CN108571507B - Deformation shrinkage self-recovery split type unilateral bolt fastener with cambered surface - Google Patents
Deformation shrinkage self-recovery split type unilateral bolt fastener with cambered surface Download PDFInfo
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- CN108571507B CN108571507B CN201810684311.2A CN201810684311A CN108571507B CN 108571507 B CN108571507 B CN 108571507B CN 201810684311 A CN201810684311 A CN 201810684311A CN 108571507 B CN108571507 B CN 108571507B
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- 238000011084 recovery Methods 0.000 title claims abstract description 19
- 238000009434 installation Methods 0.000 claims abstract description 23
- 230000008602 contraction Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 7
- 239000000178 monomer Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- 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
-
- 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
- F16B37/00—Nuts or like thread-engaging members
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- 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
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention relates to a deformation shrinkage self-recovery split type unilateral bolt fastener with an arc surface and an installation tool thereof, wherein the fastener comprises a round-head bolt, a nut, a washer, a sleeve and a split type gasket, the nut, the washer, the sleeve and the split type gasket are sequentially sleeved on the round-head bolt along the axial direction of the round-head bolt; the installation tool comprises an operating rod and a base. Compared with the prior art, the invention utilizes the characteristic that the split gasket can automatically return to the original shape after being deformed, deformed and contracted and the force is removed, so that the split gasket of the fastener can normally return under the premise of ensuring the mechanical property by passing through the relatively narrow connecting piece mounting hole and automatically returning to the original shape under the action of the elastic force of the rubber ring after reaching the other side of the connecting piece, thereby realizing the quick and accurate mounting work of the fastener on one side of the connecting piece.
Description
Technical Field
The invention belongs to the technical field of unilateral bolts, and relates to a deformation contraction self-recovery split type unilateral bolt fastener with an arc surface and an installation tool thereof.
Background
In the fields of civil and architectural engineering and mechanical installation, the requirement for connecting and fastening structural members is increasing. In the case of bolts which are currently in common use, when fastening and connecting members, workers need to work on both sides of the members at the same time, namely, insert a bolt with a nut on one side and then tighten the nut with a tool on the other side. The connecting and fastening method has simple structure, convenient operation and good bearing capacity, but is only suitable for the open-section components, and the common bolt and nut connecting and fastening method cannot be used in some special occasions, such as connecting and fastening the closed-section components or the components which are inconvenient to operate on the other side. Such as: in steel pipe structures and steel pipe concrete structures, beam column connection nodes cannot be fastened and installed by the common bolt-nut connection fastening method because steel pipe columns are closed sections and cannot be operated on two sides and can only be connected and installed on one side. At present, no corresponding unilateral bolt product exists in the domestic market, and related published patents weaken too much bolt rods or reduce too few stress points of bolt heads; although similar products appear in foreign markets, the products are difficult to apply large pretension force to the bolts in the installation stage to form a friction type bolt connecting joint, the comprehensive mechanical property of the load is not ideal, and the application of the product in building structure earthquake-resistant design is greatly limited.
The Chinese patent of the invention with the publication number of CN105437149A relates to a deformation and shrinkage self-recovery unilateral bolt fastener installation tool, wherein a split type gasket is divided into a plurality of parts, the gaskets are connected into a whole through an external rubber ring, and a round head bolt and the split type gasket are installed through a guide rod and a gasket clamp. Although the installation process and mode can be simplified to this fastener mounting tool, its structure equipment is complicated to at the gasket deformation and from the in-process that restores, easily because the atress of four split type gaskets is inhomogeneous or the elasticity of rubber ring is inhomogeneous leads to the unable normal recovery of gasket, has influenced normal use.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a deformation shrinkage self-recovery split type unilateral bolt fastener with an arc surface and an installation tool thereof.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a be equipped with the deformation shrink of cambered surface from replying split type unilateral bolt fastener, this fastener is used for fixing the connecting piece, the fastener include the button head bolt and establish nut, packing ring, sleeve, split type gasket on the button head bolt along the button head bolt axial in proper order, split type gasket include a plurality of along circumference in proper order end to end's gasket monomer and establish the rubber ring at gasket monomer outside, the free both ends of gasket all be equipped with the arc section. The gasket is a one-piece gasket. The sleeve and the washer can increase the static friction force of the whole fastener, and the installation firmness is improved.
As a preferable technical scheme, the split gasket comprises at least 4 gasket monomers (such as 6 gasket monomers, 8 gasket monomers and the like), and the at least 4 gasket monomers are sequentially connected end to end along the circumferential direction to form a circular ring shape; the rubber ring is positioned outside the annular split gasket. The size of the split gasket is changed greatly after being stressed and extruded, and the split gasket is easy to place in a mounting hole.
Furthermore, the arc-shaped section comprises a concave surface and a convex surface which are connected, and the concave surface and the convex surface are in smooth transition. When the split gasket is deformed, the adjacent two gasket single bodies are contacted through the matching of the concave surface and the convex surface, so that the deformation and recovery stability of the split gasket is ensured, and the installation power is improved; the concave surfaces and the convex surfaces are in one-to-one correspondence, the gasket monomers can be completely matched without influencing the mechanical property, and meanwhile, the gasket monomers have the same structure, so that the batch production by using a mold is facilitated.
Further, the curvature radius of the concave surface is the same as that of the convex surface.
Furthermore, a groove matched with the rubber ring is formed in the outer side face of the gasket monomer. The annular grooves are formed by combining the grooves on the outer side surfaces of the gasket monomers which are sequentially connected end to end along the circumferential direction and are used for nesting and installing the rubber ring without gluing the rubber ring.
Furthermore, a connecting piece mounting hole is formed in the connecting piece, a boss is arranged on one side of the split type gasket, and the outer diameter of the boss is smaller than or equal to the inner diameter of the connecting piece mounting hole. The boss is matched with the connecting piece mounting hole, the coaxiality of the split type gasket and the connecting piece mounting hole is improved, the stress of the round-head bolt and the split type gasket is more uniform, and the mechanical property is good.
Further, the outer diameter of the sleeve is smaller than or equal to the inner diameter of the connecting piece mounting hole. The round-head bolt penetrates through the connecting piece mounting hole, the gasket and the split type gasket fix the connecting piece from two sides respectively, and the sleeve supports and stabilizes in the connecting piece mounting hole. The split type gasket can keep a round shape when not stressed, and the outer diameter of the split type gasket is larger than the inner diameter of the mounting hole of the connecting piece; after being extruded, deformed and contracted by external force, the elastic connecting piece becomes an ellipse-like shape, and the length of the short shaft is less than the inner diameter of the mounting hole of the connecting piece and can pass through the mounting hole of the connecting piece; after the external force is removed, the split gasket can be restored under the elastic action of the rubber ring.
Furthermore, the round-head bolt is provided with a limit flange matched with the split type gasket, and the outer diameter of the limit flange is larger than the inner diameter of the split type gasket. The limiting flange is used for clamping and limiting the split type gasket from the outer side.
The utility model provides a mounting tool that is used for being equipped with the split type unilateral bolt fastener of deformation shrink self-recovery of cambered surface, this mounting tool includes the action bars and sets up the base in action bars one end, the other end of action bars can dismantle with the tip of button head bolt and be connected. The operating rod is convenient for sending the round-head bolt into the connecting piece mounting hole and pulling back the round-head bolt. The operating rod can be disassembled according to the requirement and can be repeatedly used.
Furthermore, the end part of the round head bolt is provided with a screw hole matched with one end of the operating rod.
Furthermore, the operating rod is provided with a thimble matched with the split type gasket. The thimble is used for pushing split type gasket on the action bars into the mounting hole.
As a preferable technical scheme, an annular groove for placing and fixing the thimble is formed in the operating rod.
When the fastener is installed, the round-head bolt and the split type gasket deformed by extrusion penetrate through one side of the connecting piece installation hole and reach the other side of the connecting piece installation hole, and then the split type gasket returns to the original shape under the elastic action of the rubber ring; the base is pulled back, the round-head bolt is pulled back through the operating rod, the round-head bolt enables the split type gasket to be tightly pressed on the side face of the connecting piece, and the boss is clamped into the mounting hole of the connecting piece to be positioned; and finally, sleeving the sleeve, the washer and the nut into the tail part of the round-head bolt in sequence, and screwing the nut, so that the installation of the fastener on the connecting piece is completed.
Compared with the prior art, the invention has the following characteristics:
1) the split gasket of the unilateral bolt fastener can normally return under the premise of ensuring the mechanical property by utilizing the characteristic that the split gasket can automatically return to the original shape after being deformed through a relatively narrow connecting piece mounting hole after being stressed, deformed and contracted and the force is removed, so that the split gasket of the unilateral bolt fastener can quickly and accurately finish the mounting work of the unilateral bolt fastener on one side of the connecting piece;
2) the fastener adopts a spatial dislocation contraction structure, and can conveniently and quickly reach an installation position; when the split type gasket is extruded, the convex surface and the concave surface which are in pairwise matched contact slide, the convex surface plays a certain limiting role, the sliding limit of the gasket monomer is restrained, the gasket is not separated from a rubber ring, so that the split type gasket is not disassembled and fails, meanwhile, the concave surface plays a certain role in promoting recovery when the extrusion external force is cancelled and the split type gasket is recovered to a natural state, so that the split type gasket can naturally slide back to the original state, and the effect is similar to that of a lubricant; in addition, the arc-shaped section structure does not need viscose glue, so that the installation of the split gasket is convenient, and the automatic production is easy to realize;
3) the overall size of the mounting tool is small, the fastener can be mounted in a narrow space, and the mounting tool can be repeatedly used;
4) the requirements on field installation environment and installation workers are low, the efficiency of building and industrial field installation is improved, batch and rapid operation is facilitated, the fastening installation operation of connecting pieces at various positions can be met, and the application range is wider.
Drawings
FIG. 1 is a schematic view of a fastener and installation tool of the present invention;
FIG. 2 is a schematic structural diagram of the split gasket of the present invention when deformed by a force;
FIG. 3 is a schematic structural view of the split gasket of the present invention when it is not deformed;
FIG. 4 is a schematic structural view of a gasket unit according to the present invention;
FIG. 5 is a schematic structural view of the split washer of the present invention before it passes through the connecting member mounting hole when the fastener is installed;
FIG. 6 is a schematic structural view of the split washer after passing through the connecting member mounting hole when the fastener of the present invention is installed;
FIG. 7 is a schematic view of the fastener of the present invention shown after installation;
the notation in the figure is:
the device comprises a base 1, an operating rod 2, an ejector pin 3, a round-head bolt 4a, a sleeve 4b, a washer 4c, a nut 4d, a limiting flange 4e, a split type gasket 5a, a gasket single body 5b, a rubber ring 5b, an arc-shaped section 5d, a groove 5e, a boss 5e, a connecting piece 6 and a connecting piece mounting hole 6 a.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example (b):
as shown in figure 1, the deformation shrink self-recovery split type unilateral bolt fastener with the cambered surface is used for fixing the connecting piece 6, the fastener comprises a round-head bolt 4a and a nut 4d sequentially sleeved on the round-head bolt 4a along the axial direction of the round-head bolt 4a, a gasket 4c, a sleeve 4b and a split type gasket 5, as shown in figure 2 and figure 3, the split type gasket 5 comprises a plurality of gasket single bodies 5a sequentially connected end to end along the circumferential direction and a rubber ring 5b sleeved outside the gasket single bodies 5a, and the two ends of the gasket single bodies 5a are provided with arc-shaped sections 5 c.
As shown in fig. 4, the arc-shaped cross section 5c comprises a concave surface and a convex surface which are connected, and the concave surface and the convex surface are in smooth transition. The radius of curvature of the concave surface is the same as that of the convex surface. The outer side surface of the gasket single body 5a is provided with a groove 5d matched with the rubber ring 5 b. The four grooves on the outer side surface of the gasket monomer 5a sequentially connected end to end along the circumferential direction are combined to form an annular groove, the width of the rubber ring 5b is slightly larger than that of the annular groove, but the diameter of the rubber ring 5b is smaller than that of the annular groove, when the rubber ring 5b is embedded into the annular groove, the rubber ring 5b deforms along with the annular groove, the diameter is increased, the width of the rubber ring is reduced to be approximately equal to that of the annular groove, and certain elastic contractive force is provided.
Connecting piece mounting hole 6a has been seted up on the connecting piece 6, and one side of split type gasket 5 is equipped with boss 5e, and the external diameter of this boss 5e is less than or equal to the internal diameter of connecting piece mounting hole 6 a. The outer diameter of the sleeve 4b is smaller than or equal to the inner diameter of the connector mounting hole 6 a. And a limiting flange 4e matched with the split type gasket 5 is arranged on the round-head bolt 4a, and the outer diameter of the limiting flange 4e is larger than the inner diameter of the split type gasket 5.
The mounting tool for the fastener comprises an operating rod 2 and a base 1 arranged at one end of the operating rod 2, wherein the other end of the operating rod 2 is detachably connected with the end part of a round head bolt 4 a. The end of the round head bolt 4a is provided with a screw hole matched with one end of the operating rod 2. The operating rod 2 is provided with a thimble 3 matched with the split type gasket 5.
Taking a single-side bolt fastener with four gasket single bodies 5a as an example, the specific process of installing the connecting piece 6 by using the installation tool is as follows:
1. as shown in fig. 5, the sleeve 4b, the washer 4c and the nut 4d are sequentially arranged at a position close to the base 1 after passing through the operating rod 2;
2. the rubber ring 5b is sleeved in the annular groove, the four gasket monomers 5a are connected into a whole through the rubber ring 5b to form a split gasket 5, and the split gasket 5 penetrates into the operating rod 2 and then moves to a position close to the thimble 3;
3. the round head bolt 4a is connected with one end of the operating rod 2 through a screw hole at the end part of the round head bolt;
4. the round-head bolt 4a firstly passes through the connecting piece mounting hole 6a integrally, and then the split type gasket 5 is extruded to deform into an oval shape, and the diameter of the minor axis of the oval is smaller than that of the connecting piece mounting hole;
5. the elliptic split type gasket 5 is rotated by a certain angle by taking the vertical direction as a rotating shaft, so as to enter the mounting hole of the connecting piece;
6. the elliptic split type gasket 5 is pushed to the other side of the connecting piece 6 through the thimble, and the split type gasket 5 returns to a natural state due to the withdrawal of the extrusion external force after passing through the mounting hole of the connecting piece, as shown in fig. 6;
7. the base 1 is pulled back, the operating rod 2 connected with the base and the round-head bolt 4a are pulled back together, so that the round-head bolt 4a compresses the split type gasket 5, then the sleeve 4b, the washer 4c and the nut 4d are sequentially installed, the nut 4d is screwed, then the operating rod 2 is detached, and the installation work of the unilateral bolt fastener is completed, as shown in fig. 7.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (8)
1. The deformation contraction self-recovery split type unilateral bolt fastener with the cambered surface is characterized in that the fastener is used for fixing a connecting piece (6) and comprises a round-head bolt (4a), a nut (4d), a washer (4c), a sleeve (4b) and a split type gasket (5), wherein the nut (4d), the washer (4c), the sleeve (4b) and the split type gasket (5) are sequentially sleeved on the round-head bolt (4a) along the axial direction of the round-head bolt (4a), the split type gasket (5) comprises a plurality of gasket single bodies (5a) which are sequentially connected end to end along the circumferential direction and a rubber ring (5b) sleeved outside the gasket single bodies (5a), and arc-shaped sections (5c) are arranged at two ends of the gasket single bodies (5 a);
the arc-shaped section (5c) comprises a concave surface and a convex surface which are connected, and the concave surface and the convex surface are in smooth transition;
the curvature radius of the concave surface is the same as that of the convex surface.
2. The deformation-contraction self-recovery split type unilateral bolt fastener with the cambered surface according to claim 1, wherein a groove (5d) matched with the rubber ring (5b) is formed in the outer side surface of the gasket single body (5 a).
3. The deformation shrinkage self-recovery split type unilateral bolt fastener with the cambered surface according to claim 1, wherein the connecting piece (6) is provided with a connecting piece mounting hole (6a), one side of the split type gasket (5) is provided with a boss (5e), and the outer diameter of the boss (5e) is smaller than or equal to the inner diameter of the connecting piece mounting hole (6 a).
4. The split type unilateral bolt fastener with the cambered surface and the deformation shrinkage self-recovery function is characterized in that the outer diameter of the sleeve (4b) is smaller than or equal to the inner diameter of the connecting piece mounting hole (6 a).
5. The self-recovery split type unilateral bolt fastener with the cambered surface through deformation and shrinkage is characterized in that the round head bolt (4a) is provided with a limiting flange (4e) matched with the split type gasket (5), and the outer diameter of the limiting flange (4e) is larger than the inner diameter of the split type gasket (5).
6. An installation tool for the cambered deformation shrinkage self-recovery split type unilateral bolt fastener according to any one of claims 1-5, which comprises an operating rod (2) and a base (1) arranged at one end of the operating rod (2), wherein the other end of the operating rod (2) is detachably connected with the end part of the round head bolt (4 a).
7. The mounting tool for the self-recovery split type unilateral bolt fastener with the cambered surface and capable of deforming and contracting is characterized in that a screw hole matched with one end of the operating rod (2) is formed in the end portion of the round-head bolt (4 a).
8. The mounting tool for the deformed and contracted self-recovery split type unilateral bolt fastener with the cambered surface according to claim 6, wherein the operating rod (2) is provided with a thimble (3) matched with the split type gasket (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810684311.2A CN108571507B (en) | 2018-06-28 | 2018-06-28 | Deformation shrinkage self-recovery split type unilateral bolt fastener with cambered surface |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810684311.2A CN108571507B (en) | 2018-06-28 | 2018-06-28 | Deformation shrinkage self-recovery split type unilateral bolt fastener with cambered surface |
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| CN108571507A CN108571507A (en) | 2018-09-25 |
| CN108571507B true CN108571507B (en) | 2020-08-18 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111609025B (en) * | 2019-02-26 | 2022-06-03 | 宁波大智机械科技股份有限公司 | Sectional type gasket |
| CN110486365B (en) * | 2019-08-02 | 2024-08-30 | 陈娟娟 | Unilateral bolt fastener and method thereof |
| CN110671416A (en) * | 2019-10-24 | 2020-01-10 | 中国矿业大学 | Unilateral bolt fastening device with openable self-reset gasket |
| CN110900519B (en) * | 2019-11-27 | 2021-10-08 | 同济大学 | Mounting tool for sectional type split connection unilateral bolt fastener |
| CN113007203A (en) * | 2021-02-24 | 2021-06-22 | 同济大学 | Deformation expansion type split unilateral bolt fastener and mounting tool thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201368276Y (en) * | 2008-11-11 | 2009-12-23 | 广东联塑科技实业有限公司 | Pipe clip for butting pipeline |
| DE102012009256B4 (en) * | 2012-05-02 | 2015-08-06 | Norma Germany Gmbh | profile clip |
| CN202868162U (en) * | 2012-08-30 | 2013-04-10 | 广东威立瑞科技有限公司 | Pipe buckle for bellows |
| JP6202601B2 (en) * | 2013-06-05 | 2017-09-27 | イイファス株式会社 | Split blind nut |
| CN104500881B (en) * | 2014-11-27 | 2016-11-30 | 中国海洋石油总公司 | Clamping hoop type clamping device |
| CN107605887A (en) * | 2017-07-24 | 2018-01-19 | 同济大学 | External embedded rubber ring deformation retract replys split type unilateral bolt fastener certainly |
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