CN213912130U

CN213912130U - Rope-driven exercise training equipment

Info

Publication number: CN213912130U
Application number: CN202021905560.9U
Authority: CN
Inventors: 黄青松; 翁贤杰
Original assignee: NINGBO EST TECHNOLOGY CO LTD
Current assignee: NINGBO EST TECHNOLOGY CO LTD
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-08-10
Anticipated expiration: 2030-09-03

Abstract

The utility model discloses a rope-driven exercise training equipment, including the main part subassembly, a pedestal, the left side arm, the right side arm, the assembly pulley, the stay cord, power source subassembly, input module and controller, the power source subassembly includes the servo motor driver, servo motor and bobbin, servo motor driver and servo motor are connected, wire rope twines on the bobbin, wire rope's one end is fixed to be set up, wire rope's the other end is connected with the running block, input module includes input panel and cell-phone APP, cell-phone APP passes through the bluetooth and is connected with the controller, the controller is connected with the servo motor driver, seven kinds of motion modes are stored in the controller, the torque control signal of servo motor under each kind of motion mode and the reference rotational speed scope of servo motor under each kind of motion mode; the advantage is the training scheme that can realize individuation, diversification and digitization, and its power supply subassembly does not have the striking noise, also does not have motion inertia, greatly reduced the risk of pulling in the training process.

Description

Rope-driven exercise training equipment

Technical Field

The utility model relates to a sports training equipment especially relates to a rope moves sports training equipment.

Background

Today, the variety of sports fitness equipment is wide, and the rope-driven sports training equipment is more and more popular among people due to the unique advantages. Traditional rope moves motion training equipment includes main part subassembly usually, a pedestal, the left side arm, the right side arm, the assembly pulley, stay cord and power source subassembly, main part unit mount is on the base, left side arm and right side arm bilateral symmetry install both sides about main part subassembly, the assembly pulley sets up inside main part subassembly, the stay cord is drawn forth from the tip of left side arm and is walked around the assembly pulley and reachd right side arm and fix the tip at right side arm after, the stay cord encircles on the assembly pulley, the assembly pulley includes standing block and running block, the running block passes through wire rope with power source subassembly and is connected. The power source assembly provides resistance when pulling the pull cords of the left and right arms. However, the power source assembly of the traditional rope-driven exercise training equipment is generally realized by adopting a metal dumbbell sheet, the metal dumbbell sheet is simple in structure and convenient to process, but has impact noise, the exercise inertia of the metal dumbbell sheet can cause strain of people under certain conditions, the metal dumbbell sheet can only utilize gravity to manufacture training resistance, the mode of resistance output cannot be changed according to the requirements of trainees, and the personalized, diversified and digital training scheme is difficult to realize.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a rope moves motion training equipment is provided, this rope moves motion training equipment can realize individualized, diversified and digital training scheme, and its power supply subassembly does not have the striking noise, does not have motion inertia yet, greatly reduced the risk of pulling in the training process.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a rope-driven exercise training device comprises a main body component, a base, a left side arm, a right side arm, a pulley block, a pull rope and a power source component, wherein the main body component is installed on the base, the left side arm and the right side arm are installed on the left side wall and the right side wall of the main body component in an bilateral symmetry mode, the pulley block is installed inside the main body component, the pull rope is led out from the end portion of the right side arm, penetrates through the right side arm, enters the main body component, surrounds the pulley block, reaches the left side arm and is finally fixed to the end portion of the left side arm, the pulley block comprises a fixed pulley block and a movable pulley block, the movable pulley block is connected with the power source component through a steel wire rope, and the power source component comprises a servo motor driver, a servo motor and a winding drum, the servo motor driver with the servo motor connect, wire rope twine on the bobbin, wire rope's one end fixed set up, wire rope's the other end be the power take off end of power supply subassembly, with the running block group connect, rope move the motion training equipment still include input module and controller, input module include input panel and be arranged in the cell-phone APP of smart mobile phone, input panel install in the main part subassembly on, input panel with the controller be connected, cell-phone APP pass through the bluetooth and be connected with the controller, the controller with the servo motor driver connect, the controller in store seven kinds of motion modes, servo motor's torque control signal and under each kind of motion mode servo motor's reference rotational speed scope, the seven motion modes are respectively a constant-force isotonic motion mode, a centrifugal isotonic motion mode, a centripetal isokinetic motion mode, a non-inertial motion mode, a fluid resistance motion mode and an elastic force motion mode, a trainer can select the motion mode through the input module or the mobile phone APP, when the rope-driven motion training equipment is started, the servo motor is reset, the servo motor is at a mechanical zero position at the moment, the rotating speed of the servo motor is zero, the trainer can select the motion mode through the input module or the mobile phone APP, the controller inputs a corresponding torque control signal into the servo motor driver according to the motion mode selected by the trainer, the servo motor driver controls the servo motor to output corresponding set output torque according to the received torque control signal, the trainer pulls the pull rope to start training, in the training process of the trainer, the trainer applies external torque load to the servo motor through the pulley block and the steel wire rope, the servo motor driver compares the external load torque with the current set output torque of the servo motor and changes the motion state (namely the output torque) of the servo motor according to the comparison result, an encoder in the servo motor feeds back a position signal to the servo motor driver in real time, the servo motor driver calculates the position signal to obtain the real-time rotating speed of the servo motor and sends the real-time rotating speed to the controller, the controller compares the received real-time rotating speed of the servo motor with the reference rotating speed range of the servo motor stored in the controller under the current motion mode and outputs a rotating speed control signal to the servo motor driver according to the comparison result, and the servo motor driver adjusts the rotating speed of the servo motor according to the rotating speed control signal, so that the rotating speed of the servo motor is in the reference rotating speed range of the servo motor in the current motion mode.

The left arm and the right arm are arranged on the main body component through arm adjusting structures, each arm adjusting structure comprises a left adjusting mechanism for adjusting the left arm and a right adjusting mechanism for adjusting the right arm, and the left adjusting mechanism and the right adjusting mechanism are bilaterally symmetrical structures; the left adjusting mechanism comprises an upper adjusting seat, a lower adjusting seat, a first side plate, a second side plate, an indexing plate, a connecting block, a first locking pin, a second locking pin, a first pulley, a second pulley and a third pulley, the upper adjusting seat and the lower adjusting seat are arranged on the left side wall of the main body component of the training device for the rope-driven exercise at an upper-lower interval, the first side plate is positioned between the upper adjusting seat and the lower adjusting seat, the first side plate is respectively connected with the upper adjusting seat and the lower adjusting seat in a shaft mode, the second side plate is positioned at the rear side of the first side plate and fixed on the first side plate, the connecting block extends between the first side plate and the second side plate, the connecting block is arranged on the first side plate and the second side plate through a first rotating shaft, and the indexing plate is positioned between the connecting block and the second side plate, the dividing plate is arranged on the second side plate, N first slotted holes distributed along an arc are arranged on the dividing plate, N second slotted holes distributed along the arc are arranged on the second side plate, the N first slotted holes correspond to the N second slotted holes one to one, the corresponding first slotted hole and one second slotted hole are coaxial, N is an integer larger than or equal to 2, M third slotted holes distributed along the arc are arranged at the bottom of the first side plate, M is an integer larger than or equal to 2, an arc-shaped groove is arranged on the first side plate, a first mounting hole penetrating through the connecting block from front to back is arranged on the connecting block, the first locking pin enters the first mounting hole from the arc-shaped groove, a first spring used for pushing out the first locking pin and then inserting the first locking pin into the first slotted hole and the second slotted hole opposite to the first locking pin is fixed is arranged at the first mounting hole, lower adjustment seat on be provided with the second mounting hole that runs through from top to bottom, second stop pin install second mounting hole department, second mounting hole department be provided with be used for with second stop pin release back make second stop pin insert rather than just to the third slotted hole in fixed second spring, first pulley install last adjustment seat top, the second pulley be located first curb plate with the second curb plate between, the second pulley install through the second pivot first curb plate with the second curb plate on, the connecting block on be provided with the mounting groove, the third pulley be located the mounting groove in and coaxial arrangement first pivot on, the stay cord follow the tip of right side arm draw forth the back and pass right side arm after in proper order via connecting block in the right side adjustment mechanism, The third pulley, the second pulley and the first pulley enter the main body assembly, encircle the pulley block and then penetrate out of the main body assembly to reach the left adjusting mechanism, and then enter the left side arm through the first pulley, the second pulley, the third pulley and the connecting block in the left adjusting mechanism in sequence and finally are fixed at the end part of the left side arm. In this structure, be used for adjusting the left adjustment mechanism of left side arm and the right adjustment mechanism who is used for adjusting the right side arm through the setting and carry out the regulation of left side arm and right side arm in horizontal direction and vertical direction respectively, the mode of regulation is abundant, can satisfy the diversified body-building demand of different crowds.

Last adjustment seat include regulating plate and first hollow flange axle, last regulating plate fix on the main part subassembly of the training equipment of restricting the motion, first hollow flange axle install last regulating plate on, lower adjustment seat include regulating plate and second hollow flange axle down, lower regulating plate fix on the main part subassembly of the training equipment of restricting the motion, second hollow flange axle install lower regulating plate on, first curb plate install first hollow flange axle with second hollow flange epaxial, the stay cord via first pulley after follow first hollow flange axle department wear out the back and get into the second pulley.

Compared with the prior art, the utility model has the advantages that the power source component is constructed by the servo motor driver, the servo motor and the bobbin, the servo motor driver is connected with the servo motor, the steel wire rope is wound on the bobbin, one end of the steel wire rope is fixedly arranged, the other end of the steel wire rope is the power output end of the power source component and is connected with the movable pulley block, the rope-driven exercise training equipment also comprises an input module and a controller, the input module comprises an input panel and a mobile phone APP for being installed in the smart phone, the input panel is installed on the main body component and is connected with the controller, the mobile phone APP is connected with the controller through Bluetooth, the controller is connected with the servo motor driver, seven exercise modes are stored in the controller, the torque control signal of the servo motor in each exercise mode and the reference rotating speed range of the servo motor in each exercise mode, the seven motion modes are respectively a constant-force isotonic motion mode, a centrifugal isotonic motion mode, a centripetal isotonic motion mode, a inertial-free motion mode, a fluid resistance motion mode and an elastic force motion mode, a trainer can select the motion mode through an input module or a mobile phone APP, when a rope-driven motion training device is started, a servo motor is reset, the servo motor is positioned at a mechanical zero position at the moment, the rotating speed of the servo motor is zero, the trainer selects the motion mode through the input module or the mobile phone APP, a controller inputs a corresponding torque control signal into a servo motor driver according to the motion mode selected by the trainer, the servo motor driver controls the servo motor to output corresponding set output torque according to the received torque control signal, the trainer pulls a pull rope to start training, and in the training process of the trainer, the trainer applies external torque load to the servo motor through a pulley block and a steel wire rope, the servo motor driver compares the external load torque with the current set output torque of the servo motor, and changes the motion state of the servo motor according to the comparison result, the encoder in the servo motor feeds back the position signal to the servo motor driver in real time, the servo motor driver calculates the position signal to obtain the real-time rotating speed of the servo motor and sends the real-time rotating speed to the controller, the controller compares the received real-time rotating speed of the servo motor with the reference rotating speed range of the servo motor under the current motion mode stored in the controller, and outputs a rotating speed control signal to the servo motor driver according to the comparison result, the servo motor driver adjusts the rotating speed of the servo motor according to the rotating speed control signal, so that the rotating speed of the servo motor is in the reference rotating speed range of the servo motor under the current motion mode, therefore, the utility model can realize the personalized, diversified and digitized training scheme, and the power source component has no impact noise and no movement inertia, thereby greatly reducing the strain risk in the training process.

Drawings

FIG. 1 is a perspective view of the training device for rope-driven exercise of the present invention;

FIG. 2 is a view of the internal structure of the training device for rope-driven exercise of the present invention;

FIG. 3 is a partial exploded view of the left arm and the left adjustment mechanism of the training device for rope-driven exercise of the present invention;

FIG. 4 is a perspective view of the left adjustment mechanism of the training device for rope-driven exercise of the present invention;

FIG. 5 is a partial perspective view of the left adjustment mechanism of the training device for rope-driven exercise of the present invention;

fig. 6 is a schematic structural diagram of the connecting block, the first locking pin and the third pulley of the left adjusting mechanism of the training device for rope-driven exercise of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Example (b): as shown in the figure, the rope-driven exercise training equipment comprises a main body component 1, a base 2, a left side arm 3, a right side arm 4, a pulley block, a pull rope 5 and a power source component, wherein the main body component 1 is installed on the base 2, the left side arm 3 and the right side arm 4 are symmetrically installed on the left side wall and the right side wall of the main body component 1, the pulley block is installed inside the main body component 1, the pull rope 5 is led out from the end part of the right side arm 4, penetrates through the right side arm 4, enters the main body component 1, surrounds the pulley block, reaches the left side arm 3 and is finally fixed on the end part of the left side arm 3, the pulley block comprises a fixed pulley block and a movable pulley block, the movable pulley block is connected with the power source component through a steel wire rope 6, the fixed pulley block is positioned above the movable pulley block, the fixed pulley block comprises a first fixed pulley 7, a second fixed pulley 8 and a third fixed pulley 9 which are transversely arranged at intervals, the movable pulley block comprises a first movable pulley 10 and a second movable pulley 11, the pull rope 5 sequentially rounds a first fixed pulley 7, the first movable pulley 10, a second fixed pulley 8, a second movable pulley 11 and a third fixed pulley 9, one end of the pull rope 5 extends out of the outer side of the first fixed pulley 7, the other end of the pull rope 5 extends out of the outer side of the third fixed pulley 9, and the first movable pulley 10 and the second movable pulley 11 are coaxially connected through a connecting piece. The power source component comprises a servo motor driver, a servo motor 12 and a winding drum 13, the servo motor driver is connected with the servo motor 12, a spiral groove is arranged on the winding drum 13, the steel wire rope 6 is wound at the spiral groove, one end of the steel wire rope 6 is fixedly arranged, the other end of the steel wire rope 6 is a power output end of the power source component and is connected with a movable pulley block, the rope-driven exercise training equipment further comprises an input module and a controller, the input module comprises an input panel 14 and a mobile phone APP used for being installed in a smart phone, the input panel 14 is installed on the main body component 1 through an adjustable damping support 15, the input panel 14 is connected with the controller, the mobile phone APP is connected with the controller through Bluetooth, the controller is connected with the servo motor driver, seven exercise modes are stored in the controller, a torque control signal of the servo motor 12 in each exercise mode and a reference rotating speed range of the servo motor 12 in each exercise mode, the seven motion modes are respectively a constant-force isotonic motion mode, a centrifugal isotonic motion mode, a centripetal isotonic motion mode, a inertial-free motion mode, a fluid resistance motion mode and an elastic force motion mode, a trainer can select the motion modes through an input module or a mobile phone APP, when a rope motion training device is started, the servo motor 12 is reset, the servo motor 12 is at a mechanical zero position at the moment, the rotating speed of the servo motor is zero, the trainer selects the motion modes through the input module or the mobile phone APP, a controller inputs corresponding torque control signals into a servo motor driver according to the motion modes selected by the trainer, the servo motor driver controls the servo motor 12 to output corresponding set output torque according to the received torque control signals, the trainer pulls the pull rope 5 to start training, and in the training process of the trainer, the trainer applies external torque load to the servo motor 12 through the pulley block and the steel wire rope 6, the servo motor driver compares the external load torque with the current set output torque of the servo motor 12, and changes the motion state of the servo motor 12 according to the comparison result, an encoder in the servo motor 12 feeds back a position signal to the servo motor driver in real time, the servo motor driver calculates the position signal to obtain the real-time rotating speed of the servo motor 12 and sends the real-time rotating speed to the controller, the controller compares the received real-time rotating speed of the servo motor 12 with the reference rotating speed range of the servo motor 12 stored in the controller under the current motion mode, and outputs a rotating speed control signal to the servo motor driver according to the comparison result, and the servo motor driver adjusts the rotating speed of the servo motor 12 according to the rotating speed control signal, so that the rotating speed of the servo motor 12 is in the reference rotating speed range of the servo motor 12 under the current motion.

In this embodiment, the controller and the servo motor driver are implemented by using the technology disclosed in chinese patent application with publication number CN108905048A, and the mobile phone APP is implemented by using a mature technology in the technical field thereof.

In the embodiment, the left arm 3 and the right arm 4 are mounted on the main body assembly 1 through an arm adjusting structure, the arm adjusting structure comprises a left adjusting mechanism for adjusting the left arm 3 and a right adjusting mechanism for adjusting the right arm 4, and the left adjusting mechanism and the right adjusting mechanism are in a bilateral symmetry structure; the left adjusting mechanism comprises an upper adjusting seat, a lower adjusting seat, a first side plate 16, a second side plate 17, an indexing plate 18, a connecting block 19, a first locking pin 20, a second locking pin 21, a first pulley 22, a second pulley 23 and a third pulley 24, the upper adjusting seat and the lower adjusting seat are arranged on the left side wall of the main body component 1 of the training equipment for the rope-driven exercise at intervals up and down, the first side plate 16 is positioned between the upper adjusting seat and the lower adjusting seat, the first side plate 16 is respectively connected on the upper adjusting seat and the lower adjusting seat in an axle joint manner, the second side plate 17 is positioned at the rear side of the first side plate 16 and fixed on the first side plate 16, the connecting block 19 extends between the first side plate 16 and the second side plate 17, the connecting block 19 is arranged on the first side plate 16 and the second side plate 17 through a first rotating shaft 25, the indexing plate 18 is positioned between the connecting block 19 and the second side plate 17, the indexing plate 18 is arranged on the second side plate 17, and N first slotted holes 26 distributed along an arc are arranged on the indexing plate 18, the second side plate 17 is provided with N second slotted holes 27 distributed along an arc, the N first slotted holes 26 correspond to the N second slotted holes 27 one by one, a corresponding first slotted hole 26 and a corresponding second slotted hole 27 are coaxial, N is an integer larger than or equal to 2, the bottom of the first side plate 16 is provided with M third slotted holes distributed along the arc, M is an integer larger than or equal to 2, the first side plate 16 is provided with an arc-shaped slot 28, the connecting block 19 is provided with a first mounting hole penetrating through the front and back, the first locking pin 20 enters the first mounting hole from the arc-shaped slot 28, the first mounting hole is provided with a first spring for inserting the first locking pin 20 into the first slotted hole 26 and the second slotted hole 27 opposite to the first locking pin 20 after pushing out the first locking pin 20, the lower adjusting seat is provided with a second mounting hole penetrating through the upper and lower adjusting seat, the second locking pin 21 is mounted at the second mounting hole, a second spring used for pushing out the second locking pin 21 and enabling the second locking pin 21 to be inserted into and fixed in a third groove hole just opposite to the second locking pin 21 is arranged at the second mounting hole, a first pulley 22 is arranged above the upper adjusting seat, a second pulley 23 is arranged between the first side plate 16 and the second side plate 17, the second pulley 23 is arranged on the first side plate 16 and the second side plate 17 through a second rotating shaft 29, a mounting groove 30 is arranged on the connecting block 19, a third pulley 24 is arranged in the mounting groove 30 and coaxially arranged on a first rotating shaft 25, the pull rope 5 is led out from the end part of the right arm 4, penetrates through the right arm 4, sequentially passes through the connecting block 19, the third pulley 24, the second pulley 23 and the first pulley 22 in the right adjusting mechanism, then enters the main body assembly 1, and passes through the pulley block to reach the left adjusting mechanism, and sequentially passes through the first pulley 22 in the left adjusting mechanism, The second pulley 23, the third pulley 24 and the connecting block 19 enter the left arm 3 and are finally fixed at the end of the left arm 3.

In this embodiment, the upper adjusting seat includes an upper adjusting plate 31 and a first hollow flange shaft 32, the upper adjusting plate 31 is fixed on the main body assembly 1 of the training equipment for rope-driven exercise, the first hollow flange shaft 32 is installed on the upper adjusting plate 31, the lower adjusting seat includes a lower adjusting plate 33 and a second hollow flange shaft 34, the lower adjusting plate 33 is fixed on the main body assembly 1 of the training equipment for rope-driven exercise, the second hollow flange shaft 34 is installed on the lower adjusting plate 33, the first side plate 16 is installed on the first hollow flange shaft 32 and the second hollow flange shaft 34, and the pull rope 5 passes through the first pulley 22 and then passes through the first hollow flange shaft 32 and then enters the second pulley 23.

In this embodiment, the main assembly 1 includes a welding frame 35, a sheet metal shell 36, a rear cover 37, and a top cover 38.

Claims

1. The utility model provides a rope-driven exercise training equipment, includes main part subassembly, base, left side arm, right side arm, assembly pulley, stay cord and power source subassembly, the main part subassembly install the base on, left side arm with right side arm bilateral symmetry install the left and right sides wall of main part subassembly on, the assembly pulley install the main part subassembly inside, the stay cord follow the tip of right side arm draw forth, pass right side arm after get into the main part subassembly in, and encircle the assembly pulley after arrive the left side arm fix last the tip of left side arm, the assembly pulley include crown block and running block, the running block with the power source subassembly pass through wire rope and connect, its characterized in that the power source subassembly include servo motor driver, a plurality of, Servo motor and bobbin, servo motor driver with servo motor connect, wire rope twine on the bobbin, wire rope's one end fixed set up, wire rope's the other end be power supply unit's power take off end, with the running block group connect, rope motion training equipment still include input module and controller, input module include input panel and be used for installing the cell-phone APP in the smart mobile phone, input panel install in the main part subassembly on, input panel with the controller be connected, cell-phone APP through the bluetooth with the controller be connected, the controller with servo motor driver connect, the controller in store in advance seven kinds of motion mode, servo motor's torque control signal and the reference speed range of servo motor under each kind of motion mode, the seven motion modes are respectively a constant-force isotonic motion mode, a centrifugal isotonic motion mode, a centripetal isokinetic motion mode, a non-inertial motion mode, a fluid resistance motion mode and an elastic force motion mode, a trainer can select the motion mode through the input module or the mobile phone APP, when the rope-driven motion training equipment is started, the servo motor is reset, the servo motor is at a mechanical zero position at the moment, the rotating speed of the servo motor is zero, the trainer can select the motion mode through the input module or the mobile phone APP, the controller inputs a corresponding torque control signal into the servo motor driver according to the motion mode selected by the trainer, the servo motor driver controls the servo motor to output corresponding set output torque according to the received torque control signal, the trainer pulls the pull rope to start training, in the training process of the trainer, the trainer applies external torque load to the servo motor through the pulley block and the steel wire rope, the servo motor driver compares the external load torque with the current set output torque of the servo motor and changes the motion state of the servo motor according to the comparison result, an encoder in the servo motor feeds back a position signal to the servo motor driver in real time, the servo motor driver calculates the position signal to obtain the real-time rotating speed of the servo motor and sends the real-time rotating speed to the controller, the controller compares the received real-time rotating speed of the servo motor with the reference rotating speed range of the servo motor stored in the controller under the current motion mode and outputs a rotating speed control signal to the servo motor driver according to the comparison result, and the servo motor driver adjusts the rotating speed of the servo motor according to the rotating speed control signal, so that the rotating speed of the servo motor is in the reference rotating speed range of the servo motor in the current motion mode.

2. The rope-driven exercise training apparatus as claimed in claim 1, wherein said left arm and said right arm are mounted to said body assembly by an arm adjustment structure, said arm adjustment structure comprising a left adjustment mechanism for adjusting said left arm and a right adjustment mechanism for adjusting said right arm, said left adjustment mechanism and said right adjustment mechanism being of a left-right symmetrical configuration; the left adjusting mechanism comprises an upper adjusting seat, a lower adjusting seat, a first side plate, a second side plate, an indexing plate, a connecting block, a first locking pin, a second locking pin, a first pulley, a second pulley and a third pulley, the upper adjusting seat and the lower adjusting seat are arranged on the left side wall of the main body component of the training device for the rope-driven exercise at an upper-lower interval, the first side plate is positioned between the upper adjusting seat and the lower adjusting seat, the first side plate is respectively connected with the upper adjusting seat and the lower adjusting seat in a shaft mode, the second side plate is positioned at the rear side of the first side plate and fixed on the first side plate, the connecting block extends between the first side plate and the second side plate, the connecting block is arranged on the first side plate and the second side plate through a first rotating shaft, and the indexing plate is positioned between the connecting block and the second side plate, the dividing plate is arranged on the second side plate, N first slotted holes distributed along an arc are arranged on the dividing plate, N second slotted holes distributed along the arc are arranged on the second side plate, the N first slotted holes correspond to the N second slotted holes one to one, the corresponding first slotted hole and one second slotted hole are coaxial, N is an integer larger than or equal to 2, M third slotted holes distributed along the arc are arranged at the bottom of the first side plate, M is an integer larger than or equal to 2, an arc-shaped groove is arranged on the first side plate, a first mounting hole penetrating through the connecting block from front to back is arranged on the connecting block, the first locking pin enters the first mounting hole from the arc-shaped groove, a first spring used for pushing out the first locking pin and then inserting the first locking pin into the first slotted hole and the second slotted hole opposite to the first locking pin is fixed is arranged at the first mounting hole, lower adjustment seat on be provided with the second mounting hole that runs through from top to bottom, second stop pin install second mounting hole department, second mounting hole department be provided with be used for with second stop pin release back make second stop pin insert rather than just to the third slotted hole in fixed second spring, first pulley install last adjustment seat top, the second pulley be located first curb plate with the second curb plate between, the second pulley install through the second pivot first curb plate with the second curb plate on, the connecting block on be provided with the mounting groove, the third pulley be located the mounting groove in and coaxial arrangement first pivot on, the stay cord follow the tip of right side arm draw forth the back and pass right side arm after in proper order via connecting block in the right side adjustment mechanism, The third pulley, the second pulley and the first pulley enter the main body assembly, encircle the pulley block and then penetrate out of the main body assembly to reach the left adjusting mechanism, and then enter the left side arm through the first pulley, the second pulley, the third pulley and the connecting block in the left adjusting mechanism in sequence and finally are fixed at the end part of the left side arm.

3. A training apparatus as claimed in claim 2 wherein the upper adjustment block comprises an upper adjustment plate and a first hollow flange shaft, the upper adjustment plate is fixed to the main assembly of the training apparatus, the first hollow flange shaft is mounted to the upper adjustment plate, the lower adjustment block comprises a lower adjustment plate and a second hollow flange shaft, the lower adjustment plate is fixed to the main assembly of the training apparatus, the second hollow flange shaft is mounted to the lower adjustment plate, the first side plate is mounted to the first hollow flange shaft and the second hollow flange shaft, and the pull cord passes through the first pulley and then passes out of the first hollow flange shaft and into the second pulley.