CN108644514A - A kind of concrete conveying elbow pipe and its manufacturing method - Google Patents
A kind of concrete conveying elbow pipe and its manufacturing method Download PDFInfo
- Publication number
- CN108644514A CN108644514A CN201810687487.3A CN201810687487A CN108644514A CN 108644514 A CN108644514 A CN 108644514A CN 201810687487 A CN201810687487 A CN 201810687487A CN 108644514 A CN108644514 A CN 108644514A
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- Prior art keywords
- tube layer
- concrete conveying
- inner tube
- pipe
- elbow
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 30
- 239000000956 alloy Substances 0.000 claims abstract description 20
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 20
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims abstract description 13
- 239000006260 foam Substances 0.000 claims description 21
- 229910000599 Cr alloy Inorganic materials 0.000 claims description 16
- 239000000788 chromium alloy Substances 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 2
- 229910000838 Al alloy Inorganic materials 0.000 claims 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 6
- 230000002787 reinforcement Effects 0.000 abstract description 5
- 230000035939 shock Effects 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 63
- 230000006872 improvement Effects 0.000 description 9
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000005406 washing Methods 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
- F16L43/00—Bends; Siphons
- F16L43/001—Bends; Siphons made of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
- B22D19/085—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal of anti-frictional metal
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The present invention provides a kind of concrete conveying elbow pipe, including double-deck pipe body, double-deck pipe body includes the outer tube layer that material is mild steel and the inner tube layer that material is antifriction alloy, and the thickness of inner tube layer outer arc side is gradually reduced from centre to both ends, and the thickness of inner arc side gradually increases from centre to both ends.The concrete conveying elbow pipe of the present invention, including double-deck pipe body, double-deck pipe body includes the outer tube layer that material is mild steel and the inner tube layer that material is antifriction alloy, wherein, the abrasion of concrete conveying elbow pipe and force status design in the structure combination work progress of inner tube layer, the thickness of outer arc side is gradually reduced from centre to both ends, the thickness of inner arc side gradually increases from centre to both ends, thus the reinforcement weak link of the structure of concrete conveying elbow pipe, so that the concrete conveying elbow pipe design of the present invention is more reasonable, it is wear-resisting, shock resistance, pressure-bearing is good, extend the service life of concrete conveying elbow pipe.The present invention additionally provides a kind of manufacturing methods of concrete conveying elbow pipe.
Description
Technical field
The present invention relates to concrete conveying pipe technical fields, and in particular to a kind of concrete conveying elbow pipe and its manufacturer
Method.
Background technology
Concrete is mixed according to certain proportioning by stone aggregate, cement, water and other additives.Concrete pump
Send the concrete mixer and drag pump in equipment, due to its have many advantages, such as flexibly, conveniently, it is efficient, it is high-rise to have become building at present
Important concrete conveying equipment when building, concrete pumping equipment is by concrete delivery pipe concrete conveyance to building height
Layer.
In concrete conveyance, pumping procedure, concrete delivery pipe is subjected to washing away for high pressure and concrete, general to require
Ensure 17 megapascal pressurize five minutes not booster.Bend pipe in concrete delivery pipe, effect is particularly critical, can directly affect concrete
The service life of delivery pipe, in operation process, concrete conveying elbow pipe is simultaneously by abrasive wear and impact wear, wherein interior
The failure that arc is worn out, outer arc middle part is worn out, punctures in the middle part of outer arc accounts for the 95% of bend pipe failure, and the premature wear of bend pipe accelerates therewith
The straight tube inordinate wear of connection causes the service life of concrete delivery pipe that cannot ensure, this is general existing for concrete delivery pipe
All over problem.
To solve above-mentioned technical barrier, there are many trials to design, the manufacture of concrete conveying elbow pipe.Existing market is most logical
It is single layer cast steel bend pipe, but single layer cast steel bend pipe wearability and safety in utilization are all relatively low.The double-deck hot pushing bent tubes can meet
Security requirement, but wearability is low.Wall liner ceramics ensure safety and wearability, but poor impact resistance in mild steel.Mild steel
Outer tube and various material inner tubes are compound, the structure and manufacturing process filled by cement mortar, difficult in wearability and impact resistance
In reaching good balance.
Invention content
At least one of to solve above-mentioned technical problem problem, it is an object of the present invention to provide a kind of wear-resisting, anti-
The good concrete conveying elbow pipe of impact, load performance.
The second purpose of the present invention is to provide a kind of methods of the above-mentioned concrete conveying elbow pipe of manufacture.
One aspect of the present invention provides a kind of concrete conveying elbow pipe, including double-deck pipe body, the double-deck pipe body include material
Outer tube layer and material for mild steel are the inner tube layer of antifriction alloy, and the thickness of inner tube layer outer arc side is from centre to both ends
It is gradually reduced, the thickness of inner tube layer inner arc side gradually increases from centre to both ends.
As the improvement of above-mentioned concrete conveying elbow pipe on the one hand, in the end of double-deck pipe body, the inner tube layer outer arc
The thickness of side is equal to the thickness of inner tube layer inner arc side.
As the improvement of above-mentioned concrete conveying elbow pipe on the one hand, the both ends of the double-deck pipe body are respectively welded described curved
Pipe fitting；The union elbow inner liner abrasive resistant set；Or, the union elbow is axially docked with the outer tube layer, the inner tube layer
Extend and be close to the inner wall setting of the union elbow to union elbow side.
As the improvement of above-mentioned concrete conveying elbow pipe on the one hand, the antifriction alloy is high-chromium alloy.
As the improvement of above-mentioned concrete conveying elbow pipe on the one hand, the hardness of the inner tube layer is 62-64HRC, described
The ballistic work of inner tube layer is more than 5J.
As shown in the above, concrete conveying elbow pipe of the invention, including double-deck pipe body, the double-deck pipe body include material
Matter is the outer tube layer of mild steel and the inner tube layer that material is antifriction alloy, wherein is mixed in the structure combination work progress of inner tube layer
The abrasion and force status design of solidifying soil transporting elbow, specifically, the thickness of inner tube layer outer arc side is from centre to both ends
It is gradually reduced, the thickness of inner tube layer inner arc side gradually increases from centre to both ends, and thus reinforcement concrete conveyance is curved
The weak link of the structure of pipe so that concrete conveying elbow pipe design of the invention is more reasonable, and wear-resisting, shock resistance, pressure-bearing are good, prolong
The service life of concrete conveying elbow pipe is grown.
Another aspect of the present invention provides a kind of manufacturing method of concrete conveying elbow pipe, includes the following steps：
Step 1：The outer tube layer of bend pipe is made of mild steel；
Step 2：Syphon shape foam cavity is made using foamed material, the thickness of the syphon shape foam cavity outer arc side by
Centre is gradually reduced to both ends, and the thickness of inner arc side gradually increases from centre to both ends；
Step 3：Outer tube layer liner syphon shape foam cavity, syphon shape foam type intracavitary side brushing insulating moulding coating；
Step 4：Bury sand；
Step 5：The antifriction alloy liquid of predetermined dimension is injected into syphon shape foam cavity, vacuumizes, is molded into casting
The antifriction alloy liquid of syphon shape foam type intracavitary melts the inner tube layer of formation bend pipe after foam, and inner tube layer and outer tube layer constitute double-deck
Tube body.
The improvement of manufacturing method on the one hand as above-mentioned concrete conveying elbow pipe, further includes following steps：Step 6：
The both ends end of double-deck pipe body is respectively welded union elbow, union elbow inner liner abrasive resistant set or the union elbow with outside the pipe
The axial docking of layer, the inner tube layer extend to union elbow side and are close to the inner wall setting of the union elbow.
The improvement of manufacturing method on the one hand as above-mentioned concrete conveying elbow pipe, the antifriction alloy in the step 5
Liquid is high-chromium alloy liquid, and the high-chromium alloy liquid by high-chromium alloy aqueous fusion by refining to predetermined temperature, deoxidation, skimming and desulfurization process
It is made.
The improvement of manufacturing method on the one hand as above-mentioned concrete conveying elbow pipe, in the step 2：The foam material
Material is polystyrene, is foamed by aluminium-making mould.
The improvement of manufacturing method on the one hand as above-mentioned concrete conveying elbow pipe, in the step 1：The outer tube layer
Pick molding.
The concrete conveying elbow pipe of above method manufacture, including double-deck pipe body, the double-deck pipe body include that material is low-carbon
The outer tube layer and material of steel are the inner tube layer of antifriction alloy, wherein concrete conveyance in the structure combination work progress of inner tube layer
The abrasion of bend pipe and force status design, specifically, the thickness of inner tube layer outer arc side is gradually reduced from centre to both ends,
The thickness of inner tube layer inner arc side gradually increases from centre to both ends, thus the reinforcement structure of concrete conveying elbow pipe
Weak link so that concrete conveying elbow pipe design of the invention is more reasonable, and wear-resisting, shock resistance, pressure-bearing are good, extend concrete
The service life of transporting elbow.
Description of the drawings
The attached drawing for constituting the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of axial section of the present invention；
Fig. 2 is the structural schematic diagram of radial section of the present invention.
Reference numeral：
1-2-inner tube layer of outer tube layer
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1 to Figure 2, the present invention proposes a kind of concrete conveying elbow pipe, including double-deck pipe body, the bimetallic tube
Body includes the outer tube layer 1 that material is mild steel and the inner tube layer 2 that material is antifriction alloy, the thickness of 2 outer arc side of the inner tube layer
Degree is gradually reduced from centre to both ends, and the thickness of 2 inner arc side of the inner tube layer gradually increases from centre to both ends.
As shown in the above, concrete conveying elbow pipe of the invention, including double-deck pipe body, the double-deck pipe body include material
Matter is the outer tube layer 1 of mild steel and the inner tube layer 2 that material is antifriction alloy, wherein in the structure combination work progress of inner tube layer 2
The abrasion of concrete conveying elbow pipe and force status design, specifically, the thickness of 2 outer arc side of the inner tube layer is from centre to two
Head is gradually reduced, and the thickness of 2 inner arc side of the inner tube layer gradually increases from centre to both ends, thus reinforcement concrete conveyance
The weak link of the structure of bend pipe so that concrete conveying elbow pipe design of the invention is more reasonable, and wear-resisting, shock resistance, pressure-bearing are good,
Extend the service life of concrete conveying elbow pipe.
For ease of bridge piece connector, in the end of double-deck pipe body bridge piece connector, 2 outer arc side of the inner tube layer
Thickness is equal to the thickness of 2 inner arc side of inner tube layer.
In a specific embodiment, the union elbow is respectively welded in the both ends of the double-deck pipe body, and the bend pipe connects
Head inner liner abrasive resistant set.In another alternative embodiment, the union elbow is axially docked with the outer tube layer 1, in the pipe
Layer 2 extends to union elbow side and is close to the inner wall setting of the union elbow.
Specifically, the antifriction alloy is high-chromium alloy.The hardness of the inner tube layer 2 is 62-64HRC, the inner tube layer 2
Ballistic work be more than 5J.In the example, the inner tube layer 2 of double-deck pipe body is high-chromium alloy material, and the carbide of high-chromium alloy is microcosmic
Hardness is very high, is HV1500~1800, and high-chromium alloy wear-resisting property is high, and the macrohardness of wearing layer is in HRC62 or more, and needle
To failure properties of the concrete conveying elbow pipe in transmission process, processing is optimized to 2 structure of inner tube layer, is more advantageous to and carries
Rise the service life of concrete conveying elbow pipe.
Still further aspect of the present invention provides a kind of manufacturing method of concrete conveying elbow pipe, includes the following steps：Step 1：
The outer tube layer 1 of bend pipe is made of mild steel；Step 2：Syphon shape foam cavity is made using foamed material, the syphon shape foam
The thickness of cavity outer arc side is gradually reduced from centre to both ends, and the thickness of inner arc side gradually increases from centre to both ends；Step
Rapid 3：1 liner syphon shape foam cavity of outer tube layer, syphon shape foam type intracavitary side brushing insulating moulding coating；Step 4：Bury sand；Step
5：The antifriction alloy liquid of predetermined dimension is injected into syphon shape foam cavity, is vacuumized in casting, is molded into syphon shape foam type
The antifriction alloy liquid of intracavitary melts the inner tube layer 2 of formation bend pipe after foam, and inner tube layer 2 and outer tube layer 1 constitute double-deck pipe body.
The concrete conveying elbow pipe of above method manufacture, including double-deck pipe body, the double-deck pipe body include that material is low-carbon
The outer tube layer 1 and material of steel are the inner tube layer 2 of antifriction alloy, wherein concrete is defeated in the structure combination work progress of inner tube layer 2
Abrasion and the force status design for sending bend pipe, specifically, the outer arc side of the inner tube layer 2 is the thin thick middle structure in both ends, puts down
It slips over and crosses, the thickness of the inner arc side of the inner tube layer 2 is the structure of both ends thickness intermediate thin, seamlessly transits, and thus reinforcement is mixed
The weak link of the structure of solidifying soil transporting elbow so that concrete conveying elbow pipe of the invention designs more reasonable, wear-resisting, anti-impact
Hit, pressure-bearing it is good, extend the service life of concrete conveying elbow pipe.
Preferably, further include following steps：Step 6：Union elbow is respectively welded in the both ends end of double-deck pipe body, and bend pipe connects
Head inner liner abrasive resistant set or the union elbow are axially docked with the outer tube layer 1, and the inner tube layer 2 extends to union elbow side
And it is close to the inner wall setting of the union elbow.In a specific embodiment, by the double-deck pipe body connecting flange machine in step 5
Add, the wear-resistant sleeve of high abrasion is embedded in connecting flange first, flange combination is formed, then by flange combination and metallurgical binding
Double-deck pipe body by water cooling welding procedure welding fabrication, thereby guarantee that the hardness of final molding commissure, entire bend pipe is without thin
Weak link.
Specifically, antifriction alloy liquid in the step 5 is high-chromium alloy liquid, the high-chromium alloy liquid is by by high-chromium alloy
Aqueous fusion is refined to predetermined temperature, deoxidation, skimming is made with desulfurization process, and the outer tube layer 1 of double-deck pipe body uses mild steel, liner
Using high-chromium alloy wear-resistant material, preferable metallurgical binding is formd under high temperature, it is both wear-resisting and resistance to high chromium alloy material
Etching characteristic, and have higher mechanical strength and higher shock resistance, it solves single material and other complex methods is difficult
With the solderability of reconciliation and wearability, the contradiction of impact resistance, material property advantage is made to perform to optimum degree, it is safe to use can
It leans on.
Specifically, in the step 2：The foamed material is polystyrene, and is foamed by aluminium-making mould；The step
In rapid 1：The outer tube layer 1 picks molding.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of concrete conveying elbow pipe, including double-deck pipe body, it is characterised in that：The double-deck pipe body includes that material is mild steel
Outer tube layer (1) and inner tube layer (2) that material is antifriction alloy, the thickness of inner tube layer (2) the outer arc side is from centre to two
Head is gradually reduced, and the thickness of inner tube layer (2) the inner arc side gradually increases from centre to both ends.
2. concrete conveying elbow pipe according to claim 1, it is characterised in that：In the end of double-deck pipe body, the pipe
The thickness of layer (2) outer arc side is equal to the thickness of inner tube layer (2) inner arc side.
3. concrete conveying elbow pipe according to claim 2, it is characterised in that：
Union elbow is respectively welded in the both ends of the double-deck pipe body；
The union elbow inner liner abrasive resistant set；Or, the union elbow is axially docked with the outer tube layer (1), the inner tube layer
(2) extend and be close to the inner wall setting of the union elbow to union elbow side.
4. according to claim 1-3 any one of them concrete conveying elbow pipes, it is characterised in that：The antifriction alloy is Gao Ge
Alloy.
5. concrete conveying elbow pipe according to claim 4, it is characterised in that：The hardness of the inner tube layer (2) is 62-
The ballistic work of 64HRC, the inner tube layer (2) are more than 5J.
6. a kind of manufacturing method of concrete conveying elbow pipe, which is characterized in that include the following steps：
Step 1：The outer tube layer (1) of bend pipe is made of mild steel；
Step 2：Syphon shape foam cavity is made using foamed material, the thickness of the syphon shape foam cavity outer arc side is by centre
It is gradually reduced to both ends, the thickness of inner arc side gradually increases from centre to both ends；
Step 3：Outer tube layer (1) liner syphon shape foam cavity, syphon shape foam type intracavitary side brushing insulating moulding coating；
Step 4：Bury sand；
Step 5：The antifriction alloy liquid of predetermined dimension is injected into syphon shape foam cavity, is vacuumized in casting, is molded into bend pipe
The antifriction alloy liquid of shape foam type intracavitary melts the inner tube layer (2) of formation bend pipe after foam, inner tube layer (2) and outer tube layer (1) structure
At double-deck pipe body.
7. the manufacturing method of concrete conveying elbow pipe according to claim 6, which is characterized in that further include following steps：
Step 6：Union elbow, union elbow inner liner abrasive resistant set or the union elbow and institute is respectively welded in the both ends end of double-deck pipe body
It states outer tube layer (1) axially to dock, the inner tube layer (2), which extends to union elbow side and is close to the inner wall of the union elbow, to be set
It sets.
8. the manufacturing method of concrete conveying elbow pipe according to claim 6, it is characterised in that：It is resistance in the step 5
Mill aluminium alloy is high-chromium alloy liquid, and the high-chromium alloy liquid is by refining to predetermined temperature, deoxidation, skimming and taking off high-chromium alloy aqueous fusion
Sulphur process is made.
9. the manufacturing method of concrete conveying elbow pipe according to claim 6, which is characterized in that in the step 2：It is described
Foamed material is polystyrene, is foamed by aluminium-making mould.
10. the manufacturing method of concrete conveying elbow pipe according to claim 6, which is characterized in that in the step 1：Institute
It states outer tube layer (1) and picks molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810687487.3A CN108644514A (en) | 2018-06-28 | 2018-06-28 | A kind of concrete conveying elbow pipe and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810687487.3A CN108644514A (en) | 2018-06-28 | 2018-06-28 | A kind of concrete conveying elbow pipe and its manufacturing method |
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| Publication Number | Publication Date |
|---|---|
| CN108644514A true CN108644514A (en) | 2018-10-12 |
Family
ID=63750244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810687487.3A Pending CN108644514A (en) | 2018-06-28 | 2018-06-28 | A kind of concrete conveying elbow pipe and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108644514A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110640117A (en) * | 2019-10-28 | 2020-01-03 | 谷城大成机械有限公司 | Bimetal composite pouring bent pipe for concrete conveying and manufacturing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4461498A (en) * | 1981-12-02 | 1984-07-24 | Victaulic Company Of America | Coupling members for pipeline assemblies |
| CN102109077A (en) * | 2011-01-25 | 2011-06-29 | 长沙中联重工科技发展股份有限公司 | Reducing bent pipe and pumping equipment with same |
| CN202419005U (en) * | 2011-10-28 | 2012-09-05 | 三一重工股份有限公司 | Embedded compound elbow and concrete conveying equipment |
| CN103667876A (en) * | 2013-11-21 | 2014-03-26 | 中国兵器工业第五二研究所烟台分所 | Multi-metal composite wear-resistant elbow pipe and preparation method thereof |
| CN203549241U (en) * | 2013-11-19 | 2014-04-16 | 中联重科股份有限公司 | Conveying bent pipe and concrete conveying equipment |
| CN208417908U (en) * | 2018-06-28 | 2019-01-22 | 三一汽车制造有限公司 | A kind of concrete conveying elbow pipe |
-
2018
- 2018-06-28 CN CN201810687487.3A patent/CN108644514A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4461498A (en) * | 1981-12-02 | 1984-07-24 | Victaulic Company Of America | Coupling members for pipeline assemblies |
| CN102109077A (en) * | 2011-01-25 | 2011-06-29 | 长沙中联重工科技发展股份有限公司 | Reducing bent pipe and pumping equipment with same |
| CN202419005U (en) * | 2011-10-28 | 2012-09-05 | 三一重工股份有限公司 | Embedded compound elbow and concrete conveying equipment |
| CN203549241U (en) * | 2013-11-19 | 2014-04-16 | 中联重科股份有限公司 | Conveying bent pipe and concrete conveying equipment |
| CN103667876A (en) * | 2013-11-21 | 2014-03-26 | 中国兵器工业第五二研究所烟台分所 | Multi-metal composite wear-resistant elbow pipe and preparation method thereof |
| CN208417908U (en) * | 2018-06-28 | 2019-01-22 | 三一汽车制造有限公司 | A kind of concrete conveying elbow pipe |
Non-Patent Citations (1)
| Title |
|---|
| 《轮机金属材料》编写组: "《爆炸焊接和爆炸复合材料》", 同济大学出版社, pages: 329 - 332 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110640117A (en) * | 2019-10-28 | 2020-01-03 | 谷城大成机械有限公司 | Bimetal composite pouring bent pipe for concrete conveying and manufacturing method |
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Application publication date: 20181012 |