Arc-shaped protection device and goods shelf assembly

Abstract

The utility model discloses an arc-shaped protection device and a goods shelf assembly, and belongs to the technical field of steel billet transportation. The protective device comprises a cross beam and stand columns arranged at the two ends of the cross beam. The cross beams and the stand columns jointly define a limiting space used for containing round billets to be transported. And the supporting surface of the stand column is an arc surface, and the supporting surface is in surface contact with the round billet to disperse the impact force of the round billet on the stand column, so that the fatigue damage degree of the stand column can be effectively reduced. In addition, the utility model further provides a goods shelf assembly, the characteristics that the head part of the arc column supporting surface is small and the root part of the arc column supporting surface is large are utilized, so that when the arc column supporting surface is subjected to a horizontal component force lever effect, equivalently, reinforcing ribs are used for clamping, and the torque resisting effect is obviously improved. Meanwhile, comprehensive stress analysis is carried out, and the lever effect of the component force in the horizontal direction borne by the arc-shaped stand column in the actual operation on the arc-shaped column and the torque effect generated by the lever effect are greatly attenuated.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel billet transportation, and more specifically relates to an arc-shaped protective device and a shelf assembly. Background Art

[0002] Billets are a product of steel mills and serve as raw materials for further processing into various steel products at rolling mills. Billets from steel mills are typically transported to rolling mills for further processing by truck or rail. Truck transport offers the advantage of greater flexibility compared to rail transport.

[0003] The vehicles currently used by domestic steel mills to transport high-temperature steel billets typically utilize a semi-trailer with an insulation layer. Billets are stacked directly onto the vehicle bed or insulation layer, making them susceptible to slipping during transport, potentially compromising vehicle safety. Therefore, to prevent billets from falling off the vehicle bed during trailer transport, columns are often added to both sides of the vehicle bed. Traditional columns are often welded directly to the semi-trailer's side beams. However, during billet lifting and trailer travel, the billets frequently collide with the columns, causing damage. Furthermore, since the vehicle bed side beams are not designed to withstand high impact forces, damage to the columns can also damage the vehicle bed itself. Furthermore, the support surfaces of traditional columns are flat. During the transportation of round billets, the columns are in line contact with the billets at a high point, subjecting the columns to repeated alternating impacts caused by the lever effect torque, which accelerates fatigue damage.

[0004] After searching, it was found that a semi-trailer for transporting high-temperature steel billets was disclosed in the patent CN101643091A. In this application, multiple pairs of columns are provided on both sides of the longitudinal direction of the load-bearing platform, and the length direction of the columns is perpendicular to the load-bearing platform. When the side panels on the left and right sides of the car are in a closed state, the columns are located on the inner surface of the side panels. When the high-temperature steel billets to be transported are placed in the car, their bottom surfaces are in contact with the rail steel, and the sides can be in contact with the columns, thereby avoiding direct contact between the high-temperature steel and the bottom plate or side panels during transportation, further reducing the contact area between the high-temperature steel and the frame, reducing heat transfer, and thus having a good thermal insulation effect for the high-temperature steel billets. However, no effective solution has been given to the problem that the column and the round billet are in line contact and the contact point is high, which easily forms a lever impact effect and accelerates the damage of the column. Utility Model Content

[0005] 1. Problems to be solved

[0006] In response to at least some of the problems existing in the above-mentioned prior art, the present invention proposes an arc-shaped protective device, the purpose of which is to solve the problem that in the existing billet protective device, there is line contact between the column and the round billet, which easily accelerates fatigue damage of the column.

[0007] 2. Technical solution

[0008] In order to solve the above problems, the technical solutions adopted by the present invention are as follows:

[0009] The utility model provides an arc-shaped protective device, comprising a crossbeam and columns arranged at both ends of the crossbeam; wherein,

[0010] The crossbeam and the column together enclose a limited space for placing the round billets to be transported; and the supporting surface of the column is an arc surface, which forms a surface contact with the round billets to disperse the impact force of the round billets on the column.

[0011] Furthermore, the beams and columns are both made of steel plates, and the two are welded.

[0012] Furthermore, the beams and columns are integrally cut and formed from steel plates.

[0013] Furthermore, the height of the limiting space is greater than the radius of the round billet to be transported.

[0014] Furthermore, the height of the limiting space is 330-600 mm.

[0015] Furthermore, the length of the confined space is 2.1-2.55m.

[0016] The utility model provides a shelf assembly, which comprises two connecting beams arranged opposite to each other. A plurality of arc-shaped protective devices are arranged in parallel between the two connecting beams along the length direction of the two connecting beams.

[0017] Furthermore, the base of the column is provided with an assembly hole for the connecting beam to pass through.

[0018] Furthermore, the area enclosed between the connecting beam and two adjacent protective devices is filled with a heat insulation layer, and the top of the heat insulation layer does not exceed the bottom of the limiting space.

[0019] Furthermore, the connecting beam is any one of H-shaped steel, channel steel, square steel or steel pipe.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] (1) The utility model is an arc-shaped protective device, in which the support surface of the column is an arc surface that matches the round blank, so that a surface contact is formed between the support surface and the round blank. Compared with the line contact between the traditional column and the round blank, the impact force surface of the column can be effectively increased, so that the impact force can be relatively evenly distributed on the entire contact surface, and not concentrated on one line, thereby effectively reducing the fatigue damage of the column. At the same time, through the setting of the arc-shaped support surface, the leverage and torque effect generated by the horizontal component force received by the column in actual operation will be greatly attenuated, which can further extend the service life of the column. In addition, in the utility model, the column is set at the end of the crossbeam, which can reduce the damage to the car body.

[0023] (2) The utility model provides an arc-shaped protective device, wherein the crossbeam and the vertical column are cut and formed as a whole from a whole piece of steel plate, which greatly improves the overall strength of the protective device and further reduces the risk of fracture at the connection between the crossbeam and the vertical column due to frequent stress.

[0024] (3) The arc-shaped protective device of the present invention optimizes the length of the limiting space, and while being suitable for the transportation needs of round billets of conventional specifications, it reduces the gap between the round billets after loading as much as possible, thereby effectively preventing the impact on the columns caused by the frequent rolling of the round billets when the gap is too large; at the same time, by optimizing the height of the limiting space, while meeting the effective protection of round billets of different diameters, it also effectively avoids interference with the lifting disk.

[0025] (4) The utility model utilizes the characteristics of the arc column support surface having a small head and a large root, so that when the arc column support surface is subjected to the lever effect of the horizontal component force, it is equivalent to having reinforcement ribs, and the anti-torque effect is significantly increased. At the same time, comprehensive force analysis shows that in actual operation, the lever effect of the horizontal component force on the arc column and the resulting torque effect are greatly attenuated.

[0026] (5) A shelf assembly of the present invention utilizes connecting beams to connect multiple protective devices into a whole, which can effectively improve the impact resistance of the protective devices; at the same time, through-penetration welding is used between the connecting beams and the protective devices, which can further ensure the strength of the entire shelf assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural diagram of an arc-shaped protective device of the present invention;

[0028] Figure 2 This is a front view of an arc-shaped protective device of the present invention;

[0029] Figure 3 This is a structural schematic diagram of a shelf assembly of the present utility model.

[0030] In the figure: 1, beam; 2, column; 21, supporting surface; 3, connecting beam. DETAILED DESCRIPTION

[0031] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] The present invention will be further described below in conjunction with specific embodiments.

[0034] refer to Figure 1 、 Figure 2 As shown, this embodiment of an arc-shaped protective device includes a crossbeam 1 and columns 2. Two columns 2 are provided, one at each end of the crossbeam 1. The crossbeam 1 and the two columns 2 together form a confined space for placing steel billets to be transported. Furthermore, to facilitate the transportation of round billets, the support surface 21 of the columns 2 is designed as a curved surface. This creates surface contact with the billets, effectively dissipating the impact force of the billets on the columns 2 and extending the service life of the columns 2.

[0035] Specifically, both the crossbeam 1 and the columns 2 are constructed of steel plates, which can be welded together. Compared to traditional billet columns, steel plate columns offer superior mechanical properties and significantly improved impact resistance. Furthermore, their lighter weight helps reduce the overall weight of the protective system and increase the vehicle's actual load capacity.

[0036] The arc-shaped protective device of this embodiment avoids collateral damage to the car body by welding the column 2 to the end of the crossbeam 1 rather than directly to the weaker side beams of the car body. However, due to the limited welding area between the column 2 and the crossbeam 1 and the relatively concentrated stress, the connection strength needs to be further strengthened. Therefore, in this embodiment, the protective device is integrally formed, that is, the crossbeam 1 and the column 2 are integrally cut and formed from a single piece of steel plate. This improves the overall strength of the protective device and further reduces the risk of fracture at the connection between the crossbeam 1 and the column 2 due to frequent stress.

[0037] As a preferred embodiment of the arc-shaped protective device of this embodiment, the height of the protective device's restraining space should be greater than the radius of the round billet to be transported, ensuring effective positioning of the round billet and preventing it from falling. Furthermore, to prevent interference with the hoisting disk during the hoisting process, the height of the restraining space can be less than the diameter of the round billet to be transported.

[0038] In this embodiment, the specific dimensions of the confined space are further optimized based on the dimensions of conventionally transported round billets, which primarily include 380mm, 450mm, and 600mm round billets. Preferably, the height of the confined space is controlled within a range of 330-600mm, for example, 400mm or 500mm.

[0039] At the same time, the length of the confined space is controlled within the range of 2.1-2.55m. First, this length range is shorter than the carriage width, complying with relevant national regulations. Second, while meeting the loading requirements for the three sizes of round billets mentioned above, the gaps between the loaded round billets are minimized. In this embodiment, by optimizing the length of the confined space, it effectively prevents significant lateral movement of the round billets when the gap is too large, potentially causing impact damage to the column 2.

[0040] Specifically, in this embodiment, the confined space has a height of 350mm and a length of 2.45m. This height is designed to be slightly lower than the minimum billet diameter (380mm) and higher than the radius of a 600mm billet (300mm). This effectively protects the three sizes of billets mentioned above while also effectively preventing interference with the lifting disk. Furthermore, this length is just enough to accommodate four 600mm billets. When loading five 450mm billets or six 380mm billets, while there is some lateral clearance, it is relatively small.

[0041] In this embodiment, an arc-shaped protective device is designed in which the support surface 21 of the column 2 is designed to be an arc surface that matches the round blank, so that a surface contact is formed between the support surface 21 and the round blank. Compared with the traditional line contact between the column 2 and the round blank, the impact force surface of the column 2 can be effectively increased, so that the impact force can be relatively evenly distributed over the entire contact surface and not concentrated on a single line, thereby effectively reducing the fatigue damage of the column. At the same time, by providing the arc-shaped support surface 21, the leverage and torque effects generated by the horizontal component force to which the column 2 is subjected during actual operation will be greatly attenuated, which can further extend the service life of the column. In addition, the column 2 is provided at the end of the crossbeam 1, rather than being directly welded to the side beam of the carriage, thereby avoiding collateral damage to the carriage body.

[0042] like Figure 3As shown, this embodiment also provides a rack assembly, which includes connecting beams 3 and the aforementioned protective devices. Two connecting beams 3 are provided opposite each other, and a plurality of protective devices are provided parallel to each other along the length of the two connecting beams 3, with the ends of each protective device being provided on the corresponding connecting beam 3.

[0043] Preferably, mounting holes are provided at the base of the columns 2 for the connecting beams 3 to pass through, allowing the multiple protective devices to be connected as a whole, further enhancing their impact resistance. Furthermore, penetration welding can be performed through the mounting holes between the columns 2 and the connecting beams 3 to ensure the strength of the entire rack assembly. The connecting beams 3 can be made of H-shaped steel, square steel, round steel, or other materials.

[0044] In addition, to meet the transportation requirements of high-temperature steel billets, a thermal insulation layer is filled in the area enclosed between the connecting beam 3 and the two adjacent protective devices, and the top of the thermal insulation layer does not exceed the bottom of the confined space. The thermal insulation layer can be made of existing thermal insulation materials, which are not listed here.

[0045] This embodiment of the rack assembly utilizes the small head and large base of the arc column support surface 21. This creates a stiffening effect when the arc column support surface 21 is subjected to the lever effect of the horizontal component force, significantly enhancing the moment resistance. Furthermore, comprehensive force analysis shows that in actual operation, the lever effect of the horizontal component force on the arc column, and the resulting moment effect, is significantly reduced.

[0046] It should also be noted that while the protective device and rack assembly of this embodiment are particularly effective for transporting round billets, they can also be used with billets or other billets. While billets are less likely to collide laterally during transport, during loading, to maximize utilization of the limited space, the billets are lowered as close as possible to the inside of the columns 2. At this point, the billets, while being hoisted, will inevitably come into contact with and collide with the columns 2. Therefore, the protective device for billets must also possess sufficient strength.

[0047] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the inventive purpose of the present invention, designs a structure and embodiment similar to the technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. An arc-shaped protective device, characterized in that: It comprises a crossbeam (1) and columns (2) arranged at both ends of the crossbeam (1); wherein, The crossbeam (1) and the column (2) together enclose a limited space for placing the round billets to be transported; and the supporting surface (21) of the column (2) is an arc surface, and the supporting surface (21) forms a surface contact with the round billets to disperse the impact force of the round billets on the column (2).

2. The arc-shaped protection device according to claim 1, characterized in that: The crossbeam (1) and the column (2) are both made of steel plates, and the two are welded.

3. The arc-shaped protection device according to claim 1, characterized in that: The crossbeam (1) and the column (2) are integrally cut and formed from steel plates.

4. An arc protection device according to any one of claims 1 to 3, characterized in that: The height of the limiting space is greater than the radius of the round billet to be transported.

5. The arc-shaped protection device according to claim 4, characterized in that: The height of the limiting space is 330-600 mm.

6. The arc-shaped protection device according to claim 5, characterized in that: The length of the confined space is 2.1-2.55m.

7. A shelf assembly, characterized in that: The invention comprises two connecting beams (3) arranged opposite to each other, and a plurality of arc-shaped protective devices according to any one of claims 1 to 6 are arranged in parallel between the two connecting beams (3) along the length direction thereof.

8. The shelf assembly according to claim 7, characterized in that: The base of the upright column (2) is provided with an assembly hole for the connecting beam (3) to pass through.

9. The shelf assembly according to claim 8, characterized in that: The area enclosed between the connecting beam (3) and two adjacent protective devices is filled with a heat insulation layer, and the top of the heat insulation layer does not exceed the bottom of the limiting space.

10. The shelf assembly according to claim 9, characterized in that: The connecting beam (3) is any one of H-shaped steel, channel steel, square steel or steel pipe.

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