CN104565595A - Flexible tube - Google Patents
Flexible tube Download PDFInfo
- Publication number
- CN104565595A CN104565595A CN201510041773.9A CN201510041773A CN104565595A CN 104565595 A CN104565595 A CN 104565595A CN 201510041773 A CN201510041773 A CN 201510041773A CN 104565595 A CN104565595 A CN 104565595A
- Authority
- CN
- China
- Prior art keywords
- joint
- link
- connector
- flexible tube
- sphere
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 230000000452 restraining effect Effects 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008646 thermal stress 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
- F16L11/18—Articulated hoses, e.g. composed of a series of rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention discloses a flexible tube comprising a first tube body and a second tube body. The first tube body is connected with a first connecting piece, the second tube body is connected with a second connecting piece, both the first connecting piece and the second connecting piece are tubular rotators, a first connector is arranged on the first tube body, the first connecting piece comprises a second connector and a third connector, the second connecting piece comprises a fourth connector and a fifth connector, the second tube body comprises a sixth connector, both the first connector and the second connector are local spheroidal with the same sphere center, the first connector and the second connector are in clearance fit, the first connector and the second connector can rotate relatively around the sphere center, and a limiter is arranged on each of the first connector and the second connector; the third connector and the fourth connector are slidably mounted together along the axis and are in interference fit; the connecting structure of the fifth connector and the sixth connector is identical to the connecting structure of the first connector and the second connector. Thus, optimum sealing effect and durability in use can be obtained with simple structure.
Description
Technical field
The present invention relates to commercial car vent systems pipeline and flexibly connect technical field, relate to a kind of flexible tube specifically.
Background technique
Commercial car vehicle exhaust system generally comprises exhaust elbow, exhaust braking valve, exhaust supervisor, reprocessing case, baffler and the several part of tail pipe supercharger outlet on the engine from installing.The connection of this few part needs realizing under basic sealing function prerequisite, meets following three conditions: the first, because aforementioned each several part fixed reference is motor and chassis frame respectively, therefore needs compliant member to compensate and eliminates erection stress; The second, the delivery temperature entering vent systems during automobilism reaches as high as more than 700 DEG C, and compliant member need be had to eliminate each parts due to the thermal stress formed of expanding with heat and contract with cold; 3rd, the complex vibration formed by machinery, air-flow during automobilism easily causes the fatigue damage of each parts, needs compliant member slowing down vibration.The compliant member realizing above-mentioned functions is called flexible tube.Suppose that flexible tube connects between the two elements, one end of flexible tube is fixing, then the needs of the other end move in certain three dimensional space, this just needs flexible tube to possess flexible and crooking ability simultaneously, flexible tube compensation ability is larger, allow the sphere of activities of end larger, its performance is better.
Early stage flexible tube adopts the bellows of stainless steel material, usually adopts the Stainless pipe billet of 0.3-0.6mm wall thickness to make.Its advantage is that sealability is better, but obtain flexible or bending owing to all relying on the resiliently deformable of material, its compensation ability is limited, and easily form stress, at reduction metal fatigue, bear Shortcomings on the many indexs such as circumferential shearing load, and its inwall is convex-concave profile, air-flow in pipe also can be made to form turbulent flow and to strengthen noise and vibration.
Internal fastening type metallic hose technology at present from Germany becomes mainstream technology scheme, it is flexible and bending is combined by the resiliently deformable of the mutual slip between several S type snap closes and local, therefore better extensibility and flexibility is had, at reduction metal fatigue, the aspects such as raising compensation ability comparatively bellows improve a lot.Each S type snap close deposits two sealing control points, and flexible tube is longer, and compensation ability is higher, but sealability is poorer.For the long flexible tube of 300mm, sealing control point reaches more than 40 places.With latus rectum 100mm, length is the flexible tube of 300mm is example, and the leakage rate under 0.15bar air pressure is about 70-80L/min.This technological scheme, in updating, participates in sliding as increased one deck steel band again in the joint of two S type snap closes, leakage rate can reduce about 40%; But cause structure more complicated, manufacture cost also improves and under equal conditions, leakage rate still has about 30L/min.Moreover, this structure adopts 0.15-0.25mm Stainless Steel Band to make, and because material is thinner, also there is the defect of strength deficiency.
Summary of the invention
Technical problem to be solved by this invention is: provide the flexible tube that a kind of structure is simple, working strength strengthens, leakage rate is low.
For solving the problems of the technologies described above, technological scheme of the present invention is: a kind of flexible tube, comprise the first body and the second body, described first body is connected with the first link, described second body is connected with the second link, together with described first link is slidably installed with the second link, described first link and the second link are the solid of rotation of tubulose, described first body is provided with the first joint, described first link comprises the second joint and the 3rd joint, described second link comprises the 4th joint and the 5th joint, described second body comprises the 6th joint, described first joint and the second joint sealing link together, described 3rd joint and the 4th joint sealing link together, described 5th joint and the 6th joint sealing link together,
Described first joint and the second joint are the local ball-type of the same centre of sphere, the internal surface of described first joint and the outer surface Spielpassung of described second joint, described first joint and the second joint can relatively rotate around their centre of sphere, and described first joint and described second joint are provided with the limit stoper limiting their slewing areas;
Described 3rd joint and the 4th joint are installed together along axial sliding movement, and described 3rd joints sleeve is outer at described 4th joint, and described 3rd joint coordinates with described 4th play movement;
Described 5th joint is identical with the linkage structure of the second joint with described first joint with the linkage structure of the 6th joint.
Owing to have employed technique scheme, first body and the second body are for being connected to the different parts of vent systems, first body is connected with the second link by the first link with the second body, therefore the parts of whole flexible tube needs are less, can be comparatively simple on manufacturing, cost is lower.First joint and the second joint can rotate relative to their centre of sphere, 5th joint and the 6th joint also can rotate relative to their centre of sphere, the change in flexible tube radial direction is met with this, 3rd joint and the 4th joint can relative to axial sliding movement, the change of axial distance is met with this, thus constitute the degrees of freedom in all directions of flexible tube needs, only need the first link and the second link two parts, just can meet the demand of flexible tube to degrees of freedom completely; At seal aspect, the place of sealing is needed to only have three places, the first joint and the second joint, the 3rd joint and the 4th joint, the 5th joint and the 6th joint respectively, sealing place all adopts clearance seal, therefore integral sealing effect is better, and the leakage rate of gas is less, and due to above-mentioned linkage structure, the material manufacture that first body, the first link, the second link and the second body can use wall thickness thicker, thus can working strength be improved.
As a kind of preferred version, described limit stoper comprises the restraining groove be arranged on described second joint and the limited part be arranged on described first joint, described limited part stretches in described restraining groove, forms seal space between the wall of described first joint and the groove of described second joint.Restraining groove except play a part spacing except, can also make to form seal space between the first joint and the second joint, strengthen the sealing effect of the first joint and the second joint.
As a kind of preferred version, the bottom of described restraining groove is sphere, and the bottom of described limited part is sphere, and the bottom gap of described restraining groove and limited part coordinates, and is coordinated, improve sealing effect further by the bottom of limited part and the bottom gap of restraining groove.
As a kind of preferred version, described limited part is provided with two, is spaced a distance between two described limited parts, can form the structure that multiple seal space and multiple sealing surface replace, improve sealing effect further by two limited parts.
As a kind of preferred version, described 3rd joint and the 4th joint are cylindrical tube, described 3rd joint is plugged in described 4th joint, described 3rd joint coordinates with the 4th play movement, the port of described 3rd joint is provided with the abjunction preventing part for preventing described 3rd joint and the 4th joint from departing from, the structure that 3rd joint and joint can be slidably connected can increase the axial length of flexible tube, and the 3rd joint and the 4th joint only have change axially, good sealing effect.
As a kind of preferred version, described 3rd joint is provided with one section of corrugated pipe segment, and described corrugated pipe segment coordinates with described 4th play movement, by being provided with one section of corrugated pipe segment at the 3rd joint, can improve the sealing effect of the 3rd joint and the 4th joint.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structure sectional view of the embodiment of the present invention;
In figure: 1, the first body; 101, first joint; 102, restraining groove; 2, second body; 201, six joint; 3, first link; 301, second joint; 302, limited part; 303, three joint; 4, second link; 401, four joint; 402, five joint; 403, corrugated pipe segment.
Embodiment
As shown in Figure 1, a kind of flexible tube, comprise the first body 1 and the second body 2, described first body 1 is connected with the first link 3, described second body 2 is connected with the second link 4, together with described first link 3 is slidably installed with the second link 4, described first link 3 and the second link 4 are the solid of rotation of tubulose, described first body 1 is provided with the first joint 101, described first link 3 comprises the second joint 301 and the 3rd joint 303, described second link 4 comprises the 4th joint 401 and the 5th joint 402, described second body 2 comprises the 6th joint 201, described first joint 101 and the second joint 301 are sealed connected together, described 3rd joint 303 and the 4th joint 401 are sealed connected together, described 5th joint 402 and the 6th joint 201 are sealed connected together,
Described first joint 101 and the second joint 301 are the local ball-type of the same centre of sphere, the internal surface of described first joint 101 and the outer surface Spielpassung of described second joint 301, described first joint 101 and the second joint 301 can relatively rotate around their centre of sphere, and described first joint 101 and described second joint 301 are provided with the limit stoper limiting their slewing areas;
As a kind of better embodiment, described limit stoper comprises the restraining groove 102 be arranged on described second joint 301 and the limited part 302 be arranged on described first joint 101, described limited part 302 stretches in described restraining groove 102, a seal space is formed between the wall of described first joint 101 and the groove of described second joint 301, in order to improve sealability, the bottom of described restraining groove 102 is spheres, the bottom of described limited part 302 is spheres, the bottom gap of described restraining groove 102 and limited part 302 coordinates, described limited part 302 is provided with two, be spaced a distance between two described limited parts 302, groove can be divided into three relatively independent seal spacies thus, the joint that sealing surface and seal space replace is formed between first joint 101 and the second joint 301, thus improve sealing effect.
Described 3rd joint 303 and the 4th joint 401 are installed together along axial sliding movement, it is outer that described 3rd joint 303 is enclosed within described 4th joint 401, described 3rd joint 303 and described 4th joint 401 Spielpassung, as a kind of better embodiment, described 3rd joint 303 and the 4th joint 401 are cylindrical tube, described 3rd joint 303 is plugged in described 4th joint 401, described 3rd joint 303 and the 4th joint 401 Spielpassung, the port of described 3rd joint 303 is provided with the abjunction preventing part for preventing described 3rd joint 303 and the 4th joint 401 from departing from, for improving sealing effect further, described 3rd joint 303 is provided with one section of corrugated pipe segment 403, described corrugated pipe segment 403 and described 4th joint 401 Spielpassung,
Described 5th joint 402 is identical with the linkage structure of the second joint 301 with described first joint 101 with the linkage structure of the 6th joint 201.
During use, first joint 101 and the second joint 301 are rotary, 3rd joint 303 and the 4th joint 401 can only relative slidings in the axial direction, 5th joint 402 and the 6th joint 201 are also rotary, therefore this flexible tube can bend by S type, there is splendid flexibility, and the adaptive capacity to environment.
Said structure is one of the present invention preferably mode of execution, and the present invention is not limited to above-mentioned mode of execution, and such as, the quantity of limited part 302 can only have one, to facilitate manufacture.The first link 3 in the present invention alternately can also be connected several with the second link 4, its flexible meeting improves further, but quantity of gas leakage also can increase, in commercial car vehicle exhaust system, the first link 3 and the second link 4 needs one, be just enough to the degrees of freedom providing flexible tube needs.The structure of the first joint 101 and the second joint 301 can be exchanged.The present invention also has some other common alteration, does not repeat one by one at this, and every those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, done all conversion, all drop within protection scope of the present invention.
Claims (6)
1. flexible tube, comprise the first body and the second body, described first body is connected with the first link, described second body is connected with the second link, together with described first link is slidably installed with the second link, described first link and the second link are the solid of rotation of tubulose, it is characterized in that: described first body is provided with the first joint, described first link comprises the second joint and the 3rd joint, described second link comprises the 4th joint and the 5th joint, described second body comprises the 6th joint, described first joint and the second joint sealing link together, described 3rd joint and the 4th joint sealing link together, described 5th joint and the 6th joint sealing link together,
Described first joint and the second joint are the local ball-type of the same centre of sphere, the internal surface of described first joint and the outer surface Spielpassung of described second joint, described first joint and the second joint can relatively rotate around their centre of sphere, and described first joint and described second joint are provided with the limit stoper limiting their slewing areas;
Described 3rd joint and the 4th joint are installed together along axial sliding movement, and described 3rd joints sleeve is outer at described 4th joint, and described 3rd joint coordinates with described 4th play movement;
Described 5th joint is identical with the linkage structure of the second joint with described first joint with the linkage structure of the 6th joint.
2. flexible tube as claimed in claim 1, it is characterized in that: described limit stoper comprises the restraining groove be arranged on described second joint and the limited part be arranged on described first joint, described limited part stretches in described restraining groove, forms a seal space between the wall of described first joint and the groove of described second joint.
3. flexible tube as claimed in claim 2, it is characterized in that: the bottom of described restraining groove is sphere, the bottom of described limited part is sphere, and the bottom gap of described restraining groove and limited part coordinates.
4. flexible tube as claimed in claim 3, is characterized in that: described limited part is provided with two, is spaced a distance between two described limited parts.
5. flexible tube as claimed in claim 1, it is characterized in that: described 3rd joint and the 4th joint are cylindrical tube, described 3rd joint is plugged in described 4th joint, described 3rd joint coordinates with the 4th play movement, and the port of described 3rd joint is provided with the abjunction preventing part for preventing described 3rd joint and the 4th joint from departing from.
6. flexible tube as claimed in claim 1, it is characterized in that: described 3rd joint is provided with one section of corrugated pipe segment, described corrugated pipe segment coordinates with described 4th play movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510041773.9A CN104565595B (en) | 2015-01-27 | 2015-01-27 | Flexible pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510041773.9A CN104565595B (en) | 2015-01-27 | 2015-01-27 | Flexible pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104565595A true CN104565595A (en) | 2015-04-29 |
| CN104565595B CN104565595B (en) | 2016-10-05 |
Family
ID=53082332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510041773.9A Active CN104565595B (en) | 2015-01-27 | 2015-01-27 | Flexible pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104565595B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110789859A (en) * | 2019-11-04 | 2020-02-14 | 江苏威拉里新材料科技有限公司 | 3D prints production of metal powder and prevents stifled unloading hose with shale shaker |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1020699A (en) * | 1964-01-29 | 1966-02-23 | Siemag Siegener Masch Bau | A high-pressure pipe union |
| CN2223402Y (en) * | 1995-04-17 | 1996-03-27 | 徐昭彬 | Articulated hose |
| EP0870965A1 (en) * | 1997-04-08 | 1998-10-14 | Waterworks Technology Development Organization Co., Ltd. | Telescopic pivotal pipe joint |
| EP0965784A1 (en) * | 1998-06-15 | 1999-12-22 | Internova International Innovation Company B.V. | Protective cover for cables or conduits |
| EP1388700A1 (en) * | 2002-08-06 | 2004-02-11 | Reiku GmbH | Duct formed by a succession of articulated members |
| GB2413219A (en) * | 2004-04-13 | 2005-10-19 | Crp Group Ltd | A bend restrictor |
-
2015
- 2015-01-27 CN CN201510041773.9A patent/CN104565595B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1020699A (en) * | 1964-01-29 | 1966-02-23 | Siemag Siegener Masch Bau | A high-pressure pipe union |
| CN2223402Y (en) * | 1995-04-17 | 1996-03-27 | 徐昭彬 | Articulated hose |
| EP0870965A1 (en) * | 1997-04-08 | 1998-10-14 | Waterworks Technology Development Organization Co., Ltd. | Telescopic pivotal pipe joint |
| EP0965784A1 (en) * | 1998-06-15 | 1999-12-22 | Internova International Innovation Company B.V. | Protective cover for cables or conduits |
| EP1388700A1 (en) * | 2002-08-06 | 2004-02-11 | Reiku GmbH | Duct formed by a succession of articulated members |
| GB2413219A (en) * | 2004-04-13 | 2005-10-19 | Crp Group Ltd | A bend restrictor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110789859A (en) * | 2019-11-04 | 2020-02-14 | 江苏威拉里新材料科技有限公司 | 3D prints production of metal powder and prevents stifled unloading hose with shale shaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104565595B (en) | 2016-10-05 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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