CN104399245A - Breaststroke land training device - Google Patents
Breaststroke land training device Download PDFInfo
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- CN104399245A CN104399245A CN201410557752.8A CN201410557752A CN104399245A CN 104399245 A CN104399245 A CN 104399245A CN 201410557752 A CN201410557752 A CN 201410557752A CN 104399245 A CN104399245 A CN 104399245A
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Abstract
The invention provides a breaststroke land training device. The breaststroke land training device comprises a second hydraulic cylinder, an adjustable base, a fixed base, a sliding beam rod, a base plate, a communication soft tube, an adjustable throttle valve, a displayer, a first sliding block, a second sliding block, a third sliding block, two first hydraulic cylinders, two first connecting rods, two second connecting rods, two pedals and two stress sensors. According to the breaststroke land training device, specific air springs are adopted for providing imitation damp for athletes; double symmetric cranks share one sliding block mechanism; two symmetric congruent triangular structures are formed through the design; symmetric movement of the both legs is guaranteed; the standard breaststroke motion requirements are met; and the safety of a trainer is guaranteed when the breaststroke land training device is used. Three-layer type pedal plates creatively invented in the breaststroke land training device can guide footstep motions of the trainer according to changes of the force application directions of the legs; and synchronous and coordinated motions of the leg motions and the footstep motions can be achieved through the design that the footstep motions is guided by the leg motions. The invention further provides a breaststroke training method.
Description
Technical field
The present invention relates to swimming instruction apparatus, specifically a kind of breaststroke dry season training device.
Background technology
Along with the raising of quality of life, people rise to the attention rate straight line of health, take exercise and have become requisite free life project many people's every days.Swimming can improve cardiovascular system, improves lung capacity, strengthens skin blood circulation, builds up resistance, can also play the effect of defatting beauty simultaneously, become the sports events that the extensive masses like and praise highly.And breaststroke is because it is easy to learn, safety and comfort, become the first-selected stroke of many beginners.But this motion is the most difficult is starting, the fear of a lot of people to water cannot grasp the main points of action after allowing them descend water, and narrowly misses with this motion.Swimming land practice apparatus, that one can be helped beginner and held the essential of exercise on land, so not only can improve the learning efficiency of beginner and reduce beginner and to drown accident, also can reduce the operating pressure of trainer, and then make them be more student's Assistance And Instruction.Can also allow because anemofrigid cold with certain strength building if auxiliary, the reasons such as skin infection is injured can not descend the sportsman of water to keep the muscular training of some strength on land, prevent achievement from gliding.
Both legs are relative to both hands, more strong and powerful, are the main sources of breaststroke propulsive force, but simultaneously, both legs flexibility ratio is not as both hands, and the learning and mastering of leg action is more difficult.But current existing breaststroke exercising device is most only for hand motion, as simulator etc. is practised on Chinese invention patent CN200951304 breaststroke road, however unsatisfactory for leg action training effect.For breaststroke leg action training, also has a lot of room for improvement.
Summary of the invention
For the problems referred to above, main purpose of the present invention is to provide a kind of breaststroke dry season training device in order to help swimming beginner to correct breaststroke leg action, they can be had leg action before real lower water swimming and holds preferably, prevent unexpected generation.Coordinate the muscular training of some strength, help user is accustomed to the sense of having an effect when swimming simultaneously, and utilizes electronic instrument to carry out monitoring display to the condition of user.Breaststroke dry season training device of the present invention is equally applicable to the training demand of professional.
In order to obtain above object, first the present invention will solve two problems, one is double-crank totally one slide block mechanism using a kind of symmetry, the congruent triangles structure that this structure two is symmetrical, ensure that both legs symmetry is mobile, meet the standard operation requirement of breaststroke, also ensure trainer's security in use; Another adopts specific hydraulic spring grease cup to provide imitation damping for sportsman.Adopt the weight stack of definite value resistance and the spring of the resistance that is directly proportional to displacement relative to many similar designs, the resistance of hydraulic cylinder is directly proportional to speed, closer to water resistance during real swimming.This two problems is solved by following technical proposals: a kind of breaststroke training aids, comprise the second hydraulic cylinder 2, adjustable frames 3, firm banking 4, slip beam column 5, backing plate 6, be communicated with flexible pipe 13, adjustable choke valve 14, first slide block 7, second slide block 8, the 3rd slide block 9, two the first hydraulic cylinders, 1, two first connecting rods, 10, two second connecting rods 11, two pedals 12, slip beam column 5 by adjustable frames 3 and firm banking 4 in two supports; Two the first hydraulic cylinders, 1, two first connecting rods, 10, two second connecting rods, 11, two pedals 12 are symmetrical about slip beam column 5 all respectively; Be communicated with flexible pipe 13 and connect two the first hydraulic cylinders 1; First slide block 7, second slide block 8, the 3rd slide block 9 three slide blocks all can slide along slip beam column 5; First slide block 7 and the 3rd slide block 9 rigidly fix with backing plate 6, two first connecting rod 10 cylinder bodies that are each and first hydraulic cylinder 1 rigidly fix, two first connecting rods 10 are symmetrical with the 3rd slide block 9 chain connection, two second connecting rods 11 are symmetrical with the second slide block 8 chain connection, second connecting rod 11 chain connection of each and homonymy of the piston rod of two the first hydraulic cylinders 1, the second hydraulic cylinder 2 cylinder body and slip beam column 5 upper end are rigidly connected; Be communicated with flexible pipe 13 connects two the first hydraulic cylinders 1 enclosed cavity by adjustable choke valve 14, the piston area of two the first hydraulic cylinders 1 is equal, the flow of adjustable choke valve 14 is adjustable, and the flow of adjustable choke valve 14 balances damping response speed to two the first hydraulic cylinders 1 and is directly proportional.
In order to the use making user more comfortable breaststroke training aids of the present invention, and be applicable to each one custom, the length of the adjustable frames 3 of breaststroke training aids of the present invention is adjustable, and the length of adjustable frames 3 and the gradient of slip beam column 5 are linear relationship.
In order to the user making breaststroke training aids of the present invention can be applicable to different stature, particularly Chinese training requirement, the second connecting rod 11 of breaststroke training aids of the present invention is the adjustable T-shaped bar of length, be connected with interior bar by sleeve, cover tube length 22.25cm, respectively has a locating hole, the long 32.5cm of interior bar at 20cm, 16cm, 12cm place, have a locating hole to coordinate with sleeve at 30cm place, second connecting rod 11 adjustable length is respectively 42cm, 46cm, 50cm.
The progress of training is understood for the ease of user, breaststroke training aids of the present invention also comprises a display instrument 16 and two strain gauges 15, two strain gauges 15 are symmetrical about slip beam column 5, and are positioned over the side that two pedals 12 deviate from backing plate 6 respectively; Display instrument 16 is positioned over slip beam column 5 one end near adjustable frames 3.
In breaststroke training aids, a very important component is pedal, for this reason, breaststroke training aids of the present invention additionally provides a pedal 12, pedal 12 is made up of stressed plate 20, deflecting plate 21, base plate 22 3 parts, stressed plate 20 and sportsman foot rigidly fix, and the revolute pair that the vertical pedal direction of turning cylinder is added in stressed plate 20 and deflecting plate 21 forefoot position makes sole to swing freedom; Deflecting plate 21 and base plate 22 add the revolute pair of turning cylinder parallelipipedal horizontal direction, and limiting angle of rotation is 45 ~ 90 degree, when not by external applied load, forward 45 degree of positions to by contained spring effect; Base plate 22 vertical direction and second connecting rod 11 are rotationally connected; When trainer kicks one's legs, pedal is subject to active force backward, and the pedal second layer forwards 90 degree of positions clockwise to, and now both feet trigger; When trainer receives leg, pedal is no longer subject to active force backward, and under the action of the spring, 45 degree of positions got back to counterclockwise by pedal force plate 20, now double-legged exceptionally straight.
In order to user better uses breaststroke training aids of the present invention, present invention also offers a kind of training method using breaststroke training aids of the present invention, the concrete step that uses is as follows:
1) before using, user adjust the length of adjustable frames, the length of second connecting rod, hydraulic cylinder damping ratio, adjustable choke valve the parameter such as uninterrupted become the suitableeest size.Second connecting rod length is adjusted to 42cm gear by user's suggestion of below height 1.72m; Second connecting rod is adjusted to 46cm gear by user's suggestion of height 1.72m to 1.85m; Second connecting rod length is adjusted to 50cm gear by user's suggestion of more than height 185m.For to correct the beginner that stroke is main purpose, modulate minimum by hydraulic cylinder damping, throttle flow rate is adjusted to maximum; Have certain breaststroke basis, with strength building be main purpose user take the circumstances into consideration increase hydraulic cylinder damping turn down throttle flow rate than simultaneously.
2), after regulating, user lies prone on backing plate.Both feet slam pedal, and tibialis anterior both feet of having an effect trigger, and rectus femoris and vastus medialis are had an effect, and pedal and close up, complete thrust kick after extended legs with thighs.
3) then gastrocnemius shrinks both feet and sets level, and biceps muscle of thigh, musculus vastus lateralis and gluteus maximus both legs of having an effect bend backward both sides separately, complete and receive leg action.
4) step 2 is cycled to repeat to 3.
Beginner's first month can train 3 to 4 times weekly, each 2 to 3 groups, often organize strength building 5 to 10 minutes, have a rest 1 to 2 minute between group, second month works the training time taking the circumstances into consideration to increase set and often organize, but each increase group number suggestion does not exceed 1 group, and often the group increase time does not exceed 5 minutes.Adhere to that so training just can help user to be familiar with the breaststroke leg action of assurance standard for a long time, and play desirable strength building effect.
Compared with subaqua swimming, the larger and controllable of mechanical damping force rate water resistance, strength building effect is relatively better.But to knee joint in training process, the joint position loads such as ankle-joint are also unavoidable larger than water went swimming, therefore advise that user wears the protective device such as knee cap bandage, ankle guard band, Saving cortilage position in the training process.
Positive progressive effect of the present invention is: relative to existing training equipment, and breaststroke training aids provided by the invention has some innovative design following:
1, the present invention adopts specific hydraulic spring grease cup to provide imitation damping for sportsman.Adopt the weight stack of definite value resistance and the spring of the resistance that is directly proportional to displacement relative to many similar designs, the resistance of hydraulic cylinder is directly proportional to speed, closer to water resistance during real swimming.Meanwhile, the hydraulic system of the present invention's design can be had an effect, conveniently regulates by balanced both feet.
2, the present invention uses symmetrical double-crank totally one slide block mechanism, the congruent triangles structure that this structure two is symmetrical, ensures that both legs symmetry is mobile, meets the standard operation requirement of breaststroke, also ensure trainer's security in use.
3, the three-layer type pedal of the present invention's original creation can be had an effect according to leg the change in direction, and the person's of aiminging drill footwork, this synchronous coordination utilizing leg action to guide the design of footwork can realize leg action and footwork moves
4, the present invention has installed a series of sensor and electronic equipment, trainer is had an effect, speed, heart rate, calorie consume collection analysis display, user's training effect is more intuitively visual.
5, the corresponding linkage of development and Design of the present invention, can make corresponding adjustment during use, make the present invention be applicable to the trainer of height 1.60 to 2.00 meters of different building shape.
Accompanying drawing explanation
Fig. 1-Fig. 2 is the structural representation of breaststroke training aids leg training apparatus provided by the invention.
Fig. 3-Fig. 6 is breaststroke training aids workflow schematic diagram provided by the invention.
Fig. 7 is breaststroke training aids hydraulic damping system schematic diagram provided by the invention.
Fig. 8 is breaststroke training aids structural principle sketch provided by the invention.
Fig. 9-Figure 11 is breaststroke training aids physical dimension result of calculation schematic diagram provided by the invention.
Figure 12 is breaststroke training aids partial assembled scale diagrams provided by the invention.
Figure 13-Figure 14 is that pedal provided by the invention connects and motion mode schematic diagram.
Description of reference numerals is as follows:
First hydraulic cylinder: 1, second hydraulic cylinder: 2, adjustable frames: 3, firm banking: 4, slip beam column: 5, backing plate: 6, first slide block: 7, second slide block: 8, 3rd slide block: 9, first connecting rod: 10, second connecting rod: 11, pedal: 12, be communicated with flexible pipe: 13, adjustable choke valve: 14, strain gauge: 15, display instrument: 16, loop bar: 17, caging bolt: 18, T-shaped bar: 19, stressed plate: 20, deflecting plate: 21, base plate: 22, spacing draw-in groove: 23, limit stop post: 24, back-moving spring: 25.
Detailed description of the invention
Present pre-ferred embodiments is provided, to describe technical scheme of the present invention in detail below in conjunction with accompanying drawing.
The structural representation of apparatus when Fig. 1-Fig. 2 is breaststroke training aids leg training provided by the invention, Fig. 3-Fig. 6 is breaststroke training aids workflow schematic diagram provided by the invention, Fig. 7 is breaststroke training aids hydraulic damping system schematic diagram provided by the invention, and Fig. 8 is breaststroke training aids structural principle sketch provided by the invention.As shown in Figure 1, the present invention mainly comprises:
First hydraulic cylinder 1(two, to kick one's legs damping force for simulation), the second hydraulic cylinder 2(is for simulating leg lock damping force), adjustable frames 3, firm banking 4, slip beam column 5, backing plate 6, first slide block 7, second slide block 8, the 3rd slide block 9, first connecting rod 10(two), second connecting rod 11(two), pedal 12(two), be communicated with flexible pipe 13, adjustable choke valve 14, strain gauge 15, display instrument 16.
Viewed from structure, the present invention is made up of four parts: adjustable frames 3, firm banking 4, slip beam column 5 and the first slide block 7, second slide block 8, the 3rd slide block 9, backing plate formation base supporting construction; Second slide block 8, the 3rd slide block 9 form link gear with first connecting rod 10, second connecting rod 11, first hydraulic cylinder 1, realize foot's displacement movement track of breaststroke leg action; First hydraulic cylinder 1, second hydraulic cylinder 2, connection flexible pipe 13, adjustable choke valve 14, first connecting rod 10, second connecting rod 11, first slide block 7 form hydraulic damping system, for breaststroke leg strength training provides damping force; Pedal 12, strain gauge 15, display instrument 16 are functional part parts, support the realization of the functions such as cooperation, observation in breaststroke leg training.
As shown in Figure 1, slip beam column 5 is by adjustable frames 3 and firm banking 4 in two supports, and the length of adjustable frames 3 is longer, and the gradient of sliding beam 5 is larger, and difficulty is higher for the feature of base support structure of the present invention.Three slide blocks (the first slide block 7, second slide block 8, the 3rd slide block 9) can be prolonged slip beam column 5 and be slided, and the first slide block 7 and the 3rd slide block 9 rigidly fix with backing plate 6.This part is base support section of the present invention, is the rack section of other parts and associated components installation and the movement locus reference of each assembly.
Link gear of the present invention connects as shown in Figure 2, first connecting rod 10 and the first hydraulic cylinder 1 cylinder body rigidly fix, 3rd slide block 9 and first connecting rod 10 chain connection, the piston rod of the first hydraulic cylinder 1 and second connecting rod 11 chain connection, second connecting rod 11 and the second slide block 8 chain connection, second hydraulic cylinder 2 cylinder body and slip beam column 5 upper end are rigidly connected, pedal 12 and second connecting rod 11 upper end chain connection, link gear is arranged in base support structure, slip beam column 5 is shared with base support structure, first slide block 7, second slide block 8 and the 3rd slide block 9, major function is the foot's displacement movement track realizing breaststroke leg action, method is as described below.
When carrying out leg training, the prostrate handrail held with a firm grip on backing plate on backing plate of user, lie prone above the waist keeps geo-stationary with it on backing plate.Both feet step down on pedal, package fixing rope band.First, both legs are separately bending, imitate in water and prepare action of having an effect, and then, user's both legs are had an effect and kicked backward and leg lock, and imitating in water has an effect kicks one's legs, and now the first hydraulic cylinder 1 extends by contraction state, and slide block 9 is along slip beam column 5 forward slip (Fig. 3); After user's leg stretches completely, under effect of inertia, move forward above the waist, now user's both legs clamping of having an effect is closed up, and now the first hydraulic cylinder 1 stretches and is deployed into the longest, and second connecting rod 11 is by the spacing inward collapsible in outer end, both sides, slide block 9 continues along slip beam column 5 forward slip, the spacing draw-in groove 23 of the second hydraulic cylinder piston end contacts with the limit stop post 24 on the first slide block 7, and hydraulic cylinder 2 pressurized provides damping, (Fig. 4); User's both legs are closed to interior rear flank, user's both legs bend, imitate in water and receive leg action, now second connecting rod 11 and the first hydraulic cylinder 1 are positioned at same straight line first hydraulic cylinder 1, second hydraulic cylinder 2 and reply former length, slide block 9 slides backward along slip beam column 5, and the second hydraulic cylinder 2 is separated (Fig. 5) with the first slide block 7; User receives leg release simultaneously again, and the two knee of user separates to both sides, completes and receives leg action, and get back to preparation and to have an effect action initial position, complete and once circulate, now slide block 9 slides backward along slip beam column 5, and second connecting rod 11 is to inner rotary (Fig. 6) subsequently.Side track take the upper part of the body as referential is by one section of approximate evagination involute; One section of approximate circular arc; One section of near linear head and the tail transition is connected and surrounds.Opposite side is symmetrical about slip beam column 5 axis of orientation with it.
Hydraulic system of the present invention as shown in Figure 7, is arranged in base support structure, and with link gear connection function, and link gear shares the first hydraulic cylinder 1, first connecting rod 10, second connecting rod 11.The each symmetry that is rigidly connected with a connecting rod 10 of two the first hydraulic cylinders 1 is arranged on the both sides of slip beam column 5, and with connecting rod 11 chain connection of homonymy, connecting rod 10 and connecting rod 11 respectively with the 3rd slide block 9 and the second slide block 8 chain connection, its structural principle is as shown in Figure 8.Second hydraulic cylinder 2 cylinder body be fixed on adjustable frames with slip beam column parallel device, rigidly fix limit stop post 24 in the downside that the piston-rod end of the second hydraulic cylinder 2 rigidly fixes spacing draw-in groove 23, first slide block 7 and coordinate with spacing draw-in groove 23.The fluid chamber that adjustable choke valve 14 is communicated with flexible pipe 13 is connected two the first hydraulic cylinders 1 by two.First hydraulic cylinder 1 and the second hydraulic cylinder 2 can by regulating the size of cylinder mouth place restriction gear damping adjusting ratio.
Many existing body-building instruments utilizing hydraulic damping, as mountain-climbing machine, treadmills etc., operationally both feet are all that receipts one are put alternately, 1/2 cycle of phase of two pin.And the same periodic motion of breaststroke leg action both legs, according to the particularity of breaststroke campaign, hydraulic system of the present invention so designs, both legs pedal stretch time, be communicated with flexible pipe the cylinder body of the left and right sides first hydraulic cylinder is communicated with, ensure that both sides hydraulic pressure is equal, again because two-cylinder piston area equation, therefore ensure the damping force equal and opposite in direction that both feet are subject to, ensure that symmetry and the security of training.The simultaneously existence of choke valve ensure that to there will not be trainer's a certain human hair combing waste power too quickly, causes the phenomenon of opposite side Piston rebound, further ensures safety-type.When the first hydraulic cylinder 1 is by the longest close to moving to, first slide block 7 is along slip beam column 5 forward slip, limit stop post 24 contacts with spacing draw-in groove 23, spacing draw-in groove 23 is driven to travel forward, compress the second hydraulic cylinder 2 simultaneously, second hydraulic cylinder provides leg lock damping force and buffer plate momentum, reduces impact and prevents accident from occurring.
Second connecting rod 11 is the adjustable connecting rods of length, as shown in figure 12, second connecting rod 11 is by loop bar 17, caging bolt 18,19 3, T-shaped bar part composition, the long 22.25cm of loop bar 17, a locating hole is respectively had at 20cm, 16cm, 12cm place, the long 32.5cm of T-shaped bar, has a locating hole to coordinate with loop bar at 30cm place, and second connecting rod 11 adjustable length is respectively 42cm, 46cm, 50cm.Its physical dimension calculates theoretical according to as follows:
Principle of the invention sketch as shown in Figure 8.Its mid frame is slip beam column 5, A be the 3rd slide block 9, B is pedal installation site, and the overall length of C to be the second slide block 8, L2 be the first hydraulic cylinder and first connecting rod 10, L3 is the length of second connecting rod 11.Conveniently calculate, get user first as coordinate reference, namely keep A point motionless, be set to the origin of coordinates, parallel height direction is x-axis direction.Now need to carry out structural stress analysis to right side mechanism, symmetry is got in left side.Singly consider right side, can be considered the slider-crank mechanism of a mutation, in two connecting rods, L2 length needs change, but range can not more than the range of a hydraulic cylinder, L3 adjustable length, but after mixing up suitable length, should not change in use procedure.
In order to determine each rod member length, we have carried out overlooking shooting to 4 sportsman volunteers, and constant duration is adopted a little, as Fig. 9.Point coordinates substitution figure tri-B point coordinates position will be adopted, just can there emerged a the length variations scope of time point L2 bar and the angle excursion of angle α.Then to X, Y both direction coordinate value about time intercropping secondary-plug business, calculate distalmost end and be similar to acceleration direction, thus the value of angle of departure β should between 112 ° to 125 °.If get leg body length than being mean value 0.47, as calculated, if second connecting rod 11 length being 42cm, height can being met be about 1.60m to 1.77m user use within the scope of β reasonable value; If second connecting rod 11 length is 46cm, height can be met be about 1.70m to 1.88m user use within the scope of β reasonable value; If second connecting rod 11 length is 50cm, height can be met be about 1.81m to 2.00m user use within the scope of β reasonable value.
In order to realize above-mentioned functions, the present invention devises the second connecting rod 11 of adjustable length, second connecting rod is by loop bar 17, caging bolt 18,19 3, T-shaped bar part composition, loop bar 17 respectively there is a locating hole apart from 12cm, 16cm, 20cm tri-positions, end, T-shaped bar 19 has a locating hole apart from 30cm place, end, insert caging bolt 18 after selecting locating hole loop bar 17 adapting to length to align with the locating hole on T-shaped bar 19 before user uses to fix, such connecting rod 11 just can be selected in 42cm, 46cm, 50cm tri-length.Three kinds of adjustable lengths can ensure that between height 1.60m to 2.00m, most user can find comfortable adjusting position, trains, safely and effectively as Figure 12.
Functional part of the present invention is arranged on link gear, comprises detection part strain gauge 15, display instrument 16 and motion component pedal 12, and realization detection and foot motion coordinate two functions respectively.
Detection part comprises strain gauge 15 and display instrument 16, strain gauge 15, and two strain gauges 15 are symmetrical about slip beam column 5, and is positioned over the side that two pedals 12 deviate from backing plate 6 respectively.Display instrument 16 is positioned over slip beam column 5 one end near adjustable frames 3.Strain gauge 15 can record sportsman and to have an effect size, and being presented on display instrument 16 by corresponding electric equipment, is that athletic training effect is more intuitively visual.
Motion component is pedal 12, is made up of stressed plate 20, deflecting plate 21, base plate 22 3 parts, with second connecting rod 11 chain connection, can according to the synchronous variable inclinations of the link gear direction of motion, and realize cooperative motion, implementation method is as follows:
In breaststroke action, the fit system of leg action and footwork should be: when kicking one's legs, both feet trigger, and increases propulsive force, and during receipts leg, both feet are exceptionally straight, reduce resistance.Based on this foot motion mode.Pedal 12 is as shown in Figure 13-Figure 14, be made up of stressed plate 20, deflecting plate 21, base plate 22 3 parts, stressed plate 20 and sportsman foot rigidly fix, and the revolute pair that the vertical pedal direction of turning cylinder is added in stressed plate 20 and deflecting plate 21 forefoot position makes sole to swing freedom, as Figure 13; Deflecting plate 21 and base plate 22 add the revolute pair of turning cylinder parallelipipedal horizontal direction, and limiting angle of rotation is 45 ~ 90 degree, when not by external applied load, forward 45 degree of positions to, as Figure 14 by contained spring effect; Base plate 22 vertical direction and second connecting rod 11 are rotationally connected.When trainer kicks one's legs, pedal is subject to active force backward, and the pedal second layer forwards 90 degree of positions clockwise to, and now both feet trigger; When trainer receives leg, pedal is no longer subject to active force backward, and under the action of the spring, 45 degree of positions got back to counterclockwise by pedal force plate 20, now double-legged exceptionally straight.
Realize step of the present invention as follows:
1, the attainable goal verification of instrument, and properties is estimated, design mechanism principle sketch.
2, invited height to be respectively four sportsmen of 1.62m, 1.74m, 1.83m, 1.97m, climbed frog kick action as volt, carry out overlooking taking pictures.Member planar coordinate system, determines several constant duration foots coordinate points according to video pictures.
3, with matlab, geometrical analysis is carried out to the coordinate points of adopting, draw four athletic four step motion curve of approximation of different height, as Fig. 9, equal time is adopted the coordinate position a little obtained, as Figure 10.Be updated in mechanism principle sketch, calculate the geometric parameter of each components such as hydraulic cylinder, as Figure 11, as the important indicator of subsequent step.
4, carry out threedimensional model drafting with solidworks software, design various required apparatus, the geometry of the components such as hydraulic cylinder, slide block, base, slip beam column, linkage, pedal and backing plate, and Strength co-mputation.
5, the result of operation analysis, the components such as exploitation equipment hydraulic cylinder, slide block, base, slip beam column, linkage, pedal and backing plate carry out practical operation test, and carry out perfect to finished product, to achieve respective function.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; originally return and have various changes and modifications, these changes and improvements all fall in the claimed scope of the invention.
Claims (10)
1. a breaststroke training aids, comprise the second hydraulic cylinder (2), adjustable frames (3), firm banking (4), slip beam column (5), backing plate (6), be communicated with flexible pipe (13), adjustable choke valve (14), first slide block (7), second slide block (8), 3rd slide block (9), two the first hydraulic cylinders (1), two first connecting rods (10), two second connecting rods (11), two pedals (12), it is characterized in that: slip beam column (5) by adjustable frames (3) and firm banking (4) in two supports, two the first hydraulic cylinders (1), two first connecting rods (10), two second connecting rods (11), two pedals (12) are symmetrical about slip beam column (5) all respectively, be communicated with flexible pipe (13) and connect two the first hydraulic cylinders (1), first slide block (7), the second slide block (8), the 3rd slide block (9) three slide blocks all can slide along beam column (5), first slide block (7) and the 3rd slide block (9) rigidly fix with backing plate (6), two first connecting rod (10) cylinder bodies that are each and first hydraulic cylinder (1) rigidly fix, two first connecting rods (10) are symmetrical with the 3rd slide block (9) chain connection, two second connecting rods (11) are symmetrical with the second slide block (8) chain connection, second connecting rod (11) chain connection of each and homonymy of the piston rod of two the first hydraulic cylinders (1), the second hydraulic cylinder (2) cylinder body and beam column (5) upper end are rigidly connected, be communicated with flexible pipe (13) connects two the first hydraulic cylinders (1) enclosed cavity by adjustable choke valve (14), the piston area of two the first hydraulic cylinders (1) is equal, the flow of adjustable choke valve (14) is adjustable, and the flow of adjustable choke valve (14) balances damping response speed to two the first hydraulic cylinders (1) and is directly proportional.
2. breaststroke training aids as claimed in claim 1, it is characterized in that: the length of described adjustable frames (3) is adjustable, the length of adjustable frames (3) and the gradient of slip beam column (5) are linear relationship.
3. breaststroke training aids as claimed in claim 1, it is characterized in that: second connecting rod (11) is the adjustable connecting rod of length, by loop bar 17, caging bolt 18,19 3, T-shaped bar part composition, loop bar 17 respectively there is a locating hole apart from 12cm, 16cm, 20cm tri-positions, end, T-shaped bar 19 has a locating hole apart from 30cm place, end, insert caging bolt 18 after selecting locating hole loop bar 17 adapting to length to align with the locating hole on T-shaped bar 19 before user uses to fix, second connecting rod (11) adjustable length is respectively 42cm, 46cm, 50cm.
4. breaststroke training aids as claimed in claim 2, it is characterized in that: second connecting rod (11) is the adjustable connecting rod of length, by loop bar 17, caging bolt 18,19 3, T-shaped bar part composition, loop bar 17 respectively there is a locating hole apart from 12cm, 16cm, 20cm tri-positions, end, T-shaped bar 19 has a locating hole apart from 30cm place, end, insert caging bolt 18 after selecting locating hole loop bar 17 adapting to length to align with the locating hole on T-shaped bar 19 before user uses to fix, second connecting rod (11) adjustable length is respectively 42cm, 46cm, 50cm.
5. the breaststroke training aids as described in the arbitrary claim of claim 1,2,3,4, it is characterized in that: also comprise a display instrument (16) and two strain gauges (15), two strain gauges (15) are symmetrical about slip beam column (5), and are positioned over the side that two pedals (12) deviate from backing plate (6) respectively; Display instrument (16) is positioned over slip beam column (5) one end near adjustable frames (3).
6. the breaststroke training aids as described in claim as arbitrary in claim 1-4, it is characterized in that: pedal (12) is made up of stressed plate (20), deflecting plate (21), base plate (22) three part, stressed plate (20) and trainer foot rigidly fix, and stressed plate (20) adds the revolute pair in the vertical pedal direction of turning cylinder with deflecting plate (21) forefoot position; Deflecting plate (21) and base plate (22) add the revolute pair of turning cylinder parallelipipedal horizontal direction, and limiting angle of rotation is 45 ~ 90 degree, when not by external applied load, forward 45 degree of positions to by contained spring effect; (22 vertical directions and second connecting rod (11) are rotationally connected base plate; When trainer kicks one's legs, pedal is subject to active force backward, and the pedal second layer forwards 90 degree of positions clockwise to; When trainer receives leg, pedal is no longer subject to active force backward, and under the action of the spring, 45 degree of positions got back to counterclockwise by pedal force plate 20.
7. breaststroke training aids as claimed in claim 5, it is characterized in that: pedal (12) is made up of stressed plate (20), deflecting plate (21), base plate (22) three part, stressed plate (20) and trainer foot rigidly fix, and stressed plate (20) adds the revolute pair in the vertical pedal direction of turning cylinder with deflecting plate (21) forefoot position; Deflecting plate (21) and base plate (22) add the revolute pair of turning cylinder parallelipipedal horizontal direction, and limiting angle of rotation is 45 ~ 90 degree, when not by external applied load, forward 45 degree of positions to by contained spring effect; (22 vertical directions and second connecting rod (11) are rotationally connected base plate; When trainer kicks one's legs, pedal is subject to active force backward, and the pedal second layer forwards 90 degree of positions clockwise to; When trainer receives leg, pedal is no longer subject to active force backward, and under the action of the spring, 45 degree of positions got back to counterclockwise by pedal force plate 20.
8. a breaststroke training method, uses the breaststroke training aids as described in claim as arbitrary in claim 1-7, it is characterized in that: comprise the following steps:
1) before using, user adjust the length of adjustable frames, the length of second connecting rod, hydraulic cylinder damping ratio, adjustable choke valve the parameter such as uninterrupted become the suitableeest size user; Second connecting rod length is adjusted to 42cm gear by user's suggestion of below height 1.72m; Second connecting rod is adjusted to 46cm gear by user's suggestion of height 1.72m to 1.85m; Second connecting rod length is adjusted to 50cm gear by user's suggestion of more than height 185m; For to correct the beginner that stroke is main purpose, modulate minimum by hydraulic cylinder damping, throttle flow rate is adjusted to maximum; Having certain breaststroke basis, is that the user of main purpose increases hydraulic cylinder damping and turns down throttle flow rate than simultaneously with strength building;
2), after regulating, user lies prone on backing plate; Both feet slam pedal, and tibialis anterior both feet of having an effect trigger, and rectus femoris and vastus medialis are had an effect, and pedal and close up, complete thrust kick after extended legs with thighs;
3) gastrocnemius shrinks both feet and sets level, and biceps muscle of thigh, musculus vastus lateralis and gluteus maximus both legs of having an effect bend backward both sides separately, complete and receive leg action;
4) step 2 is cycled to repeat to 3.
9. breaststroke training method as claimed in claim 8, it is characterized in that, cycle of training arranges as follows:
User's first month trains 3 to 4 times weekly, each 2 to 3 groups, often organizes strength building 5 to 10 minutes, have a rest 1 to 2 minute between group, second month works the training time increasing set and often organize, but each increase group number does not exceed 1 group, and often the group increase time does not exceed 5 minutes.
10. breaststroke training method as claimed in claim 8 or 9, it is characterized in that, user wears the protective device such as knee cap bandage, ankle guard band in the training process, Saving cortilage position.
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| CN106621265A (en) * | 2016-12-09 | 2017-05-10 | 盐城工学院 | Freestyle swimming land training device and swimming training system |
| CN110292750A (en) * | 2019-07-31 | 2019-10-01 | 合肥工业大学 | Novel linkage mark time training apparatus |
| CN112043291A (en) * | 2020-09-02 | 2020-12-08 | 北京体育大学 | Human body multi-part muscle strength testing equipment and method thereof |
| WO2022246479A1 (en) * | 2021-05-19 | 2022-11-24 | Minh Thang Van | Breaststroke swimming exercise device |
| CN107284545B (en) * | 2017-08-02 | 2023-02-28 | 重庆科技学院 | Use method of bionic flea jumping auxiliary device |
| CN107458490B (en) * | 2017-08-02 | 2023-03-10 | 重庆科技学院 | Bionic flea jumping auxiliary device |
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