A refrigerated vehicle container splicing structure

Abstract

The application provides a refrigeration truck container splicing structure, which comprises a first plate body and a second plate body, opposite ends of the first plate body are provided with clamping parts, the clamping parts are provided with fixed grooves, opposite ends of the second plate body are provided with clamping grooves for inserting the clamping parts, the inner side of the clamping grooves is provided with sealing pads, the first plate body and the second plate body are alternately arranged and spliced and connected through clamping assemblies, the clamping assemblies comprise fixed blocks arranged in the clamping grooves and adjusting parts connected with the fixed blocks, under the driving of the adjusting parts, the fixed blocks can selectively protrude or be accommodated in the clamping grooves, so that the clamping parts and the fixed grooves form reliable clamping or release the clamping. Through the above structure, stable connection between the plate bodies can be realized without relying on the melting and bonding of sealing materials, and reliable sealing can be formed through the sealing pads; when disassembly or maintenance is needed, the plate bodies can be quickly separated by only reversely adjusting the clamping assemblies, which is very convenient.

Description

Technical Field

[0001] This invention relates to the field of cargo box splicing technology, specifically to a refrigerated truck cargo box splicing structure. Background Technology

[0002] In existing refrigerated truck cargo box splicing structures, a common method is to splice adjacent panels through the cooperation of interlocking parts and interlocking grooves, and to set sealing gaskets or sealing components at the splicing points to reduce cold loss and the infiltration of outside air. For example, Chinese Patent Publication No. CN218316965U discloses a refrigerated truck cargo box splicing structure, which achieves connection through interlocking blocks and interlocking grooves between the vertical and horizontal panels. A sealing and flow-blocking component including an adhesive gasket, a sealing rubber pad, and an electric heating wire is set in the interlocking groove. The electric heating wire heats the sealing rubber pad to melt it and bond it to the interlocking block, thereby improving the sealing performance of the splicing points.

[0003] However, the sealing method of the above-mentioned existing splicing structure relies on the melting and bonding process of the sealing material. When the cargo box is maintained, repaired or the panels are replaced in the later stage, the disassembly operation will damage the already melted and bonded sealing structure, which will cause the sealing rubber gasket to tear, deform or deteriorate in performance. As a result, it is difficult to restore the original sealing effect after the splicing part is reassembled, thus affecting the overall heat preservation performance of the refrigerated truck cargo box. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a refrigerated truck cargo box splicing structure to solve the problem that existing refrigerated truck cargo box splicing structures rely on melting and bonding to achieve sealing, which can easily damage the splicing parts and sealing components during disassembly or repeated assembly, resulting in decreased sealing performance and difficulty in ensuring long-term reliable sealing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A refrigerated truck cargo box assembly structure includes:

[0007] The two first plates each have a snap-fit ​​part at their opposite ends, and the snap-fit ​​part has a fixing groove.

[0008] The two second plates each have a snap-fit ​​groove at their opposite ends for the snap-fit ​​part to snap into. A sealing gasket is provided on the inner side of the snap-fit ​​groove for abutting against the end of the snap-fit ​​part.

[0009] The two first plates and the two second plates are alternately arranged;

[0010] The snap-fit ​​assembly includes a fixing block that passes through the snap-fit ​​groove and corresponds to the fixing groove, and an adjusting member that is slidably disposed in the second plate body. The adjusting member is connected to the fixing block so that when the adjusting member slides in the second plate body, the fixing block protrudes or is housed in the snap-fit ​​groove so as to snap into the corresponding fixing groove, or separate from it.

[0011] Furthermore, the second plate body is provided with a mounting cavity, and the adjusting member includes a mounting bracket slidably disposed in the mounting cavity and a gear rotatably disposed in the mounting cavity. The mounting bracket is connected to the fixing block, and the mounting bracket is provided with a tooth groove that meshes with the gear.

[0012] Furthermore, a mounting rod is provided inside the mounting cavity, and the mounting bracket is slidably disposed on the mounting rod.

[0013] Furthermore, a worm gear is rotatably provided inside the mounting cavity, and the worm gear is coaxially arranged with the gear; a worm is passed through the second plate, and one end of the worm extends into the mounting cavity and meshes with the worm gear.

[0014] Furthermore, an adjusting nut is provided at the end of the worm gear.

[0015] Furthermore, a groove is formed on the side of the second plate corresponding to the adjusting nut, and the adjusting nut is recessed into the groove.

[0016] Furthermore, a guide block is provided in the fixing groove, and the fixing block abuts against the guide block so that when the fixing block slides along the first direction, the guide block slides along the second direction perpendicular to the first direction, so as to synchronously drive the snap-fit ​​part of the first plate to press against the sealing gasket.

[0017] Furthermore, the fixing block and the guide block abut against each other through mutually cooperating wedge-shaped surfaces.

[0018] Furthermore, a compression plate is slidably provided on the inner side of the snap-fit ​​groove, the sealing gasket is provided on the side of the compression plate facing the snap-fit ​​part, and an elastic element is provided between the inner side of the snap-fit ​​groove and the compression plate.

[0019] Furthermore, sealing grooves for installing sealing strips are provided on the end faces where the first plate and the second plate are spliced ​​together.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. By setting up a snap-fit ​​assembly, under the drive of the adjusting component, the fixing block can selectively protrude or retract in the snap-fit ​​groove, so that the snap-fit ​​part of the first plate can be reliably snapped into the snap-fit ​​groove of the second plate, realizing a stable connection between the plates. Reliable fixation can be obtained without relying on the melting and bonding of sealing materials. Moreover, when disassembly or maintenance is required, the fixing block can be disengaged from the fixing groove by reverse adjustment, which can complete the separation of the first plate and the second plate, which is very convenient.

[0022] 2. By setting a guide block in the fixing groove of the first plate and making the fixing block abut against the guide block, when the fixing block slides along the first direction to complete the snap-fit, the guide block moves along the second direction perpendicular to the first direction under the action of the wedge surface, thereby synchronously pushing the snap-fit ​​part of the first plate towards the inside of the snap-fit ​​groove, so that the sealing gasket in the snap-fit ​​groove is subjected to continuous compression, thereby maintaining a stable sealing compression force during the splicing process, thereby improving the sealing effect of the splicing part. Attached Figure Description

[0023] Appendix Figure 1 This embodiment presents a partial exploded structural diagram of the refrigerated truck cargo box assembly structure;

[0024] Appendix Figure 2 This is a front view schematic diagram of the refrigerated truck cargo box splicing structure in this embodiment;

[0025] Appendix Figure 3 This embodiment is a schematic diagram of the cross-sectional structure showing the connection state between the snap-fit ​​part and the snap-fit ​​groove in the refrigerated truck cargo box splicing structure.

[0026] Appendix Figure 4 This embodiment shows a schematic diagram of the adjusting components in the refrigerated truck cargo box assembly structure.

[0027] Appendix Figure 5 This is a schematic cross-sectional view of the snap-fit ​​joint in the refrigerated truck cargo box splicing structure of this embodiment.

[0028] Appendix Figure 6 Appendix Figure 2 A magnified schematic diagram of the local structure at point A;

[0029] Appendix Figure 7 : A schematic diagram of the first plate in the refrigerated truck cargo box splicing structure of this embodiment;

[0030] Appendix Figure 8 : A schematic diagram of the structure of the second plate in the refrigerated truck cargo box splicing structure of this embodiment;

[0031] Appendix Figure 9 This embodiment is a schematic diagram showing the connection of multiple adjusting components in the refrigerated truck cargo box splicing structure.

[0032] Explanation of icon numbers:

[0033] 10. First plate; 11. Snap-fit ​​part; 12. Fixing groove;

[0034] 20. Second plate; 21. Snap-fit ​​groove;

[0035] 30. Sealing gasket;

[0036] 40. Fixing block;

[0037] 50. Adjusting component; 51. Mounting bracket; 52. Gear; 53. Tooth groove; 54. Mounting rod; 55. Worm gear; 56. Worm; 57. Adjusting nut;

[0038] 60. Guide block; 70. Extrusion plate; 80. Elastic element; 90. Sealing groove.

[0039] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the technical solutions of this invention are further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0041] In the description of this invention, it should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the implementation conditions of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0042] like Figure 1-9As shown, this embodiment of the invention proposes a refrigerated truck cargo box splicing structure, including: two first plates 10, each with a snap-fit ​​portion 11 at both opposite ends, and the snap-fit ​​portion 11 having a fixing groove 12; two second plates 20, each with a snap-fit ​​groove 21 at both opposite ends for snap-fitting the snap-fit ​​portion 11, and a sealing gasket 30 provided on the inner side of the snap-fit ​​groove 21 for abutting against the end of the snap-fit ​​portion 11; wherein, the two first plates 10 and the two second plates 20 are alternately arranged; a snap-fit ​​assembly including a fixing block 40 passing through the snap-fit ​​groove 21 and corresponding to the fixing groove 12, and an adjusting member 50 slidably disposed within the second plate 20, the adjusting member 50 being connected to the fixing block 40 so that when the adjusting member 50 slides within the second plate 20, the fixing block 40 protrudes or is retracted into the snap-fit ​​groove 21 to snap into the corresponding fixing groove 12, or separate from it.

[0043] In this embodiment of the invention, during assembly, the adjacent first plate 10 and second plate 20 are first aligned with each other, so that the snap-fit ​​portion 11 at the end of the first plate 10 is inserted into the snap-fit ​​groove 21 at the corresponding end of the second plate 20. At this time, the snap-fit ​​portion 11 is positioned opposite to the sealing gasket 30 on the inner side of the snap-fit ​​groove 21. Subsequently, by operating the adjusting member 50 in the snap-fit ​​assembly, the adjusting member 50 is slid within the mounting cavity of the second plate 20, thereby causing the fixing block 40 to protrude into the snap-fit ​​groove 21.

[0044] When the fixing block 40 protrudes to the working position, it engages with the corresponding fixing groove 12, thereby stably limiting the engaging part 11 of the first plate 10 within the engaging groove 21 of the second plate 20, thus achieving a reliable splicing connection between adjacent plates. This method prevents the first plate 10 from loosening during transportation vibrations or use, improving the overall stability of the cargo box splicing structure. Simultaneously, because the engaging part 11 of the first plate 10 is confined within the engaging groove 21 by the fixing block 40, its end continuously abuts against the sealing gasket 30 provided inside the engaging groove 21, keeping the sealing gasket 30 under pressure. This forms a stable sealing structure at the splicing point, effectively reducing cold leakage at the seams of the refrigerated truck cargo box.

[0045] By splicing together two first plates 10 and two second plates 20, the main frame structure of the refrigerated truck cargo box can be formed, with open surfaces in two opposite directions. In practical applications, the open surfaces can be configured as closed structures or door structures according to usage requirements. For example, closed plates can be installed by bolting, or door components can be installed on one side to form a complete refrigerated truck cargo box structure.

[0046] It is understood that the above-mentioned closure method of the open surface or the door structure can be achieved using existing technology, and does not affect the technical effect of the splicing structure of the present invention in terms of plate connection stability and sealing performance.

[0047] When it is necessary to disassemble the cargo box or replace the panels, simply reverse the operation of the adjusting component 50 to retract the fixing block 40 back into the snap-fit ​​groove 21, thereby releasing the snap-fit ​​relationship between the fixing block 40 and the fixing groove 12, and realizing the quick separation of the first panel 10 and the second panel 20, which is very convenient.

[0048] like Figure 3-4 As shown, in this embodiment of the invention, the second plate 20 is provided with a mounting cavity. The adjusting member 50 includes a mounting bracket 51 slidably disposed in the mounting cavity and a gear 52 rotatably disposed in the mounting cavity. The mounting bracket 51 is connected to the fixing block 40, and the mounting bracket 51 has a toothed groove 53 that meshes with the gear 52. In specific use, when it is necessary to splice the first plate 10 and the second plate 20, by rotating the gear 52, the gear 52 meshes with the toothed groove 53 on the mounting bracket 51, thereby driving the mounting bracket 51 to slide in the mounting cavity. Since the mounting bracket 51 is connected to the fixing block 40, the sliding of the mounting bracket 51 will synchronously drive the fixing block 40 to move towards the inside or outside of the snap-fit ​​groove 21, so that the fixing block 40 selectively protrudes out of the snap-fit ​​groove 21 and snaps into the corresponding fixing groove 12, or retracts into the snap-fit ​​groove 21 to separate from the fixing groove 12, thereby realizing the assembly or disassembly between the first plate 10 and the second plate 20.

[0049] In one embodiment of the present invention, an assembly port is provided on one side of the mounting cavity. The assembly port is used to install the adjustment component 50 and is closed by a cover plate after installation. The cover plate can be fixed to the second plate by screws, riveting or welding to form a sealed mounting cavity structure.

[0050] like Figure 4As shown, in one embodiment of the invention, the mounting bracket 51 has an L-shaped structure and two brackets are provided. The two mounting brackets 51 are located on opposite sides of the gear 52 and are meshed with the same gear 52. The ends of the two mounting brackets 51 are respectively connected to the corresponding fixing blocks 40. In specific use, when the snap-fit ​​part 11 of the first plate 10 is inserted into the snap-fit ​​groove 21 of the second plate 20, since the gear 52 meshes with the tooth grooves 53 on the two mounting brackets 51 at the same time, by rotating the gear 52, the two fixing blocks 40 extend synchronously and snap into the snap-fit ​​part 11, thereby stably fixing the first plate 10 to the second plate 20. When disassembly is required, rotating the gear 52 in the opposite direction will cause the two fixing blocks 40 to retract synchronously, allowing the first plate 10 and the second plate 20 to separate quickly. By setting two mounting brackets 51 and corresponding fixing blocks 40, the snap-fit ​​force is distributed on both sides of the snap-fit ​​part 11, effectively improving the structural stability of the first plate 10 and the second plate 20 after splicing.

[0051] Furthermore, such as Figure 9 As shown, in one embodiment of the invention, multiple snap-fit ​​components can be configured along the length of the second plate 20, and the gears 52 in each snap-fit ​​component are interconnected. By driving any one of the gears 52 to rotate, the fixing blocks 40 in multiple snap-fit ​​components can be driven to move simultaneously, realizing multi-point simultaneous snap-fit ​​or release, thereby further improving the overall stability of the plate splicing, while simplifying the installation and disassembly operations and improving assembly efficiency.

[0052] like Figure 3 As shown, in one embodiment of the present invention, a mounting rod 54 is provided inside the mounting cavity, and the mounting bracket 51 is slidably disposed on the mounting rod 54. By guiding and limiting the sliding stroke of the mounting bracket 51 through the mounting rod 54, it is possible to ensure that the mounting bracket 51 slides stably in a predetermined direction under the drive of the gear 52, thus ensuring the stability of its sliding.

[0053] like Figure 4 As shown, in one embodiment of the present invention, a worm gear 55 is rotatably disposed within the mounting cavity, and the worm gear 55 is coaxially arranged with the gear 52; a worm 56 is threaded through the second plate 20, and one end of the worm 56 extends into the mounting cavity and meshes with the worm gear 55. By rotating the worm 56, the worm gear 55 and the coaxial gear 52 can be driven to rotate, thereby realizing the adjustment of the mounting bracket 51 and the fixing block 40. Since the worm 56 and the worm gear 55 have self-locking characteristics, after the snap-fit ​​adjustment is completed, even under vehicle vibration or external force, it is not easy to reverse rotation, which is conducive to maintaining the snap-fit ​​state and sealing and pressing effect for a long time, and further improving the reliability of the splicing structure.

[0054] Furthermore, an adjusting nut 57 is provided at the end of the worm gear 56, making it convenient to adjust the worm gear 56 with tools, thus saving effort. Simultaneously, a groove is formed on the side of the second plate 20 corresponding to the adjusting nut 57, and the adjusting nut 57 is recessed into the groove. By accommodating the adjusting nut 57 within the groove, it is possible to prevent the adjusting nut 57 from being exposed, thus preventing damage during transportation; on the other hand, it also keeps the outer surface of the second plate 20 flat, contributing to the overall aesthetics of the cargo box.

[0055] like Figure 3 and Figure 5 As shown, in one embodiment of the present invention, a guide block 60 is provided in the fixing groove 12. The fixing block 40 abuts against the guide block 60 so that when the fixing block 40 slides along the first direction, the guide block 60 slides along the second direction perpendicular to the first direction, thereby simultaneously driving the snap-fit ​​portion 11 of the first plate 10 to press against the sealing gasket 30. The guide block 60 and the first plate 10 are integrally connected. Specifically, while the fixing block 40 and the fixing groove 12 are snapped together, the displacement of the guide block 60 can simultaneously drive the snap-fit ​​portion 11 of the first plate 10 to move towards the inside of the snap-fit ​​groove 21, so that the snap-fit ​​portion 11 further presses against the sealing gasket 30 disposed in the snap-fit ​​groove 21, thereby actively applying sealing pressure while the snap-fit ​​is completed, improving the sealing reliability of the spliced ​​part.

[0056] Specifically, the fixing block 40 and the guide block 60 abut against each other through mutually cooperating wedge-shaped surfaces. When the fixing block 40 slides into the fixing groove 12 in the first direction, its wedge-shaped surface presses against the wedge-shaped surface of the guide block 60. During the continuous movement of the fixing block 40, the guide block 60 can only move in the second direction because the first plate 10 is limited by the snap-fit ​​groove 21. Therefore, under the pressure of the wedge-shaped surface of the fixing block 40, the fixing block 40 pushes the guide block 60 to move the snap-fit ​​part 11 toward the inside of the snap-fit ​​groove 21, thereby making the snap-fit ​​part 11 exert a stable and continuous pressing effect on the sealing gasket 30.

[0057] Furthermore, such as Figure 6As shown, in one embodiment of the present invention, a pressing plate 70 is slidably provided on the inner side of the snap-fit ​​groove 21, and a sealing gasket 30 is provided on the side of the pressing plate 70 facing the snap-fit ​​part 11. An elastic element 80 is provided between the inner side of the snap-fit ​​groove 21 and the pressing plate 70. In specific use, when the snap-fit ​​part 11 of the first plate 10 is inserted into the snap-fit ​​groove 21 of the second plate 20 and the snap-fit ​​is completed under the action of the snap-fit ​​assembly, the snap-fit ​​part 11 will apply a pressing force to the pressing plate 70, causing the pressing plate 70 to slide along the inner side of the snap-fit ​​groove 21 and simultaneously compress the elastic element 80; and in this process, the sealing gasket 30 is always pushed by the pressing plate 70 and tightly abuts against the end face of the snap-fit ​​part 11, thereby forming a continuous and stable sealing and pressing force in the spliced ​​state.

[0058] In the initial state where the snap-fit ​​part 11 is inserted into the snap-fit ​​groove 21, a reserved gap is provided between the splicing end faces of the first plate 10 and the second plate 20 to ensure that the snap-fit ​​part 11 can continue to move along the insertion direction during the movement of the snap-fit ​​assembly driving the fixing block 40, thereby completing the pressing action on the sealing gasket 30. Furthermore, the elastic force of the elastic member 80 is selected based on the structural weight of the first plate 10 and the second plate 20, so that before the snap-fit ​​part 11 is inserted into the snap-fit ​​groove 21 and the snap-fit ​​is completed, the elastic member 80 can support the pressing plate 70 to maintain its initial position, thereby preventing the snap-fit ​​part 11 from prematurely adhering to the inner end face of the snap-fit ​​groove 21 due to the weight of the first plate 10 or the second plate 20.

[0059] When the first plate 10 needs to be disassembled, after the locking assembly releases the locking part 11, the elastic member 80 pushes the pressing plate 70 to slide in the opposite direction under the action of elastic force, thereby generating a reverse pushing force on the locking part 11, which facilitates the removal of the first plate 10 and improves the convenience of its disassembly. The elastic member 80 can be a spring, and multiple springs are arranged at intervals along the length of the locking groove 21.

[0060] like Figure 7-8 As shown, in one embodiment of the present invention, sealing grooves 90 for installing sealing strips are provided on the end faces where the first plate 10 and the second plate 20 are spliced ​​together. By providing sealing strips on the splicing end faces and cooperating with the sealing gaskets 30 in the snap-fit ​​grooves 21, the joint between the first plate 10 and the second plate 20 can be further sealed, thereby improving the overall heat insulation performance and leak-proof capability of the refrigerated truck cargo box.

[0061] The implementation principle of this application embodiment is as follows:

[0062] During the splicing process, the snap-fit ​​part 11 of the first plate 10 is inserted into the snap-fit ​​groove 21 of the second plate 20. By operating the adjusting member 50, the fixing block 40 is driven to move into the snap-fit ​​groove 21, so that the fixing block 40 and the fixing groove 12 form a snap-fit ​​engagement, thereby stably confining the first plate 10 on the second plate 20 and realizing the connection between the plates. At the same time, during the movement, the fixing block 40, through its cooperation with the guide block 60, converts the sliding displacement along the first direction into a pressing displacement along the second direction, so that the snap-fit ​​part 11 of the first plate 10 actively moves towards the inside of the snap-fit ​​groove 21 and applies a pressing force to the sealing gasket 30 set in the snap-fit ​​groove 21, thereby achieving sealing and pressing while completing the snap-fit, ensuring the sealing reliability of the spliced ​​part. At the same time, by setting the extrusion plate 70 and the elastic member 80, the sealing gasket 30 always maintains an elastic pressing state in the spliced ​​state, thereby further improving the sealing stability of the spliced ​​part.

[0063] When the locking assembly is released from its limiting position on the locking part 11, the elastic member 80 pushes the pressing plate 70 under the action of the rebound force to form an auxiliary ejection effect on the first plate 10, so as to facilitate the disassembly of the first plate 10 and the second plate 20.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A refrigerated truck cargo box splicing structure, characterized in that, include: Two first plates (10) are provided with snap-fit ​​parts (11) at their opposite ends, and the snap-fit ​​parts (11) are provided with fixing grooves (12). Two second plates (20) are provided with snap-fit ​​grooves (21) at their opposite ends for snap-fitting of the snap-fit ​​part (11). A sealing gasket (30) is provided on the inner side of the snap-fit ​​groove (21) for abutting against the end of the snap-fit ​​part (11). Two first plates (10) and two second plates (20) are alternately arranged; The snap-fit ​​assembly includes a fixing block (40) that passes through the snap-fit ​​groove (21) and corresponds to the fixing groove (12) and an adjusting member (50) that slides within the second plate (20). The adjusting member (50) is connected to the fixing block (40) so that when the adjusting member (50) slides within the second plate (20), the fixing block (40) protrudes or is retracted within the snap-fit ​​groove (21) to snap into the corresponding fixing groove (12) or separate from it.

2. The refrigerated truck cargo box splicing structure according to claim 1, characterized in that, The second plate (20) is provided with a mounting cavity. The adjusting member (50) includes a mounting bracket (51) slidably disposed in the mounting cavity and a gear (52) rotatably disposed in the mounting cavity. The mounting bracket (51) is connected to the fixing block (40), and the mounting bracket (51) is provided with a tooth groove (53) that meshes with the gear (52).

3. The refrigerated truck cargo box splicing structure according to claim 2, characterized in that, The mounting cavity is provided with a mounting rod (54), and the mounting bracket (51) is slidably disposed on the mounting rod (54).

4. The refrigerated truck cargo box splicing structure according to claim 2, characterized in that, A worm gear (55) is also rotatably provided inside the mounting cavity. The worm gear (55) is coaxially arranged with the gear (52). A worm (56) is passed through the second plate (20). One end of the worm (56) extends into the mounting cavity and meshes with the worm gear (55).

5. The refrigerated truck cargo box splicing structure according to claim 4, characterized in that, The end of the worm (56) is provided with an adjusting nut (57).

6. The refrigerated truck cargo box splicing structure according to claim 5, characterized in that, The second plate (20) has a recessed groove on one side corresponding to the adjusting nut (57), and the adjusting nut (57) is recessed into the groove.

7. The refrigerated truck cargo box splicing structure according to claim 1 or 2, characterized in that, The fixing groove (12) is provided with a guide block (60), and the fixing block (40) abuts against the guide block (60) so that when the fixing block (40) slides along the first direction, the guide block (60) slides along the second direction perpendicular to the first direction, so as to synchronously drive the snap-fit ​​part (11) of the first plate (10) to press against the sealing gasket (30).

8. The refrigerated truck cargo box splicing structure according to claim 7, characterized in that, The fixing block (40) and the guide block (60) abut against each other through mutually cooperating wedge-shaped surfaces.

9. The refrigerated truck cargo box splicing structure according to claim 7 or 8, characterized in that, A pressing plate (70) is slidably provided on the inner side of the snap-fit ​​groove (21), and a sealing gasket (30) is provided on the side of the pressing plate (70) facing the snap-fit ​​part (11). An elastic element (80) is provided between the inner side of the snap-fit ​​groove (21) and the pressing plate (70).

10. The refrigerated truck cargo box splicing structure according to claim 1 or 7, characterized in that, On the end faces where the first plate (10) and the second plate (20) are spliced ​​together, sealing grooves (90) for installing sealing strips are provided.

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