Lightweight semitrailer frame

Abstract

The utility model relates to the technical field of semitrailer frames, and provides a lightweight semitrailer frame which is characterized in that a frame main body comprises two longitudinal beams and a plurality of cross beams, and a fixing plate is arranged at the upper end of the front part of the frame main body; inserting grooves are formed in the left side and the right side of the rear part of the frame main body; the additional plate is detachably arranged at the upper end of the rear portion of the frame body, supporting rails are arranged on the left side and the right side of the lower end of the additional plate, inserting parts are arranged on the lower portions of the supporting rails, and the inserting parts on the two sides are inserted into the inserting grooves in the two sides respectively and connected in a front-back sliding mode. The two sleeves are arranged at the left end and the right end of the additional plate respectively and connected with the rear portion of the fixing plate in an inserted mode. Supporting plates are arranged on the left and right sides of the lower end of the additional plate, one end of each supporting plate is fixedly connected with the side wall of the concave part of the inserting part, and the other end of each supporting plate is fixedly connected with the sleeve. According to the technical scheme, the problems that in the prior art, a semitrailer is poor in installation selectivity and cannot meet various transportation requirements in a low-energy-consumption state are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailer frames, in particular to a lightweight semi-trailer frame. Background Art

[0002] In the process of economic development, both production and sales involve the transportation of goods. Among the existing transportation equipment, semi-trailers are generally used for long-distance transportation of large goods. The types of semi-trailers include flatbed, fence and box types, which are set according to different transportation needs.

[0003] At present, in order to reduce transportation energy consumption, lightweight semi-trailer frames are generally used. The weight of the frame body is reduced by methods such as material upgrading and punching and removing materials. However, in actual use, semi-trailers are not always fully loaded with goods and are not always used for long-distance transportation. When it is impossible to fully load the goods in a short time, for example, when only half of the space of the semi-trailer is used, most of the weight of the semi-trailer's own structure is used as excess load, resulting in increased energy consumption. That is, in the prior art, the installation selectivity of the semi-trailer is poor and it cannot meet a variety of transportation needs under low energy consumption conditions. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a lightweight semi-trailer frame in view of the above-mentioned technical deficiencies, which solves the problem in the prior art that the installation selectivity of the semi-trailer is poor and cannot meet various transportation needs under low energy consumption conditions.

[0005] The technical solution adopted by the utility model is: to provide a lightweight semi-trailer frame, including a frame body, the frame body includes two longitudinal beams and a plurality of cross beams, a fixing plate is arranged at the upper end of the front part of the frame body; both left and right sides of the rear part of the frame body are provided with plug-in slots, and the plug-in slots are located on the longitudinal beams; and further includes:

[0006] An additional plate is detachably arranged at the upper end of the rear part of the frame body, and the lower end of the additional plate has support rails on both sides, and the lower part of the support rail has a plug-in portion, and the vertical cross-section of the plug-in portion is a "]" shape, and the plug-in portions on both sides are respectively plugged with the plug-in grooves on both sides and are slidably connected forward and backward;

[0007] There are two sleeves, which are respectively arranged at the left and right ends of the additional plate, and the sleeves are plug-connected with the rear part of the fixed plate;

[0008] There are several support plates, and the support plates are arranged on the left and right sides of the lower end of the additional plate. One end of the support plate is fixedly connected to the side wall of the concave part of the plug-in part, and the other end is fixedly connected to the sleeve.

[0009] Further optimization of this technical solution also includes:

[0010] There are two plug-in rods, which are respectively plugged and arranged on the left and right sides of the rear part of the fixing plate, the sleeve is plugged and connected with the rear part of the plug-in rod, and the sleeve is plugged and connected with the rear part of the fixing plate through the plug-in rod;

[0011] The middle door panel frame is vertically arranged, and there are two of them, and the two middle door panel frames are respectively arranged on the plug-in rods on both sides;

[0012] A front door panel frame is vertically arranged, and has two front door panel frames, and the two front door panel frames are respectively arranged on the left and right sides of the front part of the fixed plate;

[0013] Wherein, the space between the middle door panel frame and the front door panel frame is used for installing the side door panel.

[0014] Further optimization of this technical solution also includes:

[0015] A rear door panel frame is vertically arranged, and has two rear door panel frames, and the two rear door panel frames are respectively arranged on the left and right sides of the rear part of the additional panel;

[0016] The middle door panel frame and the rear door panel frame are used for installing the side door panels, and the space between the two rear door panel frames is used for installing the rear door panel.

[0017] Further optimization of this technical solution also includes:

[0018] There are a plurality of threaded tubes, and the two longitudinal beams are each provided with a plurality of the threaded tubes along the front-rear direction;

[0019] The connecting bolt comprises a threaded portion and a connecting portion, wherein the threaded portion is threadably connected to the threaded pipe, and the connecting portion comprises a connecting hole.

[0020] To further optimize the technical solution, the additional plate is provided with a plurality of through holes, the through holes correspond one-to-one to the positions of the threaded tubes, the diameter of the through holes is larger than the outer diameter of the threaded portion, and the connecting portion is located above the additional plate or below the longitudinal beam.

[0021] To further optimize the technical solution, the connecting bolt also has a compression ring, which is located between the threaded portion and the connecting portion, and the diameter of the compression ring is larger than the outer diameter of the threaded portion.

[0022] To further optimize the technical solution, both the front and rear sides of the plug-in rod have threaded holes, and further include:

[0023] A locking bolt is threadedly connected to the threaded hole and is used to connect the plug rod and the fixing plate or to connect the plug rod and the sleeve.

[0024] The beneficial effects of the utility model are:

[0025] 1. The additional plate can be detachably installed at the rear of the frame body, that is, when the cargo only occupies part of the space of the semi-trailer, or when the transportation of the cargo does not require the support of the flat structure such as the additional plate, the additional plate and other structures attached to the additional plate can be removed, which greatly reduces the total weight of the semi-trailer frame and reduces energy consumption.

[0026] 2. When the semi-trailer is used for short-distance transportation within the factory, or when it does not affect safety on the road, the support rail and the plug-in slot are connected by sliding forward and backward, and the interval between the additional plate and the fixed plate can be adjusted, so that the load-bearing area in the front and rear directions can be increased. It can be used to carry goods that are too long and increase the types and methods of cargo transportation (it is worth noting that the center of gravity of the cargo here does not affect the overall stability. It does not mean overweight, nor does it include situations where the center of gravity of the cargo is seriously shifted backwards and affects safety).

[0027] 3. The additional plate is a detachable structure. Through the plug-in connection between the sleeve and the fixed plate, the support plate supports the left and right sides of the additional plate, and the plug-in connection between the support rail and the plug-in groove, the strength of the additional plate can be greatly improved, the stability of the detachable structure can be enhanced, the transportation safety can be improved, and the cargo supporting capacity requirements can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the utility model;

[0029] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at the center;

[0030] Figure 3 This is a schematic diagram of the installation structure of the additional plate of the utility model;

[0031] Figure 4 for Figure 3 A schematic diagram of the partially enlarged structure at B in the middle;

[0032] Figure 5 for Figure 1 Schematic diagram of the bottom viewing angle structure in the current state;

[0033] Figure 6 This is a schematic diagram of the structure of the additional board of the utility model in use state;

[0034] Figure 7 This is a schematic diagram of the structure of the utility model after removing the additional plate;

[0035] Figure 8 This is a schematic diagram of the additional plate structure of the utility model;

[0036] Fig. 9 This is a schematic diagram of the plug-in rod structure of the utility model;

[0037] Explanation of marks in the figure: 1. Frame body; 101. Longitudinal beam; 1011. Plug-in groove; 102. Cross beam; 103. Fixing plate; 104. Front door panel frame; 2. Additional plate; 201. Support rail; 202. Plug-in part; 203. Sleeve; 204. Support plate; 205. Rear door panel frame; 206. Through hole; 3. Plug-in rod; 301. Middle door panel frame; 302. Threaded hole; 4. Threaded pipe; 5. Connecting bolt; 501. Threaded part; 502. Pressing ring; 503. Connecting part; 6. Locking bolt. DETAILED DESCRIPTION

[0038] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0039] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0040] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0041] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0042] The connection between the frame body 1 and the wheels and the connection with the front of the vehicle are all existing technologies, which will not be described in detail herein, and the attached drawings do not show the structure.

[0043] like Figure 1-9As shown, a lightweight semi-trailer frame includes a frame body 1, the frame body 1 includes two longitudinal beams 101 and a plurality of cross beams 102, a fixing plate 103 is arranged at the upper front end of the frame body 1; both left and right sides of the rear of the frame body 1 have plug-in slots 1011, and the plug-in slots 1011 are located on the longitudinal beams 101; and further includes: an additional plate 2, which is detachably arranged at the upper rear end of the frame body 1, and both left and right sides of the lower end of the additional plate 2 have support rails 201, and the lower part of the support rails 201 has a plug-in portion 202, and the plug-in portion 2 02 The vertical cross-section is a "]" shape, and the plug-in parts 202 on both sides are respectively plugged into the plug-in grooves 1011 on both sides and are slidably connected front and back; there are two sleeves 203, and the two sleeves 203 are respectively arranged at the left and right ends of the additional plate 2, and the sleeves 203 are plugged and connected with the rear part of the fixed plate 103; there are several support plates 204, and support plates 204 are arranged on both sides of the lower end of the additional plate 2, one end of the support plate 204 is fixedly connected to the side wall of the concave part of the plug-in part 202, and the other end is fixedly connected to the sleeve 203.

[0044] During use, when the cargo is fully loaded and a flat plate structure is required as a bottom support, the additional plate 2 is slid forward from the rear of the frame body 1 for installation, and the support rail 201 slides in the plug-in slot 1011. The support rail 201 can support the plug-in slot 1011, thereby increasing the supporting strength of the rear part of the longitudinal beam 101, and at the same time plays a role in positioning the additional plate 2. The front end of the additional plate 2 can abut against the rear end of the fixed plate 103, or there can be a certain interval between the fixed plate 103 to lengthen the front and rear distance of the cargo load (a flat plate support can be set in the middle interval position as needed to provide bottom support for the cargo).

[0045] When the cargo is fully loaded but does not need the additional plate 2 for support at the bottom, the longitudinal beam 101 and the cross beam 102 of the frame body 1 can support and position the cargo; or when the cargo is small and the space above the fixed plate 103 is sufficient for transportation, the additional plate 2 can be removed to reduce the weight.

[0046] The front-to-back length of the fixing plate 103 may be substantially the same as the front-to-back length of the additional plate 2 .

[0047] The side opposite to the two longitudinal beams 101 is the inner side. The vertical cross section of the plug-in portion 202 is a "]" shape. The plug-in slot 1011 is located on the outer side of the longitudinal beam 101. The plug-in portion 202 can be plugged into the plug-in slot 1011 and can slide forward and backward. The plug-in portion 202 can support the longitudinal beam 101 in the plug-in slot 1011 to enhance the strength. The plug-in slot 1011 itself can be provided with a reinforcing rib structure to improve its own strength. The side of the plug-in portion 202 is in contact with multiple reinforcing ribs to reduce the difficulty of matching. Further, the plug-in matching can be made easier through structures such as bevels and chamfers.

[0048] The vertical cross-section of the plug-in portion 202 is a “]” shape, which is a concave structure. The vertical side wall is the side wall of the concave part. One end of the support plate 204 is located inside the plug-in portion 202 and can be used as a supporting structure inside the plug-in portion 202 to increase the forwardness of the plug-in portion 202. At the same time, the upper end of the support plate 204 can support the side of the additional plate 2 to increase the strength of the additional plate 2.

[0049] Further, it also includes: a plug-in rod 3, which has two, and the two plug-in rods 3 are respectively plugged and arranged on the left and right sides of the rear of the fixed plate 103, the sleeve 203 is plugged and connected with the rear of the plug-in rod 3, and the sleeve 203 is plugged and connected with the rear of the fixed plate 103 through the plug-in rod 3; a middle door panel frame 301, which is vertically arranged, has two, and the two middle door panel frames 301 are respectively arranged on the plug-in rods 3 on both sides; a front door panel frame 104, which is vertically arranged, has two, and the two front door panel frames 104 are respectively arranged on the left and right sides of the front of the fixed plate 103; wherein, the middle door panel frame 301 and the front door panel frame 104 are used to install the side door panel. It also includes: a rear door panel frame 205, which is vertically arranged, has two, and the two rear door panel frames 205 are respectively arranged on the left and right sides of the rear of the additional plate 2; wherein, the middle door panel frame 301 and the rear door panel frame 205 are used to install the side door panel, and the space between the two rear door panel frames 205 is used to install the rear door panel.

[0050] When in use, the sleeve 203 is plugged and connected with the fixed rod through the plug rod 3. The plug rod 3 is an intermediate connector, and the plug structure makes the plug rod 3 also a detachable part, which can be removed when not needed, leaving only the fixed plate 103 for use as a flat plate. The middle door panel frame 301 and the front door panel can be used as boundary limiters to limit the movement of goods. The door panels can be installed without the need for installation. With the help of existing connection structures such as ropes, the positioning of the goods can be strengthened. Of course, the middle door panel frame 301 and the front door panel frame 104 on the same side on the left and right can be used to install side door panels, and a side door panel is set on both the left and right sides to better limit the position of the goods. Of course, the door panel structure can also be installed between the two middle door panel frames 301.

[0051] When in use, a rear door panel frame 205 is provided on the additional plate 2, and side door panels and a rear door panel can be added to form a fence-type or box-type structure. Door panels and other structures can be provided between the two front door panel frames 104 as required.

[0052] The door panel structure of the side door panel and the rear door panel can adopt the existing solution of flipping up and down, and a connecting structure can be set at an appropriate position on the front door panel frame 104, the middle door panel frame 301, and the rear door panel frame 205, as well as on the sleeve 203 and other structures. The connecting structure is mainly a hinged connection and a door lock, which is the existing technology.

[0053] Furthermore, it also includes: a plurality of threaded tubes 4, and the two longitudinal beams 101 are provided with a plurality of threaded tubes 4 along the front-rear direction; a connecting bolt 5, which has a threaded portion 501 and a connecting portion 503, the threaded portion 501 is threadedly connected to the threaded tube 4, and the connecting portion 503 has a connecting hole. The additional plate 2 has a plurality of through holes 206, and the positions of the through holes 206 and the threaded tubes 4 correspond one by one, and the diameter of the through holes 206 is larger than the outer diameter of the threaded portion 501, and the connecting portion 503 is located above the additional plate 2 or below the longitudinal beam 101. The connecting bolt 5 also has a pressure ring 502, which is located between the threaded portion 501 and the connecting portion 503, and the diameter of the pressure ring 502 is larger than the outer diameter of the threaded portion 501.

[0054] When in use, the connecting part 503 can be used to connect and fix the end of the rope, etc., for bundling and positioning goods. The connecting part 503 can be a ring-shaped shape such as a triangle or a ring, or can be a C-shaped shape with an opening, a hook shape, etc. The connecting hole is located in the middle of the connecting part 503, and can be used for connecting the end of the rope, etc.

[0055] The connecting bolt 5 is threadedly connected to the threaded tube 4, and can tighten the rope by moving up and down, thereby improving the rope fixing ability.

[0056] The connecting bolt 5 can be used when the additional plate 2 is provided on the frame body 1 or when the additional plate 2 is removed.

[0057] When the connection portion 503 is located above the additional plate 2, the threaded portion 501 passes through the through hole 206 and is connected to the threaded tube 4, which can fix the additional plate 2. At the same time, the pressure ring 502 can abut against the additional plate 2 to provide a pressurized positioning force, such as pressing some plate structures between the pressure ring 502 and the additional plate 2 for positioning.

[0058] The threaded tubes 4 can be arranged at equal intervals.

[0059] Furthermore, both the front and rear sides of the plug-in rod 3 have threaded holes 302 , and also include: a locking bolt 6 threadedly connected to the threaded hole 302 for connecting the plug-in rod 3 and the fixing plate 103 or for connecting the plug-in rod 3 and the sleeve 203 .

[0060] When in use, after the plug-in connection between the plug-in rod 3 and the fixing plate 103 and between the plug-in rod 3 and the sleeve 203, the connection can be further strengthened by means of structures such as a plug pin. Threaded holes 302 can also be provided on both the front and rear sides of the plug-in rod 3, with the front threaded hole 302 located inside the fixing plate 103 and the rear threaded hole 302 located inside the sleeve 203. The locking bolt 6 passes through the side wall of the fixing plate 103 or the side wall of the sleeve 203 and then connects with the threaded hole 302 for locking.

[0061] The plug-in rod 3 can also be a hollow tubular structure to reduce weight. The plug-in rod 3 and the middle door panel frame 301 form a "T" shape.

[0062] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A lightweight semi-trailer frame, comprising a frame body (1), wherein the frame body (1) comprises two longitudinal beams (101) and a plurality of transverse beams (102), and a fixing plate (103) is provided at the upper front end of the frame body (1); characterized in that: The left and right sides of the rear part of the frame body (1) are both provided with plug-in slots (1011), and the plug-in slots (1011) are located on the longitudinal beam (101); and further comprising: An additional plate (2) is detachably arranged at the upper rear end of the frame body (1); the lower end of the additional plate (2) is provided with support rails (201) on both left and right sides; the lower part of the support rail (201) is provided with a plug-in portion (202); the plug-in portion (202) has a vertical cross-section of a "]" shape; the plug-in portions (202) on both sides are respectively plugged into the plug-in slots (1011) on both sides and are connected by forward and backward sliding; There are two sleeves (203), the two sleeves (203) are respectively arranged at the left and right ends of the additional plate (2), and the sleeves (203) are plug-connected to the rear of the fixed plate (103); There are a plurality of support plates (204), each of which is provided on the left and right sides of the lower end of the additional plate (2), one end of the support plate (204) is fixedly connected to the side wall of the concave portion of the plug-in portion (202), and the other end is fixedly connected to the sleeve (203).

2. A lightweight semi-trailer frame according to claim 1, characterized in that: Also includes: The plug-in rods (3) are provided with two, the two plug-in rods (3) are respectively plugged and arranged on the left and right sides of the rear part of the fixing plate (103), the sleeve (203) is plug-connected with the rear part of the plug-in rod (3), and the sleeve (203) is plug-connected with the rear part of the fixing plate (103) through the plug-in rod (3); A middle door panel frame (301) is vertically arranged, and has two middle door panel frames (301), wherein the two middle door panel frames (301) are respectively arranged on the plug-in rods (3) on both sides; A front door panel frame (104) is vertically arranged, and has two front door panel frames (104), wherein the two front door panel frames (104) are respectively arranged on the left and right sides of the front part of the fixing plate (103); Wherein, the space between the middle door panel frame (301) and the front door panel frame (104) is used for installing the side door panel.

3. A lightweight semi-trailer frame according to claim 2, characterized in that: Also includes: A rear door panel frame (205) is vertically arranged, and has two rear door panel frames (205), and the two rear door panel frames (205) are respectively arranged on the left and right sides of the rear part of the additional plate (2); The middle door panel frame (301) and the rear door panel frame (205) are used to install the side door panels, and the space between the two rear door panel frames (205) is used to install the rear door panel.

4. A lightweight semi-trailer frame according to claim 1, characterized in that: Also includes: There are a plurality of threaded tubes (4), and the two longitudinal beams (101) are each provided with a plurality of the threaded tubes (4) along the front-rear direction; The connecting bolt (5) comprises a threaded portion (501) and a connecting portion (503), wherein the threaded portion (501) is threadedly connected to the threaded tube (4), and the connecting portion (503) comprises a connecting hole.

5. A lightweight semi-trailer frame according to claim 4, characterized in that: The additional plate (2) has a plurality of through holes (206), the through holes (206) corresponding to the positions of the threaded tubes (4) one by one, the diameter of the through holes (206) being larger than the outer diameter of the threaded portion (501), and the connecting portion (503) being located above the additional plate (2) or below the longitudinal beam (101).

6. A lightweight semi-trailer frame according to claim 5, characterized in that: The connecting bolt (5) further comprises a pressure ring (502), wherein the pressure ring (502) is located between the threaded portion (501) and the connecting portion (503), and the diameter of the pressure ring (502) is greater than the outer diameter of the threaded portion (501).

7. A lightweight semi-trailer frame according to claim 2, characterized in that: The plug-in rod (3) has threaded holes (302) on both the front and rear sides, and further comprises: A locking bolt (6) is threadedly connected to the threaded hole (302) and is used to connect the plug-in rod (3) and the fixing plate (103) or to connect the plug-in rod (3) and the sleeve (203).

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