Pull rope mounting assembly, load safety device and load system

Abstract

The utility model discloses a pull rope mounting assembly, a load safety device and a load system, and relates to the field of flight equipment. The pull rope mounting assembly comprises a fixed mounting piece, a pull rope mounting piece and a pre-connecting piece, the fixed mounting piece is used for being fixedly connected with the aircraft, the pull rope mounting piece is connected to the fixed mounting piece through the pre-connecting piece, and the pull rope mounting piece is used for being connected with a pull rope of the load safety device; the pre-connecting piece can lose efficacy under the pulling force effect of the pull rope when the airborne load falls, and therefore connection between the fixed installation piece and the pull rope installation piece is relieved. The load safety device comprises the pull rope, the safety assembly and the pull rope mounting assembly, the first safety piece of the safety assembly is arranged on the airborne load and can be pulled by the pull rope to relieve safety, the pre-connecting piece loses efficacy after safety is relieved, the pull rope is separated from the aircraft and falls down along with the airborne load, and then the aircraft is protected. Therefore, the safety risk caused by flying of the pull rope and the safety piece along with the aircraft can be avoided, and the safety of the aircraft is improved.

Description

Technical Field

[0001] The present application relates to the field of flight equipment, and in particular to a pull rope installation assembly, a load safety device and a load system. Background Art

[0002] At present, some aircraft are equipped with airborne payloads, which can be released in the air and landed at the target location to perform corresponding operations. When the airborne payload is a fire extinguishing bomb or other conditions that require ignition to perform corresponding operations, a safety device is usually provided on the airborne payload. The release of the airborne payload usually involves first releasing the safety device on the airborne payload and then releasing the fire extinguishing bomb. If the airborne payload release mechanism fails, the airborne payload will explode before leaving the aircraft, causing serious consequences.

[0003] The load safety device of the prior art separates the safety pin from the onboard load by pulling a rope to release the safety pin. Since the pull rope is usually fixed on the aircraft and the safety pin is connected to the pull rope, the safety pin is still connected to the aircraft after being separated from the onboard load, which affects the flight safety of the aircraft. Utility Model Content

[0004] The purpose of the present application is to provide a pull rope installation assembly, a load safety device and a load system, which can prevent the pull rope and the safety component in the load safety device from continuing to fly with the aircraft after the onboard load is dropped by the aircraft, thereby improving the safety of the aircraft.

[0005] The embodiment of the present application is implemented as follows:

[0006] In a first aspect, the present application provides a pull rope installation assembly, which is applied to a load safety device, the load safety device is used to set and release the safety for an onboard load mounted on an aircraft, the load safety device includes a safety assembly for being set on the onboard load and a pull rope for pulling at least one safety member in the safety assembly to release the safety, the pull rope installation assembly includes a fixed mounting member, a pull rope mounting member and a pre-connecting member, the fixed mounting member is used to be fixedly connected to the aircraft, the pull rope mounting member is connected to the fixed mounting member through the pre-connecting member, the pull rope mounting member is used to be connected to the pull rope of the load safety device, and the pre-connecting member can fail under the tension of the pull rope when the onboard load falls, thereby releasing the connection between the fixed mounting member and the pull rope mounting member.

[0007] In an optional embodiment, mating holes are provided on the fixed mounting component and / or the pull rope mounting component, and the pre-connecting component is interference fit with the mating hole; the pre-connecting component can break or fall off from the mating hole under the tension of the pull rope when the onboard load falls, so that the fixed mounting component is separated from the pull rope mounting component.

[0008] In an optional embodiment, the pre-connector is an expansion nail, a first matching hole is provided on the fixed mounting member, and a second matching hole is provided on the pull rope mounting member. The expansion nail passes through the first matching hole and has an interference fit with the second matching hole, or the expansion nail passes through the second matching hole and has an interference fit with the first matching hole; the expansion nail can break under the tension of the pull rope when the onboard load falls.

[0009] In an optional embodiment, a pull rope installation hole for the pull rope to pass through is provided on the pull rope installation member, and the pull rope installation member is connected to the pull rope through the pull rope installation hole.

[0010] In an optional embodiment, the pull rope installation assembly also includes a fastening screw, and a fastening screw hole is provided on the pull rope installation component, the fastening screw hole is connected to the pull rope installation hole, and the fastening screw is threadedly connected to the fastening screw hole and is used to tighten the pull rope in the pull rope installation hole.

[0011] In an optional embodiment, a second mating hole is provided on the pull rope mounting component, and the second mating hole and the fastening screw hole are respectively provided at both ends of the pull rope mounting component in the axial direction, and the second mating hole and the fastening screw hole are axially connected, and the pre-connecting component is inserted in the second mating hole, and the fastening screw and the pre-connecting component are used to jointly clamp the pull rope located in the pull rope mounting hole.

[0012] In an optional embodiment, the drawstring installation hole passes through the drawstring installation component and is perpendicular to the fastening screw hole.

[0013] In an optional embodiment, the fixed mounting member includes a first connecting portion and a second connecting portion, one end of the first connecting portion is connected to one end of the second connecting portion and the fixed mounting member is L-shaped, a connecting hole is provided on the first connecting portion, the connecting hole is used to cooperate with a fastener to fix the first connecting portion to the aircraft, and the second connecting portion is connected to the pull rope mounting member through a pre-connecting member.

[0014] In a second aspect, the present application provides a load safety device for setting and releasing safety for an airborne load mounted on an aircraft, the load safety device comprising a pull rope, a safety assembly and a pull rope installation assembly of any one of the aforementioned embodiments; the fixed mounting member of the pull rope installation assembly is used to connect to the aircraft, the safety assembly comprises a first safety member, the first safety member is used to be detachably connected to a first safety position of the airborne load to set safety for the airborne load; one end of the pull rope is connected to the pull rope installation member of the pull rope installation assembly, and the other end of the pull rope is connected to the first safety member; the first safety member can be pulled by the pull rope to detach from the first safety position to release the safety when the airborne load falls.

[0015] In an optional embodiment, the safety assembly also includes a second safety component, which is detachably arranged at a second safety position on the onboard load and connected to a pull rope, and the second safety position is located between the pull rope installation assembly and the first safety position; the second safety component can be pulled by the pull rope when the onboard load falls and detached from the second safety position to release the safety; and after the second safety component detaches from the second safety position, it can be limited by the onboard load, so that the pull rope applies tension to the pre-connecting component of the pull rope installation assembly, and keeps the pull rope connected to the onboard load after the pre-connecting component fails.

[0016] In an optional embodiment, the length of the pull rope between the second safety member and the first safety member is greater than the distance between the second safety member and the first safety member.

[0017] In an optional embodiment, the first safety member includes foam, and / or the second safety member includes a pull ring; one end of the pull rope is connected to the pull rope mounting member of the pull rope mounting assembly, and the other end of the pull rope is connected to the pull ring and connected to the foam.

[0018] In a third aspect, the present application provides a load system for use in an aircraft, the load system comprising an onboard load and the load safety device of the aforementioned embodiment, the onboard load having a first safety position and a second safety position, the second safety position being located between a pull rope mounting assembly and the first safety position; a limiting structure is provided on the onboard load, the limiting structure being used to abut against the second safety component after the second safety component of the safety assembly is disengaged from the second safety position to limit the movement of the second safety component, so that the second safety component and the pull rope connected to the second safety component remain connected to the onboard load.

[0019] In an optional embodiment, the airborne load includes a load body and a load control assembly, the load body is used to accommodate working materials, the load control assembly is used to control the flight direction of the airborne load during the falling process of the airborne load, the load control assembly includes a load fixing piece, the load body is connected to the load fixing piece, the load body is provided with an air inlet at a first safety position, and the first safety piece is detachably connected to the first safety position to block the air inlet.

[0020] In an optional embodiment, the load fixing part is a cylindrical structure, which has a front end and a rear end relative to each other in the axial direction, the front end of the load fixing part has an opening, the load body is plugged into the opening, and a through hole is provided on the side wall of the load fixing part at a position corresponding to the pull rope mounting assembly of the load safety device. The pull rope passes through the through hole and the opening in turn and is connected with the second safety part and the first safety part, and the edge of the opening forms a limiting structure.

[0021] In an optional embodiment, the limiting structure includes a limiting notch, which is arranged on the edge of the opening, and the limiting notch is used to engage with the second safety member.

[0022] In an optional embodiment, the second safety position is located on the outer peripheral surface of the load body, and the offset angle between the second safety position and the position of the limiting notch in the circumferential direction of the onboard load is less than or equal to 45°.

[0023] In an optional embodiment, the load body is connected to the load fixing member via a plurality of adjusting screws, and the plurality of adjusting screws are arranged at intervals around the circumference of the load fixing member.

[0024] The beneficial effects of the embodiments of the present application are:

[0025] The drawstring installation assembly of the present application includes a fixed installation part, a drawstring installation part and a pre-connection part. The fixed installation part is used to be fixedly connected to the aircraft. The drawstring installation part is connected to the fixed installation part through the pre-connection part. The drawstring installation part is used to be connected to the drawstring of the load safety device. The pre-connection part can fail under the pulling force of the drawstring when the onboard load falls, thereby releasing the connection between the fixed installation part and the drawstring installation part. Since the pre-connection part can provide a certain connection strength and can also fail under the pulling force of the drawstring, the drawstring can pull the safety part to release the safety, and also has the conditions to separate from the aircraft.

[0026] The load safety device of the present application includes a drawstring, a safety assembly and the above-mentioned drawstring installation assembly, the safety assembly includes a first safety component, one end of the drawstring is connected to the drawstring installation component of the drawstring installation assembly, and the other end of the drawstring is connected to the first safety component. The load system of the present application includes an airborne load and the above-mentioned load safety device, the airborne load has a first safety position and a second safety position, the second safety position is located between the drawstring installation assembly and the first safety position, the first safety component is detachably connected to the first safety position to set a safety for the airborne load, and the first safety component can be pulled by the drawstring to detach from the first safety position to release the safety when the airborne load falls. A limiting structure is provided on the airborne load, and the limiting structure is used to abut against the second safety component after the second safety component of the safety assembly detaches from the second safety position to limit the movement of the second safety component, so that the second safety component and the drawstring connected to the second safety component remain connected to the airborne load. When the first safety member is disengaged from the first safety position and the second safety member is disengaged from the second safety position, the limiting structure keeps the drawstring connected to the onboard load. As the onboard load falls, the drawstring pulls the drawstring installation member in the drawstring installation assembly, causing the pre-connection member to fail, thereby releasing the connection between the fixed installation member and the drawstring installation member. After that, the drawstring is separated from the aircraft and falls with the onboard load. This can avoid the safety risks caused by the drawstring and the safety member flying with the aircraft, thereby improving the safety of the aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a schematic diagram of the cooperation between the load system and the aircraft's pylon in one embodiment of the present application;

[0029] Figure 2 for Figure 1 A magnified view of the middle part II;

[0030] Figure 3 This is a schematic diagram of a pull cord installation assembly in one embodiment of the present application;

[0031] Figure 4 This is a cross-sectional view of a pull cord installation assembly in one embodiment of the present application.

[0032] Icons: 100-onboard load; 110-load body; 120-load fixing part; 121-edge; 122-through hole; 123-connecting frame; 124-adjusting screw; 125-limiting notch; 200-pull rope installation assembly; 210-fixed installation part; 211-first connecting part; 212-second connecting part; 213-connecting hole; 214-first matching hole; 220-pull rope installation part; 221-pull rope installation hole; 222-second matching hole; 223-fastening screw hole; 230-pre-connecting part; 240-fastening screw; 250-connecting screw; 260-first safety part; 270-second safety part; 280-third safety part; 300-hanging bracket. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] 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 which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0035] 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, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] When an aircraft in the related art releases an onboard load, as the onboard load falls, the pull rope will pull the safety part on the onboard load, thereby releasing the safety. However, the pull rope and the safety part will then fly with the aircraft, which will have a negative impact on the flight of the aircraft. For example, the pull rope may increase the flight resistance and the power consumption of the aircraft; or the pull rope may get caught on obstacles (such as trees, wires, etc.), causing the aircraft to lose control.

[0040] To this end, an embodiment of the present application provides a pull rope installation assembly, a load safety device and a load system, wherein the pull rope used to release the safety can be separated from the aircraft after the onboard load is released, thereby avoiding a negative impact on the flight of the aircraft.

[0041] Figure 1 FIG. 3 is a schematic diagram of the cooperation between the load system and the aircraft pylon 300 in one embodiment of the present application. Figure 1As shown, the load system provided by the embodiment of the present application can be applied to an aircraft. The aircraft can be a drone or an aircraft driven by a human. The load system includes an onboard load 100 and a load safety device, and the load safety device is used to set and release the insurance for the onboard load 100. The onboard load 100 has a first insurance position and a second insurance position, and the second insurance position is located between the drawstring installation assembly 200 of the load safety device and the first insurance position. The first insurance member 260 in the load safety device is detachably connected to the first insurance position to set insurance for the onboard load 100, and the first insurance member 260 can be pulled by the drawstring (not shown in the figure) of the load safety device when the onboard load 100 falls and detach from the first insurance position to release the insurance. A limited position structure is provided on the onboard load 100, and the limited position structure is used to abut with the second insurance member 270 after the second insurance member 270 of the insurance assembly is detached from the second insurance position to limit the movement of the second insurance member 270, so that the second insurance member 270 and the drawstring connected to the second insurance member 270 are connected to the onboard load 100.

[0042] In this embodiment, the first safety position of the airborne load 100 is located at the front end of the airborne load 100. Specifically, the airborne load 100 includes a load body 110 and a load control assembly. The load body 110 is used to accommodate working materials (such as fire extinguishing materials, pesticides, etc.). The load control assembly is used to control the flight direction of the airborne load 100 during the falling process of the airborne load 100, thereby controlling the landing point of the airborne load 100. The load control assembly includes a load fixing member 120, and the load body 110 is connected to the load fixing member 120. The first safety position is located at the load body 110, and an air inlet is opened on the load body 110. The first safety member 260 is detachably connected to the first safety position to block the air inlet. A connecting frame 123 is also provided on the outer peripheral surface of the load fixing member 120 for connecting with the pylon 300; the pylon 300 can be separated from the connecting frame 123 in a controlled manner, thereby realizing the delivery of the airborne load 100. Figure 1 Only a part of the airborne payload 100 is shown. The payload control assembly also includes control wings, guide wings and other structures arranged on the payload fixing member 120, which are used to control the flight attitude of the airborne payload 100, which will not be described in detail here.

[0043] In this embodiment, the load fixing member 120 is a cylindrical structure, and the load fixing member 120 has a front end and a rear end relative to each other in the axial direction. The front end of the load fixing member 120 has an opening, and the load body 110 is plugged into the opening. The air inlet is located at one end of the load body 110 away from the load fixing member 120. When the airborne load 100 falls in the air, the front end of the load fixing member 120 is usually facing downward, that is, the load body 110 is facing downward and the air inlet is facing downward. After the first safety member 260 is released (the air inlet is not blocked), the airflow enters the interior of the load body 110 to trigger the start of the pre-ignition state, so that the load body 110 can explode after falling to the target position, ensuring that the working materials inside it can play a role. It can be understood that if the load body 110 enters the pre-ignition state before the airborne load 100 is dropped, then there is a safety hazard. For example, sometimes there is a situation where the mission is canceled and the flight is returned. At this time, it will be very dangerous if the load body 110 (such as a fire extinguishing bomb) enters the pre-ignition state. In the embodiment of the present application, before the airborne payload 100 is dropped, the first safety member 260 is always in the first safety position to block the air inlet, so that the payload body 110 does not enter the pre-ignition state. Only after the drop, the first safety member 260 will be moved from the first safety position under the pulling force of the pull rope to open the air inlet. Therefore, the payload system of the embodiment of the present application has good safety.

[0044] In an embodiment of the present application, a load safety device is used to set and release the insurance for an onboard load 100 mounted on an aircraft. The load safety device includes a drawstring (not shown in the figure), a safety assembly, and a drawstring installation assembly 200. The drawstring installation assembly 200 is used to connect the aircraft. Specifically in this embodiment, the aircraft is connected to the onboard load 100 via a pylon 300, and the drawstring installation assembly 200 is connected to the pylon 300. In other optional embodiments, the drawstring installation assembly 200 can also be connected to other locations on the aircraft, such as the fuselage. The insurance assembly includes at least one insurance piece, and the drawstring is used to pull at least one insurance piece in the insurance assembly to release the insurance. In this embodiment, the insurance assembly includes a first insurance piece 260, one end of the drawstring is connected to the drawstring installation piece 220 of the drawstring installation assembly 200, and the other end of the drawstring is connected to the first insurance piece 260. As described above, the first safety member 260 is used to be detachably connected to the first safety position of the airborne load 100 to set a safety for the airborne load 100. The first safety member 260 can be pulled by the pull rope when the airborne load 100 falls and detached from the first safety position to release the safety. The connection method between the first safety member 260 and the load body 110 should have a weak connection strength to prevent the pull rope from being unable to drag the first safety member 260 away from the first safety position. Optionally, the first safety member 260 can be connected to the load body 110 through a fastener with low strength, and when the first safety member 260 is pulled by the pull rope, the fastener is destroyed; or, the first safety member 260 is adhered to the load body 110, and when the first safety member 260 is pulled by the pull rope, the first safety member 260 is detached from the load body 110; or, the first safety member 260 is inserted into the air inlet and can be pulled out from the air inlet under the drive of the pull rope.

[0045] In the embodiment of the present application, the limiting structure can limit the pull rope so that the pull rope remains connected to the onboard load 100 after the second safety component 270 is disengaged from the second safety position. In the present embodiment, the safety assembly also includes a second safety component 270, which is detachably arranged at the second safety position on the load body 110 and connected to the pull rope. The second safety position is located between the pull rope installation assembly 200 and the first safety position. When the onboard load 100 falls, the second safety component 270 can be pulled by the pull rope and disengaged from the second safety position to release the safety; and after the second safety component 270 is disengaged from the second safety position, it can be limited by the onboard load 100, so that the pull rope is connected to the pre-connector 230 (see FIG. 2 ) of the pull rope installation assembly 200. Figure 2 , Figure 3) applies tension, and keeps the pull rope connected to the onboard load 100 after the pre-connector 230 fails. In this embodiment, the length of the pull rope between the second safety member 270 and the first safety member 260 is greater than the distance between the second safety member 270 and the first safety member 260, so that when the second safety member 270 is removed, the pull rope between the second safety member 270 and the first safety member 260 does not generate tension. After the second safety member 270 is removed, the pull rope between the second safety member 270 and the first safety member 260 generates tension, so that the first safety member 260 is removed again.

[0046] Optionally, the first safety member 260 includes foam, and optionally, the second safety member 270 includes a pull ring, one end of the pull rope is connected to the pull rope installation member 220 of the pull rope installation assembly 200, and the other end of the pull rope is connected to the pull ring and connected to the foam. The pull rope can be a steel wire rope.

[0047] Specifically, a through hole 122 is provided on the side wall of the load fixing part 120 at a position corresponding to the drawstring installation assembly 200 of the load safety device, one end of the drawstring is connected to the drawstring installation assembly 220, and the other end of the drawstring passes through the through hole 122 and the opening at the front end of the load fixing part 120 in sequence, and then is connected to the second safety member 270 (such as a pull ring) and the first safety member 260 (such as foam), and the edge 121 of the opening forms a limiting structure. In this embodiment, the opening at the front end of the load fixing part 120 is in a tapered form. It can be understood that since the load body 110 is plugged into the opening of the load fixing part 120, the drawstring passes through the gap between the load body 110 and the opening edge 121 of the load fixing part 120, and the drawstring between the through hole 122 and the opening is located inside the load fixing part 120. The through hole 122 can be set at a position on the load fixing part 120 that is directly opposite to the drawstring installation assembly 200, thereby reducing the drawstring length between the through hole 122 and the drawstring installation assembly 200. The second safety piece 270 in this embodiment can provide another safety for the load body 110, and when it is pulled out, this safety is released. When the airborne load 100 falls, the pull rope will first pull the second safety piece 270 out of the second safety position, and then pull the first safety piece 260 out of the first safety position, thereby releasing the two safety pieces; thereafter, when the second safety piece 270 reaches the edge 121 of the opening of the load fixing member 120, it cannot pass through the gap between the edge 121 of the opening and the load body 110, so it will be abutted by the edge 121 of the opening, thus forming a limit for the pull rope, so that the pull rope and the first and second safety pieces 260 and 270 connected to the pull rope cannot be separated from the airborne load 100.

[0048] In this embodiment, the limiting structure includes a limiting notch 125, which is arranged on the edge 121 of the opening, and the limiting notch 125 is used to engage with the second safety member 270. By setting the limiting notch 125, the second safety member 270 can be limited to a certain position, that is, the position where the limiting notch 125 is located. In this embodiment, the second safety position is located on the outer peripheral surface of the load body 110, and the offset angle between the second safety position and the position of the limiting notch 125 in the circumferential direction of the airborne load 100 is less than or equal to 45°. It can be understood that if the second safety position and the position of the limiting notch 125 deviate too much in the circumferential direction, the extension path of the pull rope is too tortuous. When the pull rope is subjected to tension, the friction between the pull rope and the limiting notch 125 or the load body 110 is large, which is not conducive to the pull rope applying tension to the first safety member 260 and the second safety member 270.

[0049] If the load body 110 and the load fixing member 120 are threadedly connected, it is difficult to determine the position of the second safety position relative to the limiting notch 125 after the two are tightened. Therefore, in this embodiment, the load body 110 and the load fixing member 120 are connected by a plurality of adjustment screws 124, and the plurality of adjustment screws 124 are arranged at intervals around the circumference of the load fixing member 120. Further, the number of the adjustment screws 124 is four, and the four adjustment screws 124 are evenly spaced at 90°. The position of the limiting notch 125 can be adjusted by the adjustment screws 124, thereby adjusting the offset angle between the second safety position and the position of the limiting notch 125, so that the offset angle between the limiting notch 125 and the second safety position is less than or equal to 45°.

[0050] Further, the insurance assembly also includes a third insurance piece 280, which can be a latch structure, which can be pluggably arranged at the third insurance position of the load body 110. When the third insurance piece 280 is inserted into the load body 110, it sets a safety for the load body 110; when the third insurance piece 280 is pulled out from the load body 110, this safety is released. It can be seen that three insurances can be set for the load body 110 through the first insurance piece 260, the second insurance piece 270 and the third insurance piece 280. Optionally, the third insurance piece 280 needs to be manually released before the aircraft takes off, so it guarantees the safety of the aircraft and the airborne load 100 when they are on the ground. In other optional embodiments, the second insurance piece 270 and the third insurance piece 280 can also be omitted. In this case, the limiting structure of the airborne load 100 (such as the edge 121 of the opening) can limit the first insurance piece 260, and also keep the pull rope connected to the airborne load 100.

[0051] Figure 2 for Figure 1 A magnified view of the middle part II; Figure 3 This is a schematic diagram of a pull cord installation assembly 200 in one embodiment of the present application; Figure 4 2 is a cross-sectional view of a pull cord installation assembly 200 in one embodiment of the present application. Figures 2 to 4 As shown, in the embodiment of the present application, the drawstring installation assembly 200 includes a fixed installation member 210, a drawstring installation member 220 and a pre-connection member 230. The fixed installation member 210 is used to be fixedly connected to the aircraft, the drawstring installation member 220 is connected to the fixed installation member 210 through the pre-connection member 230, and the drawstring installation member 220 is used to be connected to the drawstring of the load safety device. The pre-connection member 230 can fail under the tension of the drawstring when the onboard load 100 falls, thereby releasing the connection between the fixed installation member 210 and the drawstring installation member 220. In this embodiment, the fixed installation member 210 is connected to the pylon 300.

[0052] Optionally, the fixed mounting member 210 and / or the pull rope mounting member 220 are provided with matching holes, and the pre-connecting member 230 is interference fit with the matching holes. The pre-connecting member 230 can break or fall off from the matching hole under the tension of the pull rope when the airborne load 100 falls. In this embodiment, the pre-connecting member 230 is an expansion nail, and a first matching hole 214 is provided on the fixed mounting member 210, and a second matching hole 222 is provided on the pull rope mounting member 220. The expansion nail is interference fit with the second matching hole 222 after passing through the first matching hole 214; or, the expansion nail is interference fit with the first matching hole 214 after passing through the second matching hole 222. As the pre-connecting member 230, the expansion nail can break under the tension of the pull rope when the airborne load 100 falls, so that the connection between the pull rope mounting member 220 and the fixed mounting member 210 is released. Figure 3 and Figure 4In the illustrated embodiment, the pre-connector 230 passes through the first matching hole 214 and is interference-fitted with the second matching hole 222. In another case, when the pulling force of the pull rope pulling the pull rope mounting member 220 overcomes the friction between the pre-connector 230 and the pull rope mounting member 220, the pull rope mounting member 220 will slide relative to the pre-connector 230, eventually causing the pre-connector 230 to fall off from the second matching hole 222, at which time the connection between the pull rope mounting member 220 and the fixed mounting member 210 is released. It should be understood that in order to ensure that the pull rope can pull the first safety member 260 out of the first safety position to release the safety, the connection strength between the pull rope mounting member 220 and the fixed mounting member 210 should be at least greater than the connection strength between the first safety member 260 and the load body 110. At the same time, in order to allow the fixed mounting member 210 and the pull rope mounting member 220 to separate under the tension of the pull rope when the airborne load 100 falls, the connection strength between the two should be less than the gravity of the airborne load 100. In other words, when the pull rope bears the gravity of the airborne load 100, the pre-connector 230 should fail to disconnect the fixed mounting member 210 from the pull rope mounting member 220. For example, in this embodiment, the weight of the airborne load 100 is set to 6KG, which is greater than the weight (3KG) that the expansion nail as the pre-connector 230 can bear. In this way, when the airborne load 100 falls, the expansion nail will slip or break.

[0053] In other optional embodiments, the form of the pre-connector 230 is not limited to the expansion nail, and the pre-connector 230 may also be other structures. For example, the pre-connector 230 may be a buckle, and when the onboard load 100 falls, the pull rope may force the buckle to deform or break, thereby separating the pull rope mounting member 220 from the fixed mounting member 210.

[0054] In this embodiment, the fixed mounting member 210 includes a first connecting portion 211 and a second connecting portion 212, one end of the first connecting portion 211 is connected to one end of the second connecting portion 212 and the fixed mounting member 210 is L-shaped, and a connecting hole 213 is provided on the first connecting portion 211, and the connecting hole 213 is used to cooperate with a fastener to fix the first connecting portion 211 with the aircraft, and the second connecting portion 212 is connected to the pull rope mounting member 220 through a pre-connecting member 230. Specifically, the connecting hole 213 cooperates with a connecting screw 250 to fix the first connecting portion 211 to the pylon 300.

[0055] In this embodiment, the drawstring installation member 220 is provided with a drawstring installation hole 221 for the drawstring to pass through, and the drawstring installation member 220 is connected to the drawstring through the drawstring installation hole 221. Further, the drawstring installation assembly 200 also includes a fastening screw 240, and the drawstring installation member 220 is provided with a fastening screw hole 223, and the fastening screw hole 223 is communicated with the drawstring installation hole 221, and the fastening screw 240 is screwed with the fastening screw hole 223 and is used to compress the drawstring in the drawstring installation hole 221. By providing the drawstring installation hole 221, the fastening screw 240 and the fastening screw hole 223, it is convenient for the operator to connect one end of the drawstring to the drawstring installation member 220, and a high connection strength can be ensured. Further, the drawstring installation hole 221 passes through the drawstring installation member 220 and is perpendicular to the fastening screw hole 223.

[0056] In this embodiment, the pull rope mounting member 220 is shaft-shaped, the second matching hole 222 and the fastening screw hole 223 are respectively arranged at the two ends of the pull rope mounting member 220 in the axial direction, and the second matching hole 222 is axially connected with the fastening screw hole 223, the pre-connector 230 is inserted into the second matching hole 222 (specifically, it is interference fit with the second matching hole 222), and the fastening screw 240 and the pre-connector 230 are used to clamp the pull rope located in the pull rope mounting hole 221. In this embodiment, the pull rope can be clamped by the pre-connector 230 and the fastening screw 240, ensuring that the end of the pull rope can be stably maintained in the pull rope mounting hole 221.

[0057] During the use of the load insurance system provided in the embodiment of the present application, only after the airborne load 100 is separated from the aircraft, the pull rope will be forced to pull out the first insurance piece 260 and the second insurance piece 270 from the corresponding position on the airborne load 100, so as to avoid the problem that the airborne load 100 explodes near the aircraft when it cannot be dropped due to a fault, causing serious consequences, and ensure the safe and reliable delivery process of the airborne load 100. The pull rope installation assembly 200 in the embodiment of the present application sets the bearing capacity of the pre-connector 230 to be less than the weight of the airborne load 100, so that after the first insurance piece 260 and the second insurance piece 270 are released, under the pulling force of the airborne load 100, the pre-connector 230 will fail (break or slip), so that the airborne load 100 is separated from the pylon 300 with the pull rope and the first insurance piece 260 through the second insurance piece 270 stuck at the limit notch 125, thereby separating from the aircraft, thereby improving the safety of the aircraft flight. In addition, the load protection device of the present application has a simple structure, low cost and high reliability.

[0058] In summary, the pull rope installation assembly 200 of the present application includes a fixed installation part 210, a pull rope installation part 220 and a pre-connection part 230. The fixed installation part 210 is used to be fixedly connected to the aircraft. The pull rope installation part 220 is connected to the fixed installation part 210 through the pre-connection part 230. The pull rope installation part 220 is used to connect with the pull rope of the load safety device. The pre-connection part 230 can fail under the tension of the pull rope when the airborne load 100 falls, thereby releasing the connection between the fixed installation part 210 and the pull rope installation part 220. Since the pre-connection part 230 can provide a certain connection strength and can also fail under the tension of the pull rope, the pull rope can pull the safety part to release the safety, and also has the conditions for separation from the aircraft.

[0059] The load safety device of the present application includes a pull rope, a safety assembly and the pull rope installation assembly 200 mentioned above, the safety assembly includes a first safety piece 260 and a second safety piece 270, one end of the pull rope is connected to the pull rope installation piece 220 of the pull rope installation assembly 200, and the other end of the pull rope is connected to the first safety piece 260 and the second safety piece 270. The load system of the present application includes an onboard load 100 and the load safety device mentioned above, the onboard load 100 has a first safety position and a second safety position, and the second safety position is located between the pull rope installation assembly 200 and the first safety position. The first safety piece 260 is detachably connected to the first safety position to set a safety for the onboard load 100, and the first safety piece 260 can be pulled by the pull rope when the onboard load 100 falls and detached from the first safety position to release the safety; the second safety piece 270 is detachably connected to the second safety position to set a safety for the onboard load 100, and the second safety piece 270 can be pulled by the pull rope when the onboard load 100 falls and detached from the second safety position to release the safety. A limiting structure is provided on the airborne load 100. The limiting structure is used to abut against the second safety member 270 after the second safety member 270 of the safety assembly is separated from the second safety position to limit the movement of the second safety member 270, so that the second safety member 270 and the pull rope connected to the second safety member 270 remain connected to the airborne load 100. When the second safety member 270 is separated from the second safety position and the first safety member 260 is separated from the first safety position, the limiting structure allows the pull rope to remain connected to the airborne load 100. As the airborne load 100 falls, the pull rope will pull the pull rope installation member 220 in the pull rope installation assembly 200, making the pre-connecting member 230 invalid, thereby releasing the connection between the fixed installation member 210 and the pull rope installation member 220. Thereafter, the pull rope is separated from the aircraft and falls with the airborne load 100, so that the safety risks caused by the pull rope and the safety members (the first safety member 260 and the second safety member 270) flying with the aircraft can be avoided, thereby improving the safety of the aircraft.

[0060] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pull rope installation assembly, applied to a load protection device, characterized in that: The load safety device is used to set and release safety for the onboard load mounted on the aircraft. The load safety device includes a safety component for being set on the onboard load and a pull rope for pulling at least one safety member in the safety component to release the safety. The pull rope installation assembly includes a fixed installation member, a pull rope installation member and a pre-connecting member. The fixed installation member is used to be fixedly connected to the aircraft. The pull rope installation member is connected to the fixed installation member through the pre-connecting member. The pull rope installation member is used to be connected to the pull rope of the load safety device. The pre-connecting member can fail under the tension of the pull rope when the onboard load falls, thereby releasing the connection between the fixed installation member and the pull rope installation member.

2. The pull cord installation assembly according to claim 1, characterized in that: The fixed mounting component and / or the pull rope mounting component are provided with matching holes, and the pre-connecting component is interference fit with the matching holes; the pre-connecting component can break or fall off from the matching hole under the pulling force of the pull rope when the onboard load falls, so that the fixed mounting component is separated from the pull rope mounting component.

3. The pull cord installation assembly according to claim 2, characterized in that: The pre-connector is an expansion nail, the fixed mounting part is provided with a first matching hole, the pull rope mounting part is provided with a second matching hole, the expansion nail is interference fit with the second matching hole after passing through the first matching hole, or the expansion nail is interference fit with the first matching hole after passing through the second matching hole; the expansion nail can break under the tension of the pull rope when the onboard load falls.

4. The pull cord installation assembly according to any one of claims 1 to 3, characterized in that: The drawstring installation piece is provided with a drawstring installation hole for the drawstring to pass through, and the drawstring installation piece is connected to the drawstring through the drawstring installation hole.

5. The pull cord installation assembly according to claim 4, characterized in that: The pull rope installation assembly also includes a fastening screw. The pull rope installation piece is provided with a fastening screw hole, the fastening screw hole is connected to the pull rope installation hole, and the fastening screw is threadedly connected to the fastening screw hole and is used to tighten the pull rope in the pull rope installation hole.

6. The pull cord installation assembly according to claim 5, characterized in that: A second matching hole is provided on the pull rope mounting component, and the second matching hole and the fastening screw hole are respectively provided at two ends of the pull rope mounting component in the axial direction, and the second matching hole is axially connected with the fastening screw hole, and the pre-connecting component is inserted in the second matching hole, and the fastening screw and the pre-connecting component are used to jointly clamp the pull rope located in the pull rope mounting hole.

7. The pull cord installation assembly according to claim 5, characterized in that: The drawstring installation hole passes through the drawstring installation piece and is perpendicular to the fastening screw hole.

8. The pull cord installation assembly according to any one of claims 1 to 3, characterized in that: The fixed mounting member includes a first connecting part and a second connecting part, one end of the first connecting part is connected to one end of the second connecting part and the fixed mounting member is L-shaped, a connecting hole is provided on the first connecting part, and the connecting hole is used to cooperate with a fastener to fix the first connecting part to the aircraft, and the second connecting part is connected to the pull rope mounting member through the pre-connecting member.

9. A load insurance device, used for setting and releasing insurance for an onboard load mounted on an aircraft, characterized in that: The load safety device includes a pull rope, a safety assembly and a pull rope installation assembly according to any one of claims 1 to 8; the fixed mounting part of the pull rope installation assembly is used to connect to an aircraft, and the safety assembly includes a first safety part, which is used to be detachably connected to a first safety position of the onboard load to set a safety for the onboard load; one end of the pull rope is connected to the pull rope installation part of the pull rope installation assembly, and the other end of the pull rope is connected to the first safety part; the first safety part can be pulled by the pull rope when the onboard load falls and detached from the first safety position to release the safety.

10. The load protection device according to claim 9, characterized in that: The safety assembly also includes a second safety component, which is detachably arranged at a second safety position on the onboard load and connected to the pull rope, and the second safety position is located between the pull rope installation assembly and the first safety position; the second safety component can be pulled by the pull rope when the onboard load falls and detached from the second safety position to release the safety; and the second safety component can be limited by the onboard load after detaching from the second safety position, so that the pull rope applies tension to the pre-connecting component of the pull rope installation assembly and keeps the pull rope connected to the onboard load after the pre-connecting component fails.

11. The load protection device according to claim 10, characterized in that: The length of the pull rope between the second safety member and the first safety member is greater than the distance between the second safety member and the first safety member.

12. The load protection device according to claim 10, characterized in that: The first safety member includes foam, and / or the second safety member includes a pull ring; one end of the pull rope is connected to the pull rope installation member of the pull rope installation assembly, and the other end of the pull rope is connected to the pull ring and connected to the foam.

13. A load system, applied to an aircraft, characterized in that: The load system includes an onboard load and a load safety device according to any one of claims 9 to 12, the onboard load having a first safety position and a second safety position, the second safety position being located between the pull rope mounting assembly and the first safety position; a limiting structure is provided on the onboard load, the limiting structure being used to abut against the second safety piece of the safety assembly after the second safety piece is disengaged from the second safety position to limit the movement of the second safety piece, so that the second safety piece and the pull rope connected to the second safety piece remain connected to the onboard load.

14. The load system according to claim 13, characterized in that The airborne load includes a load body and a load control component, the load body is used to accommodate working materials, the load control component is used to control the flight direction of the airborne load during the falling process of the airborne load, the load control component includes a load fixing part, the load body is connected to the load fixing part, the first safety position is located at the load body, an air inlet is opened on the load body, and the first safety part is detachably connected to the first safety position to block the air inlet.

15. The load system according to claim 14, characterized in that The load fixing part is a cylindrical structure, and has a front end and a rear end relative to each other in the axial direction. The front end of the load fixing part has an opening, and the load body is plugged into the opening. A through hole is provided on the side wall of the load fixing part at a position corresponding to the pull rope installation assembly of the load safety device. The pull rope passes through the through hole and the opening in turn and is connected to the second safety part and the first safety part. The edge of the opening forms the limiting structure.

16. The load system according to claim 15, characterized in that The limiting structure comprises a limiting notch, and the limiting notch is arranged on the edge of the opening, and the limiting notch is used for engaging with the second safety member.

17. The load system according to claim 16, characterized in that The second safety position is located on the outer circumferential surface of the load body, and the offset angle between the second safety position and the position of the limiting notch in the circumferential direction of the onboard load is less than or equal to 45°.

18. The load system according to claim 16, characterized in that The load body is connected to the load fixing member via a plurality of adjusting screws, and the plurality of adjusting screws are arranged at intervals around the circumference of the load fixing member.

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