A method of shipping cylindrical cargo within a container

Abstract

The present application relates to the container transport technical field, especially a kind of cylindrical goods in the loading method in container, including empty state and loading state.A column of middle supports and a column of side supports adjacent to the left and right sides of middle supports are placed in container, the top surface of side support has arc-shaped groove, and middle support and side support are both elastic members;In empty state, the top surface of middle support is higher than the lowest point of groove surface of arc-shaped groove of side support on the left and right sides;In loading state, the top surface of middle support and the groove surface of arc-shaped groove of side support on the left and right sides are all pressed to fit the outer circumferential surface of cylindrical goods, and the compression amount of middle support is greater than the compression amount of side support at this time.Middle support is deformed and broken after one or a few times of transport, but it protects side support to be reused, and middle support only needs to be replaced instead of overall replacement after one time of transport, so as to reduce cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of container transportation, and in particular to a method for loading cylindrical goods in a container. BACKGROUND

[0002] When transporting cylindrical goods such as coiled steel using a container, a support is needed to be laid on the container floor to prevent the cylindrical goods from rolling. Currently, a commonly used method is to place a foam block in the container, which is basically used once or a few times. The top surface of the foam block has an arc-shaped groove, and one foam block is used to support one cylindrical good. The foam block is light in weight, easy to carry, and has good cushioning performance; however, after being used once, the foam block often has problems such as uneven rebound and local fracture, and cannot be used again, often cannot be repeatedly used, belongs to consumables, and causes an increase in transportation cost. SUMMARY

[0003] (I) Technical problems to be solved

[0004] In view of the above-mentioned defects and deficiencies of the prior art, the present application provides a method for loading cylindrical goods in a container, which takes into account good cushioning performance and reduced transportation cost.

[0005] (II) Technical solutions

[0006] In order to achieve the above-mentioned purposes, the main technical solutions adopted by the present application include:

[0007] The present application provides a method for loading cylindrical goods in a container, which includes an empty state and a loading state entered after the empty state. In the empty state, a row of middle supports are placed in the container, and the middle supports are elastic members. On the left and right sides of the middle supports, a row of side supports are placed, and the side supports are adjacent to the middle supports. The top surface of the side supports has an arc-shaped groove, and the groove surface of the arc-shaped groove extends downward in the direction towards the middle supports. The side supports are elastic members. The top surface of the middle supports is higher than the lowest point of the groove surface of the arc-shaped groove on the left and right sides of the side supports. In the loading state, a plurality of cylindrical goods are arranged along the arrangement direction of the middle supports and are supported on the middle supports and the arc-shaped grooves on the left and right sides of the middle supports. The top surface of the middle supports and the groove surface of the arc-shaped grooves on the left and right sides are all pressed down to be in contact with the outer circumferential surface of the cylindrical goods.

[0008] Preferably, the width of the middle support in the empty state, the height of the middle support, the height of the top surface of the side support, the height of the lowest point of the groove surface of the side support, the width of the bottom surface of the side support, the width of the top surface of the side support, the determination of the arc of the arc-shaped groove satisfies the following conditions: taking the center of the bottom surface of the middle support in the width direction as the coordinate system circle point to make the XY coordinate system; moving upwards along the Y axis from the coordinate system circle point by a preset ground clearance and the outer circle radius of the cylindrical cargo, to obtain a first circle center located on the Y axis, wherein the preset ground clearance is 100-110 mm, and the outer circle radius of the cylindrical cargo is 500-800 mm; taking the first circle center as the circle point, drawing a first inclined line from the Y axis to one side by a first preset angle, wherein the first preset angle is 15°-17°, the first inclined line intersects the X axis to obtain an intersection point B, and the B point is mirrored about the Y axis to obtain a C point on the X axis on the other side of the Y axis, and the width of the middle support in the empty state is equal to the distance between the B point and the C point; the height of the middle support in the empty state is equal to the preset ground clearance divided by the first preset compression percentage, and the first preset compression percentage is 30%-50%; drawing a first vertical line from the B point upwards perpendicular to the X axis, and the arc drawn with the first circle center as the center and the outer circle radius of the cylindrical cargo as the radius intersects the first vertical line to obtain an intersection point I; the height of the lowest point of the groove surface of the side support in the empty state is equal to the distance between the B point and the I point divided by the second preset compression percentage, and the second preset compression percentage is 50%-70%; moving upwards from the C point along the vertical line perpendicular to the X axis by the height of the lowest point of the groove surface of the side support in the empty state to obtain a D point; drawing an arc line with the D point as the center and the outer circle radius of the cylindrical cargo as the radius, and the arc line intersects the Y axis to obtain an intersection point second circle center; drawing a second inclined line from the Y axis to one side towards the D point by a second preset angle with the second circle center as the center, wherein the second preset angle is 45°-47°, the second inclined line intersects the X axis to obtain an intersection point F, and the second inclined line intersects the arc line with the second circle center as the center and the outer circle radius of the cylindrical cargo to obtain an intersection point G; drawing a second vertical line from the F point upwards perpendicular to the X axis, and drawing a horizontal line from the G point to the side where the F point is located, and the second vertical line and the horizontal line intersect to obtain an intersection point H; the height of the top surface of the side support in the empty state is greater than or equal to the distance between the F point and the H point; the width of the bottom surface of the side support in the empty state is greater than or equal to the distance between the C point and the F point; the width of the top surface of the side support in the empty state is greater than or equal to 200 mm; and the arc surface of the arc-shaped groove is the part of the arc line drawn with the second circle center as the center and the outer circle radius of the cylindrical cargo as the radius between the D point and the G point.

[0009] Preferably, the preset ground clearance is selected as 100 mm, and when the distance between the H point and the G point is less than 200 mm, the H point and the F point are moved away from the Y axis at equal distances, so that the top surface width of the side support is greater than or equal to 200 mm; or the values of the first preset angle and / or the second preset angle are increased, so that the top surface width of the side support is greater than or equal to 200 mm.

[0010] Preferably, the outer circle radius of the cylindrical cargo is selected as 625 mm, and the shipping method is suitable for cylindrical cargos with an outer circle radius of 500-800 mm.

[0011] Preferably, in the empty state: the middle support is a cuboid or a square, and the top surface and the bottom surface of the side support are perpendicular to the outer vertical surface and the inner vertical surface, respectively; the height of the middle support is 200-335 mm, and the width is 325-560 mm; the lowest point of the groove bottom of the arc-shaped groove of the side support is 180-320 mm, the height of the top surface of the side support is 305-630 mm, the width of the bottom surface of the side support is 500-870 mm, and the width of the top surface of the side support is 200-465 mm.

[0012] Preferably, the length of a single side support along its arrangement direction is greater than the length of a single middle support along its arrangement direction, and the seams of adjacent middle supports are staggered with the seams of adjacent side supports; the length of a single middle support and a single side support along their arrangement directions is greater than or equal to their respective widths.

[0013] Preferably, in the empty state: the left and right two columns of side supports are arranged in pairs and symmetrically about the center surface of the middle support; a column of transverse abutting pieces is arranged on the outer side of each of the left and right two columns of side supports, and the transverse abutting pieces are clamped between the side supports and the side walls of the container; the left and right two columns of transverse abutting pieces are arranged in pairs and symmetrically about the center surface of the middle support; the two end edges of each transverse abutting piece in the axial direction of the middle support are staggered with the seams of adjacent side supports; the shape of the transverse abutting piece is the same as the groove shape enclosed by the two arc-shaped grooves in a pair of side supports after being spliced together; a cushion block is arranged at each of the front and rear ends of the middle support, clamped between the middle support and the door and the front wall of the container, and the cushion block is arranged between the end faces of adjacent two cylindrical cargos.

[0014] Preferably, the elasticity of the middle support is greater than or equal to the elasticity of the side support; the height of the center of the top surface of the middle support in the loaded state is 30-50% of the height of the center of the top surface of the middle support in the empty state; and the height of the lowest point of the groove surface of the arc-shaped groove of the side support in the loaded state is 50-70% of the height of the lowest point of the groove surface of the arc-shaped groove of the side support in the empty state.

[0015] Preferably, the material of the middle support, the side support and the transverse abutting piece is one of EPS polystyrene foam material, EPP polypropylene foam material, EPE polyethylene foam material and EPO copolymer foam material; the top surface of the middle support and / or the groove surface of the arc-shaped groove of the side support is provided with a reinforcing layer.

[0016] Preferably, the initial density of the middle support and the side support is 19-21 kg / m 3 , and the material is EPS polystyrene foam material.

[0017] (Three) beneficial effects

[0018] The beneficial effects of the present application are:

[0019] In the present application, the integral foam support mode in the prior art is abandoned, and the middle support and the side supports adjacent to both sides thereof are adopted to jointly support the cylindrical goods. The joint exists between the middle support and the side supports due to the abutment, which provides a space for expansion for the possible compression fracture of the supports; at the same time, the middle support is mainly used to bear the longitudinal weight of the cylindrical goods, and the side support is mainly used to provide lateral support for the cylindrical goods. In the empty state, the top surface of the middle support is higher than the lowest point of the groove surface of the arc-shaped groove of the side support, and after bearing the cylindrical goods, the top surface of the middle support and the arc-shaped groove of the side support are both depressed to fit the outer peripheral surface of the cylindrical goods. In this process, the compression amount of the middle support is greater than that of the side support. During transportation, the middle support is more prone to deformation and fracture than the side support, so that the side support can be repeatedly used by sacrificing the middle support. Thus, the cylindrical goods are not only buffered and supported by the elastic middle support and side support, but also only need to replace the broken middle support after one transportation, thereby reducing the transportation cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view schematic diagram of a container used in the loading method of the cylindrical goods in the container of the embodiment of the present application, showing two containers in a railway wagon, which respectively load 3 cylindrical goods and 4 cylindrical goods;

[0021] Figure 2 It is a structure schematic diagram of the container in Figure 1 , wherein the container loading 3 cylindrical goods shows a top view, and the container loading 4 cylindrical goods shows a bottom view;

[0022] Figure 3 It is a side view schematic diagram of the container in Figure 1 ;

[0023] Figure 4 Fig. 1 is a perspective view of a container in an empty state showing the structure for supporting goods in the container; Figure 1 Fig. 2 is an exploded view of the container in an empty state showing the structure for supporting goods in the container;

[0024] Figure 5 Fig. 3 is a side view of the container in an empty state showing the structure for supporting goods in the container; Figure 4 Fig. 4 is a perspective view of the container in a loaded state showing the structure for supporting goods in the container;

[0025] Figure 6 Fig. 5 is a side view of the container in a loaded state showing the structure for supporting goods in the container; Figure 4 Fig. 6 is a perspective view of the container in a loaded state showing the structure for supporting goods in the container;

[0026] Figure 7 Fig. 7 is a side view of the container in a loaded state showing the structure for supporting goods in the container; Figure 4 Fig. 8 is a perspective view of the container in a loaded state showing the structure for supporting goods in the container;

[0027] Figure 8 Fig. 9 is a side view of the container in a loaded state showing the structure for supporting goods in the container; Figure 4 Fig. 10 is a perspective view of the container in a loaded state showing the structure for supporting goods in the container;

[0028] Figure 9 Fig. 11 is a schematic view of the principle for determining the size of the components in the structure for supporting goods in the container; Figure 4 Fig. 12 is a schematic view of the loading method when the side support and the transverse abutting member are used;

[0029] Figure 10 Fig. 13 is a schematic view of the loading method when the side support and the transverse abutting member are used; Figure 1 DETAILED DESCRIPTION

[0030] In order to better explain the present application, and to make it easier to understand, the present application will be described in detail below with reference to the accompanying drawings, through specific embodiments. In this document, the orientation of the terms "upper", "lower", and the like are referred to the orientation of the container supporting device of the present application, that is, the orientation when the container supporting device of the present application is used for transportation. Figures 3-8

[0031] In order to better understand the above technical solutions, the exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to make the present application clearer, more thorough, and to fully convey the scope of the present application to those skilled in the art.

[0032] With reference to Figures 1 to 10 , the present embodiment provides a method for transporting cylindrical goods in a container. In particular, the container is transported by railway. ​​

[0033] The loading method of the cylindrical goods in the container of the embodiment includes an empty state and a loading state entered after the empty state, and the contents in the loading state are not described, which is basically to maintain the state in the empty state.

[0034] The empty state is:

[0035] A row of middle supports 1 is placed on the floor 5 in the container, and multiple middle supports 1 are sequentially adjacent and form joints. The adjacent surfaces of adjacent middle supports 1 are planes, and the arrangement direction of the middle supports 1 is the axis direction of the cylindrical goods 6 to be placed. In the embodiment, a single middle support 1 is a cuboid or a cube, which is an elastic member and can be compressed by the cylindrical goods 6 to provide elastic support for the cylindrical goods 6. A row of side supports 2 is placed on the left and right sides of the above-mentioned row of middle supports 1, and the side supports 2 are also placed on the floor 5 in the container. Multiple side supports 2 in each row are sequentially adjacent and form joints, and the adjacent surfaces of adjacent side supports 2 are planes. At the same time, the side supports 2 and the middle supports 1 are adjacent to form joints, and the adjacent surfaces of adjacent side supports 2 and middle supports 1 are planes. The side supports 2 in the left and right rows are symmetrically arranged about the center plane of the middle supports 1. The top surface of the side support 2 has an arc-shaped groove 21, and the groove surface of the arc-shaped groove 21 extends downward in the direction toward the middle support 1. The outer peripheral surface of the side support 2 further includes an inner side vertical surface, a bottom surface, an outer side vertical surface, and a top surface sequentially connected at the end of the arc-shaped groove 21. The outer side vertical surface and the inner side vertical surface are parallel, the top surface and the bottom surface are parallel, the top surface / bottom surface is perpendicular to the outer side vertical surface / inner side vertical surface, and the two end surfaces of the side support 2 are also planes perpendicular to the bottom surface and the inner side vertical surface. In other words, the side support 2 is formed by cutting a part of a cuboid or a cube to form the arc-shaped groove 21. The side support 2 is also an elastic member and can be compressed by the cylindrical goods 6 to provide elastic support for the cylindrical goods 6.

[0036] Therefore, the groove surfaces of the arc-shaped grooves 21 of the side supports 2 in the left and right rows and the top surfaces of the middle supports 1 adjacently form a supporting space for the cylindrical goods 6, and the axis direction of the arc-shaped grooves 21 is parallel to the axis direction of the supporting space, that is, parallel to the axis direction of the cylindrical goods 6 placed in the supporting space subsequently.

[0037] Referring to Figures 4 to 6 In the empty state, the top surface of the middle support 1 is higher than the lowest point (the top edge of the inner side vertical surface is the lowest point of the groove surface of the arc-shaped groove 21) of the groove surface of the arc-shaped groove 21 of the side support 2 on the left and right sides, that is, the supporting space protrudes upward in the middle.

[0038] Referring to Figures 1-3 , Figure 8 and Figure 9On the basis of the above empty state, the plurality of cylindrical goods 6 are placed in the supporting space, and the cylindrical goods 6 are supported on the middle supporting member 1 and the arc-shaped grooves 21 on the left and right sides of the middle supporting member 1, forming a loaded state.

[0039] In the loaded state:

[0040] The plurality of cylindrical goods 6 are placed in the supporting space, and the plurality of cylindrical goods 6 are arranged at intervals, and the arrangement direction is the arrangement direction of the middle supporting member 1. One cylindrical good 6 simultaneously presses down the arc-shaped grooves 21 of the middle supporting member 1 and the side supporting members 2 on the left and right sides of the middle supporting member 1. The top surface of the middle supporting member 1 and the groove surface of the arc-shaped grooves 21 of the side supporting members 2 on the left and right sides are all pressed down to fit the outer circumferential surface of the cylindrical goods 6. Among them, the "fit" described here does not require all the arc surfaces 21 of the groove surface to fit the cylindrical goods 6. It depends on the diameter of the cylindrical goods 6 and the height of the side supporting members 2. As long as the fitted part is enough to provide support for the cylindrical goods 6, especially lateral support. Of course, considering the comprehensive consideration of saving materials and good support, the arc shape of the groove surface of the arc-shaped grooves 21 and the height of the side supporting members 2 are designed to be all fitted with the outer circumferential surface of the cylindrical goods 6 after being pressed down. The better dimension design of the middle supporting member 1 and the side supporting member 2 is described in detail later.

[0041] In summary, the present embodiment abandons the integral foam supporting method in the prior art, and divides the whole into parts, using the split middle supporting member 1 and the side supporting members 2 adjacent to the two sides thereof to form the supporting space of the cylindrical goods 6. There is a joint between the middle supporting member 1 and the side supporting members 2 due to the adjacency, which provides a stretching space for the possible compression fracture phenomenon of the supporting member. At the same time, the middle supporting member 1 is mainly used to bear the longitudinal weight of the cylindrical goods 6, and the side supporting members 2 are mainly used to provide lateral support for the cylindrical goods 6. In the empty state, the top surface of the middle supporting member 1 is higher than the lowest point of the groove surface of the arc-shaped grooves 21 of the side supporting members 2. After loading the cylindrical goods 6, the top surface of the middle supporting member 1 and the arc-shaped grooves 21 of the side supporting members 2 are all pressed down to fit the outer circumferential surface of the cylindrical goods 6. During this process, the compression amount of the middle supporting member 1 is greater than that of the side supporting members 2. During transportation, the middle supporting member 1 bears more weight and is compressed more than the side supporting members 2 on both sides, and is more prone to deformation and fracture than the side supporting members 2. In this way, the side supporting members 2 can be repeatedly used by sacrificing the middle supporting member 1. The integral foam supporting method in the prior art has irregular and uncontrollable fracture positions, and must be replaced as a whole once it is broken.

[0042] Thus, the cylindrical goods 6 are supported by the elastic intermediate supports 1 and side supports 2, and after one transportation, the whole support structure does not need to be replaced, but only the broken intermediate supports 1 need to be replaced, thereby reducing the transportation cost. In the embodiment, the length of the single side support 2 along its arrangement direction is greater than the length of the single intermediate support 1 along its arrangement direction. Thus, in the same length range, the number of the intermediate supports 1 is greater than the number of the side supports 2, and the joint between the adjacent intermediate supports 1 forms the breaking position, i.e., relatively more intermediate supports 1 reduce the single volume and the cost. At this time, one cylindrical good 6 is generally supported by multiple intermediate supports 1, and it is possible that the cylindrical good 6 completely covers part of the intermediate supports 1, but one or two intermediate supports 1 are not completely covered by the cylindrical good 6. At this time, the intermediate supports 1 completely covered by the cylindrical good 6 are depressed as a whole and are less likely to be cracked. However, the partially covered intermediate supports 1 are depressed by the covered part and are not depressed by the uncovered part, thereby forming a height difference; since the compression amount of the intermediate supports 1 is large, the breaking is easily formed at the position of the height difference. Thus, the breaking position in the support structure of the embodiment is controllable compared with the prior art.

[0043] For example, in combination with Figure 4 and Figure 7 reference, the length of one cylindrical good 6 along its axial direction is between the total length of two intermediate supports 1 and the length of one intermediate support 1. One cylindrical good 6 completely covers one intermediate support 1; and for another intermediate support 1, only one half is covered, thereby the joint between the covered part and the uncovered part of the intermediate support 1 is easy to be broken. Of course, in Figure 4 and Figure 7 , the length of the cylindrical good 6 along its axial direction is less than the length of the side support 2 along its arrangement direction, some cylindrical goods 6 only cover one side support 2, and then the height difference is not formed on the side support 2 when it is pressed; some cylindrical goods 6 cover two side supports 2, and since the compression amount of the side support 2 is relatively small, the height difference formed between the covered part and the uncovered part by the cylindrical good 6 is small, and the breaking is not easy to be formed at the position of the height difference.

[0044] Meanwhile, according to the length of the container and the axial dimension of the goods, the length of the intermediate support 1 in one row can be different, and the length of the side support 2 in one row can be different.

[0045] In addition, in the present embodiment, the length of the individual middle support 1 and the individual side support 2 in the arrangement direction thereof is made greater than or equal to the respective widths thereof (preferably greater than). The width of the middle support 1 and the side support 2 is affected by the outer radius of the cylindrical cargo 6 and the width of the container, and the height of the middle support 1 and the side support 2 is affected by the outer radius of the cylindrical cargo 6 and the compression amount that determines the supporting effect, and cannot be too large or too small. By making the length greater than the width, the middle support 1 and the individual side support 2 are made as less "tall and thin" as possible, and the stability is thereby improved.

[0046] Of course, as shown in Figure 4 and Figure 5 , the middle one of the middle supports 1 is shorter than the others and has a length that is less than the width thereof, and the middle one of the side supports 2 is shorter than the others. The reason for this is that, depending on the size of the blank from which the supports are manufactured, and in order to ensure the stability of each support and the stability of the overall assembly, most of the middle supports 1 are designed to have the same appropriate size, and most of the side supports 2 are designed to have the same appropriate size, but a few of the middle supports 1 and the side supports 2 are provided to make appropriate adjustments to the length of the container.

[0047] Referring to Figure 6 , in the unloaded state: the middle support 1 is a cuboid, the height h1 thereof is the height from the top surface to the bottom surface, and the width D1 thereof is the distance between the left and right surfaces; the height of the outer vertical surface of the side support 2 is the height of the top surface of the side support 2, h2; the height of the inner vertical surface of the side support 2 is the height of the lowest point of the groove surface of the side support 2, h3; the distance between the inner vertical surface and the outer vertical surface of the side support 2 is the width of the bottom surface of the side support 2, D2; and the top surface of the side support 2 does not include the arc-shaped groove 21.

[0048] The width D1 of the middle support 1, the height h1 of the middle support 1, the height h2 of the top surface of the side support 2, the height h3 of the lowest point of the groove surface of the side support 2, the width D2 of the bottom surface of the side support 2, the width D3 of the top surface of the side support 2, and the arc of the arc-shaped groove 21 are determined so as to satisfy the following conditions:

[0049] As will be described below with reference to Figure 6 and Figure 9 , first, as a basis, since the middle support 1 and the side support 2 are directly or indirectly (for example, via the transverse abutting member 3 described below) pressed between the two side walls of the container when actually used, the respective widthwise dimensions of the middle support 1 and the side support 2 are set to be constant in the unloaded state and the loaded state.

[0050] An XY coordinate system is established with the center of the bottom surface of the middle support 1 in the width direction as the coordinate system origin point O, that is, the X axis and the Y axis are formed relative to the coordinate system origin point O.

[0051] A point A on the Y axis is obtained by moving upward along the Y axis from the coordinate system origin point O by a preset ground clearance distance OA, and the distance OA is the preset ground clearance distance; and a first circle center O1 on the Y axis is obtained by moving upward along the Y axis from the point A by the outer circle radius r of the cylindrical cargo 6, and the first circle center O1 can be preset / hypothetical as the axis center of the cylindrical cargo 6 in the loaded state. The preset ground clearance distance is 100-110 mm, and the outer circle radius r of the cylindrical cargo 6 is 500-800 mm.

[0052] A first inclined line l1 is drawn from the first circle center O1 to one side of the Y axis by a first preset angle a1, wherein the first preset angle a1 is 15°-17°, preferably 15°. The first inclined line l1 intersects the X axis to obtain an intersection point B, and the point B is mirrored about the Y axis to obtain a point C on the X axis on the other side of the Y axis. The width D1 of the middle support 1 in the unloaded state is equal to the distance between the points B and C.

[0053] The height h1 of the middle support 1 in the unloaded state is equal to the preset ground clearance distance divided by a first preset compression percentage, and the first preset compression percentage is the percentage of the height of the center of the top surface of the middle support 1 in the loaded state to the height of the center of the top surface of the middle support 1 in the unloaded state. The first preset compression percentage is selected to be 30%-50%, preferably 30%. Accordingly, the point E is obtained by moving upward along the X axis from the point O by the height h1 of the middle support 1 in the unloaded state. In the unloaded state, the height h1 of the middle support 1 is equal to the distance between the points O and E.

[0054] A first vertical line l2 is drawn upward from the point B perpendicular to the X axis, and an arc with the first circle center O1 as the center and the outer circle radius r of the cylindrical cargo 6 as the radius intersects the first vertical line l2 to obtain an intersection point I, and the point I is the lowest point of the groove surface of the side support 2 in the loaded state.

[0055] The height of the lowest point of the groove surface of the side support 2 in the unloaded state is equal to the distance between the points B and I divided by a second preset compression percentage, and the second preset compression percentage is the percentage of the height of the lowest point of the arc-shaped groove 21 of the ideal side support 2 in the loaded state and the unloaded state, and is selected to be 50%-70%, preferably 70%.

[0056] The point D is obtained by moving upward from the point C along a direction perpendicular to the X axis by the height of the lowest point of the groove surface of the side support 2 in the unloaded state, and the point D is the lowest point of the groove surface of the side support 2 in the unloaded state.

[0057] Draw an arc line l3 with D point as the center and the outer circle radius r of the cylindrical cargo 6 as the radius, and the arc line l3 intersects with the Y axis to obtain the intersection point second center O2.

[0058] Draw a second inclined line l4 from the Y axis to the side of D point with the second center O2 as the center and offset by a second preset angle a2, wherein the second preset angle a2 is 45°-47°, preferably 45°. The second inclined line l4 intersects with the X axis to obtain the intersection point F point, and the second inclined line l4 intersects with the arc line with the second center O2 as the center and the outer circle radius r of the cylindrical cargo 6 as the radius to obtain the intersection point G point.

[0059] Draw a second vertical line l5 from F point vertically to X axis, and draw a horizontal line l6 from G point to the side of F point, and the second vertical line l5 and the horizontal line l6 intersect to obtain the intersection point H point.

[0060] The top surface height h2 of the side support 2 in the empty state is greater than or equal to the distance between F point and H point. That is, the distance between F point and H point is the minimum value of the top surface height h2 of the side support 2 in the empty state.

[0061] The bottom surface width of the side support 2 in the empty state is greater than or equal to the distance between C point and F point, and the distance between C point and F point is the minimum value of the bottom surface width D2 of the side support 2 in the empty state.

[0062] At the same time, the top surface width D3 of the side support 2 in the empty state is greater than or equal to 200mm.

[0063] In summary, with the line connecting F point and H point shown in the figure as the reference, the outer vertical surface forming the side support 2 can be moved away from the Y axis, but cannot be moved towards the Y axis. For example, considering the width of the container, F point in the figure can be moved away from the Y axis to make the overall width of the side support 2 wider, thereby making it more convenient to be clamped directly by the two side walls of the container or through the transverse abutting piece 3 to be introduced later, and more conducive to stability. Of course, the top surface width and the bottom surface width of the side support 2 in the empty state cannot be too wide, on the one hand, it is limited by the size of the container, and on the other hand, it is also to further save costs.

[0064] The arc surface of the arc-shaped groove 21 is the part of the arc line with the second center O2 as the center and the outer circle radius r of the cylindrical cargo 6 as the radius between D point and G point.

[0065] Wherein, the selection of a1 and a2 is based on the fact that the safety inclination angle of railway transportation is within 6°, and the stability loss angle of sea container is within 35°, so a1 and a2 are selected by expanding the two specified angles respectively to ensure the safety of the cargo even if there is inclination during transportation.

[0066] The preset ground clearance is the lowest point height of the cylindrical cargo 6 in the loaded state. In the transportation process, in order to prevent the cargo from being soaked in water, a minimum ground clearance is required, which is generally 100 mm, and can also be selected in the range of 100-110 mm. Of course, the ground clearance cannot be too high, because the ground clearance is limited by the height of the container, and too high center of gravity will affect the stability and increase the cost.

[0067] In the embodiment, the percentage of the height of the lowest point of the arc-shaped groove 21 in the loaded state to the height of the lowest point of the arc-shaped groove 21 in the unloaded state is 70%; of course, in other embodiments, it can also be selected in the range of 50-70%. The side support 2 must have a certain compression amount to play its role, so as to avoid the lateral shaking and jumping of the cylindrical cargo 6 to the upper side of the side support 2 and the danger.

[0068] Through experiments, the control of the above compression rate can ensure that the side support 2 is relatively stable, and the damage rate is controlled, that is, even if the side support 2 without a reinforcing layer, the side support 2 can be used repeatedly more than 10 times without damage.

[0069] In addition, because the transverse distance from the lowest point of the groove surface of the arc-shaped groove 21 to the center of the cylindrical cargo 6 becomes farther and farther away to both sides, the compression amount of the arc-shaped groove 21 from the lowest point of the groove surface to both sides will become smaller and smaller, and the compression amount (i.e. compression rate) of the arc-shaped groove 21 is not a uniform value. Similarly, the top surface of the middle support 1 is compressed from a plane to a curved surface, and the compression amount (i.e. compression rate) of each position is different. Therefore, the compression amount of the middle support 1 is calculated at the center position of the top surface thereof; the compression amount of the side support 2 is calculated at the lowest point of the groove surface of the arc-shaped groove 21 thereof.

[0070] In the embodiment, the outer circle radius r of the cylindrical cargo 6 is 625 mm, and the above size design method is used to calculate the obtained sizes of the middle support 1 and the side support 2, which are suitable for the actual transportation of the coiled steel with an outer circle radius of 500-800 mm, that is, suitable for the vast majority of coiled steel transportation needs.

[0071] In the embodiment, the preset ground clearance is equal to 100 mm, and when the distance between the calculated H point and the G point is less than 200 mm:

[0072] The H point and the F point are moved away from the Y axis at equal distances, so that the width of the top surface of the side support 2 is greater than or equal to 200 mm; or

[0073] The values of the first preset angle α1 and / or the second preset angle α2 are increased, so that the width of the top surface of the side support 2 is greater than or equal to 200 mm.

[0074] Guided by the above dimensional design methods, specific dimensions can be selected that meet the requirements for stable support, are safe, and have a relatively lower cost.

[0075] Specifically, in this embodiment, the initial density of the central support member 1 is 20 kg / m³. 3 (That is, the density after processing and before use), the material is EPS polystyrene foam. If the density is too high, the support component will be brittle and easily break, with poor ductility, making it more difficult to predict and control the fracture location; and after the fracture is recovered, it can be used to produce other types of insulation materials. If the density is too low, it will be too easy to compress. The initial density of the middle support component 1 can still be 19-21 kg / m³. 3 Select from the options. The initial density of side support 2 is 20 kg / m³. 3 (i.e., the density after processing and before use), the material is EPS polystyrene foam. Too high a density makes the support components brittle and easily broken, with poor ductility, increasing the difficulty of predicting and controlling the fracture location; furthermore, the broken components can be recycled and used to produce other types of insulation materials. Too low a density would make compression too easy; the initial density of the central support component 1 can be selected between 19-21 kg / m³. The central support component 1 has a large compression capacity and is relatively durable after compression; therefore, considering cost as the primary factor, the inexpensive EPS polystyrene foam material is chosen. The side support component 2 can also be selected from EPP polypropylene foam, EPE polyethylene foam, and EPO copolymer foam. Although these materials are slightly more expensive, they can reduce breakage and thus extend service life. In this way, the cost of the support device is controlled, while the reinforcement effect is good.

[0076] Of course, the materials for both the central support 1 and the side support 2 can be selected from EPS polystyrene foam, EPP polypropylene foam, EPE polyethylene foam, and EPO copolymer foam. Since these are consumable materials, choosing these materials provides elasticity while being less expensive and lighter. Furthermore, a reinforcing layer can be provided on the top surface of the central support 1 and / or the groove surface of the arc-shaped groove 21 of the side support 2. This can be achieved through surface hardening treatment, attaching nylon mesh, or spraying with special materials (such as polyurea). This increases strength and reduces breakage, especially for the side support 2 where breakage is undesirable.

[0077] Preferably, the elasticity of the central support member 1 is greater than or equal to the elasticity of the side support member 2; more preferably, the elasticity of the central support member 1 is greater than the elasticity of the side support member 2, so that the central support member 1 is subjected to more compression, bears more longitudinal pressure from the cylindrical cargo 6, and better protects the side support member 2.

[0078] If the middle support 1 protrudes too much relative to the side support 2 in the empty state, after the goods are put in, the middle support 1 is compacted while the side support 2 is compressed too little and soft, so that the lateral support for the goods is weak; if the middle support 1 protrudes too little relative to the side support 2 in the empty state, after the goods are put in, the middle support 1 is compressed too little and soft, while the part of the side support 2 adjacent to the middle support 1 is compacted, so that the side support 2 is easily damaged. Therefore, the appropriate compression amount of the middle support 1 and the side support 2 makes the middle support 1 bear more force and the side support 2 bear less force, sacrificing the middle support 1 to protect the side support 2.

[0079] Further, in the present embodiment, the cylindrical goods 6 transported are steel coils, the outer circle radius of the steel coil is 500-800mm, the weight of the steel coil is 5-15t, and the ratio of the outer circle diameter of the steel coil to the width of the steel plate forming the steel coil is less than 1.4. At this time, through the use of the above-mentioned size design method combined with a large number of tests, the preferred sizes of the middle support 1 and the side support 2 in the empty state are summarized as follows:

[0080] With reference to Figure 6 , the height h1 of the middle support 1 is 200-335mm, and the width D1 (the size in the direction perpendicular to the axis direction of the supporting space) is 325-560mm; the height h3 of the lowest point of the groove bottom of the arc-shaped groove 21 of the side support 2 is 180-320mm, the top surface height h2 of the side support 2 is 305-630mm, the bottom surface width D2 of the side support 2 is 500-870mm, and the top surface width of the side support 2 is 200-465mm.

[0081] In general, the sum of the width D1 of the middle support 1 and the bottom surface width D2 of the two side supports 2 is greater than the diameter of the cylindrical goods 6; at the same time, the top surface width D3 of the side support 2 is greater than or equal to 200mm.

[0082] In addition, the present embodiment is provided with a row of transverse abutting pieces 3 on the outside of the left and right rows of side supports 2, the transverse abutting pieces 3 are clamped between the side supports 2 and the container side walls, so that the container side walls clamp a row of transverse abutting pieces 3, a row of side supports 2, a row of middle supports 1, another row of side supports 2, and another row of transverse abutting pieces 3. The adjacent abutting pieces in each row of transverse abutting pieces 3 do not have to be connected, and can be spaced apart. The transverse abutting pieces 3 abutting the outside of the side supports 2 on the left and right sides are arranged in pairs and symmetrically about the center plane of the middle support 1, and the abutting surfaces of the side supports 2 and the transverse abutting pieces 3 are planes.

[0083] Further, the joints of the two adjacent middle supporting members 1 are staggered with the joints of the two adjacent side supporting members 2, i.e. the middle supporting members 1 abut against the joints of the two adjacent side supporting members 2, and the side supporting members 2 abut against the joints of the two adjacent middle supporting members 1. The two end edges of each transverse abutting member 3 in the axial direction of the middle supporting member 1 are staggered with the joints of the two adjacent side supporting members 2, i.e. the transverse abutting member 3 abuts against the joints of the two adjacent side supporting members 2. Referring to Figure 2 The above staggered form is similar to the staggered form of the joints of a red brick wall. During transportation, the middle supporting members 1 are stable under the pressure of the cylindrical goods 6; the outer side of the transverse abutting member 3 abuts against the container wall and is also stable; and the middle supporting members 1 and the transverse abutting member 3 abut against the joints of the two adjacent side supporting members 2 from both sides, so that the two rows of side supporting members 2 can better maintain the smooth shape of the concave groove.

[0084] Referring to Figure 10 The shape of each transverse abutting member 3 is the same as the shape of the groove enclosed by the two arc-shaped grooves 21 in a pair of side supporting members 2 after the pair of side supporting members 2 are spliced together, specifically, the outer periphery of each transverse abutting member 3 is enclosed by two arc surfaces 31 and a flat surface, and the shape of the two arc surfaces 31 is consistent with the shape of the arc-shaped grooves 21 of the left and right side supporting members 2. The flat surface of the transverse abutting member 3 is placed downward on the container floor 5, and the arrangement direction of the two arc surfaces 31 is the axial direction of the middle supporting member 1. The transverse abutting member 3 of the present embodiment is actually the waste material cut off when a pair of side supporting members 2 is manufactured, i.e. a cuboid, the middle part is cut off to form the transverse abutting member 3, and the remaining material is cut off from the middle line, thereby forming a pair of side supporting members 2 with symmetric arc-shaped grooves. The waste material cut off when a pair of side supporting members 2 is manufactured can be used as a transverse abutting member 3, or a plurality of transverse abutting members 3 can be further cut off from the waste material in the length direction. It can be understood that, in this manufacturing method, the material of the transverse abutting member 3 is the same as the material of the side supporting member 2.

[0085] In addition, referring to Figure 10 , during transportation of the supporting members and the abutting members, the two rows of side supporting members 2 are spliced together, and the transverse abutting member 3 is placed in the two spliced arc-shaped grooves to form a cuboid structure, thereby reducing the area occupied during transportation of the supporting members and the abutting members. It can be understood that, the shape of the transverse abutting member 3 is selected to be the shape of the two arc-shaped grooves after a pair of side supporting members 2 are spliced together, on the one hand, the waste material cut off from the side supporting member 2 can be used to form the transverse abutting member 3 during manufacturing of the supporting members and the abutting members, thereby saving manufacturing cost; on the other hand, the transportation cost of the supporting members and the abutting members is saved during transportation, thereby comprehensively implementing the concept of designing the low-cost supporting device.

[0086] Of course, in other embodiments, the material of the transverse abutment 3 is one of EPS polystyrene foam material, EPP polypropylene foam material, EPE polyethylene foam material, EPO copolymer foam material, which can be the same as or different from the material of other components.

[0087] Further, the front end of the frontmost intermediate support 1 in a row is provided with a spacer 4 clamped between the intermediate support 1 and the front wall of the container, the rear end of the rearmost intermediate support 1 in a row is provided with a spacer clamped between the intermediate support 1 and the door of the container, and the spacers 4 are arranged between the end faces of two adjacent cylindrical cargos 6. This ensures the stability of the intermediate supports 1 and the side supports 2. The size of the above-mentioned spacers 4 is appropriately selected according to the length of the container and the size of the important components, i.e. the intermediate supports 1 and the side supports 2, and preferably the waste material produced when the intermediate supports 1 and the side supports 2 are manufactured is used to reduce the cost. Of course, it should be ensured that the surfaces of the spacers 4 in contact with the intermediate supports 1, the side supports 2 and the container are planar.

[0088] The material of the above-mentioned spacers is one of EPS polystyrene foam material, EPP polypropylene foam material, EPE polyethylene foam material, and EPO copolymer foam material.

[0089] In the description of the present application, it should be understood that the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0090] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0091] In the present application, unless otherwise explicitly specified and limited, a first feature is "on" or "under" a second feature can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature is "over", "above" and "on top of" a second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature is "under", "below" and "underneath" a second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0092] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0093] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A method of shipping cylindrical cargo within a container, characterized by, The empty state and a loaded state entered after the empty state are included; The empty state is: A plurality of middle supports (1) are arranged in the container, and the middle supports (1) are elastic supports; A plurality of side supports (2) are arranged on the left and right sides of the middle supports (1), and the side supports (2) are in abutment with the middle supports (1); the top surface of the side supports (2) has an arc-shaped groove (21), and the groove surface of the arc-shaped groove (21) extends downward in a direction towards the middle supports (1); the side supports (2) are elastic supports; The top surface of the middle supports (1) is higher than the lowest point of the groove surface of the arc-shaped groove (21) of the side supports (2) on the left and right sides; The loaded state is: A plurality of cylindrical cargos are arranged along the arrangement direction of the middle supports (1) and are supported on the middle supports (1) and the arc-shaped grooves (21) on the left and right sides thereof; the top surface of the middle supports (1) and the groove surface of the arc-shaped grooves (21) on the left and right sides are all depressed to be in abutment with the outer circumferential surface of the cylindrical cargos; The elasticity of the middle supports (1) is greater than or equal to the elasticity of the side supports (2); The height of the center of the top surface of the middle supports (1) in the loaded state is 30-50% of the height of the center of the top surface of the middle supports (1) in the empty state; The height of the lowest point of the groove surface of the arc-shaped groove (21) of the side supports (2) in the loaded state is 50-70% of the height of the lowest point of the groove surface of the arc-shaped groove (21) of the side supports (2) in the empty state.

2. The method according to claim 1, wherein the width of the middle supports (1) in the empty state, the height of the middle supports (1), the height of the top surface of the side supports (2), the height of the lowest point of the groove surface of the side supports (2), the width of the bottom surface of the side supports (2), the width of the top surface of the side supports (2), and the arc of the arc-shaped groove are determined to satisfy the following conditions: An XY coordinate system is established with the center of the bottom surface of the middle supports (1) in the width direction thereof as a coordinate system circle point (O); A first circle center (O1) located on the Y axis is obtained by moving a preset ground clearance and an outer circle radius (r) of the cylindrical cargo upward along the Y axis from the coordinate system circle point (O), wherein the preset ground clearance is 100-110 mm, and the outer circle radius (r) of the cylindrical cargo is 500-800 mm; A first inclined line (l1) is drawn from the Y axis to one side by a first preset angle (α1) with the first circle center (O1) as a circle point, wherein the first preset angle (α1) is 15°-17°, the first inclined line (l1) intersects the X axis to obtain an intersection point B, the B point is mirrored about the Y axis to obtain a C point located on the X axis on the other side of the Y axis, and the width of the middle supports (1) in the empty state is equal to the distance between the B point and the C point. ​ The height of the middle support (1) in the empty state is equal to the preset ground clearance divided by a first preset compression percentage, and the first preset compression percentage is 30%-50%; A first vertical line (l2) is drawn upward from the B point and perpendicular to the X axis, and an arc with the first center (O1) as the center and the outer radius (r) of the cylindrical cargo as the radius intersects the first vertical line (l2) to obtain an intersection point I point; The groove surface lowest point height of the side support (2) in the empty state is equal to the distance between the B point and the I point divided by a second preset compression percentage, and the second preset compression percentage is 50%-70%; The groove surface lowest point height of the side support (2) in the empty state is moved upward from the C point and perpendicular to the X axis to obtain a D point; An arc line (l3) is drawn with the D point as the center and the outer radius (r) of the cylindrical cargo as the radius, and the arc line (l3) intersects the Y axis to obtain a second center (O2); A second inclined line (l4) is drawn from the Y axis and offset by a second preset angle (α2) towards the side of the D point with the second center (O2) as the center, wherein the second preset angle (α2) is 45°-47°, the second inclined line (l4) intersects the X axis to obtain an intersection point F point, and the second inclined line (l4) intersects the arc line with the second center (O2) as the center and the outer radius (r) of the cylindrical cargo as the radius to obtain an intersection point G point; A second vertical line (l5) is drawn upward from the F point and perpendicular to the X axis, and a horizontal line (l6) is drawn from the G point to the side where the F point is located, and the second vertical line (l5) and the horizontal line (l6) intersect to obtain an intersection point H point; The top surface height of the side support (2) in the empty state is greater than or equal to the distance between the F point and the H point; The bottom surface width of the side support (2) in the empty state is greater than or equal to the distance between the C point and the F point; The top surface width of the side support (2) in the empty state is greater than or equal to 200mm; The arc surface of the arc-shaped groove (21) is the part of the arc line between the D point and the G point, with the second center (O2) as the center and the outer radius (r) of the cylindrical cargo as the radius.

3. The method for loading cylindrical cargo in a container according to claim 2, wherein, when the distance between the H point and the G point is less than 200mm by selecting the preset ground clearance equal to 100mm: The H point and the F point are moved away from the Y axis in equal distances, so that the top surface width of the side support (2) is greater than or equal to 200mm; Or The values of the first preset angle (α1) and / or the second preset angle (α2) are increased, so that the top surface width of the side support (2) is greater than or equal to 200mm.

4. The method for loading cylindrical cargo in a container according to claim 2, wherein, ​ The outer circle radius (r) of the cylindrical goods is selected as 625mm, and the shipping method is suitable for cylindrical goods with an outer circle radius (r) of 500-800mm.

5. The shipping method of the cylindrical goods in the container according to claim 2, characterized in that, in the empty state: the middle support (1) is a cuboid or a square, and the top surface and the bottom surface of the side support (2) are perpendicular to the outer vertical surface and the inner vertical surface, respectively; the height of the middle support (1) is 200-335mm, and the width is 325-560mm; the lowest point of the groove bottom of the arc-shaped groove (21) of the side support (2) is 180-320mm, the height of the top surface of the side support (2) is 305-630mm, the width of the bottom surface of the side support (2) is 500-870mm, and the width of the top surface of the side support (2) is 200-465mm.

6. The shipping method of the cylindrical goods in the container according to claim 1, characterized in that, the length of a single side support (2) along its arrangement direction is greater than the length of a single middle support (1) along its arrangement direction, and the seams of adjacent middle supports (1) are staggered with the seams of adjacent side supports (2); the length of a single middle support (1) and a single side support (2) along their arrangement directions is greater than or equal to their respective widths.

7. The shipping method of the cylindrical goods in the container according to claim 1, characterized in that, in the empty state: the left and right two columns of side supports (2) are arranged in pairs and symmetrically about the center plane of the middle support (1); a column of transverse abutting pieces (3) is arranged on the outer side of the left and right two columns of side supports (2), and the transverse abutting pieces (3) are clamped between the side supports (2) and the side walls of the container; the left and right two columns of transverse abutting pieces (3) are arranged in pairs and symmetrically about the center plane of the middle support (1); the two end edges of each transverse abutting piece (3) in the axial direction of the middle support (1) are staggered with the seams of adjacent side supports (2); the shape of the transverse abutting piece (3) is the same as the shape of the groove enclosed by two arc-shaped grooves (21) after a pair of side supports (2) are spliced together; a cushion block (4) is arranged at each of the front and rear ends of the middle support (1) and clamped between the middle support (1) and the door and front wall of the container, and a cushion block (4) is arranged between the end faces of adjacent two cylindrical goods.

8. The shipping method of the cylindrical goods in the container according to claim 7, characterized in that, the materials of the middle support (1), the side support (2), and the transverse abutting piece (3) are one of EPS polystyrene foam material, EPP polypropylene foam material, EPE polyethylene foam material, and EPO copolymer foam material; the top surface of the middle support (1) and / or the groove surface of the arc-shaped groove (21) of the side support (2) are provided with a reinforcing layer.

9. The method of shipping cylindrical goods within a container of claim 1, wherein, The initial density of the middle support (1) and the side support (2) is 19-21 kg / m 3 , and the material is EPS polystyrene foam material.

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