CN2811664Y

CN2811664Y - Air bag device in air suspension

Info

Publication number: CN2811664Y
Application number: CN 200520051381
Authority: CN
Inventors: 曹立波
Original assignee: Hunan University
Current assignee: Hunan University
Priority date: 2005-07-14
Filing date: 2005-07-14
Publication date: 2006-08-30
Anticipated expiration: 2015-07-14

Abstract

The utility model discloses an air bag device of an air suspension, which is composed of an upper air bag (2) which can be independently adjusted and a lower air bag (1), wherein the upper air bag (2) and the lower air bag (1) are overlapped up and down. The air suspension has the characteristics of high adjustment precision, flexible and convenient control, good manipulating stability, ride comfort, safety, etc. by the utility model.

Description

The air-suspension bellows device

Technical field:

The utility model belongs to automotive suspension, is specifically related to the architecture advances of air bag device in a kind of air suspension.

Background technique:

Along with developing rapidly of expressway with the increase of transport volume and to the demand of high-performance passenger-cargo carriage, control stability, smoothness, the Security of automobile to be had higher requirement, air suspension also is widely used gradually.Vehicle adopts air suspension to compare with adopt conventional suspension in the past, both can prolong the working life of vehicle, can improve the travelling comfort of car load again, and it has the change stiffness characteristics, obtains lower eigentone easily, to guarantee good vehicle running smoothness; Concerning lorry, not only can reduce the dynamic load of wheel simultaneously, significantly reduce the destructiveness of vehicle road pavement, thereby reduce the maintenance expenses of express highway pavement, can also more effectively prevent the impaired of goods carried.For some special vehicles and special-purpose vehicle, as: go-anywhere vehicle and city bus, also can regulate the vehicle body height of vehicle as required.After the vehicle body height modulating valve is housed, vehicle body height is not changed with the increase and decrease of load; The life-span of pneumatic spring is more much higher than leaf spring, and stand test shows that be 3,000,000 the fatigue life of pneumatic spring, and the general steel plate spring fatigue life is 10～150,000 times.But existing air suspension mainly is made up of air bag, vibration damper and guide mechanism, and its air bag partly adopts monosaccate, still has shortcomings such as the slow and control effect imperfection of, the speed of response low such as control accuracy.

The model utility content:

Technical problem to be solved in the utility model provides a kind of air suspension that makes and adjusts the precision height, controls flexiblely, has the comfortable air-suspension bellows device of good control stability, smoothness, Security and occupant.

For solving the problems of the technologies described above, the utility model adopts following technical proposals.A kind of air-suspension bellows device is characterized in that described air bag device is made up of the upper gasbag that can regulate separately and lower gasbag, the placement that superposes up and down of described upper gasbag and lower gasbag.

As further improvement of the utility model, be provided with the link that connects two air bags between described upper gasbag and the lower gasbag, the upper and lower air bag of stack placement places among the U type fixed block up and down, and a side of U type fixed block is fixed on the upper gasbag.Described link can be the L type, and the bottom surface of L type link is fixed between the upper and lower air bag.

Described upper gasbag links to each other with a branch gas circuit that is connected with pressure transducer and solenoid valve respectively with lower gasbag, each minute gas circuit be connected in parallel on total gas circuit, total gas circuit is provided with control unit and gas holder.

The utility model compared with prior art, adopt two air bags to form the air bag device of air suspension, compare with existing monosaccate air suspension, since two air bag particular structure setting types and each air bag can be controlled separately, adjust precision and greatly improve, and the improvement of the automobile correlated performance that brings thus is also comparatively obvious.The utility model can be according to occupant and payload, pavement behavior and occupant's hobby real time altering suspension vibration parameters, thereby provides comfortable vibration environment for the occupant.Simultaneously, the coherent signal that suspension of the present utility model can collect according to coupled acceleration transducer and pressure transducer is installed, directly feed back to each air bag via control unit, can be by changing the volume of two air bags respectively, according to the cross-country or situation of running at high speed, improve or the reduction vehicle body height, so that vehicle reaches desirable smoothness, control stability, aerodynamic force, passing ability and boarding.

Description of drawings:

Fig. 1 is a structural representation plan view of the present utility model;

Fig. 2 is a structural representation right elevation of the present utility model;

Fig. 3 is the utility model partial structurtes plan view (not shown vehicle body) in car load;

Fig. 4 is that the A of Fig. 3 is to view;

Fig. 5 is the structural representation plan view of the utility model in car load (vehicle body is a bearing-type);

Fig. 6 is a stereochemical structure sketch of the present utility model.

Each label is represented among the figure:

1, lower gasbag 2, upper gasbag

3, link 4, U type fixed block

5, longitudinal beam 6, vehicle bridge

7, monocoque body 8, pressure transducer,

9, acceleration transducer 10, solenoid valve,

11, control unit 12, gas holder,

13, total gas circuit

Embodiment:

Shown in Fig. 1,2,6, air-suspension bellows device of the present utility model is made up of the upper gasbag 2 that can regulate separately and lower gasbag 1, the placement that superposes up and down of upper gasbag 2 and lower gasbag 1.Be provided with the link 3 that connects two air bags between upper gasbag 2 and the lower gasbag 1, link 3 is the L type, and the bottom surface of L type link 3 is fixed between the upper and lower air bag 2,1.The upper gasbag 2 and the lower gasbag 1 of stack placement place among the U type fixed block 4 up and down, and a side of U type fixed block 4 is fixed on the upper gasbag 2; The utility model is installed in the vehicle shown in Fig. 3,4,5, the opposite side of U type fixed block 4 can be fixed on the vehicle bridge 6, the side of L type link 3 then is fixed on the longitudinal beam 5, is that the vehicle of bearing-type can be fixed in (as shown in Figure 5) on the monocoque body 7 for vehicle body.Upper gasbag 2 links to each other with a branch gas circuit that is connected with pressure transducer 8 and solenoid valve 10 respectively with lower gasbag 1, each minute gas circuit be connected in parallel on total gas circuit 13, total gas circuit 13 is provided with control unit 11 and gas holder 12.Each air bag can be controlled separately; Acceleration transducer 9 (see figure 3)s that control unit 11 will be installed on the vehicle bridge 6 focus on acceleration, the pressure signal that pressure transducer that each air bag connects 8 collects, and control executing mechanism is the parameter that solenoid valve 10 and gas holder 12 are regulated two air bags respectively.

The utility model is used for vehicle, and the bearing structure of every suit air suspension is by up and down two upper gasbags that can regulate separately 2 and lower gasbag 1 are formed.The rigidity of suspension and the height of vehicle body can carry out real-time regulated according to occupant and payload, pavement behavior, occupant's hobby.Can be by the parameter of real time altering air bag, to change the suspension vibration parameters, for the occupant provides comfortable vibration environment.Simultaneously, vehicle body height can be according to cross-country or run at high speed and improve or reduce, to improve passing ability, aerodynamic force and the riding stability of automobile.When the air pressure of upper gasbag 2 and lower gasbag 1 increased simultaneously, the rigidity of suspension system increased; When the air pressure of upper gasbag 2 and lower gasbag 1 reduced simultaneously, the rigidity of suspension system reduced.When the volume increase of lower gasbag 1, when the volume of upper gasbag 2 reduced, vehicle body can be raised, and improved passing ability.When the volume of lower gasbag 1 reduces, when the volume of upper gasbag 2 increased, vehicle body can reduce, and reduced running resistance, improved riding stability.

Work characteristics of the present utility model is:

1, after the occupant is seated, the driver opens the automatic by-pass cock of the airsuspension system that is positioned on the instrument panel, the vehicle body load information that control unit 11 is passed back by upper and

lower air bag

2,1 pressure transducer that is connected 8, detect gas circuit pressure rapidly and accurately calculate the vehicle body load with this, utilize the pressurized gas in the gas holder 12 to adjust the amount of pressurized gas in the upper and

lower air bag

2,1 and then the pressure in the adjusting air bag subsequently, finally make vehicle body reach best Rigidity Matching via total gas circuit 13 and by the switching of solenoid valve 10.

2, after vehicle begins to travel, frequency characteristics according to wheel hop, the vehicle body acceleration information that control unit 11 is passed back by acceleration transducer 9 is judged the concrete situation on road surface, utilize the pressurized gas in the gas holder 12 to adjust the amount of pressurized gas in the upper and

lower air bag

2,1 and then the pressure in the adjusting air bag according to pavement behavior subsequently, finally make vehicle body reach best Rigidity Matching via total gas circuit 13 and by the switching of solenoid valve 10.

3, the driver can select to run at high speed or cross-country run, under the situation that does not change the Vehicular vibration characteristic, adjusts the height of vehicle by changing the tolerance that goes up lower gasbag, to satisfy the different requirements of travelling.

4, the driver can select to close automatic by-pass cock, and changes the vibration characteristic of suspension system according to oneself hobby, to satisfy the requirement of different passengers to the Vehicular vibration characteristic.

Claims

1, a kind of air-suspension bellows device is characterized in that described air bag device is made up of the upper gasbag that can regulate separately (2) and lower gasbag (1), the placement that superposes up and down of described upper gasbag (2) and lower gasbag (1).

2, air-suspension bellows device according to claim 1, it is characterized in that being provided with between described upper gasbag (2) and the lower gasbag (1) link (3) that connects two air bags, the upper and lower air bag (2,1) of stack placement places among the U type fixed block (4) up and down, and a side of U type fixed block (4) is fixed on the upper gasbag (2).

3, air-suspension bellows device according to claim 2 is characterized in that described link (3) is the L type, and the bottom surface of L type link (3) is fixed between the upper and lower air bag (2,1).

4, according to claim 1 or 2 or 3 described air-suspension bellows devices, it is characterized in that described upper gasbag (2) links to each other with a branch gas circuit that is connected with pressure transducer (8) and solenoid valve (10) respectively with lower gasbag (1), each minute, gas circuit was connected in parallel on total gas circuit (13), and total gas circuit (13) is provided with control unit (11) and gas holder (12).