Purging device of air brake control valve of railway wagon

Abstract

The utility model discloses a blowing device for an air brake control valve of a railway wagon, which comprises a machine body, a blowing device, a blowing device, a blowing device, a blowing device and a blowing device, the machine body is provided with a horizontally arranged placing plate, and the air brake control valve is used for being placed on the placing plate; the clamping assembly is installed on the machine body and used for clamping and fixing the air brake control valve on the machine body; the blowing assembly is provided with a blowing air channel, the clamping assembly clamps the blowing assembly to the air brake control valve, the blowing air channel is opposite to a hole in the surface of the air brake control valve and communicated with the hole in the surface of the air brake control valve in a sealed mode, and the blowing air channel is provided with a control valve used for controlling connection and disconnection of the blowing air channel. The air brake control valve is fixed to the machine body through the clamping assembly, the purging air channel of the purging assembly is communicated with the hole of the fixed air brake control valve in a sealed mode, the hole channel of the air brake control valve is purged through the purging assembly, mechanical purging is achieved, the operation of manually holding an air gun is replaced, the labor intensity of an operator is reduced, and the working efficiency is improved. The occupational health of operators is guaranteed, and in addition, the stability of the cleaning effect of purging the valve body can be guaranteed through mechanical operation.

Description

Technical Field

[0001] The utility model relates to the technical field of railway freight cars, in particular to a purging device for an air brake control valve of a railway freight car. Background Art

[0002] Railway freight cars mainly transport goods and can be divided into general-purpose freight cars and special-purpose freight cars according to their use.

[0003] Among them, the air brake control valve (for example, 120 valve) of railway freight cars is the control center of freight car braking. The production and maintenance quality of the air brake control valve directly affects the safety of railway operation. Since the air brake control valve has many air passages and a small aperture, it is easy for dirt, sludge and other debris to accumulate in the air brake control valve during production and use. And the debris can easily block the air passage of the air brake control valve, thereby causing the air brake control valve to fail, posing a serious hidden danger to the safety of railway freight car operation.

[0004] Based on the above problems, railway freight cars need to be inspected regularly according to regulations. During the inspection and maintenance of railway freight cars, the valve body of the air brake control valve needs to be cleaned several times to ensure the cleanliness of the air brake control valve. At present, after the valve body is cleaned, the water stains remaining inside are manually blown away by inserting a handheld air gun into the inner cavity of the valve body to clean the internal water droplets.

[0005] Since the air brake control valve has many holes and complex paths inside the valve body, the operator needs to repeatedly insert the air gun into each hole during the manual blowing of the inner cavity, which makes the labor intensity high; and in the process of compressed air passing through the inner cavity of the valve body, a large whistling noise will be generated, which has a certain impact on the occupational health of the operators; in addition, the stability of manual operation is poor, and there is a problem of incomplete blowing of water droplets inside the valve body, which affects the subsequent assembly and performance of the valve body.

[0006] Therefore, how to provide a purging device for the air brake control valve of a railway freight car to reduce the labor intensity of operators is a technical problem that needs to be solved urgently in this field. Utility Model Content

[0007] In view of this, the utility model provides a purging device for an air brake control valve of a railway freight car to reduce the labor intensity of operators.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A purging device for an air brake control valve of a railway freight car, comprising:

[0010] A machine body, wherein the machine body has a horizontally arranged placement plate, and the air brake control valve is used to be placed on the placement plate;

[0011] A clamping assembly, which is installed on the body and is used to clamp and fix the air brake control valve on the body;

[0012] A purging assembly, on which a purging air passage is provided. The clamping assembly clamps the purging assembly to the air brake control valve, and the purging air passage is opposite to and hermetically communicated with the holes on the surface of the air brake control valve. A control valve for controlling the on / off of the purging air passage is provided in the purging air passage.

[0013] Preferably, in the purging device for the air brake control valve of the above-mentioned railway freight car, the clamping assembly includes:

[0014] A first cylinder, which is opposite to the placement plate and is used to clamp the first surface of the air brake control valve. The second surface of the air brake control valve is attached to the placement plate;

[0015] The first surface and the second surface are opposite, and the first surface is an installation surface for installing the lower cover of the main valve of the air brake control valve, and the second surface is an installation surface for installing the upper cover of the main valve of the air brake control valve.

[0016] Preferably, in the purging device for the air brake control valve of the above-mentioned railway freight car, the purging assembly includes:

[0017] A first purging tooling plate, the first cylinder is used to clamp the first purging tooling plate between the first cylinder and the first surface of the air brake control valve, and the purging air passage of the first purging tooling plate is communicated with the holes on the first surface;

[0018] A fifth purging tooling plate, which is used to be attached to the second surface of the air brake control valve, and the purging air passage of the fifth purging tooling plate is communicated with the holes on the second surface.

[0019] Preferably, in the purging device for the air brake control valve of the above-mentioned railway freight car, the clamping assembly further includes:

[0020] A second cylinder, which is used to clamp the third surface of the air brake control valve;

[0021] A third cylinder, which is used to clamp the fourth surface of the air brake control valve;

[0022] The third surface and the fourth surface are opposite. The third surface is an installation surface for connecting with the accelerating release valve, and the fourth surface is an installation surface for installing the main valve of the air brake control valve.

[0023] Preferably, in the purging device of the air brake control valve of the above-mentioned railway freight car, the purging assembly further includes:

[0024] A second purging tooling plate, the second cylinder is used to clamp the second purging tooling plate between the second cylinder and the third surface of the air brake control valve, and the purging air passage of the second purging tooling plate is communicated with the hole on the third surface;

[0025] A third purging tooling plate, the third cylinder is used to clamp the third purging tooling plate between the third cylinder and the fourth surface of the air brake control valve, and the purging air passage of the third purging tooling plate is communicated with the hole on the fourth surface.

[0026] Preferably, in the purging device of the air brake control valve of the above-mentioned railway freight car, the clamping assembly further includes:

[0027] A fourth cylinder, the fourth cylinder is used to clamp the fifth surface of the air brake control valve;

[0028] The fifth surface is an installation surface for connecting with a release valve.

[0029] Preferably, in the purging device of the air brake control valve of the above-mentioned railway freight car, the purging assembly further includes:

[0030] A fourth purging tooling plate, the fourth cylinder is used to clamp the fourth purging tooling plate between the fourth cylinder and the fifth surface of the air brake control valve, and the purging air passage of the fourth purging tooling plate is communicated with the hole on the fifth surface.

[0031] Preferably, in the purging device of the air brake control valve of the above-mentioned railway freight car, the surface of the purging assembly has a shock-absorbing buffer layer.

[0032] Preferably, in the purging device of the air brake control valve of the above-mentioned railway freight car, the purging air passages are arranged in one-to-one correspondence with the holes on the surface of the air brake control valve.

[0033] Preferably, in the purging device of the air brake control valve of the above-mentioned railway freight car, the holes on the surface of the air brake control valve include:

[0034] Mounting holes and inflation holes.

[0035] In an embodiment of the present utility model, a purging device for an air brake control valve of a railway freight car is disclosed. By using a clamping assembly to fix the air brake control valve on the machine body, and sealingly connecting the purging air passage of the purging assembly with the holes of the fixed air brake control valve, the purging assembly is used to purge the holes of the air brake control valve, realizing mechanized purging, replacing the operation of manually holding an air gun, reducing the labor intensity of the operator, and ensuring the occupational health of the operating personnel. In addition, the mechanized operation can ensure the stability of the cleaning effect of the valve body purging. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0037] Figure 1 Structural schematic diagram of the first surface of the air brake control valve disclosed in the embodiment of the present utility model;

[0038] Figure 2 Structural schematic diagram of the second surface of the air brake control valve disclosed in the embodiment of the present utility model;

[0039] Figure 3 Structural schematic diagram of the third surface of the air brake control valve disclosed in the embodiment of the present utility model;

[0040] Figure 4 Structural schematic diagram of the fourth surface of the air brake control valve disclosed in the embodiment of the present utility model;

[0041] Figure 5 Structural schematic diagram of the fifth surface of the air brake control valve disclosed in the embodiment of the present utility model;

[0042] Figure 6 Front view of the purging device for the air brake control valve disclosed in the embodiment of the present utility model;

[0043] Figure 7 Partial top view of the purging device for the air brake control valve disclosed in the embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] The present utility model discloses a purging device for an air brake control valve of a railway freight car to reduce the labor intensity of operating personnel.

[0045] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0046] Hereinafter, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0047] Railway freight cars mainly transport goods and can be divided into general freight cars and special freight cars according to their uses.

[0048] Among them, the air brake control valve (for example, 120 valve) of railway freight cars is the control center of freight car braking. The production and maintenance quality of the air brake control valve directly affect railway operation safety. Since the air brake control valve has many air channels and very small apertures, it is easy to accumulate dirt, sludge and other sundries during production and use. And the sundries are extremely likely to block the air channels of the air brake control valve, thereby causing the braking of the air brake control valve to fail, posing a serious hidden danger to the operation safety of railway freight cars.

[0049] Based on the above problems, it is necessary to regularly detect railway freight cars according to regulations. During the maintenance process of railway freight cars, it is necessary to clean the valve body of the air brake control valve multiple times to ensure the cleanliness of the air brake control valve. At present, after the valve body is cleaned at the present stage, the residual water stains inside are blown by a worker holding an air gun and stretching it into the inner cavity of the valve body to blow the internal water droplets clean.

[0050] Since there are many internal pore channels and complex paths in the valve body of the air brake control valve, during the process of manually blowing the inner cavity, the operator needs to repeatedly insert the air gun into each hole, resulting in a large labor intensity; and during the process of compressed air passing through the inner cavity of the valve body, a large whistling noise will be generated, which has a certain impact on the occupational health of the operator; in addition, the stability of manual operation is poor, and there is a problem that the internal water droplets of the valve body cannot be blown clean, affecting the subsequent assembly and service performance of the valve body.

[0051] Based on this, a blowing device for the air brake control valve of railway freight cars is disclosed in the present application, which mechanizes the blowing of the air brake control valve, replaces manual operation, reduces the labor intensity of the operator, reduces the impact on the health of the operator, and can also ensure the stability of the cleaning effect of the valve body.

[0052] It should be noted that as Figures 1 to 5The shown air brake control valve 100 includes a first surface 11, a second surface 12, a third surface 13, a fourth surface 14, a fifth surface 15, and a sixth surface (not labeled in the figure).

[0053] Among them, the first surface 11 and the second surface 12 are opposite to each other, the third surface 13 and the fourth surface 14 are opposite to each other, and the fifth surface 15 and the sixth surface are opposite to each other. In some embodiments, the first surface 11 is a mounting surface for mounting with the lower cover of the main valve of the air brake control valve 100, the second surface 12 is a mounting surface for mounting with the upper cover of the main valve of the air brake control valve 100, the third surface 13 is a mounting surface for connecting with the quick release valve, the fourth surface 14 is a mounting surface for mounting with the main valve of the air brake control valve 100, and the fifth surface 15 is a mounting surface for connecting with the release valve.

[0054] See Figure 6 and Figure 7 As shown, the purging device of the air brake control valve of the railway freight car in the present application includes: a body 400, a first cylinder 201, a second cylinder 202, a third cylinder 203, a fourth cylinder 204, a first purging tooling plate 301, a second purging tooling plate 302, a third purging tooling plate 303, a fourth purging tooling plate 304, and a fifth purging tooling plate 305.

[0055] Among them, the body 400 has a horizontally arranged placement plate (not labeled in the figure), the air brake control valve 100 is placed on the placement plate, and the second surface 12 of the air brake control valve 100 is in contact with the placement plate.

[0056] The first cylinder 201, the second cylinder 202, the third cylinder 203, and the fourth cylinder 204 are all fixed on the body 400, and the cylinder rods of the first cylinder 201, the second cylinder 202, the third cylinder 203, and the fourth cylinder 204 can clamp the air brake control valve 100 after extending.

[0057] Specifically, the first cylinder 201 is fixed on the upper surface of the body 400 and is used to clamp the first surface 11 of the air brake control valve 100. The first cylinder 201 is opposite to the placement plate and is used to limit the height direction of the air brake control valve 100; the second cylinder 202 and the third cylinder 203 are arranged oppositely, such as Figure 6 arranged left and right as shown in the figure, and the second cylinder 202 is used to clamp the third surface 13 of the air brake control valve 100, and the third cylinder 203 is used to clamp the fourth surface 14 of the air brake control valve 100. By using the second cylinder 202 and the third cylinder 203, the air brake control valve 100 can be limited in the Figure 6 left and right directions as shown in the figure; the fourth cylinder 204 is used to clamp the fifth surface 15 of the air brake control valve 100. Combining Figure 7As shown, the fourth cylinder 204 cooperates with the body 400 to achieve the front-back direction limit of the air brake control valve 100 Figure 6 in the air brake control valve 100.

[0058] It should be noted that the above-mentioned first cylinder 201, second cylinder 202, third cylinder 203 and fourth cylinder 204 serve as the clamping assembly of the entire purging device, and are used to fix the air brake control valve 100 on the body 400.

[0059] In some embodiments, the clamping assembly can also be other structures, such as a limiting plate that can be fixed on the body 400. As long as the structure can fix the air brake control valve 100 on the body 400, it is within the protection scope.

[0060] The first purging tooling plate 301, the second purging tooling plate 302, the third purging tooling plate 303, the fourth purging tooling plate 304 and the fifth purging tooling plate 305 all have purging air channels. By using the purging air channels, purging gas can be blown into the air brake control valve 100 to purge the air channels, mounting holes, etc. of the air brake control valve 100.

[0061] Among them, the first purging tooling plate 301 is connected to the first cylinder 201, and the first cylinder 201 is used to press the first purging tooling plate 301 against the first surface 11 of the air brake control valve 100. Specifically, the first purging tooling plate 301 is connected to the end of the telescopic rod of the first cylinder 201. During the telescopic process of the first cylinder 201, the first purging tooling plate 301 can be driven to move together, so that the first purging tooling plate 301 fits with the air brake control valve 100, and it is ensured that the purging air channel of the first purging tooling plate 301 can be hermetically communicated with the holes on the first surface 11.

[0062] The second purging tooling plate 302 is connected to the second cylinder 202, and the second cylinder 202 is used to press the second purging tooling plate 302 against the third surface 13 of the air brake control valve 100. Specifically, the second purging tooling plate 302 is connected to the end of the telescopic rod of the second cylinder 202. During the telescopic process of the second cylinder 202, the second purging tooling plate 302 can be driven to move together, so that the second purging tooling plate 302 fits with the air brake control valve 100, and it is ensured that the purging air channel of the second purging tooling plate 302 can be hermetically communicated with the holes on the third surface 13.

[0063] The third purging tooling plate 303 is connected to the third cylinder 203, and the third cylinder 203 is used to press the third purging tooling plate 303 against the fourth surface 14 of the air brake control valve 100. Specifically, the third purging tooling plate 303 is connected to the end of the telescopic rod of the third cylinder 203. During the telescopic process of the third cylinder 203, the third purging tooling plate 303 can be driven to move together, so that the third purging tooling plate 303 fits with the air brake control valve 100, and it is ensured that the purging air duct of the third purging tooling plate 303 can be hermetically communicated with the holes on the fourth surface 14.

[0064] The fourth purging tooling plate 304 is connected to the fourth cylinder 204, and the fourth cylinder 204 is used to press the fourth purging tooling plate 304 against the fifth surface 15 of the air brake control valve 100. Specifically, the fourth purging tooling plate 304 is connected to the end of the telescopic rod of the fourth cylinder 204. During the telescopic process of the fourth cylinder 204, the fourth purging tooling plate 304 can be driven to move together, so that the fourth purging tooling plate 304 fits with the air brake control valve 100, and it is ensured that the purging air duct of the fourth purging tooling plate 304 can be hermetically communicated with the holes on the fifth surface 15.

[0065] The fifth purging tooling plate 305 is pressed against the second surface 12 of the air brake control valve 100, and the purging air duct of the fifth purging tooling plate 305 can be hermetically communicated with the holes on the second surface 12.

[0066] It should be noted that the first purging tooling plate 301, the second purging tooling plate 302, the third purging tooling plate 303, the fourth purging tooling plate 304, and the fifth purging tooling plate 305, as the purging components of the air brake control valve 100, can purge the air brake control valve 100. The structure of the purging components can also be other structures that can realize communication with the holes of the air brake control valve 100. The number and arrangement of the purging tooling plates can also be set according to different needs, and all are within the protection scope.

[0067] In the purging device of the air brake control valve of the railway freight car disclosed in this application, by using the clamping component to fix the air brake control valve 100 on the machine body 400, and hermetically connecting the purging air duct of the purging component with the holes of the fixed air brake control valve 100, and using the purging component to purge the holes of the air brake control valve 100, mechanized purging is realized, replacing the operation of manually holding the air gun, reducing the labor intensity of the operator, and ensuring the occupational health of the operators. In addition, the mechanized operation can ensure the stability of the cleaning effect of the valve body purging.

[0068] In order to avoid collisions between the purging tooling plate and the air brake control valve 100 during the clamping of the air brake control valve 100, in some embodiments, shock-absorbing buffer layers are provided on the surfaces of the first purging tooling plate 301, the second purging tooling plate 302, the third purging tooling plate 303, the fourth purging tooling plate 304, and the fifth purging tooling plate 305 to buffer the collision between the purging tooling plate and the air brake control valve 100 and absorb the collision energy. Exemplarily, the shock-absorbing buffer layer is a polyurethane pressing plate layer or a rubber layer.

[0069] As Figures 1 to 5 shown, the fourth surface 14 of the air brake control valve 100 has a first hole 101, a second hole 102, a third hole 103, a fourth hole 104, a fifth hole 105, and a sixth hole 106; the fifth surface 15 of the air brake control valve 100 has a seventh hole 107, an eighth hole 108, a ninth hole 109, a tenth hole 110, and an eleventh hole 111; the second surface 12 of the air brake control valve 100 has a twelfth hole 112 and a thirteenth hole 113; the third surface 13 of the air brake control valve 100 has a fourteenth hole 114, a fifteenth hole 115, a sixteenth hole 116, and a seventeenth hole 117; the first surface 11 of the air brake control valve 100 has an eighteenth hole 118, a nineteenth hole 119, a twentieth hole 120, and a twenty-first hole 121.

[0070] It should be noted that the purging air channels on the purging assembly are arranged in one-to-one correspondence with the holes on the surface of the air brake control valve 100 to ensure the purging effect. In some embodiments, a control valve is provided on each purging air channel to control the on / off of the purging air channel.

[0071] During the actual purging process, the control valves can be closed or opened in a preset order to sequentially purge the holes of the air brake control valve 100. For the specific purging process, refer to the following embodiments:

[0072] First, blow air simultaneously at the twentieth hole 120 and the twenty-first hole 121 on the first surface 11 of the air brake control valve 100 for a blowing duration of t1 to remove the water stains in the two holes, and then proceed to the following steps:

[0073] Seal the air outlets of the thirteenth hole 113 on the second surface 12, the fourteenth hole 114 (the fourteenth hole 114 is a mounting hole), the fifteenth hole 115 on the third surface 13, the eighteenth hole 118, the nineteenth hole 119, the twenty-first hole 121 (the twenty-first hole 121 is a mounting hole) on the first surface 11, the ninth hole 109 on the fifth surface 15, and the fifth hole (the fifth hole is the brake cylinder charging hole) on the fourth surface 14, and start blowing air at the fourth hole 104 (the fourth hole is the train pipe charging hole) on the fourth surface 14 for a blowing duration of t2, thereby completing the purging of the hole of the fourth hole 104.

[0074] Then close the fourth hole 104, and sequentially open the above eight air outlets. While opening an air outlet, close the previous air outlet. The opening duration of each air outlet is t3, so as to realize the purging of the channels of the above eight holes.

[0075] After purging the above eight holes, close the air outlets of other holes, and then blow air to the second hole 102 and the fifth hole 105 on the fourth surface 14 in sequence. Among them, the first hole 101 is communicated with the atmosphere. Close the second hole 102 and the fifth hole 105 in sequence, and blow air to the fifth hole 105 and the second hole 102. The blowing duration is t1 for both, so as to complete the purging of the fifth hole 105 and the second hole 102.

[0076] After that, block the twelfth hole 112 on the second surface 12, the third hole 103 (the third hole 103 is the charging hole of the quick release reservoir) on the fourth surface 14, the sixth hole 106 (the sixth hole 106 is the charging hole of the auxiliary reservoir), the twentieth hole 120 (the twentieth hole is the sandwich valve installation hole) on the first surface 11, and blow air to the seventh hole 107, the tenth hole 110, and the eleventh hole 111 on the fifth surface 15 simultaneously, and the blowing duration is t1. Then block the seventeenth hole 117 (the seventeenth hole 117 is the local pressure reducing valve installation hole) on the third surface 13, and continue blowing for a duration of t1; then open the third hole 103, the sixth hole 106, and the twentieth hole 120, and continue blowing for a duration of t2. Finally, open the twelfth hole 112 and blow for a duration of t4, and then blow air to the eighth hole 108 for a duration of t3.

[0077] Blow air to the fifteenth hole 115, the sixteenth hole 116, the fourteenth hole 114, and the seventeenth hole 117 on the third surface 13 simultaneously, and the blowing duration is t5.

[0078] It should be noted that the above discloses a purging sequence of the holes on the surface of the air brake control valve 100. Of course, the purging sequence can also be adjusted according to other needs.

[0079] For the functions of the holes on the surface of the air brake control valve 100 in this application, reference can be made to the structure and connection relationship of the existing air brake control valve 100 of 120.

[0080] In summary, compared with the manual operation mode, the air brake control valve 100 adopting the purging device in this application can ensure that each purging strictly follows the set sequence to open and close the internal passage of the valve body, and clean the water droplets in the valve cavity. It has a better purging effect than manual operation, improves the quality and stability of valve body maintenance. And when using the purging machine for automatic operation, the operator can stay away from the equipment, avoid the impact of noise on the body, and ensure the occupational health of the operator.

[0081] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0082] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A purging device for an air brake control valve of a railway freight car, characterized in that, Comprising: A body (400) having a horizontally arranged placement plate, and an air brake control valve (100) is for placement on the placement plate; A clamping assembly mounted on the body (400) and for clamping and fixing the air brake control valve (100) on the body (400); A purging assembly provided with a purging air passage. The clamping assembly clamps the purging assembly to the air brake control valve (100), and the purging air passage is oppositely and sealingly communicated with the holes on the surface of the air brake control valve (100). The purging air passage is provided with a control valve for controlling the on-off of the purging air passage.

2. The purging device of the air brake control valve for a railway freight car according to claim 1, characterized in that, The clamping assembly includes: A first cylinder (201) opposite to the placement plate and for clamping the first surface (11) of the air brake control valve (100), and the second surface (12) of the air brake control valve (100) is in contact with the placement plate; The first surface (11) and the second surface (12) are opposite, and the first surface (11) is an installation surface for installing the lower cover of the main valve of the air brake control valve (100), and the second surface (12) is an installation surface for installing the upper cover of the main valve of the air brake control valve (100).

3. The purging device of the air brake control valve for a railway freight car according to claim 2, characterized in that, The purging assembly includes: A first purging tooling plate (301). The first cylinder (201) is for clamping the first purging tooling plate (301) between the first cylinder (201) and the first surface (11) of the air brake control valve (100), and the purging air passage of the first purging tooling plate (301) is communicated with the holes on the first surface (11); A fifth purging tooling plate (305) for fitting with the second surface (12) of the air brake control valve (100), and the purging air passage of the fifth purging tooling plate (305) is communicated with the holes on the second surface (12).

4. The purging device of the air brake control valve for a railway freight car according to claim 1, characterized in that, The clamping assembly further includes: A second cylinder (202) for clamping the third surface (13) of the air brake control valve (100); A third cylinder (203) for clamping the fourth surface (14) of the air brake control valve (100); The third surface (13) and the fourth surface (14) are opposite. The third surface (13) is an installation surface for connecting with the quick release valve, and the fourth surface (14) is an installation surface for installing the main valve of the air brake control valve (100).

5. The purging device of the air brake control valve for a railway freight car according to claim 4, characterized in that, The purging assembly further includes: A second purging tooling plate (302). The second cylinder (202) is for clamping the second purging tooling plate (302) between the second cylinder (202) and the third surface (13) of the air brake control valve (100), and the purging air passage of the second purging tooling plate (302) is communicated with the holes on the third surface (13); The third purging tooling plate (303), the third cylinder (203) is used to clamp the third purging tooling plate (303) between the third cylinder (203) and the fourth surface (14) of the air brake control valve (100), and the purging air passage of the third purging tooling plate (303) is communicated with the holes on the fourth surface (14).

6. The purging device of the air brake control valve for a railway freight car according to any one of claims 1 to 5, characterized in that, The clamping assembly further includes: A fourth cylinder (204), the fourth cylinder (204) is used to clamp the fifth surface (15) of the air brake control valve (100); The fifth surface (15) is an installation surface for connecting with the release valve.

7. The purging device of the air brake control valve for a railway freight car according to claim 6, characterized in that, The purging assembly further includes: A fourth purging tooling plate (304), the fourth cylinder (204) is used to clamp the fourth purging tooling plate (304) between the fourth cylinder (204) and the fifth surface (15) of the air brake control valve (100), and the purging air passage of the fourth purging tooling plate (304) is communicated with the holes on the fifth surface (15).

8. The purging device of the air brake control valve for a railway freight car according to any one of claims 1 to 5, characterized in that, The surface of the purging assembly is provided with a shock absorption and buffer layer.

9. The purging device of the air brake control valve for a railway freight car according to any one of claims 1 to 5, characterized in that, The purging air passages are arranged in one-to-one correspondence with the holes on the surface of the air brake control valve (100).

10. The purging device of the air brake control valve for a railway freight car according to any one of claims 1 to 5, characterized in that, The holes on the surface of the air brake control valve (100) include: Installation holes and inflation holes.

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