阅读说明：本技术 一种轨道交通客车幅流风机后端头结构 (End structure behind rail transit passenger train radial fan ) 是由 赵京 刁雷 于 2020-05-13 设计创作，主要内容包括：本发明公开了一种轨道交通客车幅流风机后端头结构。本发明包括铝合金内圈,铝合金内圈的中部前后两侧各设有一铝合金凸台,其中一铝合金凸台旁设有安装凹槽,安装凹槽设于铝合金内圈上；所述铝合金内圈在其设置安装凹槽的一侧套设有有橡胶圈；橡胶圈包括套设于铝合金凸台上的凸台橡胶圈,设于安装凹槽中的嵌套橡胶圈和套设于铝合金内圈上的橡胶外圈。本发明具有轻量化,减振效果好,不易出现噪声以及安装方便的优点。(The invention discloses a rear end structure of a radial flow fan of a rail transit passenger car. The aluminum alloy inner ring comprises an aluminum alloy inner ring, wherein aluminum alloy bosses are respectively arranged on the front side and the rear side of the middle part of the aluminum alloy inner ring, a mounting groove is arranged beside one aluminum alloy boss, and the mounting groove is arranged on the aluminum alloy inner ring; a rubber ring is sleeved on one side of the aluminum alloy inner ring, which is provided with the mounting groove; the rubber ring comprises a boss rubber ring sleeved on the aluminum alloy boss, an embedded rubber ring arranged in the mounting groove and a rubber outer ring sleeved on the aluminum alloy inner ring. The invention has the advantages of light weight, good vibration damping effect, difficult noise occurrence and convenient installation.)

1. The utility model provides a terminal structure behind rail transit passenger train radial fan which characterized in that: the aluminum alloy inner ring comprises an aluminum alloy inner ring (1), wherein aluminum alloy bosses (2) are respectively arranged on the front side and the rear side of the middle part of the aluminum alloy inner ring (1), a mounting groove (3) is arranged beside one aluminum alloy boss (2), and the mounting groove (3) is arranged on the aluminum alloy inner ring (1); a rubber ring is sleeved on one side, provided with the mounting groove (3), of the aluminum alloy inner ring (1); the rubber ring comprises a boss rubber ring (5) sleeved on the aluminum alloy boss (2), a nested rubber ring (4) arranged in the mounting groove (3) and a rubber outer ring (6) sleeved on the aluminum alloy inner ring (1).

2. The rail transit passenger car radial flow fan rear end structure of claim 1, wherein: the rubber outer ring (6) is connected with the nesting lug (7); the outer edge of the nesting rubber ring (4) is provided with a nesting groove (9).

3. The rail transit passenger car radial flow fan rear end structure of claim 1, wherein: and a threaded hole (8) is formed in the aluminum alloy boss (2) on the side, not provided with the mounting groove (3), of the aluminum alloy inner ring (1).

4. The rail transit passenger car radial flow fan rear end structure of claim 1, wherein: and chamfers are arranged on the outer edges of the boss rubber ring (5) and the nested rubber ring (4).

5. The rail transit passenger car radial flow fan rear end structure of claim 1, wherein: the center of the aluminum alloy inner ring (1) is provided with a mounting hole (10).

6. The rail transit passenger car radial flow fan rear end structure of claim 1, wherein: the boss rubber ring (5) is arranged in the mounting groove (3).

Technical Field

The invention relates to the technical field of end head structures of radial flow fans, in particular to a rear end head structure of a radial flow fan of a rail transit passenger car.

Background

The radial flow fan is used in ventilation and air exchange of public transport means, such as subway, train, high-speed railway, bus, etc. and aims at improving the through flow circulation of air inside the transport means and making human body feel comfortable. The rear end of the radial flow fan is an important part of the radial flow fan. The radial fan is connected with the rear end through the fixed shaft, and the quality and the structural design of the rear end are important factors influencing the working efficiency, the noise, the service life and other key points of the radial fan. The rear end structure of the existing radial flow fan is an aluminum alloy end body, bosses with the same size and diameter are arranged in the front and at the back of the aluminum alloy end body, and the aluminum alloy end body is fixedly connected with other structures of the rear end through bolts.

The noise reduction and the light weight of the end head structure of the radial flow fan are important research and development methods of the radial flow fan at present. The rear end structure of the existing radial fan has the technical points of improvement and innovation breakthrough.

Disclosure of Invention

The invention aims to provide a rear end structure of a radial flow fan of a rail transit passenger car. The invention has the advantages of light weight, good vibration damping effect, difficult noise occurrence and convenient installation.

The technical scheme of the invention is as follows: a rear end structure of a track traffic passenger car radial flow fan comprises an aluminum alloy inner ring, wherein aluminum alloy bosses are respectively arranged on the front side and the rear side of the middle part of the aluminum alloy inner ring, a mounting groove is arranged beside one aluminum alloy boss, and the mounting groove is arranged on the aluminum alloy inner ring; a rubber ring is sleeved on one side of the aluminum alloy inner ring, which is provided with the mounting groove; the rubber ring comprises a boss rubber ring sleeved on the aluminum alloy boss, an embedded rubber ring arranged in the mounting groove and a rubber outer ring sleeved on the aluminum alloy inner ring.

In the rear end structure of the radial flow fan of the rail transit passenger car, the rubber outer ring is connected with the nested lug; the outer edge of the nested rubber ring is provided with a nested groove.

In the rear end structure of the radial flow fan of the rail transit passenger car, a threaded hole is formed in the aluminum alloy boss on the side, where the mounting groove is not formed, of the aluminum alloy inner ring.

In the rear end structure of the radial flow fan of the rail transit passenger car, the outer edges of the boss rubber ring and the nested rubber ring are provided with chamfers.

In the rear end structure of the radial flow fan of the rail transit passenger car, the center of the aluminum alloy inner ring is provided with the mounting hole.

In the rear end structure of the radial flow fan of the rail transit passenger car, the boss rubber ring is arranged in the mounting groove.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention carries out engineering topology optimization through material test and structure test. Most of the rear end structure of the radial flow fan is made of rubber, and the groove design is adopted, so that the aim of light weight of the overall parts is fulfilled.

2. The end structure of the invention uses a rubber ring structure, and the design of the rubber structure can buffer the impact force and reduce the vibration of the fan, thereby reducing the noise.

3. The rubber outer ring adopted by the invention can effectively avoid friction heat generation and reduce heat transfer, and meanwhile, compared with aluminum alloy, the rubber outer ring can also reduce the transmission of fan vibration, reduce noise and prolong the overall service life of the machine.

4. The invention overturns the structure that the rear end of the traditional radial flow fan is assembled through the bolt, and is installed by using the nested rubber ring and the nested bulges, thereby not only being convenient and rapid, but also playing a role in assembling and fixing with the radial flow fan. The simple and easy swift of mounting means can also play the effect that improves production efficiency, practices thrift the human cost of enterprise.

5. The structure of the invention is that the aluminum alloy inner ring is wrapped by the rubber ring, and the structure of the invention can be directly nested in the radial flow fan, thus being convenient for installation.

6. The mounting groove is designed on the aluminum alloy inner ring, the design of the mounting groove is convenient for workers to pinch the boss of the aluminum alloy inner ring by fingers to mount the rubber ring, and the weight of the whole part can be reduced, so that the rear end structure is lighter.

7. The outer edges of the boss rubber ring and the nested rubber ring are provided with the chamfers, so that the structure of the radial flow fan fixing shaft can be better matched with the radial flow fan fixing shaft for operation, scratch can be prevented, and the attractive effect is improved.

8. The threaded hole is formed in the boss of the aluminum alloy inner ring, the threaded hole plays a role in fixing the fixing shaft by matching with a screw, the problem that vibration and noise are generated due to the fact that the fixing shaft connected with the radial flow fan is loosened by the structure of the aluminum alloy inner ring boss is solved, and the threaded hole has a noise reduction function.

9. The structure of the invention is assembled by the rubber ring and the aluminum alloy inner ring, compared with the rear end structure of the existing radial flow fan, the diameter of the outer ring of the existing rear end structure can be greatly reduced, namely the diameter of the rubber ring is reduced, so the structure of the invention is lighter.

10. When the vibration-damping radial flow fan is used, the fixed shaft and the aluminum alloy inner ring collide to generate vibration, and the rubber outer ring can well buffer the vibration, so that the low-noise radial flow fan is realized. The rubber nesting groove can be well assembled with the radial flow fan, the installation and the picking are simple and convenient, and the machine is convenient to maintain and repair.

11. Compared with the rear end material of the existing radial flow fan, the rubber structural material has the advantages of reducing friction vibration, low noise, corrosion resistance and flame retardance.

In summary, the following steps: the invention has the advantages of light weight, good vibration damping effect, difficult noise generation, convenient installation and the like.

Drawings

FIG. 1 is a structure of the present invention;

FIG. 2 is a schematic structural view of an aluminum alloy inner ring;

FIG. 3 is a schematic top view of the present invention;

FIG. 4 is a schematic left side view of the present invention;

fig. 5 is a schematic front view of the present invention.

The labels in the figures are: the aluminum alloy sealing ring comprises 1-an aluminum alloy inner ring, 2-an aluminum alloy boss, 3-a mounting groove, 4-a nested rubber ring, 5-a boss rubber ring, 6-a rubber outer ring, 7-a nested lug, 8-a threaded hole, 9-a nested groove and 10-a mounting hole.

Detailed Description

The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.