A layout structure of water hoses and cables for a drone fire truck

Abstract

This utility model discloses a fire truck hose and cable layout structure, including a fire truck and a drone, with the drone mounted on the upper part of the fire truck. A fire-extinguishing water spray pipe is installed on the drone, connected to the fire truck's water pump via a hose. The drone is connected to a DC power supply on the chassis at the bottom of the fire truck via a cable, with the drone receiving DC power from the chassis power supply. Only one positive conductor is installed in the cable. The hose includes an outer layer, a negative conductor, and an inner lining layer, with the negative conductor positioned between the outer and inner lining layers and braided together with the outer layer. This utility model removes the negative conductor from the cable and integrates it into the hose structure, reducing the cable diameter and weight, effectively increasing the drone's lifting height under a 400kg load. The flowing medium inside the hose continuously carries away heat from the negative conductor, avoiding overheating risks. Simultaneously, the braided copper conductor and polyester layer enhance the hose's compressive strength.

Description

Technical Field

[0001] This utility model belongs to the field of fire truck equipment technology, specifically relating to a layout structure of water hoses and cables for an unmanned aerial vehicle (UAV) fire truck. Background Technology

[0002] Currently, fire trucks equipped with drones are becoming increasingly common in high-rise firefighting operations. These trucks provide continuous power to the drones via cables and deliver fire extinguishing agents via hoses. In traditional solutions, a single cable must independently carry both positive and negative conductors to meet DC power requirements, resulting in excessively large cable diameters (typically greater than 60mm) and significant weight, limiting the drone's payload and flight altitude. Furthermore, the concentrated deployment of dual conductors increases the risk of short circuits due to friction damage, and the heat generated by the conductors is difficult to dissipate quickly. In addition, the hoses only serve the function of water delivery, and their structural strength and heat dissipation capabilities are not fully utilized. These shortcomings restrict the operational efficiency and safety of firefighting drones under high-altitude, long-duration, and heavy-load conditions. Utility Model Content

[0003] This utility model addresses the above-mentioned problems and overcomes the shortcomings of existing technologies by providing a layout structure for the hoses and cables of an unmanned aerial vehicle (UAV) fire truck.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] This utility model provides a layout structure for a fire truck hose and cable, including a fire truck and a drone. The drone is mounted on the upper part of the fire truck body. The drone is equipped with a fire extinguishing water spray pipe, which is connected to the fire truck's water pump via a hose. The drone is connected to a chassis DC power supply at the bottom of the fire truck body via a cable, and the drone is powered by the chassis DC power supply. The cable contains only one positive conductor. The hose includes an outer layer, a negative conductor, and an inner lining layer. The negative conductor is located between the outer layer and the inner lining layer and is woven together with the outer layer.

[0006] Furthermore, the fire truck has a parking space on its upper body for parking drones, and the top of the parking space is equipped with an openable cover.

[0007] Furthermore, the length of both the hose and cable is greater than or equal to 100 meters, and the hose and cable are stored in the body of the fire truck; when the drone is lifted, the hose and cable will rise along with the drone.

[0008] Furthermore, the outer jacket is a tubular outer jacket woven from polyester filaments and polyester staple fibers, the negative polarity wire and the positive polarity wire are both made of copper wire, and the inner lining is an inner rubber tube made of polyurethane.

[0009] Furthermore, the two ends of the water hose are respectively crimped with terminals of negative polarity wires, which are used to connect to the drone and the chassis DC power supply, respectively.

[0010] Furthermore, the drone uses a 650V DC power supply provided by the chassis DC power supply.

[0011] Furthermore, the drone is a drone group composed of multiple propeller-driven drones.

[0012] The beneficial effects of this utility model are:

[0013] This utility model provides a layout structure for a drone fire truck hose and cable. By removing the negative polarity conductor from the cable and integrating it into the hose structure, it achieves three core advantages: (1) Significant weight reduction and efficiency improvement: The cable diameter is reduced, the weight is lowered, and the take-off height of the drone under a 400Kg load is effectively increased; (2) Active heat dissipation and structural reinforcement: The flowing medium inside the hose continuously removes the heat from the negative polarity conductor, avoiding the risk of overheating. At the same time, the copper conductor and polyester layer braiding improve the compressive strength of the hose; (3) Improved intrinsic safety: The physical isolation of the positive and negative conductors completely eliminates the risk of internal short circuits in the cable and prevents leakage accidents caused by wear of the outer layer. In summary, this layout optimizes the system's energy efficiency ratio and high-altitude operation reliability while ensuring stable 650V DC power supply and high-pressure water delivery. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the layout structure of the water hose and cable of a drone fire truck according to this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of a drone fire truck with a water hose and cable layout according to the present invention.

[0016] Figure 3 This is a schematic diagram of the hose structure of a drone fire truck with a layout of hoses and cables.

[0017] Figure 4 This is an enlarged structural diagram of the water hose cross-section of a fire truck with a layout structure of water hose and cable according to the present invention.

[0018] The markings in the diagram are: 1 for fire truck, 2 for parking space, 3 for cable, 4 for hose, 5 for fire sprinkler pipe, 6 for drone; 401 for outer layer, 402 for negative polarity conductor, and 403 for inner lining. Detailed Implementation

[0019] To make the technical problems solved, the technical solutions, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] Based on the DC power usage standard of UAV 6: The DC power supply from the chassis of fire truck 1 to UAV 6 uses two wires, a positive wire and a negative wire 402, forming a closed loop; the DC current direction is constant, and energy transmission can be completed with only two wires. Therefore, in the existing technology, the cables 3 used all have two wires inside (i.e., a positive wire and a negative wire 402), so the diameter of cable 3 is greater than 60mm, and the two wires occupy a large space and weight in cable 3; moreover, they also release a large amount of heat during operation. When UAV 6 takes off, as the weight of cable 3 increases with the height, it will hinder the takeoff height of UAV 6 to a certain extent.

[0021] In view of the above problems, the present invention solves the above problems by removing the negative polarity wire 402 in the cable 3 and by setting the negative polarity wire 402 in the pipe wall of the water hose 4 that supplies water to the drone 6.

[0022] Specifically, in combination Figures 1 to 4 As shown in the figure, the present invention provides a layout structure for a drone fire truck hose and cable, including a fire truck 1 and a drone 6. The drone 6 is mounted on the upper part of the fire truck 1. The drone 6 is equipped with a fire extinguishing water spray pipe 5, which is connected to the water pump of the fire truck 1 via a hose 4. The drone 6 is connected to the chassis DC power supply at the bottom of the fire truck 1 via a cable 3, and the drone 6 is powered by the chassis DC power supply. The cable 3 contains only one positive polarity wire. The hose 4 includes an outer layer 401, a negative polarity wire 402, and an inner lining layer 403. The negative polarity wire 402 is disposed between the outer layer 401 and the inner lining layer 403, and the negative polarity wire 402 is woven together with the outer layer 401.

[0023] The water hose 4 serves to provide water for the fire-fighting water spray pipe 5 on the drone 6; the DC power supply of the chassis of the fire truck 1 and the cable 3 provide sufficient power for the drone 6 when it is hovering in the air; unlike conventional drones, this drone 6 can hover at high altitudes for a long time, and the DC power supply of the chassis provides DC power for the drone 6, while conventional drones need to return to the ground when they run out of power while hovering.

[0024] In some embodiments of this utility model, the upper part of the fire truck 1 is provided with a parking space 2, which is used for parking the drone 6. The top of the parking space 2 is provided with an openable cover. When in use, the openable cover is opened, the drone 6 is raised, and the height of the drone 6 can reach more than 100 meters.

[0025] In some embodiments of this utility model, the lengths of the water hose 4 and the cable 3 are both greater than or equal to 100 meters, and the water hose 4 and the cable 3 are stored in the body of the fire truck 1; when the drone 6 is lifted, the water hose 4 and the cable 3 will rise along with the drone 6.

[0026] In some embodiments of this utility model, the outer jacket 401 is a tubular jacket woven from polyester filaments and polyester staple fibers, the negative polarity conductor 402 and the positive polarity conductor are both woven from copper wire, and the inner lining layer 403 is an inner rubber tube made of polyurethane. The water hose 4, composed of the tubular jacket woven from polyester filaments and polyester staple fibers and the inner rubber tube made of polyurethane, has the characteristics of pressure resistance, wear resistance, corrosion resistance, water impermeability, low water flow resistance, fast water output, lightweight and softness, and long service life. Then, the negative polarity conductor 402 is woven together with the outer jacket 401, so that the heat dissipated by the negative polarity conductor 402 during operation can be carried away by the liquid in the water hose 4, which plays a role in heat dissipation for the negative polarity conductor 402. At the same time, the cable 3 only has one positive polarity conductor. Since one negative polarity conductor 402 is eliminated from the cable 3, the diameter of the cable 3 will be greatly reduced, which can be halved to greater than 30mm; the material required to make the cable 3 will be reduced, thereby effectively reducing the weight of the cable 3 as a whole.

[0027] In some embodiments of this utility model, the two ends of the water hose 4 are respectively crimped with terminals of negative polarity wires 402, which are used to connect to the UAV 6 and the chassis DC power supply, respectively.

[0028] In some embodiments of this utility model, the UAV 6 uses a DC power supply with a DC voltage of 650V provided by the chassis DC power supply.

[0029] In some embodiments of this utility model, the drone 6 is a drone group composed of eight propeller-driven drones.

[0030] In summary, this invention separates the positive and negative conductors 402. The positive conductor remains within the cable 3, while the negative conductor 402 is woven together with the polyester filaments and staple fibers of the water hose 4. This allows the negative conductor 402 to dissipate heat through the liquid in the water hose 4, and also increases the strength of the water hose 4. The cable 3 itself eliminates one negative conductor 402 (i.e., ground wire). Separating the positive and negative conductors 402 saves material compared to a concentrated arrangement, resulting in a lighter overall weight. The maximum load of the drone 6 is 400 kg; the reduced weight of the cable 3 allows the drone 6 to fly at higher altitudes. Furthermore, under extreme conditions, wear on the outer rubber tubing of the cable 3 could lead to contact between the positive and negative terminals, causing leakage or short circuits. This novel cable 3 and water hose 4 layout eliminates this risk, making the overall system safer and eliminating the risk of leakage.

[0031] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

Claims

1. A fire-fighting unmanned aerial vehicle water hose and cable layout structure, characterized in that: The system includes a fire truck and a drone. The drone is mounted on the upper part of the fire truck. The drone is equipped with a fire-extinguishing water spray pipe, which is connected to the fire truck's water pump via a hose. The drone is connected to the chassis DC power supply at the bottom of the fire truck via a cable, and the drone is powered by the chassis DC power supply. The cable has only one positive conductor, and the hose includes an outer layer, a negative conductor, and an inner lining. The negative conductor is located between the outer layer and the inner lining, and the negative conductor is woven together with the outer layer.

2. The unmanned aerial vehicle fire fighting truck water hose and cable layout structure according to claim 1, characterized in that: The fire truck has a parking space on the upper part of its body, which is used to park drones. The top of the parking space is equipped with an openable cover.

3. The unmanned aerial vehicle fire fighting truck water hose and cable layout structure according to claim 1, characterized in that: The length of both the hose and cable is greater than or equal to 100 meters, and the hose and cable are stored in the body of the fire truck; when the drone is lifted, the hose and cable will rise along with the drone.

4. The unmanned aerial vehicle fire fighting truck water hose and cable layout structure according to claim 1, characterized in that: The outer jacket is a tubular outer jacket woven from polyester filaments and polyester staple fibers, and both the negative and positive polarity wires are made of copper wire. The inner lining is an inner rubber tube made of polyurethane.

5. The unmanned aerial vehicle fire fighting truck water hose and cable layout structure according to claim 4, characterized in that: The two ends of the water hose are respectively crimped with terminals for negative polarity wires, which are used to connect to the drone and the chassis DC power supply.

6. The unmanned aerial vehicle fire apparatus hose and cable layout structure of claim 1, wherein: The drone uses a 650V DC power supply provided by the chassis DC power supply.

7. The layout structure of the hose and cable of the unmanned aerial vehicle fire truck according to claim 1, characterized in that: The drone is a drone group composed of multiple propeller-driven drones.

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