Electric bus smoke early warning device

Abstract

The utility model discloses an electric bus smoke early warning device, which comprises an early warning device main body and an air sampling pipeline which are arranged in a rear cabinet of an electric bus, the early warning device main body comprises an early warning device box body, and a negative pressure generator and a smoke sensor which are arranged in the early warning device box body; a sampling pipe air outlet and a plurality of sampling pipe air inlets are formed in the air sampling pipeline, the sampling pipe air inlets are opposite to the vehicle-mounted electrical equipment, and the sampling pipe air outlet is communicated with the inner cavity of the early warning device box body; the controller and the alarm device are arranged in a cab of the electric bus; the signal transmission device is used for signal transmission between the controller and the smoke sensor; and the distribution box is used for supplying power. According to the electric bus smoke early warning device disclosed by the utility model, a bus driver can know and deal with conditions such as spontaneous combustion of vehicle-mounted electrical equipment in a rear cabinet of an electric bus at the initial stage, so that the bus safety and the passenger safety are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of bus smoke alarms, in particular to an early warning device for smoke on an electric bus. Background Art

[0002] Electric buses are powered by an onboard power source, either a battery or a cable-powered device. These buses have received strong government support and are experiencing rapid growth due to their low noise levels, high stability, and zero emissions.

[0003] Electric buses have a large number of on-board electrical equipment, which are generally placed in the rear cabinet of the electric bus. During the driving process of the electric bus, the on-board electrical equipment is prone to spark discharge or spontaneous combustion due to equipment aging, leakage, water leakage, short circuit and other reasons; however, the on-board electrical equipment is set in the rear cabinet of the electric bus, and it is not easy for the driver to detect it in the early stage of spontaneous combustion, which affects the bus driver's timely handling, and thus there is a problem that affects the safety of the bus and passengers.

[0004] Therefore, how to promptly detect and issue early warnings when spontaneous combustion of onboard electrical equipment in the rear cabinet of an electric bus occurs is a technical problem that urgently needs to be solved. Utility Model Content

[0005] Aiming at the above problems, the utility model proposes an electric bus smoke early warning device.

[0006] The technical means adopted by this utility model are as follows:

[0007] A smoke early warning device for an electric bus, comprising:

[0008] An early warning device body is provided in the rear cabinet of the electric bus, the early warning device body comprising an early warning device box, a negative pressure generator and a smoke sensor, the negative pressure generator and the smoke sensor being provided in the early warning device box;

[0009] An air sampling pipe is provided in the rear cabinet of the electric bus, wherein the air sampling pipe is provided with a sampling pipe air outlet and a plurality of sampling pipe air inlets, the sampling pipe air inlets are arranged opposite to the on-board electrical equipment in the rear cabinet of the electric bus, and the sampling pipe air outlet is communicated with the inner cavity of the early warning device box;

[0010] A controller provided in the cab of an electric bus;

[0011] An alarm device installed in the cab of an electric bus;

[0012] A signal transmission device for transmitting signals between the controller and the smoke sensor; and

[0013] Distribution box for power supply.

[0014] Furthermore, one side of the early warning device box is connected to the sampling tube outlet, the other side of the early warning device box is provided with the negative pressure generator, and the smoke sensor is provided between the sampling tube outlet and the negative pressure generator.

[0015] Furthermore, the signal transmission device is a wireless signal transmission device; the wireless signal transmission device includes a wireless transmitter and a wireless receiver; the wireless transmitter is electrically connected to the smoke sensor, and the wireless receiver is electrically connected to the controller.

[0016] Furthermore, the distribution box is arranged in the rear cabinet of the electric bus, and a voltage stabilizer and a wireless transmitter are arranged in the distribution box.

[0017] Furthermore, the alarm device includes an acoustic alarm and / or a light alarm.

[0018] Furthermore, the wireless signal transmission device also includes a wireless transmitting antenna and a wireless receiving antenna. The wireless transmitting antenna is fixed in the rear cabinet of the electric bus through a magnet, and the wireless receiving antenna is placed in the driving cab of the electric bus.

[0019] Furthermore, the air sampling pipeline has a plurality of horizontal sampling tubes and a connecting tube for connecting the horizontal sampling tubes and the early warning device box;

[0020] The horizontal sampling tube is arranged on the upper side of the on-board electrical equipment in the rear cabinet of the electric bus, and a plurality of sampling tube air inlets are provided on the side of the horizontal sampling tube facing the on-board electrical equipment.

[0021] Furthermore, the distance between the air inlets of two adjacent sampling tubes on the horizontal sampling tube is 70 mm to 120 mm.

[0022] Furthermore, it also includes a system status display system arranged in the electric bus driving room, and the system status display system is connected to the controller.

[0023] Compared with the prior art, the electric bus smoke early warning device disclosed by the present invention has the following beneficial effects: since the warning device body and the air sampling pipeline are arranged in the rear cabinet of the electric bus, the negative pressure generator of the warning device body can suck other gases in the rear cabinet of the electric bus into the warning device box, and detect the sampled gas through the smoke sensor, so as to obtain the smoke concentration in the rear cabinet of the electric bus as early as possible, and at the same time transmit it to the controller and alarm device placed in the cab of the electric bus through the signal transmission device, so that when the on-board electrical equipment in the rear cabinet of the electric bus generates smoke due to spontaneous combustion or the like in the early stage, the bus driver can be informed and deal with it in time, thereby ensuring the safety of the bus and passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of the electric bus smoke early warning device disclosed in the utility model located in the rear cabinet of the electric bus;

[0025] Figure 2 This is a structural diagram of the electric bus smoke early warning device disclosed in the utility model located in the driver's cab;

[0026] In the figure: 1. Warning device body; 10. Warning device box; 2. Air sampling pipe; 20. Sampling tube air outlet; 21. Sampling tube air inlet; 22. Horizontal sampling tube; 23. Connecting pipe; 24. Air inlet pipe; 3. Distribution box; 40. Wireless transmitting antenna; 41. Wireless receiving antenna; 5. On-board electrical equipment; 6. Electric bus rear cabinet; 60. Vehicle body frame; 7. System status display system; 70. Indicator light; 71. Control button; 8. Alarm device box. DETAILED DESCRIPTION

[0027] like Figure 1 and Figure 2 As shown, the electric bus smoke early warning device disclosed in the utility model includes:

[0028] An early warning device body 1 is provided in the rear cabinet of an electric bus. The early warning device body 1 includes an early warning device box 10, a negative pressure generator, and a smoke sensor. The negative pressure generator and the smoke sensor are provided in the early warning device box 10.

[0029] An air sampling pipe 2 is provided in the rear cabinet 6 of the electric bus, and the air sampling pipe 2 is provided with a sampling pipe air outlet 20 and a plurality of sampling pipe air inlets 21. The sampling pipe air inlets 21 are arranged opposite to the on-board electrical equipment 5 in the rear cabinet 6 of the electric bus, and the sampling pipe air outlet 20 is communicated with the inner cavity of the early warning device box 10;

[0030] A controller provided in the cab of an electric bus;

[0031] An alarm device installed in the cab of an electric bus;

[0032] A signal transmission device for transmitting signals between the controller and the smoke sensor; and

[0033] Distribution box 3 for power supply.

[0034] Specifically, in this embodiment, the early warning device box adopts a square box structure, which is fixed to the body frame in the rear cabinet of the electric bus by standard fasteners such as bolts. It is generally arranged in the empty space on the lower or upper side of the rear cabinet according to the spatial arrangement of the on-board electrical equipment in the rear cabinet of the electric bus; a negative pressure generator and a smoke sensor are provided in the early warning device box, and the negative pressure transmitter generally adopts a negative pressure pump, and the negative pressure generator can generate a negative pressure space in the early warning device box; the early warning device box is also connected to the air sampling pipeline, and the air sampling pipeline is provided with a sampling tube air outlet and multiple sampling tube air inlets, the sampling tube air outlet is connected to the pre-tightening device box, and the sampling tube air inlet is arranged relative to the on-board electrical equipment in the rear cabinet of the electric bus (that is, the sampling tube air inlet is arranged near the on-board electrical equipment Near), the negative pressure generator generates a negative pressure space in the early warning device box so that the air near the on-board electrical equipment enters the early warning device box through the sampling tube air inlet of the air sampling pipeline, and the smoke sensor in the early warning device box collects the smoke concentration of the sampled gas. The smoke sensor transmits the collected signal to the signal transmission device, and the signal transmission device transmits the smoke concentration signal to the controller set in the electric bus cab. The controller obtains the smoke concentration signal and controls the alarm device to sound an alarm when the smoke concentration signal is greater than the set threshold value (the smoke concentration near the on-board electrical equipment will increase in the early stage of spontaneous combustion, etc.), so that the bus driver can be informed and deal with the on-board electrical equipment in the early stage of spontaneous combustion, thereby ensuring the safety of the bus and passengers. In this embodiment, the smoke sensor is fixed to the early warning device box by bolts and other structures.

[0035] Furthermore, one side of the early warning device box 10 is connected to the sampling tube outlet 20, the other side of the early warning device box 10 is provided with the negative pressure generator, and the smoke sensor is provided between the sampling tube outlet and the negative pressure generator.

[0036] Specifically, in this embodiment, the early warning device housing is a square housing structure, which is fixed to the vehicle body frame in the rear cabinet of the electric bus, and the side provided with the negative pressure generator faces the outside of the vehicle body, so that the negative pressure generator can discharge the other gases in the early warning device housing. An opening is processed on the square housing to facilitate the installation of a negative pressure pump, which corresponds to the opening and is fixed to the square housing by a bolt structure. The side of the early warning device housing facing the on-board electrical equipment is connected to the sampling tube outlet of the air sampling pipeline; the smoke sensor is provided between the sampling tube outlet and the negative pressure generator. This arrangement can ensure that the sampled gas flows smoothly, and at the same time, it can ensure that the smoke gas sensor can effectively detect the collected gas, thereby ensuring the accuracy of the smoke gas detection.

[0037] Furthermore, the signal transmission device is a wireless signal transmission device; the wireless signal transmission device includes a wireless transmitter and a wireless receiver; the wireless transmitter is electrically connected to the smoke sensor, and the wireless receiver is electrically connected to the controller.

[0038] Specifically, the signal transmission device can use a signal line for transmission. Preferably, the signal transmission device uses a wireless signal transmission device. By using a wireless signal transmission device, the structure of the early warning device is simplified and its installation and fixation are facilitated (there is no longer a need for a longer signal line when using a signal line for data transmission and the difficulties caused by wiring during the installation process).

[0039] Furthermore, the distribution box 3 is arranged in the rear cabinet 6 of the electric bus, and a voltage stabilizer and a wireless transmitter are arranged in the distribution box 3 .

[0040] Specifically, in this application, the distribution box is fixed in the rear cabinet of the electric bus by bolts and other marked fasteners. A voltage stabilizer is provided in the distribution box, and the distribution box is connected to the standard junction box (power junction box) inside the rear cabinet. The voltage output in the marked junction box is converted into a stable DC24V through the voltage stabilizer to power the negative pressure generator, smoke sensor and signal transmission device; at the same time, the wireless transmitter is also placed in the distribution box, making the equipment modular for easy installation and maintenance.

[0041] Furthermore, the alarm device includes an acoustic alarm and / or a light alarm.

[0042] Specifically, in this embodiment, an alarm device housing 8 is provided within the cab of the electric bus. This housing houses an alarm device, which may be an audible and / or visual alarm, to provide an audible and / or visual alarm when the smoke concentration within the rear cabinet of the electric bus exceeds a set value. In this embodiment, both the controller and wireless receiver are housed within the alarm device housing and are powered by a standard vehicle power supply junction box within the equipment box behind the driver.

[0043] Furthermore, the wireless signal transmission device also includes a wireless transmitting antenna 40 and a wireless receiving antenna 41. The wireless transmitting antenna 40 is fixed in the rear cabinet 6 of the electric bus by a magnet, and the wireless receiving antenna 41 is placed in the driving cab of the electric bus. By setting the wireless transmitting antenna and the wireless receiving antenna, the effective transmission of the signal can be guaranteed. At the same time, the wireless transmitting antenna is fixed in the rear cabinet of the electric bus by a magnet (magnetic attraction), and the position of the wireless transmitting antenna can be easily adjusted so that the wireless transmitting antenna is set at the ventilation port of the rear cabinet, thereby ensuring the transmission of the signal. The wireless receiving antenna is installed in the driver's cab by a suction cup or screw structure. The wireless transmitting antenna is connected to the wireless transmitter through a signal line, and the wireless receiving antenna is connected to the wireless receiver through a signal line.

[0044] Furthermore, the air sampling pipe 2 has multiple horizontal sampling tubes 22 and connecting tubes 23 for connecting the horizontal sampling tubes 22 and the early warning device box 10; the horizontal sampling tubes 22 are arranged on the upper side of the on-board electrical equipment in the rear cabinet of the electric bus, and the horizontal sampling tubes 22 are provided with multiple sampling tube air inlets 21 on the side facing the on-board electrical equipment.

[0045] Specifically, in this embodiment, the air sampling pipeline 2 has multiple horizontal sampling tubes 22 and connecting tubes 23 for connecting the horizontal sampling tubes 22 and the early warning device box 10; the number of horizontal sampling tubes can be arranged according to factors such as different vehicle models, the size of the space in the rear cabinet of the electric bus, and the number of on-board electrical equipment. For example, two, three or four tubes can be arranged horizontally. In this embodiment, the horizontal sampling tube adopts a high-temperature resistant and corrosion-resistant transparent rubber tube. The horizontal sampling tube is fixed to the body frame 60 in the rear cabinet of the electric bus through a fixed bracket or a cable tie and is located near the on-board electrical equipment. In order to reduce the distance between the air inlet of the sampling tube and the on-board electrical equipment, an air inlet tube 24 is also provided on the horizontal sampling tube. The air inlet end of the air inlet tube is close to the on-board electrical equipment. One end of the horizontal sampling tube 22 is a blocking end, and the other end is connected to the early warning device box through a connecting tube 23. In order to facilitate the layout and connection of the horizontal sampling tube and the early warning device box, the connecting tube can adopt a high-temperature resistant hose, which can be laid along the equipment gap in the rear cabinet.

[0046] Furthermore, the distance between two adjacent sampling tube air inlets 21 on the horizontal sampling tube 22 is 70 mm to 120 mm.

[0047] Specifically, in this embodiment, one end of the horizontal sampling tube is a closed end, and multiple sampling tube air inlets (or multiple air inlet tubes) are evenly distributed on the side of the horizontal sampling tube close to the vehicle-mounted electrical equipment. The distance between two adjacent sampling tube air inlets is 70mm-120mm. This distance can effectively collect the gas near the vehicle-mounted electrical equipment, and then accurately detect the flue gas concentration of the gas near the vehicle-mounted electrical equipment through the flue gas sensor.

[0048] Furthermore, it also includes a system status display system 7 arranged in the driving room of the electric bus, and the system status display system is connected to the controller.

[0049] Specifically, in this embodiment, the system status display system is an indicator light 70 and a control button 71. The indicator light and the control button are both connected to the controller. When the smoke concentration collected by the smoke sensor is less than the set threshold, the controller controls the indicator light (green indicator light) to light up to indicate that the vehicle-mounted electrical equipment is working normally. When the smoke concentration collected by the smoke sensor is greater than or equal to the set threshold, the controller controls another indicator light (red indicator light) to light up to indicate that the vehicle-mounted electrical equipment is abnormal. At the same time, the sound and light alarm sounds an alarm, and the control button can be contacted to sound an alarm. In this embodiment, the system status display system is installed on the alarm device box 8.

[0050] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electric bus smoke early warning device, characterized in that: include: An early warning device body is provided in the rear cabinet of the electric bus, the early warning device body comprising an early warning device box, a negative pressure generator and a smoke sensor, the negative pressure generator and the smoke sensor being provided in the early warning device box; An air sampling pipe is provided in the rear cabinet of the electric bus, wherein the air sampling pipe is provided with a sampling pipe air outlet and a plurality of sampling pipe air inlets, the sampling pipe air inlets are arranged opposite to the on-board electrical equipment in the rear cabinet of the electric bus, and the sampling pipe air outlet is communicated with the inner cavity of the early warning device box; A controller provided in the cab of an electric bus; An alarm device installed in the cab of an electric bus; A signal transmission device for transmitting signals between the controller and the smoke sensor; and Distribution box for power supply.

2. The electric bus smoke early warning device according to claim 1, characterized in that: One side of the early warning device box is connected to the sampling tube outlet, the other side of the early warning device box is provided with the negative pressure generator, and the smoke sensor is provided between the sampling tube outlet and the negative pressure generator.

3. The electric bus smoke early warning device according to claim 1, characterized in that: The signal transmission device is a wireless signal transmission device; the wireless signal transmission device includes a wireless transmitter and a wireless receiver; the wireless transmitter is electrically connected to the smoke sensor, and the wireless receiver is electrically connected to the controller.

4. The electric bus smoke early warning device according to claim 3, characterized in that: The distribution box is arranged in the rear cabinet of the electric bus, and a voltage stabilizer and a wireless transmitter are arranged in the distribution box.

5. The electric bus smoke early warning device according to claim 1, characterized in that: The alarm device includes an acoustic alarm and / or a light alarm.

6. The electric bus smoke early warning device according to claim 3, characterized in that: The wireless signal transmission device also includes a wireless transmitting antenna and a wireless receiving antenna. The wireless transmitting antenna is fixed in the rear cabinet of the electric bus through a magnet, and the wireless receiving antenna is placed in the driving cab of the electric bus.

7. The electric bus smoke early warning device according to claim 1, characterized in that: The air sampling pipeline has a plurality of horizontal sampling tubes and a connecting tube for connecting the horizontal sampling tubes and the early warning device box; The horizontal sampling tube is arranged on the upper side of the on-board electrical equipment in the rear cabinet of the electric bus, and a plurality of sampling tube air inlets are provided on the side of the horizontal sampling tube facing the on-board electrical equipment.

8. The electric bus smoke early warning device according to claim 7, characterized in that: The distance between the air inlets of two adjacent sampling tubes on the horizontal sampling tube is 70mm-120mm.

9. The electric bus smoke early warning device according to claim 1, characterized in that: The system also includes a system status display system arranged in the driving room of the electric bus, and the system status display system is connected to the controller.

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