A jumping mechanism emulating the legs of a frog

Abstract

The present application relates to the technical field of water-air cross medium motion robots, and more particularly to a jumping mechanism of a bionic frog leg, which comprises a water breaking assembly, a thigh rod, an elastic potential energy storage assembly, a calf rod, a connector and a water treading assembly, one end of each of two thigh rods is hingedly connected to the bottom of the water breaking assembly, one end of each of two calf rods is hingedly connected to the other end of each of two thigh rods through a first cylindrical pin, the elastic potential energy storage assembly is installed between the two first cylindrical pins, the other end of each of two calf rods is hingedly connected to the connector, the water treading assembly comprises two flat flippers, one end of each of two flippers is hingedly connected to the connector, and the other end of each of two calf rods is drivingly connected to one end of each of two flippers. The jumping mechanism has small volume, simple structure and small resistance when jumping in water medium, and is suitable for water-air cross medium jumping.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of water-air cross medium motion robots, and more particularly to a jumping mechanism of a bionic frog leg. BACKGROUND

[0002] Bionics is a comprehensive edge science, which can achieve the improvement or innovation of the original technology in the field of bionic robots through observation, bionic mapping, motion structure, theoretical analysis, simulation and other ways. From the perspective of bionics, kinematics and dynamics, frogs are natural "jumping experts" in water, with excellent jumping ability. Through the contraction and relaxation of leg muscles and the coordination of fin-shaped flippers, a huge propulsive force is generated to push the water, enabling the frog to jump from the water surface to the air. This movement mode can achieve high energy utilization, thus providing a good research idea for the study of water-air cross medium jumping robots. At present, domestic and foreign researchers have been studying bionic frog jumping robots for many years and have formed certain results. However, most bionic frog jumping robots are usually limited to jumping behavior in a single medium, and most of them cannot jump across water-air medium.

[0003] The prior art discloses a frog-like jumping robot, a trunk mounting plate is provided with front and rear limb driving mechanisms, and the front and rear limb driving mechanisms are respectively connected with front and rear limb executing mechanisms; the front limb driving mechanism and the rear limb driving mechanism respectively include an input shaft, a second gear, a one-way bearing, an incomplete gear and a ratchet pawl are arranged on the input shaft, the second gear is driven to a second output shaft through a gear transmission, and the incomplete gear is driven to a first output shaft through a gear transmission; second reels are arranged at both ends of the first output shaft, ropes are wound on the second reels, and output gears are arranged at both ends of the second output shaft. On the one hand, the rear limb motor drives the reel to rotate through gear transmission, and the contraction and expansion store the energy of the spring; on the other hand, the front and rear limb motors adjust the joint angle of the front and rear limb executing devices through gear transmission to adjust the take-off angle; after the incomplete gear in the rear limb driving mechanism is disengaged, the spring energy is released, the robot takes off, the elbow joint and shoulder joint angles of the robot are adjusted by the front limb motor in the air, the robot lands stably, and the rear limb motor rotates to store energy for the next jump. However, in this scheme, the motor drives the reel through the gear transmission rod to store the energy of the spring for jumping, the robot has a large volume, the structure design is redundant, the jumping environment is mostly land jumping, and the resistance is large when jumping in the water medium, so it is not suitable for water-air cross medium jumping. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art and provide a jumping mechanism of a bionic frog leg, which is small in size, simple in structure and suitable for water-air cross medium jumping.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is:

[0006] A biomimetic frog-like leg jumping mechanism is provided, comprising a water-breaking component, thigh rods, an elastic potential energy storage component, lower leg rods, a connector, and a treading water component. One end of each of the two thigh rods is hinged to the bottom of the water-breaking component, and one end of each of the two lower leg rods is hinged to the other end of each of the two thigh rods via a first cylindrical pin. The elastic potential energy storage component is installed between the two first cylindrical pins. The other ends of each of the two lower leg rods are hinged to the connector. The treading water component includes two flat fins, one end of each of the two fins is hinged to the connector, and the other ends of the two lower leg rods are drively connected to one end of each of the two fins.

[0007] The biomimetic frog-like leg jumping mechanism of this invention, in use, first causes the thigh rod and the water-breaking component to rotate relative to each other, thereby causing the lower leg rod, which is hinged to the thigh rod, to rotate. At this time, the included angle between the thigh rod and the lower leg rod decreases, and the distance between the two first cylindrical pins gradually increases. The elastic potential energy storage component stores elastic potential energy. Simultaneously, the lower leg rod drives the flippers to rotate, increasing the included angle between the two flippers. Fixing the thigh rod and the lower leg rod retains the stored elastic potential energy. The jumping mechanism is then placed in water, and the connection between the thigh rod and the lower leg rod is released. The lower leg rod is fixed, and the elastic potential energy storage component releases elastic potential energy, converting it into mechanical energy. This causes the thigh rod, lower leg rod, and flippers to rotate, simulating the contraction and relaxation of the muscles in a frog's leg. The flippers simulate the process of a frog slapping the water when jumping. The flat flippers step on the water, generating a force that is converted into the driving force for the jumping mechanism to leap out of the water. During the jump, the jumping mechanism gradually changes from a flat shape to a slender shape, reducing water resistance and making the jumping behavior in the water smoother and more natural. The jumping mechanism of this invention is small in size, simple in structure, and has low resistance when jumping in water, making it suitable for water-to-air cross-medium jumping.

[0008] Furthermore, the water-breaking assembly includes a water-breaking head and a fixed bracket, the water-breaking head being located at the top of the fixed bracket, and one end of each of the two thigh rods being hinged to the fixed bracket via a second cylindrical pin.

[0009] Furthermore, the water-breaking head is streamlined, and the outer diameter of the water-breaking head gradually decreases from the end closer to the fixed support to the end farther away from the fixed support.

[0010] Furthermore, it also includes a first transmission assembly, which includes a first gear and a first bearing. The two first gears are respectively fixed to one end of the two thigh rods. The two first gears are respectively connected to the second cylindrical pin through the first bearing, and the two first gears are meshed.

[0011] Further, a second transmission assembly is further included, the second transmission assembly includes a second gear and a third gear, two second gears are respectively fixed on one end of two shank rods, two second gears are respectively hinged with the connector through a third cylindrical pin, two second gears are engaged, two third gears are respectively fixed on one end of two flippers, two third gears are respectively hinged with the connector through a fourth cylindrical pin, two second gears are respectively engaged with two third gears.

[0012] Further, the first gear, the second gear and the third gear are consistent in structure.

[0013] Further, the elastic potential energy storage assembly includes a rubber belt and a fixed device, two ends of the rubber belt are respectively fixedly connected to the fixed device, and the fixed device is sleeved on the first cylindrical pin.

[0014] Further, a friction buckle is further included, the friction buckle is in a "C" shape, and inner sides of two ends of the friction buckle are respectively clamped with the thigh rod and the shank rod.

[0015] Further, an experimental release platform is further included, the experimental release platform includes a water tank, a jumping launching platform, a traction rope reverser and a traction rope, the jumping launching platform is installed on two sides of the water tank, the traction rope reverser is installed on the jumping launching platform, one end of the traction rope is connected to the traction rope reverser, and the other end of the traction rope is connected to the friction buckle.

[0016] Further, the jumping launching platform includes an adjustable support, a presser and a screw, the adjustable support is in a "U" shape, the presser is located between two sides of the adjustable support, the screw is threadedly connected to one side of the adjustable support, the screw is connected with the presser, and the presser and one side of the adjustable support clamp the side wall of the water tank.

[0017] The jumping mechanism of the bionic frog leg part of the embodiment of the present application has the advantages that, compared with the background art, the jumping mechanism has the beneficial effects that:

[0018] The jumping mechanism of the bionic frog leg part of the embodiment of the present application has the advantages that, compared with the background art, the jumping mechanism has the beneficial effects that: BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a perspective view of a jumping mechanism of a bionic frog leg part according to an embodiment of the present application;

[0020] Figure 2 FIG. 5 is an exploded schematic view of a jumping mechanism of a bionic frog leg part according to an embodiment of the present application;

[0021] Figure 3 It is a structure schematic view of the energy storage of the jumping mechanism of the bionic frog leg in the embodiment of the present application;

[0022] Figure 4 It is a structure schematic view of the jumping mechanism of the bionic frog leg in the embodiment of the present application;

[0023] Figure 5 It is a flying process view of the jumping mechanism of the bionic frog leg in the embodiment of the present application;

[0024] Figure 6 It is a connection schematic view of the experimental release platform and the jumping mechanism in the embodiment of the present application;

[0025] Figure 7 It is a structure schematic view of the jumping launch platform in the embodiment of the present application.

[0026] In the drawings: 1 - water breaking assembly; 101 - water breaking head; 102 - fixing support; 2 - thigh link; 3 - elastic potential energy storage assembly; 301 - fixator; 302 - rubber belt; 303 - first cylindrical pin; 4 - calf link; 5 - flippers; 6 - first transmission assembly; 601 - first gear; 602 - second cylindrical pin; 7 - second transmission assembly; 701 - second gear; 702 - third cylindrical pin; 703 - third gear; 704 - fourth cylindrical pin; 8 - friction buckle; 9 - connector; 10 - water cylinder; 11 - jumping launch platform; 111 - adjustable support; 112 - presser; 113 - screw; 12 - traction rope reverser; 13 - traction rope; 14 - stop block. DETAILED DESCRIPTION

[0027] The present application will be further described below in conjunction with specific embodiments. Among them, the drawings are only used for example description, and the representation is only a schematic view, not a physical drawing, and cannot be understood as a limitation on the present patent; in order to better illustrate the embodiments of the present application, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some known structures and their descriptions in the drawings may be omitted.

[0028] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the positional relationship described in the drawings is only used for example description, and cannot be understood as a limitation on the present patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] Example 1

[0030] A biomimetic frog-like leg jumping mechanism, such as Figures 1 to 5 As shown, the device includes a water-breaking assembly 1, thigh rods 2, an elastic potential energy storage assembly 3, lower leg rods 4, a connector 9, and a treading water assembly. One end of each of the two thigh rods 2 is hinged to the bottom of the water-breaking assembly 1, and one end of each of the two lower leg rods 4 is hinged to the other end of each of the two thigh rods 2 via a first cylindrical pin 303. The elastic potential energy storage assembly 3 is installed between the two first cylindrical pins 303, and the other end of each of the two lower leg rods 4 is hinged to the connector 9. The treading water assembly includes two flat fins 5, one end of each of the two fins 5 is hinged to the connector 9, and the other end of each of the two lower leg rods 4 is connected to one end of each of the two fins 5 via a transmission connection.

[0031] In the aforementioned biomimetic frog-like leg jumping mechanism, the thigh rod 2 and the water-breaking component 1 first rotate relative to each other, causing the lower leg rod 4, which is hinged to the thigh rod 2, to rotate. At this time, the angle between the thigh rod 2 and the lower leg rod 4 decreases, and the distance between the two first cylindrical pins 303 gradually increases. The elastic potential energy storage component 3 stores elastic potential energy. Simultaneously, the lower leg rod 4 drives the flippers 5 to rotate, increasing the angle between the two flippers 5. This fixes the thigh rod 2 and the lower leg rod 4, allowing the elastic potential energy to be stored. The jumping mechanism is then placed in the water, and the thigh rod is released... With the thigh rod 2 and lower leg rod 4 fixed together, the elastic potential energy storage component 3 releases elastic potential energy, converting it into mechanical energy. This causes the thigh rod 2, lower leg rod 4, and flippers 5 to rotate, simulating the contraction and relaxation of the muscles in a frog's leg. The flippers 5 simulate the process of a frog slapping the water when jumping in water. The flat flippers 5 step on the water, generating a force with it. This force is converted into the driving force for the jumping mechanism to leap out of the water. During the jump, the jumping mechanism gradually changes from a flat shape to a slender shape, reducing water resistance and making the jumping behavior in water smoother and more natural. The jumping mechanism in this embodiment is small in size, simple in structure, and has low resistance when jumping in water, making it suitable for water-air cross-medium jumping.

[0032] The thigh and lower leg components can be made of polylactic acid (PLA), a high-molecular-weight material with low density, which can withstand significant elastic potential energy. The flippers can also be made of PLA, mimicking the flippers of frogs, and possess a certain degree of flexibility. This allows them to maximize the utilization of fluid resistance encountered when treading water and convert it into mechanical energy for the jumping mechanism to leap out of the water.

[0033] like Figures 1 to 5As shown, the water breaking assembly 1 comprises a water breaking head 101 and a fixed support 102, the water breaking head 101 is located at the top of the fixed support 102, and one end of the two thigh linkers 2 is respectively hinged with the fixed support 102 through the second cylindrical pin 602. The fixed support 102 can reduce the action force with the water flow to a certain extent under the shielding of the water breaking head 101, thereby weakening the energy consumption and reducing the energy consumption cost. Wherein, the fixed support 102 can be a grid hollow structure, which can reduce the weight of the water breaking assembly 1.

[0034] As shown in Figures 1 to 5 , the water breaking head 101 is streamlined, and the outer diameter of the water breaking head 101 gradually decreases from one end close to the fixed support 102 to the other end away from the fixed support 102. Specifically, the streamlined design of the water breaking head 101 can reduce the resistance and friction of the water breaking head 101 in water, improve the speed and efficiency of the jumping mechanism, and can more quickly transfer energy to the liquid when breaking the surface tension of the liquid, so that the surface tension of the liquid is broken, realizing more efficient breaking effect, in addition, the streamlined design can also reduce the fluctuation of the liquid when the jumping mechanism moves, ensuring the stability and smoothness of the jumping mechanism in the liquid. The water breaking head 101 assembly can work stably under various water conditions, and has wide applicability.

[0035] Specifically, as shown in Figure 1 , Figure 2 and Figure 4 , it further comprises a first transmission assembly 6, the first transmission assembly 6 comprises a first gear 601 and a first bearing, two first gears 601 are respectively fixed on one end of the two thigh linkers 2, and the two first gears 601 are respectively connected with the second cylindrical pin 602 through the first bearing, and the two first gears 601 are engaged. The two thigh linkers 2 and the fixed support 102 constitute two rotation pairs, realizing the movement of the bionic frog thigh. When implementing, the first transmission assembly 6 is used to constrain the angular velocity of the two thigh linkers 2, when one of the thigh linkers 2 rotates clockwise, the other thigh linker 2 rotates counterclockwise, realizing the same size of angular velocity, ensuring the synchronous movement of the two thigh linkers 2, and ensuring the synchronism and stability of the movement.

[0036] As shown in Figure 1 , Figure 2 and Figure 4As shown, the second transmission assembly 7 includes two second gears 701 and two third gears 703. The two second gears 701 are respectively fixed at one end of the two shank members 4, and are respectively hinged to the connector 9 through a third cylindrical pin 702. The two second gears 701 are engaged with each other. The two third gears 703 are respectively fixed at one end of the two flippers 5, and are respectively hinged to the connector 9 through a fourth cylindrical pin 704. The two second gears 701 are respectively engaged with the two third gears 703. In implementation, the second gears 701 are connected to the connector 9 through the third cylindrical pin 702, so as to ensure stable transmission of force and angular velocity during movement, and to provide higher efficiency and stability for the bionic frog jumping.

[0037] The first gear 601, the second gear 701 and the third gear 703 have the same structure. Specifically, the first gear 601 has a modulus of 1, a tooth number of 15, and a pressure angle of 20 degrees. The six gears constrain the freedom degree of the jumping mechanism to be 1, so as to realize jumping of the jumping mechanism in the vertical direction, and to obtain better water-air jumping performance. Figure 5

[0038] Specifically, when the jumping mechanism is in the energy storage state, the included angle between the thigh member 2 and the shank member 4 is 16.2°, so as to avoid singular position of the members, and to reduce deformation of the members. When the jumping mechanism is in the flying state, the included angle between the thigh member 2 and the shank member 4 is expanded to 188.64°, so as to further increase the water beating range of the flipper 5, and to obtain larger mechanical energy of the jumping mechanism in a short time.

[0039] Embodiment Two

[0040] This embodiment is similar to the embodiment one, and the difference lies in that, as shown in FIG. 2, the first gear 601 is replaced by a second gear 701, and the second gear 701 has a modulus of 1, a tooth number of 15, and a pressure angle of 20 degrees. Figures 1 to 4 ​As shown, the elastic potential energy storage assembly 3 comprises a rubber band 302 and a fixer 301, two ends of the rubber band 302 are respectively fixedly connected to the fixer 301, and the fixer 301 is sleeved on the first cylindrical pin 303. Specifically, the fixer 301 is in the shape of a circular tube, and a plurality of accommodation grooves are arranged on the outer periphery of the fixer 301, the two ends of the rubber band 302 can be respectively sleeved in the accommodation grooves, and the accommodation grooves can stably fix the rubber band 302 to prevent the rubber band 302 from sliding laterally due to its own elastic force after being stretched. In addition, the rubber band 302 is arranged opposite to the fixer 301, so that the rubber band 302 can be fixed on the fixer 301 with the same length after being stretched, thereby facilitating the calculation of the stored elastic potential energy. The elastic potential energy storage assembly 3 simulates the contraction and relaxation of the frog's leg muscle such as quadriceps femoris and hamstrings.

[0041] As shown in Figure 2 , Figure 3 , Figure 5 and Figure 6 , it further comprises a friction buckle 8, the friction buckle 8 is in the shape of "C", and the inner sides of the two ends of the friction buckle 8 are respectively connected with the thigh rod member 2 and the lower leg rod member 4. Specifically, the inner sides of the two ends of the friction buckle 8 are respectively provided with a plurality of protrusions, when the elastic potential energy storage assembly 3 is in the energy storage state, the protrusions act on the thigh rod member 2 and the lower leg rod member 4 respectively, so that the jumping mechanism is in a static equilibrium state.

[0042] Embodiment three

[0043] This embodiment is similar to embodiment two, and the difference lies in that, as shown in Figure 6 , it further comprises an experimental release platform, the experimental release platform comprises a water cylinder 10, a jumping launching platform 11, a traction rope reverser 12 and a traction rope 13, the jumping launching platform 11 is installed on both sides of the water cylinder 10, the traction rope reverser 12 is arranged on the jumping launching platform 11, one end of the traction rope 13 is connected to the traction rope reverser 12, and the other end of the traction rope 13 is connected to the friction buckle 8. In the implementation, when the jumping mechanism is in the energy storage state, the thigh rod member 2 and the lower leg rod member 4 are fixed by the friction buckle 8, the two jumping launching platforms 11 are respectively fixed on the opposite two side walls of the water cylinder 10, and the traction ropes 13 on the two jumping launching platforms 11 are respectively connected with the friction buckles 8 on both sides of the jumping structure. At this time, the jumping mechanism is located underwater, and the direction of the traction rope 13 in the water cylinder 10 is parallel to the water surface. When the traction rope 13 is synchronously subjected to a pulling force, the friction buckle 8 is released, and the elastic potential energy storage assembly 3 releases the elastic potential energy to convert it into mechanical energy, so that the jumping mechanism can jump vertically out.

[0044] As shown in Figure 6 , Figure 7As shown, the jumping launching platform 11 comprises an adjustable support 111, a presser 112 and a screw 113, the adjustable support 111 is in a "U" shape, the presser 112 is located between the two sides of the adjustable support 111, the screw 113 is threadedly connected with one side of the adjustable support 111, the screw 113 is connected with the presser 112, and the presser 112 is matched with one side of the adjustable support 111 to clamp the side wall of the water tank 10. When installing, the adjustable support 111 is hung on the side wall of the water tank 10, the screw 113 is tightened, the presser 112 is matched with the adjustable support 111 to clamp the side wall of the water tank 10, and the jumping launching platform 11 is fixed.

[0045] The adjustable support 111 is provided with a groove, one side of the groove is provided with a rack, the traction rope reverser 12 is located in the groove, the traction rope reverser 12 is provided with a pawl, and the pawl is engaged with the rack, Figure 6 、 Figure 7 As shown, the adjustable support 111 is provided with a groove, one side of the groove is provided with a rack, the traction rope reverser 12 is located in the groove, the traction rope reverser 12 is provided with a pawl, and the pawl is engaged with the rack,

[0046] In the embodiment, the vertical position of the traction rope 13 in water can be changed by changing the vertical position of the traction rope reverser 12, the experimental release platform can repeatedly perform underwater experiments in this way, and only the friction buckle 8 and the traction rope reverser 12 need to be simply installed and adjusted, and the jumping mechanism head assembly 1 can be located on the water surface in a vertical posture, so that a rigorous and repeatable experimental good environment is provided for underwater jumping experiments.

[0047] In the specific contents of the above specific embodiments, any inconsistent combination of technical features can be combined, and in order to make the description simple, all possible combinations of the above technical features are not described, however, as long as the combination of these technical features does not exist, it should be considered that it is within the scope of the present application.

[0048] Obviously, the above embodiments of the application are only examples for clearly illustrating the application, and are not intended to limit the implementation manner of the application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the implementation manners are not required or can not be exhausted. Any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the claims of the application.

Claims

1. A jumping mechanism that imitates a frog's leg, characterized by, The utility model provides a kind of water breaking component (1), thigh bar (2), elastic potential storage component (3), calf bar (4), connector (9) and splashing component, two the bottom of the water breaking component (1) is respectively hinged with one end of two thigh bar (2), two calf bar (4) one end is respectively hinged with the other end of two thigh bar (2) by first cylindrical pin (303), the elastic potential storage component (3) is installed between two first cylindrical pin (303), two calf bar (4) other end is respectively hinged with the connector (9), and the splashing component includes two flat flippers (5), two the connector (9) is respectively hinged with one end of two flippers (5), and two calf bar (4) other end is transmission connection with one end of two flippers (5);It further includes friction buckle (8), the inner side of two ends of the friction buckle (8) is respectively connected with thigh bar (2), calf bar (4) with clamping.

2. The jumping mechanism of a bionic frog's leg according to claim 1, characterized in that, The water breaking component (1) includes water breaking head (101) and fixed support (102), the water breaking head (101) is located at the top of the fixed support (102), and one end of two thigh bar (2) is hinged with the fixed support (102) by second cylindrical pin (602).

3. The jumping mechanism of a bionic frog's leg according to claim 2, characterized in that, The water breaking head (101) is streamline, and the outer diameter of the water breaking head (101) gradually decreases from one end close to the fixed support (102) to the other end away from the fixed support (102).

4. The jumping mechanism of a bionic frog's leg according to claim 2, characterized in that, It further includes first transmission component (6), the first transmission component (6) includes first gear (601) and first bearing, two first gears (601) are respectively fixed on one end of two thigh bar (2), two first gears (601) are connected with the second cylindrical pin (602) by the first bearing, and two first gears (601) are engaged.

5. The jumping mechanism of a bionic frog's leg according to claim 4, characterized in that, It further includes second transmission component (7), the second transmission component (7) includes second gear (701) and third gear (703), two second gears (701) are respectively fixed on one end of two calf bar (4), two second gears (701) are hinged with the connector (9) by third cylindrical pin (702), two second gears (701) are engaged, two third gears (703) are respectively fixed on one end of two flippers (5), two third gears (703) are hinged with the connector (9) by fourth cylindrical pin (704), and two second gears (701) are respectively engaged with two third gears (703).

6. The jumping mechanism of a bionic frog's leg according to claim 5, characterized in that, The first gear (601), the second gear (701) and the third gear (703) are consistent in structure.

7. The jumping mechanism of a bionic frog's leg according to claim 1, characterized in that, The elastic potential energy storage assembly (3) comprises rubber belts (302) and fixers (301), two ends of each of the rubber belts (302) are fixedly connected to the fixers (301), and the fixers (301) are sleeved on the first cylindrical pins (303).

8. The jumping mechanism of a bionic frog's leg according to any one of claims 1 to 7, characterized in that, Further comprising an experimental release platform, the experimental release platform comprises a water tank (10), a jumping launch platform (11), a traction rope reverser (12) and a traction rope (13), the jumping launch platform (11) is installed on both sides of the water tank (10), the traction rope reverser (12) is installed on the jumping launch platform (11), one end of the traction rope (13) is connected to the traction rope reverser (12), and the other end of the traction rope (13) is connected to the friction buckle (8).

9. The jumping mechanism of a bionic frog's leg according to claim 8, characterized in that, The jumping launch platform (11) comprises adjustable supports (111), compressors (112) and screws (113), the adjustable supports (111) are in a "U" shape, the compressors (112) are located between both sides of the adjustable supports (111), the screws (113) are threadedly connected to one side of the adjustable supports (111), the screws (113) are connected with the compressors (112), and the compressors (112) are matched with one side of the adjustable supports (111) to clamp the side wall of the water tank (10).

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