Chassis of container
Technical field
The present invention relates to the parts of tun, be specifically related to a kind of Undercarriage structure of freight container.
Background technology
Freight container is as the main tool of international combined transport, from 1,956 50 years of development brought into use so far, be widely used, and along with the continuous reinforcement of international trade contact, freight container traffic become the main means of international combined transport.
The overall configuration of general purpose container is the hexahedron type at present; On concrete structure; As shown in Figure 1; Generally all include the platform chassis 10 that is positioned at bottom half, the front wall 12 that lays respectively at 10 two ends of platform chassis and chamber door 13, be positioned at casing side walls 11, be positioned at the top board 14 at casing top; Be positioned at sidewall 11 and the vertical corner post 15 that is positioned at 10 4 vertex angle parts of platform chassis of front wall 12, and lay respectively at the drift angle spare 16 of 4 bottom corners of casing and the base angle part 16` in bight, 4 bottoms with chamber door 13 junctions.Generally speaking; As shown in Figure 2, in order to satisfy the carriage requirement of goods, on its platform chassis 10, be equipped with the wood covering 17 that is used for bearing goods; Be the inner length of freight container apart from size d between inboard and chamber door 13 inboards of front wall 12 wherein; Distance h between the lower surface of top board 14 and wood covering 17 upper surfaces is the internal height of freight container, and the inner length d of casing and internal height h have determined the measurement capacity of casing, under casing outside dimension unmodified situation; This inner length d and internal height h are big more, and the measurement capacity of casing is big more.
The general freight container that is used for international combined transport; Its oad is defined by iso standard; Here it is usually said iso standard freight container, the Undercarriage structure of this ISO container is as shown in Figure 3, and its vertical two ends are respectively arranged with threshold 130 and front end underbeam 120; Also be arranged with many foundation crossbeam 18 according to the container length direction between this two; Wood covering 17 is overlapped in the medial extremity of threshold 130 and front end underbeam 120, and the middle part is supported by bottom cross beam 18, and threshold 130 and front end underbeam 120 are a bending section with the carrying surface of wood covering 17 overlap joints; The upper surface of this two bending section is concordant with the upper surface of bottom cross beam 18, is connected with iso standard base angle part 16` respectively at the both ends of threshold 130 and front end underbeam 120.Be generally the intensity that guarantees underframe; Consider the saving in material cost simultaneously; It is more intense that bottom cross beam 18 is all done, and makes the upper surface of bottom cross beam 18 be higher than the upper surface of base angle part 16`, thereby the loading height k of platform chassis 10 is greater than the thickness sum of part 16` height in base angle with wood covering 17.Under the limited situation of the height overall of casing, loading height k and the box house height h relation of being inversely proportional to, that is, more greatly then box house height h is more little for the loading height k.
Present stage, because international trade is frequent, the freight container traffic amount sharply increases; People increase transporting container through method in individual, and increase transporting container, direct-vision method be exactly the space that increases internal container; Loading more goods, American-European landlocked some ultra wide super long containers that use, the more general freight container in its inner space is big; The lade amount is more relatively; But its outside dimension does not meet the regulation of iso standard, can't carry out the through transport of box ship.Thereby, how guaranteeing to increase the inside cargo space of its freight container under the freight container outside dimension unmodified situation, become the problem of very paying close attention in the industry.
Summary of the invention
The present invention is intended to overcome the deficiency of prior art, provides a kind of and is guaranteeing that underframe has under the sufficient intensity prerequisite, and the height that can reduce the casing floor uses height to increase box house, thereby improves the chassis of container of freight container delivery efficient.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of chassis of container; Comprise two bottom side beams in its both sides, at its vertical both ends and threshold that is parallel to each other and front end underbeam, be connected in bottom cross beam between said two bottom side beams, be layed in floor on the said bottom cross beam, be fixedly set in the base angle part of said underframe quadripolar corners bottom; The bottom surface of the portion that matches with said base angle part on said floor is not higher than the upper surface of said base angle part; And the distance of the upper surface on said floor part basal surface to said base angle is 80mm-160mm, and the thickness on said floor is 2mm-38mm.
In the chassis of container of the present invention, the basal surface on said floor is concordant with the upper surface of said base angle part, and four vertex angle parts on said floor ride on the upper surface of said four base angle parts.
In the chassis of container of the present invention, the upper surface on said floor is concordant with the upper surface of said base angle part, and said base angle part is provided with the supporting construction that is used to support said floor.
In the chassis of container of the present invention, said floor is a wood covering, and it is 25mm-38mm that this wood covering gets thickness.
In the chassis of container of the present invention, said floor is dull and stereotyped steel floor, and this dull and stereotyped thickness is 2mm-8mm.
In the chassis of container of the present invention, said floor is the corrugated bar floor, and the bottom-to-top-height on this corrugated bar floor is 10mm-35mm.
In the chassis of container of the present invention; The front-end and back-end on said floor ride over respectively on said front end underbeam and the said threshold; Be provided with the supporting part that is used to support said floor on said front end underbeam and the said threshold, the upper surface of said front end underbeam supporting part is concordant with the upper surface of said threshold supporting part.
In the chassis of container of the present invention, the part that said base angle part matches with said floor is provided with notch, and the part that matches with said base angle part on the said floor can be placed in the said notch.
In the chassis of container of the present invention, said underframe also includes near near the goose girder its front end underbeam one end, on the said goose girder on plane and the said floor plane concordant.
In the chassis of container of the present invention, one of them material of said at least threshold, front end underbeam, bottom cross beam, bottom side beams adopts the high strength steel of yield limit greater than 450Mpa.
In the chassis of container of the present invention, one of them material of said at least threshold, front end underbeam, bottom cross beam, bottom side beams, goose girder adopts the high strength steel of yield limit greater than 450Mpa.
In the chassis of container of the present invention, the trade mark of said high strength steel is ZJ700W.
Than prior art; The chassis of container structure that the present invention explained, the bottom surface of portion is not higher than the upper surface of base angle part owing to match with the base angle part in the floor, makes the height on floor be lowered; Thereby increased the internal height of casing, improved the carrying efficient of casing; Simultaneously; Be to guarantee the intensity of the underframe after the floor reduces, threshold, front end underbeam, bottom cross beam etc. one of at least adopt high strength steel, adopt the parts of high strength steel many more in the underframe; The weight of this underframe is compared with the weight of prior art underframe just light more; Thus, also just reduced the deadweight of casing, casing is can cargo-carring cargo quantity just big more.
Description of drawings
Fig. 1 is the structural representation of a kind of freight container in the prior art;
Fig. 2 is the longitudinal profile view of Fig. 1;
Fig. 3 is the Undercarriage structure scheme drawing of freight container shown in Figure 1;
Fig. 4 is the structural representation of an embodiment of the present invention;
Fig. 5 is the longitudinal profile view of Fig. 4;
Fig. 6 is an A partial enlarged drawing among Fig. 4;
Fig. 7 is a B partial enlarged drawing among Fig. 4;
Fig. 8 is the underframe vertex angle part structural representation of the another kind of embodiment of the present invention;
Fig. 9 is a part structural representation in base angle among Fig. 8;
Figure 10 is the another kind of corner fittings structural representation of the present invention;
Figure 11 is the structural representation of another embodiment of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed description:
Embodiment 1:
Like Fig. 4, the chassis of container 3 shown in 5; Comprise the bottom side beams 300 that is positioned at its both sides; Be positioned at the threshold 301 and front end underbeam 302 at underframe two ends; A plurality ofly be parallel to and be arranged between threshold 301 and the front end underbeam 302 bottom cross beam 303 side by side, all be welded with base angle part 361 at the two ends of threshold 301 and the two ends of front end underbeam 302; Above-mentioned bottom side beams 300, bottom cross beam 303, threshold 301, front end underbeam 302 are welded to connect into a frame body, and wood covering 37 is layed on this frame body, and the position, intermediate portion is supported on the top surface of bottom cross beam 303.Threshold 301 inner sides are provided with downwards and the threshold bending section 3011 of wood covering 37 is carried in its upper surface and concordant being used to of the top surface of bottom cross beam 303; Corresponding; In order to guarantee the smooth of container wood floor 37; Front end underbeam 302 medial extremitys are provided with downwards and the front end underbeam bending section 3021 of wood covering 37 is carried in its upper surface face and concordant being used to of bottom cross beam 303 top surfaces, and the two ends of wood covering 37 ride over respectively on front end underbeam bending section 3021 and the threshold bending section 3011.The upper surface of the top surface of bottom cross beam 303, threshold bending section 3011 upper surfaces, front end underbeam bending section 3021 upper surfaces and base angle part 361 is positioned at same plane; That is to say; The loading height S of this underframe 3 equals the height sum of the height and the wood covering 37 of base angle part 361, adopts under the situation of standard back corner fittings at base angle part 361, and the loading of this underframe height S is low with respect to the loading height K (referring to Fig. 3) of ISO container underframe; Thereby; Use the internal height of freight container of this underframe 3 higher than the internal height of ISO container, under guard box external size and inner length unmodified situation, its corresponding cargo bay is also big.
In conjunction with Fig. 5, Fig. 6, shown in Figure 7; Because the length of threshold 301 and front end underbeam 302 is less than the width of wood covering 37; Thereby; Four vertex angle parts of wood covering 37 must exceed the two ends of threshold 301 and front end underbeam 302 on the container width direction, it exceeds part and is overlapped on the upper surface that is connected base angle part 361.
At present; The thickness of wood covering commonly used is 28mm in the industry, allows ± error of 0.5mm, and the thickness of the employed wood covering of some American-European inland container depots can reach 38mm; 42mm is thick even; On the lower freight container of some requirement of strength, the thickness of its wood covering is then correspondingly less, can be about 25mm simultaneously.Thereby the wood ground 37 that present embodiment is explained structurally requires its basal surface concordant with the upper surface of base angle part 361, and its thickness can be 25mm-38mm, and at some in particular cases, its thickness can thicken to 42mm.At this; Consider that general base angle part 261 all adopts the high base angle part of 118mm that meets the freight container iso standard; So, loading height (surface of base angle part 361 is to the height of the floor upper surface) S=118mm+ (25mm-42mm)=143mm-160mm of the underframe that present embodiment is explained.
General general knowledge by the present technique field can be known; Dull and stereotyped steel floor or corrugated bar floor also can be adopted in the floor; The thickness of general dull and stereotyped steel floor is 2mm-8mm, and the thickness on corrugated bar floor is 8mm-35mm, and then its corresponding loading highly is 120mm-126mm and 126mm-153mm.
(surface of base angle part 361 is to the height of floor upper surface for underframe loading height; Referring to Fig. 5 height S) reduction can cause the reduction of whole underframe intensity; For this reason; Adoptable compensatory approach commonly used is the density and/or increase the sectional area of bottom cross beam, bottom side beams, threshold, front end underbeam etc. of arranging that increases bottom cross beam, but these methods all can cause the increase of cost of manufacture and the increase of underframe deadweight.Adopting yield limit to make framing members such as threshold, front end underbeam, bottom cross beam, bottom side beams greater than the high strength steel of 450Mpa is more useful selection; Needs according to underframe intensity; Can adopt the high strength steel of yield limit selectively greater than 450Mpa; Like the trade mark is the high strength steel of ZJ700W, makes said structure spare.Because adopt high strength steel, the sectional dimension of said structure spare can reduce relatively, can reduce the deadweight of whole underframe thus.
Embodiment 2:
Interior outage degree for more effective increase freight container; Reduce the underframe height of freight container; Like Fig. 8, shown in 9, on base angle part 361, be used for offering notch 3611 with the matching part of wood covering 37 overlap joints, the vertex angle part of wood covering 37 can be placed in this notch 3611; The degree of depth of notch 3611 is identical with the thickness of wood covering 37, so that the upper surface of wood covering 37 is concordant with the upper surface of base angle part 361.At this, the purpose of on the part of base angle, offering notch 3611 is to keep the integraty of wood covering 37 structures.See from realizing the purpose that 361 pairs of wood coverings of base angle part 37 are supported; Also can adopt mode shown in figure 10; That is, the inboard periphery of part is provided for the brace table 3612 on brace floor at the base angle, and the upper surface of this brace table 3612 distance of the upper surface of corner fittings 361 on earth equals the thickness of wood covering 37; Its purpose also is to keep the upper surface of wood covering 37 concordant with the upper surface of base angle part 361; In actual use, can know that the vertex angle part of wood covering 37 will correspondingly be offered the breach that is complementary with base angle part inner peripheral structure by the general knowledge in present technique field.Under the upper surface of wood covering 37 situation concordant with the upper surface of base angle part 361; The loading height of this underframe, that is, the basal surface of base angle part 361 is to the height of the upper surface of wood covering 37; Equal the height of base angle part; All adopt at base angle part 261 under the situation of the standard corner fitting that meets the freight container iso standard, it highly is 118mm, i.e. the loading of this underframe highly is 118mm.
General general knowledge by the present technique field can be known; Dull and stereotyped steel floor or corrugated bar floor also can be adopted in the floor; The thickness of general dull and stereotyped steel floor is 2mm-8mm, and the thickness on corrugated bar floor is 8mm-35mm, under the upper surface that guarantees the floor situation concordant with the upper surface of base angle part; Its corresponding loading highly is equal to the height of base angle part, is generally 118mm.
In the present embodiment; The floor is identical with embodiment 1 with the fit system of front end underbeam and threshold; Reach the front end underbeam and be provided with the front end underbeam bending section that is used for load carrying floor, threshold is provided with the threshold bending section that is used for load carrying floor, and the upper surface of this two bending section is concordant.
Description among material that framing member adopted in the present embodiment such as the embodiment 1 at this, no longer elaborates.
Above-mentioned two embodiment have explained the present invention's two kinds of ultimate attainment situation in use, that is, the surface on floor is concordant with base angle part upper surface and floor upper surface is concordant with base angle part upper surface.In actual use, the upper surface on floor can be between above-mentioned two kinds of situation.
Simultaneously, in actual use, length is that 40 feet or length surpass on 40 feet the freight container; Standing on its underframe have goose neck tunnel, is a burnishing surface for guaranteeing floor upper surface, shown in figure 11; Goose girder 38 upper surfaces of goose neck tunnel are concordant with floor upper surface, simultaneously, consider from the intensity of underframe; This goose girder 38 can adopt the high strength steel of yield limit greater than 450Mpa selectively, is the high strength steel of ZJ700W like the trade mark
The above for the person of ordinary skill of the art, can make other various corresponding changes and distortion according to technical scheme of the present invention and technical conceive, and all these changes and distortion all should belong to the protection domain of the accompanying right of the present invention.