Anti-folding and anti-blocking device for chain-type fire-fighting belt of fire-fighting truck

Abstract

The utility model discloses a fire fighting truck chain type fire-fighting belt anti-folding and anti-blocking device, which relates to the technical field of fire-fighting belt accessories, and comprises a first chain plate and a second chain plate, the top of the first chain plate and the bottom of the second chain plate are respectively provided with a guide groove, and the bottom of the first chain plate and the top of the second chain plate are respectively and fixedly provided with a positioning rod. The middle of the bottom of the first chain plate is connected with a first supporting block, and the middle of the bottom of the second chain plate is connected with a second supporting block. Through the arrangement of the guide groove, the positioning rod, the first supporting block and the second supporting block, when a fire hose is communicated with the first chain plate and the second chain plate to rotate together, the positioning rod slides in the guide groove, and the included angle between the two ends of the guide groove is 50 degrees, so that the maximum rotation angle of the first chain plate and the second chain plate is plus or minus 25 degrees; and flexible use is facilitated, manual adjustment and limiting are not needed, operation is facilitated, and two-stage anti-folding protection can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire belt accessories, in particular to a chain-type fire belt anti-bending and blocking device for a fire truck. Background Art

[0002] A fire hose is a pipe that connects fire-fighting equipment and is used to transport water. For example, when a fire occurs, the fire hose is connected to a fire truck or a fire hydrant. Water can then be supplied to the sprinklers through the fire hydrant or fire truck, and the sprinklers spray water at or around the fire point, thereby extinguishing the flames by reducing the temperature of the combustibles and the contact between the combustibles and the air. Since the fire hose is a flexible pipe, it is easy to cause blockage when the bending angle is too large. Therefore, a chain anti-bending device is used to prevent the fire hose from bending at too large an angle.

[0003] A chain-type fire belt anti-bending and blocking device with application number 201620849467.8 comprises several fixed blocks, which are connected end to end to form a chain structure, and two adjacent fixed blocks are connected by positioning members, which are used to adjust and fix the angles of the two connected fixed blocks, and a locking member is provided on the side of the fixed block for fixing the fire belt; the positioning member comprises a pin connecting the two adjacent fixed blocks, a disc-shaped angle adjustment disk fixedly connected to the pin at one end of the pin, and the other end of the pin is connected to the fixed block by a spring; slots are evenly distributed on the edge of the angle adjustment disk, and protrusions adapted to the slots are provided at both ends of the surface of the fixed block in contact with the angle adjustment disk; the chain fire belt anti-bending and blocking device adopting the above structure has the advantage of realizing a non-bending arc turning when the fire belt encounters an obstacle during use, avoiding the phenomenon of small water volume or no water caused by the fire belt being bent and blocked during fire extinguishing, and has the advantages of small space occupation, easy portability and quick installation.

[0004] During use, this technical solution needs to first end the limiting of the angle adjustment disk, then rotate the fixed block to adjust the turning angle of the fire belt, and then limit the angle adjustment disk after the adjustment is completed. However, during the fire extinguishing operation, due to deflagration, flame extinguishing and other reasons, firefighters need to keep moving to avoid flames, explosions or rush to other fire points. Therefore, the fire belt will frequently be in an active state and is not always fixed in a certain position. The technical solution requires a limiting operation, which causes firefighters to limit and release the limit operation when walking back and forth, otherwise it is still easy to cause the pipe to bend and become blocked. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide a chain-type fire belt anti-bending and blocking device for a fire truck to solve the technical problems mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fire truck chain-type fire belt anti-bending and blocking device, comprising a first chain plate and a second chain plate, guide grooves are provided at the top of the first chain plate and the bottom of the second chain plate, positioning rods are fixed at the bottom of the first chain plate and the top of the second chain plate, a first support block is connected in the middle of the bottom of the first chain plate, and a second support block is connected in the middle of the bottom of the second chain plate.

[0007] By adopting the above technical solution, when the fire belt connects the first chain plate and the second chain plate and rotates together, the positioning rod slides in the guide groove, and the angle between the two ends of the guide groove is fifty degrees. Therefore, the maximum rotation angle of the first chain plate and the second chain plate is plus or minus twenty-five degrees. Then the positioning rod will be against the two ends of the guide groove, thereby preventing the first chain plate and the second chain plate from continuing to rotate, causing the fire belt to bend too much and become blocked. It has strong flexibility and does not require additional manual adjustment and limit control, and is convenient to use; and if the force applied is too large and causes the positioning rod to break, the edge of the first support block collides with the edge of the second support block, and the limit is performed again to prevent the rotation angle between the first chain plate and the second chain plate from being greater than thirty degrees, and the presence of the first support block and the second support block can play an auxiliary supporting role, thereby increasing the structural strength of the combination of the first chain plate and the second chain plate.

[0008] Furthermore, the guide groove is arc-shaped, and the angle between the two ends of the guide groove is fifty degrees.

[0009] By adopting the above technical solution, the angle between the two ends of the guide groove is fifty degrees, so the maximum rotation angle of the first chain plate and the second chain plate is plus or minus twenty-five degrees.

[0010] Furthermore, the positioning rod is slidably connected to the guide groove.

[0011] By adopting the above technical solution, when the fire belt is connected to the first chain plate and the second chain plate and rotates together, the positioning rod slides in the guide groove, and then the positioning rod will abut against the two ends of the guide groove, thereby preventing the first chain plate and the second chain plate from continuing to rotate, causing the fire belt to bend too much and cause blockage.

[0012] Furthermore, the first support block abuts against the second support block.

[0013] By adopting the above technical solution, if the positioning rod breaks due to excessive force, as the first chain plate and the second chain plate continue to rotate, the edge of the first support block collides with the edge of the second support block, and the position is limited again to prevent the rotation angle between the first chain plate and the second chain plate from being greater than thirty degrees.

[0014] Furthermore, an axle pin is connected inside the first chain plate, and a shaft sleeve is connected inside the second chain plate, and the axle pin and the shaft sleeve are rotatably connected.

[0015] By adopting the above technical solution, the first chain plate rotates with the second chain plate through the shaft pin and the shaft sleeve, so that the chain can rotate and bend along with the fire belt.

[0016] Furthermore, the first chain plate, the second chain plate, the bushing, the axle pin, the first support block, the second support block, the guide groove and the positioning rod are each provided in two groups, and the two groups of the first chain plate, the second chain plate, the bushing, the axle pin, the first support block, the second support block, the guide groove and the positioning rod are all mirror-imaged.

[0017] By adopting the above technical solution and providing two sets of chains, the force applied to the structure can be shared by the two sets of chains, thereby increasing the strength and service life of the structure.

[0018] Furthermore, one group of the first support blocks are connected to first hoop plates on both sides, and a pin is passed through the outer surface of the first hoop plate, and a spring is sleeved on the outside of the pin. Another group of the first support blocks are connected to second hoop plates on both sides, and a rod is fixed on the top of the second hoop plate.

[0019] By adopting the above technical solution, firefighters put the first hoop plate and the second hoop plate on the fire belt, and move the first hoop plate and the second hoop plate close to each other vertically, so that the rod passes through the first hoop plate. The rod will push open the pin while passing through the first hoop plate, so that the pin is retracted into the inner wall of the first hoop plate and compresses the spring. After the rod passes through the first hoop plate, the spring loses pressure and affects the reset of the driving pin, so that the pin enters the inside of the rod, thereby preventing the first hoop plate from separating from the second hoop plate, thereby completing the connection between the chain anti-breaking device and the fire belt.

[0020] Furthermore, the first hoop plate and the second hoop plate are both arc-shaped, and the first hoop plate and the second hoop plate are detachably connected.

[0021] By adopting the above technical solution, the first hoop plate and the second hoop plate are put on the fire belt, and the first hoop plate and the second hoop plate are vertically close to each other, so that the insertion rod passes through the first hoop plate.

[0022] Furthermore, the insertion rod and the latch pin are both slidably connected to the first hoop plate, and the insertion rod and the latch pin abut against each other.

[0023] By adopting the above technical solution, the spring loses pressure to drive the latch to reset, so that the latch enters the interior of the insertion rod, thereby preventing the first hoop plate from separating from the second hoop plate.

[0024] In summary, the present invention has the following beneficial effects:

[0025] The utility model is provided with a guide groove, a positioning rod, a first support block and a second support block, so that when the fire belt is connected to the first chain plate and the second chain plate rotates together, the positioning rod slides in the guide groove, and the angle between the two ends of the guide groove is fifty degrees. Therefore, the maximum rotation angle of the first chain plate and the second chain plate is plus or minus twenty-five degrees. Then the positioning rod will be against the two ends of the guide groove, thereby preventing the first chain plate and the second chain plate from continuing to rotate, resulting in a blockage caused by excessive bending angle of the fire belt. The utility model has strong flexibility and does not require additional manual adjustment and limit control, which is convenient to use; and if the force applied is too large and causes the positioning rod to break, the edge of the first support block collides with the edge of the second support block, and is limited again to prevent the rotation angle between the first chain plate and the second chain plate from being greater than thirty degrees, and the presence of the first support block and the second support block can play an auxiliary supporting role, thereby increasing the structural strength of the combination of the first chain plate and the second chain plate; it is convenient to use flexibly, does not require manual adjustment and limit for easy operation, and can provide two-stage anti-bending protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the utility model;

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0028] Figure 3 For the utility model Figure 2 A magnified view of the structure at point A;

[0029] Figure 4 This is a schematic diagram of the explosion structure of the first chain plate of the utility model.

[0030] In the figure: 1. first chain plate; 2. second chain plate; 3. shaft sleeve; 4. shaft pin; 5. first support block; 6. second support block; 7. guide groove; 8. positioning rod; 9. first hoop plate; 10. second hoop plate; 11. insertion rod; 12. latch pin; 13. spring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] The following describes an embodiment of the present invention based on its overall structure.

[0033] Example 1:

[0034] A fire truck chain fire belt anti-bending device, such as Figure 1 、 Figure 2 and Figure 4As shown, it includes a first chain plate 1 and a second chain plate 2. A guide groove 7 is provided at the top of the first chain plate 1 and the bottom of the second chain plate 2. The guide groove 7 is arc-shaped, and the angle between the two ends of the guide groove 7 is fifty degrees, so that the maximum rotation angle of the first chain plate 1 and the second chain plate 2 is plus or minus twenty-five degrees; a positioning rod 8 is fixed at the bottom of the first chain plate 1 and the top of the second chain plate 2. The positioning rod 8 is slidably connected to the guide groove 7, and the positioning rod 8 will be against the two ends of the guide groove 7, thereby preventing the first chain plate 1 and the second chain plate 2 from continuing to rotate and causing the fire belt to bend. Blockage occurs if the angle is too large; a first support block 5 is connected to the middle of the bottom of the first chain plate 1, and a second support block 6 is connected to the middle of the bottom of the second chain plate 2. The first support block 5 abuts against the second support block 6, and the edge of the first support block 5 collides with the edge of the second support block 6, and is limited again to avoid the rotation angle between the first chain plate 1 and the second chain plate 2 being greater than thirty degrees. The presence of the first support block 5 and the second support block 6 can play an auxiliary supporting role, thereby increasing the structural strength of the combination of the first chain plate 1 and the second chain plate 2.

[0035] See Figure 1 and Figure 2 In the above embodiment, the first chain plate 1 is internally connected with an axle pin 4, and the second chain plate 2 is internally connected with a shaft sleeve 3. The axle pin 4 is rotatably connected to the shaft sleeve 3 to facilitate the rotation of the chain; the first chain plate 1, the second chain plate 2, the shaft sleeve 3, the axle pin 4, the first support block 5, the second support block 6, the guide groove 7 and the positioning rod 8 are each provided in two groups, and the two groups of the first chain plate 1, the second chain plate 2, the shaft sleeve 3, the axle pin 4, the first support block 5, the second support block 6, the guide groove 7 and the positioning rod 8 are all mirror-imaged. By setting up two groups of chains, the force exerted on the structure can be shared by the two groups of chains, thereby increasing the structural strength and service life.

[0036] Example 2:

[0037] On the basis of the above-mentioned embodiment 1, in order to facilitate the connection of the anti-breaking and blocking device with the fire hose, the following settings are now adopted.

[0038] See Figure 2 and Figure 3When the first hoop plate 9 is pushed through, the spring 13 is pressed against the outside of the first hoop plate 9 and the spring 13 is pressed against the outside of the second hoop plate 10.

[0039] The implementation principle of the present utility model is as follows: first, the firefighter puts the first hoop plate 9 and the second hoop plate 10 on the fire hose, and brings the first hoop plate 9 and the second hoop plate 10 close to each other vertically, so that the rod 11 passes through the first hoop plate 9. The rod 11 pushes open the latch 12 while passing through the first hoop plate 9, so that the latch 12 retracts into the inner wall of the first hoop plate 9 and compresses the spring 13. When the rod 11 passes through the first hoop plate 9, the spring 13 loses pressure and drives the latch 12 to reset, so that the latch 12 enters the interior of the rod 11, thereby preventing the first hoop plate 9 from separating from the second hoop plate 10, thereby completing the connection between the chain anti-breaking and blocking device and the fire hose;

[0040] When the first and second chain plates 1 and 2 are connected, the first and second chain plates 2 are in a state of being blocked by the first and second chain plates 1 and 2, respectively.

[0041] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A fire truck chain fire belt anti-bending and blocking device, comprising a first chain plate (1) and a second chain plate (2), characterized in that: A guide groove (7) is provided at the top of the first chain plate (1) and the bottom of the second chain plate (2); a positioning rod (8) is fixed at the bottom of the first chain plate (1) and the top of the second chain plate (2); a first support block (5) is connected in the middle of the bottom of the first chain plate (1), and a second support block (6) is connected in the middle of the bottom of the second chain plate (2).

2. The fire truck chain fire belt anti-bending and blocking device according to claim 1, characterized in that: The guide groove (7) is in an arc shape, and the angle between the two ends of the guide groove (7) is fifty degrees.

3. The fire truck chain fire belt anti-bending and blocking device according to claim 2, characterized in that: The positioning rod (8) is slidably connected to the guide groove (7).

4. The fire truck chain fire belt anti-bending and blocking device according to claim 1, characterized in that: The first support block (5) abuts against the second support block (6).

5. The fire truck chain fire belt anti-bending and blocking device according to claim 1, characterized in that: The first chain plate (1) is internally connected to an axle pin (4), the second chain plate (2) is internally connected to a shaft sleeve (3), and the axle pin (4) is rotatably connected to the shaft sleeve (3).

6. The fire truck chain fire belt anti-bending and blocking device according to claim 5, characterized in that: The first chain plate (1), the second chain plate (2), the shaft sleeve (3), the shaft pin (4), the first support block (5), the second support block (6), the guide groove (7) and the positioning rod (8) are each provided in two groups, and the two groups of the first chain plate (1), the second chain plate (2), the shaft sleeve (3), the shaft pin (4), the first support block (5), the second support block (6), the guide groove (7) and the positioning rod (8) are both arranged in a mirror image.

7. The fire truck chain fire belt anti-bend and anti-blocking device according to claim 6, characterized in that: Both sides of one group of the first support blocks (5) are connected to first hoop plates (9), and a latch (12) is passed through the outer surface of the first hoop plates (9), and a spring (13) is sleeved on the outside of the latch (12); both sides of another group of the first support blocks (5) are connected to second hoop plates (10), and a plug rod (11) is fixed on the top of the second hoop plates (10).

8. The fire truck chain fire belt anti-bend and anti-blocking device according to claim 7, characterized in that: The first hoop plate (9) and the second hoop plate (10) are both arc-shaped, and the first hoop plate (9) and the second hoop plate (10) are detachably connected.

9. The fire truck chain fire belt anti-bend and anti-blocking device according to claim 7, characterized in that: The inserting rod (11) and the latch pin (12) are both slidably connected to the first hoop plate (9), and the inserting rod (11) and the latch pin (12) abut against each other.

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