CN103089791A - Simple method for ensuring connection preload of bolt and component for simple method - Google Patents
Simple method for ensuring connection preload of bolt and component for simple method Download PDFInfo
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- CN103089791A CN103089791A CN2011103317062A CN201110331706A CN103089791A CN 103089791 A CN103089791 A CN 103089791A CN 2011103317062 A CN2011103317062 A CN 2011103317062A CN 201110331706 A CN201110331706 A CN 201110331706A CN 103089791 A CN103089791 A CN 103089791A
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- bearing ring
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- force
- reference pads
- force bearing
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Abstract
The invention discloses a simple method for ensuring the connection preload of a bolt and a component for the simple method. According to the method, a reference gasket (4) is taken as a reference, a force bearing ring (3) is used as a deformed part, and is extruded and deformed to be as thick as the reference gasket (4) when the connection preload of the bolt (1) meets a preset requirement, and whether a requirement for the connection preload is met or not is judged by judging whether the reference gasket (4) can move between two flat gaskets (2). The simple method and the component are accurate in force fixation and convenient to use, the use of a force fixation wrench is avoided, and the influence of external assembly factors on force fixation accuracy is eliminated. Particularly when the component is used together with an internal thread riveting nut component, whether a riveting nut is riveted in place or not can be judged without an external force fixation wrench, so that a failure caused by the insufficient or excessive riveting of the internal thread riveting nut is avoided. A mounting position is stable, and easiness for assembly is ensured. The using cost of an enterprise can be greatly lowered, and waste is reduced. Moreover, the component is quick and simple in production, high in safety and reliability and convenient to maintain.
Description
Technical field
The present invention relates to a kind of simple and easy method and assembly used that guarantees bolt connection preload force, belong to the link technical field.
Background technique
In Course Exercise in Machinery Elements Design, some place of having relatively high expectations (as docking of aircraft fuselage and wing, the places such as connection that motor is installed) has certain requirement to the preload force that connects, and that bolt can not be twisted is too tight, the too pine that bolt can not be twisted; The intensity of too tight bolt can be influenced, and too pine can cause vibration, and is all undesirable.In order to reach the preload force of design, traditional practice is to decide torque wrench with plain bolt or nut employing to operate.But narrow and small at some installing spaces, be difficult to use and decide the occasion that torque wrench operates, just can't use said method.In order to address the above problem, the fastening piece that also has some can reach the pretension requirement in the market, but all kinds of less, in some particular application, be subjected to the impact of extraneous assembling factor still not too applicable.When especially using with internal thread Insert Nut assembly, the torque wrench of need not reordering outward just can be known whether Insert Nut rivets and put in place.Thereby avoid the internal thread Insert Nut to rivet not in place or rivet excessive inefficacy, causing mechanical failure when serious.If in the launch vehicle that rocket, aircraft, high ferro etc. are travelled at a high speed, also be easy to accidents causedly, cause very large property loss and life safety.When needing the preload force of fixed range on the composite structure plate, plain washer such as can't satisfy at the problem.
Summary of the invention
The object of the invention is to, provide a kind of and guarantee that bolt connects simple and easy method and the assembly used of preload force.Solution is decided torque wrench and is carried out the problem that predetermined force connects because narrow space is difficult to use, particularly solve when being used in conjunction with internal thread Insert Nut assembly, prevent that internal thread Insert Nut riveted joint is not in place or rivet the technical problem of excessive inefficacy, guarantee reliability and the sealing of riveting.
Technological scheme of the present invention
A kind of simple and easy method that guarantees bolt connection preload force, the method are two plain cushions of cover on bolt, cover force bearing ring and reference pads between two plain cushions; The external diameter of force bearing ring is less than the internal diameter of reference pads, and the thickness of force bearing ring is greater than the thickness of reference pads; Be screwed in the process of link at bolt, two plain cushions are drawn close under the effect of axial force mutually, contact at first and load gradually the thickness attenuation gradually that makes force bearing ring with the both ends of the surface of force bearing ring, external diameter is outside distending gradually, constantly stir reference pads when tighting a bolt, when reference pads had just begun can't freely be rotated by jam-packed, the connection preload force of expression bolt had reached pre-provisioning request.
Aforementioned assurance bolt connects in the simple and easy method of preload force, and described force bearing ring is extruded into thickness with reference pads when identical by original depth, the preload force that the axial pressure that force bearing ring bears equals to be scheduled to.
Aforementioned assurance bolt connects in the simple and easy method of preload force, and make preferably by alloyed steel, Corrosion Resisting Steel, Cuprum alloy, titanium alloy or aluminum alloy with plastic deformation for described force bearing ring.
Aforementioned assurance bolt connects in the simple and easy method of preload force, the internal diameter of described reference pads is greater than the maximum outside diameter of force bearing ring 2mm at least, when preventing that force bearing ring also is not extruded into the thickness of reference pads, because causing external diameter, the outside distending of force bearing ring becomes large, contact with the internal diameter of reference pads because frictional force increases and to rotate, cause erroneous judgement.
Aforementioned assurance bolt connects in the simple and easy method of preload force, and described reference pads is provided with poke hole, stirs with instrument with convenient.
Aforementioned assurance bolt connect the simple and easy method of preload force used decide the power assembly, comprise two plain cushions that are enclosed within on bolt; Bolt between two plain cushions is provided with force bearing ring and reference pads, and the external diameter of force bearing ring is less than the internal diameter of reference pads, and the thickness of force bearing ring is greater than the thickness of reference pads.
In the aforesaid power of deciding assembly, described reference pads is provided with poke hole.
In the aforesaid power of deciding assembly, described force bearing ring is circular, and the distance between the annulus both ends of the surface is greater than reference pads thickness, and the endoporus of annulus middle part is provided with boss, and the minimum diameter at boss place is greater than the bolt external diameter.
In the aforesaid power of deciding assembly, more than the internal diameter 2mm of the maximum outside diameter of described force bearing ring less than reference pads, the external diameter of reference pads is identical with the external diameter of plain cushion.
Compared with prior art, it is accurate, easy to use that the present invention decides power, need not decide torque wrench, also is not subjected to the correctness that it decides power that affects of extraneous assembling factor.When especially being used in conjunction with the internal thread Insert Nut, the torque wrench of need not reordering outward just can be known whether Insert Nut rivets and put in place.Thereby avoid internal thread Insert Nut riveted joint not in place or rivet excessive and lost efficacy.Location comparison during installation is stable, and assembling easily.Can greatly reduce the user cost of enterprise, cut the waste.And produce quick and easyly, safety reliability is high, and is easy to maintenance.
Description of drawings
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is application example schematic diagram of the present invention.
Being labeled as in accompanying drawing: 1-bolt, 2-plain cushion, 3-force bearing ring, 4-reference pads, 5-poke hole, 6-boss, 7-internal thread Insert Nut, 8-riveting portion.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples, but not as the foundation to the present invention's restriction.
Embodiment.
A kind of simple and easy method that guarantees bolt connection preload force, as shown in Figure 1.The method is two plain cushions 2 of cover on bolt 1, cover force bearing ring 3 and reference pads 4 between two plain cushions 2; The external diameter of force bearing ring 3 is less than the internal diameter of reference pads 4, and the thickness of force bearing ring 3 is greater than the thickness of reference pads 4; Be screwed in the process of link at bolt 1, two plain cushions 2 are drawn close under the effect of axial force mutually, contact at first and load gradually the thickness attenuation gradually that makes force bearing ring 3 with the both ends of the surface of force bearing ring 3, external diameter is outside distending gradually, constantly stir reference pads 4 in 1 tighting a bolt, when reference pads 4 had just begun can't freely be rotated by jam-packed, the connection preload force of expression bolt 1 had reached pre-provisioning request.Described force bearing ring 3 is extruded into thickness with reference pads 4 when identical by original depth, the preload force that the axial pressure that force bearing ring 3 bears equals to be scheduled to.Alloyed steel, Corrosion Resisting Steel, Cuprum alloy, titanium alloy or aluminum alloy are made preferably in described force bearing ring 3 use plastic deformations.The internal diameter of described reference pads 4 is greater than the maximum outside diameter of force bearing ring 3 2mm at least, when preventing that force bearing ring 3 also is not extruded into the thickness of reference pads 4, become large because the outside distending of force bearing ring 3 causes external diameter, contact with the internal diameter of reference pads 4 because frictional force increases and to rotate, cause erroneous judgement.Described reference pads 4 is provided with poke hole 5, stirs with instrument with convenient.
Aforementioned assurance bolt connect the simple and easy method of preload force used decide the power assembly, as shown in Figure 1, comprise two plain cushions 2 that are enclosed within on bolt 1; Bolt 1 between two plain cushions 2 is provided with force bearing ring 3 and reference pads 4, and the external diameter of force bearing ring 3 is less than the internal diameter of reference pads 4, and the thickness of force bearing ring 3 is greater than the thickness of reference pads 4.Described reference pads 4 is provided with poke hole 5.Described force bearing ring 3 is circular, and the distance between the annulus both ends of the surface is greater than reference pads 4 thickness, and the endoporus of annulus middle part is provided with boss 6, and the minimum diameter at boss 6 places is greater than bolt 1 external diameter.More than the internal diameter 2mm of the maximum outside diameter of described force bearing ring 3 less than reference pads 4, the external diameter of reference pads 4 is identical with the external diameter of plain cushion 2.
Be applied to the example of internal thread Insert Nut below in conjunction with the present invention, the present invention is described further, as shown in Figure 2.
When the present invention is applied to the internal thread Insert Nut, before bolt 1 inserts internal thread Insert Nut 7, first plain cushion 2 of cover on bolt 1, then overlap a force bearing ring 3 and a reference pads 4 and then overlap 2, two plain cushions 2 of a plain cushion force bearing ring 3 and reference pads 4 are clipped in the middle.Then bolt 1 is inserted in the hole of internal thread Insert Nut 7.When tighting a bolt, two plain cushions 2 are drawn close under the effect of axial force mutually, contact at first and load gradually the thickness attenuation gradually that makes force bearing ring 3 with the both ends of the surface of force bearing ring 3, external diameter is outside distending gradually, constantly stir reference pads 4 in 1 tighting a bolt, when reference pads 4 has just begun can't freely be rotated by jam-packed, be illustrated in the preload force value that has reached regulation on bolt 1, the riveting portion 8 of internal thread Insert Nut 7 is also riveted and is put in place simultaneously.Do not use and decide torque wrench, do not spend the riveted joint situation that just can know internal thread Insert Nut 7 of seeing yet, easy to operate simple.Greatly improved the efficient of work.
Some explanation of the present invention: preload force of the present invention is generally 80% of bolt design intensity, or is the riveted joint preload force value of Insert Nut.When mounted, be preferably in and scribble oiling agent (as cured, hexadecanol etc.) on interior ring packing ring, ring packing ring, outer ring spacer screwing force when mounted in reducing, and wear prevention blocks.The sectional shape of force bearing ring of the present invention can be arbitrary shape, just reach the preload force of design when putting in place as long as can satisfy extruding, make as far as possible in addition the outside distending of force bearing ring (should reserve enough gaps between force bearing ring and reference pads endoporus in extrusion process, during with the outside distending of assurance force bearing ring, not can with reference pads endoporus asphyxia by external pressure on the chest and abdomen), avoid force bearing ring inwardly swollen and bolt locking.
Claims (9)
1. one kind guarantees that bolt connects the simple and easy method of preload force, is characterized in that: the method is at the upper cover of bolt (1) two plain cushions (2), overlaps force bearing ring (3) and reference pads (4) between two plain cushions (2); The external diameter of force bearing ring (3) is less than the internal diameter of reference pads (4), and the thickness of force bearing ring (3) is greater than the thickness of reference pads (4); In bolt (1) is screwed into the process of link, two plain cushions (2) are drawn close under the effect of axial force mutually, contact at first and load gradually the thickness attenuation gradually that makes force bearing ring (3) with the both ends of the surface of force bearing ring (3), external diameter is outside distending gradually, constantly stir reference pads (4) in tight a bolt (1), when reference pads (4) had just begun can't freely be rotated by jam-packed, the connection preload force of expression bolt (1) had reached pre-provisioning request.
2. guarantee according to claim 1 that bolt connects the simple and easy method of preload force, it is characterized in that: described force bearing ring (3) is extruded into thickness with reference pads (4) when identical by original depth, the preload force that the axial pressure that force bearing ring (3) bears equals to be scheduled to.
3. guarantee according to claim 1 that bolt connects the simple and easy method of preload force, it is characterized in that: make preferably by alloyed steel, Corrosion Resisting Steel, Cuprum alloy, titanium alloy or aluminum alloy with plastic deformation for described force bearing ring (3).
4. guarantee according to claim 1 that bolt connects the simple and easy method of preload force, it is characterized in that: the internal diameter of described reference pads (4) is greater than the maximum outside diameter of force bearing ring (3) 2mm at least, when preventing that force bearing ring (3) also is not extruded into the thickness of reference pads (4), because causing external diameter, the outside distending of force bearing ring (3) becomes large, contact with the internal diameter of reference pads (4) because frictional force increases and to rotate, cause erroneous judgement.
5. guarantee according to claim 1 that bolt connects the simple and easy method of preload force, it is characterized in that: described reference pads (4) is provided with poke hole (5), stirs with instrument with convenient.
The described assurance bolt of the arbitrary claim of claim 1～5 connect the simple and easy method of preload force used decide the power assembly, comprise two plain cushions (2) that are enclosed within on bolt (1); It is characterized in that: the bolt (1) between two plain cushions (2) is provided with force bearing ring (3) and reference pads (4), and the external diameter of force bearing ring (3) is less than the internal diameter of reference pads (4), and the thickness of force bearing ring (3) is greater than the thickness of reference pads (4).
7. the power of deciding assembly according to claim 6, it is characterized in that: described reference pads (4) is provided with poke hole (5).
8. the power of deciding assembly according to claim 6, it is characterized in that: described force bearing ring (3) is for circular, distance between the annulus both ends of the surface is provided with boss (6) greater than reference pads (4) thickness in the middle part of the endoporus of annulus, and the minimum diameter that boss (6) is located is greater than bolt (1) external diameter.
9. the power of deciding assembly according to claim 6, it is characterized in that: more than the internal diameter 2mm of the maximum outside diameter of described force bearing ring (3) less than reference pads (4), the external diameter of reference pads (4) is identical with the external diameter of plain cushion (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103317062A CN103089791A (en) | 2011-10-27 | 2011-10-27 | Simple method for ensuring connection preload of bolt and component for simple method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103317062A CN103089791A (en) | 2011-10-27 | 2011-10-27 | Simple method for ensuring connection preload of bolt and component for simple method |
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| CN103089791A true CN103089791A (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103317062A Pending CN103089791A (en) | 2011-10-27 | 2011-10-27 | Simple method for ensuring connection preload of bolt and component for simple method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513386A (en) * | 2019-08-27 | 2019-11-29 | 航天精工股份有限公司 | A kind of pretightning force instruction washer and its application method |
| CN111637130A (en) * | 2020-06-12 | 2020-09-08 | 贵州航天精工制造有限公司 | Split combined type rivet nut connecting method and structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3316290A1 (en) * | 1983-05-04 | 1984-11-08 | Hilti Ag, Schaan | Measuring device for the clamping force in fastening elements |
| DE4416766A1 (en) * | 1993-07-25 | 1995-02-23 | Berwald Werner | Tensioning washer with upset bodies and optical indication |
| CN101099047A (en) * | 2005-01-11 | 2008-01-02 | 都美工业株式会社 | Axial force controlling nut assembly |
-
2011
- 2011-10-27 CN CN2011103317062A patent/CN103089791A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3316290A1 (en) * | 1983-05-04 | 1984-11-08 | Hilti Ag, Schaan | Measuring device for the clamping force in fastening elements |
| DE4416766A1 (en) * | 1993-07-25 | 1995-02-23 | Berwald Werner | Tensioning washer with upset bodies and optical indication |
| CN101099047A (en) * | 2005-01-11 | 2008-01-02 | 都美工业株式会社 | Axial force controlling nut assembly |
Non-Patent Citations (1)
| Title |
|---|
| 任仁良: "《涡轮发动机结构与系统ME－TA上册》", 30 November 2006, 兵器工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513386A (en) * | 2019-08-27 | 2019-11-29 | 航天精工股份有限公司 | A kind of pretightning force instruction washer and its application method |
| CN111637130A (en) * | 2020-06-12 | 2020-09-08 | 贵州航天精工制造有限公司 | Split combined type rivet nut connecting method and structure |
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Application publication date: 20130508 |