Helicopter rescue anti-rotation umbrella

Abstract

The utility model discloses a helicopter rescue anti-rotation umbrella which comprises an anti-rotation umbrella body, a rescue stretcher is installed on one side of the anti-rotation umbrella body, a hoisting safety rope is installed on the top of the rescue stretcher, a rescue rope is fixedly installed on the top of the hoisting safety rope, and a helicopter body is arranged above the rescue rope. A rescue rope is fixedly hung at the bottom of the helicopter body; an umbrella secondary rope is fixedly arranged on the rotation stopping umbrella body, a converging base is fixedly installed at the end, away from the rotation stopping umbrella body, of the umbrella secondary rope, and an umbrella main rope is fixedly connected to the end of the converging base. According to the helicopter rescue rotation-stopping umbrella, rotation of the stretcher is stopped by utilizing the wind catching principle of the rotation-stopping umbrella body; two hands of a lifeguard are liberated for other work; the rotation-stopping umbrella body can be taken out of the storage bag without additional operation of rescue workers, the energy of the workers is not occupied, and especially under the emergency condition, the hovering time of a helicopter is shortened, and the time for rescuing a patient is shortened.

Description

Technical Field

[0001] This utility model relates to the field of helicopter rescue technology, specifically a helicopter rescue anti-rotation parachute. Background Technology

[0002] When a stretcher and rescuer are hoisted by a helicopter, they are affected by the downwash airflow generated by the helicopter's main rotor. This effect manifests primarily as uncontrollable lateral rotation of the stretcher due to uneven downwash airflow. If this uncontrollable rotation is not controlled in time, it will intensify, potentially leading to further injury or threatening flight safety. To overcome this, current methods generally involve using a long rope to pull one end of the stretcher, while ground personnel pull the other end to prevent rotation. The disadvantage is that ground personnel may accidentally let go, leaving the long rope only attached to the stretcher. When the stretcher approaches the helicopter door, the rope attached to the stretcher poses a significant safety threat to the main rotor or tail rotor. In addition, the long rope may become entangled with other objects, affecting safety. Another method involves using a person to manipulate a sling to control rotation. However, if only the stretcher needs to be hoisted onto the aircraft during the hoisting process, and the injured person cannot lie on the stretcher to manipulate the anti-rotation sail, the anti-rotation sail will lose its function, and the stretcher will continue to rotate.

[0003] To solve the above problems, after searching, Chinese patent application number 202120418523.3 was found, which discloses a rescue stretcher anti-rotation sail. The paper proposes that if no lifeguards accompany the stretcher onto the aircraft, the anti-rotation sail can be fixed to the symmetrical slings of the stretcher after it is installed on the ground. When the stretcher is hoisted, the airflow can be obtained by the aircraft to accelerate forward and prevent rotation.

[0004] Although the aforementioned device can prevent the hoisting load from rotating during the air transport of the wounded, in actual use, the anti-rotation sail needs to be operated and installed on the hoisting rope by rescue personnel, which takes up manpower and, especially in emergency situations, delays the aircraft's takeoff time and increases the time required to rescue the patient. Utility Model Content

[0005] The purpose of this invention is to provide a helicopter rescue anti-rotation parachute to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, a helicopter rescue anti-rotation parachute is provided, comprising an anti-rotation parachute body, a rescue stretcher installed on one side of the anti-rotation parachute body, a hoisting safety rope installed on the top of the rescue stretcher, a rescue rope fixedly installed on the top of the hoisting safety rope, the helicopter body above the rescue rope, and the rescue rope fixedly suspended at the bottom of the helicopter body; a secondary parachute rope is fixedly installed on the anti-rotation parachute body, a confluence seat is fixedly installed at the end of the secondary parachute rope away from the anti-rotation parachute body, a main parachute rope is fixedly connected to the end of the confluence seat, and a positioning cylinder is fixedly installed at the end of the main parachute rope away from the confluence seat, the positioning cylinder being sleeved and fixed to the outer circumference of the metal frame.

[0007] Preferably, the anti-rotation umbrella body includes umbrella petals, mounting holes, mounting rings, secondary umbrella ropes, converging seats, main umbrella ropes, positioning cylinders, and storage bags; the umbrella petals are evenly arranged in ten groups, and mounting holes are opened at the bottom of each of the ten groups of umbrella petals.

[0008] Preferably, each of the ten sets of mounting holes is fixedly equipped with a mounting ring, and a secondary parachute rope is installed at the bottom of the mounting ring. The ends of the ten sets of secondary parachute ropes are gathered and fixed on the confluence seat and then fixed on the rescue stretcher through the main parachute rope and the positioning cylinder; the confluence seat is cylindrical.

[0009] Preferably, the rescue stretcher includes a metal frame, a fixing base, a safety rope tension section, a stabilizing grip, and Oxford cloth; Oxford cloth is fixedly installed on the metal frame, and multiple sets of fixing bases are fixedly installed on the metal frame; a storage bag is installed at the bottom of the Oxford cloth, and a zipper is installed at the opening of the storage bag.

[0010] Preferably, each of the multiple fixed bases is equipped with a safety rope tension section, which is located at the bottom of the hoisting safety rope, and a stabilizing gripper is fixedly installed on the outer circumference of the safety rope tension section.

[0011] Preferably, the stabilizing gripper includes a limiting plate, an anti-slip handle, and anti-slip plates; the anti-slip handle is a cylindrical structure made of rubber, and the anti-slip handle is fixedly sleeved on the outer circumference of the stress section of the safety rope. Multiple sets of anti-slip plates are evenly fixed on the outer circumference of the anti-slip handle, and the anti-slip plates are arranged in a ring, with the distance between two adjacent sets of anti-slip plates being the same.

[0012] Preferably, the top and bottom of the anti-slip handle are fixedly provided with limiting pieces, which are circular and have a diameter larger than that of the anti-slip handle.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model effectively prevents hand slippage during gripping through its anti-slip handle, ensuring reliable grip on the safety rope even in harsh environments such as wetness and oil. It also prevents hands from accidentally sliding into areas they shouldn't touch during operation, reducing the possibility of misoperation and improving the accuracy and safety of operation. At the same time, it provides a clear boundary and support point for the operator's hands, improving stability during prolonged gripping.

[0015] 2. This utility model stops the rotation of a stretcher suspended outside the cabin by utilizing the forward speed of the aircraft; it stops the stretcher's rotation by utilizing the wind-catching principle of the anti-rotation parachute body; it frees up the rescuer's hands to perform other tasks; and it requires no additional operation from the rescue personnel, who can simply take the anti-rotation parachute body out of the storage bag, without taking up personnel's energy. Especially in emergency situations, it reduces the helicopter's hovering time and shortens the time for rescuing patients. Attached Figure Description

[0016] Figure 1 This is a simplified structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the anti-rotation umbrella body and its installation structure according to the present invention.

[0018] Figure 3 for Figure 2 A bottom view;

[0019] Figure 4 for Figure 2 Top view;

[0020] Figure 5 for Figure 2 Front view.

[0021] Numbered in the diagram: 1. Helicopter body; 2. Rescue rope; 3. Hoisting safety rope; 4. Rescue stretcher; 41. Metal frame; 42. Fixing seat; 43. Safety rope tension section; 44. Stabilizing grip; 441. Limiting plate; 442. Anti-slip handle; 443. Anti-slip plate; 45. Oxford cloth; 5. Anti-rotation umbrella body; 51. Umbrella petal; 52. Mounting hole; 53. Mounting ring; 54. Secondary parachute rope; 55. Meeting seat; 56. Main parachute rope; 57. Positioning cylinder; 58. Storage bag. Detailed Implementation

[0022] Please see Figures 1-5This utility model provides a helicopter rescue anti-rotation parachute, including an anti-rotation parachute body 5, a rescue stretcher 4 installed on one side of the anti-rotation parachute body 5, a hoisting safety rope 3 installed on the top of the rescue stretcher 4, a rescue rope 2 fixedly installed on the top of the hoisting safety rope 3, a helicopter body 1 above the rescue rope 2, and the rescue rope 2 fixedly suspended at the bottom of the helicopter body 1; a secondary parachute rope 54 is fixedly installed on the anti-rotation parachute body 5, a converging seat 55 is fixedly installed at the end of the secondary parachute rope 54 away from the anti-rotation parachute body 5, a main parachute rope 56 is fixedly connected to the end of the converging seat 55, and a positioning cylinder 57 is fixedly installed at the end of the main parachute rope 56 away from the converging seat 55, and the positioning cylinder 57 is sleeved and fixed on the outer circumference of the metal frame 41.

[0023] Working principle: As the helicopter body 1 flies forward, the airflow impacts the interior of the anti-rotation parachute body 5, causing it to expand and inflate. The anti-rotation parachute body 5 absorbs the wind generated by the helicopter body 1's forward flight, thus stopping the rotating rescue stretcher 4. This device, operating without human control, utilizes the helicopter's forward speed to stop the stretcher's rotation suspended outside the cabin. It uses the anti-rotation parachute body 5's wind-catching principle to stop the stretcher's rotation. If uncontrollable factors prevent rescuers from being hoisted onto the aircraft with the stretcher during a rescue operation, the anti-rotation parachute body 5 can be deployed for rescue work. When rescuers are hoisted with the stretcher, their hands are also freed. For other tasks, such as simple rescue work for patients, the anti-rotation parachute body 5 can be used without additional operation by rescue personnel. Simply take the anti-rotation parachute body 5 out of the storage bag 58. This does not require personnel's attention, especially in emergency situations, reducing helicopter hovering time and shortening the time for rescuing patients. Since rescuers need to assist in getting the stretcher into the cabin during rescue operations, their hands need to be temporarily released from this device. Therefore, this device also considers the firmness of the connection with the stretcher, so that it will not detach from the stretcher due to letting go or losing control, thus affecting the safety of helicopter flight. Compared with existing technologies, this technology is safe, efficient, and reasonable, and can better solve the problem of stretcher rotation when no one is operating it.

[0024] When not in use, the anti-rotation umbrella body 5 can be folded up and stored in the storage bag 58 located at the bottom of the Oxford cloth 45, and secured by the zipper at the end of the storage bag 58 to prevent the anti-rotation umbrella body 5 from falling off, making it convenient for the next use. A stabilizing grip 44 is provided on the tension section 43 of the safety rope at the bottom of the hoisting safety rope 3. The stabilizing grip 44 is equipped with a limit plate 441, an anti-slip handle 442, and anti-slip plates 443. The limit plate 441 restricts the position of the operator's hands, preventing accidental slippage to areas that should not be touched during operation, thereby reducing the possibility of misoperation and improving the accuracy and safety of operation. It also provides a clear boundary and support point for the operator's hands. Multiple sets of anti-slip plates 443 are evenly fixed on the outer circumference of the anti-slip handle 442 on the stabilizing grip 44, making it more stable when gripping the stabilizing grip 44, especially when encountering turbulence during helicopter flight, helping the operator maintain focus. Effective control of the entire rope; the anti-slip handle 442 design significantly increases the friction between the operator's hand and the stabilizing grip 44; during hoisting and rescue operations, operators need to ensure a firm grip on the safety rope. The anti-slip handle 442 effectively prevents slippage during gripping, ensuring reliable control even in harsh environments such as wet or oily conditions; multiple anti-slip pads 443 are provided on the anti-slip handle 442, which deform under force to conform to the shape of the human hand, reducing hand fatigue and allowing the operator to grip the stabilizing grip 44 more comfortably and for longer periods, which is beneficial for prolonged rescue operations; the anti-slip pads 443 further enhance the overall anti-slip performance of the stabilizing grip 44; numerous anti-slip pads 443 are distributed in different parts of the stabilizing grip 44, working together with the anti-slip handle 442 to provide more comprehensive anti-slip protection for the operator; especially when it is necessary to pull or fix the rope urgently, the anti-slip pads ensure that the operator's hands have sufficient friction to complete the operation.

[0025] In a preferred embodiment, the anti-rotation umbrella body 5 includes umbrella petals 51, mounting holes 52, mounting rings 53, secondary umbrella ropes 54, converging seats 55, main umbrella ropes 56, positioning cylinders 57, and storage bags 58; the umbrella petals 51 are evenly arranged in ten groups, and each of the ten groups of umbrella petals 51 has mounting holes 52 at its bottom.

[0026] In a preferred embodiment, each of the ten sets of mounting holes 52 is fixedly provided with a mounting ring 53, and a secondary parachute rope 54 is installed at the bottom of the mounting ring 53. The ends of the ten sets of secondary parachute ropes 54 are gathered and fixed on the confluence seat 55 and fixed on the rescue stretcher 4 through the main parachute rope 56 and the positioning cylinder 57; the confluence seat 55 is cylindrical.

[0027] As a preferred embodiment, the rescue stretcher 4 includes a metal frame 41, a fixing base 42, a safety rope tension section 43, a stabilizing grip 44, and an Oxford cloth 45; the Oxford cloth 45 is fixedly installed on the metal frame 41, and multiple sets of fixing bases 42 are fixedly installed on the metal frame 41; a storage bag 58 is installed at the bottom of the Oxford cloth 45, and a zipper is installed at the opening of the storage bag 58.

[0028] As a preferred embodiment, a safety rope bearing section 43 is fixedly installed on each of the multiple sets of fixed bases 42. The safety rope bearing section 43 is located at the bottom of the hoisting safety rope 3, and a stabilizing gripper 44 is fixedly installed on the outer circumference of the safety rope bearing section 43.

[0029] In a preferred embodiment, the stabilizing gripper 44 includes a limiting plate 441, an anti-slip handle 442, and anti-slip plates 443. The anti-slip handle 442 is a cylindrical structure made of rubber. The anti-slip handle 442 is fixedly sleeved on the outer circumference of the stress-bearing section 43 of the safety rope. Multiple sets of anti-slip plates 443 are evenly fixed on the outer circumference of the anti-slip handle 442. The anti-slip plates 443 are arranged in a ring, and the distance between two adjacent sets of anti-slip plates 443 is the same.

[0030] As a preferred embodiment, the top and bottom of the anti-slip handle 442 are fixedly provided with limiting pieces 441, which are circular and have a diameter larger than that of the anti-slip handle 442.

Claims

1. A helicopter rescue anti-rotation parachute, comprising an anti-rotation parachute body (5), characterized in that: A rescue stretcher (4) is installed on one side of the anti-rotation parachute body (5). A hoisting safety rope (3) is installed on the top of the rescue stretcher (4). A rescue rope (2) is fixedly installed on the top of the hoisting safety rope (3). The helicopter body (1) is above the rescue rope (2). The rescue rope (2) is fixedly suspended at the bottom of the helicopter body (1). A secondary parachute rope (54) is fixedly installed on the anti-rotation parachute body (5). A meeting seat (55) is fixedly installed at the end of the secondary parachute rope (54) away from the anti-rotation parachute body (5). A main parachute rope (56) is fixedly connected to the end of the meeting seat (55). A positioning cylinder (57) is fixedly installed at the end of the main parachute rope (56) away from the meeting seat (55). The positioning cylinder (57) is sleeved and fixed on the outer circumference of the metal frame (41).

2. The helicopter rescue anti-rotation parachute according to claim 1, characterized in that: The anti-rotation umbrella body (5) includes umbrella petals (51), mounting holes (52), mounting rings (53), secondary umbrella ropes (54), confluence seats (55), main umbrella ropes (56), positioning cylinders (57), and storage bags (58); the umbrella petals (51) are evenly arranged in ten groups, and mounting holes (52) are opened at the bottom of each of the ten groups of umbrella petals (51).

3. The helicopter rescue anti-rotation parachute according to claim 2, characterized in that: The ten sets of mounting holes (52) are all fixedly equipped with mounting rings (53). The bottom of the mounting rings (53) is equipped with parachute ropes (54). The ends of the ten sets of parachute ropes (54) are gathered and fixed on the confluence seat (55) and fixed on the rescue stretcher (4) through the main parachute rope (56) and the positioning cylinder (57). The confluence seat (55) is cylindrical.

4. The helicopter rescue anti-rotation parachute according to claim 1, characterized in that: The rescue stretcher (4) includes a metal frame (41), a fixing seat (42), a safety rope tension section (43), a stabilizing grip (44), and an Oxford cloth (45); the Oxford cloth (45) is fixedly installed on the metal frame (41), and multiple sets of fixing seats (42) are fixedly installed on the metal frame (41); a storage bag (58) is installed at the bottom of the Oxford cloth (45), and a zipper is installed at the opening of the storage bag (58).

5. A helicopter rescue anti-rotation parachute according to claim 4, characterized in that: Safety rope tension section (43) is fixedly installed on multiple sets of fixed seats (42). The safety rope tension section (43) is located at the bottom of the hoisting safety rope (3). A stabilizing gripper (44) is fixedly installed on the outer circumference of the safety rope tension section (43).

6. A helicopter rescue anti-rotation parachute according to claim 5, characterized in that: The stabilizing gripper (44) includes a limiting plate (441), an anti-slip handle (442), and anti-slip plates (443). The anti-slip handle (442) is a cylindrical structure made of rubber. The anti-slip handle (442) is fixedly sleeved on the outer circumference of the stress section (43) of the safety rope. Multiple sets of anti-slip plates (443) are evenly fixed on the outer circumference of the anti-slip handle (442). The anti-slip plates (443) are arranged in a ring, and the distance between two adjacent sets of anti-slip plates (443) is consistent.

7. A helicopter rescue anti-rotation parachute according to claim 6, characterized in that: The top and bottom of the anti-slip handle (442) are fixedly provided with limiting pieces (441). The limiting pieces (441) are circular and the diameter of the limiting pieces (441) is larger than the diameter of the anti-slip handle (442).

Images