A fast elevator installed on a helicopter

Abstract

The present application relates to a rapid elevator installed on a helicopter, which uses a soft wire rope ladder used for an escape ladder as a main ladder, a ladder column made of soft steel wire ropes, and galvanized steel pipes or aluminum alloy sticks with a diameter of about 2 cm and a length of about 30-40 cm as steps. It is a rapid circulation elevator that uses power to quickly transport personnel, can solve the problem that a single rope descent cannot descend continuously, quickly, and cyclically, and can facilitate ground personnel to board the helicopter again.

Description

[0001] 1. Technical field: This elevator is a fast-lifting ladder made of soft steel wire rope. It is installed on a helicopter and uses power to quickly transport troops or quickly transport or withdraw soldiers or firefighters and rescue trapped people during disaster relief. It is a soft steel wire rope ladder that needs to be lowered, braked, controlled and retracted by power when in use. It can deliver or withdraw 60 well-trained airborne troops or firefighters to withdraw ground personnel for disaster relief every minute.

[0002] 2. Background technology: At present, soldiers are transported from helicopters by descending with a single rope; that is, a rope is used to slide down with a pulley, and at most two people can slide down from one rope. Not only is the number of people descending small and slow, but also the ground personnel or the personnel who have descended cannot return to the aircraft; it is not possible to descend continuously, quickly, and cyclically and return to the aircraft; the emergency evacuation ladder is installed on a hundred-story building, which does not require power and automatically descends under load. It is an emergency emergency evacuation of trapped people. It is a non-retractable wire rope soft ladder that cannot be rolled up, and after the trapped people land on the ground, there is a continuous horizontal conveying system, which will continue to transport the trapped people horizontally for several meters, and prevent the upper person who descends later from stepping on the horizontal conveying system of the person who descended earlier; but this technology cannot be directly installed on a helicopter; due to the need, this soft ladder should be improved and installed on a helicopter, and a fast cyclic elevator that continuously transports soldiers and firefighters downward or withdraws ground personnel and trapped people in floods, etc.;

[0003] 3. Invention content: The present application uses the soft wire rope ladder used in the existing emergency evacuation ladder, i.e., the escape ladder, as the main ladder, with a ladder column of soft steel wire rope, and a galvanized steel pipe or aluminum alloy stick with a diameter of about 2 cm and a length of about 30-40 cm as the ladder steps. The two ends are flattened and tied to the ladder column in an 8-shape with iron wire. The two ends can only be flush with the steel wire rope ladder column and must not protrude from the ladder column; then reinforced with an infrared welder; a step is placed every 30 cm or so; when placing heavy objects, the hollow steel pipe must be filled with aluminum alloy bars or solid steel bars or aluminum alloy bars (because the aluminum alloy bars are light); the two ends of the ladder are also connected accordingly to form a ring-shaped ladder (see the emergency evacuation ladder attachment Figure 1-4 ), installed on the top of the helicopter cabin, with grooves and teeth (teeth and grooves, and the soft ladder and emergency evacuation ladder teeth are exactly the same, but the size and installation are different, the quality is different, and it uses power and can be retracted) on the main load-bearing wheel with hooks on the groove plate of the power small wheel; attached to the two pairs of fixed pulleys Figure 1 9 (the diameter should be the same as the main load-bearing wheel gear plate and the outer pulley gear plate 21, both about 20 cm) between the upper part of the ladder, that is, the ladder is placed on the main load-bearing wheel 5, and the two ends are equipped with high side 3 (see the emergency evacuation ladder attachment). Figure 3 ), both ends close to the belt groove (see the emergency evacuation ladder attachment Figure 4 ), with toothed abutment groove (see emergency ladder attachment Figure 3) has a small plate, the middle of which is a groove hook 17, the groove is in the shape of a small hook and is long enough to reach the gears at both ends and is integrated with the gears (the middle segment is in the shape of 4 hooks), fixed on the power winch shaft for braking and speed control, the small tooth plate is divided into several sections so that the small hook can be compressed and bounced, when rotating clockwise, the small plate hook is compressed in the groove; when the winch is reversed, the small hook bounces up and hooks the nearest step, folding the soft ladder back and wrapping it on the small tooth plate of the winch shaft (the size of the small plate can be shaped as a small hook); in order to reduce the sudden thickening of one side of the winch turntable when it is initially wrapped and the difference in deviation from the center, the thickness of one side of the initially wrapped plate should also be reduced to reduce the thickness of the winch plate after the soft ladder is initially wrapped; the so-called high side of this plate should be high enough that the emergency evacuation ladder will not appear after the soft ladder is folded. Figure 3 The specific size of the high side depends on the length of the ladder; on the contrary, the ladder is put down by rotating clockwise, that is, the lower hanging pulley and the load-bearing hook. The two fixed pulleys 9 of the ladder do not need to be too large, and the diameter can be about 20 cm, but the outer side is higher than the side of the escape ladder, and the two wheels are separated to control the circulation distance between the two sides of the ladder; a lower hanging movable pulley 11 is set at the bottom, and the diameter of the wheel can be as large as the outer edge of the two fixed pulleys on the top. First, it is used to control the distance between the two sides of the ring-shaped ladder without colliding with each other. Second, the lower hanging movable pulley is also provided with a load-bearing hook 20 and a load-bearing hook 18, which can be used to hang weapons and equipment, etc. Third, a ladder frame 14 is set on the lower hanging movable pulley shaft, and the ladder frame only needs two or three steps 16, and the ladder is also stretched by weight.

[0004] 4. Description of the drawings: Figure 1 A side view of the rapid lift for this application;

[0005] Figure 2 A front view of the express lift for this application;

[0006] Figure 3 It is a front view of the inner surface of a conjoined gear with teeth, grooves and ribs;

[0007] Figure 4 It is a side view of each pulley, groove and gear;

[0008] The attached drawing is a schematic front view of the inside side of a soft steel wire rope ladder installed in the helicopter cabin roof and retracted and lowered by power. Figure 1 1 is the main load-bearing shaft for winch braking and speed control, 3 is the high side (i.e. the emergency evacuation ladder). Figure 3 ), a grooved and toothed disc, with 4 sections in the disc as small hooks; 2 is a small disc on the winch shaft with a hook, grooves, and grooves at both ends (see the emergency evacuation ladder attachment Figure 4 ), with teeth (see emergency ladder attachment Figure 3) In the middle is a small plate with a retractable small hook 17, i.e. a power plate, a small wheel plate of a power winch 2 fixed on a load-bearing fixed pulley with grooves and teeth on the shaft or a combination thereof, 17 is a retractable small hook, and the specific cross section of the winch shaft - the groove is the small hook; 4 is a certain distance between two pairs of fixed pulleys with grooves and teeth to separate the two sides of the soft ladder from colliding, and the plate is the same structure as the emergency evacuation ladder, i.e. the escape soft ladder with grooves and gears, but much smaller, and there are two corresponding and spaced apart, the purpose is also to prevent the upper and lower soft ladders from colliding on both sides; 6 is the soft ladder column; 5 is a small power plate for braking and speed control, and there are also a ladder column combination plate with grooves and teeth at both ends (i.e. the two ends of the steps) which is inconvenient to show here (please see the attachment of the emergency evacuation ladder Figure 3 and 4 ); 7 is the shaft of two fixed pulleys; 8 is also a soft ladder; 17 is a large movable pulley with grooves and teeth; 15 is the lower hanging movable pulley shaft; 9 is two fixed pulleys with teeth, grooves and high sides, the diameter of the wheel should be the same as 5; 10 is the side of two fixed pulleys; 12 is the fixed pulley teeth, movable pulley teeth, brake wheel gear; 13 is the lower hanging movable pulley teeth, (same as the emergency evacuation ladder attachment Figure 3 , 4 11 is the front of the gear side of the lower lifting pulley; 14 is the ladder frame of the lower lifting pulley; 15 is the shaft of the lower lifting pulley; 16 is the ladder step of the lower lifting pulley; 18 is the load-bearing hook of the lower lifting weight; 19 is the lower lifting pulley of the tooth, groove and side joint; 20 is the lower lifting pulley clamp; 21 is the two outer fixed pulleys for controlling the swing of the ladder column, which have only teeth and no side; 22 is the ladder step; Figure 3 It is a front view of the inner surface of a conjoined gear with teeth, grooves and sidewalls, wherein 12 is a tooth and 10 is a sidewall; Figure 4 It is a side view of each pulley, groove, and gear; among them, 11 is a side, 12 is a tooth, and 23 is a groove; that is, a side view of a combined gear with a side, teeth and groove; 23 is also a side view of the gear groove of each pulley.

[0009] 5. Specific implementation: Fix the load-bearing wheel shaft 1 above the helicopter, use an electric motor or an engine as power, and set a brake speed control device; fix two pairs of fixed pulleys 9 (the diameter should be the same as the main load-bearing wheel and the outer fixed pulley) respectively under the load-bearing wheel and slightly separated by a distance of 4, and align their side with the side of the load-bearing wheel and leave space so that the two do not rub against each other; pass the ladder column through the load-bearing wheel and hang it on the brake speed control belt teeth, belt grooves, and hook small discs, and then pass through the teeth of the two pairs of fixed pulleys, and then set fixed pulleys outside the two pairs of small fixed pulleys to prevent the ladder from getting rid of the gears; then place the lower hanging pulley 13 in the ring-shaped ladder 8, and then pass the ladder 8 through the lower hanging pulley hook 20 and clamp it in the lower hanging pulley 19; and connect the two ends of the ladder 8 to form a ring, and clamp the lower hanging pulley The load-bearing hook 18 is placed in the middle; the two fixed pulleys are placed in the middle below the load-bearing wheel respectively, and slightly exceed the straight line of the soft ladder, so that the toothed disc can hang on the soft ladder steps; when the load-bearing wheel is reversed, the small hook 17 in the recess can be ejected and aligned with the toothed disc, hooking a step of the soft ladder, so that the soft ladder is retracted and wrapped on the small toothed disc of the winch; the lower hanging pulley is retracted; when the winch rotates clockwise, the small hook 17 can be compressed to the same level as the gear recess before it is out of the way, and only when it is reversed can it hook the steps and wrap the soft ladder up and retract it; it can also help the main load-bearing wheel to brake and control the speed to lift heavy objects and ascending personnel through two pairs of fixed pulleys 12 and two outer fixed pulleys 21; because the soft ladder column 8 is double-folded and suddenly retracted to thicken the winch axis deviation, a groove is provided to reduce the deviation of the soft ladder from the axis when it is first wrapped on the winch turntable, so a groove is provided on the winch shaft to reduce the axis deviation.

Claims

1. A fast elevator installed on a helicopter, characterized in that: Use soft steel wire rope as ladder column, and use galvanized steel pipe or aluminum alloy strip as ladder steps; the two ends of the ladder column are connected to form a ring-shaped ladder installed on the groove plate of the power small wheel plate with groove and tooth on the top of the helicopter cabin, and two pairs of fixed pulleys with groove and tooth are used under the main load-bearing wheel to correspond to the upper main load-bearing wheel and be parallel and separated by a certain distance; The main load-bearing wheel is placed above the two pairs of fixed pulleys, i.e., the soft ladder is placed on the wheel. The two ends of the main load-bearing wheel are high-sided and close to the toothed disc with grooves and teeth. A plurality of groove hooks are arranged in the middle of the small disc of the main load-bearing wheel. The length of the groove hooks reaches the gears at both ends and is integrated. The main load-bearing wheel is fixed on the shaft of the power winch with brake and speed control. The small toothed disc is divided into multiple sections so that the small hook can be compressed and bounced. Outside the two pairs of fixed pulleys, a corresponding small fixed pulley with the same diameter as the main load-bearing wheel is used to control the swing of the soft ladder; the wire rope soft ladder is installed in the groove of the load-bearing main wheel, and the gear of the gear can hang on the ladder step, and the two sides pass between the two pairs of fixed pulleys below and the outer pulley, and are connected accordingly according to the required length of the soft ladder to form a ring-shaped soft ladder; then the lower hanging large movable pulley is installed in the soft ladder, and the ladder body is clamped with a load-bearing hook; then the ladder frame is horizontally placed on the lower hanging movable pulley shaft, and the groove of each pair of toothed discs must match the steel wire rope of the soft ladder, and the distance between each pair of grooved discs must match the ladder column width of the soft ladder; the teeth must be calculated so that each step of the ladder must be hung in the tooth recess; When rotating clockwise, the small disc hook is compressed in the groove, and the soft ladder, namely the lower hanging pulley and the load-bearing hook, can be lowered; when the winch is reversed, the small hook bounces up and hooks the nearest step, folding the soft ladder back and wrapping it around the small toothed disc of the winch shaft, thus retracting the lower hanging pulley.

2. A fast elevator installed on a helicopter according to claim 1, characterized in that: The main load-bearing wheel and the two pairs of fixed pulleys and the outer fixed pulley at the bottom must have both power increase and braking speed control; they must also have the ability to brake and control speed simultaneously and independent flexibility, because the speeds of lowering and retracting the ladder are different.

3. The fast elevator installed on a helicopter according to claim 1, characterized in that: The diameters of the main load-bearing wheel disc and the two pairs of fixed pulleys and the outer fixed pulley at the bottom should be the same so that they can all be lifted by power and lowered at controlled speed, and the speed can be the same.

4. The rapid elevator installed on a helicopter according to claim 1, characterized in that: The two pairs of outer pulleys do not need sides and grooves, only corresponding gears to help lower and lift gravity and brake.

Images