KR102267940B1 - Airfoil shape plate for disk brake and braking module having the same - Google Patents

Abstract

In the spar plate for a braking disc and a braking module including the same, the spar plate for the braking disc is located at the front end of the braking disc, and includes a side frame and an upper and lower frame. The side frame includes a pair of left and right frames facing each other. The upper and lower frames face each other and include a pair of upper and lower frames connected to the left and right frames to form an opening therein. In this case, air flows through the opening and is provided to the brake disk, thereby effectively cooling the brake disk.

Description

Airfoil plate for braking disc and braking module including same {AIRFOIL SHAPE PLATE FOR DISK BRAKE AND BRAKING MODULE HAVING THE SAME}

The present invention relates to an airfoil plate for a brake disk and a brake module including the same, and more particularly, to a brake disk of a railway vehicle, which can easily dissipate heat generated from the brake disk during braking to perform effective cooling. It relates to an airfoil plate for a brake disc and a brake module including the same.

The energy required for braking increases with the speeding up of the railway vehicle, and consequently, the thermal energy of the braking disk generated during braking of the railway vehicle is constantly increasing.

In general, when braking of such a railway vehicle, the braking disk is performed during braking by frictional force with the braking pad, and according to the friction, both the braking disk and the braking pad emit thermal energy, and the braking disk is the generated thermal energy. The heat energy is dissipated in such a way that the material absorbs it and radiates it to the outside through heat transfer by convection.

Accordingly, in order to improve the amount and absorption rate of thermal energy absorbed by the brake disk, a number of technologies for variously deforming the shape or structure of the brake disk have been developed, and Korean Patent Registration No. 10-1866046 is representative.

However, it is impossible to remove all the thermal energy generated from the brake disk only by modifying the shape or structure of the brake disk as described above. There is a need to develop technology for a method of dissipating thermal energy to the outside.

Republic of Korea Patent No. 10-1866046

Accordingly, the technical problem of the present invention has been conceived in this regard, and an object of the present invention is to provide a brake disk provided in a brake disk of a railway vehicle to easily dissipate heat generated from the brake disk during braking to perform effective cooling. It relates to the airfoil plate for the dragon.

In addition, another object of the present invention relates to a braking module including the spar plate for the braking disk.

The airfoil plate for a brake disk according to an embodiment for realizing the object of the present invention is located at the front end of the brake disk, and includes a side frame and an upper and lower frame. The side frame includes a pair of left and right frames facing each other. The upper and lower frames face each other and include a pair of upper and lower frames connected to the left and right frames to form an opening therein. In this case, air flows through the opening and is provided to the brake disc.

In one embodiment, a cross-section in a direction perpendicular to the extending direction of the left and right frames may be a 翼型 (airfoil).

In one embodiment, a cross-section in a direction perpendicular to the extending direction of the upper and lower frames may be 翼型 (airfoil).

In one embodiment, in each of the left and right frames, and the upper and lower frames, the front end may have a streamlined shape, and the thickness may decrease from the center to the rear end.

In an embodiment, in each of the left and right frames, and the upper and lower frames, an inner surface may have a greater curvature than an outer surface, and the inner surface may protrude inward.

In one embodiment, the air, passing through the opening may increase the flow rate and flow rate.

A brake module according to an embodiment for realizing the object of the present invention includes a plurality of brake disks and a plurality of airfoil plates for the brake disk. Each of the spar plates for the brake disc includes a side frame including a pair of left and right frames facing each other, and a pair of upper portions facing each other and connected to the left and right frames to form an opening therein. and an upper and lower frame including lower frames. Air flows through the opening and is provided to the brake disc.

In one embodiment, the braking module includes a plurality of braking pads each positioned on one side of the braking disks, a cylinder unit fixing the braking pads and connected to the bogie, and fixing the airfoil plates and connected to the bogie It may further include a connection unit to be.

In one embodiment, the cylinder unit and the connection unit may be a bar extending parallel to each other.

In an embodiment, the cylinder unit and the connection unit may be disposed to be spaced apart from each other at a predetermined interval along an outer circumferential surface of the brake disk.

According to embodiments of the present invention, an airfoil plate is provided to form a predetermined opening at the front end of the brake disk, and as the four frames of the airfoil plate are formed to have an airfoil shape in cross section, The flow rate of the air increases and the flow rate increases, and the air having the increased flow rate and flow rate is provided to the brake disk at the rear end, thereby allowing the brake disk to cool the heat generated during braking more quickly.

Thus, it is possible to improve the cooling efficiency of the brake disk to increase the braking force or to improve the durability of the brake disk and the brake pad.

In addition, the airfoil plates can be stably fixed to the front end of the braking disk by connecting the spar plates to the bogie through a separate connection unit to fix the positions of the airfoil plates.

In this case, in order to avoid interference with the brake pads already installed on the brake disk, the connection unit may be disposed to be parallel to the cylinder unit for fixing the brake pads and to be spaced apart from each other by a predetermined distance.

1 is a conceptual diagram for explaining the principle of the airfoil plate according to an embodiment of the present invention.
2 is a perspective view illustrating a state in which an airfoil plate according to an embodiment of the present invention is disposed at the front end of a brake disc of a railway vehicle.
3A is a cross-sectional view taken along lines a-a' and b-b' of FIG. 2, and FIG. 3B is a cross-sectional view illustrating the velocity of the flow rate through the cross-sectional view of FIG. 3A.
4 is a perspective view illustrating a braking module according to another embodiment of the present invention.

Since the present invention may have various changes and may have various forms, embodiments will be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements. Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms.

The above terms are used only for the purpose of distinguishing one component from another. The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as "comprises" or "consisting of" are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification is present, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a conceptual diagram for explaining the principle of the airfoil plate according to an embodiment of the present invention.

Referring to FIG. 1 , when air flows in a state in which an airfoil plate having an airfoil shape in cross-section is positioned, the flow rate increases in the upper portion of the airfoil plate according to Bernoulli's principle. .

As such, when the flow velocity increases at the top of the spar plate, a low pressure region is formed on the upper side, and when the low pressure region is formed on the upper side, the air introduced toward the spar plate enters the low pressure region first, Accordingly, in the low pressure region, that is, the upper side of the airfoil plate, the flow rate increases as well as the flow rate.

2 is a perspective view illustrating a state in which an airfoil plate according to an embodiment of the present invention is disposed at a front end of a brake disc of a railway vehicle. 3A is a cross-sectional view taken along lines a-a' and b-b' of FIG. 2, and FIG. 3B is a cross-sectional view illustrating the velocity of the flow rate through the cross-sectional view of FIG. 3A.

2 to 3B , the airfoil plate 10 in this embodiment is positioned at the front end of the brake disc 20 of a railway vehicle, has a rectangular plate shape as a whole, and an opening 101 is formed in the center do.

Thus, the air provided from the outside is provided to the brake disk 20 through the opening as shown in FIG. 2 , and heat generated during braking in the brake disk 20 through the air provided in this way is cooled. do.

More specifically, the airfoil plate 10 includes a side frame 100 and an upper and lower frame 200 .

The side frame 100 is a frame positioned on both sides in the first direction X, and is located on the left side along the first direction X, that is, on the left side with the brake disk 20 as the center. It includes a frame 110 and a right frame 120 positioned on the right side along the first direction X, that is, on the right side with respect to the brake disk 20 .

In this case, the left and right frames 110 and 120 are spaced apart from each other by a predetermined distance and disposed to face each other.

In addition, the left and right frames 110 and 120 extend by a predetermined length in a third direction (Z) perpendicular to the first direction (X).

The upper and lower frames 200 are frames positioned on both sides, that is, up and down, respectively, along the third direction Z, and are located at the upper side in the third direction Z, that is, with the brake disk 20 as the center. It includes an upper frame 210 positioned at an upper portion, and a lower frame 220 positioned at a lower portion along the third direction Z, that is, a lower frame centering on the brake disk 20 .

In this case, the upper and lower frames 210 and 220 are also spaced apart from each other by a predetermined distance and disposed to face each other.

In addition, the upper and lower frames 210 and 220 extend by a predetermined length in the first direction (X).

In addition, the upper and lower frames 210 and 220 and the left and right frames 110 and 120 have ends connected to each other to form a closed loop, and thus have a rectangular shape as a whole, and an opening with an open center. It is formed with a plate forming 101 .

In this case, the left and right frames 110 and 120 and the upper and lower frames 210 and 220 may be integrally formed, and may be individually manufactured and then connected to each other.

In addition, an area occupied by the opening 101 is relatively larger than the thickness of each of the left and right frames 110 and 120 and the upper and lower frames 210 and 220 , and thus Air drawn in from the outside naturally passes through the opening 101 and is provided to the brake disk 20 .

Meanwhile, referring to FIG. 3A , the left and right frames 110 and 120 are cut in a direction perpendicular to the extending direction of the left and right frames 110 and 120 , that is, along the first direction X. The shape of one cross-section is each formed into an airfoil.

That is, when the cut cross-sections of the left and right frames 110 and 120 are observed along the third direction Z, they are formed into airfoils.

Similarly, the upper and lower frames 210 and 220 also have a cross-sectional shape cut in a direction perpendicular to the extending direction of the upper and lower frames 210 and 220, that is, in the third direction Z, respectively. It is formed into an airfoil.

That is, when the cut cross-sections of the upper and lower frames 210 and 220 are observed along the first direction Z, they are formed into airfoils.

In this case, cut sections of the left and right frames 110 and 120 and cut sections of the upper and lower frames 210 and 220 may all have the same shape.

In the present embodiment, the front end of the left and right frames 110 and 120 as well as the upper and lower frames 210 and 220, in the airfoil, the outside air is introduced FRONT ), and the rear end faces toward the side (REAR) where the brake disk 20 is located.

That is, the portion facing the front end (FRONT) has a streamlined shape, the thickness increases from the front end to the center, and the thickness decreases from the center to the rear end (REAR).

On the other hand, the inner surfaces 111 and 121, which are surfaces facing each other of the left and right frames 110 and 120, are curved with a greater curvature than the outer surfaces 112 and 122, and the inner surfaces 111 , 121) is formed to protrude toward the inside.

That is, from the front end to the center, the distance between the inner surfaces 111 and 121 becomes narrower. From the center to the rear end, the distance between the inner surfaces 111 and 121 becomes wider.

Similarly, the inner surfaces 211 and 222, which are surfaces facing each other of the upper and lower frames 210 and 220, are curved with a greater curvature than the outer surfaces 212 and 222, and the inner surfaces 211 , 222) is formed to protrude toward the inside.

That is, from the front end to the center, the distance between the inner surfaces 211 and 221 becomes narrower, and from the center to the rear end, the distance between the inner surfaces 211 and 221 becomes wider.

As the cross section of the airfoil shape is formed as described above, referring to FIGS. 1 and 3B , the air introduced from the outside toward the front end FRONT is between the inner surfaces 111 , 121 , 211 and 221 . That is, while passing through the opening 101 , both the flow rate and the flow rate increase, and the increased flow rate and flow rate are provided to the braking disk 20 .

Thus, in comparison with the case where the airfoil plate 10 is not located at the front end of the brake disk 20 , the flow rate and flow rate of the air supplied to the brake disk 20 increases, and accordingly, the brake disk 20 increases. The cooling efficiency for (20) is further increased.

4 is a perspective view illustrating a braking module according to another embodiment of the present invention.

The braking module 1 in this embodiment is characterized in that a plurality of the spar plates described with reference to FIGS. 2 to 3B are provided on each braking disk, and in this case, each of the spar plates is Since it is the same as that described with reference to FIGS. 3B , a redundant description will be omitted.

Referring to FIG. 4 , the braking module 1 in this embodiment includes a plurality of airfoil plates 31 and 32 positioned on each of the plurality of braking disks 21 , 22 , 23 connected to the axle 40 . , 33 ), a plurality of braking pads 51 , 52 , 53 positioned on each of the braking disks 21 , 22 , 23 , a cylinder unit 60 , and a connection unit 70 .

Meanwhile, in FIG. 4 , three brake disks and three airfoil plates and brake pads respectively provided thereto are illustrated, but for convenience of description, the number is not limited thereto.

As described above, each of the airfoil plates 31, 32, and 33 is positioned at the front end of each of the braking disks 21, 22, and 23, and the connecting unit 70 is connected to the plurality of airfoil plates. Connect (31, 32, 33) to each other.

In this case, the connecting unit 70 has a bar shape extending in a direction parallel to the extension direction of the axle 40, and the plurality of airfoil plates ( 31, 32, 33) are all fixed.

The connecting unit 70 is extended by connecting all of the plurality of airfoil plates 31, 32, and 33 as described above, and although not shown, both ends may be fixed to the bogie of a railroad vehicle. Thus, the airfoil plates 31 , 32 , 33 are ultimately fixed to the bogie of the railway vehicle.

In addition, as shown, between the spar plates 31 , 32 , 33 and the connecting unit 70 , an extension bar 71 extending from the side of each of the spar plates 31 , 32 , 33 . can be connected to each other through

However, the structure or shape of the extension bar 71 , and furthermore, the airfoil plates 31 , 32 , 33 and the connection unit 70 are not limited to the illustrated ones, and may be connected in various connection structures.

On the other hand, on the brake disks 21 , 22 , and 23 , the brake pads 51 , 52 , 53 are respectively positioned on the brake disks 21 , 22 , and 23 , and the brake pads 51 , 52 , 53 are disposed on the airfoil. The plates 31 , 32 , 33 are positioned on the brake discs 21 , 22 , 23 so as not to interfere with each other.

In this case, the cylinder unit 60 extends by connecting all of the braking pads 51 , 52 , and 53 , and both ends of the cylinder unit 60 are fixed to the bogie of the railway vehicle.

Thus, the brake pads 51 , 52 , 53 are also ultimately fixed to the bogie of the railway vehicle.

On the other hand, the cylinder unit 60 may extend in parallel with the connection unit 70, and in this case, the cylinder unit 60 and the connection unit 70 are spaced apart from each other by a predetermined distance, and interfere with each other. positioned so that it does not

That is, the cylinder unit 60 may be positioned to be spaced apart from each other by a predetermined distance along the circumferential direction of the brake disks 21 , 22 , and 23 with respect to the connection unit 70 , thereby avoiding mutual interference. can be

In addition, the cylinder unit 60 is fixed to each of the brake pads 51 , 52 , 53 through a separate cylinder bar 61 , and in this case, the cylinder bar 61 is connected to the brake pads ( 51 , 52 , 53 is extended from the upper side and fixed to the cylinder unit 60 , but the structure or shape thereof is not limited thereto.

According to embodiments of the present invention, an airfoil plate is provided to form a predetermined opening at the front end of the brake disk, and as the four frames of the airfoil plate are formed to have an airfoil shape in cross section, The flow rate of the air increases and the flow rate increases, and the air having the increased flow rate and flow rate is provided to the brake disk at the rear end, thereby allowing the brake disk to cool the heat generated during braking more quickly.

Thus, it is possible to improve the cooling efficiency of the brake disk to increase the braking force or to improve the durability of the brake disk and the brake pad.

In addition, the airfoil plates can be stably fixed to the front end of the braking disk by connecting the spar plates to the bogie through a separate connection unit to fix the positions of the airfoil plates.

In this case, in order to avoid interference with the brake pads already installed on the brake disk, the connection unit may be disposed to be parallel to the cylinder unit for fixing the brake pads and to be spaced apart from each other by a predetermined distance.

Although the above has been described with reference to the preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the following claims. You will understand that you can.

1: Braking module
10, 31, 32, 33: airfoil plate
20, 21, 22, 23: brake disc 40: axle
51, 52, 53: brake pad 60: cylinder unit
70: connection unit 100: side frame
110: left frame 120: right frame
200: upper and lower frame 210: upper frame
220: lower frame
101, 311, 321, 331: opening

Claims (10)

a plurality of brake discs fixed to the axle;
a plurality of spar plates for braking discs positioned at the front end of each of the braking discs;
a plurality of brake pads each positioned on one side of the brake disks;
a cylinder unit fixing the brake pads and connected to the bogie; and
and a connecting unit that fixes the airfoil plates and is connected to the bogie,
Each of the spar plates for the brake disc,
a side frame including a pair of left and right frames facing each other; and
and an upper and lower frame facing each other and including a pair of upper and lower frames connected to the left and right frames to form an opening therein,
Air flows through the opening and is provided to the brake disc,
The brake module, characterized in that the cylinder unit and the connection unit are bars extending parallel to each other. According to claim 1,
The braking module, characterized in that the cross-section in a direction perpendicular to the extending direction of the left and right frames is 翼型 (airfoil). 3. The method of claim 2,
The braking module, characterized in that the cross-section in a direction perpendicular to the extending direction of the upper and lower frames is 翼型 (airfoil). 4. The method of claim 3,
In each of the left and right frames, and the upper and lower frames, the front end has a streamlined shape, and the braking module has a shape that decreases in thickness from the center to the rear end. 4. The method of claim 3,
In each of the left and right frames, and the upper and lower frames,
A braking module, characterized in that the inner surface has a greater curvature than the outer surface, and the inner surface protrudes toward the inner side. According to claim 1, wherein the air,
A braking module, characterized in that the flow rate and flow rate increase through the opening. delete delete delete According to claim 1,
The cylinder unit and the connection unit are arranged to be spaced apart from each other at a predetermined interval along an outer circumferential surface of the brake disk.

Images