Pipe cable and fire fighting truck

Abstract

The utility model relates to the technical field of fire fighting, and provides a pipe cable and a fire fighting truck, the pipe cable is used for water and electricity mixed transmission of a fire-fighting unmanned aerial vehicle, the pipe cable comprises an inner pipe, an outer pipe and a plurality of fixing assemblies, and the inner pipe is used for transmitting a fire extinguishing agent; the outer pipe sleeves the outer side of the inner pipe, and a cable penetrates through a space between the inner pipe and the outer pipe; the fixing assemblies are arranged at intervals in the length direction of the inner pipe, each fixing assembly comprises an inner fixing part and an outer fixing part, the inner fixing parts are arranged between the inner pipe and the outer pipe in a sleeving mode, the outer fixing parts are arranged on the outer side of the outer pipe in a sleeving mode, and the positions of the inner fixing parts correspond to the positions of the outer fixing parts; the inner fixing piece is suitable for abutting against the outer fixing piece so as to fix the cable and the outer pipe. The pipe cable provided by the embodiment of the utility model is used for overcoming the defects that the pipe cable is too heavy and low in flexibility, the inner pipe, the outer pipe and the cable are restrained by adopting the inner fixing piece and the outer fixing piece which are arranged at intervals, a steel wire layer does not need to be woven tediously, the overall weight of the pipe cable can be reduced, the flexibility of the pipe cable is improved, and later maintenance is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of fire fighting, and in particular to a pipe cable and a fire fighting truck. Background Art

[0002] With the development of fire fighting technology, fire trucks equipped with drone fire extinguishing systems have been put into use. When drones are operating at high altitudes, fire trucks need to supply fire extinguishing agents through pipes and cables, which also need to assume the functions of power transmission and control signal transmission. Existing pipes and cables are generally double-layer nested structures of outer sheath and inner water pipe, and telecommunications transmission is achieved by passing wires between the outer sheath and the inner water pipe. However, with the complexity of the fire fighting environment, drones need to rise higher and higher, resulting in longer and longer pipes and cables. The gap between the inner water pipe and the outer sheath for passing wires is large and long. In order to ensure the stability of the pipe and cable, it is generally necessary to weave a thicker steel wire layer on the outer wall of the inner pipe. However, the steel wire layer will cause the weight of the pipe and cable to be too heavy, reduce flexibility, and reduce the maintainability of the pipe and cable, making it inconvenient for the later maintenance of the pipe and cable. Summary of the invention

[0003] A first aspect of an embodiment of the present invention provides a pipe-cable to solve the defects of excessive weight and low flexibility of pipes and cables in the prior art. Internal and external fixings arranged at intervals are used to constrain the inner tube, outer tube and cable, and there is no need to cumbersomely weave steel wire layers. The overall weight of the pipe-cable can be reduced, the flexibility of the pipe-cable can be improved, and later maintenance is facilitated.

[0004] A second aspect of an embodiment of the present invention provides a fire truck.

[0005] The pipe cable provided in the first aspect of the embodiment of the present invention is used for water and telecommunication hybrid transmission of a firefighting drone, and the pipe cable comprises:

[0006] an inner tube for conveying the fire extinguishing agent;

[0007] An outer tube is sleeved on the outer side of the inner tube, and the space between the inner tube and the outer tube is used for passing cables;

[0008] A plurality of fixing components are arranged at intervals along the length direction of the inner tube, and the fixing components include an inner fixing member and an outer fixing member. The inner fixing member is sleeved between the inner tube and the outer tube, and the outer fixing member is sleeved on the outside of the outer tube. The positions of the inner fixing member and the outer fixing member correspond to each other. The inner fixing member is suitable for abutting against the outer fixing member to fix the cable and the outer tube.

[0009] According to the pipe and cable provided in an embodiment of the present invention, the inner fixing member includes a body and a first wire duct, the body is sleeved between the inner tube and the outer tube, the first wire duct is arranged on the outside of the body and extends along the length direction of the body, the number of the first wire duct corresponds to the number of the cables, and the first wire duct is used to limit the movement of the cables along the circumference of the inner tube.

[0010] According to the pipe and cable provided in an embodiment of the present invention, the external fixing member includes a strip, a clamp seat and a fastener, one end of the strip is fixedly connected to the clamp seat, and the other end of the strip is wrapped around the outer tube and arranged on the clamp seat; the fastener is arranged on the clamp seat, and the fastener is used to adjust the tightness of the strip.

[0011] The pipe cable provided according to an embodiment of the present invention also includes a pipe joint, which includes a connecting part and a fixing part. The end of the inner tube is sleeved on the fixing part, and the fixing part and the inner tube are interference fit; the connecting part is arranged on a side of the fixing part away from the inner tube.

[0012] According to the tube cable provided by the embodiment of the present invention, at least one circle of protrusions is provided on a side of the fixing portion facing the inner tube.

[0013] The tube cable provided according to an embodiment of the present invention further includes a metal wire, which is spirally wound around the outer side of the inner tube. The position of the metal wire corresponds to the position of the fixing portion, and the metal wire is suitable for abutting against the fixing portion to fix the inner tube.

[0014] According to the pipe and cable provided in an embodiment of the present invention, the pipe joint also includes a wire bundling portion, which is arranged between the connecting portion and the fixing portion; the wire bundling portion is provided with a plurality of second wire bundling grooves on a side facing the inner tube, and the number of the second wire bundling grooves corresponds to the number of the cables, and the second wire bundling grooves are used to limit the circumferential movement of the cables along the pipe joint.

[0015] According to the pipe cable provided by the embodiment of the present invention, the diameter of the wire bundling portion gradually decreases along the direction from the connecting portion toward the fixing portion.

[0016] The pipe cable provided according to an embodiment of the present invention further includes a pipe clamp, which is sleeved on the outside of the inner pipe, the position of the pipe clamp corresponds to the position of the wire harness portion, and the pipe clamp is used to limit the movement of the cable in a direction away from the wire harness portion.

[0017] A fire truck provided in a second aspect of an embodiment of the present invention comprises a vehicle body, a drone and the pipe cable described in any one of the preceding embodiments, one end of the pipe cable being connected to the vehicle body, and the other end of the pipe cable being connected to the drone.

[0018] The pipe and cable provided in the embodiment of the present invention has fixing components arranged at intervals, so that the positions of the inner pipe and the cable can be constrained by the fixing components, and the inner pipe, outer pipe and the cable are integrated to ensure the stability of the pipe and cable; in addition, the inner pipe and the outer pipe are in a fixed relationship formed by the abutment of the inner fixing member and the outer fixing member, so that in the later maintenance process, the damaged inner pipe, outer pipe or cable can be easily replaced or repaired by removing the inner fixing member and the outer fixing member at the target damaged position, and there is no need to disassemble the pipe and cable as a whole, which saves time and effort, greatly facilitates the later maintenance of the pipe and cable, and increases the usable life of the pipe and cable.

[0019] Compared with the prior art, the pipe and cable provided in the embodiment of the present invention uses internal fixings and external fixings arranged at intervals to constrain the inner pipe, outer pipe and cable, and does not need to cumbersomely weave the steel wire layer, thereby reducing the difficulty of processing and assembling the pipe and cable and reducing the overall weight of the pipe and cable; in addition, since the internal fixings and the external fixings are arranged at intervals, the overall flexibility of the pipe and cable will not be affected; furthermore, the steel wire layer is difficult to disassemble and assemble later, and once the pipe and cable need to be repaired, the pipe and cable need to be disassembled as a whole, resulting in a high cost of re-maintenance of the pipe and cable, while the internal fixings and the external fixings are easy to disassemble and assemble, and in the case where part of the pipe and cable is damaged, they only need to be removed in a targeted manner, which is convenient for later maintenance, greatly reducing the later maintenance cost of the pipe and cable and improving the versatility and practicality of the pipe and cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 is a schematic diagram of the overall structure of the pipe and cable provided in an embodiment of the present invention;

[0022] Figure 2 is a schematic structural diagram of an internal fixing member provided by an embodiment of the present invention;

[0023] Figure 3 is a schematic structural diagram of a pipe and cable from another perspective provided by an embodiment of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of a pipe joint provided in an embodiment of the present invention.

[0025] Reference numerals:

[0026] 100: cable; 200: inner tube; 300: outer tube; 400: fixing assembly; 410: inner fixing member; 411: body; 412: first cable duct; 420: outer fixing member; 421: strip; 422: fastener; 500: pipe joint; 510: connecting part; 520: fixing part; 521: protrusion; 530: cable duct; 531: second cable duct; 600: metal wire; 700: pipe clamp; 800: joint. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0029] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0031] Figure 1 is a schematic diagram of the overall structure of the pipe and cable provided in an embodiment of the present invention;

[0032] See also Figure 1 A first aspect of an embodiment of the present invention provides a pipe cable, which is used for water, telecommunications and hybrid transmission of fire-fighting drones. The pipe cable includes an inner pipe 200, an outer pipe 300 and a plurality of fixing components 400, wherein the inner pipe 200 is used to transmit a fire extinguishing agent. The inner pipe 200 may be an integral pipe or may be obtained by connecting a plurality of identical pipes end to end. Specifically, an adaptive design may be performed according to the actual required length of the inner pipe 200, that is, the supply and delivery distance of the fire extinguishing agent, and the embodiment of the present invention does not specifically limit this.

[0033] In a specific example, the inner tube 200 can be obtained by connecting two fire water bags with a length of 60m, an inner diameter of 65mm, and a pressure resistance of 1Mpa. It should be noted that the material of the inner tube 200 can be adaptively selected according to actual conditions, such as rubber material or plastic material.

[0034] The outer tube 300 is sleeved on the outside of the inner tube 200, and a penetration space is limited between the outer tube 300 and the inner tube 200. The cable 100 can be arranged between the inner tube 200 and the outer tube 300 through the penetration space. In other words, the cable 100 is penetrated between the inner tube 200 and the outer tube 300. The outer tube 300 is used to protect the inner tube 200 and the cable 100. The material of the outer tube 300 can be the same as or different from that of the inner tube 200. The length and inner diameter of the outer tube 300 can be adaptively designed according to the length and inner diameter of the inner tube 200, and the embodiment of the present invention does not make specific limitations on this.

[0035] It should be noted here that the cable 100 can be an electrical cable or an optical cable, or other transmission lines for transmitting electrical energy or signals. Multiple cables 100 can be evenly arranged along the circumference of the inner tube 200. Specifically, they can be adaptively selected according to actual conditions.

[0036] A plurality of fixing components 400 are arranged at intervals along the length direction of the inner tube 200. The fixing components 400 include an inner fixing member 410 and an outer fixing member 420. The inner fixing member 410 is sleeved between the inner tube 200 and the outer tube 300, and the outer fixing member 420 is sleeved on the outside of the outer tube 300. The position of the inner fixing member 410 corresponds to the position of the outer fixing member 420. The inner fixing member 410 is suitable for abutting against the outer fixing member 420 to fix the cable 100 and the outer tube 300. In an optional embodiment of the present invention, when a plurality of fire water bags are docked to form an inner tube 200, the inner fixing member 410 can also serve as a nozzle to connect two adjacent inner tubes 200. In this case, a guide cone can be processed at the end of the inner fixing member 410 to facilitate the docking of the inner tube 200. Specifically, it can be adaptively designed according to actual conditions, and the embodiments of the present invention will not be repeated here.

[0037] See also Figure 1 It can be understood that the pipe and cable provided in the embodiment of the present invention has the fixing components 400 arranged at intervals, so that the positions of the inner pipe 200 and the cable 100 can be constrained by the fixing components 400, and the inner pipe 200, the outer pipe 300 and the cable 100 are integrated to ensure the stability of the pipe and cable; in addition, the inner pipe 200 and the outer pipe 300 are in a fixed relationship formed by the abutment of the inner fixing member 410 and the outer fixing member 420, so that in the later maintenance process, the inner fixing member 410 and the outer fixing member 420 at the target damaged position can be removed, and the damaged inner pipe 200, outer pipe 300 or cable 100 can be easily replaced or repaired, and there is no need to disassemble the pipe and cable as a whole, which saves time and effort, greatly facilitates the maintenance of the pipe and cable in the later period, and improves the usable life of the pipe and cable.

[0038] Compared with the prior art, the pipe-cable provided in the embodiment of the present invention adopts the inner fixing parts 410 and the outer fixing parts 420 arranged at intervals to constrain the inner tube 200, the outer tube 300 and the cable 100, and there is no need to cumbersomely weave the steel wire layer, which reduces the difficulty of processing and assembling the pipe-cable and reduces the overall weight of the pipe-cable; in addition, since the inner fixing parts 410 and the outer fixing parts 420 are arranged at intervals, the overall flexibility of the pipe-cable is not affected; furthermore, the steel wire layer is difficult to disassemble and assemble later, and once the pipe-cable needs to be repaired, the pipe-cable needs to be disassembled as a whole, resulting in a high cost of re-maintenance of the pipe-cable, while the inner fixing parts 410 and the outer fixing parts 420 are easy to disassemble and assemble. In the case where part of the pipe-cable is damaged, it only needs to be removed in a targeted manner, which is convenient for later maintenance, greatly reduces the later maintenance cost of the pipe-cable, and improves the versatility and practicality of the pipe-cable.

[0039] Figure 2 It is a schematic structural diagram of an internal fixing member provided by an embodiment of the present invention.

[0040] See also Figure 2In an optional embodiment of the present invention, the inner fixing member 410 includes a body 411 and a first cable tie groove 412, and the body 411 is sleeved between the inner tube 200 and the outer tube 300. Figure 2 As shown, the inner tube 200 is tubular in shape, and its inner diameter is adapted to the outer diameter of the inner tube 200 . The material of the body 411 can be selected to be metal or non-metal, and specifically, it can be adaptively selected according to actual conditions.

[0041] It should be noted that the thickness of the body 411 needs to be equivalent to the spacing between the inner tube 200 and the outer tube 300 to ensure the stability between the inner tube 200 and the outer tube 300. The first cable trough 412 extends along the length direction of the body 411. In other words, the first cable trough 412 extends along the length direction of the inner tube 200. The first cable trough 412 is arranged on the outside of the body 411, that is, the side of the body 411 facing the outer tube 300. The depth of the first cable trough 412 matches the diameter of the cable 100, and the number of the first cable troughs 412 corresponds to the number of cables 100. In this way, the first cable trough 412 can constrain the movement of the cable 100 along the circumferential direction of the inner tube 200, and can also protect the cable 100 to prevent the cable 100 from being damaged by the abutment between the inner fixing member 410 and the outer fixing member 420.

[0042] Continue reading Figure 1 In an optional embodiment of the present invention, the outer fixing member 420 includes a strip 421, a clamp seat and a fastener 422. One end of the strip 421 is fixedly connected to the clamp seat, and the other end of the strip 421 is suitable for being fixed to the clamp seat after being wound around the outer tube 300. The fastener 422 is arranged on the clamp seat. It can be understood that the tightness of the strip 421 can be adjusted through the cooperation of the clamp seat and the fastener 422 to adjust the abutment force between the inner fixing member 410 and the outer fixing member 420. The material of the strip 421 can be metal or non-metal, and can be adaptively selected according to actual conditions.

[0043] It should be noted here that one internal fixing member 410 may correspond to one or more external fixing members 420. Figure 1 The example given is a case where one inner fixing member 410 corresponds to four outer fixing members 420. It is understandable that multiple outer fixing members 420 can make the stress on the inner fixing member 410 more uniform, so as to avoid damage to the outer tube 300 or the cable 100 due to uneven stress.

[0044] Figure 3 is a schematic structural diagram of a pipe and cable from another perspective provided by an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure of a pipe joint provided in an embodiment of the present invention.

[0045] See also Figure 3 and Figure 4 In an optional embodiment of the present invention, the pipe joint 500 includes a connecting portion 510 and a fixing portion 520. The pipe joint 500 is a pipe fitting, and its inner cavity is communicated with the inner tube 200 for conveying a fire extinguishing agent. The end of the inner tube 200 is sleeved on the fixing portion 520, and the connecting portion 510 is arranged on a side of the fixing portion 520 away from the inner tube 200. The fixing portion 520 and the inner tube 200 are interference fit. In this way, during assembly, the inner tube 200 can be simply fixedly connected to the pipe joint 500, and the problem of seepage generated in the gap between the inner tube 200 and the pipe joint 500 can be solved at the same time; the connecting portion 510 is used to connect with other components, such as a drone or a quick connector 800, etc. Specifically, it can be adaptively selected according to actual conditions.

[0046] Continue reading Figure 4 In an optional embodiment of the present invention, at least one circle of protrusions 521 is provided on the side of the fixing portion 520 facing the inner tube 200. In other words, at least one circle of protrusions 521 is provided on the outer side of the fixing portion 520. In the case where multiple circles of protrusions 521 are provided, multiple protrusions 521 can be arranged at intervals. It should be noted here that the height of the protrusions 521 needs to be adaptively designed according to the diameter of the inner tube 200, and the degree of deformability of the inner tube 200 needs to be considered. Specifically, it can be adaptively designed according to actual conditions. It can be understood that the inner tube 200 provided in the embodiment of the present invention can increase the contact area between the fixing portion 520 and the inner tube 200 and improve the sealing between the inner tube 200 and the fixing portion 520 by providing at least one circle of protrusions 521. In addition, the abutment between the protrusions 521 and the inner tube 200 can also play a role in blocking liquid, so as to avoid the problem of liquid seepage along the wall of the inner tube 200 or the fixing portion 520.

[0047] Continue reading Figure 3 In an optional embodiment of the present invention, the tube cable further comprises a metal wire 600, which is spirally wound around the outer side of the inner tube 200, and the position of the metal wire 600 corresponds to the position of the fixing portion 520. The metal wire 600 is suitable for abutting against the fixing portion 520 to fix the inner tube 200. It is easy to understand that the metal wire 600 is easy to deform and has good tightness after winding. By providing the metal wire 600, the reliability of the fixation between the inner tube 200 and the pipe joint 500 can be further enhanced.

[0048] Continue reading Figure 4In an optional embodiment of the present invention, the pipe joint 500 also includes a wiring harness portion 530, which is arranged between the connecting portion 510 and the fixing portion 520. The wiring harness portion 530 is provided with a plurality of second wiring harness grooves 531, and the number of the second wiring harness grooves 531 corresponds to the number of cables 100. It can be understood that the second wiring harness grooves 531 can limit the movement of the end of the cable 100 along the circumferential direction of the pipe joint 500 to ensure the neatness of the cable 100; in addition, the second wiring harness grooves 531 are similar to the first wiring harness grooves 412, and can be used to accommodate the cables 100 to prevent the cables 100 from being damaged during the abutment process between the pipe joint 500 and other components.

[0049] Continue reading Figure 4 In an optional embodiment of the present invention, the diameter of the harness portion 530 gradually decreases along the direction from the connecting portion 510 to the fixing portion 520. In some optional examples, the outer surface of the harness portion 530 can be set to a conical surface, with the large end of the conical surface facing the connecting portion 510. It can be understood that in this way, the position of the harness groove on the outer surface of the pipe joint 500 can be higher than the surface of the connecting portion 510, and the extension line of the cable 100 can be higher than the connecting portion 510. In this way, when the connecting portion 510 is connected to other components, such as a drone, it can be avoided that the end of the cable 100 is too close to the inner tube 200, resulting in position interference between the end of the cable 100 and the drone. The end of the cable 100 is higher than the connecting portion 510, that is, the end of the cable 100 is higher than the outer surface of the pipe joint 500. In this way, space can be provided for the cable 100 to bend, so as to avoid the cable 100 end needing to bend at a larger angle in order to bypass the connecting portion 510, thereby improving the durability of the cable 100.

[0050] See also Figures 1 to 3 In an optional embodiment of the present invention, a pipe clamp 700 is further included. The pipe clamp 700 is sleeved on the outside of the inner tube 200. The position of the pipe clamp 700 corresponds to the position of the wiring harness portion 530. Specifically, the position from the inside to the outside is the wiring harness portion 530, the cable 100, the inner tube 200 and the pipe clamp 700. The pipe clamp 700 is used to limit the movement of the cable 100 in a direction away from the wiring harness portion 530; the pipe clamp 700 includes a hoop, a first pipe clamp and a second pipe clamp. The hoop is sleeved on the wiring harness portion 530. One end of the first pipe clamp and the second clamp are hinged, and the other end is connected by a fastener after embracing the hoop. It can be understood that the fastener can be used to facilitate the adjustment of the tightness of the hoop and the tightness between the pipe clamp 700 and the inner tube 200.

[0051] The second aspect of the present invention provides a fire truck, which includes a vehicle body 411, a drone and the pipe cable described in any of the aforementioned embodiments, one end of the pipe cable is connected to the vehicle body 411, and the other end of the pipe cable is connected to the drone. The vehicle body 411 can provide fire extinguishing agent and electrical energy to the drone through the pipe cable, and control the operation of the drone through the pipe cable.

[0052] It should be noted that the technical solutions in various embodiments of the present utility model can be combined with each other, but the basis for the mutual combination is that it can be implemented by ordinary technicians in the field; when the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist, that is, it does not belong to the protection scope of the present utility model.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pipe cable, characterized in that: Used for water and telecommunication hybrid transmission of firefighting drones, the pipe cable includes: An inner tube (200) for transmitting a fire extinguishing agent; An outer tube (300) is sleeved on the outer side of the inner tube (200), and a space between the inner tube (200) and the outer tube (300) is used for passing a cable (100); A plurality of fixing components (400) are arranged at intervals along the length direction of the inner tube (200), and the fixing components (400) include an inner fixing member (410) and an outer fixing member (420). The inner fixing member (410) is sleeved between the inner tube (200) and the outer tube (300), and the outer fixing member (420) is sleeved on the outside of the outer tube (300). The positions of the inner fixing member (410) and the outer fixing member (420) correspond to each other. The inner fixing member (410) is suitable for abutting against the outer fixing member (420) to fix the cable (100) and the outer tube (300).

2. The umbilical cable according to claim 1, characterized in that: The inner fixing member (410) includes a main body (411) and a first cable duct (412); the main body (411) is sleeved between the inner tube (200) and the outer tube (300); the first cable duct (412) is arranged on the outer side of the main body (411) and extends along the length direction of the main body (411); the number of the first cable duct (412) corresponds to the number of the cables (100); the first cable duct (412) is used to limit the circumferential movement of the cables (100) along the inner tube (200).

3. The umbilical cable according to claim 1, characterized in that: The external fixing member (420) comprises a strip (421), a clamp seat and a fastener (422); one end of the strip (421) is fixedly connected to the clamp seat, and the other end of the strip (421) is wound around the outer tube (300) and arranged on the clamp seat; the fastener (422) is arranged on the clamp seat, and the fastener (422) is used to adjust the tightness of the strip (421).

4. The umbilical cable according to any one of claims 1 to 3, characterized in that: The invention also comprises a pipe joint (500), wherein the pipe joint (500) comprises a connecting portion (510) and a fixing portion (520), wherein the end of the inner tube (200) is sleeved on the fixing portion (520), and an interference fit is formed between the fixing portion (520) and the inner tube (200); and the connecting portion (510) is arranged on a side of the fixing portion (520) away from the inner tube (200).

5. The umbilical cable according to claim 4, characterized in that The fixing portion (520) is provided with at least one circle of protrusions (521) on a surface facing the inner tube (200).

6. The umbilical cable according to claim 4, characterized in that It also includes a metal wire (600), which is spirally wound on the outside of the inner tube (200), and the position of the metal wire (600) corresponds to the position of the fixing portion (520). The metal wire (600) is suitable for abutting against the fixing portion (520) to fix the inner tube (200).

7. The umbilical cable according to claim 4, characterized in that The pipe joint (500) further comprises a wire harness portion (530), wherein the wire harness portion (530) is arranged between the connecting portion (510) and the fixing portion (520); a plurality of second wire harness grooves (531) are arranged on a side of the wire harness portion (530) facing the inner tube (200), wherein the number of the second wire harness grooves (531) corresponds to the number of the cables (100), and the second wire harness grooves (531) are used to limit the circumferential movement of the cables (100) along the pipe joint (500).

8. The umbilical cable according to claim 7, characterized in that Along the direction from the connecting portion (510) toward the fixing portion (520), the diameter of the wire harness portion (530) gradually decreases.

9. The umbilical cable according to claim 7, characterized in that It also includes a pipe clamp (700), which is sleeved on the outside of the inner tube (200), and the position of the pipe clamp (700) corresponds to the position of the wiring harness portion (530). The pipe clamp (700) is used to limit the movement of the cable (100) in a direction away from the wiring harness portion (530).

10. A fire truck, characterized in that: The fire truck comprises a vehicle body, a drone and the umbilical cable according to any one of claims 1 to 9, one end of the umbilical cable is connected to the vehicle body, and the other end of the umbilical cable is connected to the drone.

Images