CN216343637U

CN216343637U - Semi-active control type air spring for passenger vehicle

Info

Publication number: CN216343637U
Application number: CN202122742083.XU
Authority: CN
Inventors: 李季; 李俊; 梁天也; 汪伯潮; 桑敏; 张文强; 刘年所
Original assignee: Anhui Weiwei Rubber Parts Group Co ltd
Current assignee: Anhui Weiwei Rubber Parts Group Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-04-19
Anticipated expiration: 2031-11-10

Abstract

The utility model discloses a semi-active control type air spring for a passenger car, which comprises an upper connecting plate and a lower connecting plate, wherein an air chamber is fixed at the upper end of the upper connecting plate, an air inlet pipe is welded on the side wall of the air chamber, a throttling hole is formed in the middle of the upper connecting plate, an air bag is arranged between the upper connecting plate and the lower connecting plate, the upper edge of the air bag is fixed on the lower end face of the upper connecting plate through a sealing ring in an extruding mode, the air chamber is communicated with the air bag through the throttling hole, a metal framework is fixed at the upper end of the lower connecting plate, a rubber main spring is arranged between the metal frameworks, the metal framework is connected with the rubber main spring through vulcanization, the air bag is connected with the metal framework through vulcanization, an electromagnetic coil is fixed between the metal frameworks, and the air bag is made of a magnetorheological elastomer rubber material. The semi-active control type air spring for the passenger vehicle is simple in structure and low in manufacturing cost.

Description

Semi-active control type air spring for passenger vehicle

Technical Field

The utility model relates to a vibration isolation and noise reduction device for a passenger vehicle, in particular to a semi-active control type air spring for a passenger vehicle.

Background

With the continuous improvement of the living standard of people, the requirements of people on the speed, riding comfort and safety of passenger cars are continuously improved, and modern passenger cars are developing towards high speed, low vibration and low noise. Therefore, the passenger car largely adopts vibration isolation and noise reduction devices to improve the running stability and riding comfort of the car. Air springs have incomparable advantages with other vibration isolation devices: (1) the stiffness of the air spring changes with the change of the load, so that the natural vibration frequency is almost unchanged under any load. The common metal spring has a wide natural vibration frequency range and changes along with the change of load because the rigidity is unchanged; (2) the air spring has nonlinear elastic characteristics, and the characteristic curve of the air spring can be designed into an ideal shape. Such as an inverted "S" shape, which is most desirable in vehicle suspension devices, i.e., having a relatively low stiffness in the middle section of the curve, and a gradually increasing stiffness in the edge sections of the extension and compression strokes. Therefore, the vehicle can be ensured to be soft when in normal running, and the rigidity of the air spring is gradually increased when the air spring is greatly stretched and compressed in the occasions of sharp turns, uneven road surfaces and the like, so that the vibration of the vehicle body can be limited. However, the characteristic curve of the ordinary metal spring is linear, and the structure of the metal spring suspension is necessarily complicated to make the metal spring suspension have the nonlinear characteristic. (3) The stiffness of the air spring, no matter how much it is loaded, can be selected by changing the air pressure, so the stiffness can be selected to be very low as required. For example, the rigidity can be reduced by increasing the volume of the auxiliary air chamber. (4) Different load capacities can be obtained for the same air spring when the inflation pressure is changed. Therefore, one air spring can meet the requirements of various loads and has better economic benefit. In addition, the air spring can have different heights under a certain load through the action of the height control valve, and can be suitable for various structural requirements. (5) Compared with a metal spring, the air spring has longer service life. Tests show that the fatigue life of the air spring can reach more than 300 ten thousand times, and the fatigue life of the steel plate spring is generally only 50-60 ten thousand times. (6) The air spring has high vibration absorption and noise reduction capabilities, can improve the comfort of the commercial vehicle, and has a certain protection effect on the vehicle and transported goods. The air spring takes gas as a working medium, the internal friction is extremely small, and almost no noise is generated during working. (7) The air spring also has the defects of complex manufacturing process, higher cost, high sealing requirement and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a semi-active control type air spring of a passenger car, which has a simple structure and low manufacturing cost.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a passenger car semi-active control formula air spring, includes upper junction plate and lower connecting plate, the upper junction plate upper end is fixed with air chamber, the welding has the intake pipe on the lateral wall of air chamber, the upper junction plate middle part is equipped with the orifice, be equipped with the gasbag between upper junction plate and the lower connecting plate, the top edge of gasbag passes through the sealing washer extrusion and fixes the lower terminal surface at the upper junction plate, the air chamber passes through the orifice intercommunication with the gasbag, the connecting plate upper end is fixed with metal framework down, install rubber main spring between the metal framework, metal framework is connected through vulcanizing with rubber main spring, the gasbag passes through vulcanizing with metal framework and is connected, be fixed with solenoid between the metal framework, the gasbag is made by magnetic current becomes elastomer rubber material.

Preferably, the sealing ring is connected with the upper connecting plate through a bolt.

Preferably, the upper connecting plate is fixedly connected with the cab through bolts.

Preferably, the lower connecting plate is connected with the frame through a bolt.

Preferably, a limiting plate is fixed at the upper end of the metal framework.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides a semi-active control type air spring of a passenger vehicle, which has simple structure and low manufacturing cost.

Drawings

FIG. 1 is a schematic structural diagram of a semi-active control type air spring of a passenger car according to an embodiment of the present invention;

in the figure, 1, a lower connecting plate, 2, an air bag, 3, a sealing ring, 4, an electromagnetic coil, 5, an air inlet pipe, 6, an air chamber, 7, an orifice, 8, an upper connecting plate, 9, a limiting plate, 10, a skeleton, 11 and a rubber main spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, a semi-active control type air spring for a passenger vehicle includes an upper connection plate 8 and a lower connection plate 1, the upper connection plate 8 is fixedly connected to a cab through a bolt, and the lower connection plate 1 is connected to a frame through a bolt. An air chamber 6 is fixed at the upper end of the upper connecting plate 8, an air inlet pipe 5 is welded on the side wall of the air chamber 6, and a throttling hole 7 is formed in the middle of the upper connecting plate 8. An air bag 2 is arranged between the upper connecting plate 8 and the lower connecting plate 1, the upper edge of the air bag 2 is extruded and fixed on the lower end face of the upper connecting plate 8 through a sealing ring 3, and the sealing ring 3 is connected with the upper connecting plate 8 through a bolt. The air chamber 6 is communicated with the air bag 2 through an orifice 7, a metal framework 10 is fixed at the upper end of the lower connecting plate 1, and a limiting plate 9 is fixed at the upper end of the metal framework 10. Rubber main springs 11 are installed between the metal frameworks 10, the metal frameworks 10 are connected with the rubber main springs 11 through vulcanization, and the air bag 2 is connected with the metal frameworks 10 through vulcanization. An electromagnetic coil 4 is fixed between the metal frameworks 10, and the air bag 2 is made of magnetorheological elastomer rubber material.

Compressed air is pressed into an air chamber 6 through an air inlet pipe 5, an upper connecting plate 8 is connected with a cab through a bolt, a lower connecting plate 1 is connected with a frame through a bolt, the rigidity and the damping of a magnetorheological elastomer air bag 2 are controlled by using a continuous variable magnetic field generated by an electromagnetic coil 4, and then the damping and the rigidity value of a semi-active control type air spring are continuously adjusted, so that the vibration isolation performance of the traditional air spring is improved, and the riding comfort of a vehicle is improved.

The low-frequency large vibration is attenuated, and the low-frequency large vibration is generated when the passenger vehicle starts and brakes and is accelerated suddenly. The electric control system controls to improve the rigidity and the damping of the magnetorheological elastomer air bag 2 by changing the magnetic field intensity of the electromagnetic coil 4, so that the rigidity of the air spring is improved, and meanwhile, the throttling hole 7 provides larger damping, so that the low-frequency large-amplitude vibration of the cab is effectively inhibited.

High-frequency noise is suppressed, and when the passenger vehicle runs at high speed, the high-frequency noise is generated and transmitted to the cab. The electric control system controls the electromagnetic collar to change the magnetic field intensity, so that the rigidity and the damping of the magnetorheological elastomer air bag 2 are reduced, the rigidity and the damping of the air spring are further reduced, and the transmission of high-frequency noise to a cab is effectively inhibited.

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the present invention as defined in the accompanying claims.

Claims

1. The utility model provides a passenger car semi-active control formula air spring which characterized in that: including upper junction plate and lower connecting plate, the upper junction plate upper end is fixed with air chamber, the welding has the intake pipe on the lateral wall of air chamber, the upper junction plate middle part is equipped with the orifice, be equipped with the gasbag between upper junction plate and the lower connecting plate, the top edge of gasbag passes through the sealing washer extrusion and fixes the lower terminal surface at the upper junction plate, the air chamber passes through the orifice intercommunication with the gasbag, the connecting plate upper end is fixed with metal framework down, install rubber main spring between the metal framework, metal framework is connected through vulcanizing with rubber main spring, the gasbag is connected through vulcanizing with metal framework, be fixed with solenoid between the metal framework, the gasbag is made by magnetic current becomes elastomer rubber materials.

2. The semi-active control type air spring for passenger vehicles according to claim 1, wherein: the sealing ring is connected with the upper connecting plate through a bolt.

3. The semi-active control type air spring for passenger vehicles according to claim 1, wherein: the upper connecting plate is fixedly connected with the cab through bolts.

4. The semi-active control type air spring for passenger vehicles according to claim 1, wherein: the lower connecting plate is connected with the frame through bolts.

5. The semi-active control type air spring for passenger vehicles according to claim 1, wherein: and a limiting plate is fixed at the upper end of the metal framework.