A special intelligent power-assisted roller for mobile operation of airport fire hose

By designing an intelligent power roller for fire hoses, the problems of inconvenient laying of water hoses, frequent knotting and difficulty in rolling and collecting in the prior art are solved, and efficient and stable water hoses are dragged and stored, suitable for storage of fire truck equipment boxes and have fire-resistant and high-temperature resistance.

CN222693926UActive Publication Date: 2025-04-01CHENGDU SHUANGLIU INT AIRPORT
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Patent Information

Application Number
CN202420696169.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-07
Publication Date
2025-04-01
Estimated Expiration
2034-04-07

AI Technical Summary

Technical Problem

During the drag and laying process, existing fire hoses require assistance to adjust the angle of the rollers, which is inconvenient to operate, and it is easy to tie knots during throwing and laying, which is inefficient, the battle is slow to unfold, and it is difficult to retract the water hoses after the battle. When the water hoses are collected and put away, the rollers are easily dispersed, occupying a large space in the equipment box and the equipment is placed in a mess.

Method used

Design an intelligent assist roller for mobile operations of airport fire extinguishing water belts, including water belt support groove seats, horizontal load-bearing blocks, steering wheel support rods, universal wheels and power assist components. The power assist component adopts the form of electric power assist, which senses the changes in the running direction and center of gravity of the water belt through friction sensors and electronic control systems, provides electric power assist, reduces friction, and uses universal wheels and anti-slip materials to adapt to multi-directional drag and prevent rolling.

Benefits of technology

The power roller and the water belt are independent structures, which do not affect the storage and laying of the water belt. The electric power helps reduce friction. The universal wheel and anti-slip material ensure stable rolling. The overall size is small and easy to store. It has fire-resistant and high-temperature resistance and is suitable for multi-direction dragging.

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Abstract

The utility model relates to the technical field of auxiliary equipment for fire fighting, specifically to an intelligent power-assisted roller specially used for mobile operation of airport fire hoses, including a hose support groove seat, horizontal bearing blocks are installed on both sides of the hose support groove seat, steering wheel support rods are symmetrically installed at the bottom of the horizontal bearing blocks, universal wheels are movably installed on the inner side of the bottom of the steering wheel support rod, and a power-assisted assembly is arranged at the bottom of the horizontal bearing block, and the power-assisted assembly is used to provide electric power-assisted operation for the mobile operation of the hose. In the utility model, the power-assisted roller and the hose are two independent structures, which will not affect the normal laying of the hose during training and fire fighting; the roller adopts electric power-assisted form, and when dragging the hose, the roller will sense the running direction and center of gravity changes of the hose, and the roller will use the electric control system to provide power-assisted to the hose in the same direction, which greatly reduces the friction during the dragging of the hose.
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Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary equipment for fire fighting, in particular to an intelligent power-assisted roller specially used for mobile operation of airport fire-fighting hoses. Background Art

[0002] In recent years, civil aircraft fires have occurred frequently at home and abroad. Aircraft fire accidents are characterized by strong suddenness, rapid fire development, and difficulty in firefighting. When extinguishing aircraft engine fires and landing gear fires, fire trucks are often used to extinguish fires, and fire rescue personnel use water hoses to extinguish fires. At present, fire rescue personnel are using water hoses to extinguish fires. Civil transport airport professional fire brigades are generally equipped with water hoses. During firefighting and rescue or daily training, the water hoses are filled with water and are extremely heavy, making it inconvenient for firefighters to move the water hoses.

[0003] Patent document CN201410804752.3 applies for a fire hose with a roller, in which the fire hose and the roller are an integrated structure; in the process of dragging and laying the hose in this patent, people are required to assist in adjusting the angle of the roller so that the hose can roll on the ground, which is inconvenient to operate, and the hose is easy to get tangled when it is thrown and laid, which is inefficient and slow to start the battle, and it is difficult to reel up the hose after the battle; when the hose is retracted and released, due to the existence of the roller, the hose is folded or coiled, and after the hose is folded and placed on the fire truck, it is easy to spread out as the fire truck shakes, and it also has the disadvantages of occupying a large space in the equipment box and placing the equipment in a messy manner. Utility Model Content

[0004] One purpose of the present application is to provide an intelligent power-assisted roller specially designed for mobile operations of airport fire hoses, so as to solve the problem in the prior art that during the process of dragging and laying the hose, human assistance is required to adjust the roller angle so that the hose can roll on the ground, which is inconvenient to operate, and the hose is easily tangled during laying by throwing, which is inefficient and slow to start, and it is difficult to reel up the hose after the battle. When the hose is retracted or released, due to the existence of the roller, the hose is folded or coiled, and after the hose is folded and placed on the fire truck, it is easy to spread out as the fire truck shakes, and it also occupies a large space in the equipment box and the equipment is placed in a messy manner.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an intelligent power-assisted roller specially used for mobile operations of airport fire-fighting water hoses, comprising a water hose support groove seat, the groove diameter of the water hose support groove seat is 80 mm, horizontal bearing blocks are installed on both sides of the water hose support groove seat, steering wheel support rods are symmetrically installed at the bottom of the horizontal bearing blocks, a universal wheel is movably installed on the inner side of the bottom of the steering wheel support rod, and a power-assisted assembly is arranged at the bottom of the horizontal bearing block, and the power-assisted assembly is used to provide electric power assistance for the mobile operation of the water hose.

[0006] Preferably, the power-assisting assembly includes a control unit, a battery box and a motor. The control unit is installed on the top of the horizontal bearing block on the left, the battery box is installed on the bottom of the horizontal bearing block on the right, and a power battery is installed inside the battery box. A motor is installed in the middle of the universal wheel, and the motor is electrically connected to the battery box and the control unit.

[0007] Preferably, a friction sensor is installed at the inner center of the hose support groove seat.

[0008] Preferably, a Velcro bristle tape is installed at the center position of one side of the top of the left horizontal bearing block, and a Velcro round tape is installed at the center position of the other side of the top of the right horizontal bearing block.

[0009] Preferably, the outer sides of the two groups of horizontal bearing blocks are symmetrically provided with receiving grooves, the tops of the horizontal bearing blocks are symmetrically provided with sliding grooves, and the sliding grooves are connected with the receiving grooves.

[0010] Preferably, a rotating shaft is movably installed inside one side of the accommodating groove, a sliding block is slidably installed on the outside of the middle section of the rotating shaft, one side of the sliding block is connected to a limiting spring, and the limiting spring is located on the outside of the rotating shaft, one end of the limiting spring is connected to an inner wall of one side of the accommodating groove, a raised column is symmetrically installed on one side of the sliding block, a sliding column is installed on the top of the sliding block, and the sliding column is slidably connected to the sliding groove.

[0011] Preferably, a long strip is installed on the outside of one end of the rotating shaft, a slot is opened on one side of the long strip, and the slot matches the raised column, the first magnet blocks are symmetrically installed on the outside of the two groups of horizontal bearing blocks, and the first magnet blocks are located in front of the accommodating groove, a second magnet block is installed on one side of the long strip, and the second magnet block is magnetically attracted to the first magnet block, and a push handle is connected to one end of the long strip.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, the power-assist roller and the water hose are two independent structures, which will not affect the storage of the water hose during combat readiness, nor will it affect the normal laying of the water hose during training and firefighting. The roller adopts an electric power-assist form. When dragging the water hose, the roller will sense the running direction and center of gravity changes of the water hose, and the roller will use the electric control system to give the water hose the power in the same direction, greatly reducing the friction during the dragging of the water hose. The supporting platform of the roller and the water hose adopts a concave surface, so that the center of gravity is smaller, and the roller will not be dragged during the dragging of the water hose. Rolling occurs to ensure that the fire extinguishing process is continuous and effective; the overall size of the roller is small, and it can be directly stored in the equipment box of the fire truck, which is convenient to use; the roller has a fireproof design and is resistant to high temperatures when extinguishing fires at the scene; the roller adopts a universal wheel design, and the roller can always match the moving direction of the water hose during the multi-directional water hose dragging process; the supporting platform of the roller that contacts the water hose is made of anti-slip material, and the roller can effectively fit the water hose during the water hose dragging process, and the roller's electronic control system can effectively transmit the power to the water hose.

[0014] 2. In the utility model, when the power-assisted roller is used, the firefighter can slide the slide column inward to drive the slider to slide deep into the accommodating groove, so that the raised column on the slider withdraws from the inside of the slot, and slightly separates the first magnet block and the second magnet block to rotate the strip around the rotating shaft until the strip rotates ninety degrees, and then releases the slide column. The slider is reset under the elastic restoring force of the limit spring, so that the raised column is stuck in the slot to fix the strip. At this time, the firefighter can push the power-assisted roller device through the push handle at the top of the vertical strip; this makes it convenient for the firefighter to move the power-assisted roller, and at the same time, the strip can be fixed on both sides of the horizontal bearing block when it is not needed, thereby reducing the occupied space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a top sectional view of a horizontal bearing block of the utility model;

[0017] Figure 3 For the utility model Figure 2 A schematic diagram of the structure at A;

[0018] Figure 4 For the utility model Figure 3 An enlarged schematic diagram of the structure at location B.

[0019] In the figure: 1. hose support groove seat; 2. horizontal bearing block; 3. steering wheel support rod; 4. universal wheel; 5. control unit; 6. battery box; 7. friction sensor; 8. Velcro bristle belt; 9. Velcro round belt; 10. receiving groove; 11. slide groove; 12. rotating shaft; 13. slider; 14. limit spring; 15. raised column; 16. long strip; 17. card slot; 18. slide column; 19. first magnet block; 20. second magnet block; 21. push handle. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The following is combined with Figure 1-4 , the technical solution of the utility model is further explained:

[0024] Embodiment 1: Figure 1As shown, a special intelligent power-assisted roller for mobile operation of airport fire hose includes a hose support groove seat 1, the groove diameter of the hose support groove seat 1 is 80mm, horizontal bearing blocks 2 are installed on both sides of the hose support groove seat 1, the bottom of the horizontal bearing block 2 is symmetrically installed with a steering wheel support rod 3, and a universal wheel 4 is movably installed on the inner side of the bottom of the steering wheel support rod 3, and a power-assisted assembly is arranged at the bottom of the horizontal bearing block 2, and the power-assisted assembly is used to provide electric power assistance for the mobile operation of the hose. The power-assisted assembly includes a control unit 5, a battery box 6 and a motor, the control unit 5 is installed on the top of the horizontal bearing block 2 on the left, the bottom of the horizontal bearing block 2 on the right is installed with a battery box 6, and a power battery is installed inside the battery box 6, and a motor is installed in the middle of the universal wheel 4, and the motor is electrically connected to the battery box 6 and the control unit 5. A friction sensor 7 is installed in the inner center of the hose support groove seat 1. The hose support groove seat 1 provides a placement position for the hose and can provide support for the hose. The hose support groove seat 1 provides an installation position for the horizontal bearing block 2. The horizontal bearing block 2 provides an installation connection position for the steering wheel support rod 3. The steering wheel support rod 3 provides an installation position for the universal wheel 4, connects the universal wheel 4 and the horizontal bearing block 2, and provides support for the horizontal bearing block 2. The horizontal bearing block 2 provides an installation position for the power-assisting component, and plays a bearing and fixing role for the control unit 5, the power battery and the Velcro. The universal wheel 4 can support the entire power-assisting roller device and transmit the torque of traction and braking. The control unit 5 receives, analyzes and processes the data transmitted by the friction sensor 7, controls the motor output, and coordinates and manages the operating state of the entire power-assisting roller. The battery box 6 provides an installation position for the power battery. The electric energy stored in the power battery can provide electric energy to the motor when working. After receiving the command of the control unit 5, the motor in the middle of the universal wheel 4 converts the electric energy of the power battery into mechanical energy. The hose support groove seat 1 provides an installation position for the friction sensor 7. When the fire hose moves back and forth and rubs against the roller, the friction sensor 7 collects friction information and transmits the data to the control unit 5. When airport firefighters are putting out a fire, the fire hose can be placed on a special intelligent power-assisted roller. When the firefighters need to drag the roller forward, the friction sensor 7 transmits the direction data of the friction force to the control unit 5. After the control unit 5 completes the data, analyzes and processes it, it can issue an action instruction to the motor in the direction of the friction force. The motor provides electric assistance for the maneuvering operation of the hose according to the instruction of the control unit 5. At the same time, the design of the groove of the hose support groove seat 1 can ensure that the roller is not prone to rollover when used with a fire hose to extinguish a fire. The power-assisted roller device can convert the sliding friction of the hose in the hose moving operation into rolling friction, and provide electric assistance according to the moving direction of the hose.The power-assisted roller and the water hose are two independent structures, which will not affect the storage of the water hose during combat readiness, nor will it affect the normal laying of the water hose during training and firefighting. The roller adopts electric power assistance. When dragging the water hose, the roller will sense the running direction and center of gravity changes of the water hose, and the roller will use the electronic control system to provide power assistance in the same direction of the water hose, greatly reducing the friction during the dragging of the water hose. The supporting platform of the roller and the water hose adopts a concave surface, so that the center of gravity is smaller, and the roller will not roll over when the water hose is dragged. , ensuring that the fire extinguishing process is continuous and effective; the overall volume of the roller is small, and it can be directly stored in the equipment box of the fire truck, which is convenient to use; the roller has a fireproof design and has high temperature resistance when extinguishing a fire; the roller adopts a universal wheel 4 design, and the roller can always match the moving direction of the water hose during the multi-directional water hose dragging process; the supporting platform of the roller that contacts the water hose is made of non-slip material, and the roller can effectively fit the water hose during the water hose dragging process, and the roller's electronic control system can effectively transmit the power to the water hose.

[0025] Embodiment 2: Figure 1-Figure 4 As shown, a Velcro bristle tape 8 is installed at the center position of one side of the top of the left horizontal bearing block 2, and a Velcro round surface tape 9 is installed at the center position of the other side of the top of the right horizontal bearing block 2. The horizontal bearing block 2 provides installation positions for the Velcro bristle tape 8 and the Velcro round surface tape 9. The Velcro bristle tape 8 can be bonded with the Velcro round surface tape 9, so as to integrally connect the fire hose on the hose support groove seat 1 and the power-assisted roller. When using the power-assisted roller, place the fire hose on the top of the hose support groove seat 1, pull the Velcro bristle tape 8, so that the bristle surface of the Velcro bristle tape 8 and the round surface of the Velcro round surface tape 9 are bonded, fix the hose, and prevent the hose and the roller from relative displacement.

[0026] Embodiment 3: The outer sides of the two groups of horizontal bearing blocks 2 are symmetrically provided with receiving grooves 10, and the tops of the horizontal bearing blocks 2 are symmetrically provided with sliding grooves 11, and the sliding grooves 11 are connected with the receiving grooves 10. A rotating shaft 12 is movably installed inside one side of the receiving groove 10, and a slider 13 is slidably installed outside the middle section of the rotating shaft 12, and a limit spring 14 is connected to one side of the slider 13, and the limit spring 14 is located outside the rotating shaft 12, and one end of the limit spring 14 is connected to the inner wall of one side of the receiving groove 10, and a protruding column 15 is symmetrically installed on one side of the slider 13, and a sliding column 18 is installed on the top of the slider 13, and the sliding column 18 is slidably connected with the sliding groove 11. A strip 16 is installed on the outer side of one end of the rotating shaft 12, and a slot 17 is provided on one side of the strip 16, and the slot 17 matches the protruding column 15. The first magnet block 19 is symmetrically installed on the outer side of the two groups of horizontal bearing blocks 2, and the first magnet block 19 is located in front of the receiving groove 10. A second magnet block 20 is installed on one side of the strip 16, and the second magnet block 20 and the first magnet block 19 are magnetically attracted to each other, and a push handle 21 is connected to one end of the strip 16. The horizontal bearing block 2 provides an opening position for the receiving groove 10 and the slide groove 11. The receiving groove 10 provides an installation position for the rotating shaft 12. The rotating shaft 12 provides an installation position for the slider 13. The slider 13 provides a connection position for the limit spring 14. The limit spring 14 connects the slider 13 to the inner wall of one side of the receiving groove 10. The cooperation between the limit spring 14 and the rotating shaft 12 limits the sliding track of the slider 13. The slider 13 provides an installation position for the protruding column 15 and the slide column 18. The slide column 18 facilitates the firefighters to slide the slider 13. The rotating shaft 12 provides an installation position for the strip 16. The strip 16 provides an installation position for the slot 17. The slot 17 and the protruding column 15 cooperate with each other to fix one end of the strip 16. The horizontal bearing block 2 provides an installation position for the first magnet block 19. The strip 16 provides an installation position for the second magnet block 20 and the push handle 21. The first magnet block 19 and the second magnet block 20 cooperate with each other to fix the other end of the strip 16. The push handle 21 facilitates the firefighters to push the power roller device. When using the power-assisted roller, the firefighter can slide the slide post 18 inward to drive the slider 13 to slide deep into the accommodating groove 10, so that the raised column 15 on the slider 13 withdraws from the slot 17, and slightly separates the first magnet block 19 and the second magnet block 20 to rotate the strip 16 around the rotating shaft 12 until the strip 16 rotates ninety degrees, releases the slide post 18, and the slider 13 is reset under the elastic restoring force of the limit spring 14, so that the raised column 15 is stuck in the slot 17 to fix the strip 16. At this time, the firefighter can push the power-assisted roller device through the push handle 21 at the top of the vertical strip 16; this makes it convenient for firefighters to move the power-assisted roller, and at the same time, the strip 16 can be fixed on both sides of the horizontal bearing block 2 when it is not needed, thereby reducing the occupied space.

[0027] Working principle: Before using the special intelligent power-assisted roller for mobile operation of airport fire-fighting hose, you should first check whether there are any problems that affect the use of the special intelligent power-assisted roller for mobile operation of airport fire-fighting hose. First, place the special intelligent power-assisted roller for mobile operation of airport fire-fighting hose at the position where it needs to be used. The power-assisted roller and the hose are two independent structures, which will not affect the storage of the hose during combat readiness, and will not affect the normal laying of the hose during training and fire fighting. The roller adopts electric power assistance. When dragging the hose, the roller will sense the running direction and center of gravity changes of the hose, and the roller will use the electronic control system to give the hose assistance in the same direction, which greatly reduces the friction during the dragging process of the hose. Friction; the supporting platform of the roller in contact with the water hose adopts a concave surface, so that the center of gravity is smaller, and the roller will not roll over when the water hose is being dragged, ensuring that the fire extinguishing process is continuous and effective; the overall volume of the roller is small, and it can be directly stored in the equipment box of the fire truck, which is convenient to use; the roller has a fireproof design and has high temperature resistance when extinguishing a fire; the roller adopts a universal wheel 4 design, and the roller can always match the moving direction of the water hose during the multi-directional water hose dragging process; the supporting platform of the roller in contact with the water hose is made of anti-slip material, and the roller can effectively fit the water hose during the water hose dragging process, and the roller's electronic control system can effectively transmit the power to the water hose. When using the power-assisted roller, the firefighter can slide the slide post 18 inward to drive the slider 13 to slide deep into the accommodating groove 10, so that the raised column 15 on the slider 13 withdraws from the slot 17, and slightly separates the first magnet block 19 and the second magnet block 20 to rotate the strip 16 around the rotating shaft 12 until the strip 16 rotates ninety degrees, releases the slide post 18, and the slider 13 is reset under the elastic restoring force of the limit spring 14, so that the raised column 15 is stuck in the slot 17 to fix the strip 16. At this time, the firefighter can push the power-assisted roller device through the push handle 21 at the top of the vertical strip 16; this makes it convenient for firefighters to move the power-assisted roller, and at the same time, the strip 16 can be fixed on both sides of the horizontal bearing block 2 when it is not needed, thereby reducing the occupied space.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. An intelligent power-assisted roller specially used for mobile operation of airport fire-fighting hoses, comprising a hose support groove seat (1), characterized in that: The groove diameter of the water hose support groove seat (1) is 80 mm. Horizontal bearing blocks (2) are installed on both sides of the water hose support groove seat (1). A steering wheel support rod (3) is symmetrically installed at the bottom of the horizontal bearing block (2). A universal wheel (4) is movably installed on the inner side of the bottom of the steering wheel support rod (3). A power assist component is arranged at the bottom of the horizontal bearing block (2), and the power assist component is used to provide electric power assist for the motorized operation of the water hose.

2. According to claim 1, the intelligent power-assisted roller for mobile operation of airport fire hose is characterized in that: The power assist assembly comprises a control unit (5), a battery box (6) and a motor. The control unit (5) is mounted on the top of the horizontal bearing block (2) on the left side. The battery box (6) is mounted on the bottom of the horizontal bearing block (2) on the right side, and a power battery is mounted inside the battery box (6). The motor is mounted in the middle of the universal wheel (4), and the motor is electrically connected to the battery box (6) and the control unit (5).

3. According to claim 1, the intelligent power-assisted roller for mobile operation of airport fire hose is characterized in that: A friction force sensor (7) is installed at the inner center of the hose support groove seat (1).

4. The intelligent power-assisted roller for mobile operation of airport fire hose according to claim 1 is characterized by: A Velcro bristle tape (8) is installed at the center position of one side of the top of the left horizontal bearing block (2), and a Velcro round tape (9) is installed at the center position of the other side of the top of the right horizontal bearing block (2).

5. According to claim 1, the intelligent power-assisted roller for mobile operation of airport fire hose is characterized in that: The outer sides of the two groups of horizontal bearing blocks (2) are symmetrically provided with receiving grooves (10), and the tops of the horizontal bearing blocks (2) are symmetrically provided with sliding grooves (11), and the sliding grooves (11) are connected with the receiving grooves (10).

6. The intelligent power-assisted roller for mobile operation of airport fire hose according to claim 5, characterized in that: A rotating shaft (12) is movably installed inside one side of the accommodating groove (10), a sliding block (13) is slidably installed on the outer side of the middle section of the rotating shaft (12), one side of the sliding block (13) is connected to a limit spring (14), and the limit spring (14) is located on the outer side of the rotating shaft (12), one end of the limit spring (14) is connected to the inner wall of one side of the accommodating groove (10), a protruding column (15) is symmetrically installed on one side of the sliding block (13), a sliding column (18) is installed on the top of the sliding block (13), and the sliding column (18) is slidably connected to the sliding groove (11).

7. The intelligent power-assisted roller for mobile operation of airport fire hose according to claim 6, characterized in that: A long strip (16) is installed on the outer side of one end of the rotating shaft (12), a slot (17) is opened on one side of the long strip (16), and the slot (17) matches the protruding column (15), first magnet blocks (19) are symmetrically installed on the outer sides of the two groups of horizontal bearing blocks (2), and the first magnet blocks (19) are located in front of the receiving groove (10), a second magnet block (20) is installed on one side of the long strip (16), and the second magnet block (20) is magnetically attracted to the first magnet block (19), and a push handle (21) is connected to one end of the long strip (16).

Citation Information

Patent Citations

  • Fire fighting hose with rolling wheels

    CN105782599A