Train car based negative pressure chamber

Abstract

The present application relates to the field of medical equipment of sanitary train, in particular to a negative pressure cabin based on train compartment. The negative pressure cabin is mainly composed of train compartment, negative pressure device and separation device. The separation device includes separation plate, sealing air bag ring and inflating device. The separation plate is connected with the bottom wall of the train compartment through hinge, and can be placed flexibly or vertically. The outer side is provided with a sealing groove, and the sealing air bag ring is assembled in the sealing groove. When the separation plate is placed vertically, the inflating device inflates the sealing air bag ring, so that the sealing air bag ring tightly abuts against the inner wall of the train compartment and the inner wall of the sealing groove, thereby realizing good sealing. At this time, the separation plate and the left wall, right wall, top wall, bottom wall and rear wall of the train compartment form a closed space, and the negative pressure device is in communication with the space and maintains a negative pressure environment. The negative pressure cabin is simple to construct and disassemble, can effectively block the spread of bacteria, create a stable treatment space for the wounded, and is expected to greatly improve the ability of the sanitary train in medical rescue.

Description

Technical Field

[0001] This invention relates to the field of medical equipment for medical trains, and more particularly to a negative pressure chamber based on a train carriage, used to provide a dedicated isolation and treatment space for the monitoring of critically injured patients on a medical train. Background Technology

[0002] In emergencies such as war, natural disasters, or major public health events, there is a need for the rapid and safe transfer and treatment of critically injured patients. As a vital means of transport and treatment, the safety and functionality of the internal environment of medical trains are of paramount importance. Traditional medical train carriages lack effective isolation and protection measures, making it difficult to prevent the spread of pathogens within the carriages and failing to meet the needs for precise monitoring and isolation treatment of critically injured patients. This invention aims to solve this problem by providing a negative pressure chamber capable of rapidly constructing a sealed negative pressure environment on a train. Summary of the Invention

[0003] To overcome the problems existing in related technologies, this invention discloses a negative pressure chamber based on a train carriage.

[0004] To achieve the above objectives, one technical solution adopted by the present invention is:

[0005] A negative pressure chamber based on a train carriage includes a train carriage, a negative pressure device, and a partition device. The partition device includes a partition plate, a sealing airbag ring, and an inflation device. The lower end of one side of the partition plate is hinged to the bottom wall of the train carriage via a hinge. A sealing groove is provided on the outer side of the partition plate, and the sealing airbag ring is assembled in the sealing groove. It is used to seal the gap between the partition plate and the train carriage when the partition plate is placed upright in the train carriage. The inflation device is used to inflate the sealing airbag ring when the partition plate is placed upright in the train carriage, so that the sealing airbag ring abuts tightly against the inner wall of the train carriage and the inner wall of the sealing groove. When the partition plate is placed upright in the train carriage, it will form a sealed space with the left wall, right wall, top wall, bottom wall, and rear wall of the train carriage. The negative pressure device is located on the outside of the train carriage and communicates with the sealed space.

[0006] Furthermore, the inflation device includes an inflatable airbag and a pressure-applying component driven by a pull cord. The inflatable airbag is connected to the sealing airbag ring. The pressure-applying component is disposed on the partition plate to apply pressure to the inflatable airbag when the pull cord is pulled, so that the gas in the inflatable airbag fills the sealing airbag ring.

[0007] Furthermore, the partition plate has an assembly cavity whose lower end communicates with the sealing groove. The inflatable airbag is located in the assembly cavity and communicates with the sealing airbag ring through its lower end. The pressure application component is located in the assembly cavity and above the inflatable airbag. When the pull rope is pulled, the pressure application component will apply downward pressure to the upper end of the inflatable airbag.

[0008] Furthermore, the pressure application assembly includes a pressure application member that is longitudinally slidably assembled in the assembly cavity, and a first fixed pulley and a second fixed pulley disposed in the assembly cavity. The first fixed pulley is located above the second fixed pulley, the upper end of the pressure application member is located above the second fixed pulley, one end of the pull rope is fixedly connected to the upper end of the pressure application member, and the other end of the pull rope passes around the second fixed pulley and the first fixed pulley in sequence and passes through the partition plate on the side away from the hinge member.

[0009] Furthermore, a hook is fixedly connected to the end of the pull rope.

[0010] Furthermore, the inner wall of the train carriage is provided with hooks and rings that are compatible with the hook.

[0011] Furthermore, the pressure-applying component is rectangular and has a through-structure.

[0012] Furthermore, both the first and second fixed pulleys are disposed within the assembly cavity via a rotating shaft and a bearing.

[0013] Furthermore, the inflatable airbag has a corrugated elastic structure, and when the inflatable airbag is not compressed, it will expand and open under its own elastic force.

[0014] Furthermore, the partition plate has a door groove in the middle, and a closing door for closing the door groove is hinged to one side of the partition plate.

[0015] This invention discloses a negative pressure chamber based on a train carriage. Through ingenious modification of the train carriage structure, combined with advanced partitioning, sealing, and negative pressure generation technologies, this chamber provides a reliable and efficient solution for the transfer of critically injured patients. Its unique partitioning device and inflation system make the construction and disassembly of the negative pressure chamber simple and convenient, allowing for rapid deployment in emergencies and flexible restoration of the train carriage to its original function after the mission. In practical applications, this negative pressure chamber not only effectively prevents the spread of pathogens during transportation and ensures the safety of the surrounding environment, but also provides a relatively stable and independent medical treatment space for critically injured patients, greatly improving the success rate of treatment during transfer. Furthermore, this invention emphasizes detailed design; the careful selection and layout of components such as pull ropes, fixed pulleys, pressure-applying parts, and inflatable airbags fully consider practicality, reliability, and durability. It is believed that with the widespread application of this technology, it will bring a qualitative leap to the medical rescue work of medical trains in responding to various emergencies, becoming a solid line of defense for protecting life and health. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a structural schematic diagram of an embodiment of the negative pressure chamber based on a train carriage according to the present invention;

[0018] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of the negative pressure chamber based on a train carriage according to the present invention;

[0019] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0021] Figure 5 for Figure 3 Enlarged structural diagram at point C;

[0022] Figure 6 for Figure 3 Enlarged structural diagram at point D;

[0023] Figure 7 This is a partial structural schematic diagram of the partition device in one embodiment of the negative pressure chamber based on a train carriage according to the present invention;

[0024] Figure 8 for Figure 7 Enlarged structural diagram at point E;

[0025] Figure 9 This is a schematic diagram of the partition plate in one embodiment of the negative pressure chamber of a train carriage according to the present invention.

[0026] The meanings of the labels in the attached diagram are as follows:

[0027] Train carriage 1, articulated component 11, hook ring 12, negative pressure device 2, separation device 3, separation plate 31, sealing groove 311, assembly cavity 312, sealing door 313, sealing airbag ring 32, inflation device 33, inflatable airbag 331, pull rope 332, pull hook 3321, pressure application component 333, pressure application part 3331, first fixed pulley 3332, second fixed pulley 3333, rotating shaft 3334, bearing 3335. Detailed Implementation

[0028] The invention will now be further described with reference to the accompanying drawings.

[0029] Reference Figures 1-9 As shown, the negative pressure chamber based on a train carriage of the present invention mainly includes a train carriage 1, a negative pressure device 2, and a separation device 3.

[0030] The separation device 3 includes a separation plate 31, a sealing airbag ring 32, and an inflation device 33.

[0031] The lower end of one side of the partition plate 31 is hinged to the bottom wall of the train car 1 via a hinge joint 11, allowing the partition plate 31 to rotate flexibly. When not in use, the partition plate 31 can be laid down without hindering the normal use of the train car; when a negative pressure chamber needs to be constructed, it can be placed upright. A sealing groove 311 is provided on the outer side of the partition plate 31 for installing a sealing airbag ring 32.

[0032] The sealing airbag ring 32 is assembled into the sealing groove 311. When the partition plate 31 is placed upright in the train car 1, it plays a key sealing role, sealing the gap between the partition plate 31 and the train car 1 to prevent air leakage.

[0033] After the partition plate 31 is placed upright, it will form a sealed space with the left wall, right wall, top wall, bottom wall and rear wall of the train car 1. In this state, the sealing airbag ring 32 can be inflated by the inflation device 33. As the gas is filled in, the sealing airbag ring 32 gradually expands and comes into close contact with the inner wall of the train car 1 and the inner wall of the sealing groove 311 to form a reliable sealing structure and ensure the airtightness of the sealed space.

[0034] The negative pressure device 2 is located on the upper part of the outer side of the train carriage 1. When the negative pressure device 2 is working, it can continuously extract the air from the sealed space, creating a negative pressure environment in the space. In this way, outside air can only enter through a special filtration channel, effectively preventing the spread of germs and also preventing polluted outside air from entering the negative pressure chamber and affecting the injured.

[0035] In normal operation, the partition 31 is laid down at the bottom of the train car 1. At this time, the sealing airbag ring 32 is in an uninflated state, does not occupy too much space, and the train car 1 can be used normally for the transportation of personnel or materials.

[0036] When receiving a mission to transfer critically injured patients, the staff first cleans the relevant areas inside train carriage 1, and then rotates the partition 31 around the hinge 11 and places it upright in the predetermined position inside train carriage 1. At this time, the inflation device 33 is operated to inflate the sealing airbag ring 32. As the inflation process progresses, the sealing airbag ring 32 tightly adheres to the inner wall of train carriage 1 and the inner wall of the sealing groove 311, completing the seal.

[0037] Once a sealed space is formed, negative pressure device 2 is activated. Connected to the sealed space via pipes, it continuously extracts air, gradually lowering the air pressure inside the sealed space below the outside atmospheric pressure, creating a stable negative pressure environment. Medical personnel can connect various monitoring devices and perform necessary treatment procedures for critically injured patients within the negative pressure chamber without worrying about the risk of pathogen spread. During transport, negative pressure device 2 operates continuously, maintaining a negative pressure state in real time, ensuring the safety and reliability of the medical train during long-distance transport of critically injured patients.

[0038] Therefore, it can be seen that the negative pressure chamber based on the train carriage of the present invention provides an efficient and safe solution for the transfer of critically injured patients by medical trains through its ingenious structural design, filling the technical gap in related fields and having extremely high practical value and promotion significance.

[0039] In this embodiment, the inflation device 33 includes an inflatable airbag 331 and a pressure-applying component 333 driven by a pull rope 332. The inflatable airbag 331 is connected to a sealing airbag ring 32. The pressure-applying component 333 is disposed on the partition plate 31 to apply pressure to the inflatable airbag 331 when the pull rope 332 is pulled, so that the gas in the inflatable airbag 331 fills the sealing airbag ring 32. This manually driven inflation method can still operate reliably in emergency situations such as sudden power failures of the train, without relying on external power, greatly enhancing the emergency response capability of the negative pressure chamber construction.

[0040] Furthermore, the partition plate 31 has an assembly cavity 312 whose lower end communicates with the sealing groove 311. The inflatable airbag 331 is located within the assembly cavity 312 and communicates with the sealing airbag ring 32 through its lower end. This structural design makes the gas transmission path more concealed and compact, reducing the interference of external factors on the inflation process. The pressure application component 333 is located within the assembly cavity 312 and above the inflatable airbag 331. When the pull cord 332 is pulled, the pressure application component 333 will apply downward pressure to the upper end of the inflatable airbag 331. This layout makes full use of the space of the assembly cavity 312, enabling the pressure application component 333 to act precisely and effectively on the inflatable airbag 331, achieving efficient inflation within a limited space.

[0041] In this embodiment, the pressure application assembly 333 includes a pressure application member 3331 longitudinally slidably mounted in the assembly cavity 312, and a first fixed pulley 3332 and a second fixed pulley 3333 disposed in the assembly cavity 312. The first fixed pulley 3332 is located above the second fixed pulley 3333, and the upper end of the pressure application member 3331 is located above the second fixed pulley 3333. One end of the pull rope 332 is fixedly connected to the upper end of the pressure application member 3331, and the other end of the pull rope 332 passes sequentially around the second fixed pulley 3333 and the first fixed pulley 3332 and exits from the side of the partition plate 31 away from the hinge member 11. This pulley assembly structure cleverly changes the direction of force, allowing medical personnel or staff to easily drive the pressure application member 3331 to slide longitudinally downward in the assembly cavity 312 when operating the pull rope 332 on the side of the partition plate 31 away from the hinge member 11, thereby accurately and stably applying pressure to the inflatable airbag 331. Meanwhile, the fixed pulley reduces the frictional resistance between the pull rope 332 and the partition plate 31, extending the service life of the pull rope 332 and reducing equipment maintenance costs. Furthermore, a lubricating coating can be added to the sliding track of the pressure-applying component 3331 on the inner wall of the assembly cavity 312, further ensuring the smooth operation of the pressure-applying component 3331, making the inflation process more efficient and faster. Even in emergencies requiring rapid construction of a negative pressure chamber, the inflation and sealing steps can be completed systematically, ensuring the negative pressure chamber is put into use promptly and saving valuable time for treating critically injured patients.

[0042] It should be emphasized that when the partition 31 is in an upright position, and the sealing airbag ring 32 is inflated to the point where it is tightly fitted to the sealing groove 311 and the train car 1 and can no longer expand, the inflatable airbag 331 will be difficult to be further compressed by the pressure-applying member 3331. In other words, the pressure-applying member 3331 will be difficult to continue sliding downwards under the pulling action of the pull rope 332. Thus, the pull rope 332 will be difficult to continue extending from the partition 31. At this time, the end of the pull rope 332 away from the protruding end forms an approximately fixed state with the partition 31. In this way, the pull rope 332 can be fixed to the train car 1 to limit the partition 31 from folding towards the hinge member 11. In this way, even if the partition 31 encounters relatively violent shaking or bumps during train operation, it can maintain its upright position thanks to the stable connection between the pull rope 332 and the train car 1, avoiding the impact of accidental displacement on the airtightness of the negative pressure chamber and the stability of the medical treatment environment inside the chamber, providing a more solid guarantee for the safe transfer of critically injured patients.

[0043] Therefore, the pull rope 332 has a dual key function. First, it can stabilize the air pressure inside the sealing airbag ring 32, ensuring the sealing effect and effectively isolating the air inside the negative pressure chamber from the outside world, reducing the risk of pathogen transmission. Second, the pull rope 332 can restrain the state of the partition plate 31, preventing it from folding and maintaining the stability of the negative pressure chamber structure, providing a reliable guarantee for the smooth operation of medical treatment.

[0044] It is worth mentioning that when the negative pressure chamber is no longer needed and the partition 31 needs to be folded, simply disconnect the pull rope 332 from the train car 1. At this time, the partition 31 is no longer constrained by the pull rope 332 and can rotate and fold around the hinge 11. In addition, since there is no longer a continuous external force, the pressure-applying component 3331 no longer applies pressure to the inflatable airbag 331, and the inflatable airbag 331 will not be in close contact with the inner wall of the train car 1. Therefore, the inflatable airbag 331 will not create significant resistance to the folding action of the partition 31, and the partition 31 can easily rotate and fold around the hinge 11 to quickly return to its initial folded state, freeing up sufficient space for other uses of the train car 1. The entire process fully demonstrates the convenience and flexibility of the negative pressure chamber structure in use, meeting the diverse needs for train car space utilization in different scenarios.

[0045] In this embodiment, a hook 3321 is fixedly connected to the protruding end of the pull rope 332, and a hook ring 12 adapted to the hook 3321 is provided on the inner wall of the train car 1. This design makes the connection operation between the pull rope 332 and the train car 1 extremely simple. When it is necessary to construct a negative pressure chamber and fix the partition plate 31, the staff only needs to hook the hook 3321 onto the hook ring 12 to quickly complete the fixation of the pull rope 332, ensuring that the partition plate 31 is stably upright and the sealing airbag ring 32 maintains a good sealing state. When the negative pressure chamber is finished and the partition plate 31 needs to be folded, the staff can easily remove the hook 3321 from the hook ring 12, quickly release the fixation of the pull rope 332, and then smoothly carry out the folding work of the partition plate 31. The cooperation between the hook 3321 and the hook ring 12 not only improves the operational efficiency in the construction and disassembly process of the negative pressure chamber, but also further enhances the stability and reliability of the entire structure, providing a strong guarantee for the efficient operation of the negative pressure chamber in practical applications.

[0046] In this embodiment, the pressure-applying component 3331 is rectangular. This shape design allows it to achieve good fit and guidance with the inner wall of the assembly cavity 312 when sliding longitudinally within the cavity, effectively preventing offset or jamming during sliding and ensuring the stability and accuracy of the pressure application action. Simultaneously, the pressure-applying component 3331 has a through-type structure, which reduces its weight and allows for a more lightweight and flexible response.

[0047] In this embodiment, both the first fixed pulley 3332 and the second fixed pulley 3333 are disposed in the assembly cavity 312 via a rotating shaft 3334 and a bearing 3335. This installation method greatly reduces the friction when the fixed pulleys rotate, allowing the pull rope 332 to slide more smoothly when passing around the fixed pulleys.

[0048] In this embodiment, the inflatable airbag 331 has a corrugated elastic structure. When the airbag 331 is not compressed, it will expand under its own elastic force. This corrugated elastic structure design allows the airbag 331 to quickly expand and return to its original position after the pressure from the pressure-applying component 3331 is released, facilitating the rapid return of gas from the sealing airbag ring 32 to the airbag 331 and enabling convenient folding of the partition plate 31. Furthermore, the corrugated elastic structure also possesses good flexibility and durability, capable of withstanding multiple inflation and deflation cycles without damage, effectively extending the service life of the airbag 331, reducing maintenance costs, and further improving the reliability and stability of the entire negative pressure chamber inflation device, ensuring normal and stable operation in different usage scenarios.

[0049] In this embodiment, the partition plate 31 has a door groove in the middle, and a sealing door 313 for closing the door groove is hinged to one side of the partition plate 31. This design greatly improves the convenience of using the negative pressure chamber. When medical staff need to enter and exit the negative pressure chamber to care for and treat critically injured patients, they do not need to open the entire partition plate 31, but only need to open the sealing door 313. The hinged design of the sealing door 313 makes its opening and closing operation simple and convenient, and it can fit tightly in the door groove. In the closed state, it forms a whole with the partition plate 31, without affecting the sealing effect of the sealing airbag ring 32, effectively maintaining the air pressure stability in the negative pressure chamber. In addition, in order to further ensure the sealing performance, a sealing strip can be set at the contact edge between the sealing door 313 and the door groove. When the sealing door 313 is closed, the sealing strip can fit tightly, effectively preventing air leakage, further improving the sealing performance of the negative pressure chamber, and providing a more reliable environmental guarantee for the treatment of critically injured patients.

[0050] In summary, this invention discloses a negative pressure chamber based on a train carriage. Through ingenious modification of the train carriage structure, combined with advanced partitioning, sealing, and negative pressure generation technologies, this negative pressure chamber provides a reliable and efficient solution for the transfer of critically injured patients. Its unique partitioning device and inflation system make the construction and disassembly of the negative pressure chamber simple and convenient, allowing for rapid deployment in emergencies and flexible restoration of the train carriage to its original function after the mission. In practical applications, this negative pressure chamber not only effectively prevents the spread of pathogens during transportation and ensures the safety of the surrounding environment, but also provides a relatively stable and independent medical treatment space for critically injured patients, greatly improving the success rate of treatment during transfer. Furthermore, this invention emphasizes detailed design; the careful selection and layout of components such as pull ropes, fixed pulleys, pressure-applying parts, and inflatable airbags fully consider practicality, reliability, and durability. It is believed that with the widespread application of this technology, it will bring a qualitative leap to the medical rescue work of medical trains in responding to various emergencies, becoming a solid line of defense for protecting life and health.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A negative pressure chamber based on a train carriage, characterized in that: The system includes a train car, a negative pressure device, and a partition device. The partition device includes a partition plate, a sealing airbag ring, and an inflation device. The lower end of one side of the partition plate is hinged to the bottom wall of the train car via a hinge. A sealing groove is provided on the outer side of the partition plate, and the sealing airbag ring is assembled in the sealing groove. It is used to seal the gap between the partition plate and the train car when the partition plate is placed upright in the train car. The inflation device is used to inflate the sealing airbag ring when the partition plate is placed upright in the train car, so that the sealing airbag ring is in close contact with the inner wall of the train car and the inner wall of the sealing groove. When the partition plate is placed upright in the train car, it will form a sealed space with the left wall, right wall, top wall, bottom wall, and rear wall of the train car. The negative pressure device is located on the outside of the train car and communicates with the sealed space. The inflation device includes an inflatable airbag and a pressure-applying component driven by a pull cord. The inflatable airbag is connected to the sealing airbag ring. The pressure-applying component is disposed on the partition plate to apply pressure to the inflatable airbag when the pull cord is pulled, so that the gas in the inflatable airbag fills the sealing airbag ring. The partition plate has an assembly cavity whose lower end communicates with the sealing groove. The inflatable airbag is located in the assembly cavity and communicates with the sealing airbag ring through its lower end. The pressure application component is located in the assembly cavity and above the inflatable airbag. When the pull rope is pulled, the pressure application component will apply downward pressure to the upper end of the inflatable airbag. The pressure application assembly includes a pressure application member that is longitudinally slidably assembled in the assembly cavity, and a first fixed pulley and a second fixed pulley disposed in the assembly cavity. The first fixed pulley is located above the second fixed pulley, and the upper end of the pressure application member is located above the second fixed pulley. One end of the pull rope is fixedly connected to the upper end of the pressure application member, and the other end of the pull rope passes around the second fixed pulley and the first fixed pulley in sequence and passes through the partition plate on the side away from the hinge member.

2. The negative pressure chamber based on a train carriage according to claim 1, characterized in that: The pull rope has a hook fixed to its protruding end.

3. The negative pressure chamber based on a train carriage according to claim 2, characterized in that: The inner wall of the train carriage is equipped with hooks and rings that are compatible with the hook.

4. The negative pressure chamber based on a train carriage according to claim 1, characterized in that: The pressure-applying component is rectangular and has a through-structure.

5. The negative pressure chamber based on a train carriage according to claim 1, characterized in that: Both the first fixed pulley and the second fixed pulley are disposed in the assembly cavity via a rotating shaft and a bearing.

6. The negative pressure chamber based on a train carriage according to claim 1, characterized in that: The inflatable airbag has a corrugated elastic structure, and when the inflatable airbag is not compressed, it will expand and open under its own elastic force.

7. The negative pressure chamber based on a train carriage according to claim 1, characterized in that: The partition plate has a door groove in the middle, and a door for closing the door groove is hinged to one side of the partition plate.

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