Integrated braking device of railway wagon

Abstract

The invention discloses an integrated braking device of a railway wagon, which relates to the technical field of integrated braking devices of railway wagons and comprises a brake valve, an empty and load adjusting device, a release valve, an emergency valve, an air cylinder and a mounting plate, and the brake valve, the empty and load adjusting device, the release valve, the emergency valve and the air cylinder are all integrally mounted on the mounting plate. The brake valve adopts a two-pressure indirect action mode, an action part of the brake valve adopts a diaphragm plate check valve structure, and the empty and load adjusting device adopts a balance fulcrum type lever structure. The brake valve is reasonable in design, due to the fact that all the components are integrated on the mounting plate, pipeline leakage is reduced, mounting space is saved, mounting is convenient, and a main valve of the brake valve adopts a two-pressure indirect action mode; the acting part is of a plunger structure. The empty and load vehicle adjusting device adopts a balance fulcrum type lever structure, and has a larger continuous adjusting range to meet the requirement of pressure adjustment of the empty and load vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated braking devices for railway freight cars, and more particularly to the technical field of integrated braking devices for railway freight cars. 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 uses. General-purpose freight cars refer to vehicles suitable for transporting a variety of goods, such as open cars, covered cars, flat cars, etc. Special-purpose freight cars refer to vehicles that transport a certain type of goods, such as coal cars, container cars, bulk cement cars, etc. Railway freight cars run in trains on the railway, and the load capacity and running speed are important indicators to measure the performance of freight cars. Heavy load and speed increase are the direction of railway freight transportation. Since 2003, China's new railway freight car products have begun to be fully upgraded. CRRC has developed a full range of freight car products including 70t-load general-purpose freight cars and 80t-load special-purpose freight cars. The vehicle axle weight is increased to 23t to 25t, and the bogies are K5-type (swinging type) and K6-type (lower cross support) bogies with a running speed of 120km / h.

[0003] The patent with the publication number CN118775464A and the patent name "An integrated braking device" discloses the following structure: an integrated braking device, the braking mode of the braking device is disc braking, including a brake disc, a friction plate, a brake caliper and a piston, the brake caliper is provided with a chamber, the piston is placed in the chamber, and one end extends out of the brake wheel cylinder and is fixedly connected to a friction plate, a friction plate is fixed on the brake caliper, the brake disc is placed between the two friction plates, brake fluid and / or high-pressure gas is introduced into the chamber, and the piston is driven to move toward the brake disc, after the friction plate fixed to the piston contacts the brake disc, the friction plate fixed to the brake caliper moves toward the brake disc and contacts the brake disc. In the braking process of the vehicle, the hydraulic friction brake and the pneumatic friction brake can work together, thereby shortening the response time of the vehicle braking and improving the braking efficiency of the vehicle. The present invention can have the function of parking brake of the vehicle, and can provide friction braking torque to realize parking brake of the vehicle when the vehicle is parked. Summary of the invention

[0004] The purpose of the present invention is to solve the above technical problems and provide an integrated braking device for a railway freight car.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] The present invention provides an integrated braking device for a railway freight car, comprising a brake valve, an empty and loaded car adjustment device, a relief valve, an emergency valve, an air cylinder and a mounting plate. The brake valve, the empty and loaded car adjustment device, the relief valve, the emergency valve and the air cylinder are all integrated and mounted on the mounting plate. The brake valve adopts a two-pressure indirect action mode, the action part of the brake valve adopts a diaphragm plate stop valve structure, and the empty and loaded car adjustment device adopts a balance fulcrum lever structure.

[0007] Specifically, since all components are integrated on the mounting plate, pipeline leakage is reduced, installation space is saved, and installation is convenient. The main valve of the brake valve adopts a two-pressure indirect action mode; the action part adopts a plunger structure. The empty and loaded vehicle adjustment device adopts a balance fulcrum lever structure, which has a large continuous adjustment range to meet the needs of empty and loaded vehicle pressure adjustment.

[0008] In one embodiment, the brake valve includes a control valve body, a control valve cover disposed on the control valve body, a control piston disposed in the control valve body, and a main valve diaphragm disposed in the control valve body.

[0009] In one embodiment, the control valve body and the control valve cover are both made of aluminum alloy, and the main valve diaphragm is manufactured by a cloth sandwich process.

[0010] Specifically, the brake valve action part adopts a diaphragm stop valve structure, the valve body and valve cover parts are made of aluminum alloy; the main valve diaphragm adopts a cloth sandwich process.

[0011] In one embodiment, the brake valve further comprises a main piston spring for controlling the piston action resistance of the brake valve.

[0012] In one embodiment, the relief valve includes a relief valve body, a relief valve cover arranged on the relief valve body, a relief piston arranged in the relief valve body, and a relief valve diaphragm arranged in the relief valve body; the relief valve also includes a balancing valve spring that controls the resistance of the relief piston movement of the relief valve.

[0013] Specifically, the performance of the brake valve and relief valve is completely controlled by processing methods and precision, completely eliminating the inertial quality problem of technical production and valve surface leakage.

[0014] In one embodiment, the empty and loaded vehicle adjustment device includes an empty and loaded vehicle adjustment averaging portion that adopts a different-diameter piston pressure balance method, and an integrated piston, the integrated piston includes an integrally formed large piston and a small piston, and the ratio of the piston area of ​​the large piston to the piston area of ​​the small piston surface is 2:1.

[0015] Specifically, the empty and loaded vehicle adjustment averaging part is integrated with the brake cylinder automatic adjustment part. The structure is compact, the air path is reduced, and the leakage fault points are reduced.

[0016] In one embodiment, the final output pressure of the empty and loaded vehicle adjustment averaging unit is equal to half of the sum of the pressure under the large piston and the pressure under the small piston.

[0017] Specifically, the empty and loaded vehicle adjustment device adopts a lever and fulcrum type adjustment structure, which can automatically adjust the brake cylinder pressure according to the vehicle load conditions and has a large output pressure adjustment range.

[0018] In one embodiment, the relief valve is a 120-valve aluminum alloy relief valve.

[0019] Specifically, the relief valve uses the mature 120-valve aluminum alloy relief valve. In order to facilitate shunting operations, save manpower and reduce air consumption, a semi-automatic relief valve is added. When using it, pull the handle for about 3 to 5 seconds, and when you hear the exhaust sound of the brake cylinder, you can release the handle.

[0020] In one embodiment, the emergency valve includes an aluminum alloy emergency valve body and a valve cover disposed on the aluminum alloy emergency valve body.

[0021] Specifically, the emergency valve uses an aluminum alloy emergency valve body and valve cover. Its performance parameters and installation interface are consistent with the existing 104 emergency valve. The function of the emergency valve is to speed up the exhaust of the brake pipe during emergency braking, which not only makes emergency braking more reliable, but also improves the stability of emergency braking and the emergency braking wave speed.

[0022] In one embodiment, the air cylinder is mounted directly on the integrated panel.

[0023] Specifically, installing the air cylinder directly on the integrated board reduces connecting pipes and also reduces the failure points of leakage.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. The present invention integrates the brake valve, empty and loaded vehicle adjustment device, relief valve, emergency valve and air cylinder on the mounting plate; since the present invention integrates various components on the mounting plate, pipeline leakage is reduced, installation space is saved and installation is convenient.

[0026] 2. The present invention integrates the brake valve, empty and loaded vehicle adjustment device, relief valve, emergency valve and air cylinder on the mounting plate, thereby reducing pipeline leakage, saving installation space and facilitating installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic diagram of the structure of the present invention;

[0029] Figure 2 yes Figure 1 A directional view of

[0030] Figure numbers: 1-brake valve, 2-relief valve, 3-empty and loaded vehicle adjustment device, 4-mounting plate, 5-pipe joint, 6-air cylinder, 7-emergency valve. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and technical effects of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] Example 1

[0036] like Figure 1 to Figure 2As shown, this embodiment provides an integrated braking device for a railway freight car of the present invention, comprising a brake valve 1, an empty and loaded car adjustment device 3, a relief valve 2, an emergency valve 7, an air cylinder 6 and a mounting plate 4. The brake valve 1, the empty and loaded car adjustment device 3, the relief valve 2, the emergency valve 7 and the air cylinder 6 are all integrated and mounted on the mounting plate 4. The brake valve 1 adopts a two-pressure indirect action mode, the action part of the brake valve 1 adopts a diaphragm stop valve structure, and the empty and loaded car adjustment device 3 adopts a balance fulcrum lever structure.

[0037] Specifically, since all components are integrated on the mounting plate 4, pipeline leakage is reduced, installation space is saved, and installation is convenient. The main valve of the brake valve 1 adopts a two-pressure indirect action mode; the action part adopts a plunger structure. The empty and loaded vehicle adjustment device 3 adopts a balance fulcrum lever structure, which has a large continuous adjustment range to meet the needs of empty and loaded vehicle pressure adjustment.

[0038] Example 2

[0039] like Figure 1 to Figure 2 As shown, this embodiment provides an integrated braking device for a railway freight car of the present invention, comprising a brake valve 1, an empty and loaded car adjustment device 3, a relief valve 2, an emergency valve 7, an air cylinder 6 and a mounting plate 4. The brake valve 1, the empty and loaded car adjustment device 3, the relief valve 2, the emergency valve 7 and the air cylinder 6 are all integrated and mounted on the mounting plate 4. The brake valve 1 adopts a two-pressure indirect action mode, the action part of the brake valve 1 adopts a diaphragm stop valve structure, and the empty and loaded car adjustment device 3 adopts a balance fulcrum lever structure.

[0040] The brake valve 1 comprises a control valve body, a control valve cover arranged on the control valve body, a control piston arranged in the control valve body, and a main valve diaphragm arranged in the control valve body.

[0041] The control valve body and the control valve cover are made of aluminum alloy, and the main valve diaphragm is made by cloth sandwich process.

[0042] Specifically, the brake valve 1 adopts a diaphragm stop valve structure in its action part, and the valve body and valve cover parts are made of aluminum alloy; the main valve diaphragm adopts a cloth sandwich process.

[0043] Example 3

[0044] This embodiment is further optimized on the basis of embodiment 2, specifically:

[0045] The brake valve 1 further comprises a main piston spring for controlling the piston action resistance of the brake valve 1 .

[0046] The relief valve 2 includes a relief valve 2 body, a relief valve 2 cover arranged on the relief valve 2 body, a relief piston arranged in the relief valve 2 body, and a relief valve 2 diaphragm arranged in the relief valve 2 body; the relief valve 2 also includes a balancing valve spring that controls the resistance of the relief piston of the relief valve 2.

[0047] Specifically, the performance of the brake valve 1 and the relief valve 2 is completely controlled by processing methods and precision, completely eliminating the inertial quality problem of technical production and valve surface leakage.

[0048] Example 4

[0049] This embodiment is further optimized on the basis of embodiment 3, specifically:

[0050] The empty and loaded vehicle adjustment device 3 comprises an empty and loaded vehicle adjustment averaging part adopting a different-diameter piston pressure balance method, and an integrated piston, wherein the integrated piston comprises an integrally formed large piston and a small piston, and the ratio of the piston area of ​​the large piston to the piston area of ​​the small piston surface is 2:1.

[0051] Specifically, the empty and loaded vehicle adjustment averaging part is integrated with the brake cylinder automatic adjustment part. The structure is compact, the air path is reduced, and the leakage fault points are reduced.

[0052] Example 5

[0053] This embodiment is further optimized on the basis of embodiment 3, specifically:

[0054] The final output pressure of the average part of the empty and loaded vehicle adjustment is equal to half of the sum of the pressure under the large piston and the pressure under the small piston.

[0055] Specifically, the empty and loaded vehicle adjustment device 3 adopts a lever and fulcrum type adjustment structure, which can automatically adjust the brake cylinder pressure according to the vehicle load condition and has a large output pressure adjustment range.

[0056] The relief valve 2 adopts 120 valve aluminum alloy relief valve 2.

[0057] Specifically, the relief valve 2 adopts the mature 120-valve aluminum alloy relief valve 2. In order to facilitate shunting operations, save manpower and reduce air consumption, a semi-automatic relief valve 2 is added. When using it, pull the handle for about 3 to 5 seconds, and when you hear the exhaust sound of the brake cylinder, you can release the handle.

[0058] The emergency valve 7 comprises an aluminum alloy emergency valve 7 body and a valve cover arranged on the aluminum alloy emergency valve 7 body.

[0059] Specifically, the emergency valve 7 uses an aluminum alloy emergency valve 7 body and valve cover. Its performance parameters and installation interface are consistent with the existing 104 emergency valve 7. The function of the emergency valve 7 is to speed up the exhaust of the brake pipe during emergency braking, which not only makes the emergency braking more reliable, but also improves the stability of the emergency braking action and the emergency braking wave speed.

[0060] The air cylinder 6 is directly mounted on the integrated board.

[0061] Specifically, the air cylinder 6 is directly installed on the integrated board, which reduces the number of connecting pipes and the number of leakage failure points.

Claims

1. A railway freight car integrated braking device, characterized in that: The invention comprises a brake valve (1), an empty and loaded vehicle adjustment device (3), a relief valve (2), an emergency valve (7), an air cylinder (6) and a mounting plate (4); the brake valve (1), the empty and loaded vehicle adjustment device (3), the relief valve (2), the emergency valve (7) and the air cylinder (6) are all integrated and mounted on the mounting plate (4); the brake valve (1) adopts a two-pressure indirect action mode; the action part of the brake valve (1) adopts a diaphragm stop valve structure; and the empty and loaded vehicle adjustment device (3) adopts a balance fulcrum lever structure.

2. The integrated braking device for railway freight cars according to claim 1, characterized in that: The brake valve (1) comprises a control valve body, a control valve cover arranged on the control valve body, a control piston arranged in the control valve body, and a main valve diaphragm arranged in the control valve body.

3. The integrated braking device for railway freight cars according to claim 2, characterized in that: The control valve body and the control valve cover are both made of aluminum alloy, and the main valve diaphragm is manufactured by a cloth sandwich process.

4. The integrated braking device for railway freight cars according to claim 2, characterized in that: The brake valve (1) also includes a main piston spring for controlling the piston action resistance of the control brake valve (1).

5. The integrated braking device for railway freight cars according to claim 1, characterized in that: The relief valve (2) comprises a relief valve (2) body, a relief valve (2) cover arranged on the relief valve (2) body, a relief piston arranged in the relief valve (2) body, and a relief valve (2) diaphragm arranged in the relief valve (2) body; the relief valve (2) also comprises a balancing valve spring for controlling the action resistance of the relief piston of the relief valve (2).

6. The integrated braking device for railway freight cars according to claim 1, characterized in that: The empty and loaded vehicle adjustment device (3) comprises an empty and loaded vehicle adjustment averaging portion using a different-diameter piston pressure balance method, and an integrated piston, wherein the integrated piston comprises an integrally formed large piston and a small piston, and the ratio of the piston area of ​​the large piston to the piston area of ​​the small piston surface is 2:

1.

7. The integrated braking device for railway freight cars according to claim 6, characterized in that: The final output pressure of the empty and loaded vehicle adjusting averaging section is equal to half of the sum of the pressure below the large piston and the pressure below the small piston.

8. The integrated braking device for railway freight cars according to claim 1, characterized in that: The relief valve (2) adopts a 120 valve aluminum alloy relief valve (2).

9. The integrated braking device for railway freight cars according to claim 1, characterized in that: The emergency valve (7) comprises an aluminum alloy emergency valve (7) body and a valve cover arranged on the aluminum alloy emergency valve (7) body.

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