CN101660635B - Conveying pipe, concrete conveying machine - Google Patents
Conveying pipe, concrete conveying machine Download PDFInfo
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- CN101660635B CN101660635B CN200910179426A CN200910179426A CN101660635B CN 101660635 B CN101660635 B CN 101660635B CN 200910179426 A CN200910179426 A CN 200910179426A CN 200910179426 A CN200910179426 A CN 200910179426A CN 101660635 B CN101660635 B CN 101660635B
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Abstract
The invention discloses a conveying pipe used for conveying concrete, a concrete conveying machine provided with the conveying pipe, and a method for manufacturing the conveying pipe. The conveying pipe comprises a pipe orifice section and a pipe body, wherein the inner end of the pipe orifice section is fixed with the end part of the pipe body; the pipe wall of the pipe body is made of composite material which comprises resin and fiber; and the pipe wall is internally provided with an inner lining made of ultra high molecular weight polyethylene. The conveying pipe provided by the invention not only can meet the need of conveying the concrete and has the characteristics of the conveying pipe in the prior art, but also can reduce the energy consumption of the concrete conveying machine due to the extremely light weight; as the inner lining has stronger self-lubricating performance and less friction coefficient, the fouling of the conveying pipe can be reduced, the flow resistance of the concrete is less, the conveying efficiency of the concrete is improved, and the power consumption of a concrete pump is lowered; and furthermore, the invention also can avoid the safety accidents caused by pipe explosion and improve the safety of the conveying pipe.
Description
Technical field
The present invention relates to a kind of wear-resisting withstand voltage delivery pipe technology, particularly a kind of delivery pipe that is used for delivering concrete also relates to a kind of concrete conveyer with this delivery pipe, and a kind of making method of delivery pipe.
Background technique
At present, when carrying out constructions work, generally use the concrete pump delivering concrete.In the delivering concrete process, concrete pump provides suitable power, makes concrete mud suitably arrive predetermined place through conveyance conduit under the pressure effect, to carry out concrete placement or perfusion operation away from the position of mixing plant.Conveyance conduit is joined in proper order by a plurality of delivery pipes and forms.
In the delivering concrete process, on the one hand, the inwall of delivery pipe will bear persistency erosion and the wearing and tearing that produce when concrete mud flows; On the other hand, delivery pipe will bear the pressure effect of concrete mud, and to higher position or than the distant place delivering concrete time, delivery pipe will bear higher pressure effect.Concrete mud requires the inwall of delivery pipe to have higher hardness to the erosion of delivery pipe inwall with wearing and tearing; The pressure effect of concrete mud requires delivery pipe to have high toughness and impact resistance on the whole.
In order to satisfy above-mentioned requirements, current, generally be combined to form delivery pipe with interior pipe and outer tube.Interior pipe is generally metallic material and processes, and obtains higher hardness through modes such as hot working, to satisfy the hardness requirement that transmission and concrete transmission is proposed delivery pipe; But interior pipe is when obtaining higher hardness, and its toughness can reduce.For pipe embrittlement under the high pressure effect in preventing; Also at the suitable outer tube of interior pipe peripheral hardware, the metallic material of outer effective high tenacity, high tenacity is made, outside managing in being coated on; To bear the pressure effect of concrete mud; Bear compression shock, manage embrittlement in preventing, improve the bulk strength and the impact resistance of delivery pipe simultaneously.
Though existing delivery pipe can satisfy the requirement of delivering concrete to a certain extent, also comes with some shortcomings:
The first, weight is excessive.In order to guarantee integral intensity and wear-resisting property, the delivery pipe tube wall that interior pipe and outer tube form has bigger thickness, and this just makes that metal delivery pipe weight is bigger.Have the greater weight delivery pipe and can cause the bigger power consumpiton of concrete conveyer, be unfavorable for the energy-conservation of concrete conveyer.
The second, easy scale formation, thus reduce transmission and concrete transmission efficient.Because interior pipe is made by metallic material, concrete is easy to and interior pipe adhesion, and then at delivery pipe, fouling in transporting elbow especially reduces concrete transfer efficiency; When serious, can also cause the plugging of delivery pipe.
The 3rd, Safety performance is lower.The form that existing delivery pipe lost efficacy is that explosion was lost efficacy after the delivery pipe tube wall wear down, and unexpected explosion was lost efficacy and is easy to cause security incident.
The 4th, can't realize the equivalent life design in the delivery pipe.When delivering concrete, the rate of wear of the each several part of delivery pipe, particularly transporting elbow is also inequality, and the rate of wear of interior pipe outer arc part is greater than the rate of wear of inner arc part.Owing to install and the needs of assembling, the thickness that the interior pipe in the delivery pipe of the prior art is can't be according to the different designs of the each several part rate of wear different, thus can't realize the equivalent life design of pipe in the delivery pipe; This not only causes waste of material, also can shorten the maintenance period of delivery pipe.
Summary of the invention
To above-mentioned deficiency, first purpose of the present invention is, a kind of in light weight, safe delivery pipe is provided, and improves concrete transfer efficiency simultaneously.
On the basis of first purpose, second purpose of the present invention is to provide a kind of transporting elbow with equivalent life structure.
The 3rd purpose of the present invention is, a kind of concrete conveyer with above-mentioned delivery pipe is provided.
The 4th purpose of the present invention is, a kind of method of making delivery pipe is provided.
In order to realize above-mentioned first purpose; The delivering concrete delivery pipe that is used for provided by the invention comprises mouth of pipe section and pipe shaft; Said mouth of pipe section is inner fixes with the pipe shaft end; Said pipe shaft comprises tube wall and the liner that is positioned at tube wall, and said tube wall is processed by composite material, and said composite material comprises resin and fiber; Said liner is become by ultrahigh molecular weight polyethylene.
Preferably, also have the connecting plate that metallic material is processed in the said pipe shaft, said mouth of pipe section is a metal mouth of pipe section, and fixes with said connecting plate.
Preferably, said connecting plate is fixed between tube wall and the liner.
Preferably, the part of said mouth of pipe section embeds in the pipe shaft.
Preferably, said delivery pipe is a transporting elbow, and on lateral cross section, the thickness of the inner arc of said liner part is less than the thickness of its outer arc part.
Preferably, the outside from delivery pipe center line inboard to this center line, said thickness of inner lining increases gradually.
Preferably, the thickness at said outer arc part two end part is less than the thickness of this outer arc part intermediate portion.
Preferably, to intermediate portion, the thickness of said liner increases gradually from said outer arc two end part partly.
In order to realize above-mentioned second purpose, concrete conveyer provided by the invention comprises concrete pump and conveyance conduit, and said conveyance conduit links to each other with the concrete delivery side of pump, and said conveyance conduit comprises above-mentioned any delivery pipe.
In order to realize above-mentioned the 3rd purpose, the method for manufacturing delivery pipe provided by the invention comprises: become liner outer surface mulching composite in ultrahigh molecular weight polyethylene, this composite material forms tube wall, and said composite material comprises resin and fiber.
The pipe shaft of delivery pipe provided by the invention comprises tube wall and the liner that is positioned at tube wall, and tube wall is processed by composite material, and said composite material comprises resin and fiber, can be formed by resin and fiber composite; Liner is become by ultrahigh molecular weight polyethylene.Because ultra-high molecular weight polyethylene has characteristic wear-resistant, resistance to chemical attack, the liner that is become by ultrahigh molecular weight polyethylene can satisfy wear-resistant, the corrosion resistance requirement that transmission and concrete transmission proposes delivery pipe fully.The composite material that is formed by resin and fiber composite has higher-strength, can strengthen the intensity of delivery pipe externally for liner provides bigger support force, can satisfy the requirement of strength that transmission and concrete transmission proposes delivery pipe.Therefore, the needs that combine to satisfy fully delivering concrete of wear-resisting, the decay resistance of the high tenacity of delivery pipe tube wall provided by the invention and liner.And compared with prior art, delivery pipe provided by the invention also has following technique effect:
The first, because composite material has the specific strength height, specific modulus is big, tube wall weight is light especially; Ultra-high molecular weight polyethylene proportion also is merely 1/7 of steel proportion, and therefore, delivery pipe weight provided by the invention is light especially, thereby can reduce the energy consumption of concrete conveyer significantly.
The second, because ultra-high molecular weight polyethylene has stronger self-lubrication performance, can reduce the adhesion of concrete and liner, and then reduce the fouling of delivery pipe, reduce maintenance delivery pipe; And the liner internal surface that ultrahigh molecular weight polyethylene becomes is smooth, has less friction factor, makes the concrete flow dynamic resistance less, thereby can improve concrete transfer efficiency, reduces concrete conveyer, particularly the power consumpiton of concrete pump.
Three, the present invention provides in the delivery pipe; The tube wall destructive process that composite material is processed comprises a plurality of stages; Comprise a series of stages such as matrix damage, cracking, interface unsticking, fiber breakage; Therefore, can not produce the phenomenon of the existing unexpected booster of delivery pipe, and then the security incident that can avoid booster to produce; Therefore, the delivery pipe of this structure has higher Security.
Four, because composite material and ultra-high molecular weight polyethylene can absorb impact energy, have stronger impact resistance, therefore, the delivery pipe that this example provides also has the better damping performance, thereby can reduce the vibration of concrete conveyer.
In further technological scheme; Said delivery pipe also comprises connecting plate; Connecting plate embeds in the pipe shaft, and connecting plate and mouth of pipe section are fixed simultaneously, and this technological scheme can guarantee the reliability that is connected between mouth of pipe section and the pipe shaft; Overcome between nonmetallic material and the metal flange and be connected insecure problem, guarantee the reliability of delivery pipe delivering concrete.
In further technological scheme, said connecting plate can make things convenient for the making of delivery pipe like this between tube wall and liner; When making, can earlier connecting plate and liner be fixed, make tube wall then, form delivery pipe.
In further technological scheme, the part of said mouth of pipe section embeds in the pipe shaft, can improve mouth of pipe section and pipe shaft reliability of fixation further like this.
In further optimal technical scheme, said delivery pipe is a transporting elbow, utilizes the strong characteristics of designability of superhigh molecular weight polyethylene material; According to the wear law of liner, make the different piece fixture of liner that different thickness arranged, realize the equivalent life design of transporting elbow; Can make full use of superhigh molecular weight polyethylene material; Reduce the fabricating cost of delivery pipe, prolong the working life of delivery pipe, reduce the weight of delivery pipe.
In addition; The method of manufacturing delivery pipe provided by the invention; Be used to make above-mentioned delivery pipe, this method is utilized ultra-high molecular weight polyethylene and the stronger design performance of composite material, realizes combining closely of liner and composite material; Can when satisfying delivering concrete, guarantee the transportation performance of delivery pipe.
Description of drawings
Fig. 1 is the structural representation of the delivery pipe that provides of the embodiment of the invention one;
Fig. 2 is a method flow diagram of making the delivery pipe that embodiment one provides, also is the method flow diagram of making delivery pipe provided by the invention;
Fig. 3 is the structural representation of the delivery pipe that provides of the embodiment of the invention two, and this figure is a kind of structural representation of transporting elbow;
Fig. 4 is the sectional structure schematic representation of the A-A among Fig. 3.
Embodiment
In the existing technology,,, must make the interior pipe and the outer tube of delivery pipe with metallic material in order to guarantee the reliability of delivery pipe work according to traditional technical thought; In order to reduce the weight of delivery pipe, the technology path of taking is to improve the intensity of managing hardness and outer tube in the delivery pipe, simultaneously, and the thickness of pipe and outer tube in reducing.Different with the technology path of delivery pipe in the existing technology, the present invention has overcome in the existing technology from a new technology path; Make the prejudice of delivery pipe with metallic material; Less with hardness, but the stronger ultrahigh molecular weight polyethylene of wear-resisting property is made liner, makes tube wall with the composite material that intensity is higher; And the two is combined from a new angle a kind of delivery pipe to be provided to satisfy the needs of delivering concrete; And overcome the problem that composite material is connected with metal flange, guaranteed the reliability of delivery pipe work, also produced the technique effect that many existing delivery pipes fail to realize.
Describe the present invention below in conjunction with accompanying drawing, the description of this part only is exemplary and explanatory, should any restriction not arranged to protection scope of the present invention.
Should explain to be, in the presents, when the structure of delivery pipe is described, the method for making delivery pipe described, no longer the method for making delivery pipe explained separately.
Please refer to Fig. 1, this figure is the structural representation of the delivery pipe that provides of the embodiment of the invention one.
The delivery pipe that embodiment one provides comprises mouth of pipe section 100 and pipe shaft 200; On the said mouth of pipe section 100 flange arrangement can be set, to realize the reliable connection between the delivery pipe; Mouth of pipe section 100 inner ends with pipe shaft 200 are fixed.Pipe shaft 200 comprises tube wall 210 and the liner 220 that is positioned at tube wall 210; Tube wall 210 is processed by composite material, and said composite material is formed by resin and fiber composite, certainly, also can in composite material, add other materials according to actual needs, so that composite material has predetermined characteristics, satisfies actual demand.Liner 220 is become by ultrahigh molecular weight polyethylene.
As shown in Figure 1, in order to guarantee mouth of pipe section 100 and pipe shaft 200 reliability of fixation, and then guarantee the reliability of delivery pipe delivering concrete, in this example, also have the connecting plate 230 that metallic material is processed in the pipe shaft 200.Connecting plate 230 at least a portion embed in the pipe shaft body, and are adhesively fixed with the pipe shaft body, can also between connecting plate 230 and pipe shaft body, suitable cooperating structure be set, with being fixedly connected of realization connecting plate 230 and pipe shaft body.Length of thread engagement between connecting plate 230 and the pipe shaft body can be set according to actual needs, to improve the join strength between connecting plate 230 and the pipe shaft body.The mouth of pipe section 100 that metallic material is made is fixing with connecting plate 230.Because connecting plate 230 is a metallic material with mouth of pipe section 100, the connection of the two fixedly has higher reliability.Like this, be fixedly linked through connecting plate 230 between mouth of pipe section 100 and the pipe shaft 200, also have higher join strength, thereby overcome nonmetal insecure deficiency that is connected with metal parts; Further, when a plurality of delivery pipes link together through mouth of pipe section 100, can guarantee the reliability that connects between the delivery pipe.
In order to improve the reliability that mouth of pipe section 100 is connected with pipe shaft 200 further, the part of mouth of pipe section 100 is embedded in the pipe shaft 200.
Can know that according to delivery pipe fluid flow inside rule when delivering concrete, concrete mud is the most serious to washing away of delivery pipe mouth of pipe section 100 internal faces, the mouth of pipe section 100 internal face rates of wear are the fastest; Therefore, can also wear-resistant sleeve 120 be set in mouth of pipe section 100, wear-resistant sleeve 120 is processed by antifriction metal (AFM), has higher hardness, and is arranged in the endoporus of mouth of pipe section body 110, can increase the working life of mouth of pipe section 100 like this, to prolong the working life of delivery pipe.Can cooperate through being full of between wear-resistant sleeve 120 and the mouth of pipe section body 110, bonding or other modes fix.
Please refer to Fig. 2, this figure is a method flow diagram of making the delivery pipe that embodiment one provides, also is the method flow diagram of making delivery pipe provided by the invention.
In order to obtain above-mentioned delivery pipe, the method for manufacturing delivery pipe provided by the invention may further comprise the steps:
S100, mouth of pipe section 100 is fixing with connecting plate 230, form mouth of pipe connected element.
S200 is fixing with mouth of pipe connected element and liner 220; Liner 220 is become by ultrahigh molecular weight polyethylene.Connecting plate 230 and liner 220 outer wall are fixed, so that connecting plate 230 is between tube wall 210 and liner 220, and embeds in the liner 220 part of mouth of pipe section 100, to increase the reliability that is connected between mouth of pipe section 100 and the pipe shaft 200.Mouth of pipe attachment portion and liner 200 fixing modes can also be selected other concrete multiple modes for use, to adapt to specific needs.
S300 covers composite material outside the liner 200, forms tube wall 210.Can composite material be wrapped in outside the liner 200 with Stetch Wrapping Machine, composite material can be formed by resin and fiber composite, and resin can be resins such as polyester resin, epoxy resin; Fiber can be fibers such as glass fibre, graphite fiber, aramid fibre, basalt fibre; Because composite material has extremely strong designability ability, therefore, can according to actual needs tube wall 210 be processed preset thickness, also can fiber be twined with predetermined angle, to obtain have the tube wall 210 of higher-strength at predetermined direction.Certainly, when needs tube wall 210 has particular characteristic, also can be the combination of various kinds of resin, fiber also can be the combination of multiple fiber; Can also add other materials, the composite material so that acquisition has individual features makes tube wall 210 have predetermined performance, satisfies actual demand.
S400, treat composite material solidification after, carry out surface treatment and obtain delivery pipe.
Wear-resistant sleeve 120 can be selected according to actual conditions with the assembling of mouth of pipe section body 110, such as: can before step S100, carry out, also can behind composite material solidification, carry out.Different according to wear-resistant sleeve 120 and mouth of pipe section body 110 means of fixation, wear-resistant sleeve 120 is fixing with mouth of pipe section 110.
In the delivery pipe that embodiment one provides; Liner 220 is become by ultrahigh molecular weight polyethylene; Characteristics such as that ultra-high molecular weight polyethylene has is wear-resistant, resistance to chemical attack; Therefore, the liner 220 that is become by ultrahigh molecular weight polyethylene can satisfy wear-resistant, the corrosion resistance requirement that transmission and concrete transmission proposes delivery pipe fully.Tube wall 210 is processed by composite material; The composite material that is formed by resin and fiber composite has higher-strength.Tube wall 210 can externally provide bigger support force for liner 220, strengthens the intensity of delivery pipe, satisfies the requirement of strength that transmission and concrete transmission proposes delivery pipe.Therefore, the needs that combine to satisfy fully delivering concrete of wear-resisting, the decay resistance of the high tenacity of the delivery pipe tube wall 210 that provides of this example and liner 220.Further, select the ultra-high molecular weight polyethylene of suitable molecular weight just can guarantee that tube wall 210 and liner 220 have suitable expansion system, improve the reliability of delivery pipe, guarantee the intensity of delivery pipe.
Compared with prior art, the delivery pipe that provides of this example also has the technique effect that is beyond one's reach in the existing technology:
The first, because composite material has the specific strength height, specific modulus is big, tube wall 210 weight are light especially; Ultra-high molecular weight polyethylene proportion is also smaller, is about 1/7 of steel proportion, and therefore, the delivery pipe that this example provides has lightweight characteristics, thereby can reduce the energy consumption of concrete conveyer significantly, makes things convenient for the transportation of delivery pipe.
The second, because ultra-high molecular weight polyethylene also has stronger self-lubrication performance, can improve the adhesion that reduces concrete and liner 220, and then reduce the fouling of delivery pipe, reduce maintenance delivery pipe; And liner 220 internal surfaces are smooth, have less friction factor, make the concrete flow dynamic resistance less, can improve concrete transfer efficiency, reduce concrete conveyer, particularly the power consumpiton of concrete pump.
Three, this example provides in the delivery pipe; Tube wall 210 destructive process that composite material is processed comprise a plurality of stages; Comprise a series of stages such as matrix damage, cracking, interface unsticking, fiber breakage, therefore, can not produce the phenomenon of the existing unexpected booster of delivery pipe; Thereby the security incident that can avoid booster to produce reduces the loss that produced when delivery pipe lost efficacy; Therefore, the delivery pipe of this structure has higher Security.
Four, because composite material and ultra-high molecular weight polyethylene can absorb impact energy, have stronger impact resistance,, therefore, delivery pipe provided by the invention also has the better damping performance, reduces the vibration of concrete conveyer.
Please refer to Fig. 3 and Fig. 4, Fig. 3 is the structural representation of the delivery pipe that provides of the embodiment of the invention two, and this figure is a kind of structural representation of transporting elbow, and Fig. 4 is the sectional structure schematic representation of the A-A among Fig. 3.
A kind of transporting elbow basic structure that embodiment two provides is identical with embodiment one, comprises mouth of pipe section 100, pipe shaft 200, and pipe shaft comprises tube wall 210, liner 220 and connecting plate 230.
As shown in the figure, in this example, the thickness of liner 220 each several parts is inequality.On lateral cross section, the thickness of the inner arc part 221 of liner 220 is less than the thickness of its outer arc part 222.Like this; Under the identical situation of liner 220 wearing and tearing wear-resisting propertys; The rate of wear of outer arc part 222 is greater than the rate of wear of inner arc part 221; Because the thickness of outer arc part 222 so just can reduce inner arc part 221 and the gap of outer arc part between 222 working lifes greater than the thickness of inner arc part 221; As shown in Figure 3, optimized technical scheme is, on lateral cross section; The outside from delivery pipe center line P-P inboard to this center line, said liner 220 thickness increase gradually, thereby on lateral cross section; Make liner 220 each several parts have the basic working life that equates, be implemented in equivalent life design transversely.
Further; Can also on center line P-P direction, realize the equivalent life design of transporting elbow; To intermediate portion, the thickness of liner 220 is increased from the two end part of outer arc part 222 gradually, thereby make the equating basically of working life of outer arc part 222 two ends and intermediate portion; The thickness at outer arc part 222 two ends is appreciated that so long as just can reduce the gap of each several part between working life less than the thickness of intermediate portion.
Identical with embodiment one; In order to prolong the working life of transporting elbow; Also can make mouth of pipe section 100 comprise mouth of pipe section body 110 and wear-resistant sleeve 120, wear-resistant sleeve 120 is processed by antifriction metal (AFM), and is arranged in the endoporus of mouth of pipe section body 110; Can increase the working life of mouth of pipe section 100 so on the one hand, also help better realizing the equivalent life design of transporting elbow on the other hand.
Providing on the basis of above-mentioned delivery pipe; The present invention also provides a kind of concrete conveyer; This concrete conveyer comprises concrete pump and conveyance conduit, and said conveyance conduit comprises above-mentioned delivery pipe, and concrete conveyer can be concrete mixer, concrete distributing frame or the like.Because delivery pipe provided by the invention has above-mentioned technique effect, the concrete conveyer that has this delivery pipe also has the corresponding techniques effect.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (7)
1. delivery pipe; Said delivery pipe is used for delivering concrete, comprises mouth of pipe section (100) and pipe shaft (200), and said mouth of pipe section (100) is inner fixes with pipe shaft (200) end; It is characterized in that; Said pipe shaft (200) comprises tube wall (210) and is positioned at the liner (220) of tube wall (210), and said tube wall (210) is processed by composite material, and said composite material comprises resin and fiber; Said liner (220) is become by ultrahigh molecular weight polyethylene, and said delivery pipe is a transporting elbow, and on lateral cross section, the thickness of the inner arc of said liner (220) part (221) is less than the thickness of its outer arc part (222); Also have the connecting plate (230) that metallic material is processed in the said pipe shaft (200), said mouth of pipe section (100) is a metal mouth of pipe section, and fixing with said connecting plate (230).
2. delivery pipe according to claim 1 is characterized in that, said connecting plate (230) is fixed between tube wall (210) and the liner (220).
3. delivery pipe according to claim 2 is characterized in that, the part of said mouth of pipe section (100) embeds in the pipe shaft (200).
4. delivery pipe according to claim 1 is characterized in that, from the inboard outside to this center line of delivery pipe center line (P-P), said liner (220) thickness increases gradually.
5. delivery pipe according to claim 4 is characterized in that, the thickness at said outer arc part (222) two end part is less than the thickness of this outer arc part (222) intermediate portion.
6. delivery pipe according to claim 5 is characterized in that, to intermediate portion, the thickness of said liner (220) increases gradually from the two end part of said outer arc part (222).
7. a concrete conveyer comprises concrete pump and conveyance conduit, and said conveyance conduit links to each other with the concrete delivery side of pump, it is characterized in that, said conveyance conduit comprises each described delivery pipe in claim 1 to the claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910179426A CN101660635B (en) | 2009-10-09 | 2009-10-09 | Conveying pipe, concrete conveying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910179426A CN101660635B (en) | 2009-10-09 | 2009-10-09 | Conveying pipe, concrete conveying machine |
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| CN101660635A CN101660635A (en) | 2010-03-03 |
| CN101660635B true CN101660635B (en) | 2012-10-03 |
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| CN200910179426A Expired - Fee Related CN101660635B (en) | 2009-10-09 | 2009-10-09 | Conveying pipe, concrete conveying machine |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506267B (en) * | 2011-09-22 | 2015-12-09 | 三一汽车制造有限公司 | A kind of delivery pipe and manufacture method thereof, comprise the pumping machine of this delivery pipe |
| CN102705225B (en) * | 2012-05-28 | 2015-05-13 | 三一集团有限公司 | Composite concrete conveying cylinder and manufacturing method thereof, and pumping mechanism and concrete conveying pump |
| CN104879595B (en) * | 2015-06-08 | 2017-08-29 | 威海丰泰新材料科技股份有限公司 | Slurry conveys rubber pipe bend |
| CN105626979B (en) * | 2016-02-05 | 2019-01-18 | 中联重科股份有限公司 | Delivery system, delivery pipe and method of manufacturing the same |
| CN112204210A (en) * | 2018-01-31 | 2021-01-08 | 有限会社川端工业 | Piping for transporting aqueous fluid and method for transporting aqueous fluid |
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| US6224957B1 (en) * | 1996-06-24 | 2001-05-01 | Fulton Enterprises, Inc. | Anti-corrosive material |
| CN2434281Y (en) * | 2000-08-02 | 2001-06-13 | 山东建筑材料工业学院 | Hi-mid pressure concrete slurry transport compound pipeline |
| CN2697428Y (en) * | 2004-04-20 | 2005-05-04 | 孙家伦 | Composite conveying pipe for concrete conveying pump |
| CN101097035A (en) * | 2006-06-30 | 2008-01-02 | 贺建军 | Inorganic reinforced fiberglass pipe jacking and molding process |
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- 2009-10-09 CN CN200910179426A patent/CN101660635B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6224957B1 (en) * | 1996-06-24 | 2001-05-01 | Fulton Enterprises, Inc. | Anti-corrosive material |
| CN2434281Y (en) * | 2000-08-02 | 2001-06-13 | 山东建筑材料工业学院 | Hi-mid pressure concrete slurry transport compound pipeline |
| CN2697428Y (en) * | 2004-04-20 | 2005-05-04 | 孙家伦 | Composite conveying pipe for concrete conveying pump |
| CN101097035A (en) * | 2006-06-30 | 2008-01-02 | 贺建军 | Inorganic reinforced fiberglass pipe jacking and molding process |
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Application publication date: 20100303 Assignee: HUNAN ZHONGCHENG MACHINERY CO., LTD. Assignor: Sanyi Heavy Industry Co., Ltd. Contract record no.: 2013430000042 Denomination of invention: Conveying pipe, concrete conveying machine and method for manufacturing conveying pipe Granted publication date: 20121003 License type: Exclusive License Record date: 20130426 |
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