A wounded isolation and evacuation cabin and its inflation sealing and locking control method

Abstract

The present application belongs to the field of medical transfer cabin sealing and locking control, and particularly relates to a wounded personnel isolated evacuation cabin and an inflation sealing and locking control method thereof, aiming to solve the problem that the existing evacuation cabin is difficult to identify abnormal sealing assembly before formal inflation, and the fixed inflation pressure cannot simultaneously adapt to the requirements of hatch sealing and transfer vibration locking. The present application comprises a lower cabin body, an upper translational cabin cover, a multi-axis positioning and pre-locking mechanism, an annular inflation sealing element, an inflation and deflation assembly, a state detection assembly and a controller; after the cabin cover is closed and each locking position is clamped in place, trial inflation is implemented, the sealing pressure requirement is determined according to the pressure rise and pump stop attenuation, the locking pressure requirement is determined according to the transfer vibration and the relationship between the pressure and the locking pre-tightening force, and the dynamic pressure maintenance and pressure relief opening are performed accordingly. The present application can improve the sealing stability, locking reliability and opening safety during the transfer process.

Description

Technical Field

[0001] This invention relates to the field of medical rescue and isolation transport equipment technology, and in particular to a wounded patient isolation and transport cabin and its inflation, sealing and locking control method. Background Technology

[0002] The evacuation and isolation compartment is used to accommodate the wounded during vehicle transport, hoisting, or ground transfer, and forms a relatively independent transfer space through the sealing structure between the compartment and the hatch. To balance the loading and unloading of the wounded and the sealing of the hatch, some evacuation compartments use movable hatch covers and inflatable seals around the hatch opening. By inflating the seals, they expand and press against the mating surface of the hatch cover.

[0003] In existing systems, after the hatch is closed, the ability to inflate is typically determined by whether the hatch has reached the closed position, or by manual verification by operators to ensure that multiple locking positions are properly engaged. Measuring only the overall position of the hatch is insufficient to reflect the actual engagement status of each locking position. If there are incomplete engagements at some locking positions, partial folding of the inflation seals, blockages in the air supply lines, insufficient inflation output, or leaks, directly increasing the pressure to the working level could cause abnormal stress on the hatch, locking mechanism, or inflation seals, and would hinder the identification of the cause of the abnormality before formal transport.

[0004] Existing inflation and sealing controls typically inflate and maintain pressure at a preset fixed pressure, with the working pressure determined primarily by the hatch sealing requirements. However, the internal pressure of the inflation seal can also affect the tightness between the hatch cover and the locking mechanism. The locking preload required for evacuation of wounded personnel after isolation varies under conditions of smooth transport, road bumps, and sudden impacts. A fixed working pressure cannot simultaneously meet both the hatch sealing requirements and the locking requirements under different transport vibration conditions. Setting the pressure too low may reduce sealing or locking stability; setting the pressure too high will increase the long-term load on the inflation seal, air supply lines, and locking structure.

[0005] Furthermore, existing evacuation chambers typically determine whether the inflatable seals have retracted before opening the hatch based on a preset depressurization time or operational experience, without considering the actual internal pressure and its changing trends. When the pressure relief valve's flow capacity decreases, the gas pipeline is blocked, or the inflatable seals fail to vent sufficiently, the hatch may be opened while the inflatable seals are still exerting a supporting effect on it, causing seal wear, increased resistance to hatch movement, or jamming of the locking structure. Therefore, a evacuation chamber for treating casualties is needed that can confirm the status of the hatch and multiple locking positions, identify sealing assembly abnormalities before formal pressurization, adjust the working pressure according to sealing requirements and transport vibration requirements, and provide opening permission information based on the actual depressurization status. Summary of the Invention

[0006] The present invention aims to solve the technical problems of existing wounded personnel isolation and transfer chambers, which make it difficult to identify abnormalities in hatch closure, locking and clamping, and sealing air circuits before formal inflation; the inability of a fixed inflation pressure to simultaneously meet the hatch sealing and locking pre-tightening requirements under different transport vibration conditions; and the lack of judgment based on the actual depressurization state before the hatch is opened.

[0007] The first aspect of the present invention provides a wounded patient isolation and transfer cabin, comprising a lower cabin body, an upper translational cabin cover, multiple multi-axis positioning pre-locking mechanisms, an annular inflatable sealing element, an inflation and deflation assembly, a status detection assembly, and a controller;

[0008] The upper translation hatch opens and closes along the lower compartment, and each of the multi-axis positioning pre-locking mechanisms is disposed between the lower compartment and the upper translation hatch, and engages when the upper translation hatch is closed; The annular inflatable seal is located around the hatch of the lower compartment and is connected to the inflation / deflation assembly. After inflation, it supports the upper sliding hatch cover, keeping each of the multi-axis positioning pre-locking mechanisms pressed. The status detection component acquires the hatch closure status, the engagement status of each of the multi-axis positioning pre-locking mechanisms, and transport vibration data; the inflation / deflation component adjusts and detects the internal pressure of the annular inflation seal. The controller is connected to the inflation / deflation assembly and the status detection assembly respectively. When the hatch is closed and the latching states meet the test inflation conditions, the controller performs test inflation. The controller determines the sealing pressure requirement based on the test inflation pressure change. The controller determines the locking pressure requirement based on the transport vibration data and the pre-calibrated relationship between the internal cavity pressure and the locking preload. The controller determines the target pressure based on the sealing pressure requirement and the locking pressure requirement and dynamically maintains the pressure. The controller releases pressure after receiving an opening request and generates opening permission information when the internal cavity pressure meets the release conditions.

[0009] Furthermore, the hatch periphery of the lower compartment is provided with an annular inflatable sealing strip groove, and the annular inflatable sealing element is embedded in the annular inflatable sealing strip groove; Multiple multi-axis positioning pre-locking mechanisms are arranged at longitudinal intervals along the lower compartment, and each multi-axis positioning pre-locking mechanism includes a locking and limiting member fixedly disposed on the lower compartment and a snap-fit ​​assembly fixedly disposed on the upper sliding hatch. The locking and limiting component is provided with a locking groove, and the locking assembly includes two blocks and a connecting shaft disposed between the two blocks. The two ends of the connecting shaft are respectively fixedly connected to the two blocks. When the upper sliding hatch is closed, the connecting shaft enters the locking slot, and the two stops are located on both sides of the locking limit member. After being inflated, the annular inflatable seal pushes against the upper sliding cover along the docking direction between the lower chamber and the upper sliding cover, causing the connecting shaft to press against the groove wall of the locking slot.

[0010] Furthermore, the inflation / deflation assembly includes an inflation pump, a pressure sensor, an electromagnetic pressure relief valve, and an inflation pipeline; The air outlet of the air pump is connected to the inner cavity of the annular air seal through the air supply pipeline. The pressure sensor is installed in the air supply pipeline. The air inlet of the electromagnetic pressure relief valve is connected to the air supply pipeline. The air outlet of the electromagnetic pressure relief valve is connected to the external environment. The status detection component includes a closed position detection component, multiple latching status detection components, and a vibration detection component. The closed position detection component is set corresponding to the closed position of the upper sliding hatch. Each latching status detection component is set on the corresponding locking limit component. The detection end of each latching status detection component faces the latching area of ​​the corresponding locking slot. The vibration detection component is fixedly set on the lower cabin. The controller is electrically connected to the air pump, the pressure sensor, the electromagnetic pressure relief valve, the closed position detection element, each of the jamming state detection elements, and the vibration detection element.

[0011] A second aspect of the present invention provides an inflation-sealing and locking control method for the aforementioned post-isolation transport chamber for wounded personnel, comprising: The system acquires the hatch closure status, the engagement status of each of the multi-axis positioning pre-locking mechanisms, the internal cavity pressure, and the transport vibration data. When the hatch is closed and each of the latching states meets the conditions for test inflation, test inflation is carried out to form a pressure rise sequence and a pump stop pressure decay sequence. The sealing assembly state is determined based on the pressure rise sequence and the pump stop pressure decay sequence, and the sealing pressure requirement is determined when the sealing assembly state is in a normal state. The disturbance level is determined based on the transport vibration data, and the locking pressure requirement is determined based on the disturbance level and the correspondence between the pre-calibrated internal cavity pressure and the locking preload. The target pressure is determined based on the sealing pressure requirement and the locking pressure requirement, and dynamic pressure holding is implemented based on the internal cavity pressure and the target pressure. Upon receiving an opening request, the system releases pressure and outputs an opening permission message when the internal cavity pressure meets the release conditions.

[0012] Furthermore, the determination of the test inflation conditions and the implementation of the test inflation include: When the hatch is closed in the closed position and all the multi-axis positioning pre-locking mechanisms are engaged in the engaged position, the test inflation conditions are met. When the hatch closure state is not the closed position state, or the locking state of any of the multi-axis positioning pre-locking mechanisms is not the locked position state, it is determined that the test inflation conditions are not met and the test inflation is prohibited. When the test inflation conditions are met, the test inflation is carried out according to the preset test inflation method, and the internal cavity pressure during the test inflation is arranged according to the collection time to form the pressure rise sequence; When the conditions for ending the test inflation are met, inflation is stopped, and the internal pressure after inflation is stopped is arranged according to the time of data collection to form the pump stop pressure decay sequence.

[0013] Furthermore, determining the sealed assembly state includes: The pressure rise characteristics and the actual inflation time to reach the end of the test inflation condition are determined according to the pressure rise sequence, and the pressure decay characteristics are determined according to the pump stop pressure decay sequence. The pressure rise characteristic, the actual inflation time, and the pressure decay characteristic are compared with the calibration ranges corresponding to the normal state, the abnormal leakage state, the abnormal inflation output state, and the abnormal effective inflation volume state, respectively, to determine the sealing assembly state. When the sealing assembly state is in the leakage abnormal state, the inflation output abnormal state, or the effective inflation volume abnormal state, subsequent inflation is stopped and abnormal information corresponding to the sealing assembly state is output.

[0014] Furthermore, determining the sealing pressure requirement includes: When the sealing assembly state is the normal state, obtain the basic sealing pressure corresponding to the annular inflatable seal and the preset sealing requirements; When the pressure decay characteristic is within the normal decay range, the basic sealing pressure is determined as the sealing pressure requirement; When the pressure attenuation characteristic exceeds the normal attenuation range but is within the preset compensation range, the basic sealing pressure is corrected according to the degree of deviation between the pressure attenuation characteristic and the normal attenuation range, and the corrected basic sealing pressure is determined as the sealing pressure requirement.

[0015] Furthermore, the determination of the disturbance level and the locking pressure requirement includes: The transport vibration data are divided according to time windows; Based on the transport vibration data within each time window, at least two of the vibration intensity characteristics, impact characteristics, and vibration change characteristics are determined to form a vibration characteristic group; The vibration characteristic group is compared with the pre-calibrated disturbance classification conditions to determine the disturbance level corresponding to each time window; Based on the first correspondence between the pre-calibrated disturbance level and the locking preload requirement, the locking preload requirement corresponding to the disturbance level is determined. Based on the second correspondence between the pre-calibrated internal cavity pressure and the locking preload, the internal cavity pressure that meets the locking preload requirement is determined as the locking pressure requirement.

[0016] Furthermore, the determination of the target pressure and the implementation of the dynamic pressure holding include: By comparing the sealing pressure requirement and the locking pressure requirement, the pressure requirement with the larger value is determined as the basic target pressure, and the basic target pressure is limited according to the allowable working pressure range to obtain the target pressure; Determine the lower and upper pressure holding limits based on the target pressure; When the internal cavity pressure is lower than the lower pressure holding limit, pressure is replenished; when the internal cavity pressure is between the lower pressure holding limit and the upper pressure holding limit, pressure replenishment and pressure release are stopped; when the internal cavity pressure is higher than the upper pressure holding limit, pressure is released. When the disturbance level increases and continues to reach the first confirmation duration, or when the disturbance level decreases and continues to reach the second confirmation duration, the locking pressure requirement and the target pressure are re-determined, wherein the second confirmation duration is longer than the first confirmation duration.

[0017] Furthermore, upon receiving the opening request, pressure is released, and when the internal cavity pressure meets the release condition, the opening permission information is output, including: Upon receiving the start request, the dynamic pressure holding is stopped and the pressure is released. The current internal cavity pressure and pressure change trend are determined based on the internal cavity pressure during the depressurization period; When the current internal cavity pressure is not higher than the preset release pressure, and the pressure change trend meets the preset pressure relief stabilization condition, it is determined that the internal cavity pressure meets the release condition, and the opening permission information is output. If the release condition is not met within the preset pressure relief time limit, output pressure relief abnormality information and prohibition of opening information.

[0018] The beneficial effects of this invention are: This invention, by setting multiple multi-axis positioning pre-locking mechanisms between the lower compartment and the upper sliding hatch, and by using an annular inflatable seal to inflate and support the upper sliding hatch, keeps the multiple multi-axis positioning pre-locking mechanisms pressed together. This allows the annular inflatable seal to simultaneously generate hatch sealing pressure and locking pre-tightening force. The multiple locking positions collectively restrict the movement of the upper sliding hatch relative to the lower compartment, which helps improve the positioning stability of the hatch under transport vibration and impact conditions.

[0019] This invention performs a trial inflation after the hatch is closed and the locking positions meet the conditions for trial inflation. It determines the sealing pressure requirement based on the pressure rise sequence and the pump stop pressure decay sequence. It can identify leaks, abnormal inflation output, and abnormal effective inflation volume before formal pressurization, and reduce abnormal stress caused by direct pressurization when there are no locking parts, folded seals, blocked air passages, or insufficient inflation output.

[0020] This invention determines the locking pressure requirement based on transport vibration data and the pre-calibrated relationship between internal cavity pressure and locking preload, and determines the target pressure based on the sealing pressure requirement and locking pressure requirement. This allows the working pressure of the annular inflatable seal to simultaneously meet the requirements of hatch sealing and mechanical locking. The target pressure can be adjusted according to transport disturbances, which, compared to fixed pressure control, helps to reduce unnecessary high-pressure operation while ensuring locking stability.

[0021] This invention implements dynamic pressure maintenance based on real-time internal cavity pressure and target pressure. Pressure is replenished when the internal cavity pressure falls below the maintenance range, and pressure is released when the internal cavity pressure exceeds the maintenance range. This reduces the impact of pressure fluctuations on the sealing condition and locking preload. By setting maintenance ranges and disturbance level change confirmation conditions, it also reduces frequent operation of the air pump and electromagnetic pressure relief valve due to short-term pressure or vibration changes.

[0022] This invention stops dynamic pressure holding and depressurizes after receiving an opening request. It determines whether the release conditions are met based on the actual internal pressure and its changing trend. If the release conditions are met, it outputs opening permission information. This avoids judging whether the hatch can be opened based solely on a fixed depressurization time, and reduces the risk of wear on the seal and jamming of the locking structure when the hatch is opened before the inflatable seal has fully retracted. Attached Figure Description

[0023] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of the wounded patient isolation and transfer cabin of the present invention when it is in a closed state; Figure 2 This is a three-dimensional structural diagram of the present invention after the upper sliding hatch of the isolation and transfer of the wounded is removed. Figure 3 This is a partial structural diagram of the multi-axis positioning pre-locking mechanism of the present invention in the latching state; Figure 4 This is a schematic diagram of the locking and limiting component of the present invention; Figure 5 This is a schematic diagram of the structure of the snap-fit ​​component of the present invention; Figure 6 This is a top view of the lower compartment structure of the present invention; Figure 7 This is the main flowchart of the inflation sealing and locking control method according to the second embodiment of the present invention; Figure 8 This is a flowchart of the steps for determining the test inflation conditions and implementing the test inflation in the second embodiment of the present invention; Figure 9 This is a flowchart of the sealing assembly state determination step in the second embodiment of the present invention; Figure 10 This is a flowchart of the steps for determining the disturbance level and locking pressure requirements in the second embodiment of the present invention. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. The following embodiments are used to illustrate the technical solutions of the present invention and do not constitute a limitation on the scope of protection of the present invention. Where there is no conflict in technical features, the technical features of each embodiment and each implementation can be combined with each other.

[0025] For ease of explanation, the opening and closing direction of the upper sliding hatch 40 relative to the lower compartment 30 is defined as longitudinal, the axial extension direction of the connecting shaft 222 is defined as transverse, and the direction in which the lower compartment 30 and the upper sliding hatch 40 are joined or separated is defined as vertical. Internal cavity pressure refers to the gas pressure within the hollow cavity of the annular inflatable seal. Hatch closure status refers to whether the upper sliding hatch 40 has reached its predetermined closed position relative to the lower compartment 30. Engagement status refers to whether each connecting shaft 222 has entered the engagement area of ​​its corresponding locking groove 23. Transfer vibration data refers to the vibration and impact data generated during the transport of the injured to the compartment after isolation, during vehicle travel, hoisting, or ground movement.

[0026] See Figure 1 The first embodiment of the present invention provides a method for transferring wounded patients to a ward after isolation.

[0027] In this embodiment, the wounded isolation and transfer cabin includes a lower cabin body 30, an upper translational cabin cover 40, multiple multi-axis positioning pre-locking mechanisms 20, an annular inflatable seal, an inflation / deflation assembly, a status detection assembly, and a controller. The upper translation hatch 40 moves and opens and closes along the lower cabin 30. Each of the multi-axis positioning pre-locking mechanisms 20 is disposed between the lower cabin 30 and the upper translation hatch 40 and engages when the upper translation hatch 40 is closed. The annular inflatable seal is located around the hatch of the lower chamber 30 and is connected to the inflation / deflation assembly. After inflation, it supports the upper translational hatch 40, keeping each of the multi-axis positioning pre-locking mechanisms 20 pressed. The status detection component acquires the hatch closure status, the engagement status of each of the multi-axis positioning pre-locking mechanisms 20, and transport vibration data; the inflation / deflation component adjusts and detects the internal pressure of the annular inflation seal. The controller is connected to the inflation / deflation assembly and the status detection assembly respectively. When the hatch is closed and the latching states meet the test inflation conditions, the controller performs test inflation. The controller determines the sealing pressure requirement based on the test inflation pressure change. The controller determines the locking pressure requirement based on the transport vibration data and the pre-calibrated relationship between the internal cavity pressure and the locking preload. The controller determines the target pressure based on the sealing pressure requirement and the locking pressure requirement and dynamically maintains the pressure. The controller releases pressure after receiving an opening request and generates opening permission information when the internal cavity pressure meets the release conditions.

[0028] In practice, the lower compartment 30 forms the foundation for the isolation and transfer of wounded personnel. The interior of the lower compartment 30 forms a wounded personnel receiving cavity, which is used to accommodate wounded personnel, stretchers, oxygen supply lines, intravenous infusion lines, and vital sign monitoring equipment. The upper part of the lower compartment 30 forms a hatch through which wounded personnel and stretchers are placed or removed.

[0029] The lower hull 30 is formed by combining a metal load-bearing frame with bulkhead panels, or by molding fiber-reinforced composite materials with corresponding load-bearing strength. The structural strength of the lower hull 30 is determined according to the loads on the wounded, stretchers, medical equipment, hoisting loads, and transfer impact loads, so as to ensure that the hull does not undergo permanent deformation that affects sealing and locking during vehicle transportation, hoisting and handling, and ground movement.

[0030] The lower hull 30 has an installation compartment formed at its end, side, or bottom. This installation compartment is isolated from the casualty containment cavity by a partition and is used to centrally install the inflation pump, pressure sensor, electromagnetic pressure relief valve, gas pipeline, controller, and electrical connection components. The isolation between the installation compartment and the casualty containment cavity reduces the space occupied by the inflation / deflation components and facilitates centralized maintenance of pumps, valves, gas line connectors, and electrical components.

[0031] The lower hull 30 is also equipped with a transparent observation window, a sealed wiring connector, an oxygen supply interface, a negative pressure interface, an infusion interface, and a vital signs monitoring interface. The lower hull 30 is externally equipped with lifting supports and a movable support structure to accommodate vehicle loading, lifting, and ground movement. The aforementioned auxiliary structures are sealed to the bulkhead to prevent their installation locations from creating leakage channels that connect to the external environment.

[0032] The upper sliding hatch 40 is disposed above the lower compartment 30 and connected to the lower compartment 30 via a sliding guide structure. The sliding guide structure includes a guide bearing portion disposed on the lower compartment 30 and a sliding portion or rolling portion disposed on the upper sliding hatch 40. The guide bearing portion extends longitudinally along the lower compartment 30, and the upper sliding hatch 40 moves along the guide bearing portion between an open position and a closed position.

[0033] When the upper sliding hatch 40 is in the open position, the hatch opening of the lower hull 30 is exposed. When the upper sliding hatch 40 is in the closed position, it covers the hatch opening of the lower hull 30. A mechanical stop is provided at the closed end of the sliding guide structure. The mechanical stop is used to limit the closing end point of the upper sliding hatch 40 and provide a stable position reference for detecting the hatch closure status.

[0034] The upper sliding hatch 40 adopts a sliding opening and closing mechanism, eliminating the need for a space above the lower compartment 30 for the hatch to flip, making it suitable for vehicle interiors, emergency rescue passages, and other transport environments with limited overhead space. During the sliding of the upper sliding hatch 40 to the closed position, each multi-axis positioning pre-locking mechanism 20 engages as the upper sliding hatch 40 moves, eliminating the need to individually tighten bolts or operate individual locks after the hatch is closed, thus shortening the closing time for transporting injured personnel after isolation.

[0035] Multiple multi-axis positioning pre-locking mechanisms 20 are arranged longitudinally at intervals along the lower hull 30 and are respectively located between the lower hull 30 and the upper sliding hatch 40. The multiple multi-axis positioning pre-locking mechanisms 20 are respectively arranged at the front, middle and rear of the lower hull 30. The specific number and spacing are determined according to the length, weight, hatch size and force distribution of the upper sliding hatch 40.

[0036] When the upper sliding hatch 40 is closed, each multi-axis positioning pre-locking mechanism 20 engages simultaneously or sequentially, restricting the movement of the upper sliding hatch 40 relative to the lower hatch 30 from multiple positions. The simultaneous engagement at multiple positions reduces the possibility of the upper sliding hatch 40 experiencing localized lifting, lateral displacement, or longitudinal movement under vehicle bumps or hoisting impacts.

[0037] An annular inflatable seal is continuously installed along the periphery of the hatch of the lower hull 30, forming a closed hollow inner cavity. The annular inflatable seal is made of an elastic material with airtightness and the ability to undergo repeated elastic deformation. The temperature resistance range, aging resistance, and allowable deformation of the elastic material are determined based on the subsequent transport environment and the number of inflation and deflation cycles.

[0038] When the annular inflatable seal is in a depressurized state, it retracts to the lower compartment 30 side to reduce friction between the upper sliding hatch 40 and the annular inflatable seal during sliding opening and closing. When the annular inflatable seal is in an inflated state, it expands circumferentially along the hatch opening and continuously presses against the mating surface of the upper sliding hatch 40, thereby sealing the mating gap between the upper sliding hatch 40 and the lower compartment 30.

[0039] After being inflated, the annular inflatable seal also vertically supports the upper sliding hatch 40, keeping the multiple multi-axis positioning pre-locking mechanisms 20, which have already been engaged, pressed tightly. Thus, the internal pressure of the annular inflatable seal forms both the circumferential sealing pressure of the hatch and the locking pre-tightening force of the multiple multi-axis positioning pre-locking mechanisms 20. The simultaneous participation of the same annular inflatable seal in sealing and locking compensates for manufacturing tolerances, assembly deviations, and localized gaps that develop over long-term use between the upper sliding hatch 40 and the lower hatch 30.

[0040] The inflation / deflation assembly communicates with the inner cavity of the annular inflation seal, and is used to supply gas to the annular inflation seal, maintain the inner cavity pressure, and release the gas in the inner cavity. The status detection assembly acquires the hatch closure status of the upper translation hatch 40, the engagement status of each multi-axis positioning pre-locking mechanism 20, and the transport vibration data of the lower cabin 30.

[0041] The controller receives data from the status detection component and the inflation / deflation component, and performs inflation / deflation control according to the pre-stored test inflation parameters, sealing status calibration data, disturbance classification conditions, the relationship between internal cavity pressure and locking preload, dynamic pressure holding parameters, and release conditions.

[0042] Once the upper sliding hatch 40 reaches the closed position and all multi-axis positioning pre-locking mechanisms 20 have engaged, the controller first performs a trial inflation. The trial inflation uses a pressure lower than the normal operating pressure, causing a detectable pressure change in the annular inflation seal, but does not immediately apply the full pre-tightening force under normal transport conditions to the multi-axis positioning pre-locking mechanism 20.

[0043] The controller identifies the annular inflation seal, air supply lines, and inflation output status based on the pressure rise during the trial inflation phase and the pressure decay after inflation stops. When the seal assembly is normal, the controller determines the sealing pressure requirement to meet the hatch sealing requirements.

[0044] The controller also determines the current disturbance level based on the transport vibration data and determines the locking pressure requirement through a pre-calibrated relationship between the internal cavity pressure and the locking preload. The controller compares the sealing pressure requirement with the locking pressure requirement and forms a target pressure based on both.

[0045] When the vehicle is in a stable driving state, the target pressure is mainly determined by the sealing pressure requirement. When the vehicle enters a bumpy section or when the injured are transported to the isolation chamber and are subjected to an impact, the target pressure increases with the locking pressure requirement to increase the locking preload between the connecting shaft 222 and the locking groove 23.

[0046] Upon receiving the opening request, the controller stops the dynamic pressure holding and releases the gas from the annular inflatable seal. The controller determines whether the annular inflatable seal has completed its depressurization and retraction based on the actual internal pressure and its trend, and generates an opening permission message when the release conditions are met.

[0047] The opening permission message is output via a display interface, indicator lights, audible prompts, or a communication terminal. Upon receiving the permission message, the operator pushes the upper sliding hatch 40 to open. If the release conditions are not met, the controller outputs a prohibition on opening message or a pressure relief anomaly message. This process ensures that the hatch opening operation is based on the actual pressure state, reducing wear on the seal and jamming of the locking structure caused by forcibly pushing the upper sliding hatch 40 while the annular inflatable seal is still in an inflated state.

[0048] The above structure enables the closure of the upper sliding hatch 40, the mechanical locking at multiple positions, the inflation sealing and locking pre-tightening of the annular inflatable seal, the pressure regulation during the transfer process, and the depressurization before opening to form a continuous structural and control coordination relationship, which can improve the sealing stability and locking stability of the evacuation chamber after the wounded are isolated during the transfer process.

[0049] See Figure 2 Furthermore, the hatch periphery of the lower compartment 30 is provided with an annular inflatable sealing strip groove 10, and the annular inflatable sealing element is embedded in the annular inflatable sealing strip groove 10. Multiple multi-axis positioning pre-locking mechanisms 20 are arranged at longitudinal intervals along the lower compartment 30. Each multi-axis positioning pre-locking mechanism 20 includes a locking and limiting member 21 fixedly disposed on the lower compartment 30 and a snap-fit ​​assembly 22 fixedly disposed on the upper translational hatch 40. The locking limit member 21 is provided with a locking groove 23, and the locking assembly 22 includes two blocks 221 and a connecting shaft 222 disposed between the two blocks 221. The two ends of the connecting shaft 222 are respectively fixedly connected to the two blocks 221. When the upper sliding hatch 40 is closed, the connecting shaft 222 enters the locking groove 23, and the two stops 221 are respectively located on both sides of the locking limit member 21; After the annular inflatable seal is inflated, it supports the upper translational cover 40 along the docking direction between the lower chamber 30 and the upper translational cover 40, so that the connecting shaft 222 presses against the groove wall of the locking groove 23.

[0050] See Figure 6 In specific implementation, the annular inflatable sealing strip groove 10 extends continuously along the periphery of the hatch of the lower compartment 30, forming a closed-loop groove. The cross-section of the annular inflatable sealing strip groove 10 is adapted to the installation part of the annular inflatable seal, and the bottom and sides of the annular inflatable seal are embedded in the annular inflatable sealing strip groove 10.

[0051] The annular inflatable seal is held within the annular inflatable sealing strip groove 10 by interference fit, pressure strip fixing, adhesive fixing, or embedded snap-fit ​​structure. The air inlet of the annular inflatable seal passes through the groove wall of the annular inflatable sealing strip groove 10 and is connected to the air supply pipeline through a sealing joint.

[0052] When the annular inflatable seal is in the depressurized state, its top surface is lower than or flush with the upper mating surface of the lower compartment 30. When the annular inflatable seal is in the inflated state, its top surface extends out of the annular inflatable sealing strip groove 10 and presses against the upper sliding hatch 40.

[0053] The annular inflatable sealing strip groove 10 restricts the movement of the annular inflatable seal along the circumference and lateral direction of the hatch, keeping the annular inflatable seal in a predetermined sealing position during repeated inflation and deflation. The retraction setting under depressurization also reduces scratching of the sealing surface of the annular inflatable seal during the translation of the upper sliding hatch cover 40.

[0054] See Figure 3 Each locking and limiting component 21 is fixedly installed on the side or hatch edge bearing portion of the lower hull 30. Each snap-fit ​​assembly 22 is fixedly installed on the corresponding side of the upper sliding hatch cover 40. The locking and limiting components 21 are fixed to the lower hull 30 by bolts, riveting, or welding, and the snap-fit ​​assemblies 22 are fixed to the upper sliding hatch cover 40 by fasteners or welding.

[0055] The positions of the locking limit member 21 and the snap-fit ​​assembly 22 correspond to each other according to the closing trajectory of the upper sliding hatch 40, so that when the upper sliding hatch 40 moves to the predetermined closed position, the connecting shaft 222 can enter the corresponding locking slot 23.

[0056] See Figure 4 A locking groove 23 is formed on the locking stop member 21. The locking groove 23 is a forked groove that closes towards the connecting shaft 222. The width of the locking groove 23 gradually decreases from the opening inward, and the inner end of the locking groove 23 forms a limiting area to restrict the connecting shaft 222 from continuing to move in the closing direction.

[0057] The opening width of the locking groove 23 is adapted to the outer diameter of the connecting shaft 222, allowing the connecting shaft 222 to enter the locking groove 23 as the upper sliding hatch 40 moves. The gradually narrowing locking groove 23 can guide the connecting shaft 222 during its entry and reduce the possibility that the connecting shaft 222 may retract in the opposite direction of the opening of the locking groove 23 under transport vibration.

[0058] See Figure 5The snap-fit ​​assembly 22 includes two stops 221 and a connecting shaft 222. The connecting shaft 222 is a cylindrical shaft, and its two ends are fixedly connected to the two stops 221 respectively. A gap area is formed between the opposing inner surfaces of the two stops 221 to accommodate the locking limit member 21, and the width of the gap area is adapted to the thickness of the locking limit member 21 at the snap-fit ​​position.

[0059] The outer dimensions of the stop 221 are larger than the opening width of the locking groove 23, preventing the stop 221 from passing through the locking groove 23 with the connecting shaft 222. When the upper sliding hatch 40 is closed, the connecting shaft 222 enters the locking groove 23, and the locking limit member 21 enters the gap area between the two stops 221. The two stops 221 are located on the lateral sides of the locking limit member 21, respectively.

[0060] The connecting shaft 222 engages with the locking groove 23 to restrict the upper sliding hatch 40 from moving longitudinally in the opposite direction. The two stops 221 engage with the sides of the locking limit member 21 to restrict the upper sliding hatch 40 from moving laterally. After the annular inflatable seal is inflated, it supports the upper sliding hatch 40 vertically, causing the connecting shaft 222 to press against the groove wall of the locking groove 23 and restricting the upper sliding hatch 40 from separating vertically from the lower hatch 30.

[0061] The engagement of the connecting shaft 222 with the locking slot 23, the physical limiting of the two stops 221 on both sides of the locking limit member 21, and the vertical support force generated by the annular inflatable seal together form a multi-directional locking relationship. The locking relationship does not rely on a single frictional force for maintenance and can respectively limit the longitudinal movement, lateral displacement, and vertical tilting of the upper sliding hatch 40.

[0062] When the internal pressure of the annular inflatable seal increases, the vertical support force acting on the upper sliding hatch 40 increases, and the locking preload between each connecting shaft 222 and the corresponding locking groove 23 increases accordingly. The correspondence between the internal pressure and the locking preload is established through prototype calibration.

[0063] During the calibration process, multiple stable internal cavity pressures are applied to the annular inflatable seal, and the locking preload force corresponding to each multi-axis positioning pre-locking mechanism 20 is obtained. In one calibration method, force detection components are set at the force-bearing positions of each locking groove 23 to measure the contact preload force between the connecting shaft 222 and the corresponding locking groove 23 wall.

[0064] In another calibration method, the hatch 40 is moved upward to apply a separation load opposite to the direction of the annular inflatable seal support, and the loads when each connecting shaft 222 undergoes relative displacement are recorded to determine the locking and holding capability of each multi-axis positioning pre-locking mechanism 20.

[0065] For the same calibrated internal cavity pressure, the minimum value among the locking preload forces corresponding to multiple multi-axis positioning pre-locking mechanisms 20 is determined as the system locking preload force corresponding to the calibrated internal cavity pressure. The correspondence between internal cavity pressure and locking preload force is established according to the system locking preload force to ensure that the locking pressure requirement determined according to the correspondence can enable all multi-axis positioning pre-locking mechanisms 20 to meet the corresponding locking preload force requirements.

[0066] The above structure gives the internal pressure of the annular inflatable seal a clear mechanical target, providing a feasible structural basis for determining the locking pressure requirement and adjusting the internal pressure based on the transport vibration data.

[0067] Furthermore, the inflation / deflation assembly includes an inflation pump, a pressure sensor, an electromagnetic pressure relief valve, and an inflation pipeline; The air outlet of the air pump is connected to the inner cavity of the annular air seal through the air supply pipeline. The pressure sensor is installed in the air supply pipeline. The air inlet of the electromagnetic pressure relief valve is connected to the air supply pipeline. The air outlet of the electromagnetic pressure relief valve is connected to the external environment. The status detection component includes a closed position detection component, multiple latching status detection components, and a vibration detection component. The closed position detection component is set corresponding to the closed position of the upper translation hatch 40. Each latching status detection component is set on the corresponding locking limit component 21. The detection end of each latching status detection component faces the latching area of ​​the corresponding locking groove 23. The vibration detection component is fixedly set on the lower cabin 30. The controller is electrically connected to the air pump, the pressure sensor, the electromagnetic pressure relief valve, the closed position detection element, each of the jamming state detection elements, and the vibration detection element.

[0068] In practice, the air pump, pressure sensor, electromagnetic pressure relief valve, controller, and part of the gas supply pipeline are housed in the mounting compartment of the lower hull 30. The air pump is used to deliver gas through the gas supply pipeline to the inner cavity of the annular gas-filled seal. The rated output pressure of the air pump is higher than the normal operating pressure of the annular gas-filled seal. The controller controls the start and stop of the air pump based on the data output by the pressure sensor to limit the actual inner cavity pressure.

[0069] The outlet of the air pump is connected to the inlet of the air supply pipeline, and the outlet of the air supply pipeline is connected to the inlet of the annular air-filled seal. When the air supply pipeline passes through the bulkhead between the mounting cavity and the annular air-filled seal groove 10, it is sealed to the bulkhead through an airtight joint.

[0070] A one-way pressure holding valve is installed in the gas supply line. The one-way pressure holding valve is located between the air pump and the annular air seal, and is used to prevent the gas in the annular air seal from being discharged in the reverse direction through the air pump when the air pump stops running or the system is powered off.

[0071] A pressure sensor is installed in the gas supply line downstream of the one-way pressure holding valve, enabling the detection of the actual internal pressure of the annular inflation seal even after the inflation pump has stopped. The pressure sensor's detection range covers the test inflation pressure, normal operating pressure, and the upper limit of the allowable operating pressure. The pressure sensor outputs pressure data to the controller according to a preset sampling period. This pressure data is used to generate pressure rise sequences, pump stop pressure decay sequences, dynamic pressure holding feedback data, and pressure relief process data.

[0072] The inlet of the electromagnetic pressure relief valve is connected to the gas supply pipeline, and the outlet of the electromagnetic pressure relief valve is connected to the external environment. In an embodiment with a pressure relief buffer space, the outlet of the electromagnetic pressure relief valve is connected to the external environment through the pressure relief buffer space. When the electromagnetic pressure relief valve is closed, the gas supply pipeline and the annular inflatable seal remain sealed. When the electromagnetic pressure relief valve is open, the gas in the annular inflatable seal is discharged through the gas supply pipeline and the electromagnetic pressure relief valve.

[0073] The flow area of ​​the electromagnetic pressure relief valve is determined based on the inner cavity volume of the annular inflatable seal and the preset pressure relief time limit, so that the annular inflatable seal can retract within the preset pressure relief time limit.

[0074] The gas pipeline is also equipped with a mechanical pressure relief valve and a manual pressure relief valve. The mechanical pressure relief valve opens automatically when the internal pressure reaches the valve's opening pressure, providing independent overpressure protection in case of abnormalities in the controller, pressure sensor, or gas pump control.

[0075] The manual pressure relief valve is located in an accessible position outside the cabin. In the event of a failure of the electromagnetic pressure relief valve or the power supply system, the operator can release the gas in the annular inflation seal via the manual pressure relief valve, allowing the upper sliding hatch 40 to open after pressure relief is complete.

[0076] The closed position detection component includes a closed detection part fixedly installed at the closed end of the lower compartment 30 and a closed trigger part installed on the upper translation hatch 40. When the upper translation hatch 40 reaches the closed position, the closed trigger part enters the detection range of the closed detection part, causing the closed position detection component to output a closed position status.

[0077] The closed position detection device uses a limit switch, proximity sensor, Hall sensor, or photoelectric sensor. After the closed position detection device continuously outputs a closed signal for the required closure confirmation time, the controller determines the hatch closed state as the fully closed state, thereby reducing false judgments caused by contact jitter or mechanical rebound.

[0078] Each latching status detection element corresponds to a locking limit element 21. The detection end of each latching status detection element faces the latching area inside the corresponding locking groove 23 and is offset from the groove wall area of ​​the connecting shaft 222 that mainly bears the locking load.

[0079] When the connecting shaft 222 enters the locking area of ​​the locking slot 23, the locking status detection element outputs a locked-in state. When the connecting shaft 222 does not enter the locking area or exits from the locking area, the locking status detection element outputs an unlocked state.

[0080] When the connecting shaft 222 is made of metal, an inductive proximity sensor is used for the locking status detection. When the connecting shaft 222 or the stop 221 is equipped with a magnetic trigger, a Hall sensor is used for the locking status detection. The locking status detection is offset from the main force-bearing area of ​​the locking groove 23, which reduces the possibility of mechanical damage to the locking status detection caused by the locking load transmitted by the connecting shaft 222.

[0081] The vibration detection device is fixedly mounted on the load-bearing frame of the lower chamber 30 or on a mounting part rigidly connected to the load-bearing frame. The vibration detection device uses a triaxial accelerometer, with the three detection directions corresponding to the longitudinal, transverse, and vertical directions of the lower chamber 30, respectively.

[0082] The vibration detection device is installed in a location that avoids flexible connecting pipes, thin plates that can vibrate independently, and loose accessories, so that the vibration detection results reflect the overall transport status of the lower cabin 30.

[0083] The controller is an embedded controller with analog input interfaces, digital input interfaces, digital communication interfaces, and pump / valve drive interfaces. The controller receives data from pressure sensors, closed position detectors, various engagement status detectors, and vibration detectors, and outputs control commands to the air pump and electromagnetic pressure relief valve.

[0084] The controller internally stores test inflation parameters, pressure calibration ranges for normal and abnormal states, basic sealing pressure, disturbance classification conditions, the correspondence between disturbance level and locking preload requirements, the correspondence between internal cavity pressure and locking preload, allowable working pressure range, dynamic pressure holding parameters, and release conditions.

[0085] In one embodiment, a temperature sensor is installed near the annular inflation seal or on the gas supply line. The controller performs temperature correction on pressure changes based on the gas temperature to distinguish between pressure changes caused by ambient temperature changes and pressure changes caused by gas leakage. The temperature detection results serve as correction data for pressure decay characteristics and are not used as the sole condition for permitting trial inflation.

[0086] The aforementioned air circuit connections, status detection, and controller connections enable the hatch closure, point-to-point locking, internal cavity pressure, and transport vibration to all have corresponding data acquisition structures. This also allows the air pump and electromagnetic pressure relief valve to operate in a closed loop based on the detection results, thereby improving the feasibility of sealing and locking control and the ability to identify faults.

[0087] See Figure 7The second embodiment of the present invention provides an inflation-sealed locking control method for the above-mentioned post-isolation transport cabin for wounded personnel, comprising the following steps: S10, acquire the hatch closure status, the engagement status of each multi-axis positioning pre-locking mechanism 20, the internal cavity pressure and transport vibration data; S20, when the hatch is closed and each of the latching states meets the test inflation conditions, test inflation is performed to form a pressure rise sequence and a pump stop pressure decay sequence. S30, determine the sealing assembly state based on the pressure rise sequence and the pump stop pressure decay sequence, and determine the sealing pressure requirement when the sealing assembly state is in a normal state. S40, determine the disturbance level based on the transport vibration data, and determine the locking pressure requirement based on the disturbance level and the correspondence between the pre-calibrated internal cavity pressure and the locking preload. S50, determine the target pressure based on the sealing pressure requirement and the locking pressure requirement, and implement dynamic pressure holding based on the internal cavity pressure and the target pressure; S60: After receiving the opening request, depressurize and output opening permission information when the internal cavity pressure meets the release conditions.

[0088] The hatch closure status and the status of each latch are used to determine whether a test inflation is permitted. The pressure rise sequence and pump shutdown pressure decay sequence generated during the test inflation are used to determine the seal assembly status. The seal pressure requirement is established when the seal assembly status is normal.

[0089] The vibration data from the transport process is converted into a locking pressure requirement based on the disturbance level, locking preload requirement, and the correlation between the internal cavity pressure and the locking preload. The sealing pressure requirement and the locking pressure requirement are used together to determine the target pressure. The target pressure and the real-time internal cavity pressure are used to implement dynamic pressure holding. An opening request triggers a pressure relief process; the internal cavity pressure during the pressure relief process is used to determine whether the release conditions are met.

[0090] In step S10, the closure position detection device outputs the hatch closure status. The hatch closure status includes a fully closed state and an unclosed state. After the closure position detection device continuously outputs a closure signal for the required closure confirmation time, the controller determines the hatch closure status as fully closed. If the closure signal is interrupted or does not continuously reach the required closure confirmation time, the controller determines the hatch closure status as unclosed.

[0091] Each engagement status detection element outputs the engagement status of the corresponding multi-axis positioning pre-locking mechanism 20. Let the number of multi-axis positioning pre-locking mechanisms 20 be... , No. The card connection status is as follows: When the first When the connecting shaft 222 enters the engagement area of ​​the corresponding locking slot 23, This indicates that the card is in place. When the first... When the connecting shaft 222 does not enter the engagement area This indicates that the device is not connected.

[0092] Arrange the various locking states according to the positions of the multiple multi-axis positioning pre-locking mechanisms 20 to form a set of locking states: ; The snap-in state set is used to determine whether all multi-axis positioning pre-locking mechanisms 20 have completed snap-in, and to determine the position of the incomplete snap-in when there is an incomplete snap-in state.

[0093] The pressure sensor collects the internal pressure of the annular inflatable seal according to the pressure sampling cycle and saves each pressure data point along with the acquisition time. After the pressure data enters the controller, zero-point correction, range conversion, and abnormal data checks are performed. If the continuous pressure data exceeds the pressure sensor's range, the pressure data is interrupted, or the pressure data is invalid, the controller outputs a pressure detection abnormality message and prohibits trial inflation.

[0094] The vibration detection device collects longitudinal, lateral, and vertical acceleration data of the lower cabin 30 according to the vibration sampling period. The controller performs zero-bias correction on the three-axis acceleration data and separates the static gravity component and dynamic vibration component to obtain transport vibration data used for disturbance level judgment.

[0095] Pressure data, hatch closure status, engagement status, and transport vibration data are recorded according to a unified time reference, enabling the controller to perform status judgments and controls based on the data generation time. This data acquisition method provides input data with a clear source and time relationship for subsequent test inflation permit determination, seal status diagnosis, and locking pressure determination.

[0096] See Figure 8 In step S20, the determination of the test inflation conditions and the implementation of the test inflation include: S21, when the hatch is closed in the closed position and all the multi-axis positioning pre-locking mechanisms 20 are engaged in the engaged position, it is determined that the test inflation condition is met. S22, when the hatch closure state is not the closed position state, or the locking state of any of the multi-axis positioning pre-locking mechanisms 20 is not the locked position state, it is determined that the test inflation conditions are not met and the test inflation is prohibited. S23, when the test inflation conditions are met, the test inflation is carried out according to the preset test inflation method; S24, Arrange the internal pressure during the test inflation period according to the collection time to form the pressure rise sequence; S25, when the test inflation end condition is met, inflation is stopped, and the internal cavity pressure after inflation is stopped is arranged according to the collection time to form the pump stop pressure decay sequence.

[0097] In step S21, the controller simultaneously reads the hatch closure status and the set of latching statuses. Only when the hatch closure status is in the fully closed state and all latching statuses in the set of latching statuses are in the fully latched state will the controller generate a test inflation permit status.

[0098] The closed position detection device is used to confirm the overall position of the upper translation hatch 40, and each locking status detection device is used to confirm whether each connecting shaft 222 has entered the corresponding locking slot 23. The two types of detection results together constitute the conditions for trial inflation permission.

[0099] In step S22, when the hatch is in an open state, the controller keeps the air pump stopped and outputs information indicating that the hatch is not closed. When the hatch is in a closed position but at least one engagement state is not engaged, the controller determines the incomplete engagement of the multi-axis positioning pre-locking mechanism 20 based on the engagement state set and outputs the corresponding position.

[0100] The controller does not force the disconnected connecting shaft 222 into the locking groove 23 by increasing the internal cavity pressure, so as to prevent the annular inflatable seal from supporting the sliding hatch 40 under abnormal force in the partially disconnected state.

[0101] In step S23, the preset test inflation mode is defined by at least one of the following: test inflation target pressure, test inflation duration, and test inflation cycle. When the test inflation target pressure is used for control, the inflation pump stops running after the internal cavity pressure reaches the test inflation target pressure. When the test inflation duration is used for control, the inflation pump runs for the preset duration. When the test inflation cycle is used for control, the inflation pump operates in a pulse mode that alternates between running and stopping periods.

[0102] In one embodiment, the target pressure for the test inflation is set to 20% to 40% of the rated operating pressure, so that a recognizable pressure response is generated during the test inflation phase, while limiting the locking preload applied to the multi-axis positioning pre-locking mechanism 20.

[0103] In step S24, it is assumed that data is collected during the trial inflation period. The first stress data point, the... The pressure data is as follows: The corresponding collection time is The pressure rise sequence is represented as: ; The controller simultaneously saves the start time of the air pump, the target inflation pressure, the time when the target inflation pressure is reached, and the pressure data during the inflation test. The pressure rise sequence reflects the overall status of the air pump output, the unobstructedness of the air supply pipeline, and the effective inflation volume of the annular inflation seal.

[0104] In step S25, the conditions for ending the test inflation include the internal pressure reaching the target pressure for the test inflation, the actual inflation time reaching the preset test inflation time, or the pulse inflation completing the preset cycle.

[0105] After the test inflation ends, the controller stops the inflation pump and keeps the electromagnetic pressure relief valve closed, continuing to collect the internal cavity pressure during the holding period. Assume the pressure collected during the holding period... The first stress data point, the... The pressure data is as follows: The corresponding collection time is The pump shutdown pressure decay sequence is represented as: ; The pump shutdown pressure decay sequence reflects the pressure holding status of the annular gas-filled seal, gas pipeline, and valves after the gas supply is stopped. By generating a pressure rise sequence and a pump shutdown pressure decay sequence before the formal pressurization, abnormalities in the gas path and seals can be identified at lower internal pressures, reducing the possibility of abnormal states entering the formal pressure holding process.

[0106] In one embodiment, the pressure sensor collects the internal cavity pressure at a sampling frequency of 20 times per second, with a holding period of 5 seconds after the pump stops. These parameters are adjusted based on the air pump flow rate, the internal cavity volume of the annular air seal, and the rate of pressure change.

[0107] See Figure 9 In step S30, determining the sealing assembly state includes: S31, determine the pressure rise characteristics and the actual inflation time to reach the end condition of the test inflation according to the pressure rise sequence, and determine the pressure decay characteristics according to the pump stop pressure decay sequence; S32, compare the pressure rise characteristic, the actual inflation time and the pressure decay characteristic with the calibration ranges corresponding to the normal state, the abnormal leakage state, the abnormal inflation output state and the abnormal effective inflation volume state respectively, and determine the sealing assembly state. S33, when the sealing assembly state is the leakage abnormal state, the inflation output abnormal state, or the effective inflation volume abnormal state, stop subsequent inflation and output the abnormal information corresponding to the sealing assembly state.

[0108] In step S31, the pressure rise characteristics are represented by the average rise rate of the pressure rise sequence, the segmented rise rate, the fitting slope, or the time required to reach multiple pressure ratio points.

[0109] When using the fitting slope, the acquisition time is taken as the independent variable and the internal pressure as the dependent variable. A linear fit is performed on the pressure rise sequence to obtain the pressure rise characteristics. Represented as: ; in, This represents the average value at each data collection time. This represents the average pressure of each cavity in the pressure rise sequence.

[0110] The actual inflation time is the duration from when the inflation pump starts running until the conditions for the end of the test inflation are met. The pressure decay characteristics are expressed as the pressure difference at the beginning and end of the holding period, the pressure drop per unit time, or the normalized pressure decay rate.

[0111] Normalized pressure decay rate Represented as: ; Using a normalized pressure decay rate can reduce the impact of different initial test gas pressures on the leak detection results.

[0112] The calibration ranges corresponding to normal state, leakage abnormal state, inflation output abnormal state, and effective inflation volume abnormal state were determined through prototype testing.

[0113] During normal calibration, ensure that the upper sliding hatch 40 and each multi-axis positioning pre-locking mechanism 20 are correctly closed, and that the annular inflation seal, air supply pipeline, inflation pump and valves are all in normal condition. Repeat the test inflation and statistically analyze the pressure rise characteristics, actual inflation time and pressure decay characteristics.

[0114] When calibrating abnormal leakage conditions, a controlled leak port is set in the annular inflatable seal or gas pipeline, and the pressure decay characteristics corresponding to different leakage levels are recorded.

[0115] When calibrating for abnormal inflation output, reduce the output capacity of the inflation pump or limit the flow rate of the gas delivery pipeline, and record the changes in pressure rise characteristics and actual inflation time.

[0116] When calibrating the abnormal state of the effective inflation volume, the gas pipeline is partially blocked, the annular inflation seal is partially folded or subjected to local clamping, and the changes in the pressure rise characteristics and the actual inflation time are recorded.

[0117] In step S32, the pressure decay characteristics are first used to determine whether the system has entered the calibration range corresponding to the abnormal leakage state. When the pressure decay characteristics enter the calibration range corresponding to the abnormal leakage state, the sealing assembly state is determined to be an abnormal leakage state.

[0118] When the pressure decay characteristic does not fall within the calibration range corresponding to the abnormal leakage state, the pressure rise characteristic and the actual inflation time are combined to form a joint pressure response characteristic, and the joint pressure response characteristic is compared with the calibration range corresponding to the normal state, the abnormal inflation output state, and the abnormal effective inflation volume state, respectively.

[0119] When the combined pressure response characteristics match the calibration range corresponding to an abnormal inflation output state, the sealed assembly state is determined to be an abnormal inflation output state. When the combined pressure response characteristics match the calibration range corresponding to an abnormal effective inflation volume state, the sealed assembly state is determined to be an abnormal effective inflation volume state. When the combined pressure response characteristics match the calibration range corresponding to a normal state, the sealed assembly state is determined to be a normal state.

[0120] When the pressure rise characteristic and the actual inflation time point to different states, or when the combined pressure response characteristic does not fall within either calibration range, the controller stops subsequent inflation, outputs a pressure response inconsistency message, and performs a trial inflation again after completing structural and pneumatic circuit checks. This process prevents the same set of pressure data from being simultaneously classified into different abnormal states.

[0121] In step S33, when the sealing assembly is in an abnormal leakage state, the controller stops the air pump, releases the test air pressure, and outputs information about leakage in the annular air seal or air circuit.

[0122] When the sealed assembly is in an abnormal inflation output state, the controller outputs an inflation pump or air supply passage check message.

[0123] When the sealed assembly is in an abnormal state of effective inflation volume, the controller outputs information indicating blockage of the air supply line, folding of the annular inflation seal, or partial clamping.

[0124] Before the abnormal condition is eliminated, the controller will not enter the formal pressurization and dynamic pressure holding phases, thereby avoiding the masking of structural or gas path failures by continuously replenishing pressure.

[0125] When the sealing assembly is in a normal state, the determination of the sealing pressure requirement includes: S34, obtain the basic sealing pressure corresponding to the annular inflatable seal and the preset sealing requirements; S35, when the pressure attenuation characteristic is within the normal attenuation range, the basic sealing pressure is determined as the sealing pressure requirement; S36, when the pressure attenuation characteristic exceeds the normal attenuation range but is within the preset compensation range, the basic sealing pressure is corrected according to the degree of deviation between the pressure attenuation characteristic and the normal attenuation range, and the corrected basic sealing pressure is determined as the sealing pressure requirement.

[0126] In step S34, the basic sealing pressure is obtained through a prototype sealing test. Under the condition that the upper translation hatch 40 and each multi-axis positioning pre-locking mechanism 20 are correctly closed, the annular inflatable seal is inflated step by step, and the air tightness, liquid tightness, or contaminant barrier performance of the hatch docking gap is tested.

[0127] The minimum stable internal cavity pressure that meets the preset sealing requirements is determined as the basic sealing pressure. Corresponding basic sealing pressures are established for annular inflatable seals of different materials, cross-sectional dimensions, and hatch sizes.

[0128] In step S35, when the pressure decay characteristic is within the normal decay range, it indicates that the annular inflatable seal and the gas pipeline have normal pressure holding capacity, and the controller determines the base sealing pressure as the sealing pressure requirement. This process can reduce unnecessary high-pressure operation when the sealing condition is normal.

[0129] In step S36, when the pressure attenuation characteristic exceeds the normal attenuation range but is still within the preset compensation range, the controller corrects the basic sealing pressure according to the degree of deviation between the pressure attenuation characteristic and the boundary of the normal attenuation range.

[0130] Sealing pressure requirements Represented as: ; in, Based on sealing pressure, To allow for the upper limit of the sealing compensation pressure, This is the attenuation compensation coefficient. This refers to the deviation of the pressure decay characteristic from the normal decay range.

[0131] When the pressure decay characteristics exceed the preset compensation range, compensation is no longer provided by increasing the pressure; instead, leakage anomaly handling is initiated. This limited compensation method can adapt to performance variations within the allowable range of the seal, while preventing the masking of actual leakage through continuous pressure increases.

[0132] In the implementation of the temperature detection device, the pressure data during the test filling phase and the pressure data during the pump shutdown phase are converted to the same reference temperature before the pressure decay characteristics are determined. The temperature correction is used to reduce the impact of gas thermal expansion and contraction caused by changes in ambient temperature on leak detection.

[0133] See Figure 10 In step S40, determining the disturbance level and the locking pressure requirement includes: S41, divide the transport vibration data according to the time window; S42, based on the transport vibration data within each time window, determine at least two of the vibration intensity characteristics, impact characteristics, and vibration change characteristics to form a vibration characteristic group; S43, compare the vibration characteristic group with the pre-calibrated disturbance classification conditions to determine the disturbance level corresponding to each time window; S44, determine the locking preload requirement corresponding to the disturbance level based on the first correspondence between the pre-calibrated disturbance level and the locking preload requirement; S45, based on the second correspondence between the pre-calibrated internal cavity pressure and the locking preload, the internal cavity pressure that meets the locking preload requirement is determined as the locking pressure requirement.

[0134] In step S41, the controller divides the triaxial transport vibration data into continuous time windows. Adjacent time windows are connected or partially overlap. The length of the time window is determined based on the vehicle vibration period, impact duration, and pressure response time of the inflation / deflation assembly, ensuring that each time window contains sufficient continuous vibration data to reflect the current transport status.

[0135] In one implementation, the vibration detection device collects triaxial acceleration data at a sampling frequency of 200 times per second, and the controller forms a vibration analysis time window every 2 seconds. The sampling frequency and time window are adjusted according to the vibration frequency range of the target transfer platform.

[0136] In step S42, the triaxial dynamic accelerations within each time window are synthesized. Synthetic dynamic acceleration at each sampling point Represented as: ; in, , and These are the dynamic accelerations in the longitudinal, lateral, and vertical directions, respectively.

[0137] Vibration intensity characteristics are derived from the root mean square value of the synthesized dynamic acceleration within a time window: ; in, This represents the number of vibration sampling points within the current time window.

[0138] Impact characteristics are derived from the composite dynamic acceleration peak value: ; Vibration variation characteristics are characterized by the maximum rate of change of acceleration between adjacent sampling points: ; in, The sampling time interval between adjacent vibration sampling points, with the maximum value between the second vibration sampling point and the [number missing]th sampling point within the current time window. The distance between vibration sampling points is determined.

[0139] The controller selects at least two of the vibration intensity characteristics, impact characteristics, and vibration change characteristics to form a vibration characteristic group, so as to simultaneously reflect continuous vibration, instantaneous impact, and vibration change rate.

[0140] In one implementation, a transport disturbance index is formed based on vibration intensity characteristics, impact characteristics, and vibration change characteristics: ; in, For transport disturbance indicators, , and The weights are the corresponding features, and . , and These are the calibration reference values ​​for vibration intensity characteristics, impact characteristics, and vibration change characteristics, respectively.

[0141] In step S43, the disturbance grading conditions are formed through a vibration table test or an actual transfer test. During the test, the wounded are isolated and transferred to the cabin under static, stable transfer, general vibration transfer, and strong vibration transfer states, respectively. The vibration characteristic groups corresponding to each state are recorded, and the relative displacement, collision, and reverse withdrawal of each connecting shaft 222 in the corresponding locking groove 23 are observed.

[0142] The disturbance classification conditions are formed based on the correspondence between the vibration characteristic set and the locking stability. The controller compares the current vibration characteristic set with the disturbance classification conditions to determine the disturbance level corresponding to the current time window.

[0143] In step S44, a first correspondence between the disturbance level and the locking preload requirement is established through locking stability tests under different disturbance levels.

[0144] For each disturbance level, the internal pressure of the annular inflatable seal is gradually changed, and the relative displacement, collision, and disengagement status of each multi-axis positioning pre-locking mechanism 20 are detected respectively. The minimum system locking preload required to maintain stable engagement of all multi-axis positioning pre-locking mechanisms 20 under the corresponding disturbance level is determined as the locking preload requirement corresponding to the disturbance level.

[0145] In step S45, a second correspondence is established through a calibration test of the internal cavity pressure and the locking preload. During the calibration test, multiple internal cavity pressures are applied to the annular inflatable seal, and the locking preload corresponding to each multi-axis positioning pre-locking mechanism 20 is measured.

[0146] For each calibrated cavity pressure, the minimum value among multiple locking preloads is determined as the system locking preload corresponding to the calibrated cavity pressure, resulting in a pressure-preload data pair: ; in, The number of pressure-preload calibration data pairs. Indicates the first A calibrated internal cavity pressure, Indicates the first The system locking preload force corresponding to the calibrated internal cavity pressure.

[0147] A monotonic correspondence between the internal cavity pressure and the system locking preload is established based on pressure-preload data. The controller queries this correspondence based on the current locking preload requirement and determines the internal cavity pressure required to achieve the locking preload requirement as the locking pressure requirement.

[0148] By establishing a correspondence using the minimum locking preload of each multi-axis positioning prelocking mechanism 20, it is possible to avoid insufficient locking preload in other locking positions due to calibration based solely on a single locking position.

[0149] In step S50, the determination of the target pressure and the implementation of the dynamic pressure holding include: S51, compare the sealing pressure requirement and the locking pressure requirement, determine the pressure requirement with the larger value as the basic target pressure, and limit the basic target pressure according to the allowable working pressure range to obtain the target pressure; S52, determine the lower pressure holding limit and the upper pressure holding limit according to the target pressure, and perform pressure replenishment when the internal cavity pressure is lower than the lower pressure holding limit, stop pressure replenishment and pressure relief when the internal cavity pressure is between the lower pressure holding limit and the upper pressure holding limit, and perform pressure relief when the internal cavity pressure is higher than the upper pressure holding limit; S53, when the disturbance level increases and continues to reach the first confirmation duration, or when the disturbance level decreases and continues to reach the second confirmation duration, the locking pressure requirement and the target pressure are re-determined, wherein the second confirmation duration is longer than the first confirmation duration.

[0150] In step S51, the basic target pressure is taken as the larger value between the sealing pressure requirement and the locking pressure requirement. Target pressure Represented as: ; in, To meet sealing pressure requirements, To lock in pressure requirements, To set an upper limit for allowable work pressure.

[0151] The upper limit of the allowable working pressure is the minimum value among the allowable pressure of the annular inflatable seal, the allowable pressure of the gas pipeline, and the equivalent allowable pressure calculated based on the correspondence between the allowable load and internal pressure of the multi-axis positioning pre-locking mechanism 20 and the system locking pre-tightening force.

[0152] When the sealing pressure requirement is higher than the locking pressure requirement, the target pressure meets the hatch sealing requirements. When the locking pressure requirement is higher than the sealing pressure requirement, the target pressure meets the locking preload requirements under the current disturbance level. When the basic target pressure exceeds the upper limit of the allowable working pressure, the controller will not continue to increase the pressure and will output a pressure requirement exceeding limit information.

[0153] In step S52, the controller sets a lower pressure limit and a higher pressure limit on both sides of the target pressure: , ; in, To maintain the lower limit of pressure, To maintain the upper limit of pressure, To allow for pressure drop, To allow for the amount of pressure increase.

[0154] When the internal pressure falls below the lower limit of the pressure holding range, the controller starts the air pump to replenish the pressure. When the internal pressure recovers to the target pressure or the middle of the pressure holding range, the controller stops the air pump.

[0155] When the internal pressure is between the lower and upper pressure holding limits, both the air pump and the solenoid pressure relief valve remain closed. When the internal pressure exceeds the upper pressure holding limit, the controller opens the solenoid pressure relief valve, and closes it after the internal pressure drops to near the target pressure.

[0156] When pulse pressure compensation is used, the air pump operates alternately during the running period and the shutdown observation period. After each run, the controller collects the internal pressure during the shutdown observation period to determine the pressure compensation response.

[0157] The controller tracks the number of pressurization cycles and the cumulative running time of the air pump per unit time. If the number of pressurization cycles exceeds the preset number, or if the air pump fails to restore the internal pressure to above the lower pressure limit after running for the preset time, the controller outputs a continuous leakage message or an abnormal air output message.

[0158] The aforementioned hysteresis and pulse control can reduce frequent pump and valve operations caused by slight pressure fluctuations and can identify continuous pressure loss during the pressure holding phase.

[0159] In step S53, when the disturbance level increases and continues to reach the first confirmation duration, the controller re-determines the locking preload and locking pressure requirements based on the increased disturbance level and updates the target pressure.

[0160] When the disturbance level decreases and continues to reach the second confirmation duration, the controller re-determines the locking pressure requirement and target pressure based on the decreased disturbance level.

[0161] The second confirmation time is longer than the first confirmation time, which makes the target pressure rise faster when the vibration intensifies and decrease more slowly when the vibration weakens, thereby reducing repeated inflation and deflation caused by short-term vibration changes.

[0162] During dynamic pressure holding, the controller continuously acquires the engagement status of each multi-axis positioning pre-locking mechanism 20. When any engagement status changes from engaged to disengaged, the controller stops the air pump and opens the electromagnetic pressure relief valve, outputting disengaged position and locking anomaly information. The controller continues to maintain locking by increasing the internal cavity pressure, even in the event of mechanical engagement failure.

[0163] During dynamic pressure holding, the controller also verifies the pressure detection status, vibration detection status, and internal cavity pressure change status.

[0164] When the pressure sensor output is interrupted, exceeds the range, or continuously generates invalid pressure data, the controller stops the air pump, does not output start-up permission information, and outputs pressure detection abnormality information.

[0165] When the vibration detection output is interrupted or the transport vibration data is invalid, the controller stops reducing the locking pressure requirement based on the real-time transport vibration data and implements dynamic pressure maintenance using a preset safety locking pressure corresponding to the preset safety disturbance level. The preset safety locking pressure does not exceed the upper limit of the allowable working pressure.

[0166] When the internal pressure exceeds the pressure holding limit and continues to rise, the controller opens the solenoid pressure relief valve. When the internal pressure reaches the opening pressure of the mechanical pressure relief valve, the mechanical pressure relief valve independently releases pressure.

[0167] When the internal pressure continues to drop but remains above the minimum safe pressure, the controller performs pressure replenishment according to the limited number of times and outputs a sealing abnormality message. When the internal pressure falls below the minimum safe pressure, the controller stops increasing the target pressure and outputs a stop transfer or emergency response message.

[0168] In step S60, after receiving the opening request, pressure is released, and when the internal cavity pressure meets the release condition, the opening permission information is output, including: S61, after receiving the start request, stop the dynamic pressure holding and release the pressure; S62, determine the current internal cavity pressure and pressure change trend based on the internal cavity pressure during the depressurization period; S63, when the current internal cavity pressure is not higher than the preset release pressure, and the pressure change trend meets the preset pressure relief stabilization condition, determine that the internal cavity pressure meets the release condition, and output the opening permission information; S64, if the release condition is not met within the preset pressure relief time limit, output pressure relief abnormality information and prohibition of opening information.

[0169] In step S61, the activation request is input via an operation button, display interface, or external control terminal. Upon receiving the activation request, the controller stops the air pump, prohibits subsequent pressurization, and opens the electromagnetic pressure relief valve. During pressure relief, the controller continuously collects the internal pressure and outputs information on pressure relief until the release conditions are confirmed.

[0170] In step S62, the current internal pressure is taken as the most recent effective pressure data or the average of multiple consecutive pressure data during the pressure relief period. The pressure change trend is determined based on the continuous pressure data during the pressure relief period and is expressed as the pressure drop per unit time, the fitted slope of the drop, or the absolute value of the difference between adjacent pressures.

[0171] In the initial stage of depressurization, the internal pressure continues to decrease. In the final stage of depressurization, the internal pressure approaches ambient pressure and tends to stabilize. By combining the current internal pressure with the pressure change trend, we can avoid relying solely on a fixed depressurization duration, which may fail to reflect issues such as blockage of the electromagnetic pressure relief valve or obstruction of the air passage.

[0172] In step S63, the preset release pressure is lower than the pressure corresponding to the significant supporting force exerted by the annular inflatable seal on the upper sliding hatch 40. The preset pressure relief stabilization condition is that the absolute value of the pressure change rate is continuously lower than the pressure relief stabilization threshold and continues to reach the release confirmation time.

[0173] The release condition is expressed as: ,and ; in, The current internal pressure, To pre-set pressure release, This represents the absolute value of the rate of pressure change during the depressurization period. This is the pressure relief stability threshold.

[0174] When the current internal pressure is not higher than the preset release pressure and the pressure change trend meets the preset pressure relief stability condition, the controller determines that the annular inflatable seal has released the top support pre-tightening of the upper sliding hatch 40 and outputs opening permission information.

[0175] After receiving the opening permission information, the operator pushes the upper sliding hatch 40 to move in the opening direction, so that each connecting shaft 222 disengages from the corresponding locking slot 23 and opens the hatch.

[0176] In step S64, when the electromagnetic pressure relief valve has been opened but the current internal pressure is still higher than the preset release pressure within the preset pressure relief time limit, or the pressure change trend does not meet the preset pressure relief stability condition, the controller outputs pressure relief abnormal information and prohibition of opening information.

[0177] The operator checks the venting status of the electromagnetic pressure relief valve, gas supply line, and annular inflation seal. If electronic pressure relief fails, the gas inside the cavity is released via the manual pressure relief valve. Once the pressure sensor detects that the release conditions are met again, the controller outputs an opening permission message.

[0178] When the pressure sensor malfunctions and cannot determine the release condition, the controller will not output an opening permission message. The operator will release the pressure manually via the pressure relief valve and open the upper sliding hatch 40 after confirming that the annular inflation seal has retracted according to the preset emergency operating procedure.

[0179] During a complete operation, the operator first puts the annular inflatable seal in a depressurized and retracted state, moves the upper sliding hatch 40 to the open position, and places the wounded and stretcher into the lower hatch 30.

[0180] Then, the upper sliding hatch 40 is pushed to move towards the closed position. Each connecting shaft 222 enters the corresponding locking slot 23, and the two stops 221 are located on both sides of the corresponding locking limit member 21.

[0181] After the closed position detection device outputs the closed position status and the fully engaged status detection device outputs the engaged position status, the controller performs a trial inflation.

[0182] When the pressure rise sequence and the pump stop pressure decay sequence are within the calibration range corresponding to the normal state, the controller will determine the seal assembly state as the normal state and determine the seal pressure requirement.

[0183] After the injured are isolated and transferred to the cabin, the controller determines the disturbance level based on the transfer vibration data, determines the locking pressure requirement through the first and second correspondences, and forms the target pressure by the larger of the sealing pressure requirement and the locking pressure requirement, and implements dynamic pressure maintenance around the target pressure.

[0184] When the vehicle enters a bumpy road section, the disturbance level increases and continues to reach the first confirmation time. The controller increases the locking pressure requirement and target pressure, thereby increasing the locking preload between each connecting shaft 222 and the corresponding locking slot 23.

[0185] After the vehicle leaves the bumpy road section, the disturbance level decreases and continues to reach the second confirmation duration, at which point the controller reduces the locking pressure requirement and target pressure.

[0186] Upon arrival at the transfer destination, the controller receives the opening request, stops dynamic pressure holding, and begins depressurization. Once the current internal pressure and pressure change trend both meet the release conditions, the controller outputs an opening permission message.

[0187] Thus, the hatch closure, point-by-point locking, test inflation diagnosis, sealing pressure determination, locking pressure adjustment, dynamic pressure holding, and opening pressure relief are completed sequentially according to the test results. This can meet the hatch sealing requirements while maintaining the locking stability of multiple multi-axis positioning pre-locking mechanisms 20 based on actual transport disturbances.

[0188] The terms “first”, “second”, etc., are used to distinguish similar objects, not to describe or indicate a specific order or sequence.

[0189] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0190] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A method for transferring wounded soldiers to a quarantine ward, characterized in that, It includes a lower hull (30), an upper sliding hatch (40), multiple multi-axis positioning pre-locking mechanisms (20), an annular inflation seal, an inflation / deflation assembly, a status detection assembly, and a controller; The upper translation hatch (40) moves and opens and closes along the lower compartment (30), and each of the multi-axis positioning pre-locking mechanisms (20) is located between the lower compartment (30) and the upper translation hatch (40), and engages when the upper translation hatch (40) is closed. The annular inflatable seal is located around the hatch of the lower chamber (30) and is connected to the inflation / deflation assembly. After inflation, it supports the upper translational hatch cover (40) so that each of the multi-axis positioning pre-locking mechanisms (20) remains pressed. The state detection component acquires the hatch closure status, the snap-fit ​​status of each of the multi-axis positioning pre-locking mechanisms (20), and transport vibration data. The inflation and deflation component adjusts and detects the internal pressure of the annular inflation seal. The controller is connected to the inflation / deflation assembly and the status detection assembly respectively. When the hatch is closed and the latching states meet the test inflation conditions, the controller performs test inflation. The controller determines the sealing pressure requirement based on the test inflation pressure change. The controller determines the locking pressure requirement based on the transport vibration data and the pre-calibrated relationship between the internal cavity pressure and the locking preload. The controller determines the target pressure based on the sealing pressure requirement and the locking pressure requirement and dynamically maintains the pressure. The controller releases pressure after receiving an opening request and generates opening permission information when the internal cavity pressure meets the release conditions.

2. The patient isolation and transfer ward according to claim 1, characterized in that, The hatch periphery of the lower compartment (30) is provided with an annular inflatable sealing strip groove (10), and the annular inflatable sealing element is embedded in the annular inflatable sealing strip groove (10). Multiple multi-axis positioning pre-locking mechanisms (20) are arranged at longitudinal intervals along the lower compartment (30). Each multi-axis positioning pre-locking mechanism (20) includes a locking limit member (21) fixedly disposed on the lower compartment (30) and a snap-fit ​​assembly (22) fixedly disposed on the upper translation hatch (40). The locking limit member (21) is provided with a locking groove (23), and the locking assembly (22) includes two blocks (221) and a connecting shaft (222) disposed between the two blocks (221). The two ends of the connecting shaft (222) are respectively fixedly connected to the two blocks (221); When the upper sliding hatch (40) is closed, the connecting shaft (222) enters the locking groove (23), and the two stops (221) are located on both sides of the locking limit member (21); after the annular inflatable seal is inflated, it pushes against the upper sliding hatch (40) along the docking direction of the lower hatch (30) and the upper sliding hatch (40), so that the connecting shaft (222) presses against the groove wall of the locking groove (23).

3. The patient isolation and transfer ward according to claim 2, characterized in that, The inflation / deflation assembly includes an inflation pump, a pressure sensor, an electromagnetic pressure relief valve, and an inflation pipeline; The air outlet of the air pump is connected to the inner cavity of the annular air seal through the air supply pipeline. The pressure sensor is installed in the air supply pipeline. The air inlet of the electromagnetic pressure relief valve is connected to the air supply pipeline. The air outlet of the electromagnetic pressure relief valve is connected to the external environment. The status detection component includes a closed position detection component, multiple latching status detection components and a vibration detection component. The closed position detection component is set in the closed position corresponding to the upper translational hatch (40). Each latching status detection component is set in the corresponding locking limit component (21). The detection end of each latching status detection component faces the latching area corresponding to the locking groove (23). The vibration detection component is fixedly set in the lower hatch (30). The controller is electrically connected to the air pump, the pressure sensor, the electromagnetic pressure relief valve, the closed position detection element, each of the jamming state detection elements, and the vibration detection element.

4. A method for controlling the inflation and sealing of a wounded person isolation and transfer chamber as described in any one of claims 1 to 3, characterized in that, include: The closed state of the hatch, the engagement state of each of the multi-axis positioning pre-locking mechanisms (20), the internal pressure, and the transfer vibration data are obtained. When the hatch is closed and each of the latching states meets the conditions for test inflation, test inflation is carried out to form a pressure rise sequence and a pump stop pressure decay sequence. The sealing assembly state is determined based on the pressure rise sequence and the pump stop pressure decay sequence, and the sealing pressure requirement is determined when the sealing assembly state is in a normal state. The disturbance level is determined based on the transport vibration data, and the locking pressure requirement is determined based on the disturbance level and the correspondence between the pre-calibrated internal cavity pressure and the locking preload. The target pressure is determined based on the sealing pressure requirement and the locking pressure requirement, and dynamic pressure holding is implemented based on the internal cavity pressure and the target pressure. Upon receiving an opening request, the system releases pressure and outputs an opening permission message when the internal cavity pressure meets the release conditions.

5. The method for controlling the inflation, sealing, and locking of a wounded soldier isolation and transfer chamber according to claim 4, characterized in that, The determination of the test inflation conditions and the implementation of the test inflation include: When the hatch is closed in the closed position and all the multi-axis positioning pre-locking mechanisms (20) are engaged in the engaged position, the test inflation conditions are met. When the hatch closure state is not the closed position state, or the locking state of any of the multi-axis positioning pre-locking mechanisms (20) is not the locked position state, it is determined that the test inflation conditions are not met and the test inflation is prohibited. When the test inflation conditions are met, the test inflation is carried out according to the preset test inflation method, and the internal cavity pressure during the test inflation is arranged according to the collection time to form the pressure rise sequence; When the conditions for ending the test inflation are met, inflation is stopped, and the internal pressure after inflation is stopped is arranged according to the time of data collection to form the pump stop pressure decay sequence.

6. The method for controlling the inflation, sealing, and locking of a wounded soldier isolation and transfer chamber according to claim 5, characterized in that, The determination of the sealing assembly state includes: The pressure rise characteristics and the actual inflation time to reach the end of the test inflation condition are determined according to the pressure rise sequence, and the pressure decay characteristics are determined according to the pump stop pressure decay sequence. The pressure rise characteristic, the actual inflation time, and the pressure decay characteristic are compared with the calibration ranges corresponding to the normal state, the abnormal leakage state, the abnormal inflation output state, and the abnormal effective inflation volume state, respectively, to determine the sealing assembly state. When the sealing assembly state is the leakage abnormal state, the inflation output abnormal state, or the effective inflation volume abnormal state, subsequent inflation is stopped and the abnormal information corresponding to the sealing assembly state is output.

7. The method for controlling the inflation, sealing, and locking of a wounded soldier isolation and transfer chamber according to claim 6, characterized in that, The determination of the sealing pressure requirement includes: When the sealing assembly state is the normal state, obtain the basic sealing pressure corresponding to the annular inflatable seal and the preset sealing requirements; When the pressure decay characteristic is within the normal decay range, the basic sealing pressure is determined as the sealing pressure requirement; When the pressure attenuation characteristic exceeds the normal attenuation range but is within the preset compensation range, the basic sealing pressure is corrected according to the degree of deviation between the pressure attenuation characteristic and the normal attenuation range, and the corrected basic sealing pressure is determined as the sealing pressure requirement.

8. The method for controlling the inflation, sealing, and locking of a wounded soldier isolation and transfer chamber according to claim 4, characterized in that, The determination of the disturbance level and the locking pressure requirement includes: The transport vibration data are divided according to time windows; Based on the transport vibration data within each time window, at least two of the vibration intensity characteristics, impact characteristics, and vibration change characteristics are determined to form a vibration characteristic group; The vibration characteristic group is compared with the pre-calibrated disturbance classification conditions to determine the disturbance level corresponding to each time window; Based on the first correspondence between the pre-calibrated disturbance level and the locking preload requirement, the locking preload requirement corresponding to the disturbance level is determined. Based on the second correspondence between the pre-calibrated internal cavity pressure and the locking preload, the internal cavity pressure that meets the locking preload requirement is determined as the locking pressure requirement.

9. The method for controlling the inflation, sealing, and locking of a wounded soldier isolation and transfer chamber according to claim 8, characterized in that, The determination of the target pressure and the implementation of the dynamic pressure holding include: By comparing the sealing pressure requirement and the locking pressure requirement, the pressure requirement with the larger value is determined as the basic target pressure, and the basic target pressure is limited according to the allowable working pressure range to obtain the target pressure; Determine the lower and upper pressure holding limits based on the target pressure; When the internal cavity pressure is lower than the lower pressure holding limit, pressure is replenished; when the internal cavity pressure is between the lower pressure holding limit and the upper pressure holding limit, pressure replenishment and pressure release are stopped; when the internal cavity pressure is higher than the upper pressure holding limit, pressure is released. When the disturbance level increases and continues to reach the first confirmation duration, or when the disturbance level decreases and continues to reach the second confirmation duration, the locking pressure requirement and the target pressure are re-determined, wherein the second confirmation duration is longer than the first confirmation duration.

10. The method for controlling the inflation, sealing, and locking of a wounded person isolation and transfer chamber according to claim 9, characterized in that, Upon receiving the opening request, depressurization is performed, and when the internal cavity pressure meets the release condition, the opening permission information is output, including: Upon receiving the start request, the dynamic pressure holding is stopped and the pressure is released. The current internal cavity pressure and pressure change trend are determined based on the internal cavity pressure during the depressurization period; When the current internal cavity pressure is not higher than the preset release pressure, and the pressure change trend meets the preset pressure relief stabilization condition, it is determined that the internal cavity pressure meets the release condition, and the opening permission information is output. If the release condition is not met within the preset pressure relief time limit, output pressure relief abnormality information and prohibition of opening information.

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