Fire fighting truck hybrid power system and fire fighting truck

Abstract

The invention relates to a fire fighting truck hybrid power system and a fire fighting truck, and the fire fighting truck hybrid power system comprises a power utilization module (1) which comprises a first electric driving assembly (10) and a first electric driving part (11); the power supply module (2) is configured to provide electric energy for the power utilization module (1), the power supply module (2) comprises a range extender (21) and a power battery (22), and the range extender (21) is configured to provide electric energy for the power battery (22); the high-voltage distribution unit (3) is configured to distribute the electric energy from the power supply module (2) to the power utilization module (1); and the controller is configured to enable the range extender (21) and the power battery (22) to directly supply electric energy to the power utilization module (1) under the condition that the whole vehicle power demand of the fire fighting truck is greater than preset power, and only enable the power battery (22) to directly supply electric energy to the power utilization module (1) under the condition that the whole vehicle power demand of the fire fighting truck is not greater than the preset power.

Description

Technical Field

[0001] The present disclosure relates to the field of fire trucks, and particularly to a hybrid power system for a fire truck and a fire truck. Background Art

[0002] Traditional internal combustion engine-driven airport fire trucks can no longer meet the requirements of the electrification era in China in terms of starting acceleration and airport fuel emissions. At present, manufacturers at home and abroad have begun to layout new energy airport fire rescue equipment, and new energy airport fire trucks have become the development trend of the industry.

[0003] At present, in the extended-range hybrid system of new energy airport fire trucks on the market, the chassis travels using a power battery + drive motor, while the upper-mounted fire extinguishing operation uses an engine drive + fire pump. The chassis travel and the upper-mounted fire operation are driven and controlled separately, and the fuel and electric power systems cannot be coupled to form a driving force, resulting in insufficient continuous acceleration performance of the whole machine under heavy load conditions such as starting and rapid acceleration, and driving and extinguishing fires while driving; the flow control of the upper-mounted fire operation of airport fire trucks needs to be continuously provided by engine power in different scenarios, with poor economy, environmental protection and low efficiency. Summary of the Invention

[0004] Embodiments of the present disclosure provide a hybrid power system for a fire truck and a fire truck, which can improve the adaptability of the fire truck to high-power fire operation scenarios.

[0005] According to one aspect of the present disclosure, a hybrid power system for a fire truck is proposed, including:

[0006] An electric power consumption module, including a first electric drive assembly and a first electric drive component. The first electric drive assembly is configured to drive the chassis to travel, and the first electric drive component is configured to drive the upper-mounted fire operation;

[0007] A power supply module, configured to supply electric energy to the electric power consumption module. The power supply module includes a range extender and a power battery, and the range extender is configured to supply electric energy to the power battery;

[0008] A high-voltage distribution unit, connected between the power supply module and the electric power consumption module, and configured to distribute the electric energy from the power supply module to the electric power consumption module; and

[0009] A controller, configured to, when the power demand of the whole fire truck is greater than a preset power, enable both the range extender and the power battery to directly supply electric energy to the electric power consumption module, and when the power demand of the whole fire truck is not greater than the preset power, only enable the power battery to directly supply electric energy to the electric power consumption module.

[0010] In some embodiments, the electric power consumption module further includes a second electric drive component, and the second electric drive component is configured to drive the hydraulic oil pump of the fire truck.

[0011] In some embodiments, the first electric drive assembly includes a front electric drive unit and a rear electric drive unit. The front electric drive unit is configured to provide driving force to the front axle, and the rear electric drive unit is configured to provide driving force to the through axle and the rear axle.

[0012] According to another aspect of the present disclosure, a fire truck is provided, including the fire truck hybrid power system of the above embodiments. The fire truck includes a fire pump, which includes a pump impeller and a first electric drive component. The output shaft of the first electric drive component is greater than a preset length, and the pump impeller is directly connected to the output shaft to form an integrated electric drive pump.

[0013] In some embodiments, the fire truck further includes a roof gun connected to the boom and a first hydraulic slewing reducer. The first hydraulic slewing reducer is configured to drive the roof gun to pitch, and the pitch angle range of the roof gun from the horizontal state includes -90° to 90°.

[0014] In some embodiments, the fire truck further includes a puncture system connected to the boom. The puncture system includes a puncture gun and a hydraulic cylinder provided with an accumulator. The puncture gun is configured to penetrate an obstacle and spray a fire extinguishing agent. The hydraulic cylinder is configured to drive the puncture gun to extend and retract. The accumulator is configured to instantaneously release energy to drive the puncture gun to eject and extend. The puncture gun is provided with a nozzle for spraying the fire extinguishing agent, and the puncture gun is configured to spray the fire extinguishing agent only when in the extended state.

[0015] In some embodiments, the puncture system further includes a second hydraulic slewing reducer, which is configured to drive the puncture gun to pitch, and the pitch angle range of the puncture gun from the horizontal state includes -90° to 90°.

[0016] In some embodiments, the fire truck further includes a display and a fire extinguishing agent delivery system. The display is configured to receive user input. The fire extinguishing agent delivery system includes:

[0017] A liquid storage container, including a first container and a second container. The first container is used to store water, and the second container is used to store foam;

[0018] A powder storage container and a gas storage container. The powder storage container is used to store dry powder, and the gas storage container is used to store nitrogen. The powder storage container and the gas storage container are connected by a gas pipe and controlled by a valve group; and

[0019] A fire extinguishing agent spraying terminal, which is connected to the liquid storage container through a liquid delivery pipeline and / or connected to the powder storage container through a dry powder delivery pipeline. The fire extinguishing agent spraying terminal is configured to spray a fire extinguishing agent. The fire extinguishing agent includes at least one of water, foam, and dry powder. The fire extinguishing agent spraying terminal includes at least one of a puncture gun, a roof gun, a front vehicle gun, a water hose reel, a dry powder hose reel, an upper vehicle spray nozzle, and a lower vehicle spray nozzle;

[0020] Among them, the controller is configured to control the operating state of the fire extinguishing agent delivery system based on user input, and the operating state includes at least one of the fire extinguisher spray terminal spraying the fire extinguishing agent, the fire extinguishing agent spray terminal stopping spraying the fire extinguishing agent, the self-cleaning of the fire extinguishing agent delivery system, and discharging the residual fire extinguishing agent.

[0021] In some embodiments, the user input includes a first execution instruction and a first termination instruction for the fire extinguishing agent being water. The controller is configured to sequentially open the water suction control valve, the fire pump, and the electronically controlled flow valve when receiving the first execution instruction, so that the fire extinguishing agent spray terminal sprays water. The electronically controlled flow valve is configured to control the water outlet flow rate of the fire extinguishing agent spray terminal. The controller is further configured to sequentially close the electronically controlled flow valve, the fire pump, and the water suction control valve when receiving the first termination instruction, so that the fire extinguishing agent spray terminal stops spraying water.

[0022] In some embodiments, the user input includes a second execution instruction and a second termination instruction for the fire extinguishing agent being foam. The controller is configured to open the foam control valve group when sequentially receiving the first execution instruction and the second execution instruction. The controller is further configured to close the foam valve group when receiving the second termination instruction.

[0023] In some embodiments, the controller is configured to adjust the foam ratio based on user input.

[0024] In some embodiments, the user input includes a foam cleaning instruction. The controller is configured to open the foam flushing control valve when receiving the foam cleaning instruction.

[0025] In some embodiments, the user input includes a residual water discharge instruction. The controller is configured to open the drain control valve and the electronically controlled flow valve when receiving the residual water discharge instruction.

[0026] In some embodiments, the user input includes a third execution instruction and a third termination instruction for the fire extinguishing agent being dry powder. The controller is configured to sequentially open the dry powder high-pressure control valve, open the dry powder inlet control valve, and forward-adjust the switching valve when receiving the third execution instruction. The switching valve is configured to block the liquid delivery pipeline and conduct the dry powder delivery pipeline when switching the pipeline forward, so that the fire extinguishing agent spray terminal sprays dry powder. The controller is further configured to reverse-adjust the switching valve, close the dry powder inlet control valve, and close the dry powder high-pressure control valve when receiving the third termination instruction.

[0027] In some embodiments, the user input includes a dry powder cleaning instruction. The controller is configured to open the purge control valve when receiving the dry powder cleaning instruction.

[0028] In some embodiments, the user input includes a residual gas discharge instruction, and the controller is configured to open the exhaust control valve of the powder storage container and the residual gas discharge control valve of the dry powder delivery pipeline when receiving the residual gas discharge instruction.

[0029] Based on the above technical solutions, in the fire truck of the embodiments of the present disclosure, the range extender and the power battery both participate in providing power output when high power is required, which can ensure the peak power demand and meet the high power requirements such as the sharp acceleration at the start of the fire truck, the continuous high-power acceleration or the fire extinguishing while driving; when low power is required, only the power battery supplies power, which can reduce the running time of the range extender and reduce fuel consumption and noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of this application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation to the present disclosure. In the drawings:

[0031] Figure 1 It is a schematic diagram of the composition of some embodiments of the hybrid power system of the fire truck of the present disclosure.

[0032] Figure 2 It is a schematic structural diagram of a first perspective of some embodiments of the fire truck of the present disclosure.

[0033] Figure 3 It is a partial schematic structural diagram of some embodiments of the fire truck of the present disclosure.

[0034] Figure 4 It is a schematic structural diagram of some embodiments of the fire pump of the present disclosure.

[0035] Figure 5 It is a schematic structural diagram of some embodiments of the pitch operation of the roof gun of the fire truck of the present disclosure.

[0036] Figure 6 It is a schematic structural diagram of a second perspective of some embodiments of the fire truck of the present disclosure.

[0037] DESCRIPTION OF THE REFERENCE NUMERALS

[0038] 1, power consumption module; 2, power supply module; 3, high-voltage distribution unit; 4, fire pump; 5, boom; 6, puncture system; 7, display; 8, fire extinguishing agent delivery system; 9, turntable;

[0039] 10. First electric drive assembly; 11. First electric drive component; 12. Second electric drive component; 13. Auxiliary electrical appliance; 100. Output shaft; 110. Front electric drive unit; 111. Front axle; 120. Rear electric drive unit; 101. Roof gun; 102. Piercing gun; 60. Hydraulic cylinder; 103. Front vehicle gun; 104. Water reel; 105. Dry powder reel; 106. Upper vehicle spray nozzle; 107. Lower vehicle spray nozzle; 121. Through axle; 122. Rear axle; 21. Range extender; 22. Power battery; 40. Water pump impeller; 51. First hydraulic rotary reducer; 52. Second hydraulic rotary reducer; 81. Liquid storage container; 82. Dry powder storage container; 83. Gas storage container; 84. Dry powder delivery pipeline; 85. Switching valve; 86. Liquid delivery pipeline. Detailed implementation manners

[0040] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and in no way limits the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values set forth in these embodiments should be construed as merely exemplary and not as limitations.

[0041] The terms "first", "second" and similar terms used in the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different parts. Terms such as "comprising" or "including" mean that the elements before the term cover the elements listed after the term, and do not exclude the possibility of also covering other elements. Terms such as "upper", "lower", "left", "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0042] In the present disclosure, when it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When it is described that a specific device is connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices and have an intermediate device.

[0043] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by those of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, for example, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such herein.

[0044] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0045] Based on the various embodiments of the present disclosure above, without explicit negation or conflict, the technical features of one embodiment can be beneficially combined with one or more other embodiments.

[0046] The inventors found during the research process that in the related art, a diesel engine is used to drive a generator to charge the energy storage system. The energy storage system uses power-type batteries to provide power, but the driving duration is short, unable to meet continuous high-power output, the acceleration performance is insufficient, there is a conflict between the fire pump and the driving power of the chassis, and it is impossible to achieve full-power fire extinguishing while accelerating at high speed.

[0047] To solve the above problems, first, the present disclosure provides a hybrid power system for a fire truck, as Figure 1 shown. The hybrid power system includes:

[0048] An electricity consumption module 1, including a first electric drive assembly 10 and a first electric drive component 11. The first electric drive assembly 10 is configured to drive the chassis to travel, and the first electric drive component 11 is configured to drive the fire fighting operation of the superstructure;

[0049] A power supply module 2, configured to supply electrical energy to the electricity consumption module 1. The power supply module 2 includes a range extender 21 and a power battery 22. The range extender 21 is configured to supply electrical energy to the power battery 22;

[0050] A high-voltage distribution unit 3, connected between the power supply module 2 and the electricity consumption module 1. The high-voltage distribution unit 3 is configured to distribute the electrical energy from the power supply module 2 to the electricity consumption module 1; and

[0051] A controller, configured to, when the overall vehicle power demand of the fire truck is greater than a preset power, cause both the range extender 21 and the power battery 22 to directly supply electrical energy to the electricity consumption module 1, and when the overall vehicle power demand of the fire truck is not greater than the preset power, only cause the power battery 22 to directly supply electrical energy to the electricity consumption module 1.

[0052] Specifically, the range extender 21 starts charging only when the battery power reaches a set value and does not operate continuously. The high-voltage distribution unit 3 (Power Distribution Unit, PDU), also known as the high-voltage distribution box, is powered by the range extender 21 and the power battery 22 independently, either separately or simultaneously. The PDU supplies power to each electric module (motor or motor controller) according to the Vehicle Control Unit (VCU) to drive the motor to work.

[0053] Specifically, when the whole fire truck has a low power demand, it is driven only by the battery to improve economy; during the starting and rapid acceleration stage, the range extender 21 intervenes when the battery power is insufficient for peak power compensation, solving the defect of short-term discharge (≤60 seconds) of traditional power-type batteries and supporting continuous full-power output for 2 - 3 minutes. The fire truck is preferentially driven by the power battery 22. When extinguishing a fire while driving, the electric module 1 drives the fire pump, and full-power fire-fighting operations can also be achieved while the vehicle is moving.

[0054] Optionally, the first electric drive component 11 can be a fire pump motor or the like.

[0055] When the fire truck of this embodiment has a high power demand, both the range extender 21 and the power battery 22 participate in providing power output, which can ensure peak power demand and meet high power requirements such as starting and rapid acceleration, high-power continuous acceleration, or extinguishing a fire while driving; when the power demand is low, only the power battery 22 supplies power, which can reduce the running time of the range extender 21 and reduce fuel consumption and noise.

[0056] In some embodiments, as Figure 1 shown, the electric module 1 further includes a second electric drive component 12, which is configured to drive the hydraulic oil pump of the fire truck.

[0057] Optionally, the electric module 1 further includes auxiliary electrical appliances 13.

[0058] When the fire truck of this embodiment has a high power demand for the second electric drive component 12 or the auxiliary electrical appliances 13, both the range extender 21 and the power battery 22 participate in providing power output, which can ensure peak power demand.

[0059] In some embodiments, as Figure 1 shown, the first electric drive assembly 10 includes a front electric drive unit 110 and a rear electric drive unit 120. The front electric drive unit 110 is configured to provide driving force to the front axle 111, and the rear electric drive unit 120 is configured to provide driving force to the through axle 121 and the rear axle 122.

[0060] Specifically, the front axle 111, the through axle 121, and the rear axle 122 are all connected to two wheels, that is, the fire truck can be a 6×6 airport fire truck.

[0061] This embodiment enables the fire truck to adapt to complex terrain, improve its escape capability and driving stability, and optimize its driving performance and scene adaptability by splitting the first electric drive assembly 10 into a front electric drive unit 110 (driving the front axle 111) and a rear electric drive unit 120 (driving the through-axle 121 and the rear axle 122).

[0062] In the related art, fire pumps are all mechanically driven by an engine and a transmission shaft, the fire pumps take power from the chassis, the transmission chain is long, and the transmission efficiency is low.

[0063] To solve the above problems, the present disclosure provides a fire truck, such as Figures 2 to 6 As shown, a hybrid power system for a fire truck includes the above-mentioned embodiment, the fire truck includes a fire water pump 4, the fire water pump 4 includes a water pump impeller 40 and a first electric drive component 11, the output shaft 100 of the first electric drive component 11 is greater than a preset length, and the water pump impeller 40 is directly connected to the output shaft 100 to form an electric-driven integrated pump.

[0064] The fire truck of this embodiment lengthens the motor shaft that drives the fire water pump 4, and the water pump impeller 40 can be directly connected to the motor output shaft 100 to form an electric-driven integrated pump, which can reduce the layout space size of the fire water pump 4, while optimizing the transmission chain and improving the transmission efficiency; the high-efficiency and large-flow integrated fire water pump 4 is driven by a motor, and the electric drive can solve the problem of changing flow demand during firefighting work without relying on the engine speed to change at any time to provide power, thereby saving energy and reducing emissions.

[0065] In the related technology, the left and right swing and up and down pitch of the roof gun are controlled by a worm gear motor, and the pitch of the piercing mechanism is controlled by a swing motor. The follow-up control of the front gun and the piercing mechanism is complicated, resulting in a small swing range of the roof gun during the pitch process, limiting the fire extinguishing efficiency.

[0066] In some embodiments, Figure 6 As shown, the fire truck also includes a roof gun 101 connected to the arm 5 and a first hydraulic rotary reducer 51, the first hydraulic rotary reducer 51 is configured to drive the roof gun 101 to pitch and the pitch angle range of the roof gun 101 from the horizontal state includes -90° to 90°.

[0067] Specifically, the arm 5 is connected to the vehicle body through the turntable 9 , and the roof gun 101 is connected to the free end of the arm 5 .

[0068] In addition to its own horizontal swing and pitch, the roof gun 101 of this embodiment can also be driven by the first hydraulic rotary reducer 51 to additionally drive the roof gun 101 to pitch so as to expand the coverage of firefighting work, work without blind spots, improve firefighting efficiency, and achieve rapid rescue.

[0069] In some embodiments, Figures 2 to 6As shown, the fire truck further includes a piercing system 6 connected to the boom 5. The piercing system 6 includes a piercing gun 102 and a hydraulic cylinder 60 provided with an accumulator. The piercing gun 102 is configured to penetrate obstacles and spray fire extinguishing agent. The hydraulic cylinder 60 is configured to drive the piercing gun 102 to extend and retract. The accumulator is configured to instantaneously release energy to drive the piercing gun 102 to eject and extend. The piercing gun 102 is provided with a nozzle for spraying fire extinguishing agent, and the piercing gun 102 is configured to spray fire extinguishing agent only when it is in the extended state.

[0070] Specifically, the piercing system is also connected to the free end of the boom 5. The roof gun 101 and the piercing gun 102 are spaced apart both horizontally and vertically. Specifically, the piercing gun 102 is also referred to as a stylet and can pierce obstacles such as the cabin wall of an aircraft. Specifically, when the roof gun 101 and the piercing gun 102 operate, a follow-up pilot operation control is performed, that is, when one party works, the other party is controlled in advance to have an action first to avoid mutual interference and influence.

[0071] This embodiment can improve the fire truck's ability to quickly break through obstacles and accurately extinguish fires by integrating the piercing system 6; the piercing gun 102 sprays fire extinguishing agent only when it is in the extended state, which can avoid mis-triggering or waste of fire extinguishing agent; the roof gun 101 and the piercing system 6 are controlled by electro-hydraulic integration for follow-up, with high reliability.

[0072] In some embodiments, as Figure 6 shown, the piercing system 6 further includes a second hydraulic slewing reducer 52. The second hydraulic slewing reducer 52 is configured to drive the piercing gun 102 to perform pitching motion, and the pitching angle range of the piercing gun 102 from the horizontal state includes -90° to 90°.

[0073] The second hydraulic slewing reducer 52 in this embodiment can additionally drive the piercing gun 102 to perform pitching motion to expand the fire fighting coverage range, work without dead angles, improve the fire fighting work efficiency, and achieve rapid rescue.

[0074] In some embodiments, as Figure 2 shown, the fire truck further includes a display 7 and a fire extinguishing agent delivery system 8. The display 7 is configured to receive user input. The fire extinguishing agent delivery system 8 includes:

[0075] A liquid storage container 81, including a first container and a second container. The first container is used to store water, and the second container is used to store foam;

[0076] A powder storage container 82 and a gas storage container 83. The powder storage container 82 is used to store dry powder, and the gas storage container 83 is used to store nitrogen. The powder storage container 82 and the gas storage container 83 are connected by an air pipe and controlled by a valve group; and

[0077] The fire extinguishing agent spraying terminal is connected to the liquid storage container 81 through the liquid delivery pipeline 86 and / or connected to the dry powder storage container 82 through the dry powder delivery pipeline 84. The fire extinguishing agent spraying terminal is configured to spray a fire extinguishing agent, and the fire extinguishing agent includes at least one of water, foam, and dry powder. The fire extinguishing agent spraying terminal includes at least one of a piercing gun 102, a roof gun 101, a front gun 103, a water reel 104, a dry powder reel 105, an upper vehicle sprinkler nozzle 106, and a lower vehicle sprinkler nozzle 107;

[0078] Wherein, the controller is configured to control the operating state of the fire extinguishing agent delivery system 8 based on user input, and the operating state includes at least one of the fire extinguisher spraying terminal spraying the fire extinguishing agent, the fire extinguishing agent spraying terminal stopping spraying the fire extinguishing agent, the fire extinguishing agent delivery system 8 self-cleaning, and discharging the residual fire extinguishing agent.

[0079] Specifically, the liquid delivery pipeline 86 is connected to the liquid outlet of the liquid storage container 81, and the dry powder delivery pipeline 84 is connected to the powder outlet of the dry powder storage container 82. Specifically, monitors 7 are provided both inside and outside the cab of the fire truck to facilitate fire fighting operations by firefighters during driving and parking. When the fire truck is operating statically, it sucks water from an external water source for fire fighting. It can connect to a fire hydrant or suck water from a water tank. At this time, the fire truck functions as a water pump. Specifically, the upper vehicle sprinkler nozzle 106 and the lower vehicle sprinkler nozzle 107 can be used for the self-protection of the fire truck.

[0080] Optionally, the liquid storage container 81 can be a liquid storage tank body, etc., the dry powder storage container 82 can be a dry powder tank, etc., and the gas storage container 83 can be a nitrogen cylinder, etc.

[0081] The fire truck of this embodiment can, through the integration of multiple types of fire extinguishing agents and intelligent interactive control, achieve one-key intelligent start-stop and rapid switching of water, foam, and dry powder according to different fire scenarios, perform efficient and intelligent fire fighting, and improve the adaptability of the fire truck to fire fighting scenarios and operation efficiency; users input instructions through the monitor 7, and the controller automatically executes spraying start-stop, pipeline self-cleaning, and residual agent discharge, which can reduce operation delay and reduce the risk of misoperation, avoid fire extinguishing agent residue, and extend the pipeline life.

[0082] In some embodiments, the monitor 7 can adjust the flow rate of the fire extinguishing agent spraying terminal and the foam mixing ratio. In addition to controlling the swing and pitch of the gun, the fire fighting gun handle and remote control can also control the water outlet mode (direct current / spray) and flow rate of the gun. The piercing system 6, the boom 5, and the roof gun 101 are integrated into a composite handle for operation. The piercing system and the roof gun are controlled by a hydraulic slewing reducer for follow-up logic control. On the basis of the roof gun's own horizontal swing of 350° and pitch angle from -45° to +90°, a hydraulic slewing reducer is added to increase the working range and improve the fire fighting efficiency.

[0083] Specifically, the fire truck adopts bus control. Through the dual-control operation panel display 7 in the cab and the pump room (located between the cab and the liquid storage container 81), it is possible to suck water from natural water sources, output pressurized water flow for fire fighting, or inject water and foam into the liquid storage container 81. An automatic foam mixing system is adopted, and the mixing ratio can be adjusted within 1-10%, meeting the requirements of 3% and 6% aqueous film-forming foam mixing. The actions of the roof gun and the boom are integrated with a composite handle and the operation panel display 7 to control the rotation of the boom 5 around the turntable 9, as well as the telescopic and luffing actions of the boom 5.

[0084] In some embodiments, the user input includes a first execution instruction with water as the extinguishing agent and a first termination instruction. The controller is configured to sequentially open the water suction control valve, the fire pump 4, and the electronically controlled flow valve upon receiving the first execution instruction, so that the extinguishing agent spraying terminal sprays water. The electronically controlled flow valve is configured to control the water output flow of the extinguishing agent spraying terminal; the controller is further configured to sequentially close the electronically controlled flow valve, the fire pump 4, and the water suction control valve upon receiving the first termination instruction, so that the extinguishing agent spraying terminal stops spraying water.

[0085] Optionally, the control valve can be a butterfly valve or the like. Optionally, indicator lights can be set on the display 7, which are constantly on when executing instructions and extinguished when terminating instructions.

[0086] In some embodiments, the user input includes a second execution instruction with foam as the extinguishing agent and a second termination instruction. The controller is configured to open the foam control valve group upon sequentially receiving the first execution instruction and the second execution instruction. The controller is further configured to close the foam valve group upon receiving the second termination instruction.

[0087] In some embodiments, the controller is configured to adjust the foam ratio based on user input.

[0088] In some embodiments, the user input includes a foam cleaning instruction. The controller is configured to open the foam flushing control valve upon receiving the foam cleaning instruction.

[0089] In some embodiments, the user input includes a residual water discharging instruction. The controller is configured to open the drain control valve and the electronically controlled flow valve upon receiving the residual water discharging instruction.

[0090] The residual water discharging instruction in this embodiment can reduce the corrosion of the pipeline caused by residual water, and at the same time avoid the influence of the pipeline strength in the case of low-temperature ice expansion of the residual water.

[0091] In some embodiments, the user input includes a third execution instruction with dry powder as the fire extinguishing agent and a third termination instruction. The controller is configured to sequentially open the dry powder high-pressure control valve, open the dry powder intake control valve, and adjust the switching valve 85 forward when receiving the third execution instruction. The switching valve 85 is configured to block the liquid delivery pipeline 86 and conduct the dry powder delivery pipeline 84 when switching the pipeline forward, so that the fire extinguishing agent injection terminal injects dry powder. The controller is further configured to sequentially adjust the switching valve 85 backward, close the dry powder intake control valve, and close the dry powder high-pressure control valve when receiving the third termination instruction.

[0092] Optionally, the switching valve 85 can be a three-way ball valve. For example, the three-way ball valve includes three states: closed, liquid outlet of the roof gun 101, and liquid outlet of the piercing gun 102. The default state of the three-way ball valve is to connect to the roof gun pipeline, which can be switched to the piercing gun pipeline, and can also block the liquid delivery pipeline 86 to discharge powder when closed. The dry powder delivery pipeline 84 supplies powder to the piercing gun 102 alone.

[0093] In some embodiments, the user input includes a dry powder cleaning instruction. The controller is configured to open the purge control valve when receiving the dry powder cleaning instruction.

[0094] In some embodiments, the user input includes a residual gas release instruction. The controller is configured to open the exhaust control valve of the powder storage container 82 and the residual gas control valve of the dry powder delivery pipeline 84 when receiving the residual gas release instruction.

[0095] The residual gas release in this embodiment can prevent the dry powder from backspraying and blocking the valve after the valve is opened due to the gas in the dry powder tank; at the same time, it can prevent the inability to inflate again due to the air pressure in the pipeline.

[0096] In some specific embodiments, the front gun 103 and the roof gun 101 of the fire truck can both discharge water and foam, the water reel 104 only discharges water, the dry powder reel 105 only discharges dry powder, and the piercing gun 102 can discharge water, foam, and dry powder. The one-key operation function of the fire truck is described as follows:

[0097] (1) One-key water injection: Without any manual butterfly valve operation, press the one-key water injection button. Sequentially open the water tank suction butterfly valve, increase the speed of the fire pump to the rated speed, open the electronic control flow valve of the front gun (to control the water outlet flow of the front gun), and at the same time, the right lower indicator light is lit. Press again, and sequentially close the electronic control flow valve of the front gun, the fire pump, and the water tank suction butterfly valve, and at the same time, the right lower indicator light is extinguished.

[0098] (2) One - key Foam: On the premise of pressing the one - key water outlet, press the one - key foam. In sequence, open the pressure water ball valve of the foam system (controlling the mixing ratio of foam and water), the liquid suction ball valve of the foam system, the foam flow control valve and other valve groups of the foam system. The lower - right indicator light lights up. At this time, pressing the foam + / - can control the foam ratio. Press again to close the valve group of the foam system, and at the same time the lower - right indicator light goes out.

[0099] (3) One - key Cleaning: On the premise of pressing the one - key water injection and the one - key foam, press the one - key cleaning to open the flushing ball valve of the foam system, and close the liquid suction ball valve of the foam system, the foam flow control valve, the external liquid suction ball valve of the foam system (if it is open). At the same time, the lower - right indicator light lights up. Press again to close the flushing ball valve of the foam system, and at the same time the lower - right indicator light goes out.

[0100] (4) One - key Draining of Residual Water: Press the draining of residual water to open the water pump drainage ball valve, the electric control flow valve of the front gun, and the electric control flow valve of the roof gun. At the same time, the lower - right indicator light lights up. Press again to close the water pump drainage ball valve, the electric control flow valve of the front gun, and the electric control flow valve of the roof gun. At the same time, the lower - right indicator light goes out.

[0101] (5) One - key Whole - vehicle Spraying: On the premise of no operation of any manual butterfly valve, press the one - key whole - vehicle spraying. In sequence, open the water tank water - suction butterfly valve, the fire pump runs at medium speed, and open the spraying ball valve. At the same time, the lower - right indicator light lights up. Press again, and in sequence, close the spraying ball valve, the fire pump, and the water tank water - suction butterfly valve. At the same time, the lower - right indicator light goes out.

[0102] (6) One - key Dry Powder: On the premise of no operation of any manual butterfly valve, press the one - key dry powder. In sequence, open the dry - powder high - pressure ball valve and the dry - powder inlet air ball valve. At the same time, the lower - right indicator light lights up. The nitrogen in the nitrogen cylinder enters the dry - powder tank. After a certain delay time, open the boom needle dry - powder ball valve. The three - way ball valve on the boom blocks the water pipeline, and the dry powder is sprayed out from the needle through the pipeline. Press again, and in sequence, close the dry - powder high - pressure ball valve, the dry - powder inlet air ball valve, and the boom needle dry - powder ball valve. At the same time, the lower - right indicator light goes out.

[0103] (7) One - key Purge: On the premise that the dry - powder inlet air ball valve, the boom needle dry - powder ball valve and the reel ball valve are closed, press the one - key purge to open the boom needle dry - powder purge ball valve and the reel purge dry - powder ball valve. The lower - right indicator light lights up. Press again to close the boom needle dry - powder purge ball valve and the reel purge dry - powder ball valve. At the same time, the lower - right indicator light goes out.

[0104] (8) One - key Air Release: On the premise that the other ball valves of the dry - powder system are not open and the purge is completed, press the one - key air release to open the dry - powder tank exhaust ball valve and the dry - powder pipeline residual - water release ball valve. At the same time, the lower - right indicator light lights up. Press again to close the dry - powder tank exhaust ball valve and the dry - powder pipeline residual - water release ball valve. At the same time, the lower - right indicator light goes out.

[0105] The above operation describes the one-key function of the front-mounted gun 103 and the piercing gun 102 to discharge powder. Similarly, the one-key function of the roof-mounted gun 101, the water reel 104 and the piercing gun 102 to discharge water / foam can be achieved. When the piercing gun 102 discharges water / foam, it is required that the three-way ball valve reverses the water discharge direction. Similarly, the dry powder reel 105 has the same logic as the one-key dry powder of the above-mentioned piercing gun 102, which will not be elaborated here.

[0106] The above has introduced in detail a fire truck hybrid power system and a fire truck provided by the present disclosure. Specific embodiments are used in this article to elaborate on the principles and implementation manners of the present disclosure. The description of the above embodiments is only used to help understand the method and its core idea of the present disclosure. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principles of the present disclosure, several improvements and modifications can still be made to the present disclosure, and these improvements and modifications also fall within the protection scope of the claims of the present disclosure.

Claims

1. A hybrid power system for a fire truck, characterized in that, Comprising: An electric power consumption module (1), including a first electric drive assembly (10) and a first electric drive component (11), the first electric drive assembly (10) being configured to drive the chassis to travel, and the first electric drive component (11) being configured to drive the superstructure for fire fighting operations; A power supply module (2), configured to supply electric energy to the electric power consumption module (1), the power supply module (2) including a range extender (21) and a power battery (22), the range extender (21) being configured to supply electric energy to the power battery (22); A high-voltage distribution unit (3), connected between the power supply module (2) and the electric power consumption module (1), the high-voltage distribution unit (3) being configured to distribute the electric energy from the power supply module (2) to the electric power consumption module (1); and A controller, configured to, when the total vehicle power demand of the fire truck is greater than a preset power, enable both the range extender (21) and the power battery (22) to directly supply electric energy to the electric power consumption module (1), and when the total vehicle power demand of the fire truck is not greater than the preset power, only enable the power battery (22) to directly supply electric energy to the electric power consumption module (1).

2. The fire truck hybrid power system according to claim 1, wherein The electric power consumption module (1) further includes a second electric drive component (12), the second electric drive component (12) being configured to drive the hydraulic oil pump of the fire truck.

3. The fire truck hybrid power system according to claim 1, characterized in that, The first electric drive assembly (10) includes a front electric drive unit (110) and a rear electric drive unit (120), the front electric drive unit (110) being configured to provide driving force to the front axle (111), and the rear electric drive unit (120) being configured to provide driving force to the through axle (121) and the rear axle (122).

4. A fire truck, characterized in that, Including the hybrid power system of the fire truck according to any one of claims 1 to 3, the fire truck includes a fire pump (4), the fire pump (4) includes a pump impeller (40) and the first electric drive component (11), the output shaft (100) of the first electric drive component (11) is greater than a preset length, and the pump impeller (40) is directly connected to the output shaft (100) to form an electric drive integrated pump.

5. The fire truck according to claim 4, characterized in that, The fire truck further includes a roof gun (101) connected to the boom (5) and a first hydraulic slewing reducer (51), the first hydraulic slewing reducer (51) being configured to drive the roof gun (101) to pitch, and the pitch angle range of the roof gun (101) from the horizontal state includes -90° to 90°.

6. The fire truck according to claim 4, wherein, The fire truck further includes a puncture system (6) connected to the boom (5), the puncture system (6) includes a puncture gun (102) and a hydraulic cylinder (60) provided with an accumulator, the puncture gun (102) being configured to penetrate an obstacle and spray a fire extinguishing agent, the hydraulic cylinder (60) being configured to drive the puncture gun (102) to extend and retract, the accumulator being configured to instantaneously release energy to drive the puncture gun (102) to eject and extend, and the puncture gun (102) is provided with a nozzle for spraying the fire extinguishing agent and the puncture gun (102) is configured to spray the fire extinguishing agent only when in the extended state.

7. The fire truck according to claim 6, characterized in that, The puncture system (6) further includes a second hydraulic slewing reducer (52), which is configured to drive the puncture gun (102) to pitch, and the pitching angle range of the puncture gun (102) from the horizontal state includes -90° to 90°.

8. The fire truck according to any one of claims 4 to 7, characterized in that, It further includes a display (7) and a fire extinguishing agent delivery system (8). The display (7) is configured to receive user input. The fire extinguishing agent delivery system (8) includes: A liquid storage container (81), including a first container and a second container. The first container is used to store water, and the second container is used to store foam; A powder storage container (82) and a gas storage container (83). The powder storage container (82) is used to store dry powder, and the gas storage container (83) is used to store nitrogen. The powder storage container (82) and the gas storage container (83) are connected by a gas pipe and controlled by a valve group; and A fire extinguishing agent injection terminal, which is connected to the liquid storage container (81) through a liquid delivery pipeline (86) and / or connected to the powder storage container (82) through a dry powder delivery pipeline (84). The fire extinguishing agent injection terminal is configured to inject a fire extinguishing agent. The fire extinguishing agent includes at least one of water, foam, and dry powder. The fire extinguishing agent injection terminal includes at least one of a puncture gun (102), a roof gun (101), a front vehicle gun (103), a water reel (104), a dry powder reel (105), an upper vehicle spray nozzle (106), and a lower vehicle spray nozzle (107); Wherein, the controller is configured to control the operating state of the fire extinguishing agent delivery system (8) based on the user input. The operating state includes at least one of the fire extinguishing agent injection terminal injecting the fire extinguishing agent, the fire extinguishing agent injection terminal stopping injecting the fire extinguishing agent, the fire extinguishing agent delivery system (8) self-cleaning, and discharging the residual fire extinguishing agent.

9. The fire truck according to claim 8, characterized in that, The user input includes a first execution instruction and a first termination instruction for the fire extinguishing agent to be water. The controller is configured to sequentially open the water suction control valve, the fire pump (4), and the electronic control flow valve when receiving the first execution instruction, so that the fire extinguishing agent injection terminal sprays water. The electronic control flow valve is configured to control the water flow rate of the fire extinguishing agent injection terminal; the controller is further configured to sequentially close the electronic control flow valve, the fire pump (4), and the water suction control valve when receiving the first termination instruction, so that the fire extinguishing agent injection terminal stops spraying water.

10. The fire truck according to claim 8, characterized in that, The user input includes a second execution instruction and a second termination instruction for the fire extinguishing agent to be foam. The controller is configured to open the foam control valve group when sequentially receiving the first execution instruction and the second execution instruction. The controller is further configured to close the foam valve group when receiving the second termination instruction.

11. The fire truck according to claim 10, characterized in that, The controller is configured to adjust the foam ratio based on the user input.

12. The fire truck according to claim 10, characterized in that, The user input includes a foam cleaning instruction. The controller is configured to open the foam flushing control valve when receiving the foam cleaning instruction.

13. The fire truck according to claim 9, characterized in that, The user input includes a command for discharging residual water, and the controller is configured to open a drain control valve and the electronically controlled flow valve when receiving the command for discharging residual water.

14. The fire truck according to claim 9, characterized in that, The user input includes a third execution command and a third termination command for the fire extinguishing agent being dry powder. The controller is configured to sequentially open a dry powder high-pressure control valve, a dry powder intake control valve, and a forward adjustment switching valve (85) when receiving the third execution command. The switching valve (85) is configured to block the liquid delivery pipeline (86) and conduct the dry powder delivery pipeline (84) when switching the pipeline forward, so that the fire extinguishing agent injection terminal injects dry powder. The controller is further configured to sequentially reversely adjust the switching valve (85), close the dry powder intake control valve, and close the dry powder high-pressure control valve when receiving the third termination command.

15. The fire truck according to claim 14, characterized in that, The user input includes a dry powder cleaning command, and the controller is configured to open a purge control valve when receiving the dry powder cleaning command.

16. The fire truck according to claim 14, characterized in that, The user input includes a command for discharging residual gas, and the controller is configured to open an exhaust control valve of a powder storage container (82) and a residual gas control valve of a dry powder delivery pipeline (84) when receiving the command for discharging residual gas.

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