CN1108611A - Improed bulk container - Google Patents

Abstract

A bulk container integrally molded from a plastic material and providing substantially exclusive transfer of vertical loads thru the corners of a lower container during stacking, and increased volumetric capacity. The front, rear and side sections of the container are integrally formed with a bottom wall portion to form a containment volume with a plurality of corners. A plurality of nesting protrusions extend downwardly from the lower portion of the corners and a corresponding plurality of nesting recesses are formed in the upper portion of the corners so that two containers can be vertically stacked with each protrusion mated with a corresponding recess. The corners include reinforcing vertical column portions having inwardly spaced wall portions blending into containment wall portions. The bottom wall portion tapers downwardly in the direction outward from the center and blends into the lower regions of the containment wall portions.

Description

Improed bulk container

The present invention relates to a kind of seasoning and transport the bulk container of a large amount of far productss, industry and other products of being used for.

Bulk container is used for seasoning and transport a large amount of different types of article, such as far products and industrial goods and so on.The US Patent that is entitled as " freight container " that on January 19th, 1993 authorized discloses this freight container the 5th, 180, No. 064, awards and draws at this with for referencial use.In the ' No. 064 patent disclosed this bulk container be one have by a bottom wall portion connect be compounded to form, forward and backward and plastic freight container that sidewall sections becomes one.This bottom wall portion by be integrally formed therewith, it is supported on the foot section that ground or lip-deep the past of other supporting mass extend back container base is propped.These two lateral branch foots are provided with the detouchable foot member in the hollow downside that removably inserts the footing part that is processed into the channel cross-section shape.The angle post supporting part that is integrally molded as provides structural booster action for this freight container.The ' No. 064 patent freight container also is provided with a kind of novelty in front and back integral body is inserted mouthful, helps the fork of fork truck or the downside along this freight container inserts from the place ahead or from the rear when needs lift or be transported to another position with this freight container.This integral body is inserted mouth and is comprised and a plurality ofly forming and from the arcuate rib of the outward extending longitudinal extension of tank wall of front and aft section along the bottom wall portion downside.

Bulk container not only designs but also designs for piling up for single, freestanding purposes, so that make this freight container and their bulk freight seasoning and transportation effectively.For this purpose, the bottom external support structure all made in the Nei Zhou district of the top that can partly be seated in another identical freight container of the size of most of bulk containers is beneficial to they are piled up.More particularly, the general inside horizontal expansion in the base of container base (the perhaps foot member in the ' No. 064 patent) is extended downwards then so that be contained among the Nei Zhou district at container top edge, below.When piling up, the outer bottom edge of top freight container is meshed with the upper surface portion of below container edge at least so that the vertical load of top freight container scatter by the mate at edge and the wall construction of below freight container.This edge of this designing requirement and wall portions have sizable intensity to support the load of top freight container.Although to by material firm in structure, this can not throw into question the freight container of making such as steel, yet for running into problem by the freight container that is molded as such as very not crash-resistant material.In addition, because the cantilever of physical construction, vertical load produces sizable stress on the point of connection between the offseting downward of the horizontal expansion portion of freight container and bottom margin up, the result, unless adds other reinforcement or thicker material is set and strengthen being subjected to the maximum stress part, otherwise this part of freight container generally can early failure.

In theory, the outside dimension of bulk container preferably will be designed to a maximum container capacity can be provided but still be no more than the upperlimit of putting in storage or transporting this freight container defined in haulage truck or rolling stock.Because the wall portion of the forward and backward and both sides of the freight container that No. the ' 064, patent has to from the inside shift-in of outside face, therefore, it has lost some original available internal capacities.

The invention provides a kind of bulk container that has improved, it can avoid cantilever force problem that existing freight container runs into and can be under the situation of the outside dimension that does not enlarge freight container and increase its volume fully.

On the one hand, bulk container provided by the invention has forward and backward and both sides that integrally couple together in the corner and the vertical column supporting part that vertical stratification stability is provided for this freight container.Forward and backward and both sides respectively comprise one the corner broaching have hold when piling up above the upper rim of recess of corresponding footing extension of freight container, when piling up, by the below freight container, the column sections of bent angle assigns to transmit vertical load to this recess fully.These recesses be preferably formed as in the corner of upper rim and end at the upper surface at this edge and the upper surface of inner flange between intermediate surface on.Cooresponding with it footing extension preferred design becomes to extend to the outermost end portion of these recesses so that will vertically cut on the columnar region that lotus is distributed in the corner.Inner flange is integrally formed at the part of the forward and backward and both sides of this freight container as it, horizontal structure stability in the horizontal direction is provided for this bulk container.

On the other hand, the present invention's planform of extending to the upstanding wall portion of maximum position along vertical distance by reinforcing section internally increases the volume of freight container.In addition, the present invention also comprises a base structure, it have one therefrom the heart out to the evagination basically of its outside convergent downwards or become hemispheric upper surface.The seasoning product provides more space to this upper surface in this bulk container from the center to its outside downward being punctured into gradually.

For when this freight container needs bigger bearing strength, auxiliary independent vertical tension member is provided, the present invention also is provided with and is easy to the hollow pillar stand part that enters from this freight container bottom.

In order to fully understand characteristic of the present invention and advantage, please consult following detailed in conjunction with the accompanying drawings.

Fig. 1 is the block diagram of a most preferred embodiment of the present invention;

Fig. 2 is the cutaway view along the line 2-2 among Fig. 1, shows the structure of antetheca and diapire;

Fig. 3 is the cutaway view along Fig. 1 center line 3-3, shows the structure of sidewall and diapire;

Fig. 4 is the lateral plan of a freight container footing;

Fig. 5 is the upward view of the footing among Fig. 4;

Fig. 6 is the partial top view of a bent angle of the present invention, there is shown to stack recess;

Fig. 7 is the cutaway view along Fig. 6 center line 7-7;

Fig. 8 is the detailed view that two freight containers stack;

Fig. 9 is the cutaway view along Fig. 1 center line 9-9, shows the use that an auxiliary single column supports;

Figure 10 and Figure 11 illustrate other suitable partial bottom view that stacks jut on the footing.

Now consult accompanying drawing.Fig. 1 is the block diagram of a most preferred embodiment of the present invention.As shown in the drawing, totally the bulk container with label 10 expressions has overall front and rear portions and the overall both sides of representing with label 12,14 respectively with label 16,18 expressions.This bulk container 10 is integral structures, preferably adopts suitable molded and shaped material, and for example high density polyethylene (HDPE), polypropylene or other suitable polyolefin are made with the method for injection mo(u)lding.12,14,16 are connected to form a volume that is used to deposit the opened type bulk container of bulk products or industrial goods by a bottom wall portion 20 with the lower inner of 18 parts.

This freight container 10 is bearing in the bottom by being contained in a some detachable foot member 22 that is formed in the recess of 16,18 bottoms, both sides along sidepiece.These structures hereinafter can more fully be described.

Consult Fig. 2, anterior 12 have a perforated wall portion 25 that has a breather hole 26.The top portion of this wall portion 25 along transition region 27 towards an inside convergent in top with the vertical stretch 28 that forms the upper inside wall surface.This extension 28 converges with outward extending horizontal flanges 29, and the latter converges mutually with an extension, top 30 that ends at an outward extending edge part 32 again.Strengthening rib 33-35 of a plurality of (among the figure being 3) horizontal expansion and extension 28 form one, as shown in Figure 2.

Lower end edge one radius 40 of upstanding wall portion 25 converges mutually with the edge portion of bottom wall portion 20.In addition, extend from the joint of the following portion of radius 40 and upstanding wall portion 25 a downward outside 42.

Anterior 12 are provided with a B-pillar supporting part, and it has an interior wall construction 43, for front portion 12 provides auxiliary vertical stiffness.

Along the downside of bottom wall portion 20 be a plurality of single-pieces that upwards bend and end at part 42 along outward direction insert mouthful strengthening rib 50(Fig. 2 only visible one of them).The supporting rib 52 of a plurality of horizontal expansions provides lateral rigidity from the downside extension downwards of bottom wall portion 20.Rib 52 ends at the insertion that the integrally formed following portion that inserts mouthful strengthening rib 50 to be fit to the method described in ' No. 064 patent fork truck (not shown) fork.Along the downside of bottom wall portion 20, the outside that the integral body of this freight container is inserted oral region also is provided with cross rib 54.The sectional structure at rear portion 14 is the same with front portion shown in Figure 2 12.

Fig. 3 shows the wall construction that analyse and observe left side 16.From Fig. 3 obviously as can be known, the structure of the central authorities of sidepiece 16 and topmost and the structural similitude of describing above with reference to Fig. 2.But its underpart comprises that one has the downward outer footing wall portion 61 in a plurality of holes 62, hereinafter will describe their effect.One lets droop from bottom wall portion 20 with the interior footing wall part 63 of its coupling.The rib 65 of a plurality of longitudinal extensions is sagging from diapire 20.Some ribs 65 wherein can comprise the whole extension that inserts mouthful strengthening rib 50.Perhaps, rib 65 can not influencing in the middle of integral body is inserted mouthful strengthening rib insert mouthful longitudinal extension rib that the position of working has other to separate each other.

From more obviously can knowing of Fig. 2 and Fig. 3, bottom wall portion 20 has a slightly protruding upper surface, and its top wall surface is along with extending and descend in the zone of its outside of mind-set therefrom.This time combines with the outside layout of wall portion 25 to the structure of convergent, compares with existing installation, more capacity is provided for this freight container.As an example, by this point of the present invention with size make high its volume ratio size of bulk container of 47 3/4 English inch * 47 3/4 English inch * 1/2 English inch make 47 English inch * 47 English inch * 28 1/4 English inch high shown in No. 064 patent of above-mentioned ' style bulk container about 12.8%.Although the former size is big slightly, difference only is 4%.Therefore, the increase of this routine capacity is about 8.8%.

Consult Fig. 4 and Fig. 5, the foot member 22 of freight container 10 by a pair of detouchable longitudinal extension is supported from the bottom.Each foot member 22 has its two ends to end at the middle body 71 of the footing pedestal with upstanding wall 72, and its size is made the wall portion 61, the 63(that let droop that can be contained in sidepiece 16,18 and seen Fig. 3) in the space that provided.Foot member 22 is provided with a plurality of Unitarily molded juts that form 74, can embed apace in the mounting hole 76 that forms along the bottom of side wall portion 16,18.

An important characteristic of the present invention is that it has all bent angle transmission by the below freight container from the structure of the vertical load of the freight container that is stacked on the top.This function by a plurality of tops week districts along freight container distribute stack recess and correspondingly from the bent angle of foot member 22 downwards the jut that stacks of extension realize.Can know from Fig. 1 and Fig. 6 to Fig. 8 and to find out, with the upper limb of freight container 10 in each corner broaching and form a recess 80 at each bent angle.Each recess 80 can be used for the jut 78 of corresponding corner of the ccontaining foot member 22 that cooperates with it.Each projection 78 extends on the corner area and ends at basically the position that the outer wall end face with recess 80 roughly extends jointly, vertical load is distributed in whole corner area.Container edge 32 is higher than the intermediate surface 82 of inner flange 29 by tapered wall 83 downward-sloping one-tenth one near bent angle portion.The selected size of each recess 80 is consistent with the length that stacks jut 78 on the foot member 22.Therefore, when a freight container 10 is stacked in another top, top freight container 10 be positioned on the freight container of below with being careful in case footing jut 78 can place top 32 stack recess 80.In case alignment, jut 78 just is inserted in the recess 80, and vertical load is whole bent angle portions by the below freight container or be passed to ground and directly support or be passed to another below freight container (under the situation of the freight container of stacking more than three or three) basically.In addition, also provide the stability of vertical direction, made top freight container 10 can not break away from recess 80 and it must be lifted because of collision moves apart its nested position until projection 78.

Although for seasoning, pile up with the transportation purpose be designed to provide a good vertical supporting with this freight container 10, can also be with following method to the bigger vertical support ability of freight container increase.Consult Fig. 9, there is a hollow structure in the bent angle portion of this freight container, it can enter (by taking off corresponding foot member 22) from the below so that expose its internal capacity, then, can with one independently support column 85 insert from the below and be retained in the internal capacity by foot member 22 is resetted.After installing like this, the top of this support column 85 is bearing in its bottom of downside that stacks recess 80 and then rests on the bent angle interior upper surface partly of foot member 22.Therefore, put on bent angle structure that any load on the concave surface 82 can not only be by freight container and can also be passed to foot member 22 and be delivered on the supporting mass of following freight container below by being nested with up freight container by support column 85.

Although above disclose some most preferred embodiments of the present invention comprehensively and intactly, can adopt other possible structure and equivalents as required.For example, although above-mentioned stack jut 78 and stack recess 80 be described as and will be positioned at exactly on the bent angle of container 10 top, other position also is fine.Figure 10 and Figure 11 show stack jut in addition two also be suitable position.Be appreciated that, the selection of position is the whole load that are stacked on the freight container of top vertically can be transmitted this requirement substantially by the reinforced column part of freight container by whether to be determined, and whether just in time to be positioned at the bent angle of freight container partly irrelevant with these posts parts.(during alternative location) can be in freight container 10 top at this moment, and corresponding going up forms corresponding recess.In addition, although only show a part of anterior 12 among the figure, and be described as and have only the front portion that breather hole 26 is arranged, these holes can be arranged on other wall portion 14,16,18 and bottom wall portion 20, perhaps do not establish for one, and this depends on the requirement of application-specific.Therefore, foregoing description should not be used for limiting the present invention with illustrating, and the present invention is limited to the appended claims.

Claims (13)

1, a kind of bulk container, it comprises the forward and backward and both sides in order to the tank-volumes that form a tool a plurality of bent angle portion integrally formed with a bottom wall portion; A plurality ofly stack jut and cooresponding with it a plurality of recess that stacks that forms in top bent angle portion downwards from what described bent angle part was extended; So that stack two freight containers by the jut that stacks that recess holds the top freight container that stacks of below freight container, and basically fully the bent angle by the below freight container partly transmit vertical load.

2, freight container as claimed in claim 1 is characterized in that, the exterior boundary that described jut has one and one exterior boundary that stacks recess to extend jointly.

3, freight container as claimed in claim 1, it further comprises an inner flange of extending along the upper interior of each several part, it is characterized in that described each recess ends on the aspect that is higher than described inner flange.

4, freight container as claimed in claim 1, it is characterized in that, described each wall portions is strengthened the column part and is coupled together in each corner of contiguous described freight container by having the hollow in-to-in, and the upper end of described each column part ends at the downside of respective recess so that an independently vertical tension member can be inserted the supporting power that described hollow inside provides bigger post.

5, freight container as claimed in claim 1 is characterized in that, each described sidewall sections is equipped with a foot member independently in its bottom; The described jut that stacks comprises a part of described foot member.

6, the bulk container of the volume that increased of a kind of tool, described bulk container comprises: integrally formed forming the forward and backward and both sides of freight container volume with a bottom wall portion, described each one couples together in the corner of described freight container by the reinforcement column part of the wall portion that the inside sky that partly converges with tank wall is arranged opens; The wall portions that described tank wall portion opens from described inner sky stretches out.

7, freight container as claimed in claim 6 is characterized in that, described bottom wall portion is downward convergent and import the lower end of tank wall part from its center along outward direction.

8, a kind of have the volume of increase and a bulk container of vertical stacking ability, described freight container comprises: integrally formed forming the forward and backward and both sides of a freight container volume with a bottom wall portion, described each one couples together in the corner of described bulk container by the reinforcement column part of the wall portion that the inside sky that converges with the tank wall face portion is arranged opens; Described tank wall part stretches out from the described wall portions of opening with sky; A plurality ofly stack jut and a plurality of with it cooresponding the stack recess that be formed at each bent angle top from what column part was extended downwards, so that when piling up two freight containers, the bent angle of finishing basically by the below freight container transmits vertical load.

9, freight container as claimed in claim 8 is characterized in that, described jut has a cardinal principle and the common exterior boundary that extends of the exterior boundary of described recess.

10, freight container as claimed in claim 8, it further comprises an inner flange of extending along the upper interior of described each several part, it is characterized in that described each recess ends at one and is higher than on the aspect of described inner flange.

11, freight container as claimed in claim 8 is characterized in that, the uprights of described reinforcement is arranged with a hollow inside, and each its upper end of column part ends under the corresponding recess.

12, freight container as claimed in claim 8 is characterized in that, described bottom wall portion along outward direction from mind-set wherein under convergent and meet at the lower end of tank wall part.

13, freight container as claimed in claim 8 is characterized in that, each described sidepiece is provided with a foot member independently in its bottom, and the described jut that stacks comprises a part of described foot member.

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