Amphibious protection device for people falling from height

Abstract

The present invention discloses an amphibious device for protecting people from falling from heights. The device comprises a tubular, retractable rubber airbag, a safety device harness disposed within the airbag, and a gas generator disposed on the outer wall of the airbag. When the airbag is not inflated, the airbag is secured around the user's waist via the safety device harness. After the airbag is not inflated, the airbag expands into a tubular structure longer than the user's height, placing the user within the inner cavity of the airbag. The airbag is provided with at least one safety device exhaust hole at both ends. The present invention overcomes the shortcomings of the prior art and is more efficient, practical, and economical.

Description

Technical Field

[0001] The present invention relates to the technical field of high-altitude operation protection, in particular to an amphibious device for protecting people falling from high altitude. Background Art

[0002] In the daily production activities of the engineering construction industry, it is easy for people to fall from heights due to lack of safety awareness, inadequate safety measures or risky high-altitude operations. Ultimately, it causes huge losses to people and property, and also destroys the happiness and future of innocent practitioners and their families.

[0003] Even if high-altitude operations and high-risk personnel are given corresponding safety and technical education and equipped with traditional labor protection supplies and high-altitude operation safety protection facilities before construction activities begin, it can only reduce the incidence of safety accidents and achieve safety control within a certain range, but it is difficult to achieve zero accidents in safe production.

[0004] Especially when emergency situations occur during high-altitude operations (such as overturned tower cranes, unstable scaffolding, etc.), it is difficult for workers to respond effectively and protect themselves in a very short time. This directly leads to a high rate of accidents involving high-altitude operations and high-risk personnel, accompanied by personal injuries and deaths. Currently, in the daily production activities of the engineering construction industry, in addition to equipping these high-altitude operations and high-risk personnel with traditional labor protection supplies, there is also a lack of effective and emergency response personnel safety protection facilities or devices to reduce the accident rate and mortality rate caused by emergency situations during high-altitude operations and high-risk personnel, thereby ultimately ensuring the safety of people and property.

[0005] At present, there are devices and patent numbers for protection against sudden emergency situations (such as overturning of tower cranes, instability of scaffolding, etc.) during high-altitude operations and high-risk personnel working at heights, and when personnel are already in a falling state: a high-altitude fall protection device (CN106730431A, CN106730431B and CN206285358U), a high-altitude fall protection device and its working method (CN109224338A).

[0006] Although the structural structures, working mechanisms, and appearances of the above-mentioned various height fall protection devices are very different and complex, they can all provide a certain degree of fall protection when high-altitude operations and high-risk personnel are in danger of falling and are in a falling state, thereby reducing the personal injury rate of people falling from heights. However, they cannot completely achieve zero casualties and comprehensive protection for falling personnel. Moreover, the above-mentioned various height fall protection devices also have their own characteristics and scope of application, as well as different technical shortcomings and problems, which will be described in detail below.

[0007] The first is the high-altitude fall protection device (CN106730431A, CN106730431B and CN206285358U). After it is worn on high-altitude workers and high-risk personnel through a backpack, when the person is in danger of falling from a height and is in a falling state, the three-axis acceleration sensor in the backpack detects that the person's acceleration is gravity acceleration. The sensor sends a signal to the main control circuit. At the same time, the main control circuit controls the ignition drive circuit to drive the igniter to ignite. After ignition, the ignition agent and gas generating agent will be detonated to form a large amount of gas to inflate the airbag. The airbag filled with air forms an airbag, protecting the personal safety of the falling person and reducing the damage caused by the fall. However, it also has the following technical shortcomings and deficiencies:

[0008] ① The device has a large number of parts and a complex structure. It must be commissioned to a professional manufacturer for customization and assembly before it can be put into use. Its production cost is high and its economic efficiency is poor;

[0009] ② When a person is in danger of falling, the device quickly inflates the airbag and forms a huge protective airbag on the back of the person wearing it. The control box is located in the center of the airbag. When the falling person is lying on his back, the airbag can protect the person and minimize the damage caused by the fall. If the falling person is lying face down with his back up, the airbag cannot protect the person, and the person will come into direct contact with the ground, causing casualties. Therefore, the protection mechanism of this device has serious loopholes and safety hazards. In addition, the control box and the airbag are on the same side. When the airbag and the control box are in contact with the ground at the same time and bear the reaction force of the ground, it is easy to cause the control box and its internal battery, undervoltage indicator light, fault indicator light, main control circuit, airbag detection circuit and other electrical components to be impacted or squeezed when subjected to the reaction force of the ground, and cannot be reused. This structural design also has loopholes.

[0010] ③ The device has high requirements for the operating environment. The various electrical components and ignition and gas generating agents contained in it are easily affected by rainy and humid environments, causing problems such as moisture deterioration, short circuit or rust, which eventually lead to the above components not being able to operate normally, causing the entire device to fail. Therefore, the device is only suitable for dry environments, with a narrow range of applications and poor versatility.

[0011] ④ Since the device is carried on the back or abdomen of the person, and contains a large number of parts and has a large weight, it is easy to increase the burden on the person and consume the person's physical strength and energy when the person is working, thereby reducing the person's work efficiency and having poor social benefits.

[0012] The second is a high-altitude fall protection device and its working method (CN109224338A). When a person falls above the protective net, the human detection module transmits the falling person information to the control module. The control module then outputs the control module to control the protective net movement, activates the protective net switch, and resets the compressed spring to drive the protective net installation part to pop out along the horizontal guide rod. At the same time, the protective net also unfolds along the inner corner of the wall to catch the falling person, providing safety protection. However, it also has the following technical shortcomings and deficiencies:

[0013] ① The main fall protection components of the device, including the protective net, protective net mounting unit, protective net movement module, and protective net switch, are designated for installation in the inner corner of the second-floor wall of the building's exterior facade. Simultaneously, the human detection module is designated for installation in the inner corner of each wall above the fourth floor of the building's exterior facade. This installation method will prevent the device from identifying dangerous situations on the second and third floors, and will be unable to promptly address such situations and provide necessary fall protection, ultimately leading to casualties among people falling on the second and third floors. This installation method and working method have serious loopholes and safety hazards, and its safety and protection performance are inadequate. The risk of use is extremely high, and its promotion and application is not recommended.

[0014] ② The device contains many parts and has a complex structure. It must be customized by a professional manufacturer and shipped to the site for installation and commissioning before it can be put into use. Its production and use costs are high and its economic efficiency is poor. At the same time, installation space needs to be reserved on the inner corner of the exterior wall, and the environmental conditions for use are high, and its versatility is poor.

[0015] ③ After identifying a falling person, the device lifts the person up through a protective net and uses the three inner corners of the wall to enclose the person in a limited space to protect their safety. However, the opposite side of the inner corner of the wall is an open surface without any horizontal protection measures. There is a possibility that the falling person will roll out from the open surface, which can easily cause a personal safety accident. Therefore, the protection mechanism of this device has loopholes and safety hazards, and the risk of use is relatively high, and it cannot provide comprehensive protection.

[0016] ④ Since the device and its components are installed on each floor at the inner corner of the exterior wall, the daily supporting maintenance work is difficult and labor-intensive. During the maintenance process, climbing equipment is required, and there are height operations and corresponding risks. The maintenance cost is high and the safety risk is greater.

[0017] Therefore, how to achieve effective self-protection of workers, expand the types of self-protection facilities for people falling from heights, optimize and improve the self-protection methods, application scenarios and self-protection mechanisms for people falling from heights, and simplify the structure and use methods of safety protection devices have become technical problems that technical personnel in this field urgently need to solve. Summary of the Invention

[0018] In view of the above-mentioned defects of the prior art, the present invention provides an amphibious protection device for personnel falling from heights. The purpose of the device is to enable personnel working at heights or at high risk to make effective responses in a short time and simultaneously initiate self-protection in the event of an emergency, thereby significantly reducing the accident rate and mortality rate of personnel working at heights or at high risk in the event of an emergency, and basically ensuring zero personal casualties and minimizing losses, thereby meeting the increasingly stringent safety production requirements of engineering construction.

[0019] To achieve the above-mentioned object, the present invention discloses an amphibious device for protecting people from falling from heights; the device comprises a tubular retractable rubber airbag, a safety device harness disposed within the retractable rubber airbag, and a gas generator disposed on the outer wall of the retractable rubber airbag;

[0020] When the retractable rubber airbag is not inflated, the retractable rubber airbag is secured around the waist of the user via the safety device harness;

[0021] After the retractable rubber airbag is inflated, the retractable rubber airbag expands into a tubular structure having a length greater than the height of the user, and the user is placed in the inner cavity of the retractable rubber airbag;

[0022] The safety device harness comprises a shoulder strap for securing the user's shoulders, a leg strap for securing the user's legs, and a built-in fixing surface of the safety device harness for fixedly connecting to the retractable rubber airbag;

[0023] The retractable rubber airbag is provided with at least one safety device exhaust hole at the opening positions at both ends;

[0024] Each of the safety device exhaust holes includes a safety device exhaust port variable diameter inner cavity, and more than three exhaust port outer fan-shaped blades and more than three exhaust port inner fan-shaped blades respectively provided at the end portions of the safety device exhaust port variable diameter inner cavity;

[0025] The variable diameter inner cavity of the safety device exhaust port is a variable inner diameter hole with an inner diameter near the two end portions being larger than the inner diameter of the middle portion; wherein, between the two end portions with larger diameters and the middle portion with smaller diameters, an outward-facing shoulder facing the outside of the retractable rubber airbag and an inward-facing shoulder facing the inside of the retractable rubber airbag are formed;

[0026] All of the fan-shaped sheets on the outer side of the exhaust port and all of the fan-shaped sheets on the inner side of the exhaust port are respectively connected to the corresponding port portions of the variable diameter inner cavity of the corresponding safety device exhaust port, and are respectively assembled at the corresponding port positions of the corresponding variable diameter inner cavity of the safety device exhaust port to form a circular sheet structure capable of shielding the corresponding port;

[0027] An exhaust port outer fan-shaped leaf connecting spring is provided between a surface of each exhaust port outer fan-shaped leaf facing the inner side of the corresponding safety device exhaust port variable diameter cavity and the corresponding outward sunken shoulder;

[0028] An exhaust port inner fan-shaped leaf connecting spring is provided between a surface of each exhaust port inner fan-shaped leaf facing the inner side of the corresponding safety device exhaust port variable diameter cavity and the corresponding inward sunken shoulder.

[0029] Preferably, the retractable rubber airbag is made of wear-resistant, high-temperature-resistant and tear-resistant fluororubber.

[0030] Preferably, the gas generator includes a gas generator housing fixed to the retractable rubber airbag, a gas generator trigger button provided on the gas generator housing, and a gas generator built-in high-pressure and high-purity liquid carbon dioxide storage tank provided in the gas generator housing;

[0031] The gas generator has a built-in high-pressure, high-purity liquid carbon dioxide storage tank, which is placed close to the inner surface of the gas generator housing. A sealed gas outlet for the carbon dioxide storage tank and a concave fixing slot for the carbon dioxide storage tank are provided towards the position where the rubber airbag can be accommodated.

[0032] The sealed gas outlet of the carbon dioxide storage tank is provided with a gas generating pipe for the carbon dioxide storage tank;

[0033] The carbon dioxide storage tank counterpart gas generation pipe is fixed to the gas generator housing and passes through the gas generator housing to be connected to the retractable rubber airbag;

[0034] After the built-in high-pressure and high-purity liquid carbon dioxide storage tank of the gas generator is squeezed by the trigger button of the gas generator, the built-in high-pressure and high-purity liquid carbon dioxide storage tank of the gas generator inputs carbon dioxide gas into the retractable rubber airbag through the gas generation pipe corresponding to the carbon dioxide storage tank;

[0035] The inner surface of the gas generator housing connected to the side capable of accommodating the rubber airbag is provided with a matching built-in convex fixing slot of the gas generator corresponding to the concave fixing slot of the carbon dioxide storage tank;

[0036] When the concave fixing slot of the carbon dioxide storage tank and the built-in convex fixing slot of the gas generator are engaged with each other, they are connected into one, so that the built-in high-pressure and high-purity liquid carbon dioxide storage tank of the gas generator is in a normally open state, and the internal carbon dioxide gas is completely transported to the retractable rubber airbag.

[0037] More preferably, the gas generator housing is provided with a gas generator external flip cover;

[0038] The gas generator external flip cover and the gas generator shell are hingedly connected via a hinged portion between the gas generator external flip cover and the shell, and the opening and closing operation is performed via the hinged portion between the gas generator external flip cover and the shell.

[0039] More preferably, a gas generator trigger button restoring spring is provided in the gas generator housing at a position corresponding to the gas generator trigger button and a gas generator trigger button positioning plate on which the gas generator trigger button is provided.

[0040] More preferably, the gas generator has a built-in high-pressure and high-purity liquid carbon dioxide storage tank that adopts a double-layer fixed vacuum powder insulated storage tank, the inner tank material is 16MnDR, the outer tank material is Q235B or 16MnR, the surface anti-corrosion coating adopts sandblasting, rust removal, blowing, and spraying technology, and a two-component fast-curing liquid coating is used.

[0041] More preferably, the outer wall of the rubber airbag that can be accommodated has a plurality of safety device hook and loop fasteners evenly distributed axially;

[0042] The plurality of safety device hook and loop fasteners are used to store the retractable rubber airbag after the retractable rubber airbag is emptied of gas;

[0043] Moreover, at least one safety device hook and loop fastener is provided on the outer side of the side of the gas generator facing the two ends of the retractable rubber airbag.

[0044] More preferably, the position where the retractable rubber airbag is connected to the Velcro of each safety device, the position where it is connected to the gas generator housing, the position where it is connected to the built-in fixing surface of each safety device strap, and the position where each safety device exhaust hole is set are all provided with a thickened airbag rubber barrier.

[0045] More preferably, 502 glue is used to bond and fix between each of the safety device Velcro straps and the retractable rubber airbag, between the built-in fixing surface of each safety device strap and the retractable rubber airbag, and between the gas generator housing and the retractable rubber airbag.

[0046] More preferably, the safety device Velcro, the safety device strap, the built-in fixing surface of the safety device strap, the gas generator housing and the gas generator external cover are all made of high-strength fiber material with fluorescent agent added to the fiber material, and are corrosion-free after a 48-hour salt spray test.

[0047] Beneficial effects of the present invention:

[0048] This invention, both in terms of appearance and internal structure design, has been developed and designed with the concepts of high efficiency, practicality, economy and conservation. In addition to absorbing the advantages and desirable features of the aforementioned various types of high-altitude fall protection devices, it has also abandoned the technical disadvantages and problems of the aforementioned various types of high-altitude fall protection devices. Through streamlined, efficient and practical research and development design, it truly realizes all-round protection for people falling from heights under any environmental conditions, eliminates the defects and loopholes in the personal protection of people falling from heights, greatly improves the safety and protection performance of the protection device, and at the same time greatly reduces the risk of use and safety hazards. Its social benefits are more significant than those of other protection devices.

[0049] This invention simplifies the number of parts and operating steps as a whole, reduces their weight, and optimizes the appearance dimensions of the parts. While greatly reducing the space volume, it achieves convenient carrying and easy use, greatly improving its convenience and operability, and also reduces the load on operators and improves work efficiency.

[0050] This invention is developed based on the principle of all-round protection of personnel, and through the innovative combination of wrap-around structural design and zero-contact protection concept, it truly realizes the comprehensive protection of all parts of the human body when a fall occurs from a height. In addition, the lightweight and strong wrapping airbag not only provides sufficient buffering protection space for the human body when falling from a high altitude to the land, but also generates huge buoyancy that is enough to ensure that the person can be supported above the water surface in time when falling from a high altitude into the water, avoiding the risk of drowning and accidents. This invention is also the first to achieve amphibious use, broadening its application while also improving its versatility, and also reducing the conditions and constraints of use, making it easier to promote and popularize. The social and economic benefits it generates are self-evident.

[0051] This invention has a simple structure, a small number of parts, low consumption of raw materials and resources, low difficulty in production and assembly, a short production cycle and fast delivery. It can be entrusted to low-cost and high-quality manufacturers for customized assembly to save production materials, costs and time. In addition, the operating steps of this invention are almost "fool-proof". In addition to requiring personnel to simply wear the device, when starting the device, only a finger taps a trigger button to realize the lightweight and strong wrapping airbag around the whole body and form an all-round comprehensive protection line in a short time, completely eliminating the possibility of casualties when people fall. Moreover, the "fool-proof" operating steps of this invention do not require professional training for operators. They can be mastered by reading the instruction manual or directly oral instruction. The literacy requirements for operators are low, the threshold for use by personnel is lowered, and more people in need are benefited. It provides new ideas for the development of the field of safety equipment and also improves existing safety equipment.

[0052] The consumables used in the process of commissioning of this invention are only small liquid carbon dioxide storage tanks. This consumable has a ready-made mature production process and manufacturer, and can guarantee continuous supply. The carbon dioxide raw material itself is easy to collect and process and does not require the consumption of other raw materials, highlighting economy, environmental protection and resource conservation. In addition, the carbon dioxide gas in the consumable is non-toxic and harmless and easy to replace. Any user can quickly replace the consumable on their own without returning it to the factory for processing, truly realizing rapid reuse at the moment, ensuring that the protection device can be put into use anytime and anywhere and exert its protection function and corresponding benefits. This is an advantage that the other existing high-altitude fall protection devices mentioned above cannot match and possess.

[0053] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 A schematic diagram of the structure in the open state of an embodiment of the present invention is shown.

[0055] Figure 2 A schematic structural diagram showing an embodiment of the present invention in which the operator is in an open state.

[0056] Figure 3 A schematic diagram illustrating the structure of an embodiment of the present invention when it is struck or pressed by a heavy object.

[0057] Figure 4 A schematic diagram showing the structure of an embodiment of the present invention when it falls on the ground or lawn.

[0058] Figure 5 A schematic diagram of the structure of an embodiment of the present invention when it falls into a lake, river or sea surface is shown.

[0059] Figure 6 Schematic diagram showing the configuration of an operator wearing the device in an unopened state according to one embodiment of the present invention.

[0060] Figure 7 A schematic structural diagram showing a state in which the external flip cover of a gas generator on a gas generator is opened in one embodiment of the present invention.

[0061] Figure 8 A schematic cross-sectional structure diagram of a gas generator in one embodiment of the present invention is shown.

[0062] Figure 9 A schematic diagram of the structure in a top view of a gas generator in a closed state of an external flip cover of the gas generator in one embodiment of the present invention is shown.

[0063] Figure 10 A schematic diagram of the structure in a top view of a gas generator in an embodiment of the present invention is shown, with the outer cover of the gas generator opened and the trigger button of the gas generator pressed.

[0064] Figure 11 A schematic diagram of the structure in a top view showing the gas generator trigger button rebounding after the gas generator trigger button is pressed after the gas generator external cover is opened in one embodiment of the present invention.

[0065] Figure 12 Show the present invention Figure 8 Schematic diagram of the local cross-sectional structure at AA in the middle.

[0066] Figure 13 Show the present invention Figure 8 Schematic diagram of the local cross-sectional structure at the middle BB.

[0067] Figure 14 Show the present invention Figure 8 Schematic diagram of the local cross-sectional structure at CC.

[0068] Figure 15 Show the present invention Figure 13 A partially enlarged structural view of the hinged portion between the external flip cover and the outer shell of the gas generator.

[0069] Figure 16 Show the present invention Figure 8 Schematic diagram of the local cross-sectional structure at DD in the middle.

[0070] Figure 17 Show the present invention Figure 8 Schematic diagram of the local cross-sectional structure at EE.

[0071] Figure 18 Show the present invention Figure 8 Schematic diagram of the local cross-sectional structure at FF in the middle.

[0072] Figure 19 A schematic diagram of the longitudinal cross-section structure of the exhaust hole of the safety device in one embodiment of the present invention is shown.

[0073] Figure 20 A schematic diagram of the end structure of the exhaust hole of the safety device in one embodiment of the present invention is shown.

[0074] Figure 21 Show the present invention Figure 19 Schematic diagram of the local cross-sectional structure at II and JJ.

[0075] Figure 22 Show the present invention Figure 19 Schematic diagram of the local cross-sectional structure at GG in the middle.

[0076] Figure 23 Show the present invention Figure 19 Schematic diagram of the local cross-sectional structure at HH in the middle.

[0077] Figure 24 Show the present invention Figure 20 Schematic diagram of the local cross-sectional structure at KK in the middle.

[0078] Figure 25 Show the present invention Figure 20 Schematic diagram of the local cross-sectional structure at LL. DETAILED DESCRIPTION

[0079] Example

[0080] like Figures 1 to 6 and Figures 19 to 25 As shown, an amphibious high-altitude falling personnel protection device; comprising a tubular retractable rubber airbag 15, a safety device strap 13 disposed within the retractable rubber airbag 15, and a gas generator 16 disposed on the outer wall of the retractable rubber airbag 15;

[0081] When the retractable rubber airbag 15 is not inflated, the retractable rubber airbag 15 is secured around the user's waist via the safety device harness 13;

[0082] When the retractable rubber airbag 15 is not inflated, the retractable rubber airbag 15 expands into a tubular structure having a length greater than the height of the user, and the user is placed in the inner cavity of the retractable rubber airbag 15;

[0083] The safety device harness 13 includes a shoulder strap for securing the user's shoulders, a leg strap for securing the user's legs, and a built-in fixing surface 18 of the safety device harness for fixedly connecting to the retractable rubber airbag 15;

[0084] At least one safety device exhaust hole 17 is provided at the opening positions of both ends of the accommodating rubber airbag 15;

[0085] Each safety device exhaust hole 17 includes a safety device exhaust port variable diameter inner cavity 21, and more than three exhaust port outer fan-shaped blades 22 and more than three exhaust port inner fan-shaped blades 20 respectively provided at the end portions of the safety device exhaust port variable diameter inner cavity 21;

[0086] The safety device exhaust port variable diameter inner cavity 21 is a variable inner diameter hole with an inner diameter near the end portions being larger than the inner diameter of the middle portion. An outward-facing shoulder facing the outside of the rubber airbag 15 and an inward-facing shoulder facing the inside of the rubber airbag 15 are formed between the end portions with larger diameters and the middle portion with smaller diameters.

[0087] All the fan-shaped sheets 22 on the outside of the exhaust ports and all the fan-shaped sheets 20 on the inside of the exhaust ports are respectively connected to the corresponding port portions of the corresponding safety device exhaust port variable diameter inner cavity 21, and are respectively assembled at the corresponding port portions of the corresponding safety device exhaust port variable diameter inner cavity 21 to form a circular sheet structure capable of shielding the corresponding port;

[0088] An exhaust port outer fan-shaped leaf connecting spring 23 is provided between a surface of each exhaust port outer fan-shaped leaf 22 facing the inner side of the corresponding safety device exhaust port variable diameter cavity 21 and the corresponding outward sunken shoulder;

[0089] An exhaust port inner fan-shaped leaf connecting spring 19 is provided between a surface of each exhaust port inner fan-shaped leaf 20 facing the inner side of the corresponding safety device exhaust port variable diameter inner cavity 21 and the corresponding inward sunken shoulder.

[0090] The method of use and working mechanism of this invention are as follows:

[0091] Before the user starts working, he must wear the present invention on the ground, insert the folded and stowable rubber airbag 15 from the feet of the person to the middle of the body and temporarily wear it on the waist, and at the same time, pass the shoulder straps and leg straps of the safety device harness 13 through the arms and legs respectively and wear them on the shoulders and between the legs to ensure that the safety device is worn firmly and fits the body. On this basis, the operator can start climbing and carrying out high-altitude operations.

[0092] When a user accidentally slips and falls while working at height, or the work platform on which he is working suddenly becomes unstable and overturns, the gas generator 16 is operated to input carbon dioxide into the retractable rubber airbag 15. During this process, the liquid carbon dioxide enters the normal temperature and pressure environment of the rubber airbag from the high-pressure and low-temperature environment in the original storage tank, causing the carbon dioxide to undergo a gasification reaction. That is, the liquid carbon dioxide absorbs the heat in the rubber airbag and gasifies from liquid to carbon dioxide gas. When the carbon dioxide gasifies, its volume will expand by about 450 to 640 times, that is, the conversion rate of liquid carbon dioxide to gaseous carbon dioxide is 189 to 269 liters per minute. After absorbing a large amount of heat, the internal temperature of the rubber airbag 15 drops to a lower value, thereby preventing the airbag 15 from bursting due to excessive internal temperature and pressure when used in hot weather or environment. Once the liquid carbon dioxide enters the rubber airbag 15, it vaporizes very quickly, quickly filling the interior of the rubber airbag 15 with gas. At this point, the person simply raises their arms, and the inflated rubber airbag 15 wraps around them, providing comprehensive protection. Openings are formed at the ends of the rubber airbag 15, allowing the person to escape and breathe. When fully encased in the inflated rubber airbag 15, the rubber airbag 15 is the first part to come into contact with the ground, preventing any other part of the body from coming into contact or colliding with the ground. This prevents casualties from falling from height.

[0093] After the person and the rubber airbag 15 they are wrapped in have landed stably, they can remove the safety device harness 13, including the shoulder straps and leg straps, and climb out of the openings at the ends of the rubber airbag 15 to effectively save themselves. If, after the person and the rubber airbag 15 they are wrapped in have landed stably, an obstacle or heavy object blocks one opening around the rubber airbag 15, the person can still escape through the other opening. In addition, the rubber material of the rubber airbag 15 has excellent anti-expansion strength, elasticity, and strong flexibility, that is, it is resistant to impact damage, tearing, and wear, which can withstand the impact and pressure of heavy objects. At the same time, it provides sufficient safety protection space for the person in the rubber airbag 15 to prevent the person from being injured by pressure or impact from heavy objects.

[0094] In addition, the inflated rubber airbag 15 has a large buoyancy due to its low density of carbon dioxide gas and large volume. Even if a person and the wrapped rubber airbag 15 fall into the water, lake or sea together, they will be supported by the water surface under the action of the huge buoyancy generated by the rubber airbag 15. At this time, the person only needs to take off the safety device strap 13, including the shoulder strap and leg strap, and climb out from the openings at both ends of the rubber airbag 15 to escape and save themselves. It truly realizes amphibious use and enhances its versatility and practicality. The structural construction, safety, protection performance and working mechanism of the protective device are reasonable and feasible, without any safety hazards and usage risks, and is worthy of promotion and popularization.

[0095] The safety device exhaust ports 17 at both ends of the rubber airbag 15 have also been optimized and considered. In order to prevent the carbon dioxide gas filled in the rubber airbag 15 from being excessively exhausted through the exhaust ports 17 when the person and the rubber airbag 15 fall into contact with the ground or when the rubber airbag 15 is pressed or impacted by a heavy object, thereby failing to provide long-term and effective protection for the person, the structure of the safety device exhaust ports 17 has specially adopted a variable diameter inner cavity structure. When the rubber airbag 15 is subjected to external force, the carbon dioxide gas in the airbag will first be squeezed out of the exhaust port. The side fan-shaped panels 20 and the springs 19 connecting the inner fan-shaped panels of the compressed exhaust port are connected together, causing the three inner fan-shaped panels 20 of the exhaust port to bend outward and simultaneously open the original spliced gaps, allowing the carbon dioxide gas to be discharged from the opened gaps. When the rubber airbag 15 is subjected to external force and the air pressure generated on the three inner fan-shaped panels 20 of the exhaust port is less than the elastic restoring force of the springs 19 connecting the inner fan-shaped panels of the three exhaust ports, the three inner fan-shaped panels 20 of the exhaust port will be spliced together again and the exhaust gaps will be closed, and the carbon dioxide gas will no longer be discharged. When the exhausted carbon dioxide gas passes through the safety device's exhaust port variable diameter cavity 21, the increased gas flow path consumes a significant amount of the carbon dioxide gas's kinetic energy and velocity. This results in a slower flow rate and lower pressure when the carbon dioxide gas reaches the three exhaust port outer fan-shaped panels 22 through the variable diameter cavity 21. This makes it difficult for the carbon dioxide gas to push open the three now-sealed exhaust port outer fan-shaped panels 22, and it also prevents exhaust from the gaps between the three exhaust port outer fan-shaped panels 22. Even if the carbon dioxide gas pressure acting on the three exhaust port outer fan-shaped panels 22 temporarily exceeds the elastic restoring force of the exhaust port outer fan-shaped panel connecting springs 23, causing some carbon dioxide gas to be discharged, when the carbon dioxide gas pressure becomes less than the elastic restoring force of the exhaust port outer fan-shaped panel connecting springs 23, the three exhaust port outer fan-shaped panels 22 will reclose and prevent further carbon dioxide gas from discharging, ultimately retaining most of the carbon dioxide gas within the rubber airbag 15, thereby providing long-term and effective protection for personnel. In addition, the staggered arrangement between the three inner fan-shaped sheets 20 of the exhaust port and the three outer fan-shaped sheets 22 of the exhaust port can prevent carbon dioxide gas from being directly discharged along the through seams of the inner and outer fan-shaped sheets, further enhancing the airtightness and stability, and allowing the rubber airbag 15 to have better and more stable performance.

[0096] The present invention has the advantages of simple production, short production cycle, low production cost, low resource consumption, light weight, small size, simple and easy operation, easy to use, easy to carry and wear, etc. due to its small number of parts, simple structure and most of which are non-metallic parts, and streamlined operation and wearing steps. It has very low requirements on personnel literacy when using it and can be quickly mastered without special training. Its economy, environmental protection and convenience are unmatched by the other high-altitude fall protection devices mentioned above.

[0097] The parts of the present invention do not contain electrical components, igniters, gas generating agents, ignition agents and other parts that require regular maintenance, as well as chemical consumables. It is only necessary to promptly update the carbon dioxide storage tank 9 after the use of this invention to achieve repeated recycling. The replacement of the carbon dioxide storage tank 9 can be completed with one hand in the installation and removal operation space 8 inside the gas generator. The operation is very convenient, thereby greatly reducing the cost of use and expenses including maintenance fees, testing fees, return fees, material fees, etc., further highlighting the good economic and social benefits of this invention. At the same time, because this invention does not contain the aforementioned electrical components, igniters, gas generating agents, ignition agents and other parts, it can also avoid the risk of accidents such as electric shock, explosion and burns due to misoperation, further enhancing the safety and protection performance of the invention.

[0098] In some embodiments, the retractable rubber airbag 15 is made of wear-resistant, high-temperature-resistant and tear-resistant fluororubber.

[0099] Wear-resistant, high-temperature-resistant and tear-resistant fluororubber itself is a prior art and has been disclosed in the invention patent with publication number CN106317713B.

[0100] In actual application, the retractable rubber airbag 15 is made of a wear-resistant, high-temperature-resistant, highly elastic, tough and tear-resistant rubber material. The rubber airbag 15 made of this rubber material has a wide range of applicable temperatures. The material of the rubber airbag will not change in the range of -10°C to +90°C. Moreover, this rubber material has excellent anti-swelling strength and elasticity, strong flexibility, that is, resistance to impact damage, tear resistance, and wear resistance. The rubber airbag made of it can meet the use in various working conditions and environments. In addition, the production process of this rubber material is mature, the existing product inventory is large, and it is extremely easy to purchase and produce.

[0101] like Figures 7 to 18 As shown, in some embodiments, the gas generator 16 includes a gas generator housing 2 fixed to a retractable rubber airbag 15, a gas generator trigger button 10 disposed in the gas generator housing 2, and a gas generator built-in high-pressure high-purity liquid carbon dioxide storage tank 9 disposed in the gas generator housing 2;

[0102] The gas generator has a built-in high-pressure, high-purity liquid carbon dioxide storage tank 9, which is placed close to the inner surface of the gas generator housing 2. A carbon dioxide storage tank sealed air outlet 7 and a concave fixing slot 4 for the carbon dioxide storage tank are provided toward the position where the rubber airbag 15 can be accommodated.

[0103] The sealed gas outlet 7 of the carbon dioxide storage tank is provided with a gas generating pipe 6 for the carbon dioxide storage tank;

[0104] The carbon dioxide tank gas generating pipe 6 is fixed to the gas generator housing 2 and passes through the gas generator housing 2 to connect to the retractable rubber airbag 15;

[0105] After the gas generator trigger button 10 squeezes the high-pressure, high-purity liquid carbon dioxide storage tank 9 built into the gas generator, the high-pressure, high-purity liquid carbon dioxide storage tank 9 inputs carbon dioxide gas into the retractable rubber airbag 15 through the carbon dioxide storage tank gas generating pipe 6;

[0106] The inner surface of the gas generator housing 2 connected to the side that can accommodate the rubber airbag 15 is provided with a matching gas generator built-in convex fixing groove 5 corresponding to the concave fixing groove 4 of the carbon dioxide storage tank;

[0107] When the concave fixing slot 4 of the carbon dioxide storage tank and the built-in convex fixing slot 5 of the gas generator are interlocked and connected together, the built-in high-pressure and high-purity liquid carbon dioxide storage tank 9 of the gas generator is in a normally open state, and the internal carbon dioxide gas is completely transported to the receivable rubber airbag 15.

[0108] In actual use, when the gas generator trigger button 10 is not triggered, the gas generator's built-in high-pressure and high-purity liquid carbon dioxide storage tank 9 is provided with a carbon dioxide storage tank sealed air outlet 7 and a carbon dioxide storage tank concave fixed slot 4. The part of the gas generator's built-in high-pressure and high-purity liquid carbon dioxide storage tank 9 that is provided with a carbon dioxide storage tank sealed air outlet 7 and a carbon dioxide storage tank concave fixed slot 4 is kept at a certain distance from the inner surface of the gas generator housing 2 that is connected to the side that can accommodate the rubber airbag 15. After pressing the gas generator trigger button 10, the gas generator's built-in high-pressure and high-purity liquid carbon dioxide storage tank 9 is provided with a carbon dioxide storage tank sealed air outlet 7 and a carbon dioxide storage tank concave fixed slot 4. The part of the gas generator's built-in high-pressure and high-purity liquid carbon dioxide storage tank 9 that is provided with a carbon dioxide storage tank sealed air outlet 7 and a carbon dioxide storage tank concave fixed slot 4 is tightly attached to the inner surface of the gas generator housing 2 that is connected to the side that can accommodate the rubber airbag 15.

[0109] In the above case, the concave fixing groove 4 of the carbon dioxide storage tank and the built-in convex fixing groove 5 of the gas generator are fixed by interlocking and squeezing each other.

[0110] The carbon dioxide tank gas generating pipe 6 extends from the sealed gas outlet 7 of the carbon dioxide tank, passes through the gas generator housing 2 and enters the accommodating rubber airbag 15 .

[0111] In some embodiments, the gas generator housing 2 is provided with a gas generator external flip cover 1;

[0112] The gas generator external flip cover 1 and the gas generator housing 2 are hingedly connected via a hinged portion 24 between the gas generator external flip cover and the housing, and the opening and closing operations are performed via the hinged portion 24 between the gas generator external flip cover and the housing.

[0113] In actual application, the outside of the gas generator 16 is composed of a gas generator external cover 1 and a gas generator shell 2, and the gas generator external cover 1 and the gas generator shell 2 are hinged together through a hinge part 24 between the gas generator external cover and the shell, and the gas generator external cover 1 realizes the opening and closing operation through the hinge part 24 between the gas generator external cover and the shell.

[0114] In some embodiments, a gas generator trigger button positioning plate 12 for setting the gas generator trigger button 10 is provided in the gas generator housing 2 , and a gas generator trigger button return spring 11 is provided at a position corresponding to the gas generator trigger button 10 .

[0115] The gas generator trigger button 10 and the gas generator trigger button return spring 11 are both placed in the space separated by the gas generator trigger button positioning plate 12 in the gas generator housing 2, and the two ends of the gas generator trigger button return spring 11 are respectively fixed to the inner surface of the gas generator trigger button 10 and the inner surface of the gas generator trigger button positioning plate 12.

[0116] In actual application, the gas generator trigger button positioning plate 12 in the gas generator housing 2 is used to set the gas generator trigger button 10, and the gas generator trigger button return spring 11 set at the position of the gas generator trigger button 10 corresponding to the gas generator trigger button 10 on the gas generator trigger button positioning plate 12 is used to bounce the gas generator trigger button 10 back after being pressed.

[0117] In some embodiments, the built-in high-pressure and high-purity liquid carbon dioxide storage tank 9 of the gas generator adopts a double-layer fixed vacuum powder insulated storage tank, the inner tank material is 16MnDR, the outer tank material is Q235B or 16MnR, and the surface anti-corrosion coating adopts sandblasting, rust removal, blowing, and spraying technology, and a two-component fast-curing liquid coating is used.

[0118] In actual application, the gas generator with the above characteristics and built-in high-pressure and high-purity liquid carbon dioxide storage tank 9 has the characteristics of long service life, compact structure, high compressive strength, strong toughness, easy operation and convenient maintenance, and has been widely used in the gas industry, hospitals, metal smelting and other industries.

[0119] In some embodiments, the outer wall of the rubber airbag 15 can be evenly distributed around the axial direction with multiple safety device hook and loop fasteners 14;

[0120] The plurality of safety device hook and loop fasteners 14 are used to store the retractable rubber airbag 15 after the retractable rubber airbag 15 is emptied of gas;

[0121] Furthermore, at least one safety device hook and loop fastener 14 is provided on the outer wall of the retractable rubber airbag 15 , located on the outer side of the gas generator 16 facing the two ends of the retractable rubber airbag 15 .

[0122] In some embodiments, a thickened airbag rubber barrier 3 is provided at the location where the accommodating rubber airbag 15 is connected to each safety device Velcro 14, at the location where it is connected to the gas generator housing 2, at the location where it is connected to the built-in fixing surface 18 of each safety device strap, and at the location where each safety device exhaust hole 17 is set.

[0123] In practical applications, the retractable rubber airbag 15 can improve local strength by providing a thickened airbag rubber barrier 3 .

[0124] In some embodiments, 502 glue is used to bond and fix between each safety device Velcro 14 and the retractable rubber airbag 15, between each safety device strap built-in fixing surface 18 and the retractable rubber airbag 15, and between the gas generator housing 2 and the retractable rubber airbag 15.

[0125] In some embodiments, the safety device Velcro 14, the safety device strap 13, the safety device strap built-in fixing surface 18, the gas generator housing 2 and the gas generator external cover 1 are all made of high-strength fiber material with fluorescent agent added to the fiber material, and are corrosion-free after a 48-hour salt spray test.

[0126] In actual applications, the safety device Velcro 14, safety device strap 13, safety device strap built-in fixing surface 18, gas generator housing 2 and gas generator external cover 1 and other components made of the above-mentioned high-strength fiber material with added fluorescent agent have the characteristics of long service life, high strength, wear resistance, durability, mildew resistance, acid and alkali resistance, simplicity and lightness, safety and applicability, luminous at night and eye-catching day and night, and can meet the use in various working conditions and environments. In addition, the production technology of this type of fiber material is mature, the existing product inventory is large, and it is extremely easy to purchase and produce.

[0127] The safety device Velcro 14, the safety device strap 13, the built-in fixing surface 18 of the safety device strap, the gas generator housing 2 and the gas generator external cover 1 are all made of high-strength fiber material with added fluorescent agent, which has the characteristics of luminous at night and eye-catching day and night. When the rubber airbag 15 wraps and protects the person who falls from a high altitude to the ground or water, if the person is temporarily unable to implement self-rescue in time, he needs to wait for external assistance to rescue. At this time, the above-mentioned components with added fluorescent agent can glow at night or whiten and illuminate during the day, allowing rescuers to discover and rescue the fallen person in the first time, increasing the chance of the fallen person being rescued and surviving, and also providing rescuers with eye-catching guidance signs, thereby further highlighting the humanized design and strong safety guarantee of the invention.

[0128] In actual application, the gas generator trigger button return spring 11, the exhaust port inner fan-shaped page connecting spring 19 and the exhaust port outer fan-shaped page connecting spring 23 all use ordinary alloy supports, and the remaining parts are made of ABS hard plastic.

[0129] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. Amphibious type protection device for people falling from height; its characteristics are: The invention comprises a tubular retractable rubber airbag (15), a safety device strap (13) arranged in the retractable rubber airbag (15), and a gas generator (16) arranged on the outer wall of the retractable rubber airbag (15); When the retractable rubber airbag (15) is not inflated, the retractable rubber airbag (15) is fixed around the waist of the user via the safety device strap (13); After the retractable rubber airbag (15) is not inflated, the retractable rubber airbag (15) expands into a tubular structure having a length greater than the height of the user, and the user is placed in the inner cavity of the retractable rubber airbag (15); The safety device harness (13) comprises a shoulder strap for fixing the user's shoulders, a leg strap for fixing the user's legs, and a built-in fixing surface (18) of the safety device harness for fixedly connecting to the retractable rubber airbag (15); The retractable rubber airbag (15) is provided with at least one safety device exhaust hole (17) at both end openings. Each of the safety device exhaust holes (17) comprises a safety device exhaust port variable diameter inner cavity (21), and three or more exhaust port outer fan-shaped blades (22) and three or more exhaust port inner fan-shaped blades (20) respectively provided at the end portions of the safety device exhaust port variable diameter inner cavity (21); The safety device exhaust port variable diameter inner cavity (21) is a variable inner diameter hole with an inner diameter near the two end portions being larger than the inner diameter of the middle portion; wherein, between the two end portions with larger diameters and the middle portion with smaller diameters, an outward-facing sunken shoulder facing the outside of the retractable rubber airbag (15) and an inward-facing sunken shoulder facing the inside of the retractable rubber airbag (15) are formed; All of the exhaust port outer fan-shaped sheets (22) and all of the exhaust port inner fan-shaped sheets (20) are respectively connected to corresponding port portions of the corresponding safety device exhaust port variable diameter inner cavity (21), and are respectively assembled at corresponding port positions of the corresponding safety device exhaust port variable diameter inner cavity (21) to form a circular sheet structure capable of shielding the corresponding port; An exhaust port outer fan-shaped leaf connecting spring (23) is provided between a surface of each exhaust port outer fan-shaped leaf (22) facing the inner side of the corresponding safety device exhaust port variable diameter inner cavity (21) and the corresponding outward sunken shoulder; An exhaust port inner fan-shaped leaf connecting spring (19) is provided between a surface of each exhaust port inner fan-shaped leaf (20) facing the inner side of the corresponding safety device exhaust port variable diameter inner cavity (21) and the corresponding inward sunken shoulder.

2. The amphibious device for protecting people from falling from height according to claim 1, characterized in that: The retractable rubber airbag (15) is made of wear-resistant, high-temperature-resistant and tear-resistant fluororubber.

3. The amphibious protection device for people falling from height according to claim 1, characterized in that: The gas generator (16) includes a gas generator housing (2) fixed to the retractable rubber airbag (15), a gas generator trigger button (10) arranged on the gas generator housing (2), and a gas generator built-in high-pressure high-purity liquid carbon dioxide storage tank (9) arranged in the gas generator housing (2); The gas generator has a built-in high-pressure, high-purity liquid carbon dioxide storage tank (9) which is arranged close to the inner surface of the gas generator housing (2), and a carbon dioxide storage tank sealed air outlet (7) and a carbon dioxide storage tank concave fixing slot (4) are provided towards the position capable of accommodating the rubber airbag (15); The sealed gas outlet (7) of the carbon dioxide storage tank is provided with a gas generating pipe (6) corresponding to the carbon dioxide storage tank; The carbon dioxide storage tank counterpart gas generation pipe (6) is fixed to the gas generator housing (2), and passes through the gas generator housing (2) to be connected to the retractable rubber airbag (15); After the gas generator's built-in high-pressure, high-purity liquid carbon dioxide storage tank (9) is squeezed by the gas generator's trigger button (10), the gas generator's built-in high-pressure, high-purity liquid carbon dioxide storage tank (9) inputs carbon dioxide gas into the retractable rubber airbag (15) through the carbon dioxide storage tank's corresponding gas generation pipe (6); The inner surface of the gas generator housing (2) connected to the side capable of accommodating the rubber airbag (15) is provided with a matching built-in convex fixing groove (5) of the gas generator corresponding to the concave fixing groove (4) of the carbon dioxide storage tank; When the concave fixing slot (4) of the carbon dioxide storage tank and the built-in convex fixing slot (5) of the gas generator are engaged with each other, they are connected as one, so that the built-in high-pressure and high-purity liquid carbon dioxide storage tank (9) of the gas generator is in a normally open state, and the internal carbon dioxide gas is completely transported into the retractable rubber airbag (15).

4. The amphibious device for protecting people from falling from height according to claim 3, characterized in that: The gas generator housing (2) is provided with a gas generator external flip cover (1); The gas generator external flip cover (1) and the gas generator housing (2) are hingedly connected via a hinged portion (24) between the gas generator external flip cover and the housing, and an opening and closing operation is performed via the hinged portion (24) between the gas generator external flip cover and the housing.

5. The amphibious device for protecting people from falling from height according to claim 3, characterized in that: A gas generator trigger button positioning plate (12) for arranging the gas generator trigger button (10) is provided in the gas generator housing (2), and a gas generator trigger button return spring (11) is provided at a position corresponding to the gas generator trigger button (10).

6. The amphibious device for protecting people from falling from height according to claim 3, characterized in that: The gas generator has a built-in high-pressure high-purity liquid carbon dioxide storage tank (9) that adopts a double-layer fixed vacuum powder insulation storage tank, the inner tank is made of 16MnDR, the outer tank is made of Q235B or 16MnR, the surface anti-corrosion coating adopts sandblasting, rust removal, blowing, and spraying processes, and also adopts a two-component fast-curing liquid coating.

7. The amphibious device for protecting people from falling from height according to claim 3, characterized in that: The outer wall of the rubber airbag (15) is evenly distributed with a plurality of safety device hook and loop fasteners (14) around the axial direction; The plurality of safety device hook and loop fasteners (14) are used to store the retractable rubber airbag (15) after the retractable rubber airbag (15) is emptied of gas; Furthermore, at least one safety device hook and loop fastener (14) is provided on the outer side of the gas generator (16) facing both ends of the retractable rubber airbag (15) on the outer side of the retractable rubber airbag (15).

8. The amphibious device for protecting people from falling from height according to claim 7, characterized in that: The position where the retractable rubber airbag (15) is connected to each of the safety device hook and loop fasteners (14), the position where the airbag is connected to the gas generator housing (2), the position where the airbag is connected to the built-in fixing surface (18) of each safety device shoulder strap, and the position where each of the safety device exhaust holes (17) are provided are all provided with a thickened airbag rubber barrier layer (3).

9. The amphibious device for protecting people from falling from height according to claim 7, characterized in that: 502 glue is used to bond and fix between each of the safety device Velcro (14) and the retractable rubber airbag (15), between each of the safety device strap built-in fixing surfaces (18) and the retractable rubber airbag (15), and between the gas generator housing (2) and the retractable rubber airbag (15).

10. The amphibious device for protecting people from falling from height according to claim 7, characterized in that: The safety device Velcro (14), the safety device shoulder strap (13), the safety device shoulder strap built-in fixing surface (18), the gas generator housing (2) and the gas generator external flip cover (1) are all made of high-strength fiber material with fluorescent agent added to the fiber material, and are corrosion-free after a 48-hour salt spray test.

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