Modular folding structure and experimental culture shelf having the same

Abstract

This invention discloses a modular folding structure and an experimental culture rack containing the same. The modular folding structure allows for adjusting the height between two culture racks using height adjustment components to accommodate culture containers of different sizes. The folding components activate a flip-over electric actuator that links various rods to unfold the folding culture rack, thereby accommodating more culture containers. The structure comprises a first culture rack, a second culture rack, a culture container placement slot, two sets of height adjustment components, and two sets of folding components. The modular folding structure is mounted on an experimental culture rack. The second culture rack is placed on a flip-over connecting frame of the experimental culture rack. The two sets of height adjustment components are fixedly connected to two opposite sides of the second culture rack. The first culture rack is connected to the height adjustment components, and the two sets of folding components are rotatably connected to the other two sides of the second culture rack.

Description

Technical Field

[0001] This invention relates to a modular folding structure and an experimental culture rack having the same, which is a modular folding structure that can accommodate more culture containers when installed on an experimental culture rack. It belongs to the field of experimental equipment technology, and specifically relates to a modular folding structure that adjusts the height between two layers of culture racks to accommodate culture containers of different sizes by means of a height adjustment component, and activates a flipping electric actuator through the folding component to open up the folding culture rack to accommodate more culture containers. Background Technology

[0002] In scientific research fields such as biology and medicine, experimental culture racks are crucial equipment for culturing samples such as cells and microorganisms. However, traditional experimental culture racks have revealed numerous drawbacks over long-term use. First, the connections between components are loose, resulting in poor overall stability. In actual use, they struggle to stably support culture containers, and even slight vibrations or external interference can cause the containers to shake or tip over, leading not only to waste of experimental materials but also potentially causing experimental failure. Second, traditional culture racks cannot effectively address the issue of culture medium stratification. Due to gravity and static conditions, oxygen and nutrients in the culture medium are unevenly distributed. The upper layer is rich in oxygen but lacks nutrients, while the lower layer is relatively rich in nutrients but lacks oxygen. This severely affects the growth environment of the cultures, resulting in inconsistent growth states and significant deviations in experimental data.

[0003] CN205774579U discloses a special rack for cell culture experiments, including a base and a rack body. The upper part of the rack body has an inclined plate with multiple grooves of different sizes. A support plate is fixedly connected to the middle of the rack body, and the support plate has multiple bottom holes for cell culture pipettes and bottle cap holes. Multiple grooves are also provided on one side of the rack body. This experimental culture rack is difficult to stably support culture containers. Slight vibration or external interference can cause the culture containers to shake or even tip over. Furthermore, due to gravity and static conditions, the distribution of oxygen and nutrients in the culture medium is uneven. The upper layer is rich in oxygen but lacks nutrients, while the lower layer is relatively rich in nutrients but lacks oxygen. This seriously affects the growth environment of the cultures, resulting in inconsistent growth states and significant deviations in experimental data.

[0004] To address the aforementioned issues, the applicant filed a separate Chinese invention patent application entitled "An Experimental Culture Rack," which describes a culture rack capable of constructing a stable frame and using cylinders and electric actuators to power multi-angle rotation of the rack, breaking up the stratification of the culture medium to provide an optimal culture environment for the samples. However, the aforementioned experimental culture rack has limited space, and in some scientific research experiments requiring the culture of large numbers of samples, the space provided by the rack is quickly filled, making it difficult to cope with demanding situations. Summary of the Invention

[0005] To improve the above situation, the present invention provides a modular folding structure and an experimental culture rack having the same. The modular folding structure allows for adjusting the height between two layers of the culture rack to accommodate culture containers of different sizes by means of a height adjustment component. The folding component activates a flipping electric actuator to link the rods and unfold the folding culture rack, thereby accommodating more culture containers.

[0006] The modular folding structure and experimental culture rack of the present invention are implemented as follows: The modular folding structure and experimental culture rack of the present invention include a first culture rack, a second culture rack, a culture container placement slot, two sets of height adjustment components, and two sets of folding components. The second-layer culture rack is characterized by being placed on a flip-up connecting frame, with two sets of height adjustment components fixedly connected to opposite sides of the second-layer culture rack, the first-layer culture rack connected to the height adjustment components, and two sets of folding components rotatably connected to the other two sides of the second-layer culture rack. The lifting adjustment components can adjust the distance between the first-layer and second-layer culture racks, and the folding components can support more culture containers after flipping. The bottom surface of the second-layer culture rack is fixedly connected to the top surface of the other end of two long rods inside multiple flip-connecting frames. The flip-connecting frames are symmetrically arranged about the second-layer culture rack, and multiple through holes from the top surface to the bottom surface are evenly distributed on the second-layer culture rack. The second-layer culture rack has multiple slots for placing culture containers. The height adjustment assembly consists of a lifting frame, a lifting controller, a sliding groove, a first slider, and a displacement sensor. The bottom of the lifting frame is fixedly connected to the middle of one side of the second-layer culture rack. The lifting frame is connected to the lifting controller. The lifting frame has a sliding groove on the side that connects to the second culture rack. One end of the first slider is placed inside the lifting frame and is fixedly connected to the lifting end of the lifting frame. The displacement sensor is connected to the first slider. The other end of the first slider is fixedly connected to the middle of the side of the first layer of culture rack. The first layer of the culture rack has multiple slots for placing culture containers. The folding assembly consists of a folding culture rack, a rotating hinge, a first rotating rod, a second connecting rod, a second rotating rod, a fourth rotating rod, a first connecting rod, a third rotating rod, and a flipping electric actuator. The folding culture rack is rotatably connected to the first-layer culture rack via a rotating hinge. The folding culture rack has multiple slots for placing culture containers. Each of the folding culture racks and the first-layer culture rack has a placement slot in the middle of its adjacent location. The first rotating rod is placed in the slot of the folding culture rack, and both ends are fixedly connected to the folding culture rack. One end of each of the two second connecting rods is rotatably connected to the side of the first rotating rod near both ends. The other ends of the two second connecting rods are respectively rotatably connected to the sides of the second rotating rod near both ends. Two fourth rotating rods are placed in the first-layer culture rack placement slots, and both ends are fixedly connected to the first-layer culture rack. The first connecting rod has an L-shaped structure, and the middle positions of the two first connecting rods are respectively rotatably connected to both ends of a fourth rotating rod. One end of the first connecting rod is fixedly connected to the second rotating rod. The other end of the first connecting rod is rotatably connected to the third rotating rod. One end of the flip-up electric actuator is rotatably connected to another fourth rotating rod, and the other end of the flip-up electric actuator is fixedly connected to a third rotating rod. Furthermore, one of the lifting frames is replaced with a three-sided sliding groove lifting frame. One end of the second slider is placed inside the three-sided sliding groove lifting frame and is fixedly connected to the lifting end of the three-sided sliding groove lifting frame. One end of the L-shaped connecting rod is fixedly connected to the side of one end of the second slider. The other end of the L-shaped connecting rod is fixedly connected to the first layer of the culture rack. The two L-shaped connecting rods are symmetrically arranged about the three-sided sliding groove lifting frame.

[0007] The present invention also relates to an experimental culture rack, which includes a support frame, an auxiliary connecting plate, an electric actuator, two sets of rotating connecting assemblies, a limiting assembly, and a flipping assembly. The feature is that, of the two sets of rotating connecting assemblies, one set is placed at the bottom of the support frame via an auxiliary connecting plate, and the other set is placed at the bottom of the flipping assembly. There are four sets of limiting assemblies, each corresponding to one of the four sides of the top of the support frame. One end of the electric actuator is connected to the rotating connecting assembly at the bottom of the support frame, and the other end is connected to the rotating connecting assembly at the bottom of the flipping assembly. The flipping assembly is movably positioned on the top surface of the support frame. The electric actuator drives the flipping assembly to flip via the rotating connecting assemblies, and the limiting assemblies limit the flipping assembly during its flipping process. The limiting assembly consists of a rotating auxiliary rod, a cylinder, an L-shaped connecting plate, and an L-shaped limiting plate. The rotating auxiliary rod is fixedly placed on the top surface of the square frame of the support frame. The top surface of the rotating auxiliary rod has an arc-shaped groove with an arc radius of less than or equal to half an arc. The top of the side of the rotating auxiliary rod, which is on the same plane as the inner side of the square frame of the support frame, has two locking slots, which are respectively located near both ends of the rotating auxiliary rod. The vertical plate of the L-shaped connecting plate is fixedly connected to the outer side of the support frame and the middle position of the side of the rotating auxiliary rod. The cylinder is fixedly connected to the L-shaped connecting plate near one end. An L-shaped limiting plate is fixedly placed at the other end of the cylinder. The flipping assembly consists of a flipping connecting frame and a culture rack. The flip-up connecting frame consists of a cylinder and two long rods. The cylinder is placed on the slot for the rotating auxiliary rod. The flip-up connecting frame corresponds one-to-one with the rotating auxiliary rod. One end of each of the two long rods is fixedly connected to the side of the cylinder near both ends, and the two long rods are engaged in the slots of the rotating auxiliary rod. The diameter of the cylinder is slightly smaller than the diameter of the arc-shaped groove on the rotating auxiliary rod. The horizontal portion of the L-shaped limiting plate is positioned vertically above and close to the inner cylindrical portion of the flip-up connecting frame. The bottom surface of the culture rack is fixedly connected to the top surface of the other end of two long rods inside multiple flip-connecting frames. The flip-connecting frames are symmetrically arranged about the culture rack, and the culture rack has multiple through holes evenly distributed from the top surface to the bottom surface. The rotating connection assembly consists of a support plate, a direction-adjusting transmission ball, and a U-shaped connecting block. In one set of the rotating connection components, two support plates are fixedly connected to the center of the bottom surface of the culture rack; in the other set of the rotating connection components, two support plates are fixedly connected to the center of the auxiliary connection plate. The directional adjustment transmission ball consists of a sphere and four rotating rods. One end of each rotating rod is fixedly connected to the side of the sphere. The four rotating rods are arranged equidistantly along a central axis of the sphere. Two rotating rods with coincident central axes within the directional adjustment transmission ball pass through a support plate and are rotatably connected to it. The direction-adjusting transmission ball is positioned between its corresponding U-shaped connecting blocks, and the two other rotating rods with their central axes coinciding inside the direction-adjusting transmission ball pass through the two vertical plates of the U-shaped connecting blocks and are rotatably connected to the U-shaped connecting blocks. Both ends of the electric actuator are fixedly connected to the U-shaped connecting blocks. Furthermore, a shock-absorbing pad, made of rubber, is fixedly placed at the bottom of the support frame. Furthermore, the culture rack is replaced with an irregularly shaped culture rack, which is fixedly connected to the top surface of the other end of two long rods inside multiple flip-connecting frames. The irregularly shaped culture rack has multiple through holes with circular and square cross-sections from top to bottom. Beneficial effects

[0008] I. Significantly increase the number of culture containers within a limited space to meet diverse experimental needs.

[0009] Second, it can flexibly adjust the spacing between each layer and the load-bearing area, making it suitable for various experimental scenarios.

[0010] Third, it saves space and is easy to use. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of an experimental culture rack according to the present invention; Figure 2 This is a three-dimensional structural diagram of an experimental culture rack according to the present invention; Figure 3 This is a three-dimensional structural diagram of an experimental culture rack according to Embodiment 2 of the present invention; Figure 4 This is a three-dimensional structural diagram of an experimental culture rack according to Example 3 of the present invention; Figure 5 This is a three-dimensional structural diagram of a modular folding structure according to the present invention; Figure 6 This is a three-dimensional structural diagram of a modular folding structure according to the present invention; Figure 7 This is a three-dimensional structural diagram of Embodiment 2 of the modular folding structure of the present invention. Attached Figure

[0012] The components are: culture rack (1), rotating auxiliary rod (2), cylinder (3), L-shaped connecting plate (4), L-shaped limiting plate (5), support frame (6), flip connecting frame (7), auxiliary connecting plate (8), support plate (9), direction adjustment transmission ball (10), U-shaped connecting block (11), electric push rod (12), shock absorption pad (13), irregular culture rack (14), lifting frame (15), sliding groove (16), first slider (17), folding culture rack (18), first layer culture rack (19), second layer culture rack (20), lifting controller (21), displacement sensor (22), first connecting rod (23), rotating hinge (24), culture container placement groove (25), first rotating rod (26), second connecting rod (27), second rotating rod (28), third rotating rod (29), flip electric push rod (30), fourth rotating rod (31), L-shaped connecting rod (32), three-sided sliding groove lifting frame (33), second slider (34). Detailed Implementation Example 1

[0013] The modular folding structure and experimental culture rack of the present invention are implemented as follows: The modular folding structure and experimental culture rack of the present invention include a first-layer culture rack (19), a second-layer culture rack (20), a culture container placement slot (25), two sets of height adjustment components, and two sets of folding components. The second-layer culture rack (20) is characterized in that it is placed on the flip-connecting frame (7), the two sets of height adjustment components are fixedly connected to the two opposite sides of the second-layer culture rack (20), the first-layer culture rack is connected to the height adjustment components, the two sets of folding components are rotatably connected to the other two sides of the second-layer culture rack, the lifting adjustment components can adjust the distance between the first-layer culture rack (19) and the second-layer culture rack (20), and the folding components can carry more culture containers after flipping. The bottom surface of the second-layer culture rack (20) is fixedly connected to the top surface of the other end of two long rods inside the multiple flip-connecting frames (7). The flip-connecting frames (7) are symmetrically arranged about the second-layer culture rack (20), and the second-layer culture rack (20) has multiple through holes evenly distributed from the top surface to the bottom surface. The second layer of the culture rack (20) has multiple culture container placement slots (25). The height adjustment assembly consists of a lifting frame (15), a lifting controller (21), a sliding groove (16), a first slider (17), and a displacement sensor (22). The bottom end of the lifting frame (15) is fixedly connected to the middle of one side of the second-layer culture rack (20). The lifting frame (15) is connected to the lifting controller (21). The lifting frame (15) has a sliding groove (16) on the side that connects to the second-layer culture rack (20). One end of the first slider (17) is placed inside the lifting frame (15) and is fixedly connected to the lifting end of the lifting frame (15). The displacement sensor (22) is connected to the first slider (17). The other end of the first slider (17) is fixedly connected to the middle of the side of the first layer culture rack (19). The first layer of the culture rack (19) has multiple culture container placement slots (25). The folding assembly consists of a folding culture rack (18), a rotating hinge (24), a first rotating rod (26), a second connecting rod (27), a second rotating rod (28), a fourth rotating rod (31), a first connecting rod (23), a third rotating rod (29), and a flipping electric actuator (30). The folding culture rack (18) is rotatably connected to the first-layer culture rack (19) via a rotating hinge (24). Preferably, the rotating hinge (24) has a torsion spring embedded inside and is coated with a wear-resistant coating on its surface. The folding culture rack (18) has multiple culture container placement slots (25). Each of the folding culture rack (18) and the first-layer culture rack (19) has a placement slot in the middle of their adjacent locations. The first rotating rod (26) is placed in the slot of the folding culture rack (18), and both ends are fixedly connected to the folding culture rack (18). One end of each of the two second connecting rods (27) is rotatably connected to the side of the first rotating rod (26) near both ends. The other ends of the two second connecting rods (27) are respectively rotatably connected to the sides of the second rotating rod (28) near both ends. Two fourth rotating rods (31) are placed in the placement slot of the first layer culture rack (19), and both ends are fixedly connected to the first layer culture rack (19). The first connecting rod (23) has an L-shaped structure. The middle positions of the two first connecting rods (23) are respectively rotatably connected to both ends of a fourth rotating rod (31). One end of the first connecting rod (23) is fixedly connected to the second rotating rod (28). The other end of the first connecting rod (23) is rotatably connected to the third rotating rod (29). One end of the flipping electric actuator (30) is rotatably connected to another fourth rotating rod (31), and the other end of the flipping electric actuator (30) is fixedly connected to the third rotating rod (29). In use, the lifting controller (21) issues a command to control the lifting frame (15) to start working. After the lifting frame (15) starts, it drives the first slider (17) connected to it to move upward along the sliding groove (16). Since the other end of the first slider (17) is fixedly connected to the middle of the side of the first layer culture rack (19), the first layer culture rack (19) moves upward accordingly, gradually increasing the distance between the first layer culture rack (19) and the second layer culture rack (20), making it convenient for the operator to place the culture container on the second layer culture rack (20). After the culture container is placed on the second layer culture rack (20), the lifting controller (21) is operated again to control the lifting frame (15) to drive the first slider (17) and the first layer culture rack (19) to move downward. During this process, the displacement sensor (22) monitors the distance between the first layer culture rack (19) and the second layer culture rack (20) in real time and feeds the distance data back to the operator. When the displacement sensor (22) detects that the distance between the first layer culture rack (19) and the second layer culture rack (20) is slightly greater than the distance between the second layer culture rack (19) and the second layer culture rack (20), the displacement sensor (22) will detect the distance between the first layer culture rack (19) and the second layer culture rack (20) to be slightly greater than the distance between the second layer culture rack (19) and the second layer culture rack (20). When the height of the culture container on the second-layer culture rack (20) is reached, the operator stops the lowering operation of the lifting frame (15). At this time, the flipping electric push rod (30) is activated. One end of the flipping electric push rod (30) is rotatably connected to the fourth rotating rod (31), and the other end is fixedly or rotatably connected to the third rotating rod (29). When the flipping electric push rod (30) is working, it pulls the third rotating rod (29) to move towards the middle of the second-layer culture rack (20). The first connecting rod (23) can rotate around the fourth rotating rod (31). When the first connecting rod (23) rotates... Driven by the second rotating rod (28) and the second connecting rod (27), the folding culture rack (18) is rotated around the rotating hinge (24) to gradually open and be placed on both sides of the second layer culture rack (20). After the folding culture rack (18) is opened, the operator can place more culture containers in the culture container placement slot (25) of the first layer culture rack (19) and the folding culture rack (18). After the placement is completed, the entire experimental culture rack is ready and the relevant experimental equipment can be started. Example 2

[0014] The difference between this embodiment and embodiment 1 is that: one of the lifting frames (15) is replaced by a three-sided sliding lifting frame (33), one end of the second slider (34) is placed in the three-sided sliding lifting frame (33) and is fixedly connected to the lifting end of the three-sided sliding lifting frame (33), one end of the L-shaped connecting rod (32) is fixedly connected to the side of one end of the second slider (34), and the other end of the L-shaped connecting rod (32) is fixedly connected to the first layer culture rack (19). The two L-shaped connecting rods (32) are symmetrically arranged about the three-sided sliding lifting frame (33). When in use, the supporting force is applied from multiple points through the symmetrical L-shaped connecting rods (32), and the gravity of the first layer culture rack (19) is distributed to multiple parts, which greatly improves the stability of the support of the first layer culture rack (19), effectively avoids structural damage or deformation caused by excessive local force, and extends the service life of the culture rack; The design of the first layer culture rack (19) and the second layer culture rack (20) working together allows the layered structure to make full use of the space, placing more culture containers in the limited vertical space, improving the space utilization of the culture rack, and facilitating the simultaneous experimental operation and observation of multiple culture containers. The design of connecting the lifting frame (15) to the lifting controller (21) allows for precise control of the lifting of the lifting frame (15) via the lifting controller (21), thereby flexibly adjusting the distance between the first layer culture rack (19) and the second layer culture rack (20). This enables operators to conveniently adjust the distance between the two layers of culture racks according to the height of different culture containers and experimental requirements, ensuring that culture containers can be placed and removed smoothly, thus improving the applicability of the culture rack. The design of the displacement sensor (22) connected to the first slider (17) enables real-time monitoring of the distance between the first layer culture rack (19) and the second layer culture rack (20). Operators can precisely control the descent position of the first layer culture rack (19) to avoid it falling too far and damaging the culture containers on the second layer culture rack (20), thus improving the accuracy and safety of the operation. The folding culture rack (18) is rotatably connected to the first layer culture rack (19) via a rotating hinge (24). The rotating hinge (24) is designed with an embedded torsion spring. Rotating the hinge (24) allows the folding culture rack (18) to be flexibly flipped, which can be unfolded when needed to increase the placement space of the culture container, and can be folded up when not needed to save space. Through the torsion spring, the flipping speed and force of the folding culture rack (18) can be controlled to avoid generating a large impact force or shaking during the flipping process, thereby improving the convenience and safety of operation. The goal is to enable the height between the two culture racks to be adjusted by the height adjustment component to accommodate culture containers of different sizes, and to enable the flipping electric push rod (30) to activate the folding component to open the folding culture rack (18) so as to accommodate more culture containers.

[0015] It should be noted that the clamping structure needs to be installed on one of the following experimental culture racks; The experimental culture rack includes a support frame (6), an auxiliary connecting plate (8), an electric actuator (12), two sets of rotating connecting components, a limiting component, and a flipping component. The feature is that, of the two sets of rotating connecting assemblies, one set of rotating connecting assemblies is placed at the bottom of the support frame (6) via an auxiliary connecting plate (8), and the other set of rotating connecting assemblies is placed at the bottom of the flipping assembly. There are four sets of limiting assemblies, each set corresponding to one of the four sides of the top of the support frame. One end of the electric push rod (12) is connected to the rotating connecting assembly at the bottom of the support frame (6), and the other end of the electric push rod (12) is connected to the rotating connecting assembly at the bottom of the flipping assembly. The flipping assembly is movably positioned on the top surface of the support frame (6). The electric push rod (12) drives the flipping assembly to flip via the rotating connecting assemblies. The limiting assemblies limit the flipping assembly during the flipping process. The limiting assembly consists of a rotating auxiliary rod (2), a cylinder (3), an L-shaped connecting plate (4), and an L-shaped limiting plate (5). The rotating auxiliary rod (2) is fixedly placed on the top surface of the square frame of the support frame (6). The top surface of the rotating auxiliary rod (2) has an arc-shaped groove with an arc radius less than or equal to half an arc radius. The rotating auxiliary rod (2) and the inner side of the square frame of the support frame (6) are on the same plane, and two slots are opened at the top of the side, and the slots are respectively set near the two ends of the rotating auxiliary rod (2). The L-shaped connecting plate (4) is fixedly connected to the outer side of the support frame (6) and the middle position of the side of the rotating auxiliary rod (2). The cylinder (3) is fixedly connected to the L-shaped connecting plate (4) near one end. An L-shaped limiting plate (5) is fixedly placed at the other end of the cylinder (3). The flipping assembly consists of a flipping connecting frame (7) and a culture rack (1). The flip-connecting frame (7) consists of a cylinder and two long rods. The cylinder is placed on the slot of the rotating auxiliary rod (2). The flip-connecting frame (7) corresponds one-to-one with the rotating auxiliary rod (2). One end of each of the two long rods is fixedly connected to the side of the cylinder near both ends. The two long rods are also locked in the slots of the rotating auxiliary rod (2). The diameter of the cylinder is slightly smaller than the diameter of the arc groove on the rotating auxiliary rod (2). The horizontal part of the L-shaped limiting plate (5) is placed above the cylindrical part inside the flip-connecting frame (7) in the vertical direction and is placed close to it. The bottom surface of the culture rack (1) is fixedly connected to the top surface of the other end of two long rods inside multiple flip-connecting frames (7). The flip-connecting frames (7) are symmetrically arranged about the culture rack (1), and multiple through holes from the top surface to the bottom surface are evenly opened on the culture rack (1). The rotating connection assembly consists of a support plate (9), a direction adjustment transmission ball (10), and a U-shaped connecting block (11). One set of rotating connection components has two support plates (9) fixedly connected to the middle of the bottom surface of the culture rack (1), and another set of rotating connection components has two support plates (9) fixedly connected to the middle of the auxiliary connection plate (8). The direction adjustment transmission ball (10) consists of a ball and four rotating rods. One end of each rotating rod is fixedly connected to the side of the ball. The four rotating rods are arranged equidistantly along the circumference of a central axis of the ball. The rotating rods with two coinciding central axes inside the direction adjustment transmission ball (10) pass through a support plate (9) and are rotatably connected to the support plate (9). The direction adjustment transmission ball (10) is placed between its corresponding U-shaped connecting blocks (11), and the rotating rods with the other two central axes coinciding inside the direction adjustment transmission ball (10) pass through the two vertical plates of the U-shaped connecting block (11) respectively, and are rotatably connected to the U-shaped connecting block (11). The two ends of the electric actuator (12) are fixedly connected to the U-shaped connecting block (11), respectively. In use, the culture container is placed on the culture rack (1) through the evenly spaced through holes. The direction adjustment transmission ball (10) is pre-connected to the support plate (9) and the U-shaped connecting block (11). This structure ensures that the electric push rod (12) can rotate flexibly around the direction adjustment transmission ball (10) below in two mutually perpendicular directions, activating a cylinder (3). After the cylinder (3) operates, it will drive the L-shaped limiting plate (5) connected to it to lock onto the smaller diameter cylindrical part of the flipping connecting frame (7), completing the L-shaped connection. After the positioning plate (5) is positioned, the electric push rod (12) is immediately driven. After the electric push rod (12) is started, the culture rack (1) will rotate around the central axis of the cylinder of the corresponding flipping connecting frame (7). Then the electric push rod (12) is retracted to make the culture rack (1) flat. Multiple cylinders (3) are started in sequence, and the above positioning and rotation operation steps are repeated. That is, after each cylinder (3) is started and the positioning is completed, the electric push rod (12) is driven to make the culture rack (1) rotate. This cycle operation can make the culture rack (1) flip in four directions in sequence. By the cyclic flipping of the culture rack (1) in four directions, the layering phenomenon caused by gravity or static placement of the culture medium can be effectively broken, thereby ensuring that oxygen and nutrients in the culture medium are evenly distributed. Example 2

[0016] The difference between this embodiment and embodiment 1 is that: the bottom of the support frame (6) is fixed with a shock-absorbing pad (13), which is made of rubber. When in use, it can effectively buffer the impact force brought by the device during operation, reduce the friction between the bottom of the support frame and the ground, and at the same time reduce the noise caused by vibration, creating a quieter experimental environment and avoiding noise interference with experimental operation and the precise operation of instruments and equipment. Example 3

[0017] The difference between this embodiment and embodiment 1 is that the culture rack (1) is replaced by an irregularly shaped culture rack (14). The irregularly shaped culture rack (14) is fixedly connected to the top surface of the other end of the two long rods in the multiple flip-connecting racks (7). The irregularly shaped culture rack (14) has multiple through holes with circular and square cross-sections from top to bottom. When used, it greatly expands the scope of application and can meet the placement requirements of culture containers of different shapes. It allows experimenters to no longer be limited to a single shape when selecting culture containers, providing more flexibility for experiments. It can select the most suitable shape of culture container according to the specific requirements of the experiment and the characteristics of the sample. The support frame (6) consists of a square frame and two U-shaped plates. The U-shaped plates are placed at the bottom of the square frame. The two ends of the same U-shaped plate are fixedly connected to the bottom surface of the square frame near the two ends on the same side. The two U-shaped plates are symmetrically arranged about the square frame. The square frame provides a stable planar frame, ensuring that the overall shape of the culture rack is regular and facilitating the installation and layout of each component. The U-shaped plate structure greatly enhances the stability of the support frame, enabling it to bear the weight of the culture rack and culture containers, and is not prone to tilting or shaking, thus providing a solid foundation for the stable operation of the entire experimental culture rack. The top surface of the rotating auxiliary rod (2) has an arc-shaped groove, the height of which is less than or equal to the radius of the arc-shaped groove. The rotating auxiliary rod (2) and the inner side of the square frame of the support frame (6) are on the same plane. Two slots are opened on the top side of the rotating auxiliary rod (2) and the slots are respectively set near the two ends of the rotating auxiliary rod (2). This design can be adapted to the cylinder of the flipping connecting frame (7), providing a smooth track for the rotation of the flipping connecting frame (7), reducing the friction during the rotation process, and making the flipping of the culture rack (1) more stable. The slots set near the two ends are used to lock the long rod of the flipping connecting frame (7), precisely limiting the position of the flipping connecting frame (7), ensuring that it will not be displaced during the rotation process, and ensuring the accuracy and reliability of the flipping action of the culture rack. The direction adjustment transmission ball (10) consists of a ball and four rotating rods. One end of the rotating rod is fixedly connected to the side of the ball. The design of the four rotating rods being equidistantly arranged around the central axis of the ball gives the electric push rod (12) the ability to rotate flexibly in two vertical directions, so that the culture rack (1) can achieve more precise angle adjustment during the flipping process, break the layering of the culture medium more comprehensively, optimize the culture environment, and improve the accuracy and reliability of the experimental results. The electric actuator (12) is positioned between two U-shaped connecting blocks (11), and its two ends correspond one-to-one with the horizontal plates of the two U-shaped connecting blocks (11). This design provides a stable driving force, which, through the coordinated work of the direction adjustment transmission ball (10) and the U-shaped connecting blocks (11), drives the culture rack (1) to rotate around the flipping connecting frame (7). Its power output can be precisely controlled to ensure that the culture rack (1) flips according to the set angle and sequence, effectively achieving functions such as breaking the stratification of the culture medium and increasing the sample loading capacity.

[0018] The goal is to achieve the purpose of building a stable frame through the culture rack (1), and providing power through the cylinder (3) and electric push rod (12) to achieve multi-angle flipping of the culture rack to break the layering of the culture medium and provide an excellent culture environment for the sample.

[0019] It should be noted that, unless otherwise explicitly specified and limited, the terms "placed," "connected," and "linked" should be interpreted broadly. For example, they can refer to fixed connections such as folded edges, rivets, pins, adhesives, and welds; detachable connections such as threaded connections, snap-fit ​​connections, and hinges; integral connections; electrical connections; direct connections; or indirect connections via an intermediate medium; or internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0020] It should be further noted that, in order to keep the description simple and clear, the above specific embodiments only describe the differences between them and other embodiments. However, those skilled in the art should know that the above specific embodiments are also independent technical solutions.

Claims

1. A modular folding structure, comprising a first-layer culture rack, a second-layer culture rack, a culture container placement slot, two sets of height adjustment components, and two sets of folding components, characterized in that: The modular folding structure is installed on an experimental culture rack. The second-layer culture rack is placed on the flip-connecting frame of the experimental culture rack. The two sets of height adjustment components are fixedly connected to the two opposite sides of the second-layer culture rack. The first-layer culture rack is connected to the height adjustment components. The two sets of folding components are rotatably connected to the other two sides of the second-layer culture rack. The lifting adjustment components can adjust the distance between the first-layer culture rack and the second-layer culture rack. The folding components can carry more culture containers after flipping. The bottom surface of the second-layer culture rack is fixedly connected to the top surface of the other end of two long rods in multiple flip-connecting frames. Multiple culture container placement slots are opened on the second-layer culture rack.

2. The modular folding structure according to claim 1, characterized in that... One of them The lifting frame is replaced by a three-sided sliding groove lifting frame. One end of the second slider is placed inside the three-sided sliding groove lifting frame and is fixedly connected to the lifting end of the three-sided sliding groove lifting frame. One end of the L-shaped connecting rod is fixedly connected to the side of one end of the second slider, and the other end of the L-shaped connecting rod is fixedly connected to the first layer of culture rack.

3. A modular folding structure according to claim 1, characterized in that... The flip-connecting frame is symmetrically arranged about the second culture rack, and the second culture rack has a plurality of through holes evenly distributed from the top surface to the bottom surface.

4. A modular folding structure according to claim 1, characterized in that... The height adjustment assembly consists of a lifting frame, a lifting controller, a sliding groove, a first slider, and a displacement sensor. The bottom end of the lifting frame is fixedly connected to the middle of one side of the second-layer culture rack. The lifting frame is connected to the lifting controller. A sliding groove is opened on the side of the lifting frame connected to the second-layer culture rack. One end of the first slider is placed inside the lifting frame and is fixedly connected to the lifting end of the lifting frame. The displacement sensor is connected to the first slider. The other end of the first slider is fixedly connected to the middle of the side of the first-layer culture rack. Multiple culture container placement slots are opened on the first-layer culture rack.

5. A modular folding structure according to claim 1, characterized in that... The folding assembly consists of a folding culture rack, a rotating hinge, a first rotating rod, a second connecting rod, a second rotating rod, a fourth rotating rod, a first connecting rod, a third rotating rod, and a flipping electric actuator. The folding culture rack is rotatably connected to the first-layer culture rack via the rotating hinge. The folding culture rack has multiple culture container placement slots. Each folding culture rack has a placement slot in the middle of its adjacent section to the first-layer culture rack. The first rotating rod is placed in the placement slot of the folding culture rack, and both ends are fixedly connected to the folding culture rack. One end of each of the two second connecting rods is rotatably connected to the side of the first rotating rod near both ends, and the other end of each of the two second connecting rods is rotatably connected to the side of the second rotating rod near both ends. Two fourth rotating rods are placed in the placement slot of the first-layer culture rack, and both ends are fixedly connected to the first-layer culture rack. The middle of each of the two first connecting rods is rotatably connected to both ends of a fourth rotating rod. One end of the first connecting rod is fixedly connected to the second rotating rod, and the other end of the first connecting rod is rotatably connected to the third rotating rod. One end of the flipping electric actuator is rotatably connected to another fourth rotating rod, and the other end of the flipping electric actuator is fixedly connected to the third rotating rod.

6. A modular folding structure according to claim 5, characterized in that... The first connecting rod has an L-shaped structure.

7. A modular folding structure according to claim 5, characterized in that... The rotating hinge has a torsion spring embedded inside and is coated with a wear-resistant coating on its surface.

8. A modular folding structure according to claim 1, characterized in that... The design of the first and second culture racks working together, with its layered structure, makes full use of space, allowing more culture containers to be placed in a limited vertical space, improving the space utilization of the culture rack, and facilitating simultaneous experimental operations and observations of multiple culture containers.

9. A modular folding structure according to claim 2, characterized in that... The two L-shaped connecting rods are symmetrically arranged about the three-sided sliding groove lifting frame.

10. A modular folding structure according to claim 1, characterized in that... The experimental culture rack includes a support frame, an auxiliary connecting plate, an electric actuator, two sets of rotating connecting assemblies, a limiting assembly, and a flipping assembly. One set of rotating connecting assemblies is positioned at the bottom of the support frame via the auxiliary connecting plate, and the other set is positioned at the bottom of the flipping assembly. Four sets of limiting assemblies are respectively positioned on the four sides of the top of the support frame. One end of the electric actuator is connected to the rotating connecting assembly located at the bottom of the support frame, and the other end is connected to the rotating connecting assembly located at the bottom of the flipping assembly. The flipping assembly is movably positioned... On the top surface of the support frame, the electric actuator drives the flipping assembly to flip via a rotating connecting assembly. The limiting assembly limits the flipping assembly during its flipping process. The limiting assembly consists of a rotating auxiliary rod, a cylinder, an L-shaped connecting plate, and an L-shaped limiting plate. The rotating auxiliary rod is fixedly placed on the top surface of the square frame of the support frame. The top surface of the rotating auxiliary rod has an arc-shaped groove with an arc radius less than or equal to half an arc. Two slots are located at the top of the side of the rotating auxiliary rod that is on the same plane as the inner side of the square frame of the support frame, and these slots are respectively positioned near both ends of the rotating auxiliary rod. The vertical plate of the L-shaped connecting plate is fixedly connected to the outer side of the support frame and the middle of the side of the rotating auxiliary rod. The cylinder is fixedly connected to the L-shaped connecting plate near one end, and an L-shaped limiting plate is fixedly placed at the other end of the cylinder. The flipping assembly consists of a flipping connecting frame and a culture rack. The flipping connecting frame consists of a cylinder and two long rods. The cylinder is placed on the slot of the rotating auxiliary rod. The flipping connecting frame and the rotating auxiliary rod correspond one-to-one. One end of each of the two long rods is fixedly connected to the side of the cylinder near both ends, and the two long rods are engaged in the slots of the rotating auxiliary rod. The diameter of the cylinder is slightly smaller than the diameter of the arc-shaped groove on the rotating auxiliary rod. The horizontal plate of the L-shaped limiting plate is placed vertically above the inner cylindrical part of the flipping connecting frame and close to it. The bottom surface of the culture rack is fixedly connected to the top surface of the other end of the two long rods in the multiple flipping connecting frames. The flipping connecting frames are symmetrically arranged about the culture rack. The culture rack has multiple through holes evenly spaced from top to bottom. The rotating connection assembly consists of a support plate, a directional adjustment transmission ball, and a U-shaped connecting block. In one set of the rotating connection assembly, two support plates are fixedly connected to the center of the bottom surface of the culture rack. In another set of the rotating connection assembly, two support plates are fixedly connected to the center of an auxiliary connecting plate. The directional adjustment transmission ball consists of a sphere and four rotating rods. One end of each rotating rod is fixedly connected to the side of the sphere. The four rotating rods are equidistantly arranged along a central axis of the sphere. Two rotating rods with the same central axis in the directional adjustment transmission ball pass through a support plate and are rotatably connected to it. The directional adjustment transmission ball is placed between its corresponding U-shaped connecting blocks. Two other rotating rods with the same central axis in the directional adjustment transmission ball pass through the two vertical plates of the U-shaped connecting block and are rotatably connected to it. Both ends of the electric actuator are fixedly connected to the U-shaped connecting blocks.

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