CN114857148A - Ring groove rivet connecting pair with adjustable initial pretightening force function and mounting method - Google Patents
Ring groove rivet connecting pair with adjustable initial pretightening force function and mounting method Download PDFInfo
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- CN114857148A CN114857148A CN202210672927.4A CN202210672927A CN114857148A CN 114857148 A CN114857148 A CN 114857148A CN 202210672927 A CN202210672927 A CN 202210672927A CN 114857148 A CN114857148 A CN 114857148A
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- rivet
- tightening
- lantern ring
- groove
- pair
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000003825 pressing Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 14
- 238000010276 construction Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010959 steel Substances 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
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/04—Rivets; Spigots or the like fastened by riveting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/02—Riveting procedures
-
- 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
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/04—Rivets; Spigots or the like fastened by riveting
- F16B19/08—Hollow rivets; Multi-part rivets
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
The invention discloses a ring groove rivet connecting pair with an adjustable initial pre-tightening force function and an installation method. The rivet comprises a rivet head, a polished rod, a ring groove locking area, a spiral groove and a tail fixing structure in sequence; the lantern ring sequentially comprises a flange and a deformation area; the connecting pair also comprises a pre-tightening nut positioned at the outer end of the lantern ring when riveting and fastening are carried out; the rivet spiral groove is provided with a thread which is matched and fastened with the pre-tightening nut. The mounting method comprises the detachable mounting of the rivet, the lantern ring and the pre-tightening nut. The invention adopts the pre-tightening nut for pre-installation, can be carried out through a conventional wrench, can adjust the pre-tightening force and the pre-tightening state according to the actual requirement, combines the advantages of bolt adjustability and rivet looseness, has no influence on the installation lantern ring by pre-tightening installation, can realize pre-tightening in the connection process, generates better pre-tightening force between connected workpieces, and can also remove the pre-tightening nut according to the requirement, thereby facilitating the subsequent installation operation.
Description
Technical Field
The invention belongs to the technical field of riveting, in particular to design and manufacture of a rivet riveting fastener for connection, belonging to the riveting class (B21J) and the fastener class (F16B) of metal machining.
Background
The pull rivet is a fastening connector commonly used in the existing fastening connection mode, and is generally used for connecting components needing to be bolted or riveted. When the fastening operation is used, the special equipment for pulling rivets is adopted to clamp the two parts to be combined, and then the metal of the sleeved annular lantern ring is extruded and filled in the pits of the plurality of annular grooves of the stud, so that the lantern ring and the stud are tightly combined and fastened. The blind rivet fastener has the same fastening force and the characteristics of never loosening and the like after the assembly is finished.
In the actual work progress, to some complicated and special requirement's connection structure, if do not install the part in advance, in the later stage of riveting connection, the skew phenomenon of mounting hole can appear, causes the construction unable to go on.
The Chinese application 202010203271 discloses a circular groove rivet connection pair with a pre-tightening function and an installation method thereof, and discloses a circular groove rivet connection pair with a pre-tightening ring, wherein the pre-tightening mode is that metal on the inner wall of the pre-tightening ring is squeezed into a circular groove of the rivet through a riveting tool to generate a pre-tightening force, the pre-tightening force generated in the process is fixed, a special riveting tool is required for pre-tightening operation, and the pre-tightening force cannot be adjusted according to the actual condition. And in the field use of current riveting fastening, the size of pretightning force needs to be mediated according to actual conditions to many situations, and the on-spot user demand at present can't be satisfied to this structure, and the limitation is great, and uses inconveniently.
Disclosure of Invention
The invention discloses a ring groove rivet connecting pair with an adjustable initial pretightening force function and an installation method thereof according to the defects of the prior art. The invention aims to provide a circular groove rivet connecting pair which can perform pre-tightening fixation according to the requirement of pre-tightening force before riveting fixation, complete riveting after the adjustment of a connected piece is completed, and can disassemble a pre-tightening piece after riveting is completed.
The invention is realized by the following technical scheme:
the utility model provides an annular rivet connection is vice with adjustable initial pretightning force function, includes rivet and lantern ring, its characterized in that: the rivet sequentially comprises a rivet cap head, a polished rod, a ring groove locking area, a spiral groove and a tail fixing structure; the lantern ring sequentially comprises a flange and a deformation area; the connecting pair also comprises a pre-tightening nut positioned at the outer end of the lantern ring before riveting and fastening; the rivet spiral groove is provided with a thread which is matched and fastened with the pre-tightening nut.
The diameter of the rivet spiral groove is not smaller than the diameter of the rivet tail fixing structure.
The rivet tail fixing structure is of a single-groove structure and can also be of a multi-groove structure.
The inner side surface of the lantern ring flange is provided with a bulge.
The two radial sides of the rivet head are provided with parallel end faces of the rivet head, which are used for clamping and arranged in parallel.
The invention relates to a connecting pair mounting method, which comprises the following steps:
1) the rivet penetrates through the connecting piece from one side, the lantern ring is sleeved from the tail of the rivet, and then the special pre-tightening nut is screwed in from the thread groove at the tail of the rivet;
2) applying torque to the pre-tightening nut by using a wrench tool, and initially pre-tightening the connection pair by adopting proper torque according to requirements, so that the gap of the connection piece is eliminated, and the position of the connected piece is corrected;
3) each set of connecting piece needing to be fastened is fastened and connected through at least one connecting pair; repeating the steps 1) to 2) when more than two connection pairs are needed for connection;
4) after the connected piece is adjusted, a pre-tightening nut is screwed out;
5) inserting a riveting tool into the rivet tail fixing structure, pressing a switch to start riveting, extruding a deformation area of the lantern ring by the riveting tool, and returning to the original position when the riveting tool reaches a set riveting force, so that the connecting pair realizes a fastening function;
6) when a plurality of connecting pairs are used for fastening the connecting pieces, the steps 4) to 5) are repeated in sequence. And finishing the whole connection and fastening.
The connecting pair is mainly applied to the engineering field of steel structure buildings, bridges, wind power tower drum supports and the like with a large number of node structures, and each node structure has at least more than two connecting points which need to be fastened by fasteners. The joint structure in the above fields has the requirements of position adjustment and clearance elimination before applying final pretightening force, so when the joint structure is used under the above working conditions, the joint pair can provide adjustable initial pretightening force which is not less than 10kN for each connecting point on the joint to be used as the position fixation of the joint, then the position of each connecting point is sequentially adjusted according to the actual condition, after all the connecting points of the joint are adjusted, the pretightening nut on the first rivet is screwed out, then a riveting tool is used for riveting, and after the rivet is installed, the steps are sequentially repeated for the next rivet until the rivets at all the connecting points on the joint are finally installed.
The invention has the following beneficial effects: compared with the existing high-strength annular groove rivet connecting pair, the fastening piece can realize pre-tightening between the connected pieces and complete the pre-installation between parts. The fastener is pre-installed by adopting the pre-tightening nut, so that the pre-tightening function is realized, the installation and rotation mode can be realized by a conventional wrench, the pre-tightening force and the pre-tightening state can be adjusted according to actual requirements, the defect that the pre-tightening force cannot be adjusted in real time in the using process of the pre-tightening ring is overcome, and the field use is more convenient. The pre-tightening nut combines the advantages of bolt adjustability and rivet looseness, pre-tightening installation has no influence on an installation lantern ring, pre-tightening in the connection process can be realized, good pre-tightening force is generated between connected workpieces, meanwhile, the pre-tightening nut can be detached as required, and subsequent installation operation is facilitated.
Drawings
FIG. 1 is a schematic cross-sectional view of a fastener of the present invention in a fastened state;
FIG. 2 is a schematic view of one construction of the fastener rivet of the present invention;
FIG. 3 is a schematic view of another construction of the fastener rivet of the present invention;
FIG. 4 is a schematic view of the rivet head configuration of the fastener of the present invention;
FIG. 5 is a schematic view of the fastener collar construction of the present invention;
FIG. 6 is a schematic view of a fastener pre-tensioned nut of the present invention;
FIG. 7 is a cross-sectional schematic view of a pre-tightened nut of the fastener of the present invention;
FIGS. 8-13 are schematic views of a single riveting process of the present invention;
FIG. 14 is a schematic view of a joint using a plurality of fasteners of the present invention.
In the figure, 1 is a rivet, 1.1 is a cap head, 1.2 is a polished rod, 1.3 is a ring groove locking area, 1.4 is a spiral groove, 1.5 is a tail fixing structure, 1.1.1 is a cap head parallel end face, 2 is a lantern ring, 2.1 is a deformation area, 2.2 is a protrusion, 2.3 is a flange, 3 is a pre-tightening nut, 3.1 is a regular hexagon, 3.2 is an internal thread, and 4 is a connecting piece.
Detailed Description
The present invention is further described below in conjunction with the following detailed description, which is intended to further illustrate the principles of the invention and is not intended to limit the invention in any way, but is equivalent or analogous to the present invention without departing from its scope.
With reference to the attached drawings.
As shown in the figure, the annular groove rivet connection pair with the function of adjusting the initial pre-tightening force comprises a rivet 1 and a lantern ring 2, wherein the rivet 1 sequentially comprises a rivet cap head 1.1, a polished rod 1.2, an annular groove locking area 1.3, a spiral groove 1.4 and a tail fixing structure 1.5; the lantern ring 2 sequentially comprises a flange 2.3 and a deformation area 2.1; the connecting pair also comprises a pre-tightening nut 3 positioned at the outer end of the lantern ring when riveting and fastening are carried out; wherein, the rivet spiral groove 1.4 is provided with a thread which is matched and fastened with the pretension nut 3.
The diameter of the rivet spiral groove 1.4 is not less than that of the rivet tail fixing structure 1.5.
The rivet tail fixing structure 1.5 of the invention is a single-groove structure or a multi-groove structure.
The inner side surface of the lantern ring flange 2.3 is provided with a bulge 2.2.
The rivet head 1.1 has parallel head end faces 1.1.1 arranged in parallel on both radial sides for clamping a setting tool.
The invention adopts a mounting tool to connect the connecting pair, the mounting tool mainly comprises a riveting tool and a spanner, and the mounting steps are as follows:
1) the rivet 1 penetrates through the connecting piece 4 from one side, the lantern ring 2 is sleeved in from the tail part of the rivet 1, and then the special pre-tightening nut 3 is screwed in from the tail part spiral groove 1.4;
2) a wrench tool is used for applying torque to the pre-tightening nut 3, proper torque is adopted according to needs to enable the connection pair to be initially pre-tightened, the pre-tightening force is transmitted to the connecting piece 4 through a flange 2.3 structure of the lantern ring 2, the gap of the connecting piece 4 is eliminated, and the position of the connected piece 4 is corrected;
3) each set of connecting piece 4 to be fastened is fastened and connected through at least one connecting pair; repeating the steps 1) to 2) when more than two connection pairs are needed for connection;
4) after the connected piece 4 is adjusted, a pre-tightening nut 3 is screwed out;
5) inserting a riveting tool into the rivet tail fixing structure 1.5, pressing a switch to start riveting, extruding a deformation area 2.1 cylindrical structure of the lantern ring 2 by the riveting tool, pressing a spherical bulge 2.2 on the inner surface of the lantern ring flange 2.3 at the end part of an anvil out of traces when the riveting tool reaches a set riveting force, returning the riveting tool to the original position, and realizing a fastening function by the connecting pair;
6) and when a plurality of connecting pairs are used for fastening the connecting piece, repeating the steps 4) to 5) in sequence to finish all connection fastening.
The connecting pair is applied to wind power generation equipment more frequently, the key positions of the wind power generation equipment are connected by high-strength bolts mostly, and due to the vibration working condition of the wind power generation set in the operation process, the bolt connection needs to be overhauled and maintained regularly, the later maintenance cost is high, and certain potential safety hazards exist. The ring groove rivet has the characteristics of high reliability and good anti-loosening performance, the potential safety hazard can be well solved, but the original rivet has no pre-tightening function, a bolt needs to be used for pre-tightening and leveling in advance in the installation process, after the leveling work is finished, the bolt is completely removed, then the ring groove rivet is penetrated into the ring groove rivet for riveting, the whole construction process is complex, and the installation efficiency is seriously influenced.
The invention adds a pre-tightening function on the basis of the original structure of the rivet, directly penetrates the pre-tightening rivet into a hole of the connecting piece during construction, screws a special pre-tightening nut at the tail part of the rivet after penetrating into the lantern ring, applies a certain torque, enables a connecting pair to generate an initial pre-tightening force not less than 10kN, and adjusts the position of the connecting piece according to the actual working condition. The structure saves the step of replacing the rivet after the bolt is used for pre-tightening, so that the whole installation efficiency is greatly improved, and the construction process is simplified.
Claims (7)
1. The utility model provides an annular rivet connection is vice with adjustable initial pretightning force function, includes rivet and lantern ring, its characterized in that: the rivet sequentially comprises a rivet cap head, a polished rod, a ring groove locking area, a spiral groove and a tail fixing structure; the lantern ring sequentially comprises a flange and a deformation area; the connecting pair also comprises a pre-tightening nut positioned at the outer end of the lantern ring before riveting and fastening; the rivet spiral groove is provided with a thread which is matched and fastened with the pre-tightening nut.
2. The annular groove rivet connecting pair with the adjustable initial pre-tightening force function of claim 1, wherein: the diameter of the rivet spiral groove is not smaller than the diameter of the rivet tail fixing structure.
3. The annular groove rivet connecting pair with the adjustable initial pre-tightening force function as claimed in claim 2, wherein: the rivet tail fixing structure is of a single-groove structure.
4. The annular groove rivet connecting pair with the adjustable initial pre-tightening force function as claimed in claim 2, wherein: the rivet tail fixing structure is a multi-groove structure.
5. The annular groove rivet connection pair with the adjustable initial pretightening force function according to any one of claims 1 to 4, wherein: the inner side surface of the lantern ring flange is provided with a bulge.
6. The annular groove rivet connecting pair with the adjustable initial pre-tightening force function of claim 5, wherein: the two radial sides of the rivet head are provided with parallel end faces of the rivet head, which are used for clamping and arranged in parallel.
7. A method for installing a ring groove rivet connecting pair with an adjustable initial pretightening force function is characterized by comprising the following steps:
1) the rivet penetrates through the connecting piece from one side, the lantern ring is sleeved from the tail part of the rivet, and then the special pre-tightening nut is screwed in from the spiral groove at the tail part;
2) applying torque to the pre-tightening nut by using a wrench tool, and initially pre-tightening the connection pair by adopting proper torque according to requirements, so that the gap of the connection piece is eliminated, and the position of the connected piece is corrected;
3) each set of connecting piece needing to be fastened is fastened and connected through at least one connecting pair; repeating the steps 1) to 2) when more than two connection pairs are needed for connection;
4) after the connected piece is adjusted, a pre-tightening nut is screwed out;
5) inserting a riveting tool into the rivet tail fixing structure, pressing a switch to start riveting, extruding a deformation area of the lantern ring by the riveting tool, and returning to the original position when the riveting tool reaches a set riveting force, so that the connecting pair realizes a fastening function;
6) when a plurality of connecting pairs are used for fastening the connecting pieces, the steps 4) to 5) are repeated in sequence. And finishing the whole connection and fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210672927.4A CN114857148A (en) | 2022-06-14 | 2022-06-14 | Ring groove rivet connecting pair with adjustable initial pretightening force function and mounting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210672927.4A CN114857148A (en) | 2022-06-14 | 2022-06-14 | Ring groove rivet connecting pair with adjustable initial pretightening force function and mounting method |
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| Publication Number | Publication Date |
|---|---|
| CN114857148A true CN114857148A (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210672927.4A Pending CN114857148A (en) | 2022-06-14 | 2022-06-14 | Ring groove rivet connecting pair with adjustable initial pretightening force function and mounting method |
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| CN (1) | CN114857148A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2001290A (en) * | 1933-06-17 | 1935-05-14 | Dardelet Threadlock Corp | Means for forming a fluid-tight joint |
| US6454502B1 (en) * | 2000-09-13 | 2002-09-24 | Fairchild Holding Corp. | Blind fastener and drive nut assembly |
| CN202251348U (en) * | 2011-08-18 | 2012-05-30 | 上海锐拓五金制品有限公司 | Riveted member substitute for welding nut |
| US20150308479A1 (en) * | 2014-04-29 | 2015-10-29 | Alcoa Inc. | Swage lock fasteners |
| US20190323536A1 (en) * | 2016-06-23 | 2019-10-24 | Baier & Michels Gmbh & Co. Kg | Closure element for closing and sealing bores that are subject to internal pressure |
| CN111188822A (en) * | 2020-01-17 | 2020-05-22 | 成都浩益科技有限公司 | Anti-loose fastening method and locking system with controllable clamping force |
| CN112576590A (en) * | 2020-12-08 | 2021-03-30 | 成都丁万创新科技有限公司 | Pre-tightening ring groove rivet kit and mounting and dismounting method thereof |
-
2022
- 2022-06-14 CN CN202210672927.4A patent/CN114857148A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2001290A (en) * | 1933-06-17 | 1935-05-14 | Dardelet Threadlock Corp | Means for forming a fluid-tight joint |
| US6454502B1 (en) * | 2000-09-13 | 2002-09-24 | Fairchild Holding Corp. | Blind fastener and drive nut assembly |
| CN202251348U (en) * | 2011-08-18 | 2012-05-30 | 上海锐拓五金制品有限公司 | Riveted member substitute for welding nut |
| US20150308479A1 (en) * | 2014-04-29 | 2015-10-29 | Alcoa Inc. | Swage lock fasteners |
| US20190323536A1 (en) * | 2016-06-23 | 2019-10-24 | Baier & Michels Gmbh & Co. Kg | Closure element for closing and sealing bores that are subject to internal pressure |
| CN111188822A (en) * | 2020-01-17 | 2020-05-22 | 成都浩益科技有限公司 | Anti-loose fastening method and locking system with controllable clamping force |
| CN112576590A (en) * | 2020-12-08 | 2021-03-30 | 成都丁万创新科技有限公司 | Pre-tightening ring groove rivet kit and mounting and dismounting method thereof |
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