Multi-mode water cannon water spraying structure of fire-fighting robot

Abstract

The invention discloses a multi-mode water cannon water spraying structure of a fire-fighting robot, and belongs to the field of fire-fighting water cannon, and the multi-mode water cannon water spraying structure of the fire-fighting robot is characterized in that a water cannon body is arranged into a three-section structure comprising a first cannon barrel section, a second cannon barrel section and a third cannon barrel section; therefore, the fire-fighting robot has a reverse spraying function in the direction of the nozzle part through the inward spraying cavity and the first inclined spraying hole, namely, a reverse water shield wall protection mode for reversely protecting the fire-fighting robot body, and a forward water shield wall protection mode for forwardly protecting the fire-fighting robot body through the outward spraying cavity and the second inclined spraying hole, namely, a forward water shield wall protection mode for forwardly protecting the fire-fighting robot body. A fire extinguishing mode that a water spraying column is directly sprayed through an opening part of a nozzle part is adopted, so that the protection area of a spraying water shield wall of the water cannon body is further increased, and the probability that the fire-fighting robot body is burnt out and burnt out when flames facing the opposite direction of a water spraying nozzle strike in a complex fire scene is reduced; and the safety of the fire-fighting robot body during operation is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of fire-fighting water cannons, and more specifically to a multi-mode water cannon spraying structure of a fire-fighting robot. Background Art

[0002] In today's society, fire accidents occur frequently, posing a huge threat to people's lives and property. With the continuous advancement of science and technology, firefighting robots are playing an increasingly important role in fire fighting, and in the process of fire fighting, water cannons installed on firefighting robots for spraying water also play a very important role.

[0003] Although the water cannon structure on the existing fire-fighting robot is relatively small and complete and has many advantages in use, it can only spray water in two modes when spraying water, namely, one is a mode of directly spraying a water column through the end of the water cannon nozzle, which is used to accurately spray water on the fire point to achieve the effect of extinguishing the fire at the fire point, and the other is a mode of directly spraying water mist over a large area along the direction of the water cannon nozzle through the end of the water cannon nozzle, that is, forming a water shield wall mode, which is used to cool down the object or space along the direction of the water nozzle on a large area and protect the fire-fighting robot.

[0004] Although the water cannons with the above two modes of water spraying can solve the fire extinguishing and cooling tasks in most scenarios, when in a complex fire environment, since there is no spray cooling structure in the opposite direction of the water nozzle on the water cannon (reverse water shield wall mode), the flames in the opposite direction of the water nozzle can easily cause harm to the fire-fighting robot, and even burn or burn the fire-fighting robot. Therefore, it is inconvenient to use and has low safety. Therefore, we propose a multi-mode water cannon water spraying structure for a fire-fighting robot to solve the above problems. Summary of the invention

[0005] 1. Technical issues to be solved In view of the problems existing in the prior art, the purpose of the present invention is to provide a multi-mode water cannon water spraying structure of a fire-fighting robot, which arranges a water cannon body into a three-section structure of barrel section one, barrel section two and barrel section three, so that it has a reverse spray function through an inward spray chamber and an oblique spray hole one along the direction of the nozzle part, that is, a reverse water shield wall protection mode for reversely protecting the fire-fighting robot body, a spray function through an outward spray chamber and an oblique spray hole two along the direction of the nozzle part, that is, a forward water shield wall protection mode for forwardly protecting the fire-fighting robot body, and a fire extinguishing mode of directly spraying a water column through the opening of the nozzle part, which further increases the spray water shield wall protection area of ​​the water cannon body, reduces the probability of the fire-fighting robot body being burned or scorched when the flames in the opposite direction of the water nozzle are attacked in a complex fire scene, and greatly improves the safety of the fire-fighting robot body during operation.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A multi-mode water cannon water spraying structure of a fire-fighting robot, comprising a water cannon body, wherein the water cannon body comprises a barrel section 1, a barrel section 2 and a barrel section 3; The barrel section 1 is fixedly connected with an outer convex bowl portion 1, a pile seat portion and an inner support ring 1, an inner thread structure is provided on the inner edge of the outer convex bowl portion 1, and a plurality of oblique spray holes 1 are provided on the outer convex surface of the outer convex bowl portion 1; Both ends of the barrel section 2 are fixedly connected with an outer cone cover, an outer edge of the outer cone cover is provided with an external thread structure, and both ends of the barrel section 2 are also fixedly connected with an inner support ring 2 and an inner support ring 3 respectively; The barrel section three is fixedly connected with an outer convex bowl section two and a nozzle section, an inner thread structure is provided on the inner edge of the outer convex bowl section two, and a plurality of oblique spray holes two are provided on the outer convex surface of the outer convex bowl section two, and the inner two ends of the barrel section three are also fixedly connected with an inner support ring four and an inner support ring five respectively; The outer edges of the outer cone cover parts at both ends of the barrel section two are respectively threadedly connected to the inner edges of the outer convex bowl part one and the inner edges of the outer convex bowl part two, and an inward spray chamber and an outward spray chamber are formed between the barrel section one, the barrel section two and the barrel section three.

[0009] Furthermore, water jacket one, water jacket two and water jacket three are respectively sleeved inside the water cannon body located at the inward spray chamber, the outward spray chamber and the nozzle portion, and connecting parts are fixedly welded inside the water jacket one, the water jacket two and the water jacket three, and a plurality of water permeable holes are opened on the outer walls of the water jacket one and the water jacket two, one end of the water jacket one is in contact with the inner support ring two, and the other end of the water jacket one is in contact with the inner support ring one through a support spring one, one end of the water jacket two is in contact with the inner support ring four, and the other end of the water jacket two is in contact with the inner support ring three through a support spring two, one end of the water jacket three is in contact with the inner support ring five, and the other end of the water jacket three is in contact with the inner support ring four through a support spring three.

[0010] Furthermore, a pull rod 1 is fixedly connected inside the connecting piece located on the water jacket 3, a sealing plug is fixedly installed at one end of the pull rod 1, the end of the sealing plug is in contact with the nozzle of the nozzle part, the other end of the pull rod 1 passes through the outside of the pile seat part, and a water column control electric cylinder is fixedly installed on the barrel section 1, and the end of the telescopic rod of the water column control electric cylinder is fixedly installed with the other end of the pull rod 1 through a connecting plate 1.

[0011] Furthermore, a pull tube 2 is sleeved on the outer side of the pull rod 1, one end of the pull tube 2 is fixedly welded to the center of the connecting piece located on the water jacket 2, and the other end of the pull tube 2 passes through the outside of the pile seat part, and an external spray control electric cylinder is fixedly installed on the barrel section 1, and the end of the telescopic rod of the external spray control electric cylinder is fixedly installed to the other end of the pull tube 2 through a connecting plate 2.

[0012] Furthermore, a pull tube three is sleeved on the outside of the pull tube two, one end of the pull tube three is fixedly welded to the center of the connecting piece located on the water jacket one, and the other end of the pull tube three passes through the outside of the pile seat part, and an internal spray control electric cylinder is fixedly installed on the barrel section one, and the end of the telescopic rod of the internal spray control electric cylinder is fixedly installed to the other end of the pull tube three through a connecting plate three.

[0013] Furthermore, a firefighting robot body is arranged on one side of the water monitor body, and a water supply pipe is arranged on the firefighting robot body, and an end of the water supply pipe is fixedly mounted to one end of the barrel section.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of the present invention are: (1) This solution, by configuring the water monitor body to be a three-section structure of barrel section 1, barrel section 2 and barrel section 3, enables it to have a reverse spray function through the inward spray chamber and the oblique spray hole 1 along the direction of the nozzle, that is, a reverse water shield wall protection mode for reversely protecting the fire-fighting robot body, a spray function through the outward spray chamber and the oblique spray hole 2 along the direction of the nozzle, that is, a forward water shield wall protection mode for forwardly protecting the fire-fighting robot body, and a fire extinguishing mode of directly spraying a water column through the opening of the nozzle, thereby further increasing the spray water shield wall protection area of ​​the water monitor body, reducing the probability of the fire-fighting robot body being burned or roasted when the fire flames in the opposite direction of the water nozzle are attacked in a complex fire scene, and greatly improving the safety of the fire-fighting robot body during operation; (2) In this solution, since the pull rod 1, the pull tube 2 and the pull tube 3 are connected in a layered socket form, and the pull rod 1, the pull tube 2 and the pull tube 3 are independently controlled by the water column control electric cylinder, the external spray control electric cylinder and the internal spray control electric cylinder respectively, each water spray mode can be completed independently without interfering with each other, thereby improving the convenience of use and control. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the installation of the water monitor body of the present invention; Figure 2 It is a schematic diagram of the overall structure of the water monitor body of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure of the enlarged part of the middle area; Figure 4 This is a schematic diagram of the disassembled structure of the water monitor body of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the water monitor body of the present invention; Figure 6 It is a structural schematic diagram of a barrel section of the present invention; Figure 7 It is a structural schematic diagram of the second barrel section of the present invention; Figure 8 It is a schematic diagram of the third structure of the barrel section of the present invention; Fig. 9 It is a schematic diagram of sleeve connection of the pull rod 1, the pull tube 2 and the pull tube 3 of the present invention.

[0017] Description of the numbers in the figure: 1. Firefighting robot body; 101. Water supply pipe; 2. Water cannon body; 3. Gun barrel section 1; 301. External convex bowl section 1; 302. Pile seat section; 303. Internal support ring 1; 304. Oblique spray hole 1; 4. Gun barrel section 2; 401. Outer cone cover; 402. Inner support ring 2; 403. Inner support ring 3; 5. Barrel section three; 501. External convex bowl section two; 502. Nozzle section; 503. Oblique spray hole two; 504. Internal support ring four; 505. Internal support ring five; 6. Inward spray chamber; 7. Outward spray chamber; 8. Water jacket one; 9. Water jacket two; 901. Water permeable hole; 10. Water jacket three; 1001. Connecting piece; 11. Support spring one; 12. Support spring two; 13. Support spring three; 14. Pull rod one; 15. Sealing plug; 16. Water column control electric cylinder; 17. Connecting piece one; 18. Pull pipe two; 19. External spray control electric cylinder; 20. Connecting piece two; 21. Pull pipe three; 22. Internal spray control electric cylinder; 23. Connecting piece three. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the specification of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0019] Embodiment 1:

[0020] See also Figure 1-Figure 9 , a multi-mode water cannon water spraying structure of a fire fighting robot, comprising a water cannon body 2, the water cannon body 2 comprising a barrel section 1 3, a barrel section 2 4 and a barrel section 3 5; The barrel section 3 is fixedly connected with an outer convex bowl portion 301, a pile seat portion 302 and an inner support ring 303. An inner thread structure is provided on the inner edge of the outer convex bowl portion 301, and a plurality of oblique spray holes 304 are provided on the outer convex surface of the outer convex bowl portion 301. Both ends of the barrel section 2 4 are fixedly connected with an outer cone cover 401, an outer thread structure is provided on the outer edge of the outer cone cover 401, and the inner ends of the barrel section 2 4 are also fixedly connected with an inner support ring 2 402 and an inner support ring 3 403 respectively; The barrel section 3 5 is fixedly connected with an outer convex bowl section 2 501 and a nozzle section 502, an inner thread structure is provided on the inner edge of the outer convex bowl section 2 501, and a plurality of oblique spray holes 2 503 are provided on the outer convex surface of the outer convex bowl section 2 501, and an inner support ring 4 504 and an inner support ring 5 505 are fixedly connected at both ends of the barrel section 3 5; The outer edges of the outer cone cover parts 401 at both ends of the barrel section 2 4 are respectively threadedly connected with the inner edges of the outer convex bowl part 1 301 and the inner edges of the outer convex bowl part 2 501, and an inward spray chamber 6 and an outward spray chamber 7 are formed between the barrel section 1 3, the barrel section 2 4 and the barrel section 3 5; The water jacket 1 8, water jacket 2 9 and water jacket 3 10 are respectively sleeved inside the water cannon body 2 located at the positions of the inward spray chamber 6, the outward spray chamber 7 and the nozzle part 502, and the water jackets 1 8, the water jackets 2 9 and the water jackets 3 10 are all fixedly welded with connecting pieces 1001, and the outer walls of the water jackets 1 8 and the water jackets 2 9 are provided with a plurality of water permeable holes 901, one end of the water jacket 1 8 is in contact with the inner support ring 2 402, and the other end of the water jacket 1 8 is in contact with the inner support ring 1 303 through the support spring 1 11, one end of the water jacket 2 9 is in contact with the inner support ring 4 504, and the other end of the water jacket 2 9 is in contact with the inner support ring 3 403 through the support spring 2 12, one end of the water jacket 3 10 is in contact with the inner support ring 5 505, and the other end of the water jacket 3 10 is in contact with the inner support ring 4 504 through the support spring 3 13; A tie rod 14 is fixedly connected inside the connecting piece 1001 located on the water jacket 3 10, a sealing plug 15 is fixedly installed at one end of the tie rod 14, the end of the sealing plug 15 contacts the nozzle of the nozzle part 502, the other end of the tie rod 14 passes through the outside of the pile seat part 302, a water column control electric cylinder 16 is fixedly installed on the barrel section 3, and the end of the telescopic rod of the water column control electric cylinder 16 is fixedly installed with the other end of the tie rod 14 through a connecting piece 17; A pull tube 2 18 is sleeved on the outside of the pull rod 14, one end of the pull tube 2 18 is fixedly welded to the center of the connecting piece 1001 located on the water jacket 2 9, and the other end of the pull tube 2 18 penetrates to the outside of the pile seat 302, and an external spray control electric cylinder 19 is fixedly installed on the barrel section 1 3, and the end of the telescopic rod of the external spray control electric cylinder 19 is fixedly installed with the other end of the pull tube 2 18 through the connecting piece 2 20; A pull tube 3 21 is sleeved on the outside of the pull tube 2 18, one end of the pull tube 3 21 is fixedly welded to the center of the connecting piece 1001 located on the water jacket 1 8, and the other end of the pull tube 3 21 passes through the outside of the pile seat 302. An internal spray control electric cylinder 22 is fixedly installed on the barrel section 1 3, and the end of the telescopic rod of the internal spray control electric cylinder 22 is fixedly installed with the other end of the pull tube 3 21 through the connecting piece 3 23; A firefighting robot body 1 is arranged on one side of the water cannon body 2, and a water supply pipe 101 is arranged on the firefighting robot body 1, and the end of the water supply pipe 101 is fixedly installed with the end of the barrel section 13.

[0021] When the multi-mode water cannon spraying structure of the fire-fighting robot executes the water spraying column mode along the direction of the nozzle: First, the water column control electric cylinder 16 is started, and the pull rod 14 is pulled outward by connecting the telescopic rod end of the water column control electric cylinder 16 with the connecting piece 17. At this time, the water jacket 3 10 and the pull rod 14 move in the same direction, and the water jacket 3 10 compresses the support spring 3 13. At the same time, the sealing plug 15 retreats to open the nozzle of the nozzle part 502. At this time, the high-pressure water inside the water supply pipe 101 can be sprayed out through the nozzles of the nozzle part 502 of the barrel section 1 3, the barrel section 2 4 and the barrel section 3 5 in sequence, thereby realizing a water column mode along the direction of the nozzle part 502. To stop spraying water, you only need to stop starting the water column control electric cylinder 16. At this time, the support spring 3 13 can rebound the water jacket 3 10, the pull rod 14 and the sealing plug 15 to their original positions, blocking the nozzle of the nozzle part 502.

[0022] Embodiment 2:

[0023] In view of the above embodiment 1, for further description, refer to Figure 1-Figure 9 When the multi-mode water cannon spraying structure of the fire-fighting robot executes the spraying mode along the direction of the nozzle: First, the external spray control electric cylinder 19 is started, and the extension rod end of the external spray control electric cylinder 19 is connected to the other end of the pull tube 18 through the connecting piece 20 to pull the pull tube 18 outward. At this time, the water jacket 29 and the pull tube 18 move in the same direction, and the water jacket 29 compresses the support spring 212. When the plurality of water permeable holes 901 on the water jacket 29 coincide with the inside of the external spray chamber 7, the high-pressure water in the water supply pipe 101 can pass through the barrel section 13, the barrel 14 and the barrel 15 in sequence. The second section 4 and the third section 5 of the barrel reach the inside of the outward spray chamber 7 and are sprayed outward through a plurality of inclined spray holes 503, thereby achieving a spray mode along the direction of the nozzle portion 502, that is, an outward water shield wall mode along the direction of the nozzle portion 502. To stop the outward water shield wall mode, it is only necessary to stop the start of the outward spray control electric cylinder 19. At this time, the support spring 12 can rebound the water jacket 9 and the pull tube 18 to their original positions, thereby causing the plurality of water permeable holes 901 on the water jacket 9 to be misaligned and disconnected from the inside of the outward spray chamber 7.

[0024] Embodiment 3:

[0025] In view of the above-mentioned embodiment 1 and embodiment 2, for further description, refer to Figure 1-Figure 9 When the multi-mode water cannon spraying structure of the fire-fighting robot executes the reverse spraying mode along the direction of the nozzle: First, the inner spray control electric cylinder 22 is started, and the extension rod end of the inner spray control electric cylinder 22 is connected to the other end of the pull tube 3 21 through the connection structure fixedly installed with the connection piece 3 23, so that the pull tube 3 21 can be pulled outward. At this time, the water jacket 18 and the pull tube 3 21 move in the same direction, and the water jacket 18 compresses the support spring 11. When the several water permeable holes 901 on the water jacket 18 coincide with the inside of the inner spray chamber 6, the high-pressure water in the water supply pipe 101 can pass through the barrel section 13 and the barrel section 2 in sequence. 4 and the barrel section three 5 reach the inside of the inward spray chamber 6 in the reverse direction, and are sprayed outwardly through the plurality of inclined spray holes 304, to achieve a reverse spray mode along the direction of the nozzle portion 502, that is, an inward water shield wall mode along the direction of the nozzle portion 502. To stop the inward water shield wall mode, it is only necessary to stop the start of the inner spray control electric cylinder 22. At this time, the support spring 11 can rebound the water jacket 8 and the pull tube three 21 to their original positions, so that the plurality of water permeable holes 901 on the water jacket 8 are dislocated and disconnected from the inside of the inward spray chamber 6.

[0026] Embodiment 4:

[0027] In view of the above-mentioned embodiment 1, embodiment 2 and embodiment 3, for further description, refer to Figure 1-Figure 9 When the multi-mode water cannon spraying structure of the fire-fighting robot executes three modes simultaneously: Based on the above, first, the water column control electric cylinder 16, the external spray control electric cylinder 19 and the internal spray control electric cylinder 22 are started simultaneously, and then the water jacket three 10, the water jacket two 9 and the water jacket one 8 are pulled outward at the same time through the connection of the pull rod one 14, the pull pipe two 18 and the pull pipe three 21, so that the sealing plug 15 stops blocking the nozzle of the nozzle part 502, and the several water-permeable holes 901 on the water jacket two 9 are overlapped and connected with the inside of the outward spray chamber 7, and when the several water-permeable holes 901 on the water jacket one 8 are overlapped and connected with the inside of the inward spray chamber 6, at this time, the high-pressure water in the water supply pipe 101 can pass through the inside of the barrel section one 3, the barrel section two 4 and the barrel section three 5 in turn, and be sprayed out at the nozzle of the nozzle part 502, several inclined spray holes two 503 are sprayed outward, and several inclined spray holes one 304 are sprayed outward, thereby achieving the effect of the above three modes working simultaneously.

[0028] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-mode water cannon spraying structure of a fire-fighting robot, comprising a water cannon body (2), characterized in that: The water cannon body (2) comprises a barrel section 1 (3), a barrel section 2 (4) and a barrel section 3 (5); The barrel section 1 (3) is fixedly connected with an outer convex bowl portion 1 (301), a pile seat portion (302) and an inner support ring 1 (303); an inner thread structure is provided on the inner edge of the outer convex bowl portion 1 (301), and a plurality of oblique spray holes 1 (304) are provided on the outer convex surface of the outer convex bowl portion 1 (301); Both ends of the barrel section 2 (4) are fixedly connected to an outer cone cover (401), an outer thread structure is provided on the outer edge of the outer cone cover (401), and the inner ends of the barrel section 2 (4) are also fixedly connected to an inner support ring 2 (402) and an inner support ring 3 (403) respectively; The barrel section three (5) is fixedly connected with an outer convex bowl section two (501) and a nozzle section (502), an inner edge of the outer convex bowl section two (501) is provided with an internal thread structure, and an outer convex surface of the outer convex bowl section two (501) is provided with a plurality of oblique spray holes two (503), and the inner ends of the barrel section three (5) are respectively fixedly connected with an inner support ring four (504) and an inner support ring five (505); The outer edges of the outer cone cover portion (401) at both ends of the barrel section two (4) are respectively threadedly connected to the inner edges of the outer convex bowl portion one (301) and the inner edges of the outer convex bowl portion two (501), and an inward spray chamber (6) and an outward spray chamber (7) are formed between the barrel section one (3), the barrel section two (4) and the barrel section three (5).

2. The multi-mode water cannon spraying structure of a fire-fighting robot according to claim 1, characterized in that: The water cannon body (2) located at the positions of the inward spray chamber (6), the outward spray chamber (7) and the nozzle portion (502) is respectively sleeved with a water jacket 1 (8), a water jacket 2 (9) and a water jacket 3 (10), and the water jacket 1 (8), the water jacket 2 (9) and the water jacket 3 (10) are all fixedly welded with a connecting piece (1001), the outer walls of the water jacket 1 (8) and the water jacket 2 (9) are each provided with a plurality of water permeable holes (901), one end of the water jacket 1 (8) is connected to the inner support ring 2 (4 02), the other end of the water jacket one (8) contacts the inner support ring one (303) through the support spring one (11), one end of the water jacket two (9) contacts the inner support ring four (504), the other end of the water jacket two (9) contacts the inner support ring three (403) through the support spring two (12), one end of the water jacket three (10) contacts the inner support ring five (505), and the other end of the water jacket three (10) contacts the inner support ring four (504) through the support spring three (13).

3. The multi-mode water cannon spraying structure of a fire-fighting robot according to claim 2, characterized in that: A pull rod one (14) is fixedly connected to the interior of the connecting piece (1001) located on the water jacket three (10), and a sealing plug (15) is fixedly installed on one end of the pull rod one (14), and the end of the sealing plug (15) contacts the nozzle of the nozzle part (502). The other end of the pull rod one (14) passes through the outside of the pile seat part (302), and a water column control electric cylinder (16) is fixedly installed on the barrel section one (3), and the end of the telescopic rod of the water column control electric cylinder (16) is fixedly installed with the other end of the pull rod one (14) through a connecting plate one (17).

4. The multi-mode water cannon spraying structure of a fire-fighting robot according to claim 3, characterized in that: A pull tube 2 (18) is sleeved on the outside of the pull rod 1 (14), one end of the pull tube 2 (18) is fixedly welded to the center of the connecting piece (1001) located on the water jacket 2 (9), and the other end of the pull tube 2 (18) passes through the outside of the pile seat (302). An external spray control electric cylinder (19) is fixedly installed on the barrel section 1 (3), and the telescopic rod end of the external spray control electric cylinder (19) is fixedly installed with the other end of the pull tube 2 (18) through a connecting plate 2 (20).

5. The multi-mode water cannon spraying structure of a fire-fighting robot according to claim 4, characterized in that: The outer side of the pull tube 2 (18) is sleeved with a pull tube 3 (21), one end of the pull tube 3 (21) is fixedly welded to the center of the connecting piece (1001) located on the water jacket 1 (8), and the other end of the pull tube 3 (21) passes through the outside of the pile seat (302). An internal spray control electric cylinder (22) is fixedly installed on the barrel section 1 (3), and the end of the telescopic rod of the internal spray control electric cylinder (22) is fixedly installed with the other end of the pull tube 3 (21) through a connecting plate 3 (23).

6. The multi-mode water cannon spraying structure of a fire-fighting robot according to claim 5, characterized in that: A firefighting robot body (1) is disposed on one side of the water cannon body (2), and a water supply pipe (101) is disposed on the firefighting robot body (1), and an end of the water supply pipe (101) is fixedly mounted to an end of the barrel section 1 (3).

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