CN112156423A

CN112156423A - Multifunctional strength frame

Info

Publication number: CN112156423A
Application number: CN202010913810.1A
Authority: CN
Inventors: 姜琳冬; 徐翔宙
Original assignee: Ningbo Eliga Sports Technology Co ltd
Current assignee: Ningbo Eliga Sports Technology Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-01-01

Abstract

The invention discloses a multifunctional force frame, which comprises two guide rails, a framework, a first barbell rod, a pull-up rod, two gun barrel assemblies, a parallel bar, a resistance source and two barbell disc groups, wherein the resistance source comprises an input module, a controller and two power units, each power unit respectively comprises a pull rope, a first movable pulley, a guide rail pulley block and a resistance generation output mechanism, the resistance generation output mechanism comprises a shell, a servo motor driver, a servo motor, a resistance output pulley block, a motor frame, a winding disc and a steel wire rope, four motion modes and related parameters are stored in the controller, the input module comprises an input panel and a mobile phone APP, a trainer establishes a training plan, selects the motion modes and sets the parameters in the input module to train through the resistance source, and the servo motor driver adjusts the rotating speed of the servo motor in real time during training; the advantage is that output resistance can keep invariable, has multiple motion pattern, can realize individualized, diversified and digital training scheme.

Description

Multifunctional strength frame

Technical Field

The invention relates to a sports fitness apparatus, in particular to a multifunctional strength frame.

Background

Today, the variety of sports fitness equipment is wide, and the strength frame is more and more popular among people due to the unique advantages of the strength frame. The traditional strength frame generally adopts a metal barbell disc as a source of training resistance, the metal barbell disc has a simple structure and is convenient to process, but the motion inertia of the metal barbell disc can cause injury to a trainer under certain conditions. Moreover, the traditional force frame can only adjust the load by adjusting the types and the number of the metal barbell plates, but is limited by the specifications of the barbell plates, the adjustable resistance range can only be multiples of 5kg, and the load adjusting mode is single.

Modern physical and endurance training often requires more subtle resistance adjustments to achieve more precise and targeted training. The traditional strength frame can only use gravity to manufacture training resistance, cannot change a resistance output mode according to the requirements of a trainer, cannot perform digital training planning and data recording, and cannot meet the use requirements more and more. In the novel force frame, the pneumatic pressure resistance source overcomes the defects of the traditional metal barbell disc, the adjustment is more convenient, but the output resistance of the novel force frame is difficult to keep constant due to the inherent characteristics of the air medium because the pneumatic pressure resistance source takes air as the medium, the training mode is still single, and the training scheme of individuation, diversification and digitization is difficult to realize.

Disclosure of Invention

The invention aims to provide a multifunctional strength frame which can keep constant output resistance, has various alternative motion modes and can realize personalized, diversified and digital training schemes.

The technical scheme adopted by the invention for solving the technical problems is as follows: a multifunctional force frame comprises two guide rails, a framework, a first barbell rod, a pull-up rod, two gun barrel assemblies, a parallel bar, a resistance source and two barbell group members, wherein the two guide rails are arranged at intervals left and right, the two guide rails are positioned below the framework, the framework is arranged on the two guide rails, the pull-up rod is arranged at the top of the front end of the framework, each barbell group member is respectively composed of a series of barbell plates, the two barbell group members are respectively hung at the left side and the right side of the rear part of the framework, the first barbell rod is made of carbon steel and has the weight of 15-20 kg, the two gun barrel assemblies are symmetrically arranged at the lower part of the front end of the framework left and right, and when the first barbell rod on which the barbell plates are hung is inserted into the two gun barrel assemblies, the single-arm shoulder pushing training can be carried out, the parallel bars are arranged on the left side or the right side of the framework, the resistance source comprises an input module, a controller and two power units, the two power units are correspondingly arranged on the two guide rails one by one, each power unit respectively comprises a pull rope, a first movable pulley, a guide pulley block and a resistance generation output mechanism, the resistance generation output mechanism comprises a shell, a servo motor driver, a servo motor, a resistance output pulley block, a motor frame, a winding disc and a steel wire rope, the servo motor driver, the servo motor, the resistance output pulley block, the motor frame, the winding disc and the steel wire rope are all positioned in the shell, the motor frame is fixed on the shell, the servo motor is arranged on the motor frame, and the winding disc is connected with the servo motor, the servo motor is connected with the servo motor driver, the servo motor driver is connected with the controller, the steel wire rope is wound on the winding disc, one end of the steel wire rope is fixed, the other end of the steel wire rope extends out, the resistance output pulley block comprises a movable pulley block, a first fixed pulley, a second fixed pulley, a third fixed pulley, a fourth fixed pulley, a fifth fixed pulley, a sixth fixed pulley and a seventh fixed pulley which are respectively arranged on the shell, the movable pulley block comprises a movable pulley frame, a second movable pulley and a third movable pulley, the second movable pulley and the third movable pulley are coaxially arranged on the movable pulley frame in a left-right parallel mode, the movable pulley frame is arranged on the shell and connected with the other end of the steel wire rope, and the second movable pulley is positioned on the right side of the third movable pulley, the first fixed pulley is positioned on the front side of the second fixed pulley, the mounting positions of the first fixed pulley and the second fixed pulley are lower than that of the second movable pulley, the mounting positions of the third fixed pulley, the fourth fixed pulley, the fifth fixed pulley, the sixth fixed pulley and the seventh fixed pulley are higher than that of the second movable pulley, the third fixed pulley and the fourth fixed pulley are arranged at intervals front and back, the third fixed pulley is positioned on the front side of the fourth fixed pulley, the fifth fixed pulley is positioned on the front side of the third fixed pulley and is higher than that of the third fixed pulley, the sixth fixed pulley and the seventh fixed pulley are arranged at intervals up and down and are positioned on the front side of the fifth fixed pulley, the guide rail comprises an eighth fixed pulley, a ninth fixed pulley, a fifth fixed pulley and a seventh fixed pulley, A tenth fixed pulley, an eleventh fixed pulley, a first roller, a second roller, a third roller, a wheel frame and a fixing knob, wherein the wheel frame is located in the guide rail, the first roller and the second roller are installed on the left side of the wheel frame at intervals in the front-back direction, the third roller is installed on the right side of the wheel frame, the eighth fixed pulley and the ninth fixed pulley are installed at the front end of the guide rail, the eighth fixed pulley is located above the ninth fixed pulley, the tenth fixed pulley and the eleventh fixed pulley are installed on the wheel frame, the tenth fixed pulley is located in front of the eleventh fixed pulley, the guide rail is provided with a plurality of insertion holes matched with the fixing knob, and when the fixing knob is screwed into the insertion holes, the wheel frame is fixed on the guide rail, when the fixed knob is screwed out of the jack, the wheel frame can move back and forth along the track through the first roller, the second roller and the third roller when being stressed, the pull rope is connected end to end, the pull rope sequentially passes through the first movable pulley, the tenth fixed pulley, the eighth fixed pulley, the ninth fixed pulley, the second fixed pulley, the fourth fixed pulley, the third fixed pulley, the second movable pulley, the fifth fixed pulley, the third movable pulley, the sixth fixed pulley, the seventh fixed pulley, the first fixed pulley and the eleventh fixed pulley, four motion modes, servo motor torque control signals of the motion modes and servo motor reference rotating speed ranges of the motion modes are stored in the controller, the four motion modes are respectively a constant force isotonic mode, a centripetal isotonic mode, a centrifugal isotonic mode and an elastic force mode, the input module comprises an input panel and a mobile phone APP installed on a smart phone, the input panel is connected with the controller, the mobile phone APP communicates with the controller through Bluetooth, a trainer can establish a corresponding training plan, select different motion modes and set various training parameters in the input module, when the multifunctional strength frame is opened, 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, if the trainer needs to train by adopting the first barbell bar and a resistance source, the position of the wheel frame is firstly adjusted according to the position of the first barbell bar, and the first movable pulleys in the two power units are respectively hung at the left end and the right end of the first barbell bar, the trainer selects a motion mode through the input panel 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 a corresponding set output torque according to the received torque control signal, the trainer lifts the first barbell bar to start training, in the training process of the trainer, the trainer pulls the first barbell bar to pull the first movable pulleys at two ends of the first barbell bar to synchronously move and applies a pulling force to the pulling rope, the pulling force of the pulling rope is transmitted to the winding disc through the resistance output pulley block to apply an external torque load to the servo motor, and the servo motor driver compares the external load torque with the set output torque of the servo motor, and changing the motion state of the servo motor according to the comparison result, feeding a position signal back to the servo motor driver in real time by an encoder in the servo motor, calculating the position signal by the servo motor driver to obtain the real-time rotating speed of the servo motor and sending the real-time rotating speed to the controller, comparing 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, sending a rotating speed control signal to the servo motor driver according to the comparison result, and adjusting the rotating speed of the servo motor by the servo motor driver so as to enable the rotating speed of the servo motor to be in the reference rotating speed range of the servo motor under the current motion mode, thereby realizing the constant resistance output.

The multifunctional force frame further comprises a second barbell bar, the second barbell bar is made of aluminum alloy, the weight of the second barbell bar is 2-3 kg, and two ends of the second barbell bar are used for being hung on the first movable pulleys in the two power units and then are matched with the power source for training. In this structure, the cooperation of second barbell pole and first barbell pole can realize the training of great strength through first barbell pole, realizes less strength training through first barbell pole, and the training mode is more nimble.

Skeleton both sides be provided with one respectively and extend to the support of skeleton front side, every the support inside have a rope to pass, work as two the one end of rope can the one-to-one with two power pack in first movable pulley connect, work as two the one end one-to-one of rope with two power pack in first movable pulley connect the time, the training person can carry out the arm through the cooperation of two ropes with the resistance source and take exercise, also can tie up two ropes at the waist, accomplish supplementary chin movement.

The framework comprises a plurality of upright posts which are enclosed into a cuboid shape, the upright posts are respectively arranged on two guide rails, the tops of every two adjacent upright posts are connected through a beam, the left side and the right side of the framework are respectively provided with a transverse guard, when a trainer trains at the position above the transverse guard by adopting the first barbell bar or the second barbell bar, if the first barbell bar or the second barbell bar abnormally drops, the framework can be supported by the two transverse guards, the left side and the right side of the front end of the framework are provided with two safety racks at intervals, when the trainer trains at the position above the safety racks by adopting the first barbell bar or the second barbell bar, if the first barbell bar or the second barbell bar abnormally drops, will be supported by two said transverse guards.

The framework is also provided with two pairs of sandwich hooks for hanging the first barbell bar and the second barbell bar.

Compared with the prior art, the invention has the advantages that the multifunctional force frame is constructed by two guide rails, a framework, a first barbell rod, a pull-up rod, two barrel assemblies, a parallel bar, a resistance source and two barbell groups, the two guide rails are arranged at intervals from left to right, the two guide rails are positioned below the framework, the framework is arranged on the two guide rails, the pull-up rod is arranged at the top of the front end of the framework, each barbell group is respectively composed of a series of barbell plates, the two barbell groups are respectively hung at the left side and the right side of the rear part of the framework, the first barbell rod is made of carbon steel and has the weight of 15-20 kg, the two barrel assemblies are symmetrically arranged at the lower part of the front end of the framework from left to right, when the first barbell rod on which the barbell plates are hung is inserted into the two barrel assemblies, the single-arm shoulder-pushing training can be carried out, the parallel bar is arranged at the left side or the right side, two power units are installed on two guide rails in a one-to-one correspondence mode, each power unit comprises a pull rope, a first movable pulley, a guide rail pulley block and a resistance generation output mechanism, each resistance generation output mechanism comprises a shell, a servo motor driver, a servo motor, a resistance output pulley block, a motor frame, a winding disc and a steel wire rope, the servo motor drivers, the servo motors, the resistance output pulley blocks, the motor frames, the winding discs and the steel wire ropes are all located in the shells, the motor frames are fixed on the shells, the servo motors are installed on the motor frames, the winding discs are connected with the servo motors, the servo motors are connected with the servo motor drivers, the servo motor drivers are connected with a controller, the steel wire ropes are wound on the winding discs, one ends of the steel wire ropes are fixed, the other ends of the steel wire ropes extend out, each resistance output pulley, A third fixed pulley, a fourth fixed pulley, a fifth fixed pulley, a sixth fixed pulley and a seventh fixed pulley, wherein the movable pulley group comprises a movable pulley frame, a second movable pulley and a third movable pulley, the second movable pulley and the third movable pulley are coaxially arranged on the movable pulley frame in a left-right parallel manner, the movable pulley frame is arranged on the shell and connected with the other end of the steel wire rope, the second movable pulley is positioned at the right side of the third movable pulley, the first fixed pulley is positioned at the front side of the second fixed pulley, the mounting positions of the first fixed pulley and the second fixed pulley are lower than that of the second movable pulley, the mounting positions of the third fixed pulley, the fourth fixed pulley, the fifth fixed pulley, the sixth fixed pulley and the seventh fixed pulley are higher than that of the second movable pulley, the third fixed pulley and the fourth fixed pulley are arranged at intervals in the front-back direction, the third fixed pulley is positioned at the front side of the fourth fixed pulley, the fifth fixed pulley is positioned at the front side of the third fixed pulley and the mounting position is higher than that of, the sixth fixed pulley and the seventh fixed pulley are arranged at an interval from top to bottom and are positioned on the front side of the fifth fixed pulley, the guide rail pulley block comprises an eighth fixed pulley, a ninth fixed pulley, a tenth fixed pulley, an eleventh fixed pulley, a first roller, a second roller, a third roller, a wheel carrier and a fixed knob, the wheel carrier is positioned in the guide rail, the first roller and the second roller are arranged on the left side of the wheel carrier at a front-back interval, the third roller is arranged on the right side of the wheel carrier, the eighth fixed pulley and the ninth fixed pulley are arranged at the front end of the guide rail, the eighth fixed pulley is positioned above the ninth fixed pulley, the tenth fixed pulley and the eleventh fixed pulley are arranged on the wheel carrier, the tenth fixed pulley is positioned in front of the eleventh fixed pulley, the guide rail is provided with a plurality of insertion holes matched with the fixed knob, when the fixed knob is screwed into the insertion holes, the wheel carrier is fixed on the guide rail, when the fixed knob is screwed out of the insertion holes, the, The second roller and the third roller move back and forth along the track, the pull ropes are connected end to end, the pull ropes sequentially pass through the first movable pulley, the tenth fixed pulley, the eighth fixed pulley, the ninth fixed pulley, the second fixed pulley, the fourth fixed pulley, the third fixed pulley, the second movable pulley, the fifth fixed pulley, the third movable pulley, the sixth fixed pulley, the seventh fixed pulley, the first fixed pulley and the eleventh fixed pulley, four motion modes, servo motor torque control signals of the motion modes and servo motor reference rotating speed ranges of the motion modes are stored in the controller, the four motion modes are respectively a constant force equal tension mode, a centripetal equal tension mode, a centrifugal equal tension mode and an elastic force mode, the input module comprises an input panel and a mobile phone APP installed on the smart phone, the input panel is connected with the controller, the mobile phone APP communicates with the controller through Bluetooth, and a trainer can establish a corresponding training plan, a corresponding training plan corresponding to the training plan, a corresponding, Selecting different motion modes and setting various training parameters, when the multifunctional strength frame is opened, 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, if a trainer needs to train by adopting a first barbell bar and a resistance source, firstly, the position of a wheel frame is adjusted according to the position of the first barbell bar, first movable pulleys in two power units are respectively hung at the left end and the right end of the first barbell bar, the trainer selects a motion mode through an input panel or a mobile phone APP, a controller inputs corresponding torque control signals 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 signals, the trainer lifts the first barbell bar to start training, and in the training process of the trainer, the trainer pulls the first movable pulleys at the two ends of the first barbell bar to synchronously move by pulling the first barbell bar, applying a pulling force on a pulling rope, transmitting the pulling force of the pulling rope to a winding disc through a resistance output pulley block so as to apply an external torque load on a servo motor, comparing the external load torque with the output torque set by the servo motor by a servo motor driver, changing the motion state of the servo motor according to the comparison result, feeding a position signal back to the servo motor driver by an encoder in the servo motor in real time, calculating the position signal by the servo motor driver to obtain the real-time rotating speed of the servo motor and sending the real-time rotating speed to a controller, comparing 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 by the controller, sending a rotating speed control signal to the servo motor driver according to the comparison result, and adjusting the rotating speed of the servo motor by the servo motor driver so that the rotating speed of the servo motor is in, the invention realizes the output with constant resistance, thereby the output resistance can be kept constant, the invention has various alternative motion modes, and can realize the personalized, diversified and digitized training scheme.

Drawings

FIG. 1 is a perspective view of the multi-functional strength stand of the present invention;

FIG. 2 is a partial block diagram of the power unit of the multi-functional power frame of the present invention;

FIG. 3 is a schematic view of the loop structure of the pull rope of the multifunctional power frame of the present invention;

fig. 4 is a partial structural view of the guide pulley block of the pulling rope of the multifunctional force frame of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

Example (b): as shown in the figure, the multifunctional force frame comprises two guide rails 1, a framework, a first barbell bar 2, a pull-up bar 3, two barrel assemblies 4, a parallel bar 5, a resistance source and two barbell disc groups 6, wherein the two guide rails 1 are arranged at intervals left and right, the two guide rails 1 are positioned below the framework, the framework is installed on the two guide rails 1, the pull-up bar 3 is installed at the top of the front end of the framework, each barbell disc group 6 is respectively composed of a series of barbell discs, the two barbell disc groups 6 are respectively hung at the left side and the right side of the rear portion of the framework, the first barbell bar 2 is made of carbon steel and has the weight of 15-20 kg, the two barrel assemblies 4 are symmetrically installed at the lower portion of the front end of the framework left and right, when the first barbell bar 2 on which the barbell discs are hung is inserted into the two barrel assemblies 4, single-arm shoulder-pushing training can be carried out, the double bar 5 is arranged at the, The device comprises a controller and two power units, wherein the two power units are correspondingly arranged on two guide rails 1 one by one, each power unit respectively comprises a pull rope 7, a first movable pulley 8, a guide rail pulley block and a resistance generation output mechanism 9, each resistance generation output mechanism 9 comprises a shell 10, a servo motor driver, a servo motor 11, a resistance output pulley block, a motor frame 12, a winding disc 13 and a steel wire rope 14, the servo motor driver, the servo motor 11, the resistance output pulley block, the motor frame 12, the winding disc 13 and the steel wire rope 14 are all positioned in the shell 10, the motor frame 12 is fixed on the shell 10, the servo motor 11 is arranged on the motor frame 12, the winding disc 13 is connected with the servo motor 11, the servo motor 11 is connected with the servo motor driver, the servo motor driver is connected with the controller, the steel wire rope 14 is wound on the winding disc 13, one end of the steel wire rope, the resistance output pulley block comprises a movable pulley block, a first fixed pulley 15, a second fixed pulley 16, a third fixed pulley 17, a fourth fixed pulley 18, a fifth fixed pulley 19, a sixth fixed pulley 20 and a seventh fixed pulley 21 which are respectively arranged on the shell 10, the movable pulley block comprises a movable pulley frame, a second movable pulley 22 and a third movable pulley 23, the second movable pulley 22 and the third movable pulley 23 are coaxially arranged on the movable pulley frame in a left-right parallel mode, the movable pulley frame is arranged on the shell 10 and connected with the other end of the steel wire rope 14, the second movable pulley 22 is positioned on the right side of the third movable pulley 23, the first fixed pulley 15 is positioned on the front side of the second fixed pulley 16, the installation positions of the first fixed pulley 15 and the second fixed pulley 16 are lower than that of the second movable pulley 22, the installation positions of the third fixed pulley 17, the fourth fixed pulley 18, the fifth fixed pulley 19, the sixth fixed pulley 20 and the seventh fixed pulley 21 are higher than that of the second movable pulley 22, the third fixed pulley 17 and the fourth fixed pulley 18 are arranged at intervals front and back, the third fixed pulley 17 is arranged at the front side of the fourth fixed pulley 18, the fifth fixed pulley 19 is arranged at the front side of the third fixed pulley 17 and is higher than the third fixed pulley 17 in installation position, the sixth fixed pulley 20 and the seventh fixed pulley 21 are arranged at intervals up and down and are both arranged at the front side of the fifth fixed pulley 19, the guide pulley block comprises an eighth fixed pulley 24, a ninth fixed pulley 25, a tenth fixed pulley 26, an eleventh fixed pulley 27, a first roller 28, a second roller 29, a third roller, a wheel frame 30 and a fixed knob 31, the wheel frame 30 is arranged in the guide rail 1, the first roller 28 and the second roller 29 are arranged at intervals front and back on the left side of the wheel frame 30, the third roller is arranged at the right side of the wheel frame 30, the eighth fixed pulley 24 and the ninth fixed pulley 25 are arranged at the front end of the guide rail 1, the eighth fixed pulley 24 is arranged above the ninth fixed pulley 25, the tenth fixed pulley 26 and the eleventh fixed pulley 27 are arranged on the wheel, the tenth fixed pulley 26 is positioned in front of the eleventh fixed pulley 27, the guide rail 1 is provided with a plurality of insertion holes 32 matched with the fixed knob 31, when the fixed knob 31 is screwed into the insertion hole 32, the wheel frame 30 is fixed on the guide rail 1, when the fixed knob 31 is screwed out of the insertion hole 32, the wheel frame 30 can move back and forth along the guide rail 1 through the first roller 28, the second roller 29 and the third roller when being stressed, the pull rope 7 is connected end to end, the pull rope 7 sequentially passes through the first movable pulley 8, the tenth fixed pulley 26, the eighth fixed pulley 24, the ninth fixed pulley 25, the second fixed pulley 16, the fourth fixed pulley 18, the third fixed pulley 17, the second movable pulley 22, the fifth fixed pulley 19, the third movable pulley 23, the sixth fixed pulley 20, the seventh fixed pulley 21, the first fixed pulley 15 and the eleventh fixed pulley 27, four movement patterns, a torque control signal of the servo motor 11 of each movement pattern and a reference rotation speed range of the servo motor 11 of each movement pattern are stored in the controller, the four motion modes are respectively a constant force isotonic mode, a centripetal isotonic mode, a centrifugal isotonic mode and an elastic force mode, the input module comprises an input panel 33 and a mobile phone APP installed on a smart phone, the input panel 33 is connected with a controller, the mobile phone APP communicates with the controller through Bluetooth, a trainer can establish a corresponding training plan in the input module, select different motion modes and set various training parameters, when the multifunctional strength frame is opened, the servo motor 11 resets, the servo motor 11 is at a mechanical zero position at the moment, the rotating speed is zero, if the trainer needs to train by adopting the first barbell bar 2 and a resistance source, firstly, the position of the wheel frame is adjusted according to the position of the first barbell bar 2, the first movable pulleys 8 in the two power units are respectively hung at the left end and the right end of the first barbell bar 2, and the trainer selects the motion mode through the input panel 33 or the mobile phone APP, the controller inputs a corresponding torque control signal into the servo motor driver according to a motion mode selected by a trainer, the servo motor driver controls the servo motor 11 to output a corresponding set output torque according to the received torque control signal, the trainer lifts the first barbell bar 2 to start training, in the training process of the trainer, the trainer pulls the first barbell bar 2 to pull the first movable pulleys 8 at the two ends of the first barbell bar 2 to synchronously move, a pulling force is applied to the pulling rope 7, the pulling force of the pulling rope 7 is transmitted to the winding disc 13 through the resistance output pulley block so as to apply an external torque load to the servo motor 11, the servo motor driver compares the external load torque with the set output torque of the servo motor 11, the motion state of the servo motor 11 is changed according to the comparison result, and an encoder in the servo motor 11 feeds back a position signal to the servo motor driver in real time, the servo motor driver calculates a position signal to obtain the real-time rotating speed of the servo motor 11 and sends the real-time rotating speed to the controller, the controller compares the received real-time rotating speed of the servo motor 11 with a reference rotating speed range of the servo motor 11 stored in the controller under the current motion mode, and sends a rotating speed control signal to the servo motor driver according to a comparison result, and the servo motor driver adjusts the rotating speed of the servo motor 11 so that the rotating speed of the servo motor 11 is in the reference rotating speed range of the servo motor 11 under the current motion mode, and resistance constant output is achieved.

In this embodiment, the multifunctional force frame further comprises a second barbell bar 34, the second barbell bar 34 is made of aluminum alloy, the weight of the second barbell bar 34 is 2-3 kg, and two ends of the second barbell bar 34 are used for being hung on the first movable pulleys 8 of the two power units and then are matched with a power source for training.

In this embodiment, the two sides of the framework are respectively provided with a support 35 extending to the front side of the framework, a rope penetrates through each support 35, when one ends of the two ropes are connected with the first movable pulleys 8 in the two power units in a one-to-one correspondence manner, and when one ends of the two ropes are connected with the first movable pulleys 8 in the two power units in a one-to-one correspondence manner, a trainer can perform arm exercise by matching the two ropes with a resistance source, and also can tie the two ropes at the waist to complete upward movement of the auxiliary pull body.

In this embodiment, the frame includes a plurality of columns 36, the columns 36 are enclosed into a rectangular parallelepiped, the columns 36 are respectively installed on the two guide rails 1, the tops of every two adjacent columns 36 are connected by a cross beam 37, a horizontal guard 38 is respectively installed on the left and right sides of the frame, when a trainer trains at a position above the horizontal guard 38 by using the first barbell bar 2 or the second barbell bar 34, if the first barbell bar 2 or the second barbell bar 34 abnormally drops, the two horizontal guards 38 can support the two columns, two safety racks 39 are arranged at left and right intervals at the front end of the frame, and when the trainer trains at a position above the safety racks 39 by using the first barbell bar 2 or the second barbell bar 34, if the first barbell bar 2 or the second barbell bar 34 abnormally drops, the two horizontal guards 38 support the two columns.

In this embodiment, two pairs of sandwich hangers 40 for hanging the first and

second barbell bars

2 and 34 are further provided on the framework.

Claims

1. A multifunctional force frame is characterized by comprising two guide rails, a framework, a first barbell bar, a pull-up bar, two gun barrel assemblies, a parallel bar, a resistance source and two barbell groups, wherein the two guide rails are arranged at intervals left and right, the two guide rails are positioned below the framework, the framework is arranged on the two guide rails, the pull-up bar is arranged at the top of the front end of the framework, each barbell group is respectively composed of a series of barbell plates, the two barbell groups are respectively hung at the left side and the right side of the rear part of the framework, the first barbell bar is made of carbon steel and has the weight of 15-20 kg, the two gun barrel assemblies are symmetrically arranged at the lower part of the front end of the framework left and right, and when the first barbell bar on which the barbell plates are hung is inserted into the two gun barrel assemblies, the single-arm shoulder pushing training can be carried out, the parallel bars are arranged on the left side or the right side of the framework, the resistance source comprises an input module, a controller and two power units, the two power units are correspondingly arranged on the two guide rails one by one, each power unit respectively comprises a pull rope, a first movable pulley, a guide pulley block and a resistance generation output mechanism, the resistance generation output mechanism comprises a shell, a servo motor driver, a servo motor, a resistance output pulley block, a motor frame, a winding disc and a steel wire rope, the servo motor driver, the servo motor, the resistance output pulley block, the motor frame, the winding disc and the steel wire rope are all positioned in the shell, the motor frame is fixed on the shell, the servo motor is arranged on the motor frame, and the winding disc is connected with the servo motor, the servo motor is connected with the servo motor driver, the servo motor driver is connected with the controller, the steel wire rope is wound on the winding disc, one end of the steel wire rope is fixed, the other end of the steel wire rope extends out, the resistance output pulley block comprises a movable pulley block, a first fixed pulley, a second fixed pulley, a third fixed pulley, a fourth fixed pulley, a fifth fixed pulley, a sixth fixed pulley and a seventh fixed pulley which are respectively arranged on the shell, the movable pulley block comprises a movable pulley frame, a second movable pulley and a third movable pulley, the second movable pulley and the third movable pulley are coaxially arranged on the movable pulley frame in a left-right parallel mode, the movable pulley frame is arranged on the shell and connected with the other end of the steel wire rope, and the second movable pulley is positioned on the right side of the third movable pulley, the first fixed pulley is positioned on the front side of the second fixed pulley, the mounting positions of the first fixed pulley and the second fixed pulley are lower than that of the second movable pulley, the mounting positions of the third fixed pulley, the fourth fixed pulley, the fifth fixed pulley, the sixth fixed pulley and the seventh fixed pulley are higher than that of the second movable pulley, the third fixed pulley and the fourth fixed pulley are arranged at intervals front and back, the third fixed pulley is positioned on the front side of the fourth fixed pulley, the fifth fixed pulley is positioned on the front side of the third fixed pulley and is higher than that of the third fixed pulley, the sixth fixed pulley and the seventh fixed pulley are arranged at intervals up and down and are positioned on the front side of the fifth fixed pulley, the guide rail comprises an eighth fixed pulley, a ninth fixed pulley, a fifth fixed pulley and a seventh fixed pulley, A tenth fixed pulley, an eleventh fixed pulley, a first roller, a second roller, a third roller, a wheel frame and a fixing knob, wherein the wheel frame is located in the guide rail, the first roller and the second roller are installed on the left side of the wheel frame at intervals in the front-back direction, the third roller is installed on the right side of the wheel frame, the eighth fixed pulley and the ninth fixed pulley are installed at the front end of the guide rail, the eighth fixed pulley is located above the ninth fixed pulley, the tenth fixed pulley and the eleventh fixed pulley are installed on the wheel frame, the tenth fixed pulley is located in front of the eleventh fixed pulley, the guide rail is provided with a plurality of insertion holes matched with the fixing knob, and when the fixing knob is screwed into the insertion holes, the wheel frame is fixed on the guide rail, when the fixed knob is screwed out of the jack, the wheel frame can move back and forth along the track through the first roller, the second roller and the third roller when being stressed, the pull rope is connected end to end, the pull rope sequentially passes through the first movable pulley, the tenth fixed pulley, the eighth fixed pulley, the ninth fixed pulley, the second fixed pulley, the fourth fixed pulley, the third fixed pulley, the second movable pulley, the fifth fixed pulley, the third movable pulley, the sixth fixed pulley, the seventh fixed pulley, the first fixed pulley and the eleventh fixed pulley, four motion modes, servo motor torque control signals of the motion modes and servo motor reference rotating speed ranges of the motion modes are stored in the controller, the four motion modes are respectively a constant force isotonic mode, a centripetal isotonic mode, a centrifugal isotonic mode and an elastic force mode, the input module comprises an input panel and a mobile phone APP installed on a smart phone, the input panel is connected with the controller, the mobile phone APP communicates with the controller through Bluetooth, a trainer can establish a corresponding training plan, select different motion modes and set various training parameters in the input module, when the multifunctional strength frame is opened, 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, if the trainer needs to train by adopting the first barbell bar and a resistance source, the position of the wheel frame is firstly adjusted according to the position of the first barbell bar, and the first movable pulleys in the two power units are respectively hung at the left end and the right end of the first barbell bar, the trainer selects a motion mode through the input panel 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 a corresponding set output torque according to the received torque control signal, the trainer lifts the first barbell bar to start training, in the training process of the trainer, the trainer pulls the first barbell bar to pull the first movable pulleys at two ends of the first barbell bar to synchronously move and applies a pulling force to the pulling rope, the pulling force of the pulling rope is transmitted to the winding disc through the resistance output pulley block to apply an external torque load to the servo motor, and the servo motor driver compares the external load torque with the set output torque of the servo motor, and changing the motion state of the servo motor according to the comparison result, feeding a position signal back to the servo motor driver in real time by an encoder in the servo motor, calculating the position signal by the servo motor driver to obtain the real-time rotating speed of the servo motor and sending the real-time rotating speed to the controller, comparing 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, sending a rotating speed control signal to the servo motor driver according to the comparison result, and adjusting the rotating speed of the servo motor by the servo motor driver so as to enable the rotating speed of the servo motor to be in the reference rotating speed range of the servo motor under the current motion mode, thereby realizing the constant resistance output.

2. The multifunctional force frame of claim 1, further comprising a second barbell bar made of aluminum alloy and having a weight of 2-3 kg, wherein two ends of the second barbell bar are used for hanging the first movable pulleys of the two power units and then cooperating with the power source for training.

3. The multifunctional strength frame as claimed in claim 2, wherein two sides of the frame are respectively provided with a support extending to the front side of the frame, each support is internally penetrated by a rope, when one end of each of the two ropes is connected with the first movable pulley of the two power units in a one-to-one correspondence manner, and when one end of each of the two ropes is connected with the first movable pulley of the two power units in a one-to-one correspondence manner, a trainer can exercise arms by matching the two ropes with a resistance source and can also tie the two ropes to the waist to complete an auxiliary pull-up action.

4. The multifunctional force frame of claim 2, wherein said frame comprises a plurality of columns, said plurality of columns are rectangular, said plurality of columns are respectively mounted on two said guide rails, the top of each two adjacent columns is connected by a cross beam, said frame is respectively mounted with a horizontal guard on the left and right sides, when the trainer uses said first barbell bar or said second barbell bar to train on the position above said horizontal guard, if said first barbell bar or said second barbell bar is not dropped normally, said frame can be supported by said two horizontal guards, two safety frames are spaced from each other on the left and right sides of the front end of said frame, when the trainer uses said first barbell bar or said second barbell bar to train on the position above said safety frames, if the first or second barbell bar is dropped abnormally, it will be supported by the two lateral guards.

5. The multifunctional force frame of claim 2, wherein said skeleton further comprises two pairs of sandwich hooks for hanging said first barbell bar and said second barbell bar.