Fire hose laying guide mechanism

Abstract

The application discloses a fire hose laying guide mechanism, which comprises a bracket, the bottom of the bracket is provided with two eight-shaped obliquely distributed rollers, the bracket is provided with an elastic lifting frame, the elastic lifting frame is provided with two horizontally arranged transmission wheels which are located below the bracket and abut against the outer periphery of each other, the outer edges of the two horizontally arranged transmission wheels are in contact with the outer edges of the two rollers when the height of the elastic lifting frame is lowered to the limit position, and the front side of the bracket is fixedly connected with a front supporting plate which is located in front of the two horizontally arranged transmission wheels through a connecting frame. In the application, the bracket, the two rollers, the two horizontally arranged transmission wheels which are arranged to move up and down, the rotating disc and the guide roller are arranged, so that the laying guide mechanism can lay the fire hose on the rugged road and quickly transport the fire hose on the rugged road, the labor intensity of the firemen is greatly reduced, and the safety of the firemen in the quick transportation of the fire hose is improved.

Description

Technical Field

[0001] This invention relates to the field of fire hose laying technology, and in particular to a fire hose laying guide mechanism. Background Technology

[0002] Fire hoses are flexible tubes used to transport high-pressure water or flame-retardant liquids such as foam. When not in use, fire hoses are in a coiled state. When in use, each fire hose needs to be laid out between the water source and the fire source and then connected to each other through joints. Currently, the common method of laying fire hoses is to carry them manually and connect them together. The longer the laying distance, the more people are involved in laying them and the more fire hoses need to be carried.

[0003] The above-mentioned laying environment is suitable for flat ground where it is easy to walk. For complex fire sites, the above-mentioned laying method has the following shortcomings: 1. In rugged mountainous areas, winding jungles and other laying environments, the route for laying fire hoses is rugged, and the manual laying of hoses is labor-intensive and time-consuming; 2. It is inconvenient for firefighters to carry fire hoses and run in rugged environments, and the safety is poor.

[0004] Therefore, the present invention provides a fire hose laying guide mechanism. Summary of the Invention

[0005] The purpose of this invention is to provide a fire hose laying guide mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A fire hose laying guide mechanism includes a bracket with two figure-eight inclined rollers at its bottom. A spring-loaded lifting frame is mounted on the bracket, and two horizontally abutting drive wheels located below the bracket are mounted on the spring-loaded lifting frame. When the spring-loaded lifting frame descends to its limit position, the outer edges of the two horizontal drive wheels contact the outer edges of the two rollers. A front support plate located in front of the two horizontal drive wheels is fixedly connected to the front side of the bracket via a connecting frame. A turntable for placing the fire hose is mounted on the front support plate. A rear support plate is mounted on the rear side of the bracket, with a grooved seat plate fixedly connected to its bottom. Two guide rollers are fixedly mounted on the grooved seat plate. A storage tray is fixedly mounted on the top of the rear support plate. A traction rod is fixedly connected to one side of the front support plate. A switching mechanism for controlling the lifting and lowering of the spring-loaded lifting frame is mounted on the bracket.

[0008] As a further description of the above technical solution:

[0009] A rubber ring is fixedly fitted around the outer periphery of the roller, and an arc-shaped resistance-increasing strip is fixedly provided on the outer peripheral wall of the rubber ring. The outer peripheral wall of the horizontal transmission wheel is provided with circumferentially evenly distributed extruded rubber strips.

[0010] As a further description of the above technical solution:

[0011] The extruded rubber strips on the two horizontal transmission wheels are interlocked. When the roller and the horizontal transmission wheel abut against each other, the extruded rubber strip and the arc-shaped resistance-increasing strip on the horizontal transmission wheel are interlocked.

[0012] As a further description of the above technical solution:

[0013] An air-filled cavity is provided inside the extruded rubber strip, and the extruded rubber strip is snapped together with the horizontal transmission wheel.

[0014] As a further description of the above technical solution:

[0015] The outer circumference of the horizontal transmission wheel is provided with a snap-fit ​​hole and a snap groove located at the opening of the snap-fit ​​hole. The extruded rubber strip is snap-fitted to the snap groove. A rubber tube that snaps into the snap-fit ​​hole is fixedly provided in the middle of one side of the extruded rubber strip.

[0016] As a further description of the above technical solution:

[0017] One end of the rubber tube is provided with an inflation nozzle, and the other end is connected to the inner cavity of the inflation chamber.

[0018] As a further description of the above technical solution:

[0019] The elastic lifting frame is provided with a guide column that passes through the bracket. The bottom of the guide column is rotatably connected to the horizontal transmission wheel. The elastic lifting frame is provided with a compression spring sleeved on the guide column. The compression spring is located between the horizontal transmission wheel and the bracket.

[0020] As a further description of the above technical solution:

[0021] The switching mechanism includes a drive shaft and a cam fixedly sleeved on the drive shaft. The drive shaft is rotatably connected to the top of the bracket. A baffle located above the cam is fixedly installed on the elastic lifting frame, and a limit groove is formed at the bottom of the baffle.

[0022] As a further description of the above technical solution:

[0023] One end of the drive shaft is fixedly connected to an arm.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0025] 1. In this invention, by setting rollers, horizontal transmission wheels, turntables and guide rollers, it is convenient to automatically release and lay fire hoses during the movement of this mechanism. In other words, firefighters do not need to come into contact with the fire waterway during the laying process. They only need to pull this device to move along the laying line to lay the fire hose. It is suitable for laying rugged laying lines and greatly reduces labor intensity.

[0026] 2. In this invention, by setting up figure-eight rollers, it is convenient for this guiding mechanism to move fire hoses on rugged ground, improves the stability of the mechanism's rapid movement, enhances the safety of firefighters in transferring fire hoses, and is suitable for long-distance transfer of fire hoses. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a fire hose laying guide mechanism proposed in this invention;

[0028] Figure 2 for Figure 1 A structural diagram viewed from below;

[0029] Figure 3 This is a schematic diagram of the elastic lifting frame of a fire hose laying guide mechanism proposed in this invention;

[0030] Figure 4 This is a schematic diagram of the switching mechanism of a fire hose laying guide mechanism proposed in this invention;

[0031] Figure 5 This is a schematic diagram of the structure of the horizontal transmission wheel of the fire hose laying guide mechanism proposed in this invention after explosion and unfolding.

[0032] Figure 6 This is a cross-sectional schematic diagram of the extruded rubber strip of a fire hose laying guide mechanism proposed in this invention.

[0033] Legend:

[0034] 1. Bracket; 2. Roller; 21. Rubber ring; 211. Arc-shaped resistance-increasing strip; 3. Elastic lifting frame; 31. Baffle; 311. Limiting groove; 32. Guide column; 33. Compression spring; 4. Horizontal transmission wheel; 41. Extruded rubber strip; 411. Inflation chamber; 412. Rubber tube; 4121. Inflation nozzle; 42. Snap-fit ​​hole; 43. Buckle groove; 5. Connecting frame; 6. Front support plate; 7. Turntable; 8. Rear support plate; 9. Groove seat plate; 101. Guide roller; 102. Traction rod; 103. Switching mechanism; 1031. Drive shaft; 10311. Arm; 1032. Cam; 104. Storage tray. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] Please see Figure 1-4 A fire hose laying guide mechanism includes a bracket 1, which is trapezoidal in shape. Two rollers 2 are arranged at the bottom of the bracket 1 with an inverted V-shape. The rollers 2 are rotatably connected to two inclined plates on the bracket 1. When the guide mechanism is in use, the rollers 2 are in contact with the ground. Specifically, a support column is welded to the bottom of the inclined plate on the bracket 1 and rotatably connected to the middle of the roller 2. The inclination angle of the roller 2 is within the range of 35-45 degrees relative to the horizontal.

[0038] A spring-loaded lifting frame 3 is installed on the bracket 1. The spring-loaded lifting frame 3 has two horizontal transmission wheels 4 located below the bracket 1 with their outer peripheries abutting each other. Specifically, the spring-loaded lifting frame 3 has a guide post 32 that passes through the bracket 1. The bottom of the guide post 32 is rotatably connected to the horizontal transmission wheels 4. The spring-loaded lifting frame 3 has a compression spring 33 sleeved on the guide post 32. The compression spring 33 is located between the horizontal transmission wheels 4 and the bracket 1. The function of the compression spring 33 is to apply a downward thrust to the horizontal transmission wheels 4. The position where the two horizontal transmission wheels 4 abut each other is the position where the fire hose passes. That is to say, the two horizontal transmission wheels 4 are in the state of clamping the fire hose.

[0039] When the elastic lifting frame 3 descends to its limit position, the outer edges of the two horizontal transmission wheels 4 contact the outer edges of the two rollers 2 respectively. When the rollers 2 rotate, they drive the horizontal transmission wheels 4 to rotate using friction. Preferably, a rubber ring 21 is fixedly sleeved on the outer periphery of the rollers 2. An arc-shaped friction-increasing strip 211 is fixedly provided on the outer periphery of the rubber ring 21. The outer periphery of the horizontal transmission wheel 4 is provided with circumferentially evenly distributed extruded rubber strips 41, thereby increasing the frictional force between the rollers 2 and the horizontal transmission wheels 4.

[0040] The front side of the bracket 1 is fixedly connected to a front support plate 6 located in front of two horizontal transmission wheels 4 via a connecting frame 5. A turntable 7 for placing fire hoses is provided on the front support plate 6. A limiting shaft is fixedly provided in the middle of the turntable 7. After the rolled fire hose is placed on the turntable 7, the limiting shaft passes through the middle of the fire hose roll. The rear side of the bracket 1 is provided with a rear support plate 8. A grooved seat plate 9 is fixedly connected to the bottom of the rear support plate 8. The grooved seat plate 9 supports the body of the fire hose. Two guide rollers 101 are fixedly provided on the grooved seat plate 9. The guide rollers 101 have the function of guiding the fire hose. The body of the fire hose, squeezed by the two horizontal transmission wheels 4, extends out from the two guide rollers 101.

[0041] A storage tray 104 is fixedly installed on the top of the rear support plate 8. This storage tray 104 is trough-shaped and is used to store multiple rolls of other fire hoses. A traction rod 102 is fixedly connected to one side of the front support plate 6. This traction rod 102 is the handhold for firefighters. Firefighters can quickly pull the support plate 1 by holding the traction rod 102.

[0042] A switching mechanism 103 for controlling the lifting of the elastic lifting frame 3 is provided on the bracket 1. Specifically, the switching mechanism 103 includes a drive shaft 1031 and a cam 1032 fixedly sleeved on the drive shaft 1031. The drive shaft 1031 is rotatably connected to the top of the bracket 1. A baffle 31 located above the cam 1032 is fixedly provided on the elastic lifting frame 3. The rotation of the drive shaft 1031 drives the cam 1032 to rotate, thereby pushing the baffle 31 to rise, thereby controlling the horizontal drive wheel 4 to disengage from the roller. A limiting groove 311 is provided at the bottom of the baffle 31. The limiting groove 311 has the function of improving the stability of the cam 1032 when it stops. One end of the drive shaft 1031 is fixedly connected to an arm 10311, which is a manually operated component.

[0043] Example 2

[0044] Please see Figure 2 The difference from Example 1 is that the extrusion rubber strips 41 on the two horizontal transmission wheels 4 are interlocked. The high-pressure setting can increase the friction between the extrusion rubber strips 41 and the fire hose, and improve the reliability of the horizontal transmission wheel 4 in transporting the fire hose. When the roller 2 and the horizontal transmission wheel 4 abut against each other, the extrusion rubber strips 41 and the arc-shaped resistance-increasing strips 211 on the horizontal transmission wheel 4 are interlocked, which improves the reliability of the roller 2 driving the horizontal transmission wheel 4 to rotate.

[0045] Example 3

[0046] Please see Figure 5 and Figure 6The difference between Embodiment 1 and Embodiment 2 is that an air-filled cavity 411 is provided inside the extrusion rubber strip 41. This configuration can greatly increase the extrusion force of the extrusion rubber strip 41 on the fire hose and greatly reduce the frequency of slippage of the fire hose when it is transmitted by the extrusion rubber strip 41. Moreover, if a single extrusion rubber strip 41 leaks air, it will not affect the extrusion force of other extrusion rubber strips 41 on the fire hose. The extrusion rubber strip 41 is snap-connected to the horizontal transmission wheel 4, and can be replaced individually when the extrusion rubber strip 41 leaks air.

[0047] Specifically, the outer periphery of the horizontal transmission wheel 4 is provided with a snap-fit ​​hole 42 and a snap groove 43 located at the opening of the snap-fit ​​hole 42. The extruded rubber strip 41 is snapped into the snap groove 43. A rubber tube 412 that snaps into the snap-fit ​​hole 42 is fixedly provided in the middle of one side of the extruded rubber strip 41. The outer periphery of the rubber tube 412 is corrugated. One end of the rubber tube 412 is provided with an air nozzle 4121 and the other end is connected to the inner cavity of the air chamber 411. The air nozzle 4121 is used to squeeze the cavity of the rubber strip 41 to replenish the gas.

[0048] Working principle: When in use, one of the fire hose rolls is placed on the turntable 7, and then one end of the fire hose roll passes under the bracket 1 and through the abutting point of the two horizontal drive wheels 4, and then through the two guide rollers 101. Then, the other multiple fire hose rolls are placed in the storage tray 104.

[0049] 1. When no laying is required, and only the fire hose needs to be moved:

[0050] Firefighters manually rotate the drive shaft 1031 via the boom 10311, causing the cam 1032 to rotate and push the baffle 31 upward, raising the elastic lifting frame 3, compressing the spring 33, and disengaging the horizontal drive wheel 4 from the roller 2.

[0051] Then, move the hand-held tow bar 102. At this time, the roller 2 contacts the ground and rolls, realizing the remote transfer of the fire hose.

[0052] 2. When encountering a rugged and uneven paving route, and when paving is required:

[0053] Firefighters manually reset the cam 1032 via the boom 10311, causing the compression spring 33 to extend and push the horizontal transmission wheel 4 and roller 2 into contact.

[0054] Then, move the hand-held traction rod 102. The rotation of the roller 2 will drive the two horizontal transmission wheels 4 to rotate. When the two horizontal transmission wheels 4 rotate, the fire hose is released backward by the interlocking compression rubber strip 41. The fire hose roll on the turntable 7 is passively rotated and released, realizing the function of automatically releasing and laying the fire hose.

[0055] Because the two rollers 2 are in a V-shape, the guide device will not tip over when making sharp turns. Moreover, the inclined rollers 2 have less resistance when rolling on uneven ground, which greatly improves the efficiency of laying fire hoses on uneven ground.

[0056] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A fire hose laying guide mechanism, characterized in that, The system includes a bracket (1), with two rollers (2) arranged in a V-shape at the bottom. A spring-loaded lifting frame (3) is mounted on the bracket (1), and two horizontally abutting drive wheels (4) located below the bracket (1) are mounted on the spring-loaded lifting frame (3). When the spring-loaded lifting frame (3) descends to its maximum height, the outer edges of the two horizontally abutting drive wheels (4) contact the outer edges of the two rollers (2). A connecting frame (5) is fixedly connected to the front side of the bracket (1) to a component located in front of the two horizontally abutting drive wheels (4). A front support plate (6) is provided with a turntable (7) for placing fire hoses. A rear support plate (8) is provided on the rear side of the bracket (1). A grooved seat plate (9) is fixedly connected to the bottom of the rear support plate (8). Two guide rollers (101) are fixedly provided on the grooved seat plate (9). A storage tray (104) is fixedly provided on the top of the rear support plate (8). A traction rod (102) is fixedly connected to one side of the front support plate (6). A switching mechanism (103) for controlling the lifting of the elastic lifting frame (3) is provided on the bracket (1).

2. The fire hose laying guide mechanism according to claim 1, characterized in that, The roller (2) is fixedly fitted with a rubber ring (21) on its outer periphery. The outer periphery of the rubber ring (21) is fixedly provided with an arc-shaped resistance-increasing strip (211). The outer periphery of the horizontal transmission wheel (4) is provided with circumferentially evenly distributed extruded rubber strips (41).

3. The fire hose laying guide mechanism according to claim 2, characterized in that, The extruded rubber strips (41) on the two horizontal transmission wheels (4) are interlocked. When the roller (2) and the horizontal transmission wheel (4) abut against each other, the extruded rubber strips (41) and the arc-shaped resistance-increasing strips (211) on the horizontal transmission wheel (4) are interlocked.

4. The fire hose laying guide mechanism according to claim 3, characterized in that, An air chamber (411) is provided inside the extruded rubber strip (41), and the extruded rubber strip (41) is snapped together with the horizontal transmission wheel (4).

5. A fire hose laying guide mechanism according to claim 4, characterized in that, The outer periphery of the horizontal transmission wheel (4) is provided with a snap-fit ​​hole (42) and a snap groove (43) located at the opening of the snap-fit ​​hole (42). The extruded rubber strip (41) and the snap groove (43) are snap-fit ​​connected. A rubber tube (412) that snaps into the snap-fit ​​hole (42) is fixedly provided in the middle of one side of the extruded rubber strip (41).

6. A fire hose laying guide mechanism according to claim 5, characterized in that, One end of the rubber tube (412) is provided with an air inlet (4121), and the other end is connected to the inner cavity of the air inlet (411).

7. A fire hose laying guide mechanism according to claim 1, characterized in that, The elastic lifting frame (3) is provided with a guide post (32) that passes through the bracket (1). The bottom of the guide post (32) is rotatably connected to the horizontal transmission wheel (4). The elastic lifting frame (3) is provided with a compression spring (33) sleeved on the guide post (32). The compression spring (33) is located between the horizontal transmission wheel (4) and the bracket (1).

8. A fire hose laying guide mechanism according to claim 7, characterized in that, The switching mechanism (103) includes a drive shaft (1031) and a cam (1032) fixedly sleeved on the drive shaft (1031). The drive shaft (1031) is rotatably connected to the top of the bracket (1). A baffle (31) located above the cam (1032) is fixedly installed on the elastic lifting frame (3). A limiting groove (311) is opened at the bottom of the baffle (31).

9. A fire hose laying guide mechanism according to claim 8, characterized in that, One end of the drive shaft (1031) is fixedly connected to the arm (10311).

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