CN218197806U

CN218197806U - Commercial car follow-up shaft composite air suspension

Info

Publication number: CN218197806U
Application number: CN202222161201.2U
Authority: CN
Inventors: 杨银辉; 张文博; 赵轩; 范学琼; 王元
Original assignee: Shaanxi Heavy Duty Automobile Co Ltd
Current assignee: Shaanxi Heavy Duty Automobile Co Ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2023-01-03
Anticipated expiration: 2032-08-17

Abstract

The utility model designs a commercial vehicle follow-up shaft composite air suspension, which comprises a guide arm, a follow-up shaft, an air spring and a V-shaped thrust rod; the guide arm, the air spring and the V-shaped thrust rod of the utility model are newly designed, so that the roll stiffness of the suspension system is improved while the vehicle bearing is met; by adding the supporting points of the follow-up shaft in front of or behind the drive axle, the requirements of large volume and loading capacity of the vehicle with three or four axles for assembling and disassembling are met, the axle load of the vehicle is redistributed, and the potential safety hazard after overload and tire burst of a single axle is avoided; the follow-up steering function ensures that the tire of the follow-up shaft does not deflect and shake when the vehicle runs in a reverse mode; when the vehicle turns, the tire of the follow-up shaft can adapt to the motion track of the tire of the similar drive axle, a certain rotation angle is adjusted in a self-adaptive mode, and the abrasion of the tire is reduced.

Description

Compound air suspension of commercial car follow-up shaft

Technical Field

The utility model relates to a vehicle suspension field especially relates to a commercial car follower shaft composite air suspension.

Background

The follow-up shaft suspension plays an auxiliary bearing role in a multi-shaft vehicle of a commercial vehicle, and the supporting points of the follow-up shaft are increased so as to meet the requirements of large volume and loading capacity of a three-shaft and four-shaft vehicle, so that the axle load of the vehicle is redistributed, and the potential safety hazard generated after the overload and tire burst of a single axle is avoided.

At present, with the implementation of new regulations, the market sales of multi-axle special vehicles such as 8 × 6, 10 × 4, 12 × 4 and the like is on the rise, and the vehicles generally adopt a leaf spring suspension of a follower axle, but the leaf spring suspension of the follower axle only meets the bearing requirement and cannot be matched with a suspension of a drive axle, so that the adhesion of the drive axle is small, and the vehicles cannot normally run, have poor climbing performance, tire burst and other quality faults.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a commercial car follow-up shaft composite air suspension has solved unable and drive axle suspension adaptation, and drive axle adhesive force is little, and the unable normal driving of vehicle, climbing performance are poor, the tire blast scheduling problem.

The utility model discloses an adopt following technical scheme to realize:

a commercial vehicle follow-up shaft composite air suspension comprises a guide arm, a follow-up shaft, an air spring, a vehicle frame and a V-shaped thrust rod;

the front ends of the two guide arms are respectively connected with the two sides of the frame, the middle parts of the two guide arms are respectively connected with the follow-up shaft through two riding bolts, and the rear ends of the two guide arms are respectively connected with the two air springs;

the two ends of the opening of the V-shaped thrust rod are respectively connected with the two sides of the frame, and the converging end of the V-shaped thrust rod is connected with the follow-up shaft.

Preferably, the guide arm is of a Z-shaped structure, is a spring and comprises a main reed and an auxiliary reed; and the auxiliary reed end rolling lug is wrapped on the main reed end rolling lug.

Preferably, the length from the center line of the end part of the guide arm to the center line of the follow-up shaft is A, the length from the center line of the air spring to the center line of the follow-up shaft is B, and A/(A + B) is more than or equal to 0.75.

Preferably, the rear end of the guide arm is respectively provided with an air spring lower support and an air spring upper support, and the upper end and the lower end of each air spring are respectively fixedly connected with the air spring lower support and the air spring upper support.

Preferably, the two ends of the follow-up shaft are respectively provided with a tire mounting rack, a locking cylinder and a transverse damper are respectively arranged between the follow-up shaft and the tire mounting racks, a transverse pull rod is arranged on one side of the follow-up shaft in parallel, and the two ends of the transverse pull rod are respectively hinged with the two tire mounting racks;

and a V-shaped thrust rod mounting bracket is arranged on the top wall of the follow-up shaft.

Preferably, guide arm supports are arranged on two sides of the frame respectively and are hinged with the guide arms.

Preferably, the V-shaped thrust rod comprises a first spherical hinge, two second spherical hinges and two rod pieces, the first spherical hinge is hinged to the V-shaped thrust rod mounting bracket, and the second spherical hinge is hinged to the guide arm bracket.

Preferably, the guide arm hinge part and the V-shaped thrust rod hinge part are provided with bushings.

Preferably, the two sides of the frame are respectively provided with an upper steel wire rope support, the two ends of the follow-up shaft are provided with two lower steel wire rope supports, and a steel wire rope is arranged between the upper steel wire rope support and the lower steel wire rope support.

Preferably, the steel wire rope lower support is respectively provided with a steel wire rope mounting hole and a guide arm positioning hole.

Compared with the prior art, the utility model discloses following profitable technological effect has:

the utility model can be matched with a drive axle suspension with any structure, can self-adapt to the motion posture of the close drive axle suspension, ensures the ground adhesion condition of the drive axle, improves the economical efficiency and dynamic property of automobile fuel, reduces the abrasion of tires so as to reduce the use cost of users, and solves the quality problem of the leaf spring suspension of the follow-up shaft;

the guide arm, the air spring and the V-shaped thrust rod of the utility model are newly designed, so that the roll stiffness of the suspension system is improved while the vehicle bearing is met; by adding the supporting points of the follow-up shaft in front of or behind the drive axle, the requirements of large volume and loading capacity of the vehicle with three or four axles for assembling and disassembling are met, the axle load of the vehicle is redistributed, and the potential safety hazard after overload and tire burst of a single axle is avoided; the follow-up steering function ensures that the tire of the follow-up shaft does not deflect and shake when the vehicle runs in a reverse mode; when the vehicle turns, the tire of the follow-up shaft can adapt to the motion track of the tire of the similar drive axle, a certain rotation angle is adjusted in a self-adaptive mode, and the abrasion of the tire is reduced.

Drawings

The utility model is further described with the following drawings:

FIG. 1 is an isometric view of the overall structure of the present invention;

FIG. 2 is a rear view of the overall structure of the present invention;

fig. 3 is a schematic structural view of the follower shaft of the present invention;

fig. 4 is a schematic structural view of the guide arm of the present invention;

fig. 5 is a schematic structural view of the V-shaped thrust rod of the present invention;

fig. 6 is a schematic view of the structure of the lower support of the steel wire rope of the present invention;

fig. 7 is a lever ratio schematic diagram of the composite air suspension according to the present invention.

Description of the reference numerals

1. A guide arm bracket; 2. a guide arm; 3. a follower shaft; 4. a wire rope; 5. an air spring lower bracket; 6. an air spring; 7. a frame; 8. a steel wire rope is arranged on the bracket; 9. an air spring upper bracket; 10. a V-shaped thrust rod; 11. a steel wire rope lower support; 12. a V-shaped thrust rod bracket; 21. a main reed; 22. an auxiliary reed; 31. a V-shaped thrust rod mounting bracket; 32. a tie rod; 33. a stopping cylinder; 34. a lateral damper; 101. a rod member; 102. carrying out spherical hinge I; 103. a second spherical hinge; 1101. a steel wire rope mounting hole; 1102. and (6) positioning holes of the guide arms.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1 to 7, a commercial vehicle driven shaft composite air suspension comprises a vehicle frame 7, a guide arm support 1, a guide arm 2, a driven shaft 3, an air spring 6, an air spring upper support 9, an air spring lower support 5, a V-shaped thrust rod 10, a V-shaped thrust rod support 12, a steel wire rope upper support 8, a steel wire rope lower support 11 and a steel wire rope 4.

In the embodiment, as shown in fig. 1 and 2, two guide arm brackets 1 are installed on both sides of the frame 7, and the front ends of two guide arms 2 are hinged with the guide arm brackets 1; the middle parts of the two guide arms 2 are assembled with the follow-up shaft 3 into a whole through saddle bolts; an air spring lower support 5 is arranged between the rear end of the guide arm 2 and the lower end of the air spring 6, the lower end of the air spring 6 is connected to the air spring lower support 5, and the upper ends of the two air springs 6 are connected with an air spring upper support 9; the guide arm 2 and the air spring 6 form an elastic assembly to form a frame structure in a shape like a Chinese character 'kou', so that the overall deformation resistance of the suspension system is improved, and the vertical load of the vehicle is borne together;

in this embodiment, a V-shaped thrust rod 10 is arranged in the middle of the frame 7, as shown in fig. 5, the V-shaped thrust rod 10 is in a V-shaped three-point hinge structure and is composed of a first ball hinge 102, two second ball hinges 103 and two rod members 101, the first ball hinge 102 of the V-shaped thrust rod 10 is connected with the V-shaped thrust rod bracket 12, the two second ball hinges 103 are connected with the follower shaft 3, and compared with an I-shaped thrust rod in a corresponding structure, the roll stiffness of the suspension is improved, so that the vehicle runs more stably;

in the embodiment, the steel wire rope 4 is arranged near the guide arm 2 in the middle of two sides of the frame 7, one end of the steel wire rope 4 is connected with the steel wire rope upper bracket 8, and the other end of the steel wire rope 4 is connected with the steel wire rope lower bracket 11, wherein the steel wire rope upper bracket 8 is arranged on the frame 7, the steel wire rope lower bracket 11 is arranged between the follower shaft 3 and the guide arm 2, and can be arranged on a fixing plate of a riding bolt and the follower shaft 3, so that the limitation of the downward jumping motion of the follower shaft 3 is limited; compared with the shock absorber limiting mode applied in the prior art, the steel wire rope 4 limiting device has the characteristics of simple structure, low cost and high reliability;

in this embodiment, as shown in fig. 3, two sides of the follower shaft 3 are provided with tire mounting brackets for mounting tires, two sides of the follower shaft 3 are provided with a locking cylinder 33 and a transverse damper 34, one side of the follower shaft 3 is provided with a tie rod 32 in parallel, and two ends of the tie rod 32 are respectively hinged with the two tire mounting brackets to satisfy the functions of vehicle reversing locking and follower steering; when a vehicle executes a reversing command, reversing signals are synchronously activated, the reversing signals are transmitted to a locking cylinder 33, a push rod on the locking cylinder 33 pushes a piston to lock left and right tires so as to limit the transverse movement trend of the left and right tires of a follow-up shaft; when the vehicle executes a turning command, under the action of lateral force caused by the centrifugal force of the vehicle, the tire of the follow-up shaft automatically deflects for a certain angle along the rotation direction of the drive axle through the transverse damper 34 and the transverse pull rod 32 on the follow-up shaft 3, so that the steering function of the follow-up shaft 3 is realized.

In the present embodiment, as shown in fig. 4, the guide arm 2 is a "Z" shaped structure, is a high performance spring, and is composed of a main spring piece 21 and an auxiliary spring piece 22; the end part of the main reed 21 is provided with a rolling lug, the end part rolling lug of the auxiliary reed 22 is wrapped on the end part rolling lug of the main reed 21, and the material of the guide arm 2 can be metal or composite material; the guide arm 2 not only provides a bearing function, but also provides a longitudinal guide function;

in the embodiment, as shown in fig. 4 and 5, bushings are arranged at the hinged part of the guide arm 2 and the hinged part of the V-shaped thrust rod 10, and the bushings are of a rubber and metal composite structure, so that the noise is low, the vibration damping performance is good, and the lubrication and maintenance are not needed;

in this embodiment, as shown in fig. 6, a wire rope mounting point 1101 and a guide arm positioning hole 1102 are integrated on the wire rope lower bracket; the device is used for installing the steel wire rope 4 and the guide arm 2;

in the embodiment, as shown in fig. 7, in the load-bearing embodiment of the driven shaft composite air suspension, the sprung mass is shared by the guide arm 2 and the air spring 6, wherein the load-bearing ratio of the air spring 6 is more than or equal to 0.75, i.e. A/(A + B) is more than or equal to 0.75, so that the comfort of the vehicle is satisfied.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a compound air suspension of commercial car follow-up shaft which characterized in that: comprises a guide arm (2), a follow-up shaft (3), an air spring (6), a frame (7) and a V-shaped thrust rod (10);

the front ends of the two guide arms (2) are respectively connected with two sides of a frame (7), the middle parts of the two guide arms (2) are respectively connected with a follow-up shaft (3) through two riding bolts, and the rear ends of the two guide arms (2) are respectively connected with two air springs (6);

the two ends of the opening of the V-shaped thrust rod (10) are respectively connected with the two sides of the frame (7), and the converging end of the V-shaped thrust rod (10) is connected with the follow-up shaft (3).

2. The composite air suspension of a follow shaft for a commercial vehicle according to claim 1, characterized in that the said pilot arm (2) is of a zigzag configuration, being a spring, comprising a main spring leaf (21) and an auxiliary spring leaf (22); the end rolling lug of the auxiliary spring plate (22) is wrapped on the end rolling lug of the main spring plate (21).

3. The compound air suspension of the follow shaft of the commercial vehicle as claimed in claim 1, characterized in that the length from the center line of the end of the guide arm (2) to the center line of the follow shaft (3) is A, the length from the center line of the air spring (6) to the center line of the follow shaft (3) is B, and A/(A + B) ≧ 0.75.

4. The compound air suspension of the follow shaft of the commercial vehicle as claimed in claim 1, characterized in that the rear end of the guide arm (2) is respectively provided with an air spring lower bracket (5) and an air spring upper bracket (9), and the upper and lower ends of the two air springs (6) are respectively fixedly connected with the air spring lower bracket (5) and the air spring upper bracket (9).

5. The commercial vehicle follow-up shaft composite air suspension as claimed in claim 1, characterized in that the two ends of the follow-up shaft (3) are respectively provided with a tire mounting bracket, a locking cylinder (33) and a transverse damper (34) are respectively arranged between the follow-up shaft (3) and the tire mounting bracket, a tie rod (32) is arranged in parallel on one side of the follow-up shaft (3), and the two ends of the tie rod (32) are respectively hinged with the two tire mounting brackets;

and a V-shaped thrust rod mounting bracket (31) is arranged on the top wall of the follow-up shaft (3).

6. The composite air suspension of a commercial vehicle follow-up shaft according to claim 1, characterized in that a guide arm bracket (1) is respectively arranged on both sides of the vehicle frame (7), and the guide arm bracket (1) is hinged with a guide arm (2).

7. Composite air suspension of a commercial vehicle follower shaft according to claim 5 or 6, characterized in that the V-shaped thrust rod (10) comprises a first ball joint (102), two second ball joints (103) and two rod members (101), the first ball joint (102) being hinged to the V-shaped thrust rod mounting bracket (31), the second ball joint (103) being hinged to the leading arm bracket (1).

8. Composite air suspension of a commercial vehicle follower shaft according to claim 7, characterized in that the articulated part of the leading arm (2) and the articulated part of the V-shaped thrust rod (10) are provided with bushings.

9. The composite air suspension for the follow shaft of the commercial vehicle according to claim 1, characterized in that the upper steel wire rope bracket (8) is arranged on each side of the vehicle frame (7), the two lower steel wire rope brackets (11) are arranged on each side of the follow shaft (3), and the steel wire rope (4) is arranged between the upper steel wire rope bracket (8) and the lower steel wire rope brackets (11).

10. The composite air suspension for a follow shaft of a commercial vehicle according to claim 9, characterized in that the lower bracket (11) is provided with a cable mounting hole (1101) and a pilot arm positioning hole (1102), respectively.