CN1908494A - Teflon hose set pulling and pressing type metal connector and assembly thereof - Google Patents
Teflon hose set pulling and pressing type metal connector and assembly thereof Download PDFInfo
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- CN1908494A CN1908494A CN 200610029705 CN200610029705A CN1908494A CN 1908494 A CN1908494 A CN 1908494A CN 200610029705 CN200610029705 CN 200610029705 CN 200610029705 A CN200610029705 A CN 200610029705A CN 1908494 A CN1908494 A CN 1908494A
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Abstract
The present invention belongs to the mechanical technique field, especially relates to teflon hose set pulling and pressing type metal connector and assembly thereof, which is composed of a nut, a joint, a outer sleeve, a neck bush, a reinforced layer and a teflon inner tube. Its preparation is: cutting the hose-assembly, covering the sleeve outside of the reinforced layer, arranging the expand pulling and pressing drawing die inside of the teflon inner tube, pushing the neck bush into the inner tube, relaxing the reinforced layer on the end head of the teflon inner tube expanded by the expanding die, clamping the cut teflon inner tube, pushing the joint into the space between the inwall of the reinforced layer and the outwall of the teflon inner tube. The sleeve is pushed from the middle of the teflon inner tube to the joint hexagonal to make the two end face contact. The neck bush is pushed into the joint through pulling to adjust the withold art size of the attaching machine, burke the sleeve, heal the nut and finish the assembling. The invention not only ensures the maximum diameter of the tube, but also decreases the inner stress supported by the tube, having long service life, strong tightness and convenient operation.
Description
Technical field
The invention belongs to field of mechanical technique, be specifically related to a kind of polytetrafluoroethylhose hose assembly pull fastening type metal connector and assembly method thereof.
Background technique
The used metal connecting piece of traditional polytetrafluoroethylhose hose assembly (hereinafter to be referred as " hose ") adopts multiple-grooved fastening-pressing type structural type, metal connecting piece is made up of joint, outer sleeve and nut, its assembly method is by joint is inserted teflon hose, directly withholds in outer sleeve, steel wire enhancement layer and the teflon pipe and carries out combine and assemble and be sealed to form.Mainly there is following defective in the joint of this form: 1, simple in structure, do not separate that tension is taken off and sealing, once afterburning sealing of withholding very difficult solution joint makes the hose joint that very high taking off property of tension be arranged, and good sealing and fatigue resistance are arranged again simultaneously.2, the sealing surface of joint produces than serious deformation flexible pipe by withholding sleeve, and interior pipe amount of deformation is too big, and hose is caused damage, and causes sealability to reduce.3, seal form can not form annular seal, and hose is leaked easily.4, the hose tension is taken off poor effect, and is shock-resistant, high and low temperature resistance is poor.
Therefore, it is little to study a kind of fatigability cracking, interior pipe amount of deformation that can reduce hose joint end, the technical goal that hose pull fastening type metal connector that prolong hose working life, bear high workload pressure more, sealing is strong and assembly method thereof are those skilled in the art.
Summary of the invention
The object of the present invention is to provide that a kind of novel tension is taken off, sealing is strong, long service life, be applicable to and bear more the hose pull fastening type metal connector and the assembly method thereof of high workload pressure and serviceability temperature.
The hose pull fastening type metal connector that the present invention proposes, form by pipe 6 in nut 1, joint 2, outer sleeve 3, neck bush 4, enhancement layer 5 and the teflon, its structure as shown in Figure 1, wherein, attachment hole 7 in the joint 1 is cylindric, has circular groove 12 on the hole wall of attachment hole 7, and neck bush 4 one ends are provided with flange 13, neck bush 4 is positioned at attachment hole 7, and its flange 13 is embedded in the circular groove 12; By withholding, make enhancement layer 5 be circular cone, cylindrical structural round the shape of tip side, be connected to form successively by embedding section 8, flared section 9, contraction section 10 and stable section 11, embed section 8, stable section 11 is cylindrical, it is conical that flared section 9 and contraction section 10 are, the diameter that embeds section 8 is greater than stable section 11 diameters, makes to embed section 8 self pulling-out force greater than stable section 11; Enhancement layer 5 is placed in manages outside 6 in the teflon, form the space between pipe 6 outer walls in the inwall of the embedding section 8 of enhancement layer 5, flared section 9 and contraction section 10 and the teflon, this space constitutes fittings body seal groove 14, place the joint of seal groove 14 after end structure mate with seal groove 14; Pipe 6 places the seal groove 14 outside the neck bush 4 in the teflon, and joint 2 front end outer surfaces have the arc sealing surface, and nut 1 is sleeved on joint 2 front ends, and there is connecting thread nut 1 inboard, is sleeve 3 outside the enhancement layer 5.
Among the present invention, enhancement layer 5 is to adopt to twine and weave the steel wire floor that combines and form.
The assembly method of the hose pull fastening type metal connector that the present invention proposes, its concrete steps are as follows:
1, by product requirement hose is cut into the length that needs, also claim " blanking ", and pipe in the cutting;
2, outer sleeve 3 is placed in outside the enhancement layer 5 of hose;
3, will expand the pull mould and place pipe 6 in the teflon;
4, neck bush 4 is advanced in the teflon in the pipe 6;
5, the enhancement layer 5 of pipe 6 end portions in the loose teflon;
6, open pipe 6 termination enhancement layers 5 in the teflon with the flaring die expansion;
7, pincers are got pipe 6 in the teflon that is cut;
8, joint 2 is advanced in enhancement layer 5 inwalls and the teflon between pipe 6 outer walls;
9, sleeve 3 keeps in touch both ends of the surface by being advanced to joint 2 hexagonal places in the middle of the pipe 6 in the teflon;
10, traction expansion pull mould enters in the joint 2 neck bush 4, and by expansion pull mould expansion flange 13, flange 13 is embedded in the circular groove 12;
11, the adjusting button press is withheld process, withholds outer sleeve 3;
12, the closing in coupling nut 1, and assembling finishes.
Employed material is a metal connecting piece among the present invention, the metal connecting piece of this structure is when assembling with enhancement layer, the sealing and the withholding of enhancement layer of pipe are separated in the polytetrafluoroethyl-ne, the needs of sealing have not only been satisfied, can improve simultaneously the join strength of joint and body, the tension of the joint that the present invention makes outstanding joint on structural design is taken off and two key points of sealing, and make it to separate, between under sleeve, the joint cone shoulder is that tension is taken off the district, and joint inboard, liner periphery are seal areas.
The present invention adopts a series of technical measures to guarantee and strengthens the functional effect that pulls district, seal area: preset expansion pull mould and liner, traction expansion pull mould drives liner and advances, make liner squeeze pipe in the embedding teflon from inside to outside, can bear the high pressure sealing district of 28MPa working pressure in the inboard formation of joint, mould continues to move ahead with the expansion of liner termination, location, consolidates seal area.The Stainless Steel Wire enhancement layer separates with pipe in the teflon, and enhancement layer inserts between sleeve and the joint external cone, compresses therebetween enhancing steel wire through withholding sleeve, and the vertical tension between the formation hose coupling is taken off the district.
The present invention adopts digital display vernier card in assembling, two card bases are separately fixed on similar lathe tailstock body and the telescopic head, measures, controls the process parameter value of per pass operation; The design of special assembling tool improves flexible pipe and joint concentricity in the assembling; The design and the manufacturing of progressive expansion pull mould guarantee traction, the expansion of liner, are the keys that forms flexible pipe and joint sealing district.
Polytetrafluoroethylhose hose assembly pull fastening type metal connector provided by the invention is a kind of supplementary material for the aerospace flight vehicle use.Use the performance index of the polytetrafluoroethylhose hose assembly of pull fastening type metal connector to be: Maximum operating pressure 28MPa, 204 ℃ of maximum operation (service) temperatures, minimum serviceability temperature-55 ± 5 ℃, the high temperature bursting pressure is greater than 84MPa, the room temperature bursting pressure is greater than 112MPa, impulse test surpasses 100,000 times, and high low temperature bend test (55 ℃～204 ℃) reaches 400,000 times.
The present invention has not only guaranteed the maximum diameter of flexible pipe effectively, and the internal stress that flexible pipe is born reduces, and has long service life, the advantage that sealing is strong, easy to operate.
Description of drawings
Fig. 1 is a configuration diagram of the present invention.
Number in the figure: 1 is nut, and 2 is joint, and 3 is outer sleeve, 4 is neck bush, and 5 is enhancement layer, and 6 is pipe in the teflon, 7 is attachment hole, 8 is the embedding section of enhancement layer, and 9 is the flared section of enhancement layer, and 10 is the contraction section of enhancement layer, 11 is the stable section of enhancement layer, 12 is circular groove, and 13 is flange, and 14 is the fittings body seal groove.
Embodiment
Further specify the present invention below by embodiment.
Embodiment 1: as shown in Figure 1, polytetrafluoroethylhose hose assembly pull fastening type metal connector is made up of pipe 6 in nut 1, joint 2, outer sleeve 3, neck bush 4, enhancement layer 5 and the teflon, wherein, attachment hole 7 in the joint 1 is cylindric, have circular groove 12 on the hole wall of attachment hole 7, neck bush 4 one ends are provided with flange 13, and neck bush 4 is positioned at attachment hole 7, and its flange 13 is embedded in the circular groove 12; By withholding, make enhancement layer 5 be circular cone, cylindrical structural round the shape of tip side, be connected to form successively by embedding section 8, flared section 9, contraction section 10 and stable section 11, embed section 8, stable section 11 is cylindrical, it is conical that flared section 9 and contraction section 10 are, the diameter that embeds section 8 is greater than stable section 11 diameters, makes to embed section 8 self pulling-out force greater than stable section 11; Enhancement layer 5 is placed in manages outside 6 in the teflon, form the space between pipe 6 outer walls in the inwall of the embedding section 8 of enhancement layer 5, flared section 9 and contraction section 10 and the teflon, this space constitutes fittings body seal groove 14, place the joint of seal groove 14 after end structure mate with seal groove 14; Pipe 6 places neck bush 4 external sealed grooves 14 in the teflon, and joint 2 front end outer surfaces have the arc sealing surface, and nut 1 is sleeved on joint 2 front ends, and there is connecting thread nut 1 inboard, is sleeve 3 outside the enhancement layer 5.Enhancement layer 5 is to adopt to twine and weave the steel wire floor that combines and form.Adopt Φ 6mm teflon hose: 9mm is reserved in the flexible pipe cutting, pipe Cutting Length 5mm in the teflon, and neck bush advances reserves 41mm, neck bush advances degree of depth 21mm, and joint advances reserves 20mm, loose degree of depth 2mm, enlarging degree of depth 14mm, joint advances degree of depth 8.35mm, position length 143mm, trimming scale 1.25mm, nut is withheld size 16.3mm, nut is withheld height 4.5mm, withholds diameter 14.6mm, withholds length 12mm.
Assembly method of the present invention is as follows:
1, adopt Φ 6mm teflon hose, press product requirement the cutting flexible pipe, 9mm is reserved in the flexible pipe cutting, and pipe in the cutting, and Cutting Length is 5mm;
2, outer sleeve 3 is enclosed within outside the hose;
3, expansion pull mould places pipe 6 in the teflon;
4, neck bush 4 is advanced in the interior tube chamber, neck bush advances reserves 41mm;
5, loose hose end head part enhancement layer, the loose degree of depth is 2mm;
6, open flexible pipe termination Stainless Steel Wire enhancement layer 5, enlarging degree of depth 14mm with the flaring die expansion;
7, pincers are got pipe 6 in the teflon that is cut;
8, joint 2 is advanced to pipe 6 centres in enhancement layer 5 and the teflon, it is 8.35mm that joint advances the degree of depth, position length 143mm, trimming scale 1.25mm;
9, sleeve 3 is advanced to joint 2 hexagonal places by in the middle of the flexible pipe, and both ends of the surface are kept in touch;
10, traction expansion pull mould enters in the joint 2 neck bush 4, and neck bush advances degree of depth 21mm, and by expansion pull mould expansion flange 13, flange 13 is embedded in the circular groove 12;
11, the adjusting button press is withheld process, withholds sleeve 3;
12, the closing in coupling nut 1, and assembling finishes.Nut is withheld size 16.3mm, withholds height 4.5mm, withholds diameter 14.6mm, withholds length 12mm.
Gained pull assembling fastening type metal connector is used for the supplementary material that aerospace flight vehicle uses, its performance index can reach: Maximum operating pressure 28.0MPa, serviceability temperature-55 ℃～+ 204 ℃, the high temperature bursting pressure is greater than 84MPa, the room temperature bursting pressure is greater than 112MPa, impulse test surpasses 100,000 times, and high low temperature bend test (55 ℃～204 ℃) reaches 400,000 times.
Embodiment 2: as shown in Figure 1, polytetrafluoroethylhose hose assembly pull fastening type metal connector is made up of pipe 6 in nut 1, joint 2, outer sleeve 3, neck bush 4, enhancement layer 5 and the teflon, wherein, attachment hole 7 in the joint 1 is cylindric, have circular groove 12 on the hole wall of attachment hole 7, neck bush 4 one ends are provided with flange 13, and neck bush 4 is positioned at attachment hole 7, and its flange 13 is embedded in the circular groove 12; By withholding, make enhancement layer 5 be circular cone, cylindrical structural round the shape of tip side, be connected to form successively by embedding section 8, flared section 9, contraction section 10 and stable section 11, embed section 8, stable section 11 is cylindrical, it is conical that flared section 9 and contraction section 10 are, the diameter that embeds section 8 is greater than stable section 11 diameters, makes to embed section 8 self pulling-out force greater than stable section 11; Enhancement layer 5 is placed in manages outside 6 in the teflon, form the space between pipe 6 outer walls in the inwall of the embedding section 8 of enhancement layer 5, flared section 9 and contraction section 10 and the teflon, this space constitutes fittings body seal groove 14, place the joint of seal groove 14 after end structure mate with seal groove 14; Pipe 6 places neck bush 4 external sealed grooves 14 in the teflon, and joint 2 front end outer surfaces have the arc sealing surface, and nut 1 is sleeved on joint 2 front ends, and there is connecting thread nut 1 inboard, is sleeve 3 outside the enhancement layer 5.Enhancement layer 5 is to adopt to twine and weave the steel wire floor that combines and form.Adopt Φ 8mm teflon hose: 11mm is reserved in the hose cutting, pipe cutting 9.7mm in the teflon, and neck bush advances reserves 44mm, neck bush advances degree of depth 23mm, and joint advances reserves 22mm, loose degree of depth 2mm, enlarging degree of depth 12mm, joint advances degree of depth 10mm, position length 141mm, trimming scale 1.6mm, nut is withheld size 19.3mm, nut is withheld height 4.5mm, withholds diameter 16.6mm, withholds length 15mm.
Assembly method of the present invention is as follows:
1, adopt Φ 8mm teflon hose, by product requirement hose is cut into the length that needs, 11mm is reserved in the hose cutting, and pipe in the cutting, pipe cutting 9.7mm in the teflon;
2, outer sleeve 3 is placed in outside the enhancement layer 5 of hose;
3, will expand the pull mould and place pipe 6 in the teflon;
4, neck bush 4 is advanced in the interior tube chamber, neck bush advances reserves 44mm;
5, loose hose end head part strengthens steel wire floor, and the loose degree of depth is 2mm;
6, open flexible pipe termination Stainless Steel Wire enhancement layer 5, enlarging degree of depth 12mm with the flaring die expansion;
7, pincers are got pipe 6 in the teflon that is cut;
8, joint 2 is advanced to pipe 6 centres in flexible pipe enhancement layer 5 and the teflon, it is 10mm that joint advances the degree of depth, position length 141mm trimming scale 1.6mm;
9, sleeve 3 is advanced to joint 2 hexagonal places by in the middle of the flexible pipe, and both ends of the surface are kept in touch;
10, traction expansion pull mould enters in the joint 2 neck bush 4, and neck bush advances degree of depth 23mm, and by expansion pull mould expansion flange 13, flange 13 is embedded in the circular groove 12;
11, the adjusting button press is withheld process, withholds sleeve 3;
12, the closing in coupling nut 1, and assembling finishes.Nut is withheld size 19.3mm, and nut is withheld height 4.5mm, withholds diameter 16.6mm, withholds length 15mm.
Gained pull assembling fastening type metal connector is used for the supplementary material that aerospace flight vehicle uses, its performance index can reach: Maximum operating pressure 28.0MPa, serviceability temperature-55 ℃～+ 204 ℃, the high temperature bursting pressure is greater than 84MPa, the room temperature bursting pressure is greater than 112MPa, impulse test surpasses 100,000 times, and high low temperature bend test (55 ℃～204 ℃) reaches 400,000 times.
Embodiment 3, as shown in Figure 1, polytetrafluoroethylhose hose assembly pull fastening type metal connector is made up of pipe 6 in nut 1, joint 2, outer sleeve 3, neck bush 4, enhancement layer 5 and the teflon, its structure as shown in Figure 1, wherein, the attachment hole 7 in the joint 1 is cylindric, have circular groove 12 on the hole wall of attachment hole 7, neck bush 4 one ends are provided with flange 13, and neck bush 4 is positioned at attachment hole 7, and its flange 13 is embedded in the circular groove 12; By withholding, make enhancement layer 5 be circular cone, cylindrical structural round the shape of tip side, be connected to form successively by embedding section 8, flared section 9, contraction section 10 and stable section 11, embed section 8, stable section 11 is cylindrical, it is conical that flared section 9 and contraction section 10 are, the diameter that embeds section 8 is greater than stable section 11 diameters, makes to embed section 8 self pulling-out force greater than stable section 11; Enhancement layer 5 is placed in manages outside 6 in the teflon, form the space between pipe 6 outer walls in the inwall of the embedding section 8 of enhancement layer 5, flared section 9 and contraction section 10 and the teflon, this space constitutes fittings body seal groove 14, place the joint of seal groove 14 after end structure mate with seal groove 14; Pipe 6 places neck bush 4 external sealed grooves 14 in the teflon, and joint 2 front end outer surfaces have the arc sealing surface, and nut 1 is sleeved on joint 2 front ends, and there is connecting thread nut 1 inboard, is sleeve 3 outside the enhancement layer 5.Enhancement layer 5 is to adopt to twine and weave the steel wire floor that combines and form.Adopt Φ 18mm teflon hose: 21mm is reserved in the hose cutting, pipe Cutting Length 18.3mm in the teflon, and neck bush advances reserves 69mm, neck bush advances degree of depth 36mm, and joint advances reserves 35mm, loose degree of depth 10mm, enlarging degree of depth 20mm, joint advances degree of depth 18mm, position length 131mm, trimming scale 1.3mm, nut is withheld size 28.7mm, nut is withheld height 6mm, withholds diameter 30mm, withholds length 25mm.
Assembly method of the present invention is as follows:
1, adopt Φ 18mm teflon hose, by product requirement flexible pipe is cut into the length that needs, 21mm is reserved in the hose cutting, and pipe in the cutting, pipe Cutting Length 18.3mm in the teflon;
2, outer sleeve 3 is placed in outside the enhancement layer 5 of hose;
3, will expand the pull mould and place pipe 6 in the teflon;
4, neck bush 4 is advanced in the interior tube chamber, neck bush advances reserves 69mm;
5, loose hose end head part strengthens steel wire, loose degree of depth 10mm;
6, open flexible pipe termination Stainless Steel Wire enhancement layer 5, enlarging degree of depth 20mm with the flaring die expansion;
7, pincers are got pipe in the teflon that is cut;
8, joint 2 is advanced to pipe 6 centres in enhancement layer 5 and the teflon, joint advances degree of depth 18mm, position length 131mm, trimming scale 1.3mm;
9, sleeve 3 is advanced to joint 2 hexagonal places by in the middle of the flexible pipe, and both ends of the surface are kept in touch;
10, traction expansion pull mould enters in the joint 2 neck bush 4, and neck bush advances degree of depth 36mm, and by expansion pull mould expansion flange 13, flange 13 is embedded in the circular groove 12;
11, the adjusting button press is withheld process, withholds sleeve 3;
12, the closing in coupling nut 1, and assembling finishes.Nut is withheld size 28.7mm, and nut is withheld height 6mm, withholds diameter 30mm, withholds length 25mm.
Gained pull assembling fastening type metal connector is used for the supplementary material that aerospace flight vehicle uses, its performance index can reach: Maximum operating pressure 28.0MPa, serviceability temperature-55 ℃～+ 204 ℃, the high temperature bursting pressure is greater than 84MPa, the room temperature bursting pressure is greater than 112MPa, impulse test surpasses 100,000 times, and high low temperature bend test (55 ℃～204 ℃) reaches 400,000 times.
Claims (3)
1, a kind of polytetrafluoroethylhose hose assembly pull fastening type metal connector, form by pipe (6) in nut (1), joint (2), outer sleeve (3), neck bush (4), enhancement layer (5) and the teflon, it is characterized in that the attachment hole (7) in the joint (1) is cylindric, have circular groove (12) on the hole wall of attachment hole (7), neck bush (4) one ends are provided with flange (13), neck bush (4) is positioned at attachment hole (7), and its flange (13) is embedded in the circular groove (12); Enhancement layer (5) is circular cone, cylindrical structural round the shape of tip side, be connected to form successively by embedding section (8), flared section (9), contraction section (10) and stable section (11), embed section (8), stable section (11) is cylindrical, it is conical that flared section (9) and contraction section (10) are, the diameter that embeds section (8) makes to embed section (8) self pulling-out force greater than stable section (11) greater than stable section (11) diameter; Enhancement layer (5) is placed in manages outside (6) in the teflon, form the space between pipe (6) outer wall in the inwall of the embedding section (8) of enhancement layer (5), flared section (9) and contraction section (10) and the teflon, this space constitutes fittings body seal groove (14), place the joint of seal groove (14) after end structure mate with seal groove (14); Pipe (6) places the outer seal groove (14) of neck bush (4) in the teflon, and joint (2) front end outer surface has the arc sealing surface, and nut (1) is sleeved on joint (2) front end; There is connecting thread nut (1) inboard, and enhancement layer (5) is outer to be sleeve (3).
2, polytetrafluoroethylhose hose assembly pull assembling fastening type metal connector according to claim 1, its feature are to adopt to twine and weave the steel wire floor that combines at enhancement layer (5).
3, a kind of assembling polytetrafluoroethylhose hose assembly pull assembling fastening type metal connector as claimed in claim 1 is characterized in that concrete steps are as follows:
(1), hose is cut into the length that needs, and pipe in the cutting by product requirement;
(2), outer sleeve (3) is placed in outside the enhancement layer (5) of hose;
(3), will expand the pull mould and place pipe (6) in the teflon hose;
(4), neck bush (4) is advanced in the interior pipe of teflon (6) chamber;
(5), the enhancement layer (5) of pipe (6) end portion Stainless Steel Wire in the loose flexible pipe teflon;
(6), open pipe (6) termination Stainless Steel Wire enhancement layer (5) in the flexible pipe teflon with the flaring die expansion;
(7), pincers are got pipe (6) in the interior teflon that is cut;
(8), managed between (6) outer wall centre joint (2) is advanced to; in flexible pipe enhancement layer (5) inwall and the interior teflon
(9), (6) are middle to be advanced to joint (2) hexagonal place to sleeve (3) by managing in the flexible pipe teflon, and both ends of the surface are kept in touch;
(10), traction expansion pull mould, neck bush (4) is entered in the joint (2), and, flange (13) is embedded in the circular groove (12) by expansion pull mould expansion flange (13);
(11), the adjusting button press withholds process, withholds outer sleeve (3);
(12), closing in coupling nut (1), assembling finishes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100297051A CN100398898C (en) | 2006-08-03 | 2006-08-03 | Teflon hose set pulling and pressing type metal connector and assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100297051A CN100398898C (en) | 2006-08-03 | 2006-08-03 | Teflon hose set pulling and pressing type metal connector and assembly thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1908494A true CN1908494A (en) | 2007-02-07 |
| CN100398898C CN100398898C (en) | 2008-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100297051A Active CN100398898C (en) | 2006-08-03 | 2006-08-03 | Teflon hose set pulling and pressing type metal connector and assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100398898C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302264A (en) * | 2018-04-04 | 2018-07-20 | 南京知行管业有限公司 | A kind of resistance to compression fuel gas transmission stainless steel corrugated flexible hose |
| CN108302265A (en) * | 2018-04-04 | 2018-07-20 | 南京知行管业有限公司 | A kind of Novel clock tool connecting tube |
| CN109277773A (en) * | 2018-10-22 | 2019-01-29 | 沈阳兴华航空电器有限责任公司 | A kind of sealing-in assembly method shielding hose |
| CN109386671A (en) * | 2018-12-03 | 2019-02-26 | 攀钢集团工程技术有限公司 | Hydraulic hose assembly production method for metallurgical equipment |
| CN110726015A (en) * | 2019-10-28 | 2020-01-24 | 徐州科恒奥制冷设备有限公司 | Connecting piece applied to automobile refrigeration system |
| CN110805768A (en) * | 2019-12-05 | 2020-02-18 | 陕西欣欣智能管业有限公司 | Composite metal joint and manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2207577A5 (en) * | 1972-11-21 | 1974-06-14 | Inst Francais Du Petrole | |
| DE4302215C1 (en) * | 1993-01-27 | 1994-07-21 | Dueker Eisenwerk | Thrust-resistant push-in socket connection |
| JP3644749B2 (en) * | 1996-03-22 | 2005-05-11 | Ｓｍｃ株式会社 | Pipe fitting |
| CA2306495A1 (en) * | 1997-10-14 | 1999-04-22 | Krystyna Izabella Langkjaer | An assembly of an end-fitting and a flexible pipe |
| CN2364315Y (en) * | 1999-02-13 | 2000-02-16 | 成都市金牛七星新技术应用研究所 | Plastic tubing connecting device |
| JP2003287178A (en) * | 2002-03-28 | 2003-10-10 | Tokai Rubber Ind Ltd | Hose connecting structure |
| CN2765033Y (en) * | 2004-11-19 | 2006-03-15 | 江阴市兴缘金属制品有限公司 | Flexible polytetrafluoroethylene metal conduit with internal and external thread |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302264A (en) * | 2018-04-04 | 2018-07-20 | 南京知行管业有限公司 | A kind of resistance to compression fuel gas transmission stainless steel corrugated flexible hose |
| CN108302265A (en) * | 2018-04-04 | 2018-07-20 | 南京知行管业有限公司 | A kind of Novel clock tool connecting tube |
| CN109277773A (en) * | 2018-10-22 | 2019-01-29 | 沈阳兴华航空电器有限责任公司 | A kind of sealing-in assembly method shielding hose |
| CN109386671A (en) * | 2018-12-03 | 2019-02-26 | 攀钢集团工程技术有限公司 | Hydraulic hose assembly production method for metallurgical equipment |
| CN110726015A (en) * | 2019-10-28 | 2020-01-24 | 徐州科恒奥制冷设备有限公司 | Connecting piece applied to automobile refrigeration system |
| CN110805768A (en) * | 2019-12-05 | 2020-02-18 | 陕西欣欣智能管业有限公司 | Composite metal joint and manufacturing method |
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| Publication number | Publication date |
|---|---|
| CN100398898C (en) | 2008-07-02 |
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