WO2013086892A1 - 物料输送机械、复合结构输送管及其制造方法 - Google Patents

物料输送机械、复合结构输送管及其制造方法 Download PDF

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Publication number
WO2013086892A1
WO2013086892A1 PCT/CN2012/082687 CN2012082687W WO2013086892A1 WO 2013086892 A1 WO2013086892 A1 WO 2013086892A1 CN 2012082687 W CN2012082687 W CN 2012082687W WO 2013086892 A1 WO2013086892 A1 WO 2013086892A1
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WO
WIPO (PCT)
Prior art keywords
inner tube
outer tube
composite structure
conveying pipe
tube
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.)
Ceased
Application number
PCT/CN2012/082687
Other languages
English (en)
French (fr)
Inventor
陈保钢
许平增
郭岗
周日平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Zoomlion Special Vehicle Co Ltd
Zoomlion Heavy Industry Science and Technology Co Ltd
Original Assignee
Hunan Zoomlion Special Vehicle Co Ltd
Zoomlion Heavy Industry Science and Technology Co Ltd
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Filing date
Publication date
Application filed by Hunan Zoomlion Special Vehicle Co Ltd, Zoomlion Heavy Industry Science and Technology Co Ltd filed Critical Hunan Zoomlion Special Vehicle Co Ltd
Publication of WO2013086892A1 publication Critical patent/WO2013086892A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
    • 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
    • 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
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/06—Protection of pipes or objects of similar shape against external or internal damage or wear against wear
    • 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
    • F16L9/00—Rigid pipes
    • F16L9/22—Pipes composed of a plurality of segments

Definitions

  • the invention relates to a material conveying related technology, in particular to a composite structure conveying pipe, a manufacturing method of the composite structure conveying pipe and a material conveying machine using the composite structure conveying pipe.
  • the conveying pipe is an indispensable accessory for material conveying equipment (such as concrete pump truck, distributing machine, etc.), and the material includes concrete. Only the continuous transmission of the conveying pipe can reach the normal transportation at a long distance.
  • the conveying pipe generally requires the inner wall to have high wear resistance, and also requires good toughness as a whole, and the weight cannot be too heavy. Otherwise, the weight-restricted equipment will be overweight, and the disassembly and assembly will be difficult, which will affect the work. Efficiency, and safety is not high.
  • concrete is generally conveyed to a predetermined place by a conveying machine to perform a predetermined operation.
  • the concrete reaches the predetermined place through the conveying pipe, and the inner wall of the conveying pipe needs to continuously withstand the continuous erosion and wear of the concrete slurry, so that the conveying pipe needs to be replaced after the predetermined amount of concrete is conveyed, and the replacement is frequent.
  • the conveying pipe affects the efficiency of concrete conveying, and on the other hand increases the cost of concrete conveying.
  • Another way is to increase the wear resistance of the delivery tube by increasing the hardness of the delivery tube, thereby increasing the service life of the delivery tube.
  • the increase of hardness generally includes two ways. One is to use a special wear-resistant material to make the conveying pipe, such as casting with high-manganese steel or special wear-resistant material. The pipe made in this way is too expensive and is not suitable for concrete transportation. The second is to quench the conveying pipe to improve the hardness of the conveying pipe wall.
  • the pipe manufactured by this method has low impact resistance and toughness, especially when conveying concrete to a high place or when it is required to transport concrete more quickly. To withstand higher pressures, under the action of higher pressure, it is easy to cause the pipe to be brittle and burst, resulting in a greater safety accident.
  • FIG. 1 is a schematic cross-sectional structural view of a conveying pipe in the prior art.
  • the conveying pipe 10 has a single-layer structure including a pipe body 11 and a flange 12, wherein the pipe body 11 is usually made of steel or alloy steel, and the flange 12 is usually made of ordinary steel. Due to the need to balance the toughness and wear resistance, the conveying pipe 10 has limited inner wall wear resistance and heavy weight.
  • FIG. 2 is a schematic cross-sectional view of another conveying pipe in the prior art.
  • the conveying pipe 20 has a double-layer structure including an outer pipe 21, an inner pipe 22 and a flange 23, wherein the outer pipe 21 is usually made of high-toughness steel or composite material, and the inner pipe 22 is usually high. Wear-resistant alloy steel or ceramic, the flange 23 is usually made of ordinary steel.
  • the delivery pipe 20 has a problem of heavy weight.
  • the outer tube is made of a composite material and the inner tube is made of ultra high molecular weight polyethylene, and the outer tube has an explosion-proof function, but the outer tube has poor shear resistance, and is easily damaged or broken. , and the cost of composite materials is too high, and the practicality is not strong.
  • the double-layer tube made of steel also has the problem of heavy weight, which may make the equipment with weight limitation overweight, and also cause difficulty in disassembly and assembly, affecting work efficiency, and safety is not high;
  • the invention provides a conveying machine, a composite structure conveying pipe and a manufacturing method thereof, which can solve the prior art that the weight of the conveying pipe is heavy, the safety is not high, the shear resistance is poor, the cost is too high, and the utility is not strong. problem.
  • a technical solution adopted by the present invention is: providing a composite structure conveying pipe, the composite structure conveying pipe comprising an outer pipe and an inner pipe, the outer pipe adopting a light alloy material; the inner pipe is light in weight The inner tube is disposed in the outer tube, wherein the light alloy material is aluminum alloy, magnesium alloy or titanium alloy, and the lightweight wear-resistant material is wear-resistant ceramic, ultra-high molecular weight polyethylene or composite polyurethane.
  • the composite structure conveying pipe further comprises a flange unit integrally formed at an end of the outer pipe, the end of the inner pipe integrally forming a flange bayonet, the flange unit and the flange card The mouth is adapted to secure the inner tube within the outer tube.
  • the flange bayonet has a convex shape
  • the inner side of the flange unit has a concave ring groove shape, and is used for the boss shape
  • the flanges are fitted.
  • the outer tube is divided into two halves or more, and the two or more outer tubes are welded, riveted or screwed to surround the inner tube.
  • the composite structure conveying pipe further includes a flange unit, an end of the inner pipe protruding from an end of the outer pipe to form a mounting portion, the flange unit is sleeved on the mounting portion and the outer pipe and the outer pipe The inner tube is matched.
  • the flange unit is matched with the outer tube and the inner tube by welding, riveting or screwing.
  • Another technical solution adopted by the present invention is: Providing a material conveying machine comprising the above-mentioned composite structure conveying pipe.
  • Another technical solution adopted by the present invention is: Providing a manufacturing method of a composite structure conveying pipe, comprising the following steps:
  • an aluminum alloy, a magnesium alloy or a titanium alloy is selected as the light alloy material
  • wear-resistant ceramic In the step of forming the inner tube using the lightweight wear-resistant material, wear-resistant ceramic, ultra-high molecular weight polyethylene or composite polyurethane is selected as the lightweight wear-resistant material.
  • the method further comprises the steps of: integrally forming a flange unit at the end of the outer tube, the flange unit having a concave ring groove shape;
  • the method further comprises the steps of: integrally forming a flange of the flange at the end of the inner tube, the flange bayonet being convex;
  • the method further includes the step of: fitting the flange unit with the flange bayonet to fix the inner tube in the outer tube.
  • the method further comprises the steps of: dividing the outer tube into two or more halves, and fitting the two or more outer tubes by welding, riveting or screwing to Surround the inner tube.
  • the method further comprises the step of: projecting an end of the inner tube to an end of the outer tube to form a mounting portion.
  • the manufacturing method further comprises the following steps:
  • the flange unit is sleeved on the mounting portion and welded, riveted or screwed to the outer tube and the inner tube Match.
  • the outer tube of the composite structure conveying pipe disclosed by the invention is a low density, high strength, high toughness material, and can provide sufficient strength and toughness under a light weight.
  • the conveying pipe does not deform or burst, has better shear resistance than the composite material, is not easy to be damaged or broken, and has relatively low cost;
  • the inner tube is lightweight and wear-resistant material, which can be used under light weight. Providing sufficient wear resistance, the overall weight of the product can be reduced by more than 50% compared with the steel pipe, which makes the disassembly and assembly convenient, efficient and safe, and the process is simple, and the inner layer does not require subsequent heat treatment.
  • FIG. 1 is a schematic cross-sectional structural view of a conveying pipe in the prior art
  • FIG. 2 is a schematic cross-sectional structural view of another conveying pipe in the prior art
  • FIG. 3 is a schematic exploded view of a composite structure conveying pipe according to a preferred embodiment of the present invention
  • FIG. 4 is a schematic structural view of the composite structure conveying pipe shown in FIG. 3;
  • FIG. 5 is a schematic exploded view of a composite structure conveying pipe according to another preferred embodiment of the present invention
  • FIG. 6 is a schematic structural view of the composite structure conveying pipe shown in FIG.
  • FIG. 7 is a schematic exploded view of a composite structure conveying pipe according to another preferred embodiment of the present invention, wherein the outer pipe and the inner pipe are not combined;
  • FIG. 8 is a schematic exploded view of a composite structure conveying pipe according to another preferred embodiment of the present invention, wherein the outer pipe and the inner pipe have been combined;
  • Figure 9 is a schematic view showing the combined structure of the composite structure conveying pipe shown in Figures 7 and 8;
  • Figure 10 is a schematic enlarged cross-sectional structural view of the composite structure conveying pipe shown in Figure 9;
  • FIG. 11 is a flow chart showing a method of manufacturing a composite structure conveying pipe according to a preferred embodiment of the present invention
  • FIG. 12 is a flow chart showing a method of manufacturing a composite structure conveying pipe according to another preferred embodiment of the present invention
  • FIG. 3 is a schematic exploded view of a composite structure conveying pipe according to a preferred embodiment of the present invention
  • FIG. 4 is a schematic structural view of the composite structure conveying pipe shown in FIG.
  • the embodiment of the present invention provides a composite structure conveying pipe 30 for conveying materials.
  • the composite structure conveying pipe 30 is a commonly used straight pipe.
  • the composite structure delivery tube 30 includes an outer tube 31 and an inner tube 32.
  • the outer tube 31 is integrally formed of a light alloy material such as an aluminum alloy, a magnesium alloy or a titanium alloy;
  • the inner tube 32 is integrally formed of a lightweight wear-resistant material such as wear-resistant ceramic, ultra-high molecular weight polyethylene or composite polyurethane.
  • the wear-resistant ceramic can be integrally formed by a pressure sintering method, and the ultra-high molecular weight polyethylene and the composite polyurethane can be integrally formed by a hot press forming method; the inner tube 32 is disposed in the outer tube 31.
  • the composite structure conveying pipe 30 further includes a flange unit 33 integrally formed at an end of the outer pipe 31, and the end of the inner pipe 32 is integrally formed with a flange bayonet 322, the flange unit 33 is adapted to the flange bayonet 322 to fix the inner tube 32 in the outer tube 31.
  • the flange bayonet 322 has a boss shape, and the flange bayonet 322 shown in FIG. 3 has a continuous boss shape.
  • the flange bayonet 322 can also be a discrete boss. shape.
  • the inner side of the flange unit 33 ie, the side facing the flange mount 322 has a concave ring shape, and the concave ring-shaped flange unit 33 just receives the boss-shaped flange mount 322 on the inner side thereof.
  • the inner tube 32 is fixed in the outer tube 31.
  • the manner in which the inner tube 32 is fixed in the outer tube 31 is not limited thereto, and the above-mentioned boss-like and concave-ring groove-like structures may be reversely provided, that is, the inner side of the flange unit 33.
  • the flange bayonet 322 has a concave ring shape.
  • the specific shape of the flange 322 and the flange unit 33 is not limited to the drawings, and can be designed according to actual installation requirements.
  • the flange unit 33 can be provided with corresponding mounting holes, etc., to facilitate Connect to other external flanges.
  • the outer tube 31 is divided into two halves, and the two outer tubes 31 are welded, riveted or screwed to surround the inner tube 32, wherein the welding, riveting or screwing can be performed.
  • the outer tube 31 is not limited to being divided into two halves. In other embodiments, the outer tube 31 can be divided into more than half as needed.
  • the outer tube 31 is welded, riveted or screwed. Way The inner tube 32 is surrounded by the fit.
  • the outer tube 31 and the inner tube 32 of the composite structure conveying pipe 30 provided by the embodiment are integrally formed.
  • the outer tube 31 is a low-density, high-strength, high-toughness material, and can provide sufficient strength and toughness under a light weight.
  • the conveying pipe does not deform or burst, has better shear resistance than the composite material, is not easy to be damaged or broken, and has relatively low cost;
  • the inner tube 32 is a lightweight wear-resistant material, which can be lighter in weight. Provide sufficient wear resistance, the overall weight of the product can be reduced by more than 50% compared with the steel pipe, making the disassembly and assembly convenient, efficient and safe, and the process is simple, the inner layer does not require subsequent heat treatment.
  • the end portions of the outer tube 31 and the inner tube 32 are respectively integrally formed with a flange unit 33 and a flange bayonet 322, and the flange unit 33 is fitted with the flange bayonet 322 to fix the inner tube 32 to the outer portion.
  • the tube 31 there is no need to additionally provide a separate flange unit, eliminating the need for a separate flange unit to be welded to the outer tube and the inner tube, while ensuring the overall toughness and strength of the product.
  • FIG. 5 is a schematic exploded view of a composite structure conveying pipe according to another preferred embodiment of the present invention
  • FIG. 6 is a schematic structural view of the composite structural conveying pipe shown in FIG. .
  • an embodiment of the present invention provides a composite structure conveying pipe 40 for conveying materials.
  • the composite structure conveying pipe 40 provided in this embodiment is similar to FIG. 3 and FIG. 4 .
  • the composite structure delivery tube 30 is substantially identical.
  • the composite structure delivery tube 40 provided in this embodiment also includes an outer tube 41 and an inner tube 42.
  • the outer tube 41 is integrally formed of a light alloy material such as an aluminum alloy, a magnesium alloy or a titanium alloy;
  • the inner tube 42 is integrally formed of a lightweight wear-resistant material such as wear-resistant ceramic, ultra-high molecular weight polyethylene or composite polyurethane.
  • the wear-resistant ceramic can be integrally formed by a pressure sintering method, and the ultra-high molecular weight polyethylene and the composite polyurethane can be integrally molded by a hot press forming method; the inner tube 42 is disposed in the outer tube 41.
  • the composite structure conveying pipe 40 further includes a flange unit 43 integrally formed at an end portion of the outer tube 41, and the end portion of the inner tube 42 is integrally formed with a flange bayonet 422, the flange unit 43 is adapted to the flange bayonet 422 to fix the inner tube 42 in the outer tube 41.
  • the flange mount 422 has a boss shape, and the flange mount 422 shown in FIG. 5 has a continuous boss shape.
  • the flange mount 322 can also be a discrete boss. shape.
  • the inner side of the flange unit 43 ie, the side facing the flange mount 422 has a concave ring shape, and the concave ring-shaped flange unit 43 just receives the boss-shaped flange mount 422 on the inner side thereof.
  • the inner tube 42 is fixed in the outer tube 41.
  • the manner in which the inner tube 42 is fixed in the outer tube 41 is not limited thereto, and the above-mentioned boss-like and concave ring-shaped structures may be reversely provided, that is, the inner side of the flange unit 43.
  • the flange bayonet 422 has a concave ring shape.
  • the specific shape of the flange 422 and the flange unit 43 is not limited to the drawings, and can be designed according to actual installation requirements.
  • the flange unit 43 can be provided with corresponding mounting holes, etc., to facilitate With other external The flanges are connected.
  • the outer tube 41 is divided into two halves, and the two outer tubes 41 are welded, riveted or screwed to surround the inner tube 42, wherein the welding, riveting or screwing can be performed.
  • the outer tube 41 is not limited to being divided into two halves. In other embodiments, the outer tube 41 can be divided into more than half as needed.
  • the outer tube 41 is welded, riveted or screwed.
  • the inner tube 42 is surrounded by a pattern.
  • the composite structure conveying pipe 40 provided in this embodiment is different from the composite structure conveying pipe 30 shown in FIG. 3 and FIG. 4 in that the composite structure conveying pipe 40 provided in this embodiment is a curved pipe, and is suitable for a composite structural conveying pipe. The connection at the bend.
  • the outer tube 41 and the inner tube 42 of the composite structure conveying pipe 40 provided in this embodiment are integrally formed.
  • the outer tube 41 is a low-density, high-strength, high-toughness material, and can provide sufficient strength and toughness under a light weight.
  • the conveying pipe does not deform or burst, has better shear resistance than the composite material, is not easy to be damaged or broken, and has relatively low cost;
  • the inner tube 42 is a lightweight wear-resistant material, which can be lighter in weight. It provides sufficient wear resistance, and its overall weight can be reduced by more than 50% compared with the steel pipe. This makes the disassembly and assembly convenient, efficient and safe, and the process is simple.
  • the inner layer does not require subsequent heat treatment.
  • the end portions of the outer tube 41 and the inner tube 42 are respectively integrally formed with a flange unit 43 and a flange bayonet 422, and the flange unit 43 is fitted with the flange bayonet 422 to fix the inner tube 42 to the outer portion.
  • the tube 41 there is no need to additionally provide a separate flange unit, which eliminates the need for a separate flange unit to be welded to the outer tube and the inner tube, while ensuring the overall toughness and strength of the product.
  • an embodiment of the present invention provides a composite structure conveying pipe 50.
  • the composite structure conveying pipe 50 includes an outer pipe 51, an inner pipe 52, and a flange unit 53, wherein the outer pipe 51 and The flange unit 53 is made of a light alloy material such as an aluminum alloy, a magnesium alloy or a titanium alloy;
  • the inner tube 52 is integrally formed of a lightweight wear-resistant material such as wear-resistant ceramic, ultra-high molecular weight polyethylene or composite polyurethane, specifically, resistant
  • the grinding ceramics may be integrally formed by a pressure sintering method, and the ultrahigh molecular weight polyethylene and the composite polyurethane may be integrally formed by a hot press forming method;
  • the inner tube 52 is disposed in the outer tube 51, the outer tube 51 and the inner tube The 52 has an adapted diameter, and the inner tube 52 can be placed in the outer tube 51 by extrusion.
  • the end of the inner tube 52 protrudes from the end of the outer tube 51 to form a mounting portion 522.
  • the flange unit 53 is sleeved on the mounting portion 522 and the inner tube 51 and the inner portion.
  • the tubes 52 are mated.
  • the flange unit 53 can be matched with the outer tube 51 and the inner tube 52 by welding, riveting or screwing, wherein For the manner of soldering, riveting or screwing, refer to the methods commonly used in the prior art, and details are not described herein again.
  • the specific shape of the flange unit 53 is not limited to that shown in the drawings, and it can be designed according to actual installation requirements.
  • the outer tube 51 and the inner tube 52 of the composite structure conveying pipe 50 provided by the embodiment are integrally formed.
  • the outer tube 51 is a low-density, high-strength, high-toughness material, and can provide sufficient strength and toughness under a light weight.
  • the conveying pipe is not deformed or burst;
  • the inner tube 52 is a lightweight wear-resistant material, which can provide sufficient wear resistance under a light weight, and the overall weight can be reduced by more than 50% compared with the steel conveying pipe.
  • the present invention also provides a conveying machine (not shown) for conveying material, the conveying machine comprising the above-described composite structure conveying pipe.
  • the present invention further provides a method for manufacturing a composite structure conveying pipe, comprising the following steps: Step S11: forming an outer tube by using a light alloy material, for example, selecting an aluminum alloy, a magnesium alloy or a titanium alloy as the light weight. alloy;
  • Step S12 forming an inner tube by using a light wear-resistant material, for example, using wear-resistant ceramics, ultra-high molecular weight polyethylene or composite polyurethane as the lightweight wear-resistant material;
  • Step S13 The inner tube is disposed in the outer tube, and the specific manner is described below.
  • FIG. 12 is a schematic flow chart of a method of manufacturing a composite structure conveying pipe according to another preferred embodiment of the present invention.
  • the manufacturing method of the composite structure conveying pipe comprises the following steps:
  • Step S21 forming an inner tube and an outer tube, the specific forming manner is similar to that shown in FIG. 11, and the description is not repeated here; step S22, integrally forming a flange unit at the end of the outer tube, the flange unit is a concave ring Step S23, integrally forming a flange bayonet at the end of the inner tube, the flange bayonet having a boss shape; step S24, the concave ring groove-shaped flange unit and the boss-like shape
  • the flange end is adapted to fix the inner tube in the outer tube, for example, the outer tube is divided into two halves, and the two outer tubes are matched by welding, riveting or screwing to surround the inner tube
  • the outer tube can also be divided into a plurality of parts, and the outer tube is matched by welding, riveting or screwing to surround the inner tube.
  • the manufacturing method of the composite structure conveying pipe provided by the embodiment is simple in process, wherein the end portions of the outer pipe and the inner pipe are respectively integrally formed with a flange unit and a flange bayonet, and no separate flange unit is required, thereby eliminating the independence.
  • the flange unit requires a welding process with the outer and inner tubes, while ensuring the overall toughness and strength of the product.
  • FIG. 13 is a schematic flow chart of a method for manufacturing a composite structure conveying pipe according to another preferred embodiment of the present invention.
  • the manufacturing method of the composite structure conveying pipe comprises the following steps:
  • Step S31 forming an inner tube and an outer tube, the specific forming manner is similar to that shown in FIG. 11, and the description is not repeated herein, wherein the inner tube and the outer tube have an adapted diameter;
  • Step S32 inserting the inner tube into the outer tube by extrusion, and protruding the end of the inner tube to the end of the outer tube to form a mounting portion;
  • Step S33 forming a flange unit by using a light alloy material, the flange unit having an adapted diameter with the inner tube; and step S34, the flange unit is sleeved on the mounting portion and welded, riveted or screwed
  • the manner of the outer tube and the inner tube is matched, and the manner of welding, riveting or screwing can be referred to the common manner in the prior art, and details are not described herein again.
  • the manufacturing method of the composite structure conveying pipe provided by the invention is simple in process, and the prepared composite structure conveying pipe has compact structure, good toughness and good overall strength.
  • the outer tube of the composite structure conveying pipe disclosed by the present invention is a low density, high strength, high toughness material, and can provide sufficient strength and toughness under a light weight to make the conveying pipe not
  • the deformation does not burst, it has better shear resistance than the composite material, is not easy to be damaged or broken, and the cost is relatively low
  • the inner tube is lightweight and wear-resistant material, which can provide enough under light weight. Wear resistance, the overall weight of the product can be reduced by more than 50% compared with the steel pipe, which makes the disassembly and assembly convenient, efficient and safe, and the process is simple, and the inner layer does not require subsequent heat treatment.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Air Transport Of Granular Materials (AREA)

Abstract

公开了一种复合结构输送管（30），该复合结构输送管包括外管（31）和内管（32），该外管（31）采用轻质合金材料；该内管（32）采用轻质耐磨材料；该内管（32）设于该外管（31）内。还公开一种包括该复合结构输送管的物料输送机械和一种制造该复合结构输送管的方法。该复合结构输送管外管为低密度、高强度、高韧性材料，相比复合材料具有更好的抗剪切能力，且成本相对较低；内管为轻质耐磨材料，整体重量相比钢材的输送管可减轻50%以上，拆装方便、效率及安全性均大为提高。

Description

物料输送机械、 复合结构输送管及其制造方法
技术领域
本发明涉及物料输送相关技术， 具体涉及一种复合结构输送管， 还涉及该复合结 构输送管的制造方法及使用该复合结构输送管的物料输送机械。 背景技术
输送管是物料输送设备 （如混凝土泵车、 布料机等） 必不可少的配套件， 物料包 括混凝土等， 只有通过输送管的连续传输才能达到远距离正常输送。
输送管一般要求内壁具有较高的耐磨性， 还要求整体具有较好的韧性， 此外重量 也不能太重， 否则将会使有重量限制的设备超重， 同时还造成拆装难度大， 影响工作效 率， 且安全性不高。
目前， 在进行建筑作业时， 一般通过输送机械将混凝土输送到预定的地点， 以实 施预定的作业。 在输送混凝土过程中， 混凝土通过输送管到达预定的地点， 而输送管内 壁需要持续承受混凝土泥浆的不断冲蚀和磨损，这样，输送管在输送预定量的混凝土后， 就需要更换， 频繁的更换输送管一方面会影响混凝土输送的效率， 另一方面也增加了混 凝土输送的成本。
为了减少输送管的更换频率， 降低混凝土的输送成本， 当前已经采用了多种技术 方案来延长输送管的使用寿命。 根据其原理的不同， 大致包括两种方式。
一种方式是通过增加输送管的壁厚以提高输送管的使用寿命， 进而减少输送管的 更换频率。 但这种方法无疑会加大工程机械臂架的重量， 在输送混凝土泥浆时， 非常容 易使臂架过载， 严重时会导致臂架支撑断裂、 臂架侧板开裂等问题， 造成安全事故。
另一种方式是通过提高输送管的硬度以增加输送管的耐磨性， 进而增加输送管的 使用寿命。 增加硬度一般又包括两种方式， 一是用特殊耐磨材料制作输送管， 如用高锰 钢或特殊耐磨材料铸造， 这种方式制作的输送管成本过高， 不适用于混凝土的输送。 二 是对输送管进行淬火处理， 以提高输送管壁的硬度， 这种方法制造的输送管的抗冲击性 和韧性较低， 特别在向高处或需要更快地输送混凝土时， 输送管都要承受较高的压力， 在较高压力作用下， 容易导致输送管脆裂、 爆管， 造成更大的安全事故。
因此， 通过增加输送管的壁厚或提高输送管硬度的方式来延长其使用寿命的方法 都存在安全性隐患。 举例而言， 请参阅图 1， 图 1是现有技术中一种输送管的截面结构示意图。 如图 1 所示， 该输送管 10为单层结构， 包括管体 11和法兰 12， 其中， 该管体 11通常采用钢 或合金钢， 该法兰 12通常采用普通钢。 该输送管 10因需兼顾韧性及耐磨性， 其内壁耐 磨性受限， 同时重量偏重。
请参阅图 2， 图 2是现有技术中另一种输送管的截面结构示意图。 如图 2所示， 该 输送管 20为双层结构， 包括外管 21、 内管 22以及法兰 23， 其中， 该外管 21通常采用 高韧钢或复合材料， 该内管 22通常采用高耐磨合金钢或陶瓷， 该法兰 23通常采用普通 钢。
同样， 该输送管 20也存在重量偏重的问题。
此外， 现有技术中还有一种外管采用复合材料、 内管采用超高分子量聚乙烯的双 层管， 其外管有防爆功能， 但外管抗剪切能力差， 易碰伤或摔坏， 且复合材料成本过高， 实用性并不强。
由此可见， 现有技术中的输送管至少具有如下缺点：
1、 单层管因需兼顾韧性及耐磨性， 其内壁耐磨性受限， 同时重量偏重；
2、 采用钢材质的双层管也存在重量偏重的问题， 有可能会使有重量限制的设备超 重， 同时还造成拆装难度大， 影响工作效率， 且安全性不高；
3、 采用复合材料外管的双层管虽然重量较轻， 但外管抗剪切能力差， 易碰伤或摔 坏， 且复合材料成本过高， 实用性并不强。 发明内容
本发明提供一种输送机械、 复合结构输送管及其制造方法， 能够解决现有技术中 输送管存在的重量偏重、安全性不高、抗剪切能力差、成本过高以及实用性不强的问题。
为解决上述技术问题， 本发明采用的一个技术方案是： 提供一种复合结构输送管， 该复合结构输送管包括外管和内管， 该外管采用轻质合金材料； 该内管采用轻质耐磨材 料； 该内管设于该外管内， 其中， 该轻质合金材料为铝合金、 镁合金或钛合金， 该轻质 耐磨材料为耐磨陶瓷、 超高分子量聚乙烯或复合聚氨酯。
其中， 该复合结构输送管还包括法兰单元， 该法兰单元一体成型于该外管的端部， 该内管的端部一体成型有法兰卡口，该法兰单元与该法兰卡口适配以将该内管固定于该 外管内。
其中， 该法兰卡口呈凸台状， 该法兰单元的内侧呈凹环槽状， 用于与该凸台状的 法兰卡口相适配。
其中， 该外管分为两半或多半， 该两半或多半外管采用焊接、 铆接或螺接的方式 相配合将该内管包围。
其中， 该复合结构输送管还包括法兰单元， 该内管的端部突出于该外管的端部以 形成安装部， 该法兰单元套设于该安装部上并与该外管和该内管相配合。
其中， 该法兰单元采用焊接、 铆接或螺接的方式与该外管和该内管相配合。
为解决上述技术问题， 本发明采用的另一个技术方案是： 提供一种物料输送机械， 该物料输送机械包括上述的复合结构输送管。
为解决上述技术问题， 本发明采用的另一个技术方案是： 提供一种复合结构输送 管的制造方法， 包括以下步骤：
采用轻质合金材料形成外管；
采用轻质耐磨材料形成内管； 以及
将该内管设于该外管内；
其中， 在该采用轻质合金材料形成外管的步骤中， 选用铝合金、 镁合金或钛合金 作为该轻质合金材料；
在该采用轻质耐磨材料形成内管的步骤中， 选用耐磨陶瓷、 超高分子量聚乙烯或 复合聚氨酯作为该轻质耐磨材料。
其中， 在该采用轻质合金材料形成外管的步骤中， 还包括步骤： 在该外管的端部 一体成型法兰单元， 该法兰单元呈凹环槽状；
在采用轻质耐磨材料形成内管的步骤中， 还包括步骤： 在内管的端部一体成型法 兰卡口， 该法兰卡口呈凸台状；
在将该内管设于该外管内的步骤中， 还包括步骤： 将该法兰单元与该法兰卡口适 配以使该内管固定于该外管内。
在将该内管设于该外管内的步骤中， 还包括步骤： 将该外管分为两半或多半制造， 采用焊接、 铆接或螺接的方式将该两半或多半外管相配合以包围该内管。
其中， 在将该内管设于该外管内的步骤中， 还包括步骤： 使该内管的端部突出于 该外管的端部以形成安装部。
其中， 该制造方法进一步包括以下步骤：
采用轻质合金材料形成法兰单元；
将该法兰单元套设于该安装部上并采用焊接、 铆接或螺接的方式与该外管和内管 相配合。
本发明的有益效果是： 区别于现有技术的情况， 本发明公开的复合结构输送管外 管为低密度、 高强度、 高韧性材料， 可在较轻的重量下提供足够的强度及韧性使输送管 不变形也不爆裂， 相比复合材料具有更好的抗剪切能力， 不易碰伤或摔坏， 且成本相对 较低； 内管为轻质耐磨材料， 可在较轻的重量下提供足够的耐磨性， 产品的整体重量相 比钢材的输送管可减轻 50%以上， 使得拆装方便、 效率及安全性均大为提高， 且工艺简 单， 内层不需要后续的热处理。 附图说明
为了更清楚地说明本发明实施例中的技术方案， 下面将对实施例描述中所需要使 用的附图作简单地介绍， 显而易见地， 下面描述中的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动的前提下， 还可以根据这些附图获 得其他的附图， 其中：
图 1是现有技术中一种输送管的截面结构示意图；
图 2是现有技术中另一种输送管的截面结构示意图；
图 3是根据本发明一优选实施例的复合结构输送管的分解结构示意图； 图 4是图 3中所示的复合结构输送管的组合结构示意图；
图 5是根据本发明另一优选实施例的复合结构输送管的分解结构示意图； 图 6是图 5中所示的复合结构输送管的组合结构示意图；
图 7 是根据本发明另一优选实施例的复合结构输送管的分解结构示意图， 其中， 外管与内管未组合；
图 8 是根据本发明另一优选实施例的复合结构输送管的分解结构示意图， 其中， 外管与内管已组合；
图 9是图 7和图 8中所示的复合结构输送管的组合结构示意图；
图 10是图 9所示的复合结构输送管的放大截面结构示意图；
图 11是根据本发明一优选实施例的复合结构输送管的制造方法的流程示意图； 图 12是根据本发明另一优选实施例的复合结构输送管的制造方法的流程示意图； 图 13是根据本发明另一优选实施例的复合结构输送管的制造方法的流程示意图。 具体实施方式
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行清楚、 完 整地描述， 显然， 所描述的实施例仅是本发明的一部分实施例， 而不是全部的实施例。 基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所 有其他实施例， 都属于本发明保护的范围。
请一并参阅图 3和图 4， 其中， 图 3是根据本发明一优选实施例的复合结构输送管 的分解结构示意图； 图 4是图 3中所示的复合结构输送管的组合结构示意图。
如图 3和图 4所示， 本发明实施例提供一种复合结构输送管 30， 该复合结构输送 管 30用于输送物料， 在本实施例中， 该复合结构输送管 30为常用的直管， 该复合结构 输送管 30包括外管 31和内管 32。
其中， 该外管 31采用铝合金、 镁合金或钛合金等轻质合金材料一体成型； 该内管 32采用耐磨陶瓷、 超高分子量聚乙烯或复合聚氨酯等轻质耐磨材料一体成型， 具体地， 耐磨陶瓷可采用加压烧结的方法一体成型，超高分子量聚乙烯及复合聚氨酯可采用热压 成型的方法一体成型； 该内管 32设于该外管 31内。
在本实施例中， 该复合结构输送管 30还包括法兰单元 33， 该法兰单元 33—体成 型于该外管 31的端部，该内管 32的端部一体成型有法兰卡口 322，该法兰单元 33与该 法兰卡口 322适配以将该内管 32固定于该外管 31内。
在优选实施例中， 该法兰卡口 322呈凸台状， 图 3中示出的法兰卡口 322为连续 的凸台状， 当然， 该法兰卡口 322也可为离散的凸台状。 该法兰单元 33的内侧 （即朝 向法兰卡口 322的侧面） 呈凹环槽状， 该凹环槽状的法兰单元 33在其内侧恰好收容该 凸台状的法兰卡口 322，使得该内管 32固定于该外管 31内。本领域技术人员容易想到， 将该内管 32固定于该外管 31内的方式并不限于此，上述的凸台状及凹环槽状结构反过 来设置亦可， 即法兰单元 33的内侧呈凸台状， 法兰卡口 322呈凹环槽状。
当然， 法兰卡口 322和法兰单元 33的具体形状并不限于附图所示， 其可根据实际 安装要求进行设计， 例如， 法兰单元 33上可设有相应的安装孔等， 以便于与其他外部 法兰相连接。
在本实施例中， 该外管 31分为两半， 该两半外管 31采用焊接、 铆接或螺接的方 式相配合将该内管 32包围， 其中， 焊接、 铆接或螺接的方式可参照现有技术常用的方 式， 此处不再赘述。 当然， 该外管 31并不限于分为两半， 在其他实施例中， 该外管 31 分为亦可根据需要分为多半， 同样， 将该多半外管 31采用焊接、 铆接或螺接的方式相 配合将该内管 32包围。
本实施例提供的复合结构输送管 30的外管 31和内管 32均一体成型， 外管 31为 低密度、 高强度、 高韧性材料， 可在较轻的重量下提供足够的强度及韧性使输送管不变 形也不爆裂，相比复合材料具有更好的抗剪切能力，不易碰伤或摔坏，且成本相对较低； 内管 32为轻质耐磨材料， 可在较轻的重量下提供足够的耐磨性， 产品的整体重量相比 钢材的输送管可减轻 50%以上，使得拆装方便、效率及安全性均大为提高，且工艺简单， 内层不需要后续的热处理。 并且外管 31和内管 32的端部分别一体成型有法兰单元 33 和法兰卡口 322， 该法兰单元 33与该法兰卡口 322适配以将该内管 32固定于该外管 31 内，无需额外设置独立的法兰单元，省去了独立法兰单元需要与外管和内管的焊接工艺， 同时保证了产品的整体韧性和强度。
请一并参阅图 5和图 6， 其中， 图 5是根据本发明另一优选实施例的复合结构输送 管的分解结构示意图； 图 6是图 5中所示的复合结构输送管的组合结构示意图。
如图 5和图 6所示， 本发明实施例提供一种复合结构输送管 40， 该复合结构输送 管 40用于输送物料，本实施例提供的复合结构输送管 40与图 3和图 4中所示复合结构 输送管 30大致相同， 本实施例提供的复合结构输送管 40亦包括外管 41和内管 42。
其中， 该外管 41采用铝合金、 镁合金或钛合金等轻质合金材料一体成型； 该内管 42采用耐磨陶瓷、 超高分子量聚乙烯或复合聚氨酯等轻质耐磨材料一体成型， 具体地， 耐磨陶瓷可采用加压烧结的方法一体成型，超高分子量聚乙烯及复合聚氨酯可采用热压 成型的方法一体成型； 该内管 42设于该外管 41内。
在本实施例中， 该复合结构输送管 40还包括法兰单元 43， 该法兰单元 43—体成 型于该外管 41的端部，该内管 42的端部一体成型有法兰卡口 422，该法兰单元 43与该 法兰卡口 422适配以将该内管 42固定于该外管 41内。
在优选实施例中， 该法兰卡口 422呈凸台状， 图 5中示出的法兰卡口 422为连续 的凸台状， 当然， 该法兰卡口 322也可为离散的凸台状。 该法兰单元 43的内侧 （即朝 向法兰卡口 422的侧面） 呈凹环槽状， 该凹环槽状的法兰单元 43在其内侧恰好收容该 凸台状的法兰卡口 422，使得该内管 42固定于该外管 41内。本领域技术人员容易想到， 将该内管 42固定于该外管 41内的方式并不限于此，上述的凸台状及凹环槽状结构反过 来设置亦可， 即法兰单元 43的内侧呈凸台状， 法兰卡口 422呈凹环槽状。
当然， 法兰卡口 422和法兰单元 43的具体形状并不限于附图所示， 其可根据实际 安装要求进行设计， 例如， 法兰单元 43上可设有相应的安装孔等， 以便于与其他外部 法兰相连接。
在本实施例中， 该外管 41分为两半， 该两半外管 41采用焊接、 铆接或螺接的方 式相配合将该内管 42包围， 其中， 焊接、 铆接或螺接的方式可参照现有技术常用的方 式， 此处不再赘述。 当然， 该外管 41并不限于分为两半， 在其他实施例中， 该外管 41 分为亦可根据需要分为多半， 同样， 将该多半外管 41采用焊接、 铆接或螺接的方式相 配合将该内管 42包围。
本实施例提供的复合结构输送管 40与图 3和图 4中所示复合结构输送管 30的不 同之处在于， 本实施例提供的复合结构输送管 40为弯管， 适用于复合结构输送管的弯 折处的连接。
本实施例提供的复合结构输送管 40的外管 41和内管 42均一体成型， 外管 41为 低密度、 高强度、 高韧性材料， 可在较轻的重量下提供足够的强度及韧性使输送管不变 形也不爆裂，相比复合材料具有更好的抗剪切能力，不易碰伤或摔坏，且成本相对较低； 内管 42为轻质耐磨材料， 可在较轻的重量下提供足够的耐磨性， 其整体重量相比钢材 的输送管可减轻 50%以上， 使得拆装方便、 效率及安全性均大为提高， 且工艺简单， 内 层不需要后续的热处理。 并且外管 41和内管 42的端部分别一体成型有法兰单元 43和 法兰卡口 422， 该法兰单元 43与该法兰卡口 422适配以将该内管 42固定于该外管 41 内，无需额外设置独立的法兰单元，省去了独立法兰单元需要与外管和内管的焊接工艺， 同时保证了产品的整体韧性和强度。
上文以直管和弯管为例阐述了复合结构输送管的结构， 然而本领域技术人员完全 可以想到将上述结构应用到锥管上， 因此， 锥管的具体结构在此不再赘述。
请一并参阅图 7至图 10， 本发明实施例提供一种复合结构输送管 50， 该复合结构 输送管 50包括外管 51、 内管 52以及法兰单元 53， 其中， 该外管 51及该法兰单元 53 采用铝合金、 镁合金或钛合金等轻质合金材料； 该内管 52采用耐磨陶瓷、 超高分子量 聚乙烯或复合聚氨酯等轻质耐磨材料一体成型， 具体地， 耐磨陶瓷可采用加压烧结的方 法一体成型， 超高分子量聚乙烯及复合聚氨酯可采用热压成型的方法一体成型； 该内管 52设于该外管 51内， 该外管 51和该内管 52具有适配的直径， 可采用挤压的方式将内 管 52设于外管 51内。
在本实施例中， 该内管 52的端部突出于该外管 51的端部以形成安装部 522， 该法 兰单元 53套设于该安装部 522上并与该外管 51和该内管 52相配合。在具体实施例中， 该法兰单元 53可采用焊接、铆接或螺接的方式与该外管 51和该内管 52相配合， 其中， 焊接、 铆接或螺接的方式可参照现有技术常用的方式， 此处不再赘述。 应当注意的是， 当然， 该法兰单元 53的具体形状并不限于附图所示， 其可根据实际安装要求进行设计。
本实施例提供的复合结构输送管 50的外管 51和内管 52均一体成型， 外管 51为 低密度、 高强度、 高韧性材料， 可在较轻的重量下提供足够的强度及韧性使输送管不变 形也不爆裂； 内管 52为轻质耐磨材料， 可在较轻的重量下提供足够的耐磨性， 其整体 重量相比钢材的输送管可减轻 50%以上。并且设置有独立的法兰单元 53， 使得外管 51、 内管 52以及法兰单元 53的模具均为简化。
此外， 本发明还提供一种输送机械 （未图示）， 该输送机械用于输送物料， 该输送 机械包括上述的复合结构输送管。
请参阅图 11， 本发明还提供一种复合结构输送管的制造方法， 包括以下步骤： 步骤 Sll、 采用轻质合金材料形成外管， 例如选用铝合金、镁合金或钛合金等作为 该轻质合金材料；
步骤 S12、采用轻质耐磨材料形成内管， 例如选用耐磨陶瓷、超高分子量聚乙烯或 复合聚氨酯等作为该轻质耐磨材料；
步骤 S13、 将该内管设于该外管内， 具体方式见下文介绍。
具体而言， 请一并参阅图 12， 图 12是根据本发明另一优选实施例的复合结构输送 管的制造方法的流程示意图。
在本实施例中， 复合结构输送管的制造方法包括以下步骤：
步骤 S21、 形成内管和外管， 具体形成方式与图 11所示类似， 此处不再重复描述; 步骤 S22、 在该外管的端部一体成型法兰单元， 该法兰单元呈凹环槽状； 步骤 S23、， 在该内管的端部一体成型法兰卡口， 该法兰卡口呈凸台状； 步骤 S24、将该凹环槽状的法兰单元与该凸台状的法兰卡口适配以将该内管固定于 该外管内， 例如将该外管分为两半制造， 采用焊接、 铆接或螺接的方式将该两半外管相 配合以包围该内管， 当然， 该外管亦可分为多半制造， 并采用焊接、 铆接或螺接的方式 将该多半外管相配合以包围该内管。
本实施例提供的复合结构输送管的制造方法工艺简单， 其中外管和内管的端部分 别一体成型有法兰单元和法兰卡口， 无需额外设置独立的法兰单元， 省去了独立法兰单 元需要与外管和内管的焊接工艺， 同时保证了产品的整体韧性和强度。
请一并参阅图 13，图 13是根据本发明另一优选实施例的复合结构输送管的制造方 法的流程示意图。 在本实施例中， 复合结构输送管的制造方法包括以下步骤：
步骤 S31、 形成内管和外管， 具体形成方式与图 11所示类似， 此处不再重复描述， 其中， 内管与外管具有适配的直径；
步骤 S32、采用挤压的方式将内管插入外管内， 并使该内管的端部突出于该外管的 端部以形成安装部；
步骤 S33、采用轻质合金材料形成法兰单元，该法兰单元与该内管具有适配的直径; 步骤 S34、将该法兰单元套设于该安装部上并采用焊接、铆接或螺接的方式与该外 管和内管相配合， 其中， 焊接、 铆接或螺接的方式可参照现有技术常用的方式， 此处不 再赘述。
本发明提供的复合结构输送管的制造方法工艺简单， 所制得的复合结构输送管结 构紧凑、 韧性好且整体强度较佳。
综上所述， 本领域技术人员容易理解， 本发明公开的复合结构输送管外管为低密 度、 高强度、 高韧性材料， 可在较轻的重量下提供足够的强度及韧性使输送管不变形也 不爆裂， 相比复合材料具有更好的抗剪切能力， 不易碰伤或摔坏， 且成本相对较低； 内 管为轻质耐磨材料， 可在较轻的重量下提供足够的耐磨性， 产品的整体重量相比钢材的 输送管可减轻 50%以上， 使得拆装方便、 效率及安全性均大为提高， 且工艺简单， 内层 不需要后续的热处理。
以上所述仅为本发明的实施例， 并非因此限制本发明的专利范围， 凡是利用本发 明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的 技术领域， 均同理包括在本发明的专利保护范围内。

Claims

权利要求
1、 一种复合结构输送管， 其特征在于， 包括：
外管， 采用轻质合金材料； 以及
内管， 采用轻质耐磨材料；
其中， 所述内管设于所述外管内， 所述轻质合金材料为铝合金、 镁合金或钛合金， 所述轻质耐磨材料为耐磨陶瓷、 超高分子量聚乙烯或复合聚氨酯。
2、 根据权利要求 1所述的复合结构输送管， 其特征在于， 所述复合结构输送管还 包括法兰单元， 所述法兰单元一体成型于所述外管的端部， 所述内管的端部一体成型有 法兰卡口， 所述法兰单元与所述法兰卡口适配以将所述内管固定于所述外管内。
3、根据权利要求 2所述的复合结构输送管， 其特征在于，所述法兰卡口呈凸台状， 所述法兰单元的内侧呈凹环槽状， 用于与所述凸台状的法兰卡口相适配。
4、 根据权利要求 1至 3中任一项所述的复合结构输送管， 其特征在于， 所述外管 分为两半或多半， 所述两半或多半外管采用焊接、 铆接或螺接的方式相配合将所述内管 包围。
5、 根据权利要求 1所述的复合结构输送管， 其特征在于， 所述复合结构输送管还 包括法兰单元， 所述内管的端部突出于所述外管的端部以形成安装部， 所述法兰单元套 设于所述安装部上并与所述外管和所述内管相配合。
6、根据权利要求 5所述的复合结构输送管， 其特征在于，所述法兰单元采用焊接、 铆接或螺接的方式与所述外管和所述内管相配合。
7、 一种物料输送机械， 其特征在于， 所述物料输送机械包括根据权利要求 1至 6 中任一项所述的复合结构输送管。
8、 一种复合结构输送管的制造方法， 其特征在于， 包括以下步骤：
采用轻质合金材料形成外管； 采用轻质耐磨材料形成内管； 以及
将所述内管设于所述外管内；
其中， 在所述采用轻质合金材料形成外管的步骤中， 选用铝合金、 镁合金或钛合 金作为所述轻质合金材料；
在所述采用轻质耐磨材料形成内管的步骤中， 选用耐磨陶瓷、 超高分子量聚乙烯 或复合聚氨酯作为所述轻质耐磨材料。
9、 根据权利要求 8所述的制造方法， 其特征在于，
在所述采用轻质合金材料形成外管的步骤中， 还包括步骤： 在所述外管的端部一 体成型法兰单元， 所述法兰单元呈凹环槽状；
在所述采用轻质耐磨材料形成内管的步骤中， 还包括步骤： 在所述内管的端部一 体成型法兰卡口， 所述法兰卡口呈凸台状；
在所述将所述内管设于所述外管内的步骤中， 还包括步骤： 将所述法兰单元与所 述法兰卡口适配以使所述内管固定于所述外管内。
10、 根据权利要求 8和 9中任一项所述的制造方法， 其特征在于， 在所述将所述 内管设于所述外管内的步骤中， 还包括步骤： 将所述外管分为两半或多半制造， 采用焊 接、 铆接或螺接的方式将所述两半或多半外管相配合以包围所述内管。
11、 根据权利要求 8所述的制造方法， 其特征在于，
在将所述内管设于所述外管内的步骤中， 还包括步骤： 使所述内管的端部突出于 所述外管的端部以形成安装部。
12、 根据权利要求 11所述的制造方法， 其特征在于， 所述制造方法进一步包括以 下步骤：
采用轻质合金材料形成法兰单元；
将所述法兰单元套设于所述安装部上并采用焊接、 铆接或螺接的方式与所述外管 和内管相配合。
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