CN2934014Y - Horizontally telescopic low-bed semi-trailer and its frame structure - Google Patents

Abstract

The utility model relates to a transverse telescopic low flat semitrailer and the vehicle frame structure. The frame structure comprises at least two bottom longitudinal beams and a plurality of bottom cross beams that connect the two bottom longitudinal beams. Every bottom cross beam comprises a major cross beam and two extended cross beams. The inner ends of the two extended cross beams are detachably connected with the two major cross beam ends separately; the outer ends of the two extended cross beams are fixed on the two bottom longitudinal beams separately. The utility model forms a telescopic cross beam assembly by combining the major cross beam and extended cross beams. The low flat semitrailer vehicle frame width can be changed according to different requirements to change vehicle function. Goods of different sizes (diameters and widths) can be transported with only one vehicle, so low flat semitrailer transportation goods sources are enlarged, and transportation efficiency is promoted.

Description

Horizontally telescopic low-bed semi-trailer and its frame structure

technical field

The utility model relates to an engineering vehicle, in particular to a low-bed semi-trailer.

Background technique

A semi-trailer is a commonly used and typical engineering vehicle. A semi-trailer can be divided into a van-type semi-trailer and a flat-bed semi-trailer according to whether it has a compartment.

Flatbed semi-trailers are usually used to transport larger volumes of goods or ordinary non-bulk goods. With the development needs of the transportation industry, there have been low-bed semi-trailers used to transport non-detachable special large cargo (such as large tanks, etc.). Referring to Fig. 1, the platform portion at the rear of the vehicle frame 1 of the low-flat semi-trailer sinks more than the front traction portion, and the height of the whole vehicle drops after the tank body 4 is loaded, which is conducive to transportation; the front of the vehicle frame 1 of the low-flat semi-trailer The traction part is connected with the headstock 2; if the tank body 4 is longer, you can choose to use a longer vehicle frame 1, or as shown in Figure 1, cooperate with the auxiliary trailer 3. Of course, other devices such as wheels 5 are also installed on the vehicle frame 1 .

However, due to the different sizes (diameter or width) of tanks or other non-detachable goods to be transported, the existing low-bed semi-trailers all use fixed frames, that is, each frame can only transport one Therefore, the transportation supply of existing low-bed semi-trailers is limited, and the transportation efficiency is low.

In summary, the above-mentioned existing low-bed semi-trailer obviously has inconvenience and defects in actual use, and it is necessary to improve it.

Contents of the invention

In order to solve the problems existing in the above-mentioned prior art, the purpose of this utility model is to provide a low-bed semi-trailer that can be stretched laterally, and the frame width of the low-bed semi-trailer can be changed according to needs, thereby improving the function of the vehicle. The vehicles transport goods of different specifications (different diameters and widths).

In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

A frame structure of a horizontally expandable low-bed semi-trailer, the frame comprising:

at least two bottom stringers; and

A plurality of bottom beams connected between two bottom longitudinal beams, each bottom beam includes at least one main beam and two extension beams, the inner ends of the two extension beams are respectively detachably connected to the two ends of the main beam , the outer ends of the two extended beams are respectively fixedly connected with the two bottom longitudinal beams.

In the preferred solution of the present utility model, the main beam is provided with a plurality of installation holes, and the inner end of the expansion beam is also matched with a plurality of installation holes, and the pins are set through the installation holes on the main beam and the expansion beam. Mounting holes on the top, the main beam and the extension beam are fixed into one.

The main beam is a cylinder, and the extension beam is also a cylinder. The inner dimension of the main beam matches the outer dimension of the extension beam. The side wall of the main beam is provided with a plurality of installation holes, and the inner end of the corresponding side wall of the expansion beam is also provided with a plurality of installation holes in a matching and opposite manner, and the pins are passed through the installation holes on the main beam and the expansion beam The mounting holes are used to fix the main beam and the extension beam into one.

The outer end of the extended beam is welded or formed integrally with the bottom longitudinal beam.

A horizontally telescopic low-bed semi-trailer, the frame of the low-bed semi-trailer includes:

at least two bottom stringers; and

A plurality of bottom beams connected between two bottom longitudinal beams, each bottom beam includes at least one main beam and two extension beams, the inner ends of the two extension beams are respectively detachably connected to the two ends of the main beam , the outer ends of the two extended beams are respectively fixedly connected with the two bottom longitudinal beams.

In the preferred solution of the present utility model, the main beam is provided with a plurality of installation holes, and the inner end of the expansion beam is also matched with a plurality of installation holes, and the pins are set through the installation holes on the main beam and the expansion beam. Mounting holes on the top, the main beam and the extension beam are fixed into one.

The main beam is a cylinder, and the extension beam is also a cylinder. The inner dimension of the main beam matches the outer dimension of the extension beam. The side wall of the main beam is provided with a plurality of installation holes, and the inner end of the corresponding side wall of the expansion beam is also provided with a plurality of installation holes in a matching and opposite manner, and the pins are passed through the installation holes on the main beam and the expansion beam The mounting holes are used to fix the main beam and the extension beam into one.

The outer end of the extended beam is welded or formed integrally with the bottom longitudinal beam.

The laterally telescopic low-bed semi-trailer and its frame structure of the utility model adopts the main beam and the extended beam to form a telescopic beam, so that the width of the frame of the low-bed semi-trailer can be changed according to needs, and the function of the vehicle can be improved. Realize the transportation of goods with different specifications (different diameters and widths) with one vehicle, expand the transportation source of low-bed semi-trailers, and improve transportation efficiency.

Description of drawings

The technical solution and other beneficial effects of the utility model will be apparent through the detailed description of the specific implementation of the utility model in conjunction with the accompanying drawings.

In the attached picture,

Fig. 1 is the schematic diagram of existing low flat semi-trailer transport tank body;

Fig. 2 is the plane view of the low flat semi-trailer of the present utility model, is to observe along the A-A line corresponding to Fig. 1;

Fig. 2A is the plane view of the low-bed semi-trailer of the present invention, and the observation projection direction of Fig. 2 is the same as that of Fig. 2, and the pins connecting the main beam and the expansion beam are omitted in the figure;

Figure 2B is a schematic cross-sectional view of B-B of Figure 2A;

FIG. 2C is an exploded schematic diagram of FIG. 2A , in which the pins connecting the main beam and the extension beam are omitted.

The labels in the figure are:

1 frame

11 Main beam 111 Mounting hole

12 Extended Beam 121 Mounting Hole

13 bottom stringer

2 front

3 auxiliary trailers

4 transported tanks

5 wheels

6 axles

Detailed ways

In order to further understand the features and technical contents of the present utility model, please refer to the following detailed description and accompanying drawings of the present utility model. However, the accompanying drawings are provided for reference and illustration only, and are not intended to limit the present utility model.

As shown in Figure 2 to Figure 2C, the vehicle frame 1 of the horizontally telescopic low-bed semi-trailer of the present invention includes: two bottom longitudinal beams 13 and multiple bottom cross beams connected between the two bottom longitudinal beams 13; as follows "Inside" and "outside" are relative to the longitudinal centerline (not shown in the figure) of vehicle frame 1;

The bottom beam includes a main beam 11 and two expansion beams 12; the main beam 11 is a square cylinder, and the expansion beam 12 is also a square cylinder. The two ends of the crossbeam 11 are fitted on the inner ends of the two extended crossbeams 12 respectively, and the size relationship between the main crossbeam 11 and the extended crossbeam 12 can also be interchanged, that is, the inner ends of the extended crossbeams 12 are fitted on the ends of the main crossbeam 11 Above; the two side walls of the main beam 11 are provided with a plurality of installation holes 111, and the inner ends of the corresponding two side walls of the expansion beam 12 are also matched and facing to be provided with a plurality of installation holes 121, and the pins or screws ( (omitted and not shown in the figure) is set through the installation hole 111 on the main beam 11 and the installation hole 121 on the expansion beam 12, and the main beam 11 and the expansion beam 12 are fixed into one body, and the inner ends of the two expansion beams 12 The two ends of the main beam 11 are detachably connected respectively; the outer ends of the two extended beams 12 are respectively welded or integrally formed with the two bottom longitudinal beams 13 .

On the vehicle frame 1 of the low-bed semi-trailer of the present utility model, the extended crossbeam 12 and the main crossbeam 11 which are integrally connected with the bottom longitudinal beam 13 adopt pins to form a detachable fixed connection, so that after the pins are pulled out, the The extended beam 12 is translated outwards based on the longitudinal center line. When the vehicle frame 1 is adjusted to the required size, the mounting hole 121 of the expanded beam 12 is aligned with the mounting hole 111 on the main beam 11 and fixed by inserting a pin. Then the two bottom longitudinal beams 13 are symmetrically translated to the outside with the longitudinal centerline as the reference, increasing the width of the vehicle frame.

In order to cooperate with the vehicle frame structure of the present utility model, the axle 6 of the wheel 5 is cut off from the middle, and is respectively fixed on two bottom longitudinal beams 13, so that when the vehicle frame 1 is stretched, the axle 6 can also move along with the inside and outside, which can improve Stability of loaded objects.

The vehicle frame structure design of the low-bed semi-trailer of the utility model is simple and ingenious, economical and practical, and can achieve the multi-purpose effect of one vehicle.

The telescopic frame structure of the utility model can also be applied to other suitable vehicle chassis.

It can be known from technical knowledge that the utility model can be realized through other implementations without departing from its spirit or essential features. Accordingly, the above-disclosed embodiments are, in all respects, illustrative and not exclusive. All changes within the scope of the utility model or within the range equivalent to the utility model are included in the utility model.

Claims (10)

1. A frame structure of a horizontally telescopic low-bed semi-trailer, characterized in that the frame includes: at least two bottom stringers; and A plurality of bottom beams connected between the two bottom longitudinal beams, each bottom beam includes at least one main beam and two expansion beams, the inner ends of the two expansion beams are respectively in contact with the two ends of the main beam In the dismantled connection, the outer ends of the two extended beams are respectively fixedly connected with the two bottom longitudinal beams. 2. The frame structure of the horizontally expandable low-bed semi-trailer according to claim 1, wherein the main beam is provided with a plurality of installation holes, and the inner end of the expansion beam also matches A plurality of installation holes are arranged oppositely, and pins are passed through the installation holes on the main beam and the installation holes on the expansion beam, and the main beam and the expansion beam are fixedly integrated. 3. The frame structure of a laterally expandable low-bed semi-trailer according to claim 1, wherein the main beam is a cylindrical body, the expansion beam is also a cylindrical body, and the main beam The inner size of the main beam matches the outer size of the extended beam, and the two ends of the main beam are fitted on the inner end of the expanded beam and fixed into one body. 4. The frame structure of the horizontally expandable low-bed semi-trailer according to claim 1, wherein a plurality of mounting holes are provided on the side wall of the main beam, and the corresponding extension beams The inner end of the side wall is also matched with a plurality of installation holes facing each other, and the pins are passed through the installation holes on the main beam and the installation holes on the expansion beam, and the main beam and the expansion beam are fixed into one . 5. The frame structure of a laterally expandable low-bed semi-trailer according to any one of claims 1 to 4, wherein the outer end of the expanded beam is welded to the bottom longitudinal beam. One-piece or one-piece molding. 6. A horizontally telescopic low-bed semi-trailer, characterized in that the frame of the low-bed semi-trailer includes: at least two bottom stringers; and A plurality of bottom beams connected between the two bottom longitudinal beams, each bottom beam includes at least one main beam and two expansion beams, the inner ends of the two expansion beams are respectively in contact with the two ends of the main beam In the dismantled connection, the outer ends of the two extended beams are respectively fixedly connected with the two bottom longitudinal beams. 7. The horizontally telescopic low-bed semi-trailer according to claim 6, wherein the main beam is provided with a plurality of installation holes, and the inner end of the expansion beam is also provided in a matching and facing manner. There are a plurality of installation holes, and the pins are passed through the installation holes on the main crossbeam and the installation holes on the extension crossbeam, so that the main crossbeam and the extension crossbeam are fixed into one body. 8. The horizontally telescopic low-bed semi-trailer according to claim 6, wherein the main beam is a square cylinder, the expansion beam is also a cylinder, and the inner circumference of the main beam is Cooperating with the peripheral dimensions of the extended beam, the two ends of the main beam are fitted on the inner end of the expanded beam and fixed into one body. 9. The laterally expandable low-bed semi-trailer according to claim 6, wherein a plurality of installation holes are provided on the side wall of the main beam, and the inner side walls of the corresponding side walls of the expansion beam The ends are also provided with a plurality of mounting holes matched and facing each other, and pins are passed through the mounting holes on the main beam and the mounting holes on the extended beam, so that the main beam and the expanded beam are fixed into one body. 10. The laterally expandable low-bed semi-trailer according to any one of claims 6 to 9, characterized in that the outer end of the expansion beam is welded or integrally formed with the bottom longitudinal beam .

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