Reinforced magnesium alloy lightweight cargo container

Abstract

The utility model relates to the design and manufacture of light-weight metal containers, in particular to an enhanced magnesium alloy light-weight cargo container, which is characterized by consisting of a main framework, wall plates, a bottom plate, a top plate and a door, the main framework is formed by welding hollow profiles with a plurality of slots; the hollow profile is made of magnesium alloy; insertion type insertion strips are arranged in a plurality of insertion grooves of the main framework. The wall plates, the bottom plate and the top plate are formed by assembling and welding hollow profiles with slots and plates; the main framework, the wall plates, the bottom plate and the top plate integrally form a hexahedron structure, and more than one opening is formed in any surface of the hexahedron structure; the opening may be fully open, or closed by an openable door.

Description

Technical Field

[0001] The utility model relates to the design and manufacture of lightweight metal containers, and particularly to a reinforced lightweight cargo container made of magnesium alloy material. Background Art

[0002] A container, the primary function of which is to load goods for transportation. It can centrally load various types, shapes and sizes of goods in a standardized box, facilitating transfer and combined transportation between different transportation modes (such as sea transportation, air transportation, railway transportation, road transportation, etc.), and improving transportation efficiency. The container also has the function of protecting goods. Its strong steel structure can resist external impacts, squeezes and bad weather conditions, protecting the goods from damage, moisture and loss. In addition, the container can realize the unitization and standardization of goods transportation, making the loading, unloading, handling and storage of goods more convenient and efficient, and reducing labor costs and operation time.

[0003] A container should have a certain strength, stiffness and specifications, and is a large loading container specifically for turnover use. When using a container to transport goods, it can be directly loaded in the shipper's warehouse and unloaded in the consignee's warehouse. When changing vehicles or ships midway, there is no need to take out the goods from the container for reloading. It can be seen that the container is a remarkable mechanical creation. The greatest success of the container lies in the standardization of its products and the resulting complete set of transportation systems. It can standardize a huge object weighing dozens of tons, and on this basis, gradually realize a logistics system that matches ships, ports, shipping lines, roads, transfer stations, bridges, tunnels and multimodal transport globally. This is indeed one of the great miracles created by mankind throughout history. Currently, the container is made of metal materials as raw materials through processes such as cutting, welding, grinding, and painting. The disadvantages of existing products are: 1. Steel materials are prone to rust and corrosion, and the production anti-rust requirements are high; the anti-rust coating is damaged by bumps during handling and installation, and the anti-rust ability decreases. 2. The finished product is heavy, and the efficiency of loading goods is low. 3. The product has a short full life cycle and high maintenance costs.

[0004] With the development of the times and the continuous improvement of the transportation industry, the industry pays more and more attention to the full life cycle of the container and the maintenance and use costs. Improving the use efficiency of the product, extending the service life, reducing the maintenance costs, reducing its own weight, and improving the efficiency of loading goods, using new materials and new structures have become an inevitable trend.

[0005] The existing defects are: 1. Steel materials are prone to rust and corrosion, and the production anti-rust requirements are high; the anti-rust coating is damaged by bumps during handling and installation, and the anti-rust ability decreases. 2. The finished product is heavy, and the efficiency of loading goods is low. 3. The full life cycle of the product has high maintenance costs. Summary of the Utility Model

[0006] Objective of the utility model: To provide a lightweight cargo container made of enhanced magnesium alloy material with better effects. The specific objectives can be seen from multiple substantial technical effects in the specific implementation part.

[0007] To achieve the above objectives, the utility model adopts the following technical solutions:

[0008] Solution 1: A lightweight cargo container made of enhanced magnesium alloy material; the core is the mechanical structure;

[0009] Solution 2: A preparation method for a lightweight cargo container made of enhanced magnesium alloy material; the core is the preparation method;

[0010] To achieve the above objectives, the utility model adopts the following technical solutions:

[0011] Solution 1:

[0012] A lightweight cargo container made of enhanced magnesium alloy material, characterized in that the cargo container is composed of a main frame, wall panels, a bottom plate, a top plate and a door;

[0013] The main frame is welded by hollow profiles with multiple slots, and inserts connected together made of high-strength steel or high-strength composite materials are inserted into the inner cavities of the corner hollow profiles;

[0014] The hollow profiles are made of magnesium alloy;

[0015] Insertable inserts are arranged in multiple slots of the main frame;

[0016] The wall panels, bottom plate and top plate are assembled and welded from hollow profiles and plates with slots, including corrugated plates and honeycomb plates;

[0017] The main frame, wall panels, bottom plate and top plate together form a hexahedron structure, and one or more doors are arranged on any one side of the hexahedron structure;

[0018] The door is manufactured with the same standard and material as the container body.

[0019] A further technical solution of the utility model is that the insertable insert is an enhanced insert structure, which is firmly connected at the eight top corners of the container;

[0020] On the connection or welding joints at each top corner, lifting holes are provided at the ends of the upper longitudinal beam and the upper long cross beam in the end face and side directions of the container.

[0021] A further technical solution of the utility model is that the eight top corners formed by the enhanced insert structure are provided with top corner roof sheaths welded by high-strength steel plates;

[0022] The top corner roof sheathing structure is as follows: the end guard plate and the side guard plate are arranged at right angles, and the end guard plate and the side guard plate are each welded to the bottom lower roof plate;

[0023] A square stack centering hole (77) is included on the bottom lower top plate;

[0024] Circular holes matching the size and position of the lifting holes of the reinforcing insert structure are arranged on each of the side guard plates and the bottom lower top plate;

[0025] It also includes a sheath (45), the sheath (45) itself is welded with a block structure, the sheath (45) is cylindrical, and the diameter of the sheath (45) is the same as that of the circular hole; the length of the sheath (45) is adapted to the depth of the lifting hole of the reinforcing insert structure;

[0026] The top plate, guard plate and sheath are connected into a whole by welding.

[0027] A further technical solution of the utility model is that it also comprises an insert (42), the insert (42) is centrally connected with the reinforced insert structure and the corner reinforced corner (43), and the hanging hole is the reference for assembly centering.

[0028] A further technical solution of the utility model is that the main frame includes columns, an upper long cross beam, an upper longitudinal beam, a top plate longitudinal support, a lower long cross beam, a lower longitudinal beam, side wall transverse supports and longitudinal supports, end transverse supports and longitudinal supports, and bottom plate transverse supports and longitudinal supports.

[0029] A further technical solution of the utility model is that more than zero welding wings are arranged on the profile of the main frame. When there are multiple welding wings, they are located on different surface sides of the profile.

[0030] A further technical solution of the utility model is that the material of the inserted insert is high-strength steel or fiber-reinforced composite material.

[0031] A further technical solution of the utility model is that the inserted insert is an insert with an inclined surface or an insert without an inclined surface; and both sides of the inserted insert are provided with hanging holes or are not provided with hanging holes.

[0032] A further technical solution of the utility model is that the panels of the wall panels, bottom panels, top panels and doors are any one or more of magnesium alloy panels, magnesium alloy corrugated panels and magnesium alloy honeycomb panels.

[0033] A further technical solution of the utility model is that as much dry quartz powder or river sand as possible is poured into the gap between the inserted strip and the inner cavity of the profile, that is, the slot, and the end of the slot is blocked with asbestos yarn or asbestos cloth.

[0034] Option 2:

[0035] A preparation method of an enhanced lightweight cargo container made of magnesium alloy material, characterized in that the lightweight cargo container made of magnesium alloy material is composed of a main frame, wall panels, a bottom plate, a top plate and a door;

[0036] The main frame is welded by hollow profiles with multiple slots;

[0037] The hollow profile is made of magnesium alloy;

[0038] A variety of metal elements including rare earth are added to the magnesium alloy;

[0039] The contents of some of the elements are as follows: La, Ce or La + Ce 0.10 - 0.35% wt, yttrium (Y) 0.15 - 4.5% wt, gadolinium (Gd) 0.0 - 2.5% wt, aluminum (Al) 0.0 - 6.5% wt, zinc (Zn) 0.60 - 6.0% wt, manganese (Mn) 0.20 - 45% wt, tin (Sn) 0.0 - 1.5% wt; the balance is magnesium alloy;

[0040] The alloy of the above composition is made into a bar by semi - continuous casting after protective melting; after casting, it undergoes homogenization heat treatment, removing the surface oxide layer, pre - heating before extrusion, sizing and cutting after extrusion, post - extrusion annealing heat treatment, surface temporary protective coating or moisture - proof / anti - rust wrapping, and is reserved for use.

[0041] A further technical solution of the present utility model is that the profile is extruded in a hot state by a horizontal extrusion machine, the extrusion ratio is controlled between 8 and 120, and it is a strengthened hot - extruded hollow profile; the extrusion temperature is determined comprehensively according to the bar composition and extrusion machine parameters, the extrusion speed is controlled above 2.5 meters per minute, and in addition to normal traction, additional cooling measures are applied at the outlet of the extrusion machine. The cooling measure is to use bottled industrial - grade high - pressure nitrogen gas passing through a pressure reducing valve, and blow it at a certain angle and flow rate against a certain side of the outlet profile to achieve rapid cooling, so as to ensure that the extruded shape is not oxidized, smooth / straight, without surface damage, and without excessive twisting or bending deformation.

[0042] A further technical solution of the present utility model is that the main frame is welded by 12 - edge magnesium alloy profiles, and an ultra - high - strength steel or fiber composite material insert is inserted into the inner cavity of each edge and connected / welded into an integral structure, and transverse and longitudinal magnesium alloy profiles are also arranged on each side as strengthening supports.

[0043] A further technical solution of the present utility model is that the plug-in inserts are firmly connected at the respective top corners of the container, and are connected by welding or bonding to form an integral structure; if carbon fiber or other high-performance fiber composite strips are used as the inserts, the bonding method is required. On the welding joints at each top corner, in the directions of the end face and side face of the container, standard-sized lifting holes are provided at the ends of the upper longitudinal beams and upper long cross beams. The welding of the inserts is carried out after the welding of the magnesium alloy structure of the container body is completed. It is necessary to machine the welding positions of the inserts at both ends of the four long cross beam profiles in advance; finally, local grinding, polishing, passivation and painting are carried out.

[0044] A further technical solution of the present utility model is that plug-in inserts are arranged in the inner cavities of multiple profiles of the main frame;

[0045] The wall panels, bottom plates, top plates and doors are assembled and welded from hollow profiles and plates with slots;

[0046] The main frame, wall panels, bottom plates and top plates together form a hexahedron structure, and more than one door is arranged on any one surface of the hexahedron structure;

[0047] The door is manufactured with the same standard and material as the container body.

[0048] The present utility model adopting the above technical solution has the following beneficial effects compared with the prior art: The main frame of this patent is welded from hollow profiles with multiple closed cavities, and insert-type ultra-high-strength steel or carbon fiber composite reinforcement structures are arranged on all edges of the main frame. The wall panels are assembled and welded from hollow profiles and plates with closed cavities. This container can be used for constant temperature containers, powder lightweight cargo containers (such as the transportation of goods such as coal, refined ore, raw grain and processed grain products), accommodation containers, etc.; it is suitable for use on truck container flatbed trucks, railway container flatbed trucks, air transportation, and ocean container ships. The self-weight of the container is reduced by 35-50%, which can significantly increase the payload, realize green energy-saving and environmental protection transportation, reduce carbon emissions, and improve economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to further illustrate the present utility model, the following is further described with reference to the drawings:

[0050] Figure 1 It is a schematic diagram of the main frame;

[0051] Figure 2 It is a schematic cross-sectional view of the column profile: with adjacent side welding wings;

[0052] Figure 3 It is the column magnesium alloy profile and high-strength steel or composite material insert;

[0053] Figure 4 Schematic diagram of upper and lower longitudinal beams and long crossbeam inserts

[0054] Figure 5 Structural diagram of a support section without welded wings

[0055] Figure 6 Support section with welded wings on one side

[0056] Figure 7 Support section with welded wings on both sides

[0057] Figure 8 Cross-sectional view of the upper long crossbeam: with welded wings at the lower part

[0058] Figure 9 Cross-section of the middle crossbeam: with welded wings on both sides

[0059] Figure 10 Cross-sectional view of the lower long crossbeam: with welded wings at the upper part

[0060] Figure 11 Schematic diagram of cross and longitudinal beam inserts

[0061] Figure 12 Cross-sectional view of the support bar profile: without welded wings

[0062] Figure 13 Cross-sectional view of the support bar profile: with welded wings on one side

[0063] Figure 14 Cross-section of the support bar: with welded wings on both sides

[0064] Figure 15 Schematic diagram of the reinforcement insert position and welding joint

[0065] Figure 16 and Figure 17 is Figure 15 Local enlarged structure diagram of

[0066] Figure 18 Schematic diagram of the welding relationship between the long crossbeam of the chassis and the longitudinal support or column profile

[0067] Figure 19 Schematic diagram of the welding details at the top corner

[0068] Figure 20 Schematic diagram of the welding positions of each insert

[0069] Figure 21 Schematic diagram of a double-side opening container (2 doors)

[0070] Figure 22 Schematic diagram of a multi-side opening on the side (6 doors)

[0071] Figure 23 is a top-opening container;

[0072] Figure 24 is a schematic diagram of the composite insert design;

[0073] Figure 25 is a schematic diagram of the connection relationship of the composite insert reinforcement;

[0074] Figure 26 is the high-strength steel top plate and sheath of the composite insert / high-strength steel insert reinforcement structure;

[0075] Figure 27 is a schematic diagram of the insert (ultra-high-strength steel) and the insert block: from left to right: the first column insert; the second column insert; the upper and lower longitudinal beam inserts; the upper and lower long cross beam inserts; the insert block.

[0076] Among them: 1. Column; 2. Intermediate support; 3. Upper longitudinal beam; 4. Upper long cross beam; 5. Longitudinal support of the top plate; 6. Upper top plate; 7. End door; 8. End door control mechanism; 9. Side wall; 10. Lateral support of the side wall; 11 Lower long cross beam; 12 Top corner welding structure; (for stacking positioning structure, lifting structure); 13. Outer wall of the column profile; 14. First slot of the column profile; 15. Inner rib of the column profile; 16. Welding wing on one side of the column profile; 17. First slot of the column profile; 18. Welding wings on both sides of the column profile; 19. Second slot of the column profile; 21 Lifting hole; 22. Second column insert; 23. First column insert; 24. Insert type insert; 41. Container top corner; 42. Insert block; 43. Corner reinforcement corner; 44. Side guard plate; 45. Sheath; 50. Self-locking head of the door operating rod; 51. Door operating rod; 75. Upper corner stacking alignment surface; 77. Square hole for stacking alignment surface. Specific implementation method

[0077] The present utility model will be further clarified below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present utility model. In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a metallurgical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two or more elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0078] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0079] This patent provides multiple parallel solutions. For different expressions, they belong to improved solutions or parallel solutions based on the basic solution. Each solution has its own unique features. In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other. The fixing method not described in the text can be any one of riveting fixation, bolt fixation or glue bonding, etc.

[0080] An enhanced magnesium alloy material cargo container and its manufacturing method. The lightweight container is made of high-strength deformed magnesium alloy, as well as a small amount of strengthening and stiffening materials, such as ultra-high-strength steel or fiber composite materials. The structure consists of five parts: the main frame, the wall panel, the bottom panel, the end panel, the top panel and the door.

[0081] Each component that makes up the main frame, including columns, upper long crossbeams, upper longitudinal beams, longitudinal supports for the top plate, lower long crossbeams, lower longitudinal beams, lateral and longitudinal supports for the side walls, lateral and longitudinal supports for the ends, lateral and longitudinal supports for the bottom plate, door frames, etc., the cross-sectional shapes and dimensions of the magnesium alloy profiles for different components are different according to functions, stress conditions, connection methods, and geometric positions.

[0082] Structures such as the columns are made of high-strength magnesium alloy profiles, and high-strength or ultra-high-strength steel inserts are inserted into the internal cavities of the column profiles. The cross-sectional designs of each profile are as Figures 2 - 14 shown:

[0083] The enhanced insert structure is characterized in that: (1) it is made of the same ultra-high-strength material, such as ultra-high-strength steel, fiber-reinforced composite materials; (2) each insert is firmly connected at each corner of the container, such as by welding, to form an integral structure; if carbon fiber or other high-performance fiber composite strips are used as inserts, an adhesive bonding method is required; (3) on the welded joints at each corner, in the directions of the container end face and side face, standard-sized lifting holes are provided at the ends of the upper longitudinal beam and the upper long crossbeam; (4) the insert welding is carried out after the welding of the magnesium alloy structure of the container body is completed. It is necessary to machine the insert welding positions at both ends of the four long

[0084] crossbeam profiles in advance; finally, local grinding, polishing, passivation, and painting are carried out.

[0085] At the eight corners formed by the insert welding / adhesive bonding structure, there are corner top plate sheaths welded by high-strength steel plates. The top plate is made of steel plates with a thickness of 8 - 25 mm, and a square stacking positioning hole is provided at its center position. The guard plate is made of high-strength steel plates with a thickness of 3 - 15 mm, and a round hole matching the size and position of the insert lifting hole, as well as a sheath of the same material with the same diameter as the round hole, are provided at its center part. The thickness of the sheath is 3 - 8 mm, and the length is adapted to the depth of the lifting hole after the insert welding / adhesive bonding. The top plate, guard plate, and sheath are connected by welding to form an integral body. It should be noted that these weldings are carried out in place after the insert welding / adhesive bonding is completed. Then, grinding and polishing, passivation, and painting are carried out for final protection. The top plate, guard plate, sheath, and their relative positions are as Figure 26 shown.

[0086] Example 1: As a standard container for standard gauge railway flat cars and standard containers for road trucks, when transporting general non-bulk steel, non-large lumps of ore and other bulk goods, ultra-high-strength steel 40Cr, in hot-rolled state or quenched and tempered state after rolling, is used as the insert, and it is assembled and manufactured in the following order:

[0087] (1) Select semi - continuous cast AZ32M magnesium alloy bars. After homogenization heat treatment, prepare various profiles, plates, corrugated plates and / or honeycomb plates, such as column profiles, beam profiles, etc. Do preparatory work including precise cutting, machining welding grooves, cutting windows for inserting strips for welding, and plates for blocking welding windows, etc. The outer wall thickness of each profile is 3.5 - 5.0 mm, and the internal rib thickness is 2.5 - 3.5 mm. The original thickness of the corrugated plate is 1.5 - 3.5 mm, and the longitudinal thickness after being pressed into a corrugated plate is 55 - 75 mm. The thickness of the magnesium alloy panel of the honeycomb plate is 1.5 - 2.5 mm, and the original thickness of the honeycomb core foil strip is 0.02 - 0.06 mm. The material can be selected as conventional aluminum alloy. The total thickness of the honeycomb plate structure is 10 - 25 mm. The appearance dimensions of each profile are defined by the container design drawings; the appearance dimensions of the magnesium alloy plate, magnesium alloy corrugated plate, and magnesium alloy honeycomb plate are also defined by the container design drawings. For the welding material, i.e., the welding wire, select AZ31B magnesium alloy hot - extruded welding wire, or a material made by hot - extruding a material completely homogeneous with the profile or plate.

[0088] (2) After precisely cutting the above - mentioned 40Cr inserts, pre - drill hoisting holes at the determined positions at both ends of the long beam, with a diameter slightly larger than the final hoisting hole.

[0089] (3) Insert the prepared inserts into the corresponding inner holes of the profiles and adjust the protruding length. Select the insert welding material according to the number requirements of the national standard for welding 45Cr steel.

[0090] (4) Pour as much dry quartz powder or river sand as possible into the gap between the insert and the profile cavity, and block the ends with asbestos yarn or asbestos cloth to prevent the powder from leaking out.

[0091] (5) According to the above - mentioned assembly and welding process, carry out the assembly and welding of the magnesium alloy container body; adopt the TIG process, and perform inspection and correction after fully cooling after welding.

[0092] (6) Weld the inserts in the following order:

[0093] (a) Weld the column inserts and the long - beam inserts according to the relative positions as shown, and successively complete the welding of 8 top - corner hoisting holes and the stacking alignment structure, requiring full penetration welding. Figure 7 Shown.

[0094] (b) The relative position of the welding of the second - type column insert and the insert at the middle of the end of the long - beam insert with an insert block embedded in between is as shown in Figure 26 .

[0095] (7) Weld the square top plates (container stacking contact, alignment and commutation positioning devices) made of the same material as the inserts at the top and bottom. Open square positioning holes in the middle of the top plates; trim the hoisting holes and positioning holes.

[0096] (8) Grind, polish and passivate all outer surfaces, and paint and print after thorough drying.

[0097] Example 2: This example is applied to a container with a side-opening door. As Figure 21 and Figure 22 shown.

[0098] (1) Prepare various magnesium alloy profiles and process the ends. At the same time, prepare basic raw materials such as inserts, inlays, top plates, and guard plates. Except for the side walls and doors, the rest are the same as in Example 1;

[0099] (2) Assemble and weld the main frame, inserts and inlays, and assemble and weld the two end walls, including strengthening longitudinal support bars;

[0100] (3) Assemble and weld the left and right side walls according to the design requirements. The positions of the two side doors can be set in the exact middle of the length direction of the side walls, and the door size depends on the design requirements; the door operating rods can be set to one per door or multiple according to the design requirements; multiple groups of doors or multiple doors can also be set, not necessarily in accordance with double-opening doors.

[0101] (4) Inspect, correct, polish, paint, and print

[0102] Example 3: It is a top-opening container. This example is suitable for loading fine and non-flowable powders, and the unloading method is the tipping or overturning pouring mode, as Figure 23 shown.

[0103] Example 4: Carbon fiber composite material is used as the reinforcing insert

[0104] A magnesium alloy structure cargo container uses carbon fiber composite material, basalt fiber composite material, or S glass fiber composite material to make the reinforcing insert. The insert is finally centered, cemented and cured after being inserted into the corresponding profile cavity, and is welded to the magnesium alloy profile frame to become an integral body. The lifting holes are made by fiber winding method, and mechanical drilling method is absolutely prohibited for processing the lifting holes. A plastic block of the same polymer material as the composite material matrix is used as the inlay, and the inlay is centered and connected to the insert and the corner strengthening corner in the same way as the insert. The lifting holes are the assembly centering reference.

[0105] This composite insert-reinforced magnesium alloy container will further reduce the weight by 120 - 250 kg compared with the container using high-strength steel inserts.

[0106] The stacking centering mechanism at the eight corner tops is made of high-strength steel. It uses upper and lower top plates, end guard plates welded to the top plates and side guard plates, and a cylindrical sheath that is tightly adhesively bonded to the hole wall of the lifting hole and welded to the guard plates. The top plates and guard plates are connected to the composite plug connection mechanism by adhesive bonding.

[0107] Example 5: A reinforced magnesium alloy material freight container and its manufacturing method. High-strength magnesium alloy profiles and sheets are used and assembled by welding to form the above lightweight freight container. The specific method is as follows:

[0108] Step 1. Prepare high-strength magnesium alloy: Select high-quality advanced magnesium alloy and use a mature process to prepare a dense casting rod that matches the size requirements of the profiles in Step 2. For example, use the semi-continuous casting method and then perform pre-heat treatment, such as homogenization heat treatment, to prepare the internal microstructure for hot extrusion or rolling;

[0109] Step 2. Prepare profiles, sheets, corrugated plates or honeycomb plates: Prepare magnesium alloy profiles by hot extrusion, prepare magnesium alloy sheets by hot rolling or a combination of hot extrusion + hot rolling, etc.; Make some sheets into corrugated plates and / or honeycomb plates; According to the size specifications of the required lightweight freight container, precisely cut the profiles and precisely cut the sheets; Customize high-strength steel inserts for reinforcement and homogeneous high-strength steel inserts, stacking top plates and positioning square holes in the center of the top plates according to the design parameters;

[0110] Step 3. Assembly and welding: Assemble and weld the profiles, sheets and corrugated plates cut in Step 2 on a steel workbench. First, insert high-strength steel inserts into the columns, upper and lower long crossbeams, and longitudinal beams, assemble and weld them into the main frame, and then complete the assembly and welding of the magnesium alloy structure in the order of first columns, then crossbeams, side door frames, and finally bottom plates, side wall plates, front and rear end plates (including end door frames); Then weld the ends of the high-strength steel inserts to form a lifting structure of the eight-corner top welded steel structure, form lifting holes on both sides and at both ends, stacking top plates at the top and bottom and square positioning holes in the center of them; Then install each separately assembled and welded door in place through the hinge rivet structure;

[0111] Step 4. Protective treatment of inserts: First, grind and polish the welded joints and processing holes of the inserts, perform spray or brush passivation treatment with commercial or self-made passivation solution, clean with water, blow with dry gas, dry, and apply anti-rust paint; Pour dried alumina fine powder, or quartz powder, or finely ground river sand fine powder, or any other dry powder that does not chemically react with the insert steel and magnesium alloy profiles into the gap between the insert and the magnesium alloy profile cavity where the insert is located;

[0112] Step Five: Overall Protection: After completing the welding and assembly, inspect the geometric tolerances, perform local shape correction as needed, drill holes (bolt holes or rivet holes) at the positions where installation and opening are required, grind and polish, passivate all the inner and outer surfaces, side edges of the container structure, and all the outer surfaces of the door leaves, level the areas that need to be flattened with putty, sand them smooth, and then perform operations such as spraying primer, topcoat, and printing, and then spray protective paint, topcoat, and spray or print patterns and words; install the door and other inserts after all the paint is fully dried.

[0113] Example 5: Its main structure is composed of a main frame, a reinforcing structure, a bottom plate, side walls, front and rear end plates, a top plate, and multiple pairs of double-leaf doors, and these structures are manufactured by fusion welding; among them, the reinforcing structure is formed by inserting a strip-shaped structure made of ultra-high-strength steel into the interior of the main frame profile and welding it separately to inlay with the main frame.

[0114] Example 7: Corrugated plates and / or honeycomb plates are used in the side walls, end walls, or top / bottom panels. The corrugated plates are made of magnesium alloy hot-rolled plates or extruded plates cut into a determined length, and are formed into corrugated plates with a determined overall thickness, width, and length through hot pressing or cold pressing in a special mold.

[0115] Example 8: Honeycomb plates with magnesium alloy panels are used in the side walls, end walls, or top / bottom panels. The honeycomb plates are composed of two plates with the same length, width, and the same or different thicknesses. After each plate is passivated on one side, glue is applied, and the two glued surfaces face each other, and a honeycomb core is pasted in the middle. The honeycomb core can be made of magnesium alloy, aluminum alloy, or other materials with a certain heat resistance. The magnesium alloy or aluminum alloy honeycomb core can be a cemented honeycomb core or a welded honeycomb core; the welding method can be brazing or fusion welding.

[0116] Example 9: The main frame is made of high-strength magnesium alloy by hot extrusion into hollow profiles. The cross-sectional dimensions and shapes of the hollow profiles are specially designed according to the specific positions and functions of the profiles in the main frame, especially the force-bearing characteristics, and have different overall dimensions and structural details, including the shape of the inner cavity, the internal rib structure, and the corresponding arc transitions.

[0117] Example 10: It is a closed frame, inlaid in the twelve corner edges of the main frame, and welded at eight top corners; each edge is composed of inserts inserted into the cavity of the edge profile; the inserts are made of ultra-high-strength steel and are formed by hot rolling, heat treatment (such as quenching and tempering), and end machining; the welding process can choose arc welding (such as TIG, MIG) or laser welding, and after welding, local annealing heat treatment (such as electromagnetic induction heating annealing) is carried out, and then holes are drilled on two sides of the eight top corners (see Figure 4 )

[0118] Example 11: A welding insert reinforcement system, where the weld positions are set as follows: The lower parts at both ends of the long crossbeam inserts are welded to the top surfaces of the No. 1 column inserts; both end faces of the longitudinal beam inserts are welded to the side faces at the ends of the No. 2 column inserts; the inclined surfaces at the ends of the column inserts are welded to the inclined surfaces of the inserts; the right-angle faces of the inserts are welded to the inner-facing side faces at both ends of the long crossbeam inserts.

[0119] Example 12: Except for the inner holes, internal ribs, outer walls and other structures of the profiles, on the side facing the inside of the wall, welding wings are provided for welding the sides of wall panels (such as corrugated boards, honeycomb boards, etc.). The thickness of the welding wings matches the thickness of the plate parts (such as corrugated boards, honeycomb boards, etc.) to be welded. Usually, its thickness can be 0.5 - 2.0 mm larger than the plate parts to be connected, and the height can be 2 - 10 times the thickness. The length is the same as the length of the profile, but adaptive processing and modification should be carried out before welding to meet the requirements of the overall wall panel.

[0120] Example 13: After the welding assembly is completed, the entire container structure and its door leaves are subjected to shape and position correction, grinding and polishing, chemical passivation, and spraying with more than two layers of organic paint for permanent protection to ensure that the container can serve safely for a long time.

[0121] Example 14: The core of this example is the structure of inserting a reinforcing part in the middle of the hollow profile, which can greatly increase the strength of the container. A lightweight cargo container made of enhanced magnesium alloy material, characterized in that the cargo container is composed of a main frame, wall panels, a bottom plate, a top plate and a door;

[0122] The main frame is welded by hollow profiles with multiple slots;

[0123] The hollow profiles are made of magnesium alloy;

[0124] Insertable inserts are provided in multiple slots of the main frame;

[0125] The wall panels, bottom plate, top plate and door are assembled and welded by hollow profiles with slots and plates;

[0126] The main frame, wall panels, bottom plate and top plate together form a hexahedron structure, and more than one opening is arranged on any one face of this hexahedron structure;

[0127] The opening can be completely open or can be manufactured with the same standard and material as the container body.

[0128] Generally speaking, the main frame of this patent is welded by hollow profiles with multiple closed cavities. Inserted ultra-high-strength steel or carbon fiber composite reinforcement structures are provided at all edges of the main frame. The wall panels are assembled and welded by hollow profiles and plates with closed cavities. This container can be used for constant temperature containers, powder lightweight cargo containers (such as the transportation of goods like coal, refined ore, raw grains, and processed grain products), accommodation containers, etc.; it is suitable for being loaded and used by truck container flatbed trucks, railway container flatbed trucks, and ocean container cargo ships. The self-weight of the container is reduced by 30 - 40%, which can significantly increase the payload, achieve green energy-saving and environmental protection transportation, reduce carbon emissions, and improve economic and social benefits.

[0129] Example 15: La 0.10wt, yttrium (Y) 4.5%wt, gadolinium (Gd) 2.5%wt, aluminum (Al) 6.5%wt, zinc (Zn) 0.60%wt, manganese (Mn) 0.20%wt, tin (Sn) 1.5%wt; the balance is magnesium alloy;

[0130] Example 16: La + Ce 0.35%wt, yttrium (Y) 0.15wt, gadolinium (Gd) 0.5%wt, aluminum (Al) 5%wt, zinc (Zn) 6.0%wt, manganese (Mn) 45%wt, tin (Sn) 0.5%wt; the balance is magnesium alloy;

[0131] Example 17: Ce 0.2%wt, yttrium (Y) 0.3%wt, gadolinium (Gd) 1%wt, aluminum (Al) 4%wt, zinc (Zn) 4%wt, manganese (Mn) 8%wt, tin (Sn) 1%wt; the balance is magnesium alloy.

[0132] Container material combined structure strength index and unit mass table

[0133] Container material / structure tensile / bending strength table

[0134]

[0135] Note 1: Q235 is the steel commonly used in standard containers

[0136] Note 2: AZ80M is the modified upgraded version of high-strength magnesium alloy AZ80

[0137] Note 3: 40Cr is the commonly used ultra-high-strength low alloy steel

[0138] Note 4: Welding refers to the welding process that is particularly good for this alloy

[0139] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the claimed protection.

Claims

1. An enhanced lightweight cargo container made of magnesium alloy material, characterized in that, The cargo container consists of a main frame, wall panels, a bottom plate, and a top plate; The main frame is welded by hollow profiles with multiple slots; The hollow profiles are made of magnesium alloy; Insertable inserts are provided in multiple slots of the main frame; The wall panels, bottom plate, and top plate are assembled and welded by hollow profiles and plates with slots; The main frame, wall panels, bottom plate, and top plate together form a hexahedron structure, and more than one opening is arranged on any one surface of the hexahedron structure; The opening is completely open and is manufactured using the same standards and materials as the container body.

2. An enhanced lightweight cargo container made of magnesium alloy material as claimed in claim 1, wherein, The insertable insert is a reinforced insert structure and is firmly connected at the eight top corners of the container; On the welding joints at each top corner, lifting holes are provided at the ends of the upper longitudinal beam and the upper long cross beam in the end face and side directions of the container.

3. An enhanced lightweight cargo container made of magnesium alloy material according to claim 2, characterized in that, The eight top corners are composed of a reinforced insert structure, and a top corner roof sheath welded by high-strength steel plates is provided; The structure of the top corner roof sheath is as follows: The end plate and the side plate are arranged at a right angle, and the end plate and the side plate are respectively welded to the bottom lower roof plate; Square stacking alignment holes (77) are included on the bottom lower roof plate; Round holes matching the size and position of the lifting holes of the reinforced insert structure are arranged on the side plates and the bottom lower roof plate respectively; A sheath (45) is also included. The sheath (45) itself is welded into a block structure to form the top corner of the container. The sheath (45) is cylindrical and has the same diameter as the round hole; The length of the sheath (45) is adapted to the depth of the lifting hole of the reinforced insert structure; The top plate, guard plate, and sheath are connected by welding to form an integral whole.

4. An enhanced lightweight cargo container made of magnesium alloy material according to claim 3, characterized in that, Inserts (42) are also included. The inserts (42) are centered and connected to the reinforced insert structure and the corner reinforcement corner (43), and the lifting hole is the reference for assembly centering.

5. An enhanced lightweight cargo container made of magnesium alloy material as claimed in claim 1, wherein, The main frame includes columns, upper long cross beams, upper longitudinal beams, top plate longitudinal supports, lower long cross beams, lower longitudinal beams, side wall transverse supports and longitudinal supports, end transverse supports and longitudinal supports, bottom plate transverse supports and longitudinal supports.

6. An enhanced lightweight cargo container made of magnesium alloy material according to claim 1, characterized in that, Zero or more welding wings are arranged on the profiles of the main frame. When there are multiple welding wings, they are located on different surface sides of the profile.

7. An enhanced lightweight cargo container made of magnesium alloy material according to claim 1, characterized in that, The material of the insertable insert is high-strength steel, fiber-reinforced composite material.

8. An enhanced lightweight cargo container made of magnesium alloy material according to claim 1, characterized in that, The insertable insert is an insert with a bevel or an insert without a bevel; Lifting holes are provided on both sides of the insertable insert or not.

9. An enhanced lightweight cargo container made of magnesium alloy material according to claim 1, characterized in that, The plates of the wall panels, bottom plate, top plate, and door are any one or more of magnesium alloy plates, magnesium alloy corrugated plates, and magnesium alloy honeycomb plates.

10. An enhanced lightweight cargo container made of magnesium alloy material as described in claim 1, characterized in that, As much dry quartz powder or river sand as possible is poured into the gap between the insertable insert and the profile cavity, that is, the slot, and the end of the slot is blocked with asbestos yarn or asbestos cloth.

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