CN106347454A - Middle supporting shaft assembly for vehicle - Google Patents

Abstract

The invention relates to a middle support shaft assembly for a vehicle, which belongs to the technical field of auto parts and includes a shaft beam assembly. The shaft beam assembly includes a curved beam, a shaft tube and a shaft head. In the middle of the assembly, the curved beam is connected with a single airbag lifting bracket, and the shaft head is located at the end of the shaft-beam assembly, and the shaft head is connected with an active steering mechanism. The invention has the advantages of adopting segmented structure and single air bag lifting structure, which can simplify the structure of the lifting system, realize active steering, reduce tire wear and improve the performance of the whole supporting shaft assembly.

Description

A middle support shaft assembly for a vehicle

technical field

The invention relates to a vehicle center support shaft assembly, which belongs to the technical field of auto parts and is especially suitable for commercial vehicle transmission systems.

Background technique

In recent years, with the increase of automobile fuel prices and the increasing emphasis on environmental protection, commercial vehicle users have higher and higher requirements for vehicle lightweight and fuel-saving performance. Therefore, the liftable support shaft is applied to heavy trucks. The reason is that, under no-load or light-load conditions, after the support shaft is lifted, running resistance can be reduced, tire wear can be reduced, fuel consumption can be reduced, and ride comfort of the vehicle can be improved; and, due to no-load or light-load After the supporting shaft is lifted, the pressing force of the drive axle to the ground can be increased, and the adhesion between the wheel and the ground can be improved.

At present, the commonly used lifting shafts mainly have the following problems: 1. Most of the common lifting shafts use the four-link guide mechanism to carry out the lifting operation. There are many disadvantages such as large number of parts, complicated manufacturing, high cost, and difficult maintenance; 2. Most of the existing lifting shafts adopt follow-up steering structure, which has a large turning radius and serious tire wear; 3. Most of the existing lifting shafts are equipped with steel plates The spring suspension cannot well isolate the impact, vibration and noise of the road surface, and it is increasingly unable to meet the needs of commercial vehicle users in terms of the comfort, handling and safety of the vehicle.

Contents of the invention

In order to solve the above technical deficiencies, the present invention provides a vehicle center support shaft assembly, which adopts a segmented structure and a single airbag lifting structure, which can simplify the structure of the lifting system, and can realize active steering, which can reduce tire wear , Improve the performance of the entire support shaft assembly.

The technical solution of the present invention is as follows: a central support shaft assembly for a vehicle, including an axle beam assembly, the axle beam assembly includes a curved beam, an axle tube and an axle head, and the curved beam is located in the middle of the axle beam assembly , the curved beam is connected with a single airbag lifting bracket, the shaft head is located at the end of the shaft beam assembly, and the shaft head is connected with an active steering mechanism.

The technical solution of the present invention also includes: the active steering mechanism includes a steering tie rod assembly, the left end of the steering tie rod assembly is connected to the steering machine through a connecting assembly, and the right end of the steering tie rod assembly is connected to the steering power steering through a connecting assembly Cylinder connection.

The technical solution of the present invention also includes: the connecting assembly includes a steering knuckle, the steering knuckle is connected with the shaft head, and a steering tie rod arm and a steering knuckle arm are installed on the steering knuckle, and the steering tie rod arm is connected with the steering tie rod. The steering knuckle arm is connected with the steering gear or the power steering cylinder.

The technical solution of the present invention also includes: the middle part of the steering tie rod assembly includes a bent part matched with the shape of the bent beam.

The technical solution of the present invention also includes: the left end of the steering tie rod assembly is connected to the steering tie rod arm through a connecting clip, and the right end of the steering tie rod assembly is connected to the steering tie rod arm through a fastening joint.

The technical solution of the present invention also includes: an air suspension support is connected above the shaft tube, and a combined bracket is connected below the shaft tube.

The technical solution of the present invention further includes: the combined bracket includes a thrust rod installation surface and a shock absorber installation surface, the shock absorber installation surface is located at the front side, and the thrust rod installation surface is located at the rear side.

The technical solution of the present invention further includes: the side part of the air suspension support includes an arc-shaped installation part matched with the axle tube, and the air suspension is installed on the top of the air suspension support.

The technical solution of the present invention also includes: the left end of the curved beam is connected with a shaft tube, the left end of the shaft tube is connected with a shaft head, the shaft head is provided with a mounting hole, the right end of the curved beam is connected with a shaft tube, and the right end of the shaft tube is connected A shaft head is arranged, and a mounting hole is arranged on the shaft head.

The beneficial effects of the present invention are: the use of segmented structure and single airbag lifting structure can avoid the problems of using two sets of lifting airbags to inflate to push open the four-link guide mechanism to achieve lifting, the existing problems of large number of parts, complicated manufacturing and high cost, The structure of the lifting system can be simplified; moreover, the active steering mechanism can be designed to realize the active steering of the central support shaft assembly, which can reduce the turning radius and tire wear, thereby improving the performance of the entire support shaft assembly.

Description of drawings

Figure 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the axle-beam assembly of the present invention.

Fig. 3 is a schematic diagram of the combined bracket.

Figure 4 is a schematic diagram of an air suspension mount.

In the figure: 1. Shaft beam assembly, 11. Bending beam, 12. Shaft tube, 13. Shaft head, 14. Air suspension support, 15. Combined bracket, 151. Thrust rod installation surface, 152. Shock absorber Installation surface, 16. Single airbag lifting bracket, 17. Mounting hole, 2. Steering knuckle arm, 3. Steering tie rod arm, 4. Steering knuckle, 5. Steering tie rod assembly, 51. Fastening joint, 52. Connection Clamp, 6, air suspension.

detailed description

The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.

A vehicle center support shaft assembly of the present invention adopts a single airbag lifting structure, can be matched with an air suspension system, can realize active steering, realize the installation of shock absorbers and thrust rods, and can improve the performance and operating conditions of the vehicle. Meet the requirements of vehicle users.

As shown in FIG. 1 , a vehicle center support axle assembly of the present invention includes an axle beam assembly 1 , a steering knuckle 4 , a steering knuckle arm 2 , a steering tie rod arm 3 and a steering tie rod assembly 5 . Among them, steering knuckle 4, steering knuckle arm 2, steering tie rod arm 3 and steering tie rod assembly 5 form an active steering mechanism. The active steering mechanism is designed to include a tension structure on the left side and a thrust structure on the right side. The pull structure can reduce the steering resistance and make the steering lighter and more responsive. Specifically, the steering knuckle 4 is connected with the shaft heads 13 located at both ends of the axle-beam assembly 1 through pin shafts, the tie rod arm 3 and the steering knuckle arm 2 are stacked on the lower mounting surface of the steering knuckle 4, and the tie rod arm 3 and the The steering tie rod assembly 5 is connected, the steering knuckle arm 2 on the left side is connected to the steering machine, and the steering machine is used to apply active steering force to the steering structure, and the steering knuckle arm 2 on the right side is connected to the steering power cylinder, and the power steering cylinder is used to The steering structure applies active steering thrust.

In the embodiment of the present invention, the tie rod assembly 5 is designed as a structure with one end fixed and one end movable, that is, the left end of the tie rod assembly 5 is connected to the tie rod arm 3 through a connecting clip 52, and the tie rod assembly The right end of 5 is connected with the steering tie rod arm 3 through the fastening joint 51, and the adjustment of the toe-in can be completed only by adjusting the length of one side of the steering tie rod.

In order to ensure no interference with the transmission shaft, the steering tie rod assembly 5 is adaptively designed, even if the middle part of the steering tie rod assembly 5 includes a curved portion matching the shape of the curved beam 11 .

As shown in Figure 2, the shaft-beam assembly 1 adopts a segmented structure, including a curved beam 11, a shaft tube 12 and a shaft head 13. The curved beam 11 is located in the middle of the shaft-beam assembly 1, and a single The airbag lifting bracket 16 adopts a single airbag lifting structure, which can avoid the problems of using two sets of lifting airbags to inflate to open the four-bar linkage guide mechanism to achieve lifting. The problems of large number of parts, complicated manufacturing and high cost can simplify the structure of the lifting system; Moreover, the lifting and lowering of the central support shaft assembly can be realized through the inflation and deflation of the airbag, which can effectively reduce the fuel consumption of the whole vehicle and reduce tire wear.

The shaft head 13 is located at the end of the axle-beam assembly 1. Specifically, the left end of the curved beam 11 is connected to the shaft tube 12, and the left end of the shaft tube 12 is connected to the shaft head 13. similarly, the right end of the curved beam 11 is also connected with a shaft tube 12, and the right end of the shaft tube 12 is connected with a shaft head 13, and the shaft head 13 is provided with a mounting hole 17 connected with the steering knuckle 4.

The top of the shaft tube 12 is connected with an air suspension support 14, as shown in Figure 4, the side of the air suspension support 14 includes an arc-shaped installation part matched with the shaft tube 12, and the top of the air suspension support 14 is installed Air suspension 6 is arranged, and the other end of air suspension 6 is installed on the vehicle frame. The bottom of the shaft tube 12 is connected with a combined bracket 15, as shown in Figure 3, the combined bracket 15 includes a thrust rod mounting surface 151 and a shock absorber mounting surface 152, a shock absorber is installed on the shock absorber mounting surface 152, and a shock absorber is installed on the thrust rod The longitudinal stabilizing thrust rod is installed on the mounting surface 151, which not only realizes the horizontal and vertical fixation of the center bearing shaft assembly, but also realizes the requirement that the whole vehicle can match the air suspension, and effectively improves the vehicle operation state. Specifically, the shock absorber installation surface 152 is located at the front side of the entire vehicle frame, and the thrust rod installation surface 151 is located at the rear side of the entire vehicle frame.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in this within the scope of protection of the invention.

Claims (9)

1. support axle assembly in a kind of vehicle, includings bloster assembly (1) it is characterised in that: described bloster assembly (1) inclusion is curved Beam (11), central siphon (12) and spindle nose (13), described camber beam (11) is located at the middle part of bloster assembly (1), and camber beam (11) is connected with list Airbag lift support (16), described spindle nose (13) is located at the end of bloster assembly (1), and spindle nose (13) is connected with active steering machine Structure.

2. as claimed in claim 1 in a kind of vehicle supporting axle assembly it is characterised in that: described active steering mechanism includes Track rod assembly (5), the left end of described track rod assembly (5) is connected with steering wheel by coupling assembly, turns to horizontal The right-hand member of rod assembly (5) is connected with steering cylinder by coupling assembly.

3. as claimed in claim 2 in a kind of vehicle supporting axle assembly it is characterised in that: described coupling assembly include turn to Section (4), described knuckle (4) is connected with spindle nose (13), and knuckle (4) is provided with track rod lever (3) and knuckle arm (2), described track rod lever (3) is connected with track rod assembly (5), described knuckle arm (2) and steering wheel or steering Power-assisted oil cylinder connects.

4. as claimed in claim 3 in a kind of vehicle supporting axle assembly it is characterised in that: described track rod assembly (5) middle part includes the turn of bilge closing with camber beam (11) matching form.

5. as claimed in claim 4 in a kind of vehicle supporting axle assembly it is characterised in that: described track rod assembly (5) left end is connected with track rod lever (3) by jointing clip (52), and the right-hand member of track rod assembly (5) passes through tightly Affixed head (51) is connected with track rod lever (3).

6. in described a kind of vehicle as arbitrary in claim 1 to 5 supporting axle assembly it is characterised in that: described central siphon (12) Top be connected with air suspension bearing (14), the lower section of central siphon (12) is connected with sectional shelf-unit (15).

7. as claimed in claim 6 in a kind of vehicle supporting axle assembly it is characterised in that: described sectional shelf-unit (15) includes Distance rod installed surface (151) and amortisseur installed surface (152), described amortisseur installed surface (152) is located at front side, described distance rod Installed surface (151) is located at rear side.

8. as claimed in claim 6 in a kind of vehicle supporting axle assembly it is characterised in that: described air suspension bearing (14) Sidepiece include the arc installation portion that coordinates with central siphon (12), the top of air suspension bearing (14) is provided with air suspension (6).

9. as claimed in claim 1 in a kind of vehicle supporting axle assembly it is characterised in that: the left end of described camber beam (11) is even It is connected to central siphon (12), the left end of central siphon (12) is connected with spindle nose (13), spindle nose (13) is provided with installing hole (17), camber beam (11) Right-hand member be connected with central siphon (12), the right-hand member of central siphon (12) is connected with spindle nose (13), spindle nose (13) is provided with installing hole (17).