CN116115960B - Multi-dimensional upper limb whiplash action training machine and use method thereof - Google Patents
Multi-dimensional upper limb whiplash action training machine and use method thereof Download PDFInfo
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- CN116115960B CN116115960B CN202211397729.8A CN202211397729A CN116115960B CN 116115960 B CN116115960 B CN 116115960B CN 202211397729 A CN202211397729 A CN 202211397729A CN 116115960 B CN116115960 B CN 116115960B
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- 238000012549 training Methods 0.000 title claims abstract description 110
- 230000009471 action Effects 0.000 title claims abstract description 83
- 210000001364 upper extremity Anatomy 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 52
- 239000010959 steel Substances 0.000 claims abstract description 52
- 230000008569 process Effects 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 5
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- 230000007423 decrease Effects 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
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- 210000003205 muscle Anatomy 0.000 description 8
- 230000001360 synchronised effect Effects 0.000 description 7
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- 230000005540 biological transmission Effects 0.000 description 3
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- 210000003857 wrist joint Anatomy 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 210000004247 hand Anatomy 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000036962 time dependent Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
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- 230000005484 gravity Effects 0.000 description 1
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- 238000005381 potential energy Methods 0.000 description 1
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- 238000004088 simulation Methods 0.000 description 1
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- 238000012546 transfer Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/12—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for upper limbs or related muscles, e.g. chest, upper back or shoulder muscles
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B24/00—Electric or electronic controls for exercising apparatus of preceding groups; Controlling or monitoring of exercises, sportive games, training or athletic performances
- A63B24/0003—Analysing the course of a movement or motion sequences during an exercise or trainings sequence, e.g. swing for golf or tennis
- A63B24/0006—Computerised comparison for qualitative assessment of motion sequences or the course of a movement
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B24/00—Electric or electronic controls for exercising apparatus of preceding groups; Controlling or monitoring of exercises, sportive games, training or athletic performances
- A63B24/0003—Analysing the course of a movement or motion sequences during an exercise or trainings sequence, e.g. swing for golf or tennis
- A63B24/0006—Computerised comparison for qualitative assessment of motion sequences or the course of a movement
- A63B2024/0009—Computerised real time comparison with previous movements or motion sequences of the user
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Abstract
The embodiment of the invention discloses a multi-dimensional upper limb whipping action training machine and a use method thereof, belonging to the technical field of exercise training equipment, wherein the multi-dimensional upper limb whipping action training machine comprises a main body frame shell which is used for being placed perpendicular to the ground, wherein: the main body frame shell is provided with a vertical sliding rail, the sliding rail is provided with at least two jacks, the sliding rail is provided with a sliding block which can slide along the sliding rail and can be locked in the jacks, and the sliding block is provided with a movable arm; the main body frame shell is internally provided with a motor, a steel rope and a micro control unit, the motor is connected with the steel rope in a driving way, the tail end of the steel rope penetrates out of the sliding block and the movable arm to be connected with the racket rod simulator, and the micro control unit is electrically connected with the motor to control the motor to pull the steel rope to generate training load which changes along with training actions of a trainer. The embodiment of the invention is suitable for upper limb whipping action training, can realize that the action speed and the force of a trainer follow the action mode in reality, and realize the whipping action training of the upper limb of the trainer without tracks and in multiple dimensions.
Description
Technical Field
The invention relates to the technical field of exercise training equipment, in particular to a multi-dimensional upper limb whipping action training machine and a using method thereof.
Background
At present, various training devices appear in the field of sports training, in the device aiming at upper limb training, most of the training devices have single training actions and are mostly constant-speed or equal-resistance training, and the requirements of most training crowds can be met in the field of body building and rehabilitation, but the two training modes are difficult to meet the force-exerting mode of the sports action in the current sports, and the related training devices are still in a relatively missing state at present. In sports, the upper limb movements are usually whipping movements, such as tennis swing, baseball batting, etc., in which the speed of the limb end gradually increases, and the speed reaches the maximum during batting or other appliances, but when the movements are brought into the constant speed or equal resistance training equipment, the speed or resistance is equal during the whole movement process set by the equipment, so that the action speed and the force of the trainer cannot follow the action mode in reality.
The invention patent application CN106994085A discloses a trackless isotonia muscle strength rehabilitation training device, which comprises: a frame; the counterweight unit is arranged in the frame and can adjust the counterweight of the training device; at least one handle which is slidably arranged on the frame and is in transmission connection with the counterweight unit through a rope; the pulley block is used for connecting the handle and the counterweight unit and comprises a fixed pulley block arranged on the frame and a movable pulley block arranged on the counterweight unit; the rope bypasses the pulley block and is connected with the handle. The invention has the advantages of multistage adjustment of the counterweight, simulation of the movement of single joints and multiple joints of the upper and lower limbs, load reduction and rehabilitation training effect improvement.
According to the invention, the resistance adjusting device selects the counterweight unit, and the counterweight and the bolt are used for resistance adjustment, so that the equal-tension muscle strength rehabilitation training is realized. The invention mainly aims at rehabilitation training of patients, does not relate to action training of other people, adopts the weight of a balancing weight for resistance adjustment, and has relatively limited and single adjustment capability.
The invention patent application CN114849176A discloses a servo resistance-regulated multi-track force trainer and a use method thereof, the force trainer comprises a main frame assembly welding, swing arm assemblies with adjustable angles and heights are arranged on two sides of the main frame assembly welding, a display screen is arranged on the front side of the main frame assembly welding, a motor and a rope winch are arranged on the main frame assembly welding through a supporting seat, the output end of the motor is fixedly connected with a first synchronous belt pulley, one end of the rope winch is fixedly connected with a second synchronous belt pulley, the first synchronous belt pulley is connected with the second synchronous belt pulley through a synchronous belt, the synchronous belt is tensioned through a synchronous belt tensioning wheel assembly, a rope is wound on the rope winch, and the other end of the rope passes through the fixed pulley block, the movable pulley block, the sliding rail and the swing arm assembly to be fixed on a swing arm handle. The invention is suitable for training of training staff with different heights, can be suitable for training of different positions of the same training staff, is convenient to store, has good user experience, and meets the requirements of body-building crowds.
The invention applies a servo motor to adjust resistance training load, but the training action is limited by the arrangement of the swing arm, so that the upper limb can be trained only.
Disclosure of Invention
In view of the above, the embodiment of the invention provides a multi-dimensional upper limb whipping action training machine which is suitable for upper limb whipping action and can realize that the action speed and the force of a trainer follow the action mode in reality, and a use method thereof.
In a first aspect, embodiments of the present invention provide a multi-dimensional upper limb whipping action training machine comprising a main body housing for placement perpendicular to the ground, wherein:
The main body frame shell is provided with a vertical sliding rail, the sliding rail is provided with at least two jacks, the sliding rail is provided with a sliding block which can slide along the sliding rail and can be locked in the jacks, and the sliding block is provided with a movable arm;
The main body frame shell is internally provided with a motor, a steel rope and a micro control unit, the motor is in driving connection with the steel rope, the tail end of the steel rope penetrates out of the sliding block and the movable arm to be connected with the racket rod simulator, and the micro control unit is electrically connected with the motor so as to control the motor to pull the steel rope to generate training load which changes along with training actions of a trainer.
In a second aspect, an embodiment of the present invention provides a method for using the multi-dimensional upper limb whiplash exercise machine, including:
step 1: in an initial state, the motor pulls the winch to reset the steel cable to 0 position, so that the steel cable is ensured to be in a tensioning state initially;
step 2: the trainer selects training actions on a display screen, the display screen sends various parameters to a micro-control unit, and the micro-control unit controls a motor to perform relevant control;
step 3: the trainer adjusts the number and/or the positions of the movable arms according to the selected training actions and the body height;
Step 4: the trainer holds the racket rod simulator, the equipment is in an empty load state, and in the test, the trainer performs an empty swing so that the equipment can measure the speed and the tension of the upper limb swing of the trainer and the time sequences corresponding to the speed and the tension of the upper limb swing of the trainer, and finally, a data sequence of the speed and the force changing along with time is obtained;
Step 5: the device segments the data sequence according to the time of one-time waving of a trainer and the acceleration in the waving process, and divides the data sequence into three stages of backswing, waving and waving, wherein the device applies load which gradually decreases to zero along with time to the steel cable in the backswing and waving stages, and does not apply load to the steel cable in the waving stage, so that the trainer is trained;
step 6: the trainer finishes training, loosens the racket rod simulator, and the motor controls the steel cable to reset.
The multi-dimensional upper limb whiplash action training machine and the use method thereof provided by the embodiment of the invention are suitable for upper limb whiplash action training, and realize electric transmission through the motor, so that the training machine can accurately control the load required by training action, thereby realizing that the action speed and the force of a trainer follow the action mode in reality; the training of the trackless multi-dimensional whipping action of the upper limbs of the trainee is realized by a mode of soft connection of the steel rope with the racket rod simulator.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of a multi-dimensional upper limb whiplash exercise machine of the present invention;
FIG. 2 is a schematic view of the housing of the main body frame of FIG. 1;
FIG. 3 is a schematic view of the slide rail of FIG. 1, wherein (a) is a front elevation view, (b) is a rear elevation view, and (c) is a rear perspective view;
FIG. 4 is a schematic perspective view of the movable arm and slider of FIG. 1;
FIG. 5 is a schematic side view of the movable arm and slider of FIG. 1;
FIG. 6 is a schematic view of the inner surface structure of the slider of FIG. 1;
FIG. 7 is a schematic view of the internal and external structure of the multi-dimensional upper limb whiplash exercise machine of FIG. 1, wherein (a) is an internal elevation view, (b) is an external perspective view, and (c) is an internal perspective view;
FIG. 8 is a schematic diagram of the circuit connections of the multi-dimensional upper limb whipping motion training machine shown in FIG. 1;
FIG. 9 is a graph showing the tension of the trainer according to the present invention with time;
FIG. 10 is a graphical representation of the training load of the apparatus over time in accordance with the present invention;
FIG. 11 is a schematic diagram of a random variation rule of training intensity of a device according to the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Whiplash action of the upper limbs:
The human body is structurally characterized in that all links of the human body are connected by joints, so that the human body can be often simplified into a ring joint chain when the motion of the human body is studied. In sports, when the end of a link chain is expected to generate maximum speed and strength, the movement form of limbs often appears to be sequentially accelerated and braked from a near end link to a far end link, and the speed of each link also appears to be sequentially increased from the near end to the far end.
Whiplash action is an important component of many physical skill actions, exemplified by the upper limbs: for example, the volleyball swing batting action (including ball serving and ball catching) is a whipping action that the trunk drives the upper limbs, the shoulders, the elbows, the wrists and the hands to exert force in sequence; in some throwing projects, whipping action takes an important part.
In one aspect, an embodiment of the present invention provides a multi-dimensional upper limb whipping action training machine, as shown in fig. 1-8, comprising a main body frame housing 1 for placement perpendicular to the ground, wherein:
the main body frame shell 1 is provided with a vertical sliding rail 2, the sliding rail 2 is provided with at least two jacks 21, the sliding rail 2 is provided with a sliding block 3 which can slide along the sliding rail 2 and can be locked in the jacks 21, and the sliding block 3 is provided with a movable arm 4;
The main body frame shell 1 is internally provided with a motor 5 (particularly a permanent magnet direct current motor), a steel cable 6 and a micro control unit (Microcontroller Unit, MCU) 7, wherein the motor 5 is in driving connection with the steel cable 6, the tail end of the steel cable 6 penetrates out of the sliding block 3 to be connected with the movable arm 4 (particularly in threaded connection) to form a racket rod simulator 8, and the micro control unit 7 is electrically connected with the motor 5 to control the motor 5 to pull the steel cable 6 to generate training load which changes along with training actions of a trainer.
The training machine mainly meets the requirement of upper limb whipping action training, and realizes motion load control through the motor 5 and the micro-control unit 7. When in use, a trainer adjusts the position of the movable arm 4 by moving the sliding block 3 in the sliding rail 2 and locking the sliding block 3 in the corresponding jack 21 according to the training action and the height of the trainer; then, the micro-control unit 7 controls the motor 5 to pull the steel rope 6 to generate training load which changes along with the training action of a trainer, and the trainer holds the racket rod simulator 8 for training.
The multi-dimensional upper limb whipping action training machine provided by the embodiment of the invention is suitable for upper limb whipping action training, and realizes electric transmission through the motor, so that the training machine can accurately control the load required by training action, thereby realizing that the action speed and the force of a trainer follow the action mode in reality; the training of the trackless multi-dimensional whipping action of the upper limbs of the trainee is realized by a mode of soft connection of the steel rope with the racket rod simulator.
As shown in fig. 2 to 4, the insertion hole 21 is preferably an octagonal insertion hole, and the slider 3 is in an octagonal prism shape corresponding to the octagonal insertion hole, so that the slider 3 can be rotatably adjusted to perform the direction adjustment of the movable arm 4. Further, the sliding block 3 may include an inner octagon 31 and an outer octagon 32 which are stacked in two layers, the size of the inner octagon 31 is larger than that of the outer octagon 32, and the shape of the octagon jack is matched with that of the sliding block 3, so as to adjust the rotation angle of the movable arm 4, thereby adjusting the training direction of whipping action, and a trainer can select the training direction suitable for self habit or standard action in the project.
The movable arm 4 is preferably fixedly arranged on the outer surface of the sliding block 3 (namely, the outer surface of the outer eight-prism 32), and the width of the movable arm 4 is smaller than or equal to the width of a track groove (hollowed) of the sliding rail 2 so as to facilitate up-and-down sliding adjustment in the sliding rail 2; as shown in fig. 4, the movable arm 4 may be formed by a pair of connection plates arranged side by side.
Thus, the height adjustment method of the movable arm 4 may be: when the movable arm 4 is at a default position, the movable arm 4 is pushed into the inner side of the main body frame shell 1, the width of the connecting plate is slightly smaller than the width of the track groove of the sliding rail 2, and the movable arm 4 can be manually adjusted to move up and down in the sliding rail 2 to change the height. The sliding rail 2 has a structure as shown in fig. 3, and the upper insertion hole 21 is also in a two-layer eight-prism shape, corresponding to the sliding block 3, and can fix the movable arm 4 when a trainer pulls the racket rod simulator 8.
The direction adjustment method of the movable arm 4 may be: firstly, the movable arm 4 is adjusted to a proper height, then the movable arm 4 is pushed into the main body frame shell 1, the smaller octagon (namely the outer octagon 32) pushed to the sliding block 3 can be adjusted in a rotating way, the octagon can enable the movable arm 4 to have three direction adjustment degrees (0 DEG, 45 DEG and 90 DEG) during training, and a trainer can select the direction which is most suitable for himself or is most suitable for standard action power.
As shown in fig. 4-6, the sliding block 3 and the movable arm 4 may be provided with a wire hole 33 (which may specifically correspond to the central position of the sliding block 3) through which the wire 6 passes, so as to facilitate guiding and limiting of the wire 6. The movable arm 4 may have a pair of fixed pulleys 41 vertically juxtaposed at its distal end, with an intermediate passage being formed between the fixed pulleys 41 for the passage of the wire rope 6 for guiding.
As shown in fig. 7, in order to facilitate driving of the steel cable 6, a winch 9 may be further disposed in the main frame housing 1 (the winch 9 and the motor 5 may be an integral structure as shown in the drawing, i.e., the housing of the motor 5 is used as the winch 9), the steel cable 6 is wound on the winch 9, and the motor 5 is connected with the winch 9 in a driving manner to drive the steel cable 6; the motor 5 and the winch 9 can be both positioned below the inside of the main body frame shell 1, and the tail end of the steel cable 6 passes through the sliding block 3 and the movable arm 4 to be connected with the racket rod simulator 8 after the steel cable bypasses the pulley block.
For better control of the direction of the wire rope 6, the pulley block preferably comprises a first fixed pulley 11, a second fixed pulley 12 and a third fixed pulley 13, wherein:
a first fixed pulley 11 is located below the inside of the main body housing 1 and between the winch 9 and the slide rail 2 for turning the direction of the wire rope 6 (extending from the winch 9) vertically upward;
the second fixed pulley 12 is positioned above the inside of the main body frame shell 1 and is used for turning the direction of the steel cable 6 into a vertical downward direction;
The third fixed pulley 13 is located on the inner surface of the slider 3 (i.e. the inner surface of the inner octagon 31) so that the wire rope 6 is turned to be drilled from the central hole of the slider 3, and the inner surface of the slider 3 may be further provided with a fixed pulley fixing disc 14 for fixing the third fixed pulley 13 stationary relative to the slider 3.
In this way, as the motor 5 and the winch 9 are positioned below the inner part of the main body frame shell 1, the whole gravity center of the training machine is lower, and the stability of the main body frame shell 1 after being installed is improved; the pulling direction of the steel cable 6 from the winch 9 to the movable arm 4 is changed through the pulley block formed by the first fixed pulley 11, the second fixed pulley 12 and the third fixed pulley 13, so that the extension and the direction control of the steel cable 6 are better realized; and the third fixed pulley 13 allows the cable 6 to pass from the center of the cable hole 33 to the intermediate passage between the pair of fixed pulleys 41, reducing the frictional force influence of the cable 6 during training.
As shown in fig. 1-2, for more convenient use, the sliding rail 2, the sliding block 3 and the movable arm 4 can be two sets as shown in the drawing, and are respectively located at two sides of the main body frame shell 1, and the motor 5, the winch 9, the pulley block and the steel cable 6 are also two sets so as to be respectively connected with the racket rod simulators 8 on the movable arms 4 at two sides of the main body frame shell 1.
Further, a display screen 10 for setting training parameters can be arranged on the main body frame shell 1, the micro control unit 7 regulates and controls the training parameters, and the training load is controlled and generated through the motor 5 and the steel cable 6. The trainer adjusts the height and the direction of the pluggable movable arm 4 on the sliding rails 2 on the two sides of the main body frame shell 1 to adapt to the training requirements of various actions of the trainer. The micro control unit 7 controls the motor 5, and the steel cable 6 realizes multi-dimensional direction traction through the pulley block, so that multi-action training is realized. The winch 9 can be provided with a speed limiting device, and when a trainer moves independently, the speed limiting device can adjust the resistance of the steel cable to the limb at any time according to the strength of the limb.
In the embodiment of the invention, the circuit layer can be realized by adopting the conventional technology in the field. Fig. 8 is a schematic circuit connection diagram of the present invention, in which the MCU is connected to a power module, a signal receiving module, a signal emitting module and a storage module, the switch control module is controlled to be connected to the power module, the display screen is connected to the signal receiving module, and the signal emitting module is connected to the motor.
In another aspect, an embodiment of the present invention provides a method for using the multi-dimensional upper limb whiplash training machine, including:
step 1: in an initial state, the motor pulls the winch to reset the steel cable to 0 position, so that the steel cable is ensured to be in a tensioning state initially;
step 2: the trainer selects training actions on a display screen, the display screen sends various parameters to a micro-control unit, and the micro-control unit controls a motor to perform relevant control;
step 3: the trainer adjusts the number and/or the positions of the movable arms according to the selected training actions and the body height;
Step 4: the trainer holds the racket rod simulator, at the moment, the equipment (namely the multi-dimensional upper limb whipping action training machine) is in a null load state, and in the test, the trainer performs a null swing once, so that the equipment can measure the speed and the tension of the current upper limb swing of the trainer and the time sequences corresponding to the speed and the tension of the current upper limb swing of the trainer, and finally, a data sequence of the speed and the force changing along with time is obtained;
Step 5: the device segments the data sequence according to the time of one-time waving of a trainer and the acceleration in the waving process, and divides the data sequence into three stages of backswing, waving and waving, wherein the device applies load which gradually decreases to zero along with time to the steel cable in the backswing and waving stages, and does not apply load to the steel cable in the waving stage, so that the trainer is trained;
During whipping action, the muscles of the upper limbs are passively lengthened before contraction and exerting force. In the device, the system divides the whipping action into three action phases, namely 'backswing', 'waving' and 'waving'. The backward swing is the posture that the shoulder moves at a higher speed than the upper limb under the driving of the trunk in the movement process, so that the shoulder is in front (upper) and the hand is in back (lower), and the aim is to increase the working distance of the subsequent forced action; meanwhile, the active muscle which is forced to swing forward is pulled rapidly and strongly, so that the elastic potential energy is accumulated in the muscle, and the pretension of the muscle is improved before the forward swing action, so that the total contraction force of the muscle during the swing action is increased. The purpose of the forceful "swing" phase is to obtain the maximum speed at the end of the upper limb by successive rapid swings of the various links of the upper limb. The term "swing" refers to the follow-up phase of a whipping action, which refers to the follow-up phase of a training person, such as the forward swing following after a tennis ball touches or the end phase of the action after a baseball ball leaves hands, and mainly occurs according to the inertia generated in the "swing" phase.
Fig. 9 is a schematic diagram of the time-dependent force applied by the trainer during the whipping action of the upper limb, and fig. 10 is a schematic diagram of the time-dependent load applied by the trainer motor. The force varies significantly during the different phases of motion. Therefore, in the present step 5, the specific method for segmenting the data sequence is preferably:
According to the instantaneous point position dividing action stage, S0-S1 is a backswing stage, S1-S2 is a swing stage, S2-S3 is a swing stage, wherein S0 is a leading moment, S1 is a swing starting moment, S2 is a batting moment, and S3 is a follow-up swing ending moment. The details are shown in table 1 below.
TABLE 1 dividing table for each stage of whipping action
| Phase division | Description of the action |
| Backswing stage | From the start time of S0 to the start time of S1 |
| Swing stage | From the beginning moment of S1 swing to the moment of S2 ball striking |
| Swing stage | From the moment of striking the ball at S2 to the moment of finishing the swing at S3 |
The whipping action is a process that momentum is sequentially transferred from the proximal ring section to the distal ring section, the mass of the proximal ring section is larger, the mass of the distal ring section is smaller, and the proximal ring section is braked to transfer the momentum to the distal ring section, so that the distal ring section with smaller mass obtains larger movement speed.
In the backward swinging stage, the speed is increased and reaches a first peak value in the early elbow bending and lifting process, and in the later elbow stretching process, the hand and the wrist are lifted to the side rear of the head under the drive of the forearm, and the racket speed is reduced along with the reduction of the elbow joint speed. S1 is the instantaneous point position of the minimum speed after the first peak value appears.
In the swing stage, the shoulder and elbow joints are braked, the elbow joints are taken as axes, the front arms are accelerated to swing towards the batting point, the flexor muscle group is contracted, the fingers are used for holding the racket, meanwhile, the wrist joints are rapidly buckled to drive the racket to swing forwards, the angle of the wrist joints is increased, the speed is increased, the batting is carried by the front arms to drive the wrist parts to perform 'whipping' type flickering swing, the internal rotation force of the wrist is generated at the moment of batting, the ball is drawn towards the other side, and the maximum speed appears before batting.
The impact between the ball and the racket generates resistance, and also affects the wrist joint speed descending curve, and the energy generated in the whole link of the ball pumping action is converted into the kinetic energy of the ball, so that the ball is accelerated to fly to the upper space of the opposite field. In the swinging stage, after batting, the racket instantaneous cover swings leftwards in the past, swings to the opposite side hip along with inertia, and continuously swings forwards under the swing inertia, so that the speed of the racket is rapidly reduced.
S0 is the instant point in time when the speed begins to increase; s1 is an instantaneous point position of the minimum speed after the first peak value appears; the speed of the racket reaches the maximum value before batting and descends after batting, and the set speed is the moment of S2 batting when the set speed is the maximum; s3 is when the speed decreases to 0 after S2.
In the step 5, in the backswing and waving stage, the method for setting the load applied by the device to the steel cable is preferably as follows: setting the time sequence of the blank pull of the trainer as T 0, the pull sequence as F 0, setting the single training time as T according to the training time given by the trainer, setting the load as F, and setting the T 0 and T equal, namely setting the pull time of the trainer as the single training time of the equipment. The real-time load F given by the device is then calculated by f=f max-F0, i.e. the real-time load F given by the device is set to the trainer tension maximum F max minus the tension value F 0 at the same point in time.
Further, the load step setting method may be: the first idle swing stage takes the weight of the corresponding sports equipment as the load; in the training stage, adaptive load is added to the load selected by the trainer so as to increase the load during ball serving/batting, the training stage is divided into three time periods of 'backswing', 'waving' and 'waving' according to the first idle waving time and the first power of the trainer, the load applied by the equipment in the two time periods of 'backswing' and 'waving' is gradually reduced to zero, 20% idle waving load is added as training load during training, the training stage is carried out for 20 times in a single group, the intensity conversion is carried out according to the training intensity rule of fig. 11, and when the trainer can continuously complete the specified action group number, the training of the next stage can be carried out. Training purpose: the hand strength of the trainer is increased, and the hand speed of the trainer is accelerated. The reference weights for the sports equipment are shown in table 2 below.
Table 2 sports equipment reference weight
Step 6: after the training, the trainer finishes the training, loosens the racket rod simulator (the position of the movable arm can be restored), and the motor controls the steel cable to reset.
According to the application method of the multi-dimensional upper limb whipping action training machine provided by the embodiment of the invention, through the steps 1-6, the training machine can accurately control the load required by training actions, so that the action speed and the force of a trainer follow the action mode in reality, and the non-track multi-dimensional whipping action training of the upper limb of the trainer is realized.
In summary, the multi-dimensional upper limb whipping action training machine and the application method thereof mainly meet the requirement of upper limb whipping action training, can be used for track-free omni-directional action training, can simulate the load to gradually reduce so as to realize upper limb whipping action training, and make up for training forms except constant speed and equal load.
In the embodiment of the invention, the resistance control system is based on the motor and the micro control unit, and can realize real-time resistance control, thereby training in various load modes.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (9)
1. The application method of the multi-dimensional upper limb whiplash action training machine is characterized in that the multi-dimensional upper limb whiplash action training machine comprises a main body frame shell which is used for being placed perpendicular to the ground, wherein:
The main body frame shell is provided with a vertical sliding rail, the sliding rail is provided with at least two jacks, the sliding rail is provided with a sliding block which can slide along the sliding rail and can be locked in the jacks, and the sliding block is provided with a movable arm;
The main body frame shell is internally provided with a motor, a steel rope and a micro control unit, the motor is in driving connection with the steel rope, the tail end of the steel rope penetrates out of the sliding block and the movable arm to be connected with the racket rod simulator, and the micro control unit is electrically connected with the motor to control the motor to pull the steel rope to generate training load which changes along with training actions of a trainer;
The using method comprises the following steps:
step 1: in an initial state, the motor pulls the winch to reset the steel cable to 0 position, so that the steel cable is ensured to be in a tensioning state initially;
step 2: the trainer selects training actions on a display screen, the display screen sends various parameters to a micro-control unit, and the micro-control unit controls a motor to perform relevant control;
step 3: the trainer adjusts the number and/or the positions of the movable arms according to the selected training actions and the body height;
Step 4: the trainer holds the racket rod simulator, the equipment is in an empty load state, and in the test, the trainer performs an empty swing so that the equipment can measure the speed and the tension of the upper limb swing of the trainer and the time sequences corresponding to the speed and the tension of the upper limb swing of the trainer, and finally, a data sequence of the speed and the force changing along with time is obtained;
Step 5: the device segments the data sequence according to the time of one-time waving of a trainer and the acceleration in the waving process, and divides the data sequence into three stages of backswing, waving and waving, wherein the device applies load which gradually decreases to zero along with time to the steel cable in the backswing and waving stages, and does not apply load to the steel cable in the waving stage, so that the trainer is trained;
Step 6: the trainer finishes training, loosens the racket rod simulator, and controls the steel rope to reset through the motor;
In the step 5, the backswing stage is from the start time S0 to the start time S1, the swing stage is from the start time S1 to the striking time S2, and the swing stage is from the striking time S2 to the end time S3.
2. The method of claim 1, wherein the receptacle is an octagonal receptacle and the slider is in the shape of an octagon that fits the octagonal receptacle.
3. The method of claim 2, wherein the slider comprises two stacked inner and outer octagons, the inner octagons being larger in size than the outer octagons, and the octagonal insertion holes being shaped to match the shape of the slider.
4. The use method according to claim 1, wherein the movable arm is fixedly arranged on the outer surface of the sliding block, and the width of the movable arm is smaller than or equal to the width of the track groove of the sliding rail.
5. The method of claim 1, wherein the slide and the movable arm are provided with a wire rope hole through which the wire rope passes;
And/or the tail end of the movable arm is vertically provided with a pair of fixed pulleys in parallel, and a middle channel for the steel cable to pass through for guiding is formed between the fixed pulleys;
and/or the movable arm is formed by a pair of connecting plates arranged in parallel.
6. The method of claim 1, wherein a winch is further provided in the main housing, the wire rope is wound around the winch, and the motor is in driving connection with the winch to drive the wire rope;
The motor and the winch are both positioned below the inside of the main body frame shell, and the tail end of the steel cable penetrates out of the sliding block and the movable arm to be connected with the racket rod simulator after bypassing the pulley block.
7. The method of claim 6, wherein the pulley block comprises a first fixed pulley, a second fixed pulley, and a third fixed pulley, wherein:
The first fixed pulley is positioned below the inside of the main body frame shell and between the winch and the sliding rail, and is used for converting the direction of the steel cable into the vertical direction;
the second fixed pulley is positioned above the inside of the main body frame shell and is used for turning the direction of the steel cable into a vertical downward direction;
the third fixed pulley is positioned on the inner surface of the sliding block.
8. The method of use of claim 6, wherein the motor and winch are of unitary construction;
and/or the winch is provided with a speed limiting device;
and/or a display screen for setting training parameters is arranged on the main body frame shell;
and/or the sliding rail, the sliding block and the movable arm are respectively arranged at two sides of the main body frame shell, and the motor, the winch, the pulley block and the steel cable are respectively arranged at two sets.
9. The method according to claim 1, wherein in the step 5, the method for setting the load applied to the wire rope by the device during the backswing and swing phases comprises: setting the time sequence of the blank pull of the trainer as T 0, the pull sequence as F 0, setting the single training time as T, and setting the load as F, wherein T 0 and T are equal according to the single training time given by the trainer; the real-time load F given by the device is calculated by f=f max-F0, i.e. the real-time load F given by the device is set to the trainer tension maximum F max minus the tension value F 0 at the same point in time.
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