CN113413576B - Device is tempered with shank to sports teaching and training - Google Patents
Device is tempered with shank to sports teaching and training Download PDFInfo
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- CN113413576B CN113413576B CN202110757401.1A CN202110757401A CN113413576B CN 113413576 B CN113413576 B CN 113413576B CN 202110757401 A CN202110757401 A CN 202110757401A CN 113413576 B CN113413576 B CN 113413576B
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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
- A63B23/04—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs
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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
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/06—User-manipulated weights
- A63B21/062—User-manipulated weights including guide for vertical or non-vertical weights or array of weights to move against gravity forces
- A63B21/0626—User-manipulated weights including guide for vertical or non-vertical weights or array of weights to move against gravity forces with substantially vertical guiding means
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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
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
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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
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
- A63B2071/0602—Non-electronic means therefor
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Recording Measured Values (AREA)
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Abstract
The invention relates to a leg exercise device for physical education and training, and belongs to the technical field of multimedia interaction. The invention provides a leg exercising device which can visually reflect leg movement conditions of students through a trajectory line on recording paper (the slope and the length of the trajectory line on the recording paper, and the time point and the time length of a horizontal line can improve fatigue degree and load bearing tolerance of the students), and can respond to different brushes to draw the trajectory line when different load bearing levels are switched, so that the leg exercising device can monitor the muscle fatigue degree of the legs of the students exercising different times under different loads in real time and visually reflect muscle fatigue rules of the students, and a teacher is helped to know the adaptation condition of the students when the various load bearing levels are switched, and the teacher is helped to specify a more scientific training plan for the students.
Description
Technical Field
The invention relates to a leg exercise device for physical education and training, and belongs to the technical field of physical education and training.
Background
Physical exercise, especially leg exercise, is particularly important. The leg muscles are sufficiently exercised, so that the achievement of the students in sports such as running, long jump, high jump and the like can be well improved, and the probability of muscle strain of the students in the sports can be reduced.
Currently, more traditional leg exercise devices, such as treadles, treadmills, elliptical machines, etc., are still used to exercise the legs. However, these traditional shank exercise device can not be when the student carries out the continuation and takes exercise, and the tired degree of shank muscle after the real-time supervision student takes exercise different times also can not embody the tired degree of student shank with a comparatively audio-visual mode, seeks student's the tired law of muscle, more can not take place to change repeatedly and when switching at gravity, the tired degree of shank muscle of real-time supervision student under different heavy burdens.
Even use the shank that has the function of measuring the rhythm of the heart and temper the device, the coach also can only learn physiological data such as student's heartbeat, blood pressure, but still can't real-time supervision student temper shank muscle fatigue degree after the different time under different loads to, embody student's muscle fatigue law directly perceivedly. The accompanying negative result is that the trainer cannot adjust the exercise intensity of the student in time according to the fatigue condition of the leg of the student, and then the leg muscle of the student is pulled.
Therefore, it is highly desirable to find a leg exercising device which can monitor the muscle fatigue degree of the legs of students exercising for different time under different loads in real time and visually reflect the muscle fatigue rule of the students.
Disclosure of Invention
In order to solve the problems, the invention provides a leg exercising device which comprises a pull belt, a base, a counterweight frame and a control device, wherein the counterweight frame is arranged at one end of the base;
the multi-stage counterweight device and the gravity sensor are arranged on the counterweight frame, the upper end of the multi-stage counterweight device is connected with a pull rope, the top of the counterweight frame is provided with a pulley, the free end of the pull rope is connected with the pulling device by bypassing the pulley, and the gravity sensor is connected with the control device;
the drawing device is connected with a pen box, a rotary table is rotationally connected in the pen box, a plurality of insertion holes are formed in the rotary table, a scribing pen is inserted into the insertion holes, the bottom end of the pen box is open, the scribing pen can penetrate through the bottom end of the pen box and extend to the lower side of the pen box, a limiting pressing sheet is arranged at the top end of the scribing pen, a first elastic piece is sleeved on a part, located between the limiting pressing sheet and the rotary table, of the scribing pen, a first driving device and a second driving device are further arranged in the pen box, an output shaft of the first driving device is located above any one limiting pressing sheet, the scribing pen corresponding to the limiting pressing sheet can move along the insertion holes under the driving of the first driving device, an output shaft of the second driving device is connected with the center of the rotary table, the rotary table can rotate under the driving of the second driving device, and the first driving device and the second driving device are respectively connected with a control device;
one side of base is equipped with the winding roller shell, is equipped with two first pivots in the winding roller shell, and two first pivots are used for the drive initiative respectively to wind the roller and driven around the roller rotatory, and the winding has the recording paper on the driven roller of winding, and the free end winding of recording paper is on the initiative roller of winding, and the top of recording paper is located to the pen box for the marking pen can mark a line on the recording paper.
In an embodiment of the present invention, the leg exercising device further includes an upright, the weight rack and the upright are respectively disposed at two ends of the base, and the pulling device is located between the upright and the weight rack.
In one embodiment of the invention, the pull strap is hinged to the head end of the pulling device. The head end of the pulling device refers to one end of the pulling device close to the upright post.
In one embodiment of the invention, the free end of the pull cord is secured to the trailing end of the pulling device around a pulley. The tail end of the pulling device refers to one end of the pulling device close to the counterweight housing.
In one embodiment of the present invention, a plurality of insertion holes are formed along a circumferential direction of the turntable.
In one embodiment of the present invention, the first driving device and the second driving device are fixedly connected with the inner wall of the pen box through a connecting rod.
In one embodiment of the invention, the first rotating shaft is rotatably connected with the inner wall of the roller shell.
In one embodiment of the present invention, the first rotating shafts are driven by a driving mechanism to rotate synchronously.
In one embodiment of the invention, the driving winding roller and the driven winding roller are respectively and coaxially fixed at the outer sides of the two first rotating shafts.
In one embodiment of the present invention, the pull rope is a steel wire rope.
In one embodiment of the present invention, the first elastic member is a spring.
In one embodiment of the invention, the first driving device is a cylinder.
In one embodiment of the present invention, the second driving device is a pen rotating motor.
In one embodiment of the invention, the control device is a PLC controller.
In an embodiment of the present invention, the pulling device includes a first dovetail sliding groove and a first dovetail sliding bar, the first dovetail sliding groove is fixed on the base, the first dovetail sliding bar is slidably connected in the first dovetail sliding groove, one end of the pull belt is movably connected with the first dovetail sliding bar, and the free end of the pull rope is connected with the first dovetail sliding bar by bypassing the pulley.
In one embodiment of the invention, the draw strap is hinged to the head end of the first dovetail slide. The head end of the first dovetail slide means the end of the first dovetail slide near the upright post.
In one embodiment of the invention, the free end of the pull cord is fixedly connected to the tail end of the first dovetail slide bar around the pulley. The tail end of the first dovetail slide bar refers to one end of the first dovetail slide bar close to the weight frame.
In one embodiment of the present invention, a limit stop is provided at a head end of the first dovetail slide.
In one embodiment of the invention, the pulling device further comprises two protection plates fixed on the base.
In an embodiment of the present invention, the pulling device further includes a first transmission gear, a second transmission gear, a third transmission gear, a second dovetail slide bar, a first rack, a second dovetail slide groove, and a second rack, wherein the second rack is fixed on the second dovetail slide bar, the first rack is fixed on the first dovetail slide bar, the second dovetail slide bar is slidably connected in the second dovetail slide groove, the second dovetail slide groove is fixed on the base, the first transmission gear is engaged with the first rack, the second transmission gear is engaged with the first transmission gear, the third transmission gear is engaged with the second transmission gear, the second rack is engaged with the third transmission gear, an L-shaped connecting plate is fixed on the second rack, and the L-shaped connecting plate is connected to the pen box.
In one embodiment of the invention, the first transmission gear, the second transmission gear, the third transmission gear, the second dovetail slide bar, the first rack, the second dovetail slide groove and the second rack are all arranged on the inner sides of two protection plates, one protection plate is provided with a strip-shaped hole, and the L-shaped connecting plate extends to the outer side of the corresponding protection plate through the strip-shaped hole and is connected with the pen box.
In one embodiment of the present invention, the first transmission gear, the second transmission gear and the third transmission gear are rotatably mounted on an inner wall of the guard plate through a second rotating shaft.
In an embodiment of the present invention, the second dovetail sliding groove is fixedly connected to the base through a bracket.
In one embodiment of the invention, the second toothed rack meshes below the third transmission gear.
In one embodiment of the present invention, an L-shaped connecting plate is fixed to a rear end of the second rack.
In an embodiment of the present invention, the multi-stage counterweight device includes a locking pin, a plurality of counterweights, and a T-shaped connecting pin, wherein the counterweights are sequentially stacked inside the counterweight frame, the counterweights are provided with connecting holes from top to bottom, the counterweights are provided with first pin holes in a horizontal direction, the T-shaped connecting pin is provided with second pin holes from top to bottom, the T-shaped connecting pin is inserted into the connecting holes of the counterweights, and the locking pin is inserted into the first pin hole of any one of the counterweights and the second pin hole of the T-shaped connecting pin.
In one embodiment of the invention, the gravity sensor is mounted below the lowermost counterweight.
In one embodiment of the present invention, a pull rope is connected to an upper end of the T-shaped connecting pin.
In one embodiment of the invention, two limiting slide rods are arranged on the inner side of the counterweight frame, limiting slide holes are formed in two sides of the counterweight block, and the limiting slide rods penetrate through the limiting slide holes.
In an embodiment of the present invention, the driving mechanism includes a driven sprocket, a transmission chain, a third driving device and a driving sprocket, the driving sprocket and the driven sprocket are respectively fixed on the corresponding first rotating shafts, the driving sprocket and the driven sprocket realize transmission by winding the transmission chain, and an output shaft of the third driving device is connected to the first rotating shaft on the driving sprocket, so that the recording paper can be wound under the driving of the third driving device.
In one embodiment of the invention, the third drive is fixed to the outer wall of the winding roller shell.
In one embodiment of the present invention, the drive sprocket and the driven sprocket are each fixed to a respective first shaft end.
In one embodiment of the invention, the third drive device is a winding motor.
In an embodiment of the present invention, a support plate is further disposed in the winding roller housing, the support plate is located below the recording paper, L-shaped clamp plates are fixed to two ends of the support plate, and one side of each L-shaped clamp plate is located above the recording paper.
In one embodiment of the invention, the support plate is fixed to the inner wall of the winding roller shell.
In one embodiment of the invention, the driving winding roller is provided with a strip-shaped notch along the length direction, the first rotating shaft is connected with a connecting column, one end of the connecting column, which is not connected with the first rotating shaft, is provided with a rubber pressing block, the rubber pressing block abuts against the inner wall of the driving winding roller, the inner side of the rubber pressing block is provided with a limiting groove, the connecting column is inserted into the limiting groove, and the part of the connecting column, which is positioned between the rubber pressing block and the first rotating shaft, is sleeved with a second elastic piece.
In one embodiment of the present invention, the second elastic member is a spring.
In one embodiment of the invention, the driving winding roller and the driven winding roller are both of a sleeve structure.
In one embodiment of the invention, the inner walls of the driving winding roller and the driven winding roller are connected with the first rotating shaft through keys and key slots.
In one embodiment of the present invention, the recording paper is provided with time scale lines.
In one embodiment of the present invention, the time scale lines are arranged in a winding direction of the recording paper.
In an embodiment of the present invention, the limiting pressing plate is provided with a groove matching with the output shaft of the first driving device.
The invention also provides application of the leg exercise device in physical education and training.
The technical scheme of the invention has the following advantages:
the invention provides a leg exercise device for physical education and training, which comprises a draw belt, a base, a counterweight frame and a control device, wherein the counterweight frame is arranged at one end of the base, a pulling device is arranged above the base, one end of the draw belt is movably connected with the pulling device, the counterweight frame is provided with a multi-stage counterweight device and a gravity sensor, the upper end of the multi-stage counterweight device is connected with a pull rope, the top of the counterweight frame is provided with a pulley, the free end of the pull rope bypasses the pulley to be connected with the pulling device, the gravity sensor is connected with the control device, the pulling device is connected with a pen box, the pen box is rotatably connected with a turntable, the turntable is provided with a plurality of jacks, a marking pen is inserted into the jacks, the bottom end of the pen box is open, the marking pen can penetrate through the bottom end of the pen box and extend to the lower part of the pen box, the top end of the marking pen is provided with a limiting pressing sheet, and the part of the marking pen, which is positioned between the limiting pressing sheet and the turntable, is sleeved with a first elastic piece, the pen box is also internally provided with a first driving device and a second driving device, an output shaft of the first driving device is positioned above any one limiting pressing sheet, so that a scribing pen corresponding to the limiting pressing sheet can move along the jack under the driving of the first driving device, an output shaft of the second driving device is connected with the center of the turntable, so that the turntable can rotate under the driving of the second driving device, the first driving device and the second driving device are respectively connected with the control device, one side of the base is provided with a winding roller shell, two first rotating shafts are arranged in the winding roller shell and are respectively used for driving the driving winding roller and the driven winding roller to rotate, recording paper is wound on the driven winding roller, the free end of the recording paper is wound on the driving winding roller, and the pen box is arranged above the recording paper, so that the scribing pen can scribe lines on the recording paper; this shank is tempered device can come out the audio-visual manifestation of trajectory on the writing paper with student's the shank motion circumstances (the slope of trajectory on the writing paper, length and the time point and the time length homoenergetic that appear the horizontal line put forward the fatigue degree and the tolerance ability of bearing a burden of the student of department), and, when switching different burden ranks, this shank is tempered the device and can be responded to different paintbrushes and carry out the trajectory and draw, consequently, this shank is tempered the device and can real-time supervision student temper the tired degree of shank muscle after the different time under different burden, and, the tired law of muscle of the audio-visual manifestation student, thereby help mr to know the adaptation condition of this student when multiple burden rank switches, so that help mr appoints more scientific training plan for the student.
Furthermore, the leg exercising device also comprises an upright post, the counterweight frame and the upright post are respectively arranged at two ends of the base, and the pulling device is positioned between the upright post and the counterweight frame; the upright column can be held by students, and the legs of the students can exert force conveniently.
Furthermore, the pulling device comprises a first dovetail sliding groove and a first dovetail sliding strip, the first dovetail sliding groove is fixed on the base, the first dovetail sliding strip is connected in the first dovetail sliding groove in a sliding manner, one end of the pull belt is movably connected with the first dovetail sliding strip, and the free end of the pull rope is connected with the first dovetail sliding strip by bypassing the pulley; the setting of first forked tail spout and first forked tail draw runner can guarantee that the pulling device is along base length direction reciprocating motion all the time.
Furthermore, a limit stop is arranged at the head end of the first dovetail slide bar; the setting of limit stop can prevent that first forked tail draw runner from breaking away from first forked tail spout because of stay cord reverse tension under the idle state that non-pulling was tempered.
Furthermore, the pulling device further comprises a first transmission gear, a second transmission gear, a third transmission gear, a second dovetail slide bar, a first rack, a second dovetail slide groove and a second rack, wherein the second rack is fixed on the second dovetail slide bar, the first rack is fixed on the first dovetail slide bar, the second dovetail slide bar is connected in the second dovetail slide groove in a sliding manner, the second dovetail slide groove is fixed on the base, the first transmission gear is meshed with the first rack, the second transmission gear is meshed with the first transmission gear, the third transmission gear is meshed with the second transmission gear, the second rack is meshed with the third transmission gear, an L-shaped connecting plate is fixed on the second rack, and the L-shaped connecting plate is connected with the pen box; when the first dovetail slide bar reciprocates along the length direction of the base, the first rack bar can be driven to reciprocate together, so that the first transmission gear, the second transmission gear and the third transmission gear are driven to respectively move, the second rack bar is driven to realize short-distance reciprocating motion, and a marking pen in the pen box is driven to draw a track on the recording paper; this arrangement makes the reciprocating motion track length of the pulling device far less than the pulling step length of the student during the pulling exercise, thereby reducing the use width of the recording paper.
Furthermore, the multistage counterweight device comprises a locking bolt, a plurality of counterweight blocks and a T-shaped connecting pin, wherein the counterweight blocks are sequentially stacked on the inner side of the counterweight frame, the counterweight blocks are provided with connecting holes from top to bottom, the counterweight blocks are provided with first pin holes in the horizontal direction, the T-shaped connecting pin is provided with second pin holes from top to bottom, the T-shaped connecting pin is inserted into the connecting holes of the counterweight blocks, and the locking bolt is inserted into the first pin hole of any one counterweight block and the second pin hole of the T-shaped connecting pin; when the balance weight grade needs to be manually switched, the balance weight switching of a certain grade can be realized by manually inserting the locking bolt into the first pin hole of a certain balance weight block and the second pin hole of the T-shaped connecting pin.
Furthermore, two limiting slide rods are arranged on the inner side of the counterweight frame, limiting slide holes are formed in two sides of the counterweight block, and the limiting slide rods penetrate through the limiting slide holes; the setting up of spacing slide bar and spacing slide opening makes the balancing weight up-and-down motion more steady.
Furthermore, a supporting plate is further arranged in the winding roller shell and located below the recording paper, L-shaped clamping plates are fixed at two ends of the supporting plate, and one edge of each L-shaped clamping plate is located above the recording paper; the cooperation of the supporting plate and the L-shaped clamping plate can ensure that the lower recording paper part of the marking pen can be stably supported on the supporting plate when the marking pen draws a track line; the fixed gap between the L-shaped clamping plate and the supporting plate can enable the recording paper below the marking pen to be always at the same height for uniform winding.
Furthermore, a strip-shaped notch is formed in the driving winding roller along the length direction, a connecting column is connected to the first rotating shaft, a rubber pressing block is arranged at one end, which is not connected with the first rotating shaft, of the connecting column, the rubber pressing block abuts against the inner wall of the driving winding roller, a limiting groove is formed in the inner side of the rubber pressing block, the connecting column is inserted into the limiting groove, and a second elastic piece is sleeved on the part, located between the rubber pressing block and the first rotating shaft, of the connecting column; the device can realize the quick fixation of the winding end of the recording paper, when the next round of training record is carried out, the recording paper trained last time needs to be torn, the torn recording paper has a new end, at the moment, the end only needs to be inserted into the strip-shaped notch, the rubber pressing block is pressed towards the first rotating shaft direction, then the end of the recording paper is placed between the rubber pressing block and the inner wall of the active winding roller, the rubber pressing block is loosened, and the end of the recording paper can be extruded by the rubber pressing block to be fixed on the inner wall of the active winding roller (in the pressing and resetting processes of the rubber pressing block, the connecting column is always positioned in the limiting groove); in order to facilitate the pressing of the rubber press block, a pressing handle can be arranged on the side end face of the rubber press block.
Furthermore, time scale marks are arranged on the recording paper; the arrangement of the time scale lines enables a teacher to observe the relationship between the pulling movement track line of the student and the movement time more visually.
Furthermore, a groove matched with an output shaft of the first driving device is formed in the limiting pressing sheet; the arrangement of the groove enables the connection between the output shaft of the first driving device and the limiting pressing sheet to be tighter.
Drawings
FIG. 1: a front view of one embodiment of the leg exercise apparatus of the present invention.
FIG. 2: a left side view of one embodiment of the leg exercise apparatus of the present invention.
FIG. 3: a schematic partial structure of one embodiment of the leg exercise apparatus of the present invention.
FIG. 4: the invention discloses a schematic internal structure diagram of one embodiment of a pen box of a leg exercise device.
FIG. 5: a schematic view of the internal structure of one embodiment of the active winding roller of the leg exercise apparatus of the present invention.
In fig. 1 to 5, a vertical column 1, a counterweight frame 2, a base 3, a protection plate 4, a second transmission gear 5, a limit stop 6, a pull belt 7, a first transmission gear 8, a second dovetail slide bar 9, a first rack 10, a second dovetail slide groove 11, a bracket 12, a first dovetail slide groove 13, a first dovetail slide bar 14, a pulley 15, a pull rope 16, a third transmission gear 17, a second rack 18, a strip-shaped hole 19, a second rotating shaft 20, an L-shaped connecting plate 21, a roller shell 22, a driving winding roller 23, a time scale line 24, an L-shaped clamp plate 25, a first driving device 26, a driven winding roller 27, a driven sprocket 28, a second driving device 29, a support plate 30, a transmission chain 31, a third driving device 32, a driving sprocket 33, a strip-shaped notch 34, a locking bolt 35, a second pin hole 36, a counter weight 37, a T-shaped connecting pin 38, a first pin hole 39, a limit slide bar 40, a connecting rod 41, a limit pressing sheet 42, The pen box comprises a first elastic piece 43, a jack 44, a marking pen 45, a turntable 46, a groove 47, a pen box 48, a rubber pressing piece 49, a connecting column 50, a limiting groove 51, a first rotating shaft 52, a key groove 53, a key 54, recording paper 55, a second elastic piece 56, a pulling device 57, a multi-stage counterweight device 58 and a driving mechanism 59.
Detailed Description
The invention will be further elucidated with reference to the embodiments and the drawings.
Example 1: device is tempered with shank to sports teaching and training
As shown in fig. 1 to 5, the present embodiment provides a leg exercise device for physical education and training, the leg exercise device includes a pull belt 7, a base 3, a counterweight frame 2 and a control device, the counterweight frame 2 is disposed at one end of the base 3, a pulling device 57 is disposed above the base 3, and one end of the pull belt 7 is movably connected to the pulling device 57;
the counterweight frame 2 is provided with a multi-stage counterweight device 58 and a gravity sensor, the upper end of the multi-stage counterweight device 58 is connected with a pull rope 16, the top of the counterweight frame 2 is provided with a pulley 15, the free end of the pull rope 16 bypasses the pulley 15 and is connected with a pulling device 57, and the gravity sensor is connected with a control device;
the drawing device 57 is connected with a pencil box 48, the pencil box 48 is rotationally connected with a rotary disc 46, the rotary disc 46 is provided with a plurality of insertion holes 44, scribing pens 45 are inserted into the insertion holes 44, the bottom end of the pencil box 48 is open, so that the scribing pens 45 can penetrate through the bottom end of the pencil box 48 and extend to the lower part of the bottom end, the top end of the scribing pen 45 is provided with a limiting pressing sheet 42, the part of the scribing pen 45, which is positioned between the limiting pressing sheet 42 and the rotary disc 46, is sleeved with a first elastic piece 43, the pencil box 48 is also internally provided with a first driving device 26 and a second driving device 29, the output shaft of the first driving device 26 is positioned above any limiting pressing sheet 42, so that the scribing pen 45 corresponding to the limiting pressing sheet 42 can move along the insertion holes 44 under the driving of the first driving device 26, the output shaft of the second driving device 29 is connected with the center of the rotary disc 46, so that the rotary disc 46 can rotate under the driving of the second driving device 29, the first drive device 26 and the second drive device 29 are each connected to a control device;
the scribing pen is characterized in that a roller shell 22 is arranged on one side of the base 3, two first rotating shafts 52 are arranged in the roller shell 22, the two first rotating shafts 52 are respectively used for driving the driving winding roller 23 and the driven winding roller 27 to rotate, recording paper 55 is wound on the driven winding roller 27, the free end of the recording paper 55 is wound on the driving winding roller 23, and the pen box 48 is arranged above the recording paper 55, so that the scribing pen 45 can scribe lines on the recording paper 55. The angular difference between the individual scribe pens 45 corresponds to the gravitational difference between the weighted levels of the multi-level weight arrangement 58. When the multi-stage weight device 58 of the leg exercise device is manually switched to a certain level of weight (e.g., 10kg), the control device receives a corresponding gravity signal sensed by the gravity sensor, and according to the received signal, first controls the output shaft of the first driving device 26 to retract to disengage the limiting pressing sheet 42, and simultaneously controls the second driving device 29 to reset to the zero position, and then controls the second driving device 29 to drive the rotary disc 46 to rotate to an angle corresponding to the manually switched weight level (e.g., 10kg corresponding to 60 °, 20kg corresponding to 120 °, 30kg corresponding to 180 ° … … 60kg corresponding to 360 °) so that the scribing pen 45 corresponding to the angle (60 ° position) is located below the first driving device 26, and when the rotary disc 46 is rotated to the proper position, the control device controls the output shaft of the first driving device 26 to press down the limiting pressing sheet 42 at the top end of the scribing pen 45, so that the scribing pen 45 corresponding to the angle (60 ° position) extends downward to contact with the recording paper 55, at this time, when the leg of the student drives the drawstring 7 to pull back and forth (the drawstring 7 can be bound on the leg of the student), the pulling device 57 reciprocates along the length direction of the base 3, so as to drive the scribing pen 45 with a corresponding angle to draw a track on the recording paper 55 (since the driving mechanism drives the recording paper 55 to be uniformly wound on the active winding roller 23, the track drawn by the scribing pen 45 is just a motion track line formed by the reciprocating motion along the length direction of the base 3 and the combined motion track line along the winding direction of the active winding roller 23), the muscle fatigue degrees of the leg of the student exercising for different times under different loads are monitored in real time, and the muscle fatigue rules of the student are visually reflected; when the multi-stage counterweight device 58 of the leg exercising device is manually switched to another level of counterweight (e.g. 30kg), the control device receives a corresponding gravity signal sensed by the gravity sensor, and according to the received signal, first controls the output shaft of the first driving device 26 to retract to disengage the limiting pressing sheet 42, and controls the second driving device 29 to reset to the zero position, and then controls the second driving device 29 to drive the rotary disk 46 to rotate to an angle (180 °) corresponding to the manually switched counterweight level, so that the marking pen 45 at the 180 ° position is located below the first driving device 26, and when the rotary disk 46 rotates to the proper position, the control device controls the output shaft of the first driving device 26 to press the limiting pressing sheet 42 at the top end of the marking pen 45 downward, so that the marking pen 45 at the 180 ° position extends downward to contact with the recording paper 55, and at this time, when the student's leg drives the pull belt 7 to pull back and forth, the pulling device 57 reciprocates along the length direction of the base 3, thereby driving the marking pen 45 with a corresponding angle to draw a track on the recording paper 55; this is repeated until the student ends the exercise cycle, and the complete weight training fatigue trajectory for the student is recorded on the chart 55. The marker 45 at different angular positions can be distinguished by using markers 45 of different colors.
Preferably, the leg exercising device further comprises a vertical column 1, the weight frame 2 and the vertical column 1 are respectively arranged at two ends of the base 3, and the pulling device 57 is positioned between the vertical column 1 and the weight frame 2. The upright column 1 can be held by students, and the legs of the students can exert force conveniently.
Preferably, the pull strap 7 is hinged to the head end of the pulling means 57. The head end of the pulling device 57 refers to the end of the pulling device 57 close to the upright 1.
Preferably, the free end of the pull cord 16 is fixedly connected to the trailing end of the pulling device 57 via the pulley 15. The trailing end of the pulling device 57 refers to the end of the pulling device 57 near the weight rack 2.
Preferably, a plurality of insertion holes 44 are formed along the circumferential direction of the turntable 46.
Preferably, the first driving device 26 and the second driving device 29 are fixedly connected with the inner wall of the pen box 48 through a connecting rod 41.
Preferably, the first rotating shaft 52 is rotatably connected to the inner wall of the roll housing 22.
Preferably, the first rotating shaft 52 is driven by a driving mechanism to rotate synchronously.
Preferably, the driving winding roller 23 and the driven winding roller 27 are coaxially fixed outside the two first rotating shafts 52, respectively.
Preferably, the pull cord 16 is a steel cord.
Preferably, the first elastic member 43 is a spring.
Preferably, the first driving device 26 is a cylinder.
Preferably, the second driving device 29 is a pen rotating motor.
Preferably, the control device is a PLC controller.
Preferably, the pulling device 57 includes a first dovetail sliding groove 13 and a first dovetail slide bar 14, the first dovetail sliding groove 13 is fixed on the base 3, the first dovetail slide bar 14 is slidably connected in the first dovetail sliding groove 13, one end of the pull belt 7 is movably connected with the first dovetail slide bar 14, and the free end of the pull rope 16 is connected with the first dovetail slide bar 14 by bypassing the pulley 15. The arrangement of the first dovetail slide groove 13 and the first dovetail slide bar 14 can ensure that the pulling device 57 always reciprocates along the length direction of the base 3.
Preferably, the pull strap 7 is hinged to the head end of the first dovetail slide 14. The head end of the first dovetail slide 14 refers to an end of the first dovetail slide 14 near the upright 1.
Preferably, the free end of the pull rope 16 is fixedly connected to the tail end of the first dovetail slide 14 via a pulley 15. The tail end of the first dovetail slide 14 refers to an end of the first dovetail slide 14 close to the weight frame 2.
Preferably, the head end of the first dovetail slide 14 is provided with a limit stop 6. The limit stopper 6 is provided to prevent the first dovetail slide 14 from being separated from the first dovetail slide groove 13 by a reverse tensile force of the draw cord 16 in an idle state of the non-pulling exercise.
Preferably, the pulling device 57 further comprises two protection plates 4 fixed on the base 3.
Preferably, the pulling device 57 further includes a first transmission gear 8, a second transmission gear 5, a third transmission gear 17, a second dovetail slide bar 9, a first rack 10, a second dovetail slide groove 11, and a second rack 18, wherein the second rack 18 is fixed on the second dovetail slide bar 9, the first rack 10 is fixed on the first dovetail slide bar 14, the second dovetail slide bar 9 is slidably connected in the second dovetail slide groove 11, the second dovetail slide groove 11 is fixed on the base 3, the first transmission gear 8 is engaged with the first rack 10, the second transmission gear 5 is engaged with the first transmission gear 8, the third transmission gear 17 is engaged with the second transmission gear 5, the second rack 18 is engaged with the third transmission gear 17, an L-shaped connecting plate 21 is fixed on the second rack 18, and the L-shaped connecting plate 21 is connected with the pen box 48. The transmission ratio between the first transmission gear 8 and the second transmission gear 5 can be set as desired. When the first dovetail slide bar 14 reciprocates along the length direction of the base 3, the first rack 10 can be driven to reciprocate together, so that the first transmission gear 8, the second transmission gear 5 and the third transmission gear 17 are driven to move respectively, the second rack 18 is driven to realize short-distance reciprocating motion, and the marking pen 45 in the pen box 48 is driven to draw a track on the recording paper 55. This arrangement makes the reciprocating track length of the pulling means 57 much shorter than the pulling step length of the student in the pulling exercise, thereby reducing the use width of the recording paper 55.
Preferably, the first transmission gear 8, the second transmission gear 5, the third transmission gear 17, the second dovetail slide bar 9, the first rack 10, the second dovetail slide groove 11 and the second rack 18 are all arranged on the inner sides of the two protection plates 4, one of the protection plates 4 is provided with a strip-shaped hole 19, and the L-shaped connection plate 21 extends to the outer side of the corresponding protection plate 4 through the strip-shaped hole 19 and is connected with the pen box 48.
Preferably, the first transmission gear 8, the second transmission gear 5 and the third transmission gear 17 are rotatably mounted on the inner wall of the protection plate 4 through a second rotating shaft 20.
Preferably, the second dovetail sliding groove 11 is fixedly connected to the base 3 through a bracket 12.
Preferably, the second toothed rack 18 engages underneath the third transmission gear 17.
Preferably, an L-shaped connecting plate 21 is fixed to the tail end of the second rack 18.
Preferably, the multistage counterweight device 58 includes a locking bolt 35, a plurality of counterweights 37 and a T-shaped connecting pin 38, the counterweights 37 are sequentially stacked on the inner side of the counterweight frame 2, connecting holes are formed in the counterweights 37 from top to bottom, first pin holes 39 are formed in the counterweights 37 in the horizontal direction, second pin holes 36 are formed in the T-shaped connecting pin 38 from top to bottom, the T-shaped connecting pin 38 is inserted into the connecting hole of the counterweight 37, and the locking bolt 35 is inserted into the first pin hole 39 of any one of the counterweights 37 and the second pin hole 36 of the T-shaped connecting pin 38. When the counterweight level needs to be manually switched, the counterweight switching of a certain level can be realized by manually inserting the locking bolt 35 into the first pin hole 39 of a certain counterweight block 37 and the second pin hole 36 of the T-shaped connecting pin 38.
Preferably, the gravity sensor is mounted below the lowermost weight 37.
Preferably, the pull rope 16 is connected to the upper end of the T-shaped connecting pin 38.
Preferably, two limiting slide rods 40 are arranged on the inner side of the counterweight frame 2, limiting slide holes are formed in two sides of the counterweight block 37, and the limiting slide rods 40 penetrate through the limiting slide holes. The arrangement of the limiting slide rod 40 and the limiting slide hole enables the counterweight block 37 to move up and down more stably.
Preferably, the driving mechanism 59 includes a driven sprocket 28, a transmission chain 31, a third driving device 32 and a driving sprocket 33, the driving sprocket 33 and the driven sprocket 28 are respectively fixed on the corresponding first rotating shafts 52, the driving sprocket 33 and the driven sprocket 28 realize transmission by winding the transmission chain 31, and an output shaft of the third driving device 32 is connected with the first rotating shaft 52 on the driving sprocket 33, so that the recording paper 55 can be wound and collected under the driving of the third driving device 32.
Preferably, the third drive 32 is fixed to the outer wall of the winding roller shell 22.
Preferably, the driving sprocket 33 and the driven sprocket 28 are fixed to the ends of the corresponding first rotating shafts 52, respectively.
Preferably, the third driving device 32 is a winding motor.
Preferably, a support plate 30 is further provided in the winding roller housing 22, the support plate 30 is located below the recording paper 55, L-shaped clamp plates 25 are fixed to both ends of the support plate 30, and one side of the L-shaped clamp plate 25 is located above the recording paper 55. The cooperation of the support plate 30 and the L-shaped clamp plate 25 enables the portion of the recording paper 55 below the scribing pen 45 to be stably supported on the support plate 30 when the scribing pen 45 performs the track line drawing. The fixed clearance between the L-clamp plate 25 and the support plate 30 enables the portion of the recording paper 55 below the marker 45 to be wound at a constant speed at the same height.
Preferably, the support plate 30 is fixed to the inner wall of the roll housing 22.
Preferably, the driving winding roller 23 is provided with a strip-shaped notch 34 along the length direction, the first rotating shaft 52 is connected with a connecting column 50, one end of the connecting column 50, which is not connected with the first rotating shaft 52, is provided with a rubber pressing block 49, the rubber pressing block 49 abuts against the inner wall of the driving winding roller 23, the inner side of the rubber pressing block 49 is provided with a limiting groove 51, the connecting column 50 is inserted into the limiting groove 51, and the part of the connecting column 50, which is located between the rubber pressing block 49 and the first rotating shaft 52, is sleeved with a second elastic member 56. The arrangement can realize the quick fixation of the winding end of the recording paper 55, when the next round of training record is carried out, the recording paper 55 trained last time needs to be torn, the torn recording paper 55 has a new end, at the moment, the end only needs to be inserted into the strip-shaped notch 34, the rubber pressing block 49 is pressed towards the direction of the first rotating shaft 52, then the end of the recording paper 55 is placed between the rubber pressing block 49 and the inner wall of the driving winding roller 23, the rubber pressing block 49 is loosened, and at the moment, the end of the recording paper 55 can be extruded by the rubber pressing block 49 to be fixed on the inner wall of the driving winding roller 23 (in the pressing and resetting processes of the rubber pressing block 49, the connecting column 50 is always positioned in the limiting groove 51). In order to facilitate pressing of the rubber presser 49, a pressing handle may be provided on the side end surface of the rubber presser 49.
Preferably, the second elastic member 56 is a spring.
Preferably, the driving winding roller 23 and the driven winding roller 27 are both of a sleeve structure.
Preferably, the inner walls of the driving winding roller 23 and the driven winding roller 27 are connected with the first rotating shaft 52 through a key 54 and a key groove 53.
Preferably, the recording paper 55 is provided with time scale marks 24. The time scale line 24 is arranged so that the teacher can more intuitively observe the relationship between the pulling movement track line of the student and the movement time.
Preferably, the time scale lines 24 are provided along the winding direction of the recording paper 55.
Preferably, the limiting pressing sheet 42 is provided with a groove 47 matched with the output shaft of the first driving device 26. The provision of the recess 47 provides a tighter connection between the output shaft of the first drive means 26 and the limiting pressure plate 42.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. The leg exercising device is characterized by comprising a pull belt, a base, a counterweight frame and a control device, wherein the counterweight frame is arranged at one end of the base, a pulling device is arranged above the base, and one end of the pull belt is movably connected with the pulling device;
the multi-stage counterweight device and the gravity sensor are arranged on the counterweight frame, the upper end of the multi-stage counterweight device is connected with a pull rope, the top of the counterweight frame is provided with a pulley, the free end of the pull rope is connected with the pulling device by bypassing the pulley, and the gravity sensor is connected with the control device;
the drawing device is connected with a pen box, a rotary table is rotationally connected in the pen box, a plurality of insertion holes are formed in the rotary table, a scribing pen is inserted into the insertion holes, the bottom end of the pen box is open, the scribing pen can penetrate through the bottom end of the pen box and extend to the lower side of the pen box, a limiting pressing sheet is arranged at the top end of the scribing pen, a first elastic piece is sleeved on a part, located between the limiting pressing sheet and the rotary table, of the scribing pen, a first driving device and a second driving device are further arranged in the pen box, an output shaft of the first driving device is located above any one limiting pressing sheet, the scribing pen corresponding to the limiting pressing sheet can move along the insertion holes under the driving of the first driving device, an output shaft of the second driving device is connected with the center of the rotary table, the rotary table can rotate under the driving of the second driving device, and the first driving device and the second driving device are respectively connected with a control device;
a winding roller shell is arranged on one side of the base, two first rotating shafts are arranged in the winding roller shell and are respectively used for driving the driving winding roller and the driven winding roller to rotate, recording paper is wound on the driven winding roller, the free end of the recording paper is wound on the driving winding roller, and the pen box is arranged above the recording paper, so that a scribing pen can scribe lines on the recording paper;
the pulling device comprises a first dovetail sliding groove and a first dovetail sliding strip, the first dovetail sliding groove is fixed on the base, the first dovetail sliding strip is connected in the first dovetail sliding groove in a sliding mode, one end of the pull belt is movably connected with the first dovetail sliding strip, and the free end of the pull rope is connected with the first dovetail sliding strip by bypassing the pulley;
the pulling device further comprises a first transmission gear, a second transmission gear, a third transmission gear, a second dovetail slide bar, a first rack, a second dovetail sliding groove and a second rack, wherein the second rack is fixed on the second dovetail slide bar, the first rack is fixed on the first dovetail slide bar, the second dovetail slide bar is connected in the second dovetail sliding groove in a sliding mode, the second dovetail sliding groove is fixed on the base, the first transmission gear is meshed with the first rack, the second transmission gear is meshed with the first transmission gear, the third transmission gear is meshed with the second transmission gear, the second rack is meshed with the third transmission gear, an L-shaped connecting plate is fixed on the second rack, and the L-shaped connecting plate is connected with the pen box.
2. The leg exercise apparatus of claim 1 wherein the head end of the first dovetail slide is provided with a limit stop.
3. The leg exercising apparatus according to claim 1, wherein the multi-stage weight device comprises a locking pin, a plurality of weight blocks and a T-shaped connecting pin, wherein the weight blocks are stacked inside the weight frame in sequence, the weight blocks have a connecting hole from top to bottom, the weight blocks have first pin holes in a horizontal direction, the T-shaped connecting pin has second pin holes from top to bottom, the T-shaped connecting pin is inserted into the connecting hole of the weight block, and the locking pin is inserted into the first pin hole of any one of the weight blocks and the second pin hole of the T-shaped connecting pin.
4. The leg exercising apparatus according to claim 3, wherein the weight frame has two limiting slide bars disposed on the inner side thereof, and wherein the weight block has limiting slide holes formed on both sides thereof, the limiting slide bars passing through the limiting slide holes.
5. The leg exercise apparatus of claim 1, wherein a support plate is further provided in the roller housing, the support plate being positioned below the recording sheet, the support plate having L-shaped clips secured to opposite ends thereof, one of the L-shaped clips being positioned above the recording sheet.
6. The leg exercising device according to claim 1, wherein the driving winding roller has a strip-shaped notch along a length direction, the first rotating shaft is connected with a connecting column, one end of the connecting column, which is not connected with the first rotating shaft, is provided with a rubber pressing block, the rubber pressing block abuts against an inner wall of the driving winding roller, the inner side of the rubber pressing block is provided with a limiting groove, the connecting column is inserted into the limiting groove, and a part of the connecting column, which is located between the rubber pressing block and the first rotating shaft, is sleeved with a second elastic member.
7. The leg exercise device according to any one of claims 1 to 6, further comprising a vertical column, wherein the weight frame and the vertical column are respectively provided at both ends of the base, and the pulling means is provided between the vertical column and the weight frame; time scale lines are arranged on the recording paper; and the limiting pressing sheet is provided with a groove matched with the output shaft of the first driving device.
8. Use of the leg exercise apparatus of any one of claims 1 to 7 in physical education and training.
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| CN202110757401.1A CN113413576B (en) | 2021-07-05 | 2021-07-05 | Device is tempered with shank to sports teaching and training |
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| CN202110757401.1A CN113413576B (en) | 2021-07-05 | 2021-07-05 | Device is tempered with shank to sports teaching and training |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2243919Y (en) * | 1994-12-21 | 1997-01-01 | 苏建新 | Spring sport body-building device |
| CN112354136A (en) * | 2020-10-23 | 2021-02-12 | 浙江工商职业技术学院 | Exercise auxiliary device based on internet sports fitness exchanges usefulness |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3661158B2 (en) * | 1993-09-03 | 2005-06-15 | 嘉文 宮本 | Portable electronic golf score display device |
| US5656003A (en) * | 1996-09-05 | 1997-08-12 | Mccoy & Robinson, Inc. | Leg exercise apparatus |
| US6527685B2 (en) * | 1999-03-11 | 2003-03-04 | Balanced Body, Inc. | Reformer exercise apparatus |
| US9011291B2 (en) * | 2011-04-14 | 2015-04-21 | Precor Incorporated | Exercise device path traces |
| US10272290B2 (en) * | 2013-03-18 | 2019-04-30 | Preventive Medical Health Care Co., Ltd. | Exercise apparatus |
| CN107930048B (en) * | 2017-03-20 | 2020-06-26 | 深圳市绿航星际太空科技研究院 | Space somatosensory recognition motion analysis system and motion analysis method |
| CN209024929U (en) * | 2018-08-16 | 2019-06-25 | 内蒙古交通设计研究院有限责任公司 | A kind of simple flatness surveying device in highway zonule |
| CN109758157B (en) * | 2019-01-29 | 2020-08-25 | 广州晓康医疗科技有限公司 | Gait rehabilitation training evaluation method and system based on augmented reality |
| CN110448867A (en) * | 2019-09-10 | 2019-11-15 | 瑞海博医疗科技南通有限公司 | A kind of upper limb training device |
| CN110639173B (en) * | 2019-10-22 | 2020-10-09 | 贾思颖 | Junior middle school student's shank muscle science draws and trains device |
| WO2021102295A1 (en) * | 2019-11-21 | 2021-05-27 | Thomas Baer | Systems and methods for detecting running and walking strides and foot strikes |
| CN112057827A (en) * | 2020-09-14 | 2020-12-11 | 马灵娟 | Martial art hand pushing power training device |
| CN112324503B (en) * | 2020-10-30 | 2022-12-20 | 黑龙江图启信息技术工程有限公司 | Scribing robot suitable for tunnel excavation section |
| CN112999589B (en) * | 2021-03-18 | 2021-11-12 | 温州大学瓯江学院 | Physical training device of upper limbs and low limbs convolution |
-
2021
- 2021-07-05 CN CN202110757401.1A patent/CN113413576B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2243919Y (en) * | 1994-12-21 | 1997-01-01 | 苏建新 | Spring sport body-building device |
| CN112354136A (en) * | 2020-10-23 | 2021-02-12 | 浙江工商职业技术学院 | Exercise auxiliary device based on internet sports fitness exchanges usefulness |
Non-Patent Citations (1)
| Title |
|---|
| 电子飞行膝板的设计与实现;王保卫等;《航空计算技术》;20180925(第05期);全文 * |
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