CN104399245B - Breaststroke dry season training device - Google Patents

Abstract

The invention provides a kind of breaststroke training aidss, including second hydraulic cylinder, adjustable frames, firm banking, slip beam column, backing plate, connection flexible pipe, scalable choke valve, display instrument, the first slide block, the second slide block, the 3rd slide block, two first hydraulic cylinders, two first connecting rods, two second connecting rods, two pedals, two strain gauges.The present invention adopts specific air spring to provide for athlete and imitates damping；Using symmetrical double-crank totally one slide block mechanism, it is ensured that both legs symmetrically move, the standard operation meeting breaststroke requires the symmetrical congruent triangles structure of this structure two, also ensures the safety when using for the trainer.The three-layer type pedal of present invention original creation can be had an effect according to leg the change in direction, the person's of aiminging drill footwork, this synchronous coordination motion that can realize leg action and footwork using the design that leg action guides footwork.Present invention simultaneously provides a set of breaststroke training method.

Description

Breaststroke dry season training device

Technical field

The present invention relates to swimming instruction apparatus, specifically a kind of breaststroke dry season training device.

Background technology

With the raising of quality of life, people ramp to healthy attention rate, and it is every that exercise has had become as many people Its requisite free life project.Swimming can improve cardiovascular system, improves vital capacity, strengthens cutaneous circulation, Build up resistance, the effect of defatting beauty can also be played simultaneously, become the sports events that the extensive masses like and praise highly.And the frog Swimming, because its easy to learn, safety and comfort, becomes the first-selected stroke of many abecedarians.But this motion is most difficult to be starting, a lot People allows them cannot grasp the main points of action after descending water to the fear of water, and narrowly misses with this motion.Swimming land practice Apparatus, is that one kind so can not only can improve the study of abecedarian to help abecedarian to hold the essential of exercise on land Efficiency simultaneously reduces abecedarian's drowned accident it is also possible to reduce the operating pressure of trainer, and then make them be more student Assistance And Instruction.If auxiliary can also allow because anemofrigid cold with certain strength building, the reason such as skin infection is injured The athlete that water can not be descended keeps the muscular training of some strength on land, prevents achievement from gliding.

Both legs are with respect to both hands, more strong and powerful, be the main source of breaststroke propulsive force, but simultaneously, both legs are flexible Degree is not so good as both hands, and the learning and mastering of leg action is more difficult.But, at present existing breaststroke exercising device mostly just for Exercise simulator etc. on hand motion, such as Chinese invention patent CN200951304 breaststroke road, but effect is trained for leg action Really unsatisfactory.For breaststroke leg action training, also a lot of rooms for improvement.

Content of the invention

For the problems referred to above, present invention is primarily targeted at providing one kind to help swimming beginner to correct breaststroke lower limb The breaststroke dry season training device of portion's action, they before really descending water swimming, leg action can be had and preferably holds, prevent from anticipating Outer generation.Coordinate the muscular training of some strength simultaneously, help the sense of having an effect during user custom swimming, and utilize electronic machine The condition of user is monitored showing.The breaststroke dry season training device of the present invention is equally applicable to the training of professional Demand.

In order to obtain object above, the present invention first has to solve two problems, and one is using a kind of symmetrical double-crank Totally one slide block mechanism, the symmetrical congruent triangles structure of this structure two, it is ensured that both legs symmetrically move, meets breaststroke Standard operation requires, and also ensures the safety when using for the trainer；Another be using specific hydraulic spring grease cup be athlete There is provided and imitate damping.The weight stack that be designed with definite value resistance similar with respect to many and the spring of the resistance that is directly proportional to displacement, The resistance of hydraulic cylinder is directly proportional to speed, closer to water resistance during real swimming.This two problems are by following technical sides Case is solving：A kind of breaststroke training aidss, including second hydraulic cylinder 2, adjustable frames 3, firm banking 4, slip beam column 5, pad Plate 6, connection flexible pipe 13, scalable choke valve 14, the first slide block 7, the second slide block 8,9, two first hydraulic cylinders 1 of the 3rd slide block, Two first connecting rods, 11, two pedals 12 of 10, two second connecting rods, slip beam column 5 by adjustable frames 3 and firm banking 4 in Two supports；1, two first connecting rods of two first hydraulic cylinders, 11, two pedals 12 of 10, two second connecting rods are all respectively about cunning Dynamic beam column 5 is symmetrical；Connection flexible pipe 13 connects two first hydraulic cylinders 1；First slide block 7, the second slide block 8, the 3rd slide block 9 three Individual slide block all can slide along slip beam column 5；First slide block 7 and the 3rd slide block 9 are rigidly fixed with backing plate 6, two first connecting rods 10 each cylinder bodies with a first hydraulic cylinder 1 rigidly fix, and two first connecting rods 10 are symmetrical with the 3rd slide block 9 hinge even Connect, two second connecting rods 11 symmetrical with the second slide block 8 chain connection, the piston rod of two first hydraulic cylinders 1 is each and homonymy Second connecting rod 11 chain connection, second hydraulic cylinder 2 cylinder body is rigidly connected with slip beam column 5 upper end；Connection flexible pipe 13 passes through can Adjust the closing chamber that choke valve 14 connects two first hydraulic cylinders 1, the piston area of two first hydraulic cylinders 1 is equal, scalable The flow of choke valve 14 is scalable, and the flow of scalable choke valve 14 and two first hydraulic cylinders 1 balance damping response speed It is directly proportional.

So that the breaststroke training aidss of the more comfortable use present invention of user, and it is suitable for each one custom, this The length of the adjustable frames 3 of bright breaststroke training aidss is adjustable, the inclination of the length of adjustable frames 3 and slip beam column 5 Spend for linear relationship.

So that the breaststroke training aidss of the present invention can be suitable for the user of different statures, particularly Chinese training will Ask, the second connecting rod 11 of the breaststroke training aidss of the present invention is the adjustable T-bar of length, connected by sleeve and interior bar, cover tube length 22.25cm, respectively has a location hole, the long 32.5cm of interior bar at 20cm, 16cm, 12cm, has a location hole and set at 30cm Cylinder cooperation, second connecting rod 11 adjustable length is respectively 42cm, 46cm, 50cm.

Understand the progress of training for the ease of user, the breaststroke training aidss of the present invention also include a display instrument 16 and Two strain gauges 15, two strain gauges 15 are symmetrical with regard to slip beam column 5, and are respectively placed in two pedals 12 Deviate from the side of backing plate 6；Display instrument 16 is positioned over slip beam column 5 one end near adjustable frames 3.

In breaststroke training aidss, a very important component is pedal, for this reason, the breaststroke training aidss of the present invention additionally provide One pedal 12, pedal 12 is made up of stressed plate 20, deflecting plate 21,22 3 parts of base plate, stressed plate 20 and athlete foot Rigidly fix, the rotation pair that stressed plate 20 adds rotary shaft vertical pedal direction with deflecting plate 21 forefoot position makes sole left Right swing is freely；Deflecting plate 21 adds the rotation pair of rotary shaft parallelipipedal horizontal direction with base plate 22, limit angle of rotation as 45 ~ 90 degree, when not being subject to external applied load, gone to 45 degree of positions by contained spring effect；Base plate 22 vertical direction and second connecting rod 11 rotate Connect；When trainer kicks one's legs, pedal is subject to rearward force, and the pedal second layer moves clockwise to 90 degree of positions, now both feet Trigger；When trainer receives lower limb, pedal is no longer influenced by rearward force, and under the action of the spring, pedal force plate 20 returns counterclockwise To 45 degree of positions, now double-legged exceptionally straight.

In order to user is preferably using the breaststroke training aidss of the present invention, present invention also offers a kind of use the frog of the present invention The training method of swimming training aidss, specifically used step is as follows：

1）Using front, user adjusts the length of the adjustable frames, length of second connecting rod, hydraulic cylinder damping ratio, adjustable The parameters such as the uninterrupted of section choke valve become the most suitable size.Second connecting rod length is adjusted by the user suggestion below height 1.72m For 42cm gear；Second connecting rod is adjusted to 46cm gear by the user suggestion of height 1.72m to 1.85m；More than height 185m Second connecting rod length is adjusted to 50cm gear by user suggestion.For to correct the abecedarian as main purpose for the stroke, by hydraulic pressure Cylinder damping modulation is minimum, and throttle flow rate is adjusted to maximum；There are certain breaststroke basis, the user with strength building as main purpose Take the circumstances into consideration increase hydraulic cylinder damping and turn down throttle flow rate than simultaneously.

2）After regulation finishes, user is lain prone on backing plate.Both feet slam pedal, and tibialis anterior both feet of having an effect trigger, and stock is straight Flesh and vastus medialises are had an effect, and pedal and close up after extended legs with thighs, complete thrust kick.

3）Then gastrocnemiuss shrink both feet set level, biceps femoris, vastus lateraliss and gluteus maximus have an effect both legs bending backward two Side separately, completes to receive lower limb action.

4）Circulating repetition step 2 is to 3.

Abecedarian's first month can be trained weekly 3 to 4 times, 2 to 3 group every time, every group of strength building 5 to 10 minutes, group Between rest 1 to 2 minute, second month rises the training time increasing set and every group as one sees fit, but each increase group number suggestion Do not exceed 1 group, every group of increase time does not exceed 5 minutes.Adhere to for a long time so training and user just can be helped to be familiar with holding The breaststroke leg action of standard, and play preferable strength building effect.

Compared with subaqua swimming, mechanical damping power is bigger than water resistance and controllable, and strength building effect is relatively more preferably. But to knee joint in training process, the joint position load such as ankle joint is also bigger than water went swimming unavoidably, it is therefore proposed that user Wear the protection devices such as knee cap bandage, ankle guard band, Saving cortilage position in the training process.

The positive effect of the present invention is：The breaststroke training aidss providing with respect to existing training equipment, the present invention There is some innovative design following：

1st, the present invention adopts specific hydraulic spring grease cup to provide for athlete and imitates damping.Similar it is designed with respect to many The weight stack of definite value resistance and the spring of the resistance that is directly proportional to displacement, the resistance of hydraulic cylinder is directly proportional to speed, closer to real Water resistance during swimming.Meanwhile, the hydraulic system of present invention design can equalize both feet and have an effect, conveniently adjusts.

2nd, the present invention uses symmetrical double-crank totally one slide block mechanism, two symmetrical congruent triangles of this structure It is ensured that both legs symmetrically move, the standard operation meeting breaststroke requires structure, also ensures the safety when using for the trainer.

3rd, the three-layer type pedal of present invention original creation can be had an effect according to leg the change in direction, and the person's of aiminging drill step moves Make, this synchronous coordination motion that can realize leg action and footwork using the design that leg action guides footwork

4th, the present invention is mounted with a series of sensors and electronic equipment, trainer is had an effect, speed, heart rate, calorie disappear Consumption collection analysises show, user training effect more intuitively visualize.

5th, present invention exploitation devises corresponding linkage, can make corresponding adjustment during use, so that the present invention is fitted Trainer for 1.60 to 2.00 meters of different building shape of height.

Brief description

Fig. 1-Fig. 2 is the structural representation of the breaststroke training aidss leg training apparatus that the present invention provides.

Fig. 3-Fig. 6 is the breaststroke training aidss workflow schematic diagram that the present invention provides.

Fig. 7 is the breaststroke training aidss hydraulic damping system schematic diagram that the present invention provides.

Fig. 8 is the breaststroke training aidss structural principle sketch that the present invention provides.

Fig. 9-Figure 11 is the breaststroke training aidss physical dimension result of calculation schematic diagram that the present invention provides.

Figure 12 is the breaststroke training aidss subassembly scale diagrams that the present invention provides.

Figure 13-Figure 14 is that the pedal that the present invention provides connects and motion mode schematic diagram.

Description of reference numerals is as follows：

First hydraulic cylinder：1st, second hydraulic cylinder：2nd, adjustable frames：3rd, firm banking：4th, slip beam column：5th, backing plate：6、 First slide block：7th, the second slide block：8th, the 3rd slide block：9th, first connecting rod：10th, second connecting rod：11st, pedal：12nd, connect flexible pipe：13、 Scalable choke valve：14th, strain gauge：15th, display instrument：16th, loop bar：17th, caging bolt：18th, T-bar：19th, stressed plate： 20th, deflecting plate：21st, base plate：22nd, spacing draw-in groove：23rd, limit stop post：24th, back-moving spring：25.

Specific embodiment

Provide present pre-ferred embodiments below in conjunction with the accompanying drawings, to describe technical scheme in detail.

Fig. 1-Fig. 2 is the structural representation of apparatus during the breaststroke training aidss leg training of present invention offer, and Fig. 3-Fig. 6 is this The breaststroke training aidss workflow schematic diagram that invention provides, Fig. 7 is that the breaststroke training aidss hydraulic damping system that the present invention provides shows It is intended to, Fig. 8 is the breaststroke training aidss structural principle sketch that the present invention provides.As shown in figure 1, the invention mainly comprises：

First hydraulic cylinder 1（Two, for simulating damping force of kicking one's legs）, second hydraulic cylinder 2（For simulating leg lock damping force）、 Adjustable frames 3, firm banking 4, slip beam column 5, backing plate 6, the first slide block 7, the second slide block 8, the 3rd slide block 9, first connecting rod 10（Two）, second connecting rod 11（Two）, pedal 12（Two）, connection flexible pipe 13, scalable choke valve 14, strain gauge 15th, display instrument 16.

In terms of 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 7th, the second slide block 8, the 3rd slide block 9, backing plate formation base supporting construction；Second slide block 8, the 3rd slide block 9 and first connecting rod 10, the Two connecting rods 11, first hydraulic cylinder 1 constitute link gear, realize foot's displacement movement track of breaststroke leg action；First hydraulic pressure Cylinder 1, second hydraulic cylinder 2, connection flexible pipe 13, scalable choke valve 14, first connecting rod 10, second connecting rod 11, the first slide block 7 are constituted Hydraulic damping system, provides damping force for breaststroke leg strength training；Pedal 12, strain gauge 15, display instrument 16 are functions Element portion, supports the realization of the functions such as cooperation in breaststroke leg training, observation.

The feature of base support structure of the present invention as shown in figure 1, slip beam column 5 by adjustable frames 3 and firm banking 4 in Two supports, the length of adjustable frames 3 is longer, and the gradient of sliding beam 5 is bigger, and difficulty is higher.Three slide blocks（First slide block 7th, the second slide block 8, the 3rd slide block 9）Slip beam column 5 can be prolonged slide, the first slide block 7 and the 3rd slide block 9 are solid with backing plate 6 rigidity Fixed.This part is the base support section of the present invention, is rack section and each assembly that other parts and associated components are installed Movement locus reference.

Link gear of the present invention connects as shown in Fig. 2 first connecting rod 10 is rigidly fixed with first hydraulic cylinder 1 cylinder body, and the 3rd Slide block 9 and first connecting rod 10 chain connection, the piston rod of first hydraulic cylinder 1 and second connecting rod 11 chain connection, second connecting rod 11 With the second slide block 8 chain connection, second hydraulic cylinder 2 cylinder body is rigidly connected with slip beam column 5 upper end, pedal 12 and second connecting rod 11 Upper end chain connection, link gear is arranged in base support structure, shares slip beam column 5, first with base support structure and slides Block 7, the second slide block 8 and the 3rd slide block 9, major function is to realize foot's displacement movement track of breaststroke leg action, and method is such as Lower described.

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 on backing plate with Holding geo-stationary.Both feet step down on pedal, package fixing rope band.First, both legs are bent apart, and imitate to prepare in water and have an effect Action, then, user both legs are had an effect and are kicked backward and leg lock, and imitating has an effect in water kicks one's legs, and now first hydraulic cylinder 1 is by contraction-like State starts to extend, and slide block 9 is along slip beam column 5 forward slip（Fig. 3）；After user lower limb stretches completely, under effect of inertia, upper half Body moves forward, and now user both legs clamping of having an effect is closed up, now first hydraulic cylinder 1 stretching be deployed into the longest, second Connecting rod 11 is continued along slip beam column 5 forward slip, second hydraulic cylinder piston end by the spacing inside gathering in both sides outer end, slide block 9 Spacing draw-in groove 23 contact with the limit stop post 24 on the first slide block 7, hydraulic cylinder 2 pressurized provide damping,（Fig. 4）；User is double After lower limb is closed to inner side, user both legs bend, and imitate and receive lower limb action in water, now second connecting rod 11 and first hydraulic cylinder 1 Reply former length positioned at same straight line first hydraulic cylinder 1, second hydraulic cylinder 2, slide block 9 slides backward along slip beam column 5, the second hydraulic pressure Cylinder 2 is separated with the first slide block 7（Fig. 5）；User receives lower limb release simultaneously again, and the double knee joint of user to both sides separately, completes to receive Lower limb action, returns to preparation and has an effect action initial position, complete one cycle, now slide block 9 slides backward along slip beam column 5, with Second connecting rod 11 outwards rotates afterwards（Fig. 6）.Side track is the evagination involute approximate by a section with the upper part of the body for referential；One The approximate circular arc of section；One section of near linear head and the tail transition is connected and surrounds.Opposite side is therewith with regard to slip beam column 5 axis of orientation pair Claim.

Present hydraulic system as shown in fig. 7, being arranged in base support structure, and link gear interconnection function, and connection Motivation structure shares first hydraulic cylinder 1, first connecting rod 10, second connecting rod 11.Two first hydraulic cylinders 1 are each with a connecting rod 10 rigidly Connected symmetrical dendrimer is arranged on the both sides of slip beam column 5, and connecting rod 11 chain connection with homonymy, and connecting rod 10 and connecting rod 11 are respectively with the Three slide blocks 9 and the second slide block 8 chain connection, its structural principle is as shown in Figure 8.Second hydraulic cylinder 2 cylinder body is fixed on scalable bottom With slip beam column parallel device on seat, rigidly fix spacing draw-in groove 23, the first slide block 7 in the piston-rod end of second hydraulic cylinder 2 Downside rigidly fix limit stop post 24 and coordinate with spacing draw-in groove 23.Scalable choke valve 14 is connected by two connection flexible pipes 13 The fluid chamber of two first hydraulic cylinders 1.First hydraulic cylinder 1 and second hydraulic cylinder 2 can be by adjusting restriction gear at cylinder mouth The size of damping adjusting ratio.

The body-building instrument of many existing utilization hydraulic dampings, such as mountain-climbing machine, treadmills etc., operationally both feet are all one Receive one and put alternately, 1/2 cycle of phase of two feet.And the same periodic movement of breaststroke leg action both legs, transported according to breaststroke Dynamic particularity, the hydraulic system of the present invention is so designed that, when both legs are pedaled and stretched, connection flexible pipe is by left and right sides first hydraulic cylinder Cylinder body connect it is ensured that both sides hydraulic pressure is equal, and because two-cylinder piston area equation, thereby ensure that the damping force that both feet are subject to Equal in magnitude it is ensured that training symmetry and safety.The presence of choke valve simultaneously ensure that to be not in that trainer is a certain Human hair combing waste power is too quickly, leads to the phenomenon of opposite side Piston rebound, further ensures safety.When first hydraulic cylinder 1 is approached Move to the longest, the first slide block 7 is contacted with spacing draw-in groove 23 along slip beam column 5 forward slip, limit stop post 24, drive spacing draw-in groove 23 travel forward, and compress second hydraulic cylinder 2 simultaneously, and second hydraulic cylinder provides leg lock damping force buffer plate momentum, reduces punching Hit and prevent accident from occurring.

Second connecting rod 11 is the adjustable connecting rod of length, and as shown in figure 12, second connecting rod 11 is by loop bar 17, caging bolt 18, T 19 3 parts of type bar form, and the long 22.25cm of loop bar 17 respectively has a location hole, T-bar is long at 20cm, 16cm, 12cm 32.5cm, has a location hole to coordinate with loop bar, second connecting rod 11 adjustable length is respectively 42cm, 46cm, 50cm at 30cm. It is as follows that its physical dimension calculates theoretical foundation：

Principle of the invention sketch is as shown in Figure 8.Wherein frame is slip beam column 5, and A is the 3rd slide block 9, and B is that pedal is installed Position, C is the second slide block 8, and L2 is the overall length of first hydraulic cylinder and first connecting rod 10, and L3 is the length of second connecting rod 11.In order to Convenient calculating, takes user upper half as coordinate reference, that is, keeps A point motionless, be set to zero, parallel height direction is x Direction of principal axis.Now need to carry out structural stress analysis to right side mechanism, left side takes symmetrically.Single consider on the right side of, can be considered one different The slider-crank mechanism becoming, in two connecting rods, L2 length needs to change, but becomes the change journey that journey not can exceed that a hydraulic cylinder, L3 length Degree is adjustable, but after mixing up suitable length, should not change during use.

In order to determine each rod length, we have carried out to 4 athlete volunteers overlooking shooting, and constant duration is adopted Point, such as Fig. 9.By sampling site coordinate substitution figure three B point coordinates position it is possible to must there emerged a the length change scope of time point L2 bar with The angle change scope of angle α.Then to X, Y both direction coordinate figure with regard to when catch cropping secondary-plug business, calculate distalmost end and approximately add Velocity attitude is it follows that the value of angle beta should be between 112 ° to 125 °.If taking lower limb body length than for meansigma methodss 0.47, warp Calculate, if second connecting rod 11 length is 42cm, can meet height about 1.60m to 1.77m user in the range of β reasonable value makes With；If second connecting rod 11 length is 46cm, can meet height about 1.70m to 1.88m user in the range of β reasonable value makes With；If second connecting rod 11 length is 50cm, can meet height about 1.81m to 2.00m user in the range of β reasonable value makes With.

In order to realize above-mentioned functions, the present invention devises the second connecting rod 11 of adjustable length, second connecting rod by loop bar 17, Caging bolt 18,19 3 parts of T-bar form, and loop bar 17 respectively has one to determine away from tri- positions of end 12cm, 16cm, 20cm Position hole, T-bar 19 has a location hole at the 30cm of end, and user uses the front location hole selecting adaptation length on loop bar 17 After aliging with the location hole on T-bar 19, insertion caging bolt 18 is fixing, and such connecting rod 11 just can be in 42cm, 46cm, 50cm Three length are selected.Three kinds of adjustable lengths can guarantee that between height 1.60m to 2.00m, most user can be looked for To comfortable adjusting position, safely and effectively train, such as Figure 12.

Functional part of the present invention is arranged on link gear, including detection part strain gauge 15, display instrument 16 and fortune Dynamic component pedal 12, realizes detection respectively and foot motion coordinates two functions.

Detection part includes strain gauge 15 and display instrument 16, strain gauge 15, two strain gauges 15 with regard to Slip beam column 5 is symmetrical, and is respectively placed in the side that two pedals 12 deviate from backing plate 6.Display instrument 16 is positioned over sliding beam Bar 5 is near one end of adjustable frames 3.Strain gauge 15 can record athlete and have an effect size, set by corresponding electrical equipment For being shown on display instrument 16, it is that athletic training effect more intuitively visualizes.

Motion component is pedal 12, is made up of stressed plate 20, deflecting plate 21,22 3 parts of base plate, with second even Bar 11 chain connection, can realize synergy movement, implementation method is as follows according to link gear direction of motion synchronization variable inclinations：

In breaststroke action, leg action with the fit system of footwork should be：When kicking one's legs, both feet trigger, and increase propulsion Power, when receiving lower limb, both feet are exceptionally straight, reduce resistance.Based on this foot motion mode.Pedal 12 as shown in Figure 13-Figure 14, by stress Plate 20, deflecting plate 21, base plate 22 3 part form, and stressed plate 20 rigidly fixes with athlete foot, stressed plate 20 and steering The rotation pair that rotary shaft vertical pedal direction is added in plate 21 forefoot position makes sole swing freedom, such as Figure 13；Turn to Plate 21 adds the rotation pair of rotary shaft parallelipipedal horizontal direction with base plate 22, limits angle of rotation as 45 ~ 90 degree, be not subject to outer load During lotus, gone to 45 degree of positions by contained spring effect, such as Figure 14；Base plate 22 vertical direction is rotated with second connecting rod 11 and is connected.When When trainer kicks one's legs, pedal is subject to rearward force, and the pedal second layer moves clockwise to 90 degree of positions, and now both feet trigger；When When trainer receives lower limb, pedal is no longer influenced by rearward force, and under the action of the spring, pedal force plate 20 returns to 45 degree of positions counterclockwise Put, now double-legged exceptionally straight.

The step realizing the present invention is as follows：

1st, the attainable goal verification of instrument, and properties are estimated, design mechanism principle sketch.

2nd, invite height to be respectively four athletes of 1.62m, 1.74m, 1.83m, 1.97m, climb frog kick as volt Action, carries out vertical view and takes pictures.Member planar coordinate system, determines several constant duration foots coordinate points according to video pictures.

3rd, with matlab, geometrical analysiss are carried out to the coordinate points adopted, draw four different athletic four steps of height Motion curve of approximation, such as Fig. 9, the coordinate position that time sampling site will be waited to obtain, such as Figure 10.It is updated in mechanism principle sketch, meter Calculate the geometric parameter of each component such as hydraulic cylinder, such as Figure 11, as the important indicator of subsequent step.

4th, carry out threedimensional model drafting with solidworks software, design various required apparatuses, hydraulic cylinder, slide block, bottom The geometry of the components such as seat, slip beam column, linkage, pedal and backing plate, and Strength co-mputation.

5th, the result of operation analysis, exploitation equipment hydraulic cylinder, slide block, base, slip beam column, linkage, pedal and pad The components such as plate carry out practical operation test, and finished product are carried out perfect, to achieve respective function.

Ultimate principle and principal character and the advantages of the present invention of the present invention have been shown and described above.The technology of the industry , it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description is originally for personnel The principle of invention, without departing from the spirit and scope of the present invention, originally returns and has various changes and modifications, these changes Both fall within scope of the claimed invention with improvement.

Claims (10)

1. a kind of breaststroke training aidss, including second hydraulic cylinder (2), adjustable frames (3), firm banking (4), slip beam column (5), Backing plate (6), connection flexible pipe (13), scalable choke valve (14), the first slide block (7), the second slide block (8), the 3rd slide block (9), two Individual first hydraulic cylinder (1), two first connecting rods (10), two second connecting rods (11), two pedals (12) it is characterised in that：Sliding Dynamic beam column (5) is by adjustable frames (3) and firm banking (4) in two supports；Two first hydraulic cylinders (1), two the first companies Bar (10), two second connecting rods (11), two pedals (12) are all symmetrical respectively about slip beam column (5)；Connection flexible pipe (13) two first hydraulic cylinders (1) are connected；First slide block (7), the second slide block (8), (9) three slide blocks of the 3rd slide block all can edge Beam column (5) slides；First slide block (7) and the 3rd slide block (9) are rigidly fixed with backing plate (6), two first connecting rods (10) each with one The cylinder body of individual first hydraulic cylinder (1) rigidly fixes, two first connecting rods (10) symmetrical with the 3rd slide block (9) chain connection, Two second connecting rods (11) symmetrical with the second slide block (8) chain connection, the piston rod of two first hydraulic cylinders (1) each with Second connecting rod (11) chain connection of side, second hydraulic cylinder (2) cylinder body is rigidly connected with beam column (5) upper end；Connection flexible pipe (13) Connect the closing chamber of two first hydraulic cylinders (1), the piston area of two first hydraulic cylinders (1) by scalable choke valve (14) Equal, the flow of scalable choke valve (14) is scalable, the flow of scalable choke valve (14) and two first hydraulic cylinders (1) Balance damping response speed is directly proportional.

2. breaststroke training aidss as claimed in claim 1 it is characterised in that：The length of described adjustable frames (3) is adjustable, The length of adjustable frames (3) is linear relationship with the gradient of slip beam column (5).

3. breaststroke training aidss as claimed in claim 1 it is characterised in that：Second connecting rod (11) is the adjustable connecting rod of length, by Loop bar (17), caging bolt (18), (19) three parts of T-bar form, away from end 12cm, 16cm, 20cm tri- on loop bar (17) Respectively there is a location hole individual position, and T-bar (19) has a location hole at the 30cm of end, and user uses front selection loop bar (17) after the upper location hole adapting to length is alignd with the location hole on T-bar (19), insertion caging bolt (18) is fixing, and second even Bar (11) adjustable length is respectively 42cm, 46cm, 50cm.

4. breaststroke training aidss as claimed in claim 2 it is characterised in that：Second connecting rod (11) is the adjustable connecting rod of length, by Loop bar (17), caging bolt (18), (19) three parts of T-bar form, away from end 12cm, 16cm, 20cm tri- on loop bar (17) Respectively there is a location hole individual position, and T-bar (19) has a location hole at the 30cm of end, and user uses front selection loop bar (17) after the upper location hole adapting to length is alignd with the location hole on T-bar (19), insertion caging bolt (18) is fixing, and second even Bar (11) adjustable length is respectively 42cm, 46cm, 50cm.

5. the breaststroke training aidss as described in claim 1,2,3,4 any claim it is characterised in that：Also include a display instrument (16) and two strain gauges (15), two strain gauges (15) are symmetrical with regard to slip beam column (5), and respectively It is positioned over the side that two pedals (12) deviate from backing plate (6)；Display instrument (16) is positioned over slip beam column (5) near adjustable frames (3) one end.

6. the breaststroke training aidss as described in claim 1-4 any claim it is characterised in that：Pedal (12) is by stressed plate (20), deflecting plate (21), (22) three parts of base plate form, and stressed plate (20) and trainer foot rigidly fix, stressed plate (20) add the rotation pair in rotary shaft vertical pedal direction with deflecting plate (21) forefoot position；Deflecting plate (21) and base plate (22) Add the rotation pair of rotary shaft parallelipipedal horizontal direction, limit angle of rotation as 45～90 degree, when not being subject to external applied load, by inside Spring effect goes to 45 degree of positions；Base plate (22) vertical direction is rotated with second connecting rod (11) and is connected；When trainer kicks one's legs, step on Plate (12) is subject to rearward force, and the stressed plate (20) of pedal (12) moves clockwise to 90 degree of positions；When trainer receives lower limb, step on Plate (12) is no longer influenced by rearward force, and under the action of the spring, the stressed plate (20) of pedal (12) returns to 45 degree of positions counterclockwise.

7. breaststroke training aidss as claimed in claim 5 it is characterised in that：Pedal (12) by stressed plate (20), deflecting plate (21), (22) three parts of base plate form, and stressed plate (20) and trainer foot rigidly fix, before stressed plate (20) and deflecting plate (21) The rotation pair in rotary shaft vertical pedal direction is added in sole position；Deflecting plate (21) adds rotary shaft parallelipipedal with base plate (22) The rotation pair of horizontal direction, limits angle of rotation as 45～90 degree, when not being subject to external applied load, is gone to 45 degree of positions by contained spring effect Put；Base plate (22) vertical direction is rotated with second connecting rod (11) and is connected；When trainer kicks one's legs, pedal is subject to rearward force, The stressed plate (20) of pedal (12) moves clockwise to 90 degree of positions；When trainer receives lower limb, pedal (12) is no longer influenced by making backward Firmly, under the action of the spring, the stressed plate (20) of pedal (12) returns to 45 degree of positions counterclockwise.

8. a kind of breaststroke training method, using the breaststroke training aidss as described in claim 1-7 any claim, its feature exists In：Comprise the following steps：

1) use front, user adjust the length of adjustable frames, the length of second connecting rod, hydraulic cylinder damping ratio, adjustable successively The parameter of the uninterrupted of stream valve becomes the most suitable size user；User below height 1.72m is advised second connecting rod length It is adjusted to 42cm gear；Second connecting rod is adjusted to 46cm gear by the user suggestion of height 1.72m to 1.85m；More than height 185m User suggestion second connecting rod length is adjusted to 50cm gear；For to correct the abecedarian as main purpose for the stroke, by liquid Cylinder pressure damping ratio is adjusted to minimum, and throttle flow rate is adjusted to maximum；There are certain breaststroke basis, making with strength building as main purpose User increases hydraulic cylinder damping and turns down throttle flow rate than simultaneously；

2), after regulation finishes, user is lain prone on backing plate；Both feet slam pedal, and tibialis anterior both feet of having an effect trigger, rectus femoris and Vastus medialises are had an effect, and pedal and close up after extended legs with thighs, complete thrust kick；

3) gastrocnemiuss are shunk both feet and are set level, and biceps femoris, vastus lateraliss and gluteus maximus have an effect the backward both sides of both legs bending separately, complete Become to receive lower limb action；

4) circulating repetition step 2 is to 3.

9. breaststroke training method as claimed in claim 8 is it is characterised in that arrange as follows cycle of training：

User first month is trained weekly 3 to 4 times, 2 to 3 group every time, every group of strength building 5 to 10 minutes, between group rest 1 to 2 minutes, second month rose the training time increasing set and every group, but each increase group number does not exceed 1 group, every group of increasing 5 minutes are not exceeded between the added-time.

10. breaststroke training method as claimed in claim 8 or 9 is it is characterised in that user wears knee cap in the training process Band, the protection device of ankle guard band, Saving cortilage position.