CN102878357A - Conveying pipe, concrete pumping machinery and manufacturing method of conveying pipe - Google Patents
Conveying pipe, concrete pumping machinery and manufacturing method of conveying pipe Download PDFInfo
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- CN102878357A CN102878357A CN2012103642364A CN201210364236A CN102878357A CN 102878357 A CN102878357 A CN 102878357A CN 2012103642364 A CN2012103642364 A CN 2012103642364A CN 201210364236 A CN201210364236 A CN 201210364236A CN 102878357 A CN102878357 A CN 102878357A
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- inner tube
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Abstract
The invention discloses a conveying pipe, concrete pumping machinery and a manufacturing method of the conveying pipe. The conveying pipe comprises an outer pipe, a flange and an inner pipe, wherein the flange is connected with an end of the outer pipe; the flange and the outer pipe are formed integrally; the inner pipe is arranged on the inner wall of the outer pipe and the inner wall of the flange; and the outer pipe and the flange are made of alloy materials. The flange and the outer pipe are formed integrally, and defects of air bubbles, slag inclusion, non-fusion, incomplete welding and the like at a joint of the flange and the outer pipe which are connected with each other by a welding process can be prevented, so that the product quality of the conveying pipe is improved.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of delivery pipe, have the making method of concrete pumping machinery and this delivery pipe of this delivery pipe.
Background technique
Concrete mixer is because its characteristics such as flexible, convenient, efficient become the important tool of construction industry, and the sustainable development of domestic infrastructure construction provides huge space for pump truck, and the while also has higher requirement to the pump truck various functions.
At present, the delivery pipe great majority that are used on the concrete pumping machinery are the two-layer compound conveying steel pipe, its weight is heavier, need thick jib to guarantee pumping during pumping, material had both been wasted in the increase of jib weight and the energy also makes the vibration of pump truck become more violent, thereby the loss of weight of delivery pipe is significant.In addition, the flange welding of existing delivery pipe is in the end of outer tube, therefore easily produces bubble, slag inclusion, incomplete fusion, the defective such as lack of penetration in the joint of flange and outer tube, makes delivery pipe be easy to inefficacy.
Above-mentioned two-layer compound delivery pipe often adopts the techniques such as cold-drawn, heat treatment, extruding, and its deficiency is (1) because through repeatedly cold-drawn, delivery pipe very easily occurs bending and deformation in heat treatment subsequently; (2) release of residual stress can cause the variation of delivery tube size after the cold-drawn, thereby causes the length dimension of delivery pipe to fall short of specifications; (3) part need to be clipped owing to the impact of anchor clamps chucking power in material two in Cold Drawing Process, causes stock utilization very low, and waste is serious; (4) production procedure is numerous and diverse, inefficiency.
Summary of the invention
In view of this, the present invention proposes a kind of unjointed delivery pipe, and this delivery pipe comprises outer tube, flange and inner tube, and this flange is connected with the end of this outer tube and is one-body molded with this outer tube, this inner tube is arranged on the inwall of this outer tube and this flange, and this outer tube and this flange are made by alloy material.
Further, be metallurgy combination between described inner tube and the described outer tube.
Further, described outer tube and described flange are made by aluminum alloy or Cuprum alloy.
Further, convex with for the boss that described inner tube is held in described outer tube on the inner circle wall of described flange end.
Further, the periphery wall of described inner tube end is provided with step, and described boss is held in the described step.
Further, be formed with on the periphery wall of described inner tube for the roughened surface that improves combination force between itself and described outer tube and/or the described flange inner circle wall.
Further, described inner tube is made by alloyed steel, high speed steel or wear resisting cast iron.
In addition, the present invention also provides a kind of mixed earth pumping machine with described delivery pipe.
Simultaneously, the present invention also provides a kind of making method of above-mentioned delivery pipe, comprises step 1, and inner tube is inserted in the mould as inserts; Step 2 is injected alloy solution in described mould, after cooling, formed integrated outer tube and flange at the periphery wall of described inner tube; Step 3 is cut mould, deburring to described flange; Step 4 is carried out surface treatment to described flange and described outer tube.
Further, the periphery wall in described inner tube is processed to form roughened surface before described step 1.
The flange of delivery pipe provided by the present invention and this outer tube are one-body molded, can prevent that technique by welding is connected this flange with this outer tube and produce bubble, slag inclusion, incomplete fusion, the defective such as lack of penetration in the joint, so improve the quality of product of delivery pipe.
Mixed earth pumping machine provided by the invention is provided with above-mentioned delivery pipe, because above-mentioned delivery pipe has above-mentioned technique effect, therefore, the mixed earth pumping machine that is provided with this delivery pipe also has corresponding technique effect.
In the making method of delivery pipe provided by the present invention because without cold-drawing technology, so in this outer tube and this inner tube since the residual stress that distortion produces greatly reduce so that the variation of the length dimension of delivery pipe is less.Simultaneously, again the holding portion is cut out after with its clamping with anchor clamps during this delivery pipe need not as cold-drawing technology in the process of making, therefore improved the utilization ratio of material, reduced cost of production.In addition, flange and outer tube are one-body molded by integral die-cast, need not welding procedure, have eliminated the heat affected zone of welding process generation to the impact of delivery pipe wear resistance.
Description of drawings
The accompanying drawing that consists of a part of the present invention is used to provide a further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the sectional view of the delivery pipe of preferred embodiment of the present invention.
Fig. 2 is the structure enlarged view at II place among Fig. 1.
Fig. 3 is the making method flow chart of this delivery pipe of preferred embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technological scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment who obtains under the creative work prerequisite.
See also Fig. 1 and Fig. 2, preferred embodiment of the present invention provides a kind of delivery pipe, and it is applied in the concrete conveyer, such as concrete mixer etc.
This delivery pipe comprise outer tube 1, flange 2 and be arranged at this outer tube 1 and this flange 2 inwalls on inner tube 3.
This outer tube 1 adopts that density is lower, corrosion resistance is strong, formability preferably alloy material make, preferably, this outer tube 1 is made by aluminum alloy.Therefore the aluminum alloy material lighter weight can alleviate the weight of this delivery pipe.In addition, this outer tube 1 also can adopt Cuprum alloy to make.
This flange 2 is connected with the end of this outer tube 1.The flange 2 of preferred embodiment of the present invention is one-body molded by integral die-cast with this outer tube 1, and the making material of this flange 2 is identical with the making material of this outer tube 1.Therefore, this flange 2 need not to be welded in one with this outer tube 1, has eliminated the heat affected zone of welding process generation to the impact of delivery pipe wear resistance.Simultaneously, can prevent also that technique by welding is connected this flange 2 with this outer tube 1 and produce bubble, slag inclusion, incomplete fusion, the defective such as lack of penetration in the joint, so can improve the quality of product of delivery pipe.
Particularly, convex with boss 21 on the inner circle wall of these flange 2 ends, this boss 21 is used for this inner tube 3 is held in this outer tube 1, this inner tube 3 is gone out from this outer tube 1 in the process of carrying to prevent concrete.
These inner tube 3 employing wear resistancies preferably wear-resistant metal material are made, and preferably, this wear-resistant metal material is alloyed steel, high speed steel, wear resisting cast iron etc., the working life that therefore can strengthen this delivery pipe.
Particularly, the periphery wall of the end of this inner tube 3 is provided with step 31, and this boss 21 is held in this step 31, this inner tube 3 is gone out from this outer tube 1 in the process of carrying to prevent concrete.
In above-mentioned preferred embodiment, be formed with the roughened surface for combination force between the inner circle wall of raising itself and this outer tube 1 and/or this flange 2 on the periphery wall of this inner tube 3, so that this outer tube 1 and these inner tube 3 combinations is tightr.
The present invention also provides a kind of concrete pumping machinery with above-mentioned delivery pipe, because above-mentioned delivery pipe has above-mentioned technique effect, therefore, the concrete pumping machinery that is provided with this delivery pipe also should possess corresponding technique effect, its specific implementation process is similar to the above embodiments, therefore do not give unnecessary details.
Please in conjunction with consulting Fig. 3, the present invention also provides a kind of making method of above-mentioned delivery pipe, specifically comprises the steps:
Step S1: this inner tube 3 is inserted in the mould as inserts, and these inner tube 3 employing wear resistancies preferably metallic material are made, and preferably, this inner tube 3 is made by alloyed steel, high speed steel, wear resisting cast iron or other high-abrasive material.Adopt the inserts extrusion process in this process, avoided the clearance issues in outer tube 1 and the inner tube 2 double layer material cohesive process, simplify flow, greatly improved manufacturing efficiency.
Step S2: in this mould, inject alloy solution, after cooling, formed integrated this outer tube 1 and this flange 2 at the periphery wall of this inner tube 3.This alloy solution is that density is lower, corrosion resistance is strong, formability alloy material preferably, is preferably aluminum alloy.
Particularly, in this process, because high temperature is so that the atom phase interdiffusion between the interface of this outer tube 1 and/or this flange 2 and this inner tube 3 and combination, thereby formed metallurgy combination, so that this delivery pipe has good technology capability.Certainly, combination between this outer tube 1 and/or this flange 2 and this inner tube 3 also can be mechanical bond, at this moment, need to before carrying out step S1, be processed to form roughened surface by the periphery wall in this inner tube 3, such as by fluting or process the structure such as screw thread and be formed with this roughened surface, so that the inner circle wall of this outer tube 1 and/or this flange 2 is mutually nested with the roughened surface of the periphery wall of this inner tube 3, thereby formed mechanical bond.Combination between this outer tube 1 and/or this flange 2 and this inner tube 3 also can be metallurgy combination, so that have higher adhesive strength between this outer tube 1 and this inner tube 3.
Step S3: this flange 2 is cut mould, deburring, will be connected in the clout excision on this flange 2, make this flange 2 meet usage requirement.
Step S4: this flange 2 and this outer tube 1 are carried out surface treatment, process and spray paint etc. such as anodizing, chemical passivation, with oxidation resistance, the wear-resisting property that improves this delivery pipe surface.
In the above-mentioned delivery pipe making method because without cold-drawing technology, so in this outer tube and this inner tube since the residual stress that distortion produces greatly reduce so that the variation of the length dimension of delivery pipe is less.Simultaneously, again the holding portion is cut out after with its clamping with anchor clamps during this delivery pipe need not as cold-drawing technology in the process of making, therefore improved the utilization ratio of material, reduced cost of production.In addition, flange and outer tube are one-body molded by integral die-cast, need not welding procedure, have eliminated the heat affected zone of welding process generation to the impact of delivery pipe wear resistance.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. delivery pipe, comprise outer tube (1), flange (2) and inner tube (3), it is characterized in that, described flange (2) is connected with the end of described outer tube (1) and is one-body molded with described outer tube (1), described inner tube (3) is arranged on the inwall of described outer tube (1) and described flange (2), and described outer tube (1) and described flange (2) are made by alloy material.
2. delivery pipe according to claim 1 is characterized in that, is metallurgy combination between described inner tube (3) and the described outer tube (1).
3. delivery pipe according to claim 1 is characterized in that, described outer tube (1) and described flange (2) are made by aluminum alloy or Cuprum alloy.
4. delivery pipe according to claim 3 is characterized in that, convexes with on the inner circle wall of described flange (2) end for the boss (21) that described inner tube (3) is held in described outer tube (1).
5. delivery pipe according to claim 4 is characterized in that, the periphery wall of described inner tube (3) end is provided with step (31), and described boss (21) is held in the described step (31).
6. each described delivery pipe is characterized in that according to claim 1-5, is formed with on the periphery wall of described inner tube (3) for the roughened surface that improves combination force between itself and described outer tube (1) and/or described flange (2) inner circle wall.
7. delivery pipe according to claim 1 is characterized in that, described inner tube (3) is made by alloyed steel, high speed steel or wear resisting cast iron.
8. a concrete pumping machinery is characterized in that, described concrete pumping machinery is provided with such as each described delivery pipe among the claim 1-7.
9. the making method such as each described delivery pipe among the claim 1-7 is characterized in that, comprises the steps:
Step 1 is inserted inner tube in the mould as inserts;
Step 2 is injected alloy solution in described mould, after cooling, formed integrated outer tube and flange at the periphery wall of described inner tube;
Step 3 is cut mould, deburring to described flange;
Step 4 is carried out surface treatment to described flange and described outer tube.
10. the making method of delivery pipe according to claim 9 is characterized in that, the periphery wall in described inner tube before described step 1 is processed to form roughened surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103642364A CN102878357A (en) | 2012-09-26 | 2012-09-26 | Conveying pipe, concrete pumping machinery and manufacturing method of conveying pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103642364A CN102878357A (en) | 2012-09-26 | 2012-09-26 | Conveying pipe, concrete pumping machinery and manufacturing method of conveying pipe |
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| Publication Number | Publication Date |
|---|---|
| CN102878357A true CN102878357A (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103642364A Pending CN102878357A (en) | 2012-09-26 | 2012-09-26 | Conveying pipe, concrete pumping machinery and manufacturing method of conveying pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107867554A (en) * | 2017-11-20 | 2018-04-03 | 深圳市金奥博科技股份有限公司 | Belt pipe conveyor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2098600U (en) * | 1991-08-14 | 1992-03-11 | 林泳涛 | Metal pipe with non-uniform wall thickness |
| CN2197542Y (en) * | 1994-03-25 | 1995-05-17 | 史振飞 | Iron and copper composite pipe |
| JPH11350735A (en) * | 1998-06-11 | 1999-12-21 | Ohbayashi Corp | Mixing method of accelerating agent for concrete |
| CN102278550A (en) * | 2011-07-07 | 2011-12-14 | 长沙中联重工科技发展股份有限公司 | Concrete transporting pipe and manufacturing method thereof |
-
2012
- 2012-09-26 CN CN2012103642364A patent/CN102878357A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2098600U (en) * | 1991-08-14 | 1992-03-11 | 林泳涛 | Metal pipe with non-uniform wall thickness |
| CN2197542Y (en) * | 1994-03-25 | 1995-05-17 | 史振飞 | Iron and copper composite pipe |
| JPH11350735A (en) * | 1998-06-11 | 1999-12-21 | Ohbayashi Corp | Mixing method of accelerating agent for concrete |
| CN102278550A (en) * | 2011-07-07 | 2011-12-14 | 长沙中联重工科技发展股份有限公司 | Concrete transporting pipe and manufacturing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107867554A (en) * | 2017-11-20 | 2018-04-03 | 深圳市金奥博科技股份有限公司 | Belt pipe conveyor |
| CN107867554B (en) * | 2017-11-20 | 2023-10-03 | 深圳市金奥博科技股份有限公司 | Belt type pipe feeder |
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Owner name: SANY AUTOMOBILE MANUFACTURING CO., LTD. Free format text: FORMER OWNER: SANYI HEAVY INDUSTRY CO LTD Effective date: 20130502 |
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Effective date of registration: 20130502 Address after: 410100 Changsha economic and Technological Development Zone, Hunan City, the 31 industrial city 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. |
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Application publication date: 20130116 |