CN212555725U - Integrated variable-rigidity pneumatic damping semitrailer air suspension - Google Patents
Integrated variable-rigidity pneumatic damping semitrailer air suspension Download PDFInfo
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- CN212555725U CN212555725U CN202021292950.3U CN202021292950U CN212555725U CN 212555725 U CN212555725 U CN 212555725U CN 202021292950 U CN202021292950 U CN 202021292950U CN 212555725 U CN212555725 U CN 212555725U
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Abstract
The utility model provides an integrated variable rigidity pneumatic damping semitrailer air suspension, which is installed on the suspension of a semitrailer, two groups of brackets are respectively and fixedly connected with two groups of guide arms, the two groups of guide arms are fixedly connected with an axle assembly, the lower ends of two groups of air springs are respectively installed on the two groups of guide arms, a height valve component is fixedly connected with the axle assembly, and two groups of limiting mechanisms are fixedly connected with the axle assembly; the air spring comprises a rigidity adjusting valve, a gas damping valve, a piston and an air bag, wherein the rigidity adjusting valve and the gas damping valve are arranged on the piston; the guide arm is of a fully-closed hollow structure, and the inner space of the guide arm is communicated with the piston to form an additional air chamber of the air spring. The utility model provides a pair of integrated pneumatic damping semitrailer air suspension of becoming rigidity, rigidity is variable, damping is along with the vehicle condition continuously adjustable, and rigidity and damping integration realize in an air spring, have cancelled the shock absorber, more effectual ride comfort, the operating stability that improves the car and go.
Description
Technical Field
The utility model belongs to the automotive suspension field, concretely relates to integrated pneumatic damping semitrailer air suspension of becoming rigidity.
Background
With the development of the modern automobile industry, the automobile smoothness is more and more emphasized, and the improvement of the automobile smoothness reflects the improvement of the automobile technology. In addition, the comfort requirements of people on automobiles are improved, and the automobile suspension technology is also continuously developed. In the process, air suspensions are increasingly used in vehicles. In the prior art, a common air suspension of a semitrailer is a mechanism for connecting a vehicle body system and a wheel system. The main components of the air suspension include an elastic element, a shock absorber, a guide mechanism and a lateral stabilizer. The main function of the air suspension is to transmit all the forces and moments acting on the wheels from the road surface to the vehicle body through the suspension system, and to damp the vibrations caused to the vehicle body by means of the elastic elements and the shock absorbers in the air suspension. However, there are the following problems: the limit mechanism in the shock absorber component is utilized by the air suspension to limit the limit position of the air spring in the compression stroke, so that the structure of the air suspension system becomes complex, the load of the shock absorber component is increased, and the whole suspension system is heavy and high in cost. Furthermore, conventional suspension systems are typically passive systems, damping is achieved by the shock absorber, stiffness is achieved by the air spring and stiffness is not adjustable.
Therefore, how to design an integrated variable-rigidity pneumatic damping semitrailer air suspension with light weight and adjustable rigidity for improving the running smoothness of an automobile is the utility model aims to solve the technical problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem in the background art, a pneumatic damping semitrailer air suspension of integrated variable rigidity is provided. The utility model provides a pair of integrated pneumatic damping semitrailer air suspension of becoming rigidity, rigidity is variable, damping is along with the vehicle condition continuously adjustable, and rigidity and damping integration realize in an air spring, have cancelled the shock absorber, more effectual ride comfort, the operating stability that improves the car and go.
The above technical purpose of the present invention is achieved by the following technical solutions:
an integrated variable-stiffness pneumatic damping semitrailer air suspension is installed on a semitrailer and comprises two groups of brackets, two groups of guide arms, two groups of air springs, a height valve assembly, two groups of limiting mechanisms and an axle assembly, wherein the two groups of brackets are respectively and fixedly connected with the two groups of guide arms;
the air spring comprises a rigidity adjusting valve, a gas damping valve, a piston and an air bag, wherein the rigidity adjusting valve and the gas damping valve are arranged on the piston, and the piston is connected with the bottom of the air bag;
the guide arm is of a fully-closed hollow structure, the inner space of the guide arm is communicated with the piston to form an additional air chamber of the air spring, and the guide arm is connected with the piston through a bolt after being sealed.
According to the integrated variable-rigidity pneumatic damping semitrailer air suspension, the rubber bushing is arranged at the end part of the guide arm and connected with the support through the bolt.
According to the integrated variable-rigidity pneumatic damping semitrailer air suspension, the O-shaped sealing ring is arranged between the rigidity adjusting valve and the piston.
According to the integrated variable-rigidity pneumatic damping semitrailer air suspension, the limiting mechanism is of a nylon belt, metal chain or steel wire belt structure, the upper end of the limiting mechanism is connected with the frame, and the lower end of the limiting mechanism is respectively connected with the axle assembly and the guide arm.
The air suspension of the integrated variable-rigidity pneumatic damping semitrailer is characterized in that the air bag is made of an elastic material.
Compared with the prior art, the utility model has the advantages of it is following and beneficial effect:
1. suspension among the prior art is passive form system, and the damping is realized by the shock absorber, and rigidity is realized and rigidity is unadjustable by air spring, compares in prior art, the utility model discloses a scheme, rigidity is variable, damping is adjustable along with the vehicle conditions in succession, and rigidity and damping integration realize in an air spring, have cancelled the shock absorber, and the structure is more integrated brief, can adjust the ride comfort that automobile body height, suspension rigidity and damping improve the vehicle under the condition on different road surfaces.
2. The utility model provides a pair of integrated pneumatic damping semitrailer air suspension that becomes rigidity, the guiding arm is totally closed hollow structure, the inner space of guiding arm communicates with each other with the piston and forms air spring's additional air chamber, and the guiding arm both can undertake the air suspension guide effect, can act as the additional air chamber of gasbag again. Compared with the traditional plate spring type guide arm structure, the plate spring type guide arm has the advantages of light weight and concise and ingenious structural design.
3. The utility model provides a pair of integrated pneumatic damping semitrailer air suspension that becomes rigidity, with traditional leaf spring suspension comparison, can carry out filling, the gassing of air spring through the altitude valve subassembly, let the vehicle hang and keep at the height of settlement, and then realize the control to automobile body height, improve the trafficability characteristic of vehicle.
4. According to the traditional steel plate spring air suspension, when an axle is adjusted downwards, the lower limit is carried out only by a shock absorber, and an air spring and a shock absorber assembly cannot be effectively protected. And the utility model provides a pair of integrated pneumatic damping semitrailer air suspension of becoming rigidity has solitary stop gear, stop gear adopts nylon tape, metal chain or steel wire belt structure, and its upper end and lower tip are connected with axle assembly and guide arm respectively, can carry out effectual spacing.
5. The utility model provides a pair of integrated pneumatic damping semitrailer air suspension that becomes rigidity has reduced tire dynamic load, makes the vehicle obtain better ride comfort, the security of traveling and controls stability.
6. The utility model provides a pair of integrated pneumatic damping semitrailer air suspension of becoming rigidity has reduced whole car purchasing cost, uses the maintenance cost, the at utmost has protected the road surface of traveling.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art, and it is obvious that the following description is only one embodiment of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of an integrated variable-stiffness pneumatic damping semitrailer air suspension of the utility model;
FIG. 2 is a partial structural diagram of an integrated variable stiffness pneumatic damping semitrailer air suspension of the present invention;
fig. 3 is a schematic view of the cross-sectional structure of the air spring of the present invention.
The device comprises a support 1, a guide arm 2, an air spring 3, a height valve assembly 4, a limiting mechanism 5, an axle assembly 6, a rubber bushing 21, a rigidity adjusting valve 31, an O-shaped ring 32, an air damping valve 33, a piston 34 and an air bag 35.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained without creative work by the ordinary skilled person in the art all belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
Referring to fig. 1-3, an integrated variable stiffness pneumatic damping semitrailer air suspension is installed on a suspension of a semitrailer and comprises two groups of brackets 1, two groups of guide arms 2, two groups of air springs 3, a height valve component 4, two groups of limiting mechanisms 5 and an axle assembly 6, wherein the two groups of brackets 1 are respectively and fixedly connected with the two groups of guide arms 2, the two groups of guide arms 2 are fixedly connected with the axle assembly 6, the lower ends of the two groups of air springs 3 are respectively installed on the two groups of guide arms 2, one end of the height valve component 4 is connected with a frame, the other end of the height valve component 4 is fixedly connected with the axle assembly 6, and the two groups of limiting mechanisms 5 are fixedly connected with the axle assembly 6;
the air spring 3 comprises a rigidity adjusting valve 31, a gas damping valve 33, a piston 34 and an air bag 35, wherein the rigidity adjusting valve 31 and the gas damping valve 33 are arranged on the piston 34, and the piston 34 is connected with the bottom of the air bag 35;
the guide arm 2 is of a fully-closed hollow structure, the inner space of the guide arm 2 is communicated with the piston 34 to form an additional air chamber of the air spring 3, and the guide arm 2 is connected with the piston 34 through a bolt after being sealed.
The utility model discloses the principle as follows:
in the embodiment, when the integrated variable-rigidity pneumatic damping semitrailer air suspension is used, after the rigidity regulating valve 31 is electrified, the piston 34 is disconnected with the air bag 35, the inner space of the air bag 35 is only communicated with the outside, the volume of the air spring 3 is reduced, and the rigidity of the air spring 3 is increased; after the rigidity regulating valve 31 is powered off, the piston 34 is connected with the air bag 35, the inner space of the air bag 35 is communicated with the piston 34 and the inner part of the guide arm 2, the volume of the air spring 3 is increased, and the rigidity of the air spring 3 is reduced; the rigidity adjusting valve 31 is switched on and off to finish different rigidity values of the air spring 3, and the rigidity of the air suspension of the semitrailer of the embodiment is changed along with the rigidity of the semitrailer.
The gas damper valve 33 is a variable orifice designed for the air spring 3, and the opening area of the orifice changes with the pressure difference between both sides. The vertical vibration speed of the vehicle body is increased, and when the pressure difference reaches a certain value, the gas damping valve 33 starts to act, so that the air spring 3 generates moderate damping resistance in a wider vibration speed range. The gas damper valve 33 has an upper space inside the airbag 35 and a lower space inside the piston 34. When the pressure in the internal space of the airbag 35 is higher than the pressure in the internal space of the piston 34 during the vibration of the vehicle body, the orifice area is increased, and gas flows into the internal space of the piston 34 from the internal space of the airbag 35; in contrast, when the pressure in the internal space of the piston 34 is higher than the pressure in the internal space of the airbag 35, the gas flows from the internal space of the piston 34 into the internal space of the airbag 35. Under different working conditions, the vehicle can finish the correspondence of different damping values of the air spring 3, and the damping of the air suspension of the semitrailer of the embodiment is changed along with the correspondence.
Compared with the prior art, the technical scheme of the embodiment has the advantages that the rigidity is variable, the damping is continuously adjustable along with vehicle conditions, the rigidity and the damping are integrated in one air spring 3, a shock absorber is omitted, the structure is more integrated and simpler, and the ride comfort of a vehicle can be improved by adjusting the height of the vehicle body, the rigidity of a suspension and the damping under the conditions of different road surfaces.
Preferably, the end of the guide arm 2 is provided with a rubber bushing 21, and the rubber bushing 21 is connected with the bracket 1 through a bolt.
Preferably, an O-ring 32 is disposed between the stiffness adjusting valve 31 and the piston 34.
In the present embodiment, the rigidity adjusting valve 31 and the gas damping valve 33 are built-in, and it is understood that the rigidity adjusting valve 31 and the gas damping valve 33 are disposed inside the piston 34. The rigidity adjusting valve 31 and the gas damping valve 33 may be external, and it is understood that some of the structures of the rigidity adjusting valve 31 and the gas damping valve 33 are disposed outside the piston 34.
Preferably, the limiting mechanism 5 adopts a nylon belt, a metal chain or a steel wire belt structure, the upper end part of the limiting mechanism 5 is connected with the frame, and the lower end part of the limiting mechanism 5 is respectively connected with the axle assembly 6 and the guide arm 2.
Preferably, the bladder 35 is made of an elastic material.
The utility model provides a pair of integrated pneumatic damping semitrailer air suspension of becoming rigidity alleviates the weight and the volume that can whole air suspension, effectual ride comfort, the operating stability that improves the car and go.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. An integrated variable-stiffness pneumatic damping semitrailer air suspension is installed on a suspension of a semitrailer and is characterized by comprising two groups of brackets (1), two groups of guide arms (2), two groups of air springs (3), a height valve assembly (4), two groups of limiting mechanisms (5) and an axle assembly (6), wherein the two groups of brackets (1) are fixedly connected with the two groups of guide arms (2) respectively, the two groups of guide arms (2) are fixedly connected with the axle assembly (6), the lower ends of the two groups of air springs (3) are installed on the two groups of guide arms (2) respectively, one end of the height valve assembly (4) is connected with a frame, the other end of the height valve assembly is fixedly connected with the axle assembly (6), and the two groups of limiting mechanisms (5) are fixedly connected with the axle assembly (6);
the air spring (3) comprises a rigidity adjusting valve (31), a gas damping valve (33), a piston (34) and an air bag (35), the rigidity adjusting valve (31) and the gas damping valve (33) are arranged on the piston (34), and the piston (34) is connected with the bottom of the air bag (35);
the guide arm (2) is of a fully-closed hollow structure, the inner space of the guide arm (2) is communicated with the piston (34) to form an additional air chamber of the air spring (3), and the guide arm (2) is connected with the piston (34) through a bolt after being sealed.
2. An integrated variable-stiffness pneumatic damping semitrailer air suspension as claimed in claim 1, characterized in that a rubber bushing (21) is arranged at the end of the guide arm (2), and the rubber bushing (21) is connected with the bracket (1) through a bolt.
3. The integrated variable-stiffness pneumatic damping semitrailer air suspension according to claim 2, characterized in that an O-shaped sealing ring (32) is arranged between the stiffness adjusting valve (31) and the piston (34).
4. The integrated variable-stiffness pneumatic damping semitrailer air suspension according to any one of claims 1 to 3, characterized in that the limiting mechanism (5) is of a nylon belt, metal chain or steel wire belt structure, the upper end of the limiting mechanism (5) is connected with a frame, and the lower end of the limiting mechanism is respectively connected with the axle assembly (6) and the guide arm (2).
5. An integrated variable stiffness pneumatic damping semitrailer air suspension according to any one of claims 1 to 3, characterised in that the air bag (35) is made of an elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021292950.3U CN212555725U (en) | 2020-07-03 | 2020-07-03 | Integrated variable-rigidity pneumatic damping semitrailer air suspension |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021292950.3U CN212555725U (en) | 2020-07-03 | 2020-07-03 | Integrated variable-rigidity pneumatic damping semitrailer air suspension |
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| CN212555725U true CN212555725U (en) | 2021-02-19 |
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| CN202021292950.3U Active CN212555725U (en) | 2020-07-03 | 2020-07-03 | Integrated variable-rigidity pneumatic damping semitrailer air suspension |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217879A (en) * | 2022-07-29 | 2022-10-21 | 重庆长安汽车股份有限公司 | Rear swing arm structure for expanding volume of air spring and assembly method |
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2020
- 2020-07-03 CN CN202021292950.3U patent/CN212555725U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217879A (en) * | 2022-07-29 | 2022-10-21 | 重庆长安汽车股份有限公司 | Rear swing arm structure for expanding volume of air spring and assembly method |
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