Multi-axle flat car air brake system

Abstract

The embodiment of the application provides a kind of multi-axis flatcar air brake system, comprising: multiple unit brakes, flatcar total wind pipe, flatcar train pipe and parking control subsystem.Unit brake has brake state, release state and parking state.Parking control subsystem includes parking control pipeline and parking air cylinder assembly, parking control pipeline is connected respectively flatcar total wind pipe and each unit brake parking interface, parking air cylinder assembly is set on parking control pipeline, when parking air cylinder assembly interruption provides parking release air for unit brake, unit brake is in parking state.Brake control subsystem includes brake pipeline and the air path control assembly set on brake pipeline, brake pipeline is connected respectively flatcar train pipe and each unit brake brake interface, air path control assembly is used to control to provide air pressure to unit brake or pass through the passage of unit brake to exhaust air to atmosphere, to adjust unit brake to brake state or release state.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering machinery, in particular to a multi-axle flat car air brake system. BACKGROUND

[0002] Multi-axle flat cars are widely used in railway freight transportation, and the brake system usually adopts a combination of 120 type air brake valves and freight car brake beams. The brake system includes a set of empty and loaded car adjusting devices, which adjusts the brake cylinder pressure through the weight of the freight. The basic brake device adopts a lever type brake beam structure, which has low transmission efficiency. In the process of loading small-diameter bogies, there are problems such as too small installation position of the basic brake beam and interference. The existing parking mechanism of the multi-axle flat car usually needs to be manually operated to realize parking, which cannot automatically park and increases the operation difficulty. SUMMARY

[0003] The embodiment of the present application provides a multi-axle flat car air brake system, which adopts a unit brake for basic braking, occupies small space, simplifies the structure, and realizes automatic parking and simplifies the operation.

[0004] The present application provides the following technical solutions:

[0005] A multi-axle flat car air brake system, comprising:

[0006] A plurality of unit brakes, the unit brakes having a braking state, a releasing state and a parking state;

[0007] A flat car main air pipe;

[0008] A flat car train pipe;

[0009] A parking control subsystem, the parking control subsystem comprising a parking control pipeline and a parking air cylinder assembly, the parking control pipeline being connected to the flat car main air pipe and a parking interface of each unit brake, respectively, the parking air cylinder assembly being arranged on the parking control pipeline, the parking air cylinder assembly comprising a parking air cylinder body, and a pipe section connecting the parking air cylinder body and the flat car main air pipe on the parking control pipeline being a complete pipe body structure; when the flat car is running, the flat car main air pipe is in an inflated state, and the parking air cylinder assembly provides parking and releasing air to the unit brakes; when the flat car stops running, the flat car main air pipe is deflated, and the parking air cylinder assembly is deflated, thereby interrupting the provision of parking and releasing air to the unit brakes, and the unit brakes are automatically switched to the parking state.

[0010] The brake control subsystem comprises a brake pipe and an air path control assembly arranged on the brake pipe, the brake pipe is connected with the flat car train pipe and the brake interface of each unit brake respectively, and the air path control assembly is used for controlling the air pressure provided to the unit brake or the air path of the unit brake to the atmosphere to adjust the unit brake to the brake state or the relief state.

[0011] Optionally, the air path control assembly comprises a 103E air brake valve, an 11L working air cylinder and a secondary air cylinder.

[0012] The 103E air brake valve, the 11L working air cylinder and the secondary air cylinder are arranged on the brake pipe, and the 103E air brake valve is used for controlling the on-off of the air path of the secondary air cylinder and the unit brake to control the state of the unit brake.

[0013] When the flat car train pipe is in the inflation state, the 103E air brake valve disconnects the air path of the secondary air cylinder and the unit brake, so that the unit brake is in the relief state.

[0014] When the flat car train pipe is in the deflation state, the 103E air brake valve connects the air path of the secondary air cylinder and the unit brake, so that the unit brake is in the brake state.

[0015] Optionally, the brake control subsystem comprises a combined dust collector.

[0016] The combined dust collector is arranged on the brake pipe, and the combined dust collector is located between the flat car train pipe and the 103E air brake valve.

[0017] Optionally, the brake control subsystem comprises a first exhaust cutoff valve.

[0018] The first exhaust cutoff valve is arranged on the brake pipe and located between the 103E air brake valve and each unit brake.

[0019] When the first exhaust cutoff valve is in the exhaust state, each unit brake is switched to the relief state.

[0020] Optionally, the multi-axle flat car air brake system comprises an emergency air release valve.

[0021] The emergency air release valve is arranged on the flat car train pipe.

[0022] Optionally, the multi-axle flat car air brake system comprises a total air hose connector, and the total air hose connector is used for connecting the traction total air pipe on the tractor and the flat car total air pipe on the flat car.

[0023] Optionally, the multi-axle flatcar air brake system comprises a first angle cock, which is arranged between the total air hose connector and the flatcar total air pipe, and is used for conducting or cutting off the flatcar total air pipe.

[0024] Optionally, the multi-axle flatcar air brake system comprises a plug, which is detachably connected to the end port of the total air hose connector, and is used for plugging or conducting the end port.

[0025] Optionally, the multi-axle flatcar air brake system comprises a brake hose assembly, which is used for connecting the traction train pipe on the traction car and the flatcar train pipe on the flatcar.

[0026] Optionally, the multi-axle flatcar air brake system comprises a second angle cock, which is arranged between the brake hose assembly and the flatcar train pipe, and is used for conducting or cutting off the flatcar train pipe.

[0027] The embodiments of the present application have the following technical effects due to the adoption of the above technical solutions:

[0028] When heavy cargo transportation needs to be stopped and braked, the multi-axle flatcar air brake system of the present application can provide effective braking force, and ensure that the multi-axle flatcar can be safely stopped and braked within a specified distance, and can be parked on a specified slope. The multi-axle flatcar brake system uses a 103E type air brake valve and a unit brake, and can indirectly control the locomotive unit brake to implement braking or release action according to the pressure change of the train pipe, so as to obtain effective braking force.

[0029] When the flatcar is normally running, the flatcar total air pipe is in an inflated state, the parking air cylinder assembly provides parking release air to the unit brake, and the unit brake will not brake the wheel. When the flatcar stops running, the flatcar total air pipe deflates, the parking air cylinder assembly deflates, the provision of parking release air to the unit brake is interrupted, the unit brake automatically switches to the parking state, and manual operation is not needed, which is convenient for operation.

[0030] The parking air cylinder assembly of the present application comprises a parking air cylinder body, the pipe section connecting the parking air cylinder body and the flatcar total air pipe on the parking control pipeline is a complete pipe body structure, and no other elements are arranged on the pipe section between the parking air cylinder body and the flatcar total air pipe, so that the structure is simplified. BRIEF DESCRIPTION OF DRAWINGS

[0031] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0032] Figure 1A schematic diagram of a multi-axle flatcar air brake system provided by an embodiment of the present application is shown.

[0033] Figure 2 A partial structure schematic diagram of a flatcar is shown.

[0034] Reference signs: 1, plug; 2, brake hose assembly; 3, second angle cock; 4, first angle cock; 5, flatcar train pipe; 6, total wind hose connector; 7, flatcar total wind pipe; 8, emergency air release valve; 9, combined dust collector; 10, working air cylinder; 11, 70L auxiliary air cylinder; 12, 103E air brake valve; 13, parking air cylinder body; 14, pressure regulating valve; 15, second exhaust cutoff valve; 16, unit brake; 17, first exhaust cutoff valve; 18, bogie. DETAILED DESCRIPTION

[0035] In order to make the technical solutions and advantages in the embodiments of the present application clearer, the exemplary embodiments of the present application are further described in detail below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0036] Referring to Figure 1 and Figure 2 , the present application provides a multi-axle flatcar air brake system, which comprises a plurality of unit brakes 16, a flatcar total wind pipe 7, a flatcar train pipe 5 and a parking control subsystem. The unit brake 16 has a braking state, a releasing state and a parking state. The parking control subsystem comprises a parking control pipeline and a parking air cylinder assembly. The parking control pipeline is connected to the flatcar total wind pipe 7 and the parking interface of each unit brake 16, respectively. The parking air cylinder assembly is arranged on the parking control pipeline. When the parking air cylinder assembly interrupts to provide parking releasing air to the unit brake 16, the unit brake 16 is in the parking state. The brake control subsystem comprises a brake pipeline and an air path control assembly arranged on the brake pipeline. The brake pipeline is connected to the flatcar train pipe 5 and the brake interface of each unit brake 16, respectively. The air path control assembly is used to control the air pressure provided to the unit brake 16 or the path of the air exhaust from the unit brake 16 to the atmosphere, so as to adjust the unit brake 16 to the braking state or the releasing state.

[0037] When the flatcar is running normally, the flatcar total wind pipe 7 is in the inflation state, the parking air cylinder assembly provides parking releasing air to the unit brake 16, and the unit brake 16 does not brake the wheel. When the flatcar stops running, the flatcar total wind pipe 7 is deflated, the parking air cylinder assembly is deflated, the parking releasing air provided to the unit brake 16 is interrupted, and the unit brake 16 automatically switches to the parking state without the need for manual operation, which is convenient for operation.

[0038] The parking air cylinder assembly comprises a parking air cylinder body, and a pipe segment connecting the parking air cylinder body and the flat car main air pipe on the parking control pipeline is a complete pipe body structure, and no other elements are arranged on the pipe segment between the parking air cylinder body and the flat car main air pipe, so that the structure is simplified.

[0039] The parking air cylinder assembly comprises a parking air cylinder body 13, a pressure regulating valve 14 and a second exhaust cutoff valve 15. The parking air cylinder body 13, the pressure regulating valve 14 and the second exhaust cutoff valve 15 are sequentially arranged on the parking control pipeline. The pressure regulating valve 14 is used for adjusting the pressure of the parking air cylinder body 13 to a rated pressure, lifting the parking spring of the unit brake 16, and realizing parking relief. The second exhaust cutoff valve 15 can cut off the parking control pipeline or exhaust the parking air of the unit brake 16.

[0040] In the application, the unit brake 16 is adopted for the foundation brake, the space occupied is small, and the structure is simplified, and meanwhile, the application realizes automatic parking and simplifies the operation.

[0041] When heavy cargo transportation needs to be parked and braked, the multi-axle flat car air brake system of the application can provide effective braking force, and can ensure that the multi-axle flat car can be safely parked and braked within a specified distance, and can realize parking on a specified slope.

[0042] Optionally, as shown in Figure 1 and Figure 2 The air path control assembly comprises a 103E air brake valve 12, an 11L working air cylinder 10 and a secondary air cylinder 11. The 103E air brake valve 12, the 11L working air cylinder 10 and the secondary air cylinder 11 are all arranged on the brake pipeline, the 103E air brake valve 12 is used for controlling the on-off of the air path of the secondary air cylinder 11 and the unit brake 16, so as to control the state of adjusting the unit brake 16. When the flat car train pipe 5 is in an inflated state, the 103E air brake valve 12 disconnects the air path of the secondary air cylinder 11 and the unit brake 16, and opens the air exhaust path of the unit brake to the atmosphere, so that the unit brake 16 is in a relief state. When the flat car train pipe 5 is in a deflated state, the 103E air brake valve 12 connects the air path of the secondary air cylinder 11 and the unit brake 16, so that the unit brake 16 is in a braking state.

[0043] 11L working air cylinder 10 is a working air cylinder 10 matched with 103E air brake valve 12. The auxiliary air cylinder 11 can be a 70L auxiliary air cylinder 11, which is a pressure air container, and provides air pressure for the unit brake 16. The 103E air brake valve 12 is the main control valve of the brake control subsystem, which can realize the charging and relief of the unit brake 16. It should be noted that the 103E air brake valve, working air cylinder and auxiliary air cylinder provided in the embodiments of the present application are all prior art, and the connection relationship of the three is also prior art. The specific principle thereof will not be described herein.

[0044] The unit brake 16 is a brake execution device of the brake system, which implements braking by pressing the brake shoe against the wheel set through the air pressure of the auxiliary air cylinder 11. It should be noted that the unit brake 16 is a mature technology in the art, and the working principle thereof will not be described herein.

[0045] The multi-axle flat car brake system of the present application uses the 103E air brake valve 12 and the unit brake 16, which can indirectly control the flat car unit brake 16 to implement braking or relief action according to the pressure change of the train pipe, so as to obtain effective braking force. Compared with the lever type brake beam structure of the basic brake device, which leads to low transmission efficiency, and the problems of small installation position of the basic brake beam and interference in the process of loading the small-diameter bogie 18, the cooperation of the 103E air brake valve 12 and the unit brake 16 simplifies the structure, and is more suitable for application in the multi-axle small-diameter flat car brake system to realize the transportation demand of multi-axle heavy load and small space assembly of the bogie 18.

[0046] In a possible implementation, the brake control subsystem comprises a combined dust collector 9, which is arranged on the brake pipeline and located between the flat car train pipe 5 and the 103E air brake valve 12. The combined dust collector 9 is used to filter air impurities entering the 103E brake valve from the flat car train pipe 5.

[0047] In a possible implementation, the brake control subsystem comprises a first exhaust cutoff valve 17, which is arranged on the brake pipeline and located between the 103E air brake valve 12 and each unit brake 16. When the first exhaust cutoff valve 17 is in the exhaust state, each unit brake 16 is switched to the relief state. In this embodiment, the first exhaust cutoff valve 17 can cut off the brake pipeline or exhaust the brake air in the unit brake 16 to the atmosphere.

[0048] In a possible implementation, the multi-axle flatcar air brake system includes an emergency blow-off valve 8 arranged in the flatcar train pipe 5. The emergency blow-off valve 8 is used for manual control and is installed on the flatcar side frame. In case of an emergency during vehicle driving, the train pipe pressure can be exhausted through the emergency blow-off valve 8 to achieve emergency braking.

[0049] In a possible implementation, the multi-axle flatcar air brake system includes a total air hose connector 6 for connecting the traction total air pipe on the traction vehicle and the flatcar total air pipe 7 on the flatcar.

[0050] Optionally, the multi-axle flatcar air brake system includes a first angle cock 4 arranged between the total air hose connector 6 and the flatcar total air pipe 7, which is used to open or cut off the flatcar total air pipe 7.

[0051] The multi-axle flatcar air brake system includes a plug 1 detachably connected to the end port of the total air hose connector 6 for plugging or opening the end port. Dust is prevented from entering the flatcar total air pipe 7.

[0052] Optionally, the multi-axle flatcar air brake system includes a brake hose assembly 2 for connecting the traction train pipe on the traction vehicle and the flatcar train pipe 5 on the flatcar. The multi-axle flatcar air brake system includes a second angle cock 3 arranged between the brake hose assembly 2 and the flatcar train pipe 5, which is used to open or cut off the flatcar train pipe 5.

[0053] The multi-axle flatcar air brake system is arranged on a multi-axle flatcar which itself does not have power and controls the braking and release of the flatcar by connecting the traction total air pipe and the traction train pipe on the traction vehicle. The flatcar train pipe 5 and the flatcar total air pipe 7 are provided with air pressure by the traction vehicle, so that the parking air cylinder 13, the auxiliary air cylinder 11 and the working air cylinder 10 reach the rated air pressure. The parking air cylinder 13 adjusts the pressure to the rated air pressure of the unit brake 16 through the pressure regulating valve 14, opens the unit brake 16 against the spring, and makes the whole vehicle in the parking release state. The train pipe is exhausted by the automatic brake valve of the traction vehicle to achieve braking of the whole vehicle.

[0054] The multi-axle flatcar fastens the structural modules and key components through bolts on corresponding mounting seats, and the mounting seats are welded on the main vehicle frame and the bogie 18. The multi-axle flatcar is relatively long, and multiple bogies 18 can be arranged. Multiple sets of multi-axle flatcar air brake systems are used, and one flatcar train pipe 5 and one flatcar total air pipe 7 passing through the whole vehicle are used to supply air for the brake system.

[0055] While the preferred embodiments of the application have been described, additional variations and modifications can be made to these embodiments by those skilled in the art once they have the benefit of the present disclosure without departing from the spirit and scope of the application. Accordingly, it is intended that such additions and modifications be included within the scope of the application. It is the following claims, including any amendments thereto, which define the scope of the application.

[0056] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A multi-axle flatcar air brake system, characterized by, The utility model relates to a kind of flatcar brake system, including: Multiple unit brakes, the unit brake has brake state, release state and parking state; Flatcar main air pipe; Flatcar train pipe; Parking control subsystem, the parking control subsystem includes parking control pipeline and parking air cylinder assembly, the parking control pipeline is connected respectively with the flatcar main air pipe and the parking interface of each unit brake, the parking air cylinder assembly is arranged on the parking control pipeline, the parking air cylinder assembly includes parking air cylinder body, and the pipe section that the parking control pipeline is connected with the parking air cylinder body and the flatcar main air pipe is complete pipe body structure;When flatcar runs, flatcar main air pipe is aerated state, and parking air cylinder assembly provides parking release air to unit brake, when flatcar stops running, flatcar main air pipe is vented, then parking air cylinder assembly is vented, and parking release air to unit brake is interrupted, and unit brake is automatically switched to parking state; Brake control subsystem, the brake control subsystem includes brake pipeline and air path control assembly arranged on the brake pipeline, the brake pipeline is connected respectively with the flatcar train pipe and the brake interface of each unit brake, and the air path control assembly is used to control the passage that unit brake is provided with air pressure or exhaust air to atmosphere to adjust unit brake to brake state or release state; Emergency air release valve;The emergency air release valve is arranged on the flatcar train pipe; The air path control assembly includes 103E air brake valve, 11L working air cylinder and auxiliary air cylinder; The 103E air brake valve, 11L working air cylinder and auxiliary air cylinder are all arranged on the brake pipeline, and the 103E air brake valve is used to control the on-off of the air path of auxiliary air cylinder and unit brake, to control the state of unit brake; When the flatcar train pipe is in aerated state, the 103E air brake valve disconnects the air path of auxiliary air cylinder and unit brake, so that unit brake is in release state; When the flatcar train pipe is in vented state, the 103E air brake valve leads through the air path of auxiliary air cylinder and unit brake, so that unit brake is in brake state.

2. The multi-axle railcar air brake system of claim 1, wherein, The brake control subsystem includes combined dust collector; The combined dust collector is arranged on the brake pipeline, and the combined dust collector is located between the flatcar train pipe and the 103E air brake valve.

3. The multi-axle car air brake system of claim 2, wherein, The brake control subsystem includes first exhaust cutoff valve; The first exhaust cutoff valve is arranged on the brake pipeline, and is located between the 103E air brake valve and each unit brake; When the first exhaust cutoff valve is in exhaust state, each unit brake switches to release state.

4. The multi-axle railcar air brake system according to any one of claims 1-3, wherein, It includes total wind hose connector, the total wind hose connector is used to connect the traction main air pipe on tractor and the flatcar main air pipe on flatcar.

5. The multi-axle car air brake system of claim 4 wherein, It includes first angle cock, the first angle cock is arranged between total wind hose connector and the flatcar main air pipe, and the first angle cock is used to lead through or cut off the flatcar main air pipe.

6. The multi-axle car air brake system of claim 5 wherein, It includes plug, the plug is detachably connected to the end port of the total wind hose connector, for plugging or leading through the end port.

7. The multi-axle railcar air brake system of any one of claims 1-3, wherein, The brake hose assembly is used to connect the tractor train pipe on the tractor and the flatcar train pipe on the flatcar.

8. The multi-axle car air brake system of claim 7 wherein, The second angle cock is arranged between the brake hose assembly and the flatcar train pipe, and is used to open or cut off the flatcar train pipe.

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