CN104988906A - Stretching and drawing buckle - Google Patents
Stretching and drawing buckle Download PDFInfo
- Publication number
- CN104988906A CN104988906A CN201510311803.3A CN201510311803A CN104988906A CN 104988906 A CN104988906 A CN 104988906A CN 201510311803 A CN201510311803 A CN 201510311803A CN 104988906 A CN104988906 A CN 104988906A
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- Prior art keywords
- stretching
- pitman
- inwall
- stretching end
- link
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- Clamps And Clips (AREA)
Abstract
The invention belongs to the technical field of building components and relates to a stretching and drawing buckle. The stretching and drawing buckle solves the technical problem that connection stretching and drawing force in the prior art remains to be improved. The stretching and drawing buckle comprises two connecting nuts, and a connecting rod penetrates the two connecting nuts. The two ends of the connecting rod are each provided with an expanding part with the outer diameter larger than that of the connecting rod. Each connecting nut comprises a connecting end and a stretching and drawing end which are connected with each other. Internal threads are arranged on the inner wall of each connecting end. A through hole for the connecting rod to pass is formed in the inner wall of each stretching and drawing end. The hole diameter of the inner wall of each stretching and drawing end is smaller than that of the inner wall of the corresponding connecting end, and therefore the joints of the inner walls of the stretching and drawing ends and the connecting ends form clamping bosses capable of clamping the expanding parts on the connecting rod, and the outer surface of each clamping boss is formed by connecting at least two supporting faces which are not located on the same plane. The stretching and drawing buckle has high strength and higher stretching and drawing force, and connection is more reliable.
Description
Technical field
The invention belongs to building unit technical field, relate to a kind of stretch-draw fastener, be applicable to prefabricated component.
Background technology
Chinese patent literature pushes up pile extension and prefabricated component [publication number: C N1740456A] under disclosing a kind of upper spiral shell, fastener is female thread structure or in external thread structure or in interior interface arrangment or in outer interface arrangment, the fastener Qiang Di center of female thread structure, external thread structure, interior interface arrangment, outer interface arrangment has reinforced hole, the periphery of reinforced hole one end is reinforcing bar end upset chuck, and the heading of reinforcing bar is connected in chuck.
On the program is fundamentally eliminated, lower pile crown plate, ensure that the steel hoop on pile tube skeleton can not only around to pile tube skeleton two ends, and can guarantee that its point is welded on the longitudinal reinforcement of skeleton, guarantee the uniformity of pile tube intensity, fundamentally avoid the fracture of pile tube with broken, solve some longitudinal reinforcements in pile tube and longitudinally hale extension uniformity, guarantee the uniformity of industrialized mass production pile tube inherent quality, but by the impact of bar diameter error, there is reinforcing bar and rising draws nut or top to draw nut contact area little, stress signal transmits weak, be not easy to detect, secondly, because reinforcing bar end upset is large, not only need during making, to reinforcing bar heating high-temperature process, to cause the intensity of reinforcing bar end upset and reinforcing bar end upset joint portion reinforcing bar to decline, affect reinforced steel bar strength, and waste of raw materials greatly, consume energy high.
But in actual applications, the change in shape of reinforcing bar end upset is comparatively large, can not realize good laminating, cause declining by pulling force, affect functional performance with the contact site of chuck.
Summary of the invention
The object of the invention is for the problems referred to above, the stretch-draw fastener that a kind of stretching force is higher is provided.
For achieving the above object, present invention employs following technical proposal: a kind of stretch-draw fastener, comprise two attaching nuts, pitman is located on two attaching nuts, the two ends of pitman have the portion of expanding that an external diameter is greater than pitman external diameter respectively, the center line of two attaching nuts overlaps with the center line of pitman, the chuck one by one tensioned fit of two enlargement on pitman not and on two attaching nuts, described attaching nut comprises interconnective link and stretching end, internal thread is provided with at link inwall, the through hole that pitman can be allowed to pass through is provided with at stretching end inwall, and the inwall aperture of stretching end is less than the inwall aperture of link, thus make the junction of stretching end inwall and link inwall form the chuck in the portion of expanding can blocked on pitman, the external surface of described chuck by least two not supporting surface be at grade interconnected and form, and the supporting surface be connected with the inwall of through hole and through-hole wall are in smoothly transitting,
In above-mentioned stretch-draw fastener, the outer wall of described stretching end is the polygon that limit number is not less than 4, between the outer wall and the outer wall of link of stretching end, have catching step, and when jig blocks stretching end, described catching step can stop jig to slide to link.
In above-mentioned stretch-draw fastener, described link sidewall offers portion of the expanding passage that the portion of expanding on pitman can be allowed to enter, described stretching end sidewall is provided with the rod iron passage that pitman can be allowed to enter and described rod iron passage extends to the bottom of stretching end, expands portion's expanding channels rod iron passage.
Compared with prior art, the invention has the advantages that: there is higher intensity and the stretching force of Geng Gao, connect more reliable.
Accompanying drawing explanation
Fig. 1 is structural representation provided by the invention;
Fig. 2 is the structural representation of attaching nut provided by the invention;
Fig. 3 is the another kind of structural representation of attaching nut provided by the invention;
Fig. 4 is the another kind of structural representation of attaching nut provided by the invention;
Fig. 5 is the another kind of structural representation of attaching nut provided by the invention;
Fig. 6 is the another kind of structural representation of attaching nut provided by the invention;
Fig. 7 is the A direction view of Fig. 2;
Fig. 8 is the A direction view of Fig. 3;
Fig. 9 is the schematic diagram that the present invention uses on prefabricated component;
Figure 10 is the structural representation of the attaching nut of prior art;
Figure 11 is stretching process schematic diagram of the present invention.
In figure: attaching nut 1, pitman 2, expand portion 3, chuck 4, link 5, stretching end 6, through hole 7, supporting surface 8, catching step 9, expand portion's path 10, rod iron passage 11, fixed head 91, stretch board 92, set bolt 93, tensioning bolt 94, positioning sleeve 95, stretch-draw junction plate 96, screw mandrel 97, tensioning nut 98, pipe die 99.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Figure 10 shows that the attaching nut 1 of prior art, its chuck 4 only has a supporting surface 8, and the surface due to the portion of expanding 3 is irregular shape, and therefore chuck 4 contact area when contacting with the portion of expanding 3 is less, and as stretching force is excessive, expanding portion 3 easily departs from chuck 4.The outer wall of link 5 and stretching end 6 is arc in addition.
The invention provides a kind of stretch-draw fastener, as depicted in figs. 1 and 2, comprise two attaching nuts 1, pitman 2 is located on two attaching nuts 1, the two ends of pitman 2 have the portion of expanding 3 that an external diameter is greater than pitman 2 external diameter respectively, the center line of two attaching nuts 1 overlaps with the center line of pitman 2, two on pitman 2 expand portion 3 respectively with chuck 4 tensioned fit one by one on two attaching nuts 1, described attaching nut 1 comprises interconnective link 5 and stretching end 6, internal thread is provided with at link 5 inwall, the through hole 7 that pitman can be allowed to pass through is provided with at stretching end 6 inwall, and the inwall aperture of stretching end 6 is less than the inwall aperture of link 5, thus make the junction of stretching end 6 inwall and link 5 inwall form the chuck 4 in the portion of expanding 3 can blocked on pitman, the external surface of described chuck 4 by least two not supporting surface 8 be at grade interconnected and form, and the supporting surface 8 be connected with the inwall of through hole 7 and through hole 7 inwall are in smoothly transitting,
As shown in Figure 1, if make to realize tensioning between two attaching nuts 1 to connect, can two attaching nuts 1 be nested in pitman 2, the two ends pier of pitman 2 slightly forms portion 3 of expanding afterwards, expanding portion 3 is stuck in chuck 4, again by two attaching nut 1 stretch-draw round about, two attaching nuts 1 can be made to realize tensioning and to connect.
Wherein, supporting surface 8 can be planar shaped, also can be camber line.Attaching nut 1 shown in Fig. 2 has two supporting surfaces 8, is planar shaped; Attaching nut 1 shown in Fig. 3 is also two supporting surfaces 8, and one of them supporting surface 8 is plane structure, and another supporting surface 8 is arcuate structure, and the supporting surface 8 of arcuate structure connects the inwall of stretching end 6; Two supporting surfaces 8 of the attaching nut 1 shown in Fig. 4 are arcuate structure; Attaching nut 1 shown in Fig. 6 has 3 supporting surfaces 8, is planar shaped.
The outer wall of stretching end 6 is the polygon that limit number is not less than 4, and as shown in Figure 7, stretching end 6 outer wall is regular hexagon, and as shown in Figure 8, stretching end 6 outer wall is in square.Preferably, this polygonal limit number is the integral multiple of 2, also can be 8 limit shapes, 10 limit shapes etc.Between the outer wall and the outer wall of link 5 of stretching end 6, there is catching step 15, when jig blocks stretching end 6, described catching step 15 can stop jig to slide to link 5, thus makes jig fix stretching end, can connecting screw be screwed in link 5, be convenient to stretch-draw.
Attaching nut 1 also has another kind of scheme, can pitman 2 thick for pier be inserted in attaching nut, as shown in Figure 5, concrete structure is on attaching nut 1 sidewall, offer portion of the expanding path 10 that the portion of expanding 3 on pitman can be allowed to enter, attaching nut 1 sidewall is provided with the rod iron passage 11 that pitman 2 can be allowed to enter and described rod iron passage 11 extends to the bottom of stretching end 6, the portion's path 10 that expands connects rod iron passage 11, expanding portion 3 and pitman 2 first enters into respectively and expands portion's path 10 and rod iron passage 11 and go forward side by side that to enter into attaching nut 1 inner for a step, the portion of expanding 3 can be blocked after the chuck 4 of attaching nut 1 moves toward direction, the portion of expanding 3.The advantage of this design be can by pitman 2 two ends in advance pier slightly form the portion of expanding 3, then to be connected with attaching nut 1, thus for different Joining Technology.
Following table is the attaching nut 1 of the application and attaching nut 1 intensity contrast of prior art.
As can be seen from the above table, compared to prior art, the requirement of strength of the application is higher, and namely the application can reach higher stretching force, connects more reliable.By analysing and comparing, the application generally will improve 10-20% than the intensity of prior art.
Fig. 9 is the schematic diagram that the present invention uses on prefabricated component, and pitman 2 is arranged in prefabricated component 100, and two attaching nuts 1 are set in pitman 2 and are positioned at prefabricated component 100 two ends, be screwed into connector, can realize stretch-draw work in attaching nut 1.
Figure 11 shows that the schematic diagram of attaching nut 1 stretching process.The attaching nut 1 at pitman 2 two ends is connected on fixed head 91 and stretch board 92, the attaching nut 1 at fixed head 91 place tightens with set bolt 93 thus attaching nut 1 is fixedly connected with fixed head 91, the attaching nut 1 at stretch board 92 place is spirally connected with tensioning bolt 94, tensioning bolt 94 is fixed on stretch board 92, the two ends of positioning sleeve 95 connect stretch board 92 and stretch-draw junction plate 96, tensioning nut 98 is fixed on stretch-draw junction plate 96, screw mandrel 97 is affixed with tensioning nut 98, rotary screw rod 97, tensioning nut 98 drives stretch-draw junction plate 96 to move, thus drive stretch board 92 to move, the attaching nut 1 at pitman 2 two ends blocks the portion of expanding 3 respectively, thus be tensioned.In tensioning process, chuck 4 is squeezed state with expanding the contact surface in portion 3, and therefore, contact surface area is larger, then the stretching force that can bear is larger.In stretching process, as wanted retainer shaft to linearly, stretch board 92, positioning sleeve 95 and stretch-draw junction plate 96 are all nested in pipe die 99.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ attaching nut 1, pitman 2 herein, expand portion 3, chuck 4, link 5, stretching end 6, through hole 7, supporting surface 8, catching step 9, the terms such as portion's path 10, rod iron passage 11, fixed head 91, stretch board 92, set bolt 93, tensioning bolt 94, positioning sleeve 95, stretch-draw junction plate 96, screw mandrel 97, tensioning nut 98, pipe die 99 that expand, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (3)
1. a stretch-draw fastener, it is characterized in that, comprise two attaching nuts (1), pitman (2) is located on two attaching nuts (1), the two ends of pitman (2) have the portion of expanding (3) that an external diameter is greater than pitman (2) external diameter respectively, the center line of two attaching nuts (1) overlaps with the center line of pitman (2), two on pitman (2) expand portion (3) respectively with chuck (4) tensioned fit one by one on two attaching nuts (1), described attaching nut (1) comprises interconnective link (5) and stretching end (6), internal thread is provided with at link (5) inwall, the through hole (7) that pitman can be allowed to pass through is provided with at stretching end (6) inwall, and the inwall aperture of stretching end (6) is less than the inwall aperture of link (5), thus make the junction of stretching end (6) inwall and link (5) inwall form the chuck (4) in the portion of expanding (3) can blocked on pitman, the external surface of described chuck (4) by least two not supporting surface (8) be at grade interconnected and form, and the supporting surface (8) be connected with the inwall of through hole (7) and through hole (7) inwall are in smoothly transitting.
2. stretch-draw fastener according to claim 1, it is characterized in that, the outer wall of described stretching end (6) is the polygon that limit number is not less than 4, between the outer wall and the outer wall of link (5) of stretching end (6), there is catching step (9), when jig blocks stretching end (6), described catching step (9) can stop jig to slide to link (5).
3. stretch-draw fastener according to claim 1 and 2, it is characterized in that, described link (5) sidewall offers the portion of expanding passage (10) that the portion of expanding (3) on pitman (2) can be allowed to enter, described stretching end (6) sidewall is provided with the rod iron passage (11) that pitman (2) can be allowed to enter and described rod iron passage (11) extends to the bottom of stretching end (6), and the portion's passage (10) that expands connects rod iron passage (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510311803.3A CN104988906B (en) | 2015-06-09 | 2015-06-09 | tensioning fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510311803.3A CN104988906B (en) | 2015-06-09 | 2015-06-09 | tensioning fastener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104988906A true CN104988906A (en) | 2015-10-21 |
| CN104988906B CN104988906B (en) | 2017-08-01 |
Family
ID=54300788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510311803.3A Active CN104988906B (en) | 2015-06-09 | 2015-06-09 | tensioning fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104988906B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113303621A (en) * | 2021-07-07 | 2021-08-27 | 海宁智盛自动化设备有限公司 | Pull buckle component for sofa and assembling method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1219728A1 (en) * | 1983-07-08 | 1986-03-23 | Ленинградский Ордена Ленина Институт Инженеров Железнодорожного Транспорта Им.Акад.В.Н.Образцова | Butt joint of pile sections |
| JP2003239698A (en) * | 2002-02-14 | 2003-08-27 | Sasaki Giken:Kk | Resin bolt |
| CN103556624A (en) * | 2013-11-01 | 2014-02-05 | 建华建材（中国）投资有限公司 | Connecting sleeve, prefabricated part comprising same as well as production method and connecting method thereof |
| CN103866761A (en) * | 2014-03-21 | 2014-06-18 | 李全民 | Mechanical connection pile head using repetitively used precast concrete pile as end plate and manufacturing method of mechanical connection pile head |
| CN204825861U (en) * | 2015-06-09 | 2015-12-02 | 周兆弟 | Stretch -draw fastener |
-
2015
- 2015-06-09 CN CN201510311803.3A patent/CN104988906B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1219728A1 (en) * | 1983-07-08 | 1986-03-23 | Ленинградский Ордена Ленина Институт Инженеров Железнодорожного Транспорта Им.Акад.В.Н.Образцова | Butt joint of pile sections |
| JP2003239698A (en) * | 2002-02-14 | 2003-08-27 | Sasaki Giken:Kk | Resin bolt |
| CN103556624A (en) * | 2013-11-01 | 2014-02-05 | 建华建材（中国）投资有限公司 | Connecting sleeve, prefabricated part comprising same as well as production method and connecting method thereof |
| CN103866761A (en) * | 2014-03-21 | 2014-06-18 | 李全民 | Mechanical connection pile head using repetitively used precast concrete pile as end plate and manufacturing method of mechanical connection pile head |
| CN204825861U (en) * | 2015-06-09 | 2015-12-02 | 周兆弟 | Stretch -draw fastener |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113303621A (en) * | 2021-07-07 | 2021-08-27 | 海宁智盛自动化设备有限公司 | Pull buckle component for sofa and assembling method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104988906B (en) | 2017-08-01 |
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Effective date of registration: 20170714 Address after: 215600 port town, Zhangjiagang, Jiangsu, China, Suzhou Patentee after: Jiangsu Tianhai building materials Co., Ltd. Address before: Kaohsiung streets Pu Beilun District 315800 in Zhejiang province Ningbo City No. 18 Patentee before: Zhou Zhaodi |