A treadmill for animal experiments

Abstract

The utility model relates to the field of animal experiment instrument, concretely relates to a treadmill for animal experiment. The utility model provides a treadmill for animal experiment, including frame and controller, be equipped with running belt and first drive assembly on the frame, first drive assembly is used for driving running belt movement, one end of running belt is equipped with excitation mechanism, the excitation mechanism includes excitation part and second drive assembly, excitation part is located the top of running belt. The utility model places mouse to running belt, the controller controls first drive assembly drive running belt movement, mouse runs on the running belt, when inductive mechanism senses that mouse is located in the inductive area, represent mouse stop movement or run slowly, inductive mechanism sends signal to the controller, the controller controls second drive assembly and drives excitation part to remove, and excitation part contacts mouse, and the way of touching mouse excites mouse to continue to run, and the safety is higher.

Description

Technical Field

[0001] This utility model relates to the field of animal experimental equipment, specifically to a treadmill for animal experiments. Background Technology

[0002] In biomedical research, it is often necessary to conduct exercise-related experiments on animals, usually using mice as research subjects, to study the effects of exercise on their physiological functions, disease development, and other aspects.

[0003] Existing treadmills used for mouse experiments include a frame, a running belt, and an electric grid at the end of the running belt. The mouse is placed on the running belt, the running belt moves, and the mouse runs on the running belt. When the mouse slows down or stops running, the mouse gradually moves closer to the end of the running belt and comes into contact with the electric grid. The electric grid shocks the mouse, giving it an incentive to continue running.

[0004] However, the above-mentioned methods of electric shock stimulation can easily lead to excessive electric shocks that can cause injury or death in mice, resulting in low safety and a high accidental mortality rate, which in turn affects the accuracy and reliability of experimental results. Utility Model Content

[0005] The problem this invention aims to solve is: how to provide a treadmill for animal experiments that offers higher safety and more accurate and reliable experimental results.

[0006] This utility model provides a treadmill for animal experiments, including a frame and a controller, wherein the frame is provided with a running belt and a first drive assembly; The first drive component is used to drive the treadmill belt to move; One end of the running belt is provided with an excitation mechanism, which includes an excitation part and a second drive component. The excitation part is located above the running belt, and the second drive component is used to drive the excitation part to move along the length direction of the running belt. The excitation part is used to excite the mouse. The frame is provided with a sensing area, and the projection of the sensing area falls on the upper surface of the running belt; The frame is equipped with a sensing mechanism for monitoring whether a mouse enters the sensing area; The sensing mechanism, the first driving component, and the second driving component are all electrically connected to the controller.

[0007] According to one embodiment of the present invention, the sensing mechanism includes an infrared transmitter and an infrared receiver disposed opposite to each other; Along the width direction of the running belt, a plurality of baffles are provided above the running belt at intervals, and the baffles are connected to the frame through a first connector; The infrared transmitter and the infrared receiver are respectively provided on the side of each pair of adjacent baffles that are close to each other.

[0008] According to one embodiment of the present invention, the excitation part includes a push plate, the push plate being perpendicular to the bearing surface of the running belt; The second drive assembly includes a cylinder and a second connector, wherein the cylinder is connected to the push plate via the second connector.

[0009] According to one embodiment of the present invention, the excitation part further includes a plurality of protrusions, which are connected to the push plate.

[0010] According to one embodiment of the present invention, the frame includes a base plate, a first connecting block, and a lifting mechanism; The two ends of the running belt are respectively connected to a drive shaft and a driven shaft; The output end of the lifting mechanism is provided with a second connecting block, which is rotatably connected to the drive shaft. Both ends of the driven shaft are rotatably connected to the first connecting block, and the first connecting block is fixedly connected to the base plate.

[0011] According to one embodiment of the present invention, the frame further includes a strip frame, and both the drive shaft and the driven shaft are rotatably connected to the strip frame; The length direction of the strip frame is the same as the length direction of the running belt.

[0012] According to one embodiment of the present invention, the first connecting member includes a first upright plate and a second upright plate respectively connected to both ends of the strip frame, and both ends of the baffle are respectively connected to the first upright plate and the second upright plate.

[0013] According to one embodiment of the present invention, the first driving component includes a driving motor, a transmission shaft, and a transmission structure; The transmission structure is disposed within the strip frame; The transmission structure includes a double-groove pulley and a transmission belt; The output end of the drive motor is connected to the drive shaft; The drive shaft, the driven shaft, and the transmission shaft are all connected to the double-groove pulleys, and each pair of adjacent double-groove pulleys are connected by a transmission belt.

[0014] According to one embodiment of the present invention, a scraper for scraping off excrement adhering to the running belt is provided below the running belt, and the scraper is connected to the strip frame; A collection frame for collecting excrement is placed on the base plate, and the scraper is located directly above the collection frame.

[0015] According to one embodiment of the present invention, a pressure cap is hinged to the first upright plate, and the pressure cap overlaps the top of the baffle.

[0016] The beneficial effects of this utility model are: A mouse is placed on a treadmill belt. The controller controls the first drive component to move the treadmill belt. The mouse runs on the treadmill belt. When the sensing mechanism detects that the mouse is in the sensing area, it means that the mouse stops moving or slows down. The sensing mechanism sends a signal to the controller, which controls the second drive component to move the excitation unit. The excitation unit makes contact with the mouse, and the mouse is encouraged to continue running by touching it. This method is safer than the traditional method of excitation by electric shock through an electric grid. It is less likely to affect the mouse's body and nervous system, and the mice are less likely to die. This reduces the accidental mortality rate and improves the accuracy and reliability of the test results. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A first perspective view of a treadmill provided for an embodiment of this utility model; Figure 2 A second perspective view of the treadmill provided for an embodiment of this utility model; Figure 3 A front view of a treadmill provided in an embodiment of this utility model; Figure 4 A top view of a treadmill provided in an embodiment of this utility model; Figure 5 A perspective sectional view of a treadmill provided for an embodiment of this utility model.

[0019] Icons: 1. Treadmill belt; 2. First drive assembly; 201. Drive motor; 202. Drive shaft; 203. Double-groove pulley; 204. Drive belt; 3. Excitation unit; 301. Push plate; 302. Protrusion; 4. Second drive assembly; 401. Cylinder; 402. First connecting plate; 403. Second connecting plate; 5. Sensing mechanism; 501. Infrared transmitter; 502. Infrared receiver; 6. Base plate; 7. First connecting block; 8. Lifting mechanism; 9. Strip frame; 10. Drive shaft; 11. Driven shaft; 12. Second connecting block; 13. Baffle; 14. First upright plate; 15. Second upright plate; 16. Scraper; 17. Collection frame; 18. Pressure cover; 19. Rotating component. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] like Figures 1-5 As shown, one embodiment of the present invention provides a treadmill for animal experiments, including a frame and a controller, wherein a running belt 1 and a first drive assembly 2 are provided on the frame; The first drive component 2 is used to drive the treadmill belt 1 to move; One end of the treadmill belt 1 is provided with an excitation mechanism, which includes an excitation part 3 and a second drive component 4. The excitation part 3 is located above the treadmill belt 1, and the second drive component 4 is used to drive the excitation part 3 to move along the length of the treadmill belt 1. The excitation part 3 is used to excite the mouse. The frame is equipped with a sensing area, and the projection of the sensing area falls on the upper surface of the running belt 1; The frame is equipped with a sensing mechanism 5 for monitoring whether the mouse enters the sensing area; The sensing mechanism 5, the first driving component 2, and the second driving component 4 are all electrically connected to the controller.

[0022] In this embodiment, the treadmill belt 1 has a head end and an end end, and the direction from the head end to the end end of the treadmill belt 1 is the direction of movement of the treadmill belt 1. The mouse runs in the opposite direction to the direction of movement of the treadmill belt 1, and the excitation mechanism is located at the end of the treadmill belt 1.

[0023] Traditional electric shock stimulation of mice to run may have some uncertain effects on the mice's body and nerves, especially for experimental animals used to study neurological diseases, where electric stimulation may affect the accuracy of experimental results.

[0024] In this embodiment, a mouse is placed on a treadmill belt 1, and the controller controls the first drive component 2 to drive the treadmill belt 1 to move. The mouse runs on the treadmill belt 1. When the sensing mechanism 5 detects that the mouse has entered the sensing area, it means that the mouse has stopped moving or its running has slowed down. The sensing mechanism 5 sends a signal to the controller, and the controller controls the second drive component 4 to move the excitation part 3. The excitation part 3 comes into contact with the mouse and encourages the mouse to continue running by touching it. This method replaces the traditional excitation method of electric shock through an electric grid, which is safer and less likely to affect the mouse's body and nerves. The mouse is less likely to die, reducing the accidental mortality rate and thus improving the accuracy and reliability of the test results.

[0025] The controller can be rack-mounted and can also be a wireless controller.

[0026] In this embodiment, the treadmill also includes a timer. The timer, lifting mechanism 8, cylinder 401, and drive motor 201 are all electrically connected to the controller. The controller has a display screen and buttons. By pressing the buttons, the lifting mechanism 8 is moved to adjust the incline of the running belt 1; by controlling the rotation speed of the drive motor 201, the speed of the running belt 1 is adjusted. The timer can be used to set the exercise time. When the exercise time reaches the set duration, the controller controls the drive motor 201 to stop working. Pressing the buttons causes the controller to control the corresponding movements of each mechanism, which is existing technology and will not be described in detail. It should be noted that the treadmill also includes a speed regulator (not shown in the figure). The speed regulator is used to adjust the rotation speed of the drive motor 201. The treadmill can set a speed range (fastest and slowest speed) and an acceleration mode (e.g., linear acceleration, cyclic acceleration). Within the set speed range, it can accelerate first, then maintain a constant speed, and then decelerate, or perform gradient acceleration, etc. These are functions that are commonly found in current treadmills and will not be described in detail.

[0027] The controller also has a storage module that can record mouse movement data, such as movement time, movement speed, total number of push-rod stimulations, and initial stimulation time. The memory data can be directly exported, which is a function of existing treadmills used in animal experiments, and will not be described in detail here.

[0028] The surface of the running belt 1 has anti-slip texture, which can improve the friction of the running belt 1, reduce the occurrence of mice slipping and falling while running, and improve safety.

[0029] The sensing mechanism 5 includes an infrared transmitter 501 and an infrared receiver 502 arranged opposite to each other. Along the width direction of the running belt 1, a plurality of baffles 13 are arranged at intervals above the running belt 1, and each baffle 13 is connected to the frame through a first connector. An infrared transmitter 501 and an infrared receiver 502 are respectively provided on the side of each pair of adjacent baffles 13 that are close to each other.

[0030] Of course, in this embodiment, the sensing mechanism 5 can also take other forms. For example, the sensing mechanism 5 can also be a laser emitter and a laser receiver arranged opposite each other, and can also sense whether the mouse has entered the sensing area. Its purpose does not depart from the design concept of this utility model, therefore, it should fall within the protection scope of this utility model.

[0031] When two baffles 13 are provided and located on both sides of the running belt 1, there is only one running track. The infrared transmitter 501 and the infrared receiver 502 are respectively connected to the two baffles 13 on the sides that are close to each other. Of course, in this embodiment, the infrared transmitter 501 and the infrared receiver 502 can also be connected to the two strip frames 9 respectively. In this case, the bottom of the baffle 13 is higher than the infrared transmitter 501, so it does not block the infrared receiver 502 from receiving signals normally. Its purpose does not deviate from the design concept of this utility model, therefore, it should fall within the protection scope of this utility model. When multiple baffles 13 are installed, the treadmill belt 1 can be divided into multiple running lanes, such as... Figure 1 As shown, there are three baffles 13, and the running belt 1 divides the track into two lanes. At this time, there is a set of sensing mechanisms 5 between each two adjacent baffles 13, and there is an excitation part 3 between each two adjacent baffles 13. The second drive assembly 4 corresponds to the excitation part 3 one by one, and each second drive assembly 4 can drive an excitation part 3 to move independently.

[0032] The sensing area is a rectangular area, and the length of the sensing area is greater than the length of the mouse. The infrared transmitter 501 and the infrared receiver 502 are located at one edge of the sensing area, and the push plate 301 is located at the edge of the sensing area near the end of the running belt 1.

[0033] Initially, the mouse runs normally outside the sensing area. When the mouse becomes exhausted and slows down or stops moving, it enters the sensing area from the edge. When the mouse's body passes the edge of the sensing area, it blocks the infrared transmitter 501. The infrared receiver 502 does not receive a signal for the first time and sends a signal to the controller. After receiving the signal, the controller controls the second drive component 4 to move the excitation part 3 to touch the mouse, thereby encouraging the mouse to accelerate and run past the infrared transmitter 501 again to leave the sensing area. At this time, the infrared receiver 502 does not receive a signal again and sends a signal to the controller. The controller ignores the signal and does not control the second drive component 4 to move the excitation part 3. (It should be noted that the controller can control the second drive component 4 to move when it receives the signal from the infrared receiver 502 an odd number of times, and ignore the signal when it receives the signal from the infrared receiver 502 an even number of times. This is existing technology and will not be described in detail.) The mouse leaves the sensing area normally and moves towards the beginning of the running belt 1.

[0034] It should be noted that during the process of the second drive component 4 driving the excitation unit 3 to return after a certain distance, the excitation unit 3 does not pass between the infrared transmitter 501 and the infrared receiver 502, and will not block the infrared signal emitted by the infrared transmitter 501.

[0035] In another embodiment, initially, the distance between the exciter 3 and the infrared receiver 502 is less than the length of the mouse. When the mouse stops moving or moves slowly and is between the infrared transmitter 501 and the infrared receiver 502, the signal from the infrared transmitter 501 is blocked, preventing the infrared receiver 502 from receiving a signal. The infrared receiver 502 then sends a signal to the controller. When the duration for which the infrared receiver 502 does not receive a signal exceeds a set first threshold, the controller controls the second drive assembly 4 to move the exciter 3 to touch the mouse. In this embodiment, the treadmill also includes an alarm bell. When the duration for which the infrared receiver 502 does not receive a signal exceeds a set second threshold (which is greater than the first threshold), the controller controls the alarm bell to sound, and the second drive assembly 4 and the running belt 1 stop working. This embodiment does not depart from the design concept of this utility model and therefore should fall within the protection scope of this utility model.

[0036] Preferably, the baffle 13 can be made of a dark opaque material, such as a black acrylic sheet. The first connector includes a first upright plate 14 and a second upright plate 15 respectively connected to the two ends of the strip frame 9. The two ends of each baffle 13 are respectively connected to the first upright plate 14 and the second upright plate 15. Preferably, the two ends of the baffle 13 are fixedly connected to the first vertical plate 14 and the second vertical plate 15 respectively (e.g., by welding or screwing).

[0037] Optionally, the two ends of the baffle 13 are detachably connected to the first upright plate 14 and the second upright plate 15, respectively. Specifically, the height direction of the first upright plate 14 is the same as that of the second upright plate 15. Along the height direction of the first upright plate 14, multiple first slots and multiple second slots are respectively provided on the side of the first upright plate 14 and the second upright plate 15 that are close to each other. The length of the first slot and the length of the second slot are both less than the height of the first upright plate 14. The multiple first slots are arranged alternately along the width direction of the running belt 1, and the multiple second slots are arranged alternately along the width direction of the running belt 1. One end of the first slot penetrates through the top of the first upright plate 14, and one end of the second slot penetrates through the top of the second upright plate 15, so that both ends of the baffle 13 can be inserted into the first slot and the second slot.

[0038] It should be noted that there is a certain gap between the baffle 13 and the bearing surface of the running belt 1, which can prevent the baffle 13 from rubbing against the bearing surface of the running belt 1 and causing damage to the running belt 1. The length direction of the baffle 13 is the same as the length direction of the running belt 1.

[0039] According to one embodiment of the present invention, such as Figure 2 As shown, the excitation unit 3 includes a push plate 301, which is perpendicular to the bearing surface of the running belt 1. The push plate 301 is moved by the second drive assembly 4, so that the push plate 301 contacts the mouse and excites the mouse to run.

[0040] Furthermore, the excitation unit 3 also includes multiple protrusions 302 connected to the push plate 301. The second drive component 4 drives the push plate 301 to move, and then the protrusions 302 on the push plate 301 come into contact with the mouse, causing the mouse to be physically stimulated and move towards the beginning of the running belt 1. The protrusions 302 can be made of pyramids, short rods, cones, etc. The pyramid can be a polygonal pyramid such as a triangular pyramid or a square pyramid. When a pyramid or cone is used, the cross-sectional area of ​​the end of the pyramid near the push plate 301 is larger than the cross-sectional area of ​​the other end. Preferably, when a cone is used, the end face of the cone away from the push plate 301 is an arc surface, which makes it less likely to puncture the mouse.

[0041] The second drive assembly 4 includes a cylinder 401 and a second connector, wherein the cylinder 401 is connected to the push plate 301 via the second connector.

[0042] Preferably, the second connector includes a first connecting plate 402 and a second connecting plate 403; The fixed end of cylinder 401 is connected to the second upright plate 15, and the pushing end of cylinder 401 is connected to the first connecting plate 402. A second connecting plate 403 is connected to one side of the first connecting plate 402 by fasteners, and the push plate 301 is fixedly connected to the second connecting plate 403. By pushing with cylinder 401, the connected first connecting plate 402 and the second connecting plate 403 move synchronously. The second connecting plate 403 drives the push plate 301 to move, so that the multiple protrusions 302 on the push plate 301 come into contact with the mouse, stimulating the mouse to run.

[0043] The extension and retraction direction of cylinder 401 is parallel to the upper surface of running belt 1.

[0044] The fasteners include bolts and nuts. The first connecting plate 402 and the second connecting plate 403 are respectively provided with a first through hole and a second through hole. The bolt passes through the second through hole and the first through hole in sequence and is screwed into the nut, thereby fixing the second connecting plate 403 and the first connecting plate 402.

[0045] Of course, in this embodiment, the second drive component 4 can also be a linear module, which does not deviate from the design concept of this utility model, and therefore should fall within the protection scope of this utility model.

[0046] According to one embodiment of the present invention, the frame includes a base plate 6, a first connecting block 7, and a lifting mechanism 8; The two ends of the treadmill belt 1 are respectively connected to the drive shaft 10 and the driven shaft 11; The output end of the lifting mechanism 8 is provided with a second connecting block 12, preferably, as follows: Figure 1As shown, two lifting mechanisms 8 are symmetrically arranged. Each lifting mechanism 8 has a second connecting block 12 connected to its output end. The fixed end of each lifting mechanism 8 is rotatably connected to the base plate 6 via a rotating component 19. The second connecting block 12 is rotatably connected to the drive shaft 10 via a second bearing. Both ends of the driven shaft 11 are rotatably connected to first connecting blocks 7, which are rotatably connected to the first connecting blocks 7 via first bearings. The first connecting blocks 7 are fixedly connected to the base plate 6. The first and second bearings ensure smoother rotation of the drive shaft 10 and the driven shaft 11.

[0047] Preferably, the rotating component 19 includes two first support blocks fixed to the base plate 6, and a rotating shaft is connected between the two first support blocks. The bottom of the lifting mechanism 8 is connected to a second support block, which is rotatably connected to the rotating shaft. During the process of lifting the drive shaft 10, the lifting mechanism 8 rotates around the axis of the rotating shaft.

[0048] The axial direction of the drive shaft 10 and the axial direction of the driven shaft 11 are the same as the width direction of the running belt 1.

[0049] The lifting mechanism 8 drives the second connecting block 12 to move upward, making the active shaft 10 higher than the driven shaft 11, thereby changing the tilt angle of the running belt 1 relative to the ground. This allows for the testing of various data of mice running at different tilt angles. The lifting mechanism 8 can be an electric push rod or a pneumatic cylinder.

[0050] According to one embodiment of the present invention, the frame further includes a strip frame 9, the length direction of the strip frame 9 is the same as the length direction of the running belt 1, and the drive shaft 10 and the driven shaft 11 are rotatably connected to the strip frame 9.

[0051] Preferably, there are two strip frames 9, which are located on both sides of the running belt 1.

[0052] According to one embodiment of the present invention, such as Figure 4 As shown, the first drive assembly 2 includes a drive motor 201, a transmission shaft 202, and a transmission structure; The transmission structure corresponds one-to-one with the strip frame 9, and the transmission structure is located inside the strip frame 9; The transmission structure includes a double-grooved pulley 203 and a transmission belt 204; The fixed end of the drive motor 201 is connected to the strip frame 9 through an L-shaped plate, and the output end of the drive motor 201 is connected to the drive shaft 10 to drive the drive shaft 10 to rotate along its axis. Double-grooved pulleys 203 are connected to the drive shaft 10, driven shaft 11, and transmission shaft 202. Adjacent double-grooved pulleys 203 in each transmission structure are connected by a transmission belt 204. The connection method between the double-grooved pulleys 203 and the transmission belt 204 is existing technology and will not be described in detail.

[0053] The drive motor 201 drives the drive shaft 10 to rotate. The drive shaft 10 and its adjacent transmission shaft 202, each pair of adjacent transmission shafts 202, and the driven shaft 11 and its adjacent transmission shaft 202 are all connected by transmission belts 204, thereby causing the running belt 1 to move. The transmission efficiency is higher through the multiple transmission belts 204 and multiple transmission shafts 202. In addition, the multiple transmission shafts 202 can also provide support for the running belt 1.

[0054] During exercise, mice may excrete feces and other waste, which may adhere to the bearing surface of the treadmill belt 1. Therefore, a scraper 16 is provided below the treadmill belt 1 to scrape off the adhering waste. The scraper 16 is connected to the strip frame 9. Preferably, there is a gap between the scraper 16 and the treadmill belt 1 to prevent damage to the surface of the treadmill belt 1 without affecting the removal of waste. A collection box 17 for collecting waste is placed on the base plate 6, with the scraper 16 located directly above the collection box 17. The waste scraped off by the scraper 16 enters the collection box 17 directly for collection. Only the waste in the collection box 17 needs to be emptied periodically, without soiling other areas of the treadmill.

[0055] It should be noted that there are gaps between the push plate 301 and the second upright plate 15 and the upper surface of the running belt 1, allowing excrement to pass through without affecting the push plate 301's ability to stimulate the mice. The infrared emitter 501 and infrared receiver 502 are a certain distance from the bearing surface (upper surface) of the running belt 1, so that excrement will not interfere with the operation of the infrared emitter 501 and infrared receiver 502.

[0056] According to one embodiment of this utility model, a pressure cover 18 is hinged to the first upright plate 14, and the pressure cover 18 overlaps the top of the baffle 13. To prevent the mouse from jumping off the running belt 1 during running, the pressure cover 18 is hinged to the first upright plate 14, and overlaps the top of the baffle 13. It should be noted that the pressure cover 18 is only located in the front half of the running belt 1 and does not affect the movement of the excitation unit 3. Furthermore, since the mouse runs relatively fast when first placed on the running belt 1, it may be located at the beginning of the running belt 1. To prevent the mouse from probing into the gap between the running belt 1 and the first upright plate 14 and getting its head stuck and injured, a soft brush is provided at the bottom of the first upright plate 14 to prevent the mouse from getting stuck in the gap.

[0057] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0058] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0059] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A treadmill for animal experiments, characterized in that, It includes a frame and a controller, wherein the frame is provided with a running belt (1) and a first drive assembly (2). The first drive component (2) is used to drive the treadmill belt (1) to move; One end of the running belt (1) is provided with an excitation mechanism, which includes an excitation part (3) and a second drive component (4). The excitation part (3) is located above the running belt (1), and the second drive component (4) is used to drive the excitation part (3) to move along the length direction of the running belt (1). The excitation part (3) is used to excite the mouse. The frame is provided with a sensing area, and the projection of the sensing area falls on the upper surface of the running belt (1); The frame is equipped with a sensing mechanism (5) for monitoring whether the mouse enters the sensing area. The sensing mechanism (5), the first driving component (2), and the second driving component (4) are all electrically connected to the controller.

2. The treadmill for animal experiments according to claim 1, characterized in that, The sensing mechanism (5) includes an infrared transmitter (501) and an infrared receiver (502) arranged opposite to each other. Along the width direction of the running belt (1), a plurality of baffles (13) are arranged at intervals above the running belt (1), and the baffles (13) are connected to the frame through a first connector; Each pair of adjacent baffles (13) has an infrared transmitter (501) and an infrared receiver (502) respectively on the side closest to each other.

3. The treadmill for animal experiments according to claim 1, characterized in that, The excitation unit (3) includes a push plate (301) which is perpendicular to the bearing surface of the running belt (1); The second drive assembly (4) includes a cylinder (401) and a second connector, wherein the cylinder (401) is connected to the push plate (301) via the second connector.

4. The treadmill for animal experiments according to claim 3, characterized in that, The excitation part (3) also includes a plurality of protrusions (302), which are connected to the push plate (301).

5. The treadmill for animal experiments according to claim 2, characterized in that, The frame includes a base plate (6), a first connecting block (7), and a lifting mechanism (8); The two ends of the running belt (1) are respectively connected to the drive shaft (10) and the driven shaft (11). The output end of the lifting mechanism (8) is provided with a second connecting block (12), the second connecting block (12) is rotatably connected to the drive shaft (10), and the two ends of the driven shaft (11) are rotatably connected to the first connecting block (7), and the first connecting block (7) is fixedly connected to the base plate (6).

6. The treadmill for animal experiments according to claim 5, characterized in that, The frame also includes a strip frame (9), and the drive shaft (10) and the driven shaft (11) are rotatably connected to the strip frame (9); The length direction of the strip frame (9) is the same as the length direction of the running belt (1).

7. The treadmill for animal experiments according to claim 6, characterized in that, The first connector includes a first upright plate (14) and a second upright plate (15) respectively connected to both ends of the strip frame (9), and both ends of the baffle (13) are connected to the first upright plate (14) and the second upright plate (15) respectively.

8. A treadmill for animal experiments according to claim 6, characterized in that, The first drive assembly (2) includes a drive motor (201), a transmission shaft (202), and a transmission structure; The transmission structure is located within the strip frame (9); The transmission structure includes a double-groove pulley (203) and a transmission belt (204). The output end of the drive motor (201) is connected to the drive shaft (10); The drive shaft (10), the driven shaft (11) and the transmission shaft (202) are all connected to the double groove pulleys (203), and each pair of adjacent double groove pulleys (203) are connected by a transmission belt (204).

9. A treadmill for animal experiments according to claim 6, characterized in that, The treadmill belt (1) is provided with a scraper (16) for scraping off the excrement adhering to the treadmill belt (1) below it, and the scraper (16) is connected to the strip frame (9). A collection frame (17) for collecting excrement is placed on the base plate (6), and the scraper (16) is located directly above the collection frame (17).

10. A treadmill for animal experiments according to claim 7, characterized in that, A pressure cap (18) is hinged to the first upright plate (14), and the pressure cap (18) overlaps the top of the baffle (13).

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