Bicycle-style large-capacity rat treadmill

Abstract

The present invention discloses a bicycle-type large-capacity rat treadmill, comprising: a base, at least two treadmills arranged on the base, a suspension device arranged on the base for suspending and fixing rats, and a driving device arranged inside the base for providing power to the treadmill; each treadmill is provided with a pedal leveling device, and the treadmill comprises a mounting seat fixedly connected to the base, a rotating shaft rotatably arranged on the mounting seat, two cranks drivingly connected to the two ends of the rotating shaft, and two pedals rotatably connected to the ends of the two cranks. The present invention provides a bicycle-type large-capacity rat treadmill, which adopts a new structural form, and has a large treadmill capacity, can allow multiple rats to be tested at the same time, and only needs one motor for driving, and has a simple structure and is easy to control; the present invention sets a pedal leveling device, so that the pedal itself can be kept roughly horizontal during exercise to prevent rats from spraining their feet.

Description

Technical Field

[0001] The invention relates to the field of animal experimental equipment, in particular to a bicycle-type large-capacity rat treadmill. Background Art

[0002] The animal experiment treadmill is mainly used for running training of small animals such as white mice. It can replace traditional swimming training and make the training intensity index more accurate. It is one of the necessary means for experiments such as physical fitness, endurance, sports injuries, nutrition, drugs, physiology and pathology. By using the animal experiment treadmill to train rats, we can also study the rehabilitation effect of exercise training on some diseases.

[0003] Currently, rat treadmills are generally treadmill-type treadmills, such as patent CN201220466658.8 which discloses a large-capacity rat treadmill that is easy to operate and clean. There is a lack of other forms of rat treadmills for testing. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a bicycle-type large-capacity rat treadmill in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a bicycle-type large-capacity rat treadmill, comprising: a base, at least two treadmills arranged on the base, a suspension device arranged on the base for suspending and fixing rats, and a driving device arranged inside the base for providing power to the treadmills;

[0006] Each of the treadmills is provided with a pedal leveling device, and the treadmill comprises a mounting seat fixedly connected to the base, a rotating shaft rotatably arranged on the mounting seat, two cranks drivingly connected to both ends of the rotating shaft, and two pedals rotatably connected to the ends of the two cranks;

[0007] The pedal leveling device includes a perforated plate fixedly connected to the base and a rod-shaped elastic member, a first end of which is fixedly connected to the foot pedal and a second end of which passes through an opening on the perforated plate, wherein the diameter of the opening is larger than the diameter of the rod-shaped elastic member. The pedal leveling device is used to allow the crank to rotate and to limit the angle of rotation of the foot pedal around the crank to a certain range through the elastic force provided by the rod-shaped elastic member.

[0008] Preferably, the rod-shaped elastic member is a spring steel wire.

[0009] Preferably, a feces collecting track is obliquely arranged on the mounting seat, and the lower ends of the feces collecting tracks on all the mounting seats converge into a feces collecting box.

[0010] Preferably, the rotating shaft has a first driving plane, the first end of the crank is provided with an adjustable driving slot, and the adjustable driving slot has a second driving plane matching the first driving plane;

[0011] The length of the second driving plane is greater than that of the first driving plane, and at least two arc grooves that can cooperate with the cylindrical surface of the rotating shaft are arranged on the opposite side of the second driving plane, and at least two driving holes that can be inserted into the rotating shaft to realize the driving connection between the rotating shaft and the crank are formed between at least two of the arc grooves and the second driving plane.

[0012] Preferably, the driving device is arranged inside the base, and the driving device includes a motor, a driving gear drivingly connected to the output shaft of the motor, a driven gear meshing with the driving gear, a driving shaft coaxially connected to the driven gear, a plurality of driving pulleys fixed to the driving shaft corresponding to the number of the treadmills, a driven pulley fixed to the rotating shaft, and a synchronous belt connected between the driving pulley and the driven pulley.

[0013] Preferably, the suspension device includes at least two front vertical rods fixedly connected to the base, a front cross bar slidably arranged on the front vertical rods, at least two rear vertical rods fixedly connected to the base, a rear cross bar slidably arranged on the rear vertical rods, a connecting sleeve rod slidably arranged on the rear cross bar, and a hanging rod whose first end is detachably connected to the connecting sleeve rod and whose second end is connected to the front cross bar.

[0014] Preferably, the device further comprises a cloth bag connected to the hanging device for fixing the rat, and the cloth bag is arranged on the hanging rod.

[0015] Preferably, it further comprises a dynamometer and a cloth bag connected to the dynamometer for fixing the rat; the dynamometer is connected to the hanging rod, and the cloth bag is connected to the lower end of the dynamometer.

[0016] Preferably, the front cross bar and the front vertical bar, the rear cross bar and the rear vertical bar, and the connecting sleeve bar and the rear cross bar are all connected by quick-release connectors, and the quick-release connectors include a connecting block, a first connecting rod hole opened on the connecting block, a first locking screw arranged perpendicular to the first connecting rod hole and capable of extending into the first connecting rod hole, a second connecting rod hole opened on the connecting block and perpendicular to the first connecting rod hole, and a second locking screw arranged perpendicular to the second connecting rod hole and capable of extending into the second connecting rod hole.

[0017] Preferably, a display screen is further provided on the side of the base, and a boss is further provided on the front of the base.

[0018] The beneficial effects of the present invention are as follows: the present invention provides a bicycle-type large-capacity rat treadmill, adopts a new structural form, and has a large treadmill capacity, can allow multiple rats to be tested at the same time, and only requires one motor for driving, has a simple structure, and is easy to control;

[0019] The present invention provides a foot pedal leveling device, so that the foot pedal itself can be kept roughly horizontal during the movement process, thereby preventing the rat from spraining its ankle.

[0020] The suspension mode of the present invention is changeable and can be used according to the needs, and the weight of the rat can be measured at the same time in one mode;

[0021] The invention is easy to clean and can collect the excrement of rats during exercise, making it easy to clean the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a bicycle-type large-capacity rat treadmill of the present invention;

[0023] Figure 2 It is a schematic structural diagram of the bicycle-type large-capacity rat treadmill of the present invention after removing some components;

[0024] Figure 3 It is a structural schematic diagram of the driving device of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the matching of the rotating shaft and the crank of the present invention;

[0026] Figure 5 It is a schematic diagram of the exploded structure of the rotating shaft and the crank of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the connection between the hanging rod and the rear cross bar of the present invention;

[0028] Figure 7 It is a schematic diagram of the exploded structure of the hanging rod and the rear cross bar of the present invention;

[0029] Figure 8 A schematic diagram of a hanging method of a cloth bag according to an embodiment of the present invention;

[0030] Fig. 9 A schematic diagram of another hanging method of a cloth bag according to an embodiment of the present invention;

[0031] Fig.10 The figure is a schematic diagram of fixing a rat tail according to an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1—base; 10—boss;

[0034] 2—treadmill; 20—mounting seat; 21—rotating shaft; 22—crank; 23—pedal; 24—feces collection track; 25—feces collection box; 210—first driving plane; 220—adjustable driving slot; 221—second driving plane; 222—arc-shaped slot; 223—driving hole; 224—first end of the crank; 225—second end of the crank;

[0035] 3—suspension device; 30—front vertical rod; 31—front cross rod; 32—rear vertical rod; 33—rear cross rod; 34—connecting sleeve rod; 35—hanging rod; 350—first end of the hanging rod; 351—second end of the hanging rod;

[0036] 4—driving device; 40—motor; 41—driving gear; 42—driven gear; 43—driving shaft; 44—driving pulley; 45—driven pulley; 46—synchronous belt;

[0037] 5—foot-pedal leveling device; 50—perforated plate; 51—opening; 52—rod-shaped elastic member;

[0038] 6—cloth bag; 7—tensile force gauge;

[0039] 8—quick-release connector 8; 80—connecting block; 81—first connecting rod hole; 82—first locking screw; 83—second connecting rod hole; 84—second locking screw;

[0040] 9—Rat tail. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with embodiments so that those skilled in the art can implement the invention with reference to the description.

[0042] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0043] like Figure 1-10 As shown, a bicycle-type large-capacity rat treadmill of this embodiment comprises: a base 1, at least two treadmills 2 arranged on the base 1, a suspension device 3 arranged on the base 1 for suspending and fixing rats, and a driving device 4 arranged inside the base 1 for providing power to the treadmills 2;

[0044] Each treadmill 2 is provided with a pedal leveling device 5, and the treadmill 2 includes a mounting seat 20 fixedly connected to the base 1, a rotating shaft 21 rotatably arranged on the mounting seat 20, two cranks 22 drivingly connected to both ends of the rotating shaft 21, and two pedals 23 rotatably connected to the ends of the two cranks 22; the power provided by the driving device 4 can drive the cranks 22 and the pedals 23 to rotate. A boss 10 is also arranged at the front of the base 1.

[0045] In this embodiment, four treadmills 2 are included, which can allow four rats to be trained at the same time. When using the device for training, the soles of the two hind limbs of the rat are fixed to the foot pedal 23 with adhesive tape, the rat trunk is suspended on the cloth bag 6 to keep it relatively fixed, the cloth bag 6 is connected to the suspension device 3, the two front limbs of the rat can be placed on the boss 10, and the rat tail 9 is fixed to the connecting sleeve rod 34 by adhesive tape or binding; the power provided by the driving device 4 drives the crank 22 and the foot pedal 23 to rotate, thereby forcing the rat to move.

[0046] In this embodiment, the pedal leveling device 5 includes a perforated plate 50 fixedly connected to the base 1 and a rod-shaped elastic member 52 whose first end is fixedly connected to the pedal 23 and whose second end passes through an opening 51 on the perforated plate 50, wherein the diameter of the opening 51 is larger than the diameter of the rod-shaped elastic member 52. The pedal leveling device 5 is used to allow the crank 22 to rotate and limit the angle of rotation of the pedal 23 around the crank 22 to a certain range through the elastic force provided by the rod-shaped elastic member 52. In a further preferred embodiment, the rod-shaped elastic member 52 is a spring steel wire.

[0047] The four foot-leveling devices 5 on the four treadmills 2 share a hole plate 50, and the hole plate 50 is provided with eight openings 51 for the second ends of the eight spring steel wires to be inserted. Since the first end of the spring steel wire is fixedly connected to the foot pedal 23, and the second end is movably inserted into the opening 51, and the spring steel wire is elastic, the foot pedal 23 can smoothly rotate around the rotating shaft 21 together with the crank 22. Under the restriction of the spring steel wire, the foot pedal 23 can only rotate around the crank 22 in a small range, so that the foot pedal 23 is basically kept horizontal during the process of rotating around the rotating shaft 21 together with the crank 22, thereby preventing the rat from spraining its ankle due to the excessive rotation angle of the foot pedal 23 itself during the movement of the rat.

[0048] Among them, a feces collection track 24 is obliquely arranged on the mounting seat 20, and the lower ends of the feces collection tracks 24 on all the mounting seats 20 are gathered into a feces collection box 25 for collecting the excrement of the rats in training, so as to facilitate the cleaning of the device.

[0049] Reference Figure 4-5 In a preferred embodiment, the rotating shaft 21 has a first driving plane 210, and the first end 224 of the crank is provided with an adjustable driving groove 220, and the adjustable driving groove 220 has a second driving plane 221 that cooperates with the first driving plane 210; the length of the second driving plane 221 is greater than the first driving plane 210, and at least two arc grooves 222 that can cooperate with the cylindrical surface of the rotating shaft 21 are arranged on the opposite side of the second driving plane 221, and at least two driving holes 223 that can be inserted into the rotating shaft 21 to realize the driving connection between the rotating shaft 21 and the crank 22 are formed between the at least two arc grooves 222 and the second driving plane 221 to realize the driving connection between the rotating shaft 21 and the crank 22.

[0050] After the rotating shaft 21 is inserted into the driving hole 223, the first driving plane 210 contacts the second driving plane 221, so that the rotating shaft 21 cannot rotate relative to the driving hole 223, so that the crank 22 can be driven to rotate by the rotating shaft 21. By selecting the rotating shaft 21 to be inserted into the corresponding driving hole 223, the distance between the foot pedal 23 and the rotating shaft 21 can be adjusted, so that the height of the foot pedal 23 can be adjusted, so as to adapt to the use of rats of different sizes.

[0051] Reference Figure 3 In a preferred embodiment, the driving device 4 is arranged inside the base 1, and the driving device 4 includes a motor 40, a driving gear 41 drivingly connected to the output shaft of the motor 40, a driven gear 42 meshing with the driving gear 41, a driving shaft 43 coaxially connected to the driven gear 42, a plurality of driving pulleys 44 fixed to the driving shaft 43 corresponding to the number of the treadmill 2, a driven pulley 45 fixed to the rotating shaft 21, and a synchronous belt 46 connected between the driving pulley 44 and the driven pulley 45.

[0052] There are four active pulleys 44 and four driven pulleys 45, which provide power for the four treadmills 2. The motor 40 drives the driven gear 42 to rotate through the active gear 41, thereby driving the drive shaft 43 and the four active pulleys 44 on the drive shaft 43 to rotate synchronously, and then drives the four driven pulleys 45 to rotate synchronously through the synchronous belt 46, thereby driving the rotating shafts 21 of the four turntables to rotate synchronously, so that the foot pedals 23 of the four treadmills 2 have the same rotation speed. The use of the synchronous belt 46 transmission can maintain the stability of the transmission and prevent slipping. In a further preferred embodiment, a display screen (not shown in the figure) is also provided on the side of the base 1, and the display screen is used to display the rotation speed of the foot pedal 23. It should be understood that the rotation speed of the foot pedal 23 is adjusted by the motor 40. The rotation speed of the foot pedal 23 can be obtained by conventional means through the rotation speed of the motor 40 and displayed on the display screen.

[0053] In one embodiment, four foot pads are provided at the bottom of the base 1 to isolate the bottom of the base 1 from water on the ground during cleaning and prevent water from seeping into the base 1 .

[0054] Reference Figure 1 In a preferred embodiment, the suspension device 3 includes at least two front vertical rods 30 fixed to the base 1, a front cross bar 31 slidably arranged on the front vertical rods 30, at least two rear vertical rods 32 fixed to the base 1, a rear cross bar 33 slidably arranged on the rear vertical rods 32, a connecting sleeve rod 34 slidably arranged on the rear cross bar 33, and a hanging rod 35 whose first end is detachably connected to the connecting sleeve rod 34 and whose second end is connected to the front cross bar 31. The suspension device 3 is connected to a cloth bag 6 for fixing rats.

[0055] In this embodiment, the hanging rod 35 is detachably connected to the connecting sleeve rod 34, and the front crossbar 31 and the rear crossbar 33 can slide up and down, which can facilitate height adjustment and change the hanging method of the rat. At least the following two solutions are included.

[0056] Option 1:

[0057] Reference Figure 8 The first end 350 of the hanging rod is connected to the connecting sleeve rod 34, the second end 351 of the hanging rod is placed on the front cross bar 31, the cloth bag 6 is set on the hanging rod 35, and the rat torso is put in the cloth bag 6. The hanging height of the rat can be adjusted by adjusting the upper and lower positions of the front cross bar 31 and the rear cross bar 33, and the position of the rat along the rear cross bar 33 can be adjusted by adjusting the connection position of the connecting sleeve rod 34 on the rear cross bar 33.

[0058] Option 2:

[0059] Reference Fig. 9 In this embodiment, the dynamometer 7 can also be connected, the hanging rod 35 is removed from the connecting sleeve rod 34, the front cross bar 31 is raised, the dynamometer 7 is connected to the front cross bar 31, the cloth bag 6 is connected to the lower end of the dynamometer 7, and the rat trunk is put in the cloth bag 6, so that the weight of the rat can be measured at the same time.

[0060] Reference Fig.10 , which is a schematic diagram of fixing the rat tail 9. When in use, the rat tail 9 is fixed on the connecting sleeve rod 34 to prevent the rat tail from being entangled with the steel wire below and affecting the operation of the mechanism.

[0061] In a preferred embodiment, the front cross bar 31 and the front vertical bar 30, the rear cross bar 33 and the rear vertical bar 32, and the connecting sleeve rod 34 and the rear cross bar 33 are all connected by a quick-release connector 8 to achieve the above-mentioned slidable connection function. Specifically, the quick-release connector 8 includes a connecting block 80, a first connecting rod hole 81 provided on the connecting block 80, a first locking screw 82 arranged perpendicular to the first connecting rod hole 81 and capable of extending into the first connecting rod hole 81, a second connecting rod hole 83 provided on the connecting block 80 and perpendicular to the first connecting rod hole 81, and a second locking screw 84 arranged perpendicular to the second connecting rod hole 83 and capable of extending into the second connecting rod hole 83.

[0062] Reference Figure 6-7 , take the connection between the rear cross bar 33 and the connecting sleeve rod 34 as an example: loosen the first locking screw 82, adjust the front and rear position of the connecting sleeve rod 34 in the first connecting rod hole 81, and then tighten it; loosen the second locking screw 84, the connecting sleeve rod 34 and the quick-release connector 8 can slide on the rear cross bar 33, and tighten it after adjustment.

[0063] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to specific details.

Claims

1. A bicycle-type large-capacity rat treadmill, characterized in that: include: A base, at least two treadmills arranged on the base, a suspension device arranged on the base for suspending and fixing rats, and a driving device arranged inside the base for providing power to the treadmills; Each of the treadmills is provided with a pedal leveling device, and the treadmill comprises a mounting seat fixedly connected to the base, a rotating shaft rotatably arranged on the mounting seat, two cranks drivingly connected to both ends of the rotating shaft, and two pedals rotatably connected to the ends of the two cranks; The pedal leveling device comprises a perforated plate fixedly connected to the base and a rod-shaped elastic member having a first end fixedly connected to the pedal and a second end passing through an opening on the perforated plate, wherein the diameter of the opening is larger than the diameter of the rod-shaped elastic member, and the pedal leveling device is used to allow the crank to rotate and limit the angle of rotation of the pedal around the crank to a certain range through the elastic force provided by the rod-shaped elastic member; The rotating shaft has a first driving plane, the first end of the crank is provided with an adjustable driving slot, and the adjustable driving slot has a second driving plane matched with the first driving plane; The length of the second driving plane is greater than that of the first driving plane, and at least two arc-shaped grooves capable of cooperating with the cylindrical surface of the rotating shaft are arranged on the opposite side of the second driving plane, and at least two driving holes capable of cooperating with the rotating shaft to insert therein to realize the driving connection between the rotating shaft and the crank are formed between the at least two arc-shaped grooves and the second driving plane; The driving device is arranged inside the base, and the driving device includes a motor, a driving gear drivingly connected to the output shaft of the motor, a driven gear meshing with the driving gear, a driving shaft coaxially connected to the driven gear, a plurality of driving pulleys fixed to the driving shaft corresponding to the number of the treadmills, a driven pulley fixed to the rotating shaft, and a synchronous belt connected between the driving pulley and the driven pulley; The suspension device comprises at least two front vertical rods fixedly connected to the base, a front cross rod slidably arranged on the front vertical rods, at least two rear vertical rods fixedly connected to the base, a rear cross rod slidably arranged on the rear vertical rods, a connecting sleeve rod slidably arranged on the rear cross rods, and a hanging rod with a first end detachably connected to the connecting sleeve rod and a second end connected to the front cross rod; The rod-shaped elastic member is a spring steel wire.

2. The bicycle-type large-capacity rat treadmill according to claim 1, characterized in that: A feces collecting track is obliquely arranged on the mounting seat, and the lower ends of the feces collecting tracks on all the mounting seats are gathered into a feces collecting box.

3. The bicycle-type large-capacity rat treadmill according to claim 1, characterized in that: It also includes a cloth bag connected to the hanging device for fixing the rat, and the cloth bag is arranged on the hanging rod.

4. The bicycle-type large-capacity rat treadmill according to claim 1, characterized in that: It also includes a dynamometer and a cloth bag connected to the dynamometer and used for fixing rats; the dynamometer is connected to the hanging rod, and the cloth bag is connected to the lower end of the dynamometer.

5. The bicycle-type large-capacity rat treadmill according to claim 3 or 4, characterized in that: The front cross bar and the front vertical bar, the rear cross bar and the rear vertical bar, and the connecting sleeve bar and the rear cross bar are all connected by a quick-release connector, and the quick-release connector includes a connecting block, a first connecting rod hole opened on the connecting block, a first locking screw arranged perpendicular to the first connecting rod hole and capable of extending into the first connecting rod hole, a second connecting rod hole opened on the connecting block and perpendicular to the first connecting rod hole, and a second locking screw arranged perpendicular to the second connecting rod hole and capable of extending into the second connecting rod hole.

6. The bicycle-type large-capacity rat treadmill according to claim 3 or 4, characterized in that: A display screen is also arranged on the side of the base, and a boss is also arranged on the front of the base.

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