CN112169285B

CN112169285B - Volleyball elbow bending and ball cushion corrector

Info

Publication number: CN112169285B
Application number: CN202011054662.9A
Authority: CN
Inventors: 张金瑞; 贾健; 李常浩; 曹军; 皇甫海东
Original assignee: Shangqiu Institute of Technology
Current assignee: Shangqiu Institute of Technology
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-11-05
Anticipated expiration: 2040-09-29
Also published as: CN112169285A

Abstract

The invention provides a volleyball elbow bending and cushioning ball corrector, which comprises a main rotating part, a traction device, two groups of arm fixing devices and two groups of telescopic devices, wherein the main rotating part is provided with a first arm fixing device and a second arm fixing device; one end of each elastic band of each group of arm fixing devices is fixed at the end part of the semicircular arm ring through a fixing buckle; the threaded sleeve of each group of the telescopic devices is in threaded fit with the first screw; two first mounting plates are fixed on the arc top of each semicircular arm ring, and a first rotating block is fixed on the threaded sleeve and is rotationally connected with the two first mounting plates; the other end of each first screw rod is fixed with two joint plates, and the main rotating part is rotationally connected with the two joint plates of the two groups of telescopic devices; the traction device comprises a spring and two second rotating blocks; every fixed plate top all fixedly is provided with two second mounting panels, and every second turning block all rotates with two second mounting panels to be connected, and the both ends of spring are fixed with the one end of two second turning blocks respectively. The device can assist in correcting the elbow bending and bolster ball on the premise of not limiting various actions of a trainer.

Description

Volleyball elbow bending and ball cushion corrector

Technical Field

The invention relates to the technical field of training equipment, in particular to a volleyball elbow bending and bolster correcting device.

Background

The base technology of volleyball is the base of the mat ball. The ball hitting technology is a ball hitting technology which enables an incoming ball to bounce off a cushion hitting surface through the attack action of arms on the basis of the coordinated force of the whole body, is a main method for catching a service ball, catching a button ball, catching a hanging ball, catching and blocking the returning ball and treating various difficult balls, and is the basis for ensuring the attack of the method. When the mat ball is used, the correct preparation posture, the reasonable batting hand shape, the accurate batting action, the reasonable batting part and the proper force application angle between the arm and the ground are required to obtain the good mat ball effect. However, the beginners often unconsciously adopt the wrong actions of bending the elbow and padding the ball, which affects the stability and accuracy of the padding ball.

At the present stage, the volleyball elbow bending and ball cushion is usually corrected manually one by one, so that the energy of a coach is greatly consumed; if the traditional mechanical structure is adopted to forcibly limit the elbow, the action and the exhibition of the trainer are easily influenced, and the trainer is easily injured. Therefore, the invention provides a volleyball elbow bending and bolster ball corrector.

Disclosure of Invention

In order to solve the above problems, the present invention provides a volleyball elbow bending bolster ball corrector. The device can assist in correcting the elbow bending and bolster ball on the premise of not limiting various actions of a trainer.

In order to achieve the above purpose, the present invention provides the following technical solutions.

The volleyball elbow bending and cushioning ball corrector comprises a main rotating part, a traction device, two groups of arm fixing devices and two groups of telescopic devices;

each group of arm fixing devices comprises a semicircular arm ring and two elastic bands; one ends of the two elastic bands are fixedly arranged at the two end parts of the semicircular arm rings respectively through fixing buckles;

each group of the telescopic devices comprises a threaded sleeve and a first screw rod; one end of the threaded sleeve is in threaded fit with one end of the first screw; two first mounting plates are fixedly arranged at the arc top of each semi-circular arm ring, a first rotating block is fixed at the other end of each threaded sleeve, and the first rotating block is rotatably connected with the two first mounting plates through a first rotating shaft;

two joint plates are fixed at the other end of each first screw, and a fixing plate is fixedly arranged at the top of each joint plate; two ends of the main rotating part are respectively and rotatably connected with the two joint plates of the two groups of telescopic devices through a second rotating shaft;

the traction device comprises a spring and two second rotating blocks; every the fixed plate top all fixedly is provided with two second mounting panels, every the second turning block all passes through the third pivot and two the second mounting panel rotates to be connected, the both ends of spring respectively with two the one end of second turning block is fixed.

Preferably, an arc elbow pad is also included; and a second screw rod is fixed at the arc top of the elbow joint pad and is in threaded connection with the bottom of the main rotating part.

Preferably, a rubber pad is fixedly arranged inside the elbow joint pad, and a pressure sensor is arranged in the rubber pad on the arc top of the elbow joint pad.

Preferably, a tension sensor is fixedly arranged at an end of each second rotating block, and two ends of each spring are respectively fixed with one tension sensor.

Preferably, a spongy cushion is arranged in the semicircular arm ring.

Preferably, the surface of the spongy cushion is provided with an anti-skid layer.

Preferably, the ends of the two elastic bands are provided with magic tapes matched with each other.

The invention has the beneficial effects that:

the invention provides a volleyball elbow bending and bolster ball corrector, which can assist a trainer to maintain correct actions through an arm fixing device and a traction device which are fixed on an arm, and effectively assist the trainer to correct elbow bending and bolster ball actions; the device can adjust the adaptability according to the length of the arm of the trainer through the telescopic device, so that the trainer is prevented from being injured and uncomfortable; through changing the spring in the traction device, the dynamics of traction can be adjusted, and the injury is avoided.

The invention is further described with reference to the following figures and examples.

Drawings

Fig. 1 is an overall structure view of a volleyball elbow bending and bolster ball corrector according to an embodiment of the present invention;

FIG. 2 is a drawing device and a telescopic device of the volleyball elbow bending and bolster ball corrector according to the embodiment of the invention;

fig. 3 is a structural view of an arm fixing device of a volleyball elbow bending and bolster ball corrector according to an embodiment of the present invention.

In the figure: 1. a joint plate; 2. a second screw; 3. an elbow joint pad; 4. magic tape; 5. elastic bands; 6. a fixing buckle; 7. a semi-circular arm ring; 8. a first mounting plate; 9. a first rotating block; 10. a threaded sleeve; 11. a first screw; 12. a second turning block; 13. a spring; 14. a second mounting plate; 15. a main rotating member; 16. a fixing plate; 17. a second rotating shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Examples

A volleyball elbow bending and cushioning ball corrector is shown in figures 1-3 and comprises a main rotating part 15, a traction device, two groups of arm fixing devices and two groups of telescopic devices;

each group of arm fixing devices comprises a semicircular arm ring 7 and two elastic bands 5, as shown in figure 3; one end of each elastic band 5 is fixedly arranged at two ends of the corresponding semicircular arm ring 7 through the fixing buckle 6, the tail ends of the two elastic bands 5 are respectively provided with the magic tapes 4 matched with each other, the semicircular arm rings 7 are fixed on the arms through the magic tapes 4 on the elastic bands 5, the limiting of the device is carried out, and the phenomenon that the training effect is influenced due to the fact that the device falls off during training is avoided;

each set of telescoping devices comprises a threaded sleeve 10 and a first threaded rod 11, as shown in fig. 1; one end of the threaded sleeve 10 is in threaded fit with one end of the first screw 11, and the position between the two semi-circular arm rings 7 can be extended or shortened by rotating the first screw 11 or the threaded sleeve 10; two first mounting plates 8 are fixedly arranged at the arc top of each semi-circular arm ring 7, a first rotating block 9 is fixed at the other end of each threaded sleeve 10, the first rotating block 9 is rotatably connected with the two first mounting plates 8 through a first rotating shaft, and the revolute pair is arranged, so that the bending of the arm cannot be influenced in the use process;

two joint plates 1 are fixed at the other end of each first screw rod 11, and as shown in fig. 1, a fixing plate 16 is fixedly arranged at the top of each joint plate 1; two ends of the main rotating part 15 are respectively connected with the two joint plates 1 of the two groups of telescopic devices in a rotating way through a second rotating shaft 17;

the pulling device comprises a spring 13 and two second turning blocks 12, as shown in fig. 2; two second mounting plates 14 are fixedly arranged at the top of each fixing plate 16, each second rotating block 12 is rotatably connected with the two second mounting plates 14 through a third rotating shaft, and two ends of each spring 13 are respectively fixed with one end of each second rotating block 12; through the elasticity of the spring 13 and the characteristic of force-unloading reset, the two arms can be pulled without influencing the movement of the small arm and the large arm.

Preferably, the elbow joint protection pad also comprises an elbow joint pad 3 which is used for protecting an elbow and simultaneously does not cause damage to the joint due to the arrangement of a structure; the arc top of the elbow joint pad 3 is fixed with a second screw rod 2, the second screw rod 2 is in threaded connection with the bottom of the main rotating part 15, the height of the elbow joint pad 3 can be adjusted by rotating the second screw rod 2, and the comfort level is increased.

Specifically, 3 internal fixation of elbow joint pad is provided with the rubber pad, is provided with pressure sensor in the rubber pad of 3 arc tops of elbow joint pad, adjusts the height through the measured pressure condition, avoids the elbow to apply pressure too big, causes the injury.

Preferably, the end of each second rotating block 12 is fixedly provided with a tension sensor, and the two ends of each spring 13 are fixed to one tension sensor respectively, so that whether the tension value exceeds the maximum tension which can be borne by a trainer or not is judged, and injury is avoided.

In addition, the semicircular arm rings 7 are internally provided with spongy cushions, and the surfaces of the spongy cushions are provided with anti-slip layers, so that the spongy cushions are prevented from falling off in the using process.

In the present embodiment, the first and second electrodes are,

the device is all installed to both arms: according to the length of the arm of the user and the force which can be adapted, a proper spring is selected, and the length of the whole device can be adjusted by rotating the two fixing devices and the threaded sleeve 10 and the first screw rod 11 which are matched in a threaded manner; the distance between the elbow joint pad 3 and the device is adjusted by rotating the second screw rod 2, so that the pressing force of the elbow during elbow bending correction can be adjusted;

the elastic band 5 of the device is opened, the two semicircular arm rings 7 are respectively fixed on the large arm and the small arm, and the device is fixed on the arm through the elastic band 5 and the magic tapes 4 on the elastic band 5;

the trainer can start training, whether elbows are bent or not can be judged according to the pressure value measured by the pressure sensor, and meanwhile, the trainer can be helped to keep the posture of the billiards according to the elastic force of the spring 13 to find the feeling of the billiards gesture; in addition, the force application size of the spring 13 is judged through the detection value of the tension sensor, the distance between the two arm fixing devices can be readjusted according to actual conditions, and the injury to a trainer caused by overlarge tension is avoided.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The volleyball elbow bending and cushioning ball corrector is characterized by comprising a main rotating piece (15), a traction device, two groups of arm fixing devices and two groups of telescopic devices;

each group of the arm fixing devices comprises a semicircular arm ring (7) and two elastic bands (5); one ends of the two elastic bands (5) are respectively fixedly arranged at the two end parts of the semicircular arm rings (7) through fixing buckles (6);

each group of the telescopic devices comprises a threaded sleeve (10) and a first screw (11); one end of the threaded sleeve (10) is in threaded fit with one end of the first screw (11); two first mounting plates (8) are fixedly arranged at the arc top of each semi-circular arm ring (7), a first rotating block (9) is fixed at the other end of each threaded sleeve (10), and the first rotating block (9) is rotatably connected with the two first mounting plates (8) through a first rotating shaft;

two joint plates (1) are fixed at the other end of each first screw (11), and a fixing plate (16) is fixedly arranged at the top of each joint plate (1); two ends of the main rotating part (15) are respectively and rotatably connected with the two joint plates (1) of the two groups of telescopic devices through second rotating shafts (17);

the pulling device comprises a spring (13) and two second rotating blocks (12); two second mounting plates (14) are fixedly arranged at the top of each fixing plate (16), each second rotating block (12) is rotatably connected with the two second mounting plates (14) through a third rotating shaft, and two ends of each spring (13) are respectively fixed with one end of each second rotating block (12);

also comprises an arc elbow joint pad (3); a second screw rod (2) is fixed at the arc top of the elbow joint pad (3), and the second screw rod (2) is in threaded connection with the bottom of the main rotating part (15);

a rubber pad is fixedly arranged inside the elbow joint pad (3), and a pressure sensor is arranged in the rubber pad at the arc top of the elbow joint pad (3).

2. The volleyball elbow bending and bolster ball corrector as claimed in claim 1, wherein a tension sensor is fixedly arranged at the end of each second rotating block (12), and two ends of the spring (13) are respectively fixed with one tension sensor.

3. The volleyball elbow bending and resting ball corrector as claimed in claim 1, wherein a spongy cushion is arranged in the semicircular arm ring (7).

4. The volleyball elbow bending and resting ball corrector as claimed in claim 3, wherein the sponge mat is provided with an anti-slip layer on the surface.

5. The volleyball elbow bending and resting ball corrector as claimed in claim 1, wherein the ends of the two elastic bands (5) are provided with magic tapes (4) which are matched with each other.