CN110384598B

CN110384598B - Scoliosis posture correction device

Info

Publication number: CN110384598B
Application number: CN201910723808.5A
Authority: CN
Inventors: 辛健; 甘召华
Original assignee: Affiliated Hospital of Shandong University of Traditional Chinese Medicine
Current assignee: Affiliated Hospital of Shandong University of Traditional Chinese Medicine
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2021-06-15
Anticipated expiration: 2039-08-07
Also published as: CN110384598A

Abstract

The invention discloses a scoliosis convex posture correction device which comprises a base and a supporting plate, wherein the bottom of the supporting plate is fixedly connected with the rear side of the base, a supporting cylinder is fixedly arranged in the middle of the top of the base, a lining rod is inserted into the supporting cylinder, the left side and the right side of the supporting plate are fixedly connected with holding rods, and an adjusting plate is fixedly arranged on the front side of the supporting plate. The invention drives the jacking block to jack up or reset in a pedal mode, thereby achieving the aim of correcting scoliosis, having good correction effect, training legs while correcting, adjusting the height of the seat body according to the use requirement, satisfying the correction treatment of the scoliosis left and right by changing the sitting posture direction, and having more flexible use.

Description

Scoliosis posture correction device

Technical Field

The invention belongs to the technical field related to scoliosis correction, and particularly relates to a scoliosis posture correction device.

Background

Scoliosis is commonly called scoliosis, the spine of a normal person is a straight line from the back view, namely the coronal plane, the trunk is bilaterally symmetrical, and scoliosis can be diagnosed as scoliosis by displaying that the spine is bent laterally by an X-ray film. Scoliosis can affect the normal growth and development of bones of a patient, scoliosis can deform the body of the patient, and serious patients can affect the cardio-pulmonary function and even involve the spinal cord, thereby causing paralysis.

For the treatment of spinal deformities, the following solutions are commonly used in the prior art:

chinese patent application 201320195354.7 discloses a visual spinal malformed seat traction device without heavy hammer traction force, which comprises a suspension bracket, a lower traction belt, a reeling type traction lifting mechanism and an electronic tensiometer, wherein the reeling type traction lifting mechanism comprises an upper traction belt which can be reeled and tensioned; the suspension bracket is formed by connecting a suspension rod, a vertical rod, an inclined rod, an upper connecting rod and a lower connecting rod; the hanging rod is fixedly connected to the top end of the vertical rod, and the inclined rod is connected between the hanging rod and the vertical rod to form a triangular stable supporting structure; the upright stanchion is connected to the back side of the wheelchair through an upper connecting rod and a lower connecting rod; the winding type traction lifting mechanism is hung at the other end of the suspension rod; the end of the upper traction belt is connected to the upper end of the electronic tension meter. By adopting the weight-free reeling type traction lifting mechanism and the electronic tension meter, the weight of the existing traction device is eliminated, the mobility and the safety of the traction device are improved, and the visual accurate control of the traction force can be realized.

Chinese patent application 200710011520.2 discloses a medical appliance for correcting spinal curvature, which comprises a base, a longitudinal lifting mechanism, a transverse telescopic mechanism, a horizontal adjusting pressure rod, a left-right-vertical-horizontal adjusting mechanism and a pulsating correcting arm. The vertical lifting mechanism is fixed on the base through a flange plate, the transverse telescopic mechanism is fixedly connected to the upper end of the vertical lifting mechanism, the other end of the transverse telescopic mechanism is connected with the middle position of the horizontal adjusting pressure rod through a cross beam support, two ends of the horizontal adjusting pressure rod are respectively connected with the upper ends of the left-right-vertical-horizontal adjusting mechanism through upper connectors, the lower end of the left-right-vertical-horizontal adjusting mechanism is connected with the left-right telescopic steering rod through lower connectors, the pulsation correcting arm is connected with one end of the left-right telescopic steering rod, and the lower end of the pulsation correcting arm is provided with a correcting head.

However, in the above technical solutions for correcting spinal deformity in the prior art, devices or methods such as posterior traction are mainly adopted, and the correction process is painful; if the stent therapy or the operation is adopted for treatment, the operation treatment risk is high, the possibility of leaving various sequelae is high, a rigid spine is replaced by a movable malformed spine, a large scar which cannot be removed for the whole life is left, and the patient suffers from pain and regret for the whole life.

In view of the above-described problems of the prior art, the present invention provides a scoliosis posture correction device that can solve the above-described problems in advance by a preventive method.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a scoliosis posture correction device, which avoids the later-stage spinal deformity through early prevention and self-adjustment and solves the technical problems in the prior art.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

the utility model provides a device is corrected to convex posture of backbone side, includes base and backup pad, the bottom of backup pad is connected with the rear side of base, be provided with a support section of thick bamboo in the middle of the top of base, the inside of a support section of thick bamboo is pegged graft and is had the inside lining pole, the left and right sides of backup pad all is connected with the holding rod, the front of backup pad is provided with the regulating plate, the bottom side movable mounting of backup pad has the first pivot of symmetrical arrangement, the top left and right sides of base all is provided with pedal mechanism, pedal mechanism includes mount, second pivot, pedal board, second gear and first chain.

The side movable mounting has the third pivot in the back top of backup pad, the movable groove has been seted up to the inside of regulating plate, the inside movable mounting in movable groove has the regulation pole, the both ends of adjusting the pole all are provided with the screw thread, slidable mounting has symmetrical arrangement's movable block in the movable groove.

Preferably, the movable block is sleeved on the adjusting rod in a threaded manner.

Preferably, the outer end of the movable block is hinged with a supporting rod, and one end, far away from the movable block, of the supporting rod is hinged with a jacking block.

Optionally, the lining rod is connected with the support cylinder through an adjusting bolt, and a seat body is arranged at the top end of the lining rod.

Optionally, a first gear is arranged on the end of the first rotating shaft located on the front face of the supporting plate; one side of the first chain, which is far away from the pedal mechanism, is meshed with the first gear.

Optionally, the second rotating shaft is movably connected with the fixed frame, and two ends of the second rotating shaft penetrate through the side wall of the fixed frame and are connected with the pedal plate; the second gear is sleeved on the middle part of the second rotating shaft; the first chain is engaged on the second gear.

Optionally, a third gear is arranged at an end of the first rotating shaft located behind the supporting plate, a fourth gear is arranged on the third rotating shaft, and the third gear is connected with the fourth gear through a second chain.

Optionally, the number of the threads is two, and the two threads are opposite to each other.

Optionally, the movable block is matched with the movable groove; the one end that the third pivot is located the regulating plate is provided with the action wheel, the diapire that the regulation pole runs through the activity groove is provided with from the driving wheel, the action wheel with from the meshing of driving wheel.

Optionally, in order to better perform initial correction on the spine and prevent the spine from deforming, a groove is formed in one side, facing the spine, of the top block, and the groove is matched with a protrusion of the spine on the back; one side of the top block facing the spine is provided with a flexible material, and the thickness H of the flexible material is 8-25 mm.

Optionally, the flexible material is one of polyurethane foam, rubber and the like, and the rebound resilience K of the flexible material is 60-87%; preferably, the thickness H and the resilience K meet the condition that H.K is more than or equal to 5.2 and less than or equal to 21.7; when the H.K is less than 5.2, the spine is easy to be injured when the top block is pressed against the spine; when H · K is more than 21.7, the correction effect on the spine is reduced.

Optionally, the supporting rod is a non-rigid rod, the supporting rod generates certain bending deformation under the action of the spine on the ejecting block in the spine correction of the correction device, and the ejecting block performs secondary correction on the spine in the process of restoring deformation of the supporting rod so as to improve the correction effect.

Optionally, the support rod is made of a non-metal material, and the axial resilience J of the support rod is 8-17%. The axial rebound rate is the ratio of the deformation of the strut after the axial maximum force F is applied to the strut to the axial length of the strut in a natural state.

Optionally, in order to improve the correction effect of the correction device on the spine, the thickness H, the resilience rate K, and the resilience rate J satisfy the following relationship:

H=δ·(K/J)；

wherein, the delta is a thickness factor and has a value range of 0.85 to 6.42.

The invention also discloses a method for correcting the scoliosis posture, which comprises the following steps:

a: the user simply warms up by means of in-situ jumping and push-up, wherein the in-situ jumping and the push-up are alternately carried out, and the warming-up time is 10 minutes;

b: taking out the correction device, drawing the lining rod outwards according to the use requirement and then fixing the lining rod through the adjusting bolt, thereby adjusting the seat body to a proper height;

c: selecting left side orientation or right side orientation according to the bent part of the spine on the self side to sit on the seat body, wherein if the left side is bent, the user sits rightwards, if the right side is bent, the user sits leftwards, the user sits straight and backs, and then the two hands tightly hold the holding rod on the side on which the user sits;

d: the two feet are placed on the pedal plates of the pedal mechanism facing one side, the pedals are rotated, the adjusting rods are driven to rotate through the toothed chain drive, the adjusting rods drive the two movable blocks to move close to each other, the supporting rods abut against the ejecting blocks to jack up and correct the lateral bending parts of the spine, and then the pedals are rotated reversely, so that the ejecting blocks can be reset;

e: repeatedly jacking and resetting the jacking block, wherein the duration of correction is 30 minutes, and correction is performed once every two days until the spine of the body is recovered;

f: after the correction is finished, the holding rod is wiped clean, and the correcting device is shielded by using the shielding cloth.

(III) advantageous effects

Compared with the prior art, the scoliosis posture correction device provided by the invention has the following beneficial effects and advantages:

(1) the scoliosis posture correction device drives the jacking block to jack up or reset in a pedal mode, so that the purpose of correcting scoliosis is achieved, the correction effect is good, and legs can be exercised while correction is performed.

(2) The scoliosis posture correction device provided by the invention can adjust the height of the seat body according to the use requirement, can be used for correcting and treating left scoliosis and right scoliosis by changing the sitting posture direction, and is more flexible to use.

(3) The scoliosis posture correction device provided by the invention is characterized in that the groove at one side of the top block facing the spine is arranged, and the groove is matched with the protrusion of the spine at the back; and one side of the top block facing the spine is provided with a flexible material so as to correct the spine.

(4) The scoliosis posture correction device provided by the invention can better correct the spine and improve the correction effect by setting the type and the thickness of the flexible material and the range and the relation of the rebound rate.

(5) According to the scoliosis posture correction device provided by the invention, the supporting rod is arranged to be the non-rigid rod, the supporting rod generates certain bending deformation under the action force of the spine on the top block in the correction of the spine by the correction device, and the top block performs secondary correction on the spine in the process of restoring deformation of the supporting rod, so that the correction effect is improved.

(6) The scoliosis posture correction device provided by the invention further improves the correction effect of the correction device on the spine by setting the relation among the thickness H, the rebound rate K and the rebound rate J.

Drawings

FIG. 1 is a schematic front view of the present invention.

FIG. 2 is a schematic view of a grip of the present invention.

Fig. 3 is a schematic side view of the footrest mechanism of the present invention.

Fig. 4 is a rear view of the support plate of the present invention.

FIG. 5 is a schematic cross-sectional view of an adjustment plate according to the present invention.

In the figure: the device comprises a base 1, a supporting plate 2, a supporting cylinder 3, a lining rod 4, an adjusting bolt 5, a seat body 6, a holding rod 7, an adjusting plate 8, a first rotating shaft 9, a first gear 10, a pedal mechanism 11, a fixed frame 12, a second rotating shaft 13, a pedal plate 14, a second gear 15, a first chain 16, a third gear 17, a third rotating shaft 18, a fourth gear 19, a second chain 20, a movable groove 21, an adjusting rod 22, a movable block 23, a supporting rod 24, a top block 25, a driven wheel 26 and a driving wheel 27.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

In the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected or detachably connected; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Example 1

According to the figures 1-5, a scoliosis posture correction device comprises a base 1 and a support plate 2, the bottom of the support plate 2 is fixedly connected with the rear side of the base 1, a support cylinder 3 is fixedly installed in the middle of the top of the base 1, a lining rod 4 is inserted into the support cylinder 3, the lining rod 4 is fixed with the support cylinder 3 through an adjusting bolt 5, a seat body 6 is fixedly installed at the top end of the lining rod 4, the lining rod 4 can be pulled outwards and fixed through the adjusting bolt 5 according to use requirements, and therefore the height of the seat body 6 can be adjusted.

The equal fixedly connected with holding rod 7 in the left and right sides of backup pad 2 for the user grips, when the user grips holding rod 7, thereby makes user's shoulder not rock at the correction in-process. The front of the supporting plate 2 is fixedly provided with an adjusting plate 8, the bottom side of the supporting plate 2 is movably provided with first rotating shafts 9 which are symmetrically arranged, the first rotating shaft 9 is positioned on the end part of the front of the supporting plate 2 and is fixedly provided with a first gear 10, the left side and the right side of the top of the base 1 are both fixedly provided with pedal mechanisms 11, each pedal mechanism 11 comprises a fixed frame 12, a second rotating shaft 13, a pedal plate 14, a second gear 15 and a first chain 16, the second rotating shaft 13 is movably connected with the fixed frame 12, both ends of the second rotating shaft 13 penetrate through the side wall of the fixed frame 12 and are fixedly connected with the pedal plate 14, the second gear 15 is fixedly sleeved on the middle part of the second rotating shaft 13, the first chain 16 is meshed on the second gear 15, one side of the first chain 16 far away from the pedal mechanism 11 is meshed with the first gear 10, when the pedal plate 14 is rotated and drives the second rotating shaft 13 to rotate, the second rotating shaft 13 drives the second gear 15 to rotate, and the second gear 15 drives the first gear 10 and the first rotating shaft 9 thereon to rotate through the first chain 16.

According to fig. 4 and 5, a third gear 17 is fixedly installed at the end portion of the first rotating shaft 9 located at the rear of the support plate 2, a third rotating shaft 18 is movably installed at the top side of the rear of the support plate 2, a fourth gear 19 is fixedly installed on the third rotating shaft 18, the third gear 17 is connected with the fourth gear 19 through a second chain 20, wherein the first rotating shaft 9 rotates and simultaneously drives the third gear 17 to rotate, the third gear 17 drives the fourth gear 19 and the third rotating shaft 18 thereon to rotate through the second chain 20, a movable groove 21 is formed in the adjusting plate 8, an adjusting rod 22 is movably installed in the movable groove 21, threads are respectively arranged at two ends of the adjusting rod 22, the two threads are opposite, a movable block 23 which is symmetrically arranged is slidably installed in the movable groove 21, and the movable block 23 is matched with the movable groove 21, the movable block 23 is sleeved on the adjusting rod 22 through threads.

The outer end of movable block 23 articulates there is branch 24, branch 24 keeps away from that the one end of movable block 23 articulates there is kicking block 25, when adjusting pole 22 forward rotation, two movable blocks 23 are close to the removal each other along activity groove 21, and drive the outside jack-up of kicking block 25 through branch 24, when adjusting pole 22 antiport, can accomplish the reseing of kicking block 25, the one end fixed mounting that third pivot 18 is located regulating plate 8 has action wheel 27, it has from driving wheel 26 to adjust pole 22 and run through the diapire of activity groove 21 and fixed mounting, action wheel 27 and from driving wheel 26 meshing, through gear engagement, thereby be convenient for third pivot 18 and adjust the transmission between the pole 22.

A method of correcting a scoliotic posture comprising the steps of:

a: the user simply warms up by means of in-situ jumping and push-up, wherein the in-situ jumping and the push-up are alternately carried out, and the warming-up time is 10 minutes.

B: taking out the correcting device, drawing the lining rod 4 outwards according to the use requirement, and then fixing the lining rod by the adjusting bolt 5, thereby adjusting the seat body 6 to the proper height.

C: the user can sit on the seat body 6 with left side orientation or right side orientation according to the bent part of the spine on the self side, wherein if the user is bent on the left side, the user sits on the right side, if the user is bent on the right side, the user sits on the left side, the user sits straight and stands back, and then the user tightly holds the holding rod 7 on the side where the user sits with both hands.

D: the two feet are placed on the pedal plates 14 of the pedal mechanism 11 facing one side, the pedals are rotated, the adjusting rod 22 is driven to rotate through the toothed chain transmission, the adjusting rod 22 drives the two movable blocks 23 to move close to each other, the supporting rod 24 abuts against the ejecting block 25 to jack up and correct the scoliosis part, and then the ejecting block 25 can be reset by reversely rotating the pedals.

E: and (4) repeatedly jacking and resetting the jacking block 25, wherein the duration of correction is 30 minutes, and correction is performed once every two days until the spine of the body is recovered.

F: after the correction is finished, the holding rod 7 is wiped clean, and the correcting device is shielded by using a shielding cloth.

In summary, the following steps: cross the mode of pedal, drive kicking block 25 jack-up or reset to reach the purpose of correcting scoliosis, correct effectually, and can also temper the shank in the correction, and can adjust the height of pedestal 6 according to the user demand, can satisfy through changing the position of sitting orientation and correct the treatment to scoliosis left side and right side are protruding, use more in a flexible way.

Example 2

The utility model provides a convex posture orthotic devices of backbone side, includes base 1 and backup pad 2, the bottom of backup pad 2 and the rear side fixed connection of base 1, fixed mounting has a support section of thick bamboo 3 in the middle of the top of base 1, it has inside pole 4 to peg graft in the inside of a support section of thick bamboo 3, inside pole 4 is fixed with a support section of thick bamboo 3 through adjusting bolt 5, the top fixed mounting of inside pole 4 has a pedestal 6, can be according to the use needs, and outside pull inside pole 4 is fixed through adjusting bolt 5 to adjust the height of pedestal 6.

According to fig. 4 and 5, first pivot 9 is located the rear tip of backup pad 2 and fixedly mounted with third gear 17, the back top side movable mounting of backup pad 2 has third pivot 18, fixedly mounted with fourth gear 19 on the third pivot 18, third gear 17 is connected with fourth gear 19 through second chain 20, wherein first pivot 9 pivoted drives third gear 17 simultaneously and rotates, third gear 17 drives fourth gear 19 and third pivot 18 on it through second chain 20 and rotates, movable groove 21 has been seted up to the inside of regulating plate 8, the inside movable mounting of movable groove 21 has regulation pole 22, the both ends of adjusting pole 22 all are provided with the screw thread, and the screw thread handedness is set for according to actual need. Sliding installation has the movable block 23 of symmetrical arrangement in the activity groove 21, movable block 23 and activity groove 21 cooperation setting, movable block 23 screw thread cup joints on adjusting pole 22. The adjusting rod 22 rotates to drive the movable block 23 to move.

In order to better perform initial correction on the spine and prevent the spine from deforming, one side of the top block, which faces the spine, is provided with a groove, and the groove is matched with a protrusion of the spine on the back; one side of the top block facing the spine is provided with a flexible material, and the thickness H of the flexible material is 8-25 mm.

The flexible material is one of polyurethane foam, rubber and the like, and the rebound resilience K of the flexible material is 60-87%; the thickness H and the resilience K meet the condition that H.K is more than or equal to 5.2 and less than or equal to 21.7; when the H.K is less than 5.2, the spine is easy to be injured when the top block is pressed against the spine; when H · K is more than 21.7, the correction effect on the spine is reduced.

The supporting rod is a non-rigid rod, the supporting rod generates certain bending deformation under the action force of the spine on the top block in the process that the correcting device corrects the spine, and the top block performs secondary correction on the spine in the process that the supporting rod recovers deformation so as to improve the correcting effect.

The support rod can be made of a non-metal material, and the axial resilience J of the support rod is 8-17%. The axial rebound rate is the ratio of the deformation of the strut after the axial maximum force F is applied to the strut to the axial length of the strut in a natural state.

In order to improve the correction effect of the correction device on the spines of people in different age groups, the thickness H, the rebound rate K and the rebound rate J satisfy the following relations:

H=δ·(K/J)；

wherein, the delta is a thickness factor and has a value range of 0.85 to 6.42.

It is noted that in the present disclosure, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacted with the first and second features, or indirectly contacted with the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A scoliosis posture correcting device comprises a base (1) and a support plate (2); the method is characterized in that: the bottom of the supporting plate (2) is connected with the rear side of the base (1), a supporting cylinder (3) is arranged in the middle of the top of the base (1), a lining rod (4) is inserted into the supporting cylinder (3), the left side and the right side of the supporting plate (2) are both connected with holding rods (7), an adjusting plate (8) is arranged on the front side of the supporting plate (2), first rotating shafts (9) which are symmetrically arranged are arranged on the bottom side of the supporting plate (2), pedal mechanisms (11) are arranged on the left side and the right side of the top of the base (1), and each pedal mechanism (11) comprises a fixed frame (12), a second rotating shaft (13), a pedal plate (14), a second gear (15) and a first chain (16); a third rotating shaft (18) is arranged on the top side of the back of the supporting plate (2), a movable groove (21) is formed in the adjusting plate (8), an adjusting rod (22) is arranged in the movable groove (21), and movable blocks (23) which are symmetrically arranged are arranged in the movable groove (21) in a sliding manner;

the movable block (23) is matched with the movable groove (21); a driving wheel is arranged at one end, positioned in the adjusting plate, of the third rotating shaft (18), the adjusting rod (22) penetrates through the bottom wall of the movable groove (21) and is provided with a driven wheel, and the driving wheel is meshed with the driven wheel; the outer end of the movable block is hinged with a supporting rod, and one end of the supporting rod, which is far away from the movable block, is hinged with a jacking block; a groove is formed in one side, facing the spine, of the top block, and the groove is matched with a protrusion of the spine on the back; one side of the top block facing the spine is provided with a flexible material;

the lining rod (4) is fixed with the supporting cylinder (3), and a seat body (6) is arranged at the top end of the lining rod (4); selecting left side orientation or right side orientation according to the bent part of the spine at the self side to sit on the seat body (6), wherein if the left side is bent, the user sits rightwards, if the right side is bent, the user sits leftwards, the user sits straight and stands back, and then the two hands tightly hold the holding rod at the sitting side of the user; the height of the seat body (6) is adjusted according to the use requirement, and the treatment of correcting the left scoliosis and the right scoliosis can be met by changing the sitting posture orientation.

2. The device of claim 1, wherein: the end part of the first rotating shaft (9) positioned on the front surface of the supporting plate (2) is provided with a first gear (10).

3. The device of claim 1, wherein: the second rotating shaft (13) is movably connected with the fixed frame (12), and two ends of the second rotating shaft (13) penetrate through the side wall of the fixed frame (12) and are connected with the pedal plate (14); the second gear (15) is fixedly sleeved on the middle part of the second rotating shaft (13); the first chain (16) is engaged on the second gear (15).

4. The device of claim 1, wherein: the end part of the first rotating shaft (9) behind the supporting plate (2) is provided with a third gear (17), the third rotating shaft (18) is provided with a fourth gear (19), and the third gear (17) is connected with the fourth gear (19).

5. The device of claim 3, wherein: the side of the first chain (16) far away from the pedal mechanism (11) is meshed with the first gear (10).