Chassis of refrigerator van and refrigerator van

Abstract

The utility model discloses a bottom frame of a refrigerator van and the refrigerator van. The bottom frame of the refrigerator van comprises two bottom side beams, a plurality of bottom cross beams, an auxiliary floor and a floor, the bottom cross beams are connected between the two bottom side beams and arranged in the extending direction of the bottom side beams, so that the bottom cross beams and the two bottom side beams form a frame, the auxiliary floor is laid on the frame, the floor is located above the auxiliary floor, and the space between the floor and the auxiliary floor is filled with a heat preservation layer; an extending plate which extends inwards and is arranged above the bottom cross beams is arranged on the bottom side beams, and a slot with an inward opening is formed between the extending plate and the top surfaces of the bottom cross beams; a sealing piece is arranged between the extending plate and the edge of the auxiliary floor and comprises a fixing wall inserted into the inserting groove and a sealing lip piece located on the upper surface of the edge of the auxiliary floor.

Description

Technical Field

[0001] This utility model relates to the field of cold chain transportation technology, specifically to a refrigerated truck chassis and a refrigerated truck body. Background Technology

[0002] The underframe of a refrigerated truck includes two bottom side beams, multiple bottom cross beams, a floor, and a subfloor. The two bottom side beams and multiple bottom cross beams form a frame structure. The subfloor is placed above the multiple bottom cross beams, and the floor is located above the subfloor, forming a sandwich structure with it. An insulation layer is filled inside the sandwich structure, and the insulation layer is formed by a foaming process. Since the subfloor of a refrigerated truck is usually made of fiberglass (FRP) sheet, its rigidity is relatively low, especially at the edges. When foaming the sandwich between the subfloor and the floor, the edge of the subfloor located between the two bottom cross beams will bend downward due to the pressure of the foam, resulting in a wavy edge. The deformed subfloor cannot fit well with the bottom side beams, creating a large gap at the joint between the subfloor and the bottom side beams. After assembling the underframe and side panels, secondary foaming is required at the joints of the underframe and side panels. The foaming material from the secondary foaming will leak out from the gap between the subfloor and the bottom side beams, resulting in waste of foaming material. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to propose a refrigerated truck chassis that can prevent leakage of foaming material during secondary foaming, avoid waste of foaming material, and improve the quality of secondary foaming.

[0004] The second objective of this utility model is to provide a refrigerated truck compartment.

[0005] To achieve the first objective mentioned above, this utility model adopts the following technical solution:

[0006] The underframe of the refrigerated truck includes two bottom side beams, multiple bottom cross beams, a subfloor, and a floor.

[0007] Multiple bottom crossbeams are connected between two bottom side beams and arranged along the extension direction of the bottom side beams so that the multiple bottom crossbeams and the two bottom side beams form a frame. The subfloor is laid on the frame, the floor is located on top of the subfloor, and an insulation layer is filled between the floor and the subfloor.

[0008] An extension plate extending inward and positioned above multiple bottom crossbeams is provided on the bottom side beam, and an inward-facing slot is formed between the extension plate and the top surface of the multiple bottom crossbeams.

[0009] A seal is provided between the edge of the extension plate and the sub-floor, the seal including a retaining wall inserted into a slot and a sealing lip located on the upper surface of the sub-floor edge.

[0010] A gap is formed between the subfloor and the top surface of the bottom crossbeam. The seal includes a plug-in wall extending inward from the inner edge of the fixed wall. The plug-in wall is inserted into the gap so that the plug-in wall is clamped between the subfloor and the top surface of the bottom crossbeam.

[0011] The seal includes a support wall extending upward from the junction of a fixed wall and a plug wall, the support wall being located between the edge of the sub-floor and the inner edge of the extension plate.

[0012] An upwardly extending rib is provided on the inner side of the extension plate. The rib is supported on the outer side of the support wall. The sealing lip is connected to the inner side of the support wall. The sealing lip includes a first section extending horizontally inward from the inner side of the support wall and a second section connected to the inner side of the first section. The first section is pressed on the upper surface of the sub-floor, and the second section gradually slopes upward from the outside to the inside.

[0013] The top of the supporting wall is provided with a shielding part that extends outward and is positioned above the rib.

[0014] The extension plate overlaps the top surface of the bottom crossbeam. The lower surface of the extension plate has a recess extending outward from the inner side of the extension plate. The slot is formed by the top surface of the recess, the outer end surface of the recess, and the top surface of the bottom crossbeam.

[0015] The bottom side beam includes an upper connecting section extending upward from the outer edge of the extension plate and a lower connecting section extending downward from the outer edge of the extension plate. A connector is fixed to the inner surface of the lower connecting section, and the end of the bottom cross beam is fixedly connected to the connector by bolts or rivets.

[0016] The upper surface of the extension plate is flat, and the seal includes a sealing sheet connected above the fixed wall, which is attached to the upper surface of the extension plate.

[0017] To achieve the second objective mentioned above, this utility model adopts the following technical solution:

[0018] Refrigerated car body, including the underframe of the aforementioned refrigerated car body.

[0019] The beneficial effects of this utility model are as follows:

[0020] This invention seals the edge of the subfloor to the bottom beam with a sealing element. During secondary foaming, the foaming material presses the sealing lip downwards, firmly pressing the sealing lip onto the upper surface of the subfloor. This prevents the foaming material from leaking out between the subfloor and the bottom beam, thus overcoming the problem of secondary foaming material leakage caused by deformation of the subfloor and improving the quality of secondary foaming. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0022] Figure 2for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention. Detailed Implementation

[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0025] like Figure 1 , 2 As shown, the underframe of the refrigerated truck compartment according to Embodiment 1 of this utility model includes two bottom side beams 10, multiple bottom cross beams 20, a subfloor 30, and a floor 40. The two bottom side beams 10 are respectively lower than the two sides of the underframe. The multiple bottom cross beams 20 are connected between the two bottom side beams 10 and arranged along the extension direction of the bottom side beams 10. The multiple bottom cross beams 20 and the two bottom side beams 10 together form a frame. The subfloor 30 is laid on the frame. The floor 40 is located above the subfloor 30 and is spaced a certain distance from the subfloor 30, so that the subfloor 30 and the floor 40 form a sandwich structure. An insulation layer is filled in the sandwich structure. The insulation layer is formed by a foaming process. An inwardly extending extension plate 13 is provided on the bottom side beam 10. The extension plate 13 is placed on the top surface of multiple bottom crossbeams 20, forming an inwardly opening slot between the extension plate 13 and the top surface of the multiple bottom crossbeams 20. A sealing member 50 is provided between the extension plate 13 and the edge of the sub-floor 30. The sealing member 50 includes a fixing wall 51 and a sealing lip 52. The fixing wall 51 is inserted into the slot. The fixing wall 51 is clamped by the lower surface of the extension plate 13 and the top surface of the bottom crossbeam 20, so that the sealing member 50 and the bottom side beam 10 are kept relatively fixed. The sealing lip 52 is located above the edge of the sub-floor 30.

[0026] Before assembling the base frame and the side wall of the housing, the fixing wall 51 of the sealing element 50 is inserted into the slot, so that the sealing element 50 is relatively fixed with the bottom side beam 10 and the bottom cross beam 20. The sealing element 50 is placed between the edge of the sub-floor 30 and the extension plate 13 of the bottom side beam 10. The sealing lip 52 located above the edge of the sub-floor 30 fits against the upper edge of the sub-floor 30, thereby sealing the edge of the sub-floor 30 with the bottom side beam 10 through the sealing element 50. During the secondary foaming, the foaming material squeezes the sealing lip 52 downward, so that the sealing lip 52 is firmly pressed on the upper surface of the sub-floor 30, preventing the foaming material from leaking out between the sub-floor 30 and the bottom side beam 10. This overcomes the problem of secondary foaming material leakage caused by the deformation of the sub-floor 30 and improves the quality of secondary foaming.

[0027] A gap is formed between the sub-floor 30 and the top surface of the bottom crossbeam 20. The sealing element 50 includes a plug-in wall 53, which extends inward from the inner edge of the fixed wall 51 and is inserted into the gap. The plug-in wall 53 is clamped by the lower surface of the sub-floor 30 and the top surface of the bottom crossbeam 20. The sealing element 50 can be made of PVC. The plug-in wall 53 can correct the shape of the edge of the sub-floor 30 and further improve the sealing performance of the sealing element 50.

[0028] The sealing element 50 is made of PVC profile. An upwardly extending support wall 54 is provided at the junction of the fixed wall 51 and the plug-in wall 53. The support wall 54 increases the longitudinal strength of the entire sealing element 50 to prevent large deformation of the sealing element 50 when it is installed between the bottom side beam 10 and the sub-floor 30. After extending upward, the support wall 54 passes between the edge extension plates 13 of the sub-floor 30. That is, the support wall 54 is located between the edge of the sub-floor 30 and the inner side of the extension plate 13. During secondary foaming, the support wall 54 can be used to block part of the foaming material, so that more foaming material can press the sealing lip 52 tightly on the inner side of the support wall 54, preventing more foaming material from entering below the extension plate 13. In addition, an upwardly extending rib 131 is provided on the inner side of the extension plate 13. The rib 131 is supported on the outer side of the support wall 54. The rib 131 increases the contact area between the extension plate 13 and the support wall 54, thereby further improving the longitudinal strength of the support wall 54. The sealing lip 52 is connected to the inner side of the support wall 54. The sealing lip 52 includes a first section 521 and a second section 522. The first section 521 extends horizontally inward from the inner side of the support wall 54 and is pressed on the upper surface of the sub-floor 30. The second section 522 is connected to the inner side of the first section 521 and gradually slopes upward from the outside to the inside. With the sealing lip 52 configured as described above, during secondary foaming, the foaming material presses the sealing lip 52 from top to bottom, causing the sealing lip 52 to be pressed downwards against the upper surface of the sub-floor 30. When the sealing lip 52 is deformed downwards by the foaming material, the inclined second segment 522 gradually deforms downwards, allowing the sealing lip 52 to eventually completely adhere to the upper surface of the sub-floor 30, thus preventing the formation of a void between the sealing lip 52 and the upper surface of the sub-floor 30.

[0029] To prevent foam material from flowing into the space between the support wall 54 and the extension plate 13 and below the extension plate 13, an outwardly extending shielding part 55 is provided at the top of the support wall 54, and the shielding part 55 is located above the rib 131.

[0030] The extension plate 13 overlaps the top surface of the bottom crossbeam 20. A recess 132 is provided on the lower surface of the extension plate 13. The recess 132 extends outward from the inner side of the extension plate 13. The slot is formed by the top surface of the recess 132, the outer end surface of the recess 132, and the top surface of the bottom crossbeam 20.

[0031] The aforementioned bottom side beam 10 includes an upper connecting section 11 extending upward from the outer edge of the extension plate 13, and a lower connecting section 12 extending downward from the outer edge of the extension plate 13. A connector 14 is fixed to the inner surface of the lower connecting section 12, and the end of the bottom cross beam 20 is fixedly connected to the connector 14 by bolts or rivets. The upper connecting section 11 is used to connect the bottom side beam 10 to the side wall of the refrigerated compartment. When assembling the bottom cross beam 20 with the bottom side beam 10, the extension plate 13 overlaps on the top surface of the bottom cross beam 20 to position the bottom side beam 10 and the bottom cross beam 20 in the vertical direction, so that the connector 14 is aligned with the end of the bottom cross beam 20. Bolts or rivets are used to pass through the connector 14 and the end of the bottom cross beam 20 to fix the bottom cross beam 20 and the bottom side beam 10 together.

[0032] Figure 3 The underframe of the refrigerated truck compartment in Embodiment 2 of this utility model includes a sealing element 60, which includes a sealing sheet 65 located above the extension plate 13 of the bottom side beam. The upper surface of the extension plate 13 is flat, and the sealing sheet 65 is attached to the upper surface of the extension plate 13. By using the sealing sheet 65 and the fixed wall 61 including the extension plate 13, a good seal is achieved between the sealing element 60 and the bottom side beam 10.

[0033] The refrigerated truck body of this utility model includes the aforementioned refrigerated truck body chassis. The other structures of the refrigerated truck body are the same as those in the prior art and will not be described in detail here.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. The underframe of a refrigerated truck compartment, characterized in that, Includes two bottom side beams, multiple bottom crossbeams, a subfloor, and the floor. Multiple bottom crossbeams are connected between two bottom side beams and arranged along the extension direction of the bottom side beams so that the multiple bottom crossbeams and the two bottom side beams form a frame. The subfloor is laid on the frame, the floor is located on top of the subfloor, and an insulation layer is filled between the floor and the subfloor. An extension plate extending inward and positioned above multiple bottom crossbeams is provided on the bottom side beam, and an inward-facing slot is formed between the extension plate and the top surface of the multiple bottom crossbeams. A seal is provided between the edge of the extension plate and the sub-floor, the seal including a retaining wall inserted into a slot and a sealing lip located on the upper surface of the sub-floor edge.

2. The underframe of the refrigerated truck compartment as described in claim 1, characterized in that, A gap is formed between the subfloor and the top surface of the bottom crossbeam. The seal includes a plug-in wall extending inward from the inner edge of the fixed wall. The plug-in wall is inserted into the gap so that the plug-in wall is clamped between the subfloor and the top surface of the bottom crossbeam.

3. The underframe of the refrigerated truck compartment as described in claim 2, characterized in that, The seal includes a support wall extending upward from the junction of a fixed wall and a plug wall, the support wall being located between the edge of the subfloor and the inner edge of the extension plate.

4. The underframe of the refrigerated truck compartment as described in claim 3, characterized in that, An upwardly extending rib is provided on the inner side of the extension plate. The rib is supported on the outer side of the support wall. The sealing lip is connected to the inner side of the support wall. The sealing lip includes a first section extending horizontally inward from the inner side of the support wall and a second section connected to the inner side of the first section. The first section is pressed on the upper surface of the sub-floor, and the second section gradually slopes upward from the outside to the inside.

5. The underframe of the refrigerated truck compartment as described in claim 4, characterized in that, The top of the supporting wall is provided with a shielding part that extends outward and is positioned above the rib.

6. The underframe of the refrigerated truck compartment as described in claim 1, characterized in that, The extension plate overlaps the top surface of the bottom crossbeam. The lower surface of the extension plate has a recess extending outward from the inner side of the extension plate. The slot is formed by the top surface of the recess, the outer end surface of the recess, and the top surface of the bottom crossbeam.

7. The underframe of the refrigerated truck compartment as described in claim 1, characterized in that, The bottom side beam includes an upper connecting section extending upward from the outer edge of the extension plate and a lower connecting section extending downward from the outer edge of the extension plate. A connector is fixed to the inner surface of the lower connecting section, and the end of the bottom cross beam is fixedly connected to the connector by bolts or rivets.

8. The underframe of the refrigerated truck compartment as described in claim 1, characterized in that, The upper surface of the extension plate is flat, and the seal includes a sealing sheet connected above the fixed wall, which is attached to the upper surface of the extension plate.

9. A refrigerated truck compartment, characterized in that, Includes the underframe of the refrigerated truck as described in any one of claims 1-8.

Images