Isokinetic muscle strength training equipment and isokinetic muscle strength training limit detection method

Abstract

The invention discloses constant-velocity muscle strength training equipment and a constant-velocity muscle strength training limiting detection method.The constant-velocity muscle strength training equipment comprises an equipment host and a rotation limiting device, the rotation limiting device comprises limiting pins and a limiting housing, and the limiting housing is provided with a plurality of limiting holes allowing the limiting pins to be inserted therein; the rotary limiting device further comprises a plurality of in-place sensors corresponding to the limiting holes in number, the in-place sensors are in signal connection with the equipment host, the in-place sensors are used for generating in-place signals when the limiting pins are inserted into the limiting holes and transmitting the in-place signals to the equipment host, and the equipment host obtains the limiting angles of the limiting pins based on the in-place signals. According to the constant-speed muscle strength training equipment, the in-place sensor is arranged at each limiting hole to detect whether the limiting pin is inserted into the corresponding limiting hole or not, and in-place signals are transmitted to the equipment host, so that the equipment host can obtain information about whether the limiting pin is inserted or not, and hurt caused when training is started when the limiting pin is not inserted is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation robots, and in particular to isokinetic muscle training equipment and an isokinetic muscle training limit detection method. Background Art

[0002] Isokinetic strength training is an active exercise mode that adjusts the external resistance according to the changes in muscle strength during exercise, so that the entire joint moves at a preset speed and can convert any movement force exceeding this speed into antagonistic resistance. It is mainly used for training the ankle, knee, hip, shoulder and elbow joints.

[0003] The range of motion angles of multiple joints is not constant. In order to prevent the trainee from being injured during training, the usual isokinetic strength training equipment is equipped with a rotation limit device. Such training devices are divided into two categories, one is mechanical and the other is electronic. For the mechanical rotation limit device, it has a limit cover and two limit pins. The limit cover has multiple through holes. The isokinetic strength training equipment will determine the limit holes where the limit pins should be inserted according to the range of motion suitable for the trainee, so that the trainee can only move within the range limited by the two limit pins. However, during use, if the trainee does not strictly follow the prescribed procedures, sometimes he will forget to place or adjust the rotation limit device, then in the process of using the isokinetic strength training equipment, it is very likely to cause harm to the trainee or other personnel, or even damage the equipment. The electronic rotation limit device directly uses the program control of the device host to adjust the range of motion of the power output device for the applied resistance. This limiting method may have the risk of program errors or loss of control without the trainee's knowledge, thereby causing harm to the trainee or other personnel. Therefore, purely mechanical or electronic rotation limit devices are not completely reliable. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defect of unreliable rotation limit device of isokinetic muscle training equipment in the prior art, and to provide an isokinetic muscle training equipment and an isokinetic muscle training limit detection method.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] An isokinetic muscle training device comprises a device main unit and a rotation limit device, wherein the rotation limit device comprises a limit pin and a limit cover, wherein the limit cover has a plurality of limit holes for inserting the limit pin, and the rotation limit device further comprises a plurality of in-position sensors corresponding to the number of the limit holes, wherein the plurality of in-position sensors are respectively connected to the device main unit signals, wherein the in-position sensors are used to generate an in-position signal when the limit pin is inserted into the limit hole, and transmit the in-position signal to the device main unit, and the device main unit obtains the limit angle of the limit pin based on the in-position signal.

[0007] In this technical solution, an in-place sensor is provided at each limit hole to detect whether the corresponding limit hole is inserted by a limit pin, and an in-place signal is transmitted to the device host so that the device host can obtain information on whether the limit pin is inserted, thereby avoiding injuries caused by starting training when the limit pin is not inserted. And because the component that actually implements the angle limiting function in this solution is still the limit pin, only the in-place sensor is used to detect whether the limit pin is in place, thus avoiding the safety risks caused by program errors or loss of control in the current electronic rotation limit solution in the prior art.

[0008] At the same time, since each limit hole has the ability to detect whether the limit pin is inserted, the device host can also obtain the specific angle of the inserted limit hole based on the in-place signal of each in-place sensor, thereby realizing the function of starting training only after the limit pin is inserted at the correct angle, further improving the reliability of the rotation limit device.

[0009] Preferably, the device host includes a device host body and a microcontroller, the microcontroller is arranged close to the limit cover, and the plurality of in-place sensors are connected to the device host body signal through the microcontroller. The in-place sensors transmit the in-place signals to the microcontroller, and the microcontroller obtains the limit angle of the limit pin based on the in-place signals and transmits the limit angle to the device host body.

[0010] In the present technical solution, compared with directly connecting the in-place sensor with the device host for signal connection, a microcontroller is set to first collect the detection signal of the in-place sensor and then transmit the limit angle of the limit pin to the device host body. The microcontroller can be set at a position close to the in-place sensor, thereby greatly shortening the signal transmission distance between the in-place sensor and the microcontroller, shortening the length of the signal line, and making the structure of the rotation limit device more compact.

[0011] Preferably, the rotation limiting device further comprises a circuit board, and the microcontroller and the in-position sensor are both arranged on the circuit board.

[0012] In this technical solution, by setting up a circuit board, the in-position sensor and the microcontroller are integrated on the circuit board. There is no need to set up cables between the in-position sensor and the microcontroller for signal connection. Without the constraints of cables, the structure of the rotation limit device is further made more compact and the signal transmission is more reliable.

[0013] Preferably, the circuit board and the limiting cover are coaxially arranged, the circuit board can move synchronously with the limiting cover, the circuit board has a plurality of first through holes corresponding one by one to the limiting holes, and the in-position sensor and the microcontroller are arranged on the first surface of the circuit board opposite to the limiting cover.

[0014] In the technical solution, by setting a first through hole corresponding to the limit block on the circuit board, the in-place sensor and the microcontroller are set on the first surface of the circuit board opposite to the limit cover, so that the circuit board can be fitted with the limit cover, and the connection between the limit cover and the circuit board is more reliable. Specifically, after the limit pin is inserted into the limit hole, it will reach the depth of abutting the limit block of the rotation limit device through the first through hole. In this process, the in-place sensor set on the circuit board can sense the insertion of the limit pin.

[0015] Preferably, the limiting cover shell has a connecting hole, the second surface of the circuit board opposite to the limiting cover shell has a connecting block, the connecting hole and the connecting block are arranged correspondingly, the connecting block is embedded in the connecting hole, and the second surface abuts against the limiting cover shell.

[0016] In this technical solution, by bringing the second surface of the circuit board into contact with the limiting cover, and providing a connecting hole and a connecting block embedded in the connecting hole, the circuit board and the limiting cover are better fitted, making the structure of the rotation limiting device more compact.

[0017] Preferably, the number of the connection holes and the number of the connection blocks are both plural.

[0018] Preferably, the number of the limiting holes is a, and a≥18.

[0019] In the present technical solution, by setting the number of the limiting holes to be no less than 18, the adjustment accuracy of the rotation limiting device is higher.

[0020] Preferably, the number of the limiting holes is a, and a≤36.

[0021] In the present technical solution, the number of the limiting holes is set to no more than 36 because the adjustment accuracy corresponding to the 36 limiting holes is sufficient to avoid over-processing.

[0022] Preferably, the number of the limiting holes is an integer divisible by 360.

[0023] In this technical solution, by setting the number of limiting holes to an integer divisor of 360, the calculation of the limiting angle is more accurate.

[0024] Preferably, the plurality of limiting holes are evenly distributed along the circumference of the limiting cover.

[0025] In the technical solution, the limiting holes are arranged to be evenly distributed along the circumference of the limiting cover, so that the adjustment of the rotation limiting device is more uniform and reasonable.

[0026] Preferably, the in-position sensor is a micro switch;

[0027] Alternatively, the in-position sensor is a photoelectric in-position sensor.

[0028] In the present technical solution, a specific form of an in-place sensor is provided, wherein the in-place sensor may be an integrated sensor such as a micro switch, or a split sensor such as a photoelectric sensor.

[0029] Preferably, the rotation limiting device further comprises a plurality of signal lights, the plurality of signal lights are arranged in one-to-one correspondence with the limiting holes, and the signal lights are connected to the device host signal.

[0030] In the technical solution, by setting a signal light, the signal light can be used to indicate the insertion status of the limit pin. This indication method is simple and convenient and easy for trainees to understand.

[0031] A method for detecting a limit position of isokinetic muscle training, comprising the following steps:

[0032] S1: The device host obtains the range of motion for isokinetic training;

[0033] S2: The device host calculates the insertion position of the limit pin according to the motion range, and controls the limit hole at the corresponding position to light up the signal light;

[0034] S3: The device host detects whether the limit pin is inserted into the limit hole at the corresponding position based on the in-position sensor. If yes, the signal light is turned off.

[0035] In the present technical solution, after obtaining the motion range of isokinetic training, the insertion position of the limit pin is calculated and a signal light is turned on, which can simply and effectively indicate to the trainee which limit hole the limit pin should be inserted into, that is, the limit hole with the light on is the limit hole where the trainee needs to insert the limit pin, while the limit hole without the light on does not require the limit pin to be inserted (including the situation where the limit pin does not need to be inserted according to calculation and the situation where the limit pin has already been inserted).

[0036] The positive and progressive effect of the present invention is that an in-place sensor is set at each limit hole to detect whether the corresponding limit hole is inserted by the limit pin, and the in-place signal is transmitted to the device host. Since the in-place sensor of each limit hole is independent, when the in-place sensor transmits the in-place signal to the device host, the device host can obtain the limit angle of the limit hole based on the in-place signal, so that the device host can clearly know whether the limit pin is inserted and whether the insertion position is correct. If the limit pin is inserted correctly, training can be started. If the limit pin is not inserted or inserted incorrectly, training cannot be started, thereby effectively avoiding the training process from being damaged by the limit pin not being inserted or being inserted incorrectly, and improving the reliability of the rotation limit device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is an exploded schematic diagram of the rotation limiting device of Example 1 of the present invention (I).

[0038] Figure 2 This is an exploded schematic diagram of the rotation limiting device of Example 1 of the present invention (II).

[0039] Description of reference numerals:

[0040] Rotation limit device 100

[0041] Limit cover 1

[0042] Limit hole 101

[0043] Connection hole 102

[0044] Limit pin 2

[0045] In position sensor 3

[0046] Microcontroller 4

[0047] Circuit board 5

[0048] First through hole 501

[0049] Connection block 51

[0050] Rotation axis 6

[0051] Limit block 7 DETAILED DESCRIPTION

[0052] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0053] Example 1

[0054] like Figure 1 and Figure 2As shown, this embodiment provides an isokinetic muscle training device, which includes a device host (not shown in the figure) and a rotation limit device 100, the rotation limit device 100 includes a limit pin 2 and a limit cover 1, the limit cover 1 has a plurality of limit holes 101 for the limit pin 2 to be inserted, and the rotation limit device 100 also includes a plurality of in-place sensors 3 corresponding to the number of the limit holes 101, and the plurality of in-place sensors 3 are respectively connected to the device host signal, and the in-place sensor 3 is used to generate an in-place signal when the limit pin 2 is inserted into the limit hole 101, and transmit the in-place signal to the device host, and the device host obtains the limit angle of the limit pin 2 based on the in-place signal. Specifically, the in-place sensor 3 of each limit hole 101 is independent, and each in-place sensor 3 has a corresponding number and angle record. When the in-place sensor 3 transmits the in-place signal to the device host, the device host can obtain the number and corresponding angle of the limit hole 101 inserted by the limit pin 2 based on the in-place signal, thereby achieving the purpose of obtaining the limit angle of the limit pin 2 based on the in-place signal. Therefore, by setting a position sensor 3 at each limit hole 101 to detect whether the corresponding limit hole 101 is inserted by the limit pin 2, and transmitting the position signal to the device host, the device host can obtain the information whether the limit pin 2 is inserted, thereby avoiding the damage caused by starting training when the limit pin 2 is not inserted. And because the component that actually realizes the angle limiting function in this scheme is still the limit pin 2, only relying on the position sensor to detect whether the limit pin is in place, it can avoid the safety risks caused by program errors or loss of control in the current electronic rotation limit scheme in the prior art. At the same time, since each limit hole 101 has the ability to detect whether the limit pin 2 is inserted, the device host can also obtain the specific angle of the inserted limit hole 101 based on the position signal of each position sensor 3, so that the function of starting training can be realized when the limit pin 2 is inserted at the correct angle, further improving the reliability of the rotation limit device.

[0055] Among them, the rotation limit device 100 also includes a rotating shaft 6 and a limit block 7 rotating with the shaft. The limit pin 2 passes through the limit hole 101 on the limiting cover 1 and abuts against the limit block 7 to achieve limitation of the movement range of the device. This is the prior art, and the device host calculates the limit hole 101 into which the limit pin 2 should be inserted according to the movement range. This is also the prior art and will not be repeated here.

[0056] Specifically in this embodiment, all electrical signals are not transmitted wirelessly. The device host includes a device host body and a microcontroller 4, the microcontroller 4 is arranged close to the limit cover 1, and multiple in-place sensors 3 are connected to the device host body through the microcontroller 4. The in-place sensor 3 transmits the in-place signal to the microcontroller 4, and the microcontroller 4 obtains the limit angle of the limit pin 2 based on the in-place signal, and transmits the limit angle to the device host body. That is to say, in this embodiment, the in-place sensor 3 first transmits the in-place signal to the microcontroller 4 close to the limit cover 1, and the microcontroller 4 obtains the limit angle of the limit pin 2 and then transmits it to the device host. Compared with directly connecting the in-place sensor 3 to the device host, by setting the microcontroller 4 to first collect the detection signal of the in-place sensor 3 and then transmit the limit angle of the limit pin 2 to the device host body, the microcontroller 4 can be set at a position close to the in-place sensor 3, thereby greatly shortening the distance of signal transmission between the in-place sensor 3 and the microcontroller 4, making the structure of the rotation limit device 100 more compact.

[0057] Of course, in other embodiments, the in-position sensor 3 may also be directly connected to the device host signal, and the signal transmission method may refer to the prior art, which may be wired transmission or wireless transmission, and will not be described in detail here.

[0058] Furthermore, in this embodiment, the rotation limit device 100 further includes a circuit board 5, and the microcontroller 4 and the in-position sensor 3 are both arranged on the circuit board 5. That is to say, in this embodiment, the in-position sensor 3 and the microcontroller 4 are not transmitted through a signal line, but the in-position sensor 3 and the microcontroller 4 are integrated on the circuit board 5, and there is no signal cable between the in-position sensor 3 and the microcontroller 4, which further improves the compactness of the rotation limit device 100 and makes the signal transmission more reliable. Among them, the circuit board 5 realizes signal connection with the device host through a signal line.

[0059] Of course, in other embodiments, the in-position sensor 3 may also be arranged on the limit cover 1 , and in this case, the in-position sensor 3 is connected to the microcontroller 4 via a signal line.

[0060] In this embodiment, the circuit board 5 and the limit housing 1 are coaxially arranged, and the circuit board 5 can move synchronously with the limit housing 1. The circuit board 5 has a plurality of first through holes 501 that correspond one-to-one with the limit holes 101. The in-place sensor 3 and the microcontroller 4 are arranged on the first surface of the circuit board 5 opposite to the limit housing 1. Specifically, after the limit pin 2 is inserted into the limit hole 101, it will pass through the first through hole 501 and reach the depth where it abuts against the limit block 7 of the rotation limit device 100. During this process, the in-place sensor 3 arranged on the circuit board 5 can sense the insertion of the limit pin 2. By providing the first through holes 501 on the circuit board 5 that correspond one-to-one with the limit blocks 7 and arranging the in-place sensor 3 and the microcontroller 4 on the first surface of the circuit board 5 opposite to the limit housing 1, the circuit board 5 can be arranged in a fitting manner with the limit housing 1, and the connection between the limit housing 1 and the circuit board 5 is more reliable.

[0061] Of course, in other embodiments, the in-place sensor 3 can also be arranged on the second surface of the circuit board 5 opposite to the limit housing 1. In this case, it should be noted that a gap needs to be left between the circuit board 5 and the limit housing 1 to prevent the in-place sensor 3 from being damaged by being clamped, which will not be elaborated here.

[0062] Furthermore, in this embodiment, the circuit board 5 is arranged in a fitting manner with the limit housing 1, and the limit housing 1 has a connection hole 102. The second surface of the circuit board 5 opposite to the limit housing 1 has a connection block 51. The connection hole 102 and the connection block 51 are correspondingly arranged, and the connection block 51 is embedded in the connection hole 102, and the second surface abuts against the limit housing 1. By providing the connection hole 102 and the connection block 51 embedded in the connection hole 102, the second surface of the circuit board 5 abuts against the limit housing 1, the circuit board 5 and the limit housing 1 are better fitted, and the two are not easily separated, making the structure of the rotation limit device 100 more compact and reliable.

[0063] Specifically, there are three connection holes 102 and three connection blocks 51 respectively. The three connection holes 102 are distributed in a "pin" shape on the limit housing 1. Of course, in other embodiments, the connection holes 102 may not be provided or other numbers of connection holes 102 may be provided. To a certain extent, the more the number of the connection holes 102 and the connection blocks 51, the less likely the circuit board 5 and the limit housing 1 are to be separated, which is prior art and will not be elaborated here.

[0064] In this embodiment, the number a of the limit holes 101 is 24, and the 24 limit holes 101 are evenly distributed along the circumferential direction of the limit housing 1.

[0065] Of course, in other embodiments, the value range of a can be a≥18, or a≤36, and a is preferably an integer divisible by 360. By setting the number of limit holes 101 to be no less than 18, the adjustment accuracy of the rotation limit device 100 is higher. The number of limit holes 101 is set to no more than 36 because the adjustment accuracy corresponding to 36 limit holes 101 is sufficient to avoid excessive processing. By setting the number of limit holes 101 to an integer divisible by 360, the calculation of the limit angle is more accurate. The specific value of the number a of the limit holes 101 is in the prior art, and can be specifically confirmed based on the accuracy requirements for the design of the isokinetic muscle training equipment, which will not be repeated here.

[0066] In this embodiment, the in-position sensor 3 is an integrated micro switch.

[0067] Of course, the specific form of the in-place sensor is the prior art. In other embodiments, the in-place sensor 3 may also be an integrated sensor of other forms in the prior art, or a split sensor such as a photoelectric sensor, which will not be described in detail here.

[0068] Specifically, the working principle of the micro switch is: when there is no limit pin 2 inserted in the limit hole 101, the micro switch is in the normally open state 0. If a limit hole M is inserted with a limit pin 2, the corresponding micro switch is converted to the normally closed state 1. The microcontroller 4 receives the signal input of the M hole and records the number of the M hole. The limit angle at the M hole is calculated to be 360°*M / 24, that is, M*15°. The host of the device determines whether the limit angle is consistent with the angle calculated according to the range of motion. When the insertion angles of the two limit pins 2 are correct, the isokinetic muscle training device will be turned on for the user to use.

[0069] In this embodiment, the rotation limit device 100 also includes a plurality of signal lights, which are arranged one by one with the limit holes 101, and the signal lights are connected to the microcontroller 4 by signal. By setting the signal lights, the signal lights can be used to indicate the insertion of the limit pin 2. This indication method is simple and convenient, and easy for users to understand. Specifically, when the device host calculates that a limit hole 101 needs to be inserted with a limit pin 2, the device host will transmit the signal to the microcontroller 4, and the microcontroller 4 will transmit the signal to the corresponding signal light, and the corresponding signal light will light up to indicate the user to insert the limit pin 2. When the limit pin 2 is inserted, the signal light will go out.

[0070] Of course, in other embodiments, other ways of instructing the user may be used, such as setting a display screen to instruct the user on the display screen to insert the limit pin 2 into the desired limit hole 101. Or in more embodiments, a number may be engraved next to each limit hole 101, and the user may be informed by voice that the limit pin 2 should be inserted into the desired limit hole 101. The above-mentioned ways of instructing the user are prior arts and will not be repeated here.

[0071] Example 2

[0072] This embodiment provides a method for detecting the limit position of isokinetic muscle training, which includes the following steps:

[0073] S1: The device host obtains the range of motion for isokinetic training;

[0074] S2: The device host calculates the insertion position of the limit pin according to the motion range, and controls the limit hole at the corresponding position to light up the signal light;

[0075] S3: The device host detects whether the limit pin is inserted into the limit hole at the corresponding position based on the in-position sensor. If yes, the signal light is turned off.

[0076] Specifically, in this embodiment, after obtaining the motion range of isokinetic training, the insertion position of the limit pin is calculated and a signal light is turned on, which can simply and effectively indicate to the user which limit hole the limit pin should be inserted into. That is, the limit hole with the light on is the limit hole that requires the user to insert the limit pin, and the limit hole without the light on does not require the limit pin to be inserted (including the situation where the limit pin does not need to be inserted according to calculation and the situation where the limit pin has already been inserted).

[0077] The isokinetic muscle training limit detection method in this embodiment can be used for the isokinetic muscle training equipment in Example 1.

[0078] For example, when the isokinetic strength training limit detection method of this embodiment is applied to the isokinetic strength training equipment in Example 1, since the isokinetic strength training equipment has 24 limit holes, the limit holes are numbered from 1 to 24. Among them, the limit hole on the limit cover that is 90° upward can be specified as hole No. 1, and its angle is 0°, and the number of the limit holes gradually increases in a clockwise direction. The host of the device calculates the number of the limit hole where the limit pin should be inserted according to the range of motion required for training. For example, the host of the device calculates that the range of motion required for training should be between 45° and 135°, then the limit pin should be inserted into limit hole No. 3 and limit hole No. 9, and the signal lights at limit hole No. 3 and limit hole No. 9 light up.

[0079] When the user inserts the limit pin into limit hole No. 3, the in-position sensor at limit hole No. 3 detects the insertion of the limit pin, and the limit hole into which the limit pin is inserted is numbered as No. 3, and the signal light at limit hole No. 3 goes out. The same is true for the signal light at limit hole No. 9. If the user inserts the limit pin into a signal hole other than signal holes No. 3 and No. 9, the corresponding sensor will also transmit an in-position signal to the device host, but at this time the device host recognizes that the limit hole inserted by the user is not signal hole No. 3 or signal hole No. 9, that is, signal holes No. 3 and No. 9 do not recognize the insertion of the limit pin, and the corresponding signal light will continue to light up, and the user needs to pull out the wrong limit pin and reinsert it into the correct limit hole.

[0080] Of course, the isokinetic muscle training limit detection method in this embodiment can also be applied to other isokinetic muscle training equipment, and its indication method can also be adjusted according to the indication structure of the isokinetic muscle training equipment, which will not be repeated here.

[0081] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An isokinetic muscle training device, comprising a device main body and a rotation limit device, wherein the rotation limit device comprises a limit pin and a limit cover, and the limit cover has a plurality of limit holes for the limit pin to be inserted, characterized in that: The rotation limit device also includes a plurality of in-place sensors corresponding to the number of the limit holes, and the plurality of in-place sensors are respectively connected to the device host signals. The in-place sensors are used to generate an in-place signal when the limit pin is inserted into the limit hole, and transmit the in-place signal to the device host. The device host obtains the limit angle of the limit pin based on the in-place signal.

2. The isokinetic muscle training device according to claim 1, characterized in that: The device host includes a device host body and a microcontroller. The microcontroller is arranged close to the limit cover. The multiple in-place sensors are connected to the device host body signal through the microcontroller. The in-place sensors transmit the in-place signals to the microcontroller. The microcontroller obtains the limit angle of the limit pin based on the in-place signal and transmits the limit angle to the device host body.

3. The isokinetic muscle training device according to claim 2, characterized in that: The rotation limiting device further comprises a circuit board, and the microcontroller and the in-position sensor are both arranged on the circuit board.

4. The isokinetic muscle training device according to claim 3, characterized in that: The circuit board and the limiting cover are coaxially arranged, the circuit board can move synchronously with the limiting cover, the circuit board has a plurality of first through holes corresponding one by one to the limiting holes, and the in-position sensor and the microcontroller are arranged on the first surface of the circuit board opposite to the limiting cover.

5. The isokinetic muscle training device according to claim 3, characterized in that: The limiting cover is provided with a connecting hole, the second surface of the circuit board opposite to the limiting cover is provided with a connecting block, the connecting hole and the connecting block are arranged correspondingly, the connecting block is embedded in the connecting hole, and the second surface is in contact with the limiting cover.

6. The isokinetic muscle training device according to claim 5, characterized in that: The number of the connection holes and the number of the connection blocks are both multiple.

7. The isokinetic muscle training device according to claim 1, characterized in that: The number of the limiting holes is a, a≥18; And / or, the number of the limiting holes is an integer divisible by 360; And / or, the plurality of limiting holes are evenly distributed along the circumference of the limiting cover shell.

8. The isokinetic muscle training device according to claim 1, characterized in that: The in-position sensor is a micro switch; Alternatively, the in-position sensor is a photoelectric in-position sensor.

9. The isokinetic muscle training device according to claim 1, characterized in that: The rotation limiting device also includes a plurality of signal lights, which are arranged in one-to-one correspondence with the limiting holes, and the signal lights are connected to the device host signal.

10. A method for detecting the limit position of isokinetic muscle training, characterized in that: The isokinetic muscle training limit detection method comprises the following steps: S1: The device host obtains the range of motion for isokinetic training; S2: The device host calculates the insertion position of the limit pin according to the motion range, and controls the limit hole at the corresponding position to light up the signal light; S3: The device host detects whether the limit pin is inserted into the limit hole at the corresponding position based on the in-position sensor. If yes, the signal light is turned off.

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