A laboratory animal safety transport vehicle

Abstract

This invention provides a laboratory animal safety transport vehicle, belonging to the field of animal transportation technology. It solves the technical problems of poor protective stability during transportation and the inability to quickly load and unload existing laboratory animal transport vehicles, thus improving transportation efficiency and management convenience. The laboratory animal safety transport vehicle includes a frame, wheels rotatably connected to the bottom of the frame, a front end fixedly connected to one end of the frame, a cargo box fixedly installed above the frame, and a door hinged to the rear of the cargo box. In this invention, a linkage structure between a limiting unit and the protective box assembly achieves fully automatic mechanical locking of the protective box within the cargo box. When the box is pushed to a predetermined position along the guide strip, a gear cylinder presses against a protrusion, causing the limiting plate to automatically insert upwards into the box's through hole and the bottom hole of the baffle, completing the automatic locking of the box in the vertical direction with the cargo box, thus firmly combining the box, baffle, and cargo box floor into a single unit.

Description

Technical Field

[0001] This invention belongs to the field of animal transportation technology, and relates to a laboratory animal transport vehicle, particularly a laboratory animal safety protection transport vehicle. Background Technology

[0002] Laboratory animals are animals that have been artificially bred, whose microorganisms and parasites are controlled, whose genetic background is clear or whose origin is well-known, and are used for scientific research, teaching, production, testing and other scientific experiments. Laboratory animals are different from ordinary livestock or pets. There are strict national standards that regulate their genetic background, microorganisms and parasites. Therefore, laboratory animals have high production requirements and are all produced centrally and independently by production units.

[0003] A search revealed a laboratory animal transport vehicle disclosed in Chinese patent literature [Application No.: CN202210880944.7; Publication No.: CN115230569A]. This vehicle includes a cargo compartment with a front end fixedly installed on the right side. A baffle is slidably installed on the outer surface of the compartment, and a display screen and control panel are also fixedly installed on the outer surface. This vehicle uses a refrigeration system to transport laboratory animals into the compartment. A temperature sensor detects the temperature inside the compartment. If the temperature is too high, the refrigeration unit and water pump are activated via the control panel. Water is added to the water tank through the inlet pipe, and the refrigeration unit cools the water in the tank. The water pump then pumps the cooled water into the return pipe, causing a large amount of cool air and a small amount of water droplets to form on the outer surface of the return pipe. Since the other end of the return pipe extends into the water tank, the cooled water is constantly circulating.

[0004] Although the laboratory animal transport vehicle disclosed in this patent achieves temperature control inside the vehicle through a refrigeration mechanism, which can ensure the comfort of laboratory animals to a certain extent, the vehicle still has shortcomings in terms of animal fixation, shock absorption, and protective structure during transportation. Laboratory animals are prone to container displacement, collision, or even rollover during transportation due to vehicle bumps, sudden braking, etc., which may cause animal injury or stress reaction and easily interfere with subsequent experiments. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a safe protective transport vehicle for laboratory animals. The technical problem this invention aims to solve is: how to achieve stable and secure protection for laboratory animals during transport, facilitating rapid loading and unloading, thereby improving transport efficiency and management convenience.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A laboratory animal safety transport vehicle includes a frame, wheels rotatably connected to the bottom of the frame, a front end fixedly connected to one end of the frame, a compartment fixedly installed above the frame, and a door connected to the rear of the compartment via hinges. Two guide strips are fixedly connected to the inner bottom wall of the compartment, and the two guide strips are symmetrically arranged about the central axis of the compartment. Multiple toothed plates are equidistantly arranged on both sides of the outer side of the guide strips, and the toothed plates are fixedly installed on the inner bottom wall of the compartment. A protective box assembly is movably arranged on the surface of the guide strips, and a limiting unit is drivenly connected to the bottom of the protective box assembly, and the limiting unit is located between the two toothed plates.

[0008] The protective box assembly includes a box body, and ventilation nets are provided on both sides of the bottom of the box body. Moving units are installed around the bottom of the box body, and a groove is provided in the middle of the bottom end of the box body. A transmission unit is provided inside the groove. A through hole is provided at the bottom end of the box body, and the through hole is located between two moving units.

[0009] The bottom of the box is provided with concave holes around the perimeter to accommodate the movable unit. The movable unit includes a first telescopic spring. The top end of the first telescopic spring is fixedly connected to the inner top wall of the concave hole. The bottom end of the first telescopic spring is fixedly connected to a sliding plate, and the bottom end of the sliding plate is fixedly installed with a universal wheel.

[0010] The inner wall of the concave hole is provided with a slide track that can accommodate the sliding of the slide plate;

[0011] The transmission unit includes a mounting rod, which is rotatably connected to the bottom of the housing. A gear cylinder is fixedly connected to the outer wall of the mounting rod, and a toothed plate is movably engaged at the bottom end of the gear cylinder.

[0012] The box body is equipped with baffles on both sides, and the bottom end of the baffles is integrally formed with a protruding post. The protruding post is located above the through hole. The two sides of the box body are provided with column grooves corresponding to the protruding post, and the two sides of the column grooves are provided with horizontal units.

[0013] The working principle of this invention is as follows: First, the experimental animal is placed inside the box, and then a baffle is installed. The baffle is initially positioned by inserting its bottom protrusion into the pre-set grooves on both sides of the box. During placement, the side holes on the side of the baffle automatically align with the insert rod inside the box. The first return spring pushes the connecting plate, causing the insert rod to be inserted into the side hole, completing the initial lateral fixation of the baffle. At the same time, the second return spring pushes the "L"-shaped insert plate outward, automatically locking into the limiting hole on the side of the baffle, forming a double lock. This effectively prevents the baffle from loosening or shifting due to collisions during transportation. Furthermore, by integrating the ventilation window and handle into the baffle, air circulation inside the box is ensured, and manual handling is convenient. After the animal is placed inside the box and the baffle is sealed to the box, the entire protective box assembly is pushed in along the two pre-set guide strips inside the carriage. This positions the casters at the bottom of the box on the outside of the two guide strips. The rotating wheel connected to the fixed plate inside the gear cylinder drives the rotating belt, causing the bottom surface of the rotating belt to contact the inside of the belt. The two guide strips further assist the box in maintaining stable horizontal movement, reducing friction and noise. When the box is moved laterally on the surface of the toothed plate, it is easy to push it into the designated position. During the lateral movement of the box, the first telescopic spring allows the caster wheel to adapt to slight undulations on the surface of the guide strip. After the box is pushed to the designated position, the through hole at the bottom of the box is exactly above the limiting unit. At this time, the movement of the end of the gear cylinder will squeeze the protrusion located between the two toothed plates, causing the protrusion to drive the support plate to press down. This causes the rotating shafts on both sides of the support plate to slide in the groove of the transmission plate, forcing the transmission plate to rotate around the rotating rod, thereby pushing the limiting plate at its outer end to move upward. This allows the limiting plate to pass through the through hole of the box and the aligned bottom hole of the baffle in sequence, achieving the fixing effect between the box and the carriage. This allows the box to be automatically fixed after being pushed into the designated position. Even when the vehicle is moving, turning, or bumping, it can effectively prevent the protective box from shifting, tipping over, or loosening in any direction, ensuring the safety of the experimental animals.

[0014] A fixing plate is fixedly installed inside the protruding teeth of the gear cylinder, and a rotating wheel is rotatably connected above the fixing plate. The outer walls of the two rotating wheels are fitted with a rotating belt, and the bottom end of the rotating belt is movably attached between two guide strips. The bottom end of the rotating belt is on the same horizontal plane as the bottom outer wall of the gear cylinder.

[0015] The above structure, through the meshing of the gear cylinder and the toothed plate, achieves both transmission and guidance functions during the pushing of the protective box. At the same time, by attaching the rotating belt between the two guide bars, it ensures that the gear cylinder maintains a horizontal movement trajectory when moving on the surface of the guide bars. Furthermore, the flexible contact reduces rigid friction and noise, ensuring that the protective box moves smoothly along the predetermined path in the carriage, avoiding deviation or jamming. Meanwhile, the rotating belt can buffer slight vibrations, improving the stability and structural durability of animal transportation.

[0016] The transverse unit includes a first reset spring, which is fixedly installed inside the housing. A connecting plate is fixedly installed at the other end of the first reset spring, and multiple insert rods are fixedly installed on the outer wall of the connecting plate. A baffle is inserted into the outer wall of the insert rod.

[0017] Side holes are provided on both sides of the protruding post below the baffle, corresponding to the insertion rod.

[0018] With the above structure, the connecting plate and the insert rod are pushed outward by the first return spring, so that the insert rod is automatically inserted into the side hole on the side of the baffle, realizing the quick lateral fixation of the baffle. This structure does not require additional tools or complicated operations. It can automatically lock when the baffle is placed, which greatly improves loading and unloading efficiency. At the same time, the cooperation between the insert rod and the side hole restricts the lateral displacement of the baffle during transportation, preventing the baffle from loosening due to vehicle bumps, ensuring that the experimental animals are in a stable space, and enhancing transportation safety and management convenience.

[0019] The baffle is detachably connected to the side wall of the box on both sides, and a ventilation window is fitted on the top of the baffle. A handle is provided below the ventilation window and is fixedly installed on the surface of the baffle.

[0020] With the above structure, the baffle can be detached to achieve flexible assembly and disassembly. Users can load and unload experimental animals inside the box. At the same time, the integrated design of ventilation window and handle ensures air circulation inside the box to meet the breathing needs of animals, and facilitates manual operation. The handle is located below the ventilation window for easy gripping and force application, and facilitates the disassembly of the baffle and box, making it convenient for users to open and close the box.

[0021] A second reset spring is fixedly installed on the inner side wall of the box, and an insert plate is fixedly installed on the other end of the second reset spring. The insert plate is arranged in an "L" shape, and a movable groove is opened on the inner side of the box to accommodate the movement of the insert plate.

[0022] The baffle has multiple limiting holes on both sides corresponding to the insert plate.

[0023] With the above structure, under the elastic action of the second return spring, the second return spring pushes the "L"-shaped insert plate outward, so that it automatically locks into the limiting hole on the side of the baffle, forming a locking and limiting effect. This effectively prevents the baffle from loosening due to damage caused by the experimental animals during transportation, further enhancing the integrity and stability of the box structure and ensuring that the animals are in a safe and enclosed space during transportation.

[0024] The limiting unit includes a fixed cylinder, which is fixedly installed on the inner bottom wall of the carriage. The inner bottom wall of the carriage is also fixedly connected to a second telescopic spring, which is located inside the fixed cylinder. A support plate is fixedly installed on the top of the second telescopic spring, and transmission plates are rotatably connected to both sides of the support plate. A rotating rod is fixedly connected to the middle of the transmission plate, and mounting plates are rotatably connected to both ends of the rotating rod. The bottom end of the mounting plate is fixedly connected to the inner bottom wall of the carriage.

[0025] A limiting plate is fixedly connected to the end of the transmission plate away from the support plate, and a sliding groove is provided on the side of the transmission plate close to the support plate, and a rotating shaft connected to the support plate is slidably connected inside the sliding groove.

[0026] A protrusion is fixedly connected to the top of the tray, and the protrusion is located between two toothed plates.

[0027] With the above structure, the limiting unit pushes the pallet upward through the second telescopic spring. The pallet slides in the groove of the transmission plate through the rotating shaft, causing the transmission plate to rotate around the rotating rod, thereby inserting the limiting plate upward into the through hole at the bottom of the protective box, realizing the automatic locking of the protective box. At the same time, the protrusion is set between the two toothed plates to ensure the precise alignment of the pallet. After the protective box is pushed into the carriage, the gear cylinder squeezes the protrusion to automatically lock it, ensuring the limiting effect between the box and the carriage, while avoiding manual intervention, greatly improving operating efficiency and transportation safety.

[0028] The bottom end of the baffle is provided with a bottom hole corresponding to the through hole, and a limit plate is movably inserted into both the through hole and the bottom hole.

[0029] With the above structure, after the baffle is installed, the bottom hole of the baffle is aligned with the through hole of the box. This allows the limiting plate to pass through both holes simultaneously during the limiting process, achieving linkage locking between the baffle and the box. The baffle is not only fixed by the lateral insert rod, but also directly connected to the limiting unit at the bottom, forming a three-dimensional lock. This achieves the fixing effect of the box to the vehicle during transportation, greatly enhancing the overall structure of the box's resistance to bumps and its protective reliability, ensuring that the experimental animals are in a completely stable environment.

[0030] Compared with the prior art, the experimental animal safety transport vehicle of the present invention has the following advantages:

[0031] 1. In this invention, the linkage structure between the limiting unit and the protective box assembly realizes the fully automatic mechanical locking of the protective box in the carriage. When the box is pushed to the predetermined position along the guide bar, the gear cylinder squeezes the protrusion, so that the limiting plate automatically inserts upward into the box through hole and the bottom hole of the baffle, completing the automatic locking of the box in the vertical direction with the carriage, so that the box, the baffle and the carriage floor are firmly combined into a whole. With this setting, when the vehicle is driving, turning or bumping, it can effectively resist displacement, overturning and loosening in all directions, completely avoiding the risk of box collision, animal injury or escape caused by insecure fixing in traditional transportation, and greatly enhancing the safety and reliability of the transportation process.

[0032] 2. In this invention, under the action of the baffle, the bottom protrusion and the groove achieve initial positioning, and the plug driven by the first return spring automatically inserts into the side hole to complete the lateral fixation. Then, the "L"-shaped plug pushed by the second return spring is inserted into the limiting hole to form a double lock. No external tools are needed, which makes it convenient for users to place and pick up experimental animals. Moreover, by integrating the ventilation window and the handle into the baffle, ventilation inside the box is ensured while facilitating manual operation, which improves the versatility and ease of use of the equipment.

[0033] 3. In this invention, by setting a moving unit at the bottom of the protective box, support and initial buffer are provided when the box moves along the guide strip, and it can adapt to the slight undulations on the surface of the guide strip during lateral movement. At the same time, in the transmission unit, the meshing of the gear cylinder and the toothed plate ensures linear guidance, and the rotating belt is attached between the two guide strips to help maintain the horizontal movement trajectory, while reducing friction vibration and noise, effectively attenuating the bumps and impacts from the road surface, thereby reducing the stress response of experimental animals. The stable internal environment helps to maintain the stable physiological state of the animals, which is conducive to improving the consistency of data in subsequent scientific research, and takes into account both the smoothness of the transportation process and the comfort of the animals. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a laboratory animal safety transport vehicle according to the present invention;

[0035] Figure 2 This is a cross-sectional structural schematic diagram of a laboratory animal safety protection transport vehicle according to the present invention;

[0036] Figure 3 This is a schematic diagram of the connection structure between the protective box assembly and the guide strip in this invention;

[0037] Figure 4 This is a top view of the toothed plate and guide strip in this invention.

[0038] Figure 5 This is a schematic diagram of the toothed plate and the limiting unit in this invention;

[0039] Figure 6 This is a cross-sectional structural diagram of the toothed plate and the limiting unit in this invention;

[0040] Figure 7 In this invention Figure 6 A magnified structural diagram at point A;

[0041] Figure 8 This is a schematic diagram of the limiting unit in this invention;

[0042] Figure 9 This is a schematic diagram of the protective box assembly in this invention;

[0043] Figure 10 This is a schematic diagram of the bottom structure of the protective box assembly in this invention;

[0044] Figure 11 This is a cross-sectional structural diagram of the box body and baffle in this invention;

[0045] Figure 12 This is a schematic diagram of the transmission unit in this invention;

[0046] Figure 13 This is a cross-sectional structural diagram of the transmission unit in this invention;

[0047] Figure 14 This is a schematic diagram of the baffle structure in this invention.

[0048] In the diagram, 1. Frame; 2. Wheel; 3. Front of the vehicle; 4. Carriage; 5. Carriage door; 6. Guide strip; 7. Tooth plate; 8. Protective box assembly; 81. Box body; 82. Ventilation mesh; 83. Moving unit; 831. First telescopic spring; 832. Slide plate; 833. Caster wheel; 834. Slide rail; 84. Transmission unit; 841. Mounting rod; 842. Gear cylinder; 843. Fixing plate; 844. Rotating wheel; 845. Rotating belt; 85. Through hole; 86. First return spring; 87. Connecting plate; 88. Insert rod; 9. Limiting unit; 901. Fixed cylinder; 902. Second telescopic spring; 903. Support plate; 904. Protrusion; 905. Transmission plate; 906. Slide groove; 907. Rotating rod; 908. Mounting plate; 909. Limiting plate; 10. Baffle; 11. Ventilation window; 12. Handle; 13. Second return spring; 14. Insert plate; 15. Limiting hole; 16. Side hole; 17. Bottom hole. Detailed Implementation

[0049] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0050] like Figures 1-14As shown, a laboratory animal safety transport vehicle includes a frame 1, wheels 2 rotatably connected to the bottom of the frame 1, a front end 3 fixedly connected to one end of the frame 1, a compartment 4 fixedly installed above the frame 1, a compartment door 5 hinged to the rear of the compartment 4, guide strips 6, toothed plates 7, a protective box assembly 8, a box body 81, a ventilation net 82, a moving unit 83, a first telescopic spring 831, a sliding plate 832, swivel wheels 833, a slide rail 834, a transmission unit 84, a mounting rod 841, a gear cylinder 842, a fixing plate 843, a rotating wheel 844, a rotating belt 845, a through hole 85, a first return spring 86, a connecting plate 87, an insertion rod 88, a limiting unit 9, a fixing cylinder 901, and a second telescopic spring. Spring 902, support plate 903, protrusion 904, transmission plate 905, slide groove 906, rotating rod 907, mounting plate 908, limiting plate 909, baffle 10, ventilation window 11, handle 12, second reset spring 13, insert plate 14, limiting hole 15, side hole 16 and bottom hole 17. Two guide bars 6 are fixedly connected to the inner bottom wall of the carriage 4, and the two guide bars 6 are symmetrically arranged about the central axis of the carriage 4. Multiple toothed plates 7 are equidistantly arranged on both sides of the guide bars 6, and the toothed plates 7 are fixedly installed on the inner bottom wall of the carriage 4. A protective box assembly 8 is movably arranged on the surface of the guide bars 6, and a limiting unit 9 is connected to the bottom of the protective box assembly 8, and the limiting unit 9 is located between the two toothed plates 7.

[0051] The protective case assembly 8 includes a case body 81, and ventilation mesh 82 is provided on both sides of the lower part of the case body 81. Movable units 83 are installed around the bottom of the case body 81, and a groove is provided in the middle of the bottom end of the case body 81. A transmission unit 84 is provided inside the groove. A through hole 85 is provided at the bottom end of the case body 81, and the through hole 85 is located between two movable units 83. Specifically, concave holes for accommodating movable units 83 are provided around the bottom of the case body 81, and the movable unit 83 includes a first telescopic spring 831. The top end of the first telescopic spring 831 is fixedly connected to the inner top wall of the concave hole, and a sliding plate 832 is fixedly connected to the bottom end of the first telescopic spring 831. A universal wheel 833 is fixedly installed at the bottom end of the sliding plate 832. At the same time, a slide rail 834 for accommodating the sliding plate 832 is provided on the inner wall of the concave hole.

[0052] Furthermore, the transmission unit 84 includes a mounting rod 841, which is rotatably connected to the lower part of the housing 81. A gear cylinder 842 is fixedly connected to the outer wall of the mounting rod 841, and a toothed plate 7 is movably meshed with the bottom end of the gear cylinder 842. Through the meshing of the gear cylinder 842 with the toothed plate 7, the gear cylinder 842 achieves both transmission and guidance functions during the pushing of the protective housing. At the same time, by attaching the rotating belt 845 between the two guide strips 6, it is ensured that the gear cylinder 842 maintains a horizontal movement trajectory when moving on the surface of the guide strips 6, and the rigidity is reduced through flexible contact. Friction and noise are minimized to ensure that the protective box moves smoothly along the predetermined path within the carriage 4, avoiding deviation or jamming. At the same time, the rotating belt 845 can buffer slight vibrations, improving the stability and structural durability of animal transportation. A fixing plate 843 is fixedly installed inside the protruding teeth of the gear cylinder 842, and a rotating wheel 844 is rotatably connected above the fixing plate 843. The outer walls of the two rotating wheels 844 are meshed with the rotating belt 845, and the bottom end of the rotating belt 845 is movably and closely connected between the two guide bars 6. The bottom end of the rotating belt 845 and the bottom outer wall of the gear cylinder 842 are on the same horizontal plane.

[0053] Baffles 10 are installed on both sides of the housing 81 for limiting positioning. A protruding post is integrally formed at the bottom of each baffle 10, located above the through hole 85. A bottom hole 17 is provided at the bottom of the baffle 10 corresponding to the through hole 85. Limiting plates 909 are movably inserted into both the through hole 85 and the bottom hole 17. After the baffle 10 is installed, the bottom hole 17 at the bottom of the baffle 10 is aligned with the through hole 85 of the housing 81, allowing the limiting plate 909 to pass through both holes simultaneously during positioning, achieving a stable lock between the baffle 10 and the housing 81. Simultaneously, grooves are provided on both sides of the housing 81 corresponding to the protruding post, and transverse units are provided on both sides of the grooves. Specifically, each transverse unit includes a first return spring 86, which is fixedly installed inside the housing 81. The other side of the first return spring 86... A connecting plate 87 is fixedly installed at one end, and multiple insert rods 88 are fixedly installed on the outer wall of the connecting plate 87. A baffle 10 is inserted into the outer wall of the insert rod 88. Side holes 16 are opened on both sides of the protrusion on the lower part of the baffle 10, corresponding to the insert rods 88. When the first return spring 86 pushes the connecting plate 87 and the insert rods 88 outward, the insert rods 88 are automatically inserted into the side holes 16 on the side of the baffle 10, realizing the rapid lateral fixation of the baffle 10. This structure does not require additional tools or complicated operations. It can automatically lock when the baffle 10 is placed, which greatly improves the loading and unloading efficiency. At the same time, the cooperation between the insert rods 88 and the side holes 16 restricts the lateral displacement of the baffle 10 during transportation, preventing the baffle 10 from loosening due to vehicle bumps, ensuring that the experimental animals are in a stable space, and enhancing transportation safety and management convenience.

[0054] The two sides of the baffle 10 are detachably connected to the side walls of the box 81, and a ventilation window 11 is fitted into the top of the baffle 10. A handle 12 is provided below the ventilation window 11. The handle 12 is fixedly installed on the surface of the baffle 10. The detachable connection of the baffle 10 allows for flexible assembly and disassembly, enabling users to load and unload experimental animals inside the box 81. Simultaneously, the integrated design of the ventilation window 11 and the handle 12 ensures air circulation within the box 81, meeting the animals' breathing needs, while also facilitating manual operation. The handle 12, positioned below the ventilation window 11, facilitates gripping and applying force, making it easy to disassemble the baffle 10 and the box 81, and allowing users to easily open and close the box 81. A second... The second return spring 13 has a fixed insertion plate 14 at the other end. The insertion plate 14 is L-shaped. The inner side of the box 81 has a movable groove that can accommodate the insertion plate 14. The baffle 10 has multiple limiting holes 15 on both sides corresponding to the insertion plate 14. Under the elastic action of the second return spring 13, the second return spring 13 pushes the L-shaped insertion plate 14 outward, so that it automatically locks into the limiting holes 15 on the side of the baffle 10, forming a locking effect. This effectively prevents the baffle 10 from loosening due to damage caused by the experimental animals during transportation, further enhancing the integrity and stability of the box 81 structure and ensuring that the animals are in a safe and enclosed space during transportation.

[0055] The limiting unit 9 includes a fixed cylinder 901, which is fixedly installed on the inner bottom wall of the carriage 4. A second telescopic spring 902 is also fixedly connected to the inner bottom wall of the carriage 4, and the second telescopic spring 902 is located inside the fixed cylinder 901. A support plate 903 is fixedly installed on the top of the second telescopic spring 902, and a transmission plate 905 is rotatably connected to both sides of the support plate 903. A rotating rod 907 is fixedly connected to the middle of the transmission plate 905, and mounting plates 908 are rotatably connected to both ends of the rotating rod 907. The bottom end of the mounting plate 908 is fixedly connected to the inner bottom wall of the carriage 4. A limiting plate 909 is fixedly connected to the end of the transmission plate 905 away from the support plate 903, and a sliding groove 906 is provided on the side of the transmission plate 905 near the support plate 903. The interior of the sliding groove 906 is slidably connected to the support plate 903. The plate 903 is connected to a rotating shaft. A protrusion 904 is fixedly connected to the top of the plate 903, and the protrusion 904 is located between two toothed plates 7. The limiting unit 9 pushes the plate 903 upward through the second telescopic spring 902. The plate 903 slides in the groove 906 of the transmission plate 905 through the rotating shaft, causing the transmission plate 905 to rotate around the rotating rod 907, so that the limiting plate 909 is inserted upward into the through hole 85 at the bottom of the protective box, realizing the automatic locking of the protective box. At the same time, the protrusion 904 is set between the two toothed plates 7 to ensure that the plate 903 is accurately aligned. After the protective box is pushed into the carriage 4, the gear cylinder 842 squeezes the protrusion 904 to automatically lock it, ensuring the limiting effect between the box 81 and the carriage 4, while avoiding manual intervention, greatly improving the operating efficiency and transportation safety.

[0056] Working principle: First, the experimental animal is placed inside the box 81. Then, the baffle 10 is installed. The baffle 10 is initially positioned by inserting its bottom protrusion into the pre-set grooves on both sides of the box 81. During placement, the side hole 16 on the side of the baffle 10 automatically aligns with the insertion rod 88 inside the box 81. The first return spring 86 pushes the connecting plate 87, causing the insertion rod 88 to be inserted into the side hole 16, completing the initial lateral fixation of the baffle 10. At the same time, the second return spring 13 pushes the "L"-shaped insertion plate 14 outward and automatically locks into the limiting hole 15 on the side of the baffle 10, forming a double lock, effectively preventing the animal from colliding during transportation. This can cause the baffle 10 to loosen or shift. By integrating the ventilation window 11 and the handle 12 onto the baffle 10, air circulation inside the box 81 is ensured, and manual handling is also facilitated. After the animal is placed inside the box 81 and the baffle 10 is sealed to the box 81, the entire protective box assembly 8 is pushed in along the two pre-set guide strips 6 inside the carriage 4. This positions the universal wheels 833 at the bottom of the box 81 on the outside of the two guide strips 6. Furthermore, the rotating wheel 844 connected to the gear cylinder 842 via the fixing plate 843 drives the rotating belt 845, causing the bottom surface of the rotating belt 845 to adhere to the two guide strips. Between 6, further assists the housing 81 to maintain stable horizontal movement, reducing friction and noise. When the housing 81 is moved laterally on the surface of the toothed plate 7 to facilitate pushing into the designated position, the first telescopic spring 831 allows the universal wheel 833 to adapt to slight undulations on the surface of the guide bar 6 during the lateral movement of the housing 81. After the housing 81 is pushed to the designated position, the through hole 85 at the bottom of the housing 81 is exactly above the limiting unit 9. At this time, the movement of the end of the gear cylinder 842 will squeeze the protrusion 904 located between the two toothed plates 7, causing the protrusion 904 to drive the support plate 903 to press down, thereby... The rotating shafts on both sides of the pallet 903 slide within the grooves 906 of the transmission plate 905, forcing the transmission plate 905 to rotate around the rotating rod 907. This pushes the limiting plate 909 at its outer end upward, allowing the limiting plate 909 to pass through the through hole 85 of the box 81 and the aligned bottom hole 17 of the baffle 10 in sequence, thus achieving the fixing effect between the box 81 and the carriage 4. This allows the box 81 to be automatically fixed after being pushed into the designated position, effectively preventing displacement, overturning, or loosening of the protective box in any direction, even when the vehicle is moving, turning, or bumping. This completes the working principle of the experimental animal safety protection transport vehicle.

[0057] In summary, this invention achieves fully automatic mechanical locking of the protective box within the carriage 4 through the linkage structure of the limiting unit 9 and the protective box assembly 8. When the box 81 is pushed to the predetermined position along the guide bar 6, the gear cylinder 842 presses against the protrusion 904, thereby automatically inserting the limiting plate 909 upward into the through hole 85 of the box 81 and the bottom hole 17 of the baffle 10, completing the automatic locking of the box 81 and the carriage 4 in the vertical direction. This ensures that the box 81, the baffle 10, and the bottom plate of the carriage 4 are firmly integrated into a whole. With this design, the box can effectively resist displacement, overturning, and loosening in all directions when the vehicle is moving, turning, or bumping. This completely avoids the risk of collision of the box 81, animal injury, or escape caused by insecure fixing in traditional transportation, greatly enhancing the safety and reliability of the transportation process. It solves the technical problems of poor protective stability and inability to quickly load and unload existing experimental animal transport vehicles during transportation, thus improving transportation efficiency and management convenience.

[0058] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A laboratory animal safety transport vehicle, comprising a frame (1), wheels (2) rotatably connected to the underside of the frame (1), a front end (3) fixedly connected to one end of the frame (1), a cargo compartment (4) fixedly installed above the frame (1), and a door (5) hinged to the rear of the cargo compartment (4), characterized in that, Two guide strips (6) are fixedly connected to the inner bottom wall of the carriage (4), and the two guide strips (6) are symmetrically arranged about the central axis of the carriage (4). Multiple toothed plates (7) are equidistantly arranged on both sides of the guide strips (6), and the toothed plates (7) are fixedly installed on the inner bottom wall of the carriage (4). A protective box assembly (8) is movably arranged on the surface of the guide strips (6), and a limit unit (9) is connected to the bottom of the protective box assembly (8), and the limit unit (9) is located between the two toothed plates (7). The protective box assembly (8) includes a box body (81), and ventilation nets (82) are provided on both sides of the bottom of the box body (81). Moving units (83) are installed around the bottom of the box body (81), and a groove is provided in the middle of the bottom end of the box body (81). A transmission unit (84) is provided inside the groove. A through hole (85) is provided at the bottom end of the box body (81), and the through hole (85) is located between two moving units (83). The bottom of the box (81) is provided with concave holes around the perimeter to accommodate the movable unit (83). The movable unit (83) includes a first telescopic spring (831). The top end of the first telescopic spring (831) is fixedly connected to the inner top wall of the concave hole. The bottom end of the first telescopic spring (831) is fixedly connected to a sliding plate (832). The bottom end of the sliding plate (832) is fixedly installed with a universal wheel (833). The inner wall of the concave hole is provided with a slide rail (834) that can accommodate the sliding of the slide plate (832). The transmission unit (84) includes a mounting rod (841), which is rotatably connected to the bottom of the housing (81). A gear cylinder (842) is fixedly connected to the outer wall of the mounting rod (841), and a toothed plate (7) is movably meshed with the bottom end of the gear cylinder (842). The box (81) is equipped with baffles (10) on both sides, and the bottom end of the baffle (10) is integrally formed with a protruding post. The protruding post is located above the through hole (85). The box (81) has column grooves on both sides corresponding to the protruding post, and horizontal units are provided on both sides of the column grooves.

2. The laboratory animal safety transport vehicle according to claim 1, characterized in that, A fixing plate (843) is fixedly installed inside the protruding teeth of the gear cylinder (842), and a rotating wheel (844) is rotatably connected above the fixing plate (843). The outer walls of the two rotating wheels (844) are meshed with a rotating belt (845), and the bottom end of the rotating belt (845) is movably attached between two guide strips (6). The bottom end of the rotating belt (845) is on the same horizontal plane as the bottom outer wall of the gear cylinder (842).

3. The laboratory animal safety transport vehicle according to claim 1, characterized in that, The transverse unit includes a first return spring (86), and the first return spring (86) is fixedly installed inside the housing (81). A connecting plate (87) is fixedly installed at the other end of the first return spring (86), and a plurality of insert rods (88) are fixedly installed on the outer wall of the connecting plate (87), and a baffle (10) is inserted into the outer wall of the insert rods (88). The baffle (10) has side holes (16) on both sides of the protruding post below it, corresponding to the insertion rod (88).

4. The laboratory animal safety transport vehicle according to claim 3, characterized in that, The two sides of the baffle (10) are detachably connected to the side wall of the box (81), and a ventilation window (11) is fitted on the top of the baffle (10), and a handle (12) is provided below the ventilation window (11). The handle (12) is fixedly installed on the surface of the baffle (10).

5. The laboratory animal safety transport vehicle according to claim 4, characterized in that, The inner wall of the box (81) is fixedly installed with a second reset spring (13), and the other end of the second reset spring (13) is fixedly installed with a plug plate (14). The plug plate (14) is arranged in an "L" shape, and the inner side of the box (81) is provided with a moving groove that can accommodate the movement of the plug plate (14). The baffle (10) has multiple limiting holes (15) on both sides corresponding to the insert plate (14).

6. The laboratory animal safety transport vehicle according to claim 5, characterized in that, The limiting unit (9) includes a fixed cylinder (901), and the fixed cylinder (901) is fixedly installed on the inner bottom wall of the carriage (4). The inner bottom wall of the carriage (4) is also fixedly connected to a second telescopic spring (902), and the second telescopic spring (902) is located inside the fixed cylinder (901). The top of the second telescopic spring (902) is fixedly installed with a support plate (903), and the two sides of the support plate (903) are rotatably connected with a transmission plate (905). The middle part of the transmission plate (905) is fixedly connected with a rotating rod (907), and both ends of the rotating rod (907) are rotatably connected with a mounting plate (908). The bottom end of the mounting plate (908) is fixedly connected to the inner bottom wall of the carriage (4). A limiting plate (909) is fixedly connected to one end of the transmission plate (905) away from the support plate (903), and a groove (906) is provided on the side of the transmission plate (905) close to the support plate (903), and a rotating shaft connected to the support plate (903) is slidably connected inside the groove (906). The top of the tray (903) is fixedly connected to a protrusion (904), and the protrusion (904) is located between two toothed plates (7).

7. The laboratory animal safety transport vehicle according to claim 6, characterized in that, The bottom end of the baffle (10) is provided with a bottom hole (17) corresponding to the through hole (85), and a limit plate (909) is movably inserted into the interior of both the through hole (85) and the bottom hole (17).

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