Bionic frog bouncing device

Abstract

The utility model provides a bionic frog bouncing device which comprises a machine body module, a driving module and a bouncing module, the driving module comprises a driving motor and a wire wheel which are fixed on a machine frame, the bouncing module is of a bent structure similar to frog rear legs, and pin shafts and torsion springs are arranged at the joints of the legs. A line wheel on the driving module pulls a rear shank through a pull rope to enable the whole bouncing module to be bent, a torsional spring at a joint of the bouncing module is in a compressed state, and along with continuous rotation of the line wheel, the pull rope can be separated from a thin position of the line wheel, so that tension on the bouncing module disappears, the torsional spring stops compression and starts to release elastic potential energy; the torsion spring drives the whole bouncing module to jump obliquely upwards to finish jumping; and when landing, the front supporting legs and the kickstands provide buffering. The frog jumping simulation device simulates frog jumping in the mode that the driving motor compresses the torsional spring, and is simple in structure and high in practicability.

Description

Technical Field

[0001] The utility model relates to the field of bionics, in particular to a bionic frog bouncing device. Background Art

[0002] In recent years, bionic mechanical technology has been widely used and studied in the field of robotics. Among them, the bionic mechanical frog has attracted much attention due to its unique morphology and movement characteristics.

[0003] The jumping ability of bionic frogs has great potential in industrial production, but the current bionic jumping devices require multiple control devices during the jumping process, which makes the current bionic mechanical structure complex and costly. Utility Model Content

[0004] The utility model is based on the above technical problems and proposes a bionic frog jumping device.

[0005] A bionic frog jumping device, comprising: a body module, a driving module, and a jumping module;

[0006] The body module includes a frame and front legs, the frame is a flat plate, and connecting seats are provided at the four corners of the lower side of the frame, and the two front legs are respectively hinged to the two connecting seats at the front of the frame through pins;

[0007] The jumping module comprises a rear thigh, a rear calf and a foot brace, wherein the rear thigh, the rear calf and the foot brace are sequentially connected to form a frog-like rear leg structure, a pin shaft and a torsion spring are arranged at the connection between the rear thigh, the connecting seat and the rear calf, the foot brace is connected to the rear calf via a fixed shaft, and a rope seat is arranged on the inner side of the rear part of the rear calf;

[0008] The driving module includes a driving motor, a reel, a battery, and a pull rope. The driving motor is a motor with a reducer, the driving motor is fixed on one side of the frame, the battery is fixed on the other side of the frame, the reel is rotatably installed in the middle of the frame, the reel is driven to rotate by the driving motor, a long hole is opened in the middle of the frame, the lower part of the reel passes through the long hole, a winding drum is provided on the outer side of the reel, the outer end of the winding drum is an inclined surface, one end of the pull rope is fixed to the side of the winding drum, and the other end of the pull rope is forked into two connecting ropes, and the distal ends of the connecting ropes are respectively connected and fixed to the two rope seats.

[0009] Preferably, the upper ends of the two rear thighs are hinged to the two connecting seats at the rear of the frame through the pin shaft, the front end of the rear calf is hinged to the lower end of the rear thigh through the pin shaft, and torsion springs are provided on the pin shafts between the rear thigh and the connecting seat and between the rear thigh and the rear calf, and the foot support is located at the lower side of the rear calf.

[0010] Preferably, the minimum thickness of the winding drum is smaller than the diameter of the pull rope, the maximum thickness of the winding drum is larger than the diameter of the pull rope, and the diameter of the connection between the pull rope and the winding drum is larger than the diameter of the pull rope.

[0011] Preferably, the foot support is an elastic hollow plate.

[0012] Beneficial effects: The device utilizes a driving motor to compress a torsion spring to simulate frog jumping, and has a simple structure and high practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The structure of the utility model is shown Figure 1 ;

[0014] Figure 2 The structure of the utility model is shown Figure 2 ;

[0015] Figure 3 A schematic structural diagram of a winding drum is shown. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0017] like Figure 1~Figure 3 A bionic frog bouncing device shown includes: a body module, a driving module, and a bouncing module, wherein the driving module provides power for the compression of the bouncing module.

[0018] The body module includes a frame 1 and front legs 3. The frame 1 is a flat plate. Connecting seats 2 are provided at the four corners of the lower side of the frame 1. The two front legs 3 are respectively hinged to the two connecting seats 2 at the front of the frame 1 through pins 5.

[0019] The bouncing module includes a rear thigh 4, a rear calf 6, and a foot brace 8, which are connected in sequence to form a frog-like rear leg structure. The upper ends of the two rear thighs 4 are hinged to the two connecting seats 2 at the rear of the frame 1 through a pin 5, and the front end of the rear calf 6 is hinged to the lower end of the rear thigh 4 through a pin 5. Torsion springs are provided on the pins 5 between the rear thigh 4 and the connecting seat 2 and between the rear thigh 4 and the rear calf 6. The foot brace 8 is located on the lower side of the rear calf 6, and the foot brace 8 is connected to the rear calf 6 through a fixed shaft 7. A rope seat 9 is provided on the inner side of the rear part of the rear calf 6.

[0020] In the jumping module, the rear thigh 4, the rear calf 6 and the foot support 8 are configured as a hollow structural frame on the basis of ensuring their structural strength, and the foot support 8 is a hollow plate with a certain elasticity.

[0021] The driving module includes a driving motor 10, a reel 12, a battery 15, and a pull rope 14. The driving motor 10 is a motor with a reducer. The driving motor 10 is fixed on one side of the frame 1, and the battery 15 is fixed on the other side of the frame 1. The reel 12 is rotatably installed in the middle of the frame 1 and is driven to rotate by the output shaft 11 of the driving motor 10. A long hole is opened in the middle of the frame 1, and the lower part of the reel 12 passes through the long hole. A winding drum 13 is provided on the outside of the reel 12. One end of the pull rope 14 is fixed at the side of the winding drum 13, and the other end of the pull rope 14 is forked into two connecting ropes 15. The distal ends of the connecting ropes 15 are respectively connected and fixed to two rope seats 9.

[0022] In order to ensure that the pull rope 14 can be released in time, an inclined surface is provided at the outer end of the winding drum 13, that is: the minimum thickness of the winding drum 13 is less than the diameter of the pull rope 14, the maximum thickness of the winding drum 13 is greater than the diameter of the pull rope 14, and the diameter of the connection between the pull rope 14 and the winding drum 13 is greater than the diameter of the pull rope 14. In this way, when the winding drum 13 rotates counterclockwise, the pull rope 14 will first be wound around the side of the winding drum 13. As the thickness of the winding drum 13 decreases, when the thickness of the winding drum 13 is not enough to support the winding of the pull rope 14, the pull rope 14 will fall from the winding drum 13. At this time, the wound part of the pull rope 14 will be released. With the release of the pull rope 14, the tension constraining the hind calf 6 disappears, and the torsion springs on the hind calf 6 and the hind thigh 4 will also be released, thereby achieving a frog jump.

[0023] In addition, it should be noted that the fixed position of the pull rope 14 on the side of the winding drum 13 and the thickness change of the winding drum 13 (i.e., the detachment point of the pull rope 14) are calculated and tested according to the actual jumping conditions (height, distance). No further explanation is given here. Changing the length of the pull rope 14 and the winding length of the pull rope 14 can change the height and distance of the bounce.

[0024] Embodiment 1

[0025] In this embodiment, the pin shaft 5 at the upper end of the front leg can also be provided with a front torsion spring with large torque. When the torsion spring on the bouncing module is in a fully compressed state, the front torsion spring has only a relatively small compression and its deformation is relatively small.

[0026] In this way, the front torsion spring will not affect the normal bouncing of the bouncing module, but can also play a certain buffering role when the device falls. In order to further improve its buffering effect, the lower part of the front leg gradually transitions forward and bends.

[0027] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A bionic frog jumping device, characterized in that: include: Body module, drive module, and bounce module; The body module includes a frame and front legs, the frame is a flat plate, and connecting seats are provided at the four corners of the lower side of the frame, and the two front legs are respectively hinged to the two connecting seats at the front of the frame through pins; The jumping module comprises a rear thigh, a rear calf and a foot brace, wherein the rear thigh, the rear calf and the foot brace are sequentially connected to form a frog-like rear leg structure, a pin shaft and a torsion spring are arranged at the connection between the rear thigh, the connecting seat and the rear calf, the foot brace is connected to the rear calf via a fixed shaft, and a rope seat is arranged on the inner side of the rear part of the rear calf; The driving module includes a driving motor, a reel, a battery, and a pull rope. The driving motor is a motor with a reducer, the driving motor is fixed on one side of the frame, the battery is fixed on the other side of the frame, the reel is rotatably installed in the middle of the frame, the reel is driven to rotate by the driving motor, a long hole is opened in the middle of the frame, the lower part of the reel passes through the long hole, a winding drum is provided on the outer side of the reel, the outer end of the winding drum is an inclined surface, one end of the pull rope is fixed to the side of the winding drum, and the other end of the pull rope is forked into two connecting ropes, and the distal ends of the connecting ropes are respectively connected and fixed to the two rope seats.

2. The bionic frog jumping device according to claim 1, characterized in that: The upper ends of the two rear thighs are hinged to the two connecting seats at the rear of the frame through the pin shaft, the front end of the rear calf is hinged to the lower end of the rear thigh through the pin shaft, and torsion springs are provided on the pin shafts between the rear thigh and the connecting seat and between the rear thigh and the rear calf, and the foot support is located at the lower side of the rear calf.

3. The bionic frog jumping device according to claim 1, characterized in that: The minimum thickness of the winding drum is smaller than the diameter of the pull rope, the maximum thickness of the winding drum is larger than the diameter of the pull rope, and the diameter of the connection between the pull rope and the winding drum is larger than the diameter of the pull rope.

4. The bionic frog jumping device according to claim 1, characterized in that: The foot support is a hollow plate with elasticity.

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