CN115645816A - Horizontal bar weight reduction training device and operation method - Google Patents

Abstract

A horizontal bar weight reduction training device and an operation method thereof comprise a horizontal bar seat, a power device and a power assisting device, wherein the power device comprises a power seat, a rotary table and a sliding block, the power assisting device comprises a power assisting seat, a power shaft, a transmission sleeve, an output shaft, a spline shaft, a turbine and a rotating bearing seat, four symmetrical pillars are arranged on the upper portion of the horizontal bar seat, a horizontal bar is arranged in the middle of the upper portion of the horizontal bar seat, a hanging rod is arranged on the upper portion of the horizontal bar seat, a wheel is rotatably connected with the middle position of the hanging rod, the wheel I rotates around the hanging rod, a pedal is fixedly connected with the upper portions of the four pillars, a waistband is fixedly connected with the lower portion of a hanging strip, and the hanging strip bypasses the wheel I.

Description

Horizontal bar weight reduction training device and operation method

Technical Field

The invention relates to the field of horizontal bar weight reduction training, in particular to a horizontal bar weight reduction training device and an operation method.

Background

In the horizontal bar exercise process, some person who just begins to exercise and physical power are relatively poor, hardly accomplish pull-up's action or can only accomplish a small amount of pull-up actions, are difficult to reach the effect of training, need a device to solve above problem.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a horizontal bar weight reduction training device and an operation method, wherein the horizontal bar weight reduction training device can help an exerciser to finish pull-up action, and the exercise intensity and the intensity are adjustable.

The purpose of the invention is realized by the following technical scheme:

the utility model provides a horizontal bar subtracts heavy trainer, includes horizontal bar seat, power device, booster unit, and power device includes power seat, carousel, slider, and booster unit includes helping hand seat, power shaft, driving sleeve, output shaft, integral key shaft, turbine, rotating bearing seat, horizontal bar seat upper portion has four pillars of symmetry, has the horizontal bar in the middle of the horizontal bar seat upper portion, and horizontal bar upper portion has the jib, and a wheel rotates and connects jib intermediate position, and a wheel rotates around the jib, four pillar upper portions of footboard fixed connection, waistband fixed connection suspender lower part, and the wheel has been walked around to the suspender.

The middle of the power seat is provided with a chute, the rear part of the right side of the power seat is provided with a second bearing seat, the rear side of the second bearing seat is provided with a motor plate, the front side of the chute is provided with a first bearing seat, the left side of the first bearing seat is provided with a gear shaft hole, the middle of the rotary disk is provided with a rotary disk shaft, the side surface of the rotary disk is provided with an eccentric shaft, the side surface of the upper part of the sliding block is provided with a rack, the right side of the upper part of the sliding block is provided with a sliding block pin, the sliding block is connected with the chute in a sliding way, the rotary disk shaft penetrates through the second bearing seat and is connected with the second bearing seat in a rotating way, the motor is fixedly connected with the upper part of the motor plate, the output shaft of the motor is fixedly connected with the rotary disk shaft, one side of a connecting rod is hinged with the sliding block pin, the other side of the connecting rod is hinged with the eccentric shaft, the intermediate gear shaft is connected with the gear shaft hole, the gear rotates in the gear shaft, the gear and is meshed with the gear and is fixedly connected with the first bevel gear, the gear and the second bevel gear, the intermediate shaft, the gear is connected with the gear, the gear and is connected with the first bevel gear, the second bevel gear, the lower part of the power seat, the power seat is fixedly connected with a single lever.

The power-assisted seat is characterized in that two power-assisted seat holes are symmetrically formed in two sides of the power-assisted seat, a power-assisted seat groove is formed in the rear side of the power-assisted seat, two slotted holes are symmetrically formed in two sides of the power-assisted seat groove, a turbine bearing seat is arranged on the left side of the power-assisted seat groove, a threaded rod is arranged in the middle of the power shaft, a power shaft hole is formed in the right side of the power shaft, a threaded hole is formed in the middle of the splined shaft, a splined hole is formed in the middle of the turbine, a turbine shaft is arranged on the side face of the turbine, two rotating bearing seat pins are symmetrically formed in the lower portion of the rotating bearing seat, the rotating bearing seat is clamped in the power-assisted seat groove, the two rotating bearing seat pins are rotatably connected with the two slotted holes in two sides, the rotating bearing seat pins are rotatably connected with the two rotating bearing seats, the splined shaft slides along the splined hole, the power shaft penetrates through the threaded hole and the left power-assisted seat hole from the inner side, the threaded hole is in threaded connection with the power shaft, the power shaft is rotatably connected with the power shaft hole, the power shaft rotates in the power shaft in the power-assisted seat hole, a second synchronizing wheel is fixedly connected with the front side, and the power shaft, and the first synchronizing wheel is fixedly connected with the first pin in the power shaft.

Has the advantages that:

the belt type pull-up exercise device helps an exerciser to finish pull-up action, the power device converts the back-and-forth movement action into the back-and-forth rotation action of the gear, the gear drives the belt to move up and down through the power assisting device, and the purpose that the exerciser can control the strength of the belt to move up and down when the exerciser pulls the belt is up is achieved.

Drawings

FIG. 1 is a schematic structural diagram of a horizontal bar weight-loss training device according to the present invention.

Fig. 2 is a schematic diagram of the internal structure of the horizontal bar weight-reducing training device.

FIG. 3 is a schematic view of a horizontal bar seat structure according to the present invention.

Fig. 4 is a schematic structural diagram of the power device of the invention.

Fig. 5 is a schematic view of the power seat structure according to the present invention.

Fig. 6 is a schematic view of the turntable structure according to the present invention.

Fig. 7 is a schematic view of a slider structure according to the present invention.

FIG. 8 is a schematic view of a power assisting device according to the present invention.

FIG. 9 is a rear side view of the booster of the present invention.

Fig. 10 is a schematic structural view of the booster seat according to the present invention.

Fig. 11 is a schematic structural view of a power shaft according to the present invention.

Fig. 12 is a schematic view of a structure of a transmission sleeve according to the present invention.

Fig. 13 is a schematic view of the output shaft structure according to the present invention.

FIG. 14 is a schematic view of the spline shaft structure according to the present invention.

Fig. 15 is a schematic view of the turbine structure according to the present invention.

Fig. 16 is a schematic structural view of a rotary bearing seat according to the present invention.

Detailed Description

The invention is explained in more detail below with reference to the figures and examples:

a horizontal bar weight-losing training device comprises a horizontal bar seat 110, a power device 200 and a power assisting device 300, wherein the power device 200 comprises a power seat 210, a rotating disc 220 and a sliding block 230, the power assisting device 300 comprises a power assisting seat 310, a power shaft 320, a transmission sleeve 330, an output shaft 340, a spline shaft 350, a turbine 360 and a rotating bearing seat 370, four symmetrical support columns 111 are arranged on the upper portion of the horizontal bar seat 110, a horizontal bar 112 is arranged in the middle of the upper portion of the horizontal bar seat 110, a hanging rod 113 is arranged on the upper portion of the horizontal bar 112, a first wheel 140 is rotatably connected with the middle position of the hanging rod 113, a first wheel 140 rotates around the hanging rod 113, a pedal 150 is fixedly connected with the upper portions of the four support columns 111, a waist belt 120 is fixedly connected with the lower portion of a hanging strip 130, and the hanging strip 130 winds around the first wheel 140. When the invention is used, an exerciser stands on the upper part of the pedal, the waistband is fixed on the waist of the exerciser, when the exerciser starts exercising, the motor is started, the motor rotates to drive the rotating disc to rotate, the rotating disc rotates to drive the sliding block to slide towards the left side through the connecting rod, the sliding block moves towards the left side to drive the gear to rotate, the gear rotates to drive the first bevel gear to rotate, the first bevel gear rotates to drive the second bevel gear to rotate, the second bevel gear rotates to drive the first synchronizing wheel to rotate, the first synchronizing wheel rotates to drive the second synchronizing wheel to rotate through the synchronous belt, the second synchronizing wheel rotates to drive the power shaft to rotate, the power shaft rotates to drive the output shaft to rotate through the transmission sleeve, the output shaft rotates to drive the second synchronizing wheel to rotate, the second wheel rotating sling is rolled up, the sling pulls the exerciser through the waistband, the exerciser can hold the horizontal bar to start to pull the body upwards, when the tension of the sling exceeds a certain limit, the second pin can push the transmission sleeve to overcome the elasticity of the spring to slide towards the left side, the transmission sleeve and the output shaft start to slip, the pulling force of the sling is kept in a certain range, when the slider moves to the leftmost side, the slider starts to move towards the right side under the action of the turntable, the gear starts to reverse at the moment, the sling is loosened by the second wheel, the exerciser starts to move downwards along the situation, the exercise intensity and the intensity can be adjusted, when the exercise intensity is adjusted, the worm is pulled upwards, the worm drives the rotating bearing seat to rotate around the power assisting seat at the moment, the worm is meshed with the worm, the worm rotates to drive the turbine to rotate, the turbine rotates to drive the spline shaft to rotate, the spline shaft rotates while moving under the action of the threaded rod, when the spline shaft moves towards the right side, the spring is compressed, when the spline shaft moves towards the left side, the spring extends, when the spring is compressed, the pressure between the transmission sleeve and the output shaft is increased, the moment of torsion increase of transmission cover transmission, otherwise the moment of torsion of transmission cover transmission reduces, when intensity is tempered in the adjustment, can realize through the rotational speed of adjustment motor, and the integral key shaft rotational speed improves, and the waistband makes a round trip to stimulate the frequency increase of exerciser, and the exerciser need adapt to passively, the intensity that the increment was tempered.

The middle of the power base 210 is provided with a sliding groove 211, the rear part of the right side of the power base 210 is provided with a second bearing seat 214, the rear side of the second bearing seat 214 is provided with a motor plate 215, the front side of the sliding groove 211 is provided with a first bearing seat 212, the left side of the first bearing seat 212 is provided with a gear shaft hole 213, the middle of the rotating disc 220 is provided with a rotating disc shaft 221, the side surface of the rotating disc 220 is provided with an eccentric shaft 222, the side surface of the upper part of the sliding block 230 is provided with a rack 231, the right side of the upper part of the sliding block 230 is provided with a sliding block pin 232, the sliding block 230 is connected with the sliding groove 211 in a sliding way, the rotating disc shaft 221 penetrates through the second bearing seat 214, the rotating disc shaft 221 is connected with the second bearing seat 214 in a rotating way, the rotating disc 220 rotates in the second bearing seat 214, the motor 250 is fixedly connected with the upper part of the motor plate 215, an output shaft of the motor 250 is fixedly connected with a turntable shaft 221, one side of the connecting rod 240 is hinged with a slider pin 232, the other side of the connecting rod 240 is hinged with an eccentric shaft 222, a middle shaft of the gear 260 is rotatably connected with a gear shaft hole 213, the gear 260 rotates in the gear shaft hole 213, the gear 260 is meshed with the rack 231, the middle shaft of the gear 260 is fixedly connected with a first bevel gear 270, a middle shaft of the second bevel gear 280 penetrates through the first bearing seat 212, a middle shaft of the second bevel gear 280 is rotatably connected with the first bearing seat 212, the second bevel gear 280 rotates in the first bearing seat 212, the first bevel gear 270 is meshed with the second bevel gear 280, the middle shaft of the second bevel gear 280 is fixedly connected with a first synchronizing wheel 290, and the lower part of the power seat 210 is fixedly connected with the upper part of the horizontal bar seat 110.

The two sides of the power-assisted seat 310 are provided with two symmetrical power-assisted seat holes 311, the rear side of the power-assisted seat 310 is provided with a power-assisted seat groove 312, the two sides of the power-assisted seat groove 312 are provided with two symmetrical slotted holes 313, the left side of the power-assisted seat groove 312 is provided with a turbine bearing seat 314, the middle of the power shaft 320 is provided with a threaded rod 321, the right side of the power shaft 320 is provided with a power shaft hole 322, the middle of the splined shaft 350 is provided with a threaded hole 351, the middle of the turbine 360 is provided with a splined hole 361, the side of the turbine 360 is provided with a turbine shaft 362, the lower part of the rotating bearing seat 370 is provided with two symmetrical rotating bearing seat pins 371, the rotating bearing seat 370 is clamped in the power-assisted seat groove 312, the two rotating bearing seat pins 371 are rotatably connected with the two side slotted holes 313, the rotating bearing seat 370 rotates around the two side slotted holes 313, the rear side of the worm 420 is rotatably connected with the rotating bearing seat 370, the turbine shaft 362 rotatably, the turbine shaft 360 rotates in the rotating bearing seat 370, the turbine shaft 360 is rotatably connected with the turbine shaft bearing seat 314, the turbine shaft 360 and the worm 420, the splined shaft 350 is slidably connected with the splined hole 361, the splined hole 320, the power shaft 320 penetrates through the power shaft hole 351 from the inner side of the power shaft hole 311, the power shaft 320, the threaded hole 311, the threaded rod 320, the power shaft 320 is connected with the power-assisted seat hole 311, the threaded rod 320, the power shaft hole 380 rotatably connected with the power shaft hole 320, the power shaft hole 380, the power shaft hole 410, the power shaft 320, the power shaft hole 410, and the power shaft 320.

The left side of the transmission sleeve 330 is provided with a middle groove 331, the right side of the transmission sleeve 330 is provided with a transmission groove 332, one side of the output shaft 340 is provided with an output shaft hole 341, the output shaft 340 penetrates through the right power-assisted seat hole 311 from the right side, the output shaft 340 is rotatably connected with the right power-assisted seat hole 311, the right side of the output shaft 340 is fixedly connected with a second wheel 430, a spring 450 is sleeved on the right side of the power shaft 320, the inside of the output shaft hole 341 is fixedly connected with a second pin 390, the right side of the power shaft 320 is inserted into the left side of the transmission sleeve 330, the first pin 380 is clamped in the middle groove 331, the left side of the spring 450 is abutted against the right side of the spline shaft 350, the right side of the spring 450 is abutted against the left side of the transmission sleeve 330, the second pin 390 is clamped in the transmission groove 332, the lower part of the power-assisted seat 310 is fixedly connected with the upper part of the horizontal bar seat 110, the second synchronous wheel 410 and the first synchronous wheel 290 are rotatably connected through a synchronous belt 440, and the lower part of the sling 130 is wound on the excircle of the second wheel 430.

When the invention is used, an exerciser stands on the upper part of the pedal 150, the waist belt 120 is fixed on the waist of the exerciser, when the exerciser starts exercising, the motor 250 is started, the motor 250 rotates to drive the rotating disc 220 to rotate, the rotating disc 220 rotates to drive the sliding block 230 to slide towards the left through the connecting rod 240, the sliding block 230 moves towards the left to drive the gear 260 to rotate, the gear 260 rotates to drive the first bevel gear 270 to rotate, the first bevel gear 270 rotates to drive the second bevel gear 280 to rotate, the second bevel gear 280 rotates to drive the first synchronizing wheel 290 to rotate, the first synchronizing wheel 290 rotates to drive the second synchronizing wheel 410 to rotate through the synchronous belt 440, the second synchronizing wheel 410 rotates to drive the power shaft 320 to rotate, the power shaft 320 rotates to drive the output shaft 340 to rotate through the transmission sleeve 330, the output shaft 340 rotates to drive the second wheel 430 to rotate, the second wheel 430 rotates and the sling 130 is rolled up, the sling 130 pulls the exerciser through the waist belt 120, an exerciser can grasp the horizontal bar 112 to start pull-up, when the pulling force of the hanging strip 130 exceeds a certain limit, the second pin 390 can push the transmission sleeve 330 to slide to the left side against the elastic force of the spring 450, the transmission sleeve 330 and the output shaft 340 start to slip, so that the pulling force of the hanging strip 130 is maintained in a certain range, when the slider 230 moves to the leftmost side, the slider 230 starts to move to the right side under the action of the turntable 220, the gear 260 starts to rotate reversely, the hanging strip 130 is loosened from the second wheel 430, the exerciser starts to move downwards along the trend at the moment, the exercise intensity and intensity can be adjusted, when the exercise intensity is adjusted, the worm 420 is pulled upwards, the worm 420 drives the rotation bearing seat 370 to rotate around the power assisting seat 310, the worm 420 and the worm wheel 360 are meshed to rotate, the worm 420 rotates to drive the worm wheel 360 to rotate, the worm wheel 360 rotates to drive the spline shaft 350 to rotate, the spline shaft 350 moves under the action of the threaded rod 321 while rotating, when the spline shaft 350 moves to the right side, the spring 450 is compressed, when the spline shaft 350 moves to the left side, the spring 450 extends, when the spring 450 is compressed, the pressure between the transmission sleeve 330 and the output shaft 340 is increased, the torque transmitted by the transmission sleeve 330 is increased, otherwise, the torque transmitted by the transmission sleeve 330 is reduced, when the exercise intensity is adjusted, the exercise intensity can be adjusted by adjusting the rotating speed of the motor 250, the rotating speed of the spline shaft 350 is increased, the frequency of the exerciser pulled back and forth by the waistband 120 is increased, and the exerciser needs to passively adapt to the exercise intensity and increase the exercise intensity.

The invention helps an exerciser to finish pull-up action, the exercise intensity and intensity are adjustable, the exerciser and the person with poor physical strength are helped to finish pull-up action, the power device 200 converts the back-and-forth movement into back-and-forth movement of the gear 260, the gear 260 drives the belt 120 to move up and down through the power assisting device 300, when the exerciser pulls up, the exerciser is pulled up to help the exerciser finish the pull-up action, the power assisting device 300 not only transmits torque but also controls the torque within a certain range, the magnitude of the output torque of the power assisting device 300 is controlled by adjusting the elasticity of the spring 450, so that the invention is suitable for the requirements of different exercisers, the exerciser is prevented from being injured, the use is safe, the worm 420 is rotatably connected with the rotating bearing seat 370, the rotating bearing seat 370 is rotatably connected with the power assisting seat 310, when the power assisting device 300 normally rotates, the worm 420 is separated from the turbine 360, when adjusting, the worm 420 is lifted, the worm 420 is meshed with the turbine spline shaft 360, the turbine 360 drives the turbine 350 to rotate, the turbine 360 is slidably connected with the power shaft 320, the worm 420 is adjusted, the rotating frequency of the belt 120 can be adjusted along the axial direction of the exerciser, and the belt 120 can be adjusted, thereby the belt 250 can be suitable for the exerciser.

An operation method of a horizontal bar weight loss training device comprises the following steps:

firstly, when the invention is used, an exerciser stands on the upper part of the pedal 150, the waistband 120 is fixed on the waist of the exerciser, when the exerciser starts to exercise, the motor 250 is started, the waistband 120 drives the exerciser to move up and down, the exerciser passively moves up and down along with the waistband 120, and the exerciser completes pull-up action with the help of the waistband 120.

Secondly, when the exercise intensity is adjusted, the worm 420 is pulled upwards, at the moment, the worm 420 drives the rotating bearing seat 370 to rotate around the power assisting seat 310, the worm 420 is meshed with the worm wheel 360, the worm 420 is rotated, when the spring 450 is compressed, the pressure between the transmission sleeve 330 and the output shaft 340 is increased, the torque transmitted by the transmission sleeve 330 is increased, and otherwise, the torque transmitted by the transmission sleeve 330 is reduced.

And thirdly, when the exercise intensity is adjusted, the rotation speed of the motor 250 can be adjusted, the rotation speed of the spline shaft 350 is increased, the frequency of pulling the exerciser back and forth by the waistband 120 is increased, the exerciser needs to passively adapt, and the exercise intensity is increased.

Claims (5)

1. A horizontal bar weight reduction training device is characterized by comprising a horizontal bar seat, a power device and a power assisting device, wherein the power device comprises a power seat, a rotary table and a sliding block, the power assisting device comprises a power assisting seat, a power shaft, a transmission sleeve, an output shaft, a spline shaft, a turbine and a rotating bearing seat, four symmetrical support columns are arranged at the upper part of the horizontal bar seat, a horizontal bar is arranged in the middle of the upper part of the horizontal bar seat, a hanging rod is arranged at the upper part of the horizontal bar, a wheel I rotates around the hanging rod, a pedal is fixedly connected with the upper parts of the four support columns, a waistband is fixedly connected with the lower part of the hanging strip, and the hanging strip passes around the wheel I; the middle of the power seat is provided with a sliding groove, the rear portion of the right side of the power seat is provided with a second bearing seat, the rear side of the second bearing seat is provided with a motor plate, the front side of the sliding groove is provided with a first bearing seat, the left side of the first bearing seat is provided with a gear shaft hole, the middle of the rotary plate is provided with a rotary plate shaft, the side surface of the rotary plate is provided with an eccentric shaft, the side surface of the upper part of the sliding block is provided with a rack, the right side of the upper part of the sliding block is provided with a sliding block pin, the sliding block is connected with the sliding groove in a sliding mode, the sliding block slides in the sliding groove, the rotary plate shaft penetrates through the second bearing seat, the rotary plate rotates in the second bearing seat, the motor is fixedly connected with the upper portion of the motor plate, the motor output shaft is fixedly connected with the rotary plate shaft, one side of the connecting rod is hinged with the sliding block pin, the other side of the connecting rod is hinged with the eccentric shaft, the gear intermediate shaft is rotatably connected with the gear shaft hole, the gear rotates in the gear shaft, the gear shaft is meshed with the gear and the rack, the intermediate shaft is fixedly connected with a first bevel gear, the second bevel gear, the intermediate shaft is fixedly connected with a first synchronous wheel, the second bevel gear, the lower portion of the power seat.

2. The horizontal bar weight-reducing training device as claimed in claim 1, wherein the two sides of the power-assisted seat are symmetrically provided with two power-assisted seat holes, the rear side of the power-assisted seat is provided with a power-assisted seat groove, the two sides of the power-assisted seat groove are symmetrically provided with two slotted holes, the left side of the power-assisted seat groove is provided with a turbine bearing seat, the middle of the power shaft is provided with a threaded rod, the right side of the power shaft is provided with a power shaft hole, the middle of the splined shaft is provided with a threaded hole, the middle of the turbine is provided with a splined hole, the side surface of the turbine is provided with a turbine shaft, the lower part of the rotating bearing seat is provided with two rotating bearing seat pins, the rotating bearing seats are clamped in the power-assisted seat groove, the two rotating bearing seat pins are rotatably connected with the two slotted holes, and the rotating bearing seats rotate around the two slotted holes.

3. The horizontal bar weight-reduction training device as claimed in claim 2, wherein a rear side of the worm is rotatably connected with a rotary bearing seat, the worm rotates in the rotary bearing seat, the turbine shaft is rotatably connected with a turbine bearing seat, the turbine rotates in the turbine bearing seat, the turbine and the worm are meshed with each other, the spline shaft is slidably connected with a spline hole, the spline shaft slides along the spline hole, the power shaft penetrates through the threaded hole and the left power-assisting seat hole from the inner side, the threaded hole is in threaded connection with the threaded rod, the power shaft is rotatably connected with the power-assisting seat hole, the power shaft rotates in the power-assisting seat hole, the front side of the power shaft is fixedly connected with the second synchronizing wheel, and the first pin is fixedly connected inside the power shaft hole.

4. The horizontal bar weight-reduction training device as claimed in claim 3, wherein the left side of the transmission sleeve is provided with a middle groove, the right side of the transmission sleeve is provided with a transmission groove, one side of the output shaft is provided with an output shaft hole, the output shaft penetrates through the right power-assisted seat hole from the right side, the output shaft is rotatably connected with the right power-assisted seat hole, the right side of the output shaft is fixedly connected with a second wheel, the spring is sleeved on the right side of the power shaft, a second pin is fixedly connected inside the output shaft hole, the right side of the power shaft is inserted into the left side of the transmission sleeve, the first pin is clamped in the middle groove, the left side of the spring is abutted against the right side of the spline shaft, the right side of the spring is abutted against the left side of the transmission sleeve, the left side of the output shaft is inserted into the right side of the transmission sleeve, the second pin is clamped in the transmission groove, the lower part of the power-assisted seat is fixedly connected with the upper part of the horizontal bar seat, the second synchronizing wheel and the first synchronizing wheel are rotatably connected through a synchronous belt, and the lower part of the outer circle of the second wheel.

5. The method of claim 2, comprising the steps of: when the horizontal bar weight reduction training device is used, an exerciser stands on the upper portion of a pedal, a waistband is fixed to the waist of the exerciser, when the exerciser starts to exercise, a motor is started, the waistband drives the exerciser to move up and down, the exerciser passively moves up and down along with the waistband, and the exerciser finishes pull-up action with the help of the waistband; when the exercise intensity is adjusted, the worm is pulled upwards, the worm drives the rotating bearing seat to rotate around the power assisting seat, the worm is meshed with the worm wheel, when the spring is compressed, the pressure between the transmission sleeve and the output shaft is increased, the torque transmitted by the transmission sleeve is increased, and otherwise, the torque transmitted by the transmission sleeve is reduced; and thirdly, when the exercise intensity is adjusted, the rotation speed of the motor can be adjusted, the rotation speed of the spline shaft is increased, the frequency of the belt for pulling the exerciser back and forth is increased, the exerciser needs to adapt passively, and the exercise intensity is increased.

Images