High-strength trailer traction buckle

Abstract

The utility model relates to the technical field of metal processing, in particular to a high-strength trailer traction buckle. The traction buckle is arranged in an arc shape, and the two ends of the traction buckle are connected with a traction body; the traction body is U-shaped, and the thickness of the traction body is greater than that of the traction buckle; comprising a transverse traction shaft and reinforcing parts located on the two sides of the traction shaft, and arc-shaped transition sections are arranged between the reinforcing parts and traction buckles. The reinforcing part and the top of the traction shaft are sunken downwards to form a groove. According to the technical scheme, the trailer traction buckle comprises a structure that the arc-shaped traction buckle is connected with the U-shaped traction body, and the traction body is provided with the reinforcing part and the arc-shaped transition section, so that the overall strength and durability of the trailer traction buckle are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal processing, and particularly relates to a high-strength trailer towing buckle. Background Art

[0002] In the trailer transportation industry, as the core component connecting the trailer and the towing vehicle, the mechanical strength and durability of the trailer towing buckle are directly related to the safety factor and operation efficiency of transportation operations. Given this importance, technical experts in this field have been continuously committed to technological innovation to address the deficiencies in the existing technology. For example, Chinese Patent CN214112196U has disclosed a small trailer towing device. Through a cleverly designed socket structure, a stable connection between small trailers is achieved, that is, the socket joint of the towing rod can smoothly fit into the notch obliquely above the socket buckle and slide along the arc section to the straight section and the semi-circular section, effectively preventing accidental disconnection during driving bumps. However, although the above solution shows certain advantages in specific scenarios, the traditional trailer towing buckle field still generally faces challenges such as a single structural design, limited bearing strength, and easy wear. These problems are particularly prominent in the modern transportation industry that increasingly pursues high-efficiency, safe, and long-life connectors, and more comprehensive and innovative solutions are urgently needed. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the existing technology and provide a high-strength trailer towing buckle.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A high-strength trailer towing buckle includes the following components:

[0006] The towing buckle is arranged in an arc shape, and its two ends are connected to the towing body.

[0007] The towing body is arranged in a U shape, and its thickness is greater than that of the towing buckle; it includes a horizontal towing shaft and strengthening parts on both sides of the towing shaft. An arc transition section is arranged between the strengthening parts and the towing buckle; the tops of the strengthening parts and the towing shaft are recessed downward to form grooves.

[0008] This technical solution includes a structure where an arc-shaped towing buckle is connected to a U-shaped towing body, and the towing body is provided with a reinforcing part and an arc transition section to enhance the overall strength and durability of the trailer towing buckle. Specifically, the arc of the towing buckle helps to disperse the stress at the connection point, reducing the concentrated stress generated by straight-line stretching, thereby extending the service life; the arc-shaped towing buckle can better fit the connection components of the trailer or vehicle, improving the stability and reliability of the connection; the thickness of the U-shaped structure is greater than that of the towing buckle, meaning that under the same stress, the towing body can absorb more energy and is not easily deformed or broken, enhancing the strength and rigidity of the overall structure; the towing shaft, as the main load-bearing component, is provided with reinforcing parts on both sides, significantly increasing the bending and torsional resistance of the towing body; the reinforcing parts not only increase the cross-sectional area of the structure but also improve the rigidity through their geometric shape; the design of the arc transition section reduces stress concentration, making the stress distribution more uniform and avoiding the risk of fracture caused by sudden cross-sections; the grooves on the reinforcing part and the top of the towing shaft are used to reduce the overall weight while maintaining the necessary strength, achieving a lightweight design; the grooves can be used as a reference for installing accessories, improving the accuracy and stability of the connection; the grooves are used to guide the stress flow, reducing stress concentration in specific areas and improving the fatigue life of the structure.

[0009] In addition, according to the above-mentioned high-strength trailer towing buckle of the present utility model, it may also have the following additional technical features:

[0010] According to an embodiment of the present utility model, the reinforcing part includes a reinforcing part I on the left side and a reinforcing part II on the right side, and the thicknesses of both the reinforcing part I and the reinforcing part II are three times that of the towing buckle.

[0011] This technical solution enhances the structural stability and load-bearing capacity of the trailer towing buckle by specifying the specific composition of the reinforcing part, namely the reinforcing part I on the left side and the reinforcing part II on the right side, and the thicknesses of both are three times that of the towing buckle.

[0012] According to an embodiment of the present utility model, a groove I is provided on the reinforcing part I, and a groove II is provided on the reinforcing part II. The depths of the groove I and the groove II are consistent with the thickness of the towing buckle.

[0013] This technical solution respectively provides groove I and groove II with the same thickness as the towing buckle on the reinforcing parts I and II to achieve the purpose of reducing part of the weight while maintaining the structural strength, and optimizing the structure of the trailer towing buckle.

[0014] According to an embodiment of the present utility model, convex reinforcing covers are installed at both ends of the towing shaft through bolts.

[0015] This technical solution installs convex reinforcing covers at both ends of the towing shaft and fixes them with bolts to enhance the stability of the connection of the towing shaft and improve the safety of the trailer towing buckle.

[0016] According to an embodiment of the present utility model, a groove III is provided in the middle of the towing shaft, and the depth of the groove III is consistent with the thickness of the towing buckle.

[0017] This technical solution provides a groove III with a depth consistent with the thickness of the towing buckle in the middle of the towing shaft, which not only reduces the weight but also facilitates the installation or connection of other components, further refining the functionality and adaptability of the trailer towing buckle.

[0018] According to an embodiment of the present utility model, the towing buckle and the towing body are integrally processed from alloy steel 42CrMoA, with a hardness of 40 - 47HRC, a tensile strength Rm ≥ 177 Ksi, a lower yield strength RP0.2 ≥ 165 Ksi, and an elongation after fracture ≥ 12%.

[0019] This technical solution designates the material of the trailer towing buckle as alloy steel 42CrMoA and details its key performance indicators such as hardness, tensile strength, lower yield strength, and elongation after fracture, ensuring that the trailer towing buckle has excellent mechanical properties and durability to meet the usage requirements in high-load working environments.

[0020] Compared with the prior art, the present utility model has the following beneficial effects:

[0021] The present utility model includes a structure in which an arc-shaped towing buckle is connected to a U-shaped towing body, and a setting on the towing body with a strengthening portion and an arc-shaped transition section, which is used to improve the overall strength and durability of the trailer towing buckle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is one of the structural schematic diagrams of the present utility model.

[0023] Figure 2 is the second structural schematic diagram of the present utility model.

[0024] In the figure: 1. Towing buckle; 2. Towing body; 21. Towing shaft; 22. Groove I; 23. Groove II; 24. Groove III. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Embodiment 1

[0027] As Figure 1 andFigure 2 As shown in the figure, this embodiment provides a high-strength trailer towing buckle, which includes the following components:

[0028] The towing buckle 1 is arc-shaped, and its two ends are connected to the towing body 2;

[0029] The towing body 2 is U-shaped, and its thickness is greater than that of the towing buckle 1; it includes a horizontal towing shaft 21 and reinforcing parts on both sides of the towing shaft 21. An arc-shaped transition section is provided between the reinforcing parts and the towing buckle 1; the tops of the reinforcing parts and the towing shaft 21 are recessed downward to form grooves.

[0030] As Figure 1 and Figure 2 shown, this technical solution includes the structure where the arc-shaped towing buckle 1 is connected to the U-shaped towing body 2, and the setting of the reinforcing parts and the arc-shaped transition section on the towing body 2, which are used to improve the overall strength and durability of the trailer towing buckle 1. Specifically, the arc of the towing buckle 1 helps to disperse the stress at the connection point, reduce the concentrated stress generated by linear stretching, and thus extend the service life; the arc-shaped towing buckle 1 can better fit the connection parts of the trailer or vehicle, improving the stability and reliability of the connection; the U-shaped structure has a greater thickness than the towing buckle 1, which means that under the same stress, the towing body 2 can absorb more energy and is not easily deformed or broken, enhancing the strength and rigidity of the overall structure; the towing shaft 21, as the main load-bearing component, is provided with reinforcing parts on both sides, significantly increasing the bending and torsional resistance of the towing body 2; the reinforcing parts not only increase the cross-sectional area of the structure, but also improve the rigidity through their geometric shape; the design of the arc-shaped transition section reduces stress concentration, makes the stress distribution more uniform, and avoids the risk of fracture caused by sudden cross-sections; the grooves on the tops of the reinforcing parts and the towing shaft 21 are used to reduce the overall weight while maintaining the necessary strength, achieving a lightweight design; the grooves can be used as a reference for installing accessories, improving the connection accuracy and stability; the grooves are used to guide the stress flow, reduce the stress concentration in specific areas, and improve the fatigue life of the structure.

[0031] In addition, according to the above-mentioned high-strength trailer towing buckle of the present invention, it may also have the following additional technical features:

[0032] According to an embodiment of the present invention, the reinforcing parts include the reinforcing part I on the left side and the reinforcing part II on the right side, and the thicknesses of both the reinforcing part I and the reinforcing part II are three times that of the towing buckle 1.

[0033] This technical solution enhances the structural stability and load-bearing capacity of the trailer towing buckle 1 by specifying the specific composition of the reinforcing parts, that is, the reinforcing part I on the left side and the reinforcing part II on the right side, and the thicknesses of both are three times that of the towing buckle 1.

[0034] According to an embodiment of the present utility model, a groove I 22 is provided on the strengthening part I, and a groove II 23 is provided on the strengthening part II. The depths of the groove I 22 and the groove II 23 are consistent with the thickness of the towing buckle 1.

[0035] This technical solution respectively provides the groove I 22 and the groove II 23 with depths consistent with the thickness of the towing buckle 1 on the strengthening parts I and II, so as to achieve the purpose of reducing part of the weight while maintaining the structural strength, and optimize the structure of the trailer towing buckle 1.

[0036] According to an embodiment of the present utility model, reinforcing covers protruding outward are installed at both ends of the towing shaft 21 through bolts.

[0037] This technical solution installs reinforcing covers protruding outward at both ends of the towing shaft 21 and fixes them with bolts to enhance the stability of the connection of the towing shaft 21 and improve the safety of the trailer towing buckle 1.

[0038] According to an embodiment of the present utility model, a groove III 24 is provided in the middle of the towing shaft 21. The depth of the groove III 24 is consistent with the thickness of the towing buckle 1.

[0039] This technical solution provides the groove III 24 with a depth consistent with the thickness of the towing buckle 1 in the middle of the towing shaft 21, both to reduce the weight and to facilitate the installation or connection of other components, further refining the functionality and adaptability of the trailer towing buckle 1.

[0040] According to an embodiment of the present utility model, the towing buckle 1 and the towing body 2 are integrally processed from alloy steel 42CrMoA, with a hardness of 40 - 47HRC, a tensile strength Rm ≥ 177 Ksi, a lower yield strength RP0.2 ≥ 165 Ksi, and an elongation after fracture ≥ 12%.

[0041] This technical solution designates the material of the trailer towing buckle 1 as alloy steel 42CrMoA and details its key performance indicators such as hardness, tensile strength, lower yield strength, and elongation after fracture, ensuring that the trailer towing buckle 1 has excellent mechanical properties and durability and meets the usage requirements in a high-load working environment.

[0042] The usage process of the above embodiment is as follows:

[0043] Such as Figure 1 and Figure 2As shown, when the trailer is connected to the vehicle through the high-strength towing buckle 1, the arc-shaped towing buckle 1 first closely fits with the connecting components of the trailer or the vehicle, dispersing and reducing the stress at the connection points; the U-shaped towing body 2 bears the main tensile force, and its thickness and reinforcement design effectively absorb energy to prevent deformation or fracture. The reinforcement and its grooves not only enhance the structural rigidity but also guide the stress distribution to avoid concentration; the reinforcing covers at both ends of the towing shaft 21 are fastened by bolts to ensure a firm connection; the middle groove may be used to reduce weight or install accessories; the whole is made of high-strength alloy steel to ensure excellent performance under high loads and extend the service life.

[0044] Although the present utility model has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present utility model is not limited thereto. Without departing from the spirit and essence of the present utility model, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present utility model, and all such modifications or substitutions should be within the scope of the present utility model. / Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A high-strength trailer towing hook, characterized in that: Includes the following components: The traction buckle (1) is arranged in an arc shape, and its two ends are connected to the traction body (2); The traction body (2) is U-shaped and has a thickness greater than that of the traction buckle (1); it comprises a transverse traction shaft (21) and reinforcement parts located on both sides of the traction shaft (21); an arc-shaped transition section is provided between the reinforcement part and the traction buckle (1); the tops of the reinforcement part and the traction shaft (21) are recessed downward to form a groove.

2. The high-strength trailer towing hook according to claim 1, characterized in that: The reinforcement part comprises a reinforcement part I on the left side and a reinforcement part II on the right side, and the thickness of the reinforcement part I and the reinforcement part II are both three times that of the traction buckle (1).

3. The high-strength trailer towing hook according to claim 2, characterized in that: The reinforcing part I is provided with a groove I (22), and the reinforcing part II is provided with a groove II (23). The depths of the grooves I (22) and II (23) are consistent with the thickness of the traction buckle (1).

4. The high-strength trailer towing hook according to claim 1, characterized in that: Outwardly protruding reinforcement cover plates are mounted on both ends of the traction shaft (21) by means of bolts.

5. The high-strength trailer towing hook according to claim 1 or 4, characterized in that: A groove III (24) is provided in the middle of the traction shaft (21), and the depth of the groove III (24) is consistent with the thickness of the traction buckle (1).

6. The high-strength trailer towing hook according to claim 1, characterized in that: The traction buckle (1) and the traction body (2) are made of an integrally processed alloy steel 42CrMoA, with a hardness of 40-47HRC, a tensile strength Rm≥177 Ksi, a lower yield strength RP0.2≥165 Ksi, and an elongation after fracture≥12%.

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