A care cart

Abstract

The application provides a nursing cart, which comprises a nursing cart; through a plurality of groups of connecting rod hinged linkage designs based on a first storage box, a second storage box and a third storage box that can be synchronously folded and unfolded are integrated, the disadvantages of the fixed and unadjustable storage layers of the traditional nursing cart are changed, each storage box body does not need to be moved alone during use, meanwhile, the overall volume of the cart can be greatly reduced after the plurality of layers of box bodies are folded, the space occupation during storage and movement is reduced, the limited working environment of the department is adapted, meanwhile, the top storage box is provided with a double-split type sealing cover, which can be opened and closed on one side alone, dust can be effectively prevented, the cleanliness of the internal articles is ensured, the pollution risk caused by the large-area opening of the box body is reduced, and the use is more in line with the operation requirements.

Description

Technical Field

[0001] This invention relates to the medical field, specifically to a nursing trolley. Background Technology

[0002] Nursing carts are an indispensable piece of basic equipment in departmental and clinical ward operations. They are mainly used for storing and transporting medical supplies such as instruments, sterile dressings, and nursing consumables. They can also assist in simple intraoperative cleaning and temporary placement of items. The rationality of their structure and the completeness of their functions directly affect the efficiency of nursing operations and the effectiveness of infection control in the department.

[0003] Currently, the structural design of existing nursing carts on the market is relatively simple, resulting in many shortcomings in actual clinical use. First, the storage structure of traditional nursing carts is mostly a fixed single or multi-layer cabinet with fixed spacing between each storage layer. This makes it impossible to flexibly adjust to different sizes of instruments and consumables. Furthermore, the storage cabinets cannot be opened and folded simultaneously, making it difficult to retrieve and place items. When not in use, they occupy a large amount of space, which is not conducive to the transportation and storage of the cart, thus lacking practicality. The operating table is mostly of a fixed size with limited surface area. In complex operations, the number of instruments, dressings, and temporary nursing supplies required during surgery is large, and the fixed table cannot meet the temporary placement needs. There is a lack of a flexible expandable operating platform. On the other hand, some carts with expandable tables have poor stability of the expansion structure, which is prone to shaking and displacement during operation, making them unsuitable for the operational needs of various scenarios. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide a nursing trolley that addresses the above-mentioned shortcomings of the prior art, and solves the problems of poor storage and adjustment flexibility and the inability to expand the operating table as needed.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a nursing trolley, comprising a nursing trolley, a first storage box being provided on the left side of the top of the nursing trolley, a storage component being provided on the top of the first storage box, a cleaning box being provided on the right side of the top of the nursing trolley, and an extension component being provided on the front side of the nursing trolley;

[0006] The storage assembly includes a second storage box, which is located on top of the first storage box, and a third storage box is located on top of the second storage box.

[0007] Preferably, the storage assembly further includes a first connecting rod, which is rotatably connected to the outside of the first storage box, and is rotatably connected to the second storage box. A second connecting rod is rotatably connected to the outside of the first storage box, and both the second and third storage boxes are rotatably connected to the second connecting rod. A third connecting rod is rotatably connected to the outside of the third storage box, and the third connecting rod is rotatably connected to the second storage box.

[0008] Through the above technical solution, a linkage hinge structure is formed by the first link, the second link, and the third link, which connects the first storage box, the second storage box, and the third storage box into one unit. This allows for the synchronous unfolding and folding adjustment of multiple storage boxes. Operators do not need to move each storage box individually. The adjustment operation is simple and convenient. The spacing and unfolding state of each storage layer can be flexibly adjusted according to the size of the items and the retrieval needs, improving the convenience of taking items out and putting them in. At the same time, the overall space occupied can be reduced after folding, making it convenient for the trolley to move and store.

[0009] Preferably, the expansion component includes a fixing groove, which is located on the front side of the nursing trolley. An expansion plate is slidably connected inside the fixing groove, and fixing bolts that contact the expansion plate are threaded onto both sides of the top of the nursing trolley.

[0010] The above technical solution allows for the sliding installation of an extension plate via a fixed slot on the front of the nursing trolley, secured by threaded bolts on both sides. This allows the extension plate to be pulled out to expand the operating table area when needed, providing an additional platform for temporarily placing instruments, dressings, and nursing supplies during surgery. When not in use, the extension plate can be stored inside the fixed slot, without occupying external space. The fixed bolts ensure the stability of the extension plate during use, preventing it from shaking or shifting during operations, thus adapting to the operating table requirements of different scenarios.

[0011] Preferably, a collection tank is fixedly installed inside the nursing trolley, and the collection tank is located at the bottom of the cleaning tank.

[0012] The above technical solution, by setting a collection tank at the bottom of the cleaning box and fixing it inside the nursing cart, can accurately collect the sewage and waste liquid generated during the cleaning operation, realize the centralized collection and storage of waste liquid, effectively avoid the problem of table pollution and slippery floor caused by random dripping and flowing of waste liquid during the nursing process, keep the department's operating environment clean and tidy, and facilitate the subsequent unified treatment of the waste liquid, which meets the department's clean operation and hospital infection control standards.

[0013] Preferably, the top of the third storage box is rotatably connected with a sealing cover, and the number of sealing covers is two.

[0014] By using the above technical solution, two rotatable sealing covers are installed on the top of the third storage box to seal and protect the top storage space. This effectively prevents dust, bacteria, and debris in the air from falling into the storage box, avoiding contamination of the stored precision instruments and sterile consumables, and ensuring the sterile and clean state of the supplies. At the same time, the double-lid split structure allows for the opening of one side of the sealing cover separately, without having to fully open the box, further reducing the entry of external pollutants and making opening and closing more flexible.

[0015] Preferably, the nursing trolley is provided with an operating handle on the left side, and the operating handle is located on the left side of the first storage box.

[0016] The above technical solution provides a stable force application point for medical staff to push, pull, and move the trolley by setting an operating handle on the left side of the nursing trolley corresponding to the first storage box. The handle is comfortable to hold and the force is evenly distributed, making it easy for medical staff to push the trolley to move and turn flexibly in departments, wards, and other scenarios. At the same time, the handle is positioned close to the storage area, so it does not obstruct equipment operation or the loading and unloading of items, and does not occupy working space, thus improving the overall ease of operation of the trolley.

[0017] Preferably, a blocking ring is provided on the outside of the collection tank, and the blocking ring is fixedly connected to the inside of the nursing trolley.

[0018] Preferably, a flexible cable is fixedly connected to the bottom of the sealing cap. The end of the flexible cable away from the sealing cap passes through the side wall of the third storage box and extends to the outside of the second storage box. The end of the flexible cable is fixedly connected to a clamp that fits the outer wall of the collection tank. The clamp is detachably fitted onto the outside of the collection tank, and the inner wall of the clamp is provided with a permanent magnet for magnetic attraction with the blocking ring. When the sealing cap is flipped upward to open, the flexible cable pulls the clamp upward and disengages from the blocking ring, so that the collection tank is released from its limit and can be taken out. When the sealing cap is closed, the clamp falls back under the action of gravity and is fitted onto the outside of the collection tank, and the permanent magnet is magnetically locked with the blocking ring.

[0019] Preferably, the collection tank includes an inner stainless steel liner and an outer fireproof and heat-insulating shell. An aerogel heat-insulating felt is filled between the inner stainless steel liner and the outer fireproof and heat-insulating shell. The outer side of the outer fireproof and heat-insulating shell is coated with an intumescent fire-retardant coating. A fireproof sealing end cap is detachably fitted to the top opening of the collection tank. A foldable heat-resistant handle is rotatably connected to the inner side of the fireproof sealing end cap. In the event of a fire emergency, the collection tank can be completely pulled out from inside the nursing cart and inverted to cover the person as a temporary fire shelter. The fireproof sealing end cap folds over and abuts against the ground to form a smoke isolation space.

[0020] Preferably, the bottom of the outer fireproof and heat-insulating shell is hinged with at least three outwardly extending support legs. The ends of the support legs are fixed with anti-slip insulating pads, and shape memory alloy springs are connected between the support legs and the outer wall of the collection tank. At room temperature, the shape memory alloy springs remain in a contracted state so that the support legs fit against the outer wall of the collection tank. When the ambient temperature exceeds a preset threshold, the shape memory alloy springs are heated and elongated, pushing the support legs outward to form a stable support gap between the inverted collection tank and the ground. The support gap is used for personnel to breathe and observe the external fire situation when taking refuge.

[0021] The above technical solution uses a blocking ring that is fitted and fixed inside the nursing trolley on the outside of the collection tank to limit and fix the collection tank. This effectively prevents the collection tank from shifting, shaking, or even falling off during the movement, turning, or bumping of the trolley, ensuring the stability of the waste liquid collection structure. At the same time, the blocking ring can protect the outside of the collection tank, preventing the tank from being damaged by bumps or collisions, extending the service life of the collection tank, and ensuring the continuous and stable operation of waste liquid collection.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. This invention integrates a second and third storage box that can be folded and unfolded synchronously, based on the original first storage box, through a multi-link hinged linkage design. This overcomes the drawback of the fixed and unadjustable storage layers of traditional nursing carts. During use, there is no need to move each storage box individually. The spacing and unfolding state of each storage layer can be flexibly adjusted according to the size of instruments and consumables and usage needs, greatly facilitating medical staff to retrieve and place items and improving the efficiency of intraoperative operations. At the same time, the folding of multiple boxes can significantly reduce the overall size of the cart, reducing the space occupied during storage and movement, and adapting to the limited working environment of the department. In addition, the top storage box is equipped with a double-split sealing cover, which can be opened and closed independently on one side, effectively preventing dust and ensuring the cleanliness of the internal supplies, while reducing the risk of contamination caused by a large open area of ​​the box, making it more in line with operational requirements.

[0024] 2. This invention improves the multi-functional operation performance of the trolley by incorporating a retractable operating platform and a closed waste liquid collection structure. A sliding, retractable extension panel is located at the front of the trolley. When the work surface is insufficient, it can be extended to provide temporary storage space for dressings, spare equipment, etc. When not in use, it can be completely retracted and hidden, not occupying external space. With fixing bolts, the extension panel ensures stable and wobbly operation, adapting to various operating scenarios. Simultaneously, a waste liquid collection tank with a limiting and protective structure is built into the bottom of the cleaning tank. This allows for the centralized collection of wastewater generated during cleaning, preventing waste liquid from dripping and causing pollution to the work surface and floor, as well as safety hazards. A retaining ring further limits and secures the collection tank, effectively preventing displacement, detachment, or damage to the tank during trolley movement and ensuring stable waste liquid collection.

[0025] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a three-dimensional exploded view of the structure of the present invention;

[0028] Figure 3 The structure of this invention Figure 1 Enlarged view of point A in the middle;

[0029] Figure 4 The structure of this invention Figure 2 Enlarged diagram of point B in the middle. Detailed Implementation

[0030] To make the technical means, creative features, objectives, and effects of this invention clearer and easier to understand, the invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0031] The present invention proposes a nursing trolley, including a nursing trolley 1, a first storage box 2 is provided on the left side of the top of the nursing trolley 1, a storage component 3 is provided on the top of the first storage box 2, a cleaning box 4 is provided on the right side of the top of the nursing trolley 1, and an extension component 5 is provided on the front side of the nursing trolley 1.

[0032] The storage component 3 includes a second storage box 31, which is located on top of the first storage box 2, and a third storage box 32 is located on top of the second storage box 31.

[0033] Please see Figures 1-4 The storage component 3 also includes a first connecting rod 33, which is rotatably connected to the outside of the first storage box 2 and rotatably connected to the second storage box 31. A second connecting rod 34 is rotatably connected to the outside of the first storage box 2. The second storage box 31 and the third storage box 32 are both rotatably connected to the second connecting rod 34. A third connecting rod 35 is rotatably connected to the outside of the third storage box 32 and rotatably connected to the second storage box 31.

[0034] Furthermore, a linkage hinge structure is formed by the first link 33, the second link 34, and the third link 35, which movably connects the first storage box 2, the second storage box 31, and the third storage box 32 into one unit. This allows for the synchronous unfolding and folding adjustment of multiple storage boxes. Operators do not need to move each storage box individually, and the adjustment operation is simple and convenient. The spacing and unfolding state of each storage layer can be flexibly adjusted according to the size of the items and the retrieval needs, improving the convenience of taking items out and putting them in. At the same time, the overall space occupied can be reduced after folding, making it convenient for the trolley to move and store.

[0035] Please see Figures 1-4 The expansion component 5 includes a fixing groove 51, which is located on the front side of the nursing trolley 1. An expansion plate 52 is slidably connected inside the fixing groove 51. Fixing bolts 53 that contact the expansion plate 52 are threadedly connected to both sides of the top of the nursing trolley 1.

[0036] Furthermore, the extension plate 52 is slidably installed in the fixing slot 51 on the front side of the nursing cart 1, and locked in place with the fixing bolts 53 connected by threads on both sides. When nursing work is needed, the extension plate 52 can be pulled out to expand the operating table area, providing an additional operating platform for temporary placement of instruments, dressings and nursing supplies during the operation. When not in use, the extension plate 52 can be stored inside the fixing slot 51 without occupying external space. The fixing bolts 53 can ensure the stability of the extension plate 52 during use and prevent the extension plate 52 from shaking or shifting during the operation, adapting to the operating table requirements of different scenarios.

[0037] Please see Figures 1-4 The nursing trolley 1 has a collection tank 6 fixedly installed inside, and the collection tank 6 is located at the bottom of the cleaning box 4.

[0038] Furthermore, by setting a collection tank 6 at the bottom of the cleaning tank 4 and fixing it inside the nursing cart 1, the wastewater and waste liquid generated during the operation of the cleaning tank 4 can be accurately collected, realizing the centralized collection and storage of waste liquid. This effectively avoids the problem of table pollution and slippery floor caused by the random dripping and flowing of waste liquid during the nursing process, keeping the department's operating environment clean and tidy. At the same time, the centrally collected waste liquid is convenient for subsequent unified treatment, which meets the department's clean operation and hospital infection control standards.

[0039] Please see Figures 1-4 The top of the third storage box 32 is rotatably connected with a sealing cover 7, and there are two sealing covers 7.

[0040] Furthermore, by setting two rotatable sealing covers 7 on the top of the third storage box 32, the top storage space can be sealed and protected, effectively preventing dust, bacteria, and debris in the department air from falling into the storage box, avoiding contamination of the stored precision instruments and sterile consumables, and ensuring the sterile and clean state of the supplies. At the same time, the double-lid split structure allows for the opening of one side of the sealing cover 7 separately, without having to completely open the box, further reducing the entry of external pollutants and making opening and closing more flexible.

[0041] Please see Figures 1-4 The nursing trolley 1 has an operating handle 8 on its left side, which is located on the left side of the first storage box 2.

[0042] Furthermore, by setting an operating handle 8 on the left side of the nursing cart 1 corresponding to the first storage box 2, a stable force application point is provided for medical staff to push, pull, and move the cart. The handle is comfortable to hold and the force is evenly distributed, making it easy for medical staff to push the cart to move and turn flexibly in departments, wards, and other scenarios. At the same time, the handle is positioned close to the storage area, so it does not obstruct equipment operation or the loading and unloading of items, and does not occupy working space, thus improving the overall ease of operation of the cart.

[0043] Please see Figures 1-4A blocking ring 9 is provided on the outside of the collection tank 6, and the blocking ring 9 is fixedly connected to the inside of the nursing trolley 1.

[0044] Furthermore, by fitting a retaining ring 9 on the outside of the collection tank 6 and fixing it inside the nursing trolley 1, the collection tank 6 can be limited and fixed, effectively preventing the collection tank 6 from shifting, shaking, or even falling off during the movement, turning, or bumping of the trolley, thus ensuring the stability of the waste liquid collection structure. At the same time, the retaining ring 9 can protect the outside of the collection tank 6, preventing the tank from being damaged by bumps or collisions, extending the service life of the collection tank 6, and ensuring the continuous and stable operation of waste liquid collection.

[0045] The specific implementation process of this invention is as follows: When the nursing cart is in operation, the overall structure of the nursing cart 1 with the operating handle 8 on the left side enables flexible movement of the equipment. Medical staff can smoothly apply force through the operating handle 8, which is set in close to the storage area, to easily push and turn the cart. The handle does not occupy the working space or obstruct the operation of the equipment and the loading and unloading of items, ensuring convenient operation. The first storage box 2 on the top left of the nursing cart 1 forms a linkage hinge structure through the first connecting rod 33, the second connecting rod 34, and the third connecting rod 35, which are hinged on the outside. Together with the stacked second storage box 31 and the third storage box 32, they form a multi-layer storage unit that can be opened and folded simultaneously. Without moving each box individually, the spacing and unfolding state of each storage layer can be flexibly adjusted according to the size of the items and the needs of retrieval, making it convenient for medical staff to pick up and put in various supplies. When folded, it can also reduce the overall space occupied, making it convenient for the cart to be stored and transported. At the same time, the two split-type rotatable sealing covers 7 set on the top of the third storage box 32 can be opened on one side or completely closed as needed, effectively blocking dust and debris in the department and ensuring safety. The cleanliness of the precision instruments and consumables inside the box is ensured, while the cleaning box 4 on the top right of the nursing cart 1 meets the needs of intraoperative cleaning operations. Wastewater and waste fluid generated during the operation can fall directly into the collection tank 6 fixed inside the nursing cart 1 at the bottom, achieving centralized collection of waste fluid and avoiding the problems of waste fluid dripping and flowing randomly, causing environmental mess and slippery ground. At the same time, the outer side of the collection tank 6 is equipped with a blocking ring 9 fixed inside the nursing cart 1, which can limit the tank and prevent the tank from shifting, shaking, falling off or being damaged by impact when the cart moves, bumps, or turns. To ensure the stable operation of the waste liquid collection structure, the extension plate 52, which is slidably mounted on the front side of the nursing cart 1 through the fixing groove 51, can be pulled out to expand the operating table area when needed, providing additional operating space for temporary storage of surgical instruments, dressings, and nursing supplies. The extension plate 52 can be locked and fixed by the fixing bolts 53 on both sides of the nursing cart 1 to prevent shaking or displacement during use. When not in use, the extension plate 52 can be retracted into the fixing groove 51 without occupying external space, fully adapting to the table operation needs of different scenarios.

[0046] A flexible cable is installed at the bottom of the sealing cap 7, and the end of the flexible cable extends through the side wall of the third storage box 32 to the outside of the second storage box 31 and connects to the clamp. The inner wall of the clamp is equipped with a permanent magnet that magnetically engages with the blocking ring 9, realizing the linkage between the opening and closing of the sealing cap 7 and the limiting and unlocking of the collection tank 6. When medical staff flip the sealing cap 7 upwards to open it, the flexible cable simultaneously pulls the clamp upwards and disengages from the blocking ring 9, releasing the collection tank 6 from its limiting state. This allows medical staff to directly pull out the collection tank 6 for waste liquid dumping and cleaning maintenance after cleaning operations, without the need for additional manual operation of the unlocking structure, simplifying the operation process. When the sealing cap 7 is closed, the clamp automatically falls back under the action of gravity and re-fits onto the outside of the collection tank 6. The permanent magnet and the blocking ring 9 magnetically lock together, ensuring that the collection tank 6 is reliably limited during the movement of the trolley, effectively preventing the tank from shaking, shifting, or falling off. This integrated design cleverly combines the sealing and protection function of the storage box with the locking function of the waste liquid collection tank, ensuring the stability of the collection tank 6 during daily use and greatly facilitating the waste liquid dumping and maintenance operations. It avoids the safety hazards caused by medical staff forgetting to lock the collection tank 6, and significantly improves the ease of use and structural reliability of the nursing cart.

[0047] By employing a double-layer structure design—an inner stainless steel liner and an outer fireproof and heat-insulating shell—with aerogel insulation felt filling the space between the two layers, and an intumescent fire-retardant coating applied to the outer shell, the collection tank 6 achieves excellent fireproof and heat-insulating performance in addition to its conventional waste liquid collection function. In the event of a sudden fire emergency in a department or ward, medical staff can quickly pull the collection tank 6 out of the nursing cart 1, invert it, and place it over themselves. Combined with the removable fireproof sealing cap on top, it flips over to contact the ground, forming a relatively enclosed temporary fire shelter and smoke isolation space, buying valuable emergency evacuation time for personnel on site. The foldable, heat-resistant handle design allows personnel to quickly grasp and move the collection tank 6 in emergencies, preventing burns. This solution transforms the collection tank 6, which was originally only used as a waste liquid container, into an emergency safety protection function. Without increasing the extra volume and cost of the trolley, it significantly improves the safety of the nursing trolley in the event of a sudden fire, filling the gap in the lack of emergency protection function in existing nursing trolleys. It is especially suitable for places with high population density and high fire safety requirements, such as hospital departments and wards.

[0048] By hinged at least three outwardly extending support legs to the bottom of the outer fireproof and heat-insulating shell of the collection tank 6, and connecting shape memory alloy springs between the support legs and the outer wall of the collection tank 6, the collection tank 6 can automatically switch from a retracted state to a stable support state in case of a fire emergency. At room temperature, the shape memory alloy springs remain in a contracted state, allowing the support legs to fit snugly against the outer wall of the collection tank 6 for storage, without affecting the normal installation and retrieval of the collection tank 6 inside the nursing cart 1. When the ambient temperature exceeds a preset threshold, i.e., a fire occurs, the shape memory alloy springs are heated and extend, pushing the support legs to automatically extend outward, forming a stable support gap between the inverted, capped collection tank 6 and the ground. This gap allows personnel to breathe outside air and facilitates observation of the external fire situation, preventing suffocation or inability to judge escape opportunities due to the collection tank 6 being completely pressed against the ground. The anti-slip insulating pads ensure that the support legs can stably grip the ground under various ground conditions, preventing the tank from sliding and causing secondary injuries. This design utilizes the temperature-sensitive properties of shape memory alloy materials to achieve fully automatic triggering and deployment of the fire shelter support structure, eliminating the need for manual operation. It fully considers the panic and operational limitations of personnel in emergency fire situations, further enhancing the practicality and safety of the collection tank 6 as an emergency fire shelter, and providing more comprehensive life safety protection for medical staff and patients.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A nursing trolley, characterized in that: The nursing cart (1) includes a first storage box (2) on the left side of the top of the nursing cart (1), a storage component (3) on the top of the first storage box (2), a cleaning box (4) on the right side of the top of the nursing cart (1), and an extension component (5) on the front side of the nursing cart (1). The storage component (3) includes a second storage box (31), which is located on top of the first storage box (2), and a third storage box (32) is located on top of the second storage box (31).

2. The nursing trolley according to claim 1, characterized in that: The storage assembly (3) further includes a first connecting rod (33), which is rotatably connected to the outside of the first storage box (2). The first connecting rod (33) is rotatably connected to the second storage box (31). The outside of the first storage box (2) is rotatably connected to a second connecting rod (34). The second storage box (31) and the third storage box (32) are both rotatably connected to the second connecting rod (34). The outside of the third storage box (32) is rotatably connected to a third connecting rod (35), which is rotatably connected to the second storage box (31).

3. The nursing trolley according to claim 1, characterized in that: The expansion component (5) includes a fixing groove (51), which is located on the front side of the nursing trolley (1). An expansion plate (52) is slidably connected inside the fixing groove (51). Fixing bolts (53) that contact the expansion plate (52) are threadedly connected to both sides of the top of the nursing trolley (1).

4. A nursing trolley according to claim 1, characterized in that: The nursing trolley (1) has a collection tank (6) fixedly installed inside, and the collection tank (6) is located at the bottom of the cleaning box (4).

5. A nursing trolley according to claim 1, characterized in that: The top of the third storage box (32) is rotatably connected with a sealing cover (7), and there are two sealing covers (7).

6. A nursing trolley according to claim 1, characterized in that: The nursing trolley (1) is provided with an operating handle (8) on the left side, and the operating handle (8) is located on the left side of the first storage box (2).

7. A nursing trolley according to claim 4, characterized in that: A blocking ring (9) is provided on the outside of the collection tank (6), and the blocking ring (9) is fixedly connected to the inside of the nursing cart (1).

8. A nursing trolley according to claim 1, characterized in that: A flexible cable is fixedly connected to the bottom of the sealing cover (7). The end of the flexible cable away from the sealing cover (7) passes through the side wall of the third storage box (32) and extends to the outside of the second storage box (31). The end of the flexible cable is fixedly connected to a clamp that is adapted to the outer wall of the collection tank (6). The clamp is detachably fitted on the outside of the collection tank (6), and the inner wall of the clamp is provided with a permanent magnet for magnetic attraction with the blocking ring (9). When the sealing cover (7) is flipped up and opened, the flexible cable pulls the clamp to move upward and disengage from the blocking ring (9), so that the collection tank (6) is released from the limit and can be taken out. When the sealing cover (7) is closed, the clamp falls back under the action of gravity and is fitted on the outside of the collection tank (6). The permanent magnet is magnetically locked with the blocking ring (9).

9. A nursing trolley according to claim 4, characterized in that: The collection tank (6) includes an inner stainless steel liner and an outer fireproof and heat-insulating shell. Aerogel heat-insulating felt is filled between the inner stainless steel liner and the outer fireproof and heat-insulating shell. The outer side of the outer fireproof and heat-insulating shell is coated with an intumescent fireproof coating. A fireproof sealing end cap is detachably closed at the top opening of the collection tank (6). A foldable heat-resistant handle is rotatably connected to the inner side of the fireproof sealing end cap. In case of fire emergency, the collection tank (6) can be completely pulled out from the nursing cart (1) and inverted and covered above the human body as a temporary fire shelter. The fireproof sealing end cap is folded over and abuts against the ground to form a smoke isolation space.

10. A nursing trolley according to claim 9, characterized in that: The bottom of the outer fireproof and heat-insulating shell is hinged with at least three outwardly extending support legs. The ends of the support legs are fixed with anti-slip insulating pads. A memory alloy spring is connected between the support legs and the outer wall of the collection tank (6). At room temperature, the memory alloy spring remains in a contracted state so that the support legs fit against the outer wall of the collection tank (6) and are stored there. When the ambient temperature exceeds a preset threshold, the memory alloy spring is heated and elongated and pushes the support legs outward to form a stable support gap between the inverted collection tank (6) and the ground. The support gap is used for personnel to breathe and observe the external fire situation when taking refuge.

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