KR200464509Y1 - Low noise wheel - Google Patents

Abstract

The soundproof wheel according to the present invention is generated from the wheel body described above through contact friction with the wheel body and the wheel body provided with a contact surface coupled to the axle while contacting the rail and inclined toward the axle while integrally rotating. Ring dampers made of a metal material absorbing the vibrations to form the outer circumferential surface corresponding to the aforementioned contact surface and fixed to the wheel body described above, and are spaced apart from each other along the inner circumferential surface of the ring damper described above, or from the aforementioned axle. And a damping member extending to the contact surface and mounted between the above-described wheel body and the above-mentioned ring damper to absorb vibration generated from the above-described wheel body through plastic deformation and viscous damping.

Description

Soundproofing Wheels {LOW NOISE WHEEL}

The present invention relates to a soundproof wheel, and more particularly to a soundproof wheel that can effectively reduce the vibration and noise generated from the wheel body by the damping member, in particular friction noise.

Recently, as the construction of subways, light rail and high-speed railways has been actively carried out, measures to reduce noise and vibration have also emerged as the biggest challenges.

In the low speed range (80 km / h or less), the noise generated from the propulsion system generally acts as one of the biggest sources of noise. In the medium speed range (80 km / h / 250 km / h), the noise generated by the interaction between the wheel body and the rail is the largest. It acts as one of the sources of noise.

Among them, the noise caused by the propulsion system can be effectively reduced by establishing countermeasures for the device itself, but the noise caused by the interaction between the wheel body and the rail is very complicated and diverse. Various reduction measures are applied, such as a method, a method of supplying lubricant to the wheel surface or the rail surface to reduce noise caused by the contact between the wheel body and the rail.

Noise caused by the interaction between the wheel body and the rail is caused by rolling noise generated in a straight section according to the generating mechanism, squeal noise and wheel howing noise generated in a curved section, a turnout and It is largely divided into impact noise generated at the joint of the rail.

Among these noises, especially in subways or light rail trains with a large number of sections of curved rails, friction noise is frequently generated, thereby increasing the inconvenience of users.

Frequent occurrence of friction noise in a large section of curved rails such as subways or light rails is fixed to both ends of the axle, which is in contact with the rails and interlocks with the axles, and the inner structure of the wheel body is provided with a predetermined side slope. Is caused.

That is, the step surface of the wheel body in contact with the rail is inclined so that the distance from the center of the axle to the contact of the wheel body in contact with the rail can be adjusted so that the curved rail can travel.

However, since the axle and the wheel body are integrally rotated in a firmly fixed state so as not to allow flow, the wheel body on the curved rail is difficult to perform smooth curve running due to its structural characteristics.

That is, the wheel body slides in the transverse direction on the rail surface of the rail due to the shape of the answer surface having a predetermined gradient, and the inherent mode of the wheel body is excited while passing the stick-slip state. Structure-borne noise turns into air-borne noise, resulting in very large vibrations and noise.

The vibration and noise described above may also be generated by friction between the wheel body and the brake during braking.

The present invention devised to improve the above problems relates to effectively reducing vibrations and noises generated from the wheel body, in particular, friction sounds.

In addition, the present invention relates to the damping member to be easily installed in the wheel body.

The soundproof wheel according to the present invention is generated from the wheel body described above through contact friction with the wheel body and the wheel body provided with a contact surface coupled to the axle while contacting the rail and inclined toward the axle while integrally rotating. Ring dampers made of a metal material absorbing the vibrations to form the outer circumferential surface corresponding to the aforementioned contact surface and fixed to the wheel body described above, and are spaced apart from each other along the inner circumferential surface of the ring damper described above, or from the aforementioned axle. A structure including a damping member extending to the contact surface and mounted between the wheel body and the ring damper described above to absorb vibration generated from the wheel body through plastic deformation and viscous damping may be applied.

As described above, the soundproof wheel according to the present invention has the following advantages.

First, according to a structure including a damping member together with a ring damper mounted to the wheel body, it is possible to fundamentally block the noise generated by the above-described vibration and the vibration generated from the wheel body.

In addition, according to the structure in which the damping member mounted between the ring damper and the wheel body is fixed to be spaced apart along the inner circumferential surface of the ring damper, the fastening operation can be easily performed regardless of skill.

1 is an exploded perspective view showing the overall structure of a sound insulation wheel according to an embodiment of the present invention
Figure 2 is an exploded perspective view showing the overall structure of the sound insulation wheel according to another embodiment of the present invention
Figure 3 is an exploded perspective view showing the overall structure of the sound insulation wheel according to another embodiment of the present invention
Figure 4 is a front conceptual view showing the overall structure of the sound insulation wheel according to another embodiment of the present invention
5 and 6 is a cross-sectional conceptual view showing the overall structure of the sound insulation wheel according to another embodiment of the present invention
7 is a perspective view showing a partial structure of a damping member which is a main part of a sound insulation wheel according to another embodiment of the present invention

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

This is intended to be illustrative in nature to enable those skilled in the art to readily implement the invention, and this does not mean that the technical idea and scope of the invention is limited.

In addition, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of description, terms specifically defined in consideration of the configuration and operation of the present invention will vary depending on the intention or custom of the user or operator The definitions of these terms should be made based on the contents throughout the specification.

1 is an exploded perspective view showing the overall structure of a sound insulation wheel according to an embodiment of the present invention.

Soundproof wheel according to an embodiment of the present invention can be seen that the structure including the wheel body 100, the ring damper 200, the damping member 300 as shown.

The wheel body 100 is coupled to the axle 400 to rotate integrally in contact with the rail 500, the contact surface 110 is inclined toward the axle 400 is provided, which supports the axle 400 as a whole The bearing portion 101, the answer surface portion 103 in contact with the rail 500, and the reinforcement portion 102 that connects between the bearing portion 101 and the answer surface portion 103.

Ring damper 200 is made of a durable metal material such as stainless steel to form a ring shape as a whole to absorb the vibration generated through contact friction with the wheel body 100, the outer peripheral surface corresponding to the contact surface 110 Form 210 is to be fixed to the wheel body (100).

Damping member 300 is a plurality of spaced apart along the inner circumferential surface 220 of the ring damper 200, and serves to absorb the vibration generated from the wheel body 100 through the elastic deformation and viscous damping.

The present invention can be applied by the embodiment as described above, will be described in more detail for the main part of the present invention for a more detailed description.

As described above, the wheel body 100 is coupled to the axle 400 to contact the rail 500 while integrally rotating to provide a space in which the ring damper 200 and the damping member 300 are mounted.

The ring damper 200 serves to absorb vibration generated through contact friction with the wheel body 100 as described above, and the contact surface 110 of the wheel body 100 by a fastening member 600 such as a wrench bolt. It is fixed to the), and because it is a mass body made of a metal material such as stainless steel changes the natural frequency as the mass of the wheel body 100 and the axle 400 is increased.

That is, since the natural frequency of the object is proportional to the square root of stiffness and inversely proportional to the square root of mass, the wheel body 100 equipped with the ring damper 200 has a lower natural frequency than the existing wheel body.

Therefore, the wheel body 100 of the soundproof wheel according to the exemplary embodiment of the present invention may be changed so that the vibration mode of the wheel body 100 is reduced in the generation of friction sound by the change of the natural frequency as described above.

Meanwhile, the damping member 300 serves to absorb the vibration generated from the wheel body 100 together with the ring damper 200 as described above. Referring to FIGS. 1 to 4, the support block 310 may be used. And, it can be seen that the structure including the damping pad 320 and the finishing pad 330.

The support block 310 corresponds to the shape of the inner circumferential surface 220 of the ring damper 200, and forms a surface having an arc-shaped cross section along the forming direction of the ring damper 200 to form the inner circumferential surface 220 of the ring damper 200. Accordingly, it is fixed to face each other and made of a metal material, it can be said to be a part that serves as a fixed end of the vibration.

Damping pad 320 is made of an elastic material that is mounted on the surface of the support block 310 to absorb the vibration generated from the wheel body 100, and becomes part of the free end of the vibration.

The closing pad 330 is made of a metal material that is mounted to the damping pad 320 and closes the surface of the support block 310 in a shape corresponding to the damping pad 320, and becomes a part of the free end of the damping pad 320. ) To protect against external physical and chemical shocks.

Here, it is preferable that the damping pad 320 and the finishing pad 330 are sequentially stacked on the surface of the support block 310 at least once or more times.

In addition, the sound insulation wheel according to an embodiment of the present invention is to be assembled by dividing the ring damper 200 into at least one circular arc shape in the direction in which the contact surface 110 of the wheel body 100 is formed and the axle 400 and Even if the wheel body 100 is fastened to each other, it may be possible to enable additional assembly, replacement and inspection.

Meanwhile, the soundproof wheel according to another exemplary embodiment of the present invention may apply the first auxiliary damping member 300 ′ as shown in FIGS. 3 to 6.

The first auxiliary damping member 300 ′ extends from the axle 400 side to the contact surface 110 side and is mounted between the wheel body 100 and the ring damper 200, and the wheel body (through elastic deformation and viscous damping). It serves to absorb the vibration generated from 100).

For reference, the wheel body 100, the ring damper 200, and the damping member 300 are substantially the same as the above-described embodiment, and thus are omitted for convenience.

As described above, the first auxiliary damping member 300 ′ extends from the outer circumferential surface of the bearing portion 101 to which the axle 400 is coupled to the contact surface 110 to be mounted between the wheel body 100 and the ring damper 200. It has a structure that becomes.

The first auxiliary damping member 300 ′ serves to absorb vibration generated from the wheel body 100 through plastic deformation and viscous damping together with the damping member 300. Preferably, the first auxiliary damping member 300 ′ is divided into at least one fan shape. 7, the cover plate 340 and the damping pad 350 are included.

That is, the first auxiliary damping member 300 ′ also serves as a sound insulation wall that blocks noise by absorbing vibration generated from the wheel body 100.

The cover plate 340 is a pair of metal materials for closing the space between the outer peripheral surface of the bearing portion 101 and the contact surface 110, the damping pad 350 is interposed between the cover plate 340 and elastically deformed and It is made of an elastic material that absorbs the vibration generated from the wheel body 100 while allowing the damping damping.

The cover plate 340 protects the damping pad 350 from external physical and chemical shocks.

Here, the damping member 300 is a damping pad (A) as the outer circumferential surface 210 of the ring damper 200 is pressed against the contact surface 110 of the wheel body 100 by a pressure applied in a direction parallel to the axle 400. 350 can also be seen that the structure is pressed together.

Meanwhile, the soundproof wheel according to another embodiment of the present invention has a second auxiliary damping of elastic material between the outer circumferential surface 210 and the contact surface 110 of the ring damper 200 as shown in FIGS. 1 to 3, 5, and 6. The member 200 ′ is interposed to serve to absorb vibration generated from the wheel body 100 through plastic deformation and viscous damping.

Although the second auxiliary damping member 200 ′ is illustrated as being integrally formed in an annular shape, the second auxiliary damping member 200 ′ may be divided into at least one arc shape along the forming direction of the contact surface 110 for fastening, separating, and checking.

To this end, the ring damper 200 has a seating groove 211 to which the second auxiliary damping member 200 ′ is fixed along the outer circumferential surface 210, and the second auxiliary damping member 200 ′ is a seating groove ( It is fixed to 211 and protrudes along the forming direction of the mounting groove 211.

The second auxiliary damping member 200 ′ may be manufactured using any one of natural rubber, synthetic rubber, or synthetic resin.

Meanwhile, the ring damper 200 is fixed to the contact surface 110 of the wheel body 100 by a fastening member 600 such as a wrench bolt as described above, and the fastening member 600 is axle 400 as shown in FIG. 6. Parallel to the longitudinal direction of the) is coupled to the ring damper 200, it can be seen that to fix the ring damper 200 to the wheel body (100).

At this time, between the end of the fastening member 600, that is, between the head of the wrench bolt and the fastening groove 201 formed in the ring damper 200, as shown in Figure 6 spring washer elastically inclined toward the head side of the wrench bolt ( 610 is preferably interposed.

In addition, although the present invention is not particularly illustrated in addition to the above-described structure, the ring damper 200, the first auxiliary damping member 300 ′, and the second auxiliary damping member 200 ′ are based on the reinforcing part 102. It may be mounted only on one side edge of the answer surface portion 103, as well as mounted on both edges of the answer surface portion 103 may double the absorption and vibration reduction of the vibration and shock.

As described above, it is a basic technical idea that the present invention provides a soundproof wheel that can effectively reduce vibrations and noises generated from the wheel body, in particular, a friction sound, so that the damping member can be easily installed on the wheel body. Able to know.

Although embodiments according to the present invention have been described above, these are merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent ranges of the embodiments are possible.

Therefore, the true technical protection scope of the present invention should be defined by the following claims.

100 ... wheel body 101 ... bearing
102 Reinforcement part 103
110 ... contact surface 111 ... first contact surface
112 ... 2nd contact surface 200 ... ring damper
200 '... 2nd auxiliary damping member 210 ... Outer peripheral surface
211 Seating grooves 220
300 ... damping member 300 '... first auxiliary damping member
310 ... support block 320 ... damping pad
330 ... finish pad 340 ... cover plate
350 ... damping pad 400 ... axle
500 ... rail 600 ... fastening member
610 ... spring washer 700 ... 1st ring damper
710.Outer peripheral surface 800 ... Second ring damper
810.Outer surface

Claims (5)

delete A wheel body which is integrally rotated with the axle and contacts a rail and forms a contact surface inclined toward the axle, a ring damper which is a metal material absorbing vibration of the wheel body and forms an outer circumferential surface corresponding to the contact surface and is fixed to the wheel body; And a plurality of damping members mounted spaced apart along the inner circumferential surface of the ring damper to absorb vibration of the wheel body through plastic deformation and viscous damping, and an elastic material absorbing vibration of the wheel body through plastic deformation and viscous damping. In the sound-proof wheel including a second auxiliary damping member interposed between the outer peripheral surface and the contact surface of the ring damper,
The wheel body extends from the axle side to the contact surface and is mounted to be split at least one between the wheel body and the ring damper, absorbs vibration of the wheel body through elastic deformation and viscous damping, and closes the axle and the contact surface. A pair of cover plates made of metal and damping pads interposed between the cover plates and elastic materials absorbing vibrations of the wheel body while allowing elastic deformation and viscous damping to be applied in a direction parallel to the axle. The outer peripheral surface of the ring damper is pressed by the contact surface of the wheel body by the first sound damping member, characterized in that the damping pad is interlocked in the interlocking manner is provided.
The method of claim 2,
The ring damper and the second auxiliary damping member may be divided into at least one arc shape along a direction in which the contact surface is formed, and a seating groove in which the second auxiliary damping member is fixed is formed along the outer circumferential surface of the ring damper, and the second Auxiliary damping member is fixed to the seating groove, characterized in that configured to protrude along the forming direction of the seating groove.
The method of claim 2,
The damping member is,
A support block formed of a metal material and fixed to face each other along the inner circumferential surface of the ring damper by forming a surface corresponding to the shape of the inner circumferential surface of the ring damper;
A damping pad mounted on a surface of the support block and made of an elastic material absorbing vibration generated from the wheel body;
A closing pad made of a metal material attached to the damping pad in a shape corresponding to the damping pad and closing the surface of the support block;
The damping pad and the finishing pad are repeatedly stacked sequentially from the surface of the support block at least one or more times.


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