Pulley assembly, suspended work device and flying suspended system

Abstract

This application discloses a pulley assembly, a hoisting device, and a flight hoisting system, relating to the field of flight hoisting technology. The pulley assembly includes a pulley seat, a roller, and an anti-torsion arm. The roller is rotatably connected to the pulley seat, and its outer periphery engages with a first hoisting rope. One end of the anti-torsion arm is connected to the pulley seat, and the other end engages with the first hoisting rope in a sliding manner. The pulley seat is provided with a connecting structure for connecting external objects. By incorporating the anti-torsion arm, the pulley assembly is less prone to torsion when suspending objects or working devices, thus maintaining tangency between the first hoisting rope and the roller of the pulley assembly. The roller can always rotate smoothly, and the first hoisting rope is less prone to wear or jamming, improving the reliability of the pulley assembly. Furthermore, when suspending a working component, it prevents the component from rotating arbitrarily, ensuring controllable orientation of the component and facilitating operation.

Description

Technical Field

[0001] This application relates to the field of flying hoisting technology, and more specifically, to a pulley assembly, a hoisting operation device, and a flying hoisting system. Background Technology

[0002] In existing technologies, when using aircraft to transport objects or lift work devices, the limited carrying capacity of the aircraft often restricts the transport volume or imposes significant limitations on the weight of the work device. Therefore, related technologies often use multiple aircraft to lift objects or work devices together. However, the uncontrolled rotation of the work device makes its orientation difficult to control, which is detrimental to the operation. Utility Model Content

[0003] The purpose of this application is to provide a pulley assembly, a hoisting device, and a flying hoisting system that can resist the torsion of the suspended object, thereby maintaining the reliability of the pulley assembly and facilitating operation.

[0004] The embodiments of this application can be implemented as follows: In a first aspect, this application provides a pulley assembly, including a pulley seat, a roller, and an anti-torsion arm. The roller is rotatably connected to the pulley seat, and the outer periphery of the roller is used to cooperate with a first lifting rope. One end of the anti-torsion arm is connected to the pulley seat, and the other end of the anti-torsion arm is used to slide with the first lifting rope. The pulley seat is provided with a connecting structure for connecting external objects.

[0005] In an optional embodiment, the pulley assembly includes at least two anti-torsion arms, the ends of which are away from the pulley seat and are respectively used to slide with first suspension ropes extending from both sides of the roller.

[0006] In an optional embodiment, a collar is provided at the end of the anti-torsion arm away from the pulley seat, the collar being used for the first hoisting rope to pass through.

[0007] 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.

[0008] In an optional embodiment, the pulley seat forms a pulley groove, at least a portion of the roller is accommodated in the pulley groove, and the pulley assembly further includes a rotating shaft passing through the pulley groove, with the roller rotatably engaged with the rotating shaft.

[0009] In an optional embodiment, the pulley seat includes two end plates and a base plate. The two end plates are spaced apart axially from the roller. A shaft is connected to the two end plates. The edge of the base plate is connected to the edge of the two end plates. The base plate is curved in an arc shape around the rotation axis of the roller.

[0010] In an optional embodiment, the outer periphery of the roller is provided with a limiting groove for cooperating with the first lifting rope.

[0011] In optional embodiments, the connection structure includes a stud, a threaded hole, or a hook.

[0012] Secondly, this application provides a hoisting operation device, including an operation component and a pulley assembly of any of the foregoing embodiments, wherein the operation component is connected to the pulley seat of the pulley assembly via a connection structure.

[0013] In an optional implementation, the operating component is a fire extinguishing component, which is used to spray fire extinguishing agent.

[0014] In an optional implementation, the working component includes a tension gauge, which is connected to the pulley seat of the pulley assembly. The tension gauge is used to detect the tensile load borne by the pulley assembly.

[0015] Thirdly, this application provides a flight sling system, including a pulley assembly of any of the embodiments of the first aspect above, for connecting a suspended object through a pulley seat of the pulley assembly; or, including a slinging operation device of any of the embodiments of the second aspect above. The flight sling system also includes a first sling and at least two aircraft. The first sling engages with rollers of a pulley assembly, and the two ends of the first sling are directly or indirectly connected to different aircraft.

[0016] In an optional implementation, the flight sling system includes at least four aircraft and two second slings. The two ends of the first sling are connected between the two ends of the two second slings, and the two ends of the second slings are directly or indirectly connected to different aircraft.

[0017] In an optional implementation, when the aircraft is in flight, the first and second slings are coplanar.

[0018] The beneficial effects of the pulley assembly, hoisting device, and flying hoisting system provided in this application include: The pulley assembly provided in this application includes a pulley seat, a roller, and an anti-torsion arm. The roller is rotatably connected to the pulley seat, and its outer periphery is used to engage with a first suspension rope. One end of the anti-torsion arm is connected to the pulley seat, and the other end is used to slide with the first suspension rope. The pulley seat is provided with a connecting structure for connecting external objects. During use, when the pulley assembly and the suspended object tend to twist together, the anti-torsion arm, being connected to the pulley seat, also tends to rotate. Since one end of the anti-torsion arm is connected to the first suspension rope, when the pulley assembly and the suspended object twist together, the upper end of the anti-torsion arm abuts against the taut first suspension rope. The reaction force exerted by the taut first suspension rope on the anti-torsion arm resists the rotation of the anti-torsion arm, that is, resists the rotation of the entire pulley assembly. Because the end of the anti-torsion arm slides with the first suspension rope, it does not affect the movement of the first suspension rope along the tangential direction of the roller, and does not affect the realization of the pulley function. The pulley assembly provided in this application is less prone to twisting when suspending objects or working devices, thus maintaining tangency between the first lifting rope and the roller of the pulley assembly. This ensures smooth rotation of the roller and reduces wear or jamming of the first lifting rope, improving the reliability of the pulley assembly. Furthermore, when suspending working components, it prevents uncontrolled rotation of the components, ensuring controllable orientation and facilitating operation.

[0019] The hoisting operation device provided in this application includes the operation component and the aforementioned pulley assembly, thus having the advantages of high reliability and easy operation control.

[0020] The flight sling system provided in this application includes the aforementioned pulley assembly for connecting the suspended object via the pulley seat of the pulley assembly; or, it includes the aforementioned slinging operation device. The flight sling system also includes a first sling and at least two aircraft. The first sling cooperates with the rollers of the pulley assembly, and both ends of the first sling are directly or indirectly connected to different aircraft. This flight sling system has good reliability, is easy to coordinate and control, and is convenient to operate. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the cooperation between the first suspension rope and the pulley assembly in one embodiment of this application; Figure 2 This is a cross-sectional view of the first suspension rope and pulley assembly in one embodiment of this application; Figure 3This is a schematic diagram of the hoisting operation device in the first embodiment of this application; Figure 4 This is a cross-sectional view of the hoisting operation device in the first embodiment of this application; Figure 5 This is a schematic diagram of an adapter in one embodiment of this application; Figure 6 This is a schematic diagram of the first connector in the first embodiment of this application; Figure 7 This is a schematic diagram of the spraying component in the first embodiment of this application; Figure 8 This is a schematic diagram of the hoisting operation device in the second embodiment of this application; Figure 9 This is a cross-sectional view of the hoisting operation device in the second embodiment of this application; Figure 10 This is a schematic diagram showing the flight sling system arranged in a straight line in one embodiment of this application; Figure 11 This is a schematic diagram showing the flight suspension system arranged in a quadrilateral shape in one embodiment of this application.

[0023] Icons: 100-Suspension 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-Collar ring; 114-Shaft; 1141-Busset; 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 - Spraying component; 1221 - Second locking groove; 1222 - Second flange; 1223 - Second snap-fit ​​part; 1224 - Second slot; 123 - First connector; 1231 - First locking groove; 1232 - First flange; 1233 - First snap-fit ​​part; 1234 - First slot; 124 - Second connector; 125 - Tensile test gauge; 210 - First hoisting rope; 220 - Second hoisting rope; 300 - Fire hose; 400 - Aircraft; 500 - Sliding device. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0029] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0030] When using multiple aircraft to suspend objects or work devices, it is sometimes difficult to maintain a high degree of consistency in the flight movements of each aircraft, resulting in uneven force distribution. Therefore, related technologies use pulleys to suspend objects and balance the force on both ends of the suspension rope. However, when using pulley assemblies to suspend objects, the suspended object tends to rotate around its axis of gravity, simultaneously causing the pulley assembly to rotate. In this situation, the suspension rope deviates from the tangent of the pulley, increasing pulley resistance and causing the rope to wear easily; in severe cases, it may even lead to jamming or the rope detaching from the pulley. When a work component is suspended by a pulley assembly, the rotation of the work component makes its orientation difficult to control, hindering the operation. For example, when a fire extinguishing component is suspended below a pulley assembly, the rotation of both the pulley assembly and the fire extinguishing component makes it difficult to align the fire extinguishing component with the fire, resulting in inaccurate spraying of the extinguishing agent and affecting fire extinguishing efficiency and effectiveness.

[0031] To address the shortcomings of the aforementioned related technologies, embodiments of this application provide a pulley assembly that, by incorporating an anti-torsion arm, resists the torsion of the pulley assembly, thereby improving reliability and facilitating operation. Additionally, embodiments of this application also provide a hoisting operation device and a flying hoisting system.

[0032] Figure 1 This is a schematic diagram of the cooperation between the first suspension rope 210 and the pulley assembly 110 in one embodiment of this application; Figure 2 This is a cross-sectional view of the first suspension rope 210 and pulley assembly 110 in one embodiment of this application. Figure 1 and Figure 2 As shown, the pulley assembly 110 provided in this embodiment includes a pulley seat 111, a roller 112, and an anti-torsion arm 113. The roller 112 is rotatably connected to the pulley seat 111, and its outer periphery is used to engage with the first suspension rope 210. One end of the anti-torsion arm 113 is connected to the pulley seat 111, and the other end of the anti-torsion arm 113 is used to slide with the first suspension rope 210. The pulley seat 111 is provided with a connecting structure 1113 for connecting external objects. In this embodiment, when the suspended object 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 will resist the rotation of the anti-torsion arm 113, that is, resist the rotation of the pulley assembly 110 as a whole. Since the end of the anti-torsion arm 113 is in sliding engagement with the first suspension rope 210, it will not affect the movement of the first suspension rope 210 along the tangential direction of the roller 112, and will not affect the realization of the pulley function.

[0033] It is understood that the torque on the first suspension rope 210 wound around the roller 112 is related to the displacement of the point of application of the force from the rotation axis and the magnitude of the force. When the magnitude of the force is the same, the greater the displacement, the greater the torque. In this application, the rotation axis is the vertical axis of the connecting structure 1113 passing through the pulley seat 111. Without the anti-torsion arm 113, the distance L1 from the point of application of the force 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 added, the first suspension rope 210 corresponding to the anti-torsion arm 113 is taut, and its connection with the roller 112 can be approximated as rigid. At this time, the point of application of the force from the pulley assembly 110 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 application to the rotation axis is equal to the distance from the contact point between the first suspension rope 210 and the end of the anti-torsion arm 113 away from the pulley seat 111 to the rotation axis. Obviously, L2 is greater than L1. Therefore, after using the anti-torsion arm 113, the first suspension rope 210 can resist a larger torque and is less susceptible to torsion due to external forces.

[0034] In this embodiment, the pulley assembly 110 includes at least two anti-torsion arms 113, the ends of which are away from the pulley seat 111 and are respectively used for sliding engagement 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 on the same side in the axial direction of the roller 112; in other optional embodiments, the two anti-torsion arms 113 may also be connected to opposite sides of the pulley seat 111; in other optional embodiments, the pulley assembly 110 may also include only one anti-torsion arm 113, or include three or more anti-torsion arms 113.

[0035] In this embodiment, a collar 1131 is provided at the end of the anti-torsion arm 113 away from the pulley seat 111. The collar 1131 is used for the first lifting rope 210 to pass through, that is, the first lifting rope 210 passes through the collar 1131. Figure 1 and Figure 2 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 about the vertical axis, the collar 1131 will abut against the taut first suspension rope 210, thereby restricting the twisting of the pulley assembly 110.

[0036] Optionally, the anti-torsion arm 113 is rotatably connected to the pulley seat 111, and the rotation axis of the anti-torsion arm 113 is parallel to the rotation axis of the roller 112. This arrangement ensures that when the angle between the first suspension ropes 210 on both sides of the roller 112 changes, the anti-torsion arm 113 rotates synchronously with the rotation of the first suspension ropes 210, thus avoiding excessive interference with the first suspension ropes 210. Optionally, the pulley seat 111 is provided with a mounting post 116, on which a first bearing can be fitted. The end of the anti-torsion arm 113 is fitted onto the outer ring of the first bearing. The end of the mounting post 116 away from the pulley seat 111 can be screwed to a nut, thereby limiting the movement of the first bearing and the end of the anti-torsion arm 113. A washer 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, with its end screwed to the nut. The first bearing is fitted onto the smooth cylindrical surface of the semi-threaded screw. Optionally, the semi-threaded screw includes, but is not limited to, countersunk screws, and the type of the first bearing includes, but is not limited to, deep groove ball bearings, needle roller bearings, and roller bearings; in other embodiments, the first bearing may be omitted, and the end of the anti-torsion arm 113 may be directly sleeved on the mounting post 116.

[0037] Optionally, the pulley seat 111 forms a pulley groove, at least a portion of the roller 112 is accommodated within the pulley groove, and the pulley assembly 110 further includes a rotating shaft 114 passing through the pulley groove, with the roller 112 rotatably engaged with the rotating shaft 114. By providing the pulley groove, the roller 112 can be protected, 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.

[0038] Furthermore, the pulley seat 111 includes two end plates 1111 and a base plate 1112. The two end plates 1111 are spaced apart axially from the roller 112. A rotating shaft 114 is connected to the two end plates 1111. The edge of the base plate 1112 connects to the edges of the two end plates 1111. The base plate 1112 is curved in an arc shape around the rotation axis of the roller 112. The two end plates 1111 and the base plate 1112 together form a pulley groove. The base plate 1112 is arc-shaped and adapts to the shape of the roller 112, which can minimize the volume of the pulley seat 111 and improve the compactness of the pulley assembly 110.

[0039] Furthermore, to reduce the frictional resistance between the roller 112 and the rotating shaft 114 and improve the smoothness of the roller 112's rotation, in this embodiment, a second bearing 1142 is fitted over the rotating shaft 114, and the roller 112 is fitted over the outer side 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 bolts, which pass through the two end plates 1111 and engage with a locking nut 115. A bushing 1141 is provided between the end plate 1111 near the locking nut 115 and the rotating shaft 114. The bushing 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 bushing 1141 can also abut against the inner ring of the second bearing 1142, thereby axially limiting the second bearing 1142. The bushing 1141 has a flange at one end near the locking nut 115. This flange protrudes radially from the bushing 1141 and abuts against 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 bushing 1141 abuts against the outer surface of the end plate 1111, the stepped surfaces of the bushing 1141 and the rotating shaft 114 clamp the second bearing 1142, placing the second bearing 1142 in the middle of the pulley groove, thus ensuring that the roller 112 is also in the middle of the pulley groove.

[0040] In this embodiment, a limiting groove 1121 for cooperating with the first lifting rope 210 is provided on the outer periphery of the roller 112. When the first lifting rope 210 cooperates with the roller 112, the first lifting rope 210 is embedded in the limiting groove 1121. The limiting groove 1121 can reduce the risk of the first lifting rope 210 falling off the roller 112, thereby improving the reliability of the pulley assembly 110.

[0041] Optionally, the connection structure 1113 may include a stud, a screw hole, or a hook, but this application is not limited thereto. The connection structure 1113 may also be a structure that can realize other connection methods, including but not limited to snap-fit ​​or plug-in connection structures.

[0042] exist Figure 1 and Figure 2 In the illustrated embodiment, the connecting structure 1113 is a stud, which can be connected to the connecting screw hole on the working component to lift the working component for related operations. In other embodiments, the connecting structure 1113 can also be a screw hole, which engages with the stud on the working component. Additionally, the pulley assembly 110 can also be used to lift ordinary goods, rather than working components; therefore, the connecting structure 1113 can be a hook, which facilitates loading and unloading of goods. Optionally, when the pulley assembly 110 is used to lift ordinary goods, the hook can be equipped with a release device to form an automatic unhooking device, which enables automatic loading and unhooking of goods.

[0043] Figure 3 This is a schematic diagram of the hoisting operation device 100 in the first embodiment of this application; Figure 4 This is a cross-sectional view of the hoisting operation device 100 in the first embodiment of this application. Figure 3 and Figure 4 As shown, the hoisting operation device 100 provided in this embodiment includes an operation component and a pulley assembly 110 as described in the above embodiment. The operation component is connected to the pulley seat 111 of the pulley assembly 110 via a connection structure 1113. The pulley assembly 110 is used to cooperate with the first hoisting rope 210, allowing the operation component to slide along the first hoisting rope 210. Because the pulley assembly 110 is equipped with an anti-torsion arm 113, the hoisted operation component is less likely to rotate along the vertical axis, thus facilitating control of the operation component's orientation. Furthermore, since the spraying component 122 extends forward, it tends to rotate downwards under its own weight, creating a risk of "head-down." Also, because the operation component generates recoil during spraying, the spraying component 122 of the hoisting operation device 100 tends to "head-down." However, thanks to the long lever arm provided by the anti-torsion arm 113, the head-down of the spraying component 122 can be effectively prevented, maintaining the stability of the spraying direction of the spraying component 122.

[0044] In this embodiment, the operating component is a fire extinguishing component 120, which is used to spray extinguishing agents, including but not limited to water, dry powder extinguishing agents, and foam extinguishing agents. The aircraft 400 is connected to a pulley assembly 110 via a first hoisting rope 210, and can use the pulley assembly 110 to hoist the fire extinguishing component 120 and the fire hose 300 to a location near the fire in the high-rise building, and then spray the extinguishing agent onto the fire to extinguish it. In this application, the 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 extinguishing agent being transported. The fire hose 300 can also be replaced with other transport pipes that have the function of transporting extinguishing agents and are suitable for hoisting.

[0045] In other alternative embodiments, the operation component may also be a component for implementing other functions, such as a component for implementing functions such as pest control and irrigation.

[0046] Figure 5 This is a schematic diagram of the adapter 121 in one embodiment of this application. (In conjunction with...) Figures 3 to 5 In this embodiment, the fire extinguishing assembly 120 includes a converter 121 and a sprayer 122. The converter 121 has a cavity and an outlet 1212 and an inlet 1211 communicating with the cavity. The sprayer 122 is detachably connected to the outlet 1212, and the inlet 1211 is used to connect to a fire hose 300. The fire hose 300 can supply extinguishing agent from the extinguishing agent supply device through the inlet 1211 of the converter 121 into the cavity of the converter 121. The extinguishing agent enters the sprayer 122 from the outlet 1212 and can be sprayed out by the sprayer 122 to the fire scene, thereby achieving the purpose of fire extinguishing. The detachable connection of the sprayer 122 to the outlet 1212 makes the sprayer 122 easy to install and remove, and allows for type replacement as needed.

[0047] In this embodiment, the central axis of the inlet 1211 of the adapter 121 extends along a preset direction, and the pulley assembly 110 is directly connected to the end of the adapter 121 that is away from the inlet 1211 in the preset direction. Figure 3 and Figure 4In this embodiment, the preset direction is the up-down direction, which is the vertical direction in actual use. Specifically, the pulley assembly 110 is directly connected to the adapter 121. The connecting structure 1113 of the pulley seat 111 of the pulley assembly 110 is directly connected to the adapter 121. A connecting screw hole is provided at one end of the adapter 121 that connects to the pulley assembly 110 (specifically, the pulley seat 111 of the pulley assembly 110). 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 center line 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 central axis of the entrance 1211 of the adapter 121. Since the inlet 1211 and the connecting screw hole of the adapter 121 are the two points of force exerted by the tension on the adapter 121, when the fire extinguishing assembly 120 is lifted, the inlet 1211 and the connecting screw hole of the adapter 121 will be directly opposite 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 tension load. The stud is only subjected to tension in its axial direction and will not be subjected to radial force, which can ensure the reliability of the stud.

[0048] In an optional embodiment, the end of the adapter 121 connected to the pulley assembly 110 is provided with a boss, and a connecting screw hole matching the connecting structure 1113 (stud) is provided on the boss. The cross-sectional shape of the boss includes, but is not limited to, a circle, an ellipse or a polygon.

[0049] In this embodiment, the central axis of the inlet 1211, the central axis of the outlet 1212, and the rotation axis of the roller 112 of the adapter 121 are coplanar. This makes the overall symmetry of the hanging operation device 100 better. When the fire extinguishing assembly 120 sprays the fire extinguishing agent, the recoil force generated by the spray element 122 can act on the central axis of the inlet 1211, and will not generate a torque around the central axis of the inlet 1211. This helps to prevent the fire extinguishing assembly 120 from twisting and makes the spray direction of the spray element 122 easier to control. Furthermore, the central axis of inlet 1211, the central axis of outlet 1212, and the rotation axis of roller 112 are all coplanar, and the central axis of inlet 1211 is perpendicular to the rotation axis of roller 112 of pulley assembly 110. In this case, the plane containing the central axis of inlet 1211 and the central axis of outlet 1212 is perpendicular to the plane containing roller 112. Since roller 112 is coplanar with the first suspension rope 210, the plane containing the central axis of inlet 1211 and the central axis of outlet 1212 is perpendicular to the plane containing roller 112 and the first suspension rope 210. This allows the recoil force to act on the central axis of inlet 1211 and to be evenly distributed to the first suspension ropes 210 on both sides of pulley assembly 110. This effectively prevents the fire extinguishing assembly 120 from twisting, facilitates control of the spray direction of spray component 122, and makes the force on multiple aircraft 400 more even, thus improving the stability of the system.

[0050] Because the adapter 121 has a connecting screw hole for direct or indirect connection with the pulley assembly 110, and the pulley seat 111 and the adapter 121 are threaded together, there is an uncertainty in the rotation angle after tightening. Moreover, relative rotation may occur during use, resulting in the plane containing the central axis of the inlet 1211 and the central axis of the outlet 1212 not being perpendicular to the plane containing the roller 112, making it difficult to control the orientation of the spray element 122. To address this, 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 engages with the locking screw hole 1213 and abuts against a stud (such as the connecting structure 1113 on the pulley seat 111) that engages with the connecting screw hole. Optionally, a locking screw hole 1213 is provided on the side wall of the boss of the adapter 121, and extends through the side wall of the boss into the connecting screw hole for engaging with the connecting structure 1113 (stud) of the pulley seat 111. By engaging the locking screw 1214 with the locking screw hole 1213, the locking screw 1214 abuts against the stud (i.e., the connecting structure 1113) in the connecting screw hole, limiting the stud's position and preventing it from rotating relative to the connecting screw hole. This controls the orientation of the spraying element 122 relative to the pulley assembly 110, achieving the purpose of controlling the spraying direction of the spraying element 122.

[0051] Furthermore, the angle A between the orientation of outlet 1212 and the orientation of inlet 1211 is greater than 90°. It is understood that after the spray element 122 is installed on outlet 1212, the central axis of spray element 122 coincides with the central axis of outlet 1212, and the orientation of spray element 122 is consistent with the orientation of outlet 1212. By setting the angle A to be greater than 90°, the spray element 122 is tilted upwards during use, achieving an upward-angle spray. Since the sprayed extinguishing agent (such as water) follows a parabolic trajectory, a certain upward angle is beneficial for the extinguishing agent to spray further, covering a greater horizontal distance, and is also beneficial for extinguishing fires at higher locations. Optionally, the angle A between the orientation of outlet 1212 and the orientation of inlet 1211 is 95°~150°; further, the angle A between the orientation of outlet 1212 and the orientation of inlet 1211 is 105°~135°. If the included angle A is too large, the elevation angle of the spray nozzle 122 will be too large, resulting in water flow dispersion, weakened impact force, increased recoil force, and reduced fire extinguishing efficiency. Conversely, if the included angle A is too small, the elevation angle of the spray nozzle 122 will be too small, resulting in a narrow coverage area, making it difficult to reach higher or farther targets and cover large fire areas. In this application, the size of the included angle A can be adjusted appropriately according to actual needs. Optionally, the spray nozzle 122 can be a rotating body, with the central axis of the spray nozzle 122 being the axis of this rotating body.

[0052] In other optional embodiments, depending on 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 spray element 122 is tilted downward in the working state).

[0053] Optionally, the spraying element 122 is a spray gun or a fire monitor. In this embodiment, the spraying element 122 is a spray gun, which has a gradually narrowing inner cavity, which is conducive to concentrating the extinguishing agent and shooting it out at a high speed, resulting in a longer range.

[0054] In this embodiment, the adapter 121 has a first connector 123 at its outlet 1212, through which it connects to the spray nozzle 122; and a second connector 124 at its inlet 1211, through which it connects to the fire hose 300. By providing the first connector 123 and the second connector 124, the adapter 121 can be matched with the connectors of the spray nozzle 122 and the fire hose 300, enabling quick loading and unloading.

[0055] Optionally, the first connector 123 is welded or screwed to the adapter 121, and the first connector 123 is snapped, plugged in or screwed to the spraying component 122; the second connector 124 is welded or screwed to the adapter 121, and the second connector 124 can be snapped or plugged into the fire hose 300 (specifically, the quick connector on the fire hose 300).

[0056] Figure 6 This is a schematic diagram of the first connector 123 in the first embodiment of this application; Figure 7 This is a schematic diagram of the spraying member 122 in the first embodiment of this application. Figure 6 and Figure 7 As shown, in this embodiment, the first connector 123 is a snap-fit ​​connector, and the first connector 123 is provided with an external thread, which mates with the internal thread at the outlet 1212; the first connector 123 snaps into the spray element 122.

[0057] 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, and the first flange 1232 is located on the outer wall of the first locking groove 1231 and protrudes inward. The first connector 123 is also provided with a first latching part 1233, which forms a first latching groove 1234 with its opening radially outward. In this embodiment, there are two first locking grooves 1231, two first flanges 1232, and two first latching parts 1233; optionally, the two first locking grooves 1231, the two first flanges 1232, and the two first latching parts 1233 are all rotationally symmetrically arranged along the central axis of the first connector 123. Correspondingly, the spraying component 122 is provided with a second locking groove 1221, which extends around the central axis of the spraying component 122. A second flange 1222 is provided at the opening of the second locking groove 1221, and the second flange 1222 is located on the outer side wall of the second locking groove 1221 and protrudes inward. The second connector 124 is also provided with a second latching part 1223, which forms a radially outward second latching groove 1224. In this embodiment, there are two second locking grooves 1221, two second flanges 1222, and two second latching parts 1223; optionally, the two second locking grooves 1221, the two second flanges 1222, and the two second latching parts 1223 are all rotationally symmetrically arranged along the central axis of the spraying component 122.

[0058] When the first connector 123 engages with the spraying component 122, the first latching part 1233 and the second latching part 1223 can be inserted into the second locking groove 1221 and the first locking groove 1231, respectively. Then, the spraying component 122 rotates 90° around its own axis. At this time, the first flange 1232 can be inserted into the second slot 1224 of the second latching part 1223, and the second flange 1222 can be inserted into the first slot 1234 of the first latching part 1233. This prevents the spraying component 122 from axially separating from the first connector 123.

[0059] Similarly, when the second connector 124 is a clip-on connector, the specific structure of the second connector 124 can be referred to the first connector 123, and the connection method between the second connector 124 and the fire hose 300 can be referred to the connection method between the first connector 123 and the spray element 122, which will not be described in detail here.

[0060] Figure 8 This is a schematic diagram of the hoisting operation device 100 in the second embodiment of this application; Figure 9 This is a cross-sectional view of the hoisting operation device 100 in the second embodiment of this application. Figure 8 and Figure 9 As shown, compared to Figure 3 , Figure 4 In the embodiment shown, the operating component of the hoisting device 100 in the second embodiment of this application further includes a tension gauge 125. The two ends of the tension gauge 125 are respectively connected to the pulley assembly 110 and the adapter 121. The tension gauge 125 is used to detect the tensile load borne by the pulley assembly 110. The tension gauge 125 can detect the load of the pulley assembly 110 in real time, so as to adjust the operating state of the hoisting device 100 in a timely manner. Taking the fire extinguishing component 120 as an example, and the fire extinguishing component 120 being connected to the fire hose 300, the higher the hoisting height, the longer the hoisted fire hose 300, the greater the tensile load between the fire extinguishing component 120 and the pulley assembly 110, and the greater the load on the aircraft 400; furthermore, the greater the flow rate of the fire extinguishing component 120, the stronger the recoil, which also leads to an increase in the load on the aircraft 400. By monitoring the tension load borne by the pulley assembly 110 in real time, the flight altitude and jet flow of the aircraft 400 can be adjusted accordingly, preventing overloading of the aircraft 400 due to excessive hoisting height or excessive jet flow. This improves the safety of the hoisting device 100 and the flight hoisting system. The tension gauge 125 can communicate wirelessly with the aircraft 400 and / or the ground control center.

[0061] In this embodiment, when the operating component is the fire extinguishing component 120, the pulley assembly 110 is indirectly connected to the adapter 121 of the fire extinguishing component 120 via the tension gauge 125. The pulley assembly 110 is indirectly connected to the end of the adapter 121 away from the inlet 1211 in a preset direction. Specifically, the connecting 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 parts at each end, and the two connecting parts are respectively connected to the adapter 121 and the connecting structure 1113 of the pulley seat 111. Specifically, in this embodiment, both connecting parts are studs, the connecting structure 1113 on the pulley seat 111 is a screw hole, and the adapter 121 is also provided with a connecting screw hole connected to the connecting part. Optionally, the center line of the connecting screw hole on the adapter 121 connected to the connecting part 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 exerted by the tension on the adapter 121, when the fire extinguishing assembly 120 is lifted, the inlet 1211 and the connecting screw hole of the adapter 121 will be directly opposite 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 connection part of the tension gauge 125 can all extend in the vertical direction, consistent with the direction of the tension load. The connection part of the tension gauge 125 is only subjected to tension in its axial direction and will not be subjected to radial force, which can ensure the reliability of the connection part of the tension gauge 125.

[0062] In an optional embodiment, the structure of the adapter 121 may be similar to that of the first embodiment. A boss is provided at one end of the adapter 121 that is connected to the tensile tester 125. A connecting screw hole that connects to the connecting part (stud) of the tensile tester 125 on the adapter 121 is provided on the boss. The cross-sectional shape of the boss includes, but is not limited to, a circle, an ellipse or a polygon.

[0063] In order to ensure that the spray element 122 of the fire extinguishing assembly 120 has a certain orientation, in an optional embodiment of this 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 extends through the end plate 1111 of the pulley seat 111 into the screw hole for connecting with the connection part (stud) of the tension gauge 125. In other optional embodiments of this 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 embodiments. The locking screw holes 1213 are provided on the adapter 121 in such a manner that they are located on the side wall of the adapter 121 (optionally on the side wall of the boss of the adapter 121), and extend from the side wall of the adapter 121 (optionally on the side wall of the boss of the adapter 121) into the connecting screw hole for connection with the connecting part (stud) of the tension gauge 125. The locking screw holes 1213 at these two locations can respectively restrict the relative rotation of the threaded connection by locking screws 1214 (see reference). Figure 9 During assembly, first tighten the pulley seat 111 and the tension gauge 125, then screw the tension gauge 125 and the adapter 121 until the central axis of the spraying component 122 is coplanar with the rotation axis of the roller 112. Then, screw in the locking screw holes 1213 on both the pulley seat 111 and the adapter 121 to restrict relative rotation at the threaded connection. Alternatively, first tighten the adapter 121 and the tension gauge 125, then screw the tension gauge 125 and the pulley seat 111 until the central axis of the spraying component 122 is coplanar with the rotation axis of the roller 112. Then, screw in the locking screw holes 1213 on both the pulley seat 111 and the adapter 121 to restrict relative rotation at the threaded connection.

[0064] In other optional embodiments of this application, the adapter 121 is provided with two locking screw holes 1213 and / or the pulley seat 111 is provided with two locking screw holes 1213 (optionally, the two locking screw holes 1213 are respectively provided on the two end plates 1111 of the pulley seat 111), but this application is not limited thereto, and the number of locking screw holes 1213 provided on the adapter 121 and the pulley seat 111 can be adjusted according to actual needs.

[0065] In an optional embodiment, the spray element 122 is a fire monitor head; compared with a spray gun, the fire monitor head has a larger flow rate and better timeliness for extinguishing fires in high-rise buildings.

[0066] In this embodiment, the first connector 123 has external threads at both ends, which mate with the internal threads of the spray component 122 and the adapter 121, respectively. Optionally, the second connector 124 is a quick-connect connector. One end of the second connector 124 has an external thread, which mates with the internal thread of the inlet 1211, and the other end mates with the quick-connect fitting on the fire hose 300. When the quick-connect connector is inserted into the quick-connect fitting of the fire hose 300, the two are locked together, preventing axial detachment. The quick-connect connector can be a standard fire-fighting component, and its specific structure and principle can be found in existing technology, which will not be elaborated here. It is understood that the types of the first connector 123 and the second connector 124 can be adjusted as needed, including but not limited to clip-on connectors and quick-connect connectors.

[0067] Figure 10 This is a schematic diagram showing the flight sling system arranged in a straight line in one embodiment of this application; Figure 11 This is a schematic diagram showing the flight sling system arranged in a quadrilateral shape in one embodiment of this application. Figure 10 and Figure 11 As shown in the figure, this application embodiment also provides a flying hoisting system, which includes the above-mentioned hoisting operation device 100, a first hoisting rope 210, and at least two aircraft 400. The first hoisting rope 210 cooperates with the rollers 112 of the pulley assembly 110, and the two ends of the first hoisting rope 210 are directly or indirectly connected to different aircraft 400. In this embodiment, the flying hoisting system is a fire extinguishing system, and the operating component of the hoisting operation device 100 is a fire extinguishing component 120. Further, the flying hoisting system also includes a fire hose 300 and a fire extinguishing agent supply device (not shown in the figure). One end of the fire hose 300 is connected to the inlet 1211 on the adapter 121 of the fire extinguishing component 120, and the other end of the fire hose 300 is connected to the fire extinguishing agent supply device. The fire extinguishing agent supply device can transport the fire extinguishing agent through the fire hose 300 to the adapter 121, and then spray it out to the fire scene by the sprayer 122. 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.

[0068] In this embodiment, the flying hoisting system includes four aircraft 400 and two second hoisting ropes 220. The two ends of a first hoisting rope 210 are respectively connected between the two ends of the two second hoisting ropes 220, and the two ends of the second hoisting ropes 220 are respectively connected to different aircraft 400. By using more aircraft 400 to construct the flying hoisting system, the load capacity of the system can be increased, allowing for the hoisting of heavier hoisting devices 100. When the hoisting device 100 is connected to a fire hose 300, both devices can be hoisted higher, better meeting the needs of high-rise firefighting. It should be understood that the flying hoisting system can also include more aircraft 400, and correspondingly, more hoisting ropes. For example, the two ends of each second hoisting rope 220 can be connected to a third hoisting rope, indirectly connecting more aircraft 400 through the third hoisting ropes.

[0069] Taking a flight sling system comprising four aircraft 400 as an example, optionally, when the aircraft 400 is in flight, the first sling 210 and the second sling 220 are coplanar, that is, the aircraft 400 are arranged in a straight line, such as... Figure 10 As shown. In this case, the fire extinguishing component 120 can be positioned as close to the fire scene as possible without interference from buildings, resulting in better fire extinguishing effect. In other embodiments, the layout of the aircraft 400 can also be adjusted as needed, for example, according to... Figure 11 The quadrilateral arrangement shown.

[0070] In this embodiment, a sliding device 500 can be used to connect the first suspension rope 210 and the second suspension rope 220. The sliding device 500 can be a slip ring that slides along the second suspension rope 220, or a movable pulley that slides with the second suspension rope 220. The movable pulley can be the pulley assembly 110 provided in the previous embodiment of this application, but this application is not limited to this, and the movable pulley can also adopt other structures with similar functions. By allowing the end of the first suspension rope 210 to slide along the second suspension rope 220, when one of the aircraft 400 exhibits uncoordinated flight movements, the sliding device 500 can slide along the second suspension rope 220, allowing the aircraft 400 at both ends of the second suspension rope 220 to spontaneously balance the force, avoiding excessive load on one of the aircraft 400. Therefore, in the flight sling system of this embodiment, each aircraft 400 can easily maintain stable flight, and the coordination control is relatively simple.

[0071] In alternative embodiments, the flying sling system can be used for cargo transportation. Specifically, the flying sling system includes the pulley assembly 110 described in the above embodiments to connect the suspended object via the pulley seat 111 of the pulley assembly 110. In this embodiment, the pulley assembly 110 may not be connected to the working component, but rather to the suspended object, thus enabling the slinging and transportation of cargo.

[0072] The pulley assembly 110, the hoisting device 100, and the flying hoisting system provided in this application include, but are not limited to, the embodiments described above. The hoisting device 100 and the flying hoisting system may omit some features, add some features, or combine features from the first and second embodiments. For example, the anti-torsion arm 113 may be omitted from the first and second embodiments, or the tension gauge 125 may be omitted from the second embodiment, or the tension gauge 125 may be added to the first embodiment, or the spray gun in the first embodiment may be replaced with the fire monitor head in the second embodiment, or the fire monitor head in the second embodiment may be replaced with the spray gun in the first embodiment. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0073] In summary, this application provides a pulley assembly 110, a hoisting device 100, and a flight hoisting system. The pulley assembly 110 includes a pulley seat 111, a roller 112, and an anti-torsion arm 113. The roller 112 is rotatably connected to the pulley seat 111, and its outer periphery engages with a first hoisting rope 210. One end of the anti-torsion arm 113 is connected to the pulley seat 111, and the other end is slidably engaged with the first hoisting rope 210. The pulley seat 111 is provided with a connecting structure 1113 for connecting external objects. During use, when the pulley assembly 110 and the suspended object tend to twist together, the anti-torsion arm 113, being connected to the pulley seat 111, also tends to rotate. Since one end of the anti-torsion arm 113 is connected to the first lifting rope 210, when the pulley assembly 110 and the suspended object twist together, the upper end of the anti-torsion arm 113 will abut against the taut first lifting rope 210. The reaction force exerted by the taut first lifting rope 210 on the anti-torsion arm 113 will resist the rotation of the anti-torsion arm 113, that is, resist the rotation of the pulley assembly 110 as a whole. Since the end of the anti-torsion arm 113 is in sliding engagement with the first lifting rope 210, it will not affect the movement of the first lifting rope 210 along the tangential direction of the roller 112, and will not affect the realization of the pulley function. The pulley assembly 110 provided in this application is not prone to twisting when suspending suspended objects or working devices, thus maintaining the tangential relationship between the first lifting rope 210 and the roller 112 of the pulley assembly 110. The roller 112 can always rotate smoothly, and the first lifting rope 210 is not prone to wear or jamming, improving the reliability of the pulley assembly 110. Furthermore, when suspending the working components, it can prevent the components from rotating arbitrarily, thus ensuring that the orientation of the working components is controllable, which is conducive to the operation.

[0074] The hoisting operation device 100 provided in this application includes an operation component and the aforementioned pulley assembly 110, thus having the advantages of high reliability and easy operation control.

[0075] The flight sling system provided in this application includes the aforementioned pulley assembly 110 for connecting the suspended object via the pulley seat 111 of the pulley assembly 110; or, it includes the aforementioned slinging operation device 100. The flight sling system also includes a first sling 210 and at least two aircraft 400. The first sling 210 cooperates with the rollers 112 of the pulley assembly 110, and both ends of the first sling 210 are directly or indirectly connected to different aircraft 400. This flight sling system has good reliability, is easy to coordinate and control, and is convenient to operate.

[0076] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A pulley assembly, characterized in that, It includes a pulley seat, a roller, and an anti-torsion arm. The roller is rotatably connected to the pulley seat, and the outer periphery of the roller is used to cooperate with a first hoisting rope. One end of the anti-torsion arm is connected to the pulley seat, and the other end of the anti-torsion arm is used to slide with the first hoisting rope. The pulley seat is provided with a connecting structure for connecting external objects.

2. The pulley assembly according to claim 1, characterized in that, The pulley assembly includes at least two anti-torsion arms, one end of each anti-torsion arm away from the pulley seat being used for sliding engagement with the first suspension ropes extending from both sides of the roller.

3. The pulley assembly according to claim 1, characterized in that, The anti-torsion arm is provided with a collar at the end away from the pulley seat, and the collar is used for the first hoisting rope to pass through.

4. The pulley assembly according to claim 1, characterized in that, 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.

5. The pulley assembly according to any one of claims 1-4, characterized in that, The pulley seat forms a pulley groove, at least a portion of the roller is accommodated in the pulley groove, and the pulley assembly further includes a rotating shaft passing through the pulley groove, the roller being rotatably engaged with the rotating shaft.

6. The pulley assembly according to claim 5, characterized in that, The pulley seat includes two end plates and a base plate. The two end plates are spaced apart axially on the roller. The shaft is connected to the two end plates. The edge of the base plate is connected to the edges of the two end plates. The base plate is curved in an arc shape around the rotation axis of the roller.

7. The pulley assembly according to any one of claims 1-4, characterized in that, The outer periphery of the roller is provided with a limiting groove for cooperating with the first lifting rope.

8. The pulley assembly according to any one of claims 1-4, characterized in that, The connection structure includes studs, threaded holes, or hooks.

9. A hoisting operation device, characterized in that, It includes a working component and a pulley assembly as described in any one of claims 1-8, wherein the working component is connected to the connection structure of the pulley seat of the pulley assembly.

10. The hoisting operation device according to claim 9, characterized in that, The operating component is a fire extinguishing component, which is used to spray fire extinguishing agent.

11. The hoisting operation device according to claim 9, characterized in that, The working component includes a tension gauge, which is connected to the pulley seat of the pulley assembly via the tension gauge. The tension gauge is used to detect the tensile load borne by the pulley assembly.

12. A flight sling system, characterized in that, The device includes a pulley assembly as described in any one of claims 1-8, for connecting a suspended object via a pulley seat of the pulley assembly; or, it includes a suspension working device as described in any one of claims 9-11. The flight sling system also includes a first sling and at least two aircraft. The first sling cooperates with the rollers of the pulley assembly, and the two ends of the first sling are directly or indirectly connected to different aircraft.

13. The flight sling system according to claim 12, characterized in that, The flight sling system includes at least four of the aircraft and two second slings. The two ends of the first sling are respectively connected between the two ends of the two second slings, and the two ends of the second slings are respectively directly or indirectly connected to different aircraft.

14. The flight sling system according to claim 13, characterized in that, When the aircraft is in flight, the first sling and the second sling are coplanar.

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