阅读说明：本技术 一种空气弹簧及轨道车辆 (Air spring and railway vehicle ) 是由 田清帅 张波 刘万强 宋红光 于 2019-09-23 设计创作，主要内容包括：本发明公开了一种空气弹簧,所述空气弹簧包括上盖；第一应急弹簧,所述第一应急弹簧位于所述上盖的下方；第二应急弹簧,所述第二应急弹簧支撑于所述上盖板与所述第一应急弹簧之间,所述第二应急弹簧具有第一受力端及第二受力端,所述第一受力端与所述上盖相接,所述第二受力端与所述第一应急弹簧相接。所述第二应急弹簧包括碟簧组件,所述碟簧组件处于压缩状态；其中,从所述上盖输出的力,经所述第一受力端传递至所述碟簧组件,从所述第一应急弹簧输出的力,经所述第二受力端传递至所述碟簧组件。解决了现有技术中无法适应于安装空间有限且大载荷承载场景需求的技术问题。(the invention discloses an air spring, which comprises an upper cover; a first emergency spring located below the upper cover; the emergent spring of second, the emergent spring of second support in the upper cover plate with between the first emergent spring, the emergent spring of second has first stress end and second stress end, first stress end with the upper cover meets, the second stress end with first emergent spring meets. The second emergency spring comprises a disc spring assembly, and the disc spring assembly is in a compressed state; the force output from the upper cover is transmitted to the disc spring assembly through the first force-bearing end, and the force output from the first emergency spring is transmitted to the disc spring assembly through the second force-bearing end. The technical problem that the requirements of limited installation space and large-load bearing scenes cannot be met in the prior art is solved.)

1. An air spring, comprising:

An upper cover;

A first emergency spring located below the upper cover;

The emergent spring of second, the emergent spring of second support in the upper cover plate with between the first emergent spring, the emergent spring of second has first atress end and second atress end, first atress end with the upper cover meets, second atress end with first emergent spring meets, the emergent spring of second includes:

A disc spring assembly in a compressed state; the force output from the upper cover is transmitted to the disc spring assembly through the first force-bearing end, and the force output from the first emergency spring is transmitted to the disc spring assembly through the second force-bearing end.

2. The air spring of claim 1, wherein said upper cover is provided with a recess, and said first force-bearing end of said second emergency spring is secured within said recess.

3. The air spring of claim 2, wherein the second emergency spring further comprises a first guide cylinder and a second guide cylinder, the first guide cylinder is connected with the upper end surface of the groove, the second guide cylinder is sleeved with the first guide cylinder, and the disc spring assembly is sleeved in the first guide cylinder and the second guide cylinder.

4. The air spring of claim 3, wherein the upper cover is provided with a fixing block, and the fixing block is close to the lower end part of the groove of the upper cover; and a flange is arranged at the upper end part of the second guide cylinder, and a gap is reserved between the flange and the fixed block.

5. The air spring as claimed in claim 4, wherein the upper end surface of the groove of the upper cover is provided with a clamping interface, and the disc spring assembly is fixedly connected with the upper cover through the clamping interface.

6. Air spring according to any one of claims 3 to 5, characterized in that a friction block is fixedly mounted on the lower end face of the second guide cylinder.

7. The air spring of claim 6, wherein the first emergency spring comprises a rubber stack and a mandrel, the rubber stack is symmetrically distributed on two sides of the mandrel, and the rubber stack, the mandrel and the base are fixedly connected together through vulcanization; the supporting seat is installed at the upper end of the mandrel, a fixing piece is installed at the central shaft of the mandrel, and the mandrel is fixedly connected with the supporting seat through the fixing piece.

8. the air spring of claim 1, wherein the second emergency spring is located on an upper end surface of the first emergency spring, the second emergency spring further comprises a first guide cylinder and a second guide cylinder, the first guide cylinder is located on the upper end surface of the first emergency spring, the second guide cylinder is sleeved with the first guide cylinder, and the disc spring assembly is sleeved in the first guide cylinder and the second guide cylinder.

9. the air spring of claim 8, wherein a support base is mounted on the upper end of the first emergency spring, a fixed block is mounted on the support base, and a gap is formed between the fixed block and the second guide cylinder.

10. Air spring according to claim 8 or 9, characterized in that a friction block is fixedly mounted on the upper end face of the second guide cylinder.

11. A rail vehicle comprising a body, a bogie; the bogie comprises an air spring and is characterized in that: the air spring is according to any one of claims 1-10.

Technical Field

The invention belongs to the technical field of vibration reduction elements of a suspension system of a railway vehicle, and particularly relates to an air spring and a railway vehicle.

Background

The air spring is widely installed between the vehicle body and the bogie, provides vertical support for the vehicle body, and has certain transverse and torsional deformation capabilities. Under the normal working state, the air spring is filled with high-pressure gas, so that the flexible vertical support can be provided for the vehicle body. However, once the air spring is deflated (such as the airbag 2 is broken or the air supply system fails), only the emergency spring acts independently, and at the moment, if the vertical stiffness of the emergency spring is too high, the wheel load shedding rate and the derailment coefficient are increased, so that adverse effects are brought to the safe operation of the train.

As shown in fig. 1, it is a pre-stressed air spring assembly, which divides the emergency spring into two stages, i.e. a first emergency spring 1 ' and a second emergency spring 2 ', wherein the second emergency spring 2 ' is often composed of a single-layer or multi-layer flat rubber pile, and bears a certain pre-stress, and once the air bag 2 is deflated, it will be connected in series with the first emergency spring to play the role of reducing the vertical stiffness.

however, the maximum load that the second emergency spring of the rubber pile can bear is related to the transverse cross-sectional area, and if the second emergency spring of the rubber pile is required to bear a larger vertical load, the second emergency spring of the rubber pile has a larger cross-sectional area, and the installation space of the second emergency spring is limited. Therefore, in the case that the installation space of the second-stage emergency spring is limited, the technology can be crushed when being applied to bear a large load, that is, the technology cannot adapt to the requirement of a large-load bearing scene.

disclosure of Invention

The invention aims to provide an air spring, and aims to solve the technical problem that in the prior art, under the condition of adopting pre-pressing type emergency support, the adaptive scene of the air spring is improved, so that the air spring can meet the requirements of a scene with limited installation space and large load bearing capacity of a second-stage emergency spring.

in order to realize the purpose, the invention adopts the following technical scheme:

An air spring, comprising: an upper cover;

A first emergency spring located below the upper cover;

The emergent spring of second, the emergent spring of second support in the upper cover plate with between the first emergent spring, the emergent spring of second has first atress end and second atress end, first atress end with the upper cover meets, second atress end with first emergent spring meets, the emergent spring of second includes:

a disc spring assembly in a compressed state; the force output from the upper cover is transmitted to the disc spring assembly through the first force-bearing end, and the force output from the first emergency spring is transmitted to the disc spring assembly through the second force-bearing end.

Preferably, the upper cover is provided with a groove, and the first stressed end of the second emergency spring is fixed in the groove.

Preferably, the second emergency spring further comprises a first guide cylinder and a second guide cylinder, the first guide cylinder is connected with the upper end face of the groove, the second guide cylinder is sleeved with the first guide cylinder, and the disc spring assembly is sleeved in the first guide cylinder and the second guide cylinder.

preferably, the upper cover is provided with a fixed block, and the fixed block is close to the lower end part of the groove of the upper cover; and a flange is arranged at the upper end part of the second guide cylinder, and a gap is reserved between the flange and the fixed block.

Preferably, a clamping interface is arranged on the upper end face of the groove of the upper cover, and the disc spring assembly is fixedly connected with the upper cover through the clamping interface.

Preferably, a friction block is fixedly mounted on the lower end face of the second guide cylinder.

Preferably, the first emergency spring comprises a rubber stack and a mandrel, the rubber stack is symmetrically distributed on two sides of the mandrel, and the rubber stack, the mandrel and the base are fixedly connected together through vulcanization; the supporting seat is installed at the upper end of the mandrel, a fixing piece is installed at the central shaft of the mandrel, and the mandrel is fixedly connected with the supporting seat through the fixing piece.

Preferably, the second emergency spring is located on the upper end face of the first emergency spring, the second emergency spring further comprises a first guide cylinder and a second guide cylinder, the first guide cylinder is located on the upper end face of the first emergency spring, the second guide cylinder is sleeved with the first guide cylinder, and the disc spring assembly is sleeved in the first guide cylinder and the second guide cylinder.

Preferably, the supporting seat is installed to first emergency spring upper end, install the fixed block on the supporting seat, the fixed block with there is the space between the second guide cylinder.

preferably, a friction block is fixedly mounted on the upper end surface of the second guide cylinder.

A rail vehicle comprising a body, a bogie; the bogie comprises an air spring, and the air spring is the air spring in any one of the above.

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

1. The invention designs an air spring which comprises a first emergency spring and a second emergency spring, wherein the second emergency spring is positioned between an upper cover and the first emergency spring; and the first emergency spring selects the disc spring component, so when the air spring is in an airless state, the disc spring component is compressed under pressure, and plays a role in reducing vertical rigidity.

2. According to the invention, the upper cover is provided with the groove structure, the second emergency spring is positioned in the groove, and the disc spring assembly bears a certain pre-pressure in an initial installation state.

3. in the invention, the second emergency spring also comprises a first guide cylinder and a second guide cylinder which both play a role in fixing and guiding the disc spring assembly, so that the disc spring assembly can be more compact and stable, and the efficiency of the second emergency spring in reducing the vertical rigidity is further improved.

4. According to the invention, the friction block is fixedly arranged on the second guide cylinder, and the friction block is contacted with the supporting seat or the upper cover and generates sliding friction to meet the requirement of the transverse displacement of the vehicle body, so that the running comfort of the vehicle is ensured.

drawings

FIG. 1 is a schematic overall structure of a prior art air spring;

FIG. 2 is a schematic view showing the overall structure of an air spring in an inflated state according to embodiment 1 of the present invention;

FIG. 3 is a schematic view of the overall structure of an air spring in an airless state according to embodiment 1 of the present invention;

Fig. 4 is a schematic structural view of a second emergency spring according to embodiment 1 of the present invention;

Fig. 5 is a partial structural schematic view of an upper cover in embodiment 1 of the present invention;

FIG. 6 is a schematic view showing the overall structure of an air spring in an inflated state according to embodiment 2 of the present invention;

FIG. 7 is a schematic view of the overall structure of an air spring in an airless state according to embodiment 2 of the present invention;

Fig. 8 is a schematic structural view of a second emergency spring according to embodiment 2 of the present invention;

In the above figures: 1', a first emergency spring; 2', a second emergency spring; 1. an upper cover; 11. a groove; 12. a card interface; 2. an air bag; 3. a first emergency spring; 31. rubber piles; 32. a mandrel; 33. a base; 4. a second emergency spring; 41. a first guide cylinder; 42. a second guide cylinder; 43. a disc spring assembly; 44. a first flange; 45. a second flange; 5. a friction block; 6. a supporting seat; 7. a fixed block; 71. a third flange; 8. a bolt; 9. a backing plate.

Detailed Description

Technical scheme in the embodiment of this application improves air spring's adaptation scene for solving among the above-mentioned prior art how under the circumstances that adopts emergent support to make air spring can be adapted to the limited and big load of the emergent spring installation space of second grade and bear the technical problem of scene demand, general thinking is as follows:

The air spring comprises a first emergency spring and a second emergency spring, wherein the second emergency spring is positioned between an upper cover and the first emergency spring, when the air spring is in an airless state, an air bag does not work, the upper cover transmits force to the second emergency spring, and at the moment, the first emergency spring and the second emergency spring jointly act to provide vertical support for a vehicle body so as to reduce vertical rigidity; and the first emergency spring selects the disc spring component, so when the air spring is in an airless state, the disc spring component is compressed under pressure, and the effect of reducing the vertical rigidity is achieved.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.