阅读说明：本技术 小曲囊式空气弹簧及轨道车辆 (Small-curve-bag type air spring and railway vehicle ) 是由 宋红光 苏鹏 阴晓铭 于 2019-09-27 设计创作，主要内容包括：本发明涉及一种小曲囊式空气弹簧及轨道车辆,所述空气弹簧包括：上盖板；扣环,设于上盖板下表面；辅助弹簧,与所述上盖板间隔设置；第一气囊,安装于所述上盖板与所述辅助弹簧之间,所述第一气囊与所述扣环的顶部连接；第二气囊,设于所述上盖板与所述第一气囊上部组成的空间内,所述第二气囊设有进气嘴。本发明能够实时调整小曲囊式空气弹簧的垂向刚度、水平刚度等性能,即可实时调整调整车辆的振动性能,车辆以不同速度和线路条件运行时,其平稳性和安全行可以得到保证。(The invention relates to a small-curve-bag type air spring and a railway vehicle, wherein the air spring comprises: an upper cover plate; the retaining ring is arranged on the lower surface of the upper cover plate; the auxiliary spring is arranged at intervals with the upper cover plate; the first air bag is arranged between the upper cover plate and the auxiliary spring and is connected with the top of the retaining ring; the second air bag is arranged in a space formed by the upper cover plate and the upper part of the first air bag, and is provided with an air inlet nozzle. The invention can adjust the vertical rigidity, the horizontal rigidity and other performances of the small curved bag type air spring in real time, namely adjust the vibration performance of the vehicle in real time, and the stability and the safety of the vehicle can be ensured when the vehicle runs at different speeds and line conditions.)

1. a small bellows air spring comprising:

An upper cover plate;

the retaining ring is arranged on the lower surface of the upper cover plate;

The auxiliary spring is arranged at intervals with the upper cover plate;

The first air bag is arranged between the upper cover plate and the auxiliary spring and is connected with the top of the retaining ring;

The second air bag is arranged in a space formed by the upper cover plate and the upper part of the first air bag;

the second air bag is provided with an air inlet nozzle.

2. The small bellow air spring as defined in claim 1 wherein said air inlet nozzle comprises an air inlet nozzle body and a shutoff valve disposed on said air inlet nozzle body.

3. the small-bellow type air spring as claimed in claim 2, further comprising an automatic inflation and deflation device, wherein said automatic inflation and deflation device comprises an air source device communicated with said air inlet nozzle, a controller, a pressure sensor connected with said controller and a solenoid valve connected with said controller, said pressure sensor is arranged in or communicated with said second air bag, said solenoid valve is arranged on said air inlet nozzle, said solenoid valve is arranged outside said shutoff valve, and said shutoff valve is connected with said controller.

4. The small bellows air spring of claim 3 wherein said air supply means includes an air supply and a compressor in communication with said air supply, said compressor being in communication with an inlet nozzle through an air line, said compressor being connected to said controller.

5. The small bellow type air spring according to claim 1 or 4, wherein said auxiliary spring comprises an auxiliary spring body, a support base spaced apart from said upper cover plate, and a mounting base spaced apart from said support base, said auxiliary spring body being mounted between said support base and said mounting base, said first air bag being mounted between said upper cover plate and said support base.

6. The small bellows type air spring according to claim 5, wherein a bayonet is provided at a top portion of the retaining ring, the sub port of the first air bag is fitted into the bayonet of the retaining ring, and the female port of the first air bag is fitted into a protruding catch provided at an outer side of the support base.

7. A rail vehicle comprising a small bellows air spring according to any one of claims 1 to 6.

Technical Field

the invention belongs to the technical field of vibration reduction of railway vehicles, relates to a vibration reduction device of a railway vehicle, and particularly relates to a small-curve-bag type air spring and a railway vehicle.

Background

the air spring is arranged between the vehicle body and the bogie, is used for transferring vertical load, transverse load, torque and the like, absorbing vertical and horizontal vibration, providing horizontal restoring force and the like, and has great influence on the stability and comfort of the vehicle.

referring to fig. 1, the conventional small-bellow air spring includes an upper cover plate 1, a retaining ring 2, an auxiliary spring 3, and an air bag 4, where the upper cover plate 1 is located below a vehicle body or a bolster to perform functions of sealing and transferring a load, the retaining ring 2 and the air bag 4 are located below the upper cover plate 1, the auxiliary spring 3 is located below the air bag 4, and a rubber 5 is disposed between the upper cover plate 1 and the air bag 4. The rubber is used for preventing the air bag from being abraded due to friction between the upper cover plate and the air bag and sealing the air bag. Under the normal inflation state of the air spring, the air bag plays a main damping role, and the vertical rigidity and the horizontal rigidity of the existing small curved bag type air spring product are determined immediately after the structure of the existing small curved bag type air spring product is fixed, so that the adjustment cannot be carried out.

At present, the running of trains with different speed grades has great dependence on the line conditions, and in order to ensure the running stability and safety of the vehicles, the performance of the air spring is changed along with the running speed and the line conditions. However, the current air spring structure cannot meet the requirement.

disclosure of Invention

aiming at the problems that the performance of the existing small-curve-bag type air spring cannot be changed and the like, the invention provides the small-curve-bag type air spring with the performance parameters capable of being adjusted in real time and the railway vehicle.

in order to achieve the above object, the present invention provides a small bellows type air spring, comprising:

an upper cover plate;

The retaining ring is arranged on the lower surface of the upper cover plate;

The auxiliary spring is arranged at intervals with the upper cover plate;

the first air bag is arranged between the upper cover plate and the auxiliary spring and is connected with the top of the retaining ring;

The second air bag is arranged in a space formed by the upper cover plate and the upper part of the first air bag, and is provided with an air inlet nozzle.

Preferably, the air inlet nozzle comprises an air inlet nozzle body and a shut-off valve arranged on the air inlet nozzle body.

Further, still including automatic gassing device that fills, automatic gassing device that fills include with the air supply unit of suction nozzle intercommunication, controller, with pressure sensor that the controller is connected and with the solenoid valve that the controller is connected, pressure sensor locates inside the second gasbag or with the second gasbag intercommunication, the solenoid valve is located on the suction nozzle, the solenoid valve is located the outside of shutoff valve, the shutoff valve with the controller is connected.

preferably, the air source device comprises an air source and a compressor communicated with the air source, the compressor is communicated with the air inlet nozzle through an air pipeline, and the compressor is connected with the controller.

Preferably, the auxiliary spring comprises an auxiliary spring body, a supporting seat arranged at an interval with the upper cover plate and an installation base arranged at an interval with the supporting seat, the auxiliary spring body is installed between the supporting seat and the installation base, and the first air bag is installed between the upper cover plate and the supporting seat.

Preferably, a bayonet is arranged at the top of the retaining ring, the sub-port of the first air bag is embedded in the bayonet of the retaining ring, and the main port of the first air bag is embedded on a protruding clamping table arranged on the outer side of the supporting seat.

In order to achieve the aim, the invention also provides a railway vehicle which comprises the small-bellow type air spring.

compared with the prior art, the invention has the advantages and positive effects that:

The invention is provided with two air bags, the first air bag plays a role in vibration reduction, the second air bag plays a role in regulation, the appearance of the first air bag can be regulated by changing the air pressure in the second air bag in real time, so that the performances of the small curved bag type air spring such as vertical rigidity, horizontal rigidity and the like can be regulated in real time, namely the vibration performance of the vehicle can be regulated in real time, and the stability and safety of the vehicle can be ensured when the vehicle runs at different speeds and line conditions. The invention provides a method for the active control technology of the vehicle, and is a great breakthrough of the improvement of the structure and the performance of the air spring product.

Drawings

FIG. 1 is a schematic structural diagram of a conventional small bellows type air spring;

FIG. 2 is a schematic structural diagram of a small-bellow air spring according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of an air intake nozzle according to an embodiment of the present invention;

FIG. 4 is a block diagram illustrating the control of the automatic inflation/deflation device according to the embodiment of the present invention;

FIG. 5 is a schematic view of the second air bag of the air spring with small bellows according to the embodiment of the present invention after the pressure inside the second air bag is changed.

In the figure, the air inlet nozzle comprises an upper cover plate 1, an upper cover plate 2, a retaining ring 3, an auxiliary spring 301, an auxiliary spring body 302, a supporting seat 303, a mounting base 4, an air bag 401, a first air bag 402, a second air bag 5, rubber 6, an air inlet nozzle 601, an air inlet nozzle body 602, a shutoff valve 701, a controller 702, a pressure sensor 703, an electromagnetic valve 704 and a compressor.

Detailed Description

the invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The structure of the existing small-bellow type air spring is fixed, the vertical rigidity and the horizontal rigidity of the existing small-bellow type air spring are determined immediately and cannot be adjusted. In order to ensure the running stability and safety of the vehicle, when the running speed and the line condition are different, the performance of the air spring is changed.

In order to meet the requirements, the invention provides a small curved bag type air spring which comprises an upper cover plate, a retaining ring, a supporting seat, an installation base, a first air bag, a second air bag and an auxiliary spring, wherein the second air bag is arranged in a space formed by the upper cover plate and the upper part of the first air bag, the first air bag plays a role in vibration reduction, and the second air bag plays a role in regulation. The volume of the second air bag is changed by changing the air pressure in the second air bag, so that the appearance of the first air bag is influenced, and the performance of the air spring is changed after the appearance of the first air bag is changed. Specifically, the larger the volume of the second airbag, the smaller the vertical stiffness and the larger the horizontal stiffness of the first airbag. When the running speed and the line condition change, the running state of the whole vehicle changes, and how to adjust the appearance of the first air bag according to the second air bag so as to adjust the performance of the air spring in real time needs to be adjusted according to specific actual conditions.

the present invention provides a small bellows type air spring, which is described in detail below with reference to specific examples.