CN208448580U - Land breaststroke learning machine and increase training time device - Google Patents

Abstract

The utility model discloses a kind of land breaststroke learning machine and increases training time device, wherein land breaststroke learning machine includes upper limb motion mechanism, torso exercise mechanism and lower extremity movement mechanism；Upper limb motion mechanism includes upper limb track, sliding block assembly of striking, motor inductive switch and lower limb position-arresting device inductive switch；Sliding block assembly strike along upper limb tracks travel to state initial position of striking, motor inductive switch issues signal and controls torso exercise mechanism action；It slides to upper limb and receives arm position, lower limb position-arresting device inductive switch issues signal control lower extremity movement mechanism and completes a thrust kick；Lower extremity movement mechanism includes lower limb track, sliding block assembly of kicking one's legs, foot captive plate, the first connector and lower limb position-arresting device；Kick one's legs sliding block assembly along lower limb tracks travel to lower limb receive leg position, lower limb position-arresting device receive lower limb position-arresting device inductive switch signal, by or prevent slide.The standard and the harmony of actuation time of the utility model guarantee breaststroke action.

Description

Land breaststroke learning machine and increase training time device

Technical field

The utility model relates to fitness equipment technical field more particularly to a kind of land breaststroke learning machine and increase the training time Device.

Background technique

Breaststroke is the study project of swimming beginner.Standard and movement when artificial teaching breaststroke, due to study movement The harmony of time is difficult to grasp completely in a short time, and water of choking is particularly easy to during study, extends the learning time of beginner, Or beginner's feared state of mind is caused, abandon study swimming, time-consuming accident.

In addition to breaststroke of manually imparting knowledge to students, a kind of device for exercising swim machine of the prior art is land pillar connection equipped with safety The hanging basket of band, hanging basket are fixed on the chest of people, people are sling suspension in water, various strokes are simulated in trick in water.It should Although the shortcomings that technical solution is to ensure that people is unlikely to water of choking, the standard correctness of trick swimming position cannot be fast Speed feeds back to oneself, to can not effectively and rapidly be improved as artificial teaching.

Another breaststroke learning machine of the prior art, including dressing portion and power conversion system, the dressing portion will be described Power conversion system is fixed on the user's body, and user receives leg movement and convert rotary power for mechanical energy by kicking one's legs, and drives The propeller ined succession in dynamic dressing portion uses onward impulse to user.What the technical solution was only connect with dynamical system determines Position pin limitation, which is kicked one's legs, receives leg movement and reaches the swimming position of guidance Normalization rule person, and still, the technical solution is only to kicking one's legs The correction of leg movement is received, beginner receives between leg movement in the harmony of actuation time in semi-girder and arm motion with kicking one's legs, and The scheme not solved.

Utility model content

The utility model provides a kind of land breaststroke learning machine, and solving existing breaststroke simulation training system not can guarantee the frog The standard and the harmony problem of actuation time of swimming technical movements.

The utility model mention the technical solution adopted is that: land breaststroke learning machine, including upper limb motion mechanism, torso exercise Mechanism and lower extremity movement mechanism, which is characterized in that

Upper limb motion mechanism, including upper limb track, sliding block assembly of striking, motor inductive switch and the induction of lower limb position-arresting device are opened It closes；Sliding block assembly strike along upper limb tracks travel, strikes state original position in upper limb, upper limb track setting motor, which incudes, to be opened It closes, controls the torso exercise mechanism action；It is received at arm position in upper limb, upper limb track setting lower limb position-arresting device, which incudes, to be opened It closes, control lower extremity movement mechanism can complete primary complete receipts leg thrust kick；Wherein, upper limb is struck state start bit set The outside of right-hand man when upper limb and lower limb stretch into a line；

Lower extremity movement mechanism, including lower limb track, sliding block assembly of kicking one's legs, foot captive plate, the first connector and lower limb stop Position device；Sliding block assembly kick one's legs along lower limb tracks travel, the first connector is flexibly connected kick one's legs sliding block assembly and foot captive plate；? Lower limb are received at leg position, and lower limb position-arresting device is arranged in lower limb track, and lower limb position-arresting device receives the signal of lower limb position-arresting device inductive switch, By or prevent kick one's legs sliding block assembly sliding, for avoiding the receipts leg on uncomfortable opportunity from acting.

When this programme is acted by motor inductive switch and lower limb position-arresting device inductive switch come specification upper limb and lower limb breaststroke Between harmony, by upper limb track and lower limb track come the standard type of specification breaststroke action.

As an improvement of the above scheme, the sliding block assembly of striking includes several wheels, slider plate, cross axle and stirs Plate, the upper limb track are U-type groove；

A pair of spaced second connector of slider plate upper face setting, a pair of of the interval of lower face setting for stirring plate are set The third connector set, cross axle extend through the axis hole on the second connector and third connector to be rotatablely connected slider plate With stir plate, the lower face of slider plate is arranged in several wheels, runs in the U-type groove of the upper limb track.The choosing of cross axle Select be conveniently strike sliding block assembly on arc track it is multi-direction stir plate and stir strike conducive to wrist rotation.

Preferably, the wheel is universal wheel or multi-directional ball.

As an improvement of the above scheme, the sliding block assembly of kicking one's legs includes the parallel arrangement of guide wheel of a pair of same axis, one To guide wheel connecting plate, axis, the fitted lining mat piece with bearing mounting base and bearing；

Upper shaft hole and lower shaft hole are set on guide wheel connecting plate, and the pair of guide wheel connecting plate is individually positioned in the pair of same The two sides of the parallel arrangement of guide wheel of one axis, first axle and the second axis pass through the upper shaft hole of guide wheel connecting plate and respectively close to guide wheels The central shaft hole of the guide wheel of connecting plate is attached；It is placed in the fitted lining mat piece between the pair of guide wheel connecting plate and is arranged One through-hole, third axis are fastenedly connected by the lower shaft hole and the through-hole of the pair of guide wheel connecting plate；

The bearing is installed on the fitted lining mat piece, bearing connection first connection by the bearing mounting base The other end of part one end, first connector connects the foot captive plate；The bearing release kicks one's legs sliding block assembly under The rotation generated in sliding in limb track, and the difference in rotation generated between sliding block assembly and foot captive plate of kicking one's legs.

The lower limb track is the two-orbit matched with the guide wheel；

Lifting portion is arranged between the two-orbit makes the foot captive plate described vacantly to lift lower limb track The moved beneath of lower limb track.

Preferably, first connector is wirerope.Wirerope has certain hardness that the foot can be supported to be tethered at Plate also has certain toughness to sprain one's foot when preventing thrust kick.

As an improvement of the above scheme, the torso exercise mechanism, including support platen, hinge, tilting plate, motor, partially Heart wheel and the 4th connector, support platen are fixed on rack, and support platen is connected by a hinge one end of tilting plate, tilting plate The other end connect with eccentric wheel by the 4th connector, the signal that motor receives the motor inductive switch drives bias Wheel drives tilting plate up and down, and simulation breaststroke trunk is acted in the ventilation of water surface dipping and heaving.

Or, as an improvement of the above scheme, the another embodiment of the torso exercise mechanism comprising motor is stretched Contracting bar and trunk support plate；Three is linked in sequence, and motor driven telescopic rod drives trunk support plate up and down, simulates breaststroke body Do the ventilation movement in water surface dipping and heaving.

Preferably, the sliding block assembly of striking slides into upper limb and stretches according to upper limb arm stroke from upper limb state initial position of striking During straight position, eccentric wheel described in the motor driven is rotated by 360 ° once, drives tilting plate sequentially from down to height, then from Up to harmonic motion is primary, the motor stopping.This programme cooperates breaststroke arm stroke by motor driven eccentric wheel, described to strike Sliding block assembly upper limb strike state initial position triggering motor inductive switch, so that motor is started running, according to upper limb arm stroke During state initial position to upper limb straight position strike from upper limb, eccentric wheel drives tilting plate or trunk support plate upward Movement, simulation arm are struck backward in water to generating thrust, and mouth is lifted on trunk drive head and is exposed the surface air-breathing, so Eccentric wheel belt moves tilting plate afterwards or trunk support plate moves downward, and simulation ventilation occiput slowly lowly connects to hindbrain skin with the water surface The degree of touching starts to exhale when head is as low as mouth to the water surface.Eccentric wheel described in the process is rotated by 360 ° once, drives tilting plate suitable Sequence is from down to height, then primary, the motor stopping from up to harmonic motion, and waiting is struck sliding block assembly triggering arm stroke next time.

As an improvement of the above scheme, the motor is speed regulating motor.This programme according to interpersonal difference, and Breaststroke movement speed adjusts the speed motor, to adapt to the harmony of ventilation movement Yu arm stroke time.

As an improvement of the above scheme, the trade shape of the upper limb track and the lower limb track is built according to three-dimensional software The wrist of vertical breaststroke and the motion trajectory model of ankle, determine, trade shape meets ergonomic by motion simulation and experiment It learns to more accurate to the correction of beginner's posture standard.

The utility model also provides a kind of increase training time device, including being lifted on above the torso exercise mechanism Eccentric wheel and motor, the eccentric wheel are connect by the 5th connector with the helmet of trainer institute band, motor driven eccentric wheel and The fluctuating of the torso exercise mechanism rotates synchronously, to reduce pressure of trainer's chest in the torso exercise mechanism.

In the technical program, in land using mechanical equipment simulation breaststroke movement, lack in water to torso support Buoyancy is moved upwards in the torso exercise mechanism, in particular, moving upwards in the tilting plate or the trunk support plate While, drive trunk to move upwards, head raises up simultaneously to raising up using the chest of people as support force, at this point, chest is held It is raised up the kinetic energy and head gravity that support force, the tilting plate or the trunk support plate move upwards by head, to make The chest of people generates sense of discomfort and shortens the time for adhering to continuously training.This programme is by being lifted in the torso exercise mechanism The eccentric wheel of side drives the helmet of trainer institute band, the power on upward lifting head is generated, to reduce trainer's chest in institute The pressure in torso exercise mechanism is stated, and then increases the time of trainer's continuous training.

Further, voice device is also set up, trainer's air-breathing and expiration movement are prompted.

Detailed description of the invention

Fig. 1 is the overall structure schematic top plan view of land breaststroke learning machine provided by the utility model；

Fig. 2 is the structural schematic diagram of sliding block assembly of striking in Fig. 1；

Fig. 3 is the structural schematic diagram of upper limb track in Fig. 1；

Fig. 4 is one of the structural schematic diagram of Tu1Zhong torso exercise mechanism；

Fig. 5 is the second structural representation of Tu1Zhong torso exercise mechanism；

Fig. 6 is that the utility model is kicked one's legs connection relationship explosive view between sliding block assembly, wirerope and foot captive plate；

Fig. 7 be the utility model kick one's legs sliding block assembly, lower limb track and lifting piece between joint relationship installation diagram；

Fig. 8 is breaststroke technical movements exploded view；

Fig. 9 is the schematic diagram for increasing training time device.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts Every other embodiment obtained, fall within the protection scope of the utility model.

It is the structural schematic diagram for the land breaststroke learning machine that the utility model provides embodiment referring to Fig. 1.

The land breaststroke learning machine, including upper limb motion mechanism 1, torso exercise mechanism 2 and lower extremity movement mechanism 3.

Wherein, upper limb motion mechanism 1, including upper limb track 11, sliding block assembly 12 of striking, motor inductive switch 13 and lower limb Position-arresting device inductive switch 14；Sliding block assembly 12 strike along upper limb tracks travel 11, strikes state original position in upper limb, namely Motor inductive switch 13 is arranged in the outside of left and right arm when upper limb and lower limb stretch into a line, upper limb track 11, controls body Dry movement mechanism 2 acts；It is received at arm position in upper limb, lower limb position-arresting device inductive switch 14 is arranged in upper limb track 11, under control Limb movement mechanism can complete primary complete thrust kick.12 assembly of sliding block of striking include four universal wheels or multi-directional ball 121, Slider plate 122, cross axle 123 and plate 124 is stirred, upper limb track 11 is U-type groove, sees Fig. 3；122 upper face of slider plate setting one To spaced L-type connector 1221,1222, a pair of spaced L-type connector of lower face setting of plate 124 is stirred 1241,1242, cross axle 123 extend through the axis hole on L-type connector 1221,1222 and L-type connector 1241,1242 from And be rotatablely connected slider plate 122 and stir plate 124, when arm being facilitated to strike, the release of wrist torsion difference.Four universal wheels or ten thousand The lower face of slider plate 122 is set to ball 121, is run in the U-type groove of upper limb track 11.

Torso exercise mechanism 2, including support platen 21, hinge 22, tilting plate 23, speed regulating motor 24, eccentric wheel 25 and shake Bar, support platen 21 are fixed on rack, and support platen 21 is connected by a hinge one end of tilting plate 23, tilting plate 23 it is another One end is connect by rocking bar with eccentric wheel 25；Speed regulating motor 24 is located at the top of tilting plate 23, receives motor inductive switch 13 Signal drives eccentric wheel 25 to drive tilting plate 23 up and down, and simulation breaststroke trunk is acted in the ventilation of water surface dipping and heaving.

Another connection type of tilting plate 23 and eccentric wheel 25 are as follows: 25 one side axle center of eccentric wheel connects motor 24, partially The edge of the another side wheel of heart wheel 25 is equipped with a rotationally connected link block 26, and a tightrope 28 passes through link block 26 On through-hole 27, both ends are fixedly connected on the other end of tilting plate 23.

The another embodiment of torso exercise mechanism 2 are as follows: torso exercise mechanism 2 includes adjustable speed motor 201, telescopic rod 202 and trunk support plate 203；Three is linked in sequence, and adjustable speed motor 201 drives telescopic rod 202 to drive trunk support plate 203 Up and down, simulation breaststroke trunk is acted in the ventilation of water surface dipping and heaving.

Lower extremity movement mechanism 3, including lower limb track 31, sliding block assembly 32 of kicking one's legs, foot captive plate 33, wirerope 34 and under Limb position-arresting device 35；Sliding block assembly 32 of kicking one's legs is flexibly connected foot captive plate 33 by wirerope 34 to discharge sliding block assembly of kicking one's legs 32 rotations generated in sliding in lower limb track 31, and the rotation generated between sliding block assembly 32 and foot captive plate 33 of kicking one's legs Difference, sliding block assembly 32 of kicking one's legs；It is received at leg position in lower limb, lower limb position-arresting device 35 is arranged in lower limb track 31, and lower limb position-arresting device 35 connects The signal for accepting limb position-arresting device inductive switch 14, by or prevent kick one's legs sliding block assembly 32 slide, for avoiding uncomfortable opportunity Receive leg movement.

Sliding block assembly 32 of kicking one's legs includes the parallel arrangement of guide wheel 321 of a pair of same axis, a pair of of guide wheel connecting plate 322, axis 323, fitted lining mat piece 324 and bearing 325 with bearing mounting base；Interval setting upper shaft hole 3221 is under on guide wheel connecting plate 322 Axis hole 3222, a pair of of guide wheel connecting plate 322 are individually positioned in the two sides of a pair of same parallel arrangement of guide wheel 321 of axis, axis 3231,3232 pass through the center of the upper shaft hole 3221 of guide wheel connecting plate 322 and the guide wheel 321 close to guide wheel connecting plate 322 respectively Axis hole is attached；One through-hole 3241 is set in the fitted lining mat piece 324 being placed between a pair of of guide wheel connecting plate 322, and axis 3233 is logical The lower shaft hole 3222 and through-hole 3241 for crossing a pair of of guide wheel connecting plate 322 are fastenedly connected.Bearing 325 is pacified by bearing mounting base The other end loaded on fitted lining mat piece 324,325 connecting steel wire ropes of bearing, 34 one end, wirerope 34 connects foot captive plate 33.Lower limb Track 31 is the double guide rails matched with guide wheel 321；Welding lifting piece 4 between the two-orbit, vacantly to lift lower limb rail Road 31 makes the foot captive plate in the moved beneath of the lower limb track.

Breaststroke interoperation main points: oarsman's leg is motionless, receives hand and receives leg again, stretch out one's hand and kick one's legs again, closes up and stretch drift for a moment；Ventilation Movement: head of striking is lifted slowly, is stretched out one's hand and is slided slow expiration；Such as Fig. 8.In the present embodiment,

For breaststroke beginner when using the equipment, both arms are placed on the top of upper limb track 11, and both legs are placed on lower limb track 31 Lower section.Hand presses on stirring plate 124, and trunk is tied up to foot and be tethered at by 203 support of tilting plate 23 or trunk support plate, foot On plate 33.

The initial preparatory action of breaststroke: the action step 1 in corresponding diagram 8, both hands arm stretching, extended legs with thighs.

Oarsman's leg is motionless: the action step 2,3 in corresponding diagram 8, and step 2 is that upper limb is struck state initial position, upper limb to It strikes on the outside of left and right arm, sliding block assembly 12 of striking triggers the motor inductive switch 13 of the position, and motor inductive switch 13 is sent out Signal control driving speed regulating motor 24,201 drives tilting plate 23 or trunk support plate 203 slowly to move upwards out, simulates breaststroke The preparation aspiratory action that person is come back from underwater on the water surface.At this point, sliding block assembly 32 of kicking one's legs is in free state.

It receives hand and receives leg again: the action step 4,5 in corresponding diagram 8；Step 4 is to receive hand action step, i.e. upper limb receives arm position Place is set, corresponding sliding block assembly 12 of striking moves to the position along upper limb track 11, and lower limb position-arresting device inductive switch 14 sends signal The lower limb position-arresting device 35 that control normality is in off state is opened.At this point, corresponding step 5, sliding block assembly 32 of kicking one's legs is by being provided with Lower limb track 31 at lower limb position-arresting device position starts to receive leg, completes primary complete receipts leg movement.If upper limb arm stroke The receipts for also not arriving step 4 completely are made manually, and lower limb position-arresting device inductive switch 14 is unable to control the opening of lower limb position-arresting device 35, cunning of kicking one's legs Block assembly 32 can not receive leg movement to limit, reach hand by the lower limb track 31 being provided at 35 position of lower limb position-arresting device The harmony of arm and leg in actuation time.It is received at arm position in upper limb, speed regulating motor 24,201 drives tilting plate 23 or trunk Support plate 203 slowly moves downward, and simulation frog swimmer trunk is from preparation expiration movement from the water surface to underwater that slowly bowed on.It stretches Hand is kicked one's legs again: the action step 6,7 in corresponding diagram 8, that is, sliding block assembly 12 of striking is slided along upper limb guide rail 11 to front, due to It receives hand and receives the time difference caused by leg again, to carry out the sliding thrust kick of sliding block assembly 32 of kicking one's legs again.

Close up and stretch drift for a moment: the action step 8 in corresponding diagram 8, both hands arm stretching, both legs close up, sliding block assembly of striking 12 slide to forefront, and sliding block assembly 32 of kicking one's legs slides to rearmost, stretch upper limb with lower limb into a line, and floating is for a moment.It stretches The position of arm, speed regulating motor 24,201 stall, and wait sliding block assembly 12 of striking next time to trigger motor inductive switch 13, carry out down Arm stroke.

Upper limb track 11 and 31 motion profile of lower limb track can establish the wrist of breaststroke and the fortune of ankle according to three-dimensional software Dynamic locus model, by motion simulation and the final shape for determining track of experiment.Utilize sliding block assembly 12 and the sliding block of kicking one's legs of striking The movement that 32 simulated implementation wrist of assembly and ankle strike and kick one's legs guarantees stroke accuracy of action.

In another embodiment, the increase training time device 4 for cooperating above-mentioned land breaststroke learning machine to use, including lifting Eccentric wheel 41 and motor 42 above the torso exercise mechanism, eccentric wheel 41 pass through the 5th connector 43 and trainer institute band The helmet 5 connect, wherein the 5th connector 43 can be for rocking bar, rope or rigging etc., and motor 42 drives eccentric wheel 41 and tilting The fluctuating of plate 23 or trunk support plate 203 rotates synchronously namely the same revolving speed synchronous with eccentric wheel 25 of eccentric wheel 41 completes trainer Harmonious sling of chest and head raises up, puts down and homing action, to reduce trainer's chest in the torso exercise mechanism On pressure.

In order to more accurately complete air-breathing and expiration, an inductive switch and auditory tone cues loudspeaker are installed by eccentric wheel , correspondence is viva voce prompted in air-breathing and expiration.

The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit Decorations are also considered as the protection scope of the utility model.

Claims (9)

1. land breaststroke learning machine, including upper limb motion mechanism, torso exercise mechanism and lower extremity movement mechanism, which is characterized in that

Upper limb motion mechanism, including upper limb track, sliding block assembly of striking, motor inductive switch and lower limb position-arresting device inductive switch； Sliding block assembly to strike along upper limb tracks travel, strikes state original position in upper limb, motor inductive switch is arranged in upper limb track, Control the torso exercise mechanism action；It is received at arm position in upper limb, lower limb position-arresting device inductive switch, control is arranged in upper limb track Lower extremity movement mechanism processed can complete primary complete receipts leg thrust kick；Wherein, upper limb strikes state initial position positioned at upper The outside of right-hand man when limb and lower limb stretch into a line；

Lower extremity movement mechanism, including lower limb track, sliding block assembly of kicking one's legs, foot captive plate, the first connector and lower limb position-arresting device； Sliding block assembly kick one's legs along lower limb tracks travel, the first connector is flexibly connected kick one's legs sliding block assembly and foot captive plate；In lower limb It receives at leg position, lower limb position-arresting device is arranged in lower limb track, and lower limb position-arresting device receives the signal of lower limb position-arresting device inductive switch, passes through Or sliding block assembly sliding of kicking one's legs is prevented, for avoiding the receipts leg on uncomfortable opportunity from acting.

2. land breaststroke learning machine as described in claim 1, which is characterized in that the sliding block assembly of striking includes several wheels Son, slider plate, cross axle and plate is stirred, the upper limb track is U-type groove；

A pair of spaced second connector of slider plate upper face setting, the lower face setting for stirring plate are a pair of spaced Third connector, cross axle extend through the axis hole on the second connector and third connector to be rotatablely connected slider plate and turn over The lower face of slider plate is arranged in movable plate, several wheels, runs in the U-type groove of the upper limb track.

3. land breaststroke learning machine as claimed in claim 2, which is characterized in that the wheel is universal wheel or multi-directional ball.

4. land breaststroke learning machine as described in claim 1, which is characterized in that the sliding block assembly of kicking one's legs includes a pair of same The parallel arrangement of guide wheel of axis, a pair of of guide wheel connecting plate, axis, the fitted lining mat piece with bearing mounting base and bearing；

Upper shaft hole is set on guide wheel connecting plate and lower shaft hole, the pair of guide wheel connecting plate are individually positioned in the pair of same axis The two sides of the parallel arrangement of guide wheel of line, first axle are connected with the upper shaft hole that the second axis passes through guide wheel connecting plate respectively with close to guide wheel The central shaft hole of the guide wheel of plate is attached；It is logical to be placed in setting one in the fitted lining mat piece between the pair of guide wheel connecting plate Hole, third axis are fastenedly connected by the lower shaft hole and the through-hole of the pair of guide wheel connecting plate；

The bearing is installed on the fitted lining mat piece by the bearing mounting base, and the bearing connects first connector one The other end at end, first connector connects the foot captive plate；

The lower limb track is the two-orbit matched with the guide wheel；

Lifting portion is arranged between the two-orbit makes the foot captive plate in the lower limb vacantly to lift lower limb track The moved beneath of track.

5. land breaststroke learning machine as claimed in claim 4, which is characterized in that first connector is wirerope.

6. land breaststroke learning machine as described in claim 1, which is characterized in that

The torso exercise mechanism, including support platen, hinge, tilting plate, motor, eccentric wheel and the 4th connector, supporting table Plate is fixed on rack, and support platen is connected by a hinge one end of tilting plate, and the other end of tilting plate connects by the described 4th Fitting is connect with eccentric wheel, and the signal driving eccentric wheel that motor receives the motor inductive switch drives tilting plate up and down, The ventilation that breaststroke trunk is simulated in water surface dipping and heaving acts；Or

The torso exercise mechanism, including motor, telescopic rod and trunk support plate；Three is linked in sequence, motor driven telescopic rod Drive trunk support plate up and down, simulation breaststroke trunk is acted in the ventilation of water surface dipping and heaving.

7. land breaststroke learning machine as claimed in claim 6, which is characterized in that the sliding block assembly of striking is struck dynamic according to upper limb Make to strike from upper limb during state initial position slides into upper limb straight position, the rotation of eccentric wheel described in the motor driven 360 ° primary, drives tilting plate sequence from primary, the motor stopping down to height, then from up to harmonic motion.

8. land breaststroke learning machine as claimed in claims 6 or 7, which is characterized in that the motor is adjustable speed motor.

9. increasing training time device, which is characterized in that including being lifted on body described in any claim in claim 1-8 Eccentric wheel and motor above dry movement mechanism, the eccentric wheel are connect by the 5th connector with the helmet of trainer institute band, The fluctuating of motor driven eccentric wheel and the torso exercise mechanism rotates synchronously, to reduce trainer's chest in the torso exercise Pressure in mechanism.