CN106151235B - A kind of gas extraction system installs nut - Google Patents
A kind of gas extraction system installs nut Download PDFInfo
- Publication number
- CN106151235B CN106151235B CN201610432235.7A CN201610432235A CN106151235B CN 106151235 B CN106151235 B CN 106151235B CN 201610432235 A CN201610432235 A CN 201610432235A CN 106151235 B CN106151235 B CN 106151235B
- Authority
- CN
- China
- Prior art keywords
- hole
- locking end
- internal thread
- buffering
- extraction system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000605 extraction Methods 0.000 title claims abstract description 14
- 230000003139 buffering effect Effects 0.000 claims abstract description 36
- 238000009434 installation Methods 0.000 claims abstract description 32
- 125000006850 spacer group Chemical group 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a kind of gas extraction system to install nut, buffering end including locking end and below locking end, with locking end integrative-structure, described locking end is provided with internal thread hole, the through hole connected with internal thread hole is provided with inside the buffering end, the lateral surface at the buffering end, which is provided with, tightens portion and compressed part, the pressed parts are below portion of tightening, the lateral surface at the locking end is rounded, described lateral surface is provided with the extruding groove around locking end axisymmetrical arrangement, and shape is oval after the extruding of the internal thread hole.The present invention is intended to provide a kind of prevent from loosening, improve the gas extraction system installation nut with turbocharger engine exhaust manifold sealing.
Description
Technical field
The invention belongs to automobile exhaust system to assemble field, more particularly to a kind of gas extraction system installation nut.
Background technology
As Abgasgesetz is more and more stricter, the engine with turbocharger is also increasingly widespread.Engine and row at present
Mainly used on studs between gas manifold and be arranged collet and exhaust manifold gasket, and be fixed by nut.However,
Because band turbocharger engine is higher than common naturally aspirated engine delivery temperature and modal vibration is stronger, heat expansion is cold
Capacity reducing is easily caused exhaust manifold installation bolt component and loosened.After engine on time is longer, the double of exhaust manifold are installed
Header stud, nut, exhaust manifold gasket and exhaust manifold all receive the extruding under Warm status, with regard to nothing after engine cool
Method recovers tightening state, finally produces exhaust manifold installation bolt component and loosens and cause the appearance of exhaust manifold leakage problem.
Because exhaust manifold is poorly sealed, directly results in waste gas and arrange to the Nature, it is impossible to meet the requirement of environmental protection, while be also to burn car
Maximum hidden danger.
The content of the invention
The present invention be in order to overcome the shortcomings of in the prior art exhaust manifold because installation bolt component loosen cause gas leakage,
Providing a kind of prevent from loosening, improves the gas extraction system installation nut with turbocharger engine exhaust manifold sealing.
To achieve these goals, the present invention uses following technical scheme：
A kind of gas extraction system installs nut, including locking end and below locking end, with locking end integrative-structure
End is buffered, described locking end is provided with internal thread hole, and the through hole connected with internal thread hole is provided with inside the buffering end, described slow
The lateral surface for rushing end is provided with the portion and compressed part of tightening, and below portion of tightening, the lateral surface at the locking end is in the pressed parts
Circle, the lateral surface at the locking end are provided with the extruding groove around locking end axisymmetrical arrangement, and the internal thread hole squeezes
Shape is oval after pressure.Nut and bolt, which coordinate, is connected exhaust manifold with engine, by the portion of tightening by nut.Two
Side extrudes groove parallel extrusion, deforms after the internal thread stress of nut, and internal thread hole is in ellipse, to prevent between nuts and bolt
Trackslip.The lateral surface at locking end is rounded, realize both sides extruding stress it is more uniform, prevent internal thread stress deformation uneven and
The failure phenomenon of anti-loose structure is caused to occur.
Preferably, the inwall of the through hole becomes larger to form buffering suface from inside to outside, the lateral surface of the compressed part
Flare.After applying torsion and compressing, tubaeform compressed part stress will extend nut to the periphery, and heat occurs in exhaust manifold
, can effective deformation buffering during swollen shrinkage.
Preferably, the compressed part bottom surface is recessed by outward flange to inward flange towards internal thread hole direction forms installation contact
Face, rounding off between described installation contact surface and buffering suface.Before nut compresses with mounting surface, the installation contact surface of nut
Outward flange contacts with mounting surface, has gap between the installation contact surface inward flange and mounting surface of nut, after nut is tightened, spiral shell
Installation contact surface stress below mother, the gap between the installation contact surface inward flange and mounting surface of nut reduce, installation contact
Contact area between face outward flange and mounting surface becomes big.
Preferably, being provided with some auxiliary hold-down mechanisms being arranged symmetrically on the inside of described compressed part, hold-down mechanism is aided in
Including compact heap and the sliding pin that compact heap can be promoted to be moved to through hole axle center, the compressed part bottom surface is provided with to be slided with sliding pin
The dynamic pin-and-hole coordinated.By aiding in hold-down mechanism, in nut rundown process, the compressible bolt thread of compact heap, further carry
High anti-loosing effect.
Preferably, being provided with wedge-shaped slot in the middle part of the sliding pin, one end of compact heap is provided with the push rod to be offseted with wedge-shaped slot,
The other end of compact heap is provided with lock washer, and the surface of the lock washer is provided with continuously arranged sawtooth.Nut was compressing
Cheng Zhong, sliding pin is moved up by installation surface pressure, while promotes compact heap to be moved to bolt, and the sawtooth on lock washer can
Snap onto in screw thread, improve locking effect.
Preferably, described auxiliary hold-down mechanism also includes spacer pin, the push rod is provided with some with spacer pin phase
The spacing hole of cooperation, be provided with the buffering end and accommodate the pilot hole that spacer pin slides, in pilot hole provided with by spacer pin with pushing away
Bar carries out the spring of pretension, and the outside at described buffering end is provided with the hand switch that can depart from spacer pin and spacing hole.Pass through
Dial up hand switch and release spacer pin locking, smoothly back-outed nut with facilitating.
The beneficial effects of the invention are as follows：（1）Nut carries locking end, improves nut and mounting surface pretensioning effect, prevents from sending out
The modal vibration of motivation exhaust manifold, engine luggine and the problem of causing exhaust manifold to loosen of expanding with heat and contract with cold；（2）Nut band
There is buffering end, there is stress buffer structure, coordinate that locking end can effectively each parts expand with heat and contract with cold on buffering exhaust manifold
Problem on deformation；（3）With auxiliary hold-down mechanism, coordinate buffering end further improve locking effect between nut and bolt and
Damping effect between nut and bolt.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present invention；
Fig. 2 is the sectional view of the embodiment of the present invention 1；
Fig. 3 is the sectional view of the embodiment of the present invention 2；
Fig. 4 is the partial enlarged drawing at A in Fig. 3.
In figure：Locking end 1, groove 1a, internal thread hole 1b are extruded, buffer end 2, compressed part 2a, tighten portion 2b, contact surface is installed
201, through hole 202, buffering suface 203, spring 3, spacer pin 4, lock washer 5, compact heap 6, push rod 6a, spacing hole 6b, sliding pin
7, wedge-shaped slot 7a, hand switch 8.
Embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
Embodiment 1：
In embodiment as shown in Figure 1 and Figure 2, a kind of gas extraction system installs nut, including locking end 1 and buffering end 2, delays
Rush end to be located at below locking end, be structure as a whole with locking end.The lateral surface at locking end is rounded, realize both sides extruding stress compared with
To be uniform, prevent that internal thread stress deformation is uneven and causes the failure phenomenon of anti-loose structure to occur, it is qualified to improve batch micro operations
Rate.Locking end is provided with internal thread hole 1b, can carry out cooperation fixation with bolt.The lateral surface at locking end is provided with and surrounds locking end axle
The extruding groove 1a that line is arranged symmetrically, both sides extrude groove parallel extrusion, deformed after the internal thread stress of nut, and internal thread hole is in ellipse
Type, to prevent from trackslipping between nuts and bolt.
Buffering is provided with the through hole 202 connected with internal thread hole inside end, and the inwall of through hole becomes larger to be formed from inside to outside
Buffering suface 203, the buffering suface is tapered in the present embodiment, and the diameter at the top of buffering suface is slightly larger than the big footpath of internal thread hole, so as to
In the processing of internal thread, buffering suface top and internal thread hole end face rounding off, to improve transition position stress concentration.Buffer end
Lateral surface, which is provided with, tightens portion 2b and compressed part 2a, and the portion of tightening is used to conveniently be installed nut, in the present embodiment, tightens outside portion
Surface is outer-hexagonal face.Pressed parts are below portion of tightening, the lateral surface flare of compressed part so that tighten the wall thickness at portion
It is held essentially constant.Compressed part bottom surface is recessed by outward flange to inward flange towards internal thread hole direction forms installation contact surface 201, peace
Rounding off between attaching contacting surface and buffering suface, so as to reduce stress between installation contact surface and buffering suface.
In actual use, nuts and bolt coordinates when fixing engine and exhaust manifold, by the portion of tightening outside
The outer-hexagonal face of side is by nut, and before screwing, installation contact surface outward flange and the exhaust manifold mounting surface of nut connect
Touch, there is gap between the installation contact surface inward flange and mounting surface of nut, when in nut rundown process, the installation below nut
Contact surface stress, the gap between the installation contact surface inward flange and mounting surface of nut reduce, installation contact surface outward flange and peace
Contact area between dress face becomes big, while tubaeform compressed part stress will extend to the periphery, the heat that exhaust manifold occurs
Effective deformation buffer effect is played in swollen shrinkage.By extruding the extruding groove on both sides simultaneously, become after making the internal thread stress of nut
Shape, internal thread play anti-loose effect with the locking of bolt external screw thread.
Embodiment 2：
Embodiment with reference to shown in Fig. 1, Fig. 3, a kind of gas extraction system are installed nut, including locking end 1 and buffering end 2, delayed
Rush end to be located at below locking end, be structure as a whole with locking end.The lateral surface at locking end is rounded, realize both sides extruding stress compared with
To be uniform, prevent that internal thread stress deformation is uneven and causes the failure phenomenon of anti-loose structure to occur, it is qualified to improve batch micro operations
Rate.Locking end is provided with internal thread hole 1b, can carry out cooperation fixation with bolt.The lateral surface at locking end is provided with and surrounds locking end axle
The extruding groove 1a that line is arranged symmetrically, both sides extrude groove parallel extrusion, deformed after the internal thread stress of nut, and internal thread hole is in ellipse
Type, to prevent from trackslipping between nuts and bolt.
Buffering is provided with the through hole 202 connected with internal thread hole inside end, and the inwall of through hole becomes larger to be formed from inside to outside
Buffering suface 203, the buffering suface is tapered in the present embodiment, and the diameter at the top of buffering suface is slightly larger than the big footpath of internal thread hole, so as to
In the processing of internal thread, buffering suface top and internal thread hole end face rounding off, to improve transition position stress concentration.Buffer end
Lateral surface, which is provided with, tightens portion 2b and compressed part 2a, and the portion of tightening is used to conveniently be installed nut, in the present embodiment, tightens outside portion
Surface is outer-hexagonal face.Pressed parts are below portion of tightening, the lateral surface flare of compressed part so that tighten the wall thickness at portion
It is held essentially constant.Compressed part bottom surface is recessed by outward flange to inward flange towards internal thread hole direction forms installation contact surface 201, peace
Rounding off between attaching contacting surface and buffering suface, so as to reduce stress between installation contact surface and buffering suface.
Nuts and bolt coordinates when fixing engine and exhaust manifold, by tightening the outer-hexagonal face of portion's lateral surface by spiral shell
Mother screws, and before screwing, the installation contact surface outward flange of nut contacts with exhaust manifold mounting surface, the installation contact surface of nut
There is gap between inward flange and mounting surface, when in nut rundown process, the installation contact surface stress below nut, the peace of nut
Gap between attaching contacting surface inward flange and mounting surface reduces, and the contact area installed between contact surface outward flange and mounting surface becomes
Greatly, while tubaeform compressed part stress will extend to the periphery, and effective deformation is played in expanding with heat and contract with cold that exhaust manifold occurs
Cushioning effect.By extruding the extruding groove on both sides simultaneously, deformed after making the internal thread stress of nut, internal thread and bolt external screw thread
Anti-loose effect is played in locking.
With reference to shown in Fig. 3, Fig. 4, some auxiliary hold-down mechanisms being arranged symmetrically are provided with the inside of compressed part, aid in hold-down mechanism
Including compact heap 6 and the sliding pin 7 that compact heap can be promoted to be moved to through hole axle center, compressed part bottom surface is provided with to be slided with sliding pin
The pin-and-hole of cooperation.Wedge-shaped slot 7a is provided with the middle part of sliding pin, one end of compact heap is provided with the push rod 6a to be offseted with wedge-shaped slot, compact heap
The other end be provided with lock washer 5, the surface of lock washer is provided with continuously arranged sawtooth.Hold-down mechanism is aided in also to include spacing
Pin 4, push rod are provided with some spacing hole 6b being engaged with spacer pin, buffer the guiding for being provided with end and accommodating spacer pin slip
Hole, the spring 3 that spacer pin and push rod are carried out to pretension is provided with pilot hole, buffer end outside be provided with can by spacer pin with it is spacing
The hand switch 8 that hole departs from.
Claims (5)
1. a kind of gas extraction system installs nut, it is characterized in that, including locking end（1）And positioned at locking end（1）Lower section, with it is locking
End（1）The buffering end of integrative-structure（2）, described locking end（1）Provided with internal thread hole（1b）, the buffering end（2）Inside is set
Have and internal thread hole（1b）The through hole of connection（202）, the buffering end（2）Lateral surface be provided with tighten portion（2b）And compressed part
（2a）, the compressed part（2a）Positioned at the portion of tightening（2b）Lower section, the locking end（1）Lateral surface it is rounded, the locking end
（1）Lateral surface be provided with surround locking end（1）The extruding groove of axisymmetrical arrangement（1a）, the internal thread hole（1b）Extruding
Shape is oval afterwards, described compressed part（2a）Inner side is provided with some auxiliary hold-down mechanisms being arranged symmetrically, and aids in compacting machine
Structure includes compact heap（6）And compact heap can be promoted（6）To through hole（202）The sliding pin of axle center movement（7）, the compressed part
（2a）Bottom surface is provided with and sliding pin（7）The pin-and-hole being slidably matched.
2. a kind of gas extraction system installation nut according to claim 1, it is characterized in that, the through hole（202）Inwall by
Become larger to form buffering suface from inside to outside（203）, the compressed part（2a）Lateral surface flare.
3. a kind of gas extraction system installation nut according to claim 2, it is characterized in that, the compressed part（2a）Bottom surface is by outer
Edge is to inward flange towards internal thread hole（1b）Direction is recessed to form installation contact surface（201）, described installation contact surface（201）With
Buffering suface（203）Between rounding off.
4. a kind of gas extraction system installation nut according to claim 1, it is characterized in that, the sliding pin（7）Middle part is provided with
Wedge-shaped slot（7a）, compact heap（6）One end be provided with and wedge-shaped slot（7a）The push rod to offset（6a）, compact heap（6）The other end set
There is lock washer（5）, the lock washer（5）Surface be provided with continuously arranged sawtooth.
5. a kind of gas extraction system installation nut according to claim 4, it is characterized in that, described auxiliary hold-down mechanism also wraps
Include spacer pin（4）, the push rod（6a）It is provided with some and spacer pin（4）The spacing hole being engaged（6b）, the buffering end（2）
Interior be provided with accommodates spacer pin（4）The pilot hole of slip, pilot hole is interior to be provided with spacer pin（4）With push rod（6a）Carry out the bullet of pretension
Spring（3）, described buffering end（2）Outside be provided with can be by spacer pin（4）With spacing hole（6b）The hand switch of disengaging（8）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610432235.7A CN106151235B (en) | 2016-06-17 | 2016-06-17 | A kind of gas extraction system installs nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610432235.7A CN106151235B (en) | 2016-06-17 | 2016-06-17 | A kind of gas extraction system installs nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106151235A CN106151235A (en) | 2016-11-23 |
| CN106151235B true CN106151235B (en) | 2018-03-23 |
Family
ID=57353447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610432235.7A Active CN106151235B (en) | 2016-06-17 | 2016-06-17 | A kind of gas extraction system installs nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106151235B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102429002B1 (en) * | 2016-12-14 | 2022-08-03 | 현대자동차 주식회사 | Structure for mounting exhaust manifold to engine |
| CN108488203A (en) * | 2018-05-24 | 2018-09-04 | 海盐海博特机械有限公司 | It is a kind of disposably to tighten locking nut |
| CN109185316B (en) * | 2018-11-23 | 2020-08-04 | 航天精工股份有限公司 | Extrusion formula fluting lock nut subassembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2041135A (en) * | 1978-11-13 | 1980-09-03 | Microdot Inc | Self-locking nut |
| CN2534414Y (en) * | 2002-03-01 | 2003-02-05 | 皇崟实业股份有限公司 | Antiloosing nut |
| DE102011080505A1 (en) * | 2011-08-05 | 2013-02-07 | Arnold Umformtechnik Gmbh & Co. Kg | fastener |
| CN202811766U (en) * | 2012-10-12 | 2013-03-20 | 浙江曙光汽车标准件有限公司 | Hexagon fixing nut for driving gear |
| CN103899626A (en) * | 2014-04-14 | 2014-07-02 | 西安亚太航空技术有限公司 | Hexagonal surface self-locking nut |
-
2016
- 2016-06-17 CN CN201610432235.7A patent/CN106151235B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2041135A (en) * | 1978-11-13 | 1980-09-03 | Microdot Inc | Self-locking nut |
| CN2534414Y (en) * | 2002-03-01 | 2003-02-05 | 皇崟实业股份有限公司 | Antiloosing nut |
| DE102011080505A1 (en) * | 2011-08-05 | 2013-02-07 | Arnold Umformtechnik Gmbh & Co. Kg | fastener |
| CN202811766U (en) * | 2012-10-12 | 2013-03-20 | 浙江曙光汽车标准件有限公司 | Hexagon fixing nut for driving gear |
| CN103899626A (en) * | 2014-04-14 | 2014-07-02 | 西安亚太航空技术有限公司 | Hexagonal surface self-locking nut |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106151235A (en) | 2016-11-23 |
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Address after: 315800 No. 1528 Hengshan Road, Xintao Street, Beilun District, Ningbo City, Zhejiang Province Patentee after: Zhejiang Geely Power Assembly Co., Ltd. Address before: 315800 No. 1528 Hengshan Road, Xintao Street, Beilun District, Ningbo City, Zhejiang Province Patentee before: Zhejiang Geely Luoyou Engine Co., Ltd. |