CN107021200B - Wheel-lifting umbrella lift-controllable high-efficiency generation device and use method - Google Patents
Wheel-lifting umbrella lift-controllable high-efficiency generation device and use method Download PDFInfo
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Abstract
The invention relates to the technical field of aircrafts, in particular to a wheel-lift parachute controllable lift force high-efficiency generating device capable of providing lift force and a using method. The device comprises a load frame, a convertible rope quick pull-down device, at least 2 sets of light tensile connecting ropes with certain length, a wheel lifting umbrella and an initial force lifting device, wherein the light tensile connecting ropes, the wheel lifting umbrella and the initial force lifting device are connected with the load frame at the same time, and all the components are connected from bottom to top in sequence. The device application method makes full use of the air resistance law, drives the wheel-lifting umbrellas to rise by the initial force lifting device with smaller lifting force, and freely rises by pulling down and releasing a plurality of wheel-lifting umbrellas in turn, the wheel-lifting umbrellas are inflated and unfolded and drooped and closed in turn in the movement process, and the wheel-lifting umbrellas inflated and unfolded in turn generate larger air resistance due to relative air movement during quick pull-down, and the resistance reversely acts on the load frame through the connecting rope and the convertible rope quick pull-down device fixed on the load frame, so that continuous larger lifting force for the load frame is formed.
Description
Technical Field
The invention relates to the technical field of aircrafts, in particular to a wheel-lift parachute controllable lift force high-efficiency generating device capable of providing lift force and a using method.
Background
The human beings have long had the ideal of flying freely in the air, and with the improvement of the world technology, the various aircrafts have appeared. Aircraft operation can generally be divided into three phases: the aircraft has the advantages that the aircraft can generate lift force larger than self gravity within a certain time when the aircraft is lifted, the aircraft can maintain the balance between the lift force of the self gravity and certain advancing power for a long time when the aircraft is lifted, the aircraft can be controlled to gradually reduce the lift force when the aircraft is landed, so that the aircraft can gradually descend to the ground instead of falling, the most important and necessary essence of the aircraft is the continuous lift force, and how to generate the controllable lift force capable of offsetting the self gravity. For example, balloons and airships depend on the static buoyancy of air bags to air, fixed-wing airplanes generate lift force by the pressure difference between the upper part and the lower part of wings when moving forwards at high speed, gyroplanes generate lift force by the pressure difference between the upper part and the lower part when the rotors rotate at high speed, and rockets generate recoil force by reverse high-speed injection.
However, the above lift force generation methods all have many disadvantages, the static buoyancy of the hydrogen (or helium) air bags to the air needs an extra large volume, the lift force generated by the pressure difference between the upper and lower sides of the moving wing needs a heavy power device, so that the efficiency is low, and the recoil force generated by high-speed injection needs more fuel. In recent years, no new lift force generation device and theory in the flight field appear, so that most of the aircrafts are large passenger-cargo aircrafts with high energy consumption or light and micro unmanned aircrafts, and light manned aircrafts always loiter in the initial glider mode of Laite brother. It is desirable to develop an apparatus and method that provides both high efficiency, controlled sustained lift and light weight.
Disclosure of Invention
The object moving in the air can be subjected to air resistance, and the formula of the air resistance is as follows: f = (1/2)CρSV2In the formula: c is the air resistance coefficient; ρ is the air density; s, the windward area of an object; v is the relative movement speed of the object and the air, and the air resistance is in direct proportion to the air resistance coefficient and the windward area and in direct proportion to the square of the speed under normal conditions. According to the principle, people invent the parachute which is a pneumatic speed reducer and generally comprises an umbrella cover with a large folding area, a falling person or object is connected with the umbrella cover through a rope, the umbrella cover is driven to fall rapidly under the action of gravity during working, the umbrella cover is inflated and unfolded relative to air movement, large air resistance can be generated, the person or object can fall stably at a reduced speed, and the safety of the person or object falling in the air is guaranteed. If further analyzed, the air resistance generated by the parachute canopy is essentially the lift of the entire system, except that this lift does not exceed the total system gravity, so the entire system is descending. The invention is based on the analysis to combine the flexible umbrella surface with the common lift force generation method to carry out composite design, so that the flexible umbrella surface can generate lift force with high efficiency, controllability and continuity.
The basic structure device of the invention comprises a load frame, a convertible rope fast pull-down device, at least 2 sets of light tensile connecting ropes with certain length, a wheel-lift umbrella (consisting of light tough and flexible umbrella cover, a central force bearing rope, peripheral force bearing ropes, a light anti-overlapping net and an umbrella cover opening guarantee device) and an initial force lifting device which are simultaneously connected with the load frame, wherein all components are sequentially connected from bottom to top, the initial force lifting device refers to a device capable of automatically generating and continuously maintaining lifting force, such as a balloon or an electric rotor wing filled with low-density gas (hydrogen or helium), and the lifting force F of the initial force lifting device is required to be larger than the weight mg of the wheel-lift umbrella and the light tensile connecting ropes with certain length. The convertible rope quick pull-down device is a device which can be connected with a plurality of ropes, can quickly pull down one of the ropes through a person or other power mechanisms, and can completely release the rest of the ropes, and can timely convert the ropes into the devices which can quickly pull down the other rope and completely release the rest of the ropes according to requirements. The total device weight was set to Mg.
The operation method comprises the following steps: all the light tensile connecting ropes are firstly released, the wheel-lifting umbrella in a closed state is lifted to the air by an initial booster, then the light tensile connecting rope of one wheel-lifting umbrella is quickly pulled by a convertible rope quick pull-down device arranged on a load frame, the pull-down umbrella cover moves downwards relative to the air and then still continues to move downwards after being inflated and unfolded, and the umbrella cover can be subjected to air resistance fResistance deviceThe air resistance on the umbrella surface is reversely acted on the load frame through the connecting rope and the convertible rope quick pull-down device to become a lifting force F acted on the load frameLifting of wineI.e. FLifting of wine=fResistance deviceAccording to the formula of air resistance, the air resistance is in direct proportion to the square of the speed, and when the speed of the umbrella cover downwards pulling along with the connecting rope reaches a certain value, namely the speed of the umbrella cover downwards moving relative to the air reaches a certain value, the lifting force F borne by the load frameLifting of wineEqual to the weight Mg of the whole device, the pull-down speed of the connecting rope is continuously increased, and the lifting force F borne by the load frameLifting of wineWill be greater than the weight Mg of the entire device, at which time the state of the entire device is: the load frame moves upwards, the wheel-lift parachute which is pulled down by the connecting rope gradually approaches to the load frame, and the rest initial force lifters and the wheel-lift parachute ascend along with the load frame under the action of continuous lifting force of the initial force lifters and keep a stretching state. When the quick pull-down connecting rope of convertible rope device that goes down reached the end, release this connecting rope completely, the second wheel of switching pull-down rises the connecting rope of umbrella simultaneously, the second wheel rises the umbrella will produce the lift to the load frame according to above-mentioned principle this moment, and first wheel rises the umbrella and has lost the pulling force of the quick pull-down device of convertible rope to connecting rope, at air resistance, can rise with a great acceleration fast under the resultant force effect of initial power of rising ware, the umbrella face contracts under the effect of air resistance simultaneously, air resistance when the air resistance that receives at the lift in-process will be less than the pull-down far away, therefore first wheel rises the umbrella will be at certain round and rises the umbrellaThe wheel-lifting umbrella returns to the initial position within time, the time of the downward pulling movement process of the wheel-lifting umbrella is equivalent to that of the free lifting movement process by adjusting the lifting force of the initial force booster, the length of the connecting rope and the receiving speed of the convertible rope quick pull-down device, and then the lifting force is continuously applied to the load frame by alternately lifting and pulling the wheel-lifting umbrella.
The invention fully utilizes the air resistance law, drives the wheel-lifting umbrellas to rise by the initial force lifting device with smaller lifting force, and freely rises by pulling down and releasing a plurality of wheel-lifting umbrellas in turn, the wheel-lifting umbrellas are inflated and unfolded and drooped and closed in turn in the movement process, and the wheel-lifting umbrellas inflated and unfolded in turn generate larger air resistance due to relative air movement when pulled down rapidly, and the resistance reversely acts on the load frame by the connecting rope and the convertible rope rapid pull-down device fixed on the load frame, thereby forming continuous larger lifting force on the load frame. The area of the umbrella cover of the device is large after the umbrella cover is inflated, and the high-speed pull-down of the connecting rope is also very easy to realize and control by using small power or even manpower through the simple and easy convertible rope quick pull-down device, namely the relative movement speed of the umbrella cover and air can be controlled to realize high speed, so the device can generate lift force in a high-efficiency and controllable manner according to an air resistance formula.
The invention has the advantages that: the invention has simple structure, most components are made of flexible materials, and are convenient to store, thereby being suitable for various flight devices; the lifting force devices in various forms can be formed by connecting a plurality of wheel-lifting umbrellas in series, in parallel, in series or in parallel, and the like, so that the lifting force with a larger numerical value can be provided, and the stability and the safety are good.
Drawings
Fig. 1 is a schematic view of the basic structure device of the preferred embodiment of the invention (wheel-lift umbrella drooping and closing state).
Fig. 2 is a schematic view of the basic structural means of the preferred embodiment of the present invention (wheel-lift umbrella inflated and unfolded state).
Fig. 3 is a schematic structural view (drooping closed state) of the wheel-lift umbrella as a main component of the present invention.
Fig. 4 is a schematic structural view (inflated and unfolded state) of the wheel-lift umbrella as a main component of the invention.
FIG. 5 is a schematic diagram of a method of use of the present invention, wherein the invention is in an initial state.
FIG. 6 is a schematic diagram of a method of use of the present invention, wherein the invention is in an activated state.
FIG. 7 is a schematic illustration of a method of use of the present invention, wherein the invention is in an intermediate state.
FIG. 8 is a schematic illustration of the method of use of the present invention, wherein the invention is in an end state.
Fig. 9 is a schematic view of another preferred embodiment of the present invention (a rope pull-down device employing a coil release mechanism).
Fig. 10 is a schematic view of another preferred embodiment of the present invention (the initial lift device is an electric rotor helicopter).
Detailed Description
The basic structure, main features, using method and technical effects of the preferred embodiment of the present invention will be described in further detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2, which are schematic views showing a basic structure device of a preferred embodiment of the present invention, fig. 1 is a drooping closed state of a wheel-lift umbrella 2, fig. 2 is an inflated unfolded state of the wheel-lift umbrella 2, and the basic structure device of the present invention comprises: the device comprises an initial force booster 1, a wheel-lifting umbrella 2, a light tensile connecting rope 3, a convertible rope quick pull-down device 4 and a load frame 5, wherein the components are connected from top to bottom in sequence. The initial booster 1 is a device capable of automatically generating lift force and continuously maintaining the lift force for a period of time, the preferred embodiment of the invention adopts a balloon filled with low-density gas (hydrogen or helium balloon) as the initial booster 1, which is a known technology, the balloon can be made of polymer composite film materials, and the device has the advantages of no energy consumption, no noise and stable lift force, and has the defects of large volume and incapability of controlling the size and the direction of the lift force; the light tensile connecting rope 3 can be made of a high-strength cotton rope, a Kevlar or other high polymer material composite ropes; the convertible rope quick-pull-down device 4 is a device which can be connected with a plurality of ropes, can quickly pull down one of the ropes by people or other power mechanisms and can completely release the other ropes, and can timely convert the ropes into the ropes with the other ropes pulled down quickly and the other ropes completely released according to requirements. The load frame 5 can be made of aluminum alloy, titanium alloy, light high-strength carbon fiber composite material.
Fig. 3 and 4 are schematic structural views showing a wheel-lift umbrella 2 as main components of the wheel-lift umbrella 2, fig. 3 is a drooping closed state of the wheel-lift umbrella 2, and fig. 4 is an inflating unfolded state of the wheel-lift umbrella 2. The wheel-lifting umbrella 2 in the figure is composed of an umbrella cover 201, a central force bearing rope 202, a peripheral force bearing rope 203, an anti-overlapping net 204 and an umbrella cover opening guarantee device 205. The central force bearing rope 202 is fixed at the central position of the umbrella cover 201, penetrates the umbrella cover 201 upwards to be connected with the initial force lifting device 1, and is connected with the lightweight tensile connecting rope 3 downwards, and the function of the central force bearing rope is to ensure that the lifting force of the initial force lifting device 1 does not act on the umbrella cover 201 to cause deformation and closing after the umbrella cover 201 is pulled to move downwards and is inflated and unfolded, and can pull the umbrella cover 201 upwards to ascend along with the initial force lifting device 1 when the umbrella cover 201 is not pulled downwards and is closed. The umbrella cover 201 is provided with a plurality of peripheral force bearing ropes 203 at the peripheral positions, the peripheral force bearing ropes 203 are gathered and then downwards connected with the light tensile connecting rope 3, and the function of the connecting rope is to transmit the air resistance of the umbrella cover 201 which moves downwards and is inflated and unfolded. An anti-folding net 204 is additionally arranged among the peripheral carrier ropes 203, meshes of the anti-folding net 204 need to be smaller than the outer diameter of the initial booster 1, and the anti-folding net has the function of preventing the initial booster 1 from entering under the inflatable and deployable umbrella cover 201 to be folded together to influence the next movement track when the downward-pulled inflatable and deployable umbrella cover 201 meets the initial booster 1 which freely ascends. An umbrella cover opening guaranteeing device 205 is arranged on a central force bearing rope 202 at the bottom of the wheel-lifting umbrella and is arranged at the tail end position of the drooping closing of the umbrella cover 201, an upper conical frame made of light plastic is adopted, most of the upper end of the upper conical frame is inserted into the drooping closing umbrella cover 201, only the tail end of the upper conical frame is exposed outside, and the function of the umbrella is to ensure that air flow is timely filled into the umbrella cover 201 when the umbrella is pulled downwards so as to enable the umbrella to be unfolded. The shape of the umbrella cover 201 can be square, round, wing-shaped, strip-shaped and the like according to the requirement. The umbrella surface 201 can be made of high-strength parachute cloth materials, the central force bearing rope 202 and the peripheral force bearing ropes 203 can be made of high-strength cotton ropes, Kevlar or other high polymer material composite ropes, and the anti-overlapping net 204 can be made of high-strength cotton threads and high polymer material composite threads.
Fig. 5, 6, 7 and 8 show schematic diagrams of the using method of the invention. When the device is used, at least 2 sets of initial booster 1, wheel-lifting umbrella 2 and light tensile connecting rope 3 are required to be simultaneously connected to the convertible rope quick pull-down device 4, the weight of the whole device is set to be Mg, for convenience of explanation, the device is set to be simultaneously connected with 2 sets of booster 1, and one set is the initial booster 1aUmbrella 2 lifting wheelaLight tensile connecting rope 3aThe other set is an initial booster 1bUmbrella 2 lifting wheelbLight tensile connecting rope 3b。
All the light tensile connecting ropes 3 are firstly released as shown in figure 5aAnd 3bFrom an initial booster 1aAnd 1bLifting the umbrella 2 in the closed stateaAnd 2bThe whole device is in an initial state when the device is lifted to the air.
The light tensile connecting rope 3 of one wheel-lifting umbrella is quickly pulled by a convertible rope quick pull-down device 4 as shown in figure 6aWheel-lifting umbrella 2aThe umbrella cover moves downwards relative to the air, continues to move downwards after being inflated and unfolded, and the rest wheel-lifting umbrellas 2bIs not pulled, so the umbrella is kept in a drooping and closing state in the air, and the wheel-lifting umbrella 2 is pulled downaThe umbrella surface can be subjected to air resistance fResistance deviceThe air resistance on the umbrella surface is connected with the rope 3aAnd the convertible rope quick pull-down device 4 acts reversely on the load frame 5 to form a lifting force F acting on the load frame 5Lifting of wineI.e. FLifting of wine=fResistance deviceAccording to the formula of air resistance, the air resistance is proportional to the square of the speed and is connected with the rope 3aWhen the pull-down speed reaches a certain value, the load frame 5 is subjected to a lifting force FLifting of wineWill be greater than the weight Mg of the entire device, at which time the state of the entire device is: the load frame 5 moves upward and is being pulled down by the connecting rope 3aWheel-lifting umbrella 2aWill gradually approach the load frame 5 while the rest of the initial booster 1bUmbrella 2 lifting wheelbBut at its initial booster 1bThe connecting rope 3 is lifted and kept along with the lifting of the loading frame 5 under the action of continuous lifting forcebIn a stretched state, the umbrella 2 is lifted by the wheelbIn a drooping closed state.
When the convertible rope quick pull-down device 4 quickly pulls down the connecting rope 3 as shown in fig. 7aWhen the end is reached, the connecting rope 3 is completely releasedaAnd simultaneously pull-down and pull-up second wheel-lifting umbrella 2bConnecting rope 3 ofbAt this time, the second wheel rises the umbrella 2bWill generate a lifting force on the load frame 4 according to the principle described above, while the first wheel lifts the umbrella 2aLose convertible rope and pull down the device 4 to connect the rope 3 fastaUnder the combined action of air resistance and initial booster, the pulling force of the first wheel-lift parachute 2 can quickly rise at a large accelerationaThe umbrella surface is contracted under the action of air resistance, the air resistance in the lifting process is far less than that in the pulling-down process, and therefore the first wheel lifting umbrella 2aThe wheel-lift parachute 3 can return to the initial position within a certain time, the downward pulling motion process and the free rising motion process of the wheel-lift parachute 3 can be equivalent in time by adjusting the lifting force of the initial booster 1, the length of the connecting rope 2 and the pulling-down speed of the convertible rope quick pulling-down device 4, and then the lifting force can be continuously applied to the load frame through the alternate lifting and pulling-down of the wheel-lift parachute 3.
After the entire device, in particular the load frame 5, has been raised to a predetermined position, all the lightweight tensile connecting cords 3 are connected as shown in fig. 8aAnd 3bFixed at the same position and not pulled down any more, because the weight MG of the whole device is larger than the initial booster 1aAnd 1bWill move downwards, while the wheel lifts the umbrella 2aAnd 2bThe umbrella cover moves downwards relative to the air, then continues to move downwards after being inflated and unfolded, the whole process is consistent with that of a common parachute, and the whole wheel parachute lifting device is in an end shapeState.
In another preferred embodiment of the invention, as shown in fig. 9, the switchable quick pull-down means of the cord can be fastened to the load frame 5 by means of a conventional coil release mechanism 6, which is a very easy mechanical device to implement, and the switchable quick pull-down of the wheellift parachute 2 can be implemented by other means as well, so that the lifting force is continuously applied to the load frame by alternately pulling down and lifting back the wheellift parachute according to the above-mentioned steps. The use of such a coil release mechanism provides for greater tension and coil speed and may take the form of a motor, computer control, or the like.
In another preferred embodiment, the initial force-lifting device in the basic structure device can be an electric rotor wing vertical-lifting device, a power supply thin wire is mixed in a light tensile connecting rope with a certain length, a power supply is configured on the load frame, other devices are the same as above, the active continuous lifting of the wheel-lifting umbrella can be realized, and then the lifting force is continuously applied to the load frame through the alternate pulling-down and lifting-back of the wheel-lifting umbrella according to the steps. Fig. 10 is a schematic view of a basic structure device according to another preferred embodiment of the present invention, wherein the basic structure device of the present invention comprises: the device comprises an electric rotor wing initial booster 7, a wheel-lifting parachute 2, a light tensile mixed wire connecting rope 8, a convertible rope quick pull-down device 6, a load frame 5 and a power supply 9, wherein all components are sequentially connected from top to bottom, the initial booster is changed into an electric rotor wing device from a low-density gas balloon (hydrogen or helium balloon), the defect of large size is overcome, the lift force can be adjusted and controlled, however, due to the addition of a motor, a power line, a power supply and the like, the total weight of the device is increased, the electric quantity is limited, and meanwhile, the electric rotor wing has certain noise.
The invention has the following characteristics: 1. because the structure is simple, most of the structures adopt light materials, soft structures are matched with a small amount of hard frames, the total weight of the device is greatly reduced, and the device is convenient to store; 2. the lifting force is generated by pulling down the connecting rope, the starting is simple, the force is adjusted and controlled conveniently from small to large, the adjustment can be realized by small power or even manpower, and the energy consumption in the adjustment process is extremely low; 3. the lifting force devices in various forms can be formed by connecting a plurality of wheel-lifting umbrellas in series, in parallel, in series or in parallel, and the like, so that the lifting force with a larger numerical value can be provided, and the stability is good; 4. the whole system adopts the wheel lifting parachute, and if potential safety hazards occur, the wheel lifting parachute can be used as a parachute, so that the aircraft can land safely; 5 the whole system can work only by lifting the umbrella to a certain height by wheels, so that the whole system has to have a certain height of headroom when in use.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and it is to be understood that within the knowledge of those skilled in the art, many other changes and modifications can be made by the ordinary skilled in the art without inventive efforts without departing from the spirit and scope of the present invention. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (4)
1. The utility model provides a high-effect generating device of controllable lift of wheel lift umbrella which characterized in that: the device comprises a load frame, a convertible rope quick pull-down device, at least 2 sets of light tensile connecting ropes with certain length, a wheel lifting umbrella and an initial force booster, wherein the light tensile connecting ropes, the wheel lifting umbrella and the initial force booster are simultaneously connected with the load frame, and all components are sequentially connected from bottom to top;
the central force bearing rope is fixed at the central position of the umbrella cover, upwards penetrates through the umbrella cover to be connected with the initial lifting device, and downwards is connected with the light tensile connecting rope, a plurality of peripheral force bearing ropes are arranged at the peripheral position of the umbrella cover, the peripheral force bearing ropes are downwards connected with the light tensile connecting rope after being gathered, an anti-overlapping net is additionally arranged among the peripheral force bearing ropes, meshes of the anti-overlapping net need to be smaller than the outer diameter of the initial lifting device, an umbrella cover opening guaranteeing device is arranged on the central force bearing rope at the bottom of the wheel lifting umbrella and is arranged at the tail end position of the drooping closing of the umbrella cover, an upper conical frame made of light plastic is adopted, most of the upper end of the upper conical frame is inserted into the drooping closed umbrella cover, and only the tail end of the upper conical frame is exposed outside;
the convertible rope quick pull-down device is a device which can be connected with a plurality of ropes, can quickly pull down one of the ropes through a person or other power mechanisms, and can release the rest of the ropes completely, and can timely convert the convertible rope quick pull-down device into a device which can quickly pull down the other rope and release the rest of the ropes completely according to requirements;
the conversion rope quick pull-down device must be fixed on the load frame;
a balloon filled with a low density gas is used as an initial booster.
2. The apparatus of claim 1, wherein: the initial booster means a device capable of automatically generating a lifting force and continuously maintaining the lifting force for a period of time, wherein the lifting force must be heavier than the weight of a wheel-lift umbrella and a certain length of light tensile connecting rope.
3. The apparatus of claim 1, wherein: the wheel lifting umbrella consists of an umbrella cover, a central force bearing rope, a peripheral force bearing rope, an anti-overlapping net and an umbrella cover opening guarantee device.
4. The utility model provides a high-effect generating device's of controllable lift of wheel-lift umbrella use method which characterized in that: when the wheel-lift umbrella lift-controllable high-efficiency generating device is used, at least 2 sets of initial force lifters, wheel-lift umbrellas and light tensile connecting ropes need to be connected to the convertible rope quick pull-down device at the same time;
the wheel-lifting umbrellas are driven by the initial force lifting device to rise, and are pulled down and released in turn to rise freely, the wheel-lifting umbrellas are inflated and unfolded and drooped and closed in turn in the movement process, and air resistance is generated due to relative air movement of the inflated and unfolded wheel-lifting umbrellas during rapid pull-down, and the resistance reversely acts on the load frame through the connecting rope and the convertible rope rapid pull-down device fixed on the load frame, so that continuous lifting force on the load frame is formed, and the continuous lifting force borne by the load frame is greater than the lifting force driven by the initial force lifting device to rise;
the using steps comprise: all the light tensile connecting ropes are firstly released, the wheel lifting umbrella in the closed state is lifted to the air by the initial force lifting device, and the whole device is in the initial state; the light tensile connecting rope of one wheel-lifting umbrella is quickly pulled by the convertible rope quick pull-down device, the umbrella surface of the lower pull-down wheel-lifting umbrella moves downwards relative to the air and continues to move downwards after being inflated and unfolded, and the other wheel-lifting umbrellas are not pulled, so that the other wheel-lifting umbrellas are kept in a drooping and closed state in the air, the umbrella surface of the lower pull-down wheel-lifting umbrella can bear air resistance, the air resistance borne by the umbrella surface is reversely acted on the load frame through the connecting rope and the convertible rope quick pull-down device to form lifting force acted on the load frame, when the pull-down speed of the connecting rope reaches a certain value, the lifting force borne by the load frame is larger than the weight of the whole device, at the moment, the load frame moves upwards, the wheel-lifting umbrellas being pulled down and connected with the rope gradually approaches to the load frame, and the other initial force lifters and the wheel-lifting umbrellas rise along with the load frame under the action of the continuous lifting force of the initial force devices and keep the tensile state of the connecting rope, The wheel lifting umbrella droops to close; when the quick pull-down device of convertible rope accomodates the connecting rope fast and releases this connecting rope completely when reaching the end, the connecting rope of second round of ascending umbrella is accomodate in the conversion simultaneously, second round of ascending umbrella will produce the lift to the load frame according to same principle this moment, and first round of ascending umbrella has lost the pulling force of the quick pull-down device of convertible rope to the connecting rope, can rise with a great acceleration fast under the resultant force effect of air resistance and initial power of ascending ware, the umbrella face of first round of ascending umbrella is shrink under the effect of air resistance simultaneously, air resistance when ascending the in-process received will be less than the pull-down far away, therefore first round of ascending umbrella will get back to the initial position in a certain time, rise in turn through round of ascending umbrella and pull-down will continue to exert lift to the load frame so.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710236408.2A CN107021200B (en) | 2017-04-12 | 2017-04-12 | Wheel-lifting umbrella lift-controllable high-efficiency generation device and use method |
| PCT/CN2018/080405 WO2018188472A1 (en) | 2017-04-12 | 2018-03-25 | High-efficiency device for generating controllable lifting force for gear lifting parachutes and use method |
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| CN201710236408.2A CN107021200B (en) | 2017-04-12 | 2017-04-12 | Wheel-lifting umbrella lift-controllable high-efficiency generation device and use method |
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| CN107021200B true CN107021200B (en) | 2021-08-27 |
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| CN107021200B (en) * | 2017-04-12 | 2021-08-27 | 王树强 | Wheel-lifting umbrella lift-controllable high-efficiency generation device and use method |
| CN109515679B (en) * | 2018-10-17 | 2022-06-28 | 中国特种飞行器研究所 | Internal suspension cable structure of aerostat capable of externally adjusting tension |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2018188472A1 (en) | 2018-10-18 |
| CN107021200A (en) | 2017-08-08 |
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