CN212098317U

CN212098317U - Reliable suspension system of semitrailer

Info

Publication number: CN212098317U
Application number: CN202020794362.3U
Authority: CN
Inventors: 王光文; 王小涵
Original assignee: Shandong Ronghao Special Purpose Automobile Co ltd
Current assignee: Shandong Ronghao Special Purpose Automobile Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2020-12-08
Anticipated expiration: 2030-05-14

Abstract

The utility model discloses a reliable suspension system of a semitrailer, which comprises two symmetrical supporting seats fixedly arranged on an axle, wherein spring connecting seats are respectively and fixedly arranged on the front side and the rear side of the axle on the supporting seats, air springs are respectively arranged on the spring connecting seats, and the upper ends of the air springs are connected with a frame; two buffering guide arms are symmetrically and rotatably arranged on the frame, and the free ends of the buffering guide arms are fixedly connected with the spring connecting seats on the corresponding sides; shock absorbers are respectively connected between the middle parts of the two supporting seats and the frame; the lateral thrust main seat is rotatably installed in the middle of the axle, the frame is rotatably installed with two symmetrically arranged lateral thrust auxiliary seats, the lateral thrust auxiliary seats are respectively and fixedly provided with a lateral thrust rod, and the end parts of the two lateral thrust rods are fixedly connected with the lateral thrust main seat. The utility model discloses alleviate and strike effectually, compact structure is reliable, and stability is good.

Description

Reliable suspension system of semitrailer

Technical Field

The utility model relates to a vehicle hangs technical field, especially relates to a reliable type suspension of semitrailer.

Background

The suspension system is an important component of the automobile and mainly mounts the axle on the frame in an elastic manner so as to achieve the effects of relieving the impact load of the road and improving the smoothness of the automobile. The air spring can better buffer the impact load of the road surface, reduce the damage to the road surface and improve the comfort due to the ideal nonlinear elastic characteristic, so the air spring is more and more applied in the fields of trailers, passenger cars and the like.

At present, an air suspension system on a semitrailer mostly adopts a double-air-spring structure, and double air springs are matched with a shock absorber to realize buffering. The structure only comprises two air springs, so that the average impact load of the air springs is large, a part of the impact load needs to be absorbed by the shock absorber, and for the semitrailer with large load at ordinary times, the service lives of the air springs and the shock absorber are short, and the reliability is poor. Further, since the number of air springs and dampers is limited, the reduction of the road surface impact load is not particularly preferable, and the comfort is slightly poor. Although an air suspension system adopting four air springs is available, the four air springs occupy a large space near an axle due to the fact that the single bodies of the air springs are relatively large in size, and other stabilizing mechanisms cannot be arranged or can only be simply arranged, so that the stability of the air suspension system is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a reliable type suspension of semitrailer that compact structure is reliable, relaxes to strike effectually and stability is good is provided.

In order to solve the technical problem, the technical scheme of the utility model is that: the reliable suspension system of the semitrailer comprises two supporting seats which are symmetrically and fixedly arranged on an axle, wherein spring connecting seats are respectively and fixedly arranged on the front side and the rear side of the axle on the supporting seats, air springs are respectively arranged on the spring connecting seats, and the upper ends of the air springs are connected with a frame; two buffer guide arms capable of swinging up and down are symmetrically and rotatably arranged on the frame, and the free ends of the buffer guide arms are fixedly connected with the supporting seats on the corresponding sides; shock absorbers are respectively connected between the middle parts of the two supporting seats and the frame; the lateral thrust main seat is rotatably installed in the middle of the axle, the frame is rotatably installed with two symmetrically arranged lateral thrust auxiliary seats, the lateral thrust auxiliary seats are respectively and fixedly provided with a lateral thrust rod, and the end parts of the two lateral thrust rods are fixedly connected with the lateral thrust main seat.

As an optimized technical scheme, the supporting seat is fixedly arranged at the lower end of the axle, and arc-shaped supporting arms connected with the two spring connecting seats are respectively fixedly arranged on the front side and the rear side of the supporting seat.

Preferably, the maximum outer diameter of the air spring close to the buffer guide arm is larger than the maximum outer diameter of the air spring far away from the buffer guide arm.

As a preferable technical scheme, the lateral thrust rod is arranged in an upwardly arched arc shape.

According to the preferable technical scheme, a swing stabilizing connecting rod is arranged on one side, away from the buffering guide arm, of the vehicle axle on the vehicle frame, and elastic stabilizing rods hinged with the two supporting seats are respectively arranged at two ends of the swing stabilizing connecting rod.

By adopting the technical scheme, the reliable suspension system of the semitrailer comprises two supporting seats which are symmetrically and fixedly arranged on an axle, wherein spring connecting seats are respectively and fixedly arranged on the front side and the rear side of the axle on the supporting seats, air springs are respectively arranged on the spring connecting seats, and the upper ends of the air springs are connected with a frame; two buffer guide arms capable of swinging up and down are symmetrically and rotatably arranged on the frame, and the free ends of the buffer guide arms are fixedly connected with the supporting seats on the corresponding sides; shock absorbers are respectively connected between the middle parts of the two supporting seats and the frame; the lateral thrust main seat is rotatably installed in the middle of the axle, the frame is rotatably installed with two symmetrically arranged lateral thrust auxiliary seats, the lateral thrust auxiliary seats are respectively and fixedly provided with a lateral thrust rod, and the end parts of the two lateral thrust rods are fixedly connected with the lateral thrust main seat. Install air spring respectively at front side and rear side on the supporting seat, can form the four-point support to the axle altogether, it is effectual that the relaxation of the impact that the axle receives of four-point centering portion. The shock absorber is arranged in the middle of the supporting seat, is relatively small in impact and is convenient to realize balanced force application, and the shock absorber is matched with the air springs on the front side and the rear side to realize good impact relaxation. The end parts of the lateral thrust rods are connected through the lateral thrust main seat, so that good lateral thrust is realized, the width of a lateral thrust structure is reduced, the arrangement of a stable structure is realized, the structure is compact and reliable, and the stability is good.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

fig. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is a schematic perspective view of another view angle according to an embodiment of the present invention.

In the figure: 1-vehicle bridge; 2-a support seat; 21-spring connection seat; 22-an arcuate support arm; 3, an air spring; 4-buffering the guide arm; 5-a shock absorber; 6-lateral thrust main seat; 61-side thrust pair seat; 62-lateral thrust rod; 7-a swing stabilizing connecting rod; 71-elastic stabilizer bar.

Detailed Description

The invention is further explained below with reference to the drawings and examples. In the following detailed description, exemplary embodiments of the invention are described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

As shown in fig. 1 and 2, the reliable suspension system of a semitrailer includes two pairs of supporting seats 2 fixed on an axle 1 symmetrically, and conventionally, the supporting seats 2 are respectively arranged at the left end and the right end of the axle 1. The fixing arrangement is implemented using a bolt assembly, which is well known to those skilled in the art and will not be described herein.

The front side and the rear side of the axle 1 on the supporting seat 2 are respectively and fixedly provided with a spring connecting seat 21, the spring connecting seats 21 are respectively provided with an air spring 3, and the upper end of the air spring 3 is connected with the frame. Two air springs 3 are respectively arranged on each supporting seat 2, four-point support can be formed in the embodiment, the axle 1 is supported in the middle, the overall buffering effect is improved, and the effect of alleviating road surface impact is good.

Two buffer guide arms 4 capable of swinging up and down are symmetrically and rotatably arranged on the frame, and the free ends of the buffer guide arms 4 are fixedly connected with the supporting seat 2 on the corresponding side. When the axle 1 is impacted by the road surface, the buffer guide arm 4 guides the upward movable buffer path of the axle 1, so that the axle 1 is prevented from being unstable due to the impact of the road surface. Conventionally, the buffer guide arm 4 is rotatably installed at the front side of the axle 1, and the free end of the buffer guide arm 4 and the support seat 2 are fixedly connected together through a bolt assembly.

Shock absorbers 5 are respectively connected between the middle parts of the two supporting seats 2 and the frame. The four-point air spring 3 can realize stable elastic buffering, and the impact load of the shock absorber 5 is obviously reduced. Because of the guiding function of the buffer guide arm 4, the present embodiment only needs to form elastic shock absorption between the two air springs 3, and a good shock absorption effect can be achieved. Thus, the shock absorber 5 on each side of the present embodiment is matched with two air springs 3, so that a good effect of alleviating ground impact can be achieved.

In this embodiment, the supporting seat 2 is fixedly arranged at the lower end of the axle 1, and the front side and the rear side of the supporting seat 2 are respectively and fixedly provided with an arc-shaped supporting arm 22 connected with the two spring connecting seats 21. The arc-shaped supporting arm 22 can counteract the reaction force of a part of the air spring 3, improve the bending resistance and reduce the deformation. Meanwhile, a larger space is formed between the arc-shaped supporting arm 22 and the axle 1, so that enough installation space can be provided for the shock absorber 5, and the selection and the use of the shock absorbers 5 in various models are facilitated.

Preferably, the maximum outer diameter of the air spring 3 near the damper guide arm 4 is larger than the maximum outer diameter of the air spring 3 far from the damper guide arm 4. Because the guide path of the buffer guide arm 4 is arc-shaped, when the air spring 3 is impacted by the road surface, the deformation of the air spring 3 close to the buffer guide arm 4 is smaller than that of the air spring 3 far from the buffer guide arm 4. This embodiment will be close to buffering guide arm 4 air spring 3's the biggest external diameter sets up great, two in front and back air spring 3 warp the back, and the big air spring 3 of the biggest external diameter warp for a short time, and effective diameter changes for a short time, and the little air spring 3 of the biggest external diameter warp greatly, and effective diameter changes for a long time, and the final effective diameter difference between them diminishes, does benefit to the both ends of supporting seat 2 form comparatively balanced elastic buffer power, reduces the unbalance loading, does benefit to stable in structure.

This embodiment side thrust owner seat 6 is installed in the rotation of axle 1's middle part, the vice seat 61 of side thrust that two symmetries set up is installed in the rotation on the frame, the fixed side thrust pole 62 that is equipped with respectively, two on the vice seat 61 of side thrust the tip of side thrust pole 62 with side thrust owner seat 6 fixed connection sets up, two like this side thrust pole 62 is through one side thrust owner seat 6 can be right when axle 1 skew carries out stability control, reduces the whole width of side thrust structure, has realized the installation of space department between air spring 3, compact structure is reliable.

In this embodiment, the lateral thrust rod 62 is arranged in an upward arched arc shape, when the axle 1 is impacted by a road surface, the lateral thrust main seat 6 is impacted upwards along with the axle 1 due to the impact, and the arc-shaped lateral thrust rod 62 can also counteract a part of the upward impact force, so that the bending resistance is improved, and the deformation is reduced.

In addition, in this embodiment, a swing stabilizing link 7 is disposed on one side of the vehicle frame, which is away from the buffering guide arm 4, of the vehicle axle 1, and two ends of the swing stabilizing link 7 are respectively provided with an elastic stabilizer bar 71 hinged to the two supporting seats 2. When one side of the axle 1 is impacted by the road surface, the supporting seat 2 at the side is lifted upwards along with the impact, the swing stabilizing connecting rod 7 is bent upwards, the swing stabilizing connecting rod 7 is twisted, the upward lifting amplitude of the supporting seat 2 is reduced by the twisting reaction force and the elastic force of the elastic stabilizing rod 71, and the stability of the axle 1 is further improved.

In this embodiment, the air springs 3 are respectively installed on the front side and the rear side of the support seat 2, so that four-point support for the axle 1 can be formed, and the effect of alleviating the impact on the middle axle 1 by four points is good. The shock absorber 5 is arranged in the middle of the supporting seat 2, is relatively small in impact and is convenient to realize balanced force application, and the shock absorber 5 is matched with the air springs 3 on the front side and the rear side to realize good shock mitigation. The end parts of the lateral thrust rods 62 are connected through one lateral thrust main seat 6, so that good lateral thrust is realized, the width of a lateral thrust structure is reduced, and the arrangement of a stable structure is realized. In the present embodiment, a flexible stabilizer bar 71 is further disposed on the other side of the axle 1, which further enhances the stability of the axle 1. The embodiment has compact and reliable integral structure and good stability.

The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Reliable type suspension of semitrailer, including the fixed supporting seat that sets up on the axle of two symmetries, its characterized in that: spring connecting seats are respectively fixedly arranged on the front side and the rear side of the axle on the supporting seat, air springs are respectively arranged on the spring connecting seats, and the upper ends of the air springs are connected with the frame; two buffer guide arms capable of swinging up and down are symmetrically and rotatably arranged on the frame, and the free ends of the buffer guide arms are fixedly connected with the supporting seats on the corresponding sides; shock absorbers are respectively connected between the middle parts of the two supporting seats and the frame; the lateral thrust main seat is rotatably installed in the middle of the axle, the frame is rotatably installed with two symmetrically arranged lateral thrust auxiliary seats, the lateral thrust auxiliary seats are respectively and fixedly provided with a lateral thrust rod, and the end parts of the two lateral thrust rods are fixedly connected with the lateral thrust main seat.

2. The reliable semitrailer suspension system of claim 1, wherein: the supporting seat is fixedly arranged at the lower end of the axle, and arc-shaped supporting arms connected with the two spring connecting seats are fixedly arranged on the front side and the rear side of the supporting seat respectively.

3. The reliable semitrailer suspension system of claim 1, wherein: the maximum outer diameter of the air spring close to the buffering guide arm is larger than the maximum outer diameter of the air spring far away from the buffering guide arm.

4. The reliable semitrailer suspension system of claim 1, wherein: the lateral thrust rod is arranged in an upward arched arc shape.

5. The reliable semitrailer suspension system of claim 1, wherein: and a swing stabilizing connecting rod is arranged on one side of the vehicle frame, which is far away from the buffering guide arm, of the vehicle axle, and two ends of the swing stabilizing connecting rod are respectively provided with an elastic stabilizing rod which is hinged with the two supporting seats.