Longitudinal beam structure of semitrailer

Abstract

The utility model discloses a semitrailer longitudinal beam structure and relates to the technical field of semitrailers, the semitrailer longitudinal beam structure comprises a longitudinal beam body, auxiliary frames which are evenly distributed are fixedly installed on the two sides of the longitudinal beam body, supporting frames are fixedly installed below the auxiliary frames, connecting pieces are fixedly installed at one ends of the bottom faces of the auxiliary frames, and the connecting pieces are fixedly installed on the longitudinal beam body. One end of the top face of each supporting frame is arranged on the surface of the corresponding connecting piece in a sliding and sleeving mode, first positioning pieces are fixedly installed at the ends of the two sides of each auxiliary frame, and one auxiliary frame and one supporting frame form a group and are evenly installed on the two sides of the longitudinal beam body respectively. And when the carriage descends, under the cooperation of the buffer springs and the buffer pads in the buffer assemblies on the two sides of each auxiliary frame, the carriage is assisted to descend, the impact force of the carriage on the longitudinal beam body is reduced, and the service life of the longitudinal beam body is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of semi-trailer technology, specifically to a semi-trailer longitudinal beam structure. Background Art

[0002] As the core pillar of the vehicle structure, the longitudinal beam of a semi-trailer plays a vital role. Extending along the longitudinal direction of the vehicle, the longitudinal beam, together with the crossbeam and other structural components, forms the vehicle's skeleton. In the event of a collision, the longitudinal beam acts as a safety barrier.

[0003] However, in existing semi-trailer trucks, the longitudinal beams support the cargo box only when it is installed, resulting in a large load on the longitudinal beams. Over time, this can easily lead to damage and breakage of the longitudinal beams. Secondly, when the cargo box, which can be raised and lowered, is lowered, it can cause a large impact force when it hits the longitudinal beam, resulting in damage to the longitudinal beam and reducing its service life. Utility Model Content

[0004] To address the problem that existing semi-trailer longitudinal beams rely solely on a single beam for support during trailer installation, which can easily lead to beam damage and breakage, thus reducing the lifespan of the beam, this invention aims to provide a new semi-trailer longitudinal beam structure.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: a semi-trailer longitudinal beam structure, including a longitudinal beam body, with evenly distributed auxiliary frames fixedly installed on both sides of the longitudinal beam body, a support frame fixedly installed below the auxiliary frames, a connector fixedly installed at one end of the bottom surface of the auxiliary frames, and one end of the top surface of the support frame slidably sleeved on the surface of the connector. First positioning components are fixedly installed at both ends of the auxiliary frames, and second positioning components are fixedly installed at both ends of the support frame. Bolts are inserted into both the first and second positioning components, and nuts are threaded onto the surfaces of the bolts. The bolts and nuts respectively cooperate with the first and second positioning components. Buffer components are fixedly installed on both sides of the auxiliary frames.

[0006] Preferably, the buffer assembly includes a fixed frame, and three buffer springs are fixedly installed on the bottom surface of the fixed frame. A lifting platform is fixedly connected to the top of the three buffer springs, and a buffer pad is fixedly installed on the top surface of the lifting platform.

[0007] Preferably, guide rods are fixedly installed on both sides of the fixed frame, and guide sleeves are fixedly installed on both sides of the bottom surface of the lifting platform. There are two guide sleeves and two guide rods. The guide sleeves are slidably fitted on the surface of the guide rods. A connecting slot is opened on the top surface of the support frame, and the connecting slot is slidably fitted on the surface of the connector.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] 1. In this utility model, an auxiliary frame and a support frame are a group, which are evenly installed on both sides of the longitudinal beam body. With the cooperation of the auxiliary frame and the support frame, the longitudinal beam body completes the support installation work of the corresponding carriage, reducing the load on the longitudinal beam body from the carriage.

[0010] 2. In this utility model, when the carriage is raised, the lifting platform and the buffer pad pop out into the storage slot with the cooperation of the buffer spring. When the carriage is lowered, the buffer spring and the buffer pad in the buffer assembly on both sides of each auxiliary frame assist the carriage to lower, reduce the impact force of the carriage on the longitudinal beam body, and improve the service life of the longitudinal beam body. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a cross-sectional view of the longitudinal beam body in conjunction with the auxiliary frame and support frame of this utility model.

[0014] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0015] Figure 4 This is a schematic diagram of the auxiliary frame and buffer assembly structure of this utility model.

[0016] Figure 5 This is a cross-sectional view of the internal structure of the buffer component of this utility model.

[0017] In the diagram: 1. Longitudinal beam body; 2. Auxiliary frame; 21. First positioning component; 22. Connecting component; 3. Support frame; 31. Second positioning component; 32. Connecting slot; 4. Buffer assembly; 41. Fixing frame; 42. Buffer spring; 43. Lifting platform; 431. Guide sleeve; 44. Buffer pad; 45. Guide rod; 451. Groove; 46. Storage groove; 5. Bolt; 51. Nut. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example: Figure 1-5 As shown, this utility model provides a semi-trailer longitudinal beam structure, including a longitudinal beam body 1. Auxiliary frames 2 are evenly distributed and fixedly installed on both sides of the longitudinal beam body 1. A support frame 3 is fixedly installed below the auxiliary frame 2. A connector 22 is fixedly installed at one end of the bottom surface of the auxiliary frame 2. A top end of the support frame 3 is slidably sleeved on the surface of the connector 22. A first positioning member 21 is fixedly installed at both ends of the auxiliary frame 2. A second positioning member 31 is fixedly installed at both ends of the support frame 3. Bolts 5 are inserted into the first positioning member 21 and the second positioning member 31. Nuts 51 are threaded on the surface of the bolts 5. The bolts 5 and the nuts 51 cooperate with the first positioning member 21 and the second positioning member 31 respectively. Buffer components 4 are fixedly installed on both sides of the auxiliary frame 2.

[0020] With the cooperation of the first positioning piece 21 installed on both sides of the auxiliary frame 2 and the corresponding bolts 5 and nuts 51, the installation and fixation of each auxiliary frame 2 on both sides of the longitudinal beam body 1 is completed. After installation, the support frame 3 is installed and positioned on the bottom surface of the auxiliary frame 2 by the connector 22 installed on one side of the bottom surface of each auxiliary frame 2. After the support frame 3 is positioned, with the cooperation of the second positioning piece 31 installed on both sides of the support frame 3 and the corresponding bolts 5 and nuts 51, the installation and fixation of the support frame 3 on the bottom surface of the corresponding auxiliary frame 2 is completed. One auxiliary frame 2 and one support frame 3 form a group, which are evenly installed on both sides of the longitudinal beam body 1. With the cooperation of the auxiliary frame 2 and the support frame 3, the auxiliary longitudinal beam body 1 completes the support installation work of the corresponding carriage, reducing the load of the carriage on the longitudinal beam body 1.

[0021] The buffer assembly 4 includes a fixed frame 41. Three buffer springs 42 are fixedly installed on the bottom surface of the fixed frame 41. The top of the three buffer springs 42 is fixedly connected to a lifting platform 43. A buffer pad 44 is fixedly installed on the top surface of the lifting platform 43. The connection between the three buffer springs 42 installed on the bottom surface of the fixed frame 41 and the lifting platform 43 is completed. When the car is lifted, the lifting platform 43 and the buffer pad 44 pop out into the storage slot 46 with the cooperation of the buffer springs 42. When the car is lowered, the buffer springs 42 and the buffer pad 44 in the buffer assembly 4 on both sides of each auxiliary frame 2 assist the car to lower, reduce the impact force of the car on the longitudinal beam body 1, and improve the service life of the longitudinal beam body 1.

[0022] Guide rods 45 are fixedly installed on both sides of the fixed frame 41, and guide sleeves 431 are fixedly installed on both sides of the bottom surface of the lifting platform 43. There are two guide sleeves 431 and two guide rods 45. The guide sleeves 431 are slidably sleeved on the surface of the guide rods 45. The lifting platform 43 is controlled to rise and fall by the two guide sleeves 431 and the corresponding guide rods 45, which increases the stability of the lifting platform 43 when it rises and falls, and at the same time completes the guiding work when the lifting platform 43 rises and falls, ensuring that the lifting platform 43 can rise and fall within the storage slot 46. A connecting slot 32 is opened on the top surface of the support frame 3. The connecting slot 32 is slidably sleeved on the surface of the connector 22. The connection between the support frame 3 and the auxiliary frame 2 is completed by the connecting slot 32 on the top surface of the support frame 3 and the connector 22.

[0023] The top surface of the fixed frame 41 is provided with a storage groove 46. The lifting platform 43 and the buffer pad 44 are slidably locked in the storage groove 46. The storage groove 46 on the top surface of the fixed frame 41 is used to store the lifting platform 43 and the buffer pad 44. The fixed frame 41 has grooves 451 on both sides. The guide rod 45 is fixedly installed in the groove 451. The guide sleeve 431 is slidably installed in the groove 451 through the guide rod 45. The grooves 451 on both sides of the fixed frame 41 are used to install and fix the corresponding guide rod 45, and at the same time, the guide sleeve 431 is used for lifting.

[0024] Working principle: With the cooperation of the first positioning piece 21 installed on both sides of the auxiliary frame 2 and the corresponding bolts 5 and nuts 51, the auxiliary frame 2 is installed and fixed on both sides of the longitudinal beam body 1. After installation, the support frame 3 is installed and positioned on the bottom surface of the auxiliary frame 2 by the connector 22 installed on one side of the bottom surface of each auxiliary frame 2. After the support frame 3 is positioned, with the cooperation of the second positioning piece 31 installed on both sides of the support frame 3 and the corresponding bolts 5 and nuts 51, the support frame 3 is installed and fixed on the bottom surface of the corresponding auxiliary frame 2. One auxiliary frame 2 and one support frame 3 form a group, which are evenly installed on both sides of the longitudinal beam body 1. With the cooperation of the auxiliary frame 2 and the support frame 3, the auxiliary longitudinal beam body 1 completes the support installation work of the corresponding carriage, reducing the load of the carriage on the longitudinal beam body 1.

[0025] When the carriage is raised, the lifting platform 43 and the buffer pad 44 pop out into the storage slot 46 with the cooperation of the buffer spring 42. When the carriage is lowered, the buffer spring 42 and the buffer pad 44 in the buffer assembly 4 on both sides of each auxiliary frame 2 assist the carriage to lower, reduce the impact force of the carriage on the longitudinal beam body 1, and improve the service life of the longitudinal beam body 1.

[0026] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A semi-trailer longitudinal beam structure, comprising a longitudinal beam body (1), characterized in that: Auxiliary frames (2) are fixedly installed on both sides of the longitudinal beam body (1). A support frame (3) is fixedly installed below the auxiliary frame (2). A connector (22) is fixedly installed at one end of the bottom surface of the auxiliary frame (2). One end of the top surface of the support frame (3) is slidably sleeved on the surface of the connector (22). A first positioning component (21) is fixedly installed at both ends of the auxiliary frame (2). A second positioning component (31) is fixedly installed at both ends of the support frame (3). Bolts (5) are inserted into the first positioning component (21) and the second positioning component (31). Nuts (51) are threaded on the surface of the bolts (5). The bolts (5) and nuts (51) cooperate with the first positioning component (21) and the second positioning component (31) respectively. Buffer components (4) are fixedly installed on both sides of the auxiliary frame (2).

2. The semi-trailer longitudinal beam structure as described in claim 1, characterized in that, The buffer assembly (4) includes a fixed frame (41), and a uniformly distributed buffer spring (42) is fixedly installed on the bottom surface of the fixed frame (41). There are three buffer springs (42), and a lifting platform (43) is fixedly connected to the top of the three buffer springs (42). A buffer pad (44) is fixedly installed on the top surface of the lifting platform (43).

3. The semi-trailer longitudinal beam structure as described in claim 2, characterized in that, Guide rods (45) are fixedly installed on both sides of the fixed frame (41), and guide sleeves (431) are fixedly installed on both sides of the bottom surface of the lifting platform (43). There are two guide sleeves (431) and two guide rods (45). The guide sleeves (431) are slidably sleeved on the surface of the guide rods (45).

4. The semi-trailer longitudinal beam structure as described in claim 1, characterized in that, The top surface of the support frame (3) is provided with a connecting slot (32), which is slidably fitted onto the surface of the connector (22).

5. A semi-trailer longitudinal beam structure as described in claim 2, characterized in that, The top surface of the fixed frame (41) is provided with a storage groove (46), and the lifting platform (43) and the buffer pad (44) are slidably locked in the storage groove (46).

6. A semi-trailer longitudinal beam structure as described in claim 3, characterized in that, The fixed frame (41) has grooves (451) on both sides. The guide rod (45) is fixedly installed in the groove (451). The guide sleeve (431) is slidably installed in the groove (451) through the guide rod (45).

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