阅读说明：本技术 轨道车辆及其安全警示装置 (Railway vehicle and safety warning device thereof ) 是由 朱立强 吉振山 李化明 张新永 张义文 王东星 白春新 李童生 王振宏 张冬冬 于 2019-11-21 设计创作，主要内容包括：本申请实施例提供一种轨道车辆及其安全警示装置,涉及轨道车辆技术,用于克服现有警示装置中电磁阀孔径较大导致难以实现高频次鸣笛的问题。其中,安全警示装置,包括：风笛控制开关；风缸,用于与轨道车辆的总风管连接；先导电磁阀,先导电磁阀与风笛控制开关电连接,且先导电磁阀的电磁阀进气口与风缸的出气口连接；风笛气动阀,风笛气动阀具有第一进气口及第二进气口,第一进气口与先导电磁阀的出气口连接,第二进气口与风缸的出气口连接；风笛模块,风笛模块的进气口与风笛气动阀的出气口连接；其中,风笛控制开关用于控制先导电磁阀驱动风笛气动阀打开,使得先导电磁阀及风缸中的压缩气体能够经风笛气动阀进入风笛模块。(The embodiment of the application provides a rail vehicle and a safety warning device thereof, relates to the rail vehicle technology, and is used for solving the problem that high-frequency secondary whistle is difficult to realize due to the large aperture of an electromagnetic valve in the existing warning device. Wherein, safety warning device includes: a whistle control switch; the air cylinder is used for being connected with a main air pipe of the railway vehicle; the pilot electromagnetic valve is electrically connected with the whistle control switch, and an electromagnetic valve air inlet of the pilot electromagnetic valve is connected with an air outlet of the air cylinder; the air whistle pneumatic valve is provided with a first air inlet and a second air inlet, the first air inlet is connected with the air outlet of the pilot electromagnetic valve, and the second air inlet is connected with the air outlet of the air cylinder; the air inlet of the air whistle module is connected with the air outlet of the air whistle pneumatic valve; wherein, the whistle control switch is used for controlling the pilot solenoid valve drive whistle pneumatic valve to open for compressed gas in pilot solenoid valve and the reservoir can get into the whistle module through the whistle pneumatic valve.)

1. A safety warning device for a rail vehicle, comprising:

a whistle control switch;

the air cylinder is used for being connected with a main air pipe of the railway vehicle;

the pilot electromagnetic valve is electrically connected with the air whistle control switch, and an electromagnetic valve air inlet of the pilot electromagnetic valve is connected with an air outlet of the air cylinder;

the air whistle pneumatic valve is provided with a first air inlet and a second air inlet, the first air inlet is connected with the air outlet of the pilot electromagnetic valve, and the second air inlet is connected with the air outlet of the air cylinder;

the air inlet of the air whistle module is connected with the air outlet of the air whistle pneumatic valve;

the whistle control switch is used for controlling the pilot electromagnetic valve to drive the whistle pneumatic valve to be opened, so that compressed gas in the pilot electromagnetic valve and the air cylinder can enter the whistle module through the whistle pneumatic valve.

2. The safety warning device of claim 1, wherein the siren module comprises a treble sub-module and a bass sub-module; the pilot electromagnetic valve comprises a bass electromagnetic oven and a treble electromagnetic valve; the whistle pneumatic valve comprises a bass pneumatic valve and a treble pneumatic valve;

the high pitch electromagnetic valve and the low pitch electromagnetic valve are respectively connected with the air cylinder; the bass electromagnetic valve and the treble electromagnetic valve are respectively and electrically connected with the whistle control switch;

the bass pneumatic valve and the treble pneumatic valve are respectively connected with the bass electromagnetic valve and the treble electromagnetic valve; the bass pneumatic valve and the treble pneumatic valve are respectively connected with the treble sub-module and the bass sub-module;

the whistle control switch is used for controlling the high pitch electromagnetic valve to drive the high pitch pneumatic valve to be opened, so that compressed gas in the high pitch electromagnetic valve and the air cylinder can enter the high pitch sub-module through the high pitch pneumatic valve; or the whistle control switch is used for controlling the bass solenoid valve to drive the bass solenoid valve to be opened, so that the compressed gas in the bass solenoid valve and the air cylinder can enter the bass submodule through the bass pneumatic valve.

3. The safety warning device of claim 2, further comprising a two-way check valve connected to an air inlet of the bass sub-module, and connected to the bass and treble pneumatic valves, respectively; the bidirectional check valve is also electrically connected with the whistle control switch;

wherein the whistle control switch is used for controlling the two-way check valve to connect the bass pneumatic valve with a bass chamber in the whistle module so that the bass sub-module can whistle; or, the whistle control switch is used for control two-way check valve will the high pitch pneumatic valve with high pitch cavity in the whistle module is connected, makes the bass submodule piece can whistle with the high pitch submodule piece jointly.

4. The safety warning device of claim 2, wherein the whistle module comprises a whistle base, and a sounding chamber is arranged in the whistle base; a partition board is arranged in the sounding cavity to divide the sounding cavity into a bass cavity and a treble cavity; the bass sub-module is arranged in the bass chamber; the high-pitch sub-module is arranged in the high-pitch cavity.

5. The safety warning device of claim 2, wherein the siren control switch comprises a toggle switch; the toggle switch is used for controlling the high pitch electromagnetic valve to be electrified when being switched from a middle position to a high pitch position, so that compressed gas in the air cylinder can enter the high pitch pneumatic valve through the high pitch electromagnetic valve; the toggle switch is used for controlling the bass solenoid valve to be electrified when the toggle switch is switched from a middle position to a bass position, so that compressed air in the air cylinder can enter the bass pneumatic valve through the bass solenoid valve.

6. The safety warning device of any one of claims 1-5, further comprising a shutoff plug disposed between the reservoir and the pilot solenoid valve; the cut-off cock is used for selectively communicating the air cylinder with a pilot electromagnetic valve.

7. The safety warning device of any one of claims 1-5, wherein the pilot solenoid valve and the whistle solenoid valve are each provided with an exhaust port.

8. The safety warning device of any one of claims 1-5, further comprising a warning signal light and a signal light control module; the signal lamp is arranged on the head car of the rail car; the signal lamp control module is electrically connected with the pilot electromagnetic valve or the air whistle control switch; the signal lamp control module is used for controlling the warning signal lamp to be turned on and flash when the whistle module whistles.

9. The safety warning device of claim 8, further comprising a disconnector; the isolating switch is used for selectively and electrically connecting the signal lamp control module with the pilot electromagnetic valve when the signal lamp control module can be electrically connected with the pilot electromagnetic valve; or, the isolating switch is used for selectively and electrically connecting the signal lamp control module with the whistle control switch when the signal lamp control module can be electrically connected with the whistle control switch.

10. A rail vehicle, comprising: a vehicle body and a safety warning device as claimed in any one of claims 1 to 9; the safety warning device is mounted to the vehicle body.

Technical Field

The application relates to the railway vehicle technology, especially relates to a railway vehicle and safety warning device thereof.

Background

The rail vehicle is an important traffic tie connecting cities, is gradually a main vehicle in the cities, and is also a main carrier for realizing goods transportation. Because the running of the rail vehicle can bring potential safety hazards to the positions near the line, the rail vehicle is provided with a whistle warning device in order to enable pedestrians and vehicles near the line to be capable of avoiding in time.

In the related art, as shown in fig. 1, the air whistle warning device includes a high-pitched air whistle 011 and a low-pitched air whistle 021 which are disposed on the rail vehicle, the high-pitched air whistle 011 and the low-pitched air whistle 021 are respectively mounted on the vehicle body, and the high-pitched air whistle 011 and the low-pitched air whistle 021 are respectively connected with the reservoir 03 through a high-pitched electromagnetic valve 012 and a low-pitched electromagnetic valve 022; the air whistle control switch 04 in the driver's cabin of driver accessible controls high pitch solenoid valve 012 or bass solenoid valve 022 and gets electric, and high pitch solenoid valve 012 gets electric back and is arranged in leading high pitch air whistle 011 to make high pitch air whistle 011 sound to be used for leading the compressed gas in the air cylinder 03 to bass air whistle 021 after getting electric, and bass solenoid valve 022 gets electric back and is used for leading the bass air whistle 021 to make bass air whistle 021 sound.

In the related art, in order to ensure that the high pitch whistle and the low pitch whistle can normally whistle, the apertures of the high pitch electromagnetic valve and the low pitch electromagnetic valve are arranged to be larger; however, when the diameter of the solenoid valve is large, the response speed of the solenoid valve is slow, and it is difficult to realize high-frequency whistling.

Disclosure of Invention

The embodiment of the application provides a rail vehicle and a safety warning device thereof, which are used for solving the problem that high-frequency whistle is difficult to realize due to the large aperture of an electromagnetic valve in the conventional warning device.

An embodiment of a first aspect of the present application provides a safety warning device for a rail vehicle, including:

a whistle control switch;

the air cylinder is used for being connected with a main air pipe of the railway vehicle;

the pilot electromagnetic valve is electrically connected with the air whistle control switch, and an electromagnetic valve air inlet of the pilot electromagnetic valve is connected with an air outlet of the air cylinder;

the air whistle pneumatic valve is provided with a first air inlet and a second air inlet, the first air inlet is connected with the air outlet of the pilot electromagnetic valve, and the second air inlet is connected with the air outlet of the air cylinder;

the air inlet of the air whistle module is connected with the air outlet of the air whistle pneumatic valve;

the whistle control switch is used for controlling the pilot electromagnetic valve to drive the whistle pneumatic valve to be opened, so that compressed gas in the pilot electromagnetic valve and the air cylinder can enter the whistle module through the whistle pneumatic valve.

In one possible implementation, the wind whistle module includes a high tone sub-module and a low tone sub-module; the pilot electromagnetic valve comprises a bass electromagnetic oven and a treble electromagnetic valve; the whistle pneumatic valve comprises a bass pneumatic valve and a treble pneumatic valve; the high pitch electromagnetic valve and the low pitch electromagnetic valve are respectively connected with the air cylinder; the bass electromagnetic valve and the treble electromagnetic valve are respectively and electrically connected with the whistle control switch; the bass pneumatic valve and the treble pneumatic valve are respectively connected with the bass electromagnetic valve and the treble electromagnetic valve; and the bass pneumatic valve and the treble pneumatic valve are respectively connected with the treble submodule and the bass submodule.

The whistle control switch is used for controlling the high pitch electromagnetic valve to drive the high pitch pneumatic valve to be opened, so that compressed gas in the high pitch electromagnetic valve and the air cylinder can enter the high pitch sub-module through the high pitch pneumatic valve; or the whistle control switch is used for controlling the bass solenoid valve to drive the bass solenoid valve to be opened, so that the compressed gas in the bass solenoid valve and the air cylinder can enter the bass submodule through the bass pneumatic valve.

In one possible implementation manner, the safety warning device further comprises a two-way check valve, the two-way check valve is connected to an air inlet of the bass sub-module, and the two-way check valve is respectively connected with the bass pneumatic valve and the treble pneumatic valve; the bidirectional check valve is also electrically connected with the whistle control switch; wherein the whistle control switch is used for controlling the two-way check valve to connect the bass pneumatic valve with a bass chamber in the whistle module so that the bass sub-module can whistle; or, the whistle control switch is used for control two-way check valve will the high pitch pneumatic valve with high pitch cavity in the whistle module is connected, makes the bass submodule piece can whistle with the high pitch submodule piece jointly.

In one possible implementation manner, the whistle module comprises a whistle seat, and a sounding cavity is arranged in the whistle seat; a partition board is arranged in the sounding cavity to divide the sounding cavity into a bass cavity and a treble cavity; the bass sub-module is arranged in the bass chamber; the high-pitch sub-module is arranged in the high-pitch cavity.

In one possible implementation, the whistle control switch includes a toggle switch; the toggle switch is used for controlling the high pitch electromagnetic valve to be electrified when being switched from a middle position to a high pitch position, so that compressed gas in the air cylinder can enter the high pitch pneumatic valve through the high pitch electromagnetic valve; the toggle switch is used for controlling the bass solenoid valve to be electrified when the toggle switch is switched from a middle position to a bass position, so that compressed air in the air cylinder can enter the bass pneumatic valve through the bass solenoid valve.

In one possible implementation manner, the safety warning device further comprises a cut-off cock, and the cut-off cock is arranged between the air cylinder and the pilot electromagnetic valve; the cut-off cock is used for selectively communicating the air cylinder with a pilot electromagnetic valve.

In one possible implementation, the pilot solenoid valve and the whistle solenoid valve are each provided with an exhaust port.

In one possible implementation manner, the safety warning device further comprises a warning signal lamp and a signal lamp control module; the signal lamp is arranged on the head car of the rail car; the signal lamp control module is electrically connected with the pilot electromagnetic valve or the air whistle control switch; the signal lamp control module is used for controlling the warning signal lamp to be turned on and flash when the whistle module whistles.

In one possible implementation manner, the safety warning device further includes a disconnecting switch; the isolating switch is used for selectively and electrically connecting the signal lamp control module with the pilot electromagnetic valve when the signal lamp control module can be electrically connected with the pilot electromagnetic valve; or, the isolating switch is used for selectively and electrically connecting the signal lamp control module with the whistle control switch when the signal lamp control module can be electrically connected with the whistle control switch.

An embodiment of a second aspect of the present application provides a rail vehicle, including: the vehicle body and the safety warning device as described in any one of the preceding items; the safety warning device is mounted to the vehicle body.

According to the railway vehicle and the safety warning device thereof, the whistle pneumatic valve is arranged, the whistle pneumatic valve is respectively connected with the pilot solenoid valve and the air cylinder, and the whistle pneumatic valve is connected with the whistle module; so, when control whistle module whistle, the compressed gas drive whistle pneumatic valve that the accessible got into the pilot solenoid valve is opened, make the compressed gas that gets into the pilot solenoid valve can get into the whistle module through the whistle pneumatic valve, and partial compressed gas in the reservoir can directly get into the whistle module through the whistle pneumatic valve, thereby not only do benefit to and guarantee to carry sufficient compressed gas to the whistle module, still reduced the requirement to the aperture of pilot's motorised valve, do benefit to the reaction rate that improves the pilot solenoid valve, and then do benefit to the frequency that improves the whistle module whistle.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural view of a siren warning device in the related art;

FIG. 2 is a schematic structural diagram of a safety warning device according to an exemplary embodiment;

FIG. 3 is a schematic gas path diagram of a safety warning device according to an exemplary embodiment;

FIG. 4 is an electrical schematic diagram of a safety warning device according to an exemplary embodiment;

fig. 5 is an electrical connection diagram of a safety warning device according to another exemplary embodiment.

Description of reference numerals:

1-a flute module; 11-treble sub-module; 12-bass sub-module; 13-treble chamber; 14-a bass chamber; 15-a tweeter; 16-woofer;

2-a pilot electromagnetic valve; 21-treble electromagnetic valve; 22-bass solenoid valve;

3-a whistle pneumatic valve; 31-high pitch pneumatic valve; 32-bass pneumatic valve;

4-a whistle control switch;

5-air reservoir;

6-a two-way check valve;

7-cutting off the cock;

81-signal lamp control module; 82-warning signal lights; 83-isolating switch.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the related technology, the high pitch electromagnetic valve and the low pitch electromagnetic valve are arranged in a larger aperture, so that enough compressed gas can be provided for the high pitch air whistle and the low pitch air whistle, and the high pitch air whistle and the low pitch air whistle can be ensured to be normally whistled; however, when the aperture of the electromagnetic valve is large, the movement stroke of the valve core in the electromagnetic valve is large, the reaction speed is slow, and high-frequency whistling is difficult to realize, i.e. the whistling frequency is low.

In order to overcome the technical problems, the embodiment of the application provides a railway vehicle and a safety warning device thereof, wherein a whistle pneumatic valve is arranged, the whistle pneumatic valve is respectively connected with a pilot solenoid valve and an air cylinder, and the whistle pneumatic valve is connected with a whistle module; so, when control air whistle module whistle, accessible pilot solenoid valve drive air whistle pneumatic valve is opened for compressed gas in the reservoir and the pilot solenoid valve can get into in the air whistle module through the air whistle pneumatic valve, thereby not only do benefit to and guarantee to carry sufficient compressed gas to the air whistle module, has still reduced the requirement to the aperture of pilot solenoid valve, does benefit to the reaction rate that improves the pilot solenoid valve, and then does benefit to the frequency that improves the air whistle module whistle.

The structure, function and implementation process of the safety warning device provided in this embodiment are illustrated in the following with reference to the accompanying drawings.

As shown in fig. 2, the present embodiment provides a safety warning device for a rail vehicle, including: the air whistle control switch 4, the reservoir 5, the pilot solenoid valve 2, the air whistle pneumatic valve 3 and the air whistle module 1.

The whistle control switch 4 can be arranged in a cab of the head car, and the whistle control switch 4 can be positioned in an area convenient for a driver to operate in the cab, so that the convenience for the driver to operate is improved; for example, the siren control switch 4 may be provided at a console of the cab. The specific setting position of the whistle control switch 4 in this embodiment is not specifically limited, and may be determined according to actual needs.

And the air cylinder 5 is used for being connected with a main air pipe of the railway vehicle through a pipeline, so that compressed air in the main air pipe can be supplied to the air whistle module 1 through the air cylinder 5. The reservoir 5 may also be used to store compressed gas. In addition, the structure and the arrangement position of the air reservoir 5 can adopt the conventional arrangement in the field, and the embodiment is not particularly limited here.

And the pilot electromagnetic valve 2 is electrically connected with the whistle control switch 4. The pilot electromagnetic valve 2 can be electrically connected with a whistle control switch 4 positioned in a cab through a lead, so that a driver can conveniently control the power on or power off of the pilot electromagnetic valve 2. For example, the driver may cause the siren control switch 4 to control the power on or power off of the pilot solenoid valve 2 by adjusting the gear of the siren control switch 4.

For example, the whistle control switch 4 may be a button that may have a closed position and an open position; when the button is in a closed position, a loop formed by the button and the pilot electromagnetic valve 2 is in a disconnected state, and at the moment, the pilot electromagnetic valve 2 is in a power-off state; the driver can switch the button from the closed position to the open position by pressing the button, so that the loop formed by the button and the pilot solenoid valve 2 is in the closed state, and the pilot solenoid valve 2 can be electrified.

Alternatively, the whistle control switch 4 may be a toggle switch; the toggle switch is provided with a closing position and an opening position; when the toggle switch is in a closed position, a loop formed by the toggle switch and the pilot electromagnetic valve 2 is in a disconnected state, and at the moment, the pilot electromagnetic valve 2 is in a power-off state; the driver accessible is stirred toggle switch and is switched over toggle switch to the position of opening from the closed position for the return circuit that toggle switch and pilot solenoid valve 2 constitute is in the closed condition, and pilot solenoid valve 2 can be got the electricity.

An electromagnetic valve air inlet of the pilot electromagnetic valve 2 is connected with an air outlet of the air cylinder 5 through a pipeline; the pilot solenoid valve 2 has an air outlet and is used for connection with a whistle pneumatic valve 3. The whistle pneumatic valve 3 has a first air inlet and a second air inlet, the first air inlet is connected with the air outlet of the pilot electromagnetic valve 2 through a pipeline, and the second air inlet is connected with the air outlet of the air cylinder 5 through a pipeline. The air inlet of the whistle module 1 is connected with the air outlet of the whistle pneumatic valve 3 through a pipeline.

In one implementation process, when the pilot electromagnetic valve 2 is powered, a coil in the pilot electromagnetic valve 2 is powered and controls a valve core of the pilot electromagnetic valve 2 to move, so that an air inlet and an air outlet of the pilot electromagnetic valve 2 are communicated, and compressed air in the air cylinder 5 can enter the whistle pneumatic valve 3 from the pilot electromagnetic valve 2; when the pressure of the compressed gas entering the whistle pneumatic valve 3 from the pilot solenoid valve 2 reaches the opening pressure of the whistle pneumatic valve 3, the whistle pneumatic valve 3 is opened; afterwards, supply with the compressed gas of air whistle module 1 in the reservoir 5, some compressed gas gets into air whistle pneumatic valve 3 through pilot solenoid valve 2, and another part compressed gas then directly gets into air whistle pneumatic valve 3 through pilot solenoid valve 2, and the compressed gas that gets into air whistle pneumatic valve 3 all supplies with air whistle module 1 for air whistle module 1 can whistle.

When the pilot electromagnetic valve 2 is de-energized, the valve core in the pilot electromagnetic valve 2 restores the original position and cuts off the air inlet and the air outlet of the pilot electromagnetic valve 2, so that the compressed air in the air cylinder 5 cannot enter the whistle pneumatic valve 3 through the pilot electromagnetic valve 2, the pressure of the compressed air in the whistle pneumatic valve 3 is gradually reduced until the pressure is lower than the closing pressure, the whistle pneumatic valve 3 is closed to stop providing the compressed air for the whistle module 1, and the whistle module 1 stops whistling; wherein the closing pressure may be less than or equal to the opening pressure. Of course, the implementation process of the present embodiment is not limited thereto, and the present embodiment is only illustrated here.

In addition, the wind whistle module 1 may adopt a conventional bass wind whistle or a treble wind whistle, and the specific structure of the wind whistle module 1 is not limited in this embodiment.

According to the safety warning device provided by the embodiment, the whistle pneumatic valve 3 is arranged, the whistle pneumatic valve 3 is respectively connected with the pilot solenoid valve 2 and the air cylinder 5, and the whistle pneumatic valve 3 is connected with the whistle module 1; so, when control whistle module 1 whistle, the accessible gets into the compressed gas drive whistle pneumatic valve 3 of pilot solenoid valve 2 and opens, make the compressed gas that gets into pilot solenoid valve 2 can get into whistle module 1 through whistle pneumatic valve 3, and partial compressed gas in the air cylinder 5 can directly get into whistle module 1 through whistle pneumatic valve 3, thereby not only do benefit to and guarantee to carry sufficient compressed gas to whistle module 1, still reduced the requirement to the aperture of pilot solenoid valve, do benefit to the reaction speed who improves pilot solenoid valve 2, and then do benefit to the frequency that improves whistle module 1 and whistle.

In one possible implementation manner, in order to improve the warning effect of the safety warning device, the safety warning device may emit different whistle sounds in different scenes. Illustratively, when the rail vehicle runs through a city intersection or a densely populated area, pedestrians and vehicles nearby can be prompted to avoid timely through a relatively low-sound whistle sound; when the rail vehicle runs through the intersection in the suburb of the city, the warning can be given through the relatively high-sound whistle sound. Wherein, the high-pitched wind whistle with high whistling sound can be sent out; the whistling sound may be a bass whistle.

Alternatively, as shown in fig. 3 and 4, the wind whistle module 1 in the present embodiment may include a treble sub-module 11 and a bass sub-module 12; the treble sub-module 11 is for emitting relatively high sound; the bass sub-module 12 is used to emit relatively low sound. The high-pitch sub-module 11 and the low-pitch sub-module 12 can work independently to produce sound respectively; the treble sub-module 11 and the bass sub-module 12 may also work together to produce sound.

In some examples, the treble sub-module 11 may be a conventional treble flute; the bass submodule 12 may be a conventional bass whistle; the high pitch whistle and the low pitch whistle can be respectively independently installed in rail vehicle's automobile body.

In other examples, the treble sub-module 11 and the bass sub-module 12 may be integrated with each other, that is, the treble sub-module 11 and the bass sub-module 12 may be formed as a single unit, thereby facilitating the installation of the whistle module 1 and simplifying the piping connected to the whistle module 1.

Exemplarily, the wind whistle module 1 comprises a wind whistle seat, and a sounding cavity is arranged in the wind whistle seat; a partition board is arranged in the sound-producing chamber and is used for dividing the sound-producing chamber into a bass chamber 14 and a treble chamber 13; a bass sub-module 12 is arranged in the bass chamber 14; a treble sub-module 11 is provided in the treble chamber 13. Wherein, the baffle can be connected with the inner wall sealing of flute seat. The bass sub-module 12 may be a sound producing component for producing relatively low sound; the treble sub-module 11 may be a sound emitting part for emitting relatively high sound. The specific structure of the sound generating component may be similar to conventional arrangements and will not be described in detail here. In addition, the tweeter module 11 and the woofer module 12 may be connected to a tweeter 15 and a woofer 16, respectively.

In addition, it is understood that: the parts of the embodiment not described for the wind whistle module 1 can adopt the conventional arrangement in the field; for example, the structure of the wind whistle seat not described in the present embodiment may be similar to the conventional arrangement as long as the internal bass chamber 14 and treble chamber 13 can meet the requirements of the bass sub-module 12 and treble sub-module 11, respectively.

Alternatively, the pilot solenoid valve 2 includes a bass solenoid valve and a treble solenoid valve 21; the whistle air-operated valve 3 includes a bass air-operated valve 32 and a treble air-operated valve 31; the high pitch electromagnetic valve 21 and the low pitch electromagnetic valve 22 are respectively connected with the air cylinder 5; the bass electromagnetic valve 22 and the treble electromagnetic valve 21 are respectively and electrically connected with the whistle control switch 4; the bass pneumatic valve 32 and the treble pneumatic valve 31 are respectively connected with the bass solenoid valve 22 and the treble solenoid valve 21; the bass pneumatic valve 32 and the treble pneumatic valve 31 are respectively connected with the treble sub-module 11 and the bass sub-module 12.

The whistle control switch 4 is used for controlling the treble electromagnetic valve 21 to drive the treble air-operated valve 31 to be opened, so that compressed air in the treble electromagnetic valve 21 and the air cylinder 5 can enter the treble sub-module 11 through the treble air-operated valve 31; or the whistle control switch 4 is used to control the bass solenoid valve 22 to drive the bass solenoid valve 22 to open, so that the compressed gas in the bass solenoid valve 22 and the air cylinder 5 can enter the bass sub-module 12 through the bass pneumatic valve 32.

That is, the blast whistle control switch 4 can generate a low-pitched whistle signal or a high-pitched whistle signal according to the operation of the driver; the high pitch electromagnetic valve 21 is used for driving the high pitch pneumatic valve 31 to be opened according to a high pitch signal generated by the wind whistle control switch 4, so that compressed gas in the high pitch electromagnetic valve 21 and the air cylinder 5 can enter the high pitch sub-module 11 through the high pitch pneumatic valve 31; the bass solenoid valve 22 is used for driving the bass solenoid valve 22 to open according to a bass whistle signal generated by the whistle control switch 4, so that the compressed gas in the bass solenoid valve 22 and the air cylinder 5 can enter the bass sub-module 12 through the bass solenoid valve 32.

The following will not exemplify the implementation process of the present embodiment by taking the whistle control switch 4 as a toggle switch. It can be understood that: the implementation process of the present embodiment is not limited thereto, and the present embodiment is only illustrated here. Illustratively, the toggle switch may have a high-pitched tone, a middle-pitched tone, and a low-pitched tone in this order; when the toggle switch is positioned at the middle position, the treble electromagnetic valve 21 and the bass electromagnetic valve 22 are not powered, and the whistle module 1 does not work.

When a driver switches the toggle switch from the middle position to the high-pitch position, the toggle switch can conduct the loop of the high-pitch electromagnetic valve 21, so that the high-pitch electromagnetic valve 21 is electrified, compressed air in the air cylinder 5 can enter the high-pitch pneumatic valve 31 through the high-pitch electromagnetic valve 21 and drive the high-pitch pneumatic valve 31 to be opened; at this time, among the compressed gas supplied to the treble sub-module 11 in the air cylinder 5, a part of the compressed gas enters the treble pneumatic valve 31 through the treble solenoid valve 21, the other part of the compressed gas directly enters the treble pneumatic valve 31, and both parts of the compressed gas enter the treble chamber 13 of the whistle module 1 through the treble pneumatic valve 31, so that the whistle module 1 can emit a treble whistle.

When the driver switches the toggle switch from the middle position to the bass position, the toggle switch can conduct the toggle switch with a loop of the bass solenoid valve 22, so that the bass solenoid valve 22 is electrified, compressed air in the air cylinder 5 can enter the bass solenoid valve 32 through the bass solenoid valve 22 and drive the bass solenoid valve 32 to be opened; at this time, among the compressed gas supplied to the bass sub-module 12 in the air cylinder 5, a part of the compressed gas enters the bass pneumatic valve 32 through the bass solenoid valve 22, the other part of the compressed gas directly enters the bass pneumatic valve 32, and both parts of the compressed gas enter the bass chamber 14 of the whistle module 1 through the bass pneumatic valve 32, so that the whistle module 1 can emit bass whistle.

Wherein, the whistle control switch 4 can also be a button; accordingly, the bass solenoid valve 22 and the treble solenoid valve 21 may be respectively provided with respective buttons. The whistle control switch 4 can generate a high-pitch whistle signal, so that the high-pitch electromagnetic valve 21 can be powered; alternatively, the siren control switch 4 may generate a bass whistle signal so that the bass solenoid valve 22 can be energized. The high tone whistle signal and the low tone whistle signal can be current signals or voltage signals.

In one possible implementation manner, the safety warning device further comprises a two-way check valve 6, the two-way check valve 6 is connected to an air inlet of the bass sub-module 12, and the two-way check valve 6 is respectively connected with the bass pneumatic valve 32 and the treble pneumatic valve 31; the two-way check valve 6 is also electrically connected to the whistle control switch 4.

Wherein, the whistle control switch 4 is used for controlling the two-way check valve 6 to connect the bass pneumatic valve 32 with the bass chamber 14 in the whistle module 1, so that the bass sub-module 12 can whistle; or, the whistle control switch 4 is used to control the two-way check valve 6 to connect the treble pneumatic valve 31 with the treble chamber 13 in the whistle module 1 so that the bass 12 and treble 11 sub-modules can be whistling together.

Illustratively, when the whistle control switch 4 is switched to a high-pitch position, the two-way check valve 6 can communicate the passage between the treble pneumatic valve 31 and the bass chamber 14, and the compressed air flowing out of the treble pneumatic valve 31 enters the treble chamber 13 and the bass chamber 14 respectively, so that the treble sub-module 11 and the bass sub-module 12 work together. When the whistle control switch 4 is switched to the bass level, the two-way check valve 6 can communicate the passage between the bass pneumatic valve 32 and the bass chamber 14, so that the compressed gas flowing out of the bass pneumatic valve 32 can enter the bass chamber 14, and further the bass sub-module 12 works.

Of course, the two-way check valve 6 may also be electrically connected to the treble solenoid valve 21 and the bass solenoid valve 22, respectively, such that the two-way check valve 6 communicates the passage between the treble solenoid valve 31 and the bass chamber 14 according to the energized state of the treble solenoid valve 21, or such that the two-way check valve 6 communicates the passage between the bass solenoid valve 32 and the bass chamber 14 according to the energized state of the bass solenoid valve 22.

In the embodiment, the two-way check valve 6 is arranged, so that a driver can control the two-way check valve 6 through the whistle control switch 4 to communicate the high pitch pneumatic valve 31 with the high pitch chamber 13 and the low pitch chamber 14, and the whistle module 1 emits high pitch whistle and low pitch whistle; as such, there is no need for a foot switch for simultaneously operating the treble whistle and the bass whistle in the cab setting related art.

In one possible implementation manner, the safety warning device further comprises a cut-off cock 7, and the cut-off cock 7 is arranged between the air cylinder 5 and the pilot electromagnetic valve 2; the shutoff cock 7 is used to selectively communicate the reservoir 5 with the pilot solenoid valve 2. By way of example, the shut-off cock 7 may be a common shut-off valve; the cut-off cock 7 can be a normally open valve, that is, in the normal running process of the railway vehicle, the cut-off cock 7 is in an open state to communicate the air cylinder 5 with the pilot electromagnetic valve 2; when the gas circuit in the safety warning device or the rail vehicle needs to be overhauled, the cut-off cock 7 can be switched to a closed state, and a passage between the air cylinder 5 and the pilot electromagnetic valve 2 is cut off, so that the safety of maintainers is guaranteed.

Further, the pilot solenoid valve 2 and the whistle pneumatic valve 3 are provided with exhaust ports, respectively. After the passage between the air cylinder 5 and the pilot electromagnetic valve 2 is cut off by the cut-off cock 7, compressed air in the pilot electromagnetic valve 2, the whistle pneumatic valve 3 and other parts can be emptied by the exhaust port, so that the safety of maintenance personnel is guaranteed.

In the related art, the siren warning device is limited by the sound propagation speed and the transmission distance, so that the warning effect on pedestrians and vehicles far away from the rail vehicle is poor when the vehicles travel at night.

In one possible implementation manner, as shown in fig. 5, the safety warning device further includes a warning signal lamp 82 and a signal lamp control module 81; the signal lamp is arranged on the head car of the rail car; the signal lamp control module 81 is electrically connected with the pilot electromagnetic valve 2 or the whistle control switch 4; the signal lamp control module 81 is used for controlling the warning signal lamp 82 to light and flash when the wind whistle module 1 whistles. Thus, the warning effect can be provided through the warning signal lamp 82, so that the warning effect of the safety warning device is improved, and the safety of the rail vehicle running at night and the safety of pedestrians and other vehicles are improved.

The signal lamp control module 81 may be a control circuit board, and the control circuit board may be used to control the flashing state of the warning signal lamp 82, such as the on-off frequency, the lighting color, and the like.

Optionally, to save energy, the safety warning device may further include a disconnecting switch 83. The isolation switch 83 is used to selectively electrically connect the signal lamp control module 81 with the pilot solenoid valve 2 when the signal lamp control module 81 can be electrically connected with the pilot solenoid valve 2. The isolating switch 83 is used to selectively electrically connect the signal lamp control module 81 with the siren control switch 4 when the signal lamp control module 81 can be electrically connected with the siren control switch 4.

For example, the isolation switch 83 may have an off bit and an on bit. During daytime driving, the isolating switch 83 can be in an isolating position to disconnect the electrical connection of the signal lamp control module 81 and the whistle control switch 4; only the whistle module 1 can play a whistle warning role at the moment; the signal warning lamp does not work. When driving at night or the visibility is lower, isolator 83 can be in the position of conducting to the electricity with signal lamp control module 81 and whistle control switch 4 is connected and is switched on, makes warning signal lamp 82 and whistle module 1 can its warning effect jointly.

Adopt the safety warning device that this embodiment provided:

during daytime driving, the driver can adjust the isolating switch 83 to the isolating position according to the situation; the warning light 82 is not operated. When the rail vehicle runs through a city intersection or a densely populated area, and when the rail vehicle runs through the city intersection or the densely populated area, the whistle control switch 4 can be switched to a low-pitch level, the bass solenoid valve 22 is powered on, one part of the compressed gas in the air cylinder 5 enters the bass chamber 14 through the bass solenoid valve 22 and the bass pneumatic valve 32, and the other part of the compressed gas enters the bass chamber 14 through the bass pneumatic valve 32, so that the bass sub-module 12 can sound. When the rail vehicle runs through the intersection in the suburb of the city, the whistle control switch 4 can be switched to a high-pitch position, the high-pitch electromagnetic valve 21 is electrified, one part of compressed gas in the air cylinder 5 enters the high-pitch pneumatic valve 31 through the high-pitch electromagnetic valve 21, the other part of the compressed gas directly enters the high-pitch pneumatic valve 31, and the compressed gas in the high-pitch pneumatic valve 31 respectively enters the high-pitch cavity 13 and the low-pitch cavity 14, so that the high-pitch sub-module 11 and the low-pitch sub-module 12 are sounded together.

May be prompted by a relatively loud whistle sound. Wherein, the high-pitched wind whistle with high whistling sound can be sent out; the whistling sound may be a bass whistle.

During night driving, the disconnector 83 is switched to the on position. When the rail vehicle runs through a city intersection or a densely populated area, the air whistle control switch 4 can be switched to a low-sound level when the rail vehicle runs through the city intersection or the densely populated area, and the bass electromagnetic valve 22 is electrified, so that the bass sub-module 12 can sound; and the power-on signal of the bass solenoid valve 22 can be transmitted to the signal lamp control module 81, and the signal lamp control module 81 controls the warning signal lamp 82 to light up and flash. When the rail vehicle runs through the intersection in the suburb of the city, the whistle control switch 4 can be switched to the high-pitch position, the high-pitch electromagnetic valve 21 is electrified, so that the low-pitch sub-module 12 and the high-pitch sub-module 11 sound together, the electrified signal of the high-pitch electromagnetic valve 21 can be transmitted to the signal lamp control module 81, and the signal lamp control module 81 controls the warning signal lamp 82 to light and flash.

Furthermore, it is understood that: the safety warning device in this embodiment may be electrically connected to a power module of the rail vehicle, so that the power module of the rail vehicle supplies power to each power load in the safety warning device, such as the pilot electromagnetic valve 2 and the warning signal lamp 82. Of course, an independent power supply can be provided for the safety warning device. The present embodiment is not particularly limited herein.

The present embodiment also provides a rail vehicle, including: a vehicle body and a safety warning device; the safety warning device is mounted to the vehicle body. The structure, function and implementation process of the safety warning device may be the same as those of any of the foregoing embodiments, and details are not repeated here.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.