CN108457964B - Detachable single-side bolt and using method thereof - Google Patents
Detachable single-side bolt and using method thereof Download PDFInfo
- Publication number
- CN108457964B CN108457964B CN201810263290.7A CN201810263290A CN108457964B CN 108457964 B CN108457964 B CN 108457964B CN 201810263290 A CN201810263290 A CN 201810263290A CN 108457964 B CN108457964 B CN 108457964B
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- screw rod
- tail baffle
- sleeve
- rotating
- screw
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000000903 blocking effect Effects 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/06—Specially-shaped heads
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hinges (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a detachable unilateral bolt and a use method thereof, wherein the detachable unilateral bolt comprises a hollow sleeve, a screw rod coaxially sleeved in the sleeve and a tail baffle arranged at the bottom of the screw rod, and the outer diameters of the sleeve and the tail baffle are equal; the screw rod is uniformly provided with rotating blades at the lower end extending out of the sleeve along the circumferential direction, and the rotating blades are arranged on the screw rod through hinges; the tail baffle is provided with inner ring threads, a plurality of cylindrical blocking bodies are distributed on the upper end face of the tail baffle, threads are arranged at the bottom end of the screw rod and screwed into the tail baffle, meanwhile, the cylindrical blocking bodies are abutted against two sides of each rotating blade, and a groove for the cylindrical blocking bodies to enter is correspondingly formed in the bottom surface of the sleeve; and in the process that the screw is completely screwed into the tail baffle, the edge of each rotating blade extends out of the periphery of the tail baffle. According to the invention, the screw rod is rotated to drive the rotating blade, the cylindrical blocking body is utilized to limit the blade, the rotating blade is opened during installation to increase the overall outer diameter of the bolt, the nut is matched and clamped in the hole of the installation structure, and the rotating blade is fastened through the friction force between the rotating blade and the structure.
Description
Technical Field
The invention relates to a bolt, in particular to a unilateral bolt and a use method thereof.
Background
The bolt is used as a connecting member, generally composed of a screw rod, a nut and a washer, has the advantages of convenience in installation, low cost, high strength and the like, and is widely applied to construction site installation. For a common bolt, a hole slightly larger than the diameter of a screw rod needs to be drilled on the structure in advance during operation, the screw rod penetrates through the hole from one side, a gasket and a nut are installed on the other side, and finally the screw rod is screwed. At present, unilateral bolts with different forms and specifications, such as expansion bolts, core-through bolts and the like, are available in the market, and the load born by the unilateral bolts is lower compared with the load born by common double-faced bolts, so that the unilateral bolts can only be applied to certain projects with lower safety level and low load requirement. For the core-through bolt, the core-through bolt has certain requirements on installation accuracy, and the field installation difficulty is higher. Moreover, most unilateral bolts are deformed in one direction and cannot be disassembled, so that high requirements are provided for engineering construction personnel, and the whole construction is greatly influenced if the unilateral bolts are installed wrongly.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a detachable unilateral bolt and a using method thereof, aiming at the defects of the prior art, and the detachable unilateral bolt is simple in structure, convenient to install and reusable.
The technical scheme is as follows: the invention provides a detachable unilateral bolt which comprises a hollow sleeve, a screw rod coaxially sleeved in the sleeve and a tail baffle arranged at the bottom of the screw rod, wherein the outer diameters of the sleeve and the tail baffle are equal;
the screw rod is uniformly provided with rotating blades at the lower end extending out of the sleeve along the circumferential direction, and the rotating blades are arranged on the screw rod through hinges; the tail baffle is provided with inner ring threads, a plurality of cylindrical blocking bodies are distributed on the upper end face of the tail baffle, threads are arranged at the bottom end of the screw rod and screwed into the tail baffle, meanwhile, the cylindrical blocking bodies are abutted against two sides of each rotating blade, and a groove for the cylindrical blocking bodies to enter is correspondingly formed in the bottom surface of the sleeve;
and in the process that the screw is completely screwed into the tail baffle, the edge of each rotating blade extends out of the periphery of the tail baffle.
Furthermore, the upper end of the screw rod extending out of the sleeve is provided with a through hole for the rotating rod to pass through in the radial direction, and the rotating rod drives the screw rod to rotate.
Further, telescopic inner wall is equipped with the root and has the arch of spring in the different height departments, and the periphery of screw rod has the ring groove with protruding looks adaptation, and the coating has anti-skidding coating in the draw-in groove.
Further, the cross section of the rotary blade is composed of two sides with different lengths from the hinge and an arc connecting the two sides, and the arc of each rotary blade is overlapped with the edge of the sleeve when not in use.
Further, the rotating blades are arranged one at every 60 ° around the screw, for a total of 6.
Further, the periphery of the sleeve is fully distributed with threads, and the sleeve is fastened with a gasket and a nut which are matched through the threads on the periphery.
Further, the tail baffle is provided with a rubber ring at the bottom of the inner ring thread.
A use method of a detachable single-side bolt comprises the following steps:
(1) the screw rod is sleeved in the sleeve, the bottom part of the screw rod is screwed into the tail baffle, each rotating blade is fixed in the cylindrical blocking bodies on the two sides, the rotating blades are contracted in the edge of the tail baffle, the bolt integrally penetrates through the hole of the structural body to be installed, and the rotating blades and the tail baffle penetrate through the hole;
(2) rotating the screw rod to make the outer edge of the rotating blade extend out of the edge of the tail baffle and abut against the bottom surface of the structure body;
(3) a washer and a nut are arranged on the sleeve to abut against the top surface of the structure body, and relative pretightening force is generated between the nut and the rotating blade to integrally fix the bolt in the hole of the structure body;
(4) and continuing to rotate the screw until the screw is locked with the tail baffle plate.
Further, the rotation direction of the screw in the step (2) is rotated from the short side to the long side of the rotary blade.
And (4) further, when the screw rotates to contact the rubber ring in the tail baffle, the screw is extruded and locked.
Has the advantages that: according to the invention, the screw rod is rotated to drive the rotating blade, the cylindrical blocking body is utilized to limit the blade, the rotating blade is opened during installation to increase the overall outer diameter of the bolt, the nut is matched and clamped in the hole of the installation structure, and the rotating blade is fastened through the friction force between the rotating blade and the structure, so that the bearing capacity is better; when the bolt needs to be disassembled, the rotating blade can be reset by reversely rotating the screw rod, and the bolt is pulled out; simple structure does not need extra installation device, and convenient operation has alleviateed the requirement to constructor, can realize unilateral bolt-up operation, and in some special cases, if the installation is wrong, still can uninstall the bolt as required, on the basis that does not harm the structure, reaches the detachable purpose.
Drawings
FIG. 1 is a schematic view of the construction of the bolt of the present invention;
FIG. 2 is a sectional view of the rotating blade in an initial state;
FIG. 3 is a sectional view of a rotating blade in use;
FIG. 4 is a schematic structural view of a tail gate;
FIG. 5 is a cross-sectional view of the sleeve;
FIG. 6 is a schematic structural view of a screw;
fig. 7 is an overall schematic view of the bolt installed in the structure.
Detailed Description
The technical solution of the present invention is described in detail below, but the scope of the present invention is not limited to the embodiments.
A detachable single-side bolt is shown in figure 1 and comprises a sleeve 3, a screw rod 1, a tail baffle 7, a rotary rod 8, a washer 9 and a nut 10.
The sleeve 3 is hollow, and the periphery of the sleeve 3 is fully distributed with threads and is matched with the washer 9 and the nut 10. The screw 1 is coaxially passed through the sleeve 3 and protrudes from the top and bottom ends, the screw 1 being provided with an external thread 16 only at the bottom end protruding portion. The upper end of the screw rod 1 extending out of the sleeve 3 is provided with a through hole 2 for a rotary rod 8 to pass through, and the rotary rod 8 is rotated to drive the screw rod 1 to rotate by taking the axis as the center.
The bottom surface of the sleeve 3 is correspondingly provided with a groove 12 for the cylindrical blocking body 5 to enter, and the cylindrical blocking body 5 enters the groove 12 in the process that the screw 1 is screwed into the tail baffle 7. The tail baffle 7 is provided with a rubber ring at the bottom of the central concave part, the screw rod 1 is completely screwed into the tail baffle 7 and is extruded after contacting the rubber ring, and the screw rod 1 and the tail baffle 7 are locked.
As shown in fig. 5, the inner wall of the sleeve 3 is provided with three arc-shaped protrusions 14 with springs 13 at the root parts at different heights, as shown in fig. 6, the outer periphery of the screw 1 is provided with an annular clamping groove 15 matched with the arc-shaped protrusions 14, and an anti-skid coating is coated in the clamping groove 15. When the screw rod 1 rotates, the protrusion 14 can slide in the annular clamping groove 15, the cylindrical blocking body 5 of the tail baffle 7 enters the groove 12 in the bottom surface of the sleeve 3, the sleeve 3 and the tail baffle 7 are relatively static, the protrusion 14 can enable the screw rod 1 to rotate in the sleeve 3 under the condition of overcoming friction, the friction between the sleeve 3 and the protrusion 14 is made by the anti-skid coating, and the screw rod 1 is prevented from rotating unexpectedly due to external factors (weather and biology) after being installed, so that the device is unreliable.
The working process of the detachable unilateral bolt is specifically operated as follows:
(1) in an initial state, the screw rod 1 is sleeved in the sleeve 3, the bottom of the screw rod 1 is screwed into one part of the tail baffle 7, each rotating blade 6 is clamped between the cylindrical blocking bodies 5, the rotating blades 6 are in a contraction state, the overall outer diameters of the bolts are the same, the single-side bolts integrally penetrate through the mounting holes of the structure body 18, and the rotating blades 6 and the tail baffle 7 penetrate through the mounting holes;
(2) the screw rod 8 is used for rotating through the through hole 2 of the screw rod 1, and the rotating direction is rotated by the short side to the long side of the rotating blade 6, namely clockwise in the case of figures 2 and 3;
(3) the rotation of the screw 1 makes the rotating blades 6 move with the hinge 11 as a rotation point, because both sides are restricted by the cylindrical blocking body 5, the outer end of each rotating blade 6 extends out of the edge of the tail baffle 3, and the whole body presents a trend of outward opening, each rotating blade 6 protrudes outwards by an area, so that the rotating blade 6 can abut against the right side surface of the structure 18 after being opened in fig. 7;
(4) the part of the sleeve 3, which is exposed out of the hole (namely the left side of the structural body 18 in the figure 7), is sleeved with a matched washer 9, a hexagonal nut 10 is screwed, and the opened rotating blade 6 and the nut 10 generate pre-tightening force to further stabilize the bolt; in addition, the tail baffle 7 of the screw 1 can also provide a supporting effect for the rotating blade 6, as the rotating blade 6 cannot be completely screwed out, and a part of the rotating blade 6 is arranged between the tail baffle and the structural body 18, in the installation process, along with the continuous screwing of the nut 10, the nut 10 and the rotating blade 6 can continuously press the structural body 18, and pretightening force is generated through friction, which means that a large extrusion force exists between the blade and the structural body 18, the direction of the force is vertical to the plane of the structural body 18, the hinge 11 can only provide the restraint in the plane, the balance force of the extrusion force can only be provided by the tail baffle 7, the tail baffle 7 is arranged at the rear part of the rotating blade 6, and the extrusion force of the structural body 18 to the rotating blade 6 can be balanced by supporting the rest part of the rotating blade 6, so that the stability is enhanced, and the longitudinal rotation of, the structural stability is enhanced;
(5) when the bottom of the screw rod 1 rotates to the rubber ring contacting the tail baffle 7, the screw rod 1 is extruded and locked, and the screw rod 1 is prevented from rotating accidentally in the bolt using process, so that structural failure is caused.
If the bolt needs to be removed, the nut 10 washer 9 is firstly removed, then the sleeve 3 and the tail baffle 7 are kept still, the rotating rod 8 is inserted into the through hole 2 of the screw rod 1, the rotating rod rotates in the direction opposite to the mounting direction, the rotating blades 6 are retracted, the whole diameter of the bolt is restored to be the same, and the screw rod 1 is taken out, namely the removal is finished.
Claims (9)
1. The utility model provides a detachable unilateral bolt which characterized in that: the screw rod is coaxially sleeved in the sleeve, and the tail baffle is arranged at the bottom of the screw rod;
the screw rod is uniformly provided with rotating blades at the lower end extending out of the sleeve along the circumferential direction, and the rotating blades are arranged on the screw rod through hinges; the tail baffle is provided with inner ring threads, a plurality of cylindrical blocking bodies are distributed on the upper end face of the tail baffle, threads are arranged at the bottom end of the screw rod and screwed into the tail baffle, meanwhile, the cylindrical blocking bodies are abutted against two sides of each rotating blade, and a groove for the cylindrical blocking bodies to enter is correspondingly formed in the bottom surface of the sleeve; the inner wall of the sleeve is provided with bulges with springs at the root parts at different heights, the periphery of the screw is provided with an annular clamping groove matched with the bulges, and an anti-skid coating is coated in the clamping groove;
and in the process that the screw is completely screwed into the tail baffle, the edge of each rotating blade extends out of the periphery of the tail baffle.
2. The detachable single-sided bolt according to claim 1, wherein: the upper end of the screw rod extending out of the sleeve is provided with a through hole for the rotating rod to pass through, and the rotating rod drives the screw rod to rotate.
3. The detachable single-sided bolt according to claim 1, wherein: the cross section of the rotating blade is composed of two unequal-length edges starting from the hinge and an arc connecting the two edges, and the arc of each rotating blade is superposed with the edge of the sleeve when not in use.
4. The detachable single-sided bolt according to claim 1 or 3, wherein: the rotating blades were arranged one at every 60 ° around the screw for a total of 6.
5. The detachable single-sided bolt according to claim 1, wherein: the periphery of the sleeve is fully distributed with threads, and the sleeve is fastened with a gasket and a nut which are matched through the threads on the periphery.
6. The detachable single-sided bolt according to claim 1, wherein: the tail baffle is provided with a rubber ring at the bottom of the inner ring thread.
7. The use method of the detachable single-side bolt according to claim 1, characterized in that: the method comprises the following steps:
(1) the screw rod is sleeved in the sleeve, the bottom part of the screw rod is screwed into the tail baffle, each rotating blade is fixed in the cylindrical blocking bodies on the two sides, the rotating blades are contracted in the edge of the tail baffle, the bolt integrally penetrates through the hole of the structural body to be installed, and the rotating blades and the tail baffle penetrate through the hole;
(2) rotating the screw rod to make the outer edge of the rotating blade extend out of the edge of the tail baffle and abut against the bottom surface of the structure body;
(3) a washer and a nut are arranged on the sleeve to abut against the top surface of the structure body, and relative pretightening force is generated between the nut and the rotating blade to integrally fix the bolt in the hole of the structure body;
(4) and continuing to rotate the screw until the screw is locked with the tail baffle plate.
8. The use method of the detachable single-side bolt according to claim 7, is characterized in that: and (3) rotating the screw in the rotating direction of the screw in the direction from the short side to the long side of the rotating blade.
9. The use method of the detachable single-side bolt according to claim 7, is characterized in that: and (4) when the screw rotates to contact the rubber ring in the tail baffle, the rubber ring is extruded and locked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810263290.7A CN108457964B (en) | 2018-03-28 | 2018-03-28 | Detachable single-side bolt and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810263290.7A CN108457964B (en) | 2018-03-28 | 2018-03-28 | Detachable single-side bolt and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108457964A CN108457964A (en) | 2018-08-28 |
| CN108457964B true CN108457964B (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810263290.7A Expired - Fee Related CN108457964B (en) | 2018-03-28 | 2018-03-28 | Detachable single-side bolt and using method thereof |
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| Country | Link |
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| CN (1) | CN108457964B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110092081A (en) * | 2019-06-03 | 2019-08-06 | 四川航天系统工程研究所 | A kind of sealing structure of installation easy to disassemble |
| LU101438B1 (en) * | 2019-10-14 | 2021-04-14 | Abu Al Rubb Khalil | Fixing device |
| CN111350737A (en) * | 2020-04-02 | 2020-06-30 | 赵秀菊 | Spiral expansion bolt |
| CN111720408B (en) * | 2020-06-29 | 2022-04-08 | 海盐特邦科技股份有限公司 | Large-load fastener |
| CN112963426B (en) * | 2021-02-01 | 2022-06-17 | 中建三局集团有限公司 | Recyclable quick-release bolt for fixing template and use method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4294570A (en) * | 1978-03-07 | 1981-10-13 | Albin Meschnig | Lockable cap screw |
| CN103032438A (en) * | 2013-01-09 | 2013-04-10 | 合肥工业大学 | Pop-up single-side bolt fastener |
| CN104329351A (en) * | 2014-10-24 | 2015-02-04 | 东南大学 | Rotary type unfolding bolt fastener for single-side installation of component |
| CN205780129U (en) * | 2016-06-23 | 2016-12-07 | 海盐县海塘标准件厂 | A kind of unilateral bolt fastener of easy accessibility |
| CN205858923U (en) * | 2016-06-22 | 2017-01-04 | 新昌县七星街道鑫瑞机械厂 | The simple unilateral bolt fastener of a kind of use |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7077610B2 (en) * | 2002-02-07 | 2006-07-18 | Buern Usa, L.L.C. | Toggle bolt device |
| US9188142B2 (en) * | 2011-08-18 | 2015-11-17 | Empire Technology Development | Hinged arm mechanically activated fastener |
-
2018
- 2018-03-28 CN CN201810263290.7A patent/CN108457964B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4294570A (en) * | 1978-03-07 | 1981-10-13 | Albin Meschnig | Lockable cap screw |
| CN103032438A (en) * | 2013-01-09 | 2013-04-10 | 合肥工业大学 | Pop-up single-side bolt fastener |
| CN104329351A (en) * | 2014-10-24 | 2015-02-04 | 东南大学 | Rotary type unfolding bolt fastener for single-side installation of component |
| CN205858923U (en) * | 2016-06-22 | 2017-01-04 | 新昌县七星街道鑫瑞机械厂 | The simple unilateral bolt fastener of a kind of use |
| CN205780129U (en) * | 2016-06-23 | 2016-12-07 | 海盐县海塘标准件厂 | A kind of unilateral bolt fastener of easy accessibility |
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| Publication number | Publication date |
|---|---|
| CN108457964A (en) | 2018-08-28 |
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Granted publication date: 20200505 |