CN218858090U

CN218858090U - Airbag connecting plate and air suspension with same

Info

Publication number: CN218858090U
Application number: CN202222470696.7U
Authority: CN
Inventors: 马玉磊; 李兆杰; 牛宝晗; 梁浩; 李永春; 宋振国
Original assignee: Shandong Ruiyang Automobile Technology Co ltd
Current assignee: Shandong Ruiyang Automobile Technology Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-04-14
Anticipated expiration: 2032-09-19

Abstract

The utility model discloses the sky has opened the air suspension of an gasbag connecting plate and applied this connecting plate, solves among the prior art vehicle turning in-process problem that gasbag incline and vehicle incline appear. The air bag connecting plate is characterized in that the air bag connecting plate is a steel plate stamping part, and mounting holes for fixing air bags are formed in the flange parts. According to the technology, the air bag ends of the guide arms on the left side and the right side of the trailer axle are connected into a whole, and the air bag connecting plate, the guide arms and the axle form a frame, so that in the turning process of a running vehicle, the two air bag ends of the guide arms on the left side and the right side of the trailer axle are changed into two air bags from original respective stress to simultaneous stress, and thus the stress of castings and U-shaped bolts connected with the guide arms and the trailer axle is reduced, and the problems of air bag deflection, vehicle deflection and the like after the vehicle runs for a certain time or a certain distance are prevented or delayed.

Description

Airbag connecting plate and air suspension with same

Technical Field

The utility model relates to a semitrailer air suspension technical field, concretely relates to an air bag connecting plate for trailer air suspension to and use the air suspension of this connecting plate.

Background

The semitrailer air suspension structure on the market at present is that the trailer axle left and right sides respectively has a leading arm, and the leading arm front side is connected with the leading arm leg welded on the frame, and the leading arm rear side lug connection gasbag. That is, the airbag is mounted directly to the guide arm, i.e., the airbag sits directly behind the guide arm, as is conventional in the design and manufacture of the industry. In this connection, reference may be made to at least the following technical documents:

in CN210478326U document, by the disclosed air suspension leading arm gasbag support module of Shandong ann Bo machinery, including leading arm body and gasbag body, be connected with the gasbag mount pad on the outer wall of leading arm body rear end, be connected with the gasbag undersetting on the gasbag mount pad roof, the gasbag undersetting includes first connecting plate and first linking bridge, all cut a hole on gasbag mount pad and the first connecting plate roof and have first screw hole, the gasbag undersetting passes through first locking bolt fixed connection on gasbag mount pad roof, all cut a hole on first connecting plate roof and the gasbag body diapire and have the third screw hole, the gasbag body passes through third locking bolt fixed connection on first connecting plate roof.

CN206106864U discloses a rear axle lifting air suspension for a heavy-duty tractor, which comprises an air suspension big bracket fixedly connected with a frame assembly, a V-shaped upper reaction rod, an I-shaped lower reaction rod guide mechanism, a lifting air bag, a bearing air bag and a stabilizer bar; the lifting air bag is provided with one lifting air bag and is arranged in the middle position right in front of the rear axle assembly, the upper end of the lifting air bag is connected with the rear axle assembly through an upper lifting air bag bracket, and the lower end of the lifting air bag is connected with the frame assembly; the bearing airbags are symmetrically arranged in the front and the rear of the rear axle assembly, the upper ends of the bearing airbags are connected with the frame assembly, and the lower ends of the bearing airbags are connected with the rear axle assembly; the transverse stabilizer bar is arranged behind the rear axle assembly, one end of the transverse stabilizer bar is hinged with the supporting arm beam, and the other end of the transverse stabilizer bar is hinged with the suspension arm support.

In the technical scheme, the air bags are directly and fixedly installed with the guide arms, and the air bags on the two guide arms are not physically or spatially mechanically connected. It is known that balloons are flexible bodies, which act semi-flexibly even in the inflated state. And the air bag used in the air suspension is limited by the structure, and has a remarkable bearing directivity, namely, the air bag has good bearing capacity in the axial direction (vertical direction and gravity direction) and poor bearing capacity in the horizontal direction, which is the reason why the air bag is easy to deform laterally when the vehicle turns and cannot play an auxiliary role. Meanwhile, because the horizontal bearing capacity of the air bag is poor, and the mounting point of the air bag is positioned at the rear cantilever end of the guide arm, referring to fig. 1, during the turning process of the vehicle, the guide arms at the left side and the right side can only respectively realize the torque support during the turning process by virtue of the guide arm brackets, each casting connected with the trailer axle and the U-shaped bolt, so that the design is not friendly to the vehicle (especially a heavy-duty vehicle). The reason is that the guide arms on the left side and the right side of the trailer axle are stressed respectively in the turning process of the vehicle, and the stress is larger under the heavy load condition of the vehicle, so that the deformation of each casting connected with the trailer axle and the U-shaped bolt is easily caused, the deflection of an air bag and the deflection of the vehicle are caused, and the service life of the vehicle is shortened.

Improvements are therefore needed to overcome the problems of air bag deflection and vehicle deflection during vehicle cornering and to further increase the overall stiffness of the air suspension.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides an air suspension of gasbag connecting plate and applied this connecting plate solves among the prior art problem that gasbag incline and vehicle incline appear among the vehicle turning process.

The utility model provides a technical scheme that its technical problem adopted does:

the air bag connecting plate is characterized by being a steel plate stamping part, and the flange part is provided with a mounting hole for fixing an air bag.

Furthermore, a flanging is arranged at the stamping edge of the transition connecting part.

Furthermore, reinforcing ribs are welded on the surface of the transition connecting part.

Furthermore, the transition connecting part is bent into a rectangular section and welded into a hollow structure.

Further, the air bag connecting plate is provided with a hollow part.

Further, the hollowed-out part is preferably a punched round hole.

Further, the mounting hole is a round hole or/and a long hole.

The air suspension with the air bag connecting plate is characterized in that the guide arm supporting plate is installed on an axle, the guide arm is installed on the guide arm supporting plate, the guide arm cover plate is installed on the guide arm, the U-shaped bolt is installed on the guide arm cover plate and penetrates through the guide arm supporting plate and the axle supporting plate from top to bottom and is fixed, the air bag connecting plate is fixed and connected with the end of the rear suspension arm of the guide arm, the air bag connecting plate is a steel plate stamping part consisting of flange parts at two ends and a middle transition connecting part, mounting holes for fixing air bags are formed in the two flange parts, and a group of air bag and air bag lower mounting plate assemblies are fixed on each flange part respectively.

Furthermore, the transition connecting part is provided with a flanging or/and an angle steel reinforcing rib.

Further, the mounting hole is a round hole or/and a long hole.

Has the advantages that: the technology starts from improving rigidity, introduces the concept of the airbag connecting plate, connects the airbag ends of the guide arms at the left side and the right side of the trailer axle into a whole, and the airbag connecting plate, the guide arms and the axle form a frame, so that the two airbag ends of the guide arms at the left side and the right side of the trailer axle are changed into two airbags simultaneously stressed from the original respective stress in the turning process of a running vehicle, the stress of each casting connected with the trailer axle and a U-shaped bolt is reduced, the problems of airbag deflection, vehicle deflection and the like after the vehicle runs for a certain time or a certain distance are prevented or delayed, and the service life of the air suspension trailer is greatly prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an air suspension before modification.

Fig. 2 is a structural view of an airbag connecting plate.

FIG. 3 is a top view of an airbag attachment panel.

Fig. 4 is a cross-sectional view AA of fig. 3.

Fig. 5 is one of the modifications of the airbag attachment panel.

Fig. 6 shows a second modification of the airbag connecting plate.

Fig. 7 shows a third modification of the airbag connecting plate.

Fig. 8 is an air suspension to which the connection plate is applied.

Fig. 9 is an installation view of fig. 8.

In the figure:

100 a cover plate of a guide arm, wherein,

200 are guided by the arm support plate and are,

300 the supporting plate of the axle is arranged on the vehicle,

400 the guide arm is arranged on the base plate,

the axle of the vehicle 500 is provided with a plurality of wheels,

a 600U-shaped bolt is arranged on the upper surface of the shell,

700 air bags, 710 air bag lower mounting plates,

800 connecting plates, 811 round holes, 812 long holes, 821 flanging, 822 angle steel and 823 hollow out.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

An air suspension structure before improvement is shown in fig. 1, in the structure, as an optional implementation mode, a guide arm supporting plate 200 is firstly installed on a corresponding position of an axle 500, a guide arm 400 is installed on the guide arm supporting plate, a guide arm cover plate 100 is installed on the guide arm 400, a U-shaped bolt 600 is installed on the guide arm cover plate 100, the guide arm supporting plate 100 penetrates through from top to bottom, a nut of the U-shaped bolt is screwed after the axle supporting plate 300 is installed, and finally an air bag 700 is installed, namely the lower end of the air bag 700 is fixed on the guide arm 400 in a bolt, nut and screw fastening mode, so that the assembly of the structure can be completed.

This embodiment is as prior art's improvement, under the transformation prerequisite that current air suspension major structure did not implement big subversion, solves the problem that exists in the background art through structural design. Referring to fig. 2-7, the present invention provides an air bag connecting plate for trailer air suspension, as an optional embodiment, the connecting plate 800 is formed by stamping a steel plate with a thickness of 2 mm, and as a whole, the contour of the connecting plate is a dumbbell contour, that is, the connecting plate is composed of flange portions at two ends and a middle transitional connecting portion, wherein, mounting holes are provided on the flange portions at two ends, the mounting holes at the positions can be round holes or strip holes, and can also be a combination of round holes and strip holes, for example, as illustrated in fig. 3, the mounting hole on the flange portion at the left side is a round hole 811, and the mounting hole on the flange portion at the right side is a strip hole 812, wherein the existence of the strip hole can improve the installation convenience of the air bag, so as to eliminate the adverse effect caused by errors in the assembling process, and the design has stronger assemblability. Transitional coupling portion is arranged in the space between two flange portions, and is integrative stamping forming with flange portion, and this transitional coupling portion designs turn-ups 821, and turn-ups pattern refers to 4, fig. 5, fig. 6, can be the unilateral turn-ups, also can be two side turn-ups, all is in the utility model discloses an within the scope of protection. Referring to fig. 7, the transition connection portion may also be bent and welded into a box-shaped structure, which may further improve the connection strength. Further, referring to fig. 4 and 5, angle steel 822 may be disposed and welded on a lower surface of the transition connection portion to serve as a reinforcing rib, thereby improving rigidity and torsional strength of the portion.

In order to further reduce the dead weight, the spaced fretwork 823 that sets up on foretell connecting plate, the preferred punching press round hole of this fretwork, and through position, size and the interval of computer simulation design fretwork for this connecting plate is got and is chosen between light and high strength rationally.

The mounting process of the connecting plate is as follows:

firstly, left and right guide arms and relative connecting castings are fixed at corresponding positions of a trailer axle by U-shaped bolts, referring to the description of the relevant process of the second section of the embodiment, then an air bag connecting plate 800 is arranged at the rear end of the guide arms, then an air bag 700 and air bag lower mounting plate 710 combination is arranged on the air bag connecting plate, finally, relative bolts, nuts and screws are locked, after fastening is completed, the air bag connecting plate 800 forms reinforced connection at the bottoms of the two air bags, in the turning process of a vehicle, the two air bags and the rear suspension arm ends of the two guide arms form mechanical connection, the two air bag ends of the left and right guide arms are changed into two air bags 700 from respective original stress, and the stress of the castings and the U-shaped bolts connected with the trailer axle is reduced.

As a common knowledge, the top portions of the two airbags are fixedly connected to the car sill frame, so that the airbags are elastically supported between the car and the axle, and finally the installation of the two airbags is completed.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements of the present invention may be made by those skilled in the art without departing from the spirit of the present invention.

Claims

1. The air bag connecting plate is characterized by being a steel plate stamping part, and the flange part is provided with a mounting hole for fixing an air bag.

2. The airbag connecting plate as claimed in claim 1, wherein the stamped edge of the transition connecting portion is provided with a flange.

3. The airbag connecting plate according to claim 2, wherein a reinforcing rib is welded to a surface of the transition connection portion.

4. The airbag connecting plate of claim 3, wherein the transition connecting portion is bent to have a rectangular cross section and welded to have a hollow structure.

5. The airbag connecting plate according to claim 1, wherein the airbag connecting plate is provided with a hollow.

6. The airbag connection panel of claim 5, wherein the cut-outs are preferably punched circular holes.

7. The airbag connecting plate according to claim 1, wherein the mounting hole is a round hole or/and a long hole.

8. The air suspension with the air bag connecting plate is characterized in that the guide arm supporting plate is installed on an axle, the guide arm is installed on the guide arm supporting plate, the guide arm cover plate is installed on the guide arm, the U-shaped bolt is installed on the guide arm cover plate and penetrates through the guide arm supporting plate and the axle supporting plate from top to bottom and is fixed, the air bag connecting plate is fixed and connected with the end of the rear suspension arm of the guide arm, the air bag connecting plate is a steel plate stamping part consisting of flange parts at two ends and a middle transition connecting part, mounting holes for fixing air bags are formed in the two flange parts, and a group of air bag and air bag lower mounting plate assemblies are fixed on each flange part respectively.

9. The air suspension with an air bag connecting plate according to claim 8, wherein the transition connection is provided with a flange and/or an angle steel reinforcement.

10. The air suspension with an airbag connecting plate as claimed in claim 8, wherein the mounting hole is a circular hole or/and a long hole.