Portable fire hose laying box

Abstract

The invention discloses a portable fire hose laying box, which relates to fire fighting accessories, and comprises a mounting rack and a laying box body detachably arranged on the mounting rack, as well as two connecting turntables respectively arranged on two sides of the mounting rack; the at least three connecting rods are arranged in an arc shape, one end of each connecting rod is rotatably arranged in the connecting turntable, and the other end of each connecting rod is connected with an arc-shaped bearing plate; through cooperative use of the arc-shaped bearing plates, the laying box can be stably supported, moving balance is guaranteed, damage to a water hose caused by shaking is avoided, firefighters pull the driving racks during rescue for going upstairs and downstairs, the distance between the arc-shaped bearing plates can be increased to form a proper opening, stair steps with different heights and widths can be adapted, the laying box can smoothly move conveniently, and the rescue effect is good. Compared with a hand-held water hose carrying device, the portable water hose carrying device relieves the burden of firefighters, saves physical power, improves rescue efficiency, and also can reduce the problems of water hose falling, disorder and the like possibly caused by hand holding.

Description

Technical Field

[0001] The present invention relates to the technical field of fire-fighting accessories, and particularly to a portable fire hose laying box. Background Technique

[0002] A fire hose is a flexible hose used to transport high-pressure water or flame-retardant liquids such as foam. Traditional fire hoses have a rubber inner lining and are wrapped with linen fabric on the outer surface. Advanced fire hoses are made of polymeric materials such as polyurethane. Both ends of the fire hose are equipped with metal connectors, which can be connected to another hose to extend the distance or to a nozzle to increase the liquid spraying pressure. When carrying the existing fire hoses, it is not convenient enough and the efficiency is low. Usually, people carry two coils by hand or carry the folded hose on the shoulder to climb the stairs. If the distance is far or the floor is high, firefighters need to carry it back and forth or multiple firefighters carry it together, resulting in a low efficiency of hose laying.

[0003] The existing Chinese patent (Publication No.: CN219333059U) discloses a portable fire hose storage device, including a storage box body and a crank; the overall shape of the storage box body is concave, and a grip plate is arranged inside the storage box body. The grip plate divides the storage box body into left and right two chambers, and a winding mechanism for winding the fire hose is arranged inside each chamber. Through the provided winding device, the limit that firefighters can only carry two coils of hoses by hand during fire fighting and rescue is broken through. On the basis of carrying two coils, other equipment can be carried, improving the personnel efficiency, achieving the effect of rapid laying, reducing hose curling, saving time, and improving the laying efficiency.

[0004] During the use of the above storage device, by storing the fire hose in the box body, when in use, firefighters can carry it by hand, and multiple can be carried at one time, thus facilitating the connection of the water source at the fire scene. At the fire scene, firefighters need to carry the box body to move, especially when running on foot, the weight of the box body becomes a huge burden. Especially during the fire rescue of some small high-rise buildings, firefighters often need to carry heavy boxes up the stairs for a long time to transport the fire hose. At this time, carrying the heavy box body and climbing the stairs with a heavy load for a long time will undoubtedly consume the physical strength of firefighters and bring certain troubles to the subsequent rescue.

[0005] Therefore, we designed a portable fire hose laying box to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a portable fire hose laying box to solve the problems raised in the above background technique.

[0007] To solve the above technical problems, a portable fire hose laying box provided by the present invention includes a mounting frame and a laying box body detachably arranged on the mounting frame, including,

[0008] Two connecting turntables are respectively arranged on both sides of the mounting frame;

[0009] There are at least three connecting rods, which are arranged in an arc shape. One end of the connecting rod is rotatably arranged in the connecting turntable, and the other end is connected with an arc-shaped bearing plate. A driving member for driving the connecting rod to rotate is arranged in the connecting turntable;

[0010] The three arc-shaped bearing plates are arranged in an arc shape and jointly form a wheel shape. When the connecting rod rotates relative to the connecting turntable, the distance between adjacent arc-shaped bearing plates increases, forming an opening that can accommodate the steps of a staircase;

[0011] A first driven gear is rotatably connected to one side of the connecting turntable. A driving rack is meshed and connected to one side of the first driven gear, which is used to monitor the height of the staircase. When the driving rack is stretched, the first driven gear rotates synchronously to adjust the size of the opening.

[0012] Further, the driving member includes,

[0013] A driving shaft is rotatably connected in the connecting turntable. A driving gear is connected to the driving shaft. At least three driven gears are meshed and connected to the driving gear. The three driven gears are circumferentially arranged around the center of the driving shaft. One end of the connecting rod is connected to the driven gear and rotates synchronously with the driven gear.

[0014] Further, a buffer assembly is also included,

[0015] An arc-shaped buffer plate is slidably arranged on one side of the arc-shaped bearing plate. A damper is connected inside the arc-shaped bearing plate. The telescopic end of the damper is connected to the bottom of the arc-shaped buffer plate. A first return spring is sleeved on the damper. One end of the first return spring is connected inside the arc-shaped bearing plate, and the other end is connected to the arc-shaped buffer plate.

[0016] Further, a linkage assembly is also arranged on the connecting turntable, including,

[0017] A mounting frame is connected to the connecting turntable. A third driven gear is rotatably connected inside the mounting frame. The third driven gear is meshed with one side of the driving rack. A mounting rack is meshed and connected to the other side of the third driven gear. A storage box is connected inside the mounting frame. The bottom of the mounting rack is connected with an extrusion plate. The extrusion plate is slidably connected inside the storage box. The storage box is communicated with each damper through a connecting pipe.

[0018] Further, a fixed plate is connected inside the connecting turntable. A first telescopic rod is slidably connected inside the fixed plate. The other end of the first telescopic rod is connected with a clamping block, which is used to limit the first driven gear. A second return spring is sleeved on the first telescopic rod. One end of the second return spring is connected to the fixed plate, and the other end is connected to the fixed plate.

[0019] Further, a short connecting rod is connected to one side of the fixed plate. A limiting block is clamped on the short connecting rod, which is used to control the telescopic state of the first telescopic rod.

[0020] Further, a first guiding rod is connected to one side of the driving rack. The first guiding rod is slidably connected inside the mounting frame. A second guiding rod is connected to one side of the mounting rack. The second guiding rod is slidably connected to the mounting frame.

[0021] Further, a clamping ring is connected to one side of the laying box body. A limiting bolt is arranged on the clamping ring, which is used to limit the clamping ring. The clamping ring and the limiting bolt are used in combination to fix the laying box body on the mounting rack.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. On flat ground, the arc-shaped bearing plate can stably support the laying box in cooperation, ensuring moving balance and avoiding damage to the water hose caused by shaking. When the firefighters pull the driving rack when going up and down the stairs during rescue, the distance between the arc-shaped bearing plates can be increased to form a suitable opening, adapting to the steps of stairs with different heights and widths, facilitating the smooth movement of the laying box. Compared with the hand-held water hose carrying device, it reduces the burden on the firefighters, saves physical strength, improves the rescue efficiency, and can also reduce problems such as the water hose dropping and getting chaotic caused by hand-carrying.

[0024] 2. Through the slidable design of the arc-shaped buffer plate, relative displacement can occur when impacted, compressing the damper and the return spring, effectively buffering the impact force generated by the collision between the arc-shaped bearing plate and the stairs, avoiding the impact force being transmitted to the arms of the firefighters, and reducing the physical burden on the firefighters.

[0025] 3. By monitoring the height of the stairs through the driving rack and synchronously adjusting the opening size of the arc-shaped bearing plate, it is convenient for the laying box to move on the stairs. Utilizing the linkage of the driving rack, the third driven gear, the mounting rack, and the extrusion plate, the hydraulic oil pressure of the damper can be adjusted according to the situation of the stairs. This function of conveniently adjusting the buffering force synchronously according to the height of the stairs can make the damper generate greater resistance when the impact force is transmitted, effectively consuming energy and enhancing the buffering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is the front view of the present invention;

[0028] Figure 3 is the schematic diagram of the bottom structure of the present invention;

[0029] Figure 4 is the schematic diagram of the internal structure of the connection turntable in the present invention;

[0030] Figure 5 is the schematic diagram of the internal structure of the installation frame in the present invention;

[0031] Figure 6 is Figure 4 the enlarged view of the structure at A in;

[0032] Figure 7 is Figure 5 the enlarged view of the structure at B in;

[0033] Figure 8 is Figure 5 the enlarged view of the structure at C in;

[0034] Figure 9 is Figure 1 the enlarged view of the structure at D in.

[0035] In the figure: 1. mounting rack; 2. laying box body; 301. connection turntable; 302. connecting rod; 303. arc-shaped bearing plate; 304. driving rack; 305. first driven gear; 401. driving shaft; 402. driving gear; 403. second driven gear; 501. arc-shaped buffer plate; 502. damper; 503. first return spring; 601. installation frame; 602. third driven gear; 603. storage box; 604. installation rack; 605. extrusion plate; 7. fixing plate; 8. first telescopic rod; 9. clamping block; 10. second return spring; 11. limiting block; 12. first guide rod; 13. second guide rod; 14. second telescopic rod; 15. indicating plate; 16. clamping ring; 17. limiting bolt; 18. servo motor. Specific Embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figure 1-9, the present invention provides a technical solution: a portable fire hose laying box, including a mounting frame 1 and a laying box body 2 detachably arranged on the mounting frame 1, including,

[0038] Connecting turntables 301, two in number, are respectively arranged on both sides of the mounting frame 1;

[0039] Connecting rods 302, at least three in number, are arranged in an arc shape. One end of the connecting rod 302 is rotatably arranged in the connecting turntable 301, and the other end is connected with an arc-shaped bearing plate 303. A driving member for driving the connecting rod 302 to rotate is arranged in the connecting turntable 301;

[0040] The three arc-shaped bearing plates 303 are arranged in an arc shape and jointly form a wheel-like state. When the connecting rod 302 rotates relative to the connecting turntable 301, the distance between adjacent arc-shaped bearing plates 303 increases, forming an opening that can accommodate the steps of the stairs;

[0041] A first driven gear 305 is rotatably connected to one side of the connecting turntable 301. A driving rack 304 is meshed and connected to one side of the first driven gear 305 for monitoring the height of the stairs. When the driving rack 304 is stretched, the first driven gear 305 rotates synchronously to adjust the size of the opening.

[0042] It should be noted that the laying box body 2 can be used to store fire fighting materials for rescue such as hose connectors, tool bags, and hoses.

[0043] Preferably, to more quickly and conveniently move the laying box body 2 by firefighters, the servo motor 18 can be used to drive the rotation of the rotating shaft, and then both ends of the rotating shaft are connected to the connecting turntable 301 to rotate, making it more labor-saving for firefighters to go up and down the stairs.

[0044] During specific implementation, the three arc-shaped bearing plates 303 jointly form a wheel-like structure. This structure can stably support the entire laying box on a flat ground and realize normal movement. During normal movement, the relative position relationship between the arc-shaped bearing plates 303 remains relatively stable, ensuring the balance and stability of the laying box;

[0045] When it is necessary to go up and down the stairs for rescue, firefighters can drive the first driven gear 305 to rotate by pulling the driving rack 304, and then the driving member in the connecting turntable 301 drives the connecting rod 302 to rotate relative to the connecting turntable 301. Due to the rotation of the connecting rod 302, the distance between adjacent arc-shaped bearing plates 303 will gradually increase, thus forming an opening that can accommodate the steps of the stairs. The size of this opening is related to the rotation angle of the connecting rod 302. As the rotation angle increases, the opening can adapt to the steps of stairs with different heights and widths, enabling the laying box body 2 to move smoothly on the stairs. This setting is more convenient and labor-saving compared to the portable hose carrying device.

[0046] Reference Figure 6 , the driving member includes,

[0047] The drive shaft 401 is rotatably connected within the connecting turntable 301. A drive gear 402 is connected to the drive shaft 401. At least three drive gears 402 are meshed with the drive gear 402. The three drive gears 402 are circumferentially arrayed around the center of the drive shaft 401. One end of the connecting rod 302 is connected to the drive gear 402 and rotates synchronously with the drive gear 402.

[0048] During specific implementation, the rotatably arranged drive shaft 401 can drive the drive gear 402 to rotate. Subsequently, the drive gear 402 can drive the second driven gear 403 to rotate. Then, the connecting rod 302 connected to the second driven gear 403 can drive the arc-shaped bearing plate 303 to adjust the opening size.

[0049] Refer to Figures 4 to 8 , it further includes a buffer assembly,

[0050] The arc-shaped buffer plate 501 is slidably arranged on one side of the arc-shaped bearing plate 303. A damper 502 is connected within the arc-shaped bearing plate 303. The telescopic end of the damper 502 is connected to the bottom of the arc-shaped buffer plate 501. A first return spring 503 is sleeved on the damper 502. One end of the first return spring 503 is connected within the arc-shaped bearing plate 303, and the other end is connected to the arc-shaped buffer plate 501.

[0051] It should be noted that a buffer airbag can be connected to one side of the arc-shaped buffer plate 501 to further enhance the buffering effect.

[0052] During specific implementation, when the arc-shaped bearing plate 303 goes up and down the stairs, it will collide with the stairs. Therefore, a buffer assembly is designed to buffer the impact force and prevent the generated resonance from being transmitted to the arms of the firefighters. The arc-shaped buffer plate 501 is first subjected to the impact force. Since the arc-shaped buffer plate 501 is slidably arranged on one side of the arc-shaped bearing plate 303, it will displace relative to the arc-shaped bearing plate 303 under the action of the impact force. The displacement of the arc-shaped buffer plate 501 will compress the damper 502 and the first return spring 503. The first return spring 503 and the damper 502 work together to more effectively buffer impact forces of different intensities and reduce damage to the firefighters and the fire hose inside the laying box body 2.

[0053] Refer to Figure 7 , the connecting turntable 301 is also provided with a linkage assembly, including,

[0054] The installation frame 601 is connected to the connecting turntable 301. A third driven gear 602 is rotatably connected inside the installation frame 601. The third driven gear 602 meshes with one side of the driving rack 304. The other side of the third driven gear 602 is meshed and connected with an installation rack 604. A storage tank 603 is connected inside the installation frame 601. The bottom of the installation rack 604 is connected with a pressing plate 605. The pressing plate 605 is slidably connected inside the storage tank 603. The storage tank 603 is communicated with each damper 502 through a connecting pipe.

[0055] It should be noted that during the use process, when the staircase is higher, the greater the height difference, the greater the impact force transmitted. Therefore, a linkage component is designed.

[0056] Furthermore, to facilitate better determination of the height of the staircase, a second telescopic rod 14 can be connected to the top of the driving rack 304, and the telescopic end of the second telescopic rod 14 is connected with an indicating plate 15 for indication.

[0057] During specific implementation, first, the driving rack 304 set can be used to monitor the height of the staircase and synchronously adjust the opening size between the two arc-shaped bearing plates 303. During the adjustment process of the driving rack 304, the linear motion of the driving rack 304 drives the third driven gear 602 to rotate. The other side of the third driven gear 602 meshes with the installation rack 604. The rotational motion of the third driven gear 602 drives the installation rack 604 to perform a linear motion. The pressing plate 605 connected to the bottom of the installation rack 604 moves synchronously with the installation rack 604. Since the pressing plate 605 is slidably connected inside the storage tank 603, the movement of the installation rack 604 will cause the pressing plate 605 to displace inside the storage tank 603, squeezing the hydraulic oil stored in the storage tank 603. When more hydraulic oil enters the damper 502 under higher pressure, the flow characteristics of the hydraulic oil inside the damper 502 change;

[0058] According to the working principle of the damper 502, the hydraulic oil flows through specific channels or valves inside the damper 502. The increase in pressure will cause the hydraulic oil to generate greater resistance during the flow process. This setting can synchronously adjust the magnitude of the buffering force according to the height of the staircase. During the impact force transmission process, a greater damping force can more effectively consume the energy of the impact force and reduce the impact on the laying box body 2 and the internal fire hose.

[0059] Refer to Figure 7 Inside the connecting turntable 301, a fixing plate 7 is connected. Inside the fixing plate 7, a first telescopic rod 8 is slidably connected. The other end of the first telescopic rod 8 is connected with a clamping block 9. The clamping block 9 is used to limit the first driven gear 305. A second return spring 10 is sleeved on the first telescopic rod 8. One end of the second return spring 10 is connected to the fixing plate 7, and the other end is connected to the fixing plate 7.

[0060] During specific implementation, to avoid the reverse rotation of the first driven gear 305.

[0061] During specific implementation, after the position adjustment of the first driven gear 305 is completed, the second return spring 10 can drive the latch 9 to engage with the first driven gear 305 by its elastic force to limit the first driven gear 305 and prevent it from reversing. When it is necessary to disengage it, the second return spring 10 can be pulled to drive the latch 9 to be out of contact with the first driven gear 305.

[0062] Reference Figure 7 , a short connecting rod is connected to one side of the fixing plate 7, and a limiting block 11 is clamped on the short connecting rod. The limiting block 11 is used to control the telescopic state of the first telescopic rod 8.

[0063] During specific implementation, the set limiting block 11 can be clamped on the short connecting rod to limit the position of the latch 9, thereby avoiding the movement interference of the latch 9 on the first driven gear 305 when the first driven gear 305 rotates.

[0064] Reference Figure 7 , a first guide rod 12 is connected to one side of the driving rack 304. The first guide rod 12 is slidably connected in the mounting frame 601. A second guide rod 13 is connected to one side of the mounting rack 604. The second guide rod 13 is slidably connected to the mounting frame 601.

[0065] During specific implementation, the set first guide rod 12 can limit and guide the sliding of the driving rack 304, further improving the stability of the driving rack 304 during sliding, while the set second guide rod 13 facilitates the limiting and guiding of the sliding of the mounting rack 604.

[0066] Reference Figure 1 and Figure 9 , a clamping ring 16 is connected to one side of the laying box body 2. The limit bolt 17 is used to limit the clamping ring 16. The clamping ring 16 and the limit bolt 17 are used together to fix the laying box body 2 on the mounting frame 1.

[0067] It should be noted that the entire mounting frame 1 can be a folding mechanism, which is convenient for storage when not in use. Its folding mechanism is a prior art, so no further description will be given here.

[0068] During specific implementation, the set clamping ring 16 and limit bolt 17 are used together to fix the laying box body 2 on the mounting frame 1.

[0069] Working principle: When in use, the three arc-shaped bearing plates 303 together form a wheel-shaped structure, which can stably support the entire laying box on a flat ground to achieve normal movement. During normal movement, the relative positions of the arc-shaped bearing plates 303 remain stable, ensuring the balance and stability of the laying box;

[0070] When it is necessary to go up and down the stairs for rescue, the firefighters can drive the first driven gear 305 to rotate by pulling the driving rack 304, and then the driving part in the connecting turntable 301 drives the connecting rod 302 to rotate relative to the connecting turntable 301. Due to the rotation of the connecting rod 302, the distance between adjacent arc-shaped bearing plates 303 will gradually increase, thus forming an opening that can accommodate the stair steps. The size of this opening is related to the rotation angle of the connecting rod 302. As the rotation angle increases, the opening can adapt to stair steps of different heights and widths, enabling the laying box body 2 to move smoothly on the stairs. This setting is more convenient and labor-saving compared to the portable hose carrying device;

[0071] During the process of the arc-shaped bearing plate 303 going up and down the stairs, it will collide with the stairs. Therefore, a buffer assembly is designed to buffer the impact force and prevent the generated resonance from being transmitted to the firefighters' arms. The arc-shaped buffer plate 501 is first subjected to the impact force. Since the arc-shaped buffer plate 501 is slidably arranged on one side of the arc-shaped bearing plate 303, it will displace relative to the arc-shaped bearing plate 303 under the action of the impact force. The displacement of the arc-shaped buffer plate 501 will compress the damper 502 and the first return spring 503. The first return spring 503 and the damper 502 work together to more effectively buffer impact forces of different intensities and reduce damage to the firefighters and the fire hose inside the laying box body 2;

[0072] The driving rack 304 is provided to monitor the height of the stairs and synchronously adjust the size of the opening between the two arc-shaped bearing plates 303. During the adjustment process of the driving rack 304, the linear motion of the driving rack 304 drives the third driven gear 602 to rotate. The other side of the third driven gear 602 meshes with the mounting rack 604. The rotational motion of the third driven gear 602 drives the mounting rack 604 to perform a linear motion. The pressing plate 605 connected to the bottom of the mounting rack 604 moves synchronously with the mounting rack 604. Since the pressing plate 605 is slidably connected in the storage tank 603, the movement of the mounting rack 604 will cause the pressing plate 605 to displace in the storage tank 603, squeezing the hydraulic oil stored in the storage tank 603. When more hydraulic oil enters the damper 502 under higher pressure, the flow characteristics of the hydraulic oil inside the damper 502 change;

[0073] According to the working principle of the damper 502, the hydraulic oil flows through specific channels or valves within the damper 502. The increase in pressure will cause the hydraulic oil to generate greater resistance during the flow process. This setting can synchronously adjust the magnitude of the buffering force according to the height of the stairs. During the impact force transmission process, the greater damping force can more effectively consume the energy of the impact force and reduce the impact on the laying box body 2 and the internal fire hose.

Claims

1. A portable fire hose laying box, comprising a mounting frame (1) and a laying box body (2) detachably mounted on the mounting frame (1), characterized in that: include, Two connecting turntables (301) are respectively arranged on two sides of the mounting frame (1); There are at least three connecting rods (302) arranged in an arc shape, one end of the connecting rod (302) is rotatably arranged in the connecting turntable (301), and the other end is connected to the arc-shaped bearing plate (303), and a driving member for driving the connecting rod (302) to rotate is arranged in the connecting turntable (301); The three arc-shaped bearing plates (303) are arranged in an arc shape and together form a wheel-shaped state. When the connecting rod (302) rotates relative to the connecting rotating disk (301), the distance between adjacent arc-shaped bearing plates (303) increases, forming an opening that can accommodate stair steps; The first driven gear (305) is rotatably connected to one side of the connecting turntable (301), and one side of the first driven gear (305) is meshedly connected with a driving rack (304) for monitoring the height of the stairs. When the driving rack (304) is stretched, the first driven gear (305) rotates synchronously to adjust the size of the opening.

2. A portable fire hose laying box as claimed in claim 1, characterized in that: The driving member comprises: A driving shaft (401) is rotatably connected in the connecting turntable (301); a driving gear (402) is connected to the driving shaft (401); at least three driving gears (402) are meshedly connected to the driving gear (402); the three driving gears (402) are distributed in a circular array with the center of the driving shaft (401) as the center; one end of the connecting rod (302) is connected to the driving gear (402) and rotates synchronously with the driving gear (402).

3. A portable fire hose laying box as claimed in claim 1, characterized in that: Also includes a buffer component, The arc-shaped buffer plate (501) is slidably arranged on one side of the arc-shaped bearing plate (303); a damper (502) is connected inside the arc-shaped bearing plate (303); a telescopic end of the damper (502) is connected to the bottom of the arc-shaped buffer plate (501); a first return spring (503) is sleeved on the damper (502); one end of the first return spring (503) is connected inside the arc-shaped bearing plate (303), and the other end is connected to the arc-shaped buffer plate (501).

4. A portable fire hose laying box as claimed in claim 3, characterized in that: The connecting turntable (301) is also provided with a linkage assembly, including: The mounting frame (601) is connected to the connecting turntable (301), and a third driven gear (602) is rotatably connected inside the mounting frame (601). The third driven gear (602) is meshed with one side of the driving rack (304), and the other side of the third driven gear (602) is meshed with the mounting rack (604). A storage box (603) is connected inside the mounting frame (601), and an extrusion plate (605) is connected to the bottom of the mounting rack (604). The extrusion plate (605) is slidably connected inside the storage box (603), and the storage box (603) is interconnected with each damper (502) through a connecting pipe.

5. A portable fire hose laying box as claimed in claim 1, characterized in that: The connecting turntable (301) is connected to a fixed plate (7), and a first telescopic rod (8) is slidably connected to the fixed plate (7). The other end of the first telescopic rod (8) is connected to a clamping block (9), and the clamping block (9) is used to limit the first driven gear (305). The first telescopic rod (8) is sleeved with a second return spring (10), and one end of the second return spring (10) is connected to the fixed plate (7), and the other end is connected to the fixed plate (7).

6. A portable fire hose laying box as claimed in claim 5, characterized in that: One side of the fixing plate (7) is connected to a short-circuit rod, and a limit block (11) is clamped on the short-circuit rod. The limit block (11) is used to control the telescopic state of the first telescopic rod (8).

7. A portable fire hose laying box as claimed in claim 4, characterized in that: One side of the driving rack (304) is connected to a first guide rod (12), and the first guide rod (12) is slidably connected in the installation frame (601); one side of the installation rack (604) is connected to a second guide rod (13), and the second guide rod (13) is slidably connected to the installation frame (601).

8. A portable fire hose laying box as claimed in claim 1, characterized in that: A clamping ring (16) is connected to one side of the laying box body (2), and a limiting bolt (17) is provided on the clamping ring (16). The limiting bolt (17) is used to limit the position of the clamping ring (16). The clamping ring (16) and the limiting bolt (17) are used in combination to fix the laying box body (2) on the mounting frame (1).

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