Girder structure of semitrailer

Abstract

The semitrailer girder structure comprises two sets of supporting wing plates, two sets of supporting connecting plates are symmetrically installed on the left sides and the right sides of the bottom ends of the two sets of supporting wing plates, and two sets of installing frame plates are symmetrically installed on the front side and the rear side between the two sets of supporting connecting plates. A bearing plate is arranged at the positions, located on the inner sides of the two sets of supporting wing plates, of the top ends of the two sets of mounting frame plates, multiple sets of supporting top columns are evenly mounted at the bottom end of the bearing plate, multiple sets of mounting grooves corresponding to the multiple sets of supporting top columns are formed in the inner top ends of the two sets of mounting frame plates, and mounting column pieces are arranged in the multiple sets of mounting grooves; the vibration reduction and pressure bearing device has the advantages that vibration is reduced, using stability is improved, meanwhile, abrasion is reduced, the service life is prolonged, convenience of disassembly, assembly and maintenance is improved through a multi-group type fastening and disassembling structure, and the vibration reduction and pressure bearing device is simple in structure, convenient to use and high in practicability. And the overall use effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, in particular to a semi-trailer beam structure. Background Art

[0002] A semitrailer is a trailer with its axle placed behind the center of gravity of the vehicle (when the vehicle is evenly loaded) and equipped with a coupling device that can transmit horizontal and vertical forces to the tractor. It is a heavy-duty transport vehicle connected to the semitrailer head through a traction pin, and plays a certain role in promoting the existing logistics organization form.

[0003] After searching, the Chinese patent authorization number CN201521108284.2 discloses a ribbed semi-trailer beam, including two wing plates, the two wing plates are parallel to each other, a vertical web is arranged between the middle parts of the two wing plates, and ribs are arranged on the web. The ribbed semi-trailer beam of the utility model has a simple structure, light weight, high bearing strength, saves production and use costs, and meets people's use needs.

[0004] The ribbed semi-trailer beam in the above patent has the following shortcomings: first, the beam structure in the above patent carries and reduces weight through the load-bearing capacity of the ribs, but its load-bearing capacity is limited. The ribs are prone to wear and tear after long-term use, which reduces the overall service life. The vibration of various components when the semi-trailer moves also affects the stability of transportation. Secondly, the vibration caused by the direct bearing force when the semi-trailer is in operation and moving is easy to damage the beam. Thirdly, the integrated setting of the ribs, wing plates and webs is not convenient for maintenance and replacement, which reduces the overall use effect.

[0005] Therefore, we propose a semi-trailer beam structure to solve the above problems. Utility Model Content

[0006] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0007] To this end, the technical solution adopted in this utility model is:

[0008] A semi-trailer beam structure comprises two groups of supporting wing plates, two groups of supporting connecting plates are symmetrically installed on the left and right sides of the bottom ends of the two groups of supporting wing plates, two groups of mounting frame plates are symmetrically installed on the front and rear sides between the two groups of supporting connecting plates, the top ends of the two groups of mounting frame plates are located at the inner sides of the two groups of supporting wing plates and load-bearing plates are arranged, and multiple groups of supporting top columns are evenly installed on the bottom ends of the load-bearing plates, and multiple groups of mounting grooves are provided in the inner top ends of the two groups of mounting frame plates corresponding to the multiple groups of supporting top columns, and mounting column members are arranged inside the multiple groups of mounting grooves, and load-bearing springs are sleeved on the outer sides of the mounting column members, and extrusion pads are connected to one side of the front and rear ends of the load-bearing plate close to the two groups of supporting wing plates, and the bottom extending end of the mounting column member is located at the bottom end of the mounting frame plate and is threadedly sleeved with a fixing locking block.

[0009] In a preferred example, the present invention can be further configured as follows:

[0010] By adopting the above technical solution, a telescopic groove is opened inside the supporting top column, and a protective sleeve pad is embedded and installed on the inner side surface of the telescopic groove.

[0011] In a preferred example, the present invention can be further configured as follows:

[0012] By adopting the above technical solution, the top end of the mounting column is slidably embedded in the telescopic groove, and the outer side surface of the mounting column is in close contact with the inner surface of the protective sleeve pad.

[0013] In a preferred example, the present invention can be further configured as follows:

[0014] By adopting the above technical solution, the outer side surface of the bottom extension of the supporting top column is slidably connected to the inner side surface of the mounting groove, and the extrusion support pad and one side of the two groups of supporting wing plates are in contact with each other.

[0015] In a preferred example, the present invention can be further configured as follows:

[0016] By adopting the above technical solution, the fixed locking block is embedded and installed in the inner bottom end of the mounting frame plate, and the outer side surface of the mounting column is located at the bottom of the load-bearing spring and is sleeved with a support plate.

[0017] In a preferred example, the present invention can be further configured as follows:

[0018] By adopting the above technical solution, the bottom end surface of the support plate is close to the inner bottom end of the installation groove.

[0019] In a preferred example, the present invention can be further configured as follows:

[0020] By adopting the above technical solution, multiple groups of weight-reducing holes are respectively provided on the two groups of mounting frame plates and the two groups of supporting connecting plates, which are penetrated front to back and left to right.

[0021] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0022] 1. In the utility model, by arranging supporting top columns, load-bearing springs and extrusion support pads, when in use, when the load-bearing plate is squeezed, the multiple supporting top columns at the bottom slide inside the multiple groups of mounting grooves opened on the tops of the two groups of mounting frame plates, and are supported longitudinally by the internal load-bearing springs, including the elastic protection of the extrusion support pads on both sides of the load-bearing plate. This multiple elastic embedded installation combined elastic load-bearing structure not only reduces vibration and improves stability in use, but also reduces wear on various components and improves service life.

[0023] 2. In the utility model, a fixed locking block is provided. When in use, the fixed locking block is threadedly fastened to the mounting column, so that after loosening the fixed locking block, the mounting column and the load-bearing spring can be taken out, and the worn parts can be maintained and replaced, thereby improving the convenience of disassembly and maintenance and improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view structural schematic diagram of an embodiment of the utility model;

[0025] Figure 2 It is a side structural schematic diagram of an embodiment of the utility model;

[0026] Figure 3 This is a front cross-sectional structural schematic diagram of an embodiment of the utility model;

[0027] Figure 4 This is a schematic structural diagram of location A of an embodiment of the utility model.

[0028] Reference numerals:

[0029] 1. Support wing plate; 2. Mounting frame plate; 3. Support connecting plate; 4. Weight reduction hole; 5. Fixed lock block; 6. Load-bearing plate; 7. Support top column; 8. Extrusion support pad; 9. Mounting slot; 10. Mounting column; 11. Load-bearing spring; 12. Telescopic slot; 13. Protective sleeve pad; 14. Support plate. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0031] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0032] A semitrailer beam structure provided by some embodiments of the utility model will be described below in conjunction with the accompanying drawings.

[0033] Embodiment 1:

[0034] Combination Figure 1-Figure 4 As shown, the utility model provides a semi-trailer beam structure,

[0035] Specifically, it includes two groups of supporting wing plates 1, two groups of supporting connecting plates 3 are symmetrically installed on the left and right sides of the bottom ends of the two groups of supporting wing plates 1, two groups of mounting frame plates 2 are symmetrically installed on the front and rear sides between the two groups of supporting connecting plates 3, the top ends of the two groups of mounting frame plates 2 are located at the inner sides of the two groups of supporting wing plates 1 and are provided with load-bearing plates 6, and multiple groups of supporting top columns 7 are evenly installed on the bottom ends of the load-bearing plates 6, and multiple groups of mounting grooves 9 are provided at the inner top ends of the two groups of mounting frame plates 2 corresponding to the multiple groups of supporting top columns 7, and the multiple groups of mounting grooves 9 are provided with mounting column members 10 inside, and the outer sides of the mounting column members 10 are sleeved with load-bearing springs 11, and the front and rear ends of the load-bearing plates 6 are connected to a side close to the two groups of supporting wing plates 1 with an extrusion pad 8, the bottom extending end of the mounting column member 10 is located at the bottom end of the mounting frame plate 2 and is threadedly sleeved with a fixed locking block 5, and the support top column 7 is provided with a telescopic groove inside 12. A protective sleeve pad 13 is embedded and installed on the inner side of the expansion slot 12. The protective sleeve pad 13 is mainly used to enhance the wear resistance of the mounting column 10 and the supporting top column 7 when they expand and contract and wear each other. The top end of the mounting column 10 is slidably embedded in the inside of the expansion slot 12, and the outer side of the mounting column 10 is fitted and abutted against the inner surface of the protective sleeve pad 13. The outer side surface of the bottom end extension of the supporting top column 7 is slidably connected to the inner side surface of the mounting slot 9, and the extrusion support pad 8 is fitted with one side of the two groups of supporting wing plates 1. The use of the above-mentioned components, especially when the load-bearing plate 6 is squeezed, the multiple supporting top columns 7 at the bottom squeeze the load-bearing springs 11 in the mounting slot 9, through their longitudinal elastic support effect, including the elastic protection of the extrusion support pads 8 on both sides of the load-bearing plate 6, reduces vibration and improves stability in use, while reducing wear and increasing service life.

[0036] Embodiment 2:

[0037] Combination Figure 2 and Figure 4 As shown, based on the first embodiment,

[0038] Specifically, the fixed locking block 5 is embedded in the inner bottom end of the mounting frame plate 2, and the outer side surface of the mounting column 10 is located at the bottom of the load-bearing spring 11 and is sleeved with a support plate 14. The support plate 14 is mainly used to support and limit the load-bearing spring 11, and it is also convenient for disassembly and assembly of the load-bearing spring 11 after taking it out. The bottom end surface of the support plate 14 is close to the inner bottom end of the mounting groove 9. The use of the above-mentioned components and the components in the first embodiment makes it possible to loosen the fixed locking block 5, remove the mounting column 10 and the load-bearing spring 11, and maintain and replace the parts that may be worn, making disassembly and assembly more convenient and improving the use effect.

[0039] Combination Figure 1-Figure 3 As shown, in the above embodiment,

[0040] Specifically, a plurality of weight-reducing holes 4 are respectively provided on the two groups of mounting frame plates 2 and the two groups of supporting connecting plates 3 in a front-to-back and a left-to-right manner, and the weight-reducing holes 4 mainly play a role in weight reduction.

[0041] The working principle and use process of the utility model are as follows: first, when in use, the beam structure is first installed as a whole on the semi-trailer. When the cargo transport box to be transported is placed on the load-bearing plate 6, during the driving operation, when the load-bearing plate 6 is squeezed, the multiple supporting top columns 7 at the bottom slide up and down inside the multiple groups of mounting grooves 9 opened on the tops of the two groups of mounting frame plates 2, and the load-bearing springs 11 sleeved on the outside of the mounting column members 10 in the mounting grooves 9 are longitudinally elastically supported, including the elastic protection of the extrusion support pads 8 on both sides of the load-bearing plate 6. This multiple elastic embedded installation combined elastic load-bearing structure not only reduces vibration and improves the stability of use, but also reduces the wear of various components and improves the service life. Secondly, when in use, after long-term use, due to the threaded fastening connection setting of the fixed locking block 5 and the mounting column member 10, after loosening the fixed locking block 5, the mounting column member 10 and the load-bearing spring 11 can be taken out in turn, and the parts that may be worn can be maintained and replaced, thereby improving the convenience of disassembly and maintenance and improving the use effect.

[0042] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A semi-trailer beam structure, comprising two groups of support wing plates (1), two groups of support connecting plates (3) are symmetrically installed on the left and right sides of the bottom ends of the two groups of support wing plates (1), and two groups of mounting frame plates (2) are symmetrically installed on the front and rear sides between the two groups of support connecting plates (3), characterized in that: The top ends of the two groups of mounting frames (2) are located inside the two groups of supporting wing plates (1) and are provided with a load-bearing plate (6). The bottom ends of the load-bearing plates (6) are evenly provided with multiple groups of supporting top columns (7). The inner top ends of the two groups of mounting frames (2) are provided with multiple groups of mounting grooves (9) corresponding to the multiple groups of supporting top columns (7). The insides of the multiple groups of mounting grooves (9) are provided with mounting column members (10). The outer sides of the mounting column members (10) are sleeved with load-bearing springs (11). The front and rear ends of the load-bearing plates (6) are close to the two groups of supporting wing plates (1) and are connected with extrusion pads (8). The bottom extension end of the mounting column member (10) is located at the bottom end of the mounting frame plate (2) and is threadedly sleeved with a fixing lock block (5).

2. A semitrailer beam structure according to claim 1, characterized in that: A telescopic slot (12) is provided inside the supporting top column (7), and a protective sleeve pad (13) is embedded and installed on the inner side surface of the telescopic slot (12).

3. A semitrailer beam structure according to claim 1, characterized in that: The top end of the mounting column (10) is slidably embedded in the telescopic groove (12), and the outer side surface of the mounting column (10) is in close contact with the inner surface of the protective sleeve pad (13).

4. A semitrailer beam structure according to claim 1, characterized in that: The outer side surface of the bottom extension of the supporting top column (7) is slidably connected to the inner side surface of the mounting groove (9), and the extrusion support pad (8) is in contact with one side of the two groups of supporting wing plates (1).

5. A semitrailer beam structure according to claim 1, characterized in that: The fixed locking block (5) is embedded and installed in the inner bottom end of the mounting frame plate (2), and the outer side surface of the mounting column (10) is located at the bottom of the load-bearing spring (11) and is sleeved with a support plate (14).

6. A semitrailer beam structure according to claim 5, characterized in that: The bottom end surface of the support plate (14) is close to the inner bottom end of the installation groove (9).

7. A semitrailer beam structure according to claim 1, characterized in that: The two groups of mounting frame plates (2) and the two groups of supporting connection plates (3) are provided with a plurality of groups of weight-reducing holes (4) penetrating front to back and left to right, respectively.

Images