CN104474678B - Laser type hammer throw equipment vibration exercise and information feedback exerciser - Google Patents
Laser type hammer throw equipment vibration exercise and information feedback exerciser Download PDFInfo
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- CN104474678B CN104474678B CN201410841582.6A CN201410841582A CN104474678B CN 104474678 B CN104474678 B CN 104474678B CN 201410841582 A CN201410841582 A CN 201410841582A CN 104474678 B CN104474678 B CN 104474678B
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Abstract
The invention provides a laser type hammer throw equipment vibration exercise and information feedback exerciser, relating to hammer throw exercisers. The exerciser is used for solving the problem that a special hammer throw strength equipment vibration exercise and projection information storing and monitoring device, which can be combined with special hammer throw strength exercise, is used for directly strengthening and stimulating muscle groups of a throwing arm through directly gripping vibration equipment by a sportsman and can be used for effectively exercising and monitoring the best time for fast strength, does not appear yet. The exerciser comprises a weight handholding exercise assembly, a swaying bracket, a main trembling assembly, a vibrating assembly, a fixing plate, an information feedback mechanism and a laser speed sensor, wherein the information feedback mechanism comprises a projector, a video recorder, a wall display screen and a pressure sensor, the swaying bracket comprises a retaining block force measurement assembly, an annular plate, a plurality of retaining rings, a plurality of jacking blocks, a plurality of support legs with of different lengths, a plurality of first springs, a plurality of support leg connecting seats and a plurality of connecting crossbeams, and each support leg further comprises an upper supporting rod, a supporting rod sleeve and a pin shaft. The exerciser is applicable to hammer throw strength exercise.
Description
Technical field
The present invention relates to a kind of hammer apparatus trainer is and in particular to a kind of laser type hammer apparatus vibration training and information
Feedback trainer.
Background technology
The final goal of competitive sport training is to improve athletic specific performance, wins in play.Therefore, possess good
Good specific strength level is the common feature of each elite.Being intimately associated and newly of specific technique and strengthening exercise
Training idea incorporate the important channel being to effectively improve specific strength level.
Modern high level hammer specific strength training, except some conventional snatches, hard draw, throws the means such as weight, also
Be particular about and adopt through the custom-designed strengthening exercise device close to special project action and vibration training device, but existing vibration
Specific strength training device is that player stands are practised on vibration platen, and vibratory stimulation is to athlete's lower limb, hip, waist flesh
Meat group is more notable, and relatively needs the throwing arm muscle group vibratory stimulation that reinforcing stimuluss are trained substantially not enough.This is due to shaking
Dynamic is to conduct upwards via lower limb, hip, waist, trunk, and the vibration reaching throwing arm is partially absorbed, and oscillation intensity decays, and belongs to
In indirect stimulation, training effect is not good enough, and can not measure strength when hammer final force is sold and the speed finally sold,
In track and field throwing event, the assurance of the Best Times of quick strength lacks effective exercise and monitoring means, can be in conjunction with special power
Direct reinforcing stimuluss throwing arm, the training holding effectively exercise and monitoring means of the Best Times of quick strength are vibrated in amount training
Device does not also occur.
Content of the invention
The present invention is to solve prior art not having the strength that can measure when hammer final force is sold and finally sell
Speed device, and in conjunction with hammer specific strength training, the throwing of vibration apparatus direct reinforcing stimuluss can directly be gripped by athlete
Arm muscle group, the hammer specific strength apparatus vibration training that can effectively practise and monitor quick strength Best Times assurance and throwing
Shadow information storage supervising device does not also have produced problem, and then provides a kind of laser type hammer apparatus vibration training and information anti-
Feedback trainer.
The present invention is to solve above-mentioned technical problem to adopt the technical scheme that：Described device includes training hand-held weight group
Part, rock support, electric machine assembly, counterpart, fixed plate and with feedback of the information balance training platform mechanism, rock support bag
Include annular slab, multiple supporting leg and multiple first spring, electric machine assembly includes motor and cam, the bottom of the different supporting leg of each length
Portion is all installed with first spring, and the different supporting leg of multiple length is uniformly arranged in annular slab bottom, anti-with information
The balance training platform mechanism of feedback is arranged on the fixed plate upper surface below annular slab, is installed with electricity near rocking support
Thermomechanical components, the upper described trainer that electric machine assembly is arranged on fixed plate includes training hand-held heavy component, rocks support, main vibration
Assembly, vibration component, fixed plate, feedback of the information mechanism and laser speed sensor, feedback of the information mechanism includes projector, video recording
Machine, body of wall display screen, computer system and pressure transducer, rock support and include block dynamometry assembly, annular slab, multiple gear
The different supporting leg of ring, multiple jack-up block, multiple length, multiple first spring, multiple supporting leg connecting seat and multiple connecting cross beam, often
Individual supporting leg also includes upper rack posts, rod set and bearing pin, and main vibration assembly includes lifting frame, main vibration motor, main vibration motor
Cam and two leads, train hand-held heavy component to be arranged on the upper surface of annular slab, the lower surface of annular slab and level
Face angulation is R, and R is acute angle, views from above what annular slab was looked by least significant end to the most significant end counter clockwise direction of annular slab
The two middle setting has laser speed sensor, and the terminating end discharger of laser speed sensor is located at annular slab inclination side
To vertical centre axis on, the initiating terminal discharger of laser speed sensor is arranged on least significant end and this termination of annular slab
Between the discharger of end, and the spacing between this initiating terminal discharger and this terminating end discharger is L, and the numerical value of L is
50cm, the initiating terminal discharger of laser speed sensor and initiating terminal reception device are correspondingly arranged, laser speed sensor
Terminating end discharger is correspondingly arranged with terminating end reception device, and initiating terminal discharger and terminating end discharger are arranged on ring
The outer edge of shape plate upper surface, initiating terminal reception device and terminating end reception device are arranged on the inward flange of annular slab upper surface
Place, vibration component is fixedly mounted on the hand-held heavy component of training, and block dynamometry assembly is fixedly mounted on annular slab, and block is surveyed
Block pressure transducer is provided with power assembly, pressure transducer is fixedly mounted on the hand-held heavy component of training, block pressure
Sensor and pressure transducer connect a signal input part of computer system respectively, the signal output part of computer system with
The signal input part of projector connects, and the signal output part of projector is connected with the signal input part of videocorder, and projector is to wall
Body display screen projects, and multiple supporting leg connecting seats are uniformly fixedly mounted on the lower surface of annular slab, the top of each upper rack posts with
The bottom of one supporting leg connecting seat is hinged, and two neighboring rod set is fixedly connected by a connecting cross beam, the outside of a rod set
Wall is vertically machined with multiple bearing pins vertically and passes through hole, and upper rack posts bottom passes through bearing pin to be arranged on a rod set through hole by bearing pin
Interior, the bottom of each rod set is installed with baffle ring, and the bottom of each rod set is equipped with first spring, the first spring
Top be fixedly connected with the bottom of rod set, the bottom of the first spring is fixedly mounted in fixed plate, and two leads are all perpendicular
Straight cutting is contained on lifting frame, and the bottom of each lead is fixedly connected with the upper surface of fixed plate, the lower end of each baffle ring
It is vertically arranged with a jack-up block, the bottom of jack-up block is fixedly mounted on lifting frame, main vibration between face and lifting frame
Motor is fixedly mounted in fixed plate, and the rotating shaft of main vibration motor is provided with main vibration motor cam, main vibration motor cam
It is arranged on the lower section of lifting frame.
The invention has the beneficial effects as follows：1st, specific strength exercise of the present invention combines special action, makes training quality higher；2、
The vibration of the present invention directly stimulates throwing arm muscle group, improves explosive force；3rd, the present invention can raise more meat fibers to enter
Row exercise for power, makes more muscle contraction produce peak power；4th, on the track of training devicess apparatus sell at dispose eventually
Side pressure force transducer, trains rushing of hand-held heavy component 1 by training hand-held heavy component 1 and block dynamometry assembly 2-1 to measure
Hit power, carry out information Store；5th, the pressure transducer 33 on handle 22 measures force value curve, and body of wall display screen 32 Projection Display is believed
Breath and the information Store of videocorder 31；6th, measured by laser speed sensor 34 and train finally going out of hand-held heavy component 1
Release speed；7th, data processing is carried out by computer system 35 to data and data message carried out with high in the clouds storage reach information
The purpose of feedback；8th, according to the athlete's force value curve of exercise, speed of action firmly number such as time, impulsive force movement locus every time
According to the optimum matching relation finding out indices, and then realize effective exercise and the monitoring of quick strength Best Times.
Brief description
Fig. 1 is the main structure diagram of the present invention, and Fig. 2 is the A direction view of Fig. 1, and Fig. 3 is that vibration component 17 is arranged on instruction
Try one's hand and hold the front view of heavy component 1, the front view of Fig. 4 eccentric 19, Fig. 5 is the sectional view of B-B in Fig. 1.
Specific embodiment
Specific embodiment one：In conjunction with Fig. 1-Fig. 5, present embodiment, a kind of laser type hammer device of present embodiment are described
Tool vibration training and feedback of the information trainer, described trainer includes training hand-held heavy component 1, rocks support 2, main vibration group
Part 3, vibration component 17, fixed plate 15, feedback of the information mechanism 29 and laser speed sensor 34, feedback of the information mechanism 29 includes throwing
Shadow instrument 30, videocorder 31, body of wall display screen 32, computer system 35 and pressure transducer 33, rock support 2 and include block dynamometry
The different supporting leg 28 of assembly 2-1, annular slab 6, multiple baffle ring 8, multiple jack-up block 9, multiple length, multiple first spring 20, many
Individual supporting leg connecting seat 5 and multiple connecting cross beam 27, each supporting leg 28 also includes upper rack posts 16, rod set 7 and bearing pin 25, main vibration
Assembly 3 includes lifting frame 4, main vibration motor 10, main vibration motor cam 11 and two leads 12, trains hand-held weight group
Part 1 is arranged on the upper surface of annular slab 6, and the lower surface of annular slab 6 and horizontal plane angulation are R, and R is acute angle, overlooks
See that annular slab 6 has laser speed to sense by the two middle setting that least significant end to the most significant end counter clockwise direction of annular slab 6 is looked
Device 34, and the terminating end discharger 34-2 of laser speed sensor 34 is located at the vertical centre axis of annular slab 6 incline direction
On, the initiating terminal discharger 34-1 of laser speed sensor 34 is arranged on least significant end and this terminating end transmitting dress of annular slab 6
Put between 34-2, and the spacing between this initiating terminal discharger 34-1 and this terminating end discharger 34-2 is L, the numerical value of L
For 50cm, initiating terminal discharger 34-1 and initiating terminal reception device 34-4 of laser speed sensor 34 are correspondingly arranged, laser
Terminating end discharger 34-2 and terminating end reception device 34-3 of velocity sensor 34 are correspondingly arranged, initiating terminal discharger
34-1 and terminating end discharger 34-2 is arranged on outer edge, initiating terminal reception device 34-4 and the end of annular slab 6 upper surface
Knot termination receiving apparatus 34-3 is arranged on the inside edge of annular slab 6 upper surface, and it is hand-held heavy that vibration component 17 is fixedly mounted on training
On thing assembly 1, block dynamometry assembly 2-1 is fixedly mounted on annular slab 6, and block dynamometry assembly 2-1 is provided with block pressure
Sensor, pressure transducer 33 is fixedly mounted on the hand-held heavy component 1 of training, block pressure transducer and pressure transducer 33
Connect a signal input part of computer system 35, the signal of the signal output part of computer system 35 and projector 30 respectively
Input connects, and the signal output part of projector 30 is connected with the signal input part of videocorder 31, and projector 30 shows to body of wall
Screen 32 projection, multiple supporting leg connecting seats 5 are uniformly fixedly mounted on the lower surface of annular slab 6, the top of each upper rack posts 16 with
The bottom of one supporting leg connecting seat 5 is hinged, and two neighboring rod set 7 is fixedly connected by a connecting cross beam 27, a rod set 7
Lateral wall is vertically machined with multiple bearing pins vertically and passes through hole 26, and upper rack posts 16 bottom passes through bearing pin to pass through hole 26 by bearing pin 25
It is arranged in a rod set 7, the bottom of each rod set 7 is installed with baffle ring 8, the bottom of each rod set 7 is equipped with one
First spring 20, the top of the first spring 20 is fixedly connected with the bottom of a rod set 7, and the bottom of the first spring 20 is fixedly mounted on
In fixed plate 15, two leads 12 are all vertically inserted on lifting frame 4, and the bottom of each lead 12 and fixed plate 15
Upper surface be fixedly connected, be vertically arranged with a jack-up block 9, jack-up block between the lower surface of each baffle ring 8 and lifting frame 4
9 bottom is fixedly mounted on lifting frame 4, and main vibration motor 10 is fixedly mounted in fixed plate 15, main vibration motor 10
Main vibration motor cam 11 is provided with rotating shaft, main vibration motor cam 11 is arranged on the lower section of lifting frame 4, vibration component 17
Frequency of vibration be 26Hz-120Hz, the amplitude of vibration component 17 is 1mm-3mm, and videocorder 31 whole was trained to athletic
Journey and movement locus are recorded, and the change of pressure registration is passed through computer system by block pressure transducer and pressure transducer 33
35 are transferred on projector 30, and the pressure registration change of pressure transducer 33 and block pressure transducer is projected in by projector 30
On body of wall display screen 32, and projector 30 stores the pressure registration change of pressure transducer 33 and block pressure transducer to record
In camera 31 and computer system 35.
Projector 30, videocorder 31, body of wall display screen 32, computer system 35, block pressure sensing in present embodiment
Device and pressure transducer 33 are prior art.
Specific embodiment two：In conjunction with Fig. 1-Fig. 3, present embodiment, a kind of present embodiment laser type hammer apparatus are described
Vibration training and feedback of the information trainer, the hand-held heavy component 1 of described training includes connecting rod 24, handle 22, fixed block 14 and many
Individual weight 13, connecting rod 24 is ' L ' shape body of rod, and one end of connecting rod 24 is fixed with multiple weights 13 by fixed block 14, and handle 22 is solid
Dingan County is contained in the other end of connecting rod 24, and pressure transducer 33 is arranged on handle 22, other identical with embodiment one.
Specific embodiment three：In conjunction with Fig. 1-Fig. 3, present embodiment, a kind of present embodiment laser type hammer apparatus are described
Vibration training and feedback of the information trainer, described vibration component 17 includes vibration component motor 18, eccentric 19, slide rheostat
21 and portable power source 23, vibration component motor 18, eccentric 19, slide rheostat 21 and portable power source 23 are installed in connecting rod 24
On, and outside vibration component motor 18, slide rheostat 21 and portable power source 23, it is provided with shell, eccentric 19 is fixedly mounted on and shakes
In the rotating shaft of dynamic assembly motor 18, portable power source 23 is connected with vibration component motor 18 by slide rheostat 21, by adjusting
Slide rheostat changes the speed that eccentric 19 rotates on vibration component motor 18, adjusts the training difficulty of trainer, other
Identical with embodiment one.
Specific embodiment four：In conjunction with Fig. 4, present embodiment is described, a kind of present embodiment laser type hammer apparatus vibrates
Training and feedback of the information trainer, described eccentric 19 also include eccentric spring 19-3, groove lid 19-5 and multiple partially
Heart wheel weight 19-4, one end of eccentric 19 is machined with groove 19-1, and the other end of eccentric 19 is machined with motor axis hole 19-
2, eccentric spring 19-3 are arranged on the bottom land of groove 19-1, and multiple eccentric weight 19-4 are arranged in groove 19-1,
Groove lid 19-5 is fixedly mounted on groove 19-1, by how many regulation handss of eccentric weight 19-4 in eccentric 19
Handle 22 rock size, other identical with embodiment three.
Specific embodiment five：In conjunction with Fig. 1 and Fig. 5, present embodiment, a kind of present embodiment laser type hammer device are described
Tool vibration training and feedback of the information trainer, described lifting frame 4 are machined with two connecting plate 4-1, on each connecting plate 4-1
It is fitted with a lead 12, other identical with embodiment one.
Operation principle
When carrying out hammer exercise, trainer stands in above fixed plate 15, grasps the handle 22 of hammer training devicess, enters
The exercise of row final force, by the axis of rotation of main vibration motor 10 on main vibration assembly 3, the rotating shaft band of main vibration motor 10
Dynamic main vibration motor cam 11 rotates, and is risen lifting frame 4 by main vibration motor cam 11, makes to rock support 2 first
Carry out elevating movement, the vibration component motor 18 simultaneously opening vibration component 17 switchs, vibration component electricity in the presence of spring 20
The rotational band movable eccentric wheel 19 of machine 18 is rotated in handle 22, and band fixed handle 22 rocks, to increase exercise difficulty, by swashing
Ray velocity sensor 34 measure train hand-held heavy component 1 finally go out release speed, trainer is held by pressure transducer 33
It is transferred on projector 30 in the change of handle 22 upward pressure registration and the pressure value of block pressure transducer, projector 30 is by pressure
The pressure value of the pressure registration change of sensor 33 and block pressure transducer is projected on body of wall display screen 32, and projector 30
The pressure registration change of pressure transducer 33 is stored to videocorder 31, by computer system 35, data is carried out at data
Reason simultaneously carries out the purpose that high in the clouds storage reaches feedback of the information to data message.
Claims (5)
1. a kind of laser type hammer apparatus vibration training and feedback of the information trainer it is characterised in that：Described trainer includes instructing
Try one's hand and hold heavy component (1), rock support (2), main vibration assembly (3), vibration component (17), fixed plate (15), feedback of the information
Mechanism (29) and laser speed sensor (34), feedback of the information mechanism (29) inclusion projector (30), videocorder (31), body of wall show
Display screen (32), computer system (35) and pressure transducer (33), rock support (2) and include block dynamometry assembly (2-1), annular
The different supporting leg (28) of plate (6), multiple baffle ring (8), multiple jack-up block (9), multiple length, multiple first spring (20), multiple
Supporting leg connecting seat (5) and multiple connecting cross beam (27), each supporting leg (28) also includes upper rack posts (16), rod set (7) and bearing pin
(25), main vibration assembly (3) includes lifting frame (4), main vibration motor (10), main vibration motor cam (11) and two guiding
Post (12), trains hand-held heavy component (1) to be arranged on the upper surface of annular slab (6), the lower surface of annular slab (6) and horizontal plane
Angulation is R, and R is acute angle, views from above annular slab (6) and is seen to most significant end counter clockwise direction by the least significant end of annular slab (6)
The two middle setting gone has laser speed sensor (34), and the terminating end discharger (34- of laser speed sensor (34)
2) it is located on the vertical centre axis of annular slab (6) incline direction, the initiating terminal discharger of laser speed sensor (34)
(34-1) it is arranged between the least significant end of annular slab (6) and this terminating end discharger (34-2), and this initiating terminal discharger
(34-1) spacing and this terminating end discharger (34-2) between is L, and the numerical value of L is 50cm, laser speed sensor (34)
Initiating terminal discharger (34-1) be correspondingly arranged with initiating terminal reception device (34-4), the termination of laser speed sensor (34)
End discharger (34-2) is correspondingly arranged with terminating end reception device (34-3), and initiating terminal discharger (34-1) and terminating end are sent out
Injection device (34-2) is arranged on the outer edge of annular slab (6) upper surface, and initiating terminal reception device (34-4) and terminating end receive
Device (34-3) is arranged on the inside edge of annular slab (6) upper surface, and vibration component (17) is fixedly mounted on the hand-held weight of training
On assembly (1), block dynamometry assembly (2-1) is fixedly mounted on annular slab (6), and block dynamometry assembly (2-1) is provided with gear
Block pressure transducer, pressure transducer (33) is fixedly mounted in training hand-held heavy component (1), block pressure transducer and pressure
Force transducer (33) connects a signal input part of computer system (35), the signal output part of computer system (35) respectively
It is connected with the signal input part of projector (30), the signal output part of projector (30) is connected with the signal input part of videocorder (31)
Connect, projector (30) projects to body of wall display screen (32), multiple supporting leg connecting seats (5) are uniformly fixedly mounted on annular slab (6)
On lower surface, the top of each upper rack posts (16) is hinged with the bottom of a supporting leg connecting seat (5), two neighboring rod set (7)
It is fixedly connected by a connecting cross beam (27), the lateral wall of a rod set (7) is vertically machined with multiple bearing pins vertically and passes through hole
(26), upper rack posts (16) bottom passes through bearing pin to be arranged in a rod set (7) through hole (26) by bearing pin (25), each rod set
(7) bottom is installed with baffle ring (8), and the bottom of each rod set (7) is equipped with first spring (20), the first spring
(20) top is fixedly connected with the bottom of a rod set (7), and the bottom of the first spring (20) is fixedly mounted in fixed plate (15),
Two leads (12) are all vertically inserted on lifting frame (4), and the bottom of each lead (12) and fixed plate (15)
Upper surface is fixedly connected, and is vertically arranged with a jack-up block (9) between the lower surface of each baffle ring (8) and lifting frame (4), top
The bottom of bittiness (9) is fixedly mounted on lifting frame (4), and main vibration motor (10) is fixedly mounted in fixed plate (15), main
Main vibration motor cam (11) is provided with the rotating shaft of vibration motor (10), main vibration motor cam (11) is arranged on lifting frame
(4) lower section.
2. according to claim 1 a kind of laser type hammer apparatus vibration training and feedback of the information trainer it is characterised in that：
The hand-held heavy component of described training (1) includes connecting rod (24), handle (22), fixed block (14) and multiple weight (13), connecting rod
(24) it is ' L ' shape body of rod, one end of connecting rod (24) is fixed with multiple weights (13) by fixed block (14), the fixing peace of handle (22)
It is contained in the other end of connecting rod (24), pressure transducer (33) is arranged on handle (22).
3. according to claim 1 a kind of laser type hammer apparatus vibration training and feedback of the information trainer it is characterised in that：
Described vibration component (17) includes vibration component motor (18), eccentric (19), slide rheostat (21) and portable power source (23),
Vibration component motor (18), eccentric (19), slide rheostat (21) and portable power source (23) are installed on connecting rod (24), and
It is provided with shell, eccentric (19) fixedly mounts outside vibration component motor (18), slide rheostat (21) and portable power source (23)
In the rotating shaft of vibration component motor (18), portable power source (23) passes through slide rheostat (21) with vibration component motor (18) even
Connect.
4. according to claim 3 a kind of laser type hammer apparatus vibration training and feedback of the information trainer it is characterised in that：
Described eccentric (19) also includes eccentric spring (19-3), groove lid (19-5) and multiple eccentric weight (19-4),
One end of eccentric (19) is machined with groove (19-1), and the other end of eccentric (19) is machined with motor axis hole (19-2), partially
Heart wheel spring (19-3) is arranged on the bottom land of groove (19-1), and multiple eccentric weights (19-4) are arranged on groove (19-1)
Interior, groove lid (19-5) is fixedly mounted on groove (19-1).
5. according to claim 1 a kind of laser type hammer apparatus vibration training and feedback of the information trainer it is characterised in that：
Two connecting plates (4-1) are machined with described lifting frame (4), each connecting plate (4-1) is fitted with a lead (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410841582.6A CN104474678B (en) | 2014-12-30 | 2014-12-30 | Laser type hammer throw equipment vibration exercise and information feedback exerciser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410841582.6A CN104474678B (en) | 2014-12-30 | 2014-12-30 | Laser type hammer throw equipment vibration exercise and information feedback exerciser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104474678A CN104474678A (en) | 2015-04-01 |
| CN104474678B true CN104474678B (en) | 2017-02-22 |
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ID=52749364
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410841582.6A Expired - Fee Related CN104474678B (en) | 2014-12-30 | 2014-12-30 | Laser type hammer throw equipment vibration exercise and information feedback exerciser |
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| Country | Link |
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| CN (1) | CN104474678B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106314905A (en) * | 2016-11-22 | 2017-01-11 | 无锡市麦杰自动化包装科技有限公司 | Bag vibration conveying mechanism |
| CN106379568A (en) * | 2016-11-22 | 2017-02-08 | 无锡市麦杰自动化包装科技有限公司 | Bag vibration assembly of bag vibration conveying mechanism |
| CN112957705B (en) * | 2021-02-20 | 2022-05-06 | 平顶山学院 | Strength training device for track and field athletes |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8684868B2 (en) * | 2010-12-13 | 2014-04-01 | Velocity Gravity Spin Innovations Llc | Ball for use in teaching pitching skills |
| CN202376708U (en) * | 2011-12-29 | 2012-08-15 | 牡丹江师范学院 | Photoelectric hammer throw special strength training device |
| CN203736814U (en) * | 2013-12-30 | 2014-07-30 | 哈尔滨师范大学 | Laser plyometric hammer core stabilizing strength training and quantization monitoring device |
| CN103638657B (en) * | 2013-12-30 | 2016-01-20 | 河南科技学院 | Laser-type super-equal-length weight throw core stable force training and information feedback device |
| CN103721390B (en) * | 2013-12-30 | 2015-12-30 | 绥化学院 | A kind of hammer core stable strength building and information feedback device |
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2014
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| CN104474678A (en) | 2015-04-01 |
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Granted publication date: 20170222 Termination date: 20171230 |