Movable climbing stool suitable for SPF animal house

Abstract

The utility model discloses a mobile climb stool suitable for SPF animal house, including first footboard, second footboard, adjustable support subassembly and pulley spring guide system, second footboard is located right above first footboard, adjustable support subassembly is located between first footboard and second footboard, and pulley spring guide system is located right above first footboard. The pulley spring guide system is located in a cavity defined by the first pedal. Under the condition of not depending on manual operation, the fixed state and the moving state of the climbing stool are automatically switched, and meanwhile, the climbing height is adjustable so as to meet the requirements of operation at different heights.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment technology, and more specifically, to a mobile climbing stool suitable for SPF animal rooms. Background Technology

[0002] SPF stands for Specific Pathogen Free animal room, which is an animal room free of specific pathogens.

[0003] In animal rooms and laboratory animal facilities, due to the multiple cages on the racks, animal keepers and veterinarians often need to climb to work at heights when observing, retrieving, and cleaning animals, especially the top cages, which present difficulties for workers.

[0004] Currently, portable footstools, small ladders, or simple climbing platforms are commonly used for working at heights in animal facilities, clean areas of laboratories, and medical facilities. Existing climbing equipment can be broadly categorized into the following two types:

[0005] Fixed footstool: It has a simple structure and is usually supported by four legs, but it is inconvenient to move and requires manual handling, resulting in low efficiency when working frequently.

[0006] Portable footstool with casters: Casters are installed at the bottom of the stool legs. The casters can be manually locked or unlocked to switch between fixed and mobile modes. However, the operation is cumbersome. During frequent work at height, it is necessary to go down to the ground to lock the casters, which affects work efficiency and poses safety hazards.

[0007] Furthermore, existing equipment typically lacks height adjustment functionality, preventing users from flexibly adjusting the equipment height to meet different operational needs. Because fixed-height equipment cannot adapt to various work scenarios, especially when height adjustment is required, traditional equipment cannot meet diverse needs, necessitating operators to use multiple devices to accommodate different work environments. This not only increases the number of operational steps but also wastes a significant amount of time and effort.

[0008] CN216984240U discloses a step stool, which is assembled from several step stool units by connecting parts. Each step stool unit has several fixing holes on one side and several hanging holes on the other side. One end of the connecting part is detachably connected to the fixing hole of one step stool unit, and the other end is snapped to the hanging hole of another step stool unit. The step stool can be stacked in the vertical and horizontal directions according to the usage requirements, thereby adjusting the user's standing height and standing area. However, during operation, the step stool needs to be moved. The step stool needs to be moved manually by the user. If the step stool is moved, the high-frequency bending can easily damage the user's spinal function. If the step stool is kicked away, it can easily damage the ground, and the loud noise can increase the fear of experimental animals.

[0009] CN222467128U discloses an operating room step stool, including a stool body, a slide rail, a slider, a suction cup frame, suction cup bodies, and a foot lever. The stool body includes a footboard, two legs, and a crossbeam. The slider is slidably connected to the slide rail, and the suction cup frame is fixedly installed on the slider. The suction cup frame includes a vertical plate and a horizontal plate, with several suction cup bodies installed on the lower surface of the horizontal plate. The foot lever includes an integrally connected rod and a foot pedal. The rod is S-shaped, with one end rotatably connected to the vertical plate, and the foot pedal is fixedly located at the end of the rod away from the vertical plate. This operating room step stool achieves the horizontal fixation and unlocking of the stool body from the ground by setting a suction cup frame with suction cup bodies and a foot lever for lifting the suction cup bodies off the ground, making it convenient to temporarily change the position of the step stool by foot during operation. However, the step stool has a single height and a low elevation, making it only suitable for low-level operations and unable to meet the needs of higher-level operations. In addition, the structure of this device is relatively complex, making it difficult to clean and disinfect, and it is not suitable for workplaces with high cleanliness requirements.

[0010] Therefore, there is an urgent need for mobile step stools that are automatically stabilized and have adjustable height, suitable for SPF animal housing. Utility Model Content

[0011] To address the aforementioned problems, this invention provides a portable climbing stool suitable for SPF animal housing, which aims to improve at least one of the problems mentioned in the background art.

[0012] A portable climbing stool suitable for SPF animal housing includes a first pedal, a second pedal, an adjustable support assembly, and a pulley spring guide system. The second pedal is located directly above the first pedal, the adjustable support assembly is located between the first and second pedals, and the pulley spring guide system is located within the cavity enclosed by the first pedal.

[0013] By introducing a height-adjustable support structure, the height can be adjusted to flexibly meet the needs of different working heights in the animal room.

[0014] Optionally, the second pedal is a circular pedal, and the first pedal has a cylindrical structure.

[0015] Optionally, the edge of the second pedal curves outward at a certain angle to form an outward-curving structure, which forms a protective ring.

[0016] Optionally, the edge of the second pedal is provided with a hook.

[0017] Optionally, the adjustable support assembly includes an inner support sleeve, an outer support sleeve, and a limiting mechanism. The lower end of the inner support sleeve is connected to the first pedal, and the upper end of the outer support sleeve is connected to the second pedal. The inner support sleeve is located inside the outer support sleeve. The inner and outer support sleeves are sequentially provided with positioning holes along the height direction, and the limiting mechanism passes through the positioning holes of the inner and outer support sleeves respectively.

[0018] Optionally, the adjustable support assembly further includes three support rods, one end of each support rod is connected to the second pedal, and the other end is connected to the outer support sleeve. The connection points of the three support rods to the second pedal are evenly distributed in a circle with the outer support sleeve as the center.

[0019] Optionally, the first pedal is a bottomless cylindrical structure. The pulley spring guide system includes a central screw, a pulley, a pulley support tray, and a telescopic device. The telescopic device is sleeved on the outside of the central screw. The upper end of the central screw is connected to the first pedal, and the lower end is connected to the pulley support tray. The pulley is connected below the pulley support tray.

[0020] By introducing a pulley spring guiding system, the equipment can be easily moved when unloaded and automatically fixed when loaded, greatly improving the ease of operation and work safety.

[0021] Optionally, a limit nut is installed at the lower end of the central screw.

[0022] Optionally, the upper surfaces of the first pedal and the second pedal are uniformly provided with anti-slip protrusions.

[0023] Optionally, an anti-slip silicone ring is provided on the outer edge of the bottom of the first pedal.

[0024] Optionally, the mobile climbing stools suitable for SPF animal rooms are all made of materials resistant to high-pressure sterilization.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] (1) Convenient movement and automatic stabilization performance:

[0027] The pulley spring guiding system design enables the climbing stool to automatically extend its pulleys when unloaded, facilitating pushing and positioning; when loaded, the pulleys automatically retract, and the anti-slip silicone rings contact the ground to provide stable support, preventing equipment slippage and improving operational safety and ease of use. This design reduces the tedious steps of repeatedly locking the pulleys manually, significantly improving operational efficiency.

[0028] (2) The climbing height is adjustable:

[0029] The inner and outer sleeve structure, combined with the locking mechanism of the slot and spring pin, enables multiple height adjustments within the range of 20cm to 40cm, meeting different height requirements, greatly enhancing the equipment's versatility, and improving user comfort and flexibility.

[0030] (3) Adaptability to clean environments:

[0031] This invention uses high-pressure sterilization resistant materials throughout, and all structural connections are welded without dead angles. Combined with the center opening design of the upper and lower pedals, it ensures that the sterilization process is uniform and thorough, significantly improving cleaning efficiency. It meets the stringent standards for equipment cleaning and hygiene in SPF animal rooms and high-cleanliness laboratories. Compared with existing ordinary metal or plastic pedals, it provides more thorough cleaning and sterilization and has a longer service life.

[0032] (4) Improved safety for workers:

[0033] The invention features anti-slip protrusions on the surfaces of both pedals to increase foot friction; the upper pedal has an outward-curving edge to form a protective boundary and prevent the operator's foot from slipping off; the overall circular structure design ensures even weight distribution, eliminates sharp angles, and improves stability under eccentric forces; the lower pedal has a high-temperature resistant silicone anti-slip ring at its bottom edge, which provides additional friction even if the load is insufficient to fully retract the pulley, reducing operational risks.

[0034] (5) Sturdy and durable structure, suitable for high-frequency operation:

[0035] The pulley spring guide system is reasonably designed to ensure reliability and durability under long-term high-frequency use and reduce maintenance costs; the hidden hook structure can be flipped out 90° for easy hanging of tools such as spray bottles, reducing the process of repeatedly picking up items and improving work smoothness.

[0036] Therefore, this invention can automatically switch between fixed and movable states of the climbing stool without relying on manual operation; at the same time, the climbing height is adjustable to meet the needs of different working heights, and the stainless steel material is easy to clean and sterilize. It can meet the requirements of high-cleanliness environment high-pressure sterilization and no cleaning dead corners, while improving work efficiency, reducing manual operation steps, and enhancing operation safety and convenience. This overcomes the problems of existing climbing equipment, such as difficulty in moving, need for manual switching of pulley locks, unstable fixing, limited climbing height, unsuitable material for high-pressure sterilization, and cleaning dead corners. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the climbing stool structure in its unloaded state;

[0039] Figure 2 This is a schematic diagram of the climbing stool under load.

[0040] Figure 3 An exploded view of the pulley spring guide system;

[0041] Figure 4 This is a schematic diagram of the pulley spring system in its unloaded state.

[0042] Figure 5 This is a schematic diagram of the load state of the pulley spring system.

[0043] Explanation of reference numerals in the attached drawings: 101, First pedal; 102, Second pedal; 103, Anti-slip protrusion; 104, Outward-curving structure; 105, Hook; 106, Anti-slip silicone ring; 2, Pulley spring guide system; 201, Central screw; 202, Fixing nut; 203, Telescopic device; 204, Pulley support tray; 205, Limiting nut; 206, Pulley; 301, Outer support sleeve; 302, Inner support sleeve; 303, Support rod; 304, Limiting mechanism; 305, Positioning hole. Detailed Implementation

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, "a plurality of" means two or more, unless otherwise precisely specified.

[0046] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of 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 embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0049] Please refer to Figures 1-5 , Figure 1 This is a schematic diagram of the climbing stool structure when unloaded. Figure 2 This is a schematic diagram of the climbing stool under load. Figure 3 This is an exploded view of the pulley spring guide system. Figure 4 This is a schematic diagram of the pulley spring system in its unloaded state. Figure 5 This is a schematic diagram of the load state of the pulley spring system.

[0050] A portable step stool suitable for SPF animal housing includes a first step 101, a second step 102, and an adjustable support assembly. The second step 102 is located directly above the first step 101, and the adjustable support assembly is connected to the first step 101 and the second step 102 respectively.

[0051] The second pedal 102 is a circular pedal, and the first pedal 101 has a cylindrical structure. The adjustable support assembly includes an inner support sleeve 302, an outer support sleeve 301, and a limiting assembly, wherein the limiting assembly includes a limiting mechanism 304 and positioning holes 305. The lower end of the inner support sleeve 302 is connected to the first pedal 101, and the upper end of the outer support sleeve 301 is connected to the second pedal 102. The inner support sleeve 302 is located inside the outer support sleeve 301. Positioning holes 305 are sequentially formed in the inner support sleeve 302 and the outer support sleeve 301 along the height direction. The limiting mechanism 304 passes through the positioning holes 305 of the inner support sleeve 302 and the outer support sleeve 301, respectively. Preferably, the outer support sleeve 301 has one positioning hole 305, and the inner support sleeve 302 has at least two positioning holes 305.

[0052] With the first pedal 101, the second pedal 102, and the adjustable support assembly, the adjustable support assembly locks its height with the limiting mechanism 304 through the positioning hole 305. To adjust the height, the limiting mechanism 304 is removed, allowing the second pedal 102 to be raised or lowered. After selecting the desired height, the limiting mechanism is reinserted to lock it, achieving a height adjustment from 20cm to 40cm. This is suitable for different heights and working levels, improving the equipment's adaptability and user comfort. The first pedal 101 and the second pedal 102 have a circular shape along the horizontal direction, eliminating sharp angles and ensuring a balanced center of gravity, maintaining stability even when standing off-center.

[0053] In some embodiments, the lower end of the inner support sleeve 302 is fixedly connected to the first pedal 101, and the upper end of the outer support sleeve 301 is also fixedly connected to the second pedal 102.

[0054] In some embodiments, the cylindrical structure of the first pedal 101 includes, but is not limited to, a cylindrical structure, a frustum structure, and a pyramidal structure; preferably, it is a cylindrical structure and a frustum structure; more preferably, it is a frustum structure that is narrower at the top and wider at the bottom.

[0055] In one or more specific embodiments of this utility model, in order to improve safety, the edge of the second pedal 102 is raised outward to form an outward-curving structure 104 at a certain angle. The outward-curving structure 104 forms a protective ring to further improve the safety of personnel during operation.

[0056] In one or more specific embodiments of this utility model, a hook 105 is provided on the edge of the second pedal 102, preferably a concealed hook. In other words, the hook 105 is hidden when not in use and can be flipped out at 90° when in use, for hanging utensils such as spray bottles. Those skilled in the art should know that the installation method of hiding the hook 105 when not in use and flipping it out at 90° when in use is prior art, and those skilled in the art can set it as needed; the design of the hook 105 reduces the repeated squatting or bending over to pick up objects, further optimizing the operation process and reducing the risk of fatigue.

[0057] In one or more specific embodiments of this utility model, the limiting mechanism 304 can be connected and fixed by means of a pin insertion or by means of a bolt and nut. Those skilled in the art can make limitations as needed, and no special limitations are made here.

[0058] In one or more specific embodiments of this utility model, to enhance structural strength and stability, the adjustable support assembly further includes support rods located between the second pedal 102 and the outer support sleeve 301. Preferably, there are three or more support rods, each support rod 303 having one end connected to the second pedal 102 and the other end connected to the outer support sleeve 301. The connection points of the multiple support rods 303 to the second pedal 102 are evenly distributed circumferentially with the outer support sleeve 301 as the center.

[0059] In one or more specific embodiments of this utility model, the mobile climbing stool suitable for SPF animal rooms also includes a pulley spring guide system 2. The first pedal 101 is a bottomless frustum-shaped structure, and the pulley spring guide system 2 is located within the cavity enclosed by the first pedal 101. When unloaded, it... Figure 1 As shown, the pulley in the pulley spring guide system 2 extends downwards beyond the cavity of the first pedal 101. The pulley spring guide system 2 is as follows... Figure 3 The device includes a central screw 201, pulleys 206, a pulley support tray 204, and a telescopic device 203. The telescopic device 203 is fitted around the outer side of the central screw 201, with its upper end connected to the center of the bottom of the first pedal 101 and its lower end connected to the pulley support tray 204. At least three pulleys 206 are connected to the bottom of the pulley support tray 204. To extend the service life of the first pedal 101, its thickness should be sufficient to support the load forces of the adjustable support assembly and the pulley spring guide system 2.

[0060] In some embodiments, a guide hole is provided at the center of the pulley support tray 204, and the lower end of the central screw 201 passes through the guide hole and is movably connected to the pulley support tray 204.

[0061] In one or more specific embodiments of this utility model, the retractable device 203 is a spring.

[0062] In some embodiments, the number of pulleys is three or more, and the pulleys are evenly distributed on the outside of the central screw. Preferably, the number of pulleys is three to four, and more preferably three.

[0063] In one or more specific embodiments of this utility model, in order to prevent the pulley support tray 204 and the pulley 206 from falling off the central screw 201 and to limit the downward movement distance of the pulley support tray 204, a limiting nut 205 is installed at the lower end of the central screw 201, and the limiting nut 205 is located below the pulley support tray 204.

[0064] In one or more specific embodiments of this utility model, in order to enhance the friction of the user's feet, anti-slip protrusions 103 are uniformly provided on the upper surfaces of the first pedal 101 and the second pedal 102.

[0065] In one or more specific embodiments of this utility model, in order to enhance anti-slip performance and stability, an anti-slip silicone ring 106 is provided on the outer edge of the bottom of the first pedal 101. Under load, the anti-slip silicone ring 106 contacts the ground, thereby enhancing the anti-slip performance and stability under load. Moreover, even when the load is insufficient to compress the pulley 206, it can still provide friction, improving the adhesion of the entire stool when it is stationary.

[0066] In one or more specific embodiments of this utility model, the mobile climbing stools applicable to SPF animal rooms are all made of high-pressure sterilization resistant materials to meet the requirements of high-cleanliness environment high-pressure sterilization and no cleaning dead corners; stainless steel is preferred as the high-pressure sterilization resistant material.

[0067] The pulley spring guide system 2 enables the pulley 206 to automatically extend for easy pushing (it can even be moved with a kick) when unloaded, while automatically retracting when under load, and the bottom anti-slip silicone ring 106 forms a stable support in contact with the ground, eliminating the need for manual locking and significantly improving ease of use and operational efficiency. By using high-pressure sterilization-resistant stainless steel and employing a hollow structure design, it meets the stringent sterilization and hygiene requirements of high-cleanliness environments such as SPF animal facilities.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A portable climbing stool suitable for SPF animal housing, characterized in that, It includes a first pedal (101), a second pedal (102), an adjustable support assembly, and a pulley spring guide system. The second pedal (102) is located directly above the first pedal (101), the adjustable support assembly is located between the first pedal (101) and the second pedal (102), and the pulley spring guide system is located in the cavity enclosed by the first pedal (101).

2. The portable climbing stool suitable for SPF animal rooms according to claim 1, characterized in that, The second pedal (102) is a circular pedal, and the first pedal (101) is a cylindrical structure.

3. The portable climbing stool suitable for SPF animal rooms according to claim 1, characterized in that, The edge of the second pedal (102) curves outward at a certain angle to form an outward-curving structure (104), and the outward-curving structure (104) forms a protective ring; or / and The second pedal (102) has a hook (105) on its edge.

4. The portable climbing stool suitable for SPF animal housing according to any one of claims 1-3, characterized in that, The adjustable support assembly includes an inner support sleeve (302), an outer support sleeve (301), and a limiting mechanism (304). The lower end of the inner support sleeve (302) is connected to the first pedal (101), and the upper end of the outer support sleeve (301) is connected to the second pedal (102). The inner support sleeve (302) is located inside the outer support sleeve (301). The inner support sleeve (302) and the outer support sleeve (301) are sequentially provided with positioning holes (305) along the height direction. The limiting mechanism (304) passes through the positioning holes (305) of the inner support sleeve (302) and the outer support sleeve (301), respectively.

5. The portable climbing stool for SPF animal housing according to claim 4, characterized in that, The adjustable support assembly also includes three support rods (303), one end of each support rod (303) is connected to the second pedal (102), and the other end is connected to the outer support sleeve (301). The connection points of the three support rods (303) with the outer support sleeve (301) as the center are evenly distributed in a circle with the connection points of the two support rods (303) with the second pedal (102).

6. The portable climbing stool suitable for SPF animal housing according to any one of claims 1-3, characterized in that, The first pedal (101) is a bottomless cylindrical structure. The pulley spring guide system (2) includes a central screw (201), a pulley (206), a pulley support tray (204), and a telescopic device (203). The telescopic device is sleeved on the outside of the central screw (201). The upper end of the central screw (201) is connected to the first pedal (101), and the lower end is connected to the pulley support tray (204). The pulley (206) is connected to the bottom of the pulley support tray (204).

7. The portable climbing stool for SPF animal housing according to claim 6, characterized in that, A limit nut (205) is installed at the lower end of the central screw (201).

8. The portable climbing stool for SPF animal housing according to claim 6, characterized in that, The upper surfaces of the first pedal (101) and the second pedal (102) are uniformly provided with anti-slip protrusions (103).

9. The portable climbing stool for SPF animal housing according to claim 6, characterized in that, The bottom outer edge of the first pedal (101) is provided with an anti-slip silicone ring (106).

10. The portable climbing stool for SPF animal housing according to claim 6, characterized in that, The mobile climbing stools suitable for SPF animal rooms are all made of materials resistant to high-pressure sterilization.

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