CN102506267A - Conveying pipe and manufacturing method thereof, and pumping machine including conveying pipe - Google Patents
Conveying pipe and manufacturing method thereof, and pumping machine including conveying pipe Download PDFInfo
- Publication number
- CN102506267A CN102506267A CN2011102837271A CN201110283727A CN102506267A CN 102506267 A CN102506267 A CN 102506267A CN 2011102837271 A CN2011102837271 A CN 2011102837271A CN 201110283727 A CN201110283727 A CN 201110283727A CN 102506267 A CN102506267 A CN 102506267A
- Authority
- CN
- China
- Prior art keywords
- area
- delivery pipe
- forms
- toughness
- presumptive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a conveying pipe and a manufacturing method thereof, and a pumping machine. The disclosed conveying pipe comprises a pipe body, wherein the pipe body comprises at least one layer of pipe body; the pipe body comprises a first area and a second area which are arranged in an extending direction of the pipe body; and the hardness of the first area is larger than that of the second area, and the toughness of the second area is larger than that of the first area. The first area has higher wear resistance so that the conveying pipe also has higher wear resistance; and the second area has higher toughness so that the conveying pipe also has higher toughness; simultaneously, all parts from the inner wall to the outer wall of the pipe body have basically same characteristics so that materials of all parts of the pipe body can be utilized, thus the utilization ratio of the materials of the pipe body is improved and material waste is reduced.
Description
Technical field
The present invention relates to the conveying technology of materials such as a kind of delivering concrete, mud, particularly a kind of delivery pipe of conveying material also relates to the pumping machine that comprises this delivery pipe, and the delivery pipe production method.
Background technique
At present, when carrying out constructions work, generally use the concrete pumping machinery delivering concrete.In the delivering concrete process, concrete pump provides suitable power, makes concrete 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.Usually, 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 flows; On the other hand, delivery pipe will bear concrete pressure effect, and to higher position or than the distant place delivering concrete time, delivery pipe will bear higher pressure effect.Concrete requires the inwall of delivery pipe to have higher hardness to the erosion of delivery pipe inwall with wearing and tearing; Concrete pressure effect requires delivery pipe to have high toughness (fracture toughness is or/and impact toughness) on the whole.
Based on above-mentioned requirements, main following three types of present delivery pipe: 1) the modified delivery pipe of individual layer; 2) individual layer endoporus quenching delivery pipe; 3) two-layer compound delivery pipe.
The modified delivery pipe of individual layer is the delivery pipe that the metal body obtains through quenching with Subsequent tempering; This delivery pipe has carried out balance to hardness and toughness.Individual layer endoporus quenching delivery pipe is that the inner wall section of metal body obtains delivery pipe through Quenching Treatment; In fact this delivery pipe has formed interior layer segment and outer layer segment; Interior layer segment is through Quenching Treatment, and hardness is higher, have stronger wear-resisting property, but toughness is lower; Outer layer segment is without crossing Quenching Treatment, and hardness is lower, but toughness is higher.The two-layer compound delivery pipe comprises separate interior pipe and outer tube, and interior pipe box is in outer tube; Interior pipe hardness is higher, and toughness is lower, and outer tube hardness is low, and toughness is higher; Interior pipe is used to bear concrete erosion and wearing and tearing, and outer tube rises about protection internal layer, with the toughness that guarantees that delivery pipe is whole.
Owing to need take into account hardness and toughness, the modified delivery pipe life-span of individual layer is shorter relatively.Though individual layer endoporus quenching delivery pipe and two-layer compound delivery pipe can satisfy the requirement of actual use to hardness and toughness; But because these two kinds of delivery pipe inner wall section have different performances with outer wall section; When the worn out inner wall section of concrete, delivery pipe will subscription rate be changed; This just causes the waste of delivery pipe material easily.In the rare day by day epoch of resource, this problem is more and more outstanding.
Therefore, how when making delivery pipe keep than high wear resistance and excellent toughness, the utilization ratio that improves the delivery pipe material has become the technical barrier that perplexs those skilled in the art.This problem does not exist only in the delivery pipe that is used for delivering concrete, is present in the delivery pipe that is used for slurry conveyed, lime-ash yet.
Summary of the invention
Therefore, first purpose of the present invention is, a kind of delivery pipe that has than high wear resistance and excellent toughness is provided; Simultaneously, utilize this delivery pipe can improve the utilization ratio of delivery pipe material, reduce waste of material.
Second purpose of the present invention is to provide a kind of pumping machine that comprises this delivery pipe.
The 3rd purpose of the present invention is to provide a kind of delivery pipe making method, so that this delivery pipe has than high wear resistance and toughness, can improve the utilization ratio of this delivery pipe material simultaneously again.
Delivery pipe provided by the invention comprises pipe shaft, and said pipe shaft comprises one deck body at least; Said body is included in the first area and the second area of the extension direction layout of body; The hardness of said first area is greater than the hardness of second area, and the toughness of said second area is greater than the toughness of first area.
Optional, the said second area of at least a portion forms ring-type.
Optional, the said first area of at least a portion forms bulk, and first area that should bulk is surrounded by second area.
Optional, the said second area of at least a portion forms netted.
Optional, the said second area of at least a portion forms helical.
Optional, the said second area of at least a portion forms two opposite helicals of sense of rotation, and the said first area of at least a portion forms bulk.
Optional, at the internal face of said body, the peak of said first area is higher than the peak of said second area.
Pumping machine provided by the invention comprises basic machine and is installed in the delivery pipe on the said basic machine; Said delivery pipe is above-mentioned any delivery pipe.
First kind of delivery pipe production method provided by the invention comprises: the presumptive area to predetermined body is carried out Quenching Treatment; This presumptive area forms the first area; The zone of not carrying out Quenching Treatment forms second area, and first area and second area are arranged in the extension direction of this body.
Optional, body is heated to quenching temperature after, more said presumptive area is carried out Quenching Treatment, perhaps;
After the said presumptive area of body is heated to quenching temperature, more said presumptive area is carried out Quenching Treatment.
Second kind of delivery pipe production method provided by the invention comprises; Presumptive area to the predetermined body after quenching is carried out temper; This presumptive area forms second area; The zone of not carrying out temper forms the first area, and first area and second area are arranged in the extension direction of this body.
Delivery pipe provided by the invention comprises pipe shaft, and the body of said pipe shaft is included in the first area and the second area of the extension direction layout of body; Two zones have different hardness and toughness, and the hardness of first area is greater than the hardness of second area, and the toughness of second area is greater than the toughness of first area.Like this, the first area has higher wear-resisting property, reduces the rate of wear of delivery pipe, and then delivery pipe is had than high-wear resistance; Second area has high toughness, and then can absorb the compression shock of conveying material to body, improves the toughness of delivery pipe, and then makes delivery pipe have good toughness.Simultaneously, because the inwall of body has essentially identical characteristic to the outer wall each several part, the inside and outside of body all can keep essentially identical hardness and toughness, and then just can utilize the material of body each several part, do not have inter deterioration after, outer unavailable problem; And then there is not a problem that skin is scrapped owing to the wearing and tearing of interior layer segment; So just can improve the utilization ratio of body material, reduce waste of material.
In further technological scheme, at least a portion second area forms ring-type; Second area can upwards form an enclosed construction body week like this, improves the whole toughness of body, and then can improve the overall flexibility of delivery pipe.
In further technological scheme, the part first area forms bulk at least, and first area that should bulk is surrounded by second area; Like this, the impact that second area produces in the time of can absorbing conveying material better improves the whole toughness of delivery pipe.Further in the technological scheme, second area can form netted, and reticular structure can further improve the overall flexibility of delivery pipe.
In further technological scheme, said second area forms helical; So not only can improve the toughness in the delivery pipe cross section, can also improve the toughness on the delivery pipe centerline direction.
Providing on the basis of above-mentioned delivery pipe, the pumping machine of above-mentioned delivery pipe that comprises provided by the invention also has corresponding technique effect.
In the delivery pipe production method that provides, form the first area through the presumptive area of body is quenched, perhaps the presumptive area tempering to the body after quenching forms second area, finally forms corresponding delivery pipe; This method can obtain delivery pipe easily, and it is low to have a cost, characteristic of simple process.
Description of drawings
Fig. 1 is delivery pipe that the embodiment of the invention one provides dissects formation along center line a sectional view;
Fig. 2 is that the delivery pipe transverse cross sectional that the embodiment of the invention one provides forms sectional view;
Fig. 3 is the delivery pipe deployed configuration schematic representation that the embodiment of the invention one provides;
Fig. 3-the 1st, the delivery pipe deployed configuration schematic representation of the another kind of structure that embodiment one provides;
Fig. 4 is the part deployed configuration schematic representation of the delivery pipe that provides of the embodiment of the invention two;
Fig. 5 is the part deployed configuration schematic representation of the delivery pipe that provides of the embodiment of the invention three;
Fig. 6 is the part deployed configuration schematic representation of the delivery pipe that provides of the embodiment of the invention four;
Fig. 7 is a kind of delivery pipe production method principle schematic provided by the invention;
Fig. 8 is an another kind of delivery pipe production method principle schematic provided by the invention.
Embodiment
Describe the present invention below in conjunction with accompanying drawing, the description of this part only is exemplary and explanatory, should not be regarded as the restriction to public technology content of the present invention.
Please refer to Fig. 1 to Fig. 3, Fig. 1 is delivery pipe that the embodiment of the invention one provides dissects formation along center line a sectional view; Fig. 2 is that the delivery pipe transverse cross sectional that the embodiment of the invention one provides forms sectional view; Fig. 3 is the delivery pipe deployed configuration schematic representation that the embodiment of the invention one provides.
The delivery pipe that embodiment one provides comprises pipe shaft, can also comprise the flange or other connection set (not shown)s that are positioned at the pipe shaft two ends.As shown in the figure, pipe shaft comprises one deck body 100; And body 100 comprises some first areas 110 and some second areas 120; First area 110 and second area 120 all arrive the outer surface of body 100 from the internal surface of body 100; Like this, distribution is just gone up in the extension direction (circumferential and center line bearing of trend) of body 100 with second area 120 in first area 110.And first area 110 has different performances with second area 120; The hardness of first area 110 is greater than the hardness of second area 120, and the toughness of second area 120 is greater than the toughness of first area 110.In addition, has suitable ratio between the area that the area that takies of first area 110 and second area 120 take.
Experiment showed, when utilizing this delivery pipe that the wear resistance of this delivery pipe and toughness all can satisfy the needs of delivering concrete, have long working life, and can bear higher pressure, can reduce or prevent that the booster phenomenon from taking place.Produce possible former of this effect because: second area 120 hardness are lower, but first area 110 hardness are higher; When first area 110 internal surfaces kept concordant with second area 120 internal surfaces, there was certain running-in period in delivery pipe; In running-in period, second area 120 weares and teares than piece, and forms certain depression; But after second area 120 formed depression, first area 110 protruded from the internal surface of body 100; After running-in period, bear by first area 110 for the impact of concrete materials.Because first area 110 has higher hardness and wear-resisting property, and then can reduce the rate of wear of delivery pipe, makes delivery pipe have higher wear-resisting property.Second area 120 has high toughness, and then can absorb the compression shock of conveying material to body, and then improves the overall flexibility of delivery pipe, makes delivery pipe have good toughness.Simultaneously, owing to have essentially identical characteristic inside and outside the body 100; And then in use, can not make the problem of the whole subscription rate of delivery pipe owing to the wearing and tearing of interior layer segment; So just can utilize the material of body 100 inside and outside each several parts more fully, improve the utilization ratio of body 100 materials, reduce waste of material.
It will be understood by those skilled in the art that the ratio between the area that area that suitable adjustment first area 110 takies and second area 120 take, can make delivery pipe have different wear-resisting propertys and toughness, to satisfy the needs of carrying different material.
In addition, also can directly make the internal surface of first area 110 be set to not concordant structure,, can make first area 110 peaks be higher than the peak of second area 120 promptly with respect to the internal face of body 100 with the internal surface of second area 120; Specifically can make first area 110 to the center line of body 100 protrusion, also can make second area 120 from the internal face of body 100 to away from body 100 centerline directions depression, can shorten like this or the running-in period when avoiding the use of delivery pipe.Among the embodiment one, first area 110 is a round pie, and the shape of first area 110 can be made needs or the use needs are adjusted according to reality, also can be bulks such as cuboid, square body.
In this example, in order to improve body 100 overall flexibility, a plurality of second areas 120 keep linking to each other; According to actual needs, a plurality of first areas 110 and second area 120 are interspersed evenly distribute, like Fig. 3-1, this figure is the delivery pipe deployed configuration schematic representation of the another kind of structure that provides of embodiment one.
In order to improve the delivery pipe overall flexibility, can also form different shape connections by second area 120, to improve the ability to bear of 100 pairs of material pressures of body.Please refer to Fig. 4, this figure is the part deployed configuration schematic representation of the delivery pipe that provides of the embodiment of the invention two.Among the embodiment two, it is the ring-type at center that second area 120 forms with body 100 center lines.Like this, a plurality of second areas 120 all can upwards form an enclosed construction in 100 weeks of body, improve the overall flexibility of body 100 and delivery pipe.At this moment, first area 110 can form and second area 120 corresponding ring-types, and first area 110 also can form by other second areas 120 and be divided into strip or block structure.
In order to improve the toughness of delivery pipe, prevent that owing to first area 110 toughness are crossed the low booster that takes place it is block that first area 110 is formed, and block first area 110 is surrounded by second area 120.At this moment, also can make each second area 120 keep continuous and form netted structure.
Please refer to Fig. 5, this figure is the part deployed configuration schematic representation of the delivery pipe that provides of the embodiment of the invention three.In order to improve the toughness of delivery pipe, in the delivery pipe that embodiment three provides, second area 120 forms helical, even second area 120 extends second area 120 when the rotation of delivery pipe center line is extended on the centerline direction of body 100; So not only can improve the toughness in body 100 cross sections, can also improve the toughness on body 100 centerline directions.
Please refer to Fig. 6, this figure is the part deployed configuration schematic representation of the delivery pipe that provides of the embodiment of the invention four.In the delivery pipe that embodiment four provides, second area 120 forms two opposite helicals of sense of rotation, is shown in broken lines the sense of rotation and the track of two helix structures among the figure.Each spiral helicine structure is when delivery pipe center line rotation is extended, and second area 120 is extended on centerline direction at delivery pipe; First area 110 is block, and between two helicoidal structures; Can improve the overall flexibility of body so further.
Providing on the basis of above-mentioned delivery pipe, the present invention also provides a kind of pumping machine, and this pumping machine can comprise basic machine and delivery pipe, and delivery pipe can be above-mentioned any delivery pipe; Wherein, basic machine can comprise underframe and be installed in the jib on the underframe through vertical axis that jib comprises that several are through being laterally hinged with the armed lever that axle is hinged and connected; Delivery pipe can be straight tube or bend pipe, and is installed on the corresponding armed lever.Pumping machine can be pumping machines such as pump truck or boom.Because delivery pipe has above-mentioned technique effect, comprises that the pumping machine of this delivery pipe also has corresponding technique effect, repeats no more at this.
The material of the body of above-mentioned delivery pipe can be metal, and promptly body is formed by metal tube, also can be nonmetallic material.When the body of delivery pipe is steel pipe, can adopt following dual mode to obtain above-mentioned delivery pipe.
A kind of mode is: the presumptive area to the body of predetermined metal material is carried out Quenching Treatment, makes this zone form hardness and is higher than other regional first areas 100; Accordingly, other zones of this body, the zone of promptly not carrying out Quenching Treatment has high toughness, forms second area 120; And first area 110 and second area 120 are arranged in the extension direction of this body 100.Concrete mode can have two kinds of selections again: a kind of concrete mode is that body 100 integral body are heated to quenching temperature, again this presumptive area is carried out Quenching Treatment; Another kind of concrete mode is after the said presumptive area with body 100 is heated to quenching temperature, again this presumptive area to be carried out Quenching Treatment, and presumptive area hardness is improved.
Please refer to Fig. 7, this figure is a kind of delivery pipe production method principle schematic provided by the invention.In this delivery pipe production method; Presumptive area heating with 200 pairs of bodys 100 of load coil; Utilize cooling medium sparger 300 that water or other quenching medias are ejected on this presumptive area of body 100 again, this presumptive area is cooled off, realize Quenching Treatment this presumptive area; Improve the hardness of this presumptive area, form first area 110.Mode in body 100 outer surfaces cooling presumptive area has been shown among the figure; Because body 100 is generally thinner, therefore presumptive area is cooled off from outer surface, also can guarantee the quenching effect of body 100 internal surfaces, obtain the first area 110 that internal surface has predetermined hardness; Certainly, also can use the internal surface cooling presumptive area of suitable cooling medium sparger 300, also can make this zone form the higher first area 110 of hardness from body 100.
Another kind of mode is: after body 100 integral quenching to the predetermined metal material, the presumptive area of this body 100 is carried out temper, this presumptive area toughness is improved, form the lower second area 120 of hardness; Other do not carry out the temper zone, and hardness remains unchanged, and form the higher first area 110 of hardness; And first area 110 is arranged in the extension direction of this body 100 with second area 120.
Please refer to Fig. 8, this figure is an another kind of delivery pipe production method principle schematic provided by the invention.This delivery pipe production method is to have heated through Quenching Treatment body appropriate section with 200 pairs of load coils, forms the heating-up zone; Simultaneously, the presumptive area of utilizing cooling medium sparger 300 that water or other cooling mediums are erupted body 100, this zone is the part of above-mentioned heating-up zone.Cooling medium can make this presumptive area keep temperature not raise, and keeps lower temperature, and this presumptive area is not carried out temper, keeps higher hardness, forms the first area 110 of delivery pipe; Other parts of heating-up zone are owing to heat effect simultaneously, and temperature raises, and carries out temper, and this part hardness is reduced, and toughness improves, and forms the second area 120 of body 100.
In order to adapt to delivery pipe manufacturing needs, as shown in the figure, medium injection device 300 comprises a socket and the piston that is slidingly matched with the socket internal surface, and some outer spouts are set on the wall of socket, and socket one end communicates with the water source; According to piston structure position difference, can adjust the quantity of the outer spout that communicates with the water source, and then the diverse location of body 100 is cooled off.
Illustrated among Fig. 8 from the mode of body 100 internal surfaces cooling presumptive area, this mode can keep isolating with load coil 200, convenient temper to body; In fact, also can make presumptive area keep predetermined temperature from the outer surface of body 100,, form first area 110 so that this presumptive area keeps hardness higher with suitable medium injection device.Different according to first area 110 with second area 120 shapes; Can make the outer spout or the load coil 200 of medium injection device 300 have suitable shapes and size; The also suitable movement locus of control media sparger 300 and/or load coil 200 relative bodys 100 just can obtain the first area 110 or the second area 120 of respective shapes.
Used concrete example among this paper technological scheme provided by the invention is set forth, above embodiment's explanation just is used for helping to understand technological scheme provided by the 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 carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (11)
1. a delivery pipe comprises pipe shaft, and said pipe shaft comprises one deck body (100) at least; It is characterized in that said body (100) is included in the first area (110) and the second area (120) of the extension direction layout of body (100); The hardness of said first area (110) is greater than the hardness of second area (120), and the toughness of said second area (120) is greater than the toughness of first area (110).
2. delivery pipe according to claim 1 is characterized in that, the said second area of at least a portion (120) forms ring-type.
3. delivery pipe according to claim 1 is characterized in that, the said first area of at least a portion (110) forms block, and first area (110) that should bulk is surrounded by second area (120).
4. delivery pipe according to claim 3 is characterized in that, the said second area of at least a portion (120) forms netted.
5. delivery pipe according to claim 1 is characterized in that, the said second area of at least a portion (120) forms helical.
6. delivery pipe according to claim 5 is characterized in that, the said second area of at least a portion (120) forms two opposite helicals of sense of rotation, and the said first area of at least a portion (110) forms block.
7. according to each described delivery pipe of claim 1-6, it is characterized in that, the internal face in said body (100), the peak of said first area (110) is higher than the peak of said second area (120).
8. a pumping machine comprises basic machine and is installed in the delivery pipe on the said basic machine; It is characterized in that said delivery pipe is each described delivery pipe of claim 1 to claim 7.
9. delivery pipe production method; It is characterized in that; Presumptive area to predetermined body (100) is carried out Quenching Treatment; This presumptive area forms first area (110), and the zone of not carrying out Quenching Treatment forms second area (120), and first area (110) and second area (120) are arranged in the extension direction of this body (100).
10. delivery pipe production method according to claim 9 is characterized in that, body (100) is heated to quenching temperature after, more said presumptive area is carried out Quenching Treatment, perhaps;
After the said presumptive area of body (100) is heated to quenching temperature, more said presumptive area is carried out Quenching Treatment.
11. delivery pipe production method; It is characterized in that; Presumptive area to the predetermined body (100) after quenching is carried out temper; This presumptive area forms second area (120), and the zone of not carrying out temper forms first area (110), and first area (110) and second area (120) are arranged in the extension direction of this body (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110283727.1A CN102506267B (en) | 2011-09-22 | 2011-09-22 | A kind of delivery pipe and manufacture method thereof, comprise the pumping machine of this delivery pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110283727.1A CN102506267B (en) | 2011-09-22 | 2011-09-22 | A kind of delivery pipe and manufacture method thereof, comprise the pumping machine of this delivery pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102506267A true CN102506267A (en) | 2012-06-20 |
| CN102506267B CN102506267B (en) | 2015-12-09 |
Family
ID=46218379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110283727.1A Active CN102506267B (en) | 2011-09-22 | 2011-09-22 | A kind of delivery pipe and manufacture method thereof, comprise the pumping machine of this delivery pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102506267B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075447A (en) * | 1993-01-01 | 1993-08-25 | 张国祥 | Ribbed pressure-resistant plastic tube |
| EP1267112A1 (en) * | 2001-06-15 | 2002-12-18 | Dsm N.V. | Pressurized fluid conduit |
| CN1433942A (en) * | 2003-02-24 | 2003-08-06 | 王克发 | Cylinder shape pipe piece with inner harden layer and production method and equipment |
| CN101055054A (en) * | 2007-06-01 | 2007-10-17 | 北京路思达机械设备有限公司 | Concrete conveying pipe |
| CN201059397Y (en) * | 2007-07-06 | 2008-05-14 | 帅德国 | Material conveyer pipe having convex strip |
| CN101660635A (en) * | 2009-10-09 | 2010-03-03 | 三一重工股份有限公司 | Conveying pipe, concrete conveying machine and method for manufacturing conveying pipe |
| WO2010058965A2 (en) * | 2008-11-19 | 2010-05-27 | 주식회사 티엠시 | Concrete slurry transporting pipe for concrete pump car |
| CN201818925U (en) * | 2010-09-29 | 2011-05-04 | 张银平 | Synthetic pipe |
-
2011
- 2011-09-22 CN CN201110283727.1A patent/CN102506267B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075447A (en) * | 1993-01-01 | 1993-08-25 | 张国祥 | Ribbed pressure-resistant plastic tube |
| EP1267112A1 (en) * | 2001-06-15 | 2002-12-18 | Dsm N.V. | Pressurized fluid conduit |
| CN1433942A (en) * | 2003-02-24 | 2003-08-06 | 王克发 | Cylinder shape pipe piece with inner harden layer and production method and equipment |
| CN101055054A (en) * | 2007-06-01 | 2007-10-17 | 北京路思达机械设备有限公司 | Concrete conveying pipe |
| CN201059397Y (en) * | 2007-07-06 | 2008-05-14 | 帅德国 | Material conveyer pipe having convex strip |
| WO2010058965A2 (en) * | 2008-11-19 | 2010-05-27 | 주식회사 티엠시 | Concrete slurry transporting pipe for concrete pump car |
| CN101660635A (en) * | 2009-10-09 | 2010-03-03 | 三一重工股份有限公司 | Conveying pipe, concrete conveying machine and method for manufacturing conveying pipe |
| CN201818925U (en) * | 2010-09-29 | 2011-05-04 | 张银平 | Synthetic pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102506267B (en) | 2015-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102032397B (en) | Concrete delivery tube and preparation method thereof | |
| CN201889206U (en) | Wear-resistant roll sleeve of rolling press | |
| CN102128312A (en) | Taper pipe for concrete pumping device and manufacturing method thereof | |
| CN102216475B (en) | Concrete slurry transporting pipe for concrete pump car | |
| CN102343430A (en) | Bimetallic composite conveying pipe and production process thereof | |
| CN102829254A (en) | Metallurgical fused composite concrete conveying pipe and manufacturing method thereof | |
| CN105316565B (en) | High-strength low-hardness ferritic nodular cast iron roller ring and manufacturing method thereof | |
| CN102251187A (en) | High-speed steel, extrusion roller containing high-speed steel and production method of extrusion roller | |
| CN201973368U (en) | Composite taper pipe for concrete pumping equipment | |
| CN102776445A (en) | Lower bainite wear-resisting steel tube for slurry transport and production method of steel tube | |
| CN102913687B (en) | Manufacturing method of delivery pipe | |
| CN102233422A (en) | Composite guide plate and preparation process thereof | |
| CN102506267A (en) | Conveying pipe and manufacturing method thereof, and pumping machine including conveying pipe | |
| CN102094197A (en) | Plasma cladding method for processing dust-removal-assisting wear-resistant spiral drill stem | |
| CN101417333A (en) | Preparation method of native column/zonal hard phase composite abrasion proof impeller | |
| CN203948803U (en) | A kind of concrete pumping equipment and concrete delivery pipe | |
| KR101170834B1 (en) | Method of manufacturing concrete slurry transporting pipe for concrete pump-car | |
| CN111020370B (en) | Single-layer wear-resistant seamless steel pipe for concrete pump truck and manufacturing method thereof | |
| CN104074737B (en) | S pipe, manufacturing method thereof and concrete pumping device | |
| CN104075057A (en) | Bending pipe and manufacturing method thereof and concrete pumping device | |
| CN102937088B (en) | Glasses plate | |
| CN204017934U (en) | A kind of high life abrasion-proof steel ball | |
| CN207684192U (en) | A kind of coal delivery cylinder formula coal store | |
| CN104801376B (en) | Circular cone sand making machine fission clamping rolled mortar wall and method of the diameter less than 2000mm | |
| CN203525795U (en) | Novel grinding machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: SANY AUTOMOBILE MANUFACTURING CO., LTD. Free format text: FORMER OWNER: SANYI HEAVY INDUSTRY CO LTD Effective date: 20130502 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20130502 Address after: 31 industrial city, Changsha economic and Technological Development Zone Applicant after: SANY Automobile Manufacturing Co., Ltd. Address before: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city Applicant before: Sanyi Heavy Industry Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |