be screw thread at the two ends of screw mandrel, the D type of so just screwing on nut, this has just caused the spacing that is not easy to adjust template, because, screw thread on screw mandrel is gradually to disappear to the greatest extent, and that the screw thread vanishing point on each screw mandrel is difficult to accomplish is the same, and also will be used with D type nut, just is difficult to when twisting D type nut to accomplish that the template that is fixed is up and down or between left and right apart from the same, because the difference of this spacing, must cause the uneven distribution of concreting part, and, bring hidden danger also for the safety of building with the precast concrete construction of buildings of this uneven distribution.
Summary of the invention
One of the purpose of this utility model is under the precursor that is not increasing existing screw mandrel cost, overcomes the spacing that existing screw mandrel is not easy to adjust template, provides a kind of easy to use, easily adjusts the screw mandrel that the fixed die plate of template spacing is used.
Another purpose of the present utility model provides a kind of specialized nut of screw mandrel, so that reduce the expense of screw mandrel with nut.
The purpose of this utility model be achieved in that on the metal screw mandrel screw thread gradually to the greatest extent disappearance place have a screw thread by groove.
Describedly open one or both ends at screw mandrel by groove.
The described groove that ends can one shape when the screw thread on the processing screw mandrel.
The specialized nut of the utility model screw mandrel is made up of a metal sleeve and a plastic sheath pipe cap, and the internal surface merit of described sleeve pipe has screw thread, at the outer surface of sleeve pipe one circle projection is arranged, and the sleeve cap of a truncated conical shape is enclosed within on the sleeve pipe.
The sleeve cap of described truncated conical shape is enclosed within and is meant on the sleeve pipe that the little one side of sleeve cap diameter is enclosed within on the sleeve pipe.
Described sleeve cap is a hollow sleeve cap, between hollow sleeve cap inwall and sleeve cap outer wall stiffening rib is arranged.
The utility model has screw thread by groove on screw mandrel, like this when twisting the specialized nut that D type nut or the utility model provide, owing to there is screw thread to end the restriction of groove, so nut just can not be twisted in the centre toward screw mandrel, thereby also just fixed the spacing of template, and to adjust the thickness of precast concrete, the length of changing screw mandrel equally just can realize; And specialized nut of the present utility model so in use can unload fully, can be saved the labour force because cost is low so in a large number, reduces engineering cost.
Description of drawings
Fig. 1. the utility model screw mandrel two ends schematic representation behind the nut of screwing on.
The master of Fig. 2 A. the utility model sleeve pipe looks schematic representation.
The schematic top plan view of Fig. 2 B. the utility model sleeve pipe.
The master of Fig. 3 A. the utility model sleeve cap looks schematic representation.
The schematic top plan view of Fig. 3 B. the utility model sleeve cap.
Reference character:
1. screw mandrel 2. screw threads 3. are by groove
4. protruding 5. sleeve pipes, 6. sleeve caps
7. sleeve cap inwall 8. sleeve cap outer walls 9. stiffening ribs
Embodiment
See also Fig. 1-4.One steel screw mandrel 1, its two ends merit has screw thread 2, has a screw thread by groove 3 at screw thread gradually most destination county in the middle of screw mandrel.
The specialized nut of one screw mandrel 1, form by a steel sleeve pipe 5 and a plastic sheath pipe cap 6, internal surface merit at sleeve pipe 5 has screw thread 2, and the outer surface at 1/3 place of sleeve pipe 5 one ends has a circle projection 4, one side little being enclosed within on the sleeve pipe 5 of sleeve cap 6 diameters of a truncated conical shape.
For economical with materials, sleeve cap 6 makes hollow (interlayer) shape, for gaining in strength, between hollow sleeve cap 6 inwalls 7 and sleeve cap outer wall 8 stiffening rib 9 is arranged.
The specialized nut of screwing at the two ends of screw mandrel, fix template in the outside of nut then, a main body screw mandrel that has iron plate is screwed on the other end of nut, and props up template by the iron plate on the theme screw mandrel, by tightening the nut on the main body screw mandrel, allow iron plate fix template again.
Owing to there is screw thread to end the restriction of groove, so just fixed the spacing of template, the steel screw mandrel has prevented from the space left in the concrete to have improved the ability that prefabricated component bears pressure in the concrete of building simultaneously.
Claims (5)
1. screw mandrel that fixed die plate is used is characterized in that: the screw thread on screw mandrel gradually to the greatest extent disappearance place have a screw thread by groove.
2. screw mandrel as claimed in claim 1 is characterized in that: describedly open one or both ends at screw mandrel by groove.
3. the specialized nut as any described screw mandrel of claim 1-2 is made up of a sleeve pipe and a sleeve cap, it is characterized in that: the internal surface merit of described sleeve pipe has screw thread, at the outer surface of sleeve pipe one circle projection is arranged, and a sleeve cap is enclosed within on the sleeve pipe.
4. nut as claimed in claim 3 is characterized in that: described sleeve cap is a hollow sleeve cap, between hollow sleeve cap inwall and sleeve cap outer wall stiffening rib is arranged.
5. as claim 3 or 4 described nuts, it is characterized in that: described sleeve cap is a truncated conical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03242628 CN2608743Y (en) | 2003-03-27 | 2003-03-27 | Special-purpose feed screw nut for fixed formwork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03242628 CN2608743Y (en) | 2003-03-27 | 2003-03-27 | Special-purpose feed screw nut for fixed formwork |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2608743Y true CN2608743Y (en) | 2004-03-31 |
Family
ID=34168790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03242628 Expired - Fee Related CN2608743Y (en) | 2003-03-27 | 2003-03-27 | Special-purpose feed screw nut for fixed formwork |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2608743Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206229A (en) * | 2019-06-10 | 2019-09-06 | 上海建工四建集团有限公司 | A kind of concrete column splicing structure and its construction method |
-
2003
- 2003-03-27 CN CN 03242628 patent/CN2608743Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206229A (en) * | 2019-06-10 | 2019-09-06 | 上海建工四建集团有限公司 | A kind of concrete column splicing structure and its construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |