An animal experiment fixture and its experimental table

Abstract

This utility model relates to the field of animal experiments, specifically to an animal experiment fixing component and its experimental platform. The platform includes a main body, a controller on its front, and a mounting slot on its top. An adjustment mechanism is located inside the mounting slot, and a rotating fixing component is located at the connection of the adjustment mechanism. A support platform is also fixedly installed at the center of the top of the main body. By using an adjustment mechanism composed of a first servo motor, a worm gear, a turbine, and a bidirectional lead screw, two moving seats and the fixing component can be driven to achieve automated counter-movement. This allows for rapid and precise adaptation to the limb spacing of animals of different sizes, replacing traditional manual adjustment methods and significantly improving the efficiency and accuracy of fixed position adjustment.

Description

Technical Field

[0001] This utility model relates to the field of animal experimental technology, specifically to an animal experimental fixture and its experimental table. Background Technology

[0002] In the field of animal testing, animal restraint devices are fundamental equipment for ensuring the accuracy and safety of experimental procedures. Traditional animal restraint devices typically consist of a restraint platform, manually adjustable clamps, and simple straps. Their core function is to physically confine the animal's limbs and torso within the experimental area to meet the needs of routine experiments such as puncture, injection, and dissection. For example, some devices use a rail-type limb restraint frame in conjunction with a head restraint for basic positioning, while the restraint cylinder design commonly used in small animal experiments achieves initial fixation by restricting the animal's movement space. These devices can meet basic needs in routine experimental scenarios, but their functional design often focuses on a single restraint mode, lacking a comprehensive consideration of the convenience of experimental operation and animal welfare.

[0003] However, existing animal restraint devices have revealed several limitations in practical applications. First, the adjustment of the restraint position in traditional devices relies on manual operation, such as adjusting the position of each limb restraint frame individually using threaded rods or sliders. This is not only time-consuming and labor-intensive, but also difficult to accurately match the limb spacing of animals of different sizes. Second, existing devices generally lack automated flipping functions. If it is necessary to perform a ventral-dorsal conversion operation during the experiment, the restraint must be manually released, the animal flipped, and then re-restrained. This process not only increases the workload of the experimenter, but may also cause the restraint position to shift due to the animal's struggle. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing an animal experimental fixture and its experimental table.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: an animal experiment fixing component and its experimental table, including an experimental table body, a controller is provided on the front of the experimental table body, an installation groove is provided on the top of the experimental table body, an adjustment mechanism is provided inside the installation groove, a rotating fixing component is provided at the connection of the adjustment mechanism, and a support platform is also fixedly provided at the center of the top of the experimental table body. The adjustment mechanism includes a driving component and a transmission component. The driving component is used to drive the transmission component to rotate and drive the rotating fixed assembly to move. The rotating fixing assembly includes two movable seats, two fixing components, and a second servo motor. The two fixing components are symmetrically installed inside the two movable seats to fix the animal's limbs. The second servo motor is fixedly installed on the side wall of one of the movable seats to drive one of the fixing components to rotate, thereby causing the fixed animal to flip over.

[0006] Automated operation is achieved through an integrated controller, while the mounting slot provides a stable installation space for the adjustment mechanism. The rotating fixing component works in conjunction with the adjustment mechanism to flexibly adapt to different experimental needs. The support platform effectively supports the animal's body. The overall structure is compact and functionally divided, improving the convenience and stability of experimental operations. The symmetrical fixing component provides balanced fixation for the animal's limbs, preventing positional shifts during fixation. A second servo motor drives the fixing component to rotate, enabling animal rotation without manual release of the fixation, reducing experimental steps and minimizing animal stress.

[0007] Furthermore, the driving component includes a mounting base, which is fixedly installed inside the experimental platform body. The mounting base also has a worm gear inside, and a first servo motor is provided on the back side wall of the mounting base.

[0008] The mounting base provides stable support for the worm gear, ensuring stability during worm gear transmission; the rear-mounted first servo motor saves surface space on the experimental platform, reduces interference from experimental operations on the motor, and extends the service life of the equipment.

[0009] Furthermore, the transmission component includes a bidirectional lead screw, which is disposed inside the mounting groove. A turbine is fixedly disposed at the center of the bidirectional lead screw, and two nuts are symmetrically threaded onto the bidirectional lead screw.

[0010] The double-acting lead screw, in conjunction with symmetrical nuts, enables the synchronous and opposite movements of the two moving seats, ensuring the symmetry of the spacing adjustment of the fixed components; the turbine is fixedly connected to the double-acting lead screw, providing a reliable structural foundation for power transmission and ensuring transmission efficiency.

[0011] Furthermore, the turbine and the worm are meshed together, and the first servo motor is used to drive the worm to rotate, thereby driving the turbine to rotate; The turbine is fixedly connected to the bidirectional lead screw, so that when the turbine rotates, it drives the bidirectional lead screw to rotate. When the bidirectional lead screw rotates, it drives the two nuts to move in opposite directions.

[0012] Furthermore, the fixing component includes a bearing, which is fixedly installed inside the movable seat. The bearing is also provided with a rotating rod inside, and a rotating plate is fixedly connected to the inner side wall of the rotating rod. A limiting groove is also provided inside the inner side wall of the movable seat, and several limiting sliders are slidably connected inside the limiting groove. Two fixing rings are also provided on the inner wall of the rotating plate.

[0013] Furthermore, the rotating rod is used to drive one of the rotating rods to rotate, thereby driving the rotating plate to rotate. The rotating plate is fixedly connected to several limiting sliders, and the several limiting sliders are slidably connected to the limiting grooves. The fixing ring is used in conjunction with the rubber line group to fix the animal's limbs. After fixing, the support platform is used to support the animal's body.

[0014] When the rotating rod drives the rotating plate to rotate, the limiting slider slides along the slide groove to further ensure the stability of the rotation trajectory and ensure a smooth animal flipping process; the fixing ring and the rubber line group work together to effectively fix the limbs and reduce the pressure damage to the animal's limbs through the elasticity of the rubber; the support platform supports the animal's body and avoids the stress response caused by the body being suspended after fixation.

[0015] The beneficial effects of this utility model are: by setting an adjustment mechanism consisting of a first servo motor, a worm gear, a turbine, and a bidirectional lead screw, two moving seats and fixed components can be driven to achieve automated counter-movement, which can quickly and accurately adapt to the limb spacing of animals of different sizes, replace the traditional manual adjustment method, and significantly improve the efficiency and accuracy of fixed position adjustment.

[0016] By using a second servo motor to drive the rotating rod and rotating plate to rotate, and with the help of bearings to reduce frictional resistance, the animal can be smoothly turned over after being fixed. The body position can be changed without manually unfixing it, which greatly reduces the experimental operation steps, reduces the risk of fixed position displacement caused by repeated operation, and also reduces the operation burden of experimental personnel.

[0017] The animal's limbs are secured by a combination of a fixing ring and rubber cord. The elasticity of the rubber avoids the limb compression damage caused by traditional rigid clamps. At the same time, the combination of the rotating plate, the limiting slider, and the limiting groove ensures the animal's stability during the flipping process, reducing additional injuries caused by struggling. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the main body of this utility model; Figure 2 This is a bottom view of the adjustment mechanism of this utility model; Figure 3 This is a schematic diagram of the rotating and fixing assembly of this utility model. Figure 4This is a cross-sectional structural diagram of the rotating and fixing component of this utility model.

[0019] The attached diagram lists the components represented by each number as follows: 10. Experimental platform body; 20. Controller; 30. Mounting slot; 40. Adjustment mechanism; 401. Two-way lead screw; 402. Turbine; 403. Mounting base; 404. Worm gear; 405. First servo motor; 406. Nut; 50. Rotating and fixing assembly; 501. Moving base; 502. Bearing; 503. Rotating rod; 504. Second servo motor; 505. Limiting slide; 506. Limiting slider; 507. Rotating plate; 508. Fixing ring; 60. Support platform. Detailed Implementation

[0020] 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, and 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.

[0021] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0023] Example 1 Figure 1 This is a structural diagram of the main body of this utility model. Figure 2 This is a bottom view of the adjustment mechanism of this utility model. Figure 3This is a schematic diagram of the rotating and fixing assembly of this utility model. Figure 4 This is a schematic cross-sectional view of the rotating and fixing assembly of this utility model, as shown below. Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the device includes an experimental platform body 10, a controller 20 on the front of the experimental platform body 10, an installation groove 30 on the top of the experimental platform body 10, an adjustment mechanism 40 inside the installation groove 30, a rotation fixing component 50 at the connection of the adjustment mechanism 40, and a support platform 60 fixedly installed at the center of the top of the experimental platform body 10. During the experiment, the controller 20, as the core control unit, receives operation commands and can control the starting and stopping of the adjustment mechanism 40, the movement and flipping of the rotating fixing component 50, and other actions. The mounting slot 30 provides a closed and stable installation space for the adjustment mechanism 40, preventing the adjustment mechanism 40 from being exposed to the outside and interfered with by experimental operations. The adjustment mechanism 40 drives the rotating fixing component 50 to achieve position adjustment through its own movement, so as to adapt to experimental animals of different sizes. The rotating fixing component 50 is used to fix the animal's limbs and can drive the animal to flip over, meeting the needs of multi-directional experimental operations. The support platform 60 provides support for the torso of the animal after it is fixed, preventing the animal's body from dangling in the air.

[0024] The adjustment mechanism 40 includes a driving component and a transmission component. The driving component is used to drive the transmission component to rotate and drive the rotating fixed assembly 50 to move. The driving component outputs torque as a power source, which transmits the power to the transmission component. The transmission component, through its own structural characteristics (such as screw drive, gear meshing, etc.), converts the rotational motion of the driving component into linear motion or motion along a specific trajectory, thereby driving the rotating fixed component 50 connected to it to achieve position adjustment, so that the rotating fixed component 50 can flexibly change the spacing according to the animal's body shape.

[0025] like Figures 3 to 4 As shown, the rotating fixing assembly 50 includes two movable seats 501, two fixing components, and a second servo motor 504. The two fixing components are symmetrically installed inside the two movable seats 501 for fixing the animal's limbs. The second servo motor 504 is fixedly installed on the side wall of one of the movable seats 501 for driving one of the fixing components to rotate, thereby causing the fixed animal to flip over.

[0026] Two movable seats 501 each carry a fixing component. The symmetrical installation ensures that the fixing components can fix the animal's limbs symmetrically from both sides, ensuring the stability of the fixation. The fixing components constrain the animal's limbs through their own structure (such as fixing rings 508, restraints, etc.). When it is necessary to flip the animal, the second servo motor 504 starts and outputs power to drive the fixed component connected to it to rotate. Since the animal's limbs are fixed by the two fixing components, the rotation of one fixing component will drive the animal's body to flip synchronously, achieving the effect of changing the animal's position without removing the fixation.

[0027] like Figure 2 As shown, the driving component includes a mounting base 403, which is fixedly installed inside the experimental platform body 10. The mounting base 403 also has a worm gear 404 inside, and a first servo motor 405 is provided on the back side wall of the mounting base 403.

[0028] Mounting base 403 provides rigid support for worm gear 404 through fixed connection with experimental platform body 10, ensuring that worm gear 404 will not undergo radial displacement during rotation; first servo motor 405 is fixed to the back side wall of mounting base 403 as a drive source, and its output shaft is connected to worm gear 404. When first servo motor 405 is started, the output shaft rotates and directly drives worm gear 404 to rotate synchronously, providing initial power for adjustment mechanism 40.

[0029] The transmission component includes a two-way lead screw 401, which is located inside the mounting groove 30. A turbine 402 is fixedly installed at the center of the two-way lead screw 401. Two nuts 406 are also symmetrically threaded onto the two-way lead screw 401.

[0030] The two-way lead screw 401 has threads with opposite directions at both ends, and two nuts 406 respectively engage with the threads at both ends. When the two-way lead screw 401 rotates, the two nuts 406 will move towards or away from each other along the axial direction of the lead screw. The worm gear 402 is fixed at the center of the two-way lead screw 401 and serves as a power receiving component. It can transmit external power (such as the driving force of the worm gear 404) to the two-way lead screw 401, causing the two-way lead screw 401 to rotate as a whole. The mounting groove 30 forms an axial limit on the two-way lead screw 401 to prevent it from axially moving during rotation.

[0031] The turbine 402 meshes with the worm gear 404. The first servo motor 405 drives the worm gear 404 to rotate, which in turn drives the turbine 402 to rotate. The turbine 402 is fixedly connected to the bidirectional lead screw 401, so that when the turbine 402 rotates, it drives the bidirectional lead screw 401 to rotate. When the bidirectional lead screw 401 rotates, it drives the two nuts 406 to move in opposite directions.

[0032] After the first servo motor 405 starts, it drives the worm gear 404 to rotate. Since the worm gear 402 meshes with the worm gear 404, the rotational motion of the worm gear 404 is converted into the rotational motion of the worm gear 402 through tooth surface contact. The worm gear 402 is fixedly connected to the bidirectional lead screw 401. When the worm gear 402 rotates, it will drive the bidirectional lead screw 401 to rotate synchronously. When the bidirectional lead screw 401 rotates, the threads at both ends with opposite directions will generate an axial force on the two nuts 406, causing the two nuts 406 to move in opposite directions along the lead screw axis (i.e., simultaneously moving closer to or away from the center), thereby driving the rotating fixed assembly 50 connected to the nuts 406 to achieve spacing adjustment.

[0033] Example 2 Based on the above embodiments, this embodiment also makes the following improvements, such as... Figures 3 to 4 As shown, the fixing assembly includes a bearing 502, which is fixedly installed inside the movable seat 501. The bearing 502 is also provided with a rotating rod 503 inside. A rotating plate 507 is fixedly connected to the inner side wall of the rotating rod 503. A limiting groove 505 is also provided in the inner side wall of the movable seat 501. Several limiting sliders 506 are slidably connected inside the limiting groove 505. Two fixing rings 508 are also provided on the inner wall of the rotating plate 507.

[0034] The outer ring of bearing 502 is fixed to the movable seat 501, and the inner ring is connected to the rotating rod 503. This reduces the frictional resistance when the rotating rod 503 rotates, ensuring that the rotating rod 503 can rotate flexibly while limiting its radial displacement. When the rotating rod 503 rotates, it will drive the rotating plate 507 fixed to it to rotate synchronously. During the rotation of the rotating plate 507, the limiting slider 506 fixed to it will slide along the limiting groove 505. The limiting groove 505 constrains the movement trajectory of the limiting slider 506, thereby limiting the rotation trajectory of the rotating plate 507 and preventing the rotating plate 507 from deviating. The fixing ring 508 is used to connect the rubber cord group, which is used to fix the animal by wrapping the rubber cord group around its limbs.

[0035] The rotating rod 503 is used to drive one of the rotating rods 503 to rotate, thereby driving the rotating plate 507 to rotate. The rotating plate 507 is fixedly connected to several limiting sliders 506. The several limiting sliders 506 are slidably connected to the limiting groove 505. The fixing ring 508 is used in conjunction with the rubber line group to fix the animal's limbs. After fixing, the support platform 60 is used to support the animal's body.

[0036] When the second servo motor 504 drives the rotating rod 503 to rotate, the rotating rod 503 drives the rotating plate 507 to rotate around the axis of the rotating rod 503. During the rotation of the rotating plate 507, the limiting slider 506 slides along the limiting groove 505. The cooperation between the groove and the slider limits the swing of the rotating plate 507, ensuring that the rotating plate 507 rotates smoothly. When the fixing ring 508 cooperates with the rubber cord group, the rubber cord group passes through the fixing ring 508 and wraps around the animal's limbs and tightens. The elasticity of the rubber achieves flexible fixation of the limbs, avoiding rigid clamping that could damage the animal. After the animal is fixed, its torso contacts the support platform 60. The support platform 60 bears part of the body weight, preventing the animal from having a violent stress response due to excessive force on its limbs or its body being suspended in the air.

[0037] It should be noted that the electrical equipment and components mentioned above are all programmed and controlled using existing PLC controllers 20. Since these are mature technologies, they will not be described in detail here.

[0038] Workflow Experimental preparation stage: Start the experimental platform body 10, complete the system initialization through the controller 20 on the front, and ensure that all components such as the adjustment mechanism 40 and the rotating fixing component 50 are in the initial standby state; place the experimental animal on the support platform 60, so that the animal's torso is initially placed on the support platform 60, providing basic support for subsequent fixation.

[0039] Limb fixation operation: The animal's limbs are fixed to two symmetrical fixation components by using the fixing ring 508 in the rotating fixation component 50 in conjunction with the rubber thread group. The rubber thread group passes through the fixing ring 508 and wraps around the animal's limbs and then tightens. The elasticity of the rubber is used to achieve flexible fixation and avoid rigid compression damage to the animal's limbs.

[0040] Spacing adjustment adaptation: According to the animal's body size, the first servo motor 405 of the adjustment mechanism 40 is activated by the controller 20. The first servo motor 405 drives the worm gear 404 to rotate. The worm gear 404 meshes with the turbine 402 to drive the bidirectional lead screw 401 to rotate synchronously. When the bidirectional lead screw 401 rotates, the threads at its two ends with opposite directions drive the two symmetrical nuts 406 to make opposite displacements, thereby driving the two moving seats 501 connected to the nuts 406 to move closer or further away synchronously, accurately adjusting the spacing of the fixing components to ensure the stability of the animal's body position after the limbs are fixed.

[0041] Body position flipping operation (performed as needed): When the experiment requires adjusting the animal's body position (such as turning from the ventral side to the rear side), the controller 20 starts the second servo motor 504, which drives the connected rotating rod 503 to rotate. The rotating rod 503 drives the rotating plate 507 to rotate synchronously. During the rotation of the rotating plate 507, the limiting slider 506 fixed to it slides along the limiting groove 505 on the inner side of the moving seat 501, forming a trajectory constraint on the rotating plate 507 to ensure its smooth rotation. Since the animal's limbs are fixed by the two fixed components, the rotation of the rotating plate 507 will drive the animal's body to flip synchronously, so that the body position can be changed without removing the fixation. During the flipping process, the support platform 60 always provides effective support for the animal's torso.

[0042] Experimental and closing stages: After the body position is adjusted, experimental operations such as puncture, injection, and dissection can be performed; after the experiment, the controller 20 is used to reverse the operation of the adjustment mechanism 40 to increase the spacing of the fixing components, loosen the rubber line group to release the limb fixation, remove the experimental animal, and finally shut down the controller 20 and the experimental table system.

[0043] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0044] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0045] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An animal experimental fixture and its experimental platform, characterized in that, The experimental platform includes a main body (10), a controller (20) is provided on the front of the main body (10), an installation slot (30) is provided on the top of the main body (10), an adjustment mechanism (40) is provided inside the installation slot (30), a rotating fixing component (50) is provided at the connection of the adjustment mechanism (40), and a support platform (60) is fixedly provided at the center of the top of the main body (10). The adjustment mechanism (40) includes a driving component and a transmission component. The driving component is used to drive the transmission component to rotate and drive the rotating fixed assembly (50) to move. The rotating fixing assembly (50) includes two movable seats (501), two fixing components, and a second servo motor (504). The two fixing components are symmetrically installed inside the two movable seats (501) for fixing the animal's limbs. The second servo motor (504) is fixedly installed on the side wall of one of the movable seats (501) for driving one of the fixing components to rotate, thereby causing the fixed animal to flip over.

2. The animal experiment fixture and its experimental table according to claim 1, characterized in that, The driving component includes a mounting base (403), which is fixedly installed inside the experimental platform body (10). The mounting base (403) is also provided with a worm gear (404) inside, and a first servo motor (405) is provided on the back side wall of the mounting base (403).

3. The animal experiment fixture and its experimental table according to claim 2, characterized in that, The transmission component includes a bidirectional lead screw (401), which is disposed inside the mounting groove (30). A turbine (402) is fixedly disposed at the center of the bidirectional lead screw (401), and two nuts (406) are symmetrically threaded onto the bidirectional lead screw (401).

4. The animal experiment fixture and its experimental table according to claim 3, characterized in that, The turbine (402) meshes with the worm (404), and the first servo motor (405) drives the worm (404) to rotate, thereby driving the turbine (402) to rotate. The turbine (402) is fixedly connected to the double-acting lead screw (401), and the turbine (402) rotates to drive the double-acting lead screw (401) to rotate. When the bidirectional lead screw (401) rotates, it drives the two nuts (406) to move in opposite directions.

5. The animal experiment fixture and its experimental table according to claim 4, characterized in that, The fixing assembly includes a bearing (502), which is fixedly installed inside the movable seat (501). The bearing (502) is also provided with a rotating rod (503) inside. A rotating plate (507) is fixedly connected to the inner wall of the rotating rod (503). A limiting groove (505) is also provided in the inner wall of the movable seat (501). Several limiting sliders (506) are slidably connected inside the limiting groove (505). Two fixing rings (508) are also provided on the inner wall of the rotating plate (507).

6. The animal experiment fixture and its experimental table according to claim 5, characterized in that, The rotating rod (503) is used to drive one of the rotating rods (503) to rotate, thereby driving the rotating plate (507) to rotate. The rotating plate (507) is fixedly connected to several limiting sliders (506). Several limiting sliders (506) are slidably connected to limiting grooves (505). The fixing ring (508) is used in conjunction with the rubber line group to fix the animal's limbs. After fixing, the support platform (60) is used to support the animal's body.

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