Helicopter multi-point synchronous cable descending device convenient to disassemble and assemble

Abstract

The utility model provides a helicopter multi-point synchronous cable descending device convenient to disassemble and assemble, and the cable descending device comprises a longitudinal beam, the front end of the longitudinal beam is connected with an original parachute landing interface in a cabin; the cross beam is connected with the longitudinal beam, the cross beam is provided with a cable descending mooring point, and the cable descending mooring point is arranged at the position corresponding to an outlet of the helicopter; one end of the supporting rod is connected with the longitudinal beam, and the other end of the supporting rod is connected with an original seat connector on a floor in a cabin; one end of the pull rod is connected with the longitudinal beam, and the other end of the pull rod is connected with an original stretcher connector in a cabin; according to the helicopter multi-point synchronous cable descending device convenient to disassemble and assemble, the requirement that at most five persons conduct cable descending operation from five exits at the same time is met according to the cable descending operation requirement.

Description

Technical Field

[0001] The present application belongs to the technical field of helicopter structural design, and in particular relates to a helicopter multi-point synchronous rappelling device that is easy to assemble and disassemble. Background Art

[0002] The helicopter rappelling device is a special device installed on the fuselage structure to provide a rappelling interface. Special personnel such as special forces, special police and firefighters can use special ropes to quickly descend to the ground from a certain height without landing the helicopter, saving the time for helicopter takeoff and landing and achieving accurate and rapid manpower delivery.

[0003] The rappelling device is usually arranged at the cabin doors on both sides of the fuselage and the tail door at the rear of the fuselage, which can meet the needs of multiple people rappelling at the same time. Some helicopters also have rappelling exits at the bottom of the cabin. In this case, the rappelling device is usually arranged at the top of the cabin.

[0004] Currently, there are two types of mature device structures: joint-type and cantilever-type. The joint-type structure uses a fixed joint installed near the upper outer skin of the cabin door or the cabin roof frame beam. One end of the rope is connected to the joint, and personnel use the rope to rappel. The cantilever-type structure uses a fixed cantilever beam installed on the upper cabin reinforcement beam. One end of the cantilever beam is fixed to the reinforcement beam through a joint, and the other end extends outside the cabin door and is fixed to one end of the rope. Personnel use the rope to rappel.

[0005] Whether it's a joint-type or cantilever-type multi-point rappelling device, both require a separate mounting interface on the fuselage structure. The fuselage structure at the mounting interface must also be reinforced to transfer and distribute the load on the device through the mounting interface and reinforcement structure. This requirement for a separate mounting interface and necessary reinforcement of the fuselage structure at the mounting interface creates inconvenience in the installation of both joint-type and cantilever-type multi-point rappelling devices.

[0006] For the existing rappelling device structure, when rappelling from different exits of the helicopter, different rappelling devices need to be installed at different exit positions. For application scenarios that require simultaneous rappelling at multiple exits and multiple points, the difficulty of adapting the helicopter fuselage structure to the rappelling device is obviously increased. Utility Model Content

[0007] Purpose of this application: In order to solve the above problems, this application designs a helicopter multi-point synchronous rappelling device that is easy to disassemble and assemble. According to the requirements of the rappelling operation, it can meet the needs of up to 5 people to carry out rappelling operations from 5 exits at the same time.

[0008] The present application provides a multi-point synchronous rappelling device for a helicopter that is easy to assemble and disassemble, and the rappelling device comprises:

[0009] A longitudinal beam, the front end of which is connected to an existing parachute interface in the cabin;

[0010] a crossbeam connected to the longitudinal beam, the crossbeam having a rope mooring point, the rope mooring point being arranged at a position corresponding to the helicopter exit;

[0011] A support rod, one end of which is connected to the longitudinal beam, and the other end of which is connected to an existing seat interface on the cabin floor;

[0012] A pull rod, one end of which is connected to the longitudinal beam, and the other end of which is connected to an existing stretcher interface in the cabin.

[0013] Preferably, the helicopter exit includes left and right doors, a tail door and an exit at the bottom of the cabin.

[0014] Preferably, the crossbeam comprises:

[0015] a front crossbeam, arranged at the front portion of the longitudinal beam, with first rope mooring points being arranged at both ends of the front crossbeam;

[0016] a middle cross beam, arranged in the middle of the longitudinal beam, and provided with a second rope mooring point;

[0017] The rear cross beam is arranged at the tail of the longitudinal beam, and the rear cross beam is provided with a third rope mooring point.

[0018] Preferably, the first rope mooring point corresponds to the left and right doors; the second rope mooring point corresponds to the cabin bottom exit; and the third rope mooring point corresponds to the tail door.

[0019] Preferably, the front crossbeam is a telescopic rod; and the rappelling device further comprises:

[0020] A column, one end of which is connected to the longitudinal beam, and the other end of which is connected to the telescopic rod; wherein the first rappelling anchoring points are arranged at both ends of the telescopic rod.

[0021] Preferably, the longitudinal beams include a left longitudinal beam and a right longitudinal beam, the rappelling mooring point includes a hanging ring, and the struts connected between the longitudinal beams and the original seat interfaces on the cabin floor are arranged in an eight-shaped shape.

[0022] Beneficial technical effects of this application:

[0023] The present application provides a multi-point synchronous rappelling device for helicopters that is easy to assemble and disassemble, provides a total of 5 rappelling points, and can provide rappelling operations for 5 people at the same time, which can greatly improve the rappelling efficiency and enhance the search and rescue and combat capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a rappelling device provided in an embodiment of the present application;

[0025] Figure 2 An enlarged view of position I provided in an embodiment of the present application;

[0026] Figure 3 An enlarged view at position II provided in an embodiment of the present application;

[0027] Figure 4 An enlarged view at position III provided in an embodiment of the present application;

[0028] Among them, 1-front crossbeam; 2-middle crossbeam; 3-rear crossbeam; 4-left longitudinal beam; 5-right longitudinal beam; 6-support rod; 7-pull rod; 8-first rope mooring point; 10-second rope mooring point; 11-third rope mooring point; 14-detachable joint; 15-quick release ball stop pin; 16-hanging ring; 17-middle and rear crossbeam joint. DETAILED DESCRIPTION

[0029] See also Figures 1-4 The helicopter multi-point synchronized rappelling device described in this application is a spatial truss structure. It consists of longitudinal beams, transverse beams, struts, tie rods, quick-release ball stop pins, double-ear hanging rings, hanging ring joints, and connecting joints. The structure can be specifically divided into two parts.

[0030] (1) Main structure of the rappelling device

[0031] See the attached diagram for the main structure of the rappelling device. Figure 1 , mainly composed of longitudinal beams, struts, tie rods, and adapter joints. The main structure itself and the connection method with the fuselage are as follows:

[0032] 1) The front end of the longitudinal beam is connected to the existing parachute interface in the cabin through an adapter joint, and the rear end and middle part of the longitudinal beam are connected to the upper end of the strut through an adapter joint;

[0033] 2) The lower end of the support rod is connected to the existing seat interface and other device interfaces in the cabin through an adapter joint;

[0034] 3) One end of the pull rod is connected to the longitudinal beam through an adapter joint, and the other end is connected to the original stretcher interface in the cabin through an adapter joint.

[0035] Among them, the adapter joints are connected to the struts, pull rods and the original interfaces in the cabin with bolts; and the connections with the longitudinal beams are all connected with rivets.

[0036] The main structure of the rappel system utilizes existing connections within the cabin. Three pairs of struts and tie rods on the left and right sides are bolted together via adapters, ensuring reliability when the longitudinal beam is loaded and significantly facilitating assembly and disassembly. The adapters on the longitudinal beam are concentric with the beam, allowing for adaptive adjustment of the tie rods, struts, and crossbeam positions when the beam and adapter are riveted together, thus enhancing the feasibility of retrofitting and modification work.

[0037] When installing the main structure of the rappelling device, the position of the struts and tie rods relative to the stringers can be adaptively adjusted based on the position of the original interface in the cabin. Once the final position is determined, the adapter joint is riveted to the stringer. After the adapter joint connected to the stringer is riveted, the six struts and six tie rods are first screwed to the left and right stringers respectively. Then, the ends of the adapter joint connected to the interface in the cabin are screwed to the interface in the cabin and the struts and tie rods respectively. This completes the adaptive installation of the main structure of the rappelling device and the fuselage.

[0038] The entire main structure of the rappelling device is removable. When the rappelling device is not needed or there are no rappelling operations, the entire structure can be removed without affecting the existing cabin structure. Furthermore, the longitudinal beams of the rappelling device's main structure adhere closely to the sides of the cabin, minimizing the impact on the cabin's interior space. When there are no rappelling operations, only the rappelling function described below can be removed to increase cabin space and facilitate entry and exit. This significantly reduces disassembly and assembly time and improves structural maintainability.

[0039] (2) Functional structure of the rappelling device

[0040] The functional structure diagram of the rappelling device is attached. Figure 2-Figure 4 The structure itself and its connection to the main structure of the rappel device are as follows.

[0041] 1) The ends of the middle and rear crossbeams are connected to the longitudinal beams through adapter joints;

[0042] 2) The double-ear hanging ring is connected to the beam hanging ring joint through an adapter joint and a quick-release ball stop pin;

[0043] 3) The front crossbeam is connected to the left and right longitudinal beams with bolts through an adapter joint; this allows for easy removal of the front crossbeam;

[0044] The rappelling mechanism features retractable structures at both ends of the front crossbeam, allowing it to be extended outside the hatch for rappelling. This retraction is achieved by pressing a quick-release ball-bearing stop pin, and the length can be adjusted as needed. To ensure the front crossbeam does not interfere with the upper end of the hatch when extended outside, a vertical circular tube is designed on each side to connect to the connectors on the front crossbeam and longitudinal beams, allowing the front crossbeam to be lower than the hatch height.

[0045] Among them, the functional structure of the rappelling device is connected to the main rappelling structure by 16 bolts. When the rappelling task is not being performed, the main structure of the device does not need to be disassembled, and only the functional structure needs to be disassembled; this facilitates maintenance and use and shortens the disassembly and assembly time.

[0046] The multi-point synchronized helicopter rappelling device described in this application integrates rappelling points at five exits—the left and right doors, the rear door, and the cabin bottom exit—into a single, integrated structure. This effectively improves the device's adaptability to helicopter structures. The device provides five rappelling points, enabling simultaneous rappelling for five people, significantly improving rappelling efficiency and enhancing search, rescue, and combat capabilities. The interfaces connecting the device to the fuselage utilize existing equipment interfaces within the cabin, effectively enhancing the device's adaptability to helicopter modifications.

[0047] In the embodiment of the present application, the device provides rappelling mooring points for the four exits of the helicopter at the same time, avoiding the disadvantages of low efficiency and high cost of installing a rappelling device at each exit separately; the device provides a total of 5 rappelling points, which can provide rappelling operations for 5 people at the same time, which can greatly improve the rappelling efficiency and enhance the search and rescue and combat capabilities; according to the door width of the left and right doors, 1 to 2 front beams can be adaptively installed, and an additional 2 to 4 rappelling points can be added, which has the modification potential for more efficient rappelling operations.

[0048] Among them, the two ends of the front crossbeam of this device adopt a retractable design along the axis direction of the crossbeam; when rappelling, open the cabin door, extend the rappelling rings at both ends of the front crossbeam out of the cabin door to carry out the rappelling operation; when the rappelling operation is not carried out, the rappelling rings can be put into the cabin door; the entire rappelling main structure is a detachable structure, which completely borrows the interface in the cabin; when the rappelling device is not needed, it can be disassembled and removed as a whole without any impact on the original structure in the cabin.

[0049] Among them, the two ends of the front, middle and rear cross beams and the left and right longitudinal beams all adopt a detachable screw connection design; when the rappelling mission is not performed, the front, middle and rear cross beams can be quickly and individually disassembled from the device, and other parts of the device do not need to be disassembled; compared with disassembling the entire device, the disassembly difficulty is significantly reduced, the disassembly time is shortened, and the disassembly efficiency is improved.

[0050] The adapter joints on the longitudinal beams are concentric with the longitudinal beams, allowing the rear riveting position to be adjusted according to the position of the tie rods, struts, and crossbeams, improving the feasibility of retrofitting. By designing a long round tube to connect with the joints on the front crossbeam and longitudinal beams, the height of the front crossbeam can be adjusted to be lower than the height of the hatch door, preventing interference between the crossbeam and the hatch door frame.

[0051] It should be noted that the rappelling points at the five exits on the helicopter are integrated into an integral structure. Except for some existing interfaces on the aircraft that need to be redesigned and strengthened, all other connection interfaces between the device involved in this application and the fuselage cabin directly utilize the existing interfaces on the aircraft, which effectively improves the adaptability of the device to the helicopter structure; significantly reduces the amount of modification to the original aircraft structure, greatly reduces the time required for modification, and significantly improves the efficiency of modification.

[0052] At the same time, the device provides a total of 5 rappelling points, which can provide rappelling operations for 5 people at the same time. It also has the potential to be modified to adapt to 7 to 9 people rappelling at the same time, which can greatly improve the rappelling efficiency and enhance the search and rescue and combat capabilities; the device's crossbeams, longitudinal beams, struts and pull rods all adopt a screw connection design that can be quickly disassembled and assembled, and the 3 crossbeams can be removed and installed from the device separately, which significantly reduces the difficulty of disassembly and assembly, greatly reduces the disassembly and assembly time and workload, and improves the disassembly and assembly efficiency, which well meets the user's usage experience and field maintenance requirements.

Claims

1. A helicopter multi-point synchronous rappelling device that is easy to assemble and disassemble, characterized in that: The rappelling device comprises: A longitudinal beam, the front end of which is connected to an existing parachute interface in the cabin; a crossbeam connected to the longitudinal beam, the crossbeam having a rope mooring point, the rope mooring point being arranged at a position corresponding to the helicopter exit; A support rod, one end of which is connected to the longitudinal beam, and the other end of which is connected to an existing seat interface on the cabin floor; A pull rod, one end of which is connected to the longitudinal beam, and the other end of which is connected to an existing stretcher interface in the cabin.

2. The rappelling device according to claim 1, characterized in that: The helicopter exits include left and right doors, a tail door, and an exit at the bottom of the cabin.

3. The rappelling device according to claim 2, characterized in that: The crossbeam comprises: a front crossbeam, arranged at the front portion of the longitudinal beam, with first rope mooring points being arranged at both ends of the front crossbeam; a middle cross beam, arranged in the middle of the longitudinal beam, and provided with a second rope mooring point; The rear cross beam is arranged at the tail of the longitudinal beam, and the rear cross beam is provided with a third rope mooring point.

4. The rappelling device according to claim 3, characterized in that: The first rope mooring point corresponds to the left and right doors; the second rope mooring point corresponds to the bottom exit of the cabin; and the third rope mooring point corresponds to the tail door.

5. The rappelling device according to claim 4, characterized in that: The front crossbeam is a telescopic rod; the rappelling device further comprises: A column, one end of which is connected to the longitudinal beam, and the other end of which is connected to the telescopic rod; wherein the first rappelling anchoring points are arranged at both ends of the telescopic rod.

6. The rappelling device according to claim 1, characterized in that: The longitudinal beams include: a left longitudinal beam and a right longitudinal beam, and the rope mooring point includes a hanging ring; The support rods connected between the longitudinal beam and the original seat interface on the cabin floor are arranged in an eight-shaped shape.

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