A fire truck

Abstract

The utility model discloses a fire engine, when executing fire extinguishing task, fire pump can realize various water supply mode through different water outlet pipeline: through second water outlet pipeline, supply high pressure water to fire arm support, drive main fire monitor to carry out high altitude area's fire operation, through third water outlet pipeline, supply water to vice fire monitor, to cover low altitude area, or through fourth water outlet pipeline, connect external water hose, realize to external water supply. This kind of flexible water supply mechanism not only increases the angle and position selection of fire extinguishing operation, also greatly enhances the ability of complex fire scene. In the case of insufficient water tank, fire pump can pump water from external water source (such as river, lake, pool or fire hydrant) through second water inlet pipeline, and the pumped water is supplied through second water outlet pipeline or third water outlet pipeline to realize fire operation, or is reversely transported through first water outlet pipeline and injected into the water tank to realize the water replenishing function of the water tank.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment, and in particular to a fire truck. Background Technology

[0002] A fire truck is a specialized vehicle designed for firefighting, rescue, and emergency response. It is typically equipped with water tanks, fire pumps, fire monitors, and other necessary rescue equipment.

[0003] Utility model patent CN201558434U discloses a multi-functional fire truck, specifically suitable for firefighting, washing, and water spraying. The truck includes firefighting equipment and a water tank. The sprayers on the firefighting equipment are connected to the water tank sequentially via fire inlet pipes and hoses. A washing machine is located near the front of the truck, and a medium-low pressure fire pump for water spraying is located at the rear. It is capable of firefighting, washing, and water spraying. However, it has the following drawback: regardless of the operating conditions, the multi-functional fire truck's water supply mainly relies on the onboard water tank. Once the water in the tank is depleted, the vehicle will be unable to perform any of the aforementioned functions. Utility Model Content

[0004] Therefore, a fire truck is needed to solve the problem that fire trucks mainly rely on onboard water tanks for their water supply, and once the water in the tanks is depleted, the vehicle will be unable to continue its operations.

[0005] To achieve the above objectives, the inventor provides a fire truck, comprising: a chassis, a power mechanism, a fire pump, a water tank, a fire boom, an auxiliary fire monitor, and a main fire monitor;

[0006] The chassis supports the power mechanism, the fire pump, the water tank, the fire boom, and the auxiliary fire monitor.

[0007] The power mechanism provides power to the fire pump;

[0008] The outlet of the fire pump is connected to a water outlet pipe, which includes a first, second, third, and fourth water outlet pipe connected in parallel. The water outlet pipe is connected to the first inlet of the water tank via the first water outlet pipe, to the inlet of the fire boom via the second water outlet pipe, to the inlet of the auxiliary fire monitor via the third water outlet pipe, and is used for external water supply via the fourth water outlet pipe. Valves are provided on the first, second, third, and fourth water outlet pipes. The inlet of the fire pump is connected to an inlet pipe, which includes a first and second inlet pipe connected in parallel. The inlet pipe is connected to the outlet of the water tank via the first inlet pipe, and is used for external water pumping via the second inlet pipe. Valves are provided on the first and second inlet pipes.

[0009] The fire boom can rotate and pitch relative to the chassis, and the main fire monitor is installed on the outlet of the fire boom.

[0010] Furthermore: the water tank is located in the middle of the chassis, the fire pump is located in front of the water tank, the fire boom and the auxiliary fire monitor are located behind the water tank, and the fire boom is centrally located at the rear of the chassis.

[0011] Furthermore, the main path formed by the merging of the first and second water outlet pipes passes through the water tank.

[0012] Furthermore: the main pipeline formed by the merging of the first and second water outlet pipes includes a first section, a second section, and a third section. The front sidewall of the water tank has a first opening, and the rear sidewall of the water pipe has a second opening. The second section is located inside the water tank and extends from the first opening and the second opening, respectively. The first section is located in front of the water tank, and the third section is located behind the water tank. The first section and the second section, as well as the second section and the third section, are connected by flange joints.

[0013] Furthermore: there are two auxiliary fire monitors, which are symmetrically arranged on the left and right sides of the rear of the chassis;

[0014] The auxiliary fire monitor can first control the chassis rotation and pitch.

[0015] Furthermore: the external water inlet of the third water outlet is connected to the first external water outlet, and the first external water outlet is equipped with a valve; and / or,

[0016] The water tank's inlet is connected to a second external pipe, which is equipped with a valve.

[0017] Furthermore: there are two fourth water outlet pipes, which are respectively located on the left and right sides of the chassis;

[0018] There are two second water inlet pipes, which are located on the left and right sides of the chassis.

[0019] Furthermore, it also includes a foam supply mechanism connected to the inlet of the fire pump.

[0020] Furthermore: the foam supply mechanism includes a foam liquid pipeline, a foam inlet pipeline, and a mixing liquid pipeline;

[0021] One end of the foam liquid pipeline and one end of the foam inlet pipeline are respectively connected to one end of the mixed liquid pipeline. The other end of the mixed liquid pipeline is connected to the inlet of the fire pump, and the other end of the foam inlet pipeline is connected to the outlet of the fire pump. The foam liquid pipeline is connected in series with a metering control valve and a switching valve.

[0022] Furthermore: the fire boom includes a support base, a slewing mechanism, a lower support cylinder, an upper water supply pipe, a left water supply pipe, a right water supply pipe, and a lifting mechanism;

[0023] The support base is mounted on the chassis, and the water inlet of the fire boom is mounted on the support base.

[0024] The rotary mechanism is mounted on the support base;

[0025] The lower support cylinder is mounted on the rotary mechanism and rotates with the rotary mechanism. The water inlet at the bottom of the lower support cylinder is connected to the water outlet at the top of the support base.

[0026] The lower support cylinder is located below the upper water supply pipe. The left outlet of the lower support cylinder is connected to the inlet of the left water supply pipe, the outlet of the left water supply pipe is connected to the left inlet of the upper water supply pipe, the right outlet of the lower support cylinder is connected to the inlet of the right water supply pipe, and the outlet of the right water supply pipe is connected to the inlet of the upper water supply pipe.

[0027] The left inlet of the upper water pipe can rotate relative to the outlet of the left water pipe, and the right inlet of the upper water pipe can rotate relative to the outlet of the right water pipe; or, the inlet of the left water pipe can rotate relative to the left outlet of the lower support cylinder, and the inlet of the right water pipe can rotate relative to the right outlet of the lower support cylinder.

[0028] The lifting mechanism is mounted on the slewing mechanism, supports the upper water pipe, and is used to adjust the pitch of the upper water pipe.

[0029] Furthermore: the upper water supply pipe is a multi-stage telescopic pipe.

[0030] Unlike existing technologies, the above technical solution has the following beneficial effects:

[0031] 1. When performing firefighting missions, the fire pump can achieve multiple water supply modes through different outlet pipes: high-pressure water is supplied to the fire boom through the second outlet pipe to drive the main fire monitor for firefighting operations in high-altitude areas; water is supplied to the auxiliary fire monitor through the third outlet pipe to cover low-altitude areas; or water is connected to external hoses through the fourth outlet pipe to supply water to external areas. This flexible water supply mechanism not only increases the angle and location selection for firefighting operations, but also greatly enhances the ability to cope with complex fire scenarios.

[0032] 2. In the event of insufficient water in the tank, the fire pump can draw water from an external water source (such as a river, lake, pool, or fire hydrant) through the second inlet pipe. The drawn water is then supplied to the fire fighting operation through the second or third outlet pipe, or it can be transported in reverse through the first outlet pipe and injected into the water tank to replenish the water in the tank.

[0033] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0034] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this utility model and other related contents, and should not be considered as limitations on this application.

[0035] Figure 1 This is a perspective view of the fire truck in this application;

[0036] Figure 2 This is a partial perspective view of the fire truck from a first-person perspective in this application;

[0037] Figure 3 This is another perspective view of the fire truck from a first-person perspective in this application;

[0038] Figure 4 This is a partial perspective view of the fire truck from a second-person perspective in this application;

[0039] Figure 5 This is another perspective view of the fire truck from a second-person perspective in this application;

[0040] Figure 6 This is a top view of the fire truck in this application;

[0041] Figure 7 This is a schematic diagram of the foam supply organization in this application;

[0042] Figure 8This is a perspective view of the fire boom in this application.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Lower support cylinder; 11. Left outlet; 12. Right outlet;

[0045] 2. Left water supply pipe;

[0046] 3. Right water supply pipe;

[0047] 4. Upper water supply pipe; 41. Outer pipe; 42. Inner pipe; 43. Left water inlet; 44. Right water inlet;

[0048] 5. Main fire monitor;

[0049] 6. Lifting mechanism;

[0050] 7. Slewing mechanism;

[0051] 8. Outlet pipe; 81. First outlet pipe; 82. Second outlet pipe; 83. Third outlet pipe; 84. Fourth outlet pipe; 85. First section; 86. Second section; 87. Third section; 88. Flange joint; 89. Main road;

[0052] 9. Water inlet pipe; 91. First water inlet pipe; 92. Second water inlet pipe;

[0053] 100. Water tank; 1001. Second external connection pipe; 1002. Inspection port;

[0054] 110. Secondary fire monitor; 1101. First external connection pipe;

[0055] 120. Fire pump;

[0056] 130. Support base;

[0057] 140. Foam supply mechanism; 141. Foam liquid pipeline; 142. Foam introduction pipeline; 143. Mixture pipeline; 144. Foam tank; 145. Metering control valve; 146. Switch valve; 147. Venturi tube; 148. Foam bucket;

[0058] 150. Chassis; 1501. Power mechanism. Detailed Implementation

[0059] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0060] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0061] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0062] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0063] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0064] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0065] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0066] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0067] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0068] Please see Figures 1 to 7 This embodiment provides a fire truck, including: chassis 150, power mechanism 1501, fire pump 120, water tank 100, fire boom, auxiliary fire monitor 110 and main fire monitor 5;

[0069] The chassis 150 supports the power mechanism 1501, fire pump 120, water tank 100, fire boom and auxiliary fire monitor 110;

[0070] Power unit 1501 provides power to fire pump 120;

[0071] The outlet of the fire pump 120 is connected to the outlet pipe 8. The outlet pipe 8 includes a first outlet pipe 81, a second outlet pipe 82, a third outlet pipe 83, and a fourth outlet pipe 84 connected in parallel. The outlet pipe is connected to the first tank inlet of the water tank 100 through the first outlet pipe 81, to the inlet of the fire boom through the second outlet pipe 82, to the inlet of the auxiliary fire monitor 110 through the third outlet pipe 83, and to supply water to the outside through the fourth outlet pipe 84. Valves are provided on the first outlet pipe 81, the second outlet pipe 82, the third outlet pipe 83, and the fourth outlet pipe 84. The inlet of the fire pump 120 is connected to the inlet pipe 9. The inlet pipe 9 includes a first inlet pipe 91 and a second inlet pipe 92 connected in parallel. The inlet pipe is connected to the outlet of the water tank 100 through the first inlet pipe 91, and draws water from the outside through the second inlet pipe 92. Valves are provided on the first inlet pipe 91 and the second inlet pipe 92.

[0072] The fire boom can rotate and pitch 150 degrees relative to the chassis, and the main fire monitor 5 is installed on the outlet of the fire boom.

[0073] It should be noted that the first water outlet pipe 81, the second water outlet pipe 82, the third water outlet pipe 83, the fourth water outlet pipe 84, the first water inlet pipe 91 and the second water inlet pipe 92 are all equipped with valves to control the opening and closing of each pipe and the direction of water flow; these valves are not single components, but multiple independently set control elements, which are installed on the corresponding pipes respectively.

[0074] The above technical solution has the following beneficial effects:

[0075] 1. When performing firefighting tasks, the fire pump 120 can achieve multiple water supply modes through different outlet pipes: high-pressure water is supplied to the fire boom through the second outlet pipe 82 to drive the main fire monitor 5 for firefighting operations in high-altitude areas; water is supplied to the auxiliary fire monitor 110 through the third outlet pipe 83 to cover low-altitude areas; or water is connected to external hoses through the fourth outlet pipe 84 to supply water to external areas. This flexible water supply mechanism not only increases the angle and location selection for firefighting operations, but also greatly enhances the ability to cope with complex fire scenarios.

[0076] 2. In the event of insufficient water in the water tank 100, the fire pump 120 can draw water from an external water source (such as a river, lake, pool or fire hydrant) through the second inlet pipe 92. The water drawn out can be supplied to the fire fighting operation through the second outlet pipe 82 or the third outlet pipe 83, or it can be transported in reverse through the first outlet pipe 81 and injected into the water tank 100 to replenish the water in the water tank 100.

[0077] Please see Figures 1 to 6In some embodiments, the water tank 100 is located in the middle of the chassis 150, the fire pump 120 is located in front of the water tank 100, and the fire boom and auxiliary fire monitor 110 are located behind the water tank 100. The fire boom is centrally located at the rear of the chassis 150. This arrangement helps to balance the overall weight distribution of the vehicle and improve driving stability and safety.

[0078] Please see Figure 1 , Figure 2 , Figure 5 and Figure 6 In some embodiments, the main path 89 formed by the merging of the first outlet pipe 81 and the second outlet pipe 82 passes through the water tank 100. This makes full use of the structural space of the water tank 100, making the overall pipe layout more compact and reasonable. The structure of the water tank 100 can also be used to provide additional support, thereby effectively stabilizing the relatively long second outlet pipe 82 and third outlet pipe 83.

[0079] Please see Figure 1 , Figure 2 , Figure 5 and Figure 6 In some embodiments, the main pipeline 89 formed by the merging of the first outlet pipe 81 and the second outlet pipe 82 includes a first section 85, a second section 86, and a third section 87. The front sidewall of the water tank 100 has a first opening, and the rear sidewall of the water tank 100 has a second opening. The first section 85 is located in front of the water tank 100 and is connected to the first opening via a flange joint 88. The second section 86 is located inside the water tank 100 and extends from both the first and second openings. The first section 85 is located in front of the water tank 100, and the third section 87 is located behind the water tank 100. The first section 85 and the second section 86, as well as the second section 86 and the third section 87, are connected via flange joints 88. One end of the first section 85 is connected to the second section 86 via a flange joint 88, and the other end of the second section 86 is also connected to the third section 87 via a flange joint 88. This segmented design and the use of flange joints simplify the installation process and reduce maintenance difficulty. When a section of the pipeline malfunctions, only that section needs to be replaced.

[0080] A flange joint 88 is a standard interface component used to connect pipes, typically consisting of a pair of flanges (i.e., two parallel discs), a gasket, and bolts. The flange joint 88 tightly connects the two flanges together with bolts and uses a gasket to ensure a seal and prevent fluid leakage. It should be noted that this application uses multiple flange joints 88, differing primarily in their installation locations, and not in connecting multiple pipe sections using a single flange joint 88.

[0081] In some embodiments, the fire pump 120 has only one main outlet, which is connected to a branch structure (such as a multi-way fitting or a distribution valve) via a flange joint, from which a first outlet pipe, a second outlet pipe, a third outlet pipe, and a fourth outlet pipe are branched out, such as... Figure 2 , Figure 5 and Figure 6 As shown in the diagram. In other embodiments, the fire pump itself is designed with four independent outlets, each of which is directly connected to a dedicated pipeline via a flange joint. The inlet pipeline is similarly designed and will not be described in detail here.

[0082] Please see Figure 3 , Figure 4 and Figure 6 In some embodiments, there are two secondary fire monitors 110, which are symmetrically arranged on the left and right sides of the rear of the chassis 150. This arrangement allows the water jet to form a wider coverage area at the rear of the vehicle, which helps to improve fire extinguishing efficiency.

[0083] In some embodiments, the secondary fire monitor 110 can rotate and pitch relative to the chassis 150. The secondary fire monitor 110 is equipped with a rotating structure and a lifting structure, the rotating structure allowing it to rotate at multiple angles in the horizontal direction, and the lifting structure allowing it to adjust its angle up and down in the vertical direction.

[0084] Please see Figure 3 and Figure 4 In some embodiments, the external water inlet of the third water outlet pipe 83 is connected to the first external pipe 1101, and the first external pipe 1101 is equipped with a valve. When it is necessary to provide water to the auxiliary fire monitor 110, a water hose and a water pump can be connected to the first external pipe 1101, and the valve can be opened to allow external water to flow through the first external pipe 1101 and the third water outlet pipe 83 to supply water to the auxiliary fire monitor 110.

[0085] Please see Figure 2 , Figure 5 and Figure 6 In some embodiments, there are two fourth water outlet pipes 84, located on the left and right sides of the chassis 150 respectively, which can be used for external water supply from different directions. The port of the fourth water outlet pipe 84 furthest from the fire pump 120 serves as the water outlet, extending to the edge of the chassis 150 for convenient water intake. The dual-sided water supply design allows the fire truck to respond more flexibly to complex fire scenarios. For example, in the case of multiple fire sources, water can be supplied to different areas simultaneously through the fourth water outlet pipes on both sides, improving fire extinguishing efficiency.

[0086] Please see Figure 2 , Figure 5 and Figure 6In some embodiments, there are two second water inlet pipes 92, located on the left and right sides of the chassis 150 respectively. This dual-side water inlet design ensures that even if the water source in one direction is insufficient, the water source in the other direction can continue to be supplied, thereby significantly improving the efficiency and reliability of water intake. With this layout, the fire truck can obtain water sources more flexibly in complex environments, ensuring a continuous and efficient water supply capacity.

[0087] Please see Figure 2 and Figure 5 In some embodiments, the external water inlet of the water tank 100 is connected to a second external pipe 1001, and a valve is provided on the second external pipe 1001. When it is necessary to provide water to the water tank 100, a water hose and a water pump can be connected to the second external pipe 1001, and the valve can be opened to allow external water to flow through the second external pipe 1001 to supply water to the water tank 100.

[0088] Please see Figures 2 to 6 In some embodiments, the fourth water outlet pipe 84, the second external pipe 1001, and the first external pipe 1101 all extend downwards from above the chassis 150 to below the chassis 150; while the second water inlet pipe 92 and the first water inlet pipe 91 are located on the upper part of the chassis 150. This layout makes reasonable use of the vehicle's vertical space and facilitates the centralized installation and maintenance of pipes.

[0089] Please see Figure 1 and Figure 8 In some embodiments, the fire boom includes a support base 130, a slewing mechanism 7, a lower support cylinder 1, an upper water pipe 4, a left water pipe 2, a right water pipe 3, and a lifting mechanism 6; the support base 130 is mounted on a chassis 150, and the water inlet of the fire boom is located on the support base 130; the slewing mechanism 7 is mounted on the support base 130; the lower support cylinder 1 is mounted on the slewing mechanism 7, and rotates with the slewing mechanism 7; the water inlet at the bottom of the lower support cylinder 1 is connected to the water outlet at the top of the support base 130; the lower support cylinder 1 is located below the upper water pipe 4, and the left water outlet 11 of the lower support cylinder 1 is connected to the water inlet of the left water pipe 2; the left water pipe 2... The outlet is connected to the left inlet 43 of the upper water pipe 4, the right outlet 12 of the lower support cylinder 1 is connected to the inlet of the right water pipe 3, and the outlet of the right water pipe 3 is connected to the inlet of the upper water pipe 4; the left inlet 43 of the upper water pipe 4 can rotate relative to the outlet of the left water pipe 2, and the right inlet 44 of the upper water pipe 4 can rotate relative to the outlet of the right water pipe 3; or, the inlet of the left water pipe 2 can rotate relative to the left outlet 11 of the lower support cylinder 1, and the inlet of the right water pipe 3 can rotate relative to the right outlet 12 of the lower support cylinder 1; the lifting mechanism 6 is mounted on the slewing mechanism 7, supports the upper water pipe 4, and is used to adjust the pitch of the upper water pipe 4.

[0090] The upper water supply pipe 4 is located at the top, while the left water supply pipe 2 and the right water supply pipe 3 are located in the middle, arranged symmetrically. The lower support cylinder 1 is located at the bottom. Water flows from an external water source into the inlet of the lower support cylinder 1. Since the lower support cylinder 1 has two outlets, one flows out from the left outlet 11 and into the inlet of the left water supply pipe 2, and the other flows out from the right outlet 12 and into the inlet of the right water supply pipe 3. The water flows through the left water supply pipe 2 and the right water supply pipe 3 to the left inlet 43 and the right inlet 44 of the upper water supply pipe 4, respectively, and then flows into the interior of the upper water supply pipe 4. Finally, the water flows through the upper water supply pipe 4 to the fire monitor at its far end for fire extinguishing operations.

[0091] The left water pipe 2 and the right water pipe 3 are symmetrically arranged on both sides (left and right sides) of the upper water pipe 4. This symmetrical double pipe structure evenly distributes the support force that might have been concentrated on one side to the left and right sides of the boom, resulting in higher support strength and reducing the probability of structural deformation.

[0092] It should be noted that, in one embodiment, the left inlet 43 of the upper water pipe 4 and the outlet of the left water pipe 2 are rotatably connected, allowing the upper water pipe 4 to rotate relative to the left water pipe 2 within a certain angle range; similarly, the right inlet 44 of the upper water pipe 4 and the outlet of the right water pipe 3 are also rotatably connected. The lifting mechanism 6 pushes the upper water pipe 4 to swing up and down around the axis of rotation formed by its rotatable connection with the left water pipe 2 and the right water pipe 3, thereby adjusting the spray angle of the fire monitor. In another embodiment, the inlet of the left water pipe 2 and the left outlet 11 of the lower support cylinder 1, and the inlet of the right water pipe 3 and the right outlet 12 of the lower support cylinder 1 are rotatably connected.

[0093] Please see Figure 1 and Figure 8 In some embodiments, the upper water supply pipe 4 is a multi-stage telescopic pipe. A multi-stage telescopic pipe is a component composed of multiple nested pipes, typically including an outer pipe 41 and an inner pipe 42. The aforementioned left inlet 43 and right inlet 44 are located at the end of the outer pipe 41 furthest from the inner pipe 42. Each pipe can slide and extend layer by layer to adapt to different operating height or distance requirements. For ease of description, this document only uses a two-stage structure including the outer pipe 41 and inner pipe 42 as an example, but this does not mean that the multi-stage telescopic pipe is limited to two stages. In fact, depending on the actual application scenario and performance requirements, this structure can be expanded into a three-stage, four-stage, five-stage, or even more-stage telescopic pipe, all of which fall within the protection scope and technical concept of this application.

[0094] In some embodiments, the lifting mechanism 6 is typically a lifting telescopic rod, one end of which can be connected to the upper water supply pipe 4 (such as the outer pipe 41), and the other end is connected to the rotation mechanism 7, for adjusting the pitch of the upper water supply pipe 4 (such as the outer pipe 41).

[0095] In some embodiments, the slewing mechanism 7 includes a slewing bearing and a slewing drive device (such as a geared motor, hydraulic motor, etc.). The slewing bearing supports the lifting mechanism 6 and the lower support cylinder 1, enabling the boom to rotate in the horizontal plane and achieve multi-directional operation coverage.

[0096] Please see Figure 1 In some embodiments, the power unit 1501 is an engine on the chassis 150, which provides mechanical power to the fire pump 120 via a transmission assembly. In other embodiments, the fire pump 120 is electrically driven, and the power unit is an on-board power supply mechanism, such as a battery pack or generator, which drives the fire pump 120 to operate electrically.

[0097] Please see Figure 7 In some embodiments, the fire truck also includes a foam supply mechanism 140, which is connected to a fire pump 120. When foam extinguishing is required, the operator activates the foam supply mechanism, and the high-pressure water jet mixes thoroughly with the foam liquid to form a foam mixture for use by the fire truck.

[0098] Please see Figure 7 In some embodiments, the foam supply mechanism 140 includes a foam liquid pipeline 141, a foam inlet pipeline 142, and a mixing liquid pipeline 143. One end of the foam liquid pipeline 141 and one end of the foam inlet pipeline 142 are respectively connected to one end of the mixing liquid pipeline 143. The other end of the mixing liquid pipeline 143 is connected to the inlet of the fire pump 120, and the other end of the foam inlet pipeline 142 is connected to the outlet of the fire pump 120. The foam liquid pipeline 141 is connected in series with a metering control valve 145 and a switch valve 146. The end of the foam liquid pipeline 141 away from the mixing liquid pipeline 143 can be connected to a foam tank 144 on the chassis 150 and / or a foam bucket 148 provided by the user outside the vehicle. The operator opens the switch valve 146 to connect the foam liquid pipeline 141. The water flow from the foam inlet pipeline 142 and the foam liquid drawn in from the foam liquid pipeline 141 are mixed in the mixing liquid pipeline 143, and then pressurized by the fire pump and sent to the outlet pipeline 8. During this period, the injection volume of foam liquid can be adjusted through the metering control valve.

[0099] Preferably, the mixing pipe 143 is provided with a venturi tube 147, which is a section of pipe with a neck in the middle. The foam liquid is fully mixed in the venturi tube 147 to form a uniform foam mixture.

[0100] Please see Figure 1 and Figure 5 In some embodiments, the water tank 100 is provided with an inspection port 1002, which allows maintenance personnel to enter the water tank 100 for maintenance.

[0101] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A fire fighting vehicle characterized in that, include: Chassis, power unit, fire pump, water tank, fire boom, auxiliary fire monitor and main fire monitor; The chassis supports the power mechanism, the fire pump, the water tank, the fire boom, and the auxiliary fire monitor. The power mechanism provides power to the fire pump; The outlet of the fire pump is connected to a water outlet pipe, which includes a first, second, third, and fourth water outlet pipe connected in parallel. The water outlet pipe is connected to the first inlet of the water tank via the first water outlet pipe, to the inlet of the fire boom via the second water outlet pipe, to the inlet of the auxiliary fire monitor via the third water outlet pipe, and is used for external water supply via the fourth water outlet pipe. Valves are provided on the first, second, third, and fourth water outlet pipes. The inlet of the fire pump is connected to an inlet pipe, which includes a first and second inlet pipe connected in parallel. The inlet pipe is connected to the outlet of the water tank via the first inlet pipe, and is used for external water pumping via the second inlet pipe. Valves are provided on the first and second inlet pipes. The fire boom can rotate and pitch relative to the chassis, and the main fire monitor is installed on the outlet of the fire boom.

2. The fire apparatus of claim 1, wherein: The water tank is located in the middle of the chassis, the fire pump is located in front of the water tank, the fire boom and the auxiliary fire monitor are located behind the water tank, and the fire boom is centrally located at the rear of the chassis.

3. The fire apparatus of claim 2, characterized in that: The main path formed by the merging of the first and second water outlet pipes passes through the water tank.

4. The fire apparatus of claim 3, wherein: The main pipeline formed by the merging of the first and second water outlet pipes includes a first section, a second section, and a third section. The front sidewall of the water tank has a first opening, and the rear sidewall of the water pipe has a second opening. The second section is located inside the water tank and extends from the first opening and the second opening, respectively. The first section is located in front of the water tank, and the third section is located behind the water tank. The first section and the second section, as well as the second section and the third section, are connected by flange joints.

5. The fire apparatus of claim 2, wherein: There are two auxiliary fire monitors, which are symmetrically arranged on the rear of the chassis. The auxiliary fire monitor can first control the chassis rotation and pitch.

6. The fire fighting vehicle according to claim 1 or 2 or 3, characterized in that: The external inlet of the third water outlet pipe is connected to the first external pipe, and the first external pipe is equipped with a valve; and / or The water tank's inlet is connected to a second external pipe, which is equipped with a valve.

7. The fire apparatus of claims 1 or 5, wherein: There are two fourth water outlet pipes, which are respectively located on the left and right sides of the chassis. There are two second water inlet pipes, which are located on the left and right sides of the chassis.

8. The apparatus of claim 1, wherein: It also includes a foam supply mechanism, which is connected to the inlet of the fire pump.

9. The fire apparatus of claim 8, wherein: The foam supply mechanism includes a foam liquid pipeline, a foam inlet pipeline, and a mixture pipeline; One end of the foam liquid pipeline and one end of the foam inlet pipeline are respectively connected to one end of the mixed liquid pipeline. The other end of the mixed liquid pipeline is connected to the inlet of the fire pump, and the other end of the foam inlet pipeline is connected to the outlet of the fire pump. The foam liquid pipeline is connected in series with a metering control valve and a switching valve.

10. The fire truck according to claim 1, characterized in that: The fire boom includes a support base, a slewing mechanism, a lower support cylinder, an upper water supply pipe, a left water supply pipe, a right water supply pipe, and a lifting mechanism; The support base is mounted on the chassis, and the water inlet of the fire boom is mounted on the support base. The rotary mechanism is mounted on the support base; The lower support cylinder is mounted on the rotary mechanism and rotates with the rotary mechanism. The water inlet at the bottom of the lower support cylinder is connected to the water outlet at the top of the support base. The lower support cylinder is located below the upper water supply pipe. The left outlet of the lower support cylinder is connected to the inlet of the left water supply pipe, the outlet of the left water supply pipe is connected to the left inlet of the upper water supply pipe, the right outlet of the lower support cylinder is connected to the inlet of the right water supply pipe, and the outlet of the right water supply pipe is connected to the inlet of the upper water supply pipe. The left inlet of the upper water pipe can rotate relative to the outlet of the left water pipe, and the right inlet of the upper water pipe can rotate relative to the outlet of the right water pipe; or, the inlet of the left water pipe can rotate relative to the left outlet of the lower support cylinder, and the inlet of the right water pipe can rotate relative to the right outlet of the lower support cylinder. The lifting mechanism is mounted on the slewing mechanism, supports the upper water pipe, and is used to adjust the pitch of the upper water pipe.

11. The fire truck according to claim 10, characterized in that: The upper water supply pipe is a multi-stage telescopic pipe.

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