CN106122234A - A kind of locking measure of studs and installation method - Google Patents
A kind of locking measure of studs and installation method Download PDFInfo
- Publication number
- CN106122234A CN106122234A CN201610432234.2A CN201610432234A CN106122234A CN 106122234 A CN106122234 A CN 106122234A CN 201610432234 A CN201610432234 A CN 201610432234A CN 106122234 A CN106122234 A CN 106122234A
- Authority
- CN
- China
- Prior art keywords
- thread segment
- thin
- studs
- steel ball
- walled
- 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.)
- Pending
Links
- 238000009434 installation Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 230000000694 effects Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000009466 transformation Effects 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
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
- F16B35/044—Specially-shaped ends
Abstract
The present invention relates to a kind of locking measure of studs and installation method, in order to solve the problem that the parts such as band turbocharger engine, exhaust manifold cause gas leakage because the studs installed loosens, including having the double threaded screw body of the first thread segment and the second thread segment, steel ball, it is characterized in that the middle part of double threaded screw body is provided with cross section is orthohexagonal middle wrench body, first thread segment outer end is provided with end wrench body, second thread segment outer end is provided with shrinkage pool, is made up of thin-walled body shrinkage pool；During installation, first steel ball is put into the screw-threaded counterbore coordinated with the second thread segment, then the second thread segment is screwed in wherein, make the external support of thin-walled expand on the horizontal thread counterbore wall at place by the effect of steel ball.Prevent the modal vibration of enmgine exhaust and expand with heat and contract with cold, the vibration of external applied load, change, a series of loosening phenomenons causing exhaust manifold of material at high temperature creep etc., improve work efficiency.
Description
Technical field
The present invention relates to Trend of Auto Manufacturing Technologies field, especially a kind of locking measure of studs and installation method.
Background technology
Studs is a kind of conventional object in product manufacturing and the mode being connected between object, and automobile assembling is no exception, and bolt is in assembling uses, and anti-loosening retaining is one of technical research object.In prior art, the structures and methods about stud locking also compare many, it is by external latch mostly, the accessories such as locking nut carry out locking, if patent publication No. is CN102829062A, disclosed a kind of bolt-locking anti-loosening device, the end of bolt passes from assembly parts, and locking nut it is set with in the end of bolt, the endoporus of locking nut is divided into screw section and taper hole section, wherein screw section coordinates with bolt thread, locking bed it is provided with between locking nut and assembly parts, locking bed is integrally formed by tapered sleeve and dish seat, this by the cone match between locking nut and locking bed, produce deformed threads, realize locking.And for example patent announcement number is a kind of torque spanner bolt locking pad of CN201235520U, torque spanner is for connecing with a torsion setting device group, fix fixing seat by lock washer and adjust bolt, making the action between adjustment bolt and torsion adjusting lever really and be difficult to get loose.For another example patent announcement number is the studs locking plate that CN104132069A mono-kind relates to mechanical attachment field, comprises internal ring, outer shroud, studs and nut；The outer surface of internal ring is provided with the two-stage conical surface, and the inner surface of outer shroud is corresponding with the outer surface of internal ring to coincide, and internal ring and outer shroud are connected by multiple studs, and the connection that studs correspondence is positioned at outside internal ring flange face has supporting pad and nut.
Automobile engine installs exhaust manifold and the connecting portion of other parts at present, it is substantially all employing GB class stud to be attached, it is easy to assembling during batch production, when mounted, use socket wrench specially adapted for it+pneumatic tool more, first studs is loaded in socket wrench specially adapted for it, alignment stud installing hole is installed the most again, open air tool reversion after putting in place and exit special sleeve tool for same, while exiting pneumatic tool reversion, can be rotated toward the direction unclamped by studs, that has virtually cut down studs tightens torsion.This bolt and installation method also exist obvious shortcoming: if studs middle part is polished rod structure, and assembling studs can only lean on air tool frock to tighten frictional force and assemble, and it is little to tighten torsion；Studs does not has locking setting, tightens torsion and only ensures by the coefficient of friction between screw thread；Installing complexity, pneumatic tool needs positive decommuntation operation just can complete to install, inefficiency；The positive decommuntation of pneumatic tool is frequent, causes tool wear serious；More seriously studs is easy to loosen, and causes exhaust manifold poorly sealed, directly results in waste gas and arranges to air, polluting, because the EGT of exhaust manifold is higher, reach 500-800 DEG C, if directly running in engine nacelle, easily causing baked wheaten cake car.
Summary of the invention
The invention aims to solve the problem that the parts such as band turbocharger engine, exhaust manifold cause gas leakage because the studs installed loosens, a kind of locking measure of studs rational in infrastructure, easy for installation and installation method are provided, to improve the sealing of band turbocharger engine exhaust manifold, the installation of dissimilar engine exhaust system, either natural aspiration or the electromotor of turbocharging form is met while meet the requirement of environmental protection.
The above-mentioned technical problem of the present invention is mainly addressed by following technical proposals: a kind of locking measure of studs and installation method, including having the double threaded screw body of the first thread segment and the second thread segment, steel ball, it is characterized in that the middle part of described double threaded screw body is provided with cross section is orthohexagonal middle wrench body, first thread segment outer end is provided with end wrench body, second thread segment outer end is provided with shrinkage pool, is made up of thin-walled body shrinkage pool；During installation, first steel ball is put into the screw-threaded counterbore coordinated with the second thread segment, then the second thread segment is screwed in wherein, make the external support of thin-walled expand on the horizontal thread counterbore wall at place by the effect of steel ball.
The technical program is designed especially for automobile engine theme, because the electromotor of band turbocharger is higher than the delivery temperature of common naturally aspirated engine and modal vibration is also strong, and the reason that exhaust manifold installation studs loosens mainly is expanded with heat and contract with cold and is caused, during engine long after time operation, the studs of exhaust manifold is installed, cylinder head screwed hole, exhaust manifold gasket and exhaust manifold etc. are all expanded with heat and contract with cold and are produced different changes, add external applied load and have vibration, change, material at high temperature creep etc. can cause frictional force to reduce, in screw thread pair, normal pressure is at a certain pop-off, frictional force is to zero, so that thread connection loosens.This programme utilizes middle wrench body that double threaded screw body carries out one end fastening and makes power, the most first installs the second thread segment, and this end is because being provided with thin-walled body, the most naturally expand, thoroughly lock onto in screw-threaded counterbore so that double threaded screw is known under the effect of steel ball.
As preferably, the diameter of described steel ball is less than the screw-threaded counterbore internal diameter coordinated with the second thread segment, and steel ball size is more than the internal diameter at thin-walled body shrinkage pool position.When thin-walled body bead location contacts is to steel ball, its inwall end is extruded by steel ball, the most outwards deforms, and the qualitative of each size is suitable for whole deformation process.
As preferably, described when using spanner or sleeve to tighten double threaded screw body, when studs body is rotated down, when its thin-walled body opening meets steel ball, continue backspin, make thin-walled body naturally expand outwardly.During use, when thin-walled body expands outwardly and continue backspin naturally until double threaded screw is only tightened.
As preferably, described thin-walled body diameter is less than the core diameter of thread of the second thread segment, and the length of thin-walled body is less than 1/3rd of thin-walled body diameter.Reasonably thin-walled body diameter and length are the guarantees of double threaded screw and screw-threaded counterbore locking.
As preferably, the maximum outside diameter of described end wrench body is smaller in size than the core diameter of thread of the first thread segment.Meet double threaded screw job requirement.
The invention have effective effect that: prevent the modal vibration of enmgine exhaust, engine luggine and expand with heat and contract with cold, the vibration of external applied load, change, a series of loosening phenomenons causing exhaust manifold of material at high temperature creep etc.；The enmgine exhaust sealing effectiveness making band turbocharger is more secure, has directly stopped waste gas and has arranged to the Nature, and the air pollution caused；It is no longer necessary to the carrying out assembling studs of the positive decommuntation of pneumatic tool, only needs the conventional tool such as sleeve or spanner directly to extract after tightening and assemble, substantially increase work efficiency；Reduce pneumatic tool positive decommuntation amount, extend pneumatic tool service life, reduce the cost manufacturing electromotor；The high-temp waste gas avoiding exhaust manifold leaks in engine nacelle, reduces and burns car accident.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is that a kind of of the present invention installs SBR structural representation.
Fig. 3 be the present invention a kind of assembling after status architecture schematic diagram.
In figure: 1. end wrench body, 2. the first thread segment, middle wrench body, 4. the second thread segment, 5. thin-walled body, 6. steel ball, 7. screw-threaded counterbore.
Detailed description of the invention
Below by embodiment, and combine accompanying drawing, technical scheme is described in further detail.
Seeing Fig. 1, the locking measure of the present embodiment one studs and installation method, its subject component has two pieces: i.e. have the first thread segment 2 and the double threaded screw body of the second thread segment 4, steel ball 6.
Wherein, the middle part of double threaded screw body be cross section be orthohexagonal middle wrench body 3, first thread segment 2 outer end is provided with maximum outside diameter and is smaller in size than the end wrench body 1 in footpath at the bottom of thread segment, and constitutes thin-walled body 5 in the second thread segment 4 outer end by shrinkage pool structure；The external diameter of thin-walled body 5 is less than the core diameter of thread of the second thread segment 4, and the length of thin-walled body 5 is equal to 1/4th of thin-walled body diameter.Steel ball 6 dimensional requirement is: diameter and screw-threaded counterbore 7 internal diameter matched in clearance, and more than the internal diameter at thin-walled body 5 shrinkage pool position.
During installation, steel ball 6 is put into and screw-threaded counterbore 7 bottom, again the second thread segment 4 is screwed in wherein, common spanner or sleeve is used to screw double threaded screw body, when the second thread segment 4 is rotated down, when its thin-walled body 5 opening runs into steel ball 6, continue backspin, make thin-walled body naturally expand outwardly until tighten, make the outer support of thin-walled body 4 expand into residing screw-threaded counterbore 7 transverse wall position from there through the effect of steel ball 6 and reach locking.
Above-described embodiment is the description of the invention, is not limitation of the invention, and structure, technique after any simple transformation to the present invention belong to protection scope of the present invention.
Claims (5)
1. the locking measure of studs and installation method, including having the first thread segment (2) and the double threaded screw body of the second thread segment (4), steel ball (6), it is characterized in that the middle part of described double threaded screw body is provided with cross section is orthohexagonal middle wrench body (3), first thread segment outer end is provided with end wrench body (1), second thread segment outer end is provided with shrinkage pool, is made up of thin-walled body (5) shrinkage pool；During installation, first steel ball is put into the screw-threaded counterbore coordinated with the second thread segment, then the second thread segment is screwed in wherein, make the external support of thin-walled expand on the horizontal thread counterbore wall at place by the effect of steel ball.
The locking measure of studs the most according to claim 1 and installation method, it is characterised in that the diameter of described steel ball (6) is less than screw-threaded counterbore (7) internal diameter coordinated with the second thread segment, and steel ball size is more than the internal diameter at thin-walled body (5) shrinkage pool position.
The locking measure of studs the most according to claim 1 and 2 and installation method, it is characterized in that when using spanner or sleeve to tighten double threaded screw body, when studs body is rotated down, when its thin-walled body (5) opening meets steel ball (6), continue backspin, make thin-walled body naturally expand outwardly.
The locking measure of studs the most according to claim 1 and 2 and installation method, it is characterised in that described thin-walled body (5) external diameter is less than the core diameter of thread of the second thread segment (4), and the length of thin-walled body is less than 1/3rd of thin-walled body diameter.
The locking measure of studs the most according to claim 1 and 2 and installation method, it is characterised in that the maximum outside diameter of described end wrench body (1) is smaller in size than the core diameter of thread of the first thread segment (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610432234.2A CN106122234A (en) | 2016-06-17 | 2016-06-17 | A kind of locking measure of studs and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610432234.2A CN106122234A (en) | 2016-06-17 | 2016-06-17 | A kind of locking measure of studs and installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106122234A true CN106122234A (en) | 2016-11-16 |
Family
ID=57470522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610432234.2A Pending CN106122234A (en) | 2016-06-17 | 2016-06-17 | A kind of locking measure of studs and installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106122234A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246824A (en) * | 2018-03-16 | 2018-07-06 | 中车株洲电机有限公司 | A kind of locking anti-drop device of double threaded screw |
| CN110005682A (en) * | 2019-05-06 | 2019-07-12 | 广西玉柴机器股份有限公司 | A kind of Anti-loose bolt component |
| CN111720412A (en) * | 2020-05-29 | 2020-09-29 | 江苏永昊高强度螺栓有限公司 | Special-shaped bolt and nut assembly |
| CN113685418A (en) * | 2021-09-02 | 2021-11-23 | 浙江盛世瑞金紧固件股份有限公司 | Anti-vibration fastening bolt for automobile engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2770276A (en) * | 1952-04-17 | 1956-11-13 | Broder Reuben | Set screw with ball expander locking means |
| FR2310493A1 (en) * | 1975-05-09 | 1976-12-03 | Brondeur Fernand | Cap nut with internal locking arrangement - has ball between inside face and splayed end of screw |
| EP0661464A1 (en) * | 1993-12-24 | 1995-07-05 | PAGUAG GmbH & Co. | Fastening element |
| CN202883626U (en) * | 2012-07-05 | 2013-04-17 | 苏州宝强精密螺丝有限公司 | Double-threaded screw |
| CN105065418A (en) * | 2015-09-02 | 2015-11-18 | 徐州工业职业技术学院 | Fastening screw device of vernier measuring tool |
| CN105605065A (en) * | 2016-02-19 | 2016-05-25 | 扬州光鸿钢构金属实业有限公司 | Double-end screwing bolt |
-
2016
- 2016-06-17 CN CN201610432234.2A patent/CN106122234A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2770276A (en) * | 1952-04-17 | 1956-11-13 | Broder Reuben | Set screw with ball expander locking means |
| FR2310493A1 (en) * | 1975-05-09 | 1976-12-03 | Brondeur Fernand | Cap nut with internal locking arrangement - has ball between inside face and splayed end of screw |
| EP0661464A1 (en) * | 1993-12-24 | 1995-07-05 | PAGUAG GmbH & Co. | Fastening element |
| CN202883626U (en) * | 2012-07-05 | 2013-04-17 | 苏州宝强精密螺丝有限公司 | Double-threaded screw |
| CN105065418A (en) * | 2015-09-02 | 2015-11-18 | 徐州工业职业技术学院 | Fastening screw device of vernier measuring tool |
| CN105605065A (en) * | 2016-02-19 | 2016-05-25 | 扬州光鸿钢构金属实业有限公司 | Double-end screwing bolt |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246824A (en) * | 2018-03-16 | 2018-07-06 | 中车株洲电机有限公司 | A kind of locking anti-drop device of double threaded screw |
| CN108246824B (en) * | 2018-03-16 | 2023-11-03 | 中车株洲电机有限公司 | Anti-loosening device for double-headed screw |
| CN110005682A (en) * | 2019-05-06 | 2019-07-12 | 广西玉柴机器股份有限公司 | A kind of Anti-loose bolt component |
| CN111720412A (en) * | 2020-05-29 | 2020-09-29 | 江苏永昊高强度螺栓有限公司 | Special-shaped bolt and nut assembly |
| CN111720412B (en) * | 2020-05-29 | 2021-09-10 | 江苏永昊高强度螺栓有限公司 | Special-shaped bolt and nut assembly |
| CN113685418A (en) * | 2021-09-02 | 2021-11-23 | 浙江盛世瑞金紧固件股份有限公司 | Anti-vibration fastening bolt for automobile engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106122234A (en) | A kind of locking measure of studs and installation method | |
| CN100443746C (en) | Quick fastening nut | |
| CN103089779B (en) | Honeycomb thread-repairing connecting component with controllable preload and usage thereof | |
| CN102852952B (en) | Thread positioning locking mechanism and mounting method | |
| CN113513650A (en) | Construction method of heating and ventilation pipeline with large compensation amount | |
| CN208853546U (en) | A kind of automotive muffler inner assembly oncus mold | |
| CN201891496U (en) | Oil inlet pipe fixing structure of pressure booster | |
| CN205101367U (en) | Thread connection locking device and have its gas turbine rotor fastener | |
| CN208281340U (en) | A kind of connection fastener | |
| CN203532475U (en) | Nut of grooving anti-loose bolt and nut fastening connection device | |
| CN209818497U (en) | Flange surface self-locking bolt | |
| CN203322001U (en) | Locating bolt | |
| CN205298218U (en) | Pressure formula locknut device is spared to elasticity | |
| CN214466778U (en) | Pipe joint for adjusting horizontal state of valve | |
| CN210196701U (en) | Pipeline union convenient to fasten and fastening device | |
| CN203297282U (en) | Eccentric type self-locking nut | |
| CN202782470U (en) | Fixing device for automobile wheel cover | |
| CN219452666U (en) | High-temperature-resistant long-service-life lock nut for engine | |
| CN106122229A (en) | A kind of flange nut washer combination | |
| CN202883311U (en) | Thread type differential piston connecting structure | |
| CN211517313U (en) | Small-space dismounting test fixture deep-hole sleeve | |
| CN212250207U (en) | Exhaust manifold mounting structure | |
| CN220816228U (en) | Bolt locking device suitable for under strong vibration operating mode | |
| CN216199697U (en) | Anti-loose nut | |
| CN218953773U (en) | Waist-shaped nut, waist-shaped locknut combination and locking structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161116 |
|
| RJ01 | Rejection of invention patent application after publication |