CN203808510U - Through-wall bolt with flat surfaces and trapezoidal threads - Google Patents
Through-wall bolt with flat surfaces and trapezoidal threads Download PDFInfo
- Publication number
- CN203808510U CN203808510U CN201420163861.7U CN201420163861U CN203808510U CN 203808510 U CN203808510 U CN 203808510U CN 201420163861 U CN201420163861 U CN 201420163861U CN 203808510 U CN203808510 U CN 203808510U
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- Prior art keywords
- screw rod
- flat
- wall bolt
- screw
- thread
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- Expired - Fee Related
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Abstract
The utility model discloses a through-wall bolt with flat surfaces and trapezoidal threads, which comprises a screw, wherein fastening pieces can be arranged at the two ends of the screw; trapezoidal or rectangular threads and 2-4 flat surfaces are extruded on the surface of the screw; the flat surfaces run through the whole screw in the length direction; the distance between every two flat surfaces is smaller than the inner diameter of each thread. The through-wall bolt provided by the utility model is an auxiliary component which is used with a building template in a matching manner in the construction industry, the strength of the through-wall bolt is high, the through-wall bolt is convenient to take out from a poured wall body or upright, and can be used repeatedly, so that the construction cost is reduced.
Description
Technical field
The utility model relates to the auxiliary part being used in conjunction with construction formwork in a kind of building trade, specifically a kind of through-wall bolt.
Background technology
Build building column, load bearing wall, shear wall in building field time, be all generally to carry out monobloc cast moulding with steel concrete, need to be at the wall of fluid concrete or the pre-fixed reinforcement frame of stud before fluid concrete, then become the shape of wall or column with template assembly in the outside of reinforcement frame, fluid concrete in the framework then forming in template.In the time building template framework, need to use through-wall bolt by the Template Location on relative two sides, make template form the space of a surrounding enclosing.Through-wall bolt main body is a screw rod, puts into after template at screw rod, need to be screwed into castle nut at the two ends of screw rod, so that template is fixed, sometimes also needs the inner side of castle nut to be inserted in a chevron card.A water bar is also welded in the centre of the screw rod of some through-wall bolt.
The screw rod of the through-wall bolt using at present, after having built, has just been stayed in body of wall or column, can not take out.For example the utility model patent of Chinese patent literature ZL97202964.8 discloses a kind of through-wall bolt, the problem that it wastes time and energy, wastes material, strength deficiency in order to overcome the operation of all-in-one-piece through-wall bolt existence, propose the screw rod of through-wall bolt to be divided into three sections, in every section of screw surface, roll out screw thread, then with coupling nut, three sections are connected as one, weld a splash guard at the middle part of middle screw rod, on the screw rod at two ends, arrange again that waterproof taper is stifled, backing plate, clamp nut.When use, the through-wall bolt being connected is embedded in body of wall, after using, the screw rod at two ends is unloaded in order to using again.The through-wall bolt of this structure still has one end screw rod will stay in body of wall or column, has caused waste.And current most of building is in the time using through-wall bolt, be to put a plastic bushing in through-wall bolt outside, after being used to complete, through-wall bolt is taken out, can save like this building costs.And the screw thread of the through-wall bolt using is at present generally triangle thread, be on a reinforcing bar, to make screw thread by the method for removing material etc. by mechanical processing toolses such as hitch, turning, rollings.The intensity of this bolt is often not high enough or interior tissue is destroyed, in the process of fluid concrete, screw rod can be broken by concrete stone, and after having built, screw rod and concrete are in conjunction with very tight, between nut and screw rod, there is concrete, not quick detachable, screw rod is difficult to take out, if the strength of hammering is excessive, can damage on the contrary body of wall, column, meet the situation of taking out of being difficult to, can only be by sawed-off screw rod or slice off with gas welding torch, so not only cause the waste of through-wall bolt, but also increased construction working amount.
After pouring concrete, also need electromagnetic shaker to shake and make it real close pore-free, the screw rod using is at present prone to and falls back in the time of vibrations, template is become flexible and caused pour mass out of shape, affects workmanship.
Utility model content
The utility model technical issues that need to address are to provide a kind of through-wall bolt, and not only intensity is high for it, and convenient from the body of wall of building or column, take out, and can reuse, and save building costs.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
With a through-wall bolt for the trapezoidal thread of flat, comprise that two ends can arrange the screw rod of securing member, the surface of described screw rod is extruded with screw thread trapezoidal or rectangle and flat, described flat whole length direction that connects screw rod.
Further improvement of the utility model is: described flat arranges two to four on the circumference of screw rod.
Further improvement of the utility model is: described flat face is set to two of symmetry, and the distance between two flat is less than the internal diameter of screw thread.Two flat is angular structures with the external diameter face of cylinder of screw thread and/or the junction on the internal diameter face of cylinder.
Further improvement of the utility model is: described securing member is castle nut and chevron card, and chevron cutting ferrule is connected on screw rod and is slidably matched with the external diameter of screw thread, the threaded engagement on castle nut and screw rod.
Owing to having adopted technique scheme, the technological progress that the utility model is obtained is:
Through-wall bolt of the present utility model not only intensity is high, and due to the existence of flat, after body of wall or column are built, can be very convenient screw rod must be taken out from the body of wall of building or column, can reuse, and saves building costs.The utility model in use, screw rod is being through between the template that forms framework, and put plastic bushing on the screw rod between two templates, then on the screw rod of template outside, be inserted in chevron card, and the castle nut of screwing on, template is fixed to the existence of the corner angle of new screw, in the time that electromagnetic shaker shakes, play the effect that makes screw retaining, ensured workmanship.Screw rod of the present utility model is in the time of vibrations concrete, and castle nut can not fall back, and can keep template not loosening, can not make pour mass out of shape, affects workmanship.After template is put up, can pour into concrete, solidify meet the requirements of after intensity completely at concrete, pull down after castle nut and chevron card and template, impact screw rod with hand hammer, make screw rod in body of wall, produce axial vibrations or movement, can easily screw rod be got like this.In strike process, the concrete that is bonded in screw surface can be by vibration in the gap between plastic bushing and flat, thereby has reduced frictional force and the tensile force of screw rod and plastic bushing, the situation that therefore can not exist screw rod can not get out.And the trapezoidal thread of extrusion modling or rectangular thread surface are more smooth, the tool marks that do not have the removal such as turning, hitch material to form, in the situation between same specification is same, can increase the intensity of screw rod.Flat whole length direction that connects screw rod facilitates screw rod to take out in body of wall.
Flat of the present utility model arranges two to four on the circumference of screw rod, can realize and deposit the concrete function of being fallen by vibration; Flat face is oppositely arranged two, and between nut, there are two spaces, distance between two flat is less than the internal diameter of screw thread, increase the space between flat and sleeve pipe, on screw rod, sticky concrete will drop out after knocking, can more hold by the concrete that vibration is fallen from screw thread, dismounting is just convenient.Screw rod of the present utility model adopts relatively static cold moudling, and it is large that inside screw tissue density becomes, and do not produce torsional deformation, there is no bad stress, thereby in taking into account intensity, ensured good toughness.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the end view of screw rod of the present utility model.
In figure, 1, castle nut, 2, chevron card, 3, screw rod, 4, flat, 5, screw thread, 6, corner angle.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further details:
With a through-wall bolt for the trapezoidal thread of flat, as shown in Figure 1 and Figure 2.It comprises a screw rod 3, and screw rod 3 two ends can arrange securing member.The surface of screw rod 3 is provided with screw thread 5 trapezoidal or rectangle and two to four flat 4, and flat 4 connects the whole length direction of screw rod 3.Screw thread of the present utility model preferably adopts the mode moulding of extruding, if certainly do not adopt the mode of extruding to process, but adopt the mode of the removal materials such as turning, hitch to process, that screw thread need to be processed is very smooth, or the diameter that strengthens screw rod, also can reach and put forward high-intensity object.
Flat 4 of through-wall bolt of the present utility model is preferably arranged to symmetrical two, this two flat 4 is oppositely arranged on the radially both sides of screw rod, distance between two flat 4 is less than the internal diameter of screw thread 5, and should be arranged to corner angle 6 structures with the hinged place on the external diameter face of cylinder of screw thread 5 for two flat 4, and should not lead into fillet, two flat 4 also can be like this with the junction on the internal diameter face of cylinder of screw thread 5.As shown in Figure 2.
Securing member described in the utility model is castle nut 1 and chevron card 2 preferably, in chevron card, there is no screw thread, chevron card 2 is socketed on screw rod 3, it is the external diameter that the internal diameter of chevron card 2 is slightly larger than screw thread, be slidably matched with the external diameter of screw thread 5, in castle nut 1, be also arranged to trapezoidal thread or rectangular thread, coordinate with the screw thread 5 on screw rod 3.Castle nut and chevron card can adapt to any template or other member.
Claims (5)
1. the through-wall bolt with the trapezoidal thread of flat, comprise that two ends can arrange the screw rod of securing member (3), it is characterized in that: the surface of described screw rod (3) is extruded with screw thread trapezoidal or rectangle (5) and flat (4), described flat (4) connect the whole length direction of screw rod (3).
2. the through-wall bolt of a kind of trapezoidal thread with flat according to claim 1, is characterized in that: described flat (4) arrange two to four on the circumference of screw rod (3).
3. the through-wall bolt of a kind of trapezoidal thread with flat according to claim 2, is characterized in that: described flat (4) are set to symmetrical two, and the distance between two flat (4) is less than the internal diameter of screw thread (5).
4. the through-wall bolt of a kind of trapezoidal thread with flat according to claim 3, is characterized in that: two flat (4) are corner angle (6) structures with the external diameter face of cylinder of screw thread (5) and/or the junction on the internal diameter face of cylinder.
5. the through-wall bolt of a kind of trapezoidal thread with flat according to claim 1, it is characterized in that: described securing member is castle nut (1) and chevron card (2), chevron card (2) is socketed in screw rod (3) external diameter upper and screw thread (5) and is slidably matched, and castle nut (1) coordinates with the screw thread (5) on screw rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420163861.7U CN203808510U (en) | 2014-04-07 | 2014-04-07 | Through-wall bolt with flat surfaces and trapezoidal threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420163861.7U CN203808510U (en) | 2014-04-07 | 2014-04-07 | Through-wall bolt with flat surfaces and trapezoidal threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203808510U true CN203808510U (en) | 2014-09-03 |
Family
ID=51447287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420163861.7U Expired - Fee Related CN203808510U (en) | 2014-04-07 | 2014-04-07 | Through-wall bolt with flat surfaces and trapezoidal threads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203808510U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106284994A (en) * | 2016-09-22 | 2017-01-04 | 郝建波 | A kind of novel building plate-like pull bar and preparation method thereof |
-
2014
- 2014-04-07 CN CN201420163861.7U patent/CN203808510U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106284994A (en) * | 2016-09-22 | 2017-01-04 | 郝建波 | A kind of novel building plate-like pull bar and preparation method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20210407 |