Underframe of container and container

By using low thermal conductivity support components and connecting components in the refrigerated container chassis for plug-in connection, the problems of heat leakage and low welding efficiency of PE support blocks are solved, achieving better thermal insulation performance and efficient production.

CN223765190UActive Publication Date: 2026-01-06QINGDAO CIMC REEFER CONTAINER MFG +3
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Patent Information

Application Number
CN202520120901.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-17
Publication Date
2026-01-06
Estimated Expiration
2035-01-17

AI Technical Summary

Technical Problem

The existing PE support blocks of refrigerated container chassis have high thermal conductivity, which leads to heat leakage and affects the insulation performance. At the same time, the welding and fixing efficiency is low.

Method used

Supporting and connecting components made of materials with lower thermal conductivity than PE are connected by plug-in joints to reduce heat loss and simplify the installation process.

Benefits of technology

It improves the insulation performance and production efficiency of refrigerated containers, reduces heat transfer and contact area, and increases support strength.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an underframe of a container and the container. The underframe of the container comprises a transverse structural member, a floor, a connecting member and a supporting member. The floor is arranged above the transverse structural part in the height direction of the container. The connecting component is connected to the bottom face of the floor in the height direction, and an inserting groove is formed in the bottom of the connecting component. The bottom of the supporting component is connected to the transverse structural component, the top of the supporting component forms an inserting part, the inserting part is inserted into the inserting groove in a matched mode in the direction perpendicular to the height direction, so that the supporting component is connected to the connecting component, and the thermal conductivity of the material of the supporting component is lower than that of the PE material. According to the bottom frame of the container, the heat preservation performance is good, installation is convenient, and the production efficiency of the container is improved.
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Description

Technical Field

[0001] This utility model relates generally to the technical field of containers, and more specifically to a container frame and a container. Background Technology

[0002] Currently, the load on the underframe of refrigerated containers is typically transferred to the main load-bearing components such as the main crossbeams and bottom crossbeams via PE (Polyethylene) support blocks. Since the thermal conductivity of PE support blocks is much higher than that of the polyurethane foam in the refrigerated container underframe, the location of the PE support blocks becomes a major hotspot in the underframe area, affecting the insulation performance of the refrigerated container.

[0003] Meanwhile, the PE support blocks are fixed by welding angle steel to the main crossbeam and bottom crossbeam and then using self-tapping screws, which results in relatively low container production efficiency. Utility Model Content

[0004] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, the first aspect of this utility model provides a container frame, the container frame comprising:

[0006] Horizontal structural components;

[0007] The floor, along the height direction of the container, is laid above the transverse structural member;

[0008] A connecting member, which is connected to the bottom surface of the floor along the height direction, and the bottom of the connecting member is provided with a insertion groove; and

[0009] A support member, the bottom of which is connected to the transverse structural member, and the top of which is configured to form a plug-in portion, which is inserted into the plug-in groove in a direction perpendicular to the height direction, so that the support member is connected to the connecting member, and the thermal conductivity of the material of the support member is lower than that of the PE material.

[0010] According to the first aspect of this utility model, the support components of the container's underframe are made of a material with a lower thermal conductivity than PE material, thereby reducing heat loss at the support components. The support components and connecting components are connected by a plug-in part and a plug-in groove, which reduces the contact area between the support components and the underframe insulation material, and has a blocking effect on heat propagation along the height direction, thus improving the insulation performance of the underframe. In addition, the support components and connecting components are connected by a plug-in method, which facilitates installation and improves the production efficiency of the container.

[0011] Optionally, the connecting member includes a connecting portion, a first vertical portion, and a receiving portion. The connecting portion is connected to the floor, and the first vertical portion is connected to the connecting portion and the receiving portion respectively. The receiving portion is configured to form the insertion groove.

[0012] The supporting member further includes a second vertical part and a supporting part, the supporting part being connected to the horizontal structural member, and the second vertical part being connected to the supporting part and the plug-in part respectively.

[0013] Optionally, the connecting portion protrudes beyond the first vertical portion along the length of the container; and / or

[0014] The support portion protrudes from the second vertical portion along the length of the container.

[0015] Optionally, the top surface of the insertion portion is planar and perpendicular to the height direction, and the insertion groove has an inner top surface, which is planar and perpendicular to the height direction.

[0016] Optionally, the cross-section of the plug-in portion perpendicular to the width direction of the container is rectangular, and one side of the plug-in portion protrudes from the side wall of the second vertical portion along the length direction of the container.

[0017] Optionally, the cross-section of the plug-in portion perpendicular to the width direction of the container is rectangular, and the two sides of the plug-in portion protrude from the side walls of the second vertical portion along the length direction of the container.

[0018] Optionally, the dimension of the insertion portion along the length direction is larger than the dimension of the support portion along the length direction.

[0019] Optionally, the cross-section of the insertion slot perpendicular to the width direction of the container is arc-shaped, and the cross-section of the insertion part perpendicular to the width direction is circular; the receiving part is provided with a connecting groove, the connecting groove is connected to the insertion slot, the second vertical part extends to the insertion part through the connecting groove, and the inner walls of the two sides of the connecting groove respectively abut against the two side walls of the second vertical part.

[0020] Optionally, the floor and the transverse structural member are configured to form an insulation cavity for accommodating insulation material, and the supporting member and the connecting member are both arranged between the insulation material.

[0021] A second aspect of this utility model provides a container, including the base frame of the container as described above.

[0022] The container according to the second aspect of this utility model has good thermal insulation performance and high production efficiency. Attached Figure Description

[0023] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0024] Figure 1 This is a schematic diagram of the cross-section of the container's underframe along its length, according to the first preferred embodiment of this utility model.

[0025] Figure 2 for Figure 1 A schematic diagram showing the locations of the supporting and connecting components;

[0026] Figure 3 for Figure 2 Installation diagram of the supporting and connecting components;

[0027] Figure 4 This is a schematic diagram showing the location of the supporting member and connecting member in the second preferred embodiment of the present invention;

[0028] Figure 5 for Figure 4 Installation diagram of the supporting and connecting components;

[0029] Figure 6 This is a schematic diagram showing the location of the supporting member and connecting member in the third preferred embodiment of the present invention; and

[0030] Figure 7 for Figure 6 The installation diagram of the supporting and connecting components is shown.

[0031] Explanation of reference numerals in the attached figures

[0032] 100: Base frame; 101: Corner brackets

[0033] 110: Transverse structural component; 111: End beam

[0034] 112: Bottom crossbeam; 113: Main crossbeam

[0035] 114: Bottom panel; 120: Flooring

[0036] 130: Insulation cavity; 140: Connecting component

[0037] 141: Connecting part; 142: First vertical part

[0038] 143: Receiving section; 144: Insertion slot

[0039] 150: Supporting component; 151: Connecting part

[0040] 152: Second vertical section; 153: Support section

[0041] 145: Connecting groove; 160: Insulation material

[0042] D1: Height direction; D2: Length direction Detailed Implementation

[0043] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.

[0044] In this document, ordinal numbers such as "first" and "second" used in this invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" does not imply the existence of "second component," and the term "second component" does not imply the existence of "first component."

[0045] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0046] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0047] Unless otherwise stated, the numerical ranges in this document include not only the entire range within its two endpoints, but also the subranges contained therein.

[0048] Figures 1 to 7This invention illustrates a container base frame 100, which includes a transverse structural member 110, a floor 120, a connecting member 140, and a supporting member 150. The floor 120 is positioned above the transverse structural member 110 along the height direction D1 of the container. The connecting member 140 is connected to the bottom surface of the floor 120 along the height direction D1, and a slot 144 is provided at the bottom of the connecting member 140.

[0049] The bottom of the support member 150 is connected to the transverse structural member 110, and the top of the support member 150 is configured to form a plug-in portion 151. The plug-in portion 151 is plugged into the plug-in groove 144 in a direction perpendicular to the height direction D1, so that the support member 150 is connected to the connecting member 140. The thermal conductivity of the material of the support member 150 is lower than that of the PE material.

[0050] According to the present invention, the support member 150 of the container base 100 is made of a material with a lower thermal conductivity than PE material, thereby reducing heat loss at the support member 150. The support member 150 and the connecting member 140 are connected by a plug-in part 151 and a plug-in groove 144, reducing the contact area between the support member 150 and the insulation material 160 of the base 100. This effectively blocks heat propagation along the height direction D1, improving the insulation performance of the base 100. Furthermore, the plug-in connection between the support member 150 and the connecting member 140 facilitates installation and improves container production efficiency.

[0051] Reference Figure 1 The floor 120 and the transverse structural members 110 are configured to form an insulation cavity 130 for accommodating the insulation material 160. The insulation cavity 130 provides space for the insulation material 160, thereby improving the insulation performance of the base frame 100. Combined with... Figure 2 , Figure 4 and Figure 6 In several implementation methods, the supporting member 150 and the connecting member 140 are evenly distributed between the insulation material 160, so that the insulation material 160 is separated in the lateral direction, which has a blocking effect on the transfer of heat in the lateral direction within the base frame 100, and can improve the insulation performance of the base frame 100.

[0052] Optionally, the insulation material 160 can be polyurethane (PU) foam material, or other insulation materials 160.

[0053] Optionally, the support member 150 can be made of PVC (Polyvinyl chloride) foam or PU material. The connecting member 140 can be made of aluminum.

[0054] Combination Figure 1As shown, the transverse structural member 110 includes a bottom crossbeam 112, end crossbeams 111, and a bottom panel 114. Both the end crossbeams 111 and the bottom crossbeams 112 extend along the width direction of the container. The end crossbeams 111 are located at both ends of the underframe 100, which also includes bottom corner pieces 101. The ends of the end crossbeams 111 are connected to the bottom corner pieces 101. The bottom crossbeams 112 are arranged between the end crossbeams 111. The bottom crossbeams 112 are spaced apart along the length direction D2 of the container. The bottom panel 114 is located between adjacent bottom crossbeams 112 or between the bottom crossbeams 112 and the end crossbeams 111, thus the transverse structural member 110 constitutes the bottom structure of the insulation cavity 130. The support member 150 is preferably connected to the bottom crossbeams 112, providing high support strength.

[0055] Optionally, the transverse structural member 110 may also include a main crossbeam 113, which is a square crossbeam with high structural strength. The supporting member 150 is preferably connected to the main crossbeam 113, making the structure more stable.

[0056] The following describes the container base 100 of this utility model in conjunction with several embodiments.

[0057] First Implementation Method

[0058] Reference Figures 1 to 3 Along the height direction D1 of the container from top to bottom, the connecting member 140 includes a connecting portion 141, a first vertical portion 142, and a receiving portion 143. The connecting portion 141 is connected to the floor 120, and the first vertical portion 142 is connected to both the connecting portion 141 and the receiving portion 143. The receiving portion 143 is configured to form an insertion groove 144. The supporting member 150 also includes a second vertical portion 152 and a supporting portion 153. The supporting portion 153 is connected to the transverse structural member 110, and the second vertical portion 152 is connected to both the supporting portion 153 and the insertion portion 151. The connecting member 140 and the supporting member 150 have simple structures, high support strength, and low manufacturing costs.

[0059] Optionally, the bottom of the receiving part 143 is provided with a connecting groove 145, which communicates with the insertion groove 144. The connecting groove 145 is used to pass through the second vertical part 152, and the inner walls on both sides of the connecting groove 145 are respectively used to abut against the side walls on both sides of the second vertical part 152, thereby making the connection between the connecting member 140 and the supporting member 150 more stable.

[0060] Optionally, the connecting part 141 protrudes from the first vertical part 142 along the length direction D2 of the container, thereby providing sufficient connection area and high connection strength between the connecting part 141 and the floor 120.

[0061] Optionally, the support portion 153 protrudes from the second vertical portion 152 along the length direction D2 of the container, thereby providing sufficient connection area and high connection strength between the support portion 153 and the transverse structural member 110.

[0062] Optionally, refer to Figure 3 The top surface of the insertion part 151 is planar and perpendicular to the height direction D1, and the insertion groove 144 has an inner top surface, which is also planar and perpendicular to the height direction D1. Therefore, the insertion part 151 and the receiving part 143 bear the load through a plane perpendicular to the height direction D1, which helps to distribute the load and provides high support strength.

[0063] Preferably, refer to Figure 3 The cross-section of the plug-in part 151 perpendicular to the width direction of the container is rectangular, and the two sides of the plug-in part 151 protrude from the side walls of the second vertical part 152 along the length direction D2 of the container, so that the two sides of the support member 150 support the two sides of the connecting member 140, and the support balance is better.

[0064] Furthermore, refer to Figure 3 The dimension of the insertion part 151 along the length direction D2 is larger than the dimension of the support part 153 along the length direction D2, so that the dimension of the connection position of the support member 150 and the connecting member 140 along the length direction D2 of the container is sufficient, and the connection strength is higher.

[0065] Reference Figure 3 Overall, the supporting component 150 is I-shaped, and the external structure of the connecting component 140 is also I-shaped, resulting in a stable structure that is easy to process and has low manufacturing costs.

[0066] Second Implementation Method

[0067] Reference Figure 4 and Figure 5 Along the height direction D1 of the container from top to bottom, the connecting member 140 includes a connecting portion 141, a first vertical portion 142, and a receiving portion 143. The connecting portion 141 is connected to the floor 120, and the first vertical portion 142 is connected to both the connecting portion 141 and the receiving portion 143. The receiving portion 143 is configured to form an insertion groove 144. The supporting member 150 also includes a second vertical portion 152 and a supporting portion 153. The supporting portion 153 is connected to the transverse structural member 110, and the second vertical portion 152 is connected to both the supporting portion 153 and the insertion portion 151. The connecting member 140 and the supporting member 150 have simple structures, high support strength, and low manufacturing costs.

[0068] Optionally, the bottom of the receiving part 143 is provided with a connecting groove 145, which communicates with the insertion groove 144. The connecting groove 145 is used to pass through the second vertical part 152, and the inner walls on both sides of the connecting groove 145 are respectively used to abut against the side walls on both sides of the second vertical part 152, thereby making the connection between the connecting member 140 and the supporting member 150 more stable.

[0069] Optionally, the connecting part 141 protrudes from the first vertical part 142 along the length direction D2 of the container, thereby providing sufficient connection area and high connection strength between the connecting part 141 and the floor 120.

[0070] Optionally, the support portion 153 protrudes from the second vertical portion 152 along the length direction D2 of the container, thereby providing sufficient connection area and high connection strength between the support portion 153 and the transverse structural member 110.

[0071] Optionally, refer to Figure 5 The top surface of the insertion part 151 is planar and perpendicular to the height direction D1, and the insertion groove 144 has an inner top surface, which is also planar and perpendicular to the height direction D1. Therefore, the insertion part 151 and the receiving part 143 bear the load through a plane perpendicular to the height direction D1, which helps to distribute the load and provides high support strength.

[0072] Preferably, refer to Figure 5 The cross-section of the insertion part 151 perpendicular to the width direction of the container is rectangular, and one side of the insertion part 151 (e.g.) Figure 5 The right side of the container (D2) protrudes from the side wall of the second vertical part 152 along the length direction of the container. Compared with the plug-in part 151 of the first embodiment, it has lower material cost and reduces the contact area between the support member 150 and the connecting member 140, resulting in better thermal insulation performance.

[0073] Reference Figure 5 Overall, the insertion part 151 and the second vertical part 152 are L-shaped, and the outer part of the first vertical part 142 and the receiving part 143 are also L-shaped. The structure is stable, easy to process, and has low manufacturing cost.

[0074] Third Implementation Method

[0075] Reference Figure 6 and Figure 7Along the height direction D1 of the container from top to bottom, the connecting member 140 includes a connecting portion 141, a first vertical portion 142, and a receiving portion 143. The connecting portion 141 is connected to the floor 120, and the first vertical portion 142 is connected to both the connecting portion 141 and the receiving portion 143. The receiving portion 143 is configured to form an insertion groove 144. The supporting member 150 also includes a second vertical portion 152 and a supporting portion 153. The supporting portion 153 is connected to the transverse structural member 110, and the second vertical portion 152 is connected to both the supporting portion 153 and the insertion portion 151. The connecting member 140 and the supporting member 150 have simple structures, high support strength, and low manufacturing costs.

[0076] Furthermore, the cross-section of the insertion slot 144 perpendicular to the width direction of the container is arc-shaped, and the cross-section of the insertion part 151 perpendicular to the width direction is circular. This results in a smaller contact area between the support member 150 and the insulation material 160, improving the insulation performance of the base frame 100. The receiving part 143 is provided with a connecting slot 145, which communicates with the insertion slot 144. The second vertical part 152 extends to the insertion part 151 through the connecting slot 145, and the inner walls on both sides of the connecting slot 145 abut against the side walls on both sides of the second vertical part 152, thereby preventing lateral displacement between the connecting member 140 and the support member 150 and making it more stable.

[0077] This utility model also provides a container, including a base frame 100 according to the above-described container. The container according to this utility model has good thermal insulation performance and high production efficiency.

[0078] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0079] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A chassis for a container, characterized in that, The chassis of the container comprises: a transverse structural member; a floor disposed above the transverse structural member along a height direction of the container; a connecting member connected to a bottom surface of the floor along the height direction, a bottom portion of the connecting member being provided with a plug-in groove; and a support member, a top portion of the support member being configured to form a plug-in portion, the plug-in portion being plug-in fitted to the plug-in groove along a direction perpendicular to the height direction, so that the support member is connected to the connecting member, a thermal conductivity of a material of the support member being lower than a thermal conductivity of a PE material.

2. The chassis of the container according to claim 1, wherein the connecting member comprises a connecting portion connected to the floor, a first vertical portion connected to the connecting portion and a receiving portion respectively, and the receiving portion is configured to form the plug-in groove; the support member further comprises a second vertical portion and a support portion connected to the transverse structural member, the second vertical portion is connected to the support portion and the plug-in portion respectively.

3. A container chassis as claimed in claim 2, characterised in that, the connecting portion protrudes from the first vertical portion along a length direction of the container; and / or the support portion protrudes from the second vertical portion along the length direction of the container.

4. The container chassis of claim 2, wherein, a top surface of the plug-in portion is configured to be a plane and perpendicular to the height direction, and the plug-in groove has an inner top surface configured to be a plane and perpendicular to the height direction.

5. A container chassis as claimed in claim 4, wherein, a cross section of the plug-in portion perpendicular to a width direction of the container is rectangular, and a side edge of one side of the plug-in portion protrudes from a side wall of the second vertical portion along a length direction of the container.

6. The container chassis of claim 4, wherein, a cross section of the plug-in portion perpendicular to a width direction of the container is rectangular, and two side edges of the plug-in portion protrude from side walls of two sides of the second vertical portion along a length direction of the container respectively.

7. A container chassis as claimed in claim 6, characterised in that, a dimension of the plug-in portion along the length direction is greater than a dimension of the support portion along the length direction.

8. The container chassis of claim 2, wherein, a cross section of the plug-in groove perpendicular to a width direction of the container is a circular arc, and a cross section of the plug-in portion perpendicular to the width direction is circular; the receiving portion is provided with a communication groove in communication with the plug-in groove, the second vertical portion extends to the plug-in portion through the communication groove, and two inner walls of the communication groove abut to two side walls of the second vertical portion respectively.

9. A container's undercarriage according to any one of claims 1 to 8, characterized in that, the floor and the transverse structural member are configured to form a thermal insulation cavity for accommodating thermal insulation material, and the support member and the connecting member are both disposed between the thermal insulation material.

10. A container characterized by A container comprising the chassis according to any one of claims 1 to 9.