CN110711348A - Treadmill for physical training and use method thereof - Google Patents

Abstract

The invention discloses a treadmill for physical training, comprising a running belt platform whose front end is tilted upward, a running belt that can be driven by a motor is installed on the running belt platform; the bottom of the tail end of the running belt platform is installed on both sides There are rollers; the rollers are rolled and matched with the horizontal ground; the lower side of the front end of the running belt platform is provided with a base, and the base is connected to the front end of the running belt platform through a shock absorption mechanism; the structure of the invention is simple, The structure of the shock-absorbing air chamber makes the buffering process more stable; the rebound process is more gentle; the vibration intensity is reduced; at the same time, part of the impact energy is used to blow the athletes.

Description

Treadmill for physical training and method of using the same

technical field

The invention belongs to the field of treadmills.

Background technique

The shock-absorbing mechanism of the treadmill can effectively protect the knees of the athlete from impact. The existing shock-absorbing mechanism has the problems that the buffer force is not stable and the rebound force of the buffer plate is too large; and a certain amount of impact energy will be generated during the shock-absorbing process. , the existing treadmill does not use this part of the energy.

SUMMARY OF THE INVENTION

Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a treadmill with good shock absorption performance and used for physical training and a method of using the same.

Technical solution: In order to achieve the above purpose, the treadmill used for physical training of the present invention includes a running belt platform whose front end is tilted upward, and a running belt that can be driven by a motor is installed on the running belt platform; the tail of the running belt platform is installed. Rollers are installed on both sides of the bottom of the end; the rollers cooperate with the horizontal ground to roll;

The lower side of the front end of the running belt platform is provided with a machine base, and the machine base is connected with the front end of the running belt platform through a shock absorption mechanism for shock absorption;

The two ends of the machine base are respectively symmetrically and integrally provided with vertical left and right vertical rods; a number of air outlets are arranged on the rear sides of the upper ends of the left and right vertical rods; The direction of the air ejected at the place can blow on the runners running on the running belt.

Further, handrails are installed on the upper ends of the left and right uprights.

Further, the shock absorption mechanism includes a left guide rail seat and a right guide rail seat symmetrical on both sides of the upper end of the machine base; the upper sides of the left guide rail seat and the right guide rail seat are respectively fixed with horizontal left guide rails and extending along the left and right directions. the right guide rail; the left guide rail and the right guide rail are respectively provided with a left guide rail groove and a right guide rail groove along the length direction; a left sliding block and a right sliding block are respectively slidably arranged in the left guide rail groove and the right guide rail groove; The upper sides of the block and the right slider are respectively fixed with a lower left hinge seat and a lower right hinge seat;

It also includes a left link and a right link with left-right symmetry and lower ends inclined inward, the lower end of the left link is hingedly connected to the lower left hinge seat, and the lower end of the right link is hingedly connected to the lower right hinge seat;

It also includes a strip-shaped buffer plate extending in the left-right direction, the upper left hinge seat and the upper right hinge seat are symmetrically installed on both sides of the bottom of the buffer plate, the upper end of the left link is hingedly connected to the upper left hinge seat, and the upper left hinge seat is hingedly connected. The upper end of the right link is hingedly connected to the upper right hinge seat.

Further, the front end of the running belt platform is fixedly connected with a connecting beam extending along the left and right, and the connecting beam is hingedly connected to the buffer plate through a number of hinges; the up and down displacement of the buffer plate can be driven by several hinges. The front end of the running belt platform moves up and down accordingly.

Further, a vertical left guide post is fixed on the upper side of the left end of the left rail seat, and a vertical right guide post is fixed on the upper side of the right end of the right rail seat; the two ends of the buffer plate are symmetrically arranged There are guide holes running through the upper and lower sides, and the left guide post and the right guide post are respectively coaxially moved upward through the two guide holes; the left guide post and the right guide post are respectively sleeved with a left return spring and a right return spring. The left return spring is located between the buffer plate and the left rail seat; the right return spring is located between the buffer plate and the right rail seat.

Further, the top ends of the left guide post and the right guide post are respectively fixed with a left top cap and a right top cap.

Further, a fixed cylinder with an axis extending in the left-right direction is arranged above the middle of the upper side of the base, and the lower end of the fixed cylinder is integrally and fixedly connected to the base through a vertical support column; the A left telescopic cylinder is coaxially disposed on the left side of the fixed cylinder, a right telescopic cylinder is coaxially disposed on the right side of the fixed cylinder, and the right end of the left telescopic cylinder is in fixed communication with the left end of the fixed cylinder; The left end of the right telescopic cylinder is in fixed communication with the right end of the fixed cylinder; the left end of the left telescopic cylinder is coaxially sealed and fixed with a hard left disk body, and the right end of the right telescopic cylinder is coaxially sealed A rigid right disc body is fixedly arranged;

The inner side of the integrated structure formed by the left telescopic cylinder, the fixed cylinder body, the right telescopic cylinder, the left disk body and the right disk body is a shock-absorbing air chamber;

The right end of the left slider is fixedly connected with a left push rod extending to the right, and the left end of the right slider is fixedly connected with a right push rod extending to the left; the right end of the left push rod is fixedly connected to the the left disk body, the left end of the right push rod is fixedly connected to the right disk body and the right disk body through a right connecting piece;

The fixed cylinder is also fixedly provided with a ventilation pipe that communicates with the outside world, the inner end of the ventilation pipe is connected to the shock-absorbing air chamber cavity, and a first one-way valve is installed in the ventilation pipe, so that the outside air can pass through. The first one-way valve in the ventilation pipe enters the shock-absorbing air chamber cavity;

The inside of the machine base is provided with a shunt cavity, and the inside of the support column is provided with an air guide channel, and the air guide channel connects the shock absorption air chamber cavity and the flow shunt cavity with each other; A second one-way valve is provided, and the air in the shock-absorbing air chamber can be introduced into the shunt chamber through the second one-way valve in the air guide channel;

The two sides of the shunt cavity are respectively connected with a left air guide channel and a right air guide channel; a left air guide channel and a right air guide channel are respectively arranged in the left and right vertical bars along the length direction; The lower ends of the air channel and the right air guiding channel are respectively connected with the air outlet ends of the left air guiding channel and the right air guiding channel; the upper ends of the left air guiding channel and the right air guiding channel are respectively connected with a left air collecting chamber and a right air collecting chamber. , the air outlet on the left vertical rod and the air outlet on the right vertical rod are respectively communicated with the left air collecting chamber and the right air collecting chamber.

Further, the walls of the left telescopic cylinder and the right telescopic cylinder are made of natural latex, imitation latex, TPE or PVC material with a corrugated or zigzag cross-section, and the left and right telescopic cylinders can expand and contract along the axis direction.

Further, the use method of the treadmill for physical training:

When there is no athlete on the running belt platform, under the elastic return action of the left return spring and the right return spring, the front end of the running belt platform is lifted up by a predetermined slope; when the athlete is running on the running belt platform, When the athlete's foot pushes down the running belt, under the impact of the athlete's pedal, the front end of the running belt platform will drive the buffer plate downward together for a certain distance. Under the rebounding action of the return spring and the right return spring, the front end of the running belt platform will rise again to a predetermined slope; at the same time, the rollers at the end of the running belt platform will roll on the ground adaptively;

When the athlete continues to run on the running belt, the buffer plate will periodically move downward and rebound upward periodically;

During the downward displacement of the buffer plate due to the impact of the pedal, the downward displacement of the buffer plate causes the left and right links to drive the left and right sliders to move towards each other synchronously. The movement of approaching each other makes the left push rod and the right push rod drive the left and right disk bodies to move closer to each other, and the mutual close movement between the left and right disk bodies makes the left telescopic cylinder and the right telescopic cylinder both Do the movement of shrinking along the axis direction, so that the volume of the shock-absorbing air chamber is rapidly reduced, so that the gas in the shock-absorbing air chamber is instantly compressed, and the compressed gas in the shock-absorbing air chamber will not pass through the air guide instantaneously. The second one-way valve in the channel enters into the shunt cavity, thereby forming a rebound force for the left and right disks in the shock-absorbing air chamber, which acts as a buffer and restrains the left and right disks from continuing to approach each other. , and then play a buffering effect on the downward movement of the buffer plate. At the same time, when the gas in the shock-absorbing air chamber is compressed, part of the compressed gas will also pass through the second one-way valve in the air guide channel. Enter into the shunt cavity, and then play the role of continuously weakening the rebound force of the shock-absorbing air chamber to the left and right disk bodies, preventing the phenomenon that the rebound force of the shock-absorbing air chamber becomes larger and larger after being compressed, thereby making the The shock absorption and buffering process of the buffer plate is more stable;

When the buffer plate is displaced upward, under the rebound action of the return spring and the right return spring, the left disc body and the right disc body begin to move away from each other, so that both the left telescopic cylinder and the right telescopic cylinder are stretched along the axis direction. At this time, a negative pressure will be formed in the damping air chamber due to the increase in volume, which will weaken the rebound speed of the spring, thereby reducing the upward rebound of the buffer plate due to the return spring and the right return spring. At the same time, under the action of negative pressure, the negative pressure in the damping air chamber causes the external air to enter the damping air chamber through the first one-way valve in the ventilation pipe, so that the damping The air pressure in the shock chamber is maintained to be the same as the atmospheric pressure;

As the runners continue, the left telescopic tube and the right telescopic tube will periodically contract and relax, so that the pressurized air is continuously fed into the shunt cavity, and the pressurized air in the shunt cavity is further fed. It will be continuously shunted to the left air guide channel and the right air guide channel, and finally the left air collecting chamber and the right air collecting chamber will continuously form positive pressure air; The air is ejected through several air outlets, and the airflow ejected from the several air outlets is blown to the runners running on the running belt, and the runners are blown and cooled.

Beneficial effects: the structure of the present invention is simple, and the structure of the shock-absorbing air chamber is adopted to make the buffering process more stable; the rebound process is more gentle; the vibration intensity is reduced;

Description of drawings

Accompanying drawing 1 is the first schematic diagram of the overall structure of the treadmill;

Accompanying drawing 2 is the second schematic diagram of the overall structure of the treadmill;

Accompanying drawing 3 is the longitudinal cut-away structure schematic diagram at the front end of treadmill;

Accompanying drawing 4 is the overall structure schematic diagram of damping mechanism;

Accompanying drawing 5 is the three-dimensional schematic diagram of damping mechanism;

Accompanying drawing 6 is the structural schematic diagram of the right side of the damping mechanism;

Accompanying drawing 7 is the cutaway structure schematic diagram of doing telescopic cylinder and right telescopic cylinder;

FIG. 8 is a schematic diagram of the air outlet at the upper end of the left pole.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

The treadmill used for physical training as shown in Figures 1 to 8 includes a running belt platform 43 whose front end is tilted upward, and a running belt 71 that can be driven by a motor is installed on the running belt platform 43; the running belt platform 43 Rollers 81 are installed on both sides of the bottom of the tail end; the rollers 81 are in rolling fit with the horizontal ground;

The lower side of the front end of the running belt platform 43 is provided with a machine base 22, and the machine base 22 is connected to the front end of the running belt platform 43 by shock absorption through a shock absorption mechanism;

The two ends of the machine base 22 are respectively symmetrically and integrally provided with vertical left vertical rods 37 and right vertical rods 34; ; The direction of the airflow ejected from the air outlet 40 can be blown to the runners running on the running belt 71 .

Armrests 61 are installed on the upper ends of the left vertical rod 37 and the right vertical rod 34 .

The shock absorption mechanism includes a left rail seat 19 and a right rail seat 13 symmetrical on both sides of the upper end of the machine base 22; The guide rail 1 and the right guide rail 30; the left guide rail 1 and the right guide rail 30 are respectively provided with a left guide rail groove 46 and a right guide rail groove 45 along the length direction; Block 2 and right slider 8; the upper sides of the left slider 2 and the right slider 8 are respectively fixed with a lower left hinge seat 20 and a lower right hinge seat 31;

It also includes a left connecting rod 18 and a right connecting rod 32 which are symmetrical to each other and whose lower ends are inclined inward. Hinged seat 31;

It also includes a strip-shaped buffer plate 3 extending in the left-right direction. The upper left hinge seat 15 and the upper right hinge seat 10 are symmetrically installed on both sides of the bottom of the buffer plate 3, and the upper end of the left link 18 is hingedly connected to the upper left hinge. In the hinge seat 15 , the upper end of the right link 32 is hingedly connected to the upper right hinge seat 10 .

The front end of the running belt platform 43 is fixedly connected with a connecting beam 90 extending along the left and right. The connecting beam 90 is hingedly connected with the buffer plate 3 through a number of hinges 44; The component 44 drives the front end of the running belt platform 43 to move up and down accordingly.

A vertical left guide post 17 is fixed on the upper side of the left end of the left rail seat 19 , and a vertical right guide post 12 is fixed on the upper side of the right end of the right rail seat 13 ; A guide hole 60 is arranged symmetrically through the upper and lower sides, and the left guide post 17 and the right guide post 12 are respectively coaxially moved upward through the two guide holes 60; the left guide post 17 and the right guide post 12 are respectively sleeved There are left return spring 16 and right return spring 11, the left return spring 16 is located between the buffer plate 3 and the left rail seat 19; the right return spring 11 is located between the buffer plate 3 and the right rail seat 13 between.

The top ends of the left guide post 17 and the right guide post 12 are respectively fixed with a left top cap 14 and a right top cap 9 .

A fixed cylinder 5 with an axis extending in the left-right direction is arranged above the upper middle of the base 22, and the lower end of the fixed cylinder 5 is integrally and fixedly connected to the base 22 through a vertical support column 27; A left telescopic cylinder 24 is provided coaxially on the left side of the fixed cylinder 5, a right telescopic cylinder 28 is coaxially provided on the right side of the fixed cylinder 5, and the right end of the left telescopic cylinder 24 is connected to the fixed cylinder 24. The left end of the cylinder body 5 is fixedly connected; the left end of the right telescopic cylinder 28 is fixedly connected with the right end of the fixed cylinder body 5; the left end of the left telescopic cylinder 24 is coaxially sealed and fixed with a hard left disk body 4 , the right end of the right telescopic cylinder 28 is coaxially sealed and fixed with a hard right disk body 6;

The inner side of the integrated structure formed by the left telescopic cylinder 24 , the fixed cylinder 5 and the right telescopic cylinder 28 , the left disk body 4 and the right disk body 6 is a shock-absorbing air chamber 47 ;

The right end of the left slider 2 is fixedly connected with a left push rod 21 extending to the right, and the left end of the right slider 8 is fixedly connected with a right push rod 7 extending to the left; the right end of the left push rod 21 passes through the left The connecting member 23 is fixedly connected to the left disk body 4, and the left end of the right push rod 7 is fixedly connected to the right disk body 6 through the right connecting member 29;

The fixed cylinder 5 is also fixedly provided with a ventilation pipe 26 that communicates with the outside world, the inner end of the ventilation pipe 26 is connected to the shock-absorbing air chamber 47, and a first one-way valve is installed in the ventilation pipe 26 , the outside air can enter the shock-absorbing air chamber 47 through the first one-way valve in the ventilation pipe 26;

The base 22 is provided with a shunt cavity 49 inside, and the support column 27 is provided with an air guide channel 50 inside. The air guide channel 50 communicates the shock absorption air chamber cavity 47 and the flow shunt cavity 49 with each other. ; A second one-way valve 48 is provided in the air guide channel 50, and the air in the shock-absorbing air chamber 47 can be introduced into the shunt chamber 49 through the second one-way valve 48 in the air guide channel 50;

The left air guide channel 41 and the right air guide channel 42 are respectively communicated with the two sides of the shunt chamber 49; the left vertical rod 37 and the right vertical rod 34 are respectively provided with a left air guide channel 38 and a right air guide along the length direction. channel 32; the lower ends of the left air guide channel 38 and the right air guide channel 32 are respectively connected to the air outlet ends of the left air guide channel 41 and the right air guide channel 42; the upper ends of the left air guide channel 38 and the right air guide channel 32 The left air collection chamber 39 and the right air collection chamber 33 are respectively communicated with each other, and the air outlet 40 on the left vertical rod 37 and the air outlet 40 on the right vertical rod 34 are respectively connected with the left air collection chamber 39 and the right air collection chamber 33. Connected.

The walls of the left telescopic cylinder 24 and the right telescopic cylinder 28 are made of natural latex, imitation latex, TPE or PVC material with corrugated or zigzag cross-sections, and the left telescopic cylinder 24 and the right telescopic cylinder 28 can expand and contract along the axis direction.

The working method of the treadmill and the shock absorption are as follows:

When there is no athlete on the running belt platform 43, under the elastic return action of the left return spring 16 and the right return spring 11, the front end of the running belt platform 43 is lifted up by a predetermined gradient; when the athlete is on the running belt platform 43 During running, when the athlete's foot pushes down on the running belt 71, under the impact of the athlete's pedal, the front end of the running belt platform 43 will drive the buffer plate 3 to move downward together for a certain distance. When the running belt 71 is separated from the running belt 71, under the rebound action of the left return spring 16 and the right return spring 11, the front end of the running belt platform 43 will be lifted up again by a predetermined gradient; 81 will also roll on the ground adaptively;

When the athlete keeps running on the running belt 71, the buffer plate 3 will periodically move downward and rebound upward periodically;

During the downward displacement of the buffer plate 3 due to the impact of the pedal, the downward displacement of the buffer plate 3 causes the left link 18 and the right link 32 to drive the left slider 2 and the right slider 8 to move towards each other synchronously, and the left The mutual approaching movement of the slider 2 and the right slider 8 makes the left push rod 21 and the right push rod 7 respectively drive the left disk body 4 and the right disk body 6 to move closer to each other, and the space between the left disk body 4 and the right disk body 6 The mutual approaching movement causes the left telescopic cylinder 24 and the right telescopic cylinder 28 to contract in the axial direction, so that the volume of the shock-absorbing air chamber 47 is rapidly reduced, so that the gas in the shock-absorbing air chamber 47 is instantly removed. Compression, the compressed gas in the shock-absorbing air chamber 47 will not enter into the shunt chamber 49 through the second one-way valve 48 in the air guide channel 50 instantaneously, so that the shock-absorbing air chamber 47 forms a pair of left disc body 4 and The rebound force of the right disc body 6 acts as a buffer to restrain the tendency of the left disc body 4 and the right disc body 6 to continue to approach each other, thereby buffering the downward movement of the buffer plate 3. At the same time, the shock absorbing air chamber During the process of compression of the gas in the cavity 47, part of the compressed gas will also enter into the diverter cavity 49 through the second one-way valve 48 in the air guide channel 50, thereby continuously weakening the impact of the shock-absorbing air chamber 47 on the air. The effect of the resilience of the left disc body 4 and the right disc body 6 prevents the phenomenon that the resilience of the shock-absorbing air chamber 47 becomes larger and larger after being compressed, thereby making the damping and buffering process of the buffer plate 3 more stable;

When the buffer plate 3 is displaced upward, under the rebound action of the return spring 16 and the right return spring 11, the left disc body 4 and the right disc body 6 start to move away from each other, so that the left telescopic cylinder 24 and the right telescopic cylinder are moved away from each other. 28 all perform a relaxation movement along the axis direction. At this time, a negative pressure will be formed in the shock-absorbing air chamber 47 due to the increase in volume, which will weaken the rebound speed of the spring, thereby reducing the return of the buffer plate 3. The spring 16 and the right return spring 11 rebound upward and produce the effect of the vibration intensity. At the same time, under the action of negative pressure, the negative pressure in the shock-absorbing air chamber 47 causes the external air to pass through the first air hole in the ventilation pipe 26. A one-way valve enters the shock-absorbing air chamber cavity 47 to maintain the air pressure in the shock-absorbing air chamber chamber 47 to be the same as the atmospheric pressure;

As the running athlete continues, the left telescopic cylinder 24 and the right telescopic cylinder 28 will periodically contract and relax, so that the pressurized air is continuously fed into the shunt chamber 49, and then the shunt chamber 49 is continuously fed with pressurized air. The pressurized air will be continuously shunted to the left air guide channel 41 and the right air guide channel 42, and finally the left air collecting chamber 39 and the right air collecting chamber 33 will continuously form positive pressure air; The pressurized air in the chamber 39 and the right air collecting chamber 33 is ejected through several air outlets 40, and the air flow ejected from the several air outlets 40 blows on the runners running on the running belt 71, blowing the air to the runners. cool down.

The above is only the preferred embodiment of the present invention, it should be pointed out that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can also be made, and these improvements and modifications are also It should be regarded as the protection scope of the present invention.

Claims (9)

1. The treadmill for physical training comprises a running belt platform (43) with the front end upwards tilted, wherein a running belt (71) driven by a motor is arranged on the running belt platform (43); two sides of the bottom of the tail end of the tape running platform (43) are provided with rollers (81); the roller (81) is in rolling fit with the horizontal ground;

the method is characterized in that: a base (22) is arranged on the lower side of the front end of the tape running platform (43), and the base (22) is connected with the front end of the tape running platform (43) in a damping manner through a damping mechanism;

two ends of the machine base (22) are respectively and symmetrically integrated with a vertical left vertical rod (37) and a vertical right vertical rod (34); a plurality of air outlets (40) are respectively arranged at the rear side positions of the upper ends of the left upright rod (37) and the right upright rod (34); the direction of the air current ejected from the air outlet (40) can be blown to the runner running on the running belt (71).

2. The treadmill for physical training of claim 1, wherein: the upper ends of the left vertical rod (37) and the right vertical rod (34) are respectively provided with a handrail (61).

3. The treadmill for physical training of claim 1, wherein: the damping mechanism comprises a left guide rail seat (19) and a right guide rail seat (13) which are symmetrical on two sides of the upper end of the machine base (22); the upper sides of the left guide rail seat (19) and the right guide rail seat (13) are respectively fixedly provided with a left guide rail (1) and a right guide rail (30) which are horizontal and extend along the left-right direction; the left guide rail (1) and the right guide rail (30) are respectively provided with a left guide rail groove (46) and a right guide rail groove (45) along the length direction; a left slide block (2) and a right slide block (8) are respectively arranged in the left guide rail groove (46) and the right guide rail groove (45) in a sliding manner; the upper sides of the left sliding block (2) and the right sliding block (8) are respectively fixedly provided with a left lower hinged seat (20) and a right lower hinged seat (31);

the left connecting rod (18) and the right connecting rod (32) are bilaterally symmetrical, the lower ends of the left connecting rod (18) are inclined inwards, the lower end of the left connecting rod (18) is hinged to the left lower hinged seat (20), and the lower end of the right connecting rod (32) is hinged to the right lower hinged seat (31);

still include banding buffer board (3) that extend along the left and right directions, articulated seat (15) on the left and articulated seat (10) on the right are installed to the bottom both sides of buffer board (3) symmetry respectively, the articulated connection in upper end of left side connecting rod (18) articulated seat (15) on the left, the articulated connection in upper end of right side connecting rod (32) articulated seat (10) on the right.

4. A treadmill for physical training as recited in claim 3, wherein: the front end of the tape running platform (43) is fixedly connected with a connecting beam (90) extending left and right, and the connecting beam (90) is hinged with the buffer plate (3) through a plurality of hinge pieces (44); the vertical displacement of buffer board (3) can drive through a plurality of articulated elements (44) the front end of running band platform (43) is followed vertical displacement.

5. The treadmill for physical training of claim 4, wherein: a vertical left guide post (17) is fixedly arranged on the upper side of the left end of the left guide rail seat (19), and a vertical right guide post (12) is fixedly arranged on the upper side of the right end of the right guide rail seat (13); guide holes (60) which are penetrated up and down are symmetrically formed in two ends of the buffer plate (3), and the left guide pillar (17) and the right guide pillar (12) respectively and axially and upwards movably penetrate through the two guide holes (60); a left return spring (16) and a right return spring (11) are respectively sleeved on the left guide post (17) and the right guide post (12), and the left return spring (16) is positioned between the buffer plate (3) and the left guide rail seat (19); and the right return spring (11) is positioned between the buffer plate (3) and the right guide rail seat (13).

6. The treadmill for physical training of claim 4, wherein: the top ends of the left guide post (17) and the right guide post (12) are respectively and fixedly provided with a left top cap (14) and a right top cap (9).

7. The treadmill for physical training of claim 6, wherein: a fixed cylinder (5) with an axis extending along the left-right direction is arranged above the middle position of the upper side of the machine base (22), and the lower end of the fixed cylinder (5) is integrally and fixedly connected with the machine base (22) through a vertical supporting column (27); a left telescopic cylinder (24) is coaxially arranged on the left side of the fixed cylinder body (5), a right telescopic cylinder (28) is coaxially arranged on the right side of the fixed cylinder body (5), and the right end of the left telescopic cylinder (24) is fixedly communicated with the left end of the fixed cylinder body (5); the left end of the right telescopic cylinder (28) is fixedly communicated with the right end of the fixed cylinder body (5); the left end of the left telescopic cylinder (24) is coaxially and fixedly provided with a hard left disc body (4) in a sealing manner, and the right end of the right telescopic cylinder (28) is coaxially and fixedly provided with a hard right disc body (6) in a sealing manner;

the inner side of an integrated structure formed by the left telescopic cylinder (24), the fixed cylinder body (5), the right telescopic cylinder (28), the left disc body (4) and the right disc body (6) is provided with a damping air chamber cavity (47);

the right end of the left sliding block (2) is fixedly connected with a left push rod (21) extending rightwards, and the left end of the right sliding block (8) is fixedly connected with a right push rod (7) extending leftwards; the right end of the left push rod (21) is fixedly connected with the left disc body (4) through a left connecting piece (23), and the left end of the right push rod (7) is fixedly connected with the right disc body (6) of the right disc body (6) through a right connecting piece (29);

the fixed cylinder (5) is further fixedly provided with a vent pipe (26) communicated with the outside, the inner side end of the vent pipe (26) is communicated with the damping air chamber cavity (47), a first one-way valve is installed in the vent pipe (26), and outside air can enter the damping air chamber cavity (47) through the first one-way valve in the vent pipe (26);

a shunting cavity (49) is formed in the base (22), an air guide channel (50) is formed in the supporting column (27), and the air guide channel (50) enables the damping air chamber cavity (47) and the shunting cavity (49) to be communicated with each other; a second one-way valve (48) is arranged in the air guide channel (50), and air in the damping air chamber cavity (47) can be guided into the shunting cavity (49) through the second one-way valve (48) in the air guide channel (50);

the two sides of the flow dividing cavity (49) are respectively communicated with a left air guide channel (41) and a right air guide channel (42); a left air guide channel (38) and a right air guide channel (32) are respectively arranged in the left upright rod (37) and the right upright rod (34) along the length direction; the lower ends of the left air guide channel (38) and the right air guide channel (32) are respectively communicated with the air outlet ends of the left air guide channel (41) and the right air guide channel (42); the upper ends of the left air guide channel (38) and the right air guide channel (32) are respectively communicated with a left air collection chamber (39) and a right air collection chamber (33), and an air outlet (40) on the left upright rod (37) and an air outlet (40) on the right upright rod (34) are respectively communicated with the left air collection chamber (39) and the right air collection chamber (33).

8. The treadmill for physical training of claim 7, wherein: the cylinder walls of the left telescopic cylinder (24) and the right telescopic cylinder (28) are made of natural latex, imitation latex, TPE or PVC materials with corrugated or sawtooth-shaped cross sections, and the left telescopic cylinder (24) and the right telescopic cylinder (28) can stretch along the axis direction.

9. Use of a treadmill for physical training as claimed in claim 8 wherein:

when no sporter exists on the tape running platform (43), the front end of the tape running platform (43) tilts upwards by a preset gradient under the elastic return action of the left return spring (16) and the right return spring (11); when a sportsman runs on the running belt platform (43), when the sportsman pedals the running belt (71) downwards with feet, under the impact of the foot pedal of the sportsman, the front end of the running belt platform (43) can downwards drive the buffer board (3) to downwards displace for a certain distance, and when the sportsman is separated from the running belt (71), the front end of the running belt platform (43) can upwards tilt up a preset gradient again under the rebounding action of the left return spring (16) and the right return spring (11); meanwhile, the roller (81) at the tail end of the tape running platform (43) can roll on the ground adaptively;

when the sporter continuously runs on the running belt (71), the buffer board (3) can periodically move downwards and rebound upwards;

in the process that the buffer plate (3) is impacted by pedals to move downwards, the left connecting rod (18) and the right connecting rod (32) are driven by the buffer plate (3) to move to synchronously approach the left slider (2) and the right slider (8) in opposite directions through the downward displacement of the buffer plate (3), the left push rod (21) and the right push rod (7) are driven by the left slider (2) and the right slider (8) to move in opposite directions respectively to drive the left disc body (4) and the right disc body (6) to move in opposite directions, the left telescopic cylinder (24) and the right telescopic cylinder (28) are driven by the left disc body (4) and the right disc body (6) to contract in the axial direction through the movement in opposite directions, so that the volume of the damping air chamber (47) is rapidly reduced, the air in the damping air chamber (47) is instantly compressed, the compressed air in the damping air chamber (47) cannot instantly enter the flow dividing chamber (49) through the second one-way valve (48) in the air guide channel (50), therefore, the rebound force of the left disc body (4) and the right disc body (6) is formed in the damping air chamber cavity (47), the trend that the left disc body (4) and the right disc body (6) are continuously close to each other is buffered and restrained, and the buffer effect of the buffer plate (3) moving downwards is further achieved, meanwhile, in the process that the air in the damping air chamber cavity (47) is compressed, part of the compressed air can enter the shunting cavity (49) through a second one-way valve (48) in the air guide channel (50), so that the effect of continuously weakening the rebound force of the damping air chamber cavity (47) on the left disc body (4) and the right disc body (6) is achieved, the phenomenon that the rebound force of the damping air chamber cavity (47) is larger and larger after being compressed is prevented, and the damping and buffering process of the buffer plate (3) is more stable;

when the buffer plate (3) moves upwards, under the rebound action of the return spring (16) and the right return spring (11), the left disc body (4) and the right disc body (6) start to move away from each other, so that the left telescopic cylinder (24) and the right telescopic cylinder (28) both move in a relaxation mode along the axis direction, at the moment, negative pressure is formed in the shock absorption air chamber cavity (47) due to the increase of the volume, the rebound speed of the springs is weakened, the shock intensity of the buffer plate (3) due to the upward rebound of the return spring (16) and the right return spring (11) is relieved, meanwhile, under the negative pressure action in the shock absorption air chamber cavity (47), external air enters the shock absorption air chamber cavity (47) through a first one-way valve in the vent pipe (26), and the air pressure in the shock absorption air chamber cavity (47) is kept to be the same as the large air pressure;

along with the continuous running of the running sporters, the left telescopic cylinder (24) and the right telescopic cylinder (28) can be periodically contracted and expanded, so that the pressurized air is continuously fed into the shunting cavity (49), the pressurized air in the shunting cavity (49) can be continuously shunted to the left air guide channel (41) and the right air guide channel (42), and finally the positive pressure air is continuously formed in the left air collection chamber (39) and the right air collection chamber (33); finally, the pressurized air in the left air collection chamber (39) and the right air collection chamber (33) is sprayed out through the air outlets (40), and the airflow sprayed out from the air outlets (40) is blown to the runner running on the running belt (71) to blow air and cool the runner.

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