Chassis of refrigerated container and refrigerated container

Abstract

The underframe of the refrigerated container comprises an aluminum floor and an auxiliary floor located below the aluminum floor, the aluminum floor comprises an upper surface, a lower surface opposite to the upper surface and a plurality of blocking ribs located on the upper surface, and the blocking ribs extend in the length direction of the underframe. An air duct extending from one end of the bottom frame to the other end of the bottom frame is formed between every two adjacent blocking ribs; the auxiliary floor and the lower surface of the aluminum floor are arranged in a spaced mode so that a cavity can be defined by the auxiliary floor and the aluminum floor, the cavity is filled with a heat preservation layer, and the heat preservation layer, the lower surface of the aluminum floor and the auxiliary floor are attached together. The friction coefficient of the upper surface of the aluminum floor is mu1, the friction coefficient of the lower surface of the aluminum floor is mu2, and mu2 is larger than mu1. The adhesive force between the lower surface of the aluminum floor and the heat preservation layer is increased, the heat preservation layer is not prone to being separated from the aluminum floor, and therefore the heat insulation effect of the bottom frame is improved, and heat leakage of the bottom frame is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to cold chain transportation technical field, concretely relates to a bottom frame of refrigerated container and refrigerated container. BACKGROUND

[0002] The bottom frame of refrigerated container includes aluminium floor, vice floor, the heat preservation layer is arranged between vice floor and aluminium floor through foaming etc. Process, the heat preservation layer is combined with aluminium floor and vice floor, can avoid the bottom frame of refrigerated container to leak heat, however, aluminium floor usually adopts aluminium material extrusion forming, is limited to the smooth surface of extrusion die, leads to the surface of aluminium floor after forming relatively smooth, roughness is lower, the adhesion of aluminium floor and heat preservation layer is relatively lower, easily causes aluminium floor and heat preservation layer to separate, thereby forms the gap between aluminium floor and heat preservation layer, makes the heat insulation effect of bottom frame difficult to meet the requirement of cold chain transportation. SUMMARY

[0003] In view of the deficiency of prior art, the purpose of the utility model is to provide a bottom frame of refrigerated container, which can prevent the separation of aluminium floor and heat preservation layer and prevent heat leakage of the bottom frame.

[0004] The second purpose of the utility model is to provide a refrigerated container.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The bottom frame of refrigerated container includes aluminium floor, vice floor located below aluminium floor, aluminium floor includes upper surface, lower surface opposite to upper surface, multiple blocking ribs located on upper surface, multiple blocking ribs all extend along the length direction of bottom frame, and form a air duct extending from one end of bottom frame to the other end between adjacent blocking ribs.

[0007] Vice floor and lower surface of aluminium floor are spaced apart to enclose a chamber by the two, and the chamber is filled with heat preservation layer, and the heat preservation layer is attached to the lower surface of aluminium floor and vice floor.

[0008] The friction coefficient of the upper surface of aluminium floor is μ1, the friction coefficient of the lower surface of aluminium floor is μ2, and μ2>μ1.

[0009] The lower surface of aluminium floor includes multiple convex ribs and multiple grooves, and the convex ribs and grooves all extend along the length direction of bottom frame, multiple convex ribs and multiple grooves are arranged along the width direction of bottom frame, and the height difference between the bottom of convex rib and the top of groove is 0.05-0.15mm.

[0010] Aluminium floor includes multiple floor units, and multiple floor units are arranged along the width direction of bottom frame.

[0011] The first butt joint part comprises a first supporting convex rib extending upwards and a convex edge extending outwards, and the second butt joint part comprises a second supporting convex rib extending upwards and a butt joint groove below the second supporting convex rib.

[0012] The cross section of the blocking rib is T-shaped or I-shaped.

[0013] The lower surface of the aluminum floor is provided with a recessed position extending in the same direction as the blocking rib.

[0014] The auxiliary floor is a corrugated plate, and the height difference between the wave crest and the wave trough is 32-36 mm.

[0015] To achieve the above-mentioned purposes, the utility model adopts the following technical scheme:

[0016] The refrigerated container comprises the chassis of the refrigerated container.

[0017] The utility model has the advantages of:

[0018] In the utility model, the friction coefficient of the lower surface of the aluminum floor is greater than that of the upper surface of the aluminum floor, so that the contact area of the heat preservation layer inside the cavity and the lower surface of the aluminum floor is increased, the adhesion between the lower surface of the aluminum floor and the heat preservation layer is increased under the condition of increasing the contact area, the heat preservation layer is not easy to separate from the aluminum floor, and thus the heat insulation effect of the chassis is improved, and heat leakage of the chassis is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the utility model;

[0020] Figure 2 It is an A-A sectional view of Figure 1

[0021] Figure 3 It is an enlarged view of B in Figure 2

[0022] Figure 4 It is an enlarged view of C in Figure 2 DETAILED DESCRIPTION

[0023] The utility model will be further described in combination with the drawings and the specific embodiments:

[0024] For example, Figure 1 , 2 ​​​, 3, the utility model discloses a refrigeration container's underframe, it includes aluminium floor 10, vice floor 20;Aluminium floor 10 includes upper surface, with the lower surface opposite upper surface, aluminium floor 10's upper surface is provided with a plurality of to the protruding fender 14, a plurality of fender 14 all along the length direction of underframe extends, the fender 14 between adjacent forms a by the underframe one end to the wind channel of another end extension, utilize the wind channel and guide the cold air that the cold machine of refrigeration container blows by the front end of underframe to rear end;Vice floor 20 is located the lower side of aluminium floor 10, and vice floor 20 is spaced apart a certain distance with aluminium floor 10 in the height direction and is set up, through the lower surface of vice floor 20 and aluminium floor 10 enclose a chamber, through foaming process, the cavity is filled with heat preservation material to form heat preservation layer 30 in the chamber, heat preservation layer 30 is bonded together with the lower surface of aluminium floor 10 and vice floor 20, wherein the friction coefficient of aluminium floor upper surface is μ1, the friction coefficient of aluminium floor lower surface is μ2, μ2> μ1, that is to say, the roughness of the lower surface of aluminium floor 10 is greater than the roughness of the upper surface of aluminium floor 10.

[0025] The utility model discloses aluminium floor 10 can be extruded by extrusion die, after extrusion, the friction coefficient of aluminium floor lower surface and upper surface is μ1, can be polished to the lower surface of aluminium floor 10 by sandpaper, grinding wheel or other polishing parts with certain roughness, the roughness of the lower surface of aluminium floor 10 is polished to μ2.

[0026] In the utility model, since the friction coefficient of the lower surface of aluminium floor 10 is set to be greater than the friction coefficient of the upper surface of aluminium floor 10, the contact area of heat preservation layer 30 inside the chamber and the lower surface of aluminium floor 10 is increased, under the condition of increasing the contact area, the adhesion of the lower surface of aluminium floor 10 and heat preservation layer 30 is increased, heat preservation layer 30 is not easy to separate from aluminium floor 10, thereby improving the heat insulation effect of underframe, preventing underframe from leaking heat.

[0027] In order to further increase the contact area of aluminium floor 10 and heat preservation layer 30, the lower surface of aluminium floor 10 includes a plurality of convex ribs 101 and a plurality of grooves 102, the convex rib 101 and the groove 102 all extend along the length direction of the underframe, the plurality of convex ribs 101 and the plurality of grooves 102 are arranged in the width direction of the underframe, the lower surface of the aluminium floor 10 is in a wave shape, the height between the bottom of the convex rib 101 and the top of the groove 102 is h1, wherein h1 is 0.05~0.15mm, the convex rib 101 and the groove 102 can be formed on the lower surface of the aluminium floor 10 when the aluminium floor 10 is processed by the extrusion die, after the convex rib 101 and the groove 102 are formed, the convex rib 101 and the groove 102 are polished by the polishing part to change the friction coefficient of the convex rib 101 and the groove 102.

[0028] The aluminum floor 10 is spliced by a plurality of floor units 11 arranged along the width direction of the chassis; at the adjacent edges of two adjacent floor units 11, the side edge of one floor unit 11 is provided with a first butt joint part 12, and the side edge of the other floor unit 11 is provided with a second butt joint part 13; the first butt joint part 12 comprises a first support protruding rib 121 extending upward and a flange 122 extending outward; the second butt joint part 13 comprises a second support protruding rib 131 extending upward and a butt joint groove 132 located below the second support protruding rib 131; the first support protruding rib 121 and the second support protruding rib 131 are connected to each other and welded at the top of both; and the flange 122 is embedded in the butt joint groove 132, so that two adjacent floor units 11 are spliced together.

[0029] The cross section of the above-mentioned blocking rib 14 is T-shaped, the lower end part thereof in connection with the upper surface of the aluminum floor 10 has a smaller width, and the upper end part thereof has a larger width; under the premise that the blocking rib 14 surrounds the air duct, the opening at the top of the air duct is relatively small, so that the top of the blocking rib 14 can provide a larger support surface to provide better support for the goods in the refrigerated container.

[0030] The above-mentioned auxiliary floor 20 is a corrugated plate, and the height difference between the wave crest and the wave trough of the auxiliary floor 20 is h2, wherein h2 is 32-36 mm.

[0031] The refrigerated container of the utility model, comprising the chassis of the above-mentioned refrigerated container, the other structures of the refrigerated container are same with prior art, and here is not explained in detail.

[0032] The above-mentioned embodiments are only used to illustrate the technical scheme of the utility model, and not to limit it; although the utility model has been explained in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that they can still modify the technical scheme recorded in the above-mentioned embodiments, or make equivalent replacement to part of the technical features, and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the spirit and range of the technical scheme of the embodiments of the utility model.

Claims

1. A chassis for a refrigerated container, characterised in that, The aluminum floor includes an upper surface, a lower surface opposite to the upper surface, and a plurality of blocking ribs on the upper surface, the blocking ribs all extend along the length direction of the chassis, and a wind channel is formed between adjacent blocking ribs and extends from one end of the chassis to the other end; The auxiliary floor is spaced apart from the lower surface of the aluminum floor to form a cavity therebetween, and the cavity is filled with a thermal insulation layer which is attached to the lower surface of the aluminum floor and the auxiliary floor; The friction coefficient of the upper surface of the aluminum floor is μ1, and the friction coefficient of the lower surface of the aluminum floor is μ2, and μ2>μ1.

2. A chassis for a refrigerated container as claimed in claim 1, characterised in that, The lower surface of the aluminum floor includes a plurality of convex ribs and a plurality of grooves, the convex ribs and the grooves all extend along the length direction of the chassis, the plurality of convex ribs and the plurality of grooves are arranged in the width direction of the chassis, and the height difference between the bottom of the convex rib and the top of the groove is 0.05-0.15 mm.

3. A chassis for a refrigerated container as claimed in claim 1, characterised in that, The aluminum floor includes a plurality of floor units, and the plurality of floor units are arranged in the width direction of the chassis.

4. A chassis for a refrigerated container as claimed in claim 3, characterised in that, In the two adjacent floor units, a first butt joint is arranged on the side edge of one of the floor units, and a second butt joint is arranged on the side edge of the other floor unit, the first butt joint includes a first support convex rib extending upward and a convex edge extending outward, the second butt joint includes a second support convex rib extending upward and a butt joint groove below the second support convex rib, the first support convex rib and the second support convex rib abut and are welded and fixed, and the convex edge is embedded in the butt joint groove.

5. A chassis for a refrigerated container as claimed in claim 1, characterised in that, The cross section of the blocking rib is T-shaped or I-shaped.

6. A chassis for a refrigerated container as claimed in claim 5, characterised in that, The lower surface of the aluminum floor is provided with a recess at a position opposite to the blocking rib, and the extending direction of the recess is consistent with the extending direction of the blocking rib.

7. A chassis for a refrigerated container as claimed in claim 1 wherein, The auxiliary floor is a corrugated plate, and the height difference between the wave crest and the wave trough is 32-36 mm.

8. A refrigerated container characterised in that, The chassis of the refrigerated container includes the chassis of any one of claims 1-7.

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