Rear axle brake fixed-point fire extinguishing monitoring system for electric-transmission dumper, method and electric-transmission dumper

Abstract

Disclosed in the present invention are a rear axle brake fixed-point fire extinguishing monitoring system for an electric-transmission dumper, a method and an electric-transmission dumper. The system comprises a rear axle housing, an infrared flame detector, an automatic positioning and spraying device and a rear axle brake. The infrared flame detector, the automatic positioning and spraying apparatus and the rear axle brake are all installed in the rear axle housing. The infrared flame detector is arranged above the rear axle brake, monitors the flame condition around the brake all the time, and gives an alarm in time in the initial stage of fire. The automatic positioning and spraying device is arranged in the middle of the rear axle brake, and when a fire occurs, can precisely detect an ignition point and perform spraying fire extinguishing. The present invention has the advantages of precise positioning of ignition points and efficient fire extinguishing.

Description

Electric drive dump truck rear axle brake fixed-point fire extinguishing monitoring system and method and electric drive dump truck Technical Field

[0001] The invention relates to a fixed-point fire extinguishing monitoring system for rear axle braking of an electric drive dump truck, and belongs to the field of mining machinery. Background Art

[0002] Electric dump trucks typically install the motor and rear brake within the rear axle housing, where the associated hydraulic hoses and power wiring harnesses are located. Frequent braking during heavily loaded downhill driving in mining areas can cause the brakes to heat up, potentially igniting flammable materials like the hydraulic hoses and power wiring harnesses within the axle housing. Oil leaks within the axle housing can intensify the fire. If not extinguished promptly, the entire vehicle can catch fire, resulting in significant damage. Summary of the Invention

[0003] The invention provides a fixed-point fire extinguishing monitoring system for rear axle braking of an electric drive dump truck, which has the advantages of accurate positioning of the fire point and efficient fire extinguishing.

[0004] The present invention is achieved by the following technical solutions:

[0005] In a first aspect, the present invention discloses a fixed-point fire extinguishing monitoring system for rear axle brake of an electric drive dump truck, comprising:

[0006] The rear axle brake is symmetrically arranged on both sides of the rear axle housing, and one end is connected to the electric motor;

[0007] Infrared flame detectors are symmetrically placed above the rear axle brakes, with one end detecting flames and the other end connected to the controller via a high-temperature resistant wiring harness;

[0008] The automatic positioning spray device is connected to the controller through a signal harness and is installed in the middle position of the rear axle brake. When a fire occurs, it can accurately detect the location of the fire point and spray to extinguish the fire.

[0009] In some embodiments, further comprising:

[0010] The human-computer interaction device is connected to the controller through a wiring harness and is installed on the dashboard of the cab. It receives the alarm information, fire extinguishing and drive system status sent by the controller, and displays the icon alarm prompts, fire extinguishing and drive system status on the main interface.

[0011] In some embodiments, when the controller sends a scanning detection command, a red flame alarm icon appears on the main interface to remind the driver to stop safely and check the situation; when the controller sends a foam tank electric detonation signal, a green spray icon appears on the main interface. If the driver has not stopped the car at this time, the drive system receives the alarm information, performs speed limit control, and reminds the driver to stop again.

[0012] In some embodiments, it further includes:

[0013] GPS, including GPS controller and GPS antenna. The GPS controller receives alarm information, fire extinguishing and driving system status sent by the controller, and realizes remote data transmission through the GPS antenna.

[0014] In some embodiments, it further includes:

[0015] The remote terminal communicates with the GPS via a wireless network, logs into the intelligent operation and maintenance system, and remotely checks the status of the fire extinguishing system. It can also be used in conjunction with unmanned driving to remotely control the spraying.

[0016] In some embodiments, the automatic positioning spraying device includes:

[0017] mounting bracket for connection to rear axle brake;

[0018] The foam fire extinguishing agent inlet located at the mounting bracket is connected to the foam tank;

[0019] A nozzle for spraying foam fire extinguishing agent towards the fire point;

[0020] The horizontal rotation drive device and the horizontal scanning positioning detection device are installed between the foam fire extinguishing agent inlet and the injection port. When the automatic positioning injection device rotates horizontally, the horizontal scanning positioning detection device emits a vertical sector scanning signal to locate the horizontal position;

[0021] The vertical rotation drive device and the vertical scanning positioning detection device are installed between the foam fire extinguishing agent inlet and the injection port. While driving the injection port to rotate in pitch, the vertical scanning positioning detection device emits a small-angle horizontal fan-shaped scanning signal to locate the vertical position.

[0022] In some embodiments, the horizontal rotation drive device, the horizontal scanning positioning detection device, the vertical rotation drive device, and the vertical scanning positioning detection device are all placed in a protective cover.

[0023] In a second aspect, the present invention discloses an electric drive dump truck equipped with the above-mentioned electric drive dump truck rear axle brake fixed-point fire extinguishing monitoring system.

[0024] In a third aspect, the present invention discloses a monitoring method based on the above-mentioned electric drive dump truck rear axle brake fixed-point fire extinguishing monitoring system:

[0025] (1) The infrared flame detector constantly monitors the flame situation around the brake to form a protection zone; in the early stage of a fire, the flame radiation wavelength is converted into an analog electrical signal and then transmitted to the controller via a wire;

[0026] (2) After receiving the real-time analog electrical signal, the controller converts it into a digital electrical signal and sends a scanning detection instruction to the automatic positioning injection device;

[0027] (3) The automatic positioning spray device is in a standby state under normal conditions. It starts after receiving a scanning detection instruction from the controller, and performs detection in the horizontal and vertical directions to find the specific location of the ignition point, and then sends a feedback signal to the controller;

[0028] (4) After receiving the feedback signal, the controller triggers the electric detonation device of the foam tank, opens the foam tank valve, and sprays the foam fire extinguishing agent toward the fire point through the injection port of the automatic positioning injection device.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] It can constantly monitor the flame situation around the brake, forming a protection zone, and promptly sound an alarm at the early stage of a fire, thereby improving fire safety. Within the protection zone, horizontal and vertical scanning detection can accurately detect the location of the fire point and quickly spray to extinguish the fire, thereby improving operational efficiency and agent utilization. After the foam agent is sprayed on the component, it can dry naturally without the need for excessive cleaning, and targeted fire extinguishing is also more convenient for the subsequent cleaning of residual agents. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, as part of this disclosure, are intended to provide a further understanding of the disclosure. The exemplary embodiments of the disclosure and their descriptions are intended to explain the disclosure and do not constitute undue limitations thereon. Obviously, the drawings described below are merely examples, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0032] In the attached figure:

[0033] FIG1 is a schematic diagram of the installation of a fixed-point fire extinguishing monitoring system for rear axle braking of an electric drive dump truck according to the present invention;

[0034] FIG2 is a flow chart showing the principle of fixed-point fire extinguishing according to the present invention;

[0035] FIG3 is a schematic diagram of the automatic positioning injection device of the present invention.

[0036] In the figure: 1 Rear axle housing; 2 Infrared flame detector; 3 Hydraulic hose line; 4 Automatic positioning spray device; 4.1 Signal line inlet; 4.2 Foam fire extinguishing agent inlet; 4.3 Mounting bracket; 4.4 Horizontal rotation drive device; 4.5 Vertical rotation drive device; 4.6 Horizontal scanning positioning detection device; 4.7 Vertical scanning positioning detection device; 4.8 Spray port; 4.9 Protective cover; 5 Power supply harness; 6 Rear axle brake; 7 Foam tank; 8 Controller; 9 Human-computer interaction device; 10 GPS; 11 Remote terminal.

[0037] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. Implementation Method

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0041] As shown in FIG1 , a rear axle brake fixed-point fire extinguishing detection system for an electric drive dump truck includes a rear axle housing 1, a rear axle brake 6, an infrared flame detector 2, a hydraulic hose line 3, an automatic positioning spray device 4, a high-voltage wire harness 5, a foam tank 7, a controller 8, a human-computer interaction device 9, and a GPS 10.

[0042] One end of the rear axle housing 1 is connected to the main frame of the dump truck through a pin shaft and a spherical bearing, and the other end is connected to transmission components such as the reducer, motor, and rear brake 6 through bolts. Components such as hydraulic hose lines 3 and high-voltage electrical harnesses 5 are also arranged inside the housing.

[0043] The rear axle brake 6 is assembled from parts made of sheet materials, symmetrically arranged on both sides of the rear axle housing 1, and one end is connected to the motor by bolts.

[0044] The infrared flame detector 2 is symmetrically placed above the rear axle brake 6, with one end detecting the flame and the other end connected to the controller 8 through a high-temperature resistant wiring harness.

[0045] The automatic positioning spray device 4 is installed in the middle of the rear axle brake 6, with a spray port 4.8 at one end and a foam fire extinguishing agent inlet 4.2 at the other end. The entire device is equipped with a detector, driver, and wiring harness, and this part is usually integrated into a protective cover 4.9 that does not affect the detection scan.

[0046] The controller 8, human-computer interaction device 9 and GPS 10 are installed on the electric drive dump truck and exchange data through the CAN bus. The remote terminal 11 can view the spraying information or remotely control the spraying when used in conjunction with unmanned driving.

[0047] As shown in FIG2 , the electric drive dump truck rear axle brake fixed-point fire extinguishing monitoring method specifically includes the following steps:

[0048] (1) The infrared flame detector 2 constantly monitors the flame situation around the rear axle brake 6 to form a protection zone; in the early stage of a fire, the flame radiation wavelength is converted into an analog electrical signal and then transmitted to the controller 8 via wired transmission;

[0049] (2) After receiving the real-time analog electrical signal, the controller 8 converts it into a digital electrical signal and sends a scanning detection instruction to the automatic positioning injection device 4;

[0050] (3) The automatic positioning injection device 4 is in a standby (low level) state under normal conditions. It starts after receiving a scanning detection instruction (high level) from the controller 8, and performs detection in the horizontal and vertical directions to find the specific location of the ignition point, and then sends a feedback signal to the controller 8;

[0051] (4) After receiving the feedback signal, the controller 8 triggers the electric detonator of the foam tank 7, opens the foam tank valve, and sprays the foam fire extinguishing agent toward the fire point through the injection port 4.8 of the automatic positioning injection device 4.

[0052] As shown in Figure 3, the automatic positioning spraying device 4 includes a signal line inlet 4.1, a foam fire extinguishing agent inlet 4.2, a mounting bracket 4.3, a horizontal rotation drive device 4.4, a vertical rotation drive device 4.5, a horizontal scanning positioning detection device 4.6, a vertical scanning positioning detection device 4.7, and a spray port 4.8; the mounting bracket 4.3 is used to connect to the rear axle brake 6; the foam fire extinguishing agent inlet 4.2 located on the mounting bracket 4.3 is connected to the foam tank 7; the spray port 4.8 sprays the foam fire extinguishing agent at a fixed point on the fire point; the horizontal rotation drive device 4.4 is used to connect to the rear axle brake 6; the foam fire extinguishing agent inlet 4.2 located on the mounting bracket 4.3 is connected to the foam tank 7; the spray port 4.8 sprays the foam fire extinguishing agent at a fixed point on the fire point; the horizontal rotation drive device 4.4 is used to connect to the rear axle brake 6; the horizontal rotation drive device 4.5 is used to connect to the rear axle brake 6; the horizontal rotation drive device 4.4 ... 4 and a horizontal scanning positioning detection device 4.6 are installed between the foam fire extinguishing agent inlet 4.2 and the injection port 4.8. When the automatic positioning injection device 4 rotates horizontally, the horizontal scanning positioning detection device 4.6 transmits a vertical sector scanning signal to determine the horizontal position. The vertical rotation drive device 4.5 and the vertical scanning positioning detection device 4.7 are installed between the foam fire extinguishing agent inlet 4.2 and the injection port 4.8. When the injection port 4.8 is driven to rotate in pitch, the vertical scanning positioning detection device 4.7 transmits a small-angle horizontal sector scanning signal to determine the vertical position.

[0053] Further solution: the horizontal rotation drive device 4.4, the horizontal scanning positioning detection device 4.6, the vertical rotation drive device 4.5, and the vertical scanning positioning detection device 4.7 are all placed in the protective cover 4.9.

[0054] After the controller 8 issues a scanning and detection command, the automatic positioning spray device 4 first activates the horizontal rotation drive device 4.4 and the horizontal scanning and positioning detection device 4.6. As the automatic positioning spray device 4 rotates horizontally, the detection device emits a vertical sector scanning signal to locate the horizontal position. Then, the vertical rotation drive device 4.5 and the vertical scanning and positioning detection device 4.7 are activated. As the nozzle 4.8 rotates in pitch, the detection device emits a small-angle horizontal sector scanning signal to locate the vertical position, thereby determining the specific location of the ignition point.

[0055] As shown in Figure 1, the human-computer interaction device 9 is located on the cab instrument panel and receives alarm information, fire extinguishing, and drive system status from the controller 8. It then displays the alarm icon, fire extinguishing, and drive system status on the main interface. When the controller 8 issues a scan detection command, a red flame alarm icon appears on the main interface, reminding the driver to safely stop and check the situation. When the controller 8 sends a signal for the foam tank to electrically detonate, a green spray icon appears on the main interface. If the driver has not stopped at this point, the drive system receives the alarm and initiates speed control, again reminding the driver to stop.

[0056] As shown in FIG1 , the GPS 10 includes a GPS controller and a GPS antenna. The GPS controller receives alarm information, fire extinguishing and driving system status sent by the controller 8 and realizes remote data transmission through the GPS antenna.

[0057] As shown in FIG1 , the remote terminal 11 logs into the intelligent operation and maintenance system to remotely view the status of the fire extinguishing system, and can be used in conjunction with unmanned driving to remotely control the spraying.

[0058] As can be seen from the above system, the infrared flame detector can constantly monitor the flame situation around the brake, forming a protection zone, issuing an alarm in time at the early stage of a fire, and improving fire safety; within the protection zone, the automatic positioning spray device can accurately detect the location of the fire point through horizontal and vertical scanning detection and quickly spray to extinguish the fire, thereby improving operational efficiency and agent utilization; after the foam agent is sprayed on the component, it can dry naturally without excessive cleaning, and fixed-point fire extinguishing is also more convenient for the subsequent cleaning of residual agents.

[0059] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0060] Furthermore, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are also intended to fall within the scope of protection of the present invention and form different embodiments. For example, in the above embodiments, those skilled in the art will be able to use them in combination based on the known technical solutions and the technical problems to be solved by this application.

[0061] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A fixed-point fire extinguishing monitoring system for rear axle brake of an electric drive dump truck, characterized in that: include: The rear axle brake is symmetrically arranged on both sides of the rear axle housing, and one end is connected to the electric motor; Infrared flame detector, symmetrically placed above the rear axle brake, one end detects the flame and the other end is connected to the controller through a high temperature resistant wiring harness; The automatic positioning spray device is connected to the controller through a signal harness and is installed in the middle of the rear axle brake. When a fire occurs, it can accurately detect the location of the fire point and spray to extinguish the fire.

2. The electric drive dump truck rear axle brake fixed-point fire extinguishing monitoring system according to claim 1 is characterized in that: Also includes: The human-computer interaction device is connected to the controller through a wiring harness and is installed on the dashboard of the cab. It receives the alarm information, fire extinguishing and drive system status sent by the controller, and displays the icon alarm prompts, fire extinguishing and drive system status on the main interface.

3. The electric drive dump truck rear axle brake fixed-point fire extinguishing monitoring system according to claim 2 is characterized in that: When the controller sends a scanning detection command, a red flame alarm icon appears on the main interface to remind the driver to stop the vehicle safely and check the situation; When the controller sends the electric detonation signal of the foam tank, a green spray icon appears on the main interface. If the driver has not stopped the car at this time, the drive system receives an alarm message and performs speed limit control to remind the driver to stop again.

4. The electric drive dump truck rear axle brake fixed-point fire extinguishing monitoring system according to claim 1 is characterized in that: Also includes: GPS, including a GPS controller and a GPS antenna. The GPS controller receives alarm information, fire extinguishing and driving system status sent by the controller, and realizes remote data transmission through the GPS antenna.

5. The electric drive dump truck rear axle brake fixed-point fire extinguishing monitoring system according to claim 4 is characterized in that: Also includes: The remote terminal communicates with the GPS via the wireless network, logs into the intelligent operation and maintenance system, and remotely checks the status of the fire extinguishing system. It can also be used in conjunction with unmanned driving to remotely control the spraying.

6. The electric drive dump truck rear axle brake fixed-point fire extinguishing monitoring system according to claim 1 is characterized in that: The automatic positioning injection device comprises: a mounting bracket for connection to the rear axle brake; The foam fire extinguishing agent inlet located at the mounting bracket is connected to the foam tank; The nozzle for spraying the foam fire extinguishing agent towards the fire point; The horizontal rotation driving device and the horizontal scanning positioning detection device are installed between the foam fire extinguishing agent inlet and the injection port. When the automatic positioning injection device rotates horizontally, the horizontal scanning positioning detection device emits a vertical sector scanning signal to locate the horizontal position; The vertical rotation driving device and the vertical scanning positioning detection device are installed between the foam fire extinguishing agent inlet and the injection port. While driving the injection port to rotate in pitch, the vertical scanning positioning detection device emits a small-angle horizontal fan-shaped scanning signal to locate the vertical position.

7. The electric drive dump truck rear axle brake fixed-point fire extinguishing monitoring system according to claim 1 is characterized by: The horizontal rotation driving device, the horizontal scanning positioning detection device, the vertical rotation driving device, and the vertical scanning positioning detection device are all placed in the protective cover.

8. An electric drive dump truck, characterized in that: The electric drive dump truck rear axle brake fixed-point fire extinguishing monitoring system is installed.

9. A monitoring method based on the electric drive dump truck rear axle brake fixed-point fire extinguishing monitoring system according to any one of claims 1 to 7, characterized in that: (1) The infrared flame detector constantly monitors the flame situation around the brake to form a protection area; in the early stage of a fire, the flame radiation wavelength is converted into an analog electrical signal and then transmitted to the controller by wire; (2) After receiving the real-time analog electrical signal, the controller converts it into a digital electrical signal and sends a scanning detection instruction to the automatic positioning injection device; (3) The automatic positioning spray device is in a standby state under normal conditions, and is started after receiving a scanning detection instruction from the controller, and performs detection in the horizontal and vertical directions to find the specific location of the ignition point, and then sends a feedback signal to the controller; (4) After receiving the feedback signal, the controller triggers the electric detonation device of the foam tank, opens the foam tank valve, and sprays the foam fire extinguishing agent toward the fire point through the injection port of the automatic positioning injection device.

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