Fire extinguishing system
By jointly hanging the fire-fighting fire-fighting device with pulley components and cooperating with ropes, the fire-fighting needs of high-rise buildings are solved, the high hanging height and stability are achieved, and the fire-fighting effect is improved.
Patent Information
- Application Number
- CN202510996861.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-18
- Publication Date
- 2025-09-02
AI Technical Summary
The existing fire fighting fire extinguishing devices and systems are difficult to meet the fire extinguishing needs of high-rise buildings. The load-bearing capacity of a single aircraft is limited and cannot be equipped with a large-scale fire fighting fire extinguishing device. The height of the fire hose hanging is limited.
Multiple aircraft are used to jointly hang the fire-fighting fire-fighting device, and cooperate with the rope through pulley assembly. The pulley assembly includes a roller and a torsion-resistant arm to ensure the symmetry and stability of the fire-fighting assembly, reduce the uneven force caused by the incoordinated action of a single aircraft, and improve the uniformity of load distribution.
The high hanging height of fire-fighting fire-fighting devices and fire hoses is realized, which enhances the stability of the system and fire-fighting effect, reduces the difficulty of coordinated control of multiple aircraft, and ensures the stability and coverage of the injection direction.
Smart Images
Figure CN120571192A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of fire-fighting equipment, and in particular to a fire-fighting extinguishing system. Background Art
[0002] When a fire occurs in a building, a high-pressure water gun is usually used to spray water upwards to extinguish the fire. However, when a fire occurs in a high-rise building, the fire scene is far from the ground, and an aircraft is required to carry a fire extinguishing device to extinguish the fire. In the related art, the fire extinguishing device is carried on a single aircraft. Due to the limited load-bearing capacity of the aircraft, it is difficult to carry a heavy fire extinguishing device. When the fire extinguishing device is connected to a fire hose, a thicker fire hose is required to provide a larger water supply flow to suppress the spread of the fire. The thicker fire hose has higher load-bearing capacity requirements, and the higher the fire hose is hung, the longer the suspended fire hose is, and the heavier the weight is. Therefore, when a single aircraft is used to suspend the fire extinguishing device, the hanging height is easily limited. Therefore, the existing fire extinguishing devices and systems are difficult to meet the fire extinguishing needs of high-rise buildings. Summary of the Invention
[0003] The purpose of this application includes providing a fire extinguishing system that can better meet the fire extinguishing needs of high-rise buildings.
[0004] The embodiments of the present application can be implemented as follows: The present application provides a fire-fighting system, comprising a fire-extinguishing agent supply device, a fire hose, a fire-fighting fire-extinguishing device, a first lifting rope and at least two aircraft. The fire-fighting fire-extinguishing device comprises a fire-extinguishing assembly and a pulley assembly connected to the fire-extinguishing assembly. The fire-extinguishing assembly comprises an adapter and an injection component. The adapter has a cavity and an outlet and an inlet connected to the cavity. The injection component is detachably connected to the outlet. One end of the fire hose is connected to the inlet, and the other end of the fire hose is connected to the fire-extinguishing agent supply device. The pulley assembly comprises a roller, the outer peripheral side of the roller is matched with the first lifting rope, and the two ends of the first lifting rope are directly or indirectly connected to different aircraft respectively. The central axis of the inlet, the central axis of the outlet and the rotation axis of the roller are coplanar.
[0005] In an optional embodiment, the central axis of the inlet extends along a preset direction, and the pulley assembly is directly or indirectly connected to an end of the adapter away from the inlet in the preset direction.
[0006] In an optional embodiment, the pulley assembly further includes a pulley seat, the roller is rotatably connected to the pulley seat, a connecting structure is provided on the pulley seat, and the connecting structure of the pulley seat is directly or indirectly connected to the adapter.
[0007] In an optional embodiment, the fire extinguishing assembly further includes a tension detector, the two ends of which are respectively connected to the pulley seat and the adapter, and the tension detector is used to detect the tensile load borne by the pulley assembly.
[0008] In an optional embodiment, the pulley assembly further includes an anti-torsion arm, one end of the anti-torsion arm is connected to the pulley seat, and the other end of the anti-torsion arm is in sliding engagement with the first suspension rope.
[0009] In an optional embodiment, the pulley assembly includes at least two anti-torsion arms, and one end of the two anti-torsion arms away from the pulley seat is respectively in sliding engagement with the first suspension ropes extending from both sides of the roller.
[0010] In an optional embodiment, a ring is provided at one end of the anti-torsion arm away from the pulley seat, and the first lifting rope passes through the ring.
[0011] In an optional embodiment, the anti-torsion arm is rotatably connected to the pulley seat, and the rotation axis of the anti-torsion arm is parallel to the rotation axis of the roller.
[0012] In an optional embodiment, the connection structure includes a stud or a screw hole.
[0013] In an optional embodiment, the central axis of the inlet is perpendicular to the rotation axis of the roller.
[0014] In an optional embodiment, the adapter is provided with a connecting screw hole for direct or indirect connection with the pulley assembly, and the adapter is also provided with a locking screw hole, which passes through the outer surface of the adapter to the connecting screw hole. The fire extinguishing assembly also includes a locking screw, which cooperates with the locking screw hole and abuts against a stud that cooperates with the connecting screw hole.
[0015] In an optional embodiment, the angle between the orientation of the outlet and the orientation of the inlet is greater than or equal to 90°.
[0016] In an optional embodiment, the angle between the orientation of the outlet and the orientation of the inlet is 95° to 150°.
[0017] In an optional embodiment, a first joint is provided at the outlet, and the outlet is connected to the injection member through the first joint; a second joint is provided at the inlet, and the inlet is connected to the fire hose through the second joint.
[0018] In an optional embodiment, the first joint is welded or screwed to the adapter, and the first joint is snapped, plugged or screwed to the injection piece; the second joint is welded or screwed to the adapter, and the second joint is snapped or plugged to the fire hose.
[0019] In an optional embodiment, the spraying member is a spray gun or a fire monitor head.
[0020] In an optional embodiment, the fire extinguishing system includes at least four aircraft, and the fire extinguishing system also includes two second lifting ropes, the two ends of the first lifting rope are respectively connected between the two ends of the two second lifting ropes, and the two ends of the second lifting rope are respectively directly or indirectly connected to different aircraft.
[0021] In an optional embodiment, when the aircraft is in flight, the first suspension rope and the second suspension rope are coplanar.
[0022] The fire extinguishing system provided by the embodiment of the present application has the following beneficial effects: The fire extinguishing system provided by the present application includes a fire extinguishing agent supply device, a fire hose, a fire extinguishing device, a first sling, and at least two aircraft. The fire extinguishing device includes a fire extinguishing assembly and a pulley assembly connected to the fire extinguishing assembly. The fire extinguishing assembly includes an adapter and an ejection member. The adapter has a cavity and an outlet and an inlet connected to the cavity. The ejection member is detachably connected to the outlet. One end of the fire hose is connected to the inlet, and the other end of the fire hose is connected to the fire extinguishing agent supply device. The pulley assembly is directly or indirectly connected to the adapter. The pulley assembly includes a roller. The outer peripheral side of the roller cooperates with the first sling. The two ends of the first sling are directly or indirectly connected to different aircraft. The central axis of the inlet, the central axis of the outlet, and the rotation axis of the roller are coplanar. In the fire extinguishing system provided by the present application, a fire extinguishing device can be jointly suspended by two or more aircraft. The multiple aircraft have a higher load-bearing capacity as a whole, and the fire extinguishing device and fire hose can be suspended to a higher position, which can better meet the fire extinguishing needs of high-rise buildings. In addition, because a pulley assembly is used to cooperate with the first suspension rope, the pulley assembly and the fire extinguishing assembly can slide along the first suspension rope. This evenly distributes the load borne by the aircraft, reduces the uneven force between multiple aircraft caused by the uncoordinated movement of a single aircraft, and is beneficial to the stability of the fire extinguishing system. It also significantly reduces the difficulty of coordinating and controlling multiple aircraft. In addition, the central axis of the inlet of the adapter, the central axis of the outlet, and the rotation axis of the roller are coplanar, making the overall symmetry of the fire extinguishing device better. When the fire extinguishing assembly sprays fire extinguishing agent, the recoil force generated by the spray element can act on the central axis of the inlet, and no torque around the central axis of the inlet is generated. This helps prevent the fire extinguishing assembly from twisting and makes the spray direction of the spray element easier to control. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.
[0024] Figure 1 This is a schematic diagram of a fire extinguishing system arranged in a straight line in one embodiment of the present application; Figure 2This is a schematic diagram of a fire extinguishing system arranged in a quadrilateral shape in one embodiment of the present application; Figure 3 This is a schematic diagram of a fire extinguishing device in the first embodiment of the present application; Figure 4 This is a cross-sectional view of a fire extinguishing device in the first embodiment of the present application; Figure 5 This is a schematic diagram of the cooperation between the first suspension rope and the pulley assembly in one embodiment of the present application; Figure 6 This is a cross-sectional view of a first suspension rope and pulley assembly in one embodiment of the present application; Figure 7 This is a schematic diagram of an adapter in one embodiment of the present application; Figure 8 This is a schematic diagram of the first connector in the first embodiment of the present application; Figure 9 This is a schematic diagram of the injection member in the first embodiment of the present application; Figure 10 This is a schematic diagram of a fire extinguishing device in the second embodiment of the present application; Figure 11 This is a cross-sectional view of a fire extinguishing device in the second embodiment of the present application.
[0025] Icons: 100-Fire extinguishing device; 110-Pulley assembly; 111-Pulley seat; 1111-End plate; 1112-Base plate; 1113-Connecting structure; 112-Roller; 1121-Limiting groove; 113-Anti-torsion arm; 1131-Ring; 114-Rotating shaft; 1141-Sleeve; 1142-Second bearing; 115-Locking nut; 116-Mounting column; 120-Fire extinguishing assembly; 121-Adapter; 1211-Inlet; 1212-Outlet; 1213-Locking screw hole; 1214-locking screw; 122-injection piece; 1221-second locking groove; 1222-second flange; 1223-second snap-fit portion; 1224-second snap-fit slot; 123-first joint; 1231-first locking groove; 1232-first flange; 1233-first snap-fit portion; 1234-first snap-fit slot; 124-second joint; 125-tension tester; 210-first lifting rope; 220-second lifting rope; 300-fire hose; 400-aircraft; 500-sliding device. DETAILED DESCRIPTION
[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0027] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.
[0029] In the description of this application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the invented product is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application.
[0030] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.
[0031] It should be noted that, in the absence of conflict, the features in the embodiments of this application can be combined with each other.
[0032] In the prior art, firefighting equipment is often carried out on aircraft when extinguishing high-rise buildings. However, the limited load-bearing capacity of a single aircraft prevents it from carrying heavier firefighting equipment, limiting the effectiveness of firefighting. Furthermore, when firefighting equipment is connected to a fire hose, the higher the altitude, the longer and heavier the suspended fire hose becomes. Existing aircraft have difficulty suspending firefighting equipment and fire hoses at high altitudes, making it difficult to meet the firefighting needs of high-rise buildings.
[0033] To this end, an embodiment of the present application provides a fire extinguishing system. By setting a pulley assembly in the fire extinguishing device and configuring multiple aircraft to jointly suspend the fire extinguishing device, it is beneficial to increase the hanging height of the fire extinguishing device and the fire hose, and can better meet the fire extinguishing needs of high-rise buildings.
[0034] Figure 1 This is a schematic diagram of a fire extinguishing system arranged in a straight line in one embodiment of the present application; Figure 2 This is a schematic diagram of a fire extinguishing system arranged in a quadrilateral shape in one embodiment of the present application. Figure 1 and Figure 2 As shown, the fire extinguishing system provided in an embodiment of the present application includes a fire extinguishing agent supply device (not shown), a fire hose 300, a fire extinguishing device 100, a first sling 210, and at least two aircraft 400. The first sling 210 is coupled to a pulley assembly 110, and both ends of the first sling 210 are directly or indirectly connected to different aircraft 400. One end of the fire hose 300 is connected to the fire extinguishing assembly 120, and the other end of the fire hose 300 is connected to the fire extinguishing agent supply device. Specifically, the aircraft 400 includes, but is not limited to, drones, and the fire extinguishing agent supply device includes, but is not limited to, fire trucks.
[0035] Optionally, the fire extinguishing system includes four aircraft 400 and two second slings 220. The ends of the first sling 210 are respectively connected between the ends of the two second slings 220, and the ends of the second slings 220 are respectively connected to different aircraft 400. By using multiple aircraft 400 to construct a fire extinguishing system, the load capacity of the fire extinguishing system can be increased, and heavier fire extinguishing devices 100 can be suspended. When the fire extinguishing devices 100 are connected to the fire hose 300, the fire extinguishing devices 100 and the fire hose 300 can be suspended higher, better meeting the fire extinguishing needs of high-rise buildings. It should be understood that the fire extinguishing system can also include more aircraft 400 and correspondingly more slings. For example, each end of the second sling 220 is connected to a third sling, and more aircraft 400 are indirectly connected via the third sling.
[0036] Taking the fire extinguishing system including four aircraft 400 as an example, optionally, when the aircraft 400 is in flight, the first suspension rope 210 and the second suspension rope 220 are coplanar, that is, the aircraft 400 are arranged in a straight line, such as Figure 1 In this case, the fire extinguishing device 100 can be placed as close to the fire scene as possible without interference from buildings, so as to achieve better fire extinguishing effect. In other embodiments, the layout of the aircraft 400 can also be adjusted as needed, such as by Figure 2 The quadrilateral arrangement shown.
[0037] Figure 3 This is a schematic diagram of a fire extinguishing device 100 in the first embodiment of the present application; Figure 4 FIG. 1 is a cross-sectional view of a fire extinguishing device 100 in the first embodiment of the present application. Figure 3 and Figure 4As shown, the fire extinguishing device 100 provided in an embodiment of the present application includes a fire extinguishing assembly 120 and a pulley assembly 110 connected to the fire extinguishing assembly 120. The pulley assembly 110 is configured to cooperate with a first sling 210, which is used to spray a fire extinguishing agent, including but not limited to water, dry powder fire extinguishing agent, and foam fire extinguishing agent. By connecting the first sling 210 via an aircraft 400, the fire extinguishing assembly 120 and a fire hose 300 can be transported to a location near a fire in a high-rise building, where the fire extinguishing agent can then be sprayed toward the fire to extinguish the fire. The pulley assembly 110 is configured to cooperate with the first sling 210, allowing the fire extinguishing device 100 to slide along the first sling 210. The fire extinguishing assembly 120 is connected to the fire hose 300, which supplies the fire extinguishing agent to the fire extinguishing assembly 120, which then sprays the fire extinguishing agent toward the fire to extinguish the fire. In this application, the fire extinguishing agent transported by the fire hose 300 includes but is not limited to water. The material of the fire hose 300 can be appropriately adjusted according to the fire extinguishing agent transported. The fire hose 300 can also be replaced with other delivery pipes that have the function of transporting fire extinguishing agent and are suitable for hanging.
[0038] Figure 5 This is a schematic diagram of the cooperation between the first suspension rope 210 and the pulley assembly 110 in one embodiment of the present application; Figure 6 This is a cross-sectional view of the first suspension rope 210 and the pulley assembly 110 in one embodiment of the present application. Figures 3 to 6 The pulley assembly 110 provided in the embodiment of the present application includes a pulley seat 111 and a roller 112. The roller 112 is rotatably connected to the pulley seat 111. The outer peripheral side of the roller 112 is used to cooperate with the first suspension rope 210. A connecting structure 1113 is provided on the pulley seat 111. The connecting structure 1113 of the pulley seat 111 is connected to the fire extinguishing assembly 120.
[0039] In this embodiment, the pulley assembly 110 further includes an anti-torsion arm 113, one end of which is connected to the pulley seat 111, and the other end of which is configured to slideably engage with the first suspension rope 210. In this embodiment of the present application, when the suspended fire extinguishing assembly 120 causes the pulley assembly 110 to twist, the end of the anti-torsion arm 113 can abut against the taut first suspension rope 210. The reaction force exerted by the taut first suspension rope 210 on the anti-torsion arm 113 resists the rotation of the anti-torsion arm 113, that is, resists the rotation of the pulley assembly 110 as a whole, thereby resisting the rotation of the fire extinguishing assembly 120. Because the end of the anti-torsion arm 113 slides with the first suspension rope 210, it does not affect the tangential movement of the first suspension rope 210 along the roller 112, thereby maintaining the pulley's function.
[0040] It is understood that the torque applied to the first suspension rope 210 wound around the roller 112 is related to the displacement from the point of force application to the rotation axis and the magnitude of the force. For forces of the same magnitude, the greater the displacement, the greater the torque. In this application, the rotation axis is the vertical axis passing through the connecting structure 1113 of the pulley seat 111. Without the anti-torsion arm 113, the distance L1 from the point of force application from the pulley assembly 110 on the first suspension rope 210 wound around the roller 112 to the rotation axis is equal to the distance from the point of tangency between the first suspension rope 210 and the roller 112 to the rotation axis. When the anti-torsion arm 113 is installed, the first suspension rope 210 corresponding to the anti-torsion arm 113 is taut, and its connection to the roller 112 can be considered as a nearly rigid connection. At this point, the point where the force from the pulley assembly 110 acts on the first suspension rope 210 is located at the end of the anti-torsion arm 113 (specifically, the end away from the pulley seat 111). The distance L2 from this point of action to the rotation axis is equal to the distance from the rotation axis to the point where the first suspension rope 210 contacts the end of the anti-torsion arm 113 away from the pulley seat 111. Clearly, L2 is greater than L1. Therefore, with the anti-torsion arm 113, the first suspension rope 210 can resist greater torque and is less susceptible to twisting due to external forces. This also reduces the likelihood of twisting due to external forces on the pulley assembly 110 and the fire extinguishing assembly 120 connected thereto.
[0041] Because the pulley assembly 110 is provided with an anti-torsion arm 113, the suspended fire-fighting device 100 is not easily rotated along the vertical axis, which facilitates controlling the orientation of the fire-fighting assembly 120. Furthermore, because the ejection member 122 extends forward, it has a tendency to rotate downward under its own weight, creating a risk of "drooping." Furthermore, because the fire-fighting assembly 120 generates recoil when spraying fire extinguishing agent, the ejection member 122 of the fire-fighting device 100 may also have a tendency to "droop." However, thanks to the longer lever arm provided by the anti-torsion arm 113, the ejection member 122 can be effectively prevented from drooping, maintaining a stable spray direction.
[0042] In this embodiment, the pulley assembly 110 includes at least two anti-torsion arms 113. The ends of the two anti-torsion arms 113, which are remote from the pulley seat 111, are respectively configured to slidably engage with the first suspension ropes 210 extending from both sides of the roller 112. In this embodiment, the two anti-torsion arms 113 are connected to the same side of the pulley seat 111, specifically, the same side in the axial direction of the roller 112. In other optional embodiments, the two anti-torsion arms 113 may be connected to opposite sides of the pulley seat 111. In other optional embodiments, the pulley assembly 110 may include only one anti-torsion arm 113, or may include three or more anti-torsion arms 113.
[0043] In this embodiment, a ring 1131 is provided at one end of the anti-torsion arm 113 away from the pulley seat 111, and the ring 1131 is used for the first suspension rope 210 to pass through, that is, the first suspension rope 210 passes through the ring 1131. Figure 5 and Figure 6 As shown, the collar 1131 does not affect the tangential movement of the first suspension rope 210 along the roller 112 , but when the pulley assembly 110 twists around the vertical axis, the collar 1131 abuts against the taut first suspension rope 210 , thereby limiting the twisting of the pulley assembly 110 .
[0044] Optionally, the anti-torque arm 113 is rotatably connected to the pulley seat 111, with the rotation axis of the anti-torque arm 113 parallel to the rotation axis of the roller 112. This arrangement allows the anti-torque arm 113 to rotate synchronously with the rotation of the first suspension rope 210 when the angle between the first suspension ropes 210 on either side of the roller 112 changes, thereby preventing excessive interference with the first suspension ropes 210. Optionally, a mounting post 116 is provided on the pulley seat 111. The mounting post 116 can be fitted with a first bearing. The end of the anti-torque arm 113 fits over the outer ring of the first bearing. The end of the mounting post 116 facing away from the pulley seat 111 can be threadedly engaged with a nut, thereby limiting the position of the first bearing and the end of the anti-torque arm 113. A gasket can be provided between the nut and the first bearing. Optionally, the mounting post 116 includes, but is not limited to, a semi-threaded screw, which passes through the pulley seat 111 and has its end threadedly engaged with the nut. The first bearing is mounted on the outer side of the smooth cylindrical surface of the semi-threaded screw. Optionally, the semi-threaded screw includes but is not limited to a countersunk screw, and the type of the first bearing includes but is not limited to a deep groove ball bearing, a needle bearing, and a roller bearing; in other embodiments, the first bearing may be omitted, and the end of the anti-torsion arm 113 may be directly mounted on the mounting column 116.
[0045] Optionally, the pulley seat 111 forms a pulley groove, in which at least a portion of the roller 112 is accommodated, and the pulley assembly 110 further includes a rotating shaft 114 extending through the pulley groove, with the roller 112 rotatably engaged with the rotating shaft 114. The provision of the pulley groove protects the roller 112, and the two ends of the rotating shaft 114 are connected to the two side walls of the pulley groove, thereby improving the reliability of the roller 112.
[0046] Furthermore, the pulley seat 111 includes two end plates 1111 and a bottom plate 1112. The two end plates 1111 are spaced apart in the axial direction of the roller 112. The rotating shaft 114 is connected to the two end plates 1111. The edge of the bottom plate 1112 is connected to the edges of the two end plates 1111. The bottom plate 1112 is curved in an arc shape around the rotation axis of the roller 112. The two end plates 1111 and the bottom plate 1112 together form a pulley groove. The bottom plate 1112 is curved and adapted to the shape of the roller 112. This can minimize the volume of the pulley seat 111 and improve the compactness of the pulley assembly 110.
[0047] Furthermore, in order to reduce the frictional resistance between the roller 112 and the rotating shaft 114 and improve the smoothness of the rotation of the roller 112, in this embodiment, the rotating shaft 114 is provided with a second bearing 1142, and the roller 112 is sleeved on the outside of the second bearing 1142. Optionally, the type of the second bearing 1142 includes but is not limited to a deep groove ball bearing. In this embodiment, the rotating shaft 114 is formed by a bolt, which passes through the two end plates 1111 and then engages with a locking nut 115. A sleeve 1141 is provided between the end plate 1111 near the locking nut 115 and the rotating shaft 114. The sleeve 1141 can fill the gap between the rotating shaft 114 and the through hole on the end plate 1111, thereby limiting the radial displacement of the rotating shaft 114. The sleeve 1141 can also abut the inner ring of the second bearing 1142, thereby axially limiting the second bearing 1142. A flange is provided at one end of the sleeve 1141 near the locking nut 115. This flange protrudes radially from the sleeve 1141 and can abut between the outer surface of the end plate 1111 and the locking nut 115, thereby preventing the outer surface of the end plate 1111 from being directly rubbed by the locking nut 115. Furthermore, the rotating shaft 114 has a stepped surface. When the flange of the sleeve 1141 abuts the outer surface of the end plate 1111, the stepped surface of the sleeve 1141 and the rotating shaft 114 clamp the second bearing 1142, positioning the second bearing 1142 in the middle of the pulley groove, thereby ensuring that the roller 112 is positioned in the middle of the pulley groove.
[0048] In this embodiment, a limiting groove 1121 for cooperating with the first suspension rope 210 is provided on the outer peripheral side of the roller 112. When the first suspension rope 210 cooperates with the roller 112, the first suspension rope 210 is embedded in the limiting groove 1121. The limiting groove 1121 can reduce the risk of the first suspension rope 210 falling off the roller 112, thereby improving the reliability of the pulley assembly 110.
[0049] Optionally, the connection structure 1113 includes a stud or a screw hole. However, the present application is not limited thereto, and the connection structure 1113 may also be a structure capable of implementing other connection methods, including but not limited to a snap-on connection structure, a plug-in connection structure, and the like.
[0050] exist Figure 5 and Figure 6 In the illustrated embodiment, the connection structure 1113 is a stud that can be connected to a connecting screw hole on the fire extinguishing assembly 120, thereby lifting the fire extinguishing assembly 120 for fire extinguishing operations. In other embodiments, the connection structure 1113 can also be a screw hole that mates with a stud on the fire extinguishing assembly 120.
[0051] Figure 7 This is a schematic diagram of the adapter 121 in one embodiment of the present application. Figure 3 、 Figure 4 and Figure 7 The fire extinguishing assembly 120 of the present application includes an adapter 121 and a spray member 122. The adapter 121 has a cavity and an outlet 1212 and an inlet 1211 connected to the cavity. The spray member 122 is detachably connected to the outlet 1212, and one end of the fire hose 300 is connected to the inlet 1211. The fire hose 300 can supply the fire extinguishing agent of the fire extinguishing agent supply device to the cavity of the adapter 121 through the inlet 1211 of the adapter 121. The fire extinguishing agent enters the spray member 122 from the outlet 1212 and can be sprayed by the spray member 122 to the fire scene, thereby achieving the purpose of extinguishing the fire. The spray member 122 is detachably connected to the outlet 1212, making it easy to load and unload the spray member 122 and allowing the type to be changed as needed.
[0052] In this embodiment, the central axis of the inlet 1211 of the adapter 121 extends along a predetermined direction, and the pulley assembly 110 is directly connected to an end of the adapter 121 away from the inlet 1211 in the predetermined direction. Figure 5 and Figure 6 In the embodiment, the preset direction is the up-down direction. In actual use, the preset direction is the vertical direction. In this embodiment, the pulley assembly 110 is directly connected to the adapter 121. Specifically, the connection structure 1113 of the pulley seat 111 of the pulley assembly 110 is directly connected to the adapter 121. The end of the adapter 121 connected to the pulley assembly 110 (specifically, the pulley seat 111 of the pulley assembly 110) is provided with a connecting screw hole. The connecting screw hole is threadedly connected to the connecting structure 1113 (a stud in this embodiment) on the pulley seat 111 of the pulley assembly 110. Optionally, the centerline of the connecting screw hole on the adapter 121 that connects to the connecting structure 1113 on the pulley seat 111 of the pulley assembly 110 is coaxial with the center axis of the inlet 1211 of the adapter 121. Since the inlet 1211 and the connecting screw hole of the adapter 121 are the two points of force for the tension exerted on the adapter 121, when the fire extinguishing assembly 120 is lifted, the inlet 1211 of the adapter 121 and the connecting screw hole will be facing each other in the vertical direction. By making the center line of the connecting screw hole coaxial with the center axis of the inlet 1211 of the adapter 121, the center axes of the inlet 1211, the connecting screw hole and the stud of the pulley seat 111 can all extend in the vertical direction, consistent with the direction of the tensile load. The stud is only subjected to tension in the axial direction of itself and will not be subjected to radial force, thereby ensuring the reliability of the stud.
[0053] In an optional embodiment, a boss is provided at one end of the adapter 121 connected to the pulley assembly 110, and a connecting screw hole connected to the connecting structure 1113 (stud) is provided on the boss, and the cross-sectional shape of the boss includes but is not limited to a circle, an ellipse or a polygon.
[0054] In this embodiment, the central axis of the inlet 1211 of the adapter 121, the central axis of the outlet 1212, and the rotation axis of the roller 112 are coplanar, so that the fire extinguishing device 100 has better overall symmetry. When the fire extinguishing component 120 sprays the fire extinguishing agent, the recoil force generated by the injection component 122 can act on the central axis of the inlet 1211, and no torque around the central axis of the inlet 1211 is generated, which is beneficial to prevent the fire extinguishing component 120 from twisting and makes the injection direction of the injection component 122 easy to control. Furthermore, the central axis of the inlet 1211, the central axis of the outlet 1212 and the rotation axis of the roller 112 of the pulley assembly 110 are coplanar, and the central axis of the inlet 1211 is perpendicular to the rotation axis of the roller 112 of the pulley assembly 110. In this case, the plane where the central axis of the inlet 1211 and the central axis of the outlet 1212 are located is perpendicular to the plane where the roller 112 is located, and the roller 112 is coplanar with the first suspension rope 210. Therefore, the plane where the central axis of the inlet 1211 and the central axis of the outlet 1212 are located is perpendicular to the plane where the roller 112 and the first suspension rope 210 are located, so that the recoil force can act on the central axis of the inlet 1211 and can be evenly distributed to the first suspension ropes 210 on both sides of the pulley assembly 110, which can effectively prevent the fire extinguishing assembly 120 from twisting, facilitate the control of the spraying direction of the spray member 122, and at the same time make the force on multiple aircraft 400 more uniform, thereby improving the stability of the system.
[0055] Because the adapter 121 is provided with a connecting screw hole for direct or indirect connection with the pulley assembly 110, and the pulley assembly 110 and the adapter 121 are threaded together, there is an issue of uncertain rotation angle after tightening. Moreover, relative rotation may occur during use, resulting in the plane where the central axis of the inlet 1211 and the central axis of the outlet 1212 are not perpendicular to the plane where the roller 112 is located, and the direction of the injection member 122 is difficult to control. To this end, in this embodiment, the adapter 121 is also provided with a locking screw hole 1213, which extends from the outer surface of the adapter 121 to the connecting screw hole. The fire extinguishing assembly 120 also includes a locking screw 1214, which cooperates with the locking screw hole 1213 and abuts against a stud that cooperates with the connecting screw hole (such as the connecting structure 1113 on the pulley seat 111). Optionally, a locking screw hole 1213 is provided on the side wall of the boss of the adapter 121 and extends from the side wall of the boss to a connecting screw hole for engaging with the connecting structure 1113 (stud) of the pulley seat 111. Locking screw 1214 engages with locking screw hole 1213, allowing locking screw 1214 to abut the stud (i.e., the connecting structure 1113) in the connecting screw hole and limit the stud to prevent it from rotating relative to the connecting screw hole, thereby controlling the orientation of the injection member 122 relative to the pulley assembly 110 and achieving the purpose of controlling the injection direction of the injection member 122.
[0056] Furthermore, the angle A between the orientation of outlet 1212 and the orientation of inlet 1211 is greater than 90°. It will be appreciated that after the ejection member 122 is installed in the outlet 1212, the central axis of the ejection member 122 coincides with the central axis of the outlet 1212, and the orientation of the ejection member 122 is consistent with the orientation of the outlet 1212. By setting the angle A greater than 90°, the ejection member 122 is tilted upward during use, achieving an elevation-angled spray. Because the ejected fire extinguishing agent (such as water) follows a parabolic trajectory, an elevation angle helps the extinguishing agent be sprayed farther, covering a greater horizontal distance and facilitating fire extinguishing at higher locations. Optionally, the angle A between the orientation of outlet 1212 and the orientation of inlet 1211 is between 95° and 150°; further, the angle A between the orientation of outlet 1212 and the orientation of inlet 1211 is between 105° and 135°. If angle A is too large, the elevation angle of ejection element 122 will be too large, resulting in dispersed water flow, weakened impact force, increased recoil force, and reduced fire extinguishing efficiency. If angle A is too small, the elevation angle of ejection element 122 will be too small, resulting in a narrow coverage area, making it difficult to reach high or distant targets and unable to cover large fire areas. In this application, the size of angle A can be adjusted appropriately based on actual needs. Optionally, ejection element 122 can be a rotating body, with the central axis of ejection element 122 being the axis of the rotating body.
[0057] In other optional embodiments, depending on the requirements of the application scenario, the angle A between the orientation of the outlet 1212 and the orientation of the inlet 1211 can also be 90° (i.e., the orientation of the outlet 1212 is perpendicular to the orientation of the inlet 1211), or even an acute angle (the orientation of the injection member 122 is tilted downward in the working state).
[0058] Optionally, the injection member 122 is a spray gun or a fire cannon head. In this embodiment, the injection member 122 is a spray gun, which has a gradually shrinking inner cavity, which is conducive to converging the fire extinguishing agent and ejecting it at a higher speed and a longer range.
[0059] In this embodiment, the adapter 121 is provided with a first connector 123 at the outlet 1212, through which the outlet 1212 is connected to the injection member 122; and a second connector 124 is provided at the inlet 1211, through which the inlet 1211 can be connected to the fire hose 300. The provision of the first connector 123 and the second connector 124 allows the adapter 121 to be compatible with the connectors provided with the injection member 122 and the fire hose 300, enabling quick assembly and disassembly.
[0060] Optionally, the first joint 123 is welded or screwed to the adapter 121, and the first joint 123 is snap-fitted, plug-fitted or screwed to the injection member 122; the second joint 124 is welded or screwed to the adapter 121, and the second joint 124 can be snap-fitted or plug-fitted to the fire hose 300 (specifically the quick connector on the fire hose 300).
[0061] Figure 8 This is a schematic diagram of the first connector 123 in the first embodiment of the present application; Figure 9 FIG. 1 is a schematic diagram of the injection member 122 in the first embodiment of the present application. Figure 8 and Figure 9 As shown, in this embodiment, the first joint 123 is a card-type joint, and an external thread is provided on the first joint 123, and the external thread cooperates with the internal thread at the outlet 1212; the first joint 123 is card-connected with the injection member 122.
[0062] Specifically, the first connector 123 is provided with a first locking groove 1231, which extends around the central axis of the first connector 123. A first flange 1232 is provided at the opening of the first locking groove 1231. The first flange 1232 is disposed on the outer sidewall of the first locking groove 1231 and protrudes inward. The first connector 123 is also provided with a first snap-fit portion 1233, which forms a first snap-fit portion 1234 with an opening facing radially outward. In this embodiment, there are two first locking grooves 1231, two first flanges 1232, and two first snap-fit portions 1233. Optionally, the two first locking grooves 1231, the two first flanges 1232, and the two first snap-fit portions 1233 are all rotationally symmetrically arranged along the central axis of the first connector 123. Correspondingly, the injection member 122 is provided with a second locking groove 1221, which extends around the central axis of the injection member 122. A second flange 1222 is provided at the opening of the second locking groove 1221, which is disposed on the outer sidewall of the second locking groove 1221 and protrudes inward. The second connector 124 is also provided with a second snap-fit portion 1223, which forms a radially outward second snap-fit portion 1224. In this embodiment, there are two second locking grooves 1221, two second flanges 1222, and two second snap-fit portions 1223; optionally, the two second locking grooves 1221, the two second flanges 1222, and the two second snap-fit portions 1223 are all rotationally symmetrically arranged along the central axis of the injection member 122.
[0063] When the first connector 123 is mated with the injection member 122, the first latch portion 1233 and the second latch portion 1223 are first inserted into the second locking groove 1221 and the first locking groove 1231, respectively. Then, the injection member 122 is rotated 90 degrees around its own axis. At this time, the first flange 1232 can be inserted into the second latch portion 1224 of the second latch portion 1223, and the second flange 1222 can be inserted into the first latch portion 1234 of the first latch portion 1233. This prevents the injection member 122 and the first connector 123 from being axially separated.
[0064] Similarly, when the second joint 124 is a card-type joint, the specific structure of the second joint 124 can refer to the first joint 123, and the connection method between the second joint 124 and the fire hose 300 can refer to the connection method between the first joint 123 and the injection member 122, which will not be repeated here.
[0065] Figure 10 This is a schematic diagram of a fire extinguishing device 100 in a second embodiment of the present application; Figure 11 FIG. 1 is a cross-sectional view of a fire extinguishing device 100 in the second embodiment of the present application. Figure 10 and Figure 11 As shown, compared with Figure 3 、 Figure 4 In the illustrated embodiment, the fire extinguishing assembly 120 in this embodiment further includes a tension meter 125. The tension meter 125 is connected at both ends to the pulley assembly 110 and the adapter 121, respectively. The tension meter 125 is used to detect the tensile load borne by the pulley assembly 110. The tension meter 125 can detect the load of the pulley assembly 110 in real time, so that the operating status of the fire extinguishing device 100 can be adjusted in a timely manner. Taking the fire extinguishing assembly 120 connected to the fire hose 300 as an example, the higher the hanging height, the longer the suspended fire hose 300, the greater the tensile load between the fire extinguishing assembly 120 and the pulley assembly 110, and the greater the load on the aircraft 400. Furthermore, the greater the flow rate sprayed by the fire extinguishing assembly 120, the stronger the recoil, which also causes an increase in the load on the aircraft 400. By real-time monitoring of the tensile load on pulley assembly 110 and timely adjusting the flight altitude and jet flow rate of aircraft 400 based on the tensile load, overload of aircraft 400 caused by excessive suspension altitude or excessive jet flow can be avoided, thereby improving the safety of fire extinguishing device 100 and the fire extinguishing system. Tension detector 125 can communicate with aircraft 400 and / or a ground control center via wireless communication.
[0066] In this embodiment, the adapter 121 is indirectly connected to the pulley assembly 110, and the pulley assembly 110 is indirectly connected to one end of the adapter 121 that is away from the inlet 1211 in a predetermined direction. Specifically, the adapter 121 is indirectly connected to the pulley assembly 110 via the tension gauge 125. Furthermore, the connection structure 1113 of the pulley seat 111 of the pulley assembly 110 is indirectly connected to the adapter 121. Specifically, the tension gauge 125 has two connecting portions at each end, and the two connecting portions are respectively connected to the adapter 121 and the connection structure 1113 of the pulley seat 111. Specifically, in this embodiment, both connecting portions are studs, the connection structure 1113 on the pulley seat 111 is a screw hole, and the adapter 121 is also provided with a screw hole connected to the connecting portion. Optionally, the centerline of the connecting screw hole on the adapter 121 that connects to the connection portion of the tension gauge 125 is coaxial with the central axis of the inlet 1211 of the adapter 121. Since the inlet 1211 and the connecting screw hole of the adapter 121 are the two points of force for the tension exerted on the adapter 121, when the fire extinguishing assembly 120 is lifted, the inlet 1211 of the adapter 121 and the connecting screw hole will be facing each other in the vertical direction. By making the center line of the connecting screw hole coaxial with the center axis of the inlet 1211 of the adapter 121, the center axes of the inlet 1211, the connecting screw hole and the connecting part of the tension detector 125 can all extend in the vertical direction, consistent with the direction of the tension load. The connecting part of the tension detector 125 is only subjected to tension in the axial direction of the inlet, and will not be subjected to radial force, thereby ensuring the reliability of the connecting part of the tension detector 125.
[0067] In an optional embodiment, the structure of the adapter 121 may be similar to that of the first embodiment, and a boss is provided at one end of the adapter 121 connected to the tension detector 125. The connecting screw hole on the adapter 121 connected to the connecting part of the tension detector 125 is provided on the boss, and the cross-sectional shape of the boss includes but is not limited to a circle, an ellipse or a polygon.
[0068] In order to ensure that the injection member 122 of the fire extinguishing assembly 120 has a certain direction, in an optional embodiment of the present application, a locking screw hole 1213 is provided on the pulley seat 111. Specifically, the locking screw hole 1213 is provided on the end plate 1111 of the pulley seat 111, and passes through the end plate 1111 of the pulley seat 111 to the screw hole used for connecting with the connecting part (stud) of the tension detector 125. In other optional embodiments of the present application, both the adapter 121 and the pulley seat 111 are provided with locking screw holes 1213. Specifically, the locking screw holes 1213 are provided on the pulley seat 111 in a manner similar to the aforementioned embodiment. The locking screw holes 1213 are provided on the adapter 121 in such a manner that the locking screw holes 1213 are provided on the side walls of the adapter 121 (which may be the side walls of the boss of the adapter 121), and pass through the side walls of the adapter 121 (which may be the side walls of the boss of the adapter 121) to the connecting screw holes for connecting to the connecting portion (stud) of the tension detector 125. The locking screw holes 1213 at these two locations can respectively limit the relative rotation of the threaded connection by means of locking screws 1214 (see Figure 11 During assembly, the pulley seat 111 and the tension gauge 125 can be screwed together first, and then the tension gauge 125 and the adapter 121 can be screwed together until the central axis of the ejection member 122 and the rotation axis of the roller 112 are coplanar, and then the locking screw 1214 can be screwed into the locking screw hole 1213 on the pulley seat 111 and the locking screw hole 1213 on the adapter 121 respectively to limit the relative rotation of the threaded connection. Alternatively, the adapter 121 and the tension gauge 125 can be screwed together first, and then the tension gauge 125 and the pulley seat 111 can be screwed together until the central axis of the ejection member 122 and the rotation axis of the roller 112 are coplanar, and then the locking screw 1214 can be screwed into the locking screw hole 1213 on the pulley seat 111 and the locking screw hole 1213 on the adapter 121 respectively to limit the relative rotation of the threaded connection.
[0069] In other optional embodiments of the present application, two locking screw holes 1213 are provided on the adapter 121 and / or two locking screw holes 1213 are provided on the pulley seat 111 (optionally, the two locking screw holes 1213 are respectively provided on the two end plates 1111 of the pulley seat 111), but the present application is not limited to this. The number of locking screw holes 1213 provided on the adapter 121 and the pulley seat 111 can be adjusted according to actual needs.
[0070] In an optional embodiment, the injection member 122 is a fire monitor head; compared with a spray gun, a fire monitor head has a larger flow rate and is more effective in extinguishing high-rise fires.
[0071] In this embodiment, both ends of the first connector 123 are provided with external threads, respectively, so as to cooperate with the internal threads of the injection part 122 and the adapter 121, respectively. Optionally, the second connector 124 is a quick-connect connector, one end of the second connector 124 is provided with external threads, so as to cooperate with the internal threads of the inlet 1211, and the other end is plugged into and cooperated with the quick connector on the fire hose 300. When the quick-connect connector is inserted into the quick connector of the fire hose 300, the two are locked and can prevent axial falling off. The quick-connect connector can be a fire-fighting standard part, and its specific structure and principle can refer to the existing technology and will not be repeated here. It can be understood that the types of the first connector 123 and the second connector 124 can be adjusted as needed, including but not limited to card connectors and quick-connect connectors.
[0072] In the embodiment of the present application, a sliding device 500 can be used to connect the first and second slings 210 and 220. The sliding device 500 can be a slip ring that slides along the second sling 220, or a movable pulley that slides with the second sling 220. The movable pulley can be the pulley assembly 110 provided in the previous embodiment of the present application, but this application is not limited thereto. The movable pulley can also adopt other structures with similar functions. By allowing the end of the first sling 210 to slide along the second sling 220, if one of the aircraft 400 exhibits uncoordinated flight maneuvers, the sliding device 500 can slide along the second sling 220, allowing the aircraft 400 at both ends of the second sling 220 to spontaneously balance the forces, preventing one aircraft 400 from being overloaded. Therefore, in the fire extinguishing system of the embodiment of the present application, each aircraft 400 can easily maintain stable flight, and coordinated control is less difficult.
[0073] The fire extinguishing system provided by this application includes but is not limited to the above-mentioned embodiments. It can also omit some features, add some features, or combine the features of the first and second embodiments based on the first and second embodiments. For example, the anti-torsion arm 113 can be omitted based on the first and second embodiments, or the tension detector 125 can be omitted based on the second embodiment, or the tension detector 125 can be added based on the first embodiment, or the spray gun in the first embodiment can be replaced with the fire monitor head in the second embodiment, or the fire monitor head in the second embodiment can be replaced with the spray gun in the first embodiment. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of this application.
[0074] In summary, embodiments of the present application provide a fire extinguishing system. The fire extinguishing system includes a fire extinguishing agent supply device, a fire hose 300, a fire extinguishing device 100, a first sling 210, and at least two aircraft 400. The fire extinguishing device 100 includes a fire extinguishing assembly 120 and a pulley assembly 110 connected to the fire extinguishing assembly 120. The fire extinguishing assembly 120 includes an adapter 121 and an injection member 122. The adapter 121 has a cavity and an outlet 1212 and an inlet 1211 communicating with the cavity. The injection member 122 is detachably connected to the outlet 1212. One end of the fire hose 300 is connected to the inlet 1211, and the other end of the fire hose 300 is connected to the fire extinguishing agent supply device. The pulley assembly 110 is directly or indirectly connected to the adapter 121. The pulley assembly 110 includes a roller 112. The outer periphery of the roller 112 cooperates with the first suspension rope 210. The two ends of the first suspension rope 210 are directly or indirectly connected to different aircraft 400. The central axis of the inlet 1211, the central axis of the outlet 1212, and the rotation axis of the roller 112 are coplanar. In the fire extinguishing system provided in this application, a fire extinguishing device 100 can be jointly suspended by two or more aircraft 400. The multiple aircraft 400 have a higher overall load-bearing capacity, and the fire extinguishing device 100 and the fire hose 300 can be suspended to a higher position, which can better meet the fire extinguishing needs of high-rise buildings. Furthermore, because the pulley assembly 110 cooperates with the first suspension rope 210, the pulley assembly 110 and the fire extinguishing assembly 120 can slide along the first suspension rope 210. This evenly distributes the load borne by the multiple aircraft 400, reducing the uneven force applied to the multiple aircraft 400 due to the uncoordinated movements of a single aircraft 400, thereby improving the stability of the fire extinguishing system and significantly reducing the difficulty of coordinating and controlling the multiple aircraft 400. Furthermore, the central axis of the inlet 1211 of the adapter 121, the central axis of the outlet 1212, and the rotational axis of the roller 112 are coplanar, resulting in a better overall symmetry of the fire extinguishing device 100. When the fire extinguishing assembly 120 sprays extinguishing agent, the recoil force generated by the spray element 122 acts on the central axis of the inlet 1211, without generating a torque around the central axis of the inlet 1211. This helps prevent the fire extinguishing assembly 120 from twisting and makes the spray direction of the spray element 122 easier to control.
[0075] The above is only a specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in this application should be covered by the scope of protection of the present application.
Claims
1. A fire extinguishing system, characterized in that: It includes a fire extinguishing agent supply device, a fire hose, a fire extinguishing device, a first sling and at least two aircraft, the fire extinguishing device includes a fire extinguishing component and a pulley assembly connected to the fire extinguishing component, the fire extinguishing component includes an adapter and an injection component, the adapter has a cavity and an outlet and an inlet connected to the cavity, the injection component is detachably connected to the outlet, one end of the fire hose is connected to the inlet, and the other end of the fire hose is connected to the fire extinguishing agent supply device; the pulley assembly is directly or indirectly connected to the adapter, the pulley assembly includes a roller, the outer peripheral side of the roller cooperates with the first sling, the two ends of the first sling are directly or indirectly connected to different aircraft, the central axis of the inlet, the central axis of the outlet and the rotation axis of the roller are coplanar.
2. The fire extinguishing system according to claim 1, characterized in that: The central axis of the inlet extends along a preset direction, and the pulley assembly is directly or indirectly connected to an end of the adapter away from the inlet in the preset direction.
3. The fire extinguishing system according to claim 1, characterized in that: The pulley assembly further includes a pulley seat, the roller is rotatably connected to the pulley seat, the pulley seat is provided with a connecting structure, and the connecting structure of the pulley seat is directly or indirectly connected to the adapter; The fire extinguishing assembly further includes a tension detector, the two ends of which are respectively connected to the pulley seat and the adapter, and the tension detector is used to detect the tension load borne by the pulley assembly; The pulley assembly further includes an anti-torsion arm, one end of which is connected to the pulley seat, and the other end of which is in sliding engagement with the first suspension rope; The pulley assembly comprises at least two anti-torsion arms, and one end of the two anti-torsion arms away from the pulley seat is respectively slidably engaged with the first suspension ropes extending from both sides of the roller; A collar is provided at one end of the anti-torsion arm away from the pulley seat, and the first lifting rope passes through the collar; The anti-torsion arm is rotatably connected to the pulley seat, and the rotation axis of the anti-torsion arm is parallel to the rotation axis of the roller; The connection structure includes a stud or a screw hole.
4. The fire extinguishing system according to claim 1, characterized in that: The central axis of the inlet is perpendicular to the rotation axis of the roller.
5. The fire extinguishing system according to any one of claims 1 to 4, characterized in that: The adapter is provided with a connecting screw hole for direct or indirect connection with the pulley assembly, and the adapter is also provided with a locking screw hole, which passes through the outer surface of the adapter to the connecting screw hole. The fire extinguishing assembly also includes a locking screw, which cooperates with the locking screw hole and abuts against the stud that cooperates with the connecting screw hole.
6. The fire extinguishing system according to any one of claims 1 to 4, characterized in that: The angle between the orientation of the outlet and the orientation of the inlet is greater than or equal to 90°; The angle between the orientation of the outlet and the orientation of the inlet is 95° to 150°.
7. The fire extinguishing system according to any one of claims 1 to 4, characterized in that: The outlet is provided with a first joint, and the outlet is connected to the injection member through the first joint; A second joint is provided at the inlet, and the inlet is connected to the fire hose through the second joint; The first connector is welded or screwed to the adapter, and the first connector is clipped, plugged or screwed to the injection member; The second connector is welded or screwed to the adapter, and the second connector is clipped or plugged to the fire hose.
8. The fire extinguishing system according to any one of claims 1 to 4, characterized in that: The spraying member is a spray gun or a fire monitor head.
9. The fire extinguishing system according to any one of claims 1 to 4, characterized in that: The fire extinguishing system includes at least four of the aircraft, and also includes two second lifting ropes, wherein the two ends of the first lifting rope are respectively connected between the two ends of the two second lifting ropes, and the two ends of the second lifting rope are respectively directly or indirectly connected to different aircraft.
10. The fire extinguishing system according to claim 9, characterized in that: When the aircraft is in flight, the first suspension rope and the second suspension rope are coplanar.