CN209025320U - A kind of dowel for building - Google Patents
A kind of dowel for building Download PDFInfo
- Publication number
- CN209025320U CN209025320U CN201821454410.3U CN201821454410U CN209025320U CN 209025320 U CN209025320 U CN 209025320U CN 201821454410 U CN201821454410 U CN 201821454410U CN 209025320 U CN209025320 U CN 209025320U
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- China
- Prior art keywords
- dowel
- connecting portion
- ontology
- interconnecting piece
- building
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Abstract
The utility model provides a kind of dowel for building, it includes dowel ontology, it is shaped in the first connecting portion and second connecting portion at dowel ontology both ends, the diameter of first connecting portion and second connecting portion is greater than the diameter of dowel ontology, variable diameter transition part is respectively provided between dowel ontology and first connecting portion and second connecting portion, reduce the case where stress is concentrated, improve the mechanical property of interconnecting piece, simultaneously, the effective sectional area of first connecting portion and second connecting portion is greater than or equal to the effective sectional area of dowel ontology, further ensure the intensity of interconnecting piece.
Description
Technical field
The utility model relates to building field, especially a kind of dowel for building.
Background technique
In building construction process, rigid backbone is the essential part of concrete structure, and rigid backbone is usually by more
Root rigid connection muscle welding fabrication, and the connection between the muscle that is rigidly connected is the master operation of construction.
At present dowel welds upper corresponding nipple, Huo Zhezhi at dowel both ends mainly using being threadedly coupled
It connects to suppress or cut in dowel body end and forms threaded portion, then by the corresponding joints on two dowels for needing to connect
Docking screws fastening, realizes the connection between two dowels.And it is welded to connect and applies in general to the strong dowel of solderability
Connection, and to guarantee that the intensity of connector meets working condition requirement, requirement to welding technique is high, need to be equipped with professional welding equipment and
Professional technician, this method are influenced by factors such as voltage, weather, environment, execution conditions and operation levels, be easy to cause steel
The defect of rigidity of soft tissues degree, rigidity, restorability, destructive characteristics etc., it is difficult to guarantee stable welding quality；Generation is welded simultaneously
Heat can also will affect reinforcing bar microstructure, change its mechanical property.The threaded portion that the compacting of dowel end or cutting are formed
Afterwards, effective sectional area will necessarily reduce, i.e., effective tension area reduces, and bonding strength reduces, so that dowel is upon connection
When by biggish pulling force, end is easily pulled off, and reliability is lower.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of dowel for building with high reliability.
In order to solve the above technical problems, the utility model provides a kind of dowel for building, including dowel ontology, one
Take shape in the first connecting portion and second connecting portion at dowel ontology both ends, the diameter of first connecting portion and second connecting portion is greater than
The diameter of dowel ontology, is respectively provided with variable diameter transition part between dowel ontology and first connecting portion, second connecting portion, and first
Interconnecting piece and the effective sectional area of second connecting portion are greater than or equal to the effective sectional area of dowel ontology.
Preferably, in above-mentioned dowel for building, first connecting portion and second connecting portion are all male threaded joint.
Preferably, in above-mentioned dowel for building, first connecting portion and second connecting portion are all female threaded joint.
Preferably, in above-mentioned dowel for building, first connecting portion is female threaded joint, and second connecting portion is outer spiral shell
Line interconnecting piece.
Preferably, in above-mentioned dowel for building, first connecting portion is male threaded joint, and second connecting portion is pier
Head.
Preferably, in above-mentioned dowel for building, first connecting portion is female threaded joint, and second connecting portion is pier
Head.
Preferably, the screw thread silk crest in above-mentioned dowel for building, on female threaded joint or male threaded joint
Portion and bottom are circular arc.
Preferably, in above-mentioned dowel for building, the peripheral surface of the female threaded joint is male and fomale(M&F).
Preferably, in above-mentioned dowel for building, also there is a taper light bar segment between interconnecting piece and transition part,
And the butt end of taper light bar segment, close to dowel ontology, for taper end close to interconnecting piece, the largest outer diameter of the taper light bar segment is big
In the overall diameter of interconnecting piece.
Preferably, in above-mentioned dowel for building, the variable diameter transition part between dowel ontology and first connecting portion is
Conical section；And/or the variable diameter transition part between dowel ontology and second connecting portion is conical section.
Compared with prior art, the utility model has the advantage that
1. rigid connection muscle for building provided by the utility model, dowel ontology and first connecting portion, second connecting portion
Between transition part reduce stress concentrate the case where, improve the mechanical property of interconnecting piece；In addition, first connecting portion, second
Interconnecting piece is the overstriking portion for being shaped in dowel ontology both ends, so that the effective sectional area of first connecting portion, the second connection
The effective sectional area in portion is greater than the effective sectional area of dowel ontology, ensure that the bonding strength of dowel end, and processing side
Just.
2. the utility model solves asking for the effective sectional area that angular thread is easy to wear, trapezoidal thread easily reduces dowel
Screw thread on threaded joints is used the angle R screw thread, so that mentioning in the case where not reducing the effective sectional area of interconnecting piece by topic
The abrasion resistant effect and bonding strength of high screw thread.
3. the design of dowel both ends taper light bar segment is so that dowel has when cooperating with concrete component formation mold
Certain sealing function, so in can preventing toward the shaping mold cavity of mold when fill concrete caused by spillage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the dowel for building in embodiment 1；
Fig. 2 is the structural schematic diagram of the dowel for building in embodiment 2；
Fig. 3 is a kind of structural schematic diagram of the dowel for building in embodiment 3；
Fig. 4 is another structural schematic diagram of the dowel for building in embodiment 3；
Fig. 5 is a kind of structural schematic diagram of the dowel for building in embodiment 4；
Fig. 6 is another structural schematic diagram of the dowel for building in embodiment 4；
Fig. 7 is the structural schematic diagram of the angle R screw thread in embodiment 4.
Description of symbols: 1, dowel ontology, 2, male threaded joint, 3, transition part, 4, female threaded joint, 5, interior
Screw thread, 6, taper light bar segment, 7, pier nose.
Specific embodiment
Technical solutions of the utility model in order to facilitate understanding, it is right that the following will be combined with the drawings in the embodiments of the present invention,
The technical scheme in the embodiment of the utility model carries out clear, complete description, it is clear that described embodiment is only this reality
With novel a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, belongs to the model of the utility model protection
It encloses.
Embodiment 1
The present embodiment provides a kind of dowel for building, dowel passes through welding according to actual needs or binding surrounds rigidity
Skeleton, for concrete prefabricated element is prefabricated or concrete cast-in-situ work progress in, dowel for building can be rod iron, reinforcing bar
Or other meet the strip object of stiffness and strength requirement.
As shown in Figure 1, a kind of dowel for building, including dowel ontology 1, first connecting portion, second connecting portion and mistake
Portion 3 is crossed, first connecting portion and second connecting portion are shaped in the both ends of dowel ontology 1, first connecting portion and second respectively
Interconnecting piece is all male threaded joint 2；Specifically, dowel end is formed one section by upset forging process or other modes overstriking
Diameter is greater than the overstriking section of dowel ontology diameter, then processes outer spiral shell by machining or rolling technology on overstriking section
Line, and then male threaded joint 2 is formed, the radial effective sectional area of male threaded joint 2 is greater than or equal to dowel ontology 1
Radial effective sectional area ensure that the tensile strength of interconnecting piece, improve connection reliability；Meanwhile the axial direction of male threaded joint 2
Length is greater than the overall diameter of male threaded joint 2, and the intensity that is screwed on of male threaded joint can be improved.Dowel ontology 1 and outer spiral shell
Transition part 3 is additionally provided between line interconnecting piece 2, transition part 3 can be arc transition or plane transition etc., the setting of transition part 3
Reduce stress concentrate the case where, improve the mechanical property of threaded joints, further reduce threaded joints with connect
The possibility of muscle bulk transition link position fracture.
The working principle of the present embodiment are as follows: dowel can be used for making concrete cast-in-situ construction technology or concrete prefabricated
The male threaded joint of the rigid backbone of component manufacturing process, dowel both ends can pass through nut or tool internal thread component
It is spirally connected, and then is attached or is fixedly mounted with other component.
Embodiment 2
The present embodiment and the structure and working principle of embodiment 1 are essentially identical, the difference is that, as shown in Fig. 2, first
Interconnecting piece and second connecting portion are female threaded joint 4, have internal screw thread 5 on the screw thread hole wall of female threaded joint 4；Specifically
Ground forms the overstriking section of certain length in the end of dowel ontology 1 by upsetting process or other overstriking modes, in overstriking section
One end far from dowel ontology 1 forms band internal thread threaded hole by machining or rolling technology.Threaded hole
Depth is greater than the diameter of threaded hole, the firmness of threaded connection can be improved, the sectional area of female threaded joint 4 is in removal screw thread
Effective sectional area after the sectional area of hole is greater than or equal to the sectional area of dowel ontology 1, ensure that female threaded joint 4 with connect
The consistency of 1 tensile strength of muscle ontology prevents female threaded joint 4 to be pulled off in dowel entirety loading process.
Preferably, the outer peripheral surface of female threaded joint 4 is set as male and fomale(M&F), increases female threaded joint 4 and concrete
Contact area and roughness improve the cohesive force of female threaded joint and concrete.
Embodiment 3
The present embodiment and the structure and working principle of embodiment 1,2 are essentially identical, the difference is that, as shown in Figure 3,4,
First connecting portion is male threaded joint 2, and second connecting portion is female threaded joint 4, is connected in male threaded joint 2 or internal screw thread
Taper light bar segment 6 is additionally provided between socket part 4 and transition part 3, the butt end of taper light bar segment 6 close to dowel ontology 1, lean on by taper end
Nearly interconnecting piece.In carrying out concrete prefabricated element manufacturing process, dowel end is inserted into the installation reserved on mold end plate
Kong Zhong is fixed by bolt or nut etc. and is connected on mold end plate, is screwed in compaction process in bolt or nut, mold
Relative displacement occurs for end plate and taper light bar segment 6, and after bolt or nut screw, the lower end surface of mold end plate compresses taper polished rod
6 outer peripheral surfaces of section can prevent the slip casting into mold so that forming sealing between the mounting hole and dowel reserved on mold end plate
After spillage occurs；It will be appreciated by those skilled in the art that the first connecting portion and second connecting portion of the dowel in embodiment 1,2
Taper light bar segment 6 can be set, also between transition part to achieve the effect that realize sealing in connection procedure.
Embodiment 4
The present embodiment and the structure of embodiment 1 are essentially identical, the difference is that, as shown in Figure 5,6, first connecting portion is
Male threaded joint 2 or female threaded joint 4, second connecting portion are pier nose 7.
Specifically, the largest outer diameter of pier nose 7 is 1.5 times to 2 times of dowel ontology diameter.
Specifically, the screw thread on male threaded joint 2 or female threaded joint 4 is the angle R screw thread；
Specifically, it as shown in fig. 7, the thread form angle a of the angle R screw thread is 55 degree, is formed at the top of screw thread silk tooth and bottom
Circular arc, arc radius r are less than or equal to 0.317mm；The setting of the angle R screw thread increases the wearability of screw thread, while do not subtracting
In the case where 4 effective sectional area of small male threaded joint 2 or female threaded joint, there is better self-lock ability.
The working principle of the present embodiment are as follows: when being installed, the first connecting portion of dowel is screwed on by screw thread, and right
Bolt or nut for answering etc. are connected or are fixedly mounted with, and second connecting portion is clamped into corresponding fixed part or pier nose attachment device, wherein Gu
Determining portion or pier nose attachment device has clamping chamber compatible with 7 card access surface shape of pier nose, increases pier nose 7 and fixed part or pier
The contact area of head attachment device, improves the tensile strength of dowel, those skilled in the art are it should be understood that fixed part
Or pier nose attachment device can be anchor plate, attaching nut, connection sleeve etc..
Above are merely preferred embodiments of the utility model, the protection scope of the utility model is limited with claim
Range subject to, several improvement and profit that those skilled in the art make without departing from the spirit and scope of the utility model
Decorations, also should be regarded as the protection scope of the utility model.
Claims (10)
1. a kind of dowel for building, it is characterised in that: including dowel ontology, be shaped in the of dowel ontology both ends
One interconnecting piece and second connecting portion are respectively provided with variable diameter transition part between dowel ontology and first connecting portion, second connecting portion,
The effective sectional area of first connecting portion and second connecting portion is greater than or equal to the effective sectional area of dowel ontology.
2. dowel for building according to claim 1, it is characterized in that: first connecting portion and second connecting portion are all outer spiral shell
Line interconnecting piece.
3. dowel for building according to claim 1, it is characterized in that: first connecting portion and second connecting portion are all interior spiral shell
Line interconnecting piece.
4. dowel for building according to claim 1, it is characterized in that: first connecting portion is female threaded joint, second
Interconnecting piece is male threaded joint.
5. dowel for building according to claim 1, it is characterized in that: first connecting portion is male threaded joint, second
Interconnecting piece is pier nose.
6. dowel for building according to claim 1, it is characterized in that: first connecting portion is female threaded joint, second
Interconnecting piece is pier nose.
7. according to the described in any item dowels for building of claim 2-6, it is characterized in that: female threaded joint or external screw thread connect
Screw thread in socket part is the angle R screw thread, is respectively set to circular arc at the top and bottom of the silk tooth of screw thread.
8. according to claim 3-4,6 described in any item dowels for building, it is characterized in that: the female threaded joint is outer
Perimeter surface is male and fomale(M&F).
9. dowel for building according to claim 1-6, it is characterized in that: between interconnecting piece and transition part also
With a taper light bar segment, and the butt end of taper light bar segment, close to dowel ontology, taper end is close to interconnecting piece, the cone of light
The largest outer diameter of rod segment is greater than the overall diameter of interconnecting piece.
10. dowel for building according to claim 1, it is characterized in that: between dowel ontology and first connecting portion
Variable diameter transition part is conical section；And/or the variable diameter transition part between dowel ontology and second connecting portion is conical section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821454410.3U CN209025320U (en) | 2018-09-06 | 2018-09-06 | A kind of dowel for building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821454410.3U CN209025320U (en) | 2018-09-06 | 2018-09-06 | A kind of dowel for building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209025320U true CN209025320U (en) | 2019-06-25 |
Family
ID=66877052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821454410.3U Active CN209025320U (en) | 2018-09-06 | 2018-09-06 | A kind of dowel for building |
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| Country | Link |
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| CN (1) | CN209025320U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158863A (en) * | 2019-06-28 | 2019-08-23 | 青岛理工大学 | A kind of reinforcing bar flat head bolt connecting mode |
| CN113588405A (en) * | 2021-08-01 | 2021-11-02 | 北京工业大学 | Device capable of realizing ultrahigh cycle tension-torsion composite fatigue test |
-
2018
- 2018-09-06 CN CN201821454410.3U patent/CN209025320U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158863A (en) * | 2019-06-28 | 2019-08-23 | 青岛理工大学 | A kind of reinforcing bar flat head bolt connecting mode |
| CN113588405A (en) * | 2021-08-01 | 2021-11-02 | 北京工业大学 | Device capable of realizing ultrahigh cycle tension-torsion composite fatigue test |
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