CN211106827U - A lightweight European-style semi-trailer air suspension system - Google Patents

Abstract

The utility model belongs to the technical field of vehicle suspension, and discloses a lightweight European-style semi-trailer air suspension system. The suspension system comprises a guide arm bracket assembly, a guide arm pin shaft, a guide arm assembly, a shock absorber, a U Type bolt, axle upper bracket assembly, axle lower bracket, U-shaped bolt nut and load-bearing airbag assembly, the guide arm bracket assembly is fixedly connected to the frame, the axle upper bracket assembly, the axle The lower bracket is fixedly connected to the axle; the front end of the guide arm assembly is hinged with the guide arm bracket assembly through its own rubber bushing and the guide arm pin shaft respectively, and the middle part of the guide arm assembly is connected by the U-bolt, The upper bracket of the vehicle axle and the lower bracket of the vehicle axle are matched and fixed on the vehicle axle, and the rear end of the guide arm assembly is connected with the bottom of the air spring assembly; the utility model can effectively absorb the vibration generated when the vehicle is running, Protect the transported items, especially suitable for hazardous chemicals transport and cold chain transport vehicles; and adopt topology optimization design method for lighter weight.

Description

A lightweight European-style semi-trailer air suspension system

technical field

The utility model relates to the technical field of vehicle suspension, in particular to an air suspension system of a lightweight European-style semi-trailer.

Background technique

Leaf spring balance suspension is a common form of suspension on heavy trucks. More than 90% of the existing semi-trailers in China use tandem leaf spring balance suspension. The suspension structure is mainly composed of leaf springs and leaf spring brackets. , connecting rod, U-bolt and other parts.

Application No. 201120345651.6 A triple-axle air spring leaf spring balance suspension for automobiles, comprising: a first suspension, a second suspension and a third suspension, the first suspension includes a first leaf spring, a first air spring; the second suspension includes a second leaf spring and a second air spring; the third suspension includes a third leaf spring and a third air spring; the automobile includes a first drive axle and a second drive axle and the third drive axle; it also includes a first leaf spring support, a suspension intermediate support, a third leaf spring support, a front suspension lever arm, a middle suspension lever arm, a rear suspension lever arm, a middle suspension a thrust lever, a rear suspension thrust lever, a first suspension rear support, a second suspension rear support; the first end of the first leaf spring is connected to the bottom of the first leaf spring support through a pin shaft, The second end of the first leaf spring is connected with the bottom of the first air spring through bolts, so that the first leaf spring support and the first air spring are supported on the first leaf spring; The first ends of the two leaf springs are connected to the bottom of the suspension intermediate support through pins, and the second ends of the second leaf springs are connected to the bottom of the second air spring through bolts, so that the suspension intermediate support , The second air spring is supported on the second leaf spring; the first end of the third leaf spring is connected with the bottom of the third leaf spring support through a pin, and the second end of the third leaf spring The bottom of the third air spring is connected with bolts, so that the third leaf spring support and the third air spring are supported on the third leaf spring; the first leaf spring support, the suspension intermediate support, The third leaf spring support, the first suspension rear support, and the second suspension rear support are respectively connected to the frame through bolts; the first end of the front suspension lever arm is connected to the first air through bolts or pins The top of the spring is connected, the middle part of the front suspension lever arm is connected with the upper part of the intermediate support of the suspension through a bolt or a pin, and the second end of the front suspension lever arm is connected to the The first end of the middle suspension thrust lever is connected, the second end of the middle suspension thrust lever has a first combination hole and a second combination hole, the second combination hole and the first combination hole have a certain interval and Located on the outside of the first combination hole, the first combination hole is connected with the first end of the lever arm of the middle suspension through a bolt or a pin, and the second combination hole is connected with the rear through a bolt or a pin. The first end of the suspension thrust lever is connected, the middle part of the middle suspension lever arm is connected with the first suspension rear support through a bolt or a pin, and the second end of the middle suspension lever arm is connected through a bolt or a pin. The pin is connected with the top of the second air spring, the second end of the rear suspension thrust lever is connected with the first end of the rear suspension lever arm through a bolt or a pin, the rear suspension lever arm The middle part of the lever arm is connected with the second suspension rear support through bolts or pins, and the second end of the rear suspension lever arm is connected with the top of the third air spring through bolts or pins.

The above patent application only addresses the passability of the semi-trailer vehicle and the grounding performance of the suspension system, but still does not address the smoothness of the suspension system, reducing the vibration generated when the vehicle is running, and improving the comfort and handling stability of the vehicle. Secondly, it has not solved that the weight of the existing semi-trailer suspension system is too heavy and cannot adapt to the development of lightweight semi-trailers.

Utility model content

In view of the above technical problems, the utility model provides a lightweight European-style semi-trailer air suspension system.

In order to solve the technical problem and achieve the above-mentioned purpose, the technical scheme adopted by the present utility model is:

A lightweight European-style semi-trailer air suspension system is characterized in that it includes a guide arm bracket assembly 2, a guide arm pin shaft 3, a guide arm protection sheet 4, a guide arm assembly 5, a shock absorber 6, and a U-bolt 7. Guide arm upper cover 8, shock absorber lower pin 9, axle upper bracket assembly 10, axle lower bracket 11, U-bolt nut 12, shock absorber upper pin 14, air spring assembly into 15 components;

The guide arm bracket assembly is fixedly connected to the vehicle frame, and the axle upper bracket assembly and the vehicle axle lower bracket are fixedly connected to the vehicle axle;

The front end of the guide arm assembly is hinged with the guide arm bracket assembly 2 through its own rubber bushing and the guide arm pin shaft respectively. The under-axle bracket is matched and fixed on the axle, and the rear end of the guide arm assembly is connected with the bottom of the air spring assembly;

The upper end of the shock absorber 6 is hinged to the guide arm bracket assembly 2 through the upper pin 14 of the shock absorber, and the lower end of the shock absorber is hinged to the axle upper bracket assembly 10 through the upper pin 9 of the shock absorber , the shock absorber is inclined relative to the frame and trailer axle assembly;

The bottom of the air spring assembly is coupled to the rear end of the guide arm assembly, and the upper end of the air spring assembly is coupled to the frame.

Furthermore, in the present invention, a positioning hole is processed in the middle of the guide arm assembly.

Further, in the present invention, a positioning pin is processed on the upper bracket of the axle, and the guide arm assembly is positioned and installed in cooperation with the positioning hole through the positioning pin.

The guide arm protection sheet is located below the guide arm assembly, the lower plane of the guide arm protection sheet is positioned and matched with the upper bracket of the axle through the positioning pin, and the upper plane of the guide arm protection sheet is positioned through the guide arm upper cover plate 8 .

The working principle of the utility model is:

When the vehicle is running normally, the impact force generated by the uneven road surface is first transmitted to the left and right guide arm assemblies through the wheel and axle assemblies. At this time, the left and right guide arm assemblies drive the left and right airbag assemblies, the left and right shock absorbers and the left and right The rubber bushing of the guide arm assembly rotates, compresses and stretches the left and right airbag assemblies and the left and right shock absorbers, so that the impact force from the road is attenuated and then transmitted to the frame, thereby ensuring the smoothness of the ride and the cargo. security.

Compared with the prior art, the beneficial effects of the present utility model are shown in:

1. The utility model can effectively absorb the vibration generated when the vehicle is running, protect the transported items, and is especially suitable for the transport of hazardous chemicals and cold chain transport vehicles;

2. The utility model adopts the topology optimization design method to make it 15kg lighter than the same kind of air suspension single axle.

Description of drawings

Fig. 1 is the sectional schematic diagram of the utility model;

Fig. 2 is the structural representation of the utility model;

Fig. 3 is the structural schematic diagram of the bracket assembly on the axle;

The reference signs are: 1 is the frame, 2 is the guide arm bracket assembly, 3 is the guide arm pin, 4 is the guide arm protection sheet, 5 is the guide arm assembly, 6 is the shock absorber, 7 is the U-shaped bolt , 8 is the upper cover plate of the guide arm, 9 is the lower pin of the shock absorber, 10 is the upper bracket assembly of the axle, 11 is the lower bracket assembly of the axle, 12 is the U-shaped bolt and nut, 13 is the axle, 14 is the upper pin of the shock absorber, 15 is the bearing airbag assembly, 10a is the upper bracket of the axle, and 10b is the positioning pin.

Detailed ways

The present invention will be further described below with reference to the embodiments. The described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other used embodiments obtained by those of ordinary skill in the art without making creative work all belong to the protection scope of the present invention.

Referring to Figures 1 to 3, a lightweight European-style semi-trailer air suspension system includes a guide arm bracket assembly 2 fixedly connected to the frame, a guide arm assembly 5, and an axle upper bracket fixedly connected to the axle The seat assembly 10 and the axle lower bracket assembly 11, the shock absorber 6 hinged with the axle upper bracket and the axle lower bracket, and the load-bearing airbag assembly connected with the rear end of the guide arm assembly. Weld the guide arm bracket assembly 2 to the frame 1 in advance, weld the axle upper bracket assembly 10 and the axle lower bracket 11 to the axle 13, and then place the middle positioning hole of the guide arm assembly 5. To the positioning pin of the bracket assembly 10 on the axle, at this time, it is connected with the four U-shaped bolts and nuts 12 through the U-shaped bolt 7; The shaft 3 is connected to the guide arm bracket assembly 2; the shock absorber 6 is installed obliquely relative to the frame and axle assembly 13, and the upper end of the shock absorber is connected to the guide arm bracket assembly through the shock absorber upper pin 14 2, the lower end of the shock absorber is connected to the axle upper bracket assembly 10 through the shock absorber lower pin 9, the bottom of the air spring assembly 15 is respectively connected to the rear end of the guide arm assembly 5, and the upper end is connected onto frame 1.

The positioning pin 10b is located on the upper bracket 10a of the vehicle axle, and the positioning pin 10b is in interference fit with the upper bracket 10a of the vehicle axle. The guide arm assembly is positioned and installed through the positioning pin and the positioning hole, and the guide arm protection sheet is positioned and matched with the bracket on the axle through the positioning pin. U-shaped bolts and nuts connect the upper bracket of the axle, the guide arm, the protective sheet of the guide arm, and the lower bracket of the axle in sequence.

In the utility model, the rubber bushing of the guide arm assembly mainly plays the role of a rotating pair, which makes the axle as the center of rotation when it jumps up and down, and can bear part of the deformation under working conditions such as roll, so that the suspension can be rotated. The reliability and smoothness of the rack system are higher.

The utility model is a light-weight European-style semi-trailer air suspension system, and the left and right sides are symmetrical, so most of the devices involved include left and right parts.

Claims (4)

1. A light European semitrailer air suspension system is characterized by comprising a guide arm support assembly (2), a guide arm pin shaft (3), a guide arm protection plate (4), a guide arm assembly (5), a shock absorber (6), a U-shaped bolt (7), a guide arm upper cover plate (8), a shock absorber lower pin shaft (9), an axle upper bracket assembly (10), an axle lower bracket (11), a U-shaped bolt nut (12), a shock absorber upper pin shaft (14) and an air spring assembly (15);

the guide arm bracket assembly is fixedly connected to the vehicle frame, and the vehicle axle upper bracket assembly and the vehicle axle lower bracket are fixedly connected to the vehicle axle;

the front end of the guide arm assembly is hinged with the guide arm bracket assembly through a rubber bushing and a guide arm pin shaft respectively, the middle part of the guide arm assembly is fixed on an axle in a matching way through a U-shaped bolt, an axle upper bracket and an axle lower bracket, and the rear end of the guide arm assembly is connected with the bottom of the air spring assembly;

the upper end of the shock absorber (6) is hinged to the guide arm support assembly (2) through a shock absorber upper pin shaft (14), the lower end of the shock absorber is hinged to an axle upper bracket assembly (10) through a shock absorber lower pin shaft (9), and the shock absorber is inclined relative to the frame and the trailer axle assembly;

the bottom of the air spring assembly is connected with the rear end of the guide arm assembly, and the upper end of the air spring assembly is connected to the frame.

2. The air suspension system of a light-weight European semitrailer of claim 1, wherein a locating hole is formed in the middle of the guide arm assembly.

3. The air suspension system of a light-weight European-type semitrailer according to claim 1, characterized in that a positioning pin is machined on the axle upper bracket, and the guide arm assembly is matched with the positioning hole through the positioning pin and is positioned and installed.

4. The air suspension system of a light-weight European semitrailer of claim 1, wherein the guide arm protection plate is positioned below the guide arm assembly, the lower plane of the guide arm protection plate is in positioning fit with the axle upper bracket through a positioning pin, and the upper plane of the guide arm protection plate is positioned through the guide arm upper cover plate.

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