CN201154735Y - Telescopic container transport skeleton semi-trailer - Google Patents

Abstract

The utility model discloses a telescopic container transportation skeleton semi-trailer which comprises a front trailer frame, a back trailer frame and a caging device; wherein, a back crossbeam comprises a plurality of bottom crossbeams of the back trailer frame welded at the lower bottom part of a back longitudinal beam and a plurality of upper limiting crossbeams of the back trailer frame welded at the upper part of the back longitudinal beam; the back longitudinal beam, the bottom crossbeams of the back trailer frame and the upper limiting crossbeams of the back trailer frame form a rectangle framework type holding space; an inner trailer frame can slide longitudinally in the rectangle framework type holding space. The semi-trailer of the utility model has the advantages of simple structure, being convenient for mounting and high structure intensity, can be adapted and arranged at the container of 40' or 45' or 48' or 53' by adjusting the self length of the trailer, thus avoiding the defects caused by that a short trailer can not contain a long container or a long trailer contains a short container, thereby really achieving the goal of one trailer with multiple functions.

Description

Telescopic container transport skeleton semi-trailer

technical field

The utility model relates to a telescopic container transport framework semi-trailer.

Background technique

Container transport skeleton semi-trailers are widely used in wharf and road transportation. In recent years, with the rapid growth of global logistics, the use of containers to transport goods has become more and more frequent, which in turn makes the use of skeleton semi-trailers that can easily carry containers more and more more. There are many standard sizes of containers, such as 40' container, 45' container, 48' container and 53' container. For containers of 40' and above 40' (such as 45' containers, 48' containers, 53' containers, etc.), they are all realized by skeleton semi-trailers. At this stage, these semi-trailers can basically only load containers of corresponding length. For example: 40' semi-trailer can only load 40' container due to the limitation of length; if 48' semi-trailer is loaded with 40' container, there will be shortcomings such as unreasonable load distribution, large turning radius, poor passability, and high frame strength requirements, etc. . In this way, customers often purchase several types of semi-trailers due to the need to transport containers of different specifications, and the cost is relatively high, and the storage and switching of semi-trailers is also troublesome. Designing a telescopic semi-trailer that can carry different types of containers without wasting the transport space of the semi-trailer is a research hotspot in this field.

CN101032979 (Chinese Patent Application No. 200710038817.8, publication date 2007.09.12) discloses a retractable container semi-trailer, the semi-trailer is composed of a steel beam frame and wheels formed by a main frame and an auxiliary frame, and the main frame and the auxiliary frame are both It is composed of left and right "I"-shaped channel steels, and interconnected steel beams are arranged between the left and right "I"-shaped channel steels. And the groove bottom of the near front end of the left and right "I" shaped channel steels of the auxiliary frame are respectively provided with limit pin holes. The sub-frame is assembled and fixed with the limit pin holes near the front end and near the front end of the main frame and the limit steel pins through the limit pin holes near the front end to change the effective load-carrying length of the semi-trailer to meet the needs of containers of different specifications. Loading and transportation requirements can not only effectively avoid the trouble of frequent replacement of semi-trailers and the need to store semi-trailers of different specifications on site due to the lack of versatility of existing container semi-trailers, but also avoid the need to use long semi-trailers to load small-sized containers. It is easy to cause excessive tire wear and damage to the road or field. It can be seen from this patent application that the telescopic container semi-trailer is more suitable for carrying smaller-sized containers, such as 20' containers or 40' containers, but for larger-sized containers such as containers above 40', it has low strength, Shortcomings such as limited expansion and contraction; another problem of another patent application is that the upper plane of the main frame and the sub-frame must be at the same level, which causes the connection (sliding part) of the main frame and the sub-frame to have sufficient strength. In terms of the beam, this connection is bound to be unstable; another problem is that the width of the main frame and the sub-frame are inconsistent, which will cause the load-bearing surface of the front part of the container to be wide and the load-bearing surface of the rear part to be narrow, causing the problem of uneven force.

US20050057059 (published on May 17, 2005) discloses a length-adjustable underframe of a semi-trailer, as shown in Figures 1, 2 and 3, which can be reduced in length to be suitable for a conventional 53-foot shipping container internal. The chassis consists of two main sections, a front gooseneck integration and a rear frame integration, each comprising a pair of spatially separated side rails with "I" beam intersections. The rear frame integrated side rails have "U" shaped channel bars welded to their "I" beams to form slots in the rear frame integrated front. The slot is long enough to slide the gooseneck integration into the rear frame integration and reduce the overall length of the frame by 24-36 feet so that the frame can fit inside a conventional 53 foot shipping container. Specifically, the chassis includes (a) a gooseneck frame section for load bearing, which has: (i) a pair of spaced apart side rails, each having an "I" referred to as an inactive section and a movable section a beam intersection, said inactive portion has a first overall width, said active portion has a second overall width less than said first overall width, (ii) said pair of spaced side rails have a width defined by said inactive The total length determined by the front end of the part and the rear end of the movable part, (iii) a plurality of cross beams intersected with the spaced side rails, which are defined as the load-bearing base part; (b) the load-bearing rear frame integration part, It has: (i) a pair of spaced apart side main rails each having an "I" shaped intersection, a movable end and an inactive end, The total length defined by the end of the movable part, (ii) a plurality of cross beams arranged across the spatially separated main rails, which define the load-bearing base part, and (iii) the " U"-shaped grooves and respectively forming inwardly directed protrusions, each of said grooves starts at the movable end of said second frame part and extends a certain distance to said second frame part, said grooves are suitable for accommodating said (c) a locking mechanism capable of securing the first frame portion to the second frame portion; and (d) a stop plate for preventing the first frame portion from moving from the The second frame part is separated; (e) the movable part of the first frame part can slide on the protrusion formed in the groove of the second frame part, so as to reduce the stretching of the first frame part, The total length between the locked length and the retracted length allows the adjustable-length underframe to fit inside a conventional shipping container. The shortcoming of this U.S. patent is that the height of the intermediate connecting part that realizes the telescopic function is consistent with the height of the integration of the front gooseneck and the rear frame, that is, the upper top surface of the intermediate connection is integrated with the upper surface of the front gooseneck and the rear frame. The top surface is even. In order to achieve this effect of the upper top surface being even, it is necessary to set up a more complicated structure, that is, to set a "U"-shaped groove as shown in Figure 3 to achieve relative sliding between the two I-shaped shapes. This additional "U"-shaped groove setting will inevitably reduce the structural strength of the semi-trailer, and the installation is very complicated, requiring large-scale mechanical cooperation to complete the installation.

The common disadvantage of the semi-trailers disclosed in CN101032979 and US20050057059 is that the telescopic operation of the two semi-trailers requires the cooperation of special large-scale mechanical equipment, and the telescopic installation is complicated, time-consuming and inconvenient to use.

Therefore, it is still an urgent problem to be solved by those skilled in the art to design a telescopic container transport frame semi-trailer with simple structure, high structural strength, simple assembly, and suitable for transporting longer and shorter containers.

Utility model content

The problem to be solved by the utility model is to overcome the shortcomings of the existing semi-trailer, and provide a simple structure, high structural strength, simple assembly, telescopic adjustment of vehicle length, suitable for transporting longer and shorter containers such as 40' or 45' Or telescopic container transport skeleton semi-trailer for 48' or 53' container.

The utility model provides a telescopic container transport framework semi-trailer, comprising:

a) The front frame for load-bearing and traction, including: a gooseneck traction part arranged at the front and a front load-bearing part arranged at the rear, and the gooseneck traction part and the front load-bearing part respectively include left and right sides I-shaped front longitudinal beam and several front beams connecting the left and right front longitudinal beams;

b) The rear vehicle frame used for load-bearing and walking, which includes a traveling wheel frame and a rear load-bearing portion arranged thereon; a number of rear beams;

c) The telescopic inner frame includes inner longitudinal beams arranged on the left and right sides and several inner beams connecting the left and right inner longitudinal beams; the front part of the inner frame is inserted into the rear end of the front frame and welded firmly , the rear part is longitudinally slidably connected to the rear frame; and

d) The limit device used to fix the relative position of the inner frame and the rear frame, which includes limit pins arranged on the left and right inner longitudinal beams at the rear of the inner frame and limit pins arranged on the left and right rear longitudinal beams Hole;

Wherein: the rear beam includes several rear frame bottom beams welded to the lower bottom of the rear longitudinal beam and several rear frame upper limit beams welded to the upper part of the rear longitudinal beam, the rear longitudinal beam, rear frame bottom beam and rear The three upper limit beams of the vehicle frame form a rectangular frame-type accommodation space; the inner vehicle frame can slide longitudinally in the rectangular frame-type accommodation space.

According to the telescopic container transport frame semi-trailer further provided by the present invention, wherein: the outer dimensions of the inner frame in the front and rear view directions are basically smaller than the three of the rear longitudinal beam, the bottom beam of the rear frame and the upper limit beam of the rear frame The inner dimension of the rectangular frame is formed in the front and rear viewing directions, and can slide longitudinally in the rectangular frame.

According to the telescopic container transport framework semi-trailer further provided by the utility model, wherein: the upper limit beam of the rear frame is welded to the opposite inner sides of the upper wings of the left and right rear longitudinal beams.

According to the telescopic container transport skeleton semi-trailer further provided by the present invention, the front frame further includes: a support leg arranged under the joint of the gooseneck traction part and the front bearing part, and a leg arranged under the gooseneck traction part The traction pin seat and/or the front load beam arranged at the front end of the gooseneck traction part.

According to the telescopic container transport frame semi-trailer further provided by the utility model, wherein: the front beam, the inner beam and the rear beam of the front frame are respectively welded in parallel to the front longitudinal beam, the inner longitudinal beam and the rear beam at predetermined intervals. stringer.

According to the telescopic container transport frame semi-trailer further provided by the utility model, wherein: the center distance between the left and right front longitudinal beams is equal to the center distance between the left and right rear longitudinal beams, and the front bearing part The formed front bearing surface is flush with the rear bearing surface formed by the rear bearing part in the horizontal direction.

According to the telescopic container transport framework semi-trailer further provided by the present invention, there are multiple pairs of limit holes on the rear longitudinal beam, and the front and rear bearing surfaces formed by the cooperation of limit pins and limit holes The longitudinal length matches containers of different lengths.

According to the telescopic container transport skeleton semi-trailer further provided by the utility model, wherein: the rear end of the rear frame is also provided with a rear load beam.

The telescopic structure is simple in operation and convenient in telescoping. During telescopic operation, first fix the rear frame, pull out the limit pin on the inner frame, and use a tractor or other forklift to drive the front frame and the inner frame to move forward or backward. When moving to the preset position, stop moving, and insert the limit pin on the inner frame into the limit hole sleeve on the rear frame, so that the front frame, rear frame and inner frame can form a A whole that can be loaded with containers.

The telescopic container transport frame semi-trailer of the utility model has simple structure, convenient installation, high structural strength, and can fit 40' or 45' or 48' or 53' containers by adjusting the length of the vehicle itself, avoiding short The car cannot be loaded with long boxes, and the shortcomings brought about by the short box installed in long cars, so as to truly achieve the purpose of one car with multiple uses.

Description of drawings

Fig. 1 is a schematic side view of a telescopic container transport semi-trailer in the prior art.

Fig. 2 is a schematic top view of the telescopic container transport semi-trailer shown in Fig. 1 .

Fig. 3 is a schematic diagram of the "U"-shaped groove structure of the telescopic container transport semi-trailer shown in Fig. 1 .

Fig. 4 is a schematic side view of the telescopic container transport frame semi-trailer of the present invention in an extended state.

Fig. 5 is a schematic top view of the telescopic container transport frame semi-trailer of the present invention in an extended state.

Fig. 6 is a schematic side view of the telescopic container transport framework semi-trailer of the present invention in a contracted state.

Fig. 7 is a schematic top view of the telescopic container transport framework semi-trailer of the present invention in a contracted state.

Among them, the main drawings and symbols are explained as follows:

1. Front frame 2. Rear frame 3. Inner frame

11. Gooseneck traction part 21. Traveling wheel frame 31. Inner longitudinal beam

12. Front bearing part 22. Rear bearing part 32. Inner beam

13. Front longitudinal beam 23. Rear longitudinal beam 33. Limit pin

14. Front beam 24. Rear beam

15. Outrigger 241. Bottom beam of rear frame

16. Tractor pin seat 242. Upper limit beam of rear frame

17. Front load beam 25. Rear load beam

26. Limiting hole

Detailed ways

The utility model will be further described below through specific embodiments with reference to the accompanying drawings, the purpose of which is to facilitate the understanding of the utility model, and is not intended to limit the utility model.

The idea of the utility model is that by improving the telescopic container transport skeleton semi-trailer, it has a simple structure, convenient installation, high structural strength, and can accommodate various containers by adjusting the length of the vehicle itself.

As shown in Figures 4 to 7, Figure 4 is a schematic side view of the telescopic container transport frame semi-trailer of the present invention in an extended state, and Figure 5 is a telescopic container transport frame semi-trailer of the present utility model in an extended state Fig. 6 is a schematic side view of the telescopic container transport frame semi-trailer of the present invention in a contracted state, and Fig. 7 is a top view of the telescopic container transport frame semi-trailer of the present invention in a contracted state.

The utility model provides a telescopic container transport frame semi-trailer, comprising: a) a front frame 1 for load bearing and traction, including: a gooseneck traction part 11 arranged at the front and a front load bearing arranged at the rear; part 12, the gooseneck traction part 11 and the front bearing part 12 respectively include I-shaped front longitudinal beams 13 arranged on the left and right sides and several front cross beams 14 connecting the left and right front longitudinal beams 13; b) for bearing and walking The rear frame 2 includes a traveling wheel frame 21 and a rear bearing portion 22 provided thereon; the rear bearing portion 22 includes I-shaped rear longitudinal beams 23 arranged on the left and right sides and several rear beams connecting the left and right rear longitudinal beams 23 Crossbeam 24; c) the inner vehicle frame 3 that is used for expansion and contraction, comprises inner longitudinal beam 31 that is arranged on left and right sides and several inner crossbeams 32 that connect left and right inner longitudinal beams 31; The front part of described inner vehicle frame 3 is inserted into the front The rear end of the vehicle frame 1 is welded firmly, and the rear part is connected to the rear vehicle frame 2 in a longitudinally slidable manner; and d) a limiting device for fixing the relative position of the inner vehicle frame 3 and the rear vehicle frame 2, which includes setting The limit pins 33 on the left and right inner longitudinal beams 31 at the rear of the inner frame 3 and the limit sleeve holes 26 arranged on the left and right rear longitudinal beams 23; Some rear frame bottom beams 241 at the lower bottom and some rear frame upper limit beams 242 welded to the rear longitudinal beam 23 top, the rear longitudinal beam 23, rear frame bottom beam 241 and rear frame upper limit beam 242 are three The latter forms a rectangular frame-type storage space; the inner frame 3 can slide longitudinally in the rectangular frame-type storage space. The above-mentioned rear longitudinal beam 23, the bottom beam 241 of the rear frame and the upper limit beam 242 of the rear frame form a rectangular frame in the front and rear viewing direction; the outer size of the inner frame 3 in the front and rear viewing direction is smaller than the inner size of the rectangular frame , and can slide vertically within the rectangular frame.

A further embodiment of the telescopic container transport skeleton semi-trailer of the present utility model is that the outer dimensions of the inner frame 3 in the front and rear view directions are substantially smaller than the rear longitudinal beam 23, the rear frame bottom beam 241 and the rear frame upper limit The three crossbeams 242 form the inner dimension of the rectangular frame in the front and rear viewing directions, and can slide longitudinally in the rectangular frame. The meaning of said "substantially less than" is that the inner frame 3 can be freely inserted into the rectangular frame, and the height of the frame is not obviously greater than the height of the inner frame 3 so that the inner frame 3 will not shake up and down in the rectangular frame, and The frame width is not obviously greater than the width of the inner frame 3 and thus the inner frame 3 will not shake left and right in the rectangular frame.

A further embodiment of the telescopic container transport frame semi-trailer of the present utility model is that the upper limit beam 242 of the rear frame is welded to the relative inner sides of the upper wings of the left and right rear longitudinal beams 23 .

A further embodiment of the telescopic container transport frame semi-trailer of the present utility model is that the front frame 1 further includes a leg 15 arranged below the joint of the gooseneck traction part 11 and the front bearing part 12 .

A further embodiment of the telescopic container transport frame semi-trailer of the present invention is that the front frame 1 further includes a traction pin seat 16 arranged below the gooseneck traction portion 11 .

A further embodiment of the telescopic container transport frame semi-trailer of the present utility model is that the front frame 1 further includes a front load-carrying beam 17 arranged at the front end of the gooseneck traction portion 11 .

A further embodiment of the telescopic container transport frame semi-trailer of the present utility model is that the front beam 14, the inner beam 32 and the rear beam 24 of the front frame 1 are respectively welded in parallel to the front longitudinal beam 13, The inner side member 31 and the rear side member 23 .

In the embodiment of the telescopic container transport framework semi-trailer of the present utility model, the center distance between the left and right front longitudinal beams 13 is equal to the center distance between the left and right rear longitudinal beams 23, and the front The front bearing surface formed by the bearing part 12 is flush with the rear bearing surface formed by the rear bearing part 22 in the horizontal direction. The result that the center distance of the two front longitudinal beams is equal to the center distance of the two rear longitudinal beams is that the forces on the left and right sides of the front and rear bearing surfaces are consistent. The result that the front load-bearing surface and the rear load-bearing surface are flush in the horizontal direction is to make the entire load-bearing surface of the entire semi-trailer uniform.

A further embodiment of the telescopic container transport skeleton semi-trailer of the present utility model is that there are multiple pairs of limit bushing holes 26 on the rear longitudinal beam 23, and the front stopper holes 26 formed by the cooperation of the limit pins 33 and the limit bushing holes 26 , The longitudinal length of the rear bearing surface matches the containers of different lengths. In this embodiment, the bearing surface provided after being limited by the spacer hole 26 can be used to transport 40' or 45' or 48' or 53' containers respectively.

A further embodiment of the telescopic container transport framework semi-trailer of the present invention is that the rear end of the rear frame 2 is also provided with a rear load-bearing crossbeam 25 . The rear load beam 25 can strengthen the loading strength of the container.

For the specific assembly, as shown in Figures 4 to 7, in the stretched state, the inner frame 3 is pulled out from the rear frame and fixed by the limit pin 33. At this time, the overall bearing surface is long and suitable for transportation. Longer containers. In the contracted state, the inner frame 3 is inserted into the rear frame and fixed by the limit pin 33. At this time, the overall bearing surface is short, which is suitable for transporting shorter containers. The telescopic structure is easy to operate and convenient to expand and contract.

Through the detailed description of the specific embodiments above, it is hoped that the utility model can be described more clearly, but the preferred specific embodiments disclosed above are not used to limit the utility model. The claims of the present utility model should be interpreted in the broadest way based on the above description, so as to cover all possible changes and arrangements with equivalents.

Claims (8)

1, a kind of telescopic freight container traffic skeleton superimposed trailer comprises:

A) be used for the front vehicle frame of load-bearing and traction, comprise: be arranged at anterior gooseneck tractive unit and be arranged at the preceding supporting part at rear portion, some front cross rails of two front side members about described gooseneck tractive unit and preceding supporting part comprise I-shape front side member that the left and right sides is provided with respectively and be connected;

B) be used for the back vehicle frame of load-bearing and walking, comprise that walking wheel carrier and its go up the back supporting part of setting; Some after cross members of two floor side members about described back supporting part comprises I-shape floor side member that the left and right sides is provided with and is connected;

C) be used to the interior vehicle frame that stretches, comprise the interior beam that the left and right sides is provided with and be connected about the some interior crossbeam of two interior beams; The front portion of vehicle frame is inserted into the rear end and the firm welding of front vehicle frame in described, and the rear portion is being connected of can longitudinally sliding with the back vehicle frame; With

D) be used for fixing in the inhibiting device of vehicle frame and back vehicle frame relative position, comprise in being arranged at the locating dowel pin on two interior beams about the vehicle frame rear portion and be arranged at about spacing trepanning on two floor side members;

It is characterized in that: described after cross member comprises the some backs vehicle frame bottom cross beam that is welded in the floor side member lower bottom part and is welded in some backs vehicle frame upper limit crossbeam on floor side member top that described floor side member, back vehicle frame bottom cross beam and back vehicle frame upper limit crossbeam three form rectangle frame posture receiving space; Vehicle frame can longitudinally slide in this rectangle frame posture receiving space in described.

2, superimposed trailer according to claim 1, it is characterized in that: vehicle frame forms the inside dimension of rectangular frame less than floor side member, back vehicle frame bottom cross beam and back vehicle frame upper limit crossbeam three at the front and back line of vision basically at the outside dimension of front and back line of vision in described, and can longitudinally slide in this rectangular frame.

3, superimposed trailer according to claim 2 is characterized in that: the relative inner of two floor side member upper limbs about described back vehicle frame upper limit crossbeam is welded in.

4, superimposed trailer according to claim 3 is characterized in that: described front vehicle frame also comprises: be arranged at gooseneck tractive unit and preceding supporting part junction below supporting leg, be arranged at the traction key seat of gooseneck tractive unit below and/or be arranged at the preceding carrying crossbeam of gooseneck tractive unit leading section.

5, according to each described superimposed trailer of claim 1-4, it is characterized in that: the front cross rail of described front vehicle frame, interior crossbeam and after cross member are respectively with parallel front side member, interior beam and the floor side member of being welded in of predetermined space distance.

6, according to each described superimposed trailer of claim 1-4, it is characterized in that: the width between centers about described between two front side members with described about width between centers between two floor side members equate that and the preceding carrying surface that supporting part forms before described is concordant in the horizontal direction with the back carrying surface of described back supporting part formation.

7, according to each described superimposed trailer of claim 1-4, it is characterized in that: it is how right that the spacing trepanning on the described floor side member is provided with, and locating dowel pin cooperates the forward and backward carrying surface longitudinal length of formation and the freight container of different length to match with spacing trepanning.

8, according to each described superimposed trailer of claim 1-4, it is characterized in that: the tail end of described back vehicle frame also is provided with back carrying crossbeam.

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