CN101274697A - refrigerated container - Google Patents

Abstract

The invention relates to a refrigerated container. The soleplate of the refrigerated container comprises a floor arranged in the container body, an assistant corrugated floor arranged outside the container body, and a foaming material layer which is filled between the floor and the assistant floor; the assistant floor is connected with a bottom side beam and comprises a plurality of peaks and troughs with the same shape and arranged at intervals, and the part between the peak and the trough is an wave inclined edge. The refrigerated container is characterized in that the included angle between the wave inclined edge and the horizontal direction is less than 45 degrees. Compared with the prior art, the refrigerated container has the advantages of high welding quality, convenient painting, low cost, high production efficiency and good rigidness, etc.

Description

refrigerated container

technical field

This invention relates to a container and more particularly to an improved floor for refrigerated containers.

Background technique

The bottom plate of the existing refrigerated container is generally composed of the upper T floor and the lower sub-floor filled with foam material; among them, the corrugated sub-floor structure is widely used because of its good air leakage resistance and light weight. The sub-floor is generally formed by overlapping or splicing (welding or bonding) multiple corrugated sub-floors to form a whole sub-floor. As shown in FIG. 1 and FIG. 2 , the whole sub-floor 1 is welded on the bottom side beam 2 . Place the T floor 3 on one side of the auxiliary floor, and leave a certain distance between the two to fill the heat-insulating foam 4 . Since each corrugated sub-floor is welded or bonded to form the entire sub-floor, the sub-floor 1 and the bottom side beam 2 are welded together, so the air leakage resistance is good, and the whole corrugated sub-floor is lighter than the steel bottom beam structure. The waveform distribution of sub-floors currently used in refrigerated containers is shown in Figure 2. The sub-floor 1 is a corrugated sub-floor with multiple peaks 8, sloping sides 7, and troughs 6 of the same shape arranged alternately. The angle of the sloping sides is greater than 45°. °, and the waves reach a depth of 50mm to 60mm. The deep wave waveform has the following disadvantages:

(1) There are many pressing and assembling processes, and the efficiency is low;

(2) The welding with the bottom side beam is all used for manual welding, which has low welding efficiency and poor forming;

(3) The trough foam material does not have a heat insulation effect;

(4) The paint construction is difficult, resulting in a huge difference in the thickness of the paint film between the crest and the trough, and the waste is serious.

Contents of the invention

The purpose of the present invention is to overcome the defects of the above-mentioned prior art on the premise of ensuring the strength and heat insulation performance, and provide a refrigerated container whose bottom plate can realize automatic welding and automatic painting, reduce cost and reduce the probability of collision.

The purpose of the present invention is achieved in the following manner: in the refrigerated container of the present invention, the bottom plate includes a floor inside the box, a corrugated sub-floor outside the box, and a foaming material filled between the floor and the sub-floor layer, the sub-floor is connected to the bottom side beam, and the corrugated sub-floor includes a plurality of crests and troughs of the same shape arranged alternately in sequence, and there is a wave hypotenuse between the crests and the troughs, which is characterized in that: The angle formed by the hypotenuse and the horizontal direction is less than 45°.

In the refrigerated container of the present invention, the wave depth of the corrugated sub-floor is 32-46mm.

In the refrigerated container of the present invention, the wave depth of the corrugated sub-floor is 36mm.

In the refrigerated container of the present invention, the widths of the peaks and troughs are equal.

In the refrigerated container of the present invention, the widths of the hypotenuses of the waves are all the same.

In the refrigerated container of the present invention, the wave crests and troughs are flat.

In the refrigerated container of the present invention, the connection between the sub-floor and the bottom side beam is welding.

In the refrigerated container of the present invention, the floor is a T floor.

The beneficial effects of the present invention are:

Compared with the prior art, the invention optimizes and improves the waveform of the corrugated sub-floor of the refrigerated container, can realize automatic welding and automatic painting, improves production efficiency and welding quality, reduces waste, rationally distributes the waveform, and saves materials.

Description of drawings

Fig. 1 is a transverse sectional view of the bottom plate of a refrigerated container;

Fig. 2 is a partial longitudinal sectional view of the corrugated sub-floor and the foam material layer of the bottom plate of the refrigerated container in the prior art;

Fig. 3 is a partial longitudinal sectional view of the corrugated sub-floor and the foam material layer of the bottom plate of the refrigerated container of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Among them, Fig. 1 is a transverse sectional view of the bottom plate of the refrigerated container; Fig. 3 is a partial longitudinal sectional view of the corrugated sub-floor and the foam material layer of the refrigerated container bottom plate of the present invention.

As shown in Figures 1 and 3, the bottom plate of the refrigerated container of the present invention includes a floor 3 inside the box, a corrugated sub-floor 1 outside the box, and a foaming material filled between the floor 1 and the corrugated sub-floor 3 Layer 4, the corrugated sub-floor 1 is fixedly connected to the bottom side beam 2, the corrugated sub-floor 1 includes a plurality of crests 8 and troughs 6 of the same shape arranged alternately in sequence, and there is a wave between the crests 8 and the troughs 6 The angle a or b formed by the hypotenuse 7 and the horizontal direction is less than 45°. The angle formed by the hypotenuse of the wave and the horizontal direction refers to the acute angle formed by the hypotenuse of the wave and the horizontal direction.

The floor 3 located in the box is preferably a T-floor with a T-shaped cross-section, and a corrugated board can also be used. The foam material layer 4 is preferably a polyurethane foam layer.

The wave depth of the corrugated sub-floor of the bottom plate of the refrigerated container of the present invention is preferably 32-46 mm. In a preferred embodiment, except for the four water leaker areas, the wave depth of the corrugated sub-floor is 36 mm. The wave depth mentioned in this specification refers to the distance between the crest and the straight line where the trough is located.

As shown in Figure 1 and Figure 3, in the preferred embodiment of the bottom plate of the refrigerated container of the present invention, the crests 8 and troughs 6 are flat, the widths of the crests 8 and the troughs 6 are equal, and the widths of the bevels 7 of each wave are the same .

The fixed connection between the sub-floor 1 and the bottom side beam 2 can be welding, and the bottom plate of the refrigerated container of the present invention can weld the sub-floor 1 to the bottom side beam 2 by automatic welding.

The bottom plate of the refrigerated container of the present invention can also be arc-shaped, the wave crests, wave troughs, and wave slopes. At this time, the angle between the wave slope and the horizontal direction refers to the angle between the tangent of a certain point on the wave slope and the horizontal direction.

The corrugated sub-floor of the present invention is improved and optimized on the basis of the original waveform, the number of waves is increased, the depth of waves is reduced, and the slope of the wave hypotenuse is less than 45 degrees, which can realize automatic welding, thereby improving production Efficiency, improving the working environment and realizing the standardization of parts. The reasonable distribution of corrugated sub-floor waveforms in the present invention reduces the material consumption of corrugated boards, saves materials, and can realize automatic painting, which reduces the waste of paint and reduces the cost. During use, the corrugated sub-floor will be damaged due to collisions. With the waveform of the present invention, the wave depth becomes shallower, and the height of the sub-floor from the ground increases, thereby reducing the probability of collisions and reducing maintenance costs during use. .

As for thermal insulation performance, since the thickness of the thinnest part of the foam layer does not change, and there are other heat leakage concentrated areas on the bottom plate, such as the gooseneck area of the 40' refrigerated container and the fork groove area of the 20' refrigerated container, Therefore, there is no obvious difference between the present invention and the heat leakage performance of the existing bottom plate.

The invention has been tested and proved to meet the requirements of ISO-1496/2 on the rigidity and heat leakage requirements of the bottom plate of the refrigerated container.

The above are only preferred feasible embodiments of the present invention, and the embodiments are not intended to limit the scope of patent protection of the present invention, so all equivalent structural changes made by using the description and accompanying drawings of the present invention are equally valid. Should be included in the protection scope of the present invention.

Claims (8)

1. A kind of refrigerated container, its bottom plate comprises the floor that is positioned at the box body, is positioned at the corrugated sub-floor outside the casing, is positioned at the foaming material layer that fills between described floor and described sub-floor, and described sub-floor is connected to bottom The side beam, the corrugated sub-floor includes a plurality of crests and troughs of the same shape arranged alternately in sequence, between the crests and the troughs is a wave hypotenuse, which is characterized in that the angle formed between the wave hypotenuse and the horizontal direction Less than 45°. 2. The refrigerated container according to claim 1, characterized in that: the wave depth of the corrugated sub-floor is 32-46mm. 3. The refrigerated container according to claim 1, wherein the corrugated sub-floors have a wave depth of 36mm. 4. The refrigerated container according to claim 1, characterized in that: the widths of the peaks and troughs are equal. 5. The refrigerated container according to claim 1, characterized in that: the widths of the hypotenuses are all the same. 6. The refrigerated container according to claim 1, characterized in that: the peaks and troughs are flat. 7. The refrigerated container according to claim 1, characterized in that: the connection between the sub-floor and the bottom side beam is welding. 8. The refrigerated container according to claim 1, wherein the floor is a T floor.

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