CN105508367A - Limiting bolt and installation method - Google Patents
Limiting bolt and installation method Download PDFInfo
- Publication number
- CN105508367A CN105508367A CN201610032165.6A CN201610032165A CN105508367A CN 105508367 A CN105508367 A CN 105508367A CN 201610032165 A CN201610032165 A CN 201610032165A CN 105508367 A CN105508367 A CN 105508367A
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- China
- Prior art keywords
- expansion
- bolt
- sleeve
- spacing
- lobe
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
- F16B13/063—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention provides a limiting bolt which comprises a sleeve and an expansion pin preinstalled into the sleeve. The sleeve is provided with an anti-breakthrough limiting part matched with the expansion pin. The anti-breakthrough limiting part is an inward-protruding portion located at the tail end of an expansion section. The side face of a forward-protruding portion and the side face of the top end of the anti-breakthrough limiting part form anti-disengagement limiting fit. The invention further provides an installation method of the limiting bolt. According to the limiting bolt, anti-breakthrough limiting, installation depth limiting and anti-disengagement limiting are achieved in the simple structure, and the problems that an installation base body is likely to be broken through and the connection strength is poor during installation can be solved at the same time through three-dimensional three-position limiting protection; in addition, by means of the structure, the limiting bolt is convenient to install, easy to manufacture, high in strength and low in cost.
Description
Technical field
The present invention relates to a kind of limited bolt, be applicable to all kinds of building furred ceiling, Guan Dao Diao Gu, hang the connection such as support, curtain wall and door and window, control box, bathroom, especially floor is hung and thin wall is constructed effectively to prevent from knocking and causes adjacent room to damage.The invention still further relates to a kind of installation method of bolt.
Background technique
Furred ceiling on existing floor, hanging support, swing pipe road, air-conditioning to connect, adopting EXPANSION ANCHOR BOLTS to install with general conversion adapter and being connected, or using internal thread expansion tube.But the chronic fatigue caused due to the structural principle of hole wall astragal load expanded loosens, the furred ceiling after installation, hang support, swing pipe road, air-conditioning fall down and happen occasionally.
Usually, expansion tube mostly is and adopts welded tube manufacture, and intensity is lower, so more EXPANSION ANCHOR BOLTS expands pipe draw bad surrender.In addition, along with the impact of grabbing tighter and tighter on the duration with building industry of soaring of China's labour cost, China is entering machine comprehensively and is replacing the artificial epoch, and existing internal thread expansion tube, not only complex manufacturing, and prepackage and mounting process more complicated, time-consuming, cannot Auto-mounting be used.And country is in the use of concrete anchor, defines expansion crab-bolt and can not be used for reversal of the natural order of things, metope, lifeline engineering, can only level ground be used for.
For addressing these problems, occurred that one struts anchor, this struts in anchor thicker owing to expanding lobe, for making expansion lobe distending, needing the mounting type with knocking expanding piece, when firmly knocking, probably floor and toilet Bao Qiang being struck logical.At present, solve by the mode adding outer ring and struck logical, but so prominently cannot fill flat outside, can only being confined to without the need to filling flat suspension rod, expanding lobe in addition thicker, even if Bian dilation technique at the bottom of hole, also can cause bending long, cause larger displacement amount; And this struts anchor is that solution struts element and is easy to drop out, can only screw on by screw rod by Bian when dispatching from the factory, used time back-outs and refills, but the problem such as still to drop out during the upside-down mounting of floor ceiling, and by milling inside groove, double thread deburring, increase bottom fastener, its complex process cost is high, and also easily drops out in transport vibrations.Owing to being expansion lobe load, and drilling depth is uncontrollable, struts element to strike dark or too shallow, capital causes that expansion lobe is closed cannot the problem such as load, knocking uncontrollable whether putting in place for solving it, adopting the installation control unit of the more complicated observation depth at present, but be difficult to control.
Summary of the invention
First object of the present invention is to provide a kind of limited bolt, easily punctures the problem of installing matrix and join strength when it can solve installation simultaneously.For this reason, invention is by the following technical solutions:
A kind of limited bolt, comprise sleeve, the lower end of sleeve arranges expansion lobe, it is characterized in that described limited bolt also comprises the expansion pin be pre-loaded in sleeve, described sleeve is provided with coordinate with expansion pin anti-breakdown spacing, described anti-breakdown spacing for be in expansion lobe end to inner bulge, the head of described expansion pin is provided with the step protruded forward, the bottom stage face of the described step protruded forward coordinates with described anti-breakdown spacing formation is spacing, and after the expansion of expansion lobe, it is described between inner bulge that the bump forward of the described step protruded forward enters each expansion lobe, the side of described bump forward and anti-breakdown spacing side, top form the spacing cooperation of Anti-extrusion.
Further, described expansion pin arranges prepackage drive mechanism; The endoporus of described sleeve arranges internal thread near aperture up to the position close to expansion lobe, arranges the transition type introducing port of protection internal thread in described endoporus upper end; The side of described expansion pin is provided with the prepackage salient point that can coordinate with described inner hole thread, expansion pin can be screwed in and be preloaded onto lower cartridge, the screw thread on hub internal bore top by complete be preserved for connecting link with install need install article, and sleeve causes seamless body by cold-heading manufacture upsetting, only need to expansion lobe place grooving and tapping thread, its compact structure intensity is high, simple exquisite inexpensive.
Further, the described sleeve top setting depth that is provided with and installs base mate is spacing.
Further, the outer surface of described expansion lobe arranges spline load line.
Further, the outer surface of described sleeve is provided with a circle easily opens groove at the root of expansion lobe.
Further, described anti-breakdown spacing side, top is in the rounding conical surface before expansion lobe is not expanded, and the side of described bump is forward cylndrical surface.
Further, the present invention adopts snap formula bolt to carry out as with the screw thread on hub internal bore top the link that is threaded.
Further, described snap formula bolt is configured with compression spring, the bottom surface of bolt head arranges groove, compression spring arranges Elastic Teeth, and the groove on described Elastic Teeth and bolt head bottom surface is pawl engagement, only allow a bolt to rotate towards tightening direction, and Elastic Teeth also have part to expose periphery at bolt head, Elastic Teeth can be out of shape because of its exposed portion pressurized, remove and engage with the pawl of bolt head.
Further, the inner hole wall of described compression spring has the rotation prevention structure of bending downwards.
Second object of the present invention is to provide a kind of installation method that can adopt the bolt of above-mentioned limited bolt, for this reason, the present invention by the following technical solutions:
An installation method for bolt, is characterized in that it adopts above-mentioned limited bolt;
Before the mounting, the matrix that need install is got and cuts bottom outlet, described in cut bottom outlet aperture there is limited step, the height of limited step comparatively exceeds the top 1-2mm of sleeve;
When mounted, first described limited bolt being put into and cut bottom outlet, making the spacing aperture limited step with cutting bottom outlet of setting depth form spacing cooperation; Then, adopt front end with push rod, push rod rear arranges the installation machinery of the screw rod be threaded with the internal thread of hub internal bore, employing spiral way advances, push expansion pin by push rod to push ahead, the bottom stage face of the step protruded forward until described coordinates with described anti-breakdown spacing formation is spacing, now, expansion lobe by expansion enter the bottom side cutting bottom outlet recessed in, complete installation.
Owing to adopting technological scheme of the present invention, limited bolt provided by the present invention in simple structure in achieve anti-breakdown spacing, setting depth is spacing, Anti-extrusion is spacing, by this three-dimensional three limit protections, easily puncture the problem of installing matrix and join strength when can solve installation, and structure installment of the present invention conveniently, easily manufactures, intensity is high, cost is low simultaneously.
Accompanying drawing explanation
Fig. 1 is the plan view of middle sleeve of the present invention.
Fig. 2 is the sectional view expanding lobe place in Fig. 1.
Fig. 3 is the sectional view of middle sleeve of the present invention.
Fig. 4 is the plan view of Fig. 1.
Fig. 5 is the prepackage schematic diagram of expansion pin of the present invention and sleeve.
Fig. 6 is the schematic diagram of expansion pin.
Fig. 7 is the plan view of expansion pin.
Fig. 8 is that the present invention is installed to the sectional view after in installation matrix.
Fig. 9 is installation process schematic diagram of the present invention.
Figure 10 is snap formula screw rod exploded view.
Figure 11 is the stereogram of the compression spring in Figure 10.
Figure 12 is the schematic diagram that another kind states compression spring.
Figure 13 is the plan view of Figure 10.
Embodiment
With reference to accompanying drawing.Limited bolt provided by the present invention, comprise sleeve 1, the lower end of sleeve arranges expansion lobe 2, and described limited bolt also comprises the expansion pin 3 be pre-loaded in sleeve, described expansion pin is provided with pre-assembling structure, is provided with the structure with described prepackage respective outer side edges in the endoporus 10 of described sleeve 1.
Described sleeve 1 be provided with coordinate with described expansion pin 3 anti-breakdown spacing 4 and and the setting depth spacing 5 that matrix 100 coordinates is installed, installation matrix 100 is main bodys that limited bolt depends on, such as wallboard or ceiling board.
Setting depth spacing 5 can be in one of sleeve upper end to enclose outwardly step.
Described anti-breakdown spacing 4 for be in expansion lobe 2 end to inner bulge, the head of described expansion pin 3 is provided with the step protruded forward, the bottom stage face 31 of described step coordinates with described anti-breakdown spacing 4, make expansion pin 3 travel forward touch expansion lobe 2 inclined-plane after, when continuing expansion expansion lobe 2 moving forward, when bottom stage face 31 encounter anti-breakdown spacing after, expansion pin 3 cannot continue forward again and become overall with sleeve 1, 1, sleeve cuts coordinating of the aperture limited step 102 of bottom outlet 101 by the described dress degree of depth spacing 5 and the mounting limit bolt installed on matrix, and motion can not be continued to depth direction.
The bump forward 32 of the described step protruded forward enter each expansion lobe 2 between inner bulge (also namely anti-breakdown spacing 4) 40, described bump forward 32 and form the spacing cooperation of Anti-extrusion to the side, top 41 of inner bulge, prevent expansion lobe 2 from inwardly shrinking, further, described anti-breakdown spacing side, top 41 is rounding conical surface (see figure 3) before expansion lobe 2 is not expanded, the side 320 of described bump forward 32 is in cylndrical surface, what expansion pin 3 was born at the maximum arm of force place of the reaction force bearing expansion lobe 2 is vertical pressure, prevent 21 pairs, the expansion lobe inclined-plane expansion pin 3 contributing to expanding lobe expansion when limited bolt is installed and produce crowding-out effect.
Described expansion pin arranges prepackage drive mechanism 34, and the endoporus 10 of described sleeve 1 arranges internal thread 11 near aperture up to the position close to expansion lobe 2.The transition type introducing port 12 of protection internal thread is set in described endoporus 10 upper end, this introducing port 12 conically and do not arrange screw thread, its objective is because limited bolt lacks guiding when mounted, limited bolt be driven into by Hammer head cut bottom outlet 101 time, internal thread is easy to destroy, cause follow-up article that difficulty is installed, therefore, the present invention utilizes cold-heading fabrication technique, when extruding formation anti-breakdown spacing 4, utilize and form introducing port 12 with secondary mould with procedure, by cold-heading fabrication technique, material hardening is strengthened simultaneously, like this, when adopting Hammer head to knock sleeve, even if be not easy distortion and have a small amount of distortion, also aperture and the internal thread 11 of endoporus 10 can not be affected, thus solve internal thread destroy and article difficulty install problem.
The side of described expansion pin 3 is provided with the prepackage salient point 33 that can coordinate with described internal thread 11, make expansion pin 3 can rely on described prepackage drive mechanism and screw in be preloaded onto sleeve 1 bottom, make expansion pin 3 can be preloaded onto on sleeve 1 and form finished product, expansion pin 3 is made to be unlikely to when different amount are installed to drop out, when expansion pin 3 advances expansion expansion lobe 2, this prepackage salient point 33 automatically falls down or is out of shape or destroys lower internal thread, do not affect the installation of limited bolt, and the internal thread on hub internal bore 10 top is connected link to install article by complete being preserved for, described prepackage drive mechanism can be interior hexagonal, outer-hexagonal, one word, cross, and other structure of input torsion can be made, make expansion pin 3 also make by cold-heading like this to form.
In the present invention, sleeve is formed along mould configuration (see Fig. 3 and Fig. 4), manufactures upsetting cause seamless body by cold-heading, only need to expansion lobe 3 place grooving 6 and tapping thread, and its compact structure intensity is high, simple exquisite inexpensive.
The outer surface of described sleeve 1 is provided with a circle at the root of expansion lobe and easily opens groove 13, namely guarantees load intensity, by easily opening groove 13, expansion lobe can easily be strutted again.
The outer surface of described expansion lobe arranges spline load line 14, to increase concrete and expansion member friction ractor, make anchor pole, in the internal thread of endoporus that screw mandrel is installed on sleeve time, be unlikely rotation.
The present invention can adopt snap formula bolt 6 to carry out as with the screw thread on hub internal bore top the link that is threaded.
Described snap formula bolt 6 is configured with compression spring 7, the bottom surface of bolt head 61 is arranged groove 62, compression spring 7 is arranged Elastic Teeth 71, and the groove 62 on described Elastic Teeth 71 and bolt head bottom surface is pawl engagement, bolt is only allowed to rotate towards tightening direction, and Elastic Teeth 71 also has part to expose in the periphery of bolt head 61, makes Elastic Teeth 71 can be out of shape because of its exposed portion pressurized, removes and engages with the pawl of bolt head.The inner hole wall of described compression spring has the rotation prevention structure 72 of bending downwards.Rotation prevention structure 72 can coordinate with sleeve lining, and sleeve lining arranges corresponding groove, thus forms integrated type anti-rotation loosening configuration.
Described compression spring can adopt stamping part, forms its profile, Elastic Teeth and described rotation prevention structure in punching press.
Groove 62 on bolt head bottom surface forms link spring shape at bolt head outer side bottom surface, in order to guarantee compression spring is arranged, Elastic Teeth crooked position is not compacted and elastic force is lasting, described snap formula bolt is configured with load male member 63, load male member 63 pads the below at bolt head 61, load male member 63 exceeds the groove face of groove 62, so when installing connection, ensure that the bending root of Elastic Teeth 71 is not compacted, make the Elastic Teeth 71 of compression spring 7 reliably can either carry out pawl with the groove 62 of bolt head 61 to engage, bolt head 61 tightening direction can not be obstructed when rotating, otherwise then can not rotate, and when disassembly is desired, telescopic tool cover is pressed down in bolt head 61 extroversion, Elastic Teeth 71 can evenly be flattened and all solutions removes pawl engagement, can carry out unscrewing operation.The inner side of compression spring is plane round 73, and outside is described Elastic Teeth, and load male member 63 can pad on plane round 73.
Described bolt and load male member 63 are integrated, and also can be split.
The installation method of above-mentioned limited bolt is as follows:
Before the mounting, the matrix 100 that need install is got and cuts bottom outlet 101, described in cut bottom outlet aperture there is limited step 102, the height of limited step 102 comparatively exceeds the top 1-2mm of sleeve;
When mounted, first described limited bolt is put into and cut bottom outlet 101, make setting depth spacing 5 form spacing cooperation with the aperture limited step 102 cutting bottom outlet; Then, adopt front end with push rod 201, push rod 201 rear arranges the installation machinery 200 of the screw rod 202 be threaded with the internal thread 11 of hub internal bore, employing spiral way advances, push expansion pin 3 by push rod 201 to push ahead, the bottom stage face 31 of the step protruded forward until described forms spacing cooperation with described anti-breakdown spacing 4, now, expansion lobe 3 is entered in the bottom side cutting bottom outlet recessed 103 by expansion, completes installation.
The present invention supports power formula erection unit 200 by above-mentioned band screw rod and the mutual of push rod, expansion pin is advanced by rotating screw thread, can automatically screw out after completing, all all complete within the several seconds, very convenient, installation matrix can not be punctured, and the protrusion defective mounting that outside displacement amount causes can be eliminated when mounted.
The foregoing is only specific embodiments of the invention, but structure characteristic of the present invention is not limited thereto, any those skilled in the art is in the field of the invention, and the change done or modification are all encompassed among protection scope of the present invention.
Claims (10)
1. a limited bolt, comprise sleeve, the lower end of sleeve arranges expansion lobe, it is characterized in that described limited bolt also comprises the expansion pin be pre-loaded in sleeve, described sleeve is provided with coordinate with expansion pin anti-breakdown spacing, described anti-breakdown spacing for be in expansion lobe end to inner bulge, the head of described expansion pin is provided with the step protruded forward, the bottom stage face of the described step protruded forward coordinates with described anti-breakdown spacing formation is spacing, and after the expansion of expansion lobe, it is described between inner bulge that the bump forward of the described step protruded forward enters each expansion lobe, the side of described bump forward and anti-breakdown spacing side, top form the spacing cooperation of Anti-extrusion.
2. a kind of limited bolt as claimed in claim 1, is characterized in that described expansion pin arranges prepackage drive mechanism; The endoporus of described sleeve arranges internal thread near aperture up to the position close to expansion lobe, arranges the transition type introducing port of protection internal thread in described endoporus upper end; The side of described expansion pin is provided with the prepackage salient point that can coordinate with described inner hole thread, expansion pin can be screwed in and be preloaded onto lower cartridge, the screw thread on hub internal bore top by complete be preserved for connecting link with install need install article, and sleeve causes seamless body by cold-heading manufacture upsetting, only need to expansion lobe place grooving and tapping thread, its compact structure intensity is high, simple exquisite inexpensive.
3. a kind of limited bolt as claimed in claim 1, is characterized in that the outer surface of described expansion lobe arranges spline load line.
4. a kind of limited bolt as claimed in claim 1, is characterized in that the setting depth that described sleeve top was provided with and installed base mate is spacing.
5. a kind of limited bolt as claimed in claim 1, is characterized in that the outer surface of described sleeve is provided with a circle at the root of expansion lobe and easily opens groove.
6. a kind of limited bolt as claimed in claim 1, it is characterized in that described anti-breakdown spacing side, top in the rounding conical surface before expansion lobe is not expanded, the side of described bump is forward cylndrical surface.
7. a kind of limited bolt as claimed in claim 2, is characterized in that its adopts snap formula bolt to carry out as with the screw thread on hub internal bore top the link that is threaded.
8. a kind of limited bolt as claimed in claim 7, it is characterized in that described snap formula bolt is configured with compression spring, the bottom surface of bolt head arranges groove, compression spring arranges Elastic Teeth, and the groove on described Elastic Teeth and bolt head bottom surface is pawl engagement, only allow a bolt to rotate towards tightening direction, and Elastic Teeth also have part to expose periphery at bolt head, Elastic Teeth can be out of shape because of its exposed portion pressurized, remove and engage with the pawl of bolt head.
9. a kind of limited bolt as claimed in claim 7, is characterized in that the inner hole wall of described compression spring has the rotation prevention structure of bending downwards.
10. an installation method for bolt, is characterized in that it adopts limited bolt described in claim 2;
Before the mounting, the matrix that need install is got and cuts bottom outlet, described in cut bottom outlet aperture there is limited step, the height of limited step comparatively exceeds the top 1-2mm of sleeve;
When mounted, first described limited bolt being put into and cut bottom outlet, making the spacing aperture limited step with cutting bottom outlet of setting depth form spacing cooperation; Then, adopt front end with push rod, push rod rear arranges the installation machinery of the screw rod be threaded with the internal thread of hub internal bore, employing spiral way advances, push expansion pin by push rod to push ahead, the bottom stage face of the step protruded forward until described coordinates with described anti-breakdown spacing formation is spacing, now, expansion lobe by expansion enter the bottom side cutting bottom outlet recessed in, complete installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610032165.6A CN105508367A (en) | 2016-01-18 | 2016-01-18 | Limiting bolt and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610032165.6A CN105508367A (en) | 2016-01-18 | 2016-01-18 | Limiting bolt and installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105508367A true CN105508367A (en) | 2016-04-20 |
Family
ID=55716589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610032165.6A Pending CN105508367A (en) | 2016-01-18 | 2016-01-18 | Limiting bolt and installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105508367A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763049A (en) * | 2016-12-31 | 2017-05-31 | 中国工程物理研究院激光聚变研究中心 | Push away swollen drawing type flexible fastening connector |
| CN110273360A (en) * | 2019-06-15 | 2019-09-24 | 江阴法尔胜住电新材料有限公司 | A kind of self-locking prestress anchorage system and construction method |
| TWI710715B (en) * | 2019-04-23 | 2020-11-21 | 世德工業股份有限公司 | Method for manufacturing assembled casing screw and assembled casing screw manufactured by the same |
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| US20040136802A1 (en) * | 2003-01-09 | 2004-07-15 | Yen-Tseng Lin | Expansion bolt |
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| EP1982818A1 (en) * | 2007-04-21 | 2008-10-22 | Häfele Berlin GmbH & Co KG | Method for producing a plastic collar |
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| US20130333196A1 (en) * | 2010-06-10 | 2013-12-19 | Black & Decker Inc. | Drop-in anchor |
| CN105003519A (en) * | 2015-08-04 | 2015-10-28 | 申书达 | Detachable looseness-preventing bolt or screw assembly |
| CN205977949U (en) * | 2016-01-18 | 2017-02-22 | 杭州斯泰新材料技术有限公司 | Spacing bolt |
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2016
- 2016-01-18 CN CN201610032165.6A patent/CN105508367A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1133948A (en) * | 1995-03-13 | 1996-10-23 | 株式会社游间工房 | Anchor unit with expansive anchor member expanded by utilizing turning force of bolt |
| TW329863U (en) * | 1997-07-09 | 1998-04-11 | Yu-Mei Liao | Disassembled type reusable telescopic stud nail structure |
| TW390394U (en) * | 1998-01-21 | 2000-05-11 | Lin Yan Tzeng | A gecko nail |
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| CN2771545Y (en) * | 2004-08-02 | 2006-04-12 | 马庆友 | Hardware piece having expansion end |
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| CN103206442A (en) * | 2012-01-17 | 2013-07-17 | 林崇兴 | Fastening bolt and fastening screw tube thereof |
| CN105003519A (en) * | 2015-08-04 | 2015-10-28 | 申书达 | Detachable looseness-preventing bolt or screw assembly |
| CN205977949U (en) * | 2016-01-18 | 2017-02-22 | 杭州斯泰新材料技术有限公司 | Spacing bolt |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763049A (en) * | 2016-12-31 | 2017-05-31 | 中国工程物理研究院激光聚变研究中心 | Push away swollen drawing type flexible fastening connector |
| TWI710715B (en) * | 2019-04-23 | 2020-11-21 | 世德工業股份有限公司 | Method for manufacturing assembled casing screw and assembled casing screw manufactured by the same |
| CN110273360A (en) * | 2019-06-15 | 2019-09-24 | 江阴法尔胜住电新材料有限公司 | A kind of self-locking prestress anchorage system and construction method |
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Application publication date: 20160420 |
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