Gas tank storage cabinet

Abstract

The application relates to the field of container storage devices, and provides a gas tank storage cabinet, which comprises a cabinet body, a placing table and an elastic element. The placing table is provided with a plurality of placing positions capable of placing a plurality of gas tanks. The placing table is rotatably or slidably arranged on the cabinet body. The elastic element is arranged between the cabinet body and the placing table. When the placing table bears different masses, the placing table can rotate by a certain angle or slide by a certain distance by relying on gravity. The application does not need an electric driving structure. The placing table is automatically replaced by cooperation of gravity and the elastic element, so that the junction of empty bottles and full bottles of gas tanks is always in a fixed position, confusion is avoided, taking and placing are convenient, safety hidden troubles of electric elements in a combustible and explosive environment are eliminated, and manufacturing cost is reduced.

Description

Technical Field

[0001] This application relates to the field of container storage devices, and more particularly to gas tank storage cabinets. Background Technology

[0002] In large hospitals and other gas-using facilities, there are numerous pressure vessels such as oxygen cylinders, which are frequently moved around. In existing technologies, gas cylinders are typically stored in densely packed storage cabinets. Due to the lack of effective physical partitioning or automatic identification mechanisms, unused full cylinders are easily mixed with used empty cylinders. This forces staff to individually check the status of each cylinder when retrieving it, which is not only inefficient but also prone to delays in emergency situations due to mistakenly taking an empty cylinder. To solve the separation problem, some solutions use multiple independent storage cabinets to store full and empty cylinders separately, but this significantly increases the equipment's footprint, which is not ideal for space-constrained medical facilities. Therefore, there is an urgent need for a storage device that can automatically manage full and empty cylinders within a single cabinet without relying on complex electronic control systems. Summary of the Invention

[0003] To address the problems of existing technologies where multiple empty and full gas cylinders are stored together, leading to errors in retrieval and large space occupation, this application proposes a gas cylinder storage cabinet that uses gravity to adaptively adjust the placement of gas cylinders in different states.

[0004] According to this application, a gas cylinder storage cabinet is provided, including a cabinet body, a placement platform and an elastic element. The placement platform has multiple placement positions to accommodate multiple gas cylinders. The placement platform is installed in the cabinet body in a manner that allows it to rotate or slide relative to the cabinet body. The elastic element is disposed between the cabinet body and the placement platform, so that when the placement platform bears different masses, it can rotate at a certain angle or slide a certain distance by gravity.

[0005] Compared with the prior art, the gas tank storage cabinet of this application has the following advantages: The gas cylinder storage cabinet provided in this application occupies a small area, does not require an electrically driven structure, and can automatically rotate or slide under the action of gravity. The boundary between empty and full oxygen cylinders is always in the same position. In this way, empty and full oxygen cylinders are always in the same position, which makes them less likely to be confused, making them easier to retrieve and put away, and also making them more neatly arranged. Especially for flammable and explosive gas cylinders, which need to be kept away from electrical appliances, the gas cylinder storage cabinet of this application can achieve automatic rotation without any electrical control device, making it convenient to use and low in manufacturing cost.

[0006] In one embodiment, the placement platform is mounted on a rotating shaft, and the placement platform can move and rotate axially relative to the rotating shaft. Gravity acts only in the axial direction, and changes in axial distance can cause changes in potential energy, which, together with the elastic element, can drive the placement platform to rotate in the forward or reverse direction.

[0007] In one embodiment, the placement platform is provided with a threaded hole, and the rotating shaft is provided with an external thread that matches the threaded hole. The helix angle of the threaded hole is greater than the self-locking angle, allowing the placement platform to rotate relative to the rotating shaft under axial force. The threaded structure can convert the axial force into a circumferential rotational driving force. Generally, a helix angle greater than 10 degrees is sufficient to avoid self-locking in steel structures. The axial positive and negative forces can drive the placement platform to rotate in both directions.

[0008] In one embodiment, the elastic element is a torsion spring, which provides axial and circumferential elastic force, thus better driving the placement platform to rotate.

[0009] In one embodiment, the placement platform is installed on an upwardly inclined sliding platform. The placement platform is directly or indirectly connected to the elastic element, either by a rope or by pressing directly onto the elastic element, which provides elasticity to the placement platform.

[0010] In one possible implementation, by replacing a full gas cylinder with an empty one, the placement platform can rotate or slide one or more placement positions by a distance. Preferably, sliding one placement position is sufficient, so that each time it is picked up or placed, it is in the same position, making it less likely to confuse empty and full oxygen cylinders, and making it more convenient to pick up and place.

[0011] In one embodiment, a locking device is provided between the placement platform and the cabinet so that the placement platform can be locked relative to the cabinet at a certain position or angle. When empty oxygen cylinders and full oxygen cylinders are picked up and put down, the weight of the placement platform will change. In order to ensure that the placement platform does not slide or rotate at this time, a locking device is required. After the empty oxygen cylinders and full oxygen cylinders are picked up and put down, the locking device is unlocked, and the placement platform begins to rotate or slide to the next placement position.

[0012] In one embodiment, the cabinet is equipped with a cabinet door, and the cabinet door is linked with a locking device so that the locking device locks when the cabinet door is opened and unlocks when the cabinet door is closed, allowing the placement table to rotate or slide relative to the cabinet. This makes it convenient to unlock and lock the placement table without any additional action, and the locking is more stable.

[0013] In one embodiment, the locking device includes a ratchet disc and a ratchet bar. When the cabinet door is opened, the ratchet disc and ratchet bar engage to lock the door. When the cabinet door is closed, the ratchet bar rotates or moves to disengage from the ratchet disc to unlock the door. This structure is simple and easy to manufacture. The ratchet disc can be annularly mounted on a disc-shaped platform. If the platform is a long, straight strip, the ratchet disc is also long and straight. The ratchet bar is an elastic structure or fixed by a spring, allowing it to separate from the ratchet disc under external force to unlock the door. After the external force is removed, the ratchet bar engages with the ratchet disc to lock the door.

[0014] In one embodiment, a space is provided between empty gas cylinders and full gas cylinders, and the cabinet door is located in front of the full gas cylinders adjacent to the space and the corresponding position of the empty space. This allows the empty gas cylinders to be placed to one side first, and then the full gas cylinders to be removed.

[0015] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0016] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which: In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0017] Figure 1 This illustration shows a schematic diagram of a disc-shaped structure for the placement platform of the gas tank storage cabinet according to an embodiment of this application; Figure 2 This application shows Figure 1 Enlarged view of a portion of point A in the middle; Figure 3 This illustration shows a half-sectional view of the placement platform of the gas tank storage cabinet in an embodiment of this application, which is a disc-shaped structure. Figure 4 This illustration shows a rectangular platform for the gas tank storage cabinet in an embodiment of this application. Figure 5 This illustration shows a schematic diagram of a gas cylinder storage cabinet with a full gas cylinder in place, according to an embodiment of this application. Figure 6 This illustration shows a schematic diagram of the storage cabinet containing an empty gas cylinder according to an embodiment of this application. Figure 7 This diagram illustrates the placement of empty gas cylinders in a gas cylinder storage cabinet according to an embodiment of this application.

[0018] Explanation of the labels in the diagram: 1-Cabinet body; 2-Placement platform; 3-Elastic element; 4-Rotating shaft; 5-Threaded hole; 6-Sliding platform; 7-Locking device; 8-Cabinet door; 9-Ratchet plate; 10-Ratchet rod; 11-Placement position; 12-Gas canister; 13-Unlocking rod; 14-Clutch ball; 15-Clutch seat. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] Example 1 like Figure 1 and Figure 3 As shown, this embodiment provides a gas cylinder storage cabinet, which includes a cabinet body 1, a placement platform 2, and an elastic element 3. The cabinet body 1 serves as the supporting base and external protective shell for the entire storage cabinet, providing an installation reference for the internal components. The placement platform 2 has multiple placement positions 11 capable of holding multiple gas cylinders 12, used to support and position the gas cylinders 12. The placement platform 2 is mounted on the cabinet body 1 in a rotatable manner relative to the cabinet body 1, thus possessing the freedom of movement to adjust its position relative to the cabinet body 1. The elastic element 3 is disposed between the cabinet body 1 and the placement platform 2, serving as the core medium for mechanical balance and energy conversion, realizing the conversion between gravitational potential energy and elastic potential energy. Figure 4 As shown, the placement platform 2 is installed on the sliding platform 6 of the cabinet 1 in a way that allows it to slide relative to the cabinet 1. When the gravity of the placement platform 2 changes, it can slide a certain distance relative to the sliding platform 6.

[0022] Specifically, the core of this embodiment lies in constructing a purely mechanical adaptive drive system based on changes in gravitational potential energy. In this system, the connection between the elastic element 3, the placement platform 2, and the cabinet 1 is configured to form a mechanical coupling mechanism, allowing the placement platform 2 to rotate by a certain angle or slide a certain distance under gravity when carrying different masses. This drive mechanism does not rely on motors, sensors, or any electrical control components, but directly utilizes the physical effects generated by the weight change of the gas canister 12 to achieve automatic repositioning. For example, when the operator removes a fully loaded gas canister 12 from the placement position 11 and replaces it with an empty gas canister, the total mass carried by the placement platform 2 decreases, causing the original balance between gravity and the restoring force of the elastic element 3 to be broken. At this time, the change in gravitational potential energy is converted into mechanical energy to drive the placement platform 2 to move. Under the assistance or dominant action of the elastic element 3, the placement platform 2 is driven to produce a certain displacement relative to the cabinet 1, thereby automatically moving the next full gas canister to be retrieved to the preset operating position.

[0023] It should be understood that the "rotation or sliding" mentioned in this embodiment is a generalization of the motion of the platform 2, intended to cover all technical solutions that utilize mass difference to drive displacement, and should not be construed as limited to a specific transmission structure. For example... Figure 1 As shown, the placement platform 2 can be constructed as a disc-shaped structure, and the workstation can be switched by rotating around the central axis; or as shown in the figure. Figure 4 As shown, the placement platform 2 can also be constructed to adapt to a long, narrow trajectory, achieving workstation switching through linear reciprocating sliding. Regardless of the specific motion trajectory used, as long as its power source essentially originates from the gravitational imbalance caused by changes in the mass of the gas tank 12, and is adjusted by the elastic element 3 to achieve a definite displacement response, it falls within the protection scope of this embodiment. Furthermore, this driving process is automatic, continuous, and reversible. That is, it can not only automatically fill the gap after a full bottle is removed, but also automatically reverse and reset or adjust to the next empty bottle storage position based on the increase in weight after an empty bottle is placed in. This achieves dynamic physical isolation between the full bottle area and the empty bottle area within a single cabinet, effectively avoiding the safety hazards of manual misidentification. It is particularly suitable for medical oxygen supply scenarios with high explosion-proof requirements and limited space.

[0024] Example 2 like Figures 1 to 3 As shown, in this embodiment, the placement platform 2 is mounted on the rotating shaft 4, and a retainer 15 is provided on the placement platform 2. The retainer 15 can engage and position the gas tank 12 to prevent the gas tank 12 from tipping over during rotation. The placement platform 2 and the retainer 15 can move and rotate axially relative to the rotating shaft 4. Specifically, the rotating shaft 4 is vertically fixed inside the cabinet 1, serving as the motion guide reference and load-bearing main shaft for the placement platform 2. The placement platform 2 is fitted onto the rotating shaft 4, and its degree of freedom of motion relative to the rotating shaft 4 is constrained to vertical movement along the axial direction and circumferential rotation around the axis. This design of combined degree of freedom of motion allows the placement platform 2 to convert the vertical gravitational potential energy generated by the weight change of the gas tank 12 into kinetic energy to drive its own rotation through a specific mechanical conversion structure, thereby realizing automatic switching of workstations. Compared with a simple linear sliding structure, the rotary layout can provide more placement positions 11 within the smaller cabinet 1 space.

[0025] Furthermore, to achieve the efficient conversion of gravity into torque, the placement platform 2 is provided with a threaded hole 5, and the rotating shaft 4 is provided with an external thread that matches the threaded hole 5. The helix angle of the threaded hole 5 is greater than the self-locking angle, allowing the placement platform 2 to rotate relative to the rotating shaft 4 under axial force. This is the key mechanical condition for achieving pure mechanical adaptive drive in this embodiment. In mechanical principles, when the helix angle of the screw pair is less than or equal to the friction angle, the mechanism is in a self-locking state, meaning that no matter how large the axial load is, it cannot drive the screw or nut to rotate relative to each other; while when the helix angle is greater than the self-locking angle (i.e., the friction angle), the self-locking condition is broken, and the component force generated by the axial load is sufficient to overcome the frictional resistance between the threaded contact surfaces, thereby converting it into an effective circumferential driving torque. In this application, by precisely designing the fitting parameters of the threaded hole 5 and the external thread of the rotating shaft 4, it is ensured that the helix angle is always greater than the self-locking angle corresponding to the material combination. For example, for the fit between a steel rotating shaft 4 and a copper or inlaid wear-resistant bushing threaded hole 5, the helix angle is preferably set in the range of 10° to 30°. This range ensures smooth rotation under the weight of a full gas cylinder 12, avoiding jamming due to excessive friction, and also prevents excessive descent speed or difficulty in reverse reset caused by an excessively large rise angle. When the operator removes the full gas cylinder 12 and replaces it with a lighter empty cylinder, the axial pressure on the placement platform 2 decreases, breaking the original force balance. Under the action of the elastic element 3, the placement platform 2 moves axially along the rotating shaft 4 while being forced to rotate circumferentially until it reaches a new equilibrium position, thereby accurately rotating the next full gas cylinder 12 to the retrieval window.

[0026] Furthermore, to optimize transmission smoothness and simplify the configuration of elastic elements, the elastic element 3 is a torsion spring, enabling it to provide both axial and circumferential elastic force. Traditional compression springs can only provide axial restoring force in one direction. If applied to a threaded transmission system, an additional circumferential drive mechanism or complex guiding device is often required to assist rotation in order to increase the rotational driving force. However, the torsion spring selected in this embodiment has unique mechanical properties: when it is installed between the cabinet 1 and the placement platform 2 and pre-tightened, it can not only provide an axial support component against gravity like an ordinary spring to balance part of the weight of the gas tank 12, but also simultaneously store and release torsional potential energy, providing a direct circumferential driving force or restoring torque. This dual elastic force output mechanism effectively compensates for the nonlinear resistance caused by fluctuations in the friction coefficient or machining errors during the threaded transmission process, ensuring smooth and vibration-free rotation of the placement platform 2 during the repositioning process. It should be understood that although a torsion spring is preferably used as the elastic element 3 in this embodiment, in other feasible embodiments, a combination of compression springs and coil springs, or a disc spring assembly, or other elastic elements that can achieve the same composite mechanical function can be used instead, as long as they can work in conjunction with the threaded pair to complete the automatic repositioning function under gravity sensing. Through the above-described rotary gravity-torque conversion mechanism, this embodiment successfully constructs an automated storage system that operates entirely based on physical and mechanical laws without any electric drive, completely eliminating electrical safety hazards in flammable and explosive gas storage environments, while significantly reducing the manufacturing cost and maintenance complexity of the equipment. Additionally, the placement platform 2 can be equipped with elastic retaining beads 14 at corresponding positions, so that when the placement platform 2 rotates to a placement position, it will be locked by the retaining beads 14, requiring a larger driving force to unlock and continue rotating, thus making the positioning more accurate. The disc-shaped placement platform 2 can be marked with certain identifiers, such as numerical codes, to prevent the inability to identify whether there is any remaining space after one rotation.

[0027] Example 3 like Figure 4As shown, in this embodiment, the placement platform 2 is mounted on the upwardly inclined sliding platform 6, and the placement platform 2 is directly or indirectly connected to the elastic element 3. This embodiment constitutes another technical solution parallel to the rotary drive architecture in the aforementioned embodiment 2, namely, a linear sliding gravity drive mechanism. Specifically, the sliding platform 6 is fixedly installed inside the cabinet 1, and its surface extends at a preset angle relative to the horizontal plane. The placement platform 2 is slidably mounted on the sliding platform 6 through guide components such as sliders, dovetail rails, or rollers, so that the movement trajectory of the placement platform 2 is limited to a linear reciprocating motion along the inclined direction. In this configuration, the vertical gravity generated by the weight change of the gas tank 12 is decomposed into two components: a normal pressure component perpendicular to the surface of the sliding platform 6 and a tangential component parallel to the surface of the sliding platform 6. When a full gas canister 12 is replaced with an empty one, the total mass of the placement platform 2 decreases, and the downward force parallel to the inclined plane decreases accordingly. At this time, the elastic potential energy stored in the elastic element 3 is released, pushing the placement platform 2 to slide upward along the inclined plane. Conversely, when a heavier gas canister 12 is placed, the increased downward force overcomes the resistance of the elastic element 3, driving the placement platform 2 to slide downward along the inclined plane. This linear drive method, which utilizes the principle of inclined plane force, has an intuitive structure, is easy to manufacture, and has relatively low friction loss. It is particularly suitable for installation scenarios where the internal space of the cabinet 1 is narrow and long or where it is inconvenient to set up a central pivot 4.

[0028] The selection of the tilt angle of the sliding platform 6 requires comprehensive consideration of both drive sensitivity and motion smoothness. An angle that is too small will result in insufficient tangential force of gravity to overcome static friction, causing the placement platform 2 to jam and fail to automatically reposition; an angle that is too large will result in excessive driving force, leading to excessively fast repositioning speed, impact noise, or even damage to the gas tank 12. Therefore, in practical design, it is preferable to set the tilt angle of the sliding platform 6 between 10° and 25°. This range ensures sufficient effective driving force under the mass difference of a single gas tank 12 while keeping the sliding acceleration within a safe threshold. Furthermore, to further optimize motion quality, a buffer block or damper can be installed at the lower end of the sliding platform 6 to absorb the remaining kinetic energy when the placement platform 2 reaches its limit position.

[0029] Regarding the connection method of the elastic element 3, this embodiment provides multiple implementation paths to adapt to different spatial layouts and mechanical requirements. As an example of a direct connection, the elastic element 3 can be a compression spring or a tension spring, with one end fixed to the high or low end of the sliding platform 6, and the other end directly abutting or hooking onto the placement platform 2, so that the direction of the elastic force is collinear with the sliding direction, thereby achieving the most efficient energy transfer. As another example of an indirect connection, when the internal space of the cabinet 1 is limited, preventing the elastic element 3 from being arranged along the sliding direction, the elastic element 3 can be connected to the placement platform 2 through transmission media such as ropes, wire ropes, connecting rods, or pulley blocks. For example, the elastic element 3 can be vertically installed on the side wall of the cabinet 1, and the placement platform 2 can be pulled along the inclined plane by a wire rope that passes around a fixed pulley. Regardless of the connection form used, as long as the elastic element 3 can provide a restoring force that counteracts the component of gravity in the sliding direction and participates in the energy balance adjustment of the system when the mass changes, it falls within the protection scope of this application.

[0030] It should be understood that although both this embodiment and Embodiment 2 achieve the function of adaptive repositioning based on gravity, there is a fundamental difference between them in terms of the mechanical transmission path. Embodiment 2 converts axial gravity into circumferential torque through a threaded joint, which is suitable for compact cylindrical storage; while this embodiment directly decomposes gravity into linear driving force through an inclined plane, which is suitable for flat or slender storage. This diversified implementation design not only enriches the technical solution system of this application, but also provides flexible technical support for product selection in different application scenarios, effectively expanding the coverage of patent protection.

[0031] Example 4 like Figure 5 and Figure 7 As shown, and in combination Figures 1 to 4In this embodiment, the relevant local structure, when replacing a full gas cylinder with an empty one, allows the placement platform 2 to rotate or slide a distance corresponding to one or more placement positions 11. Specifically, this displacement setting establishes the operational benchmark for "fixed-point retrieval and placement." In a preferred embodiment, the displacement triggered by each mass change is precisely configured to the distance of one placement position 11. This means that regardless of how many gas cylinders 12 are stored in the storage cabinet, or what the current circulation status is, the operator always faces the same fixed operating window position each time they open the cabinet door 8. This position is automatically replenished with the next full cylinder after a full cylinder is removed, or automatically removed after an empty cylinder is placed, freeing up the next empty cylinder receiving position. This standardized interaction mode eliminates the search and identification time caused by the random distribution of gas cylinder positions in traditional storage cabinets, especially in high-pressure scenarios such as medical emergencies, significantly reducing the cognitive load and error probability of operators. It should be understood that although the preferred displacement in this embodiment is the distance of one placement position 11, in certain special application scenarios, such as when multiple gas cylinders 12 need to be replaced in batches at once, the stiffness or transmission ratio of the elastic element 3 can be adjusted so that a single mass change triggers the displacement of two or more placement positions 11, as long as it can achieve a definite and predictable workstation switching function. Taking a 40-liter oxygen cylinder with a wall thickness of 5.7mm as an example, an empty oxygen cylinder weighs about 48 kg, and a full cylinder weighs about 56 kg. Replacing a full gas cylinder 12 with an empty one results in a mass change of 8 kg, that is, the mass of the placement platform 2 decreases by 8 kg. The elastic element 3 spring can then pull the placement platform 2 upwards to move it one placement position 11. Figure 5 As shown, the initial state is that all oxygen cylinders are full, and the placement platform 2 slides down to the bottom; as Figure 6 As shown, when an empty oxygen cylinder is placed and a full oxygen cylinder is removed, the placement platform 2 automatically moves up one placement position 11; as shown... Figure 7 As shown, when empty bottles are replaced one by one on the placement platform 2, the platform 2 gradually slides upwards until it reaches the top. Then, full gas canisters are delivered, and the bottles are replaced one by one. In this way, the replacement positions are all in the same position, which makes it less likely to make mistakes.

[0032] like Figure 1 and Figure 2As shown, to ensure the safety of the aforementioned automatic repositioning process, a locking device 7 is provided between the placement platform 2 and the cabinet 1, allowing the placement platform 2 to be locked relative to the cabinet 1 at a certain position or angle. Furthermore, the cabinet 1 is equipped with a cabinet door 8. The cabinet door 8 is linked to the locking device 7, so that the locking device 7 locks when the cabinet door 8 is open and opens when the cabinet door 8 is closed, allowing the placement platform 2 to rotate or slide relative to the cabinet 1. This linkage mechanism constitutes the core safety interlocking logic of this application. Specifically, when an operator opens the cabinet door 8 to prepare for retrieval operations, the locking device 7 immediately responds and forcibly locks the placement platform 2, keeping it absolutely stationary relative to the cabinet 1. This effectively prevents the placement platform 2 from accidentally rotating or sliding due to gravity imbalance or the residual force of the elastic element 3 at the moment a person's hand is inserted into the cabinet, thereby completely avoiding safety accidents such as pinching hands, impacting the gas cylinder 12, or damaging equipment. Conversely, the locking device 7 will only automatically release when the cabinet door 8 is completely closed and it is confirmed that personnel's hands and tools have been removed from the danger zone, allowing the placement platform 2 to adaptively reposition itself according to changes in the internal mass distribution. This "lock when the door is open, move when the door is closed" logic is entirely guaranteed by the mechanical structure, without the need for any electronic sensors or control programs. This fundamentally eliminates the risk of safety failures due to electrical faults. Electrical structures may generate electric sparks, which could further ignite flammable gases, posing a significant danger for some flammable gas cylinders.

[0033] Regarding the specific implementation of the locking device 7, the locking device 7 includes a ratchet disc 9 and a ratchet lever 10. The ratchet lever 10 is made of elastic material or uses a spring to achieve elastic reset. When the cabinet door 8 is open, the ratchet disc 9 and the ratchet lever 10 engage to lock the door. When the cabinet door 8 is closed, the unlocking lever 13, which is hinged to the cabinet door 8, pushes the ratchet lever 10 to rotate or move away from the ratchet disc 9 to unlock the door. The unlocking lever 13 can also be directly welded to the cabinet door 8 and rotate synchronously with the cabinet door 8. A ratchet lever 10 corresponding to and linked with the unlocking lever 13 is provided. Figure 2 and Figure 3As shown, the ratchet disc 9 can be coaxially fixed to the placement platform 2 or integrally formed with the placement platform 2, and its outer peripheral surface or end face is provided with one-way or two-way ratchet teeth; the ratchet bar 10 is pivotally or slidably mounted on the cabinet body 1, and maintains the tendency to engage with the ratchet disc 9 through a spring or other reset element. Driven by the linkage mechanism, the opening action of the cabinet door 8 will force the ratchet bar 10 to overcome the spring force and engage in the tooth groove of the ratchet disc 9 through a transmission medium such as a cam, connecting rod or cable, forming a rigid lock. Due to the inherent anti-reverse capability and high load-bearing characteristics of the ratchet mechanism, even if the placement platform 2 is fully loaded with heavy oxygen tanks, it can reliably withstand the huge torque or thrust generated by gravity without slipping. When the cabinet door 8 is closed, the linkage mechanism releases the pressure on the ratchet bar 10, causing it to retract and disengage from the ratchet disc 9 under the action of the spring force, restoring the freedom of movement of the placement platform 2. It should be understood that although this embodiment uses a ratchet mechanism as an example for explanation, this is not the only option. In other feasible implementations, the locking device 7 can also adopt a pin-type, friction plate-type, or electromagnetic attraction-type structure (limited to non-explosion-proof areas), as long as it can achieve locking and unlocking functions synchronized with the opening and closing state of the cabinet door 8. Furthermore, for... Figure 4 The elongated sliding platform 2 shown can be replaced with a ratchet disk 9 by a linear rack set along the sliding direction, and the ratchet bar 10 is adapted to a pawl with linear motion. Its working principle is exactly the same as that of the rotary type.

[0034] In terms of human-computer interaction layout, empty gas cylinders and full gas cylinders are positioned with a space between them, and cabinet door 8 is located in front of the full gas cylinder adjacent to the empty space and the corresponding position of the empty space. For example... Figure 5 and Figure 7 As shown, this empty space physically forms a clear buffer zone and visual boundary, clearly dividing the interior of the storage cabinet into a "full bottle area" and an "empty bottle area." More importantly, the opening of cabinet door 8 is carefully designed to face this empty space and the adjacent full gas cylinder. This layout, from a spatial design perspective, enforces a standardized operating procedure: when cabinet door 8 is opened, the operator first sees the empty space and naturally tends to place the empty gas cylinder in their hand into it first; as the empty bottle falls in, although the placement platform 2 does not move in the locked state, the increased weight has accumulated potential energy for subsequent movement; after the empty bottle is placed securely, the operator then conveniently removes the full gas cylinder located next to the empty space. Subsequently, cabinet door 8 is closed, the lock is released, and the weighted placement platform 2 automatically slides or rotates, moving the newly placed empty bottle into the deeper empty bottle storage area, while simultaneously precisely delivering the next full bottle to the previously retrieved position. This "empty bottle first, then full bottle" sequence not only conforms to ergonomics, but also, through the constraints of physical structure, minimizes the risk of accidentally taking an empty bottle or putting a full bottle back in the empty bottle area during an emergency, providing a final solid physical defense for medical oxygen supply safety.

[0035] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent changes, substitutions, or improvements made by those skilled in the art within the scope of the technology disclosed in this application, based on the aforementioned core technical concepts such as gravity adaptive drive, mechanical linkage locking, and partitioned management layout, such as adjustments to the type of elastic element, the form of transmission pair, the principle of the locking mechanism, or the spatial layout of the cabinet, should be included within the scope of protection of this application, as long as they do not depart from the spirit of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A gas cylinder storage cabinet, characterized in that, The device includes a cabinet (1), a placement platform (2), and an elastic element (3). The placement platform (2) has multiple placement positions (11) for placing multiple gas canisters (12). The placement platform (2) is installed on the cabinet (1) in a manner that allows it to rotate or slide relative to the cabinet (1). The elastic element (3) is located between the cabinet (1) and the placement platform (2), so that when the placement platform (2) bears different masses, it can rotate by an angle corresponding to one or more of the placement positions (11) or slide by a distance corresponding to one or more of the placement positions (11) by gravity.

2. The gas tank storage cabinet according to claim 1, characterized in that, The placement platform (2) is mounted on the rotating shaft (4), and the placement platform (2) can move and rotate axially relative to the rotating shaft (4).

3. The gas tank storage cabinet according to claim 2, characterized in that, The placement platform (2) is provided with a threaded hole (5), and the rotating shaft (4) is provided with an external thread that matches the threaded hole (5). The helix angle of the threaded hole (5) is greater than the self-locking angle, so that the placement platform (2) can rotate relative to the rotating shaft (4) under axial force.

4. The gas tank storage cabinet according to claim 3, characterized in that, The elastic element (3) is a torsion spring, which allows the elastic element (3) to provide axial and circumferential elastic force.

5. The gas tank storage cabinet according to claim 1, characterized in that, The placement platform (2) is installed on the inclined upward sliding platform (6), and the placement platform (2) is directly or indirectly connected to the elastic member (3).

6. The gas tank storage cabinet according to any one of claims 1-5, characterized in that, The change in mass when a full gas cylinder (12) is replaced with an empty gas cylinder (12) allows the placement platform (2) to rotate or slide a distance corresponding to the placement position (11).

7. The gas tank storage cabinet according to claim 6, characterized in that, A locking device (7) is provided between the placement platform (2) and the cabinet (1) so that the placement platform (2) can be locked relative to the cabinet (1) at a certain position or angle.

8. The gas tank storage cabinet according to claim 7, characterized in that, The cabinet (1) is provided with a cabinet door (8). The cabinet door (8) is linked with the locking device (7) so that the locking device (7) locks when the cabinet door (8) is opened and unlocks when the cabinet door (8) is closed, so that the placement platform (2) can rotate or slide relative to the cabinet (1).

9. The gas tank storage cabinet according to claim 8, characterized in that, The locking device (7) includes a ratchet disc (9) and a ratchet bar (10). When the cabinet door (8) is opened, the ratchet disc (9) and the ratchet bar (10) engage to lock the door. When the cabinet door (8) is closed, the ratchet bar (10) rotates or moves away from the ratchet disc (9) to unlock the door.

10. The gas tank storage cabinet according to claim 9, characterized in that, An empty space is provided between the empty gas cylinder (12) and the full gas cylinder (12), and the cabinet door (8) is located in front of the full gas cylinder (12) and the corresponding position of the empty space.

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