阅读说明：本技术 一种撑杆跳训练防受伤装置 (Injury prevention device for strut jump training ) 是由 姜俊 罗旺 陈阳 于 2021-07-02 设计创作，主要内容包括：本发明属于田径运动领域,具体是涉及到一种撑杆跳训练防受伤装置,包括直线驱动组件和撑杆抓取组件,撑杆抓取组件包括撑杆定位板、两块活动夹块以及驱动绳组件一和驱动绳组件二,两块活动夹块相对一侧设置有卡合固定件,还包括用于感应撑杆插入插斗的感应装置一和训练者脱离撑杆的感应装置二,本发明两块活动夹块通过驱动绳组件进行驱动,在抓取完毕和训练者脱离撑杆之前,可以通过解除两个驱动绳组件的自锁,使活动夹块不限制或影响撑杆的移动和转动,即不会影响到训练者的训练效果,直至感应装置二感应到训练者脱离撑杆后,两个驱动绳组件或直线驱动组件工作快速的推动撑杆朝向背离训练者下降的一侧倾倒,以此避免撑杆戳伤训练者。(The invention belongs to the field of track and field sports, and particularly relates to a stay bar jumping training anti-injury device which comprises a linear driving assembly and a stay bar grabbing assembly, wherein the stay bar grabbing assembly comprises a stay bar positioning plate, two movable clamping blocks, a first driving rope assembly and a second driving rope assembly, clamping and fixing parts are arranged on opposite sides of the two movable clamping blocks, and the device also comprises a first sensing device for sensing that a stay bar is inserted into an inserting hopper and a second sensing device for sensing that a trainer breaks away from the stay bar, the two movable clamping blocks are driven by the driving rope assemblies, the self-locking of the two driving rope assemblies can be released before the trainer breaks away from the stay bar after grabbing, so that the movable clamping blocks do not limit or influence the movement and rotation of the stay bar, namely the training effect of the trainer cannot be influenced, and the two driving rope assemblies or the linear driving assembly work to push the stay bar to incline towards the side which deviates from the descending of the trainer quickly after the induction device senses that the trainer breaks away from the stay bar, thereby avoiding the training person from being stabbed by the stay bar.)

1. A stay bar jumping training anti-injury device is characterized by comprising a linear driving assembly (1) arranged on a cushion pad (4), a stay bar grabbing assembly (2) arranged on the output end of the linear driving assembly (1), wherein the stay bar grabbing assembly (2) comprises a stay bar positioning plate (21), two movable clamping blocks (23), a first driving rope assembly (24) and a second driving rope assembly (25) which drive the two movable clamping blocks (23) to be relatively closed and separated, a first through hole (211) is formed in the stay bar positioning plate (21), the first driving rope assembly (24) comprises a first winder (241) and two first driving ropes (242) connected with the first winder (241) which are arranged on one side, away from the movable clamping blocks (23), of the stay bar positioning plate (21), the other ends of the two first driving ropes (242) penetrate through the first through hole (211) to be respectively connected with the two movable clamping blocks (23), the utility model discloses a lock device, including vaulting pole locating plate (21), vaulting pole locating plate (21) both sides are provided with limiting plate (22), driving rope subassembly two (25) are including two sets of two coilers (251) that set up respectively on two limiting plates (22) and the driving rope two (252) of connecting two coilers (251), the driving rope two (252) other end is connected with one side that limiting plate (22) are close to in activity clamp splice (23), two relative one sides in activity clamp splice (23) are provided with and are used for with vaulting pole (5) complex semicircle groove (231) and be used for block and block mounting (232) of two activity clamp splices (23), still including being used for response vaulting pole (5) to insert the induction system one of fighting (6) and the induction system two that the training person breaks away from vaulting pole (5).

2. The brace rod jumping training injury prevention device as claimed in claim 1, wherein a fixed rack (26) is arranged on a side of the brace rod positioning plate (21) away from the movable clamping block (23), the first winder (241) is arranged between the brace rod positioning plate (21) and the fixed rack (26), the brace rod positioning plate (21) is connected with the output end of the linear driving assembly (1) through the fixed rack (26), and the fixed rack (26) is connected with the output end of the linear driving assembly (1) through a spherical hinge (27).

3. The brace rod jumping training anti-injury device as claimed in claim 2, wherein the other two sides of the brace rod positioning plate (21) are provided with sensing plates (212), and the first retractor (241) works after the two sensing plates (212) contact the brace rod (5).

4. The brace rod jumping training injury prevention device as claimed in claim 1, wherein the engaging fixing member (232) comprises an engaging groove (2321) disposed on one of the movable clamping blocks (23) and an engaging block (2322) disposed on the other movable clamping block (23), an opening of the engaging groove (2321) is provided with a chamfer, after the two movable clamping blocks (23) are matched, the engaging block (2322) is inserted into the engaging groove (2321), the engaging groove (2321) is provided with a locking pin (2323), the engaging block (2322) is correspondingly provided with a matching hole, and the device further comprises a driving member for driving the locking pin (2323) to work.

5. The brace rod jump training anti-injury device of claim 4, wherein the opposite sides of the movable clamping blocks (23) are magnetically attracted to each other.

6. The brace rod jumping training anti-injury device as claimed in claim 1, wherein a positioning groove (221) is arranged on the limiting plate (22), a positioning convex block (233) is arranged at a position corresponding to the movable clamping block (23), and a chamfer is arranged at an opening of the positioning groove (221).

7. The brace rod jumping training injury prevention device of any one of claims 1-6, wherein the first sensing device and the second sensing device are pressure sensors disposed below the insertion bucket (6), when the pressure sensors sense that the pressure is from zero to a certain value, it is determined that the brace rod (5) is inserted into the insertion bucket (6), and when the pressure sensors sense that the pressure is rapidly reduced to a certain value, it is determined that the trainer is separated from the brace rod (5).

8. The brace rod jumping training injury prevention device as claimed in any one of claims 1-6, wherein the two sides of the lowest position of the insertion bucket (6) are hinged with side plates (61), the side plates (61) can only open towards the inside of the insertion bucket (6), the device further comprises two groups of linear driving parts (3) arranged towards the side plates (61), and the output ends of the two groups of linear driving parts (3) are provided with arc-shaped clamping blocks (31).

9. A training device as claimed in any one of claims 1 to 6 wherein the part of the cushion (4) where the linear drive assembly (1) is located is made of hard material and the cushion (4) is provided with a receiving slot (41) for receiving the strut capture assembly (2).

10. A method for using a brace jump training anti-injury device, comprising the brace jump training anti-injury device of any one of claims 1-9, further comprising the steps of:

s1, when the sensing assembly senses that the support rod (5) is inserted into the inserting hopper (6), the linear driving assembly (1) drives the support rod grabbing assembly (2) to move towards the support rod (5) until the support rod positioning plate (21) is contacted with the support rod (5);

s2, the first winder (241) works to drive the first driving ropes (242) to retract synchronously to drive the two movable clamping blocks (23) to approach relatively and to be matched with the support rod (5), and after the two movable clamping blocks (23) are matched, the two movable clamping blocks (23) are clamped and fixed by the fixing piece (232) to be matched to lock the two movable clamping blocks (23);

s3, the first winder (241) and the second winder (251) are in a contact locking state, and the linear driving assembly (1) drives the stay bar positioning plate (21) to be far away from the stay bar (5);

s4, when the sensing assembly II senses that the trainer is separated from the support rod (5), at least one of the first winder (241), the second winder (251) and the linear driving assembly (1) works rapidly, and the support rod (5) is driven to incline in a direction deviating from the descending direction of the trainer;

s5, the clamping fixing piece (232) is loosened and unlocked, the second winder (251) works to drive the two movable clamping blocks (23) to be matched with the limiting plate (22), and the linear driving assembly (1) drives the support rod grabbing assembly (2) to reset.

Technical Field

The invention belongs to the field of track and field sports, and particularly relates to an anti-injury device for strut jump training.

Background

The pole jump is one of the most complicated technical items in the track and field projects, and is a sport with a high risk coefficient, wherein the situation that the athlete is contacted with a pole and stabbed by the pole in the descending process is included, even the lower body of the athlete is bruised by the pole, so that the athlete can not grow, and similar injury cases can also occur to professional athletes in a large-scale sport meeting due to errors or other reasons.

Disclosure of Invention

The invention aims to provide a strut jumping training anti-injury device which does not affect the training effect and avoids a strut contusion trainer.

The invention comprises a linear driving component arranged on a buffer cushion, a stay bar grabbing component arranged on the output end of the linear driving component, wherein the stay bar grabbing component comprises a stay bar positioning plate, two movable clamping blocks, a first driving rope component and a second driving rope component which drive the two movable clamping blocks to be relatively closed and separated, a first through hole is formed in the stay bar positioning plate, the first driving rope component comprises a first winder and two first driving ropes, the first winder is arranged on one side, away from the movable clamping blocks, of the stay bar positioning plate, the first driving rope component is connected with the first driving rope component, the other ends of the two driving ropes penetrate through the first through hole and are respectively connected with the two movable clamping blocks, limiting plates are arranged on two sides of the stay bar positioning plate, the second driving rope component comprises two groups of second winders respectively arranged on the two limiting plates and a second driving rope connected with the second winder, and the other ends of the two driving ropes are connected with one side, close to the limiting plates, of the movable clamping blocks, the opposite sides of the two movable clamping blocks are provided with a semicircular groove used for being matched with the support rod and a clamping fixing piece used for locking and unlocking the two movable clamping blocks, and the device also comprises a first sensing device used for sensing that the support rod is inserted into the inserting hopper and a second sensing device used for sensing that a trainer breaks away from the support rod.

Furthermore, a fixing rack is arranged on one side, away from the movable clamping block, of the stay bar positioning plate, the first winder is arranged between the stay bar positioning plate and the fixing rack, the stay bar positioning plate is connected with the output end of the linear driving assembly through the fixing rack, and the fixing rack is connected with the output end of the linear driving assembly through a spherical hinge.

Furthermore, the other two sides of the strut positioning plate are provided with induction plates, and the two induction plates are in contact with the strut and then work in the first winder.

Furthermore, the clamping fixing piece comprises a clamping groove arranged on one movable clamping block and a clamping block arranged on the other movable clamping block, wherein a chamfer is arranged at the opening of the clamping groove, the clamping block is inserted into the clamping groove after the two movable clamping blocks are matched, a locking pin is arranged on the clamping groove, a matching hole is correspondingly arranged on the clamping block, and the clamping fixing piece further comprises a driving piece for driving the locking pin to work.

Furthermore, the opposite sides of the movable clamping blocks are magnetically attracted with each other.

Furthermore, the limiting plate is provided with a positioning groove, a positioning bump is arranged at a position corresponding to the movable clamping block, and a chamfer is arranged at an opening of the positioning groove.

Furthermore, the first sensing device and the second sensing device are pressure sensors arranged below the inserting buckets, when the pressure sensors sense that the pressure is from zero to a certain value, the fact that the support rods are inserted into the inserting buckets is judged, and when the pressure sensors sense that the pressure is rapidly reduced by a certain value, the fact that the trainees are separated from the support rods is judged.

Furthermore, insert and fight extreme low position both sides and articulate and be provided with the curb plate, the curb plate can only be towards inserting the inside opening of fighting, still includes two sets of linear driving pieces that set up towards the curb plate, and two sets of linear driving piece output is provided with the arc fixture block.

Furthermore, the part of the cushion pad where the linear driving assembly is arranged is made of hard materials, and an accommodating groove for accommodating the strut grabbing assembly is formed in the cushion pad.

The invention also provides a use method of the stay bar jump training anti-injury device, which comprises the stay bar jump training anti-injury device and further comprises the following steps:

s1, when the sensing assembly senses that the stay bar is inserted into the inserting hopper, the linear driving assembly drives the stay bar grabbing assembly to move towards the stay bar until the stay bar positioning plate is contacted with the stay bar;

s2, the first winder works to drive the two driving ropes to retract synchronously to drive the two movable clamping blocks to relatively draw close and to be matched with the supporting rod, and the two movable clamping blocks are clamped and matched with the fixing piece after being matched to lock the two movable clamping blocks;

s3, the first winder and the second winder are in a contact locking state, and the linear driving assembly drives the stay bar positioning plate to be far away from the stay bar;

s4, when the sensing assembly II senses that the trainer is separated from the support rod, at least one of the first winder, the second winder or the linear driving assembly works rapidly, and the support rod is driven to incline in a direction deviating from the descending direction of the trainer;

s5, the clamping fixing piece is loosened and unlocked, the second winder works to drive the two movable clamping blocks to be matched with the limiting plate, and the linear driving assembly drives the support rod grabbing assembly to reset.

The invention has the advantages that the invention can realize rapid grabbing by only needing to be arranged between two movable clamping blocks in a default state, namely the stay bar can be effectively grabbed within a certain position and a certain angle range in the insertion hopper, wherein the two movable clamping blocks are driven by the driving rope component, the self-locking of the two driving rope components can be released before the grabbing is finished and a trainer is separated from the stay bar, so that the movable clamping blocks can not limit or influence the movement and the rotation of the stay bar, namely the training effect of the trainer can not be influenced, until the induction device senses that the trainer is separated from the stay bar, the two driving rope assemblies or the linear driving assembly can quickly work to push the stay bar to incline towards the side away from the descending side of the trainer, so that the stay bar is prevented from stabbing the trainer, the safety of the training of the trainer is improved, the training effect is further improved, and the training safety is greatly improved while the influence on the training is reduced as much as possible.

Drawings

FIG. 1 is a first angle diagram illustrating the usage of the present invention;

FIG. 2 is a second perspective view of the present invention in use;

FIG. 3 is a schematic view of a first angular configuration of the present invention;

fig. 4 is a second angle structure diagram of the present invention.

In the figures, 1-linear drive assembly; 2-a strut grabbing component; 21-a stay bar positioning plate; 211-through hole one; 212-a sensing plate; 22-a limiting plate; 221-positioning grooves; 23-a movable clamp splice; 231-a semi-circular slot; 232-clamping the fixing piece; 2321-a clamping groove; 2322-a block; 2323-locking pin; 233-positioning the bump; 24-a drive rope assembly one; 241-a first winder; 242-driving rope one; 25-a second drive rope assembly; 251-a second winder; 252-drive line two; 26-a stationary gantry; 27-a spherical hinge; 3-a linear drive; 31-arc fixture block; 4-a buffer pad; 41-an accommodating groove; 5-a stay bar; 6-inserting a bucket; 61-side plate.

Detailed Description

As shown in fig. 1-4, the present invention includes a linear driving assembly 1 disposed on a cushion pad 4, and a strut grabbing assembly 2 disposed on an output end of the linear driving assembly 1, the strut grabbing assembly 2 includes a strut positioning plate 21, two movable clamping blocks 23, a first driving rope assembly 24 and a second driving rope assembly 25 for driving the two movable clamping blocks 23 to close and separate relatively, the strut positioning plate 21 is provided with a first through hole 211, the first driving rope assembly 24 includes a first winder 241 disposed on a side of the strut positioning plate 21 away from the movable clamping blocks 23 and two first driving ropes 242 connected to the first winder 241, the other ends of the two first driving ropes 242 penetrate through the first through hole 211 to be connected to the two movable clamping blocks 23, two sides of the strut positioning plate 21 are provided with limiting plates 22, the second driving rope assembly 25 includes two sets of second winders 251 disposed on the two limiting plates 22 and a second driving rope 252 connected to the second winder, the other end of the second driving rope 252 is connected with one side of the movable clamping block 23 close to the limiting plate 22, one side of the two movable clamping blocks 23 opposite to each other is provided with a semicircular groove 231 used for being matched with the support rod 5 and a clamping fixing piece 232 used for locking and unlocking the two movable clamping blocks 23, and the second driving rope further comprises a first sensing device used for sensing that the support rod 5 is inserted into the inserting hopper 6 and a second sensing device used for sensing that a trainer breaks away from the support rod 5.

According to the invention, the stay bar grabbing component 2 is arranged, and after the sensing device senses that the stay bar 5 is inserted into the insertion bucket 6, the stay bar grabbing component 2 is driven to a corresponding position to grab the stay bar 5 through the linear driving component 1, wherein the stay bar grabbing component 2 grabs the stay bar 5 through the stay bar positioning plate 21 and the two movable clamping blocks 23 arranged between the stay bar positioning plates 21, the stay bar 5 can be quickly grabbed only between the two movable clamping blocks 23 in a default state, and the stay bar 5 can be effectively grabbed at a certain position and within a certain angle interval in the insertion bucket 6, wherein the two movable clamping blocks 23 are driven through the driving rope component, and before grabbing is finished and a trainer is separated from the stay bar 5, self-locking of the two driving rope components can be released, so that the movable clamping blocks 23 do not limit or influence movement and rotation of the stay bar 5, namely, the training effect of the trainer is not influenced, until the second sensing device senses that the trainer is separated from the support rod 5, the two driving rope assemblies or the linear driving assembly 1 rapidly work to push the support rod 5 to incline towards the side away from the descending side of the trainer, so that the support rod 5 is prevented from stabbing the trainer, the training safety of the trainer is improved, and the training effect is further improved.

The side, away from the movable clamping block 23, of the stay rod positioning plate 21 is provided with a fixed rack 26, the first winder 241 is arranged between the stay rod positioning plate 21 and the fixed rack 26, the stay rod positioning plate 21 is connected with the output end of the linear driving assembly 1 through the fixed rack 26, and the fixed rack 26 is connected with the output end of the linear driving assembly 1 through a spherical hinge 27. in the invention, the stay rod positioning plate 21 is connected with the output end of the linear driving assembly 1 through the spherical hinge 27, when the stay rod positioning plate 21 contacts with the stay rod 5, the plate surface of the stay rod positioning plate can be attached to the stay rod 5, so that the two subsequent movable clamping blocks 23 can be directly and stably matched with each other when being relatively closed, and are just matched with the stay rod 5, the success rate and the reliability of the movable clamping block 23 for connecting the stay rod 5 are greatly improved, and therefore, when the stay rod 5 and the symmetrical surface of the inserting bucket 6 have a certain angle, the stay, the rotation is performed by the ball hinge 27 so that the axis of the stay 5 is parallel to the plane of the stay positioning plate 21, wherein the ball hinge 27 has a certain damping and the ball hinge 27 does not rotate until the stay positioning plate 21 contacts the stay 5.

The other both sides of vaulting pole locating plate 21 are provided with tablet 212, first 241 work of rolling ware behind the equal contact vaulting pole 5 of two tablet 212, through setting up tablet 212, whether can effectual judgement vaulting pole locating plate 21 contacts with vaulting pole 5 fast, and its face and the laminating of vaulting pole 5, and make a response fast, control driving rope subassembly 24 work, two movable clamp splice 23 of drive are mutually supported centre gripping vaulting pole 5, specifically, two tablet 212 slidable settings are on vaulting pole locating plate 21, and set up pressure sensor between tablet 212 and the vaulting pole locating plate 21, after two pressure sensor all sensed pressure, judge vaulting pole 5 and the laminating of vaulting pole locating plate 21 promptly.

The clamping fixing member 232 includes a clamping groove 2321 disposed on one of the movable clamping blocks 23 and a clamping block 2322 disposed on the other movable clamping block 23, an opening of the clamping groove 2321 is provided with a chamfer, after the two movable clamping blocks 23 are matched, the clamping block 2322 is inserted into the clamping groove 2321, the clamping groove 2321 is provided with a locking pin 2323, the clamping block 2322 is correspondingly provided with a matching hole, and the clamping fixing member further includes a driving member for driving the locking pin 2323 to operate, after the clamping block 2322 is inserted into the clamping groove 2321, whether the insertion is completed or not can be determined by means of a switching device such as a photoelectric switch or a contact, after the determination is completed, a signal can be sent to the controller, and the controller controls the driving member to drive the locking pin 2323 to operate to lock the clamping block 2322 and the clamping groove 2321, so as to complete the locking matching of the two movable clamping blocks 23.

The relative one side of activity clamp splice 23 is inhaled each other magnetically, specifically, can set up the electro-magnet on an activity clamp splice 23, cooperates the messenger to open the electro-magnet and produces the magnetism effect of inhaling in needs each other, through the magnetism effect of inhaling, the quick accurate connection of two movable clamp splices 23 of being convenient for improves connection speed.

Be provided with constant head tank 221 on the limiting plate 22, activity clamp splice 23 corresponds the position and is provided with location lug 233, constant head tank 221 opening part is provided with the chamfer, through setting up constant head tank 221 and location lug 233 to set up the chamfer at constant head tank 221 opening part, provide the guide effect that resets, the quick accurate of the movable clamp splice 23 of being convenient for resets, prepares for next work.

The first sensing device and the second sensing device are pressure sensors arranged below the insertion hopper 6, when the pressure sensors sense that the pressure is from zero to a certain value, the fact that the supporting rod 5 is inserted into the insertion hopper 6 is judged, namely, the process that the pressure applied to the insertion hopper 6 suddenly falls from zero to some is the fact that the trainer holds the supporting rod 5 to be inserted into the insertion hopper 6, the trainer is supported by taking the lowest end of the insertion hopper 6 as a fulcrum, when the pressure sensors sense that the pressure quickly falls by a certain value, the trainer is judged to be separated from the supporting rod 5, namely, when the trainer releases the supporting rod 5, the pressure applied to the supporting rod 5 is instantaneously reduced by a certain value, at the moment, the pressure change is detected by the pressure sensors, the pressure change is sent to the controller to judge that the trainer is separated from the supporting rod 5, meanwhile, a signal is sent to the supporting rod grabbing component 2, and the supporting rod grabbing component 2 drives the supporting rod 5 to quickly incline towards other directions of the descending direction of the trainer, of course, the first sensing device and the second sensing device can also use a camera or other modes to judge that the stay bar 5 is inserted into the inserting hopper 6 and the trainer is separated from the stay bar 5, only one of the preferred modes is adopted by the pressure sensor, and the mode has the advantages of simple structure, low cost and accurate and timely monitoring.

In order to break away from vaulting pole 5 in judging the training person, quick effectual vaulting pole 5 of pushing away, insert and fight 6 lowest position both sides and articulate and be provided with curb plate 61, curb plate 61 only can insert the inside opening of fighting 6 towards inserting, can not influence the normal use who inserts fighting 6, still include two sets of sharp driving piece 3 that set up towards curb plate 61, the 3 output of two sets of sharp driving piece is provided with arc fixture block 31, when the vaulting pole snatchs subassembly 2 drive vaulting pole 5 and emptys, one of them sharp driving piece 3 can drive arc fixture block 31 and pass curb plate 61 and promote the lowest part orientation that vaulting pole 5 was toppled the opposite direction of direction and remove, very big improvement the speed and the effect that vaulting pole 5 toppled, avoid the automatic sliding influence of vaulting pole.

The blotter 4 sets up 1 position of sharp drive assembly and is hard material, the setting of the sharp drive assembly 1 of being convenient for, guarantee that sharp drive assembly 1 and vaulting pole snatch the motion stability of subassembly 2, and be provided with on the blotter 4 and be used for holding the vaulting pole and snatch the holding tank 41 of subassembly 2, through setting up holding tank 41, when this application does not use perhaps, sharp drive assembly 1 and vaulting pole snatch subassembly 2 and do not carry out effectual protection when not working, avoid influencing 5 insertions of vaulting pole and insert 6 or influence the training person and exert.

The invention also provides a use method of the stay bar jump training anti-injury device, which comprises the stay bar jump training anti-injury device and further comprises the following steps:

s1, when the first sensing component senses that the supporting rod 5 is inserted into the insertion bucket 6, that is, the pressure sensor monitors that the insertion bucket 6 is under pressure from zero to some time, it is determined that the supporting rod 5 is inserted into the insertion bucket 6, the pressure sensor sends a signal to the controller, the controller further controls the output end of the linear driving component 1 to extend, and drives the supporting rod grabbing component 2 to move towards the supporting rod 5 until the supporting rod positioning plate 21 contacts with the supporting rod 5, wherein the plate surface of the supporting rod positioning plate 21 of the supporting rod grabbing component 2 first contacts with the supporting rod 5, and since the supporting rod positioning plate 21 and the linear driving component 1 are connected with each other through the spherical hinge 27, under the condition that the supporting rod 5 has a certain inclination angle, the supporting rod positioning plate 21 will rotate around the spherical hinge 27, so that the plate surface thereof is attached to the supporting rod 5, and when the pressure sensors on the two sensing plates 212 both sense pressure, the pressure sensors of the sensing plates 212 send signals to the controller, the controller controls the linear driving assembly 1 to stop advancing, and the controller controls to start S2;

s2, the first winder 241 works to drive the first two driving ropes 242 to retract synchronously to drive the two movable clamping blocks 23 to approach relatively and to be matched with the support rod 5, before matching, one electromagnet on the two movable clamping blocks 23 is electrified to generate magnetic attraction to absorb metal on the other movable clamping block 23, so that the speed effect and accuracy of matching are improved, after matching, when the fact that the clamping block 2322 is matched with the clamping groove 2321 is sensed, the driving piece drives the locking pin 2323 to be inserted into the matching hole to lock the two movable clamping blocks 23, matching of the two movable clamping blocks 23 and the support rod 5 is completed, and meanwhile the controller controls to start S3;

s3, the first winder 241 and the second winder 251 are in a contact locking state, and the linear driving assembly 1 drives the stay bar positioning plate 21 to be far away from the stay bar 5, so that after the movable clamping block 23 is matched with the stay bar 5, the whole injury prevention device can not influence the normal use of a trainer in the time when the trainer is separated from the stay bar 5, and the influence of the device on the training of the trainer is greatly reduced;

s4, when the sensing assembly II senses that the trainer is separated from the support rod 5, namely when the pressure sensor monitors that the pressure suddenly changes from large to small for a certain value, the fact that the trainer breaks away from the support rod 5 is judged, meanwhile, at least one of the first winder 241, the second winder 251 or the linear driving assembly 1 works rapidly, the support rod 5 is driven to incline away from the descending direction of the trainer, as shown in the figure 3, when the trainer crosses the cross rod and descends forwards, the second winder 251 on the right side (far away from the cross rod) works, the two movable clamping blocks 23 are pulled to drive the support rod 5 to incline towards the runway direction around the bottom of the insertion bucket 6, and therefore the support rod 5 is prevented from stabbing the trainer in the descending process of the trainer; when a trainer does not go across the cross bar to directly descend, the two second windups 251 do not work, the first windups 241 work to pull the support rods 5 to incline towards the right side around the bottoms of the inserting hoppers 6 or the linear driving assembly 1 extends to push the support rods 5 to incline towards the left side around the bottoms of the inserting hoppers 6, so that the situation that the trainer is hurt by the support rods 5 in the descending process of the trainer is avoided, when the support rods 5 need to incline towards the right side, the linear driving piece 3 on the right side drives the arc-shaped clamping block 31 to penetrate through the side plate 61 to push the bottoms of the support rods 5 to move leftwards, the inclining speed is accelerated, the inclining direction is ensured, when the support rods 5 need to incline towards the left side, the left linear driving piece 3 works, the descending direction of the trainer and the inclining direction of the support rods 5 can be monitored in real time through a camera, a computer and the like, and the inclining direction of the support rods 5 can also be controlled manually in time;

s5, after the trainer safely descends, the electromagnet on one movable clamping block 23 is powered off, meanwhile, the clamping fixing piece 232 is clamped and unlocked, the second winder 251 works to drive the two movable clamping blocks 23 to be matched with the limiting plate 22 and to be separated from the support rod 5, in the process, the positioning lug 233 on the movable clamping block 23 slides into the positioning groove 221 of the limiting plate 22, the resetting accuracy is guaranteed, and finally the linear driving assembly 1 drives the support rod grabbing assembly 2 to reset to wait for the next training to perform safety protection.