Suspension structure of high-load three-shaft semitrailer

Abstract

The high-load three-shaft semitrailer suspension structure comprises an upper cross beam, a fixing sleeve and a connector, the bottom of the upper cross beam is fixedly connected with the fixing sleeve, and the connector is installed on the bottom face of the upper cross beam. The trailer has the advantages that the upper cross beam and the lower cross beam are connected through the multiple sets of steel plate springs, the steel plate springs have high bearing capacity and can bear large vertical loads, the trailer can be kept stable under the heavy load condition, meanwhile, the upper cross beam and the lower cross beam are connected through the multiple dampers, and therefore the stability of the trailer is improved. The shock absorbers are arranged in an inclined mode, the included angle between every two adjacent shock absorbers is the obtuse angle, and due to the fact that the included angle between every two adjacent shock absorbers is the obtuse angle, vertical loads can be better distributed and dispersed. Therefore, the suspension system can bear larger weight, and the bearing capacity of the three-axle semitrailer is improved, so that the improved suspension structure of the three-axle semitrailer has high loading capacity and high bearing capacity.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailer suspensions, in particular to a high-load three-axle semi-trailer suspension structure. Background Art

[0002] The semi-trailer suspension is an essential component of the semi-trailer, connecting the frame and wheels. It supports the vehicle body, cushions vibrations, and transmits loads. Depending on their structure and performance, semi-trailer suspensions can be categorized into several types, such as leaf spring suspension, which boasts low cost, reliable operation, and easy maintenance.

[0003] The traditional leaf spring semi-trailer suspension structure is relatively simple, consisting primarily of leaf springs, suspension supports, and connecting rods. This structure has a relatively simple force transmission path and lacks effective buffering and shock absorption mechanisms, making the leaf springs prone to bending and breaking under heavy loads. Therefore, a new high-load three-axle semi-trailer suspension structure was proposed. This design utilizes a unique three-axle, multiple leaf spring, and shock absorber design to effectively address these issues. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0005] Therefore, one purpose of the present invention is to provide a high-load three-axle semi-trailer suspension structure to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0006] To achieve the above objectives, an embodiment of one aspect of the present invention provides a high-load three-axle semi-trailer suspension structure, comprising an upper crossbeam, a fixing sleeve, and a joint. The bottom of the upper crossbeam is fixedly connected to the fixing sleeve, and the bottom surface of the upper crossbeam is mounted with a joint. A leaf spring is movably connected to the inner side of the joint, and the other end of the leaf spring is fixedly connected to the inner side of the fixing sleeve.

[0007] The leaf spring is formed by stacking a number of bent steel plates, and a lower crossbeam is abutted below the middle section of the leaf spring;

[0008] A positioning sleeve is fixedly connected to the surface of the lower cross beam, and the middle section of the leaf spring is located inside the positioning sleeve;

[0009] The inner side of the upper crossbeam is movably connected to a shock absorber, and the other end of the shock absorber is movably connected to the inner side of the lower crossbeam;

[0010] Three main shafts are movably connected to the lower cross beam, and hubs are installed at both ends of the main shafts.

[0011] Preferably, from any of the above solutions, the upper crossbeam is located directly above the lower crossbeam, and the length of the upper crossbeam is greater than the length of the lower crossbeam.

[0012] Adopting the above technical solution: This structure is the suspension structure of a semi-trailer, which is a three-axle structure with three main axes.

[0013] This suspension structure, with its main shaft, upper crossbeam, and lower crossbeam all arranged in a "M" shape, offers a compact structure and excellent stability, effectively withstanding loads from all directions, including longitudinal, lateral, and vertical forces. This design reduces vehicle shake and bumps during driving, improving ride smoothness and stability.

[0014] It has strong bearing capacity and can withstand large vertical loads and lateral forces.

[0015] Preferably, according to any of the above solutions, the upper crossbeam is perpendicular to the main axis.

[0016] The core of this suspension structure is the design of the leaf springs, the structure and distribution of the shock absorbers, and the design of the three main axes. The core advantages of this suspension structure are: multiple sets of leaf springs are used to connect the upper and lower crossbeams. The leaf springs have a high load-bearing capacity and can withstand large vertical loads, allowing the trailer to remain stable even under heavy loads.

[0017] The upper and lower crossbeams are connected by multiple shock absorbers, which are tilted and positioned at an obtuse angle between adjacent shock absorbers. This helps better distribute and disperse vertical loads, allowing the suspension system to withstand greater weight and improve the load-bearing capacity of the three-axle semi-trailer.

[0018] Therefore, the improved three-axle semi-trailer suspension structure is a suspension structure with high load capacity and high bearing capacity.

[0019] Preferably, any of the above solutions has a bent portion of the leaf spring facing downward, and the leaf springs are six in number and divided into two groups.

[0020] Preferably, from any of the above solutions, the positioning sleeve is U-shaped, the shock absorbers are arranged obliquely, and the angles between adjacent shock absorbers are obtuse angles.

[0021] Preferably, any of the above solutions is provided with six shock absorbers in total and three of them form a group, and the wheel hub is located on the outside of the lower cross beam.

[0022] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows:

[0023] The suspension structure of this high-load three-axle semi-trailer features leaf spring design, shock absorber structure and distribution, improved design of the three main axles, and the use of multiple leaf springs between the upper and lower crossbeams. The leaf springs have a high load-bearing capacity and can withstand large vertical loads, allowing the trailer to remain stable even under heavy loads.

[0024] The upper and lower crossbeams are connected by multiple shock absorbers, which are tilted and positioned at an obtuse angle between adjacent shock absorbers. This helps better distribute and disperse vertical loads, allowing the suspension system to withstand greater weight and improve the load-bearing capacity of the three-axle semi-trailer.

[0025] Therefore, the improved three-axle semi-trailer suspension structure is a suspension structure with high load capacity and high bearing capacity.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 This is a schematic structural diagram of the utility model from the first perspective;

[0029] Figure 2 This is a schematic structural diagram of the utility model from a second viewing angle;

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

[0031] Figure 4 For this utility model Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0032] In the figure: 1-upper crossbeam, 2-fixing sleeve, 3-joint, 4-leaf spring, 5-lower crossbeam, 6-positioning sleeve, 7-shock absorber, 8-main shaft, 9-wheel hub. DETAILED DESCRIPTION

[0033] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] As Figure 1-4 shown, the suspension structure of this high-load three-axle semi-trailer includes an upper crossbeam 1, a fixed sleeve 2, and a joint 3. The bottom of the upper crossbeam 1 is fixedly connected to the fixed sleeve 2, and the joint 3 is installed on the bottom surface of the upper crossbeam 1. The inner side of the joint 3 is movably connected to a leaf spring 4, and the other end of the leaf spring 4 is fixedly connected to the inner side of the fixed sleeve 2;

[0036] The leaf spring 4 is formed by laminating several bent steel plates, and the lower part of the middle section of the leaf spring 4 abuts against a lower crossbeam 5;

[0037] The surface of the lower crossbeam 5 is fixedly connected to a positioning sleeve 6, and the middle section of the leaf spring 4 is located inside the positioning sleeve 6;

[0038] The inner side of the upper crossbeam 1 is movably connected to a shock absorber 7, and the other end of the shock absorber 7 is movably connected to the inner side of the lower crossbeam 5;

[0039] Three main shafts 8 are movably connected to the lower crossbeam 5, and hubs 9 are installed at both ends of the main shafts 8.

[0040] Embodiment 1: The upper crossbeam 1 is located directly above the lower crossbeam 5, and the length of the upper crossbeam 1 is greater than the length of the lower crossbeam 5. This structure is the suspension structure of a semi-trailer, which is a three-axle structure with a total of three main shafts 8. In this suspension structure, the main shafts 8 and the upper crossbeam 1 and the lower crossbeam 5 are all in a square-eye shape structure, with a compact structure and good stability, and can effectively bear the loads from all directions, including longitudinal, transverse, and vertical forces. This design can reduce the shaking and bumping of the vehicle during driving, improve the smoothness and stability of driving. It has a strong bearing capacity and can bear large vertical loads and lateral forces.

[0041] Embodiment 2: The upper crossbeam 1 is perpendicular to the main shaft 8. The bending part of the leaf spring 4 faces downward, and the number of leaf springs 4 is six and is divided into two groups. The shape of the positioning sleeve 6 is U-shaped, the shock absorber 7 is inclined, and the included angle between adjacent shock absorbers 7 is an obtuse angle. A total of six shock absorbers 7 are provided and are grouped in threes, and the hubs 9 are located outside the lower crossbeam 5.

[0042] The working principle of the present utility model is as follows:

[0043] S1, the lower crossbeam 5 is movably connected to the main shaft 8, and the hubs at both ends of the main shaft 8 are used to mount tires;

[0044] S2. The upper crossbeam 1 is movably connected to the leaf spring 4 through the joint 3. The bent part of the leaf spring 4 abuts the lower crossbeam 5. The other end of the leaf spring 4 is fixedly connected to the inner side of the fixed sleeve 2. The root of the shock absorber 7 is movably connected to the inner side of the upper crossbeam 1. The shock absorbers 7 form an obtuse angle with each other. The other end of the shock absorber 7 is movably connected to the lower crossbeam 5.

[0045] S3. The linkage of the three main shafts 8 is realized, and the heavy-loaded semi-trailer has a stronger adaptability to the undulating terrain, ensuring the uniform distribution of the load, and not generating excessive longitudinal stress when the longitudinal displacement of a single main shaft 8 is large.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] The suspension structure of this high-load three-axle semi-trailer features an improved design of leaf springs 4, the structure and distribution of shock absorbers 7, and three main axles 8. Multiple sets of leaf springs 4 are used as connections between the upper crossbeam 1 and the lower crossbeam 5. The leaf springs 4 have a high load-bearing capacity and can withstand large vertical loads, allowing the trailer to remain stable even under heavy loads.

[0048] Furthermore, multiple shock absorbers 7 are used to connect the upper crossbeam 1 and the lower crossbeam 5. These shock absorbers 7 are tilted, with adjacent shock absorbers 7 forming an obtuse angle. This obtuse angle between the shock absorbers 7 better distributes and disperses vertical loads. This means the suspension system can withstand greater weight, improving the load-bearing capacity of the three-axle semi-trailer.

[0049] Therefore, the improved three-axle semi-trailer suspension structure is a suspension structure with high load capacity and high bearing capacity.

Claims

1. A high-load three-axle semi-trailer suspension structure, characterized in that: It comprises an upper crossbeam (1), a fixing sleeve (2), and a joint (3), wherein the bottom of the upper crossbeam (1) is fixedly connected to the fixing sleeve (2), the bottom surface of the upper crossbeam (1) is provided with a joint (3), the inner side of the joint (3) is movably connected to a leaf spring (4), and the other end of the leaf spring (4) is fixedly connected to the inner side of the fixing sleeve (2); The leaf spring (4) is formed by stacking a plurality of bent steel plates, and a lower cross beam (5) is abutted below the middle section of the leaf spring (4); A positioning sleeve (6) is fixedly connected to the surface of the lower cross beam (5), and the middle section of the leaf spring (4) is located on the inner side of the positioning sleeve (6); A shock absorber (7) is movably connected to the inner side of the upper cross beam (1), and the other end of the shock absorber (7) is movably connected to the inner side of the lower cross beam (5); Three main shafts (8) are movably connected to the lower cross beam (5), and hubs (9) are installed at both ends of the main shafts (8).

2. A high-load three-axle semitrailer suspension structure as claimed in claim 1, characterized in that: The upper crossbeam (1) is located directly above the lower crossbeam (5), and the length of the upper crossbeam (1) is greater than the length of the lower crossbeam (5).

3. A high-load three-axle semitrailer suspension structure as claimed in claim 2, characterized in that: The upper crossbeam (1) is perpendicular to the main axis (8).

4. A high-load three-axle semitrailer suspension structure as claimed in claim 3, characterized in that: The bent part of the leaf spring (4) faces downwards, and there are six leaf springs (4) divided into two groups.

5. A high-load three-axle semitrailer suspension structure as claimed in claim 4, characterized in that: The positioning sleeve (6) is in a U-shape, the shock absorbers (7) are arranged at an angle, and the angles between adjacent shock absorbers (7) are obtuse angles.

6. A high-load three-axle semitrailer suspension structure as claimed in claim 5, characterized in that: A total of six shock absorbers (7) are provided, with three of them forming a group, and the wheel hub (9) is located on the outer side of the lower cross beam (5).

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