Side beam of folding box and folding box
By setting up a three-stage structure plate in the upper wing plate of the folding box side beam, the problem of increasing self-weight when increasing load capacity in the prior art is solved, and the balance between high load capacity and low self-weight is achieved, reducing material cost and transportation difficulty.
Patent Information
- Application Number
- CN202420716474.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-09
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-04-09
AI Technical Summary
When the existing folding box increases the load capacity, it will increase its own weight, thereby increasing the difficulty of transport.
By providing a three-stage structure in the upper wing of the side beam of the folding box, the first section in the middle is greater than the second section on both sides, and using a thicker first section and a thinner second section sheet, the overall strength of the side beam is enhanced while reducing material utilization to reduce self-weight.
On the premise of slightly increasing the self-weight of the folding box, the load capacity of the folding box is greatly improved, while reducing the material cost and self-weight, and reducing the difficulty of transportation.
Smart Images
Figure CN222698936U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of logistics and transportation, in particular to a side beam of a folding box and the folding box. Background Art
[0002] As a special container, a folding box can fold its end walls onto the bottom frame when the empty box is returned, so that multiple folding boxes can be stacked and placed, thereby reducing the space occupied when the empty box is returned. Side beams are usually set on both sides of the bottom frame of the folding box. The cross-section of the side beam is generally set in the shape of an "I", which includes a web, an upper wing plate located on the top of the web, and a lower wing plate located at the bottom of the web. The upper wing plate, the web and the lower wing plate are welded to form the side beam. Folding boxes are usually used to load some heavy equipment, metal materials, etc., and their bottom frame is required to have a large load-bearing capacity. If the load weight needs to be increased, it is generally achieved by increasing the thickness of the web, upper wing plate and lower wing plate of the side beam. However, increasing the thickness of the web, upper wing plate and lower wing plate will greatly increase the weight of the folding box itself, increasing the difficulty of transporting the folding box. Utility Model Content
[0003] In view of the deficiencies in the prior art, the first object of the present invention is to provide a side beam for a folding box, which can significantly improve the load-bearing capacity of the folding box while slightly increasing the deadweight of the folding box.
[0004] The second purpose of the utility model is to provide a folding box.
[0005] In order to achieve the above purpose one, the utility model adopts the following technical solution:
[0006] The side beam of the folding box includes a web plate, an upper wing plate welded to the top of the web plate, and a lower wing plate welded to the bottom of the web plate;
[0007] The upper wing plate includes a first section and two second sections, the first section is located in the middle of the length direction of the upper wing plate, the two second sections are respectively located on both sides of the first section, the two ends of the first section respectively form a first butt joint surface, the second section is close to one end of the first section to form a second butt joint surface, the second butt joint surfaces of the two second sections are respectively butt jointed with the first butt joint surfaces at the two ends of the first section and are welded and fixed;
[0008] The thickness of the first section is greater than that of the second section, and the upper surface of the first section is flush with the upper surface of the second section so that the lower edge of the first docking surface is offset downward by a distance a compared to the lower edge of the second docking surface, where a≥2mm.
[0009] A step portion is provided on the web, which includes a first horizontal surface welded to the lower surface of the first section, a second horizontal surface welded to the edge surface of the second section, and a connecting surface connected between the first horizontal surface and the second horizontal surface, and the connecting surface is welded to the first butt surface.
[0010] The angle between the connecting surface and the first horizontal plane is greater than 90°.
[0011] The length of the upper wing plate is L1, the length of the first section is L2, and L2 is between 0.23 times of L1 and 0.26 times of L1.
[0012] The lower wing plate includes a third section and two fourth sections. The third section is located in the middle of the length direction of the lower wing plate. The two fourth sections are welded to both ends of the third section respectively. The thickness of the third section is greater than that of the fourth section.
[0013] The lower surface of the third section is flush with the lower surface of the fourth section.
[0014] In order to achieve the above-mentioned second purpose, the utility model adopts the following technical solutions:
[0015] A folding box comprises the side beams of the folding box.
[0016] The beneficial effects of the utility model are:
[0017] In the utility model, the upper wing plate is arranged as a three-section structure, the thickness of the first section in the middle is greater than the thickness of the second sections on both sides, and the relatively thick first section can increase the overall strength of the side beam. In particular, the strength of the middle part of the side beam is significantly improved by utilizing the thicker first section, so as to overcome the defects of large load and easy deformation in the middle part of the side beam, thereby greatly improving the load-bearing capacity of the folding box. The second sections on both sides of the upper wing plate are composed of relatively thin plates. On the premise of meeting the strength requirements, the two relatively thin second sections reduce the dead weight of the folding box, reduce material utilization, and then reduce material costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model
[0019] Figure 2 for Figure 1 Magnified view at A in the middle;
[0020] Figure 3 for Figure 1 Schematic diagram of the structure of the middle web;
[0021] Figure 4 This is a schematic diagram of the structure of the second embodiment of the present utility model. DETAILED DESCRIPTION
[0022] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:
[0023] like Figure 1 , 2As shown, it is a side beam of a folding box of Example 1 of the utility model, which includes a web 20, an upper wing plate 10, and a lower wing plate 30, wherein the upper wing plate 10 is welded to the top of the web 20, and the lower wing plate 30 is welded to the bottom of the web 20, so that the side beam constitutes a structure with an "I"-shaped cross section, and the upper wing plate 10 is a three-section structure, which includes a first section 11 and two second sections 12, the first section 11 is located in the middle position in the length direction of the upper wing plate 10, and the two second sections 12 are respectively located on both sides of the first section 11, and the two ends of the first section 11 respectively form a first docking surface 111, and the second section 12 is close to one end of the first section 11 to form a second docking surface 121 facing the first docking surface 111, and the second docking surface 121 is docked to the first docking surface 111 and welded and fixed, so that the two second sections 12 are respectively connected to the two ends of the first section 11 to form the upper wing plate 10. The first section 11 and the second section 12 are both plate-shaped structures, wherein the thickness of the first section 11 is D1, and the thickness of the second section 12 is D2, D1 is greater than D2, and after the second section 12 is butt-welded to the first section 11, the upper surface of the first section 11 is flush with the upper surface of the second section 12, so that the top surface of the side beam forms a flat structure, and the lower surface of the first section 11 protrudes downward from the lower surface of the second section 12, so that the lower edge of the first butt surface 111 is offset downward by a distance a compared to the lower edge of the second butt surface 121, wherein a is greater than or equal to 2 mm. When assembling and welding the side beams, the first section 11 of the upper wing plate 10 can be processed from a plate with a thickness of 20 mm, and the second section 12 can be processed from a plate with a thickness of 16 mm. After the first section 11 and the second section 12 are welded and fixed together, the above-mentioned distance a is made to be 4 mm, that is, the lower edge of the first docking surface 111 is offset downward by 4 mm compared to the lower edge of the second docking surface 121, and the distance of 4 mm is greater than the general weld width. In this way, the step formed by the part of the first docking surface 111 protruding from the lower edge of the second docking surface 121 and the lower surface of the second section 12 can provide sufficient space to fill the weld, thereby ensuring that the first section 11 and the second section 12 have better welding strength.
[0024] In one of the above-mentioned embodiments, the upper wing panel 10 is set to a three-section structure, and the thickness of the first section 11 in the middle is greater than the thickness of the second sections 12 on both sides. The relatively thick first section 11 can increase the overall strength of the side beam. In particular, the thicker first section 11 is used to significantly improve the strength of the middle part of the side beam, so as to overcome the defects of large load and easy deformation in the middle position of the side beam, thereby greatly improving the load-bearing capacity of the folding box. The second sections 12 on both sides of the upper wing panel 10 are composed of relatively thin plates. On the premise of meeting the strength requirements, the two relatively thin second sections 12 reduce the dead weight of the folding box, reduce material utilization, and then reduce material costs.
[0025] The web 20 is provided with a step portion, which includes a first horizontal surface 201, a second horizontal surface 202, and a connecting surface 203. The first horizontal surface 201 is welded to the lower surface of the first section 11 of the upper wing 10, the second horizontal surface 202 is welded to the lower surface of the second section 12, the connecting surface 203 is connected between the first horizontal surface 201 and the second horizontal surface 202, and the connecting surface 203 is welded to the first butt surface 111, so that the top structure of the web 20 matches the structure of the connecting part of the first section 11 and the second section 12 of the upper wing 10, and the protruding part of the lower part of the first butt surface 111 increases the weld distance between the web 20 and the upper wing 10, thereby improving the welding strength of the web 20 and the upper wing 10. The angle between the connecting surface 203 and the first horizontal surface 201 is greater than 90°. That is, the connection surface 203 is set to an inclined state, so that an inclined weld is formed between the connection surface 203 and the first butt surface 111 , thereby increasing the welding area between the connection surface 203 and the first butt surface 111 .
[0026] The total length of the upper wing panel 10 is L1, and the length of the first section 11 of the upper wing panel 10 is L2, wherein L2 is between 0.23 times L1 and 0.26 times L1. For example, when the folding box is 20 feet, L2 is approximately 0.24 times L1.
[0027] like Figure 4 As shown, the side beam of the folding box of the second embodiment of the utility model, the lower wing plate 30 thereof adopts a three-section structure, specifically, the lower wing plate 30 includes a third section 31 and two fourth sections 32, the two fourth sections 32 are respectively located on both sides of the third section 31, the third section 31 and the two fourth sections 32 are both processed from plates, the two fourth sections 32 are respectively welded at both ends of the third section 31, and the thickness of the third section 31 is greater than the thickness of the two fourth sections 32. In a preferred embodiment, the lower surface of the third section 31 can be set flush with the lower surface of the fourth section 32, so that the upper surface of the third section 31 protrudes from the upper surface of the fourth section 32. In other embodiments, the upper surface of the third section 31 and the upper surface of the fourth section 32 may be set to be flush, so that the lower surface of the third section 31 protrudes from the lower surface of the fourth section 32. The other structures of the second embodiment are the same as those of the first embodiment. By setting the third section 31 in the middle of the lower wing panel 30 as a plate with a thicker thickness, the strength of the middle position of the lower wing panel 30 is increased, thereby further overcoming the defects of large load and easy deformation in the middle position of the side beam, and improving the load-bearing capacity of the folding box. In addition, thinner fourth sections 32 are used on both sides of the lower wing panel 30 to achieve the purpose of reducing weight.
[0028] The folding box of the utility model comprises the side beams of the folding box mentioned above, and other structures of the folding box are the same as those in the prior art, which will not be described in detail here.
[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. The side beam of the folding box is characterized in that: It includes a web, an upper wing plate welded to the top of the web, and a lower wing plate welded to the bottom of the web; The upper wing plate includes a first section and two second sections, the first section is located in the middle of the length direction of the upper wing plate, the two second sections are respectively located on both sides of the first section, the two ends of the first section respectively form a first butt joint surface, the second section is close to one end of the first section to form a second butt joint surface, the second butt joint surfaces of the two second sections are respectively butt jointed with the first butt joint surfaces at the two ends of the first section and are welded and fixed; The thickness of the first section is greater than that of the second section, and the upper surface of the first section is flush with the upper surface of the second section so that the lower edge of the first docking surface is offset downward by a distance a compared to the lower edge of the second docking surface, where a≥2mm.
2. The side beam of the folding box according to claim 1, characterized in that: A step portion is provided on the web, which includes a first horizontal surface welded to the lower surface of the first section, a second horizontal surface welded to the edge surface of the second section, and a connecting surface connected between the first horizontal surface and the second horizontal surface, and the connecting surface is welded to the first butt surface.
3. The side beam of the folding box according to claim 2, characterized in that: The angle between the connecting surface and the first horizontal plane is greater than 90°.
4. The side beam of the folding box according to claim 1, characterized in that: The length of the upper wing plate is L1, the length of the first section is L2, and L2 is between 0.23 times of L1 and 0.26 times of L1.
5. The side beam of the folding box according to claim 1, characterized in that: The lower wing plate includes a third section and two fourth sections. The third section is located in the middle of the length direction of the lower wing plate. The two fourth sections are welded to both ends of the third section respectively. The thickness of the third section is greater than that of the fourth section.
6. The side beam of the folding box according to claim 5, characterized in that: The lower surface of the third section is flush with the lower surface of the fourth section.
7. A folding box, characterized in that: A side beam comprising a folding box as claimed in any one of claims 1 to 6.