Three-point supporting type double-steering commercial vehicle front balanced suspension system

Abstract

The utility model relates to a three-point supporting type double-steering commercial vehicle front balance suspension system which comprises a first front shaft suspension and a second front shaft suspension which are arranged on a vehicle frame, a balance mechanism is arranged between the first front shaft suspension and the second front shaft suspension, and the first front shaft suspension, the balance mechanism and the second front shaft suspension form a three-point supporting type structure. The balance mechanism comprises a balance arm shock absorber, a triangular balance arm, a first balance arm limit, a plate spring middle support and a second balance arm limit, the upper end of the plate spring middle support is connected with the frame, and the lower end of the plate spring middle support is hinged to the triangular balance arm through a balance arm middle pin shaft. A first balance arm limit and a second balance arm limit are arranged on the two sides of the plate spring middle support. The front end of the triangular balance arm is hinged to the balance arm shock absorber, the first front shaft suspension and the second front shaft suspension. The utility model solves the problem of non-uniform load between two shafts, reduces tire wear, and improves the running reliability and safety of a vehicle.

Description

TECHNICAL FIELD

[0001] The utility model relates to commercial vehicle suspension technical field especially relates to a three point support formula double -steering commercial vehicle front balance suspension system. BACKGROUND

[0002] At present, the front suspension of double-steering front axle commercial vehicle (such as 8x4, 6x2 etc. vehicle type), mostly adopts two separate steel plate spring suspension in the frame, and there is no force transmission between two axles, when driving on uneven road, it can cause partial wheel suspension or overload. The adhesion of double front axle vehicle type steering wheel to ground will become smaller with the vertical load on wheel, and even lose adhesion when serious, greatly reduce the steering stability of automobile. At the same time, the load reduction of one wheel will inevitably cause other adjacent wheel to bear more load, cause other wheel overload or tire wear seriously, these phenomena reduce the reliability and driving safety of vehicle. SUMMARY

[0003] The utility model aims at the insufficient of prior art to provide a three point support formula double -steering commercial vehicle front balance suspension system, solve the problem of uneven load between two axles, reduce tire wear, improve vehicle driving reliability and safety.

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

[0005] A three point support formula double -steering commercial vehicle front balance suspension system, including front axle suspension and front two axle suspension arranged in the frame, balance mechanism is arranged between the front axle suspension and the front two axle suspension, and the front axle suspension, balance mechanism and front two axle suspension form three point support formula structure;

[0006] The balance mechanism includes balance arm shock absorber, triangular balance arm, balance arm first limit, plate spring intermediate support and balance arm second limit, the upper end of the plate spring intermediate support is connected with the frame, the lower end of the plate spring intermediate support is hinged with the triangular balance arm through balance arm intermediate pin shaft, and balance arm first limit and balance arm second limit are arranged on the both sides of the plate spring intermediate support;The front end of the triangular balance arm is hinged with the balance arm shock absorber and the front axle suspension, and the rear end of the triangular balance arm is hinged with the front two axle suspension;The balance arm shock absorber is connected with the frame through shock absorber support.

[0007] Further, the triangular balance arm is provided with hinged holes A, B and C for installing balance arm intermediate pin shaft, one axle balance axle pin shaft and two axle balance arm pin shaft.

[0008] Furthermore, the front axle suspension includes a front spring front bracket, a leaf spring, a hanger, and a steering axle; one end of the leaf spring is hinged to the front spring front bracket, the other end of the leaf spring is hinged to the hanger, one end of the hanger is hinged to the leaf spring, and the other end of the hanger is hinged to the triangular balance arm and the balance arm damper via a balance shaft pin; the upper end of the leaf spring is provided with a leaf spring pressure plate, the lower end of the leaf spring is provided with a steering axle, the leaf spring pressure plate is connected to the steering axle via a U-bolt, the steering axle is provided with a lower damper bracket, the frame is provided with an upper damper bracket, and a damper is connected between the lower damper bracket and the upper damper bracket.

[0009] Furthermore, the vehicle frame is provided with an axle limiting bracket, and the upper end of the axle leaf spring pressure plate is provided with an axle limiting block. The axle limiting bracket, the axle limiting block and the steering axle are coaxially arranged.

[0010] Furthermore, metal bushings are provided at the hinges of the front spring front bracket and the first-axis leaf spring, the first-axis leaf spring and the first-axis hanger, the first-axis hanger and the triangular balance arm and the balance arm damper.

[0011] Furthermore, the front two-axle suspension includes a front spring rear bracket, two-axle leaf springs, two-axle hangers, and a steering two-axle; the upper end of the two-axle hanger is hinged to the front spring rear bracket, the lower end of the two-axle hanger is hinged to the two-axle leaf spring, one end of the two-axle leaf spring is hinged to the two-axle hanger, and the other end of the two-axle leaf spring is hinged to the triangular balance arm via a two-axle balance arm pin. The upper end of the two-axle leaf spring is provided with a two-axle leaf spring pressure plate, and the lower end of the two-axle leaf spring is provided with a steering two-axle. The two-axle leaf spring pressure plate is connected to the steering two-axle via a two-axle U-bolt. The steering two-axle is provided with a two-axle shock absorber lower bracket, and the vehicle frame is provided with a two-axle shock absorber upper bracket. The two-axle shock absorber is connected between the two-axle shock absorber lower bracket and the two-axle shock absorber upper bracket.

[0012] Furthermore, the vehicle frame is provided with a two-axle limiting bracket, and the upper end of the two-axle leaf spring pressure plate is provided with a two-axle limiting block. The two-axle limiting bracket, the two-axle limiting block and the steering two-axle are coaxially arranged.

[0013] Furthermore, metal bushings are provided at the hinge points of the dual-axis lifting lug and the front spring rear bracket, the dual-axis lifting lug and the dual-axis leaf spring, and the dual-axis leaf spring and the triangular balance arm.

[0014] Furthermore, the two-axis leaf spring and the one-axis leaf spring are asymmetrical structures, and the front spring front bracket, the leaf spring middle bracket and the front spring rear bracket form a three-point support structure.

[0015] Furthermore, the shaft load ratio N1 / N2 between the steering shaft and the axial shaft is approximately 1.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] Front spring front support, leaf spring middle support and front spring rear support form three-point support type structure, through balance mechanism connects adjacent steering axle and axle two, solve the problem of uneven load distribution of front axle suspension and front two axle suspension, make each steering axle braking force more uniform, improve vehicle performance, reduce the impact load on axle when passing uneven road, increase the balance arm shock absorber and triangular balance arm, further improve the stress condition of balance mechanism key point, improve vehicle reliability;

[0018] Through axle shock absorber and two axle shock absorber, alleviate the impact of road on chassis, improve the comfort of driver and passenger; Two axle leaf spring and one axle leaf spring are asymmetric structure, satisfy load distribution and increase chassis installation space. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is structure schematic diagram of the utility model;

[0020] Figure 2 It is structure schematic diagram of balance mechanism in the utility model;

[0021] Figure 3 It is structure schematic diagram of triangular balance arm in the utility model;

[0022] Figure 4 It is working state diagram of front axle suspension in the utility model;

[0023] Figure 5 It is working state diagram of front two axle suspension of utility model.

[0024] REFERENCE NUMERALS

[0025] 1. Chassis; 2. Front spring front bracket; 3. First axle leaf spring; 4. First axle limit bracket; 5. First axle limit block; 6. First axle shock absorber upper bracket; 7. First axle shock absorber; 8. Shock absorber bracket; 9. Balance arm shock absorber; 10. Balance arm first limit; 11. Leaf spring intermediate bracket; 12. Balance arm second limit; 13. Second axle leaf spring; 14. Second axle limit bracket; 15. Second axle shock absorber upper bracket; 16. Second axle shock absorber; 17. Front spring rear bracket; 18. Second axle hanger; 19. Second axle shock absorber lower bracket; 20. Steering. 21. Two-axis U-bolt; 22. Two-axis limiting block; 23. Two-axis leaf spring pressure plate; 24. Two-axis balance arm pin; 25. Triangular balance arm; 251. Hinge hole A; 252. Hinge hole B; 253. Hinge hole C; 26. Balance arm center pin; 27. One-axis balance arm pin; 28. One-axis hanger lug; 29. ​​One-axis shock absorber lower bracket; 30. One-axis U-bolt; 31. Steering axle; 32. One-axis leaf spring pressure plate; 501. Front axle suspension; 502. Front two-axis suspension; 503. Balancing mechanism. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0027] Example 1

[0028] like Figures 1-3 As shown, a three-point support dual-steering commercial vehicle front balance suspension system includes a front axle suspension 501 and a front second axle suspension 502 mounted on the vehicle frame 1. A balance mechanism 503 is provided between the front axle suspension 501 and the front second axle suspension 502. The front axle suspension 501, the balance mechanism 503, and the front second axle suspension 502 form a three-point support structure.

[0029] The balancing mechanism 503 includes a balance arm damper 9, a triangular balance arm 25, a first balance arm limiter 10, a leaf spring intermediate bracket 11, and a second balance arm limiter 12. The upper end of the leaf spring intermediate bracket 11 is connected to the vehicle frame 1, and the lower end of the leaf spring intermediate bracket 11 is hinged to the triangular balance arm 25 through a balance arm intermediate pin 26. The leaf spring intermediate bracket 11 has a first balance arm limiter 10 and a second balance arm limiter 12 on both sides. The front end of the triangular balance arm 25 is hinged to the balance arm damper 9 and the front axle suspension 501, and the rear end of the triangular balance arm 25 is hinged to the front second axle suspension 502. The balance arm damper 9 is connected to the vehicle frame 1 through a damper bracket 8.

[0030] The triangular balance arm 25 is provided with the hinged holes A251, C253 and B252 for mounting the middle pin 26, the one-axis balance arm pin 27 and the two-axis balance arm pin 24.

[0031] The triangular balance arm 25 in the balance mechanism 503 is triangular in shape, and the body of the triangular balance arm 25 is arc-shaped. The plate spring middle support 11 is hinged to the hinged hole A251 of the triangular balance arm 25, the one-axis lug 28 is hinged to the hinged hole C253 of the triangular balance arm 25, the two-axis plate spring 13 is hinged to the hinged hole B252 of the triangular balance arm 25, and the three hinged points of the hinged hole A251, the hinged hole C253 and the hinged hole B252 of the triangular balance arm 25 form a plane, so that the balance mechanism 503 has better stability and reliability.

[0032] The front one-axis suspension 501 includes the front spring front support 2, the one-axis plate spring 3, the one-axis lug 28 and the steering one-axis 31. One end of the one-axis plate spring 3 is hinged to the front spring front support 2, the other end of the one-axis plate spring 3 is hinged to the one-axis lug 28, one end of the one-axis lug 28 is hinged to the one-axis plate spring 3, and the other end of the one-axis lug 28 is hinged to the triangular balance arm 25 and the balance arm shock absorber 9 through the one-axis balance arm pin 27. The upper end of the one-axis plate spring 3 is provided with the one-axis plate spring pressing plate 32, the lower end of the one-axis plate spring 3 is provided with the steering one-axis 31, the one-axis plate spring pressing plate 32 and the steering one-axis 31 are connected through the one-axis U-shaped bolt 30, the steering one-axis 31 is provided with the one-axis shock absorber lower support 29, the vehicle frame 1 is provided with the one-axis shock absorber upper support 6, and the one-axis shock absorber lower support 29 and the one-axis shock absorber upper support 6 are connected with the one-axis shock absorber 7.

[0033] The vehicle frame 1 is provided with the one-axis limiting support 4, the upper end of the one-axis plate spring pressing plate 32 is provided with the one-axis limiting block 5, and the one-axis limiting support 4, the one-axis limiting block 5 and the steering one-axis 31 are coaxially arranged.

[0034] The hinged parts of the front spring front support 2, the one-axis plate spring 3, the one-axis plate spring 3, the one-axis lug 28, the one-axis lug 28, the triangular balance arm 25 and the balance arm shock absorber 9 are provided with metal bushings.

[0035] The one-axis balance arm pin 27 of the balance mechanism 503 connects the one-axis plate spring 3 and the one-axis lug 28 into one body, and the one-axis balance arm pin 27 extends along the axial direction to connect the shock absorber support 8 of the balance arm shock absorber 9, so that the balance mechanism 503 has higher integration.

[0036] The front two-axis suspension 502 includes the front spring rear support 17, the two-axis plate spring 13, the two-axis lug 18 and the steering two-axis 20.

[0037] The upper end of the two-axle hanger 18 is hinged to the front spring rear bracket 17, and the lower end of the two-axle hanger 18 is hinged to the two-axle leaf spring 13. One end of the two-axle leaf spring 13 is hinged to the two-axle hanger 18, and the other end of the two-axle leaf spring 13 is hinged to the triangular balance arm 25 through the two-axle balance arm pin 24. The upper end of the two-axle leaf spring 13 is provided with a two-axle leaf spring pressure plate 23, and the lower end of the two-axle leaf spring 13 is provided with a steering two-axle 20. The two-axle leaf spring pressure plate 23 is connected to the steering two-axle 20 through a two-axle U-bolt 21. The steering two-axle 20 is provided with a two-axle shock absorber lower bracket 19, and the frame 1 is provided with a two-axle shock absorber upper bracket 15. The two-axle shock absorber 16 is connected between the two-axle shock absorber lower bracket 19 and the two-axle shock absorber upper bracket 15.

[0038] The frame 1 is equipped with a two-axle limiting bracket 14, and a two-axle limiting block 22 is provided on the upper end of the two-axle leaf spring pressure plate 23. The two-axle limiting bracket 14, the two-axle limiting block 22 and the steering two-axle 20 are coaxially arranged.

[0039] Metal bushings are provided at the hinges of the two-axis lug 18 with the front spring and rear bracket 17, the two-axis lug 18 with the two-axis leaf spring 13, and the two-axis leaf spring 13 with the triangular balance arm 25.

[0040] The two-axis leaf spring 13 and the one-axis leaf spring 3 have an asymmetrical structure. The front spring front bracket 2, the leaf spring middle bracket 11 and the front spring rear bracket 17 form a three-point support structure.

[0041] The axle load ratio N1 / N2 between steering axle 31 and steering axle 20 is approximately 1.

[0042] Example 2

[0043] like Figure 4 As shown, when the vehicle accelerates, the triangular balance arm 25 in the balance mechanism 503 rotates around the intermediate support 11 of the leaf spring, driving the first shaft hanger 28 to move upward, so that the first shaft hanger 28 and the first limit 10 of the balance arm are at A. ＇ Point contact, A ＇ The front spring front bracket 2, the leaf spring intermediate bracket 11, and the front spring rear bracket 17 form a four-point load-bearing structure relative to the frame 1, which together bear the vertical load of the vehicle and reduce the force on the leaf spring intermediate bracket 11 during acceleration.

[0044] Example 3

[0045] like Figure 5 As shown, when the vehicle is forced to move, the triangular balance arm 25 in the balance mechanism 503 rotates around the intermediate support 11 of the leaf spring, which in turn drives the two-axle leaf spring 13 to move upward, so that the coil of the two-axle leaf spring 13 and the second limit 12 of the balance arm are at B. ＇ Point contact, B ＇ The front spring front bracket 2, the leaf spring intermediate bracket 11, and the front spring rear bracket 17 form a four-point load-bearing structure relative to the frame 1, which together bear the vertical load of the vehicle and reduce the force on the leaf spring intermediate bracket 11 during braking.

Claims

1. A three-point supported double-steering commercial vehicle front equalizing suspension system, characterized in that, The front axle suspension (501) and the front two axle suspension (502) are arranged on the frame (1), and the balance mechanism (503) is arranged between the front axle suspension (501) and the front two axle suspension (502), and the front axle suspension (501), the balance mechanism (503) and the front two axle suspension (502) form a three-point support structure; The balance mechanism (503) comprises a balance arm shock absorber (9), a triangular balance arm (25), a balance arm first limit (10), a plate spring intermediate support (11) and a balance arm second limit (12), the upper end of the plate spring intermediate support (11) is connected with the frame (1), the lower end of the plate spring intermediate support (11) is hinged with the triangular balance arm (25) through a balance arm intermediate pin shaft (26), and the plate spring intermediate support (11) is provided with the balance arm first limit (10) and the balance arm second limit (12) on both sides; the front end of the triangular balance arm (25) is hinged with the balance arm shock absorber (9) and the front axle suspension (501), and the rear end of the triangular balance arm (25) is hinged with the front two axle suspension (502); the balance arm shock absorber (9) is connected with the frame (1) through a shock absorber support (8).

2. The three-point supported double steering commercial vehicle front equalizing suspension system of claim 1, wherein, The triangular balance arm (25) is provided with hinged holes A (251), B (252) and C (253) for mounting the balance arm intermediate pin shaft (26), the one axle balance arm pin shaft (27) and the two axle balance arm pin shaft (24).

3. The three-point supported double steering commercial vehicle front equalizing suspension system of claim 2, wherein, The front axle suspension (501) comprises a front spring front support (2), a one axle plate spring (3), a one axle lug (28) and a steering one axle (31); one end of the one axle plate spring (3) is hinged with the front spring front support (2), the other end of the one axle plate spring (3) is hinged with the one axle lug (28), one end of the one axle lug (28) is hinged with the one axle plate spring (3), and the other end of the one axle lug (28) is hinged with the triangular balance arm (25) and the balance arm shock absorber (9) through the one axle balance arm pin shaft (27); the upper end of the one axle plate spring (3) is provided with a one axle plate spring pressing plate (32), and the lower end of the one axle plate spring (3) is provided with the steering one axle (31); the one axle plate spring pressing plate (32) is connected with the steering one axle (31) through a one axle U-shaped bolt (30), the steering one axle (31) is provided with a one axle shock absorber lower support (29), the frame (1) is provided with a one axle shock absorber upper support (6), and the one axle shock absorber lower support (29) and the one axle shock absorber upper support (6) are connected with the one axle shock absorber (7).

4. The three-point supported double steering commercial vehicle front equalizing suspension system of claim 3, wherein, The frame (1) is provided with a one axle limit support (4), and the upper end of the one axle plate spring pressing plate (32) is provided with a one axle limit block (5); the one axle limit support (4), the one axle limit block (5) and the steering one axle (31) are coaxially arranged.

5. The three-point supported double steering commercial vehicle front equalizing suspension system of claim 4, wherein, Metal bushings are arranged at the hinged positions of the front spring front support (2), the one axle plate spring (3), the one axle lug (28), the triangular balance arm (25) and the balance arm shock absorber (9).

6. The three-point supported double steering commercial vehicle front equalizing suspension system of claim 3, wherein, The front two-axle suspension (502) comprises a front spring rear support (17), a two-axle leaf spring (13), a two-axle lug (18) and a steering two-axle (20). The upper end of the two-axle lug (18) is hinged to the front spring rear support (17), the lower end of the two-axle lug (18) is hinged to the two-axle leaf spring (13), one end of the two-axle leaf spring (13) is hinged to the two-axle lug (18), the other end of the two-axle leaf spring (13) is hinged to the triangular balance arm (25) through a two-axle balance arm pin (24), the upper end of the two-axle leaf spring (13) is provided with a two-axle leaf spring pressing plate (23), the lower end of the two-axle leaf spring (13) is provided with a steering two-axle (20), the two-axle leaf spring pressing plate (23) is connected to the steering two-axle (20) through a two-axle U-shaped bolt (21), the steering two-axle (20) is provided with a two-axle shock absorber lower support (19), the vehicle frame (1) is provided with a two-axle shock absorber upper support (15), and the two-axle shock absorber lower support (19) and the two-axle shock absorber upper support (15) are connected to the two-axle shock absorber (16).

7. The tripped front double steering commercial vehicle equaliser suspension system as claimed in claim 6, wherein, The vehicle frame (1) is provided with a two-axle limiting support (14), the upper end of the two-axle leaf spring pressing plate (23) is provided with a two-axle limiting block (22), and the two-axle limiting support (14), the two-axle limiting block (22) and the steering two-axle (20) are coaxially arranged.

8. The tripped front double steering commercial vehicle equaliser suspension system as claimed in claim 7, wherein, Metal bushings are arranged at the hinged parts of the two-axle lug (18) and the front spring rear support (17), the two-axle lug (18) and the two-axle leaf spring (13), and the two-axle leaf spring (13) and the triangular balance arm (25).

9. The three-point supported double steering commercial vehicle front equalizing suspension system of claim 6, wherein, The two-axle leaf spring (13) and the one-axle leaf spring (3) are of an asymmetric structure, and the front spring front support (2), the leaf spring middle support (11) and the front spring rear support (17) form a three-point support structure.

10. The three-point supported double steering commercial vehicle front equalizing suspension system of claim 6, wherein, The shaft load ratio N1 / N2 between the steering one-axle (31) and the steering two-axle (20) is approximately 1.

Images