Refrigerated container chassis and refrigerated container
By setting the limit structure of the boss and slot on the bottom crossbeam of the refrigerated container base frame, the problem of PE block displacement in the foaming process is solved, and good support to the floor is achieved to ensure the normal use of the refrigerated container.
Patent Information
- Application Number
- CN202420643894.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-04-01
AI Technical Summary
In the foaming process of existing refrigerated container chassis, PE blocks are easily displaced due to extrusion pressure, resulting in the loss of local support on the floor, affecting the normal use of refrigerated containers.
A base frame of a refrigerated container is designed. By setting a limit structure of a boss and a slot on the bottom beam, the relative freedom of movement between the PE block and the bottom beam is defined to prevent the PE block from shifting.
It effectively prevents the PE block from displaced during foaming, ensures good support of the floor, prevents floor deformation, and ensures the normal use of refrigerated containers.
Smart Images
Figure CN222699201U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cold chain transportation, in particular to a chassis of a refrigerated container and the refrigerated container. Background Art
[0002] Refrigerated containers are important equipment in cold chain transportation. In order to prevent the cargo space of the refrigerated container from exchanging heat with the external environment, it is usually necessary to set an insulation layer on the box body. For example, the chassis of the refrigerated container generally includes a floor, a corrugated bottom plate, and a bottom cross beam. The bottom cross beam is located below the floor and is set at a certain distance from the floor. The corrugated bottom plate is connected to the bottom cross beam and is located below the floor. The corrugated bottom plate and the floor are set at a certain distance to form a sandwich structure therebetween, and then an insulation layer is formed therebetween through a foaming process. In order to support the floor, it is usually necessary to set a strip of PE blocks between the bottom cross beam and the floor. The PE block is connected to the bottom cross beam with an angle steel. During foaming, the foaming material expands inside the sandwich structure, which will exert a large extrusion force on the PE block, which can easily cause the PE block to shift, making the PE block's support for the floor ineffective. The floor lacking local support is easily deformed by the pressure applied by the goods inward, thereby affecting the normal use of the refrigerated container. Utility Model Content
[0003] In view of the deficiencies of the prior art, the first object of the utility model is to provide a chassis of a refrigerated container, which can prevent the PE block from shifting and provide better support for the floor.
[0004] The second purpose of the utility model is to provide a refrigerated container.
[0005] In order to achieve the above purpose one, the utility model adopts the following technical solution:
[0006] The chassis of the refrigerated container includes a floor, a plurality of bottom cross beams arranged along the length direction of the chassis, and a plurality of PE blocks;
[0007] A corrugated bottom plate is connected between two adjacent bottom cross beams. The bottom cross beams and the corrugated bottom plate are both located below the floor and together form a bottom member. A thermal insulation layer is filled between the bottom member and the floor.
[0008] A supporting plane is provided on the bottom cross beam, and a boss protruding upward from the supporting plane is fixed on the supporting plane. The top surface of the PE block supports the lower surface of the floor, and a slot is provided on the bottom surface of the PE block. The slot includes a top wall and two side walls extending downward from both sides of the top wall. The boss is embedded in the slot, and the top surface and two side surfaces of the boss are respectively abutted against the top wall and two side walls of the slot to limit the freedom of the PE block in the width direction of the bottom cross beam.
[0009] A limiting strip is fixed on both sides of the PE block on the lower surface of the floor, and the two side surfaces of the PE block are respectively attached to the two limiting strips.
[0010] The limiting strip includes a web abutting against the side of the PE block, an upper wing extending from the top of the web away from the PE block and welded to the lower surface of the floor, and a lower wing extending from the bottom of the web away from the PE block.
[0011] A horizontally extending connecting wall is arranged on the bottom cross beam, the upper surface of the connecting wall forms a supporting plane, and the edge of the corrugated bottom plate overlaps the lower surface of the connecting wall.
[0012] The bottom surface of the PE block is arranged at a certain distance from the supporting plane, and the edge of the corrugated bottom plate is provided with a horizontally extending first section and a second section extending upward from the side of the first section away from the bottom cross beam, and the first section is overlapped with the lower surface of the connecting wall; in the height direction, the distance between the second section and the bottom surface of the PE block is smaller than the distance between the first section and the bottom surface of the PE block.
[0013] The boss is a cross beam with a C-shaped cross section welded on the connecting wall. The C-shaped opening of the cross beam is arranged downward, and the cross beam continuously extends from one end of the bottom cross beam to the other end.
[0014] A plurality of bosses arranged along the length direction of the bottom cross beam are arranged on the connecting wall of the bottom cross beam.
[0015] In order to achieve the above-mentioned second purpose, the utility model adopts the following technical solutions:
[0016] A refrigerated container, characterized in that it comprises the above-mentioned underframe of the refrigerated container.
[0017] The beneficial effects of the utility model are:
[0018] When the base frame of the utility model forms the insulation layer through the foaming process, the limiting structure formed by the boss and the slot limits the freedom of relative movement between the PE block and the bottom cross beam, and the extrusion force formed by the expansion of the foaming material will not cause the PE block to shift, so that the PE block can form a better support between the bottom cross beam and the floor, preventing the floor from being deformed, and ensuring that the refrigerated container can be used normally. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;
[0020] Figure 2 for Figure 1 A-direction view;
[0021] Figure 3 It is a structural schematic diagram of another embodiment of the 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 , 2 As shown, a chassis of a refrigerated container of the present invention comprises a floor 10, a plurality of bottom cross beams 20 arranged along the length direction of the chassis, and a plurality of PE blocks 40. The bottom cross beams 20 extend along the width direction of the chassis, and a corrugated bottom plate 30 is connected between two adjacent bottom cross beams 20. The bottom cross beams 20 and the corrugated bottom plate 30 are both located below the floor 10, and both are arranged at a certain distance from the floor 10. The bottom cross beams 20 and the corrugated bottom plate 30 together form a bottom member, and a sandwich is formed between the bottom member and the floor 10, and an insulation layer 70 is filled inside the sandwich; a support plane 211 is provided on the bottom cross beam 20, and the support plane 212 is provided on the bottom cross beam 20. A boss 50 is fixedly connected to 11, and the boss 50 protrudes upward from the supporting plane 211. The PE block 40 is in a strip shape, and its top surface is supported on the lower surface of the floor 10. A slot 41 is arranged on the bottom surface of the PE block 40. The slot 41 includes a top wall and two side walls extending downward from both sides of the top wall. The boss 50 is embedded in the slot 41, and the top surface of the boss 50 is against the top wall of the slot 41, and the two side surfaces of the boss 50 are respectively against the two side walls of the slot 41. In this way, the boss 50 is used in conjunction with the slot 41 to limit the freedom of relative movement of the bottom beam 20 and the PE block 40 in the width direction of the bottom beam 20.
[0024] When the base frame of the utility model forms the insulation layer 70 through the foaming process, the limiting structure formed by the boss 50 and the slot 41 limits the freedom of relative movement between the PE block 40 and the bottom cross beam 20. The extrusion force formed by the expansion of the foaming material will not cause the PE block 40 to shift, so that the PE block 40 can form a better support between the bottom cross beam 20 and the floor 10, preventing the floor 20 from deformation, and ensuring that the refrigerated container can be used normally.
[0025] In a preferred embodiment, the lower surface of the floor 10 is located on both sides of the PE block 40 and is fixedly connected with a limit bar 60. The two side surfaces of the PE block 40 are respectively pressed against the two limit bars 60. The PE block 40 is clamped by the two limit bars 60 to limit the PE block 40, which further prevents the PE block 40 from shifting. The cross section of the limit bar 60 is C-shaped, and the opening of the C-shape is set away from the PE block 40. Specifically, the limit bar 60 includes a web 61, an upper wing plate 62, and a lower wing plate 63, wherein the web 61 is pressed against the side of the PE block 40, and the upper wing plate 62 extends from the top of the web 61 in a direction away from the PE block 40, so that the upper wing plate 62 can overlap the lower surface of the floor 10, so as to facilitate welding the upper wing plate 62 to the lower surface of the floor 10, and the lower wing plate 63 extends from the bottom of the web 61 to the lower surface of the floor 10. The lower wing plate 63 extends away from the PE block 40, and after the thermal insulation layer 70 is formed by the foaming process, the lower wing plate 63 can be embedded in the thermal insulation layer 70, so that the thermal insulation layer 70 is buckled by the lower wing plate 63 to prevent the thermal insulation layer 70 from being separated from the floor 10, so that the thermal insulation layer 70 can have a better thermal insulation effect.
[0026] A horizontally extending connecting wall 21 is disposed on the bottom cross beam 20 . The upper surface of the connecting wall 21 forms the above-mentioned supporting plane 211 . The edge of the corrugated bottom plate 30 overlaps the lower surface of the connecting wall 21 . The bottom surface of the PE block 40 is arranged at a certain distance from the supporting plane 211, and the edge of the corrugated bottom plate 30 is provided with a horizontally extending first section 31 and a second section 32 extending upward from the side of the first section 31 away from the bottom beam 20. The first section 31 is overlapped on the lower surface of the connecting wall 21. In the height direction, the distance between the second section 32 and the bottom surface of the PE block 40 is smaller than the distance between the first section 31 and the bottom surface of the PE block. In this way, on the bottom component, a groove is formed below the PE block by the end surface of the connecting wall 21, the upper surface of the first section 31, and the second section 32. After the thermal insulation layer 70 is formed by the foaming process, the thermal insulation layer 70 is embedded in the groove, and the groove cooperates with the PE block to pull the embedded part of the thermal insulation layer 70 to prevent the thermal insulation layer 70 from being separated from the bottom component. Further, the thermal insulation layer 70 can have a better thermal insulation effect.
[0027] The boss 50 is a cross beam with a C-shaped cross section welded to the connecting wall 21. The C-shaped opening of the cross beam is downwardly disposed, and both sides are respectively welded and fixed to the connecting wall 21. The cross beam extends from one end of the bottom cross beam 20 to the other end. In other words, the boss 50 extends continuously along the length direction of the bottom cross beam 20. Figure 3In another embodiment shown, a plurality of bosses arranged along the length direction of the bottom cross beam 20 are provided on the connecting wall 21 of the bottom cross beam 20, which can also be embedded in the slot 41 on the bottom surface of the PE block 40 to limit the relative displacement between the PE block 40 and the bottom cross beam 20, thereby preventing the PE block 40 from shifting during the foaming process.
[0028] The refrigerated container of the present invention comprises the chassis of the refrigerated container described above, and other structures of the refrigerated container are the same as those in the prior art, which are well known to those skilled in the art and 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 chassis of a refrigerated container is characterized by: It includes a floor, a plurality of bottom beams arranged along the length direction of the base frame, and a plurality of PE blocks; A corrugated bottom plate is connected between two adjacent bottom cross beams. The bottom cross beams and the corrugated bottom plate are both located below the floor and together form a bottom member. A thermal insulation layer is filled between the bottom member and the floor. A supporting plane is provided on the bottom cross beam, and a boss protruding upward from the supporting plane is fixed on the supporting plane. The top surface of the PE block supports the lower surface of the floor, and a slot is provided on the bottom surface of the PE block. The slot includes a top wall and two side walls extending downward from both sides of the top wall. The boss is embedded in the slot, and the top surface and two side surfaces of the boss are respectively abutted against the top wall and two side walls of the slot to limit the freedom of the PE block in the width direction of the bottom cross beam.
2. The chassis of the refrigerated container according to claim 1, characterized in that: A limiting strip is fixed on both sides of the PE block on the lower surface of the floor, and the two side surfaces of the PE block are respectively attached to the two limiting strips.
3. The chassis of the refrigerated container according to claim 2, characterized in that: The limiting strip includes a web abutting against the side of the PE block, an upper wing extending from the top of the web away from the PE block and welded to the lower surface of the floor, and a lower wing extending from the bottom of the web away from the PE block.
4. The chassis of the refrigerated container according to claim 1, characterized in that: A horizontally extending connecting wall is arranged on the bottom cross beam, the upper surface of the connecting wall forms a supporting plane, and the edge of the corrugated bottom plate overlaps the lower surface of the connecting wall.
5. The chassis of the refrigerated container according to claim 4, characterized in that: The bottom surface of the PE block is arranged at a certain distance from the supporting plane, and the edge of the corrugated bottom plate is provided with a horizontally extending first section and a second section extending upward from the side of the first section away from the bottom cross beam, and the first section is overlapped with the lower surface of the connecting wall; in the height direction, the distance between the second section and the bottom surface of the PE block is smaller than the distance between the first section and the bottom surface of the PE block.
6. The chassis of the refrigerated container according to claim 4, characterized in that: The boss is a cross beam with a C-shaped cross section welded on the connecting wall. The C-shaped opening of the cross beam is arranged downward, and the cross beam continuously extends from one end of the bottom cross beam to the other end.
7. The chassis of the refrigerated container according to claim 4, characterized in that: A plurality of bosses arranged along the length direction of the bottom cross beam are arranged on the connecting wall of the bottom cross beam.
8. A refrigerated container, characterized in that: A chassis of a refrigerated container comprising any one of claims 1-7.