CN110711366A - Novel swimming diving propulsion tool with variable speed and rigidity - Google Patents

Novel swimming diving propulsion tool with variable speed and rigidity Download PDF

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Publication number
CN110711366A
CN110711366A CN201810766439.3A CN201810766439A CN110711366A CN 110711366 A CN110711366 A CN 110711366A CN 201810766439 A CN201810766439 A CN 201810766439A CN 110711366 A CN110711366 A CN 110711366A
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China
Prior art keywords
speed
stiffness
fin plate
taper
longitudinal
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CN201810766439.3A
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Chinese (zh)
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朱光
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Individual
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Individual
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Priority to CN201810766439.3A priority Critical patent/CN110711366A/en
Priority to PCT/CN2019/091442 priority patent/WO2019242573A1/en
Publication of CN110711366A publication Critical patent/CN110711366A/en
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B31/00—Swimming aids
    • A63B31/08—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs
    • A63B31/10—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs held by, or attachable to, the hands or feet
    • A63B31/11—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs held by, or attachable to, the hands or feet attachable only to the feet
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2225/00—Miscellaneous features of sport apparatus, devices or equipment
    • A63B2225/60—Apparatus used in water
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2244/00—Sports without balls
    • A63B2244/20—Swimming

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Prostheses (AREA)

Abstract

The invention discloses a novel speed-dependent variable stiffness swimming diving propulsion tool, which comprises a web plate and a longitudinal keel or comprises a fin plate and a longitudinal keel, wherein at least one longitudinal keel positioned on the longitudinal side edge or in the middle of the web plate or the fin plate is a speed-dependent variable stiffness longitudinal keel, the speed-dependent variable stiffness longitudinal keel comprises at least one section of sleeve and at least one stiffness speed-dependent adjusting device, the stiffness speed-dependent adjusting device comprises a hollow taper pipe in the sleeve and a containing object hidden in the taper pipe, the containing object hidden in the taper pipe is liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological liquid, or the containing object hidden in the taper pipe is a speed-dependent variable stiffness taper rod which has a same longitudinal axis with the taper pipe and can move longitudinally along the longitudinal axis of the taper pipe, and the sleeve is flexible sleeve or rigid sleeve.

Description

Novel swimming diving propulsion tool with variable speed and rigidity
Technical Field
The invention relates to the industries of swimming equipment and diving equipment, in particular to a novel swimming diving propulsion tool with variable stiffness along with speed, which is used for swimming and diving sports.
Background
In modern society, swimming and diving sports are increasingly popularized, various swimming equipment and diving equipment are layered endlessly, and most of the swimming equipment and diving equipment use flippers as main propulsion tools for advancing, wherein the common flippers are respectively worn on two feet, the two flippers are worn on the two feet, the bionic tail fin is worn on the two feet, the two flippers are driving forces for advancing by alternate pumping of the two legs of a swimmer, and the two flippers and the bionic tail fin are driving forces for advancing by synchronous pumping of the two legs of the swimmer.
The swimmer can obtain the best propelling force only by beating water at the optimal beating frequency no matter double-fin, double-fin and single-fin or bionic tail fin; when a swimmer wishes to change the speed of swimming, such as by pumping water at a higher frequency for fast swimming or at a lower frequency for slow swimming, the efficiency of propulsion decreases, especially when the swimmer pumps water at a higher frequency, which is not only inefficient but also quickly fatiguing.
Disclosure of Invention
Aiming at the defects that the main propelling tools of the prior swimming equipment and diving equipment, namely double-foot double-web, double-foot single-web and bionic tail fin, do not well solve the problem of higher propelling efficiency in two states of high-speed quick swimming and low-speed slow swimming, the invention provides a novel speed-dependent variable-rigidity swimming diving propelling tool by combining the characteristics of a human motion structure and scientifically and reasonably applying ergonomics, by means of the novel speed-dependent variable-rigidity swimming diving propelling tool, a swimmer can pump water at a higher frequency for high-speed quick swimming and can pump water at a lower frequency for low-speed slow swimming, the rigidity of a longitudinal keel of the novel speed-dependent variable-rigidity swimming diving propelling tool is changed along with the change of the swimming speed or the change of the leg swinging frequency or the leg swinging speed of the swimmer, and the swimmer can effectively improve the specific gravity of useful work no matter what frequency the swimmer pumps water, the advancing efficiency and the swimming speed of swimming and diving are improved to the maximum extent, the physical strength is saved, the advancing potential of a swimmer in water is fully exerted, and the purpose of long-time, long-distance and continuous high-speed tour is finally achieved; the swimmer can effectively reduce the fatigue feeling generated when the swimmer continuously tours for a long distance and a long time through variable-speed tour.
The invention specifically adopts the following scheme:
the utility model provides a novel along with quick rigidity swimming dive propulsion means, includes web board and longitudinal keel, or includes fin and longitudinal keel, its characterized in that: the longitudinal keel is positioned on the longitudinal side edge of the web plate or the fin plate or positioned in the middle of the web plate or the fin plate, at least one longitudinal keel with variable stiffness along with speed is provided, the longitudinal keel with variable stiffness along with speed comprises at least one section of sleeve and at least one device for adjusting the stiffness along with speed, the device for adjusting the stiffness along with speed comprises a conical tube with hollow inner part of the sleeve and a container hidden in the conical tube, the container hidden in the conical tube is liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological liquid, or the container hidden in the conical tube is a conical rod with variable stiffness along with speed, the conical tube has a longitudinal axis which is coaxial with the conical tube and can move longitudinally along the longitudinal axis of the conical tube, the longitudinal axis of the conical tube is a curve or a straight line, the cross section of the inner cavity of the conical tube, which is vertical to the longitudinal axis of the conical tube, is non-circular or circular, and the perimeter of the cross section of each inner cavity of the conical tube gradually decreases from the front end in the advancing direction of the swimmer The cross section of the outer contour of the speed-dependent stiffness taper rod, which is vertical to the longitudinal axis of the speed-dependent stiffness taper rod, is also non-circular or circular, the perimeter of the cross section of the outer contour of each speed-dependent stiffness taper rod is gradually reduced from the front end of the traveling direction of the swimmer to the rear end of the traveling direction of the swimmer, the cross section of the inner cavity of the taper tube at the same section is the same as the cross section of the outer contour of the speed-dependent stiffness taper rod, the perimeter of the cross section of the inner cavity of the taper tube at the same section is larger than the perimeter of the cross section of the outer contour of the speed-dependent stiffness taper rod, namely, the cross section of the inner cavity of the taper tube at the same section is proportionally amplified of the cross section of the outer contour of the speed-dependent stiffness taper rod at the same section, the specific types of the novel speed-dependent stiffness swimming diving propelling tool comprise but are not limited to a double, also comprises a variable tail fin, a single fin with two feet, namely dolphin fins, and the sleeve is a flexible sleeve or a rigid sleeve.
The longitudinal keels of the double-foot single fin are usually two left and right longitudinal keels which are respectively positioned on two longitudinal side edges of the left and right sides of the fin plate of the double-foot single fin, and the two longitudinal keels are usually the longitudinal keels with the rigidity changing along with the speed; the bionic tail fin is characterized in that the two longitudinal keels of the bionic tail fin are also a left longitudinal keel and a right longitudinal keel, and are respectively positioned on the two longitudinal side edges of the left side and the right side of a fin plate of the bionic tail fin, and the two longitudinal keels are also the longitudinal keels with the variable stiffness along with the speed under the common condition; the longitudinal keels of each fin of the two-footed double-fin are usually also two, left and right, respectively located on the two longitudinal sides of the left and right sides of each fin of the two-footed double-fin, and usually, the four longitudinal keels are also longitudinal keels with variable stiffness along with the speed. The longitudinal side edges are the outer edges of the longitudinal profile.
When the rigidity speed-dependent adjusting device consists of the taper pipe and the non-Newtonian fluid, the non-Newtonian fluid enables the bending rigidity of the longitudinal keel to be increased along with the speed-dependent rigidity change along with the increase of the leg swinging frequency or the leg swinging speed of a swimmer; as the swing frequency or swing rate decreases, the non-newtonian fluid causes the bending stiffness of the longitudinal spine to decrease with the rate of change of stiffness.
When the material for manufacturing the flexible sleeve or the speed-dependent stiffness taper rod is replaced by a magnetorheological elastomer, or the content hidden in the taper tube is magnetorheological liquid, an electromagnet, a power supply and a pumping control circuit board or a driving control circuit board for controlling the electromagnet to act, which are communicated with each other through a lead, are also arranged in the web plate or the fin plate near the sleeve, or a permanent magnet is also arranged for changing the longitudinal bending stiffness of the speed-dependent stiffness longitudinal keel; when the material for manufacturing the flexible sleeve or the speed-dependent stiffness taper rod is replaced by an electrorheological elastomer, or the contents hidden in the taper tube are electrorheological liquid, the positive electrode and the negative electrode of the circuit are respectively arranged in the front end and the rear end of the taper tube, on the flexible sleeve and on the speed-dependent stiffness taper rod, a corresponding control circuit board communicated with the circuit and a corresponding power supply are connected with each other through leads and hidden in the web plate or the fin plate and are also used for changing the longitudinal bending stiffness of the speed-dependent stiffness longitudinal keel.
When the content hidden in the taper pipe is liquid, gas, non-Newtonian fluid, magneto-rheological liquid or electro-rheological liquid, namely the rigidity speed-dependent adjusting device comprises the taper pipe which is hollow in the sleeve and one of five fluid media of liquid, gas, non-Newtonian fluid, magneto-rheological liquid or electro-rheological liquid, the rigidity speed-dependent adjusting device also comprises a pumping assembly or a damping cylinder assembly which is arranged at the big end of the taper pipe, namely the front end of the traveling direction of the swimmer and has a common longitudinal axis with the taper pipe; the damping cylinder component faces to the small end of the taper pipe, namely the rear end of the swimmer advancing direction, and is fixed with the taper pipe end to end or is integrated with the taper pipe, the damping cylinder component faces to the large end of the taper pipe, namely the front end of the swimmer advancing direction, and is freely suspended and can freely stretch out and draw back, the damping cylinder component comprises a damping cylinder and a columnar cavity which is coaxial with the damping cylinder and is connected with the damping cylinder end to end, the damping cylinder comprises a cylinder barrel and a piston, when the rear end of the damping cylinder is the cylinder barrel, the cylinder barrel is fixed with the inner wall of the taper pipe or is integrated with the taper pipe, the rear end of the cylinder barrel facing to the rear end, namely the rear end of the swimmer advancing direction, is provided with a damping hole which is communicated with the accommodating object in the taper pipe and the inner cavity of the damping cylinder, the front end of the piston extends into the columnar cavity, when the rear end of the damping cylinder is the, the end of the piston towards the rear, namely the end of the swimmer towards the rear in the advancing direction, is provided with a damping hole which is communicated with the contents in the taper pipe and the cavity in the damping cylinder, the end of the cylinder barrel towards the front extends into the columnar cavity, and the columnar cavity in front of the damping cylinder is internally provided with gas or an elastic element which is used for helping the extended piston or the extended cylinder barrel to reset and has a common longitudinal axis with the columnar cavity, usually a compression spring, or the columnar cavity is internally provided with gas and is also provided with the elastic element; the cylindrical cavity, the damping cylinder and the sleeve are sequentially arranged from front to back along the longitudinal axis; when one end of the rear part of the damping cylinder is a cylinder barrel, the cylinder barrel and the columnar cavity can be butted into an integrated structure with the cross section of the equal inner cavity and the common longitudinal axis.
The inner wall of the cylindrical cavity and the outer peripheral surface of the freely extendable piston or cylinder are longitudinally sliding fit surfaces which are sealed and airtight, and at least one sealing ring is usually arranged between the inner wall of the cylindrical cavity and the outer peripheral surface of the freely extendable piston or cylinder.
In general, the head end of the cylindrical cavity, i.e. the head end of the front end in the traveling direction of the swimmer, is further provided with a threaded hole having a common longitudinal axis with the cylindrical cavity and a screw plug, the two ends of the elastic element installed in the cylindrical cavity are supported by the front end of the screw plug and the front end of the piston or the cylinder of the damping cylinder. The deeper the screw plug is screwed in, the greater the pressure force of the gas, the elastic element or both in the columnar cavity along the longitudinal axis direction of the columnar cavity, the greater the initial longitudinal bending rigidity of the longitudinal keel with the variable speed rigidity, and conversely, the smaller the initial longitudinal bending rigidity of the longitudinal keel with the variable speed rigidity, that is, the preset longitudinal bending rigidity.
When a damping cylinder part in the damping cylinder assembly is eliminated and the screwing-in depth of the screw plug is adjusted, the initial longitudinal bending rigidity of the longitudinal keel with the speed-dependent rigidity can still be adjusted, and the difference is only that the characteristic of automatic adjustment along with the speed is lacked or weakened; when the damping cylinder part in the damping cylinder assembly is cancelled, a lengthened speed-dependent stiffness conical rod is placed in the conical pipe at the same time, and the screwing-in depth of the screw plug is adjusted, namely the depth of the screw plug for jacking the speed-dependent stiffness conical rod into the conical pipe can be adjusted, and the initial longitudinal bending stiffness of the speed-dependent stiffness longitudinal keel can still be adjusted, and the difference is only that the characteristic of automatic speed-dependent adjustment is lacked or weakened.
When a swimmer swings the novel swimming diving propulsion tool with variable-speed stiffness, the volume of the taper pipe is changed in the process of bending up and down, liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological fluid in the taper pipe is squeezed into or pulled out of the damping cylinder, the higher the leg swinging frequency or speed of the swimmer is, the higher the flow speed of the liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological fluid squeezed into or pulled out of the damping cylinder is, the more obvious the damping effect is, in addition, positive back pressure provided by the gas and the elastic element in the cylindrical cavity is provided, and the higher the leg swinging frequency or speed of the swimmer is, the higher the longitudinal bending stiffness of the longitudinal keel with variable-speed stiffness is; conversely, the longitudinal bending stiffness of the speed dependent stiffness longitudinal keel is less as the frequency or rate of leg swing of the swimmer is lower.
An upper clamping piece and a lower clamping piece which are as long as the taper pipe are respectively arranged at the upper position and the lower position which are parallel to the upper surface and the lower surface of the web plate or the fin plate and are tangent to or coincident with the inner wall of the taper pipe.
The upper clamping piece and the lower clamping piece are thin slices made of rigid materials, and the materials for making the upper clamping piece and the lower clamping piece include but are not limited to engineering plastics, glass fiber reinforced plastics, carbon fibers, thin-wall steel, aluminum alloy, titanium alloy, thin-wall copper alloy, ceramics, toughened glass, bamboo, wood or nylon.
The upper clamping piece and the lower clamping piece have the function of further enhancing the volume change degree of the taper pipe in the up-and-down bending process in the leg swinging process of a swimmer, so that the speed-dependent stiffness characteristic of the longitudinal bending stiffness of the speed-dependent stiffness longitudinal keel is further amplified.
The pumping assembly is an assembly for pumping liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological liquid and comprises a delivery pump, a pumping power supply and a pumping control circuit board, wherein the delivery pump, the pumping power supply and the pumping control circuit board are connected through conducting wires, an output port of the delivery pump is directly communicated with a conical tube or is communicated with an input port of a cylinder or a hydraulic cylinder which is arranged between a large end of the conical tube and the delivery pump and has a common longitudinal axis with the conical tube, an input port of the delivery pump is connected with a storage cavity arranged in a web plate (101) or a fin plate, the storage cavity stores the liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological liquid, the cylinder or the hydraulic cylinder is fixed with the conical tube in an end-to-end manner or is integrated with the conical tube into a whole body towards the large end of the conical tube, namely the front end of the traveling direction of the swimmer, and the cylinder or the hydraulic cylinder extends into the conical tube towards the small end of the conical, can freely extend and retract, the air cylinder or the hydraulic cylinder comprises a cylinder barrel and a piston, when one end of the rear part of the air cylinder or the hydraulic cylinder is the piston, the cylinder barrel of the cylinder or the hydraulic cylinder is fixed with the inner wall of the taper pipe or is integrated with the taper pipe, the piston extends into the taper pipe and is connected with the speed-dependent stiffness taper rod which is coaxial with the taper pipe at one end towards the rear, namely the rear end in the advancing direction of the swimmer, the connection mode is ball joint, hinge joint or rigid fixation, the ball joint is spherical hinge joint, when one end of the rear part of the air cylinder or the hydraulic cylinder is a cylinder barrel, a piston of the air cylinder or the hydraulic cylinder is fixed with the inner wall of the taper pipe or is integrated with the taper pipe, the cylinder barrel extends into the taper pipe, and the end towards the rear part, namely the rear end in the advancing direction of the swimmer, is connected with the speed-dependent stiffness taper rod which is coaxial with the taper pipe, the connection mode is also ball joint, hinge joint or rigid fixation, and the ball joint is spherical hinge joint; the cylinder and the sleeve are arranged in sequence from front to back along the longitudinal axis, or the hydraulic cylinder and the sleeve are arranged in sequence from front to back along the longitudinal axis.
When the content in the taper pipe is liquid or gas, the input port of the delivery pump can also be directly communicated with the outside, and the corresponding storage cavity is eliminated. When the output port of the delivery pump is directly communicated with the taper pipe, and when the pumping control circuit board positively supplies power to the delivery pump by virtue of a pumping power supply, the delivery pump positively works to pump liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological liquid into the taper pipe, and the longitudinal bending rigidity of the longitudinal keel with the speed-variable rigidity is increased along with the increase of the pressure in the taper pipe; when the pumping control circuit board reversely supplies power to the delivery pump by virtue of the pumping power supply, the delivery pump reversely works to pump liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological liquid out of the taper pipe, and the longitudinal bending rigidity of the longitudinal keel changing along with the speed is reduced along with the reduction of the pressure in the taper pipe.
When the output port of the delivery pump is communicated and additionally arranged between the large head end of the taper pipe and the delivery pump and the input port of the air cylinder or the hydraulic cylinder which is coaxial with the taper pipe in a longitudinal axis, and when the pumping control circuit board positively supplies power to the delivery pump by virtue of a pumping power supply, the delivery pump positively works to pump liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological liquid into the air cylinder or the hydraulic cylinder, and as the pressure in the air cylinder or the hydraulic cylinder rises, the speed-dependent stiffness taper rod connected with one end behind the air cylinder or the hydraulic cylinder longitudinally moves backwards, and the longitudinal bending stiffness of the speed-dependent stiffness longitudinal keel increases; when the pumping control circuit board reversely supplies power to the delivery pump by virtue of the pumping power supply, the delivery pump reversely works to pump liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological liquid out of the air cylinder or the hydraulic cylinder, the speed-dependent stiffness taper rod connected with one end of the rear part of the air cylinder or the hydraulic cylinder longitudinally moves forwards along with the reduction of the pressure in the air cylinder or the hydraulic cylinder, and the longitudinal bending stiffness of the speed-dependent stiffness longitudinal keel is reduced.
The pumping control circuit board is also connected with a manual button for manually controlling the positive and negative pumps of the delivery pump through a lead, and is used for adjusting the initial longitudinal bending rigidity of the longitudinal keel with the speed-dependent rigidity, namely the preset longitudinal bending rigidity.
The pumping control circuit board comprises an amplitude sensor which is arranged on the longitudinal keel, the fin plate or the fin plate and detects the longitudinal bending deformation amplitude of the pumping control circuit board, or comprises a frequency sensor which is arranged on the longitudinal keel, the fin plate or the fin plate and detects the longitudinal bending deformation frequency of the pumping control circuit board, or comprises a speed measuring sensor which is arranged on the longitudinal keel, the fin plate or the fin plate and detects the swimming speed of the swimmer, or comprises a travel switch or an angular displacement sensor which is arranged near the toes of the swimmer and detects the action of the swimmer for hooking the toes or toe tips, and in addition, the pumping control circuit board also comprises a signal amplifying circuit which amplifies the electric signals of the sensor or the travel switch. The pumping control circuit board also typically contains a pumping control chip. The tachometer sensor is typically a flow rate sensor or a GPS tachometer sensor. The travel switch or the angular displacement sensor is mounted in a bridging manner on the articulated arm at two sides of the articulated point of the miniature accelerator pedal, namely the articulated toe pedal, on the web plate or the fin plate which is articulated near the toes of the swimmer. The signal amplifying circuit is connected with the delivery pump through a lead, and the pumping control circuit board is also connected with a pumping power supply through a lead.
When a swimmer simultaneously hooks toes or toes with two feet, a travel switch or an angular displacement sensor which is installed on an articulated arm on two sides of a hinged point of a miniature accelerator pedal hinged on a web plate or a fin plate in a bridging mode is triggered, after the amplification of a signal amplification circuit, a pumping control circuit board positively supplies power to a delivery pump by virtue of a pumping power supply, the delivery pump positively works to pump liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological liquid into an air cylinder or a hydraulic cylinder, and as the pressure in the air cylinder or the hydraulic cylinder rises, a speed-dependent stiffness conical rod connected with one end of the rear part of the air cylinder or the hydraulic cylinder longitudinally moves backwards, the longitudinal bending stiffness of a speed-dependent stiffness longitudinal keel controlled by the two feet is simultaneously increased, the leg swinging frequency or the leg swinging rate is increased at the same time, and the swimmer can realize efficient; when a swimmer asynchronously hooks toes or toes with two feet, travel switches or angular displacement sensors on hinged arms at two sides of a hinged point of the miniature accelerator pedal are triggered to different degrees or at different times, through signal amplification and force amplification of a middle link, the degree of backward longitudinal movement or the time of the speed-dependent stiffness taper rod connected with one end at the rear of the air cylinder or the hydraulic cylinder is different, the longitudinal bending stiffness increasing degree of the speed-dependent stiffness longitudinal keel controlled by the two feet is different, and the swimmer can realize steering or direction fine adjustment correction in the swimming process.
The pumping assembly is disposed within the fin or fin.
When the accommodating object hidden in the taper pipe is a speed-dependent stiffness taper rod which has a common longitudinal axis with the taper pipe, namely the stiffness speed-dependent adjusting device comprises a hollow taper pipe in the sleeve and a speed-dependent stiffness taper rod, the big head end of the taper pipe, namely the front end in the advancing direction of the swimmer, is also provided with a driving device for driving the speed-dependent stiffness taper rod to longitudinally move, the driving device comprises a driving motor, a driving power supply, a driving control circuit board and a driving mechanism, the driving power supply, the driving control circuit board and the driving motor are connected through conducting wires, the specific type of the driving mechanism comprises a lead screw transmission mechanism, a crank block mechanism, a gear rack mechanism, a cam mechanism, a multi-link mechanism, a lever mechanism, a synchronous belt transmission mechanism or a magnetic force transmission mechanism which converts the rotary motion of the driving motor into control of the speed-dependent stiffness taper rod to longitudinally move along the longitudinal axis of the taper pipe, the force input end of the driving mechanism is connected with a motor shaft of the driving motor, the force output end of the driving mechanism is connected with the speed-dependent stiffness taper rod, the power of the driving motor is introduced into the driving mechanism, and the output force is transmitted to the speed-dependent stiffness taper rod through the conversion of the force of the driving mechanism to force the speed-dependent stiffness taper rod to move longitudinally along the longitudinal axis of the taper pipe; the driving mechanism also comprises an electromagnetic force transmission mechanism which controls the speed-variable stiffness taper rod to move longitudinally along the longitudinal axis of the taper pipe through electromagnetic attraction and repulsion forces, and an electromagnet, a driving control circuit board and a driving power supply of the electromagnetic force transmission mechanism are also connected through a lead; the specific type of the speed-dependent stiffness conical rod comprises a smooth surface conical rod with continuously changed cross section perimeter, a step surface conical rod with discontinuously changed cross section perimeter and a chain type conical rod with gradually reduced chain links, wherein the step surface conical rod comprises a step surface type conical rod with fixed length and fixed shape and a telescopic pull rod antenna type conical rod with variable length; the driving device and the sleeve are arranged along the longitudinal axis from front to back in sequence.
The driving mechanism usually adopts an electromagnetic force transmission mechanism or a lead screw transmission mechanism. The screw transmission mechanism comprises a screw and a nut, the driving motor is usually a stepping motor, the driving motor shaft is the screw and is in butt joint with a taper pipe, the driving motor is arranged at the front end of the taper pipe, the nut sleeved on the screw is in ball joint with or fixed to the big head end, namely the front end, of the speed-dependent stiffness taper rod which is hollow and can penetrate through the screw, or the nut directly abuts against the big head end of the speed-dependent stiffness taper rod; or the driving motor shaft is a hollow shaft, a nut is fixed at the rear end of the hollow shaft, the nut and the taper pipe share a common longitudinal axis, the driving motor is arranged at the front end of the taper pipe, the screw rod is sleeved in the nut and longitudinally penetrates through the hollow shaft, the other end of the screw rod is in ball joint with the large head end, namely the rear end, of the speed-dependent stiffness taper rod through a joint bearing, or the ball head of the screw rod directly abuts against a hemispherical socket at the large head end of the speed-dependent stiffness taper rod. The speed ratio is adjusted by changing the screw pitches of the screw rod and the nut, so that the thrust of the screw rod and the moving speed of the nut are changed.
When the driving control circuit board supplies power to the driving motor by means of the driving power supply, the motor shaft rotates, the movement transmission between the screw rod and the nut is utilized, the speed-variable stiffness-following taper rod is driven to move longitudinally, and the longitudinal bending stiffness of the speed-variable stiffness-following longitudinal keel is correspondingly changed. The drive control circuit board is also connected with a manual button for manually controlling the forward and reverse rotation of the drive motor through a wire, and is used for adjusting the initial longitudinal bending rigidity of the longitudinal keel with the speed-dependent rigidity change, namely the preset longitudinal bending rigidity.
An electromagnet of the electromagnetic force transmission mechanism is arranged at the front end of the taper pipe and is fixed with the taper pipe; when the driving control circuit board of the electromagnetic force transmission mechanism supplies power to the electromagnet by means of the driving power supply, the driving control circuit board attracts or repels ferromagnetic substances on the large head end, namely the front end, of the speed-dependent stiffness conical rod, so that the speed-dependent stiffness conical rod is forced to move forwards or backwards longitudinally, and the longitudinal bending stiffness of the speed-dependent stiffness longitudinal keel is correspondingly changed.
The driving control circuit board comprises an amplitude sensor which is arranged on the longitudinal keel, the fin plate or the fin plate and detects the longitudinal bending deformation amplitude of the longitudinal keel, the fin plate or the fin plate, or comprises a frequency sensor which is arranged on the longitudinal keel, the fin plate or the fin plate and detects the longitudinal bending deformation frequency of the longitudinal keel, the fin plate or the fin plate, or comprises a speed measuring sensor which is arranged on the longitudinal keel, the fin plate or the fin plate and detects the swimming speed of the swimmer, or comprises a travel switch or an angular displacement sensor which is arranged near the toes of the swimmer and detects the action of the swimmer for hooking the toes or the toes, and in addition, the driving control circuit board also comprises a signal amplifying circuit which amplifies the electric signals of the sensor or. The driving control circuit board also typically includes a driving control chip. The tachometer sensor is typically a flow rate sensor or a GPS tachometer sensor. The travel switch or the angular displacement sensor is mounted in a bridging manner on the articulated arm at two sides of the articulated point of the miniature accelerator pedal, namely the articulated toe pedal, on the web plate or the fin plate which is articulated near the toes of the swimmer. The signal amplifying circuit is connected with the driving motor through a lead, and the driving control circuit board is also connected with a driving power supply through a lead.
When a swimmer simultaneously hooks toes or toes through two feet, a travel switch or an angular displacement sensor which is installed on an articulated arm on two sides of a hinged point of a miniature accelerator pedal hinged on a web plate or a fin plate in a bridging mode is triggered, after the acceleration of a signal amplification circuit, a driving control circuit board positively supplies power to a driving motor by means of a driving power supply, a driving mechanism positively works to drive a speed-dependent stiffness conical rod to longitudinally move backwards, the longitudinal bending stiffness of the speed-dependent stiffness longitudinal keel controlled by the two feet is simultaneously increased, meanwhile, the leg swinging frequency or the leg swinging speed is increased, and the swimmer can realize efficient acceleration; when a swimmer asynchronously hooks toes or toes through two feet, travel switches or angular displacement sensors on hinged arms on two sides of a hinged point of the miniature accelerator pedal are triggered to different degrees or different time, through signal amplification and force amplification of a middle link, the backward longitudinal movement degrees or time of the speed-dependent variable stiffness taper rod are different, the longitudinal bending stiffness increasing degrees of the speed-dependent variable stiffness longitudinal keel controlled by the two feet are different, and the swimmer can realize steering or direction fine adjustment correction in the swimming process.
The drive device is arranged in the fin plate or the fin plate.
And a lubricating medium for reducing the friction resistance between the taper pipe and the speed-dependent stiffness taper rod is filled between the taper pipe and the speed-dependent stiffness taper rod, and the lubricating medium comprises but is not limited to lubricating oil, lubricating grease or lubricating liquid.
When the material for manufacturing the flexible sleeve or the speed-dependent stiffness taper rod is replaced by a magnetorheological elastomer, or the content hidden in the taper tube is magnetorheological liquid, an electromagnet, a power supply and a pumping control circuit board or a driving control circuit board for controlling the electromagnet to act, which are communicated with each other through a lead, are also arranged in the web plate or the fin plate near the sleeve, or a permanent magnet is also arranged for adjusting the longitudinal bending stiffness of the speed-dependent stiffness longitudinal keel; when the material for manufacturing the flexible sleeve or the speed-dependent stiffness taper rod is replaced by an electrorheological elastomer or the contents hidden in the taper tube are electrorheological liquid, the positive electrode and the negative electrode of the circuit are respectively arranged in the front end and the rear end of the taper tube and on the flexible sleeve and the speed-dependent stiffness taper rod, the corresponding control circuit board communicated with the circuit and the corresponding power supply are connected with each other through the conducting wires and hidden in the web plate or the fin plate and are also used for adjusting the longitudinal bending stiffness of the speed-dependent stiffness longitudinal keel.
The utility model provides a novel along with quick rigidity swimming dive propulsion means, includes web board and longitudinal keel, or includes fin and longitudinal keel, its characterized in that: the novel variable-rate swimming diving propulsion tool comprises a single double-foot fin with two feet penetrating through one, double-foot double-fin with two feet penetrating through one respectively, and a bionic tail fin with two feet penetrating through one, also comprises a variable tail fin, a single fin of both feet, namely dolphin fin; the wrapping bag is a flexible wrapping bag or a rigid wrapping bag; when the material for manufacturing the wrapping bag is replaced by a magnetorheological elastomer, or the contents hidden in the cavity of the wrapping bag are magnetorheological liquid, electromagnets, power supplies and corresponding control circuit boards for controlling the electromagnets to act are also arranged in the web plate (101) or the fin plate near the wrapping bag, wherein the electromagnets, the power supplies and the corresponding control circuit boards are communicated with each other through leads, or permanent magnets are also arranged; when the material for manufacturing the wrapping bag is replaced by an electrorheological elastomer or the contents hidden in the cavity of the wrapping bag are electrorheological liquid, the wrapping bag or the cavity thereof is internally provided with a positive electrode and a negative electrode of a circuit, and a corresponding control circuit board communicated with the circuit and a corresponding power supply are mutually connected through leads and hidden in the web plate or the fin plate.
The longitudinal keels of the double-foot single fin are usually two left and right longitudinal keels which are respectively positioned on two longitudinal side edges of the left and right sides of the fin plate of the double-foot single fin, and the two longitudinal keels are usually the longitudinal keels with the rigidity changing along with the speed; the two longitudinal keels of the bionic tail fin are usually arranged on the left side and the right side of the fin plate of the bionic tail fin, and are also usually arranged on the two longitudinal sides of the fin plate of the bionic tail fin. The longitudinal keels of each fin of the two-footed double-fin are usually also two, left and right, respectively located on the two longitudinal sides of the left and right sides of each fin of the two-footed double-fin, and usually, the four longitudinal keels are also longitudinal keels with variable stiffness along with the speed. The longitudinal side edges are the outer edges of the longitudinal profile.
The variable tail fin comprises a main tail fin, a left tail fin and a right tail fin, wherein the left tail fin and the right tail fin are arranged on the left side and the right side of the main tail fin and are respectively hinged with the main tail fin; the swimmer can realize the function of adjusting the fin span width or the fin span area of the variable tail fin in the process of swinging the variable tail fin by synchronously rotating the ankle or asynchronously rotating the ankle, namely, the function of accelerating and decelerating or turning. The direction of travel of the swimmer is forward. The left tail fin comprises a left fin plate and a left longitudinal keel positioned on the longitudinal side edge of the left outer side of the left fin plate, the right tail fin comprises a right fin plate and a right longitudinal keel positioned on the longitudinal side edge of the right outer side of the right fin plate, and the left longitudinal keel and the right longitudinal keel are speed-dependent stiffness longitudinal keels under the common condition. The longitudinal side edges are the outer edges of the longitudinal profile.
Or, the variable tail fin comprises a tail fin fixing rod, a left tail fin and a right tail fin which are arranged on the left side and the right side of the tail fin fixing rod and are respectively hinged with the tail fin fixing rod, the left tail fin and the right tail fin are parallel to each other and are parallel to the water surface of the water area where the swimmer is located, the fin widening degree of the left tail fin and the right tail fin is variable or the fin spreading area is variable, the front end of the tail fin fixing rod is fixed between the legs or the feet of the swimmer, 2 variable fin pedals for fixing the left foot and the right foot of the swimmer are respectively arranged on the left side and the right side of the middle area of the tail fin fixing rod, the 2 variable fin pedals are respectively hinged with the tail fin fixing rod through respective hinge shafts, and the 2 variable fin pedals are respectively connected with the left tail fin and the right tail fin through respective linkage elements in a same side; the swimmer can realize the function of adjusting the fin span width or the fin span area of the variable tail fin in the process of swinging the variable tail fin by synchronously rotating the ankle or asynchronously rotating the ankle, namely, the function of accelerating and decelerating or turning. The direction of travel of the swimmer is forward. The left tail fin comprises a left fin plate and a left longitudinal keel positioned on the longitudinal side edge of the left outer side of the left fin plate, the right tail fin comprises a right fin plate and a right longitudinal keel positioned on the longitudinal side edge of the right outer side of the right fin plate, and the left longitudinal keel and the right longitudinal keel are speed-dependent stiffness longitudinal keels under the common condition. The longitudinal side edges are the outer edges of the longitudinal profile.
When a swimmer swings the novel speed-dependent stiffness swimming diving propulsion tool, the wrapping bag is extruded, bent and sheared in the vertical bending process, the volume is changed, the non-Newtonian fluid, the magnetorheological liquid or the electrorheological liquid in the wrapping bag is extruded, bent and sheared, the higher the leg swinging frequency or speed of the swimmer is, the higher the frequency or speed of the extrusion, bending and shearing of the non-Newtonian fluid, the magnetorheological liquid or the electrorheological liquid is, the more obvious the damping effect is, and the higher the leg swinging frequency or speed of the swimmer is, the higher the longitudinal bending stiffness of the speed-dependent stiffness longitudinal keel is; conversely, the longitudinal bending stiffness of the speed dependent stiffness longitudinal keel is less as the frequency or rate of leg swing of the swimmer is lower.
In the present invention, the material for manufacturing the flexible sleeve includes, but is not limited to, magnetorheological elastomer, electrorheological elastomer, rubber, plastic or polyurethane; the rigid sleeve is made of materials including but not limited to engineering plastics, glass fiber reinforced plastics, carbon fibers, thin-wall steel, aluminum alloy, titanium alloy, thin-wall copper alloy, ceramics, toughened glass, bamboo, wood or nylon, and is light and high in strength so as to meet the requirements of long-time and heavy-load work. The materials for manufacturing the speed-dependent stiffness taper rod comprise but are not limited to magnetorheological elastomers, electrorheological elastomers, engineering plastics, glass fiber reinforced plastics, carbon fibers, thin-wall steel, aluminum alloys, titanium alloys, thin-wall copper alloys, ceramics, toughened glass, bamboo, wood or nylon, and the taper rod is light and high in strength so as to meet the requirements of long-time and heavy-load work.
When the material for manufacturing the flexible sleeve or the speed-dependent stiffness taper rod is replaced by a magnetorheological elastomer, or the content hidden in the taper tube is magnetorheological liquid, an electromagnet, a power supply and a pumping control circuit board or a driving control circuit board for controlling the electromagnet to act, which are communicated with each other through a lead, are also arranged in the web plate or the fin plate near the sleeve, or a permanent magnet is also arranged.
When the permanent magnet in the previous paragraph is placed in a changed direction or the electromagnet is powered on, the longitudinal bending stiffness of the magnetorheological elastomer is changed, or the viscosity and the damping coefficient of the magnetorheological fluid are changed, and accordingly the longitudinal bending stiffness of the longitudinal keel with the variable-speed stiffness is changed.
When the material for manufacturing the flexible sleeve or the speed-dependent stiffness taper rod is replaced by an electrorheological elastomer or the contents hidden in the taper tube are electrorheological liquid, the positive pole and the negative pole of a circuit are uniformly arranged in the front end and the rear end of the taper tube and on the flexible sleeve and the speed-dependent stiffness taper rod, and a corresponding control circuit board communicated with the circuit and a corresponding power supply are connected with each other through leads and hidden in the web plate or the fin plate.
When the positive electrode and the negative electrode of the circuit in the previous paragraph are charged, the longitudinal bending stiffness of the electrorheological elastomer is changed, or the viscosity and the damping coefficient of the electrorheological fluid are changed, and accordingly the longitudinal bending stiffness of the longitudinal keel along with the speed-variable stiffness is changed.
In the invention, the material for manufacturing the flexible wrapping bag comprises but is not limited to magnetorheological elastomers, electrorheological elastomers, rubber, plastics or polyurethane; the rigid wrapping bag is made of materials including but not limited to engineering plastics, glass fiber reinforced plastics, carbon fibers, thin-walled steel, aluminum alloy, titanium alloy, thin-walled copper alloy, ceramics, toughened glass, bamboo, wood or nylon, and is light and high in strength so as to meet the requirements of long-time and heavy-load work.
When the material for manufacturing the wrapping bag is replaced by a magnetorheological elastomer, or the contents hidden in the cavity of the wrapping bag are magnetorheological liquid, an electromagnet, a power supply and a corresponding control circuit board for controlling the electromagnet to act, which are communicated with each other through a lead, are also placed in the web plate or the fin plate near the wrapping bag, or a permanent magnet is also placed.
When the permanent magnet in the previous paragraph is placed in a changed direction or the electromagnet is powered on, the longitudinal bending stiffness of the magnetorheological elastomer is changed, or the viscosity and the damping coefficient of the magnetorheological fluid are changed, and accordingly the longitudinal bending stiffness of the longitudinal keel with the variable-speed stiffness is changed.
When the material for manufacturing the wrapping bag is replaced by an electrorheological elastomer or the contents hidden in the cavity of the wrapping bag are electrorheological liquid, the wrapping bag or the cavity thereof is internally provided with a positive electrode and a negative electrode of a circuit, and a corresponding control circuit board communicated with the circuit and a corresponding power supply are mutually connected through leads and hidden in the web plate or the fin plate.
When the positive electrode and the negative electrode of the circuit in the previous paragraph are charged, the longitudinal bending stiffness of the electrorheological elastomer is changed, or the viscosity and the damping coefficient of the electrorheological fluid are changed, and accordingly the longitudinal bending stiffness of the longitudinal keel along with the speed-variable stiffness is changed.
The liquid in the invention is a conventional liquid, and the physical property or chemical property of the conventional liquid does not exceed the unconventional property or performance of the conventional liquid; the gas in the invention is a conventional gas, and the physical property or chemical property of the gas does not exceed the unconventional property or performance of the conventional gas; the fin expanse is similar to the span width of birds and the fin area is similar to the span area of birds.
The invention has the advantages that:
1. the novel variable-speed variable-rigidity swimming diving propulsion tool can enable a swimmer to sail water at a high speed and swim at a low speed at a high frequency and also can sail water at a low speed and swim at a low frequency, and the rigidity of the longitudinal keel of the novel variable-speed variable-rigidity swimming diving propulsion tool changes along with the change of the swimming speed or the change of the leg swinging frequency or the leg swinging speed of the swimmer.
2. The novel swimming diving propulsion tool with the variable stiffness along with the speed can effectively reduce the fatigue feeling generated when a swimmer continuously cruises for a long distance and a long time through variable speed cruises.
3. The novel speed-dependent variable-stiffness swimming diving propulsion tool comprising the damping cylinder assembly, the upper clamping piece and the lower clamping piece has the advantages of relatively simpler structure, relatively more reliable work and more obvious speed-dependent variable-stiffness characteristic of the speed-dependent variable-stiffness longitudinal keel, and is more convenient to adjust the preset longitudinal bending stiffness of the speed-dependent variable-stiffness longitudinal keel.
4. The novel speed-dependent variable stiffness swimming diving propulsion tool comprising the pumping assembly can realize the functions of high-efficiency acceleration and deceleration in the swimming process and also can realize the functions of steering or direction fine adjustment and correction in the swimming process.
5. The novel speed-dependent stiffness swimming diving propulsion tool comprising the driving device and the speed-dependent stiffness taper rod can realize the functions of high-efficiency acceleration and deceleration in the swimming process and the functions of steering or direction fine adjustment and correction in the swimming process.
6. The invention makes full use of the special physical characteristics of the non-Newtonian fluid, the magnetorheological fluid or the electrorheological fluid and the magnetorheological elastomer and the electrorheological elastomer, so that the mode of controlling the rigidity-dependent speed adjusting device and changing the longitudinal bending rigidity of the device becomes simpler, quicker and more effective.
7. The invention has the advantages of light structure, reliable work, simple corresponding manufacturing process and low cost, and is convenient for large-scale production and popularization and use.
Drawings
Fig. 1 is a simplified structural diagram of the novel variable rate swimming diving propulsion tool of the present invention comprising a fin plate or fin and left and right longitudinal keels.
In the figure: 1. a novel swimming diving propulsion tool with variable rigidity along with speed; 101. a web plate; 102. a longitudinal keel.
Wherein the left and right longitudinal keels 102 are both speed-dependent stiffness longitudinal keels.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1, the novel speed-dependent stiffness swimming and diving propulsion tool 1 mainly comprises a fin plate 101 and a left longitudinal keel and a right longitudinal keel 102, wherein the left longitudinal keel and the right longitudinal keel 102 are both speed-dependent stiffness longitudinal keels.
The specific embodiment of the invention is as follows:
the first embodiment is as follows: as shown in fig. 1, the novel variable-stiffness swimming diving propulsion tool 1 mainly comprises a fin plate 101 and a left longitudinal keel and a right longitudinal keel 102.
The novel speed-dependent stiffness swimming diving propulsion tool 1 shown in fig. 1 is a double-foot single-fin, the longitudinal keels 102 of which are two left and right, and are respectively located on two longitudinal sides of the left and right sides of a fin plate 101 of the double-foot single-fin, and the two longitudinal keels 102 are both speed-dependent stiffness longitudinal keels.
The speed dependent stiffness longitudinal keel described in the previous paragraph includes a full root sleeve and a hidden stiffness speed dependent adjustment means therein. The rigidity speed-dependent adjusting device consists of a hollow taper pipe in the sleeve and contents in the taper pipe. The content is one of five fluid media of liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological liquid, and the corresponding rigidity-dependent speed adjusting device is the combination of one of five fluid media of liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological liquid and one of the pumping assembly and the damping cylinder assembly; the content can also be a speed-variable stiffness conical rod which is coaxial with the conical pipe and can move longitudinally along the longitudinal axis of the conical pipe, and the corresponding stiffness-variable speed-variable adjusting device is a combination of the speed-variable stiffness conical rod and a driving device which drives the speed-variable stiffness conical rod to move longitudinally, and a lubricating medium is added.
When the novel speed-dependent stiffness swimming diving propulsion tool 1 is a combination of one of five fluid media comprising a damping cylinder assembly and a liquid, a gas, a non-newtonian fluid, a magnetorheological liquid or an electrorheological liquid, when the swimmer swings the legs, the volume of the taper pipe is changed in the process of bending up and down, the liquid, gas, non-Newtonian fluid, magneto-rheological liquid or electro-rheological liquid in the taper pipe is squeezed into or out of the damping cylinder, due to the existence of the damping holes, the higher the frequency or the speed of leg swinging of the swimmer is, the higher the flow rate of liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological fluid which is squeezed into or out of the damping cylinder is, the more obvious the damping effect is, in addition, the positive back pressure provided by the gas and the elastic element in the cylindrical cavity is, and the higher the frequency or the speed of leg swinging of the swimmer is, the higher the longitudinal bending rigidity of the longitudinal keel along with the speed-variable rigidity is; conversely, the longitudinal bending stiffness of the speed dependent stiffness longitudinal keel is less as the frequency or rate of leg swing of the swimmer is lower. The swimmer can conveniently adjust the preset longitudinal bending rigidity of the longitudinal keel with the speed-variable rigidity by adjusting the screwing-in depth of the screw plug at the front end of the columnar cavity.
The swimmer can beat water at a high speed and swim fast at a high frequency and beat water at a low speed and swim slowly at a low frequency, the bending rigidity of the longitudinal keel of the novel swimming diving propulsion tool 1 along with the variable speed changes along with the change of the swimming speed or the leg swinging frequency or the leg swinging speed of the swimmer, and the swimmer can effectively improve the proportion of useful work no matter what frequency the swimmer beats water, thereby improving the advancing efficiency and the swimming speed of swimming and diving to the maximum extent and saving physical strength, fully exerting the advancing potential of the swimmer in the water, and finally achieving the purpose of long-time, long-distance and continuous high-speed tour; the swimmer can effectively reduce the fatigue feeling generated when the swimmer continuously tours for a long distance and a long time through variable-speed tour.
The above-mentioned embodiments are only for convenience of illustration and are not intended to limit the invention in any way, and those skilled in the art will be able to make modifications and equivalents of the disclosed embodiments without departing from the technical scope of the invention.

Claims (10)

1. A novel speed-dependent variable stiffness swimming diving propulsion tool (1), comprising a fin plate (101) and a longitudinal keel (102), or comprising a fin plate and a longitudinal keel (102), characterized in that: the fin plate (101) and the longitudinal keel (102) on the longitudinal side of the fin plate or the longitudinal keel (102) in the middle of the fin plate (101) and the fin plate, at least one longitudinal keel with variable speed rigidity is provided with a variable speed rigidity longitudinal keel, the variable speed rigidity longitudinal keel comprises at least one section of sleeve and at least one speed rigidity adjusting device, the speed rigidity adjusting device comprises a conical pipe with hollow inner part of the sleeve and a content hidden in the conical pipe, the content hidden in the conical pipe is liquid, gas, non-Newtonian fluid, magneto-rheological liquid or electro-rheological liquid, or the content hidden in the conical pipe is a variable speed rigidity conical rod which has a same longitudinal axis with the conical pipe and can move longitudinally along the longitudinal axis of the conical pipe, the longitudinal axis of the conical pipe is curved or straight, the cross section of the inner cavity of the conical pipe vertical to the longitudinal axis of the conical pipe is non-circular or circular, the perimeter of the cross section of each conical tube inner cavity is gradually reduced from the front end of the traveling direction of the swimmer to the rear end of the traveling direction of the swimmer, the cross section of the outer contour of the speed-variable stiffness conical rod, which is vertical to the longitudinal axis of the speed-variable stiffness conical rod, is also non-circular or circular, the perimeter of the cross section of the outer contour of each speed-variable stiffness conical rod is also gradually reduced from the front end of the traveling direction of the swimmer to the rear end of the traveling direction of the swimmer, the cross section of the conical tube inner cavity at the same section is the same as the cross section of the outer contour of the speed-variable stiffness conical rod, the perimeter of the cross section of the conical tube inner cavity at the same section is larger than the perimeter of the cross section of the speed-variable stiffness conical rod, namely the cross section of the conical tube inner cavity at the same section is proportionally enlarged from the cross section of the outer contour of the speed-variable stiffness conical rod at, The double-fin structure comprises double-fin structures respectively penetrating through two feet, a bionic tail fin penetrating through two feet, a variable tail fin, a single-fin structure namely dolphin fin penetrating through two feet, and a flexible sleeve or a rigid sleeve.
2. A novel speed-dependent variable stiffness swim diving propulsion tool (1) according to claim 1, characterized in that: when the content hidden in the taper pipe is liquid, gas, non-Newtonian fluid, magneto-rheological fluid or electro-rheological fluid, namely the stiffness speed-dependent adjusting device comprises a taper pipe which is hollow inside the sleeve and one of five fluid media of liquid, gas, non-Newtonian fluid, magneto-rheological fluid or electro-rheological fluid, the stiffness speed-dependent adjusting device further comprises a pumping assembly or a damping cylinder assembly which is arranged at the big head end of the taper pipe, namely the front end of the traveling direction of the swimmer and has a common longitudinal axis with the taper pipe, the damping cylinder assembly is fixed with the taper pipe end to end or is integrated with the taper pipe towards the small head end of the taper pipe, namely the rear end of the traveling direction of the swimmer, the damping cylinder assembly is freely suspended towards the big head end of the taper pipe, namely the front end of the traveling direction of the swimmer, the damping cylinder assembly comprises a damping cylinder and a cylindrical cavity which has a common longitudinal axis with the damping cylinder and is connected with the taper pipe end to, the damping cylinder comprises a cylinder barrel and a piston, when the rear end of the damping cylinder is the cylinder barrel, the cylinder barrel is fixed with the inner wall of the taper pipe or is integrated with the taper pipe, the rear end of the cylinder barrel facing to the rear, namely the rear end in the advancing direction of the swimmer is provided with a damping hole for communicating the contents in the taper pipe with the inner cavity of the damping cylinder, the front end of the piston extending into the columnar cavity, when the rear end of the damping cylinder is the piston, the piston is fixed with the inner wall of the taper pipe or is integrated with the taper pipe, the rear end of the piston facing to the rear, namely the rear end in the advancing direction of the swimmer is provided with a damping hole for communicating the contents in the taper pipe with the inner cavity of the damping cylinder, the front end of the cylinder barrel extends into the columnar cavity, the columnar cavity in front of the damping cylinder is internally provided with gas or is provided with an elastic element which helps the extending piston or the cylinder barrel to, the cylindrical cavity, the damping cylinder and the sleeve are sequentially arranged from front to back along the longitudinal axis.
3. A novel speed-dependent variable stiffness swim diving propulsion tool (1) according to claim 2, characterized in that: an upper clamping piece and a lower clamping piece which are as long as the taper pipe are respectively arranged at the upper position and the lower position which are parallel to the upper surface and the lower surface of the web plate (101) or the fin plate and are tangent to or coincided with the inner wall of the taper pipe.
4. A novel speed-dependent variable stiffness swimming diving propulsion tool (1) according to claim 2 or 3, characterized in that: the pumping assembly is an assembly for pumping liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological liquid and comprises a delivery pump, a pumping power supply and a pumping control circuit board, wherein the delivery pump, the pumping power supply and the pumping control circuit board are connected through conducting wires, an output port of the delivery pump is directly communicated with a conical tube or is communicated with an input port of a cylinder or a hydraulic cylinder which is arranged between a large end of the conical tube and the delivery pump and has a common longitudinal axis with the conical tube, an input port of the delivery pump is connected with a storage cavity arranged in a web plate (101) or a fin plate, the storage cavity stores the liquid, gas, non-Newtonian fluid, magnetorheological liquid or electrorheological liquid, the cylinder or the hydraulic cylinder is fixed with the conical tube in an end-to-end manner or is integrated with the conical tube into a whole body towards the large end of the conical tube, namely the front end of the traveling direction of the swimmer, and the cylinder or the hydraulic cylinder extends into the conical tube towards the small end of the conical, the air cylinder or the hydraulic cylinder comprises a cylinder barrel and a piston, when the rear end of the air cylinder or the hydraulic cylinder is the piston, the cylinder barrel of the air cylinder or the hydraulic cylinder is fixed with the inner wall of a taper pipe or integrated with the taper pipe, the piston extends into the taper pipe and is connected with the speed-dependent stiffness taper rod which is coaxial with the taper pipe at one end towards the rear, namely the rear end of the swimmer in the advancing direction, the concrete mode of connection is ball joint, hinge joint or rigid fixation, the ball joint is spherical hinge joint, when the rear end of the air cylinder or the hydraulic cylinder is the cylinder barrel, the piston of the air cylinder or the hydraulic cylinder is fixed with the inner wall of the taper pipe or integrated with the taper pipe, the cylinder barrel extends into the taper pipe and is connected with the speed-dependent stiffness taper rod which is coaxial with the taper pipe at one end towards the rear, namely the swimmer in the advancing direction, the concrete mode of connection is ball joint, hinge joint or rigid fixation, the ball joint is spherical hinge joint, the, The sleeve pipe or the hydraulic cylinder and the sleeve pipe are arranged along the longitudinal axis from front to back in sequence.
5. A new variable rate swim-diving propulsion tool (1) according to claim 4, characterized in that: the pumping control circuit board comprises an amplitude sensor which is arranged on the longitudinal keel (102), the fin plate (101) or the fin plate and detects the longitudinal bending deformation amplitude of the fin plate, or comprises a frequency sensor which is arranged on the longitudinal keel (102), the fin plate (101) or the fin plate and detects the longitudinal bending deformation frequency of the fin plate, or comprises a speed measuring sensor which is arranged on the longitudinal keel (102), the fin plate (101) or the fin plate and detects the swimming speed of the swimmer, or comprises a travel switch or an angular displacement sensor which is arranged near the toes of the swimmer and detects the action of the swimmer for hooking the toes or toes, in addition, the pumping control circuit board also comprises a signal amplifying circuit which amplifies the electric signals of the sensors or the travel switch, and the travel switch or the angular displacement sensor is arranged on articulated arms which are crossly articulated on two sides of the articulated point of the miniature accelerator pedal on the fin plate (101) near the toes of the swimmer, the miniature accelerator pedal is a hinged toe pedal, the signal amplification circuit is connected with the delivery pump through a lead, and the pumping control circuit board is also connected with a pumping power supply through a lead.
6. A novel speed-dependent variable stiffness swim diving propulsion tool (1) according to claim 1, characterized in that: when the accommodating object hidden in the taper pipe is a speed-dependent stiffness taper rod which has a common longitudinal axis with the taper pipe, namely the stiffness speed-dependent adjusting device comprises a hollow taper pipe in the sleeve and a speed-dependent stiffness taper rod, the big head end of the taper pipe, namely the front end in the advancing direction of the swimmer, is also provided with a driving device for driving the speed-dependent stiffness taper rod to longitudinally move, the driving device comprises a driving motor, a driving power supply, a driving control circuit board and a driving mechanism, the driving power supply, the driving control circuit board and the driving motor are connected through conducting wires, the specific type of the driving mechanism comprises a lead screw transmission mechanism, a crank block mechanism, a gear rack mechanism, a cam mechanism, a multi-link mechanism, a lever mechanism, a synchronous belt transmission mechanism or a magnetic force transmission mechanism which converts the rotary motion of the driving motor into control of the speed-dependent stiffness taper rod to longitudinally move along the longitudinal axis of the taper pipe, the novel swimming pool further comprises an electromagnetic force transmission mechanism which controls the speed-variable stiffness taper rod to move longitudinally along the longitudinal axis of the taper pipe through electromagnetic attraction and repulsion forces, wherein an electromagnet, a drive control circuit board and a drive power supply of the electromagnetic force transmission mechanism are connected through conducting wires, the force input end of the drive mechanism is connected with a motor shaft of a drive motor, the force output end of the drive mechanism is connected with the speed-variable stiffness taper rod, the specific type of the speed-variable stiffness taper rod comprises a smooth surface taper rod with continuously changed cross section girth, a step surface taper rod with discontinuously changed cross section girth and a chain type taper rod with gradually reduced chain links, the step surface taper rod comprises a step surface type taper rod with fixed length and fixed shape and a telescopic pull rod antenna type taper rod with variable length, and the chain type taper rod gradually reduces the chain links of a chain from one end in front of the traveling direction of the swimmer to one end of the chain at the rear of, the articulated shaft between each chain link of the chain is vertical to the web plate or the fin plate, correspondingly, the bending rigidity of the speed-dependent stiffness conical rod in the direction parallel to the web plate or the fin plate is far smaller than that of the speed-dependent stiffness conical rod in the direction vertical to the web plate or the fin plate, and the driving device and the sleeve are arranged in sequence from front to back along the longitudinal axis.
7. A new variable rate swim-diving propulsion tool (1) according to claim 6, characterized in that: the driving control circuit board comprises an amplitude sensor which is arranged on the longitudinal keel (102), the fin plate (101) or the fin plate and detects the longitudinal bending deformation amplitude of the fin plate, or comprises a frequency sensor which is arranged on the longitudinal keel (102), the fin plate (101) or the fin plate and detects the longitudinal bending deformation frequency of the fin plate, or comprises a speed measuring sensor which is arranged on the longitudinal keel (102), the fin plate (101) or the fin plate and detects the swimming speed of the swimmer, or comprises a travel switch or an angular displacement sensor which is arranged near the toes of the swimmer and detects the action of the swimmer for hooking the toes or toes, in addition, the driving control circuit board also comprises a signal amplifying circuit which amplifies the electric signals of the sensor or the travel switch, and the travel switch or the angular displacement sensor is arranged on articulated arms at two sides of the articulated point of the miniature accelerator pedal on the fin plate (101) near the toes of the swimmer in a bridging manner, the miniature accelerator pedal is a hinged toe pedal, the signal amplification circuit is connected with the driving motor through a lead, and the driving control circuit board is also connected with a driving power supply through a lead.
8. A new variable rate swim-diving propulsion tool (1) according to claim 2 or 6, characterized in that: and a lubricating medium for reducing the friction resistance between the taper pipe and the speed-dependent stiffness taper rod is filled between the taper pipe and the speed-dependent stiffness taper rod, and the lubricating medium comprises lubricating oil, lubricating grease or lubricating liquid.
9. A new variable rate swim-diving propulsion tool (1) according to claim 2 or 6, characterized in that: when the material for manufacturing the flexible sleeve or the speed-dependent stiffness conical rod is replaced by the magnetorheological elastomer, or when the content hidden in the taper pipe is magnetorheological liquid, an electromagnet, a power supply and a pumping control circuit board or a driving control circuit board for controlling the electromagnet to act are also arranged in the web plate (101) or the fin plate near the sleeve pipe and are communicated with each other through a lead, or a permanent magnet is also arranged, when the material for manufacturing the flexible sleeve or the conical rod with the speed-dependent variable stiffness is replaced by an electrorheological elastomer, or the content hidden in the conical tube is electrorheological fluid, the inner part of the front end and the inner part of the rear end of the taper pipe, the flexible sleeve pipe and the speed-dependent rigidity-variable taper rod are respectively provided with a positive pole and a negative pole of a circuit, the corresponding control circuit board communicated with the circuit and the corresponding power supply are connected with each other through leads and hidden in the fin plate or the fin plate.
10. A novel speed-dependent variable stiffness swimming diving propulsion tool (1), comprising a fin plate (101) and a longitudinal keel (102), or comprising a fin plate and a longitudinal keel (102), characterized in that: the novel variable-rate swimming diving propulsion tool comprises a fin plate (101), a fin plate, a longitudinal keel (102) arranged on the longitudinal side edge of the fin plate (101) or the fin plate, or a longitudinal keel (102) arranged in the middle of the fin plate (101) or the fin plate, wherein at least one longitudinal keel (102) is variable-rate stiffness along with speed, the longitudinal keel along with variable-rate stiffness along with speed comprises at least one wrapping bag and at least one stiffness along with speed adjusting device, the wrapping bag and the stiffness along with speed adjusting device are arranged on the longitudinal axis of the longitudinal keel along with variable-rate stiffness, the stiffness along with speed adjusting device comprises a hollow cavity in the wrapping bag and a content hidden in the cavity, the content hidden in the cavity is non-Newtonian fluid, magnetorheological fluid or electrorheological fluid, the specific type of the novel variable-rate swimming diving propulsion tool (1) comprises a single double-foot web with one foot penetrating through one foot and double-foot double-webs respectively penetrating through one foot, also comprises a bionic tail fin with two feet penetrating through one, and a variable tail fin, wherein the double feet are single fins, namely dolphin fins, the wrapping bag is a flexible wrapping bag or a rigid wrapping bag, when the material for manufacturing the wrapping bag is replaced by the magnetorheological elastomer or the contents stored in the cavity of the wrapping bag are magnetorheological liquid, an electromagnet, a power supply and a corresponding control circuit board for controlling the electromagnet to act are also arranged in the web plate (101) or the fin plate near the wrapping bag and are communicated with each other through a lead, or a permanent magnet is also arranged, when the material for manufacturing the wrapping bag is replaced by the electrorheological elastomer, or when the contents in the cavity of the wrapping bag are electrorheological fluid, the wrapping bag or the cavity thereof is internally provided with a positive electrode and a negative electrode of a circuit, the corresponding control circuit board communicated with the circuit and the corresponding power supply are connected with each other through leads and hidden in the fin plate or the fin plate.
CN201810766439.3A 2018-06-20 2018-07-12 Novel swimming diving propulsion tool with variable speed and rigidity Withdrawn CN110711366A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201810766439.3A CN110711366A (en) 2018-07-12 2018-07-12 Novel swimming diving propulsion tool with variable speed and rigidity
PCT/CN2019/091442 WO2019242573A1 (en) 2018-06-20 2019-06-16 Foot fin having variable stiffness and adjustable propulsion power

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810766439.3A CN110711366A (en) 2018-07-12 2018-07-12 Novel swimming diving propulsion tool with variable speed and rigidity

Publications (1)

Publication Number Publication Date
CN110711366A true CN110711366A (en) 2020-01-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810766439.3A Withdrawn CN110711366A (en) 2018-06-20 2018-07-12 Novel swimming diving propulsion tool with variable speed and rigidity

Country Status (1)

Country Link
CN (1) CN110711366A (en)

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Application publication date: 20200121