Commercial vehicle cab rear suspension system with cross beam

Abstract

The utility model relates to a commercial vehicle cab rear suspension system with a cross beam. The commercial vehicle cab rear suspension system comprises the cross beam, a rear suspension lower support and a hydraulic lock. The cross beam is of an inverted U-shaped structure; two ends of the cross beam are respectively connected with the rear suspension lower bracket and the hydraulic lock; according to the utility model, the cross beam is additionally arranged on the basis of the rear suspension system of the commercial vehicle cab, so that the torsion resistance of the suspension system is improved, the riding comfort of the commercial vehicle is improved, and the fatigue feeling of a driver is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, in particular to a rear suspension system of a commercial vehicle cab with a crossbeam. Background Art

[0002] The cab suspension system is an extremely important component of the vibration reduction system of commercial vehicles, which is of great significance to ensure the safety, comfort and reliability of the vehicle. The existing cab rear suspension system is relatively complicated, the bracket is too bulky, it is not easy to operate during assembly, and it is costly. It is not advantageous in terms of ride comfort, light weight and cost. In order to ensure the superior vibration reduction performance and comfort of existing models, and at the same time achieve the requirements of light weight and cost reduction, a commercial vehicle cab rear suspension system with a crossbeam was designed and developed. Utility Model Content

[0003] The utility model aims to provide a commercial vehicle cab rear suspension system with a crossbeam in view of the deficiencies in the prior art.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] A commercial vehicle cab rear suspension system with a crossbeam comprises a crossbeam, a rear suspension lower bracket and a hydraulic lock; the crossbeam is an inverted U-shaped structure; and two ends of the crossbeam are respectively connected to the rear suspension lower bracket and the hydraulic lock.

[0006] Preferably, the crossbeam includes a tubular crossbeam and reinforcing brackets arranged at both ends of the tubular crossbeam; a plurality of crossbeam mounting holes are arranged on both sides of the reinforcing bracket.

[0007] Preferably, the rear suspension lower bracket includes a tubular column, a frame and a rear suspension shock absorber mounting bracket is arranged at the bottom of the tubular column, a hydraulic lock bracket is arranged at the top of the tubular column, and a bolt sleeve is arranged on the tubular column and below the hydraulic lock bracket.

[0008] Preferably, it also includes a rear suspension lock hook, a hydraulic lock, and a rear suspension shock absorber; the hydraulic lock is respectively provided with a hydraulic lock upper mounting hole, a hydraulic lock locking hook, and a hydraulic lock lower mounting hole; the rear suspension shock absorber is arranged between the hydraulic lock lower mounting hole and the frame and the rear suspension shock absorber mounting bracket; the rear suspension lock hook is arranged on the hydraulic lock locking hook, and the hydraulic lock bracket is arranged on the hydraulic lock upper mounting hole.

[0009] Preferably, the rear suspension lock hook includes a longitudinal beam connecting bracket, a lock bolt mounting bracket arranged at the bottom of the longitudinal beam connecting bracket, and a sleeve and a lock pin are arranged at the connection between the lock bolt mounting bracket and the hydraulic lock; the sleeve is provided with a taper, and the middle layer of the lock pin is provided with a rubber shock-absorbing layer.

[0010] Preferably, it also includes an expansion water tank bracket; the expansion water tank bracket is connected to the crossbeam mounting hole of the right reinforcing bracket.

[0011] Preferably, it also includes a T-shaped oil pipe bracket; the T-shaped oil pipe bracket is connected to the bolt sleeve on the left side.

[0012] Preferably, the rear suspension shock absorber is tangent to the hydraulic lock rotation circle.

[0013] Compared with the prior art, the utility model has the following beneficial technical effects:

[0014] The utility model provides a crossbeam, and the two ends of the crossbeam are respectively connected with a hydraulic lock and a rear suspension lower bracket; the torsion resistance of the suspension system is improved, the riding comfort of the commercial vehicle is improved, and the fatigue of the driver is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings:

[0016] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the beam structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the tubular column structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the rear suspension lock hook structure of the utility model;

[0021] Figure 6 This is a schematic diagram of the hydraulic lock structure of the utility model;

[0022] Figure 7 This is a schematic diagram of the structure of a T-shaped oil pipe support of the utility model;

[0023] Figure 8 This is a schematic diagram of the expansion water tank bracket structure of the utility model.

[0024] Description of reference numerals:

[0025] 1. Rear suspension lock hook; 2. Casing; 3. Locking pin; 4. Crossbeam; 5. Hydraulic lock; 5-1. Hydraulic lock upper mounting hole; 5-2. Hydraulic lock locking hook; 5-3. Hydraulic lock lower mounting hole; 6. T-type oil pipe bracket; 7. Rear suspension shock absorber; 8. Rear suspension lower bracket; 9. Frame; 10. Expansion water tank bracket; 11. Longitudinal beam connecting bracket; 12. Hydraulic lock bracket; 13. Bolt sleeve; 14. Tubular column; 15. Frame and rear suspension shock absorber mounting bracket; 16. Tubular crossbeam; 17. Reinforcement bracket; 17-1. Crossbeam mounting hole; 18. Lock bolt mounting bracket. DETAILED DESCRIPTION

[0026] like Figure 1-8 As shown: a commercial vehicle cab rear suspension system with a crossbeam, including a crossbeam 4, a rear suspension lower bracket 8 and a hydraulic lock 5; the crossbeam 4 is an inverted U-shaped structure; the two ends of the crossbeam 4 are respectively connected to the rear suspension lower bracket 8 and the hydraulic lock 5.

[0027] The cross beam 4 includes a tubular cross beam 16 and a reinforcement bracket 17 disposed at both ends of the tubular cross beam 16; a plurality of cross beam mounting holes 17-1 are disposed on both sides of the reinforcement bracket 17. Preferably, the stamping reinforcement bracket 17 of the cross beam 4 is welded with the tubular cross beam 16, and its function is to connect the left / right rear suspension lower bracket 8 and the left / right hydraulic lock 5 in series, on the one hand, to fix the oil pipe connection from the left to the right hydraulic lock 5, and on the other hand, to improve the torsion resistance of the suspension system.

[0028] The rear suspension lower bracket 8 includes a tubular column 14, a frame and rear suspension shock absorber mounting bracket 15 is arranged at the bottom of the tubular column 14, a hydraulic lock bracket 12 is arranged at the top of the tubular column 14, and a bolt sleeve 13 is arranged on the tubular column 14 and below the hydraulic lock bracket 12; the bottom of the frame and rear suspension shock absorber mounting bracket 15 is used for installation with the frame 9; preferably, the frame and rear suspension shock absorber mounting bracket 15, the hydraulic lock bracket 12 and the bolt sleeve 13 are welded to each other, and steel castings are used for the parts with greater force, and profiles are used for the other parts, which not only meets the strength requirements, but also improves the overall fatigue strength of the suspension system and achieves lightness.

[0029] It also includes a rear suspension lock hook 1, a hydraulic lock 5, and a rear suspension shock absorber 7; the hydraulic lock 5 is respectively provided with a hydraulic lock upper mounting hole 5-1, a hydraulic lock locking hook 5-2, and a hydraulic lock lower mounting hole 5-3; the rear suspension shock absorber 7 is arranged between the hydraulic lock lower mounting hole 5-3 and the frame and the rear suspension shock absorber mounting bracket 15 through a corresponding pin shaft; the rear suspension lock hook 1 is arranged on the hydraulic lock locking hook 5-2 through a locking pin 3, and the hydraulic lock bracket 12 is arranged on the hydraulic lock upper mounting hole 5-1 through a corresponding pin shaft; the upper end of the rear suspension lock hook 1 is used for fixed connection to the cab; preferably, the rear suspension shock absorber 7 is a coil spring shock absorber provided with a spring, which suppresses the shock when the spring rebounds after absorbing vibration and absorbs the energy of road impact, thereby playing a role in alleviating impact.

[0030] The rear suspension shock absorber 7 is tangent to the rotation circle of the hydraulic lock 5; under full load, the hydraulic lock 5 is in a horizontal state, which is more conducive to obtaining better comfort.

[0031] The rear suspension lock hook 1 includes a longitudinal beam connection bracket 11, a lock bolt mounting bracket 18 arranged at the bottom of the longitudinal beam connection bracket 11, and a sleeve 2 and a lock pin 3 are arranged at the connection between the lock bolt mounting bracket 18 and the hydraulic lock 5. The sleeve 2 is provided with a taper, and the middle layer of the lock pin 3 is provided with a rubber shock-absorbing layer; preferably, the rear suspension lock hook 1 adopts a steel plate integral stamping part; the sleeve 2 is made of nylon; the taper design of the sleeve 2 itself can prevent the hydraulic lock 5 from moving, and play a good limiting role. The middle layer of the lock pin 3 is provided with a rubber shock-absorbing layer, which has a certain shock-absorbing effect and more effectively solves the abnormal noise generated by the hydraulic lock and the lock bolt.

[0032] The expansion tank bracket 10 is also included; the expansion tank bracket 10 is connected to the crossbeam mounting hole 17-1 of the right reinforcing bracket 17. Preferably, the expansion tank bracket 10 is a steel plate integral stamping part, and is connected to the crossbeam mounting hole 17-1 of the right reinforcing bracket 17, the hydraulic lock bracket 12, and the bolt sleeve 13; the integrated design is more conducive to the compact arrangement of chassis components.

[0033] It also includes a T-shaped oil pipe bracket 6; the T-shaped oil pipe bracket 6 is connected to the bolt sleeve 13 on the left side; preferably, 120° flanges are provided at both ends of the T-shaped oil pipe bracket 6, which solves the problem of interference between the hydraulic oil pipe connected to the hydraulic lock 5 and the rear suspension body of the cab, making the pipeline run smoothly.

Claims

1. A commercial vehicle cab rear suspension system with a crossbeam, characterized in that: It comprises a crossbeam (4), a rear suspension lower bracket (8) and a hydraulic lock (5); the crossbeam (4) is an inverted U-shaped structure; two ends of the crossbeam (4) are respectively connected to the rear suspension lower bracket (8) and the hydraulic lock (5); The crossbeam (4) comprises a tubular crossbeam (16) and reinforcing brackets (17) arranged at both ends of the tubular crossbeam (16); a plurality of crossbeam mounting holes (17-1) are arranged on both sides of the reinforcing bracket (17).

2. The commercial vehicle cab rear suspension system with a crossbeam as claimed in claim 1, characterized in that: The rear suspension lower bracket (8) comprises a tubular column (14), a vehicle frame and a rear suspension shock absorber mounting bracket (15) is arranged at the bottom of the tubular column (14), a hydraulic lock bracket (12) is arranged at the top of the tubular column (14), and a bolt sleeve (13) is arranged on the tubular column (14) and below the hydraulic lock bracket (12).

3. The commercial vehicle cab rear suspension system with a crossbeam as claimed in claim 2, characterized in that: The invention also comprises a rear suspension lock hook (1), a hydraulic lock (5), and a rear suspension shock absorber (7); the hydraulic lock (5) is respectively provided with a hydraulic lock upper mounting hole (5-1), a hydraulic lock locking hook (5-2), and a hydraulic lock lower mounting hole (5-3); the rear suspension shock absorber (7) is arranged between the hydraulic lock lower mounting hole (5-3) and the vehicle frame and the rear suspension shock absorber mounting bracket (15); the rear suspension lock hook (1) is arranged on the hydraulic lock locking hook (5-2), and the hydraulic lock bracket (12) is arranged on the hydraulic lock upper mounting hole (5-1).

4. The commercial vehicle cab rear suspension system with a crossbeam as claimed in claim 3, characterized in that: The rear suspension lock hook (1) comprises a longitudinal beam connecting bracket (11), a lock bolt mounting bracket (18) arranged at the bottom of the longitudinal beam connecting bracket (11), and a sleeve (2) and a lock pin (3) arranged at the connection between the lock bolt mounting bracket (18) and the hydraulic lock (5); the sleeve (2) is provided with a taper, and the middle layer of the lock pin (3) is provided with a rubber shock-absorbing layer.

5. The commercial vehicle cab rear suspension system with a crossbeam as claimed in claim 1, characterized in that: It also includes an expansion water tank bracket (10); the expansion water tank bracket (10) is connected to the crossbeam mounting hole (17-1) of the right reinforcing bracket (17).

6. The commercial vehicle cab rear suspension system with a crossbeam as claimed in claim 2, characterized in that: It also includes a T-shaped oil pipe bracket (6); the T-shaped oil pipe bracket (6) is connected to the bolt sleeve (13) on the left side.

7. The commercial vehicle cab rear suspension system with a crossbeam as claimed in claim 3, characterized in that: The rear suspension shock absorber (7) is tangent to the rotation circle of the hydraulic lock (5).

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