A suspension shock absorbing device for a semi-trailer

Abstract

The utility model belongs to the technical field of semi-trailer shock-absorbing structure, specifically a semi-trailer suspension shock-absorbing device, including a balance arm, a plurality of mounting grooves for mounting shock-absorbing rubber pads are arranged on the balance arm, shock-absorbing rubber pads are arranged in the mounting grooves, and the shock-absorbing rubber pads are connected to the balance arm by fixing bolts; and a plurality of fixing holes are arranged on the shock-absorbing rubber pads. The semi-trailer suspension shock-absorbing device provided by the utility model is provided with a rubber buffer pad at the place where the balance arm and the bracket are in rigid contact. When the balance arm swings greatly when encountering a severe impact during the driving of the vehicle, the rubber buffer pad will play a good buffering role. Thereby, the probability of damage to the beam caused by severe impact can be reduced or minimized. The setting of the shock-absorbing rubber pad is to transform the rigid force between the balance arm and the bracket into a relatively soft flexible force, thereby optimizing the impact force of the suspension system, improving the complex situation of the frame beam being subjected to severe impact force, and extending its service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of semitrailer shock absorbing structures, and in particular relates to a semitrailer suspension shock absorbing device. Background Art

[0002] Traditional semi-trailers have a heavy vehicle weight. Before the overweight control, in order to carry more and run faster and ensure the strength of the frame, the thickness of the upper and lower wing plates and web plates of the beam is generally large. The strength level of the beam material is low, and manganese steel Q355 is mostly used. The thickness of the suspension vertical plates, connecting plates, pull rods and other components is large, and the load-bearing capacity is strong. Due to its heavy weight, the fuel consumption of the whole vehicle is high.

[0003] As traffic management departments strengthen their efforts to control overloaded transportation, vehicle lightweighting has gradually become an industry trend. More and more car owners prefer to choose products with stable performance but lighter weight when purchasing trailers and their accessories. This has also, to a certain extent, driven trailer and accessories manufacturers to continuously optimize and improve materials, processes, structures, etc. The lightweight of semi-trailers corresponds to the application of high-strength materials with higher strength levels. However, compared with the manganese steel used before the overload control, the high-strength materials of lightweight semi-trailers have poor ductility. When an unloaded vehicle traveling at high speed passes through a shock absorber or in bad road conditions, the impact of the suspension on the beam is destructive, especially the high-strength lightweight semi-trailers currently launched by manufacturers on the market.

[0004] Through observation and research on the rigid suspension system of lightweight semi-trailers, it is found that the balance arm device in the suspension system swings greatly when the vehicle passes through the shock absorber belt or in bad road conditions. The impact on the trailer beam through the bracket is rigid. This rigid impact is changed to flexible force through structural optimization, thereby optimizing the force system, which helps to protect the beam, extend the service life of the beam, and improve the use effect. This has become one of our research directions. The improved suspension system has a wider range of use and stronger impact resistance. It can effectively reduce the vibration amplitude, reduce noise, and reduce damage to the frame beam due to severe impact. Thereby effectively extending the service life of the frame and improving the use effect. Utility Model Content

[0005] In view of this, the utility model provides a semi-trailer suspension shock absorbing device to solve the problem of large swing amplitude of the existing semi-trailer suspension device recorded in the background technology and rigid impact between the bracket and the beam.

[0006] In order to achieve the above object, the utility model is implemented through the following technical solutions:

[0007] The utility model provides a semi-trailer suspension shock absorbing device, comprising a balance arm, wherein the balance arm is provided with a plurality of mounting grooves for mounting shock absorbing rubber pads, shock absorbing rubber pads are arranged in the mounting grooves, and the shock absorbing rubber pads are connected to the balance arm by fixing bolts; and the shock absorbing rubber pads are provided with a plurality of fixing holes of a countersunk structure.

[0008] In the above-mentioned semi-trailer suspension shock absorbing device, as a preferred solution, the mounting grooves are located on both sides of the balance arm shaft hole, and the two mounting grooves are symmetrically arranged about the shaft hole.

[0009] In the above-mentioned semi-trailer suspension shock absorbing device, as a preferred solution, the shock absorbing rubber pad is a cylinder or a rectangle.

[0010] In the above-mentioned semi-trailer suspension shock absorbing device, as a preferred solution, the head of the fixing bolt is located in the countersunk structure of the fixing hole, and the inclination of the lower side of the head of the fixing bolt matches the inclination of the countersunk structure.

[0011] The utility model provides a semi-trailer suspension shock absorbing device, which has the following beneficial effects:

[0012] The semi-trailer suspension shock absorbing device provided by the utility model is provided with a rubber buffer pad at the place where the balance arm and the bracket are in rigid contact. When the balance arm swings greatly when the vehicle encounters a severe impact during driving, the rubber buffer pad will play a good buffering role. Thus, the probability of damage to the beam caused by severe impact can be reduced.

[0013] The setting of the shock-absorbing rubber pad transforms the rigid force between the balance arm and the bracket into a relatively soft flexible force, thereby optimizing the impact force of the suspension system, improving the complex situation of the frame beam being subjected to severe impact force, and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a semi-trailer without a shock-absorbing rubber pad in the prior art provided by the utility model;

[0015] Figure 2 A side view schematic diagram of the combined structure of the balance arm and the shock-absorbing rubber pad provided by the utility model;

[0016] Figure 3 This is a schematic diagram of the end face of the combined structure of the balance arm and the shock-absorbing rubber pad provided by the utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the shock-absorbing rubber pad provided by the utility model;

[0018] Figure 5 This is a schematic diagram of the three-dimensional structure of the shock-absorbing rubber pad provided by the utility model. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Exemplary embodiments of the present invention are described in detail with reference to the following drawings.

[0021] The serial numbers in the figure mean as follows: 1 is the beam, 2 is the front center bracket, 3 is the balance arm, 4 is the rear center bracket, 5 is the bow plate, 6 is the shock-absorbing rubber pad, 7 is the fixing bolt, and 8 is the fixing hole.

[0022] The following describes exemplary embodiments of the present invention in combination with specific circumstances:

[0023] Example 1: Combination Figure 1-Figure 5 As shown, the utility model provides a semi-trailer suspension shock-absorbing device, including a balancing arm 3, a plurality of mounting grooves for mounting shock-absorbing rubber pads 6 are arranged on the balancing arm 3, shock-absorbing rubber pads 6 are arranged in the mounting grooves, and the shock-absorbing rubber pads 6 are connected to the balancing arm 3 by fixing bolts 7; a plurality of fixing holes 8 with countersunk structures are arranged on the shock-absorbing rubber pads 6, the balancing arm 3 is installed on the front middle bracket 2 at the middle front part of the semi-trailer beam 1 and on the rear middle bracket 4 at the middle rear part of the beam 1, the shock-absorbing rubber pad 6 is located between the balancing arm 3 and the front middle bracket 2 or between the balancing arm 3 and the rear middle bracket 4, and the two ends of the bow plate 5 on the suspension are connected between different balancing arms 3.

[0024] In the above-mentioned semi-trailer suspension shock absorbing device, as a preferred solution, the mounting grooves are located on both sides of the rotating shaft hole of the balance arm 3, and the two mounting grooves are symmetrically arranged about the rotating shaft hole. The shock absorbing rubber pad 6 is a cylindrical or rectangular body structure. The head of the fixing bolt 7 is located in the countersunk structure of the fixing hole 8, and the inclination of the lower side of the head of the fixing bolt 8 matches the inclination of the countersunk structure.

[0025] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0026] The above specific examples are used to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A semi-trailer suspension shock absorbing device, comprising a balance arm, characterized in that: The balance arm is provided with a plurality of mounting grooves for mounting shock-absorbing rubber pads, shock-absorbing rubber pads are arranged in the mounting grooves, and the shock-absorbing rubber pads are connected to the balance arm via fixing bolts; the shock-absorbing rubber pads are provided with a plurality of fixing holes with countersunk structures.

2. The semitrailer suspension shock absorbing device according to claim 1, characterized in that: The mounting grooves are located on both sides of the rotating shaft hole of the balance arm, and the two mounting grooves are symmetrically arranged about the rotating shaft hole.

3. The semitrailer suspension shock absorbing device according to claim 1, characterized in that: The shock-absorbing rubber pad is a cylinder or a rectangle.

4. The semitrailer suspension shock absorbing device according to claim 1, characterized in that: The head of the fixing bolt is located in the countersunk structure of the fixing hole, and the inclination of the lower side of the head of the fixing bolt matches the inclination of the countersunk structure.

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