Anti-torsion lifting appliance for lifting helicopter

Abstract

The invention discloses an anti-torsion lifting appliance for lifting a helicopter. The anti-torsion lifting appliance comprises an anti-torsion device, a triangular lifting frame, a square frame and an auxiliary lifting hook, the anti-torsion device comprises a circular lock disc and two connecting rod assemblies symmetrically and fixedly arranged above the circular lock disc, the top ends of connecting rods at the symmetrical positions in the two connecting rod assemblies are fixedly connected to form two hanging points, and the two connecting rod assemblies and the circular lock disc are fixedly hung on a web frame beam of the helicopter through the two hanging points. The circular lock disc is provided with at least one set of clamping grooves in the radial direction and used for clamping the triangular hanging bracket into one set of clamping grooves of the circular lock disc, so that the top end of the triangular hanging bracket is located between the two sets of connecting rod assemblies, the two bottom ends symmetrically arranged in the triangular hanging bracket are located below the circular lock disc, and the square frame is connected through the two bottom ends of the triangular hanging bracket. According to the technical scheme, the problems that due to the fact that an existing helicopter external hanging system can only conduct single-degree-of-freedom constraint, when goods are subjected to unbalanced force / torque, the goods are twisted with a sling as the axis, the posture of the goods cannot be controlled, and precise helicopter hoisting cannot be conducted are solved.

Description

Technical Field

[0001] The invention relates to the field of, but is not limited to, the technical field of helicopter external hanging, and in particular to an anti-twist hanger for helicopter hanging. Background Art

[0002] Helicopters have the advantages of flexible maneuverability, stable hovering, vertical take-off and landing, and combined with the external suspension system, they have the characteristics of aerial delivery. Helicopter external suspension flight is widely used in the fields of material delivery, fire fighting, agricultural and forestry spraying tower assembly, etc.

[0003] When the helicopter is in a hovering position, using external attachments for precise lifting is a unique mission scenario for helicopters. Compared with cranes, helicopters are not affected by complex environments and lifting heights. When a helicopter performs precise lifting tasks (such as tower assembly), the angle and position of the hanging objects are controlled by adjusting the helicopter's lateral or longitudinal posture for docking and assembly. Because the assembly and docking accuracy requirements are high, when the helicopter performs precise lifting tasks, the hanging objects must not be twisted relative to the helicopter in order to achieve posture control of the cargo for docking and assembly.

[0004] In the existing helicopter external hanging system, cargo is installed on the cargo hook of the helicopter external hanging system through a sling, which can only be constrained by a single degree of freedom. During the hanging process, when the cargo is subjected to unbalanced force / torque, it will twist around the sling as the axis. The traditional hanging structure cannot prevent the cargo from twisting, cannot control the posture of the cargo, and cannot perform precise helicopter lifting. Summary of the invention

[0005] The purpose of the present invention is: in order to solve the above-mentioned problem, an embodiment of the present invention provides an anti-twist sling for helicopter hoisting, so as to solve the problem that the existing helicopter external hanging system can only perform single-degree-of-freedom constraints, resulting in that when the cargo is subjected to unbalanced force / torque, it will twist around the sling as the axis, resulting in the inability to control the posture of the cargo and the inability to perform precise helicopter hoisting.

[0006] The technical solution of the present invention is as follows: an embodiment of the present invention provides an anti-twist hoist for helicopter hoisting, comprising: an anti-twist device 1, a triangular hanger 2, a square frame 3 and an auxiliary hook 4;

[0007] The anti-twist device 1 comprises: a circular lock plate 13, two groups of connecting rod assemblies symmetrically fixedly arranged above the circular lock plate 13, and the top ends of the connecting rods at symmetrical positions in the two groups of connecting rod assemblies are fixedly connected to form two hanging points, which are used to fix and hang the two groups of connecting rod assemblies and the circular lock plate 13 on the belly frame beam of the helicopter through the two hanging points;

[0008] The circular locking plate 13 is radially provided with at least one group of slots for engaging the triangular hanger 2 in one group of slots of the circular locking plate 13, so that the top end of the triangular hanger 2 is located between the two groups of connecting rod assemblies, and the two symmetrically arranged bottom ends of the triangular hanger 2 are located below the circular locking plate 13, and the square frame 3 is connected through the two bottom ends of the triangular hanger 2.

[0009] Optionally, in the anti-torsion sling for helicopter hoisting as described above,

[0010] Each group of connecting rod assemblies in the anti-twist device 1 includes: an upper connecting rod of a V-shaped structure, a lower connecting rod of a ∧-shaped structure, the bottom end of the upper connecting rod is hinged to the top end of the lower connecting rod, the two bottom ends of the lower connecting rod are fixedly connected to the circular locking plate 13, and the top end of one side of the upper connecting rod is fixedly connected to the top end of the upper connecting rod at the corresponding position of the other connecting rod assembly through a connecting piece, so that two hanging points for hanging are formed by the two groups of connecting rod assemblies; each connecting piece is provided with a single ear joint 11 for connecting to the helicopter joint 7.

[0011] Optionally, in the anti-torsion sling for helicopter hoisting as described above,

[0012] The circular locking disk 13 in the anti-twist device 1 includes: an annular main frame, a supporting structure arranged in the plane of the annular main frame, the supporting structure is fixedly connected to the bottom end of the lower connecting rod, and a slot radially arranged along the circular locking disk 13 is formed through the gap between the supporting structures, so that the triangular hanger 2 can be restricted to a fixed position in the circular locking disk 13 through the slot.

[0013] Optionally, in the anti-torsion sling for helicopter hoisting as described above,

[0014] The support structure in the circular locking disk 13 is configured as: a plurality of V-shaped or U-shaped support structures uniformly arranged along the circumference of the annular main frame, both ends of each of the V-shaped or U-shaped support structures being fixedly installed along the inner ring circumference of the annular main frame, and the V-shaped or U-shaped support structures are symmetrically arranged along the radial direction of the annular main frame to form a group of slots through two adjacent groups of support structures along the radial direction on both symmetrical sides of the annular main frame.

[0015] Optionally, in the anti-torsion sling for helicopter hoisting as described above,

[0016] In the circular lock disk 13, four groups of slots are formed by eight V-shaped or U-shaped supporting structures; when the circular lock disk 13 is in use, the triangular hanger 2 is mounted by snapping in one group of the slots, so that the triangular hanger 2 is snapped and fixed in the circular lock disk 13 in different radial directions.

[0017] Optionally, in the anti-torsion sling for helicopter hoisting as described above,

[0018] The triangular hanger 2 includes a tripod 22, an upper hoisting ring 21 arranged at the top of the tripod 22, and two lower hoisting rings 23 arranged at the bottom ends of both sides of the tripod 22, wherein the upper hoisting ring 21 is connected to the cargo hook 8 on the aircraft, and each lower hoisting ring 23 is connected to the two ends of the square frame 3 through two connecting rods;

[0019] The triangular hanger 2 is used to transfer the external load of the cargo to the cargo hook on the aircraft.

[0020] Optionally, the anti-torsion sling for helicopter hoisting as described above further includes: an auxiliary hanging assembly;

[0021] The auxiliary hanging assembly comprises: 4 auxiliary hanging hooks 4;

[0022] An auxiliary hook 4 is installed below each of the four lifting points of the square frame 3. Each of the auxiliary hooks 4 includes a sling 41 and a hook 42. The hook 42 at the lower end of each auxiliary hook 4 is connected to the cargo.

[0023] Optionally, in the anti-torsion sling for helicopter hoisting as described above,

[0024] The auxiliary hanging assembly is used to adjust the initial posture of the cargo by adjusting the length of each sling 41 in the four auxiliary hooks 4;

[0025] The hook 42 in each auxiliary hook 4 is electrically connected to the onboard control system, and is used to control the hook to open through the onboard control system to achieve the detachment of the cargo.

[0026] The beneficial effects of the present invention are as follows: an embodiment of the present invention provides an anti-twist hoist for helicopter hoisting, wherein the anti-twist device 1 comprises: a circular locking plate 13, two groups of connecting rod assemblies symmetrically fixedly arranged above the circular locking plate 13, the top ends of the connecting rods at symmetrical positions in the two groups of connecting rod assemblies are fixedly connected to form two hanging points, which are used to fix and hang the two groups of connecting rod assemblies and the circular locking plate 13 on the belly frame beam of the helicopter through the two hanging points; the circular locking plate 13 is radially provided with at least one group of slots, which is used to engage the triangular hanger 2 in one group of slots of the circular locking plate 13, so that the top end of the triangular hanger 2 is located between the two groups of connecting rod assemblies, and the two bottom ends symmetrically arranged in the triangular hanger 2 are located below the circular locking plate 13, and the square frame 3 is connected through the two bottom ends of the triangular hanger 2. By using the anti-twist sling for helicopter hoisting provided by the embodiment of the present invention, on the one hand, the cargo is successively installed on the cargo hook 8 on the aircraft through the auxiliary hook 4, the square frame 3, and the triangular hanger 2, and the auxiliary hook 4, the square frame 3, and the triangular hanger 2 realize the function of hanging cargo; on the other hand, by adjusting the length of the sling 41 of the auxiliary hook 4, the cargo can be adjusted to the docking angle, and the anti-twist sling is installed under the belly of the aircraft, and the anti-twist function of the cargo is realized by the matching engagement of the card slot in the circular lock plate 13 and the triangular hanger 2.

[0027] The anti-twist sling provided by the present invention can achieve a predetermined anti-twist function when a helicopter slings cargo, and can achieve precise helicopter lifting by adjusting the helicopter's hovering posture and controlling the posture and position of the cargo. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0029] Figure 1 A schematic diagram of the overall structure of an anti-twist hoist for helicopter hoisting provided by an embodiment of the present invention;

[0030] Figure 2 for Figure 1 The illustrated embodiment is a schematic structural diagram of an anti-twist device in an anti-twist hoist for helicopter hoisting;

[0031] Figure 3 for Figure 1 The illustrated embodiment is a schematic structural diagram of a triangular hanger in an anti-twist hanger for helicopter hoisting;

[0032] Figure 4 for Figure 1 A schematic diagram of the structure of an auxiliary hook in an anti-twist hoist for helicopter hoisting provided by the illustrated embodiment;

[0033] Figure 5 The present invention is a schematic diagram of the application structure of the anti-torsion lifting device for helicopter hoisting provided by the embodiment of the present invention. DETAILED DESCRIPTION

[0034] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0035] The above background technology has explained the advantages of using external hanging for precise lifting when the helicopter is in a hovering posture; when the helicopter performs precise lifting tasks (such as tower assembly), it is necessary to adjust the lateral or longitudinal posture of the helicopter to control the angle and position of the hanging object for docking and assembly. However, the existing helicopter external hanging system can only perform single-degree-of-freedom constraints, which causes the cargo to twist around the sling as the axis when it is subjected to unbalanced forces / torques, resulting in the inability to control the posture of the cargo and the inability to perform precise helicopter lifting.

[0036] In view of the above problems, an embodiment of the present invention provides an anti-torsion sling for helicopter hoisting, which can be used for precise hoisting of helicopters when performing hoisting tasks, can effectively fix external loads, and can ensure the docking accuracy of hoisting.

[0037] The present invention provides the following specific embodiments which can be combined with each other. The same or similar concepts or processes may not be described in detail in some embodiments.

[0038] Figure 1 The overall structure diagram of an anti-twist hoist for helicopter hoisting provided by an embodiment of the present invention is shown in FIG. Figure 1 As shown, the composition structure of the anti-twist hoist for helicopter hoisting provided by the embodiment of the present invention may include: an anti-twist device 1, a triangular hanger 2, a square frame 3 and an auxiliary hook 4.

[0039] Figure 2 for Figure 1 The embodiment shown is a schematic diagram of the structure of the anti-twist device in the anti-twist hoist for helicopter hoisting. Figure 1 and Figure 2 In the structure of the anti-twist hanger shown, the anti-twist device 1 includes: a circular locking plate 13, two groups of connecting rod assemblies symmetrically fixedly arranged above the circular locking plate 13, and the top ends of the connecting rods at symmetrical positions in the two groups of connecting rod assemblies are fixedly connected to form two hanging points, which are used to fix and hang the two groups of connecting rod assemblies and the circular locking plate 13 on the belly frame beam of the helicopter through the two hanging points.

[0040] like Figure 1 and Figure 2As shown, the circular locking disk 13 in the anti-twist device 1 is radially provided with at least one group of slots for engaging the triangular hanger 2 in one group of slots of the circular locking disk 13, so that the top end of the triangular hanger 2 is located between the two groups of connecting rod assemblies, and the two symmetrically arranged bottom ends of the triangular hanger 2 are located below the circular locking disk 13, and the square frame 3 is connected through the two bottom ends of the triangular hanger 2.

[0041] The anti-twist sling for helicopter hoisting provided in the embodiment of the present invention adopts a circular lock plate 13 with two sets of connecting rod assemblies and a triangular hanger 2, has an anti-twist effect, and can achieve a predetermined anti-twist function when the helicopter hangs cargo.

[0042] In one implementation of the embodiment of the present invention, Figure 2 As shown, each group of connecting rod assemblies in the anti-twist device 1 includes: an upper connecting rod of a V-shaped structure, a lower connecting rod of a ∧-shaped structure, the bottom end of the upper connecting rod is hinged to the top end of the lower connecting rod, the two bottom ends of the lower connecting rod are fixedly connected to the circular locking plate 13, and the top end of one side of the upper connecting rod is fixedly connected to the top end of the upper connecting rod at the corresponding position of the other connecting rod assembly through a connecting piece, so that two hanging points for hanging are formed by the two groups of connecting rod assemblies; each connecting piece is provided with a single ear joint 11 for connecting to the helicopter joint 7.

[0043] In one implementation of the embodiment of the present invention, Figure 1 and Figure 2 As shown, the circular locking disk 13 in the anti-twist device 1 includes: an annular main frame, a supporting structure arranged in the plane of the annular main frame, the supporting structure is fixedly connected to the bottom end of the lower connecting rod, and a slot radially arranged along the circular locking disk 13 is formed through the gap between the supporting structures, so as to limit the triangular hanger 2 to a fixed position in the circular locking disk 13 through the slot.

[0044] In a specific implementation of this implementation method, the support structure in the circular locking disk 13 is, for example, configured as: a plurality of V-shaped or U-shaped support structures uniformly arranged along the circumference of the annular main frame, both ends of each V-shaped or U-shaped support structure are fixedly installed along the inner ring circumference of the annular main frame, and the V-shaped or U-shaped support structures are symmetrically arranged along the radial direction of the annular main frame to form a group of slots through two adjacent groups of support structures on both sides of the annular main frame in the radial direction.

[0045] like Figure 1 and Figure 2 As shown, it is illustrated that in the circular lock disk 13, four groups of slots are formed by eight V-shaped or U-shaped supporting structures; when the circular lock disk 13 is in use, the triangular hanger 2 is mounted by snapping in one group of the slots, so that the triangular hanger 2 can be snapped in and fixed in the circular lock disk 13 in different radial directions.

[0046] In a preferred embodiment, the triangular hanger 2 is engaged at the symmetric plane position of the two connecting rod assemblies.

[0047] In one implementation of the embodiment of the present invention, a triangular hanger structure is provided, such as Figure 3 As shown, Figure 1 The illustrated embodiment provides a schematic diagram of the structure of a triangular hanger in an anti-twist hanger for helicopter hoisting. In this implementation, the triangular hanger 2 includes a tripod 22, an upper hoisting ring 21 disposed at the top of the tripod 22, and two lower hoisting rings 23 disposed at the bottom ends of both sides of the tripod 22. The upper hoisting ring 21 is connected to the cargo hook 8 on the aircraft, and each lower hoisting ring 23 is connected to the two ends of the square frame 3 through two connecting rods.

[0048] The triangular hanger 2 in this implementation is used to transfer the external load of the cargo (including the gravity in the vertical direction, the aerodynamic force during the flight, etc.) to the cargo hook on the aircraft.

[0049] In one implementation of the embodiment of the present invention, the anti-twist hoist for helicopter hoisting may further include: an auxiliary hanging assembly; specifically, four auxiliary hooks 4. Figure 4 As shown, Figure 1 The illustrated embodiment is a schematic structural diagram of an auxiliary hook in an anti-twist hoist for helicopter hoisting.

[0050] In this implementation, an auxiliary hook 4 is installed below each of the four lifting points of the square frame 3. Each auxiliary hook 4 includes a sling 41 and a hook 42. The hook 42 at the lower end of each auxiliary hook 4 is connected to the cargo.

[0051] like Figure 5 FIG. 1 is a schematic diagram of the application structure of the anti-twist hoist for helicopter hoisting provided by an embodiment of the present invention. Figure 5 The diagram shows the connection between the anti-twist sling and the helicopter connection structure and the connection form of the hanging cargo. The auxiliary hanging assembly in this implementation is used to adjust the initial posture of the cargo by adjusting the length of each sling 41 in the four auxiliary hooks 4; in addition, the hook in each auxiliary hook 4 is electrically connected to the onboard control system, which is used to control the hook to open through the onboard control system to achieve the detachment of the cargo.

[0052] The anti-twist hoist for helicopter hoisting provided in an embodiment of the present invention comprises an anti-twist device 1 including: a circular locking plate 13, two groups of connecting rod assemblies symmetrically fixedly arranged above the circular locking plate 13, the top ends of the connecting rods at symmetrical positions in the two groups of connecting rod assemblies are fixedly connected to form two hanging points, which are used to fix and hang the two groups of connecting rod assemblies and the circular locking plate 13 on the belly frame beam of the helicopter through the two hanging points; the circular locking plate 13 is provided with at least one group of slots along the radial direction, which is used to engage the triangular hanger 2 in one group of slots of the circular locking plate 13, so that the top end of the triangular hanger 2 is located between the two groups of connecting rod assemblies, and the two bottom ends symmetrically arranged in the triangular hanger 2 are located below the circular locking plate 13, and the square frame 3 is connected through the two bottom ends of the triangular hanger 2. By using the anti-twist sling for helicopter hoisting provided by the embodiment of the present invention, on the one hand, the cargo is successively installed on the cargo hook 8 on the aircraft through the auxiliary hook 4, the square frame 3, and the triangular hanger 2, and the auxiliary hook 4, the square frame 3, and the triangular hanger 2 realize the function of hanging cargo; on the other hand, by adjusting the length of the sling 41 of the auxiliary hook 4, the cargo can be adjusted to the docking angle, and the anti-twist sling is installed under the belly of the aircraft, and the anti-twist function of the cargo is realized by the matching engagement of the card slot in the circular lock plate 13 and the triangular hanger 2.

[0053] The anti-twist sling provided by the present invention can achieve a predetermined anti-twist function when a helicopter slings cargo, and can achieve precise helicopter lifting by adjusting the helicopter's hovering posture and controlling the posture and position of the cargo.

[0054] The following is an explanation of the usage of the anti-twist hoist for helicopter hoisting provided by an embodiment of the present invention through a specific example.

[0055] Specific Examples

[0056] Reference Figures 1 to 5 The anti-twist lifting device shown can effectively fix the external load and ensure the docking accuracy of the lifting. Figure 1 As shown, the anti-twist hanger is composed of an anti-twist device 1, a triangular hanger 2, a square frame 3 and four auxiliary hooks 4.

[0057] like Figure 2 As shown, the anti-twist device is composed of two single-ear joints 11, two groups of connecting rod assemblies 12, and a circular locking plate 13; the anti-twist device is connected to the helicopter joint 7 through the two single-ear joints 11, so that the anti-twist device 1 is installed on the helicopter belly frame beam.

[0058] In this specific example, the structures of the two connecting rod assemblies are exactly the same, and they are divided into an upper connecting rod and a lower connecting rod, which can reduce manufacturing costs and process complexity.

[0059] The circular locking plate 13 in this specific example is connected to the belly frame beam of the helicopter through two groups of connecting rod assemblies 12 and two single-ear joints 11. The circular locking plate 13 is provided with four groups of slots.

[0060] In this specific example, the triangular hanger 2 uses the stability principle of a triangle and adopts a triangular circular tube structure. Figure 3 As shown, the triangular hanger 2 is composed of an upper hanging ring 21, a tripod 22, and two lower hanging rings 23. The triangular hanger 2 is hooked on the cargo hook 8 on the aircraft through the upper hanging ring 21. Before the upper hanging ring 21 of the triangular hanger is hung on the cargo hook, the triangular hanger 2 needs to be inserted from the lower end of the circular lock plate 13 in the anti-twist device 1 and clamped into the clamping groove of the circular lock plate 13.

[0061] It should be noted that Figure 5 The cargo hook 8 belongs to the external hanging system of the helicopter. The triangular hanger 2 can transfer the main external hanging load of the cargo (including the gravity in the vertical direction, the aerodynamic force during the flight, etc.) to the cargo hook 8 on the aircraft; in addition, the tripod 22 of the triangular hanger 2 is inserted into the card slot of the circular lock plate 13 in the anti-twist device 1, and the card slot of the circular lock plate 13 can prevent the triangular hanger 2 from twisting, thereby realizing the anti-twist function of the cargo.

[0062] like Figure 5 As shown, the square frame 3 is installed on the two lower lifting rings of the triangular hanger 2, and the two lifting points of the triangular hanger can be increased to four lifting points; and an auxiliary hook 4 is installed under each of the four lifting points of the square frame 3, and the sling of the auxiliary hook has a length adjustment function: by adjusting the length of each sling 41 in the four auxiliary hooks 4, the initial posture of the cargo is adjusted to facilitate the lifting operation; wherein, the lower end of the auxiliary hook 4 is connected to the cargo, and before the cargo is hung on the auxiliary hook 4, the length of the sling 41 in the auxiliary hook 4 needs to be adjusted in advance.

[0063] In addition, the hook 42 at the lower end of the auxiliary hook 4 has an electrical release function, and the pilot and the operator can separate the cargo from the hook by pressing the release button on the aircraft during the lifting process.

[0064] Although the embodiments disclosed in the present invention are as above, the contents are only embodiments adopted to facilitate understanding of the present invention and are not intended to limit the present invention. Any technician in the field to which the present invention belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined in the attached claims.

Claims

1. An anti-torsion lifting device for helicopter lifting, characterized in that: include: An anti-twist device (1), a triangular hanger (2), a square frame (3) and an auxiliary hook (4); The anti-twist device (1) comprises: a circular locking plate (13), two groups of connecting rod assemblies symmetrically fixedly arranged above the circular locking plate (13), the top ends of the connecting rods at symmetrical positions in the two groups of connecting rod assemblies being fixedly connected to form two hanging points, and being used to fix and hang the two groups of connecting rod assemblies and the circular locking plate (13) on the belly frame beam of the helicopter through the two hanging points; The circular lock plate (13) is provided with at least one group of slots in the radial direction, which is used to engage the triangular hanger (2) in one group of slots of the circular lock plate (13), so that the top of the triangular hanger (2) is located between the two groups of connecting rod assemblies, and the two bottom ends symmetrically arranged in the triangular hanger (2) are located below the circular lock plate (13), and the square frame (3) is connected through the two bottom ends of the triangular hanger (2).

2. The anti-twist hoist for helicopter hoisting according to claim 1, characterized in that: Each group of connecting rod assemblies in the anti-twist device (1) comprises: an upper connecting rod of a V-shaped structure, a lower connecting rod of a ∧-shaped structure, the bottom end of the upper connecting rod is hinged to the top end of the lower connecting rod, the two bottom ends of the lower connecting rod are fixedly connected to a circular lock plate (13), the top end of one side of the upper connecting rod is fixedly connected to the top end of the upper connecting rod at a corresponding position of another connecting rod assembly through a connecting piece, so that two hanging points for hanging are formed by the two groups of connecting rod assemblies; each connecting piece is provided with a single-ear joint (11) for connecting to a helicopter joint (7).

3. The anti-torsion lifting device for helicopter hoisting according to claim 2, characterized in that: The circular locking disk (13) in the anti-twist device (1) comprises: an annular main body frame, a supporting structure arranged in the plane of the annular main body frame, the supporting structure being fixedly connected to the bottom end of the lower connecting rod, and a slot arranged radially along the circular locking disk (13) is formed through the gap between the supporting structures, so that the triangular hanger (2) is restricted to a fixed position in the circular locking disk (13) through the slot.

4. The anti-torsion lifting device for helicopter hoisting according to claim 3, characterized in that: The support structure in the circular lock disk (13) is configured as follows: a plurality of V-shaped or U-shaped support structures are evenly arranged along the circumference of the annular main frame, both ends of each of the V-shaped or U-shaped support structures are fixedly installed along the inner ring circumference of the annular main frame, and the V-shaped or U-shaped support structures are symmetrically arranged along the radial direction of the annular main frame to form a group of slots through two adjacent groups of support structures on both sides of the annular main frame in the radial direction.

5. The anti-twist hoist for helicopter hoisting according to claim 4, characterized in that: In the circular lock disk (13), four groups of slots are formed by eight V-shaped or U-shaped support structures; when the circular lock disk (13) is in use, the triangular hanger (2) is mounted by snapping one group of the slots, so that the triangular hanger (2) is snapped and fixed in the circular lock disk (13) in different radial directions.

6. The anti-twist hoist for helicopter hoisting according to any one of claims 1 to 5, characterized in that: The triangular hanger (2) comprises a tripod (22), an upper hanging ring (21) arranged at the top of the tripod (22), and two lower hanging rings (23) arranged at the bottom ends of both sides of the tripod (22), wherein the upper hanging ring (21) is connected to an onboard cargo hook (8), and each lower hanging ring (23) is connected to two ends of the square frame (3) via two connecting rods; The triangular hanger (2) is used to transfer the external load of the cargo to the cargo hook on the aircraft.

7. The anti-twist hoist for helicopter hoisting according to claim 6, characterized in that: Also includes: Auxiliary hanging components; The auxiliary hanging assembly comprises: 4 auxiliary hanging hooks (4); An auxiliary hook (4) is installed below each of the four lifting points of the square frame (3), and each of the auxiliary hooks (4) comprises a sling (41) and a hook (42). The hook (42) at the lower end of each auxiliary hook (4) is connected to the cargo.

8. The anti-twist hoist for helicopter hoisting according to claim 7, characterized in that: The auxiliary hanging assembly is used to adjust the initial posture of the cargo by adjusting the length of each sling (41) in the four auxiliary hanging hooks (4); The hook (42) in each auxiliary hook (4) is electrically connected to the onboard control system and is used to control the hook to open through the onboard control system to achieve the detachment of the cargo.

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