Rotary fire-fighting water crane

Abstract

The utility model relates to the technical field of fire fighting, in particular to a rotary fire-fighting water crane which comprises an overground conveying pipe and a water receiving pipeline which is communicated and fixedly connected with the bottom end of the overground conveying pipe, a water escape valve is arranged in the middle section of the water receiving pipeline, and an extension rod which extends upwards to the ground surface is arranged on a rotating shaft of the water escape valve. The overground conveying pipe comprises a water inlet pipe communicated and fixedly connected with the end of the water receiving pipeline and a water outlet pipe arranged at the end of the water inlet pipe, a rotating pipe is arranged between the end of the water outlet pipe and the end of the water inlet pipe, a driven fluted disc is arranged on the outer wall of the rotating pipe, and a rotating device is arranged on the outer wall of the water inlet pipe. The top end of the rotating device is sleeved with a driving gear meshed with the driven fluted disc, the rotating device is rotated to drive the driving gear to rotate, and rotating force is output to the rotating pipe through the driven fluted disc so that the angle of the water outlet pipe can be changed.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting, in particular to a rotary fire fighting water crane. Background Art

[0002] A fire water crane refers to a pipeline device used in firefighting to connect firefighting equipment and instruments and to transport water for firefighting. The fire water crane is directly connected to the fire water source. When in use, fire water can be quickly transmitted from the pipeline through the fire water crane and injected into the fire water tank of the fire truck from the top through a curved pipe. Compared with the traditional method of connecting the fire water tank through a fire hydrant and a fire hose, adding fire water through a fire water crane can reduce the impact of water pressure when the water level in the water tank is high, making the addition of fire water faster. At the same time, in order to cope with the harsh environment when a fire occurs, the fire water crane has good pressure resistance, corrosion resistance, and high temperature resistance.

[0003] Although the above-mentioned existing technology can solve the corresponding technical problems, it still has certain defects: the existing fire water crane is fixed and locked through multiple split fire pipe fittings, so its extension angle and transmission angle are fixed. When the fire truck is adding water, it is often necessary to move to a designated position to align the fire water crane with the water filling port of its water tank. When the end alignment position of the fire water crane needs to be adjusted, it cannot be adjusted directly, and the alignment position needs to be adjusted through a hose or additional connection of split pipe fittings. The adjustment steps are cumbersome and time-consuming, which makes the adaptability of the fire water crane poor. Utility Model Content

[0004] The purpose of the utility model is to provide a rotary fire-fighting water crane with simple adjustment of the water outlet angle and strong adaptability in view of the defects and shortcomings of the existing technology.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: a rotary fire-fighting water crane, comprising a ground delivery pipe and a water receiving pipe interconnected and fixedly connected to the bottom end of the ground delivery pipe, a drain valve is provided in the middle section of the water receiving pipe, and an extension rod extending upward to the ground surface is provided on the rotating shaft of the drain valve, the ground delivery pipe comprises a water inlet pipe interconnected and fixedly connected to the end of the water receiving pipe and a water outlet pipe arranged at the end of the water inlet pipe, a rotating pipe is provided between the end of the outlet pipe and the end of the water inlet pipe, a driven gear is provided on the outer wall of the rotating pipe, a rotating device is provided on the outer wall of the water inlet pipe, a driving gear meshed with the driven gear is provided on the top of the rotating device, the rotating device is rotated to drive the driving gear to rotate, and the rotational force is output to the rotating pipe through the driven gear to change the angle of the water outlet pipe.

[0006] A further improvement is that a main valve is provided on the middle section of the water receiving pipe close to the input end.

[0007] Further improvement is that the outer wall of the extension rod is sleeved with a protective sleeve.

[0008] Further improvement is that a twist handle is detachably arranged at the top end of the extension rod.

[0009] Further improvement is that a switch valve is arranged between the end of the water inlet pipe and the rotating pipe.

[0010] Further improvement is that a connector is arranged between the switch valve and the end of the water inlet pipe.

[0011] Further improvement is that the rotating device comprises a connecting shell fixedly arranged on the outer wall of the water inlet pipe and a driving shaft movably clamped and penetratingly arranged on the side wall of the connecting shell, a driven shaft is penetratingly arranged on the connecting shell, a driving gear is sleeved on the top end of the driven shaft, and the driving shaft and the driven shaft are connected through a gear set.

[0012] Further improvement is that the gear set comprises a first helical gear sleeved on the end of the driving shaft and a second helical gear sleeved on the outer wall of the driven shaft, and the first helical gear and the second helical gear are meshingly connected.

[0013] Further improvement is that a second twist handle is arranged on the other end of the driving shaft.

[0014] Further improvement is that the outer wall of the rotating pipe is provided with a support frame movably clamped on the middle section of the driven shaft.

[0015] Further improvement is that the rotating pipe comprises a fixed pipe and a twist pipe movably clamped on the top end of the fixed pipe, and the outer wall of the twist pipe is provided with a driven gear disc.

[0016] Further improvement is that the bottom of the twist pipe is provided with an anti-falling block abutting against the inner wall of the fixed pipe, and the inner wall of the fixed pipe is provided with a protrusion for limiting the anti-falling block.

[0017] Further improvement is that a plurality of sealing rings are arranged between the inner wall of the fixed pipe and the outer wall of the bottom of the twist pipe.

[0018] After the above technical scheme is adopted, the utility model has the beneficial effects that:

[0019] When it is necessary to change the water outlet angle of the water outlet pipe, only the rotating device needs to be quickly twisted, the driving gear can be driven to rotate through the rotating device, the driven gear disc can be synchronously rotated through gear meshing, the twist pipe of the rotating pipe can be rotated in the fixed pipe, and the water outlet pipe connected with the twist pipe can be rotated, at this time, the water outlet pipe can be synchronously rotated with the twist pipe, the water outlet angle can be changed, the adjustment is simple, the water outlet angle is variable, and the adaptability is high.

[0020] The utility model discloses a water outlet valve is arranged on the pipeline, and when the water is transported, the water outlet valve is closed, and when the water is not transported, the water outlet valve is opened, thereby avoiding the phenomenon that the pipeline is frozen and broken by the water in the pipeline, and the service life is longer and the adaptability is stronger. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0022] Figure 1 It is the structure schematic diagram of the front view of the fire-fighting water crane of the utility model;

[0023] Figure 2 It is the structure schematic diagram of the front view of the ground conveying pipe of the utility model;

[0024] Figure 3 It is the structure schematic diagram of the front view section of the rotating device of the utility model;

[0025] Figure 4 It is the structure schematic diagram of the front view section of the rotating pipe of the utility model. DETAILED DESCRIPTION

[0026] The utility model will be further explained in connection with the drawings and specific embodiment.

[0027] Referring to Figures 1-4The technical scheme adopted by the embodiment is shown as follows: a rotary fire-fighting water crane comprises an above-ground conveying pipe and a water receiving pipe 10 connected with the bottom end of the above-ground conveying pipe and fixedly connected with each other, a drain valve 12 is arranged in the middle section of the water receiving pipe 10, an extension rod 13 extending upwards to the ground is arranged on the rotating shaft of the drain valve 12, the above-ground conveying pipe comprises a water inlet pipe 1 connected with the end of the water receiving pipe 10 and fixedly connected with each other and a water outlet pipe 6 arranged at the end of the water inlet pipe 1, a rotating pipe 5 is arranged between the end of the water outlet pipe 6 and the end of the water inlet pipe 1, the rotating pipe 5 comprises a fixed pipe 52 and a twisting pipe 51 movably clamped at the top end of the fixed pipe 52, a driven gear disc 7 is arranged on the outer wall of the twisting pipe 51, the outer wall of the rotating pipe 5 is provided with the driven gear disc 7, a rotating device 9 is arranged on the outer wall of the water inlet pipe 1, the rotating device 9 comprises a connecting shell 21 fixedly arranged on the outer wall of the water inlet pipe 1 and a driving shaft 23 movably clamped and penetratingly arranged on the side wall of the connecting shell 21, a driven shaft 22 penetratingly arranged on the connecting shell 21 is further arranged on the connecting shell 21, a driving gear 8 is sleeved on the top end of the driven shaft 22, the driving shaft 23 and the driven shaft 22 are connected through a gear set, the gear set comprises a first helical gear 25 sleeved on the outer wall of the end of the driving shaft 23 and a second helical gear 24 sleeved on the outer wall of the driven shaft 22, the first helical gear 25 and the second helical gear 24 are meshingly connected, the driving gear 8 meshingly connected with the driven gear disc 7 is sleeved on the top end of the rotating device 9, rotating the rotating device 9 drives the driving gear 8 to rotate, and the rotating force is output to the rotating pipe 5 through the driven gear disc 7 to change the angle of the water outlet pipe 6, in use, the municipal water pipe is connected with the water receiving pipe 10, so that water flow can be introduced into the water receiving pipe 10, when not in use, the water receiving pipe 10 is closed through the drain valve 12, when in use, the drain valve 12 can be rotated and opened on the ground through the extension rod 13, so that the water flow passes through the drain valve 12 and enters the water inlet pipe 1, the water passes through the water inlet pipe 1, the rotating pipe 5 and the water outlet pipe 6 in sequence and is then discharged from the water outlet pipe 6, after use, the drain valve 12 is closed through the extension rod 13, and the remaining water in the pipe is discharged outside through the drain valve 12, the drain valve 12 is a prior art and can be CN201320079800.8, thus avoiding the presence of water in the pipeline, and effectively preventing the phenomenon of pipe cracking caused by water freezing in cold areas, and the service life is longer and more adaptable. When the water outlet angle of the water outlet pipe 6 needs to be changed, the driving shaft 23 of the rotating device 9 can be twisted to rotate, which synchronously drives the first helical gear 25 of the gear set to rotate. The first helical gear 25 is meshed and connected with the second helical gear 24, and then the rotating force is output to the second helical gear 24 and the driven shaft 22 through the second helical gear 24. The driving gear 8 is provided at the top end of the driven shaft 22, and then the driving gear 8 is rotated and the rotating force is output to the driven gear 7 through the gear meshing. Then the rotating force is received by the driven gear 7 and applied to the rotating pipe 5, so that the twisted pipe 51 of the rotating pipe 5 is affected by the rotating force, and then the twisted pipe 51 is twisted along the fixed pipe 52. Thus, the water outlet pipe 6 connected with the twisted pipe 51 is synchronously driven to rotate, and then the angle of the water outlet is changed. The adjustment is simple, the water outlet angle is variable, and the adaptability is strong.

[0028] The water inlet pipe 10 is provided with a total valve 11 on the middle segment close to the input end. In daily use, the total valve 11 is in an open state for a long time, which is beneficial to control the opening and closing of the water inlet pipe 10 through the total valve 11. When the fire fighting water crane is overhauled, the total valve 11 can be closed, so that the overhaul is safer and water leakage is prevented.

[0029] The extension rod 13 is further provided with a protective sleeve 15 on the outer wall, which is beneficial to protect the extension rod 13 from rust and impact damage.

[0030] The extension rod 13 is detachably provided with a twisting handle 14 at the top end, which is beneficial to make the extension rod 13 twist more labor-saving and convenient.

[0031] The water inlet pipe 1 is further provided with an on-off valve 3 between the end and the rotating pipe 5, which is beneficial to control the overall connection and closing of the fire fighting pipeline through the on-off valve 3.

[0032] The on-off valve 3 is further provided with a coupler 2 between the end and the water inlet pipe 1, which is beneficial to connect the pipeline from the coupler 2 position to obtain more fire fighting water or fire fighting agent output port.

[0033] The driving shaft 23 is further provided with a second twisting handle 26 at the other end, which is beneficial to make the driving shaft 23 twist more labor-saving and convenient.

[0034] The rotating pipe 5 is further provided with a support frame 10 movably clamped on the middle segment of the driven shaft 22, which is beneficial to support the driven shaft 22 and avoid displacement or deformation after long-term use to affect the combination effect of the driving gear 8 and the driven gear 7.

[0035] The bottom of the twisting tube 51 is provided with an anti-slip block 53 that fits with the inner wall of the fixed tube 52. At the same time, the inner wall of the fixed tube 52 is provided with a protrusion for limiting the anti-slip block 53. This is conducive to limiting the longitudinal displacement of the twisting tube 53 through the anti-slip block 53, preventing it from sinking or being ejected by the impact of the water flow;

[0036] Several sealing rings 54 are provided between the inner wall of the fixed tube 52 and the outer wall of the bottom of the twisting tube 51. In this embodiment, two sealing rings are provided, which are conducive to filling the gap between the fixed tube 52 and the twisting tube 51, thereby greatly improving the leakage prevention performance.

[0037] The drain valve 12 is closed by rotating the extension rod 13 on the ground, and the water flows through the drain valve 12 and enters the water inlet pipe 1, so that the water enters through the water inlet pipe 1 and passes through the water inlet pipe 1, the rotating pipe 5 and the water outlet pipe 6 in sequence, and then is discharged outward from the water outlet pipe 6. After use, the drain valve 12 is closed by rotating the extension rod 13, and the remaining accumulated water in the pipe is discharged outward through the drain valve 12. The drain valve 12 is a prior art and can be the anti-freezing and energy-saving automatic drain valve recorded in CN201320079800.8, thereby avoiding water accumulation in the pipe, and effectively preventing the accumulated water from condensing into ice and causing the pipe to be frozen and cracked when used in cold areas. The service life is longer and the adaptability is stronger. When the water outlet angle of the water outlet pipe 6 needs to be changed, the driving shaft 23 of the rotating device 9 can be twisted to rotate, and the first bevel gear 25 of the gear set is synchronously driven to rotate. The first bevel gear 25 is meshed with the second bevel gear 24, and the rotational force is output to the second bevel gear 24 and the rotational force is output to the driven shaft 22 through the second bevel gear 24. A driving gear 8 is provided at the top of the driven shaft 22, so that the driving gear 8 rotates, and the rotational force is output to the driven gear plate 7 through the meshing of the teeth, and then the rotational force is received by the driven gear plate 7 and applied to the rotating tube 5, so that the torsion tube 51 of the rotating tube 5 is affected by the rotational force, and then rotates along the fixed tube 52, thereby synchronously driving the water outlet pipe 6 connected to the torsion tube 51 to rotate, thereby changing the water outlet angle, simple adjustment, variable water outlet angle and strong adaptability.

[0038] This utility model protects the product's structure; the component models are not the subject of this utility model's protection and are generally known technology. Any commercially available component that can achieve the aforementioned functions of this utility model can be used as an alternative. Therefore, component models and other parameters are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the components.

[0039] The basic principle and main features of the utility model and its advantages are shown and described above, and the person skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and the description in the description are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed, and the scope of protection of the utility model is defined by the appended claims and their equivalents. The utility model is not described in detail, which is the known technology of the person skilled in the art.

Claims

1. A rotary fire-fighting water crane, comprising an above-ground delivery pipe and a water receiving pipe (10) interconnected and fixedly connected to the bottom end of the above-ground delivery pipe, characterized in that: A drain valve (12) is provided in the middle section of the water receiving pipe (10), and an extension rod (13) extending upward to the ground surface is provided on the rotating shaft of the drain valve (12). The above-ground delivery pipe comprises an inlet pipe (1) which is interconnected and fixedly connected to the end of the water receiving pipe (10), and an outlet pipe (6) arranged at the end of the inlet pipe (1). A rotating pipe (5) is provided between the end of the outlet pipe (6) and the end of the water inlet pipe (1). A driven gear disc (7) is provided on the outer wall of the rotating pipe (5). A rotating device (9) is provided on the outer wall of the water inlet pipe (1). A driving gear (8) meshing with the driven gear disc (7) is sleeved on the top end of the rotating device (9). The rotating device (9) is rotated to drive the driving gear (8) to rotate, and the rotational force is output to the rotating pipe (5) through the driven gear disc (7) to change the angle of the water outlet pipe (6).

2. A rotary fire-fighting water crane according to claim 1, characterized in that: A main valve (11) is also provided on the middle section of the water receiving pipe (10) close to the input end.

3. The rotary fire-fighting water crane according to claim 1, characterized in that: The outer wall of the extension rod (13) is also sleeved with a protective sleeve (15).

4. The rotary fire-fighting water crane according to claim 1, characterized in that: The top end of the extension rod (13) is detachably provided with a twist handle (14).

5. The rotary fire-fighting water crane according to claim 1, characterized in that: An opening and closing valve (3) is also provided between the end of the water inlet pipe (1) and the rotating pipe (5).

6. The rotary fire-fighting water crane according to claim 5, characterized in that: A connector (2) is also provided between the opening and closing valve (3) and the end of the water inlet pipe (1).

7. The rotary fire-fighting water crane according to claim 1, characterized in that: The rotating device (9) comprises a connecting shell (21) fixedly arranged on the outer wall of the water inlet pipe (1) and a driving shaft (23) movably engaged and penetrating the side wall of the connecting shell (21); a driven shaft (22) is also penetrated through the connecting shell (21); a driving gear (8) is sleeved on the top end of the driven shaft (22); and the driving shaft (23) and the driven shaft (22) are connected via a gear set.

8. The rotary fire-fighting water crane according to claim 7, characterized in that: The gear set comprises a first helical gear (25) sleeved on the outer wall of the end of the driving shaft (23) and a second helical gear (24) sleeved on the outer wall of the driven shaft (22), wherein the first helical gear (25) is meshingly connected with the second helical gear (24).

9. The rotary fire-fighting water crane according to claim 8, characterized in that: A second twisting handle (26) is also provided at the other end of the driving shaft (23).

10. The rotary fire-fighting water crane according to claim 7, characterized in that: The outer wall of the rotating tube (5) is further provided with a support frame (10) that is movably engaged with the middle section of the driven shaft (22).

11. The rotary fire-fighting water crane according to claim 1, characterized in that: The rotating tube (5) comprises a fixed tube (52) and a twisting tube (51) movably engaged with the top end of the fixed tube (52), and a driven gear disc (7) is provided on the outer wall of the twisting tube (51).

12. The rotary fire-fighting water crane according to claim 11, characterized in that: The bottom of the twisting tube (51) is provided with an anti-slip block (53) that fits with the inner wall of the fixed tube (52), and the inner wall of the fixed tube (52) is provided with a protrusion for limiting the anti-slip block (53).

13. The rotary fire-fighting water crane according to claim 11, characterized in that: A plurality of sealing rings (54) are provided between the inner wall of the fixed tube (52) and the outer wall of the bottom of the twisting tube (51).

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