A rope counterweight device for helicopter rescue

Abstract

The present invention discloses a rope counterweight device for helicopter rescue, including a rescue rope, on which a hand-controlled descender, a foot stepping structure and a counterweight structure are sequentially arranged from top to bottom. The foot stepping structure includes a pair of side plates, a stepping rod and a pair of pedals. The counterweight structure includes a sleeve and a counterweight roll. In the present invention, through the arranged foot stepping structure and counterweight structure, when the feet of the rescue personnel step on the foot stepping structure, the rescue rope is restricted within the foot stepping structure, preventing the feet of the rescue personnel from being entangled by the rescue rope. At the same time, under the action of the gravity of the counterweight structure, the rescue rope will maintain a vertical state under the feet of the rescue personnel, further preventing the rescue rope from being entangled around the feet of the rescue personnel. At the same time, as the rescue personnel descend along the rescue rope, the counterweight structure can straighten the rescue rope, preventing the occurrence of entanglement of multiple rescue ropes.

Description

Technical Field

[0001] The present invention belongs to the technical field of rappelling equipment, and specifically relates to a rope counterweight device for helicopter rescue. Background Art

[0002] Helicopter rescue is an emergency rescue using a helicopter as a transport vehicle. The helicopter can reach rescue sites that are inaccessible by water or land more quickly, and carry out search and rescue, material transportation, air command, etc. When carrying out helicopter rescue work, if there is no site for the helicopter to directly land at the rescue location, rescue personnel usually use a rope to perform rappelling operations from the helicopter.

[0003] CN201821049412.4 discloses a helicopter rescue rope counterweight system. This patent increases the weight under the rope by setting a pedal, a connecting rod, a left splint, and a right splint, and increases the stability when the lower end of the rope is in a suspended state, thus facilitating the progress of rescue work. However, during the rappelling process of rescue personnel, the helicopter propeller will blow out a relatively strong airflow when working, causing the rope hanging below the rescue personnel to swing under the action of the airflow, resulting in the rope being wound around the foot position of the rescue personnel, so that the rescue personnel are easily cut by the rope during the descent. At the same time, if multiple rescue personnel perform rappelling work at one time, the ropes below multiple ropes will also be wound together due to the blowing of the airflow, causing trouble to the rappelling operations of the rescue personnel.

[0004] The information disclosed in this background art section is only intended to increase the overall understanding of the present invention and should not be regarded as an admission or any form of suggestion that this information constitutes prior art known to those of ordinary skill in the art. Summary of the Invention

[0005] The purpose of the present invention is to provide a rope counterweight device for helicopter rescue to solve the above problems of the prior art.

[0006] To achieve the above purpose, the present invention provides a rope counterweight device for helicopter rescue, including a rescue rope. A hand-controlled descender is sleeved on the rescue rope. A hook ring is arranged at the bottom end of the hand-controlled descender. A foot stepping structure is arranged below the hand-controlled descender. A counterweight structure is arranged below the foot stepping structure. The rescue rope passes through the hand-controlled descender, the foot stepping structure, and the counterweight structure in sequence. The rappelling rescue personnel are hung on the hand-controlled descender through a rope, and the feet of the rescue personnel are lapped and stepped on the foot stepping structure.

[0007] In the technical solution of the present invention, the foot pedal structure includes a pair of side plates, a pedal rod passing through the two side plates and fixedly connected to the side plates, and a pair of pedals respectively sleeved at the head and tail ends of the pedal rod and rotatably connected to the pedal rod.

[0008] In the technical solution of the present invention, a gap is formed between the two side plates, a connecting block is fixed between the rear end faces of the two side plates, a hanging ring is fixed on the outer end face of the connecting block, and a plurality of pulleys are rotatably connected between the two side plates. The rescue rope sequentially bypasses the surfaces of each pulley.

[0009] In the technical solution of the present invention, the pedal rod has a cylindrical rod structure. The pedal rod sequentially penetrates the side plates and the connecting block, and a pair of fixing rings are fixed on the outer peripheral surfaces at the head and tail ends of the pedal rod.

[0010] In the technical solution of the present invention, a sleeve hole is formed on the side end face of the pedal. The pedal rod passes through the sleeve hole, and the pedal is clamped between a pair of fixing rings.

[0011] In the technical solution of the present invention, the counterweight structure includes a sleeve sleeved on the outer periphery of the rescue rope and a counterweight roll wound on the outer peripheral surface of the sleeve.

[0012] In the technical solution of the present invention, the sleeve has a hollow cylindrical structure. Convex edges are integrally formed at the edges of the top and bottom ends of the sleeve. A through slit is formed on the outer peripheral surface of the sleeve. The rescue rope can enter the inside of the sleeve from the outside of the sleeve through the through slit. A sleeve ring is hung at the top end of the sleeve.

[0013] In the technical solution of the present invention, the outer shell of the counterweight roll is made of cloth material. Sand is filled inside the counterweight roll. A hook-and-loop fastener with a fuzzy surface is tightly sewn on the front surface of the counterweight roll, and a hook-and-loop fastener with a prickly surface is tightly sewn on the back surface of the counterweight roll. When the counterweight roll is wound around the outside of the sleeve, the hook-and-loop fastener with a prickly surface is tightly adhered to the hook-and-loop fastener with a fuzzy surface.

[0014] In the technical solution of the present invention, a first pull rope is arranged between the manual descender and the foot pedal structure, and a second pull rope is arranged between the foot pedal structure and the counterweight structure. Hooks are tied to the head and tail ends of the first pull rope and the second pull rope. The top end of the first pull rope is hung on the hook ring through the hook, the bottom end of the first pull rope is hung on the hanging ring through the hook, the top end of the second pull rope is hung on the hanging ring through the hook, and the bottom end of the second pull rope is hung on the sleeve ring through the hook.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. In the present invention, by providing a foot pedal structure below the hand-controlled descender and using a first pulling rope to connect the hand-controlled descender with the foot pedal structure, when a rescuer descends from a rescue rope using the hand-controlled descender, the feet of the rescuer can step on two pedals of the foot pedal structure, and the rescue rope can be restricted within the foot pedal structure, preventing the situation that the rescue rope winds around the feet of the rescuer during the descending process.

[0017] 2. In the present invention, by providing a counterweight structure and using a second pulling rope to connect the counterweight structure with the foot pedal structure, under the action of the gravity of the counterweight structure, the rescue rope passing through the counterweight structure will remain in a vertical state under the action of the counterweight structure, preventing the situation that the airflow blown by the helicopter propeller lifts the drooping rescue rope and winds it around the feet of the rescuer. At the same time, as the rescuer descends along the rescue rope, the counterweight structure can smooth out the rescue rope, preventing the occurrence of winding phenomena of multiple rescue ropes. Brief Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a schematic diagram of the use of the present invention;

[0020] Figure 3 is a structural diagram of the foot pedal structure in the present invention;

[0021] Figure 4 is an exploded view of the foot pedal structure in the present invention;

[0022] Figure 5 is a structural diagram of the counterweight structure in the present invention;

[0023] Figure 6 is a structural diagram of the sleeve in the present invention;

[0024] Figure 7 is a structural diagram of the counterweight roll in the present invention;

[0025] Figure 8 is an unfolded schematic diagram of the counterweight roll in the present invention.

[0026] Description of the Reference Numerals:

[0027] 1 - rescue rope;

[0028] 2 - hand-controlled descender; 21 - hook

[0029] 3 - Foot - stepping structure; 31 - Side plate; 311 - Connecting block; 312 - Hanging loop; 313 - Pulley; 32 - Stepping rod; 321 - Fixed loop; 33 - Pedal; 331 - Sleeve hole;

[0030] 4 - Counterweight structure; 41 - Sleeve; 411 - Convex edge; 412 - Through - slot; 413 - Collar; 42 - Counterweight roll; 421 - Fluffy - side Velcro; 422 - Prickly - side Velcro;

[0031] 5 - First pull rope;

[0032] 6 - Second pull rope;

[0033] 7 - Hook. Detailed implementation manners

[0034] Combined with the accompanying drawings below, the detailed implementation manners of the present invention will be described in detail. However, it should be understood that the protection scope of the present invention is not limited by the detailed implementation manners.

[0035] Unless otherwise clearly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "having" etc. will be understood to include the stated elements or components, without excluding other elements or other components.

[0036] Referring to Figures 1-8 In the present invention, a helicopter rescue rope counterweight device includes a rescue rope 1. A hand - controlled descender 2 is sleeved on the rescue rope 1. The hand - controlled descender 2 refers to a protector used for emergency landing, escape and evacuation, fire fighting operations, and protecting operators during rescue. The hand - controlled descender 2 is equipped with an automatic braking system to prevent danger caused by the user's unconscious operation during descent. It can automatically brake on a single rope. When the user's weight is applied to the hand - controlled descender 2 and the control handle is released, the automatic braking system will start to operate. Pulling the rope tail below the hand - controlled descender 2 can control the descent speed.

[0037] In the present invention, a foot - stepping structure 3 is arranged below the hand - controlled descender 2, and a counterweight structure 4 is arranged below the foot - stepping structure 3. The rescue rope 1 passes through the hand - controlled descender 2, the foot - stepping structure 3, and the counterweight structure 4 in sequence. The rescue personnel performing rappelling are hung on the hand - controlled descender 2 by the rope, and the feet of the rescue personnel are lapped and stepped on the foot - stepping structure 3.

[0038] Specifically, the foot pedal structure 3 includes a pair of side plates 31, a pedal rod 32 that penetrates through the two side plates 31 and is fixedly connected to the side plates 31, and a pair of pedals 33 that are respectively sleeved on the head and tail ends of the pedal rod 32 and are rotatably connected to the pedal rod 32. There is a gap formed between the two side plates 31. A connecting block 311 is fixed between the rear end faces of the two side plates 31. A number of pulleys 313 are rotatably connected between the two side plates 31. The rescue rope 1 sequentially bypasses the surfaces of each pulley 313. Under the restriction of the pulleys 313, the rescue rope 1 is restricted inside the two side plates 31. When the foot pedal structure 3 is stressed, the rescue rope 1 will drive the pulley 313 to rotate under the action of friction, so that the foot pedal structure 3 can move along the rescue rope 1.

[0039] Furthermore, the pedal rod 32 has a cylindrical rod structure. The pedal rod 32 sequentially penetrates through the side plates 31 and the connecting block 311. A pair of fixing rings 321 are fixed on the outer peripheral surfaces of the head and tail ends of the pedal rod 32. A sleeve hole 331 is formed on the side end face of the pedal 33. The pedal rod 32 passes through the sleeve hole 331. The pedal 33 is clamped between the pair of fixing rings 321, so that the pedal 33 can rotate on the pedal rod 32 while being restricted on the pedal rod 32 by the fixing rings 321, preventing the pedal 33 from disengaging from the pedal rod 32.

[0040] In addition, a first pull rope 5 is provided between the hand-controlled descender 2 and the foot pedal structure 3. Hooks 7 are respectively connected to the head and tail ends of the first pull rope 5. A hook ring 21 is provided at the bottom end of the hand-controlled descender 2. A hanging ring 312 is fixed on the outer side end face of the connecting block 311. The top end of the first pull rope 5 is hung on the hook ring 21 through the hook 7, and the bottom end of the first pull rope 5 is hung on the hanging ring 312 through the hook 7, so that the foot pedal structure 3 is hung on the bottom of the hand-controlled descender 2 through the first pull rope 5. When the rescuer uses the hand-controlled descender 2 for rappelling, the rescuer's body is hung on the hand-controlled descender 2. At this time, the rescuer can respectively place both feet on the two pedals 33, so that the rescue rope 1 passing through the foot pedal structure 3 is restricted inside the foot pedal structure 3, preventing the situation that the rescue rope 1 entangles the feet during the rescuer's descent.

[0041] In the above solution, the counterweight structure 4 includes a sleeve 41 sleeved on the outer periphery of the rescue rope 1 and a counterweight coil 42 wound on the outer peripheral surface of the sleeve 41.

[0042] Specifically, the sleeve 41 has a hollow cylindrical structure. A through slot 412 is formed on the outer peripheral surface of the sleeve 41. The rescue rope 1 can enter the inside of the sleeve 41 from the outside of the sleeve 41 through the through slot 412, achieving the purpose of installing the sleeve 41 on the rescue rope 1.

[0043] Furthermore, the outer shell of the counterweight roll 42 is made of cloth material, the inside of the counterweight roll 42 is filled with sand, a hook-and-loop fastener with a plush surface 421 is tightly sewn on the front of the counterweight roll 42, and a hook-and-loop fastener with a prickly surface 422 is tightly sewn on the back of the counterweight roll 42. When the counterweight roll 42 is wound around the outside of the sleeve 41, the hook-and-loop fastener with a prickly surface 422 is tightly adhered to the hook-and-loop fastener with a plush surface 421. After the sleeve 41 is sleeved on the outside of the rescue rope 1, the counterweight roll 42 can be wound around the outside of the sleeve 41, so that the rescue rope 1 is restricted inside the sleeve 41 by the counterweight roll 42.

[0044] In addition, convex edges 411 are integrally formed at both the top and bottom edges of the sleeve 41. After the counterweight roll 42 is wound around the outside of the sleeve 41, the protruding convex edges 411 will block the downward fall of the counterweight roll 42, thereby preventing the counterweight roll 42 from falling off the sleeve 41.

[0045] It should be noted that a second pull rope 6 is provided between the foot stepping structure 3 and the counterweight structure 4. Hooks 7 are tied to both the head and the end of the second pull rope 6. A hanging ring 413 is hung on the top end of the sleeve 41. The top end of the second pull rope 6 is hung on the hanging ring 312 through the hook 7, and the bottom end of the second pull rope 6 is hung on the hanging ring 413 through the hook 7, so that the foot stepping structure 3 and the counterweight structure 4 are connected by the second pull rope 6. Under the action of the gravity of the counterweight roll 42, the rescue rope 1 between the foot stepping structure 3 and the counterweight structure 4 can be kept in a vertical state, preventing the airflow blown by the helicopter propeller from lifting the hanging rescue rope 1 and winding it around the feet of the rescue personnel. At the same time, as the rescue personnel descend along the rescue rope 1, the counterweight structure 4 can smooth out the rescue rope 1, preventing the occurrence of entanglement of multiple rescue ropes 1.

[0046] The working principle of the rope counterweight device for helicopter rescue of the present invention is specifically as follows: First, when the helicopter arrives at the rescue site and is ready for the rappelling work of the rescue personnel, the rescue personnel successively install the hand-controlled descender 2 and the foot stepping structure 3 on the rescue rope 1 and insert the rescue rope 1 into the inner side of the sleeve 41 from the through slot 412, and then wind the counterweight roll 42 around the outer side of the sleeve 41, so that the counterweight roll 42 is installed on the sleeve 41. Then the rescue personnel use the hand-controlled descender 2 to rappel, and the body of the rescue personnel is hooked on the hand-controlled descender 2. At this time, the rescue personnel can place both feet on the two pedals 33 respectively, so that the rescue rope 1 passing through the foot stepping structure 3 is restricted within the foot stepping structure 3, preventing the situation that the rescue rope 1 is wound around the feet during the descent of the rescue personnel. Finally, during the rappelling process of the rescue personnel, the counterweight structure 4 will always drive the rescue rope 1 between the foot stepping structure 3 and the counterweight structure 4 to be in a vertical state under the action of gravity, preventing the airflow blown by the helicopter propeller from lifting the drooping rescue rope 1 and winding it around the feet of the rescue personnel. At the same time, as the rescue personnel descend along the rescue rope 1, the counterweight structure 4 can straighten the rescue rope 1, preventing the occurrence of entanglement of multiple rescue ropes 1.

[0047] The foregoing description of the specific exemplary embodiments of the present invention is for purposes of illustration and exemplification. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is obvious that many changes and variations are possible in light of the above teaching. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the invention and its practical applications, so that those skilled in the art can implement and utilize the various different exemplary embodiments of the invention, as well as various different selections and changes. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A rope counterweight device for helicopter rescue, comprising a rescue rope (1). It is characterized in that: A hand-controlled descender (2) is sleeved on the rescue rope (1). A hook ring (21) is arranged at the bottom end of the hand-controlled descender (2). A foot stepping structure (3) is arranged below the hand-controlled descender (2). A counterweight structure (4) is arranged below the foot stepping structure (3). The rescue rope (1) sequentially passes through the hand-controlled descender (2), the foot stepping structure (3), and the counterweight structure (4). The rescue personnel abseiling is hung on the hand-controlled descender (2) through the rope, and the feet of the rescue personnel are lapped and stepped on the foot stepping structure (3). The foot stepping structure (3) includes a pair of side plates (31), a stepping rod (32) penetrating through the two side plates (31) and fixedly connected with the side plates (31), and a pair of pedals (33) respectively sleeved on the head and tail ends of the stepping rod (32) and rotatably connected with the stepping rod (32). A gap is formed between the two side plates (31). A connecting block (311) is fixed between the rear end faces of the two side plates (31). A hanging ring (312) is fixed on the outer end face of the connecting block (311). A plurality of pulleys (313) are rotatably connected between the two side plates (31). The rescue rope (1) sequentially bypasses the surfaces of each pulley (313). The counterweight structure (4) includes a sleeve (41) sleeved on the outer periphery of the rescue rope (1) and a counterweight roll (42) wound on the outer peripheral surface of the sleeve (41). The sleeve (41) has a hollow cylindrical structure. Convex edges (411) are integrally formed at the top and bottom edge ends of the sleeve (41). A through slot (412) is formed on the outer peripheral surface of the sleeve (41). The rescue rope (1) can enter the inside of the sleeve (41) from the outside of the sleeve (41) through the through slot (412). A collar (413) is hung at the top end of the sleeve (41). A first pull rope (5) is arranged between the hand-controlled descender (2) and the foot stepping structure (3). A second pull rope (6) is arranged between the foot stepping structure (3) and the counterweight structure (4). Hooks (7) are tied to the head and tail ends of the first pull rope (5) and the second pull rope (6). The top end of the first pull rope (5) is hung on the hook ring (21) through the hook (7). The bottom end of the first pull rope (5) is hung on the hanging ring (312) through the hook (7). The top end of the second pull rope (6) is hung on the hanging ring (312) through the hook (7). The bottom end of the second pull rope (6) is hung on the collar (413) through the hook (7).

2. The rope counterweight device for helicopter rescue according to claim 1, It is characterized in that: The stepping rod (32) has a cylindrical rod-like structure. The stepping rod (32) sequentially penetrates through the side plate (31) and the connecting block (311). A pair of fixing rings (321) are fixed on the outer peripheral surfaces at both the head and tail ends of the stepping rod (32).

3. The rope counterweight device for helicopter rescue according to claim 2, characterized in that: A sleeve hole (331) is formed on the side end surface of the pedal (33). The stepping rod (32) passes through the sleeve hole (331), and the pedal (33) is clamped between a pair of fixing rings (321).

4. The rope counterweight device for helicopter rescue according to claim 1, characterized in that: The outer shell of the counterweight roll (42) is made of cloth material. The inside of the counterweight roll (42) is filled with sand. A loop fastener (421) is tightly sewn on the front surface of the counterweight roll (42), and a hook fastener (422) is tightly sewn on the back surface of the counterweight roll (42). When the counterweight roll (42) is wound around the outside of the sleeve (41), the hook fastener (422) is tightly adhered to the loop fastener (421).

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