CN206155066U - Freight train and linkage structure of transaxle and follow -up bridge thereof - Google Patents

Abstract

The utility model discloses a linkage structure of transaxle and follow -up bridge, it includes frame, transaxle, follow -up bridge, leaf spring suspension, air suspension and loading sensing proportioning valve, the transaxle passes through the leaf spring suspension and installs on the frame, the follow -up bridge passes through the air suspension and installs on the frame, loading sensing proportioning valve locates and distinguishes fixed connection between frame and the transaxle and with frame and transaxle, and loading sensing proportioning valve leads to the gasbag intercommunication of air through tube way and air suspension. Implement the utility model discloses a linkage structure of transaxle and follow -up bridge had both improved the whole travelling comfort of vehicle, had satisfied the requirement of bearing of vehicle again, but also can reduce the dead weight of vehicle itself and the inordinate wear of reduction tire. Additionally, the utility model also discloses a freight train that uses the linkage structure of above -mentioned transaxle and follow -up bridge.

Description

Linkage Structure of Freight Car and Its Drive Axle and Follower Axle

technical field

The utility model relates to the technical field of vehicles, in particular to a truck and a linkage structure of a drive axle and a follower axle.

Background technique

Among the suspension systems of existing truck axles, one is to adopt a traditional leaf spring suspension structure, and the other is to adopt an air suspension structure. The leaf spring suspension itself is heavy, which is easy to increase the weight of the vehicle, and the leaf spring will bend differently under different loads, resulting in the distance from the frame to the ground always changing, so the overall comfort is poor. The rigidity of the airbag of the air suspension structure can be automatically adjusted according to the road conditions, and the cushioning effect on vibration and impact is obvious, ensuring the smooth driving of the truck, and the overall comfort is good, but the truck with the air suspension has very strict requirements on the tonnage of the cargo. Cargo exceeding the required tonnage will cause serious damage to the air suspension, greatly reducing the service life of the air suspension, and the cost of using the air suspension is relatively high.

Utility model content

The purpose of the utility model is to provide a truck with both comfort and load capacity and the linkage structure of its drive axle and follower axle.

In order to achieve the above object, the utility model provides a linkage structure of a drive axle and a tag axle, which includes a vehicle frame, a drive axle, a tag axle, a leaf spring suspension, an air suspension, and a load-sensing proportional valve; The driving axle is installed on the vehicle frame through the leaf spring suspension; the follower axle is installed on the vehicle frame through the air suspension; the load-sensing proportional valve is arranged on the vehicle frame and the vehicle frame. between the driving axles and are respectively fixedly connected with the vehicle frame and the driving axle, and the load sensing proportional valve communicates with the air bag of the air suspension through an air pipeline.

In the above-mentioned linkage structure of the driving axle and the tag axle, the load sensing proportional valve includes a valve body and a rocker arm assembly, the valve body is installed on the frame, and one end of the rocker arm assembly is connected to the The other end of the rocker arm assembly is connected to the drive axle, and the valve body communicates with the air bag of the air suspension through an air pipeline.

In the above-mentioned linkage structure of the drive axle and the follower axle, the vehicle frame includes a longitudinal beam and a beam fixedly connected to the longitudinal beam, the rocker arm assembly is connected to the middle part of the drive axle, and the valve body installed on the beam.

In the linkage structure of the drive axle and the tag axle described above, the drive axle includes a drive axle case, and the rocker arm assembly is connected to the drive axle case through bolts.

In the above-mentioned linkage structure of the driving axle and the tag axle, the frame is provided with an air storage tank and a protection valve, and the load-sensing proportional valve communicates with the protection valve and the air storage tank sequentially through an air pipeline.

In order to achieve the same purpose, the utility model also provides a truck, which includes the linkage structure of the drive axle and the tag axle described in any one of the above contents.

Carrying out the linkage structure of the truck of the utility model and its driving axle and the follower axle has the following advantages relative to the prior art:

The drive axle of the utility model is installed on the vehicle frame through the leaf spring suspension, which can meet the load requirements of the vehicle, and the cost will not be too high; the follower axle is installed on the vehicle frame through the air suspension, which can improve the overall comfort of the vehicle It can also reduce the self-weight of the vehicle itself; detect the distance change between the driving axle and the frame through the load-sensing proportional valve, and convert the distance change into the control of the airbag stiffness of the air suspension, so that the driving axle and the vehicle frame The two tag axles are loaded evenly, keeping the frame at the same height as the ground, realizing the linkage control of the drive axle and tag axle, which not only improves the comfort of the vehicle, but also reduces the abnormal wear of the tires.

Description of drawings

Fig. 1 is the schematic diagram of the linkage structure of drive axle and follower axle of the present utility model;

Among them, 1. Frame; 11. Longitudinal beam; 12. Beam; 2. Drive axle; 3. Follower bridge; 4. Leaf spring suspension; 5. Air suspension; 6. Load-sensing proportional valve; 61. Valve Body; 62, rocker arm assembly; 7, airbag.

detailed description

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

As shown in Figure 1, the preferred embodiment of the present utility model is a linkage structure of a drive axle and a follower bridge, which includes a vehicle frame 1, a drive axle 2, a follower bridge 3, a leaf spring suspension 4, an air suspension 5 and the load-sensing proportional valve 6; the driving axle 2 is installed on the frame 1 through the leaf spring suspension 4; the follower axle 2 is installed on the frame 1 through the air suspension 5; the load-sensing proportional valve 6 is installed on the frame 1 Between it and the drive axle 2 and fixedly connected with the vehicle frame 1 and the drive axle 2 respectively, the load sensing proportional valve 6 communicates with the air bag 7 of the air suspension 5 through the air pipeline. The drive axle 2 of this embodiment is installed on the vehicle frame 1 through the leaf spring suspension 4, which can meet the load requirements of the vehicle, and the cost will not be too high; the follower axle 3 is installed on the vehicle frame 1 through the air suspension 5, The overall comfort of the vehicle can be improved, and the self-weight of the vehicle itself can be reduced; the distance change between the driving axle 2 and the vehicle frame 1 is detected by the load sensing proportional valve 6, and the distance change is converted into a change in the air suspension 5 The control of the stiffness of the airbag 7 is to balance the load on the drive axle 2 and the tag axle 3, keep the height of the vehicle frame 1 consistent with the ground, and realize the linkage control of the drive axle 2 and the tag axle 3, thereby not only improving the The comfort of the vehicle, but also reduce the abnormal wear of the tires.

In this embodiment, the load-sensing proportional valve 6 includes a valve body 61 and a rocker arm assembly 62, the valve body 61 is installed on the vehicle frame 1, one end of the rocker arm assembly 62 is connected to the valve body 61, and the rocker arm assembly 62 The other end is connected with the drive axle 2, and the valve body 61 communicates with the air bag 7 of the air suspension 5 through the air pipeline. Specifically, when the distance between the drive axle 2 and the vehicle frame 1 changes, the rocker arm assembly 62 deflects to a certain extent relative to the valve body 61 and controls the pressure change in the valve body 61, while the valve body 61 and the air suspension The air bag 7 of the frame 5 is connected, so the pressure in the air bag 7 will change with the change of the pressure in the valve body 61, and the rigidity of the air bag 7 will be adjusted accordingly, so that the drive axle 2 and the follower axle 3 are two The latter is balanced by the load, thereby realizing the linkage control of the drive axle 2 and the follower axle 3 .

In this embodiment, the vehicle frame 1 includes a longitudinal beam 11 and a cross beam 12 fixedly connected with the longitudinal beam 11 , the rocker arm assembly 62 is connected with the middle part of the driving axle 2 , and the valve body 61 is installed on the cross beam 12 . This is because in some road conditions, the distance between the two ends of the drive axle 2 and the vehicle frame 1 will be inconsistent, and the rocker arm assembly 62 is connected to the middle of the drive axle 2, and a load-sensing proportional valve is used. 6 Controlling the stiffness of the two airbags 7 of the air suspension 5 can achieve the best linkage control effect, saving control costs.

In this embodiment, the drive axle 2 includes a drive axle housing, and the rocker arm assembly 62 is connected to the drive axle housing through bolts, so that the load-sensing proportional valve 6 can accurately detect the change in the distance between the drive axle 2 and the vehicle frame 1, Thereby, the linkage control of the drive axle 2 and the tag axle 3 can be better realized.

In this embodiment, the frame 1 is provided with an air storage tank and a protection valve, and the load-sensing proportional valve 6 communicates with the protection valve and the air storage tank sequentially through the gas pipeline. Specifically, when the vehicle is running, when the load-sensing proportional valve 6 detects the height change between the drive axle 2 and the vehicle frame 1, the compressed air enters the protection valve from the air storage tank, and enters the load-sensing proportional valve 6 after passing through the protection valve, thereby The load-sensing proportional valve 6 can convert the height change into a pressure change, and control the pressure in the air bag 7 of the air suspension 5, so as to achieve the purpose of linkage control between the drive axle 2 and the tag axle 3 .

In addition, this embodiment also provides a truck using the linkage structure of the drive axle and the tag axle. The freight car in this embodiment has the characteristics of good overall comfort, strong load capacity and less abnormal tire wear.

The above are only preferred embodiments of the present utility model, and it should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of the present utility model, some improvements and replacements can also be made. These improvements and replacements It should also be regarded as the protection scope of the present utility model.

Claims (6)

1. A linkage structure of a drive axle and a tag axle, characterized in that it comprises a vehicle frame, a drive axle, a tag axle, a leaf spring suspension, an air suspension and a load-sensing proportional valve; the drive axle passes through the The leaf spring suspension is installed on the vehicle frame; the tag axle is installed on the vehicle frame through the air suspension; the load sensing proportional valve is arranged between the vehicle frame and the driving axle It is fixedly connected with the vehicle frame and the drive axle respectively, and the load-sensing proportional valve communicates with the air bag of the air suspension through an air pipeline. 2. The linkage structure of the drive axle and the tag axle according to claim 1, wherein the load-sensing proportional valve includes a valve body and a rocker arm assembly, the valve body is installed on the vehicle frame, One end of the rocker arm assembly is connected to the valve body, the other end of the rocker arm assembly is connected to the drive axle, and the valve body communicates with the air bag of the air suspension through an air pipeline. 3. The linkage structure of the driving axle and the tag axle according to claim 2, characterized in that, the vehicle frame includes a longitudinal beam and a cross beam fixedly connected with the longitudinal beam, and the rocker arm assembly is connected with the The middle part of the drive axle is connected, and the valve body is installed on the beam. 4. The linkage structure of the driving axle and the tag axle according to claim 2, wherein the driving axle comprises a driving axle housing, and the rocker arm assembly is connected to the driving axle housing through bolts. 5. The linkage structure of the driving axle and the tag axle according to claim 1, characterized in that, the frame is provided with an air storage tank and a protection valve, and the load sensing proportional valve communicates with the protection valve through an air pipeline. , and the air storage tanks are sequentially connected. 6. A truck, characterized by comprising the linkage structure of the drive axle and the tag axle according to any one of claims 1-5.