CN105156806A - Hydraulic pipeline flexible connection structure and method suitable for compact space - Google Patents
Hydraulic pipeline flexible connection structure and method suitable for compact space Download PDFInfo
- Publication number
- CN105156806A CN105156806A CN201510595472.0A CN201510595472A CN105156806A CN 105156806 A CN105156806 A CN 105156806A CN 201510595472 A CN201510595472 A CN 201510595472A CN 105156806 A CN105156806 A CN 105156806A
- Authority
- CN
- China
- Prior art keywords
- joint
- nut
- sleeve
- tube nozzle
- flexible hose
- 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
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
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/22—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention relates to a hydraulic pipeline flexible connection structure suitable for compact space, which comprises a flexible hose (1), joints, sleeves, nuts and filler necks, wherein both ends of the flexible hose (1) are respectively provided with the joints and fastened by the sleeves; and the joints on the two ends are smoothly connected by two cylinders at an angle theta. Each nut is clamped with the corresponding joint, and the nuts on the two sides are respectively connected with the filler necks on a hydraulic pump (6) and a servo mechanism shell (7) through threads, so that the conical surface bellmouth orifice on one end of each filler neck is compacted with the cambered surface on one end of the corresponding joint, thereby implementing sealing. The invention also relates to a method for performing compact-space hydraulic pipeline flexible connection by using the structure. The structure is simple to manufacture and install, convenient for maintenance and reliable in sealing, and adopts the joints with certain bending angle to connect to the two sides of the flexible hose, thereby eliminating the limits of the flexible hose connection to the bending radius.
Description
Technical field
The present invention relates to a kind of pipeline flexible connecting means, particularly a kind of hydraulic tubing flexible connecting method being applicable to tight space.
Background technique
Hydraulic tubing function is delivery system energy, realizes fluid transmission.Due to structure installment spatial constraints, carrier rocket servomechanism adopts integration compactedness to design usually, oil hydraulic pump is integrated on servomechanism housing, oil hydraulic pump be connected with servomechanism housing high and low pressure pipeline have that span is short, feature that wide-angle is bending, usually adopt metal catheter to connect.
Metal catheter needs to carry out sampling according to space, product mounting point and produces, and the occasion especially large for latus rectum, curvature of space is many, needs repeatedly to adjust, and manufactures difficulty.Because sampling manufacture exists certain error, metal catheter needs repeatedly to finely tune after installing, revise guarantee be in place, seal reliable.And metal catheter easily produces residual stress when installing, repeated disassembled and assembled easily produces Light deformation, thus cause leakage of oil problem, bring the hidden danger of sealing reliability aspect.
Flexible hose at home and abroad aerospace flight vehicle extensively adopts, have absorb vibration, be easy to install, long service life and the feature such as lightweight, but due to two ends jointing structure and bending radius restriction, be mainly used in middle long span occasion.
Summary of the invention
The technical problem to be solved in the present invention is: overcome prior art deficiency, provide a kind of manufacture being applicable to tight space simple, install simple, maintain easily, seal reliable pipeline flexible connecting means.
The technical solution adopted in the present invention is:
Be applicable to a hydraulic tubing flexible connecting structure for tight space, comprise: flexible hose, the first joint, the second joint, the first sleeve, the second sleeve, the first nut, the second nut, the first connecting-tube nozzle and the second connecting-tube nozzle; Flexible hose two ends are connected to the first joint and the second joint respectively, the first sleeve and the second sleeve respectively banding in the joint of the first joint and the second joint and flexible hose; The first described joint or the shape of the second joint are: by two cylindrical drum with angle θ smooth connection, the end profile of one of them cylindrical drum is processed with the first annulus draw-in groove, end is provided with circular arc chamfering, another cylindrical drum end profile is processed with the second annulus draw-in groove, and this side end has an annular groove matched with flexible hose; First sleeve or the second sleeve are ring, and there is the ring projection with the second annulus draw-in groove phase clamping one end.
First nut and the second nut are enclosed within the side that the first joint and the second joint have circular arc chamfering respectively, and have through hole in the first nut or the second nut, the side of the first nut or the second nut is provided with the ring projection snapping in the first annulus draw-in groove.
First nut and the second nut are threaded connection with the first connecting-tube nozzle on oil hydraulic pump and the second connecting-tube nozzle on servomechanism housing respectively; Have through hole in first connecting-tube nozzle or the second connecting-tube nozzle, one end of the first connecting-tube nozzle or the second connecting-tube nozzle has conical surface bellmouth orifice and circular arc chamfering to compress, and realizes sealing.
Described angle θ is 120 ° ~ 180 °.
The conical surface of described conical surface bellmouth orifice is 60 ° or 37 °.
The material of described flexible hose is teflon hose, fluoroplastic flexible pipe or corrugated flexible hose.
The material of the first nut, the second nut, the first joint, the second joint, the first connecting-tube nozzle, the second connecting-tube nozzle, the first sleeve or the second sleeve is stainless steel, alloyed steel or aluminum alloy.
One is applicable to tight space hydraulic tubing flexible connecting method, it is characterized in that, comprises the steps:
A. by the first joint and first set jacket casing in the side of flexible hose, by the second joint and the second jacket casing opposite side at flexible hose; The first described joint or the shape of the second joint are: by two cylindrical drum with angle θ smooth connection, the end profile of one of them cylindrical drum is processed with the first annulus draw-in groove, end is provided with circular arc chamfering, another cylindrical drum end profile is processed with the second annulus draw-in groove, and this side end has an annular groove matched with flexible hose; Described first sleeve or the second sleeve are ring, and there is the ring projection with the second annulus draw-in groove phase clamping one end.
B. compress the first sleeve and the second sleeve, make the first sleeve and the second sleeve respectively banding in the joint of the first joint and the second joint and flexible hose.
C. the first nut and the second nut are enclosed within the first joint and the second joint respectively; Through hole is had in described first nut or the second nut.
D. compress the cirque structure on the first nut and the second nut, the ring projection on the first nut or the second nut is snapped in the first annulus draw-in groove.
E. the first nut and the second nut are threaded connection with the first connecting-tube nozzle on oil hydraulic pump and the second connecting-tube nozzle on servomechanism housing respectively, threaded together, make one end of the first connecting-tube nozzle or the second connecting-tube nozzle have conical surface bellmouth orifice and circular arc chamfering to compress respectively, realize sealing; Through hole is had in described first connecting-tube nozzle or the second connecting-tube nozzle.
The present invention's advantage is compared with prior art:
Employing flexible hose connects, and without the need to carrying out field sampling for product after flexible hose completes according to mounting point spatial design, can be mass, and manufactures simple.
Adopt the joint with certain bend angle to be connected to head dummy flexible pipe both sides, eliminate the restriction to the bending radius adopting flexible hose to connect.
Flexible hose installs the error produced in rear Absorbable rod production manufacture process, and once mounting can meet seal request, and install simple, sealing is reliable.
Flexible hose can repeated disassembled and assembled, and due to the leakage of oil problem that residual stress, Light deformation cause after avoiding metal catheter dismounting, working service is convenient.
Accompanying drawing explanation
Schematic diagram after the connection of Fig. 1 flexible hose;
Fig. 2 flexible hose linkage structure schematic diagram.
Embodiment
Be applicable to a hydraulic tubing flexible connecting structure for tight space as shown in Figure 1, hydraulic tubing diameter is φ 24mm, span L is 230mm.Linkage structure comprises: flexible hose 1, first joint 3, second joint 9, first sleeve 4, second sleeve 10, first nut 2, second nut 8, first connecting-tube nozzle 5 and the second connecting-tube nozzle 11.Figure 2 shows that one end of linkage structure.
Flexible hose 1 two ends be connected to respectively the first joint 3 and the second joint 9, first sleeve 4 and the second sleeve 10 respectively banding in the first joint 3 and the second joint 9 joint with flexible hose 1; The first described joint 3 or the shape of the second joint 9 are: by two cylindrical drum with angle θ smooth connection, the end profile of one of them cylindrical drum is processed with the first annulus draw-in groove, end is provided with circular arc chamfering, another cylindrical drum end profile is processed with the second annulus draw-in groove, and this side end has an annular groove matched with flexible hose 1; First sleeve 4 or the second sleeve 10 are ring, and there is the ring projection with the second annulus draw-in groove phase clamping one end;
Angle θ is 120 ° ~ 180 °, and the angle θ of the first joint 3 and the second joint 9 can be the same or different, and the first joint and the second joint are 144 ° here.
First nut 2 and the second nut 8 are enclosed within the side that the first joint 3 and the second joint 9 have arc surface respectively, and have through hole in nut, the side of nut is provided with internal thread, and opposite side is provided with the ring projection of the first annulus draw-in groove snapped on corresponding joint.
First nut 2 and the second nut are threaded connection with the first connecting-tube nozzle 5 on oil hydraulic pump 6 and the second connecting-tube nozzle 11 on servomechanism housing 7 respectively; Have through hole in connecting-tube nozzle, the conical surface bellmouth orifice of connecting-tube nozzle one end and the arc surface of corresponding joint one end compress, and realize sealing.The conical surface bellmouth orifice of connecting-tube nozzle one end is 60 ° of conical surface bellmouth orifices, also can be 37 ° of conical surface bellmouth orifices.
The material of flexible hose 1 is teflon hose, fluoroplastic flexible pipe or corrugated flexible hose.The material of nut, joint, connecting-tube nozzle or sleeve is stainless steel, alloyed steel or aluminum alloy.
A kind of hydraulic tubing flexible connecting method being applicable to tight space as shown in Figure 1, hydraulic tubing diameter is φ 24mm, span L is 230mm.Concrete steps are as follows:
A. the first joint 3 and the first sleeve 4 are enclosed within the side of flexible hose 1, by the second joint 9 and the second jacket casing 10 opposite side at flexible hose 1; The shape of described joint 3 is: by two cylindrical drum with angle θ smooth connection, the side of joint 3 is processed with the first annulus draw-in groove, this side terminal outboard surface is arc surface, and the opposite side of joint 3 is provided with the second annulus draw-in groove, and this side end has the annular groove that to match with flexible hose 1; Described sleeve 4 is ring, and there is the ring projection with the second annulus draw-in groove phase clamping of joint 3 sleeve 4 one end.
The material of flexible hose 1 is teflon hose, also can be fluoroplastic flexible pipe or corrugated flexible hose.The material of joint 3, sleeve 4 is stainless steels, also can be alloyed steel or aluminum alloy.The length of flexible pipe is 268mm.
θ can within the scope of 120 ° ~ 180 ° according to as installed space trend, span select, to adapt to installation requirements, avoid that flexible hose bending radius is too small causes damage to it, guarantee that flexible hose space moves towards smooth and easy.In the present embodiment, the angle θ of two joints is 144 °.
B. compress the first sleeve 4 and the second sleeve 10, make the first sleeve 4 and the second sleeve 10 respectively banding in the first joint 3 and the second joint 9 joint with flexible hose 1;
C. the first nut 2 and the second nut 8 are enclosed within the first joint 3 and the second joint 9 respectively.The material of the first nut 2 and the second nut 10 is stainless steels, also can be alloyed steel or aluminum alloy.
D. compress the cirque structure on the first nut 2 and the second nut 8, make the ring projection on the first nut 2 or the second nut 8 snap in the first annulus draw-in groove;
E. the first nut 2 and the second nut 8 are threaded connection with the first connecting-tube nozzle 5 on oil hydraulic pump 6 and the second connecting-tube nozzle 11 on servomechanism housing 7 respectively, threaded together, make one end of the first connecting-tube nozzle 5 or the second connecting-tube nozzle 11 have conical surface bellmouth orifice and circular arc chamfering to compress respectively, realize sealing; Through hole is had in described first connecting-tube nozzle 5 or the second connecting-tube nozzle 11.
Conical surface horn mouth is 60 ° of tapers, also can be the multiple sealing configurations such as 37 °.The material of the first connecting-tube nozzle 5 or the second connecting-tube nozzle 11 is stainless steels, also can be alloyed steel or aluminum alloy.
The unspecified part of the present invention belongs to technology as well known to those skilled in the art.
Claims (10)
1. be applicable to a hydraulic tubing flexible connecting structure for tight space, comprise: flexible hose (1), the first joint (3), the second joint (9), the first sleeve (4), the second sleeve (10), the first nut (2), the second nut (8), the first connecting-tube nozzle (5) and the second connecting-tube nozzle (11); Flexible hose (1) two ends are connected to the first joint (3) and the second joint (9) respectively, the first sleeve (4) and the second sleeve (10) respectively banding in the joint of the first joint (3) and the second joint (9) and flexible hose (1); Described the first joint (3) or the shape of the second joint (9) are: by two cylindrical drum with angle θ smooth connection, the end profile of one of them cylindrical drum is processed with the first annulus draw-in groove, end is provided with circular arc chamfering, another cylindrical drum end profile is processed with the second annulus draw-in groove, and this side end has an annular groove matched with flexible hose (1); First sleeve (4) or the second sleeve (10) are ring, and there is the ring projection with the second annulus draw-in groove phase clamping one end;
First nut (2) and the second nut (8) are enclosed within the side that the first joint (3) and the second joint (9) have circular arc chamfering respectively, have through hole in first nut (2) or the second nut (8), the side of the first nut (2) or the second nut (8) is provided with the ring projection snapping in the first annulus draw-in groove;
First nut (2) and the second nut (8) are threaded connection with the first connecting-tube nozzle (5) on oil hydraulic pump (6) and the second connecting-tube nozzle (11) on servomechanism housing (7) respectively; Have through hole in first connecting-tube nozzle (5) or the second connecting-tube nozzle (11), one end of the first connecting-tube nozzle (5) or the second connecting-tube nozzle (11) has conical surface bellmouth orifice and circular arc chamfering to compress, and realizes sealing.
2. the hydraulic tubing flexible connecting structure being applicable to tight space according to claim 1, is characterized in that: described angle θ is 120 ° ~ 180 °.
3. the hydraulic tubing flexible connecting structure being applicable to tight space according to claim 2, is characterized in that: the conical surface of described conical surface bellmouth orifice is 60 ° or 37 °.
4. the hydraulic tubing flexible connecting structure being applicable to tight space according to claim 1 or 2 or 3, is characterized in that: the material of described flexible hose (1) is teflon hose, fluoroplastic flexible pipe or corrugated flexible hose.
5. the hydraulic tubing flexible connecting structure being applicable to tight space according to claim 1 or 2 or 3, is characterized in that: the material of described first nut (2), the second nut (8), the first joint (3), the second joint (9), the first connecting-tube nozzle (5), the second connecting-tube nozzle (11), the first sleeve (4) or the second sleeve (10) is stainless steel, alloyed steel or aluminum alloy.
6. be applicable to a tight space hydraulic tubing flexible connecting method, it is characterized in that, comprise the steps:
A. the first joint (3) and the first sleeve (4) are enclosed within the side of flexible hose (1), by the second joint (9) and the second jacket casing (10) opposite side in flexible hose (1); Described the first joint (3) or the shape of the second joint (9) are: by two cylindrical drum with angle θ smooth connection, the end profile of one of them cylindrical drum is processed with the first annulus draw-in groove, end is provided with circular arc chamfering, another cylindrical drum end profile is processed with the second annulus draw-in groove, and this side end has an annular groove matched with flexible hose (1); Described first sleeve (4) or the second sleeve (10) are ring, and there is the ring projection with the second annulus draw-in groove phase clamping one end;
B. compress the first sleeve (4) and the second sleeve (10), make the first sleeve (4) and the second sleeve (10) respectively banding in the joint of the first joint (3) and the second joint (9) and flexible hose (1);
C. the first nut (2) and the second nut (8) are enclosed within the first joint (3) and the second joint (9) respectively; Through hole is had in described first nut (2) or the second nut (8);
D. compress the cirque structure on the first nut (2) and the second nut (8), make the ring projection on the first nut (2) or the second nut (8) snap in the first annulus draw-in groove;
E. the first nut (2) and the second nut (8) are threaded connection with the first connecting-tube nozzle (5) on oil hydraulic pump (6) and the second connecting-tube nozzle (11) on servomechanism housing (7) respectively, threaded together, make one end of the first connecting-tube nozzle (5) or the second connecting-tube nozzle (11) have conical surface bellmouth orifice and circular arc chamfering to compress respectively, realize sealing; Through hole is had in described first connecting-tube nozzle (5) or the second connecting-tube nozzle (11).
7. a kind of hydraulic tubing flexible connecting method being applicable to tight space according to claim 6, is characterized in that: in described step a, and angle θ is 120 ° ~ 180 °.
8. a kind of hydraulic tubing flexible connecting method being applicable to tight space according to claim 7, is characterized in that: in described step e, and the conical surface of conical surface bellmouth orifice is 60 ° or 37 °.
9. a kind of hydraulic tubing flexible connecting method being applicable to tight space according to claim 6 or 7 or 8, is characterized in that: the material of described flexible hose (1) is teflon hose, fluoroplastic flexible pipe or corrugated flexible hose.
10. a kind of hydraulic tubing flexible connecting method being applicable to tight space according to claim 6 or 7 or 8, is characterized in that: the material of described first nut (2), the second nut (8), the first joint (3), the second joint (9), the first connecting-tube nozzle (5), the second connecting-tube nozzle (11), the first sleeve (4) or the second sleeve (10) is stainless steel, alloyed steel or aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510595472.0A CN105156806A (en) | 2015-09-17 | 2015-09-17 | Hydraulic pipeline flexible connection structure and method suitable for compact space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510595472.0A CN105156806A (en) | 2015-09-17 | 2015-09-17 | Hydraulic pipeline flexible connection structure and method suitable for compact space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105156806A true CN105156806A (en) | 2015-12-16 |
Family
ID=54797773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510595472.0A Pending CN105156806A (en) | 2015-09-17 | 2015-09-17 | Hydraulic pipeline flexible connection structure and method suitable for compact space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105156806A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930855A (en) * | 2018-08-04 | 2018-12-04 | 广州力冠液压器材有限公司 | A kind of hydraulic pipeline flexible connecting structure and method suitable for tight space |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3684319A (en) * | 1970-05-27 | 1972-08-15 | Tasco Eng & Supply Inc | Hose end coupling |
| US3784236A (en) * | 1971-10-05 | 1974-01-08 | Robroy Ind | Fitting for flexible conduits |
| DE2456678A1 (en) * | 1974-11-30 | 1976-08-12 | Oskar Biegel | Hose coupling for tap with external nozzle thread - has clamp ring with internal tapered contraction flange |
| CN1049549A (en) * | 1989-08-17 | 1991-02-27 | 国营大连造船厂 | Ring shaped hose connecting assembly |
| CN1250512A (en) * | 1997-03-18 | 2000-04-12 | 乌波诺尔创新股份公司 | Method for making a pipe connection, and a pipe connection |
| CN201992220U (en) * | 2011-04-15 | 2011-09-28 | 宁波东港紧固件制造有限公司 | Spherical fastening-pressing type hose joint |
| CN203215153U (en) * | 2013-03-28 | 2013-09-25 | 三一重型装备有限公司 | Withhold type hose joint, rubber tube assembly and engineering machinery |
| CN104089113A (en) * | 2014-06-24 | 2014-10-08 | 卢世清 | Eccentric spherical externally-conical sealing structure for engine pipeline |
| CN204372396U (en) * | 2015-01-06 | 2015-06-03 | 湖北三江航天红阳机电有限公司 | A kind of doubly-closed tube pipeline connector |
-
2015
- 2015-09-17 CN CN201510595472.0A patent/CN105156806A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3684319A (en) * | 1970-05-27 | 1972-08-15 | Tasco Eng & Supply Inc | Hose end coupling |
| US3784236A (en) * | 1971-10-05 | 1974-01-08 | Robroy Ind | Fitting for flexible conduits |
| DE2456678A1 (en) * | 1974-11-30 | 1976-08-12 | Oskar Biegel | Hose coupling for tap with external nozzle thread - has clamp ring with internal tapered contraction flange |
| CN1049549A (en) * | 1989-08-17 | 1991-02-27 | 国营大连造船厂 | Ring shaped hose connecting assembly |
| CN1250512A (en) * | 1997-03-18 | 2000-04-12 | 乌波诺尔创新股份公司 | Method for making a pipe connection, and a pipe connection |
| CN201992220U (en) * | 2011-04-15 | 2011-09-28 | 宁波东港紧固件制造有限公司 | Spherical fastening-pressing type hose joint |
| CN203215153U (en) * | 2013-03-28 | 2013-09-25 | 三一重型装备有限公司 | Withhold type hose joint, rubber tube assembly and engineering machinery |
| CN104089113A (en) * | 2014-06-24 | 2014-10-08 | 卢世清 | Eccentric spherical externally-conical sealing structure for engine pipeline |
| CN204372396U (en) * | 2015-01-06 | 2015-06-03 | 湖北三江航天红阳机电有限公司 | A kind of doubly-closed tube pipeline connector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930855A (en) * | 2018-08-04 | 2018-12-04 | 广州力冠液压器材有限公司 | A kind of hydraulic pipeline flexible connecting structure and method suitable for tight space |
| CN108930855B (en) * | 2018-08-04 | 2020-08-11 | 广州力冠液压器材有限公司 | Hydraulic pipeline flexible connection structure and method suitable for compact space |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10190703B2 (en) | Support for a conduit | |
| CN104712863A (en) | Air pipeline fast connector | |
| CN105202288A (en) | Pipe connector | |
| CN105156806A (en) | Hydraulic pipeline flexible connection structure and method suitable for compact space | |
| CN205445759U (en) | Engine exhaust structure | |
| CN202647044U (en) | Flexible high-pressure pipe connecting device | |
| CN207093968U (en) | A kind of loose joint head assembly | |
| CN201589020U (en) | Bellows with improved structure | |
| CN210153366U (en) | Pipe connecting piece | |
| CN209180531U (en) | A kind of ship cabin base pressure loading system PE anchor point connecting pipe | |
| CN105387296A (en) | Pipeline butt joint and compression joint connecting piece and butt joint and compression joint method thereof | |
| CN202149305U (en) | Flexible metal conduit connection structure | |
| CN103292094A (en) | Diameter variable glass fiber pipeline | |
| CN105065821A (en) | Pipe joint for flexible high-pressure composite conveying pipe | |
| CN110303078A (en) | A kind of novel circular tube pane bending apparatus | |
| CN101852318B (en) | Flange-type connecting system of compressed air conveying pipeline | |
| CN108930855B (en) | Hydraulic pipeline flexible connection structure and method suitable for compact space | |
| CN202884320U (en) | Connecting structure for conduit of low pressure pipeline system | |
| CN101725784A (en) | Dual-extrusion quick joint | |
| CN201739669U (en) | Fuel manifold | |
| CN205207973U (en) | Inside and outside crimping pipe joint subassembly | |
| CN201228831Y (en) | Universal joint compensating mechanism for pressure conduit | |
| CN205013083U (en) | Gasoline engine booster advances oil pipe | |
| CN217686865U (en) | Rocket connector active pulling-out device | |
| CN219013643U (en) | Pipeline connection structure and pipeline assembly |
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: 20151216 |
|
| RJ01 | Rejection of invention patent application after publication |