CN103292106A - PE pipeline cold connecting sleeve barrel - Google Patents
PE pipeline cold connecting sleeve barrel Download PDFInfo
- Publication number
- CN103292106A CN103292106A CN201310258090XA CN201310258090A CN103292106A CN 103292106 A CN103292106 A CN 103292106A CN 201310258090X A CN201310258090X A CN 201310258090XA CN 201310258090 A CN201310258090 A CN 201310258090A CN 103292106 A CN103292106 A CN 103292106A
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- Prior art keywords
- sleeve
- sleeve body
- pipeline
- capping
- sleeve barrel
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Links
- 238000007789 sealing Methods 0.000 abstract description 20
- 238000010276 construction Methods 0.000 abstract description 13
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract 9
- 238000004904 shortening Methods 0.000 abstract 1
- 239000012943 hotmelt Substances 0.000 description 27
- 230000008878 coupling Effects 0.000 description 19
- 238000010168 coupling process Methods 0.000 description 19
- 238000005859 coupling reaction Methods 0.000 description 19
- 238000003723 Smelting Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 239000000758 substrate Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006386 memory function Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 206010039792 Seborrhoea Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 208000008742 seborrheic dermatitis Diseases 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
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Abstract
The invention relates to a PE pipeline cold connecting sleeve barrel. The PE pipeline cold connecting sleeve barrel comprises a sleeve barrel body, is characterized in that a plurality of annular protruding portions integrated with the sleeve barrel body are arranged on the circumference, close to the two-end inner walls, of the sleeve barrel body, and further comprises at least two extrusion sealing covers and sealing cover clips, wherein the extrusion sealing covers are arranged in the axial direction of the outer wall of the sleeve barrel body, and the sealing cover clips are used for clamping and fastening the edge portions of the extrusion sealing covers. Clamping teeth are arranged on the inner walls of the extrusion sealing covers; the edges portions of the extrusion sealing covers are clamped through the sealing cover clips to achieve extrusion of the sleeve barrel body and pipelines. The PE pipeline cold connecting sleeve barrel has the advantages of being capable of guaranteeing the very tight sealing connection of the sleeve barrel body and the pipelines because the annular protruding portion on the circumference of the inner wall of the sleeve barrel body is tightly matched with the pipelines inserted in the sleeve barrel body in an extrusion mode, and the extrusion of the sleeve barrel body is achieved through the extrusion sealing cover and the sealing cover clips, easy, convenient and fast to operate in a field installment mode, capable of substantially shortening pipeline construction time, guaranteeing pipeline connecting quality, reducing pipeline laying construction cost, and prolonging service life of the pipelines.
Description
Technical field
The invention belongs to the pipeline connection technology field, particularly relate to the cold coupling sleeve of a kind of PE pipeline.
Background technique
At present, the construction of PE pipeline connects by existing international mode and mainly comprises three kinds of hot melt butt joint, electric smelting connection and mechanical connections.Wherein, it all is to adopt the hot melt butt joint that heavy caliber pipe, pipe fitting connect, described hot melt connect be with after tubing or the pipe fitting fusing earlier again polymerization link into an integrated entity.Minor caliber pipe goes out because the effect of pressure can produce molten seborrhea when adopting the hot melt butt joint, causes its internal diameter to dwindle, and it is unimpeded to influence current.And the PE tubing that has steel-wire carcass is when connecting; owing to can't implement the hot melt butt joint; therefore must adopt electric smelting sleeve welding manner; electric smelting sleeve complicated operation; molten fat visibility is zero; resistance wire short circuit or the unstable situation of welding occur through regular meeting, and then cause the electric smelting sleeve to scrap, strengthened construction cost.In addition, electric smelting connects all needs long electric smelting heating time and cool time, so influenced pipeline construction efficient.
Summary of the invention
The present invention for solve the technical problem that exists in the known technology provide a kind of simple in structure, connect good seal performance, be convenient to on-site construction operations and can shorten the cold coupling sleeve of PE pipeline of pipeline construction activity duration and cost significantly.
The technological scheme that the present invention takes for the technical problem that exists in the solution known technology is:
The cold coupling sleeve of a kind of PE pipeline comprises sleeve body, and described sleeve body is provided with a plurality of annular relief that are connected as a single entity with it near the circumference of two ends inwall;
Also comprise and be arranged on the capping clamp that at least two the extruding cappings being used for fastening sleeve body and PE pipeline and be used for of sleeve body outer wall on axially clamp fastening extruding cover rim portion, be shaped on the card tooth that inserts pipeline for chucking at extruding capping inwall, describedly respectively push capping and tighten its edge part by the capping clamp and realize extruding to sleeve body and pipeline.
The present invention can also adopt following technological scheme:
Described sleeve body, extruding capping and capping clamp all adopt the PE plastic production.
Be shaped on the lug boss be used to the extruding capping that is installed on described sleeve body outer wall is axial, be shaped on the groove that is installed at described lug boss, be shaped on the flange that matches with the groove that is installed on the described extruding capping inwall.
The cold coupling sleeve of a kind of PE pipeline, comprise sleeve body, described sleeve body is the two layered cylinder wall construction that axial intermediate portion is provided with connecting body, symmetry is provided with flexible buffer portion and shutoff sleeve embedded part successively between the double-deck barrel in connecting body both sides, is shaped on the slot for plug-in mounting hot melt fixed block on the circumference of described sleeve body two ends;
Comprise that also interference is fitted in shutoff sleeve embedded part on the sleeve body, shutoff sleeve that its external diameter is the undergauge structure and is inserted into hot melt fixed block in the slot, shutoff sleeve one end circumference is provided with the slot for plug-in mounting hot melt fixed block.
Described sleeve body and shutoff sleeve all adopt the PE plastic production.
The flexible buffer portion of described sleeve body is to be made of a plurality of continuous circular-arc buffer substrate tablet that is fixed between the double-deck barrel of sleeve body.
The flexible buffer portion of described sleeve body is to be made of a plurality of continuous N shape buffer substrate tablet that is fixed between the double-deck barrel of sleeve body.
Described sleeve body two ends are shaped on the recessed seam for the location, and described shutoff sleeve one end outside is shaped on the male half coupling that cooperates with the recessed seam of sleeve body.
At least be shaped on two symmetrically arranged slots for plug-in mounting hot melt fixed block on the circumference of described sleeve body two ends.
At least be provided with two symmetrically arranged slots for plug-in mounting hot melt fixed block on the described shutoff sleeve one end circumference.
Advantage and good effect that the present invention has are: because the present invention adopts technique scheme, namely closely cooperate by a plurality of annular relief on sleeve body inwall circumference and the pipeline extruding of inserting in the sleeve body, and realize sleeve body and the extruding of inserting pipeline by being arranged on two extruding cappings and the capping clamp chucking of sleeve body outer wall on axially, and the card tooth 5-2 in extruding capping and the following extruding capping tightly is stuck on the tube wall of pipeline 4, and then can guarantee the very tight sealing socket between sleeve body and the pipeline.Adopt this coupling sleeve can realize submersible, unregulated power operation.In the water supply line construction operation, adopt the cold coupling sleeve of this PE pipeline pipeline can be implemented to be connected sealing with pipe end, need not electric smelting heating time and cool time, avoided the unstable defective of resistance wire short circuit or welding, not only be convenient to on-site construction operations, simple installation and shorten the pipeline connection activity duration fast, significantly, but also can guarantee the pipeline quality of connection, reduce the pipeline construction cost greatly.The defective that stability, ductility, pliability and the memory function thereof that this cold coupling sleeve has by the PE material connects electric smelting connection or hot melt can play well to repair ends effect; Because ring compression effect in the pipeline, namely manifold pressure is more big, and its sealing is more good, and can increase the service life significantly.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the I portion three-dimensional exploded view of Fig. 1;
Fig. 3 is the embodiment of the invention 1 use state 1 schematic representation;
Fig. 4 is the embodiment of the invention 1 use state 2 schematic representation;
Fig. 5 is the structural representation of the embodiment of the invention 2; (among the figure not plug-in mounting hot melt fixed block)
Fig. 6 is the A-A sectional view of Fig. 5;
Fig. 7 is shutoff tube-in-tube structure schematic representation among the embodiment 2;
Fig. 8 is the structural representation of the embodiment of the invention 3;
Fig. 9 is the left view of Fig. 8;
Figure 10 is the embodiment of the invention 2 and embodiment's 3 use view.
Among the figure: 1, sleeve body; 1-1, flexible buffer portion; 1-2, shutoff sleeve embedded part; 1-3, connecting body; 1-4, locate recessed seam; 1-5, annular relief; 1-6, lug boss is installed; 2, shutoff sleeve; 2-1, location male half coupling; 3, hot melt fixed block; 4, pipeline; 5, extruding capping; 5-1, flange; 5-2, card tooth; 5-3, edge part; 5-3-1, draw-in groove; 6, capping clamp.
Embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
This coupling sleeve also comprises and is arranged at least two extruding capping 5 being used for fastening sleeve body and PE pipeline and the capping clamp 6 of sleeve body outer wall on axially.Described extruding capping is approximate watt shape structure, be extended with the edge part 5-3 of a substantially horizontal in the axial limit portion of extruding capping, be shaped on the described edge part be used to the draw-in groove 5-3-1 that clamps the capping clamp, be shaped on for the card tooth 5-2 that tightens the insertion pipeline at the inwall of extruding capping near port; Described extruding capping is realized sleeve body is pushed by capping clamp chucking by the edge part of each extruding capping.
In the present embodiment, described extruding capping 5 for fastening sleeve body and PE pipeline is preferably two, namely be provided with extruding capping and following extruding capping in sleeve body, two edge parts of described upward extruding capping and two edge parts of following extruding capping tighten by capping clamp 6.In order to increase the extruding force of 5 pairs of sleeve body of extruding capping, the described external diameter of going up the radius of extruding capping and following extruding capping inwall and should being slightly less than sleeve body.
In the present embodiment, described sleeve body, extruding capping and capping clamp all adopt the PE plastic production.
In the present embodiment, be shaped on the lug boss 1-6 that is installed be used to the extruding capping that is installed on described sleeve body outer wall is axial, be shaped on the inclined-plane of being convenient to suit extruding capping on the described lug boss two ends collar extension that is installed; Be shaped on the groove that is installed at the described lug boss that is installed, be shaped on the flange 5-1 that matches with the groove that is installed on the described extruding capping inwall.
The working principle of the embodiment of the invention 1 is:
See also Fig. 3 and Fig. 4, for the ease of pipeline being inserted in the sleeve body 1, operator at first need the port external process one-tenth in 2-section pipe road 4 is had the groove of 45, and this pipe joint road is inserted in the end of sleeve body 1, again another pipe joint road 4 is inserted in the other end of sleeve body 1, in the pipeline plug-in mounting enters sleeve body 1, because the extruding force of pipeline makes annular relief 1-5 that deformation take place, and press to sleeve body, by the annular relief 1-5 on the sleeve body 1 inwall circumference and pipeline chucking and sealing, as shown in Figure 3.
To go up the extruding capping then and push the overlapping portion that capping is enclosed within sleeve body and 2-section pipe road down, and extruding capping and extruding capping down in the compacting, again two capping clamps 6 are clamped on respectively on the edge part 5-3 of extruding capping and following extruding capping, make and push capping and push the overlapping portion that the capping extruding is clamped in sleeve body 1 and pipeline 4 down.At this moment, annular relief 1-5 is squeezed after the inside extruding force of capping, realizes very tight sealing with pipeline outer wall.Card tooth 5-2 in the utilization in extruding capping and the following extruding capping tightly is stuck on the tube wall of pipeline 4, is extruded sleeve body with the pipeline that prevents from being enclosed within the sleeve body under the pressurized situation, as shown in Figure 4.
Closely cooperate by a plurality of annular relief on sleeve body inwall circumference and the pipeline extruding of inserting in the sleeve body, and realize extruding to sleeve body and pipeline by being arranged on two extruding cappings and the capping clamp chucking of sleeve body outer wall on axially, and the card tooth 5-2 in extruding capping and the following extruding capping tightly is stuck on the tube wall of pipeline 4, and then can guarantee the very tight sealing socket between sleeve body and the pipeline.
The cold coupling sleeve of this PE pipeline comprises that also interference is fitted in shutoff sleeve embedded part on the sleeve body, shutoff sleeve 2 that its external diameter is the undergauge structure and is inserted into hot melt fixed block 3 in the slot, plug-in mounting hot melt fixed block not among the figure.
In the present embodiment, described sleeve body and shutoff sleeve all adopt the PE plastic production.
In the present embodiment, the flexible buffer portion 1-1 of described sleeve body is made of a plurality of continuous circular-arc buffer substrate tablet that is fixed between the double-deck barrel of sleeve body.For the ease of sleeve body and shutoff sleeve plug-in mounting location, be shaped on for the recessed seam 1-4 in location that locatees at described sleeve body two ends, be shaped on sleeve body in described shutoff sleeve one end outside and locate the location male half coupling 2-1 that recessed seam cooperates.
The cold coupling sleeve of this PE pipeline comprises that also interference is fitted in shutoff sleeve embedded part on the sleeve body, shutoff sleeve 2 that its external diameter is the undergauge structure and is inserted into hot melt fixed block 3 in the slot.
In the present embodiment, described sleeve body and shutoff sleeve all adopt the PE plastic production.
In the present embodiment, the flexible buffer portion 1-1 of described sleeve body is made of a plurality of continuous N shape buffer substrate tablet that is fixed between the double-deck barrel of sleeve body.For the ease of sleeve body and shutoff sleeve plug-in mounting location, be shaped on for the recessed seam 1-4 in location that locatees at described sleeve body two ends, be shaped on sleeve body in described shutoff sleeve one end outside and locate the location male half coupling 2-1 that recessed seam cooperates.
Among the present invention, the flexible buffer portion 1-1 of sleeve body is not limited to a plurality of continuous circular-arc buffer substrate tablets or a plurality of continuous N shape buffer substrate tablet, also can adopt the buffer substrate tablet of other form.
The embodiment of the invention 2 and embodiment's 3 working principle is:
See also Figure 10, operator at first with the end in 2-section pipe road 4 respectively with two shutoff sleeve plug-in mountings, again sleeve body 1 is sleeved on the wherein the other end in a pipe joint road 4, the other end with another pipe joint road 4 is inserted in the other end of sleeve body 1 then; This moment, two shutoff sleeves were wedged in opposite directions and interference is fitted between the double-deck barrel of sleeve body, and locate the location male half coupling location of recessed seam and shutoff sleeve one end outside by the sleeve body two ends, the shutoff sleeve tightly is squeezed between the double-deck barrel of sleeve body.At last, again hot melt fixed block 3 is packed in the slot of sleeve body and shutoff sleeve, make bottom and the tube contacts of hot melt fixed block, the side of hot melt fixed block and sleeve body and shutoff sleeve are adjacent to, with sleeve body, shutoff sleeve and pipeline fixation, can finish connection and the sealing in 2-section pipe road 4 by the hot melt fixed block.
The present invention researches and develops according to stability, ductility, pliability and memory function thereof that the PE material has, and the defective that the above-mentioned characteristic by the PE material connects electric smelting connection or hot melt can play well to repair ends effect.Because ring compression effect in the pipeline, namely manifold pressure is more big, and its sealing is more good, and can increase the service life significantly.
Claims (10)
1. the cold coupling sleeve of PE pipeline comprises sleeve body, it is characterized in that: described sleeve body is provided with a plurality of annular relief that are connected as a single entity with it near the circumference of two ends inwall;
Also comprise and be arranged on the capping clamp that at least two the extruding cappings being used for fastening sleeve body and PE pipeline and be used for of sleeve body outer wall on axially clamp fastening extruding cover rim portion, be shaped on the card tooth that inserts pipeline for chucking at extruding capping inwall, describedly respectively push capping and tighten its edge part by the capping clamp and realize extruding to sleeve body and pipeline.
2. the cold coupling sleeve of PE pipeline according to claim 1 is characterized in that: described sleeve body, extruding capping and capping clamp all adopt the PE plastic production.
3. the cold coupling sleeve of PE pipeline according to claim 2, it is characterized in that: be shaped on the lug boss be used to the extruding capping that is installed on described sleeve body outer wall is axial, be shaped on the groove that is installed at described lug boss, be shaped on the flange that matches with the groove that is installed on the described extruding capping inwall.
4. cold coupling sleeve of PE pipeline, comprise sleeve body, it is characterized in that: described sleeve body is the two layered cylinder wall construction that axial intermediate portion is provided with connecting body, symmetry is provided with flexible buffer portion and shutoff sleeve embedded part successively between the double-deck barrel in connecting body both sides, is shaped on the slot for plug-in mounting hot melt fixed block on the circumference of described sleeve body two ends;
Comprise that also interference is fitted in shutoff sleeve embedded part on the sleeve body, shutoff sleeve that its external diameter is the undergauge structure and is inserted into hot melt fixed block in the slot, shutoff sleeve one end circumference is provided with the slot for plug-in mounting hot melt fixed block.
5. the cold coupling sleeve of PE pipeline according to claim 4, it is characterized in that: described sleeve body and shutoff sleeve all adopt the PE plastic production.
6. the cold coupling sleeve of PE pipeline according to claim 5 is characterized in that: the flexible buffer portion of described sleeve body is to be made of a plurality of continuous circular-arc buffer substrate tablet that is fixed between the double-deck barrel of sleeve body.
7. the cold coupling sleeve of PE pipeline according to claim 6 is characterized in that: the flexible buffer portion of described sleeve body is to be made of a plurality of continuous N shape buffer substrate tablet that is fixed between the double-deck barrel of sleeve body.
8. the cold coupling sleeve of PE pipeline according to claim 4 is characterized in that: described sleeve body two ends are shaped on the recessed seam for the location, and described shutoff sleeve one end outside is shaped on the male half coupling that cooperates with the recessed seam of sleeve body.
9. the cold coupling sleeve of PE pipeline according to claim 4 is characterized in that: be shaped on two symmetrically arranged slots for plug-in mounting hot melt fixed block on the circumference of described sleeve body two ends at least.
10. the cold coupling sleeve of PE pipeline according to claim 4 is characterized in that: be provided with two symmetrically arranged slots for plug-in mounting hot melt fixed block at least on the described shutoff sleeve one end circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310258090.XA CN103292106B (en) | 2013-01-31 | 2013-06-25 | The cold coupling sleeve of PE pipeline |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100407511 | 2013-01-31 | ||
| CN201310040751.1 | 2013-01-31 | ||
| CN 201310040751 CN103090146A (en) | 2013-01-31 | 2013-01-31 | Poly ethylene (PE) pipeline cold joint sleeve |
| CN201310258090.XA CN103292106B (en) | 2013-01-31 | 2013-06-25 | The cold coupling sleeve of PE pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103292106A true CN103292106A (en) | 2013-09-11 |
| CN103292106B CN103292106B (en) | 2015-10-21 |
Family
ID=48203078
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310040751 Pending CN103090146A (en) | 2013-01-31 | 2013-01-31 | Poly ethylene (PE) pipeline cold joint sleeve |
| CN201310258090.XA Expired - Fee Related CN103292106B (en) | 2013-01-31 | 2013-06-25 | The cold coupling sleeve of PE pipeline |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310040751 Pending CN103090146A (en) | 2013-01-31 | 2013-01-31 | Poly ethylene (PE) pipeline cold joint sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN103090146A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972344A (en) * | 2016-05-25 | 2016-09-28 | 北京航空航天大学 | Connection structure of large-diameter enhanced pipes |
| CN109318827A (en) * | 2018-08-10 | 2019-02-12 | 三汽车制造有限公司 | Plugging device, driver's cabin and engineering truck |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967891A (en) * | 2014-05-07 | 2014-08-06 | 赵咪咪 | Butt-joint-type connecting sleeve |
| CN110158587A (en) * | 2019-06-24 | 2019-08-23 | 南京工业大学 | Connecting joint of prefabricated energy pipe pile and connecting method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2515303A (en) * | 1942-06-05 | 1950-07-18 | Isnard Freres Soc Ets | Arrangement for rapidly mounting driving or driven parts on their shafts |
| GB2022750A (en) * | 1978-06-05 | 1979-12-19 | Rothschild M L | Pipe Fittings |
| US4410479A (en) * | 1978-10-18 | 1983-10-18 | Battenfeld Maschinenfabriken Gmbh | Method of making a molded-joint assembly |
| CN2570588Y (en) * | 2002-08-28 | 2003-09-03 | 杨新才 | Quick connecting pipe joint for plastic pipe |
| CN2620158Y (en) * | 2003-04-28 | 2004-06-09 | 林岳华 | Connecting structure for plastic pipes |
| CN201043663Y (en) * | 2007-06-22 | 2008-04-02 | 南溪南山设备制造有限公司 | Quick connecting pipe fitting for plastic pipeline |
| CN203052076U (en) * | 2013-01-31 | 2013-07-10 | 李忠诚 | PE pipeline cold connection sleeve |
-
2013
- 2013-01-31 CN CN 201310040751 patent/CN103090146A/en active Pending
- 2013-06-25 CN CN201310258090.XA patent/CN103292106B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2515303A (en) * | 1942-06-05 | 1950-07-18 | Isnard Freres Soc Ets | Arrangement for rapidly mounting driving or driven parts on their shafts |
| GB2022750A (en) * | 1978-06-05 | 1979-12-19 | Rothschild M L | Pipe Fittings |
| US4410479A (en) * | 1978-10-18 | 1983-10-18 | Battenfeld Maschinenfabriken Gmbh | Method of making a molded-joint assembly |
| CN2570588Y (en) * | 2002-08-28 | 2003-09-03 | 杨新才 | Quick connecting pipe joint for plastic pipe |
| CN2620158Y (en) * | 2003-04-28 | 2004-06-09 | 林岳华 | Connecting structure for plastic pipes |
| CN201043663Y (en) * | 2007-06-22 | 2008-04-02 | 南溪南山设备制造有限公司 | Quick connecting pipe fitting for plastic pipeline |
| CN203052076U (en) * | 2013-01-31 | 2013-07-10 | 李忠诚 | PE pipeline cold connection sleeve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105972344A (en) * | 2016-05-25 | 2016-09-28 | 北京航空航天大学 | Connection structure of large-diameter enhanced pipes |
| CN105972344B (en) * | 2016-05-25 | 2018-05-01 | 北京航空航天大学 | A kind of connection structure of heavy caliber enhancing tubing |
| CN109318827A (en) * | 2018-08-10 | 2019-02-12 | 三汽车制造有限公司 | Plugging device, driver's cabin and engineering truck |
| CN109318827B (en) * | 2018-08-10 | 2024-05-07 | 三一汽车制造有限公司 | Plugging device, cab and engineering vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103292106B (en) | 2015-10-21 |
| CN103090146A (en) | 2013-05-08 |
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Granted publication date: 20151021 Termination date: 20210625 |
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