Fire-fighting liquid tank and fire truck

Abstract

A fire-fighting liquid tank (100) and a fire truck (200). The fire-fighting liquid tank comprises: a fixed tank body (110); and a movable tank body (120), which is movably connected to the fixed tank body and, with the fixed tank body, forms a liquid storage cavity (130) by means of enclosure. The movable tank body can move vertically relative to the fixed tank body, so as to change the volume of the liquid storage cavity. By means of the movement of the movable tank body relative to the fixed tank body, the volume of the liquid storage cavity can be changed, such that the volume of a liquid storage tank can be controlled on the basis of actual operational conditions of the fire truck, thereby taking into account the optimization of two technical parameters, i.e., the working height of a boom system, and a liquid capacity, and satisfying the dual advantages of high liquid carrying under high booms.

Description

Firefighting liquid tanks and fire trucks

[0001] This application claims priority to Chinese Patent Application No. 202411035977.7, filed on July 31, 2024, entitled "Fire Fighting Liquid Tank and Fire Truck", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of fire-fighting equipment technology, and more specifically, to a fire-fighting liquid tank and a fire truck. Background Technology

[0003] Currently, high-pressure water jet fire trucks in related technologies generally integrate a boom and a liquid tank. Understandably, the longer the boom, the higher its working height. Due to the limitations of the overall vehicle layout, to achieve a higher boom working height, the liquid tank's capacity must be sacrificed; conversely, to achieve a larger liquid tank capacity, the boom's working height must be sacrificed. In other words, it is impossible to simultaneously optimize both the boom's working height and the vehicle's liquid capacity. Summary of the Invention

[0004] The embodiments of the present invention are intended to at least solve or improve one of the technical problems existing in the prior art.

[0005] Therefore, a first aspect of the embodiments of the present invention provides a fire-fighting liquid tank.

[0006] A second aspect of the present invention provides a fire truck.

[0007] In view of this, according to a first aspect of the present invention, a fire-fighting liquid tank is provided, the fire-fighting liquid tank comprising: a fixed tank body; and a movable tank body movably connected to the fixed tank body and forming a liquid storage cavity with the fixed tank body, the movable tank body being capable of moving vertically relative to the fixed tank body to change the volume of the liquid storage cavity.

[0008] The fire-fighting liquid tank provided in this embodiment of the invention includes a fixed tank and a movable tank. Specifically, the movable tank and the fixed tank enclose a liquid storage cavity. It can be understood that the liquid storage cavity is used to contain fire-fighting media, such as water, foam liquid, etc.

[0009] The movable tank can move relative to the fixed tank. Optionally, the movable tank is driven by a drive assembly. Alternatively, the movable tank can be manually moved by firefighters. The specific configuration can be adjusted according to actual needs.

[0010] During the movement of the movable tank relative to the fixed tank, the volume of the liquid storage chamber can be changed, thus achieving variable volume. Specifically, when the fire truck equipped with this fire-fighting liquid tank is in a non-combat state, i.e., the movable tank is in the first position (retracted position), the volume of the liquid storage chamber is relatively small. Therefore, while meeting relevant requirements, the length of the fire truck's boom system can be increased as much as possible, thereby increasing the working height of the boom system. This makes fire-fighting operations more convenient and flexible, increases the fire-fighting range, and thus meets the fire-fighting needs in various scenarios.

[0011] When a fire truck is in operational status, the movable tank is moved relative to the fixed tank to a second position (the deployed position) to increase the volume of the liquid storage chamber and thus the liquid capacity. This improves firefighting efficiency and extends operational time, enabling effective fire suppression. Furthermore, the increased volume of the liquid storage chamber increases the chassis mass of the fire truck, effectively preventing tipping during boom deployment and enhancing the stability of the boom system, thereby improving the fire truck's operational safety.

[0012] Understandably, after the firefighting operation is completed, excess extinguishing medium in the storage chamber can be discharged, and the movable tank can be returned to its first position to facilitate the retraction of the fire truck's boom system.

[0013] By moving the movable tank relative to the fixed tank, the volume of the liquid storage chamber can be varied. This allows the volume of the liquid storage tank to be controlled according to the actual combat situation of the fire truck, thereby optimizing both the working height of the boom system and the liquid load capacity, and satisfying the dual advantages of high liquid load under a high boom.

[0014] In addition, the fire-fighting liquid tank provided by the above-described technical solution of the present invention also has the following additional technical features:

[0015] In some technical solutions, the movable tank may optionally include a lifting plate and a telescopic component, wherein the telescopic component is located between the lifting plate and the fixed tank, and both ends of the telescopic component are connected to the lifting plate and the fixed tank respectively, and the length of the telescopic component is adjustable.

[0016] In this technical solution, the movable tank is defined to include a lifting plate and a telescopic component. Specifically, the telescopic component is located between the lifting plate and the fixed tank, and the first end of the telescopic component is connected to the lifting plate, while the second end of the telescopic component is connected to the fixed tank.

[0017] The length of the telescopic component is adjustable. In other words, when the lifting plate moves relative to the fixed tank, the length of the telescopic component can be changed, thereby changing the volume of the part enclosed by the lifting plate and the telescopic component, and thus realizing the overall variable volume of the liquid storage chamber.

[0018] Specifically, when the fire truck is in a non-combat state, that is, when the lifting plate is in the first position (retracted position), the telescopic component has a first length, and the volume of the liquid storage chamber is relatively small. Therefore, the length of the fire truck boom system can be increased as much as possible while meeting relevant requirements, thereby increasing the working height of the boom system, increasing the fire extinguishing range, and thus meeting the fire extinguishing needs in various scenarios.

[0019] When the fire truck is in operational status, the lifting platform is moved away from the fixed tank to a second position (deployed position), giving the telescopic components a second length. This increases the volume of the liquid storage chamber, enhancing the liquid capacity and thus improving firefighting efficiency and operational duration. The second length is greater than the first length. Furthermore, the increased volume of the liquid storage chamber increases the chassis mass of the fire truck, effectively preventing tipping during boom deployment and improving the stability of the boom system, thereby enhancing the fire truck's operational safety.

[0020] Optionally, the first end of the telescopic component is fixedly connected to the lifting plate by welding, riveting or bolting, and the second end of the telescopic component is fixedly connected to the fixed tank by welding, riveting or bolting, so as to achieve a reliable connection between the telescopic component, the lifting plate and the fixed tank.

[0021] Optionally, the telescopic component includes a metal component, one end of which is connected to the lifting plate, and the other end of which is slidably connected to the fixed tank via a slide rail. During the movement of the lifting plate relative to the fixed tank, the other end of the metal component extends into or out of the liquid storage cavity via the slide rail, so as to realize that the length of the telescopic component is variable, thereby changing the volume of the liquid storage cavity.

[0022] In some technical solutions, optionally, the lifting plate can come into contact with the fixed tank when it moves toward the fixed tank.

[0023] In this technical solution, after the firefighting operation is completed, the lifting plate can be moved from the second position to the first position so that the movable tank can return to the retracted position, which facilitates the retraction of the fire truck's boom system.

[0024] Specifically, when the movable tank needs to be retracted, the lifting plate is moved towards the fixed tank, allowing it to contact the fixed tank. In other words, when the lifting plate returns to its retracted position, it is in contact with the fixed tank. On one hand, during the retraction process, the lifting plate can be limited to prevent excessive movement and interference with other structures, ensuring smooth vertical movement and facilitating rapid readiness for firefighting operations. On the other hand, because the lifting plate contacts the fixed tank during retraction, it prevents damage to the telescopic components, thus extending their service life.

[0025] In some technical solutions, the fire-fighting liquid tank may optionally include a connector, at least one of the lifting plate and the fixed tank body being connected to the telescopic member via the connector; wherein the connector is provided with multiple bends, and one end of the telescopic member is clamped between any two adjacent bends.

[0026] In this technical solution, the fire-fighting liquid tank is further defined as including a connector. Specifically, the lifting plate is connected to the first end of the telescopic member via the connector; that is, one end of the connector is connected to the lifting plate, and the other end of the connector is connected to the first end of the telescopic member. Optionally, the connector and the lifting plate are fixed by welding.

[0027] Alternatively, the fixed tank body is connected to the second end of the telescopic component via a connector; that is, one end of the connector is connected to the fixed tank body, and the other end of the connector is connected to the second end of the telescopic component. Optionally, the connector and the fixed tank body are fixed by welding.

[0028] Alternatively, the fixed tank and the lifting plate can be connected to both ends of the telescopic component via connectors. The specific configuration can be adjusted according to actual needs.

[0029] The connector is provided with multiple bends. The first end or the second end of the telescopic component is sandwiched between any two adjacent bends, thereby achieving a reliable connection between the connector and the telescopic component, and further achieving a reliable connection between the telescopic component and the lifting plate, and / or between the telescopic component and the fixed tank body. This effectively prevents leakage at the connection between the connector and the telescopic component when the volume in the liquid storage cavity is large, and improves the sealing performance of the liquid storage cavity.

[0030] Optionally, the first end of the connector and the telescopic member, or the second end of the connector and the telescopic member, is fixed by rolling and forming using a special mold.

[0031] In some technical solutions, the fire-fighting liquid tank may optionally include a first seal, which is disposed between any bend and the expansion joint.

[0032] In this technical solution, the fire-fighting liquid tank is further defined as including a first sealing element. Specifically, the first sealing element is disposed between any bend and telescopic component. That is, the first sealing element is filled in the gap between the bend and the telescopic component to seal the connection between the connector and the telescopic component, thereby further improving the sealing performance of the liquid storage chamber. When the volume of the liquid storage chamber is large, leakage at the connection between the connector and the telescopic component is prevented, ensuring fire-fighting efficiency and duration.

[0033] Optionally, the first seal includes a sealing strip.

[0034] In some technical solutions, the fire-fighting liquid tank may optionally include a second seal, which is located at the connection between the telescopic member and the lifting plate, and / or at the connection between the telescopic member and the fixed tank body.

[0035] This technical solution specifies that the fire-fighting liquid tank also includes a second sealing element. Specifically, the second sealing element is located at the connection between the telescopic component and the lifting plate. Alternatively, the second sealing element is located at the connection between the telescopic component and the fixed tank body. Alternatively, second sealing elements are respectively located at the connection between the telescopic component and the lifting plate, and at the connection between the telescopic component and the fixed tank body. The specific configuration can be determined according to actual needs.

[0036] By setting a second seal, the connection between the telescopic component and the lifting plate, and / or the connection between the telescopic component and the fixed tank, can be sealed, improving the sealing performance of the liquid storage chamber. When the volume of the liquid storage chamber is large, leakage is prevented at the connection between the lifting plate and the telescopic component, and / or the connection between the telescopic component and the fixed tank, ensuring fire fighting efficiency and duration.

[0037] In some technical solutions, the telescopic component may optionally include a flexible polymer component; and / or the lifting plate may include a metal plate or a plastic plate.

[0038] In this technical solution, the telescopic component is defined as a flexible polymer component, and optionally, the flexible polymer component includes a fiber cloth.

[0039] Because the telescopic component is a flexible polymer part, its length can be changed when the lifting plate moves away from or towards the fixed tank. This change in length alters the volume of the area enclosed by the lifting plate and the telescopic component, thereby changing the overall volume of the storage chamber and achieving variable volume.

[0040] The lifting platform is made of metal or plastic, which gives it a certain structural strength and makes it easy to control its movement.

[0041] Alternatively, if the lifting plate is a plastic plate, the plastic plate may include PP (Polypropylene) plates.

[0042] In some technical solutions, the fixed tank may optionally include metal or plastic parts.

[0043] This technical solution specifies that the fixed tank can consist of metal or plastic parts, thereby giving the fixed tank a certain structural strength and compressive strength. This facilitates the installation of the fixed tank in conjunction with the fire truck, while ensuring that the fire extinguishing liquid tank can hold a large volume of extinguishing medium, thereby increasing the duration of firefighting operations and extending the service life of the fire extinguishing liquid tank.

[0044] In some technical solutions, the fire-fighting liquid tank may optionally include a drive assembly connected to the movable tank body. The drive assembly is capable of driving the movable tank body to move relative to the fixed tank body to change the volume of the liquid storage chamber.

[0045] In this technical solution, the fire-fighting liquid tank is further defined as including a drive component. Specifically, the drive component is connected to the movable tank body. That is to say, under the drive of the drive component, the movable tank body can move relative to the fixed tank body, so that the volume of the liquid storage chamber is variable. This makes it easier for firefighters to control the volume of the liquid storage chamber according to the actual combat situation, improves the operational convenience of the variable volume of the liquid storage chamber, and helps to further improve the efficiency of fire-fighting operations.

[0046] Optionally, the drive assembly is located outside the liquid storage chamber. Alternatively, the drive assembly can be located inside the liquid storage chamber, depending on actual needs. It is understood that placing the drive assembly outside the liquid storage chamber avoids occupying space within the chamber. Placing the drive assembly inside the liquid storage chamber facilitates the lifting and lowering control of the movable tank.

[0047] In some technical solutions, the drive assembly may optionally include multiple drive components, which are spaced apart and connected to the lifting plate respectively.

[0048] In this technical solution, the drive assembly is defined as including multiple drive components. Specifically, the multiple drive components are distributed at intervals. Optionally, when the cross-sectional shape of the lifting plate is rectangular, the multiple drive components are distributed at the four corners of the rectangle, or the multiple drive components are distributed at the four sides of the rectangle. The specific configuration can be adjusted according to actual needs.

[0049] Multiple drive components are connected to the lifting plate, and these components are spaced apart. This means that the lifting plate can be driven at multiple positions to move away from or towards the fixed tank, which helps ensure the reliability of the lifting process. Furthermore, it ensures that the lifting plate is horizontal when it reaches the second position (the deployed position), maximizing the volume of the liquid storage chamber and further improving firefighting efficiency and duration.

[0050] In some technical solutions, the fire-fighting liquid tank may optionally include a detection element, which is disposed on the lifting plate and is used to detect whether the lifting plate is in a horizontal state; wherein, if the lifting plate is not in a horizontal state, at least one drive component can adjust the moving displacement of the lifting plate according to the detection result of the detection element so that the lifting plate is in a horizontal state.

[0051] In this technical solution, the fire-fighting liquid tank is further defined as including a detection element. Specifically, the detection element is installed on the lifting plate and can detect whether the lifting plate is in a horizontal state.

[0052] When the detection component detects that the lifting plate is not in a horizontal state, the movement displacement of the lifting plate can be changed by adjusting at least one driving component, thereby ensuring that the lifting plate is always in a horizontal state.

[0053] Optionally, the detection element includes a level sensor.

[0054] Optionally, the fire-fighting liquid tank also includes a controller, which is electrically connected to the detection element and each drive element. Specifically, when the detection element detects that the lifting plate is not in a horizontal state, it sends a signal to the controller. The controller controls the drive element at the lower part of the lifting plate according to the detection result, causing the drive element to move the lifting plate away from the fixed tank by a set displacement, or controls the drive element at the higher part of the lifting plate, causing the drive element to move the lifting plate closer to the fixed tank by a set displacement, ensuring that the lifting plate is always in a horizontal state. The specific control method can be set according to actual needs.

[0055] In some technical solutions, optionally, at least one driving component includes a telescopic cylinder, which is located in the fixed tank and connected to the lifting plate.

[0056] In this technical solution, at least one driving component is defined as a telescopic cylinder. Specifically, the telescopic cylinder is mounted on the fixed tank and connected to the lifting plate. The telescopic cylinder drives the lifting plate to move relative to the fixed tank, resulting in a large lifting height. In operational mode, this helps to further increase the volume of the liquid storage chamber, extend operational time, and improve the stability of fire truck operations.

[0057] Optionally, the telescopic cylinder can be a hydraulic telescopic cylinder or a pneumatic telescopic cylinder. Specifically, when the telescopic cylinder is a hydraulic telescopic cylinder, it is connected to the hydraulic drive system of the fire truck, which helps to reduce the production cost of the fire truck. When the telescopic cylinder is a pneumatic telescopic cylinder, it is connected to the pneumatic drive system of the fire truck, which also helps to reduce the production cost of the fire truck.

[0058] In some technical solutions, optionally, at least one driving component includes a first screw and a second screw, wherein the first screw is rotatably disposed on the fixed tank, the second screw is connected to the lifting plate, and the second screw is threadedly engaged with the first screw.

[0059] In this technical solution, at least one driving component is defined as including a first screw and a second screw. Specifically, the first screw is rotatably connected to the fixed tank body, the second screw is connected to the lifting plate, and the second screw is threadedly engaged with the first screw.

[0060] Optionally, at least one driving component further includes a motor connected to the first screw. Specifically, under the drive of the motor, the first screw rotates, thereby enabling the second screw to move up and down relative to the fixed tank, thereby driving the lifting plate to move away from or towards the fixed tank, so as to achieve variable volume of the liquid storage chamber by changing the length of the telescopic component.

[0061] The lifting slab is raised and lowered using a twin-screw structure, which occupies less space and moves smoothly. This improves the stability and reliability of the lifting process and helps ensure the smooth progress of firefighting operations.

[0062] Optionally, the first screw has an internal thread, and the second screw has an external thread. Alternatively, the first screw has an external thread, and the second screw has an internal thread. The specific configuration can be determined according to actual needs.

[0063] In some technical solutions, optionally, at least one driving component includes a first link and a second link, wherein the two ends of the first link are respectively hinged to the fixed tank and the lifting plate, the second link is hinged to the first link, one end of the second link is hinged to the lifting plate, and the other end of the second link is movable relative to the first link.

[0064] In this technical solution, at least one driving component includes a first connecting rod and a second connecting rod hinged together. Specifically, one end of the first connecting rod is hinged to the lifting plate, and the other end is hinged to the fixed tank body. One end of the second connecting rod is also hinged to the lifting plate. The other end of the second connecting rod can move relative to the first connecting rod electrically or by traction, thereby enabling the lifting plate to move up and down. This allows for variable volume of the liquid storage chamber, occupies less space, and has a simple structure, which helps to reduce the production cost of fire-fighting liquid tanks.

[0065] According to a second aspect of the present invention, a fire truck is provided, comprising a fire-fighting liquid tank as provided by any of the above-described technical solutions, and thus possessing all the beneficial technical effects of the fire-fighting liquid tank, which will not be elaborated further here.

[0066] Optionally, the fire truck also includes a boom system comprising multiple movable booms, at least one of which is movable relative to the other movable booms to allow the boom system to be in an extended or folded state; wherein the movable tank is movable between a first position and a second position, wherein when the movable tank is in the first position, the storage chamber has a first volume and the boom system is in a folded state; and when the movable tank is in the second position, the storage chamber has a second volume and the boom system is in an extended state, the second volume being larger than the first volume.

[0067] Specifically, when the fire truck is in a non-combat state, that is, when the movable tank is in the first position (retracted position), the volume of the liquid storage chamber is relatively small. Therefore, the length of the fire truck boom system can be increased as much as possible while meeting relevant requirements, thereby increasing the working height of the boom system, increasing the fire extinguishing range, and thus meeting the fire extinguishing needs in various scenarios.

[0068] When a fire truck is in operational status, the movable tank is moved relative to the fixed tank to a second position (the deployed position) to increase the volume of the liquid storage chamber and thus the liquid capacity, thereby improving firefighting efficiency and operational duration. Furthermore, the increased volume of the liquid storage chamber increases the chassis mass of the fire truck, effectively preventing tipping during boom deployment and improving the stability of the boom system, thereby enhancing the fire truck's operational safety.

[0069] Understandably, after the firefighting operation is completed, excess extinguishing medium in the storage chamber can be discharged, and the movable tank can be returned to the first position (retracted position) to facilitate the retraction of the boom system.

[0070] Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description or may be learned by practice of the invention. Attached Figure Description

[0071] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0072] Figure 1 shows one of the structural schematic diagrams of a fire-fighting liquid tank according to an embodiment of the present invention;

[0073] Figure 2 shows a second structural schematic diagram of a fire-fighting liquid tank according to an embodiment of the present invention;

[0074] Figure 3 shows one of the partial structural schematic diagrams of a fire-fighting liquid tank according to an embodiment of the present invention;

[0075] Figure 4 shows a second partial structural schematic diagram of a fire-fighting liquid tank according to an embodiment of the present invention;

[0076] Figure 5 shows a third structural schematic diagram of a fire-fighting liquid tank according to an embodiment of the present invention;

[0077] Figure 6 shows one of the structural schematic diagrams of a drive component according to an embodiment of the present invention;

[0078] Figure 7 shows a second schematic diagram of the structure of a drive component according to an embodiment of the present invention;

[0079] Figure 8 shows a third schematic diagram of the structure of a drive component according to an embodiment of the present invention;

[0080] Figure 9 shows a fourth schematic diagram of the structure of a drive component according to an embodiment of the present invention;

[0081] Figure 10 shows a fifth schematic diagram of the structure of a drive component according to an embodiment of the present invention;

[0082] Figure 11 shows a sixth schematic diagram of the structure of a drive component according to an embodiment of the present invention;

[0083] Figure 12 shows one of the structural schematic diagrams of a fire truck according to an embodiment of the present invention;

[0084] Figure 13 shows a second structural schematic diagram of a fire truck according to an embodiment of the present invention.

[0085] The correspondence between the reference numerals and component names in Figures 1 to 13 is as follows: 100 Fire-fighting liquid tank, 110 Fixed tank body, 120 Movable tank body, 121 Lifting plate, 122 Telescopic component, 130 Liquid storage chamber, 140 Connecting component, 141 Bending part, 150 First seal, 160 Second seal, 170 Drive assembly, 171 Drive component, 172 Telescopic cylinder, 173 First screw, 174 Second screw, 175 First connecting rod, 176 Second connecting rod, 180 Detection component, 200 Fire truck, 210 Boom system, 211 Movable boom. Detailed Implementation

[0086] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0087] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0088] The fire-fighting liquid tank 100 and fire truck 200 according to some embodiments of the present invention will now be described with reference to Figures 1 to 13.

[0089] In one embodiment of this application, as shown in Figures 1, 2, 12 and 13, a fire-fighting liquid tank 100 is proposed. The fire-fighting liquid tank 100 includes: a fixed tank body 110; and a movable tank body 120, which is movably connected to the fixed tank body 110 and forms a liquid storage cavity 130 with the fixed tank body 110. The movable tank body 120 is capable of moving vertically relative to the fixed tank body 110 to change the volume of the liquid storage cavity 130.

[0090] The fire-fighting liquid tank 100 provided in this embodiment of the invention includes a fixed tank body 110 and a movable tank body 120. Specifically, the movable tank body 120 and the fixed tank body 110 enclose a liquid storage cavity 130. It can be understood that the liquid storage cavity 130 is used to contain fire-fighting media, such as water, foam liquid, etc.

[0091] The movable tank 120 can move relative to the fixed tank 110. Optionally, the movable tank 120 is driven by a drive assembly 170. Alternatively, the movable tank 120 can be manually moved by firefighters. The specific configuration can be adjusted according to actual needs.

[0092] During the movement of the movable tank 120 relative to the fixed tank 110, the volume of the liquid storage chamber 130 can be changed, thus achieving variable volume of the liquid storage chamber 130. Specifically, when the fire truck 200 equipped with the fire-fighting liquid tank 100 is in a non-combat state, that is, when the movable tank 120 is in the first position (retracted position), the volume of the liquid storage chamber 130 is relatively small. Therefore, under the condition of meeting relevant requirements, the length of the boom system 210 of the fire truck 200 can be increased as much as possible, thereby increasing the working height of the boom system 210, making the fire-fighting operation process convenient and flexible, increasing the fire-fighting range, and thus meeting the fire-fighting needs in various scenarios.

[0093] When the fire truck 200 is in operational status, the movable tank 120 is moved relative to the fixed tank 110 to a second position (deployed position) to increase the volume of the liquid storage chamber 130 and increase the liquid capacity. This improves firefighting efficiency and operational time, enabling effective fire suppression. Furthermore, the increased volume of the liquid storage chamber 130 increases the chassis mass of the fire truck 200, effectively preventing it from tipping over when the boom system 210 is deployed. This enhances the stability of the boom system 210 after deployment, thereby improving the operational safety of the fire truck 200.

[0094] Understandably, after the firefighting operation is completed, excess extinguishing medium in the storage chamber 130 can be discharged, and the movable tank 120 can be returned to the first position, so that the boom system 210 of the fire truck 200 can be retracted.

[0095] By moving the movable tank 120 relative to the fixed tank 110, the volume of the liquid storage chamber 130 can be varied. This allows the volume of the liquid storage tank to be controlled according to the actual combat situation of the fire truck 200, thereby optimizing both the working height and liquid load of the boom system 210 and satisfying the dual advantages of high liquid load under a high boom.

[0096] As shown in Figures 1, 2, 3 and 4, in some embodiments, the movable tank 120 may optionally include a lifting plate 121 and a telescopic member 122, wherein the telescopic member 122 is located between the lifting plate 121 and the fixed tank 110, and both ends of the telescopic member 122 are connected to the lifting plate 121 and the fixed tank 110 respectively, and the length of the telescopic member 122 is adjustable.

[0097] In this embodiment, the movable tank 120 is defined to include a lifting plate 121 and a telescopic member 122. Specifically, the telescopic member 122 is located between the lifting plate 121 and the fixed tank 110, and the first end of the telescopic member 122 is connected to the lifting plate 121, and the second end of the telescopic member 122 is connected to the fixed tank 110.

[0098] The length of the telescopic component 122 is adjustable. That is, when the lifting plate 121 moves relative to the fixed tank 110, the length of the telescopic component 122 can be changed, so that the volume of the part enclosed by the lifting plate 121 and the telescopic component 122 changes, thereby realizing the overall variable volume of the liquid storage chamber 130.

[0099] Specifically, when the fire truck 200 is in a non-combat state, that is, when the lifting plate 121 is in the first position (retracted position), the telescopic member 122 has a first length, and the volume of the liquid storage chamber 130 is relatively small, therefore, the length of the boom system 210 of the fire truck 200 can be increased as much as possible while meeting the relevant requirements, thereby increasing the working height of the boom system 210, increasing the fire extinguishing range, and thus meeting the fire extinguishing needs in various scenarios.

[0100] When the fire truck 200 is in operational status, the lifting plate 121 is controlled to move away from the fixed tank 110 to a second position (deployed position), giving the telescopic member 122 a second length. This increases the volume of the liquid storage chamber 130, improving the liquid capacity and thus enhancing firefighting efficiency and operational duration. The second length is greater than the first length. Furthermore, the increased volume of the liquid storage chamber 130 increases the chassis mass of the fire truck 200, effectively preventing it from tipping over when the boom system 210 is deployed. This improves the stability of the boom system 210 after deployment, thereby enhancing the operational safety of the fire truck 200.

[0101] Optionally, the first end of the telescopic component 122 is fixedly connected to the lifting plate 121 by welding, riveting or bolting, and the second end of the telescopic component 122 is fixedly connected to the fixed tank 110 by welding, riveting or bolting, so as to achieve a reliable connection between the telescopic component 122, the lifting plate 121 and the fixed tank 110.

[0102] Optionally, the telescopic component 122 includes a metal component, one end of which is connected to the lifting plate 121, and the other end of which is slidably connected to the fixed tank 110 via a slide rail. During the movement of the lifting plate 121 relative to the fixed tank 110, the other end of the metal component extends into or moves out of the liquid storage chamber 130 via the slide rail, so as to realize that the length of the telescopic component 122 is variable, thereby changing the volume of the liquid storage chamber 130.

[0103] In some embodiments, optionally, when the lifting plate 121 moves toward the fixed tank 110, the lifting plate 121 can contact the fixed tank 110. For example, the telescopic member 122 is positioned on the side relative to the lifting plate 121 and the fixed tank 110, and can be arranged either inside or outside the lifting plate 121 and the fixed tank 110. When the lifting plate 121 moves toward the fixed tank 110, the lifting plate 121 can contact the fixed tank 110 without pressing on the telescopic member 122.

[0104] In this embodiment, after the firefighting operation is completed, the lifting plate 121 can be moved from the second position to the first position so that the movable tank 120 can return to the retracted position, which facilitates the retraction of the boom system 210 of the fire truck 200.

[0105] Specifically, when the movable tank 120 needs to be retracted, the lifting plate 121 moves towards the fixed tank 110, allowing it to contact the fixed tank 110. In other words, when the lifting plate 121 returns to its retracted position, it is in contact with the fixed tank 110. On one hand, during the retraction process, the lifting plate 121 can be limited, preventing excessive movement and interference with other structures, ensuring smooth vertical movement of the lifting plate 121 again, and facilitating rapid readiness for firefighting operations. On the other hand, since the lifting plate 121 contacts the fixed tank 110 during retraction, it avoids pressing on the telescopic component 122, thus extending its service life.

[0106] As shown in Figures 3 and 4, in some embodiments, the fire-fighting liquid tank 100 may optionally include a connector 140, at least one of the lifting plate 121 and the fixed tank body 110 being connected to the telescopic member 122 via the connector 140; wherein the connector 140 is provided with a plurality of bends 141, and one end of the telescopic member 122 is sandwiched between any two adjacent bends 141.

[0107] In this embodiment, the fire-fighting liquid tank 100 further includes a connector 140. Specifically, the lifting plate 121 is connected to the first end of the telescopic member 122 via the connector 140. That is, one end of the connector 140 is connected to the lifting plate 121, and the other end of the connector 140 is connected to the first end of the telescopic member 122. Optionally, the connector 140 and the lifting plate 121 are fixed by welding.

[0108] Alternatively, the fixed tank 110 is connected to the second end of the telescopic member 122 via a connector 140. That is, one end of the connector 140 is connected to the fixed tank 110, and the other end of the connector 140 is connected to the second end of the telescopic member 122. Optionally, the connector 140 is fixed to the fixed tank 110 by welding.

[0109] Alternatively, the fixed tank 110 and the lifting plate 121 can be connected to both ends of the telescopic member 122 via connectors 140. The specific configuration can be adjusted according to actual needs.

[0110] The connector 140 is provided with multiple bends 141. The first end or the second end of the telescopic member 122 is sandwiched between any two adjacent bends 141, thereby achieving a reliable connection between the connector 140 and the telescopic member 122, and further achieving a reliable connection between the telescopic member 122 and the lifting plate 121, and / or between the telescopic member 122 and the fixed tank 110. This effectively prevents leakage at the connection between the connector 140 and the telescopic member 122 when the volume in the liquid storage chamber 130 is large, and improves the sealing performance of the liquid storage chamber 130.

[0111] Optionally, the first end of the connector 140 and the telescopic member 122, or the second end of the connector 140 and the telescopic member 122, are fixed by rolling and forming with a special mold.

[0112] As shown in Figure 4, in some embodiments, the fire-fighting liquid tank 100 may optionally include a first seal 150, which is disposed between any bend 141 and telescopic member 122.

[0113] In this embodiment, the fire-fighting liquid tank 100 is further defined as including a first sealing element 150. Specifically, the first sealing element 150 is disposed between any bend 141 and telescopic member 122. That is, the first sealing element 150 is filled in the gap between the bend 141 and the telescopic member 122, thereby sealing the connection between the connector 140 and the telescopic member 122, further improving the sealing performance of the liquid storage chamber 130. When the volume of the liquid storage chamber 130 is large, leakage at the connection between the connector 140 and the telescopic member 122 is prevented, ensuring fire-fighting efficiency and duration.

[0114] Optionally, the first seal 150 includes a sealing strip.

[0115] As shown in Figure 1, in some embodiments, the fire-fighting liquid tank 100 may optionally include a second seal 160, which is disposed at the connection between the telescopic member 122 and the lifting plate 121, and / or the second seal 160 is disposed at the connection between the telescopic member 122 and the fixed tank body 110.

[0116] In this embodiment, the fire-fighting liquid tank 100 further includes a second sealing element 160. Specifically, the second sealing element 160 is disposed at the connection between the telescopic member 122 and the lifting plate 121. Alternatively, the second sealing element 160 is disposed at the connection between the telescopic member 122 and the fixed tank body 110. Alternatively, the second sealing element 160 is disposed at both the connection between the telescopic member 122 and the lifting plate 121 and the connection between the telescopic member 122 and the fixed tank body 110. The specific configuration can be determined according to actual needs.

[0117] By providing a second seal 160, the connection between the telescopic member 122 and the lifting plate 121, and / or the connection between the telescopic member 122 and the fixed tank 110, can be sealed, thereby improving the sealing performance of the liquid storage chamber 130. When the volume of the liquid storage chamber 130 is large, leakage is prevented at the connection between the lifting plate 121 and the telescopic member 122, and / or the connection between the telescopic member 122 and the fixed tank 110, thus ensuring fire fighting efficiency and duration.

[0118] In some embodiments, the telescopic member 122 may optionally include a flexible polymer member; and / or the lifting plate 121 may include a metal plate or a plastic plate.

[0119] In this embodiment, the telescopic member 122 is defined as a flexible polymer component, which optionally includes a fiber cloth.

[0120] Because the telescopic component 122 is a flexible polymer component, its length can be changed when the lifting plate 121 moves away from or towards the fixed tank 110. This change in length alters the volume of the portion enclosed by the lifting plate 121 and the telescopic component 122, thereby changing the overall volume of the liquid storage chamber 130 and enabling variable volume of the liquid storage chamber 130.

[0121] The lifting plate 121 is made of metal or plastic, which gives the lifting plate 121 a certain structural strength and makes it easy to control the movement of the lifting plate 121.

[0122] Alternatively, if the lifting plate 121 is a plastic plate, the plastic plate may include a PP (Polypropylene) plate.

[0123] In some embodiments, the fixed tank 110 may optionally include metal or plastic components.

[0124] In this embodiment, the fixed tank 110 is defined to include metal or plastic parts, thereby giving the fixed tank 110 a certain structural strength and compressive strength. This facilitates the installation of the fixed tank 110 in conjunction with the fire truck 200, while ensuring that the fire extinguishing liquid tank 100 can accommodate a large volume of extinguishing medium, thereby increasing the duration of combat operations and extending the service life of the fire extinguishing liquid tank 100.

[0125] As shown in Figures 1, 2 and 5, in some embodiments, the fire-fighting liquid tank 100 may optionally include a drive assembly 170 connected to the movable tank 120. The drive assembly 170 can drive the movable tank 120 to move relative to the fixed tank 110 to change the volume of the liquid storage chamber 130.

[0126] In this embodiment, the fire-fighting liquid tank 100 is further defined as including a drive assembly 170. Specifically, the drive assembly 170 is connected to the movable tank body 120. That is, under the drive of the drive assembly 170, the movable tank body 120 can move relative to the fixed tank body 110, so that the volume of the liquid storage chamber 130 is variable. This makes it easier for firefighters to control the volume of the liquid storage chamber 130 according to the actual combat situation, improves the operational convenience of the variable volume of the liquid storage chamber 130, and helps to further improve the efficiency of fire-fighting operations.

[0127] Optionally, the drive assembly 170 is located outside the liquid storage chamber 130. Alternatively, the drive assembly 170 is located inside the liquid storage chamber 130, depending on actual needs. It is understood that having the drive assembly 170 outside the liquid storage chamber 130 avoids occupying space within the chamber. Having the drive assembly 170 inside the liquid storage chamber 130 facilitates the lifting and lowering control of the movable tank 120.

[0128] As shown in Figures 1, 2, 5, 6, 7, 8, 9, 10 and 11, in some embodiments, the drive assembly 170 may optionally include a plurality of drive members 171, which are spaced apart and connected to the lifting plate 121 respectively.

[0129] In this embodiment, the drive assembly 170 is defined to include a plurality of drive members 171. Specifically, the plurality of drive members 171 are distributed at intervals. Optionally, when the cross-sectional shape of the lifting plate 121 is rectangular, the plurality of drive members 171 are distributed at the four corners of the rectangle, or the plurality of drive members 171 are distributed at the four sides of the rectangle. The specific configuration can be made according to actual needs.

[0130] Multiple drive components 171 are connected to the lifting plate 121 respectively, and the multiple drive components 171 are spaced apart. That is to say, the lifting plate 121 can be driven to move away from the fixed tank 110 or move closer to the fixed tank 110 at multiple positions, which helps to ensure the reliability of the lifting plate 121's lifting process. Moreover, it also helps to ensure that the lifting plate 121 is in a horizontal state when it moves to the second position (the unfolded position), ensuring that the volume of the liquid storage chamber 130 can be increased to the maximum, which helps to further improve the efficiency of fire fighting operations and the duration of operation.

[0131] As shown in Figure 5, in some embodiments, the fire-fighting liquid tank 100 may optionally include a detection element 180, which is disposed on the lifting plate 121 and is used to detect whether the lifting plate 121 is in a horizontal state; wherein, if the lifting plate 121 is not in a horizontal state, at least one drive element 171 can adjust the moving displacement of the lifting plate 121 according to the detection result of the detection element 180, so that the lifting plate 121 is in a horizontal state.

[0132] In this embodiment, the fire-fighting liquid tank 100 is further defined as including a detection element 180. Specifically, the detection element 180 is disposed on the lifting plate 121, and the detection element 180 is capable of detecting whether the lifting plate 121 is in a horizontal state.

[0133] When the detection element 180 detects that the lifting plate 121 is not in a horizontal state, the movement displacement of the lifting plate 121 at the position of the driving element 171 can be changed by adjusting at least one driving element 171, so that the lifting plate 121 is always in a horizontal state.

[0134] Optionally, the detection element 180 includes a level sensor.

[0135] Optionally, the fire-fighting liquid tank 100 also includes a controller, which is electrically connected to the detection element 180 and each drive element 171. Specifically, when the detection element 180 detects that the lifting plate 121 is not in a horizontal state, it sends a signal to the controller. The controller controls the drive element 171 at the lower position of the lifting plate 121, causing the drive element 171 to drive the lifting plate 121 to move a set displacement away from the fixed tank body 110, or controls the drive element 171 at the higher position of the lifting plate 121, causing the drive element 171 to drive the lifting plate 121 to move a set displacement closer to the fixed tank body 110, ensuring that the lifting plate 121 is always in a horizontal state. The specific control method can be set according to actual needs.

[0136] As shown in Figures 6 and 7, in some embodiments, optionally, at least one drive member 171 includes a telescopic cylinder 172, which is disposed on the fixed tank 110 and connected to the lifting plate 121.

[0137] In this embodiment, at least one driving component 171 is defined, including a telescopic cylinder 172. Specifically, the telescopic cylinder 172 is mounted on the fixed tank 110 and is connected to the lifting plate 121. The telescopic cylinder 172 drives the lifting plate 121 to move relative to the fixed tank 110, resulting in a large lifting height. In operational mode, this facilitates further increasing the volume of the liquid storage chamber 130, extending operational time, and improving the stability of the fire truck 200 operation.

[0138] Optionally, the telescopic cylinder 172 can be a hydraulic cylinder or a pneumatic cylinder. Specifically, when the telescopic cylinder 172 is a hydraulic cylinder, it is connected to the hydraulic drive system of the fire truck 200, which helps to reduce the production cost of the fire truck 200. When the telescopic cylinder 172 is a pneumatic cylinder, it is connected to the pneumatic drive system of the fire truck 200, which also helps to reduce the production cost of the fire truck 200.

[0139] As shown in Figures 8 and 9, in some embodiments, optionally, at least one drive member 171 includes a first screw 173 and a second screw 174, wherein the first screw 173 is rotatably disposed on the fixed tank 110, the second screw 174 is connected to the lifting plate 121, and the second screw 174 is threadedly engaged with the first screw 173.

[0140] In this embodiment, at least one drive member 171 is defined, including a first screw 173 and a second screw 174. Specifically, the first screw 173 is rotatably connected to the fixed tank 110, the second screw 174 is connected to the lifting plate 121, and the second screw 174 is threadedly engaged with the first screw 173.

[0141] Optionally, at least one drive component 171 also includes a motor connected to the first screw 173. Specifically, under the drive of the motor, the first screw 173 rotates, thereby enabling the second screw 174 to move up and down relative to the fixed tank 110, thereby driving the lifting plate 121 to move away from or towards the fixed tank 110, so as to realize the variable volume of the liquid storage chamber 130 by changing the length of the telescopic component 122.

[0142] The lifting plate 121 is raised and lowered using a twin-screw structure, which occupies less space and moves smoothly. This helps to improve the stability and reliability of the lifting plate 121 during the lifting process, and helps to ensure the smooth progress of fire fighting operations.

[0143] Optionally, the first screw 173 has an internal thread, and the second screw 174 has an external thread. Alternatively, the first screw 173 has an external thread, and the second screw 174 has an internal thread. The specific configuration can be determined according to actual needs.

[0144] As shown in Figures 10 and 11, in some embodiments, optionally, at least one drive member 171 includes a first link 175 and a second link 176, wherein the two ends of the first link 175 are respectively hinged to the fixed tank 110 and the lifting plate 121, the second link 176 is hinged to the first link 175, one end of the second link 176 is hinged to the lifting plate 121, and the other end of the second link 176 is movable relative to the first link 175.

[0145] In this embodiment, at least one driving member 171 is defined, including a first connecting rod 175 and a second connecting rod 176 hinged together. Specifically, one end of the first connecting rod 175 is hinged to the lifting plate 121, and the other end of the first connecting rod 175 is hinged to the fixed tank 110. One end of the second connecting rod 176 is hinged to the lifting plate 121. The other end of the second connecting rod 176 can move relative to the first connecting rod 175 by electric or traction means, so that the lifting plate 121 can move up and down, thereby realizing the variable volume of the liquid storage chamber 130, occupying less space, and having a simple structure, which is beneficial to reducing the production cost of the fire-fighting liquid tank 100.

[0146] According to a second aspect of the present invention, a fire truck 200 is provided, which includes a fire-fighting liquid tank 100 as provided in any of the above embodiments, and thus possesses all the beneficial technical effects of the fire-fighting liquid tank 100, which will not be described in detail here.

[0147] As shown in Figures 12 and 13, optionally, the fire truck 200 further includes a boom system 210, which includes a plurality of movable booms 211, at least one of which is movable relative to the other movable booms 211, so that the boom system 210 is in an extended or folded state; wherein, the movable tank 120 is movable between a first position and a second position, wherein when the movable tank 120 is in the first position, the liquid storage chamber 130 has a first volume and the boom system 210 is in a folded state; and when the movable tank 120 is in the second position, the liquid storage chamber 130 has a second volume and the boom system 210 is in an extended state, the second volume being larger than the first volume.

[0148] Specifically, when the fire truck 200 is in a non-combat state, that is, when the movable tank 120 is in the first position (retracted position), the volume of the liquid storage chamber 130 is relatively small. Therefore, the length of the boom system 210 of the fire truck 200 can be increased as much as possible while meeting the relevant requirements, thereby increasing the working height of the boom system 210, increasing the fire extinguishing range, and thus meeting the fire extinguishing needs in various scenarios.

[0149] When the fire truck 200 is in operational status, the movable tank 120 is moved relative to the fixed tank 110 to the second position (deployed position) to increase the volume of the liquid storage chamber 130 and improve the liquid capacity, thereby enhancing firefighting efficiency and operational duration. Furthermore, the increased volume of the liquid storage chamber 130 increases the chassis mass of the fire truck 200, effectively preventing it from tipping over when the boom system 210 is deployed, thus improving the stability of the boom system 210 after deployment and enhancing the operational safety of the fire truck 200. It is understood that after the firefighting operation is completed, excess extinguishing media in the liquid storage chamber 130 can be discharged, and the movable tank 120 can be returned to the first position (retracted position) to facilitate the retraction of the boom system 210.

[0150] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0151] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0152] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fire-fighting liquid tank characterized by comprising: The fire-fighting liquid tank comprises: a fixed tank body; a movable tank body movably connected with the fixed tank body and enclosing a liquid storage cavity with the fixed tank body, the movable tank body being capable of moving vertically relative to the fixed tank body to change the volume of the liquid storage cavity.

2. The fire-fighting liquid tank according to claim 1, characterized in that The movable tank body comprises: a jacking plate; a telescopic member located between the jacking plate and the fixed tank body, two ends of the telescopic member being connected with the jacking plate and the fixed tank body respectively, and the length of the telescopic member being adjustable.

3. The fire-fighting liquid tank according to claim 2, wherein the jacking plate is capable of contacting the fixed tank body when the jacking plate moves towards the fixed tank body.

4. The fire-fighting liquid tank according to claim 2, characterized in that Further comprising: a connecting member, at least one of the jacking plate and the fixed tank body being connected with the telescopic member through the connecting member; wherein the connecting member is provided with a plurality of bending portions, and one end of the telescopic member is clamped between any two adjacent bending portions.

5. The fire-fighting liquid tank according to claim 4, characterized in that Further comprising: a first sealing member provided between any bending portion and the telescopic member.

6. The fire-fighting liquid tank according to claim 2, characterized in that Further comprising: a second sealing member provided at the connection between the telescopic member and the jacking plate, and / or the second sealing member is provided at the connection between the telescopic member and the fixed tank body.

7. The fire-fighting liquid tank according to any one of claims 2 to 6, characterized in that, The telescopic member comprises a flexible high polymer member; and / or the jacking plate comprises a metal plate or a plastic plate; and / or the fixed tank body comprises a metal member or a plastic member.

8. The fire-fighting liquid tank according to any one of claims 2 to 6, characterized in that, Further comprising: a driving assembly connected with the movable tank body, the driving assembly being capable of driving the movable tank body to move relative to the fixed tank body to change the volume of the liquid storage cavity; the driving assembly comprising a plurality of driving members, the driving members being spaced apart and connected with the jacking plate respectively; wherein at least one of the driving members comprises a telescopic cylinder provided on the fixed tank body and connected with the jacking plate, or at least one of the driving members comprises a first screw rod and a second screw rod, the first screw rod being rotatably provided on the fixed tank body, the second screw rod being connected with the jacking plate, and the second screw rod being threadedly engaged with the first screw rod, or at least one of the driving members comprises a first connecting rod and a second connecting rod, two ends of the first connecting rod being hingedly connected with the fixed tank body and the jacking plate respectively, the second connecting rod being hingedly connected with the first connecting rod, one end of the second connecting rod being hingedly connected with the jacking plate, and the other end of the second connecting rod being capable of moving relative to the first connecting rod.

9. The fire-fighting liquid tank according to claim 8, characterized in that Further comprising: a detection member provided on the jacking plate and used for detecting whether the jacking plate is in a horizontal state; wherein, when the jacking plate is not in the horizontal state, at least one of the driving members is capable of adjusting the moving displacement of the jacking plate according to the detection result of the detection member, so that the jacking plate is in the horizontal state.

10. A fire apparatus characterized by, The fire-fighting liquid tank comprises the fire-fighting liquid tank according to any one of claims 1 to 9.

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